An expandable pressure-type anchor plate and an anchoring assembly

Abstract

The present application discloses an expandable pressure-type anchor plate. The anchor plate includes a base and a plurality of movable parts that are spaced apart around the center of the base; the base includes a first end face and a second end face, and at least one through hole penetrating the first end face and the second end face is provided on the base; the movable parts are respectively rotatably connected to the base, so that the movable parts can expand or contract relative to the center of the base, and the contraction direction is contraction relative to the first end face. The present application also discloses an anchoring assembly using the above-mentioned anchor plate. The anchor plate structure of the present application helps to enhance the bearing capacity, improve the anti-floating effect, simplify the grouting process, and save the construction cost of anchoring and anti-floating.

Description

Technical Field

[0001] The present invention relates to the field of building fixation, and particularly to an expandable pressure - type anchor plate and an anchoring assembly. Background Art

[0002] With the development of the construction industry, in the construction fields such as high - rise buildings, rail transit, bridge and tunnel projects, urban underground transportation hubs, port terminals, high dams of reservoirs, slope engineering, and mine construction, the requirements for anchoring are increasing day by day. The development and use of underground projects need to consider the influence of groundwater buoyancy. Therefore, the requirements for building anchoring not only need a certain compressive strength but also corresponding uplift resistance.

[0003] For the existing equal - diameter pressure - type anchor rods, a bearing plate with a fixed shape is arranged at the bottom of the equal - diameter anchor rod to convert the tensile force borne by the anchor rod into the pressure borne by the bearing plate. This kind of equal - diameter pressure - type anchor rod is constructed with an anchor hole of equal aperture. Such an anchor rod cannot have both a small aperture and a large bearing capacity. When using a smaller - aperture anchor hole, it will limit the bearing area of the bearing plate, resulting in low bearing capacity; in addition, there are also problems such as the need to apply prestress.

[0004] There is also a disclosed capsule - type expanded - head anchor rod in the prior art. The carrier of the anchor rod is an expandable capsule bag. The upper aperture is small and the lower aperture is large. After the anchor rod is inserted into the hole and grouted, the capsule bag expands at the bottom of the hole to fill the bottom enlarged hole, and then secondary grouting is carried out outside the capsule bag to increase the uplift resistance of the anchor rod. However, the problems of this kind of anchor rod are that the enlarged head is a flexible capsule bag with weak bearing capacity; the grouting needs to be divided into two times of grouting inside and outside the capsule, and the process is cumbersome. Moreover, after the enlarged head is formed, the inside and outside of the capsule are divided into two solidified slurry blocks by the capsule bag and cannot be stressed as a whole, and the anti - floating effect is not ideal. Summary of the Invention

[0005] Technical Problem: The technical problem solved by the present invention is how to enhance the bearing capacity of the anchor rod and improve the anti - floating performance on the basis of simplifying the structure of the anchoring device.

[0006] Technical Solution: On the one hand, the present application provides an expandable pressure - type anchor plate. The anchor plate includes a base and a plurality of movable parts spaced around the center of the base; the base includes a first end face and a second end face, and at least one through - hole penetrating the first end face and the second end face is provided on the base; the movable parts are respectively rotatably connected to the base, so that the movable parts can expand or fold relative to the center of the base, and the folding direction is folding relative to the first end face. The rotation of the movable parts can adjust the anchor plate to be in an expanded state or a folded state.

[0007] Further, the base includes a limiting base and a connecting base. The limiting base and the connecting base are fixedly connected in a stacked manner. The connecting base includes at least one layer of connecting disks, and the connecting disks are fixedly connected in a stacked manner. The limiting base can limit the rotation angle of the movable part, causing it to converge from the unfolded state towards the first end face, preventing it from rotating towards the second end face side in the unfolded state.

[0008] Further, the connecting base includes a first connecting disk and a second connecting disk. The first connecting disk, the second connecting disk, and the limiting base are fixedly connected in sequence in a stacked manner. The first connecting disk and the second connecting disk are cylinders, and the outer diameter of the first connecting disk is smaller than that of the second connecting disk; at least one annular cavity surrounding the through hole is provided along the circumferential direction inside the first connecting disk and the second connecting disk.

[0009] Further, a coaxial first annular cavity and a second annular cavity are provided inside the first connecting disk. An annular rib separating the two is provided between the first annular cavity and the second annular cavity. The outer diameter of the first annular cavity is smaller than that of the second annular cavity; a number of first notches along the radial direction are equidistantly provided in the circumferential direction of the first connecting disk. A second notch along the radial direction is provided between adjacent first notches; the first notch is opened from the edge of the first connecting disk to between the annular rib and the outer wall of the through hole, forming equally spaced first clamping openings on the annular rib; the second notch is opened from the edge of the first connecting disk to between the outer cavity surface of the second annular cavity and the annular rib, forming equally spaced second clamping openings on the outer cavity surface of the second annular cavity.

[0010] Further, the second connecting disk has the same structure as the first connecting disk.

[0011] Further, a third annular cavity is provided inside the second connecting disk. A number of third notches along the radial direction are equidistantly provided in the circumferential direction of the second connecting disk. The third notch is opened from the edge of the second connecting disk to between the outer cavity surface of the third annular cavity and the outer wall of the through hole, forming equally spaced third clamping openings on the outer cavity surface of the third through hole cavity.

[0012] Further, when the first connecting disk and the second connecting disk are fixedly connected in a stacked manner, the notches on the first connecting disk and the notches on the second connecting disk are staggered in the circumferential direction. The notches staggered in the circumferential direction can, on the one hand, enable the second connecting disk below to limit the movable part connected to the first connecting disk; on the other hand, it can enable the movable parts connected to the first connecting disk and the second connecting disk to partially overlap in the top view direction after unfolding, so that there is no gap between the movable parts in the projection of the entire anchor disk in the top view direction.

[0013] Furthermore, the movable part includes a connecting rod and a sheet-like free part and a clamping part arranged at both ends of the connecting rod, and the connecting rod can be accommodated in the first slot, the second slot, and the third slot; the clamping part includes a first protrusion and a second protrusion arranged on both sides of the connecting rod, and the clamping part can cooperate with the first clamping port, the second clamping port, and the third clamping port to enable the movable part to be rotatably connected to the first connecting disk or the second connecting disk.

[0014] Furthermore, the connecting rod of the movable part is connected with two torsion springs, which are respectively located on the far connecting rod side of the first protrusion and the second protrusion; the first end of the torsion spring is fixed to the end face of the clamping part, and the second end is fixed to the outer cavity surface of the annular cavity.

[0015] Furthermore, the end face of the connecting rod away from the free part and the outer cavity surface of the annular cavity are respectively provided with small holes adapted to the end of the torsion spring, so that the end of the torsion spring is connected to the end face of the clamping part and the outer cavity surface of the annular cavity by inserting the small holes.

[0016] Furthermore, the connecting rod, the clamping portion and the free portion of the movable portion are integrally formed.

[0017] Furthermore, the limiting base is a cylinder, and its outer diameter is not less than the outer diameter of the connecting base, so as to limit the movable part connected to the connecting base.

[0018] Furthermore, the base is integrally formed to increase the connection strength between the bases and improve the bearing capacity.

[0019] The present application also provides an anchoring assembly made using the above-mentioned anchor plate, the anchoring assembly including an anchor plate, a constraint ring and an anchor rod; the constraint ring is sleeved on the outside of the movable part to fix the movable part in a retracted state; the anchor rod passes through the through hole and is fixedly connected to the second end face of the anchor plate.

[0020] Furthermore, the restraint ring includes a flexible metal belt and a pin shaft. Circular holes are respectively provided at both ends of the flexible metal belt. The pin shaft passes through the two circular holes to connect the ends of the metal belt into a ring.

[0021] Beneficial Effects: Compared with existing technologies, the anchor plate and anchor assembly of this application, on the one hand, form an integral enlarged head within the enlarged hole, enhancing the bearing capacity of the anchor rod and improving its anti-floating effect; on the other hand, the anchor plate and anchor assembly have a simple structure and save costs. In addition, when using the anchor plate and anchor assembly of this application for grouting in the hole, only one grouting injection is required, eliminating the need for a second grouting injection, and the operation steps are simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional diagram of the anchor plate in the present application in the unfolded state;

[0023] Figure 2 A top view of the anchor plate in the present application in the unfolded state;

[0024] Figure 3 The bottom view of the anchor plate in the deployed state of this application;

[0025] Figure 4 The schematic structural diagram of the anchor plate base of this application;

[0026] Figure 5 The internal structural sectional view of the first connecting plate of the anchor plate of this application;

[0027] Figure 6 The internal structural sectional view of the alternative of the second connecting plate of the anchor plate of this application;

[0028] Figure 7 The three-dimensional view of the internal connection structure of the first connecting plate of this application;

[0029] Figure 8 The enlarged view of the internal connection structure of the first connecting plate of this application;

[0030] Figure 9 The schematic structural diagram of the movable part of the anchor plate of this application;

[0031] Figure 10 The schematic diagram of the retracted state of the anchoring assembly of this application;

[0032] Figure 11 The schematic structural diagram of the restraint ring of the anchoring assembly of this application;

[0033] Figure 12 The schematic diagram of the deployed state of the anchoring assembly of this application. Detailed implementation manners

[0034] The present invention will be further described below in conjunction with the drawings and embodiments:

[0035] On the one hand, this application provides an expandable pressure-type anchor plate. As Figures 1 - 3 shown, the anchor plate includes a base 1 and 16 movable parts 2 spaced apart around the center of the base.

[0036] As Figure 4 shown, the base 1 includes a limit base 13 and a connecting base. The connecting base includes two layers of connecting plates, namely a first connecting plate 11 and a second connecting plate 12; the first connecting plate 11 and the second connecting plate 12 are cylinders, and the outer diameter of the first connecting plate 11 is smaller than the outer diameter of the second connecting plate 12. The first connecting plate 11, the second connecting plate 12 and the limit base 13 are fixedly connected in sequence in a stacked manner; preferably, the first connecting plate 11, the second connecting plate 12 and the limit base 13 are integrally formed.

[0037] The upper surface of the first connection plate 11 is the first end face of the base 1, and the lower surface of the limit base 13 is the second end face of the base 1. At least one through hole 14 penetrating the first end face and the second end face is provided on the base 1; that is, the through hole 14 penetrates the first connection plate 11, the second connection plate 12, and the limit base 13. The through hole 14 is opened in the middle of the base, and the through hole 14 can be used to pass through the anchor rod or can pass through the drill rod during the drilling process. The number of the through holes 14 can be set according to the construction requirements. In this embodiment, the number of the through holes is one, and it is opened at the central position of the base 1.

[0038] The movable part 2 is respectively rotatably connected to the base 1, so that the movable part 2 can expand or fold relative to the center of the base, and the folding direction is folding relative to the first end face. Preferably, in the unfolded state, the movable part rotates to a position parallel to the bottom surface of the base, so that the anchor plate is in the unfolded state, that is Figures 1 - 3 the state shown; in the folded state, the movable part 2 folds towards the first end face of the base, that is, folds towards the direction close to the upper surface of the first connection plate 11, that is Figure 11 the folded state in.

[0039] As Figure 9 shown, there are two kinds of movable parts, namely the movable part 21 and the movable part 22. The structures of the movable part 21 and the movable part 22 are the same. The movable part 21 includes a connecting rod 212 and sheet-shaped free parts 211 and clamping parts arranged at both ends of the connecting rod 212. The length of the connecting rod of the movable part 21 is greater than the length of the connecting rod of the movable part 22. The clamping part includes a first protrusion 213 and a second protrusion 214 arranged on both sides of the connecting rod. Preferably, the free part, the connecting rod and the clamping part of the movable part are integrally formed.

[0040] As Figure 5 shown, a coaxial first annular cavity 113 and a second annular cavity 114 are provided in the first connection plate 11. An annular rib 115 separating the two is provided between the first annular cavity 113 and the second annular cavity 114. The outer diameter of the first annular cavity 113 is smaller than the outer diameter of the second annular cavity 114. As Figure 4 shown, the first connection plate 11 is provided with four first notches 111 in the radial direction at equal intervals in the circumferential direction, and second notches 112 in the radial direction are opened between adjacent first notches.

[0041] The lengths of the first notch 111 and the second notch 112 are different. The first notch 111 is opened from the edge of the first connection disk 11 to the space between the annular rib 115 and the outer wall of the through hole 14, and first bayonets 116 are formed at equal intervals on the annular rib 115; the second notch 112 is opened from the edge of the first connection disk 11 to the space between the outer cavity surface of the second annular cavity and the annular rib 115, and second bayonets 117 are formed at equal intervals on the outer cavity surface of the second annular cavity. The clamping part of the movable part 21 cooperates with the first bayonet 116 to snap the movable part 21 into the first cavity, enabling the movable part 21 to rotate axially with its clamping part as the axis; the clamping part of the movable part 22 cooperates with the second notch 112 to snap the movable part 22 into the second cavity, enabling the movable part 22 to rotate axially with its clamping part as the axis. The upward rotation of the movable part 21 and the movable part 22 is the process of folding, and the downward rotation of the movable part 21 and the movable part 22 until they are gradually parallel to the bottom surface of the base is the process of unfolding. Since the distance from the first bayonet 116 to the edge of the first connection disk is farther than the distance from the second bayonet 117 to the edge of the first connection disk, that is, the movable part 21 is closer to the through hole 14, it will be folded inside the movable part 22. That is, in the folded state, the movable parts connected to the first connection disk are folded into two layers, with four movable parts 21 in the inner layer and four movable parts 22 in the outer layer.

[0042] In an embodiment of the present application, the structure of the first connection disk 11 is the same as the structure of the second connection disk 12. The outer diameter of the second connection disk is larger than the outer diameter of the first connection disk. Correspondingly, compared with the first connection disk, the first bayonet and the second bayonet opened on the second connection disk are farther from the through hole 14. Thus, the movable parts connected to the second connection disk can be folded outside the movable parts connected to the first connection disk. In this way, the folded anchor disk has four layers of movable parts, with 4 pieces in each layer.

[0043] In another embodiment of the present application, the structure of the second connection disk is different from the structure of the first connection disk 11. An alternative solution for the second connection disk is as Figure 6 shown. Only one annular cavity, that is, the third annular cavity 121, is provided inside the second connection disk 12a. The second connection disk 12 is provided with third notches 122 along the radial direction at equal intervals in the circumferential direction. The number of the third notches is the sum of the numbers of the first notch and the second notch on the first connection disk, which is eight in this embodiment. The third notch 122 is opened from the edge of the second connection disk 12 to the space between the outer cavity surface of the third annular cavity and the outer wall of the through hole, and eight third bayonets 123 are formed at equal intervals on the outer cavity surface of the third through hole cavity.

[0044] To control the size of the base, the outer diameters of the first connection plate and the second connection plate should not differ too much. In this way, if the third notch is too long, the clamping notch where the movable part is inserted will be relatively close to the through hole 14, and the first connection plate fixedly arranged on the second connection plate 12a may affect the folding of the movable part of the second connection plate, resulting in a relatively small folding range of the movable part. Therefore, the length of the third notch should not be too long. Preferably, the length of the third notch is not greater than the length of the second notch on the first connection plate. The movable part 22 with a shorter connecting rod can be selected as the movable part inserted into the third clamping notch, or the length of the connecting rod of the movable part can be adjusted according to actual needs. Since the movable parts are clamped in the same annular cavity, when in the folded state, the movable parts of the second connection plate will be folded into one layer and surround the outer circumference of the movable part connected to the first connection plate. In this way, the folded anchor plate has three layers of movable parts, 8 pieces in the outermost layer and 4 pieces in each of the inner two layers.

[0045] The limit base 13 is used to limit the rotation angle of the movable part connected to the second connection plate. Without limitation, the movable parts on the first connection plate or the second connection plate can rotate circumferentially with the clamping part as the axis. The setting of the limit base 13 can limit the rotation angle of the second connection plate. The limit base 13 is a cylinder, and the diameter of the limit base is not less than the diameter of the second connection. The limit base is below the second connection plate. When the movable part connected to the second connection plate is unfolded, the limit base can prevent the movable part from continuing to rotate downward (i.e., rotating toward the second end face side of the base).

[0046] As Figure 4 shown, when the first connection plate 11 and the second connection plate 12 are stacked, the notches (including the first notch and the second notch) on the first connection plate and the notches on the second connection plate are staggered in the circumferential direction. The staggered notches, on the one hand, can limit the maximum unfolding angle of the movable part on the first connection plate in the unfolded state to the state where the movable part is parallel to the bottom surface of the first connection plate 11, playing a role in rotational limitation and preventing it from continuing to rotate downward; on the other hand, the movable parts connected to the first connection plate and the second connection plate can partially overlap in the top view direction, so that there are no gaps in the top view projection after all the movable parts of the anchor plate are unfolded, thus preventing the slurry from flowing out from the gap to the bottom of the anchor plate during grouting and playing a role in enhancing the bearing capacity of the anchor plate.

[0047] As Figure 7 、 Figure 8 shown, the movable part is clamped in the annular cavity of the connection plate, and two torsion springs 3 are connected to the connecting rod of the movable part. The torsion springs 3 are respectively located on the side of the first protrusion 213 and the second protrusion 214 far from the connecting rod. Small holes adapted to the ends of the torsion springs 3 are respectively provided on the end face of the connecting rod far from the free part and the outer cavity surface of the annular cavity. The first end of the torsion spring 3 is inserted into the small hole on the end face of the clamping part for fixation, and the second end is inserted into the small hole on the outer cavity surface of the annular cavity for fixation. Through the setting of the torsion spring, the anchor plate is in the Figure 1In the deployed state shown, the anchor plate is in a retracted state under the action of an external force (such as Figure 1 the constraint ring 5 shown). After the constraint ring 5 is opened, under the action of the torsion spring, each movable part can quickly rotate from the retracted state to the deployed state, avoiding insufficient deployment or uncontrolled deployment direction of the movable part caused by external force interference. Similarly, Figure 5 when connecting the movable part, a torsion spring with the same structure can be provided for the second connecting plate in the embodiment shown, so as to realize the rapid outward deployment of the movable part, which will not be elaborated here.

[0048] The present application also provides an anchoring assembly made by using the above-mentioned anchor plate, such as Figure 10 shown. The anchoring assembly includes an anchor plate, a constraint ring 5 and an anchor rod 4; the constraint ring 5 is sleeved outside the movable part to fix all the movable parts in the retracted state; the anchor rod 4 passes through the through hole and is fixedly connected to the second end face (i.e., the bottom of the anchor plate) of the anchor plate. In an embodiment of the present application, the anchor rod can be fixedly connected to the anchor plate through a nut at the bottom of the through hole of the anchor plate.

[0049] Such as Figure 11 shown. Preferably, the constraint ring 5 includes a flexible metal strip 51 and a pin shaft 52. Circular holes are respectively provided at both ends of the flexible metal strip 51. The pin shaft 52 passes through the two circular holes to connect the ends of the metal strip into a ring, binding the anchor plate in the retracted state. After the pin shaft 52 is pulled out, the constraint ring is opened, and the anchor plate is deployed as Figure 12 shown.

[0050] The anchor plate of the present application is used as follows:

[0051] 1. Drill an anchor hole with an enlarged diameter section in advance;

[0052] 2. After fixedly installing the anchor plate and the anchor rod, tie a grouting pipe near the bottom of the anchor rod close to the anchor plate, bind the anchor plate in the retracted state through the constraint ring, and fix a pull rope at the top of the pin shaft of the constraint ring to complete the assembly;

[0053] 3. Lower the assembled anchor rod assembly into the pre-drilled anchor hole. When reaching the enlarged diameter section, apply a pulling force to the pull rope to pull out the pin shaft from the circular hole of the constraint ring, the constraint ring falls off, and the anchor plate is deployed in the enlarged diameter section under the action of the torsion spring;

[0054] 4. Start grouting after the anchor plate is deployed, and withdraw the grouting pipe from the anchor hole while grouting.

[0055] The anchor plate of the present application can also be applied to other construction methods. For example, the through hole in the middle of the anchor plate is for the drill rod to pass through, so that the drill rod is detachably connected to the anchor plate, and other through holes of the anchor plate can be used to fix the anchor bars; the drill rod passes through the retracted anchor plate and drives the anchor plate and the anchor bars into the hole while drilling; after the enlargement is completed at the predetermined position, apply a pulling force to the pull rope to open the constraint ring, deploy the anchor plate, and then complete the grouting.

[0056] After grouting, the grout solidifies into an integral bearing block in the anchor hole of the enlarged section. When the anchor rod is subjected to tension, the force is directly transmitted to the anchor plate base, and then an upward force is exerted on the solidified grout in the enlarged diameter section through the unfolded anchor plate, which is opposite to the direction of the force exerted by the soil above the enlarged diameter section on the solidified grout, so that the solidified grout is in a compressed state.

[0057] During the anchoring construction process, the anchor plate and the anchor rod assembly of the present application do not require secondary grouting after being lowered into the hole, and the construction process is simple. The unfolded movable part increases the force-bearing area, increases the local bearing pressure and punching shear bearing capacity, and at the same time ensures that the solidified grout in the enlarged head is more complete and dense, which is beneficial to improving the bearing performance and anti-floating effect.

Claims

1. An expandable pressure-type anchor plate, characterized in that, The anchor plate includes a base and a number of movable parts spaced around the center of the base; The base includes a first end face and a second end face, and at least one through hole penetrating the first end face and the second end face is provided on the base; The base includes a limiting base and a connecting base, the limiting base and the connecting base are fixedly connected in a stacked manner, the connecting base includes a first connecting disk and a second connecting disk, and the first connecting disk, the second connecting disk, and the limiting base are fixedly connected in sequence in a stacked manner; The movable parts are respectively rotationally connected to the first connecting disk and the second connecting disk, so that the movable parts can expand or contract relative to the center of the base, and the contraction direction is to contract relative to the first end face; When all the movable parts of the anchor plate are expanded, there is no gap in the top view projection.

2. The anchor plate according to claim 1, wherein the first connecting disk and the second connecting disk are cylinders, and the outer diameter of the first connecting disk is smaller than the outer diameter of the second connecting disk; at least one annular cavity surrounding the through hole is provided along the circumferential direction inside the first connecting disk and the second connecting disk.

3. The anchor plate according to claim 2, characterized in that, A coaxial first annular cavity and a second annular cavity are provided inside the first connecting disk, and an annular rib separating the two is provided between the first annular cavity and the second annular cavity, and the outer diameter of the first annular cavity is smaller than that of the second annular cavity; A number of first notches in the radial direction are equidistantly provided on the first connecting disk in the circumferential direction, and a second notch in the radial direction is provided between adjacent first notches; the first notch is opened from the edge of the first connecting disk to between the annular rib and the outer wall of the through hole, and first clamping openings are formed on the annular rib at equal intervals; the second notch is opened from the edge of the first connecting disk to between the outer cavity surface of the second annular cavity and the annular rib, and second clamping openings are formed on the outer cavity surface of the second annular cavity at equal intervals.

4. The anchor plate according to claim 3, wherein The second connecting disk has the same structure as the first connecting disk.

5. The anchor plate according to claim 3, characterized in that, A third annular cavity is provided inside the second connecting disk, and a number of third notches in the radial direction are equidistantly provided on the second connecting disk in the circumferential direction, and the third notch is opened from the edge of the second connecting disk to between the outer cavity surface of the third annular cavity and the outer wall of the through hole, and third clamping openings are formed on the outer cavity surface of the third through hole at equal intervals.

6. The anchor plate according to claim 4 or 5, characterized in that, When the first connecting disk and the second connecting disk are fixedly connected in a stacked manner, the notches on the first connecting disk and the notches on the second connecting disk are staggered in the circumferential direction.

7. The anchor plate according to claim 6, wherein The movable part includes a connecting rod, and a sheet-shaped free part and a clamping part provided at both ends of the connecting rod. The connecting rod can be accommodated in the first notch, the second notch, and the third notch; the clamping part includes a first protrusion and a second protrusion provided on both sides of the connecting rod, and the clamping part can cooperate with the first clamping opening, the second clamping opening, and the third clamping opening.

8. The anchor plate according to claim 7, wherein, Two torsion springs are connected to the connecting rod of the movable part, and the torsion springs are respectively located on the side of the first protrusion and the second protrusion far from the connecting rod; the first end of the torsion spring is fixed to the end face of the clamping part, and the second end is fixed to the outer cavity surface of the annular cavity.

9. The anchor plate according to claim 8, characterized in that, Small holes adapted to the ends of the torsion springs are respectively provided on the end face of the connecting rod away from the free part and the outer cavity surface of the annular cavity, so that the ends of the torsion springs are connected to the end face of the clamping part and the outer cavity surface of the annular cavity by inserting into the small holes.

10. The anchor plate according to claim 7, characterized in that, The connecting rod, the clamping part and the free part of the movable part are integrally formed.

11. The anchor plate according to claim 1, characterized in that, The limiting base is a cylinder, and its outer diameter is not less than the outer diameter of the connecting base.

12. The anchor plate according to any one of claims 1 to 5, characterized in that, The base is integrally formed.

13. An anchoring assembly made by using the anchor plate described in any one of claims 1 to 12, characterized in that, The anchoring assembly includes an anchor plate, a restraint ring and an anchor rod; the restraint ring is sleeved outside the movable part to fix the movable part in a retracted state; the anchor rod passes through the through hole and is fixedly connected to the second end face of the anchor plate.

14. The anchoring assembly according to claim 13, characterized in that, The restraint ring includes a flexible metal strip and a pin shaft. Circular holes are respectively provided at both ends of the flexible metal strip, and the pin shaft passes through the two circular holes to connect the ends of the metal strip into a ring.

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