Ultrahigh frequency response valve position closed-loop control amplifier

Abstract

The invention discloses an ultrahigh frequency response valve position closed-loop control amplifier, and belongs to the field of amplifiers, the ultrahigh frequency response valve position closed-loop control amplifier is mainly composed of a shell, a circuit board, a fan, a first wire harness, a second wire harness, a fixing block, a connecting block, a limiting plate and a mounting rack, the two sides of the fixing block are each provided with a damping assembly, and each damping assembly comprises a reed; a connecting groove is formed in the connecting block; a T-shaped head is arranged on the mounting frame; when the fixing block and the shell are connected together, the connection block and the fixing block are disconnected, the T-shaped head is limited in the connecting groove by the limiting plate, and the circuit board is damped by the reed; when the fixing block and the shell are disconnected, the connecting block and the fixing block are connected together, the connecting block moves to the leftmost side, and the mounting frame and the connecting block are disconnected; the connecting block moves to the rightmost side, and the mounting frame and the connecting block are connected together; the circuit board can be quickly disassembled and assembled, wiring harness connection and disconnection are simple, and maintenance is time-saving and labor-saving; meanwhile, the influence of vibration on the circuit board is relieved, wire harnesses cannot loosen, and the amplifier works stably.

Description

Technical Field

[0001] This invention belongs to the field of amplifier technology, and particularly relates to an ultra-high frequency response valve position closed-loop control amplifier. Background Technology

[0002] Amplifiers are key components of electro-hydraulic proportional control elements or systems, providing drive currents with specific performance characteristics to electro-hydraulic proportional valves to achieve open-loop or closed-loop regulation of the valves or systems. As a crucial control element in ultra-high frequency (UHF) valves, the stability and reliability of the UHF valve's position closed-loop control amplifier significantly impact its operational quality. However, existing UHF valve position closed-loop control amplifiers still suffer from the following problems during operation: When an ultra-high frequency (UHF) resonant valve is in operation, the valve core moves back and forth at high frequency, generating strong vibrations. In existing technology, the UHF resonant valve position closed-loop control amplifier is usually fixedly connected to the UHF resonant valve. This causes the circuit board inside the amplifier to be affected by vibration, resulting in problems such as loose solder joints, component damage, and reduced reliability. At the same time, vibration can also cause the electrical connection between the wiring harness and the circuit board to loosen, causing the UHF resonant valve position closed-loop control amplifier to fail.

[0003] If the existing UHF valve position closed-loop control amplifier needs to be repaired, the worker needs to use tools to remove the entire amplifier from the UHF valve and then disassemble its housing in order to remove the circuit board for repair. Since the UHF valve position closed-loop control amplifier is generally connected to the UHF valve with screws, and its housing is also usually connected with screws, the repair work is cumbersome, time-consuming and labor-intensive. Summary of the Invention

[0004] Technical problem to be solved: The present invention provides an ultra-high frequency response valve position closed-loop control amplifier, which can solve the above-mentioned problems.

[0005] Technical Solution: To achieve the above objectives, the present invention adopts the following technical solution: an ultra-high frequency response valve position closed-loop control amplifier, comprising a housing, a circuit board, a fan, a first wiring harness, and a second wiring harness, wherein the circuit board is located inside the housing; the fan is located inside the housing and is used to dissipate heat from the circuit board; the connection ends of the first wiring harness and the second wiring harness are both electrically connected to the circuit board; it also includes a fixing block, a connecting block, a limiting plate, and a mounting bracket; the fixing block is located inside the housing and is selectively connected to the housing; a set of damping components is provided on the left and right sides of the fixing block, and the damping components include two springs; the connecting block is located inside the fixing block and is selectively connected to the fixing block; the connecting block is located between two sets of damping components; a connecting groove is provided on the left side of the connecting block; two limiting plates are provided, both slidably disposed inside the connecting block, and the two limiting plates are located in the connecting groove. The mounting bracket is located inside the outer casing, and the circuit board is mounted on the mounting bracket. A T-shaped head is provided on the right side of the mounting bracket, extending into the connecting groove. When the fixing block and the outer casing are connected, the connecting block and the fixing block are disconnected, the limiting plate extends into the connecting groove, and the T-shaped head is limited within the connecting groove, connecting the mounting bracket and the connecting block together. When the fixing block and the outer casing are disconnected, the connecting block and the fixing block are connected. When the connecting block moves to the leftmost position, the limiting plate is driven to exit the connecting groove, the T-shaped head is released from its limiting position, the mounting bracket and the connecting block are disconnected, and the mounting bracket can exit the outer casing. When the connecting block moves to the rightmost position, the limiting plate extends into the connecting groove, the T-shaped head is limited within the connecting groove, and the mounting bracket and the connecting block are connected together.

[0006] As a preferred embodiment of the present invention, the amplifier further includes a control rod; the connecting block is provided with a control groove; the outer shell is provided with an inner wall groove group, the inner wall groove group including a deep flat groove, a shallow flat groove and an inclined groove connected in sequence, the deep flat groove being deeper than the shallow flat groove; the control rod is slidably disposed in the control groove in the left-right direction, the control rod is provided with a control rod pin, and the control rod pin is slidably connected to the deep flat groove.

[0007] As a preferred embodiment of the present invention, the amplifier further includes a driving assembly; the driving assembly comprises two sets, respectively disposed on the upper and lower sides of the control rod; the driving assembly includes a telescopic cap, a telescopic spring, and a connecting rod; control surface groups are respectively provided on the upper and lower inner walls of the control groove, the control surface groups including a left inclined surface and a right inclined surface; the telescopic cap is slidably connected to the control rod; the telescopic spring is located inside the telescopic cap and is used to drive the telescopic cap to move towards the control surface group; one end of the connecting rod is hinged to the control rod, and the other end is hinged to the limiting plate.

[0008] As a preferred embodiment of the present invention, the amplifier further includes a switching shaft; the outer casing is also provided with a sliding groove, and a circular groove is provided on the middle side wall of the sliding groove; a square groove is provided on the upper side of the connecting block; the switching shaft and the positioning block are rotatably connected, the upper end of the switching shaft extends out of the outer casing, the lower end of the switching shaft is provided with a switching plate, the switching plate is located in the square groove, and a boss is also provided in the middle of the switching shaft, the boss is located in the sliding groove, and the boss is composed of an arc portion and a cut portion.

[0009] As a preferred embodiment of the present invention, when the cut surface on the boss faces the circular groove, the two ends of the switching plate abut against the inner walls of the left and right sides of the square groove, and the boss can reciprocate along the sliding groove, and the connecting block can be driven to move accordingly through the fixing block; when the arc portion on the boss is in contact with the inner wall of the circular groove, and the cut surface on the boss faces the left or right side, the boss is limited in the circular groove, the two ends of the switching plate abut against the inner walls of the front and rear sides of the square groove, and the connecting block can reciprocate relative to the fixing block.

[0010] As a preferred embodiment of the present invention, the amplifier further includes a fixing plate; the connecting block is provided with an upper wiring hole and a lower wiring hole, and the two terminals on the circuit board are respectively located in the upper wiring hole and the lower wiring hole, and the terminals of the first wire harness and the second wire harness extend into the upper wiring hole and the lower wiring hole respectively; the fixing plate is slidably connected to the connecting block in the vertical direction, and the fixing plate can reciprocate between the upper position and the lower position, the fixing plate is provided with a plate pin, the plate pin is slidably connected to the inner wall groove group, and the fixing plate is also provided with an upper plate hole and a lower plate hole.

[0011] As a preferred embodiment of the present invention, when the fixing plate is in the upper position, the plate pin is located in the shallow flat groove, and the upper plate hole and the lower plate hole are respectively offset from the upper wiring hole and the lower wiring hole. The fixing plate limits the wiring ends of the first wire harness and the second wire harness within the connecting block. When the fixing plate is in the lower position, the plate pin is located at the right end of the inclined groove, and the upper plate hole and the lower plate hole are respectively aligned with the upper wiring hole and the lower wiring hole. The wiring ends of the first wire harness and the second wire harness can be withdrawn from the connecting block.

[0012] As a preferred embodiment of the present invention, the amplifier further includes a connecting frame; the connecting frame and the mounting frame are rotatably connected, the connecting frame presses on the circuit board and limits its position, and the fan is fixedly mounted on the connecting frame.

[0013] Compared with the prior art, the advantages of the present invention are: 1. By setting up a connecting slot, a T-shaped head, and a limiting plate, when the telescopic cap is on the left inclined plane, the control rod, through the connecting rod, drives the limiting plate into the connecting slot, fixing the T-shaped head in the connecting slot, thus connecting the mounting bracket and the connecting block together. When the telescopic cap is on the right inclined plane, the control rod, through the connecting rod, drives the limiting plate out of the connecting slot, allowing the T-shaped head to exit the connecting slot and disconnecting the mounting bracket and the connecting block. When the circuit board needs maintenance, the mounting bracket and the connecting block can be quickly connected and separated, enabling rapid disassembly and installation of the circuit board without removing the entire amplifier from the UHF response valve, saving time and effort in maintenance.

[0014] 2. By setting a fixing plate, when the fixing plate is in the upper position, the upper plate holes and lower plate holes are offset from the upper wiring holes and lower wiring holes. The fixing plate can limit the connection ends of the first wire harness and the second wire harness within the connecting block. Since the connecting block and the mounting bracket are connected together at this time, the circuit board is fixedly mounted on the mounting bracket, thereby ensuring the reliability of the electrical connection between the first wire harness and the second wire harness and the circuit board. When the fixing plate is in the lower position, the upper plate holes and lower plate holes are aligned with the upper wiring holes and lower wiring holes, allowing the first wire harness and the second wire harness to be quickly pulled out, thereby disconnecting the electrical connection between the first wire harness and the second wire harness and the circuit board, making the connection and disconnection of the first wire harness and the second wire harness simple and convenient.

[0015] 3. By setting up connecting blocks, positioning blocks, and reeds, when the ultra-high frequency response valve vibrates during operation, the vibration will drive the positioning block to reciprocate. Through the action of the reeds, the impact of vibration on the connecting blocks can be reduced. Since the mounting bracket and the connecting blocks are connected together at this time, the circuit board is fixedly mounted on the mounting bracket, and the connection ends of the first and second wire harnesses are limited within the connecting blocks, thereby reducing the impact of vibration on the circuit board. At the same time, it ensures that the electrical connection between the connection ends of the first and second wire harnesses and the circuit board will not loosen, making the circuit board more reliable, longer in life, and the amplifier more stable in operation. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the present invention; Figure 2 For the present invention Figure 1 A cross-sectional view along the AA direction; Figure 3 For the present invention Figure 2 Cross-sectional view along the BB direction; Figure 4 For the present invention Figure 1 A cross-sectional view along the CC direction; Figure 5 For the present invention Figure 1 A cross-sectional view along the DD direction; Figure 6 For the present invention Figure 1Cross-sectional view along the EE direction; Figure 7 For the present invention Figure 1 Enlarged view at point I; Figure 8 For the present invention Figure 2 Enlarged view at point II; Figure 9 For the present invention Figure 3 Enlarged view of section III Figure 10 For the present invention Figure 7 Sectional view in the FF direction Figure 11 For the present invention Figure 7 Cross-sectional view in the middle GG direction Figure 12 This is a cross-sectional view of an ultra-high frequency response valve. Detailed Implementation

[0017] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0018] See Figures 1-12An ultra-high frequency response valve position closed-loop control amplifier includes a housing 1, a circuit board 32, a fan 31, a first wiring harness 33, and a second wiring harness 34. The circuit board 32 is located inside the housing 1. The fan 31 is located inside the housing 1 and is used to dissipate heat from the circuit board 32. The connection ends of the first wiring harness 33 and the second wiring harness 34 are both electrically connected to the circuit board 32. This embodiment also includes a fixing block 7, a connecting block 9, a limiting plate 19, and a mounting bracket 5. The fixing block 7 is located inside the housing 1 and is selectively connected to the housing 1. A set of shock-absorbing components is provided on the left and right sides of the fixing block 7, and the shock-absorbing components include two springs 8. The connecting block 9 is located inside the fixing block 7 and is selectively connected to the fixing block 7. The connecting block 9 is located between the two sets of shock-absorbing components, and a connecting groove 14 is provided on the left side of the connecting block 9. Two limiting plates 19 are provided, both of which are slidably disposed inside the connecting block 9. The two limiting plates 19 are located on the upper and lower sides of the connecting groove 14. The mounting bracket 5 is located inside the housing 1, and the circuit board 32 is mounted on it. On the mounting bracket 5, a T-shaped head 6 is provided on the right side, which extends into the connecting groove 14. When the fixing block 7 and the outer shell 1 are connected together, the connecting block 9 and the fixing block 7 are disconnected, the limiting plate 19 extends into the connecting groove 14, and the T-shaped head 6 is limited in the connecting groove 14, connecting the mounting bracket 5 and the connecting block 9 together. The spring 8 can provide shock absorption for the connecting block 9, the mounting bracket 5, and the circuit board 32. When the fixing block 7 and the outer shell 1 are disconnected, the connecting block 9 and the fixing block 7 are connected together. When the connecting block 9 moves to the leftmost position, the transmission limiting plate 19 exits the connecting groove 14, the T-shaped head 6 is released from its limit, the mounting bracket 5 and the connecting block 9 are disconnected, and the mounting bracket 5 can exit the outer shell 1. When the connecting block 9 moves to the rightmost position, the limiting plate 19 extends into the connecting groove 14, the T-shaped head 6 is limited in the connecting groove 14, and the mounting bracket 5 and the connecting block 9 are connected together, thus enabling quick disassembly and installation of the circuit board 32.

[0019] In this embodiment, when the fixing block 7 and the outer shell 1 are fixed together, the connecting block 9 and the fixing block 7 are separated, and the limiting plate 19 extends into the connecting groove 14 to limit the T-head 6, thereby fixing the mounting bracket 5 and the connecting block 9 together. Thus, when the ultra-high frequency valve vibrates during operation, the spring 8 can dampen the vibration of the connecting block 9, the mounting bracket 5, and the circuit board 32, resulting in higher reliability and longer lifespan for the circuit board 32. When the fixing block 7 and the outer shell 1 are separated, the connecting block 9 and the fixing block 7 are connected together. When the connecting block 9 moves to the leftmost position, the limiting plate 19 completely exits the connecting groove 14, the T-head 6 is released from its limit, the mounting bracket 5 and the connecting block 9 are separated, and the mounting bracket 5 can exit the outer shell 1. When the connecting block 9 moves to the rightmost position, the limiting plate 19 extends into the connecting groove 14 to fix the T-head 6 within the connecting groove 14, and the mounting bracket 5 and the connecting block 9 are fixed, thereby quickly achieving the disassembly and assembly of the circuit board 32, making maintenance work time-saving and labor-saving.

[0020] See Figure 2 , Figure 3 , Figure 5 , Figure 8 , Figure 9 The amplifier also includes a control rod 15; a control groove 11 is provided on the connecting block 9; an inner wall groove group is provided on the outer shell 1, the inner wall groove group includes a deep flat groove 2, a shallow flat groove 3 and an inclined groove 4 connected in sequence, the deep flat groove 2 is deeper than the shallow flat groove 3; the control rod 15 is slidably disposed in the control groove 11 in the left and right direction, and a control rod pin 16 is provided on the control rod 15, the control rod pin 16 and the deep flat groove 2 are slidably connected.

[0021] See Figure 3 , Figure 5 , Figure 9 The amplifier also includes a drive assembly; the drive assembly has two sets, respectively arranged on the upper and lower sides of the control rod 15; the drive assembly includes a telescopic cap 17, a telescopic spring 18 and a connecting rod 20; control surface groups are respectively provided on the upper and lower inner walls of the control groove 11, the control surface groups include a left inclined surface 12 and a right inclined surface 13; the telescopic cap 17 is slidably connected to the control rod 15; the telescopic spring 18 is located inside the telescopic cap 17 and is used to drive the telescopic cap 17 to move towards the control surface group; one end of the connecting rod 20 is hinged to the control rod 15, and the other end is hinged to the limiting plate 19.

[0022] See Figure 1 , Figure 5 , Figure 7 , Figure 10 , Figure 11 The amplifier also includes a switching shaft 26; the housing 1 is also provided with a sliding groove 29, and a circular groove 30 is provided on the middle side wall of the sliding groove 29; a square groove 10 is provided on the upper side of the connecting block 9; the switching shaft 26 and the positioning block 7 are rotatably connected, the upper end of the switching shaft 26 extends out of the housing 1, the lower end of the switching shaft 26 is provided with a switching plate 28, the switching plate 28 is located in the square groove 10, and the middle part of the switching shaft 26 is also provided with a boss 27, the boss 27 is located in the sliding groove, and the boss 27 is composed of an arc part and a cut part.

[0023] See Figure 1 , Figure 5 , Figure 7 , Figure 10 , Figure 11 When the cut surface on the boss 27 faces the circular groove 30, the two ends of the switching plate 28 are pressed against the inner walls of the left and right sides of the square groove 10, and the boss 27 can slide back and forth along the sliding groove 29. The connecting block 9 can be moved along the fixed block 7. When the arc part on the boss 27 is in contact with the inner wall of the circular groove 30, and the cut surface on the boss 27 faces the left or right side, the boss 27 is limited in the circular groove 30, the two ends of the switching plate 28 are pressed against the inner walls of the front and rear sides of the square groove 10, and the connecting block 9 can slide back and forth relative to the fixed block 7.

[0024] See Figures 1-3 , Figure 6 , Figure 8, Figure 9 The amplifier also includes a fixing plate 21; the connecting block 9 is provided with an upper wiring hole and a lower wiring hole, and the two terminals on the circuit board 32 are respectively located in the upper wiring hole and the lower wiring hole, and the terminals of the first wire harness 33 and the second wire harness 34 extend into the upper wiring hole and the lower wiring hole respectively; the fixing plate 21 is slidably connected to the connecting block 9 in the vertical direction, and the fixing plate 21 can reciprocate between the upper position and the lower position. The fixing plate 21 is provided with a plate pin 24, which is slidably connected to the inner wall groove assembly. The fixing plate 21 is also provided with an upper plate hole 22 and a lower plate hole 23.

[0025] See Figures 1-3 , Figure 6 , Figure 8 , Figure 9 When the fixing plate 21 is in the upper position, the plate pin 24 is located in the shallow flat groove 3, and the upper plate hole 22 and the lower plate hole 23 are offset from the upper wiring hole and the lower wiring hole, respectively. The fixing plate 21 limits the wiring terminals of the first wire harness 33 and the second wire harness 34 within the connecting block 9. When the fixing plate 21 is in the lower position, the plate pin 24 is located at the right end of the inclined groove 4, and the upper plate hole 22 and the lower plate hole 23 are aligned with the upper wiring hole and the lower wiring hole, respectively. The wiring terminals of the first wire harness 33 and the second wire harness 34 can be removed from the connecting block 9.

[0026] In this embodiment, when the fixing plate 21 is in the upper position, the upper plate hole 22 and the lower plate hole 23 are offset from the upper wiring hole and the lower wiring hole, respectively. The fixing plate 21 limits the wiring terminals of the first wire harness 33 and the second wire harness 34 within the connecting block 9. Since the connecting block 9 and the mounting bracket 5 are fixed together at this time, and the circuit board 32 is fixedly mounted on the mounting bracket 5, the electrical connection between the first wire harness 33 and the second wire harness 34 and the circuit board 32 will not loosen during vibration. When the fixing plate 21 is in the lower position, the plate pin 24 is located at the right end of the inclined groove 4, and the upper plate hole 22 and the lower plate hole 23 are aligned with the upper wiring hole and the lower wiring hole, respectively. The wiring terminals of the first wire harness 33 and the second wire harness 34 can be removed from the connecting block 9, making the connection and disconnection of the first wire harness 33 and the second wire harness 34 simple and convenient.

[0027] See Figure 2 , Figure 4 The amplifier also includes a connector 25; the connector 25 and the mounting bracket 5 are rotatably connected, the connector 25 presses on the circuit board 32 and limits its position, and the fan 31 is fixedly mounted on the connector 25.

[0028] The working principle of this ultra-high frequency response valve position closed-loop control amplifier is as follows: When the ultra-high frequency response valve is working, the valve core moves rapidly back and forth, causing the outer casing 1 to vibrate back and forth in the left and right directions. Because the arc portion on the boss 27 is in contact with the inner wall of the circular groove 30, the switching shaft 26 and the outer casing 1 cannot move relative to each other. Therefore, the switching shaft 26 connects the positioning block 7 and the outer casing 1. Since the two ends of the switching plate 28 are respectively pressed against the inner walls of the front and rear sides of the square groove 10, the connecting block 9 can move relative to the positioning block 7 in the left and right directions. Because the connecting block 9 is located between the two sets of damping components, it can be damped by the spring 8. At this time, the limiting plate 19 extends into the connecting... Within the groove 14, the T-head 6 is positioned within the connecting groove 14, fixing the mounting bracket 5 and the positioning block 7 together. The fixing plate 21 is positioned at the top, offsetting the upper plate hole 22 and the lower plate hole 23 from the upper and lower connecting holes. The connecting ends of the first wire harness 33 and the second wire harness 34 are fixed within the connecting block 9. The vibration damping effect of the spring 8 on the connecting block 9 is reduced, mitigating the impact of vibration on the circuit board 32 on the mounting bracket 5. Simultaneously, since the mounting bracket 5, the connecting ends of the first wire harness 33 and the second wire harness 34 are all connected to the connecting block 9, vibration will not affect the connection between the connecting ends of the first wire harness 33 and the second wire harness 34 and the circuit board 32, preventing loosening.

[0029] When the amplifier's internal circuit board 32 needs repair, first, rotate the switching shaft 26 90 degrees clockwise. Figure 11(In the middle), so that the cut surface of the boss 27 faces the circular groove 30. At the same time, due to the rotation of the switching plate 28, the two ends of the switching plate 28 are pressed against the inner walls of the left and right sides of the square groove 10, so that the connecting block 9 and the positioning block 7 are connected together. Then, the switching shaft 26 is pushed to the left, which drives the positioning block 7 and the connecting block 9 to move to the left together, so that the boss 27 moves to the left along the sliding groove 29. As the connecting block 9 moves to the left, it drives the plate pin 24 to move to the left along the shallow flat groove 3, and at the same time drives the control rod pin 16 to move to the left along the deep flat groove 2. When the control rod pin 16 moves to the left end of the deep flat groove 2, the connecting block 9 continues to move to the left. The telescopic cap 17 slides relative to the left inclined plane 12, pushing it against the telescopic spring 18 to retract. Simultaneously, the control rod 15 moves relative to the connecting block 9, causing the two limit plates 19 to move towards exiting the connecting groove 14 via the connecting rod 20. When the telescopic cap 17 passes the intersection of the left inclined plane 12 and the right inclined plane 13, it extends outward under the action of the telescopic spring 18. The right inclined plane 13 then pushes the control rod 15 relative to the connecting block 9. When the telescopic cap 17 touches the inner wall of the right side of the control groove 11, the control... When lever 15 stops relative to connecting block 9, lever 15 drives limit plate 19 to completely exit connecting groove 14 via connecting rod 20, and T-head 6 is released from its limit position. When boss 27 moves to the left end of sliding groove 29, connecting block 9 stops. At this time, the left end of mounting bracket 5 extends out of outer shell 1. Pulling mounting bracket 5 to the left allows removal of mounting bracket 5, circuit board 32, connecting bracket 25, and fan 31 mounted on connecting bracket 25. Since connecting bracket 25 and mounting bracket 5 are rotatably connected, rotating connecting bracket 25 exposes circuit board 32, allowing for quick disassembly and repair of circuit board 32. After maintenance, rotate the connecting bracket 25 so that it presses onto the circuit board 32 to limit its position. Then, insert the mounting bracket 5 and the connecting bracket 25 into the housing 1, so that the T-head 6 returns to the connecting groove 14 and the connecting ends of the first wire harness 33 and the second wire harness 34 are electrically connected to the circuit board 32. Then, push the mounting bracket 5 to the right, and push the connecting block 9 and the positioning block 7 to move to the right together. The boss 27 moves to the right along the sliding groove 29, driving the control lever pin 16 to move to the right along the deep flat groove 2, and at the same time driving the plate pin 24 to move to the right along the shallow flat groove 3.When the control lever pin 16 moves to the right end of the deep flat groove 2, the plate pin 24 enters the inclined groove 4, driving the fixed plate 21 to move downwards. The connecting block 9 continues to move to the right, causing the telescopic cap 17 to slide relative to the right inclined surface 13. The right inclined surface 13 pushes the telescopic cap 17 to overcome the telescopic spring 18 and retract. At the same time, due to the movement of the control lever 15 relative to the connecting block 9, the connecting rod 20 drives the two limiting plates 19 to extend into the connecting groove 14. When the telescopic cap 17 passes the intersection of the right inclined surface 13 and the left inclined surface 12, under the action of the telescopic spring 18, the telescopic cap 17 is pushed outwards. The left inclined surface 12 pushes the control lever 15 to move relative to the connecting block 9. When the control lever 15 drives the limiting plate 19 to press against the T-head 6, the control lever 15 moves relative to the connecting block 9. Stop at step 9. The T-head 6 is positioned within the connecting groove 14 by the limiting plate 19, fixing the mounting bracket 5 and connecting block 9 together. When the boss 27 moves to the right end of the sliding groove 29, the connecting block 9 stops. At this time, the plate pin 24 moves to the rightmost end of the inclined groove 4, and the fixing plate 21 moves to the lower position. Then, the switching shaft 26 is pushed to the left, causing the connecting block 9 to move to the left. When the boss 27 moves to the middle of the sliding groove 29, the plate pin 24 returns to the shallow flat groove 3, causing the fixing plate 21 to return to the upper position. The switching shaft 26 is rotated 90 degrees, so that the arc portion on the boss 27 fits against the inner wall of the circular groove 30. The two ends of the switching plate 28 are respectively pressed against the inner walls of the front and rear sides of the square groove 10, returning the amplifier to its initial state, completing the rapid installation of the circuit board 32 after maintenance.

[0030] When it is necessary to disconnect the first wiring harness 33 and the second wiring harness 34 from the circuit board 32, firstly, rotate the switching shaft 26 clockwise by 90 degrees. Figure 11In the middle section, the upper side of the boss 27 faces the circular groove 30, and the two ends of the switching plate 28 are pressed against the left and right inner walls of the square groove 10, fixing the connecting block 9 and the positioning block 7 together. Then, push the switching shaft 26 to the right, causing the positioning block 7 and the connecting block 9 to move to the right together, so that the boss 27 moves to the right along the sliding groove 29, the control lever pin 16 moves to the right along the deep flat groove 2, and the plate pin 24 moves to the right along the shallow flat groove 3. As the connecting block 9 moves to the right, when the plate pin 24 enters the inclined groove 4, the fixing is driven by the plate pin 24. Plate 21 moves downwards; when boss 27 moves to the right end of sliding groove 29, control rod pin 16 remains in deep flat groove 2, control rod 15 and connecting block 9 remain relatively stationary, limit plate 19 remains stationary, T-head 6 remains limited in connecting groove 14, at this time plate pin 24 moves to the rightmost end of inclined groove 4, fixing plate 21 moves to the lower position, aligning upper plate hole 22, lower plate hole 23 with upper wiring hole, lower wiring hole, and pulling outwards the first wire harness 33 and the second wire harness 34 can directly pull them out and disconnect the connection. Convenient and quick; when reconnection is required, the connecting ends of the first wire harness 33 and the second wire harness 34 need to be inserted into the upper wiring hole and the lower wiring hole respectively through the upper plate hole 22 and the lower plate hole 23, so that the connecting ends of the first wire harness 33 and the second wire harness 34 are electrically connected to the circuit board 32. Then, push the switching shaft 26 to the left, so that the boss 27 moves to the left along the sliding groove 29, which drives the connecting block 9 to move to the left, so that the control lever pin 16 moves to the left along the deep flat groove 2, and the plate pin 24 moves to the left along the inclined groove 4, which drives the fixing plate. Move 21 upwards to offset the upper plate hole 22 and lower plate hole 23 from the upper wiring hole and lower wiring hole. When the boss 27 moves to the middle of the sliding groove 29, the plate pin 24 returns to the shallow flat groove 3, driving the fixing plate 21 back to the upper position, fixing the connection ends of the first wire harness 33 and the second wire harness 34 in the connecting block 9. Then, rotate the switching shaft 26 90 degrees to make the arc part on the boss 27 fit with the inner wall of the circular groove 30, so that the amplifier returns to the initial state, completing the quick connection of the first wire harness 33 and the second wire harness 34.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-frequency response valve position closed-loop control amplifier, comprising a housing (1), a circuit board (32), a fan (31), a first wiring harness (33), and a second wiring harness (34), wherein the circuit board (32) is located inside the housing (1); the fan (31) is located inside the housing (1) for heat dissipation of the circuit board (32); the connection ends of the first wiring harness (33) and the second wiring harness (34) are both electrically connected to the circuit board (32); characterized in that, It also includes a fixing block (7), a connecting block (9), a limiting plate (19), and a mounting bracket (5). The fixing block (7) is located inside the outer shell (1) and is selectively connected to the outer shell (1). A set of shock-absorbing components is provided on the left and right sides of the fixing block (7). The shock-absorbing components include two springs (8). The connecting block (9) is located inside the fixing block (7) and is selectively connected to the fixing block (7). The connecting block (9) is located between the two sets of shock-absorbing components. A connecting groove (14) is provided on the left side of the connecting block (9). Two limiting plates (19) are provided, both of which are slidably disposed inside the connecting block (9). The two limiting plates (19) are located on the upper and lower sides of the connecting groove (14). The mounting bracket (5) is located inside the outer shell (1). The circuit board (32) is mounted on the mounting bracket (5). A T-shaped head (6) is provided on the right side of the mounting bracket (5). The T-shaped head (6) extends into the connecting groove (14). When the fixing block (7) and the outer shell (1) are connected together, the connecting block (9) and the fixing block (7) are disconnected, the limiting plate (19) extends into the connecting groove (14) and limits the T-head (6) in the connecting groove (14), so that the mounting bracket (5) and the connecting block (9) are connected together. When the fixing block (7) and the outer shell (1) are disconnected, the connecting block (9) and the fixing block (7) are connected together. When the connecting block (9) moves to the leftmost position, the limiting plate (19) is driven to exit the connecting groove (14), the T-head (6) is released from the limit, the mounting bracket (5) and the connecting block (9) are disconnected, and the mounting bracket (5) can exit the outer shell (1). When the connecting block (9) moves to the rightmost position, the limiting plate (19) extends into the connecting groove (14), the T-head (6) is limited in the connecting groove (14), and the mounting bracket (5) and the connecting block (9) are connected together.

2. The ultra-high frequency response valve position closed-loop control amplifier according to claim 1, characterized in that: The amplifier also includes a control lever (15); The connecting block (9) is provided with a control groove (11); The outer shell (1) is provided with an inner wall groove group, which includes a deep flat groove (2), a shallow flat groove (3) and an inclined groove (4) connected in sequence. The deep flat groove (2) is deeper than the shallow flat groove (3). The control rod (15) is slidably disposed in the control groove (11) in the left and right direction. The control rod (15) is provided with a control rod pin (16), and the control rod pin (16) and the deep flat groove (2) are slidably connected.

3. The ultra-high frequency response valve position closed-loop control amplifier according to claim 2, characterized in that: The amplifier also includes a driver component; The drive assembly is provided in two sets, which are respectively located on the upper and lower sides of the control rod (15); the drive assembly includes a telescopic cap (17), a telescopic spring (18) and a connecting rod (20). The control groove (11) has control surface groups on its upper and lower inner walls respectively, and the control surface groups include a left inclined surface (12) and a right inclined surface (13). The telescopic cap (17) is slidably connected to the control rod (15); The telescopic spring (18) is located inside the telescopic cap (17) and is used to drive the telescopic cap (17) to move toward the control surface assembly; One end of the connecting rod (20) is hinged to the control rod (15), and the other end is hinged to the limiting plate (19).

4. The ultra-high frequency response valve position closed-loop control amplifier according to claim 3, characterized in that: The amplifier also includes a switching shaft (26); The outer shell (1) is also provided with a sliding groove (29), and a circular groove (30) is provided on the middle side wall of the sliding groove (29). The upper side of the connecting block (9) is provided with a square groove (10); The switching shaft (26) and the positioning block (7) are rotatably connected. The upper end of the switching shaft (26) extends out of the outer shell (1). The lower end of the switching shaft (26) is provided with a switching plate (28). The switching plate (28) is located in the square groove (10). The middle part of the switching shaft (26) is also provided with a boss (27). The boss (27) is located in the sliding groove. The boss (27) is composed of an arc part and a cut part.

5. The ultra-high frequency response valve position closed-loop control amplifier according to claim 4, characterized in that: When the cut surface faces the circular groove (30), the two ends of the switching plate (28) abut against the inner walls of the left and right sides of the square groove (10), and the boss (27) can slide back and forth along the sliding groove (29). The connecting block (9) can be driven to move along the fixed block (7). When the arc part is in contact with the inner wall of the circular groove (30), and the cut surface on the boss (27) faces the left or right side, the boss (27) is limited in the circular groove (30), and the two ends of the switching plate (28) abut against the inner walls of the front and rear sides of the square groove (10). The connecting block (9) can slide back and forth relative to the fixed block (7).

6. The ultra-high frequency response valve position closed-loop control amplifier according to claim 5, characterized in that: The amplifier also includes a mounting plate (21); The connecting block (9) is provided with an upper wiring hole and a lower wiring hole. The two terminals on the circuit board (32) are located in the upper wiring hole and the lower wiring hole respectively. The terminals of the first wire harness (33) and the second wire harness (34) extend into the upper wiring hole and the lower wiring hole respectively. The fixing plate (21) is slidably connected to the connecting block (9) in the vertical direction. The fixing plate (21) can move back and forth between the upper and lower positions. The fixing plate (21) is provided with a plate pin (24). The plate pin (24) is slidably connected to the inner wall groove group. The fixing plate (21) is also provided with an upper plate hole (22) and a lower plate hole (23).

7. The ultra-high frequency response valve position closed-loop control amplifier according to claim 6, characterized in that: When the fixing plate (21) is in the upper position, the plate pin (24) is located in the shallow flat groove (3), the upper plate hole (22) and the lower plate hole (23) are respectively offset from the upper wiring hole and the lower wiring hole, and the fixing plate (21) limits the wiring ends of the first wire harness (33) and the second wire harness (34) in the connecting block (9); when the fixing plate (21) is in the lower position, the plate pin (24) is located at the right end of the inclined groove (4), the upper plate hole (22) and the lower plate hole (23) are respectively aligned with the upper wiring hole and the lower wiring hole, and the wiring ends of the first wire harness (33) and the second wire harness (34) can be withdrawn from the connecting block (9).

8. The ultra-high frequency response valve position closed-loop control amplifier according to claim 1, characterized in that: The amplifier also includes a connecting bracket (25); The connecting frame (25) and the mounting frame (5) are rotatably connected. The connecting frame (25) presses on the circuit board (32) and limits its position. The fan (31) is fixedly mounted on the connecting frame (25).

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