Quick-change brake structure of commercial vehicle

Abstract

The utility model relates to a commercial vehicle quick-change brake structure which comprises a brake disc, a wedge block assembly and an air chamber, a fixing seat is installed in front of the brake disc, brake shoes are arranged on the two sides of the fixing seat respectively, fixing shafts are further arranged on the two sides in the fixing seat respectively, and the tail ends of the two brake shoes extend into the fixing seat and are movably connected with the fixing shafts. The top ends of the two brake shoes are connected through the wedge block assembly, and the air chamber is arranged on the back face of the brake disc and communicated with the wedge block assembly. An adjusting assembly is further arranged in the middle of the fixing base. According to the wedge brake, rope fixing is replaced with a gear transmission mode, the brake shoes on the left side and the right side are driven at the same time, adduction positioning of the brake shoes can be rapidly completed, normal deflection of the brake shoes cannot be affected by the gear structure after the adjusting handle is taken out, the defect that an existing wedge brake is low in installation efficiency is effectively overcome, and the service life of the wedge brake is prolonged. And the production and assembly efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of brake, concretely relates to a commercial vehicle quick-change brake structure. BACKGROUND

[0002] The brake of the car is the brake device of the car, and the brake used by the car is almost friction type and can be divided into drum type and disc type two categories, the rotating element in the friction pair of the drum type brake is the brake drum, and the working surface thereof is a cylindrical surface, and the rotating element of the disc type brake is the rotating brake disc, and the end surface is the working surface.

[0003] With the needs of development and different needs of customers, another brake is gradually derived from the drum type brake, which is the wedge type brake, the wedge type brake is installed by surrounding and tightening the two side brake shoes through the rope, and then the spring is installed, the installation mode needs to prepare the suitable rope in advance, the binding operation is relatively inconvenient, and the installation efficiency of the wedge type brake is affected. CONTENT OF THE UTILITY MODEL

[0004] Based on the above description, the utility model provides a commercial vehicle quick-change brake structure to solve the defects that the shoe structure in the existing wedge type brake needs to be installed with the aid of a rope, the operation is inconvenient, and the working efficiency is affected.

[0005] The utility model is realized through the following technical schemes:

[0006] A commercial vehicle quick-change brake structure, including brake disc, wedge block assembly and air chamber, the front surface of brake disc is installed with fixed seat, the both sides of fixed seat are equipped with brake shoe respectively, and the both sides of the inside of fixed seat are also equipped with fixed shaft respectively, the tail end of two brake shoes extends to the inside of fixed seat and is movably connected with fixed shaft, and the top end of two brake shoes is connected through wedge block assembly, and the air chamber is arranged on the back surface of brake disc and is communicated with wedge block assembly; The middle position of the fixed seat is also provided with an adjusting assembly, and the adjusting assembly is in transmission engagement with the side walls of the two brake shoes.

[0007] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0008] Further, the brake shoe is arranged in an arc shape and provided with a connecting portion on the end face away from the fixed seat, and the two connecting portions are used to be connected and fixed with the two ends of the spring.

[0009] Further, the adjusting assembly comprises a movable shaft arranged in the inside of the fixed seat, the movable shaft is provided with two ends and is movably connected with the inner wall of the fixed seat through the ball bearings, and one end of the movable shaft extends outward to the outside of the fixed seat and is connected with an adjusting handle.

[0010] Further, the end face center of the outer end of the movable shaft is provided with an internal hexagonal through hole, the lower half of the adjusting handle is inserted into the movable shaft, and the upper half of the adjusting handle is provided with a knob and an anti-skid pad arranged on the side wall.

[0011] Further, the outer side walls of the two movable shafts are respectively fixedly provided with transmission gears, and the two transmission gears are in mesh with each other.

[0012] Further, the end of the brake shoe movably connected with the fixed shaft is provided with an arc-shaped surface and a transmission tooth arranged on the arc-shaped surface, and the transmission teeth at the ends of the two brake shoes are in mesh with the two transmission gears, respectively.

[0013] Compared with the prior art, the technical scheme of the present application has the following beneficial technical effects:

[0014] The present application is improved based on the existing brake disc structure, adopts a gear transmission mode instead of a rope fixing mode, and drives the brake shoes on the left and right sides, so that the brake shoes can be quickly positioned inward, and after the adjusting handle is taken out, the gear structure does not affect the normal deflection of the brake shoes, and can ensure that the deflection angles of the two brake shoes are consistent, effectively solving the low installation efficiency of the existing wedge brake, and greatly improving the production and assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a structural schematic view of a brake disc in the embodiment;

[0016] Figure 2 FIG. 2 is a structural schematic view of an adjusting assembly and a brake shoe in the embodiment;

[0017] Figure 3 FIG. 3 is a transmission structure schematic view when the brake shoe is positioned inward in the embodiment;

[0018] Figure 4 FIG. 4 is a transmission structure schematic view when the brake shoe is braked in the embodiment;

[0019] 1, brake disc; 2, wedge block assembly; 3, air chamber; 4, fixed seat; 41, fixed shaft; 5, brake shoe; 51, connecting part; 6, adjusting assembly; 61, movable shaft; 62, transmission gear; 63, adjusting handle. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the related drawings. The drawings show embodiments of the present application. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0022] In conjunction with Figures 1-4 As shown in the drawings, a commercial vehicle quick-change brake structure comprises:

[0023] A brake disc 1 is a main frame of the brake;

[0024] A wedge assembly 2 is arranged on the top of the brake disc 1 and is used for clutch locking and backstop action;

[0025] A gas chamber 3 is in communication with the wedge assembly 2 and is arranged on the back of the brake disc 1 so as to remotely control the expansion or contraction of the wedge assembly 2 by the worker;

[0026] A fixed seat 4 is arranged on the bottom of the front of the brake disc 1, is arranged in a rectangular shape, is fixedly connected to the brake disc 1 through bolts, is hollow inside, and is provided with two fixed shafts 41;

[0027] Two brake shoes 5 are arranged in an arc shape, the tail ends of which are rotatably connected to the fixed shafts 41 inside the fixed seat 4, and the top ends of the two brake shoes 5 are respectively detachably fixedly connected to the two ends of the wedge assembly 2, so that the expansion or contraction of the two brake shoes 5 is controlled by the wedge assembly 2;

[0028] An adjusting assembly 6 is arranged inside the fixed seat 4 and is used to assist the brake shoes 5 in positioning.

[0029] Specifically, in the embodiment, a connecting portion 51 is further arranged on the side wall close to the top end of the brake shoe 5, and a spring is transversely arranged between the two brake shoes 5 through the connecting portion 51. When the worker controls the brake shoes 5 to expand and complete braking by using the wedge assembly 2, the spring can make the two brake shoes 5 return to the initial position by using the pulling force, so as to perform the second braking work.

[0030] However, in the actual assembly process, the two brake shoes 5 are first installed on the brake disc 1, the shoe supporting blocks at the other ends of the brake shoes 5 are clamped into the locking block grooves of the wedge assembly 2, and finally the spring is installed between the two brake shoes 5. Since the shoe supporting blocks at the other ends of the brake shoes 5 are not fixedly connected to the wedge assembly 2, the lower brake shoe 5 will be opened due to gravity, which is not convenient for the installation of the spring.

[0031] Therefore, the adjusting assembly 6 is arranged inside the fixed seat 4 in the embodiment, and is combined with the side walls of the two brake shoes 5 by using the adjusting structure, so that the two brakes can be driven to deflect towards the center at the same time, and the inward positioning work is completed.

[0032] Based on the above structure requirements, the adjusting assembly 6 comprises two movable shafts 61 arranged inside the fixed seat 4, the two ends of the two movable shafts 61 are respectively provided with ball bearings, and the ball bearings are rotatably connected with the inside of the fixed seat 4, and the end of one of the fixed shafts 41 extends out of the outer wall of the fixed seat 4 and is provided with a hexagonal through hole on the end face.

[0033] The hexagonal through hole is inserted with an adjusting handle 63, the top end of the adjusting plate is provided with a knob, and the outer side wall is provided with a non-slip pad, so that the staff can rotate the knob, and the adjusting handle 63 can also be replaced by a suitable hexagonal wrench.

[0034] In addition, the outer side walls of the two movable shafts 61 are fixedly provided with transmission gears 62, the two transmission gears 62 are meshed with each other, and the bottom end faces of the two brake shoes 5 are also provided with arc-shaped surfaces, and the arc-shaped surfaces are provided with transmission teeth matched with the transmission gears, the transmission teeth are meshed with the transmission gears 62, and the transmission structure such as 3 and Figure 4 is formed.

[0035] When the two brake shoes 5 need to be deflected inward, that is, when the brake shoes 5 are installed with springs, as shown in Figure 3 , one of the transmission gears 62 is twisted outward, and the brake shoes 5 are deflected inward, so that the two brake shoes 5 are simultaneously moved inward to the specified position, and the inward positioning function is realized;

[0036] When the installation is completed, the adjusting handle 63 is taken out, and when the staff pushes the brake shoes 5 to the two sides by the wedge block assembly 2, the two brake shoes 5 are simultaneously expanded outward, forcing the two transmission gears 62 in the middle to deflect towards the center, as shown in Figure 4 , and after deflection, the spring is retracted to the initial position, and in the whole process, the adjusting assembly 6 does not affect the deflection of the brake shoes 5, and can also ensure that the deflection angles of the two brake shoes 5 are the same, so that the side walls of the two brake shoes 5 are in contact with the inner wall of the brake disc 1 at the same time, and the wear degree of the outer wall is similar.

[0037] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the present application examples.

Claims

1. A commercial vehicle quick change brake structure comprising a brake disc (1), a wedge assembly (2) and an air chamber (3), characterized in that, The front of the brake disc (1) is provided with a fixed seat (4), both sides of the fixed seat (4) are respectively provided with brake shoes (5), and both sides of the inside of the fixed seat (4) are respectively provided with fixed shafts (41), the tail ends of the two brake shoes (5) extend to the inside of the fixed seat (4) and are movably connected with the fixed shafts (41), the top ends of the two brake shoes (5) are connected through the wedge block assembly (2), and the air chamber (3) is arranged on the back of the brake disc (1) and communicates with the wedge block assembly (2); The middle position of the fixed seat (4) is also provided with an adjusting assembly (6), and the adjusting assembly (6) is in transmission engagement with the side walls of the two brake shoes (5) respectively.

2. The commercial vehicle quick change brake structure as claimed in claim 1, wherein, The brake shoe (5) is arranged in an arc shape and is provided with a connecting portion (51) on the end face away from the fixed seat (4), and the two connecting portions (51) are used to be connected and fixed with both ends of the spring.

3. The commercial vehicle quick change brake structure as set forth in claim 1, characterized in that, The adjusting assembly (6) comprises a movable shaft (61) arranged in the inside of the fixed seat (4), the movable shaft (61) is provided with two roots and makes both ends rotatably connected with the inner wall of the fixed seat (4) through ball bearings, one of the movable shafts (61) extends outward to the outside of the fixed seat (4) and is connected with an adjusting handle (63).

4. The commercial vehicle quick change brake structure of claim 3, wherein, The end face center of the movable shaft (61) extending to the outside is also provided with an internal hexagonal through hole, the lower half of the adjusting handle (63) is inserted into the inside of the movable shaft (61), and the upper half of the adjusting handle (63) is provided with a knob and is provided with a non-slip pad on the side wall.

5. The commercial vehicle quick change brake structure of claim 4, wherein, The outer side walls of the two movable shafts (61) are also respectively fixedly provided with transmission gears (62), and the two transmission gears (62) are in meshing engagement with each other.

6. The commercial vehicle quick change brake structure of claim 5, wherein, The end of the brake shoe (5) movably connected with the fixed shaft (41) is arranged in an arc shape and is provided with a transmission tooth on the arc surface, and the transmission teeth of the end portions of the two brake shoes (5) are respectively in meshing engagement with the two transmission gears (62).

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