Anti-toppling device for frequency converter

Abstract

The invention belongs to the technical field of frequency converter installation, and particularly relates to a frequency converter anti-toppling device which comprises a plurality of corner supporting assemblies and a plurality of length-adjustable connecting assemblies. Wherein the plurality of corner supporting assemblies are used for supporting and laterally fitting a plurality of bottom surface corners of the frequency converter respectively; every two adjacent corner supporting assemblies are connected through a length-adjustable connecting assembly, and therefore the multiple corner supporting assemblies and the multiple length-adjustable connecting assemblies form an integral frame structure. One corner supporting assembly is arranged at each corner of the frequency converter, the multiple corner supporting assemblies and the multiple length-adjustable connecting assemblies form an integral frame structure, all supporting parts work cooperatively to form a coherent mechanical system, and linkage instability caused by displacement of a certain part is avoided. And through the length-adjustable connecting assemblies, the area of the surrounding area of the integral frame structure can be adjusted according to the size of the frequency converter, and the adaptability of the anti-toppling device is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of inverter installation, and specifically relates to an inverter anti-dumping device. Background Art

[0002] As a core power control device that utilizes frequency conversion and microelectronics technologies, the inverter module precisely controls AC motors by adjusting the motor's operating power frequency. To ensure safe operation, the inverter module is typically enclosed in a protective enclosure. Existing inverter enclosures often utilize a narrow, tall design. While this saves horizontal space, it poses a risk of unstable center of gravity and tipping when subjected to external shock or vibration, potentially causing mechanical damage to the internal module. To address this, the industry generally incorporates anti-tip devices at the bottom of the enclosure to enhance stability.

[0003] In response to the above problems, Chinese patent application CN202121700002.3 discloses an inverter anti-dumping device and an inverter, the technical solution of which mainly includes a triangular stabilization structure composed of a support rod, a support arm and a locking assembly. Specifically, the support arm is rotatably connected to the bottom of the inverter side wall, and the support rod adopts a dual connection method: one end is rotatably connected to the inverter side wall, and the other end is slidably connected along the length direction of the support arm. A rigid triangular support is formed in the expanded state by the locking assembly, which realizes the conversion between the storage state and the support state. Although this design has the advantages of stable support structure and low space occupancy, it still has the following technical defects in actual application: Mechanical load-bearing defects: The four support arms are independently connected, lacking a lateral linkage mechanism. When the inverter is continuously subjected to external forces in a single direction, the support arms in the corresponding direction will experience concentrated stress, which can easily lead to local structural failure. Furthermore, the lack of a load distribution path poses a risk of reduced overall anti-tilt performance. Durability issues: Frequent unilateral impacts can easily cause mechanical fatigue in the rotating connection of specific support arms, affecting the reusability and long-term reliability of the device; Adaptability limitations: The installation of the device requires structural modification of the inverter housing (such as creating a dedicated groove), which makes it impossible to quickly adapt to existing equipment, increasing the cost and time period of installation and modification. Summary of the Invention

[0004] The technical problem to be solved by the present application is to provide an inverter anti-dumping device, which solves the problem that the stress on the existing anti-dumping device is easily too concentrated and the anti-dumping effect is relatively low.

[0005] The present application provides an inverter anti-dumping device, comprising: Multiple corner support components, used to respectively support and laterally fit multiple bottom corners of the inverter; Multiple length-adjustable connecting components, two adjacent corner support components are connected by the length-adjustable connecting components, and multiple corner support components and multiple length-adjustable connecting components form an integral frame structure.

[0006] Optionally, the length-adjustable connecting assembly includes a first connecting rod, a second connecting rod and an internally threaded sleeve, one end of the first connecting rod has a first thread, one end of the second connecting rod has a second thread, the first thread and the second thread have opposite rotation directions and the same pitch, the two ends of the internally threaded sleeve are respectively connected to the first thread and the second thread, and the ends of the first connecting rod and the second connecting rod away from the internally threaded sleeve are respectively connected to two corner support assemblies.

[0007] Optionally, one end of the first connecting rod and the second connecting rod are respectively screwed to two corner support assemblies.

[0008] Optionally, the outer side surface of the internally threaded sleeve is provided with anti-slip lines.

[0009] Optionally, the corner support assembly includes a limiting side plate for fitting with the corner of the inverter, at least two threaded connection seats arranged on the limiting side plate, and the first connecting rod and the second connecting rod are respectively threadedly connected to the corresponding threaded connection seats.

[0010] Optionally, the limiting side plate includes a right-angle plate, and two outer side surfaces of the right-angle plate are respectively fixedly connected to corresponding threaded connection seats.

[0011] Optionally, the threaded connection seat includes a fixing block and a threaded sleeve passing through the fixing block, and the first connecting rod and the second connecting rod are respectively threadedly connected to the corresponding threaded sleeves.

[0012] Optionally, the corner support assembly also includes a base plate for padding on the bottom of the inverter and an extended support plate arranged on the base plate, the base plate has an extension groove, the extended support plate is arranged in the extension groove, and the extended support plate extends along the extension groove to increase the support area of the corner support assembly.

[0013] Optionally, the extension support plate has an installation groove, an elastic telescopic part is arranged in the installation groove, a connecting plate is provided at one end of the elastic telescopic part, a triangular clamping block is provided on the connecting plate, and the inner side of the extension groove has a plurality of triangular clamping grooves distributed along the telescopic direction of the extension support plate, and the triangular clamping block matches the triangular clamping slot.

[0014] Optionally, both sides of the extension groove are provided with limiting sliding grooves, and both sides of the extension support plate are embedded and slidably connected with the corresponding limiting sliding grooves.

[0015] Optionally, a handle is provided at the end of the extended support plate.

[0016] Optionally, the bottoms of the base plate and the extended support plate are both provided with anti-slip pads.

[0017] Optionally, the corner support assembly further includes a reinforcing support plate, and the reinforcing support plate is arranged on one side of the bottom plate and the extension support plate.

[0018] Optionally, the number of the corner support assemblies is four, the number of the length-adjustable connection assemblies is four, and the four corner support assemblies and the four length-adjustable connection assemblies are alternately connected to form a rectangular frame structure.

[0019] The beneficial effect of the present application is that a corner support assembly is provided at each corner of the frequency converter, and multiple corner support assemblies and multiple length-adjustable connection assemblies form an integral frame structure, which encloses the frequency converter, can more evenly transfer the load to all support points, reduce local stress, and avoid deformation or breakage caused by local overload, and the corner support assembly is fitted to the corner of the frequency converter, without seams or connection points of individual components, the overall design reduces the risk of stress concentration, improves the compression and bending resistance, makes the support more stable, and is easier to assemble and separate from the frequency converter. In addition, the various support parts work together to form a coherent mechanical system, avoiding chain instability caused by displacement of a certain part. The length-adjustable connection assembly allows the enclosed area of the integral frame structure to be adjusted according to the size of the frequency converter, thereby improving the adaptability of the anti-dumping device; and the length-adjustable connection assembly allows the corner support assembly to be tightly fitted or separated from the corresponding frequency converter corner, which helps to improve the anti-dumping effect and assembly convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of the inverter anti-dumping device provided in this application in use; Figure 2 A schematic diagram of the three-dimensional structure of the corner support assembly provided in this application from a top perspective; Figure 3 A schematic diagram of the three-dimensional structure of the corner support assembly provided in this application from a bottom perspective; Figure 4 This is a schematic cross-sectional structure diagram of the corner support assembly provided in this application.

[0021] In the figure: 1.1, inverter; 10, corner support assembly; 110, limiting side plate; 120, threaded connection seat; 121, fixing block; 122, threaded sleeve; 130, bottom plate; 131, extension groove; 132, limiting slide groove; 133, triangular slot; 140, extension support plate; 141, mounting slot; 142, handle; 150, elastic telescopic part; 160, connecting plate; 170, triangular block; 180, reinforced support plate; 190, anti-slip pad; 20, length-adjustable connecting assembly; 210, first connecting rod; 220, second connecting rod; 230, internally threaded sleeve. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0023] like Figure 1-4 As shown, the present application provides an inverter anti-tipping device, comprising: a plurality of corner support assemblies 10 and a plurality of length-adjustable connection assemblies 20; wherein, the plurality of corner support assemblies 10 are used to respectively support and laterally fit the plurality of bottom corners of the inverter 1.1; two adjacent corner support assemblies 10 are connected by a length-adjustable connection assembly 20, so that the plurality of corner support assemblies 10 and the plurality of length-adjustable connection assemblies 20 form an integral frame structure.

[0024] Compared with the prior art, the inverter anti-dumping device provided by this application has a corner support assembly 10 provided at each corner of the inverter 1.1. Multiple corner support assemblies 10 and multiple length-adjustable connection assemblies 20 form an integral frame structure, which encloses the inverter 1.1. This can more evenly transfer the load to all support points, reduce local stress, and avoid deformation or breakage caused by local overload. In addition, the corner support assembly 10 is fitted to the corner of the inverter 1.1, without any seams or connection points of a single component. The overall design reduces the risk of stress concentration, improves the ability to resist pressure and bending, makes the support more stable, and is easier to assemble and separate from the inverter 1.1. In addition, the various supporting parts work together to form a coherent mechanical system to avoid chain instability caused by the displacement of a certain part. The length-adjustable connecting component 20 allows the enclosed area of the integral frame structure to be adjusted according to the size of the inverter 1.1, thereby improving the adaptability of the anti-dumping device; and the length-adjustable connecting component 20 allows the corner support component 10 to be tightly fitted or separated from the corresponding corner of the inverter 1.1, thereby helping to improve the anti-dumping effect and assembly convenience.

[0025] In one possible implementation, the length-adjustable connecting assembly 20 includes a first connecting rod 210, a second connecting rod 220 and an internally threaded sleeve 230. One end of the first connecting rod 210 has a first thread, and one end of the second connecting rod 220 has a second thread. The first thread and the second thread have opposite rotation directions and the same pitch. The two ends of the internally threaded sleeve 230 are respectively connected to the first thread and the second thread, and the ends of the first connecting rod 210 and the second connecting rod 220 away from the internally threaded sleeve 230 are respectively connected to the two corner support assemblies 10.

[0026] Specifically, there are four length-adjustable connecting components 20, two of which are long and two are short, which can better adapt to the shape and size of the protective shell of the inverter 1.1, ensuring that the corner support component 10 can fit tightly at the corner of the inverter 1.1, wherein the first thread and the second thread of the first connecting rod 210 and the second connecting rod 220 are rotated in opposite directions, and the two internal threaded sleeves 230 are rotated in one direction at the same time, which will drive the first connecting rod 210 and the second connecting rod 220 in the same length-adjustable connecting component 20 to approach each other, and make the four corners The corner support assemblies 10 are moved closer together, so that the enclosed area of the integral frame structure is reduced, and the corner support assemblies 10 are tightly fitted at the corners of the inverter 1.1; when the two internal threaded sleeves 230 are rotated in the other direction at the same time, the first connecting rod 210 and the second connecting rod 220 in the adjustable length connecting assembly 20 are driven away from each other, and the four corner support assemblies 10 are moved away from each other, so that the enclosed area of the integral frame structure is increased, thereby achieving support and stability for inverters 1.1 of different sizes by rotating the internal threaded sleeves 230 to prevent them from tipping over.

[0027] In one possible implementation, one end of the first connecting rod 210 and the second connecting rod 220 are respectively screwed to the two corner support assemblies 10. In this way, the first connecting rod 210 and the second connecting rod 220 can be an integrally formed structure or welded together at the ends. It is only necessary for one end of the first connecting rod 210 and the second connecting rod 220 to have threads with opposite rotation directions. When the first connecting rod 210 and the second connecting rod 220 are rotated in more than one direction, the four corner support assemblies 10 are moved closer to each other, so that the enclosed area of the integral frame structure is reduced and the corner support assemblies 10 are tightly fitted at the corners of the inverter 1.1; when the first connecting rod 210 and the second connecting rod 220 are rotated in the other direction, the four corner support assemblies 10 are moved away from each other, so that the enclosed area of the integral frame structure is increased, thereby supporting and stabilizing inverters 1.1 of different sizes by rotating the internal threaded sleeve 230 to prevent them from tipping over.

[0028] In another possible implementation, one end of the first connecting rod 210 and the second connecting rod 220 are respectively screwed to the two corner support assemblies 10, and the thread rotation directions of one end of the first connecting rod 210 and the second connecting rod 220 are opposite; the first connecting rod 210 and the second connecting rod 220 are connected by an internal threaded sleeve 230, and the thread rotation directions of the end of the first connecting rod 210 and the second connecting rod 220 that are close to each other are opposite. As operated above, it is also possible to support and stabilize inverters 1.1 of different sizes to prevent them from tipping over, and the first connecting rod 210, the second connecting rod 220 and the internal threaded sleeve 230 can be disassembled to reduce the occupied space and facilitate transportation.

[0029] In one possible implementation, the corner support assembly 10 includes a limiting side plate 110 for aligning with the corner of the inverter 1.1, at least two threaded connectors 120 disposed on the limiting side plate 110, and a first connecting rod 210 and a second connecting rod 220, each of which is threadedly connected to a corresponding threaded connector 120. Specifically, when the anti-tipping device is assembled and mounted on the inverter 1.1, the limiting side plates 110 in the same corner support assembly 10 align with the adjacent side surfaces of a corner of the inverter 1.1, acting as an upper limit in the XY direction. Two threaded connectors 120 are welded to each limiting side plate 110, each of which is threadedly connected to two length-adjustable connection assemblies 20.

[0030] In one possible implementation, the limiting side plate 110 comprises a right-angled plate, the two outer side surfaces of which are respectively fixedly connected to corresponding threaded connection seats 120. Specifically, the limiting side plate 110 is a continuous integral structure with higher structural strength and is more suitable for the outer shape of the protective housing of the inverter 1.1.

[0031] In one possible implementation, the threaded connection seat 120 includes a fixing block 121 and a threaded sleeve 122 extending through the fixing block 121. The first connecting rod 210 and the second connecting rod 220 are respectively threadedly connected to the corresponding threaded sleeve 122. Specifically, the fixing block 121 is welded to the outside of the limiting side plate 110. The first connecting rod 210 and the second connecting rod 220 can be threaded rods with opposite thread directions. The fixing block 121 has a through hole, and the threaded sleeve 122 extends through the through hole. The threaded sleeve 122 and the fixing block 121 are fixed together by welding. Of course, the fixing block 121 and the threaded sleeve 122 can also be an integrally formed structure.

[0032] In one possible implementation, anti-slip patterns are provided on the outer side of the internally threaded sleeve 230. Specifically, the anti-slip patterns can be grooved on the internally threaded sleeve 230 to form a spiral groove, or can be a plurality of annular grooves arranged in sequence, or can be a raised spiral structure or a plurality of annular protrusions arranged in sequence.

[0033] In one possible implementation, Figure 3 As shown, the corner support assembly 10 also includes a base plate 130 for padding the bottom of the inverter 1.1, an extended support plate 140 arranged on the base plate 130, and an extension groove 131 is provided on the base plate 130. The extended support plate 140 is arranged in the extension groove 131, and the extended support plate 140 extends along the extension groove 131 to increase the support area of the corner support assembly 10.

[0034] Specifically, the bottom plate 130 and the limiting side plates 110 are welded together or connected together by screws. The bottom plate 130 and the limiting side plates 110 form a triangular pyramid structure that is more compatible with the bottom corners of the inverter 1.1. The corner support assembly 10 is in contact with the bottom surface and two side surfaces of the bottom corners of the inverter 1.1, thereby improving the fixing effect of the entire anti-dumping device on the inverter 1.1. During use, the anti-dumping device can be adjusted according to the size of the protective housing of the inverter 1.1, and then the four bottom corners of the inverter 1.1 can be placed on the four bottom plates 130. The anti-dumping device can be adjusted again to make the limiting side plates 110 fit the inverter 1.1. Alternatively, the inverter 1.1 can be hoisted or raised so that it does not exceed the limiting side plates 110, and then the anti-dumping device can be adjusted to make the limiting side plates 110 fit the inverter 1.1, and then the inverter 1.1 can be lowered.

[0035] The extension groove 131 is located on the bottom surface of the base plate 130 and is a rectangular groove. The shape of the extension support plate 140 matches the extension groove 131. The extension support plate 140 is embedded and slidably set in the extension groove 131. When the anti-dumping device is assembled with the inverter 1.1, the extension support plate 140 is pulled out to increase the support area, thereby improving the anti-dumping effect.

[0036] In one possible implementation, Figure 4 As shown, the extension support plate 140 has a mounting groove 141, an elastic telescopic member 150 is arranged in the mounting groove 141, a connecting plate 160 is arranged at one end of the elastic telescopic member 150, and a triangular clamping block 170 is arranged on the connecting plate 160. The inner side of the extension groove 131 has a plurality of triangular clamping grooves 133 distributed along the telescopic direction of the extension support plate 140, and the triangular clamping block 170 matches the triangular clamping groove 133.

[0037] Specifically, the bottom end of the elastic member 150 is connected to the inner wall of the mounting groove 141, and the top end of the elastic member 150 is fixedly connected to the connecting plate 160. The top end of the connecting plate 160 is fixedly mounted with a triangular clamping block 170. Under the action of the elastic member 150, the triangular clamping block 170 extends above the extended support plate 140. The top wall of the extension groove 131 is provided with a plurality of triangular clamping grooves 133, and the triangular clamping blocks 170 match the triangular clamping grooves 133. By arranging the elastic member 150 within the mounting groove 141, the elasticity of the elastic member 150 enables the triangular clamping blocks 170 to engage with the triangular clamping grooves 133 above the extended support plate 140, thereby securing the extended support plate 140 and ensuring that the extended support plate 140 can be more firmly fixed to the base plate 130 during use, preventing loosening or sliding.

[0038] When the extended support plate 140 needs to be adjusted, the triangular clamping block 170 can be disengaged from the triangular clamping groove 133 by applying external force and retracted into the interior of the mounting groove 141, thereby achieving the movement and adjustment of the extended support plate 140. After the extended support plate 140 is adjusted to the appropriate position, the triangular clamping block 170 is re-engaged into the triangular clamping groove 133 under the action of the elastic member 150, thereby securing the extended support plate 140. In this way, the extended support plate 140 can be fully retracted during transportation or storage as needed. During use, the extension amount of the extended support plate 140 can be reasonably adjusted according to the size of the site and the size of the inverter 1.1, thereby increasing convenience and flexibility in use.

[0039] In one possible implementation, both sides of the extension slot 131 are provided with limiting sliding grooves 132, and both sides of the extension support plate 140 are embedded and slidably connected to the corresponding limiting sliding grooves 132. Specifically, both sides of the extension support plate 140 have long protrusions that match the limiting sliding grooves 132, which can slide into the extension slot 131 from the outer end, thereby increasing the stability of the extension support plate 140.

[0040] In one possible implementation, a handle 142 is provided at the end of the extension support plate 140. Specifically, the handle 142 and the extension support plate 140 may be integrally formed or welded together. The handle 142 may be in the shape of a rectangular plate, a rectangular ring, a circular plate, or a circular ring. The handle 142 makes it easier to pull out or retract the extension support plate 140.

[0041] In one possible implementation, anti-skid pads 190 are provided at the bottom of the base plate 130 and the extended support plate 140 to increase the friction between the device and the ground, thereby enhancing the stability of the device and preventing the inverter 1.1 from tipping over when disturbed by external forces.

[0042] In one possible implementation, Figure 2As shown, the corner support assembly 10 further includes a reinforcing support plate 180, which is disposed on the bottom plate 130 and on one side of the extended support plate 140. The reinforcing support plate 180 can provide additional support for the extended support plate 140, thereby enhancing the stability of the entire device. The reinforcing support plate 180 can be made of a metal material to ensure that it has sufficient strength and durability. The bottom surface of the reinforcing support plate 180 is designed to correspond to the extended support plate 140, so that when the extended support plate 140 is subjected to external force, the reinforcing support plate 180 can effectively share the pressure and prevent the extended support plate 140 from being deformed or damaged. The reinforcing support plate 180 can be installed by welding, bolting, etc. to ensure that it is firm and reliable.

[0043] In a possible implementation, there are four corner support assemblies 10 and four length-adjustable connection assemblies 20. The four corner support assemblies 10 and the four length-adjustable connection assemblies 20 are alternately connected to form a rectangular frame structure.

[0044] Specifically, the first connecting rod 210 and the second connecting rod 220 at both ends of the internal threaded sleeve 230 in each corner support assembly 10 are two screws with the same pitch and opposite thread directions. The design of the corner support assembly 10 enables the anti-dumping device to be connected into an integral structure, which is more stable during installation and use. By designing the corner support assembly 10 into a two long and two short form, it can better adapt to the shape and size of the protective shell of the inverter 1.1, ensuring that the anti-dumping device can fit tightly to the bottom of the inverter 1.1.

[0045] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0046] The one or more embodiments of this application are intended to encompass all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this application should be included in the scope of protection of this application.

Claims

1. A frequency converter anti-dumping device, characterized in that: include: A plurality of corner support assemblies (10) for respectively supporting and laterally fitting a plurality of bottom corners of the frequency converter (1.1); A plurality of length-adjustable connecting assemblies (20), wherein two adjacent corner support assemblies (10) are connected via the length-adjustable connecting assemblies (20), and the plurality of corner support assemblies (10) and the plurality of length-adjustable connecting assemblies (20) form an integral frame structure.

2. The inverter anti-dumping device according to claim 1, characterized in that: The length-adjustable connecting assembly (20) comprises a first connecting rod (210), a second connecting rod (220) and an internally threaded sleeve (230), wherein one end of the first connecting rod (210) has a first thread, and one end of the second connecting rod (220) has a second thread, the first thread and the second thread have opposite rotation directions and the same pitch, and the two ends of the internally threaded sleeve (230) are respectively connected to the first thread and the second thread, and the ends of the first connecting rod (210) and the second connecting rod (220) away from the internally threaded sleeve (230) are respectively connected to two corner support assemblies (10).

3. The inverter anti-dumping device according to claim 2, characterized in that: One end of the first connecting rod (210) and the second connecting rod (220) are respectively screwed to the two corner support assemblies (10); And / or, the outer side surface of the internally threaded sleeve (230) is provided with anti-slip patterns.

4. The inverter anti-dumping device according to claim 2 or 3, characterized in that: The corner support assembly (10) comprises a limiting side plate (110) for fitting with a corner of the frequency converter (1.1), at least two threaded connection seats (120) arranged on the limiting side plate (110), and the first connecting rod (210) and the second connecting rod (220) are respectively threadedly connected to the corresponding threaded connection seats (120).

5. The inverter anti-dumping device according to claim 4, characterized in that: The limiting side plate (110) comprises a right-angle plate, and the two outer side surfaces of the right-angle plate are respectively fixedly connected to corresponding threaded connection seats (120); And / or, the threaded connection seat (120) includes a fixed block (121), a threaded sleeve (122) passing through the fixed block (121), and the first connecting rod (210) and the second connecting rod (220) are respectively threadedly connected to the corresponding threaded sleeve (122).

6. The inverter anti-dumping device according to claim 5, characterized in that: The corner support assembly (10) further comprises a base plate (130) for being cushioned on the bottom of the frequency converter (1.1), and an extension support plate (140) arranged on the base plate (130), wherein the base plate (130) has an extension groove (131), and the extension support plate (140) is arranged in the extension groove (131), and the extension support plate (140) extends along the extension groove (131) to increase the support area of the corner support assembly (10).

7. The inverter anti-dumping device according to claim 6, characterized in that: The extension support plate (140) has a mounting groove (141), an elastic telescopic member (150) is arranged in the mounting groove (141), a connecting plate (160) is arranged at one end of the elastic telescopic member (150), a triangular clamping block (170) is arranged on the connecting plate (160), and the inner side of the extension groove (131) has a plurality of triangular clamping grooves (133) distributed along the telescopic direction of the extension support plate (140), and the triangular clamping block (170) matches the triangular clamping grooves (133).

8. The inverter anti-dumping device according to claim 6 or 7, characterized in that: Both sides of the extension groove (131) are provided with limiting sliding grooves (132), and both sides of the extension support plate (140) are embedded and slidably connected to the corresponding limiting sliding grooves (132); And / or, a handle (142) is provided at the end of the extended support plate (140); And / or, the bottoms of the base plate (130) and the extended support plate (140) are both provided with anti-slip pads (190).

9. The inverter anti-dumping device according to claim 8, characterized in that: The corner support assembly (10) further comprises a reinforcement support plate (180), wherein the reinforcement support plate (180) is arranged on the bottom plate (130) and on one side of the extension support plate (140).

10. The inverter anti-dumping device according to any one of claims 1-3, 5-7, and 9, characterized in that: The number of the corner support assemblies (10) is four, the number of the length-adjustable connection assemblies (20) is four, and the four corner support assemblies (10) and the four length-adjustable connection assemblies (20) are alternately connected to form a rectangular frame structure.

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