Adjusting spring for brake expander

Abstract

The utility model discloses the adjusting elastic sheet of expander for brake, and the expander includes adjusting bolt and the stop circle of setting in the outside of adjusting bolt along the circumference, and the stop circle is equipped with a plurality of stop; The adjusting elastic sheet includes base and overhanging elastic sheet, and the base is the annular of one side opening, and the upper surface of base is equipped with at least one convex point, and the convex point can be clamped in the corresponding stop, and the overhanging elastic sheet one end is connected to the base far from the opening one side, and the other end is the overhanging shape.

Description

Technical Field

[0001] This utility model relates to the field of braking technology for engineering vehicles, specifically to the adjusting spring of a brake expander. Background Technology

[0002] Brakes in construction machinery or vehicles typically use spreaders to transmit braking force. In the process of adjusting the brake clearance using the spreader, a component called an adjusting spring is usually used. The adjusting spring achieves the locking function, and the locking relationship is released under a sufficiently large external force. (See reference...) Figure 1 To achieve the gap adjustment function, the expander typically has a stop ring 2 on the outside of the adjusting bolt 1. Multiple stop rings 3 are evenly distributed on the stop ring 2. Current adjusting springs, such as... Figure 2 As shown, both ends of the spring are bent inward, and protrusions matching the stop are provided on the bent parts. The locking function is achieved through the cooperation of the protrusions and the stop, and it can rotate under a certain external force. There is a hollow part in the middle of the spring, which includes a circle in the middle and strips on both sides of the circle. The circle corresponds to the adjusting bolt, and the strips correspond to the grooves on the end face of the adjusting bolt, which are used to limit the movement of the brake shoe.

[0003] However, in practice, the aforementioned adjustment spring is very difficult to assemble. It requires the spring itself to undergo a large deformation in order to be successfully assembled. Workers may even need to use external force during assembly, which affects assembly efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an adjusting spring for a brake expander that is easy to assemble and has a more reasonable structure, so as to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjusting spring for a brake expander, the expander including an adjusting bolt and a stop ring disposed circumferentially outside the adjusting bolt, the stop ring having a plurality of stops; the adjusting spring including a base and a cantilever spring, the base being an annular shape with an opening on one side, the upper surface of the base having at least one protrusion, the protrusion being able to be engaged in the corresponding stop; one end of the cantilever spring being connected to the side of the base away from the opening, the other end being cantilevered.

[0006] Preferably, the cantilever spring is integrally formed with the base.

[0007] Preferably, the base has four protrusions evenly distributed on it, which helps to improve stability when locking.

[0008] Preferably, the minimum gap at the opening of the base is slightly smaller than the diameter of the adjusting bolt.

[0009] Preferably, the outer edges of the base extend outward and bend downward, increasing strength while protecting the leather case below.

[0010] Compared with the prior art, the advantages of this utility model are as follows: without changing the function of the adjusting spring, this utility model improves the structure of the bottom and the expansion device. The improved adjusting spring is easier to assemble, and the base and the stop are more secure and stronger. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of an existing expander structure.

[0012] Figure 2 This is a schematic diagram of the existing adjustment spring structure.

[0013] Figure 3 This is a schematic diagram of the expander structure of this utility model.

[0014] Figure 4 This is a schematic diagram of the adjusting spring structure of this utility model.

[0015] Figure 5 This is a perspective view of the adjustment spring of this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following embodiments will provide a more detailed description of this utility model.

[0017] Example: Adjusting spring of brake expander, refer to Figure 3 In this embodiment, the expander uses the existing expander structure. The outer edge of the adjusting bolt 1 is provided with a stop ring 2, and a number of stops 3 are evenly distributed on the stop ring 2.

[0018] In this embodiment, the adjusting spring 4 includes a base 5 and a cantilever spring 6. The base 5 is a circular annular piece with an opening on one side. The upper surface of the base has four protrusions 7, evenly distributed around the center. After assembly, the four protrusions 7 can be locked into the corresponding stops 3, realizing the locking function of the adjusting spring 4. One end of the cantilever spring 6 is integrally bent and formed on the side of the base 5 away from the opening, and the other end is cantilevered. The hollow structure and bending shape on the cantilever spring 6 are the same as the existing structure, maintaining its basic adjustment function.

[0019] In the above structure, the minimum gap at the opening of the base 5 is slightly smaller than the diameter of the adjusting bolt 1. During installation, a certain amount of external force can be used to fit the base over the adjusting bolt 1 and prevent it from coming off.

[0020] In this embodiment, the outer edges of both sides of the base 5 extend outward and bend downward at a certain angle, such as about 45°. On the one hand, this can increase the strength of the base 5, and on the other hand, it can make the bent part form a structure similar to a protective cover, which can provide a certain degree of protection for the leather sleeve below.

[0021] In this embodiment, during assembly, the opening of the base 5 is aligned with the bottom of the stop ring 2. A certain external force is used to lift the free end of the suspension spring 6 upward a certain distance. Then, the base 5 is pushed so that the adjusting bolt 1 is inserted into the hollow circular area in the middle of the base 5. At the same time, the four protrusions 7 are inserted into the corresponding stop 3. After the suspension spring 6 is released, the end of the adjusting bolt 1 is located in the hollow area in the middle of the suspension spring 6, thus completing the assembly.

[0022] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An adjusting spring for a brake expander, the expander comprising an adjusting bolt and a stop ring disposed circumferentially outside the adjusting bolt, the stop ring having a plurality of stops; characterized in that, The adjusting spring includes a base and a cantilever spring. The base is an annular shape with an opening on one side, and the upper surface of the base is provided with at least one protrusion, which can be locked in the corresponding stop. One end of the cantilever spring is connected to the side of the base away from the opening, and the other end is cantilevered.

2. The adjusting spring of the brake expander according to claim 1, characterized in that, The cantilever spring is integrally formed with the base.

3. The adjusting spring of the brake expander according to claim 1, characterized in that, The base has four protrusions evenly distributed on it.

4. The adjusting spring of the brake expander according to claim 1, characterized in that, The minimum gap at the opening of the base is slightly smaller than the diameter of the adjusting bolt.

5. The adjusting spring of the brake expander according to claim 1, characterized in that, The outer edges of the base extend outwards and bend downwards on both sides.

Images