Tractor with swivelable ball head

Abstract

The utility model relates to vehicle traction technical field, especially a trailer ware of ball head can turn, including trailer main part and set up on the trailer main part trailer assembly, the trailer assembly includes connecting piece and trailer piece, the connecting piece is opened and has rotary connection groove, one end of trailer piece is provided with the rotating shaft, the rotating shaft is in the rotary connection groove, and the connecting piece can rotate relative to the rotating shaft, the rotating shaft with the connecting piece between be provided with for limiting the rotating shaft occurs axial displacement to prevent the device of the rotary connection groove from separating, the prevent the device includes setting in the rotating shaft on the limit ring groove, one end of connecting piece is opened and has with the rotary connection groove intercommunication groove intercommunication, the intercommunication groove is provided with the clamping block, the clamping block lower end is embedded in the limit ring groove, for limiting the rotating shaft occurs axial displacement.

Description

Technical Field

[0001] This utility model relates to the field of vehicle traction technology, and in particular to a trailer with a rotatable ball head. Background Technology

[0002] Currently, trailer hitches are becoming increasingly common in daily life, and their applications are becoming more widespread. For example, vehicles may need to be towed due to breakdowns during use, and some vehicles such as RVs, motorcycles, and speedboats need to be towed during transport and movement. Therefore, to facilitate towing, a trailer hitch assembly is installed on the front of the towed vehicle, and a compatible trailer hitch is installed on the rear of the towing vehicle.

[0003] Existing trailer trailers come in various forms, typically including a trailer arm and a trailer ball joint. Several trailer ball joints are provided to meet different usage needs. However, the trailer ball joints of existing trailer trailers are often fixed on the trailer arm, making it impossible to freely adjust their position and orientation, thus hindering flexible use. Even in some trailer trailers where the trailer ball joints can be relatively changed, the adjustment method is quite cumbersome, requiring the entire trailer ball joint to be disassembled, aligned, installed, and fixed, which is time-consuming and labor-intensive. Utility Model Content

[0004] Therefore, in view of the above problems, this utility model proposes a trailer trailer with an adjustable ball joint angle to meet different usage needs.

[0005] This utility model is achieved through the following technical solution.

[0006] A ball-head rotatable trailer hitch includes a trailer body and a trailer assembly disposed on the trailer body. The trailer assembly includes a connector and a trailer component. The connector has a rotating connection groove. One end of the trailer component has a rotating shaft that passes through the rotating connection groove, and the connector is rotatable relative to the rotating shaft. An anti-detachment device is provided between the rotating shaft and the connector to limit the axial displacement of the rotating shaft from disengaging from the rotating connection groove. The anti-detachment device includes a limiting ring groove disposed on the rotating shaft. One end of the connector has a communicating groove that communicates with the rotating connection groove. A locking block is disposed in the communicating groove, and the lower end of the locking block is embedded in the limiting ring groove to limit the axial displacement of the rotating shaft.

[0007] As a further improvement of this utility model, the lower end of the card block is provided with an arc-shaped boss that is adapted to the side wall of the limiting ring groove.

[0008] As a further improvement of this utility model, a plurality of first pin holes are evenly provided along the circumference of the rotating shaft, and a second pin hole communicating with the rotating connecting groove is provided on the side wall of the connector. A limiting pin is provided between the connector and the rotating shaft. The limiting pin passes through the first pin hole and the second pin hole, thereby restricting the rotation of the connector relative to the rotating shaft. A rotation positioning device is provided between the connector and the rotating shaft to position the rotating shaft relative to the connector.

[0009] As a further improvement of this utility model, the rotation positioning device includes a plurality of positioning grooves arranged in a circular array at the bottom of the rotation connecting groove. A floating member is provided between the bottom of the rotation connecting groove and the rotation shaft. The floating member is used to cooperate with the positioning groove. An elastic member is provided between the floating member and the rotation shaft to drive the floating member to abut against the positioning groove.

[0010] As a further improvement of this utility model, one end of the floating component is provided with an arc-shaped end, and the positioning groove is an arc-shaped positioning groove that cooperates with the arc-shaped end.

[0011] As a further improvement of this utility model, the end of the rotating shaft is provided with a mounting groove, the elastic element is disposed in the mounting groove, the elastic element is a compression spring, and the two ends of the compression spring are respectively connected to the bottom of the mounting groove and the floating element.

[0012] As a further improvement of this utility model, the trailer component is provided with at least one ball joint.

[0013] As a further improvement of this utility model, the trailer body includes a trailer cantilever and a trailer vertical arm disposed at the end of the trailer cantilever. The trailer vertical arm has a plurality of adjustment holes longitudinally formed. The connector has mounting holes adapted to the adjustment holes. The vertical arm is provided with an adjustment pin. The adjustment pin passes through the adjustment holes and the mounting holes to connect the connector.

[0014] As a further improvement of this utility model, a reinforcing rib is provided between the trailer cantilever and the trailer boom.

[0015] As a further improvement of this utility model, the trailer component is provided with a pull ring.

[0016] The beneficial effects of this utility model are as follows: In this utility model, the relative rotation of the trailer part and the connecting part is realized by the cooperation of the rotating shaft and the rotating connecting groove. This allows the trailer part to be rotated to change the ball head angle, thereby adapting to different trailer hook angles. The operation is simple and convenient, meeting a variety of usage needs. At the same time, the cooperation of the locking block and the limiting ring groove allows the trailer part to rotate freely in the circumference while reliably limiting the axial displacement of the rotating shaft. This prevents the trailer part from accidentally falling off during rotation, ensuring the safety of the structure. Moreover, the structure is relatively simple. Attached Figure Description

[0017] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of this utility model, wherein: Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is an exploded view of an embodiment of this utility model; Figure 3 This is a schematic diagram of the internal structure of an embodiment of this utility model; Figure 4 This corresponds to the embodiments of this utility model. Figure 3 Enlarged view of a portion of point A in the middle.

[0018] Numbered components in the diagram: Trailer body 1, Trailer cantilever 101, Trailer boom 102, Trailer assembly 2, Connector 201, Trailer component 202, Ball head 3, Pull ring 4, Rotating connection groove 5, Rotating shaft 6, Limiting ring groove 7, Connecting groove 8, Locking block 9, First pin hole 10, Second pin hole 11, Limiting pin 12, Positioning groove 13, Floating component 14, Elastic component 15, Adjusting hole 16, Mounting hole 17, Adjusting pin 18, Reinforcing rib 19. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0020] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0021] refer to Figures 1 to 4 The present invention discloses the following embodiments: A ball-head rotatable trailer hitch includes a trailer body 1 and a trailer assembly 2 disposed on the trailer body 1. The trailer assembly 2 includes a connector 201 and a trailer piece 202. The connector 201 is used to connect to the trailer body 1. The trailer piece 202 is provided with two ball heads 3 and a pull ring 4 for connecting (via a trailer hook) a trailer. The connector 201 has a rotating connection groove 5. One end of the trailer piece 202 is provided with a rotating shaft 6, which passes through the rotating connection groove 5. The connector 201 is rotatable relative to the rotating shaft 6. An anti-detachment device is provided between the rotating shaft 6 and the connector 201 to limit the axial displacement of the rotating shaft 6 from disengaging from the rotating connection groove 5. The anti-detachment device includes a limiting ring groove 7 disposed on the rotating shaft 6. One end of the 1 has a communicating groove 8 that communicates with the rotating connecting groove 5. A locking block 9 is provided in the communicating groove 8. The lower end of the locking block 9 is embedded in the limiting ring groove 7 to limit the axial displacement of the rotating shaft 6. In this embodiment, the relative rotation of the trailer part 202 and the connecting part 201 is realized by the cooperation of the rotating shaft 6 and the rotating connecting groove 5. This means that in this embodiment, only the angle of the ball head 3 needs to be changed by rotating the trailer part 202, so as to adapt to different trailer hook angles. The operation is simple and convenient and meets a variety of usage needs. At the same time, the cooperation of the locking block 9 and the limiting ring groove 7 allows the trailer part 202 to rotate freely in the circumference while reliably limiting the axial displacement of the rotating shaft 6, thereby preventing the trailer part 202 from accidentally falling off during rotation, ensuring the safety of the structure, and the structure is relatively simple.

[0022] During towing, when the vehicle bumps or brakes suddenly, the rotating shaft 6 will be subjected to severe vibration and axial impact. Based on this, the lower end of the locking block 9 is provided with an arc-shaped boss that matches the side wall of the limiting ring groove 7. The arc-shaped boss fits snugly against the arc-shaped outer wall of the limiting ring groove 7, thereby increasing the contact area to disperse stress and avoid stress concentration that could cause the locking block 9 to deform or the edge of the limiting ring groove 7 to crack.

[0023] Of course, after connecting the trailer, the trailer component 202 needs to be fixed to prevent it from rotating unexpectedly during driving due to road bumps or changes in towing force. This could cause abnormal wear at the connection between the ball head 3 and the trailer hook, or even cause the trailer component 202 to disengage from the trailer (trailer hook). Based on this, in this embodiment, a plurality of first pin holes 10 are evenly provided around the circumference of the rotating shaft 6 (4 or 6 in this embodiment). The side wall of the connector 201 is provided with a second pin hole 11 that communicates with the rotating connecting groove 5. A limiting pin 12 is provided between the connector 201 and the rotating shaft 6. The limiting pin 12 passes through the first pin hole 10 and the second pin hole 11, thereby restricting the connector 201 from rotating relative to the rotating shaft 6 to lock the trailer component 202 and achieve rigid mechanical locking to avoid the risk of the trailer component 202 (ball head 3) rotating during driving.

[0024] In this embodiment, since multiple first pin holes 10 are provided around the rotating shaft 6, and after rotating the trailer part 202, it is necessary to control the first pin holes 10 and the second pin holes 11 to be aligned in order to ensure that the limiting pin 12 is inserted, a rotation positioning device is provided between the connector 201 and the rotating shaft 6 to make the rotating shaft 6 rotate and position relative to the connector 201.

[0025] The rotation positioning device includes a plurality of positioning slots 13 arranged in a circular array at the bottom of the rotation connecting groove 5. A floating member 14 is provided between the bottom of the rotation connecting groove 5 and the rotation shaft 6. The floating member 14 is used to cooperate with the positioning slots 13. An elastic member 15 is provided between the floating member 14 and the rotation shaft 6 to drive the floating member 14 to abut against the positioning slot 13. In the initial state, the floating member 14 is aligned with one of the positioning slots 13, and the end of the floating member 14 is embedded in the positioning slot 13. The trailer 2 is rotated. During the process of 02, the floating member 14 is subjected to force to overcome the elasticity of the elastic member 15 and disengage from the positioning groove 13. Then it moves with the rotating shaft 6 until it encounters the next positioning groove 13. Then, under the elastic action of the elastic member 15, it returns to the center and collides with the positioning groove 13 during the return, thus making a clicking sound. At this time, the operator can know that the rotation is in place, that is, the first pin hole 10 and the second pin hole 11 are aligned, which facilitates the installation of the limiting pin 12, achieves efficient locking, and can bring a better user experience.

[0026] Of course, since the floating component 14 needs to be embedded in the positioning groove 13, the trailer component 202 needs to disengage the floating component 14 from the positioning groove 13 during rotation in order to achieve rotation. Based on this, one end of the floating component 14 is provided with an arc-shaped end, and the positioning groove 13 is an arc-shaped positioning groove 13 that cooperates with the arc-shaped end, thereby preventing the floating component 14 from getting stuck and making the rotation smoother.

[0027] Specifically, in this embodiment, the rotating shaft 6 has an installation groove at its end, and the elastic element 15 is disposed in the installation groove. The elastic element 15 is a compression spring, and the two ends of the compression spring are respectively connected to the bottom of the installation groove and the floating element 14. The structure is simple and convenient for processing, production and installation.

[0028] The trailer body 1 includes a trailer cantilever 101 and a trailer support arm 102 disposed at the end of the trailer cantilever 101. The trailer cantilever 101 is used to connect with a tractor. The trailer support arm 102 has a plurality of adjustment holes 16 longitudinally formed. The connector 201 has mounting holes 17 adapted to the adjustment holes 16. The support arm is provided with an adjustment pin 18, which passes through the adjustment holes 16 and the mounting holes 17 to connect the connector 201. The trailer assembly 2 can be installed on the adjustment holes 16 at different heights according to actual needs to meet the adaptation requirements of different trailer scenarios. When it is necessary to assemble and use, it is only necessary to align the mounting holes 17 on the connector 201 with the adjustment holes 16 on the trailer support arm 102, and then control the adjustment pin 18 to pass through the mounting holes 17 and the adjustment holes 16 in sequence to fix the trailer assembly 2 on the adjustment support arm.

[0029] In addition, in this embodiment, a reinforcing rib 19 is provided between the trailer cantilever 101 and the trailer boom 102.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ball-head rotatable trailer hitch, comprising a trailer body (1) and a trailer assembly (2) disposed on the trailer body (1), characterized in that: The trailer assembly (2) includes a connector (201) and a trailer (202). The connector (201) has a rotating connection groove (5). One end of the trailer (202) is provided with a rotating shaft (6). The rotating shaft (6) passes through the rotating connection groove (5) and the connector (201) can rotate relative to the rotating shaft (6). An anti-detachment device is provided between the rotating shaft (6) and the connector (201) to limit the axial displacement of the rotating shaft (6) from disengaging from the rotating connection groove (5). The anti-detachment device includes a limiting ring groove (7) provided on the rotating shaft (6). One end of the connector (201) has a communicating groove (8) that communicates with the rotating connection groove (5). A locking block (9) is provided in the communicating groove (8). The lower end of the locking block (9) is embedded in the limiting ring groove (7) to limit the axial displacement of the rotating shaft (6).

2. A rotatable ball-head trailer according to claim 1, characterized in that: The lower end of the card block (9) is provided with an arc-shaped boss that is adapted to the side wall of the limiting ring groove (7).

3. A rotatable ball-head trailer according to claim 1, characterized in that: A plurality of first pin holes (10) are evenly provided around the circumference of the rotating shaft (6). The side wall of the connector (201) is provided with a second pin hole (11) that communicates with the rotating connecting groove (5). A limiting pin (12) is provided between the connector (201) and the rotating shaft (6). The limiting pin (12) passes through the first pin hole (10) and the second pin hole (11), thereby restricting the connector (201) from rotating relative to the rotating shaft (6). A rotation positioning device is provided between the connector (201) and the rotating shaft (6) to position the rotating shaft (6) relative to the connector (201).

4. A rotatable ball-head trailer according to claim 3, characterized in that: The rotation positioning device includes a plurality of positioning grooves (13) arranged in a circular array at the bottom of the rotation connecting groove (5). A floating member (14) is provided between the bottom of the rotation connecting groove (5) and the rotation shaft (6). The floating member (14) is used to cooperate with the positioning groove (13). An elastic member (15) is provided between the floating member (14) and the rotation shaft (6) for driving the floating member (14) to abut against the positioning groove (13).

5. A rotatable ball-head trailer according to claim 4, characterized in that: The floating component (14) has an arc-shaped end, and the positioning groove (13) is an arc-shaped positioning groove (13) that cooperates with the arc-shaped end.

6. A rotatable ball-head trailer according to claim 5, characterized in that: The rotating shaft (6) has an installation groove at its end, and the elastic element (15) is disposed in the installation groove. The elastic element (15) is a compression spring, and the two ends of the compression spring are respectively connected to the bottom of the installation groove and the floating element (14).

7. A rotatable ball-head trailer according to claim 1, characterized in that: The trailer component (202) is provided with at least one ball joint (3).

8. A rotatable ball-head trailer according to claim 1, characterized in that: The trailer body (1) includes a trailer cantilever (101) and a trailer vertical arm (102) disposed at the end of the trailer cantilever (101). The trailer vertical arm (102) has a plurality of adjustment holes (16) longitudinally formed. The connector (201) has mounting holes (17) adapted to the adjustment holes (16). The vertical arm is provided with an adjustment pin (18). The adjustment pin (18) passes through the adjustment holes (16) and the mounting holes (17) to connect the connector (201).

9. A ball-head rotatable trailer hitch according to claim 8, characterized in that: A reinforcing rib (19) is provided between the trailer cantilever (101) and the trailer boom (102).

10. A ball-head rotatable trailer hitch according to claim 1, characterized in that: The trailer component (202) is provided with a pull ring (4).

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