Automatic picking and hanging device for electric locomotive traction trailer group

Abstract

The invention discloses an automatic picking and hanging device for an electric locomotive traction trailer set, and belongs to the technical field of electric locomotive and trailer connecting devices. Comprising a locomotive body connecting seat, a hook body connecting seat, a balance mechanism, a hook body, a driving mechanism and a reset mechanism, the two balance mechanisms are symmetrically arranged on the two sides of the hook body connecting base, and the centering positioning mechanism is arranged in the middle of an upper plate of the vehicle body connecting base, so that the whole device can work normally. A hook cavity is formed in the end, away from the hook body connecting base, of the hook body, and a hook is arranged in the hook cavity and used for picking and hanging the trailer hooking pin. The driving mechanism is arranged in the hook body, the reset mechanism is arranged in the hook cavity, and the reset mechanism is used for driving the hook to complete the unhooking action, so that the automatic unhooking action can be realized, a driver does not need to get off the vehicle in the process, the labor intensity of the driver is greatly reduced, the unhooking efficiency is improved, and safety accidents such as collision of the driver and the vehicle are avoided. And the safety is high.

Description

Technical Field

[0001] The invention relates to the technical field of electric locomotive and trailer connection devices, in particular to an automatic unhooking and hooking device for an electric locomotive towing a trailer group. Background Art

[0002] During the production and construction of mines, mine rail locomotives are widely used for transportation operations, and usually multiple mine cars are connected in series and pulled by mine locomotives. The mine locomotives and mine cars are connected by hooks, and the traditional hook connection method uses a three-ring chain with a pin, which requires manual unhooking operations.

[0003] When the chain needs to be removed or hung, a driver is required to drive while an assistant gets out of the car to insert or remove the pin. If the two people do not cooperate well, not only will the chain removal fail, but the worker's fingers and legs may be easily injured. This is both labor-intensive and time-consuming, and the chain may easily fall off and break.

[0004] There are mainly the following problems in manual hook removal: First, manual hook removal requires the electric locomotive driver and the hook remover to cooperate repeatedly to align the hole position to complete the hook removal operation, which is labor-intensive and inefficient; second, manual hook removal is prone to misoperation such as untimely hook removal or improper hooking, causing safety accidents such as collisions between people and vehicles, and poor safety; third, the traditional hook connection device has no buffer protection function, especially when the mining electric locomotive is started, stopped, turned, and repeatedly changed slopes, the impact generated will cause the internal part of the hook connection device to wear sharply, shorten the service life, and easily lead to transportation accidents such as accidental unhooking of the hook connection device. The production conditions in the mine are harsh, so a safe, reliable, and flexible electric locomotive automatic hook removal device is extremely needed. Summary of the invention

[0005] The purpose of the present invention is to solve the problems mentioned in the above background technology and to provide an automatic unhooking device for an electric locomotive towing a trailer group.

[0006] The object of the present invention can be achieved by the following technical solution: An automatic unhooking device for an electric locomotive towing a trailer group, comprising a body connection seat fixedly mounted on the rear of the electric locomotive, the body connection seat having a mounting cavity, and further comprising:

[0007] A hook body connecting seat, one end of which is installed in the center of the installation cavity through a hanging pin, and the end of the hook body connecting seat away from the vehicle body connecting seat has a hook body limiting cavity;

[0008] A balancing mechanism, wherein two balancing mechanisms are symmetrically arranged on both sides of the hook body connecting seat, and are used to center the hook body connecting seat in the installation cavity; a centering positioning mechanism is arranged in the upper plate of the hook body connecting seat, and is used to keep the hook body connecting seat centered in the installation cavity;

[0009] A hook body, one end of which is clamped in the hook body limiting cavity, and an end of the hook body away from the hook body connecting seat is provided with a hook cavity, and a hook is provided in the hook cavity;

[0010] A driving mechanism, disposed in the hook body, for driving the hook to complete hooking and unhooking actions;

[0011] The resetting mechanism is arranged in the hook cavity and is used for driving the hook to complete the movable grabbing and resetting action before unhooking.

[0012] As a further solution of the present invention: the hook comprises a movable grip and a fixed grip which are relatively arranged, the fixed grip is fixedly arranged on the inner wall of the hook cavity, and the movable grip is rotatably arranged in the hook cavity through a rotating shaft.

[0013] As a further solution of the present invention: the movable grip has an arc-shaped clamping opening on one side relative to the fixed grip, and the arc-shaped clamping opening is used to clamp the trailer hitch pin.

[0014] As a further solution of the present invention: the reset positioning mechanism is arranged in the hook cavity; when the trailer hitch pin touches the touch rod of the reset positioning mechanism, the reset positioning mechanism is unlocked; under the action of the quick-hanging spring, the movable catch quickly completes the grabbing action on the trailer hitch pin;

[0015] A quick-hanging spring has one end fixedly connected to the inner wall of the hook cavity and the other end fixedly connected to one end of the movable catch. The quick-hanging spring is used to enable the movable catch to be in a quick grabbing state.

[0016] As a further solution of the present invention: the driving mechanism comprises:

[0017] A trigger rod is disposed between the driving machine and the movable gripper, and the driving machine can be turned on by the movable gripper touching the trigger rod;

[0018] A driving machine is arranged in the hook body, and a movable gripping positioning block is arranged at the end of the output rod of the driving machine, and the movable gripping positioning block is used to lock the movable gripping to realize the hooking;

[0019] The unlocking button is arranged in the driving cab of the electric locomotive and is connected to the driving machine for driving the driving machine to move in the reverse direction, so that the movable gripping positioning block is separated from the movable gripping block to realize unhooking.

[0020] As a further solution of the present invention: the reset mechanism comprises:

[0021] One end of the reset arm is hinged to a linkage column at one end of the movable grip through a reset connecting rod.

[0022] The reset arm is rotatably mounted on the hook body through a rotating shaft.

[0023] The end is hinged to the linkage column at one end of the movable grip through a reset connecting rod;

[0024] The reset positioning mechanism is arranged in the hook cavity. When the movable catch is fully opened, the pin shaft at one end of the reset positioning mechanism falls into the hook opening positioning hole of the movable catch to complete the reset positioning of the movable catch.

[0025] As a further solution of the present invention: a trigger rod is provided at one end of the reset positioning mechanism to collide with the trailer hitch pin; a positioning pin is provided at the other end of the reset positioning mechanism and when it is concentric with the open positioning hole set at one end of the movable catch, the reset action of the movable catch is completed.

[0026] As a further solution of the present invention: the balancing mechanism comprises:

[0027] A balancing rod passes through the corresponding side wall of the installation cavity, one end of the balancing rod is rotatably connected to the corresponding side wall of the hook body connecting seat, and the other end is slidably connected to the corresponding side wall of the vehicle body connecting seat;

[0028] A group of balancing springs are respectively sleeved on the balancing rods located on both sides of the side walls of the installation cavity.

[0029] As a further solution of the present invention: protective covers are respectively provided between the side walls of the installation cavity and the corresponding side walls of the vehicle body connecting seat.

[0030] As a further solution of the present invention: the hook body limiting cavity is filled with a buffer block, and the buffer block is tightly fitted with the end surface of the hook body.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention is provided with a driving machine, a trigger rod, a movable catch positioning block, a movable catch, a fixed catch and a reset positioning mechanism; when the trailer hitch pin touches the trigger rod of the reset positioning mechanism, the reset positioning mechanism unlocks the movable catch, and the movable catch rotates to the arc-shaped clamping opening opposite to the fixed catch under the action of the quick-hanging spring, the movable catch touches the trigger rod to start the driving machine, and the driving machine drives the movable catch positioning block to lock the movable catch, thereby realizing automatic hooking action.

[0033] 2. The present invention provides an unlocking button, a reset arm and a reset positioning mechanism; the unlocking button is arranged in the cab of the electric locomotive and is connected to the drive motor for communication. The electric locomotive driver presses the unlocking button in the cab to control the drive motor to move in the reverse direction, so that the movable catch positioning block is separated from the movable catch. At the same time, the movable catch positioning block drives the reset arm to move around the fixed axis, and the movable catch is driven by the reset connecting rod to overcome the tension of the quick-hanging spring and rotate clockwise around the rotating axis of the center of the movable catch as the axis, so that the movable catch is reset; the positioning pin at one end of the reset positioning mechanism falls into the hook opening positioning hole, completing the reset positioning action of the movable catch before unhooking; at this time, the electric locomotive moves forward, the trailer coupling pin is detached from the hook, and the movable catch is in the initial state of coupling, completing the automatic unhooking action of the trailer coupling pin.

[0034] 3. The present invention provides a balance rod, a balance spring and a centering positioning mechanism so that the hook body connected to the hook body connecting seat is always in a centering position, thereby ensuring the normal operation of the hook.

[0035] 4. The present invention fills a buffer block in the limiting cavity of the hook body, and the buffer block fits tightly with the end face of the hook body. By providing the buffer block, the problem of the traditional hook connection device having no buffer protection function is solved. In particular, when the mining electric locomotive is started and stopped, turned, and repeatedly changes slope, the impact generated will cause the hook connection pin and the inside of the device to wear sharply, shortening the service life, and easily leading to transportation accidents such as accidental unhooking of the hook connection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0037] Figure 1 It is a schematic diagram of the overall structure of the automatic hanging and removing device of the present invention;

[0038] Figure 2 yes Figure 1 The left side cross-sectional view of the overall structure of the automatic hanging and unhanging device;

[0039] Figure 3 yes Figure 1 Schematic diagram of the overall structure of the automatic hanging and removing device from above.

[0040] Figure numerals: 1. vehicle body connecting seat; 11. installation cavity; 12. centering positioning mechanism; 2. hook body connecting seat; 21. hook body limiting cavity; 22. buffer block; 3. hitch pin; 4. balancing mechanism; 41. balance bar; 42. balance spring; 5. hook body; 51. hook cavity; 6. hook; 61. movable catch; 62. fixed catch; 63. quick-hanging spring; 66. hook opening positioning hole; 7. driving mechanism; 71. driving machine; 72. movable catch positioning block; 73. trigger rod; 8. reset mechanism; 81. reset arm; 83. reset connecting rod; 84. linkage column; 85. reset positioning mechanism; 9. trailer hitch pin; 10. protective cover. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-Figure 3 As shown, an embodiment of the present invention provides an automatic hooking and unhooking device for an electric locomotive towing a trailer group, comprising a body connecting seat 1 fixedly mounted on the rear of the electric locomotive, a hook body connecting seat 2, a balancing mechanism 4, a hook body 5, a driving mechanism 7 and a resetting mechanism 8.

[0043] Specifically, if Figure 1 As shown, the vehicle body connecting seat 1 has a mounting cavity 11, one end of the hook body connecting seat 2 is mounted at the center of the mounting cavity 11 through a hanging pin 3, two balancing mechanisms 4 are symmetrically arranged on both sides of the hook body connecting seat 2, and are used to keep the hook body connecting seat 2 centered in the mounting cavity 11, and the centering positioning mechanism 12 prevents the hook body connecting seat 2 from being offset due to the movement of the locomotive, so that the entire device can work normally.

[0044] like Figure 3 As shown, the end of the hook body connecting seat 2 away from the vehicle body connecting seat 1 has a hook body limiting cavity 21, one end of the hook body 5 is clamped in the hook body limiting cavity 21, and the end of the hook body 5 away from the hook body connecting seat 2 is provided with a hook cavity 51, and a hook 6 is provided in the hook cavity 51, and the hook 6 performs the hook-off action on the trailer hook pin 9; the driving mechanism 7 is arranged in the hook body 5, and the driving mechanism 7 is used to drive the hook 6 to complete the hooking and unhooking actions; the reset mechanism 8 is arranged in the hook cavity 51, and the reset mechanism 8 is used to drive the hook 6 to complete the reset action, thereby realizing the automatic hook-off action. During this process, the driver does not need to get off the vehicle, which greatly reduces the driver's labor intensity and improves the efficiency of hook-off, and avoids safety accidents such as collision between people and vehicles, and has high safety.

[0045] The hook body limiting cavity 21 is filled with a buffer block 22, and the buffer block 22 fits tightly with the end face of the hook body 5. By providing the buffer block 22, the problem of the traditional hook connection device having no buffer protection function is solved. In particular, when the mining electric locomotive is started and stopped, turned, and repeatedly changes slope, the impact generated will cause the hook connection pin and the inside of the device to wear sharply, shortening the service life, and easily leading to transportation accidents such as accidental unhooking of the hook connection device.

[0046] like Figure 3 As shown, in one embodiment, the hook 6 includes a movable grip 61 and a fixed grip 62 that are relatively arranged. The fixed grip 62 is fixedly arranged on the inner wall of the hook cavity 51, and the movable grip 61 is rotatably arranged in the hook cavity 51 through a rotating shaft. Specifically, the movable grip 61 has an arc-shaped clamping opening on one side relative to the fixed grip 62, and the arc-shaped clamping opening is used to clamp the trailer hitch pin 9. During specific implementation, when the trailer coupling pin 9 pushes the trigger rod of the reset positioning mechanism 85, the reset positioning mechanism 85 is unlocked; when the movable catch 61 rotates to the arc-shaped clamping opening opposite to the fixed catch 62 under the action of the quick-hanging spring 63, the driving mechanism 7 is started to fix the movable catch 61 in the hook cavity 51, and the trailer coupling pin 9 can be limited to the arc-shaped clamping opening of the movable catch 61 to complete the hooking action. At this time, the trailer group and the electric locomotive are completely hooked, and the electric locomotive can tow the trailer group to move; when it is necessary to unhook, the electric locomotive driver remotely controls the start of the driving mechanism 7 in the cab to return the driving motor 71 to its original state, that is, the movable catch 61 is released, and at the same time drives the reset mechanism 8, driving the movable catch 61 to return to its initial open state, and the reset positioning mechanism is activated to lock the movable catch 61; that is, the arc-shaped clamping opening faces outside the hook cavity 51, and the trailer coupling pin 9 is free, completing the unhooking action.

[0047] Combination Figure 2 and Figure 3 As shown, in one embodiment, the driving mechanism 7 includes a driving machine 71, a trigger rod 73 and an unlocking button (not shown). Figure 2 As shown, the driving machine 71 is arranged in the hook body 5, as shown in FIG. Figure 3As shown, a movable gripping positioning block 72 is provided at the end of the output rod of the driving machine 71, and the movable gripping positioning block 72 is used to lock the movable gripping 61; a triggering rod 73 is provided between the driving machine 71 and the movable gripping 61, and when the trailer coupling pin 9 pushes the triggering rod of the reset positioning mechanism 85, the reset positioning mechanism 85 is unlocked; when the movable gripping 61 rotates to the arc-shaped clamping opening and is directly opposite to the fixed gripping 62 under the action of the quick-hanging spring 63, the movable gripping 61 touches the triggering rod 73 to start the driving machine 71, and the driving machine 71 drives the movable gripping positioning block 72 to lock The movable catch 61 is fixed to realize the hooking action; the unlocking button is arranged in the cab of the electric locomotive and is communicated with the driving motor 71. When it is necessary to unhook, the driver of the electric locomotive presses the unlocking button in the cab to control the driving motor 71 to move in the opposite direction, so that the movable catch positioning block 72 is separated from the movable catch 61, and at the same time, the reset mechanism 8 is driven to drive the movable catch 61 to restore to the initial open state, and the reset positioning mechanism is activated to lock the movable catch 61; that is, the arc-shaped clamping opening faces outside the hook cavity 51, and the trailer coupling pin 9 is free to realize unhooking.

[0048] like Figure 3 As shown, in one embodiment, the reset mechanism 8 includes a reset arm 81 and a reset link 83. The center of the reset arm 81 is rotatably mounted on the hook body 5 through a rotating shaft, and one end of the reset arm 81 is hinged to a linkage column 84 at one end of the movable catch 61 through the reset link 83; specifically, one end of the reset arm 81 is hinged to the reset link 83, and a linkage column 84 is provided between the reset link 83 and one end of the movable catch 61. During the hooking and unhooking process, when the movable catch positioning block 72 is separated from the movable catch 61, the movable catch 61 is restored to freedom. At this time, the movable catch positioning block 72 drives the movable reset arm 81 to rotate counterclockwise with the central rotation axis as the axis, and drives the movable catch 61 to rotate clockwise with the central rotation axis of the movable catch 61 as the axis through the reset link 83, so that the arc-shaped clamping opening of the movable catch 61 is rotated from facing the fixed catch 62 to facing the outside of the hook cavity 51. At this time, the positioning pin at one end of the reset positioning mechanism falls into the hook opening positioning hole 66, and the trailer coupling pin 9 can complete the hooking and unhooking action.

[0049] like Figure 3 As shown, in one embodiment, the balancing mechanism 4 includes a balancing rod 41 and a balancing spring 42. The balancing rod 41 penetrates the corresponding side wall of the installation cavity 11, one end of the balancing rod 41 is rotatably connected to the corresponding side wall of the hook body connecting seat 2, and the other end is rotatably connected to the corresponding side wall of the vehicle body connecting seat 1; the balancing spring 42 is located on the balancing rod 41 on both sides of the side wall of the installation cavity 11, and a balancing spring 42 is respectively sleeved on the balancing rod 41. By symmetrically arranging the balancing rod 41 and the balancing spring 42 on both sides of the hook body connecting seat 2, the hook body 5 connected to the hook body connecting seat 2 is always in a centered position, and the centering positioning mechanism 12 ensures the normal operation of the hook 6.

[0050] It is understandable that due to the harsh production environment of mines, protective covers 10 are respectively provided between the side walls of the installation cavity 11 and the corresponding side walls of the vehicle body connecting seat 1 to protect the device and increase the service life of the device.

[0051] Working principle of the present invention: Hooking action: When the electric locomotive retreats and is hooked to the trailer group, the trailer hooking pin 9 enters the arc-shaped clamping opening of the movable catch 61 to push the movable catch 61, triggering the trigger rod of the reset positioning mechanism 85, unlocking and triggering the reset positioning mechanism 85, so that the movable catch 61 rotates under the action of the quick-hanging spring 63. When the movable catch 61 rotates to the arc-shaped clamping opening and is directly opposite to the fixed catch 62, the movable catch 61 touches the trigger rod 73, and the trigger rod 73 sends an electrical signal to the drive mechanism 7 to activate the drive mechanism 7. The drive mechanism 7 drives the movable catch positioning block 72 to lock the movable catch 61, completing the fixation of the trailer hooking pin 9 by the movable catch 61, and under the clamping of the movable catch 61 and the fixed catch 62, the hooking of the traction locomotive and the trailer group is completed.

[0052] Unhooking action: When the electric locomotive and the trailer need to be detached, the driver in the cab of the electric locomotive presses the unlocking button to control the driving motor 71 to move in the reverse direction, so that the movable catch positioning block 72 is detached from the movable catch 61. Under the action of the reset mechanism 8, the movable catch 61 is in a fully open position, and the pin shaft at one end of the reset positioning mechanism 85 falls into the hook opening positioning hole 66. As the electric locomotive moves forward, the unhooking action is completed.

[0053] In the description of the present invention, it should be understood that terms such as "up", "down", "left", "right", "front" and "back" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, they should not be understood as limitations on the present invention.

[0054] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic unhooking device for an electric locomotive towing a trailer group, comprising a body connection seat (1) fixedly mounted on the rear of the electric locomotive, wherein the body connection seat (1) is provided with a mounting cavity (11), characterized in that: Also includes: A hook body connecting seat (2), one end of which is installed in the center of the installation cavity (11) through a hook pin (3), and a hook body limiting cavity (21) is provided at one end of the hook body connecting seat (2) away from the vehicle body connecting seat (1); Two balancing mechanisms (4), the two balancing mechanisms (4) being symmetrically arranged on both sides of the hook body connecting seat (2) and used for centering the hook body connecting seat (2) in the installation cavity (11); A centering positioning mechanism (12) is arranged in the upper plate of the hook body connecting seat (2) and is used to keep the hook body connecting seat (2) centered in the installation cavity (11); A hook body (5), one end of which is clamped in the hook body limiting cavity (21); a hook cavity (51) is provided at one end of the hook body (5) away from the hook body connecting seat (2); a hook (6) is provided in the hook cavity (51); A driving mechanism (7) is arranged in the hook body (5) and is used to drive the hook (6) to complete hooking and unhooking actions; A reset mechanism (8) is arranged in the hook cavity (51) and is used to drive the hook (6) to complete the hook removal action.

2. The automatic unhooking device for an electric locomotive towing trailer group according to claim 1 is characterized in that: The hook (6) comprises a movable grip (61) and a fixed grip (62) which are arranged opposite to each other, wherein the fixed grip (62) is fixedly arranged on the inner wall of the hook cavity (51), and the movable grip (61) is rotatably arranged in the hook cavity (51) via a rotating shaft.

3. The automatic unhooking device for an electric locomotive towing trailer group according to claim 2 is characterized in that: The movable grip (61) has an arc-shaped clamping opening on one side relative to the fixed grip (62), and the arc-shaped clamping opening is used to clamp the trailer hitch pin (9).

4. The automatic unhooking device for an electric locomotive towing trailer group according to claim 3 is characterized in that: Also includes: A reset positioning mechanism (85), wherein the reset positioning mechanism (85) is arranged in the hook cavity (51); when the trailer coupling pin (9) touches the contact rod of the reset positioning mechanism (85), the reset positioning mechanism (85) is unlocked; under the action of the quick-hanging spring (63), the movable gripper (61) quickly completes the gripping action on the trailer coupling pin (9); A quick-hanging spring (63) has one end fixedly connected to the inner wall of the hook cavity (51) and the other end fixedly connected to one end of the movable catch (61). The quick-hanging spring (63) is used to enable the movable catch (61) to be in a quick grabbing state.

5. The automatic unhooking device for an electric locomotive towing a trailer group according to claim 4, characterized in that: The driving mechanism (7) comprises: A driving machine (71) is arranged in the hook body (5), and an active gripping positioning block (72) is arranged at the end of an output rod of the driving machine (71), and the active gripping positioning block (72) is used to lock the active gripping (61) to realize hooking; A trigger rod (73) is disposed between the driving machine (71) and the movable gripper (61), and the driving machine (71) can be turned on when the movable gripper (61) touches the trigger rod (73); An unlocking button is arranged in the driving cab of the electric locomotive and is connected to the driving machine (71) for driving the driving machine (71) to move in the reverse direction so that the movable gripping positioning block (72) is separated from the movable gripping (61), and the movable gripping positioning block (72) drives the resetting mechanism (8) to realize unhooking.

6. An automatic unhooking device for an electric locomotive towing a trailer group according to any one of claim 5, characterized in that: The reset mechanism (8) comprises: A reset arm (81), the center of which is rotatably mounted on the hook body (5) via a rotating shaft, and one end of the reset arm (81) is hinged to a linkage column (84) at one end of the movable grip (61) via a reset connecting rod (83); The reset positioning mechanism (85) is arranged in the hook cavity (51). When the movable catch (61) is fully opened, the pin at one end of the reset positioning mechanism (85) falls into the hook opening positioning hole (66) of the movable catch (61), thereby completing the reset positioning of the movable catch (61).

7. The automatic unhooking device for an electric locomotive towing a trailer as claimed in claim 6, characterized in that: One end of the driving reset arm (81), one end of the reset arm (81) away from the movable grip positioning block (72) is connected to one end of the reset connecting rod (83), and one end of the reset connecting rod (83) away from the reset arm (81) is connected to one end of the movable grip (61) with a linkage column (84).

8. The automatic unhooking device for an electric locomotive towing trailer group according to claim 7, characterized in that: The balancing mechanism (4) comprises: A balancing rod (41) passes through the corresponding side wall of the installation cavity (11), one end of the balancing rod (41) is rotatably connected to the corresponding side wall of the hook body connecting seat (2), and the other end is rotatably connected to the corresponding side wall of the vehicle body connecting seat (1); A balancing spring (42) is respectively sleeved on the balancing rod (41) located on both sides of the side wall of the installation cavity (11).

9. The automatic unhooking device for an electric locomotive towing a trailer group according to claim 8, characterized in that: Protective covers (10) are also provided between the side walls of the installation cavity (11) and the corresponding side walls of the vehicle body connecting seat (1).

10. The automatic unhooking device for an electric locomotive towing a trailer group according to claim 9, characterized in that: The hook body limiting cavity (21) is filled with a buffer block (22), and the buffer block (22) is tightly fitted to the end surface of the hook body (5).

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