CN113125142B - Pneumatic test system of test equipment - Google Patents
Pneumatic test system of test equipment Download PDFInfo
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- CN113125142B CN113125142B CN202110551903.9A CN202110551903A CN113125142B CN 113125142 B CN113125142 B CN 113125142B CN 202110551903 A CN202110551903 A CN 202110551903A CN 113125142 B CN113125142 B CN 113125142B
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- 238000012360 testing method Methods 0.000 title claims abstract description 128
- 238000009434 installation Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 19
- 210000001503 joint Anatomy 0.000 claims description 9
- 230000003584 silencer Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 11
- 238000003860 storage Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000003908 quality control method Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Valve Housings (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a pneumatic test system for a test device, comprising at least one basic module unit. Each basic module unit comprises a valve seat, a first electromagnetic valve head and a second electromagnetic valve head, and a main channel is arranged in the valve seat. The valve seat is internally provided with a first layer of channels, a second layer of channels, a third layer of channels and a fourth layer of channels which are arranged at intervals, and the first layer of channels, the second layer of channels, the third layer of channels and the fourth layer of channels all comprise at least one branch channel. The first electromagnetic valve head is fixedly arranged on the first end face of the valve seat and can be used for communicating or disconnecting the first layer channel and the second layer channel, and the second electromagnetic valve head is fixedly arranged on the second end face of the valve seat and can be used for communicating or disconnecting the third layer channel and the fourth layer channel. The pneumatic test system of the test equipment has the advantages of strong universality and expandability, compact structure, small volume, convenience in assembly and maintenance and obvious improvement effect on the test consistency of batch application of the test equipment.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a pneumatic test system of test equipment.
Background
In the railway vehicle field, when a boarding product is newly manufactured or overhauled, the performance or the function of the product is subjected to qualification test through special test equipment, and the boarding product can be loaded after the qualification test. For related parts of the air brake system, the pneumatic test system is one of important components of test equipment, and can simulate the pneumatic operation environment required by the tested product, such as related parameters of air such as pressure control, flow control, direction control, pressure acquisition and the like, so that the performance or function of the product can be accurately evaluated.
The pneumatic test system of the existing test equipment basically has a pipeline structure, and is built by connecting pipeline elements such as an electromagnetic valve, a sensor, a steel pipe, a movable joint, a tee joint, an elbow, a butt wire and the like with each other or by hoses with high flexibility according to a pneumatic principle. The main disadvantages are as follows:
(1) The development work of the pneumatic test system is complex and difficult. For the test equipment of different tested products, because the pneumatic principle is different, the pneumatic test system needs to be developed according to the pneumatic principle of the tested products and the pipeline structure, so that the whole design difficulty, the complexity and the workload are large.
(2) The assembly and maintenance difficulties are great. In the pipeline structure, pipeline elements are required to be spliced and assembled to form a certain space physical structure, the assembly difficulty is high, the later maintenance is difficult, most of steel pipes are customized in production, and the production is also unfavorable.
(3) The reliability is poor. Because the pipeline connectors are more, the air leakage probability of the pneumatic test system is increased, and the use of equipment is affected; in the equipment transportation process, vibration causes the pneumatic test system of pipeline structure to loosen and produces and reveal the trouble, once revealing, seek the leak point and rectify and change the work degree of difficulty great.
(4) The pneumatic test system occupies a larger volume, the later maintenance space is larger, the space occupied by the pneumatic test system in the whole test equipment is increased, the whole test equipment is enlarged, and the land resources are increased.
(5) Because the size of the joint of the pipeline elements is not easy to control, certain errors exist in the length size after connection, and errors exist in coordinate points in space, so that the space physical structure of the pneumatic test system is also different to a certain extent, and when the tested product is subjected to performance test, the consistency of test data is poor due to the different air resistances of the pneumatic test system with different structures.
Accordingly, the present inventors have developed a pneumatic test system for test equipment to overcome the shortcomings of the prior art by years of experience and practice in the relevant industry.
Disclosure of Invention
The invention aims to provide a pneumatic test system of test equipment, which has the advantages of strong universality and expandability, compact structure, small volume, convenience in assembly and maintenance and obvious improvement effect on the test consistency of batch application of the test equipment.
The object of the invention is achieved in that a pneumatic test system of a test device comprises at least one base module unit; each basic module unit comprises a valve seat, a first electromagnetic valve head and a second electromagnetic valve head, and a main channel penetrating through the first end face and the second end face of the valve seat is formed in the valve seat; the valve seat is internally and sequentially provided with a first layer channel, a second layer channel, a third layer channel and a fourth layer channel which are arranged at intervals from a first end to a second end, wherein the first layer channel, the second layer channel, the third layer channel and the fourth layer channel comprise at least one branch channel, and each branch channel is communicated with the main channel and penetrates through the side surface of the valve seat; the first electromagnetic valve head is fixedly arranged on the first end face of the valve seat and can be used for communicating or disconnecting the first layer channel and the second layer channel, and the second electromagnetic valve head is fixedly arranged on the second end face of the valve seat and can be used for communicating or disconnecting the third layer channel and the fourth layer channel.
In a preferred embodiment of the invention, a constriction or plug is detachably connected in the main channel between the second layer channel and the third layer channel.
In a preferred embodiment of the invention, the outer end of the branch channel is detachably connected with a plug, a choke, a joint, a pressure sensor or a silencer.
In a preferred embodiment of the invention, a first valve port is arranged in the main channel and close to the first layer channel, and a valve rod of the first electromagnetic valve head can seal the first valve port; the valve rod of the valve head of the second electromagnetic valve can block the second valve port.
In a preferred embodiment of the present invention, a first stop collar and a second stop collar are formed in the valve seat at positions corresponding to the main channel, the first stop collar and the second stop collar being located in the first layer channel and the fourth layer channel, respectively; a first installation sleeve and a second installation sleeve are inserted in the main channel, and a first convex ring and a second convex ring are respectively arranged on the outer walls of the first installation sleeve and the second installation sleeve in a protruding mode; the first installation sleeve and the second installation sleeve are in interference fit with the hole wall of the main channel, the first convex ring is propped against the first limiting ring, the second convex ring is propped against the second limiting ring, the end part of the first installation sleeve, which is close to the first end of the valve seat, forms a first valve port, and the end part of the second installation sleeve, which is close to the second end of the valve seat, forms a second valve port.
In a preferred embodiment of the present invention, the outer wall of the end of the first mounting sleeve adjacent to the first end of the valve seat is spherical, and the outer wall of the end of the second mounting sleeve adjacent to the second end of the valve seat is spherical.
In a preferred embodiment of the present invention, the first layer channel, the second layer channel, the third layer channel and the fourth layer channel each include four branch channels communicating with each other.
In a preferred embodiment of the present invention, the valve seat is a cuboid structure, the four branch channels included in the first layer channel penetrate through four sides of the cuboid structure respectively, the four branch channels included in the second layer channel penetrate through four sides of the cuboid structure respectively, the four branch channels included in the third layer channel penetrate through four sides of the cuboid structure respectively, and the four branch channels included in the fourth layer channel penetrate through four sides of the cuboid structure respectively.
In a preferred embodiment of the invention, the pneumatic test system of the test device comprises at least two basic module units, wherein the two basic module units are detachably and fixedly connected, and the branch channels at the splicing positions in the two basic module units can be in sealed butt joint.
In a preferred embodiment of the present invention, one set of two opposite sides of the rectangular parallelepiped structure is denoted as a first side and a second side, respectively, and the other set of two opposite sides is denoted as a third side and a fourth side, respectively; annular grooves are formed in the first side face and the second side face, the annular grooves are arranged around branch channels of the second layer channel and the third layer channel, and the annular grooves and the valve seat between the third side face and the fourth side face form mounting plates; in the adjacent two cuboid structures, the branch channel on the third side of one cuboid structure can be in sealing butt joint with the branch channel on the fourth side of the other cuboid structure, and the adjacent two mounting plates of the adjacent two cuboid structures are connected through bolts.
In a preferred embodiment of the present invention, a positioning pin is further inserted between two adjacent mounting plates of two adjacent cuboid structures.
From the above, the pneumatic test system structure is modularized, and the pneumatic test system structure comprises at least one basic module unit, wherein the basic module unit is used for forming the functions of two-position two-way solenoid valves, the two-position two-way solenoid valves are the most basic units in all types of solenoid valves, and all types of solenoid valves can be obtained by combining one or more two-position two-way solenoid valves. Therefore, according to the pneumatic test principle of the tested product, the pneumatic test system can realize different test function requirements through the combination of one or at least two basic module units, thereby achieving the purposes of reducing the redesign difficulty of the pneumatic test system, simplifying and optimizing the layout of the air path and stabilizing the performance. In addition, because the pneumatic test system adopts the modularized design, the gas paths in each basic module unit are formed in the valve seat, and pipeline elements such as steel pipes, movable joints and elbows are not needed to be connected, so that the connection error is avoided, the physical structure of the pneumatic test system can be ensured to be completely consistent, the test data on different test equipment for the same tested product have good consistency, and a good batch quality control platform is provided for the tested product.
Drawings
The following drawings are only for purposes of illustration and explanation of the present invention and are not intended to limit the scope of the invention. Wherein:
Fig. 1: a perspective view of the valve seat provided by the invention.
Fig. 2: a side view of a first side of a valve seat is provided for the present invention.
Fig. 3: is a cross-sectional view taken along the A-A direction in fig. 2.
Fig. 4: a cross-sectional view of the base module unit is provided for the present invention.
Fig. 5: a cross-sectional view of the first mounting sleeve is provided for the present invention.
Fig. 6: a cross-sectional view of the second mounting sleeve is provided for the present invention.
Fig. 7: in a first application provided by the invention, a bottom perspective view is provided of two basic module units combined.
Fig. 8: a first application provided for the invention is a top view of two basic module units combined.
Fig. 9: a first application provided for the invention is a side view of two basic module units combined.
Fig. 10: is a cross-sectional view taken along the direction B-B in fig. 9.
Fig. 11: an enlarged view of the first base module unit in fig. 10.
Fig. 12: an enlarged view of the second base module unit in fig. 10.
Fig. 13: a second application provided for the invention is a top view of three basic modular units combined.
Fig. 14: a second application provided for the invention is a sectional view of three basic module units combined.
Fig. 15: an enlarged view of the first base module unit in fig. 14.
Fig. 16: an enlarged view of the second base module unit in fig. 14.
Fig. 17: an enlarged view of the third base module unit in fig. 14.
Reference numerals illustrate:
100. a base module unit; 101. a first base module unit; 102. a second base module unit; 103. a third base module unit;
1. A valve seat;
11. A main channel; 111. a first mounting sleeve; 1111. a first collar; 1112. a first valve port; 112. a second mounting sleeve; 1121. a second convex ring; 1122. a second valve port; 113. a seal ring; 114. a spherical surface; 115. plugging;
12. a first layer of channels; 13. a second layer of channels; 14. a third layer of channels; 15. a fourth layer of channels; 16. a branch channel; 161. a first branch channel; 162. a second branch channel; 163. a third branch channel; 164. a fourth branch channel;
171. A first stop collar; 172. a second limiting ring;
181. A first side; 182. a second side; 183. a third side; 184. a fourth side;
191. an annular groove; 192. a mounting plate; 1921. bolt holes; 1922. positioning holes; 193. a bolt; 194. a positioning pin;
21. a first solenoid valve head; 22. a second solenoid valve head; 23. a valve stem; 24. a hose;
4. a plug;
5. shrinking and plugging;
6. a joint;
7. a pressure sensor;
8. A muffler.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, a specific embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1 to 17, the present embodiment provides a pneumatic test system of a test apparatus, including at least one base module unit 100. Each base module unit 100 includes a valve seat 1, a first solenoid valve head 21, and a second solenoid valve head 22, and a main passage 11 penetrating a first end face and a second end face thereof is opened in the valve seat 1. The valve seat 1 is further provided with a first layer channel 12, a second layer channel 13, a third layer channel 14 and a fourth layer channel 15 which are arranged at intervals in sequence from the first end to the second end, wherein each of the first layer channel 12, the second layer channel 13, the third layer channel 14 and the fourth layer channel 15 comprises at least one branch channel 16, and each branch channel 16 is communicated with the main channel 11 and penetrates through the side face of the valve seat 1. The first electromagnetic valve head 21 is fixedly arranged on the first end face of the valve seat 1 and can be used for communicating or disconnecting the first-layer channel 12 and the second-layer channel 13, and the second electromagnetic valve head 22 is fixedly arranged on the second end face of the valve seat 1 and can be used for communicating or disconnecting the third-layer channel 14 and the fourth-layer channel 15.
Wherein the first end and the second end of the valve seat 1 are arranged opposite. The first electromagnetic valve head 21, the first layer channel 12 and the second layer channel 13 form a two-position two-way electromagnetic valve function, which is called a first electromagnetic valve; one of the first layer channel 12 and the second layer channel 13 is used as an input channel, the other layer channel is used as an output channel, and the connection or disconnection of the input channel and the output channel can be realized through the power on and power off of the first electromagnetic valve. The second electromagnetic valve head 22, the third layer channel 14 and the fourth layer channel 15 also form a two-position two-way electromagnetic valve, which is denoted as a second electromagnetic valve, and the connection or disconnection of the input channel and the output channel can be realized by the power supply and the power failure of the second electromagnetic valve. For the first solenoid valve head 21 and the second solenoid valve head 22, which are both heads of a common solenoid valve, a specific structure is a prior art.
A plug or tap 115 (shown in fig. 13 and 14) may be removably connected within the main channel 11 between the second layer channel 13 and the third layer channel 14 as generally desired to control the air flow there or to disconnect the second layer channel 13 from the third layer channel 14. In addition, the outer end of the branch channel 16 is detachably connected with a plug 4, a shrinkage plug 5, a joint 6, a pressure sensor 7 or a silencer 8 and other gas path elements according to requirements. The plug 4 is used for sealing the pneumatic test system in the direction, namely, the air passage is not circulated; the shrinkage plug 5 is used for flowing out compressed air in the direction of the air path at a certain flow rate, the joint 6 is used for connecting outside a module of a tubular structure such as a steel pipe, the pressure sensor 7 is used for collecting pressure in the direction of the pneumatic circulation, and the silencer 8 is used for silencing and noise reduction treatment during air exhaust of the compressed air on the air path.
When in use, according to the pneumatic testing principle of the tested product, the pneumatic testing system of the testing equipment can adopt an independent basic module unit 100, at this time, the basic module unit 100 is provided with two-position two-way electromagnetic valves, the two-position two-way electromagnetic valves can be mutually communicated, and the two electromagnetic valves can be disconnected by additionally arranging a plug 115. The pneumatic test system of the test equipment can also adopt to combine at least two basic module units 100 together for use, at this moment according to the pneumatic test principle, the branch channel 16 that needs to communicate among the adjacent basic module units 100 butt joint and communicate, the branch channel 16 department that needs to seal can set up the end cap 4 in order to guarantee that the air current does not pass here, the branch channel 16 that needs to be connected with external air supply or the product under test can set up joint 6 and connect, the branch channel 16 that needs to communicate with external atmosphere can set up muffler 8, the branch channel 16 that corresponds of the position that needs to detect pressure can connect pressure sensor 7, and then carry out relevant pneumatic test.
Thus, in this embodiment, the pneumatic test system is modularized, and includes at least one basic module unit 100, where the basic module unit 100 is configured to function as two-position two-way solenoid valves, which are the most basic units in all types of solenoid valves, and all types of solenoid valves can be obtained by combining one or more two-position two-way solenoid valves. Therefore, according to the pneumatic testing principle of the tested product, the pneumatic testing system in this embodiment can realize different testing function requirements by combining one or at least two basic module units 100, thereby achieving the purposes of reducing the redesign difficulty of the pneumatic testing system, simplifying and optimizing the layout of the air path and stabilizing the performance. In addition, as the pneumatic test system adopts a modularized design, the air paths in each basic module unit 100 are formed in the valve seat 1, and pipeline elements such as steel pipes, movable joints and elbows are not needed to be connected, so that the connection error is avoided, the physical structure of the pneumatic test system can be ensured to be completely consistent, the test data on different test equipment for the same tested product have good consistency, and a good batch quality control platform is provided for the tested product.
In a specific implementation, a first valve port 1112 is provided in the main channel 11 and near the first layer channel 12, and the valve stem 23 of the first solenoid valve head 21 can seal off the first valve port 1112 to disconnect the first layer channel 12 and the second layer channel 13. A second valve port 1122 is provided in the main passage 11 at a position close to the fourth-layer passage 15, and the valve stem 23 of the second solenoid valve head 22 can close off the second valve port 1122 to shut off the third-layer passage 14 and the fourth-layer passage 15.
During installation, the first electromagnetic valve head 21 and the second electromagnetic valve head 22 are respectively inserted into two ends of the main channel 11, the shells of the first electromagnetic valve head 21 and the second electromagnetic valve head 22 are generally connected and fixed with the valve seat 1 through bolts, and the action of the valve rod 23 inside the first electromagnetic valve head 21 and the second electromagnetic valve head can be controlled by controlling the power supply and the power failure of the first electromagnetic valve head and the second electromagnetic valve head, so that the corresponding two-position two-way electromagnetic valve can be opened or closed.
Taking the direction shown in fig. 4 as an example, when the first electromagnetic valve is powered on, the valve rod 23 in the valve head 21 of the first electromagnetic valve is lifted, the valve rod 23 is disconnected from the first valve port 1112, the air passage is opened, and the first-layer passage 12 is communicated with the second-layer passage 13; when the first electromagnetic valve is powered off, the valve rod 23 falls, the valve rod 23 and the first valve port 1112 are tightly pressed and sealed, the first valve port 1112 is plugged, so that the first-layer channel 12 and the second-layer channel 13 are disconnected, and the air path is cut off. The power-on and power-off process of the second electromagnetic valve is similar to the above process, and will not be described in detail herein.
In practical application, as shown in fig. 4 to 6, a first stop ring 171 and a second stop ring 172 are formed in the valve seat 1 at positions corresponding to the main passage 11, and the first stop ring 171 and the second stop ring 172 are located in the first layer passage 12 and the fourth layer passage 15, respectively. A first mounting sleeve 111 and a second mounting sleeve 112 are inserted into the main channel 11, and a first convex ring 1111 and a second convex ring 1121 are respectively protruded from the outer walls of the first mounting sleeve 111 and the second mounting sleeve 112. The first mounting sleeve 111 and the second mounting sleeve 112 are in interference fit with the hole wall of the main channel 11, the first convex ring 1111 abuts against the first limiting ring 171, the second convex ring 1121 abuts against the second limiting ring 172, the end of the first mounting sleeve 111 close to the first end of the valve seat 1 forms a first valve port 1112, and the end of the second mounting sleeve 112 close to the second end of the valve seat 1 forms a second valve port 1122.
Specifically, the first retainer 171 is formed on the valve seat 1 between the first layer passage 12 and the second layer passage 13, and the first mounting sleeve 111 is inserted into the main passage 11 between the first layer passage 12 and the second layer passage 13; the second retainer 172 is formed on the valve seat 1 between the fourth layer passage 15 and the third layer passage 14, and the second mounting sleeve 112 is inserted into the main passage 11 between the fourth layer passage 15 and the third layer passage 14. The first mounting sleeve 111 and the second mounting sleeve 112 are respectively fixed and sealed with the valve seat 1 in an interference fit manner, and a sealing ring 113 is generally clamped between the first mounting sleeve 111 and the valve seat 1 and between the second mounting sleeve 112 and the valve seat 1 so as to play a role in auxiliary sealing. Through the double combination of interference fit and auxiliary sealing, the connection between each mounting sleeve and the valve seat 1 is realized, so that the maintainability of the valve port is considered, and the easy processing property of the valve port is also considered.
In addition, since the end of the valve rod 23 in each solenoid valve head has a sealing rubber structure, as shown in fig. 5 and 6, the first valve port 1112 and the second valve port 1122 are preferably designed in a spherical structure, that is, the outer wall of the end of the first mounting sleeve 111 near the first end of the valve seat 1 is a spherical surface 114, and the outer wall of the end of the second mounting sleeve 112 near the second end of the valve seat 1 is a spherical surface 114, so that the sealing rubber on the valve rod 23 is more beneficial and not easy to damage, and not only the sealing effect but also the service life is ensured.
In one embodiment, the first layer channel 12, the second layer channel 13, the third layer channel 14 and the fourth layer channel 15 each include four branch channels 16 that communicate with each other. The structure can be simplified, and the gas path connection requirements of all the current test equipment can be met. Of course, each layer of channels may also include other numbers of branch channels 16, as desired, and this embodiment is merely illustrative.
It will be appreciated that when the first solenoid valve is de-energized, it will only block communication between the first layer passage 12 and the second layer passage 13, and when the second solenoid valve is de-energized, it will only block communication between the third layer passage 14 and the fourth layer passage 15, but the branch passages 16 in each layer passage are always in communication with each other and are not affected by de-energizing of the solenoid valves.
Preferably, for easy processing and installation and easy assembly and splicing between the plurality of base module units 100, as shown in fig. 1, the valve seat 1 has a rectangular parallelepiped structure, four branch channels 16 included in the first layer channel 12 penetrate four sides of the rectangular parallelepiped structure, four branch channels 16 included in the second layer channel 13 penetrate four sides of the rectangular parallelepiped structure, four branch channels 16 included in the third layer channel 14 penetrate four sides of the rectangular parallelepiped structure, and four branch channels 16 included in the fourth layer channel 15 penetrate four sides of the rectangular parallelepiped structure. Typically, the two branch channels 16 penetrating the first side 181 and the second side 182 of each layer of channels are coaxially arranged, and the two branch channels 16 penetrating the third side 183 and the fourth side 184 are coaxially arranged.
Further, in the case that the pneumatic test system of the test apparatus includes at least two base module units 100, the adjacent two base module units 100 are detachably and fixedly connected, and the branch channels 16 at the splicing positions in the adjacent two base module units 100 can be in sealing butt joint, so as to ensure the tightness of the air path.
More specifically, as shown in fig. 1 to 3, one set of two oppositely disposed sides of the rectangular parallelepiped structure is denoted as a first side 181 and a second side 182, respectively, and the other set of two oppositely disposed sides is denoted as a third side 183 and a fourth side 184, respectively. Annular grooves 191 are formed in the first side surface 181 and the second side surface 182, the annular grooves 191 are arranged around the branch passages 16 of the second layer passage 13 and the third layer passage 14, and the portions of the valve seat 1 between the annular grooves 191 and the third side surface 183 and the fourth side surface 184 form mounting plates 192. In two adjacent cuboid structures, the branch channel 16 on the third side 183 of one cuboid structure can be in sealing butt joint with the branch channel 16 on the fourth side 184 of the other cuboid structure (for example, end face sealing is realized by placing a sealing ring at the end of the corresponding branch channel 16 to prevent air leakage), and two adjacent mounting plates 192 of two adjacent cuboid structures are connected through a bolt 193.
A positioning pin 194 is inserted between two adjacent mounting plates 192 of two adjacent rectangular parallelepiped structures for convenient positioning. It will be appreciated that corresponding bolt holes 1921 and locating holes 1922 are provided in the mounting plate 192. During assembly, the two adjacent basic module units 100 are positioned by the positioning pins 194, the sealing rings are placed at the end parts of the corresponding branch channels 16, then the two adjacent mounting plates 192 are fastened by the bolts 193, and the plugs 4, the plugs 5, the connectors 6, the pressure sensors 7, the silencers 8 and other gas circuit elements are mounted on the corresponding branch channels 16 on the valve seat 1 according to the pneumatic test principle, so that the assembly can be completed. In this embodiment, the positioning pin 194 is used to position at least two basic unit modules, the sealing ring is used to seal the end face of the sealing ring, and the bolt 193 is fastened, and other sealing and fixing methods can be used as required, which is only illustrative. For the first electromagnetic valve and the second electromagnetic valve, an external pilot electromagnetic valve (prior art) can be adopted, so that air supply is required to be always provided outside, and as shown in fig. 8, pilot ports are formed on the first electromagnetic valve head 21 and the second electromagnetic valve head 22 and are connected with an air source air passage through a hose 24 so as to ensure the normal switching of the electromagnetic valves.
Further, in order to better understand the solution of the present embodiment, the following is an example of two applications of the pneumatic test system of the test apparatus after assembly using the base module unit 100, and the working procedure thereof is specifically as follows:
for convenience of explanation, four branch channels 16 in each layer of channels of each base module unit 100 are respectively referred to as a first branch channel 161, a second branch channel 162, a third branch channel 163, and a fourth branch channel 164, and the first branch channel 161, the second branch channel 162, the third branch channel 163, and the fourth branch channel 164 communicate with the above-described first side 181, second side 182, third side 183, and fourth side 184, respectively.
(One) first application: the pneumatic test system of the test equipment is assembled by two basic module units 100, and can realize the process of charging and discharging air to two air storage tanks with different volumes by the tested product.
As shown in fig. 7 to 12, two base module units 100 are respectively denoted as a first base module unit 101 and a second base module unit 102, and a third side 183 of the first base module unit 101 is attached to a fourth side 184 of the second base module unit 102 and fixed by bolts 193. The third branch channels 163 of the first layer channels 12, the second layer channels 13, the third layer channels 14, and the fourth layer channels 15 in the first base module unit 101 are disposed directly opposite to the fourth branch channels 164 of the first layer channels 12, the second layer channels 13, the third layer channels 14, and the fourth layer channels 15 in the second base module unit 102, respectively.
In the first base module unit 101: no other components are arranged in the third branch channels 163 of the first layer channel 12, the second layer channel 13, the third layer channel 14 and the fourth layer channel 15; the first branch channel 161 and the fourth branch channel 164 of the first layer channel 12 are both connected with the plug 4, and the second branch channel 162 of the first layer channel 12 is connected with the connector 6 and is connected with the air storage tank with the first volume through the connector 6; the first branch channel 161, the second branch channel 162 and the fourth branch channel 164 of the second layer channel 13 are all connected with the plug 4; the first branch channel 161, the second branch channel 162 and the fourth branch channel 164 of the third layer channel 14 are all connected with the plug 4; the first branch channel 161 of the fourth layer channel 15 is connected with the muffler 8, and the second branch channel 162 and the fourth branch channel 164 of the fourth layer channel 15 are both connected with the plug 4.
In the second base module unit 102: the first branch channel 161, the third branch channel 163 and the fourth branch channel 164 of the first layer channel 12 are connected with the plug 4, the second branch channel 162 of the first layer channel 12 is connected with the joint 6, and the second layer channel is connected with a second volume air storage tank through the joint 6; the first branch channel 161, the second branch channel 162 and the third branch channel 163 of the second layer channel 13 are all connected with the plug 4, and the fourth branch channel 164 of the second layer channel 13 is not provided with other components; the first branch channel 161 of the third layer channel 14 is connected with the pressure sensor 7, the second branch channel 162 of the third layer channel 14 is connected with the joint 6 and is connected with the output end of the tested product through the joint 6, the third branch channel 163 of the third layer channel 14 is connected with the plug 4, and the fourth branch channel 164 of the third layer channel 14 is not provided with other components; the first branch channel 161 of the fourth layer channel 15 is connected with the shrinkage plug 5, and the second branch channel 162, the third branch channel 163 and the fourth branch channel 164 of the fourth layer channel 15 are all connected with the plug 4.
During testing, air discharged from the output end of the tested product enters through the second branch channel 162 of the third layer channel 14 in the second basic module unit 102 and flows into the second layer channel 13 and the third layer channel 14 of the first basic module unit 101 and the second basic module unit 102; if the first electromagnetic valve in the first basic module unit 101 is opened at this time, air can flow into the air tank with the first volume, and air can be filled into the air tank with the first volume, and in the process, pressure change can be collected by using the pressure sensor 7, so that the test can be performed on how long the air tank with the first volume can be filled. If the first electromagnetic valve in the second basic module unit 102 is opened (at this time, the first electromagnetic valve in the first basic module unit 101 is closed), air can flow into the air tank with the second volume, and air can be filled into the air tank with the second volume, and in the process, pressure change can be collected by using the pressure sensor 7, so that the test can be performed on how long the air tank with the second volume can be filled.
When the air is exhausted from the air storage tank with the first volume, the first electromagnetic valve in the first basic module unit 101 is closed, the second electromagnetic valve in the first basic module unit 101 is opened (at the moment, the first electromagnetic valve and the second electromagnetic valve in the second basic module unit 102 are both closed), the air in the air storage tank with the first volume can be exhausted through the silencer 8 connected with the first basic module unit 101, and the pressure during the exhaust can be collected through the pressure sensor 7 so as to detect how long the exhaust can be completed. When the air is exhausted from the air storage tank with the second volume, the first electromagnetic valve in the second basic module unit 102 is closed, the second electromagnetic valve in the second basic module unit 102 is opened, and the air in the air storage tank with the second volume can be exhausted through the shrinkage plug 5 connected with the second basic module unit 102 at a certain flow rate, and the pressure sensor 7 can collect the pressure during the exhaust in the process.
(II) second application: the pneumatic test system of the test equipment is assembled by three basic module units 100, and can realize the functions of air charging, pressure maintaining and air exhausting in a pneumatic environment, such as the functions of air charging, pressure maintaining and air exhausting for common cylinders and spring cylinders in a brake clamp unit, a brake cylinder and a tread brake unit with different pressures, so as to facilitate relevant test item point tests.
As shown in fig. 13 to 17, three base module units 100 are respectively denoted as a first base module unit 101, a second base module unit 102, and a third base module unit 103, a third side 183 of the first base module unit 101 is attached and fixed to a fourth side 184 of the second base module unit 102, and a third side 183 of the second base module unit 102 is attached and fixed to a fourth side 184 of the third base module. The third branch channels 163 of the first layer channels 12, the second layer channels 13, the third layer channels 14, and the fourth layer channels 15 in the first base module unit 101 are disposed directly opposite to the fourth branch channels 164 of the first layer channels 12, the second layer channels 13, the third layer channels 14, and the fourth layer channels 15 in the second base module unit 102, respectively, and the third branch channels 163 of the first layer channels 12, the second layer channels 13, the third layer channels 14, and the fourth layer channels 15 in the second base module unit 102 are disposed directly opposite to the fourth branch channels 164 of the first layer channels 12, the second layer channels 13, the third layer channels 14, and the fourth layer channels 15 in the third base module unit 103, respectively.
In the first base module unit 101: the first branch channel 161, the second branch channel 162 and the fourth branch channel 164 of the first layer channel 12 are all connected with the plug 4, and the third branch channel 163 of the first layer channel 12 is connected with the shrinkage plug 5; the first branch channel 161, the second branch channel 162 and the third branch channel 163 of the second layer channel 13 are all connected with the plug 4, and the fourth branch channel 164 of the second layer channel 13 is connected with a wind source; the third layer channel 14 and the fourth layer channel 15 are respectively and mirror symmetrically arranged with the second layer channel 13 and the first layer channel 12, namely, a first branch channel 161, a second branch channel 162 and a third branch channel 163 of the third layer channel 14 are all connected with the plug 4, and a fourth branch channel 164 of the third layer channel 14 is connected with a wind source; the first branch channel 161, the second branch channel 162 and the fourth branch channel 164 of the fourth layer channel 15 are all connected with the plug 4, and the third branch channel 163 of the fourth layer channel 15 is connected with the shrinkage plug 5 (other components may not be provided).
In the second base module unit 102: the first branch channel 161 and the second branch channel 162 of the first layer channel 12 are connected with the plug 4, and no other components are arranged in the third branch channel 163 and the fourth branch channel 164 of the first layer channel 12; the first branch channel 161 of the second layer channel 13 is communicated with the outside atmosphere and is connected with the silencer 8, the second branch channel 162 and the third branch channel 163 of the second layer channel 13 are both connected with the plug 4, and no other parts are arranged in the fourth branch channel 164 of the second layer channel 13; the third layer channel 14 and the fourth layer channel 15 are respectively and mirror symmetrically arranged with the second layer channel 13 and the first layer channel 12, namely, a first branch channel 161 of the third layer channel 14 is communicated with the outside atmosphere and is connected with the muffler 8, a second branch channel 162 and a third branch channel 163 of the third layer channel 14 are both connected with the plug 4, and no other component is arranged in a fourth branch channel 164 of the third layer channel 14; the first branch channel 161 and the second branch channel 162 of the fourth layer channel 15 are both connected with the plug 4, and no other component is arranged in the third branch channel 163 and the fourth branch channel 164 of the fourth layer channel 15.
In the third base module unit 103: the first branch channel 161, the second branch channel 162 and the third branch channel 163 of the first layer channel 12 are all connected with the plug 4, and no other component is arranged in the fourth branch channel 164 of the first layer channel 12; the first branch channel 161 of the second layer channel 13 is connected with the pressure sensor 7, the second branch channel 162 of the second layer channel 13 is connected with the joint 6 and is connected with a common cylinder through the joint 6, the third branch channel 163 of the second layer channel 13 is connected with the plug 4, and no other component is arranged in the fourth branch channel 164 of the second layer channel 13; the first branch channel 161 of the third layer channel 14 is connected with the pressure sensor 7, the second branch channel 162 of the third layer channel 14 is connected with the joint 6 and is connected with the spring cylinder through the joint 6, the third branch channel 163 of the third layer channel 14 is connected with the plug 4, and no other component is arranged in the fourth branch channel 164 of the third layer channel 14; the first branch channel 161, the second branch channel 162 and the third branch channel 163 of the fourth layer channel 15 are all connected with the plug 4, and no other component is arranged in the fourth branch channel 164 of the fourth layer channel 15. In addition, a plug 115 is provided in the main passage 11 in the third base module unit 103 between the second-layer passage 13 and the third-layer passage 14.
During testing, after the primary pressure regulation of the total wind is performed through the corresponding pressure regulating valve and the secondary pressure regulation is performed through the corresponding pressure proportional valve, the output corresponding pressure air enters the first basic module unit 101 through the fourth branch channel 164 of the second layer channel 13 in the first basic module unit 101, and after the first electromagnetic valve of the first basic module unit 101 is opened, the air is filled into the first layer channel 12 of the second basic module unit 102 and the first layer channel 12 of the third basic module unit 103 from the shrinkage plug 5 in the first layer channel 12 of the first basic module unit 101; after the first electromagnetic valve of the third basic module unit 103 is opened, air enters the second layer channel 13 of the third basic module unit 103 and then enters the common cylinder, so that the common cylinder is inflated; then, the first electromagnetic valve in the first basic module unit 101 and the first electromagnetic valve in the third basic module unit 103 are closed, the first electromagnetic valve in the second basic module unit 102 is opened, and air in the corresponding channel in the system is discharged from the atmosphere through the second layer channel 13 of the second basic module unit 102, so that pressure maintaining of the common cylinder is realized; after that, the first solenoid valve of the third base module unit 103 is opened, and the air in the common cylinder can be exhausted from the second layer passage 13 of the second base module unit 102 to exhaust the air in the common cylinder. The pressure change can be detected by means of the corresponding pressure sensor 7 during the inflation and the exhaust of the common cylinder.
On the other hand, the output corresponding pressure air enters the first basic module unit 101 through the fourth branch passage 164 of the third layer passage 14 in the first basic module unit 101 (it is understood that the second layer passage 13 and the third layer passage 14 in the first basic module unit 101 are also mutually communicated at this time), and after the second solenoid valve of the first basic module unit 101 and the second solenoid valve of the third basic module unit 103 are opened, the air charging of the spring cylinder can be realized; then, the second solenoid valve in the first base module unit 101 and the second solenoid valve in the third base module unit 103 are closed, and the second solenoid valve in the second base module unit 102 is opened, so that pressure maintaining of the spring cylinder can be realized; after that, the second solenoid valve of the third base module unit 103 is opened, and the exhaust of the spring cylinders can be achieved, and the pressure change can be acquired by the corresponding pressure sensor 7. The specific process is similar to the air charging, pressure maintaining and air discharging processes of the common cylinder, and detailed description is omitted.
Of course, the above two application scenarios are only examples, and the development of the pneumatic test system of the specific test device during practical application can be realized by the corresponding gas circuit elements based on the basic module unit 100 combination according to the pneumatic test principle of the tested product and the above assembly method. That is, according to the specific pneumatic testing principle of the tested product, the basic module units 100 with different numbers are spliced and combined, then the corresponding gas path elements such as the plugs 4, the plugs 5, the connectors 6, the pressure sensors 7, the silencers 8 and the like are added to the corresponding branch channels 16, and the connection or disconnection of the corresponding gas paths is realized by controlling the opening and closing of the corresponding electromagnetic valves, so that different testing requirements can be met.
In summary, in the pneumatic test system of the test apparatus in this embodiment, the basic module unit 100 is implemented by combining the valve seat 1, two solenoid valve heads and two valve ports, and has the functions of the first solenoid valve and the second solenoid valve, and each solenoid valve can control on-off of two paths of air; for example, the first electromagnetic valve can control the on-off state of the first layer channel 12 and the second layer channel 13, the input and the output have four connecting ends, one corresponds to four branch channels 16 of the first layer channel 12, the other corresponds to four branch channels 16 of the second layer channel 13, and each branch channel 16 can be provided with a shrinkage plug 5, a plug 4, a joint 6, a pressure sensor 7, a silencer 8 and the like.
The valve seat 1 in the basic module unit 100 provides a channel for gas path connection, the valve seat 1 is of an up-down symmetrical structure, four layers of channels are shared, four branch channels 16 in each layer of channels are communicated, a threaded structure is reserved in each branch channel 16, and the requirements of pipe element connection can be met, for example, the branch channels 16 can be connected with elements such as a plug 4, a shrinkage plug 5, a joint 6, a pressure sensor 7 or a silencer 8 in a threaded sealing mode; threaded holes penetrate through the central surface of the valve seat 1 in the axial direction, namely, the main channel 11 between the second-layer channel 13 and the third-layer channel 14 is an internal threaded hole, and a shrinkage plug can be installed according to the requirement of a pneumatic principle to control air flow, or a plug 115 is installed at the shrinkage plug to realize disconnection between the second-layer channel 13 and the third-layer channel 14. The basic module unit 100 is designed for all existing pneumatic environment structures, provides a modularized and simple design scheme, and can meet the requirements of different pneumatic principles through the combination of different numbers of basic module units 100. The pneumatic test system of the whole test equipment has the following advantages:
(1) The system is modularized in structure, the basic module units 100 are developed, the whole system can be realized by combining different numbers of the basic module units 100, the redesign difficulty and the workload of the pneumatic test system are greatly reduced, and the engineering development of the pneumatic test system can be realized by only performing structural splicing based on the basic module units 100 according to the pneumatic principle of a tested product.
(2) The method can form standardized operation guidance, and establishes standardized flow from design, production, assembly, process and the like to form a mature process, thereby shortening the whole life cycle time of development of the pneumatic test system, improving the production efficiency and reducing the production difficulty, period and cost.
(3) The maintenance operation difficulty can be reduced, only the damaged valve head of the electromagnetic valve needs to be directly replaced, and the electromagnetic valve, the associated pipe fitting and the like need to be detached for replacement in the prior art, so that the workload is large.
(4) The modularized pneumatic test system has smaller space and compact and firm structure, thereby improving vibration resistance and reducing the failure rate of test equipment.
(5) The pneumatic test system has strong universality and expandability, and for all the current test equipment, the pneumatic test system can basically consist of one or at least two basic module units 100, so that a good universal application effect is achieved.
(6) The consistency of test data can be improved, and the consistency of the test data of different test devices to the same tested product can be well ensured because the physical structures of the test devices are completely consistent, so that the quality control of batch products is improved.
The foregoing is illustrative of the present invention and is not to be construed as limiting the scope of the invention. Any equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this invention, and are intended to be within the scope of this invention.
Claims (9)
1. A pneumatic test system for a test apparatus, comprising at least one base module unit; each basic module unit comprises a valve seat, a first electromagnetic valve head and a second electromagnetic valve head, and a main channel penetrating through a first end face and a second end face of the valve seat is formed in the valve seat;
A first layer channel, a second layer channel, a third layer channel and a fourth layer channel which are arranged at intervals are sequentially arranged in the valve seat from the first end to the second end of the valve seat, the first layer channel, the second layer channel, the third layer channel and the fourth layer channel all comprise at least one branch channel, and each branch channel is communicated with the main channel and penetrates through the side face of the valve seat; the first electromagnetic valve head is fixedly arranged on the first end face of the valve seat and can be used for communicating or disconnecting the first layer channel and the second layer channel, and the second electromagnetic valve head is fixedly arranged on the second end face of the valve seat and can be used for communicating or disconnecting the third layer channel and the fourth layer channel;
A shrinkage plug or a screw plug is detachably connected in the main channel and positioned between the second layer channel and the third layer channel; the first layer channel, the second layer channel, the third layer channel and the fourth layer channel all comprise four branch channels which are mutually communicated.
2. A pneumatic test system for a test apparatus as claimed in claim 1,
The outer side end of the branch channel can be detachably connected with a plug, a shrinkage plug, a joint, a pressure sensor or a silencer.
3. A pneumatic test system for a test apparatus as claimed in claim 1,
A first valve port is arranged in the main channel and close to the first layer channel, and a valve rod of the valve head of the first electromagnetic valve can seal the first valve port; a second valve port is arranged in the main channel and close to the fourth layer channel, and a valve rod of the second electromagnetic valve head can seal the second valve port.
4. A pneumatic test system for a test apparatus as claimed in claim 3,
A first limiting ring and a second limiting ring are formed in the valve seat at positions corresponding to the main channel, and the first limiting ring and the second limiting ring are respectively positioned in the first layer channel and the fourth layer channel; a first installation sleeve and a second installation sleeve are inserted in the main channel, and a first convex ring and a second convex ring are respectively arranged on the outer walls of the first installation sleeve and the second installation sleeve in a protruding mode;
The first installation sleeve and the second installation sleeve are in interference fit with the hole wall of the main channel, the first convex ring is propped against the first limiting ring, the second convex ring is propped against the second limiting ring, the end part of the first installation sleeve, which is close to the first end of the valve seat, forms the first valve port, and the end part of the second installation sleeve, which is close to the second end of the valve seat, forms the second valve port.
5. A pneumatic test system for a test apparatus as claimed in claim 4,
The outer wall of the end part of the first installation sleeve, which is close to the first end of the valve seat, is a spherical surface, and the outer wall of the end part of the second installation sleeve, which is close to the second end of the valve seat, is a spherical surface.
6. A pneumatic test system for a test apparatus as claimed in claim 1,
The valve seat is of a cuboid structure, four branch channels contained in the first layer of channels penetrate through four side faces of the cuboid structure respectively, four branch channels contained in the second layer of channels penetrate through four side faces of the cuboid structure respectively, four branch channels contained in the third layer of channels penetrate through four side faces of the cuboid structure respectively, and four branch channels contained in the fourth layer of channels penetrate through four side faces of the cuboid structure respectively.
7. A pneumatic test system for a test apparatus as claimed in claim 6,
The pneumatic test system of the test equipment comprises at least two basic module units, wherein two adjacent basic module units are detachably and fixedly connected, and branch channels at splicing positions in the two adjacent basic module units can be in sealing butt joint.
8. A pneumatic test system for a test apparatus as claimed in claim 7,
One group of two oppositely arranged side surfaces in the cuboid structure are respectively marked as a first side surface and a second side surface, and the other group of two oppositely arranged side surfaces are respectively marked as a third side surface and a fourth side surface;
Annular grooves are formed in the first side face and the second side face, the annular grooves are arranged around the branch channels of the second layer channel and the third layer channel, and the annular grooves and the valve seat parts between the third side face and the fourth side face form mounting plates; in the adjacent two cuboid structures, the branch channel on the third side surface of one cuboid structure can be in sealing butt joint with the branch channel on the fourth side surface of the other cuboid structure, and the adjacent two mounting plates of the adjacent two cuboid structures are connected through bolts.
9. A pneumatic test system for a test apparatus as claimed in claim 8,
And a positioning pin is inserted between two adjacent mounting plates of the adjacent cuboid structures.
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