High-stability locking device for trailer installation

Abstract

The utility model discloses a high-stability locking device for trailer installation, which belongs to the technical field of trailer installation and comprises a connecting block, the front surface of the connecting block is fixedly connected with a protective shell and a base, two first fixing blocks are fixedly connected in the protective shell, a cross rod assembly is arranged in the protective shell, and the cross rod assembly is fixedly connected with the base. The cross rod assembly comprises a cross rod main body; through the arrangement of the threaded rod, the hexagon bolt, the nut, the connecting piece, the second fixing rod, the second fixing block, the plug pin body, the third fixing rod, the cross rod body, the first sliding groove and the second sliding groove, the hexagon bolt is rotated to enable the nut to move up and down through the threaded rod; the nut drives the bolt body to move through the second fixing rod, the second fixing block, the cross rod body, the second sliding groove and the third fixing rod, connection with the connecting piece is completed, limiting is not needed after locking is completed, operation is easy, and use is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of trailer installation, and in particular relates to a locking device for trailer installation with high stability. Background Art

[0002] The trailer-mounted locking device is a safety device used to ensure the connection between the trailer and the tractor. The main purpose of this locking device is to prevent the trailer from detaching or loosening when driving or parking, thereby improving the stability and safety of the entire trailer combination.

[0003] The traditional locking device needs to limit the pin by bolts and nuts after completing the locking, and manual intervention is required to ensure the locking limit. It is inconvenient to use and complicated to operate. Therefore, a high-stability trailer installation locking device is needed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a locking device for trailer installation with high stability, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a locking device for trailer installation with high stability, comprising a connecting block, a protective shell and a base are fixedly connected to the front of the connecting block, two first fixing blocks are fixedly connected to the inside of the protective shell, a cross bar assembly is arranged inside the protective shell, the cross bar assembly comprises a cross bar body, a first fixing rod is fixedly connected to the inside of the two first fixing blocks, the cross bar body is rotatably connected to the outside of the first fixing rod, a first slide groove and a second slide groove are opened on the surface of the cross bar body, a moving assembly is arranged above the base, the moving assembly comprises a threaded rod, a hexagonal bolt and a nut, the threaded rod is rotatably connected to the inside of the base, two second fixing blocks are fixedly connected to the top of the nut, the second fixing rod is slidably connected to the inside of the first slide groove, a supporting assembly is arranged inside the protective shell, the supporting assembly comprises a telescopic rod, the telescopic rod is fixedly connected to the inside of the protective shell, a latch assembly is arranged below the telescopic rod, the latch assembly is provided with a latch body and a third fixing rod, and the latch body is fixedly connected to the bottom end of the telescopic rod.

[0006] By providing a threaded rod, a hexagonal bolt, a nut, a connecting piece, a second fixing rod, a second fixing block, a latch body, a third fixing rod, a cross bar body, a first slide groove and a second slide groove, the hexagonal bolt is rotated, and the hexagonal bolt causes the nut to move up and down through the threaded rod, and the nut drives the latch body to move through the second fixing rod, the second fixing block, the cross bar body, the second slide groove and the third fixing rod, thereby completing the connection with the connecting piece, without the need to limit the position after completing the locking, the operation is simple, and it is easy to use.

[0007] As a preferred embodiment, a trailer body is arranged on the back of the connecting block, a support frame is fixedly connected to the lower surface of the trailer body, and the support frame is fixedly connected to the outside of the connecting block.

[0008] By setting up a support frame, the stability of the trailer is further improved to ensure that there will be no shaking or tilting during driving.

[0009] As a preferred implementation, the protective shell is located above the base, a connecting piece is provided between the protective shell and the base, and the latch body is plugged into the connecting piece.

[0010] By providing a connecting piece and closely fitting the connecting piece with the protective shell and the base, the locking device has higher stability after the locking is completed, thus avoiding the potential safety hazard caused by the loose connection between the trailer and the tractor.

[0011] As a preferred embodiment, a spring is arranged outside the telescopic rod, one end of the spring is fixedly connected to the inside of the protective shell, and the other end of the spring is fixedly connected to the latch body.

[0012] By setting up a protective shell, the internal structure is protected.

[0013] As a preferred implementation, the third fixing rod is fixedly connected inside the latch body, and the third fixing rod is slidably connected inside the second sliding groove.

[0014] The third fixing rod is provided so that the latch body is connected to the crossbar body.

[0015] As a preferred implementation, the hexagonal bolt is fixedly connected to the bottom end of the threaded rod, and the nut is threadedly connected to the outside of the threaded rod.

[0016] By setting the threaded rod, the hexagonal bolt allows the nut to move up and down through the threaded rod.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model is provided with a threaded rod, a hexagonal bolt, a nut, a connecting piece, a second fixing rod, a second fixing block, a latch body, a third fixing rod, a cross bar body, a first slide groove and a second slide groove. The hexagonal bolt is rotated, and the hexagonal bolt causes the nut to move up and down through the threaded rod. The nut drives the latch body to move through the second fixing rod, the second fixing block, the cross bar body, the second slide groove and the third fixing rod to complete the connection with the connecting piece. There is no need to limit the position after completing the locking. The operation is simple and easy to use.

[0019] The utility model is provided with a telescopic rod, a spring, a protective shell and a base. When the bolt body is inserted into the connecting piece, the telescopic rod and the spring provide sufficient strength and stability to ensure that the bolt body is stably inserted into the connecting piece, thereby further improving the locking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0022] Figure 3 It is a schematic diagram of a cross-sectional structure of a part of the utility model in a three-dimensional side view;

[0023] Figure 4 It is a schematic diagram of a cross-sectional structure of a part of the utility model in a three-dimensional side view;

[0024] Figure 5 It is a schematic diagram of a cross-sectional structure of a part of the utility model viewed from above.

[0025] In the figure: 1. connecting block; 2. supporting frame; 3. trailer body; 4. supporting assembly; 41. telescopic rod; 42. spring; 5. protective shell; 6. base; 7. latch assembly; 71. latch body; 72. third fixing rod; 8. cross bar assembly; 81. cross bar body; 82. first slide groove; 83. second slide groove; 9. moving assembly; 91. threaded rod; 92. hexagonal bolt; 93. nut; 94. second fixing rod; 95. second fixing block; 10. first fixing block; 11. connecting piece; 12. first fixing rod. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the embodiments.

[0027] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0028] See also Figure 1-5 The utility model provides a high-stability locking device for trailer installation, including a connecting block 1, a protective shell 5 and a base 6 are fixedly connected to the front of the connecting block 1, two first fixed blocks 10 are fixedly connected to the inside of the protective shell 5, a cross bar assembly 8 is arranged inside the protective shell 5, the cross bar assembly 8 includes a cross bar body 81, a first fixed rod 12 is fixedly connected to the inside of the two first fixed blocks 10, the cross bar body 81 is rotatably connected to the outside of the first fixed rod 12, a first slide groove 82 and a second slide groove 83 are opened on the surface of the cross bar body 81, and a motion assembly 9 is arranged above the base 6, and the motion assembly 9 includes a threaded rod 91, Hexagonal bolts 92 and nuts 93, threaded rod 91 are rotatably connected to the inside of the base 6, two second fixed blocks 95 are fixedly connected to the top of the nut 93, and the inside of the two second fixed blocks 95 is fixedly connected to the second fixed rod 94, and the second fixed rod 94 is slidably connected to the inside of the first slide groove 82. A support assembly 4 is arranged inside the protective shell 5, and the support assembly 4 includes a telescopic rod 41, and the telescopic rod 41 is fixedly connected to the inside of the protective shell 5. A latch assembly 7 is arranged below the telescopic rod 41, and the latch assembly 7 is provided with a latch body 71 and a third fixed rod 72, and the latch body 71 is fixedly connected to the bottom end of the telescopic rod 41.

[0029] A trailer body 3 is provided on the back of the connecting block 1, and a support frame 2 is fixedly connected to the lower surface of the trailer body 3, and the support frame 2 is fixedly connected to the outside of the connecting block 1. By providing the support frame 2, the stability of the trailer is further improved to ensure that there is no shaking or tilting during driving. The protective shell 5 is located above the base 6, and a connecting piece 11 is provided between the protective shell 5 and the base 6. The latch body 71 is inserted into the connecting piece 11. By providing the connecting piece 11, the tight fit between the connecting piece 11, the protective shell 5 and the base 6 makes the locking device have higher stability after the locking is completed, avoiding the safety hazard caused by the loose connection between the trailer and the tractor. A spring 42 is provided on the outside of the telescopic rod 41, and one end of the spring 42 is fixedly connected to the inside of the protective shell 5, and the other end of the spring 42 is fixedly connected to the latch body 71. By providing the protective shell 5, the internal structure is protected.

[0030] The third fixing rod 72 is fixedly connected to the inside of the latch body 71, and the third fixing rod 72 is slidably connected to the inside of the second slide groove 83. By setting the third fixing rod 72, the latch body 71 is connected to the cross bar body 81, the hexagonal bolt 92 is fixedly connected to the bottom end of the threaded rod 91, and the nut 93 is threadedly connected to the outside of the threaded rod 91. By setting the threaded rod 91, the hexagonal bolt 92 passes through the threaded rod 91 so that the nut 93 can move up and down.

[0031] The working principle and use process of this utility model:

[0032] When installing the trailer, the hexagonal bolt 92 is rotated, and the hexagonal bolt 92 drives the threaded rod 91 to rotate. The rotating threaded rod 91 causes the nut 93 to move upward, and the nut 93 drives the second fixing rod 94 and the second fixing block 95 to move upward together. The second fixing rod 94 drives the cross bar body 81 to rotate upward, and the cross bar body 81 drives the third fixing rod 72 to move upward through the second sliding groove 83. The third fixing rod 72 drives the latch body 71 to move upward, align the connecting piece 11 with the latch body 71, and rotate the hexagonal bolt 92 in the opposite direction to make the latch body 71 move downward, ensuring that the latch body 71 is plugged into the inside of the connecting piece 11 to complete the installation.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-stability locking device for trailer installation, comprising a connecting block (1), characterized in that: The front of the connecting block (1) is fixedly connected with a protective shell (5) and a base (6); the interior of the protective shell (5) is fixedly connected with two first fixed blocks (10); a cross bar assembly (8) is arranged inside the protective shell (5); the cross bar assembly (8) comprises a cross bar body (81); the interiors of the two first fixed blocks (10) are fixedly connected with a first fixed rod (12); the cross bar body (81) is rotatably connected to the outside of the first fixed rod (12); the surface of the cross bar body (81) is provided with a first slide groove (82) and a second slide groove (83); a moving assembly (9) is arranged above the base (6); the moving assembly (9) comprises a threaded rod (91), a hexagonal bolt (92) and a nut (93); the screw The threaded rod (91) is rotatably connected to the inside of the base (6); the top end of the nut (93) is fixedly connected to two second fixed blocks (95); the insides of the two second fixed blocks (95) are fixedly connected to second fixed rods (94); the second fixed rods (94) are slidably connected to the inside of the first slide groove (82); a support assembly (4) is arranged inside the protective shell (5); the support assembly (4) includes a telescopic rod (41); the telescopic rod (41) is fixedly connected to the inside of the protective shell (5); a latch assembly (7) is arranged below the telescopic rod (41); the latch assembly (7) includes a latch body (71) and a third fixed rod (72); the latch body (71) is fixedly connected to the bottom end of the telescopic rod (41).

2. A high-stability trailer mounting locking device according to claim 1, characterized in that: A trailer body (3) is arranged on the back of the connecting block (1), a support frame (2) is fixedly connected to the lower surface of the trailer body (3), and the support frame (2) is fixedly connected to the outside of the connecting block (1).

3. A high-stability locking device for trailer installation according to claim 1, characterized in that: The protective shell (5) is located above the base (6), a connecting piece (11) is provided between the protective shell (5) and the base (6), and the latch body (71) is plugged into the connecting piece (11).

4. A high-stability locking device for trailer installation according to claim 1, characterized in that: A spring (42) is arranged outside the telescopic rod (41), one end of the spring (42) is fixedly connected to the inside of the protective shell (5), and the other end of the spring (42) is fixedly connected to the latch body (71).

5. A high-stability locking device for trailer installation according to claim 4, characterized in that: The third fixing rod (72) is fixedly connected inside the latch body (71), and the third fixing rod (72) is slidably connected inside the second sliding groove (83).

6. A high-stability trailer mounting locking device according to claim 1, characterized in that: The hexagonal bolt (92) is fixedly connected to the bottom end of the threaded rod (91), and the nut (93) is threadedly connected to the outside of the threaded rod (91).

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