A hydraulic valve block assembly for a hydraulic servo system

Abstract

This invention relates to the field of hydraulic valve block technology and discloses a hydraulic valve block assembly for a hydraulic servo system, including a hydraulic valve block body and pipe joints. The surface of the hydraulic valve block body is provided with multiple pipe interfaces and multiple component interfaces. Each pipe interface and component interface is provided with a protective device. In this invention, by setting the protective device, the oil pipes and various components on the hydraulic valve block body will lose their squeezing of the drive component during disassembly. The drive component will drive the shaft, fixed block and conical segment to rotate, so that multiple sets of conical segments come into contact with each other to achieve closure. At the same time, the elastic ring will also reset and fit tightly against multiple conical segments to achieve a sealing effect. After the oil pipes and various components are disassembled, the connection between the external environment and the internal oil circuit of the valve block can be quickly blocked at the moment the disassembly action is completed, effectively preventing dust, metal debris and other impurities from entering.

Description

Technical Field

[0001] This invention relates to the field of hydraulic valve block technology, specifically a hydraulic valve block assembly for a hydraulic servo system. Background Technology

[0002] A hydraulic servo system is a closed-loop system that uses hydraulic fluid to achieve precise control. Its core is to precisely adjust mechanical motion through the coordination of electrical signals and hydraulic power. Its working principle is as follows: the sensor detects the output quantity (such as displacement, speed, etc.) in real time and feeds it back to the controller. The output quantity is compared with the input signal and a deviation is generated. This deviation is amplified and drives the hydraulic control valve to control the flow, pressure and direction of the hydraulic oil, thereby driving the hydraulic cylinder or hydraulic motor to move, so that the controlled object moves according to the expected pattern.

[0003] The hydraulic valve block in a hydraulic servo system is a key component in an electro-hydraulic servo hydraulic control system. It plays a role in controlling the flow of hydraulic oil. It is a small circuit that brings together various required valves through oil holes on the valve block. The motor drives the oil pump to rotate, converting mechanical energy into the pressure energy of hydraulic oil. After the hydraulic oil passes through the hydraulic valve block and the hydraulic valves regulate the direction, pressure, and flow, it is transmitted to the cylinder or oil motor of the hydraulic machinery through external pipelines. This, in turn, controls the direction, force, and speed of the hydraulic motor, thus driving the hydraulic machinery to perform work.

[0004] An existing invention, such as the one with patent publication number CN116696879B, discloses a hydraulic valve block assembly, including a hydraulic valve block body. The hydraulic valve block body is provided with several pipe connection ports and several valve mounting ports. A spring and a pipe positioning component are arranged from the inside to the outside of each pipe connection port. The pipe positioning component includes a connecting part, several arc-shaped elastic parts, and a barb part. The several arc-shaped elastic parts have converging parts with gradually decreasing spacing from the connecting part to the barb part. A compression ring is provided inside the pipe connection port, and the inner wall of the compression ring is provided with guide grooves that match the several converging parts. A pressure driving mechanism is also provided inside the pipe connection port. The movable end of the pressure driving mechanism is connected to the connecting part by a connecting rod. An inwardly extending convex ring is provided at the pipe end, and a limiting hole matching the barb part is provided on the convex ring. This hydraulic valve block assembly can prevent the disassembly of hydraulic pipes without depressurization, avoid unnecessary hydraulic oil splashing and waste, improve the safety of the hydraulic valve block, and solve the problem.

[0005] In existing technologies, hydraulic valve blocks are assembled with oil pipes and various components. However, once the oil pipes or other components are disassembled during subsequent maintenance or replacement, the interface parts on the surface of the hydraulic valve block will be directly exposed to the external environment. If effective sealing measures are not taken in time, external dust, particles and other impurities will take the opportunity to invade the interior of the hydraulic valve block. The entry of these impurities will not only contaminate the hydraulic oil, but may also cause wear or blockage to the hydraulic valve block and its related components, thereby seriously affecting the normal operation of the hydraulic system.

[0006] Therefore, we propose a hydraulic valve block assembly for a hydraulic servo system. Summary of the Invention

[0007] (a) Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this invention provides a hydraulic valve block assembly for a hydraulic servo system, which solves the problem that once existing hydraulic valve blocks, whether oil pipes or other components, are disassembled during subsequent maintenance or replacement, the interface portion on the surface of the hydraulic valve block will be directly exposed to the external environment.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic valve block assembly for a hydraulic servo system, comprising a hydraulic valve block body and a pipeline connector. The surface of the hydraulic valve block body is provided with multiple pipeline interfaces and multiple component interfaces. Each pipeline interface and component interface is provided with a protective device. The protective device includes multiple connectors, each connector being threadedly connected to the inner wall of the pipeline interface and the component interface. A sealing gasket is fixedly connected to the surface of each connector. Multiple sets of shafts are rotatably connected to the inner wall of each connector. A fixing block is fixedly connected to each shaft. A tapered segment is fixedly connected to the surface of each fixing block. An elastic ring is fixedly connected to the inner wall of each connector. The inner side of the elastic ring is pressed against the surface of the multiple tapered segments, which merge and cooperate with the elastic ring to form a sealed space. A drive assembly for controlling the rotation of the shafts is provided on the connector. A threaded mounting hole for threaded connection with the pipeline connector is provided on the surface of the connector. A positioning assembly for positioning the drive assembly is provided on the connector.

[0011] Preferably, the drive assembly includes multiple slide rods slidably connected to the inner wall of the connector. The other end of each slide rod extends from the inner wall of the connector, and a rack is fixedly connected to the other end of each slide rod. A gear is fixedly connected to the surface of the shaft, and the gear meshes with the rack. A spring is sleeved on the surface of each slide rod, and both ends of the spring are fixedly connected to the slide rod and the inner wall of the connector, respectively. Through the above components, when the pipe connector is connected to the threaded mounting hole or when the interfaces in various components are aligned with the component interfaces, the slide rod will be squeezed. The slide rod drives the rack to move, and at the same time, the spring is squeezed and generates elastic force. When the rack moves, it can drive the shaft, the fixed block, and the conical blocks to rotate in conjunction with the gear. The multiple conical blocks unfold, and at the same time, the elastic ring deforms, thus opening the connector to allow liquid to pass through.

[0012] Preferably, the outer surface of the connector is provided with an external thread, and a threaded ring is threadedly connected to the surface of the external thread. A protrusion is fixedly connected to the surface of the slide rod, and a through hole is provided on the surface of the connector for the protrusion to slide. Through the above components, when manual opening is required, the threaded ring can be rotated. The threaded ring, in conjunction with the external thread, moves. During the movement, the threaded ring can push the protrusion, which drives the slide rod and rack to move. At the same time, the spring is compressed and generates elastic force. When the rack moves, it can drive the shaft, the fixed block, and the conical blocks to rotate in conjunction with the gear. The multiple conical blocks unfold, thus completing the manual operation. When closing, simply rotate the threaded ring to reset it. The spring drives the protrusion and slide rod to reset, thus closing the multiple conical blocks and sealing them with the elastic ring.

[0013] Preferably, the conical segment includes a block, and a rubber pad is fixedly connected to the outer surface of the block.

[0014] Preferably, the positioning component includes multiple threaded holes and multiple sliding holes formed in the inner wall of the connector. The threaded holes are connected to the sliding holes. A threaded rod is threadedly connected to the inner wall of the threaded hole, and a positioning pin is slidably connected to the inner wall of the sliding hole. One end of the threaded rod is rotatably connected to the upper end of the positioning pin. The surface of the sliding rod is provided with a positioning groove for the positioning pin to be inserted. With the above components, when it is necessary to position the sliding rod in the drive assembly, the threaded rod can be rotated. The threaded rod, in conjunction with the threaded hole, drives the positioning pin to move in the inner wall of the sliding hole. The positioning pin can be inserted into the positioning groove on the surface of the sliding rod to achieve positioning of the sliding rod, reduce accidental collisions, and prevent the sliding rod from moving and causing the conical segment to unfold.

[0015] Preferably, an elastic sheet is fixedly connected to the surface of the fixing block, and the four sides of the elastic sheet are fixedly connected to the inner wall of the connector. Through the above components, when the fixing block rotates on the shaft, the elastic sheet can deform accordingly to seal the drive component.

[0016] Preferably, the elastic ring is a high-performance elastomer material made of fluorosilicone rubber.

[0017] Preferably, a detachable sealing component is also provided in the threaded mounting hole. The sealing component includes a sealing cap, and the surface of the sealing cap is provided with an external thread. The external thread is threadedly connected to the threaded mounting hole. With the above component, when it is necessary to completely seal the pipeline interface or component interface, the external thread on the surface of the sealing cap can be threadedly connected to the threaded mounting hole, thereby realizing the sealing operation of the connector.

[0018] Preferably, the surface of the sealing cover is provided with a groove. Through the above-mentioned components, when the sealing cover is connected to the threaded mounting hole, the groove can prevent the sealing cover from contacting the slide rod.

[0019] Preferably, an auxiliary block is fixedly connected to the outer surface of the sealing cap. The auxiliary block is in the shape of a regular hexagon. Through the above-mentioned components, the regular hexagonal auxiliary block is easy to cooperate with the tool, so that the sealing cap can be tightened and the sealing effect can be improved.

[0020] In summary, the technical effects and advantages of this invention are as follows:

[0021] 1. In this invention, by setting up a protective device, the oil pipes and various components on the hydraulic valve block body will lose their squeezing of the drive component during disassembly. The drive component will drive the shaft, fixed block and conical segment to rotate, so that multiple sets of conical segments will contact each other to achieve closure. At the same time, the elastic ring will also reset and tightly fit on multiple conical segments to achieve a sealing effect. After the oil pipes and various components are disassembled, the connection between the external environment and the internal oil circuit of the valve block can be quickly blocked at the moment the disassembly action is completed. This effectively isolates the entry of impurities such as dust and metal shavings, reduces the wear and jamming of hydraulic components caused by contamination, and provides reliable protection for the precision oil circuit inside the hydraulic valve block.

[0022] 2. In this invention, the conical segment is composed of a block and a rubber pad. The block provides structural support and rotational stiffness, while the rubber pad is elastic and can fit tightly against the surface of adjacent segments when the conical segment is closed, filling tiny gaps and forming a tighter sealing surface.

[0023] 3. In this invention, by rotating the threaded ring and engaging the external thread on the surface of the connector, the threaded ring can move axially and press and push the protrusion. The protrusion drives the slide bar and rack to move, thereby enabling the manual opening of multiple tapered sections and improving overall flexibility.

[0024] 4. In this invention, by setting a positioning component, the positioning pin is precisely inserted into the positioning groove of the slide bar through the cooperation of the threaded rod and the threaded hole, which can reduce the problem of accidental contact with the slide bar, causing the conical segment to unfold and affecting the protective effect.

[0025] 5. In this invention, by setting a sealing component, when the hydraulic valve block body is not used for a long time, the external thread on the surface of the sealing cover can be threadedly connected to the threaded mounting hole, thereby completing the sealing operation of the connector and further improving the overall sealing effect. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a hydraulic valve block assembly for a hydraulic servo system according to the present invention;

[0027] Figure 2 This is a schematic diagram of the hydraulic valve block body structure of a hydraulic valve block assembly for a hydraulic servo system according to the present invention.

[0028] Figure 3 This is a schematic diagram of the protective device structure for a hydraulic valve block assembly used in a hydraulic servo system according to the present invention.

[0029] Figure 4 This is a schematic diagram of another perspective of the protective device for a hydraulic valve block assembly for a hydraulic servo system according to the present invention.

[0030] Figure 5 This is a cross-sectional structural schematic diagram of a protective device for a hydraulic valve block assembly in a hydraulic servo system according to the present invention.

[0031] Figure 6 This invention relates to a hydraulic valve block assembly for a hydraulic servo system. Figure 5 Schematic diagram of the structure at point A in the middle;

[0032] Figure 7 This is a partial structural schematic diagram of a protective device for a hydraulic valve block assembly used in a hydraulic servo system according to the present invention.

[0033] Figure 8 This is a schematic diagram of the conical block cross-sectional structure in the protective device of the hydraulic valve block assembly for a hydraulic servo system according to the present invention.

[0034] Figure 9 This is a schematic diagram of the drive component of a hydraulic valve block assembly for a hydraulic servo system according to the present invention.

[0035] Figure 10 This is a schematic diagram of the sealing component structure of a hydraulic valve block assembly for a hydraulic servo system according to the present invention;

[0036] Figure 11 This invention relates to a hydraulic valve block assembly for a hydraulic servo system. Figure 10 Another perspective structural diagram.

[0037] In the diagram: 1. Hydraulic valve block body; 2. Pipe joint; 3. Protective device; 31. Connector; 32. Elastic ring; 33. Shaft; 34. Fixing block; 35. Drive assembly; 351. Slide rod; 352. Spring; 353. Rack; 354. Gear; 355. Threaded ring; 356. External thread one; 357. Protrusion; 36. Conical segment; 361. Block; 362. Rubber pad; 37. Threaded mounting hole; 38. Sealing gasket; 39. Elastic sheet; 310. Positioning assembly; 3101. Threaded hole; 3102. Threaded rod; 3103. Sliding hole; 3104. Positioning pin; 3105. Positioning groove; 311. Sealing cover; 312. Auxiliary block; 313. External thread two; 314. Groove; 4. Pipe interface; 5. Component interface. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] refer to Figure 1 - Figure 11 The hydraulic valve block assembly for a hydraulic servo system shown includes a hydraulic valve block body 1 and a pipe connector 2. The surface of the hydraulic valve block body 1 is provided with multiple pipe interfaces 4 and multiple component interfaces 5. Each pipe interface 4 and component interface 5 is provided with a protective device 3.

[0040] The protective device 3 includes multiple connectors 31, which are threadedly connected to the inner walls of the pipe interface 4 and the component interface 5, respectively. A sealing gasket 38 is fixedly connected to the surface of each connector 31. Multiple sets of shafts 33 are rotatably connected to the inner wall of each connector 31. A fixing block 34 is fixedly connected to each shaft 33. Conical segments 36 are fixedly connected to the surface of each fixing block 34. An elastic ring 32 is fixedly connected to the inner wall of each connector 31. The inner side of the elastic ring 32 is pressed against the surface of the multiple conical segments 36, and the multiple conical segments 36 are combined with the elastic ring 32 to form a shape. The sealed space is formed. The elastic ring 32 is made of high-performance fluorosilicone rubber elastomer material. The conical block 36 includes a block 361. A rubber pad 362 is fixedly connected to the outer surface of the block 361. A drive assembly 35 that can control the rotation of the shaft 33 is provided on the connector 31. A threaded mounting hole 37 that can be threadedly connected to the pipe connector 2 is opened on the surface of the connector 31. A positioning assembly 310 that can position the drive assembly 35 is provided on the connector 31. An elastic sheet 39 is fixedly connected to the surface of the fixing block 34. The four sides of the elastic sheet 39 are fixedly connected to the inner wall of the connector 31.

[0041] The drive assembly 35 includes multiple slide rods 351 that are slidably connected to the inner wall of the connector 31. The other end of each slide rod 351 extends from the inner wall of the connector 31. A rack 353 is fixedly connected to the other end of each slide rod 351. A gear 354 is fixedly connected to the surface of the shaft 33. The gear 354 meshes with the rack 353. A spring 352 is sleeved on the surface of each slide rod 351. The two ends of the spring 352 are fixedly connected to the slide rod 351 and the inner wall of the connector 31, respectively. An external thread 356 is provided on the outer surface of the connector 31. A threaded ring 355 is threadedly connected to the surface of the external thread 356. A protrusion 357 is fixedly connected to the surface of each slide rod 351. A through hole for the protrusion 357 to slide is provided on the surface of the connector 31.

[0042] In this embodiment: when the pipe connector 2 is connected to the threaded mounting hole 37, or when the interface in various components is aligned with the component interface 5, the slide rod 351 will be squeezed. The slide rod 351 drives the rack 353 to move. At the same time, the spring 352 is squeezed and generates elastic force. When the rack 353 moves, it cooperates with the gear 354 to drive the shaft 33, the fixed block 34 and the conical segment 36 to rotate. The multiple conical segments 36 unfold, and at the same time, they drive the elastic ring 32 to deform, thus opening the connector 31 to allow liquid to pass through. When manual opening is required, the threaded ring 355 can be rotated. The threaded ring 355 engages with the external thread 356. During the movement, the threaded ring 355 can push the protrusion 357, which in turn drives the slide bar 351 and rack 353 to move. At the same time, the spring 352 is compressed and generates elastic force. When the rack 353 moves, it works with the gear 354 to drive the shaft 33, the fixed block 34, and the conical blocks 36 to rotate. The multiple conical blocks 36 unfold, thus completing the manual operation. When closing, simply rotate the threaded ring 355 to reset it. The spring 352 drives the protrusion 357 and slide bar 351 to reset, thus closing the multiple conical blocks 36 and sealing them with the elastic ring 32.

[0043] The positioning component 310 includes multiple threaded holes 3101 and multiple sliding holes 3103 formed in the inner wall of the connector 31. The threaded holes 3101 and the sliding holes 3103 are connected. A threaded rod 3102 is threadedly connected to the inner wall of the threaded hole 3101. A positioning post 3104 is slidably connected to the inner wall of the sliding hole 3103. One end of the threaded rod 3102 is rotatably connected to the upper end of the positioning post 3104. A positioning groove 3105 is formed on the surface of the sliding rod 351 for the positioning post 3104 to be inserted.

[0044] In this embodiment: when it is necessary to position the slide bar 351 in the drive assembly 35, the threaded rod 3102 can be rotated. The threaded rod 3102, in conjunction with the threaded hole 3101, drives the positioning pin 3104 to move within the inner wall of the slide hole 3103. The positioning pin 3104 can be inserted into the positioning groove 3105 on the surface of the slide bar 351 to position the slide bar 351, reducing accidental collisions and preventing the slide bar 351 from moving and causing the conical block 36 to unfold.

[0045] The threaded mounting hole 37 is also equipped with a detachable sealing component, which includes a sealing cover 311. The surface of the sealing cover 311 is provided with an external thread 313, which is threadedly connected to the threaded mounting hole 37. The surface of the sealing cover 311 is provided with a groove 314, and an auxiliary block 312 is fixedly connected to the outer surface of the sealing cover 311. The auxiliary block 312 is in the shape of a regular hexagon.

[0046] In this embodiment: when it is necessary to completely seal the pipeline interface 4 or component interface 5, the external thread 313 on the surface of the sealing cover 311 is threadedly connected to the threaded mounting hole 37. During the connection process, the groove 314 on the sealing cover 311 ensures that the sealing cover 311 will not come into contact with the slide rod 351. In addition, the sealing cover 311 is also provided with a regular hexagonal auxiliary block 312. This design facilitates operation with appropriate tools, so that the sealing cover 311 can be firmly tightened, which can effectively fix the sealing cover 311 on the threaded mounting hole 37, thereby realizing the complete sealing operation of the connector 31.

[0047] Working principle of this invention: In use, the connector 31 must first be securely installed in the pipe interface 4 and component interface 5 respectively. Initially, multiple tapered blocks 36 are tightly joined together, forming a complete tapered structure. These tapered blocks 36 cooperate with the elastic ring 32 to effectively achieve a sealing and interception effect, reducing the entry of impurities and dust. When connecting the pipe to various components, the tapered blocks 36 and elastic ring 32 can be lightly rinsed to ensure they are clean and free of impurities. Next, when connecting the pipe connector 2 to the threaded mounting hole 37, or aligning the interfaces of various components with the component interface 5, it is essential to ensure that they are pressed against the sealing gasket 38 to achieve a reliable sealing effect. Simultaneously, during the connection process, the pipe connector 2 and various components will apply a certain pressure to the slide rod 351. When compressed, the slide rod 351 will drive the rack 353 to move accordingly. At this time, the spring 352 will also be compressed and generate elastic force. As the rack 353 moves, the rack 353, in conjunction with the gear 354... Its function is to drive the shaft 33, the fixed block 34, and the conical blocks 36 to rotate synchronously. During rotation, the multiple conical blocks 36 gradually unfold, causing the elastic ring 32 to deform, gradually changing it from a closed state to an open state, facilitating smooth liquid flow. When the fixed block 34 rotates on the shaft 33, the elastic sheet 39 also deforms accordingly to seal the drive assembly 35. In this way, liquid can smoothly pass through this opened connection. Head 31 ensures that the hydraulic valve block body 1 can work normally. When the pipeline joint 2 or various components need to be removed, their squeezing effect on the slide rod 351 disappears, and the spring 352 releases its elastic force, driving the slide rod 351 and rack 353 to reset. Under the action of the gear 354, the rack 353 can drive the shaft 33 to rotate in the opposite direction, so that multiple sets of conical blocks 36 reclose. At the same time, the elastic ring 32 will also reset and fit tightly against multiple conical blocks 36, achieving a sealing effect again and effectively reducing the entry of dust and impurities.

[0048] When the slide bar 351 needs to be positioned, the operator can manually rotate the threaded rod 3102. The threaded rod 3102 and the threaded hole 3101 are tightly fitted together. The rotation of the threaded rod 3102 can effectively drive the positioning pin 3104 to move in the inner wall of the sliding hole 3103. The positioning pin 3104 can be firmly inserted into the positioning groove 3105 on the surface of the slide bar 351, thereby ensuring that the slide bar 351 is fixed in the required position. This positioning mechanism can not only effectively reduce the accidental movement of the slide bar 351 caused by accidental collision, but also reduce the phenomenon of accidental unfolding of the conical block 36 caused by this, ensuring the stability and reliability of the entire protective assembly.

[0049] When the sealing part needs to be opened manually, the threaded ring 355 can be rotated. The threaded ring 355 moves in conjunction with the external thread 356. During the movement, the threaded ring 355 can push the protrusion 357. The protrusion 357 drives the slide rod 351 and the rack 353 to move. At the same time, the spring 352 is compressed and generates elastic force. When the rack 353 moves, it can drive the shaft 33, the fixed block 34 and the conical segment 36 to rotate in conjunction with the gear 354. The multiple conical segments 36 unfold, and the manual operation can be completed. When closing, simply rotate the threaded ring 355 to reset the threaded ring 355. The spring 352 drives the protrusion 357 and the slide rod 351 to reset, so that the multiple conical segments 36 can be closed and sealed in conjunction with the elastic ring 32.

[0050] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydraulic valve block assembly for a hydraulic servo system, comprising a hydraulic valve block body (1) and a pipe connector (2), wherein the surface of the hydraulic valve block body (1) is provided with a plurality of pipe interfaces (4) and a plurality of component interfaces (5), characterized in that: Both the pipeline interface (4) and the component interface (5) are equipped with protective devices (3); The protective device (3) includes multiple connectors (31), which are threaded to the inner walls of the pipeline interface (4) and the component interface (5) respectively. A sealing gasket (38) is fixedly connected to the surface of each connector (31). Multiple sets of shafts (33) are rotatably connected to the inner wall of each connector (31). A fixing block (34) is fixedly connected to each shaft (33). A tapered segment (36) is fixedly connected to the surface of each fixing block (34). An elastic ring is fixedly connected to the inner wall of each connector (31). The inner side of the elastic ring body (32) is pressed against the surface of multiple conical blocks (36), and the multiple conical blocks (36) are combined with the elastic ring body (32) to form a sealed space. The connector (31) is provided with a drive assembly (35) that can control the rotation of the shaft (33). The surface of the connector (31) is provided with a threaded mounting hole (37) that can be threadedly connected to the pipe connector (2). The connector (31) is provided with a positioning assembly (310) that can position the drive assembly (35). The drive assembly (35) includes a plurality of slide rods (351) slidably connected to the inner wall of the connector (31). The other end of each slide rod (351) extends out from the inner wall of the connector (31). A rack (353) is fixedly connected to the other end of each slide rod (351). A gear (354) is fixedly connected to the surface of the shaft (33). The gear (354) meshes with the rack (353). A spring (352) is sleeved on the surface of each slide rod (351). The two ends of the spring (352) are fixedly connected to the slide rod (351) and the inner wall of the connector (31), respectively. The outer surface of the connector (31) is provided with an external thread (356), and the surface of the external thread (356) is threadedly connected with a threaded ring (355). The surface of the slide rod (351) is fixedly connected with a protrusion (357), and the surface of the connector (31) is provided with a through hole for the protrusion (357) to slide. The positioning component (310) includes multiple threaded holes (3101) and multiple sliding holes (3103) formed in the inner wall of the connector (31). The threaded holes (3101) are connected to the sliding holes (3103). A threaded rod (3102) is threadedly connected to the inner wall of the threaded hole (3101). A positioning post (3104) is slidably connected to the inner wall of the sliding hole (3103). One end of the threaded rod (3102) is rotatably connected to the upper end of the positioning post (3104). A positioning groove (3105) for the positioning post (3104) to be inserted is formed on the surface of the sliding rod (351).

2. The hydraulic valve block assembly for a hydraulic servo system according to claim 1, characterized in that: The conical block (36) includes a block (361), and a rubber pad (362) is fixedly connected to the outer surface of the block (361).

3. The hydraulic valve block assembly for a hydraulic servo system according to claim 1, characterized in that: An elastic sheet (39) is fixedly connected to the surface of the fixing block (34), and the four sides of the elastic sheet (39) are fixedly connected to the inner wall of the connector (31).

4. A hydraulic valve block assembly for a hydraulic servo system according to claim 1, characterized in that: The elastic ring (32) is a high-performance elastomer material of fluorosilicone rubber.

5. A hydraulic valve block assembly for a hydraulic servo system according to claim 1, characterized in that: The threaded mounting hole (37) is also provided with a detachable sealing component, which includes a sealing cap (311). The surface of the sealing cap (311) is provided with an external thread (313), which is threadedly connected to the threaded mounting hole (37).

6. A hydraulic valve block assembly for a hydraulic servo system according to claim 5, characterized in that: The surface of the sealing cap (311) is provided with a groove (314).

7. A hydraulic valve block assembly for a hydraulic servo system according to claim 5, characterized in that: An auxiliary block (312) is fixedly connected to the outer surface of the sealing cap (311), and the auxiliary block (312) is arranged in a regular hexagon.

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