Anchor bolt for elevator guide rail

Abstract

The anchor bolt comprises a limiting device, a threaded guide shaft, a hexagonal clamping plate, a fixing clamping sleeve, a guide pressing shaft and a connecting sliding shaft, the hexagonal clamping plate is fixedly arranged at the position, close to the top, of the upper end face of the threaded guide shaft, and the connecting sliding shaft is fixedly installed at the center of the lower end face of the hexagonal clamping plate. And a fixed clamping sleeve is fixedly mounted at the center of the lower end surface of the connecting sliding shaft. According to the utility model, through the arrangement of the limiting device, the four groups of barb-shaped limiting pressing plates can be limited in an external mounting hole under the threaded pressing of the guide pressing shaft, and meanwhile, the fixed clamping sleeve can carry out secondary expansion on the jacking clamping plate through the matching of the connecting chamfer and the limiting of the guide clamping plate; and the stability of limiting the limiting pressing plate and the jacking clamping plate in the mounting hole is improved to the maximum extent, and the stability of locking and limiting the elevator guide rail is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator accessories and equipment, in particular to an anchor bolt used for an elevator guide rail. Background Art

[0002] When installing elevator guide rails, anchor bolts are needed for quick positioning and locking operations. Anchor bolts are divided into expansion anchor bolts, expansion anchor bolts, bonding anchor bolts, concrete screws, nails, concrete nails, etc. according to different anchoring mechanisms, which can improve the stability of the installation equipment limit.

[0003] For example, the utility model patent disclosed in the publication number CN217081020U is an anchor bolt for elevator guide rails, which includes an anchor bolt assembly, which is composed of a bolt and an expansion assembly, the expansion assembly is arranged on the outer wall of the bolt, a positioning column is arranged at one end of the bolt, the expansion assembly includes an outer cylinder, the outer cylinder is movably sleeved on the outer wall of the bolt, one end of the outer cylinder is provided with four long strip grooves at intervals, the other end of the bolt is fixedly connected with a conical column, the positioning column can be set as a rhombus, and a through groove is provided in the middle of the positioning column, a chamfer is provided on one side of the conical column, the other end of the outer cylinder is fixedly connected with a limited disc, one end of the bolt is threadedly connected with an extrusion nut, a washer is arranged between the extrusion nut and the limiting disc, and the washer is movably sleeved on the outer wall of the bolt. The utility model can knock the bolt and the expansion assembly into the preset through hole by the staff using a hammer to knock the positioning column, so as to avoid the thread groove at one end of the bolt from being damaged by stress and improve the service life of the anchor bolt.

[0004] Although the above-mentioned anchor bolt can limit the elevator guide rail, the stability of the installation hole and the anchor bolt limit is easily reduced by only a single layer of limitation, and the stability of the subsequent guide rail locking is reduced. Therefore, an anchor bolt for elevator guide rails is urgently needed to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide an anchor bolt used for an elevator guide rail to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: an anchor bolt used for an elevator guide rail, comprising a limit device, a threaded guide shaft, a hexagonal clamping plate, a fixed clamping sleeve, a guide pressing shaft and a connecting sliding shaft,

[0007] A hexagonal clamp is fixedly installed on the upper end surface of the threaded guide shaft near the top, and a connecting slide shaft is fixedly installed at the center of the lower end surface of the hexagonal clamp, a fixed sleeve is fixedly installed at the center of the lower end surface of the connecting slide shaft, and a guide pressure shaft is fixedly installed at the center of the lower end surface of the fixed sleeve, and the outer end surface of the threaded guide shaft is threadedly connected to a limiting device near the bottom of the hexagonal clamp.

[0008] Preferably, the limiting device includes a threaded turntable, the lower end surface of the threaded turntable is provided with four groups of positioning plug-in shafts for positioning, and a supporting sleeve is fixedly installed at the center of the lower end surface of the threaded turntable, and four groups of top pressure clamps are equidistantly arranged on the lower end surface of the supporting sleeve, and guide clamps are arranged on the inner end surfaces of the four groups of top pressure clamps near the supporting sleeve, and a connecting chamfer is provided on the lower end surface of the guide clamp, and the outer end surfaces of the four groups of top pressure clamps are provided with limiting pressure plates.

[0009] Preferably, the guide pressing shaft is arranged in a conical shape, so as to facilitate the subsequent outward expansion of the four sets of top pressing plates.

[0010] Preferably, the connecting sliding shaft does not contact the top pressure card plate, and the fixed sleeve is slidingly connected to the guide card plate through the connecting chamfer, which can facilitate the fixed sleeve to subsequently drive the upper top pressure card plate and the limiting pressure plate to expand outward for the second time through the connecting chamfer and the guide card plate.

[0011] Preferably, the limiting pressure plate is arranged in a barb shape, which can improve the stability of the limiting pressure plate being locked inside the mounting hole.

[0012] Preferably, the outer end surface of the guide pressure shaft is extruded and connected to the inside of the four groups of top pressure clamps, which can improve the stability of the guide rail limit.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model sets a limit device, and four groups of inverted hook-shaped limit pressure plates can be limited to the external mounting hole under the threaded pressing of the guide pressure shaft. At the same time, the fixed sleeve can be connected with the chamfer to cooperate with the limit of the guide card plate to perform secondary expansion on the top pressure card plate, thereby maximizing the stability of the limit pressure plate and the top pressure card plate being limited to the inside of the mounting hole, and improving the stability of the elevator guide rail locking limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a disassembled diagram of the main body of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the main body of the utility model;

[0017] Figure 3 It is a partial enlarged view of location I of the utility model;

[0018] Figure 4 It is a schematic structural diagram of the limiting device of the utility model.

[0019] In the figure: 1-limiting device, 2-threaded guide shaft, 3-hexagonal clamping plate, 4-fixed clamping sleeve, 5-guide pressure shaft, 6-connecting sliding shaft, 11-threaded turntable, 12-positioning plug shaft, 13-support sleeve, 14-limiting pressure plate, 15-top pressure clamping plate, 16-connecting chamfer, 17-guide clamping plate. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-4 The utility model provides an embodiment: an anchor bolt used for an elevator guide rail, comprising a limit device 1, a threaded guide shaft 2, a hexagonal clamping plate 3, a fixed clamping sleeve 4, a guide pressure shaft 5 and a connecting sliding shaft 6,

[0022] A hexagonal clamping plate 3 is fixedly installed near the top of the upper end surface of the threaded guide shaft 2, and a connecting slide shaft 6 is fixedly installed at the center of the lower end surface of the hexagonal clamping plate 3, a fixed sleeve 4 is fixedly installed at the center of the lower end surface of the connecting slide shaft 6, and a guide pressure shaft 5 is fixedly installed at the center of the lower end surface of the fixed sleeve 4. The outer end surface of the threaded guide shaft 2 is threadedly connected to a limiting device 1 near the bottom of the hexagonal clamping plate 3.

[0023] The limiting device 1 includes a threaded turntable 11, the lower end surface of the threaded turntable 11 is provided with four groups of positioning plug shafts 12 for positioning, and a support sleeve 13 is fixedly installed at the center of the lower end surface of the threaded turntable 11, and four groups of top pressure clamps 15 are equidistantly arranged on the lower end surface of the support sleeve 13, and the inner end surfaces of the four groups of top pressure clamps 15 are provided with guide clamps 17 near the support sleeve 13, and the lower end surface of the guide clamps 17 is provided with a connecting chamfer 16, and the outer end surfaces of the four groups of top pressure clamps 15 are provided with limiting pressure plates 14.

[0024] The guide pressing shaft 5 is arranged in a conical shape, so as to facilitate the subsequent outward expansion of the four sets of top pressing clamping plates 15.

[0025] The connecting sliding shaft 6 does not contact the top pressure card plate 15, and the fixed sleeve 4 is slidingly connected with the guide card plate 17 through the connecting chamfer 16, which can facilitate the fixed sleeve 4 to subsequently drive the upper top pressure card plate 15 and the limiting pressure plate 14 to expand outward for the second time through the connecting chamfer 16 and the guide card plate 17.

[0026] The limiting pressure plate 14 is arranged in a barb shape, which can improve the stability of the limiting pressure plate 14 being locked inside the installation hole.

[0027] The outer end surface of the guide pressing shaft 5 is extruded and connected to the inside of the four groups of top pressing clamping plates 15, which can improve the stability of the guide rail limit.

[0028] Working principle: When in use, the user can press the support sleeve 13 down into the guide rail mounting hole, and then limit it through the four sets of positioning plug-in shafts 12 to prevent the threaded turntable 11 from sliding during subsequent rotation. After the positioning is completed, the hexagonal clamping plate 3 is rotated by an external tool. At this time, the hexagonal clamping plate 3 can be threadedly connected with the threaded turntable 11 through the threaded guide shaft 2, thereby driving the fixed clamping sleeve 4 and the guide pressure shaft 5 to retract toward the threaded turntable 11. At this time, the guide pressure shaft 5 can first press the four sets of top pressure clamping plates 15 outward, and then fix them on the mounting hole. Subsequently, when the fixed clamping sleeve 4 moves upward, it can expand the upper top pressure clamping plate 15 for a second time through the connecting chamfer 16 and the guide clamping plate 17, so that the upper and lower limiting pressure plates 14 can be limited to the inside of the mounting hole.

[0029] 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. An anchor bolt for an elevator guide rail, characterized in that: It comprises a limit device (1), a threaded guide shaft (2), a hexagonal clamping plate (3), a fixed clamping sleeve (4), a guide pressing shaft (5) and a connecting sliding shaft (6). A hexagonal clamping plate (3) is fixedly arranged near the top of the upper end surface of the threaded guide shaft (2), and a connecting slide shaft (6) is fixedly installed at the center of the lower end surface of the hexagonal clamping plate (3), a fixed clamping sleeve (4) is fixedly installed at the center of the lower end surface of the connecting slide shaft (6), and a guide pressure shaft (5) is fixedly arranged at the center of the lower end surface of the fixed clamping sleeve (4), and the outer end surface of the threaded guide shaft (2) is threadedly connected to a limiting device (1) near the bottom of the hexagonal clamping plate (3).

2. The anchor bolt for elevator guide rail according to claim 1, characterized in that: The limiting device (1) comprises a threaded turntable (11), the lower end surface of the threaded turntable (11) is provided with four groups of positioning plug shafts (12) for positioning, and a support sleeve (13) is fixedly installed at the center of the lower end surface of the threaded turntable (11), and four groups of top pressure clamping plates (15) are equidistantly arranged at the lower end surface of the support sleeve (13), and the inner end surfaces of the four groups of top pressure clamping plates (15) are all provided with guide clamping plates (17) near the support sleeve (13), and the lower end surface of the guide clamping plates (17) is provided with a connecting chamfer (16), and the outer end surfaces of the four groups of top pressure clamping plates (15) are all provided with limiting pressure plates (14).

3. The anchor bolt for elevator guide rail according to claim 2, characterized in that: The guide pressing shaft (5) is arranged in a conical shape.

4. The anchor bolt for elevator guide rail according to claim 2, characterized in that: The connecting sliding shaft (6) does not contact the top pressing card plate (15), and the fixing card sleeve (4) is slidably connected to the guide card plate (17) via the connecting chamfer (16).

5. The anchor bolt for elevator guide rail according to claim 2, characterized in that: The limiting pressure plate (14) is arranged in a barb shape.

6. The anchor bolt for elevator guide rail according to claim 3, characterized in that: The outer end surface of the guide pressure shaft (5) is extruded and connected to the inside of the four groups of top pressure clamping plates (15).

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