Inspection and repair methods for derailment of lifting devices and archive cabinets

Abstract

This invention relates to a lifting device and a method for repairing derailed archive cabinets, belonging to the field of cabinet lifting and repair, with the aim of achieving online repair. The lifting device includes a frame and a sliding lifting mechanism. The frame includes a base plate and side plates hinged to the left and right sides of the base plate; the side plates are provided with grooves recessed downwards from the top. The sliding lifting mechanism includes a horizontal slider, a lifting block, and a connecting rod. The bottom and top surfaces of the lifting block form smooth inclined surfaces that adapt to each other, and the lifting block is movably mounted on the horizontal slider along the inclined direction. The horizontal slider is longitudinally mounted on the base plate of the frame along the sliding channel, and the left and right ends of the lifting block are movably connected to the grooves. The frame can switch between a plate-like and groove-like shape, and with the cooperation of the horizontal slider, the lifting block, and the frame, the lifting purpose is achieved. This allows the lifting device to perform lifting operations in spaces with small gaps. Using the lifting device for repairing derailed archive cabinets enables online repair, is highly efficient, and saves manpower and resources.

Description

Technical Field

[0001] This invention belongs to the field of cabinet lifting and maintenance, specifically the method for repairing derailed lifting devices and archive cabinets. Background Technology

[0002] Companies typically have an archive room, which often contains multiple rows of hand-cranked vertical filing cabinets. These cabinets are controlled by multiple lightweight rails laid on the track surface, with a handle at the end of each row moving the cabinet back and forth along the rails, thus allowing access to all the shelves within the cabinet.

[0003] Normally, all rollers at the bottom of a cabinet should have T-shaped or H-shaped flanges to prevent derailment. However, some older cabinets, in order to save costs, only have flanged rollers on the two end rails, while the rollers on the middle rail are not flanged. During use, the middle rollers are very prone to derailment.

[0004] In the use of archive cabinets, various documents and materials are usually placed in order. If a roller goes off the track, causing a row of cabinets to tilt and get stuck, normally there is a gap of about 0.8m between the cabinets. If the derailed cabinet gets stuck between the cabinets on both sides, the operating space left for the surrounding cabinets is only about 0.4m, which is very narrow. This seriously affects the storage and retrieval of materials in the archive cabinets side by side, causing great trouble and even serious personal injury accidents.

[0005] If the rollers of a file cabinet in the archives derail, immediate repair is required. When this type of file cabinet derails and becomes stuck, the gap between the bottom of the cabinet and the track surface is less than 3cm, and the load-bearing frame is encased in sheet metal, rendering jacks unusable. The only solution is to dispatch a large number of personnel to remove all documents from the cabinet, clear the obstructed area, and once the weight is reduced, use crowbars to lift the cabinet, then use a hammer to straighten the misaligned rollers, and finally move the documents back into place. This method requires multiple people working together, is time-consuming and labor-intensive, and is prone to causing chaos during document handling, which is highly detrimental to the normal management of the archives. Summary of the Invention

[0006] The purpose of this invention is to solve the drawback of traditional archive cabinet maintenance, which requires clearing all the data on the cabinet, and to provide a lifting device and archive cabinet derailment maintenance method to achieve online maintenance.

[0007] The technical solution adopted in this invention is a lifting device, comprising a frame and a sliding lifting mechanism. The frame includes a base plate and side plates on the left and right sides of the base plate. The bottom ends of the side plates are hinged to the base plate, forming a sliding channel with an open top and longitudinal continuity, surrounded by the base plate and the side plates. A locking structure for locking the relative position of the side plates and the base plate is provided. A groove is provided on the side plate, recessed downwards from the top. The sliding lifting mechanism includes a horizontal slider, a lifting block, and a connecting rod. The top surface of the horizontal slider is a supporting surface, the bottom surface of the lifting block is a mating surface, and the top surface of the lifting block is a horizontally positioned lifting surface. The supporting surface and the mating surface form a smooth inclined plane that adapts to each other. Along the inclined direction, the mating surface of the lifting block is movably positioned on the supporting surface of the horizontal slider. One end of the connecting rod is connected to the horizontal slider, and the other end is a force-applying end. The horizontal slider is located within the sliding channel and is movably positioned on the base plate of the frame along the longitudinal direction of the sliding channel. The left and right ends of the lifting block are respectively inserted into the corresponding grooves on the side plates, and the lifting block is movably connected to the grooves along the vertical direction.

[0008] Furthermore, the horizontal slider includes a support plate and a vertical plate. The vertical plate is vertically installed on the support plate, and the top surface of the vertical plate is a support surface. A guide groove adapted to the vertical plate is provided on the mating surface of the lifting block at a position corresponding to the vertical plate. The guide groove extends longitudinally through both ends of the lifting block. The vertical plate is inserted into the guide groove and movably engages with the guide groove.

[0009] Furthermore, the upright plate is disposed on the inner side of the left and right edges of the support plate, and the top surface of the support plate located on the outer side of the upright plate forms a limiting surface; a limiting protruding rib extending longitudinally is provided on the inner side of the side plate, and the support plate is disposed between the limiting protruding rib and the bottom plate, and the support plate is vertically limited by the cooperation of the limiting protruding rib and the limiting surface.

[0010] Furthermore, a longitudinally extending bottom ridge is provided on the bottom surface of the tray.

[0011] Furthermore, a longitudinally widened flange is provided at the center of the top of the lifting block; and limiting protrusions are provided at the front and rear ends of the left and right sides of the lifting block in the transverse direction, wherein the limiting protrusions extend vertically from the top surface of the lifting block through the bottom surface of the lifting block.

[0012] Furthermore, a T-slot is provided in the middle of the pallet, and a T-head is provided at one end of the connecting rod. The T-head is connected to the T-slot, and a baffle is provided at the top of the T-slot to prevent the T-head from being pulled out.

[0013] Furthermore, an end plate is provided at the front end of the base plate, and the bottom end of the end plate is hinged to the front end of the base plate; a U-shaped groove is provided on the end plate, which is recessed downward from the top; a rib plate is hinged to the left and right sides of the end plate respectively, and the other end of the rib plate connected to the end plate is provided with a vertical through-hole 1; a through-hole 2 is provided on the base plate corresponding to the through-hole 1; a U-shaped pin is provided between the two rib plates, and the U-shaped pin is inserted into both the through-hole 1 and the through-hole 2; the force-applying end of the connecting rod is L-shaped, including an upwardly bent force-applying plate, and a threaded hole is provided in the middle of the force-applying plate; a rocker mechanism is provided between the connecting rod and the end plate, and the rocker mechanism includes a large-end screw and a rocker arm. One end of the screw of the large-end screw is threadedly connected to the threaded hole of the force-applying plate, and the other end is connected to the large head. The large head of the large-end screw is provided with a through hole, and the rocker arm can be detachably inserted into the through hole; the large head of the large-end screw is locked in the U-shaped groove of the end plate.

[0014] Furthermore, the locking structure includes a locking plate, with an insertion port at the top of the side plate at a corresponding position, and the locking plate can be detachably inserted into the insertion ports of the two side plates.

[0015] The method for repairing derailed vertical cabinets in the archives room using the aforementioned lifting device.

[0016] Step 1: Remove the bottom panel of the cabinet at the derailment location to expose the derailment rollers;

[0017] Step 2: After flattening the frame, insert the end of the frame with the side panel under the cabinet through the gap between the bottom of the cabinet and the track surface.

[0018] Step 3: Place the horizontal slider on the bottom plate of the frame. Then, rotate the side plate of the frame to make it stand up and make the limiting protrusion strip on the inside of the side plate lock the horizontal slider.

[0019] Step 4: Insert the T-head of the connecting rod through the gap from the outside of the cabinet, and wedge the T-head into the T-slot of the horizontal slider and pull it outward so that the T-head is wedged into the T-slot baffle.

[0020] Step 5: Install the card into the slot on the side panel;

[0021] Step 6: Push the horizontal slider to the very end of the frame, then match the lifting block with the horizontal slider and place it into the groove on the side plate of the frame;

[0022] Step 7: Install the joystick mechanism;

[0023] Step 8: Move the entire lifting device to directly below the cabinet support beam, turn the rocker arm, slowly raise the lifting block, lift the cabinet support beam, and drive the rollers to lift.

[0024] Step 9: After the roller is raised to the appropriate position, hammer the roller so that it is directly above the track.

[0025] Furthermore, in step nine, if the roller lifting height is still insufficient when the lifting block reaches its limit position, a square pad is placed in the gap between the top of the side panel and the cabinet support beam. Then, the rocker arm is moved in the opposite direction to slowly lower the cabinet support beam. Once it is fully supported by the square pad on the side panel of the lifter, the lifting block is quickly lowered to the bottom. Then, a square pad is placed on the lifting block, and the lifting process of step eight is repeated until the roller is raised to the appropriate position.

[0026] The beneficial effects of this invention are as follows: The lifting device disclosed in this invention uses a hinged connection between the base plate and side plates of the frame, allowing the frame to switch between a plate-like and a groove-like shape. This enables the frame to be inserted into narrow spaces such as under cabinets in archives for operation. Through the cooperation of the horizontal slider, the lifting block, and the frame, the horizontal linear motion of the horizontal slider is converted into the vertical linear motion of the lifting block, achieving the lifting purpose. Therefore, the lifting device disclosed in this invention can perform lifting operations in spaces with small gaps, demonstrating good adaptability.

[0027] The present invention discloses a method for repairing derailed cabinets in archives. It uses a lifting device to restore the derailed cabinets online without having to empty the documents on them, which greatly improves the efficiency of derailment restoration and avoids the process of moving documents, thus saving manpower and resources. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the frame structure of the jacking device;

[0029] Figure 2 A schematic diagram of the sliding lifting device of the jacking unit;

[0030] Figure 3 This is a schematic diagram of the horizontal slider structure;

[0031] Figure 4 This is a schematic diagram of the rocker mechanism.

[0032] Figure 5 This is a schematic diagram of the lifting device structure;

[0033] Figure 6 A schematic diagram showing the jack being flattened and placed under the upright;

[0034] Figure 7 This is a schematic diagram of the lifting device operation.

[0035] In the diagram, the components are: base plate 1, insertion hole 2 1A, side plate 2, sliding groove 2A, insertion port 2B, limiting ridge strip 2C, end plate 3, U-shaped groove 3A, ridge plate 4, insertion hole 1 4A, clamping plate 5, U-shaped pin 6, baffle 8, horizontal slider 9, support plate 91, limiting surface 91A, bottom ridge strip 91B, T-slot 91C, upright plate 92, lifting block 10, flange 10A, guide groove 10C, limiting ridge strip 10B, connecting rod 11, T-head 11A, force plate 11B, threaded hole 11C, large end screw 12, rocker arm 13, roller 14, track surface 15, and cabinet 16. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0037] In this invention, the terms "longitudinal," "lateral," "vertical," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the purpose of describing the present invention only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0038] Lifting device, such as Figure 5 As shown, it includes a frame and a sliding lifting device; as Figure 1 As shown, the frame includes a base plate 1 and side plates 2 respectively disposed on the left and right sides of the base plate 1. The bottom ends of the side plates 2 are hinged to the base plate 1, forming a sliding channel with an open top and extending longitudinally, surrounded by the base plate 1 and the side plates 2. A sliding lifting device slides within the sliding channel, which extends longitudinally, also in the front-to-back direction shown in the figure. The side plates 2 are hinged to the base plate 1 and can rotate along a pin-like hinge, allowing them to rotate until they are on the same plane as the base plate 1. This facilitates inserting the frame under the archive cabinet through the gap in the cabinet's bottom surface. Once inserted, the side plates 2 can be rotated to form a sliding channel between them, allowing for the placement of maintenance tools without moving the archive cabinet. A locking structure is provided to lock the relative position of the side plates 2 and the base plate 1, preventing relative rotation between them. A groove 2A is provided on the side plate 2, which is recessed downward from the top. The groove 2A serves to guide the vertical movement of the sliding lifting device.

[0039] Because the bottom clearance of the archive cabinets is small, directly using hydraulic jacks or similar mechanisms is not conducive to proper placement and is also inconvenient to operate. In this invention, as... Figure 2As shown, the sliding lifting device includes a horizontal slider 9, a lifting block 10, and a connecting rod 11. The top surface of the horizontal slider 9 is a supporting surface, and the bottom surface of the lifting block 10 is a mating surface. The top surface of the lifting block 10 is a horizontally positioned lifting surface, which directly contacts the bottom of the archive cabinet to lift it. The supporting surface and the mating surface form a smooth inclined plane that adapts to each other. Along the inclination direction of the inclined plane, the mating surface of the lifting block 10 is movably positioned on the supporting surface of the horizontal slider 9. That is, the vertical position of the lifting block 10 changes due to the relative movement between the lifting block 10 and the horizontal slider 9. One end of the connecting rod 11 is connected to the horizontal slider 9, and the other end is the force-applying end. The connecting rod 11 serves to move the horizontal slider 9.

[0040] The horizontal slider 9 is located within the sliding channel and is movably mounted on the base plate 1 of the frame along the longitudinal direction of the sliding channel. The left and right ends of the lifting block 10 are respectively inserted into the corresponding sliding grooves 2A on the side plate 2, and the lifting block 10 is movably connected to the sliding grooves 2A vertically. Since the lifting block 10 is within the sliding grooves 2A, its movement trajectory is limited by the sliding grooves 2A, allowing it to move only vertically. The horizontal slider 9 moves horizontally on the base plate 1. With the supporting surface and the mating surface forming a smooth inclined plane that adapts to each other, the horizontal movement of the horizontal slider 9 is converted into the vertical movement of the lifting block 10 within the sliding grooves 2A. During the lifting process, the lifting block 10 lifts the archive cabinet, facilitating maintenance. Furthermore, during the lifting process, only the horizontal slider 9 needs to be driven to move horizontally in a straight line, avoiding the limitations of confined space.

[0041] The horizontal slider 9 can be a right triangular prism with two sides perpendicular to each other, placed horizontally, with the other side serving as a support surface. In this invention, to simplify the structure, preferably, as shown below... Figure 3 As shown, the horizontal slider 9 includes a support plate 91 and a vertical plate 92. The vertical plate 92 is vertically mounted on the support plate 91, and its top surface serves as a support surface. Compared to directly using a solid block structure, the horizontal slider 9, constructed using the support plate 91 and the vertical plate 92, is lighter, easier to use, saves materials, and is also easier to manufacture.

[0042] To prevent the horizontal slider 9 from warping during movement, preferably, the vertical plate 92 is located on the inner side of the left and right edges of the support plate 91, and the top surface of the support plate 91 located on the outer side of the vertical plate 92 forms a limiting surface 91A. Here, "inner side" and "outer side" refer to the relative positional relationship. Along the transverse direction of the support plate 91, the part closer to the middle area of ​​the support plate 91 is the "inner side", and the part farther away from the middle area of ​​the support plate 91 is the "outer side".

[0043] The inner side of the side plate 2 refers to the side of the side plate 2 that serves as the inner wall of the sliding channel when the side plate 2 is standing on the base plate 1. A limiting protrusion 2C extending longitudinally is provided on the inner side of the side plate 2. The support plate 91 is disposed between the limiting protrusion 2C and the base plate 1. The limiting protrusion 2C and the limiting surface 91A cooperate to form a vertical limit on the support plate 91.

[0044] In order to guide the relative movement of the lifting block 10 and the horizontal slider 9 and prevent deviation between them, preferably, a guide groove 10C adapted to the vertical plate 92 is provided on the mating surface of the lifting block 10 at the position corresponding to the vertical plate 92. The guide groove 10C extends longitudinally through both ends of the lifting block 10, and the vertical plate 92 is inserted into the guide groove 10C and movably engages with the guide groove 10C.

[0045] To reduce the frictional force when the pallet 91 slides on the base plate 1, preferably, a bottom ridge 91B extending longitudinally is provided on the bottom surface of the pallet 91. Typically, two bottom ridges 91B are provided, one on the left and one on the right.

[0046] To increase the lifting contact area, preferably, a longitudinally widened flange 10A is provided at the middle of the top of the lifting block 10.

[0047] To position the lifting block 10 laterally and prevent it from slipping out of the slide groove 2A, limiting protrusions 10B are provided at the front and rear ends of the left and right sides of the lifting block 10 laterally. The limiting protrusions 10B extend vertically from the top surface of the lifting block 10 through its bottom surface. The limiting protrusions 10B can be engaged with the inner side of the side plate 2, thus providing a limiting function.

[0048] The connecting rod 11 and the support plate 91 can be connected by welding. Preferably, a T-slot 91C is provided in the middle of the support plate 91. The T-slot 91C is formed by a recess along the longitudinal direction of the support plate 91 from the front end to the rear end, including a transversely extending groove and a longitudinally extending groove. The longitudinal groove and the transverse groove connect in the middle to form a T-shaped T-slot 91C. Baffles 8 are respectively provided on both sides of the longitudinal groove on the top surface of the support plate 91. The baffles 8 are located at the junction of the longitudinal groove and the transverse groove. After the T-head 11A is engaged in the T-slot 91C, when the T-head 11A is pulled forward longitudinally, the baffles 8 abut against the end face of the T-head 11A, thus limiting its movement. It should be noted that when the T-head 11A is engaged in the T-slot 91C, the top surface of the T-head 11A needs to be higher than the top surface of the support plate 91 in the vertical direction to be limited by the baffles 8 and prevent the T-head 11A from dislodging.

[0049] Telescopic rods can also be used to drive the horizontal slider 9 to move. However, this is only suitable for areas with spacious spaces. Since the distance between cabinets is usually only about 0.8m, if the derailed cabinet 16 gets stuck in the middle of the two cabinets 16, the operating space left for the surrounding cabinets is only about 0.4m, which is very narrow and not conducive to telescopic rod operation. In order to reduce the space required for operation, in this invention, preferably, an end plate 3 is provided at the front end of the base plate 1. The bottom end of the end plate 3 is hinged to the front end of the base plate 1, that is, the end plate 3 can be rotated to be on the same plane as the base plate 1, or it can be rotated to be perpendicular to the base plate 1. A U-shaped groove 3A is provided on the end plate 3, which is recessed downward from the top. In order to limit the end plate 3 and increase its stability when the end plate 3 is rotated to a position perpendicular to the base plate 1, in this invention, rib plates 4 are respectively hinged to the left and right sides of the end plate 3. The other end of the rib plate 4 connected to the end plate 3 is provided with a vertical through-hole 4A. A through-hole 1A is provided on the base plate 1 at the position corresponding to the through-hole 4A. A U-shaped pin 6 is provided between the two rib plates 4. The U-shaped pin 6 is inserted into both the through-hole 4A and the through-hole 1A.

[0050] The force-applying end of the connecting rod 11 is L-shaped, including an upwardly bent force-applying plate 11B, and a threaded hole 11C is provided in the middle of the force-applying plate 11B.

[0051] A rocker mechanism is provided between the connecting rod 11 and the end plate 3, such as Figure 4 As shown, the rocker mechanism includes a large-end screw 12 and a rocker arm 13. One end of the screw of the large-end screw 12 is threadedly connected to the threaded hole 11C of the force-applying plate 11B, and the other end is connected to the large head. The large head of the large-end screw 12 is provided with a through hole, and the rocker arm 13 is detachably inserted into the through hole. The large head of the large-end screw 12 is locked in the U-shaped groove 3A of the end plate 3. The rocker arm 13 is perpendicular to the large-end screw 12. By turning the rocker arm 13, the large-end screw 12 is driven to rotate. The large-end screw 12 is threadedly connected to the threaded hole 11C of the force-applying plate 11B. The other end of the connecting rod 11 is connected to the support plate 91. Under the action of the support plate 91, the connecting rod 11 will not rotate with the rocker arm 13, but can only move linearly under the trend of the threaded engagement, thereby driving the support plate 91 to move. With this structure, the operator stands next to the large-end screw 12 to perform the work, and the rocker arm 13 does not increase the length of the large-end screw 12, which makes the operation space requirements low and is extremely suitable for working in narrow areas.

[0052] The locking structure can be similar to a brake that restricts hinge rotation, etc. In this invention, the locking structure includes a locking plate 5, with an insertion port 2B at the top of the side plates 2 at opposite positions. The locking plate 5 can be detachably inserted into the insertion ports 2B of the two side plates 2. The locking plate 5 has a simple structure, is easy to use, and connects the two side plates 2 together, increasing the stability and robustness of the frame.

[0053] Of course, the lifting device disclosed in this invention can be used not only for lifting cabinets in archives, but also for lifting other objects that need to be lifted.

[0054] The load-bearing frame of the archive cabinet is encased in sheet metal. The load-bearing frame includes cabinet support beams, with rollers installed at the bottom of the support beams. The sheet metal includes the cabinet bottom panel, top panel, side panels, and internal partitions.

[0055] This invention discloses a method for repairing derailed vertical cabinets in an archive room using a lifting device.

[0056] Step 1: Remove the bottom panel of the cabinet at the derailed location to expose the derailed roller 14. If there are documents on the bottom panel, clear them out systematically to expose the derailed roller 14. If only one roller is derailed, apply horizontal force directly above the derailed roller to fully lift it. Then, use a hammer to straighten the roller. At this point, stop applying horizontal force, tighten the locking bolts on the roller, and finally restore the bottom panel and documents to their original positions.

[0057] If the cabinet is stuck, it can only be lifted for maintenance, and the following steps are required:

[0058] Step Two, as follows Figure 6 As shown, after flattening the frame, one end of the frame with side panel 2 is inserted under the cabinet through the gap between the bottom of the cabinet and the track surface 15. Flattening the frame means rotating the side panel 2 and the bottom plate 1 of the frame until they are coplanar. This makes the frame flat, which allows it to be easily inserted under the cabinet through the gap between the bottom of the cabinet and the track surface 15, avoiding the problem of the gap being too small and inconvenient for using tools.

[0059] Step 3: Place the horizontal slider 9 on the base plate 1 of the frame. Then, rotate the side plate 2 of the frame to make it stand up, and make the limiting protrusion 2C on the inner side of the side plate 2 lock the horizontal slider 9, that is, the limiting surface 91A of the horizontal slider 9 is located between the limiting protrusion 2C and the base plate 1.

[0060] Step 4: Insert the T-head 11A of the connecting rod 11 through the gap from the outside of the cabinet, and lock the T-head 11A into the T-slot 91C of the horizontal slider 9 and pull it outward so that the T-head 11A is locked in the T-slot baffle.

[0061] Since the distance between adjacent cabinets is only about 0.8 meters under normal circumstances and only 0.4 meters when derailed, in such a narrow area, if the connecting rod 11 and the horizontal slider 9 are assembled together before being inserted under the cabinet, there is a risk that the total length of the connecting rod 11 and the horizontal slider 9 will be too long and not conducive to operation. Therefore, in this invention, the connecting rod 11 and the horizontal slider 9 are placed separately in their positions before being assembled.

[0062] Step 5: Install the card plate 5 into the slot 2B of the side plate 2; the card plate 5 connects the side plate 2, making the frame a stable support structure.

[0063] Step Six: Push the horizontal slider 9 to the very end of the frame. Then, match the lifting block 10 with the horizontal slider 9 and place it into the groove 2A of the side plate 2 of the frame. One end of the frame along its longitudinal direction is the front end, and the other end is the rear end. The front end is the side where the end plate 3 is installed, and it is also the end where force is applied subsequently. The opposite side of the front end is the rear end, and the very rear end refers to the limit position at which the horizontal slider 9 can move at the rear end of the frame. The purpose of pushing the horizontal slider 9 to the very end of the frame is to fully expose the groove 2A, allowing the lifting block 10 to be installed vertically in the groove 2A at its lowest position, thus avoiding interference between the lifting block 10 and the cabinet.

[0064] Step 7: Install the joystick mechanism.

[0065] The specific installation process of the rocker mechanism is as follows: First, rotate the end plate 3 to stand it up outside the cabinet; then, bend the rib plate 4 inward so that the insertion hole 4A at the end of the rib plate 4 is aligned with the insertion hole 1A on the base plate 1, and insert the U-shaped pin 6 at the same time so that the rib plate 4 and the end plate 3 form a stable support structure; then, pass the large-head screw 12 with a hole through the U-shaped groove 3A on the end plate 3 and screw it into the threaded hole 11C of the force plate 11B at the L-shaped end of the connecting rod 11; finally, insert the rocker into the hole of the large-head screw 12.

[0066] Step 8, as Figure 7 As shown, move the entire lifting device to directly below the cabinet support beam, turn the rocker arm 13, slowly raise the lifting block 10, lift the cabinet support beam, and drive the rollers to lift.

[0067] Step 9: After the roller is raised to the appropriate position, hammer the roller so that it is directly above the track.

[0068] In step nine, if the roller lifting height is still insufficient when the lifting block 10 reaches its limit position, place a square pad in the gap between the top of the side panel 2 and the cabinet support beam. Then, reverse the rocker arm to slowly lower the cabinet support beam until it is fully supported by the square pad on the side panel 2 of the lifter. Quickly lower the lifting block 10 to the bottom. Then, place a square pad on the lifting block 10 and repeat the lifting process of step eight until the roller is raised to the appropriate position. Hammer the roller to position it directly above the track. Tighten the locking nut on the hub with a screwdriver. Then, slowly reverse the rocker arm 13 to place the roller completely on the track. Quickly lower the lifting block 10. After the lifter is completely separated from the cabinet support beam, move the lifter aside, remove the lifter, and put the cabinet bottom panel back in. The repair is complete.

[0069] The lifting device disclosed in this invention can extend into spaces with small gaps for lifting operations, making it highly adaptable. The method for repairing derailed cabinets in archives disclosed in this invention utilizes the lifting device to restore the derailed cabinet online without needing to empty the documents on it, greatly improving the efficiency of derailment restoration and avoiding the need to move documents, thus saving manpower and resources. The online repair described in this invention refers to performing repairs directly without needing to empty the documents on the cabinet or remove a large amount of documents.

Claims

1. A lifting device, characterized in that: Includes the frame and sliding lifting device; The frame includes a base plate (1) and side plates (2) respectively provided on the left and right sides of the base plate (1). The bottom end of the side plate (2) is hinged to the base plate (1). The base plate (1) and the side plates (2) on both sides form a sliding channel with an open top and a longitudinal through-hole. A locking structure is provided for locking the relative position of the side plate (2) and the base plate (1). A groove (2A) is provided on the side plate (2) that is recessed downward from the top. The sliding lifting device includes a horizontal slider (9), a lifting block (10), and a connecting rod (11); The top surface of the horizontal slider (9) is the support surface, the bottom surface of the lifting block (10) is the mating surface, and the top surface of the lifting block (10) is the horizontally set lifting surface; the support surface and the mating surface are mutually adapted smooth inclined surfaces, and along the inclined direction of the inclined surface, the mating surface of the lifting block (10) is movably set on the support surface of the horizontal slider (9); one end of the connecting rod (11) is connected to the horizontal slider (9), and the other end is the force application end; The horizontal slider (9) is located in the sliding channel and is movably set on the bottom plate (1) of the frame along the longitudinal direction of the sliding channel. The left and right ends of the lifting block (10) are respectively inserted into the corresponding slide groove (2A) of the side plate (2), and the lifting block (10) is movably connected to the slide groove (2A) along the vertical direction. The locking structure includes a locking plate (5), and an insertion port (2B) is provided at the top of the side plate (2) at a relative position. The locking plate (5) can be detachably inserted into the insertion port (2B) of the two side plates (2).

2. The lifting device as described in claim 1, characterized in that: The horizontal slider (9) includes a support plate (91) and a vertical plate (92). The vertical plate (92) is vertically installed on the support plate (91), and the top surface of the vertical plate (92) is the support surface. A guide groove (10C) adapted to the vertical plate (92) is provided on the mating surface of the lifting block (10). The guide groove (10C) passes through the front and rear ends of the lifting block (10) longitudinally. The vertical plate (92) is inserted into the guide groove (10C) and is movably mated with the guide groove (10C).

3. The lifting device as described in claim 2, characterized in that: The upright plate (92) is located on the inner side of the left and right edges of the support plate (91), and the top surface of the support plate (91) located on the outer side of the upright plate (92) forms a limiting surface (91A). A limiting ridge strip (2C) extending longitudinally is provided on the inner side of the side plate (2). The support plate (91) is located between the limiting ridge strip (2C) and the bottom plate (1). The limiting ridge strip (2C) and the limiting surface (91A) cooperate to form a vertical limit on the support plate (91).

4. The lifting device as described in claim 2 or 3, characterized in that: A longitudinally extending bottom ridge (91B) is provided on the bottom surface of the tray (91).

5. The lifting device as described in claim 1, 2, or 3, characterized in that: A longitudinally widened flange (10A) is provided at the middle of the top of the lifting block (10); Limiting protrusions (10B) are provided at the front and rear ends of the left and right sides of the lifting block (10) along the horizontal direction. The limiting protrusions (10B) penetrate the bottom surface of the lifting block (10) from the top surface of the lifting block (10) in the vertical direction.

6. The lifting device as described in claim 1, 2, or 3, characterized in that: A T-slot (91C) is provided in the middle of the tray (91), and a T-head (11A) is provided at one end of the connecting rod (11). The T-head (11A) is connected in the T-slot (91C), and a baffle (8) is provided at the top of the T-slot (91C) to prevent the T-head (11A) from being pulled out.

7. The lifting device as described in claim 6, characterized in that: An end plate (3) is provided at the front end of the base plate (1), and the bottom end of the end plate (3) is hinged to the front end of the base plate (1); a U-shaped groove (3A) with a downward indentation along the top end is provided on the end plate (3); A rib plate (4) is hinged to the left and right sides of the end plate (3). The other end of the rib plate (4) connected to the end plate (3) is provided with a vertical through-hole (4A). A through-hole (1A) is provided on the bottom plate (1) at the position corresponding to the through-hole (4A). A U-shaped pin (6) is provided between the two rib plates (4). The U-shaped pin (6) is inserted into both the through-hole (4A) and the through-hole (1A). The force-applying end of the connecting rod (11) is L-shaped, including an upwardly bent force-applying plate (11B), and a threaded hole (11C) is provided in the middle of the force-applying plate (11B). A rocker mechanism is provided between the connecting rod (11) and the end plate (3). The rocker mechanism includes a large-end screw (12) and a rocker (13). One end of the screw of the large-end screw (12) is threadedly connected to the threaded hole (11C) of the force plate (11B), and the other end is connected to the large head. The large head of the large-end screw (12) is provided with a through hole, and the rocker (13) can be detachably inserted into the through hole. The large head of the large-end screw (12) is stuck in the U-shaped groove (3A) of the end plate (3).

8. A method for repairing derailed vertical cabinets in an archive room using the lifting device described in any one of claims 1-3, characterized in that: Step 1: Remove the bottom panel of the cabinet at the derailment location to expose the derailment rollers; Step 2: After flattening the frame, insert one end of the frame with the side panel (2) into the bottom of the cabinet through the gap between the bottom of the cabinet and the track surface (15); Step 3: Place the horizontal slider (9) on the base plate (1) of the frame. Then, rotate the side plate (2) of the frame to make it stand up and make the limiting protrusion (2C) on the inside of the side plate (2) lock the horizontal slider (9). Step 4: Insert the T-head (11A) of the connecting rod (11) through the gap from the outside of the cabinet, and lock the T-head (11A) in the T-slot (91C) of the horizontal slider (9) and pull it outward so that the T-head (11A) is locked in the baffle (8) of the T-slot (91C); Step 5: Install the card plate (5) into the slot (2B) of the side plate (2); Step 6: Push the horizontal slider (9) to the very end of the frame, and then match the lifting block (10) with the horizontal slider (9) and place it into the groove (2A) of the side plate (2) of the frame. Step 7: Install the joystick mechanism; Step 8: Move the entire lifting device to directly below the cabinet support beam, turn the rocker arm (13), slowly raise the lifting block (10), lift the cabinet support beam, and drive the rollers to lift. Step 9: After the roller is raised to the appropriate position, hammer the roller so that it is directly above the track.

9. The method for repairing derailed archive cabinets as described in claim 8, characterized in that: In step nine, when the lifting block (10) is raised to its limit position, if the roller lifting height is still insufficient, a square pad is placed in the gap between the top of the side plate (2) and the cabinet support beam. Then, the rocker arm is moved in the opposite direction to make the cabinet support beam slowly descend. After it is fully supported by the square pad on the side plate (2) of the lifting device, the lifting block (10) is quickly lowered to the bottom. Then, a square pad is placed on the lifting block (10), and the lifting process of step eight is repeated until the roller is raised to the appropriate position.

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