Positioning structure for frequency converter maintenance

Abstract

The utility model provides a positioning structure for frequency converter maintenance, which belongs to the technical field of frequency converter maintenance tables and comprises a workbench, an embedding groove is arranged in the center of the upper surface of the workbench, a pin shaft is rotatably arranged at the bottom of the inner side of the embedding groove, a turntable is fixedly arranged on the pin shaft, and a positioning bolt is in threaded connection with the center of the outer side surface of the workbench. A bracket is mounted on the upper surface of the turntable; according to the utility model, through the arrangement of the turntable, when the frequency converter needing to be maintained is positioned, the frequency converter is placed on the turntable, the electric telescopic rod drives the positioning assembly to position the upper part, the left side and the right side of the frequency converter, the stability of the frequency converter during maintenance is ensured, and when the orientation of the frequency converter needs to be adjusted, the positioning bolt is loosened; the rotating disc is rotated to drive the frequency converter placed above the rotating disc to rotate, the back of the frequency converter can face a worker conveniently, then the positioning bolt is tightened, the positioning bolt is tightly attached to the rotating disc, and the effect of positioning the rotating disc is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of frequency converter repair benches, and in particular to a positioning structure for frequency converter repair. Background Technology

[0002] A frequency converter is a power control device that uses the switching action of power semiconductor devices to convert industrial frequency power into electrical energy of another frequency. The frequency converter adjusts the voltage and frequency of the output power supply by switching the internal IGBTs, and provides the required power voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. During the maintenance of the frequency converter, it is necessary to use a positioning structure to position the frequency converter to facilitate its disassembly and maintenance.

[0003] In the prior art, patent CN217703310U discloses a conveniently fixed operating table for repairing industrial control frequency converters. This conveniently fixed operating table for repairing industrial control frequency converters uses the rotation of the force support cylinder to rotate and adjust the industrial control frequency converter placed on top to a suitable direction for easy repair. Then, the force support cylinder is fixed by the engagement of the locking positioning cylinder and the gear plate. Subsequently, the pressing plate is pulled down by the electric telescopic rod, which causes the pressing positioning plate to move downward, and simultaneously pushes down the two inclined side slide plates. The inclined side slide plates use the difference in inclined displacement to push the pushing positioning blocks on both sides inward, so that the pressing positioning plate and the side wall pressing plates on both sides firmly press and fix the industrial control frequency converter in the left, right and up and down directions, thereby making it more convenient for technicians to repair industrial control frequency converters.

[0004] While this device facilitates fixing the inverter during maintenance, it is not feasible because maintenance requires disassembly of both the front and back of the inverter. Once fixed, the device cannot adjust the inverter's orientation. When workers need to disassemble or repair the inverter from the front or back, they must walk around to the back of the control panel, which is inconvenient. This is especially true when the control panel is against a wall; in such cases, the inverter must be dismounted, rotated to face the worker, and then repositioned for maintenance, impacting work efficiency. Therefore, a positioning structure for inverter maintenance is designed to solve these problems. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology and to propose a positioning structure for frequency converter maintenance.

[0006] The technical problem to be solved by this utility model is to provide a positioning structure for inverter maintenance, which solves the problem that the positioning structure of inverter maintenance workers in the prior art cannot adjust the orientation of the inverter after positioning, resulting in inconvenience when it is necessary to perform maintenance on the front and back of the inverter.

[0007] This utility model provides a positioning structure for inverter maintenance, including a workbench, a turntable, positioning bolts, a bracket, and an electric telescopic rod. An embedded groove is formed in the center of the upper surface of the workbench, and a pin is rotatably mounted on the bottom inner side of the embedded groove. The turntable is fixedly mounted on the pin. A positioning bolt is threadedly connected to the center of the outer surface of the workbench. A bracket is mounted on the upper surface of the turntable, and an electric telescopic rod is mounted in the center of the upper surface of the bracket. A positioning component is installed at the output end of the electric telescopic rod to facilitate positioning of the inverter above and to the sides.

[0008] Preferably, the diameter of the embedding groove is equal to the diameter of the turntable, and the horizontal height of the upper surface of the turntable is equal to the horizontal height of the upper surface of the worktable.

[0009] Preferably, the end of the positioning bolt extends through the embedded groove, and the end of the positioning bolt is provided with a frosted layer.

[0010] Preferably, the positioning assembly includes a pressure plate, collars, a fixing block, a lead screw, a first rotating wheel, an internal threaded ring, and a clamping plate. Collars are sleeved on both the left and right sides of the pressure plate. A fixing block is fixedly installed at the center of the outer surface of the pressure plate. A lead screw is rotatably mounted on the fixing block via a bearing. A first rotating wheel is fixedly installed at the left end of the lead screw. Internal threaded rings are fixedly installed on the outer surfaces of both collars. A clamping plate is fixedly installed at the bottom of the collars.

[0011] Preferably, the lead screw is opposite to the thread direction of the fixed block, and the two internal threaded rings are respectively threaded to the lead screws on the left and right sides of the fixed block.

[0012] Preferably, the clamping plate is in the shape of a right-angled trapezoid with a gradually decreasing thickness at the bottom.

[0013] Preferably, the clamping plate has multiple rectangular grooves on one side surface facing the center of the pressure plate, and a spring is fixedly installed in the rectangular groove, with a rubber strip fixedly installed at the other end of the spring.

[0014] Preferably, the rubber strip is in the shape of a right-angled trapezoid with a gradually decreasing thickness at the bottom. When the spring is in a naturally extended state, the bottom of the rubber strip is completely inside the rectangular groove, and the top of the rubber strip extends out of the rectangular groove. When the spring is in a compressed state, the rubber strip is completely embedded in the rectangular groove.

[0015] Preferably, a first bevel gear is fixedly disposed at the bottom of the pin shaft, and a drive assembly for driving the pin shaft to rotate is installed below the worktable. The drive assembly includes a mounting block, a transmission rod, a second rotating wheel, and a second bevel gear. The mounting block is fixedly disposed on the outer side of the bottom surface of the worktable. A transmission rod is rotatably disposed on the mounting block via a bearing. A second rotating wheel is fixedly disposed at the outer end of the transmission rod, and a second bevel gear is fixedly disposed at the inner end of the transmission rod.

[0016] Preferably, the first bevel gear and the second bevel gear mesh with each other.

[0017] Compared with the prior art, this utility model has at least the following beneficial effects:

[0018] 1. This utility model features a turntable. When locating a frequency converter requiring maintenance, the converter is placed on the turntable, and the electric telescopic rod drives the positioning component to position the top and left and right sides of the converter, ensuring the stability of the converter during maintenance. When the orientation of the frequency converter needs to be adjusted, the positioning bolts are loosened, the turntable is rotated, and the turntable rotates the frequency converter placed on it, making it easy for the back of the frequency converter to face the operator. Then, the positioning bolts are tightened, and the positioning bolts are tightly attached to the turntable, achieving the effect of positioning the turntable.

[0019] 2. This utility model, by incorporating a positioning component, allows for the positioning of a frequency converter requiring maintenance. Based on the converter's width, the first rotating wheel rotates, causing the lead screw to rotate. The lead screw then moves two internal threaded rings in opposite directions, ensuring the distance between the two clamping plates equals the converter's width. The converter is then placed in the center of the turntable's upper surface, positioned between the two clamping plates. The electric telescopic rod is then activated, causing the pressure plate to move downwards. The pressure plate presses and fixes the top of the frequency converter, while the two clamping plates clamp and fix the left and right sides, ensuring stability during converter maintenance.

[0020] 3. This utility model, by providing a rubber strip, ensures that as the clamping plates on the positioning assembly move downwards, the distance between the two clamping plates is equal to the width of the inverter to be repaired. The inverter will squeeze the rubber strip, causing the rubber strip to be completely embedded in the rectangular groove. At this time, the spring is in a compressed state, and the elastic force of the spring makes the rubber strip stick tightly to the left and right sides of the inverter to be repaired, increasing the friction between the clamping plates and the inverter to be repaired, and further ensuring the stability during inverter repair.

[0021] 4. This utility model is equipped with a drive component. When it is necessary to rotate the turntable to adjust the orientation of the frequency converter that needs to be repaired, the second rotating wheel is rotated. The second rotating wheel drives the pin shaft to rotate, which in turn drives the second bevel gear to rotate. The second bevel gear drives the first bevel gear and the pin shaft to rotate, thereby achieving the effect of rotating the turntable. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model.

[0024] Figure 2 This is a three-dimensional structural diagram of the positioning component of this utility model.

[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of the clamping plate of this utility model.

[0026] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A.

[0027] Figure 5 This is a schematic diagram of the cross-sectional structure of the workbench of this utility model.

[0028] [Figure Labels]

[0029] 1. Workbench; 101. Embedded slot; 2. Turntable; 201. Pin; 202. First bevel gear; 3. Positioning bolt; 4. Bracket; 5. Electric telescopic rod; 6. Pressure plate; 601. Collar; 602. Fixing block; 603. Lead screw; 604. First rotating wheel; 605. Internal threaded ring; 606. Clamping plate; 6061. Rectangular groove; 6062. Spring; 6063. Rubber strip; 7. Mounting block; 701. Transmission rod; 702. Second rotating wheel; 703. Second bevel gear. Detailed Implementation

[0030] Example:

[0031] like Figures 1-5As shown, an embodiment of this utility model provides a positioning structure for inverter maintenance, including a workbench 1, a turntable 2, a positioning bolt 3, a bracket 4, and an electric telescopic rod 5. An embedded groove 101 is provided in the center of the upper surface of the workbench 1. A pin 201 is rotatably arranged at the bottom of the inner side of the embedded groove 101. The turntable 2 is fixedly arranged on the pin 201. The positioning bolt 3 is threadedly connected to the center of the outer surface of the workbench 1. The bracket 4 is installed on the upper surface of the turntable 2. The electric telescopic rod 5 is installed in the center of the upper surface of the bracket 4. The output end of the electric telescopic rod 5 is equipped with a positioning component that facilitates positioning the top and sides of the inverter.

[0032] In this embodiment, the diameter of the embedded groove 101 is equal to the diameter of the turntable 2, and the horizontal height of the upper surface of the turntable 2 is equal to the horizontal height of the upper surface of the worktable 1, ensuring the flatness of the upper surface of the turntable 2 and the worktable 1.

[0033] In this embodiment, the end of the positioning bolt 3 passes through the embedded groove 101, and the end of the positioning bolt 3 is provided with a frosted layer to increase the friction when the positioning bolt 3 contacts the turntable 2, thereby ensuring the stability of the positioning of the turntable 2.

[0034] With the turntable 2 in place, when locating a frequency converter that needs maintenance, the frequency converter is placed on the turntable 2, and the electric telescopic rod 5 drives the positioning component to position the top and left and right sides of the frequency converter, ensuring the stability of the frequency converter during maintenance. When it is necessary to adjust the orientation of the frequency converter, the positioning bolts 3 are loosened, the turntable 2 is rotated, and the turntable 2 drives the frequency converter placed on it to rotate, so that the back of the frequency converter faces the staff. Then, the positioning bolts 3 are tightened, and the positioning bolts 3 are tightly attached to the turntable 2, achieving the effect of positioning the turntable 2.

[0035] In this embodiment, the positioning assembly includes a pressure plate 6, collars 601, a fixing block 602, a lead screw 603, a first rotating wheel 604, an internal threaded ring 605, and a clamping plate 606. Collars 601 are sleeved on both the left and right sides of the pressure plate 6. A fixing block 602 is fixedly installed in the center of the outer surface of the pressure plate 6. A lead screw 603 is rotatably mounted on the fixing block 602 via a bearing. A first rotating wheel 604 is fixedly installed at the left end of the lead screw 603. An internal threaded ring 605 is fixedly installed on the outer surface of both collars 601. A clamping plate 606 is fixedly installed at the bottom of the collars 601.

[0036] In this embodiment, the lead screw 603 is in the opposite direction to the thread of the fixing block 602, and the two internal thread rings 605 are respectively threaded to the lead screw 603 on the left and right sides of the fixing block 602.

[0037] In this embodiment, the clamping plate 606 is a right-angled trapezoid with a gradually decreasing thickness at the bottom. When the inverter placed on the turntable 2 shifts left or right, the clamping plate 606 moves downward. The inclined surface on the clamping plate 606 can push the inverter to move left or right, thereby correcting the offset inverter and ensuring that the inverter is between the two clamping plates 606.

[0038] By incorporating a positioning component, when locating the inverter requiring maintenance, the first rotating wheel 604 is rotated according to the width of the inverter. The first rotating wheel 604 drives the lead screw 603 to rotate, and the lead screw 603 drives the two internal threaded rings 605 to move in opposite directions along the lead screw 603, so that the distance between the two clamping plates 606 is equal to the width of the inverter. The inverter is then placed in the center of the upper surface of the turntable 2, so that the inverter is positioned between the two clamping plates 606. Then, the electric telescopic rod 5 is activated, which drives the pressure plate 6 to move downward. The pressure plate 6 presses and fixes the top of the inverter, while the two clamping plates 606 clamp and fix the left and right sides of the inverter, ensuring the stability of the inverter during maintenance.

[0039] In this embodiment, a plurality of rectangular grooves 6061 are provided above one side surface of the clamping plate 606 facing the center of the pressure plate 6. A spring 6062 is fixedly installed in the rectangular groove 6061, and a rubber strip 6063 is fixedly installed at the other end of the spring 6062.

[0040] In this embodiment, the rubber strip 6063 is a right-angled trapezoid with a gradually decreasing thickness at the bottom. When the spring 6062 is in a naturally extended state, the bottom of the rubber strip 6063 is completely inside the rectangular groove 6061, and the top of the rubber strip 6063 extends out of the rectangular groove 6061. When the spring 6062 is in a compressed state, the rubber strip 6063 is completely embedded in the rectangular groove 6061.

[0041] With the rubber strip 6063 installed, as the clamping plate 606 on the positioning assembly moves downward, the inverter will squeeze the rubber strip 6063 because the distance between the two clamping plates 606 is equal to the width of the inverter that needs to be repaired. This causes the rubber strip 6063 to be completely embedded in the rectangular groove 6061. At this time, the spring 6062 is in a compressed state. The elastic force of the spring 6062 makes the rubber strip 6063 stick tightly to the left and right sides of the inverter that needs to be repaired, increasing the friction between the clamping plate 606 and the inverter that needs to be repaired, and further ensuring the stability during inverter repair.

[0042] In this embodiment, a first bevel gear 202 is fixedly installed at the bottom of the pin 201, and a drive assembly for driving the pin 201 to rotate is installed below the worktable 1. The drive assembly includes a mounting block 7, a transmission rod 701, a second rotating wheel 702, and a second bevel gear 703. The mounting block 7 is fixedly installed on the outer side of the bottom surface of the worktable 1. The transmission rod 701 is rotatably mounted on the mounting block 7 via a bearing. The second rotating wheel 702 is fixedly installed at the outer end of the transmission rod 701, and the second bevel gear 703 is fixedly installed at the inner end of the transmission rod 701.

[0043] In this embodiment, the first bevel gear 202 and the second bevel gear 703 mesh with each other, which facilitates the second bevel gear 703 to drive the first bevel gear 202 and the pin 201 to rotate, thereby achieving the effect of driving the turntable 2 to rotate.

[0044] By providing a drive assembly, when it is necessary to rotate the turntable 2 to adjust the orientation of the inverter that needs maintenance, the second rotating wheel 702 is rotated. The second rotating wheel 702 drives the pin shaft 201 to rotate, which in turn drives the second bevel gear 703 to rotate. The second bevel gear 703 then drives the first bevel gear 202 and the pin shaft 201 to rotate, thereby achieving the effect of rotating the turntable 2.

[0045] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.

Claims

1. A positioning structure for inverter maintenance, characterized in that: The device includes a workbench (1), a turntable (2), a positioning bolt (3), a bracket (4), and an electric telescopic rod (5). The workbench (1) has an embedded groove (101) in the center of its upper surface. A pin (201) is rotatably mounted on the bottom inner side of the embedded groove (101). The turntable (2) is fixedly mounted on the pin (201). The positioning bolt (3) is threadedly connected to the center of the outer surface of the workbench (1). The bracket (4) is mounted on the upper surface of the turntable (2). The electric telescopic rod (5) is mounted on the center of the upper surface of the bracket (4). The output end of the electric telescopic rod (5) is equipped with a positioning component that facilitates positioning of the inverter above and on both sides.

2. The positioning structure for inverter maintenance according to claim 1, characterized in that: The diameter of the embedded groove (101) is equal to the diameter of the turntable (2), and the horizontal height of the upper surface of the turntable (2) is equal to the horizontal height of the upper surface of the worktable (1).

3. The positioning structure for inverter maintenance according to claim 2, characterized in that: The end of the positioning bolt (3) passes through the embedded groove (101), and the end of the positioning bolt (3) is provided with a frosted layer.

4. The positioning structure for inverter maintenance according to claim 1, characterized in that: The positioning assembly includes a pressure plate (6), collars (601), a fixing block (602), a lead screw (603), a first rotating wheel (604), an internal threaded ring (605), and a clamping plate (606). Collars (601) are sleeved on both the left and right sides of the pressure plate (6). A fixing block (602) is fixedly installed in the center of the outer surface of the pressure plate (6). A lead screw (603) is rotatably mounted on the fixing block (602) via a bearing. A first rotating wheel (604) is fixedly installed at the left end of the lead screw (603). An internal threaded ring (605) is fixedly installed on the outer surface of both collars (601). A clamping plate (606) is fixedly installed at the bottom of the collars (601).

5. The positioning structure for inverter maintenance according to claim 4, characterized in that: The lead screw (603) is opposite to the thread direction of the fixed block (602), and the two internal thread rings (605) are respectively threaded to the lead screw (603) on the left and right sides of the fixed block (602).

6. The positioning structure for inverter maintenance according to claim 5, characterized in that: The clamping plate (606) is a right-angled trapezoid with a gradually decreasing thickness at the bottom.

7. The positioning structure for inverter maintenance according to claim 6, characterized in that: The clamping plate (606) has multiple rectangular grooves (6061) above one side surface facing the center of the pressure plate (6). A spring (6062) is fixedly installed in the rectangular groove (6061), and a rubber strip (6063) is fixedly installed at the other end of the spring (6062).

8. The positioning structure for inverter maintenance according to claim 7, characterized in that: The rubber strip (6063) is a right-angled trapezoid with a gradually decreasing thickness at the bottom. When the spring (6062) is in a naturally extended state, the bottom of the rubber strip (6063) is completely inside the rectangular groove (6061), and the top of the rubber strip (6063) extends out of the rectangular groove (6061). When the spring (6062) is in a compressed state, the rubber strip (6063) is completely embedded in the rectangular groove (6061).

9. The positioning structure for inverter maintenance according to claim 1, characterized in that: A first bevel gear (202) is fixedly installed at the bottom of the pin (201). A drive assembly for driving the pin (201) to rotate is installed below the worktable (1). The drive assembly includes a mounting block (7), a transmission rod (701), a second rotating wheel (702), and a second bevel gear (703). The mounting block (7) is fixedly installed on the outer side of the bottom surface of the worktable (1). The transmission rod (701) is rotatably mounted on the mounting block (7) through a bearing. The second rotating wheel (702) is fixedly installed at the outer end of the transmission rod (701), and the second bevel gear (703) is fixedly installed at the inner end of the transmission rod (701).

10. The positioning structure for inverter maintenance according to claim 9, characterized in that: The first bevel gear (202) meshes with the second bevel gear (703).

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