Double-diaphragm spring brake chamber convenient to install

Abstract

The utility model relates to a double diaphragm spring brake chamber convenient to install, which comprises an upper shell, a middle shell and a lower shell are sequentially arranged below the upper shell, a first cavity is arranged between the upper shell and the middle shell, a first diaphragm and an energy storage spring are arranged in the first cavity, and a second diaphragm is arranged in the lower shell. One end of the energy storage spring is fixedly connected with a first diaphragm through a first pressing piece, a second cavity is formed between the first diaphragm and the middle shell, a first push rod is fixedly connected to the position, in the second cavity, of the middle of one side of the first diaphragm, a third cavity is formed between the middle shell and the lower shell, a second diaphragm is arranged in the third cavity, and a second push rod is fixedly connected to the position, in the third cavity, of one side of the first diaphragm. The side, away from the first push rod, of the second membrane is fixedly connected with a second push rod, first reset springs are arranged in the second cavity and the third cavity correspondingly, and the upper shell, the middle shell and the lower shell are connected through a plurality of rapid locking mechanisms. The shell is reasonable in structure, and rapid positioning and installation can be achieved through the rapid locking mechanism on the edge of the shell.

Description

Technical Field

[0001] The utility model relates to the field of brake chamber installation, in particular to a double diaphragm spring brake chamber which is convenient for installation. Background Technique

[0002] The double diaphragm spring brake chamber is composed of two independent diaphragm chambers, which are independently controlled by the service brake and the parking brake or the emergency brake elements respectively. By converting the pressure of compressed air into the mechanical force that makes the brake camshaft rotate, the braking action is realized. When the existing brake chamber is installed, it is difficult to align the edges of the housing, the time cost is relatively high, and it may cause skewing between the housings, affecting the service life and the use effect of the brake chamber. In addition, the existing brake chamber is more cumbersome to disassemble, and the push rod in the brake chamber may wear faster during frequent use. Content of the Utility Model

[0003] In order to overcome the deficiencies of the above-mentioned existing problems, the utility model provides a double diaphragm spring brake chamber which is convenient for installation.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a double diaphragm spring brake chamber which is convenient for installation, including an upper housing, a middle housing and a lower housing are sequentially arranged below the upper housing. A first cavity is formed between the upper housing and the middle housing. A first diaphragm and a energy storage spring are arranged in the first cavity. One end of the energy storage spring is fixedly connected with the upper housing, and the other end is fixedly connected with the first diaphragm through a first pressing piece. A second cavity is formed between the first diaphragm and the middle housing. A first push rod is fixedly connected in the middle on one side of the first diaphragm in the second cavity. A third cavity is formed between the middle housing and the lower housing. A second diaphragm is arranged in the third cavity. A second push rod is fixedly connected to the side of the second diaphragm far away from the first push rod. First return springs are arranged in both the second cavity and the third cavity. The upper housing, the middle housing and the lower housing are all connected through a plurality of quick locking mechanisms.

[0005] Preferably, a first pressure port and a second pressure port which are respectively connected with the second cavity and the third cavity are arranged on one side of the middle housing.

[0006] Preferably, the quick locking mechanism is located below the edge of the housing. The quick locking mechanism includes a fixed block fixedly connected to the upper housing. On one side of the fixed block away from the central axis of the brake chamber, a hollow bracket is fixedly connected. Inside the hollow bracket, there is a pressing block connected by a second return spring. A groove that fits the fixed block and the hollow bracket is formed inside the edge of the lower housing. A limiting hole through which the pressing block can pass is formed on one side of the groove. Both the pressing block and the limiting hole face outward. During use, the installation angle can be quickly positioned through the groove. By pressing the upper and lower housings together, the pressing block retracts inward under the action of the second return spring. When the pressing block is located at the limiting hole, the pressing block extends outward under the action of the second return spring to complete the fixation of the housing. When disassembly is required, pressing the pressing block inward can quickly disassemble the housing.

[0007] Preferably, the end of the pressing block extending out of the hollow bracket is arc-shaped.

[0008] Preferably, mutually fitting wavy card slots are provided at the joints between the upper housing and the middle housing, and between the middle housing and the lower housing. By means of the wavy card slots, the contact area with the diaphragm is increased, and the fixation effect on the diaphragm is strengthened.

[0009] Preferably, clamping rings for strengthening fixation are sleeved outside the joints of the housing, and sealing rings are provided inside the clamping rings.

[0010] Preferably, self-lubricating bushings are provided at the joints between the middle housing and the first push rod and between the lower housing and the second push rod. During use, the wear of the push rod can be effectively reduced, and the service life of the brake chamber can be increased.

[0011] The beneficial effects of the present utility model are as follows: Quick positioning and installation can be achieved through the quick locking mechanism at the edge of the housing. In addition, the housing can be conveniently disassembled through the quick locking mechanism, and the self-lubricating bushing can effectively improve the service life of the push rod. Mutually fitting wavy card slots are provided at the joints of the housing edge. By means of the wavy card slots, the contact area with the diaphragm is increased, the fixation effect on the diaphragm is strengthened, and the possibility of the diaphragm detaching during use is reduced. Description of the Drawings

[0012] The present utility model will be further described below with reference to the drawings and embodiments.

[0013] Figure 1 is a cross-sectional view of the present utility model;

[0014] Figure 2 is Figure 1 a schematic diagram of the use of the quick locking mechanism at position A in

[0015] Figure 3 a schematic diagram of the upper mechanism of the present utility model;

[0016] Figure 4 It is a schematic diagram of the lower mechanism of the present utility model; Specific implementation manner

[0017] All features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0018] Any feature disclosed in this specification (including any additional claims, abstract, and drawings), unless specifically stated, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0019] Such as Figures 1-3 A double diaphragm spring brake chamber convenient for installation as shown, including an upper housing 1, a middle housing 2 and a lower housing 3 are sequentially arranged below the upper housing 1. A first cavity 4 is formed between the upper housing 1 and the middle housing 2. A first diaphragm 5 and a storage spring 6 are arranged in the first cavity 4. One end of the storage spring 6 is fixedly connected to the upper housing 1, and the other end is fixedly connected to the first diaphragm 5 through a first pressing piece 7. A second cavity 12 is formed between the first diaphragm 5 and the middle housing 2. A first push rod 8 is fixedly connected to the middle of one side of the first diaphragm 5 in the second cavity 12. A third cavity 13 is formed between the middle housing 2 and the lower housing 3. A second diaphragm 10 is arranged in the third cavity 13. A second push rod 11 is fixedly connected to the side of the second diaphragm 10 away from the first push rod 8. First return springs 14 are arranged in both the second cavity 12 and the third cavity 13. The upper housing 1, the middle housing 2 and the lower housing 3 are all connected through a plurality of quick locking mechanisms 15.

[0020] A first pressure inlet and a second pressure inlet respectively connected to the second cavity 12 and the third cavity 13 are opened on one side of the middle housing 2.

[0021] The quick locking mechanism 15 is located below the edge of the housing. The quick locking mechanism 15 includes an upper mechanism 23 and a lower mechanism 24. The upper mechanism 23 includes a fixed block 16 fixedly connected to the upper housing. On one side of the fixed block 16 away from the central axis of the brake chamber, a hollow bracket 17 is fixedly connected. Inside the hollow bracket 17, a pressing block 19 connected by a second return spring 18 is arranged. The lower mechanism 24 includes a groove in the lower housing edge that fits with the fixed block 16 and the hollow bracket 17. A limiting hole 21 through which the pressing block 19 can pass is opened on one side of the groove. Both the pressing block 19 and the limiting hole 21 face outward. During use, the installation angle can be quickly positioned through the groove. By pressing the upper and lower housings together, the pressing block 19 retracts inward under the action of the second return spring 18. When the pressing block 19 is located at the limiting hole 21, the pressing block 19 extends outward under the action of the second return spring 18 to complete the fixation of the housing. When disassembly is required, pressing the pressing block 19 inward can quickly disassemble the housing.

[0022] One end of the pressing block 19 extending out of the hollow bracket 17 is arc-shaped. During installation, the pressing block 19 will be more smoothly squeezed inward under the action of the arc surface.

[0023] At the connection between the upper housing 1 and the middle housing 2 and at the connection between the middle housing 2 and the lower housing 3, mutually fitting wavy card slots 22 are provided. By means of the wavy card slots 22, the contact area with the diaphragm is increased, and the fixation effect on the diaphragm is strengthened.

[0024] A clamp 20 for strengthening fixation is sleeved outside the connection of the housing. A sealing ring is provided inside the clamp 20.

[0025] Self-lubricating bushings 9 are provided at the connection between the middle housing 2 and the first push rod 8 and at the connection between the lower housing 3 and the second push rod 11. During use, it can effectively reduce the wear of the push rod and increase the service life of the brake chamber.

[0026] This design scheme is ingenious. Through the quick locking mechanism at the housing edge, quick positioning and installation can be achieved. In addition, the housing can be conveniently disassembled through the quick locking mechanism, and the self-lubricating bushing can effectively improve the service life of the push rod. Mutually fitting wavy card slots are provided at the connection of the housing edge. By means of the wavy card slots, the contact area with the diaphragm is increased, the fixation effect on the diaphragm is strengthened, and the possibility of the diaphragm detaching during use is reduced.

[0027] The present utility model is not limited to the foregoing specific embodiments. The present utility model extends to any new feature disclosed in this specification or any new combination, as well as any new method or process step disclosed or any new combination.

Claims

1. A double diaphragm spring brake chamber that is easy to install, characterized in that: It comprises an upper shell (1), a middle shell (2) and a lower shell (3) are arranged in sequence below the upper shell (1), A first cavity (4) is formed between the upper shell (1) and the middle shell (2). A first diaphragm (5) and an energy storage spring (6) are arranged in the first cavity (4). One end of the energy storage spring (6) is fixedly connected to the upper shell (1), and the other end is fixedly connected to the first diaphragm (5) via a first pressing plate (7). A second cavity (12) is formed between the first diaphragm (5) and the middle shell (2). A first push rod (8) is fixedly connected in the middle of the second cavity (12) and one side of the first diaphragm (5). A third cavity (13) is formed between the middle shell (2) and the lower shell (3). A second diaphragm (10) is arranged in the third cavity (13). A second push rod (11) is fixedly connected to the side of the second diaphragm (10) away from the first push rod (8). A first return spring (14) is arranged in both the second cavity (12) and the third cavity (13). The upper shell (1), the middle shell (2) and the lower shell (3) are connected via a plurality of quick locking mechanisms (15).

2. The double diaphragm spring brake chamber that is easy to install according to claim 1, characterized in that: A first pressurizing port and a second pressurizing port respectively connected to the second cavity (12) and the third cavity (13) are provided on one side of the middle shell (2).

3. The double diaphragm spring brake chamber that is easy to install according to claim 1, characterized in that: The quick locking mechanism (15) is located below the edge of the shell, and comprises a fixed block (16) fixedly connected to the upper shell, a hollow bracket (17) fixedly connected to the side of the fixed block (16) away from the central axis of the brake air chamber, a pressing block (19) connected via a second return spring (18) is arranged in the hollow bracket (17), a groove matching with the fixed block (16) and the hollow bracket (17) is opened in the edge of the lower shell, and a limiting hole (21) for the pressing block (19) to pass through is opened on one side of the groove, and the pressing block (19) and the limiting hole (21) are both facing outwards.

4. The double diaphragm spring brake chamber that is easy to install according to claim 3, characterized in that: One end of the pressing block (19) extending out of the hollow bracket (17) is in an arc shape.

5. The double diaphragm spring brake chamber that is easy to install according to claim 1, characterized in that: The connection points between the upper shell (1) and the middle shell (2), and between the middle shell (2) and the lower shell (3) are both provided with wavy grooves (22) that fit together.

6. The double diaphragm spring brake chamber that is easy to install according to claim 1, characterized in that: A self-lubricating guide sleeve (9) is provided at the connection point between the middle housing (2) and the first push rod (8) and at the connection point between the lower housing (3) and the second push rod (11).

Images