CN214384532U - Pneumatic test system for railway vehicle foundation brake product - Google Patents

Abstract

The utility model relates to a pneumatic test system of railway vehicle foundation brake product, including main gas circuit board, be equipped with total wind pressure regulating valve, pressure proportional valve and be two first solenoid valve, second solenoid valve, third solenoid valve, fourth solenoid valve, fifth solenoid valve and the sixth solenoid valve of two-way solenoid valve on main gas circuit board. The outlet end of the main air pressure regulating valve is communicated with the inlet end of the pressure proportional valve through a corresponding air circuit arranged in the main air circuit board, and the outlet end of the pressure proportional valve is communicated with a first branch port and a second branch port which are arranged on the main air circuit board. The first branch port is communicated with the inlet end of the first electromagnetic valve through a corresponding air path arranged on the main air circuit board, the outlet end of the second electromagnetic valve is communicated with the outside atmosphere, and the outlet end of the third electromagnetic valve is used for being connected with the inlet end of a common cylinder. The utility model discloses compact structure, small, the equipment of being convenient for is maintained, and the test uniformity to test equipment application in batches improves and has obvious effect.

Description

Pneumatic test system for railway vehicle foundation brake product

Technical Field

The utility model relates to a rail transit technical field especially relates to a pneumatic test system of railway vehicle foundation brake product.

Background

At present, basic brake products of railway vehicles mainly comprise a brake clamp unit and a tread brake unit, and the products can be loaded after being tested to be qualified through professional test equipment. For the brake caliper unit, the brake cylinder of the whole and main parts needs to be subjected to performance tests, that is, at present, three types of test equipment are used for carrying out factory routine tests or overhaul tests on the brake caliper unit, the brake cylinder and the tread brake unit so as to ensure the quality of products. The principle of a main air path of the pneumatic testing system which is an important component of the three types of test equipment is basically consistent, and the pneumatic testing system realizes the functions of air charging, pressure maintaining and air exhausting with different pressures for a brake clamp unit, a brake cylinder and a common cylinder and a spring cylinder in a tread brake unit through the provided pneumatic environment so as to simulate the use state of a product on a vehicle; however, the pneumatic testing system of the testing equipment has different principles and structures because the equipment provides auxiliary functions for the tested product in the testing process, such as different actuating mechanisms of the protection device, the mounting tool and the like, and the required air path control principles and structures are different, so that the finally presented pneumatic testing system principles and structures of the testing equipment are not the same. The test items which can be mainly realized by the pneumatic test system through the provided pneumatic environment and the corresponding auxiliary action comprise a strength test, a leakage test, an action stroke, a primary adjustment quantity, a maximum effective piston stroke, a brake cylinder output force, a parking cylinder manual release, a maximum effective piston stroke and the like.

However, the pneumatic test system of the existing equipment is basically of a pipeline structure, and is realized by connecting pipeline elements such as steel pipes, movable joints, elbows, counterwires and the like or connecting the control electromagnetic valve through a hose with strong flexibility, so that the assembly and maintenance difficulty is high; because the number of pipeline connecting pieces is large, a pneumatic test system is caused, the air leakage probability is increased, and the use reliability of equipment is influenced; in the process of equipment transportation, the failure rate of a pneumatic test system caused by vibration is high; once leakage occurs, the difficulty of searching leakage points and rectifying and reforming work is high; the shared volume of pipeline structure is great, and the required maintenance space in later stage is also great, and the pneumatic test system leads to the holistic volume grow of test equipment in the shared space increase of whole test equipment.

Moreover, 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 also exist in spatial coordinate points, so that the spatial physical structure of the pneumatic test system has certain differences, and when a tested product is subjected to performance test, the consistency of test data is poor due to the difference of air resistance of the pneumatic test systems with different structures.

In addition, a leakage grade (the leakage grade is mainly aimed at a main gas circuit part) which is an important performance parameter influencing the precision of the pneumatic test system, and the current generalized leakage test mode is a test mode which is complex and cannot realize zero leakage by acquiring air pressure difference within a certain time through a sensor connected to a gas circuit to judge the leakage grade (including the comprehensive error of an acquisition system and a pneumatic system).

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

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic test system of railway vehicle foundation brake product, compact structure, small, the equipment of being convenient for is maintained, and the test uniformity to test equipment application in batches improves and has obvious effect.

The utility model aims at realizing the pneumatic testing system of the basic brake product of the railway vehicle, which comprises a main gas circuit board; the main gas circuit board is provided with a main air pressure regulating valve, a pressure proportional valve, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve and a sixth electromagnetic valve which are two-position two-way electromagnetic valves; the outlet end of the main air pressure regulating valve is communicated with the inlet end of a pressure proportional valve through a corresponding air passage arranged in the main air circuit board, and the outlet end of the pressure proportional valve is communicated with a first branch port and a second branch port which are arranged on the main air circuit board; the first branch port is communicated with the inlet end of the first electromagnetic valve through a corresponding air path arranged on the main air circuit board, the outlet end of the first electromagnetic valve, the inlet end of the second electromagnetic valve and the inlet end of the third electromagnetic valve are communicated with each other through a corresponding air path arranged on the main air circuit board, the outlet end of the second electromagnetic valve is communicated with the outside atmosphere, and the outlet end of the third electromagnetic valve is used for connecting the inlet end of a common cylinder; the second branch port is communicated with the inlet end of a fourth electromagnetic valve through a corresponding air path arranged on the main air circuit board, the outlet end of the fourth electromagnetic valve, the inlet end of a fifth electromagnetic valve and the inlet end of a sixth electromagnetic valve are communicated with each other through a corresponding air path arranged on the main air circuit board, the outlet end of the fifth electromagnetic valve is communicated with the outside atmosphere, and the outlet end of the sixth electromagnetic valve is used for connecting the inlet end of a spring cylinder.

In a preferred embodiment of the present invention, the pneumatic testing system for railway vehicle foundation brake products further comprises an auxiliary air plate fixedly connected to the main air plate; the auxiliary air circuit board is provided with an auxiliary pressure regulating valve and a plurality of auxiliary electromagnetic valves, the inlet end of the auxiliary pressure regulating valve is communicated with the outlet end of the main air pressure regulating valve through corresponding air circuits arranged on the main air circuit board, the outlet end of the auxiliary pressure regulating valve is communicated with the inlets of the auxiliary electromagnetic valves through corresponding air circuits arranged on the auxiliary air circuit board, and each auxiliary electromagnetic valve is respectively used for being connected with an actuating mechanism.

The utility model discloses an in a preferred embodiment, the pressure proportional valve is established on the top surface of main gas board, and the valve head of first solenoid valve, second solenoid valve, third solenoid valve, fourth solenoid valve, fifth solenoid valve, sixth solenoid valve and each auxiliary solenoid valve all is located the position more than the top surface of main gas board, and the disk seat of first solenoid valve, second solenoid valve, third solenoid valve, fourth solenoid valve, fifth solenoid valve and sixth solenoid valve all is located the position below the top surface of main gas board.

The present invention provides a preferred embodiment, wherein a forward filter is further disposed at the inlet end of the main air pressure regulating valve, a first reverse filter and a second reverse filter are disposed at the outlet end of the third solenoid valve and the outlet end of the sixth solenoid valve, and the forward filter, the first reverse filter and the second reverse filter are disposed at positions below the top surface of the main air plate.

The utility model discloses an among the preferred embodiment, still be equipped with total pressure sensor, first pressure sensor and second pressure sensor on the top surface of main gas circuit board, total pressure sensor corresponds the corresponding gas circuit setting of the exit end that is close to total wind pressure regulating valve on the main gas circuit board, and first pressure sensor corresponds the corresponding gas circuit setting of the exit end that is close to the third solenoid valve on the main gas circuit board, and second pressure sensor corresponds the corresponding gas circuit setting of the exit end that is close to the sixth solenoid valve on the main gas circuit board.

The utility model discloses an among the preferred embodiment, still be equipped with main pressure table and supplementary manometer respectively on main gas circuit board and supplementary gas circuit board, the corresponding gas circuit setting of the exit end intercommunication with total wind pressure regulating valve on the main gas circuit board of main pressure table correspondence, supplementary manometer corresponds on the supplementary gas circuit board with the corresponding gas circuit setting of the exit end intercommunication of supplementary air-vent valve.

In a preferred embodiment of the present invention, the main air plate includes a first clamping plate and a second clamping plate; a first air channel and a second air channel which are mutually independent are arranged in the first clamping plate, and a first interface, a second interface and a third interface which are communicated with the first air channel, and a fourth interface, a fifth interface and a sixth interface which are communicated with the second air channel are arranged on the first side of the first clamping plate; the second splint is provided with a first channel and a fourth channel which are communicated with the first side and the top surface of the second splint, and a second channel, a third channel, a fifth channel and a sixth channel which run through the two sides of the second splint, and the first interface, the second interface, the third interface, the fourth interface, the fifth interface and the sixth interface are respectively arranged opposite to the first channel, the second channel, the third channel, the fourth channel, the fifth channel and the sixth channel; valve seats of the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are clamped between the first side of the first clamping plate and the first side of the second clamping plate, and the first clamping plate and the second clamping plate are fixedly connected through a plurality of first fasteners;

ports in the first channel and the fourth channel, which are close to the top surface of the second clamping plate, respectively form a first branch port and a second branch port, the inlet end and the outlet end of the first electromagnetic valve are respectively in sealing connection with the first channel and the first interface, the inlet end and the outlet end of the second electromagnetic valve are respectively in sealing connection with the second interface and the second channel, and the inlet end and the outlet end of the third electromagnetic valve are respectively in sealing connection with the third interface and the third channel; the inlet end and the outlet end of the fourth electromagnetic valve are respectively connected with the fourth channel and the fourth port in a sealing manner, the inlet end and the outlet end of the fifth electromagnetic valve are respectively connected with the fifth port and the fifth channel in a sealing manner, and the inlet end and the outlet end of the sixth electromagnetic valve are respectively connected with the sixth port and the sixth channel in a sealing manner; first reverse filter and second reverse filter all set firmly in the second side of second splint and just to the position of third passageway and sixth passageway respectively, and the tip that is close to second splint second side in second passageway and the fifth passageway all communicates with external atmosphere.

In a preferred embodiment of the present invention, an L-shaped plate is integrally formed on the second side of the second clamping plate, the L-shaped plate includes a first plate with a plate surface perpendicular to the side surface of the second clamping plate and a second plate with a plate surface parallel to the side surface of the second clamping plate and spaced from the side surface of the second clamping plate, and one side of the second plate, which is away from the second clamping plate, is used as the outer side surface thereof; an L-shaped third air path is formed in the L-shaped plate body along the L-shaped section of the L-shaped plate body, a fourth air path which is communicated with the third air path and penetrates through the outer side surface of the second plate body is further formed in the position, far away from the first plate body, in the second plate body, and the part, located in the first plate body, of the third air path extends to the outer side surface of the second plate body to form a fifth air path which penetrates through the outer side surface of the second plate body; the main air pressure regulating valve and the auxiliary pressure regulating valve are fixedly arranged on the outer side surface of the second plate body, and the outlet end of the main air pressure regulating valve and the inlet end of the auxiliary pressure regulating valve are respectively arranged over against the fourth air path and the fifth air path; and a sixth air passage communicated with the third air passage and penetrating through the top surface of the second clamping plate is arranged in the second clamping plate at a position corresponding to the end part of the third air passage, and the pressure proportional valve is fixedly arranged on the top surface of the second clamping plate and the inlet end of the pressure proportional valve is communicated with the sixth air passage.

The utility model discloses an among the preferred embodiment, in the second plate body and be close to the position on fourth gas circuit still set up with third gas circuit intercommunication and pierce through the seventh gas circuit of second plate body top surface, still be equipped with in the L shaped plate body with third gas circuit intercommunication and pierce through the eighth gas circuit of L shaped plate body top surface, still set up respectively with third passageway and sixth passageway intercommunication and all pierce through ninth gas circuit and the tenth gas circuit of second splint top surface in the second splint, total pressure sensor, main pressure gauge, first pressure sensor and second pressure sensor are just to the seventh gas circuit respectively, the eighth gas circuit, ninth gas circuit and tenth gas circuit set up.

In a preferred embodiment of the present invention, an eleventh air channel having one end penetrating through the outer side surface of the second clamping plate and communicating with the external atmosphere and the other end penetrating through the top surface of the second clamping plate and facing the air outlet of the pressure proportional valve is further disposed in the second clamping plate.

In a preferred embodiment of the present invention, the auxiliary air channel plate is an L-shaped air channel plate, which includes a first auxiliary plate and a second auxiliary plate parallel to the surfaces of the first plate and the second plate, respectively, and one side of the second auxiliary plate facing the second plate is used as an inner side surface thereof; the pressure regulating valve is clamped between the second plate body and the second auxiliary plate, the outlet end of the auxiliary pressure regulating valve is opposite to the second auxiliary gas circuit, the second plate body and the second auxiliary plate are fixedly connected through a plurality of second fasteners, and the auxiliary pressure gauge is opposite to the third auxiliary gas circuit; still set up in L shape gas circuit board with first supplementary gas circuit intercommunication and all pierce through a plurality of fourth supplementary gas circuits of supplementary gas circuit board top surface, each supplementary solenoid valve all sets firmly on the top surface of first auxiliary plate, and the entry of each supplementary solenoid valve is just to setting up with the fourth supplementary gas circuit that corresponds respectively.

The utility model discloses an in a preferred embodiment, first solenoid valve, second solenoid valve, third solenoid valve, fourth solenoid valve, fifth solenoid valve and sixth solenoid valve are outer pilot type solenoid valve, and the part that first supplementary gas circuit is located first accessory plate extends to form the fifth supplementary gas circuit that pierces through second accessory plate lateral surface to the lateral surface of second accessory plate, and fifth supplementary gas circuit leads to the trachea and all communicates with the pilot port of first solenoid valve, second solenoid valve, third solenoid valve, fourth solenoid valve, fifth solenoid valve and sixth solenoid valve.

In a preferred embodiment of the present invention, the actuator is a cylinder, each of the auxiliary solenoid valves is a two-position five-way solenoid valve, and a sixth auxiliary gas circuit having one end penetrating through the top surface of the auxiliary gas circuit board and the other end penetrating through the side surface or the bottom surface of the auxiliary gas circuit board and communicating with the external atmosphere is further disposed in the L-shaped gas circuit board and on both sides of each fourth auxiliary gas circuit; the inlet of the two-position five-way electromagnetic valve is communicated with the outlet end of the auxiliary pressure regulating valve, the two air outlets of the two-position five-way electromagnetic valve are respectively arranged opposite to the corresponding sixth auxiliary air passage, and the two working ports of the two-position five-way electromagnetic valve are respectively communicated with the two interfaces of the air cylinder.

In a preferred embodiment of the present invention, a constriction is provided at the outlet end of the pressure proportional valve; and a first silencer and a second silencer are respectively arranged at the outlet end of the second electromagnetic valve and the outlet end of the fifth electromagnetic valve.

From the above, the pneumatic testing system of the utility model integrates the main air pressure regulating valve, the pressure proportional valve and each electromagnetic valve on the main circuit board, so that the structure is more compact, the vibration resistance is stronger, the occupied space is smaller, and the assembly and maintenance are more convenient; the pneumatic environment can be provided to realize air charging, pressure maintaining and air discharging of the common cylinder and the spring cylinder so as to facilitate the related test item tests; and each relevant gas circuit all forms in main gas circuit board, need not pipeline components such as steel pipe, union, elbow and connects, and the gas circuit processing is accomplished and is connected the back with total wind pressure regulating valve, pressure proportional valve and each solenoid valve in the main gas circuit board, and the size is the fixed value, can not cause connection error, and consequently, this system space physics structure also can guarantee completely unanimous, and to same tested piece, the test data on different pneumatic test systems has fine uniformity.

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: does the utility model provides a pneumatic test system's of railway vehicle foundation brake product stereogram one.

FIG. 2: do the utility model provides a pneumatic test system's of railway vehicle foundation brake product stereogram two.

FIG. 3: to the utility model provides a pneumatic test system's of railway vehicle foundation brake product plan view.

FIG. 4: to the utility model provides a pneumatic test system's of railway vehicle foundation brake product front view.

FIG. 5: to the utility model provides a pneumatic test system's of railway vehicle foundation brake product side view.

FIG. 6: to the utility model provides a structural schematic of first splint.

FIG. 7: which is a cross-sectional view taken along the direction B-B in fig. 6.

FIG. 8: to the utility model provides a top view of second splint.

FIG. 9: to the utility model provides a structural schematic of second splint.

FIG. 10: is a cross-sectional view taken along the direction C-C in fig. 9.

FIG. 11: do the utility model provides a top view of supplementary gas circuit board.

FIG. 12: do the utility model provides a cross-sectional view of supplementary gas circuit board.

FIG. 13: do the utility model provides a pneumatic schematic diagram of pneumatic test system of railway vehicle foundation brake product.

FIG. 14: a partial enlarged view at D in fig. 13.

The reference numbers illustrate:

1. a main gas panel;

11. a first splint; 111. a first gas path; 112. a second gas path; 113. a first interface; 114. a second interface; 115. a third interface; 116. a fourth interface; 117. a fifth interface; 118. a sixth interface;

12. a second splint; 121. a first channel; 1211. a first branch port; 122. a second channel; 123. a third channel; 124. a fourth channel; 1241. a second branch port; 125. a fifth channel; 126. a sixth channel;

13. an L-shaped plate body; 131. a first plate body; 132. a second plate body; 133. a third gas path; 134. a fourth gas path; 135. a fifth gas path; 136. a sixth gas path; 137. a seventh gas path; 138. an eighth gas path; 139. a ninth gas path; 1310. a tenth gas path; 1311. an eleventh gas path;

14. a first fastener; 15. a second fastener;

2. a main air pressure regulating valve; 21. a forward filter; 22. a total pressure sensor; 23. a main pressure gauge;

3. a pressure proportional valve; 31. shrinking and plugging;

4. a common group of electromagnetic valves; 41. a first solenoid valve; 42. a second solenoid valve; 421. a first muffler; 43. a third electromagnetic valve; 431. a first reverse filter; 432. a first pressure sensor;

5. a spring set solenoid valve; 51. a fourth solenoid valve; 52. a fifth solenoid valve; 521. a second muffler; 53. a sixth electromagnetic valve; 531. a second reverse filter; 532. a second pressure sensor;

6. an auxiliary gas circuit board; 61. a first auxiliary plate; 62. a second auxiliary plate; 63. a first auxiliary gas path; 64. a second auxiliary gas path; 65. a third auxiliary gas path; 66. a fourth auxiliary gas path; 67. a fifth auxiliary gas path; 671. an air tube; 68. a sixth auxiliary gas path;

7. an auxiliary pressure regulating valve; 71. an auxiliary pressure gauge;

8. an auxiliary solenoid valve;

90. a total wind source; 91. a common cylinder; 92. a spring cylinder; 93. and an actuator.

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 14, the present embodiment provides a pneumatic testing system for basic brake products of railway vehicles, which includes a main air plate 1, and a main air pressure regulating valve 2, a pressure proportional valve 3, and a first electromagnetic valve 41, a second electromagnetic valve 42, a third electromagnetic valve 43, a fourth electromagnetic valve 51, a fifth electromagnetic valve 52, and a sixth electromagnetic valve 53, which are two-position two-way electromagnetic valves, are disposed on the main air plate 1.

The outlet end of the main air pressure regulating valve 2 is communicated with the inlet end of the pressure proportional valve 3 through a corresponding air passage arranged in the main air plate 1, and the outlet end of the pressure proportional valve 3 is communicated with a first branch opening 1211 and a second branch opening 1241 which are arranged on the main air plate 1. The first branch 1211 is communicated with the inlet end of the first solenoid valve 41 through corresponding air passages formed in the main air plate 1, the outlet end of the first solenoid valve 41, the inlet end of the second solenoid valve 42 and the inlet end of the third solenoid valve 43 are communicated with each other through corresponding air passages formed in the main air plate 1, the outlet end of the second solenoid valve 42 is communicated with the outside atmosphere, and the outlet end of the third solenoid valve 43 is used for being connected with the inlet end of the common cylinder 91. The second branch orifice 1241 is communicated with the inlet end of the fourth solenoid valve 51 through a corresponding air passage formed in the main air plate 1, the outlet end of the fourth solenoid valve 51, the inlet end of the fifth solenoid valve 52 and the inlet end of the sixth solenoid valve 53 are communicated with each other through a corresponding air passage formed in the main air plate 1, the outlet end of the fifth solenoid valve 52 is communicated with the outside atmosphere, and the outlet end of the sixth solenoid valve 53 is used for connecting the inlet end of the spring cylinder 92.

The first solenoid valve 41, the second solenoid valve 42, and the third solenoid valve 43 are a set of solenoid valves 4, which are referred to as a common set, and the fourth solenoid valve 51, the fifth solenoid valve 52, and the sixth solenoid valve 53 are a set of solenoid valves 5, which are referred to as a spring set, and the common set solenoid valves 4 and the spring set solenoid valves 5 are respectively used for controlling the common cylinder 91 and the spring cylinder 92 with compressed air. In addition, a corresponding computer system (prior art) is provided as required for controlling the operation of the pressure proportional valve 3 and the solenoid valves.

When the pneumatic testing device is used, the outlet end of the third electromagnetic valve 43 and the outlet end of the sixth electromagnetic valve 53 are respectively connected with the common cylinder 91 and the spring cylinder 92, the inlet end of the main air pressure regulating valve 2 is connected with the main air source 90 and carries out primary pressure regulation on air, then the air is supplied to the pressure proportional valve 3, the pressure proportional valve 3 controls and outputs compressed air with different pressures through the analog quantity of a computer system (the specific output pressure is determined according to the test pressure required by a tested piece), and the compressed air carries out air charging, pressure maintaining and air exhaust control on the common cylinder 91 and the spring cylinder 92 through the common group electromagnetic valve 4 and the spring group electromagnetic valve 5 which are integrated on the main circuit board 1; the method specifically comprises the following steps:

on one hand, the compressed air enters the common set electromagnetic valve 4 after passing through the first branch 1211, firstly, the first electromagnetic valve 41 and the third electromagnetic valve 43 are opened, the second electromagnetic valve 42 is kept closed, and the compressed air flows into the common cylinder 91 through the first electromagnetic valve 41 and the third electromagnetic valve 43, so that the common cylinder 91 is inflated; then, the first electromagnetic valve 41 and the third electromagnetic valve 43 are closed, the second electromagnetic valve 42 is opened, and the compressed air in the related air path in the main air plate 1 is exhausted to the outside atmosphere through the second electromagnetic valve 42, so that the pressure maintaining of the common cylinder 91 is realized; then, the third electromagnetic valve 43 is opened, and the compressed air in the normal cylinder 91 is discharged to the outside atmosphere through the third electromagnetic valve 43 and the second electromagnetic valve 42, thereby realizing the air discharge to the normal cylinder 91. On the other hand, the compressed air enters the spring group electromagnetic valve 5 through the second branch orifice 1241, and the air charging, pressure maintaining and air discharging of the spring cylinder 92 can be realized by controlling the on-off of the fourth electromagnetic valve 51, the fifth electromagnetic valve 52 and the sixth electromagnetic valve 53, and the specific process is similar to the air charging, pressure maintaining and air discharging process of the common cylinder 91, and is not described herein again.

Therefore, the pneumatic testing system in the embodiment integrates the main air pressure regulating valve 2, the pressure proportional valve 3 and the electromagnetic valves on the main gas circuit board 1, so that the pneumatic testing system is more compact in structure, stronger in vibration resistance, smaller in occupied space and more convenient to assemble and maintain; a pneumatic environment can be provided to realize air charging, pressure maintaining and air discharging of the common cylinder 91 and the spring cylinder 92 so as to facilitate the related test item tests; and each relevant gas circuit all forms in main gas circuit board 1, need not pipeline components such as steel pipe, union, elbow and connect, and the gas circuit processing is accomplished and is connected the completion back with total wind pressure regulating valve 2, pressure proportional valve 3 and each solenoid valve in main gas circuit board 1, and the size is the fixed value, can not cause connection error, and consequently, this system space physical structure also can guarantee completely unanimous, to same piece under test, the test data on different pneumatic test systems has fine uniformity.

In particular embodiments, because relatively few test point trials can be performed by relying only on the main airway portion, more test point trials will typically be performed in conjunction with corresponding assistance. Therefore, in this embodiment, the pneumatic testing system for basic brake products of railway vehicles further includes an auxiliary air plate 6 fixedly connected to the main air plate 1, an auxiliary pressure regulating valve 7 and a plurality of auxiliary electromagnetic valves 8 are disposed on the auxiliary air plate 6, an inlet end of the auxiliary pressure regulating valve 7 is communicated with an outlet end of the main air pressure regulating valve 2 through a corresponding air passage formed on the main air plate 1, an outlet end of the auxiliary pressure regulating valve 7 is communicated with inlets of the auxiliary electromagnetic valves 8 through corresponding air passages formed on the auxiliary air plate 6, and each auxiliary electromagnetic valve 8 is respectively used for connecting an executing mechanism 93.

Because the output pressure of total wind pressure regulating valve 2 is higher to pressure proportional valve 3 exports different pressures as required, and the required pressure of supplementary gas circuit part is relatively lower, consequently, is provided with supplementary air-vent valve 7 and carries out the secondary pressure regulating to the pressure that total wind pressure regulating valve 2 exported. The specific structures of the pressure proportional valve 3 and the six electromagnetic valves on the main gas board 1 and the auxiliary electromagnetic valves 8 on the auxiliary gas board 6 are the prior art, and are not described herein again.

When in use, each auxiliary electromagnetic valve 8 is respectively connected with an actuating mechanism 93, the corresponding actuating mechanism 93 is selected according to different auxiliary functions to be realized, and the corresponding auxiliary electromagnetic valve 8 is selected according to different actuating mechanisms 93. One path of air after primary pressure regulation is carried out on the main air pressure regulating valve 2 is supplied to the pressure proportional valve 3, the other path of air is supplied to each auxiliary electromagnetic valve 8 after secondary pressure regulation of the auxiliary pressure regulating valve 7, and each auxiliary electromagnetic valve 8 is controlled to be opened by a computer system, so that air is supplied and exhausted to the corresponding actuating mechanism 93, and the control of the actuating mechanism 93 is also realized. When the test system is used, after the whole system is connected with the common cylinder 91, the spring cylinder 92, the main air source 90 and each actuating mechanism 93, more test item tests can be carried out through the pneumatic environment provided by the main air path and the auxiliary effect realized by the auxiliary air path matched with the actuating mechanism 93, and the specific test process is the prior art.

More preferably, the pressure proportional valve 3 is provided on the top surface of the main gas plate 1, the valve heads of the first solenoid valve 41, the second solenoid valve 42, the third solenoid valve 43, the fourth solenoid valve 51, the fifth solenoid valve 52, the sixth solenoid valve 53, and the auxiliary solenoid valves 8 are all located at positions above the top surface of the main gas plate 1 (i.e., the top surface of the main gas plate 1), and the valve seats of the first solenoid valve 41, the second solenoid valve 42, the third solenoid valve 43, the fourth solenoid valve 51, the fifth solenoid valve 52, and the sixth solenoid valve 53 are all located at positions below the top surface of the main gas plate 1.

It can be understood that the inlet end and the outlet end of each electromagnetic valve on the main gas board 1 are arranged opposite to each other and are positioned on two sides of the valve seat thereof, the inlet end and the outlet end of the pressure proportional valve 3 are positioned on the same side and are both positioned on the bottom surface of the valve seat thereof, and after the pressure proportional valve 3 and each electromagnetic valve on the main gas board 1 are arranged in the above manner, the air circulation of the main gas circuit is positioned below the top surface of the main gas board 1. In addition, the positions of the air path connections are connected in a sealing manner through sealing rings so as to ensure the sealing performance. Therefore, the system structurally realizes a zero-leakage test mode, namely water leakage test, on the basis of detecting leakage by using a mode of acquiring air pressure difference within a certain time by using a sensor in the prior art, and during the test, the system is vertically placed according to the figure 1, the main air circuit board 1 is completely immersed in water (the water is just immersed in the top surface of the main air circuit board 1), so that the leakage grade of the main air circuit part in the pneumatic test system can be directly judged, zero leakage is realized, and the leakage grade of the main air circuit is increased to the highest grade.

For the parts needing to be electrified, such as the pressure proportional valve 3 on the main gas board 1, the valve heads of the electromagnetic valves and the valve heads of the auxiliary electromagnetic valves 8 are all positioned above the top surface of the main gas board 1, so that the electric parts are not influenced when the main gas board 1 is immersed in water for testing. Since the leakage grade of the auxiliary air path is not required, the positions of the valve seats of the auxiliary air path plate 6 and the auxiliary electromagnetic valves 8 are not required, and in order to make the structure more compact, the top surface of the auxiliary air path plate 6 is basically flush with the top surface of the main air path plate 1, and each auxiliary electromagnetic valve 8 is arranged on the top surface of the auxiliary air path plate 6, so that the auxiliary air path part can be detected when the leakage grade of the main air path part is tested. The main air pressure regulating valve 2 and the auxiliary pressure regulating valve 7 are preferably manual pressure regulating valves, so that the structure is simplified and the cost is reduced.

It should be noted that the directions of the top and bottom surfaces mentioned herein refer to the vertical direction of the system as shown in fig. 1 and 5; in actual use, the system can be vertically placed or placed in other directions according to needs.

Further, in order to prevent foreign impurities and dust from entering the system, a forward filter 21 is further disposed at the inlet end of the main air pressure regulating valve 2, and a first reverse filter 431 and a second reverse filter 531 are disposed at the outlet end of the third solenoid valve 43 and the outlet end of the sixth solenoid valve 53, respectively, so as to perform a filtering function. Since each filter is also an air flow-through element, the forward filter 21, the first backward filter 431, and the second backward filter 531 are all located below the top surface of the main air plate 1 (generally, the interface position of each filter may be located below the top surface of the main air plate 1) so as to facilitate the water leak test. The specific structure of the forward filter 21 and each backward filter is the prior art, and will not be described in detail herein. The normal filter 21 and the main air pressure regulating valve 2 can be integrated together to directly adopt the main air filtering pressure regulating valve, and the main air filtering pressure regulating valve also has the existing structure.

In order to facilitate accurate control of the pressure output of the pressure proportional valve 3 through closed-loop control, as shown in fig. 1 to 3, a total pressure sensor 22, a first pressure sensor 432 and a second pressure sensor 532 are further arranged on the top surface of the main gas circuit board 1, and the total pressure sensor 22 is arranged corresponding to a corresponding gas circuit on the main gas circuit board 1, which is close to the outlet end of the total air pressure regulating valve 2, so as to collect the pressure at the outlet end of the total air pressure regulating valve 2; the first pressure sensor 432 is arranged corresponding to a corresponding air path on the main air circuit board 1 near the outlet end of the third electromagnetic valve 43, so as to collect the pressure at the outlet end of the third electromagnetic valve 43; the second pressure sensor 532 is disposed corresponding to a corresponding air path on the main air circuit board 1 near the outlet end of the sixth solenoid valve 53, so as to collect the pressure at the outlet end of the sixth solenoid valve 53. The structure of the sensors and the closed loop control process are also prior art. All the sensors are arranged on the top surface of the main gas circuit board 1, and the electric plugs of the sensors cannot be influenced when the water leakage test is carried out.

Generally, a main pressure gauge 23 and an auxiliary pressure gauge 71 are respectively arranged on the main gas circuit board 1 and the auxiliary gas circuit board 6, the main pressure gauge 23 is arranged corresponding to a corresponding gas circuit on the main gas circuit board 1 which is communicated with the outlet end of the main air pressure regulating valve 2, and the auxiliary pressure gauge 71 is arranged corresponding to a corresponding gas circuit on the auxiliary gas circuit board 6 which is communicated with the outlet end of the auxiliary pressure regulating valve 7. So that an operator can directly observe the outlet end pressure of the main air pressure regulating valve 2 and the outlet end pressure of the auxiliary pressure regulating valve 7 through the main pressure gauge 23 and the auxiliary pressure gauge 71.

Further, in order to facilitate the connection of the electromagnetic valves on the main air board 1 by the air passages between the inverted filters, and at the same time, to facilitate the processing and installation and make the structure more compact, as shown in fig. 1 to 3 and fig. 6 to 10, the main air board 1 includes a first clamping plate 11 and a second clamping plate 12 (the top surfaces of the first clamping plate 11 and the second clamping plate 12 are flush), a first air passage 111 and a second air passage 112 which are independent of each other are formed in the first clamping plate 11 (the left end of the first air passage 111 and the right end of the second air passage 112 in fig. 7 are both in a closed state), and a first port 113, a second port 114, and a third port 115 which are communicated with the first air passage 111, and a fourth port 116, a fifth port 117, and a sixth port 118 which are communicated with the second air passage 112 are formed on the first side of the first clamping plate 11.

The second clamping plate 12 is provided with a first channel 121 and a fourth channel 124 communicating the first side and the top surface thereof, and a second channel 122, a third channel 123, a fifth channel 125 and a sixth channel 126 penetrating through both sides thereof (i.e., the first side and the opposite second side of the second clamping plate 12, the top surface and the bottom surface of the second clamping plate 12 are adjacent to the first side and the second side thereof, and the first clamping plate 11 and the second clamping plate 12 are rectangular plate bodies), and the first interface 113, the second interface 114, the third interface 115, the fourth interface 116, the fifth interface 117 and the sixth interface 118 are respectively arranged opposite to the first channel 121, the second channel 122, the third channel 123, the fourth channel 124, the fifth channel 125 and the sixth channel 126. The valve seats of the first solenoid valve 41, the second solenoid valve 42, the third solenoid valve 43, the fourth solenoid valve 51, the fifth solenoid valve 52 and the sixth solenoid valve 53 are all clamped between the first side of the first clamping plate 11 and the first side of the second clamping plate 12, and the first clamping plate 11 and the second clamping plate 12 are fixedly connected through a plurality of first fasteners 14 (such as bolts) so as to fix the six solenoid valves on the main circuit board 1.

The ports of the first and fourth passages 121 and 124 near the top surface of the second clamping plate 12 form a first branch 1211 and a second branch 1241, respectively, the inlet and outlet ends of the first solenoid valve 41 are hermetically connected to the first passage 121 and the first port 113, respectively, the inlet and outlet ends of the second solenoid valve 42 are hermetically connected to the second port 114 and the second passage 122, respectively, and the inlet and outlet ends of the third solenoid valve 43 are hermetically connected to the third port 115 and the third passage 123, respectively. The inlet and outlet ends of the fourth solenoid valve 51 are respectively connected with the fourth passage 124 and the fourth port 116 in a sealing manner, the inlet and outlet ends of the fifth solenoid valve 52 are respectively connected with the fifth port 117 and the fifth passage 125 in a sealing manner, and the inlet and outlet ends of the sixth solenoid valve 53 are respectively connected with the sixth port 118 and the sixth passage 126 in a sealing manner. The first reverse filter 431 and the second reverse filter 531 are fixed (for example, bolted) to the second side of the second clamping plate 12 at positions respectively facing the third channel 123 and the sixth channel 126, and ends of the second channel 122 and the fifth channel 125 close to the second side of the second clamping plate 12 are both communicated with the outside atmosphere.

In order to facilitate the air path connection between the main air pressure regulating valve 2 and the pressure proportional valve 3 on the main air path plate 1 and the auxiliary pressure regulating valve 7 on the auxiliary air path plate 6, and to facilitate the processing and installation and to make the structure more compact, as shown in fig. 3 and fig. 8 to fig. 10, an L-shaped plate body 13 is integrally formed on the second side of the second clamping plate 12 (the surface of the L-shaped plate body 13 and the surface of the second clamping plate 12 are in the same plane), the L-shaped plate body 13 includes a first plate body 131 whose surface is perpendicular to the side surface of the second clamping plate 12 and a second plate body 132 whose surface is parallel to and spaced from the side surface of the second clamping plate 12, and the side of the second plate body 132 away from the second clamping plate 12 is used as the outer side surface thereof.

An L-shaped third air passage 133 is formed in the L-shaped plate 13 along the L-shaped cross section thereof (the rightmost end of the third air passage 133 is in a closed state in fig. 10), a fourth air passage 134 communicating with the third air passage 133 and penetrating through the outer side surface of the second plate 132 is further formed in the second plate 132 and away from the first plate 131, and a portion of the third air passage 133 located in the first plate 131 extends to the outer side surface of the second plate 132 to form a fifth air passage 135 penetrating through the outer side surface of the second plate 132. The main air pressure regulating valve 2 and the auxiliary pressure regulating valve 7 are both fixedly arranged on the outer side surface of the second plate body 132, and the outlet end of the main air pressure regulating valve 2 and the inlet end of the auxiliary pressure regulating valve 7 are respectively arranged right opposite to the fourth air path 134 and the fifth air path 135. A sixth air passage 136 is formed in the second clamping plate 12 at a position corresponding to the end of the third air passage 133, the sixth air passage 136 is communicated with the third air passage 133 and penetrates through the top surface of the second clamping plate 12, the pressure proportional valve 3 is fixedly arranged (for example, connected by a bolt) on the top surface of the second clamping plate 12, and the inlet end of the pressure proportional valve 3 is communicated with the sixth air passage 136. The outlet end of the pressure proportional valve 3 is communicated with the first branch 1211 and the second branch 1241, and the output pressure of the pressure proportional valve 3 can be divided into two paths to correspond to the common set solenoid valve 4 and the spring set solenoid valve 5, respectively.

To facilitate the collection of pressure levels at a given location by total pressure sensor 22, main pressure gauge 23, first pressure sensor 432, and second pressure sensor 532, as shown in figures 3 and 8-10, a seventh air passage 137 communicating with the third air passage 133 and penetrating through the top surface of the second plate 132 is further formed in the second plate 132 at a position close to the fourth air passage 134, an eighth air passage 138 communicating with the third air passage 133 and penetrating through the top surface of the L-shaped plate body 13 is further provided in the L-shaped plate body 13, a ninth air passage 139 and a tenth air passage 1310 which are respectively communicated with the third channel 123 and the sixth channel 126 and penetrate through the top surface of the second clamp plate 12 are further formed in the second clamp plate 12, and the total pressure sensor 22, the main pressure gauge 23, the first pressure sensor 432 and the second pressure sensor 532 are respectively arranged right opposite to the seventh air passage 137, the eighth air passage 138, the ninth air passage 139 and the tenth air passage 1310 (the main pressure gauge 23 is fixedly arranged on the top surface of the L-shaped plate body 13).

In order to further facilitate the pressure regulation of the pressure proportional valve 3, as shown in fig. 10, an eleventh air channel 1311 is further provided in the second clamping plate 12, one end of which penetrates through the outer side surface of the second clamping plate and is communicated with the outside atmosphere, and the other end of which penetrates through the top surface of the second clamping plate and faces the air outlet of the pressure proportional valve 3, so as to facilitate the discharge of air when the pressure proportional valve 3 regulates the pressure.

Further, in order to facilitate the air path connection between the auxiliary pressure regulating valve 7 and each auxiliary solenoid valve 8 on the auxiliary air path plate 6, and to facilitate the acquisition of the pressure at a designated position by the auxiliary pressure gauge 71, and to facilitate the connection and fixation between the main air path plate 1 and the auxiliary air path plate 6 and to make the structure more compact, as shown in fig. 3, 11 and 12, the auxiliary air path plate 6 is an L-shaped air path plate, and includes a first auxiliary plate 61 and a second auxiliary plate 62 parallel to the plate surfaces of the first plate body 131 and the second plate body 132, respectively, and one side of the second auxiliary plate 62 facing the second plate body 132 is an inner side surface thereof.

An L-shaped first auxiliary air passage 63 is provided in the L-shaped air passage plate along the L-shaped cross section thereof (the rightmost end of the first auxiliary air passage 63 in fig. 12 is in a closed state), a second auxiliary air channel 64 and a third auxiliary air channel 65 which are communicated with the first auxiliary air channel 63 and respectively penetrate through the inner side surface of the second auxiliary plate 62 and the top surface of the second auxiliary plate 62 are further formed in the second auxiliary plate 62, the auxiliary pressure regulating valve 7 is clamped between the second plate body 132 and the second auxiliary plate 62, the outlet end of the auxiliary pressure regulating valve 7 is arranged opposite to the second auxiliary air channel 64, the second plate body 132 and the second auxiliary plate 62 are fixedly connected (for example, bolted connection is adopted so as to clamp and fix the auxiliary pressure regulating valve 7 between the second plate body 132 and the second auxiliary plate 62) through a plurality of second fasteners 15, and the auxiliary pressure gauge 71 is arranged opposite to the third auxiliary air channel 65 (the auxiliary pressure gauge 71 is fixedly arranged on the top surface of the second auxiliary plate 62). A plurality of fourth auxiliary air paths 66 which are communicated with the first auxiliary air path 63 and penetrate through the top surface of the auxiliary air path plate 6 are further formed in the L-shaped air path plate, each auxiliary electromagnetic valve 8 is fixedly arranged (for example, connected by bolts) on the top surface of the first auxiliary plate 61, and the inlet of each auxiliary electromagnetic valve 8 is arranged opposite to the corresponding fourth auxiliary air path 66.

Further, in the present embodiment, the six electromagnetic valves on the main air channel plate 1 preferably adopt external pilot electromagnetic valves, and therefore, external air supply is required all the time. As shown in fig. 3 and 12, a portion of the first auxiliary air passage 63 located in the first auxiliary plate 61 extends toward the outer side surface of the second auxiliary plate 62 to form a fifth auxiliary air passage 67 penetrating the outer side surface of the second auxiliary plate 62, and the fifth auxiliary air passage 67 is communicated with pilot ports of the first solenoid valve 41, the second solenoid valve 42, the third solenoid valve 43, the fourth solenoid valve 51, the fifth solenoid valve 52, and the sixth solenoid valve 53 through an air pipe 671. The six electromagnetic valves are supplied with air through air pipes 671, and the air from the outside is controlled by closing the electromagnetic heads of the electromagnetic valves, namely, the air is guided firstly; the pilot air is used for controlling the opening and closing of the main valve port, and the structure of the external pilot electromagnetic valve is also the prior art; the adoption of the external pilot type electromagnetic valve can avoid the influence of the main air path, and the electromagnetic valve can still be opened and closed when the main air path is in no wind or the wind pressure of the main air path is low. Of course, the six solenoid valves on the main air board 1 may be of other types as needed, and this embodiment is only for illustration.

Further, the type of the auxiliary electromagnetic valve 8 is specifically selected according to the type of the actuator 93, for example, as shown in fig. 13 and 14 in the present embodiment, when the actuator 93 is an air cylinder, each auxiliary electromagnetic valve 8 is a two-position five-way electromagnetic valve, and sixth auxiliary air channels 68, one end of which penetrates through the top surface of the auxiliary air channel plate 6 and the other end of which penetrates through the side surface or the bottom surface of the auxiliary air channel plate 6 and communicates with the outside atmosphere, are further formed in the L-shaped air channel plate and located on both sides of each fourth auxiliary air channel 66. The inlet P of the two-position five-way electromagnetic valve is communicated with the outlet end of the auxiliary pressure regulating valve 7, the two exhaust ports R of the two-position five-way electromagnetic valve are respectively arranged opposite to the corresponding sixth auxiliary air channels 68 so as to be communicated with the external atmosphere, the two working ports a of the two-position five-way electromagnetic valve are respectively communicated with the two interfaces of the cylinder, and the two working ports a of the two-position five-way electromagnetic valve can drive the corresponding cylinder to work by powering on and powering off the auxiliary electromagnetic valve 8. The two-position five-way electromagnetic valve is provided with five interfaces which are respectively an inlet P, two exhaust ports R and two working ports A, and the specific structure and the working process are the prior art.

Further preferably, as shown in fig. 13, a choke 31 is provided at the outlet end of the pressure proportional valve 3 to adjust the flow rate. A first muffler 421 and a second muffler 521 are provided at the outlet end of the second solenoid valve 42 and the outlet end of the fifth solenoid valve 52, respectively, to reduce noise.

In conclusion, the pneumatic test system in the embodiment effectively integrates the main air path part and the auxiliary air path part of the pneumatic test system on a physical space structure through an integrated design, so that the structure is more compact, the effective utilization rate of the space is greatly improved, the assembly and maintenance manufacturability is stronger, and the batch consistency is effectively improved.

The main gas circuit part of the pneumatic testing system controls the pressure of two paths of the common cylinder 91 and the spring cylinder 92 through a pressure proportional valve 3 and two groups of control valves (namely a common group electromagnetic valve 4 and a spring group electromagnetic valve 5) integrated on the main gas circuit board 1. The auxiliary air path part of the pneumatic test system is supplied by the same path of total air with the main air path, the auxiliary electromagnetic valve 8 is integrated on the auxiliary air path plate 6 after two-stage pressure regulation, and the auxiliary electromagnetic valve 8 on the auxiliary air path plate 6 can realize the control of an auxiliary mechanism (namely an actuating mechanism 93) of the test equipment; meanwhile, along with the improvement of the automation degree of the subsequent actuating mechanism 93, the control of the corresponding actuating mechanism 93 can be satisfied by increasing or reducing the number of the auxiliary electromagnetic valves 8, and the expansibility is strong. The whole system can realize the universal application of a set of air path testing system by completely changing the number of the auxiliary electromagnetic valves 8 on the auxiliary air path plate 6 for the test equipment of the current brake clamp unit, brake cylinder and tread brake unit.

Meanwhile, all electrical elements and electrical connectors (including the valve heads of six electromagnetic valves on the main gas board 1, the valve heads of the pressure proportional valve 3, the electrical plugs of the sensors and the valve heads of the auxiliary electromagnetic valves 8) are designed to be on the same side (specifically, the upper side of the top surface of the main gas board 1), and the related execution elements for gas path circulation (including the main gas board 1, the valve seats of the six electromagnetic valves on the main gas board 1 and the filters) are designed to be on the opposite side (specifically, the lower side of the top surface of the main gas board 1).

In addition, the integrated scheme has an obvious effect of improving the test consistency of batch application of test equipment, and because the gas circuit connection of the main gas circuit part and the auxiliary gas circuit part does not adopt a pipeline element for connection, the structure is completely consistent, and for the same tested piece, the test data on different test equipment has good consistency, so that a good batch quality control platform is provided for the tested product.

Therefore, the pneumatic testing system in the embodiment mainly has the following advantages: (1) the assembly and maintenance difficulty is reduced, a mature process can be formed, and the batch consistency is ensured. (2) The structure is compacter firm, and the vibration resistance is stronger, and the fault rate reduces. (3) The method is suitable for the application of the universal structure of the pneumatic test system of the basic brake product, has wider application range and strong expandability. (4) The zero-leakage test mode and the zero-leakage test are structurally realized, the leakage grade of the pneumatic test system is improved to the highest level (mainly aiming at the main gas circuit part), and the precision is higher. (5) The whole structure is simplified, the occupied area of the equipment is reduced, and the resources are saved.

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 (14)

1. A pneumatic test system for basic brake products of railway vehicles is characterized by comprising a main gas board;

the main gas circuit board is provided with a main air pressure regulating valve, a pressure proportional valve, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve and a sixth electromagnetic valve which are two-position two-way electromagnetic valves; the outlet end of the main air pressure regulating valve is communicated with the inlet end of the pressure proportional valve through a corresponding air passage arranged in the main air circuit board, and the outlet end of the pressure proportional valve is communicated with a first branch port and a second branch port which are arranged on the main air circuit board;

the first branch port is communicated with the inlet end of the first electromagnetic valve through a corresponding air path arranged on the main air circuit board, the outlet end of the first electromagnetic valve, the inlet end of the second electromagnetic valve and the inlet end of the third electromagnetic valve are communicated with each other through a corresponding air path arranged on the main air circuit board, the outlet end of the second electromagnetic valve is communicated with the outside atmosphere, and the outlet end of the third electromagnetic valve is used for connecting the inlet end of a common cylinder; the second branch port is communicated with the inlet end of the fourth electromagnetic valve through a corresponding air path arranged on the main air path plate, the outlet end of the fourth electromagnetic valve, the inlet end of the fifth electromagnetic valve and the inlet end of the sixth electromagnetic valve are communicated with each other through a corresponding air path arranged on the main air path plate, the outlet end of the fifth electromagnetic valve is communicated with the outside atmosphere, and the outlet end of the sixth electromagnetic valve is used for connecting the inlet end of the spring cylinder.

2. The railway vehicle foundation brake product pneumatic test system of claim 1,

the pneumatic test system for the basic brake product of the railway vehicle further comprises an auxiliary air circuit board fixedly connected with the main air circuit board; the auxiliary air circuit board is provided with an auxiliary pressure regulating valve and a plurality of auxiliary electromagnetic valves, the inlet end of the auxiliary pressure regulating valve is communicated with the outlet end of the main air pressure regulating valve through corresponding air circuits arranged on the main air circuit board, the outlet end of the auxiliary pressure regulating valve is communicated with the inlets of the auxiliary electromagnetic valves through corresponding air circuits arranged on the auxiliary air circuit board, and each auxiliary electromagnetic valve is respectively used for being connected with an actuating mechanism.

3. A railway vehicle foundation brake product pneumatic test system as in claim 2,

the pressure proportional valve is arranged on the top surface of the main gas circuit board, valve heads of the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve, the sixth electromagnetic valve and the auxiliary electromagnetic valves are all located at positions above the top surface of the main gas circuit board, and valve seats of the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are all located at positions below the top surface of the main gas circuit board.

4. A railway vehicle foundation brake product pneumatic test system as in claim 3,

the inlet end of the main air pressure regulating valve is further provided with a forward filter, the outlet end of the third electromagnetic valve and the outlet end of the sixth electromagnetic valve are respectively provided with a first reverse filter and a second reverse filter, and the forward filter, the first reverse filter and the second reverse filter are all located at positions below the top surface of the main air circuit board.

5. A railway vehicle foundation brake product pneumatic test system as in claim 4,

the top surface of the main air circuit board is further provided with a total pressure sensor, a first pressure sensor and a second pressure sensor, the total pressure sensor corresponds to a corresponding air circuit arrangement on the main air circuit board close to the outlet end of the total air pressure regulating valve, the first pressure sensor corresponds to a corresponding air circuit arrangement on the main air circuit board close to the outlet end of the third electromagnetic valve, and the second pressure sensor corresponds to a corresponding air circuit arrangement on the main air circuit board close to the outlet end of the sixth electromagnetic valve.

6. A railway vehicle foundation brake product pneumatic test system as in claim 5,

the main air circuit board and the auxiliary air circuit board are respectively provided with a main pressure gauge and an auxiliary pressure gauge, the main pressure gauge is arranged corresponding to a corresponding air circuit on the main air circuit board and communicated with the outlet end of the main air pressure regulating valve, and the auxiliary pressure gauge is arranged corresponding to a corresponding air circuit on the auxiliary air circuit board and communicated with the outlet end of the auxiliary pressure regulating valve.

7. A railway vehicle foundation brake product pneumatic test system as in claim 6, wherein the main air panel comprises a first clamp plate and a second clamp plate;

a first air path and a second air path which are mutually independent are arranged in the first clamping plate, and a first interface, a second interface and a third interface which are communicated with the first air path and a fourth interface, a fifth interface and a sixth interface which are communicated with the second air path are arranged on the first side of the first clamping plate; the second splint is provided with a first channel and a fourth channel which are communicated with a first side and a top surface of the second splint, and a second channel, a third channel, a fifth channel and a sixth channel which run through two sides of the second splint, and the first interface, the second interface, the third interface, the fourth interface, the fifth interface and the sixth interface are respectively arranged opposite to the first channel, the second channel, the third channel, the fourth channel, the fifth channel and the sixth channel; valve seats of the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are all clamped between the first side of the first clamping plate and the first side of the second clamping plate, and the first clamping plate and the second clamping plate are fixedly connected through a plurality of first fasteners;

ports, close to the top surface of the second clamping plate, in the first channel and the fourth channel respectively form the first branch port and the second branch port, an inlet end and an outlet end of the first electromagnetic valve are respectively in sealed connection with the first channel and the first interface, an inlet end and an outlet end of the second electromagnetic valve are respectively in sealed connection with the second interface and the second channel, and an inlet end and an outlet end of the third electromagnetic valve are respectively in sealed connection with the third interface and the third channel; an inlet end and an outlet end of the fourth electromagnetic valve are respectively in sealing connection with the fourth channel and the fourth port, an inlet end and an outlet end of the fifth electromagnetic valve are respectively in sealing connection with the fifth port and the fifth channel, and an inlet end and an outlet end of the sixth electromagnetic valve are respectively in sealing connection with the sixth port and the sixth channel; the first reverse filter and the second reverse filter are fixedly arranged on the second side of the second clamping plate and are respectively opposite to the third channel and the sixth channel, and the end parts, close to the second side of the second clamping plate, of the second channel and the fifth channel are communicated with the outside atmosphere.

8. A railway vehicle foundation brake product pneumatic test system as in claim 7,

the second side of the second clamping plate is integrally formed with an L-shaped plate body, the L-shaped plate body comprises a first plate body with a plate surface vertical to the side surface of the second clamping plate and a second plate body with a plate surface parallel to and spaced from the side surface of the second clamping plate, and one side of the second plate body, which is far away from the second clamping plate, is used as the outer side surface of the second plate body;

an L-shaped third air path is formed in the L-shaped plate body along the L-shaped section of the L-shaped plate body, a fourth air path which is communicated with the third air path and penetrates through the outer side surface of the second plate body is further formed in the second plate body and is far away from the first plate body, and the part of the third air path in the first plate body extends to the outer side surface of the second plate body to form a fifth air path which penetrates through the outer side surface of the second plate body; the main air pressure regulating valve and the auxiliary pressure regulating valve are fixedly arranged on the outer side surface of the second plate body, and the outlet end of the main air pressure regulating valve and the inlet end of the auxiliary pressure regulating valve are respectively arranged over against the fourth air path and the fifth air path;

and a sixth air path communicated with the third air path and penetrating through the top surface of the second clamping plate is arranged in the second clamping plate at a position corresponding to the end part of the third air path, the pressure proportional valve is fixedly arranged on the top surface of the second clamping plate, and the inlet end of the pressure proportional valve is communicated with the sixth air path.

9. A railway vehicle foundation brake product pneumatic test system as in claim 8,

the position in the second plate body, which is close to the fourth gas circuit, is further provided with a seventh gas circuit communicated with the third gas circuit and penetrating through the top surface of the second plate body, the L-shaped plate body is further provided with an eighth gas circuit communicated with the third gas circuit and penetrating through the top surface of the L-shaped plate body, the second clamping plate is further provided with a ninth gas circuit and a tenth gas circuit communicated with the third channel and the sixth channel respectively and penetrating through the top surface of the second clamping plate, and the total pressure sensor, the main pressure gauge, the first pressure sensor and the second pressure sensor are arranged right opposite to the seventh gas circuit, the eighth gas circuit, the ninth gas circuit and the tenth gas circuit respectively.

10. A railway vehicle foundation brake product pneumatic test system as in claim 8,

and an eleventh air path with one end penetrating through the outer side surface of the second clamping plate and communicated with the outside atmosphere and the other end penetrating through the top surface of the second clamping plate and facing the air outlet of the pressure proportional valve is further arranged in the second clamping plate.

11. A railway vehicle foundation brake product pneumatic test system as in claim 8,

the auxiliary air channel plate is an L-shaped air channel plate and comprises a first auxiliary plate and a second auxiliary plate which are parallel to the plate surfaces of the first plate body and the second plate body respectively, and one side of the second auxiliary plate facing the second plate body is used as the inner side surface of the second auxiliary plate;

the L-shaped gas circuit board is internally provided with an L-shaped first auxiliary gas circuit along the L-shaped cross section thereof, the second auxiliary board is also internally provided with a second auxiliary gas circuit and a third auxiliary gas circuit which are communicated with the first auxiliary gas circuit and respectively penetrate through the inner side surface of the second auxiliary board and the top surface of the second auxiliary board, the auxiliary pressure regulating valve is clamped between the second board body and the second auxiliary board, the outlet end of the auxiliary pressure regulating valve is arranged opposite to the second auxiliary gas circuit, the second board body and the second auxiliary board are fixedly connected through a plurality of second fasteners, and the auxiliary pressure gauge is arranged opposite to the third auxiliary gas circuit; and a plurality of fourth auxiliary gas paths which are communicated with the first auxiliary gas paths and penetrate through the top surfaces of the auxiliary gas path plates are further formed in the L-shaped gas path plates, each auxiliary electromagnetic valve is fixedly arranged on the top surface of the first auxiliary plate, and the inlet of each auxiliary electromagnetic valve is arranged opposite to the corresponding fourth auxiliary gas path.

12. The railway vehicle foundation brake product pneumatic test system of claim 11,

the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are all external pilot electromagnetic valves, a part of the first auxiliary gas path, which is positioned in the first auxiliary plate, extends to the outer side surface of the second auxiliary plate to form a fifth auxiliary gas path penetrating through the outer side surface of the second auxiliary plate, and the fifth auxiliary gas path is communicated with pilot ports of the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve through gas pipes.

13. The railway vehicle foundation brake product pneumatic test system of claim 11,

the executing mechanism is an air cylinder, each auxiliary electromagnetic valve is a two-position five-way electromagnetic valve, and sixth auxiliary air channels with one ends penetrating through the top surface of the auxiliary air channel plate and the other ends penetrating through the side surface or the bottom surface of the auxiliary air channel plate and communicated with the external atmosphere are further formed in the L-shaped air channel plate and positioned on two sides of each fourth auxiliary air channel; and the inlet of the two-position five-way electromagnetic valve is communicated with the outlet end of the auxiliary pressure regulating valve, two air outlets of the two-position five-way electromagnetic valve are respectively arranged opposite to the corresponding sixth auxiliary air passage, and two working ports of the two-position five-way electromagnetic valve are respectively communicated with two interfaces of the air cylinder.

14. The railway vehicle foundation brake product pneumatic test system of claim 1,

a shrinkage plug is arranged at the outlet end of the pressure proportional valve;

and a first silencer and a second silencer are respectively arranged at the outlet end of the second electromagnetic valve and the outlet end of the fifth electromagnetic valve.

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