Electro-hydraulic control valve group for mining crushing device

Abstract

The utility model discloses an electro-hydraulic control valve group for a mining crushing device, which comprises a valve body which is respectively connected with a rotary motor and a crushing hammer. A speed adjusting assembly, a driving assembly of the breaking hammer and an oil cylinder driving assembly are arranged in the valve body. The utility model solves the problem that the existing crushing device cannot adjust the speed, so that the crushing device is difficult to accurately align at a crushing object (large coal), and the operation is inconvenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of mining crushing equipment control, and relates to an electro-hydraulic control valve group for mining crushing devices. Background Art

[0002] In the process of coal mining, large pieces of coal may be mined, but large pieces of coal cannot be transported smoothly by conveyors, which may easily cause coal pile accidents. It is necessary to stop production to manually crush large pieces of coal, which reduces the efficiency of coal mining. The current way to solve this problem is to use a crushing device fixedly installed on the head of the scraper conveyor to crush large pieces of coal. However, the existing crushing device needs to be controlled by a manual control valve. Using an ordinary manual reversing valve to control the crushing device will produce a large impact due to the lack of a speed regulating device, making it difficult to align the crushing device during operation. The crushing device cannot be fixed in an ideal position to crush large pieces of coal, which will cause the crushing device to deviate from the large pieces of coal to be crushed during the falling process, causing inconvenience in use. Utility Model Content

[0003] The utility model aims to provide an electro-hydraulic control valve group for a mining crushing device, which solves the problem that the existing crushing device cannot adjust the speed, making it difficult for the crushing device to accurately align with the crushing object (large coal block), resulting in inconvenient operation.

[0004] The technical solution adopted by the utility model is that the electro-hydraulic control valve group for a mining crushing device comprises a valve body, and the valve body is respectively connected to a rotary motor and a crushing hammer.

[0005] The utility model is also characterized in that:

[0006] The valve body includes a speed regulating component, a driving component of a breaker hammer and a cylinder driving component.

[0007] The speed regulating assembly includes a speed regulating valve IX, which is sequentially connected to a balancing valve I and a rotary motor, the balancing valve I is also connected to a shuttle valve, the shuttle valve is respectively connected to a pressure gauge and a hydraulic reversing valve, and the speed regulating valve IX is also sequentially connected to an electromagnetic pilot valve I and a hydraulically controlled reversing valve core I;

[0008] It also includes a balancing valve II and a speed regulating valve X which are connected in sequence, and the balancing valve II is connected to the rotating motor.

[0009] The oil cylinder drive assembly includes three groups of drive valve groups, the first group of drive valve groups includes an electromagnetic pilot valve II and a hydraulically controlled reversing valve core II connected in sequence;

[0010] The second drive valve group includes an electromagnetic pilot valve III and a hydraulically controlled reversing valve core III connected in sequence;

[0011] The third driving valve group includes an electromagnetic pilot valve IV and a hydraulically controlled reversing valve core IV which are connected in sequence.

[0012] The driving assembly of the breaker hammer comprises an electromagnetic pilot valve VI and a hydraulically controlled reversing valve core VI which are connected in sequence.

[0013] The valve body also includes a set of spare drive components, which include an electromagnetic pilot valve V and a hydraulically controlled reversing valve core V that are connected in sequence.

[0014] A backwash filter is connected to the inlet of the valve body.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1) It realizes electric control and remote control which were previously impossible with manual control valves;

[0017] 2) Ensure that the crushing device and valve group components will not be damaged due to excessive pressure;

[0018] 3) Reduce hydraulic shock and protect hydraulic components;

[0019] 4) Ensure the service life of the crushing device;

[0020] 5) Reduced labor input and improved work efficiency;

[0021] 6) Remote button operation, simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the electro-hydraulic control valve group for a mining crushing device of the utility model;

[0023] Figure 2 The utility model is a schematic diagram (hydraulic principle) of the internal structure of the electro-hydraulic control valve group for a mining crushing device.

[0024] In the figure, 1. manual backwash filter, 2. valve body, 3. pressure reducing valve, 4. pilot filter element, 5. check valve, 6. solenoid pilot valve I, 7. hydraulic control reversing valve core I, 8. solenoid pilot valve II, 9. hydraulic control reversing valve core II, 10. solenoid pilot valve III, 11. hydraulic control reversing valve core III, 12. solenoid pilot valve IV, 13. hydraulic control reversing valve core IV, 14. solenoid pilot valve V, 15. hydraulic control reversing valve core V, 16. solenoid pilot valve VI, 17. hydraulic control reversing valve core VI , 18. Breaking hammer, 19. Speed ​​regulating valve I, 20. Speed ​​regulating valve II, 21. Speed ​​regulating valve III, 22. Speed ​​regulating valve IV, 23. Oil cylinder III, 24. Speed ​​regulating valve V, 25. Speed ​​regulating valve VI, 26. Oil cylinder II, 27. Speed ​​regulating valve VII, 28. Speed ​​regulating valve VIII, 29. Oil cylinder I, 30. Speed ​​regulating valve IX, 31. Speed ​​regulating valve X, 32. Balance valve II, 33. Balance valve I, 34. Pressure gauge, 35. Shuttle valve, 36. Hydraulic reversing valve, 37. Rotary motor. DETAILED DESCRIPTION

[0025] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0026] Example 1

[0027] The utility model is an electro-hydraulic control valve group for a mining crushing device, such as Figure 1 As shown, it includes a valve body 2, which is mounted on a mounting plate C1, and the mounting plate C1 is used to fix all components of the entire valve body 2; the mounting plate C1 is installed with a solenoid valve driver C2, and each component in the valve body 2 is driven by the solenoid valve driver C2.

[0028] like Figure 2 As shown, a backwash filter 1 is connected to the inlet of the valve body 2, and a pressure reducing valve 3 and a pilot filter element 4 are arranged in the valve body 2. The pilot filter element 4 is respectively connected to the solenoid pilot valve I6, the solenoid pilot valve II8, the solenoid pilot valve III10, the solenoid pilot valve IV12, the solenoid pilot valve V14, and the solenoid pilot valve VI16.

[0029] Example 2

[0030] The solenoid pilot valve I6 is connected to the hydraulically controlled reversing valve core I7, the solenoid pilot valve II8 is connected to the hydraulically controlled reversing valve core II9, the solenoid pilot valve III10 is connected to the hydraulically controlled reversing valve core III11, the solenoid pilot valve IV12 is connected to the hydraulically controlled reversing valve core IV13, the solenoid pilot valve V14 is connected to the hydraulically controlled reversing valve core V15, and the hydraulically controlled reversing valve core V16 is connected to the hydraulically controlled reversing valve core VI17.

[0031] Example 3

[0032] The hydraulically controlled reversing valve core I7 is connected to the speed regulating valve IX30, which is in turn connected to the balancing valve I33 and the rotary motor 37. The balancing valve I33 is also connected to the shuttle valve 35, which is respectively connected to the pressure gauge 34 and the hydraulically controlled reversing valve 36. The speed regulating valve IX30 is also connected to the electromagnetic pilot valve I6 and the hydraulically controlled reversing valve core I7;

[0033] It also includes a balancing valve II32 and a speed regulating valve X31 which are connected in sequence, and the balancing valve II32 is connected to the rotating motor 37 .

[0034] The electromagnetic pilot valve II8 is connected to the hydraulic control reversing valve core II9 and then controls the oil cylinder I29;

[0035] The electromagnetic pilot valve III10 is connected to the hydraulic control reversing valve core III11 and then controls the oil cylinder II26;

[0036] The electromagnetic pilot valve IV12 is connected to the hydraulic control reversing valve core IV13 and then controls the oil cylinder III23;

[0037] Solenoid pilot valve V14 is connected to hydraulic control reversing valve core V15 for standby use;

[0038] The hydraulically controlled reversing valve core V16 is connected to the hydraulically controlled reversing valve core VI17 to drive the breaker 18.

[0039] The working process of the electro-hydraulic control valve group for mining crushing device of the utility model is as follows: the working medium enters the manual backwash filter 1 from the (liquid inlet) P port to complete the filtering work, and comes out from the P1 port (liquid outlet) and is divided into three routes:

[0040] The first part enters the valve body 2 from the P2 port (the liquid inlet of the valve body), and the pressure reduction is completed by the pressure reducing valve 3, which serves as the working medium of the first five circuits (the electromagnetic pilot valve I6 and the hydraulic control reversing valve core I7 form a circuit; the electromagnetic pilot valve II8 and the hydraulic control reversing valve core II9 form a circuit, the electromagnetic pilot valve III10 and the hydraulic control reversing valve core III11 form a circuit; the electromagnetic pilot valve IV12 and the hydraulic control reversing valve core IV13 form a circuit; the electromagnetic pilot valve V14 and the hydraulic control reversing valve core V15 form a circuit), and the excess liquid generated by the pressure reduction will be discharged from the valve body 2 from the X port (liquid discharge port);

[0041] The second part enters the valve body 2 from P3 (liquid inlet) as the working medium of the breaker 18;

[0042] The third part enters the valve body 2 from the P2 port, then passes through the pilot filter element 4, and then enters the solenoid pilot valve I6, the solenoid pilot valve II8, the solenoid pilot valve III10, the solenoid pilot valve IV12, the solenoid pilot valve V14, and the solenoid pilot valve VI16 as the pilot control fluid.

[0043] When the rotary motor 37 in the crushing device needs to swing clockwise, a remote control or button is used to transmit an electrical signal to the electronic control system. The electrical signal will be transmitted to the electromagnetic pilot valve I6 through the electromagnetic valve driver C2, so that the electromagnetic pilot valve I6 opens, and the pilot control fluid will enter the hydraulic control reversing valve core I7 after passing through the electromagnetic pilot valve I6, thereby opening the hydraulic control reversing valve core I7; at this time, the working medium that has completed the decompression will enter the speed control valve IX30 through the control reversing valve core I7 to adjust the flow rate to prevent the speed from being too fast.

[0044] The flow-regulated working medium will be divided into two parts after passing through the balancing valve I33:

[0045] The first part will enter the rotary motor 37 through the L port (clockwise liquid inlet), causing the rotary motor 37 to have a tendency to rotate clockwise;

[0046] The second portion will pass through shuttle valve 35.

[0047] The working medium passing through shuttle valve 35 is divided into two parts again:

[0048] The first part enters the pressure gauge 34 to display the current working pressure;

[0049] The second part will enter the hydraulic reversing valve 36 and cause the hydraulic reversing valve 36 to reverse. Then the working medium will pass through the hydraulic reversing valve 36 from the K port (brake port) into the brake of the rotary motor 37, causing the brake of the rotary motor 37 to open. At this time, the rotary motor 37 starts to rotate, causing the rotary motor 37 to swing clockwise.

[0050] The medium that completes the work in the rotary motor 37 will enter the valve body 2 from the R port (counterclockwise working port) through the balance valve II32, the speed control valve X31, and the hydraulic control reversing valve core I7 in sequence, and then be discharged from the valve body 2 from the T port (return liquid port).

[0051] When the crushing device needs to stop swinging clockwise, it stops transmitting electrical signals to the electronic control system, and the working medium will not be supplied to the rotary motor 37, causing the rotary motor 37 to stop moving. The hydraulic reversing valve 36 returns to its original position, and the medium originally stored in the brake of the rotary motor 37 will be discharged from the valve body 2 through the X port (drain port) after passing through the hydraulic reversing valve 36, causing the brake of the rotary motor 37 to brake, thereby stopping the rotary motor 37 from swinging.

[0052] If the oil cylinder I29 installed on the crushing device needs to be extended, the remote control or button is used to transmit an electric signal to the electric control system, and the electric signal will be transmitted to the electromagnetic pilot valve II8 through the electromagnetic valve driver C2, so that the electromagnetic pilot valve II8 is opened, and the pilot control fluid will pass through the electromagnetic pilot valve II8, and then enter the hydraulic control reversing valve core II9, so that the hydraulic control reversing valve core II9 is ​​opened; at this time, the working medium that has completed the decompression will enter the speed regulating valve VIII28 through the hydraulic control reversing valve core II9 to adjust the flow rate, so as to prevent the oil cylinder I29 from speeding too fast. Then it enters the rodless cavity of the oil cylinder I29 through the A1 port (the extension port of the oil cylinder I29), so that the oil cylinder I29 is extended. The working medium originally in the rodless chamber of the cylinder I29 will enter the valve body 2 from the B1 port (the cylinder port of the cylinder I29) through the speed control valve VII27 and the hydraulically controlled reversing valve core II9 in sequence, and then be discharged from the valve body 2 from the T port. At this time, the cylinder I29 extends to the positioning position that needs to be crushed.

[0053] The working mode of oil cylinder II26 and oil cylinder III23 is exactly the same as that of oil cylinder I29, and the three oil cylinders work according to actual use needs.

[0054] If the oil cylinder II26 installed on the crushing device needs to be extended, the remote control or button is used to transmit an electrical signal to the electronic control system, and the electrical signal will be transmitted to the electromagnetic pilot valve III10 through the electromagnetic valve driver C2, so that the electromagnetic pilot valve III10 is opened, and the pilot control fluid will pass through the electromagnetic pilot valve III10, and then enter the hydraulic control reversing valve core III11, so that the hydraulic control reversing valve core III11 is opened; at this time, the working medium that has completed the decompression will enter the speed regulating valve VI25 through the hydraulic control reversing valve core III11 to adjust the flow rate, so as to prevent the oil cylinder II26 from speeding up too fast. Then it enters the rodless cavity of the oil cylinder II26 through the A2 port (the extension port of the oil cylinder II26), so that the oil cylinder II26 is extended. The working medium originally in the rodless chamber of the cylinder II26 will enter the valve body 2 from the B2 port (the cylinder port of the cylinder II26) through the speed control valve V24 and the hydraulically controlled reversing valve core III11 in sequence, and then be discharged from the valve body 2 from the T port. At this time, the cylinder II26 extends to the positioning position that needs to be crushed.

[0055] If the oil cylinder III23 installed on the crushing device needs to be extended, the remote control or button is used to transmit an electrical signal to the electronic control system, and the electrical signal will be transmitted to the electromagnetic pilot valve IV12 through the electromagnetic valve driver C2, so that the electromagnetic pilot valve IV12 opens, and the pilot control fluid passes through the electromagnetic pilot valve IV12 and then enters the hydraulic control reversing valve core IV13, so that the hydraulic control reversing valve core IV13 opens; at this time, the working medium that has completed the decompression will enter the speed regulating valve IV22 through the hydraulic control reversing valve core IV13 to adjust the flow rate, so as to prevent the oil cylinder III23 from speeding up too fast. Then it enters the rodless cavity of the oil cylinder III23 through the A3 port (the extension port of the oil cylinder III23), so that the oil cylinder III23 extends. The working medium originally in the rodless chamber of the cylinder III23 will enter the valve body 2 from the B3 port (the cylinder port of the cylinder III23) through the speed control valve III21 and the hydraulically controlled reversing valve core IV13 in sequence, and then be discharged from the valve body 2 from the T port. At this time, the cylinder III23 extends to the positioning position that needs to be crushed.

[0056] The hydraulically controlled reversing valve core V15 is connected to the speed regulating valve I19 and the speed regulating valve II20, and the A4 port and the B4 port are used as backup ports for other oil ports.

[0057] The actuator controlled by the crushing device in the utility model includes three oil cylinders (oil cylinder III23, oil cylinder II26, oil cylinder I29), a motor 37 and a crushing hammer 18.

[0058] When the oil cylinder III23, oil cylinder II26, and oil cylinder I29 are extended to the crushing position, the breaker 18 starts to work. If the breaker 18 on the crushing device needs to start crushing, the remote control or button is used to transmit an electrical signal to the electronic control system. The electrical signal will be transmitted to the electromagnetic pilot valve VI16 through the electromagnetic valve driver C2, so that the electromagnetic pilot valve VI16 opens, and the pilot control fluid will pass through the electromagnetic pilot valve VI16, and then enter the electromagnetic pilot valve VI16, so that the hydraulic control reversing valve core VI17 opens. At this time, the undecompressed working medium that enters the valve body 2 from the P3 port will enter the breaker 18 through the A5 port (breaking hammer liquid inlet) of the hydraulic control reversing valve core VI17 and complete the crushing work. The working medium that completes the crushing work enters the valve body 2 from the B5 port (breaking hammer liquid outlet), and then passes through the hydraulic control reversing valve core VI17 and is discharged from the valve body 2 from the T port.

Claims

1. Electro-hydraulic control valve group for mining crushing device, characterized by: It comprises a valve body (2), the valve body (2) being respectively connected to a rotary motor (37) and a breaker hammer (18); The valve body (2) includes a speed regulating assembly, a driving assembly of a breaker hammer (18) and a cylinder driving assembly; The speed regulating assembly comprises a speed regulating valve IX (30), the speed regulating valve IX (30) being connected in sequence to a balancing valve I (33) and a rotary motor (37), the balancing valve I (33) being further connected to a shuttle valve (35), the shuttle valve (35) being respectively connected to a pressure gauge (34) and a hydraulic reversing valve (36), the speed regulating valve IX (30) being further connected in sequence to an electromagnetic pilot valve I (6) and a hydraulically controlled reversing valve core I (7); It also includes a balancing valve II (32) and a speed regulating valve X (31) which are connected in sequence, and the balancing valve II (32) is connected to the rotating motor (37).

2. The electro-hydraulic control valve group for mining crushing device according to claim 1 is characterized in that: The oil cylinder drive assembly comprises three groups of drive valve groups, the first group of drive valve groups comprises an electromagnetic pilot valve II (8) and a hydraulically controlled reversing valve core II (9) connected in sequence; The second drive valve group comprises an electromagnetic pilot valve III (10) and a hydraulically controlled reversing valve core III (11) which are connected in sequence; The third drive valve group comprises an electromagnetic pilot valve IV (12) and a hydraulically controlled reversing valve core IV (13) which are connected in sequence.

3. The electro-hydraulic control valve group for mining crushing device according to claim 1 is characterized in that: The driving assembly of the breaker hammer (18) comprises an electromagnetic pilot valve VI (16) and a hydraulically controlled reversing valve core VI (17) which are connected in sequence.

4. The electro-hydraulic control valve group for mining crushing device according to claim 1 is characterized in that: The valve body (2) also includes a set of spare drive components, which include an electromagnetic pilot valve V (14) and a hydraulically controlled reversing valve core V (15) connected in sequence.

5. The electro-hydraulic control valve group for mining crushing device according to claim 1 is characterized in that: A backwash filter (1) is connected to the inlet of the valve body (2).

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