Automatic power-off device for shuttle car

Abstract

The utility model discloses an automatic power-off device for a shuttle car, which relates to the technical field of shuttle car auxiliary machinery and comprises a trigger execution rotating seat and a safety locking rotating seat, and a shuttle car fence door is rotatably mounted between the trigger execution rotating seat and the safety locking rotating seat. Fence rotating shafts are fixedly connected to the positions, corresponding to the installation positions of the trigger execution rotating base and the safety locking rotating base, of the shuttle car fence door, the fence rotating shaft at the lower end penetrates through the trigger execution rotating base and then is fixedly connected with a trigger cam, and a linkage push rod is movably connected to the middle of an inner cavity of the trigger execution rotating base. A contact roller is rotatably mounted on the side, facing the fence rotating shaft, of the linkage push rod, the contact roller abuts against the outer wall of the trigger cam, and a trigger conductive sliding block is fixedly connected to the end, away from the contact roller, of the linkage push rod. An active safety control system conforming to a special working environment of a coal mine is constructed, and reliable technical support is provided for intelligent mine construction.

Description

Technical Field

[0001] This utility model relates to the field of shuttle car auxiliary machinery technology, specifically to an automatic power-off device for a shuttle car. Background Technology

[0002] A shuttle car (or simply shuttle car) is a widely used transport and storage device for muck removal and ore loading in tunnels, shafts, mining operations, water diversion tunnels, guide tunnels, oil pipelines, natural gas pipelines, tunnel excavation, and mining construction. It belongs to the category of storage and transportation equipment. Generally, a mining shuttle car mainly consists of a trough-shaped carriage of a transport vehicle and a running gear, moving forward on tracks under the traction of a traction locomotive.

[0003] With the gradual promotion of continuous mining and tunneling techniques, new safety issues have emerged. In the mining environment, during the production process of the tunneling team, the shuttle car travels back and forth along the coal mine tunnel. Especially during double-lane tunneling, the shuttle car may need to turn along with the tunnel. Because existing mining facilities cannot remotely control the shuttle car, significant safety hazards exist. For example, when operators enter the working face, the shuttle car may be in operation, potentially causing injury. In recent years, accidents resulting from the inability to control shuttle car operation in a timely manner have been frequent in mining areas.

[0004] In existing continuous mining and tunneling processes, the use of shuttle cars is managed passively. Typically, when it is known that operators need to enter the underground working face, a shuttle car operator is assigned to directly control the shuttle car's operation to ensure operator safety. However, even this passive, human-controlled management method has certain safety hazards. Therefore, we propose an automatic power-off device for the shuttle car. Utility Model Content

[0005] The purpose of this invention is to provide an automatic power-off device for shuttle cars, which is intended to address the problem that when operators enter the work area, the shuttle car may be in operation, potentially causing physical harm to the operators.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] An automatic power-off device for a shuttle car includes a trigger execution rotary seat and a safety locking rotary seat. A shuttle car gate is rotatably installed between the trigger execution rotary seat and the safety locking rotary seat. A gate shaft is fixedly connected to the upper and lower parts of the shuttle car gate corresponding to the installation positions of the trigger execution rotary seat and the safety locking rotary seat. The lower end of the gate shaft passes through the trigger execution rotary seat and is fixedly connected to a trigger cam. A linkage push rod is movably connected to the middle of the inner cavity of the trigger execution rotary seat. A contact roller is rotatably installed on the side of the linkage push rod facing the gate shaft. The contact roller abuts against the outer wall of the trigger cam. A trigger conductive slider is fixedly connected to the end of the linkage push rod away from the contact roller. A trigger sleeve is fixedly connected to the bottom of the trigger conductive slider, corresponding to the trigger conductive slider. The trigger sleeve is sleeved on the outer wall of the trigger conductive slider, and three pairs of conductive contacts are fixedly connected to the inner wall of the trigger sleeve. The three pairs of conductive contacts are electrically connected to the shuttle car drive power controller. A safety locking mechanism is provided inside the safety locking rotary seat.

[0008] Furthermore, a reset coil spring is sleeved on the outer wall of both the upper and lower fence pivots, and the inward end of the reset coil spring is fixedly connected to the shuttle fence gate, while the outward end of the two reset coil springs is fixedly connected to the trigger execution rotary seat and the safety locking rotary seat on the corresponding side.

[0009] Furthermore, two stabilizing sleeves are movably sleeved in the middle of the linkage push rod. The two stabilizing sleeves are fixedly connected to the bottom of the triggering actuator, and a push rod limiting ring is fixedly connected to the side wall between the outer wall of the linkage push rod and the stabilizing sleeve. A push rod compression spring is provided between the push rod limiting ring and the stabilizing sleeve.

[0010] Furthermore, the safety locking mechanism includes a locking ratchet. The upper fence shaft passes through the safety locking rotating seat and is keyed to a section of the inner cavity of the safety locking rotating seat. A pawl pressure rod is slidably connected to the bottom of the inner wall of the safety locking rotating seat corresponding to the outer side of the locking ratchet. A locking pawl is fixedly connected to the pawl pressure rod facing the locking ratchet. The locking pawl engages with the ratchet teeth on the outer wall of the locking ratchet.

[0011] Furthermore, an operating slider is fixedly connected to the end of the pawl lever away from the locking pawl, and a guide rail is fixedly connected to the bottom of the safety locking rotary seat corresponding to the operating slider. The operating slider is movably connected within the guide rail, and a pawl return spring is provided between the side of the operating slider away from the pawl lever and the bottom of the guide rail.

[0012] Furthermore, an unlocking lever is fixedly connected to the upper center of the operating slider, and a horizontal guide groove is provided on the upper end of the safety locking rotary seat corresponding to the unlocking lever. The upper lever of the operating slider is slidably connected through the horizontal guide groove.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model features a trigger-execution rotary seat. The trigger cam inside the rotary seat rotates with the rotation of the gate shaft when the shuttle car gate rotates. Through the contact roller, the contact roller's contact with the trigger cam pushes the linkage push rod to move left and right. When the shuttle car gate flips open, the top of the trigger cam pushes the linkage push rod outward to its outermost end. During the process of the linkage push rod being pushed, the trigger conductive slider can sequentially contact multiple pairs of conductive contacts, thereby energizing the multiple pairs of conductive contacts sequentially and sending an electrical signal to the shuttle car drive power controller, which then de-energizes the shuttle car drive power controller. Through a three-dimensional protection system with mechanical trigger multi-level power-off response, an active safety control system suitable for the special working environment of coal mines is constructed, providing reliable technical support for the construction of intelligent mines.

[0015] 2. This utility model uses a reset coil spring and a double torsion spring to drive the shuttle car gate to reset. After the safety locking mechanism is unlocked, the shuttle car gate is driven to reset, realizing the automatic closing of the gate and enhancing the practicality of the device.

[0016] 3. This utility model uses two stabilizing sleeves to guide the linkage push rod, ensuring its stable left and right movement. A push rod limiting ring and a push rod compression spring are also included. When the linkage push rod moves away from the trigger cam, the limiting ring compresses the spring to store energy, driving the linkage push rod to reset when the trigger cam returns, thus achieving rapid response and stable operation of the linkage push rod. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a diagram of the internal structure of the trigger execution transducer of this utility model;

[0019] Figure 3 This is a diagram of the internal structure of the safety locking rotary seat of this utility model;

[0020] Figure 4 This is a side sectional view of the position of the guide rail inside the safety locking rotary seat of this utility model.

[0021] Reference numerals in the attached diagram: 1. Trigger actuator; 2. Shuttle gate; 3. Gate pivot; 4. Safety locking actuator; 5. Return spring; 6. Trigger cam; 7. Linkage push rod; 8. Contact roller; 9. Trigger sleeve; 10. Trigger conductive slider; 11. Conductive contact; 12. Stabilizing sleeve; 13. Push rod limit ring; 14. Push rod compression spring; 15. Locking ratchet; 16. Pawl pressure rod; 17. Pawl return spring; 18. Locking pawl; 19. Operating slider; 20. Guide rail. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0023] Please see Figures 1-4 This utility model provides an automatic power-off device for a shuttle car, including a triggering actuator 1 and a safety locking actuator 4. A shuttle car gate 2 is rotatably mounted between the triggering actuator 1 and the safety locking actuator 4. A gate shaft 3 is fixedly connected to the upper and lower parts of the shuttle car gate 2, corresponding to the installation positions of the triggering actuator 1 and the safety locking actuator 4. A trigger cam 6 is fixedly connected to the lower end of the gate shaft 3 after passing through the triggering actuator 1. A linkage push rod 7 is movably connected to the middle of the inner cavity of the triggering actuator 1. The linkage push rod 7 faces the gate shaft 3. A contact roller 8 is mounted on the side, and the contact roller 8 abuts against the outer wall of the trigger cam 6. A trigger conductive slider 10 is fixedly connected to the end of the linkage push rod 7 away from the contact roller 8. A trigger sleeve 9 is fixedly connected to the bottom of the trigger conductive slider 10. The trigger sleeve 9 is sleeved on the outer wall of the trigger conductive slider 10, and three pairs of conductive contacts 11 are fixedly connected to the inner wall of the trigger sleeve 9. The three pairs of conductive contacts 11 are electrically connected to the shuttle drive power controller. A safety locking mechanism is provided in the safety locking turntable 4.

[0024] In this embodiment, preferably, a reset coil spring 5 is sleeved on the outer wall of both the upper and lower fence pivots 3, and the inward end of the reset coil spring 5 is fixedly connected to the shuttle car fence gate 2, while the outward end of the two reset coil springs 5 ​​is fixedly connected to the trigger execution pivot 1 and the safety locking pivot 4 on the corresponding side. By using the reset coil spring 5, the shuttle car fence gate 2 is driven to reset by a double torsion spring. After the safety locking mechanism is unlocked, the shuttle car fence gate 2 can be driven to reset, thereby realizing the automatic closing of the fence gate and enhancing the practicality of the device.

[0025] In this embodiment, preferably, two stabilizing sleeves 12 are movably sleeved in the middle of the linkage push rod 7. The two stabilizing sleeves 12 are fixedly connected to the bottom of the trigger actuator rotary seat 1, and a push rod limiting ring 13 is fixedly connected to the side wall of the linkage push rod 7 corresponding to the stabilizing sleeves 12. A push rod compression spring 14 is provided between the push rod limiting ring 13 and the stabilizing sleeves 12. Through the two stabilizing sleeves 12, the linkage push rod 7 can be guided to ensure the stable left and right movement of the linkage push rod 7. Through the push rod limiting ring 13 and the push rod compression spring 14, the push rod limiting ring 13 can compress the push rod compression spring 14 to store force when the linkage push rod 7 moves away from the trigger cam 6. When the trigger cam 6 rotates back, it drives the linkage push rod 7 to reset, realizing the rapid response and stable operation of the linkage push rod 7.

[0026] In this embodiment, preferably, the safety locking mechanism includes a locking ratchet 15. The upper gate shaft 3 passes through the safety locking rotating seat 4 and is keyed to a section of the inner cavity of the safety locking rotating seat 4 to fix the locking ratchet 15. The bottom of the inner wall of the safety locking rotating seat 4 is slidably connected to the left and right side of the outer side of the locking ratchet 15 by a pawl pressure rod 16. The pawl pressure rod 16 is fixedly connected to the locking pawl 18 on the side facing the locking ratchet 15. The locking pawl 18 meshes with the ratchet teeth on the outer wall of the locking ratchet 15. Through the locking ratchet 15 and the pawl pressure rod 16, the pawl pressure rod 16 can press the locking pawl 18 and the outer wall of the locking ratchet 15 together under the action of the outer elastic module. This allows the locking pawl 18 to lock the locking ratchet 15 and restrict the rotation of the shuttle gate 2 when it is opened, ensuring the opening of the shuttle gate 2. This ensures the contact between the trigger conductive slider 10 and multiple pairs of conductive contacts 11, thereby ensuring the continuous power-off protection state of the shuttle.

[0027] In this embodiment, preferably, an operating slider 19 is fixedly connected to the end of the pawl lever 16 away from the locking pawl 18. A guide rail 20 is fixedly connected to the bottom of the safety locking rotary seat 4 corresponding to the operating slider 19. The operating slider 19 is movably connected within the guide rail 20, and a pawl return spring 17 is provided between the side of the operating slider 19 away from the pawl lever 16 and the bottom of the guide rail 20. Through the operating slider 19, the sliding of the operating slider 19 within the guide rail 20 restricts the left and right guidance of the pawl lever 16. Through the pawl return spring 17, the preload of the pawl return spring 17 provides pressure for the pawl lever 16 to press against the locking ratchet 15, ensuring a stable fit between the locking pawl 18 and the locking ratchet 15, thereby improving the stability of the safety locking mechanism.

[0028] In this embodiment, preferably, an unlocking lever is fixedly connected to the upper center of the operating slider 19, and a horizontal guide groove is provided on the upper end of the safety locking turntable 4 corresponding to the unlocking lever. The upper lever of the operating slider 19 is slidably connected through the horizontal guide groove. The unlocking lever allows for manual movement of the operating slider 19, which in turn moves the pawl lever 16 outward, causing the locking pawl 18 to be pulled out and the locking ratchet 15 to be unlocked. This facilitates the reset of the shuttle gate 2 under the reset force of the reset spring 5. The design of the unlocking lever also increases operational safety; the operator can easily unlock the device by simply moving the unlocking lever, avoiding complex operating steps and improving work efficiency. Furthermore, the horizontal guide groove provides a stable sliding path for the unlocking lever, ensuring the accuracy and reliability of the operation.

[0029] The working principle and usage process of this utility model are as follows: When in use, the device utilizes a trigger-operated rotating seat 1 and a safety-locking rotating seat 4. These components allow the shuttle car gate 2 to be rotatably mounted, making it an openable gate on the outer fence of the shuttle car. A simple lock can be installed on the side of the shuttle car gate 2 away from the trigger-operated rotating seat 1 and the safety-locking rotating seat 4, facilitating the unlocking of the shuttle car gate 2's opening and closing mechanism. The trigger cam 6 within the trigger-operated rotating seat 1 rotates along with the fence shaft 3 as the shuttle car gate 2 rotates. The contact roller 8, in contact with the trigger cam 6, pushes the linkage push rod 7 to move left and right. When the shuttle car gate... After door 2 is flipped open, the top of trigger cam 6 pushes the linkage push rod 7 outward to the outermost end. During the process of the linkage push rod 7 being pushed, the trigger conductive slider 10 can contact multiple pairs of conductive contacts 11 in sequence, thereby energizing multiple pairs of conductive contacts 11 in sequence and sending an electrical signal to the shuttle car drive power controller, driving the shuttle car drive power controller to de-energize. Level 1 de-energization: cuts off the traction motor contactor (response time < 50ms), Level 2 de-energization: activates the hydraulic brake (braking torque ≥ 2000 N·m of guide rail), Level 3 de-energization: starts the emergency power supply to maintain braking (lasting ≥ 5min). Through the three-dimensional protection system of mechanical trigger multi-level power-off response, an active safety control system that conforms to the special working environment of coal mines is constructed, providing reliable technical support for the construction of intelligent mines.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic power-off device for a shuttle car, characterized in that: The device includes a triggering actuator (1) and a safety locking actuator (4). A shuttle gate (2) is rotatably mounted between the triggering actuator (1) and the safety locking actuator (4). A gate shaft (3) is fixedly connected to the upper and lower positions of the shuttle gate (2) corresponding to the installation positions of the triggering actuator (1) and the safety locking actuator (4). The lower end of the gate shaft (3) passes through the triggering actuator (1) and is fixedly connected to a trigger cam (6). A linkage push rod (7) is movably connected to the middle of the inner cavity of the triggering actuator (1). A contact roller is rotatably mounted on the side of the linkage push rod (7) facing the gate shaft (3). (8) The contact roller (8) abuts against the outer wall of the trigger cam (6), and the end of the linkage push rod (7) away from the contact roller (8) is fixedly connected to the trigger conductive slider (10). The bottom of the trigger conductive slider (10) is fixedly connected to the trigger sleeve (9). The trigger sleeve (9) is sleeved on the outer wall of the trigger conductive slider (10), and the inner wall of the trigger sleeve (9) is fixedly connected to three pairs of conductive contacts (11). The three pairs of conductive contacts (11) are electrically connected to the shuttle drive power controller. The safety locking turntable (4) is provided with a safety locking mechanism.

2. The automatic power-off device for a shuttle car according to claim 1, characterized in that: Both upper and lower fence pivots (3) are fitted with reset coil springs (5) on their outer walls. The inner end of the reset coil spring (5) is fixedly connected to the shuttle fence gate (2), and the outer end of the upper and lower reset coil springs (5) is fixedly connected to the trigger execution turntable (1) and the safety locking turntable (4) on the corresponding side.

3. The automatic power-off device for a shuttle car according to claim 1, characterized in that: Two stabilizing sleeves (12) are movably sleeved in the middle of the linkage push rod (7). The two stabilizing sleeves (12) are fixedly connected to the bottom of the trigger execution rotary seat (1). A push rod limiting ring (13) is fixedly connected between the outer wall of the linkage push rod (7) and the side wall between the stabilizing sleeves (12). A push rod compression spring (14) is provided between the push rod limiting ring (13) and the stabilizing sleeves (12).

4. The automatic power-off device for a shuttle car according to claim 1, characterized in that: The safety locking mechanism includes a locking ratchet (15). The upper fence pivot (3) passes through the safety locking pivot (4) and is fixedly connected to the locking ratchet (15) in the inner cavity of the safety locking pivot (4) by a key. The bottom of the inner wall of the safety locking pivot (4) is slidably connected to the pawl pressure rod (16) on the left and right sides corresponding to the outer side of the locking ratchet (15). The pawl pressure rod (16) is fixedly connected to the locking pawl (18) on the side facing the locking ratchet (15). The locking pawl (18) meshes with the ratchet teeth on the outer wall of the locking ratchet (15).

5. The automatic power-off device for a shuttle car according to claim 4, characterized in that: The end of the pawl lever (16) away from the locking pawl (18) is fixedly connected to an operating slider (19). The bottom of the safety locking rotary seat (4) is fixedly connected to a guide rail (20) corresponding to the operating slider (19). The operating slider (19) is movably connected within the guide rail (20), and a pawl return spring (17) is provided between the side of the operating slider (19) away from the pawl lever (16) and the bottom of the guide rail (20).

6. The automatic power-off device for a shuttle car according to claim 5, characterized in that: The upper center of the operating slider (19) is fixedly connected to an unlocking lever, and the upper end of the safety locking turntable (4) is provided with a horizontal guide groove corresponding to the unlocking lever. The upper lever of the operating slider (19) is slidably connected in the horizontal guide groove.

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