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CN-224223744-U - Handheld ball cage sealing cover expander

CN224223744UCN 224223744 UCN224223744 UCN 224223744UCN-224223744-U

Abstract

A handheld ball cage sealing cover expander is used for installing a straight channel type ball cage transmission shaft sealing cover. One end of each supporting rod is embedded into a groove which is formed in the sliding sleeve in an equally-divided manner, the inner side of the middle of each supporting rod is sleeved on the outer ring of the corresponding fixing ring, two ends of each rib of the corresponding fixing ring are respectively fixed with the inner ring and the outer ring of the corresponding fixing ring, the spring is sleeved on the inner ring of the corresponding fixing ring, two ends of the spring are respectively abutted against the shaft shoulder of the inner ring of the corresponding fixing ring and the end face of the corresponding sliding sleeve, the shaft baffle ring is clamped on the inner ring of the corresponding fixing ring, the sliding sleeve is axially limited, the pin rod penetrates through a hole at the end part of the inner ring of the corresponding fixing ring, the pin rod is fixed with the inner ring of the corresponding fixing ring through the corresponding compression screw, and the pin rod is located in the bent handle hand ring on the corresponding sliding sleeve. The utility model has simple and portable structure, can be operated by hand, can easily insert the expander into the cavity of the ball cage sealing cover to be assembled without an air source in the assembling process of the ball cage sealing cover, can conveniently take down the expander after the assembling is finished, has stable and reliable assembling, and greatly improves the assembling efficiency and quality of the ball cage sealing cover.

Inventors

  • LI DAN
  • LI YUQIANG
  • CHEN CHENG
  • Lv Yuanbing
  • LI WENXI

Assignees

  • 襄阳博亚精工装备股份有限公司

Dates

Publication Date
20260512
Application Date
20250529

Claims (6)

  1. 1. A handheld ball cage seal cover expander is characterized in that one end of a supporting rod (2) is embedded into an equally divided groove (5-1) in a sliding sleeve (5), the inner side of the middle of the supporting rod (2) is sleeved on an outer ring (3-2) of a fixed ring (3), two ends of ribs (3-1) of the fixed ring (3) are respectively fixed with an inner ring (3-3) and an outer ring (3-2) of the fixed ring (3), a spring (4) is sleeved on the inner ring (3-3) of the fixed ring (3), two ends of the spring (4) are respectively abutted against a shaft shoulder of the inner ring (3-3) of the fixed ring (3) and an end face of the sliding sleeve (5), a shaft baffle ring (6) is clamped on the inner ring (3-3) of the fixed ring (3), the sliding sleeve (5) is axially limited, a pin rod (7) penetrates through a hole at the end of the inner ring (3-3) of the fixed ring (3), and a compression screw (8) is used for fixing the pin rod (7) and the inner ring (3-3) to the inner ring (5).
  2. 2. A hand-held ball cage seal cover expander according to claim 1 and wherein said stay (2) Six, for beak shape structure, the middle part arch inboard of every vaulting pole (2) is bored supporting hole (2-1), and vaulting pole (2) are through supporting hole (2-1) cover on outer loop (3-2) of solid fixed ring (3) as the fulcrum, and curved handle bracelet (5-2) on hand pressure sliding sleeve (5) are closed with round pin pole (7), promote vaulting pole (2) and open, expand ball cage sealed cowling (1) to required scope under the combined action of six vaulting poles (2), ball cage sealed cowling (1) are rubber material.
  3. 3. The handheld ball cage seal cover expander as claimed in claim 1, wherein the fixing ring (3) is of a steering disc-shaped structure, and is provided with three equally-divided ribs (3-1) for fixing the inner ring (3-3) and the outer ring (3-2), and the outer ring (3-2) is provided with three equally-divided openings (3-4) for enabling the outer ring (3-2) to be conveniently sleeved into the supporting holes (2-1) on the supporting rods (2).
  4. 4. The handheld ball cage seal cover expander is characterized in that the spring (4) is a conical compression spring, and can axially expand the inner ring (3-3) of the fixed ring (3) and the sliding sleeve (5) and radially support the stay bars (2) so that six stay bars (2) can synchronously move.
  5. 5. The handheld ball cage seal cover expander is characterized in that six equally divided grooves (5-1) are formed in the sliding sleeve (5), the width of the grooves is slightly larger than the thickness of the supporting rods (2), one ends of the six supporting rods (2) are embedded into the grooves (5-1) to enable the supporting rods (2) to be evenly distributed, and bent handle hand rings (5-2) which are convenient to hold are welded at the tail of the sliding sleeve (5).
  6. 6. The handheld ball cage seal cover expander according to claim 1, wherein the stay bar (2) and the sliding sleeve (5) are made of aluminum alloy materials.

Description

Handheld ball cage sealing cover expander Technical Field The utility model relates to the technical field of manufacturing of ball cage transmission shafts, in particular to a handheld ball cage sealing cover expander for installing a straight channel type ball cage transmission shaft sealing cover. Background The ball cage transmission shaft mostly needs to use a rubber sealing cover to prevent dust and seal the ball cage transmission shaft, and various types of ball cage transmission shafts can be installed on a required position only by expanding the sealing cover to a certain extent through the elasticity of rubber. In the conventional straight channel type ball cage transmission shaft manufacturing process, a sealing cover needs to be turned over a spherical surface with a larger outer diameter of the ball cage shaft and fixed at a shaft diameter with a smaller outer diameter. At present, an operation method of operators is to vertically place a ball cage shaft, coat a layer of plastic bag on the spherical surface, brush oil on the spherical surface to reduce the assembly friction force, then sleeve a sealing cover on the plastic bag, grasp two sides of the sealing cover by two hands, and forcefully press the sealing cover to open and turn over the spherical surface to finish the installation. The assembly method is neither elegant nor sanitary, nor laborious. Commercially available pneumatic ball cage expanders are generally eight-jaw structures, but the conventional straight channel ball cage transmission shafts are mostly six-channel. The expander on the market is not suitable for the structure to expand the sealed cowling and shrink the back cover on the eight claws of pneumatic ball cage expander, pneumatic ball cage expander is difficult for deviate from, still needs to insert the air supply, and the operation is extremely inconvenient. Disclosure of Invention In order to overcome the defects of the prior art, the utility model aims to provide the handheld ball cage sealing cover expander so as to realize the purpose of conveniently and quickly installing the straight channel type ball cage transmission shaft sealing cover. In order to achieve the aim, one end of a stay bar of the handheld ball cage seal cover expander is embedded into a groove which is equally divided on a sliding sleeve, the inner side of the middle part of the stay bar is sleeved on an outer ring of a fixed ring, two ends of ribs of the fixed ring are respectively fixed with an inner ring and an outer ring of the fixed ring, a spring is sleeved on the inner ring of the fixed ring, two ends of the spring are respectively abutted against a shaft shoulder of the inner ring of the fixed ring and the end face of the sliding sleeve, a shaft baffle ring is clamped on the inner ring of the fixed ring, the sliding sleeve is axially limited, a pin rod penetrates through a hole at the end part of the inner ring of the fixed ring, the pin rod is fixed with the inner ring of the fixed ring by a compression screw, and the pin rod is positioned in a bent handle hand ring on the sliding sleeve. Further, six supporting rods are of a beak-shaped structure, supporting holes are drilled in the inner side of an arch in the middle of each supporting rod, the supporting rods are sleeved on the outer ring of the fixing ring through the supporting holes to serve as supporting points, a bent handle bracelet on the hand-press sliding sleeve is folded with the pin rod to push the supporting rods to open, and the ball cage sealing cover is expanded to a required range under the combined action of the six supporting rods and is made of rubber. Furthermore, the fixing ring is of a steering disc-shaped structure, three equally-divided ribs are arranged to fix the inner ring and the outer ring, and three equally-divided openings which are used for conveniently sleeving the outer ring into the supporting holes on the supporting rods are arranged on the outer ring. Furthermore, the spring is a conical compression spring, so that the inner ring of the fixed ring and the sliding sleeve can be axially spread, and the support can be provided for the stay bars in the radial direction, so that six stay bars can keep synchronous movement. Further, six equally divided grooves are formed in the sliding sleeve, the width of the grooves is slightly wider than the thickness of the stay bars, one ends of the six stay bars are embedded into the grooves to enable the stay bars to be evenly distributed, and bent handle hand rings convenient to hold are welded at the tail of the sliding sleeve. Furthermore, the stay bar and the sliding sleeve are all made of aluminum alloy materials. When the expander is in a natural shrinkage state, the shaft stop ring limits the sliding sleeve axially, the sliding sleeve is limited in a certain expansion range, the stay bars are inserted into the ball cage sealing cover cavity to be assembled in the shrinkage state of the expander, the bent