Frequency conversion cabinet with multi-layer supporting mechanism

Abstract

The invention relates to the technical field of frequency conversion cabinet protection, and provides a frequency conversion cabinet with a multi-layer supporting mechanism, which comprises a base, a protection frame is fixedly mounted at the top of the base, damping rods I are hinged to four corners of the inner wall of the protection frame, and a frequency conversion cabinet body is hinged to the inner wall of the protection frame through the damping rods I; a top plate is fixedly mounted at the top of the protection frame, and a transfer plate is hinged to the bottom of the top plate. According to the device, through redesign, the protection structure is greatly simplified, meanwhile, the situation that the device bears pressure from the horizontal direction, and consequently materials are pressed, deform and lose efficacy is avoided, and in order to achieve the purpose, a multi-layer supporting structure is readjusted through the device, specifically, according to the device, a lever with a transfer plate as a force arm is adopted; therefore, the stone breaking pressure borne by the outer protection plate is reduced to the maximum extent and then acts on the second damping rod, the pressure borne by the second damping rod is reduced, and the horizontal pressure of the second damping rod and the transmission plate on the base and the protection frame is reduced.

Description

Technical Field

[0001] This invention relates to the field of frequency converter cabinet protection technology, specifically to a frequency converter cabinet with a multi-layer support mechanism. Background Technology

[0002] A frequency converter cabinet is a control cabinet that uses a frequency converter to drive a power unit. It is mainly used to regulate motor speed, achieving energy saving and automated control of equipment. It is widely used in water supply, industrial, and air conditioning fields. Since the actual application scenarios of frequency converter cabinets include many outdoor environments, such as outdoors and inside mines, to protect the cabinet and prevent damage from rocks and other impurities in the mine, a multi-layered support structure is generally installed on the outside of the frequency converter cabinet. This multi-layered support structure includes shock-absorbing modules on the inner side and anti-impact modules on the outer side. The shock-absorbing modules are responsible for maintaining the stability of the cabinet and absorbing impact energy, while the anti-impact modules directly face falling rocks and other large debris. The device provides direct protection against falling debris and isolates it from crushed stones and impurities. However, existing support mechanisms are relatively complex, such as those in CN202411719983.4. These mechanisms use a rotatable protective plate on the outside to provide rotation space after being compressed, and then utilize the internal energy-absorbing part to fully absorb energy. However, this design cannot achieve effective force distribution. The pressure and impact from the crushed stones and impurities will generate horizontal pressure on the device, which will generate lateral pressure on the outer part of the direct protection structure. This can easily lead to long-term pressure on the support mechanism material and deformation. Therefore, this structural design still needs improvement, which is the purpose of this application. Summary of the Invention

[0003] To overcome the above-mentioned defects, embodiments of the present invention provide a frequency converter cabinet with a multi-layer support mechanism, which solves the technical problems of complex structure and unreasonable stress structure design in related technologies.

[0004] At least one embodiment of the present invention provides a frequency converter cabinet with a multi-layer support mechanism, including a base, wherein the top of the base is fixedly mounted with: The protective frame has shock-absorbing rods hinged at the four corners of its inner wall. The variable frequency cabinet body is hinged to the inner wall of the protective frame through the shock-absorbing rods. A top plate is fixedly installed on the top of the protective frame, and a transfer plate is hinged to the bottom of the top plate. The second shock absorber includes two receiving cylinders located on both sides of the protective frame. The inner wall of the receiving cylinder is sealed with a piston and a spring. The inner cavity of the receiving cylinder is filled with hydraulic oil. The bottom end of the piston has a through-hole. The spring is compressed and disposed at the bottom of the inner wall of the receiving cylinder. The top of the piston is hinged to the bottom of the transfer plate, and an outer protective plate is fixedly connected to the top of the outer side of the transfer plate. A buffer pad is fixedly connected to the outer side of the outer protective plate.

[0005] According to one embodiment of this application, the shock-absorbing rod includes four sets of receiving cylinders hinged to the four corners of the inner wall of the protective frame. The receiving cylinder is internally sealed with a piston and a spring. The spring is compressed inside the receiving cylinder. The piston has an opening at one end on its inner side and is hinged to the inverter cabinet body at one end on its outer side.

[0006] According to one embodiment of this application, four sets of shock-absorbing rods are diagonally distributed between the protective frame and the inverter cabinet body, and multiple sets of buffer columns are fixedly connected between the inner wall of the protective frame and the outer peripheral surface of the inverter cabinet body.

[0007] According to one embodiment of this application, the two sets of receiving cylinders are respectively hinged to the left and right sides of the top of the base and are symmetrically distributed. Support columns are fixedly connected to the left and right sides of the bottom of the top plate. The two sets of transfer plates are respectively hinged to the bottom of the top plate through the two sets of support columns.

[0008] According to one embodiment of this application, both the buffer column and the buffer pad are made of rubber blocks, and the top of the inner side of the transfer plate abuts against the left and right sides of the top plate, respectively.

[0009] According to one embodiment of this application, the inner side of the outer protective plate is provided with multiple sets of reinforcing ribs, and a 10° angle is left between the inner side of the transfer plate and the two sides of the protective frame.

[0010] According to one embodiment of this application, the axes of the second receiving cylinder and the second piston are at a 26° angle with the two sides of the protective frame, and the two ends of the second spring are elastically connected to the second receiving cylinder and the second piston, respectively.

[0011] According to one embodiment of this application, the two ends of the spring one are elastically connected to the receiving cylinder one and the piston one, respectively, and the hydraulic oil one and hydraulic oil two are both made of kerosene.

[0012] According to one embodiment of this application, the cross-sectional shape of both piston two and piston one is "T" shaped, hydraulic oil two can flow along port two, and hydraulic oil one can flow along port one.

[0013] The beneficial effects of this disclosure are: This device has been redesigned, greatly simplifying the protective structure and preventing material deformation failure caused by horizontal pressure. To achieve this, the multi-layer support structure has been readjusted, as follows: 1. This device provides rigid protection for the inverter cabinet body by adding a top plate to the top of the protective frame. Transfer plates hinged to both sides of the bottom of the top plate block debris such as gravel from the sides. A second shock-absorbing rod is hinged to the top of the base and connected to the inner side of the transfer plate, forming a buffer support for the transfer plate. When gravel falls from the mine, the top plate supports the gravel from above, while the transfer plate handles the gravel from both sides of the device. When the transfer plate is under pressure, it is protected by an outer protective plate and a buffer pad located on the outside of the transfer plate. The pressure from the crushed stone is converted into the kinetic energy of the inward rotation of the transmission plate. The transmission plate is supported by a rotatable shock absorber rod. The design of the outer protective plate connected to the top of the outer side of the transmission plate and the piston rod connected to the bottom of the inner side of the transmission plate forms a lever with the support column as the fulcrum and the transmission plate as the lever arm. This reduces the pressure from the crushed stone on the outer protective plate to the maximum extent and then applies it to the shock absorber rod, reducing the pressure on the shock absorber rod and the horizontal pressure of the shock absorber rod and the transmission plate on the base and the protective frame.

[0014] 2. The shock absorber rod is hinged to the left and right sides of the top of the base. During the hinge process with the transfer plate, the piston can drive the receiving cylinder to rotate. When the transfer plate is subjected to pressure from the gravel outside the outer protective plate, it will transfer the pressure to the inside of the receiving cylinder through the piston. The pressure is directly transferred to the top of the base along the axis of the receiving cylinder. According to the vector analysis of the pressure, the smaller the angle between the receiving cylinder and the outer side of the protective frame, the smaller the horizontal separation from the transfer plate, and the greater the vertical component force on the base. Therefore, the hinge design of the shock absorber rod and the transfer plate can significantly avoid the horizontal separation of the base and the protective frame from the pressure of the gravel, and the vertical component force can also help the base to be more stable.

[0015] 3. This device features a redesigned vibration damping module on the inner side of the top plate. This module includes a buffer column and a damping rod. The inverter cabinet body is located in the middle of the protective frame. First, the buffer column supports the inverter cabinet body, providing the first layer of vibration damping protection by utilizing the compression or stretching deformation characteristics of the buffer column. Then, four sets of damping rods are used to hinge the inverter cabinet body to the middle of the protective frame. A pair of springs provides elastic support for the piston, thus providing support for the inverter cabinet body. By filling the inner cavity of the receiving cylinder with hydraulic oil and opening a port at one end of the inner side of the piston, the piston generates a damping sensation when sliding relative to the receiving cylinder, providing a second layer of vibration damping for the inverter cabinet body. In this way, a large portion of the vibration acting on the inverter cabinet body will be reduced. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view diagram of the overall structure of the present invention; Figure 2 This is a bottom view of the overall structure of the present invention; Figure 3 This is a front sectional view of the overall structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A; Figure 5 For the present invention Figure 3 Enlarged schematic diagram of the structure at point B; Figure 6 This is a schematic diagram showing the separation of the shock absorber rod II, support column, transfer plate, outer protective plate, reinforcing rib and buffer pad of the present invention; Figure 7 This is a schematic diagram showing the separation of the buffer column, the shock absorber rod, and the inverter cabinet body of the present invention. Figure 8 This is a frontal perspective view of the overall structure of the present invention.

[0018] The components include: 1. Base; 2. Protective frame; 3. Top plate; 4. Buffer column; 5. Shock absorber rod 1; 51. Receiving cylinder 1; 52. Piston 1; 53. Through port 1; 54. Spring 1; 55. Hydraulic oil 1; 6. Shock absorber rod 2; 61. Receiving cylinder 2; 62. Piston 2; 63. Through port 2; 64. Spring 2; 65. Hydraulic oil 2; 7. Support column; 8. Transfer plate; 9. Outer protective plate; 10. Reinforcing rib; 11. Buffer pad; 12. Variable frequency cabinet body. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0023] To make the drawings concise and easy to understand, some drawings only show one of the components with the same structure or function, or only one of them is marked. In this article, "one" not only means "only one", but can also mean "more than one", and "several" includes "two" and "more than two".

[0024] Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. It is understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. The embodiments of this application are described in detail below with reference to the accompanying drawings.

[0025] like Figures 1-8 As shown, a frequency converter cabinet with a multi-layer support mechanism is illustrated in one embodiment of the present invention, including a base 1, on the top of which is fixedly mounted: The protective frame 2 has shock-absorbing rods 5 hinged at the four corners of its inner wall. The variable frequency cabinet body 12 is hinged to the inner wall of the protective frame 2 through the shock-absorbing rods 5. The top plate 3 is fixedly installed on the top of the protective frame 2, and the bottom of the top plate 3 is hinged to the transfer plate 8. The shock absorber rod 2 6 includes a receiving cylinder 2 61 located on both sides of the protective frame 2. The inner wall of the receiving cylinder 2 61 is sealed with a piston 2 62 and a spring 2 64. The inner cavity of the receiving cylinder 2 61 is filled with hydraulic oil 2 65. The bottom end of the piston 2 62 is provided with a through port 2 63. The spring 2 64 is compressed and set at the bottom of the inner wall of the receiving cylinder 2 61. The top of piston 62 is hinged to the bottom of transfer plate 8. An outer protective plate 9 is fixedly connected to the top of the outer side of transfer plate 8, and a buffer pad 11 is fixedly connected to the outer side of outer protective plate 9. This device has been redesigned, greatly simplifying the protective structure and preventing material deformation failure caused by horizontal pressure. To achieve this, the multi-layer support structure has been readjusted, as follows: 1. This device provides rigid protection for the inverter cabinet body 12 by adding a top plate 3 to the top of the protective frame 2. Transfer plates 8, hinged to both sides of the bottom of the top plate 3, block debris and other impurities from the sides. A shock-absorbing rod 6 is hinged to the top of the base 1 and connected to the inner side of the transfer plate 8, forming a buffer support for the transfer plate 8. When debris falls from the mine, the top plate 3 supports the debris from the top, while the transfer plate 8 handles debris from both sides of the device. When the transfer plate 8 is under pressure, it is protected by the outer protective plate 9 and the buffer pad 11 located on the outer side of the transfer plate 8. The pressure from the crushed stone is converted into the kinetic energy of the inward rotation of the transmission plate 8. The transmission plate 8 is supported by a rotatable shock absorber rod 6. The outer protective plate 9 is connected to the top of the outer side of the transmission plate 8, and the piston 62 is connected to the bottom of the inner side of the transmission plate 8. This forms a lever with the support column 7 as the fulcrum and the transmission plate 8 as the lever arm. This reduces the pressure from the crushed stone on the outer protective plate 9 to the maximum extent and then applies it to the shock absorber rod 6, reducing the pressure on the shock absorber rod 6 and the horizontal pressure of the shock absorber rod 6 and the transmission plate 8 on the base 1 and the protective frame 2.

[0026] 2. Shock-absorbing rod 2 is hinged to the left and right sides of the top of the base 1, so that piston 2 62 can drive the receiving cylinder 2 61 to rotate during the hinge process with the transmission plate 8. When the transmission plate 8 is subjected to pressure from the gravel outside the outer protective plate 9, it will transmit the pressure to the inner side of the receiving cylinder 2 61 through piston 2 62. The pressure is directly transmitted to the top of the base 1 along the axis of the receiving cylinder 2 61. According to the vector analysis of the pressure, as the angle between the receiving cylinder 2 61 and the outer side of the protective frame 2 becomes smaller, the horizontal separation from the transmission plate 8 becomes smaller, and the vertical component force on the base 1 becomes larger. Therefore, by using the hinge design of shock-absorbing rod 2 6 and transmission plate 8, the horizontal separation of the base 1 and the protective frame 2 from the pressure of gravel can be significantly avoided, and the vertical component force can also help the base 1 to be more stable.

[0027] In this embodiment, the shock absorber rod 5 includes four sets of receiving cylinders 51 hinged to the four corners of the inner wall of the protective frame 2. The receiving cylinder 51 is sealed with a piston 52 and a spring 54. The spring 54 is compressed and disposed inside the receiving cylinder 51. One end of the piston 52 is provided with a through-hole 53, and one end of the piston 52 is hinged to the inverter cabinet body 12. The device features a redesigned vibration damping module on the inner side of the top plate 3. This module includes buffer columns 4 and damping rods 5. The inverter cabinet body 12 is located in the middle of the protective frame 2. First, the buffer columns 4 support the inverter cabinet body 12, providing the first layer of vibration damping protection by utilizing the compressible or stretchable deformation characteristics of the buffer columns 4. Then, four sets of damping rods 5 are used to hinge the inverter cabinet body 12 to the middle of the protective frame 2. Springs 54 provide elastic support for the piston 52, thus providing support for the inverter cabinet body 12. By filling the inner cavity of the receiving cylinder 51 with hydraulic oil 55 and opening a port 53 at one end of the inner side of the piston 52, the piston 52 generates a damping sensation when sliding relative to the receiving cylinder 51, providing the second layer of vibration damping for the inverter cabinet body 12. In this way, a large part of the vibration acting on the inverter cabinet body 12 is reduced, effectively improving the stability of the device.

[0028] In this embodiment, four sets of shock-absorbing rods 5 are diagonally distributed between the protective frame 2 and the inverter cabinet body 12, and multiple sets of buffer columns 4 are fixedly connected between the inner wall of the protective frame 2 and the outer peripheral surface of the inverter cabinet body 12. The shock-absorbing rod 5 is used to provide damping support for the inverter cabinet body 12. When the protective frame 2 and the top plate 3 are vibrated, the receiving cylinder 51 will be displaced first. Since the inverter cabinet body 12 is located in the middle of the protective frame 2, there will be relative sliding and rotational adaptation between the receiving cylinder 51 and the piston 52. At this time, by filling the inner cavity of the receiving cylinder 51 with hydraulic oil 55 and by opening a through-hole 53 at one end of the inner side of the piston 52, the piston 52 will generate a damping feeling when sliding relative to the receiving cylinder 51, thus providing a second layer of shock-absorbing buffer protection for the inverter cabinet body 12.

[0029] In this embodiment, two sets of receiving cylinders 61 are respectively hinged and installed on the left and right sides of the top of the base 1, and are symmetrically distributed on the left and right. Support columns 7 are fixedly connected to the left and right sides of the bottom of the top plate 3. Two sets of transfer plates 8 are respectively hinged and installed on the bottom of the top plate 3 through two sets of support columns 7. The receiving cylinder 61 is hinged to the top of the base 1. The piston 62 is sealed inside the receiving cylinder and is hinged to the transfer plate 8. When the transfer plate 8 is subjected to pressure from the crushed stone outside the outer protective plate 9, it will rotate to drive the piston 62 and the receiving cylinder 61 to move. The piston 62 moves towards the inside of the receiving cylinder 61 when it rotates, and provides buffering under the damping action of the hydraulic oil 65.

[0030] In this embodiment, both the buffer column 4 and the buffer pad 11 are made of rubber blocks, and the top of the inner side of the transfer plate 8 abuts against the left and right sides of the top plate 3 respectively. The main function of the buffer pillar 4 and the buffer pad 11 is to provide cushioning and protection, using their soft and deformable surfaces to absorb damage.

[0031] In this embodiment, the inner side of the outer protective plate 9 is provided with multiple sets of reinforcing ribs 10, and a 10° angle is left between the inner side of the transfer plate 8 and the two sides of the protective frame 2. like Figure 6 As shown, the inner side of the outer protective plate 9 is reinforced with a reinforcing rib 10, which makes the overall structural strength of the outer protective plate 9 greater and can withstand direct impact from gravel. The 10° angle between the transfer plate 8 and the side of the protective frame 2 provides space for the transfer plate 8 to rotate and unload force.

[0032] In this embodiment, the axes of the second receiving cylinder 61 and the second piston 62 are at an angle of 26° with the two sides of the protective frame 2, and the two ends of the second spring 64 are elastically connected to the second receiving cylinder 61 and the second piston 62 respectively. like Figure 3 As shown, a 26° angle needs to be left between the axis of the receiving cylinder 61 and the side of the protective frame 2 to provide space for the transmission plate 8 to press down on the piston 62 and drive it to rotate.

[0033] In this embodiment, the two ends of spring 54 are elastically connected to the receiving cylinder 51 and piston 52 respectively, and hydraulic oil 55 and hydraulic oil 65 are both made of kerosene. As shown in Figure 5, the spring 54, when compressed, can provide an outward thrust to the piston 52, thereby providing support for the inverter cabinet body 12. Kerosene can lubricate the space between the piston 52 and the inner wall of the receiving cylinder 51, and between the piston 62 and the inner wall of the receiving cylinder 61. It is also inexpensive and readily available.

[0034] In this embodiment, the axial cross-sectional shape of piston 2 62 and piston 1 52 is "T" shaped, hydraulic oil 2 65 can flow along port 2 63, and hydraulic oil 1 55 can flow along port 1 53. Both piston 2 62 and piston 1 52 have a "T" shaped axial section. Their inner ends are respectively provided with through port 2 63 and through port 1 53. When piston 2 62 and piston 1 52 slide relative to receiving cylinder 2 61 and receiving cylinder 1 51 respectively, hydraulic oil 1 55 and hydraulic oil 2 65 will provide a damping pressure, thereby providing a buffering function.

[0035] When this device is in operation: First, the base 1 is fixed on the ground to provide support. The inverter cabinet body 12 is protected by the protective frame 2, buffer columns 4, and shock-absorbing rods 5, which provide the first layer of protection, i.e., shock absorption. When the device is subjected to vibration, the protective frame 2, buffer columns 4, and shock-absorbing rods 5 provide buffering, specifically as follows: the protective frame 2, buffer columns 4, and shock-absorbing rods 5 move relative to the inverter cabinet body 12. At this time, the buffer columns 4 located at different positions will be stretched and deformed respectively, thereby absorbing some energy. Then, as... Figure 3 , Figure 5 As shown, when the protective frame 2 and the inverter cabinet body 12 are relatively displaced, the receiving cylinder 51 and the piston 52 will slide relative to each other and rotate simultaneously. At this time, the piston 52 is resisted by the hydraulic oil 55 during the movement and absorbs some energy. In this way, the vibration acting on the inverter cabinet body 12 itself will be greatly reduced, and the inverter cabinet body 12 as a whole can remain stable. Then, when the gravel falls onto the upper surface of the top plate 3, the top plate 3 transmits the force to the base 1 through the protective frame 2, and it is absorbed by the ground. When the gravel falls onto the outside of the transfer plate 8, the buffer pad 11 bears the pressure first. The buffer pad 11 and the outer protective plate 9 then apply pressure to the transfer plate 8, causing the transfer plate 8 to rotate downwards around the axis of the support column 7. Figure 3 As shown, the transfer plate 8 drives the housing cylinder 61 to rotate around its hinge point via piston 62. During the rotation, piston 62 slides into the inner cavity of housing cylinder 61 and is resisted by hydraulic oil 65 and spring 64, thereby absorbing the impact force brought by the gravel. Finally, as the rotation angle of the transmission plate 8 increases, the horizontal component of the force exerted on the base 1 by the overall rotation of the shock absorber rod 6 decreases, while the downward vertical component increases. Therefore, as the rotation angle of the transmission plate 8 increases, most of the force on the transmission plate 8 is divided into vertically downward pressure, which not only avoids horizontal pressure deformation on the base 1 and the protective frame 2, but also enhances the stability of the device. In addition, the pressure from the gravel borne by the transmission plate 8, the outer protective plate 9, and the buffer pad 11 is applied to the top of the outer side of the transmission plate 8 through the outer protective plate 9, and the supporting force from the piston 62 is applied to the bottom of the inner side of the transmission plate 8. This effectively forms a lever with the support column 7 as the fulcrum and the transmission plate 8 as the lever arm. The pressure from the gravel is necessarily much greater than the supporting force from the piston 62 on the transmission plate 8. Figure 3 In the middle, the distance from the hinge point between the top of piston 62 and the transmission plate 8 to the support column 7 is L1, and the distance from the connection point between the outer protective plate 9 and the transmission plate 8 to the support column 7 is L2. Let the pressure from gravel and other impurities on the transmission plate 8 be F2, and the supporting force from the shock absorber rod 6 be F1. According to the balance adjustment of the lever, we know that: F1*L1=F2*L2. Therefore, since L1 is greater than L2, F2 is greater than F1. This is reflected in the fact that piston 62 can resist the pressure from the crushed stone with less pressure and maintain the stability of the device.

[0036] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A frequency converter cabinet with a multi-layer support mechanism, comprising a base (1), characterized in that, The top of the base (1) is fixedly installed with: The protective frame (2) has shock absorber rods (5) hinged at the four corners of the inner wall of the protective frame (2). The inner wall of the protective frame (2) is hinged to the frequency converter cabinet body (12) through the shock absorber rods (5). The top plate (3) is fixedly installed on the top of the protective frame (2). The bottom of the top plate (3) is hinged to the transfer plate (8). The shock absorber rod (6) includes a receiving cylinder (61) located on both sides of the protective frame (2). The inner wall of the receiving cylinder (61) is sealed with a piston (62) and a spring (64). The inner cavity of the receiving cylinder (61) is filled with hydraulic oil (65). The bottom end of the piston (62) is provided with a through port (63). The spring (64) is compressed and set at the bottom of the inner wall of the receiving cylinder (61). The top of the piston (62) is hinged to the bottom of the transfer plate (8), and an outer protective plate (9) is fixedly connected to the top of the outer side of the transfer plate (8), and a buffer pad (11) is fixedly connected to the outer side of the outer protective plate (9).

2. The frequency converter cabinet with a multi-layer support mechanism according to claim 1, characterized in that, The shock-absorbing rod (5) includes four sets of receiving cylinders (51) hinged to the four corners of the inner wall of the protective frame (2). The receiving cylinder (51) is sealed with a piston (52) and a spring (54). The spring (54) is compressed inside the receiving cylinder (51). The piston (52) has an opening (53) on one end of its inner side and is hinged to the variable frequency cabinet body (12) on one side of its outer side.

3. A frequency converter cabinet with a multi-layer support mechanism according to claim 2, characterized in that, The four sets of shock-absorbing rods (5) are diagonally distributed between the protective frame (2) and the inverter cabinet body (12). Multiple sets of buffer columns (4) are fixedly connected between the inner wall of the protective frame (2) and the outer peripheral surface of the inverter cabinet body (12).

4. A frequency converter cabinet with a multi-layer support mechanism according to claim 3, characterized in that, The two sets of receiving cylinders (61) are respectively hinged to the left and right sides of the top of the base (1) and are symmetrically distributed. The left and right sides of the bottom of the top plate (3) are fixedly connected to the support columns (7). The two sets of transfer plates (8) are respectively hinged to the bottom of the top plate (3) through the two sets of support columns (7).

5. A frequency converter cabinet with a multi-layer support mechanism according to claim 4, characterized in that, Both the buffer column (4) and the buffer pad (11) are made of rubber blocks, and the top of the inner side of the transfer plate (8) abuts against the left and right sides of the top plate (3).

6. A frequency converter cabinet with a multi-layer support mechanism according to claim 5, characterized in that, The inner side of the outer protective plate (9) is provided with multiple sets of reinforcing ribs (10), and there is a 10° angle between the inner side of the transfer plate (8) and the two sides of the protective frame (2).

7. A frequency converter cabinet with a multi-layer support mechanism according to claim 6, characterized in that, The axes of the second receiving cylinder (61) and the second piston (62) are at an angle of 26° with the two sides of the protective frame (2), and the two ends of the second spring (64) are elastically connected to the second receiving cylinder (61) and the second piston (62) respectively.

8. A frequency converter cabinet with a multi-layer support mechanism according to claim 7, characterized in that, The two ends of the spring one (54) are elastically connected to the receiving cylinder one (51) and the piston one (52) respectively, and the hydraulic oil one (55) and the hydraulic oil two (65) are both made of kerosene.

9. A frequency converter cabinet with a multi-layer support mechanism according to claim 8, characterized in that, The cross-sectional shape of both piston 2 (62) and piston 1 (52) is "T" shaped. Hydraulic oil 2 (65) can flow along port 2 (63) and hydraulic oil 1 (55) can flow along port 1 (53).

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