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CN-224214575-U - Self-balancing pulley block

CN224214575UCN 224214575 UCN224214575 UCN 224214575UCN-224214575-U

Abstract

The utility model discloses a self-balancing pulley block which is characterized by comprising a pulley bearing main body and a pulley assembly, wherein a pulley groove and a bearing shaft are arranged on the side part of the pulley bearing main body, the pulley assembly is movably arranged in the pulley groove, the pulley assembly is rotationally connected with the pulley bearing main body through the bearing shaft, a plurality of positioning wheels are arranged on the outer side of the pulley bearing main body and used for being in contact with the inner side wall of a guide rail groove, and the pulley bearing main body is guided to move along the guide rail groove so as to avoid the phenomenon of locking. The utility model realizes automatic balance adjustment of height, and can slide smoothly under the condition of uneven guide rail, and the positioning wheel can guide movement, so that the clamping is avoided, and the utility model is stable and reliable in whole, convenient to assemble and disassemble and smooth in operation.

Inventors

  • FENG BAOWEI
  • CAI CHAOMING

Assignees

  • 知初建筑科技(广东)有限公司

Dates

Publication Date
20260508
Application Date
20250710

Claims (7)

  1. 1. A self-balancing pulley block is characterized by comprising a pulley bearing body and a pulley assembly, wherein a pulley groove and a bearing shaft are arranged on the side part of the pulley bearing body, the pulley assembly is movably arranged in the pulley groove, the pulley assembly is rotationally connected with the pulley bearing body through the bearing shaft, and a plurality of positioning wheels are arranged on the outer side of the pulley bearing body and used for being in contact with the inner side wall of a guide rail groove to guide the pulley bearing body to move along the guide rail groove.
  2. 2. A self-balancing pulley block as claimed in claim 1, wherein the pulley bearing body is provided with pulley grooves and corresponding pulley assemblies on both the left and right sides.
  3. 3. The self-balancing pulley block according to claim 2, wherein the pulley assembly comprises a pulley housing and at least more than two pulley members mounted in the pulley housing by shafts, and a shaft hole for accommodating the shaft to pass through is formed in the middle of the pulley housing.
  4. 4. A self-balancing pulley block as claimed in claim 3, wherein the pulley groove is provided with an arcuate recess at an end thereof corresponding to the pulley member.
  5. 5. A self-balancing pulley block as claimed in claim 1, wherein the pulley bearing body is provided with positioning wheel mounting grooves on the left front side and the left rear side, the right front side and the right front side, and the positioning wheels are horizontally mounted in the positioning wheel mounting grooves.
  6. 6. The self-balancing pulley block according to claim 1, wherein the top of the pulley bearing body is provided with a groove, more than two holes are arranged in the groove, and spring pins are arranged in the holes.
  7. 7. A self-balancing pulley block according to claim 1, wherein the pulley load-bearing body is an integrally constructed aluminum alloy block.

Description

Self-balancing pulley block Technical Field The utility model relates to the technical field of pulleys, in particular to a self-balancing pulley block. Background In the long-term use process of the pulley track, the pulley track is easy to deform due to the influence of external force (such as collision), temperature change (deformation of the track caused by thermal expansion and contraction), aging of the material (rigidity of the track is reduced after long-term use) and other factors, so that the track cannot always keep a horizontal state. Under the condition, when the pulley slides in the track, the problems of uneven height and uneven sliding of the pulley can occur frequently, so that normal use is affected, larger noise and vibration are generated, the service life of the pulley can be shortened due to uneven stress, and the maintenance cost is increased. In the prior art, a pulley with a self-balancing function is generally adopted to adjust the relative height of the wheel in the sliding process, so that the pulley and a sliding door connected with the pulley slide stably. For example, CN211573068U discloses a self-balancing pulley, which comprises a main body, a transverse hole nut, two fixing plates, wheels, and wheels, wherein the middle part of the main body is provided with a transverse through hole, the transverse hole nut is accommodated in the transverse through hole, the two fixing plates are hinged to two opposite sides of the main body through two ends of the transverse hole nut, and the wheels are arranged on the fixing plates and are positioned at two sides of the hinge point of the fixing plates and the transverse hole nut. The self-balancing pulley has better bearing effect in the track, and is silent in sliding and more convenient to install. However, the disadvantage is that some problems exist in the practical use, because the sliding rail may have bending deformation to a certain extent due to installation errors, foundation settlement and other reasons when being installed, and at this time, if the automatic balance adjustment is only performed on the height of the pulley, the sliding problem cannot be completely solved, and the phenomenon that the pulley is blocked when the sliding rail slides still can be caused, so that the normal operation of the equipment is affected. Accordingly, there is a need for further improvements over existing self-balancing pulley structures. Disclosure of Invention The utility model aims to solve the defects of the prior art and provides a stable and reliable self-balancing pulley block which is convenient to assemble and disassemble and smooth to operate. The self-balancing pulley block is characterized by comprising a pulley bearing main body and a pulley assembly, wherein a pulley groove and a bearing shaft are arranged on the side part of the pulley bearing main body, the pulley assembly is movably arranged in the pulley groove and is rotationally connected with the pulley bearing main body through the bearing shaft, a plurality of positioning wheels are arranged on the outer side of the pulley bearing main body and are used for being in contact with the inner side wall of a guide rail groove, and the pulley bearing main body is guided to move along the guide rail groove so as to avoid the phenomenon of blocking. By further describing the scheme, the pulley grooves and the corresponding pulley assemblies are arranged on the left side and the right side of the pulley bearing main body, and the double-row pulley assemblies greatly improve the overall bearing capacity of the pulley, can better bear the weight of the connecting part, increase the stability of the connecting part such as a door leaf in the sliding process, and reduce shaking. Further, the pulley component comprises a pulley shell and at least more than two pulley pieces which are arranged in the pulley shell through shafts, a shaft hole for accommodating the bearing shaft to penetrate is formed in the middle of the pulley shell, the pulley shell wraps the pulley pieces, contact between the pulley pieces and the outside is reduced as much as possible, and sand and dust particles outside are effectively prevented from entering the pulley pieces, so that the service life of the pulley pieces is greatly prolonged. Further, the end part of the pulley groove is provided with the arc-shaped concave position, and the arc-shaped concave position corresponds to the pulley piece, so that the pulley piece and the end part of the pulley groove are prevented from being contacted in the rotation process of the pulley assembly, unnecessary friction and collision are reduced, and smooth rotation of the pulley assembly is ensured. Further, the left front side and the left rear side, the right front side and the right front side of the pulley bearing main body are respectively provided with a positioning wheel mounting groove, and the positioning wheels are horizontally arranged in the positionin