A device for overhauling and maintaining the air part of a hoisting equipment

Abstract

The utility model relates to bridge -gate machine equipment maintenance technical field, concretely discloses a hoisting equipment temporary space maintenance device, including detachable installation fixed support device on the track of bridge -gate type hoisting equipment, install fixed support device on fixed support device and with fixed support device along the track long direction sliding cooperation's suspension sliding mechanism and install maintenance cage of suspension sliding mechanism on, the suspension sliding mechanism includes the sliding device of fixed support device sliding cooperation, install suspension support frame on the sliding device, in use, the maintenance cage is located suspension support frame far away from the one side of bridge -gate type hoisting equipment and forms the maintenance room with suspension support frame cooperation. The utility model can slide to the temporary space and carry out the maintenance, provide safe, reliable work environment for staff, improve work efficiency, reduce the labor intensity, save the production cost.

Description

Technical Field

[0001] This utility model patent belongs to the field of bridge crane equipment inspection and maintenance technology, and in particular relates to an inspection and maintenance device for the air-to-ground parts of lifting equipment, which is applicable to the inspection and maintenance of wheels, bearings and auxiliary facilities of air-to-ground parts of bridge cranes, gantry cranes and other lifting equipment. Background Technology

[0002] Machine shops, large warehouses, and hydroelectric power plant buildings are equipped with cranes such as bridge cranes and gantry cranes for hoisting and maintaining workpieces, equipment, and gates. The trolley and gantry crane traveling mechanisms consist of wheels, reducers, brakes, and other components. Workers need to regularly maintain and inspect these components. Because the inner side of the trolley and gantry crane tracks is an open surface, and due to their structural limitations, direct work on the track platform is not possible (e.g.,...). Figure 1 The inspection and maintenance of wheels and bearings in the trolley and crane traveling mechanisms are characterized by high difficulty, high risk, and long work cycles, posing a significant challenge to maintenance personnel. Therefore, the rationality of the structure of the inspection and maintenance device directly affects whether the maintenance and repair of such equipment can be carried out safely and efficiently, ensuring the normal operation of the lifting equipment.

[0003] Currently, the following two methods are mainly used for the maintenance and repair of the overhead parts of the trolley and gantry cranes: First, scaffolding is erected below the target maintenance facility as a maintenance platform. Since the trolley and gantry cranes are located high above the ground, the scaffolding construction is extensive and time-consuming, requiring significant manpower and resources and resulting in low work efficiency. Second, temporary maintenance cages or aerial work platforms are suspended at the target maintenance location. However, due to limited space, maintenance personnel cannot directly face the maintenance position. When it is necessary to replace bearings, bolts, or other parts, workers need to lean out, which poses a high safety risk and results in low work efficiency.

[0004] Therefore, in order to solve the problems of long work cycles, large investment of manpower and material resources, low work efficiency and high safety risks in the existing operation methods, we have developed a maintenance device for the air-to-ground parts of lifting equipment, based on the on-site work conditions, to ensure that maintenance operations for the air-to-ground parts of lifting equipment can be carried out safely and efficiently. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a device for the inspection and maintenance of the air-supported parts of lifting equipment;

[0006] The solution adopted by this utility model to solve the technical problem is:

[0007] on the one hand:

[0008] This utility model provides a maintenance device for the air-to-ground parts of a lifting equipment, including a fixed support device that can be detachably installed on the track of a bridge gantry crane, a suspension sliding mechanism installed on the fixed support device and slidingly cooperating with the fixed support device along the long direction of the track, and a maintenance cage installed on the suspension sliding mechanism.

[0009] The suspension sliding mechanism includes a sliding device that slides in cooperation with the fixed support device and a suspension support frame mounted on the sliding device;

[0010] In use, the maintenance cage is located on the side of the suspension support frame away from the bridge gantry crane and cooperates with the suspension support frame to form a maintenance room.

[0011] In some possible implementations, the fixed support device includes a slide rail arranged parallel to the track and located outside the gantry crane, and fasteners connected to the slide rail and the track respectively.

[0012] The fixing components are at least two sets and are arranged along the length of the slide rail.

[0013] In some possible implementations, the fastener includes a fixing clip that engages with the rail and fixing bolts for securing the fixing clip to the rail; the fixing clip has a slot with an opening facing downwards that engages with the rail; the side of the fixing clip away from the gantry crane is connected to the rail.

[0014] In some possible implementations, a mounting structure for mounting slide rails is provided on the side of the fixing clip away from the gantry crane.

[0015] The mounting structure includes a mounting groove on the fixing card for mounting the slide rail, a limiting block on the outside of the slide rail for restricting the slide rail from moving along its axial direction, and a locking pressure plate mounted on the fixing card and located on the mounting groove.

[0016] In some possible implementations, the sliding device includes a roller that slides with the slide rail, a U-shaped connecting plate for mounting the roller and connected to the suspension support frame, and a rotary locking pin mounted on the U-shaped connecting plate for locking the U-shaped connecting plate and the slide rail; a groove is formed between the roller and the suspension support frame for the slide rail to pass through; one end of the rotary locking pin is located in the groove.

[0017] In some possible implementations, the sliding device is at least two sets and is connected to the suspension support frame.

[0018] In some possible implementations, the suspension support frame includes a bracket, a connecting plate disposed at one end of the bracket and connected to a sliding device, and a follower mounted on the bracket and slidingly engaged with the outer side of the gantry crane device.

[0019] In some possible implementations, the follower includes a follower frame mounted on a support and a follower wheel mounted on the follower frame and slidingly engaged with the outer side of the gantry crane assembly.

[0020] In some possible implementations, the maintenance cage includes a bottom platform connected to a support, and a fence component connected to both the bottom platform and the support; the fence component has a U-shaped cross-section, with its opening side located near the support; and a kick plate is provided on the bottom platform.

[0021] on the other hand:

[0022] A method for using the above-described inspection and maintenance device for the air-cushioned parts of lifting equipment specifically includes the following steps:

[0023] Step S1: Assemble the fixed support device and the track;

[0024] Step S2: Assemble the fixed support device and the suspension sliding mechanism on the track platform of the bridge gantry crane;

[0025] Step S3: Assemble the suspension sliding mechanism and maintenance cage on the track platform of the gantry crane to form a combined unit;

[0026] Step S4: Rotate the assembly around the axis of the track so that the assembly is in a vertical position, and the maintenance personnel enter the maintenance cage;

[0027] Step S5: Control the maintenance cage to move along the axial direction of the track and reach the maintenance location in the air. Lock the sliding device to the track, and maintenance work can be carried out.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] In this utility model, the fixed support device serves as the support and fixing structure for the entire device, connecting the entire device to the track of the bridge gantry crane and serving as the running track for the suspended sliding device, providing sufficient maintenance travel and range for the overhead maintenance parts.

[0030] The suspended moving mechanism in this utility model connects the maintenance cage to the fixed support device, enabling the maintenance cage to rotate between the bridge gantry crane track platform and the air-filled position, and slide along the support rod of the fixed support device to reach the position that needs maintenance.

[0031] In this utility model, the maintenance cage is quickly assembled from multiple components, providing a safe and reliable construction platform for workers;

[0032] Compared with the prior art, this utility model eliminates the need for a full-span scaffolding to serve as a maintenance platform. The maintenance device has a simple structure, light weight, quick assembly and disassembly, and convenient transportation. It can be quickly assembled at a safe position on the track platform according to maintenance needs. After assembly, it can be slid to the air-filled part of the crane's trolley and crane mechanism for maintenance, providing workers with a safe and reliable working environment, improving work efficiency, reducing labor intensity, and saving production costs. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of this utility model;

[0034] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0035] Figure 3 This is a schematic diagram of the suspension sliding mechanism in this utility model;

[0036] Figure 4 This is a schematic diagram of the sliding device in this utility model;

[0037] Figure 5 This is a schematic diagram of the suspension support frame in this utility model;

[0038] Figure 6 This is a schematic diagram of the maintenance cage in this utility model;

[0039] Figure 7 This is a schematic diagram showing the connection between this utility model and the track and track platform during maintenance;

[0040] Figure 8 This is a schematic diagram of the structure of the present invention after assembly;

[0041] in:

[0042] 1. Fixed support device;

[0043] 11. Fasteners;

[0044] 111. Fixing clip; 112. Fixing bolt; 113. Clip slot;

[0045] 12. Slide rail;

[0046] 13. Installation structure;

[0047] 131. Limiting block; 132. Locking pressure plate;

[0048] 2. Suspension sliding mechanism;

[0049] 21. Sliding device;

[0050] 211. Roller; 2111. Wheel body; 2112. Support plate; 212. U-shaped connecting plate; 2121. Vertical plate; 2122. Base plate; 2123. Slide groove; 213. Rotary locking pin;

[0051] 22. Suspension support frame;

[0052] 221. Bracket; 222. Connecting plate; 223. Follower; 2231. Follower frame; 2232. Follower wheel;

[0053] 3. Inspection cage; 31. Bottom platform; 32. Fence components; 321. Fence; 33. Kickboard;

[0054] 100. Track. Detailed Implementation

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] The present invention will now be described in detail.

[0057] It should be noted that in this utility model, the direction of movement of the suspension sliding mechanism 2 is the X-axis direction, that is, the length direction of the track 100 is the X-axis direction; the maintenance cage 3 is in a vertical state along the Z-axis direction when in use.

[0058] like Figures 1-8 As shown:

[0059] on the one hand:

[0060] This utility model provides a maintenance device for the air-to-ground parts of a lifting equipment, including a fixed support device 1 that can be detachably installed on the track 100 of a bridge gantry crane, a suspension sliding mechanism 2 installed on the fixed support device 1 and slidingly cooperating with the fixed support device 1 along the length of the track 100, and a maintenance cage 3 installed on the suspension sliding mechanism 2.

[0061] The suspension sliding mechanism 2 includes a sliding device 21 that slides with the fixed support device 1 and a suspension support frame 22 mounted on the sliding device 21;

[0062] In use, the maintenance cage 3 is located on the side of the suspension support frame 22 away from the bridge gantry crane, and the two together form a maintenance room.

[0063] Specifically, during assembly, the fixed support device 1 is first installed on the track 100, and then the sliding device 21 is installed so that the sliding device 21 can move along the X-axis; then the sliding device 21 is connected to the suspension support frame 22, and after the sliding device 21 and the suspension support frame 22 are assembled, the maintenance cage 3 is installed.

[0064] After assembly, maintenance personnel will enter the maintenance room and control the maintenance cage 3 and the suspension sliding mechanism 2 to move along the X-axis. After moving to the maintenance point, the sliding device 21 and the fixed support device 1 will be locked and fixed, and maintenance work can be carried out.

[0065] Compared with existing technologies, this utility model will provide workers with a safe and reliable working environment, improve work efficiency, reduce labor intensity, and save production costs.

[0066] In some possible implementations, in order to effectively achieve the sliding engagement between the sliding device 21 and the fixed support device 1, the fixed support device 1 includes a slide rail 12 that is parallel to the track 100 and located outside the bridge gantry crane and parallel to the track 100 along the X-axis direction, and a fixing member 11 that is connected to the slide rail 12 and the track 100 respectively.

[0067] The fixing members 11 are at least two sets, and are arranged along the length direction of the slide rail 12;

[0068] The fixing member 11 is used to fix the track 100 and the slide rail 12, so that the slide rail 12 is fixed relative to the track 100. The sliding device 21 slides along the slide rail 12, thereby realizing the slide rail 12 sliding relative to the track 100, so that the maintenance cage 3 can slide along the track 100 to the designated position for maintenance work.

[0069] In some possible implementations, in order to effectively achieve a detachable connection between the fixing member 11 and the rail 100, thereby enabling the device to be reused, the fixing member 11 includes a fixing clip 111 that engages with the rail 100 and a fixing bolt 112 for fixing the fixing clip 111 to the rail 100; the fixing clip 111 is provided with a slot 113 that opens downward and engages with the rail 100; the side of the fixing clip 111 away from the bridge gantry crane is connected to the slide rail 12.

[0070] Specifically, the opening of the slot 113 faces downwards, and the fixing bolt 112 is located on the side of the fixing card 111 away from the slide rail 12 with one end extending into the slot 113. During assembly, the fixing card 111 is installed from above the track 100, so that the bottom surface of the slot 113 contacts the top surface of the track 100. Then, the fixing card 111 is moved in the Y-axis direction, so that the inner side of the slot 113 near the slide rail 12 contacts and abuts against the outer side of the track 100. Then, the fixing bolt 112 passes through the inner side of the slot 113 away from the slide rail 12 and contacts and abuts against the track 100, thereby fixing the fixing card 111 to the track 100.

[0071] Furthermore, an arc-shaped protrusion is provided on the inner side of the card slot 113 near the slide rail 12; the protrusion will make it more convenient and efficient to fix the card 111.

[0072] In some possible implementations, a mounting structure 13 for mounting the slide rail 12 is provided on the side of the fixing clip 111 away from the bridge gantry crane.

[0073] The mounting structure 13 includes a mounting groove on the fixing card 111 for mounting the slide rail 12, a limiting block 131 on the outside of the slide rail 12 for restricting the slide rail 12 from moving along its axial direction, and a locking pressure plate 132 mounted on the fixing card 111 and located on the mounting groove; the locking pressure plate 132 has a groove on the side near the mounting groove, the groove and the mounting groove cooperate to form a through groove, the slide rail 12 is located in the through groove and abuts against the inner side of the through groove.

[0074] Furthermore, the opening of the mounting groove faces upward, and there are two sets of limiting blocks 131. After the slide rail 12 is installed in the mounting groove, the two sets of limiting blocks 131 will be located outside the mounting groove and cooperate with the two outer sides of the fixing card along the Y-axis to restrict the slide rail 12 from moving and sliding off along its axial direction. The locking plate 132 is installed above the fixing card 111 after the slide rail 12 is installed in the mounting groove to prevent the slider from falling off.

[0075] Specifically, when there are two sets of fixing clips 111, the two sets of fixing clips 111 cooperate with both ends of the slide rail 12 to achieve the installation of the slide rail 12;

[0076] In some possible implementations, the sliding device 21 includes a roller 211 that slides with the slide rail 12, a U-shaped connecting plate 212 for mounting the roller 211 and connected to the suspension support frame 22, and a rotary locking pin 213 mounted on the U-shaped connecting plate 212 for locking the U-shaped connecting plate 212 and the slide rail 12; a groove 2123 is formed between the roller 211 and the suspension support frame 22 for the slide rail 12 to pass through; one end of the rotary locking pin 213 is located in the groove 2123.

[0077] Preferably, the cross-sectional area of ​​the slide groove 2123 is smaller than the cross-sectional area of ​​the slide rail 12, thereby enabling the suspension connection to be achieved by the cooperation of the roller 211 and the slide rail 12.

[0078] The roller 211 includes a wheel body 2111 and two sets of support plates 2112 mounted on U-shaped connecting plates 212 and rotatably cooperating with the wheel body 2111; the wheel body 2111 is mounted on the support plates 2112 via a shaft, the axis of which is set along the Y-axis direction;

[0079] The U-shaped connecting plate 212 includes two sets of parallel vertical plates 2121 that are connected to the support plate 2112 one by one, and a base plate 2122 for mounting the two sets of vertical plates 2121 and connecting to the suspension support frame 22; the base plate 2122 and the suspension support frame 22, and the support plate 2112 and the vertical plates 2121 are all connected by bolts; a rotating locking pin 213 is installed on the vertical plate 2121 and one end extends into the slide groove 2123;

[0080] Preferably, the rotary locking pin 213 is located on the vertical plate 2121 on the side away from the track 100, which makes adjustment more convenient;

[0081] When in use, after the entire device is moved to the designated position, the control rotates the locking pin 213 to rotate and make it contact and abut against the slide rail 12, thereby locking and fixing the sliding device 21 to the slide rail 12.

[0082] Furthermore, the rotary positioning pin includes a pin rod screwed to the support plate 2112 and one end extending into the slide groove 2123, and a rotary handle disposed on the outside of the support plate 2112 and connected to the end of the pin rod away from the slide groove 2123; when the sliding device 21 is fixed to the slide rail 12, the maintenance personnel control the rotary handle to drive the pin rod to rotate, thereby causing the pin rod to move along its axial direction and abut against the outer side of the slide rail 12, thus achieving locking and fixing.

[0083] Furthermore, the wheel body 2111 is a U-shaped wheel, and the slide rail 12 is a cylindrical slide rail used in conjunction with the U-shaped wheel; the cooperation between the cylindrical slide rail and the U-shaped wheel will effectively prevent the two from separating and slipping off.

[0084] In some possible implementations, there are at least two sets of sliding devices 21 connected to the suspension support frame 22. By setting at least two sets of sliding devices 21 connected to the suspension support frame 22, it is possible to ensure that the two slide together and that the connection between the suspension support frame 22 and the slide rail 12 is stable and will not fall off.

[0085] In some possible implementations, in order to effectively support the bracket 221 and prevent swaying during movement, the suspension support frame 22 includes a bracket 221 with one end connected to the base plate 2122, a connecting plate 222 disposed at the end of the bracket 221 and connected to the base plate 2122, and a follower 223 mounted on the bracket 221 and slidingly engaged with the outer side of the bridge gantry crane.

[0086] One end of the bracket 221 is connected to the base plate 2122 via the connecting plate 222. The maintenance cage 3 is installed on the side of the bracket 221 away from the track 100, and the follower 223 is located on the side of the bracket 221 away from the maintenance cage 3.

[0087] In some possible implementations, the follower 223 includes a follower frame 2231 mounted on the bracket 221 and a follower wheel 2232 mounted on the follower frame 2231 and slidingly engaged with the outer side of the gantry crane assembly.

[0088] The follower frame 2231 is located on the side of the support 221 away from the maintenance cage 3. After the entire device is assembled, the follower wheel 2232 will come into contact with the outer side of the bridge gantry crane. The follower wheel 2232 and the follower frame 2231 rotate around the Z-axis.

[0089] Furthermore, on the outer side of the support plate 2112, reinforcing ribs are provided at the connection between the bracket 221 and the connecting plate 222.

[0090] In some possible implementations, the maintenance cage 3 includes a bottom platform 31 connected to the support 221 and a fence 32 connected to the bottom platform 31 and the support 221 respectively; the fence 32 has a U-shaped cross-section, with its opening side located on the side close to the support 221; and a kick plate 33 is provided on the bottom platform 31.

[0091] Specifically, the fence component 32 includes three sets of fences 321 with identical structures. The three sets of fences 321 are connected to form a U-shaped structure and are connected to the bottom platform 31. Each fence 321 includes two sets of vertical rods that are vertically installed on the bottom platform 31 and connected to the locking lugs on the bottom platform by bolts, and a horizontal rod for connecting the two sets of vertical rods. The vertical rods between adjacent sets of fences 321 are connected by bolts. In the two sets of fences 321 that are arranged in parallel, the vertical rods near the support 221 are provided with connecting lugs, and the support 221 is also provided with connecting seats that are connected to the connecting lugs by bolts. This configuration will effectively enable the rapid assembly of the maintenance cage 3 and the rapid assembly between the maintenance cage 3 and the support 221.

[0092] The kick plate 33 is installed on the bottom platform 31 and located in the maintenance room to prevent the tools of the workers or other objects in the maintenance room from falling.

[0093] on the other hand:

[0094] A method for using the above-described inspection and maintenance device for the air-cushioned parts of lifting equipment specifically includes the following steps:

[0095] Step S1: Assemble the fixed support device 1 with the rail 100; specifically, the fixing clip 111 is installed from above the rail 100 so that the bottom surface of the slot 113 contacts the top surface of the rail 100; then the fixing clip 111 is controlled to move in the X-axis direction so that the inner side of the slot 113 near the slide rail 12 contacts and abuts with the outer side of the rail 100; then the fixing bolt 112 passes through the inner side of the slot 113 away from the slide rail 12 and contacts and abuts with the rail 100, thereby fixing the fixing clip 111 to the rail 100;

[0096] Step S2: Assemble the fixed support device 1 and the suspension sliding mechanism 2 on the track 100 platform of the bridge gantry crane;

[0097] Step S3: Assemble the suspension sliding mechanism 2 and the maintenance cage 3 on the track 100 platform of the bridge gantry crane to complete the assembly and form a combined unit;

[0098] Step S4: Rotate the assembly away from the bridge gantry crane by rotating it around the axis of track 100, so that the assembly is in a vertical position, and the maintenance personnel enter the maintenance cage 3.

[0099] Step S5: Control the maintenance cage 3 to move along the axial direction of the track 100 and reach the maintenance position in the air. Lock the sliding device 21 to the track 100, and then the maintenance work can be carried out.

[0100] This invention greatly improves safety during the assembly process by assembling the entire device on the track 100 platform.

[0101] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. An apparatus for inspecting and maintaining an aerial part of a hoisting device, characterized in that It includes a fixed support device that can be detachably installed on the rail of a bridge gantry crane, a suspension sliding mechanism installed on the fixed support device and slidingly engaged with the fixed support device along the length of the rail, and a maintenance cage installed on the suspension sliding mechanism. The suspension sliding mechanism includes a sliding device that slides in cooperation with the fixed support device and a suspension support frame mounted on the sliding device; In use, the maintenance cage is located on the side of the suspension support frame away from the bridge gantry crane and cooperates with the suspension support frame to form a maintenance room.

2. The device for inspection and maintenance of the air area of a hoisting equipment according to claim 1, characterized in that, The fixed support device includes a slide rail arranged parallel to the track and located outside the bridge gantry crane, and fixing components connected to the slide rail and the track respectively.

3. The device for inspection and maintenance of the air area of a hoisting equipment according to claim 2, characterized in that, The fastener includes a fixing clip that engages with the rail and fixing bolts for fixing the fixing clip to the rail; the fixing clip has a slot with an opening facing downwards that engages with the rail; the side of the fixing clip away from the gantry crane is connected to the rail.

4. A maintenance and repair device for the air-cushioned parts of lifting equipment according to claim 3, characterized in that, An installation structure for mounting slide rails is provided on the side of the fixed clip away from the bridge gantry crane; The mounting structure includes a mounting groove on the fixing card for mounting the slide rail, a limiting block on the outside of the slide rail for restricting the slide rail from moving along its axial direction, and a locking pressure plate mounted on the fixing card and located on the mounting groove.

5. The apparatus of claim 1, wherein, The sliding device includes a roller that slides with the slide rail, a U-shaped connecting plate for mounting the roller and connecting it to the suspension support frame, and a rotary locking pin mounted on the U-shaped connecting plate for locking the U-shaped connecting plate and the slide rail; a groove is formed between the roller and the suspension support frame for the slide rail to pass through; one end of the rotary locking pin is located in the groove.

6. An airborne portion inspection and maintenance device for a hoisting apparatus as defined in claim 5, wherein The sliding device consists of at least two sets and is connected to the suspension support frame.

7. The apparatus of claim 1, wherein, The suspension support frame includes a bracket, a connecting plate disposed at one end of the bracket and connected to a sliding device, and a follower mounted on the bracket and slidingly engaged with the outer side of the bridge gantry crane.

8. An airborne portion inspection and maintenance device for a hoisting apparatus as defined in claim 7, wherein The follower component includes a follower frame mounted on the support and a follower wheel mounted on the follower frame and slidingly engaged with the outer side of the gantry crane.

9. The apparatus of claim 7, wherein the apparatus is a device for inspecting and maintaining an aerial part of a hoisting equipment. The maintenance cage includes a bottom platform connected to a support frame and a fence component connected to both the bottom platform and the support frame. The fence component has a U-shaped cross-section, with its opening side located near the support frame. A kickboard is provided on the bottom platform.

10. A maintenance and repair device for the air-cushioned parts of lifting equipment according to claim 2, characterized in that, The fixing components are at least two sets and are arranged along the length of the slide rail.

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