Empty and load adjusting device with electromagnetic valve switch for railway vehicle

Abstract

The utility model discloses a railway vehicle empty and load adjusting device with an electromagnetic valve switch. The railway vehicle empty and load adjusting device comprises a first cavity, a second cavity, a third cavity, a fourth cavity and a fifth cavity, wherein the first cavity, the second cavity, the third cavity, the fourth cavity and the fifth cavity are sequentially composed of a valve deck, an upper middle body, a diaphragm plate, a lower middle body, a pressure limiting piston and a valve body. Wherein the cavity I is communicated with the empty electromagnetic valve and the loaded electromagnetic valve, and is provided with an empty sandwich valve and a loaded sandwich valve to control opening and closing of channel ports of the empty electromagnetic valve and the loaded electromagnetic valve; the fifth cavity is communicated with an auxiliary air cylinder and a brake cylinder through an inflation blind pass, and an inflation blind pass branch is communicated with the fourth cavity, a loaded vehicle electromagnetic valve and an empty vehicle electromagnetic valve; according to the pneumatic brake cylinder, the electromagnetic valve switch is used for controlling different air passages, springs with different pretightening forces are arranged, and the opening time of a valve port is controlled, so that the effect of controlling the braking force of the brake cylinder according to different vehicle loads is achieved.

Description

Technical Field

[0001] The utility model relates to the field of railway vehicle parts, in particular to an empty and loaded vehicle adjusting device for railway vehicles with a solenoid valve switch. Background Art

[0002] Different loads of railway vehicles require different amounts of braking force. Currently, the empty and loaded vehicle adjustment devices of railway vehicles are purely mechanical, which has the disadvantages of slow adjustment response speed, and the mechanical contact parts of the load weighing device are inaccurate or even fail to adjust due to wear.

[0003] The patent with publication number CN202111593753.4 discloses a device for stepless automatic adjustment of the empty and loaded braking force of railway freight cars, including a regulating valve body, the interior of the regulating valve body is divided into an independent first cavity, a second cavity and a third cavity, a first piston assembly for measuring the load is provided in the first cavity, a rubber diaphragm assembly for realizing the transmission of the pressure air force is provided in the second cavity, a second piston assembly is provided in the third cavity, the upper part of the third cavity is connected to the brake cylinder, and the lower part is connected to the control valve. According to the size of the load, the pressure air in the auxiliary air cylinder enters the lower part of the third cavity through the control valve and is transmitted to the brake cylinder, and is also transmitted to the upper part of the third cavity and the bottom of the first cavity to drive the two groups of piston assemblies to move accordingly, so as to realize stepless automatic adjustment of the braking force. The patent monitors the change of vehicle load through a set of simple weighing device and adjusts the braking force; the layout of the vehicle bottom space is optimized, but it is still a purely mechanical, contact weighing device, and there is still the problem of inaccurate adjustment or even failure due to long-term contact and wear between the weighing device and the vehicle body. Utility Model Content

[0004] The utility model provides an empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch to solve the problem that the mechanical contact part of the existing load weighing device is inaccurately adjusted or even fails after being worn.

[0005] The technical solution adopted by the utility model is:

[0006] An empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch is characterized in that it comprises a valve cover, an upper intermediate body, a diaphragm, a lower intermediate body, a limit piston and a valve body which are arranged in sequence, wherein the valve cover and the upper intermediate body form a cavity one, the upper intermediate body and the diaphragm form a cavity two, the diaphragm and the lower intermediate body form a cavity three, the lower intermediate body and the limit piston form a cavity four, and the limit piston and the valve body form a cavity five;

[0007] The cavity one is connected to the cavity two, the cavity three is connected to the atmosphere, the cavity five is connected to the auxiliary air cylinder and the brake cylinder through the inflation dark channel, the inflation dark channel between the cavity five and the brake cylinder is provided with an inflation dark channel branch, the inflation dark channel branch is respectively connected to the cavity four, the heavy vehicle solenoid valve, and the empty vehicle solenoid valve, and the cavity five is provided with a brake cylinder inflation valve port;

[0008] The cavity one is connected with the empty vehicle solenoid valve and the loaded vehicle solenoid valve, and the cavity one is provided with an empty vehicle sandwich valve and a loaded vehicle sandwich valve for respectively controlling the opening and closing of the cavity one and the channel openings of the empty vehicle solenoid valve and the loaded vehicle solenoid valve;

[0009] The diaphragm and the pressure-limiting piston are connected by a push rod and can drive the piston to reciprocate. The pressure-limiting piston is located on one side of the brake cylinder inflation valve port and is connected to an inflation sandwich valve. The inflation sandwich valve controls the opening and closing of the brake cylinder inflation valve port under the drive of the reciprocating motion of the piston. Furthermore, the inflation sandwich valve and the pressure-limiting piston are provided with an inflation sandwich valve spring to increase the pressure when the inflation sandwich valve closes the brake cylinder inflation valve port to prevent air leakage.

[0010] Furthermore, a spring 1 is provided between the inflation sandwich valve and the pressure-limiting piston.

[0011] Furthermore, an automatic reset device is provided between the pressure-limiting piston and the valve body, which provides a certain resistance to the downward movement of the pressure-limiting piston and enables the pressure-limiting piston to reset automatically.

[0012] Furthermore, the automatic reset device is spring 2.

[0013] Furthermore, the empty vehicle sandwich valve includes an empty vehicle sandwich valve and a spring three, one end of the spring three is connected to the inner side of the valve cover, and the other end is connected to the empty vehicle sandwich valve; the heavy vehicle sandwich valve includes a heavy vehicle sandwich valve and a spring four, the heavy vehicle sandwich valve spring is connected to the inner side of the valve cover, and the other end is connected to the heavy vehicle sandwich valve valve, and the spring force of the empty vehicle sandwich valve spring three and the heavy vehicle sandwich valve spring four is designed according to the specified empty vehicle brake cylinder pressure and the heavy vehicle brake cylinder pressure.

[0014] Furthermore, the cavity 1 is connected to the heavy vehicle solenoid valve through a heavy vehicle secret passage.

[0015] Furthermore, the second cavity is connected to the empty vehicle solenoid valve through an empty vehicle secret passage.

[0016] Furthermore, the valve cover, the upper intermediate body, the lower intermediate body and the valve body are connected by bolts.

[0017] Furthermore, a sealing ring is provided between the valve cover and the upper intermediate body.

[0018] Furthermore, the auxiliary air cylinder is connected to cavity five through a control valve or a distribution valve.

[0019] Furthermore, the loaded vehicle solenoid valve and the empty vehicle solenoid valve receive signals from a driver's cab or a vehicle control room.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model uses a solenoid valve switch to control different air passages, sets springs with different preload forces, and controls the opening time of the valve port, thereby achieving the effect of controlling the braking force of the brake cylinder according to the different vehicle loads. The solenoid valve switch is controlled by an electrical signal, responds quickly, and does not require mechanical contact with the vehicle to avoid inaccurate adjustment or even failure after wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the internal structure of an empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch;

[0023] Figure 2 It is a gas circuit diagram of an empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch;

[0024] Figure 3 The present invention is a structural schematic diagram of a loaded vehicle solenoid valve or an empty vehicle solenoid valve of an empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch.

[0025] In the figure: 1. bolt; 2. valve cover; 3. spring of empty vehicle sandwich valve; 4. spring of heavy vehicle sandwich valve; 5. heavy vehicle sandwich valve; 6. empty vehicle sandwich valve; 7. sealing ring; 8. upper intermediate body; 9. diaphragm; 10. push rod; 11. lower intermediate body; 12. valve body; 13. pressure limiting piston; 14. spring of inflation sandwich valve; 15. pressure spring; 16. inflation sandwich valve; 17. mounting seat; 18. empty vehicle solenoid valve; 19. heavy vehicle solenoid valve; 20. cavity one; 21. cavity two; 22. cavity three; 23. cavity four; 24. cavity five; 25. inflation secret passage; 26. inflation secret passage branch; 27. brake cylinder inflation valve port; 28. heavy vehicle secret passage; 29. ​​empty vehicle secret passage. DETAILED DESCRIPTION

[0026] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through a specific implementation method and in combination with its drawings. In the following description, many specific details are described to facilitate a full understanding of the present application, but the present application can also be implemented in other ways different from those described herein, so the scope of protection of the present application is not limited by the specific embodiments disclosed below. In addition, in the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly specified and specifically defined. In this application, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection, or a communication; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In this application, unless otherwise clearly specified and defined, the first feature "on" or "under" the second feature can be the first and second features directly contacting, or the first and second features indirectly contacting through an intermediate medium. In the description of this specification, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0027] Example 1

[0028] See also Figures 1 to 3The utility model provides an embodiment: an empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch, comprising a valve cover 2, an upper intermediate body 8, a diaphragm 9, a lower intermediate body 11, a pressure-limiting piston 13 and a valve body 12 connected in sequence from top to bottom, and the valve cover 2 and the upper intermediate body 8 form a cavity 1 20, the upper intermediate body 8 and the diaphragm 9 form a cavity 20, the diaphragm 9 and the lower intermediate body 11 form a cavity 3 22, the lower intermediate body 11 and the pressure-limiting piston 13 form a cavity 4 23, and the pressure-limiting piston 13 and the valve body 12 form a cavity 5 24.

[0029] The cavity 120 is connected with the empty vehicle electromagnetic valve 18 and the loaded vehicle electromagnetic valve 19, which are arranged on one side of the empty vehicle and loaded vehicle adjustment device and connected to the empty vehicle and loaded vehicle adjustment device through the mounting seat 17. An empty vehicle sandwich valve 6 for controlling the opening and closing of the channel port between the cavity 120 and the empty vehicle electromagnetic valve 18, and a loaded vehicle sandwich valve 5 for controlling the opening and closing of the channel port between the cavity 120 and the loaded vehicle electromagnetic valve 19 are arranged in the cavity 120. The valve ports of the loaded vehicle electromagnetic valve 19 and the empty vehicle electromagnetic valve 18 are in the valve port closing position when there is no electricity;

[0030] The cavity one 20 is connected with the cavity two 20, the cavity three 22 is connected with the atmosphere, the cavity five 24 is connected with the auxiliary air cylinder and the brake cylinder through the inflation channel 25, the inflation channel 25 between the cavity five 24 and the brake cylinder is provided with an inflation channel branch 26, the inflation channel branch 26 is respectively connected with the cavity four 23, the heavy vehicle solenoid valve 19, and the empty vehicle solenoid valve 18, and the cavity five 24 is provided with a brake cylinder inflation valve port 27.

[0031] The diaphragm 9 is connected to the pressure-limiting piston 13 through the push rod 10. The pressure-limiting piston 13 is located on one side of the cavity five and is connected to an air-filled sandwich valve 16. The compressed gas in the cavity two 20 and the cavity four 23 causes the diaphragm 9 and the push rod 10 to move, driving the limiting piston 13 to reciprocate. The limiting piston 13 drives the air-filled sandwich valve 16 to move. The air-filled sandwich valve 16 moves downward to cover the brake cylinder air-filled valve port 27, closing the cavity five, and vice versa. The opening and closing of the brake cylinder air-filled valve port 27 is controlled by the movement of the limiting piston 13 and the air-filled sandwich valve 16.

[0032] The inflation sandwich valve 16 and the pressure limiting piston 13 are provided with an inflation sandwich valve 16 spring 14, which increases the pressure when the inflation sandwich valve 16 closes the brake cylinder inflation valve port 27 to prevent air leakage.

[0033] A reset device is provided between the pressure limiting piston 13 and the valve body 12, which can automatically reset the limit piston 13. In this embodiment, the reset device is a spring 15, which provides a certain resistance to the downward movement of the pressure limiting piston 13 and enables the pressure limiting piston 13 to automatically reset. In other embodiments, the reset device also adopts other devices, such as a leaf spring, a magnetic attraction device, etc.

[0034] Further, the empty vehicle sandwich valve 6 includes an empty vehicle sandwich valve 6 and a spring 3 3, one end of the spring 3 3 is connected to the top of the valve cover 2, and the other end is connected to the door of the empty vehicle sandwich valve 6; the loaded vehicle sandwich valve includes a loaded vehicle sandwich valve 5 and a spring 4 4, the spring 4 4 is connected to the inner side of the top of the valve cover 2, and the other end is connected to the valve, and the empty vehicle sandwich valve 6 and the loaded vehicle sandwich valve 5 are pressed on their respective valve ports under the different preload forces of the spring 3 3 and the spring 4 4, and are in a normally closed position. The spring forces of the spring 3 3 and the spring 4 4 are designed according to the specified empty vehicle brake cylinder pressure and the heavy vehicle brake cylinder pressure.

[0035] The spring force of the sandwich valve of empty and loaded vehicles is calculated as follows:

[0036]

[0037] Where P is the brake cylinder pressure, R is the radius of the sandwich valve, and G is the weight of the sandwich valve (the sandwich valve is mostly made of rubber and is light in weight, which can be ignored compared to the pressure generated by the brake cylinder pressure).

[0038]

[0039] Taking railway freight cars as an example, according to the "Rules for Inspection and Maintenance of Freight Car Brake Devices", the brake cylinder pressure requirement for empty cars is 160±20KPa and the brake cylinder pressure requirement for heavy cars is 320±40KPa. Calculated based on the commonly used sandwich valve diameter of 50mm

[0040] Then the empty car sandwich valve 6 spring three 3 elastic force

[0041] F air = 160 × 103 Pa × 0.5 × 3.14 × 252 × 10-6 m = 157 N

[0042] Heavy vehicle sandwich valve spring force

[0043] Fweight = 320×103Pa×0.5×3.14×252×10-6m=314N

[0044] That is, the spring force of the empty vehicle sandwich valve 6 spring 3 can be set to (157±19.625)N;

[0045] The spring force of the heavy vehicle sandwich valve 4 can be set to (314±39.25)N;

[0046] Furthermore, the cavity 1 20 is connected to the heavy vehicle solenoid valve 19 through the heavy vehicle secret passage 28 , and the heavy vehicle secret passage 28 is also connected to the inflation secret passage branch 26 .

[0047] Furthermore, the cavity 20 is connected to the empty vehicle solenoid valve 18 through the empty vehicle secret passage 29 , and the empty vehicle secret passage 29 is also connected to the inflation secret passage branch 26 .

[0048] The specific principles are as follows:

[0049] When the vehicle brakes, the auxiliary air cylinder inflates the air in the air charging channel 25, the normally open brake cylinder air charging valve port 27, the cavity 5 24, and the brake cylinder in sequence through the control valve or the distribution valve, so that the brake cylinder piston rod is pushed out to brake. If the vehicle is in an empty state, the empty vehicle solenoid valve 18 receives an electrical signal to be excited, so that the empty vehicle solenoid valve 18 valve opens. At this time, while the brake cylinder is inflated, the compressed gas passes through the air charging channel branch 26, the empty vehicle solenoid valve 18, and the empty vehicle channel 29 to the bottom of the empty vehicle sandwich valve 6 valve, that is, at this time, the brake cylinder compressed air pressure is consistent with the pressure below the empty vehicle sandwich valve 6 valve (because they are connected). When the pressure below the empty vehicle sandwich valve 6 is sufficient to overcome the weight of the empty vehicle sandwich valve 6 and the elastic force of the empty vehicle sandwich valve 6 spring three 3 above it, the empty vehicle sandwich valve 6 opens, and the compressed gas enters the cavity one 20, and then enters the cavity two 20 above the diaphragm 9 through the straight-through hole; then the diaphragm 9 and the push rod 10 (the two are bonded together through a vulcanization process) are pushed downward, and under the joint action of the brake cylinder pressure in the cavity four 23 above the pressure-limiting piston 13, the air pressure in the lower cavity of the pressure-limiting piston 13 and the elastic force of the pressure spring two 15 are overcome, and the pressure-limiting piston 13 is driven downward. After moving down to a certain distance, the spring one 14 also exerts force on the inflation sandwich valve 16 to press it tighter, and the brake cylinder inflation valve port 27 is closed, and the auxiliary air cylinder stops inflating the brake cylinder.

[0050] If the vehicle is in a heavy vehicle state, the heavy vehicle solenoid valve 19 receives an electrical signal to generate excitation, so that the heavy vehicle solenoid valve 19 is opened. At this time, while the brake cylinder is inflated, the compressed gas passes through the inflation dark channel branch 26, the heavy vehicle solenoid valve 19, and the heavy vehicle dark channel 28 to the bottom of the heavy vehicle sandwich valve. When the pressure below the heavy vehicle sandwich valve is sufficient to overcome the weight of the heavy vehicle sandwich valve and the elastic force of the spring four 4 above it, the heavy vehicle sandwich valve opens, and the compressed gas enters the cavity one 20, and then enters the cavity two 20 above the diaphragm 9 through the straight air; then the diaphragm 9 and the push rod 10 (the two are bonded together through the vulcanization process) are pushed downward, and under the joint action of the brake cylinder pressure in the cavity four 23 above the pressure-limiting piston 13, the air pressure in the lower cavity of the pressure-limiting piston 13 and the elastic force of the pressure spring two 15 are overcome, and the pressure-limiting piston 13 is driven downward. After moving down to a certain distance, the spring one 14 also exerts force on the inflation sandwich valve 16 to press it tighter, and the brake cylinder inflation valve port 27 is closed, and the auxiliary air cylinder stops inflating the brake cylinder.

[0051] In this embodiment, each cavity is arranged from top to bottom, but the arrangement direction of each structure is not within the scope of the present invention. The arrangement direction of each structure can be adjusted according to the needs of the working scene without affecting the functions. For example, it can be adjusted to a horizontal arrangement.

[0052] Example 2

[0053] See also Figures 1 to 3 The utility model provides an embodiment: an empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch, comprising a valve cover 2, an upper intermediate body 8, a diaphragm 9, a lower intermediate body 11, a pressure-limiting piston 13 and a valve body 12 connected in sequence from top to bottom, and the valve cover 2 and the upper intermediate body 8 form a cavity 1 20, the upper intermediate body 8 and the diaphragm 9 form a cavity 20, the diaphragm 9 and the lower intermediate body 11 form a cavity 3 22, the lower intermediate body 11 and the pressure-limiting piston 13 form a cavity 4 23, and the pressure-limiting piston 13 and the valve body 12 form a cavity 5 24.

[0054] The cavity 1 20 is connected with the empty vehicle solenoid valve 18 and the loaded vehicle solenoid valve 19, and an empty vehicle sandwich valve 6 and a loaded vehicle sandwich valve are provided in the cavity 1 20 for respectively controlling the opening and closing of the cavity 1 20 and the channel openings of the empty vehicle solenoid valve 18 and the loaded vehicle solenoid valve 19.

[0055] The cavity one 20 is connected with the cavity two 20, the cavity three 22 is connected with the atmosphere, the cavity five 24 is connected with the auxiliary air cylinder and the brake cylinder through the inflation channel 25, the inflation channel 25 between the cavity five 24 and the brake cylinder is provided with an inflation channel branch 26, the inflation channel branch 26 is respectively connected with the cavity four 23, the heavy vehicle solenoid valve 19, and the empty vehicle solenoid valve 18, and the cavity five 24 includes a brake cylinder inflation valve port 27.

[0056] The diaphragm 9 and the pressure-limiting piston 13 are connected via a push rod 10, and the pressure-limiting piston 13 is connected to an air-filled sandwich valve 16. The air-filled sandwich valve 16 and the pressure-limiting piston 13 move the diaphragm 9 and the push rod 10 up and down through the compressed gas in the cavity 20 and the cavity 4 23. The air-filled sandwich valve 16 controls the opening and closing of the brake cylinder air valve port 27, and the pressure-limiting piston 13 can automatically reset.

[0057] Furthermore, the valve cover 2, the upper intermediate body 8, the lower intermediate body 11 and the valve body 12 are connected by bolts 1. A sealing ring 7 is provided between the valve cover 2 and the upper intermediate body 8.

[0058] Example 3

[0059] See also Figures 1 to 3 The utility model provides an embodiment: an empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch, comprising a valve cover 2, an upper intermediate body 8, a diaphragm 9, a lower intermediate body 11, a pressure-limiting piston 13 and a valve body 12 connected in sequence from top to bottom, and the valve cover 2 and the upper intermediate body 8 form a cavity 1 20, the upper intermediate body 8 and the diaphragm 9 form a cavity 20, the diaphragm 9 and the lower intermediate body 11 form a cavity 3 22, the lower intermediate body 11 and the pressure-limiting piston 13 form a cavity 4 23, and the pressure-limiting piston 13 and the valve body 12 form a cavity 5 24.

[0060] The cavity 1 20 is connected with the empty vehicle solenoid valve 18 and the loaded vehicle solenoid valve 19, and an empty vehicle sandwich valve 6 and a loaded vehicle sandwich valve are provided in the cavity 1 20 for respectively controlling the opening and closing of the cavity 1 20 and the channel openings of the empty vehicle solenoid valve 18 and the loaded vehicle solenoid valve 19.

[0061] The cavity one 20 is connected with the cavity two 20, the cavity three 22 is connected with the atmosphere, the cavity five 24 is connected with the auxiliary air cylinder and the brake cylinder through the inflation channel 25, the inflation channel 25 between the cavity five 24 and the brake cylinder is provided with an inflation channel branch 26, the inflation channel branch 26 is respectively connected with the cavity four 23, the heavy vehicle solenoid valve 19, and the empty vehicle solenoid valve 18, and the cavity five 24 includes a brake cylinder inflation valve port 27.

[0062] The diaphragm 9 and the pressure-limiting piston 13 are connected via a push rod 10, and the pressure-limiting piston 13 is connected to an air-filled sandwich valve 16. The compressed gas in the second cavity 20 and the fourth cavity 23 moves the diaphragm 9 and the push rod 10, driving the air-filled sandwich valve 16 and the pressure-limiting piston 13 to move up and down. The air-filled sandwich valve 16 controls the opening and closing of the brake cylinder air valve port 27, and the pressure-limiting piston 13 can automatically reset.

[0063] Furthermore, the auxiliary air cylinder is connected to the cavity 5 24 through a control valve or a distribution valve. The loaded vehicle electromagnetic valve 19 and the empty vehicle electromagnetic valve 18 receive signals from the driver's cab or the vehicle control room.

[0064] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. An empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch, characterized in that: It comprises a valve cover, an upper intermediate body, a diaphragm, a lower intermediate body, a limit piston and a valve body which are arranged in sequence, wherein the valve cover and the upper intermediate body form a first cavity, the upper intermediate body and the diaphragm form a second cavity, the diaphragm and the lower intermediate body form a third cavity, the lower intermediate body and the limit piston form a fourth cavity, and the limit piston and the valve body form a fifth cavity; The cavity one is connected to the cavity two, the cavity three is connected to the atmosphere, the cavity five is connected to the auxiliary air cylinder and the brake cylinder through the inflation dark channel, the inflation dark channel between the cavity five and the brake cylinder is provided with an inflation dark channel branch, the inflation dark channel branch is respectively connected to the cavity four, the heavy vehicle solenoid valve, and the empty vehicle solenoid valve, and the cavity five is provided with a brake cylinder inflation valve port; The cavity one is connected with the empty vehicle solenoid valve and the loaded vehicle solenoid valve, and the cavity one is provided with an empty vehicle sandwich valve and a loaded vehicle sandwich valve for respectively controlling the opening and closing of the cavity one and the channel openings of the empty vehicle solenoid valve and the loaded vehicle solenoid valve; The diaphragm and the pressure-limiting piston are connected by a push rod and can drive the piston to reciprocate. The pressure-limiting piston is located on one side of the brake cylinder inflation valve port and is connected to an inflation sandwich valve. The inflation sandwich valve controls the opening and closing of the brake cylinder inflation valve port under the drive of the reciprocating motion of the piston.

2. The empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch according to claim 1 is characterized in that: A spring 1 is arranged between the inflatable sandwich valve and the pressure limiting piston.

3. The empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch according to claim 1 is characterized in that: An automatic reset device is arranged between the pressure limiting piston and the valve body.

4. The empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch according to claim 1 is characterized in that: The empty vehicle sandwich valve comprises an empty vehicle sandwich valve and an empty vehicle sandwich valve spring, one end of the empty vehicle sandwich valve spring is connected to the inner side of the valve cover, and the other end is connected to the empty vehicle sandwich valve.

5. The empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch according to claim 1 is characterized in that: The heavy vehicle sandwich valve comprises a heavy vehicle sandwich valve and a heavy vehicle sandwich valve spring. The heavy vehicle sandwich valve spring is connected to the inner side of the valve cover, and the other end is connected to the heavy vehicle sandwich valve.

6. The empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch according to claim 1, characterized in that: The cavity 1 is communicated with the heavy vehicle solenoid valve through a heavy vehicle secret passage.

7. The empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch according to claim 1 is characterized in that: The cavity 1 is communicated with the empty vehicle solenoid valve through an empty vehicle secret passage.

8. The empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch according to claim 1, characterized in that: A sealing ring is arranged between the valve cover and the upper intermediate body.

9. The empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch according to claim 1, characterized in that: The auxiliary air cylinder is connected to the cavity five through a control valve or a distribution valve.

10. The empty and loaded vehicle adjustment device for railway vehicles with a solenoid valve switch according to claim 3, characterized in that: The automatic reset device between the pressure-limiting piston and the valve body is spring 2.

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