Intermediate axle speed reducer structure assembly with double-clamp parking brake

Abstract

The utility model discloses an intermediate axle speed reducer structure assembly with a double-caliper parking brake, which is characterized by consisting of an intermediate axle speed reducer, a brake disc, a brake disc fastening bolt, a brake caliper and a brake bracket, compared with a traditional structure, the parking brake is additionally arranged on the intermediate axle speed reducer of the drive axle, the wheel edge brake is helped to achieve the parking braking function of the whole vehicle, the wheel edge brake only needs to provide the single function of service braking, the design is ingenious, and the related manufacturing cost of the brake is greatly reduced; the fastening bolt hole site of the original shell of the speed reducer is fully utilized, the arrangement of the two brake supports and the two brake calipers is achieved to the maximum extent, and compared with the arrangement of a single brake caliper, the arrangement of the two calipers arranged on the left side and the right side enables parking braking force to be more abundant and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of mining truck axles, in particular to a mid-bridge reducer structure assembly with a double-caliper parking brake. Background Art

[0002] The vehicle brakes of mining trucks are the same as those of heavy trucks, and also include two parts: service brakes and parking brakes. Service brakes are the brakes that occur when the vehicle is in motion, and parking brakes are the brakes that occur when the vehicle is parked.

[0003] In traditional mining trucks and heavy trucks, the driving brake and parking brake functions are implemented by the same brake, which is arranged on both sides of the vehicle. The brake structure is a drum brake. In recent years, with the continuous increase in the tonnage of mining vehicles, new challenges have been put forward for the vehicle braking system. In order to meet the design requirements, the brake has to be replaced by a drum brake with a disc brake with greater braking force and more reliable braking. However, with the continued increase in the tonnage of mining vehicles, especially the current mining vehicle tonnage has exceeded 150 tons, it has brought great difficulties to the matching of disc brakes. Disc brakes are composed of brake calipers and brake discs. For brake discs, increasing the braking torque directly increases its diameter. However, for brake calipers, due to the dual responsibilities of driving and parking, the structure of the brake calipers becomes extremely complicated, especially in the context of super-large braking force requirements. Heavy mining bridges use transmission structure disc brakes, and the production cost needs to be doubled. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a mid-bridge speed reducer structural assembly with a double-caliper parking brake.

[0005] The technical solution provided by the utility model is: a mid-bridge reducer structure assembly with a double-caliper parking brake, which is special in that it consists of a mid-bridge reducer, a brake disc, a brake disc fastening bolt, a brake caliper and a brake bracket; a brake disc assembly stop is arranged on the flange of the mid-bridge reducer, the inner hole diameter of the brake disc is the same as the outer diameter of the brake disc assembly stop, the pitch circle diameter of the brake disc is equal to the pitch circle diameter of the flange, and the brake disc is assembled and fixed to the flange of the mid-bridge reducer; the mid-bridge reducer drives the brake disc to rotate freely through the flange; a base mounting surface is arranged on the brake bracket, the base mounting surface is parallel to the convex surface of the bridge box cover of the mid-bridge reducer, and the brake bracket is assembled and fixed to the bridge box cover of the mid-bridge reducer; a brake caliper assembly surface is arranged on the brake bracket, the brake caliper assembly surface is parallel to the assembly base of the brake caliper, and the brake caliper is assembled and fixed to the brake bracket; the brake caliper has a friction plate parallel to the plane of the brake disc.

[0006] Furthermore, the flange of the mid-bridge reducer is provided with brake disc assembly bolt holes, and the number of the brake disc assembly bolt holes is 16; the brake disc is provided with bolt holes for assembly with the flange, and the number of the bolt holes is 16. The bolt hole diameters of the brake disc are all equal to the brake disc assembly bolt hole diameters on the flange, and the brake disc and the flange of the mid-bridge reducer are assembled and fixed together by brake disc fastening bolts.

[0007] Furthermore, the brake bracket is provided with base mounting holes, the number of which is 5. The base mounting holes are identical in position and size to the boss holes of the bridge box cover. The brake bracket and the bridge box cover of the mid-bridge reducer are assembled and fixed together by brake bracket fastening bolts.

[0008] Furthermore, the brake bracket is provided with brake caliper assembly bolt holes, the number of the brake caliper assembly bolt holes is 2, the diameter of the brake caliper assembly bolt holes is equal to the assembly bolt diameter of the brake caliper, and the distance between the brake caliper assembly bolt holes is equal to the wheelbase of the assembly bolts.

[0009] Furthermore, there are two brake brackets, which are respectively located on the left and right sides of the mid-bridge reducer, and the two brackets form an angle of 140-160° with the center line of the brake disc.

[0010] Furthermore, the brake bracket fastening bolts are lengthened bolts.

[0011] Furthermore, the brake caliper has two friction plates, and the single-side distance between the two friction plates and the brake disc is 0.7-0.75 mm.

[0012] The beneficial effects of the utility model are: 1. A parking brake is added to the mid-bridge reducer of the drive axle to help the wheel-side brakes realize the parking brake function of the whole vehicle, so that the wheel-side brakes only need to provide the single function of driving brake. This arrangement is not only ingenious in design, but also greatly reduces the manufacturing cost related to the brake; 2. The original housing fastening bolt holes of the reducer are fully utilized to maximize the arrangement of two brake brackets and brake calipers. Compared with the single brake caliper arrangement, this double caliper arrangement on the left and right sides makes the parking braking force more substantial and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 yes Figure 1 A-direction view;

[0015] Figure 3 yes Figure 1 B-direction view;

[0016] Figure 4It is a structural schematic diagram of the brake bracket of the utility model. DETAILED DESCRIPTION

[0017] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0018] like Figure 1 , 2 , 3, and 4, a mid-bridge reducer structure assembly with a double-caliper parking brake is composed of a mid-bridge reducer 1, a brake disc 2, a brake disc fastening bolt 3, a brake caliper 4, and a brake bracket 5; there are two brake brackets 5, which are respectively assembled on the left and right sides of the mid-bridge reducer 1, and the two are at an angle of 140-160° relative to the center line of the brake disc 2; the flange of the mid-bridge reducer 1 is processed with a brake disc assembly stop and a brake disc assembly bolt hole, and the number of the brake disc assembly bolt holes is 16. The inner hole diameter of the brake disc 2 is processed to be the same as the outer diameter of the brake disc assembly stop of the flange. The brake disc 2 is also processed with bolt holes for assembly with the flange. The number of bolt holes is 16. The pitch circle diameter of the brake disc 2 and the diameter of the brake disc assembly bolts are equal to the corresponding flanges. The two are assembled and fixed together by 16 brake disc fastening bolts 3. In this way, the mid-bridge reducer 1 can drive the brake disc 2 to rotate freely through the flange; the brake bracket 5 is processed with a base mounting surface and a base mounting hole The number of base mounting holes is 5, the base mounting surface is parallel to the boss surface of the bridge box cover of the mid-bridge reducer 1, the position and size of the base mounting hole and the boss hole of the bridge box cover are the same, and the two are assembled and fixed together by the brake bracket fastening bolts. Compared with the existing reducer, the reducer housing and the bridge box cover are connected with fastening bolts at this position. The specifications of these bolts are the same, and only the length is increased; the brake bracket 5 is processed with a brake caliper assembly surface and a brake caliper assembly bolt hole, the number of bolt holes is 2, the brake caliper assembly surface is parallel to the assembly base of the brake caliper 4, the brake caliper assembly bolt hole is equal to the assembly bolt diameter of the brake caliper 4, and the bolt hole spacing is equal to the wheelbase of the assembly bolt, and the two are assembled and fixed together; a friction plate parallel to the plane of the brake disc 2 is assembled on the brake caliper 4, the number of friction plates is 2, and the single-side distance between the two friction plates and the brake disc is 0.7-0.75mm, which can be obtained by fine-tuning the brake caliper 4. At this point, a mid-bridge reducer structure assembly with a double-caliper parking brake is formed.

[0019] The utility model discloses a mid-bridge reducer structure assembly with a double-caliper parking brake. When the reducer assembly 1 is in operation, the flange receives the torque brought by the transmission shaft of the whole vehicle and rotates freely, and the flange drives the brake disc 2 to rotate freely accordingly. The brake caliper 4 is assembled and fixed with the reducer assembly 1 through the brake bracket 5. The friction plate of the brake caliper 4 and the brake disc 2 are adjusted to leave a distance of 0.7-0.75mm on one side. When the whole vehicle needs to initiate braking in the driving state, it can be implemented through the wheel side brake of the axle assembly like an ordinary axle. When the whole vehicle needs to initiate braking in the parking state, the hydraulic cylinders of the two brake calipers 4 drive the friction plates to fit tightly and reliably with the brake disc 2, so that the brake disc 2 is completely restrained from rotation. At this point, the flange connected thereto and the whole reducer assembly lose the possibility of free rotation, and the axle assembly and the whole vehicle achieve parking braking.

[0020] It should be understood that the technical features not elaborated in detail in this specification belong to the prior art. Although the implementation methods of this application are described, this application is not limited to the above specific implementation methods, which are merely illustrative and not restrictive. Ordinary technicians in this field can make more forms under the enlightenment of this application without departing from the scope of protection of the patent purpose and claims, which are all within the scope of protection of this application.

Claims

1. A mid-bridge reducer structure assembly with a double-caliper parking brake, characterized in that: The invention comprises a mid-bridge reducer (1), a brake disc (2), brake disc fastening bolts (3), a brake caliper (4) and a brake bracket (5); a brake disc assembly stop is arranged on the flange of the mid-bridge reducer (1); the inner hole diameter of the brake disc (2) is the same as the outer diameter of the brake disc assembly stop; the pitch circle diameter of the brake disc (2) is equal to the pitch circle diameter of the flange; the brake disc (2) and the flange of the mid-bridge reducer (1) are assembled and fixed together; the mid-bridge reducer (1) drives the brake disc (2) through the flange The brake bracket (5) is provided with a base mounting surface, the base mounting surface is parallel to the convex surface of the bridge box cover of the middle bridge reducer (1), and the brake bracket (5) and the bridge box cover of the middle bridge reducer (1) are assembled and fixed together; the brake bracket (5) is provided with a brake caliper mounting surface, the brake caliper mounting surface is parallel to the mounting base of the brake caliper (4), and the brake caliper (4) and the brake bracket (5) are assembled and fixed together; the brake caliper (4) has a friction plate parallel to the plane of the brake disc (2).

2. The mid-bridge reducer structure assembly with double-caliper parking brake according to claim 1 is characterized in that: The flange of the mid-bridge reducer (1) is provided with brake disc assembly bolt holes, and the number of the brake disc assembly bolt holes is 16; the brake disc (2) is provided with bolt holes for assembly with the flange, and the number of the bolt holes is 16. The bolt hole diameters of the brake disc (2) are all equal to the brake disc assembly bolt hole diameters on the flange. The brake disc (2) and the flange of the mid-bridge reducer (1) are assembled and fixed together by brake disc fastening bolts (3).

3. The mid-bridge reducer structure assembly with double-caliper parking brake according to claim 1 is characterized in that: The brake bracket (5) is provided with base mounting holes, the number of which is 5. The base mounting holes are in the same position and size as the boss holes of the bridge box cover. The brake bracket (5) is assembled and fixed to the bridge box cover of the mid-bridge reducer (1) by means of brake bracket fastening bolts.

4. The mid-bridge reducer structure assembly with double-caliper parking brake according to claim 1 is characterized in that: The brake bracket (5) is provided with brake caliper assembly bolt holes, the number of which is 2, the diameter of the brake caliper assembly bolt holes is equal to that of the assembly bolts of the brake caliper (4), and the distance between the brake caliper assembly bolt holes is equal to the wheelbase of the assembly bolts.

5. A mid-bridge reducer structure assembly with a double-caliper parking brake according to claim 1 or 4, characterized in that: There are two brake brackets (5), which are respectively located on the left and right sides of the mid-bridge reducer (1), and the center line connecting the two brackets and the brake disc (2) forms an angle of 140-160 degrees.

6. The mid-bridge reducer structure assembly with double-caliper parking brake according to claim 3 is characterized in that: The brake bracket fastening bolts are lengthened bolts.

7. The mid-bridge reducer structure assembly with double-caliper parking brake according to claim 1 is characterized in that: The brake caliper (4) has two friction plates, and the distance between the two friction plates and the brake disc on one side is 0.7-0.75 mm.

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