Semi-trailer traction seat and vehicle

Abstract

The utility model discloses a semi-trailer traction seat and a vehicle. The semi-trailer traction seat comprises a locking seat, a locking assembly and an oiling assembly. A mounting groove is formed in the locking seat; the locking assembly is arranged on the locking base. The oiling assembly comprises an air storage bin, an extrusion shaft, a first elastic piece and a liquid storage barrel. The gas storage bin is arranged in the locking seat, the gas storage bin is communicated with the liquid storage barrel through a gas guide pipe, an oil spraying pipe is arranged on the liquid storage barrel, and a nozzle of the oil spraying pipe faces the locking assembly; the extrusion shaft is slidably mounted in the air storage bin, one end of the extrusion shaft extends out of the air storage bin and is located in the mounting groove, the extrusion shaft is sleeved with the first elastic piece, one end of the first elastic piece is fixedly connected with the extrusion shaft, and the other end of the first elastic piece is fixedly connected with the air storage bin. The traction pin and the arc-shaped locking frame can be automatically lubricated, a traditional oiling mode is not needed, the oiling efficiency is improved, abrasion of the traction pin and the arc-shaped locking frame is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of tractor technology, specifically to a semi-trailer tractor seat and vehicle. Background Technology

[0002] A semi-trailer is connected to the tractor unit via a drawbar pin. Common container trucks are typical semi-trailer trains, with the semi-trailers themselves being the cargo. The drawbar is the connecting device between the tractor unit and the semi-trailer. To extend their service life, lubricant needs to be added between the drawbar pin and the drawbar. Traditionally, lubricant is added by jacking up the trailer and using an oil gun to directly apply lubricant between the drawbar pin and the drawbar. However, with continuous contact between the drawbar pin and the drawbar, the lubricant is easily pushed out of the drawbar, leading to a reduction in the amount and increased wear on parts, thus shortening the service life. Therefore, regular lubrication is necessary, but the traditional method is time-consuming and labor-intensive. Utility Model Content

[0003] The purpose of this utility model is to provide a semi-trailer towing seat and vehicle to overcome the shortcomings of the prior art. It can automatically lubricate the towing pin and arc-shaped locking frame without the need for traditional oiling methods, thereby improving oiling efficiency, reducing wear on the towing pin and arc-shaped locking frame, and increasing service life.

[0004] This utility model provides a semi-trailer towing seat including a locking seat, a locking component, and an oiling component;

[0005] The locking seat is provided with a mounting slot;

[0006] The locking component is disposed on the locking seat and is used to lock the towing pin of the semi-trailer installed in the mounting slot;

[0007] The oiling assembly includes an air storage chamber, an extrusion shaft, a first elastic element, and a liquid storage tank. The air storage chamber is disposed within the locking seat and is connected to the liquid storage tank via an air guide pipe. An oil injection pipe is provided on the liquid storage tank, with the nozzle of the oil injection pipe facing the locking assembly. The extrusion shaft is slidably mounted within the air storage chamber, with one end extending out of the air storage chamber and located within the mounting groove. The first elastic element is sleeved on the extrusion shaft, with one end fixedly connected to the extrusion shaft and the other end fixedly connected to the air storage chamber.

[0008] When the traction pin moves, it can push the extrusion shaft to move, extruding the gas in the gas storage chamber into the liquid storage tank, thereby extruding the lubricating oil in the liquid storage tank, causing the lubricating oil to be sprayed out through the oil spray pipe and sprayed onto the location of the traction pin.

[0009] In the semi-trailer traction seat described above, preferably, a piston is provided on the extrusion shaft, and the piston is slidably and sealingly connected to the air storage chamber.

[0010] In a semi-trailer towing seat as described above, preferably, the other end of the compression shaft extends out of the locking seat, the first elastic element is sleeved on the portion of the compression shaft outside the locking seat, one end of the first elastic element is fixedly connected to the compression shaft, and the other end is fixedly connected to the locking seat.

[0011] In the semi-trailer traction seat described above, preferably, there are two liquid storage tanks, with the two liquid storage tanks located on opposite sides of the extrusion shaft.

[0012] In a semi-trailer towing seat as described above, preferably, the locking assembly includes an arc-shaped locking frame, a compression frame, a second elastic element, and a third elastic element; the arc-shaped locking frame is rotatably mounted on the locking seat, and the arc-shaped locking frame is connected to the locking seat through the second elastic element; the compression frame is slidably mounted on the locking seat, and the compression frame is used to fix the arc-shaped locking frame, and the compression frame is connected to the locking seat through the third elastic element.

[0013] In a semi-trailer towing seat as described above, preferably, the compression frame includes a first connecting part and a second connecting part, one end of the first connecting part is fixedly connected to the second connecting part, and the other end of the first connecting part is connected to the locking seat through the third elastic element; the arc-shaped locking frame includes an arc-shaped rod and a connecting rod, one end of the arc-shaped rod is fixedly connected to one end of the connecting rod; the arc-shaped rod is rotatably connected to the locking seat through a connecting shaft, and the arc-shaped locking frame has two states: a first state: the end of the arc-shaped rod away from the connecting rod abuts against the second connecting part, and the end of the connecting rod away from the arc-shaped rod abuts against the connection between the first connecting part and the second connecting part, which can lock the towing pin within the space enclosed by the arc-shaped rod and the connecting rod; a second state: the end of the connecting rod away from the arc-shaped rod abuts against the end of the second connecting part away from the first connecting part, and the opening formed by the arc-shaped rod and the connecting rod faces the opening direction of the mounting groove.

[0014] In the semi-trailer towing seat described above, preferably, the compression frame is provided with a pull rod that extends out of the locking seat and is slidably connected to the locking seat.

[0015] In the semi-trailer towing seat described above, preferably, the locking seat has a receiving groove, the compression frame and the arc-shaped locking frame are both installed in the receiving groove, one end of the pull rod is located in the receiving groove and fixedly connected to the compression frame, and the other end passes through and extends out of the locking seat.

[0016] As described above, a semi-trailer towing seat preferably further includes a limiting part; the limiting part is disposed in the receiving groove, and the limiting part is used to abut against the connecting rod when the arc-shaped locking frame is in the first state.

[0017] This utility model also provides a vehicle, which is a methanol range-extended electric vehicle, including any of the above-mentioned semi-trailer traction seats, a cab, a 20-foot standard container, a steering axle, and a traction frame. The traction frame is installed under the cab, and the 20-foot standard container is installed on the top of the traction frame to realize the loading function. A semi-trailer traction seat is provided at the end of the traction frame. The semi-trailer traction seat is used to carry a 40-foot semi-trailer. The methanol range-extended electric vehicle is a six-axle vehicle, and all six axles are installed at the traction frame. The first two axles are steering axles, which are connected to the steering wheel of the cab through a power steering mechanism so that the steering wheel of the cab can drive the steering axles to turn.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention uses a traction pin to move a compression shaft, squeezing gas from the gas storage chamber into a liquid storage tank. This causes the lubricating oil in the liquid storage tank to be sprayed onto the traction pin and the arc-shaped locking frame, thus lubricating them. This eliminates the need for traditional lubrication methods, improving lubrication efficiency, reducing wear on the traction pin and the arc-shaped locking frame, and extending their service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a semi-trailer traction seat proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the state of the arc-shaped locking frame in its first state;

[0022] Figure 3 This is a schematic diagram of the arc-shaped locking frame in its second state;

[0023] Figure 4 This is a three-dimensional structural diagram of a vehicle proposed in this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of a vehicle proposed in this utility model from another perspective;

[0025] Figure 6This is a schematic diagram of the driver's cab, tractor frame, and tram radiator;

[0026] Figure 7 It is a schematic diagram of the battery pack, electric drive control box, and tractor frame;

[0027] Figure 8 This is a schematic diagram of a methanol range extender, generator, and tractor frame;

[0028] Figure 9 This is a schematic diagram of the battery pack, methanol tank, and electric drive control box;

[0029] Figure 10 This is a schematic diagram of the drive axle, rear follower axle, and hub motor;

[0030] Figure 11 yes Figure 10 Enlarged view of point A in the middle.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1-Cab, 2-Steering axle, 3-Methanol range extender, 4-Generator, 5-Battery pack, 6-Front follower axle, 7-Electric vehicle radiator, 8-Methanol tank, 9-Electric drive control box, 10-20-foot standard container, 11-Drive axle, 12-Semi-trailer towing seat, 13-Rear follower axle, 14-Electronic brake, 15-Wheel hub motor, 16-Tractor frame, 121-Locking seat, 123-Arc-shaped locking frame, 124-Second round Components: 125-Extrusion frame, 126-Third elastic component, 127-Extrusion shaft, 128-First elastic component, 129-Reservoir tank, 1210-Gas guide pipe, 1211-Injection pipe, 1213-Connecting shaft, 1214-Limiting part, 123a-Arc rod, 123b-Connecting rod, 125a-First connecting part, 125b-Second connecting part, 125c-Pull rod, 101-Mounting groove, 102-Accommodation groove. Detailed Implementation

[0033] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] Embodiment 1 of this utility model: as follows Figures 1-3 As shown, a semi-trailer towing seat includes a locking seat 121, a locking assembly, and an oiling assembly;

[0035] The locking seat 121 has an installation slot 101 for installing the towing pin of the semi-trailer.

[0036] The locking component is provided on the locking seat 121 and is used to lock the towing pin of the semi-trailer installed in the mounting slot 101;

[0037] The oiling assembly includes an air storage chamber, a compression shaft 127, a first elastic element 128, and a liquid storage tank 129. The air storage chamber is located inside the locking seat 121 and is connected to the liquid storage tank 129 via an air guide pipe 1210. The liquid storage tank 129 is equipped with an oil spray pipe 1211, with the nozzle of the oil spray pipe 1211 facing the locking assembly. The compression shaft 127 is slidably installed inside the air storage chamber, with one end of the compression shaft 127 extending out of the air storage chamber and located in the mounting groove 101. The first elastic element 128 is sleeved on the compression shaft 127, with one end of the first elastic element 128 fixedly connected to the compression shaft 127 and the other end fixedly connected to the air storage chamber. When the traction pin moves, it can push the compression shaft 127 to move, squeezing the gas in the air storage chamber into the liquid storage tank 129, thereby squeezing the lubricating oil in the liquid storage tank 129, causing the lubricating oil to be sprayed out through the oil spray pipe 1211 and sprayed onto the location of the traction pin. Furthermore, a piston is provided on the extrusion shaft 127, and the piston is slidably and sealingly connected to the gas storage chamber. The piston is configured to facilitate the extrusion of gas from the gas storage chamber into the liquid storage tank 129 during the movement of the extrusion shaft 127. As one implementation, a locking seat 121 extends from the other end of the extrusion shaft 127. A first elastic element 128 is fitted onto the portion of the extrusion shaft 127 outside the locking seat 121. One end of the first elastic element 128 is fixedly connected to the extrusion shaft 127, and the other end is fixedly connected to the locking seat 121. The first elastic element 128 is used to reset the extrusion shaft 127.

[0038] Of course, in actual use, the first elastic element 128 can also be set inside the gas storage chamber. To facilitate the replenishment of gas into the gas storage chamber, an air inlet can be set on the gas storage chamber, and a one-way valve can be set on the air inlet. When the extrusion shaft 127 is reset under the action of the first elastic element 128, external gas can enter the gas storage chamber to replenish the gas storage chamber.

[0039] The movement of the traction pin drives the extrusion shaft 127 to move, forcing the gas in the gas storage chamber into the liquid storage tank 129, thereby compressing the lubricating oil in the liquid storage tank 129. The lubricating oil is then sprayed out through the oil spray pipe 1211 and sprayed onto the location of the traction pin, thus lubricating the traction pin and the arc-shaped locking frame. This eliminates the need for traditional oiling methods, improves oiling efficiency, reduces wear on the traction pin and the arc-shaped locking frame, and extends their service life.

[0040] As one implementation method, refer to Figure 1 As shown, there are two liquid storage tanks 129, located on either side of the extrusion shaft 127. This ensures that the lubricating oil sprayed onto the traction pin and the arc-shaped locking frame is more even.

[0041] As one implementation method, see Figures 2-3As shown, the locking assembly includes an arc-shaped locking frame 123, a compression frame 125, a second elastic element 124, and a third elastic element 126. The arc-shaped locking frame 123 is rotatably mounted on the locking seat 121 and is connected to the locking seat 121 via the second elastic element 124. The arc-shaped locking frame 123 is used to lock the towing pin of the semi-trailer. The compression frame 125 is slidably mounted on the locking seat 121 and is used to fix the arc-shaped locking frame 123. The compression frame 125 is connected to the locking seat 121 via the third elastic element 126.

[0042] Initially, the compression frame 125 blocks the arc-shaped locking frame 123, and the second elastic element 124 is in a stretched state. When using the semi-trailer to tow the semi-trailer, the compression frame 125 is first pulled forward (i.e., moved away from the arc-shaped locking frame 123). After the compression frame 125 moves forward, it disengages from the arc-shaped locking frame 123, and the third elastic element 126 is stretched. At this time, under the action of the second elastic element 124, the arc-shaped locking frame 123 swings. After the arc-shaped locking frame 123 swings, it abuts against the compression frame 125. At this time, the states of the arc-shaped locking frame 123 and the compression frame 125 are as follows: Figure 2 As shown, the semi-trailer's traction pin is then installed into the mounting slot 101 on the locking seat 121. During installation, the traction pin can squeeze the arc-shaped locking frame 123 to swing. After the arc-shaped locking frame 123 swings, it locks the traction pin. At this time, the arc-shaped locking frame 123 no longer presses against the squeezing frame 125. Under the action of the third elastic element 126, the squeezing frame 125 resets and locks the arc-shaped locking frame 123, thereby achieving traction of the semi-trailer. When the traction pin of the rear semi-trailer moves, it can push the squeezing shaft 127 to move. The first elastic element 128 is stretched. When the squeezing shaft 127 moves, it can squeeze the gas in the air storage chamber, so that the gas enters the liquid storage tank 129 through the air guide pipe 1210, thereby squeezing the lubricating oil in the liquid storage tank 129. The lubricating oil will be sprayed out through the oil spray pipe 1211 and sprayed onto the traction pin, thereby lubricating the traction pin and the arc-shaped locking frame 123.

[0043] In one embodiment, the compression frame 125 includes a first connecting portion 125a and a second connecting portion 125b. One end of the first connecting portion 125a is fixedly connected to the second connecting portion 125b, and the other end of the first connecting portion 125a is connected to the locking seat 121 via a third elastic element 126. The arc-shaped locking frame 123 includes an arc-shaped rod 123a and a connecting rod 123b. One end of the arc-shaped rod 123a is fixedly connected to one end of the connecting rod 123b. The arc-shaped rod 123a is rotatably connected to the locking seat 121 via a connecting shaft 1213. The arc-shaped locking frame 123 has two states. In the first state, the end of the arc-shaped rod 123a away from the connecting rod 123b abuts against the second connecting portion 125b, and the end of the connecting rod 123b away from the arc-shaped rod 123a abuts against the connection between the first connecting portion 125a and the second connecting portion 125b, which can lock the traction pin within the space enclosed by the arc-shaped rod 123a and the connecting rod 123b. (See reference...) Figure 2 As shown; Second state: The end of the connecting rod 123b away from the arc-shaped rod 123a abuts against the end of the second connecting part 125b away from the first connecting part 125a. The opening formed by the arc-shaped rod 123a and the connecting rod 123b faces the opening direction of the mounting groove 101. Figure 3 As shown. Here, the opening direction of the mounting slot 101 refers to the direction in which the traction pin is inserted or removed. When the arc-shaped locking bracket 123 is in the second state, it is convenient for the traction pin to be moved into or out of the space enclosed by the arc-shaped rod 123a and the connecting rod 123b.

[0044] The compression frame 125 is equipped with a pull rod 125c, which extends into a locking seat 121. The pull rod 125c is slidably connected to the locking seat 121. By pulling the pull rod 125c, the arc-shaped locking frame 123 can be easily switched from the first state to the second state. When the pull rod 125c is pulled, the third elastic element 126 is stretched, the compression frame 125 moves away from the arc-shaped locking frame 123, the arc-shaped rod 123a disengages from the second connecting part 125b, and the arc-shaped locking frame 123 rotates around the connecting shaft 1213 under the action of the elastic force of the second elastic element 124. This causes the connecting rod 123b to rotate from the connection between the first connecting part 125a and the second connecting part 125b towards the second connecting part 125b away from the first connecting part 125a, until the connecting rod 123b abuts against the end of the second connecting part 125b away from the first connecting part 125a. At this time, the arc-shaped locking frame 123 is in the second state.

[0045] In one embodiment, the locking seat 121 has a receiving groove 102. The pressing frame 125 and the arc-shaped locking frame 123 are both installed within the receiving groove 102. One end of the pull rod 125c is located within the receiving groove 102 and fixedly connected to the pressing frame 125, while the other end passes through and extends out of the locking seat 121. A limiting part 1214 is also included; the limiting part 1214 is disposed within the receiving groove 102 and is used to abut against the connecting rod 123b when the arc-shaped locking frame 123 is in its first state. A cover plate can be provided on the receiving groove 102, with a clearance opening on the cover plate to avoid the traction pin. The cover plate reduces the amount of dust entering the receiving groove 102.

[0046] This utility model also discloses a vehicle, see below. Figures 4-11 As shown, the vehicle is a methanol-powered range-extended electric vehicle, including a semi-trailer tractor unit 12, a cab 1, a 20-foot standard container 10, a steering axle 2, and a tractor frame 16. The tractor frame 16 is installed under the cab 1, and the 20-foot standard container 10 is installed on top of the tractor frame 16 to achieve loading function. The semi-trailer tractor unit 12 is set at the end of the tractor frame 16. The semi-trailer tractor unit 12 is used to carry a 40-foot semi-trailer. This methanol-powered range-extended electric vehicle is a six-axle vehicle, with all six axles installed at the tractor frame 16. The first two axles are steering axles 2, which are connected to the steering wheel of the cab 1 through a power steering mechanism so that the steering wheel of the cab 1 can drive the steering axles 2 to steer.

[0047] It also includes a front follower axle 6, a drive axle 11, a hub motor 15, and a rear follower axle 13. The third axle of this methanol range-extended electric vehicle is the front follower axle 6. The fourth and fifth axles of this methanol range-extended electric vehicle are drive axles 11. The drive axle 11 is equipped with a hub motor 15, which directly drives the wheels through a reducer to minimize the force line path. The sixth axle of this methanol range-extended electric vehicle is the rear follower axle 13. Both the front follower axle 6 and the rear follower axle 13 are used to increase the load-bearing capacity.

[0048] like Figure 7 and Figure 9 As shown, it also includes a battery pack 5. Two battery packs 5 are installed in the middle section of the tractor frame 16. The battery packs 5 are electrically connected to the hub motor 15 and are used to power the hub motor 15. Both battery packs 5 can be filled with 75 kWh of electricity and can drive an 80-ton heavy-duty commercial vehicle for 115 kilometers.

[0049] like Figure 8As shown, it also includes a methanol range extender 3, a methanol tank 8, and a generator 4. The methanol range extender 3 and the generator 4 are installed on the tractor frame 16. The output end of the methanol range extender 3 and the input end of the generator 4 are connected by a bevel gear transmission so that the operation of the methanol range extender 3 can drive the operation of the generator 4 to generate electricity. The generator 4 is electrically connected to the battery pack 5 and the hub motor 15 respectively so that the electricity generated by the generator 4 can be stored in the battery pack 5. Methanol tanks 8 are installed on both the front and rear sides of the middle section of the tractor frame 16. The internal volume of a single methanol tank 8 is 600L.

[0050] like Figure 6 As shown, it also includes a tram radiator 7, which is installed on the upper right side of the cab 1. The tram radiator 7 is used to dissipate the extra heat generated by the electric drive so that the electric drive components can operate within a suitable temperature range.

[0051] like Figure 7 and Figure 9 As shown, it also includes an electric drive control box 9, which is installed on the tractor frame 16. The electric drive control box 9 is electrically connected to the hub motor 15 and the methanol range extender 3.

[0052] like Figure 10 and Figure 11 The vehicle also includes an electronic brake 14, which is equipped on the drive axle 11, rear follower axle 13, front follower axle 6 and steering axle 2 to enable braking of each wheel. The speed of the electronic brake 14 ensures the safe operation of the heavy-duty hub motor 15 methanol range-extended multimodal commercial electric vehicle.

[0053] During the operation of this methanol range-extended traction electric vehicle, when encountering uphill heavy-load driving, the methanol range extender 3 operates to drive the generator 4 to generate electricity. The electricity generated by the generator 4, together with the electricity stored in the battery pack 5, supplies the hub motor 15 to achieve high-horsepower traction. When driving downhill, the current generated by the electric braking of the hub motor 15 is sent to the battery pack 5 to realize the recovery of electrical energy. When the battery pack 5's charge is lower than 50%, the electric drive control box 9 controls the methanol range extender 3 to work and charge the battery pack 5.

[0054] The use of hub motor 15 eliminates the need for a mechanical differential. Since the drive wheels are driven independently, electronic differentials are used to coordinate the speeds of the drive wheels when the traction tram is turning. Using hub motor 15 saves internal space in the traction tram, making it easier to arrange the battery pack 5 and other components.

[0055] When using this invention, the battery pack does not need to be equipped with too many components. During operation, the methanol range extender can drive the generator to generate electricity, and the generated power can be conducted to the battery pack for storage and use, thereby reducing the weight of the battery pack.

[0056] This invention uses a hub motor to drive the drive axle, enabling the entire trolley to move. Using a hub motor saves internal space in the trolley and makes it easier to arrange the battery pack and other components.

[0057] This invention can automatically spray lubricating oil for lubrication during the process of using a semi-trailer traction seat to pull a semi-trailer.

[0058] The basic principles of this utility model have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this utility model are merely examples and not limitations, and should not be considered as essential features of each embodiment of this utility model. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the utility model from being implemented using the aforementioned specific details.

[0059] The block diagrams of the devices, apparatuses, equipment, and systems involved in this utility model are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0060] Additionally, as used herein, the “or” used in a list of items beginning with “at least one” indicates a separate list, such that a list of, for example, “at least one of A, B, or C” means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word “exemplary” does not imply that the described example is preferred or better than other examples.

[0061] It should also be noted that in the system and method of this utility model, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this utility model.

[0062] Various changes, substitutions, and modifications can be made to the technology described herein without departing from the teachings defined by the appended claims. Furthermore, the scope of the claims of this utility model is not limited to the specific aspects of the processes, machines, manufacturing processes, events, means, methods, and actions described above. Currently existing or later-developed processes, machines, manufacturing processes, events, means, methods, or actions that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein can be utilized. Therefore, the appended claims include such processes, machines, manufacturing processes, events, means, methods, or actions within their scope.

[0063] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present invention. Therefore, the present invention is not intended to be limited to the aspects shown herein, but rather to be carried out within the widest scope consistent with the principles and novel features disclosed herein.

[0064] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present invention to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.

Claims

1. A semi-trailer hitch plate, characterized by: The locking seat (121), the locking assembly and the oiling assembly are included; The mounting groove (101) is formed on the locking seat (121); The locking assembly is arranged on the locking seat (121) and used for locking the drawbar of the semitrailer installed in the mounting groove (101); The oiling assembly includes a gas storage bin, an extrusion shaft (127), a first elastic member (128) and a liquid storage barrel (129); the gas storage bin is arranged in the locking seat (121) and is communicated with the liquid storage barrel (129) through a gas guide pipe (1210); the liquid storage barrel (129) is provided with an oil injection pipe (1211) and the oil injection pipe (1211) is directed towards the locking assembly; the extrusion shaft (127) is slidably arranged in the gas storage bin and one end of the extrusion shaft (127) extends out of the gas storage bin and is located in the mounting groove (101); the first elastic member (128) is sleeved on the extrusion shaft (127) and one end of the first elastic member (128) is fixedly connected with the extrusion shaft (127) and the other end is fixedly connected with the gas storage bin; When the drawbar moves, the extrusion shaft (127) is pushed to move, the gas in the gas storage bin is extruded into the liquid storage barrel (129), the lubricating oil in the liquid storage barrel (129) is extruded, the lubricating oil is sprayed out through the oil injection pipe (1211) and is sprayed to the position of the drawbar.

2. The semi-trailer hitch seat of claim 1, wherein: A piston is arranged on the extrusion shaft (127) and the piston is in sliding sealing connection with the gas storage bin.

3. The semi-trailer hitch seat of claim 2, wherein: The other end of the extrusion shaft (127) extends out of the locking seat (121), the first elastic member (128) is sleeved on the part of the extrusion shaft (127) located outside the locking seat (121), one end of the first elastic member (128) is fixedly connected with the extrusion shaft (127) and the other end is fixedly connected with the locking seat (121).

4. The semi-trailer hitch seat of claim 3, wherein: The liquid storage barrel (129) is two and the two liquid storage barrels (129) are respectively located on the two sides of the extrusion shaft (127).

5. The semi-trailer hitch seat of claim 1, wherein: The locking assembly includes an arc-shaped locking frame (123), an extrusion frame (125), a second elastic member (124) and a third elastic member (126); the arc-shaped locking frame (123) is rotatably arranged on the locking seat (121) and is connected with the locking seat (121) through the second elastic member (124); the extrusion frame (125) is slidably arranged on the locking seat (121) and is used for fixing the arc-shaped locking frame (123); the extrusion frame (125) is connected with the locking seat (121) through the third elastic member (126).

6. The semi-trailer hitch seat of claim 5, wherein: The extrusion frame (125) comprises a first connecting part (125a) and a second connecting part (125b), one end of the first connecting part (125a) is fixedly connected with the second connecting part (125b), the other end of the first connecting part (125a) is connected with the locking seat (121) through the third elastic piece (126); the arc-shaped locking frame (123) comprises an arc-shaped rod (123a) and a connecting rod (123b), one end of the arc-shaped rod (123a) is fixedly connected with one end of the connecting rod (123b); the arc-shaped rod (123a) is rotationally connected with the locking seat (121) through a connecting shaft (1213), the arc-shaped locking frame (123) has two states, the first state: the end of the arc-shaped rod (123a) away from the connecting rod (123b) abuts against the second connecting part (125b), the end of the connecting rod (123b) away from the arc-shaped rod (123a) abuts against the connection between the first connecting part (125a) and the second connecting part (125b), and the traction pin can be locked in the space surrounded by the arc-shaped rod (123a) and the connecting rod (123b); the second state: the end of the connecting rod (123b) away from the arc-shaped rod (123a) abuts against the end of the second connecting part (125b) away from the first connecting part (125a), and the opening formed by the arc-shaped rod (123a) and the connecting rod (123b) faces the opening direction of the mounting groove (101).

7. The semi-trailer hitch seat of claim 6, wherein: The extrusion frame (125) is provided with a pull rod (125c), the pull rod (125c) extends out of the locking seat (121), and the pull rod (125c) is slidably connected with the locking seat (121).

8. The semi-trailer hitch seat of claim 7, wherein: The locking seat (121) is provided with a containing groove (102), the extrusion frame (125) and the arc-shaped locking frame (123) are mounted in the containing groove (102), one end of the pull rod (125c) is fixedly connected with the extrusion frame (125) in the containing groove (102), and the other end penetrates through and extends out of the locking seat (121).

9. The semi-trailer hitch seat of claim 8, wherein: Further comprising a limiting part (1214); the limiting part (1214) is arranged in the containing groove (102), and the limiting part (1214) abuts against the connecting rod (123b) when the arc-shaped locking frame (123) is in the first state.

10. A vehicle characterized by: The vehicle is a methanol extended range electric vehicle, comprising a semi-trailer traction seat as claimed in any one of claims 1-9, a cab (1), a 20-foot standard container (10), a steering bridge (2), a tractor frame (16), the tractor frame (16) being installed at the lower part of the cab (1), the top of the tractor frame (16) being installed with a 20-foot standard container (10) to realize the loading function, the end of the tractor frame (16) being provided with a semi-trailer traction seat (12), the semi-trailer traction seat (12) being used to carry a 40-foot semi-trailer, the methanol extended range electric vehicle being a six-axle vehicle, the six axles being installed at the tractor frame (16), the front two axles being the steering bridge (2) connected to the steering wheel of the cab (1) through a power assisting mechanism, so that the steering wheel of the cab (1) can drive the steering bridge (2) to steer.

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