CN218800313U

CN218800313U - Gear and shaft cone interference assembly tool

Info

Publication number: CN218800313U
Application number: CN202023334902.9U
Authority: CN
Inventors: 任荣智; 邵耿; 周凯; 李志刚
Original assignee: Sichuan Kunchengrun Technology Co ltd
Current assignee: Sichuan Kunchengrun Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2023-04-07
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a gear and axle cone interference fit frock relates to large-scale gearbox gear pair transmission system's gear shaft field of making, the utility model discloses a workstation and work piece, the work piece includes gear and axle, be equipped with oil pump B mounting bracket on the workstation, inside oil pump B mounting bracket was located to gear and axle, gear connection is equipped with the oil pump A case that provides the big gear hole pressure that expands, oil pump B mounting bracket top is equipped with and provides the oil pump B case of gear force of impressing, the inside advancing mechanism who contacts with oil pump B case that is equipped with of oil pump B mounting bracket, advancing mechanism radially promotes the gear, the utility model discloses a mode that rises simultaneously and promote the gear is in order to reach great magnitude of interference to the upper limit and the difficult damage of structural reliability and the circular cone surface that have promoted gear shaft transmission load.

Description

Gear and shaft cone interference assembly tool

Technical Field

The utility model relates to a field is made to large-scale gearbox gear pair transmission system's gear shaft, more specifically relates to a gear and an interference fit frock of axle cone.

Background

In the manufacturing process of the traditional large gearbox gear shaft system, under the condition that the difference between the outer diameter of the spline shaft gear and the shaft is large, split processing is mostly adopted, and the spline shaft gear and the shaft are connected together through press fitting.

Therefore according to the problem, the utility model designs a gear and axle cone interference fit frock has adopted the mode that the high-pressure oil pump is expanded simultaneously and is promoted the gear in order to reach great magnitude of interference to the upper limit and the structural reliability of gear shaft transmission load have been promoted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems that when the outer diameter of the existing spline shaft gear is pressed together with a shaft, the mechanical performance of a gear shaft is affected due to limited press-in amount, insufficient interference amount, easy deformation of parts and the like, the gear and shaft cone interference assembly tool is designed.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme: the utility model provides a gear and axle cone interference fit frock, includes workstation and work piece, the work piece includes gear and axle, be equipped with oil pump B mounting bracket on the workstation, inside oil pump B mounting bracket was located to gear and axle, gear connection is equipped with the oil pump A case that provides the big gear hole pressure that expands, oil pump B mounting bracket top is equipped with and provides the oil pump B case of gear indentation power, inside advancing mechanism with oil pump B case contact of being equipped with of oil pump B mounting bracket, advancing mechanism radially promotes the gear, oil pump A case includes oil pump A, passes through threaded connection with oil pump A oil-out booster and the transition oil pipe of being connected with the booster, oil pump B case includes oil pump B and mounting flange, mounting flange upper end passes through the bolt fastening with oil pump B, and the lower extreme passes through the bolt fastening with the top of oil pump B mounting bracket, advancing mechanism includes advancing dish, advances a section of thick bamboo and back shaft and to gear spacing positioning seat, the excircle of advancing dish and the inner wall clearance fit of oil pump B mounting bracket, advancing dish and advancing a section of thick bamboo and connect, with the operation in-process with the pump B to about 10Mpa, the oil pump A that begins to step up, pressure does not exceed pressure boost oil pump B, and pressure boost oil pump B is no more than 350A, and pressure boost oil pump B is no more than after 30MPa.

Furthermore, the positioning seat is of a direct trapezoidal structure and comprises a supporting surface in contact with the shaft and a positioning surface in contact with the end face of the gear, and the positioning seat is fixed to the base of the workbench through a bolt and used for axially positioning the gear to ensure the assembling position.

Furthermore, the plane of the lower end of the propulsion disc and the propulsion cylinder are provided with a spigot structure with a guiding function, the spigot structure is a boss structure and has a positioning function, when the thrust transmission mechanism is used and placed, the propulsion cylinder in the thrust transmission mechanism penetrates through the shaft and is placed to the end face of the gear, and the propulsion disc and the propulsion cylinder are positioned and placed according to the spigot.

Further, oil pump B mounting bracket from the top down includes dull and stereotyped, drum and lower flat board in proper order, go up and be equipped with through-hole A in the middle of the flat board, oil pump B case passes from through-hole A, the drum middle part is equipped with through-hole B, oil pump A case penetrates in the drum from through-hole B.

Furthermore, a plurality of through holes C are formed in the middle of the cylinder, so that the assembly condition of the gear and the shaft in the tooling process can be observed and measured conveniently

Further, workstation from the top down includes base, mesa, table foot in proper order and locates the fixed plate of table foot bottom, the base passes through the bolt fastening to the mesa on, be equipped with two trompils on the mesa for pass the booster and pass through the axle, the fixed plate is connected with ground through rag bolt.

Further, the mounting rack of the oil pump B is connected with the base of the workbench through a bolt.

The working principle is as follows: the utility model expands the gear inner conical surface through the pressure of hydraulic oil in the oil pump A, so that the gear inner conical surface and the shaft outer conical surface generate a gap, and the oil pressure is increased until the interference for assembly is reached; the gear is pushed to a preset assembly position on the shaft through the oil pump B of the oil pump B box, and a mode of expanding and pushing the gear simultaneously is adopted to achieve larger interference, so that the upper limit of load transmission of the gear shaft and the structural reliability are improved.

The utility model has the advantages as follows:

1. the utility model discloses an adopted the mode that rises simultaneously and promote the gear in order to reach great magnitude of interference to promoted the upper limit and the structural reliability of gear shaft transmission load and the difficult damage of circular cone surface.

2. The utility model discloses well connection structure adopts bolted connection mostly, can guarantee to satisfy its convenient dismantlement promptly and can guarantee its stability again.

3. The utility model discloses be equipped with tang structure and positioning seat, what can be better carries out effectual location in the installation and prevents that there is the skew in the installation.

4. The utility model discloses be equipped with a plurality of through-holes C and can conveniently observe and measure in the process.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

fig. 2 is a schematic structural diagram of the present invention;

FIG. 3 is a partial enlarged view of the spigot structure of the present invention;

fig. 4 is a partially enlarged view of the positioning seat of the present invention;

reference numerals: 1-workbench, 2-oil pump A box, 3-oil cylinder mounting rack, 4-oil pump B box, 6-workpiece, 1-1-fixing plate, 1-2-table foot, 1-3-table surface, 1-4-base, 2-1-booster, 2-2-transition oil pipe, 3-1-upper flat plate, 3-2-cylinder, 3-3-lower flat plate, 4-1-oil pump B, 4-2-oil cylinder mounting flange, 5-1-propulsion plate, 5-2-propulsion cylinder, 5-3-positioning seat, 5-4-positioning surface, 5-5-supporting surface, 6-1-shaft and 6-2-gear.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

The directions or positional relationships indicated as inner, outer, upper, etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships conventionally placed when the utility model is used, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

Example 1

As shown in fig. 1 to 4, a conical interference assembly tool for a gear 6-2 and a shaft 6-1 comprises a workbench 1 and a workpiece 6, wherein the workpiece 6 comprises a gear 6-2 and a shaft 6-1, the workbench 1 is provided with an oil pump B4-1 mounting rack, the gear 6-2 and the shaft 6-1 are arranged inside the oil pump B4-1 mounting rack, the gear 6-2 is connected with an oil pump a box 2 for providing inner hole pressure of the expanding gear 6-2, the top of the oil pump B4-1 mounting rack is provided with an oil pump B box 4 for providing pressing force of the gear 6-2, a propelling mechanism in contact with the oil pump B box 4 is arranged inside the oil pump B4-1 mounting rack, and the propelling mechanism radially propels the gear 6-2, the oil pump A box 2 comprises an oil pump A, a booster 2-1 connected with an oil outlet of the oil pump A and a transition oil pipe 2-2 connected with the booster 2-1, the transition oil pipe 2-2 is in threaded connection with a gear 6-2, the oil pump B box 4 comprises an oil pump B4-1 and a mounting flange plate, the upper end of the mounting flange plate is fixed with the oil pump B4-1 through bolts, the lower end of the mounting flange plate is fixed with the top of a mounting bracket of the oil pump B4-1 through bolts, the propelling mechanism comprises a propelling disc 5-1, a propelling cylinder 5-2, a supporting shaft 6-1 and a positioning seat 5-3 for limiting the gear 6-2, the excircle of the propelling disc 5-1 is in clearance fit with the inner wall of the mounting bracket of the oil pump B4-1, the propelling disc 5-1 is connected with the propelling cylinder 5-2, and the oil pump B4-1 is boosted to about 10Mpa in the operation process, the oil pump A starts to be pressurized, and then the oil pump B4-1 is pressurized along with the pressure of the oil pump A, but the pressure of the oil pump B4-1 is not more than 30MPa, and the pressure of the oil pump A is not more than 350MPa.

The utility model discloses an assembly:

(1) The outlet end of a booster 2-1 of the oil pump A box 2 is in threaded connection with the gear 6-2 through a transition joint, and high-pressure oil at an oil outlet provides pressure for expanding the gear 6-2;

(2) The oil cylinder of the oil pump B4-1 and the tank 4 is arranged on the oil cylinder mounting frame 3 through an oil cylinder mounting flange 4-2;

(3) The oil cylinder mounting frame 3 is fixed on a table top 1-3 of the workbench 1 through a base 1-4, and the workbench 1 is fixed on the ground through foundation bolts;

(4) When the mechanism works, a cylinder piston of the oil pump B4-1 and the tank 4 is in contact with the end face of the propelling mechanism during working, and pressure is provided to enable the propelling mechanism to push the gear 6-2 to move to the assembling position with the shaft 6-1.

The utility model discloses an use:

(1) Cleaning the conical surfaces of the gear 6-2 and the shaft 6-1, coating lubricating oil, compacting the conical surfaces and the lubricating oil, and hoisting the gear 6-2 and the shaft 6-1 to the workbench 1;

(2) A propelling cylinder 5-2 in the thrust transmission mechanism penetrates through a shaft 6-1 and is placed on the end face of a gear 6-2;

(3) Mounting the oil cylinders of the oil pump B4-1 and the tank 4 on a flange, mounting the flange on a mounting frame, and finally fixing the mounting frame to a base 1-4 on the workbench 1;

(4) A booster 2-1 of a tank 2 of an oil pump A is in threaded connection with an oil hole on a gear 6-2 through threads on a transition oil pipe 2-2;

(5) Boosting the pressure of the oil pump B4-1 to about 10Mpa, starting boosting the pressure of the oil pump A, and then boosting the pressure of the oil pump B4-1 along with the boosting of the oil pump A;

(6) When the gear 6-2 moves to reach a preset position, the oil pump B4-1 starts to slowly release pressure, and the oil pump A needs to maintain the pressure for about 1 hour;

(7) And after the pressure maintaining is finished, slowly releasing the pressure of the oil pump A, then removing the transition oil pipe 2-2, and finishing the whole press mounting process.

Example 2

As shown in fig. 1 to 4, in order to make the installation of the present invention more accurate and the positioning more ready, the present embodiment is further improved on the basis of embodiment 1, specifically: the positioning seat 5-3 is of a direct trapezoidal structure and comprises a supporting surface 5-5 in contact with the shaft 6-1 and a positioning surface 5-4 in contact with the end surface of the gear 6-2, the positioning seat 5-3 is fixed to the base 1-4 of the workbench 1 through a bolt and used for positioning the shaft 6-1 of the gear 6-2 to ensure the assembling position, a spigot structure with a guiding effect is arranged on the lower end plane of the propulsion disc 5-1 and the propulsion cylinder 5-2, the spigot structure is of a boss structure and has a positioning effect, the propulsion cylinder 5-2 in the thrust transmission mechanism penetrates through the shaft 6-1 to be placed to the end surface of the gear 6-2 when the thrust transmission mechanism is used and placed, and the propulsion disc 5-1 and the propulsion cylinder 5-2 are positioned according to the spigot.

Example 3

As shown in fig. 1 to fig. 4, in order to make the operation of the present invention more convenient, more convenient for observation and detection and more stable structure, the present embodiment is further improved on the basis of embodiment 2, specifically: the mounting frame of the oil pump B4-1 comprises an upper flat plate 3-1, a cylinder 3-2 and a lower flat plate 3-3 in sequence from top to bottom, a through hole A is formed in the middle of the upper flat plate 3-1, a box 4 of the oil pump B4-1 penetrates through the through hole A, a through hole B is formed in the middle of the cylinder 3-2, the box 2 of the oil pump A penetrates into the cylinder 3-2 from the through hole B, 2 through holes C are formed in the middle of the cylinder 3-2, assembling conditions of the gear 6-2 and the shaft 6-1 in the tooling process are convenient to observe and measure, the workbench 1 sequentially comprises a base 1-4, a table board 1-3, a table foot 1-1 and a fixing plate 1-1 arranged at the bottom of the table foot 1-1 from top to bottom, the base 1-4 is fixed on the table board 1-3 through bolts, two open holes are formed in the mounting frame of the table board 1-3 and used for penetrating through the booster 2-1 and the shaft 6-1, the fixing plate 1-1 is connected with the ground through bolts, and the oil pump B4 is connected with the base 1-4 through bolts.

The protection scope of the present invention is not limited to the above examples, and the changes of the shape of the mounting rack, etc. made by those skilled in the art are all within the protection scope of the present invention.

Claims

1. The utility model provides a gear and shaft cone interference fit frock, includes workstation (1) and work piece (6), work piece (6) include gear (6-2) and axle (6-1), its characterized in that: be equipped with oil pump B (4-1) mounting bracket on workstation (1), inside oil pump B (4-1) mounting bracket was located in gear (6-2) and axle (6-1), oil pump A case (2) that are equipped with the hole pressure that provides distending gear (6-2) were connected in gear (6-2), oil pump B (4-1) mounting bracket top is equipped with and provides oil pump B case (4) of gear (6-2) power of impressing, inside advancing mechanism who is equipped with oil pump B case (4) contact of oil pump B (4-1) mounting bracket, advancing mechanism radially promotes gear (6-2).

2. The gear and shaft cone interference assembly tool of claim 1, characterized in that: the oil pump A box (2) comprises an oil pump A, a booster (2-1) connected with an oil outlet of the oil pump A and a transition oil pipe (2-2) connected with the booster (2-1), the transition oil pipe (2-2) is in threaded connection with a gear (6-2), and the pressure of the oil pump A is not more than 350MPa.

3. The gear and shaft cone interference assembly tool of claim 1, characterized in that: the oil pump B (4-1) box (4) comprises an oil pump B (4-1) and a mounting flange plate, the upper end of the mounting flange plate is fixed with the oil pump B (4-1) through bolts, the lower end of the mounting flange plate is fixed with the top of a mounting bracket of the oil pump B (4-1) through bolts, and the pressurization of the oil pump B (4-1) cannot exceed 30MPa.

4. The gear and shaft cone interference assembly tool of claim 1, characterized in that: the propelling mechanism comprises a propelling disc (5-1), a propelling barrel (5-2), a supporting shaft (6-1) and a positioning seat (5-3) for limiting the gear (6-2), the excircle of the propelling disc (5-1) is in clearance fit with the inner wall of an oil pump B (4-1) mounting bracket, and the propelling disc (5-1) is connected with the propelling barrel (5-2).

5. The gear and shaft cone interference assembly tool of claim 4, characterized in that: the positioning seat (5-3) is of a direct trapezoidal structure and comprises a supporting surface (5-5) in contact with the shaft (6-1) and a positioning surface (5-4) in contact with the end face of the gear (6-2), and the positioning seat (5-3) is fixed to a base (1-4) of the workbench (1) through a bolt.

6. The gear and shaft cone interference assembly tool of claim 4, characterized in that: the plane of the lower end of the propulsion disc (5-1) and the propulsion cylinder (5-2) are provided with a spigot structure with a guiding function, and the spigot structure is a boss structure.

7. The assembly fixture for interference fit of the gear and the shaft cone as claimed in claim 1, characterized in that: oil pump B (4-1) mounting bracket from the top down includes dull and stereotyped (3-1), drum (3-2) and lower flat board (3-3) in proper order, go up dull and stereotyped (3-1) centre and be equipped with through-hole A, oil pump B case (4) pass from through-hole A, drum (3-2) middle part is equipped with through-hole B, oil pump A case (2) penetrate in drum (3-2) from through-hole B.

8. The assembly fixture for interference fit of the gear and the shaft cone as claimed in claim 7, characterized in that: the middle part of the cylinder (3-2) is provided with a plurality of through holes C.

9. The gear and shaft cone interference assembly tool of claim 2, characterized in that: the workbench (1) sequentially comprises a base (1-4), a table board (1-3), table feet (1-2) and a fixing plate (1-1) arranged at the bottom of the table feet (1-2) from top to bottom, the base (1-4) is fixed on the table board (1-3) through bolts, two open holes are formed in the table board (1-3) and used for penetrating through a booster (2-1) and a shaft (6-1), and the fixing plate (1-1) is connected with the ground through foundation bolts.

10. The assembly tool for interference fit of the gear and the shaft cone as claimed in claim 9, characterized in that: the oil pump B (4-1) mounting rack is connected with the base (1-4) of the workbench (1) through bolts.