Brake balance mechanism for left half shaft and right half shaft of agricultural machine walking box

Abstract

A brake balance mechanism for left and right half shafts of a walking box of agricultural machinery relates to the technical field of agricultural machinery and comprises a mounting frame, a hand brake handle is hinged to the upper portion of the mounting frame, and the walking box is fixedly arranged on the lower portion of the mounting frame and comprises a left brake shaft and a right brake shaft; the hand brake device is characterized in that a brake arm is rotationally arranged on the walking box, and one end of the brake arm is connected with the hinged end of a hand brake handle through a brake rope; the other end of the brake arm is rotationally connected with a rotating block, and brake rocker arms are fixedly arranged at the two ends of the rotating block; the two brake rocker arms are both located on the upper portion of the connecting line of the axes of the left brake shaft and the right brake shaft, and the two brake rocker arms rotate relative to the left brake shaft and the right brake shaft respectively when the two brake rocker arms descend. When the heights of the left and right brake rocker arms in the initial state are inconsistent, the brake arms can automatically adjust the angles with the left and right brake shafts according to requirements, so that the left and right brake forces are basically the same.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and particularly relates to a left and right half shaft brake balance mechanism for an agricultural machinery walking box. Background Art

[0002] Existing agricultural machinery consists of an engine, a transmission system, a running system, a steering system, a braking system, an electrical system, etc. For the transmission system, it includes an agricultural machinery walking box assembly. The agricultural machinery walking box assembly mainly includes walking half shafts for driving the left and right wheels, and also includes brake shafts corresponding to the left and right walking half shafts. The rotation of the brake shafts drives the braking components on the walking half shafts to achieve braking or release of braking. Specifically, the braking system realizes braking by driving the brake shafts to rotate through a brake rope to drive a brake arm.

[0003] However, it is found in actual research and development that due to the errors between parts and design parameters and the deviations during assembly, the heights of the left and right brake half shafts are inconsistent. During braking, a brake arm directly drives the two brake shafts to rotate for braking. In the case of assembly deviations and production errors, the braking forces of the brake arm and the two brake shafts are inconsistent, which will directly affect the braking effect and even directly affect the overall stability of the agricultural machinery due to the uneven braking forces between the two. Summary of the Utility Model

[0004] I. Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a left and right half shaft brake balance mechanism for an agricultural machinery walking box. When the initial heights of the left and right brake rocker arms are inconsistent, the brake arm can automatically adjust the angles with the left and right brake shafts according to requirements, so as to keep the left and right braking forces basically the same.

[0006] II. Specific Technical Solutions

[0007] A left and right half shaft brake balance mechanism for an agricultural machinery walking box includes a mounting frame. A handbrake handle is hinged to the upper part of the mounting frame, and a walking box is fixedly arranged at the lower part of the mounting frame. The walking box includes a left brake shaft and a right brake shaft. A brake arm is rotatably arranged on the walking box. One end of the brake arm is connected to the hinged end of the handbrake handle through a brake rope. The other end of the brake arm is rotatably connected with a rotating block, and both sides of the other end of the rotating block are provided with brake rocker arms. When the two brake rocker arms move up and down, they drive the left and right brake shafts to rotate.

[0008] Implementation Principle, Working Principle:

[0009] In this solution, each component is first installed on the mounting bracket. When braking, pulling the free end of the handbrake lever will drive the brake cable to pull upward the end of the brake arm connected to the brake cable. The other end of the brake arm will move downward, thereby driving the rotating block and the brake rocker arm to move downward, causing the left and right rocker arms to drive the left and right brake shafts to rotate respectively, thus achieving speed reduction braking. When braking, the end of the rotating block on the brake arm can rotate or tilt, which can ensure that the forces of the left and right brake rocker arms on the two sides of the brake shafts are basically the same, thereby avoiding the problem of poor braking effect caused by uneven left and right brake forces due to assembly errors and design errors.

[0010] Preferably: An installation plate is fixedly arranged on the walking box. The left and right brake shafts extend out of the installation plate. A fixed shaft is arranged at the bottom of the installation plate. The middle part of the brake arm is rotatably connected to the fixed shaft. The beneficial effect of this preference is that through the setting of the fixed shaft, it is convenient for the brake arm to rotate around the fixed shaft, and the setting of the installation plate is convenient for installing the components used for braking.

[0011] Preferably: Connection parts are arranged on both sides of the brake rocker arm connected to the left and right brake shafts. Waist-shaped holes matching the ends of the left and right brake shafts are opened in the middle of the connection parts. The beneficial effect of this preference is that through the connection parts sleeved on the ends of the left and right brake shafts, the wear of the left and right brake shafts can be reduced, effectively extending their service life. At the same time, the left and right brake shafts are matched with the connection parts through the waist-shaped holes. The connection part is relatively round. Without avoiding slipping, the wear of the left and right brake shafts can be effectively reduced.

[0012] Preferably: The rotating block is an isosceles triangle rotating block. The top angle part of the rotating block is connected to the brake arm through a rotating pin. The two bottom angle parts of the rotating block are connected to the brake rocker arm through a connecting rod. The connecting rod is connected to the rotating block through a bolt or a screw, and the connecting rod is fixedly connected to the brake rocker arm. The beneficial effect of this preference is that by connecting the rotating block and the brake arm through a rotating pin, the rotation of the rotating block can be ensured to be smooth. By connecting the connecting rod with the brake rocker arm, it is beneficial to the disassembly and assembly of the brake rocker arm. The rotating block is an isosceles triangle, which reduces the area of the rotating block while ensuring strength and has better balance.

[0013] Preferably: There are two rotating blocks, symmetrically arranged on both sides of the brake arm. The connecting rod is arranged between the two rotating blocks and the connecting rod and the two rotating blocks are connected by bolts. The beneficial effect of this preference is that the rotating block and the brake arm are arranged in this way, which can effectively strengthen their connection strength and ensure the braking effect.

[0014] Preferably, the sum of the lengths of the two brake rocker arms is greater than the distance between the left brake shaft and the right brake shaft. The beneficial effect of this preference is that through this setting, it can effectively ensure that the brake rocker arms can smoothly make frictional contact with the left brake shaft and the right brake shaft.

[0015] The beneficial effects of the present utility model are as follows:

[0016] When the initial heights of the left and right brake rocker arms or the initial heights of the two brake shafts are inconsistent, the rotating block will automatically tilt, which can ensure that the forces of the left and right brake rocker arms on the brake shafts on both sides are basically the same, thereby avoiding the problem of poor braking effect caused by uneven left and right brake forces due to assembly errors and design errors. Among them, through the setting of the connecting part, the wear of the left and right brake shafts can be reduced, and their service life can be extended. Using a brake rope for braking has a simple and convenient structure and is easy to maintain. Description of the Drawings

[0017] Figure 1 It is a schematic assembly structure diagram of the left and right half-axis brake balance mechanism of the agricultural machinery walking box of the present utility model.

[0018] Figure 2 It is a schematic connection diagram of the left and right half-axis brake balance mechanism of the agricultural machinery walking box of the present utility model.

[0019] Figure 3 is Figure 2 an exploded view of part A in

[0020] Description of the reference numerals: mounting bracket 1, handbrake handle 2, walking box 3, brake rope 4, left brake shaft 301, right brake shaft 302, brake arm 303, rotating block 304, brake rocker arm 305, mounting plate 306, fixed shaft 307, connecting part 308, rotating pin 309, connecting rod 310. Detailed Embodiment

[0021] The following elaborates on the preferred embodiments of the present utility model in detail with reference to the drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] During implementation, as Figure 1As shown: A left and right half - shaft brake balance mechanism for an agricultural machinery walking box, including a mounting frame 1. At the upper end of the mounting frame 1, a handbrake handle 2 is provided. One side of the handbrake handle 2 is hinged to the mounting frame 1, and the other side is a free end for driving the hinged side to rotate. At the lower part of the mounting frame 1, a walking box 3 is installed through a plurality of bolts. The walking box 3 has a left brake shaft 301 and a right brake shaft 302, and the left brake shaft 301 and the right brake shaft 302 are respectively used for the braking control of the left and right half - shafts.

[0023] During implementation, as Figure 2 , a mounting plate 306 is fixedly arranged on the walking box 3 through bolts. The ends of the left brake shaft 301 and the right brake shaft 302 pass through the mounting holes on the mounting plate 306. At the bottom on the left side of the mounting plate 306, a fixed shaft 307 is welded or integrally formed.

[0024] During implementation, as Figure 2 and Figure 3 , the fixed shaft 307 is rotatably connected to the middle part of the brake arm 305, specifically through a shaft - hole connection. Specifically, the left end of the handbrake handle 2 and the left end of the brake arm 303 are connected by a brake rope 4. An installation ear with an installation hole is formed at the left end of the brake arm 303. One end of the brake rope 4 is fixed through a wire rope end. The other end of the brake rope 4 is wound around the hinged end of the handbrake handle 2. When the free end of the handbrake handle 2 is pulled up, the brake rope 4 is wound up, thereby pulling the left end of the brake arm 303 to rise and the right end of the brake arm 303 to fall.

[0025] During implementation, a rotating block 304 is installed at the right end of the brake arm 303. The 304 is specifically connected to the brake arm through a pin 309 and the rotating block 304. When the two brake rocker arms 305 are unbalanced and have different heights, or when the heights of the two brake shafts are different, the rotating block 304 rotates, making the left and right braking forces consistent. Specifically, the rotating block 304 is an isosceles triangle rotating block 304. The top angle part of the rotating block 304 is connected to the brake arm 302, and the two bottom angle parts of the rotating block 304 are connected to the brake rocker arm 305 through a connecting rod 310.

[0026] Specifically, there are two rotating blocks 304, symmetrically arranged on both sides of the brake arm 302. The connecting rod 310 is arranged between the two rotating blocks 304 through bolts. Among them, the connecting rod 310 is connected to the rotating block 304 through bolts or screws. The connecting rod 310 and the brake rocker arm 305 can be connected through bolts or screws, or can be integrally formed. Among them, the sum of the lengths of the two brake rocker arms 305 is less than the distance between the left brake shaft 301 and the right brake shaft 302, which can ensure that the brake rocker arm 305 can smoothly drive the brake shaft to rotate and ensure the braking effect.

[0027] During implementation, the ends of the left brake shaft 301 and the right brake shaft 302 also cooperate with the connecting portion 308 of the brake rocker arm 305. A waist-shaped hole that matches the ends of the left brake shaft 301 and the right brake shaft 302 is provided in the middle of the connecting portion 308. By sleeving the connecting portion 308 on the ends of the left and right brake shafts, the wear of the left and right brake shafts can be reduced, effectively extending their service life. At the same time, the left and right brake shafts are matched with the connecting portion through the waist-shaped holes. The connection part is relatively round. Without avoiding slipping, the wear of the left and right brake shafts can be effectively reduced, and it is also convenient to drive the left and right brake shafts to rotate well.

[0028] Working principle: In this solution, first install each component on the mounting bracket. When braking, pull up the free end of the handbrake lever 2, which will drive the brake cable 4 to pull up the end of the brake arm 303 connected to the brake cable 4. The other end of the brake arm 303 will move downward, thereby driving the rotating block 304 and the brake rocker arm 305 to move downward, so that the connecting portions 308 of the two brake rocker arms 305 respectively drive the left brake shaft 301 and the right brake shaft 302 to rotate, thereby achieving speed reduction braking. When braking, one end of the rotating block 304 on the brake arm 303 can rotate or tilt, which can ensure that the forces of the left and right brake rocker arms 303 on the brake shafts on both sides are basically the same, thereby avoiding the problem of poor braking effect caused by uneven force on the left and right brakes due to assembly errors and design errors.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A brake balancing mechanism for left and right axles of a traveling box of an agricultural machinery, comprising a mounting frame (1), a hand brake handle (2) being hingedly connected to the upper part of the mounting frame (1), a traveling box (3) being fixedly arranged at the lower part of the mounting frame (1), and the traveling box (3) comprising a left brake shaft (301) and a right brake shaft (302); characterized in that: A brake arm (303) is rotatably arranged on the travel box (3), one end of the brake arm (303) is connected to the hinged end of the handbrake handle (2) through a brake rope (4); the other end of the brake arm (303) is rotatably connected to a rotating block (304), and brake rocker arms (305) are arranged on both sides of the other end of the rotating block (304); and when the two brake rocker arms (305) are raised or lowered, they drive the left brake shaft (301) and the right brake shaft (302) to rotate.

2. The brake balancing mechanism for the left and right half shafts of the agricultural machinery traveling box according to claim 1 is characterized in that: A mounting plate (306) is fixedly arranged on the travel box (3), a left brake shaft (301) and a right brake shaft (302) extend out of the mounting plate (306), a fixed shaft (307) is arranged at the bottom of the mounting plate (306), and the middle part of the brake arm (303) is rotatably connected to the fixed shaft (307).

3. The brake balancing mechanism for the left and right half shafts of the agricultural machinery traveling box according to claim 2 is characterized in that: A connecting portion (308) is provided on one side of the brake rocker arm (305) connected to the left brake shaft (301) and the right brake shaft (302), and a waist hole matching with the ends of the left brake shaft (301) and the right brake shaft (302) is provided in the middle of the connecting portion (308).

4. The brake balancing mechanism for the left and right half shafts of the agricultural machinery traveling box according to claim 1 is characterized in that: The rotating block (304) is an isosceles triangle rotating block (304), the top corner of the rotating block (304) is connected to the brake arm (303) through a rotating pin (309), the two bottom corners of the rotating block (304) are connected to the brake rocker arm (305) through a connecting rod (310), the connecting rod (310) is connected to the rotating block (304) through bolts or screws, and the connecting rod (310) is fixedly connected to the brake rocker arm (305).

5. The brake balancing mechanism for the left and right half shafts of the agricultural machinery traveling box according to claim 4 is characterized in that: The rotating blocks (304) are in two pieces and are symmetrically arranged on both sides of the brake arm (303). The connecting rod (310) is arranged between the two rotating blocks (304), and the connecting rod (310) and the two rotating blocks (304) are connected by bolts.

6. The brake balancing mechanism for the left and right half shafts of the agricultural machinery traveling box according to claim 5 is characterized in that: The length of the two brake rocker arms (305) is greater than the distance between the left brake shaft (301) and the right brake shaft (302).

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