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CN-224223685-U - Positioning device for key groove of input shaft of speed reducer

CN224223685UCN 224223685 UCN224223685 UCN 224223685UCN-224223685-U

Abstract

The utility model belongs to the technical field of positioning of input shafts of speed reducers, in particular to a positioning device for a key slot of the input shaft of a speed reducer, which comprises a base, wherein a fixed plate is arranged on a guide assembly, an arc-shaped groove is formed in the fixed plate, a mounting frame is fixedly arranged on the arc-shaped block through a connecting rod, a positioning block is sleeved on the periphery of the fixed block in a sliding manner, a chute is formed in the positioning block, the fixed block is assembled in the chute, a spring is arranged between the inner wall of the chute and the fixed block, a grating disk is arranged on the outer wall of the annular plate, the positioning block rotates around the central line of the input shaft, when the positioning block rotates to the key slot, the spring pushes the positioning block to be clamped into the key slot under the thrust of the spring, then the positioning block drives the input shaft to rotate, and when the rotation angle is 90 degrees, the key slot rotates to the position right above the input shaft, thereby realizing accurate positioning of the key slot, being beneficial to improving the positioning accuracy and the positioning efficiency.

Inventors

  • ZHU JIAQI
  • Ding Guiyang

Assignees

  • 常州市曼宇传动机械有限公司

Dates

Publication Date
20260512
Application Date
20250530

Claims (6)

  1. 1. The positioning device for the key slot of the input shaft of the speed reducer is characterized by comprising a base (1), a control panel (2) is arranged on the base (1), a guide plate (3) is arranged on the base (1), a guide assembly is arranged in the guide plate (3), a fixed plate (8) is arranged on the guide assembly, an arc groove (9) is formed in the fixed plate (8), an arc block (10) is arranged in the arc groove (9), a mounting frame is fixedly arranged on the arc block (10) through a connecting rod, an electric cylinder (11) is arranged on the mounting frame, a fixed block (12) is fixedly connected to an action rod of the electric cylinder (11), a positioning block (13) is arranged on a peripheral sliding sleeve of the fixed block (12), a sliding groove (14) is formed in the positioning block (13), a spring (15) is arranged between the inner wall of the sliding groove (14) and the fixed block (12), a limit groove is formed in the side wall of the positioning block (13), a limit block (16) is arranged in the limit groove, a limit block (26) is fixedly connected with the side wall (26) of the annular block (12), and the annular plate (26) is fixedly connected with the outer wall (26), a photoelectric detector (28) is arranged on the fixed plate (8).
  2. 2. The positioning device for a key groove of an input shaft of a speed reducer according to claim 1, wherein the fixed plate (8) is provided with a first motor (29) through a stand, and an output shaft of the first motor (29) is provided with a pinion (30).
  3. 3. A positioning device for a key groove of an input shaft of a speed reducer as set forth in claim 1, wherein an internal gear (31) is mounted on an inner wall of said annular plate (26), said internal gear (31) being intermeshed with a pinion gear (30).
  4. 4. The positioning device for the key groove of the input shaft of the speed reducer of claim 1, wherein a cavity is formed in the grating disk (27), a light source is arranged in the cavity, and a plurality of grating holes are formed in the outer wall of the grating disk (27).
  5. 5. The positioning device for the key groove of the input shaft of the speed reducer according to claim 1, wherein the guide assembly comprises a guide groove (4), the guide groove (4) is arranged in a first guide plate (3), a stepping motor (5) is arranged on the side wall of the first guide plate (3) through a stand, a screw rod (6) is arranged on an output shaft of the stepping motor (5), the screw rod (6) is rotatably arranged on the inner wall of the guide groove (4), a guide block (7) is assembled in the guide groove (4), and the guide block (7) is fixedly connected with a fixing plate (8).
  6. 6. The positioning device for the key groove of the input shaft of the speed reducer is characterized in that a mounting plate (17) is mounted on the base (1), a moving groove (18) is formed in the mounting plate (17), a double-head screw (19) is rotatably mounted on the inner wall of the moving groove (18), the directions of threads on the double-head screw (19) are symmetrical and opposite, a knob (20) is mounted at one end of the double-head screw (19), two moving blocks (21) are symmetrically mounted in the moving groove (18), a clamping block (22) is mounted on the moving block (21), an electric telescopic rod (23) is fixedly mounted in the clamping block (22), a speed reducer (24) is placed on the base (1), an input shaft (25) is mounted on the speed reducer (24), and a key groove (32) is formed in the input shaft (25).

Description

Positioning device for key groove of input shaft of speed reducer Technical Field The utility model relates to the technical field of positioning of input shafts of speed reducers, in particular to a positioning device for a key slot of an input shaft of a speed reducer. Background Key connection is a common fixing method, in which a key is installed in holes of a shaft and a gear to connect them, and in order to improve convenience of assembly when key connection is performed on an input shaft of a speed reducer and the gear, a positioning device of a key groove is required to ensure that the key groove is fixed in a correct position. One Chinese patent with the issued publication number of CN 219986957U discloses a positioning device for a key slot of an input shaft of a speed reducer, relates to the technical field of production equipment of the speed reducer, and aims to solve the technical problem of angle positioning. The technical scheme is characterized by comprising a base and a connecting seat, wherein a plurality of vertical connecting rods are arranged on the surface of the base, connecting grooves matched with the connecting rods in a sliding connection mode are formed in the connecting seat, a first driving piece used for driving the connecting seat to lift along the connecting rods is arranged on the surface of the base, a positioning piece is connected with the surface of the connecting seat in a sliding mode along the horizontal direction, and a second driving piece used for driving the positioning piece is further arranged on the surface of the connecting seat. The utility model aims to provide a positioning device for a key groove of an input shaft of a speed reducer. The positioning device for the key slot of the input shaft of the speed reducer is provided for solving the problems that the angle of the key slot is difficult to accurately and conveniently position in the process of positioning the input shaft of the speed reducer, so that the positioning accuracy is poor and the positioning efficiency is affected. Disclosure of utility model In order to overcome the defects in the prior art and solve the problems in the prior art, the utility model provides a positioning device for a key groove of an input shaft of a speed reducer. The technical proposal adopted by the utility model for solving the technical problems is that the positioning device for the key slot of the input shaft of the speed reducer comprises a base, wherein a control panel is arranged on the base, a guide plate is arranged on the base, a guide component is arranged in the guide plate, a fixed plate is arranged on the guide component, an arc-shaped groove is arranged on the fixed plate, an arc-shaped block is arranged in the arc-shaped groove, a mounting frame is fixedly arranged on the arc-shaped block through a connecting rod, an electric cylinder is arranged on the mounting frame, a fixed block is fixedly connected on an action rod of the electric cylinder, a positioning block is sleeved on the periphery of the fixed block in a sliding manner, a chute is arranged in the positioning block, the fixed block is assembled in the chute, a spring is arranged between the inner wall of the chute and the fixed block, a limit groove is arranged on the side wall of the positioning block, a limit block is arranged in the limit block, the limiting block is fixedly connected with the side wall of the fixed block, the annular plate is arranged on the arc-shaped block, the grating disk is arranged on the outer wall of the annular plate, the photoelectric detector is arranged on the fixed plate, the first motor is arranged on the fixed plate through the machine seat, the pinion is arranged on the output shaft of the first motor, the inner gear is arranged on the inner wall of the annular plate, the inner gear and the pinion are meshed with each other, the cavity is arranged in the grating disk, the light source is arranged in the cavity, the plurality of grating holes are arranged on the outer wall of the grating disk, the positioning block rotates around the central line of the input shaft through the positioning block, the positioning block is pushed into the key groove by the spring under the thrust of the spring when rotating to the key groove, then the positioning block drives the input shaft to rotate, the photoelectric detector detects the optical signal change of the grating disk in the process, the control panel processes and decodes the signal output by the photoelectric detector so as to deduce the rotation angle of the positioning block, when the rotation angle is 90 degrees, the first motor stops running, the positioning block stops rotating, and the key slot rotates to the position right above the input shaft, so that the accurate positioning of the key slot is realized, the positioning accuracy is improved, and the positioning efficiency is improved. Preferably, the guide assembly comprises a guide groove, the guide