Device capable of stably lifting equipment in narrow space

Abstract

The invention provides a device capable of stably lifting equipment in a narrow space, which belongs to the technical field of equipment hoisting and comprises a base, a lifting assembly, a translation assembly and a supporting assembly. The base is provided with walking wheels. The bottom of the lifting assembly is fixedly connected with the base. A lifting platform is arranged on the top of the lifting assembly. The translation assembly is arranged on the lifting platform; the translation assembly comprises a translation platform slidably connected with the lifting platform, and the sliding direction of the translation platform is perpendicular to the walking direction of the base. The supporting assembly is arranged at the bottom of the base and used for fixing the position of the base. The supporting assembly comprises a foldable ground supporting plate, the two ends of the ground supporting plate can be folded downwards, and the cobblestones are prevented from sliding out of the position below the ground supporting plate. Through the structure that the two ends of the foldable ground supporting plate are folded downwards, the contact area between the foldable ground supporting plate and the cobblestone ground can be increased, cobblestones are limited from sliding out of the ground supporting plate, and the problems that the cobblestone ground on the bottom layer of the transformer substation is smooth, gaps are large, and consequently equipment supporting is not stable, and inclination and shaking are likely to happen are solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of equipment hoisting, and more particularly to a device capable of stably lifting equipment in a narrow space. BACKGROUND

[0002] In the operation and maintenance work of the power system, the periodic maintenance and component replacement of various types of equipment inside the substation directly relate to the stable operation of the power grid. Among them, the bottom fan of the substation as an important heat dissipation component needs to be disassembled and maintained or replaced after long-term operation, but such fans are usually installed on the bottom layer support of the substation, not only the overall height is low, and the operation gap between the fan and the surrounding equipment, wall or ground is extremely small, the traditional large lifting equipment cannot enter the operation area due to its large size, and manual lifting has the problems of low efficiency, poor safety and easy damage to the equipment. Therefore, a special device suitable for narrow space, small size and stable lifting is urgently needed to meet the demand for precise and safe lifting of equipment during the disassembly of the bottom fan of the substation, and to ensure the efficient development of operation and maintenance work. The existing device has the following defects: the bottom layer of the substation is usually paved with a layer of goose pebbles with a thickness of 5-10 cm to meet the needs of drainage, anti-skid and insulation. Such goose pebbles are mostly circular or elliptical, with smooth surface and large gap between particles. When using the existing small lifting equipment to disassemble the fan, the bottom of the equipment contacts the goose pebble ground, and since the goose pebble cannot provide a flat and stable support surface, the goose pebble below the stress point is prone to rolling or displacement under the condition that the equipment bears the weight of the fan, resulting in tilting and shaking of the equipment. Not only is it difficult to form a stable support state, but also it is impossible to realize precise positioning and lifting of the fan, which may cause accidents such as equipment tipping over and fan falling, seriously affecting the safety and reliability of operation and maintenance work. SUMMARY

[0003] The purpose of the present application is to provide a device capable of stably lifting equipment in a narrow space, which aims to solve the problem of poor stability of the existing device on the goose pebble ground.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a device capable of stably lifting equipment in a narrow space, comprising: a base with walking wheels; a lifting assembly fixedly connected to the bottom of the base; the top of the lifting assembly is provided with a lifting platform; a translation assembly arranged on the lifting platform; the translation assembly comprises a translation platform in sliding connection with the lifting platform, and the sliding direction of the translation platform is perpendicular to the walking direction of the base; and Support assemblies are arranged at the bottom of the base to fix the position of the base; the support assemblies comprise foldable ground support plates, both ends of which can be folded downward to avoid cobblestones from sliding out from below the ground support plates.

[0005] In a possible implementation, the lifting assembly comprises: A driving mechanism fixedly connected to the base; and A folding mechanism vertically arranged; the bottom of the folding mechanism is connected to the driving mechanism, and the top of the folding mechanism is hingedly connected to the lifting platform; the driving mechanism is used to drive the folding mechanism to fold or unfold, so as to drive the lifting platform to lift or lower.

[0006] In a possible implementation, the driving mechanism comprises: A first motor fixedly connected to the base; and A first screw rod rotationally connected to the base and horizontally arranged; two threads with opposite directions are arranged on the first screw rod; the first motor is fixedly connected to the first screw rod.

[0007] In a possible implementation, the folding mechanism comprises: A first folding arm, one end of which is hingedly connected to the middle position of the lifting platform, and the other end of which is threadedly connected to one end of the first screw rod; and A second folding arm, one end of which is hingedly connected to the middle position of the lifting platform, and the other end of which is hingedly connected to the other end of the first screw rod threadedly connected to the first screw rod; the first folding arm and the second folding arm are symmetrically arranged about the middle position of the lifting platform.

[0008] In a possible implementation, the translation assembly comprises: A second motor fixedly connected to the lifting platform; and A second screw rod threadedly matched with the translation platform; the second motor is fixedly connected to the second screw rod.

[0009] In a possible implementation, four support assemblies are arranged at the four corner positions of the base; the support assemblies comprise lifting mechanisms fixedly connected to the lower surface of the base, and the ground support plates are fixedly connected to the bottom of the lifting mechanisms.

[0010] In a possible implementation, the ground support plates comprise: A first support plate fixedly connected to the lifting mechanism; and A plurality of second support plates hingedly connected to the first support plate.

[0011] In a possible implementation, the support assembly further comprises a plurality of telescopic members, each of the telescopic members corresponding to one of the second support plates; one end of each of the telescopic members is hingedly connected to one of the second support plates, and the other end of each of the telescopic members is hingedly connected to the lifting mechanism.

[0012] In a possible implementation, the top of the translation platform is fixedly connected with an air cushion.

[0013] In a possible implementation, the top of the air cushion is fixedly connected with a protective plate.

[0014] The device for stably lifting equipment in a narrow space provided by the application has the advantages that, compared with the prior art, the device for stably lifting equipment in a narrow space is provided, the walking wheels of the base are designed to facilitate flexible movement of the device in a narrow substation bottom space, the problem that a traditional large lifting equipment cannot enter an operation area due to a large size is solved, and the device can accurately reach a fan maintenance position. The lifting assembly realizes stable lifting of the equipment through the lifting platform, replaces a manual lifting mode with low efficiency and poor safety, avoids damage to the fan caused by manual operation, and meets lifting requirements during fan disassembly and maintenance.

[0015] The translation platform of the translation assembly can slide in a direction perpendicular to the walking direction of the base, can finely adjust the position of the fan after the equipment reaches a general position, is suitable for an operation scene in which a gap between the fan and surrounding equipment or walls is extremely small, and improves positioning accuracy. The foldable support plates of the support assembly have a structure in which both ends are folded downward, can increase a contact area with the cobblestone ground, and limit the cobblestone from sliding out from below the support plates, effectively solve the problems of unstable support of the equipment, easy tilting and shaking of the equipment caused by a smooth and large gap of the cobblestone ground at the bottom of the substation, avoid safety accidents such as equipment tipping and fan falling, and guarantee safety and reliability of operation and maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0017] Figure 1 The structure schematic diagram of the device for stably lifting equipment in a narrow space provided by the embodiment of the application is shown in the figure. Figure 2 The structure schematic diagram of the lifting assembly and the translation assembly provided by the embodiment of the application is shown in the figure. Figure 3A structural schematic view of a base and a support assembly provided by an embodiment of the present application is shown in the figure. Figure 4 A structural schematic view of a support assembly and a first ground support plate provided by an embodiment of the present application is shown in the figure. Figure 5 A structural schematic view of a second ground support plate provided by an embodiment of the present application is shown in the figure. Figure 6 A structural schematic view of a third ground support plate provided by an embodiment of the present application is shown in the figure.

[0018] Explanation of reference signs: 1, base; 11, walking wheel; 2, lifting assembly; 21, lifting platform; 22, driving mechanism; 221, first motor; 222, first lead screw; 23, folding mechanism; 231, first folding arm; 232, second folding arm; 3, translation assembly; 31, translation platform; 32, second motor; 33, second lead screw; 4, support assembly; 41, lifting mechanism; 42, first support plate; 43, second support plate; 44, telescopic member; 5, air cushion; 6, protection plate. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0020] Reference Figures 1 to 6 The device for stably lifting equipment in a narrow space provided by the present application will be described. The device for stably lifting equipment in a narrow space comprises a base 1, a lifting assembly 2, a translation assembly 3 and a support assembly 4.

[0021] The base 1 is provided with a walking wheel 11. The bottom of the lifting assembly 2 is fixedly connected with the base 1; the top of the lifting assembly 2 is provided with a lifting platform 21. The translation assembly 3 is arranged on the lifting platform 21; the translation assembly 3 comprises a translation platform 31 which is in sliding connection with the lifting platform 21, and the sliding direction of the translation platform 31 is perpendicular to the walking direction of the base 1. The support assembly 4 is arranged at the bottom of the base 1 and is used for fixing the position of the base 1; the support assembly 4 comprises foldable ground support plates, and the two ends of the ground support plates can be folded downward to avoid pebbles from sliding out from the bottom of the ground support plates.

[0022] When the device lifting operation is performed in a narrow space, first, the device is moved to the target operation position by the walking wheels 11 of the base 1, and the device is ensured to be below the device to be lifted (such as the bottom fan of the substation) or in the appropriate operation range. Then, the support assembly 4 at the bottom of the base 1 is started, the both ends of the foldable ground support plate are folded downward and fully contact with the ground, the contact area with the ground is increased through the ground support plate, and the folding structure is used to limit the rolling displacement of the underlying cobblestones, so as to fix the position of the base 1 and avoid the inclination or shaking of the device in the subsequent operation.

[0023] Then, the lifting assembly 2 is started, the bottom of the lifting assembly 2 is fixed with the base 1, and the lifting platform 21 at the top is lifted or lowered in the vertical direction under the driving of the lifting assembly 2, until the lifting platform 21 is adjusted to the height suitable for the device to be lifted. Finally, according to the specific position requirement of the device to be lifted, the translation assembly 3 arranged on the lifting platform 21 is started. Since the translation platform 31 is slidingly connected with the lifting platform 21 and the sliding direction is perpendicular to the walking direction of the base 1, the translation assembly 3 can drive the translation platform 31 to slide in the direction perpendicular to the walking direction of the base 1, so as to accurately move the translation platform 31 to the position directly below the device to be lifted, and complete the receiving and subsequent stable lifting operation of the device.

[0024] The overall structure of the device does not use the complex frame of traditional large lifting equipment, and the design of the base 1 with the walking wheels 11 facilitates flexible movement in narrow gaps, meeting the access requirements of narrow space operation. The cooperation of the translation assembly 3 and the lifting assembly 2 realizes the two-dimensional adjustment of the device in the "vertical lifting + translation perpendicular to the walking direction", greatly improving the accuracy of device positioning and avoiding the inefficiency and errors of manual adjustment. After the both ends of the ground support plate are folded downward, the contact area with the ground is increased, the weight load of the device and the device to be lifted is dispersed, and the underlying cobblestones are physically blocked to prevent the device from being supported due to the rolling of the cobblestones, solving the problem that the cobblestone ground cannot provide a stable support surface and reducing the safety risk of device inclination and equipment falling. In addition, the components have clear division of labor and stable connection, and the overall structure is compact, which guarantees the safety and accuracy of operation, and at the same time, the flexibility and efficiency of narrow space operation are taken into account, which is especially suitable for the maintenance and disassembly scene of small devices such as the bottom fan of the substation.

[0025] In a possible implementation, the lifting assembly 2 includes a driving mechanism 22 and a folding mechanism 23.

[0026] The driving mechanism 22 is fixedly connected to the base 1. The folding mechanism 23 is vertically arranged; the bottom of the folding mechanism 23 is connected with the driving mechanism 22, and the top is hingedly connected with the lifting platform 21; and the driving mechanism 22 is used to drive the folding mechanism 23 to fold or unfold, so as to drive the lifting platform 21 to lift.

[0027] The driving mechanism 22 provides accurate power for the folding mechanism 23, which is vertically arranged and has the bottom connected to the driving mechanism 22 and the top hinged to the lifting platform 21. The folding or unfolding movement of the folding mechanism 23 can directly drive the lifting platform 21 to stably lift. Compared with the traditional telescopic lifting structure, the folding design can reduce the occupied space of components, better adapt to narrow working scenes, and avoid the lifting deviation caused by the gap accumulation of the multi-section telescopic structure. The driving mechanism 22 can control the unfolding degree of the folding mechanism 23 through stable output power, thereby accurately adjusting the height of the lifting platform 21, meeting the height adaptation of the equipment to be lifted under different maintenance requirements, and solving the problems of low efficiency and poor precision of manual height adjustment.

[0028] The lifting assembly 2 is compact in structure and fixedly connected to the base 1, and the overall stress conduction is more direct. When bearing the weight of the equipment, the structure can remain stable to avoid platform shaking caused by component loosening during lifting, further ensuring the safety and reliability of equipment lifting in narrow spaces. The supporting assembly 4 and the translation assembly 3 form a synergy to improve the operation adaptability of the device in narrow and complex ground environments.

[0029] In one possible implementation, the driving mechanism 22 includes a first motor 221 and a first lead screw 222.

[0030] The first motor 221 is fixedly connected to the base 1. The first lead screw 222 is rotationally connected to the base 1 and horizontally arranged. The first lead screw 222 is provided with two sections of threads in opposite directions. The first motor 221 is fixedly connected to the first lead screw 222.

[0031] The first motor 221 provides a stable power source for driving and is fixedly connected to the horizontally arranged first lead screw 222, which can directly drive the first lead screw 222 to accurately rotate. The two sections of threads in opposite directions on the first lead screw 222 can make the components of the folding mechanism 23 cooperating with them move in opposite directions synchronously when the lead screw rotates, avoiding the folding mechanism 23 jamming or deviation caused by the asynchronous movement of components when driven by a traditional single-thread lead screw, ensuring the smooth and symmetrical unfolding / folding process of the folding mechanism 23, and thereby realizing the uniform and accurate lifting of the lifting platform 21 in the vertical direction, effectively solving the pain point of high lifting height precision requirement of the equipment to be lifted in narrow spaces.

[0032] The horizontally arranged lead screw and motor combination structure is compact, does not need to occupy too much vertical space, and better meets the installation and operation requirements of narrow working scenes. At the same time, the motor-driven structure not only greatly improves the lifting adjustment efficiency and reduces the manual operation intensity, but also realizes the quantitative adjustment of the lifting height through the controllability of the motor, avoids the experience error in manual adjustment, and guarantees the consistency and reliability of each lifting operation.

[0033] In a possible implementation, the folding mechanism 23 comprises a first folding arm 231 and a second folding arm 232.

[0034] The first folding arm 231 is hingedly connected to the middle of the lifting platform 21 at one end and threadedly connected to one end of the first lead screw 222 at the other end. The second folding arm 232 is hingedly connected to the middle of the lifting platform 21 at one end and hingedly connected to the other end of the first lead screw 222 at the other end; the first folding arm 231 and the second folding arm 232 are symmetrically arranged about the middle of the lifting platform 21.

[0035] Such a symmetrical structure can ensure that the two folding arms move in opposite directions synchronously when the lead screw rotates, avoiding the jamming or deviation problems that may occur in asymmetric structures, making the unfolding and folding processes of the folding mechanism 23 more stable, and thus achieving uniform lifting of the lifting platform 21 in the vertical direction, meeting the requirements of the device for lifting stability. At the same time, the two folding arms symmetrically distributed can jointly bear the weight of the lifting platform 21 and the device, evenly distributing the load to two components, reducing the stress burden of a single folding arm, reducing the risk of deformation or damage caused by local overload, and prolonging the service life of the component.

[0036] In addition, this structure design does not require complex multi-section telescopic components, occupies less space in the folded state, can flexibly adapt to narrow working environments, is convenient to operate in the equipment installation gap, forms an efficient transmission system with the driving mechanism 22, ensures accurate and lossless power transmission, further guarantees the safety and reliability of the device during lifting, and provides stable support for the lifting operation of the device in a narrow space.

[0037] In a possible implementation, the translation assembly 3 comprises a second motor 32 and a second lead screw 33. The second motor 32 is fixedly connected to the lifting platform 21. The second lead screw 33 is threadedly connected to the translation platform 31; the second motor 32 is fixedly connected to the second lead screw 33. The second lead screw 33 is arranged perpendicularly to the first lead screw 222.

[0038] From the driving mode, the second motor 32 as a power source can provide stable and controllable power for translation adjustment, which not only greatly reduces the manual operation strength compared with manually pushing the translation platform 31, but also avoids the platform jamming or deviation caused by uneven force during manual adjustment, making the translation process smoother. At the same time, the motor drive can realize accurate control of the translation speed by controlling the rotation speed, and can flexibly adjust the moving speed according to the weight and volume of the device to be lifted, preventing the device from shaking or colliding with the surrounding components due to too fast movement, and further improving the operation safety.

[0039] From the transmission structure, the second screw rod 33 is designed in threaded cooperation with the translation platform 31, which converts the rotary motion of the motor into the linear motion of the translation platform 31. This transmission mode has high positioning accuracy and can realize quantitative adjustment of the translation distance. The staff can accurately control the moving distance of the translation platform 31 by setting the number of rotation of the motor, which solves the pain point of traditional manual adjustment depending on experience and easy to appear position deviation, and ensures that the translation platform 31 can accurately dock the bottom support point of the equipment to be lifted, meeting the high requirement of equipment horizontal position accuracy in narrow space.

[0040] In addition, the structure is complementary to the walking function of the base 1. The walking wheel 11 of the base 1 can realize coarse positioning of the whole device, and the translation assembly 3 is responsible for completing fine adjustment in the horizontal direction. The combination of the two makes the position adaptation of the device in the narrow space more flexible. Even if there is a slight deviation in the parking position of the whole device, it can be quickly corrected through the translation assembly 3 without repeatedly moving the base 1, which greatly improves the work efficiency. At the same time, the translation assembly 3 has a compact structure and does not occupy too much space, which can well adapt to the scene with small operation gap at the bottom of the substation, and cooperates with the lifting assembly 2 and the support assembly 4 to jointly build a complete work system of "stable support-precise lifting-flexible translation", which provides strong support for the safe and efficient lifting of equipment in narrow space.

[0041] In one possible implementation, four support assemblies 4 are provided and arranged at the four corner positions of the base 1; the support assembly 4 includes a lifting mechanism 41 fixedly connected to the lower surface of the base 1, and a ground support plate fixedly connected to the bottom of the lifting mechanism 41.

[0042] From the support stability, the design of four support assemblies 4 distributed at the four corners of the base 1 forms a symmetrical and balanced four-point support structure, which can more evenly distribute the weight of the device and the equipment to be lifted to the four corners of the base 1 compared with the traditional single-sided or two-point support, avoiding the tilting of the base 1 caused by local stress concentration. Especially on the cobblestone ground which is easy to roll, the four-point support can limit the displacement trend of the base 1 through multiple contact points, reducing the overall shaking caused by the sliding of the cobblestone under the single support point, laying a stable foundation for the subsequent equipment lifting and translation operation.

[0043] From the point of view of height adaptability and ground adhesion, the addition of the lifting mechanism 41 makes the height of the ground support plate adjustable. When the working ground has a slope or unevenly laid pebble thickness, the height of the lifting mechanism 41 in each of the four support assemblies 4 can be adjusted independently to ensure that the ground support plate is always in full contact with the ground, avoiding the situation where part of the support assembly 4 is suspended due to uneven ground, solving the problem that the traditional fixed-height support structure cannot adapt to uneven ground. This adjustability can also flexibly adapt to the height requirements of the base 1 in different working scenarios, such as when the base 1 needs to be raised to avoid ground obstacles, the lifting mechanism 41 can be quickly adjusted to improve the environmental adaptability of the device.

[0044] In addition, this structure cooperates with the folding function of the ground support plate: the lifting mechanism 41 adjusts the height of the ground support plate to adapt to the flatness of the ground, and the ground support plate increases the contact area and blocks the sliding of the pebbles after folding, both of which enhance the support effect from the two dimensions of "height adaptation" and "anti-skid fixation". At the same time, the four-corner distributed support assemblies 4 do not occupy additional space in the middle of the base 1, do not affect the installation and operation of the lifting assembly 2 and the translation assembly 3 on the base 1, ensure the compactness of the overall structure of the device, meet the volume requirements of narrow space operation, and further improve the function system of "stable support - precise operation".

[0045] In one possible implementation, the ground support plate includes a first support plate and a plurality of second support plates. The first support plate 42 is fixedly connected with the lifting mechanism 41. The plurality of second support plates 43 are hingedly connected with the first support plate 42.

[0046] From the point of view of support area and anti-skid effect, the hinged design of the plurality of second support plates 43 and the first support plate 42 allows the ground support plate to flexibly expand the contact area through the expansion of the second support plates 43. Compared with the traditional integrated ground support plate, the expanded second support plates 43 can significantly increase the contact range between the ground support plate and the ground, not only can more evenly distribute the weight load of the device and equipment, reducing the pressure on the pebbles at the single contact point, but also can physically block the pebbles in a larger range through the coverage of multiple second support plates 43, avoiding the support failure caused by the rolling of pebbles around the support point, especially suitable for the ground environment of dense and large gap pebble laying at the bottom of the substation, solving the problem that the traditional small-area ground support plate is easy to "sink" into the gap between the pebbles.

[0047] In terms of ground adaptation flexibility, the hinged structure enables the second support plate 43 to adjust the unfolding angle and state according to the distribution of the ground cobblestones. When encountering a convex cobblestone or local unevenness on the ground, the second support plate 43 can be rotated to fit the ground undulations, ensuring that each support plate can maintain effective contact with the ground, avoiding partial support plate suspension due to ground undulations, and further improving the overall ground fitting degree of the ground support plate. This adaptability does not require pre-treatment of the ground, significantly reducing the preparation time before operation, allowing the device to quickly form a stable support on complex cobblestone ground.

[0048] In one possible implementation, the support assembly 4 further comprises a plurality of telescopic members 44, one-to-one corresponding to the second support plates 43; one end of the telescopic member 44 is hinged to the second support plate 43, and the other end is hinged to the lifting mechanism 41. The lifting mechanism 41 and the telescopic member 44 are specifically hydraulic telescopic rods, the base of the lifting mechanism 41 is fixed on the lower surface of the base 1, and the piston rod protrudes downward by a portion. One end of the telescopic member 44 is hinged to the second support plate 43, and the other end is hinged to the protruding part of the piston rod of the lifting mechanism 41.

[0049] In terms of unfolding precision and operational convenience of the second support plate 43, the telescopic member 44 provides controllable driving force and limiting action for the rotation of the second support plate 43. The traditional hinged second support plate 43 needs to rely on manual adjustment of the unfolding angle, which is not only cumbersome to operate, but also prone to angle deviation due to improper force. The telescopic member 44 can accurately push or pull the second support plate 43 to rotate through its telescopic action, realizing quantitative control of the unfolding angle. The staff does not need to directly contact the ground support plate, but can control the telescopic amount of the telescopic member 44 to make each second support plate 43 unfold according to the preset angle, ensuring that the multiple second support plates 43 form a uniform support surface after unfolding, avoiding excessive unfolding or insufficient unfolding of some support plates due to manual adjustment errors, and affecting the overall support effect.

[0050] In terms of stability and carrying capacity of the support structure, the telescopic member 44 is hinged to the second support plate 43 and the lifting mechanism 41, forming a stable triangular support structure of "lifting mechanism 41-telescopic member 44-second support plate 43". This structure can effectively limit the displacement or shaking of the second support plate 43 during loading. When the ground support plate bears the weight of the device and equipment, the telescopic member 44 can disperse the lateral force on the second support plate 43, preventing the second support plate 43 from accidentally folding or angle deviation due to excessive force, and ensuring that the ground support plate always maintains a stable support state. Especially on cobblestone ground, even if the cobblestones below the support point roll slightly, the support effect of the telescopic member 44 can quickly offset the impact of this displacement, avoiding the imbalance of the ground support plate, and further improving the overall anti-interference ability of the device.

[0051] In addition, the structure also has good adaptability and reliability: the telescopic part 44 can be flexibly adjusted according to the flatness of different ground, so that the second support plate 43 can closely fit the protrusions or depressions of the ground, without the need for pre-treatment of the ground; at the same time, the modular design of the telescopic part 44 facilitates later maintenance and replacement, and if a telescopic part 44 fails, it only needs to be replaced individually, without affecting the normal operation of other components. The split structure of the ground support plate and the support layout of the four corners of the base 1 work together, and this technical solution further improves the function system of "flexible adaptation-stable support", so that the device can still maintain a high-efficiency and safe working state in the dual complex environment of narrow space and cobblestone ground.

[0052] In a preferred embodiment, the first support plate 42 is rectangular in shape. The rectangular first support plate 42 has regular edges and a uniform stress surface, which can form a stable fixed connection with the bottom of the lifting mechanism 41, ensuring that the connection part is evenly stressed, and can also provide sufficient and symmetrical mounting space for the subsequent hinged second support plate 43, avoiding uneven distribution of the second support plate 43 due to irregular shape of the first support plate 42, which affects the stability of the ground support plate as a whole.

[0053] At the same time, the number of second support plates 43 is two, and they are respectively hinged to the opposite two sides of the rectangular first support plate 42. The symmetrical distribution design of the two second support plates 43 can form a "linear" or "inverted U-shaped" support structure together with the first support plate 42 when unfolded, which will not cause the folded device to occupy too much space due to too many second support plates 43, nor will it affect the expansion effect of the support area due to too few second support plates 43. When working on cobblestone ground, the two second support plates 43 can extend to both sides of the first support plate 42 after unfolding, effectively covering a larger range of ground and blocking the rolling of cobblestones on both sides, further strengthening the anti-skid and support ability of the ground support plate.

[0054] In addition, the piston rod of the lifting mechanism 41 is in the shape of a quadrangular prism. Compared with the cylindrical piston rod, the quadrangular prism-shaped piston rod has clear edges and planes, which can form precise guide matching with the cylinder body of the lifting mechanism 41, avoiding rotation deviation of the piston rod during extension and contraction, and ensuring that the ground support plate always remains horizontal during height adjustment. At the same time, the plane structure of the quadrangular prism also facilitates fixed connection with the first support plate 42, which can be tightly fitted through bolts and other connecting parts, reducing the connection gap and improving the power transmission efficiency between the lifting mechanism 41 and the ground support plate, avoiding the connection loose problem caused by the shape of the piston rod.

[0055] In a preferred embodiment, the first support plate 42 is triangular in shape. The triangular structure itself has the characteristics of strong stability, and can evenly disperse the load to the three vertex positions when bearing the weight, reducing the risk of deformation of the first support plate 42 due to excessive local stress. At the same time, the three edges of the triangle can be used as installation reference respectively, providing different directions of installation position for the subsequent hinged second support plate 43, adapting to the ground support requirements of different angles in narrow space, especially in special positions such as the bottom corner of the substation, the triangular first support plate 42 can better fit the surrounding environment, avoiding space interference with other equipment.

[0056] The number of second support plates 43 is three, and they are hinged at the midpoint positions of the three edges of the triangular first support plate 42. The cooperation of the three second support plates 43 and the triangular first support plate 42 can form a "radiation-like" support surface when unfolded, covering the ground from three different directions, which can more comprehensively block the rolling of cobblestones than two second support plates 43, especially suitable for ground with dense cobblestone distribution and large gaps. In addition, the symmetrical distribution of the three second support plates 43 can further enhance the overall stability of the ground support. When one of the second support plates 43 encounters a protruding cobblestone below, the other two second support plates 43 can maintain support balance through their own angle adjustment, avoiding the inclination of the ground support.

[0057] The piston rod of the lifting mechanism 41 is in the shape of a triangular prism. The triangular prism structure is compatible with the shape of the triangular first support plate 42, which can form a more conformal fixed connection with the first support plate 42, reducing stress concentration at the connection site. At the same time, the guiding performance of the triangular prism is stable, which can ensure the piston rod to move in a fixed direction during extension and retraction, avoiding the inclination of the ground support during height adjustment, and forming cooperation with the three second support plates 43 to jointly ensure the stable support effect of the ground support on complex ground.

[0058] In a preferred embodiment, the shape of the first support plate 42 is again rectangular. The versatility of the rectangular structure is strong, which not only facilitates standardized production and installation, but also can adapt to different specifications of the lifting mechanism 41, reducing the processing and replacement cost of parts. In addition, the length and width of the rectangular first support plate 42 can be flexibly adjusted according to the size of the space of the four corners of the base 1. In a narrow working environment, the size of the rectangle can be optimized to ensure that the ground support neither exceeds the range of the base 1 to cause space interference, nor can it retain enough support area, balancing space adaptability and support performance.

[0059] The number of the second supporting plates 43 is four, and each is hingedly connected to an edge of the rectangular first supporting plate 42. The distribution design of the four second supporting plates 43 can form a "cross-shaped" or "rectangular ring" supporting structure when unfolded, and expand the supporting area from four directions of the first supporting plate 42. Compared with two or three second supporting plates 43, the four second supporting plates 43 can more comprehensively cover the ground around the first supporting plate 42, and have a wider range of blocking of cobblestones, and are especially suitable for scenes where cobblestones are unevenly distributed or have large gaps.

[0060] The piston rod of the lifting mechanism 41 is still in the shape of a quadrangular prism. The stability and directivity of the quadrangular prism-shaped piston rod can meet the height adjustment requirements when the four second supporting plates 43 are unfolded, and ensure that the ground supporting plate will not tilt due to the offset of the piston rod during the bearing process. At the same time, the quadrangular prism structure has strong compatibility with the connection of the rectangular first supporting plate 42, and can be fixed by multiple groups of bolts to further improve the connection strength. Even in the case of uneven force on the four second supporting plates 43, the stable piston rod structure can also transmit the load to the lifting mechanism 41, ensuring the reliability of the whole supporting assembly 4.

[0061] In one possible implementation, the top of the translation platform 31 is fixedly connected with an air cushion 5.

[0062] From the perspective of equipment surface protection, the air cushion 5 has elastic buffering characteristics, and can form a flexible contact layer between the translation platform 31 and the equipment to be lifted. When the equipment is placed on the translation platform 31, the air cushion 5 can absorb the impact force in the instant of contact between the equipment and the platform by deforming itself, avoiding damage to the equipment shell, surface coating or precision components due to the weight of the equipment or slight collision when placing. Especially for equipment such as substation fans that may have plastic shells or fragile cooling fins, the buffering effect of the air cushion 5 can greatly reduce the risk of appearance damage and functional failure during lifting, and solves the problem of scratches and indentations caused by direct contact between the traditional metal or hard platform and the equipment.

[0063] From the support adaptability and stability, the air cushion 5 has a certain plasticity and can slightly conform to the shape profile of the device bottom. If there is a local protrusion, depression or irregular structure on the device bottom to be lifted, the air cushion 5 can adjust elastically after inflation to fill the gap between the device and the platform, so that the device bottom is more evenly stressed, avoiding tilting and shaking of the device during lifting or translation due to local suspension. At the same time, the friction between the air cushion 5 and the device is greater than that of the traditional rigid platform, which can reduce the relative sliding of the device during movement of the translation platform 31, especially when precise adjustment of the device position is required in a narrow space, the device can be ensured to be always stably attached to the translation platform 31, improving the safety and accuracy of the operation.

[0064] In addition, the structural design of the air cushion 5 also has the advantages of light weight and easy maintenance: its material is light and will not significantly increase the overall weight of the translation platform 31, avoiding additional load burden on the lifting assembly 2 and the translation assembly 3. If the air cushion 5 is slightly damaged, it can be repaired by inflating or replaced separately, without the need to disassemble the entire translation platform 31, reducing the later maintenance cost and operation complexity. In cooperation with the precise driving of the translation assembly 3 and the stable fixation of the support assembly 4, this technical solution further improves the operation system of "stable support-precise movement-safety protection", so that the device can meet the position accuracy requirements when lifting the equipment in a narrow space, and fully protect the equipment integrity, especially suitable for equipment operation and maintenance scenes such as transformer substation bottom fans that require fine protection.

[0065] In one possible implementation, the top of the air cushion 5 is fixedly connected with a protective plate 6.

[0066] From the comprehensiveness of equipment protection, the protective plate 6 as a rigid layer can directly contact the equipment to be lifted, first blocking the possible puncture or scratching of the air cushion 5 by sharp components on the device bottom. When adjusting the position of the device in a narrow space, the relative sliding of the device and the protective plate 6 will not directly damage the air cushion 5, avoiding the loss of buffer due to damage to the air cushion 5, prolonging the service life of the air cushion 5, and also preventing the sharp structure on the device bottom from being worn due to direct contact with the air cushion 5, achieving two-way protection of the device and the air cushion 5.

[0067] From the support stability and stress uniformity, the protection plate 6 has a flat and rigid surface, which can uniformly disperse the weight of the equipment to the air cushion 5 below, avoiding the problem of uneven stress and local excessive compression of the air cushion 5 caused by the local protrusion of the equipment bottom. For example, when there are irregular support feet or protruding structures on the bottom of the equipment, the protection plate 6 can conduct the pressure to a larger area of the air cushion 5 through its rigidity, so that the air cushion 5 deforms uniformly as a whole, ensuring that the equipment always maintains a horizontal state during translation or lifting, reducing the risk of equipment tilting caused by local stress imbalance. In addition, the rigid protection plate 6 can also improve the "stability" of the equipment when placed, avoiding slight shaking of the equipment during the movement of the translation platform 31 due to the excessive flexibility of the air cushion 5, especially suitable for equipment such as substation fans with fan blades and other easily shaking components, further ensuring the safety of operation in narrow space.

[0068] In addition, the arrangement of the protection plate 6 also enhances the practicality and adaptability of the device: the protection plate 6 can be designed into standardized specifications according to the bottom size of the common equipment to be lifted, facilitating batch production and replacement; at the same time, its rigid structure also facilitates the marking of positioning scales or the installation of limiting blocks on the surface, assisting workers to quickly and accurately position the equipment at the center position of the translation platform 31, improving operation efficiency. In cooperation with the precise driving of the translation assembly 3, the stable fixation of the support assembly 4 and the flexible buffering of the air cushion 5, this technical scheme perfects the operation system of "stable support - precise movement - double protection", enabling the device to meet the precision and stability requirements of equipment lifting in narrow space and cobblestone ground environment, and to maximize the risk of damage to the equipment and the device itself, especially suitable for equipment operation and maintenance scenes such as substation bottom fans that need to be protected.

[0069] The device for stably lifting equipment in narrow space provided by the present application has the following advantages: compared with the prior art, the device for stably lifting equipment in narrow space provided by the present application, the walking wheels 11 of the base 1 are designed to facilitate the flexible movement of the device in the narrow space of the substation bottom layer, solving the problem that traditional large-scale lifting equipment cannot enter the operation area due to its large size, and can accurately reach the fan maintenance position. The lifting assembly 2 realizes the stable lifting of the equipment through the lifting platform 21, replacing the manual lifting method with low efficiency and poor safety, avoiding damage to the fan caused by manual operation, and meeting the lifting requirements during fan disassembly and maintenance.

[0070] The translation platform 31 of the translation assembly 3 can slide in the direction perpendicular to the walking direction of the base 1, can finely adjust the position of the fan after the device reaches the approximate position, is suitable for the operation scene that the gap between the fan and the surrounding device and wall is extremely small, and improves the positioning accuracy. The foldable support plate of the support assembly 4 can increase the contact area with the cobblestone ground through the structure that the two ends are folded downward, can limit the cobblestone from sliding out from below the support plate, effectively solves the problems that the device is not stable and is easy to tilt and shake caused by the smooth and large gap of the cobblestone ground on the bottom layer of the transformer substation, avoids safety accidents such as device tipping and fan falling, and guarantees the safety and reliability of the operation and maintenance work. The overall device is small in size and suitable in function, and comprehensively improves the use defects of the existing device in the narrow space and the special ground environment.

[0071] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for stably lifting equipment in a confined space, characterized in that, include: The base has wheels for movement; The lifting assembly is fixedly connected to the base at its bottom; the top of the lifting assembly is provided with a lifting platform. A translation component is disposed on the lifting platform; the translation component includes a translation platform slidably connected to the lifting platform, the sliding direction of the translation platform being perpendicular to the traveling direction of the base; and A support assembly is disposed at the bottom of the base to fix the position of the base; the support assembly includes a foldable ground support plate, the two ends of which can be folded downward to prevent pebbles from sliding out from under the ground support plate.

2. The device for stably lifting equipment in a confined space as described in claim 1, characterized in that, The lifting assembly includes: The drive mechanism is fixedly connected to the base; and A folding mechanism is vertically arranged; the bottom of the folding mechanism is connected to the driving mechanism, and the top is hinged to the lifting platform; the driving mechanism is used to drive the folding mechanism to fold or unfold, so as to drive the lifting platform to rise and fall.

3. The device for stably lifting equipment in a confined space as described in claim 2, characterized in that, The drive mechanism includes: A first motor is fixedly connected to the base; and The first lead screw is rotatably connected to the base and is horizontally positioned; the first lead screw has two threads in opposite directions; the first motor is fixedly connected to the first lead screw.

4. The device for stably lifting equipment in a confined space as described in claim 3, characterized in that, The folding mechanism includes: The first folding arm is hinged at one end to the middle of the lifting platform, and threaded at the other end to one end of the first lead screw; and The second folding arm has one end hinged to the middle position of the lifting platform and the other end hinged to the other end of the first lead screw; the first folding arm and the second folding arm are symmetrically arranged about the middle position of the lifting platform.

5. The device for stably lifting equipment in a confined space as described in claim 1, characterized in that, The translation component includes: The second motor is fixedly connected to the lifting platform; and The second lead screw is threadedly engaged with the translation platform; the second motor is fixedly connected to the second lead screw.

6. The device for stably lifting equipment in a confined space as described in claim 1, characterized in that, The support components are provided in four parts, and are respectively located at the four corners of the base; the support components include a lifting mechanism fixedly connected to the lower surface of the base, and the ground support plate is fixedly connected to the bottom of the lifting mechanism.

7. The apparatus for stably lifting equipment in a confined space as described in claim 6, characterized in that, The ground support plate includes: The first support plate is fixedly connected to the lifting mechanism; and Multiple second support plates are hinged to the first support plate.

8. The apparatus for stably lifting equipment in a confined space as described in claim 7, characterized in that, The support assembly also includes multiple telescopic members, each corresponding to one of the second support plates; one end of each telescopic member is hinged to the second support plate, and the other end is hinged to the lifting mechanism.

9. The device for stably lifting equipment in a confined space as described in claim 1, characterized in that, An air cushion is fixedly connected to the top of the translation platform.

10. The apparatus for stably lifting equipment in a confined space as described in claim 9, characterized in that, A protective plate is fixedly connected to the top of the air cushion.

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