Fixing structure of loading machine gearbox parking brake

Abstract

The utility model discloses a fixing structure for a parking brake of a gearbox of a loading machine. The fixing structure comprises a gearbox body, a nut, two positioning pins, a mechanical brake caliper body, a bolt, a spring washer, a brake disc and a front flange, two cylindrical bosses are cast on the surface of the gearbox body, and each cylindrical boss is provided with an inner threaded hole. One ends of the two positioning pins are screwed and mounted in the inner threaded holes of the cylindrical boss, the other ends of the two positioning pins are in floating fit with the mechanical brake caliper body, and the inner brake pad and the outer brake pad are clamped on the two sides of the brake disc; and the brake disc is fixed with a front flange of the gearbox through a bolt and a spring washer. The fixing support is simple and compact in structure, low in manufacturing cost and easy and convenient to assemble, and the problems that in the prior art, a fixing support of a parking brake of a loader gearbox is large in assembling difficulty and high in manufacturing cost are solved.

Description

Technical Field

[0001] The utility model relates to a gearbox assembly for a loader, in particular to a parking brake fixing structure for a gearbox for a loader. Background Art

[0002] The brake has the function of slowing down, stopping or keeping the moving parts in a stopped state. It is a mechanical device that stops or slows down the moving parts in mechanical equipment, commonly known as brakes. The brake is mainly composed of a fixed bracket, a brake part and an operating device. When the vehicle needs to be parked, the mechanical brake is activated to push the inner and outer brake pads to move toward the brake disc to stop the vehicle. The existing loader parking brake is generally installed in the gearbox. It consists of a fixed bracket, a brake disc, a mechanical brake, etc. The specific installation is as follows: the fixed bracket with two locating pins is fixed to the box through the brake caliper fixing plate and fasteners; the brake disc is fixed to the front flange of the gearbox through fasteners; the mechanical brake is floatingly matched with the two locating pins on the fixed bracket, and the inner and outer brake pads are stuck on both sides of the brake disc. When the vehicle is parked and stopped, the driver lifts the parking handle, that is, pulls up the mechanical brake, thereby pushing the inner and outer brake pads to move toward the brake disc to stop the vehicle when parking. The defects of the parking brake fixing structure are: first, during actual assembly, workers have to lift the heavy bracket to align it with the bolt holes of the box body, and then screw in multiple bolts, which makes it difficult to assemble the fixed bracket; second, the loader has a harsh working environment, and has high requirements for the surface treatment, rust prevention and stability of the fixed bracket, resulting in high manufacturing costs for the fixed bracket. Summary of the invention

[0003] The utility model aims to provide a loader gearbox parking brake fixing structure which has a simple and compact structure, low manufacturing cost and simple and convenient assembly, so as to solve the problems of difficult assembly and high manufacturing cost of the loader gearbox parking brake fixing bracket in the prior art.

[0004] To achieve the above purpose, the utility model loader gearbox parking brake fixing structure includes a gearbox housing, a nut 2, two locating pins 3, a mechanical brake caliper body 4, a bolt 5, a spring washer 6, a brake disc 7 and a front flange 8; two cylindrical bosses 1 are cast on the surface of the gearbox housing, and each cylindrical boss is provided with an internal threaded hole; one end of the two locating pins 3 is screwed and installed in the internal threaded hole of the cylindrical boss 1, and the other end is floatingly matched with the mechanical brake caliper body 4 and the inner and outer brake pads are clamped on both sides of the brake disc 7; the brake disc 7 is fixed to the front flange 8 of the gearbox by bolts 5 and spring washers 6.

[0005] The outer dimensions of the cylindrical boss 1 are Φ50×60.

[0006] The utility model loader gearbox parking brake fixing structure has the following technical features and beneficial effects by arranging two cylindrical bosses with internal threaded holes on the surface of the gearbox case:

[0007] 1. Replace the fixed bracket of the prior art, thereby eliminating the brake caliper fixing plate and the fasteners connected and installed with the box body, which not only greatly reduces the production cost, but also significantly improves the assembly efficiency.

[0008] 2. Two cylindrical bosses with internal threaded holes are used to replace the fixed bracket, which has a simple and compact structure and is convenient and efficient to manufacture and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The utility model is a main cross-sectional schematic diagram of a parking brake fixing structure of a loader gearbox.

[0010] Reference numerals: cylindrical boss 1 , nut 2 , locating pin 3 , mechanical brake caliper body 4 , bolt 5 , spring washer 6 , brake disc 7 , front flange 8 . DETAILED DESCRIPTION

[0011] Figure 1 As shown, the utility model loader gearbox parking brake fixing structure comprises a gearbox housing, a nut 2, two locating pins 3, a mechanical brake caliper body 4, a bolt 5, a spring washer 6, a brake disc 7 and a front flange 8; two cylindrical bosses 1 with an outer dimension of Φ50×60 are cast on the surface of the gearbox housing, and each cylindrical boss is provided with an internal threaded hole; one end of the two locating pins 3 is screwed and installed in the internal threaded hole of the cylindrical boss 1, and the other end is floatingly matched with the mechanical brake caliper body 4 and the inner and outer brake pads are clamped on both sides of the brake disc 7; the brake disc 7 is fixed to the front flange 8 of the gearbox by bolts 5 and spring washers 6.

[0012] The utility model discloses a loader gearbox parking brake fixing structure with the characteristics of simple and compact structure, low manufacturing cost and simple and convenient assembly, and solves the problems in the prior art that the loader gearbox parking brake fixing bracket is difficult to assemble and has many parts and components resulting in high manufacturing cost.

Claims

1. A parking brake fixing structure for a loader gearbox, comprising a gearbox housing, a nut (2), two positioning pins (3), a mechanical brake caliper (4), a bolt (5), a spring washer (6), a brake disc (7) and a front flange (8); the brake disc (7) is fixed to the front flange (8) of the gearbox by means of the bolt (5) and the spring washer (6); the characteristics are: Two cylindrical bosses (1) are cast on the surface of the gearbox housing, and each cylindrical boss is provided with an internal threaded hole; one end of the two positioning pins (3) is screwed and installed in the internal threaded hole of the cylindrical boss (1), and the other end is floatingly matched with the mechanical brake caliper (4), and the inner and outer brake pads are clamped on both sides of the brake disc (7).

2. The parking brake fixing structure of a loader transmission as claimed in claim 1, characterized in that: The outer dimensions of the cylindrical boss (1) are Φ50×60.

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