A braking rod control device for a safety production braking mine car

Abstract

A braking rod control device for a safety production braking mine car, comprising an explosion-proof box. A release mechanism is provided inside the explosion-proof box, and a control device is provided outside the explosion-proof box. The release mechanism includes an elastic retraction device arranged inside the explosion-proof box. A retractable rod that can slide inside the elastic retraction device is provided inside the elastic retraction device. A connecting rod is provided at the outer end of the retractable rod. A magnetic blocker for controlling the braking rod is provided at one end of the connecting rod that is not connected to the retractable rod. A through hole is provided on one side of the explosion-proof box, and a linear bearing is provided inside the through hole. The connecting rod is arranged inside the linear bearing and can move back and forth inside the linear bearing. This application will not be affected or interfered by any external factors, is waterproof and explosion-proof, has zero power consumption during standby, has a long service life, and does not require maintenance within a cycle. The special design of the release mechanism makes it easy to retract and release the braking rod, and the structure is simple and reliable with high reliability.

Description

Technical Field

[0001] The present invention relates to the field of mine car braking, and a braking rod control device for safely producing and braking mine cars. Background Art

[0002] A non-powered vehicle is one of the most widely used transportation equipment in underground mine transportation. During underground transportation, uphill and downhill transportation is an important transportation link. However, during uphill and downhill transportation, runaway accidents often occur. A non-powered mine car with a load of several tons will accelerate during an uncontrolled runaway, which will cause great harm to track workers.

[0003] There is currently a kind of mine car for preventing mine car runaway accidents. When braking, a braking rod will be released under the car body. The braking rod will fall by its own gravity and insert into the track sleeper to forcibly brake the mine car. Because the braking mechanism of this type of mine car is simple and has a high cost performance, it has been widely promoted and applied.

[0004] However, whether the existing braking mechanism can brake smoothly, the braking rod release device is the core of the whole system. The existing technology uses a rotary hook release device, which has disadvantages such as large release resistance and easy bending, and has a low reliability, and the braking release often fails. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a braking rod control device for safely producing and braking mine cars, which can release the braking rod quickly, durably and reliably.

[0006] The technical solution of the present application is as follows:

[0007] A braking rod control device for safely producing and braking mine cars, including an explosion-proof box. A release mechanism is provided inside the explosion-proof box, and a control device is provided outside the explosion-proof box. It is characterized in that the release mechanism includes an elastic retraction device arranged inside the explosion-proof box. A retractable rod that can slide inside the elastic retraction device is arranged inside the elastic retraction device. A connecting rod is provided at the outer end of the retractable rod. A magnetic blocker for controlling the braking rod is provided at one end of the connecting rod that is not connected to the retractable rod. A through hole is provided on one side of the explosion-proof box, and a linear bearing is provided inside the through hole. The connecting rod is arranged inside the linear bearing and can move back and forth inside the linear bearing.

[0008] Further, the elastic retraction device includes a mounting frame, which internally houses a locking block. The locking block is connected to a retraction rod, and a spring is provided on the retraction rod. A baffle is arranged in the mounting frame between the spring and the locking block. High-speed servos are provided on both sides of the locking block, and the high-speed servos are controlled by a servo controller. A groove is provided on the locking block, and a rotating limit block is arranged in the groove. The rotating limit block is connected to the high-speed servo through a servo shaft and moves with the high-speed servo. Locking contacts for limiting the high-speed servo are provided on the inner side of the baffle and the outer side of the high-speed servo.

[0009] Further, the control device includes a battery box and a control switch. The control switch includes a reed switch and a relay. The battery boxes are two and are respectively arranged on both sides of the explosion-proof box. The battery box includes a first battery box and a second battery box. Batteries are provided in both the first battery box and the second battery box. A reed switch and a relay are provided in the first battery box. The reed switch, the relay, and the elastic retraction device rely on the batteries in the first battery box and the second battery box to form a circuit connection.

[0010] Further, the battery is a lithium thionyl chloride battery. 4 lithium thionyl chloride batteries are provided in the first battery box, and 3 lithium thionyl chloride batteries are provided in the second battery box. The relay is a four-contact relay. 3 lithium thionyl chloride batteries in the first battery box and 3 lithium thionyl chloride batteries in the second battery box are connected in a three-series and two-parallel configuration between the four contacts of the relay to form a circuit and are connected to the servo controller in the elastic retraction device. Each servo controller controls one high-speed servo, and the servo controller is connected to the locking contact. The servo controller detects the static angle of the servo and controls the movement of the servo. The control logic is as follows: when the servo controller is powered on and it detects that the servo state is at the locked angle, it immediately unlocks and stops the servo from rotating after unlocking; when the servo controller is powered on and it detects that the servo state is at the unlocked angle and the locking contact is closed, it immediately locks and stops the servo from rotating after locking. Life limit: A counter and a buzzer are built into the servo controller. When the number of lockings exceeds 50 times, the buzzer sounds continuously and the servo locking action is not executed.

[0011] Further, there are two elastic retraction devices, and a fixed connecting rod is provided between the retraction rods of the two elastic retraction devices.

[0012] Further, both ends of the magnetic blocker are fixedly connected to the connecting rod. The magnetic blocker is a rectangular neodymium magnet, and the outside of the magnetic blocker is integrally coated with a 0.5-mm-thick PTFE layer. The braking rod is made of aluminum alloy, and a magnetic blocking block is provided on the braking rod. The surface of the magnetic blocking block is integrally coated with a 0.5-mm-thick PTFE layer. The magnetic blocking block and the braking rod are fixed by bolts. The adjacent surfaces of the magnetic blocker and the magnetic blocking block on the braking rod have the same polarity. The magnetic blocker and the magnetic blocking block on the braking rod are made of neodymium magnets with a central magnetic field strength greater than 4000 gauss.

[0013] Furthermore, a sealing ring is provided in the through hole, and a sealing plate is provided outside the through hole.

[0014] Furthermore, a magnetic control signal input is provided in the first battery box, and the reed switch is arranged in the magnetic control signal input. The first battery box is cast with epoxy resin to fix the reed switch. The reed switch is used to receive an external braking magnetic force control signal input. The reed switch is a normally open switch, which closes after receiving the control signal, and links the internal mechanism to release the brake lever.

[0015] Furthermore, the explosion-proof box is a hollow rectangle, the battery box is welded to the explosion-proof box, an outer edge plate extending outward is provided on the top of the explosion-proof box, a sealing cover is provided on the outer edge plate, the outer edge plate and the sealing cover are connected by bolts, and a fixing plate for fixing the elastic retraction device is provided inside the explosion-proof box, and screw holes are provided on the fixing plate.

[0016] Furthermore, the battery box is made of steel, and a flame-retardant polyurethane foam is provided in the battery box. The flame-retardant polyurethane foam, the battery, the reed switch and the relay are completely encapsulated in the battery box.

[0017] The beneficial effects of this application are:

[0018] The present invention has a fully sealed design and a built-in battery. The mechanism executes actions through a unique external magnetic signal control interface and is not affected or interfered with by any external factors. It is waterproof and explosion-proof, consumes zero power when in standby mode, has a long service life, and requires no maintenance during the cycle. The special design of the release mechanism makes it easy to retract and release the brake rod, and the structure is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of this application;

[0020] Figure 2 A schematic diagram of the release mechanism structure for this application;

[0021] Figure 3 This is a schematic diagram of the explosion-proof box structure for this application;

[0022] Figure 4 This is a schematic diagram of the mechanical assembly structure of this application;

[0023] Figure 5 For this application, a state diagram is used;

[0024] Figure 6 This is a schematic diagram of the structure of the elastic retraction device of this application;

[0025] Figure 7 The circuit structure diagram of the reed switch and relay for this application;

[0026] Figure 8 This is the circuit structure diagram of the relay and elastic retraction device of this application;

[0027] Figure 9 This is the schematic diagram of epoxy resin casting for the reed switch of this application;

[0028] Figure 10 This is the schematic diagram of the connection between the servo controller and the high-speed servo of this application.

[0029] In the figure: explosion-proof box 1, elastic retraction device 2, retractable rod 3, connecting rod 4, magnetic blocker 5, through hole 6, linear bearing 7, reed switch 8, four-contact relay 9, first battery box 10, second battery box 11, fixed connecting rod 12, magnetic stopper 13, aluminum alloy brake rod 14, fixing plate 15, sealing plate 16, magnetic control signal input point 17, outer edge plate 18, sealing cover 19, spring 20, locking block 21, rotation limit block 22, servo shaft 23, high-speed servo 24, mounting bracket 25, epoxy resin 26, locking contact 27, servo controller 28. Detailed implementation method

[0030] The present application will be further described below in conjunction with the accompanying drawings and detailed implementation methods.

[0031] A braking rod control device for a safety production braking mine car, including an explosion-proof box 1, a release mechanism is provided inside the explosion-proof box, and a control device is provided outside the explosion-proof box 1. It is characterized in that the release mechanism includes an elastic retraction device 2 arranged inside the explosion-proof box, a retractable rod 3 that can slide inside the elastic retraction device is arranged inside the elastic retraction device 2, a connecting rod 4 is arranged at the outer end of the retractable rod 3, and a magnetic blocker 5 for controlling the magnetic stopper 13 is arranged at one end of the connecting rod 4 that is not connected to the retractable rod 3. A through hole 6 is provided on one side of the explosion-proof box, a linear bearing 7 is arranged inside the through hole 6, and the connecting rod 4 is arranged inside the linear bearing 7 and can move back and forth inside the linear bearing 7.

[0032] Furthermore, the control device includes a battery box and a control switch. The control switch includes a reed switch 8 and a relay 9. The battery box is two and is respectively arranged on both sides of the explosion-proof box 1. The battery box includes a first battery box 10 and a second battery box 11. Batteries are arranged inside both the first battery box 10 and the second battery box 11. The reed switch and the relay are connected to form a circuit by relying on the batteries inside the first battery box and the second battery box with the elastic retraction device.

[0033] Furthermore, the battery is a lithium thionyl chloride battery, ER26500M model battery. If other sizes and models are used, the limited type must be a lithium thionyl chloride type battery. The first battery box is equipped with a total of 4 lithium thionyl chloride batteries, and the second battery box is equipped with 3 lithium thionyl chloride batteries and a relay. The relay is a four-contact relay. The 3 lithium thionyl chloride batteries in the first battery box and the 3 lithium thionyl chloride batteries in the second battery box form a circuit with three series and two parallels with the four contacts of the relay and are connected to the servo controller 28 of the elastic retraction device. Each servo controller controls a high-speed servo. There are four high-speed servos. Two high-speed servos are provided in each elastic retraction device, and the high-speed servo controller is connected to the locking contact; the servo controller detects the static angle of the servo and controls the movement of the servo. The control logic is: when the servo controller is powered on, it detects that the servo state is at the locking angle, and it is immediately unlocked, and the servo rotation is stopped after unlocking; when the servo controller is powered on, it detects that the servo state is at the unlocking angle, the locking contact is closed, and it is immediately locked, and the servo rotation is stopped after locking. Life limit: The servo controller has a built-in counter and buzzer. When the number of locking times exceeds 50 times, the buzzer will always sound and the servo locking action will not be performed.

[0034] Furthermore, there are two elastic retracting devices 2, and a fixed connecting rod 12 is provided between the retracting rods of the two elastic retracting devices.

[0035] Furthermore, both ends of the magnetic blocker 5 are fixedly connected to the connecting rod 4, the magnetic blocker is a rectangular neodymium magnet, the outside of the magnetic blocker is entirely covered with a 0.5 mm thick PTFE layer, the brake rod is made of aluminum alloy, and a magnetic block 13 is provided on the brake rod, the surface of the magnetic block 13 is entirely covered with a 0.5 mm thick PTFE layer, the magnetic block 13 is fixed to the brake rod by bolts, and the adjacent surfaces of the magnetic blocker and the brake rod magnetic block 13 have the same polarity.

[0036] Furthermore, a sealing ring is provided in the through hole 6, a sealing plate 16 is provided on the outside of the through hole, the model of the linear bearing is LMKP10UU linear bearing, one end of the LMKP10UU linear bearing extends out through the opening on the explosion-proof box and is pressed by the sealing plate 16, and a sealing ring is provided between the through hole 6 and the LMKP10UU linear bearing.

[0037] Furthermore, a magnetic control signal input location 17 is provided in the first battery box 10, and the reed switch 8 is arranged in the magnetic control signal input location 17. The first battery box is cast with epoxy resin 26 for fixing the reed switch. The reed switch is used to receive an external braking magnetic force control signal input. The reed switch is a normally open switch, which closes after receiving the control signal, and links the internal mechanism to release the brake lever.

[0038] Further, the explosion-proof box 1 is a hollow rectangle. The battery box is welded to the explosion-proof box. An outer edge plate 18 extending outward is provided above the explosion-proof box. A sealing cover 19 is provided on the outer edge plate 18. A sealing gasket is provided between the sealing plate and the explosion-proof box. The outer edge plate 18 and the sealing cover 19 are connected by bolts. A fixing plate 15 for fixing the elastic retraction device 2 is provided inside the explosion-proof box, and screw holes are provided on the fixing plate 15.

[0039] Further, the battery box is made of steel material. Flame-retardant polyurethane foam is provided inside the battery box. The flame-retardant polyurethane foam, the battery, the magnetic reed switch and the relay are completely encapsulated inside the battery box.

[0040] Further, the elastic retraction device includes a contraction rod 3 arranged inside the mounting frame 25. A spring 20 is provided on the contraction rod. A hole for connecting with the fixing plate 15 is provided on the mounting frame. When the magnetic blocker 5 blocks the "magnetic block 13", the internal spring is in a compressed state, and the compression elastic force of the spring is 25 - 30 N. One end of the contraction rod 3 is connected to the connecting rod 4 through a fixed connecting rod 12, and a locking block 21 is fixed at the other end. Arc-shaped grooves are provided on both sides of the locking block 21, and semi-circular rotating limit blocks 22 are arranged inside the grooves. The center point of the rotating limit block 22 is connected to the high-speed servo shaft 23. When unlocking: The high-speed servo shaft 23 rotates 180° to drive the rotating limit block to release the lock. The contraction rod 3 contracts into the mounting frame 25 under the elastic force of the spring, driving the magnetic blocker 5 to release the brake rod. When resetting, an external magnetic signal is given for 30 seconds, the servo controller is powered on, waiting for the locking contact 27 to give a signal. Pull the magnetic blocker by hand to drive the contraction rod to move outward, compress the spring. When compressed to the specified position, it touches the servo locking contact, and the high-speed servo rotates 180 degrees to complete the locking.

[0041] When the mine car is running, the magnetic blocker 5 blocks the brake rod against the magnetic block 13. When it is necessary to release the brake rod 14, an external magnetic signal is given to control the magnetic reed switch 8 to close, and then control the four-contact relay 9 to attract. The attraction of the four contacts connects the battery circuit of six batteries in three series and two parallel, causing the 180-degree rotation of the high-speed servo shafts inside the two elastic retraction devices, driving the rotating limit block to release the lock on the contraction rod. The contraction rod quickly retracts under the action of the high-elasticity spring, releasing the brake rod. The magnetic blocker 5 and the brake rod against the magnetic block 13 are of the same polarity. There is always an air gap during the blocking process, and the tripping resistance is extremely small. At the same time, it reduces the impact on the contraction rod when the brake rod bumps due to the mine car jolting. This device has a low cost and a reasonable structure. When the deployment time is greater than ten years, regardless of whether the number of uses reaches the limit, the entire product must be scrapped and replaced.

[0042] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A braking rod control device for a safety production braking mine car, including an explosion-proof box, a release mechanism is provided inside the explosion-proof box, and a control device is provided outside the explosion-proof box, characterized in that, The release mechanism comprises an elastic retracting device arranged inside the explosion-proof box, a retracting rod which can slide inside the elastic retracting device is arranged inside the elastic retracting device, a connecting rod is arranged at the outer end of the retracting rod, a magnetic blocker for controlling the brake rod is arranged at the end of the connecting rod which is not connected to the retracting rod, a through hole is arranged at one side of the explosion-proof box, a linear bearing is arranged inside the through hole, the connecting rod is arranged in the linear bearing and can move forward and backward in the linear bearing; The elastic retraction device comprises a mounting frame, a locking block is built in the mounting frame, the locking block is connected to the retracting rod, a spring is arranged on the retracting rod, a baffle is arranged in the mounting frame and arranged between the spring and the locking block, high-speed steering gears are arranged on both sides of the locking block, the high-speed steering gear is controlled by a steering gear controller, a groove is arranged on the locking block, a rotation limit block is arranged in the groove, the rotation limit block is connected to the high-speed steering gear through the steering gear shaft and moves with the high-speed steering gear, and locking contacts for limiting the high-speed steering gear are arranged on the inner side of the baffle and the outer side of the high-speed steering gear; The control device includes a battery box and a control switch, the control switch includes a reed switch and a relay, the battery box is two and is respectively arranged on both sides of the explosion-proof box, the battery box includes a first battery box and a second battery box, the first battery box and the second battery box are both provided with batteries, the first battery box is provided with a reed switch and a relay, the reed switch, the relay and the elastic retraction device rely on the batteries in the first battery box and the second battery box to connect and form a circuit; A magnetic control signal input is provided in the first battery box, and the reed switch is arranged in the magnetic control signal input. The first battery box is cast with epoxy resin to fix the reed switch. The reed switch is used to receive an external brake magnetic force control signal input. The reed switch is a normally open switch, which closes after receiving the control signal, and links the internal mechanism to release the brake lever.

2. According to claim 1, a brake rod control device for safely braking a mining car, the battery is a lithium thionyl chloride battery, 4 lithium thionyl chloride batteries are provided in the first battery box, and 3 lithium thionyl chloride batteries are provided in the second battery box. The relay is a four-contact relay, and the three lithium thionyl chloride batteries in the first battery box and the three lithium thionyl chloride batteries in the second battery box form a three-in-two-in-parallel circuit with the four contacts of the relay and are connected to the servo controller in the elastic retraction device, and each servo controller controls a high-speed servo.

3. According to the brake rod control device for safe production braking of a mining car as described in claim 1, there are two elastic retraction devices, and a fixed connecting rod is provided between the retraction rods of the two elastic retraction devices.

4. A brake rod control device for a safety production braking mine car according to claim 1, wherein both ends of the magnetic blocker are fixedly connected to the connecting rod. The magnetic blocker is a rectangular neodymium magnet, and the outside of the magnetic blocker is integrally coated with a 0.5-mm-thick PTFE layer. The brake rod is made of aluminum alloy, and a magnetic stopper is provided on the brake rod. The surface of the magnetic stopper is integrally coated with a 0.5-mm-thick PTFE layer. The magnetic stopper and the brake rod are fixed by bolts. The adjacent surfaces of the magnetic blocker and the magnetic stopper on the brake rod have the same polarity.

5. A brake rod control device for a safety production braking mine car according to claim 1, wherein a sealing ring is provided in the through hole, and a sealing plate is provided outside the through hole.

6. A brake rod control device for a safety production braking mine car according to claim 1, wherein the explosion-proof box is a hollow rectangle, the battery box is welded to the explosion-proof box, an outer edge plate extending outward is provided above the explosion-proof box, a sealing cover is provided on the outer edge plate, and the outer edge plate and the sealing cover are connected by bolts. A fixing plate for fixing the elastic retraction device is provided inside the explosion-proof box, and screw holes are provided on the fixing plate.

7. A brake rod control device for a safety production braking mine car according to claim 1, wherein the battery box is made of steel, and flame-retardant polyurethane foam is provided in the battery box. The flame-retardant polyurethane foam, the battery, the reed switch and the relay are completely encapsulated in the battery box.

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