Limiting expansion bolt for elevator

Abstract

The utility model discloses an elevator limiting expansion bolt which comprises a fixing chuck used for supporting, a protective gasket used for preventing skidding is fixedly arranged on the lower end face of the fixing chuck, and a hexagonal rotating plate used for guiding is fixedly connected to the center of the inner end face of the fixing chuck in a clamped mode. A threaded guide sleeve is fixedly arranged at the center of the inner end face of the hexagonal rotating plate. By arranging the guide device, when an elevator accessory is limited, the threaded sliding shaft can drive the fixed rotating shaft and the connecting rotating sleeve to be lifted through threaded connection with the threaded guide sleeve, so that the connecting rotating sleeve can drive the six groups of expansion base plates to be bent in all directions through sliding limiting of the six groups of alignment sliding blocks and the positioning chutes; the positioning skewed slot which is arranged in an oblique angle mode can enable the expansion base plate to be bent to be perpendicular to the supporting barrel body, the limiting and supporting area of the bottom of the elevator accessory can be increased to the maximum degree, and then the stability of installing and limiting the elevator accessory by the bolt in the follow-up process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator expansion bolt equipment technical field, concretely is a kind of elevator limiting expansion bolt. BACKGROUND

[0002] Elevator expansion bolt, as the fastener in elevator installation, plays the key role of ensuring the stability and safety of elevator structure, elevator expansion bolt, also known as elevator wall gecko or elevator plug, is a kind of bolt that uses wedge inclination to promote expansion to generate friction gripping force, so as to achieve fastening effect.

[0003] Such as the utility model patent disclosed in the publication No. CN207921074U, a kind of elevator limiting expansion bolt, by bolt segment and taper head section and the nut of bolt segment engagement installation, the expansion sleeve coaxially sleeved in taper head section, bolt segment and taper head section are made into one, there is a coaxial boss between bolt segment and taper head section, expansion sleeve is coaxially sleeved between the boss and taper head, the outer diameter of boss is greater than the outer diameter of expansion sleeve. Expansion sleeve left end is uniformly distributed and spaced in axial direction and is provided with long and narrow opening slot, the two opening parts of opening slot are provided with outward inclination, and U-shaped slot with slightly larger diameter than the distance between the two sides of opening slot is connected in the inside of opening slot. There is a groove in the right end of expansion sleeve coaxially with opening slot, and a limiting block is made in the inside of groove on boss. The expansion bolt is made with a coaxial boss between bolt segment and taper head section, and a limiting block is made on the boss, which not only prevents the sleeve from sliding in the axial direction, but also prevents the sleeve from rotating in the radial direction, and limits the expansion sleeve.

[0004] Although the above-mentioned expansion bolt can fix the elevator accessories, the angle of the tapered head of the above-mentioned expansion bolt is low, which makes the expansion sleeve have insufficient support area for limiting the installation of the elevator accessories, thereby reducing the stability of the subsequent limiting of the elevator accessories, so an elevator limiting expansion bolt is needed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an elevator limiting expansion bolt to solve the problems raised in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an elevator limiting expansion bolt, comprising a fixing chuck for supporting, a protective gasket for preventing slipping is fixedly arranged on the lower end surface of the fixing chuck, a hexagonal rotating plate for guiding is fixedly connected at the center of the inner end surface of the fixing chuck, a threaded guide sleeve is fixedly arranged at the center of the inner end surface of the hexagonal rotating plate,

[0007] Supporting cylinder, the supporting cylinder is fixedly arranged at the center of the lower end face of the fixed chuck, and six groups of expansion pads are arranged equidistantly on the lower end face of the supporting cylinder, and a positioning inclined groove is arranged at the center of the inner end face of each of the six groups of expansion pads;

[0008] Bending guide groove, the bending guide groove is arranged at the junction of the expansion pad and the supporting cylinder;

[0009] Guide device, the guide device is connected in the inner end face of the supporting cylinder through the threaded guide sleeve.

[0010] Preferably, the guide device comprises an inner hexagonal turntable, a threaded sliding shaft is fixedly arranged at the center of the lower end face of the inner hexagonal turntable, a fixed rotating shaft is fixedly arranged at the bottom of the threaded sliding shaft, a connecting rotating sleeve is rotatably connected to the lower end face of the fixed rotating shaft, a limiting rotating groove is arranged at the center of the inner end face of the connecting rotating sleeve, and six groups of alignment sliding blocks are equidistantly arranged on the side end face of the connecting rotating sleeve.

[0011] Preferably, the cross section of the positioning inclined groove is arranged in an inclined shape, which can effectively improve the stability of the alignment sliding block guide, and the inclined positioning inclined groove also has enough space to drive the expansion pad to support and move out.

[0012] Preferably, the alignment sliding block is slidably connected to the expansion pad through the positioning inclined groove, which can effectively improve the stability of the subsequent multiple groups of expansion pads in limiting and connecting the elevator accessories.

[0013] Preferably, the connecting rotating sleeve is matched with the threaded guide sleeve through the threaded sliding shaft, so as to drive the six groups of alignment sliding blocks to lift and move in the positioning inclined groove, and the threaded connection between the threaded sliding shaft and the threaded guide sleeve can conveniently lift the connecting rotating sleeve through the threaded sliding shaft, and then drive the expansion pad to move out through the six groups of alignment sliding blocks.

[0014] Preferably, the cross sections of the fixed rotating shaft and the limiting rotating groove are both arranged in a T shape, and the fixed rotating shaft is rotatably connected to the connecting rotating sleeve through the limiting rotating groove, and the T-shaped limiting rotating groove and the fixed rotating shaft can effectively improve the stability of the subsequent threaded sliding shaft and the connecting rotating sleeve in rotatably connecting.

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

[0016] 1. The utility model discloses a guide device is set, when limiting elevator fittings, threaded slide axle can pass through the threaded connection with threaded guide bushing, and then drive fixed pivot and the lifting of connecting sleeve, make connecting sleeve can pass through six groups of alignment sliding block and the sliding limit of positioning inclined groove, and then drive six groups of expansion pad to all -round bending, and the positioning inclined groove of inclined angle setting can make expansion pad bend to support cylinder vertical, can maximum degree has improved the limit support area of elevator fittings bottom, and then improved the stability of bolt subsequent installation limit to elevator fittings. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the split drawing of the main body of the utility model;

[0018] Figure 2 It is the structure schematic view of the main body of the utility model;

[0019] Figure 3 It is the split drawing of the guide device of the utility model;

[0020] Figure 4 It is the structure schematic view of the guide device of the utility model.

[0021] In the drawing: 1 - hexagonal turn plate, 2 - guide device, 3 - positioning inclined groove, 4 - expansion pad, 5 - bending guide groove, 6 - support cylinder, 7 - protective gasket, 8 - fixed chuck, 9 - threaded guide bushing, 21 - internal hexagonal turntable, 22 - threaded slide axle, 23 - limit turn groove, 24 - alignment sliding block, 25 - connecting sleeve, 26 - fixed pivot. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0023] Please refer to Figures 1-4 The utility model provides an embodiment: a kind of elevator limit expansion bolt, including the fixed chuck 8 for support, the lower end surface of fixed chuck 8 is fixedly provided with the protective gasket 7 for antiskid, and the inner end surface center of fixed chuck 8 is fixedly connected with the hexagonal turn plate 1 for guiding, the inner end surface center of hexagonal turn plate 1 is fixedly provided with threaded guide bushing 9,

[0024] The support cylinder 6 is fixedly arranged at the center of the lower end face of the fixed chuck 8, and six sets of expansion pads 4 are arranged equidistantly on the lower end face of the support cylinder 6. A positioning inclined groove 3 is arranged at the center of the inner end face of each of the six sets of expansion pads 4.

[0025] The bending guide groove 5 is arranged at the junction of the expansion pad 4 and the support cylinder 6.

[0026] The guide device 2 is threadedly and slidingly connected to the inner end face of the support cylinder 6 through a threaded guide sleeve 9.

[0027] The guide device 2 comprises an inner hexagonal turntable 21, a threaded sliding shaft 22 is fixedly arranged at the center of the lower end face of the inner hexagonal turntable 21, and a fixed rotating shaft 26 is fixedly arranged at the bottom of the threaded sliding shaft 22. A connecting rotating sleeve 25 is rotationally connected to the lower end face of the fixed rotating shaft 26, a limiting rotating groove 23 is arranged at the center of the inner end face of the connecting rotating sleeve 25, and six sets of alignment sliding blocks 24 are arranged equidistantly on the side end face of the connecting rotating sleeve 25.

[0028] The cross section of the positioning inclined groove 3 is arranged in an inclined shape, which can effectively improve the stability of the guidance of the alignment sliding block 24, and the inclined positioning inclined groove 3 also has enough space to drive the expansion pad 4 to support and move outward.

[0029] The alignment sliding block 24 is slidingly connected to the expansion pad 4 through the positioning inclined groove 3, which can effectively improve the stability of the subsequent multiple sets of expansion pads 4 in limiting and connecting the elevator accessories.

[0030] The connecting rotating sleeve 25 is adapted to the threaded guide sleeve 9 through the threaded sliding shaft 22, thereby driving the six sets of alignment sliding blocks 24 to lift and move within the positioning inclined groove 3. The threaded connection between the threaded sliding shaft 22 and the threaded guide sleeve 9 can conveniently lift the connecting rotating sleeve 25 through the threaded sliding shaft 22, and then drive the expansion pad 4 to move outward through the six sets of alignment sliding blocks 24.

[0031] The cross sections of the fixed rotating shaft 26 and the limiting rotating groove 23 are both arranged in a T shape, and the fixed rotating shaft 26 is rotationally connected to the connecting rotating sleeve 25 through the limiting rotating groove 23. The T-shaped limiting rotating groove 23 and the fixed rotating shaft 26 can effectively improve the stability of the subsequent rotational connection between the threaded sliding shaft 22 and the connecting rotating sleeve 25.

[0032] Working principle: in the use, if need to install the elevator workpiece limit operation, the user can be positioned to the appropriate elevator fittings and installation area of the precast hole in the bolt, then the bolt is inserted, in fastening, workers can be inserted into the tool inside the inner hexagonal turntable 21, then rotate the inner hexagonal turnplate 21, the inner hexagonal turnplate 21 can drive the threaded slide shaft 22 to rotate, while the threaded slide shaft 22 is rotated, can be connected with threaded guide sleeve 9, in order to drive the fixed shaft 26 to lift, the fixed shaft 26 can drive six sets of alignment slider 24 synchronous lifting through the connection of the sleeve 25 at this time, six sets of alignment slider 24 can be through the sliding limit of the positioning chute 3, in order to drive six sets of expansion pad 4 synchronous centrifugal outward, when the alignment slider 24 displacement to the top of the positioning chute 3, the alignment slider 24 can extrude six sets of expansion pad 4 to the limit, that is, six sets of expansion pad 4 and support cylinder 6 is horizontally arranged, thereby improving the stability of the installation of the elevator workpiece to the maximum extent.

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

Claims

1. An elevator limited expansion bolt, comprising a fixed chuck (8) for support, a protective gasket (7) for anti-slip fixedly provided on the lower end surface of the fixed chuck (8), a hexagonal rotating plate (1) for guiding fixedly clamped at the center of the inner end surface of the fixed chuck (8), and a threaded guide sleeve (9) fixedly provided at the center of the inner end surface of the hexagonal rotating plate (1), characterized in that: A support cylinder (6), the support cylinder (6) being fixedly arranged at the center of the lower end surface of the fixed chuck (8), and six groups of expansion pads (4) being equidistantly arranged at the lower end surface of the support cylinder (6), and positioning inclined grooves (3) being provided at the centers of the inner end surfaces of the six groups of expansion pads (4); A bending guide groove (5), wherein the bending guide groove (5) is provided at the junction of the expansion pad (4) and the support cylinder (6); A guide device (2) is connected to the inner end surface of the support cylinder (6) through the threaded guide sleeve (9) and then threadedly slidingly connected.

2. The elevator limited expansion bolt according to claim 1, characterized in that: The guide device (2) comprises an inner hexagonal turntable (21), a threaded sliding shaft (22) is fixedly provided at the center of the lower end surface of the inner hexagonal turntable (21), and a fixed rotating shaft (26) is fixedly provided at the bottom of the threaded sliding shaft (22), a connecting rotating sleeve (25) is rotatably engaged with the lower end surface of the fixed rotating shaft (26), and a limited rotation groove (23) is provided at the center of the inner end surface of the connecting rotating sleeve (25), and six groups of alignment sliders (24) are equidistantly provided on the side end surface of the connecting rotating sleeve (25).

3. The elevator limited expansion bolt according to claim 2, characterized in that: The cross section of the positioning inclined groove (3) is arranged in an inclined shape.

4. The elevator limited expansion bolt according to claim 2, characterized in that: The alignment slider (24) is slidably engaged with the expansion pad (4) through the positioning inclined groove (3).

5. The elevator limited expansion bolt according to claim 2, characterized in that: The connecting rotating sleeve (25) is adapted to the threaded guide sleeve (9) via the threaded sliding shaft (22), thereby driving the six groups of alignment sliding blocks (24) to lift and move inside the positioning inclined groove (3).

6. The elevator limited expansion bolt according to claim 2, characterized in that: The cross sections of the fixed rotating shaft (26) and the limiting rotating groove (23) are both T-shaped, and the fixed rotating shaft (26) is rotatably connected to the connecting rotating sleeve (25) through the limiting rotating groove (23).

Images