Maintenance platform

Abstract

The utility model discloses a maintenance platform which can be applied to a shaft furnace, the maintenance platform 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 used for adjusting the height of the shaft furnace. 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 utility model relates to the technical field of maintenance construction equipment, in particular to a maintenance platform. Background Art

[0002] During the maintenance and replacement of water-cooled walls or refractory linings within metallurgical blast furnaces, or when performing maintenance operations on large chimneys, vertical furnaces, and similar equipment, or between two tall structures, after removing the top parts of the equipment, workers first descend to a certain height within the furnace where the maintenance work is to be performed. Suspended mid-air in the hearth, they drill holes in the refractory bricks to create positioning holes. Positioning holes are then set at this height for a walkway platform, allowing for dangerous height-based work. The use of positioning holes to manually construct large walkways or platforms presents a risk of injury from objects striking them, falls from height, and mechanical injuries. Furthermore, existing maintenance equipment cannot be quickly replaced, reducing equipment maintenance efficiency.

[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 cause some new problems and cannot achieve ideal use effects.

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

[0005] In response to the defects of the existing technology, the embodiment of the present invention 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 increasing safety.

[0006] The specific technical solution of the embodiment of the utility model 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 provided on the base, the first side frame comprising a plurality of side columns provided 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 is provided between the base frame and the suspension frame, and includes: a first mating member fixed to the first side frame, a second mating member fixed to the second side frame, and a height operating member for driving relative movement between the first mating member and the second mating member, wherein when the height operating member is operated, the relative height position of the base frame and the suspension frame can be adjusted;

[0011] An expansion frame, the expansion frame being movably connected to the base frame and capable of moving horizontally relative to the base frame; the expansion frame having a working position extending out of the base frame and a non-working position housed in the base frame;

[0012] A circumferential rotation regulating portion is provided on the expansion frame. When the expansion frame is in the working position, the circumferential rotation regulating portion 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. 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, and 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 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, and 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, 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 the maximum.

[0017] In a preferred embodiment, the maintenance platform further 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.

[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 having 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 is arranged close to the first side wall, and the second worm 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 positioner adapted to the positioning groove. The height positioner 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 two ends of the spring are respectively provided with a first stop block and a second stop block, the first stop block and the second stop block are inserted into the stop groove, at least part of the first stop block protrudes from the third side wall, and at least part of the second stop block protrudes from the fourth side wall, when the first stop block and the second stop block are applied with relative forces, the spring can be compressed, the first stop block and the second stop block can be moved into the second side frame, and the base frame and the suspension frame can move relative to each other.

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

[0024] In a preferred embodiment, a pad and a roller bearing are respectively provided at both ends of the first worm and the second worm, 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.

[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 the position where the suspended ceiling is connected to the second side frame.

[0026] The technical solution of the utility model has the following significant beneficial effects:

[0027] The maintenance platform provided in the embodiment 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 high safety.

[0028] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating how the principles of the present invention can be employed. 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 variations, modifications, and equivalents. Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. Furthermore, the shapes and proportional dimensions of the components in the drawings are for illustrative purposes only and are intended to facilitate understanding of the present invention. They are not intended to limit the shapes and proportional dimensions of the components of the present invention. Those skilled in the art, guided by the present invention, may select various possible shapes and proportional dimensions to implement the present invention, depending on the specific circumstances.

[0030] Figure 1 This is a structural diagram of a maintenance platform provided in an embodiment of the present application;

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

[0032] Figure 3 for Figure 2 A partial enlarged schematic diagram of point A in the middle;

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

[0034] Figure 5 This is a structural diagram of a maintenance platform base frame and an expansion frame provided in an embodiment of the present application;

[0035] Figure 6 for Figure 5 Cross-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 Cross-sectional view at DD in the middle;

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

[0039] Reference numerals of this application:

[0040] 1. Suspension frame;

[0041] 101. Second side frame; 102. Lifting lug;

[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 positioner;

[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, modifications of various equivalent forms of 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 an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementations.

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

[0065] Prior art 1 discloses an automatic positioning robotic arm bridge device and a positioning method for vertical furnace maintenance, wherein the automatic positioning robotic arm bridge device includes a box-type body, a robotic arm platform, a propeller, 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 robotic arm platforms that cooperate with each other are provided on both sides symmetrically with the center line of the box-type body, the lower part of the robotic arm platform is movably hinged to a support fixed to the bottom frame of the box-type body, the upper part of the robotic arm platform is movably hinged to the front end of the propeller push rod, and the rear end of the propeller push rod is movably hinged to the frame of the box-type body, the robotic arm platforms on both sides are pushed by the propeller, unfolded from a retracted state, and cooperated with each other to form a horizontal bridge platform; the front end of the robotic arm platform is symmetrically provided with electric push rods for support inside, and symmetrically provided with electric self-tapping rotary heads outside.

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

[0067] 1) The electric self-tapping rotary head uses drilling to fix the manned maintenance platform. 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 and suffer 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 if they operate it incorrectly.

[0070] Prior art 2 discloses a telescopic platform for blast furnace overhaul, which includes a group of telescopic square tubes, each telescopic square tube is arranged in a star shape, and the midpoint is 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 easily change the platform diameter, saving time and cost, and has a significant effect in shortening the main line construction period and reducing labor. However, the utility model inventor 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 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. The device includes two semicircular foldable platforms, which are hinged together by a rotating shaft. Two lifting ear devices are respectively arranged in the table top of each platform. 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 provided on the middle part of the outer edge of one platform, and a locking buckle is correspondingly provided on the middle part 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 provided between the two. A locking pin is passed through 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 third prior art can ensure the work safety of the repair personnel of the DRI downcomer refractory material of the Ouye furnace and shorten the processing time and difficulty. However, the utility model inventor found that the third prior art 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 the 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 operation will affect the refractory structure inside the main body of the equipment.

[0079] 3) There are 4 lifting points in the operation area of ​​the maintenance platform. The lifting ropes of these lifting points interfere with the operation area, which will affect the maintenance work of maintenance personnel in some operation 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 embodiments of this application provide a maintenance platform that can be used within a shaft furnace or in similar applications, such as chimneys. The embodiments of this application primarily illustrate the use of the maintenance platform within a shaft furnace; other application scenarios can be referenced in this application.

[0082] The embodiment of 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 increasing safety.

[0083] Please refer to the comprehensive Figures 1 to 9 The maintenance platform may include: a base frame 2, the base frame 2 including a base 22 and a first side frame 21 provided on the base 22, the first side frame 21 including a plurality of side columns provided on the base 22; a suspension frame 1, the suspension frame 1 including a suspension top and a second side frame 101 connected to the suspension top and capable of telescopic movement in the height direction relative to the first side frame 21; a height adjustment structure, the height adjustment structure being provided between the base frame 2 and the suspension frame 1, the height adjustment structure including: a first matching piece fixed in the first side frame 21, a second matching piece fixed in the second side frame 101, for driving the first matching piece and The second mating 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, thereby driving the maintenance platform to rotate circumferentially.

[0084] The maintenance platform provided in the embodiment 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 setting an expansion frame 9 to expand the maintenance diameter and realizing the rotation operation of the entire maintenance platform in the circumferential direction through the circumferential rotation adjustment part, 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 structure, 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 provided on the base 22. The first side frame 21 may include a plurality of spaced-apart side columns provided on the base 22. Specifically, the base frame 2 may be square or rectangular. Of course, the base frame 2 may also be circular or other regular or irregular shapes. In the embodiments of the present application, the base frame 2 is mainly described as a square structure.

[0087] The base 22 may include a frame and a bottom wall located on the frame. The frame may be square or rectangular, with side posts disposed at each of its four corners. The base 22 may include at least one accommodating cavity, the size and configuration of which may be compatible with the size and configuration 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 guide mechanism may be provided between the expansion frame 9 and the base 22. The guide 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 the expansion frame 9 may be moved to a predetermined position relative to the base frame 2 in the horizontal direction through the guide mechanism, thereby switching the expansion frame 9 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 the expansion frame 9 may be moved in the horizontal direction toward the base frame 2 through the guide mechanism, thereby switching the expansion frame 9 from a working position to a non-working position.

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

[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 multiple 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, as well as 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 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 needed, 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 Figure 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 the maintenance operator, 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 adjusting rod fixed on the base frame 2, an expansion operating part arranged at one end of the adjusting rod, and a supporting part 16 arranged at the other end of the adjusting 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 can 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 threaded hole that matches the external thread of the screw 15. The expansion operating part can specifically be an operating handle 17 provided on one side of the base frame 2. When the operating handle 17 is rotated in one direction (for example, clockwise), the screw 15 can drive the abutting part 16 to approach the expansion frame 9, so that the abutting part 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 (for example, counterclockwise), the screw 15 can drive the abutting part 16 away from the expansion frame 9, and the abutting part 16 is disengaged from 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 a first direction relative to the base frame 2, the adjustment rod moves in a second direction relative to the expansion frame 9. The second direction may be perpendicular to the first direction. The expansion retainers 10 may be provided in two positions, and the two expansion retainers 10 may be spaced apart 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 limit block with a certain surface area. The rubber limit block utilizes its own elastic deformation ability to not only ensure a better abutting force, but also ensure that the surface of the position where the rubber limit block contacts will not be damaged.

[0099] In this embodiment, the circumferential rotation adjustment portion can be specifically in the form of a universal wheel 11, which can be located on the same side of the expansion frame 9 and the base 22 of the base frame 2 where the openings are located. When the expansion frame 9 is in the operating position, the universal wheel 11 can extend along with the expansion frame 9. When the universal wheel 11 contacts the vertical furnace, the operator applies torque to drive the entire maintenance platform to rotate circumferentially, achieving 360° circumferential maintenance angle adjustment.

[0100] In an embodiment of the present application, by setting 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 structure may include: a first mating part fixed in the first side frame 21, a second mating part fixed in the second side frame 101, and a height operating part 5 for driving the first mating part and the second mating part to move relative to each other.

[0102] In this embodiment, the first and second mating members can be specifically in the form of a combination of a worm wheel 3 and a worm. Of course, the specific forms of the first and second mating members can also be other combinations that can achieve height adjustment. In the embodiment of this application, the above-mentioned worm wheel 3 and worm are mainly used as an example for description.

[0103] In one embodiment, the first mating part may include a worm wheel 3, the second mating part may include a worm assembly 4, 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 engaged with the first worm 41 and the second worm 42 respectively.

[0104] The second side frame 101 of the suspension frame 1 may be provided with a travel groove along the height direction to facilitate the movement of the worm gear 3. Specifically, a center rod is provided at the center of the worm gear 3, which is inserted into the travel groove 8. A height operating member 5 may be provided at each end of the center rod. By operating the height operating member 5, an operator can rotate the worm gear 3, thereby moving the worm gear 3 relative to the worm, thereby adjusting the height 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 can be provided at each corner of the suspended ceiling. When in use, the suspension device can be connected to the lifting ear 102, so as to ensure that the suspension frame 1 is reliably positioned. In the embodiment of the present application, the lifting operation is performed through the suspension frame 1, thereby avoiding the interference caused by the lifting rope directly lifting the maintenance platform, 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 operator 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 stopper 6 adapted to the positioning groove 7, and the height stopper 6 cooperates with the positioning groove 7 to limit the movement of the base frame 2 relative to the suspension frame 1.

[0108] In which, 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, and the first side frame 21 at least partially extends into the second side frame 101, and 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 having a certain degree of deformation. When the detection operator presses the first stopper block 61 and the second stopper block 62, the height stopper 6 can be retracted into the second side frame 101 to be unlocked. After unlocking, the base frame 2 and the suspension frame 1 can move relative to each other by a distance separated by the stopper groove 7.

[0110] In one embodiment, a pad 12 and a roller bearing 13 are respectively provided at both ends of the first worm 41 and the second worm 42. The pad 12 is annular, and the inner diameter of the pad 12 is greater than or equal to the inner diameter of the roller bearing 13, and the outer diameter of the pad 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 positioning grooves 7 along the height direction, and the positioning grooves 7 can be used to pass the safety rope 18 .

[0113] By setting a positioning groove 7 along the height direction on the second side frame 101 of the suspension frame 1, a height-matched positioning groove 7 can be selected according to the different height requirements of the maintenance personnel to pass through the safety rope 18. The safety rope 18 is connected to the maintenance operator's body. The use of the safety rope 18 can further improve the safety of the maintenance operator.

[0114] It should be noted that, in the description of this application, the terms "first," "second," etc., are used solely for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, nor should they be understood to indicate or imply relative importance. Furthermore, in the description of this application, unless otherwise specified, "plurality" means two or more.

[0115] The above-mentioned various embodiments in this specification are described in a progressive manner. 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 in the present invention are as above, the contents are only for the purpose of facilitating the understanding of the present invention and are not intended to limit the present invention. Any person skilled in the art of the present invention may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in the present invention. However, the scope of patent protection of the present invention shall still be based on the scope defined by the appended claims.

Claims

1. A maintenance platform, characterized in that: The maintenance platform can be used in a vertical furnace, and the maintenance platform includes: A base frame, the base frame comprising a base and a first side frame provided on the base, the first side frame comprising a plurality of side columns provided 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 is provided between the base frame and the suspension frame, and includes: a first mating member fixed to the first side frame, a second mating member fixed to the second side frame, and a height operating member for driving relative movement between the first mating member and the second mating member, wherein when the height operating member is operated, the relative height position of the base frame and the suspension frame can be adjusted; An expansion frame, the expansion frame being movably connected to the base frame and capable of moving horizontally relative to the base frame; the expansion frame having a working position extending out of the base frame and a non-working position housed in the base frame; A circumferential rotation regulating portion is provided on the expansion frame. When the expansion frame is in the working position, the circumferential rotation regulating portion 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 includes a surrounding frame and a bottom wall located on the surrounding frame. A receiving cavity is provided in the base. The size and structure of the receiving cavity are adapted to the size and structure of the expansion frame.

3. The maintenance platform according to claim 2, characterized in that: A guide mechanism is provided between the expansion frame and the base, and 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.

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 that are opposite, as well as a third side and a fourth side that are opposite. 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 further 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 is engaged 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 relative to each other, and a third side wall and a fourth side wall relative to each other. The first worm is arranged close to the first side wall, and the second worm 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 positioner adapted to the positioning groove. The height positioner 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, and the first side frame at least partially extends into the second side frame. The height stopper includes a spring, and the two ends of the spring are respectively provided with a first stop block and a second stop block. The first stop block and the second stop block are inserted into the stop groove, at least part of the first stop block protrudes from the third side wall, and at least part of the second stop block protrudes from the fourth side wall. When the first stop block and the second stop block are applied with relative forces, the spring can be compressed, the first stop block and the second stop block can be moved into the second side frame, and the base frame and the suspension frame can move relative to each other.

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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