Transformer shell vibration test platform

Abstract

A transformer shell vibration test platform disclosed by the present invention comprises a bottom plate, one side of the bottom plate is provided with an object placing table, a plurality of damper springs are arranged between the bottom plate and the object placing table, two ends of each damper spring are fixedly connected with the bottom plate and the object placing table respectively, and different positions of a transformer shell are clamped by using a control frame, so that the vibration of the transformer shell can be tested. The vibration condition of the transformer shell is detected and fed back to the vibration motor, so that the vibration motor can select more reasonable vibration parameters, and the vibration test of the transformer shell is ensured to be more persuasive; when the control frame and the protection frame are hoisted and moved, the transformer shell can be supported through the bearing plate, so that the movement of the large transformer shell is facilitated, and the test efficiency is improved; after the test of the vibration platform, the defect of the transformer shell can be exposed, the exposed defect is only the amplification of the existing defect, and no new defect is generated due to excessive vibration.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer production, and in particular relates to a transformer housing vibration test platform. Background Art

[0002] After the transformer shell is welded and painted, a vibration platform is used to simulate the vibration that may be generated during its normal operation, so that possible defects in the transformer shell can be exposed in advance. The existing vibration test platform cannot design a reasonable vibration frequency and vibration time for it according to the size of the transformer shell. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention aims to provide a transformer housing vibration test platform.

[0004] The technical solution adopted by the present invention is:

[0005] A transformer housing vibration test platform comprises a base plate, a storage platform is provided on one side of the base plate, a plurality of damping springs are provided between the base plate and the storage platform, two ends of the damping springs are respectively fixedly connected to the base plate and the storage platform, a plurality of vibration motors are provided on a side of the storage platform close to the base plate, the vibration motors are fixedly connected to the storage platform, an eccentric block is fixedly provided on the output shaft of the vibration motor; a control frame and a protection frame are provided on a side of the storage platform away from the base plate, the control frame is used to clamp the transformer housing.

[0006] As a preferred embodiment of the present invention, a plurality of telescopic cylinders are provided between the protection frame and the control frame, and a cylinder barrel and a piston rod of each telescopic cylinder are fixedly connected to the control frame and the protection frame respectively.

[0007] As a preferred embodiment of the present invention, the control frame is in the shape of a rectangular frame, and a first sliding rod is respectively provided on two short sides of the control frame, and a group of second sliding rods are respectively provided on two long sides of the control frame; the first sliding rod and the second sliding rod are respectively provided with a bearing plate at one end located in the control frame, and the bearing plate is used to support the transformer housing.

[0008] As a preferred embodiment of the present invention, the first sliding rod passes through the control frame, and the first sliding rod is slidably connected to the control frame, and the second sliding rod passes through the control frame, and the second sliding rod is slidably connected to the control frame.

[0009] As a preferred embodiment of the present invention, a long transfer plate is fixedly provided at one end of the two groups of the second sliding rods close to each other, and the supporting plates are fixedly connected to the two long transfer plates respectively; the long transfer plates are used to clamp the transformer housing.

[0010] As a preferred embodiment of the present invention, a short transfer plate is fixedly provided at one end of the two first sliding rods close to each other, and the bearing plate is fixedly connected to the two short transfer plates respectively; the short transfer plates are used to position the transformer housing.

[0011] As a preferred embodiment of the present invention, a plurality of hanging ears are provided at one end of the protection frame away from the control frame, the hanging ears are fixedly connected to the protection frame, and the protection frame is lifted and moved by a bridge crane via steel cables and the hanging ears.

[0012] As a preferred embodiment of the present invention, a mounting rod is fixedly provided on each group of the second sliding rods, and the mounting rod is located on the outside of the control frame. A second transmission rod is provided on one side of each of the mounting rods, and one end of each of the second transmission rods is rotatably connected to the mounting rod, and one end of each of the second transmission rods away from the mounting rod is rotatably connected to the outer wall of the protective frame.

[0013] As a preferred embodiment of the present invention, a first transmission rod is provided at one end of each first sliding rod located outside the control frame, and both ends of each first transmission rod are rotatably connected to one end of the first sliding rod and the outer side wall of the protection frame respectively.

[0014] As a preferred embodiment of the present invention, a vibration sensor is provided on the control frame.

[0015] The beneficial effects of the present invention are as follows: as a transformer housing vibration test platform, the present invention utilizes a control frame to clamp different positions of the transformer housing, detects the vibration conditions of the transformer housing and feeds back to the vibration motor, so that the vibration motor can select more reasonable vibration parameters, ensuring that the vibration test of the transformer housing is more convincing; and the control frame and the protection frame of the present invention can lift the transformer housing through the bearing plate when being lifted and moved, so as to facilitate the movement of large transformer housings and improve the test efficiency; after the vibration platform test, it is ensured that the defects of the transformer housing can be revealed, and the revealed defects are only the amplification of the existing defects, and no new defects will be generated due to excessive vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 The present invention Figure 1 A schematic diagram of a top view structure;

[0019] Figure 3 The present invention Figure 2 Schematic diagram of the AA direction structure;

[0020] Figure 4 The present invention Figure 1 Schematic diagram of the structure after the storage table is hidden;

[0021] Figure 5 The present invention Figure 4 Schematic diagram of the related structure of the protection frame and control frame. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0024] Combine the following Figure 1-5 The specific embodiment of the present invention is described. A transformer housing vibration test platform includes a bottom plate 11, a storage platform 12 is provided on one side of the bottom plate 11, a plurality of damping springs 17 are provided between the bottom plate 11 and the storage platform 12, and the two ends of the damping springs 17 are respectively fixedly connected to the bottom plate 11 and the storage platform 12, and a plurality of vibration motors 20 are provided on the side of the storage platform 12 close to the bottom plate 11, and the vibration motors 20 are fixedly connected to the storage platform 12, and an eccentric block is fixedly provided on the output shaft of the vibration motor 20; a control frame 15 and a protection frame 14 are provided on the side of the storage platform 12 away from the bottom plate 11, and the control frame 15 is used to clamp the transformer housing 13. When the eccentric block rotates, the vibration motor 20 vibrates, and then transmits the vibration to the storage platform 12. The vibration motor 20 is installed on the bottom and side of the storage platform 12, so that the storage platform 12 can form multi-directional vibration.

[0025] Advantageously, a plurality of telescopic cylinders 26 are provided between the protection frame 14 and the control frame 15, and the cylinder barrel and piston rod of each telescopic cylinder 26 are respectively fixedly connected to the control frame 15 and the protection frame 14. When the telescopic cylinder 26 is in a working state, the length change of its piston rod can be actively controlled, and when the telescopic cylinder 26 is in a floating state, its piston rod can be freely extended and retracted relative to the telescopic cylinder by external force.

[0026] Advantageously, the control frame 15 is in a rectangular frame shape, and each of the two short sides of the control frame 15 is provided with a first sliding rod 22, and each of the two long sides of the control frame 15 is provided with a set of second sliding rods 23; each of the first sliding rod 22 and the second sliding rod 23 located in the control frame 15 has a bearing plate 16 at one end thereof, and the bearing plate 16 is used to hold up the transformer housing 13. When the bearing plate 16 slides to the bottom of the transformer housing 13, it can hold up the transformer housing 13.

[0027] Advantageously, the first sliding rod 22 passes through the control frame 15, and is slidably connected to the control frame 15. The second sliding rod 23 passes through the control frame 15, and is slidably connected to the control frame 15. By changing the distance between the control frame 15 and the protection frame 14, the position of the sliding rod 23 is changed, so as to achieve the purpose of positioning the transformer housing 13.

[0028] Advantageously, a long transmission plate 18 is fixedly disposed at one end of the two sets of the second sliding rods 23 close to each other, and the bearing plates 16 are fixedly connected to the two long transmission plates 18 respectively; the long transmission plates 18 are used to clamp the transformer housing 13. The side surface of the transformer housing 13 is not absolutely flat, so the contact area between the long transmission plates 18 and the side surface of the transformer housing 13 is large, which can ensure the effective transmission of vibration parameters.

[0029] Advantageously, a short transfer plate 27 is fixedly provided at one end of the two first sliding rods 22 close to each other, and the bearing plate 16 is fixedly connected to the two short transfer plates 27 respectively; the short transfer plates 27 are used to position the transformer housing 13. The main function of the short transfer plates 27 is to center the transformer housing 13, ensure that the two ends of the long transfer plate 18 do not exceed the range of the side of the transformer housing 13, and further increase the effective release area between the long transfer plate 18 and the side of the transformer housing 13.

[0030] Advantageously, a plurality of lugs 19 are provided at one end of the protection frame 14 away from the control frame 15, and the lugs 19 are fixedly connected to the protection frame 14, and the protection frame 14 is lifted and moved by a bridge crane through a steel cable and the lugs 19. The steel cable can be quickly connected to the lug 19 through a hook, and the steel cable has a certain length. When the steel cable ensures that the protection frame 14 is suspended in the air, the influence of the vibration thereof can be basically ignored.

[0031] Advantageously, a mounting rod 25 is fixedly provided on each group of the second sliding rods 23, and the mounting rod 25 is located on the outside of the control frame 15. A second transmission rod 24 is provided on one side of each of the mounting rods 25, and one end of each of the second transmission rods 24 is rotatably connected to the mounting rod 25, and one end of each of the second transmission rods 24 away from the mounting rod 25 is rotatably connected to the outer wall of the protective frame 14.

[0032] Advantageously, a first transmission rod 21 is provided at one end of each first sliding rod 22 located outside the control frame 15 , and both ends of each first transmission rod 21 are rotatably connected to one end of the first sliding rod 22 and the outer side wall of the protection frame 14 , respectively.

[0033] Advantageously, a vibration sensor is provided on the control frame 15. The vibration sensor can detect and record the vibration parameters of the control 15, thereby reflecting the vibration parameters of the transformer housing 13 at the current position; since the vibration source of the transformer housing 13 comes from the vibration motor 20 at the bottom, the vibration parameters measured are different for different clamping heights, and for transformer housings of different weights and sizes, the working parameters of the vibration motor 20 can be adjusted according to the needs through the parameters fed back by the vibration sensor.

[0034] Working principle of the present invention:

[0035] In the initial state, the transformer housing 13 is placed on a pallet, the size of which is smaller than the size of the bottom surface of the transformer housing 13; the telescopic cylinder 26 is in working state, its piston rod is retracted, keeping the control frame 15 and the protection frame 14 close, and the long transfer plate 18 and the short transfer plate 27 are both close to the inner wall of the control frame 15.

[0036] Use a bridge crane to lift the protection frame 14 and the control frame 15 to the top of the transformer housing 13, and then slowly drop them so that the transformer housing 13 is framed by the protection frame 14 and the control frame 15;

[0037] When the control frame 15 touches the ground, the bridge crane stops running, and the telescopic cylinder 26 becomes a floating state. At this time, the cylinder barrel and piston rod of the telescopic cylinder 26 can slide freely under the external force, and the bridge crane continues to operate to lift the protection frame 14. At this time, the protection frame 14 and the control frame 15 move relative to each other. In this process, under the action of the first transmission rod 21 and the second transmission rod 24, the first sliding rod 22 and the second sliding rod 23 slide, and the long transmission plate 18 and the short transmission plate 27 gather toward the middle, driving the four bearing plates 16 to move together, and the four bearing plates 16 move to the bottom surface of the transformer housing 13;

[0038] The protection frame 14 continues to be lifted, and when the extension of the telescopic cylinder 26 reaches the maximum, the control frame 15 is lifted together with the protection frame 14 , and the bearing plate 16 lifts the transformer housing 13 . At this time, the transformer housing 13 can move together with the protection frame 14 and the control frame 15 .

[0039] When the transformer housing 13 moves to the top of the storage platform 12, the bridge crane controls the transformer housing 13 to fall, so that the transformer housing 13 is placed on the storage platform 12; the lower end of the control frame 15 first contacts the storage platform 12, and the control frame 15 cannot continue to move. The protection frame 14 approaches the control frame 15 under the action of gravity, and the extension of the telescopic cylinder 26 is gradually shortened to the minimum in a floating state; in this process, under the action of the first transmission rod 21 and the second transmission rod 24, the first sliding rod 22 and the second sliding rod 23 slide, and the long transfer plate 18 and the short transfer plate 27 drive the bearing plate 16 to move around, until the bearing plate 16 is separated from the bottom of the transformer housing 13, and the transformer housing 13 falls on the storage platform 12.

[0040] At this time, the height of the first detection is set. First, the telescopic cylinder 26 is controlled to become in working state, so that its piston rod is in a retracted state. In this state, the long transfer plate 18 and the short transfer plate 27 do not contact the side wall of the transformer housing 13. The bridge crane is controlled to lift the protection frame 14 to the specified height, and then the piston rod of the telescopic cylinder 26 is controlled to extend. During the extension of the piston rod of the telescopic cylinder 26, the control frame 15 will move downward. At the same time, under the action of the first transmission rod 21 and the second transmission rod 24, the first sliding rod 22 and the second sliding rod 23 slide, and the short transfer plate 27 and the long transfer plate 18 center and clamp the transformer housing 13.

[0041] The bridge crane maintains the height of the protection frame 14 and starts the vibration motor 20. The eccentric block on the output shaft of the vibration motor 20 causes it to vibrate. With the cooperation of the damping spring 17, the storage table 12 vibrates and transmits the vibration to the transformer housing 13 and the control frame 15. The vibration sensor on the control frame 15 converts the vibration signal into an electrical signal, records the vibration time, vibration frequency, vibration amplitude and other information of the transformer housing 13, and feeds back to the vibration motor 20, thereby controlling the speed and start and stop of the vibration motor 20. After the vibration is finished, the surface defects of the transformer housing 13 and the cracking of the weld are observed.

[0042] The equipment is then stopped and the height of the second test is set. The principle is the same as above. After loosening the transformer housing 13, the bridge crane is controlled to lift the protection frame 14 to another specified height. After clamping the transformer housing 13, the vibration motor 20 is turned on to make the transformer housing 13 vibrate.

[0043] By repeatedly detecting the vibration information of different positions of the transformer housing 13, comparing and integrating them, the reasonable vibration of the transformer housing 13 is controlled to simulate the actual use environment, making the detection result more convincing; different vibration parameters are designed for transformer housings 13 of different specifications to ensure that the defects of the transformer housing 13 can be revealed, and the revealed defects are only the amplification of the existing defects, and new defects will not be generated due to excessive vibration.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims of this application, they should all fall within the protection scope of the present invention.

Claims

1. A transformer housing vibration test platform, characterized in that: It includes a base plate, a storage table is provided on one side of the base plate, a plurality of damping springs are provided between the base plate and the storage table, two ends of the damping springs are respectively fixedly connected to the base plate and the storage table, a plurality of vibration motors are provided on a side of the storage table close to the base plate, the vibration motors are fixedly connected to the storage table, an eccentric block is fixedly provided on the output shaft of the vibration motor; a control frame and a protection frame are provided on a side of the storage table away from the base plate, and the control frame is used to clamp the transformer housing.

2. A transformer housing vibration test platform according to claim 1, characterized in that: A plurality of telescopic cylinders are arranged between the protection frame and the control frame, and a cylinder barrel and a piston rod of each telescopic cylinder are fixedly connected to the control frame and the protection frame respectively.

3. A transformer housing vibration test platform according to claim 1, characterized in that: The control frame is in the shape of a rectangular frame, and a first sliding rod is respectively provided on two short sides of the control frame, and a group of second sliding rods are respectively provided on two long sides of the control frame; a bearing plate is respectively provided on one end of the first sliding rod and the second sliding rod located in the control frame, and the bearing plate is used to support the transformer housing.

4. A transformer housing vibration test platform according to claim 3, characterized in that: The first sliding rod passes through the control frame, and is slidably connected to the control frame. The second sliding rod passes through the control frame, and is slidably connected to the control frame.

5. A transformer housing vibration test platform according to claim 4, characterized in that: A long transfer plate is fixedly provided at one end of the two groups of the second sliding rods close to each other, and the bearing plates are fixedly connected to the two long transfer plates respectively; the long transfer plates are used to clamp the transformer housing.

6. A transformer housing vibration test platform according to claim 5, characterized in that: A short transfer plate is fixedly provided at one end of the two first sliding rods close to each other, and the bearing plates are fixedly connected to the two short transfer plates respectively; the short transfer plates are used to position the transformer housing.

7. The transformer housing vibration test platform according to claim 5, characterized in that: A plurality of hanging ears are arranged at one end of the protection frame away from the control frame. The hanging ears are fixedly connected to the protection frame. The protection frame is lifted and moved by a bridge crane through steel cables and the hanging ears.

8. The transformer housing vibration test platform according to claim 7, characterized in that: A mounting rod is fixedly provided on each group of the second sliding rods, and the mounting rod is located on the outside of the control frame. A second transmission rod is provided on one side of each of the mounting rods, and one end of each of the second transmission rods is rotatably connected to the mounting rod, and one end of each of the second transmission rods away from the mounting rod is rotatably connected to the outer wall of the protective frame.

9. A transformer housing vibration test platform according to claim 8, characterized in that: A first transmission rod is provided at one end of each first sliding rod located outside the control frame, and both ends of each first transmission rod are rotatably connected to one end of the first sliding rod and the outer side wall of the protection frame respectively.

10. The transformer housing vibration test platform according to claim 1, characterized in that: A vibration sensor is arranged on the control frame.

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