Back taper die expanded-base combined anchor bolt

Abstract

The utility model discloses a back taper die bottom expanding combined anchor bolt which comprises an anchor bolt body and a protective shell, a gasket is sleeved on a screw rod of the anchor bolt body, a nut is sleeved on the screw rod of the anchor bolt body in a threaded mode, positioning grooves are respectively arranged on two sides of the nut, a clamping groove is arranged on one side of the protective shell, the clamping groove is contacted with the nut, and the nut is connected with the protective shell. Positioning openings are formed in the two sides of the protective shell correspondingly, and clamping blocks are connected into the positioning openings and the positioning grooves in a contact mode. Through the arrangement of the protective shell, the positioning opening, the clamping groove, the positioning groove, the connecting clamping block, the sliding groove, the spring, the operation block, the positioning rod and the like, the protective shell can be fixedly installed on the nut, the protective shell is convenient to disassemble and assemble, the exposed part of the screw rod is conveniently protected and effectively prevented from being exposed in the air for a long time, the service life of the exposed screw rod of the anchor bolt body is prolonged, and the service life of the anchor bolt is prolonged. And the corrosion damage of the exposed screw rod is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor bolts, in particular to an inverted cone die-expanded bottom combined anchor bolt. Background Technique

[0002] Anchor bolts are divided into three different structural forms: self-expanded bottom, die-expanded bottom, and adhesive-die-expanded bottom. For adhesive anchor bolts used in load-bearing structures, special inverted conical adhesive anchor bolts should be used. Briefly speaking, during the installation process of the anchor bolt, the hard cutting edge is used to cut the cement concrete, resulting in an expanded bottom effect at the bottom end of the anchor bolt. The die-expanded bottom anchor bolt drills a hole in advance before construction to form an expanded bottom shape, and then the expansion cone is sent to the bottom end of the drill hole by applying torque to produce a locking effect. The adhesive-die-expanded bottom anchor bolt is based on the die-expanded bottom anchor bolt, enlarges the diameter of the drill hole, and then introduces an adhesive, which plays a role in strengthening and preventing loosening, especially suitable for seismic or shear bearing capacity.

[0003] For example, the Chinese utility model patent with the authorization announcement number CN212643268U discloses an adhesive die-expanded bottom anchor bolt, which includes a screw rod, a gear nut installed at the lower end of the screw rod, and a locking key sleeved on the screw rod and located above the gear nut. The upper end of the gear nut is a conical structure, and the lower section of the gear nut is a cylindrical structure with gear teeth on the outer side wall. The locking key is a circular tube structure, and the lower end is axially processed into a plurality of locking key blades to achieve the anchoring effect by squeezing the locking key blades open through the conical structure of the gear nut. The utility model can eliminate the stress similar to mechanical anchor bolts, and at the same time ensure that even if the adhesive ages during the anchoring force-bearing process of the anchor bolt, the anchoring force will not be lost, preventing disasters caused by aging.

[0004] However, during the use of the existing inverted cone die-expanded bottom combined bolt, a section of the screw rod exposed outside is exposed to the air for a long time, resulting in surface rusting, and it is not convenient to protect the exposed screw rod.

[0005] Therefore, we propose an inverted cone die-expanded bottom combined anchor bolt to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide an inverted cone die-expanded bottom combined anchor bolt to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: an inverted cone die-expanded bottom combined anchor bolt, including an anchor bolt body and a protective shell. A gasket is sleeved on the screw rod of the anchor bolt body, and a nut is threadedly sleeved on the screw rod of the anchor bolt body. Positioning grooves are respectively opened on both sides of the nut;

[0008] A clamping groove is provided on one side of the protective shell, and the clamping groove contacts the nut. Positioning openings are respectively provided on both sides of the protective shell. The positioning openings and the positioning grooves contact connecting blocks. There are two connecting blocks. A sliding groove is provided in the connecting block. Both ends of the sliding groove are respectively slidably connected to operating blocks. A spring is fixed between the sides of the two operating blocks that are close to each other. Positioning rods are respectively fixed to the sides of the two operating blocks that are away from each other. Clamping grooves are respectively provided on the top and bottom surfaces of the positioning openings, and the positioning rods are clamped in the clamping grooves.

[0009] Preferably, the positioning opening and the positioning groove are internally connected, and a toggle groove is provided on one side of the operating block.

[0010] Preferably, notches are respectively provided at both ends of one side of the slide slot, and the operating block is slidably connected to the notches.

[0011] Preferably, the operating block is fixedly connected to limit blocks on both sides, and limit grooves are respectively provided at both ends of both sides of the sliding groove, and the limit blocks are slidably connected to the limit grooves.

[0012] Preferably, sliding grooves are respectively provided on the top surface and the bottom surface of the sliding groove, and the positioning rod is slidably connected to the sliding grooves.

[0013] Preferably, the nut contacts the gasket.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model can fix the protective shell on the nut by arranging the protective shell, positioning port, card slot, positioning groove, connecting card block, slide groove, spring, operating block, positioning rod and the like. The protective shell is easy to disassemble and assemble, and the exposed part of the screw rod is convenient for protecting, effectively preventing the exposed part from being exposed to the air for a long time, thereby increasing the service life of the exposed screw rod of the anchor bolt body and reducing the rust damage of the exposed screw rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 Structure schematic diagram from another perspective;

[0019] Figure 4 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0020] Figure 5 This is a schematic diagram of a partial structure of the utility model in a front view cross-sectional structure;

[0021] Figure 6This is a schematic side sectional view of the partial structure of the present utility model.

[0022] In the figure: 1. Anchor bolt body; 2. Gasket; 3. Nut; 31. Positioning groove; 4. Protective shell; 41. Clamping groove; 42. Positioning port; 421. Card slot; 5. Connecting block; 51. Sliding groove; 511. Limit groove; 52. Slot opening; 53. Sliding slot; 6. Spring; 7. Operating block; 71. Poking groove; 72. Limit block; 8. Positioning rod. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1:

[0025] Please refer to Figures 1-6 , which is the first embodiment of the present utility model. The present utility model provides a technical solution: an inverted cone die-expanded bottom combined anchor bolt, including an anchor bolt body 1 and a protective shell 4. A gasket 2 is sleeved on the screw rod of the anchor bolt body 1, and a nut 3 is threadedly sleeved on the screw rod of the anchor bolt body 1. Positioning grooves 31 are respectively opened on both sides of the nut 3;

[0026] A clamping groove 41 is opened on one side of the protective shell 4, the clamping groove 41 contacts the nut 3, positioning ports 42 are respectively opened on both sides of the protective shell 4, connecting blocks 5 are in contact connection in the positioning ports 42 and the positioning grooves 31. The number of the connecting blocks 5 is two. A sliding groove 51 is opened in the connecting block 5, and operating blocks 7 are respectively slidably connected to both ends in the sliding groove 51. A spring 6 is fixedly connected between the sides of the two operating blocks 7 close to each other, positioning rods 8 are respectively fixedly connected to the sides of the two operating blocks 7 away from each other. Card slots 421 are respectively opened on the top surface and the bottom surface in the positioning port 42, and the positioning rods 8 are clamped in the card slots 421, so that the connecting blocks 5 can be limited and installed.

[0027] Embodiment 2:

[0028] Please refer to Figures 1-6 , which is the second embodiment of the present utility model. This embodiment is based on the previous embodiment. The positioning ports 42 and the positioning grooves 31 are internally connected. A poking groove 71 is opened on one side of the operating block 7 to facilitate poking and moving the operating block 7.

[0029] Slot openings 52 are respectively opened at both ends on one side in the sliding groove 51, and the operating block 7 is slidably connected to the slot openings 52.

[0030] The operating block 7 is fixedly connected to the limiting blocks 72 on both sides, and the two ends of the slide groove 51 are respectively provided with limiting grooves 511. The limiting blocks 72 are slidably connected to the limiting grooves 511. The stability of the movement of the operating block 7 can limit the range of movement of the operating block 7.

[0031] The top surface and the bottom surface of the sliding groove 51 are respectively provided with sliding grooves 53 , and the positioning rod 8 is slidably connected to the sliding grooves 53 .

[0032] The nut 3 contacts the washer 2 .

[0033] Embodiment 3:

[0034] See also Figures 1-6 , which is the third embodiment of the utility model. This embodiment is based on the above two embodiments. When the utility model is actually used, after the anchor body 1 is installed, the overflowed glue is cleaned and waited for solidification. The gasket 2 is inserted and the nut 3 is connected. After the installation is completed, the side of the protective shell 4 with the card slot 41 is inserted close to the nut 3, and the connecting card block 5 is inserted into the positioning port 42 and the positioning slot 31. When the positioning rod 8 is about to contact the positioning port 42, the toggle slots 71 set in the operating blocks 7 at both ends of the connecting card block 5 are toggled to drive the two operating blocks 7 to approach each other and squeeze the spring 6, so that the positioning rod 8 is about to contact the positioning port 42. The positioning rod 8 moves into the sliding groove 53 accordingly, and the connecting block 5 can be slid into the positioning port 42, and the operating block 7 is loosened, so that the positioning rods 8 at both ends are acted upon by the springs 6 to correspondingly spring into the slots 421 set at both ends of the positioning port 42, and the connecting block 5 is installed and fixed, so that the protective shell 4 is limitedly installed on the nut 3, and the protective shell 4 is fixedly installed. The protective shell 4 is easy to disassemble and assemble, and is convenient for protecting the exposed part of the screw rod of the anchor bolt body 1, effectively preventing it from being exposed to the air for a long time, thereby increasing the service life of the exposed screw rod of the anchor bolt body 1, and reducing the rust damage of the exposed screw rod.

[0035] 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 reverse cone die-expanded bottom combined anchor bolt, comprising an anchor bolt body (1) and a protective shell (4), characterized in that: A gasket (2) is sleeved on the screw rod of the anchor bolt body (1), a nut (3) is threadedly sleeved on the screw rod of the anchor bolt body (1), and positioning grooves (31) are respectively provided on both sides of the nut (3); A snap-fitting groove (41) is provided on one side of the protective shell (4), and the snap-fitting groove (41) contacts the nut (3). Positioning openings (42) are provided on both sides of the protective shell (4), and the positioning openings (42) and the positioning grooves (31) contact the connecting block (5). There are two connecting blocks (5). A sliding groove (51) is provided in the connecting block (5), and the two ends of the sliding groove (51) are respectively slidably connected to the operating block (7). A spring (6) is fixed between the two sides of the operating blocks (7) that are close to each other, and a positioning rod (8) is respectively fixed to the two sides of the operating blocks (7) that are away from each other. The top surface and the bottom surface of the positioning opening (42) are respectively provided with snap-fitting grooves (421), and the positioning rod (8) is snap-fitted with the snap-fitting grooves (421).

2. The inverted cone die and under-reamed combined anchor bolt according to claim 1, characterized in that: The positioning opening (42) and the positioning groove (31) are internally connected, and a toggle groove (71) is provided on one side of the operating block (7).

3. The inverted cone die and under-reamed combined anchor bolt according to claim 1, characterized in that: Notches (52) are respectively provided at two ends of one side of the slide groove (51), and the operating block (7) is slidably connected to the notches (52).

4. The inverted cone die and under-reamed combined anchor bolt according to claim 1, characterized in that: Limit blocks (72) are fixedly connected to both sides of the operating block (7), and both ends of both sides of the sliding groove (51) are respectively provided with limit grooves (511), and the limit blocks (72) are slidably connected to the limit grooves (511).

5. The inverted cone die-expanded bottom combined anchor bolt according to claim 1, characterized in that: The top surface and the bottom surface of the sliding groove (51) are respectively provided with sliding grooves (53), and the positioning rod (8) is slidably connected to the sliding groove (53).

6. The inverted cone die and under-reamed combined anchor bolt according to claim 1, wherein: The nut (3) contacts the washer (2).

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