Note: Descriptions are shown in the official language in which they were submitted.
CA 02976524 2017-08-14
Description
MOVABLE DETECTION DEVICE FOR MIDDLE CHUTES AND APPLICATION THEREOF
Technical Field
The present invention relates to a mobile central chute detection apparatus
and an application of the
mobile central chute detection apparatus, which belongs to the technical field
of coal mining
equipment.
Background
Chutes are main body of a scraper conveyer and an operating track of a coal
cutter. Coal and
scraper chain slide in the chutes, and the chutes coordinate with hydraulic
supports to accomplish
chute pushing and support moving process. Chutes are one of important
components of the
downhole coal mining equipment. Owing to the harsh downhole working
environment, the central
chutes are subjected to shocks and vibrations at different degrees; in
addition, since the chute sills
may be out of level, the chutes may have offsets in horizontal and vertical
directions; consequently,
a groove profile between two chutes may be not in the same direction, thereby
the scraper chain
may suffer increased operating resistance when it slides in the chutes. The
chutes and scrapers may
be worn severely and cause shocks to the driving system as time passes,
resulting in shortened
service life of the scraper conveyer; moreover, it is difficult to ensure that
all chutes are in the same
line after accomplishing chute pushing and support moving process, and the
above problem may
be encountered if the level of curvature is too high. More seriously, if a
dumbbell pin that connects
two chutes falls out or is broken when the scraper conveyer operates, the
downhole coal mining
equipment cannot operate normally or even may be damaged, resulting in
immeasurable
consequences. Therefore, it is necessary to detect the positions of the
central chutes.
At present, most central chute position detection apparatuses employ fixed
sensors. However, since
there are hundreds of central chutes on a scraper conveyer, a large number of
sensors are required if
conventional fixed sensors are used; in addition, since the circuit layout is
limited owing to the
harsh downhole environment, the sensors may be damaged frequently if there is
no effective
protective measure; moreover, the chute structure will be changed if the
circuits are embedded in
the chutes of the scraper conveyer.
Therefore, it is necessary to design a mobile central chute detection
apparatus.
Contents of the Invention
To overcome the drawbacks in the prior art, the present invention provides a
mobile central chute
detection apparatus.
The present invention further provides a method for applying the mobile
central chute detection
apparatus.
The technical scheme of the present invention is as follows:
A mobile central chute detection apparatus, comprising a main body, a
travelling device, a vertical
offset detection mechanism, a horizontal offset detection mechanism, an
information processing
device and a driving device; the information processing device and the driving
device are arranged
on one side of the main body, one end of the main body is connected with the
travelling device, and
the vertical offset detection mechanism and the horizontal offset detection
mechanism are arranged
at the other end of the main body; the driving device is drive-jointed with
the travelling device, and
the vertical offset detection mechanism and the horizontal offset detection
mechanism are
electrically connected with the information processing device. The central
chute detection apparatus
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Description
in the present invention provides power through the driving device, so that
the travelling device
moves on the central chutes. During the movement process, the vertical offset
detection mechanism
and the horizontal offset detection mechanism transmit detected signals to the
information
processing device, and then the information processing device transmits the
signals to an upper
computer, the upper computer uses an internal program to judge the offset
condition of the central
chutes and then transmits an adjustment signal to a hydraulic support
according to the offset
condition of the central chutes, so that the hydraulic support adjusts the
positions of the central
chutes.
Preferably, the driving device is an electric motor.
Preferably, the information processing device comprises a power supply module,
a signal
processing module, and a wireless communication module, which arc connected in
an conventional
way in the prior art.
Preferably, the main body comprises a protective housing and a base, the
information processing
device and the electric motor are arranged on one side of the protective
housing, the travelling
device is connected at one end of the protective housing, the other end of the
protective housing is
connected with the base, and the vertical offset detection mechanism and the
horizontal offset
detection mechanism are arranged on the base.
Preferably, the travelling device comprises a gear reducer and travelling
wheels, the electric motor
is drive-jointed with the gear reducer, and an output shaft of the gear
reducer is connected with the
travelling wheels.
Preferably, the output shaft of the electric motor is drive-jointed with an
input shaft of the gear
reducer via a coupling.
Preferably, the vertical offset detection mechanism comprises a detection
roller, a vertical offset
detection link rod, a link rod, a piston rod, an angular displacement sensor,
a spring and a retaining
block, wherein, one end of the vertical offset detection link rod is connected
with the detection
roller, the other end of the vertical offset detection link rod is hinged to
the retaining block via a
connecting shaft, one end of the connecting shaft is connected with the
angular displacement sensor,
the angular displacement sensor is electrically connected with the signal
processing module, the
vertical offset detection link rod is further hinged to one end of the link
rod, the other end of the link
rod is hinged to the piston rod, the spring is fitted over the piston rod, the
piston rod is slidably
connected with the retaining block, and the retaining block is fixedly
connected with the base.
Preferably, the horizontal offset detection mechanism comprises a detection
roller, a horizontal
offset detection link rod, a link rod, a piston rod, an angular displacement
sensor, a spring and a
retaining block, wherein, one end of the horizontal offset detection link rod
is connected with the
detection roller, the other end of the horizontal offset detection link rod is
hinged to the retaining
block via a connecting shaft, one end of the connecting shaft is connected
with the angular
displacement sensor, the angular displacement sensor is electrically connected
with the signal
processing module, the horizontal offset detection link rod is further hinged
to one end of the link
rod, the other end of the link rod is hinged to the piston rod, the spring is
fitted over the piston rod,
the piston rod is slidably connected with the retaining block, the retaining
block is fixedly
connected with the base, the horizontal offset detection link rod is further
connected with the
angular displacement sensor, and the angular displacement sensor is
electrically connected with the
information processing device.
Preferably, the central chute detection apparatus further comprises a dumbbell
pin detection device
which is arranged on the base and is electrically connected with the signal
processing module.
Preferably, the dumbbell pin detection device comprises a front retaining
block, a front
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Description
magneto-dependent sensor, a rear retaining block and a rear magneto-dependent
sensor, wherein,
the front magneto-dependent sensor and the rear magneto-dependent sensor are
arranged at one end
of the front retaining block and one end of the rear retaining block
respectively, and the other end of
the front retaining block and the other end of the rear retaining block arc
fixedly connected with the
base. An advantage of the design is: magneto-dependent sensors are arranged on
the front retaining
block and the rear retaining block respectively, and corresponding permanent
magnets are arranged
on the dumbbell pin; when the detection apparatus passes through the dumbbell
pin, the
magneto-dependent sensors will detect the permanent magnets and transmit
signals to the signal
processing module.
A method for applying the mobile central chute detection apparatus, comprising
the following steps:
Mounting the detection apparatus on central chutes so that the travelling
wheels are fitted with a
toothed rack on the chutes, the detection roller of the vertical offset
detection mechanism clings to a
top surface of the chutes, the detection roller of the horizontal offset
detection mechanism clings to
a side surface of the chutes, the electric motor drives the travelling wheels
to travel along the
toothed rack and drives the entire detection apparatus to move on the chute;
during the movement
process, when the vertical offset detection link rod or the horizontal offset
detection link rod has
any angular change, the angular displacement sensor transmits a signal of
detected angular change
to the information processing device, the information processing device
processes the angular
change signal and then transmits the signal to an external upper computer.
The present invention attains the following beneficial effects:
I. When a scraper conveyer operates, the central chute detection apparatus
provided in the present
invention can detect horizontal and vertical offsets of the central chutes and
feed the detection
result back to an upper computer in real time, so that the upper computer can
transmit a signal to
a hydraulic support to adjust the positions of the central chutes in real
time.
2. The central chute detection apparatus provided in the present invention can
move on the central
chutes; thus, the position offsets of the chutes can be detected with a single
detection apparatus,
and it is unnecessary to install multiple fixed detectors; on one hand, the
resources are saved; on
the other hand, installation procedures are reduced. The utilization
efficiency of the detection
apparatus is higher.
3. The central chute detection apparatus provided in the present invention
also can detect whether
the dumbbell pins that connect the chutes fall off or are broken. Compared
with existing
detection apparatus, the detection apparatus provided in the present invention
can
comprehensively detect position offset condition and safe operation condition
of the chutes, and
can attain a better detection result.
4. The central chute detection apparatus provided in the present invention can
be used as a detection
platform, on which other detection devices can be added, such as coal quantity
scanner, etc. The
detection apparatus has high extensibility.
5. The central chute detection apparatus provided in the present invention
sets a technical basis for
unmanned operation at a downhole working face, and avoids the problems of low
detection
efficiency and poor detection result of manual detection.
Description of Drawings
Fig. 1 is a stereogram I of the detection apparatus in the present
invention;
Fig. 2 is a stereogram II of the detection apparatus in the present invention;
Fig. 3 is a schematic structural diagram of the vertical offset detection
mechanism in the present
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Description
invention;
Fig. 4 is a schematic structural diagram of the horizontal offset detection
mechanism in the
present invention;
Fig. 5 is a schematic structural diagram of the dumbbell pin detection
mechanism in the present
invention;
Fig. 6 is a connecting relationship diagram of the base in the present
invention;
Fig. 7 is a principle relationship diagram of the horizontal offset detection
mechanism in the
present invention.
In the figures: 1 - travelling device; 2 - protective housing; 3 - vertical
offset detection mechanism;
4 - horizontal offset detection mechanism; 5 - dumbbell pin detection device;
6 - information
processing device; 7 - electric motor; 8 - base; 9 - top surface of chute; 10 -
detection roller; 11 -
vertical offset detection link rod; 12 - link rod; 13 - piston rod; 14 -
spring; 15 - retaining block; 16 -
retaining block; 17 - horizontal offset detection link rod; 18 - link rod; 19 -
piston rod; 20 - spring;
21 - detection roller; 22 - side surface of chute; 23 - front retaining block;
24 - front
magneto-dependent sensor; 25 - permanent magnet; 26 - rear retaining block; 27
- rear
magneto-dependent sensor; 28 - dumbbell pin; 29 - horizontal surface fitting
plate of chute; 30 -
vertical surface fitting plate of chute; 31 - side surface 1 of chute; 32 -
side surface 2 of chute.
Embodiments
Hereunder the present invention will be further detailed in examples with
reference to the
accompanying drawings, but the present invention is not limited to those
embodiments.
Example 1:
A mobile central chute detection apparatus, comprising a travelling device 1,
a protective housing 2,
a vertical offset detection mechanism 3, a horizontal offset detection
mechanism 4, an information
processing device 6, an electric motor 7 and a base 8, wherein, the
information processing device 6
and the electric motor 7 are arranged on one side of the protective housing 2,
one end of the
protective housing 2 is connected with the travelling device 1, the other end
of the protective
housing 2 is connected with the base 8, the vertical offset detection
mechanism 3 and the horizontal
offset detection mechanism 4 are arranged on the base 8, the electric motor 7
is connected with the
travelling device 1, and the vertical offset detection mechanism 3 and the
horizontal offset detection
mechanism 4 are electrically connected with the information processing device
6.
The travelling device 1 comprises a gear reducer and travelling wheels, the
electric motor 7 is
drive-jointed with the gear reducer, and an output shaft of the gear reducer
is connected with the
travelling wheels. The travelling wheels are gear wheels, and can travel along
a toothed rack on the
chutes and thereby drive the entire detection apparatus to move along the
chutes.
The information processing device 6 comprises a power supply module, a signal
processing module,
and a wireless communication module, which are connected in an conventional
way in the prior art.
Wherein, a ZLC-800 DC motor produced by Changzhou Yangs Motor Co., Ltd. is
selected as the
electric motor, two 120C storage batteries produced by Suclian Leike Power
Supply Co., Ltd. are
selected as the power supply module and are connected in series, a PLC200
signal processing
module produced by Siemens Ltd. is selected as the signal processing module
and the CPU is
Model 221, a DTD433M wireless communication module produced by Xi'an Dataie
Electronics Co.,
Ltd. is selected as the wireless communication module.
The vertical offset detection mechanism 3 comprises a detection roller 10, a
vertical offset detection
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Description
link rod 11, a link rod 12, a piston rod 13, an angular displacement sensor, a
spring 14 and a
retaining block 15, wherein, one end of the vertical offset detection link rod
11 is connected with
the detection roller 10, the other end of the vertical offset detection link
rod 11 is hinged to the
retaining block 15 via a connecting shaft, one end of the connecting shaft is
connected with the
angular displacement sensor, the angular displacement sensor is electrically
connected with the
signal processing module, the vertical offset detection link rod 11 is further
hinged to one end of the
link rod 12, the other end of the link rod 12 is hinged to the piston rod 13,
the spring 14 is fitted
over the piston rod 13, the piston rod 13 is slidably connected with the
retaining block 15 in a hole
of the retaining block 15, and the retaining block 15 is fixedly connected
with the base 8.
The horizontal offset detection mechanism 4 comprises a detection roller 21, a
horizontal offset
detection link rod 17, a link rod 18, a piston rod 19, an angular displacement
sensor, a spring 20 and
a retaining block 16, wherein, one end of the horizontal offset detection link
rod 17 is connected
with the detection roller 21, the other end of the horizontal offset detection
link rod 17 is hinged to
the retaining block 16 via a connecting shaft, one end of the connecting shaft
is connected with the
angular displacement sensor, the angular displacement sensor is electrically
connected with the
signal processing module, the horizontal offset detection link rod 17 is
further hinged to one end of
the link rod 18, the other end of the link rod 18 is hinged to the piston rod
19, the spring 20 is fitted
over the piston rod 19, the piston rod 19 is slidably connected with the
retaining block 16 in a hole
of the retaining block 16, and the retaining block 16 is fixedly connected
with the base 8.
Example 2:
As shown in Fig. 5, a mobile central chute detection apparatus, with a
structure as described in the
example 1, has the following differences: the central chute detection
apparatus further comprises a
dumbbell pin detection device 5 which is mounted on the base 8 and is
electrically connected with
the information processing device 6.
The dumbbell pin detection device 5 comprises a front retaining block 23, a
front
magneto-dependent sensor 24, a rear retaining block 26 and a rear magneto-
dependent sensor 27,
wherein, the front magneto-dependent sensor 24 and the rear magneto-dependent
sensor 27 are
mounted at one end of the front retaining block 23 and one end of the rear
retaining block 26
respectively, and the other end of the front retaining block 23 and the other
end of the rear retaining
block 26 are fixedly connected with the base 8. Magneto-dependent sensors are
arranged on the
front retaining block and the rear retaining block respectively, and
corresponding permanent
magnets 25 are arranged on the dumbbell pin 28; when the detection apparatus
passes through the
dumbbell pin, the magneto-dependent sensors will detect the permanent magnets
and transmit
signals to the information processing device.
Example 3:
A method for applying the central chute detection apparatus as described in
the example 2,
comprising the following steps:
First, the detection apparatus is mounted on central chutes, so that the
travelling wheels are fitted
with a toothed rack on the chutes of a coal cutter, the detection roller 10 of
the vertical offset
detection mechanism 3 clings to a top surface 9 of the chutes, and the
detection roller 21 of the
horizontal offset detection mechanism 4 clings to a side surface 22 of the
chutes; then, the electric
motor 7 drives the travelling wheels to travel along the toothed rack and
drives the entire detection
apparatus to move along the chute; during the movement process, when the
vertical offset detection
link rod 11 or horizontal offset detection link rod 17 has any angular change,
the angular
displacement sensor transmits a signal of detected angular change to the
signal processing module,
the signal processing module processes the angular change signal and then
transmits the data to an
external upper computer via the wireless communication module. When receiving
the data, the
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Description
upper computer uses an internal program to make a judgment. If the positions
of the chutes are
required to be adjusted, the upper computer transmits a signal to a hydraulic
support, so that the
hydraulic support operates and adjusts the positions of the chutes properly.
When the dumbbell pin detection device 5 detects that a dumbbell pin 28 falls
out or is broken, the
dumbbell pin detection device 5 transmits a signal to the signal processing
module, then the signal
processing module transmits the signal to the upper computer via the wireless
communication
module, so that the upper computer exercises control to stop the coal cutter,
to carry out service and
maintenance of the chutes.
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