Hanging tool for trailer

Abstract

The utility model provides a hanging tool for a trailer, and belongs to the technical field of trailer equipment. Comprising a mounting base, a connecting plate and a bolt, the mounting base and the connecting plate are fixedly arranged on the adjacent side walls of two trailers respectively, the bolt comprises a first straight rod and a second straight rod which are parallel, a connecting rod is connected between the first straight rod and the second straight rod, and a mounting groove with the inner diameter larger than that of the second straight rod is formed in the bottom of the mounting base; the first straight rod and the second straight rod are vertically inserted into the mounting base in a sliding mode, the connecting rod is located at the top of the mounting base, the first straight rod vertically penetrates through the connecting plate, the second straight rod penetrates into the mounting groove, and a connecting piece used for driving the plug pin to press downwards to abut against the mounting base is arranged in the mounting groove. The connecting piece is arranged in the mounting groove, and the mounting groove is formed in the bottom of the mounting seat, so that the connecting piece is unlikely to be directly wetted by rainwater to be quickly corroded, and the effect of prolonging the service life of the hanger is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of trailer equipment, in particular to a trailer hitch. Background Art

[0002] In the logistics industry, trailers are a commonly used transportation equipment. When transporting a large amount of goods, multiple trailers are usually needed for transportation. Multiple trailers can be connected together using a hook, and then a trailer head is connected in front of a trailer at the end. By driving the trailer head, multiple trailers behind can be driven to carry out transportation operations at the same time.

[0003] The patent with announcement number CN218966602U discloses a trailer rear-hook connection mechanism, including a connection plate, a mounting seat, a fixing plate, a latch and an elastic member, one side of the connection plate is fixedly arranged on the trailer in the vertical direction, the mounting seat is fixedly arranged on the side of the connection plate away from the trailer, and the interior of the mounting seat is a hollow chamber, the fixing plate is vertically fixedly connected to one end of the connection plate away from the mounting seat, and the fixing plate is arranged parallelly and spaced on one side of the mounting seat, through holes are opened on both the mounting seat and the fixing plate, the latch is coaxially inserted into the through holes on the mounting seat and the fixing plate, the elastic member is located in the hollow chamber of the mounting seat, and the elastic member is used to push the latch to extend out of the mounting seat and simultaneously inserted into the through holes on the mounting seat and the fixing plate. When multiple trailers are needed to transport luggage, the connecting ring on the trailer is placed on the upper surface of the fixing plate, the connecting rod is inserted into the jack, and simultaneously penetrates the through hole on the mounting seat, the connecting ring on the trailer and the through hole on the fixing plate, so as to achieve a stable connection between the connecting parts of adjacent trailers.

[0004] However, when the elastic member is installed on the mounting seat, it is usually directly exposed to the air, and is easily wetted and quickly corroded when it rains, thereby reducing the service life of the entire trailer rear hook connection mechanism. Utility Model Content

[0005] In view of the above problems, the utility model provides a trailer hitch.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0007] A trailer hitch is provided, which is used to connect two adjacent trailers, and includes a mounting seat, a connecting plate and a latch. The mounting seat and the connecting plate are respectively fixed on the adjacent side walls of the two trailers. The latch includes two parallel first straight rods and a second straight rod. A connecting rod is connected between the first straight rod and the second straight rod. A mounting groove with an inner diameter larger than the second straight rod is provided at the bottom of the mounting seat. The first straight rod and the second straight rod are vertically slidably plugged into the mounting seat, and the connecting rod is located at the top of the mounting seat. The first straight rod also vertically passes through the connecting plate, and the second straight rod passes into the mounting groove. A connecting piece for driving the latch to press down and abut against the mounting seat is provided in the mounting groove.

[0008] Furthermore, the connecting member includes a spring, and the end of the second straight rod located in the mounting groove is detachably connected to a stop block whose diameter is adapted to the mounting groove. The stop block is slidably connected in the mounting groove, and the spring is sleeved on the second straight rod and located between the stop block and the bottom wall of the mounting groove. The two ends of the spring are respectively abutted against the stop block and the bottom wall of the mounting groove.

[0009] Furthermore, the stopper is threadedly connected to the second straight rod.

[0010] Furthermore, the connecting rod is bent to form an arched handle.

[0011] Furthermore, a first mounting tube having an inner diameter matching that of the first straight rod is fixedly provided on the top of the mounting seat, the first straight rod is inserted into the first mounting tube, a sliding groove is vertically opened on the top of the first mounting tube for making way for the connecting rod, and an end cap having a diameter greater than the inner diameter of the first mounting tube is fixedly provided on the end of the first straight rod away from the connecting plate, and the distance from the end cap to the connecting rod is less than the length of the sliding groove.

[0012] Furthermore, a second mounting tube is vertically fixed on the top of the mounting seat, a sealing ring is embedded in the second mounting tube, and the second straight rod is passed through the second mounting tube and is in frictional contact with the inner wall of the sealing ring.

[0013] The beneficial effects of the utility model are:

[0014] 1. The second straight rod can be pulled down by the connecting piece, so that the latch is pressed down as a whole to abut against the mounting seat, thereby preventing the latch from loosening during the transportation of the two trailers and improving the stability of the hitch during transportation;

[0015] Second, the connecting piece is arranged in the installation groove, and the installation groove is opened at the bottom of the mounting seat, so as to prevent the connecting piece from being directly wetted by rain water, thereby reducing the speed of its own corrosion and having the effect of increasing the service life of the hanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a trailer hitch according to an embodiment of the present application.

[0017] Figure 2 This is a schematic cross-sectional structure diagram of a mounting base for a trailer hitch according to an embodiment of the present application.

[0018] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A.

[0019] Among them, 1. mounting seat; 11. mounting groove; 12. first mounting tube; 13. second mounting tube; 121. slide groove; 2. connecting plate; 3. latch; 31. first straight rod; 32. second straight rod; 33. connecting rod; 331. handle; 4. spring; 41. block; 5. end cover; 6. sealing ring. DETAILED DESCRIPTION

[0020] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] The present application embodiment discloses a trailer hitch, referring to Figure 1 and Figure 2 , including a mounting seat 1, a connecting plate 2 and a latch 3, wherein the mounting seat 1 and the connecting plate 2 are respectively welded on the adjacent side walls of the two trailers. The latch 3 includes two parallel first straight rods 31 and second straight rods 32, and a connecting rod 33 is integrally fixed between the first straight rod 31 and the second straight rod 32. A mounting groove 11 having an inner diameter larger than that of the second straight rod 32 is provided at the bottom of the mounting seat 1, and two first through holes and second through holes having inner diameters respectively adapted to the first straight rod 31 and the second straight rod 32 are provided on the mounting seat 1. The first straight rod 31 and the second straight rod 32 are respectively vertically slidably inserted in the first through hole and the second through hole, and the connecting rod 33 is located above the mounting seat 1. A connecting hole having an inner diameter larger than that of the first straight rod 31 is provided on the connecting plate 2, and the first straight rod 31 also vertically passes through the connecting hole when passing through the first through hole. The second straight rod 32 passes into the mounting groove 11, and a connecting member for driving the latch 3 to press down against the mounting seat 1 is provided in the mounting groove 11.

[0022] In the embodiment of the present application, a trailer is moved so that the connection hole of the connecting plate 2 on the trailer is vertically aligned with the first through hole of the mounting seat 1 on the adjacent trailer, and the first straight rod 31 and the second straight rod 32 on the latch 3 are vertically inserted downward into the corresponding first through hole and the second through hole, so that the first straight rod 31 can be inserted into the connecting hole while passing through the first through hole, thereby realizing the connection of the two adjacent trailers. The second straight rod 32 can be pulled down by the connecting member, so that the latch 3 is pressed down as a whole to abut against the mounting seat 1, preventing the latch 3 from loosening during the transportation of the two trailers, thereby improving the stability of the hanger during transportation. In addition, the connecting member is arranged in the mounting groove 11, and the mounting groove 11 is opened at the bottom of the mounting seat 1, so as to prevent the connecting member from being directly wetted by rainwater, thereby reducing the speed of its own corrosion, and having the effect of improving the service life of the overall hanger.

[0023] Specifically, the connecting member includes a spring 4, and the end of the second straight rod 32 located in the mounting groove 11 is threadedly connected with a stopper 41 whose diameter is adapted to the mounting groove 11, and the stopper 41 is slidably connected in the mounting groove 11. The spring 4 is sleeved on the second straight rod 32 and is located between the stopper 41 and the inner bottom wall of the mounting groove 11, and the two ends of the spring 4 are respectively abutted against the stopper 41 and the inner bottom wall of the mounting groove 11.

[0024] In the embodiment of the present application, after the second straight rod 32 passes through the mounting groove 11, the spring 4 is placed into the mounting groove 11 from the bottom of the mounting seat 1, and then the second straight rod 32 is sleeved, and then the stopper 41 is threadedly connected to the end of the second straight rod 32 and tightened, so that the spring 4 can be compressed, so that the two ends of the spring 4 are respectively abutted against the stopper 41 and the inner bottom wall of the mounting groove 11, thereby achieving the purpose of driving the latch 3 to press down and abut against the mounting seat 1. When the two connected trailers need to be untied, only the latch 3 needs to be manually pulled up, and the first straight rod 31 and the second straight rod 32 on the latch 3 are lifted, so that one of the trailers can be moved to separate the connecting plate 2 from the mounting seat 1. Since the stopper 41 is slidably connected in the mounting groove 11, when the latch 3 moves up to compress the spring 4 to the maximum extent, the latch 3 can be restricted from continuing to move upward, and the latch 3 can be prevented from slipping out of the mounting seat 1. When the latch 3 is released, under the elastic force of the spring 4, the latch 3 can be abutted downward on the mounting seat 1 again, which has the advantage of convenient operation.

[0025] In addition, since the spring 4 is located in the installation groove 11 and the stopper 41 is slidably connected in the installation groove 11, the spring 4 will not be directly exposed to the air, reducing the risk of corrosion of the spring 4, thereby increasing the service life of the overall hanger.

[0026] In order to facilitate the operator to grasp the latch 3 , the connecting rod 33 is bent to form an arched handle 331 .

[0027] Reference Figure 3 A first mounting tube 12 whose inner diameter matches the first straight rod 31 is welded on the top of the mounting seat 1 above the first through hole. The first straight rod 31 is inserted into the first mounting tube 12. A slide groove 121 is vertically opened on the top of the first mounting tube 12 to make way for the connecting rod 33. An end cap 5 whose diameter is larger than the inner diameter of the first mounting tube 12 is welded on the end of the first straight rod 31 away from the connecting plate 2. The distance from the end cap 5 to the connecting rod 33 is smaller than the length of the slide groove 121.

[0028] When the spring 4 drives the pin 3 to press down the mounting seat 1, the end cover 5 abuts against the top of the first mounting tube 12. Since the distance from the end cover 5 to the connecting rod 33 is less than the length of the slide groove 121, the connecting rod 33 is located above the inner bottom wall of the slide groove 121 at this time, avoiding damage caused by the connecting parts of the connecting rod 33 and the two straight rods abutting against the edges of the first through hole and the second through hole respectively, thereby further improving the service life of the hanger.

[0029] Furthermore, a second mounting tube 13 is vertically welded above the second through hole at the top of the mounting seat 1, an annular groove is provided in the second mounting tube 13, a sealing ring 6 is embedded in the groove, and the second straight rod 32 is passed through the second mounting tube 13 and is in frictional contact with the inner wall of the sealing ring 6. The sealing ring 6 can further improve the sealing between the second straight rod 32 and the second mounting tube 13, preventing rainwater from directly flowing into the mounting groove 11 from the top of the mounting seat 1 and corroding the spring 4, thereby improving the service life of the hanger.

[0030] The implementation principle of a trailer hook in the embodiment of the present application is as follows: move a trailer so that the connection hole of the connecting plate 2 on the trailer is vertically aligned with the first through hole of the mounting seat 1 on the adjacent trailer, and vertically insert the first straight rod 31 and the second straight rod 32 on the latch 3 into the corresponding first through hole and the second through hole, so that the first straight rod 31 can be inserted into the connecting hole while passing through the first through hole, thereby realizing the connection of the two adjacent trailers. The second straight rod 32 can be pulled down by the connecting member, so that the latch 3 is pressed down as a whole to abut against the mounting seat 1, preventing the latch 3 from loosening during the transportation of the two trailers, thereby improving the stability of the hook during transportation. In addition, the connecting member is arranged in the mounting groove 11, and the mounting groove 11 is opened at the bottom of the mounting seat 1, so as to prevent the connecting member from being directly wetted by rainwater, thereby reducing the speed of its own corrosion, which has the effect of improving the service life of the hook.

[0031] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A trailer hitch for connecting two adjacent trailers, characterized in that: The invention comprises a mounting seat (1), a connecting plate (2) and a latch (3), wherein the mounting seat (1) and the connecting plate (2) are respectively fixed on adjacent side walls of two trailers, the latch (3) comprises two parallel first straight rods (31) and second straight rods (32), a connecting rod (33) is connected between the first straight rod (31) and the second straight rod (32), a mounting groove (11) having an inner diameter larger than that of the second straight rod (32) is provided at the bottom of the mounting seat (1), the first straight rod (31) and the second straight rod (32) are vertically slidably plugged into the mounting seat (1), and the connecting rod (33) is located at the top of the mounting seat (1), the first straight rod (31) also vertically passes through the connecting plate (2), and the second straight rod (32) passes into the mounting groove (11), and a connecting piece for driving the latch (3) to press down and abut against the mounting seat (1) is provided in the mounting groove (11).

2. A trailer hitch according to claim 1, characterized in that: The connecting member comprises a spring (4); the end of the second straight rod (32) located in the mounting groove (11) is detachably connected with a stopper (41) whose diameter matches the mounting groove (11); the stopper (41) is slidably connected in the mounting groove (11); the spring (4) is sleeved on the second straight rod (32) and is located between the stopper (41) and the inner bottom wall of the mounting groove (11); and the two ends of the spring (4) are respectively in contact with the stopper (41) and the inner bottom wall of the mounting groove (11).

3. A trailer hitch according to claim 2, characterized in that: The stopper (41) is threadedly connected to the second straight rod (32).

4. A trailer hitch according to claim 1, characterized in that: The connecting rod (33) is bent to form an arched handle (331).

5. A trailer hitch according to claim 4, characterized in that: A first mounting tube (12) having an inner diameter adapted to the first straight rod (31) is fixedly disposed on the top of the mounting seat (1); the first straight rod (31) is inserted into the first mounting tube (12); a slide groove (121) is vertically opened on the top of the first mounting tube (12) for making way for the connecting rod (33); an end cap (5) having a diameter greater than the inner diameter of the first mounting tube (12) is fixedly disposed on one end of the first straight rod (31) away from the connecting plate (2); and a distance from the end cap (5) to the connecting rod (33) is less than the length of the slide groove (121).

6. The trailer hitch according to claim 1, characterized in that: A second mounting tube (13) is vertically fixed on the top of the mounting seat (1), a sealing ring (6) is embedded in the second mounting tube (13), and the second straight rod (32) is inserted into the second mounting tube (13) and is in frictional contact with the inner wall of the sealing ring (6).

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