CN220084290U

CN220084290U - Rigidity-adjustable cushion block

Info

Publication number: CN220084290U
Application number: CN202321187812.2U
Authority: CN
Inventors: 李清臣
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2023-05-16
Filing date: 2023-05-16
Publication date: 2023-11-24
Anticipated expiration: 2033-05-16

Abstract

The utility model provides a cushion block with adjustable rigidity, which comprises the following components: the base is provided with a fixing hole on the top surface; the rigidity adjusting assembly is configured at the outer edge of the base and comprises N strip-shaped adjusting plates, the first ends of the adjusting plates are detachably connected with the top surface of the base, and the second ends of the adjusting plates are detachably connected with the bottom surface of the base, wherein N is more than or equal to 3. According to the cushion block with adjustable rigidity, the rigidity of the cushion block is changed by changing the installation quantity of the adjusting plates, so that the installation condition of a client side can be simulated, and the accuracy of motor vibration test is improved. And under the condition that the motor is installed on the cushion block, the motor can be conveniently and quickly detached and installed without removing the motor, so that various installation conditions can be simulated after one-time motor hoisting, the hoisting and installation of the motor are avoided, the installation time is saved, and the preparation and manufacturing cost of the motor test tool is also saved.

Description

Rigidity-adjustable cushion block

Technical Field

The embodiment of the utility model relates to the field of testing, in particular to a cushion block with adjustable rigidity.

Background

When the motor is subjected to routine factory vibration test, the motor needs to be installed on the vibrating table, and the installation mode and the installation condition of the motor can have a certain influence on the accuracy of a vibration test result. There are two mounting modes specified in the IEC 60034-14 standard: the first is a rigid mounting mode, and the second is a flexible mounting mode, and the two mounting modes can not completely simulate the mounting condition of the motor on the site of a customer, so that the real vibration condition of the motor mounted on the customer frame can not be tested. Therefore, when the motor which is subjected to factory vibration test and is qualified in test is mounted on a rack on a client side, the condition that the vibration is unqualified often occurs, so that a great deal of time and labor are required for debugging and testing again, and even the motor is required to be returned to a factory for repair, thereby wasting a great deal of cost.

Disclosure of Invention

The utility model aims to overcome the defect that in the prior art, the test accuracy is low due to the fact that the actual installation condition of equipment on a client side cannot be simulated in the factory vibration test of the equipment, and provides a cushion block with adjustable rigidity.

The utility model solves the technical problems by the following technical scheme:

the embodiment of the utility model provides a cushion block with adjustable rigidity, which comprises the following components:

the base is provided with a fixing hole on the top surface;

the rigidity adjusting assembly is configured at the outer edge of the base and comprises N strip-shaped adjusting plates, the first ends of the adjusting plates are detachably connected with the top surface of the base, and the second ends of the adjusting plates are detachably connected with the bottom surface of the base, wherein N is more than or equal to 3.

In one embodiment, the base comprises:

the fixing holes are positioned on the top plate and are light holes;

a bottom plate;

the upper end of the left side plate is fixedly connected with the 1A end of the top plate, and the lower end of the left side plate is fixedly connected with the 1A end of the bottom plate;

the upper end of the right side plate is fixedly connected with the 1B end of the top plate, and the lower end of the right side plate is fixedly connected with the 1B end of the bottom plate;

the installation structure comprises a top plate, a bottom plate and an adjusting plate, wherein a plurality of installation holes are respectively formed in the 2A end side surface and the 2B end side surface of the top plate, a plurality of installation holes are respectively formed in the 2A end side surface and the 2B end side surface of the bottom plate, the installation holes are used for installing the adjusting plate, and the installation holes extend along the second direction.

In one embodiment, the top plate and the bottom plate are U-shaped plates, and the mounting holes are formed in the side edges of the U-shaped plates.

In one embodiment, the mounting hole is a threaded hole; or, the mounting hole is a light hole.

In one embodiment, the fixing hole is disposed at the center of the top plate, and the bottom plate is symmetrical with the top plate.

In one embodiment, the left side plate is symmetrical to the right side plate, the upper end of the left side plate and the upper end of the right side plate are respectively welded with the U-shaped inner wall of the top plate, and the lower end of the left side plate and the lower end of the right side plate are respectively welded with the U-shaped inner wall of the bottom plate.

In one embodiment, the left side plate and the right side plate are respectively provided with at least one lightening hole.

In one embodiment, two lightening holes are symmetrically disposed along a vertical central axis of the side plate, and the lightening holes sequentially comprise:

the starting point end of the first inclined edge is arranged on the vertical side edge of the side plate;

the included angle between the second horizontal edge and the first inclined edge is an obtuse angle;

the included angle between the third inclined edge and the second horizontal edge is an obtuse angle;

a fourth vertical side;

a fifth inclined edge which is symmetrical with the third inclined edge relative to the horizontal central axis of the side plate;

a sixth horizontal edge, the sixth horizontal edge being symmetrical with the second horizontal edge with respect to a horizontal central axis of the side plate;

and a seventh oblique side which is symmetrical with the first oblique side with respect to a horizontal center axis of the side plate.

In one embodiment, the stiffness adjustment assembly comprises M thickness adjustment plates, M being greater than or equal to 2;

in one embodiment, the top surface of the base is provided with a cushion pad.

The cushion block with adjustable rigidity has a simple structure, and the rigidity of the cushion block is changed by changing the installation quantity of the adjusting plates, so that the installation condition of a client can be simulated, and the accuracy of motor vibration test is improved. And under the condition that the motor is installed on the cushion block, the motor can be conveniently and quickly detached and installed without removing the motor, so that various installation conditions can be simulated after one-time motor hoisting, the hoisting and installation of the motor are avoided, the installation time is saved, and the preparation and manufacturing cost of the motor test tool is also saved.

Drawings

The following drawings are only for purposes of illustration and explanation of the present utility model and are not intended to limit the scope of the utility model. Wherein,

FIG. 1 shows a schematic view of a base according to an embodiment of the utility model;

FIG. 2 shows a schematic view of a stiffness adjustable cushion block according to an embodiment of the utility model;

FIG. 3 shows an assembled schematic diagram of a vibration test using the adjustable stiffness pad of the present utility model;

reference numerals illustrate:

10: a cushion block;

11: a base;

111: a top plate;

1111: a fixing hole;

1112: a mounting hole;

112: a bottom plate;

113: a left side plate;

114: a right side plate;

MN is the horizontal central axis of the side plate;

m 'N' is the vertical central axis of the side plate;

CD, first bevel edge;

DE: a second horizontal side;

EF is a third bevel edge;

FG: fourth vertical side;

a fifth hypotenuse;

HI, sixth horizontal edge;

IJ, seventh bevel edge;

12, adjusting the plate;

13, a bolt;

20: a motor;

30: a test platform;

Detailed Description

The present utility model will be described in further detail below with reference to the drawings and examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other technical solutions obtained by a person skilled in the art based on the embodiments of the present utility model fall within the scope of protection of the present utility model.

Based on the above problems, embodiments of the present utility model provide a cushion block 10 with adjustable rigidity to at least partially solve the above technical problems.

The embodiment of the utility model provides a cushion block 10 with adjustable rigidity, which comprises a base 11 and a rigidity adjusting assembly. As shown in fig. 1 and 2, the top surface of the base 11 is provided with a fixing hole 1111 for installing the motor 20, the rigidity adjusting assembly is configured at the outer edge of the base 11, the rigidity adjusting assembly comprises N elongated adjusting plates 12, a first end of each adjusting plate 12 is detachably connected with the top surface of the base 11, a second end of each adjusting plate 12 is detachably connected with the bottom surface of the base 11, N is greater than or equal to 3, and the rigidity of the cushion block 10 can be changed by changing the number of the adjusting plates 12 installed on the base 11. When the motor 20 is subjected to factory vibration test, the motor 20 is fixed on the cushion block 10, the cushion block 10 is fixed on the vibrating table, and the rigidity of the cushion block 10 is changed by adjusting the number of the adjusting plates 12 arranged on the base 11, so that the installation conditions of a customer side are simulated.

As shown in fig. 3, when the motor 20 is tested, one pad 10 is required to be placed on each of four feet of the motor 20, that is, four pads 10 are required for one test. In the factory vibration test, in order to ensure the accuracy of the test result, it is generally necessary to simulate vibration under various installation conditions, that is, to perform vibration test using the pads 10 having different rigidity, respectively. The spacer 10 of the embodiment of the present utility model is to change the rigidity of the spacer 10 by mounting a different number of adjustment plates 12 on the base 11. Therefore, after the test is performed under the condition of rigidity, the motor 20 is not required to be removed, and the disassembly and the assembly operation of the adjusting plate 12 can be directly performed on the cushion block 10 provided with the motor 20, so that various assembly conditions can be simulated after the motor 20 is hoisted once, the hoisting and the assembly of the motor 20 are avoided for a plurality of times, the assembly time is saved, and the preparation and manufacturing cost of the test tool is also saved.

As an example of the spacer 10 shown in table 1, 6 adjusting plates 12 are co-packaged, and 7 kinds of rigidity of the spacer 10 can be adjusted by changing the number of the adjusting plates 12 mounted on the base 11 as shown in table 1. When the factory test is performed, the same or similar cushion block rigidity can be selected in table 1 according to the installation condition of the client side (namely, the rigidity of the frame for installing the motor of the client side), and the corresponding number of adjusting plates 12 are installed on the base 11, so that the rigidity of the frame for installing the client side is simulated, and the accuracy of the test result is improved.

TABLE 1

In one implementation, the base 11 includes a top plate 111, a bottom plate 112, a left side plate 113, and a right side plate 114, wherein the fixing hole 1111 is located on the top plate 111, and the fixing hole 1111 is a light hole. As shown in fig. 1, the upper end of the left side plate 113 is fixedly connected to the 1A end of the top plate 111, and the lower end of the left side plate 113 is fixedly connected to the 1A end of the bottom plate 112; the upper end of the right side plate 114 is fixedly connected with the 1B end of the top plate 111, and the lower end of the right side plate 114 is fixedly connected with the 1B end of the bottom plate 112. The 2A end side surface and the 2B end side surface of the top plate 111 are respectively provided with a plurality of mounting holes 1112, the 2A end side surface and the 2B end side surface of the bottom plate 112 are respectively provided with a plurality of mounting holes 1112, the mounting holes 1112 are used for mounting the adjusting plate 12, and the mounting holes 1112 extend along the second direction. The ends 1A and 2A are two ends in the first direction, and the ends 2A and 2B are two ends in the second direction, as shown in fig. 1, where the first direction is perpendicular to the second direction.

The base 11 is composed of four plates, namely a top plate 111, a bottom plate 112, a left side plate 113 and a right side plate 114, so that on one hand, materials of the base 11 are less, and the material cost is reduced; on the other hand, reducing the material may also reduce the rigidity of the base 11 itself. As can be seen from table 1, the rigidity of the pad 10 is minimum without installing any adjusting plate 12, and the rigidity of the pad 10 is equal to the rigidity of the base 11. Therefore, the initial rigidity (i.e., the minimum rigidity) of the pad 10 can be kept at a small value by decreasing the rigidity of the base 11 itself, and the adjustment range of the rigidity of the pad 10 is widened, thereby simulating more installation conditions as much as possible.

The mounting holes 1112 for mounting the adjustment plate 12 are provided on the side surfaces of the top plate 111 and the bottom plate 112 and extend in the second direction, and can mount and dismount the adjustment plate 12 in the lateral direction, facilitating the dismounting and mounting of the adjustment plate 12. As can be seen from fig. 3, in the test process, the test motor 20 is mounted on the pad 10, the pad 10 is fixed on the vibration table, and the dismounting and adjusting plate 12 is operated laterally, so as not to interfere with the motor 20 and the test table.

In one embodiment, as shown in fig. 1, the top plate 111 and the bottom plate 112 are U-shaped plates, and the mounting holes 1112 are disposed on side edges of the U-shaped plates. The U-shaped plate has good structural strength and strong lateral force resistance.

In one possible embodiment, the mounting holes 1112 are threaded holes. As shown in fig. 2, the upper and lower ends of the adjustment plate 12 are provided with through holes corresponding to the mounting holes 1112, respectively, and when the adjustment plate 12 is mounted, bolts 13 are inserted into the through holes of the adjustment plate 12 and screwed into the screw holes of the top plate 111 and the bottom plate 112. The installation mode is convenient and quick, and no extra fastener is needed.

In other embodiments, the mounting holes 1112 may also be smooth holes for use with nuts when mounting the adjustment plate 12. The life of the threaded hole is related to the number of uses, frequent disassembly and assembly can easily disable the threaded hole, and once the threaded hole is disabled, the entire base 11 is scrapped. The mode that the unthreaded hole is matched with the nut effectively avoids the situation.

In one implementation, as shown in fig. 1 and 2, the fixing hole 1111 is disposed at the center of the top plate 111, and the bottom plate 112 is symmetrical to the top plate 111. As shown in fig. 1, the top plate 111 and the bottom plate 112 are symmetrical, so that the top plate 111 and the bottom plate 112 can be made of the same material, on one hand, the design cost is saved, and on the other hand, the top plate 111 and the bottom plate 112 do not need to be distinguished when the base 11 is assembled, and the assembly efficiency is improved.

In one implementation manner, the left side plate 113 is symmetrical to the right side plate 114, the upper ends of the left side plate 113 and the right side plate 114 are respectively welded to the U-shaped inner wall of the top plate 111, and the lower ends of the left side plate 113 and the right side plate 114 are respectively welded to the U-shaped inner wall of the bottom plate 112.

The left side plate 113 and the right side plate 114 are symmetrical, so that the left side plate 113 and the right side plate 114 can adopt the same material, on one hand, the design cost is saved, and on the other hand, the left side plate 113 and the right side plate 114 are not required to be separated when the base 11 is assembled, and the assembly efficiency is improved.

The left side plate 113 and the right side plate 114 are respectively welded with the U-shaped inner walls of the top plate 111 and the bottom plate 112, and the connecting performance is good, so that the integrity of the base 11 is good.

In one embodiment, the left side plate 113 and the right side plate 114 are respectively provided with at least one lightening hole. The weight-reducing holes can further reduce the height of the base 11 itself, further expanding the rigidity adjustment range of the pad 10.

Specifically, in one implementation manner, two lightening holes are symmetrically arranged along a vertical central axis M 'N' of the side plate, and the lightening holes sequentially include a first oblique side CD, a second horizontal side DE, a third oblique side EF, a fourth vertical side FG, a fifth oblique side GH, a sixth horizontal side HI and a seventh oblique side IJ, wherein the fifth oblique side GH and the third oblique side EF are symmetrical with respect to a horizontal central axis MN of the side plate, the sixth horizontal side HI and the second horizontal side DE are symmetrical with respect to the horizontal central axis MN of the side plate, and the seventh oblique side IJ and the first oblique side CD are symmetrical with respect to the horizontal central axis MN of the side plate. As shown in fig. 1, the starting point (point C) of the first oblique side CD is disposed on the vertical side edge of the side plate, the included angle between the second horizontal side DE and the first oblique side CD is an obtuse angle, and the included angle between the third oblique side EF and the second horizontal side DE is an obtuse angle. The weight reducing hole of the embodiment of the utility model is in a polygonal shape as a whole, has uniform stress and reduces stress concentration. Further, a circular arc may be provided at each corner of the lightening hole for transition, thereby further reducing stress concentration.

In other embodiments, triangular, waist-shaped, circular, or other polygonal lightening holes may be provided.

In one possible embodiment, the stiffness adjustment assembly includes M thickness adjustment plates 12, M.gtoreq.2. The adjusting plates 12 having the same cross-sectional dimensions have different thicknesses and different rigidities. In the present embodiment, by providing the adjustment plate 12 having various cross-sectional dimensions and different thicknesses, the rigidity adjustment range of the pad 10 can be greatly enlarged. Taking the cushion block 10 of 6 adjustment plates as an example, wherein the thickness of 3I-type adjustment plates 121 is T1, the thickness of 3 II-type adjustment plates 122 is T2, 28 cushion block rigidities can be obtained by arranging and combining two types of adjustment plates 121, 121 mounted on the base 11. This greatly expands the stiffness adjustment range of the spacer 10 compared to 6 adjustment plates of the same thickness in table 1.

Configuration of cushion block	Rigidity of
		Base seat	R1
base+1I-shaped adjusting plate	R2
		Base+1 block II type adjusting plate	R3
base+2I-shaped adjusting plate	R4
		Base +2 block II type adjusting plate	R5
base+1I-type adjusting plate+1 II-type adjusting plate	R6
		base+3I-shaped adjusting plates	R7
Base+3 II type adjusting plates	R8
		base+1I-type adjusting plate+2 II-type adjusting plates	R9
base+2I-type adjusting plates+1 II-type adjusting plates	R10
		……	R28

TABLE 2

Further, in one embodiment, a cushion pad is disposed on the top surface of the base 11. The time of vibration test is long, intensity is big, and motor 20's lower margin and cushion 10 are metal material, can lead to the fact wearing and tearing to motor 20's lower margin in the test process, and the blotter can avoid damaging motor 20's lower margin in the vibration test process. The cushion pad can be made of EVA, EPE, fiber and other nonmetallic materials.

The foregoing is merely a preferred embodiment of the present utility model, and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A cushion block with adjustable rigidity, comprising:

the base (11), the top surface of the base (11) is provided with a fixing hole (1111);

the rigidity adjusting assembly is configured at the outer edge of the base (11), the rigidity adjusting assembly comprises N strip-shaped adjusting plates (12), the first ends of the adjusting plates (12) are detachably connected with the top surface of the base (11), the second ends of the adjusting plates (12) are detachably connected with the bottom surface of the base (11), and N is more than or equal to 3.

2. The cushion block with adjustable rigidity according to claim 1, wherein the base (11) comprises:

a top plate (111), wherein the fixing hole (1111) is positioned on the top plate (111), and the fixing hole (1111) is a light hole;

a bottom plate (112);

the upper end of the left side plate (113) is fixedly connected with the 1A end of the top plate (111), and the lower end of the left side plate (113) is fixedly connected with the 1A end of the bottom plate (112);

the upper end of the right side plate (114) is fixedly connected with the 1B end of the top plate (111), and the lower end of the right side plate (114) is fixedly connected with the 1B end of the bottom plate (112);

the device comprises a top plate (111), a bottom plate (112) and an adjusting plate (12), wherein a plurality of mounting holes (1112) are respectively formed in the 2A end side surface and the 2B end side surface of the top plate (111), a plurality of mounting holes (1112) are respectively formed in the 2A end side surface and the 2B end side surface of the bottom plate (112), the mounting holes (1112) are used for mounting the adjusting plate (12), and the mounting holes (1112) extend along the second direction.

3. The cushion block with adjustable rigidity according to claim 2, wherein the top plate (111) and the bottom plate (112) are U-shaped plates, and the mounting holes (1112) are provided on side edges of the U-shaped plates.

4. A rigidity-adjustable spacer block according to claim 3, wherein the mounting hole (1112) is a threaded hole; or, the mounting hole (1112) is a light hole.

5. The cushion block with adjustable rigidity according to claim 4, characterized in that the fixing hole (1111) is provided in the center of the top plate (111), and the bottom plate (112) is symmetrical to the top plate (111).

6. The cushion block with adjustable rigidity according to claim 5, wherein the left side plate (113) is symmetrical to the right side plate (114), the upper ends of the left side plate (113) and the right side plate (114) are respectively welded with the U-shaped inner wall of the top plate (111), and the lower ends of the left side plate (113) and the right side plate (114) are respectively welded with the U-shaped inner wall of the bottom plate (112).

7. The cushion block (10) with adjustable rigidity according to claim 6, wherein the left side plate (113) and the right side plate (114) are respectively provided with at least one lightening hole.

8. The adjustable stiffness spacer (10) of claim 7 wherein two of said lightening holes are symmetrically disposed along a vertical central axis of the side plate, said lightening holes comprising in sequence:

a first oblique side (CD) whose start end is provided on the vertical side of the side plate;

-a second horizontal edge (DE), the angle of the second horizontal edge (DE) with the first oblique edge (CD) being an obtuse angle;

-a third oblique Edge (EF), the angle between the third oblique Edge (EF) and the second horizontal edge (DE) being an obtuse angle;

a fourth vertical side (FG);

a fifth oblique side (GH) symmetrical to the third oblique side (EF) with respect to the horizontal central axis (MN) of the side plate;

-a sixth horizontal edge (HI) symmetrical to said second horizontal edge (DE) with respect to a horizontal central axis (MN) of the side plate;

-a seventh oblique edge (IJ) symmetrical to said first oblique edge (CD) with respect to a horizontal central axis (MN) of the side plate.

9. The adjustable stiffness spacer of claim 1 wherein the stiffness adjustment assembly includes M thickness adjustment plates (12), M being ≡2.

10. A cushion block with adjustable rigidity according to claim 1, characterized in that the top surface of the base (11) is provided with a cushion pad.