A bottom-lifting anti-rollover tooling and lifting method

Abstract

The present application relates to hoisting technology field, specifically to a kind of for bottom hoisting anti-rollover tool and hoisting method.A kind of for bottom hoisting anti-rollover tool, comprising: transverse beam, four transverse beams are sequentially vertically connected to form square frame, square frame can be clamped in the top end of cabinet;Side protection beam, side protection beam is fixed on each transverse beam, side protection beam is pasted on the side of cabinet;The intersection of adjacent two transverse beams is formed with the opening outward limit angle, lifting rope is extended to hoisting point after passing through limit angle from the bottom of cabinet.The limit angle is provided with limit plate, the limit plate limits the angle of lifting rope upward extension.The limit plate is deflected assembly, the inclination angle of limit plate relative to horizontal plane is adjustable, and the lifting rope is pasted on the upper surface of limit plate and extended upward.The hoisting device in prior art is implemented hoisting when to the electrical cabinet body, the technical problem that the danger of cabinet rollover is extremely likely to occur is solved.

Description

Technical Field

[0001] This invention relates to the field of hoisting technology, specifically to an anti-tipping fixture and hoisting method for bottom lifting. Background Technology

[0002] With the development of the electrical industry, electrical cabinets containing a large number of components are becoming increasingly common. The production, handling, and installation of these cabinets all involve hoisting issues. Some electrical cabinets, based on their structure, place hoisting devices such as lifting rings on both sides of the bottom, employing a bottom-hoisting method. This method involves passing the slings through the bottom lifting rings, then around the cabinet to the top hook position for hoisting. However, the arrangement of various components within the electrical cabinet causes a shift in the cabinet's center of gravity, leading to cabinet tilting and sling slippage during hoisting. This poses a significant risk of the cabinet tipping over, damaging the components inside and creating safety hazards for the hoisting personnel. Summary of the Invention

[0003] To address the technical problem that existing hoisting devices may cause electrical cabinets to tip over during hoisting, this invention provides an anti-tipping fixture and hoisting method for bottom lifting, thus solving the aforementioned technical problem. The technical solution of this invention is as follows:

[0004] An anti-tipping fixture for bottom lifting, used for lifting cabinets, includes:

[0005] There are four horizontal beams, which are connected vertically in sequence to form a square frame. The square frame can be clamped to the top of the cabinet.

[0006] Side protective beams are fixed on each of the transverse beams, and the side protective beams extend vertically and are attached to the side of the cabinet.

[0007] The intersection of two adjacent transverse beams forms an outward-facing limiting angle, and the lifting rope extends upward from the bottom of the cabinet through the limiting angle to the lifting point.

[0008] This invention relates to an anti-tipping fixture for bottom lifting. A square frame is formed by horizontal beams, with side guard beams fixed to the horizontal beams and attached to the sides of the cabinet. This fixture stably and evenly secures the top of the cabinet to be lifted. The intersection of two adjacent horizontal beams forms outward-facing limiting angles. When lifting the cabinet from the bottom, the lifting rope extends upwards from the bottom of the cabinet, passing through four limiting angles to the lifting point. These limiting angles limit the position of the lifting rope, preventing slippage. The lifting rope, acting on the fixture formed by the horizontal beams and side guard beams, acts on the top of the cabinet, effectively limiting the top of the cabinet and ensuring its balance, preventing the cabinet from tipping over.

[0009] According to one embodiment of the present application, a limiting plate is arranged at the limiting angle, which limits the angle of upward extension of the hoisting rope.

[0010] According to one embodiment of the present application, the limiting plate is assembled by deflection, and the inclination angle of the limiting plate relative to the horizontal plane is adjustable, and the hoisting rope extends upward on the upper surface of the limiting plate.

[0011] According to one embodiment of the present application, an angle plate is further included, and an angle scale is formed on the angle plate, and the inclination angle of the limiting plate is adjusted along the angle plate.

[0012] According to one embodiment of the present application, an angle groove is formed on the angle plate corresponding to the angle scale, a connecting shaft is assembled at the center point of the angle plate, the limiting plate is hinged on the connecting shaft through a connecting sleeve, and an end of the connecting shaft is assembled with a fastener, which can press the connecting sleeve to make the limiting plate clamped in the angle groove.

[0013] According to one embodiment of the present application, the fastener is a non-releasable screw, which includes a riveting sleeve and a screw, the screw passes through the riveting sleeve, a anti-releasing piece is arranged in the riveting sleeve to prevent the screw from being released, the riveting sleeve is fixedly assembled at the axial outer end of the connecting sleeve, and the screw is threadedly matched with the connecting shaft.

[0014] According to one embodiment of the present application, a connecting shaft is rotatably assembled at the center point of the angle plate, the limiting plate is assembled on the connecting shaft, a ratchet wheel is assembled on the connecting shaft, and the ratchet wheel is locked with a pawl.

[0015] According to one embodiment of the present application, the limiting plate and the angle plate are both assembled at the limiting angle through a fixed angle piece, a transition plate is further assembled on the fixed angle piece, the transition plate is below the limiting plate, and the upper end of the transition plate is close to the lower end of the limiting plate.

[0016] A hoisting method using the anti-rollover tool for bottom hoisting, the hoisting method comprising the following steps:

[0017] S1, calculating the inclination angle a of the limiting plate relative to the horizontal plane;

[0018] S2, adjusting the position of the limiting plate according to the inclination angle a;

[0019] S3, the hoisting rope extends upward from the lower end of the cabinet body to the four limiting angles, and then extends upward to the intersection at the hoisting point through the limiting plate;

[0020] S4, the hoisting device is connected with the hoisting rope at the hoisting point.

[0021] According to one embodiment of the present application, in step S1, calculating the inclination angle a of the limiting plate relative to the horizontal plane comprises:

[0022] S11, obtaining the diagonal length 2L of the top surface of the cabinet body;

[0023] S12, calculating the inclination angle a according to the lifting height H, a = arctan (H / L).

[0024] Based on the above technical solution, the present application can achieve the following technical effects:

[0025] 1. The anti-rollover tool of the present application forms a square frame by setting the transverse beams, and the side protection beams are also fixed on the transverse beams and attached to the sides of the cabinet body, so that the tool can be stably and balancedly buckled at the top end of the cabinet body to be lifted; the intersection of the two adjacent transverse beams forms a limiting angle opening outward, and when lifting the cabinet body from the bottom, the lifting rope extends upward to the lifting point after passing through the four limiting angles from the bottom of the cabinet body, and the position of the lifting rope can be limited by the limiting angle to prevent the lifting rope from sliding; the lifting rope acts on the top of the cabinet body through the tool formed by the transverse beams and the side protection beams, which can limit the top end of the cabinet body and ensure the balance of the top end of the cabinet body, so that the cabinet body is not prone to rollover;

[0026] 2. The anti-rollover tool of the present application sets a limiting plate at the limiting angle, which can limit the angle of the lifting rope extending upward to the lifting point, and by controlling the angle of the lifting rope extending upward, the height of the lifting point can be controlled, so that the cabinet body can be lifted more safely and stably; the limiting plate is specifically assembled by deflection, and the inclination angle relative to the horizontal plane is adjustable, so that the lifting rope can extend on the upper surface of the limiting plate, and the lifting point can be adjusted as needed to ensure the minimum lifting height, and the applicability is good;

[0027] 3. The anti-rollover tool of the present application forms an angle scale on the angle plate, and the limiting plate can be accurately adjusted in angle along the angle plate. After adjusting the inclination angle of the limiting plate, the position of the limiting plate can be fixed. Specifically, an angle groove can be provided on the angle plate, and a fastener can be used to press the limiting plate tightly in the angle groove, so that the limiting plate can be kept at the required inclination angle; when unlocking, the fastener can be unlocked, and the limiting plate can be axially away from the angle groove along the connecting shaft, and the limiting plate can be deflected. In addition, the position of the limiting plate can also be locked by using the structure of ratchet and pawl, and under the action of the ratchet and pawl, the limiting plate and the connecting shaft can be deflected in one direction; when unlocking, the pawl can be axially pulled out to make the pawl disengage from the ratchet, and the limiting plate and the connecting shaft can be deflected in the opposite direction;

[0028] 4. The anti-rollover tool of the present application, the limiting plate and the angle plate are arranged on the fixed corner piece, so that the modular structure can be realized, when disassembled, only the fixed corner piece needs to be disassembled, and the limiting plate and the angle plate on the fixed corner piece can be disassembled together; further, the transition plate is arranged, which can limit the extension direction of the lifting rope in cooperation with the limiting plate;

[0029] 5. The hoisting method of the present application, the inclination angle can be obtained according to the hoisting height and the size calculation of the top end of the cabinet, and the inclination angle of the limiting plate can be adjusted according to the inclination angle, the lifting rope extends upward along the limiting plate, and the lifting point can be intersected, the hoisting device is connected with the lifting rope at the lifting point, so that the required hoisting height is met. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structure schematic view of the anti-rollover tool of the first embodiment of the present application;

[0031] Figure 2 It is a structure schematic view of the combination of the transverse beam and the side protection beam;

[0032] Figure 3 It is a structure schematic view of the assembly of the limiting plate, the angle plate and the transition plate on the fixed corner piece;

[0033] Figure 4 It is a structure schematic view of the cooperation of the limiting plate, the angle plate and the transition plate;

[0034] Figure 5 It is Figure 4 the enlarged view of A part;

[0035] Figure 6 It is Figure 4 the explosion view of the structure shown;

[0036] Figure 7 It is a structure schematic view of the assembly of the transition plate on the fixed corner piece;

[0037] Figure 8 It is a state view of the anti-rollover tool assembled on the top end of the cabinet;

[0038] Figure 9 It is a principle view of calculating the inclination angle;

[0039] Figure 10 It is a structure schematic view of the cooperation of the limiting plate, the angle plate and the transition plate in the second embodiment of the present application;

[0040] Figure 11 It is a structure schematic view of the cooperation of the limiting plate, the angle plate and the transition plate from another perspective;

[0041] In the figure: 1-transverse beam; 2-side protection beam; 3-limiting angle; 4-limiting plate; 41-connecting sleeve; 5-angle plate; 51-angle scale; 52-angle slot; 53-connecting shaft; 61-ratchet wheel; 62-ratchet pawl; 621-rotation shaft; 7-fastener; 8-fixed angle piece; 81-long hole; 9-transition plate; 91-shaft sleeve; 100-cabinet body. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0043] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of the features, steps, operations, devices, components and / or combinations thereof.

[0044] Unless specifically stated otherwise, the relative arrangements of the components and steps illustrated in these embodiments and the numerical expressions and values set forth herein are not limiting of the scope of the present application. It should be understood that the various parts of the drawings are not necessarily drawn to scale, and that, for the purpose of convenience and clarity, not all components can be shown in a given figure. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but rather can be assumed to be known by those of ordinary skill in the art. In the examples shown and discussed herein, any specific values should be interpreted as merely illustrative, and not as a limitation on the scope of the exemplary embodiments. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0045] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or positional relationship are generally based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0046] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0047] In addition, it should be noted that the use of the words "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore it cannot be understood as a limitation on the scope of protection of the present application.

[0048] Embodiment one

[0049] As Figures 1-9 shown, the present embodiment provides a side overturning prevention tool for bottom lifting, for lifting the cabinet 100, the side overturning prevention tool includes four transverse beams 1 and a side protection beam 2, the four transverse beams 1 are connected vertically in sequence to form a square frame, the square frame can be clamped at the top end of the cabinet 1, the side protection beam 2 is fixed on the transverse beam 1, the side protection beam 2 extends vertically and is attached to the side of the cabinet 100. The length of the transverse beam 1 is greater than the length of the top end of the cabinet 100, the adjacent transverse beams 1 intersect and form a limiting angle 3 with an opening outward at the intersection thereof, during lifting, the lifting ropes extend upward from the bottom end of the cabinet 100, the four free ends of the lifting ropes pass through the four limiting angles 3 respectively, and then extend upward to the lifting point.

[0050] The transverse beams 1 can be hollow square tubes, and a plurality of connecting holes are arranged on the transverse beams 1. Adjacent transverse beams 1 are vertically stacked and fixed by screw-nut combination penetrating the stacking position of the adjacent transverse beams 1. Four transverse beams 1 are vertically fixed and connected to form a square frame.

[0051] As a preferred technical solution of the embodiment, the square frame has a symmetrical structure. Two parallel transverse beams 1 in one group are arranged on the upper surfaces of two parallel transverse beams 1 in another group, and then fixed by screw-nut combination. When the square frame formed by the transverse beams 1 is buckled on the top end of the cabinet 100, the two parallel transverse beams 1 in the upper group are supported by the top surface of the cabinet 100, and the outer sides of the two transverse beams 1 are in the same plane as the outer side of the cabinet 100. The inner sides of the two parallel transverse beams 1 in the other group are attached to the outer side of the cabinet 100 close to the top end.

[0052] The side protection beams 2 are arranged on the transverse beams 1 and perpendicular to the transverse beams 1. When the square frame formed by the transverse beams 1 is buckled on the top end of the cabinet 100, the side protection beams 2 vertically extend and are attached to the side of the cabinet 100.

[0053] As a preferred technical solution of the embodiment, the side protection beams 2 are arranged on each of the transverse beams 1. For the two parallel transverse beams 1 in the upper group, the side protection beams 2 thereon can be vertically fixed on the outer sides of the transverse beams 1. For the two parallel transverse beams 1 in the lower group, the side protection beams 2 thereon can be vertically fixed on the lower surfaces of the transverse beams 1.

[0054] The two adjacent transverse beams 1 are vertically intersected and extended to form limiting corners 3 with openings outward. The limiting corners 3 are right angles. The lifting ropes can extend upward from the bottom end of the cabinet 100 to form four free ends. The four free ends of the lifting ropes pass through the four limiting corners 3 and then gather upward at the lifting point. The limiting corners 3 can limit the lifting ropes to prevent the lifting ropes from sliding relative to the cabinet 100.

[0055] In order to limit the extension angle of the lifting ropes above the cabinet 100, a limiting plate 4 is arranged at the limiting corner 3. The limiting plate 4 is arranged by deflection. The limiting plate 4 is inclined inward toward the upper surface of the cabinet 100. The lifting ropes can extend on the upper surface of the limiting plate 4 to control the lifting point at the required lifting height.

[0056] In order to accurately control the inclination angle of the limiting plate 4 relative to the horizontal plane, an angle plate 5 is arranged corresponding to each limiting plate 4. The angle plate 5 is fixedly arranged at the limiting corner 3. The angle plate 5 is formed with an angle scale 51. The limiting plate 4 can be flipped along the angle scale 51.

[0057] As the preferred technical scheme of the embodiment, since the ropes are all turned inward, the angle plate 5 can be set to 90 degrees, and the inward inclination angle of the limiting plate 4 can be controlled.

[0058] As the preferred technical scheme of the embodiment, the limiting plate 4 is deflected from the side of the angle plate 5 with the angle scale 51, so that the angle of the angle plate 5 can be accurately adjusted.

[0059] After the inclination angle of the limiting plate 4 is adjusted, in order to fix the position of the limiting plate 4, a locking structure can be provided. In the embodiment, a connecting shaft 53 is arranged at the center of the angle plate 5, and the limiting plate 4 is deflectably arranged on the connecting shaft 53. When the limiting plate 4 is adjusted to the position, the limiting plate 4 is pressed on the angle plate 5, and the locking is realized.

[0060] As the preferred technical scheme of the embodiment, the lower end of the limiting plate 4 is connected with a connecting sleeve 41, the limiting plate 4 is deflectably arranged on the connecting shaft 53 through the connecting sleeve 41, the end of the connecting shaft 53 away from the angle plate 5 is connected with a fastener 7, and the fastener 7 can be fastened on the connecting shaft 53 while pressing the limiting plate 4. Further preferably, the end of the connecting shaft 53 away from the angle plate 5 is formed with an internal thread, the fastener 7 can be a non-releasable screw, the fastener 7 includes a riveting sleeve and a screw, the screw passes through the riveting sleeve, the riveting sleeve is provided with an anti-disengagement piece to prevent the screw from disengaging, the riveting sleeve is fixedly arranged at the axial outer end of the connecting sleeve 53, and the screw is threadedly connected with the connecting shaft 53. When the screw is tightened, the screw can press the riveting sleeve, and then press the connecting sleeve 41, so that the limiting plate 4 cannot be deflected; when the inclination angle of the limiting plate 4 needs to be adjusted, the screw is loosened, the pressing of the connecting sleeve 41 is released, and the limiting plate 4 can be deflected relative to the connecting shaft 53.

[0061] As the preferred technical scheme of the embodiment, in order to ensure the locking of the position of the limiting plate 4, the angle plate 5 is provided with an angle groove 52 corresponding to the angle scale 51, the width of the angle groove 52 is adapted to the thickness of the limiting plate 4, when the angle is adjusted, the limiting plate 4 can be clamped into the angle groove 52, and then the position of the limiting plate 4 can be stably fixed by the action of the fastener 7. When adjusting, the screw is loosened, the limiting plate 4 is axially moved, the limiting plate 4 is disengaged from the angle groove 52, the limiting plate 4 is deflected, the inclination angle of the limiting plate 4 is adjusted, and then the locking is performed.

[0062] In order to ensure the integrity of the structure, the limiting plate 4 and the angle plate 5 are assembled on the fixed corner piece 8. When assembling, the limiting plate 4 and the angle plate 5 can be assembled on the fixed corner piece 8 to form a module structure, and then the fixed corner piece 8 is assembled on the transverse beam 1 at the limiting corner 3. The fixed corner piece 8 can be provided as a right-angle fixed piece with an upper flange. The upper flange of the fixed corner piece 8 can be attached to the upper surface of the transverse beam 1 above, and the two right-angle surfaces can be attached to the outer side surface of the transverse beam 1. Long holes 81 are formed on the two right-angle surfaces, which can be conveniently fixed with the transverse beam 1. Preferably, a connecting hole is also opened on the upper flange, which can be fixed with the transverse beam 1.

[0063] In order to ensure the stability of the lifting rope to the limiting plate 4, a transition plate 9 is further provided on the fixed corner piece 8. The transition plate 9 is provided opposite to the right angle of the fixed corner piece 8, and the upper end of the transition plate 9 is close to the lower end of the limiting plate 4.

[0064] As a preferred technical solution of the embodiment, the upper end of the transition plate 9 forms a shaft sleeve 91, which can be sleeved on the connecting shaft 53. Correspondingly, the lower end of the limiting plate 4 is provided with two connecting sleeves 41, which are axially spaced apart. After assembly, the shaft sleeve 91 is located between the two connecting sleeves 41 in the axial direction, and an axial gap is formed between the shaft sleeve 91 and the two connecting sleeves 41 on both sides, so as to facilitate the axial sliding of the limiting plate 4 and make the limiting plate 4 disengage from the angle groove 52.

[0065] The embodiment also provides a lifting method using the aforementioned anti-rollover tool for bottom lifting, which comprises the following steps:

[0066] S1, calculating the inclination angle a of the limiting plate 4 relative to the horizontal plane;

[0067] S2, adjusting the position of the limiting plate 4 according to the inclination angle a;

[0068] S3, the lifting rope extends upward from the lower end of the cabinet 100 to the four limiting corners 3, and then extends upward to the intersection at the lifting point through the limiting plate 4;

[0069] S4, the lifting device is connected with the lifting rope at the lifting point.

[0070] In step S1, calculating the inclination angle a of the limiting plate relative to the horizontal plane comprises:

[0071] S11, obtaining the diagonal length 2L of the top surface of the cabinet 100;

[0072] S12, calculating the inclination angle a according to the lifting height H, a = arctan (H / L).

[0073] As Figure 9As shown, during the calculation, the lengths of the long and wide sides of the top surface of cabinet 100 can be measured and obtained. Then, the diagonal length of the top surface of cabinet 100 is calculated to be 2L. The lifting point O must be located on the perpendicular bisector of the diagonal. Combined with the required lifting height H, the calculation is performed using trigonometric functions.

[0074] tanα=(H / L)

[0075] It can be concluded that

[0076] α = arctan(H / L)

[0077] The tilt angle α of the limiting plate 4 relative to the horizontal plane can be calculated using the above formula.

[0078] Although there is a positional difference between the lifting position of the rope after passing the limiting angle 3 and the top vertex of the cabinet 100, once the angle of the limiting plate 4 is determined, the actual lifting point of the rope extending upward along the limiting plate 4 will be slightly higher than the required lifting point O, but the error is small and meets the requirement that the lifting height is not less than H. Furthermore, the error can be minimized by selecting a smaller square tube for the transverse beam 1, such as a square tube with a side length less than 0.2m.

[0079] Example 2

[0080] like Figures 10-11 As shown, this embodiment is basically the same as Embodiment 1, except that the locking structure is different. In this embodiment, the locking structure is a ratchet and pawl structure, and the position of the limiting plate 4 is locked by the ratchet and pawl.

[0081] Specifically, a connecting shaft 53 is mounted at the center of the angle plate 5. The connecting shaft 53 can rotate relative to the angle plate 5. The limiting plate 4 is mounted on the connecting shaft 53, and the ratchet 61 is also mounted on the connecting shaft 53. The ratchet 61 and the pawl 62 engage and lock together. Under the action of the pawl 62 and the ratchet 61, the limiting plate 4 can deflect upward in one direction only, but cannot deflect downward. Thus, when the lifting rope extends along the upper surface of the limiting plate 4, the limiting plate 4 can provide support and limit the lifting rope.

[0082] As a preferred embodiment, the limiting plate 4 and ratchet 61 are located on opposite sides of the angle plate 5. A pawl 62 is mounted on the angle plate 5 and is rotatably mounted on the rotating shaft 621, allowing the pawl 62 to move axially along the rotating shaft 621. A spring (not shown in the figure) can be fitted onto the rotating shaft 621. In the initial state, the pawl 62 can approach the angle plate 5 under the action of the spring and lock with the ratchet 61. When it is necessary to deflect the limiting plate 4 downwards, the pawl 62 can slide axially against the spring's action, causing the pawl 62 and ratchet 61 to be axially misaligned. At this time, the position of the limiting plate 4 can be adjusted.

[0083] As a preferred technical solution of the embodiment, the angle plate 5 can not be provided with the angle groove 52. The connecting sleeve 41 of the limiting plate 4 can be fixedly connected with the connecting shaft 53. The shaft sleeve 91 on the transition plate 9 can relatively rotate with the connecting shaft 53.

[0084] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A bottom-lifting anti-tipping fixture for lifting cabinet (100), characterized in that, include: The transverse beams (1) consist of four beams, which are connected vertically in sequence to form a square frame. The square frame can be clamped to the top of the cabinet (100). Side protection beam (2), each of the transverse beams (1) is fixed with the side protection beam (2), the side protection beam (2) extends vertically and is attached to the side of the cabinet (100); The intersection of two adjacent transverse beams (1) forms a limiting angle (3) with an outward opening. The lifting rope extends upward from the bottom of the cabinet (100) through the limiting angle (3) to the lifting point. A limiting plate (4) is provided at the limiting angle (3), and the limiting plate (4) limits the angle at which the suspension rope extends upward; The limiting plate (4) is deflected and the tilt angle of the limiting plate (4) relative to the horizontal plane is adjustable. The suspension rope extends upward along the upper surface of the limiting plate (4). It also includes an angle plate (5) on which angle scales (51) are formed, and the limiting plate (4) adjusts the tilt angle along the angle plate (5); Angle grooves (52) are formed on the angle plate (5) corresponding to the angle scale (51). A connecting shaft (53) is mounted at the center point of the angle plate (5). The limiting plate (4) is hinged to the connecting shaft (53) through a connecting sleeve (41). A fastener (7) is mounted at the end of the connecting shaft (53). The fastener (7) can press the connecting sleeve (41) to make the limiting plate (4) lock in the angle groove (52). Alternatively, the connecting shaft (53) is rotatably mounted at the center point of the angle plate (5). The limiting plate (4) is mounted on the connecting shaft (53) as it rotates. A ratchet (61) is mounted on the connecting shaft (53). The ratchet (61) and the pawl (62) cooperate to lock.

2. The anti-tipping fixture for bottom lifting according to claim 1, characterized in that, The fastener (7) is a non-detachable screw. The fastener (7) includes a rivet sleeve and a screw. The screw passes through the rivet sleeve. The rivet sleeve is provided with an anti-detachment component to prevent the screw from coming out. The rivet sleeve is fixedly assembled to the axial outer end of the connecting sleeve (41). The screw is threadedly engaged with the connecting shaft (53).

3. A bottom-lifting anti-tipping fixture according to any one of claims 1 or 2, characterized in that, The limiting plate (4) and the angle plate (5) are both assembled at the limiting angle (3) by fixing corner piece (8). A transition plate (9) is also assembled on the fixing corner piece (8). The transition plate (9) is below the limiting plate (4), and the upper end of the transition plate (9) is close to the lower end of the limiting plate (4).

4. A lifting method, characterized in that, The anti-tipping fixture for bottom lifting according to any one of claims 1-3, the lifting method comprising the following steps: S1. Calculate the tilt angle α of the limiting plate (4) relative to the horizontal plane; S2. Adjust the position of the limiting plate (4) according to the tilt angle α; S3. The lifting rope extends upward from the lower end of the cabinet (100) to the four limiting angles (3), and then extends upward through the limiting plate (4) to intersect at the lifting point; S4. The lifting device is connected to the lifting rope at the lifting point.

5. A lifting method according to claim 4, characterized in that, In step S1, calculating the tilt angle α of the limiting plate (4) relative to the horizontal plane includes: S11. Obtain the diagonal length 2L of the top surface of the cabinet (100); S12. Calculate the tilt angle α based on the lifting height H. .

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