Riding type four-wheel-drive mini-tiller

Abstract

The utility model provides a riding type four-wheel-drive mini-tiller, and belongs to the technical field of mini-tillers. The brake structure solves the problem that an existing brake structure of the mini-tiller is poor in brake effect. The riding type four-wheel-drive mini-tiller comprises a frame, a front gearbox and a rear gearbox, the front gearbox and the rear gearbox are arranged on the frame, an output shaft of the front gearbox is in transmission connection with an input shaft of the rear gearbox through a universal coupling, a brake disc is arranged on the universal coupling, a brake capable of clamping the brake disc is arranged on the frame, and the brake is driven by a brake control assembly. According to the mini-tiller, the disc brake is adopted, the brake disc is directly exposed in air, heat is rapidly dissipated through air convection and radiation, the heat attenuation risk is low, and the mini-tiller is particularly suitable for frequent braking or high-strength working conditions; the brake directly clamps the brake disc, the mechanical transmission efficiency is high, and the braking effect is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the micro plough machine technical field relates to a kind of riding type four-wheel drive micro plough. BACKGROUND

[0002] In the current agricultural machinery, four-wheel drive micro plough is often used to open ditch, cultivate soil and other work, and a brake mechanism is usually provided on the four-wheel drive micro plough. For example, a brake mechanism disclosed in a patent with the authorization announcement number CN214788858U includes a seat disc, a cover disc, a brake drum, a brake lever and brake pads. The seat disc is fixedly connected to the rear box body by bolts. The cover disc is fixedly covered on the seat disc by bolts. The space covered by the cover disc and the seat disc can accommodate the brake drum, the brake lever and the brake pads. The brake drum is fixedly connected to the transmission shaft of the rear gearbox. The two brake pads are connected by a return spring. The left end of each brake pad is rotatably connected to the cover disc by a rotating column. The brake lever is integrally formed with a protrusion. When the brake lever rotates, the protrusion can press the brake pad until the brake pad tightly contacts the brake.

[0003] The above brake mechanism is a drum brake. The drum brake assembly is enclosed in the seat disc and the cover disc. The brake pads can be checked or replaced only after the drum brake assembly is disassembled, which increases the maintenance time and cost. The drum brake has a closed structure. Heat is difficult to quickly dissipate. When frequent braking or high-intensity braking (such as long downhill, heavy load) occurs, the heat generated by friction will accumulate, resulting in a decrease in braking efficiency (thermal decay). In severe cases, it may cause brake failure, and the brake effect is poor. UTILITY MODEL CONTENTS

[0004] The utility model aims to solve the above problems existing in the prior art and provides a riding type four-wheel drive micro plough with good brake effect.

[0005] The purpose of the utility model can be achieved by the following technical solutions:

[0006] The riding type four-wheel drive micro plough includes a vehicle frame, a front gearbox and a rear gearbox arranged on the vehicle frame. The output shaft of the front gearbox is drivingly connected to the input shaft of the rear gearbox through a universal joint. A brake disc is arranged on the universal joint. A brake is arranged on the vehicle frame and can clamp the brake disc. The brake is driven by a brake control assembly.

[0007] The micro plough uses a disc brake. The brake disc is directly exposed to the air. Heat is quickly dissipated through air convection and radiation. The risk of thermal decay is low, especially suitable for frequent braking or high-intensity working conditions. The brake directly clamps the brake disc. The mechanical transmission efficiency is high, and the brake effect is good.

[0008] In the above-mentioned riding type four-wheel drive mini-cultivator, the universal joint comprises a front spline yoke connected with the output shaft of the front gearbox, a front connecting yoke connected with the front spline yoke through a front universal joint cross, a rear spline yoke connected with the input shaft of the rear gearbox, and a rear connecting yoke connected with the rear spline yoke through a rear universal joint cross, the front connecting yoke is coaxially connected with the rear connecting yoke, and the brake disc is coaxially arranged on the front spline yoke / rear spline yoke.

[0009] The brake disc is coaxially arranged on the rotating shaft part of the front spline yoke or the rear spline yoke.

[0010] In the above-mentioned riding type four-wheel drive mini-cultivator, a flange plate is coaxially arranged on the front spline yoke / rear spline yoke, and the brake disc is fixedly connected with the flange plate through a connecting bolt and a nut.

[0011] The flange plate facilitates the installation and replacement of the brake disc.

[0012] In the above-mentioned riding type four-wheel drive mini-cultivator, the brake control assembly comprises a pull wire connected with the brake, a brake lever rotatably arranged on the frame, and a brake pedal arranged on the brake lever, the pull wire is connected with the brake lever, and when the brake pedal is stepped on, the pull wire pulls the brake and makes the brake clamped.

[0013] The brake is a caliper of a motorcycle or an automatic vehicle, and the caliper can be clamped when the pull wire is pulled.

[0014] In the above-mentioned riding type four-wheel drive mini-cultivator, the brake lever is rotatably arranged on the frame through a rotating shaft, a pull plate is arranged on the rotating shaft, and the end of the pull wire away from the brake is connected with the free end of the pull plate. When the brake pedal is stepped on, the rotating shaft is rotated through the brake lever, the pull plate is rotated when the rotating shaft is rotated, and the pull plate is rotated to pull the pull wire.

[0015] In the above-mentioned riding type four-wheel drive mini-cultivator, a brake support is arranged on the frame and located at the side of the front spline yoke / rear spline yoke, and the brake is fixed on the brake support.

[0016] Compared with the prior art, the riding type four-wheel drive mini-cultivator has the following advantages:

[0017] The mini-cultivator adopts a disc brake, the brake disc is directly exposed to the air, heat is quickly dissipated through air convection and radiation, the risk of heat attenuation is low, and the mini-cultivator is especially suitable for frequent braking or high-intensity working conditions; the brake directly clamps the brake disc, the mechanical transmission efficiency is high, and the braking effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a partial structure schematic view of the riding type four-wheel drive mini-cultivator in Example 1.

[0019] Figure 2is another part structure diagram of the riding type four-wheel drive mini-cultivator in embodiment one.

[0020] Figure 3 is a structure diagram of the brake part of the riding type four-wheel drive mini-cultivator in embodiment one.

[0021] In the figure, 1, front gearbox; 2, rear gearbox; 3, brake disc; 4, brake; 51, front spline fork; 52, front universal joint cross; 53, front yoke; 54, rear spline fork; 55, rear universal joint cross; 56, rear yoke; 57, flange plate; 6, pull wire; 7, brake pedal; 71, brake lever; 8, rotating shaft; 81, pull plate; 9, brake support; 101, front frame; 102, rear frame; 103, cover plate; 104, seat support. DETAILED DESCRIPTION

[0022] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0023] Embodiment one

[0024] As shown in Figure 1 and Figure 2 , the riding type four-wheel drive mini-cultivator comprises a frame, a front gearbox 1 and a rear gearbox 2 arranged on the frame, the frame comprises a front frame 101 and a rear frame 102, the front frame 101 is rotationally connected with the rear frame 102 through a first rotating shaft, the first rotating shaft extends vertically, the front gearbox 1 is arranged on the front frame 101, the rear gearbox 2 is arranged on the rear frame 102, a cover plate 103 is arranged on the front gearbox 1, a seat support 104 is arranged above the rear gearbox 2 and the rear frame 102, the seat support 104 is rotationally connected with the cover plate 103 through a second rotating shaft, and the first rotating shaft and the second rotating shaft are coaxially arranged.

[0025] As shown in Figure 1 and Figure 2 , the output shaft of the front gearbox 1 is drivingly connected with the input shaft of the rear gearbox 2 through a universal coupling, the brake disc 3 is arranged on the universal coupling, the brake 4 capable of clamping the brake disc 3 is arranged on the frame, and the brake 4 is driven by a brake operating assembly.

[0026] As shown in Figure 3 , the universal coupling comprises a front spline fork 51 connected with the output shaft of the front gearbox 1, a front yoke 53 connected with the front spline fork 51 through a front universal joint cross 52, a rear spline fork 54 connected with the input shaft of the rear gearbox 2, and a rear yoke 56 connected with the rear spline fork 54 through a rear universal joint cross 55, the front yoke 53 and the rear yoke 56 are coaxially connected, and the brake disc 3 is coaxially arranged on the front spline fork 51.

[0027] In order to facilitate the installation of the brake disc 3, a flange plate 57 is coaxially arranged on the front spline fork 51, and the brake disc 3 is fixedly connected with the flange plate 57 through connecting bolts and nuts.

[0028] A brake support 9 is arranged on the front frame 101 and located at the side of the front spline fork 51, the upper end of the brake support 9 is fixed on the cover plate 103, and the brake 4 is fixed on the brake support 9.

[0029] As shown in Figure 1 and Figure 3 , the brake operating assembly comprises a pull wire 6 connected with the brake 4, a brake lever 71 rotatably arranged on the frame, and a brake pedal 7 arranged at the free end of the brake lever 71, the pull wire 6 is connected with the brake lever 71, and when the brake pedal 7 is stepped on, the pull wire 6 pulls the brake 4 and makes the brake 4 clamped. The brake 4 in the embodiment is a caliper of a motorcycle / automatic vehicle, and when the pull wire 6 is pulled, the caliper can be clamped.

[0030] As shown in Figure 1 and Figure 3 , the brake lever 71 is rotatably arranged on the frame through a rotating shaft 8, the rotating shaft 8 is provided with a pull plate 81, and the end of the pull wire 6 away from the brake 4 is connected with the free end of the pull plate 81. When the brake pedal 7 is stepped on, the rotating shaft 8 will be rotated through the brake lever 71, the rotating shaft 8 will rotate the pull plate 81 when rotating, and the pull plate 81 will pull the pull wire 6 when rotating.

[0031] The disc brake is adopted in the mini-tiller, the brake disc 3 is directly exposed to the air, the heat is quickly dissipated through air convection and radiation, the risk of heat attenuation is low, and it is especially suitable for frequent braking or high-intensity working conditions; the brake 4 directly clamps the brake disc 3, the mechanical transmission efficiency is high, and the braking effect is good.

[0032] Embodiment two

[0033] The structural principle of the embodiment is basically the same as that of the first embodiment, and the difference lies in that the brake disc 3 is coaxially arranged on the rear spline fork 54, the flange plate 57 is coaxially arranged on the rear spline fork 54, and the brake disc 3 is fixedly connected with the flange plate 57 through connecting bolts and nuts.

[0034] The brake support 9 is arranged on the rear frame 102 and located at the side of the rear spline fork 54, the upper end of the brake support 9 is fixedly connected with the seat support 104, and the brake 4 is fixed on the brake support 9.

[0035] The specific embodiments described in the present document are only illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A riding four-wheel micro-cultivator comprising a frame, a front gearbox (1) and a rear gearbox (2) arranged on the frame, an output shaft of the front gearbox (1) being in driving connection with an input shaft of the rear gearbox (2) through a universal joint, characterized in that, The universal joint is provided with a brake disc (3), the vehicle frame is provided with a brake (4) capable of clamping the brake disc (3), and the brake (4) is driven by a brake operating assembly.

2. The ride-on four-wheel drive mini-tiller of claim 1, wherein, The universal joint comprises a front spline fork (51) connected with an output shaft of the front gearbox (1), a front yoke (53) connected with the front spline fork (51) through a front universal joint cross (52), a rear spline fork (54) connected with an input shaft of the rear gearbox (2), and a rear yoke (56) connected with the rear spline fork (54) through a rear universal joint cross (55), the front yoke (53) and the rear yoke (56) are coaxially connected, and the brake disc (3) is coaxially arranged on the front spline fork (51) / rear spline fork (54).

3. The ride-on four-wheel drive mini-tiller of claim 2, wherein, The front spline fork (51) / rear spline fork (54) is coaxially provided with a flange plate (57), and the brake disc (3) is fixedly connected with the flange plate (57) through connecting bolts and nuts.

4. The ride-on four-wheel drive mini-tiller of claim 1, wherein, The brake operating assembly comprises a pull wire (6) connected with the brake (4), a brake lever (71) rotatably arranged on the vehicle frame, and a brake pedal (7) arranged on the brake lever (71), the pull wire (6) is connected with the brake lever (71), and when the brake pedal (7) is stepped on, the pull wire (6) pulls the brake (4) and makes the brake (4) clamped.

5. The ride-on four-wheel drive mini-tiller of claim 4, wherein, The brake lever (71) is rotatably arranged on the vehicle frame through a rotating shaft (8), the rotating shaft (8) is provided with a pull plate (81), and one end of the pull wire (6) away from the brake (4) is connected with a free end of the pull plate (81).

6. The ride-on four-wheel drive mini-tiller of claim 2, wherein, The vehicle frame is provided with a brake support (9) located at a side of the front spline fork (51) / rear spline fork (54), and the brake (4) is fixed on the brake support (9).

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