Universal synchronous clamp and eccentric valve grinding equipment

Abstract

The utility model belongs to the technical field of clamps, and discloses a universal synchronous clamp and eccentric valve grinding equipment, the universal synchronous clamp comprises a guide piece, a fixed piece, a movable column, a sleeve, a plurality of clamping assemblies, an adjusting piece and a universal joint, the guide piece is provided with a plurality of guide holes which surround the axis of the guide piece at intervals, and the fixed piece is connected with the guide piece and provided with a through hole; the movable column moves in the through hole and can be locked, the sleeve abuts against or is connected with the periphery of the movable column, the movable column is adjusted to drive the sleeve to move, the multiple clamping assemblies are arranged on the outer wall of the sleeve at intervals, each clamping assembly comprises a connecting rod and a clamping jaw, one end of each connecting rod is rotationally connected with the sleeve, and the other end of each connecting rod is rotationally connected with the corresponding clamping jaw. One end of the universal joint is connected with the adjusting assembly, the other end of the universal joint is connected with the movable column, and the adjusting assembly can adjust the steering direction of the universal joint. The universal synchronous clamp can stably clamp the valve seat and adjust the orientation of the valve seat, so that the valve seat and the valve element are always attached during grinding, and the grinding quality of the valve seat and the valve element is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, in particular to a universal synchronous jig and an eccentric valve grinding device. Background Art

[0002] The eccentric valve has the functions of cutting off and regulating the flow rate. Therefore, in the pipelines of petroleum, chemical industry and urban drainage, the eccentric valve is mostly applied. During the use of the eccentric valve, the valve seat and the valve core of the eccentric valve are constantly scoured by the fluid, and at the same time, accompanied by frequent opening and closing, the sealing surfaces of the valve seat and the valve core of the eccentric valve will be worn, resulting in leakage of the pipeline. To avoid discarding the eccentric valve and causing waste, currently, the surfaces of the valve seat and the valve core of the eccentric valve are ground so that the eccentric valve can be used continuously.

[0003] Currently, the valve seat and the valve core are ground manually. However, a large amount of physical strength and energy of workers are consumed during the grinding process. At the same time, in the manual grinding method, the valve seat and the valve core cannot be fitted to each other in real time, resulting in the possibility that the accuracy of the ground valve seat and valve core may not meet the use requirements, and the sealing test of the eccentric valve is unqualified and cannot be reused.

[0004] Therefore, there is an urgent need for a universal synchronous jig and an eccentric valve grinding device to solve the above technical problems. Summary of the Utility Model

[0005] The first object of the utility model is to provide a universal synchronous jig, which can stably clamp the valve seat and can adjust the orientation of the valve seat, so that the surfaces of the valve seat and the valve core can always be fitted during grinding, ensuring that the valve seat and the valve core after grinding meet the experimental requirements and can be reused.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A universal synchronous jig includes:

[0008] A guiding member, the guiding member has a plurality of guiding holes, and the plurality of guiding holes are arranged at intervals around the axis of the guiding member;

[0009] A fixing member, connected to the guiding member, the fixing member has a through hole;

[0010] A movable column, movably arranged in the through hole, and the movable column can be locked in the through hole;

[0011] A sleeve, arranged on the outer periphery of the movable column, the sleeve is connected to the movable column, and adjusting the movable column can drive the sleeve to move along the direction of the fixing member;

[0012] A plurality of clamping components, a plurality of the clamping components are arranged at intervals on the outer wall of the sleeve. The clamping component includes a connecting rod and a clamping jaw. One end of the connecting rod is rotatably connected to the outer wall of the sleeve, and the other end of the connecting rod is rotatably connected to the clamping jaw. The clamping jaw is movably arranged in the guiding hole, and the clamping jaw has an anti-slip unit;

[0013] An adjusting component and a universal joint. One end of the universal joint is connected to the adjusting component, and the other end is connected to the movable column. The adjusting component is configured to adjust the steering of the universal joint.

[0014] As a preferred technical solution of the universal synchronous fixture, there are three clamping components, and the three clamping components are arranged at intervals on the outer circumference of the sleeve.

[0015] As a preferred technical solution of the universal synchronous fixture, the guiding member includes a middle body and three extending arms. The three extending arms are arranged at intervals in a radial pattern on the outer circumference of the middle body, and the guiding hole is arranged along the extending direction of the extending arm.

[0016] As a preferred technical solution of the universal synchronous fixture, the outer wall of the sleeve has protruding portions. There are three protruding portions, and the three protruding portions are arranged at intervals. The protruding portions are rotatably connected to the connecting rod.

[0017] As a preferred technical solution of the universal synchronous fixture, one end of the connecting rod connected to the protruding portion has a first installation groove. The clamping component further includes a first pin shaft. The protruding portion is located in the first installation groove, and the first pin shaft penetrates through and connects the first installation groove and the protruding portion;

[0018] The clamping jaw has a second installation groove. The clamping component further includes a second pin shaft. One end of the connecting rod connected to the clamping jaw is located in the second installation groove, and the second pin shaft penetrates through and connects the second installation groove and the connecting rod.

[0019] As a preferred technical solution of the universal synchronous fixture, the clamping jaw includes a connecting portion and a clamping portion. The connecting portion is connected to the connecting rod, and the clamping portion is used for clamping parts. The clamping portion has anti-slip threads, and the anti-slip threads are the anti-slip unit.

[0020] As a preferred technical solution of the universal synchronous fixture, the through hole is provided with internal threads, the movable column is provided with external threads, a convex rib is provided around one end of the movable column that does not extend into the through hole, and a retaining ring is provided at the opening of the sleeve near the convex rib end. The retaining ring fits on the convex rib;

[0021] Or, a plurality of clamping holes are arranged at intervals in the vertical direction on the side wall of the through hole, a ball is provided on the outer circumference of the movable column, and the sleeve is fixedly connected to the movable column.

[0022] As a preferred technical solution of the universal synchronous fixture, the universal synchronous fixture further includes a locking assembly, and the locking assembly is used to detachably connect the guiding member and the fixing member.

[0023] As a preferred technical solution of the universal synchronous fixture, the adjusting assembly includes an eccentric rotating member and a connecting plate. The eccentric rotating member can drive the connecting plate to move, and the universal joint is connected to the connecting plate.

[0024] The second object of the present invention is to provide an eccentric valve grinding device. To achieve this object, the present invention adopts the following technical solutions:

[0025] An eccentric valve grinding device is configured to enable the valve core and the valve seat of the eccentric valve to grind against each other. The eccentric valve grinding device includes a clamping seat for clamping and fixing the valve core. The eccentric valve grinding device further includes the universal synchronous fixture according to any one of the above, and the universal synchronous fixture is used to clamp the valve seat, and the universal synchronous fixture can make the valve seat always fit the surface of the valve core.

[0026] The beneficial effects of the present invention are as follows:

[0027] For the universal synchronous fixture provided by the present invention, by adjusting the movable column, the jaws in the clamping assembly can be made to approach each other, realizing rapid clamping of the valve seat. By providing a guiding hole on the guiding member, the jaws can move along the path guided by the guiding hole. At the same time, the setting of the guiding hole can also prevent the jaws from shaking, ensuring the stability of the clamping of the universal synchronous fixture. The setting of the anti-slip unit can ensure that the jaws firmly clamp the valve seat and prevent the valve seat from falling during transportation. Connecting the universal joint to the movable column can realize the adjustment of the orientation of the valve core, so that the valve seat and the surface of the valve core are in real-time fit during the grinding process, ensuring that the valve seat and the valve core after grinding can be used in cooperation, and the sealing degree of the eccentric valve after the two are assembled meets the use requirements, and the eccentric valve can be reused.

[0028] The eccentric valve grinding device provided by the present invention can ensure that the surfaces of the valve seat and the valve core after grinding are smooth, and after the two are ground, the sealing degree of the assembled eccentric valve meets the use requirements, reducing the waste of eccentric valves. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of the universal synchronous fixture provided by the present invention;

[0030] Figure 2 is a cross-sectional schematic diagram of the universal synchronous fixture provided by the present invention;

[0031] Figure 3 is a schematic structural diagram of the guiding member of the universal synchronous fixture provided by the present invention;

[0032] Figure 4 It is a schematic diagram of the jaw structure of the universal synchronous fixture provided by the present utility model.

[0033] In the figure:

[0034] 100, valve seat;

[0035] 1, guide member; 10, guide hole; 11, intermediate body; 12, extension arm; 2, fixing member; 3, movable column; 31, convex rib; 4, sleeve; 41, protruding portion; 42, retaining ring; 5, clamping assembly; 51, connecting rod; 511, first installation groove; 52, jaw; 521, clamping portion; 522, connecting portion; 5221, second installation groove; 523, anti-slip unit; 53, first pin shaft; 54, second pin shaft; 6, adjustment assembly; 61, eccentric rotating member; 62, connecting plate; 7, universal joint; 8, locking assembly; 9, connecting part. Specific embodiments

[0036] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that, for the sake of convenience of description, only the parts related to the present utility model are shown in the drawings, rather than all the structures.

[0037] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above the top of", and "on the top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below the bottom of", and "under the bottom of" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0039] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "right", etc. are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] Embodiment 1

[0041] As Figures 1 to 4 shown, this embodiment provides a universal synchronous fixture for clamping the valve seat 100 and enabling the valve seat 100 to always fit and grind with the surface of the valve core clamped by the clamped seat, so as to ensure the grinding effect of the valve seat 100 and the valve core and enable the eccentric valve to be reused. The universal synchronous fixture includes a guide member 1, a fixing member 2, a movable column 3, a sleeve 4, a clamping assembly 5, an adjusting assembly 6 and a universal joint 7. The fixing member 2 is connected to the guide member 1. The fixing member 2 has a through hole. The movable column 3 is movably arranged in the through hole and can be locked in the through hole. The sleeve 4 is arranged on the outer periphery of the movable column 3 and is connected to the movable column 3. Adjusting the movable column 3 can drive the sleeve 4 to move along the direction of the fixing member 2. The fixing member 2 is arranged in the vertical direction. Thus, when adjusting the movable column 3, the sleeve 4 can be driven to move in the vertical direction.

[0042] There are multiple clamping assemblies 5. The clamping assemblies 5 are arranged on the outer wall of the sleeve 4. The clamping assembly 5 includes a connecting rod 51 and a clamping jaw 52. One end of the connecting rod 51 is rotatably connected to the outer wall of the sleeve 4, and the other end is rotatably connected to the clamping jaw 52. The clamping jaw 52 is movably arranged in the guide hole 10. Thus, when the movable column 3 moves along the through hole and drives the sleeve 4 to move upward, the connecting rod 51 and the clamping jaw 52 will approach the sleeve 4. The guide hole 10 plays a guiding role for the movement direction of the clamping jaw 52, enabling the connecting rod 51 and the clamping jaw 52 to stably move towards the sleeve 4. At the same time, the setting of the guide hole 10 can also limit the swaying of the clamping jaw 52 and prevent the valve seat 100 from falling during transportation. Thus, when the movable column 3 drives the sleeve 4 to move upward, the clamping jaws 52 in the multiple clamping assemblies 5 can approach each other to ensure that the universal synchronous fixture can stably clamp the valve seat 100. An anti-slip unit 523 is arranged on the clamping jaw 52, which can prevent the valve seat 100 from falling during the transportation of the valve seat 100 by the universal synchronous fixture and ensure the firm clamping of the valve seat 100 by the clamping jaw 52.

[0043] One end of the universal joint 7 is connected to the adjusting assembly 6, and the other end is connected to the fixing member 2. The adjusting assembly 6 can adjust the steering of the universal joint 7. In this way, when the valve seat 100 and the valve core are ground, the worn surface of the valve core will be ground smooth. The setting of the universal joint 7 can adjust the orientation of the valve seat 100 in real time, so that the valve seat 100 and the valve core are always in a fitting state, ensuring that the valve seat 100 after grinding can cooperate with the valve core, and the sealing degree after their assembly meets the use requirements. The universal joint 7 can be directly connected to the movable column 3 or can be connected to the movable column 3 through the connecting part 9, and no specific limitation is made here.

[0044] For the universal synchronous fixture provided in this embodiment, by adjusting the movable column 3, the jaws 52 in the clamping assembly 5 can be made to approach each other, realizing the rapid clamping of the valve seat 100. By providing the guiding holes 10 on the guiding member 1, the jaws 52 can move along the path guided by the guiding holes 10. At the same time, the setting of the guiding holes 10 can also prevent the jaws 52 from shaking, ensuring the stability of the clamping of the universal synchronous fixture. The setting of the anti-slip unit 523 can ensure that the jaws 52 firmly clamp the valve seat 100 and prevent the valve seat 100 from falling during the transportation process. Connecting the universal joint 7 to the movable column 3 can realize the adjustment of the orientation of the valve core, so that the valve seat 100 and the surface of the valve core are in real-time fit during the grinding process, ensuring that the valve seat 100 and the valve core after grinding can cooperate with each other, and the eccentricity valve sealing degree after their assembly meets the use requirements.

[0045] In the solution of connecting the universal joint 7 and the movable column 3 through the connecting part 9 in this embodiment, the connecting part 9 can be set as a cube or a hexagonal cylinder and is connected between the two. In this way, the staff can quickly adjust the movable column 3 with the help of an adjustable wrench through the connecting part 9, so as to move the sleeve 4 and adjust the approach or separation of the jaws 52. No specific limitation is made on the shape of the connecting part 9 here.

[0046] Preferably, there are three clamping assemblies 5, and the three clamping assemblies 5 are arranged at intervals on the outer periphery of the sleeve 4. In this way, the universal synchronous fixture can clamp the valve seat 100 from three different directions. Compared with the scheme of clamping the valve seat 100 by two opposite clamping assemblies 5, the three clamping assemblies 5 can clamp the valve seat 100 more stably and will not complicate the structure of the universal synchronous fixture. Of course, the number of the clamping assemblies 5 can be set to four, or can be set to five, or even can be set to multiple. The staff can select the number of the clamping assemblies 5 according to the volume of the valve seat 100, and no specific limitation is made here.

[0047] Further, as Figure 1 and Figure 3As shown in [Figure], the guiding member 1 includes an intermediate body 11 and three extending arms 12. The three extending arms 12 are arranged at intervals radially on the outer periphery of the intermediate body 11. The guiding holes 10 are arranged along the extending direction of the extending arms 12. In this way, the guiding holes 10 are arranged in one-to-one correspondence with the jaws 52, so that the jaws 52 can be placed in the guiding holes 10 and move along the guiding holes 10. The guiding member 1 is configured as a structure of an intermediate body 11 and extending arms 12, which can make the whole guiding member 1 lighter and reduce the manufacturing cost of the guiding member 1. Of course, without considering the cost, the guiding member 1 can also be made into a cylindrical shape, and the guiding holes 10 are arranged at intervals around its central axis. The guiding member 1 can also be made into a polygonal column, and the guiding holes 10 are arranged at intervals around the central axis of the polygonal column. The polygon can be a triangle, a quadrilateral or a pentagon, and no specific limitation is made here. Regarding the connection between the intermediate body 11 and the extending arms 12 of the guiding member 1, it can be an integral connection or a detachable connection, and no specific limitation is made here. In this embodiment, it is preferably that the intermediate body 11 and the extending arms 12 are detachably connected. In this way, the number of the extending arms 12 can be adjusted according to the number of the clamping assemblies 5, improving the convenience of using the universal synchronous fixture. Regarding the connection between the intermediate body 11 and the extending arms 12, it can be connected by threads or by a clamping method, and no specific limitation is made here.

[0048] The outer wall of the sleeve 4 is provided with protruding portions 41. The number of the protruding portions 41 is the same as the number of the clamping assemblies 5, and the protruding portions 41 are arranged at intervals. In this embodiment, three protruding portions 41 are provided, and the three protruding portions 41 are spaced from each other, and the protruding portion 41 is rotatably connected to the connecting rod 51. The arrangement of the protruding portions 41 is more convenient for the staff to assemble the connecting rod 51 and the sleeve 4, improving the assembly efficiency of the staff. Exemplarily, a first installation groove 511 is provided at one end of the connecting rod 51 connected to the protruding portion 41. The clamping assembly 5 further includes a first pin shaft 53. During assembly, the protruding portion 41 can be inserted into the first installation groove 511. Corresponding installation holes are provided on the protruding portion 41 and the first installation groove 511. The first pin shaft 53 passes through the installation holes of the protruding portion 41 of the first installation groove 511 to achieve through connection of the first installation groove 511 and the protruding portion 41, so that the two can be rotatably connected. Of course, a first installation groove can also be provided on the protruding portion 41, the connecting rod 51 is extended into the first installation groove, and then the two are connected by using the first pin shaft 53. Regarding the connection method between the protruding portion 41 and the connecting rod 51, no specific limitation is made here.

[0049] Regarding the rotational connection between the connecting rod 51 and the jaw 52, exemplarily, a second mounting groove 5221 is provided on the jaw 52. The clamping assembly 5 further includes a second pin shaft 54. One end of the connecting rod 51 connected to the jaw 52 extends into the second mounting groove 5221. Corresponding mounting holes are also provided in the second mounting groove 5221 and the connecting rod 51. The second pin shaft 54 sequentially passes through the mounting holes in the second mounting groove 5221 and the connecting rod 51 to achieve a through connection between the second mounting groove 5221 and the connecting rod 51, thereby enabling a rotational connection between the connecting rod 51 and the jaw 52. Of course, a second mounting groove can also be provided on the connecting rod 51, and a protruding area that can extend into the second mounting groove on the connecting rod 51 can be provided on the jaw 52. Then, the second pin shaft 54 is used to penetrate and connect the connecting rod 51 and the jaw 52. The connection method between the connecting rod 51 and the jaw 52 is not specifically limited herein.

[0050] To enable the rapid assembly of the jaw 52 and the connecting rod 51. As Figure 1 and Figure 4 shown in, in this embodiment, the jaw 52 includes a connecting portion 522 and a clamping portion 521. The connecting portion 522 is rotatably connected to the connecting rod 51. The second mounting groove 5221 is provided on the connecting portion 522. The jaw 52 is used for clamping components, that is, the valve seat 100. This makes the structure of the jaw 52 more reasonable. At the same time, the clamping portion 521 also has anti-slip threads, which are specifically provided on the surface of the clamping portion 521 that fits the valve seat 100. The setting of the anti-slip threads can prevent the valve seat 100 from falling off the jaw 52, further improving the clamping stability of the universal synchronous fixture. The anti-slip threads are the anti-slip unit 523. Of course, an anti-slip gasket made of rubber can also be pasted on the surface of the jaw 52 that fits the valve seat 100, which can also serve as the anti-slip unit 523 to prevent the valve seat 100 from falling off. The selection of the anti-slip unit 523 is not specifically limited herein.

[0051] In this embodiment, the sleeve 4 and the movable column 3 can abut against each other. Exemplarily, an internal thread can be provided in the through hole, and an external thread is provided on the movable column 3. In this way, the movable column 3 can be movably arranged in the through hole and can be locked in the through hole. A convex rib 31 is provided around one end of the movable column 3 that does not extend into the interior of the through hole. A retaining ring 42 is provided at one end of the sleeve 4 near the opening of the convex rib 31. During actual assembly, the retaining ring 42 abuts against the convex rib 31. Since the retaining ring 42 is connected to the clamping assembly 5, and at the same time the jaw 52 is placed in the guiding hole 10, when the operator turns the movable column 3, the sleeve 4 will move in the vertical direction along with the movable column 3. Due to the restriction of the guiding hole 10 on the jaw 52, the sleeve 4 and the clamping assembly 5 will not rotate along with the turning of the movable column 3. The sleeve 4 can only move in the vertical direction, causing the jaws 52 to approach or move away from each other, clamping or releasing the valve seat 100.

[0052] In another embodiment, the sleeve 4 and the movable column 3 may also be fixedly connected. Exemplarily, a plurality of clamping holes may be provided at intervals in the vertical direction on the side wall of the through hole, and marbles are provided on the movable column 3. When it is necessary to adjust the position of the movable column 3 in the through hole, only need to clamp the marbles into the corresponding clamping holes, and at this time, the sleeve 4 and the movable column 3 are fixedly connected. At this time, it is necessary to ensure that both ends of the movable column 3 extend out of the sleeve 4 to ensure that the staff can compress the marbles and adjust the position of the movable column 3 in the through hole.

[0053] In this embodiment, the universal synchronous fixture further includes a locking assembly 8. The locking assembly 8 is used to detachably connect the guide member 1 and the fixing member 2, so as to facilitate the subsequent storage of the universal synchronous fixture. The locking assembly 8 includes a key and a locking bolt. A central hole is provided at the middle position of the guide member 1. Specifically, the central hole is located on the middle body 11. The central hole has a protruding groove, and a groove is provided on the side wall of the fixing member 2. During installation, the fixing member 2 is inserted into the central hole, and the outer wall fits with the inner wall of the central hole. Then, the groove and the protruding groove are opposed to each other, and the key is inserted into the hole formed by the opposing groove and protruding groove to prevent relative rotation between the fixing member 2 and the guide member 1. Then, the locking bolt is screwed into the through hole of the fixing member 2 to further stabilize the structures of the guide member 1 and the fixing member 2.

[0054] Of course, regarding the connection between the guide member 1 and the fixing member 2, it is also possible to set an internal thread in the central hole and an external thread on the fixing tube, and fix the two by using a threaded connection method. On the basis of not using the locking assembly 8, it is also possible to make the two detachably connected.

[0055] In this embodiment, the adjusting assembly 6 includes an eccentric rotating member 61 and a connecting plate 62. Rotating the eccentric rotating member 61 can drive the connecting plate 62 to move. The connecting plate 62 is connected to the universal joint 7. Thus, when the eccentric rotating member 61 is rotated, the steering of the universal joint 7 can be adjusted. Specifically, the eccentric rotating member 61 includes a bearing and a rocking unit. A first opening is provided on the connecting plate 62, and the bearing is located in the first opening. The rocking unit includes a cover plate and a handle. The cover plate is connected to the inner ring of the bearing, and the handle is placed on the cover plate. The axis of the handle and the axis of the bearing are not on the same straight line, thus forming an eccentric structure. In this way, when the bearing is rotated by the handle, the connecting plate 62 can be moved, thereby driving the universal joint 7 to rotate. The setting of the eccentric rotating member 61 can control the small rotation of the universal joint 7, and further accurately control the orientation of the valve seat 100, so that the valve seat 100 can always fit with the outer surface of the valve core, ensuring the grinding effect of the valve core and the valve seat 100. It should be noted that the eccentric rotating member 61 is a commonly used component in the mechanical field and does not belong to the key protection content of the present invention.

[0056] Embodiment Two

[0057] This embodiment provides an eccentric grinding device for enabling the valve core and the valve seat 100 of an eccentric valve to grind against each other. The eccentric valve grinding device includes a clamping seat for clamping the valve core to fix the valve core. The eccentric valve grinding device further includes a universal synchronous fixture for clamping the valve seat 100 and enabling the valve seat 100 to always fit against the surface of the valve core.

[0058] The segregation valve grinding device provided in this embodiment can ensure that the surface of the valve seat 100 and the valve core after grinding is smooth, and after the two are ground, the assembled eccentric valve has a sealing degree that meets the use requirements, reducing the waste of eccentric valves.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A universal synchronous clamp, characterized in that: include: A guide member (1), the guide member (1) having a plurality of guide holes (10), the plurality of guide holes (10) being arranged at intervals around an axis of the guide member (1); A fixing member (2) connected to the guide member (1), wherein the fixing member (2) has a through hole; A movable column (3) is movably disposed in the through hole, and the movable column (3) can be locked in the through hole; A sleeve (4) is arranged on the outer periphery of the movable column (3), the sleeve (4) is connected to the movable column (3), and the movable column (3) can be adjusted to drive the sleeve (4) to move along the direction of the fixing member (2); A plurality of clamping assemblies (5), wherein the plurality of clamping assemblies (5) are arranged at intervals on the outer wall of the sleeve (4), wherein the clamping assemblies (5) comprise a connecting rod (51) and a clamping claw (52), wherein one end of the connecting rod (51) is rotatably connected to the outer wall of the sleeve (4), and the other end of the connecting rod (51) is rotatably connected to the clamping claw (52), wherein the clamping claw (52) is movably arranged in the guide hole (10), and wherein the clamping claw (52) has an anti-slip unit (523); An adjustment component (6) and a universal joint (7), one end of the universal joint (7) is connected to the adjustment component (6), and the other end is connected to the movable column (3), and the adjustment component (6) is configured to adjust the steering of the universal joint (7).

2. The universal synchronous clamp according to claim 1, characterized in that: The clamping assemblies (5) are provided in three numbers, and the three clamping assemblies (5) are arranged at intervals on the outer circumference of the sleeve (4).

3. The universal synchronous clamp according to claim 2, characterized in that: The guide member (1) comprises a central body (11) and three extension arms (12), wherein the three extension arms (12) are radially spaced apart on the outer periphery of the central body (11), and the guide hole (10) is arranged along the extension direction of the extension arm (12).

4. The universal synchronous clamp according to claim 2, characterized in that: The outer wall of the sleeve (4) has a protrusion (41), three of the protrusions (41) are provided, the three protrusions (41) are arranged at intervals, and the protrusions (41) are rotatably connected to the connecting rod (51).

5. The universal synchronous clamp according to claim 4, characterized in that: One end of the connecting rod (51) connected to the protruding portion (41) has a first mounting groove (511), the clamping assembly (5) further comprises a first pin shaft (53), the protruding portion (41) is located in the first mounting groove (511), and the first pin shaft (53) penetrates and connects the first mounting groove (511) and the protruding portion (41); The clamping jaw (52) has a second mounting groove (5221), and the clamping assembly (5) also includes a second pin shaft (54). One end of the connecting rod (51) connected to the clamping jaw (52) is located in the second mounting groove (5221), and the second pin shaft (54) penetrates and connects the second mounting groove (5221) and the connecting rod (51).

6. The universal synchronous clamp according to claim 1, characterized in that: The clamping claw (52) comprises a connecting portion (522) and a clamping portion (521), wherein the connecting portion (522) is connected to the connecting rod (51), and the clamping portion (521) is used to clamp parts, and the clamping portion (521) has an anti-slip thread, and the anti-slip thread is the anti-slip unit (523).

7. The universal synchronous clamp according to claim 1, characterized in that: The through hole is provided with an internal thread, the movable column (3) is provided with an external thread, the end of the movable column (3) that does not extend into the through hole is provided with a convex ridge (31), and the opening of the sleeve (4) close to one end of the convex ridge (31) is provided with a retaining ring (42), and the retaining ring (42) is fitted on the convex ridge (31); Alternatively, a plurality of clamping holes are arranged at intervals along the vertical direction on the side wall of the through hole, marbles are arranged on the outer periphery of the movable column (3), and the sleeve (4) is fixedly connected to the movable column (3).

8. The universal synchronous clamp according to claim 1, characterized in that: The universal synchronous clamp further comprises a locking assembly (8), wherein the locking assembly (8) is used to enable the guide member (1) and the fixing member (2) to be detachably connected.

9. The universal synchronous clamp according to claim 1, characterized in that: The adjustment assembly (6) comprises an eccentric rotating member (61) and a connecting plate (62); the eccentric rotating member (61) can drive the connecting plate (62) to move; and the universal joint (7) is connected to the connecting plate (62).

10. An eccentric valve grinding device, configured to enable a valve core and a valve seat (100) of an eccentric valve to grind against each other, the eccentric valve grinding device comprising a clamping seat, the clamping seat being used to clamp and fix the valve core, characterized in that: The eccentric valve grinding device further comprises a universal synchronous clamp, which is used to clamp the valve seat (100), and the universal synchronous clamp can make the valve seat (100) always fit with the surface of the valve core.

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