Prestress anti-floating anchor rod fastening device in narrow space

Abstract

The utility model relates to the technical field of prestress anti-floating anchor rod construction, in particular to a prestress anti-floating anchor rod fastening device in a narrow space, which is used for fastening an anchor rod nut of a prestress anti-floating anchor rod and comprises a fastening wrench, and a clamping groove used for clamping the anchor rod nut is arranged on the fastening wrench. The connecting rod comprises a first section which is positioned below the construction surface and is connected with the fastening wrench, and a second section which is positioned above the construction surface and is connected with the wrench rod; the anchor rod nut fastening device can safely and effectively fasten a nut of an anchor rod in a narrow space, effective locking of prestress is guaranteed, meanwhile, an operator is prevented from making direct contact with a dangerous area, and the construction quality and the construction safety of the anchor rod are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of prestressed anti-buoyancy anchor construction, and in particular to a prestressed anti-buoyancy anchor fastening device in a confined space. Background Technology

[0002] In the field of building engineering, prestressed anti-buoyancy anchors are often used as an anti-buoyancy measure to resist the upward displacement of buildings or underground structures due to the buoyancy of groundwater. This type of anchor enhances its stability and load-bearing capacity through pre-applied stress, ensuring the safety and stability of the engineering structure when facing buoyancy.

[0003] To ensure the overall construction quality of a building, the construction quality of prestressed anti-buoyancy anchors is crucial. Current technologies for constructing prestressed anti-buoyancy anchors present the following problems: Because the design requires the top of the prestressed anti-buoyancy anchor to be located in a recessed area below the construction surface, and the anchor nut is located at the bottom of a pre-drilled hole, which is often very narrow, this arrangement means the anchor nut is located in a nearly vertical, confined space below the construction surface. This not only makes it difficult for conventional tools to access the nut for secondary tightening, but also poses a significant safety hazard as tensioning equipment for applying prestress is located above the anchor. Therefore, there is an urgent need for a device that can tighten the anchor nut within a confined space, ensuring construction safety while effectively locking the prestress and improving the construction quality of prestressed anti-buoyancy anchors. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a prestressed anti-buoyancy anchor fastening device for confined spaces. This device can safely and effectively fasten the nuts of the anchor rods in confined spaces, ensuring effective locking of the prestress, while avoiding direct contact between operators and dangerous areas, thus improving the quality and safety of anchor rod construction.

[0005] The technical solution of this utility model is to provide a prestressed anti-buoyancy anchor fastening device for use in confined spaces, used to fasten the anchor nuts of prestressed anti-buoyancy anchors. The device is characterized by comprising a tightening wrench with a groove for engaging the anchor nut; it also includes a connecting rod and a wrench rod, the connecting rod comprising a first section located below the construction surface and connected to the tightening wrench, and a second section located above the construction surface and connected to the wrench rod for fastening the anchor nuts of the prestressed anti-buoyancy anchor.

[0006] Furthermore, the prestressed anti-buoyancy anchor fastening device for confined spaces provided by this utility model may also have the following feature: the connecting rod is arranged in a vertical direction.

[0007] Furthermore, the prestressed anti-buoyancy anchor fastening device for confined spaces provided by this utility model may also have the following feature: the wrench lever is set in the horizontal direction.

[0008] Furthermore, the prestressed anti-buoyancy anchor fastening device for confined spaces provided by this utility model may also have the following features: the wrench includes a connecting part for connecting to the connecting rod and a hand-held part for manual operation, the connecting rod is provided with at least one connecting hole, and the connecting part passes through the connecting hole.

[0009] Furthermore, the prestressed anti-buoyancy anchor fastening device for confined spaces provided by this utility model may also have the following features: the connection between the connecting part and the connecting hole is fixed by a fixing structure, the fixing structure including a pin hole provided on the connecting part and a pin inserted into the pin hole, the pin head of the pin abutting against the connecting rod to restrict the movement of the connecting part along the opening direction of the connecting hole.

[0010] Furthermore, the prestressed anti-buoyancy anchor fastening device for confined spaces provided by this utility model may also have the following feature: the connecting rod is provided with a plurality of connecting holes along the length direction of the connecting rod.

[0011] Furthermore, the prestressed anti-buoyancy anchor fastening device for confined spaces provided by this utility model may also have the following features: the anchor nut is located at the bottom of the reserved hole, and the diameter of the fastening wrench is smaller than the diameter of the reserved hole.

[0012] Furthermore, the prestressed anti-buoyancy anchor fastening device for confined spaces provided by this utility model may also have the following feature: the length of the connecting rod is at least twice the height of the anchor nut from the construction surface.

[0013] Furthermore, the prestressed anti-buoyancy anchor fastening device for confined spaces provided by this utility model may also have the following feature: the length of the wrench rod is greater than the length of the connecting rod.

[0014] Furthermore, the prestressed anti-buoyancy anchor fastening device for confined spaces provided by this utility model may also have the following feature: the groove wall of the slot is provided with an anti-slip layer for anti-slip purposes.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. In this application, by extending the connecting rod below the construction surface, the operator can operate the wrench above the construction surface to tighten the nuts, avoiding direct contact between the operator and the dangerous area, thereby effectively ensuring the safety of the operator and the tightening effect of the prestressed anti-buoyancy anchor rod, and helping to improve the construction quality.

[0017] 2. In this application, the connecting rod and the wrench rod are connected through a connecting hole, and the connection between the wrench rod and the connecting hole is fixed by a fixing structure of a pin hole and a latch. This can effectively prevent the wrench rod from unnecessary displacement and coming out of the connecting hole. Furthermore, this fixing structure has the advantages of easy disassembly and assembly and low cost.

[0018] 3. In this application, the connecting rod is provided with several connecting holes. In actual operation, the operator can adjust the wrench rod to different connecting holes to adapt to construction surface operations at different heights, which greatly improves the versatility of the device. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0020] Figure 1 This is a front view of the present invention;

[0021] Figure 2 This is a top view of the present invention.

[0022] In the picture:

[0023] 1. Tightening wrench; 2. Slot; 3. Connecting rod; 4. Connecting hole; 5. Wrench handle; 6. Pin. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Because the design of prestressed anti-buoyancy anchors requires their tops to be located approximately 250mm below the construction surface, and the anchor nuts are located at the bottom of the pre-drilled holes, which are very narrow (only about 300mm), this arrangement means the anchor nuts are positioned almost vertically below the construction surface. This not only makes it difficult for conventional tools to access the nuts for secondary tightening, but also poses a significant safety hazard as tensioning equipment for applying prestress to the anchors is located above them, making it difficult for personnel to reach under the tensioning equipment for tightening operations.

[0026] To address the aforementioned problems, this utility model provides a prestressed anti-buoyancy anchor fastening device for use in confined spaces, used to fasten the anchor nuts of prestressed anti-buoyancy anchors. The specific structure is as follows:

[0027] like Figure 1 and Figure 2 As shown, the prestressed anti-buoyancy anchor bolt fastening device in a confined space includes a fastening wrench 1, which has a groove 2 for engaging the anchor bolt nut. The device also includes a connecting rod 3 and a wrench rod 5. The connecting rod 3 has a first section located below the construction surface and connected to the fastening wrench 1, and a second section located above the construction surface and connected to the wrench rod 5. This invention allows operators to tighten the nut by extending the connecting rod 3 below the construction surface, enabling them to operate the wrench rod 5 above the construction surface. This avoids direct contact with hazardous areas, effectively ensuring worker safety and the fastening effect of the prestressed anti-buoyancy anchor bolt, thus improving construction quality. Preferably, the fastening wrench 1 and the connecting rod 3 are fully welded, which improves the structural strength of the device and ensures the secure engagement of the anchor bolt nut by the fastening wrench 1.

[0028] Depending on the actual working conditions, the setting direction of the connecting rod 3 is not unique. In this embodiment, it is preferred that the connecting rod 3 be set in the vertical direction to reduce the force loss or uneven distribution caused by angular deviation.

[0029] To facilitate the operator's application of force to tighten the anchor nut, the wrench lever 5 is preferably positioned horizontally. When the wrench lever 5 is horizontally positioned, the operator can more easily apply a force perpendicular to the axis of the wrench lever 5, which is directly converted into torque and effectively transmitted to the tightening wrench 1.

[0030] The wrench handle 5 includes a connecting part for connecting to the connecting rod 3 and a hand-held part for manual operation. The connecting rod 3 has at least one connecting hole 4, through which the connecting part passes. Specifically, the connection between the connecting part and the connecting hole 4 is fixed by a fixing structure, which includes a pin hole on the connecting part and a pin 6 inserted into the pin hole. The pin head of the pin 6 abuts against the connecting rod 3 to restrict the movement of the connecting part along the opening direction of the connecting hole 4. The design of the pin hole and the pin 6 effectively prevents unnecessary displacement of the wrench handle 5, which could cause it to come out of the connecting hole 4. Furthermore, this fixing structure has the advantages of easy assembly and disassembly and low cost.

[0031] To enhance the versatility of the device, several connecting holes 4 are evenly spaced along the length of the connecting rod 3. In actual operation, the operator can adjust the wrench lever 5 to different connecting holes 4 to adapt to work on construction surfaces of different heights. Furthermore, when the connection between the connecting rod 3 and the wrench lever 5 is fixed by a pin-type fixing structure, adjusting the connection between the wrench lever 5 and different connecting holes 4 can be accomplished simply by inserting and removing the pin 6.

[0032] Since the anchor nut is located at the bottom of the reserved hole, the diameter of the tightening wrench 1 is preferably smaller than the diameter of the reserved hole, so that the tightening wrench 1 can easily enter and exit the reserved hole.

[0033] To ensure the connecting rod 3 has a relatively long length, so that the force applied to the wrench rod 5 can be effectively transmitted over a longer distance to the tightening wrench 1 located below the construction surface, reducing force loss due to short-distance transmission, the length of the connecting rod 3 is at least twice the height of the anchor nut from the construction surface. In this embodiment, the length of the connecting rod 3 is preferably 500 mm. More preferably, the spacing between two adjacent connecting holes 4 is 50 mm, providing more adjustment leeway to cope with different construction environments.

[0034] The length of the wrench lever 5 is set greater than the length of the connecting rod 3 to increase the length of the lever arm, allowing the operator to apply a larger torque with less force and more easily achieve the desired tightening effect. In this embodiment, the length of the wrench lever 5 is preferably 800 mm.

[0035] The groove wall of the slot 2 is provided with an anti-slip layer for preventing slippage. Specifically, the anti-slip layer can be a roughening treatment of the groove wall of the slot 2, which can effectively increase the friction between the slot 2 and the anchor nut, ensuring that the tightening wrench 1 will not easily slip or loosen during operation.

[0036] In some specific embodiments, the process of tightening the anchor nut using the prestressed anti-buoyancy anchor fastening device in a confined space provided by this utility model is as follows:

[0037] First, measure the depth of the pre-drilled hole, and adjust the position of the wrench 5 inserted into the connecting hole 4 of the connecting rod 3 as needed. Then, insert the pin 6 into the pin hole to fix the wrench 5. Next, insert the tightening wrench 1 into the lower part of the pre-drilled hole, align the slot 2 with the anchor nut, and engage it. After the tensioning equipment tensions the prestressed anti-buoyancy anchor rod to the design value of the locking load, the operator pushes the wrench 5 to tighten the anchor nut a second time.

[0038] The above-described contents can be implemented individually or in combination in various ways, and all such variations are within the protection scope of this utility model.

[0039] In the description of this invention, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0040] In the description of this invention, it should also be noted that the terms "center," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In the description of this invention, unless otherwise stated, "a number" means two or more.

[0041] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A prestressed anti-buoyancy anchor bolt fastening device for use in confined spaces, used to fasten the anchor bolt nut of a prestressed anti-buoyancy anchor bolt, characterized in that, It includes a tightening wrench (1) having a groove (2) for engaging the anchor nut; it also includes a connecting rod (3) and a wrench rod (5), the connecting rod (3) including a first section located below the construction surface and connected to the tightening wrench (1), and a second section located above the construction surface and connected to the wrench rod (5).

2. The prestressed anti-buoyancy anchor fastening device for confined spaces according to claim 1, characterized in that, The connecting rod (3) is set in the vertical direction.

3. The prestressed anti-buoyancy anchor fastening device for confined spaces according to claim 1, characterized in that, The wrench lever (5) is set in the horizontal direction.

4. The prestressed anti-buoyancy anchor fastening device for confined spaces according to claim 1, characterized in that, The wrench lever (5) includes a connecting part for connecting to the connecting rod (3) and a hand-held part for manual operation. The connecting rod (3) is provided with at least one connecting hole (4), and the connecting part passes through the connecting hole (4).

5. The prestressed anti-buoyancy anchor fastening device for confined spaces according to claim 4, characterized in that, The connection between the connecting part and the connecting hole (4) is fixed by a fixing structure. The fixing structure includes a pin hole provided on the connecting part and a pin (6) inserted into the pin hole. The pin head of the pin (6) abuts against the connecting rod (3) to restrict the connecting part from moving along the opening direction of the connecting hole (4).

6. The prestressed anti-buoyancy anchor fastening device for confined spaces according to claim 4, characterized in that, The connecting rod (3) is provided with a plurality of connecting holes (4) evenly spaced along the length direction of the connecting rod (3).

7. The prestressed anti-buoyancy anchor fastening device for confined spaces according to claim 1, characterized in that, The anchor nut is located at the bottom of the reserved hole, and the diameter of the fastening wrench (1) is smaller than the diameter of the reserved hole.

8. The prestressed anti-buoyancy anchor fastening device for confined spaces according to claim 1, characterized in that, The length of the connecting rod (3) is at least twice the height of the anchor nut from the construction surface.

9. The prestressed anti-buoyancy anchor fastening device for confined spaces according to claim 1, characterized in that, The length of the wrench lever (5) is greater than the length of the connecting rod (3).

10. The prestressed anti-buoyancy anchor fastening device for confined spaces according to claim 1, characterized in that, The groove wall of the card slot (2) is provided with an anti-slip layer for anti-slip purposes.

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