Impeller mounting shaft and run-out testing device thereof

Abstract

The utility model discloses an impeller mounting shaft which comprises a mounting shaft body, the mounting shaft body is provided with a plurality of mounting blocks, the mounting shaft body is provided with clamping blocks on the two sides of the mounting blocks, and the clamping blocks are in threaded connection with the mounting blocks through first locking bolts. The utility model also discloses a run-out testing device, which comprises a base, the base is provided with a first supporting rod, the top of the first supporting rod is provided with a sleeving ring, the sleeving ring is slidably inserted with a mounting shaft body, the sleeving ring abuts against the outer side of a clamping block located at one side of the mounting shaft body, and the base is provided with a plurality of second supporting rods. The second supporting rods are in one-to-one correspondence with the mounting blocks in position, and clamping assemblies are vertically arranged at the tops of the second supporting rods. The positions of the mounting blocks arranged on the base are in one-to-one correspondence with the positions of the second supporting rods, so that the clamping assembly is quickly positioned above the mounting blocks, and a test instrument is more conveniently clamped on the clamping assembly and quickly performs a run-out test on the arc surfaces of the plurality of impellers mounted on the mounting blocks.

Description

Technical Field

[0001] The utility model relates to the technical field of impeller shafts, in particular to an impeller mounting shaft and a runout measuring device thereof. Background Art

[0002] The impeller shaft refers to both the through shaft with moving blades, which is a component of the impulse steam turbine rotor, and the general term for the impeller and the rotating blades installed on it. Impellers can be classified according to their shape and opening and closing conditions.

[0003] In the prior art, the impeller is mounted on the impeller shaft and can achieve synchronous rotation. When it is necessary to perform a runout test on the arc surfaces of multiple impellers on the same impeller shaft, since the impeller shaft in the prior art has no positioning structure, multiple testing instruments need to be positioned one by one on the arc surface of each impeller, which is very inconvenient to operate. Utility Model Content

[0004] The utility model aims to solve the problem that it is inconvenient to perform runout test on the arc surfaces of multiple impellers on the installation shaft using the existing impeller installation shaft, and provides an impeller installation shaft and a runout test device thereof.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] The present application provides an impeller mounting shaft body and a vibration measuring device thereof, comprising:

[0007] The installation shaft body is provided with a plurality of installation blocks evenly spaced along its axial direction. The installation shaft body is located at

[0008] The mounting block

[0009] A clamping block is provided on the side, and the clamping block is threadedly connected to the mounting block through a first locking bolt.

[0010] Furthermore, in some embodiments of the present utility model, the clamping block is provided with a first limiting block, the mounting block is provided with a limiting groove, and the first limiting block is embedded in the limiting groove.

[0011] Furthermore, in some embodiments of the present invention, the

[0012] Base,

[0013] The base is provided with a first support rod, the top of the first support rod is provided with a sleeve ring, the sleeve ring is slidably inserted with the installation shaft body, and the sleeve ring abuts against the outer side of the clamping block located on one side of the installation shaft body.

[0014] The base is evenly spaced with a plurality of second support rods along its extension direction, the positions of the second support rods correspond one to one with the mounting blocks, a clamping assembly is vertically disposed on the top of the second support rods, and the clamping assembly is located above the mounting block.

[0015] Further, in some embodiments of the present utility model, the base is provided with a first sleeve, and the first sleeve is slidably sleeved on the first support rod;

[0016] The first sleeve is provided with a plurality of first through holes at even intervals, the first support rod is provided with a plurality of first fixing holes at even intervals, and the first sleeve and the first support rod are threadedly connected with the first fixing holes through second locking bolts passing through the first through holes.

[0017] Furthermore, in some embodiments of the present invention, the clamping assembly includes

[0018] A second sleeve vertically connected to the second support rod, the second sleeve being provided with a slide groove, a slide rod being slidably provided in the slide groove, and the slide rod being located above the mounting block;

[0019] A second limit block is provided at one end of the slide bar facing inward, and a telescopic spring is provided at the slide bar sleeve, one end of the telescopic spring abuts against the second limit block, and the other end of the telescopic spring abuts against the inner wall of the second sleeve;

[0020] One side of the sliding rod and one side of the second sleeve are both provided with clamping blocks.

[0021] Furthermore, in some embodiments of the present invention, a placement plate is provided at the bottom of the second sleeve, and the placement plate is provided with a second through hole.

[0022] Further, in some embodiments of the present utility model, the base is provided with a third sleeve, and the third sleeve is slidably sleeved on the second support rod;

[0023] The third sleeve is provided with a plurality of third through holes at even intervals, the second support rod is provided with a plurality of second fixing holes at even intervals, the third sleeve and the second support rod are threadedly connected with the second fixing holes through third locking bolts passing through the third through holes.

[0024] The beneficial effects of the utility model are:

[0025] 1. By setting the position of the mounting block on the base in one-to-one correspondence with the position of the second support rod, the clamping assembly can be quickly positioned above the mounting block, thereby making it easier to clamp the test instrument on the clamping assembly and quickly perform a runout test on the arc surfaces of multiple impellers mounted on the mounting block.

[0026] 2. By providing the first sleeve and allowing the first support rod to slide in the first sleeve, the height of the first support rod can be adjusted, making it easier to perform a runout test when the installation shaft is fixed at different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of an impeller mounting shaft and a runout test device thereof provided in an embodiment of the utility model;

[0028] Figure 2 A cross-sectional view of the installation shaft position provided for an embodiment of the utility model;

[0029] Figure 3 A cross-sectional view of the position of the clamping assembly provided in an embodiment of the present utility model.

[0030] In the figure, 1-base, 11-first support rod, 111-sleeve ring, 112-first fixing hole, 12-second support rod, 121-second fixing hole, 13-first sleeve, 131-first through hole, 14-third sleeve, 141-third through hole, 2-mounting shaft body, 21-mounting block, 211-limiting groove, 22-clamping block, 221-first limiting block, 3-first locking bolt, 4-clamping assembly, 41-second sleeve, 411-slide groove, 42-slide rod, 412-placing plate, 4121-second through hole, 42-slide rod, 421-second limiting block, 422-telescopic spring, 5-second locking bolt, 6-clamping block, 7-third locking bolt. DETAILED DESCRIPTION

[0031] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0032] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0033] Example

[0034] like Figures 1 to 3 Shown

[0035] An impeller mounting shaft and a runout test device thereof, comprising a base 1, wherein the base 1 is provided with a first support rod 11; the base 1 is provided with a first sleeve 13, and the first sleeve 13 is slidably sleeved on the first support rod 11; the first sleeve 13 is evenly spaced with a plurality of first through holes 131, and the first support rod 11 is evenly spaced with a plurality of first fixing holes 112, and the first sleeve 13 and the first support rod 11 are threadedly connected through the second locking bolt 5 passing through the first through hole 131 and the first fixing hole 112; by arranging the first sleeve 13 on the base 1, the first support rod 11 can slide in the first sleeve 13, so that the height of the top of the first support rod 11 can be adjusted; and after adjusting to a suitable height, the first locking bolt 3 can be passed through the first through hole of the corresponding height and locked and fixed with the corresponding first fixing hole 112;

[0036] A sleeve ring 111 is provided on the top of the first support rod 11, and the sleeve ring 111 is slidably inserted with a mounting shaft body 2; the mounting shaft body 2 is provided with a plurality of mounting blocks 21 evenly spaced along its axial direction, and the mounting shaft body 2 is provided with clamping blocks 22 on both sides of the mounting blocks 21, and the clamping blocks 22 are threadedly connected to the mounting blocks 21 through first locking bolts 3; the sleeve ring 111 abuts against the outer side of the clamping block 22 located on one side of the mounting shaft body 2; the clamping block 22 is provided with a first limiting block 221, and the mounting block 21 is provided with a limiting groove 211, and the first limiting block 221 is embedded in the limiting groove 211; by Two clamping blocks 22 are provided on both sides of 21, and after the impeller is installed on the mounting block 21, the clamping blocks 22 on both sides can be locked with the mounting block 21, so that the impeller and the mounting shaft body 2 become one; by providing the sleeve ring 111, the mounting shaft body 2 can be inserted into the sleeve ring 111 and the sleeve ring 111 can be abutted against the outer side of the outermost clamping block 22, so as to complete the positioning of the sleeve ring 111 and the mounting block 21, and then complete the positioning of the sleeve ring 111 and the impeller; and by providing the limit block and the limit groove 211, it can prevent the clamping block 22 from excessively squeezing and damaging the impeller; optionally, the mounting block 21 of this embodiment can be set to have a cross section of three arcs;

[0037] The base 1 is provided with a plurality of second support rods 12 at even intervals along its extension direction, and the positions of the second support rods 12 and the mounting blocks 21 correspond one to one; the base 1 is provided with a third sleeve 14, and the third sleeve 14 can be slidably sleeved on the second support rod 12; the third sleeve 14 is provided with a plurality of third through holes 141 at even intervals, and the second support rod 12 is provided with a plurality of second fixing holes 121 at even intervals, and the third sleeve 14 and the second support rod 12 are threadedly connected through the third locking bolts 7 passing through the third through holes 141 and the second fixing holes 121; by setting The second support rod 12 can be positioned by the second support rod 12 and the first support rod 11, so as to realize the positioning of the second support rod 12 and the mounting block 21; and by arranging the third sleeve 14 on the base 1 and allowing the second support rod 12 to slide in the third sleeve 14, the top height of the second support rod 12 can be adjusted, and the third locking bolt 7 is passed through the corresponding third through hole 141 and locked and fixed with the corresponding second fixing hole 121, so that the top position of the second support rod 12 and the position of the impeller with different outer diameters installed on the mounting block 21 can be positioned corresponding to each other;

[0038] A clamping assembly 4 is vertically provided on the top of the second support rod 12, and the clamping assembly 4 is located above the mounting block 21; the clamping assembly 4 includes a second sleeve 41 vertically connected to the second support rod 12, the second sleeve 41 is provided with a slide groove 411, a slide rod 4242 is slidably provided in the slide groove 411, and the slide rod 4242 is located above the mounting block 21; a second limiting block 421 is provided at one end of the slide rod 4242 facing inward, and a telescopic spring 42 is sleeved on the slide rod 4242 2, one end of the telescopic spring 422 abuts against the second limit block 421, and the other end of the telescopic spring 422 abuts against the inner wall of the second sleeve 41; one side of the sliding rod 4242 and one side of the second sleeve 41 are both provided with a clamping block 6; a placement plate 412 is provided at the bottom of the second sleeve 41, and the placement plate 412 is provided with a second through hole 4121; by arranging a clamping assembly 4 at the top of the second support rod 12, the test instrument can be directly positioned to the installation position after being clamped on the clamping assembly 4. The top of the mounting block 21 is convenient for quickly performing a runout test on the surface arc of the impeller installed on the mounting block 21; and by arranging a slidable slide bar 4242 in the second sleeve 41 and sleeved with a telescopic spring 422 on the slide bar 4242, the slide bar 4242 can be pulled so that the second limit block 421 at the end of the slide bar 4242 squeezes the compression spring, thereby pulling out the slide bar 4242, and then the test instrument is placed on the slide bar 4242, and the compression spring is released so that the extended length of the slide bar 4242 matches the width of the test instrument, and then the test instrument is clamped by the clamping block 6 at the outer end of the slide bar 4242 and the clamping block 6 on the second sleeve 41, so the design structure is simple and the operation is more convenient; and by arranging a placement plate 412 at the bottom of the sleeve, the bottom of the test instrument can be lifted while clamping the test instrument, and the test head of the test instrument can be passed through the second through hole 4121 on the placement plate 412, which is convenient for testing and can better prevent the instrument from falling.

[0039] The working mode of this device:

[0040] In actual use, multiple impellers can be put on the mounting block 21 one by one, and then the clamping blocks 22 are put on the mounting shaft body 2 from both sides of the mounting block 21, and the clamping blocks 22 and the mounting block 21 are locked by the first locking bolts 3, so that the two clamping blocks 22 clamp and fix the impeller on the mounting block 21. When it is necessary to perform an arc test on the arc surface of the impeller, it is only necessary to drive one end of the mounting shaft body 2 to make the impeller and the mounting shaft body 2 rotate together, and the other end of the mounting shaft body 2 is inserted into the sleeve ring 111, and the sleeve ring 111 is abutted against the outer side of the clamping block 22 at the end, so that the position of the clamping assembly 4 can be located above the impeller, thereby realizing rapid positioning of multiple impellers and the clamping assembly 4, and then it is only necessary to clamp the test instrument to the clamping assembly 4, so that the test head of the test instrument can directly perform a runout test on the arc surface of the impeller, which is more convenient and quick; there is no need to remove the mounting shaft body 2 from the sleeve ring 111 during testing.

[0041] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. An impeller mounting shaft, characterized in that: include The mounting shaft body (2) is provided with a plurality of mounting blocks (21) evenly spaced along its axial direction, the mounting shaft body (2) is provided with clamping blocks (22) on both sides of the mounting blocks (21), and the clamping blocks (22) are threadedly connected to the mounting blocks (21) via first locking bolts (3).

2. The impeller mounting shaft according to claim 1, characterized in that: The clamping block (22) is provided with a first limiting block (221), the mounting block (21) is provided with a limiting groove (211), and the first limiting block (221) is embedded in the limiting groove (211).

3. A jitter test device, characterized in that: An impeller mounting shaft according to any one of claims 1 to 2, comprising a base (1), The base (1) is provided with a first support rod (11), the top of the first support rod (11) is provided with a sleeve ring (111), the sleeve ring (111) is slidably inserted with the installation shaft body (2), and the sleeve ring (111) abuts against the outer side of the clamping block (22) located on one side of the installation shaft body (2). The base (1) is provided with a plurality of second support rods (12) at even intervals along its extension direction, the positions of the second support rods (12) and the mounting blocks (21) corresponding one to one, and a clamping assembly (4) is vertically provided on the top of the second support rod (12), and the clamping assembly (4) is located above the mounting block (21).

4. A jitter test device according to claim 3, characterized in that: The base (1) is provided with a first sleeve (13), and the first sleeve (13) is slidably sleeved on the first support rod (11); The first sleeve (13) is provided with a plurality of first through holes (131) at even intervals, and the first support rod (11) is provided with a plurality of first fixing holes (112) at even intervals. The first sleeve (13) and the first support rod (11) are threadedly connected to the first fixing hole (112) through a second locking bolt (5) that passes through the first through hole (131).

5. A jitter test device according to claim 4, characterized in that: The clamping assembly (4) comprises a second sleeve (41) vertically connected to the second support rod (12), the second sleeve (41) being provided with a slide groove (411), a slide rod (42) being slidably provided in the slide groove (411), and the slide rod (42) being located above the mounting block (21); A second limit block (421) is provided at one inward end of the slide bar (42), and a telescopic spring (422) is sleeved on the slide bar (42), one end of the telescopic spring (422) abuts against the second limit block (421), and the other end of the telescopic spring (422) abuts against the inner wall of the second sleeve (41); A clamping block (6) is provided on one side of the sliding rod (42) and one side of the second sleeve (41).

6. A jitter test device according to claim 5, characterized in that: A placement plate (412) is provided at the bottom of the second sleeve (41), and the placement plate (412) is provided with a second through hole (4121).

7. A jitter test device according to claim 3, characterized in that: The base (1) is provided with a third sleeve (14), and the third sleeve (14) is slidably sleeved on the second support rod (12); The third sleeve (14) is provided with a plurality of third through holes (141) at even intervals, and the second support rod (12) is provided with a plurality of second fixing holes (121) at even intervals. The third sleeve (14) and the second support rod (12) are threadedly connected to the second fixing holes (121) through third locking bolts (7) passing through the third through holes (141).

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