Test block structure, test tool of hydraulic valve and disassembly tool of hydraulic valve

Abstract

The invention provides a test block structure, a test tool of a hydraulic valve and a disassembly tool of the hydraulic valve, the test block structure is used for testing the hydraulic valve, the test block structure comprises a test block, the end part of the test block is provided with a first groove, the bottom wall of the first groove extends outwards to form a boss, and the bottom wall of the first groove extends outwards to form a second groove; a first mounting hole is formed in the boss, at least part of the hydraulic valve is matched with the first mounting hole, and a plurality of liquid passing openings are formed in the side part of the test block. The end part of the test block is provided with the first groove and the boss, and the gap is formed between the first groove and the boss, so that when the valve body and the valve sleeve of the hydraulic valve are dismounted, the gap provides a working space for a dismounting tool, and the dismounting work is convenient; the invention provides a scheme for improving the test reliability, the assembling and disassembling portability and the appearance integrity of the hydraulic valve, and provides a guarantee for the qualified rate of hydraulic valve products.

Description

Technical Field

[0001] The present disclosure relates to the technical field of hydraulic valve test equipment, and in particular to a test block structure, a hydraulic valve test tool, and a hydraulic valve disassembly tool. Background Art

[0002] The high-speed switch valve is a hydraulic component controlled by a PWM signal. Due to its discrete output characteristics, it is widely used as a digital hydraulic component. As the size of high-speed switch valve products continues to shrink, product testing also faces many challenges. Among them, the installation and disassembly methods of the miniature high-speed switch valve during laboratory testing directly affect the final performance and form of the product. In the prior art, there are few means for testing and disassembly of miniature high-speed switch valves. They are usually fixed or pried apart in a relatively rough manner, resulting in a high rate of product damage. In addition, during the test assembly stage of the miniature high-speed switch valve, due to its small stroke of about 0.2mm, it is necessary to repeatedly disassemble and assemble to adjust the stroke to the target value. Therefore, during the test stage, the product often adopts a method in which the valve sleeve and the valve body (yoke iron) are not fixedly connected. In the prior art, removing the valve sleeve is likely to cause damage to the surface of the valve sleeve, affecting the product qualification rate. Summary of the invention

[0003] The present disclosure aims to at least solve the technical problems existing in the prior art that the surface of the valve body is easily damaged during testing, resulting in distortion of the test result, and the surface of the valve body and the valve sleeve is damaged by disassembly.

[0004] To this end, an object of the present disclosure is to propose a test block structure for testing a hydraulic valve, wherein the hydraulic valve comprises a valve body and a valve sleeve, and the test block structure comprises a test block, wherein a first groove is provided at an end of the test block, and a boss is extended outward from a bottom wall of the first groove, wherein a first mounting hole is provided on the boss, and at least a portion of the hydraulic valve cooperates with the first mounting hole, and a plurality of liquid ports are provided on a side of the test block.

[0005] In some embodiments, the depth of the groove is no greater than the height of the boss.

[0006] In some embodiments, a cross-sectional area of ​​the boss is smaller than a cross-sectional area of ​​the valve body.

[0007] In some embodiments, the hydraulic valve also includes a locating pin arranged on the valve body, and a second groove for accommodating the locating pin is provided on the test block, the second groove extends from a position close to the boss to an edge of the test block, and an extension length of the second groove is greater than a diameter of the locating pin.

[0008] In some embodiments, the boss has a first guide portion to cooperate with a disassembly mechanism to remove the valve sleeve.

[0009] Another object of the present disclosure is to provide a test fixture for a hydraulic valve, including the test block structure in some of the above-mentioned embodiments, the test fixture also including a fixed seat, a pressure cylinder and a first driving member, the fixed seat is connected to one end of the test block, the pressure cylinder is arranged inside the fixed seat, and the first driving member is arranged at one end of the fixed seat away from the test block to drive the pressure cylinder to slide in the fixed seat.

[0010] In some embodiments, the test tool further includes a limit member, a first sliding groove is provided on the side of the fixing seat, a second sliding groove corresponding to the first sliding groove is provided on the side of the pressing cylinder, and the limit member passes through the first sliding groove and the second sliding groove.

[0011] Another object of the present disclosure is to provide a disassembly tool for a hydraulic valve, which is used to disassemble the valve sleeve of the hydraulic valve, including the test block structure in some of the above-mentioned embodiments, the boss having a first guide portion, the disassembly tool also including a locking sleeve, and the locking sleeve is provided with a clamping portion cooperating with the valve sleeve and a second guide portion cooperating with the first guide portion.

[0012] In some embodiments, the first guide portion and the second guide portion are inclined surfaces.

[0013] In some embodiments, the disassembly tool further includes a second driving member and a second fastener, and the second driving member passes through the locking sleeve and is fixed by the second fastener.

[0014] The test block structure provided by the embodiment of the present disclosure has the following beneficial effects:

[0015] The end of the test block is provided with a first groove and a boss, and a gap is formed between the first groove and the boss. When the valve body and the valve sleeve of the hydraulic valve are disassembled, the setting of the gap provides a working space for the disassembly tool, facilitating the disassembly work;

[0016] When disassembling the valve body after testing the hydraulic valve, the setting of the gap can solve the problem of difficulty in placing the dismantling tool due to the lack of spacing between the end face of the valve body and the test block. At the same time, the dismantling tool dismantles the valve body along the gap, and the contact area between the dismantling tool and the valve body is small, resulting in less damage to the surface of the valve body.

[0017] When the valve sleeve is disassembled, the boss cooperates with the locking sleeve to solve the problem that the disassembly mechanism is difficult to place due to the small distance between the end face of the valve sleeve and the test block.

[0018] The test fixture of the hydraulic valve provided in the embodiment of the present disclosure has the following beneficial effects:

[0019] The first driving member is in indirect contact with the hydraulic valve through the pressure cylinder. The hydraulic valve is enclosed in the pressure cylinder. The pressure cylinder protects the hydraulic valve and avoids friction damage to the hydraulic valve, thereby effectively improving the integrity of the product appearance and the safety and reliability of the testing process.

[0020] The disassembly tool of the hydraulic valve provided in the embodiment of the present disclosure has the following beneficial effects:

[0021] The locking sleeve is wrapped around the outer circumference of the valve sleeve, and a boss is arranged on the test block to better apply force to the entire circumference of the valve sleeve end face, thereby avoiding damage to the valve sleeve due to disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 is a schematic structural diagram of a hydraulic valve in an embodiment of the present disclosure;

[0024] Figure 2 is a structural schematic diagram of a test block structure of a hydraulic valve in an embodiment of the present disclosure;

[0025] Figure 3 is a structural schematic diagram of a test fixture for a hydraulic valve in an embodiment of the present disclosure;

[0026] Figure 4 is a cross-sectional view of a test fixture of a hydraulic valve in an embodiment of the present disclosure;

[0027] Figure 5 yes Figure 4 A partial enlarged view of

[0028] Figure 6 is a three-dimensional diagram of a test block structure of a hydraulic valve in an embodiment of the present disclosure;

[0029] Figure 7 is a schematic diagram of a disassembly tool for a hydraulic valve in an embodiment of the present disclosure in use;

[0030] Figure 8 yes Figure 7 A partial enlarged view of .

[0031] Reference numerals:

[0032] 1. Test block; 11. First groove; 111. Bolt hole; 12. Boss; 121. First guide part; 13. First mounting hole; 14. Sealing sleeve; 141. Second through hole; 15. First sliding groove; 16. Second sliding groove; 17. Second groove; 18. First liquid outlet; 19. Second liquid outlet; 2. Fixed seat; 3. Pressing cylinder; 4. First driving member; 5. Limiting member; 6. Gap; 7. Locking sleeve; 71. Second mounting hole; 72. Clamping part; 73. Second guide part; 8. Second driving member; 9. Second fastener; 100. High-speed switch valve; 101. Valve body; 102. Valve sleeve; 103. First through hole; 104. Positioning pin; 105. Step part; 106. Ball; 107. Filter element. DETAILED DESCRIPTION

[0033] Various aspects and features of the present disclosure are described herein with reference to the drawings.

[0034] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0035] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0036] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the attached drawings.

[0037] It should also be understood that, although the present disclosure has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0038] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0039] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments claimed are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of ways with substantially any suitable detailed structure.

[0040] The first embodiment of the present disclosure provides a test fixture for a hydraulic valve, and a high-speed switch valve 100 in a hydraulic valve is used as an example for explanation (the structure of the high-speed switch valve is consistent with the Chinese patent with the announcement number CN215673845U and the patent name of a miniature low-power solenoid valve). Figure 1 As shown, the high-speed switch valve 100 includes a valve body 101, a valve sleeve 102 and a sealing sleeve 14. One end of the valve sleeve 102 is connected to the valve body 101, and the other end of the valve sleeve 102 is arranged outside the valve body 101. A filter element 107 is arranged at the end of the valve sleeve 102. A first through hole 103 is arranged on the periphery of the valve sleeve 102. A cavity is arranged in the valve sleeve 102, and a ball 106 is arranged in the cavity. In the initial state, the ball 106 is restricted in the valve sleeve 102 by the action of a spring. The sealing sleeve 14 is arranged outside the valve sleeve 102, and a positioning pin 104 is arranged at the end of the valve body 101. The test fixture includes a test block structure. The high-speed switch valve 100 is installed on the test block 1 of the test block structure for testing. After the test, the high-speed switch valve 100 is removed from the test block 1.

[0041] Among them, Figure 2-Figure 6 As shown, a first groove 11 is provided at the end of the test block 1, and a boss 12 is extended outward from the bottom wall of the first groove 11, and a first mounting hole 13 is provided on the boss 12. Before the test, the sealing sleeve 14 is installed in the first mounting hole 13, and then the high-speed switch valve 100 is installed on the test block 1. Specifically, the valve sleeve 102 is installed in the sealing sleeve 14, the valve body 101 and the boss 12 are in contact with each other, and the positioning pin 104 is extended into the test block 1 to position the high-speed switch valve 100.

[0042] The test fixture of the hydraulic valve also includes a fixed seat 2, a pressure cylinder 3 and a first driving member 4. The fixed seat 2 is connected to one end of the test block 1 having a boss 12, the pressure cylinder 3 is arranged inside the fixed seat 2, the valve body 101 of the high-speed switch valve 100 is arranged inside the pressure cylinder 3, and the first driving member 4 is arranged at one end of the fixed seat 2 away from the test block 1 to drive the pressure cylinder 3 to slide inside the fixed seat 2. During the test, the first driving member 4 drives the pressure cylinder 3 to move downward, the valve sleeve 102 generates an axial displacement in the test block 1, and a radial expansion and compression force is generated between the valve sleeve 102, the sealing sleeve 14 and the first mounting hole 13 to form a sealing structure. In this embodiment, the first driving member 4 indirectly contacts the high-speed switch valve 100 through the pressure cylinder 3, rather than directly contacting the high-speed switch valve 100. The pressure cylinder 3 plays a protective role for the high-speed switch valve 100. The high-speed switch valve 100 is wrapped in the pressure cylinder 3 to prevent the first driving member 4 from driving the high-speed switch valve 100 to move downward when in direct contact with the high-speed switch valve 100, thereby scratching the outer surface of the high-speed switch valve 100 and causing distortion of the test performance results, effectively improving the integrity of the product appearance and the safety and reliability of the test process. The first driving member 4 here is a nut, which is threadedly connected to the fixing seat 2. The high-speed switch valve 100 moves downward by screwing the nut, ensuring the smooth operation of the high-speed switch valve 100.

[0043] Furthermore, first sliding grooves 15 are provided on both sides of the test block 1, and second sliding grooves 16 corresponding to the first sliding grooves 15 are provided on the pressing cylinder 3, and the limiter 5 passes through the two first sliding grooves 15 (and also passes through the two second sliding grooves 16). When the first driving member 4 drives the pressing cylinder 3 to move, the pressing cylinder 3 can only move in the vertical direction and cannot rotate, so that the force applied to the pressing cylinder 3 by the first driving member 4 is borne by the limiter 5, that is, the limiter 5 replaces the positioning pin 104 to bear the torque caused thereby, so as to reduce the damage to the positioning pin 104. The limiter 5 here is a cylindrical rod-shaped structure, and the first sliding groove 15 and the second sliding groove 16 are set as waist-shaped grooves. The limiter 5 cooperates with the first sliding groove 15 and the second sliding groove 16, which is conducive to ensuring the stability of the driving operation of the limiter 5. In this way, the high-speed switch valve 100 is only subjected to pressure during the installation process, and is not subject to the shear force generated by the rotation of the thread. There is no force acting on the positioning pin 104 on the high-speed switch valve 100, thereby protecting the valve body 101 of the high-speed switch valve 100 from damage and solving the problems of the positioning pin 104 being unqualified, loose, or falling off after the test.

[0044] In the prior art, in order to ensure the positioning effect of the positioning pin 104, a positioning hole matching the size of the positioning pin 104 is provided on the test block 1. However, the above method requires that when the high-speed switch valve 100 is installed on the test block 1, the position of the high-speed switch valve 100 is constantly adjusted to align the positioning pin 104 with the positioning hole. In this embodiment, when the high-speed switch valve 100 is installed, a second groove 17 for accommodating the positioning pin 104 is provided on the test block 1. The second groove 17 extends from a position close to the boss 12 to the edge of the test block 1. The extension length of the second groove 17 is greater than the diameter of the positioning pin 104. In this way, during the process of installing the high-speed switch valve 100 on the test block 1, the positioning pin 104 extends into the second groove 17. Since the extension length of the second groove 17 is greater than the diameter of the positioning pin 104, the positioning pin 104 can automatically cooperate with the second groove 17, so that the positioning pin 104 and the second groove 17 can be quickly installed, so that there is no need for multiple adjustments. The size of the second groove 17 is limited by the size of the positioning pin 104 , that is, the outer wall of the positioning pin 104 needs to contact the groove wall of the second groove 17 to ensure that the positioning pin 104 has a positioning effect on the high-speed switching valve 100 during the test.

[0045] Furthermore, a first liquid port 18 and a second liquid port 19 are respectively provided on both sides of the test block 1, wherein the first liquid port 18 and the second liquid port 19 are sequentially provided along the height direction of the test block 1, for example: the first liquid port 18 is provided at the lower part of the test block 1, and the second liquid port 19 is provided at the upper part of the test block 1, the first liquid port 18 is communicated with the first mounting hole 13 through the first flow channel, and the second liquid port 19 is communicated with the first mounting hole 13 through the second flow channel. During product testing (for example, sealing performance testing), oil is introduced into the first liquid port 18, and the oil enters the first mounting hole 13 along the first flow channel. If oil is detected from the second liquid port 19 and the second flow channel, or oil seeps out from the upper surface of the boss 12, it means that the sealing performance of one position between the valve body 101 and the sealing sleeve 14 and the steel ball in the valve body 101 is unqualified.

[0046] In this embodiment, after the test is finished, the valve body removal tool of the high-speed switch valve 100 approaches the valve body 101 from the gap 6 formed between the boss 12 and the test block 1, and acts on the side where the valve body 101 and the valve sleeve 102 cooperate to remove the valve body 101. Compared with the valve body 101 of the high-speed switch valve 100 directly in close contact with the test block 1 without the gap 6, it is more convenient to remove the valve body 101, the action surface between the removal tool and the valve body 101 is smaller, and the damage to the surface of the valve body 101 is less. Among them, the cross-sectional area of ​​the boss 12 is smaller than the cross-sectional area of ​​the valve body 101 of the hydraulic valve, so that the valve body 101 of the high-speed switch valve 100 is not completely in contact with the upper surface of the test block 1, but part of its area is in contact with the test block 1 at the boss 12, and the other part of its area is suspended above the test block 1. When the valve body 101 of the high-speed switch valve 100 is removed, an operating space is reserved for the removal tool, and the operation is more convenient. The height of the boss 12 here is not lower than the height of the upper plane of the test block 1, and the gap 6 is formed on the upper surface of the test block 1 to facilitate the operation of the removal tool.

[0047] Furthermore, since the valve sleeve 102 of the high-speed switching valve needs to be pressed into the sealing sleeve 14 during the test, if the height of the boss 12 is set to be large, the stability of the high-speed switching valve 100 when moving toward the test block 1 will be affected, and the high-speed switching valve 100 may shake left and right. Therefore, in this embodiment, the height of the boss 12 is set to be relatively small (for example, 0.5-1 cm), and a first groove 11 is set on the test block 1. The boss 12 and the bottom wall of the first groove 11 jointly provide a working space for the removal tool, thereby ensuring the smooth operation of the high-speed switching valve 100 while providing sufficient working space for the removal tool.

[0048] The method of using the test fixture of the hydraulic valve of this embodiment is as follows:

[0049] S1: Install the pressing cylinder 3 inside the fixed seat 2, install the first driving member 4 on the end of the fixed seat 2, and install the limiting member 5 on the fixed seat 2 and the pressing cylinder 3 after passing through the first sliding groove 15 and the second sliding groove 16;

[0050] S2: Install the sealing sleeve 14 in the first mounting hole 13 of the test block 1, and connect the first through hole 103 (liquid inlet hole) on the outer periphery of the sealing sleeve 14, the second through hole 141 on the outer periphery of the sealing sleeve 14, and the second liquid port 19;

[0051] S3: The high-speed switch valve 100 is installed on the pressure cylinder 3, and then the fixing seat 2 is installed on the test block 1 through the first fastener (installed in the bolt hole 111 of the test block 1);

[0052] S4: the first driving member 4 drives the pressure cylinder 3 to move toward the test block 1, and the first driving member 4 drives the pressure cylinder 3 to move downward, the valve sleeve 102 generates axial displacement in the test block 1, and radial expansion and compression force is generated between the valve sleeve 102, the sealing sleeve 14 and the first mounting hole 13, and a sealing structure is formed between the valve sleeve 102 and the sealing sleeve 14;

[0053] S5: Introduce oil into the first liquid passage port 18 and observe the leakage at the second liquid passage port 19 and the boss 12.

[0054] The second embodiment of the present disclosure provides a disassembly tool for a hydraulic valve, which is described by taking a high-speed switch valve 100 in a hydraulic valve as an example. In the product test stage (e.g., sealing performance test), the sealing sleeve 14 is installed in the first mounting hole 13, and then the high-speed switch valve 100 is installed on the test block 1. Specifically, the valve sleeve 102 is installed in the sealing sleeve 14, the valve body 101 and the boss 12 are in contact with each other, and the positioning pin 104 extends into the test block 1 to position the high-speed switch valve 100. Among them, the valve body 101, the valve sleeve 102 and the sealing sleeve 103 are not fixedly connected together. After the product test is completed, after the valve body 101 is removed, the valve sleeve 102 needs to be removed separately from the boss 12 of the test block 1 by the disassembly tool of the hydraulic valve.

[0055] Among them, Figure 7 and Figure 8 As shown, the disassembly tool comprises a test block 1, a locking sleeve 7, a second driving member 8 and a second fastener 9. A first groove 11 is provided at the end of the test block 1, and a boss 12 is formed by extending outward from the bottom of the first groove 11. A first mounting hole 13 is provided on the boss 12. Two locking sleeves 7 are provided here, and the two locking sleeves 7 are butted against each other to surround the valve sleeve 102. A second mounting hole 71 is provided on each locking sleeve 7. After the second driving member 8 passes through the two second mounting holes 71, the two locking sleeves 7 are fixed to the valve sleeve 102 through the second fastener 9. The second driving member 8 here is a driving rod, which passes through the two locking sleeves 7, and then lifts the second driving member 8 upward to pull the valve sleeve 102 out of the test block 1 of the test tool, which is time-saving, labor-saving, convenient and quick. Furthermore, the locking sleeve 7 has an installation plane for installing the second fastener 9, and the second fastener 9 is arranged at the installation plane to ensure the connection reliability between the second fastener 9 and the locking sleeve 7 and the second driving member 8.

[0056] Further, each of the locking sleeves 7 is provided with a clamping portion 72, and the valve sleeve 102 has a step portion 105. The clamping portion 72 cooperates with the step portion 105 of the hydraulic valve sleeve 102. When the valve sleeve 102 is disassembled, the clamping portion 72 cooperates with the step portion 105, and the clamping portion 72 moves upward to drive the valve sleeve 102 to move out of the first mounting hole 13. In this embodiment, the clamping portion 72 and the step portion 105 are provided to cooperate with each other, and the contact area between the locking sleeve 7 and the valve sleeve 102 is small, and it is not easy to damage the outer surface of the valve sleeve 102.

[0057] Further, the boss 12 has a first guide portion 121 that cooperates with the disassembly mechanism, and the locking sleeve 7 has a second guide portion 73 that cooperates with the first guide portion 121. Here, the first guide portion 121 is a first inclined surface, and the second guide portion 73 is a second inclined surface. The first inclined surface is arranged from bottom to top, and the second inclined surface is arranged from top to bottom. When the locking sleeve 7 is installed, the first inclined surface and the second inclined surface can be gradually wedged to improve the reliability of the cooperation, and can play a guiding role when the locking sleeve 7 is installed.

[0058] The method of using the disassembly tool of the hydraulic valve of this embodiment is as follows:

[0059] S11: The clamping portion 72 of the locking sleeve 7 is connected to the step portion 105 of the valve sleeve 102, and the first guide portion 121 and the second guide portion 73 cooperate with each other to install the locking sleeve 7 on the outer side of the valve sleeve 102;

[0060] S12: Pass the second driving member 8 through the locking sleeve 7 and fix it with the second fastener 9;

[0061] S13: The second driving member 8 is lifted upward to move the valve sleeve 102 out from the boss 12 of the test block 1.

[0062] The third embodiment of the present disclosure provides a test block structure for testing a hydraulic valve (eg, a sealing performance test of a high-speed switching valve 100 and removal of the high-speed switching valve 100), such as Figure 1-Figure 6 As shown, the test block structure includes a test block 1, a first groove 11 is formed at the end of the test block 1, a boss 12 is extended outward from the bottom wall of the first groove 11, a first mounting hole 13 is formed on the boss 12, and a first liquid port 18 and a second liquid port 19 are provided on the side of the test block 1, and the first liquid port 18 and the second liquid port 19 are respectively connected to the first mounting hole 13 to provide a flow path for the oil for the sealing performance test.

[0063] The test block 1 is provided with a second groove 17 for accommodating the positioning pin 104 of the hydraulic valve, and the second groove 17 extends from a position close to the boss 12 to the edge of the test block 1, and the extension length of the second groove 17 is greater than the diameter of the positioning pin 104. This allows the positioning pin 104 to automatically cooperate with the second groove 17, thereby achieving rapid installation of the positioning pin 104 without multiple adjustments.

[0064] A first groove 11 is formed at the end of the test block 1, and a boss 12 is extended outward from the bottom of the first groove 11, and a gap 6 is formed between the boss 12 and the test block 1. The gap 6 is formed between the boss 12 and the test block 1, which provides a working space for the removal tools of the valve body 101 of the high-speed switching valve 100 and the removal tools of the valve sleeve 102 of the high-speed switching valve 100 for disassembly after the test. The setting of the gap 6 reduces the contact area between the removal tools and the valve body 101 (or the valve sleeve 102) during disassembly, and it is not easy to scratch the surface of the valve body 101 (or the valve sleeve 102).

[0065] Take the disassembly of the valve body 101 of the high-speed switching valve 100 as an example for explanation:

[0066] When the high-speed switch valve 100 needs to be removed from the boss 12 after the performance test of the high-speed switch valve 100, since a gap 6 is formed between the boss 12 and the bottom wall of the first groove 11, the removal tool approaches the valve body 101 from the gap 6, acts on the side where the valve body 101 and the valve sleeve 102 cooperate, and removes the valve body 101, which makes it more convenient to remove the valve body 101. The action surface between the removal tool and the valve body 101 is small, and the damage to the surface of the valve body 101 is small. Among them, the cross-sectional area of ​​the boss 12 is smaller than the cross-sectional area of ​​the valve body 101 of the hydraulic valve, so that the valve body 101 of the high-speed switch valve 100 is not completely in contact with the upper surface of the test block 1, but part of its area is in contact with the test block 1 at the boss 12, and the other part of its area is suspended above the test block 1. When the valve body 101 of the high-speed switch valve 100 is removed, a working space is reserved for the removal tool, and the operation is more convenient. The height of the boss 12 here is not lower than the height of the upper plane of the test block 1, and the gap 6 is formed on the upper plane of the test block 1 to facilitate the operation of the removal tool.

[0067] Take the disassembly of the valve sleeve 102 of the high-speed switching valve 100 as an example for explanation:

[0068] After the performance test of the high-speed switching valve 100 is performed, the valve body 101 is removed. Since the valve body 101 and the valve sleeve 102 are not fixedly connected together during the product testing stage (such as the sealing performance test), the valve sleeve 102 needs to be removed separately.

[0069] The boss 12 has a first guide portion 121 that cooperates with the disassembly mechanism, and the locking sleeve 7 has a second guide portion 73 that cooperates with the first guide portion 121. The first guide portion 121 here is a first inclined surface, and the second guide portion 73 is a second inclined surface. The first inclined surface is set from bottom to top, and the second inclined surface is set from top to bottom. When the locking sleeve 7 is installed, the first inclined surface and the second inclined surface can be gradually wedged to improve the reliability of the cooperation. At the same time, since the distance between the end surface of the valve sleeve 102 and the end surface of the boss 12 at the fitting position is small, the first inclined surface and the second inclined surface can play a guiding role.

[0070] In the description of the present disclosure, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0071] In the description of the present disclosure, "first feature" or "second feature" may include one or more of the features.

[0072] In the description of the present disclosure, “plurality” means two or more.

[0073] In the description of the present disclosure, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0074] In the description of the present disclosure, “on”, “over” and “above” a first feature of a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0075] In the description of the present disclosure, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0076] Although embodiments of the present disclosure have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A test block structure for testing a hydraulic valve, the hydraulic valve comprising a valve body and a valve sleeve, characterized in that: It comprises a test block, the end of which is provided with a first groove, a boss extending outward from the bottom wall of the first groove, a first mounting hole being provided on the boss, at least part of the hydraulic valve being matched with the first mounting hole, and a plurality of liquid ports being provided on the side of the test block.

2. The test block structure according to claim 1, characterized in that: The depth of the groove is not greater than the height of the boss.

3. The test block structure according to claim 1, characterized in that: The cross-sectional area of ​​the boss is smaller than the cross-sectional area of ​​the valve body.

4. The test block structure according to claim 2, characterized in that: The hydraulic valve also includes a locating pin arranged on the valve body, and a second groove for accommodating the locating pin is arranged on the test block. The second groove extends from a position close to the boss to an edge of the test block, and an extension length of the second groove is greater than a diameter of the locating pin.

5. The test block structure according to claim 3, characterized in that: The boss has a first guide portion for cooperating with a disassembly mechanism to remove the valve sleeve.

6. A test fixture for a hydraulic valve, characterized in that: The test tool comprises the test block structure described in any one of claims 1 to 4, wherein the test tool further comprises a fixed seat, a pressure cylinder and a first driving member, wherein the fixed seat is connected to one end of the test block, the pressure cylinder is arranged inside the fixed seat, and the first driving member is arranged at one end of the fixed seat away from the test block to drive the pressure cylinder to slide inside the fixed seat.

7. The test fixture for the hydraulic valve according to claim 6, characterized in that: The test fixture further includes a limiting member, a first sliding groove is arranged on the side of the fixing seat, a second sliding groove corresponding to the first sliding groove is arranged on the side of the pressing cylinder, and the limiting member passes through the first sliding groove and the second sliding groove.

8. A disassembly tool for a hydraulic valve, used for disassembling a valve sleeve of a hydraulic valve, characterized in that: The test block structure comprises the structure described in any one of claims 1, 2, 3 or 5, wherein the boss has a first guide portion, and the disassembly tool further comprises a locking sleeve, on which a clamping portion cooperating with the valve sleeve and a second guide portion cooperating with the first guide portion are provided.

9. The hydraulic valve disassembly tool according to claim 8, characterized in that: The first guide portion and the second guide portion are inclined surfaces.

10. The disassembly tool for the hydraulic valve according to claim 8, characterized in that: The disassembly tool further includes a second driving member and a second fastening member, and the second driving member passes through the locking sleeve and is fixed by the second fastening member.

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