Method and device for mounting a hydraulic mechanism connecting plate

Abstract

The present application relates to the field of hydraulic mechanism installation, and more particularly to a hydraulic mechanism connecting disc installation method and installation device. The hydraulic mechanism connecting disc installation method first preinstalls the connecting disc on the piston rod, then fixes the valve body and fixes the piston rod at the limit position, then fixes the positioning seat on one side of the piston rod and keeps the positioning surface and the reference surface of the valve body at a set distance, then reversely twists the connecting disc to make the connecting surface of the connecting disc closely adhere to the positioning surface. The positioning seat is provided, the positioning surface and the reference surface of the valve body are kept at a set distance, then the connecting disc is reversely twisted to make the connecting surface of the connecting disc closely adhere to the positioning surface, at this time the connecting disc is installed at the corresponding position, thereby solving the problems of low installation efficiency and axial movement of the piston rod leading to measurement error in the prior art.

Description

Technical Field

[0001] This invention relates to the field of hydraulic mechanism installation, and more particularly to a method and device for installing a hydraulic mechanism connecting plate. Background Technology

[0002] In a GIS circuit breaker, the moving and stationary contacts perform opening and closing operations. This means the moving contact needs to reciprocate linearly within the circuit breaker under the influence of a power source. The conventional design uses a hydraulic mechanism, where a piston rod drives the movement of the moving contact. To connect the circuit breaker to the hydraulic mechanism, a connecting plate is typically mounted on the piston rod. Specifically, for example... Figure 1 and Figure 2 As shown, a threaded connection section is typically provided at the end of the piston rod 12, and an internal threaded hole is provided on the connecting plate 13. The connecting plate 13 and the piston rod 12 are connected by a threaded connection. The connecting plate 13 is also provided with a mounting hole 131 for connecting to a circuit breaker. The piston rod 12 drives the movement of the connecting plate 13, which in turn drives the movement of the circuit breaker.

[0003] High precision is required for the movement of the moving and stationary contacts during opening and closing operations. Overtravel of the moving contact can damage the circuit breaker. Therefore, during design, manufacturing, and assembly, in addition to ensuring the movement accuracy of the piston rod in the hydraulic mechanism, the installation position of the connecting plate on the piston rod must also be guaranteed. Otherwise, the moving contact may fail to close completely during opening and closing operations, resulting in prolonged arcing time and difficulty in extinguishing the arc; if the moving contact overtravels during opening and closing operations, it may impact the stationary contact, causing damage. Figure 1 and Figure 2 As shown, in the prior art, during the installation of the connecting plate 13, the side of the valve body 11 that extends from the piston rod 12 is used as the reference surface 111, and the end face of the connecting plate 13 that is away from the valve body is used as the connecting surface 132. The piston rod 12 is compressed to the compression limit position, and then the connecting plate 13 is installed. After the installation is completed, the distance between the reference surface 111 and the connecting surface 132 is measured. If the distance between the reference surface 111 and the connecting surface 132 meets the requirements, it proves that the connecting plate is installed in place. Then, the nut 15 pre-installed on the piston rod 12 is turned so that the nut 15 moves toward the connecting plate 13, compressing the spring disc 14 between the two, and completing the locking of the connecting plate.

[0004] However, when installing the connecting plate in the above manner, in order to ensure the distance between the connecting surface and the reference surface, it is necessary to measure and rotate the connecting plate to connect the connecting plate and the piston rod at the same time. Often, it can only be installed in place after multiple measurements and movements, which is inconvenient. In addition, the piston rod and the valve body can also move relative to each other. During the installation process, the piston rod may move axially, causing the piston rod to no longer be at the compression limit position, resulting in inaccurate measurement results. Summary of the Invention

[0005] The purpose of this invention is to provide an installation method for a hydraulic mechanism connecting plate, which solves the problems in the prior art where the connecting plate needs to be installed and measured simultaneously, resulting in low installation efficiency due to multiple tightening operations and measurement errors caused by axial movement of the piston rod. The invention also aims to provide an installation device for a hydraulic mechanism connecting plate to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the installation method of the hydraulic mechanism connecting plate in this invention adopts the following technical solution:

[0007] A method for installing a hydraulic mechanism connecting plate involves first pre-installing the connecting plate on the piston rod, then fixing the valve body and the piston rod at their extreme positions. Next, a positioning seat with a positioning surface is fixed on one side of the piston rod, and a set distance is maintained between the positioning surface and the reference surface of the valve body. This set distance is the distance that should be maintained between the connecting surface of the connecting plate and the reference surface of the valve body when the piston rod is at its corresponding extreme position. Then, the connecting plate is rotated in the opposite direction to make the connecting surface of the connecting plate tightly adhere to the positioning surface.

[0008] The beneficial effects of the above technical solution are as follows: This invention innovatively proposes an installation method for a hydraulic mechanism connecting plate. First, the connecting plate is pre-installed on the piston rod. Then, the valve body is fixed and the piston rod is fixed at its limit position, so that the piston rod is in a fixed position during installation and the measurement distance will not change due to the axial movement of the piston rod, which facilitates the installation and positioning of the connecting plate. Then, a positioning seat with a positioning surface is fixedly set on one side of the piston rod to limit the position of the connecting plate to be installed. Since a set distance is maintained between the positioning surface and the reference surface of the valve body, which is the distance that should be maintained between the connecting surface of the connecting plate and the reference surface of the valve body when the piston rod is in the corresponding limit position, the position of the positioning surface at this time is the position that the connecting surface should be in after the connecting plate is installed. Then, the connecting plate is twisted in the opposite direction to make the connecting surface of the connecting plate fit tightly with the positioning surface. At this time, the connecting plate is installed in the corresponding position. In other words, this solution sets a positioning surface on the positioning seat and maintains the distance between the positioning surface and the reference surface of the valve body. This eliminates the need for repeated distance measurements when installing the connecting plate. Simply screw the connecting surface of the connecting plate onto the designated plane, and the distance will be automatically maintained. This solves the problems in the prior art where the connecting plate needs to be installed and measured simultaneously, resulting in low installation efficiency and axial movement of the piston rod leading to measurement errors.

[0009] Furthermore, before pre-installing the connecting plate, first pre-install the nut on the piston rod. After the connecting surface and the positioning surface of the connecting plate are in close contact, fix the connecting plate on the positioning seat with fasteners to prevent the connecting plate from rotating. Then, turn the nut in the opposite direction to press and fix the connecting plate on the piston rod.

[0010] The beneficial effects of the above technical solution are as follows: by pre-installing nuts, the piston rod installed in place is clamped and fixed, and by fasteners, the connecting plate installed in place is prevented from rotating, thus preventing the connecting plate from rotating before the nuts clamp the connecting plate.

[0011] To achieve the above objectives, the mounting device for the hydraulic mechanism connecting plate in this invention adopts the following technical solution:

[0012] An installation device for a hydraulic mechanism connecting plate includes a worktable and a valve body fixing structure fixedly mounted on the worktable for fixing a valve body. A positioning seat is fixedly mounted on the worktable or valve body fixing structure. A piston rod limiting structure is provided on the worktable, positioning seat, or valve body fixing structure for limiting the piston rod to keep it in an extreme position. The positioning seat has a positioning surface that is positioned toward and maintains a set distance from the reference surface of the valve body. The set distance is the distance that the connecting surface of the connecting plate and the reference surface of the valve body should maintain when the piston rod is in the corresponding extreme position.

[0013] The beneficial effects of the above technical solution are as follows: This invention innovatively proposes an installation device for a hydraulic mechanism connecting plate. By setting a workbench and a valve body fixing structure fixed on the workbench for fixing the valve body, the valve body is in a fixed state during installation, which facilitates distance control. By setting a piston rod limiting structure, the piston rod is placed in the extreme position. In addition, a positioning seat is set to limit the position of the connecting plate, so that during the installation process, separate components limit the positions of the valve body, piston rod and connecting plate, which facilitates the adjustment of the distance between the connecting surface and the reference surface. In other words, during installation, the connecting plate can be pre-installed on the piston rod first, then the valve body can be fixed on the valve body fixing structure, and then the positioning seat and piston rod limiting structure can be fixed to ensure that the piston rod is in its extreme position. During the installation of the connecting plate, no movement will occur. The connecting plate is rotated in the opposite direction to make the connecting surface and the positioning surface fit together. Since the positioning surface has a positioning surface that is set towards the reference surface of the valve body and maintains a set distance from it, the set distance is the distance that the connecting surface of the connecting plate and the reference surface of the valve body should maintain when the piston rod is in the corresponding extreme position. Therefore, the distance between the connecting surface and the reference surface of the valve body is the distance that should be maintained. That is to say, without repeated measurements, the connecting plate can be installed in place by relying on the positioning surface. In addition, since the piston rod is limited by the piston rod limiting structure during the tightening process, the piston rod is limited, thus solving the problems of low installation efficiency and measurement errors caused by multiple tightening during the installation of the connecting plate in the prior art, which requires measurement while installing the connecting plate, and the easy axial movement of the piston rod.

[0014] Furthermore, the positioning seat is detachably connected to the valve body fixing structure.

[0015] The advantages of the above technical solution are: simple structure, easy to connect and fix, easy to preset the distance between the positioning surface on the positioning seat and the reference surface of the valve body, and the detachable connection between the positioning seat and the valve body fixing structure makes it easy to first install the valve body on the valve body fixing structure and then install the positioning seat, avoiding interference between the valve body installation and the positioning seat during the installation process.

[0016] Furthermore, the valve body fixing structure includes a fixing plate, the fixing plate is provided with an extension hole for the piston rod on the valve body to extend, the fixing plate is provided with a first plane and a second plane arranged in parallel and opposite directions, the first plane is used to fit with the reference surface of the valve body, and the positioning seat is fixedly disposed on the second plane.

[0017] The beneficial effects of the above technical solution are as follows: the setting of the fixing plate facilitates the fixing of the valve body, and the piston rod extends out, which facilitates the fixing of the piston rod. Two parallel planes are set on the fixing plate, which facilitates the fixing of the positioning seat.

[0018] Furthermore, the positioning seat is an "L"-shaped connecting plate, which includes a first connecting plate fixedly connected to the second plane of the fixed plate and a second connecting plate arranged perpendicularly to the first connecting plate. The positioning surface is located on the side of the second connecting plate facing the fixed plate and is parallel to the first plane.

[0019] The beneficial effects of the above technical solution are: the "L"-shaped connecting plate has a simple structure and is easy to process and manufacture. By setting the first connecting plate, it is convenient to install and fix the positioning seat on the fixed plate, and it is also convenient to use the size of the first connecting plate to maintain the distance between the positioning surface and the reference surface of the positioning seat.

[0020] Furthermore, the positioning seat is provided with a threaded hole, and the piston rod limiting structure includes a clamping member that is connected to the threaded hole and used to clamp the piston rod.

[0021] The beneficial effects of the above technical solution are as follows: the piston rod limiting structure is set on the positioning seat, which improves the integration, and the position of the piston rod is limited by the cooperation between the threaded hole and the clamping part. The clamping part can be infinitely adjusted and is easy to use.

[0022] Furthermore, the axis of the threaded hole is perpendicular to the positioning surface, so that the clamping element is arranged coaxially with the piston rod to clamp the end face of the piston rod.

[0023] The beneficial effects of the above technical solution are as follows: the arrangement of the threaded holes allows the piston rod to be pressed against the compression limit position, and since the pressing part is arranged coaxially with the piston rod, the force of the pressing part on the piston rod is along the axial direction of the piston rod, which makes it less likely to damage the piston rod.

[0024] Furthermore, the positioning seat is provided with a plurality of bolt mounting holes distributed along the circumference, which are used to install bolts for fixed connection with the connecting plate.

[0025] The beneficial effects of the above technical solution are: it facilitates the anti-rotation of the connecting plate. After the connecting plate is in place, it is convenient to first prevent the connecting plate from rotating, and then to carry out anti-loosening treatment on the connecting plate, which facilitates the fixation of the position of the connecting plate.

[0026] Furthermore, the second connecting plate is provided with a measuring hole that penetrates the second connecting plate, and the fixing plate is provided with a clearance hole, so that the measuring ruler can abut against the reference surface of the valve body through the measuring hole and the clearance hole.

[0027] The advantages of the above technical solution are: it facilitates the insertion of a measuring ruler to measure dimensions, verifies the surface of the connecting plate and the reference surface, and avoids errors caused by prolonged use. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the connection between the piston rod and the connecting disc in the prior art;

[0029] Figure 2 This is a front view of the connection between the piston rod and the connecting disc in the prior art;

[0030] Figure 3 This is a cross-sectional view (excluding the worktable) of Embodiment 1 of the mounting device for the hydraulic mechanism connecting plate in this invention;

[0031] Figure 4 This is another sectional view (excluding the worktable) of Embodiment 1 of the hydraulic mechanism connecting plate mounting device in this invention;

[0032] Figure 5 This is a usage diagram of Embodiment 1 of the mounting device for the hydraulic mechanism connecting plate in this invention;

[0033] Figure 6 This is a cross-sectional view (excluding the worktable) of the installation device for the hydraulic mechanism connecting plate in Embodiment 1 of the present invention in its usage state.

[0034] In the diagram: 11. Valve body; 111. Reference surface; 12. Piston rod; 13. Connecting plate; 131. Mounting hole; 132. Connecting surface; 14. Spring disc; 15. Nut; 2. Fixing plate; 21. Protrusion hole; 22. Clearance hole; 23. First plane; 24. Second plane; 3. Connecting plate; 31. First connecting plate; 32. Second connecting plate; 33. Positioning surface; 34. Bolt mounting hole; 35. Measuring hole; 4. Top column; 5. Worktable; 51. First bracket; 52. Second bracket. Detailed Implementation

[0035] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0036] In Embodiment 1 of the mounting device for the hydraulic mechanism connecting plate (hereinafter referred to as the mounting device) of the present invention:

[0037] In this embodiment, by setting a valve body fixing structure, a positioning seat, and a piston rod limiting structure that are fixedly connected to each other, the valve body and the positioning seat are fixed to each other, so that the reference surface of the valve body and the positioning surface on the positioning seat are kept parallel and at a preset distance. Then, during the installation process, it is only necessary to ensure that the connecting surface and the positioning surface of the connecting plate are in close contact to achieve the installation of the connecting plate in place.

[0038] like Figure 3 , Figure 4 and Figure 5As shown, the installation device in this embodiment includes a workbench 5, a valve body fixing structure for fixing the valve body 11 on the workbench 5, a positioning seat fixedly installed on the valve body fixing structure, and a piston rod limiting structure for pushing the piston rod 12 to the compression limit position on the positioning seat. The piston rod limiting structure can be moved to the corresponding position to maintain pushing the piston rod 12.

[0039] Specifically, such as Figure 5 As shown, in this embodiment, a workbench 5 is provided to fix the valve body fixing structure. The workbench 5 includes a platform and a first bracket 51 and a second bracket 52 fixed on the platform for fixing the valve body fixing structure. The platform has supporting legs for placing on the ground.

[0040] like Figure 3 and Figure 4 As shown, the valve body fixing structure includes a rectangular fixing plate 2. The fixing plate 2 has an extension hole 21 for the piston rod 12 on the valve body 11 to extend out. The fixing plate 2 also has bolt holes for fixing the valve body 11, through which bolts pass to secure the valve body 11. The fixing plate 2 also has a first plane 23 for contacting the reference surface 111 of the valve body 11. When the valve body 11 is mounted on the fixing plate 2, the first plane 23 and the reference surface 111 of the valve body 11 are completely in contact, thus fixing the valve body 11. The fixing plate 2 also has a second plane 24 that is parallel to and opposite to the first plane 23, and a positioning seat is fixed to the second plane 24.

[0041] like Figure 3 and Figure 4As shown, the positioning seat is an "L"-shaped connecting plate 3. The connecting plate 3 has a first connecting plate 31 fixedly connected to the second plane 24 of the fixing plate 2 and a second connecting plate 32 arranged perpendicularly to the first connecting plate 31. A positioning surface 33 is provided on the side of the second connecting plate 32 facing the fixing plate 2. The connecting plate 3 is detachably connected to the valve body fixing structure. The setting of the first connecting plate 31 facilitates the fixed installation of the connecting plate 3 on the fixing plate 2, and also facilitates the determination of the position of the positioning surface 33 and the reference surface. The second connecting plate 32 is also provided with a threaded hole corresponding to the protrusion hole 21 on the fixing plate 2. The axis of the threaded hole is perpendicular to the positioning surface 33 and is used to set the piston rod limiting structure. When the connecting plate 3 is fixed on the fixing plate 2, the positioning surface 33 is parallel to the first plane 23. Since the first plane 23 and the reference surface 111 of the valve body 11 are in contact, the positioning surface 33 and the reference surface 111 of the valve body 11 are also parallel at this time. The second connecting plate 32 is also provided with bolt mounting holes 34 distributed along the circumferential direction to correspond with the mounting holes 131 on the connecting plate 13. It is worth noting that the number of bolt mounting holes 34 and mounting holes 131 are not the same. The number of bolt mounting holes 34 is greater than the number of mounting holes 131, so that the included angle between two adjacent bolt mounting holes is minimized. This ensures that when fixing the connecting plate 13, at least two bolt mounting holes 34 correspond with the mounting holes 131 on the connecting plate 13 so as to prevent the connecting plate 13 from rotating.

[0042] like Figure 3 and Figure 4 As shown, the piston rod limiting structure includes a clamping member, which is disposed at the threaded hole of the second connecting plate 32 for pushing against the piston rod 12. Specifically, in this embodiment, the clamping member is a top post 4 with a threaded section. A positioning nut is threadedly connected to the top post 4. When the top post 4 is turned, the positioning nut moves together with the top post. The positioning nut is set in a preset position so that when the end face of the top post 4 contacts the end face of the piston rod, the end face of the positioning nut also contacts the end face of the fixing plate 2, preventing the top post 4 from overtraveling. During installation, when the top post 4 is turned, the end face of the top post 4 can move relative to the positioning surface. The pushing action of the top post 4 can push the piston rod 12 to the compression limit position, so that the piston rod 12 does not move axially during the installation of the connecting plate 13.

[0043] In addition, a measuring hole 35 is provided on the second connecting plate 32, and an avoidance hole 22 is provided on the fixing plate 2 between the measuring hole 35 and the reference surface 111 of the valve body 11. That is to say, the reference surface 111 of the valve body 11 can be directly contacted through the measuring hole 35. After the connecting plate 13 is fixed, the distance can be measured by measuring ruler to determine whether there is an error and to perform verification.

[0044] like Figure 5 and Figure 6 As shown, when it is necessary to fix the connecting plate 13 on the piston rod 12, firstly, pre-install the nut 15, spring disc 14, and connecting plate 13 sequentially on the threaded connection section of the piston rod 12. Then, fix the valve body 11 on the fixing plate 2, compress the piston rod 12 to its limit position, and then screw the top column 4 out to a position that fits against the end face of the piston rod 12, thus completing the fixation of the valve body 11 and the piston rod 12. At this time, the connecting plate 13 and the connecting plate 3 are adjacent. Rotate the connecting plate 13 in the opposite direction, so that the distance between the connecting plate 13 and the positioning surface 33 on the connecting plate 3 continuously decreases until the connecting surface 132 and the positioning surface 33 of the connecting plate 13 fit together. This indicates that the connecting plate 13 has been adjusted into place. Slightly adjust the surface of the connecting plate 13 so that at least two of the mounting holes 131 on the connecting plate 13 correspond to the threaded mounting holes 34 on the second connecting plate 32. Fix the mounting holes 131 of the connecting plate 13 through the connecting holes so that the connecting plate 13 no longer rotates. At this point, adjust the nut 15 on the piston rod 12 so that the nut 15 moves toward the side of the connecting plate 13. By compressing the spring disc 14 between the nut 15 and the connecting plate 13, the anti-loosening self-locking is completed, and the installation of the connecting plate 13 is completed. It is worth noting that the method used to install the connecting plate 13 is also the installation method of the hydraulic mechanism connecting plate in this invention.

[0045] The installation device for the hydraulic mechanism connecting plate in this invention is not limited to the embodiments described above. Based on the design concept of this invention, there can be many other modified embodiments.

[0046] In Embodiment 2 of the hydraulic mechanism connecting plate mounting device of the present invention, a new arrangement is proposed for the positioning seat. Unlike Embodiment 1, this embodiment does not include a measuring hole; distance is measured using the jaws of a vernier caliper. Of course, in other embodiments, only sampling inspection may be performed.

[0047] In Embodiment 3 of the hydraulic mechanism connecting plate mounting device of the present invention, a new arrangement is proposed for the threaded hole on the positioning seat. Unlike Embodiment 1, this embodiment provides a pin hole on the second connecting plate, which engages with the mounting hole on the connecting plate to prevent rotation. Of course, in other embodiments, the threaded hole or pin hole may not be provided; the connecting plate can be held in place by hand after the connecting surface of the connecting plate and the positioning surface on the positioning seat are in contact, maintaining the connecting plate's fixation until rotation is prevented.

[0048] In Embodiment 4 of the hydraulic mechanism connecting plate mounting device of the present invention: Regarding the setting of the piston rod limiting structure, this embodiment proposes a new arrangement. Unlike Embodiment 1, this embodiment no longer provides a threaded hole on the second connecting plate, but instead provides a groove on the second connecting plate at the same position as the axial position of the piston rod. A spring is provided in the groove to press against the end face of the piston rod. The end of the spring and the end face of the piston rod abut against each other, so that the piston rod is pushed to the compression limit position.

[0049] In Embodiment 5 of the hydraulic mechanism connecting plate mounting device of the present invention: Regarding the setting of the piston rod limiting structure, this embodiment proposes a new arrangement. Unlike Embodiment 1, this embodiment provides a threaded hole on the first connecting plate corresponding to the piston rod, and a bolt is installed in the threaded hole. When it is necessary to limit the piston rod, the bolt is tightened to compress the end of the bolt against the outer circumferential surface of the piston rod, thereby limiting the piston rod. At this time, the piston rod limiting structure can limit the piston rod to either the extension limit position or the compression limit position.

[0050] In Embodiment 6 of the hydraulic mechanism connecting plate mounting device of the present invention: Regarding the arrangement of the positioning seat, this embodiment proposes a new arrangement. Unlike Embodiment 1, in this embodiment, a rectangular frame bracket is provided on the second plane of the fixed plate, and the positioning seat is a rectangular plate structure, which is mounted on the fixed plate by the bracket.

[0051] In Embodiment 7 of the hydraulic mechanism connecting plate mounting device of the present invention: Regarding the arrangement of the valve body fixing structure, this embodiment proposes a new arrangement. Unlike Embodiment 1, in this embodiment, the valve body fixing structure is located at the bottom of the valve body, and a second plane parallel to the reference plane of the valve body is provided on the valve body fixing structure. The positioning seat is fixedly mounted on the second plane. Of course, in other embodiments, the positioning seat can also be directly mounted on the worktable.

[0052] In Embodiment 8 of the hydraulic mechanism connecting plate mounting device of the present invention: Regarding the connection form between the positioning seat and the valve body fixing structure, this embodiment proposes a new arrangement. Unlike Embodiment 1, in this embodiment, the positioning seat and the valve body fixing structure are welded together.

[0053] In Embodiment 9 of the hydraulic mechanism connecting plate mounting device of the present invention, a new arrangement is proposed for the setting position of the piston rod limiting structure. Unlike Embodiment 1, in this embodiment, the piston rod limiting structure is set on the valve body fixing structure, and a bracket is provided on the valve body fixing structure away from the second plane. A threaded hole is provided on the bracket, and the top column is set in the threaded hole. Of course, in other embodiments, the piston rod limiting structure can also be directly set on the worktable.

[0054] In Embodiment 1 of the installation method for the hydraulic mechanism connecting plate in this invention: as follows Figure 5 and Figure 6 As shown, before installing the connecting plate, first pre-install the nut 15, spring disc 14, and connecting plate 13 on the piston rod. Then, fix the valve body 11 on the valve body fixing structure. The positioning seat is the connecting plate 3 fixed on the valve body fixing structure. The top post 4 is set in the threaded hole on the connecting plate 3. Use the top post 4 to press the end face of the piston rod 12 so that the piston rod 12 is in the compression limit position. Since the positioning surface 132 on the connecting plate 3 and the reference surface 111 of the valve body 11 are relatively fixed and maintain a set distance at this time, and the structure of the connecting plate 3 makes the set distance the distance that should be maintained between the connecting surface 132 of the connecting plate 13 and the reference surface 111 of the valve body 11 when the piston rod 12 is in the corresponding limit position, at this time, it is only necessary to make the connecting surface 111 and the positioning surface 33 fit together to install the connecting plate 13 in place. At this time, twist the connecting plate 13 in the opposite direction so that the connecting surface 132 and the positioning surface 33 of the connecting plate 13 are tightly attached. To ensure that the connecting plate 13 does not move relative to the piston rod 12 after it is installed in place, the connecting plate 13 is fixed to the connecting plate 3 by fasteners. Then, the nut 15 is turned toward the connecting plate 13 so that the nut 15 compresses the spring disc 14 to complete the anti-loosening.

[0055] In Embodiment 2 of the installation method for the hydraulic mechanism connecting plate in this invention: during the anti-rotation process of the connecting plate using fasteners, this embodiment proposes a new arrangement. Unlike Embodiment 1, in this embodiment, after the connecting surface and positioning surface of the connecting plate are in close contact, the position of the connecting plate is fixed by hand, and then the position of the connecting plate on the piston rod is fixed.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A mounting device for a hydraulic mechanism connecting plate, characterized in that: The system includes a worktable (5) and a valve body fixing structure fixedly mounted on the worktable for fixing the valve body (11). A positioning seat is fixedly mounted on the worktable (5) or the valve body fixing structure. A piston rod limiting structure is provided on the worktable, the positioning seat, or the valve body fixing structure for limiting the piston rod (12) to keep it in the extreme position. The positioning seat has a positioning surface (33) for being set toward the reference surface (111) of the valve body (11) and maintaining a set distance therefrom. The set distance is the distance that should be maintained between the connecting surface (132) of the connecting plate (13) and the reference surface (111) of the valve body (11) when the piston rod (12) is in the corresponding extreme position. The valve body fixing structure includes a fixing plate (2). The fixed plate is provided with an extension hole (21) for the piston rod (12) on the valve body (11) to extend out. The fixed plate is provided with a first plane (23) and a second plane (24) arranged in parallel and opposite directions. The first plane is used to fit with the reference plane (111) of the valve body (11). The positioning seat is fixedly set on the second plane. The positioning seat is an "L"-shaped connecting plate (3). The connecting plate includes a first connecting plate (31) fixedly connected to the second plane (24) of the fixed plate (2) and a second connecting plate (32) arranged perpendicular to the first connecting plate. The positioning surface (33) is located on the side of the second connecting plate facing the fixed plate (2). The positioning surface is parallel to the first plane (23).

2. The mounting device for the hydraulic mechanism connecting plate according to claim 1, characterized in that: The positioning seat is detachably connected to the valve body fixing structure.

3. The mounting device for the hydraulic mechanism connecting plate according to any one of claims 1 or 2, characterized in that: The positioning seat is provided with a threaded hole, and the piston rod (12) limiting structure includes a clamping member that is connected to the threaded hole and used to clamp the piston rod (12).

4. The mounting device for the hydraulic mechanism connecting plate according to claim 3, characterized in that: The axis of the threaded hole is perpendicular to the positioning surface (33) so that the clamping member is arranged coaxially with the piston rod (12) to clamp the end face of the piston rod (12).

5. The mounting device for the hydraulic mechanism connecting plate according to any one of claims 1 or 2, characterized in that: The positioning seat is provided with a plurality of bolt mounting holes (34) distributed along the circumference. The bolt mounting holes (34) are used to install bolts to fix them to the connecting plate (13).

6. The mounting device for the hydraulic mechanism connecting plate according to claim 1, characterized in that: The second connecting plate (32) is provided with a measuring hole (35) that penetrates the second connecting plate (32), and the fixing plate (2) is provided with a clearance hole (22) so that the measuring ruler can abut against the reference surface (111) of the valve body (11) through the measuring hole (35) and the clearance hole (22).

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