CN216328116U - A shaft alignment test bench with linkage device - Google Patents

Abstract

The utility model discloses a shaft alignment test bench with a linkage device, which comprises a plurality of lift alignment devices and a test bed base; the plurality of lift alignment devices are evenly distributed on both sides of the bottom of the test bed base; A rotating bolt is arranged in the lifting and centering device. The rotating bolt is the driving shaft of the lifting and centering device. A nut is threaded on the rotating bolt; The other end is hinged with the same long connecting rod by means of hinge bolts, and the distance between the two ends of the adjacent short connecting rods is the same. On the premise of ensuring the alignment effect, it can reduce the number of workers required in the traditional alignment process and simplify the adjustment process.

Description

A shaft alignment test bench with linkage device

technical field

The utility model belongs to the field of test benches, and relates to a shaft alignment test bench with a linkage device.

Background technique

The test bench system is of great significance in the development and testing of aero-engines, ground gas turbines, marine gas turbines and other equipment. The test bench is particularly important as the basis of the test bench system. In order to ensure the stable operation of the test engine, the shafting alignment of the test engine and the load system is required before the test. A good shafting alignment will directly affect the development progress of the equipment and the accuracy of the test data, and can also prolong the life of the test bench and equipment.

The shaft alignment of the test bench generally adopts the method of installing dial indicators at both ends of the coupling. By cranking, the relative deviation between the shaft and the shaft is obtained, and the height of the platform on the equipment side or the generator side is adjusted artificially. and position to reduce misalignment and thus improve shaft and shaft alignment.

The traditional adjustment requires people to manually use a jack to lift the base of the test bench, and then change the height of each support by adding or reducing spacers, so as to adjust the horizontal position and inclination of the platform to adjust the axis of the equipment. the goal of. The adjustment requires the cooperation of multiple experienced workers, which is time-consuming and labor-intensive, and cannot be continuously adjusted due to the limited size of the gasket.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art, and to provide a shaft alignment test bench with a linkage device, which can reduce the number of workers required in the traditional alignment process on the premise of ensuring the alignment effect. , simplifying the adjustment process.

In order to achieve the above object, the utility model adopts the following technical solutions to be realized:

A shaft alignment test bench with linkage device includes a plurality of lift alignment devices and a test bed base;

A plurality of elevating centering devices are evenly distributed on both sides of the base of the test bench; the elevating centering device is provided with a rotating bolt, the rotating bolt is the driving shaft of the elevating centering device, and a nut is threaded on the rotating bolt;

One end of the short connecting rod is fixedly connected with the nut, the other end of the short connecting rod on the same side of the test bench base is hinged with the same long connecting rod, and the distance between the two ends of the adjacent short connecting rods is the same.

Preferably, a support is provided at the bottom of each lifting centering device.

Further, the lower surface of the lifting centering device and the support are fixed by bolts.

Preferably, the lifting and centering device includes a nut, a pressing block, a lifting block, a fixing block and a rotating bolt;

A nut, an extrusion block, a lifting block and a fixed block are arranged on the rotating bolt in sequence. The fixed block is fixedly connected with the rotating bolt, and the nut and the rotating bolt are threadedly matched. The two sides of the fixed block along the radial direction of the rotating bolt are the top and bottom surfaces. The surface is an inclined surface, the bottom surface of the lifting block and the top surface of the fixing block are slidably connected, and the end of the lifting block is fitted with the extrusion block.

Further, the top and bottom surfaces of the fixing block are inclined surfaces, and the lifting block is two pieces, which are respectively slidably connected with the top and bottom surfaces of the fixing block.

Further, the bottom surface of the lifting block is provided with a boss guide rail, the top surface of the fixing block is provided with a groove, and the boss guide rail is located in the groove.

Further, the bottom surface of the lifting block is an inclined surface.

Further, the end of the lifting block in contact with the extrusion block is provided with a convex block, the side of the extrusion block in contact with the lifting block is provided with a through groove, the convex block is located in the through groove, and the sliding direction of the convex block and the through groove is the radial direction of the rotating bolt. direction.

Further, the protrusions and the through grooves adopt a dovetail tenon structure.

Further, the extrusion block is provided with an axial through hole, the rotating bolt penetrates through the through hole of the extrusion block, and the rotating bolt is arranged with a gap between the inner wall of the through hole.

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

The utility model adjusts the height of the lifting centering device by rotating the rotating bolt of the lifting centering device, and can adjust the synchronous lifting and lowering of multiple lifting centering devices on the same side through the long connecting rod, so that the lifting centering device on the same side can be raised or lowered. By lowering, the relative height and relative angle of the base of the test bench are changed, and the centering adjustment can be realized; after the nut is removed, the adjustment of a single lifting centering device can be realized. On the premise of ensuring the alignment effect, the number of workers required in the traditional alignment process can be reduced, and the adjustment process can be simplified.

Further, by rotating the nut, the extruding block and the lifting block can be squeezed, so that the lifting block moves up and down along the slope of the fixed block, and the lifting block does not move axially, and the fixed block moves axially instead of the lifting block, thereby reducing the traditional test. The number of workers required in the shaft alignment process of the table system simplifies the adjustment process and does not need to prepare consumables such as gaskets. It can effectively improve the shaft alignment efficiency of the test bed system, provide a reliable alignment environment for the long-term stable operation of the test bed system, reduce the cost of the test bed, and can be widely used in aero-engines, ground gas turbines, marine gas turbines and other equipment. during development and testing.

Further, the arrangement of two lifting blocks can increase the radial moving distance of the device.

Further, the boss guide rail of the lifting block and the groove of the fixing block cooperate with each other, so that the fixing block can only move along the boss guide rail on the lifting block, so as to ensure that the fixing block does not shift.

Further, the protrusion of the lifting block is located in the through groove of the extrusion block, and can move up and down in the through groove to realize the limit of the lifting block.

Description of drawings

Fig. 1 is the overall front view of the test bench of the utility model;

Fig. 2 is the overall top view of the test bench of the utility model;

FIG. 3 is a schematic structural diagram of the lifting centering device of the present invention.

Among them: 1-support; 2-lifting and centering device; 3-test bench base; 4-nut; 5-short connecting rod; 6-long connecting rod; 7-hinged bolt; 8-extrusion block; 9-lifting block; 10-fixing block; 11-turning the bolt.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in FIG. 1 and FIG. 2 , the shafting centering test bench of the linkage device of the present invention includes a plurality of lifting centering devices 2 , a plurality of supports 1 and a test bench base 3 .

A plurality of lifting and centering devices 2 are evenly distributed on both sides of the base 3 of the test bench. In this embodiment, six lifting and centering devices 2 are used; In the drive shaft of the middle device 2, a nut 4 is threadedly connected to the rotating bolt 11. In this embodiment, the rotating bolt 11 adopts a hexagonal bolt.

Rotate the rotating bolt 11 clockwise, the lifting and centering device 2 will raise the height, and turn the rotating bolt 11 counterclockwise, the lifting and centering device 2 will lower the height. The reverse is also possible.

The nut 4 is fixedly connected with one end of the short connecting rod 5, the other end of the short connecting rod 5 on the same side of the test bench base 3 is hinged with the same long connecting rod 6 by the hinge bolt 7, and the two ends of the adjacent short connecting rod 5 are connected with each other. The spacing is the same.

Through the long connecting rod 6, multiple lifting and centering devices 2 on the same side can be adjusted to lift synchronously; the nut 4 can be removed from the lifting and centering device 2, and after removing the nut 4, the adjustment of a single lifting and centering device 2 can be realized.

A support 1 is provided at the bottom of each lifting and centering device 2 , and the lower surface of the lifting and centering device 2 and the support 1 are fixed by bolts.

As shown in FIG. 3 , the lifting and centering device 2 includes a nut 4 , a pressing block 8 , a lifting block 9 , a fixing block 10 and a rotating bolt 11 .

The rotating bolt 11 is sequentially provided with a nut 4, an extrusion block 8, a lifting block 9 and a fixing block 10. The end of the fixing block 10 is fixedly connected to one end of the rotating bolt 11. The nut 4 adopts a hexagonal nut 4, and the nut 4 and the rotating bolt 11 thread fit.

The extrusion block 8 is a square metal block, and the extrusion block 8 is provided with an axial through hole. The rotating bolt 11 penetrates through the through hole of the extrusion block 8, and the rotating bolt 11 is provided with a gap between the inner wall of the through hole.

The two sides of the fixed block 10 along the radial direction of the rotating bolt 11 are the top and bottom surfaces, the top and bottom surfaces of the fixed block 10 are inclined planes, the lifting block 9 and the fixing block 10 are made of metal blocks, the lifting block 9 has two upper and lower blocks, and the two lifting blocks 9 They are slidingly connected with the top and bottom surfaces of the fixed block 10 respectively. The contact surfaces of the two lifting blocks 9 and the fixed block 10 are also inclined planes. After the two lifting blocks 9 are attached to the fixed block 10, the overall top and bottom surfaces are parallel to the horizontal plane. .

The contact surface of the two lifting blocks 9 and the fixed block 10 is provided with a boss guide rail, the top surface of the fixed block 10 is provided with a groove, and the boss guide rail is located in the groove, so that the fixed block 10 can only follow the boss on the lifting block 9. The guide rail moves to ensure that the fixed block 10 does not shift.

The end of the lifting block 9 in contact with the extrusion block 8 is provided with a convex block, and the side of the extrusion block 8 in contact with the lifting block 9 is provided with a through groove, the convex block is located in the through groove, and the sliding direction of the convex block and the through groove is the rotating bolt. 11. In the radial direction, the convex block and the through groove adopt a dovetail structure, so that the two lifting blocks 9 will move up and down during the movement of the fixed block 10, thereby changing the height of the lifting centering device 2.

The test equipment is placed on the base 3 of the test bench. After the shaft system of the test equipment and the load device are connected, the eccentricity value of the shaft system of the test equipment and the shaft system of the load device is obtained by means of a dial indicator, and then the long connecting rod 6 is pushed forward. The latter moves backward, thereby driving the rotating bolt 11 of the linked lifting and centering device 2 to rotate clockwise or counterclockwise, so that the lifting and centering device 2 on the same side is raised or lowered, changing the relative height and height of the test bench base 3 . Relative angle, to achieve centering adjustment. When it is not necessary to adjust all the lifting and centering devices 2 on the same side, the nut 4 can be removed again, and only a single lifting and centering device 2 can be adjusted. In this way, the centering of the test bench system can be adjusted quickly and easily.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: it is still possible to Modifications or equivalent replacements to the specific embodiments of the present invention, without departing from the spirit and scope of the present invention, should be included within the protection scope of the claims of the present invention.

Claims (10)

1. A shafting centering test bed with a linkage device is characterized by comprising a plurality of lifting centering devices (2) and a test bed base (3);

a plurality of lifting centering devices (2) are uniformly distributed on the test bed base (3) and are positioned on two sides of the bottom; a rotating bolt (11) is arranged in the lifting centering device (2), the rotating bolt (11) is a driving shaft of the lifting centering device (2), and a nut (4) is connected to the rotating bolt (11) in a threaded manner;

the nut (4) is fixedly connected with one end of a short connecting rod (5), the other end of the short connecting rod (5) on the same side of the test bed base (3) is hinged with the same long connecting rod (6) through a hinge bolt (7), and the distance between two ends of adjacent short connecting rods (5) is the same.

2. A shafting centering test bench for linkage according to claim 1, wherein a support (1) is provided at the bottom of each lifting centering device (2).

3. The shafting centering test bed of the linkage device according to claim 2, wherein the lower surface of the lifting centering device (2) is fixed with the support (1) through bolts.

4. The shafting centering test bed of the linkage device according to claim 1, wherein the lifting centering device (2) comprises a nut (4), an extrusion block (8), a lifting block (9), a fixed block (10) and a rotating bolt (11);

the screw bolt-rotating type lifting device is characterized in that a nut (4), an extrusion block (8), a lifting block (9) and a fixed block (10) are sequentially arranged on a rotating bolt (11), the fixed block (10) is fixedly connected with the rotating bolt (11), the nut (4) is in threaded fit with the rotating bolt (11), the two surfaces of the fixed block (10) in the radial direction of the rotating bolt (11) are top and bottom surfaces, the top surface of the fixed block (10) is an inclined surface, the bottom surface of the lifting block (9) is in sliding connection with the top surface of the fixed block (10), and the end part of the lifting block (9) is attached to the extrusion block (8).

5. The shafting centering test bed of the linkage device according to claim 4, wherein the top and bottom surfaces of the fixed block (10) are both inclined surfaces, and the two lifting blocks (9) are respectively connected with the top and bottom surfaces of the fixed block (10) in a sliding manner.

6. The shafting centering test bed of the linkage device according to claim 4, wherein the bottom surface of the lifting block (9) is provided with a boss guide rail, the top surface of the fixed block (10) is provided with a groove, and the boss guide rail is positioned in the groove.

7. A shafting centering test bench for a linkage device according to claim 4, wherein the bottom surface of the lifting block (9) is a slope.

8. A shafting centering test bed of a linkage device according to claim 4, wherein one end of the lifting block (9) contacting with the extrusion block (8) is provided with a convex block, one side of the extrusion block (8) contacting with the lifting block (9) is provided with a through groove, the convex block is positioned in the through groove, and the sliding directions of the convex block and the through groove are the radial directions of the rotating bolt (11).

9. A shafting centering test bed for a linkage according to claim 8, wherein the boss and the through slot are of dovetail structure.

10. The shafting centering test bed of the linkage device according to claim 4, wherein the extrusion block (8) is provided with an axial through hole, the rotating bolt (11) penetrates through the through hole of the extrusion block (8), and the rotating bolt (11) is arranged in a clearance with the inner wall of the through hole.

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