A tractor-trailer traction device

Abstract

This utility model discloses a tractor-trailer traction device, including a swing-type drawbar connected to the rear axle housing and cylinder bracket by bolts. Inside the swing-type drawbar, a swing-type drawbar is fixed by a pin and its left-right swing amplitude is limited. A drawbar head, connected to the cylinder bracket by a pin, is located above the swing-type drawbar. A fixing pin is installed at the front end inside the swing-type drawbar, connecting the front end of the swing-type drawbar to the swing-type drawbar. The front end of the swing-type drawbar has at least two pin holes. Two limiting pins are installed at the rear end inside the swing-type drawbar, limiting the left-right swing amplitude of the swing-type drawbar. The tractor-trailer traction device provided by this utility model facilitates adjustment of the length and swing range of the swing-type drawbar, allowing users to adjust the appropriate traction distance under different operating conditions and improving the equipment's adaptability to complex environments.

Description

Technical Field

[0001] This utility model relates to a tractor trailer traction device, belonging to the field of trailer traction technology. Background Technology

[0002] Trailer towing devices are important components used to connect tractors and various towing equipment (such as agricultural implements, trailers, etc.). The common types of trailer towing devices are mainly swing arm type and towing plate type.

[0003] Swing lever type: Used for towed implements. The rear end of the drawbar is connected to the implement via a tow pin. The drawbar can swing laterally, making it convenient to attach implements. During operation, the drawbar can swing left and right. Tow plate type: Fixed to the rear of the tractor, it is connected to the implement via a tow clip, tow pin, and other means.

[0004] In traditional swing arm towing devices, the length of the towing arm and the swing range are relatively fixed, which means that users cannot flexibly adjust the appropriate towing distance according to different working environments. The equipment has poor adaptability to complex environments and is not suitable for non-self-propelled harvester operations such as spray tanks.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] This utility model addresses the shortcomings of the prior art by providing a tractor-trailer traction device that facilitates adjustment of the length and swing range of the swing arm, allowing users to adjust the appropriate traction distance under different operating conditions and improving the equipment's adaptability to complex environments.

[0007] To solve the above technical problems, the present invention adopts the following technical solution:

[0008] A tractor-trailer traction device includes a swing-type traction frame connected to a rear axle housing and a cylinder bracket by bolts. Inside the swing-type traction frame, a swing-type traction rod is installed, which is fixed by a pin and limits the left and right swing amplitude. A traction head is provided above the swing-type traction rod and connected to the cylinder bracket by a pin.

[0009] Furthermore, the swing-type traction frame has a square structure. The swing-type traction frame is fixed to the bottom of the rear end of the rear axle housing by bolts, and is also fixed between two hydraulic cylinder brackets by bolts. The two hydraulic cylinder brackets are fixed to both sides of the rear end of the rear axle housing.

[0010] Furthermore, a fixing pin is installed at the front end of the pendulum traction frame. The fixing pin is set vertically and connects the front end of the pendulum traction rod to the pendulum traction frame.

[0011] Furthermore, two limit pins are installed at the rear end of the pendulum traction frame. The limit pins are set vertically and limit the left and right swing amplitude of the pendulum traction rod.

[0012] Furthermore, the front end of the swing-type traction rod is provided with at least two pin holes.

[0013] Furthermore, a traction pin A is installed on the rear end of the swing-type traction rod, and the traction pin A is connected to the agricultural auxiliary tool.

[0014] Furthermore, the front end of the traction head is connected to the hydraulic cylinder bracket via two traction cross pins set vertically.

[0015] Furthermore, a traction pin B is installed at the rear end of the traction head, and the traction pin B is connected to the agricultural auxiliary implement.

[0016] Furthermore, both cylinder supports are hinged to their opposite outer sides with suspension booms.

[0017] Furthermore, a lifter is installed above the rear end of the rear axle housing.

[0018] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0019] The front end of the swing-type traction rod is fixed to the swing-type traction frame by a fixing pin, and the left and right swing range is limited by a limiting pin in the middle. It is suitable for non-self-propelled harvesters such as spray tanks. The fixing pin and the limiting pin are integrated on the swing-type traction frame, which makes it easy to adjust the length and swing range of the swing-type traction rod. This allows users to adjust the appropriate traction distance in different working environments and improves the equipment's adaptability to complex environments.

[0020] The swing-type traction frame and the traction head are integrated between two hydraulic cylinder brackets. The swing-type traction frame is fastened to the hydraulic cylinder brackets with bolts, which greatly improves the strength of the hydraulic cylinder brackets.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural view of the present invention;

[0023] Figure 2 This is a three-dimensional view of the structure of this utility model in another direction;

[0024] Figure 3 This is a schematic diagram showing the connection between the pendulum traction rod and the pendulum traction frame;

[0025] Figure 4 This is a schematic diagram of a pendulum traction rod.

[0026] Figure 5This is a schematic diagram showing the connection between the traction head and the hydraulic cylinder bracket.

[0027] In the diagram, 1-cylinder bracket, 2-rear axle housing, 3-swing traction frame, 4-swing traction rod, 5-fixed pin, 6-limit pin, 7-pin hole, 8-traction vertical pin A, 9-traction horizontal pin, 10-traction head, 11-traction vertical pin B, 12-suspension boom. Detailed Implementation

[0028] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0029] like Figures 1-5 As shown in the figure, this utility model provides a tractor trailer traction device, including a swing-type traction frame 3 connected to the rear axle housing 2 and the cylinder bracket 1 by bolts. Inside the swing-type traction frame 3, there is a swing-type traction rod 4 fixed by a pin and limiting the left and right swing amplitude. A traction head 10 connected to the cylinder bracket 1 by a pin is provided above the swing-type traction rod 4.

[0030] The swing-type traction frame 3 has a square structure. The swing-type traction frame 3 is fixed to the bottom of the rear end of the rear axle housing 2 by bolts, and is also fixed between the two hydraulic cylinder brackets 1 by bolts. The two hydraulic cylinder brackets 1 are fixed to the two sides of the rear end of the rear axle housing 2.

[0031] A fixing pin 5 is installed at the front end of the pendulum traction frame 3. The fixing pin 5 is vertically arranged and connects the front end of the pendulum traction rod 4 to the pendulum traction frame 3. Two limiting pins 6 are installed at the rear end of the pendulum traction frame 3. The limiting pins 6 are vertically arranged and are used to limit the left and right swing amplitude of the pendulum traction rod 4.

[0032] The pendulum traction rod 4 has at least two pin holes 7 at its front end, making its installation position adjustable. This allows for easy adjustment of the extension length and swing range of the pendulum traction rod 4, facilitating users to adjust the appropriate traction distance under different operating conditions. A traction pin A8 is installed at the rear end of the pendulum traction rod 4, and the traction pin A8 is connected to the agricultural implement.

[0033] The front end of the traction head 10 is connected to the cylinder bracket 1 through two traction horizontal pins 9 set at the top and bottom. The traction head 10 is fixedly installed between the two cylinder brackets 1 through the two traction horizontal pins 9. The rear end of the traction head 10 is equipped with a traction vertical pin B11, which is connected to the agricultural auxiliary tool.

[0034] Both cylinder brackets 1 are hinged to each other on their outer sides.

[0035] A lifter is installed above the rear end of the rear axle housing 2.

[0036] The specific working principle of this utility model is as follows:

[0037] The front end of the swing-type traction rod 4 is fixed to the swing-type traction frame 3 by a fixing pin 5, and the left and right swing amplitude is limited by a limiting pin 6 in the middle. It is suitable for non-self-propelled harvesters such as sprayers. The fixing pin 5 and the limiting pin 6 are integrated on the swing-type traction frame 3, which makes it easy to adjust the length and swing range of the swing-type traction rod 4, and makes it convenient for users to adjust the appropriate traction distance in different working environments.

[0038] The swing-type traction frame 3 and the traction head 10 are integrated between the two hydraulic cylinder brackets 1. The swing-type traction frame 3 is fastened to the hydraulic cylinder brackets 1 with bolts, which greatly improves the strength of the hydraulic cylinder brackets 1.

[0039] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A tractor trailer hitching device characterised in that: It includes a swing-type traction frame (3) that is connected to the rear axle housing (2) and the cylinder bracket (1) by bolts. Inside the swing-type traction frame (3) is a swing-type traction rod (4) that is fixed by a pin and limits the left and right swing amplitude. Above the swing-type traction rod (4) is a traction head (10) that is connected to the cylinder bracket (1) by a pin.

2. A tractor trailer hitching device as claimed in claim 1 wherein: The swing-type traction frame (3) is a square structure. The swing-type traction frame (3) is fixed to the bottom of the rear end of the rear axle housing (2) by bolts, and is fixed between the two cylinder brackets (1) by bolts. The two cylinder brackets (1) are fixed to the two sides of the rear end of the rear axle housing (2).

3. A tractor trailer hitching device as claimed in claim 1, characterised in that: The pendulum traction frame (3) has a fixing pin (5) installed at the front end inside. The fixing pin (5) is set vertically and connects the front end of the pendulum traction rod (4) to the pendulum traction frame (3).

4. A tractor trailer hitch according to claim 3 wherein: The pendulum traction frame (3) has two limit pins (6) installed at the rear end. The limit pins (6) are set vertically and limit the swing amplitude of the pendulum traction rod (4).

5. A tractor-trailer traction device as described in claim 4, characterized in that: The pendulum traction rod (4) has at least two pin holes (7) at its front end.

6. A tractor trailer hitching device as claimed in claim 1, characterised in that: The pendulum traction rod (4) is equipped with a traction pin A (8) at the rear end, and the traction pin A (8) is connected to the agricultural auxiliary tool.

7. A tractor trailer hitching device as claimed in claim 1, characterised in that: The front end of the traction head (10) is connected to the cylinder bracket (1) through two traction cross pins (9) set at the top and bottom.

8. A tractor trailer hitching device as claimed in claim 7, characterised in that: The rear end of the traction head (10) is equipped with a traction pin B (11), which is connected to the agricultural auxiliary tool.

9. A tractor trailer hitching device as claimed in claim 1, characterised in that: Both cylinder brackets (1) are hinged to the outer sides of each other with a suspension boom (12).

10. A tractor trailer hitching device as claimed in claim 1, characterized in that: A lifter is installed above the rear end of the rear axle housing (2).

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