A trailer towing hook device with integrated winch function and trailer towing and self-rescue method

Abstract

The present invention discloses a trailer towing hook device with integrated winch function, including an electric winch installed at the rear of a car, the electric winch is equipped with a tie rope, a winch horn hook, a winch D-type shackle and a trailer towing ring, a tail crossbeam is fixedly arranged on the outer side of the electric winch, an electric winch guide is fixedly arranged on the middle part of the inner side of the tail crossbeam, a towing hook base is fixedly arranged on the middle part of the outer side of the tail crossbeam, a detachable first direction guide pin and a second direction guide pin are arranged on the towing hook base, and the towing hook base is a double-layer structure, each layer is provided with a first direction guide pin hole position, a second direction guide pin hole position, and a main towing pin hole position. The present invention also discloses a corresponding trailer towing and self-rescue method. The present invention utilizes the function of the winch to realize the automatic hanging of the trailer on the front vehicle, reduces the difficulty of manual operation, solves the problem of the arrangement of the rear electric winch, and realizes the automatic hanging of the trailer; the function of the electric winch can be maximized to realize towing and self-rescue.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile towing hooks, and more specifically, relates to an automatic trailer towing hook device with integrated winch function and a trailer towing and self-rescue method. Background Art

[0002] The common trailer and tow vehicle are connected by a towing hook. The towing hook of an ordinary full trailer is to weld a baffle on the towing rod, divide the towing rod into two parts, and install two springs on the two parts of the towing rod. It can play a buffering role when the full trailer starts and brakes, but this kind of towing hook structure not only needs to install two springs, which increases the cost and installation difficulty, but also increases the size of the structure and the space occupied by the vehicle.

[0003] In the prior art, the electric winch is generally arranged at the front end of the vehicle, and the trailer towing hook is arranged at the rear end of the vehicle. This arrangement has the following disadvantages: (1) Since the engine cooling system is generally arranged at the front end of the vehicle, the electric winch can generally only be arranged to protrude outward, which will increase the length of the vehicle; (2) The electric winch can only be used for self-rescue or mutual rescue, and cannot be used for other functions; (3) Due to layout requirements, when the electric winch needs to be arranged at the rear, it is difficult to arrange the electric winch and the towing hook, and the electric winch is difficult to install; (4) The functions of the winch and the towing hook are independent of each other, which will sacrifice the performance of the winch to a certain extent; (5) Affected by the trailer hook, the winch needs to avoid the direction of the rope output; (6) It cannot adapt to all working conditions, and cannot realize automatic trailer hanging. Summary of the invention

[0004] In view of the above defects or improvement needs of the prior art, in order to overcome the above shortcomings of the prior art, the present invention provides an automatic trailer towing hook with integrated winch function, which is intended to solve the layout problems that exist when a trailer towing hook and a rear electric winch are arranged on a car, especially an off-road vehicle, at the same time.

[0005] In order to achieve the above-mentioned object, according to one aspect of the present invention, there is provided a trailer towing hook device with an integrated winch function, comprising an electric winch installed at the rear of a vehicle, wherein the electric winch is equipped with a tie rope, a winch clevis hook, a winch D-type shackle and a trailer towing ring;

[0006] A tail beam is fixedly arranged on the outer side of the electric winch, an electric winch guide is fixedly arranged on the inner middle part of the tail beam, and a traction hook base is fixedly arranged on the outer middle part;

[0007] The traction hook base is provided with a detachable first direction guide pin and a second direction guide pin; the traction hook base is a double-layer structure, each layer is provided with a first direction guide pin hole, a second direction guide pin hole and a main traction pin hole, and a traction base limit plate is also provided between the upper and lower layers, and the traction base limit plates have two pieces, which are arranged on the left and right sides respectively, from the inside to the outside, in an eight-shaped arrangement; a tie rope hole for pulling out the tie rope is also provided in the middle of the upper layer of the traction hook base;

[0008] A main traction pin is inserted into the main traction pin hole, the bottom end of the main traction pin is an inclined surface, a sloped positioning groove is provided on the side, and a main traction pin positioning mechanism that can be elastically inserted into the positioning groove is provided on the outer side of the positioning groove.

[0009] Furthermore, a winch fixing beam is provided on the outer periphery of the electric winch, and the electric winch is fixedly installed inside the winch fixing beam.

[0010] Furthermore, the electric winch guide is at least two rollers arranged vertically, and the gap between the rollers can allow the electric winch rope and the mooring rope to pass through.

[0011] Furthermore, the fastening rope is connected by binding with a chain buckle.

[0012] Furthermore, a horizontal reinforcing plate is provided between the upper and lower layers of the traction hook base, and there are two horizontal reinforcing plates, which are respectively arranged on the lower end surface of the upper layer of the traction hook base and the upper end surface of the lower layer of the traction hook base.

[0013] Furthermore, a main traction pin limit pin hole is provided at the lower end of the main traction pin, and the main traction pin limit pin hole and the main traction pin limit pin cooperate with each other.

[0014] According to another aspect of the present invention, a trailer towing method of a trailer towing hook device with integrated winch function is provided.

[0015] The method comprises the following steps: setting the trailer towing hook to a towing state, placing the winch clevis hook in a disassembled state and placing it in a vehicle tool box, pulling the winch D-shaped shackle fastened to the winch steel rope of the electric winch out of the guide to approach the trailer towing ring, fastening the winch D-shaped shackle and the trailer towing ring by a fastening rope, and clamping the main towing pin by a main towing pin positioning mechanism;

[0016] When the trailer is close to the towing hook base, the end of the tie rope is passed through the upper hole of the base, and the winch is continued to be used to tighten it. At the same time, one hand continues to synchronously pull the end of the tie rope out from the tie rope hole on the upper part of the base; at this time, the main towing pin is located in a limited position and is limited by the main towing pin positioning mechanism. When the trailer towing eye is pulled in by the winch, it will hit the main towing pin. The lower part of the main towing pin is provided with an inclined surface. The collision of the trailer towing eye with the main towing pin inclined surface will cause the main towing pin to rise, and the winch continues to pull the trailer towing eye in. The main towing pin When it rises to a certain level, the main traction pin positioning mechanism retreats under the action of the inclined surface and the positioning groove. As the trailer traction eye continues to move, the main traction pin falls into the middle of the trailer traction eye under the action of gravity to achieve automatic hanging. After the main traction pin falls into the trailer traction eye, pull out the end of the tie rope, and the tie rope automatically disengages from the trailer traction eye; after the main traction pin is in place, insert the main traction pin limit pin; remove the tie rope from the winch D-type shackle and store it in the tool box; realize the trailer hanging function by one person.

[0017] According to another aspect of the present invention, a self-rescue method for a trailer towing hook device with an integrated winch function is provided, comprising the following steps: when using the self-rescue function, it is first necessary to detach the trailer, and insert the first direction guide pin and the second direction guide pin arranged on the base into the first direction guide pin hole and the second direction guide pin hole respectively, and the second direction guide pin and the first direction guide pin both have compression springs at the insertion position of the base to prevent the four guide pins from falling off; pull the capstan D-type shackle out of the guide, connect the capstan horn hook with the capstan D-type shackle, and fix the other side of the capstan horn hook to realize the capstan self-rescue and mutual rescue functions.

[0018] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0019] 1. The trailer towing hook device of the present invention adopts a towing hook base with a unique structural design, and utilizes the function of the winch to realize automatic hooking of the trailer onto the front vehicle, thereby reducing the difficulty of manual operation and solving the problem of rear electric winch layout.

[0020] 2. The trailer towing hook device of the present invention can maximize the function of the electric winch and realize towing and self-rescue through the coordinated use of the winch clevis hook, the winch D-type shackle and the quick-detachable fastening rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an axonometric view of a preferred embodiment of the present invention when hung onto a trailer (initial position);

[0022] Figure 2 This is a cross-sectional view of a preferred embodiment of the present invention being hung on a trailer (initial position);

[0023] Figure 3This is a schematic diagram of the main traction pin structure of a preferred embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of a traction hook base in a preferred embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the top view of the towing hook base of a preferred embodiment of the present invention;

[0026] Figure 6 yes Figure 5 BB cross-sectional structure diagram;

[0027] Figure 7 This is a schematic diagram of the traction state of a preferred embodiment of the present invention;

[0028] Figure 8 This is a cross-sectional view of a preferred embodiment of the present invention in a traction state;

[0029] Fig. 9 A schematic diagram of self-rescue and mutual rescue using a winch in a preferred embodiment of the present invention (the winch D-type shackle is pulled out from the winch guide);

[0030] Fig.10 Schematic diagram of self-rescue and mutual rescue using a winch in a preferred embodiment of the present invention (the winch clevis hook is connected to the winch D-type shackle).

[0031] In the present invention, the same figure mark represents the same element name, wherein: 1-electric winch, 2-winch guide, 3-traction hook base, 31-first direction guide pin hole, 32-second direction guide pin hole, 33-main traction pin hole, 34-traction base limit plate, 35-horizontal reinforcement plate, 36-fastening rope hole, 4-first direction guide pin, 5-second direction guide pin, 6-main traction pin, 61-positioning groove, 62-main traction pin limit pin hole, 7-main traction pin limit pin, 8-tail beam, 9-winch fixed beam, 10-fastening rope, 11-main traction pin positioning mechanism, 12-winch horn hook, 13-winch D-type shackle, 14-trailer traction ring, 15-butterfly nut, 16-tail beam, 17-main traction pin inclined surface, 18-tensioning retaining spring, 19-winch rope. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] Embodiment 1:

[0034] Please refer to Figure 1 to Figure 3 As shown, an embodiment of the present invention provides a trailer towing hook device with an integrated winch function, including an electric winch 1 installed at the rear of a car, the electric winch 1 is equipped with a tie rope 10 (for example, a nylon rope or other flexible rope), a winch horn hook 12, a winch D-type shackle 13 and a trailer towing ring 14, a tail crossbeam 8 of a grooved steel structure is fixedly arranged on the outer side of the electric winch 1, an electric winch guide 2 is fixedly arranged in the middle of the inner side of the tail crossbeam 8, the electric winch guide 2 is two or more rollers arranged vertically, which play a flexible guiding role, and the gap between the rollers can be used for the electric winch steel rope and the tie rope 10 to pass through, a metal towing hook base 3 is fixedly arranged in the middle of the outer side of the tail crossbeam 8, and the towing hook base 3 is provided with a detachable first direction guide pin 4 and a second direction guide pin 5, the traction hook base 3 is a double-layer plate structure, each layer is provided with a first direction guide pin hole 31, a second direction guide pin hole 32, and a main traction pin hole 33; a tie rope hole 36 for pulling out a tie rope is also provided in the middle of the upper layer of the traction hook base (3); a cylindrical main traction pin 6 is inserted into the main traction pin hole 33, the lower end of the main traction pin 6 is an inclined surface, and a slope-shaped positioning groove 61 is provided on the side of the main traction pin 6, and a main traction pin positioning mechanism that can be elastically inserted into the positioning groove is provided on the outer side of the positioning groove 61, and the main traction pin positioning mechanism 11 can adopt a variety of structural forms, such as a pin that can slide left and right under the action of an external force.

[0035] Embodiment 2:

[0036] The difference from the first embodiment is that, in order to better protect the electric winch 1 from external damage, a winch fixing beam 9 is provided on the outer periphery of the electric winch 1 , and the electric winch 1 is fixedly installed inside the winch fixing beam 9 .

[0037] Embodiment 3:

[0038] Please refer to Figures 4 to 6 The difference from Example 1 is that a traction base limiting plate 34 is further provided between the upper and lower layers of the traction hook base 3. There are two traction base limiting plates 34, which are arranged on the left and right sides respectively, from the inside to the outside, in an eight-shaped arrangement. When the trailer is electrically pulled into a specific position, even if the trailer is not aligned with the front vehicle, automatic alignment can be achieved under the guidance of the traction base limiting plates 34.

[0039] A horizontal reinforcing plate 35 for reinforcing strength is provided between the upper and lower layers of the traction hook base 3. There are two horizontal reinforcing plates 35, which are arranged on the lower end surface of the upper layer of the traction hook base 3 and the upper end surface of the lower layer of the traction hook base 3 respectively.

[0040] A main traction pin limit pin hole 62 is provided at the lower end of the main traction pin 6 , and the main traction pin limit pin hole 62 matches with the main traction pin limit pin 7 .

[0041] In order to prevent the first direction guide pin 4 and the second direction guide pin 5 from slipping and improve reliability, a compression spring 18 (a spring is also called a retaining ring or a buckling ring, which is a type of fastener installed in the shaft groove or hole groove of a machine or equipment to prevent axial movement of parts on the shaft or hole) is provided in the first direction guide pin hole 31 and the second direction guide pin hole 32.

[0042] Please refer to Figure 7-Figure 8 The trailer towing method of the trailer towing hook device with integrated winch function can allow the trailer to be far away from the main vehicle when realizing the trailer hanging function, and the main vehicle does not need to reverse to the trailer, so as to prevent the danger of inaccurate reversing and hitting the trailer. Under normal conditions, when hanging a trailer, a person needs to guide at the rear of the vehicle to realize the function of hanging the trailer. This solution can realize the action of hanging the trailer by a single person. After the main vehicle is parked, the trailer is automatically pulled in by the winch function and hung on the main vehicle. The specific operation is as follows:

[0043] The trailer towing hook is set to the towing state, the winch clevis hook 12 is in the disassembled state and placed in the vehicle tool box, the winch D-type shackle 13 fastened to the winch rope 19 of the moving winch 1 is pulled out from the guide 2 to close to the trailer towing ring 14, and the winch D-type shackle 13 and the trailer towing ring 14 are fastened by the fastening rope 10 (such as nylon rope), and the fastening method is preferably a quick-release fastening method (such as a chain buckle method), which can directly untie the fastening rope by pulling out the rope head after the hooking is completed, and the towing hook base 3 is connected to the trailer towing hook, and the winch D-type shackle 13 is pulled out from the guide 2 to close to the trailer, and the winch D-type shackle 13 is connected to the trailer towing ring 14, and the main towing pin 6 is clamped by the main towing pin positioning mechanism 11;

[0044] When the trailer approaches the towing hook base, the end of the tying rope is passed through the hole on the top of the base, and the winch is continued to be used to tighten it. At the same time, one hand continues to synchronously pull the end of the tying rope out from the tying rope hole 36 on the top of the base. At this time, the main traction pin 6 is located in a limited position and is limited by the main traction pin positioning mechanism. When the trailer towing ring is pulled in by the winch, it will hit the main traction pin. The lower part of the main traction pin is provided with an inclined surface. The collision of the trailer towing ring 14 with the main traction pin inclined surface will cause the main traction pin 6 to rise. The winch continues to pull the trailer towing ring 14. The main traction pin 6 rises to a certain extent. The main traction pin positioning mechanism 11 retreats under the action of the inclined surface and the positioning groove 61. As the trailer towing ring 14 continues to move, the main traction pin 6 falls into the middle of the trailer towing ring 14 under the action of gravity to achieve automatic hanging. After the main traction pin falls into the trailer towing ring 14, the end of the tying rope 10 is pulled out to participate in Figure 3 , the tying rope is automatically disengaged from the trailer traction ring 14. After the main traction pin is in place, insert the main traction pin limit pin 7; remove the tying rope 10 from the winch D-type shackle 13 and store it in the tool box; realize the trailer hanging function by a single person.

[0045] Please refer to Figure 9-10 The self-rescue method of the trailer towing hook device with integrated winch function specifically includes: when using the self-rescue function, it is necessary to first detach the trailer, and insert the first direction guide pin 4 and the second direction guide pin 5 arranged on the base into the first direction guide pin hole 31 and the second direction guide pin hole 32 respectively, and the second direction guide pin and the first direction guide pin both have a clamping spring 18 at the insertion position of the base to prevent the four guide pins from falling off; pull the capstan D-type shackle 13 out of the guide, connect the capstan horn hook 12 with the capstan D-type shackle 13, and fix the other side of the capstan horn hook to realize the capstan self-rescue and mutual rescue functions.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0047] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A trailer towing hook device with integrated winch function, comprising an electric winch (1) installed at the rear of a vehicle, the electric winch (1) being equipped with a tie rope (10), a winch clevis hook (12), a winch D-shaped shackle (13) and a trailer towing ring (14), characterized in that: A tail crossbeam (8) is fixedly provided on the outer side of the electric winch (1), an electric winch guide (2) is fixedly provided on the inner middle part of the tail crossbeam (8), and a towing hook base (3) is fixedly provided on the outer middle part; The traction hook base (3) is provided with a detachable first direction guide pin (4) and a second direction guide pin (5); the traction hook base (3) is a double-layer structure, each layer is provided with a first direction guide pin hole (31), a second direction guide pin hole (32) and a main traction pin hole (33), and a traction base limit plate (34) is provided between the upper and lower layers, and the traction base limit plates (34) have two pieces, which are arranged on the left and right sides respectively, and are arranged from the inside to the outside in an eight-shaped arrangement; a tie rope hole (36) for pulling out a tie rope is also provided in the middle of the upper layer of the traction hook base (3); A main traction pin (6) is inserted into the main traction pin hole (33); the bottom end of the main traction pin (6) is an inclined surface, and a sloped positioning groove (61) is provided on the side surface; a main traction pin positioning mechanism (11) that can be elastically snapped into the positioning groove is provided on the outer side of the positioning groove (61); A winch fixing crossbeam (9) is provided on the outer periphery of the electric winch (1), and the electric winch (1) is fixedly installed inside the winch fixing crossbeam (9); The electric winch guide (2) is at least two rollers arranged vertically, and the gap between the rollers can allow the electric winch rope and the tie rope (10) to pass through; a horizontal reinforcement plate (35) is also provided between the upper and lower layers of the traction hook base (3), and there are two horizontal reinforcement plates (35), which are respectively arranged on the lower end surface of the upper layer of the traction hook base (3) and the upper end surface of the lower layer of the traction hook base (3).

2. The trailer towing hook device with integrated winch function according to claim 1, characterized in that: The fastening rope (10) is connected by binding with a chain buckle.

3. The trailer towing hook device with integrated winch function according to any one of claims 1-2, characterized in that: A main traction pin limit pin hole (62) is provided at the lower end of the main traction pin (6), and the main traction pin limit pin hole (62) and the main traction pin limit pin (7) are matched.

4. A trailer towing method of a trailer towing hook device with an integrated winch function, which is applied to the trailer towing hook device according to any one of claims 1 to 2, characterized in that: The method comprises the following steps: setting the trailer towing hook to a towing state, placing the winch clevis hook (12) in a disassembled state and placing it in a vehicle tool box, pulling the winch D-shaped shackle (13) fastened to the winch steel rope (19) of the electric winch (1) out of the guide (2) until it is close to the trailer towing ring (14), fastening the winch D-shaped shackle (13) and the trailer towing ring (14) by means of a fastening rope (10), and locking the main towing pin (6) by means of a main towing pin positioning mechanism (11); When the trailer approaches the towing hook base, the end of the tying rope is passed through the hole on the upper part of the base, and the winch is continued to be used to tighten it. At the same time, one hand continues to synchronously pull the end of the tying rope out from the tying rope hole (36) on the upper part of the base; at this time, the main towing pin (6) is located at a limited position and is limited by the main towing pin positioning mechanism. When the trailer towing eye is pulled in by the winch, it will hit the main towing pin. The main towing pin is provided with an inclined surface at the bottom. When the trailer towing eye (14) hits the main towing pin inclined surface, the main towing pin (6) rises. The winch continues to pull the trailer towing eye (14). When the main towing pin (6) rises to a certain extent, the main towing pin The positioning mechanism (11) retracts under the action of the inclined surface and the positioning groove (61), and as the trailer towing ring (14) continues to move, the main towing pin (6) falls into the middle of the trailer towing ring (14) under the action of gravity to achieve automatic hanging. After the main towing pin (6) falls into the trailer towing ring (14), the end of the tie rope (10) is pulled out, and the tie rope is automatically disconnected from the trailer towing ring (14); after the main towing pin is in place, the main towing pin limit pin (7) is inserted; the tie rope (10) is removed from the winch D-type shackle (13) and stored in a tool box; and the trailer hanging function is achieved by a single person.

5. A self-rescue method for a trailer towing hook device with an integrated winch function, which is applied to the trailer towing hook device according to any one of claims 1 to 2, characterized in that: The invention comprises the following steps: when using the self-rescue function, the trailer needs to be detached first, and a first direction guide pin (4) and a second direction guide pin (5) arranged on the base are respectively inserted into the first direction guide pin hole (31) and the second direction guide pin hole (32), and the second direction guide pin and the first direction guide pin are provided with a clamping spring (18) at the insertion position of the base to prevent the four guide pins from falling off; the winch D-type shackle (13) is pulled out from the guide, the winch horn hook (12) is connected to the winch D-type shackle (13), and the other side of the winch horn hook is fixed to a point, so that the winch self-rescue and mutual rescue functions can be realized.

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