A device for testing the bending resistance of a grading ring

Abstract

The application relates to the technical field of bending test, and discloses a device for carrying out a bending test on a pressure equalizing ring, which comprises a frame, a first guide rail sliding block pair, a first moving plate, a first clamping block, a second guide rail sliding block pair, a second moving plate, a second clamping block, a first driving element and a second driving element. When in use, the first moving plates can be moved close to each other or separated under the driving of the first driving element and the guiding and supporting of the first guide rail sliding block pairs, thereby driving the first clamping blocks to clamp or loosen the outer side of the circular hollow pipe at the bottom of the pressure equalizing ring. The second moving plates can be moved close to each other or separated under the driving of the second driving element and the guiding and supporting of the second guide rail sliding block pairs, thereby driving the second clamping blocks to tighten or loosen the inner side of the circular hollow pipe at the bottom of the pressure equalizing ring. Therefore, when the pressure equalizing ring is clamped and fixed, the outer side of the circular hollow pipe can be clamped and the inner side of the circular hollow pipe can be tightened, so that the deformation and damage of the circular hollow pipe can be avoided.

Description

Technical Field

[0001] This application relates to the field of bending test technology, and in particular to a bending test device with an equalizing ring. Background Technology

[0002] A related technology (publication number: CN220625970U) discloses a bending test machine for the production and testing of equalizing rings, including a worktable. The worktable has four openings, and clamping plates are installed within each of the four openings. Arc-shaped clamping pieces are fixedly installed on the opposite side walls of the four clamping plates. Four legs are fixedly installed at the bottom of the worktable, and a fixing plate is fixedly installed between the four legs. A first motor is fixedly installed at the bottom of the fixing plate, and a first lead screw is fixedly installed at the output end of the first motor. A transmission assembly for driving the four clamping plates to move is installed on the first lead screw.

[0003] In the process of implementing the technical solution disclosed herein, at least the following problems were found in the related technologies: This bending test machine for producing and testing equalizing rings operates by rotating the first lead screw under the drive of the first motor. Then, driven by the transmission assembly, the four clamping plates move closer or further apart, thereby clamping or releasing the bottom of the equalizing ring with four arc-shaped clamping pieces. However, it can only clamp the bottom of the equalizing ring from the periphery towards the center. Because the bottom of the equalizing ring is a circular hollow tube structure, its structural strength is relatively low, and excessive clamping force can easily cause deformation and damage to the bottom of the equalizing ring.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] To provide a basic understanding of some aspects of the disclosed technical solutions, a brief summary is given below. This summary is not a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these technical solutions, but rather serves as a prelude to the detailed explanations that follow.

[0006] This disclosure provides a bending resistance test device for an equalizing ring to solve the problems mentioned in the background art.

[0007] In some technical solutions, the equalizing ring bending test device includes: a frame, comprising a base plate, a vertical plate connected to the base plate, and a top plate connected to the vertical plate; the base plate is located below the top plate along the height direction of the frame, and the vertical plate is located on both sides of the top plate along the length direction of the frame; a first guide rail slider pair is evenly installed on the top surface of the top plate, with multiple first guide rail slider pairs equally spaced and their lines intersecting at a point; a first moving plate is respectively installed on the sliding end of multiple first guide rail slider pairs; a first clamping block is respectively installed on multiple first moving plates; and a second guide rail slider pair is respectively installed on... A plurality of second guide rail slider pairs are equally spaced and their lines intersect at a single point, mounted on the top surface of a plurality of first movable plates; second movable plates are respectively mounted on the sliding ends of the plurality of second guide rail slider pairs; second clamping blocks are respectively mounted on the plurality of second movable plates, and the plurality of second clamping blocks are located inside the plurality of first clamping blocks; a first driving member is mounted between the top plate and the plurality of first movable plates and is configured to drive the plurality of first movable plates to move closer together or separate; a second driving member is mounted between the top plate and the plurality of second movable plates and is configured to drive the plurality of second movable plates to move closer together or separate.

[0008] Optionally, the first driving component includes: a hollow shaft rotatably passing through the top plate, with a plurality of first guide rail slider pairs evenly distributed in a circle around the axis of the hollow shaft; a first turntable mounted on the outer wall of the hollow shaft; and a first connecting rod rotatably mounted between the first turntable and each of the first moving plates; wherein the hollow shaft can be controlled to rotate to drive the plurality of first moving plates to move closer together or separate.

[0009] Optionally, the first driving component further includes: a first support mounted on the bottom surface of the top plate; a first rotating arm mounted on the outer wall of the hollow shaft; and a first hydraulic cylinder rotatably mounted between the first support and the first rotating arm.

[0010] Optionally, the first driving component further includes: a bearing housing mounted on the top plate and sleeved on the hollow shaft; and a first bearing mounted between the bearing housing and the hollow shaft.

[0011] Optionally, the second driving component includes: a solid shaft rotatably passing through the hollow shaft, with a plurality of second guide rail slider pairs evenly distributed in a circle around the axis of the solid shaft; a second turntable mounted on the solid shaft; and a second connecting rod rotatably mounted between the second turntable and each of the second moving plates; wherein the solid shaft can be controlled to rotate to drive the plurality of second moving plates to move closer together or separate.

[0012] Optionally, the second driving component further includes: a second support mounted on the bottom surface of the top plate; a second rotating arm mounted on the solid shaft; and a second hydraulic cylinder rotatably mounted between the second support and the second rotating arm.

[0013] Optionally, the second drive component further includes a second bearing, mounted between the hollow shaft and the solid shaft.

[0014] Optionally, it further includes: a pressing member, installed between the two vertical plates, located above the plurality of first clamping blocks and the plurality of second clamping blocks along the height direction of the frame, for pressing.

[0015] Optionally, the pressing component includes: a first linear slide, mounted on either side of the vertical plate along the width direction of the frame; a first bending plate, mounted on the moving end of the first linear slide; a second linear slide, mounted on the first bending plate along the length direction of the frame; a second bending plate, mounted on the moving end of the second linear slide; a third hydraulic cylinder, mounted on the second bending plate along the height direction of the frame, with the moving end of the third hydraulic cylinder facing the ground; a lifting plate, mounted on the moving end of the third hydraulic cylinder; and a pressing head, mounted on the bottom surface of the lifting plate.

[0016] The present technical solution provides a bending resistance testing device for an equalizing ring, which can achieve the following technical effects: This disclosure provides a bending resistance testing device for an equalizing ring, comprising a frame, a first guide rail slider pair, a first movable plate, a first clamping block, a second guide rail slider pair, a second movable plate, a second clamping block, a first driving component, and a second driving component. The frame supports the entire device. The frame includes a base plate, a vertical plate connected to the base plate, and a top plate connected to the vertical plate. Along the height direction of the frame, the base plate is located below the top plate; along the length direction of the frame, the vertical plates are located on both sides of the top plate. The base plate rests against the ground, while the vertical plate and top plate support the relevant components of the device. The first guide rail slider pairs are evenly installed on the top surface of the top plate, with multiple first guide rail slider pairs evenly spaced and their lines intersecting at a single point, uniformly serving as guides and supports. The first movable plates are respectively installed on the sliding ends of the multiple first guide rail slider pairs, and under the guiding and supporting action of the multiple first guide rail slider pairs, they can move closer together or separate. The first clamping blocks are respectively installed on the multiple first movable plates, all used to abut against the outer side of the circular hollow tube at the bottom of the equalizing ring. Second guide rail slider pairs are respectively installed on the top surface of multiple first movable plates. These pairs are evenly spaced and their lines intersect at a single point, all serving as guides and supports. Second movable plates are respectively installed on the sliding ends of the multiple second guide rail slider pairs, allowing them to move closer together or separate under the guidance and support of these pairs. Second clamping blocks are respectively installed on the multiple second movable plates, located inside the multiple first clamping blocks, and are used to abut against the inner side of the circular hollow tube at the bottom of the equalizing ring. A first driving component is installed between the top plate and the multiple first movable plates to provide driving force, causing the multiple first movable plates to move closer together or separate. A second driving component is also installed between the top plate and the multiple second movable plates to provide driving force, causing the multiple second movable plates to move closer together or separate.

[0017] In use, driven by the first driving component and guided by multiple first guide rail slider pairs, multiple first moving plates can move closer together or separate, thereby causing multiple first clamping blocks to clamp or loosen the outer side of the circular hollow tube at the bottom of the equalizing ring. Driven by the second driving component and guided by multiple second guide rail slider pairs, multiple second moving plates can move closer together or separate, thereby causing multiple second clamping blocks to tension or loosen the inner side of the circular hollow tube at the bottom of the equalizing ring. Therefore, when clamping and fixing the equalizing ring, both the outer side and the inner side of the circular hollow tube can be clamped, ensuring the clamping and fixing effect while avoiding deformation and damage to the circular hollow tube.

[0018] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is a cross-sectional structural schematic diagram of a pressure equalization ring bending test device provided in an embodiment of this disclosure; Figure 2 yes Figure 1 Enlarged structural diagram at point A; Figure 3 yes Figure 1 Enlarged structural diagram at point B; Figure 4 yes Figure 1 Enlarged structural diagram at point C; Figure 5 This is a front view structural schematic diagram of a pressure equalization ring bending test device provided in an embodiment of this disclosure.

[0020] Figure label: 1: Base plate; 2: Vertical plate; 3: Top plate; 4: First guide rail slider pair; 5: First moving plate; 6: First clamping block; 7: Second guide rail slider pair; 8: Second moving plate; 9: Second clamping block; 10: Hollow shaft; 11: First turntable; 12: First connecting rod; 13: First support; 14: First rotating arm; 15: First hydraulic cylinder; 16: Solid shaft; 17: Second turntable; 18: Second connecting rod; 19: Second support; 20: Second rotating arm; 21: Second hydraulic cylinder; 22: First linear slide; 23: First bending plate; 24: Second linear slide; 25: Second bending plate; 26: Third hydraulic cylinder; 27: Lifting plate; 28: Pressing head. Detailed Implementation

[0021] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0022] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0023] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better describing the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this disclosure according to the specific circumstances.

[0024] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0025] Unless otherwise stated, the term "multiple" means two or more.

[0026] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0027] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0029] Combination Figures 1 to 5As shown, this embodiment of the present disclosure provides a bending resistance testing device for an equalizing ring, including a frame, a first guide rail slider pair 4, a first moving plate 5, a first clamping block 6, a second guide rail slider pair 7, a second moving plate 8, a second clamping block 9, a first driving component, and a second driving component. The frame is used to support the entire device. The frame includes a base plate 1, a vertical plate 2 connected to the base plate 1, and a top plate 3 connected to the vertical plate 2. Along the height direction of the frame, the base plate 1 is located below the top plate 3, and along the length direction of the frame, the vertical plate 2 is located on both sides of the top plate 3. The base plate 1 is used to abut against the ground, and the vertical plate 2 and the top plate 3 are used to support the relevant components of the device. The first guide rail slider pairs 4 are evenly installed on the top surface of the top plate 3. Multiple first guide rail slider pairs 4 are evenly distributed, and the straight lines they are on intersect at a point, uniformly serving as guide supports. The first moving plates 5 are respectively installed on the sliding ends of multiple first guide rail slider pairs 4, and under the guiding support of multiple first guide rail slider pairs 4, they can move closer together or separate. First clamping blocks 6 are respectively installed on multiple first movable plates 5, all used to abut against the outer side of the circular hollow tube at the bottom of the equalizing ring. Second guide rail slider pairs 7 are respectively installed on the top surface of multiple first movable plates 5. The multiple second guide rail slider pairs 7 are evenly distributed and their straight lines intersect at a point, all serving as guide supports. Second movable plates 8 are respectively installed on the sliding ends of multiple second guide rail slider pairs 7, and can move closer or separate under the guiding support of the multiple second guide rail slider pairs 7. Second clamping blocks 9 are respectively installed on multiple second movable plates 8, and the multiple second clamping blocks 9 are located inside the multiple first clamping blocks 6, all used to abut against the inner side of the circular hollow tube at the bottom of the equalizing ring. A first driving component is installed between the top plate 3 and the multiple first movable plates 5, used to provide driving force to drive the multiple first movable plates 5 to move closer or separate. A second driving component is installed between the top plate 3 and the multiple second movable plates 8, used to provide driving force to drive the multiple second movable plates 8 to move closer or separate.

[0030] This embodiment of the invention provides a bending resistance testing device for an equalizing ring. In use, driven by a first driving component and guided by multiple first guide rail slider pairs 4, multiple first moving plates 5 can move closer together or separate, thereby causing multiple first clamping blocks 6 to clamp or loosen the outer side of the circular hollow tube at the bottom of the equalizing ring. Driven by a second driving component and guided by multiple second guide rail slider pairs 7, multiple second moving plates 8 can move closer together or separate, thereby causing multiple second clamping blocks 9 to tension or loosen the inner side of the circular hollow tube at the bottom of the equalizing ring. Therefore, when clamping and fixing the equalizing ring, both the outer side and the inner side of the circular hollow tube can be clamped and tensioned, ensuring the clamping and fixing effect while preventing deformation and damage to the circular hollow tube.

[0031] Optionally, combined Figure 1 , Figure 2 and Figure 5As shown, the first driving component includes a hollow shaft 10, a first turntable 11, and a first connecting rod 12. The hollow shaft 10 is rotatably mounted on the top plate 3 and can rotate relative to the top plate 3. Multiple first guide rail slider pairs 4 are evenly distributed in a circle around the axis of the hollow shaft 10. The first turntable 11 is mounted on the outer wall of the hollow shaft 10 and rotates under the drive of the hollow shaft 10. The first connecting rod 12 is rotatably mounted between the first turntable 11 and each of the first moving plates 5, and can rotate relative to the first turntable 11 and the multiple first moving plates 5 respectively. The hollow shaft 10 can be controlled to rotate, causing the multiple first moving plates 5 to move closer together or separate.

[0032] In this embodiment, the hollow shaft 10 reciprocates under the drive of an external force, which in turn drives the first turntable 11 to reciprocate. Then, under the pulling or pushing of multiple first connecting rods 12 and the guiding and supporting action of multiple first guide rail slider pairs 4, multiple first moving plates 5 can move closer to each other or separate.

[0033] Optionally, combined Figure 1 and Figure 5 As shown, the first driving component also includes a first support 13, a first rotating arm 14, and a first hydraulic cylinder 15. The first support 13 is mounted on the bottom surface of the top plate 3 to support and mount the first hydraulic cylinder 15. The first rotating arm 14 is mounted on the outer wall of the hollow shaft 10 to drive the hollow shaft 10 to rotate. The first hydraulic cylinder 15 is rotatably mounted between the first support 13 and the first rotating arm 14, and can rotate relative to the first support 13 and the first rotating arm 14 respectively to provide driving force.

[0034] In this embodiment, the first hydraulic cylinder 15 is controlled to work. As the moving end of the first hydraulic cylinder 15 extends or retracts, the first rotating arm 14 can drive the hollow shaft 10 to rotate back and forth.

[0035] Optionally, combined Figure 2 As shown, the first driving component also includes a bearing housing and a first bearing. The bearing housing is mounted on the top plate 3 and sleeved on the hollow shaft 10. The first bearing is installed between the bearing housing and the hollow shaft 10.

[0036] In this embodiment of the present disclosure, the bearing housing is used to support and mount the first bearing, and to limit the position of the first bearing. The first bearing is used to support and mount the rotatable hollow shaft 10, reduce the frictional force on the hollow shaft 10, and improve the rotational accuracy of the hollow shaft 10.

[0037] Optionally, combined Figure 1 , Figure 2 and Figure 5As shown, the second driving component includes a solid shaft 16, a second turntable 17, and a second connecting rod 18. The solid shaft 16 is rotatably mounted through the hollow shaft 10 and can rotate relative to the hollow shaft 10. Multiple second guide rail slider pairs 7 are evenly distributed in a circular pattern around the axis of the solid shaft 16. The second turntable 17 is mounted on the solid shaft 16 and rotates under its drive. The second connecting rod 18 is rotatably mounted between the second turntable 17 and each of the second movable plates 8, and can rotate relative to both the second turntable 17 and the multiple second movable plates 8. The solid shaft 16 can be controlled to rotate, causing the multiple second movable plates 8 to move closer together or separate.

[0038] In this embodiment, the solid shaft 16 reciprocates under the drive of an external force, which in turn drives the second turntable 17 to reciprocate. Then, under the pulling or pushing of multiple second connecting rods 18 and the guiding and supporting action of multiple second guide rail slider pairs 7, multiple second moving plates 8 can move closer to each other or separate.

[0039] Optionally, combined Figure 1 and Figure 5 As shown, the second driving component also includes a second support 19, a second rotating arm 20, and a second hydraulic cylinder 21. The second support 19 is mounted on the bottom surface of the top plate 3 to support and mount the second hydraulic cylinder 21. The second rotating arm 20 is mounted on a solid shaft 16 to drive the solid shaft 16 to rotate. The second hydraulic cylinder 21 is rotatably mounted between the second support 19 and the second rotating arm 20, and can rotate relative to the second support 19 and the second rotating arm 20 respectively to provide driving force.

[0040] In this embodiment, the second hydraulic cylinder 21 is controlled to work. As the moving end of the second hydraulic cylinder 21 extends or retracts, the second rotating arm 20 can drive the hollow shaft 10 to rotate back and forth.

[0041] Optionally, combined Figure 2 As shown, the second drive component also includes a second bearing. The second bearing is mounted between the hollow shaft 10 and the solid shaft 16.

[0042] In this embodiment of the disclosure, the second bearing is used to reduce the frictional force on the solid shaft 16 and improve the rotational accuracy of the solid shaft 16.

[0043] Optionally, combined Figure 1 and Figure 5 As shown, it also includes a pressing component. The pressing component is installed between the two vertical plates 2, along the height direction of the frame, above the plurality of first clamping blocks 6 and the plurality of second clamping blocks 9, and is used for pressing.

[0044] In this embodiment of the disclosure, the pressing member is used to press the clamped and fixed equalizing ring to complete the bending resistance test of the equalizing ring.

[0045] Optionally, combined Figure 1 and Figure 5 As shown, the pressing component includes a first linear slide 22, a first bending plate 23, a second linear slide 24, a second bending plate 25, a third hydraulic cylinder 26, a lifting plate 27, and a pressing head 28. The first linear slide 22 is mounted on either side of the vertical plate 2 along the width direction of the frame, providing driving force to achieve linear movement. The first bending plate 23 is mounted on the moving end of the first linear slide 22 and moves along the width direction of the frame under the drive of the first linear slide 22. The second linear slide 24 is mounted on the first bending plate 23 along the length direction of the frame, providing driving force to achieve linear movement. The second bending plate 25 is mounted on the moving end of the second linear slide 24 and moves along the length direction of the frame under the drive of the second linear slide 24. The third hydraulic cylinder 26 is mounted on the second bending plate 25 along the height direction of the frame, with its moving end facing the ground, providing driving force to achieve linear movement. The lifting plate 27 is mounted on the moving end of the third hydraulic cylinder 26 and moves along the height direction of the frame under the drive of the third hydraulic cylinder 26. The pressing head 28 is mounted on the bottom surface of the lifting plate 27 and is used to abut against the clamped and fixed pressure equalizing ring.

[0046] In this embodiment, controlling the first linear slide 22 causes the first bending plate 23 to move along the width direction of the frame, ultimately causing the pressing head 28 to work along the width direction of the frame. Controlling the second linear slide 24 causes the second bending plate 25 to move along the length direction of the frame, ultimately causing the pressing head 28 to move along the length direction of the frame. Controlling the third hydraulic cylinder 26 causes the lifting plate 27 to move along the height direction of the frame, ultimately causing the pressing head 28 to move along the height direction of the frame. Therefore, by cooperating with the first linear slide 22, the second linear slide 24, and the third linear slide, the pressing head 28 can move freely in three-dimensional space, thereby enabling pressing at multiple positions of the clamped and fixed pressure equalizing ring.

[0047] Optionally, combined Figure 1 , Figure 3 and Figure 5 As shown, the pressing component also includes a linear bearing and a light shaft. The linear bearing is mounted on the second bending plate 25 along the height direction of the frame to support the sliding light shaft. The light shaft passes through the linear bearing and is connected to the lifting plate 27, moving synchronously with the lifting plate 27.

[0048] In this embodiment, the linear bearing and the optical axis together serve as guides and supports to improve the stability of the lifting plate 27 during movement and reduce the radial force on the moving end of the third hydraulic cylinder 26.

[0049] Optionally, combined Figure 1 , Figure 4 and Figure 5 As shown, the pressing component also includes a third guide rail slider pair. The third guide rail slider pair is installed on the other side vertical plate 2 along the width direction of the frame, and the first bent plate 23 is connected to the sliding end of the third guide rail slider pair.

[0050] In this embodiment of the present disclosure, the third guide rail slider pair serves as a guide and support to improve the stability of the first bending plate 23 during movement and reduce the force on the moving end of the first linear slide 22.

[0051] The foregoing description and accompanying drawings have fully illustrated embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of this disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A bending resistance test device for an equalizing ring, characterized in that, include: The frame includes a base plate, vertical plates connected to the base plate, and a top plate connected to the vertical plates. Along the height direction of the frame, the base plate is located below the top plate, and along the length direction of the frame, the vertical plates are located on both sides of the top plate. The first guide rail slider pair is evenly installed on the top surface of the top plate. Multiple first guide rail slider pairs are equally spaced and their straight lines intersect at a point. The first movable plate is respectively installed on the sliding end of the first guide rail slider pair; The first clamping blocks are respectively installed on multiple first movable plates; The second guide rail slider pairs are respectively installed on the top surface of multiple first movable plates. The multiple second guide rail slider pairs are equally spaced and the straight lines they are on intersect at a point. The second movable plate is respectively installed on the sliding end of multiple second guide rail slider pairs; The second clamping blocks are respectively installed on the plurality of second movable plates, and the plurality of second clamping blocks are located inside the plurality of first clamping blocks; A first driving element is installed between the top plate and the plurality of first movable plates and is configured to drive the plurality of first movable plates to move closer together or separate from each other. A second driving element, installed between the top plate and the plurality of second movable plates, is configured to drive the plurality of second movable plates to move closer together or separate from each other.

2. The equalizing ring bending test device according to claim 1, characterized in that, The first driving element includes: A hollow shaft is rotatably mounted on the top plate, and multiple first guide rail slider pairs are evenly distributed in a circle around the axis of the hollow shaft. The first turntable is installed on the outer wall of the hollow shaft; The first connecting rod is rotatably mounted between the first turntable and each of the first movable plates; The hollow shaft can be rotated in a controlled manner to drive the multiple first moving plates to move closer together or separate.

3. The equalizing ring bending test device according to claim 2, characterized in that, The first driving component further includes: The first support is installed on the bottom surface of the top plate; The first rotating arm is installed on the outer wall of the hollow shaft; The first hydraulic cylinder is rotatably mounted between the first support and the first rotating arm.

4. The equalizing ring bending test device according to claim 2, characterized in that, The first driving component further includes: A bearing housing is installed on the top plate and sleeved on the hollow shaft; The first bearing is installed between the bearing housing and the hollow shaft.

5. The equalizing ring bending test device according to claim 2, characterized in that, The second driving element includes: A solid shaft is rotatably inserted through the hollow shaft, and multiple second guide rail slider pairs are evenly distributed in a circle around the axis of the solid shaft; The second turntable is mounted on the solid shaft; The second link is rotatably mounted between the second turntable and each of the second movable plates; The solid shaft can be rotated in a controlled manner to drive multiple second moving plates to move closer together or separate.

6. The equalizing ring bending test device according to claim 5, characterized in that, The second driving component also includes: The second support is installed on the bottom surface of the top plate; The second rotating arm is mounted on the solid shaft; The second hydraulic cylinder is rotatably mounted between the second support and the second rotating arm.

7. The equalizing ring bending test device according to claim 5, characterized in that, The second driving component also includes: The second bearing is installed between the hollow shaft and the solid shaft.

8. A bending resistance test apparatus for an equalizing ring according to any one of claims 1 to 7, characterized in that, Also includes: The pressing component is installed between the two vertical plates on both sides, along the height direction of the frame, above the plurality of first clamping blocks and the plurality of second clamping blocks, and is used for pressing.

9. The equalizing ring bending test device according to claim 8, characterized in that, The pressing element includes: The first linear slide is installed on either side of the vertical plate along the width direction of the frame; The first bending plate is installed on the moving end of the first linear slide. The second linear slide is mounted on the first bending plate along the length of the frame; The second bending plate is installed on the moving end of the second linear slide. The third hydraulic cylinder is mounted on the second bending plate along the height direction of the frame, with the moving end of the third hydraulic cylinder facing the ground; A lifting plate is installed on the moving end of the third hydraulic cylinder; The pressing head is installed on the bottom surface of the lifting plate.

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