High strength balanced anti-vibration mobile chassis

Abstract

The utility model discloses a high -strength balance anti -vibration movable chassis, including four corner connecting pieces and two cross beams and two longitudinal beams, two cross beams and two longitudinal beams combination form a quadrilateral frame type structure, four corner connecting pieces respectively one one -to -one corresponding detachable setting in four corners of quadrilateral frame type structure, corner connecting piece is configured as in same plane, fixes with one longitudinal beam end portion to one cross beam end portion, to make two cross beams and two longitudinal beams head -to -tail connection, in the utility model, four corner connecting pieces respectively one one -to -one corresponding detachable setting in four corners of quadrilateral frame type structure, therefore, two cross beams and two longitudinal beams can freely dismouting, once some beam appears the cracking phenomenon, only needs corresponding replacement cracking cross beam and / or longitudinal beam.

Description

Technical Field

[0001] This utility model relates to the field of electrical cabinet technology, specifically to a high-strength, balanced, and vibration-resistant movable base frame. Background Technology

[0002] A control cabinet is a protective enclosure used to centrally house electrical equipment, automated control components (such as PLCs, frequency converters, circuit breakers, terminal blocks, etc.), and instruments. It is widely used in industrial automation, power, and construction industries, serving to organize wiring and protect internal equipment from environmental factors (such as dust, water, and impact). Currently, most control cabinets require a fixed base frame for support during installation. These general-purpose base frames are typically custom-made for specific cabinet dimensions, and are usually made of wood or engineering plastics, with a fixed structural form.

[0003] The commonly used fixed base frame has significant technical defects:

[0004] First, wooden or plastic base frames are one-piece designs, which are prone to deformation and cracking when supporting heavy control cabinets. Once deformed or cracked, they must be completely replaced, affecting the cost of use.

[0005] Secondly, because the wooden or plastic base frame is a one-piece design, the size of the control cabinet it supports is fixed. That is, it can accommodate control cabinets whose bottom size matches the base frame size and control cabinets whose bottom size is smaller than the base frame size, but it cannot be used for larger control cabinets.

[0006] Finally, it has poor adaptability to the ground and low stability; when installed on sloping ground, the base frame has difficulty keeping the cabinet level, causing the cabinet door to tilt and get stuck, affecting normal opening and closing operations.

[0007] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0008] This invention provides a high-strength, balanced, and vibration-resistant movable base frame, aiming to solve the technical problems mentioned in the background art.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-strength, balanced, and vibration-resistant movable base frame, comprising four corner connectors, two crossbeams, and two longitudinal beams; the two crossbeams and two longitudinal beams combine to form a quadrilateral frame structure; the four corner connectors are detachably and correspondingly disposed at the four corners of the quadrilateral frame structure; the corner connectors are configured in the same plane to fix the end of an adjacent crossbeam to the end of an adjacent longitudinal beam, so that the two crossbeams and two longitudinal beams are connected end to end; the upper surface of the quadrilateral frame structure is used to support the control cabinet; it also includes multiple mounting components; each mounting component is paired with each corner connector. The mounting component should be positioned and connected to the lower surface of the corner connector. The mounting component includes a first support and a second support. When the quadrilateral frame structure supports the control cabinet, one of the first support and the second support is positioned and connected to the lower surface of the corner connector, while the other is supported and positioned on the ground. The first support and the second support are coaxially arranged to form a support structure for keeping the lower surface of the quadrilateral frame structure at a set height from the ground. The second support is configured to move relative to the first support along the axis of the two and to be positioned after moving a set length, so as to complete the action of increasing or decreasing the height of the support structure.

[0010] The relevant content in the above plan is explained as follows:

[0011] In the above scheme, the quadrilateral frame structure can be a rectangle, a square, or a rhombus.

[0012] In the above scheme, when the first support and the second support are engaged to achieve height adjustment, the height adjustment can be achieved by threaded engagement; or by the engagement of a pin with multiple holes; or by hydraulic or pneumatic drive.

[0013] In the above scheme, positioning is performed after the movement is set to a certain length. It should be noted that the set length must meet the requirement that after the first support member and the second support member move relative to each other, they can still move relative to each other. There should be no situation where the first support member and the second support member get stuck after moving relative to each other to the set length.

[0014] In the above scheme, the four corner connectors are detachably installed at the four corners of the quadrilateral frame structure, so the two crossbeams and two longitudinal beams can be freely disassembled and assembled. Once a beam cracks, only the cracked crossbeam and / or longitudinal beam needs to be replaced.

[0015] In the above solution, since the two crossbeams and two longitudinal beams can be freely disassembled and assembled, users can freely replace the crossbeams and / or longitudinal beams of appropriate lengths to adapt to control cabinets of different sizes.

[0016] In the above scheme, the lower surface of the quadrilateral frame structure can be kept at a set height from the ground by the relative movement of the first support member and the second support member. At the same time, once installed on an inclined ground, the second support member is directly driven to move relative to the first support member along the axial direction and is positioned after moving a set length, so as to complete the action of increasing or decreasing the height of the support structure.

[0017] In a further technical solution, the first support member includes a threaded cylinder with threads on its inner wall, which is disposed on the lower surface of the corner connector; the second support member includes a threaded post whose outer wall is screwed into the inner wall of the threaded cylinder, the upper end of the threaded post is inserted into the threaded cylinder, and a nut is provided on the outer wall of the threaded post at the lower end of the threaded cylinder. Under the action of external force, the nut rotates around the axis of the threaded cylinder to guide the threaded post to move relative to the threaded cylinder along the axial direction of the threaded cylinder.

[0018] The above design is used to better accomplish the action of increasing or decreasing the height of the support structure.

[0019] Specifically, the nut is rotated manually, and then, under the action of external force, the nut rotates around the axis of the threaded cylinder to guide the threaded column to move relative to the threaded cylinder along the axial direction of the threaded cylinder.

[0020] Unlike the combination of a pin and multiple holes, which sometimes requires manual assistance to lift the quadrilateral frame structure during operation, the combination of a threaded cylinder, nut, and threaded post offers greater stability and ease of operation, eliminating the need for manual assistance to lift the quadrilateral frame structure.

[0021] A further technical solution involves providing a rubber base at the lower end of the threaded column. This design enhances the stability of the quadrilateral frame structure when supporting the control cabinet.

[0022] A further technical solution is provided in which the lower surface of the corner connector is provided with a recessed rectangular groove, and two positioning holes communicating with the interior of the rectangular groove are provided on the outer peripheral side of the corner connector, the axes of the two positioning holes being perpendicular to the outer peripheral side; the lower surface of the corner connector is provided with a recessed U-shaped groove with its opening facing downward, the outer peripheral side of the corner connector with the positioning holes communicating with one end of the U-shaped groove, the other end of the U-shaped groove extending to the inner wall of the rectangular groove, and the axis of the U-shaped groove being parallel to the side of the rectangular groove in the width direction.

[0023] The above design allows for better securing of subsequent installation components.

[0024] In a further technical solution, the U-shaped groove is located between the two positioning holes on the outer peripheral side of the corner connector; and the line connecting the points on the axes of the two positioning holes and the points on the axis of the U-shaped groove on the outer peripheral side of the corner connector forms a triangular structure.

[0025] With the above design, the subsequent fixing of the installation parts can be ensured to be more secure through the cooperation of the two positioning holes and the U-shaped groove.

[0026] In a further technical solution, the mounting component also includes a fixing plate. The upper surface of the fixing plate is provided with two inserts configured to be inserted into rectangular slots. The two inserts are spaced apart, and each insert has a screw hole corresponding to a positioning hole. The lower surface of the fixing plate is fixedly connected to the upper end of the threaded cylinder. A matching protrusion matching the U-shaped groove is provided between the two inserts. When the upper surface of the fixing plate is in contact with the lower surface of the corner connector, all the inserts are inserted into the rectangular slots until the screw holes are aligned with the positioning holes, and the matching protrusion is inserted into the U-shaped groove.

[0027] The above design enables the mounting components to achieve stable and secure positioning.

[0028] Specifically, when fixing the mounting component, directly insert the two inserts into the rectangular slot. After the two inserts are fully inserted, the matching protrusion will also be embedded in the U-shaped groove. At this time, the screw hole is aligned with the positioning hole. Then, insert the screw into the aligned screw hole and the positioning hole. In this state, the cooperation between the screw and the aligned screw hole and positioning hole, as well as the cooperation between the matching protrusion and the U-shaped groove, can better ensure the firmness and stability of the mounting component when it is fixed.

[0029] It is important to note that the size of the fixing plate should be larger than the size of the rectangular slot. This is to prevent the fixing plate from being too small, which could cause the mounting parts to wobble or make the connection more difficult. For example, when inserting the upper and lower parts, the fixing plate may not be able to play an auxiliary positioning role, resulting in the screw holes not aligning properly with the positioning holes.

[0030] In a further technical solution, both the crossbeam and the longitudinal beam are formed by bending sheet metal, and the cross-section of both the crossbeam and the longitudinal beam is C-shaped; based on the quadrilateral frame structure, the opening of the C-shape faces the inside of the quadrilateral frame structure.

[0031] With the above design, the crossbeams and longitudinal beams, both with C-shaped cross sections, can be made of metal, which greatly increases their strength. At the same time, the use of threaded posts (i.e. bolts) and rubber bases improves the balance and vibration resistance of the quadrilateral frame structure.

[0032] In a further technical solution, both ends of the crossbeam and the longitudinal beam are closed; and both the crossbeam and the longitudinal beam are positioned and connected to the corner connector at the closed ends via connectors.

[0033] With the above design, no connecting parts (such as screws) are exposed when the crossbeam and the longitudinal beam are fixed, reducing the probability of the connecting parts being bumped by the outside. At the same time, the crossbeam and the longitudinal beam, which have C-shaped cross sections, allow the connecting parts to be inserted normally into the closed end.

[0034] A further technical solution is that the outer side of the longitudinal beam, away from the C-shaped opening, is provided with multiple reserved holes.

[0035] The pre-drilled holes are designed to facilitate the connection of multiple movable base frames, especially when the control cabinet is long, allowing multiple movable base frames to be spliced ​​together. For example, when splicing adjacent movable base frames, the two longitudinal beams are pressed tightly together, and bolts are passed through the pre-drilled holes aligned in the two longitudinal beams to secure the adjacent movable base frames together. Additionally, if the control cabinet is heavy, the number of mounting components can be increased.

[0036] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0037] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0038] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0039] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0040] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0041] The working principle and advantages of this utility model are as follows:

[0042] In this invention, the four corner connectors are detachably installed at the four corners of the quadrilateral frame structure, respectively. Therefore, the two crossbeams and two longitudinal beams can be freely disassembled and assembled. If a beam cracks, only the cracked crossbeam and / or longitudinal beam needs to be replaced.

[0043] In this invention, since the two crossbeams and two longitudinal beams can be freely disassembled and assembled, users can freely replace the crossbeams and / or longitudinal beams of appropriate length to adapt to control cabinets of different sizes.

[0044] This invention uses a first support member and a second support member that move relative to each other to keep the lower surface of the quadrilateral frame structure at a set height from the ground. At the same time, once installed on an inclined ground, the second support member is directly driven to move relative to the first support member along the axial direction and is positioned after moving a set length, so as to increase or decrease the height of the support structure. Attached Figure Description

[0045] Appendix Figure 1 This is a top view of the movable base frame structure in an embodiment of this utility model;

[0046] Appendix Figure 2 This is a schematic diagram of the main structure of the movable base frame in an embodiment of this utility model;

[0047] Appendix Figure 3 This is a schematic diagram of the right side of the movable base frame in an embodiment of this utility model;

[0048] Appendix Figure 4 This is a schematic diagram of the longitudinal beam structure in an embodiment of the present utility model;

[0049] Appendix Figure 5 This is a schematic diagram of the mounting component structure in an embodiment of the present utility model;

[0050] Appendix Figure 6 This is a schematic diagram of the corner connector structure in an embodiment of the present utility model;

[0051] Appendix Figure 7 This is a schematic diagram of the fixing plate structure in an embodiment of the present utility model;

[0052] Appendix Figure 8 This is a schematic diagram of the rectangular card slot structure in an embodiment of the present utility model;

[0053] Appendix Figure 9 This is a schematic diagram of the insert block structure in an embodiment of the present utility model.

[0054] In the above attached diagrams: 1. Corner connector; 2. Crossbeam; 3. Longitudinal beam; 4. Mounting component; 5. First support component; 6. Second support component; 7. Threaded cylinder; 8. Threaded post; 9. Nut; 10. Rubber base; 11. Rectangular slot; 12. Positioning hole; 13. U-shaped groove; 14. Fixing plate; 15. Insert block; 16. Screw hole; 17. Matching protrusion; 18. Reserved hole. Detailed Implementation

[0055] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0056] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0057] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0058] See appendix Figures 1-9 As shown, a high-strength, balanced, and vibration-resistant movable base frame includes four corner connectors 1, two crossbeams 2, and two longitudinal beams 3. The two crossbeams 2 and two longitudinal beams 3 combine to form a quadrilateral frame structure. The four corner connectors 1 are detachably installed at the four corners of the quadrilateral frame structure, respectively. The corner connectors 1 are configured in the same plane to fix the end of an adjacent crossbeam 2 to the end of an adjacent longitudinal beam 3, so that the two crossbeams 2 and two longitudinal beams 3 are connected end-to-end. The upper surface of the quadrilateral frame structure is used to support a control cabinet. It also includes multiple mounting components 4; each mounting component 4 is respectively installed corresponding to each corner connector 1. The mounting component 4 is positioned and connected to the lower surface of the corner connector 1. The mounting component 4 includes a first support component 5 and a second support component 6. When the quadrilateral frame structure carries the control cabinet, one of the first support component 5 and the second support component 6 is positioned and connected to the lower surface of the corner connector 1, and the other is supported and positioned on the ground. The first support component 5 and the second support component 6 are coaxially arranged to form a support structure for keeping the lower surface of the quadrilateral frame structure at a set height from the ground. The second support component 6 is configured to move relative to the first support component 5 along the axis of the two and is positioned after moving a set length, so as to complete the action of increasing or decreasing the height of the support structure.

[0059] In this invention, the quadrilateral frame structure can be rectangular, square, or rhomboid.

[0060] In this utility model, when the first support member 5 and the second support member 6 cooperate to achieve height adjustment, the height adjustment can be achieved by threaded engagement; or by the engagement of a pin with multiple holes; or by hydraulic or pneumatic drive.

[0061] In this utility model, after the movement is set to a certain length, it should be noted that the set length must meet the requirement that after the first support member 5 and the second support member 6 move relative to each other, they can still move relative to each other. It is not possible for the first support member 5 and the second support member 6 to get stuck directly after moving relative to each other to the set length.

[0062] In this utility model, the four corner connectors 1 are detachably installed at the four corners of the quadrilateral frame structure, respectively. Therefore, the two crossbeams 2 and the two longitudinal beams 3 can be freely disassembled and assembled. Once a beam cracks, only the cracked crossbeam 2 and / or longitudinal beam 3 need to be replaced.

[0063] In this invention, since the two crossbeams 2 and the two longitudinal beams 3 can be freely disassembled and assembled, the user can freely replace the crossbeams 2 and / or longitudinal beams 3 of appropriate length to adapt to control cabinets of different sizes.

[0064] This utility model can maintain the lower surface of the quadrilateral frame structure at a set height with the ground by using the relative movement of the first support member 5 and the second support member 6. At the same time, once installed on an inclined ground, the second support member 6 is directly driven to move relative to the first support member 5 along the axial direction and is positioned after moving a set length, so as to complete the action of increasing or decreasing the height of the support structure.

[0065] Preferably, the first support member 5 includes a threaded cylinder 7 with threads on its inner wall, which is disposed on the lower surface of the corner connector 1; the second support member 6 includes a threaded post 8 whose outer wall is screwed into the inner wall of the threaded cylinder 7, the upper end of the threaded post 8 is inserted into the threaded cylinder 7, and a nut 9 is provided on the outer wall of the threaded post 8 at the lower end of the threaded cylinder 7. Under the action of external force, the nut 9 rotates around the axis of the threaded cylinder 7 to guide the threaded post 8 to move relative to the threaded cylinder 7 along the axial direction of the threaded cylinder 7.

[0066] The above design is used to better accomplish the action of increasing or decreasing the height of the support structure.

[0067] Specifically, the nut 9 is rotated manually. Then, under the action of external force, the nut 9 rotates around the axis of the threaded cylinder 7 to guide the threaded column 8 to move relative to the threaded cylinder 7 along the axial direction of the threaded cylinder 7.

[0068] Unlike the engagement of a pin with multiple holes, which sometimes requires manual assistance to lift the quadrilateral frame structure during operation, the engagement of the threaded cylinder 7 and the threaded column 8 offers greater stability and ease of operation, eliminating the need for manual assistance to lift the quadrilateral frame structure.

[0069] Preferably, a rubber base 10 is provided at the lower end of the threaded post 8. This design enhances the stability of the quadrilateral frame structure when supporting the control cabinet.

[0070] Preferably, the lower surface of the corner connector 1 is provided with a recessed rectangular groove 11, and the outer peripheral side of the corner connector 1 is provided with two positioning holes 12 communicating with the interior of the rectangular groove 11. The axes of the two positioning holes 12 are perpendicular to the outer peripheral side. The lower surface of the corner connector 1 is provided with a recessed U-shaped groove 13 with its opening facing downward. The outer peripheral side of the corner connector 1 with the positioning holes 12 is connected to one end of the U-shaped groove 13, and the other end of the U-shaped groove 13 extends to the inner wall of the rectangular groove 11. The axis of the U-shaped groove 13 is parallel to the side of the rectangular groove 11 in the width direction.

[0071] The above design allows for better fixation of the subsequent mounting component 4.

[0072] Preferably, on the outer peripheral side of the corner connector 1, the U-shaped groove 13 is located between the two positioning holes 12; and on the outer peripheral side of the corner connector 1, the lines connecting the points on the axes of the two positioning holes 12 and the points on the axis of the U-shaped groove 13 form a triangular structure.

[0073] With the above design, the subsequent fixing of the mounting component 4 can be ensured to be more secure through the cooperation of the two positioning holes 12 and the U-shaped groove 13.

[0074] Preferably, the mounting component 4 further includes a fixing plate 14. The upper surface of the fixing plate 14 is provided with two insert blocks 15 configured to be inserted into rectangular slots 11. The two insert blocks 15 are spaced apart. Each insert block 15 is provided with screw holes 16 corresponding to the positioning holes 12. The lower surface of the fixing plate 14 is fixedly connected to the upper end of the threaded cylinder 7. A matching protrusion 17 is provided between the two insert blocks 15 to match the U-shaped groove 13. When the upper surface of the fixing plate 14 is in contact with the lower surface of the corner connector 1, all the insert blocks 15 are inserted into the rectangular slots 11 until the screw holes 16 are aligned with the positioning holes 12, and the matching protrusion 17 is inserted into the U-shaped groove 13.

[0075] With the above design, the mounting component 4 can complete a stable and secure positioning action.

[0076] Specifically, when fixing the mounting component 4, the two inserts 15 are directly inserted into the rectangular slot 11. After the two inserts 15 are fully inserted, the matching protrusion 17 will also be embedded in the U-shaped groove 13. At this time, the screw hole 16 is aligned with the positioning hole 12. Then, the screw is gradually inserted into the aligned positioning hole 12 and screw hole 16 in the insertion order. In this state, the cooperation between the screw and the aligned positioning hole 12 and screw hole 16, as well as the cooperation between the matching protrusion 17 and the U-shaped groove 13, can better ensure the firmness and stability of the mounting component 4 when it is fixed.

[0077] It should be noted that the size of the fixing plate 14 is larger than the size of the rectangular slot 11 to prevent the fixing plate 14 from being too small, which would cause the mounting part 4 to wobble or increase the difficulty of connection. For example, when inserting the upper and lower parts, the fixing plate 14 cannot play an auxiliary positioning role, resulting in the screw hole 16 not being aligned with the positioning hole 12.

[0078] Preferably, both the crossbeam 2 and the longitudinal beam 3 are formed by bending sheet metal, and both the crossbeam 2 and the longitudinal beam 3 have a C-shaped cross-section; with the quadrilateral frame structure as a reference, the opening of the C-shape faces the inside of the quadrilateral frame structure.

[0079] With the above design, the crossbeams 2 and 3, both with C-shaped cross sections, can be made of metal, which greatly increases their strength. At the same time, their use in conjunction with the threaded post 8 (i.e., bolt) and the rubber base 10 improves the balance and vibration resistance of the quadrilateral frame structure.

[0080] Preferably, both ends of the crossbeam 2 and the longitudinal beam 3 are closed; and both the crossbeam 2 and the longitudinal beam 3 are positioned and connected to the corner connector 1 at the closed ends by connectors.

[0081] With the above design, no connecting parts (such as screws) are exposed when the crossbeam 2 and the longitudinal beam 3 are fixed, reducing the chance of the connecting parts being bumped by the outside. At the same time, the crossbeam 2 and the longitudinal beam 3, both of which have C-shaped cross sections, allow the connecting parts to be properly inserted into the closed end.

[0082] Preferably, the outer side of the longitudinal beam 3, away from the C-shaped opening, is provided with a plurality of reserved holes 18.

[0083] The pre-drilled holes 18 are designed to facilitate the connection of multiple movable base frames, especially when the control cabinet is long, allowing multiple movable base frames to be spliced ​​together. For example, when splicing adjacent movable base frames, the two longitudinal beams 3 are pressed tightly together, and bolts are passed through the pre-drilled holes 18 in the two longitudinal beams 3 to fix the adjacent movable base frames together. Additionally, if the control cabinet is heavy, the number of mounting components 4 can be increased.

[0084] Working principle:

[0085] First, the four corner connectors 1 are detachably installed at the four corners of the quadrilateral frame structure, one by one, using connectors (such as screws). That is, the screws are inserted from the C-shaped opening and then pass through the closed end of the crossbeam 2 or the longitudinal beam 3, so that the crossbeam 2 or the longitudinal beam 3 is fixed to the corner connectors 1.

[0086] Then, insert the two insert blocks 15 into the rectangular slot 11. When the two insert blocks 15 are fully inserted, the matching protrusion 17 will also be embedded in the U-shaped groove 13. At this time, the screw hole 16 is aligned with the positioning hole 12. Then, the screw is gradually inserted into the aligned positioning hole 12 and screw hole 16 in the insertion order. In this state, the cooperation between the screw and the aligned positioning hole 12 and screw hole 16, as well as the cooperation between the matching protrusion 17 and the U-shaped groove 13, can better ensure the firmness and stability of the mounting part 4 when it is fixed.

[0087] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-strength, balanced, and vibration-resistant movable base frame, characterized in that: It includes four corner connectors (1), two crossbeams (2), and two longitudinal beams (3); The two crossbeams (2) and the two longitudinal beams (3) are combined to form a quadrilateral frame structure. The four corner connectors (1) are detachably installed at the four corners of the quadrilateral frame structure. The corner connectors (1) are configured to fix the end of an adjacent crossbeam (2) to the end of a longitudinal beam (3) in the same plane so that the two crossbeams (2) and the two longitudinal beams (3) are connected end to end. The upper surface of the quadrilateral frame structure is used to support the control cabinet; It also includes multiple mounting components (4); Each of the mounting components (4) is respectively provided in a one-to-one correspondence with each of the corner connectors (1); The mounting component (4) is positioned and connected to the lower surface of the corner connector (1). The mounting component (4) includes a first support component (5) and a second support component (6). When the quadrilateral frame structure carries the control cabinet, one of the first support component (5) and the second support component (6) is positioned and connected to the lower surface of the corner connector (1), and the other is supported and positioned on the ground. The first support component (5) and the second support component (6) are coaxially arranged to form a support structure for keeping the lower surface of the quadrilateral frame structure at a set height from the ground. The second support component (6) is configured to move relative to the first support component (5) along the axis of the two and be positioned after moving a set length, so as to complete the action of increasing or decreasing the height of the support structure.

2. The high-strength, balanced, vibration-resistant movable base frame according to claim 1, characterized in that: The first support member (5) includes a threaded cylinder (7) with threads on its inner wall, which is disposed on the lower surface of the corner connector (1); The second support member (6) includes a threaded post (8) whose outer wall is screwed into the inner wall of the threaded cylinder (7). The upper end of the threaded post (8) is inserted into the threaded cylinder (7). The outer wall of the threaded post (8) is provided with a nut (9) at the lower end of the threaded cylinder (7). Under the action of external force, the nut (9) rotates around the axis of the threaded cylinder (7) to guide the threaded post (8) to move relative to the threaded cylinder (7) along the axial direction of the threaded cylinder (7).

3. The high-strength, balanced, vibration-resistant movable base frame according to claim 2, characterized in that: The lower end of the threaded column (8) is provided with a rubber base (10).

4. The high-strength, balanced, vibration-resistant movable base frame according to claim 2, characterized in that: The lower surface of the corner connector (1) is provided with a recessed rectangular slot (11), and the outer peripheral side of the corner connector (1) is provided with two positioning holes (12) that communicate with the inside of the rectangular slot (11). The axes of the two positioning holes (12) are perpendicular to the outer peripheral side. The lower surface of the corner connector (1) is provided with a recessed U-shaped groove (13) with its groove opening facing downward. The outer peripheral side of the corner connector (1) with positioning hole (12) is connected to one end of the U-shaped groove (13). The other end of the U-shaped groove (13) extends to the inner wall of the rectangular slot (11). The axis of the U-shaped groove (13) is parallel to the side of the rectangular slot (11) in the width direction.

5. The high-strength, balanced, vibration-resistant movable base frame according to claim 4, characterized in that: On the outer peripheral side of the corner connector (1), the U-shaped groove (13) is located between the two positioning holes (12); Furthermore, on the outer peripheral side of the corner connector (1), the line connecting the points on the axis of the two positioning holes (12) and the points on the axis of the U-shaped groove (13) forms a triangular structure.

6. The high-strength, balanced, vibration-resistant movable base frame according to claim 5, characterized in that: The mounting component (4) also includes a fixing plate (14), the upper surface of which is provided with two inserts (15) configured to be inserted into a rectangular slot (11), the two inserts (15) being spaced apart, and the inserts (15) being provided with screw holes (16) corresponding to the positioning holes (12). The lower surface of the fixing plate (14) is fixedly connected to the upper end of the threaded cylinder (7); A matching protrusion (17) is provided between the two inserts (15) to match the U-shaped groove (13); When the upper surface of the fixing plate (14) is in contact with the lower surface of the corner connector (1), all the inserts (15) are inserted into the rectangular slot (11) until the screw hole (16) is aligned with the positioning hole (12) and the matching protrusion (17) is inserted into the U-shaped groove (13).

7. The high-strength, balanced, vibration-resistant movable base frame according to claim 1, characterized in that: Both the crossbeam (2) and the longitudinal beam (3) are made of bent sheet metal, and both the crossbeam (2) and the longitudinal beam (3) have a C-shaped cross section. Based on the quadrilateral frame structure, the C-shaped opening faces the inside of the quadrilateral frame structure.

8. The high-strength, balanced, vibration-resistant movable base frame according to claim 7, characterized in that: The two ends of the crossbeam (2) and the longitudinal beam (3) are closed; Furthermore, both the crossbeam (2) and the longitudinal beam (3) are positioned and connected to the corner connector (1) at the closed end via connectors.

9. The high-strength, balanced, vibration-resistant movable base frame according to claim 7, characterized in that: The outer side of the longitudinal beam (3) and the side opposite to the C-shaped opening are provided with multiple reserved holes (18).

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