Tow hook connecting structure

Abstract

The utility model belongs to the technical field of tow hooks, and particularly relates to a tow hook connecting structure which comprises a bumper, an inserting groove is formed in one side of the bumper, a tow hook body is installed in the inserting groove in an inserting mode, and an extrusion plate is installed in the inserting groove and located at one end of the tow hook body in a sliding mode. A first spring fixed to the inner wall of the inserting groove is fixedly installed on one side of the extrusion plate. Limiting blocks are symmetrically and slidably mounted on the inner walls, provided with the inserting grooves, of the sliding grooves and in the sliding grooves, a plurality of limiting rods are fixedly mounted on one sides of the limiting blocks and located in the sliding grooves, one ends of the limiting rods penetrate through one sides of the sliding grooves and extend into the bumper, and second springs are arranged on the limiting rods and located in the sliding grooves in a sleeving mode; an extrusion ring is fixedly mounted on the tow hook body and located in the sliding groove; according to the tow hook, a worker can conveniently and rapidly install the tow hook body, time is saved, meanwhile, operation of the worker is facilitated, and meanwhile the worker can conveniently and rapidly detach the tow hook body.

Description

Technical Field

[0001] The utility model belongs to the technical field of trailer hooks, and in particular relates to a trailer hook connection structure. Background Art

[0002] A trailer hook is a device installed on a vehicle for towing other vehicles or being towed. It is usually fixed at the front or rear of the vehicle and is used when the vehicle needs to tow or haul other vehicles. Trailer hooks have different specifications and models to suit vehicles of different types and sizes.

[0003] For example, a Chinese patent with publication number CN219427866U discloses a trailer hook and a trailer hook connection structure, wherein the trailer hook includes: a trailer hook, a main beam and a mounting plate; wherein the trailer hook and the mounting plate are arranged on opposite sides of the main beam, and a side of the mounting plate away from the trailer hook is protrudingly provided with a reinforcement member for connecting to the rear outer panel, so that the trailer hook is connected to the rear longitudinal beam of the vehicle through the reinforcement member, and the weight of the vehicle is not increased while meeting the requirement of higher towing strength, thereby taking into account both the weight reduction of the vehicle and the pulling strength of the trailer hook. At the same time, the rear longitudinal beam of the vehicle and the reinforcement member are fixedly connected by bolts passing through the matching nut and the first bolt through hole, so as to facilitate the replacement of the rear anti-collision beam and the trailer hook.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when used, such as: the trailer hook of this device is fixed with a number of bolts during installation, and when installing and removing the trailer hook, personnel need to use tools such as wrenches to remove the bolts, which is troublesome and cannot respond to emergencies in time. In view of this, we propose a trailer hook connection structure. Utility Model Content

[0006] The purpose of the utility model is to provide a trailer hook connection structure to solve the problems raised in the above background technology.

[0007] In view of this, the utility model provides a trailer hook connection structure, comprising:

[0008] A bumper, wherein a plug-in slot is provided on one side of the bumper, a trailer hook body is plugged and installed in the plug-in slot, an extrusion plate is slidably installed in the plug-in slot and at one end of the trailer hook body, and a spring 1 fixed to the inner wall of the plug-in slot is fixedly installed on one side of the extrusion plate;

[0009] A sliding groove, the sliding groove is provided with an inner wall of a plug-in groove, a limit block is symmetrically slidably installed in the sliding groove, a plurality of limit rods are fixedly installed on one side of the limit block and located in the sliding groove, one end of the limit rod passes through one side of the sliding groove and extends into the bumper, a spring 2 is sleeved on the limit rod and located in the sliding groove, and an extrusion ring is fixedly installed on the trailer hook body and located in the sliding groove;

[0010] A driving assembly is located in the bumper and is used to drive the two limit blocks to move away from each other.

[0011] When the tow hook body is completely inserted into the plug-in slot, under the action of the rebound force of the plurality of springs, the plurality of springs will respectively squeeze the two limit blocks, so that the two limit blocks are close to each other, until one side of the two limit blocks abuts against one side of the squeeze ring. At this time, the two limit blocks can limit the squeeze ring and the tow hook body. At the same time, under the action of the limiting position of the plurality of limit rods, the two limit blocks can be guaranteed to operate normally, so that it is convenient for personnel to quickly install the tow hook body, saving time and facilitating personnel operation.

[0012] Through the set driving assembly, the driving assembly will drive the two limit blocks to move away from each other, and at the same time the limit blocks will squeeze the plurality of springs 2 to shrink. When one side of the two limit blocks is away from the extrusion ring, the two limit blocks can release the limit on the extrusion ring and the trailer hook body. At this time, under the action of the rebound force of the spring 1, the spring 1 will squeeze the extrusion plate to move outward, and the outward movement of the extrusion plate will squeeze the trailer hook body to move outward, so that the trailer hook body can automatically pop out of the plug-in slot, ensuring that it is convenient for personnel to quickly disassemble the trailer hook body.

[0013] In the above technical solution, further, the driving component includes:

[0014] A movable groove, the movable groove is opened in the bumper and is located at the top of the sliding groove, a pressing rod is slidably installed in the movable groove, extrusion blocks are fixedly installed on both sides of the pressing rod and located in the movable groove, a rectangular rod is fixedly installed on the top of the limit block and located in the movable groove, one end of the pressing rod passes through one side of the movable groove and extends to the outside, and the other end of the pressing rod is fixedly installed with a spring three fixed to the inner wall of the movable groove.

[0015] In the present technical solution, when it is necessary to remove the trailer hook body from the bumper, the personnel only need to press the pressing rod inwardly to make the pressing rod move in the moving groove, and at the same time, the pressing rod will squeeze the spring three to shrink. The movement of the pressing rod will also drive the two squeezing blocks to move. The movement of the two squeezing blocks will respectively squeeze the two rectangular rods, so that the two rectangular rods move away from each other. The two rectangular rods moving away from each other will drive the two limit blocks to move away from each other. At the same time, the limit blocks will squeeze several springs two to shrink. When one side of the two limit blocks is away from the extrusion ring, the two limit blocks can release the limit on the extrusion ring and the trailer hook body. At this time, under the action of the rebound force of the spring one, the spring one will squeeze the extrusion plate to move outward, and the outward movement of the extrusion plate will squeeze the trailer hook body to move outward, so that the trailer hook body can automatically pop out from the plug-in slot, ensuring that it is convenient for personnel to quickly disassemble the trailer hook body.

[0016] In the above technical solution, further, the extrusion block is slidably connected to the movable groove, and the rectangular rod is slidably connected to the movable groove.

[0017] In this technical solution, it is ensured that the extrusion block can slide normally in the moving groove, and it is ensured that the rectangular rod can slide normally in the moving groove.

[0018] In the above technical solution, further, one side of the extrusion block is in an inclined structure, and one side of the extrusion block is in contact with the rectangular rod.

[0019] In the technical solution, the movement of the extrusion block is ensured to be able to move by extruding the rectangular rod.

[0020] In the above technical solution, further, the limit rod is slidably connected to the bumper, the two ends of the second spring are tightly welded to the limit block and the inner wall of the sliding groove respectively, and the extrusion ring is located on one side of the two limit blocks.

[0021] In this technical solution, it is ensured that the limit rod can slide normally in the bumper, the structural stability of the second spring is ensured, and the structural stability of the extrusion ring is ensured.

[0022] In the above technical solution, further, the inner side of the limit block is an inclined structure, and the circumferential side of the extrusion ring is an inclined structure.

[0023] In the technical solution, it is ensured that the extrusion ring can move to squeeze the two limit blocks, so that the two limit blocks move away from each other.

[0024] In the above technical solution, further, the trailer hook body and the extrusion ring are an integrally formed structure, and the rectangular rod and the limit block are an integrally formed structure.

[0025] In this technical solution, the structural stability of the trailer hook body and the extrusion ring is ensured, and the structural stability of the rectangular rod and the limit block is ensured.

[0026] The beneficial effects of the utility model are:

[0027] 1. The trailer hook connection structure inserts one end of the trailer hook body into the plug-in slot through the provided extrusion plate, and at the same time, one end of the trailer hook body will squeeze the extrusion plate, so that the extrusion plate moves inward in the plug-in slot, and at the same time, the inward movement of the extrusion plate will squeeze the spring 1 to shrink, and at the same time, the extrusion ring on the trailer hook body will also move in the plug-in slot, and the movement of the extrusion ring will squeeze the two limit blocks, so that the two limit blocks are away from each other in the sliding slot, and the movement of the limit block will drive the plurality of limit rods to move, and at the same time, the limit block will also squeeze the plurality of springs 2 to shrink. When the trailer hook body completely enters the plug-in slot, under the action of the rebound force of the plurality of springs 2, the plurality of springs 2 will respectively squeeze the two limit blocks, so that the two limit blocks are close to each other, until one side of the two limit blocks abuts against one side of the extrusion ring, at this time, the two limit blocks can limit the extrusion ring and the trailer hook body, and at the same time, under the action of the limiting of the plurality of limit rods, the two limit blocks can be guaranteed to operate normally, ensuring that it is convenient for personnel to quickly install the trailer hook body, saving time and facilitating personnel operation.

[0028] 2. The trailer hook connection structure, through the set driving assembly, the driving assembly will drive the two limit blocks to move away from each other, and at the same time the limit blocks will squeeze the plurality of springs 2 to shrink, when one side of the two limit blocks is away from the extrusion ring, the two limit blocks can release the limit on the extrusion ring and the trailer hook body, at this time under the action of the rebound force of the spring 1, the spring 1 will squeeze the extrusion plate to move outward, the outward movement of the extrusion plate will squeeze the trailer hook body to move outward, so that the trailer hook body can automatically pop out of the plug-in slot, ensuring that it is convenient for personnel to quickly disassemble the trailer hook body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 It is a schematic diagram of the detailed internal structure of the bumper in the utility model;

[0031] Figure 3 It is a structural schematic diagram of the explosion of the trailer hook body in the utility model;

[0032] Figure 4 It is a schematic diagram of the cross-sectional structure of the bumper in the utility model;

[0033] Figure 5 It is a schematic diagram of the regional structure of the movable slot in the utility model;

[0034] Figure 6 It is a schematic diagram of the regional structure of the pressing rod in the utility model.

[0035] The symbols in the figure are:

[0036] 1. Bumper; 2. Plug-in slot; 3. Trailer hook body; 4. Extrusion plate; 5. Spring 1; 6. Sliding slot; 7. Limit block; 8. Limit rod; 9. Spring 2; 10. Rectangular rod; 11. Moving slot; 12. Press rod; 13. Extrusion block; 14. Spring 3; 15. Extrusion ring. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0038] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0040] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0041] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0042] Embodiment 1:

[0043] See also Figure 1 - Figure 6 As shown, this embodiment provides a trailer hook connection structure, including:

[0044] A bumper 1, a plug-in slot 2 is provided on one side of the bumper 1, a trailer hook body 3 is plugged and installed in the plug-in slot 2, an extrusion plate 4 is slidably installed in the plug-in slot 2 and at one end of the trailer hook body 3, and a spring 5 fixed to the inner wall of the plug-in slot 2 is fixedly installed on one side of the extrusion plate 4;

[0045] A sliding groove 6 is provided on the inner wall of the sliding groove 6 with the plug-in groove 2, a limit block 7 is symmetrically slidably installed in the sliding groove 6, a plurality of limit rods 8 are fixedly installed on one side of the limit block 7 and located in the sliding groove 6, one end of the limit rod 8 passes through one side of the sliding groove 6 and extends into the bumper 1, a spring 2 9 is sleeved on the limit rod 8 and located in the sliding groove 6, and an extrusion ring 15 is fixedly installed on the trailer hook body 3 and located in the sliding groove 6;

[0046] A driving assembly is located in the bumper 1 and is used to drive the two limit blocks 7 to move away from each other.

[0047] Among them, through the provided extrusion plate 4, one end of the trailer hook body 3 is inserted into the plug-in slot 2, and at the same time, one end of the trailer hook body 3 will squeeze the extrusion plate 4, so that the extrusion plate 4 moves inward in the plug-in slot 2, and at the same time, the inward movement of the extrusion plate 4 will squeeze the spring 15 to shrink, and at the same time, the extrusion ring 15 on the trailer hook body 3 will also move in the plug-in slot 2, and the movement of the extrusion ring 15 will squeeze the two limit blocks 7, so that the two limit blocks 7 are away from each other in the sliding slot 6, and the movement of the limit block 7 will drive the plurality of limit rods 8 to move, and at the same time, the limit block 7 will also squeeze the plurality of springs 29 When the trailer hook body 3 is completely inserted into the insertion slot 2, under the action of the rebound force of the plurality of springs 29, the plurality of springs 29 will squeeze the two limit blocks 7 respectively, so that the two limit blocks 7 are close to each other, until one side of the two limit blocks 7 abuts against one side of the extrusion ring 15. At this time, the two limit blocks 7 can limit the extrusion ring 15 and the trailer hook body 3. At the same time, under the action of the limiting position of the plurality of limit rods 8, the two limit blocks 7 can be guaranteed to operate normally, ensuring that the trailer hook body 3 can be quickly installed by personnel, saving time and facilitating personnel operation.

[0048] Through the set driving assembly, the driving assembly will drive the two limit blocks 7 to move away from each other, and at the same time the limit blocks 7 will squeeze the plurality of springs 29 to shrink. When one side of the two limit blocks 7 is away from the extrusion ring 15, the two limit blocks 7 can release the limit on the extrusion ring 15 and the trailer hook body 3. At this time, under the action of the rebound force of the spring 15, the spring 15 will squeeze the extrusion plate 4 to move outward, and the outward movement of the extrusion plate 4 will squeeze the trailer hook body 3 to move outward, so that the trailer hook body 3 can automatically pop out from the plug-in slot 2, ensuring that it is convenient for personnel to quickly disassemble the trailer hook body 3.

[0049] Embodiment 2:

[0050] This embodiment provides a trailer hook connection structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the drive assembly includes:

[0051] A movable groove 11 is provided in the bumper 1 and is located at the top of the sliding groove 6. A pressing rod 12 is slidably installed in the movable groove 11. Extrusion blocks 13 are fixedly installed on both sides of the pressing rod 12 and are located in the movable groove 11. A rectangular rod 10 is fixedly installed on the top of the limit block 7 and is located in the movable groove 11. One end of the pressing rod 12 passes through one side of the movable groove 11 and extends to the outside. The other end of the pressing rod 12 is fixedly installed with a spring three 14 fixed to the inner wall of the movable groove 11.

[0052] When the tow hook body 3 needs to be removed from the bumper 1, the personnel only needs to press the pressing rod 12 inwardly, so that the pressing rod 12 moves in the moving groove 11, and the pressing rod 12 will squeeze the spring three 14 to shrink. The movement of the pressing rod 12 will also drive the two squeezing blocks 13 to move. The movement of the two squeezing blocks 13 will squeeze the two rectangular rods 10 respectively, so that the two rectangular rods 10 move away from each other. The two rectangular rods 10 move away from each other will drive the two limit blocks 7 to move away from each other. At the same time, the limit blocks 7 will squeeze a number of springs 29 to shrink. When one side of the two limit blocks 7 moves away from the squeezing ring 15, the two limit blocks 7 can release the limit on the squeezing ring 15 and the tow hook body 3. At this time, under the action of the rebound force of the spring 15, the spring 15 will squeeze the squeezing plate 4 to move outward, and the outward movement of the squeezing plate 4 will squeeze the tow hook body 3 to move outward, so that the tow hook body 3 can automatically pop out from the plug-in slot 2, ensuring that it is convenient for personnel to quickly disassemble the tow hook body 3.

[0053] Embodiment 3:

[0054] This embodiment provides a trailer hook connection structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the extrusion block 13 is slidably connected to the movable groove 11, and the rectangular rod 10 is slidably connected to the movable groove 11.

[0055] Here, it is ensured that the extrusion block 13 can slide normally in the moving groove 11 , and it is ensured that the rectangular rod 10 can slide normally in the moving groove 11 .

[0056] Embodiment 4:

[0057] This embodiment provides a trailer hook connection structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features: one side of the extrusion block 13 is in an inclined structure, and one side of the extrusion block 13 is in contact with the rectangular rod 10.

[0058] Herein, it is ensured that the extrusion block 13 moves so as to squeeze the rectangular rod 10 to move.

[0059] Embodiment 5:

[0060] The present embodiment provides a trailer hook connection structure, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: the limit rod 8 is slidably connected to the bumper 1, the two ends of the spring 9 are tightly welded to the limit block 7 and the inner wall of the sliding groove 6, and the extrusion ring 15 is located on one side of the two limit blocks 7.

[0061] Among them, it is ensured that the limiting rod 8 can slide normally in the bumper 1, the structural stability of the spring 2 9 is ensured, and the structural stability of the extrusion ring 15 is ensured.

[0062] Embodiment 6:

[0063] This embodiment provides a trailer hook connection structure, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: the inner side of the limit block 7 is an inclined structure, and the peripheral side of the extrusion ring 15 is an inclined structure.

[0064] The movement of the extrusion ring 15 is ensured to squeeze the two limit blocks 7 so that the two limit blocks 7 are moved away from each other.

[0065] Embodiment 7:

[0066] This embodiment provides a trailer hook connection structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the trailer hook body 3 and the extrusion ring 15 are an integrally formed structure, and the rectangular rod 10 and the limit block 7 are an integrally formed structure.

[0067] The structural stability of the trailer hook body 3 and the extrusion ring 15 is ensured, and the structural stability of the rectangular rod 10 and the limiting block 7 is ensured.

[0068] It is worth noting that when the spring 1 5 is naturally extended, the extrusion plate 4 will not contact the two limit blocks 7, thereby ensuring the structural stability of the extrusion plate 4.

[0069] Working principle: When installing this device, the personnel can first insert one end of the trailer hook body 3 into the plug-in slot 2, and at the same time, one end of the trailer hook body 3 will squeeze the squeezing plate 4, so that the squeezing plate 4 moves inward in the plug-in slot 2, and at the same time, the squeezing plate 4 moves inward to squeeze the spring 5 to shrink, and at the same time, the squeezing ring 15 on the trailer hook body 3 will also move in the plug-in slot 2, and the movement of the squeezing ring 15 will squeeze the two limit blocks 7, so that the two limit blocks 7 are away from each other in the sliding slot 6, and the movement of the limit blocks 7 will drive a number of limit rods 8 to move, and at the same time, the limit blocks 7 will squeeze a number of springs The spring 29 contracts, and when the trailer hook body 3 is completely inserted into the insertion groove 2, under the action of the rebound force of the plurality of springs 29, the plurality of springs 29 will squeeze the two limit blocks 7 respectively, so that the two limit blocks 7 are close to each other, until one side of the two limit blocks 7 abuts against one side of the extrusion ring 15. At this time, the two limit blocks 7 can limit the extrusion ring 15 and the trailer hook body 3. At the same time, under the action of the limiting rods 8, the two limit blocks 7 can be guaranteed to operate normally, ensuring that the trailer hook body 3 can be quickly installed by personnel, saving time and facilitating personnel operation.

[0070] When it is necessary to remove the trailer hook body 3 from the bumper 1, the personnel only needs to press the pressing rod 12 inwardly, so that the pressing rod 12 moves in the moving groove 11, and the pressing rod 12 will squeeze the spring three 14 to shrink. The movement of the pressing rod 12 will also drive the two squeezing blocks 13 to move. The movement of the two squeezing blocks 13 will squeeze the two rectangular rods 10 respectively, so that the two rectangular rods 10 move away from each other. The two rectangular rods 10 move away from each other, which will drive the two limit blocks 7 to move away from each other. At the same time, the limit blocks 7 will squeeze a number of springs 2 9 to shrink. When one side of the two limit blocks 7 moves away from the squeezing ring 15, the two limit blocks 7 can release the limit on the squeezing ring 15 and the trailer hook body 3. At this time, under the action of the rebound force of the spring 1 5, the spring 1 5 will squeeze the squeezing plate 4 to move outward, and the outward movement of the squeezing plate 4 will squeeze the trailer hook body 3 to move outward, so that the trailer hook body 3 can automatically pop out from the plug-in slot 2, ensuring that it is convenient for personnel to quickly disassemble the trailer hook body 3.

[0071] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A trailer hook connection structure, characterized in that: include: A bumper (1), wherein a plug-in slot (2) is provided on one side of the bumper (1), a trailer hook body (3) is plugged and installed in the plug-in slot (2), an extrusion plate (4) is slidably installed in the plug-in slot (2) and located at one end of the trailer hook body (3), and a spring (5) fixed to the inner wall of the plug-in slot (2) is fixedly installed on one side of the extrusion plate (4); A sliding groove (6), the sliding groove (6) is provided with an inner wall of the plug-in groove (2), a limit block (7) is symmetrically slidably installed in the sliding groove (6), a plurality of limit rods (8) are fixedly installed on one side of the limit block (7) and located in the sliding groove (6), one end of the limit rod (8) passes through one side of the sliding groove (6) and extends into the bumper (1), a spring 2 (9) is sleeved on the limit rod (8) and located in the sliding groove (6), and an extrusion ring (15) is fixedly installed on the trailer hook body (3) and located in the sliding groove (6); A driving assembly is located in the bumper (1) and is used to drive the two limit blocks (7) to move away from each other.

2. A trailer hook connection structure according to claim 1, characterized in that: The drive assembly comprises: A movable groove (11), the movable groove (11) is opened in the bumper (1) and is located at the top of the sliding groove (6), a pressing rod (12) is slidably installed in the movable groove (11), extrusion blocks (13) are fixedly installed on both sides of the pressing rod (12) and located in the movable groove (11), a rectangular rod (10) is fixedly installed on the top of the limit block (7) and located in the movable groove (11), one end of the pressing rod (12) passes through one side of the movable groove (11) and extends to the outside, and the other end of the pressing rod (12) is fixedly installed with a spring three (14) fixed to the inner wall of the movable groove (11).

3. A trailer hook connection structure according to claim 2, characterized in that: The extrusion block (13) is slidably connected to the movable groove (11), and the rectangular rod (10) is slidably connected to the movable groove (11).

4. A trailer hook connection structure according to claim 2, characterized in that: One side of the extrusion block (13) is in an inclined structure, and one side of the extrusion block (13) is in contact with the rectangular rod (10).

5. The trailer hook connection structure according to claim 1, characterized in that: The limit rod (8) is slidably connected to the bumper (1), the two ends of the second spring (9) are tightly welded to the limit block (7) and the inner wall of the sliding groove (6), and the extrusion ring (15) is located on one side of the two limit blocks (7).

6. The trailer hook connection structure according to claim 1, characterized in that: The inner side of the limit block (7) is in an inclined structure, and the circumferential side of the extrusion ring (15) is in an inclined structure.

7. The trailer hook connection structure according to claim 2, characterized in that: The trailer hook body (3) and the extrusion ring (15) are an integrally formed structure, and the rectangular rod (10) and the limit block (7) are an integrally formed structure.

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