Anchor bolt with anti-scratching mechanism at end part

Abstract

The utility model discloses an anchor bolt with an anti-scratching mechanism at the end part, which comprises a supporting device for supporting, a fixed rotating sleeve is fixedly clamped at the top of the inner end surface of the supporting device, and a threaded guide groove for guiding is arranged on the inner end surface of the fixed rotating sleeve. According to the utility model, the inner hexagonal rotating plate and the limiting pressure plate are rotatably clamped and limited, so that when a workpiece is limited and connected, the inner hexagonal rotating plate can automatically drive the expansion conical head to limit and clamp a plurality of groups of expansion sheets through the fixed guide plate, thereby improving the convenience and stability of subsequently limiting and butting external workpieces; meanwhile, the inner hexagonal rotating plate can effectively improve the protection performance and the sealing performance of the input end of the anchor bolt, and the service life of the whole anchor bolt is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor bolt equipment, in particular to an anchor bolt with an anti-scratch mechanism at the end. Background Art

[0002] Anchor bolts are a general term for all post-anchoring components and are widely used in many fields such as construction, mining, tunnel engineering, and equipment installation. Anchor bolts mainly use the relative movement of the cone and the expansion piece (or expansion sleeve) to cause the expansion piece to expand, generating expansion and extrusion force with the concrete of the hole wall, and generating pull-out force through shear friction to achieve anchoring of the connected parts.

[0003] For example, the utility model patent disclosed in publication number CN217081020U discloses an elevator guide rail anchor bolt, comprising an anchor bolt assembly, the anchor bolt assembly comprising a bolt and an expansion assembly, the expansion assembly being disposed on the outer wall of the bolt, a positioning column being provided at one end of the bolt, the expansion assembly comprising an outer cylinder movably sleeved on the outer wall of the bolt, four elongated slots being spaced apart at one end of the outer cylinder, a tapered column being fixedly connected to the other end of the bolt, the positioning column being configured as a diamond shape, a through slot being provided in the middle of the positioning column, a rounded corner being provided on one side of the tapered column, a limiting disc being fixedly connected to the other end of the outer cylinder, an extrusion nut being threadedly connected to one end of the bolt, a washer being provided between the extrusion nut and the limiting disc, the washer being movably sleeved on the outer wall of the bolt. The utility model allows a worker to hammer the positioning column with a hammer to drive the bolt and expansion assembly into a predetermined through hole, thereby preventing stress damage to the thread groove at one end of the bolt and thereby increasing the service life of the anchor bolt.

[0004] Although the above-mentioned anchor bolt can limit the elevator workpiece, it is not convenient to perform protective operations on the end of the anchor bolt after the limiting operation is completed. At the same time, the convenience of limiting the anchor bolt is also insufficient, which reduces the convenience and practical performance of the anchor bolt. Therefore, there is an urgent need for an anchor bolt with an anti-scratch mechanism at the end to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the present utility model is to provide an anchor bolt with an anti-scratch mechanism at the end thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an anchor bolt with an anti-scratch mechanism at its end, comprising a support device for supporting, a fixed rotating sleeve fixedly connected to the top of the inner end surface of the support device, and a threaded guide groove for guiding is provided on the inner end surface of the fixed rotating sleeve.

[0007] A support card shaft, the support card shaft is slidably connected to the inner end surface of the support device, and a fixed sliding groove is opened at the center of the top of the support card shaft, and a threaded guide shaft is opened at the top of the side end surface of the support card shaft;

[0008] A limit clamp shaft, the limit clamp shaft is fixedly arranged near the middle of the outer end surface of the support clamp shaft, and an expansion cone head is fixedly arranged at the center of the lower end surface of the support clamp shaft;

[0009] The limiting device is sealed and rotatably connected to the upper end surface of the supporting device through the fixed sliding groove.

[0010] Preferably, the limiting device includes a hexagonal rotating plate, a positioning guide shaft is fixedly provided at the center of the lower end surface of the hexagonal rotating plate, and a spring clamping shaft is fixedly provided at the center of the lower end surface of the positioning guide shaft, and a fixed guide plate is fixedly provided at the bottom of the spring clamping shaft.

[0011] Preferably, the supporting device includes a limiting pressure plate, an alignment guide groove is provided near the middle of the inner end surface of the limiting pressure plate, and a supporting tube is fixedly arranged at the center of the lower end surface of the limiting pressure plate, expansion plates are equidistantly arranged on the lower end surface of the supporting tube, and protective sleeves are fixedly arranged on the outer end surfaces of the expansion plates and the supporting tube.

[0012] Preferably, the support clamping shaft is adapted to the alignment guide groove through the limit clamping shaft and then slidably clamped on the inner end surface of the support tube, which can effectively improve the stability of subsequent up and down displacement of the support clamping shaft inside the support device.

[0013] Preferably, the fixed guide plate is slidably engaged with the inside of the supporting clamping shaft through the fixed slide groove, and the fixed guide plate is fit-connected with the top of the inner end surface of the fixed slide groove. When in use, the spring clamping shaft elastically contracts, so that the hexagonal rotating plate can be stably limited to the outside of the limiting pressure plate, thereby improving the protection performance of the outside of the limiting pressure plate.

[0014] Preferably, the hexagonal rotating plate is sealed and rotated with the limiting pressure plate, and the supporting clamping shaft is threadedly connected to the fixed rotating sleeve through the threaded guide shaft. The threaded connection between the threaded guide groove inside the fixed rotating sleeve and the threaded guide shaft can facilitate the subsequent limiting device to drive the supporting clamping shaft to perform threaded lifting, thereby improving the stability of the folding and limiting of the expansion plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The utility model can limit the position by rotating the hexagonal rotating plate and the limiting pressure plate, so that when the workpiece is limited and connected, the hexagonal rotating plate can automatically drive the expansion cone head to limit and connect multiple groups of expansion plates through the fixed guide plate, thereby improving the convenience and stability of subsequent limited docking of external workpieces. At the same time, the hexagonal rotating plate can effectively improve the protection and sealing of the input end of the anchor bolt, thereby increasing the overall service life of the anchor bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded view of the main body of the utility model;

[0018] Figure 2 It is a structural diagram of the main body of the utility model;

[0019] Figure 3 This is a schematic structural diagram of the limiting device of the present utility model;

[0020] Figure 4 This is a disassembled diagram of the support device of the present utility model.

[0021] In the figure: 1-fixed rotating sleeve, 2-limiting device, 3-thread guide groove, 4-fixed slide groove, 5-support device, 6-expansion cone head, 7-support clamping shaft, 8-limiting clamping shaft, 9-thread guide shaft, 21-hexagonal rotating plate, 22-spring clamping shaft, 23-fixed guide plate, 24-positioning guide shaft, 51-protective sleeve, 52-expansion sheet, 53-support cylinder, 54-alignment guide groove, 55-limiting pressure plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The present invention provides an embodiment of an anchor bolt with an anti-scratch mechanism at its end, comprising a support device 5 for supporting, a fixed rotating sleeve 1 fixedly connected to the top of the inner end surface of the support device 5, and a threaded guide groove 3 for guiding is provided on the inner end surface of the fixed rotating sleeve 1.

[0024] The support card shaft 7 is slidably connected to the inner end surface of the support device 5, and a fixed slide groove 4 is opened at the center of the top of the support card shaft 7, and a threaded guide shaft 9 is opened at the top of the side end surface of the support card shaft 7;

[0025] The limiting clamp shaft 8 is fixedly arranged near the middle of the outer end surface of the supporting clamp shaft 7, and an expansion cone head 6 is fixedly arranged at the center of the lower end surface of the supporting clamp shaft 7;

[0026] The limiting device 2 is fixed in the sliding groove 4 and is sealed and rotated to be clamped on the upper end surface of the supporting device 5.

[0027] The limiting device 2 includes a hexagonal rotating plate 21, a positioning guide shaft 24 is fixedly provided at the center of the lower end surface of the hexagonal rotating plate 21, and a spring clamping shaft 22 is fixedly provided at the center of the lower end surface of the positioning guide shaft 24, and a fixed guide plate 23 is fixedly provided at the bottom of the spring clamping shaft 22.

[0028] The supporting device 5 includes a limiting pressure plate 55, an inner end surface of the limiting pressure plate 55 is provided with an alignment guide groove 54 near the middle, and a supporting tube 53 is fixedly arranged at the center of the lower end surface of the limiting pressure plate 55, and expansion plates 52 are equidistantly arranged on the lower end surface of the supporting tube 53, and a protective shell 51 is fixedly arranged on the outer end surfaces of the expansion plates 52 and the supporting tube 53.

[0029] The support clamping shaft 7 is adapted to the alignment guide groove 54 through the limiting clamping shaft 8 and then slidably clamped on the inner end surface of the support tube 53, which can effectively improve the stability of the subsequent up and down displacement of the support clamping shaft 7 inside the support device 5.

[0030] The fixed guide plate 23 is slidably engaged with the inside of the supporting clamping shaft 7 through the fixed slide groove 4, and the fixed guide plate 23 is fitly connected to the top of the inner end surface of the fixed slide groove 4. When in use, the spring clamping shaft 22 elastically contracts, so that the hexagonal rotating plate 21 can be stably limited to the outside of the limiting pressure plate 55, thereby improving the protection performance of the outside of the limiting pressure plate 55.

[0031] The hexagonal rotating plate 21 is sealed and rotated with the limiting pressure plate 55, and the supporting clamping shaft 7 is threadedly connected to the fixed rotating sleeve 1 through the threaded guide shaft 9. The threaded connection between the threaded guide groove 3 inside the fixed rotating sleeve 1 and the threaded guide shaft 9 can facilitate the subsequent limiting device 2 to drive the supporting clamping shaft 7 to perform threaded lifting, thereby improving the stability of the folding and limiting of the expansion piece 52.

[0032] Working principle: When in use, the staff can position the anchor bolt body and the required limiting tool to the installation hole position, and then when performing the installation limit, the staff can insert the required rotating tool into the inner hexagonal rotating plate 21, and then rotate it. When rotating, the inner hexagonal rotating plate 21 can drive the positioning guide shaft 24 to rotate, and at the same time, the positioning guide shaft 24 can synchronously drive the fixed slide 4 and the threaded guide shaft 9 to rotate through the fixed guide plate 23, so that the threaded guide shaft 9 can pass through the thread of the threaded guide groove 3 inside the stationary fixed rotating sleeve 1 The expansion cone head 6 is connected, thereby driving the supporting clamping shaft 7 and the expansion cone head 6 to rise upward. At this time, the expansion cone head 6 can synchronously drive multiple groups of expansion pieces 52 to move outward, so that the expansion pieces 52 can form a limiting structure for the workpiece. As the threaded guide shaft 9 rotates inside the threaded guide groove 3, until the expansion cone head 6 drives the multiple groups of expansion pieces 52 to move outward to the limit position, the workpiece is completely limited. At this time, the inner hexagonal rotating plate 21 is still in contact with the outside of the limiting pressure plate 55 for protection, thereby ensuring the sealing protection of the anchor bolt end and the interior, and improving the stability of subsequent use.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anchor bolt with an anti-scratch mechanism at its end, comprising a supporting device (5) for supporting, a fixed rotating sleeve (1) fixedly connected to the top of the inner end surface of the supporting device (5), and a threaded guide groove (3) for guiding is provided on the inner end surface of the fixed rotating sleeve (1), characterized in that: A support clamping shaft (7), the support clamping shaft (7) is slidably clamped on the inner end surface of the support device (5), and a fixed sliding groove (4) is provided at the center of the top of the support clamping shaft (7), and a threaded guide shaft (9) is provided at the top of the side end surface of the support clamping shaft (7); A limiting clamping shaft (8), wherein the limiting clamping shaft (8) is fixedly arranged near the middle of the outer end surface of the supporting clamping shaft (7), and an expansion cone head (6) is fixedly arranged at the center of the lower end surface of the supporting clamping shaft (7); A limiting device (2) is provided, wherein the limiting device (2) is sealed and rotatably engaged with the upper end surface of the supporting device (5) through the fixed sliding groove (4).

2. The anchor bolt having an anti-scratch mechanism at the end according to claim 1, characterized in that: The limiting device (2) comprises a hexagonal rotating plate (21), a positioning guide shaft (24) is fixedly provided at the center of the lower end surface of the hexagonal rotating plate (21), and a spring clamping shaft (22) is fixedly provided at the center of the lower end surface of the positioning guide shaft (24), and a fixed guide plate (23) is fixedly provided at the bottom of the spring clamping shaft (22).

3. The anchor bolt with an anti-scratch mechanism at the end according to claim 2, characterized in that: The support device (5) includes a limiting pressure plate (55), an alignment guide groove (54) is provided near the middle of the inner end surface of the limiting pressure plate (55), and a support tube (53) is fixedly provided at the center of the lower end surface of the limiting pressure plate (55), expansion plates (52) are equidistantly provided on the lower end surface of the support tube (53), and a protective shell (51) is fixedly provided on the outer end surface of the expansion plate (52) and the support tube (53).

4. The anchor bolt having an anti-scratch mechanism at the end according to claim 3, characterized in that: The support clamping shaft (7) is adapted to the alignment guide groove (54) through the limiting clamping shaft (8) and is then slidably clamped on the inner end surface of the support cylinder (53).

5. The anchor bolt with an anti-scratch mechanism at the end according to claim 3, characterized in that: The fixed guide plate (23) is slidably engaged with the interior of the support clamping shaft (7) through the fixed sliding groove (4), and the fixed guide plate (23) is fitted and connected with the top of the inner end surface of the fixed sliding groove (4).

6. The anchor bolt with an anti-scratch mechanism at the end according to claim 3, characterized in that: The hexagonal rotating plate (21) is sealed and rotatably engaged with the limiting pressure plate (55), and the supporting clamping shaft (7) is threadedly connected with the fixed rotating sleeve (1) via the threaded guide shaft (9).

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