A unit brake cylinder assembly device and a unit brake cylinder assembly method

Abstract

This invention relates to the field of railway technology, and more particularly to a unit brake cylinder assembly device and a unit brake cylinder assembly method. The unit brake cylinder assembly device includes an inflatable foot switch and a connecting assembly. The inflatable foot switch has a first air inlet, a first air outlet, and a first air outlet, with the first air inlet for communication with an air source. The connecting assembly has a gas passage communicating with the first air outlet, and is used to connect to a connecting part so that the gas passage communicates with the brake cylinder body. When the inflatable foot switch is pressed, gas sequentially enters the brake cylinder body through the first air inlet, the first air outlet, and the gas passage, causing the booster cylinder piston to extend; when the inflatable foot switch is released, gas in the brake cylinder body is discharged through the gas passage, the first air outlet, and the first air outlet, causing the booster cylinder piston to retract. The unit brake cylinder assembly device provided in this application can significantly improve assembly efficiency.

Description

Technical Field

[0001] This invention relates to the field of railway technology, and in particular to a unit brake cylinder assembly device and a unit brake cylinder assembly method. Background Technology

[0002] The DAB unit brake cylinder is a key component in the integrated braking system for railway freight cars. It consists of two parts: a brake adjuster and a brake cylinder body, which are connected by a left-hand thread. The brake adjuster has an internal thread at its connecting end, with a limit stop and a flat control rod inside. The brake cylinder body has an external thread at its connecting end, with a booster piston inside, which has a groove.

[0003] During the assembly of the DAB unit brake cylinder, the brake cylinder body must first be inflated with air to extend the booster cylinder piston to the set position. Then, the brake adjuster is aligned with the brake cylinder body, ensuring that the limit stop and flat control lever inside the brake adjuster are accurately aligned and engaged in the slot on the booster cylinder piston. The brake adjuster is then rotated to engage with the threads of the brake cylinder body. During the thread tightening process, air must be vented from the booster cylinder piston, causing it to slowly retract as the threads gradually engage, until assembly is complete.

[0004] However, in related technologies, the above assembly process typically requires two people to work together: one person controls the air supply and exhaust operations, while the other rotates the control valve to tighten the threads. This division of labor, relying on manual coordination, results in low assembly efficiency. Summary of the Invention

[0005] This application provides a unit brake cylinder assembly device and a unit brake cylinder assembly method, which improves the technical problem of low assembly efficiency of unit brake cylinders in related technologies.

[0006] In a first aspect, this application provides a unit brake cylinder assembly device for assembling unit brake cylinders, the unit brake cylinder comprising a brake cylinder body having a booster piston and a connecting portion, characterized in that it includes: An inflatable foot switch has a first air inlet, a first air outlet and a first air outlet, wherein the first air inlet is used to connect to an air source; A connecting assembly having a gas passage communicating with the first air outlet, the connecting assembly being used to connect with the connecting part so that the gas passage communicates with the brake cylinder body; When the inflatable foot pedal is pressed, gas enters the brake cylinder body through the first air inlet, the first air outlet, and the gas passage in sequence, causing the booster cylinder piston to extend; when the inflatable foot pedal is released, the gas in the brake cylinder body is discharged through the gas passage, the first air outlet, and the first exhaust port, causing the booster cylinder piston to retract.

[0007] In some embodiments, the connecting assembly includes a connecting cylinder and a connector, the connector being connected to one side of the connecting cylinder, the connector having a connecting cavity and a connecting port communicating with the connecting cavity, the connecting port being for the connecting part to extend into the connecting cavity; the connecting cylinder includes a cylinder body and a piston rod disposed on the cylinder body, the cylinder body having a first communicating port on the side near the connector, the piston rod being telescopically disposed on the first communicating port, and the gas passage being disposed on the piston rod; When the piston rod extends from the cylinder body toward the side near the connector, the piston rod and the connector can jointly clamp the connecting part so that the gas passage communicates with the brake cylinder body.

[0008] In some embodiments, the connecting cavity has an abutment surface on the side away from the cylinder body, and the piston rod and the abutment surface together clamp the connecting portion.

[0009] In some embodiments, the piston rod includes a rod body and a clamping member, the gas passage is disposed on the rod body, the clamping part is disposed at one end of the rod body, and the clamping member and the connecting member jointly clamp the connecting part.

[0010] In some embodiments, the clamping member includes a clamping portion and a sealing portion, the sealing portion being disposed on the side of the clamping portion away from the rod body, and the sealing portion being used to contact the connecting portion.

[0011] In some embodiments, the connecting air cylinder further includes a piston, which is mounted on the piston rod and divides the interior of the cylinder into a first chamber and a second chamber. The unit brake cylinder assembly device further includes a foot switch and has a second air inlet, a second air outlet, a third air outlet, a second air outlet, and a third air outlet. The second air inlet is used to communicate with an air source, the second air outlet is communicated with the first chamber, and the third air outlet is communicated with the second chamber. When the foot switch is released, gas enters the first chamber sequentially through the second air inlet and the second air outlet, causing the piston rod to extend towards the side closer to the connector. The gas in the second chamber is then discharged through the third air outlet and the third exhaust outlet. When the foot switch is pressed, gas enters the second chamber sequentially through the second inlet and the third outlet, causing the piston rod to retract away from the connector. The gas in the first chamber is then discharged through the second outlet and the second exhaust port.

[0012] In some embodiments, the piston is mounted in the middle of the piston rod, the cylinder has a second communication port on the side away from the connector, and the piston rod is telescopically disposed in the second communication port.

[0013] In some embodiments, the unit brake cylinder assembly device further includes a three-way connector having a third air inlet, a fourth air outlet, and a fifth air outlet. The third air inlet is used to communicate with an air source, the fourth air outlet is communicated with the first air inlet, and the fifth air outlet is communicated with the second air inlet.

[0014] In some embodiments, the unit brake cylinder assembly device further includes a pressure regulating filter device, which is connected between the air source and the first air inlet.

[0015] Secondly, this application provides a method for assembling a unit brake cylinder, the method being implemented using the unit brake cylinder assembly device described above, wherein the unit brake cylinder further includes a brake adjuster, the brake adjuster having a limit stop and a control lever, and the assembly method comprising: The connecting assembly is connected to the connecting portion of the brake cylinder body so that the gas passage is in communication with the brake cylinder body; Step on the inflatable foot switch to extend the piston of the booster cylinder; The limit stop and the control lever are assembled into the slot of the booster cylinder piston, and the brake adjuster and the brake cylinder body are rotated so that the brake adjuster and the brake cylinder body are threadedly connected. After the booster cylinder piston contacts the inner cover of the brake adjuster, release the inflation foot switch to retract the booster cylinder piston; Continue rotating the brake adjuster and the brake cylinder body until the brake adjuster and the brake cylinder body are fully tightened, and the unit brake cylinder is assembled.

[0016] In some embodiments, the step prior to connecting the connecting assembly to the connection portion of the brake cylinder body includes: The air pressure is adjusted by a pressure regulating filter device.

[0017] In some embodiments, the step of adjusting the air pressure via the pressure regulating filter includes: The air pressure is adjusted to less than or equal to 80 kPa using a pressure regulating filter device.

[0018] In some embodiments, the step of connecting the connecting assembly to the connecting portion of the brake cylinder body includes: Step on the connecting foot switch to retract the piston rod away from the connector; The connecting portion of the brake cylinder body extends into the connecting cavity of the connector; wherein, the connecting assembly includes a connecting air cylinder and a connector, the connecting air cylinder includes a cylinder body and a piston rod disposed in the cylinder body, and the gas passage is disposed in the piston rod; Release the connecting foot switch to allow the piston rod to extend towards the side closer to the connector until the piston rod and the connector together clamp the connecting part, and the gas passage communicates with the brake cylinder body.

[0019] The beneficial effects of this application are as follows: In the unit brake cylinder assembly device and method provided in this application, the operator only needs to step on the inflation foot switch to inflate the brake cylinder body with air, causing the booster cylinder piston to extend to a preset position. Then, the operator can manually align and engage the limit stop and flat control rod inside the brake adjuster with the slot on the booster cylinder piston. During the threaded engagement of the brake adjuster and the brake cylinder body, the operator releases the inflation foot switch, and the brake cylinder body begins to exhaust air. The booster cylinder piston then slowly retracts until the brake adjuster and the brake cylinder body are fully tightened, completing the assembly of the unit brake cylinder.

[0020] The entire assembly process can be completed by one person. By using both hands and feet, the charging and venting operations and assembly actions can be coordinated and controlled without the need for additional personnel. This significantly improves assembly efficiency, reduces labor costs, and minimizes assembly errors caused by improper coordination among multiple operators. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0022] Figure 1 A schematic diagram of the assembly of the unit brake cylinder assembly and the connecting part is shown.

[0023] Figure 2 A schematic diagram of the unit brake cylinder assembly device is shown when the foot switch is released.

[0024] Figure 3 A schematic diagram of the unit brake cylinder assembly device is shown when the foot switch is pressed.

[0025] Figure 4 It shows Figure 1 A schematic diagram of the structure of the connecting component.

[0026] Figure 5 It shows Figure 2 A schematic diagram of the structure of the connecting component.

[0027] Figure 6 It shows Figure 3 A schematic diagram of the structure of the connecting component.

[0028] Explanation of reference numerals in the attached figures: 10-Unit brake cylinder assembly device, 20-Connecting part, 100-Inflatable foot switch, 200-Connecting assembly, 210-Connecting air cylinder, 211-Cylinder body, 2111-First connecting port, 2112-Second connecting port, 2113-First chamber, 2114-Second chamber, 212-Piston rod, 212a-Gas passage, 2121-Rod body, 2122-Clamping part, 2122a-Clamping part, 2122b-Sealing part, 213-Piston, 220-Connecting part, 221-Connecting cavity, 2211-Abutting surface, 222-Connecting port, 300-T-connector, 400-Pressure regulating filter device, 500-Connecting foot switch. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0033] The DAB unit brake cylinder is a key component in the integrated braking system for railway freight cars. It consists of two parts: a brake adjuster and a brake cylinder body, which are connected by a left-hand thread. The brake adjuster has an internal thread at its connecting end, with a limit stop and a flat control rod inside. The brake cylinder body has an external thread at its connecting end, with a booster piston inside, which has a groove.

[0034] During the assembly of the DAB unit brake cylinder, the brake cylinder body must first be inflated with air to extend the booster cylinder piston to the set position. Then, the brake adjuster is aligned with the brake cylinder body, ensuring that the limit stop and flat control lever inside the brake adjuster are accurately aligned and engaged in the slot on the booster cylinder piston. The brake adjuster is then rotated to engage with the threads of the brake cylinder body. During the thread tightening process, air must be vented from the booster cylinder piston, causing it to slowly retract as the threads gradually engage, until assembly is complete.

[0035] However, in related technologies, the above assembly process typically requires two people to work together: one person controls the air supply and exhaust operations, while the other rotates the control valve to tighten the threads. This division of labor, relying on manual coordination, results in low assembly efficiency.

[0036] To address the aforementioned technical problems to some extent, this application provides a unit brake cylinder assembly device that can significantly improve assembly efficiency.

[0037] Please see Figure 1 This application provides a unit brake cylinder assembly device 10 for assembling unit brake cylinders. The unit brake cylinder includes a brake adjuster and a brake cylinder body. The brake adjuster has an internally threaded connection end and is equipped with a limit stop and a control rod inside. The brake cylinder body has an externally threaded connection end and is equipped with a booster piston 213 inside, which has a groove. The brake cylinder body also has a connection part 20 for serving as an air charging interface and an air exhaust interface. Specifically, the connection part 20 can be a connecting flange.

[0038] Please see Figure 1 and Figure 4In this embodiment, the unit brake cylinder assembly device 10 includes an inflatable foot switch 100 and a connecting assembly 200. The inflatable foot switch 100 has a first air inlet, a first air outlet, and a first air outlet, the first air inlet being used to communicate with an air source. The connecting assembly 200 has a gas passage 212a communicating with the first air outlet, and the connecting assembly 200 is used to connect with the connecting part 20 so that the gas passage 212a communicates with the brake cylinder body.

[0039] When the inflatable foot pedal switch 100 is pressed, the first air inlet and the first air outlet are connected, and the first exhaust outlet is blocked. Gas enters the brake cylinder body through the first air inlet, the first air outlet, and the gas passage 212a in sequence, causing the booster cylinder piston 213 to extend. When the inflatable foot pedal is released, the first air outlet and the first exhaust outlet are connected, and the first air inlet is blocked. Gas in the brake cylinder body is discharged through the gas passage 212a, the first air outlet, and the first exhaust outlet, causing the booster cylinder piston 213 to retract.

[0040] The initial state (released state) of the air-charging foot switch is closed, preventing air from charging the brake cylinder body. During the assembly of the unit brake cylinder, the operator only needs to step on the air-charging foot switch 100 to charge the brake cylinder body, causing the booster cylinder piston 213 to extend to the preset position. Then, the operator can manually align the limit stop and control lever in the brake adjuster and engage them in the slot on the booster cylinder piston 213. While rotating the brake adjuster and screwing it onto the brake cylinder body, the operator releases the air-charging foot switch 100, causing the brake cylinder body to begin venting air. The booster cylinder piston 213 then slowly retracts until the brake adjuster and brake cylinder body are fully tightened, completing the assembly of the unit brake cylinder.

[0041] The entire assembly process can be completed by one person. By using both hands and feet, the charging and venting operations and assembly actions can be coordinated and controlled without the need for additional personnel. This significantly improves assembly efficiency and convenience, reduces labor costs, and minimizes assembly errors caused by improper coordination among multiple operators.

[0042] It should be noted that in this embodiment, all components are connected via pipelines. The foot switch can be purchased directly from the market, and its specific structure and working principle are existing technologies, which will not be described in detail here.

[0043] Please see Figures 4-6In some embodiments, the connecting assembly 200 includes a connecting cylinder 210 and a connector 220. The connector 220 is connected to one side of the connecting cylinder 210 and has a connecting cavity 221 and a connecting port 222 communicating with the connecting cavity 221. The connecting port 222 is located on the side of the connector 220 away from the connecting cylinder 210 and is used for the connecting part 20 to extend into the connecting cavity 221. The connecting cylinder 210 includes a cylinder body 211 and a piston rod 212 disposed on the cylinder body 211. The side of the cylinder body 211 near the connector 220 has a first communicating port 2111. The piston rod 212 is telescopically disposed in the first communicating port 2111, and a gas passage 212a is disposed inside the piston rod 212. That is, the piston rod 212 can be a hollow tube structure, and the internal passage of the piston rod 212 is configured as a gas passage 212a.

[0044] When the piston rod 212 extends from the cylinder body 211 toward the side close to the connector 220, the piston rod 212 and the connector 220 can jointly clamp the connecting part 20 so that the gas passage 212a communicates with the brake cylinder body.

[0045] When connecting the brake cylinder body, the connecting part 20 is inserted into the connecting cavity 221 through the connecting port 222, and the piston rod 212 extends from the cylinder body 211 towards the side near the connecting member 220, so that the front end of the piston rod 212 extends into the connecting cavity 221. At this time, the piston rod 212 can press the connecting part 20 against the inner wall of the connecting cavity 221, and together with the connecting member 220, form a clamping effect, thereby realizing the communication between the gas passage 212a and the brake cylinder body.

[0046] Compared to related technologies that require bolts and nuts to connect the gas passage 212a to the flange of the connecting part 20, this embodiment directly clamps and fixes the connecting part 20 by cooperating with the piston rod 212 and the connecting piece 220, significantly simplifying the operation steps and improving the connection efficiency. After the unit brake cylinder is assembled, the connecting part 20 can be removed from the connecting port 222 simply by retracting the piston rod 212 into the cylinder body 211 and releasing the clamp on the connecting part 20. The disassembly process is equally convenient.

[0047] Please see Figures 4-6 In some embodiments, the connecting cavity 221 has an abutment surface 2211 on the side away from the cylinder body 211, and the piston rod 212 and the abutment surface 2211 together clamp the connecting part 20. This arrangement helps to increase the contact area between the connector 220 and the connecting part 20, thereby improving the clamping effect.

[0048] Please see Figures 4-6In some embodiments, the piston rod 212 includes a rod body 2121 and a clamping member 2122. A gas passage 212a is disposed on the rod body 2121, and a clamping portion 2122a is disposed at one end of the rod body 2121. The cross-sectional area of ​​the clamping member 2122 is larger than that of the rod body 2121. The clamping member 2122 and the connecting member 220 jointly clamp the connecting portion 20. Since the cross-sectional area of ​​the rod body 2121 is relatively small, by providing the clamping member 2122 at one end of the rod body 2121, and making the clamping member 2122 contact the connecting portion 20, the contact area between the piston rod 212 and the connecting portion 20 can be effectively increased, further improving the clamping effect.

[0049] Please see Figures 4-6 In some embodiments, the clamping member 2122 includes a clamping portion 2122a and a sealing portion 2122b. The sealing portion 2122b is disposed on the side of the clamping portion 2122a away from the rod body 2121. The sealing portion 2122b is used to contact the connecting portion 20, thereby achieving a seal between the gas passage 212a and the brake cylinder body and preventing gas leakage. Specifically, the sealing portion 2122b may be a sealing gasket.

[0050] Please see Figures 4-6 In some embodiments, the connecting air cylinder 210 further includes a piston 213, which is mounted on a piston rod 212. The piston 213 divides the interior of the cylinder body 211 into a first chamber 2113 and a second chamber 2114. The first chamber 2113 is a rear chamber away from the connector 220, and the second chamber 2114 is a front chamber close to the connector 220. The unit brake cylinder assembly device 10 also includes a connecting foot switch 500, which has a second air inlet, a second air outlet, a third air outlet, a second air outlet, and a third air outlet. The second air inlet is connected to an air source, the second air outlet is connected to the first chamber 2113, and the third air outlet is connected to the second chamber 2114. Please refer to Figure 2 When the foot switch 500 is released, the second air inlet and the second air outlet are connected. Gas enters the first chamber 2113 through the second air inlet and the second air outlet in sequence, pushing the piston 213 to move towards the side closer to the connector 220, so that the piston rod 212 extends towards the side closer to the connector 220. At the same time, the gas in the second chamber 2114 is discharged through the third air outlet and the third exhaust port.

[0051] Please see Figure 3When the foot switch 500 is pressed, the second air inlet and the third air outlet are connected. The gas enters the second chamber 2114 through the second air inlet and the third air outlet in sequence, pushing the piston 213 to move away from the connector 220, so that the piston rod 212 retracts away from the connector 220. At the same time, the gas in the first chamber 2113 is discharged through the second air outlet and the second exhaust port.

[0052] Please see Figure 2 When the foot switch 500 is initially connected, it is in a state of air supply to the first chamber 2113 (released state), and the piston rod 212 extends and contacts the inner wall of the connecting chamber 221. Please refer to... Figure 3 When it is necessary to connect to the brake cylinder body, the operator steps on the connecting foot switch 500, causing the piston rod 212 to retract to the side away from the connector 220. At this time, the connecting part 20 is inserted into the connecting cavity 221 through the connecting port 222. The connecting foot switch 500 is released, and the piston rod 212 extends to the side closer to the connector 220, thereby clamping the connecting part 20 and connecting the gas passage 212a to the brake cylinder body.

[0053] By controlling the extension and retraction of the piston rod 212 of the connecting air cylinder 210 through the connecting foot switch 500, the piston rod 212 cooperates with the connecting piece 220 to clamp or release the connecting part 20 of the brake cylinder body, realizing the rapid connection and disassembly of the brake cylinder body and the gas passage 212a. Operators only need to step on or release the connecting foot switch 500 to complete the clamping and releasing operations of the brake cylinder body, eliminating the need for bolts, nuts, or other fasteners, significantly simplifying the operation and improving the efficiency of connection and disassembly. Simultaneously, since both the inflation foot switch 100 and the connecting foot switch 500 are foot-controlled, operators can free their hands during operation, focusing on assembly actions such as aligning, rotating, and tightening the brake adjuster. This allows a single person to independently complete the entire assembly process of the unit brake cylinder, effectively reducing labor costs, avoiding operational errors that may occur with multiple people working together, and further improving assembly efficiency and quality.

[0054] Please see Figure 6 In some embodiments, the piston 213 is mounted in the middle of the piston rod 212, and the cylinder body 211 has a second communication port 2112 on the side away from the connector 220. The piston rod 212 is telescopically disposed in the second communication port 2112. In this way, the end of the piston rod 212 near the tail of the cylinder body 211 can extend to the outside of the cylinder body 211 through the second communication port 2112, which facilitates direct communication with the first air outlet of the air charging foot switch, simplifies the arrangement path of the gas passage 212a, and improves the reliability of the air circuit connection and the convenience of maintenance.

[0055] Please see Figure 1In some embodiments, the unit brake cylinder assembly device 10 further includes a three-way connector 300, which has a third air inlet, a fourth air outlet, and a fifth air outlet. The third air inlet is connected to an air source, the fourth air outlet is connected to the first air inlet, and the fifth air outlet is connected to the second air inlet. That is, a single three-way connector 300 can simultaneously distribute air to both the inflation foot switch 100 and the connecting foot switch 500. This arrangement eliminates the need for separate air source interfaces for the inflation foot switch 100 and the connecting foot switch 500, simplifying the overall air circuit structure and pipeline layout of the device and improving the overall integration and reliability of the device.

[0056] Please see Figure 1 In some embodiments, the unit brake cylinder assembly device 10 further includes a pressure regulating filter device 400, which is connected between the air source and the first air inlet of the inflation foot switch 100. The pressure regulating filter device 400 is a standard configuration in pneumatic systems, and its specific structure and working principle will not be described in detail here.

[0057] In the relevant technology, the air pressure is not limited. If the air pressure valve is operated incorrectly during the assembly process, it is very easy for the piston 213 of the booster cylinder to disengage from the flat control rod. The force of the piston 213 of the booster cylinder will directly act on the limiting cylinder that is in contact with the control rod, causing the limiting cylinder to crack and posing a significant quality and safety hazard.

[0058] Therefore, this application conducted finite element analysis calculations based on the material and dimensions of the limit stop of the brake adjuster inside the DAB unit brake cylinder. In order to effectively avoid damage and cracking of the limit stop due to excessive thrust, it was determined that the charging pressure of the DAB unit brake cylinder should not exceed 80 kPa.

[0059] In this embodiment, by setting a pressure regulating filter device 400 between the air source and the first air inlet of the inflation foot switch 100, the air source pressure can be adjusted to a safe range and output stably, and the compressed air can be filtered and purified to ensure the cleanliness of the gas charged into the brake cylinder body. This ensures the safety and reliability of the assembly process from both the perspectives of air pressure control and air source quality.

[0060] Based on the same inventive concept, this application also provides a method for assembling a unit brake cylinder. This method is implemented using the unit brake cylinder assembly device 10 described above. The beneficial effects of this assembly method are the same as those of the unit brake cylinder assembly device 10 described above, and will not be repeated here. The assembly method includes: S100: The air pressure is adjusted by the pressure regulating filter device 400.

[0061] Based on the material and dimensions of the limit stop of the brake adjuster inside the DAB unit brake cylinder, finite element analysis was performed. To effectively prevent damage or cracking of the limit stop due to excessive thrust, the charging pressure of the DAB unit brake cylinder was determined not to exceed 80 kPa. Therefore, the charging pressure can be adjusted to less than or equal to 80 kPa using the pressure regulating filter device 400.

[0062] S200: Connect the connecting assembly 200 to the connecting part 20 of the brake cylinder body so that the gas passage 212a is connected to the brake cylinder body.

[0063] Specifically, the steps of connecting the connecting assembly 200 to the connecting portion 20 of the brake cylinder body include: S210: Step on the foot switch 500 to retract the piston rod 212 to the side away from the connector 220.

[0064] S220: The connecting part 20 of the brake cylinder body is inserted into the connecting cavity 221 of the connector 220; wherein, the connecting assembly 200 includes a connecting cylinder 210 and a connector 220, the connecting cylinder 210 includes a cylinder body 211 and a piston rod 212 disposed on the cylinder body 211, and the gas passage 212a is disposed on the piston rod 212.

[0065] S230: Release the foot switch 500 so that the piston rod 212 extends toward the side closer to the connector 220 until the piston rod 212 and the connector 220 together clamp the connecting part 20, and the gas passage 212a is connected to the brake cylinder body.

[0066] S300: Step on the inflatable foot switch 100 to extend the booster cylinder piston 213.

[0067] When the air inflatable foot switch 100 is pressed, the first air inlet and the first air outlet are connected, the first exhaust outlet is blocked, and the gas enters the brake cylinder body in sequence through the first air inlet, the first air outlet and the gas passage 212a, thereby causing the booster cylinder piston 213 to extend.

[0068] S400: Assemble the limit stop and control lever into the slot of the booster cylinder piston 213, and rotate the brake adjuster and the brake cylinder body to make the brake adjuster and the brake cylinder body threadedly connected.

[0069] After the booster cylinder piston 213 extends to the set position, the limit stop and control lever can be assembled into the slot of the booster cylinder piston 213. The connecting end of the brake adjuster has an internal thread structure, and the connecting end of the brake cylinder body has an external thread structure. Rotating the brake adjuster and the brake cylinder body will make the brake adjuster and the brake cylinder body threadedly connected.

[0070] S500: After the booster cylinder piston 213 contacts the inner cover of the brake regulator, release the air-inflating foot switch 100 to retract the booster cylinder piston 213.

[0071] When the inflatable foot pedal is released, the first air outlet and the first exhaust port are connected, the first air inlet is blocked, and the gas in the brake cylinder body is discharged through the gas passage 212a, the first air outlet, and the first exhaust port, thereby causing the booster cylinder piston 213 to retract.

[0072] S600: Continue rotating the brake adjuster and the brake cylinder body until the brake adjuster and the brake cylinder body are fully tightened, and the unit brake cylinder assembly is complete.

[0073] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0074] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A unit brake cylinder assembly device for assembling unit brake cylinders, the unit brake cylinder comprising a brake cylinder body, the brake cylinder body having a booster piston and a connecting portion, characterized in that, include: An inflatable foot switch has a first air inlet, a first air outlet and a first air outlet, wherein the first air inlet is used to connect to an air source; A connecting assembly having a gas passage communicating with the first air outlet, the connecting assembly being used to connect with the connecting part so that the gas passage communicates with the brake cylinder body; When the inflatable foot pedal is pressed, gas enters the brake cylinder body through the first air inlet, the first air outlet, and the gas passage in sequence, causing the booster cylinder piston to extend; when the inflatable foot pedal is released, the gas in the brake cylinder body is discharged through the gas passage, the first air outlet, and the first exhaust port, causing the booster cylinder piston to retract.

2. The unit brake cylinder assembly device according to claim 1, characterized in that, The connecting assembly includes a connecting cylinder and a connector. The connector is connected to one side of the connecting cylinder and has a connecting cavity and a connecting port communicating with the connecting cavity. The connecting port is used for the connecting part to extend into the connecting cavity. The connecting cylinder includes a cylinder body and a piston rod disposed on the cylinder body. The cylinder body has a first communicating port on the side near the connector. The piston rod is telescopically disposed on the first communicating port, and the gas passage is disposed on the piston rod. When the piston rod extends from the cylinder body toward the side near the connector, the piston rod and the connector can jointly clamp the connecting part so that the gas passage communicates with the brake cylinder body.

3. The unit brake cylinder assembly device according to claim 2, characterized in that, The connecting cavity has an abutment surface on the side away from the cylinder body, and the piston rod and the abutment surface together clamp the connecting part.

4. The unit brake cylinder assembly device according to claim 2, characterized in that, The piston rod includes a rod body and a clamping member. The gas passage is disposed on the rod body, and the clamping part is disposed at one end of the rod body. The clamping member and the connecting member jointly clamp the connecting part.

5. The unit brake cylinder assembly device according to claim 4, characterized in that, The clamping member includes a clamping part and a sealing part. The sealing part is disposed on the side of the clamping part away from the rod body and is used to contact the connecting part.

6. The unit brake cylinder assembly device according to claim 2, characterized in that, The connecting air cylinder also includes a piston, which is assembled on the piston rod and divides the interior of the cylinder into a first chamber and a second chamber. The unit brake cylinder assembly device further includes a foot switch and has a second air inlet, a second air outlet, a third air outlet, a second air outlet, and a third air outlet. The second air inlet is used to communicate with an air source, the second air outlet is communicated with the first chamber, and the third air outlet is communicated with the second chamber. When the foot switch is released, gas enters the first chamber sequentially through the second air inlet and the second air outlet, causing the piston rod to extend towards the side closer to the connector. The gas in the second chamber is then discharged through the third air outlet and the third exhaust outlet. When the foot switch is pressed, gas enters the second chamber sequentially through the second inlet and the third outlet, causing the piston rod to retract away from the connector. The gas in the first chamber is then discharged through the second outlet and the second exhaust port.

7. The unit brake cylinder assembly device according to claim 6, characterized in that, The piston is assembled in the middle of the piston rod, and the cylinder body has a second communication port on the side away from the connector. The piston rod is telescopically disposed in the second communication port.

8. The unit brake cylinder assembly device according to claim 6, characterized in that, The unit brake cylinder assembly device also includes a three-way connector, which has a third air inlet, a fourth air outlet, and a fifth air outlet. The third air inlet is used to connect to an air source, the fourth air outlet is connected to the first air inlet, and the fifth air outlet is connected to the second air inlet.

9. The unit brake cylinder assembly device according to any one of claims 1-8, characterized in that, The unit brake cylinder assembly also includes a pressure regulating and filtering device, which is connected in series with other components. Between the air source and the first air inlet.

10. A method for assembling a unit brake cylinder, characterized in that, The unit brake cylinder assembly method is implemented according to the unit brake cylinder assembly device as described in any one of claims 1-9, wherein the unit brake cylinder further includes a brake adjuster, the brake adjuster having a limit stop and a control lever, and the assembly method includes: The connecting assembly is connected to the connecting portion of the brake cylinder body so that the gas passage is in communication with the brake cylinder body; Step on the inflatable foot switch to extend the piston of the booster cylinder; The limit stop and the control lever are assembled into the slot of the booster cylinder piston, and the brake adjuster and the brake cylinder body are rotated so that the brake adjuster and the brake cylinder body are threadedly connected. After the booster cylinder piston contacts the inner cover of the brake adjuster, release the inflation foot switch to retract the booster cylinder piston; Continue rotating the brake adjuster and the brake cylinder body until the brake adjuster and the brake cylinder body are fully tightened, and the unit brake cylinder is assembled.

11. The unit brake cylinder assembly method according to claim 10, characterized in that, The steps prior to connecting the connecting assembly to the connecting portion of the brake cylinder body include: The air pressure is adjusted by a pressure regulating filter device.

12. The unit brake cylinder assembly method according to claim 11, characterized in that, The step of adjusting the air pressure through the pressure regulating filter device includes: The air pressure is adjusted to less than or equal to 80 kPa using a pressure regulating filter device.

13. The unit brake cylinder assembly method according to claim 10, characterized in that, The step of connecting the connecting assembly to the connecting portion of the brake cylinder body includes: Step on the connecting foot switch to retract the piston rod away from the connector; The connecting portion of the brake cylinder body extends into the connecting cavity of the connector; wherein, the connecting assembly includes a connecting air cylinder and a connector, the connecting air cylinder includes a cylinder body and a piston rod disposed in the cylinder body, and the gas passage is disposed in the piston rod; Release the connecting foot switch to allow the piston rod to extend towards the side closer to the connector until the piston rod and the connector together clamp the connecting part, and the gas passage communicates with the brake cylinder body.

Images