Note: Descriptions are shown in the official language in which they were submitted.
CA 02986065 2017-11-15
BREAKING DETECTION DEVICE AND METHOD FOR DUMBBELL
PIN CONNECTED TO MIDDLE TROUGH
BACKGROUND
Technical Field
The present invention relates to a pin breaking detection device and method,
and more
particularly to a breaking detection device and method for a dumbbell pin
connected to a
middle trough.
Related Art
In a propulsion process of a fully mechanized coal mining face, a middle
trough of a
scraper conveyor is susceptible to a combined action of various loads such as
a dead load, a
coal carrying force and a pushing resistance, and is also affected by the
straightness of the
scraper conveyor, ground fluctuation, a bending angle between any adjacent
middle trough
sections and the own strength of a dumbbell pin, thus making it much easier to
result in
wearing and breaking of the middle trough and the dumbbell pin, or to
seriously result in
connection displacement or disconnection of the middle trough. The connection
strength of
a middle trough dumbbell pin seat is much stronger than that of the dumbbell
pin, and once
the dumbbell pin is broken, it can be judged that the middle trough fails in
connection.
At present, in a mine production process of the fully mechanized coal mining
face, a
breaking failure of a dumbbell pin connected to a middle trough is still
detected in a
traditional artificial manner, it is quite difficult to artificially
distinguish the non-obvious
displacement or disconnection of the middle trough and to replace a broken
dumbbell pin in
time, so a great potential safety hazard exists.
SUMMARY
The present invention is directed to a breaking detection device and method
for a
dumbbell pin connected to a middle trough, which are high in reliability, high
in accuracy
and easy to maintain.
To this end, the present invention adopts the technical solution as follows.
The
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breaking detection device comprises a locking device and a dumbbell pin
posture
monitoring device. A dumbbell pin and the dumbbell pin posture monitoring
device are
connected to a middle trough of a scraper conveyor, and all adjacent
components of the
locking device and the dumbbell pin posture monitoring device are connected
through
locating bolts. The dumbbell pin breaking detection device is arranged on one
side of a coal
shoveling plate, thus avoiding a stress impact in a pushing process.
The locking device is used for locating the dumbbell pin posture monitoring
device,
and comprises elastic locating rings and an elastic fastening ring, the
elastic fastening ring
being connected to an elastic support rod, and the elastic locating rings
being symmetrically
arranged at two ends of a pin rod of a dumbbell pin connected between any
adjacent middle
troughs. A cross universal joint is connected to a middle position of the
elastic support rod.
The cross universal joint consists of a transmitting base, a receiving base
and a cross
joint, an infrared transmitter being arranged in a chamber of the transmitting
base, an
infrared receiver being arranged in a chamber of the receiving base, the two
bases being
capable of rotating in horizontal and vertical directions, and lead holes
being used for wire
arrangement. Central holes are provided in the centers of both the
transmitting base and the
receiving base, and the lead holes are further provided in the transmitting
base and the
receiving base. The central holes of the transmitting base and the receiving
base are
identical to a central hole of the cross universal joint in size, central axes
of the central
holes being in the same horizontal line.
The dumbbell pin posture monitoring device is used for monitoring an infrared
signal,
and comprises the infrared receiver, the infrared transmitter and a signal
processing module,
the signal processing module being used for processing data of the infrared
signal. The
infrared receiver and the infrared transmitter of the dumbbell pin posture
monitoring device
are connected to an output end of the signal processing module. The signal
processing
module is connected to an upper computer through a wireless communication
network, the
upper computer implementing data processing storage display, real-time early
warning and
remote control. The wireless communication network comprises: a ZigBee node, a
ZigBee
wireless routing module and a ZigBee coordinator, the ZigBee routing module
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communicating with the upper computer in real time by adopting a CC2530 chip
selection
system. The upper computer comprises a signal processing system taking an ARM
chip as a
microprocessor, a digital display unit taking MCGS industrial control software
as a core,
and an automatic alarm device.
A detection method adopting a breaking detection device for a dumbbell pin
connected
to a middle trough, comprising the following steps:
a), uniformly numbering dumbbell pin posture monitoring devices connected
between
any adjacent scraper conveyors, receiving, by an infrared receiver, an
infrared signal
transmitted from an infrared transmitter of a detection device, connecting an
output end of
the infrared receiver to a signal processing module, decoding, by the signal
processing
module, the infrared signal, performing data conversion to obtain a
corresponding digital
value, electrically connecting the signal processing module to uniformly-
numbered ZigBee
node modules, and then transmitting data to an upper computer through a
wireless
communication network, the wireless communication network consisting of
multiple
groups of ZigBee router modules and coordinator modules and being capable of
selecting a
path in a multi-hop manner to transmit the data;
b), dumbbell pin breaking failure diagnosis: processing, by the upper
computer, the
data in real time, so as to obtain a theoretic intensity value NO of the
infrared signal
received by the infrared receiver and an actual intensity value N of the
infrared signal
collected by a ZigBee node in a detection process, setting a reference
variable as
MO%--IN-NOI/NO, and setting a threshold thereof as 10%, wherein when MO% is
approximate to 0, it is shown that a dumbbell pin normally works, when MO%
exceeds 10%,
it is shown that a cross universal joint deflects in a horizontal or vertical
direction, the
infrared signal cannot be normally received at this time, the dumbbell pin is
broken, and the
upper computer can judge the position of the broken dumbbell pin according to
the serial
numbers of the dumbbell pin posture monitoring devices and ZigBee node
networking ID
numbers; and
c), repeating the steps a and b, detecting a breaking condition of the
dumbbell pin in
real time, and processing, storing and displaying, by the upper computer, the
received data,
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so as to further achieve real-time early warning for a breaking failure of the
dumbbell pin
and remote control over a pushing action of a middle trough at a broken part.
Beneficial effects are as follows. Due to the adoption of the above-mentioned
solution,
once a dumbbell pin has a chain breaking failure, a cross universal joint
between a
transmitting base and a receiving base will deflect in a horizontal or
vertical direction, an
infrared signal cannot be normally received at this time, a breaking condition
of the
dumbbell pin is accurately judged by taking the intensity of the infrared
signal received by
the dumbbell pin breaking detection device as a reference, and an upper
computer can
quickly determine the position of the broken dumbbell pin, thus greatly
simplifying a
detection procedure, overcoming blindness and low efficiency of artificial
detection, and
providing a reliable reference for real-time early warning for the breaking
failure of the
dumbbell pin and remote control over a working face.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an arrangement diagram of a breaking detection device of the present
invention.
FIG. 2 is an installation diagram of a breaking detection device of the
present
invention.
FIG. 3 is a structural diagram of a locking device and a dumbbell pin posture
monitoring device of the present invention.
FIG. 4 is a connection diagram of a control device of the present invention.
In the drawings: 1, middle trough of scraper conveyor, 2, dumbbell pin, 21,
pin rod of
dumbbell pin, 3, dumbbell pin posture monitoring device, 31, locking device,
311, elastic
locating ring, 312, elastic fastening ring, 32, elastic support rod, 33, cross
universal joint,
331, transmitting base, 332, cross joint, 333, receiving base, 334, lead hole,
and 335, central
hole.
DETAILED DESCRIPTION
The present invention will be further explained hereinbelow in conjunction
with the
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drawings.
A breaking detection device comprises a locking device 31 and a dumbbell pin
posture
monitoring device. A dumbbell pin 2 and the dumbbell pin posture monitoring
device 3 are
connected to a middle trough 1 of a scraper conveyor, and all adjacent
components of the
locking device 31 and the dumbbell pin posture monitoring device 3 are
connected through
locating bolts. The dumbbell pin breaking detection device is arranged on one
side of a coal
shoveling plate, thus avoiding a stress impact in a pushing process.
The locking device 31 is used for locating the dumbbell pin posture monitoring
device,
and comprises elastic locating rings 311 and an elastic fastening ring 312,
the elastic
fastening ring 312 being connected to an elastic support rod 32, and the
elastic locating
rings 311 being symmetrically arranged at two ends of a pin rod 21 of a
dumbbell pin
connected between any adjacent middle troughs. A cross universal joint 33 is
connected to
a middle position of the elastic support rod 32.
The cross universal joint 33 consists of a transmitting base 331, a receiving
base 333
and a cross joint 332, an infrared transmitter being arranged in a chamber of
the
transmitting base 331, an infrared receiver being arranged in a chamber of the
receiving
base 333, the two bases being capable of rotating in horizontal and vertical
directions, and
lead holes 334 being used for wire arrangement. Central holes 335 are provided
in the
centers of both the transmitting base 331 and the receiving base 333, and the
lead holes 334
are further provided in the transmitting base 331 and the receiving base 333.
The central
holes of the transmitting base and the receiving base are identical to a
central hole of the
cross universal joint in size, central axes of the central holes being in the
same horizontal
line.
The dumbbell pin posture monitoring device 3 is used for monitoring an
infrared signal,
and comprises the infrared receiver, the infrared transmitter and a signal
processing module,
the signal processing module being used for processing data of the infrared
signal; the
infrared receiver and the infrared transmitter of the dumbbell pin posture
monitoring device
3 are connected to an output end of the signal processing module; the signal
processing
module is connected to an upper computer through a wireless communication
network, the
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upper computer implementing data processing storage display, real-time early
warning and
remote control; the wireless communication network comprises: a ZigBee node, a
ZigBee
wireless routing module and a ZigBee coordinator, the ZigBee routing module
communicating with the upper computer in real time by adopting a CC2530 chip
selection
system; and the upper computer comprises a signal processing system taking an
ARM chip
as a microprocessor, a digital display unit taking MCGS industrial control
software as a
core, and an automatic alarm device.
A detection method adopting a breaking detection device for a dumbbell pin
connected
to a middle trough, comprising the following steps:
a), uniformly numbering dumbbell pin posture monitoring devices connected
between
any adjacent scraper conveyors, receiving, by an infrared receiver, an
infrared signal
transmitted from an infrared transmitter of a detection device, connecting an
output end of
the infrared receiver to a signal processing module, decoding, by the signal
processing
module, the infrared signal, performing data conversion to obtain a
corresponding digital
value, electrically connecting the signal processing module to uniformly-
numbered ZigBee
node modules, and then transmitting data to an upper computer through a
wireless
communication network, the wireless communication network consisting of
multiple
groups of ZigBee router modules and coordinator modules and being capable of
selecting a
path in a multi-hop manner to transmit the data;
b), dumbbell pin breaking failure diagnosis: processing, by the upper
computer, the
data in real time, so as to obtain a theoretic intensity value NO of the
infrared signal
received by the infrared receiver and an actual intensity value N of the
infrared signal
collected by a ZigBee node in a detection process, setting a reference
variable as
MO%¨iN-NOI/NO, and setting a threshold thereof as 10%, wherein when MO% is
approximate to 0, it is shown that a dumbbell pin normally works, when MO%
exceeds 10%,
it is shown that a cross universal joint deflects in a horizontal or vertical
direction, the
infrared signal cannot be normally received at this time, the dumbbell pin is
broken, and the
upper computer can judge the position of the broken dumbbell pin according to
the serial
numbers of the dumbbell pin posture monitoring devices and ZigBee node
networking ID
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numbers; and
c), repeating the steps a and b, detecting a breaking condition of the
dumbbell pin in
real time, and processing, storing and displaying, by the upper computer, the
received data,
so as to further achieve real-time early warning for a breaking failure of the
dumbbell pin
and remote control over a pushing action of a middle trough at a broken part.
Embodiment 1: To this end, the present invention adopts the technical solution
as
follows.
In FIG. 1 and FIG. 2, a breaking detection device 3 for a dumbbell pin 2
connected to a
middle trough is shown. The breaking detection device comprises a locking
device 31 and a
dumbbell pin posture monitoring device. The locking device is used for
locating the
dumbbell pin posture monitoring device, and the posture monitoring device is
used for
monitoring an infrared signal. A signal processing module is used for
processing data of the
infrared signal, a wireless communication network consists of ZigBee wireless
data
transmission modules, and the ZigBee modules can communicate with an upper
computer
in real time by adopting a CC2530 chip selection system. The upper computer
comprises a
signal processing system taking an ARM chip as a microprocessor, a digital
display unit
taking MCGS industrial control software as a core, an automatic alarm device,
etc.
As shown in FIG. 2 and FIG. 3, the locking device comprises elastic locating
rings 311
and an elastic fastening ring 312, the elastic locating rings being
symmetrically arranged at
two ends of a pin rod 21 of a dumbbell pin connected between any adjacent
middle troughs
1. The posture monitoring device comprises an elastic support rod 32, an
infrared
transceiver and a cross universal joint 33. All adjacent components of the
locking device
and the dumbbell pin posture monitoring device are connected through locating
bolts.
The cross universal joint consists of a transmitting base 331, a receiving
base 333 and a
cross joint 332, an infrared transmitter is arranged in a chamber of the
transmitting base, an
infrared receiver is arranged in a chamber of the receiving base, the two
bases are capable
of rotating in horizontal and vertical directions, and lead holes 334 are used
for wire
arrangement.
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The dumbbell pin breaking detection device is arranged on one side of a coal
shoveling
plate, thus avoiding a stress impact in a pushing process. The transmitting
base and the
receiving base of the dumbbell pin posture monitoring device and the cross
universal joint
have central holes 335 of the same size, and central axes of the central holes
are in the same
horizontal line.
As shown in FIG. 4, a detection method adopting a breaking detection device
for a
dumbbell pin connected to a middle trough, comprising the following steps:
a), uniformly numbering dumbbell pin posture monitoring devices connected
between
any adjacent scraper conveyors, receiving, by an infrared receiver, an
infrared signal
transmitted from an infrared transmitter of a detection device, connecting an
output end of
the infrared receiver to a signal processing module, decoding, by the signal
processing
module, the infrared signal, performing data conversion to obtain a
corresponding digital
value, electrically connecting the signal processing module to uniformly-
numbered ZigBee
node modules, and then transmitting data to an upper computer through a
wireless
communication network, the wireless communication network consisting of
multiple
groups of ZigBee router modules and coordinator modules and being capable of
selecting a
path in a multi-hop manner to transmit the data;
b), dumbbell pin breaking failure diagnosis: processing, by the upper
computer, the
data in real time, so as to obtain a theoretic intensity value NO of the
infrared signal
received by the infrared receiver and an actual intensity value N of the
infrared signal
collected by a ZigBee node in a detection process, setting a reference
variable as
MO%¨IN-NOVNO, and setting a threshold thereof as 10%, wherein when MO% is
approximate to 0, it is shown that a dumbbell pin normally works, when MO%
exceeds 10%,
it is shown that a cross universal joint deflects in a horizontal or vertical
direction, the
infrared signal cannot be normally received at this time, the dumbbell pin is
broken, and the
upper computer can judge the position of the broken dumbbell pin according to
the serial
numbers of the dumbbell pin posture monitoring devices and ZigBee node
networking ID
numbers; and
c), repeating the steps a and b, detecting a breaking condition of the
dumbbell pin in
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real time, and processing, storing and displaying, by the upper computer, the
received data,
so as to further achieve real-time early warning for a breaking failure of the
dumbbell pin
and remote control over a pushing action of a middle trough at a broken part.
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