A quick hitch and locking device for a trailer

Abstract

The utility model relates to trailer connecting piece technical field, and a trailer quick connection and locking device is concretely said, including trailer arm, connection, frame and reservation groove, the connecting seat sets up in trailer arm one side, the connecting seat top is provided with the slot hole, the connecting seat top at one side of slot hole is provided with the guide inclined plane, the trailer arm top is provided with locking assembly, the locking assembly includes the cylinder that is connected in the trailer arm top through the thread groove, the fixed column is penetrated and is connected in the cylinder inner bottom, the fixed column top end is connected with the connecting rod through the thread groove, the one end of connecting seat is inserted into the trailer arm, and the fixed column is pushed and goes up through the guide inclined plane and semicircular structure block, after the complete insertion of connecting seat, the compression spring pushes the fixed column and goes down, makes it insert into the slot hole, locks the connecting seat in the trailer arm, prevents the connecting seat from falling off in the trailer arm, can realize quick connection and locking.

Description

Technical Field

[0001] This utility model relates to the field of trailer connector technology, specifically to a trailer quick connection and locking device. Background Technology

[0002] Trailer connectors are specialized components used to achieve a mechanical connection between a tractor and a trailer. Trailer arms are widely used trailer connectors and are important components in automobile towing and towing systems. They are usually made of carbon steel or aluminum alloy and achieve a physical connection through a mechanical interface.

[0003] Existing trailer connectors require personnel to first pull out the pin before connecting, and then insert the pin again to lock it after connection, which is time-consuming and labor-intensive. Therefore, a quick trailer connection and locking device is proposed, in which the connector is directly inserted into the trailer arm. The connector enters the trailer arm and pushes the fixing post upward. After insertion, the fixing post is inserted into the guide slope for locking, which saves time and effort. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a trailer quick connection and locking device. The connecting seat is directly inserted into the trailer arm, and the connecting seat pushes the fixing column upward after entering the trailer arm. After insertion, the fixing column is inserted into the guide slope for locking, which saves time and effort.

[0005] The technical solution adopted by this utility model to solve its technical problem is a trailer quick connection and locking device, including a trailer arm, a connecting seat, a frame and a reserved slot. The connecting seat is disposed on one side of the trailer arm, and a slot is opened on the top of the connecting seat. A guide slope is provided on the top of the connecting seat on one side of the slot, and a locking component is provided on the top of the trailer arm. The locking assembly includes a cylinder connected to the top of the trailer arm via a threaded groove. A fixing post is sleeved through the bottom of the cylinder. A connecting rod is connected to the top of the fixing post via a threaded groove. A compression spring is fixed to the top of the pre-reserved groove located outside the connecting rod by bolts.

[0006] By adopting the above technical solution, the connecting seat can be inserted into the trailer arm to achieve quick connection. The compression spring pushes the fixing post down so that its bottom end is inserted into the slot, which can fix and lock the trailer arm inserted into the connecting seat.

[0007] Specifically, a sheath is welded to the top of the cylinder, the top of the connecting rod passes through the sheath, and a gripping block is connected to the top of the connecting rod through a threaded groove.

[0008] Specifically, a semi-circular structural block is welded to the bottom of the fixed column, and the top of the compression spring is fixed to the top of the cylinder by bolts.

[0009] Specifically, the connecting seat has a through groove at the top of one side of the guide slope, and a connecting column is sleeved inside the through groove. The top and bottom of the connecting column are provided with frames.

[0010] Specifically, a limit groove is provided at the bottom of the trailer arm, a limit strip is welded to the bottom of the connecting seat, and mounting blocks are welded to the top and bottom of the trailer arm and the frame.

[0011] The beneficial effects of this utility model are: The present invention discloses a trailer quick connection and locking device, wherein one end of the connecting seat is inserted into the trailer arm. When the connecting seat is inserted into the trailer arm, the guide ramp and the semi-circular structural block push the fixing post upward, which can achieve quick connection. After the connecting seat is fully inserted into the trailer arm, the compression spring pushes the fixing post downward, so that it is inserted into the slot, locking the connecting seat inserted into the trailer arm and preventing the connecting seat from falling out of the trailer arm. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the trailer arm and locking assembly of this utility model; Figure 3 This is a schematic diagram of the connector structure of this utility model; In the diagram: 1. Trailer arm; 2. Connecting seat; 201. Guide slope; 202. Slot; 3. Locking assembly; 301. Cylinder; 302. Fixing post; 303. Semi-circular structural block; 304. Reserved slot; 305. Connecting rod; 306. Compression spring; 307. Protective sleeve; 308. Grip block; 4. Limiting slot; 5. Limiting strip; 6. Mounting block; 7. Through slot; 8. Connecting post; 9. Frame. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] Simply insert the connector into the trailer arm. The connector, once inside the trailer arm, pushes the fixing post upwards. After insertion, the fixing post locks into the guide ramp, saving time and effort. Figures 1-3As shown, the trailer quick connection and locking device of this utility model includes a trailer arm 1, a connecting seat 2, a frame 9 and a reserved slot 304. The connecting seat 2 is disposed on one side of the trailer arm 1. The top of the connecting seat 2 is provided with a slot 202. The top of the connecting seat 2 located on the side of the slot 202 is provided with a guide slope 201. The top of the trailer arm 1 is provided with a locking component 3. The locking assembly 3 includes a cylinder 301 connected to the top of the trailer arm 1 via a threaded groove. A fixing post 302 is sleeved through the bottom of the cylinder 301. A connecting rod 305 is connected to the top of the fixing post 302 via a threaded groove. A compression spring 306 is fixed to the top of the reserved groove 304 located outside the connecting rod 305 by bolts.

[0016] When in use, inserting the connecting seat 2 into the trailer arm 1 can achieve quick connection. The compression spring 306 pushes the fixing post 302 down so that its bottom end is inserted into the slot 202, which can fix and lock the trailer arm 1 inserted into the connecting seat 2.

[0017] For example, such as Figure 2 As shown, the present invention also includes a sheath 307 welded to the top of the cylinder 301, the top of the connecting rod 305 passing through the sheath 307, and a gripping block 308 connected to the top of the connecting rod 305 through a threaded groove.

[0018] When in use, the protective sleeve 307 can prevent the connecting rod 305 from tilting without affecting its up and down movement, and the grip block 308 makes it convenient for personnel to grip and pull the connecting rod 305.

[0019] For example, such as Figure 2 As shown, the present invention also includes a semi-circular structural block 303 welded to the bottom end of the fixing column 302, and the top of the compression spring 306 is fixed to the top of the inner cylinder 301 by bolts.

[0020] When in use, the semi-circular structural block 303 allows the connecting seat 2 to move upward by pushing the fixed column 302 through the guide ramp 201.

[0021] For example, such as Figure 3 As shown, the present invention also includes a through groove 7 that is provided at the top of the connecting seat 2 on one side of the guide slope 201, a connecting post 8 that is sleeved through the through groove 7, and a frame 9 that is provided at the top and bottom of the connecting post 8.

[0022] When in use, the connecting seat 2 is fitted onto the outside of the connecting column 8 through the through groove 7, and the frame 9 is fixed on the trailer. After that, the connecting seat 2 can rotate.

[0023] For example, such as Figure 2 , Figure 3As shown, the present invention also includes a limiting groove 4 formed at the bottom of the trailer arm 1, a limiting strip 5 welded to the bottom of the connecting seat 2, and mounting blocks 6 welded to the top and bottom of the trailer arm 1 and the frame 9.

[0024] In use, the limit bar 5 and the mounting block 6 are used to guide and limit the connecting seat 2 inserted into the trailer arm 1.

[0025] In use, personnel use bolts to fix the trailer arm 1 to the towing equipment via the mounting block 6 on the trailer arm 1, and use bolts to fix it to the trailer via the mounting block 6 on the connecting seat 2. One end of the connecting seat 2 is inserted into the trailer arm 1. When the connecting seat 2 is inserted into the trailer arm 1, the guide inclined surface 201 and the semi-circular structural block 303 push the fixing post 302 to move upward. After the connecting seat 2 is fully inserted into the trailer arm 1, the compression spring 306 pushes the fixing post 302 to move downward, so that it is inserted into the slot 202, thereby locking the connecting seat 2 inserted into the trailer arm 1 and preventing the connecting seat 2 from falling out of the trailer arm 1. The connecting column 8 between the frames 9 is sleeved in the through groove 7, so that the connecting seat 2 can rotate. After the connecting seat 2 and the trailer arm 1 are connected, it will not affect the rotation between the towing equipment and the trailer. When the connecting seat 2 is inserted into the trailer arm 1, the limiting strip 5 is inserted into the limiting groove 4, which can guide and limit the connecting seat 2. Personnel can hold the grip block 308 and pull the connecting rod 305 upwards, which can move the fixed column 302 upwards, thereby pulling the connecting seat 2 out of the trailer arm 1. The protective sleeve 307 is used to protect the connecting rod 305, preventing it from tilting without affecting its up and down movement.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A trailer quick-connect and locking device, characterized in that, It includes a trailer arm (1), a connecting seat (2), a frame (9) and a reserved slot (304). The connecting seat (2) is located on one side of the trailer arm (1). A slot (202) is provided on the top of the connecting seat (2). A guide slope (201) is provided on the top of the connecting seat (2) on one side of the slot (202). A locking component (3) is provided on the top of the trailer arm (1). The locking assembly (3) includes a cylinder (301) connected to the top of the trailer arm (1) via a threaded groove. A fixing post (302) is sleeved through the bottom of the cylinder (301). A connecting rod (305) is connected to the top of the fixing post (302) via a threaded groove. A compression spring (306) is fixed to the top of the reserved groove (304) located outside the connecting rod (305) by bolts.

2. The trailer quick-connection and locking device according to claim 1, characterized in that, The top of the cylinder (301) is welded with a sheath (307), the top of the connecting rod (305) passes through the sheath (307), and the top of the connecting rod (305) is connected to a gripping block (308) through a threaded groove.

3. The trailer quick-connection and locking device according to claim 1, characterized in that, The bottom end of the fixed column (302) is welded with a semi-circular structural block (303), and the top of the compression spring (306) is fixed to the top of the inner cylinder (301) by bolts.

4. The trailer quick-connection and locking device according to claim 1, characterized in that, The connecting seat (2) has a through groove (7) on the top of one side of the guide slope (201), and a connecting column (8) is sleeved inside the through groove (7). The top and bottom of the connecting column (8) are provided with a frame (9).

5. A trailer quick-connection and locking device according to claim 1, characterized in that, The trailer arm (1) has a limit groove (4) at its bottom, the connecting seat (2) has a limit strip (5) welded to its bottom, and the trailer arm (1) and the frame (9) have mounting blocks (6) welded to their top and bottom.

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