High-strength elevator anchor bolt

Abstract

The high-strength elevator anchor bolt comprises a threaded guide shaft used for guiding, a guide expansion head is fixedly arranged at the center of the lower end face of the threaded guide shaft, and four sets of alignment guide blocks are arranged on the upper end face of the guide expansion head at equal intervals. When an elevator workpiece is limited, the locking nut can be in threaded connection with the threaded guide shaft to drive the guide expansion head and the alignment guide block to synchronously lift in the multiple groups of expansion pieces, so that the guide expansion head can expand and open the multiple groups of expansion pieces, and meanwhile, the protection patch and the reinforcing inner plate are subjected to double reinforcement; the overall strength of the interior and the exterior of the expansion piece can be effectively improved, the stability of follow-up workpiece limiting is improved, the four sets of threaded rods are in threaded connection with the threaded rotating grooves, after the expansion piece is limited, secondary press fit can be conducted on the elevator workpiece, and the stability of limiting the elevator workpiece is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator anchor bolt equipment, in particular to a high-strength elevator anchor bolt. Background Art

[0002] Elevator anchor bolts are key fasteners used in elevator installation. They are mainly used to connect elevator tracks or related components to building structures and are fixed to concrete structures through expansion force. They usually consist of an expansion tube and a screw. When the screw is tightened, the expansion tube will expand and press tightly against the concrete hole wall, thereby generating a strong tensile force, which limits the expansion of the expansion tube.

[0003] For example, the utility model patent disclosed in the publication number CN220748745U is an anchor bolt for elevator guide rails, comprising an expansion cylinder and a screw rod, wherein a sealing mechanism is provided at the other end of the expansion cylinder, the sealing mechanism comprising a rubber plate, a sealing cylinder, a connecting ring, a sealing ring, and a positioning assembly, wherein the rubber plate is fixedly connected to the other end of the screw rod, the connecting ring is fixedly connected to the outer wall of the expansion cylinder, the sealing ring is fixedly connected to one side of the sealing cylinder, a sealing groove is provided on the side of the connecting ring close to the nut, the sealing ring is slidably connected to the inner cavity of the sealing groove, the positioning assembly is provided inside the sealing cylinder, and the sealing assembly cooperates with the rubber plate. The utility model utilizes a configuration in which the rubber plate, the sealing cylinder, the connecting ring, the sealing ring, and the positioning assembly cooperate to cover the screw rod and the nut through the sealing cylinder, and to fix the sealing cylinder to the outside of the screw rod and the nut through the positioning assembly, thereby protecting the screw rod and the nut and extending the service life of the entire anchor bolt.

[0004] Although the above-mentioned anchor bolts can limit the elevator accessories, the overall strength of the anchor bolt expansion plate is insufficient. At the same time, after the above-mentioned anchor bolts are limited, it is not convenient to perform secondary limiting on the limit, which reduces the stability of the anchor bolts in installing accessories. Therefore, a high-strength elevator anchor bolt is urgently needed to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a high-strength elevator anchor bolt to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a high-strength elevator anchor bolt, comprising a threaded guide shaft for guiding, a guide expansion head fixedly provided at the center of the lower end face of the threaded guide shaft, and four sets of alignment guide blocks equidistantly provided at the upper end face of the guide expansion head.

[0007] An expansion device, the expansion device being slidably engaged with the outer end surface of the threaded guide shaft;

[0008] A locking nut is threadedly connected to the top of the threaded guide shaft, and a fixing washer is provided on the lower end surface of the locking nut, and four groups of limiting blocks are equidistantly provided on the lower end surface of the fixing washer.

[0009] Preferably, the expansion device includes a limit chuck, a support sleeve is fixedly provided at the center of the lower end surface of the limit chuck, and four groups of expansion plates are equidistantly provided at the lower end surface of the support sleeve, a folding guide groove is provided at the intersection of the support sleeve and the four groups of expansion plates, the inner end surface of the expansion plate is fixedly provided with a reinforcing inner plate, and the outer end surface of the expansion plate is fixedly provided with a protective patch, the outer end surface of the protective patch is equidistantly provided with anti-slip bumps, four groups of threaded rotation grooves are equidistantly provided on the inner end surface of the limit chuck, and a threaded rod is threadedly connected to the inner end surface of the limit chuck, the upper end surface of the threaded rod is fixedly provided with an inner hexagonal rotating plate, the lower end surface of the threaded rod is rotatably clamped to the limiting pressure plate, and a positioning clamping ring is fixedly provided at the center of the upper end surface of the limit chuck.

[0010] Preferably, four groups of snap-fit ​​grooves are equidistantly provided on the upper end surface of the alignment clamping ring, and the alignment clamping ring is adapted to the limiting clamping block through the clamping grooves and then fixedly clamped to the fixed gasket. The limiting of the clamping grooves and the limiting clamping block can improve the stability of the subsequent anti-slip limiting of the locking nut by the fixed gasket.

[0011] Preferably, an alignment groove is provided between the two groups of expansion sheets, and the guide expansion head is adapted to the alignment guide block through the alignment groove and then slidably engaged with the inner end face of the expansion sheet. The docking groove can provide sufficient guiding basis for the alignment guide block, thereby improving the stability of the subsequent guide expansion head sliding inside the expansion sheet.

[0012] Preferably, the four groups of limiting pressure plates are all adapted to the threaded rod through the threaded groove and then threadedly slidably connected to the inner end face of the limiting chuck. After the limiting chuck has completed limiting the workpiece, the staff can rotate the hexagonal rotating plate to enable the limiting pressure plate to provide secondary support to the workpiece, thereby improving the stability of the secondary limiting of the workpiece by the limiting chuck and the expansion plate.

[0013] Preferably, the upper end surface of the guide expansion head is conical and is fitted with the bottom of the expansion sheet, which can effectively improve the stability of expanding and stretching multiple groups of expansion sheets when the guide expansion head is lifted.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. When the utility model limits the elevator workpiece, the locking nut can be threadedly connected with the threaded guide shaft, thereby driving the guide expansion head and the positioning guide block to rise synchronously inside the multiple groups of expansion pieces, so that the guide expansion head can expand and stretch the multiple groups of expansion pieces. At the same time, the double reinforcement of the protective patch and the reinforced inner plate can effectively improve the overall strength of the inside and outside of the expansion piece, and improve the stability of the subsequent workpiece limitation. The threaded connection between the four groups of threaded rods and the threaded groove can perform a second pressing on the elevator workpiece after the expansion piece completes the limitation, effectively improving the stability of the elevator workpiece limitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an exploded view of the main body of the utility model;

[0017] Figure 2 It is a structural diagram of the main body of the utility model;

[0018] Figure 3 This is an exploded view of the expansion device of the present utility model;

[0019] Figure 4 It is a structural schematic diagram of the expansion device of the utility model.

[0020] In the figure: 1-guide expansion head, 2-expansion device, 3-locking nut, 4-fixing gasket, 5-limiting block, 6-threaded guide shaft, 7-aligning guide block, 21-limiting chuck, 22-hexagonal rotating plate, 23-threaded rod, 24-folding guide groove, 25-expansion plate, 26-reinforced inner plate, 27-protective patch, 28-anti-slip bump, 29-support sleeve, 210-threaded rotating groove, 211-limiting pressure plate, 212-aligning clamp ring. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-4 The present invention provides an embodiment of a high-strength elevator anchor bolt, comprising a threaded guide shaft 6 for guiding, a guide expansion head 1 fixedly provided at the center of the lower end surface of the threaded guide shaft 6, and four sets of alignment guide blocks 7 equidistantly provided at the upper end surface of the guide expansion head 1.

[0023] The expansion device 2 is slidably engaged with the outer end surface of the threaded guide shaft 6;

[0024] The locking nut 3 is threadedly connected to the top of the threaded guide shaft 6, and a fixing washer 4 is provided on the lower end surface of the locking nut 3, and four groups of limiting blocks 5 are equidistantly provided on the lower end surface of the fixing washer 4.

[0025] The expansion device 2 includes a limit chuck 21, a support sleeve 29 is fixedly provided at the center of the lower end surface of the limit chuck 21, and four groups of expansion sheets 25 are equidistantly provided at the lower end surface of the support sleeve 29, a folding guide groove 24 is provided at the intersection of the support sleeve 29 and the four groups of expansion sheets 25, the inner end surface of the expansion sheet 25 is fixedly provided with a reinforcing inner plate 26, and the outer end surface of the expansion sheet 25 is fixedly provided with a protective patch 27, and the outer end surface of the protective patch 27 is equidistantly provided with anti-slip bumps 28, four groups of threaded grooves 210 are equidistantly provided on the inner end surface of the limit chuck 21, and the inner end surface of the limit chuck 21 is threadedly connected with a threaded rod 23, the upper end surface of the threaded rod 23 is fixedly provided with an inner hexagonal rotating plate 22, the lower end surface of the threaded rod 23 is rotatably clamped to a limit pressure plate 211, and a positioning clamping ring 212 is fixedly provided at the center of the upper end surface of the limit chuck 21.

[0026] Four groups of snap-fit ​​grooves are equidistantly provided on the upper end surface of the alignment clamping ring 212, and the alignment clamping ring 212 is adapted to the limiting clamping block 5 through the snap-fit ​​grooves and is then fixedly clamped to the fixing gasket 4. The limiting of the snap-fit ​​grooves and the limiting clamping block 5 can improve the stability of the subsequent anti-slip limiting of the locking nut 3 by the fixing gasket 4.

[0027] An alignment groove is provided between the two groups of expansion sheets 25, and the guide expansion head 1 is adapted to the alignment guide block 7 through the alignment groove and then slidably engaged with the inner end face of the expansion sheet 25. The docking groove can provide sufficient guiding basis for the alignment guide block 7, thereby improving the stability of the subsequent sliding of the guide expansion head 1 inside the expansion sheet 25.

[0028] The four groups of limiting pressure plates 211 are all adapted to the threaded rod 23 through the threaded groove 210 and then threadedly connected to the inner end face of the limiting chuck 21. After the limiting chuck 21 has completed limiting the workpiece, the staff can rotate the hexagonal rotating plate 22 to enable the limiting pressure plate 211 to provide secondary support to the workpiece, thereby improving the stability of the secondary limiting of the workpiece by the limiting chuck 21 and the expansion plate 25.

[0029] The upper end surface of the guide expansion head 1 is conical and is fitted with the bottom of the expansion sheet 25 , which can effectively improve the stability of expanding and stretching the multiple groups of expansion sheets 25 when the guide expansion head 1 is lifted.

[0030] Working principle: During use, the user can position the workpiece to be installed in the prefabricated hole at the installation location of the guide elevator, and then insert the expansion device 2 into the prefabricated hole. When the positioning is completed, the staff can guide the fixing gasket 4 through the upper part of the threaded guide shaft 6 to the upper part of the positioning clamping ring 212, and then complete the limitation by adapting the limiting block 5 to the clamping groove. After completing the subsequent anti-slip operation of the locking nut 3, the staff can rotate the locking nut 3 through an external tool. At this time, the locking nut 3 can be limited to the upper part of the fixing gasket 4 as it rotates. When the fixing gasket 4 limits the locking nut 3, As the locking nut 3 rotates, the threaded guide shaft 6 is lifted in the opposite direction, so that the threaded guide shaft 6 can drive the alignment guide block 7 and the guide expansion head 1 at the bottom to rise synchronously. The alignment guide block 7 can radially limit the threaded guide shaft 6 to prevent the threaded guide shaft 6 from rotating sideways, so that the guide expansion head 1 can open multiple groups of expansion sheets 25, thereby completing the limitation of the workpiece. The staff can then insert the tool into the hexagonal rotating plate 22, and then rotate the hexagonal rotating plate 22 and the threaded rod 23, so that the limiting pressure plate 211 can press down on the bottom of the limiting chuck 21, perform secondary limitation on the locked workpiece, and improve the locking stability.

[0031] 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. A high-strength elevator anchor bolt, comprising a threaded guide shaft (6) for guiding, a guide expansion head (1) fixedly provided at the center of the lower end surface of the threaded guide shaft (6), and four sets of alignment guide blocks (7) equidistantly provided at the upper end surface of the guide expansion head (1), characterized in that: An expansion device (2), wherein the expansion device (2) is slidably engaged with the outer end surface of the threaded guide shaft (6); A locking nut (3) is threadedly connected to the top of the threaded guide shaft (6), and a fixing washer (4) is provided on the lower end surface of the locking nut (3), and four groups of limit blocks (5) are equidistantly provided on the lower end surface of the fixing washer (4).

2. A high-strength elevator anchor bolt according to claim 1, characterized in that: The expansion device (2) includes a limiting chuck (21), a support sleeve (29) is fixedly provided at the center of the lower end surface of the limiting chuck (21), and four groups of expansion sheets (25) are equidistantly provided on the lower end surface of the support sleeve (29), a folding guide groove (24) is provided at the intersection of the support sleeve (29) and the four groups of expansion sheets (25), a reinforcing inner plate (26) is fixedly provided on the inner end surface of the expansion sheet (25), and a protective patch (27) is fixedly provided on the outer end surface of the expansion sheet (25). The outer end surface of the protective patch (27) is equidistantly provided with anti-slip protrusions (28), the inner end surface of the limit chuck (21) is equidistantly provided with four groups of threaded grooves (210), and the inner end surface of the limit chuck (21) is threadedly connected with a threaded rod (23), the upper end surface of the threaded rod (23) is fixedly provided with an inner hexagonal rotating plate (22), the lower end surface of the threaded rod (23) is rotatably clamped with a limit pressure plate (211), and a positioning clamping ring (212) is fixedly provided at the center of the upper end surface of the limit chuck (21).

3. The high-strength elevator anchor bolt according to claim 2, characterized in that: Four groups of clamping grooves are equidistantly formed on the upper end surface of the alignment clamping ring (212), and the alignment clamping ring (212) is adapted to the limiting clamping block (5) through the clamping grooves and is then fixedly clamped to the fixing gasket (4).

4. The high-strength elevator anchor bolt according to claim 2, characterized in that: An alignment slot is provided between the two groups of expansion sheets (25), and the guide expansion head (1) is adapted to the alignment guide block (7) through the alignment slot and then slidably engaged with the inner end surface of the expansion sheet (25).

5. The high-strength elevator anchor bolt according to claim 2, characterized in that: The four groups of limiting pressure plates (211) are all adapted to the threaded rod (23) through the threaded groove (210) and are then threadedly slidably connected to the inner end surface of the limiting chuck (21).

6. The high-strength elevator anchor bolt according to claim 2, characterized in that: The upper end surface of the guide expansion head (1) is arranged in a conical shape, and the upper end surface of the guide expansion head (1) is fitted and connected to the bottom of the expansion sheet (25).

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