Maintenance platform

Abstract

The invention discloses a maintenance platform which can be applied to a shaft furnace and comprises a base body frame, a suspension frame and a height adjusting structure, the height adjusting structure is arranged between the base body frame and the suspension frame, and when a height operation piece is operated, the height adjusting structure is arranged between the base body frame and the suspension frame. The relative height position of the base body frame and the suspension frame can be adjusted; the expanding frame is movably connected with the base body frame, and the expanding frame can move relative to the base body frame in the horizontal direction; the expanding frame is provided with a working position extending out of the base body frame and a non-working position stored in the base body frame; and the circumferential rotation adjusting part is arranged on the expanding frame, and when the expanding frame is located at the working position, the circumferential rotation adjusting part can make contact with the shaft furnace to drive the overhauling platform to rotate in the circumferential direction. According to the maintenance platform provided by the invention, flexible adjustment of the whole maintenance platform in the spatial position can be realized, so that the maintenance operation efficiency is greatly improved, and the safety is high.

Description

Technical Field

[0001] The invention relates to the technical field of maintenance construction equipment, and in particular to a maintenance platform. Background Art

[0002] During the maintenance and replacement of the water-cooled wall or refractory lining in a metallurgical blast furnace, or during maintenance operations on large chimneys, vertical furnaces and other similar equipment, or between two tall structures, after removing the top parts of the equipment, the operator first goes down to a certain height in the furnace where the maintenance work needs to be done, hangs in the air in the furnace, drills holes in the refractory bricks, and sets positioning holes; then, positioning holes for the bridge platform are set at this height to carry out dangerous operations at height. Among them, in the construction process of manually building a large-scale manual operation bridge or platform using the positioning holes, there are dangerous sources of injury accidents such as object impact, falling from height and mechanical injury, and the existing maintenance equipment cannot be quickly replaced, which reduces the maintenance efficiency of the equipment.

[0003] In order to solve the above problems, some solutions are provided in the prior art. However, while solving the above technical problems, the prior art will also generate some new problems and cannot achieve the ideal use effect.

[0004] Therefore, it is necessary to propose a maintenance platform to solve at least one of the above problems. Summary of the invention

[0005] In view of the defects existing in the prior art, an overhaul platform is provided in the embodiments of the present invention, which can realize the flexible adjustment of the spatial position of the entire overhaul platform, thereby greatly improving the efficiency of the overhaul operation and having high safety.

[0006] The specific technical solution of the implementation mode of the present invention is:

[0007] A maintenance platform, which can be used in a vertical furnace, comprises:

[0008] A base frame, the base frame comprising a base and a first side frame arranged on the base, the first side frame comprising a plurality of side columns arranged on the base;

[0009] A suspension frame, the suspension frame comprising a suspension ceiling and a second side frame connected to the suspension ceiling and capable of telescopic movement in a height direction relative to the first side frame;

[0010] A height adjustment structure, the height adjustment structure is arranged between the base frame and the suspension frame, the height adjustment mechanism comprises: a first matching piece fixed to the first side frame, a second matching piece fixed to the second side frame, and a height operating piece for driving the first matching piece and the second matching piece to move relative to each other, when the height operating piece is operated, the relative height position of the base frame and the suspension frame can be adjusted;

[0011] An expansion frame, the expansion frame is movably connected to the base frame, and the expansion frame can move relative to the base frame in a horizontal direction; the expansion frame has a working position extending out of the base frame and a non-working position received in the base frame;

[0012] A circumferential rotation regulating part is arranged on the expansion frame. When the expansion frame is in the working position, the circumferential rotation regulating part can contact the vertical furnace to drive the maintenance platform to rotate circumferentially.

[0013] In a preferred embodiment, the base includes a surrounding frame and a bottom wall located on the surrounding frame, and a receiving cavity is provided in the base, and the size and structure of the receiving cavity are adapted to the size and structure of the expansion frame.

[0014] In a preferred embodiment, a guide mechanism is provided between the expansion frame and the base, the guide mechanism includes a slide rail and a slide groove, one of the expansion frame and the base frame is provided with the slide rail, and the other of the expansion frame and the base frame is provided with the slide groove.

[0015] In a preferred embodiment, there are multiple expansion frames, and multiple accommodating cavities matching the expansion frames are arranged on the base at intervals along the height direction. The multiple expansion frames move in different directions relative to the base frame.

[0016] In a preferred embodiment, the expansion frame includes a first expansion frame and a second expansion frame, the base frame has a square outline, the base frame has a first side and a second side relative to each other, and a third side and a fourth side relative to each other, and the base is provided with a first accommodating cavity for accommodating the first expansion frame and a second accommodating cavity for accommodating the second expansion frame, the first accommodating cavity is formed with a first opening on the first side, and the second accommodating cavity is formed with a second opening on the second side, the structure of the first opening is adapted to the end face of the first expansion frame; the cross-sectional structure of the second opening is adapted to the end face of the second expansion frame, and when the first expansion frame and the second expansion frame move in opposite directions respectively, the horizontal size of the maintenance platform can reach a maximum.

[0017] In a preferred embodiment, the maintenance platform further comprises an expansion positioner, and the expansion positioner is used to limit the expansion frame relative to the base frame after the expansion frame extends out of the base frame to reach the working position.

[0018] In a preferred embodiment, the expansion positioner includes: an adjustment rod fixed on the base frame, an expansion operating part arranged at one end of the adjustment rod, and a supporting part arranged at the other end of the adjustment rod. By adjusting the expansion operating part, the supporting part can be close to or away from the expansion frame.

[0019] In a preferred embodiment, the abutting portion is an elastic limiting block.

[0020] In a preferred embodiment, the first mating member includes a worm wheel, the second mating member includes a worm assembly, the worm assembly includes a first worm and a second worm arranged in parallel at a predetermined distance; the worm wheel is arranged between the first worm and the second worm, and is meshed with the first worm and the second worm respectively.

[0021] In a preferred embodiment, the second side frame is a hollow rectangular frame, the second side frame has a first side wall and a second side wall relative to each other, and a third side wall and a fourth side wall relative to each other, the first worm gear is arranged close to the first side wall, the second worm gear is arranged close to the second side wall, the third side wall and the fourth side wall are provided with a plurality of spaced-apart positioning grooves along the height direction, the maintenance platform also includes a height positioning device adapted to the positioning groove, the height positioning device cooperates with the positioning groove to limit the movement of the base frame relative to the suspension frame.

[0022] In a preferred embodiment, the first matching piece is arranged at a position close to the top of the first side frame, the cross-section of the first side frame is smaller than the cross-section of the second side frame, the first side frame at least partially extends into the second side frame, the height stopper includes a spring, and the first stopper block and the second stopper block are respectively provided at both ends of the spring, the first stopper block and the second stopper block are inserted into the stopper groove, at least part of the first stopper block protrudes from the third side wall, and at least part of the second stopper block protrudes from the fourth side wall, when relative forces are applied to the first stopper block and the second stopper block, the spring can be compressed, the first stopper block and the second stopper block can be moved into the second side frame, and the base frame and the suspension frame can move relatively.

[0023] In a preferred embodiment, the second side frame of the suspension frame is provided with a plurality of locking grooves along the height direction, and the locking grooves can be used for passing safety ropes.

[0024] In a preferred embodiment, a spacer and a roller bearing are respectively disposed at both ends of the first worm and the second worm, wherein the spacer is annular, the inner diameter of the spacer is greater than or equal to the inner diameter of the roller bearing, and the outer diameter of the spacer is less than or equal to the outer diameter of the roller bearing.

[0025] In a preferred embodiment, a plurality of hanging ears are provided on the suspended ceiling, and the plurality of hanging ears are located at positions where the suspended ceiling is connected to the second side frame.

[0026] The technical solution of the present invention has the following significant beneficial effects:

[0027] The maintenance platform provided in the implementation mode of the present application can utilize a height adjustment structure to adjust the relative height position of the base frame and the suspension frame at a set hoisting height, thereby realizing the adjustment of the maintenance platform in the height direction. At the same time, by setting an expansion frame to expand the maintenance diameter and by using a circumferential rotation adjustment part to realize the rotation operation of the entire maintenance platform in the circumferential direction, the operator can flexibly adjust the spatial position of the entire maintenance platform according to operational needs, thereby greatly improving the efficiency of maintenance operations and having high safety.

[0028] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0030] Figure 1 A schematic diagram of the structure of a maintenance platform provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of a maintenance platform provided in an embodiment of the present application in a use state;

[0032] Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A;

[0033] Figure 4 for Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0034] Figure 5 A schematic diagram of the structure of a maintenance platform base frame and an expansion frame provided in an embodiment of the present application;

[0035] Figure 6 for Figure 5 Sectional view at CC;

[0036] Figure 7 A partial top view of the base frame in the embodiment of the present application;

[0037] Figure 8 for Figure 5 Sectional view at DD in the middle;

[0038] Fig. 9 for Figure 8 A partial enlarged schematic diagram of point E in the middle.

[0039] Reference numerals of the present application:

[0040] 1. Suspension frame;

[0041] 101. second side frame; 102. hanging ear;

[0042] 2. Base frame;

[0043] 21. first side frame; 22. base;

[0044] 3. Worm gear;

[0045] 4. Worm assembly;

[0046] 41. first worm gear; 42. second worm gear;

[0047] 5. Height operating parts;

[0048] 6. Height stopper;

[0049] 61. First card block; 62. Second card block;

[0050] 7. Card slot;

[0051] 8. Travel slot;

[0052] 9. Expand the framework;

[0053] 10. Expand the card positioner;

[0054] 11. Universal wheel;

[0055] 12. Pads;

[0056] 13. Roller bearings;

[0057] 14. Spring;

[0058] 15. Screw;

[0059] 16. Abutment portion;

[0060] 17. Operating handle;

[0061] 18. Safety rope. DETAILED DESCRIPTION

[0062] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0063] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0065] Prior art 1 discloses an automatic positioning mechanical arm bridge device and a positioning method for vertical furnace maintenance, wherein the automatic positioning mechanical arm bridge device comprises a box-type body, a mechanical arm platform, a thruster, an electric push rod, an electric self-tapping rotary head, and an electric control box; the box-type body is a polygonal regular prism frame structure composed of metal steel sections, and mechanical arm platforms that cooperate with each other are arranged on both sides symmetrically to the center line of the box-type body, the lower part of the mechanical arm platform is movably hinged to a support fixed to the bottom frame of the box-type body, the upper part of the mechanical arm platform is movably hinged to the front end of the thruster push rod, and the rear end of the thruster push rod is movably hinged to the frame of the box-type body, the mechanical arm platforms on both sides are pushed by the thruster, unfolded from a retracted state, and cooperate with each other to form a horizontal bridge platform; the front end of the mechanical arm platform is symmetrically provided with an electric push rod for support inside, and an electric self-tapping rotary head is symmetrically provided outside.

[0066] The technical solution provided by the prior art 1 can realize the automatic positioning, installation and removal of the bridge device, eliminating the safety hazards of the prior art. However, the inventor found that the prior art 1 still has the following problems:

[0067] 1) The electric self-tapping rotary head fixes the manned maintenance platform by drilling holes. This method directly destroys the structure of the refractory lining in the furnace and affects the subsequent use of the furnace body;

[0068] 2) The platform has no guardrails, and maintenance personnel may easily fall off the platform during maintenance work, causing serious injuries.

[0069] 3) The expansion function of the platform is realized by the electric mechanism. The setting of this electric mechanism increases the failure rate of the equipment. In the event of equipment failure, the expansion function of the platform cannot be realized, and personnel may be in danger in the event of misoperation.

[0070] Prior art 2 discloses a telescopic platform for blast furnace overhaul, which includes a group of telescopic square tubes, each of which is arranged in a star shape and has its midpoint fixed on a circular plate. Each telescopic square tube includes a large square tube in the middle and a small square tube on the outside. One end of the small square tube is movably inserted into the large square tube, and the other end is welded to one side of the back of an angle steel, and a steel springboard is laid on the square tube.

[0071] The technical solution provided by the second prior art can conveniently change the platform diameter, save time and cost, and has significant effects in shortening the main line construction period and reducing labor. However, the inventors found that the second prior art still has the following problems:

[0072] 1) As the steel pipes lengthen, the steel springboards that need to be erected at the same time are too large, which increases the inconvenience for maintenance personnel operating in the confined space inside the furnace;

[0073] 2) The large-sized steel springboard is not stable enough, and maintenance personnel may be at risk of falling;

[0074] 3) There are no guardrails on the maintenance platform and no safety measures for maintenance personnel. The equipment itself poses a huge safety operation risk.

[0075] Prior art three discloses a high-altitude folding platform device for repairing DRI pipes of Ouye furnace, which includes two semicircular foldable platforms, which are hinged together by a rotating shaft, and two lifting ear devices are respectively arranged in the table top of each platform, and a safety limit plate is fixedly arranged on both sides of the bottom surface of one of the platforms below the rotating shaft, a locking tongue is convexly arranged in the middle of the outer edge of one platform, and a locking buckle is correspondingly convexly arranged in the middle of the outer edge of the other platform, the locking tongue and the locking buckle cooperate with each other, and a pin shaft hole is penetrated by a locking pin in the pin shaft hole, and the locking pin is perpendicular to the rotating shaft of the two semicircular foldable platforms.

[0076] The technical solution provided by the prior art 3 can ensure the work safety of the repair personnel of the DRI downcomer refractory material of the Ouye furnace, shorten the processing time and difficulty. However, the inventor found that the prior art 3 still has the following problems:

[0077] 1) The folding and laying of the maintenance platform are both manually operated by pulling a rope and pulling out a locking pin to achieve the purpose. When the maintenance platform is not used, it is difficult to manually reset the locking pin to its original position in a narrow working space.

[0078] 2) When the maintenance platform is transported from the outside of the equipment to the inside of the equipment, because the maintenance platform is located under the DRI screw feeder, the collision caused by the construction work will affect the refractory structure inside the main body of the equipment.

[0079] 3) There are 4 hanging points in the working area of ​​the maintenance platform. The hanging ropes of these hanging points interfere with the working area, which will affect the maintenance work of maintenance personnel in some working areas.

[0080] 4) There are no guardrails on the maintenance platform and no safety measures for maintenance personnel, which poses a great risk to safety operations.

[0081] The present application specification provides a maintenance platform in the embodiments, which can be used in a vertical furnace, or in scenes similar to the vertical furnace, such as chimneys and other equipment. In the embodiments of the present application, the maintenance platform is mainly used in a vertical furnace as an example for illustration, and other application scenes can refer to the present application.

[0082] The present application specification provides a maintenance platform that can achieve flexible adjustment of the spatial position of the entire maintenance platform, thereby greatly improving the efficiency of maintenance operations and having high safety.

[0083] Please refer to Figures 1 to 9 The maintenance platform may include: a base frame 2, the base frame 2 includes a base 22 and a first side frame 21 arranged on the base 22, the first side frame 21 includes a plurality of side columns arranged on the base 22; a suspension frame 1, the suspension frame 1 includes a suspension ceiling and a second side frame 101 connected to the suspension ceiling and capable of telescopic movement relative to the first side frame 21 in the height direction; a height adjustment structure, the height adjustment structure is arranged between the base frame 2 and the suspension frame 1, the height adjustment mechanism includes: a first matching piece fixed in the first side frame 21, a second matching piece fixed in the second side frame 101, and a height adjustment mechanism for driving the first matching piece and The second matching part has a height operating part 5 that moves relative to the base frame 2. When the height operating part 5 is operated, the relative height position of the base frame 2 and the suspension frame 1 can be adjusted; an expansion frame 9, the expansion frame 9 is movably connected to the base frame 2, and the expansion frame 9 can move relative to the base frame 2 in the horizontal direction; the expansion frame 9 has a working position extending out of the base frame 2 and a non-working position received in the base frame 2; a circumferential rotation adjusting part, the circumferential rotation adjusting part is arranged on the expansion frame 9, and when the expansion frame 9 is in the working position, the circumferential rotation adjusting part can contact the vertical furnace to drive the maintenance platform to rotate circumferentially.

[0084] The maintenance platform provided in the implementation mode of the present application can utilize a height adjustment structure to adjust the relative height position of the base frame 2 and the suspension frame 1 at a set hoisting height, thereby realizing the adjustment of the maintenance platform in the height direction. At the same time, by providing an expansion frame 9 to expand the maintenance diameter and by using a circumferential rotation adjustment portion to realize the rotation operation of the entire maintenance platform in the circumferential direction, the operator can flexibly adjust the spatial position of the entire maintenance platform according to operational needs, thereby greatly improving the efficiency of maintenance operations.

[0085] like Figure 1 and Figure 2 As shown, the maintenance platform mainly includes: a base frame 2, a suspension frame 1, a height adjustment mechanism, an expansion frame 9 and a circumferential rotation adjustment part.

[0086] like Figure 5 As shown, the base frame 2 may include a base 22 and a first side frame 21 disposed on the base 22, and the first side frame 21 may include a plurality of side columns disposed on the base 22 and spaced apart. Specifically, the base frame 2 may be in a square or rectangular shape, and of course, the base frame 2 may also be in a circular or other regular or irregular shape. In the embodiments of the present application, the base frame 2 is mainly described by taking a square structure as an example.

[0087] The base 22 may include a frame and a bottom wall on the frame. The frame may be square or rectangular, and a side column may be provided at each of the four corners of the frame. At least one accommodating cavity may be provided in the base 22, and the size and structure of the accommodating cavity may be compatible with the size and structure of the expansion frame 9.

[0088] like Figure 2 As shown, in this embodiment, the expansion frame 9 can be matched with the base frame 2 in a movable connection. By setting up the expansion platform, maintenance personnel can quickly reach the maintenance position without moving the maintenance platform itself, thereby improving maintenance efficiency.

[0089] Specifically, a guiding mechanism may be provided between the expansion frame 9 and the base 22. The guiding mechanism may be a matching mechanism of a slide rail and a slide groove. For example, a slide rail is provided on one of the expansion frame 9 and the base frame 2, and a slide groove is provided on the other of the expansion frame 9 and the base frame 2. When it is necessary to open the expansion frame 9, a force may be applied to the expansion frame 9, and through the guiding mechanism, the expansion frame 9 can be moved to a predetermined position in a horizontal direction relative to the base frame 2, so that the expansion frame 9 is switched from a non-working position to a working position. When the maintenance is completed, a reverse force may be applied to the expansion frame 9, and through the guiding mechanism, the expansion frame 9 is moved in a horizontal direction toward the direction close to the base frame 2, so that the expansion frame 9 is switched from a working position to a non-working position.

[0090] In this embodiment, the number of the expansion frames 9 may be one or more. Specifically, the number of the expansion frames 9 may vary according to different scenarios in which the maintenance platform is actually applied.

[0091] In some embodiments, there are multiple expansion frames 9 , and the base 22 is provided with multiple accommodating cavities matching the expansion frames 9 at intervals along the height direction. The multiple expansion frames 9 move in different directions relative to the base frame 2 .

[0092] In this embodiment, when the maintenance platform is used in a vertical furnace with a larger cross-section, it can be provided with a plurality of expansion frames 9. Taking the number of the expansion frames 9 as two (respectively the first expansion frame 9 and the second expansion frame 9), and taking the overall outline of the base frame 2 as an example, the base frame 2 has a first side and a second side relative to each other, and a third side and a fourth side relative to each other. A first accommodating cavity for accommodating the first expansion frame 9 and a second accommodating cavity for accommodating the second expansion frame 9 can be provided in the base 22. The first accommodating cavity and the second accommodating cavity are arranged in sequence at intervals along the height direction. In the horizontal direction, the first accommodating cavity has a first opening near the first side, and the second accommodating cavity has a second opening near the second side. The cross-sectional structure of the first opening is adapted to the end face of the first expansion frame 9; the cross-sectional structure of the second opening is adapted to the end face of the second expansion frame 9. When it is needed, the maintenance personnel can move the first expansion frame 9 and the second expansion frame 9 in opposite directions respectively, so that the maintenance diameter of the maintenance platform is expanded from the size of the original base frame 2 to the sum of the size of the base frame 2 and the size of the first expansion frame 9 and the second expansion frame 9, and the horizontal size of the maintenance platform can reach the maximum.

[0093] like Figure 8 and Fig. 9 As shown, in some embodiments, in order to ensure that the expansion frame 9 can be fixed relative to the base frame 2 after reaching the working position, thereby ensuring the safety of maintenance operators, the maintenance platform can also include an expansion positioner 10, and the expansion positioner 10 is used to limit the expansion frame 9 relative to the base frame 2 when the expansion frame 9 extends out of the base frame 2 and reaches the working position.

[0094] Specifically, the expansion positioner 10 may include: an adjustment rod fixed on the base frame 2, an expansion operating part arranged at one end of the adjustment rod, and a supporting part 16 arranged at the other end of the adjustment rod. By adjusting the expansion operating part, the supporting part 16 can be close to or away from the expansion frame 9.

[0095] The adjusting rod may be in the form of a screw 15, the outer surface of which is provided with an external thread; the base frame 2 is provided with an internal thread hole that matches the external thread of the screw 15. The expansion operation portion may be specifically an operating handle 17 provided on one side of the base frame 2. When the operating handle 17 is rotated in one direction (e.g., clockwise), the screw 15 can drive the abutment portion 16 to approach the expansion frame 9, so that the abutment portion 16 can contact the expansion frame 9, thereby constraining the expansion frame 9 from moving relative to the base frame 2. When the operating handle 17 is rotated in the opposite direction (e.g., counterclockwise), the screw 15 can drive the abutment portion 16 away from the expansion frame 9, and the abutment portion 16 is out of contact with the expansion frame 9, so that the expansion frame 9 can be accommodated in the base frame 2.

[0096] When the expansion frame 9 moves in the first direction relative to the base frame 2, the adjustment rod moves in the second direction relative to the expansion frame 9, and the second direction can be perpendicular to the first direction. The number of the expansion positioners 10 can be two, and the two expansion positioners 10 can be distributed at intervals on both sides of the base frame 2 along the second direction.

[0097] The abutting portion 16 may be an elastic limiting block.

[0098] For example, the abutting portion 16 may be a rubber stopper with a certain surface area. The rubber stopper utilizes its own elastic deformation capability to not only ensure a better abutting force, but also ensure that the surface of the position where the rubber stopper contacts will not be damaged.

[0099] In this embodiment, the circumferential rotation adjustment part can be specifically in the form of a universal wheel 11, and the universal wheel 11 can be arranged on the same side where the opening is arranged on the base 22 of the expansion frame 9 and the base frame 2. When the expansion frame 9 is in the working position, the universal wheel 11 can be extended along with the expansion frame 9, and when the universal wheel 11 contacts the vertical furnace, the operator applies torque to drive the entire maintenance platform to rotate in the circumferential direction, thereby realizing 360° maintenance angle adjustment in the circumferential direction.

[0100] In an embodiment of the present application, by providing a height adjustment structure between the base frame 2 and the suspension frame 1, the relative height position of the base frame 2 and the suspension frame 1 can be adjusted, thereby adjusting the height direction of the maintenance platform according to the needs of the maintenance operator.

[0101] Please refer to Figure 2 , Figure 3 and Figure 4The height adjustment mechanism may include: a first matching piece fixed in the first side frame 21, a second matching piece fixed in the second side frame 101, and a height operating piece 5 for driving the first matching piece and the second matching piece to move relative to each other.

[0102] In this embodiment, the first matching piece and the second matching piece can be specifically in the form of a combination of a worm wheel 3 and a worm. Of course, the specific form of the first matching piece and the second matching piece can also be other combination forms that can achieve height direction adjustment. In the embodiment of the present application, the above-mentioned worm wheel 3 and worm are mainly used as examples for illustration.

[0103] In one embodiment, the first mating part may include a worm wheel 3, and the second mating part may include a worm assembly 4, wherein the worm assembly 4 includes a first worm 41 and a second worm 42 arranged in parallel at a predetermined distance; the worm wheel 3 is arranged between the first worm 41 and the second worm 42, and is meshed with the first worm 41 and the second worm 42 respectively.

[0104] Among them, a travel groove 8 for facilitating the movement of the worm wheel 3 may be provided on the second side frame 101 of the suspension frame 1 along the height direction. Specifically, a center rod is provided at the center of the worm wheel 3, and the center rod is inserted into the travel groove 8. Both ends of the center rod may be provided with a height operating member 5 respectively. The operator can drive the worm wheel 3 to rotate by operating the height operating member 5, and then drive the worm wheel 3 to move relative to the worm, thereby realizing the height adjustment of the base frame 2 relative to the suspension frame 1.

[0105] like Figure 2 As shown, the suspended ceiling is provided with a plurality of lifting ears 102, and the plurality of lifting ears 102 are located at the position where the suspended ceiling is connected to the second side frame 101. For example, when the suspended ceiling is square as a whole, a lifting ear 102 may be provided at each corner of the suspended ceiling. When in use, the suspension device may be connected to the lifting ear 102, so that the suspension frame 1 can be reliably positioned. In the embodiment of the present application, the suspension operation is performed by the suspension frame 1, thereby avoiding the interference caused by the direct lifting of the maintenance platform by the lifting rope, which in turn leads to the problem of low efficiency of the maintenance operation.

[0106] Since there needs to be sufficient matching force between the suspension frame 1 and the base frame 2 so that they can reliably bear the sum of the gravity of the base frame 2, the maintenance operators and some necessary maintenance tools, a locking structure can be further set on the suspension frame 1 and the base frame 2 bracket to limit the movement of the base frame 2 relative to the suspension frame 1.

[0107] Please refer to Figure 5 and Figure 6Specifically, the second side frame 101 can be a hollow rectangular frame, the second side frame 101 has a first side wall and a second side wall relative to each other, and a third side wall and a fourth side wall relative to each other, the first worm 41 is arranged close to the first side wall, and the second worm 42 is arranged close to the second side wall, and the third side wall and the fourth side wall are provided with a plurality of spaced-apart positioning grooves 7 along the height direction, and the maintenance platform also includes a height positioning device 6 adapted to the positioning groove 7, and the height positioning device 6 cooperates with the positioning groove 7 to limit the movement of the base frame 2 relative to the suspension frame 1.

[0108] Among them, the first matching piece is arranged at a position close to the top of the first side frame 21, the cross-section of the first side frame 21 is smaller than the cross-section of the second side frame 101, the first side frame 21 at least partially extends into the second side frame 101, the height stopper 6 includes a spring 14, and the two ends of the spring 14 are respectively provided with a first stop block 61 and a second stop block 62, the first stop block 61 and the second stop block 62 are inserted into the stop groove 7, at least part of the first stop block 61 protrudes from the third side wall, and at least part of the second stop block 62 protrudes from the fourth side wall, when the first stop block 61 and the second stop block 62 are applied with relative forces, the spring 14 can be compressed, the first stop block 61 and the second stop block 62 can be moved into the second side frame 101, and the base frame 2 and the suspension frame 1 can move relative to each other.

[0109] like Figure 7 As shown, in this embodiment, the limiting structure may include a structure in which a height stopper 6 and a stopper groove 7 cooperate. The height stopper 6 may be a stopper with a certain deformation capability. When the detection operator presses the first stopper block 61 and the second stopper block 62, the height stopper 6 may be retracted into the second side frame 101 to achieve unlocking. After unlocking, the base frame 2 and the suspension frame 1 may move relative to each other by a distance spaced by the stopper groove 7.

[0110] In one embodiment, a spacer 12 and a roller bearing 13 are respectively disposed at both ends of the first worm 41 and the second worm 42. The spacer 12 is annular, and the inner diameter of the spacer 12 is greater than or equal to the inner diameter of the roller bearing 13, and the outer diameter of the spacer 12 is less than or equal to the outer diameter of the roller bearing 13.

[0111] In this embodiment, a spacer 12 and a roller bearing 13 are provided at both ends of the first worm 41 and the second worm 42, and the size of the spacer 12 does not exceed the radial size of the roller bearing 13, that is, the projection of the roller bearing 13 toward the spacer 12 can cover the spacer 12, thereby ensuring that the characteristics of the roller bearing 13 can be utilized to inspect the wear of the worm on the suspension frame 1.

[0112] In one embodiment, the second side frame 101 of the suspension frame 1 is provided with a plurality of locking grooves 7 along the height direction, and the locking grooves 7 can be used to pass the safety rope 18 .

[0113] By setting a locking groove 7 along the height direction on the second side frame 101 of the suspension frame 1, a height-matched locking groove 7 can be selected according to the different height requirements of maintenance personnel to pass the safety rope 18, and the safety rope 18 is connected to the maintenance operator. The safety of the maintenance operator can be further improved by using the safety rope 18.

[0114] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0115] The above-mentioned various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0116] The above are only a few embodiments of the present invention. Although the embodiments disclosed by the present invention are as above, the contents are only embodiments adopted for facilitating the understanding of the present invention and are not used to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modification and change in the form and details of the embodiments without departing from the spirit and scope disclosed by the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined by the attached claims.

Claims

1. A maintenance platform, characterized in that: The maintenance platform can be used in a vertical furnace, and the maintenance platform comprises: A base frame, the base frame comprising a base and a first side frame arranged on the base, the first side frame comprising a plurality of side columns arranged on the base; A suspension frame, the suspension frame comprising a suspension ceiling and a second side frame connected to the suspension ceiling and capable of telescopic movement in a height direction relative to the first side frame; A height adjustment structure, the height adjustment structure is arranged between the base frame and the suspension frame, the height adjustment mechanism comprises: a first matching piece fixed to the first side frame, a second matching piece fixed to the second side frame, and a height operating piece for driving the first matching piece and the second matching piece to move relative to each other, when the height operating piece is operated, the relative height position of the base frame and the suspension frame can be adjusted; An expansion frame, the expansion frame is movably connected to the base frame, and the expansion frame can move relative to the base frame in a horizontal direction; the expansion frame has a working position extending out of the base frame and a non-working position received in the base frame; A circumferentially rotating regulating part is arranged on the expansion frame. When the expansion frame is in the working position, the circumferentially rotating regulating part can contact the vertical furnace to drive the maintenance platform to rotate circumferentially.

2. The maintenance platform according to claim 1, characterized in that: The base comprises a surrounding frame and a bottom wall located on the surrounding frame. A receiving cavity is arranged in the base. The size and structure of the receiving cavity are matched with the size and structure of the expansion frame.

3. The maintenance platform according to claim 2, characterized in that: A guide mechanism is arranged between the expansion frame and the base, and the guide mechanism comprises a slide rail and a slide groove. One of the expansion frame and the base frame is provided with the slide rail, and the other of the expansion frame and the base frame is provided with the slide groove.

4. The maintenance platform according to claim 2 or 3, characterized in that: There are multiple expansion frames, and multiple accommodating cavities matching the expansion frames are arranged on the base at intervals along the height direction. The multiple expansion frames move in different directions relative to the base frame.

5. The maintenance platform according to claim 1, characterized in that: The expansion frame includes a first expansion frame and a second expansion frame. The outline of the base frame is square. The base frame has a first side and a second side relative to each other, and a third side and a fourth side relative to each other. A first accommodating cavity for accommodating the first expansion frame and a second accommodating cavity for accommodating the second expansion frame are provided in the base. The first accommodating cavity has a first opening formed on the first side, and the second accommodating cavity has a second opening formed on the second side. The structure of the first opening is adapted to the end face of the first expansion frame; the cross-sectional structure of the second opening is adapted to the end face of the second expansion frame. When the first expansion frame and the second expansion frame move in opposite directions respectively, the horizontal size of the maintenance platform can reach the maximum.

6. The maintenance platform according to claim 1, characterized in that: The maintenance platform also includes an expansion positioner, which is used to limit the expansion frame relative to the base frame when the expansion frame extends out of the base frame to reach the working position.

7. The maintenance platform according to claim 6, characterized in that: The expansion positioner includes: an adjustment rod fixed on the base frame, an expansion operating part arranged at one end of the adjustment rod, and a supporting part arranged at the other end of the adjustment rod. By adjusting the expansion operating part, the supporting part can be close to or away from the expansion frame.

8. The maintenance platform according to claim 7, characterized in that: The abutting portion is an elastic limiting block.

9. The maintenance platform according to claim 1, characterized in that: The first mating member includes a worm wheel, the second mating member includes a worm assembly, the worm assembly includes a first worm and a second worm arranged in parallel at a predetermined distance; the worm wheel is arranged between the first worm and the second worm, and meshes with the first worm and the second worm respectively.

10. The maintenance platform according to claim 9, characterized in that: The second side frame is a hollow rectangular frame having a first side wall and a second side wall opposite to each other, and a third side wall and a fourth side wall opposite to each other. The first worm gear is arranged close to the first side wall, and the second worm gear is arranged close to the second side wall. The third side wall and the fourth side wall are provided with a plurality of spaced-apart positioning grooves along the height direction. The maintenance platform also includes a height positioning device adapted to the positioning groove. The height positioning device cooperates with the positioning groove to limit the movement of the base frame relative to the suspension frame.

11. The maintenance platform according to claim 10, characterized in that: The first matching piece is arranged at a position close to the top of the first side frame, the cross-section of the first side frame is smaller than the cross-section of the second side frame, the first side frame at least partially extends into the second side frame, the height stopper includes a spring, and the first stopper block and the second stopper block are respectively arranged at both ends of the spring, the first stopper block and the second stopper block are inserted into the stopper groove, at least part of the first stopper block protrudes from the third side wall, and at least part of the second stopper block protrudes from the fourth side wall, when relative forces are applied to the first stopper block and the second stopper block, the spring can be compressed, the first stopper block and the second stopper block can be moved into the second side frame, and the base frame and the suspension frame can move relatively.

12. The maintenance platform according to claim 1, characterized in that: The second side frame of the suspension frame is provided with a plurality of clamping grooves along the height direction, and the clamping grooves can be used for passing safety ropes.

13. The maintenance platform according to claim 9, characterized in that: The two ends of the first worm and the second worm are respectively provided with a pad and a roller bearing. The pad is annular, the inner diameter of the pad is greater than or equal to the inner diameter of the roller bearing, and the outer diameter of the pad is less than or equal to the outer diameter of the roller bearing.

14. The maintenance platform according to claim 1, characterized in that: The suspended ceiling is provided with a plurality of hanging ears, and the plurality of hanging ears are located at positions where the suspended ceiling is connected to the second side frame.

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