Parking braking mechanism of crawler harvester

Abstract

The utility model discloses a crawler harvester parking brake mechanism which comprises a mounting seat and a fixing frame, a brake handle is rotatably connected to the interior of the mounting seat, a brake pull wire is fixedly connected to the interior of the brake handle, a pair of bearings is fixedly connected to the interior of the fixing frame, a transition shaft is rotatably connected to the interiors of the pair of bearings, and a brake pull wire is fixedly connected to the interior of the transition shaft. A pair of first connecting rods are fixedly connected to the outer surface of the transition shaft, first connecting blocks are rotatably connected to the ends, away from the transition shaft, of the first connecting rods, second connecting blocks are fixedly connected to the ends, away from the first connecting rods, of the first connecting blocks, and brake rocker arms are rotatably connected to the interiors of the second connecting blocks; the braking rocker arm of the gearbox is stretched through the spring, and even if mechanical gaps exist in other parts, the spring is in a stretched state, so that the effects that the return phenomenon caused by the mechanical gaps is effectively eliminated, and the parking safety is guaranteed are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of a parking brake device, in particular to a parking brake mechanism for a crawler harvester. Background Art

[0002] The working conditions of a crawler harvester are relatively complex. After the whole machine stops, it is necessary to park the vehicle. Because the roads or field conditions where it usually travels are harsh, it is necessary to perform parking braking after stopping to prevent vehicle slipping and causing economic losses or personal injuries. At present, the main parking braking method for crawler machines is to use a rigid connection, that is, a hanging chain or a rigid rod is used to connect from the brake handle to the gearbox. When the driver pulls up the parking brake handle, the transition hanging chain or the pull rod is pulled, so as to lift the left and right brake rocker arms of the gearbox, and then the friction plates in the gearbox body are combined, thereby achieving the parking braking effect. This parking braking structure is relatively simple. However, due to the use of a hanging chain or a rigid rod connection, when the brake handle is pulled up to the braking position, due to mechanical clearances, the brake friction plates in the gearbox have a return phenomenon, resulting in incomplete parking and poor guarantee of braking safety. Content of the Utility Model

[0003] An object of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a parking brake mechanism for a crawler harvester. When the brake handle is pulled up, the stretching of the spring acts on the brake rocker arm of the gearbox. Even if there are mechanical clearances in other components, because the spring is in a stretched state, the return phenomenon caused by mechanical clearances is effectively eliminated, and the parking safety is guaranteed.

[0004] The utility model also provides a parking brake mechanism for a crawler harvester as described above, a mounting seat, and a fixing frame. A brake handle is rotatably connected inside the mounting seat. A brake cable is fixedly connected inside the brake handle. A pair of bearings are fixedly connected inside the fixing frame. A transition shaft is rotatably connected inside the pair of bearings. A pair of first connecting rods are fixedly connected to the outer surface of the transition shaft. One end of the pair of first connecting rods away from the transition shaft is rotatably connected to a first connecting block. A brake spring is fixedly connected to one end of the first connecting block away from the first connecting rod. A second connecting block is fixedly connected to the end of the brake spring away from the first connecting block. A brake rocker arm is rotatably connected inside the second connecting block. One end of the brake cable away from the brake handle is fixedly connected to a third connecting block. A second connecting rod is rotatably connected inside the third connecting block.

[0005] According to the parking brake mechanism for a crawler harvester, the brake cable penetrates through the inside of the mounting seat.

[0006] According to the parking brake mechanism for a crawler harvester, a brake box is arranged at the rear end of the brake rocker arm.

[0007] According to the parking brake mechanism of a crawler harvester described above, a brake box is provided at the rear end of the brake rocker arm.

[0008] According to the parking brake mechanism of a crawler harvester described above, a limiting plate is fixedly connected to the front surface of the fixing frame. A through groove is provided inside the limiting plate, and a limiting block is slidably connected inside the through groove. The inside of the limiting block is fixedly connected to the brake cable. The brake tension can be more precisely controlled through the limiting block, providing a more stable braking force. Moreover, the limiting block can be used to reduce the friction between the brake cable and the limiting plate, increasing the service life of the brake cable. The limiting plate is used to support the brake cable and prevent the brake cable from rubbing against other equipment and causing equipment damage.

[0009] Some of the additional aspects and advantages of the present utility model will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0010] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0011] Figure 1 It is the overall structure diagram of a parking brake mechanism of a crawler harvester of the present utility model;

[0012] Figure 2 It is Figure 1 The enlarged schematic diagram of the structure at A in

[0013] Figure 3 It is Figure 1 The enlarged schematic diagram of the structure at B in

[0014] Legend Explanation:

[0015] 1. Mounting seat; 2. Fixing frame; 3. Brake handle; 4. Brake cable; 5. Bearing; 6. Transition shaft; 7. First connecting rod; 8. First connecting block; 9. Second connecting block; 10. Brake rocker arm; 11. Third connecting block; 12. Second connecting rod; 13. Limiting plate; 14. Through groove; 15. Limiting block; 16. Brake box; 17. Brake spring. Detailed Embodiment

[0016] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0017] Refer to Figures 1-3, in an embodiment of the utility model, a parking brake mechanism for a crawler harvester includes a mounting seat 1 and a fixing frame 2. A brake handle 3 is rotatably connected inside the mounting seat 1. A brake cable 4 is fixedly connected inside the brake handle 3. The brake cable 4 penetrates through the inside of the mounting seat 1. A pair of bearings 5 are fixedly connected inside the fixing frame 2. A transition shaft 6 is rotatably connected inside the pair of bearings 5. A pair of first connecting rods 7 are fixedly connected to the outer surface of the transition shaft 6. One end of the pair of first connecting rods 7 away from the transition shaft 6 is rotatably connected to a first connecting block 8. One end of the first connecting block 8 away from the first connecting rod 7 is fixedly connected to a brake spring 17. One end of the brake spring 17 away from the first connecting block 8 is fixedly connected to a second connecting block 9. A brake rocker arm 10 is rotatably connected inside the second connecting block 9. One end of the brake cable 4 away from the brake handle 3 is fixedly connected to a third connecting block 11. A second connecting rod 12 is rotatably connected inside the third connecting block 11. The outer surface of the transition shaft 6 is fixedly connected to the second connecting rod 12. A limiting plate 13 is fixedly connected to the front surface of the fixing frame 2. A through groove 14 is provided inside the limiting plate 13. A limiting block 15 is slidably connected inside the through groove 14. The inside of the limiting block 15 is fixedly connected to the brake cable 4. A brake box 16 is provided at the rear end of the brake rocker arm 10.

[0018] Working principle: By rotating the brake handle 3, the brake handle 3 rotates to lift the brake cable 4. The brake cable 4 drives the transition shaft 6 to rotate inside the bearing 5. The rotation of the transition shaft 6 drives the first connecting rod 7 to rotate. The rotation of the first connecting rod 7 drives the brake spring 17 to stretch. The brake spring 17 drives the brake rocker arm 10 to rotate. Since the brake spring 17 is in a stretched state, the effect of effectively eliminating the return phenomenon caused by mechanical clearances is achieved, and the parking safety is guaranteed.

[0019] The above has described in detail the embodiments of the present utility model in conjunction with the drawings. However, the present utility model is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the said technical field, various changes can be made without departing from the purpose of the present utility model.

Claims

1. A parking brake mechanism for a crawler harvester, characterized in that: include: A mounting seat (1), a fixing frame (2), wherein the mounting seat (1) is internally rotatably connected to a brake handle (3), the brake handle (3) is internally fixedly connected to a brake cable (4), the fixing frame (2) is internally fixedly connected to a pair of bearings (5), the pair of bearings (5) are internally rotatably connected to a transition shaft (6), the outer surface of the transition shaft (6) is fixedly connected to a pair of first connecting rods (7), one end of the pair of first connecting rods (7) away from the transition shaft (6) is rotatably connected to a first connecting block (8), one end of the first connecting block (8) away from the first connecting rod (7) is fixedly connected to a brake spring (17), one end of the brake spring (17) away from the first connecting block (8) is fixedly connected to a second connecting block (9), the second connecting block (9) is internally rotatably connected to a brake rocker arm (10), one end of the brake cable (4) away from the brake handle (3) is fixedly connected to a third connecting block (11), and the third connecting block (11) is internally rotatably connected to a second connecting rod (12).

2. A crawler harvester parking brake mechanism according to claim 1, characterized in that: The brake cable (4) passes through the interior of the mounting seat (1).

3. A parking brake mechanism for a crawler harvester according to claim 1, characterized in that: A brake box (16) is provided at the rear end of the brake rocker arm (10).

4. The parking brake mechanism of a crawler harvester according to claim 1, characterized in that: The outer surface of the transition shaft (6) is fixedly connected to the second connecting rod (12).

5. The parking brake mechanism of a crawler harvester according to claim 1, characterized in that: The front surface of the fixing frame (2) is fixedly connected to a limit plate (13), a through slot (14) is provided inside the limit plate (13), the interior of the through slot (14) is slidably connected to a limit block (15), and the interior of the limit block (15) is fixedly connected to the brake cable (4).

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