CN216229261U

CN216229261U - Shafting centering device and test bench

Info

Publication number: CN216229261U
Application number: CN202122794591.2U
Authority: CN
Inventors: 张蒙; 肖俊峰; 高松; 上官博; 闫安; 于飞龙; 段静瑶
Original assignee: Xian Thermal Power Research Institute Co Ltd
Current assignee: Xian Thermal Power Research Institute Co Ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-04-08
Anticipated expiration: 2031-11-15

Abstract

The utility model discloses a shafting centering device and a test bed, which comprise a nut, a cushion block, a moving block, a wedge block and a screw rod; the screw is sequentially provided with a nut, a cushion block, a moving block and a wedge block, the wedge block is fixedly connected with the screw, the nut is in threaded fit with the screw, the two surfaces of the wedge block in the radial direction of the screw are top and bottom surfaces, the top surface of the wedge block is an inclined surface, the bottom surface of the moving block is in sliding connection with the top surface of the wedge block, and the end part of the moving block is attached to the cushion block. Through swivel nut, can extrude cushion and movable block, make the movable block reciprocate along the inclined plane of wedge to can reduce the required workman's number of traditional test bench system shafting centering in-process, simplify the adjustment process, need not to prepare consumptive materials such as gasket. The shafting centering efficiency of the test bed system can be effectively improved, a reliable centering environment is provided for long-term stable operation of the test bed system, and the cost of the test bed is reduced.

Description

Shafting centering device and test bench

Technical Field

The utility model belongs to the field of shafting centering, and relates to a shafting centering device and a test bed.

Background

The test bed system has important significance in the research and test processes of equipment such as aeroengines, ground gas turbines, marine gas turbines and the like, and the stability of the test bed system can directly influence the research and development progress of the equipment and the accuracy of test data.

The shafting centering of the test bed system is the key for ensuring the stable operation of the test and the safety of the equipment. Meanwhile, the service life of the test bed and equipment can be prolonged due to good shafting centering.

The shafting of test bench is centering adopts the method of installing percentage table at shaft coupling both ends generally, through the barring, obtains the relative deviation between axle and the axle, and platform height and position through artifical adjustment equipment side or generator side reduce the deviation to improve the centering level of axle and axle.

The traditional adjustment needs a person to manually lift the platform by using a jack, and then the height of each supporting part is changed by increasing or reducing the number of the gaskets, so that the horizontal position and the inclination of the platform are adjusted, and the purpose of adjusting the axis of the equipment is achieved. The adjustment requires the cooperation of a plurality of workers, is time-consuming and labor-consuming, and cannot be continuously adjustable due to the limited size of the gasket.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a shaft system centering device and a test bed, which can conveniently and quickly adjust the centering of a test bed system.

In order to achieve the purpose, the utility model adopts the following technical scheme to realize the purpose:

a shafting centering device comprises a nut, a cushion block, a moving block, a wedge block and a screw rod;

the screw is sequentially provided with a nut, a cushion block, a moving block and a wedge block, the wedge block is fixedly connected with the screw, the nut is in threaded fit with the screw, the two surfaces of the wedge block in the radial direction of the screw are top and bottom surfaces, the top surface of the wedge block is an inclined surface, the bottom surface of the moving block is in sliding connection with the top surface of the wedge block, and the end part of the moving block is attached to the cushion block.

Preferably, the top and bottom surfaces of the wedge-shaped block are inclined surfaces, and the two moving blocks are respectively connected with the top and bottom surfaces of the wedge-shaped block in a sliding manner.

Preferably, the bottom surface of the moving block is provided with a boss guide rail, the top surface of the wedge block is provided with a groove, and the boss guide rail is positioned in the groove.

Preferably, the bottom surface of the moving block is an inclined surface.

Preferably, a convex block is arranged at one end, in contact with the cushion block, of the moving block, a through groove is arranged at one side, in contact with the cushion block, of the cushion block, the convex block is located in the through groove, and the sliding directions of the convex block and the through groove are the radial directions of the screw rod.

Furthermore, the lug and the through groove adopt dovetail structures.

Preferably, an axial through hole is formed in the cushion block, the screw rod penetrates through the through hole of the cushion block, and a gap is formed between the screw rod and the inner wall of the through hole.

A test bed comprises a base platform and supports, wherein a plurality of supports are arranged on two sides of the bottom of the base platform, a shafting centering device is arranged between each support and the bottom of the base platform, and the bottom of the base platform is in contact with the top surface of a moving block.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the cushion block and the moving block can be extruded by rotating the nut, so that the moving block moves up and down along the inclined surface of the wedge block, the moving block is axially fixed, and the wedge block replaces the moving block to axially move, so that the number of workers required in the shafting centering process of the traditional test bed system can be reduced, the adjusting process is simplified, and consumables such as gaskets are not required to be prepared. The shafting centering efficiency of the test bed system can be effectively improved, a reliable centering environment is provided for long-term stable operation of the test bed system, the cost of the test bed is reduced, and the test bed system can be widely applied to the development and test processes of equipment such as an aircraft engine, a ground gas turbine, a marine gas turbine and the like.

Further, the radial moving distance of the device can be increased by arranging the two moving blocks.

Furthermore, the boss guide rail of the moving block is matched with the groove of the wedge block, so that the wedge block can only move along the boss guide rail on the moving block, and the wedge block is ensured not to deviate.

Furthermore, the convex block of the moving block is positioned in the through groove of the cushion block and can move up and down in the through groove, so that the limiting of the moving block is realized.

Drawings

FIG. 1 is a front view of a shafting centering apparatus;

FIG. 2 is a top view of the shafting centering device.

Wherein: 1. a nut; 2. cushion blocks; 3. a moving block; 4. a wedge block; 5. a screw.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings:

as shown in fig. 1, the shafting centering device according to the present invention includes a nut 1, a spacer 2, a moving block 3, a wedge block 4 and a screw 5.

The screw rod 5 is sequentially provided with a nut 1, a cushion block 2, a moving block 3 and a wedge block 4, the end part of the wedge block 4 is fixedly connected with one end of the screw rod 5, the nut 1 is a hexagonal nut, and the nut 1 is in threaded fit with the screw rod 5.

Cushion 2 adopts square metal block, is provided with axial through-hole on cushion 2, and screw rod 5 runs through the through-hole of cushion 2, and screw rod 5 sets up with through-hole inner wall clearance.

Wedge 4 is a bottom surface along the two sides of 5 radial directions on screw rod, and 4 top bottom surfaces on wedge are the inclined plane, and movable block 3 and wedge 4 all adopt the metal block, and two blocks 3 about having, two movable blocks 3 cooperate with 4 top bottom surface sliding connection on wedge respectively, and two movable blocks 3 are the inclined plane with 4 contact surfaces on wedge equally, and behind two movable blocks 3 laminating wedges 4, holistic top surface and bottom surface are parallel with the horizontal plane.

As shown in fig. 2, the contact surfaces of the two moving blocks 3 and the wedge block 4 are provided with boss guide rails, the top surface of the wedge block 4 is provided with grooves, and the boss guide rails are located in the grooves, so that the wedge block 4 can only move along the boss guide rails on the moving blocks 3, and the wedge block 4 is ensured not to deviate.

As shown in fig. 2, one end of the moving block 3 in contact with the cushion block 2 is provided with a convex block, one side of the cushion block 2 in contact with the moving block 3 is provided with a through groove, the convex block is located in the through groove, the sliding direction of the convex block and the through groove is the radial direction of the screw 5, and the convex block and the through groove adopt a dovetail structure, so that the two moving blocks can move up and down along with the sliding direction in the moving process of the wedge block 4, and the height of the shafting centering device is changed.

When shafting centering device uses at the test bench, the test bench includes base platform and support, base platform bottom both sides are provided with a plurality of supports, according to the shafting centering device of the corresponding quantity of test bench system support quantity mountable, the support of general test bench system is located the both sides of base platform respectively, there are 3 ~ 4 supports in each side, every supports the top and all is provided with a shafting centering device, be located between base platform and the support, movable block 3 of lower part can with support the rigid coupling, guarantee that shafting centering device self is firm, movable block 3 on upper portion contacts with the base platform bottom of test bench.

The process of the test bed provided with the shafting centering device in shafting centering is as follows: after the eccentricity values of a test device shafting and a gear box or a generator shafting are obtained through a dial indicator measuring mode, a spanner matched with the hexagonal nut is used for screwing the nut 1, so that the wedge block 4 is moved, and the moving block 3 is moved up and down. The shafting centering devices at the supporting positions of the test bed base platform are adjusted respectively, the relative height and the relative angle of the base platform are changed, and centering adjustment is achieved. Therefore, the centering of the test bed system can be conveniently and quickly adjusted.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims

1. The shafting centering device is characterized by comprising a nut (1), a cushion block (2), a moving block (3), a wedge block (4) and a screw (5);

nut (1), cushion (2), movable block (3) and wedge (4) have set gradually on screw rod (5), wedge (4) and screw rod (5) fixed connection, nut (1) and screw rod (5) screw-thread fit, wedge (4) are top bottom surface along screw rod (5) radial direction's two sides, wedge (4) top surface is the inclined plane, movable block (3) bottom surface and wedge (4) top surface sliding connection, movable block (3) tip and cushion (2) laminating setting.

2. The shafting centering device as claimed in claim 1, wherein the top and bottom surfaces of the wedge-shaped block (4) are inclined surfaces, and the two moving blocks (3) are respectively connected with the top and bottom surfaces of the wedge-shaped block (4) in a sliding manner.

3. The shafting centering device as claimed in claim 1, wherein the bottom surface of the moving block (3) is provided with a boss guide rail, the top surface of the wedge block (4) is provided with a groove, and the boss guide rail is positioned in the groove.

4. Shafting centering device according to claim 1, characterized in that the bottom surface of the moving block (3) is a bevel.

5. A shafting centering device according to claim 1, wherein the end of the moving block (3) contacting the spacer block (2) is provided with a projection, the side of the spacer block (2) contacting the moving block (3) is provided with a through groove, the projection is located in the through groove, and the sliding direction of the projection and the through groove is the radial direction of the screw (5).

6. A shafting centering device according to claim 5, wherein the boss and the through slot are of dovetail structure.

7. A shafting centering device according to claim 1, wherein an axial through hole is formed in the spacer block (2), the screw rod (5) penetrates through the through hole of the spacer block (2), and the screw rod (5) is arranged in a clearance with the inner wall of the through hole.

8. A test bench is characterized by comprising a base platform and supports, wherein a plurality of supports are arranged on two sides of the bottom of the base platform, a shafting centering device as claimed in any one of claims 1 to 7 is arranged between each support and the bottom of the base platform, and the bottom of the base platform is in contact with the top surface of a moving block (3).