Pedal cylinder airtightness detection tool

Abstract

The utility model relates to the technical field of air cylinder detection, in particular to a pedal air cylinder air tightness detection tool, which comprises a working table and further comprises stand columns symmetrically arranged in the length direction of the working table, first sliding grooves are formed in the opposite sides of the two sets of stand columns, and second sliding grooves are formed in the opposite sides of the two sets of stand columns. The transverse rod is arranged between the two sets of stand columns, a second sliding groove is formed in the transverse rod in the length direction of the transverse rod, and a sensor is connected into the second sliding groove; the clamping rod is arranged between the two sets of stand columns and located under the transverse rod. The clamping assembly is arranged on the clamping rod and is used for clamping and fixing the cylinder to be detected; the detection assembly is arranged in the workbench and used for detecting the air tightness of the air cylinder; the tool can accurately detect the air leakage of the pedal cylinder, carries out the durability test of the reciprocating motion of the pedal cylinder, can achieve the simultaneous detection of ten groups of pedal cylinders, and is rapid and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder detection, in particular to an air tightness detection tool for a pedal cylinder. Background Art

[0002] The foot pedal cylinder is an important component of the flip foot pedal in the Sierra door system. It controls the flipping operation of the foot pedal and determines whether the foot pedal can be lowered and retracted normally.

[0003] Currently, there is no comprehensive tooling for testing pedal cylinders. The commonly used test method is to perform a water immersion air tightness test. A certain amount of clean gas is filled into the equipment. When the pressure reaches the set value, it is immersed in water. The location and size of the leak are determined by observing the bubbles. This method is suitable for testing cylinders that can be immersed in water after internal inflation, and can determine the location of the leak more accurately.

[0004] However, the water immersion air tightness test bubble method cannot accurately measure the leakage amount, cannot realize the no-load reciprocating motion test of the cylinder, cannot quickly and conveniently detect the cylinder air tightness, and cannot take into account multiple groups of cylinders at the same time during the test, and the detection efficiency is low. For this reason, we propose a pedal cylinder air tightness detection tooling. Utility Model Content

[0005] The purpose of the utility model is to provide a pedal cylinder air tightness detection tool, which can accurately detect the amount of air leakage of the pedal cylinder, perform a durability test of the pedal cylinder with reciprocating motion times, and can realize the simultaneous detection of ten groups of pedal cylinders, quickly and conveniently, so as to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a pedal cylinder air tightness detection tool, including a workbench, and also including: columns, which are symmetrically arranged along the length direction of the workbench, and a first slide groove is opened on the opposite side of the two groups of columns; a cross bar, which is arranged between the two groups of columns, and a second slide groove is opened on the cross bar along its length direction, and a sensor is connected to the second slide groove; a clamping rod, which is arranged between the two groups of columns and directly below the cross bar; a clamping assembly, which is arranged on the clamping rod and is used to clamp and fix the cylinder to be tested; a detection assembly, which is arranged inside the workbench and is used to detect the air tightness of the cylinder; a display, which is arranged on one side of the workbench, and the sensor is electrically connected to the display.

[0007] Preferably, the clamping assembly includes: a baffle, which is provided on the clamping rod, and the baffles are provided in two groups, and a gap is provided between the two groups of baffles for clamping the cylinder to be tested; a fixed block, which is provided on one side of any group of baffles, and the fixed block is provided with a mounting bracket, and the mounting bracket is rotatably connected to a pressure plate at one end close to the gap, and the end of the mounting bracket opposite to the pressure plate is connected to a handle through a connecting block, and the handle is connected to the pressure plate through the connecting block; an adjusting member is provided on the pressure plate, and is used to press and fix one end of the cylinder to be tested.

[0008] Preferably, the adjusting member includes a through slot provided on the pressure plate, and a fixing column is provided in the through slot, one end of the fixing column passes through the through slot and is fixedly connected to a clamping block, a thread is provided on the fixing column, and the fixing column and the through slot are fixed by a nut.

[0009] Preferably, the clamping components are symmetrically provided in multiple groups along the clamping rod, and the multiple groups of clamping components are staggered, and the number of the clamping components matches the number of the sensors.

[0010] Preferably, the fixing block and the blocking piece are both detachably connected to the clamping rod via fasteners.

[0011] Preferably, the clamping rod and the vertical rod are detachably connected via a connecting head.

[0012] Preferably, the detection component includes: a first solenoid valve, the first solenoid valve is installed on the workbench, and the air outlet of the first solenoid valve is connected to the upper end of the cylinder to be tested; a third solenoid valve, the air outlet of the first solenoid valve is connected to the air outlet of the third solenoid valve; a digital pressure gauge, the air inlet of the third solenoid valve is connected to the digital pressure gauge, and the other end of the digital pressure gauge is connected to the fourth solenoid valve; the air outlet of the fourth solenoid valve is connected to the second solenoid valve, and the air outlet of the second solenoid valve is connected to the lower end of the cylinder to be tested, and one side of the first solenoid valve and the second solenoid valve are both connected to an external air inlet.

[0013] The utility model has at least the following beneficial effects:

[0014] When the utility model is in use, the position of the cylinder to be tested is determined by the baffle and the pressure plate. In order to increase the versatility of the clamp, a clamping block whose length can be adjusted in the through groove of the pressure plate is further provided on the pressure plate to clamp the cylinder to be tested again, thereby fixing the cylinder to be tested. In addition, there are multiple groups of pressure plates and clamping blocks, which can detect multiple groups of cylinders at the same time, thereby improving the efficiency of detection.

[0015] When the utility model is in use, the upper end of the cylinder body to be measured is connected with the first solenoid valve outlet, the first solenoid valve outlet is also connected with the third solenoid valve outlet, the third solenoid valve inlet is connected with one end of the digital pressure gauge, the other end of the digital pressure gauge is connected with the fourth solenoid valve inlet, the fourth solenoid valve outlet is connected with the second solenoid valve outlet, the second solenoid valve outlet is also connected with the lower end of the cylinder body, one side of the first solenoid valve and the second solenoid valve are both connected to the external air inlet, and the silencer valves of the first solenoid valve and the second solenoid valve are sealed. Through this air circuit connection method, it can be ensured that the gas will not leak due to the solenoid valve during the pressure maintaining process, thereby ensuring the measurement result. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0018] Figure 3 for Figure 2 A in the middle is an enlarged structural diagram;

[0019] Figure 4 Schematic diagram of the top view of the clamping rod;

[0020] Figure 5 This is a schematic diagram of the structure of the clamping rod from another angle;

[0021] Figure 6 for Figure 5 The enlarged structural diagram at B in the middle;

[0022] Figure 7 This is a schematic diagram of the gas circuit of the utility model.

[0023] In the figure: 100, workbench; 101, column; 102, first slide; 103, cross bar; 104, second slide; 105, sensor; 106, clamping rod; 107, display; 108, connector; 11, clamping assembly; 111, baffle; 112, fixing block; 113, mounting bracket; 114, pressure plate; 115, handle; 12, detection assembly; 121, first solenoid valve; 122, third solenoid valve; 123, digital pressure gauge; 124, fourth solenoid valve; 125, second solenoid valve; 126, air inlet; 20, adjusting part; 201, through slot; 202, fixing column; 203, clamping block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without making any creative work are all within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 7 , the utility model provides a technical solution:

[0026] A tool for testing the air tightness of a pedal cylinder includes a workbench 100, and also includes columns 101 symmetrically fixedly connected along the length direction of the workbench 100, and a first slide 102 is provided on the opposite side of the two groups of columns 101, a cross bar 103 is fixedly connected between the two groups of columns 101, and the cross bar 103 is provided with a second slide 104 along its length direction, and a sensor 105 is connected in the second slide 104, and the sensor 105 can count, and a clamping rod 106 is provided between the two groups of columns 101 and directly below the cross bar 103, and the clamping rod 106 is detachably connected to the column through a connector 108, and the connector 108 The clamping rod 106 can be moved and fixed along the height direction of the vertical pole, so as to facilitate adjustment for testing cylinders of different heights. The clamping rod 106 is provided with a clamping assembly 11 for clamping and fixing the cylinder to be tested. The clamping assembly 11 is symmetrically provided with multiple groups along the clamping rod 106, and the multiple groups of clamping assemblies 11 are staggered. The number of clamping assemblies 11 matches the number of sensors 105. The interior of the workbench 100 is provided with a detection assembly 12 for detecting the air tightness of the cylinder. A display 107 is provided on one side of the workbench 100. The sensor 105 is electrically connected to the display 107, and the number of cylinder tests can be counted.

[0027] The clamping assembly 11 includes a baffle 111 provided on the clamping rod 106, and the baffle 111 is provided with two groups, and a spacing is provided between the two groups of baffles 111 for clamping the cylinder to be tested. A fixing block 112 is provided on one side of any group of baffles 111. The fixing block 112 and the baffle 111 are detachably connected to the clamping rod 106 by fasteners. The fasteners are preferably threaded rods, which can enable the fixing block 112 and the baffle 111 to be flexibly installed on the clamping rod 106, and can meet the detection requirements of cylinders of different sizes. A mounting bracket 113 is provided on the fixing block 112. The mounting bracket 113 The end close to the spacing is rotatably connected to a pressure plate 114, and the end of the mounting frame 113 opposite to the pressure plate 114 is connected to a handle 115 through a connecting block, and the handle 115 is connected to the pressure plate 114 through the connecting block. A torsion spring is provided on the rotating shaft between the connecting block and the mounting frame 113, and the torsion spring is not marked. By rotating the handle 115, the pressure plate 114 can be driven to rotate in the direction away from the baffle 111, so as to facilitate the placement of the cylinder to be tested into the baffle 111. After placement, the handle 115 is released, and the handle 115 is reset under the action of the connecting block and the torsion spring, thereby completing the fixation of the cylinder to be tested.

[0028] The detection component 12 includes a first solenoid valve 121 installed on the workbench 100, the air outlet of the first solenoid valve 121 is connected to the upper end of the cylinder to be detected, the air outlet of the first solenoid valve 121 is connected to the air outlet of the third solenoid valve 122, the air inlet 126 of the third solenoid valve 122 is connected to a digital pressure gauge 123, the other end of the digital pressure gauge 123 is connected to a fourth solenoid valve 124, and the digital pressure gauge 123 is connected to the air inlet 126 of the fourth solenoid valve 124, the air outlet of the fourth solenoid valve 124 is connected to the second solenoid valve 125, and the air outlet of the second solenoid valve 125 is connected to the lower end of the cylinder to be detected, and one side of the first solenoid valve 121 and the second solenoid valve 125 are both connected to an external air inlet 126;

[0029] This gas circuit connection method can ensure that the gas will not leak due to the solenoid valve during the pressure maintenance process, thereby ensuring the accuracy of the measurement results.

[0030] Specific implementation process:

[0031] The handle 115 is turned to rotate the pressure plate 114 away from the two sets of baffles 111. After the cylinder body to be tested is placed between the two sets of baffles 111, the handle 115 is released, and the handle 115 is automatically reset under the drive of the torsion spring, so that the pressure plate 114 can act on the cylinder to achieve a fixed effect. In order to meet the requirements of testing multiple groups of cylinders at the same time, multiple sets of baffles 111 and fixing blocks 112 are provided on both sides of the clamping rod 106, thereby improving the testing efficiency of the cylinders. In addition, in order to meet the requirements of testing cylinders of different heights, the distance between the two sets of clamping rods 106 can be adjusted using the connector 108.

[0032] After the position of the cylinder is determined, it is connected to the solenoid valve through the air pipe. When the cylinder rises and maintains pressure, since the muffler of the second solenoid valve 125 is blocked, and the air inlet 126 and the air outlet of the third solenoid valve 122 and the fourth solenoid valve 124 are connected oppositely, the gas flow path is as follows: when the cylinder rises, the second solenoid valve 125 and the fourth solenoid valve 124 are energized, and the first solenoid valve 121 and the third solenoid valve 122 are not energized. The gas first flows through the outlet of the second solenoid valve 125, that is, the outlet of the fourth solenoid valve 124. The gas flows through the air outlet of the cylinder and then flows through the air inlet 126 of the fourth solenoid valve 124 through the digital pressure gauge 123. The gas is blocked at the air inlet 126 of the third solenoid valve 122 and inflated for seconds. After reaching a stable state, the second solenoid valve 125 is powered off. The gas is blocked in the muffler valve to form a pressure-maintaining circuit, thereby maintaining the cylinder pressure. At this time, the digital pressure gauge 123 shows a stable reading. At this time, the data is recorded to maintain the air tightness of the cylinder for 2 minutes. After the test, the fourth solenoid valve 124 is powered off for seconds to release the gas. The cylinder descends and maintains the pressure in the opposite direction.

[0033] The tooling test is stable and accurate. The baffle 111 and the fixing block 112 are slidably connected in the second slide groove 104 of the cross bar 103, which is conducive to adjusting the position of the cylinder. Then, when multiple groups of cylinders are tested, the distance between each other can be adjusted, which is conducive to testing multiple groups of cylinders at the same time. The two ends of the clamping rod 106 can move up and down through the connecting head 108, so that the tooling can fix cylinders of different lengths. The number of cylinder movements can be recorded by the sensor 105, and the number is displayed on the display 107, so as to achieve the purpose of the cylinder no-load reciprocating test.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements that are inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool for testing the air tightness of a pedal cylinder, comprising a workbench (100), characterized in that: Also includes: The columns (101) are symmetrically arranged along the length direction of the workbench (100), and the first sliding grooves (102) are opened on opposite sides of the two groups of columns (101); A crossbar (103) is provided between the two groups of uprights (101), the crossbar (103) is provided with a second chute (104) along its length, and a sensor (105) is connected to the second chute (104); A clamping rod (106) is provided between the two sets of columns (101) and is located directly below the crossbar (103); A clamping assembly (11), provided on the clamping rod (106), for clamping and fixing the cylinder to be tested; A detection component (12) is provided inside the workbench (100) and is used to detect the air tightness of the cylinder; The display (107) is provided on one side of the workbench (100), and the sensor (105) is electrically connected to the display (107).

2. The pedal cylinder air tightness detection tool according to claim 1, characterized in that: The clamping assembly (11) comprises: A baffle (111) is provided on the clamping rod (106), and two groups of baffles (111) are provided, and a distance is provided between the two groups of baffles (111) for clamping the cylinder to be tested; A fixed block (112) is provided on one side of any group of the baffles (111), and a mounting frame (113) is provided on the fixed block (112). An end of the mounting frame (113) close to the spacing is rotatably connected to a pressure plate (114). An end of the mounting frame (113) opposite to the pressure plate (114) is connected to a handle (115) via a connecting block, and the handle (115) is connected to the pressure plate (114) via the connecting block. The adjusting member (20) is provided on the pressing plate (114) and is used to press and fix one end of the cylinder to be tested.

3. The pedal cylinder air tightness detection tool according to claim 2, characterized in that: The adjusting member (20) includes a through slot (201) formed on the pressure plate (114), and a fixing column (202) is provided in the through slot (201). One end of the fixing column (202) passes through the through slot (201) and is fixedly connected to a clamping block (203). The fixing column (202) is provided with a thread, and the fixing column (202) and the through slot (201) are fixed by a nut.

4. The tool for testing the air tightness of the pedal cylinder according to claim 1, characterized in that: The clamping assemblies (11) are symmetrically arranged in multiple groups along the clamping rod (106), and the multiple groups of clamping assemblies (11) are staggered, and the number of the clamping assemblies (11) matches the number of the sensors (105).

5. The tool for testing the air tightness of the pedal cylinder according to claim 2, characterized in that: The fixing block (112) and the blocking piece (111) are both detachably connected to the clamping rod (106) via fasteners.

6. The tool for testing the air tightness of the pedal cylinder according to claim 4, characterized in that: The clamping rod (106) and the vertical rod are detachably connected via a connecting head (108).

7. The pedal cylinder air tightness detection tool according to claim 1, characterized in that: The detection component (12) comprises: A first solenoid valve (121), the first solenoid valve (121) is installed on the workbench (100), and the air outlet of the first solenoid valve (121) is connected to the upper end of the cylinder to be tested; a third solenoid valve (122), wherein the air outlet of the first solenoid valve (121) is in communication with the air outlet of the third solenoid valve (122); A digital pressure gauge (123), an air inlet (126) of the third solenoid valve (122) is connected to the digital pressure gauge (123), and the other end of the digital pressure gauge (123) is connected to the fourth solenoid valve (124); The air outlet of the fourth solenoid valve (124) is connected to the second solenoid valve (125), and the air outlet of the second solenoid valve (125) is connected to the lower end of the cylinder to be detected. One side of the first solenoid valve (121) and the second solenoid valve (125) are both connected to the external air inlet (126).

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