Corrosion-resistant brake chamber

Abstract

The utility model relates to the technical field of brake air chambers, in particular to a corrosion-resistant brake air chamber which comprises a brake air chamber cylinder body, an air inlet pipe is communicated with the bottom of the brake air chamber cylinder body, a mounting plate is sleeved outside the air inlet pipe, a supporting rod is fixed on the surface of the mounting plate, a rotatable tooth blocking plate is sleeved outside the supporting rod, and the tooth blocking plate is fixed on the surface of the mounting plate. A brake piston is connected into the brake air chamber cylinder body in a sliding mode, and a detachable piston rod is arranged at the end of the brake piston. According to the corrosion-resistant brake chamber, the tooth blocking plate capable of being expanded or closed is arranged, before the corrosion-resistant brake chamber is not used, the tooth blocking plate is in a closed state, dirt can be prevented from entering the brake chamber through the air inlet to affect the service life of the air chamber cylinder body, the tooth blocking plate is expanded to be connected with an air pipe for use during use, and the practicability of the corrosion-resistant brake chamber is improved; and an anti-corrosion coating is arranged for anti-corrosion treatment, the piston rod damaged after corrosion can be detached and replaced, and the using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brake air chambers, in particular to a corrosion-resistant brake air chamber. Background Art

[0002] The function of the brake chamber is to convert the pressure of compressed air into mechanical force to rotate the brake camshaft to achieve braking action. When the car brakes, air enters the brake chamber from the air inlet, and the diaphragm is deformed under the action of air pressure, pushing the piston rod, and driving the brake adjustment arm to rotate the brake cam, pressing the brake shoe friction plate against the brake drum to produce braking.

[0003] At present, the air inlets of brake air chambers on the market are mostly directly exposed to the outside. However, before the air inlet is connected to the air pipe, dirt will enter the brake air chamber through the air inlet, thereby affecting the service life of the air chamber cylinder. In addition, the piston rod has poor corrosion resistance and is easily corroded and damaged after long-term use, with a short service life. Moreover, it is inconvenient to replace it after damage, which reduces the use effect. Utility Model Content

[0004] The purpose of the present utility model is to provide a corrosion-resistant brake air chamber to solve the problem mentioned in the above background technology that the existing brake air chamber is not convenient for protecting the air inlet, resulting in dirt entering the brake air chamber through the air inlet and causing damage, affecting the service life of the air chamber cylinder, and the corrosion resistance is poor and it is not convenient to replace. In order to achieve the above purpose, the present utility model provides the following technical solutions: a corrosion-resistant brake air chamber, including a brake air chamber cylinder, the bottom of the brake air chamber cylinder is connected to the air inlet pipe, the outside of the air inlet pipe is sleeved with a mounting plate, the surface of the mounting plate is fixed with a support rod, the outside of the support rod is sleeved with a rotatable tooth plugging plate, the inside of the brake air chamber cylinder is slidably connected with a brake piston, and the end of the brake piston is provided with a detachable piston rod.

[0005] Preferably, a fixing plate is fixed to the end of the mounting plate, a rotating rod is rotatably connected to the inside of the fixing plate, a rocker is fixed to the end of the rotating rod, a gear is fixedly sleeved on the outside of the rotating rod, a tooth plate is meshed with the side end of the gear, a connecting plate is fixed to the surface of the tooth plate, a rack is fixed to the bottom of the connecting plate, and a limit strip is installed at the bottom of the rack.

[0006] Preferably, an annular groove is provided on the surface of the mounting plate to facilitate the sliding of the rack, and a plurality of teeth are provided on the outer wall of the tooth blocking plate, and the tooth blocking plate is meshed with the rack.

[0007] Preferably, three racks are provided, and the three racks are connected to the tooth plate via a connecting plate, and limiting strips are installed on the bottom of the three racks and the tooth plate.

[0008] Preferably, the outer surface of the brake piston is provided with an anti-corrosion coating.

[0009] Preferably, threaded rods are threadedly connected at both ends of the brake piston, blocks are fixed at the ends of the threaded rods, and empty grooves are opened on both sides of the piston rod to facilitate the sliding of the blocks, and the inner diameter of the empty grooves fits the outer diameter of the blocks.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the utility model, when the blocking plate is not in use, it is in a fitted and closed state. The manually rotating rocker drives the rotating rod to rotate, and the gear outside it rotates immediately and meshes with the toothed plate. The toothed plate rotates under force, and the rack installed through the connecting plate rotates immediately. During the rotation, the toothed plate and the rack mesh with the toothed blocking plate. The toothed blocking plate rotates around the support rod under force, thereby exposing the air inlet at the bottom of the intake pipe for connection with the air pipe. This arrangement prevents dirt from entering the brake air chamber through the air inlet before use, thereby affecting the service life of the air chamber cylinder.

[0012] In the utility model, an anti-corrosion coating is provided for anti-corrosion treatment. However, the piston rod will still be corroded and damaged after long-term use. When damaged, the blocking block is manually rotated to drive the threaded rod to rotate to the same vertical plane as the empty groove, and the piston rod is pulled so that the empty grooves at both ends slide out along the blocking block, so that the two can be quickly disassembled and the corroded piston rod can be replaced, thereby improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a schematic diagram of the overall isometric structure of the utility model;

[0015] Figure 3 For the utility model Figure 2 Schematic diagram of the back structure of the middle air intake pipe, the mounting plate and the tooth plugging plate connecting the shaft;

[0016] Figure 4 For the utility model Figure 2 Schematic diagram of the connection structure between the brake piston and the piston rod.

[0017] In the figure:

[0018] 1. Brake air chamber cylinder;

[0019] 2. Intake pipe;

[0020] 3. Mounting plate; 31. Annular groove;

[0021] 4. Support rod;

[0022] 5. Tooth blocking plate; 51. Fixed plate; 52. Rotating rod; 53. Rocker; 54. Gear; 55. Tooth plate; 56. Connecting plate; 57. Rack; 58. Limiting strip;

[0023] 6. brake piston; 61. threaded rod; 62. blocking block;

[0024] 7. Piston rod; 71. Empty groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 to 4 The utility model provides a technical solution: a corrosion-resistant brake air chamber, including a brake air chamber cylinder body 1, the bottom of the brake air chamber cylinder body 1 is connected to an air intake pipe 2, the outside of the air intake pipe 2 is sleeved with a mounting plate 3, a support rod 4 is fixed to the surface of the mounting plate 3, the outside of the support rod 4 is sleeved with a rotatable tooth plugging plate 5, the inside of the brake air chamber cylinder body 1 is slidably connected to a brake piston 6, and the end of the brake piston 6 is provided with a detachable piston rod 7.

[0027] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a fixing plate 51 is fixed to the end of the mounting plate 3, a rotating rod 52 is rotatably connected inside the fixing plate 51, a rocker 53 is fixed to the end of the rotating rod 52, a gear 54 is fixedly sleeved on the outside of the rotating rod 52, a toothed plate 55 is meshed on the side end of the gear 54, a connecting plate 56 is fixed to the surface of the toothed plate 55, a rack 57 is fixed to the bottom of the connecting plate 56, and a limiting strip 58 is installed at the bottom of the rack 57.

[0028] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the surface of the mounting plate 3 is provided with an annular groove 31 for facilitating the sliding of the rack 57 , and the outer wall of the tooth blocking plate 5 is provided with a plurality of teeth, and the tooth blocking plate 5 is meshed with the rack 57 .

[0029] It should be noted that the limit bar 58 is placed in the annular groove 31 on the surface of the mounting plate 3 and rotates to support the gear plate 55 during rotation, thereby preventing the gear plate 55 from idling and reducing the stability of use.

[0030] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, there are three racks 57 , and the three racks 57 are connected to the tooth plate 55 via a connecting plate 56 . Limiting bars 58 are installed at the bottom of the three racks 57 and the tooth plate 55 .

[0031] It should be noted that there are three racks 57, which mesh with the toothed plugging plate 5. Teeth are provided on the outer periphery of the plugging plate, which mesh with the tooth grooves in the rack 57. When the rack 57 rotates, it will mesh with the toothed plugging plate 5, and the toothed plugging plate 5 will be forced to rotate in mesh with it. The toothed plugging plate 5 then rotates around the support rod 4 and then rotates and expands, so that the air inlet at the bottom of the intake pipe 2 is exposed to facilitate the connection with the air pipe. There are four toothed plugging blocks 62 and three racks 57. A connecting plate 56 is installed between the three racks 57 and the toothed plate 55, so that the three racks 57 can rotate at the same time and drive the four toothed plugging plates 5 to rotate at the same time.

[0032] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the outer surface of the brake piston 6 is provided with an anti-corrosion coating.

[0033] It should be noted that the anti-corrosion coating is made of phenolic fiber as the main raw material and epoxy resin modified furfuryl alcohol resin as the auxiliary material. It is evenly applied to the brake piston 6 and solidified into a film on the outer periphery of the piston rod 7 to form an anti-corrosion coating and then perform anti-corrosion treatment on the brake piston 6 to avoid corrosion damage due to long-term use and thus affect the service life.

[0034] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, threaded rods 61 are threadedly connected at both ends of the brake piston 6, and blocks 62 are fixed at the ends of the threaded rods 61. Empty grooves 71 are opened on both sides of the piston rod 7 to facilitate the sliding of the blocks 62, and the inner diameter of the empty grooves 71 fits the outer diameter of the blocks 62.

[0035] It should be noted that the opening at the bottom of the air inlet pipe 2 fits with the block 62, and the four block 62 are rotated to expose it for easy use. When not in use, the block 62 is in a tightly closed state, thereby preventing dirt from entering.

[0036] The use method and advantages of the utility model: When the corrosion-resistant brake air chamber is working, the working process is as follows:

[0037] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, before using the brake air chamber, phenolic fiber and epoxy resin modified furfuryl alcohol resin are first mixed to form an anti-corrosion coating, which is evenly brushed on the brake piston 6 and cured on the periphery of the piston rod 7 to form an anti-corrosion coating, thereby performing an anti-corrosion treatment on the brake piston 6 to avoid corrosion damage caused by long-term use and thus affecting the service life;

[0038] Then, the rocker 53 is manually rotated to drive the rotating rod 52 to rotate. When the rotating rod 52 rotates, the gear 54 outside it rotates immediately and meshes with the toothed plate 55 at the side end. The toothed plate 55 rotates under force. At the same time, the three racks 57 installed through the connecting plate 56 rotate immediately. During the rotation process, the inner tooth end of the toothed plate 55 meshes with the toothed blocking block 62, and the rack 57 also meshes with the toothed blocking plate 5, so that the four toothed blocking plates 5 are simultaneously rotated around the support rod 4 under force, thereby exposing the air inlet at the bottom of the air inlet pipe 2 for connection with the air pipe. Therefore, the air inlet pipe 2 is in a closed state before it is not needed, which can prevent dirt from entering the brake air chamber through the air inlet and thus affecting the service life of the air chamber cylinder body, thereby improving practicality.

[0039] When the piston rod 7 is corroded and damaged after long-term use and needs to be replaced, the block 62 is manually rotated to drive the threaded rod 61 to rotate, and the block 62 is rotated to be in the same vertical plane as the empty groove 71. Then the piston rod 7 is pulled out and the piston rod 7 slides outward under the force. At the same time, the empty grooves 71 at both ends of the piston rod 7 slide out of the block 62, so that the piston rod 7 and the brake piston 6 can be quickly disassembled to facilitate the disassembly and replacement of the piston rod 7 that has been corroded and damaged, thereby improving the use effect.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A corrosion-resistant brake air chamber, comprising a brake air chamber cylinder (1), characterized in that: The bottom of the brake air chamber cylinder body (1) is connected to an air intake pipe (2), the outside of the air intake pipe (2) is sleeved with a mounting plate (3), a support rod (4) is fixed to the surface of the mounting plate (3), the outside of the support rod (4) is sleeved with a rotatable tooth block plate (5), the inside of the brake air chamber cylinder body (1) is slidably connected to a brake piston (6), and the end of the brake piston (6) is provided with a detachable piston rod (7).

2. A corrosion-resistant brake air chamber according to claim 1, characterized in that: A fixing plate (51) is fixed at the end of the mounting plate (3), a rotating rod (52) is rotatably connected inside the fixing plate (51), a rocker (53) is fixed at the end of the rotating rod (52), a gear (54) is fixedly sleeved outside the rotating rod (52), a toothed plate (55) is meshed at the side end of the gear (54), a connecting plate (56) is fixed on the surface of the toothed plate (55), a rack (57) is fixed at the bottom of the connecting plate (56), and a limit bar (58) is installed at the bottom of the rack (57).

3. A corrosion-resistant brake air chamber according to claim 2, characterized in that: The surface of the mounting plate (3) is provided with an annular groove (31) for facilitating the sliding of the rack (57), the outer wall of the tooth blocking plate (5) is provided with a plurality of teeth, and the tooth blocking plate (5) is meshed with the rack (57).

4. A corrosion-resistant brake chamber according to claim 2, characterized in that: There are three racks (57), and the three racks (57) are connected to the tooth plate (55) via a connecting plate (56). Limiting strips (58) are installed at the bottom of the three racks (57) and the tooth plate (55).

5. The corrosion-resistant brake chamber according to claim 1, characterized in that: The outer surface of the brake piston (6) is provided with an anti-corrosion coating.

6. The corrosion-resistant brake chamber according to claim 1, characterized in that: The two ends of the brake piston (6) are threadedly connected to a threaded rod (61), and a block (62) is fixed to the end of the threaded rod (61). Both sides of the piston rod (7) are provided with a groove (71) for facilitating the sliding of the block (62), and the inner diameter of the groove (71) is in close contact with the outer diameter of the block (62).

Images