Mine shaft cage interlock car stopper

Abstract

The application discloses a mine vertical shaft cage linkage car stopper and relates to the technical field of mine car stoppers. The car stopper comprises a frame arranged below a track, a mounting seat arranged on the frame outside the track, a rotating shaft I arranged in the mounting seat, a car stopping block rotatably connected to the rotating shaft I, and a spring arranged on the rotating shaft I. The car stopper can clean the surface of the track through air holes I to avoid dust, and air holes II can form a gas diffusion layer to prevent dust from invading the rotating part, thereby reducing the probability of jamming. The pressure sensor and the position sensor can monitor two parameters to accurately diagnose faults such as jamming and loosening of the connecting rod II. In combination with dust data, the sensor faults and false alarms can be distinguished. The buffer structure can reduce impact damage and maintenance costs, and the transportation safety can be ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mine car stopper, in particular to a mine shaft cage linkage car stopper. BACKGROUND

[0002] In the mining operation, the shaft cage is a key transportation equipment connecting underground and ground, and its operation safety is directly related to the production efficiency and personnel safety of the mine. The cage linkage car stopper is the core safety device of the shaft transportation system, mainly used for precise positioning and reliable braking when the mine car enters and exits the cage, to prevent accidents such as mine car rolling and derailment. At present, the mine shaft cage linkage car stopper widely adopts pneumatic driving mode, with the advantages of rapid power response and simple structure maintenance, and is widely used in various mine environments.

[0003] However, the mine operation environment has the characteristics of high dust, high humidity and strong vibration, and the car stopper faces many technical problems in the long-term use process, which seriously affects its working reliability and service life. Specifically, the following problems are particularly prominent:

[0004] 1. Dust pollution causes equipment wear and failure, and a large amount of coal dust, rock dust and other particulate matter is attached to the surface of the mine car during mine transportation. When the mine car rolls and collides with the car stopper, the violent impact will cause a large amount of dust to scatter and accumulate on the surface of the car stopper and the gap between the key components. The dust invasion at the rotating points of the car stopper block, connecting rod, shaft and other parts will increase the friction and wear, not only increase the equipment running resistance, but also cause the rotating jam, so that the car stopper cannot normally switch the working state.

[0005] 2. The equipment abnormal state monitoring and diagnosis capability is insufficient, and the driving and transmission system of the car stopper is long-term operated in harsh environment, and the resistance of each rotating point will increase due to wear, and the connecting rod, joint and other components are prone to looseness, misalignment and other problems, which will further cause structure jamming or action out of position and other faults. In the prior art, the monitoring means of the car stopper running state is single, usually relying on manual inspection to judge whether the equipment is normal, which is difficult to find potential faults in real time. The lack of monitoring capability makes fault troubleshooting time-consuming and laborious, not only affecting the mine transportation efficiency, but also possibly causing safety accidents due to failure to find faults in time.

[0006] Therefore, in view of the problems of dust pollution, wear aggravation and fault monitoring lag of the cage linkage car stopper in the mine harsh environment, it is urgent to develop a technical scheme with active dust cleaning function, intelligent state monitoring and precise fault diagnosis capability, to improve the operation reliability and safety of the car stopper, reduce the equipment maintenance cost, and ensure the efficient and stable operation of the mine shaft transportation system. SUMMARY

[0007] The technical problem solved by the present application is to overcome the deficiencies of the prior art and provide a mine shaft cage linkage car stopper that can overcome the above problems or at least partially solve the above problems.

[0008] To solve the above technical problems, the basic idea of the technical solution of the present application is: a mine shaft cage linkage car stopper, comprising a frame arranged below a track, further comprising: a mounting seat arranged on the frame outside the two tracks respectively; a rotating shaft I sleeved in the mounting seat; a car stopping block rotatably connected to the rotating shaft I, a spring being sleeved on the rotating shaft I for providing a buffer damping for the car stopping block; a driving assembly for driving the car stopping block to turn over on the mounting seat and approach the surface of the track; a gas hole I arranged on the two side surfaces of the car stopping block respectively for cleaning the surface of the track; a gas hole II arranged on the front end surface of the car stopping block for forming a gas diffusion layer with the outer surface of the track when the car stopping block turns over and approaches the track, for cleaning the dust at the mounting seat; a monitoring unit comprising a pressure sensor and a position sensor, the pressure sensor being used for monitoring the working pressure of the driving assembly, and the position sensor being used for monitoring the turning position of the car stopping block, and the monitoring unit judging the abnormal state of the driving assembly according to the monitoring results.

[0009] Preferably, the driving assembly comprises a rotating shaft II rotatably connected to the frame, a double-head cam being mounted on the rotating shaft II, and two connecting rods II being respectively mounted on the double-head cam, one end of each of the two connecting rods II being connected to a connecting plate on the adjacent car stopping block.

[0010] Preferably, the driving assembly further comprises a gas cylinder mounted on the frame, an L-shaped plate being rotatably connected to the frame, an execution end of the gas cylinder being connected to the L-shaped plate, a single-head cam being mounted on the rotating shaft II, the single-head cam being connected to the L-shaped plate through a connecting rod I, and the single-head cam being vertically distributed with the double-head cam.

[0011] Preferably, the pressure sensor is mounted on an air inlet pipe close to the gas cylinder for monitoring the real-time pressure of the working chamber of the gas cylinder, and the position sensor is mounted on the mounting seat on one side of the car stopping block.

[0012] Preferably, the driving assembly abnormal state judgment logic through the pressure sensor and the position sensor comprises:

[0013] The reference pressure value of the pressure sensor is P0, P0 is the stable pressure value when the car stopper operates smoothly in a clean and non-wearing state, the normal threshold value of the pressure sensor is P0×(1-Δ1) to P0×(1+Δ1), wherein Δ1 is a normal fluctuation deviation threshold value, Δ1=10%;

[0014] When the pressure sensor monitoring value is greater than the reference pressure value P0x(1+Δ2), and both position sensors have no signal change, it is determined that the abnormal jam, wherein Δ2 is a preset jam deviation threshold Δ2≥50%; when the pressure sensor monitoring value is greater than the reference pressure value P0x(1+Δ3), and Δ3>Δ2, it is determined that the serious jam, wherein Δ3 is a serious jam deviation threshold, Δ3=100%;

[0015] When the pressure sensor monitoring value is less than the reference pressure value P0x(1-Δ5), and Δ5>Δ4, and both position sensors have no signal change, it is determined that the double-side connecting rod II is loose, wherein Δ5 is a serious pressure loss deviation threshold, Δ4=30%, Δ5=60%;

[0016] When the pressure sensor monitoring value is between P0x(1-Δ5) and P0x(1-Δ1), and the single-side position sensor has no signal change, it is determined that the single-side connecting rod II is loose, wherein Δ5 is a preset serious pressure loss deviation threshold Δ5≥60%, Δ1 is a normal fluctuation deviation threshold Δ1≤10%.

[0017] Preferably, the drive assembly abnormal state judgment logic further comprises:

[0018] When the pressure sensor monitoring value is normal, the position sensor signal fluctuates, and the car stopping block does not reach the specified position, it is determined that the connecting rod I adjustment interval is too large or too small, causing the double-head cam to fail to tend to be horizontal with the frame;

[0019] When the pressure sensor monitoring value is less than the reference pressure value P0x(1-Δ5), and the position sensor signal changes normally, it is determined that the pressure sensor is faulty.

[0020] Preferably, the drive assembly abnormal state judgment logic further comprises:

[0021] A cleaning air pipe is arranged on the frame, and an air outlet end of the cleaning air pipe faces the position sensor;

[0022] After the position sensor is cleaned by the cleaning air pipe, if the position sensor still has no signal, it is determined that the position sensor is faulty;

[0023] After the position sensor is cleaned by the cleaning air pipe, if the position sensor signal is restored, it is determined that the false alarm caused by dust shielding, wherein the start of the cleaning air pipe is triggered based on the concentration monitoring result of the laser dust sensor.

[0024] Preferably, a laser dust sensor is arranged on the frame outside the track, and when the dust concentration monitored by the laser dust sensor is greater than a dust warning threshold, a dust accumulation warning under the track is issued,

[0025] Wherein, the reference dust concentration is C0, C0 is the environmental dust concentration when the car stopper passes through the non-mining car, C0 = 10 mg / m 3 ; the dust early warning threshold: when the monitoring concentration > C0 x (1 + Δ C ), Δ C is the dust deviation threshold, Δ C = 200%.

[0026] Preferably, the monitoring data of the laser dust sensor is used to assist in determining the fault state of the pressure sensor, and the auxiliary determination logic comprises:

[0027] When the pressure sensor monitoring value is less than the reference pressure value P0 x (1- Δ5), and Δ5 > Δ4, and the position sensor signal is normal, if the laser dust sensor monitors that the dust concentration in the pressure sensor installation area is < C0 x (1 + Δ C ), the pressure sensor is determined to be faulty.

[0028] Preferably, the monitoring data of the laser dust sensor is used to assist in determining the fault state of the position sensor, and the auxiliary determination logic comprises:

[0029] When the position sensor has no signal output, if the laser dust sensor monitors that the dust concentration is > C0 x (1 + Δ C ), the position sensor is cleaned by the cleaning air pipe, and after cleaning, the position sensor signal is restored, then it is determined that the temporary signal anomaly is caused by dust obstruction.

[0030] When the position sensor has no signal output, if the laser dust sensor monitors that the current dust concentration is ≤ C0 x (1 + Δ C ), but the position sensor still has no signal after being cleaned for 5-10 seconds, dust interference is excluded, and it is determined that the position sensor is faulty.

[0031] After the above technical scheme is adopted, the present application has the following beneficial effects compared with the prior art:

[0032] 1. The mine shaft cage linkage car stopper sprays air through the air holes one and two of the car stopper block to reduce the dust raised when the mine car runs on the track, reduce the dust friction when the mine car contacts the track, reduce the wear of the track, improve the service life of the track, reduce the wear of the mine car and the track, and further reduce the influence of the metal dust generated by wear on the smooth operation of the structure.

[0033] 2、The mine shaft cage linkage car stopper, the laser dust sensor monitors the dust concentration below the track in real time, triggers a warning when the concentration exceeds C0x(1+200%), avoids structural jam caused by dust accumulation, and can detect potential problems earlier than traditional manual inspection.

[0034] 3、The mine shaft cage linkage car stopper, through the double-parameter monitoring of "pressure sensor + position sensor", combined with quantitative threshold logic, can distinguish abnormal jam (pressure exceeds the reference value by 50% and the position of the car stop block does not change), severe jam (pressure exceeds the reference value by 100%), connection rod two loosening (pressure is lower than the reference value by 40%-60% and the position signal is abnormal), and improper adjustment of the connection rod one.

[0035] 4、The mine shaft cage linkage car stopper, using the laser dust sensor to assist in judging the sensor state, when the pressure sensor reading is abnormal but the position signal is normal and the dust concentration is not over limit, it is determined as a pressure sensor failure; when the position sensor has no signal, combined with the dust concentration and the signal recovery after cleaning, it can distinguish between dust obstruction false alarm and real sensor failure, reducing invalid maintenance.

[0036] 5、The mine shaft cage linkage car stopper, the intelligent monitoring system of the device captures the abnormal state of the equipment in real time, replaces the traditional manual inspection mode, detects potential faults (such as jam and loosening) in advance, shortens the fault troubleshooting time, and reduces the maintenance labor cost; through the dust warning, fault diagnosis and active cleaning function, it can avoid accidents such as mine car sliding down the slope and derailment caused by the failure of the car stopper, ensure the efficient and stable operation of the mine shaft transportation system, and improve the operation safety.

[0037] The specific embodiments of the present application will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0038] In the drawings:

[0039] Figure 1 A perspective structural diagram of a mine shaft cage linkage car stopper is provided. Figure 1 ;

[0040] Figure 2 A perspective structural diagram of a mine shaft cage linkage car stopper is provided. Figure 2 ;

[0041] Figure 3 A structural diagram of the connection rod one, the connection rod two and the L-shaped plate of the mine shaft cage linkage car stopper is provided.

[0042] Figure 4 A structural diagram of the track, the frame and the sub-frame of the mine shaft cage linkage car stopper is provided.

[0043] Figure 5 The structure diagram of the gas diffusion layer of the mine shaft cage linkage car stopper is provided in the application;

[0044] Figure 6 The structure diagram of the mounting seat, spring, and gas hole one of the mine shaft cage linkage car stopper is provided in the application;

[0045] Figure 7 The separation structure diagram of the rotating shaft one and connecting plate of the mine shaft cage linkage car stopper is provided in the application;

[0046] Figure 8 The separation structure diagram of the position sensor and rotating shaft one of the mine shaft cage linkage car stopper is provided in the application;

[0047] Figure 9 The structure diagram of the gas hole two of the mine shaft cage linkage car stopper is provided in the application;

[0048] Figure 10 The structure diagram of the single-head cam of the mine shaft cage linkage car stopper is provided in the application;

[0049] Figure 11 The structure diagram of the rotating shaft two of the mine shaft cage linkage car stopper is provided in the application.

[0050] In the figure: 1, frame; 11, sub-frame; 12, track;

[0051] 13, mounting seat; 130, movable area; 131, rotating shaft one; 1311, first section; 1312, second section; 132, car stopping block; 1321, gas hole one; 1322, gas hole two; 1323, connecting plate; 133, spring; 134, position sensor;

[0052] 14, rotating shaft two; 141, connecting seat;

[0053] 15, gas cylinder; 151, air inlet pipe; 152, pressure sensor; 153, L-shaped plate; 154, U-shaped connecting block; 155, connecting rod one; 156, single-head cam;

[0054] 16, double-head cam; 161, connecting rod two;

[0055] 2, gas diffusion layer. DETAILED DESCRIPTION

[0056] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to explain the present application but not to limit the scope of the present application.

[0057] The technical solutions provided by the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Figure 1 -Appendix Figure 11 The technical solutions provided by the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0058] Embodiment 1: with reference to Figures 1-11 A mine shaft cage linkage car arrester, specifically comprising:

[0059] The base frame assembly: the frame 1 is arranged below the track 12, the mounting seat 13 is mounted on the frame 1 outside the two tracks 12, the rotating shaft one 131 is sleeved in the mounting seat 13, the car stopping block 132 is rotationally connected on the rotating shaft one 131, the spring 133 is sleeved on the rotating shaft one 131, the rotating shaft one 131 comprises a first section 1311 and a second section 1312, the diameter of the first section 1311 is larger than that of the second section 1312, the first section 1311 extends into the movable area 130 of the mounting seat 13, the car stopping block 132 is sleeved on the second section 1312 close to the first section 1311, and the car stopping block 132 is located in the movable area 130, one end of the rotating shaft one 131 is threadedly connected with a nut, the spring 133 is located between the side wall of the mounting seat 13 and the nut, when the mine car wheel contacts the car stopping block 132, the car stopping block 132 contacts the first section 1311, the rotating shaft one 131 is pulled to press the spring 133, buffer damping is provided for the contact between the mine car and the car stopping block 132, the instantaneous load of the mine car impact on the car stopping block 132 and the transmission component is reduced, and mechanical damage is reduced.

[0060] Driving assembly: including the rotating shaft two 14 which is rotatably connected on the frame 1, the connecting seat 141 is installed on the frame 1, both ends of the rotating shaft two 14 are rotatably connected in the connecting seat 141, the double head cam 16 and the single head cam 156 are installed on the rotating shaft two 14 in the form of sleeve, which are vertically distributed, specifically, the key groove is formed on the rotating shaft two 14, the corresponding key grooves are also formed on the inner hole walls of the double head cam 16 and the single head cam 156, the double head cam 16 and the single head cam 156 are fixed on the rotating shaft two 14 through the cooperation of the key grooves and the keys; the connecting plate 1323 on the blocking block 132 and the double head cam 16 are rotatably connected with the U-shaped connecting block 154, therefore the connecting rod two 161 is connected between the connecting plate 1323 and the double head cam 16 through the U-shaped connecting block 154, both ends of the connecting rod two 161 are provided with external threads and are threadedly connected with the U-shaped connecting block 154, and the locking nut is threadedly connected on the connecting rod two 161; the air cylinder 15 is installed on the frame 1, the execution end of the air cylinder 15 is hingedly connected with the L-shaped plate 153 through the U-shaped connecting block 154, the other end of the L-shaped plate 153 is connected with the single head cam 156 through the connecting rod one 155, and the L-shaped plate 153 and the single head cam 156 are both hingedly connected with the U-shaped connecting block 154, both ends of the connecting rod one 155 are threadedly connected with the U-shaped connecting blocks 154 on the L-shaped plate 153 and the single head cam 156, forming a complete transmission link.

[0061] The side of the frame 1 is provided with the auxiliary frame 11, the air cylinder 15 and the L-shaped plate 153 are located in the auxiliary frame 11, and the end of the air cylinder 15 is rotatably connected with the auxiliary frame 11.

[0062] It should be noted that the U-shaped connecting block 154 has a certain activity gap with the double head cam 16, the single head cam 156, the L-shaped plate 153 and the connecting plate 1323, so that when the blocking block 132 is impacted by the mine car wheel, the blocking block 132 can have a certain displacement space, and the connecting rod one 155 and the connecting rod two 161 will not be pulled off or bent.

[0063] Dust cleaning assembly: the air holes one 1321 are formed on the two side surfaces of the blocking block 132, the air holes two 1322 are formed on the front end surface, and the air holes one 1321 and the air holes two 1322 are in communication with the mine compressed air path; when the blocking block 132 is turned to be close to the track 12, the air outlet end of the air holes one 1321 faces the surface of the track 12, and the track 12 surface is cleaned by air jet; the air holes two 1322 face the outer side surface of the track 12, the gas diffusion layer 2 is formed by reflecting the ejected gas on the track 12, covering the mounting seat 13 and the surrounding components, and reducing the dust invasion into the rotating gap.

[0064] The monitoring unit: the three-way joint is connected in series with the pressure sensor 152 on the intake pipe 151 of the cylinder 15, for monitoring the working cavity pressure of the cylinder; the position sensor 134 is installed on the mounting seat 13 on one side of the blocking block 132, for monitoring the overturning position of the blocking block 132, to avoid the blocking block 132 from overturning to an improper position when it is activated; the laser dust sensor is installed on the frame 1 outside the track 12, and the monitoring range covers the area below the track 12 and the installation area of the pressure sensor 152 and the position sensor 134.

[0065] In the formula, the position sensor 134 is an inductive proximity switch that senses the metal surface of the blocking block 132 and outputs a signal; the sampling frequency of the laser dust sensor is 1 time per second.

[0066] In use, when the blocking block 132 needs to be activated, the execution end of the cylinder 15 shortens the L-shaped plate 153 and makes the L-shaped plate 153 rotate, the L-shaped plate 153 pushes the connecting rod one 155 when rotating, the connecting rod one 155 pushes the rotating shaft two 14 to rotate through the single-head cam 156, the rotating shaft two 14 rotates, so that the double-head cam 16 tends to be horizontal with the frame 1, at this time, the connecting rod two 161 is pushed and transmits the force to the blocking block 132, so that the blocking block 132 rotates on the mounting seat 13 and approaches the track 12, so that part of the blocking block 132 is located on the track 12, realizing the limiting or fixing of the mine car on the track 12.

[0067] When the blocking block 132 needs to be separated from the track 12, the execution end of the cylinder 15 pushes the L-shaped plate 153, so that the blocking block 132 is separated from the track 12.

[0068] It should be understood that, with reference to Figure 11 The connection between the execution end of the cylinder 15 and the L-shaped plate 153 is in a staggered manner, and the cylinder 15 is lower than the installation surface of the L-shaped plate 153, to avoid collision between the connecting rod one 155 and the cylinder 15.

[0069] When the blocking block 132 approaches the track 12, the gas path of the mine compressed gas equipment supplies gas to the gas hole one 1321 and the gas hole two 1322, the gas in the gas hole one 1321 is sprayed to blow the surface of the track 12, to remove the dust accumulation and avoid dust overflowing when the mine car contacts and abnormal wear of the track 12; the gas hole two 1322 faces the outer side of the track 12, the sprayed gas is reflected by the outer side of the track 12 to form a large-area gas diffusion layer 2, covering the key rotating components such as the mounting seat 13, the rotating shaft one 131, and the connecting rod two 161, to prevent dust from entering the gap and reduce friction and wear.

[0070] In some embodiments, the monitoring of the abnormal state of the driving assembly by the pressure sensor 152 and the position sensor 134 includes the following judgment logic:

[0071] The reference pressure value of the pressure sensor 152 is P0, which is tested three times in the cleaning and non-wearing state, and the reference pressure value is recorded. The normal threshold of the pressure sensor 152 is P0x(1-Δ1) to P0x(1+Δ1), wherein Δ1 is a normal fluctuation deviation threshold, and Δ1=10%;

[0072] When the monitoring value of the pressure sensor 152 is greater than the reference pressure value P0x(1+Δ2), and both position sensors 134 have no signal change, it is determined that the abnormal jam occurs, wherein Δ2 is a preset jam deviation threshold Δ2≥50%;

[0073] When the monitoring value of the pressure sensor 152 is greater than the reference pressure value P0x(1+Δ3), and Δ3>Δ2, it is determined that the serious jam occurs, wherein Δ3 is a serious jam deviation threshold, and Δ3=100%;

[0074] When the monitoring value of the pressure sensor 152 is less than the reference pressure value P0x(1-Δ5), and Δ5>Δ 4， and both position sensors 134 have no signal change, it is determined that the double-side connecting rod two 161 is loose, wherein Δ5 is a serious pressure loss deviation threshold, Δ4=30%, and Δ5=60%;

[0075] When the monitoring value of the pressure sensor 152 is between P0x(1-Δ5) and P0x(1-Δ1), and the signal of the single-side position sensor 134 has no change, it is determined that the single-side connecting rod two 161 is loose, wherein Δ5 is a preset serious pressure loss deviation threshold Δ5≥60%, and Δ1 is a normal fluctuation deviation threshold Δ1≤10%.

[0076] In some embodiments, the drive assembly abnormal state judgment logic further comprises:

[0077] When the monitoring value of the pressure sensor 152 is normal, the signal of the position sensor 134 fluctuates, and the arresting block 132 does not reach the specified position, it is determined that the adjusting distance of the connecting rod one 155 is too large or too small, which causes the double-head cam 16 to be unable to be horizontal with the frame 1, and maintenance is required, wherein the distance of the connecting rod one 155 may change due to the vibration generated by the operation of the mine car;

[0078] When the monitoring value of the pressure sensor 152 is less than the reference pressure value P0x(1-Δ5), and the signal of the position sensor 134 changes normally, it is determined that the pressure sensor 152 is faulty.

[0079] In some embodiments, the drive assembly abnormal state judgment logic further comprises:

[0080] A cleaning air pipe is arranged on the frame 1, and the air outlet end of the cleaning air pipe faces the position sensor 134;

[0081] If the position sensor 134 still has no signal after the cleaning of the air pipe, it is determined that the position sensor 134 is faulty;

[0082] If the position sensor 134 signal is restored after the cleaning of the air pipe, it is determined that the false alarm caused by dust shielding, wherein the start of the cleaning of the air pipe is triggered based on the concentration monitoring result of the laser dust sensor;

[0083] The laser dust sensor is arranged on the frame 1 outside the track 12, and when the dust concentration monitored by the laser dust sensor is greater than the dust early warning threshold, a dust accumulation early warning under the track 12 is issued to remind the staff to clean the dust under the track 12 in time to avoid excessive dust accumulation, which causes the dust to be raised when the air hole 1322 exhausts, wherein the reference dust concentration is C0, C0 is the environmental dust concentration when there is no mine car passing around the car stopper, C0 = 10 mg / m 3 ; the dust early warning threshold: when the monitoring concentration > C0 x (1 + Δ C ), Δ C is the dust deviation threshold, Δ C = 200%.

[0084] In some embodiments, the monitoring data of the laser dust sensor is used to assist in determining the fault state of the pressure sensor 152, and the auxiliary judgment logic includes:

[0085] When the monitoring value of the pressure sensor 152 is less than the reference pressure value P0 x (1-Δ5), and Δ5>Δ 4， , and the position sensor 134 signal is normal, if the dust concentration monitored by the laser dust sensor in the installation area of the pressure sensor 152 is < C0 x (1 + Δ C ), it is determined that the pressure sensor 152 is faulty.

[0086] In some embodiments, the monitoring data of the laser dust sensor is used to assist in determining the fault state of the position sensor 134, and the auxiliary judgment logic includes:

[0087] When the position sensor 134 has no signal output, if the dust concentration monitored by the laser dust sensor is > C0 x (1 + Δ C ), the position sensor 134 is cleaned by the cleaning air pipe, and after cleaning, the position sensor 134 signal is restored, it is determined that the temporary signal anomaly caused by dust shielding;

[0088] When the position sensor 134 has no signal output, if the laser dust sensor monitors that the current dust concentration is ≤ C0 x (1 + Δ CIf the position sensor 134 still has no signal 5-10 seconds after cleaning, the dust interference is excluded, and it is determined that the position sensor 134 is faulty.

[0089] Therefore, through the double-parameter monitoring of the "pressure sensor 152 + position sensor 134", combined with the quantitative threshold logic, the following mechanical faults can be distinguished: abnormal jamming (pressure exceeds the reference value by 50% and the position of the blocking block 132 does not change), severe jamming (pressure exceeds the reference value by 100%), loosening of the connecting rod two 161 (pressure is lower than the reference value by 40%-60% and the position signal is abnormal), and improper adjustment of the spacing of the connecting rod one 155.

[0090] The present application aims at the dust pollution and fault monitoring problems faced by the car stopper in the harsh environment of the mine. Instead of simply increasing the cleaning frequency or strengthening the structural strength, the device uses a comprehensive solution of active dust prevention + multi-parameter intelligent monitoring + self-adaptive fault diagnosis.

[0091] In terms of dust prevention and control, the double air holes (air hole one 1321, air hole two 1322) of the blocking block 132 are ingeniously utilized to act on the surface of the track 12 and the periphery of the rotating part, forming a comprehensive dust protection. In terms of fault monitoring, multi-dimensional data of pressure, position and dust concentration are integrated to establish quantitative fault judgment logic, realizing accurate positioning from fault phenomenon to reason. This innovative idea of deeply combining structural design, pneumatic principle and intelligent monitoring breaks through the limitations of traditional car stopper single function design.

[0092] The above description is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the scope of the present application, and any simple modification, equivalent change and modification of the above-mentioned technical content within the scope of the present application are still within the scope of the present application.

Claims

1. A mine shaft cage interlock car stop comprising a frame (1) arranged below a track (12), characterized in that, Also include: mounting seat (13) is respectively installed on the frame (1) outside the two said track (12); rotary shaft one (131), set in the mounting seat (13); Blocking block (132), rotatingly connected to the rotary shaft one (131), the rotary shaft one (131) is provided with a spring (133), for providing damping for the blocking block (132); Drive assembly for driving the blocking block (132) on the mounting seat (13) to turn close to the surface of the track (12); Air hole one (1321) is respectively opened in the two side faces of the blocking block (132), which is used to clean the surface of the track (12); Air hole two (1322) is opened on the front end face of the blocking block (132), which is used to form a gas diffusion layer (2) with the outside surface of the track (12) when the blocking block (132) turns close to the track (12), to clean the dust at the mounting seat (13); Monitoring unit, including pressure sensor (152), position sensor (134), the pressure sensor (152) is used for monitoring the working pressure of the drive assembly, the position sensor (134) is used for monitoring the turning position of the blocking block (132), the monitoring unit judges the abnormal state of the drive assembly according to the monitoring result; The drive assembly comprises a rotary shaft two (14) rotatingly connected to the frame (1), a double-headed cam (16) is mounted on the rotary shaft two (14), and a connecting rod two (161) is respectively mounted on the double-headed cam (16); one end of the two connecting rod two (161) is respectively connected with the connecting plate (1323) on the adjacent blocking block (132); The drive assembly further comprises a gas cylinder (15) mounted on the frame (1), an L-shaped plate (153) is rotatingly connected to the frame (1), the execution end of the gas cylinder (15) is connected with the L-shaped plate (153), a single-headed cam (156) is mounted on the rotary shaft two (14), the single-headed cam (156) and the L-shaped plate (153) are connected through a connecting rod one (155), and the single-headed cam (156) and the double-headed cam (16) are vertically distributed; The pressure sensor (152) and the position sensor (134) are used to monitor the abnormal state of the drive assembly, and the logic comprises: The reference pressure value of the pressure sensor (152) is P0, P0 is the stable pressure value when the blocking device moves smoothly in the clean and non-wearing state, the normal threshold value of the pressure sensor (152) is P0× (1-Δ1) to P0× (1+Δ1), wherein Δ1 is the normal fluctuation deviation threshold value, Δ1=10%; When the monitoring value of the pressure sensor (152) is greater than the reference pressure value P0× (1+Δ2), and the two position sensors (134) have no signal change, it is determined that the abnormality is stuck, wherein Δ2 is a preset stuck deviation threshold value Δ2≥50%; when the monitoring value of the pressure sensor (152) is greater than the reference pressure value P0× (1+Δ3), and Δ3>Δ2, it is determined that the serious stuck, wherein Δ3 is a serious stuck deviation threshold value, Δ3=100%; When the pressure sensor (152) monitors a value less than the reference pressure value P0x (1-Δ5), and Δ5>Δ4, and both position sensors (134) have no signal change, it is determined that the connecting rod two (161) on both sides is loose, wherein Δ5 is a serious pressure deviation threshold, Δ4=30%, and Δ5=60%; When the pressure sensor (152) detects a value between P0x (1-Δ5) and P0x (1-Δ1), and the single position sensor (134) has no signal change, it is determined that the connecting rod two (161) on one side is loose, wherein Δ5 is a preset serious pressure deviation threshold Δ5≥60%, and Δ1 is a normal fluctuation deviation threshold Δ1≤10%; The abnormal state judgment logic of the driving assembly further includes: when the pressure sensor (152) monitors a normal value, the position sensor (134) signal fluctuates, and the car stopping block (132) does not reach the specified position, it is determined that the adjusting interval of the connecting rod one (155) is too large or too small; when the pressure sensor (152) monitors a value less than the reference pressure value P0x (1-Δ5), and the position sensor (134) signal changes normally, it is determined that the pressure sensor (152) is faulty; A cleaning air pipe is arranged on the frame (1), and an air outlet end of the cleaning air pipe faces the position sensor (134); After the position sensor (134) is cleaned by the cleaning air pipe, if the position sensor (134) still has no signal, it is determined that the position sensor (134) is faulty; After the position sensor (134) is cleaned by the cleaning air pipe, if the position sensor (134) signal is restored, it is determined that the false alarm caused by dust shielding, wherein the start of the cleaning air pipe is triggered based on the concentration monitoring result of the laser dust sensor.

2. A mine shaft cage interlock car retarder according to claim 1, characterised in that, The pressure sensor (152) is installed on the intake pipe (151) close to the air cylinder (15), for monitoring the real-time pressure of the working chamber of the air cylinder (15), and the position sensor (134) is installed on the mounting seat (13) on one side of the car stopping block (132).

3. The mine shaft cage interlock car retarder according to claim 1, characterized in that, A laser dust sensor is arranged on the frame (1) outside the track (12), and when the dust concentration monitored by the laser dust sensor is greater than a dust warning threshold, a dust accumulation warning under the track (12) is issued.

4. A mine shaft cage interlock car retarder according to claim 3, characterised in that, The monitoring data of the laser dust sensor is used to assist in judging the fault state of the pressure sensor (152).

5. A mine shaft cage interlock car retarder according to claim 3, characterised in that, The monitoring data of the laser dust sensor is used to assist in judging the fault state of the position sensor (134); When the position sensor (134) has no signal output, if the laser dust sensor monitors that the current dust concentration ≤ C0x (1+Δ c ), but the position sensor (134) still has no signal after being cleaned for 5-10 seconds, the dust interference is excluded, and it is determined that the position sensor (134) is faulty.

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