阅读说明：本技术 一种地轨车多角度自适应自动挂脱钩连接装置 (Multi-angle self-adaptive automatic hooking and unhooking connecting device for ground rail vehicle ) 是由 朱会昆 康文波 高翼 廉琦 穆迪 马晓钢 黄伟 张巍 严鹏 李红岩 于 2021-08-03 设计创作，主要内容包括：一种地轨车多角度自适应自动挂脱钩连接装置,包括：推舌钩、以及设置在第一车厢端面上的舌钩安装座、设置在第二车厢端面上的牵引撞击环；在所述推舌钩上设置有敞口状的凹钩；在所述舌钩安装座端面上开设有呈“C”形的槽口；槽口的开口方向朝向所述牵引撞击环；所述推舌钩通过转轴安装在所述舌钩安装座槽口下方位置处；第二车厢与第一车厢连接时,所述牵引撞击环撞击并推动所述推舌钩绕转轴转动,使凹钩与槽口形成扣环将所述牵引撞击环扣接在其内；在所述舌钩安装座内设置有卡紧机构用于锁定旋转到位后的推舌钩。连接结构为链环连接结构,可同时满足垂直方向、水平方向转动,特别适合矿井下复杂轨车运输路径多、方位转角大等需求。(The utility model provides an automatic coupling and decoupling device of subway car multi-angle self-adaptation, includes: the push tongue hook, a tongue hook mounting seat arranged on the end surface of the first carriage and a traction impact ring arranged on the end surface of the second carriage; an open concave hook is arranged on the tongue pushing hook; the end surface of the tongue hook mounting seat is provided with a C-shaped notch; the opening direction of the notch faces the traction striking ring; the tongue pushing hook is arranged at the position below the notch of the tongue hook mounting seat through a rotating shaft; when the second carriage is connected with the first carriage, the traction impact ring impacts and pushes the tongue pushing hook to rotate around the rotating shaft, so that the concave hook and the notch form a snap ring to snap the traction impact ring in the concave hook; and a clamping mechanism is arranged in the tongue hook mounting seat and used for locking the tongue-pushing hook which rotates in place. The connecting structure is a chain ring connecting structure, can simultaneously meet the requirements of rotation in the vertical direction and the horizontal direction, and is particularly suitable for the requirements of multiple transportation paths, large azimuth angle and the like of a complicated rail car under a mine.)

1. The utility model provides an automatic unhook connecting device that hangs of subway car multi-angle self-adaptation which characterized in that includes: a tongue pushing hook (5), a tongue hook mounting seat (3) arranged on the end surface of the first carriage (100) and a traction impact ring (8) arranged on the end surface of the second carriage (200); an open concave hook (501) is arranged on the tongue pushing hook (5);

a C-shaped notch (31) is formed in the end face of the tongue hook mounting seat (3); the opening direction of the notch (31) faces the traction striking ring (8); the tongue pushing hook (5) is arranged at the position below the notch (31) of the tongue hook mounting seat (3) through a rotating shaft (9);

before the second carriage (200) is connected with the first carriage (100), the opening of a concave hook (501) on the push tongue hook (5) faces the traction impact ring (8);

when the second carriage (200) is connected with the first carriage (100), the traction impact ring (8) impacts and pushes the tongue pushing hook (5) to rotate around the rotating shaft (9), so that the concave hook (501) and the notch (31) form a snap ring to lock the traction impact ring (8) in the concave hook; a clamping mechanism is arranged in the tongue hook mounting seat (3) and used for locking the tongue pushing hook (5) which rotates in place.

2. The multi-angle self-adaptive automatic hooking and unhooking connecting device of the subway train as claimed in claim 1, wherein: the clamping mechanism comprises a spring (6) and a clamping block (4);

the upper part of the clamping block (4) is arranged on the tongue hook mounting seat (3) through a pin shaft (7), one end of the spring (6) is arranged to abut against the inner wall of the left end of the tongue hook mounting seat (3), and the other end of the spring is arranged to abut against the left side wall of the lower part of the clamping block (4);

a clamping tooth part (502) and a clamping surface (503) are arranged on the tongue pushing hook (5), and a clamping groove (504) is formed between the clamping tooth part (502) and the clamping surface (503);

when the second carriage (200) is connected with the first carriage (100), the tongue pushing hook (5) pushes the clamping block (4) to rotate and clamp into the clamping groove (504), and the spring (6) pushes the clamping block (4) to clamp into the clamping groove (504).

3. The multi-angle self-adaptive automatic hooking and unhooking connecting device of the subway train as claimed in claim 2, wherein: a clamping pin (401) is arranged at the lower end of the clamping block (4), and a clamping rotating wheel (402) is sleeved on the clamping pin (401);

when the second carriage (200) is connected with the first carriage (100), the clamping tooth part (502) on the tongue pushing hook (5) pushes the clamping rotating wheel (402) to slide relatively, and the clamping rotating wheel (402) is clamped on the clamping tooth part (502); the contact surface of the clamping tooth part (502) and the clamping rotating wheel (401) is an arc-shaped surface.

4. The multi-angle self-adaptive automatic hooking and unhooking device of the subway train as claimed in claim 3, wherein: the device also comprises an unlocking mechanism, wherein the unlocking mechanism comprises a guide wheel (1), a servo electric cylinder (11) and a steel wire rope (10);

a pull arm (402) is arranged at the lower end of the fixture block (4);

the guide wheel (1) is arranged on the end face of the first carriage (100) and located below the tongue hook mounting seat (3), and the servo electric cylinder (11) is arranged below the guide wheel (1);

the steel wire rope (10) is erected on the guide wheel (1), one end of the steel wire rope (10) is connected with the servo electric cylinder (11), and the other end of the steel wire rope is connected with the pull arm (402).

5. The multi-angle self-adaptive automatic hooking and unhooking device of the subway train as claimed in claim 4, wherein: the servo electric cylinder (11) is installed on the end face of the first carriage (100) through an electric cylinder installation upper seat (13) and an electric cylinder installation lower seat (14).

6. The multi-angle self-adaptive automatic hooking and unhooking device of the subway train as claimed in claim 4, wherein: the clamping block (4) and the pull arm (402) are of an integrated frame structure, and the clamping pin (401) is arranged in the frame; when the clamping mechanism locks the tongue pushing hook (5), the clamping tooth part (502) extends into a frame formed by the pull arm (402) and the clamping rotating wheel (402).

7. The multi-angle self-adaptive automatic hooking and unhooking device of the subway train as claimed in claim 4, wherein: the unlocking mechanism further comprises a controller (2) arranged on the first carriage (100) and a stroke sensor (15) arranged on the tongue hook mounting seat (3) and used for detecting the rotation stroke of the tongue pushing hook (5); the controller (2) is in control connection with the servo electric cylinder (11), and the stroke sensor (15) is in communication connection with the controller (2);

electromagnetic interference shielding bodies made of magnetic materials are arranged outside the controller (2), the servo electric cylinder (11) and the stroke sensor (15) respectively;

the control cable between the controller (2) and the servo electric cylinder (11) and the communication cable between the stroke sensor (15) and the controller (2) are anti-interference type mine dedicated cables.

8. The multi-angle self-adaptive automatic hooking and unhooking connecting device of the subway train as claimed in claim 2, wherein: a clamping table (32) is arranged on the tongue hook mounting seat (3); the mass center of the tongue pushing hook (5) is positioned on the right side of the rotating shaft (9); when the tongue pushing hook (5) is unlocked, the tongue pushing hook (5) automatically rotates and resets to the opening of the concave hook (501) and faces the traction impact ring (8), and the clamping tooth part (502) abuts against the clamping table (32).

9. The multi-angle self-adaptive automatic hooking and unhooking connecting device of the subway train as claimed in claim 1, wherein: the tongue hook mounting seat (3) is mounted on the end face of the first carriage (100) through a connecting plate (33), and a plurality of reinforcing rib plates (34) are arranged between the connecting plate (33) and the tongue hook mounting seat (3).

10. The multi-angle self-adaptive automatic hooking and unhooking connecting device of the subway train as claimed in claim 1, wherein: the tongue pushing hook (5) and the traction impact ring (8) are both made of 30CrMnSiA materials, and the preparation procedures comprise forging, tempering and surface hardness treatment.

Technical Field

The invention relates to the technical field of mine corollary equipment, in particular to a multi-angle self-adaptive automatic hooking and unhooking connecting device for a ground rail vehicle.

Background

With the development of the domestic intelligent mine field, mine corollary equipment with automatic and intelligent functions becomes one of the important directions of the development of the field.

At present, in the process of mine rail transportation, the connection among trains such as flat cars, mine cars, motors and the like mainly depends on the connection of a manual bolt shaft penetrating three-ring chain. In the connection process of the carriage, the connection efficiency is low, the connection reliability is low, and safety accidents are frequent.

Disclosure of Invention

The invention mainly aims to provide a multi-angle self-adaptive automatic hooking and unhooking connecting device for a ground rail vehicle, and aims to solve the technical problem.

In order to achieve the above object, the present invention provides a multi-angle adaptive automatic hitching and unhooking connection device for a subway train, comprising: the push tongue hook, a tongue hook mounting seat arranged on the end surface of the first carriage and a traction impact ring arranged on the end surface of the second carriage; an open concave hook is arranged on the tongue pushing hook;

the end surface of the tongue hook mounting seat is provided with a C-shaped notch; the opening direction of the notch faces the traction striking ring; the tongue pushing hook is arranged at the position below the notch of the tongue hook mounting seat through a rotating shaft;

before the second carriage is connected with the first carriage, the opening of the concave hook on the tongue pushing hook faces the traction impact ring;

when the second carriage is connected with the first carriage, the traction impact ring impacts and pushes the tongue pushing hook to rotate around the rotating shaft, so that the concave hook and the notch form a snap ring to snap the traction impact ring in the concave hook; and a clamping mechanism is arranged in the tongue hook mounting seat and used for locking the tongue-pushing hook which rotates in place.

Preferably, the clamping mechanism comprises a spring and a clamping block; the upper part of the clamping block is arranged on the tongue hook mounting seat through a pin shaft, one end of the spring is arranged to abut against the inner wall of the left end of the tongue hook mounting seat, and the other end of the spring abuts against the left side wall of the lower part of the clamping block; the push tongue hook is provided with a clamping tooth part and a clamping surface, and the clamping tooth part and the clamping surface form a clamping groove; when the second carriage is connected with the first carriage, the tongue pushing hook pushes the clamping block to rotate and clamp the clamping block into the clamping groove, and the spring pushes the clamping block tightly and clamps the clamping block into the clamping groove.

Preferably, a clamping pin is arranged at the lower end of the clamping block, and a clamping rotating wheel is sleeved on the clamping pin; when the second carriage is connected with the first carriage, the clamping tooth part on the tongue pushing hook pushes the clamping rotating wheel and generates relative sliding, and the clamping rotating wheel is clamped on the clamping tooth part; the contact surface of the clamping tooth part and the clamping rotating wheel is an arc-shaped surface.

Preferably, the multi-angle self-adaptive automatic hooking and unhooking connecting device for the ground rail vehicle further comprises an unlocking mechanism, wherein the unlocking mechanism comprises a guide wheel, a servo electric cylinder and a steel wire rope; a pull arm is arranged at the lower end of the clamping block; the guide wheel is arranged on the end surface of the first carriage and is positioned below the tongue hook mounting seat, and the servo electric cylinder is arranged below the guide wheel; the steel wire rope is erected on the guide wheel, one end of the steel wire rope is connected with the servo electric cylinder, and the other end of the steel wire rope is connected with the pull arm.

Preferably, the servo electric cylinder is installed on the end face of the first carriage through an electric cylinder installation upper seat and an electric cylinder installation lower seat.

Preferably, the fixture block and the pull arm are of an integrated frame structure, and the clamp pin is arranged in the frame; when the clamping mechanism locks the tongue pushing hook, the clamping tooth part extends into a square frame formed by the pull arm and the clamping rotating wheel.

Preferably, the unlocking mechanism further comprises a controller mounted on the first car and a stroke sensor arranged on the tongue hook mounting seat and used for detecting the rotation stroke of the tongue pushing hook; the controller is in control connection with the servo electric cylinder, and the stroke sensor is in communication connection with the controller; an anti-electromagnetic interference shield body made of a magnetic material is arranged outside the controller, the servo electric cylinder and the stroke sensor respectively; the control cable between the controller and the servo electric cylinder and the communication cable between the stroke sensor and the controller are anti-interference type mine special cables.

Preferably, a clamping table is arranged on the tongue hook mounting seat; the mass center of the tongue pushing hook is positioned on the right side of the rotating shaft; when the tongue pushing hook is unlocked, the tongue pushing hook automatically rotates and resets to the opening of the concave hook and faces the traction impact ring, and the tooth clamping part abuts against the clamping table.

Preferably, the tongue hook mounting seat is mounted on the first compartment end surface through a connecting plate, and a plurality of reinforcing ribs are arranged between the connecting plate and the tongue hook mounting seat.

Preferably, the tongue pushing hook and the traction impact ring are both made of 30CrMnSiA materials, and the preparation process comprises forging, tempering and surface hardness treatment.

The invention has the following beneficial effects:

(1) according to the invention, when the first carriage is connected with the second carriage, the concave hook on the tongue pushing hook and the notch on the tongue hook mounting seat form a snap ring to snap the traction impact ring in the concave hook, and the connecting structure is a chain ring connecting structure, so that the rotation in the vertical direction and the horizontal direction can be simultaneously met, and the requirements of multiple transportation paths, large azimuth angle and the like of a complicated rail car under a mine are particularly met. By adopting the chain link connection structure, the problems of short service life cycle, poor safety and the like of the connection device caused by rotation in the vertical direction and the horizontal direction under the complex mine road transportation environment are effectively solved, and the safety and the stability in the mineral transportation process are effectively ensured.

(2) Through setting up chucking mechanism, can form striking auto-lock structure after first carriage is connected with the second carriage, simultaneously through setting up release mechanism and carry out unlocking control through the controller, be applicable to complicated pit automation and expect height, unmanned operation occasion.

(3) Through the design of the structural mass center of the tongue hook, the tongue hook can be pushed to rotate automatically under the action of the moment formed by the mass center relative to the rotating shaft after being unlocked, so that the opening of the concave hook faces the opening of the concave hook, the clamping tooth part is abutted against the clamping table when the impact ring is pulled, the clamping table forms a rotary limiting effect on the tongue hook, and the tongue hook is pushed to complete automatic reset.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a front view of a second car in an unlocked position prior to being coupled to a first car in accordance with the present invention;

FIG. 2 is a front view of the second car in a self-locking position after being connected to the first car in accordance with the present invention;

FIG. 3 is a top view of the second car of the present invention in a self-locking position after being connected to the first car;

FIG. 4 is a schematic view of the tongue pushing hook according to the present invention;

FIG. 5 is a schematic structural view of the clamping block, the pull arm, the clamping pin and the clamping rotating wheel after being assembled;

FIG. 6 is a schematic view of the structure of the traction striking ring impacting the tongue pushing hook according to the present invention;

FIG. 7 is a schematic structural view of the push-tongue hook of the present invention after unlocking;

description of reference numerals: 100-a first car; 200-a second car; 1-a guide wheel; 2-a controller; 3-tongue hook mounting seat; 31-notches; 32-a chuck; 33-a connecting plate; 34-a reinforcing rib; 4-clamping blocks; 401-bayonet lock; 403-pulling arm; 5-tongue pushing hook; 501-concave hook; 502-a latch portion; 503-a snap surface; 504-card slot; 6-a spring; 7-a pin shaft; 8-traction impact ring; 9-a rotating shaft; 10-a steel wire rope; 11-a servo electric cylinder; 12-clamping the rotating wheel; 13-mounting an upper seat on the electric cylinder; 14-lower electric cylinder mounting base; 15-stroke sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1, fig. 2 and fig. 6, a multi-angle adaptive automatic hooking and unhooking device for a metro vehicle according to an embodiment of the present invention includes: a tongue pushing hook 5, a tongue hook mounting seat 3 arranged on the end surface of the first carriage 100 and a traction impact ring 8 arranged on the end surface of the second carriage 200; an open concave hook 501 is arranged on the tongue pushing hook 5; a C-shaped notch 31 is formed in the end face of the tongue hook mounting seat 3; the opening of the notch 31 is directed towards the traction striker ring 8; the tongue pushing hook 5 is arranged at the position below the notch 31 of the tongue hook mounting seat 3 through a rotating shaft 9; before the second carriage 200 is connected with the first carriage 100, the opening of the concave hook 501 on the push tongue hook 5 faces the traction striking ring 8; when the second carriage 200 is connected with the first carriage 100, the traction impact ring 8 impacts and pushes the tongue pushing hook 5 to rotate around the rotating shaft 9, so that the concave hook 501 and the notch 31 form a snap ring to lock the traction impact ring 8 therein; a clamping mechanism is arranged in the tongue hook mounting seat 3 and used for locking the tongue pushing hook 5 which rotates in place.

As shown in fig. 1, 2 and 5, the clamping mechanism includes a spring 6 and a latch 4; the upper part of the clamping block 4 is arranged on the tongue hook mounting seat 3 through a pin shaft 7, one end of the spring 6 is arranged to abut against the inner wall of the left end of the tongue hook mounting seat 3, and the other end of the spring abuts against the left side wall of the lower part of the clamping block 4; a clamping tooth part 502 and a clamping surface 503 are arranged on the tongue pushing hook 5, and a clamping groove 504 is formed between the clamping tooth part 502 and the clamping surface 503; when the second carriage 200 is connected to the first carriage 100, the tongue-pushing hook 5 pushes the latch 4 to rotate and to be latched in the latch slot 504, and the spring 6 pushes the latch 4 to be latched in the latch slot 504. Furthermore, a bayonet 401 is arranged at the lower end of the fixture block 4, and a clamping rotating wheel 402 is sleeved on the bayonet 401; when the second carriage 200 is connected with the first carriage 100, the latch part 502 on the tongue pushing hook 5 pushes the clamping rotating wheel 402 and slides relatively, and the clamping rotating wheel 402 is clamped on the latch part 502; the contact surface between the clamping tooth part 502 and the clamping rotating wheel 401 is an arc surface. The arc-shaped surfaces facilitate the relative sliding between the clamping tooth part 502 and the clamping rotating wheel 401.

In this embodiment, the multi-angle self-adaptive automatic hooking and unhooking connection device for the ground rail vehicle further comprises an unlocking mechanism, wherein the unlocking mechanism comprises a guide wheel 1, a servo electric cylinder 11 and a steel wire rope 10; a pull arm 402 is arranged at the lower end of the fixture block 4; the guide wheel 1 is arranged on the end surface of the first carriage 100 and is positioned below the tongue hook mounting seat 3, and the servo electric cylinder 11 is arranged below the guide wheel 1; the steel wire rope 10 is erected on the guide wheel 1, one end of the steel wire rope 10 is connected with the servo electric cylinder 11, and the other end of the steel wire rope 10 is connected with the pull arm 402.

The servo electric cylinder 11 is mounted on the end surface of the first carriage 100 through an electric cylinder mounting upper seat 13 and an electric cylinder mounting lower seat 14.

As shown in fig. 5, the fixture block 4 and the pull arm 402 are an integral frame structure, and the fixture pin 401 is disposed in the frame; when the locking mechanism locks the tongue pushing hook 5, the locking tooth part 502 extends into a square frame formed by the pull arm 402 and the locking rotating wheel 402.

In this embodiment, the unlocking mechanism further includes a controller 2 mounted on the first carriage 100, and a stroke sensor 15 disposed on the tongue hook mounting seat 3 for detecting a rotation stroke of the tongue pushing hook 5; the controller 2 is in control connection with the servo electric cylinder 11, and the stroke sensor 15 is in communication connection with the controller 2; select for use the professional equipment in the ore deposit to controller 2, servo electric jar 11 and stroke sensor 15, possess protection level more than IP65, controller 2, servo electric jar 11, stroke sensor 15 are provided with the electromagnetic interference resistance shielding body who utilizes magnetic material to make outward respectively, controller 2 with control cable between the servo electric jar 11 and stroke sensor 15 with communication cable between the controller 2 is the special cable in the anti-interference type ore deposit, forms electromagnetic interference resistance protection, thereby surrounds the interference source and cuts apart or weakens the spatial coupling passageway in interference field, prevents its transmission of electromagnetic capacity. The system measurement deviation, the conversion deviation and the output control deviation caused by the interference of the inner and outer boundaries of the mine are avoided.

As shown in fig. 6 and 7, in the present embodiment, a locking platform 32 is provided on the tongue hook mounting base 3; the mass center of the tongue pushing hook 5 is positioned on the right side of the rotating shaft 9; when the tongue pushing hook 5 is unlocked, the tongue pushing hook 5 automatically rotates and resets until the opening of the concave hook 501 faces the traction striking ring 8, and the clamping tooth part 502 abuts against the clamping table 32. Through the design of the structural mass center to pushing away tongue hook 5, can be so that push away tongue hook 5 after the unblock, push away tongue hook 5 rotatory by oneself under the moment effect that the barycenter forms for pivot 9, the opening orientation of concave hook 501 blocking tooth portion 502 supports and leans on card platform 32 when pulling impingement ring 8, card platform 32 forms rotatory limiting displacement to pushing away tongue hook 5, pushes away tongue hook 5 this moment and accomplishes automatic re-setting.

In the present embodiment, the tongue hook mount 3 is mounted on the end surface of the first car 100 through a connecting plate 33, and a plurality of reinforcing ribs 34 are provided between the connecting plate 33 and the tongue hook mount 3. The connecting plate 33 is arranged, the connecting plate 33 can be directly connected with the end face of the first carriage 100 through screws, the tongue hook mounting base 3 can be conveniently mounted, and meanwhile, the strength of the tongue hook mounting base 3 can be effectively increased through the arrangement of the plurality of reinforcing rib plates 34.

The push tongue hook 5 and the traction impact ring 8 are both made of 30CrMnSiA materials, and the preparation procedures comprise forging, tempering and surface hardness treatment. By adopting the 30CrMnSiA material and the forging, tempering and surface hardness treatment processes thereof, the push tongue hook 5 and the traction impact ring 8 have excellent strength performance, can meet the tensile load of more than 120 tons, and achieves the purpose that a small structure bears large load.

The clamping principle of the clamping mechanism is as follows: when the second carriage 200 is connected to the first carriage 100, the traction striking ring 8 strikes and pushes the tongue pushing hook 5 to rotate around the rotating shaft 9, meanwhile, the tooth clamping portion 502 of the tongue pushing hook 5 pushes the clamping rotating wheel 402 to slide relatively, the clamping rotating wheel 402 is clamped on the tooth clamping portion 502, at this time, the clamping block 4 is integrally clamped in the clamping groove 504, and the spring 6 pushes the clamping block 4 to be clamped in the clamping groove 504, so that the locking of the tongue pushing hook 5 is completed.

The control process of the unlocking mechanism comprises the following steps: when the second carriage 200 needs to be separated from the first carriage 100, the controller 2 controls the servo electric cylinder 11 to pull the steel wire rope 10, the fixture block 4 is pulled out from the clamping groove 504, the extrusion spring 6 is in a compressed energy storage state, the push tongue hook 5 rotates forward under the action of the traction impact ring 8 rightward until the clamping tooth part 502 and the clamping rotating wheel 402 fall off, unlocking of the push tongue hook 5 is completed, meanwhile, the stroke sensor 15 detects the rotation stroke of the push tongue hook 5, transmits a stroke signal after the push tongue hook 5 is unlocked in place to the controller 5, controls the servo electric cylinder 11 to stop and reset, and then the spring 6 pushes the fixture block 4 to reset.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.