Traction head connecting device for tractor

Abstract

The utility model provides a traction head connecting device for a tractor, which comprises a traction longitudinal beam, a pair of connecting seats are symmetrically arranged at the top and the bottom of the traction longitudinal beam, a pair of reinforcing plates are symmetrically arranged on the opposite inner walls of the pair of connecting seats, and a pin shaft penetrating through the pair of reinforcing plates and a traction head is arranged in the pair of connecting seats. According to the design, the traction head is connected with the pin shaft, so that the traction head rotates around the connecting seat along the pin shaft; and a plurality of reserved threaded holes which are connected with external bolts and are used for fixing the traction head are formed in the side wall of the traction longitudinal beam. The traction longitudinal beam is reasonable in structure, can be fixedly connected with the traction head and also can be rotationally connected with the traction head, and is time-saving, labor-saving and high in replacement efficiency.

Description

Technical Field

[0001] The utility model relates to a towing head, and specifically, to a connecting device for a towing head of a tractor. Background Technique

[0002] A tractor is a self-propelled power machine used to tow and drive working machinery to complete various mobile operations, and can also be used as a fixed operation power. It consists of systems or devices such as an engine, transmission, running, steering, hydraulic suspension, power output, electrical instrument, driving control, and towing. Among them, the towing head connecting device is an important part of the tractor.

[0003] In the prior art, when the towing head connecting device is in use, the connection form between the towing head and the towing longitudinal beam in the towing head connecting device is relatively single, either fixed or a slipknot, with a single function. When the towing head needs to be replaced, the towing longitudinal beam needs to be replaced together. Among them, the towing head is used to connect the tractor, and the towing longitudinal beam is connected to the harrow frame through a towing cross beam. In the actual operation process, it may cause bad effects, the towing longitudinal beam cannot be adjusted in time, and the disassembly is cumbersome. Moreover, it is necessary to contact and purchase again. Whether it is the manufacturer or the customer, it is time-consuming and laborious, greatly reducing the replacement efficiency. Now there is an urgent need for a connecting device for a towing head of a tractor to solve the above problems. Content of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a connecting device for a towing head of a tractor to solve the problems put forward in the above background technique. The structure of the utility model is reasonable, and it can not only achieve a fixed connection with the towing head but also achieve a rotational connection, saving time and effort and having a high replacement efficiency.

[0005] In order to achieve the above purpose, the utility model is realized through the following technical solutions: A connecting device for a towing head of a tractor, comprising:

[0006] A towing longitudinal beam, with a pair of connecting seats symmetrically arranged at the top and bottom of the towing longitudinal beam. A pair of reinforcing plates are symmetrically arranged on the opposite inner walls of the pair of connecting seats. A pin shaft passing through the pair of reinforcing plates and the towing head is arranged inside the pair of connecting seats;

[0007] A plurality of reserved threaded holes for connecting with external bolts to fix the towing head are arranged on the side wall of the towing longitudinal beam.

[0008] Furthermore, the towing longitudinal beam is a rectangular tube, and a sealing plate is arranged at one end of the towing longitudinal beam close to the reinforcing plate.

[0009] Further, the towing head includes a first towing head and a second towing head. The first towing head includes a first towing plate disposed on the side wall of the pin shaft. Inside the first towing plate, there is a first towing plate sleeve connected to the pin shaft and positioned between a pair of reinforcing plates. On one side of the top of the first towing head away from the pin shaft, a first reinforcing sleeve is penetrated. The first towing head is rotatably connected to the connecting seat through the pin shaft.

[0010] Further, the second towing head includes a second towing plate disposed on the side wall of the pin shaft. Inside the second towing plate, there is a second towing plate sleeve connected to the pin shaft and positioned between a pair of reinforcing plates. On one side of the top of the second towing head away from the pin shaft, a second reinforcing sleeve is penetrated. On one side of the second towing plate close to the towing longitudinal beam, a pair of extension fixing plates connected to the side wall of the towing longitudinal beam are symmetrically arranged. The extension fixing plates correspond to the reserved threaded holes. The second towing head is connected to the reserved threaded holes through external bolts passing through the extension fixing plates.

[0011] Further, through holes are provided in both the pair of connecting seats and the pair of reinforcing plates. The pin shaft penetrates through the through holes and is inserted into the towing plate sleeve.

[0012] Further, there are three reserved threaded holes. The three reserved threaded holes are distributed in an isosceles triangle. Through holes for connecting with the external bolts are provided at the positions of the extension fixing plates corresponding to the reserved threaded holes.

[0013] Further, an adjusting plate is provided on the side wall of the towing longitudinal beam, and a plurality of adjusting holes are provided on the side wall of the adjusting plate.

[0014] Further, the reserved threaded holes communicate with the inner wall of the towing longitudinal beam, and a rain leakage hole communicating with the inner wall of the towing longitudinal beam is provided at the bottom of the towing longitudinal beam.

[0015] According to a towing head connection device for a tractor of the present invention, by connecting the towing head with the pin shaft, the towing head rotates around the connecting seat along the pin shaft, realizing the rotational connection of the towing head. By connecting the reserved threaded holes with the external bolts, the external bolts penetrate through the towing head and are connected with the reserved threaded holes on the towing longitudinal beam, thereby fixing between the towing head and the towing longitudinal beam, playing a role in facilitating the fixing of the towing head, thus enabling both fixed connection and rotational connection with the towing head, achieving multi-functionality, avoiding the time-consuming and laborious need to replace the towing longitudinal beam together when replacing the towing head, and thus improving the replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1Schematic structural diagram of a towing head connection device for a tractor according to an embodiment of the present utility model;

[0018] Figure 2 Bottom-up sectional view of a towing head connection device for a tractor according to an embodiment of the present utility model;

[0019] Figure 3 Schematic structural diagram of a first towing head in a towing head connection device for a tractor according to an embodiment of the present utility model;

[0020] Figure 4 Schematic structural diagram of a towing head connection device for a tractor according to another embodiment of the present utility model;

[0021] Figure 5 Bottom-up sectional view of a towing head connection device for a tractor according to another embodiment of the present utility model;

[0022] Figure 6 Schematic structural diagram of a first towing head in a towing head connection device for a tractor according to another embodiment of the present utility model;

[0023] Figure 7 Right-side sectional view of a towing longitudinal beam in a towing head connection device for a tractor according to an embodiment of the present utility model;

[0024] In the figure: 1. First towing head; 101. First towing plate; 102. First reinforcing sleeve; 103. First towing plate sleeve; 1'. Second towing head; 101'. Second towing plate; 102'. Second reinforcing sleeve; 103'. Second towing plate sleeve; 104'. Extension fixing plate; 1041'. Through hole; 2. Reinforcing plate; 3. Pin shaft; 4. Connection seat; 41. Mounting hole; 5. Towing longitudinal beam; 51. Reserved threaded hole; 52. Rain leakage hole; 6. Sealing plate; 7. Adjusting plate; 71. Adjusting hole. Detailed implementation manners

[0025] To make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with the detailed implementation manners.

[0026] As Figure 1 shown, the present utility model provides a technical solution: a towing head connection device for a tractor, including:

[0027] A towing longitudinal beam 5, with a pair of connection seats 4 symmetrically arranged at the top and bottom of the towing longitudinal beam 5. A pair of reinforcing plates 2 are symmetrically arranged on the opposite inner walls of the pair of connection seats 4. A pin shaft 3 passing through the pair of reinforcing plates 2 and the towing head is arranged inside the pair of connection seats 4. This design enables the towing head to rotate around the connection seat 4 along the pin shaft 3 by connecting the towing head with the pin shaft 3;

[0028] A plurality of reserved threaded holes 51 for connecting with external bolts to fix the towing head are provided on the side wall of the towing longitudinal beam 5. By using the reserved threaded holes 51 to connect with the external bolts, the external bolts penetrate through the towing head and are connected with the reserved threaded holes 51 on the towing longitudinal beam 5, so as to fix the towing head and the towing longitudinal beam 5, which plays a role in facilitating the fixing of the towing head. Thus, it can not only be fixedly connected with the towing head but also be rotatably connected, realizing multi-functionality, avoiding the time-consuming and laborious replacement of the towing longitudinal beam 5 when replacing the towing head, and thus improving the replacement efficiency.

[0029] Refer to Figure 1 and Figure 4 , the towing longitudinal beam 5 is a rectangular pipe, and a sealing plate 6 is provided at one end of the towing longitudinal beam 5 close to the reinforcing plate 2. This design facilitates the sealing of the end of the towing longitudinal beam 5 by using the sealing plate 6.

[0030] Refer to Figure 1 , Figure 2 and Figure 3 , the towing head includes a first towing head 1 and a second towing head 1'. The first towing head 1 includes a first towing plate 101 provided on the side wall of the pin shaft 3. A first towing plate sleeve 103 connected to the pin shaft 3 and placed between a pair of reinforcing plates 2 is arranged inside the first towing plate 101. A first reinforcing sleeve 102 is penetrated and arranged on one side of the top of the first towing head 1 far from the pin shaft 3. The first towing head 1 is rotatably connected with the connecting seat 4 through the pin shaft 3. This design facilitates the rotation of the first towing head 1 around the connecting seat 4 through the pin shaft 3 by using the pin shaft 3 to pass through the first towing plate sleeve 103.

[0031] Refer to Figure 4 , Figure 5 and Figure 6 The second towing head 1' includes a second towing plate 101' provided on the side wall of the pin shaft 3. A second towing plate sleeve 103' connected to the pin shaft 3 and placed between a pair of reinforcing plates 2 is arranged inside the second towing plate 101'. A second reinforcing sleeve 102' is penetrated and arranged on one side of the top of the second towing head 1' far from the pin shaft 3. A pair of extension fixing plates 104' connected to the side wall of the towing longitudinal beam 5 are symmetrically arranged on one side of the second towing plate 101' close to the towing longitudinal beam 5. The extension fixing plates 104' correspond to the reserved threaded holes 51. The second towing head 1' is connected with the reserved threaded holes 51 through the external bolts penetrating through the extension fixing plates 104'. This design facilitates the positioning connection between the second towing head 1' and the connecting seat 4 through the pin shaft 3 by using the pin shaft 3 to pass through the second towing plate sleeve 103', and then uses the external bolts to pass through the extension fixing plates 104' and connect with the reserved threaded holes 51, thus completing the connection and fixing between the second towing head 1' and the towing longitudinal beam 5.

[0032] Reference Figure 1 and Figure 3 Both a pair of connecting seats 4 and a pair of reinforcing plates 2 are internally provided with through mounting holes 41. The pin shaft 3 passes through the mounting holes 41 and is inserted into the inside of the towing plate sleeve. This design improves the rationality of the design by using the mounting holes 41.

[0033] Reference Figure 1 、 Figure 4 and Figure 5 There are three reserved threaded holes 51. The three reserved threaded holes 51 are distributed in an isosceles triangle. Through holes 1041' for connecting with external bolts are provided at positions corresponding to the reserved threaded holes 51 on the extended fixing plate 104'. This design facilitates inserting the external bolts into the reserved threaded holes 51 on the towing longitudinal beam 5 through the through holes 1041' to press the extended fixing plate 104', thereby connecting and fixing between the second towing head 1' and the towing longitudinal beam 5. By distributing the three reserved threaded holes 51 in an isosceles triangle, the connection is more firm and stable when the second towing head 1' is stressed by using the principle of triangle stability, and it will not loosen or even fall off, improving the stability of the connection part.

[0034] Reference Figure 2 and Figure 5 An adjusting plate 7 is provided on the side wall of the towing longitudinal beam 5, and a plurality of adjusting holes 71 are provided on the side wall of the adjusting plate 7. This design facilitates adjusting the connection position between the towing longitudinal beam 5 and the towing cross beam by using the adjusting holes 71 on the adjusting plate 7.

[0035] Reference Figure 7 The reserved threaded holes 51 communicate with the inner wall of the towing longitudinal beam 5, and a rain leakage hole 52 communicating with the inner wall of the towing longitudinal beam 5 is provided at the bottom of the towing longitudinal beam 5. When the second towing head 1' is disassembled and replaced with the first towing head 1, since there is no extended fixing plate 104' at this time and the reserved threaded holes 51 are exposed to the air, considering that the reserved threaded holes 51 may let water in and flow into the inside of the towing longitudinal beam 5 and cannot be discharged when it rains, a rain leakage hole 52 is opened at the bottom of the towing longitudinal beam 5 to prevent the towing longitudinal beam 5 from accumulating water and being corroded, and to improve the service life.

[0036] Reference Figures 1 - 3 As an embodiment of the present utility model: The staff passes the pin shaft 3 through the mounting holes 41 on a pair of connecting seats 4 and a pair of reinforcing plates 2 and passes through the towing plate sleeve 103 on the first towing head 1, so as to facilitate the first towing head 1 to rotate around the connecting seat 4 through the pin shaft 3, realizing the rotational connection of the first towing head 1.

[0037] Reference Figures 4 - 7, as another embodiment of the present utility model: The staff passes the pin shaft 3 through the mounting holes 41 on a pair of connecting seats 4 and a pair of reinforcing plates 2 and through the second traction plate sleeve 103' on the second traction head 1', so as to facilitate the positioning connection between the second traction head 1' and the connecting seat 4. Then, an external bolt is used to pass through the through hole 1041' on the extended fixing plate 104' and is connected to the reserved threaded hole 51 on the traction longitudinal beam 5, thereby completing the connection and fixation between the second traction head 1' and the traction longitudinal beam 5, realizing the fixed connection of the second traction head 1'. When installing the second traction head 1', the first traction head 1 needs to be removed by the pin shaft 3, and then the second traction head 1' is installed. The first traction head 1 and the second traction head 1' can be replaced with each other for installation, so that the traction head connection device can be fixedly connected to the traction head and can also be rotatably connected, realizing multi-functionality, avoiding the time-consuming and laborious replacement of the traction longitudinal beam 5 when replacing the traction head, thereby improving the replacement efficiency and the practicability of the present utility model.

[0038] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0039] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tractor traction head connection device, characterized in that: include: A traction longitudinal beam (5), wherein a pair of connecting seats (4) are symmetrically arranged at the top and bottom of the traction longitudinal beam (5), a pair of reinforcing plates (2) are symmetrically arranged on the opposite inner walls of the pair of connecting seats (4), and a pin shaft (3) penetrating the pair of reinforcing plates (2) and the traction head is arranged inside the pair of connecting seats (4); The side wall of the traction longitudinal beam (5) is provided with a plurality of reserved threaded holes (51) connected with external bolts to fix the traction head.

2. A tractor traction head connection device according to claim 1, characterized in that: The traction longitudinal beam (5) is a rectangular tube, and a sealing plate (6) is provided at one end of the traction longitudinal beam (5) close to the reinforcing plate (2).

3. A tractor traction head connection device according to claim 1, characterized in that: The traction head comprises a first traction head (1) and a second traction head (1'); the first traction head (1) comprises a first traction plate (101) arranged on the side wall of the pin shaft (3); a first traction plate sleeve (103) connected to the pin shaft (3) and placed between a pair of reinforcing plates (2) is arranged inside the first traction plate (101); a first reinforcing sleeve (102) is penetrated through a side of the top of the first traction head (1) away from the pin shaft (3); and the first traction head (1) is rotatably connected to a connecting seat (4) via the pin shaft (3).

4. A tractor traction head connection device according to claim 3, characterized in that: The second traction head (1') comprises a second traction plate (101') arranged on the side wall of the pin shaft (3); a second traction plate sleeve (103') connected to the pin shaft (3) and placed between the pair of reinforcement plates (2) is arranged inside the second traction plate (101'); a second reinforcement sleeve (102') is penetrated through the side of the top of the second traction head (1') away from the pin shaft (3); a pair of extended fixing plates (104') connected to the side wall of the traction longitudinal beam (5) are symmetrically arranged on the side of the second traction plate (101') close to the traction longitudinal beam (5); the extended fixing plates (104') correspond to the reserved threaded holes (51); and the second traction head (1') is connected to the reserved threaded holes (51) by external bolts passing through the extended fixing plates (104').

5. A tractor traction head connection device according to claim 3 or 4, characterized in that: A through mounting hole (41) is provided inside the pair of connecting seats (4) and the pair of reinforcing plates (2), and the pin shaft (3) passes through the mounting hole (41) and is inserted into the interior of the traction plate sleeve.

6. A tractor traction head connection device according to claim 4, characterized in that: There are three reserved threaded holes (51) distributed in an isosceles triangle. A through hole (1041') connected to an external bolt is provided at a position of the extended fixing plate (104') corresponding to the reserved threaded holes (51).

7. A tractor traction head connection device according to claim 1, characterized in that: The side wall of the traction longitudinal beam (5) is provided with an adjustment plate (7), and the side wall of the adjustment plate (7) is provided with a plurality of adjustment holes (71).

8. A tractor traction head connection device according to claim 2, characterized in that: The reserved threaded hole (51) is connected to the inner wall of the traction longitudinal beam (5), and a rain leakage hole (52) connected to the inner wall of the traction longitudinal beam (5) is provided at the bottom of the traction longitudinal beam (5).

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