A frequency converter overhauling and transferring tool car for thermal power plants

Abstract

The utility model relates to tool car technical field, concretely relates to a power plant frequency converter overhauls transfer tool car, including the mobile trolley of installing the locating wheel, still include: the shearing type lifting frame is fixedly installed on the mobile trolley, and the top is installed with the seat through the roof board, mobile unit, including the platen that is installed on the seat and reciprocatingly moves along the horizontal plane direction through the drive assembly, a plurality of supporting rollers are rotatably installed to the platen outer end side, the platen is equipped with the stop unit for stopping the frequency converter body reaches fixed position, the present application can realize the movement of mobile unit along vertical and horizontal direction, flexible and applicable to the frequency converter transfer operation of different height positions, and the convenience is stronger, and the application range is wider, be equipped with the stop unit, can realize the direct efficient positioning of frequency converter and stop on the platen, the frequency converter transfer stability is conveniently guaranteed, avoids the risk that frequency converter slips and falls in the movement, and stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of tool cart technology, specifically to a tool cart for the maintenance and transportation of frequency converters in thermal power plants. Background Technology

[0002] As a key electrical device, the frequency converter in thermal power plants requires frequent equipment transfer during maintenance. Frequency converters are generally heavy and have high precision, which places strict requirements on the reliability, adaptability and on-site suitability of the transfer tools.

[0003] The current method of transporting frequency converters in thermal power plants mainly relies on handcarts, hydraulic lifting platforms, or simple supports, which has significant technical defects: First, the height adjustment capability is insufficient. Traditional tool carts are mostly designed with a fixed height, making it difficult to quickly adapt to the maintenance and transportation needs of frequency converters at different heights in different installation scenarios in thermal power plants. Second, the reliability of transportation is poor. Simple transportation carts lack a structure specifically designed to limit the movement of frequency converters. During the movement, frequency converters are prone to sliding or tilting due to uneven ground and steering inertia. This not only affects the transportation efficiency but may also cause the frequency converter to slip and fall, increasing maintenance costs.

[0004] In summary, existing transport tools cannot meet the requirements of high adaptability, stability, reliability, flexibility and efficiency during the maintenance of frequency converters in thermal power plants; therefore, we propose a transport vehicle for the maintenance of frequency converters in thermal power plants. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings mentioned in the background art and provide a maintenance and transportation tool vehicle for frequency converters in thermal power plants.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A utility cart for the maintenance and transport of frequency converters in thermal power plants includes a mobile trolley equipped with positioning wheels, and further includes: A scissor lift is fixedly installed on the mobile trolley, and a support is installed on the top via a top plate; The moving unit includes a pallet mounted on the support via a drive assembly and reciprocating along a horizontal plane. Multiple rollers are rotatably mounted on the outer end of the pallet to reduce the frictional resistance of the moving inverter body. The pallet is equipped with a stop unit for preventing the inverter body from reaching a fixed position.

[0007] Preferably, the pallet is provided with a rotating cavity; The stopping unit includes a baffle plate installed at the bottom of the rotating cavity to provide a fixed base, and a V-shaped plate rotatably installed in the rotating cavity, wherein the V-shaped plate has horizontal plates at both ends; A ring spring is installed between the horizontal plate and the baffle on either side, and the ring spring is used to provide a force for the V-shaped plate to deflect clockwise.

[0008] Preferably, the outer end side of the horizontal plate is provided with an anti-slip rubber strip; When the inverter body is transported to the fixed position of the pallet, the inverter body presses the clockwise deflected V-shaped plate to reset and rubs against the surface of the horizontal plate on the outer end to stop.

[0009] Preferably, the outer end side plate of the pallet is provided with an upward-sloping groove, and multiple rollers are rotatably installed along the groove.

[0010] Preferably, the support is provided with a groove for installing the positioning block and a plate groove for supporting the pallet; The drive assembly includes a movable block on which a screw and a guide slide are respectively threaded and slidably mounted, and the support plate is mounted on the movable block; A drive motor for coaxial connection between the output shaft and the screw is fixedly installed on the positioning block.

[0011] Preferably, the pallet is fixedly equipped with a clamping arm for holding the inverter body and keeping it stable during the transfer process.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This power plant inverter maintenance and transfer vehicle can move the mobile unit in both vertical and horizontal directions, making it flexible and suitable for inverter transfer operations at different heights. It is more convenient and has a wider range of applications. 2. Equipped with a stop unit, the inverter can be directly and efficiently positioned and stopped on the pallet, which helps to ensure the stability of the inverter during transportation and avoids the risk of the inverter slipping and falling during movement, ensuring stability and reliability. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings: Figure 1 This is one of the schematic diagrams of the overall structure of this utility model; Figure 2 This is the second schematic diagram of the overall structure of this utility model; Figure 3 This is the third schematic diagram of the overall structure of this utility model; Figure 4 This is an exploded view of the overall structure and installation relationship of this utility model; Figure 5This is a schematic diagram of the mobile unit of this utility model; Figure 6 This is a cross-sectional view of the mobile unit of this utility model.

[0014] The meanings of the labels in the diagram are as follows: 1. Mobile trolley; 2. Scissor lift frame; 3. Top plate; 4. Guardrail; 5. Support; 51. Slot; 52. Plate slot; 6. Drive assembly; 61. Moving block; 62. Screw; 63. Guide slide bar; 64. Drive motor; 7. Moving unit; 71. Pallet; 72. Roller; 73. Baffle; 74. V-shaped plate; 741. Horizontal plate; 75. Ring spring; 701. Shovel groove; 702. Rotating cavity; 8. Clamping arm; 9. Positioning block; 10. Inverter body. Detailed Implementation

[0015] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] Please see Figures 1-6 The present invention will describe the above technical solution in detail through the following embodiments: This embodiment of the inverter maintenance and transfer tool cart includes a mobile cart 1 equipped with positioning wheels. The mobile cart 1 adopts an existing flatbed mobile cart, which is convenient for movement and positioning. Specifically, in order to facilitate transfer operations in different height scenarios, this embodiment has a top plate 3 installed on the mobile cart 1 by a scissor lift frame 2. A C-shaped guardrail 4 is installed on the outer edge of the top plate 3, and the open end of the guardrail 4 is the inlet and outlet end for transferring the inverter body 10.

[0017] like Figures 1-4 In order to address the spatial gap between this application and the inverter body 10 to be transferred, this embodiment has a support 5 installed on the top plate 3, which has a plate groove 52 and a slot 51 distributed from top to bottom in an inverted convex shape, and a drive assembly 6 is installed in the slot 51.

[0018] Specifically, the drive assembly 6 includes a drive motor 64 fixedly mounted via a positioning block 9, and a screw 62 coaxially mounted on the output shaft. A guide slide rod 63 is horizontally fixedly mounted on the positioning block 9. A moving block 61 is threaded onto the screw 62 and slidably inserted into the guide slide rod 63. Based on the screw principle, the drive motor 64 can drive the screw 62 to rotate, thereby causing the moving block 61 to slide back and forth along the groove 51. Therefore, in this embodiment, the pallet 71 is fixedly mounted on the moving block 61 to realize the function of reciprocating along the horizontal plane to approach the inverter body 10 to be transferred.

[0019] To ensure a smoother operation of the inverter body 10, such as... Figure 5 , Figure 6 The structure shown has an upward-sloping groove 701 on the outer end of the pallet 71 of the moving unit 7. Rollers 72 are evenly distributed and rotatably mounted along the groove 701. The diameter of the rollers 72 on the outer edge is smaller, so that the inverter body 10 reduces the moving friction resistance and is pushed onto the pallet 71 along the rollers 72. However, it should be noted that in order to maintain the stability of the inverter body 10 on the pallet 71, this embodiment has a clamping arm 8 fixedly installed on the pallet 71 for clamping the inverter body 10. Therefore, there are requirements for the position of the inverter body 10 being transferred and pushed onto the pallet 71.

[0020] Therefore, as Figure 6 As shown in the structure, in order to position the inverter body 10 on the support plate 71, a rotating cavity 702 is provided on the support plate 71 for installing a stop unit; specifically, the stop unit includes a baffle 73 installed at the bottom of the rotating cavity 702, and a V-shaped plate 74 with horizontal plates 741 at both ends rotatably installed above the baffle 73, wherein... Figure 6 The surface of the right horizontal plate 741 is provided with rubber anti-slip strips; a ring spring 75 is installed between the left horizontal plate 741 and the baffle 73. The ring spring 75 is used to press the V-shaped plate 74 outward, so that it maintains the tendency to deflect clockwise; that is, when the inverter body 10 is transferred and pushed onto the pallet 71, it will first press the left side horizontal plate 741 to the horizontal. When it is horizontal, the rubber anti-slip strips on the surface of the right horizontal plate 741 press against the inverter body 10. The large frictional resistance makes it impossible for the inverter body 10 to move forward to achieve efficient positioning. At this time, the clamping arm 8 clamps and completes accurate positioning, and then pushes the tool cart to complete reliable transfer operation. The clamping arm 8 in this embodiment is an application of the existing clamping robot arm, so it will not be described in detail.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A maintenance and transfer tool cart for frequency converters in thermal power plants, comprising a mobile trolley (1) equipped with positioning wheels, characterized in that: Also includes: A scissor lift (2) is fixedly installed on the mobile trolley (1), and a support (5) is installed on the top through the top plate (3). The moving unit (7) includes a pallet (71) mounted on the support (5) by a drive assembly (6) and reciprocating along the horizontal plane. Multiple rollers (72) are rotatably mounted on the outer end of the pallet (71) to reduce the moving friction resistance of the inverter body (10). The pallet (71) is provided with a stop unit for preventing the inverter body (10) from reaching a fixed position.

2. The power plant frequency converter maintenance and transfer vehicle as described in claim 1, characterized in that: The pallet (71) is provided with a rotating cavity (702); The stopping unit includes a baffle (73) installed at the bottom of the rotating cavity (702) to provide a fixed base, and a V-shaped plate (74) rotatably installed in the rotating cavity (702), with horizontal plates (741) at both ends of the V-shaped plate (74). A ring spring (75) is installed between the horizontal plate (741) and the baffle (73) on either side, the ring spring (75) being used to provide a force for the V-shaped plate (74) to deflect clockwise.

3. The power plant frequency converter maintenance and transfer vehicle as described in claim 2, characterized in that: The outer end side of the horizontal plate (741) is provided with anti-slip rubber strips; When the inverter body (10) is transported to the fixed position of the pallet (71), the inverter body (10) presses the clockwise deflected V-shaped plate (74) to reset and rubs against the surface of the horizontal plate (741) on the outer end side to stop.

4. The power plant frequency converter maintenance and transfer vehicle as described in claim 1, characterized in that: The pallet (71) has an upsloping groove (701) on its outer side plate, and multiple rollers (72) are rotatably installed along the groove (701).

5. The power plant frequency converter maintenance and transfer vehicle as described in claim 1, characterized in that: The support (5) is provided with a groove (51) for installing the positioning block (9) and a plate groove (52) for supporting the pallet (71). The drive assembly (6) includes a movable block (61) on which a screw (62) and a guide slide (63) are respectively threaded and slidably mounted, and the pallet (71) is mounted on the movable block (61); A drive motor (64) for coaxially connecting the output shaft and the screw (62) is fixedly installed on the positioning block (9).

6. The power plant frequency converter maintenance and transfer vehicle as described in claim 1, characterized in that: The pallet (71) is fixedly equipped with a clamping arm (8) for holding the inverter body (10) and keeping the transfer process stable.

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