A main piston skew detection device for a 104 type dispensing valve

Abstract

The utility model provides a kind of main piston skew detection device for 104 type distribution valve, including bottom plate, still include the fixing mechanism for fixing main piston being arranged on bottom plate and for detecting piston rod skew in main piston, detection component;Detection component includes sleeve and the controller one being arranged in the outside of sleeve, sleeve is detachably sleeved in the outside of piston rod, the bottom side of sleeve is arrayed with several pressure sensors, several pressure sensors are all detachably contacted with the top side of diaphragm plate in main piston, and several pressure sensors are electrically connected with controller one respectively.The main piston skew detection device for 104 type distribution valve provided by the utility model perceives the pressure distribution on the surface of diaphragm plate by the pressure sensor arrayed on the bottom of sleeve, and transmits to controller one to carry out data analysis and comparison, and detection result is displayed in real time and intuitively by red-green indicator light, and detection efficiency and accuracy are higher.

Description

Technical Field

[0001] This utility model relates to the field of railway vehicle braking system testing technology, specifically to a device for detecting the main piston tilt of a 104-type distribution valve. Background Technology

[0002] The Type 104 distribution valve, as a core control component of the air brake system in my country's railway passenger and freight vehicles, directly affects the operational safety of trains due to its reliability. The main piston is a precision key component inside the Type 104 distribution valve; see appendix. Figure 6 As shown, the main piston mainly consists of a piston rod 41, a piston body 42, and a rubber diaphragm 43. During braking, pressure holding, and release, the main piston needs to move precisely and flexibly along the axial direction within the valve body to control the opening and closing of different air passages and achieve complex braking logic. During the processing, assembly, or use of the main piston, the piston rod is prone to bending or misalignment, which can lead to abnormal braking system function.

[0003] In existing technologies, the detection of main piston misalignment mostly relies on manual visual inspection or simple tools, which has problems such as low efficiency and large errors. There is a lack of a device specifically designed for rapid and accurate detection of main piston misalignment. Therefore, there is an urgent need for a detection device with high monitoring efficiency and good detection accuracy. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device for detecting the misalignment of the main piston in a type 104 distribution valve.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a main piston tilt detection device for a type 104 distribution valve, comprising a base plate, a fixing mechanism disposed on the base plate for fixing the main piston, and a detection component for detecting tilt of the piston rod in the main piston; the detection component comprises a sleeve and a controller disposed on the outside of the sleeve, the sleeve being detachably sleeved on the outside of the piston rod, a plurality of pressure sensors being arrayed on the bottom side of the sleeve, the plurality of pressure sensors being detachably in contact with the top side of the diaphragm plate in the main piston, the plurality of pressure sensors being electrically connected to the controller, and an indicator light for indicating whether the piston rod is tilted being disposed on the controller, the indicator light being electrically connected to the controller.

[0006] The base plate is provided with a support platform for supporting the piston body in the main piston. The fixing mechanism includes vertical supports arranged in an array on the base plate, an electric cylinder arranged on the vertical supports, and a clamping assembly for clamping the piston body is provided at the telescopic end of the electric cylinder.

[0007] A support sleeve for supporting the membrane plate is provided between several of the upright supports.

[0008] The clamping assembly includes a connecting block connected to the telescopic end of the electric cylinder and a clamping block oscillating on the connecting block. The clamping block is provided with a snap-fit ​​groove for clamping the piston body.

[0009] The top side of the support platform is provided with a photoelectric sensor for detecting the piston body, and the inside of the support platform is provided with a controller two. The photoelectric sensor and the electric cylinder are respectively electrically connected to the controller two.

[0010] Both controller one and controller two are equipped with a wireless communication module, and controller one and controller two are electrically connected through the wireless communication module.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) The pressure distribution on the surface of the diaphragm is sensed by the pressure sensor set in the array at the bottom of the sleeve and transmitted to the controller for data analysis and comparison. The detection results are displayed in real time and intuitively by red and green indicator lights. The detection efficiency is high and the detection accuracy is good.

[0013] (2) The piston body is clamped by the controller two and the photoelectric sensor and electric cylinder driven clamping assembly connected to the controller two, realizing the detection of workpiece in place and automatic clamping and fixing, improving the detection efficiency. The swing-set clamping block adapts to the shape of the piston body, making the clamping of the piston body more convenient and reliable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the bearing sleeve of this utility model;

[0016] Figure 3 This is a utility model Figure 2 A partially enlarged structural diagram of part A;

[0017] Figure 4 This is a schematic diagram of the structure of the detection component of this utility model;

[0018] Figure 5 This is a schematic diagram illustrating the usage process of this utility model;

[0019] Figure 6 This is a schematic diagram of the main piston structure of the 104-type distribution valve.

[0020] In the figure: 1. Base plate; 11. Support platform; 12. Photoelectric sensor; 2. Fixing mechanism; 21. Vertical support; 22. Electric cylinder; 23. Clamping assembly; 231. Connecting block; 232. Clamping block; 24. Bearing sleeve; 3. Detection assembly; 31. Sleeve; 32. Pressure sensor; 33. Indicator light; 4. Main piston; 41. Piston rod; 42. Piston body; 43. Diaphragm plate. Detailed Implementation

[0021] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0022] See Figures 1-6 A main piston tilt detection device for a type 104 distribution valve includes a base plate 1, a fixing mechanism 2 mounted on the base plate 1 for fixing the main piston 4, and a detection assembly 3 for detecting tilt of the piston rod 41 in the main piston 4. The detection assembly 3 includes a sleeve 31 and a controller 1 mounted on the outside of the sleeve 31. The sleeve 31 is detachably mounted on the outside of the piston rod 41. A plurality of pressure sensors 32 are arrayed on the bottom side of the sleeve 31. The plurality of pressure sensors 32 are detachably in contact with the top side of the diaphragm plate 43 in the main piston 4. The plurality of pressure sensors 32 are electrically connected to the controller 1. The controller 1 is equipped with an indicator light 33 for indicating whether the piston rod 41 is tilted. The indicator light 33 is electrically connected to the controller 1.

[0023] The base plate 1 is provided with a support platform 11 for supporting the piston body 42 in the main piston 4. The fixing mechanism 2 includes vertical supports 21 arranged in an array on the base plate 1, an electric cylinder 22 arranged on the vertical supports 21, and a clamping assembly 23 for clamping the piston body 42 is provided at the telescopic end of the electric cylinder 22.

[0024] A support sleeve 24 for supporting the membrane plate 43 is provided between several upright supports 21.

[0025] The clamping assembly 23 includes a connecting block 231 connected to the telescopic end of the electric cylinder 22 and a clamping block 232 oscillatingly disposed on the connecting block 231. The clamping block 232 is provided with a snap-fit ​​groove for clamping the piston body 42.

[0026] A photoelectric sensor 12 for detecting the piston body 42 is provided on the top side of the support platform 11. A controller 2 is provided inside the support platform 11. The photoelectric sensor 12 and the electric cylinder 22 are electrically connected to the controller 2.

[0027] Specifically, controller one is an embedded microprocessor used to process pressure sensor data and control indicator lights; controller two is a PLC or microcontroller used to control photoelectric sensor 32 and electric cylinder 22. Both controller one and controller two are equipped with wireless communication modules, and controller one and controller two are electrically connected through wireless communication modules, which are either Wi-Fi modules or Bluetooth modules.

[0028] The specific working process of this utility model:

[0029] In use, the operator places the main piston 4 to be tested on the support platform 11 of the device. At this time, the piston body 42 of the main piston 4 is supported by the support platform 11, while the rubber diaphragm plate 43 below it hangs down naturally and is supported by the bearing sleeve 24 between the uprights 21. The function of the bearing sleeve 24 is to prevent the flexible diaphragm plate 43 from being excessively deformed or damaged due to its own weight or subsequent operation.

[0030] Once the main piston 4 is in place, the photoelectric sensor 12 installed on the top side of the support platform 11 detects the presence of the piston body 42, generates a detection signal, and sends it to the controller 2 built into the support platform 11. The controller 2 receives and records the signal from the photoelectric sensor in real time.

[0031] Both controller one and controller two are equipped with wireless communication modules. Controller one and controller two are electrically connected through wireless communication modules. Controller one (responsible for detecting data) and controller two (responsible for controlling clamping) can exchange data through their respective built-in wireless communication modules (such as Wi-Fi or Bluetooth).

[0032] When the sleeve 31 of the handheld detection component 3 is removed from the base plate 1, the pressure sensor 32 of the detection component 3 senses that the pressure is zero and transmits the signal to the controller through the controller one. When the controller two detects the signal from the photoelectric sensor 12 and the signal from the controller one, it sends a signal to the electric cylinder 22 to clamp the piston body 42.

[0033] Specifically, the telescopic end of the electric cylinder 22 extends forward, pushing the clamping assembly 23 at its front end towards the piston body 42 of the main piston 4. The clamping block 232 in the clamping assembly 23 contacts and grips the piston body 42 simultaneously from the side and top through its snap-fit ​​groove. Since the clamping block 232 is oscillatingly mounted on the connecting block 231, it can adapt to the shape of the piston body 42, achieving uniform and stable clamping, thereby firmly fixing the main piston 4 on the support platform 11 and ensuring that it will not move during the testing process.

[0034] After the main piston is secured, the operator continues to hold the sleeve 31 of the detection assembly 3 and gently slips it over the outside of the piston rod 41 of the main piston 4 from top to bottom. The sleeve 31 falls naturally under its own weight until the multiple pressure sensors 32 at its bottom are in complete contact with the top surface of the diaphragm plate 43 in the main piston 4.

[0035] If the piston rod 41 is completely vertical and without any tilt, the sleeve 31 will press down on the diaphragm plate 43 with uniform pressure. At this time, the pressure values ​​received by all pressure sensors 32 are basically the same, and all pressure sensors 32 transmit signals to controller one. Controller one controls the indicator light 33 to light up green, indicating that the piston rod 41 is not tilted or bent. At this time, the sleeve 31 can be placed on the base plate 1.

[0036] If the piston rod 41 is misaligned, the sleeve 31 will tilt due to the misalignment of the piston rod 41 when it is pressed down, resulting in uneven pressure distribution on the diaphragm plate 43. At this time, the pressure sensor 32 on the tilted side will display a larger pressure value, while the pressure sensor 32 on the opposite side will display a smaller pressure value. All pressure sensors 32 transmit signals to controller 1. Controller 1 analyzes the data transmitted by all pressure sensors 32 and calculates their pressure difference. Controller 1 controls indicator light 33 to light up red. Alternatively, if all pressure sensors 32 do not detect pressure, indicator light 33 will also light up red. Both of these situations indicate that the piston rod 41 is misaligned or bent. In this case, the electric cylinder 22 still holds the piston body 42, and then removes the sleeve 31 from the piston rod 41.

[0037] Specifically, the controller has a preset pressure deviation threshold. It receives and processes data from each pressure sensor 32, calculating the pressure difference between them. If all pressure values ​​meet the set value and the difference is within the allowable threshold range, the controller determines that the piston rod 41 is not misaligned. At this time, it will illuminate the green indicator light 33 on the controller panel (or make the indicator light 33 green), sending a "qualified" signal to the operator. If the pressure values ​​of all pressure sensors 32 are zero, or if the difference between any one or more pressure values ​​exceeds the preset threshold, the controller determines that the piston rod 41 is misaligned. At this time, it will illuminate the red indicator light 33 (or make the indicator light 33 red), and may indicate the severity of the misalignment by the flashing frequency, issuing a "unqualified" alarm.

[0038] When the photoelectric sensor 12 detects that the piston body 42 is on the support platform 11 and all the pressure values ​​of the pressure sensors 32 reach the set value, the indicator light 33 turns green, and the electric cylinder 22 will not clamp the piston body 42. That is, when the sleeve 31 is placed on the base plate 1, when all the pressure values ​​of the pressure sensors 32 reach the set value, the indicator light 33 turns green, and the electric cylinder 22 releases the piston body 42, and then the main piston 4 can be easily removed. If the pressure values ​​of all the pressure sensors 32 are zero or the difference is large, the indicator light 33 turns red, and the electric cylinder 22 continues to clamp the piston body 42 until the entire detection process is over. After the sleeve 31 is placed on the base plate 1, the indicator light 33 turns green. At this time, the controller one sends a signal to the controller two, and the controller two sends a signal to the electric cylinder 22, after which the electric cylinder 22 releases the piston body 42.

[0039] More detailed testing procedures are as follows:

[0040] Step 1: Place the main piston 4 on the support platform 11. The photoelectric sensor 12 detects the signal and sends it to the controller 2.

[0041] Step 2: When the sleeve 31 is lifted, the pressure sensor 32 has zero pressure, and controller one sends a signal to controller two.

[0042] Step 3: After receiving and analyzing the signals from both the photoelectric sensor 12 and the controller, the controller 22 controls the electric cylinder 22 to clamp the piston body 42.

[0043] Step 4: The sleeve 31 is fitted onto the piston rod 41, the pressure sensor 32 continuously detects the pressure, and the controller analyzes the data and controls the indicator light 33.

[0044] Step 5: Depending on the indicator light status, the electric cylinder 22 releases or maintains the clamping position. If the red light is on, the electric cylinder 22 maintains the clamping position; if the green light is on, the electric cylinder 22 releases the main piston 4.

[0045] Step 6: Place the sleeve 31 on the bottom 1. The green light will illuminate. The electric cylinder 22 will release the piston body 42. Remove the main piston 4 to complete the test.

[0046] The pressure distribution on the surface of the diaphragm plate 43 is sensed by the pressure sensor 32 arranged in the bottom array of the sleeve 31, and transmitted to the controller for data analysis and comparison. The detection results are displayed in real time and intuitively through the red and green indicator lights 33. The detection efficiency is high and the detection accuracy is good.

[0047] The piston body 42 is clamped by the clamping assembly 23 driven by the controller 2 and the photoelectric sensor 12 and electric cylinder 22 connected to the controller 2, realizing the detection of the main piston's position and automatic clamping and fixing, which improves the detection efficiency. The swing-set clamping block 232 adapts to the shape of the piston body 42, making the clamping of the piston body 42 more convenient and reliable.

[0048] Technical features not described in detail in this solution are based on conventional operations and general understanding of those skilled in the art, and are therefore not elaborated upon here. Technical features not described in this utility model can be implemented using existing technology, and will not be repeated here. Of course, the above description is not intended to limit this utility model, nor is it limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this utility model should also fall within the protection scope of this utility model.

Claims

1. A device for detecting the misalignment of the main piston in a type 104 distribution valve, comprising a base plate (1), characterized in that, It also includes a fixing mechanism (2) set on the base plate (1) for fixing the main piston (4) and a detection component (3) for detecting the tilt of the piston rod (41) in the main piston (4); the detection component (3) includes a sleeve (31) and a controller set on the outside of the sleeve (31). The sleeve (31) is detachably sleeved on the outside of the piston rod (41). A plurality of pressure sensors (32) are arranged in an array on the bottom side of the sleeve (31). The plurality of pressure sensors (32) are detachably in contact with the top side of the diaphragm plate (43) in the main piston (4). The plurality of pressure sensors (32) are electrically connected to the controller. The controller is provided with an indicator light (33) for indicating whether the piston rod (41) is tilted. The indicator light (33) is electrically connected to the controller.

2. The main piston misalignment detection device for a type 104 distribution valve according to claim 1, characterized in that, The base plate (1) is provided with a support platform (11) for supporting the piston body (42) in the main piston (4). The fixing mechanism (2) includes an array of upright supports (21) arranged on the base plate (1) and an electric cylinder (22) arranged on the upright supports (21). The telescopic end of the electric cylinder (22) is provided with a clamping assembly (23) for clamping the piston body (42).

3. The main piston misalignment detection device for a type 104 distribution valve according to claim 2, characterized in that, A support sleeve (24) for supporting the membrane plate (43) is provided between several of the uprights (21).

4. The main piston misalignment detection device for a type 104 distribution valve according to claim 3, characterized in that, The clamping assembly (23) includes a connecting block (231) connected to the telescopic end of the electric cylinder (22) and a clamping block (232) oscillating on the connecting block (231). The clamping block (232) is provided with a snap-fit ​​groove for clamping the piston body (42).

5. The main piston misalignment detection device for a type 104 distribution valve according to claim 4, characterized in that, The top side of the support platform (11) is provided with a photoelectric sensor (12) for detecting the piston body (42). The support platform (11) is provided with a controller two. The photoelectric sensor (12) and the electric cylinder (22) are electrically connected to the controller two respectively.

6. The main piston misalignment detection device for a type 104 distribution valve according to claim 5, characterized in that, Both controller one and controller two are equipped with a wireless communication module, and controller one and controller two are electrically connected through the wireless communication module.

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