Linear motion limiting device used in converter transformer three-dimensional shock isolation device

Abstract

The invention relates to a linear motion limiting device used in a converter transformer three-dimensional shock isolation device, which comprises a track, a slide block, a spring and a gear rack transmission mechanism, and is characterized in that the track is used for providing a linear motion path; the sliding block is mounted in the track and is in sliding fit with the track; one end of the spring is fixed on the track, and the other end of the spring is fixedly connected to the sliding block; the gear and rack transmission mechanism comprises a rack pair composed of a gear and a rack, the gear is fixedly connected with the sliding block and is driven by the sliding block to move in the length direction of the rack, and the rack is fixed to the track in parallel in the length direction. According to the linear motion limiting device used in the converter transformer three-position shock isolation device, linear motion limiting is achieved, and a certain shock isolation effect can also be achieved.

Description

Technical Field

[0001] The invention belongs to the field of three-dimensional seismic isolation of converter transformers, and in particular relates to a linear motion limiting device used in a three-dimensional seismic isolation device of a converter transformer. Background Art

[0002] Earthquakes are the most destructive natural disasters on land, and have brought immeasurable losses to human society. In previous earthquake disasters, a large number of main transformer equipment were damaged, which directly caused huge economic losses and also brought serious secondary hazards such as fire and power outages. The main transformer equipment box is also connected to the heavy iron core and winding components through brittle insulating materials. Among them, the slender ceramic bushing is extremely sensitive to the low-frequency components in the earthquake. In order to ensure that it is not damaged by earthquakes, the seismic isolation support of the main transformer equipment not only needs good seismic isolation efficiency, but also needs to have good limiting capacity and self-resetting ability. In three-dimensional seismic isolation, some main transformer equipment also contains oblique ceramic bushings that are sensitive to vertical earthquake motion, which also puts forward higher requirements for vertical seismic isolation. Due to the eccentricity of the converter transformer, it will cause it to sway (overturn) during the vertical movement. Therefore, in the three-dimensional seismic isolation design, it is necessary to constrain the vertical movement of the converter transformer to avoid swaying during the vertical movement. The current three-dimensional seismic isolation design of converter transformers rarely considers this issue, so it is necessary to design a limit device to constrain its swing motion. Summary of the invention

[0003] The purpose of the present invention is to solve the problem of lack of vertical constraint on the converter transformer in the three-dimensional seismic isolation device of the converter transformer in the prior art.

[0004] The purpose of the present invention is to adopt the following technical solutions to achieve:

[0005] A linear motion limit device for use in a three-dimensional seismic isolation device for a converter transformer comprises: a track for providing a linear motion path; a slider installed in the track and slidingly fitted; a spring, one end of the spring being fixed to the track and the other end being fixedly connected to the slider; a rack and pinion transmission mechanism comprising a rack pair consisting of a gear and a rack, the gear being fixedly connected to the slider and moving along the length direction of the rack under the drive of the slider, and the rack being fixedly connected to the track in parallel along the length direction.

[0006] Furthermore, the track includes a frame and a guide rail; the guide rail is installed in the frame.

[0007] Furthermore, the frame includes a bottom plate, a side plate, and a top plate, and the side plate is connected and fixed to the bottom plate and the top plate;

[0008] One end of the spring is fixedly connected to the top surface of the bottom plate, and the other end is fixedly connected to the bottom surface of the slider;

[0009] The rack is fixed on the bottom plate.

[0010] Furthermore, the side panel includes a first side panel, a second side panel and a third side panel, and the first side panel and the second side panel are symmetrically and parallelly arranged.

[0011] Furthermore, the guide rail includes a first limiting groove and a second limiting groove, which are respectively fixed in parallel on the first side plate and the second side plate.

[0012] Furthermore, a first motion shaft support and a second motion shaft support are symmetrically provided on a side of the sliding block close to the rack, a motion shaft is provided between the first motion shaft support and the second motion shaft support, and the gear is sleeved on the motion shaft.

[0013] Furthermore, a shaft shoulder is provided on the motion shaft, and one side of the gear is limited by the shaft shoulder.

[0014] Furthermore, a shaft elastic retaining ring is installed on the moving shaft, and the other side of the gear is limited by the shaft elastic retaining ring.

[0015] Furthermore, the limiting device also includes a connecting column, which is symmetrically arranged on both sides of the rack, one end of which is fixed to the first side plate and the second side plate, and the other end is fixedly connected to the rack, and the connecting column is an even number, and the total number is not less than 6.

[0016] Furthermore, the limiting device also includes a buffer block, which is installed in the guide rail and is flush with the top of the guide rail.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer of the present invention comprises: a track, a slider, a spring and a gear rack transmission mechanism, wherein the track is used to provide a linear motion path; the slider is installed in the track and slidably fits; one end of the spring is fixed on the track, and the other end is fixedly connected to the slider; the gear rack transmission mechanism comprises a rack pair composed of a gear and a rack, wherein the gear is fixedly connected to the slider and moves along the length direction of the rack under the drive of the slider, and the rack is fixed to the track in parallel along the length direction. The linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer of the present invention, wherein the spring can well absorb a part of the energy generated by the earthquake and can play a vertical buffering role; the track ensures that the slider can only move along the specified linear direction, and restricts the movement in the other directions, so as to ensure that the equipment will not sway (overturn) under the action of vertical earthquake; the gear rack transmission mechanism can well transmit force and motion, and can not only ensure that the gear can move along the rack direction, but also transmit load force. Thus, as a whole, the limiting device can not only meet the linear motion limiting but also play a certain seismic isolation role.

[0019] The linear motion limiting device used in the three-dimensional isolation device for converter transformers of the present invention further comprises a buffer block, which plays a limiting and buffering role to limit the maximum displacement of the slider.

[0020] The linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer described in the present invention has a simple structure and is suitable for various application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The three-dimensional structure diagram of the linear motion limiter used in the three-dimensional seismic isolation device of the converter transformer of the present invention is shown in FIG.

[0022] Figure 2 It is a structural schematic diagram of the linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer of the present invention;

[0023] Figure 3 It is a top view of the linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer of the present invention;

[0024] Figure 4 It is a cross-sectional view of the linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer of the present invention;

[0025] Among them, 1. bottom plate; 2. side plate; 201. first side plate; 202. second side plate; 203. third side plate; 3. top plate; 401. first limiting groove; 402. second limiting groove; 5. slider; 6. spring; 7. gear; 8. rack; 901. first moving shaft support; 902. second moving shaft support; 10. moving shaft; 11. shaft shoulder; 12. elastic retaining ring for shaft; 13. connecting column; 14. buffer block. DETAILED DESCRIPTION

[0026] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0027] The embodiment of the present invention provides a linear motion limiting device for use in a three-dimensional seismic isolation device of a converter transformer, such as Figures 1 to 4 As shown, including:

[0028] A track, the track is used to provide a linear motion path;

[0029] A slider 5, the slider 5 is installed in the track and slidably fits;

[0030] A spring 6, one end of which is fixedly connected to the track, and the other end of which is fixedly connected to the slider 5; in this embodiment, the spring 6 is a cylindrical helical compression spring;

[0031] The gear rack transmission mechanism includes a rack pair consisting of a gear 7 and a rack 8. The gear 7 is fixedly connected to the slider 5 and moves along the length direction of the rack 8 driven by the slider 5. The rack 8 is fixed to the track in parallel along the length direction.

[0032] As a specific implementation of this embodiment, the track includes a frame and a guide rail; the guide rail is installed in the frame.

[0033] The frame includes a bottom plate 1, a side plate 2, and a top plate 3, wherein the side plate 2 is connected and fixed to the bottom plate 1 and the top plate 3;

[0034] One end of the spring 6 is fixedly connected to the top surface of the bottom plate 1, and the other end is fixedly connected to the bottom surface of the slider 5;

[0035] The rack 8 is fixed to the bottom plate 1 .

[0036] As a preferred implementation of this embodiment, the side panel 2 includes a first side panel 201 , a second side panel 202 and a third side panel 203 , and the first side panel 201 and the second side panel 202 are symmetrically arranged in parallel.

[0037] As a specific implementation of this embodiment, the guide rail includes a first limiting groove 401 and a second limiting groove 402, which are parallel to the first side plate 201 and the second side plate 202 respectively;

[0038] As a specific implementation of this embodiment, the slider 5 is symmetrically provided with a first motion shaft support 901 and a second motion shaft support 902 on one side close to the rack 8, a motion shaft 10 is provided between the first motion shaft support 901 and the second motion shaft support 902, and the gear 7 is sleeved on the motion shaft 10 and meshes with the rack 8. In this embodiment, the first motion shaft support 901 and the second motion shaft support 902 have central openings, and the motion shaft 11 is erected between the first motion shaft support 901 and the second motion shaft support 902 through the openings.

[0039] As a preferred implementation of this embodiment, a shoulder 11 is provided on the motion shaft 10 , and one side of the gear 7 is limited by the shoulder 11 .

[0040] A shaft circlip 12 is installed on the motion shaft 10, and the other side of the gear 7 is limited by the shaft circlip 12. The shaft shoulder 11 and the shaft circlip 12 are used to ensure that the gear will not be displaced on the motion shaft.

[0041] As a preferred implementation of this embodiment, the limiting device further includes a connecting column 13,

[0042] The connecting column 13 is symmetrically arranged on both sides of the rack 8, one end of which is fixed to the first side plate 201 and the second side plate 202, and the other end is fixedly connected to the rack 8. The connecting column 13 is used to fix the rack 8 to prevent relative displacement between it and the limiting device; the connecting column 13 is an even number, and the total number is not less than 6. In this embodiment, the connecting column 13 is 8.

[0043] As a preferred implementation of this embodiment, the limiting device further includes a buffer block 14 , which is installed in the guide rail and flush with the top of the guide rail, and is used to buffer the movement of the slider 5 .

[0044] Unless otherwise specified, the connection method between the components in this embodiment can be but is not limited to welding or bolt fixing.

[0045] The working principle of the linear motion limiting device used in the three-dimensional seismic isolation device for converter transformers described in this embodiment is as follows: when vertical vibration occurs, the track ensures that the slider 5 can only move linearly along the track direction, and limits the movement in other directions, thereby ensuring that the equipment will not sway (overturn) under the action of vertical earthquakes; the spring 6 can absorb part of the energy generated by the earthquake very well, and can play a vertical buffering role; the gear rack transmission mechanism can transmit force and movement very well, not only ensuring that the gear 7 can move along the direction of the rack 8, but also can transmit load force, thereby playing a vertical seismic isolation role together. At the same time, the buffer block 14 plays a limiting and buffering role, limiting the maximum displacement of the slider 5.

[0046] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the claims of the present invention to be approved.

Claims

1. A linear motion limiting device for a three-dimensional seismic isolation device of a converter transformer, characterized in that: include: A track, the track is used to provide a linear motion path; A slider (5), the slider (5) being mounted in the track and slidingly fitted; a spring (6), one end of the spring (6) being fixed on the track, and the other end of the spring (6) being fixedly connected to the slider (5); The gear rack transmission mechanism comprises a rack pair consisting of a gear (7) and a rack (8); the gear (7) is fixedly connected to the slider (5) and moves along the length direction of the rack (8) driven by the slider (5); the rack (8) is fixed to the track in parallel along the length direction.

2. The linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer according to claim 1 is characterized in that: The track comprises a frame and a guide rail; the guide rail is installed in the frame.

3. The linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer according to claim 2 is characterized in that: The frame comprises a bottom plate (1), a side plate (2), and a top plate (3); the side plate (2) is connected and fixed to the bottom plate (1) and the top plate (3); One end of the spring (6) is fixedly connected to the top surface of the bottom plate (1), and the other end is fixedly connected to the bottom surface of the slider (5); The rack (8) is fixed to the base plate (1).

4. The linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer according to claim 3 is characterized in that: The side plate (2) comprises a first side plate (201), a second side plate (202) and a third side plate (203), wherein the first side plate (201) and the second side plate (202) are symmetrically arranged in parallel.

5. The linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer according to claim 2 is characterized in that: The guide rail comprises a first limiting groove (401) and a second limiting groove (402), which are respectively fixed in parallel on the first side plate (201) and the second side plate (202).

6. The linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer according to claim 1 is characterized in that: A first moving shaft support (901) and a second moving shaft support (902) are symmetrically arranged on one side of the slider (5) close to the rack (8); a moving shaft (10) is arranged between the first moving shaft support (901) and the second moving shaft support (902); and the gear (7) is sleeved on the moving shaft (10) and meshes with the rack (8).

7. The linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer according to claim 6 is characterized in that: The motion shaft (10) is provided with a shaft shoulder (11), and one side of the gear (7) is limited by the shaft shoulder (11).

8. The linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer according to claim 6 is characterized in that: A shaft elastic retaining ring (12) is installed on the moving shaft (10), and the other side of the gear (7) is limited by the shaft elastic retaining ring (12).

9. The linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer according to claim 4 is characterized in that: It also includes a connecting column (13), which is symmetrically arranged on both sides of the rack (8), one end of which is fixed to the first side plate (201) and the second side plate (202), and the other end is fixedly connected to the rack (8), and the connecting column (13) is an even number, and the total number is not less than 6.

10. The linear motion limiting device used in the three-dimensional seismic isolation device of the converter transformer according to claim 2, characterized in that: It also comprises a buffer block (14), which is installed in the guide rail and is flush with the top of the guide rail.

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