Supporting device for feet-lock bolt in hole

Abstract

The utility model relates to an in-hole supporting device for a feet-lock bolt. The in-hole supporting device comprises a basic circular ring, a rotating node and a rotatable supporting arm, the basic circular ring is fixed on the feet-lock bolt, the four rotatable support arms are connected with the basic circular ring through the rotating nodes, and the support arms can rotate around the rotating nodes. The rotatable supporting arm is composed of a first supporting rod, a second supporting rod and a third supporting rod to form a triangular structure, and rotation and fixation of the supporting arm are achieved through a rotating shaft and a fixing lock. The rotating joint is provided with a fixing groove and a fixing lock, after the rotatable supporting arm rotates to a designed position, the fixing rod enters the fixing groove and is locked, and the supporting arm is in an unfolded state to support the feet-lock bolt. Before the feet-lock anchor rod is placed into an anchor rod hole, the rotatable supporting arm is tightened on the outer side of the anchor rod, and the feet-lock anchor rod is conveniently placed into the anchor rod hole. In the anchor rod hole, the supporting arm is unfolded to be perpendicular to the anchor rod, it is ensured that the anchor rod is centered, and the binding power of the anchor rod and the soil body after grouting is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction equipment, in particular to a locking foot anchor rod in-hole support device. Background Art

[0002] In the field of tunnel construction, the locking foot anchor is a key component widely used to reinforce the inverted arch steel structure. During the installation process of the traditional locking foot anchor, short steel bars are generally welded to support the anchor, so that the anchor is centered in the hole and its anchoring capacity is increased. However, the ordinary support structure increases the cross-sectional area of ​​the anchor, which increases the space required when inserting it into the anchor hole. During construction, the anchor holes drilled manually or mechanically often have internal collapse and other problems, causing the anchor to encounter obstacles when inserted. The protruding support structure may further collide with the anchor hole and cause the hole to collapse, resulting in a decrease in the working efficiency of the locking foot anchor and an increase in the difficulty of construction. Therefore, a solution is needed that can reduce obstacles when the locking foot anchor enters the hole, and at the same time support the anchor after the anchor enters the hole so that it is centered in the hole. Utility Model Content

[0003] The utility model aims to provide a locking foot anchor hole support device to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a locking foot anchor hole support device, composed of a basic ring, a rotation node, and a rotatable support arm, wherein the rotatable support arm includes a first support rod, the first support rod is connected to the basic ring through a rotation node, the third support rod is vertically fixed to the first support rod, and the two ends of the second support rod are respectively fixed to the first support rod and the third support rod; the rotation node includes a support, the support is fixed to the outside of the basic ring, the ring is arranged on the support, the end of the first support rod is provided with a rotating shaft, the rotating shaft is fixed in the ring, the rotating shaft is provided with a fixing rod, the support is provided with a fixing groove, and the fixing groove is provided with a fixing lock.

[0005] As a preferred solution of the utility model, the number of the rotatable supporting arms is four.

[0006] As a preferred solution of the present utility model, the shape formed by the first support rod, the second support rod and the third support rod is a triangle.

[0007] As a preferred solution of the present invention, the axial direction of the fixing rod is parallel to the first supporting rod.

[0008] As a preferred solution of the present utility model, the fixing lock is a one-way inclined surface structure.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The device has a simple structure, small material consumption, and is easy to process, making it very suitable for one-time consumption in construction. The device is easy and quick to operate, does not require additional construction procedures, and does not require construction personnel to have additional professional skills, making it easy to promote and implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the front view of the utility model;

[0012] Figure 2 It is a side view of the utility model;

[0013] Figure 3 It is a partial plan view of the rotating shaft of the utility model;

[0014] Figure 4 It is a schematic diagram of the structure of the rotatable support arm of the utility model when it is folded;

[0015] Figure 5 It is a schematic diagram of the structure of the rotatable support arm of the utility model when it is unfolded;

[0016] Among them: 1. basic ring, 2. rotation node, 3. rotatable support arm, 21. support, 22. collar, 23. rotation axis, 24. fixed rod, 25. fixed groove, 26. fixed lock, 31. first support rod, 32. second support rod, 33. third support rod. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-5 , a specific implementation of the utility model is:

[0019] like Figure 1 As shown, a locking foot anchor hole support device is composed of a basic ring 1, a rotation node 2, and a rotatable support arm 3. The basic ring 1 can be fixed on the locking foot anchor. There are four rotatable support arms 3, which are connected to the basic ring 1 through the rotation node 2. The rotatable support arms 3 can rotate around the rotation node 2. Before the locking foot anchor is used, the rotatable support arms 3 are in a tightened state on the outside of the locking foot anchor, which is convenient for the locking foot anchor to be placed in the anchor hole. The rotatable support arms 3 are unfolded in the anchor hole and rotated to a state perpendicular to the locking foot anchor, so that the locking foot anchor can be centered in the anchor hole, thereby increasing the bonding strength between the locking foot anchor and the soil after grouting.

[0020] like Figure 2 As shown, the rotatable support arm 3 is composed of a first support rod 31, a second support rod 32, and a third support rod 33. The first support rod 31 is connected to the base ring 1 through a rotation node 2, and the third support rod 33 is located at the end of the first support rod 31 and is vertically fixed to the first support rod 31. The two ends of the second support rod 32 are respectively fixed to the first support rod 31 and the third support rod 33, forming a triangle therewith.

[0021] like Figure 3 As shown, the base of the rotation node 2 is a support 21, which is fixed to the outside of the base ring 1, and a collar 22 is arranged on the support 21. A rotation shaft 23 is arranged at the end of the first support rod 31, and the rotation shaft 23 is fixed in the collar 22 so that the first support rod 31 can rotate. A fixing rod 24 is arranged on the rotation shaft 23, and the axial direction of the fixing rod 24 is parallel to the first support rod 31. A fixing groove 25 is arranged on the support 21, and a fixing lock 26 is arranged in the fixing groove 25. The fixing lock 26 is a one-way inclined surface structure. When the rotatable support arm 3 rotates from the tightened state to the unfolded state, the fixing rod 24 squeezes the fixing lock 26 to retract it, and the fixing rod 24 enters the fixing groove 25 and is fixed, and the rotatable support arm 3 is fixed in the unfolded state.

[0022] like Figure 4-5 As shown, multiple locking foot anchor hole support devices are installed on the locking foot anchor at a certain distance, and the installation method can be welding, opening bolt holes and connecting with bolts. Before the locking foot anchor enters the hole, the rotatable support arm 3 is adjusted to a tightened state, which is convenient for the stacking and transportation of the locking foot anchor. When the locking foot anchor is placed in the anchor hole, it is not easy to interfere with the soil in the hole, so that the success rate of the locking foot anchor entering the hole at one time is increased, and the time spent on repeated hole cleaning and other processes is reduced. When the length of the locking foot anchor entering the hole exceeds the design requirements, the locking foot anchor is allowed to close to the bottom of the hole to pull the anchor back, and the triangular tip of the rotatable support arm 3 is blocked by the soil, so that the rotatable support arm 3 rotates and unfolds, and supports the locking foot anchor so that it is located in the middle of the anchor hole.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A locking foot anchor hole support device, characterized in that: The invention is composed of a basic circular ring (1), a rotation node (2), and a rotatable support arm (3), wherein the rotatable support arm (3) comprises a first support rod (31), the first support rod (31) is connected to the basic circular ring (1) through the rotation node (2), the third support rod (33) is vertically fixed to the first support rod (31), and the two ends of the second support rod (32) are respectively fixed to the first support rod (31) and the third support rod (33); the rotation node (2) comprises a support (21), the support (21) is fixed to the outside of the basic circular ring (1), the collar (22) is arranged on the support (21), a rotation axis (23) is arranged at the end of the first support rod (31), the rotation axis (23) is fixed in the collar (22), a fixing rod (24) is arranged on the rotation axis (23), a fixing groove (25) is arranged on the support (21), and a fixing lock (26) is arranged in the fixing groove (25).

2. A locking foot anchor hole support device according to claim 1, characterized in that: The number of the rotatable supporting arms (3) is four.

3. The locking foot anchor hole support device according to claim 1, characterized in that: The shape formed by the first support rod (31), the second support rod (32) and the third support rod (33) is a triangle.

4. The locking foot anchor hole support device according to claim 1, characterized in that: The axis direction of the fixing rod (24) is parallel to the first supporting rod (31).

5. The locking foot anchor hole support device according to claim 1, characterized in that: The fixing lock (26) is a one-way inclined surface structure.

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