Universal adjusting device
The design of the universal adjustment device solves the problem of the embedded steel support tilting during the concrete pouring process, achieves the stability and construction accuracy of the anchor cable tensioning direction, and simplifies the subsequent processing steps.
Patent Information
- Application Number
- CN202422796749.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-15
AI Technical Summary
In the construction of foundation pit retaining piles, embedded steel supports are prone to tilt or offset during the concrete pouring process, affecting the anchor cable tensioning and guiding effect, resulting in construction errors.
A universal adjustment device is used, including a top plate and a bottom plate. The contact surfaces of the two are convex spherical and concave spherical surfaces, allowing sliding and rotating connections. The top plate supports the anchor, and the bottom plate is supported on a specific plane. The anchor cable passes through the top and bottom plates, and the angle is automatically fixed by the anchor cable tension.
Effectively correct the tilt angle and direction of the steel support, reduce construction errors, ensure the consistency of the anchor cable tensioning direction, avoid deviation caused by concrete impact, and simplify subsequent leveling work.
Smart Images
Figure CN223398129U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of anchors, in particular to a universal adjustment device. Background Art
[0002] In the construction of retaining piles in foundation pits, pile-anchor support is usually adopted. It is necessary to set an external anchor head on the side of the pile body to guide the tensioning of the anchor cable. Then the anchor cable is passed through the anchor head into the pile body and the soil behind the pile for tensioning. After tensioning, numerous protrusions are formed on the side wall of the foundation pit. It is also necessary to use measures such as sprayed concrete and brick walls to smooth the aforementioned protrusions to form a fertilizer trough filling layer.
[0003] In line with the principle of reducing excavation and protecting the environment, our company has developed an embedded steel support that is pre-buried in the pile body to replace the external anchor head, thus eliminating the fertilizer trough filling layer and reducing excavation;
[0004] However, the embedded steel supports are usually fixed on the steel cage. During the concrete pouring process of the pile body, the concrete is likely to impact the embedded steel supports, thereby affecting the inclination angle and direction of the embedded steel supports, and further affecting the guiding effect of the embedded steel supports on the tensioning of the anchor cables. Therefore, a device is required to correct the inclination angle and direction of the steel supports after the concrete is poured. Utility Model Content
[0005] The utility model aims to provide a universal adjustment device which is installed in an embedded steel support and corrects the tilt angle and direction of the embedded steel support.
[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a universal adjustment device, including a top plate and a bottom plate, the contact surfaces of the top plate and the bottom plate are a convex spherical surface and a concave spherical surface that cooperate with each other. Before tensioning the anchor cable, the convex spherical surface and the concave spherical surface are slidably and rotatably connected, the top plate is used to support the anchor, the bottom plate is supported on a specific plane, and the anchor cable passes through the anchor, the top plate and the bottom plate in sequence.
[0007] The beneficial effects of this program are:
[0008] 1. When pre-embedded steel supports are poured into the pile body concrete, the fluid concrete will create a large buoyancy on the steel supports embedded in the pile body. The vibrating rod used when pouring concrete will also affect the position accuracy of the steel supports. Therefore, there is a risk of the steel supports being displaced or floating, which will cause the direction and angle of the anchor cable tension to deviate.
[0009] The universal adjustment device allows the top plate to slide freely along the spherical surface through the setting of convex and concave spherical surfaces, thereby driving the anchor to rotate along the center of the spherical surface, making the angle of the anchor consistent with the design angle, so as to coordinate construction errors and keep the anchor cable angle unaffected.
[0010] 2. The top plate and bottom plate slide and rotate relative to each other. After being adjusted to the appropriate angle, the pressure brought by the tension of the anchor cable presses the bottom plate, top plate and embedded steel support tightly, thereby automatically achieving the effect of fixing the angle of the universal adjustment device.
[0011] 3. If the bottom plate and the steel support are fixed in advance, the spherical surface of the bottom plate may easily stick to the concrete, affecting the rotation and sliding effect of the top plate, making the contact between the top plate and the bottom plate unstable, thus affecting the effect of angle adjustment;
[0012] Therefore, this solution requires that the embedded steel support be removed after the pile body is poured, and then the utility model is installed on the embedded steel support; the concrete on the embedded steel support can be directly knocked off, and there is no need to consider the flatness of the surface of the embedded steel support too much.
[0013] Furthermore, the cross-sections of the top plate and the bottom plate are both annular, the outer diameter of the top plate is smaller than the outer diameter of the bottom plate, and the inner diameter of the top plate is smaller than the inner diameter of the bottom plate and the outer diameter of the anchor.
[0014] Furthermore, the convex spherical surface is the side of the bottom plate close to the top plate, and the concave spherical surface is the side of the top plate close to the bottom plate.
[0015] Furthermore, the convex spherical surface is the side of the top plate close to the bottom plate, and the concave spherical surface is the side of the bottom plate close to the top plate.
[0016] Furthermore, for the embedded steel support of the pile body, the specific plane is the side of the embedded steel support close to the base plate.
[0017] Furthermore, a limiting protrusion is provided on the specific plane, and a limiting groove is provided on a side of the bottom plate close to the specific plane, and the limiting protrusion and the limiting groove cooperate with each other.
[0018] Furthermore, the widths of the annular cross-sections of the top plate and the bottom plate are equal, and the space between the bottom plate and the inner side wall of the embedded steel support allows fingers to be inserted.
[0019] Furthermore, the specific plane is tilted, and the angle between the specific plane and the vertical plane is 15°-25°.
[0020] This solution also has the following effects:
[0021] 1. To minimize the impact of the embedded steel support on the integrity of the pile and reduce the positional deviation of the embedded steel support caused by the pouring of pile concrete, it is usually necessary to reduce the size of the embedded steel support as much as possible;
[0022] In a limited space, the size of the bottom plate can just fit into the embedded steel support. However, since the top plate needs to slide and rotate relative to the bottom plate, in order to ensure the movable space of the top plate, the outer diameter of the top plate needs to be smaller than the outer diameter of the bottom plate.
[0023] 2. If the inner edge of the top plate exceeds the inner edge of the bottom plate, the space available for the anchor cable to pass through becomes smaller, and the inner side of the top plate may rub against the anchor cable, causing part of the anchor cable tension to be transmitted to the top plate, thereby affecting the tensioning effect. When the top plate slides or rotates, it is not necessarily visible to the naked eye whether the inner edge of the top plate exceeds the inner edge of the bottom plate. Especially after the anchor is installed and before the anchor cable is tensioned, the inner edge of the top plate is completely invisible.
[0024] However, in this solution, the widths of the annular cross-sections of the top and bottom plates are equal. When the inner edge of the top plate exceeds the inner edge of the bottom plate, the outer edge of the top plate must also exceed the outer edge of the bottom plate. At this time, the operator inserts a finger between the bottom plate and the embedded steel support and hooks the finger back. If the finger can touch the outer edge of the top plate, it can be confirmed that the outer edge of the top plate has exceeded the outer edge of the bottom plate, and the relative position of the top and bottom plates can be adjusted in time.
[0025] 3. The concave spherical surface can be set on either the top plate or the bottom plate, but in order to achieve effect 2, it is preferred to set the concave spherical surface on the top plate. Compared with the convex spherical surface, the angle between the concave spherical surface and the outer edge is smaller, and the sense of confirmation when the finger touches it is stronger, so that the operator can more quickly confirm whether the outer edge of the top plate exceeds the outer edge of the bottom plate, and then determine whether the relative position of the top plate and the bottom plate needs to be adjusted in time.
[0026] 4. The limiting protrusions and limiting grooves cooperate with each other, so that after pouring concrete, the embedded steel support can limit the bottom plate, so as to facilitate stable and smooth adjustment of the top plate position.
[0027] 5. The specific plane is tilted 15°-25°, which is closer to the design angle of the anchor cable, thereby reducing the angle required for adjustment of the utility model and thus reducing the adjustment error. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is a three-dimensional axonometric drawing of the universal adjustment device and anchor of Example 1;
[0029] Figure 2 for Figure 1 3D cross-sectional view;
[0030] Figure 3 is a three-dimensional axonometric drawing of Example 5;
[0031] Figure 4 for Figure 3 3D axonometric drawing after removing the curved panel;
[0032] Figure 5 for Figure 3 Structural explosion diagram;
[0033] Figure 6 This is a schematic diagram of the pile body after pouring in Example 5. DETAILED DESCRIPTION
[0034] The following is further described in detail through specific implementation methods:
[0035] The figure marks in the drawings of the specification include: anchor 1, curved panel 2, operating port 21, operating cavity 22, transverse rib 23, vertical rib 24, reserved hole 25, Vientiane adjustment device body 3, accommodating hole 31, bottom plate 32, top plate 33, spherical surface 35, base 4, drilling port 41, pile body 5.
[0036] Example 1
[0037] Example 1 is basically as Figure 1 、 Figure 2 As shown: a universal adjustment device, such as Figure 1 As shown, the universal adjustment device includes a top plate 33 and a bottom plate 32. Figure 2 As shown, the top plate 33 and the bottom plate 32 are both annular cross-sections, the outer diameter of the top plate 33 is equal to the outer diameter of the bottom plate 32, the inner diameter of the top plate 33 is equal to the inner diameter of the bottom plate 32 and the outer diameter of the anchor 1, and a second accommodating hole 31 is respectively opened on the top plate 33 and the bottom plate 32, the outer diameter of the second accommodating hole 31 is smaller than the anchor 1, and the second accommodating hole 31 is used for the anchor cable to pass through, and the contact surfaces of the top plate 33 and the bottom plate 32 are a convex spherical surface 35 and a concave spherical surface 35 that cooperate with each other, the convex spherical surface 35 is the side of the bottom plate 32 close to the top plate 33, and the concave spherical surface 35 is the side of the top plate 33 close to the bottom plate 32. Before tensioning the anchor cable, the convex spherical surface 35 and the concave spherical surface 35 are connected by sliding and rotation, that is, the top plate 33 can slide arbitrarily along the spherical surface 35, driving the anchor 1 to rotate along the center of the second accommodating hole 31 of the bottom plate 32;
[0038] After the pile body 5 is cast, the bottom plate 32 is supported on a specific plane. The specific plane is set at an angle, and the angle between the specific plane and the vertical plane is 15°-25°. In this embodiment, the specific plane of the bottom plate 32 is the side of the embedded anchor 1 close to the bottom plate 32. The right side of the bottom plate 32 is welded to the inside of the embedded anchor 1, and the left side of the top plate 33 supports the anchor 1. The contact surface between the bottom plate 32 and the embedded anchor 1 and the contact surface between the top plate 33 and the anchor 1 are both flat. The anchor cable passes through the anchor 1, top plate 33, and bottom plate 32 in sequence.
[0039] Example 2
[0040] The difference between Example 2 and Example 1 is that the outer diameter of the top plate 33 is smaller than the outer diameter of the bottom plate 32 , and the inner diameter of the top plate 33 is smaller than the inner diameter of the bottom plate 32 and the outer diameter of the anchor 1 .
[0041] Example 2 is based on Example 1: the widths of the annular cross-sections of the top plate 33 and the bottom plate 32 are equal, and the space between the bottom plate 32 and the inner wall of the embedded steel support allows fingers to be inserted.
[0042] Example 3
[0043] The difference between Example 3 and Example 1 is that the convex spherical surface 35 is on the side of the bottom plate 32 close to the top plate 33 , and the concave spherical surface 35 is on the side of the top plate 33 close to the bottom plate 32 .
[0044] Example 4
[0045] The difference between Example 4 and Example 1 is that a limiting protrusion is provided on the specific plane, and a limiting groove is provided on the side of the bottom plate 32 close to the specific plane. The limiting protrusion is used to be inserted into the limiting groove for limiting, and the limiting protrusion and the limiting groove cooperate with each other.
[0046] Example 5
[0047] Example 1 is applicable to Example 5, and Example 5 is basically the same as Figure 3-Figure 6 As shown: Embedded steel support, suitable for foundation pits with pile anchor support, such as Figure 3 、 Figure 4 As shown, the right side of the figure is the center direction of the pile body 5, and an operating cavity 22 is provided in the embedded steel support. The embedded steel support includes a curved panel 2 and a base 4. A plurality of cross-sectional ribs 23 and vertical ribs 24 are welded on the side of the curved panel 2 close to the center of the pile body 5. Figure 4 As shown, the transverse ribs 23 and the vertical ribs 24 divide one side of the embedded steel support into several rectangular areas, and the base 4 covers the rectangular area at the center. The base 4, the transverse ribs 23 and the vertical ribs 24 enclose the operating cavity 22. Figure 4 As shown, the left side of the transverse rib 23 is an arc shape that matches the shape of the inner side of the arc plate, and the right side of the transverse rib 23 is a straight line shape that matches the shape of the base 4; a plurality of reserved holes 25 are opened on the left side of the transverse rib 23, and the reserved holes 25 of different heights are vertically aligned. The reserved holes 25 are used for the main reinforcement of the steel cage to pass through.
[0048] like Figure 5 As shown, the base 4 is a rectangular plate, the upper part of the base 4 is inclined toward the center of the pile body 5, the base 4 is in direct contact with the bottom plate 32 in Example 1, and the side of the base 4 close to the bottom plate 32 is the specific plane in Example 1; a drilling opening 41 is opened on the base 4, and the drilling opening 41 is used for allowing the drilling tool to pass through, and an operating opening 21 is opened on the curved panel 2, and the projection of the operating opening 21 on the base 4 covers the drilling opening 41, and the operating cavity 22 is connected to the operating opening 21 and the drilling opening 41 respectively.
[0049] like Figure 4 、 Figure 5 As shown, a universal adjustment device and an anchor 1 as described in Example 1 are sequentially provided on the side of the drilling opening 41 close to the operating chamber 22 , and the outer diameter of the bottom plate 32 is larger than that of the drilling opening 41 .
[0050] How to use the embedded steel support:
[0051] 1. Pass the main reinforcement of the steel cage through the reserved holes 25 of several embedded steel supports, and weld the main reinforcement to the side walls of the reserved holes 25; complete the pile hole construction;
[0052] 2. Place the filler into the operating cavity 22. The filler is a flexible material. In this embodiment, the filler is foam plastic. Place the steel cage into the pile hole and pour concrete into the pile body 5. The concrete covers the entire embedded steel support. A protective layer of at least 5 cm is left between the curved panel 2 of the embedded steel support and the outer surface of the pile body 5. Figure 6 shown.
[0053] 3. Excavate the foundation pit. When the foundation pit is excavated to the anchor head position, find the pre-buried embedded steel support, remove the filler and other debris in the operating cavity 22, drill the anchor hole, place the anchor cable, and grout the anchor hole.
[0054] 4. After the anchor hole grouting body reaches the specified strength, install the Vientiane adjustment device body 3, tension the anchor cable, and seal the anchor.
[0055] The above description is merely an embodiment of the present invention, and the commonly known specific technical solutions and / or features of the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be considered as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed in this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A universal adjustment device, characterized in that: It includes a top plate and a bottom plate. The contact surfaces of the top plate and the bottom plate are a convex spherical surface and a concave spherical surface that match each other. Before tensioning the anchor cable, the convex spherical surface and the concave spherical surface are connected by sliding and rotating. The top plate is used to support the anchor, and the bottom plate is supported on a specific plane. The anchor cable passes through the anchor, the top plate and the bottom plate in sequence.
2. The universal adjustment device according to claim 1, characterized in that: The cross sections of the top plate and the bottom plate are both annular, the outer diameter of the top plate is smaller than the outer diameter of the bottom plate, and the inner diameter of the top plate is smaller than the inner diameter of the bottom plate and the outer diameter of the anchor.
3. The universal adjustment device according to claim 2, characterized in that: The convex spherical surface is the side of the bottom plate close to the top plate, and the concave spherical surface is the side of the top plate close to the bottom plate.
4. The universal adjustment device according to claim 2, characterized in that: The convex spherical surface is the side of the top plate close to the bottom plate, and the concave spherical surface is the side of the bottom plate close to the top plate.
5. The universal adjustment device according to claim 1, characterized in that: Used on the embedded steel support of the pile body, the specific plane is the side of the embedded steel support close to the base plate.
6. The universal adjustment device according to claim 5, characterized in that: A limiting protrusion is provided on the specific plane, and a limiting groove is provided on one side of the bottom plate close to the specific plane, and the limiting protrusion and the limiting groove cooperate with each other.
7. The universal adjustment device according to claim 1, characterized in that: The widths of the annular sections of the top and bottom plates are equal, and the space between the bottom plate and the inner side wall of the embedded steel support allows for the insertion of fingers.
8. The universal adjustment device according to claim 1, characterized in that: The specific plane is tilted, and the angle between the specific plane and the vertical plane is 15°-25°.