Towing device for a semitrailer

Abstract

The utility model provides a kind of traction device for semitrailer, belong to semitrailer technical field, it solves the storage capacity of oil storage box limited, to cause in the process of using possibly need frequent replenishment butter technical problem.A kind of traction device for semitrailer, including main part, the wear plate is fixedly connected with the top of main part, multiple oil outlets are set in the top of wear plate, main part one side is fixedly connected with oiling storehouse, oiling storehouse inside is equipped with for enabling multiple oil outlets enabling mechanism, two conveying pipes other end are fixedly connected with same oil storage, second piston pad is slidably connected in oil storage, the surface of second piston pad side away from oiling storehouse is set for moving second piston pad moving mechanism, oil storage top is provided with feed inlet, four fixed ears are fixedly connected with the bottom of oil storage, and four fixed ears are evenly set in square.In the utility model, by the setting of oil storage, frequent butter can be avoided in the process of using.

Description

Technical Field

[0001] This utility model belongs to the field of semi-trailer technology, and relates to traction devices, particularly a traction device for semi-trailers. Background Technology

[0002] A search revealed a Chinese patent with authorization number CN217864413U, which discloses a traction device for new energy semi-trailers. The device includes a traction device body and a connecting plate. A wear-resistant disc is welded to the top of the traction device body. An oil reservoir and a hydraulic cylinder are installed on the top of the traction device body. The connecting plate is installed below the hydraulic cylinder, and a compression push rod, a buffer spring, an oil push plate, and a rubber pad are installed below the connecting plate. An oil drain hole is provided on the right side of the oil reservoir. A collection box is installed on the outside of the traction device body, and fixing bolts are installed on both sides of the collection box. The hydraulic cylinder pushes the connecting plate, which in turn drives the compression push rod, the oil push plate, and the rubber pad to push the grease inside the oil reservoir. The lubricating grease inside the oil reservoir enters the grease channel through the oil drain hole and then reaches the upper surface of the wear-resistant disc through the oil outlet hole. This replenishes the lubricating grease above the wear-resistant disc, achieving the purpose of conveniently and quickly replenishing the lubricating grease at the connection between the traction device and the trailer.

[0003] The aforementioned patent describes a traction device for new energy semi-trailers, which has the following shortcomings: the lubricating grease is placed in an oil reservoir, and then pushed by a pusher plate and a rubber pad. The lubricating grease inside the reservoir enters the grease channel through the drain hole and reaches the upper surface of the wear-resistant disc through the outlet hole, thus replenishing the lubricating grease above the wear-resistant disc. This allows for convenient and quick replenishment of lubricating grease at the connection between the traction device and the trailer. However, the oil reservoir has limited storage capacity, which may lead to frequent grease replenishment during use. Therefore, this problem needs to be solved. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a traction device for semi-trailers. The technical problem this invention aims to solve is that the oil storage capacity of the oil reservoir is limited, which may lead to the need for frequent grease replenishment during use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A traction device for a semi-trailer includes a main body, a wear-resistant disc fixedly connected to the top of the main body, and multiple oil outlet holes on the top of the wear-resistant disc. An upper oil tank is fixedly connected to one side of the main body, and an activation mechanism for activating the multiple oil outlet holes is provided inside the upper oil tank. One-way valves are fixedly connected to both ends of the upper oil tank, and conveying pipes are fixedly connected to the other ends of the two one-way valves. The other ends of the two conveying pipes are fixedly connected to the same oil storage tank. A second piston pad is slidably connected inside the oil storage tank. A moving mechanism for moving the second piston pad is provided on the surface of the second piston pad away from the upper oil tank. A feed inlet is provided at the top of the oil storage tank, and four fixing ears are fixedly connected to the bottom of the oil storage tank. The four fixing ears are evenly arranged in a square shape. By designing the oil storage tank, the need for frequent grease application during use can be avoided.

[0007] As a further embodiment of this utility model, the activation mechanism includes multiple guide grooves, all of which are formed inside the wear-resistant disc. Multiple guide pipes are fixedly connected to the surface of the oil outlet near the upper oil tank, and the other ends of the multiple guide pipes are fixedly connected to the upper oil tank. The upper oil tank, guide pipes, guide grooves, and oil outlet are arranged in cooperation with each other. Two hydraulic rods are fixedly connected to the surface of the upper oil tank away from the wear-resistant disc. The output ends of the two hydraulic rods are fixedly connected to the same first piston plate. A first piston pad is fixedly connected to the surface of the first piston plate away from the hydraulic rods. The first piston pad and the first piston plate are slidably connected inside the upper oil tank. The grease can be pushed by the setting of the first piston pad.

[0008] As a further embodiment of this utility model, the moving mechanism includes a second piston plate, which is fixedly connected to one side of the second piston pad. Two connecting rods are fixedly connected to the surface of the second piston plate away from the second piston pad, and both connecting rods are slidably connected to one side of the oil storage tank. The other ends of the two connecting rods are fixedly connected to the same connecting plate. Four adjusting rods are fixedly connected to the surface of the connecting plate near the oil storage tank, and the four adjusting rods are arranged in pairs. Both sets of adjusting rods are slidably connected to one side of the oil storage tank, and the other ends of both sets of adjusting rods are fixedly connected to a limiting plate. The surface of both limiting plates near the oil storage tank is provided with a constraint mechanism for constraining the second piston pad. A first spring is sleeved on the surface of both sets of adjusting rods. One end of both sets of first springs is fixedly connected to one side of the limiting plate, and the other end of both sets of first springs is fixedly connected to one side of the oil storage tank. The second piston pad can be moved by the setting of the first springs.

[0009] As a further embodiment of this utility model, the constraint mechanism includes a sliding groove, which is opened on one side of the limiting plate. A support plate is slidably connected inside the sliding groove. Three locking holes are opened on the surface of the oil storage tank near the support plate. Locking pins are slidably connected inside each of the three locking holes. The three locking pins are fixedly connected to one side of the support plate. Two limiting rods are fixedly connected to the surface of the support plate away from the locking pins. The two limiting rods are slidably connected to one side of the sliding groove. The other end of the two limiting rods is fixedly connected to the same sliding plate. A pull plate is fixedly connected to the surface of the sliding plate away from the limiting rods. A second spring is sleeved on the surface of each of the two limiting rods. One end of each of the two second springs is fixedly connected to one side inside the sliding groove. The other end of each of the two second springs is fixedly connected to one side of the support plate. By setting the locking pins, the second piston pad can be constrained.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. This utility model adopts a technical solution that connects the oil storage tank and the upper oil tank, thus avoiding the need for frequent grease application during use. This effectively solves the problem of limited storage capacity of the oil storage box, which may lead to frequent grease replenishment during use. After the first piston pad completes its movement, the hydraulic rod will drive it to reset. One-way valves are installed at both ends of the upper oil tank, and both one-way valves are connected to the oil storage tank through a delivery pipe. The oil storage tank stores grease. When the hydraulic rod drives the first piston pad to reset, it can draw the grease from the oil storage tank into the upper oil tank through the one-way valve for continued use later. Because the oil storage tank has a very large storage capacity, frequent grease application during use can be avoided. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a traction device for a semi-trailer proposed in this utility model.

[0013] Figure 2 This is a schematic diagram of the activation mechanism of a traction device for a semi-trailer proposed in this utility model;

[0014] Figure 3 This is a schematic diagram of a restraint mechanism for a traction device for a semi-trailer proposed in this utility model;

[0015] Figure 4 for Figure 3 A magnified structural diagram at point A in the diagram.

[0016] In the diagram: 1. Main body; 2. Upper oil tank; 3. Oil storage tank; 4. Limiting plate; 101. Wear-resistant disc; 102. Guide groove; 103. Oil outlet; 104. Guide pipe; 201. First piston pad; 202. First piston plate; 203. Hydraulic rod; 301. Feed inlet; 302. Fixing lug; 303. Conveying pipe; 304. One-way valve; 305. Second piston pad; 306. Second piston plate; 307. Connecting rod; 308. Connecting plate; 309. Adjusting rod; 310. First spring; 311. Locking hole; 401. Pull plate; 402. Slide groove; 403. Support plate; 404. Locking post; 405. Limiting rod; 406. Second spring; 407. Slide plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figure 1 - Figure 4 A traction device for a semi-trailer includes a main body 1. A wear-resistant disc 101 is fixedly connected to the top of the main body 1. The wear-resistant disc 101 has multiple oil outlet holes 103 on its top. An upper oil tank 2 is fixedly connected to one side of the main body 1. The upper oil tank 2 has an activation mechanism for activating the multiple oil outlet holes 103. Through the upper oil tank 2, grease can be delivered to the wear-resistant disc 101. One-way valves 304 are fixedly connected to both ends of the upper oil tank 2. The other ends of the two one-way valves 304 are fixedly connected to a delivery pipe 3. 03. The other ends of the two conveying pipes 303 are fixedly connected to the same oil storage tank 3. The oil storage tank 3 is slidably connected to a second piston pad 305. The surface of the second piston pad 305 away from the upper oil tank 2 is provided with a moving mechanism for moving the second piston pad 305. The top of the oil storage tank 3 is provided with a feed port 301. The bottom of the oil storage tank 3 is fixedly connected with four fixing ears 302, and the four fixing ears 302 are evenly arranged in a square. By setting the oil storage tank 3, the need to frequently apply grease during use can be avoided.

[0019] Preferably, the activation mechanism includes multiple guide channels 102, all of which are located inside the wear-resistant disc 101. Multiple guide pipes 104 are fixedly connected to the surface of the oil outlet 103 near the upper oil tank 2, and the other ends of the multiple guide pipes 104 are fixedly connected to the side of the upper oil tank 2. The upper oil tank 2, guide pipes 104, guide channels 102, and oil outlet 103 are arranged in a cooperative manner. Two hydraulic rods 203 are fixedly connected to the surface of the upper oil tank 2 away from the wear-resistant disc 101. The output ends of the two hydraulic rods 203 are fixedly connected to the same first piston plate 202. A first piston pad 201 is fixedly connected to the surface of the first piston plate 202 away from the hydraulic rods 203. The first piston pad 201 and the first piston plate 202 are slidably connected inside the upper oil tank 2. The first piston pad 201 can be used to push the grease.

[0020] Preferably, the moving mechanism includes a second piston plate 306, which is fixedly connected to one side of the second piston pad 305. Two connecting rods 307 are fixedly connected to the surface of the second piston plate 306 away from the second piston pad 305, and both connecting rods 307 are slidably connected to one side of the oil reservoir 3. The other ends of the two connecting rods 307 are fixedly connected to the same connecting plate 308. The connecting plate 308 allows the second piston pad 305 to be pulled. Four adjusting rods 309 are fixedly connected to the surface of the connecting plate 308 near the oil reservoir 3. The components are arranged in pairs. Both sets of adjusting rods 309 are slidably connected to one side of the oil storage tank 3, and the other end of each set of adjusting rods 309 is fixedly connected to a limiting plate 4. The surface of each limiting plate 4 near the oil storage tank 3 is provided with a constraint mechanism for constraining the second piston pad 305. The surface of each set of adjusting rods 309 is fitted with a first spring 310. One end of each set of first springs 310 is fixedly connected to one side of the limiting plate 4, and the other end of each set of first springs 310 is fixedly connected to one side of the oil storage tank 3. The second piston pad 305 can be moved by the setting of the first springs 310.

[0021] Furthermore, the restraint mechanism includes a slide 402, which is located on one side of the limiting plate 4. A support plate 403 is slidably connected inside the slide 402. Three locking holes 311 are provided on the surface of the oil storage tank 3 near the support plate 403. Locking pins 404 are slidably connected inside each of the three locking holes 311. The three locking pins 404 are fixedly connected to one side of the support plate 403. Two limiting rods 405 are fixedly connected to the surface of the support plate 403 away from the locking pins 404. The two limiting rods 405 are slidably connected... The slide 402 is attached to one side of the slide 402. The other end of the two limiting rods 405 is fixedly connected to the same slide plate 407. The surface of the slide plate 407 away from the limiting rods 405 is fixedly connected to a pull plate 401. The surfaces of the two limiting rods 405 are each fitted with a second spring 406. One end of each of the two second springs 406 is fixedly connected to one side of the inside of the slide 402. The other end of each of the two second springs 406 is fixedly connected to one side of the support plate 403. The second piston pad 305 can be constrained by the setting of the locking pin 404.

[0022] Working principle: During use, the hydraulic rod 203 drives the first piston pad 201 to move. Because the first piston pad 201 slides inside the upper oil chamber 2, its movement pushes the grease inside the upper oil chamber 2. A guide pipe 104 is installed on one side of the upper oil chamber 2, and the guide pipe 104 is connected to the guide groove 102 inside the wear-resistant disc 101. Thus, when the first piston pad 201 moves, the grease can be input into the wear-resistant disc 101 through the guide pipe 104 and then discharged through the oil outlet 103. After the first piston pad 201 completes its movement, the hydraulic rod 203 will drive it to reset. One-way valves 304 are installed at both ends of the upper oil tank 2, and both one-way valves 304 are connected to the oil storage tank 3 through the delivery pipe 303. The oil storage tank 3 stores grease. When the hydraulic rod 203 drives the first piston pad 201 to reset, it can draw the grease from the oil storage tank 3 into the upper oil tank 2 through the one-way valves 304 for continued use later. Because the oil storage tank 3 has a very large storage capacity, it can avoid frequent grease application during use.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A towing device for a semi-trailer, comprising a main body (1), characterized in that, The main body (1) is fixedly connected to a wear-resistant disc (101) at the top. The wear-resistant disc (101) has multiple oil outlet holes (103) at the top. The main body (1) is fixedly connected to an upper oil tank (2) on one side. The upper oil tank (2) is provided with an activation mechanism for activating the multiple oil outlet holes (103) inside. Both ends of the upper oil tank (2) are fixedly connected to one-way valves (304). The other ends of the two one-way valves (304) are fixedly connected to a conveying pipe (303). The other ends of the two conveying pipes (303) are fixedly connected to the same oil storage tank (3). The oil storage tank (3) is slidably connected to a second piston pad (305). The surface of the second piston pad (305) away from the upper oil tank (2) is provided with a moving mechanism for moving the second piston pad (305). The oil storage tank (3) is provided with a feed inlet (301) at the top. The bottom of the oil storage tank (3) is fixedly connected to four fixed ears (302), and the four fixed ears (302) are evenly arranged in a square shape.

2. The traction device for a semi-trailer according to claim 1, characterized in that, The activation mechanism includes multiple guide grooves (102), all of which are opened inside the wear-resistant disc (101). Multiple guide pipes (104) are fixedly connected to the surface of the oil outlet (103) near the upper oil tank (2), and the other end of each guide pipe (104) is fixedly connected to the side of the upper oil tank (2). The upper oil tank (2), guide pipes (104), guide grooves (102), and oil outlet (103) are arranged in cooperation with each other.

3. The traction device for a semi-trailer according to claim 2, characterized in that, Two hydraulic rods (203) are fixedly connected to the surface of the upper oil tank (2) away from the wear-resistant disc (101). The output ends of the two hydraulic rods (203) are fixedly connected to the same first piston plate (202). A first piston pad (201) is fixedly connected to the surface of the first piston plate (202) away from the hydraulic rods (203). The first piston pad (201) and the first piston plate (202) are both slidably connected inside the upper oil tank (2).

4. The traction device for a semi-trailer according to claim 1, characterized in that, The moving mechanism includes a second piston plate (306), which is fixedly connected to one side of the second piston pad (305). Two connecting rods (307) are fixedly connected to the surface of the second piston plate (306) away from the second piston pad (305), and both connecting rods (307) are slidably connected to one side of the oil storage tank (3). The other end of the two connecting rods (307) is fixedly connected to the same connecting plate (308). Four adjusting rods (309) are fixedly connected to the surface of the connecting plate (308) near the oil storage tank (3), and the four adjusting rods (309) are arranged in pairs. Both sets of adjusting rods (309) are slidably connected to one side of the oil storage tank (3).

5. The traction device for a semi-trailer according to claim 4, characterized in that, Furthermore, the other end of each of the two sets of adjusting rods (309) is fixedly connected to a limiting plate (4). The surface of each of the two limiting plates (4) near the oil storage tank (3) is provided with a constraint mechanism for constraining the second piston pad (305). The surface of each of the two sets of adjusting rods (309) is fitted with a first spring (310). One end of each of the two sets of first springs (310) is fixedly connected to one side of the limiting plate (4), and the other end of each of the two sets of first springs (310) is fixedly connected to one side of the oil storage tank (3).

6. The traction device for a semi-trailer according to claim 5, characterized in that, The constraint mechanism includes a slide groove (402), which is opened on one side of the limiting plate (4). A support plate (403) is slidably connected inside the slide groove (402). Three locking holes (311) are opened on the surface of the oil storage tank (3) near the support plate (403). Locking pins (404) are slidably connected inside the three locking holes (311). The three locking pins (404) are fixedly connected to one side of the support plate (403). Two limiting rods (405) are fixedly connected to the surface of the support plate (403) away from the locking pins (404).

7. The traction device for a semi-trailer according to claim 6, characterized in that, Both limiting rods (405) are slidably connected to one side of the slide groove (402), and the other end of the two limiting rods (405) is fixedly connected to the same sliding plate (407). A pull plate (401) is fixedly connected to the surface of the sliding plate (407) away from the limiting rods (405). A second spring (406) is sleeved on the surface of both limiting rods (405). One end of each of the two second springs (406) is fixedly connected to one side of the inside of the slide groove (402), and the other end of each of the two second springs (406) is fixedly connected to one side of the support plate (403).

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