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CN-117943814-B - Installation and dismounting device for inner hole bushing of part

CN117943814BCN 117943814 BCN117943814 BCN 117943814BCN-117943814-B

Abstract

The invention discloses an installation and disassembly device for an inner hole bushing of a part, wherein a shell and a sliding rail are fixed at the upper end and the lower end of one end of a fixed support, which is provided with an optical axis, the lower end of a sliding block is slidably embedded into a T-shaped through groove of the sliding rail, the upper end of the sliding block penetrates into a square groove of the shell, one end of the optical axis of the fixed support penetrates into a sliding block exhaust hole II, a reset pressure spring penetrating through the optical axis is positioned between the fixed support and the sliding block, a limit screw is screwed into a threaded hole of the fixed support, a positioning shaft support is fixed on the side surface of the shell, a sliding positioning shaft is slidably installed in a positioning hole of the positioning shaft support, a movable base is slidably embedded into a T-shaped through groove of the sliding rail, the lower end of the movable support is fixed at one end of the movable base, an adjustable support is finely-adjusted in position and is fastened on the adjustable support by a fastening nut. The invention is suitable for quick assembly and disassembly of large-batch bushings, has uniform assembly and disassembly stress and high assembly quality, and does not damage part holes during disassembly.

Inventors

  • HAN ZHIRU

Assignees

  • 保定向阳航空精密机械有限公司

Dates

Publication Date
20260512
Application Date
20231231

Claims (5)

  1. 1. The device for installing and detaching the inner hole bushing of the part is characterized by comprising a sliding rail (8), a sliding block (10), a shell (1), a fixed support (7), a limit screw (4), a positioning shaft support (2), a sliding positioning shaft (3), a fixed shaft (18), a reset pressure spring (11), a movable base (12), a movable support (17), an adjustable support (16), a handle (15), a release preventing mechanism (9) and a stop mechanism; The sliding rail (8) is provided with a T-shaped through groove (81) in the middle, the center of the shell (1) is provided with a special-shaped through hole consisting of a through hole (22) and a square groove (23) communicated with the through hole (22), the middle of the upper end part of the fixed support (7) is provided with a threaded hole (71) and an exhaust hole I (5) respectively, one end surface of the fixed support extends out of the optical axis (72), the lower end of the sliding block (10) is matched with the T-shaped through groove (81) of the sliding rail (8), the upper end of the sliding block is provided with a positioning plate (102) with a bulge matched with the square groove (23) of the shell (1), the middle of the lower end of the sliding block is provided with an exhaust hole II (101), and the shell (1) and the sliding rail (8) are fixed on one end of the fixed support (7) with the optical axis respectively, The lower end of the sliding block (10) is slidably embedded into a T-shaped through groove (81) of the sliding rail (8), the upper end of the sliding block is penetrated into a square groove (23) of the shell (1), one end of an optical axis (72) of the fixed support (7) is penetrated into an exhaust hole II (101) of the sliding block (10), a reset pressure spring (11) penetrated on the optical axis (72) is positioned between the fixed support (7) and the sliding block (10), a limit screw (4) is screwed into a threaded hole (71) of the fixed support (7), the sliding positioning shaft (3) is a T-shaped shaft, the shaft end is a stepped shaft, the difference between the large diameter and the small diameter is the thickness of a bushing, the large diameter is the inner hole diameter of a part, the small diameter is the inner hole of the bushing, the center of the positioning shaft support (2) is provided with a positioning hole (201) which is in micro-clearance fit with the large diameter part of the T-shaped shaft, the lower end is provided with an exhaust hole III (202), the positioning shaft support (2) is fixed on the side surface of the shell (1), the sliding positioning shaft (3) is slidably installed in the positioning hole (201) of the positioning shaft support (2), the shaft end of the positioning shaft end (2) is penetrated out of the positioning hole (31) and can be in contact with the upper end of the special-shaped cap (31) of the sliding cap (31), the upper part of the cap end (31) is opposite to the limit screw (4), the movable base (12) is a convex long bar matched with a T-shaped through groove (81) of the sliding rail (8), the center of the movable base is provided with an exhaust hole IV (121) which is slidably embedded into the T-shaped through groove (81) of the sliding rail (8), the exhaust hole IV (121) is communicated with an exhaust hole II (101) on the sliding block (10), the center of the upper end surface of the movable support (17) is provided with a vertical through groove (172), the upper end part of the bottom wall of the vertical through groove (172) is provided with a fixed shaft end containing groove (171), the lower end of the vertical through groove is fixed at one end of the movable base (12), the two side surfaces of the movable base are provided with handles (15), the center of the adjustable support (16) is provided with a mounting step hole (161) of the fixed shaft (18), the adjustable support (16) is fixed in the vertical through groove (172), one end of the fixed shaft (18) is provided with an inner hole (181), the middle part of the fixed in the adjustable support (16) is provided with a step matched with the mounting step hole (161), the other end of the adjustable support (16) is provided with threads, the other end of the fixed shaft (16) passes through the adjustable support (16) and is opposite to the fixed shaft (19), the fixed shaft (19) and is fixed on the same end, and is opposite to the fixed shaft (3) through the fixed shaft (16) through the fixed on the fixed shaft, and fixed nut, and fixed on the fixed shaft (3, the fixed shaft (18) is provided with an outer diameter of one end of an inner hole (181) and an inner diameter of a bushing in clearance fit, when the inner sleeve is disassembled, the inner diameter of one end of the inner hole (181) of the fixed shaft (18) is larger than the inner diameter of a part, the outer diameter of the end is smaller than the appearance of the part, the anti-falling mechanism (9) of the movable support (17) is fixed on the upper end face of the sliding rail (8) far away from one end of the fixed support (7), and the stop mechanisms of the movable base (12) are arranged on two side walls of the sliding rail (8) far away from one end of the fixed support (7).
  2. 2. The device for installing and detaching the part inner hole bushing according to claim 1, wherein the stopping mechanism comprises a stopping shaft (20), a stopping pressure spring (21), a limiting bolt (14) and a stopping handle (13), special-shaped holes are symmetrically formed in two side walls of a sliding rail (8) far away from one end of the fixed support (7), the special-shaped holes Kong Liduan are square grooves (83), the middle part is an unthreaded hole, the outer end of the special-shaped holes is a threaded hole (82) matched with the limiting bolt (14), the middle part of the stopping shaft (20) is divided into two parts by a large-diameter convex ring, the inner part is square matched with a square groove (83) in the side wall of the sliding rail (8), the outer part is matched with the inner hole of the limiting bolt (14), the tail end of the part is threaded, the stopping shaft (20) is inserted into the square groove (83) of the sliding rail (8) and is connected in the threaded groove of the stopping handle (13) in a threaded mode after the limiting bolt (14) penetrates through the inner hole, the limiting bolt (14) is screwed into the threaded hole in the side wall of the sliding rail (8), the convex ring of the stopping shaft (20) is matched with the square groove (83), the inner end face (14) on the inner end of the sliding rail is matched with the square groove (9), and the stopping shaft (20) is arranged on the side face of the moving base, and the stopping shaft (20) and the stopping mechanism is close to the stopping seat.
  3. 3. The device for installing and detaching the inner hole bushing of the part according to claim 1 or 2, wherein the adjustable support (16) is fixed in the vertical through groove (172) of the movable support (17) in a fine-tuning way, the specific structure is that four corners of the adjustable support (16) are thinner than the middle part, four long round holes (162) are formed in the four corners of the adjustable support, threaded holes (174) are formed in positions of the movable support (17) corresponding to the long round holes (162) in the adjustable support (16), and the adjustable support (16) and the movable support (17) are fixed together through fastening screws (6) which are fixed on the long round holes (162) and the corresponding threaded holes (174) through pressing.
  4. 4. The device for installing and detaching the inner hole bushing of the part according to claim 3, wherein the anti-falling mechanism (9) is two anti-falling screws, and the two anti-falling screws are fixed in two thread anti-falling grooves (84) symmetrically arranged on the upper end face of the sliding rail (8) far away from one end of the fixed support (7) in a threaded manner.
  5. 5. The device for installing and detaching the inner hole bushing of the part according to claim 1 or 2, wherein the anti-falling mechanism (9) is two anti-falling screws, and the two anti-falling screws are fixed in two thread anti-falling grooves (84) symmetrically arranged on the upper end face of the sliding rail (8) far away from one end of the fixed support (7) in a threaded manner.

Description

Installation and dismounting device for inner hole bushing of part Technical Field The invention belongs to the field of mechanical assembly, and relates to a device for installing and detaching an inner hole bushing of a part. Background The bushing is widely applied to mechanical products, when the part material is not wear-resistant, the aluminum bronze bushing with better wear resistance is arranged in the hole or on the shaft, so that the wear between two parts can be reduced, and the service life is prolonged. After the bushing is worn for a long time, the bushing is directly replaced, so that the maintenance is convenient and the cost is reduced. Bushing mounting is generally classified into cold shrink mounting and thermal expansion mounting. The shrink mounting is to put the lining into liquid nitrogen for cooling, so that the outer diameter of the lining is reduced, and the shrink mounting is used for interference mounting of the lining in a part hole. The thermal expansion installation is to put the bushing in a heating device to expand the inner diameter of the bushing for interference installation of the bushing on the shaft. To the interference installation of part downthehole bush, at present, when the assembly, will be in the bush in liquid nitrogen generally for a set period, the excircle takes place to shrink, guarantees that bush and part do not have the interference, takes out the bush from liquid nitrogen, in order to prevent to produce thicker frost layer on the bush and influence the installation, knocks the bush into the hole with the rubber hammer in several seconds. The method has long installation time and low efficiency, is not suitable for mass production, can influence the assembly quality due to overlong installation time, and can manually swing the rubber hammer, the bushing is easy to be stressed unevenly and is deflected, so that the coaxiality of holes in the bushing and the part is poor, and when severe, the bushing can not completely enter the holes and needs to be reinstalled after the bushing is removed, thereby not only influencing the assembly progress, but also damaging the part and the bushing. When the bush is disassembled, one end face of the part is lifted, the bush is hammered out by means of the step mandrel, the efficiency is low, the bush is not suitable for mass production, and part holes are easily damaged due to uneven stress in the disassembly process, so that the part cannot be used any more. Disclosure of Invention The invention aims to solve the problems in the prior art and provide the installation and disassembly device for the inner hole bushing of the part, which is suitable for rapid installation and disassembly of a large number of bushings, has even installation and disassembly stress, has no phenomenon of deflection and reinstallation after sleeve withdrawal during installation, has high assembly quality, does not damage the part hole during disassembly, and has high installation and disassembly efficiency. The technical scheme is that the mounting and dismounting device of the inner hole bushing of the part comprises a sliding rail, a sliding block, a shell, a fixed support, a limit screw, a positioning shaft support, a sliding positioning shaft, a fixed shaft, a reset pressure spring, a movable base, a movable support, an adjustable support, a handle, an anti-falling mechanism and a stop mechanism; A T-shaped through groove is formed in the middle of the sliding rail; the center of the shell is provided with a special-shaped through hole which consists of a through hole and a square groove communicated with the through hole; the middle of the upper end part of the fixed support is provided with a threaded hole and an exhaust hole I respectively, and one end surface extends out of the optical axis; the lower end of the sliding block is matched with a T-shaped through groove of the sliding rail, the upper end of the sliding block is provided with a positioning plate with a bulge matched with a square groove of the shell, the middle part of the lower end of the sliding block is provided with an exhaust hole II, the shell and the sliding rail are respectively fixed at the upper end and the lower end of one end of the fixed support with an optical axis, the lower end of the sliding block is slidably embedded into the T-shaped through groove of the sliding rail, the upper end of the sliding block penetrates through the square groove of the shell, one end of the optical axis of the fixed support penetrates through the exhaust hole II of the sliding block, a reset pressure spring penetrating through the optical axis is positioned between the fixed support and the sliding block, the limiting screw is screwed into a threaded hole of the fixed support, the shaft end is a T-shaped shaft, the shaft end is a stepped shaft, the difference between the large diameter and the small diameter is the thickness of a bushing, the large diameter is the inner hole d