CN214584011U - Pneumatic test system of test equipment - Google Patents

Abstract

The utility model relates to a pneumatic test system of test equipment, including 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 channel, a second layer of channel, a third layer of channel and a fourth layer of channel which are arranged at intervals, and the first layer of channel, the second layer of channel, the third layer of channel and the fourth layer of channel 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 communicated with or disconnected from 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 communicated with or disconnected from the third layer channel and the fourth layer channel. The utility model discloses a pneumatic test system of test equipment, commonality and scalability are strong, compact structure, small, and the equipment of being convenient for is maintained, has obvious improvement effect to the test uniformity that test equipment used in batches.

Description

Pneumatic test system of test equipment

Technical Field

The utility model relates to a rail transit technical field especially relates to a pneumatic test system of test equipment.

Background

In the field of railway vehicles, when a boarding product is newly manufactured or overhauled, the performance or the function of the product needs to be inspected for eligibility through special test equipment, and the boarding can be carried out after the qualification. For related parts of the air brake system, the pneumatic test system is one of important components of the test equipment, and the pneumatic test system can simulate the pneumatic operation environment required by a tested product, such as related parameters of air pressure control, flow control, direction control, pressure acquisition and the like, so that the product performance or function is accurately evaluated.

The pneumatic test system of the existing test equipment is basically of a pipeline structure, and the pneumatic test system is built by means of pipeline elements such as an electromagnetic valve, a sensor, a steel pipe, a movable joint, a tee joint, an elbow and a butt wire or by means of hoses with high flexibility and 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 testing equipment of different tested products, due to different pneumatic principles, a pneumatic testing system needs to be developed according to the pneumatic principle of the tested products and a pipeline structure, so that the whole design difficulty, complexity and workload are large.

(2) Assembly and maintenance difficulties are great. In the pipeline structure, pipeline components need to be spliced and assembled to form a certain space physical structure, the assembly difficulty is high, the later-stage maintenance is not easy, most of steel pipes are customized in production, and the production is not facilitated.

(3) The reliability is poor. The air leakage probability of a pneumatic test system is increased due to more pipeline connecting pieces, so that the use of equipment is influenced; in the equipment transportation process, the vibration causes the looseness of a pneumatic test system of a pipeline structure to generate leakage faults, and once leakage occurs, the difficulty of searching leakage points and rectifying and reforming work is high.

(4) The pneumatic test system occupies a large volume, the required maintenance space in the later period is also large, and the space occupied by the pneumatic test system in the whole test equipment is increased, so that the whole volume of the test equipment is increased, and the land resource is increased.

(5) Because pipeline component junction size is difficult to control, there is certain error in length size after connecting, and also there is the error at the coordinate point in space, leads to pneumatic test system space physical structure also to have certain difference, when carrying out the performance test to the product under test, because the difference of the pneumatic test system air resistance of different structures, leads to the test data uniformity relatively poor.

Therefore, the inventor provides a pneumatic test system of the test equipment by virtue of experience and practice of related industries for many years so as to overcome the defects of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic test system of test equipment, commonality and scalability are strong, compact structure, small, and the equipment of being convenient for is maintained, has obvious improvement effect to the test uniformity that test equipment used in batches.

The utility model aims at realizing the pneumatic testing system of the testing equipment, which comprises 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 penetrating through a first end face and a second end face of the valve seat is formed in the valve seat; the first layer of channel, the second layer of channel, the third layer of channel and the fourth layer of channel which are arranged at intervals are also sequentially arranged in the valve seat from the first end to the second end of the valve seat, the first layer of channel, the second layer of channel, the third layer of channel and the fourth layer of channel all 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 communicated with or disconnected from 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 communicated with or disconnected from the third layer channel and the fourth layer channel.

In a preferred embodiment of the present invention, a plug or a plug is detachably connected to the main channel and between the second layer channel and the third layer channel.

In a preferred embodiment of the present invention, the outer end of the branch channel is detachably connected to a plug, a joint, a pressure sensor or a silencer.

In a preferred embodiment of the present invention, a first valve port is disposed in the main channel and near the first layer channel, and a valve rod of the first electromagnetic valve head can block the first valve port; and a second valve port is arranged in the main channel and close to the fourth layer of channel, and a valve rod of the second electromagnetic valve head can block the second valve port.

In a preferred embodiment of the present invention, a first limit ring and a second limit ring are formed in the valve seat at positions corresponding to the main channel, and the first limit ring and the second limit ring are respectively located in the first layer channel and the fourth layer channel; a first mounting sleeve and a second mounting sleeve are inserted in the main channel, and the outer walls of the first mounting sleeve and the second mounting sleeve are respectively provided with a first convex ring and a second convex ring in a protruding manner; the first mounting sleeve and the second mounting sleeve are in interference fit with the hole wall of the main channel, the first convex ring abuts against the first limiting ring, the second convex ring abuts against the second limiting ring, the end portion, close to the first end of the valve seat, of the first mounting sleeve forms a first valve port, and the end portion, close to the second end of the valve seat, of the second mounting sleeve forms a second valve port.

The present invention provides a preferable embodiment, the end portion outer wall of the first end of the first mounting sleeve close to the valve seat is a spherical surface, and the end portion outer wall of the second end of the second mounting sleeve close to the valve seat is a spherical surface.

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 all include four branch channels that are mutually connected.

The utility model discloses an among the preferred embodiment, the disk seat is the cuboid structure, and four branch passageways that first layer passageway contained pierce through four sides of cuboid structure respectively, and four branch passageways that second layer passageway contained pierce through four sides of cuboid structure respectively, and four branch passageways that third layer passageway contained pierce through four sides of cuboid structure respectively, and four branch passageways that fourth layer passageway contained pierce through four sides of cuboid structure respectively.

The utility model discloses a in a preferred embodiment, the pneumatic test system of test equipment includes two at least basic module unit, can dismantle ground fixed connection between two adjacent basic module unit, and the branch passageway of concatenation position can seal the butt joint in two adjacent basic module unit.

In a preferred embodiment of the present invention, two oppositely disposed side surfaces of one of the groups of rectangular parallelepiped structures are respectively referred to as a first side surface and a second side surface, and two oppositely disposed side surfaces of the other group of rectangular parallelepiped structures are respectively referred to as a third side surface and a fourth side surface; the first side surface and the second side surface are both provided with annular grooves, the annular grooves are arranged around the branch channels of the second layer of channel and the third layer of channel, and the annular grooves and the parts of the valve seats between the third side surface and the fourth side surface form mounting plates; in two adjacent cuboid structures, the branch passageway on the third side of one of them cuboid structure can seal the butt joint with the branch passageway on the fourth side of another cuboid structure, passes through bolted connection between two adjacent mounting panels of two adjacent cuboid structures.

The utility model discloses an in a preferred embodiment, still insert between two adjacent mounting panels of two adjacent cuboid structures and be equipped with the locating pin.

By the above, the utility model discloses in with pneumatic test system structure modularization, it includes at least one basic module unit, constitutes the function of two solenoid valves in this basic module unit, and two solenoid valves are the most basic unit among all types of solenoid valves, and all types of solenoid valves can all be obtained by one or more two solenoid valve combinations. Therefore, the utility model provides a pneumatic test system can realize different test function demands through one or two at least basic module unit combinations according to the pneumatic test principle of the product of being surveyed to reach the redesign degree of difficulty that reduces pneumatic test system, simplify the purpose of optimizing gas circuit overall arrangement and stable performance, and commonality, scalability are strong, and the structure is compacter, and the vibration resistance is stronger, and shared space is littleer, the equipment of being more convenient for is maintained. In addition, because the pneumatic test system adopts the modularized design, the air passages in each basic module unit are formed in the valve seat, the connection of pipeline elements such as steel pipes, movable joints, elbows and the like is not needed, the connection error is avoided, the physical structures of the pneumatic test system can be ensured to be completely consistent, the test data of the same tested product on different test equipment has good consistency, and a good batch quality control platform is provided for the tested product.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

FIG. 1: is the perspective view of the valve seat provided by the utility model.

FIG. 2: to the utility model provides a side view of the first side of disk seat.

FIG. 3: is a cross-sectional view taken along a-a in fig. 2.

FIG. 4: is the utility model provides a cross-sectional view of basic module unit.

FIG. 5: do the utility model provides a cross-sectional view of first installation cover.

FIG. 6: do the utility model provides a cross-sectional view of second installation cover.

FIG. 7: the utility model provides a bottom perspective view of the first application after two basic module units are combined.

FIG. 8: to the utility model provides a plan view after two basic module units are combined in the first application.

FIG. 9: to the side view of the first application provided by the present invention after combining two basic module units.

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 of fig. 10.

FIG. 12: an enlarged view of the second base module unit of fig. 10.

FIG. 13: to the top view of the second application after combining three basic module units.

FIG. 14: to the utility model provides a second application with the section view after three basic module unit combination.

FIG. 15: an enlarged view of the first base module unit of fig. 14.

FIG. 16: an enlarged view of the second base module unit of fig. 14.

FIG. 17: an enlarged view of the third base module unit of fig. 14.

The reference numbers illustrate:

100. a base module unit; 101. a first base module unit; 102. a second base module unit; 103. A third basic module unit;

1. a valve seat;

11. a main channel; 111. a first mounting sleeve; 1111. a first convex ring; 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. spherical surface; 115. plugging by screwing;

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 limit ring; 172. a second stop collar;

181. a first side surface; 182. a second side surface; 183. a third side; 184. a fourth side;

191. an annular groove; 192. mounting a plate; 1921. bolt holes; 1922. positioning holes; 193. a bolt; 194. Positioning pins;

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 silencer.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments 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 basic module unit 100 comprises a valve seat 1, a first solenoid valve head 21 and a second solenoid valve head 22, in which valve seat 1 a main channel 11 is provided running through its first and second end faces. The valve seat 1 is also sequentially provided with a first layer of channels 12, a second layer of channels 13, a third layer of channels 14 and a fourth layer of channels 15 which are arranged at intervals from the first end to the second end, the first layer of channels 12, the second layer of channels 13, the third layer of channels 14 and the fourth layer of channels 15 all comprise 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 surface of the valve seat 1 and can be communicated with or disconnected from 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 surface of the valve seat 1 and can be communicated with or disconnected from the third layer channel 14 and the fourth layer channel 15.

Wherein the first and second ends of the valve seat 1 are oppositely arranged. The first electromagnetic valve head 21, the first layer channel 12 and the second layer channel 13 form the function of a two-position two-way electromagnetic valve, and the function is marked as 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 input channel and the output channel can be connected or disconnected 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 function of a two-position two-way electromagnetic valve, which is marked as a second electromagnetic valve, and the connection or disconnection of the input channel and the output channel can be realized through the power on and the power off of the second electromagnetic valve. The first electromagnetic valve head 21 and the second electromagnetic valve head 22 are both valve heads of common electromagnetic valves, and the specific structure is the prior art.

A choke or plug 115 (shown in fig. 13 and 14) may be removably connected within the main channel 11 between the second level channel 13 and the third level channel 14 to control the flow of air there or to disconnect the second level channel 13 from the third level channel 14, as generally desired. Further, as necessary, an outer end of the branch passage 16 is detachably connected to an air passage element such as a plug 4, a plug 5, a joint 6, a pressure sensor 7, or a muffler 8. The plug 4 is used for sealing the pneumatic test system in the direction, namely, the gas path is not communicated; the plug 5 is used for the compressed air of this gas circuit direction to flow out with certain flow, connects 6 and is used for tubular structure's such as steel pipe module outer joint, and pressure sensor 7 is used for the ascending pressure acquisition of this pneumatic circulation direction, and amortization, noise reduction when muffler 8 is used for the compressed air exhaust on this gas circuit.

When the pneumatic testing device is used, according to the pneumatic testing principle of a tested product, the pneumatic testing system of the testing device can adopt an independent basic module unit 100, at the moment, 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-position two-way electromagnetic valves can be disconnected by additionally arranging the screw plug 115. The pneumatic testing system of the testing equipment can also adopt the mode of combining at least two basic module units 100 together for use, at the moment, according to the pneumatic testing principle, the branch channels 16 needing to be communicated in the adjacent basic module units 100 are in butt joint communication, the branch channels 16 needing to be sealed can be provided with plugs 4 to ensure that air flow does not pass through, the branch channels 16 needing to be connected with an external air source or a tested product can be provided with connectors 6 for connection, the branch channels 16 needing to be communicated with the external atmosphere can be provided with silencers 8, the branch channels 16 corresponding to the positions needing to detect pressure can be connected with pressure sensors 7, and then relevant pneumatic testing is carried out.

Therefore, in the present embodiment, the pneumatic testing system is modularized in structure, and includes at least one basic module unit 100, where the basic module unit 100 constitutes functions of two-position two-way solenoid valves, the two-position two-way solenoid valve is the most basic unit of 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 the embodiment can realize different testing function requirements by combining one or at least two basic module units 100, so that the aims of reducing the redesign difficulty of the pneumatic testing system, simplifying and optimizing the gas circuit layout and stabilizing the performance are fulfilled, and the pneumatic testing system is high in universality and expandability, more compact in structure, higher in vibration resistance, smaller in occupied space and more convenient to assemble and maintain. In addition, because the pneumatic test system adopts the modularized design, the air passages in each basic module unit 100 are formed in the valve seat 1, the connection of pipeline elements such as steel pipes, movable joints, elbows and the like is not needed, the connection error is avoided, the physical structures of the pneumatic test system can be ensured to be completely consistent, the test data on different test equipment for the same tested product has good consistency, and a good batch quality control platform is provided for the tested product.

In a specific implementation manner, a first valve port 1112 is arranged in the main channel 11 and near the first layer channel 12, and the valve rod 23 of the first solenoid valve head 21 can close the first valve port 1112 to disconnect the first layer channel 12 from the second layer channel 13. A second valve port 1122 is provided in the main passage 11 and near the fourth layer passage 15, and the valve stem 23 of the second solenoid valve head 22 can close the second valve port 1122 to disconnect the third layer passage 14 from the fourth layer passage 15.

During the installation, first solenoid valve head 21 and second solenoid valve head 22 insert the both ends of main entrance 11 respectively, and first solenoid valve head 21 and second solenoid valve head 22's casing is generally connected fixedly with disk seat 1 through the bolt, through getting electric and losing electric of control first solenoid valve and second solenoid valve, alright the action of its inside valve rod 23 of control to realize opening or closing of the two-way solenoid valve that correspond.

Taking the direction shown in fig. 4 as an example, when the first solenoid valve is powered on, the valve rod 23 in the first solenoid valve head 21 rises, the valve rod 23 is disconnected from the first valve port 1112, the gas path is opened, and the first layer channel 12 and the second layer channel 13 are communicated; when the first solenoid valve is de-energized, the valve rod 23 falls, the valve rod 23 is tightly pressed and sealed with the first valve port 1112, the first valve port 1112 is blocked, and the first layer channel 12 and the second layer channel 13 are disconnected, so that the air path is cut off. The power-on and power-off processes of the second electromagnetic valve are similar to that of the first electromagnetic valve, and are not described in detail herein.

In practical applications, for convenience of processing and installation, as shown in fig. 4 to 6, a first retainer ring 171 and a second retainer ring 172 are formed in the valve seat 1 at positions corresponding to the main passage 11, and the first retainer ring 171 and the second retainer ring 172 are respectively located in the first-layer passage 12 and the fourth-layer passage 15. 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 in the main passage 11 between the first-layer passage 12 and the second-layer passage 13; the second retainer ring 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 in 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 generally, sealing rings 113 are respectively clamped between the first mounting sleeve 111 and the valve seat 1 and between the second mounting sleeve 112 and the valve seat 1 to play a role in auxiliary sealing. Through the double recombination of interference fit and auxiliary seal, realize the connection of each installation cover and disk seat 1, both considered the maintainability of valve port, considered the easy processing nature of valve port again.

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 to be spherical structures, that is, the outer wall of the end of the first mounting sleeve 111 close to 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 close to 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 favorable and less prone to damage, and the sealing effect and the service life are both ensured.

In one specific implementation, 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 air path connection requirements of all the existing test equipment can be met. Of course, each layer of channels may also include other number of branch channels 16 according to actual needs, and this embodiment is merely an example.

It will be appreciated that the first solenoid valve is de-energized to only block communication between the first layer channel 12 and the second layer channel 13, and the second solenoid valve is de-energized to only block communication between the third layer channel 14 and the fourth layer channel 15, but the branch channels 16 in each layer are always in communication with each other and are not affected by de-energization of the solenoid valves.

Preferably, in order to facilitate the processing and installation, and facilitate the assembly and splicing among the plurality of basic module units 100, as shown in fig. 1, the valve seat 1 is a rectangular parallelepiped structure, four branch channels 16 contained in the first layer channel 12 penetrate four sides of the rectangular parallelepiped structure respectively, four branch channels 16 contained in the second layer channel 13 penetrate four sides of the rectangular parallelepiped structure respectively, four branch channels 16 contained in the third layer channel 14 penetrate four sides of the rectangular parallelepiped structure respectively, and four branch channels 16 contained in the fourth layer channel 15 penetrate four sides of the rectangular parallelepiped structure respectively. Generally, two branch channels 16 penetrating the first side 181 and the second side 182 are coaxially arranged in each layer of channels, and 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 equipment comprises at least two basic module units 100, two adjacent basic module units 100 can be detachably and fixedly connected, and the branch channels 16 at the splicing positions in the two adjacent basic module units 100 can be in sealed 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 side surfaces in the rectangular parallelepiped structure is referred to as a first side surface 181 and a second side surface 182, respectively, and the other set of two oppositely disposed side surfaces is referred to as a third side surface 183 and a fourth side surface 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 annular grooves 191 and the portions of the valve seat 1 between the third side surface 183 and the fourth side surface 184 constitute 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, the end face sealing is realized by placing a sealing ring at the end part 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.

Generally, for convenience of positioning, a positioning pin 194 is inserted between two adjacent mounting plates 192 of two adjacent rectangular parallelepiped structures. It will be appreciated that corresponding bolt holes 1921 and locating holes 1922 are provided on mounting plate 192. During assembly, two adjacent basic module units 100 are firstly positioned by the positioning pin 194, the sealing ring is placed at the end part of the corresponding branch channel 16, then the two adjacent mounting plates 192 are fastened by the bolt 193, and the air path elements such as the choke plug 4, the shrinkage plug 5, the joint 6, the pressure sensor 7, the silencer 8 and the like are mounted at the corresponding branch channel 16 on the valve seat 1 according to the pneumatic test principle, so that the assembly can be completed. In this embodiment, the at least two basic unit modules are combined by positioning the positioning pin 194, sealing the end face of the sealing ring, and fastening the bolt 193, and other sealing and fixing manners may be adopted according to the requirement. For the above-mentioned first electromagnetic valve and second electromagnetic valve, an external pilot type electromagnetic valve (prior art) can be adopted, and therefore, there is always air supply outside, as shown in fig. 8, the first electromagnetic valve head 21 and the second electromagnetic valve head 22 are both provided with pilot ports, and the pilot ports are connected with an air source air passage through a hose 24 to ensure normal opening and closing of the electromagnetic valves.

Further, in order to better understand the solution of the present embodiment, the following two applications of the pneumatic testing system of the testing apparatus assembled by using the base module unit 100 are taken as examples to illustrate the working process, specifically as follows:

for convenience of illustration, the 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 first side 181, the second side 182, the third side 183, and the fourth side 184, respectively.

(one) first application: the pneumatic test system of the test equipment is formed by assembling two basic module units 100, and the process that a tested product is inflated and exhausted to two air storage tanks with different volumes can be realized.

As shown in fig. 7 to 12, the two basic module units 100 are respectively referred to as a first basic module unit 101 and a second basic module unit 102, and the third side 183 of the first basic module unit 101 and the fourth side 184 of the second basic module unit 102 are attached to each other and fixed by a bolt 193. 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 in the first base module unit 101 are respectively arranged opposite to the fourth branch channels 164 of the first layer channel 12, the second layer channel 13, the third layer channel 14 and the fourth layer channel 15 in the second base module unit 102.

In the first base module unit 101: other parts are not arranged in the third branch channel 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 joint 6 and is connected with the first volume air storage tank through the joint 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 plugs 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 plugs 4; the first branch channel 161 of the fourth layer channel 15 is connected with the silencer 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 is connected with the air storage tank with the second volume 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; a first branch channel 161 of the third layer channel 14 is connected with the pressure sensor 7, a second branch channel 162 of the third layer channel 14 is connected with the connector 6 and is connected with the output end of the tested product through the connector 6, a third branch channel 163 of the third layer channel 14 is connected with the plug 4, and a 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 choke 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 choke plug 4.

During testing, air exhausted 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 open first solenoid valve in first basic module unit 101 this moment, the air can flow into first volumetric air holder, can realize filling wind in first volumetric air holder, utilizes pressure sensor 7 can gather the pressure variation at this in-process to how long can accomplish filling wind to first volumetric air holder in the test. If the first solenoid valve in the second basic module unit 102 is opened (at this time, the first solenoid valve in the first basic module unit 101 is closed), air can flow into the air storage tank with the second volume, and air charging into the air storage tank with the second volume can be realized, and in the process, pressure change can be collected by using the pressure sensor 7, so that how long the air charging into the air storage tank with the second volume can be completed can be tested.

When the air storage tank with the first volume needs to be exhausted, 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 gas in the air storage tank with the first volume can be exhausted through the silencer 8 connected to the first basic module unit 101, the pressure during the exhaust can be collected through the pressure sensor 7 in the process, and the exhaust can be completed for a long time. When the air storage tank with the second volume needs to be exhausted, the first electromagnetic valve in the second basic module unit 102 is closed, and the second electromagnetic valve in the second basic module unit 102 is opened, so that the air in the air storage tank with the second volume can be exhausted at a certain flow rate through the shrinkage plug 5 connected to the second basic module unit 102, and the pressure during the exhaust can be acquired through the pressure sensor 7 in the process.

(II) second application: the pneumatic test system of the test equipment is formed by assembling three basic module units 100, and can realize the functions of air charging, pressure maintaining and air exhausting in a pneumatic environment, for example, the functions of air charging, pressure maintaining and air exhausting with different pressures of common cylinders and spring cylinders in a brake clamp unit, a brake cylinder and a tread brake unit are realized, so that the relevant test item point test is conveniently carried out.

As shown in fig. 13 to 17, the three basic module units 100 are respectively referred to as a first basic module unit 101, a second basic module unit 102, and a third basic module unit 103, wherein a third side 183 of the first basic module unit 101 is attached to and fixed to a fourth side 184 of the second basic module unit 102, and a third side 183 of the second basic module unit 102 is attached to and fixed to a fourth side 184 of the third basic 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 basic module unit 101 are respectively arranged 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 basic module unit 102, 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 basic module unit 102 are respectively arranged 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 basic module unit 103.

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 internally connected with the 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 an air source; the third layer channel 14 and the fourth layer channel 15 are respectively arranged in mirror symmetry with the second layer channel 13 and the first layer channel 12, that is, the first branch channel 161, the second branch channel 162 and the third branch channel 163 of the third layer channel 14 are all connected with the plug 4, and the fourth branch channel 164 of the third layer channel 14 is connected with the 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 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 both connected with the plug 4, and other components are not 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 other parts are not 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 arranged in mirror symmetry 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 a silencer 8, a second branch channel 162 and a third branch channel 163 of the third layer channel 14 are both connected with a 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 basic 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; a first branch channel 161 of the second layer channel 13 is connected with the pressure sensor 7, a second branch channel 162 of the second layer channel 13 is connected with the joint 6 and is connected with the common cylinder through the joint 6, a third branch channel 163 of the second layer channel 13 is connected with the plug 4, and other components are not arranged in a fourth branch channel 164 of the second layer channel 13; a first branch channel 161 of the third layer channel 14 is connected with the pressure sensor 7, a 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, a third branch channel 163 of the third layer channel 14 is connected with the plug 4, and other components are not arranged in a 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 channel 11 of the third basic module unit 103 between the second layer channel 13 and the third layer channel 14.

During testing, after the total wind is subjected to primary pressure regulation through a corresponding pressure regulating valve and secondary pressure regulation through a 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, closing the first electromagnetic valve in the first basic module unit 101 and the first electromagnetic valve in the third basic module unit 103, and opening the first electromagnetic valve in the second basic module unit 102, and exhausting the air in the corresponding channel in the system from the second layer channel 13 of the second basic module unit 102 to the atmosphere, so as to realize the pressure maintaining of the common cylinder; then, the first solenoid valve of the third basic module unit 103 is opened, and the air in the common cylinder can be exhausted from the second layer channel 13 of the second basic module unit 102 to realize the air exhaust of the common cylinder. During the process of charging and discharging air to and from the conventional cylinders, the pressure change can be acquired by the corresponding pressure sensor 7.

On the other hand, the corresponding output pressure air enters the first basic module unit 101 through the fourth branch channel 164 of the third layer channel 14 in the first basic module unit 101 (it is understood that the second layer channel 13 and the third layer channel 14 in the first basic module unit 101 are also communicated at this time), and after the second electromagnetic valve of the first basic module unit 101 and the second electromagnetic valve of the third basic module unit 103 are opened, the air inflation of the spring cylinder can be realized; then, the second solenoid valve in the first basic module unit 101 and the second solenoid valve in the third basic module unit 103 are closed, and the second solenoid valve in the second basic module unit 102 is opened, so that the pressure maintaining of the spring cylinder can be realized; after that, the second solenoid valve of the third basic module unit 103 is opened, so that the exhaust of the spring cylinder can be realized, and the pressure change can be collected by the corresponding pressure sensor 7. The concrete process is similar to the processes of air charging, pressure maintaining and air discharging of a common cylinder, and is not described in detail.

Of course, the above two application scenarios are only examples, and in practical application, development of a pneumatic test system of a specific test device can be realized by combining corresponding gas circuit elements based on the basic module unit 100 according to the pneumatic test principle of a tested product and the assembly method. That is, according to the specific pneumatic testing principle of the tested product, different numbers of basic module units 100 are spliced and combined, and then corresponding air path elements such as plugs 4, plugs 5, connectors 6, pressure sensors 7, silencers 8 and the like are added to corresponding branch channels 16, so that the corresponding air paths are connected or disconnected by controlling the opening and closing of corresponding electromagnetic valves, and different testing requirements can be met.

In summary, in the pneumatic testing system of the testing apparatus in this embodiment, the basic module unit 100 is implemented by combining the valve seat 1, the two electromagnetic valve heads and the two valve ports, and has functions of the first electromagnetic valve and the second electromagnetic valve, and each electromagnetic 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 of the first electromagnetic valve are provided with four connecting ends, one of the four connecting ends corresponds to the four branch channels 16 of the first layer channel 12, the other one corresponds to the four branch channels 16 of the second layer channel 13, and each branch channel 16 can be provided with a 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 circuit connection, the valve seat 1 has an up-down symmetrical structure, and has four layers of channels, four branch channels 16 in each layer of channel are communicated, a thread structure is reserved in each branch channel 16, and the requirement of pipe element connection can be met, for example, a thread sealing mode can be adopted when the branch channels 16 are connected with elements such as a plug 4, a plug 5, a joint 6, a pressure sensor 7 or a silencer 8; the threaded hole penetrates through the central plane 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 plug can be installed according to the requirement of the pneumatic principle to control the air flow, or a plug 115 is installed at the position to realize the 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, a modularized and simple design scheme is provided, and the requirements of different pneumatic principles can be met 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 modularizes the structure to develop the basic module unit 100, the whole system can be realized by combining different numbers of basic module units 100, the redesign difficulty and workload of the pneumatic test system are greatly reduced, and the engineering development of the pneumatic test system can be realized only by carrying out structure splicing based on the basic module unit 100 according to the pneumatic principle of the tested product.

(2) Standardized operation guidance can be formed, standardized flows are established from design, production, assembly, processes and the like, and a mature process is formed, so that the full life cycle time of pneumatic test system development is shortened, the production efficiency is improved, and the production difficulty, period and cost are reduced.

(3) The maintenance operation difficulty can be reduced, only the damaged valve head of the electromagnetic valve needs to be directly replaced, the electromagnetic valve and the associated pipe fitting need to be detached and replaced in the prior art, and the workload is large.

(4) The modularized pneumatic test system has smaller required space and compact and firm structure, thereby improving the vibration resistance and reducing the failure rate of test equipment.

(5) The pneumatic test system has stronger universality and expandability, and for all the existing test equipment, the pneumatic test system can be basically composed of one or at least two basic module units 100, so that a good universal application effect is achieved.

(6) The consistency of the test data can be improved, and the consistency of different test equipment to the test data of the same tested product can be well ensured due to the fact that the physical structures of the test equipment are completely consistent, so that the quality control of batch products is improved.

The above are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims (11)

1. A pneumatic test system for test equipment 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 of channel, a second layer of channel, a third layer of channel and a fourth layer of 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 of channel, the second layer of channel, the third layer of channel and the fourth layer of 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 communicated with or disconnected from the first layer of channel and the second layer of channel, and the second electromagnetic valve head is fixedly arranged on the second end face of the valve seat and can be communicated with or disconnected from the third layer of channel and the fourth layer of channel.

2. The pneumatic test system of a test rig of claim 1,

a plug or a plug is detachably connected in the main channel and between the second layer channel and the third layer channel.

3. The pneumatic test system of a test rig of claim 1,

the outer side end of the branch channel is detachably connected with a plug, a shrinkage plug, a joint, a pressure sensor or a silencer.

4. The pneumatic test system of a test rig of claim 1,

a first valve port is arranged in the main channel and close to the first layer of channel, and a valve rod of the first electromagnetic valve head can seal the first valve port; and a second valve port is arranged in the main channel and close to the fourth layer of channel, and a valve rod of the second electromagnetic valve head can block the second valve port.

5. The pneumatic test system of a test rig of claim 4,

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 mounting sleeve and a second mounting sleeve are inserted into the main channel, and the outer walls of the first mounting sleeve and the second mounting sleeve are respectively provided with a first convex ring and a second convex ring in a protruding manner;

the first mounting sleeve and the second mounting sleeve are in interference fit with the hole wall of the main channel, the first convex ring abuts against the first limiting ring, the second convex ring abuts against the second limiting ring, the end part of the first mounting sleeve, which is close to the first end of the valve seat, forms the first valve port, and the end part of the second mounting sleeve, which is close to the second end of the valve seat, forms the second valve port.

6. The pneumatic test system of a test rig of claim 5,

the outer wall of the end part of the first mounting 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 mounting sleeve, which is close to the second end of the valve seat, is a spherical surface.

7. The pneumatic test system of a test rig of claim 1,

the first layer channel, the second layer channel, the third layer channel and the fourth layer channel comprise four branch channels which are communicated with each other.

8. The pneumatic test system of a test rig of claim 7,

the disk seat is the cuboid structure, four that first layer passageway contains the branch passageway pierces through respectively four sides of cuboid structure, four that second floor passageway contains the branch passageway pierces through respectively four sides of cuboid structure, four that third layer passageway contains the branch passageway pierces through respectively four sides of cuboid structure, four that fourth layer passageway contains the branch passageway pierces through respectively four sides of cuboid structure.

9. The pneumatic test system of a test rig of claim 8,

the pneumatic testing system of the testing equipment comprises at least two basic module units, wherein every two adjacent basic module units are detachably and fixedly connected, and the branch channels at the splicing positions in the two adjacent basic module units can be in sealed butt joint.

10. The pneumatic test system of a test rig of claim 9,

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;

the first side surface and the second side surface are both provided with annular grooves, the annular grooves are arranged around the branch channels of the second layer of channel and the third layer of channel, and the annular grooves and the part of the valve seat between the third side surface and the fourth side surface form mounting plates; in two adjacent cuboid structures, the branch channel on the third side of one cuboid structure can be in sealed butt joint with the branch channel on the fourth side of the other cuboid structure, and two adjacent mounting plates of the two adjacent cuboid structures are connected through bolts.

11. The pneumatic test system of a test rig of claim 10,

and a positioning pin is also inserted between two adjacent mounting plates of the two adjacent cuboid structures.

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