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CN-224209530-U - Centering fastening clamp for internal spline gear

CN224209530UCN 224209530 UCN224209530 UCN 224209530UCN-224209530-U

Abstract

The utility model relates to the technical field of processing of farm cultivator parts and discloses a centering fastening clamp for an internal spline gear, which comprises a machine shell, wherein a through hole is formed in the inner center of the machine shell, centering fastening components which are communicated into the through hole are arranged in the machine shell, air cylinders are symmetrically arranged on the centers of opposite sides of a top plate and a bottom plate, sliding grooves are formed in the positions, corresponding to the air cylinders, of the upper side and the lower side of the machine shell, a rack plate is connected in a sliding mode and fixedly arranged at one end of a telescopic shaft of the air cylinder, the rack plate is used for driving the centering fastening components to center and fasten the gear, and an extrusion head is driven to extrude an inclined surface of a sliding block through rotation of a gear ring, so that an arc pressing plate is driven to slide into the through hole, the arc pressing plate is further enabled to extrude the outer side of the internal gear to fasten and clamp, and the gear is enabled to be positioned in the center through simultaneous movement of the arc pressing plates of four groups of arrays, so that the centering clamping fastening effect can be achieved.

Inventors

  • ZHANG CHAOHUA

Assignees

  • 重庆天旬机械制造有限公司

Dates

Publication Date
20260508
Application Date
20250526

Claims (7)

  1. 1. The centering fastening clamp for the internal spline gear comprises a machine shell (1) and is characterized in that a top plate (2) and a bottom plate (3) are fixedly arranged on the upper side and the lower side of the machine shell (1) respectively, the top plate (2) and the bottom plate (3) are in central symmetry, lugs (4) are fixedly arranged on the front side and the rear side of the bottom plate (3), a through hole is formed in the center of the interior of the machine shell (1), a centering fastening assembly (5) which is led into the through hole is arranged in the interior of the machine shell (1), a cylinder (6) is arranged on one side, opposite to the top plate (2) and the bottom plate (3), of the machine shell, a sliding groove is formed in the position, corresponding to the cylinder (6), of the upper side and the lower side of the machine shell (1), a rack plate (7) is fixedly arranged on one end of a telescopic shaft of the cylinder (6), and the rack plate (7) is used for driving the centering fastening assembly (5) to fasten the gear.
  2. 2. The centering and fastening clamp for the internal spline gear, as set forth in claim 1, characterized in that the centering and fastening assembly (5) comprises a gear ring (8) rotatably connected inside the casing (1), the gear ring (8) is in meshed connection with the rack plate (7), an extrusion head (9) is fixedly installed on an inner wall array of the gear ring (8), and a centering piece which is clamped by the extrusion head (9) in a transmission and extrusion manner for fastening the gear is arranged inside the casing (1).
  3. 3. The centering and fastening clamp for the internal spline gear, as set forth in claim 2, characterized in that the centering member comprises an L-shaped plate (10) fixedly installed in the casing (1) and symmetrically arranged, a sliding block (11) is slidably connected between the L-shaped plates (10) symmetrically arranged on both sides, one end of the sliding block (11) opposite to the extrusion head (9) is provided with an inclined plane on both sides, and one end of the center of a through hole of the sliding block (11) is fixedly provided with an arc pressing plate (12).
  4. 4. The centering and fastening clamp for an internal spline gear according to claim 3, wherein side grooves (13) are formed in two side sides of the sliding block (11), one right-angle side of the L-shaped plate (10) is inserted into the bottom of the side grooves (13), and a compression spring (14) is fixedly arranged between the inner wall of the side grooves (13) and one right-angle side of the L-shaped plate (10).
  5. 5. The centering and fastening clamp for an internally splined gear according to claim 4, wherein the end center of the slider (11) is provided with a caulking groove, and the pressing head (9) is embedded in the caulking groove.
  6. 6. The centering fastening clamp for the internal spline gear, as set forth in claim 4, characterized in that a movable groove (15) penetrating through the arc pressing plate (12) is formed in the bottom of the sliding block (11), a movable block (16) is slidably connected in the movable groove (15), a clamping head (17) is fixedly mounted on the bottom side of the movable block (16), and the clamping head (17) is clamped between the outer clamping teeth of the gear.
  7. 7. The centering fastening clamp for the internal spline gear, as set forth in claim 6, characterized in that a threaded cylinder is fixedly installed in both ends of the movable groove (15), a fastening screw (18) is screwed in the threaded cylinder, a knob head (19) is fixedly installed at one end of the fastening screw (18) on both sides opposite to each other, and the knob head (19) has an internal hexagonal groove.

Description

Centering fastening clamp for internal spline gear Technical Field The utility model relates to the technical field of processing of agricultural machine parts, in particular to a centering fastening clamp for an internal spline gear. Background The internal spline gear is a transmission gear with an inner hole adopting involute tooth surface splines to be in positioning connection with the tooth surface of the external spline of the transmission shaft, has an important function in the farming machine, can effectively limit axial displacement and ensure the stability and reliability of connection while transmitting torque through a unique structural design, and can keep stable transmission effect in the operation process of the farming machine and reduce transmission efficiency reduction and mechanical failure caused by axial displacement. When processing the internal spline gear, need carry out fastening location through anchor clamps to the gear earlier, then just conveniently carry out boring processing, and current fastening anchor clamps are carrying out the centre of a circle to the gear when centre of a circle is fixed to the centre of a clamp, and then can influence the accuracy of processing, consequently, can do further improvement. Disclosure of utility model In order to solve the problems, the utility model provides the technical scheme that the centering fastening clamp for the internal spline gear comprises a shell, wherein a top plate and a bottom plate are respectively and fixedly arranged on the upper side and the lower side of the shell, the top plate and the bottom plate are in central symmetry, lugs are fixedly arranged on the front side and the rear side of the bottom plate, a through hole is formed in the center of the inside of the shell, a centering fastening assembly which is led into the through hole is arranged in the inside of the shell, air cylinders are symmetrically arranged on the opposite sides of the top plate and the bottom plate, sliding grooves are formed in the positions, corresponding to the air cylinders, of the upper side and the lower side of the shell, rack plates are connected in a sliding mode, and are fixedly arranged at one end of a telescopic shaft of the air cylinders, and are used for driving the centering fastening assembly to perform centering fastening on the gear. As optimization, centering fastening assembly is including rotating the gear ring of connecting in the casing inside, just gear ring and rack board meshing are connected, the inner wall array fixed mounting of gear ring has the extrusion head, the inside of casing is provided with the centering piece that receives extrusion head transmission extrusion fastening gear to carry out the centre gripping, can drive the rack board through the start cylinder and slide, and then can drive the gear ring and rotate, can make the extrusion head rotate and carry out the transmission to the centering piece. As optimization, the centering piece comprises an L-shaped plate fixedly arranged in the machine shell and symmetrically connected with a sliding block in a sliding manner, two sides of one end of the sliding block, which is opposite to the extrusion head, are provided with inclined planes, an arc pressing plate is fixedly arranged at one end of the center of a through hole of the sliding block, the inclined planes of the sliding block can be extruded through rotation of the extrusion head, and then the arc pressing plate can be driven to slide in the through hole, so that the outer side of the internal gear can be extruded for fastening and clamping. As optimization, side slots are formed in two sides of the sliding block, the right-angle sides of the L-shaped plate are inserted into the bottoms of the side slots, compression springs are fixedly arranged between the inner walls of the side slots and the right-angle sides of the L-shaped plate, and the compression springs can be compressed by sliding along the inner walls of the L-shaped plate under pressure of the sliding block. As optimization, the end center of the sliding block is provided with a caulking groove, the extrusion head is embedded in the caulking groove, the extrusion sliding block is rotated to slide through the extrusion head, and the reverse resetting force of the sliding block can be always given through the compression spring, so that the extrusion head is embedded in the caulking groove. As optimization, a movable groove penetrating through the arc pressing plate is formed in the bottom of the sliding block, a movable block is connected inside the movable groove in a sliding mode, a clamping head is fixedly arranged on the bottom side of the movable block, the clamping head is clamped between outer clamping teeth of the gear, the clamping head is downwards clamped on the outer side of the gear through the arc pressing plate, and the clamping head is clamped between the outer clamping teeth of the gear. As optimization, a thread cyli