Cover lifting plate device based on Archimedes spiral principle

Abstract

The invention relates to the field of cable trench cover plate moving devices, in particular to a cover plate lifting device based on the Archimedes spiral principle. A cover plate lifting device based on the Archimedes spiral principle comprises a frame body, a moving mechanism, a lifting mechanism, a clamping, overturning and fine-adjusting mechanism and a power mechanism, the frame body is connected with the moving mechanism at the bottom through a middle support, and the whole device can move conveniently; the lifting mechanism is fixedly installed on the inner walls of the pair of frame main beams and located between the pair of main beams, and the clamping, overturning and fine-adjusting mechanism is installed on one side of the lifting mechanism, clamps the cable trench cover plate and is matched with the lifting mechanism to lift the cable trench cover plate. The power mechanism is installed on the outer wall of the frame body beam and connected with the lifting mechanism and the clamping, overturning and fine-adjusting mechanism to provide a whole power source for the device. The embedded blocks on the lower portion of the overturning fine adjustment plate are inserted into gaps in the two sides of the cover plate, the clamping air cylinder drives the embedded blocks to clamp the cover plate and lift the cover plate, and the moving device moves the cover plate to a proper position.

Description

Technical Field

[0001] The invention relates to the field of cable trench cover moving devices, and in particular to a cover lifting device based on the Archimedean spiral principle. Background Art

[0002] After the existing cable trench has completed the cable laying, it is usually necessary to customize multiple cover plates that are compatible with the cable trench and evenly lay them on the cable trench along the direction of the cable trench. This is mainly to make the ground flat, facilitate the movement of equipment and personnel, and protect the cables in the cable trench. After the cover plates are covered, if relevant personnel need to inspect or replace the cables in the cable trench, they generally need to open the cover plates before performing the corresponding operations.

[0003] At present, there are two main ways to lay, open and move the cable trench cover: manual and machine. In short, the manual operation method is that the operator manually pries open the cover, and then opens and moves the corresponding cover. This method is not only inefficient, but also increases the workload of relevant personnel and has certain hidden dangers. The machine operation method is to use corresponding machinery and equipment to lay, open and move the cable trench cover. For example, the suction cup type cable trench cover prying device on the market, its principle is to use a vacuum suction cup to adsorb the surface of the cover, and then use a mobile drive device to drive the cover to rise and fall, move, etc., which can greatly save manpower, but there are also certain shortcomings such as high requirements on the flatness of the cover surface and high requirements on the position of the slot holes on the cover surface. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of low efficiency, high work intensity and high safety hazards in manual operation of existing cable trench covers when moving, opening and laying, as well as the problems of high requirements on the surface flatness of the cover and small scope of application of suction cup machine operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions: A cover plate lifting device based on the Archimedean spiral principle comprises a frame body, a moving mechanism, a lifting mechanism, a clamping and flipping fine-tuning mechanism and a power mechanism; The frame body is connected to the moving mechanism at the bottom through an intermediate bracket to facilitate the movement of the device as a whole; the lifting mechanism is installed on the inner wall of the main beam of the frame body, in the middle of a pair of main beams, to provide lifting and lowering function; The clamping, flipping and fine-tuning mechanism is installed on one side of the lifting mechanism to clamp the cable trench cover and cooperate with the lifting mechanism to lift the cable trench cover; The power mechanism is installed on the inner wall of the main beam of the frame body, and is connected with the lifting mechanism and the clamping and flipping fine-tuning mechanism to provide the necessary power source for the entire device.

[0006] Furthermore, the frame body includes a frame main beam, a top beam, a main beam gate support, an intermediate bracket and a handle; Wherein, the frame main beam is provided with a pair, and the top beam is installed on the upper part of the pair of frame main beams; The main beam gate support is connected to the lower part of a pair of frame main beams; The intermediate bracket is installed through the main beam gate plate support and connected to the moving mechanism; A pair of handles are also provided, and the pair of handles are respectively welded to corresponding positions on a pair of frame main beams to facilitate users to move the entire device.

[0007] Further, the moving mechanism includes an outer bracket and a universal wheel assembly; Wherein, the outer bracket is connected to the middle bracket; The moving mechanism is provided with two groups, and the two groups of moving mechanisms are symmetrically installed at both ends of the middle bracket, and each group of moving mechanisms includes an outer bracket and two universal wheel assemblies; The universal wheel assembly is installed at the bottom of the outer bracket to facilitate the overall movement of the device.

[0008] Further, the lifting mechanism includes a mounting frame, a lifting cylinder, a lifting connecting plate, a lifting main frame, a lifting frame driven plate, a lifting frame bearing and a driven roller; Wherein, the mounting frame is mounted on the inner walls of a pair of the frame main beams; The lifting cylinder is connected to the mounting frame; The lifting connecting plate is mounted on one end of the lifting cylinder away from the mounting frame; The lifting main frame is installed on one side of the lifting connecting plate and is connected to the clamping and flipping fine-tuning mechanism; The driven plate of the lifting frame is connected to a surface of the lifting main frame away from the clamping and flipping fine-tuning mechanism; The lifting frame bearing is rollingly arranged on the frame main beam; The driven roller is connected between the lifting frame bearing and the lifting frame driven plate to guide and stabilize the movement of the lifting main frame.

[0009] Furthermore, the clamping and flipping fine-tuning mechanism includes a flipping fine-tuning seat, a flipping fine-tuning plate, a clamping cylinder, a clamping plate, an embedding block, a positioning block, a limiting block and a load-bearing chain; The flip fine-adjusting seat is installed on a side of the lifting main frame away from the lifting connecting plate; The flip fine-tuning plate is rotatably connected to the flip fine-tuning seat; The clamping cylinder is installed on the flip fine-tuning plate; The clamping plate is arranged on a side of the flip fine-tuning plate away from the flip fine-tuning seat and is connected to the driving end of the clamping cylinder; The embedding blocks are provided in two groups, and the two groups of embedding blocks are respectively installed on the bottom of the flip fine-tuning plate and the clamping plate; The limit block is installed on the flip fine-tuning plate; The positioning block is slidably disposed between the limit block and the flip fine-adjustment plate and is connected to the clamping plate; The load-bearing chain is connected between the lifting main frame and the flip fine-adjustment plate, and cooperates with the flip fine-adjustment seat to enable the lifting main frame and the flip fine-adjustment plate to be fine-adjusted and rotated.

[0010] Further, the power mechanism includes a hand pump, a lifting oil conduit and a clamping oil conduit; Wherein, the hand pump is installed on the outer wall of the main beam of the frame to provide the necessary power source for the entire device.

[0011] The lifting oil conduit is connected between the hand pump and the lifting cylinder; The clamping oil conduit is connected between the hand pump and the clamping cylinder.

[0012] Furthermore, when the two groups of embedded blocks are actually used, in addition to being inserted between the cable trench and the gap between the cover plates, they can also be inserted into the cable trench cover plates with slots themselves, which not only improves the scope of application, but also meets the needs of operations such as the movement of different types of cable trench covers. In addition, in conjunction with the movable clamping plate, the spacing between the two groups of embedded blocks can be adjusted to accommodate cable trench covers of different specifications and sizes, which can further improve the scope of application.

[0013] Furthermore, a pair of limit blocks are provided, which are symmetrically arranged with respect to the central axis of the flip fine-tuning plate. The limit blocks and the flip fine-tuning plate are provided with corresponding fixing holes, which can be connected by corresponding screws. The middle part of the limit block is provided in a convex manner, so that a sliding cavity can be formed between the limit block and the flip fine-tuning plate. A pair of positioning blocks are provided, and the positioning blocks are adapted to the sliding cavity. A pair of positioning blocks are slidably arranged between the flip fine-tuning plate and the pair of limit blocks through the sliding cavity. Fixed holes are provided at the ends of the positioning blocks and the clamping plate, which can be fixed by corresponding screws. Two load-bearing chains are provided, and the two load-bearing chains are symmetrically connected between the lifting main frame and the flip fine-tuning plate, and cooperate with the flip fine-tuning seat to enable the lifting main frame and the flip fine-tuning plate to be fine-tuned and rotated.

[0014] Furthermore, there are two lifting frame driven plates, which are symmetrically connected at predetermined positions on the lifting main frame, and two groups of connecting holes are correspondingly opened on the two lifting frame driven plates. There are two groups of lifting frame bearings, which are respectively and correspondingly rolled on a pair of frame main beams. There are two groups of driven rollers, which are respectively installed on the two groups of lifting frame bearings between the two groups of connecting holes of the two lifting frame driven plates, and cooperate with the lifting cylinder to roll up and down on the frame main beam; the two frame main beams are each provided with a hollow rolling groove on one side close to each other, and the hollow rolling groove is adapted to the lifting frame bearings.

[0015] The method and steps of using the above-mentioned lifting cover device based on the Archimedean spiral principle are as follows: S1. First move the device above the cable trench cover that needs to be removed.

[0016] S2. After the device moves to the top of the cover, check whether the two sets of embedded blocks are aligned with the gaps on both sides of the cover.

[0017] S3. After confirming that the two sets of embedded blocks are aligned with the gaps on both sides of the cover plate, shake the hand pump to make the two sets of hand pumps enter the gaps on both sides of the cover plate respectively.

[0018] S4. If the gap is not aligned, first align the embedded block at the bottom of the flip fine-tuning plate with the gap on one side, then adjust the control direction of the hand pump, shake the hand pump, so that the clamping cylinder drives the embedded block at the bottom of the clamping plate to move until the embedded block at the bottom of the clamping plate is aligned with the gap on the other side, and repeat S3.

[0019] S5. When it is confirmed that the embedding action is completed, release the hand pump to allow the clamping cylinder to drive the embedding block at the bottom of the clamping plate to move until the two sets of embedding blocks are clamped with the cover plate.

[0020] S6. Adjust the control direction of the hand pump again, shake the hand pump, drive the lifting cylinder to drive the lifting connecting plate to move, and drive the clamping and flipping fine-tuning mechanism as a whole and the cover plate to lift and move by lifting the main frame.

[0021] S7. After the lifting action is completed, move the cover to a safe position.

[0022] Working principle: A cover lifting device based on the Archimedean spiral principle comprises a frame body, a moving mechanism, a lifting mechanism, a clamping and flipping fine-adjusting mechanism and a power mechanism; A cover lifting device based on the Archimedean spiral principle comprises a frame body, a moving mechanism, a lifting mechanism, a clamping and flipping fine-adjusting mechanism and a power mechanism; The moving device as a whole makes the clamping and flipping fine-adjusting mechanism located above the cable trench cover, and the lower embedded block of the flipping fine-adjusting plate is placed at a gap on one side between the cover and the cable trench, and the clamping plate is driven to move by a clamping cylinder so that the lower embedded block of the clamping plate is at the gap on the other side between the cover and the cable trench, and then the clamping and flipping fine-adjusting mechanism is driven to move by a lifting mechanism so that two groups of embedded blocks are inserted into the corresponding gaps, and then the clamping plate is driven by a clamping cylinder so that the two groups of embedded blocks clamp the cover, and then the lifting mechanism is used to drive the clamping and flipping fine-adjusting mechanism as a whole and the cover to lift, and then the cover is moved to a suitable position.

[0023] Beneficial effects: By setting up a lifting mechanism, a clamping and flipping fine-tuning mechanism and a power mechanism, in coordination with the frame body and the moving mechanism, not only can the cable trench cover be clamped and moved accurately, thereby improving the efficiency of cover movement, laying and opening, but also the work intensity can be reduced, and potential safety hazards can be reduced. At the same time, by utilizing the specially arranged embedded blocks on the edge, operations such as clamping and moving can be performed on more types of covers, thereby increasing the scope of application and satisfying various cable trench and cover usage scenarios. In addition, by utilizing a customized hand pump, the two cylinders can be driven to move separately, which not only simplifies the device structure and reduces the cost of use, but also facilitates operation, thereby improving accuracy, safety and efficiency during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of this application.

[0025] Figure 2 This is a structural diagram of the present application from another perspective.

[0026] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0027] Figure 4 It is a schematic side view of the overall structure of this application.

[0028] Figure 5 This is a diagram showing the effect of using this application.

[0029] Figure 6 This is a schematic diagram of the connection between the hand pump and two cylinders in this application.

[0030] Figure 7 This is a schematic diagram of the connection between the hand pump and the two cylinders from another perspective of this application.

[0031] Figure 8 This is a schematic diagram of a partial structure of the clamping, flipping and fine-tuning mechanism of this application.

[0032] Fig. 9 This is a side view structural diagram of a partial structure of the clamping, flipping and fine-tuning mechanism of the present application.

[0033] Fig.10 This is a schematic diagram of the structure of the limit block of this application.

[0034] In the figure: 1. frame body; 101. frame main beam; 102. top beam; 103. main beam gate support; 104. middle bracket; 105. handle; 2. moving mechanism; 201. outer bracket; 202. universal wheel assembly; 3. lifting mechanism; 301. mounting frame; 302. lifting cylinder; 303. lifting connecting plate; 304. lifting main frame; 305. lifting frame driven plate; 306. lifting frame bearing; 307. driven roller; 4. clamping and flipping fine-tuning mechanism; 401. flipping fine-tuning seat; 402. flipping fine-tuning plate; 403. clamping cylinder; 404. clamping plate; 405. embedded block; 406. positioning block; 407. limit block; 408. load-bearing chain; 5. power mechanism; 501. hand pump; 502. lifting oil guide pipe; 503. clamping oil guide pipe. DETAILED DESCRIPTION

[0035] The scheme of the present invention is further described in detail below in conjunction with specific embodiments, and the embodiments are intended to explain the present invention rather than to limit it.

[0036] like Figure 1-Figure 5 As shown, there are a frame body 1, a moving mechanism 2, a lifting mechanism 3, a clamping and flipping fine-tuning mechanism 4 and a power mechanism 5.

[0037] Among them, the frame body 1 constitutes the overall frame of the device, the moving mechanism 2 is installed at the bottom of the frame body 1 to facilitate the movement of the entire device, the lifting mechanism 3 is installed on the inner wall of the frame beam 101 of the frame body to provide lifting and lowering effects, the clamping and flipping fine-adjusting mechanism 4 is installed on one side of the lifting mechanism 3 to clamp the cable trench cover and cooperate with the lifting mechanism 3 to lift the cable trench cover, the power mechanism 5 is installed on the inner wall of the frame beam 101 of the frame body, and is connected to the lifting mechanism 3 and the clamping and flipping fine-adjusting mechanism 4 to provide the power source required for the entire device.

[0038] In the prior art, there are generally two laying states of cable trench covers. The first state is to embed the cable trench cover into the cable trench so that the upper surface of the cable trench cover is flush with the ground near the cable trench, which is convenient for people to move around, equipment to move, etc. The specific method is to open a slightly larger cover groove on the cable trench and insert the cover into the cover groove. However, in actual measurement and production, due to errors in measurement and production, as well as considerations of subsequent cable trench cover prying and moving, there is usually a gap between the cable trench cover and the cable trench, which is convenient for subsequent movement of the cable trench cover. In the second case, the cable trench cover will be directly placed on the upper part of the cable trench wall, that is, protruding from the cable trench, etc. The present application can clamp and move the cover embedded in the cable trench, as well as the cover protruding from the cable trench, which will be explained in detail below.

[0039] Example 1 like Figure 1-Figure 5 As shown, the frame body 1 includes a frame main beam 101 , a top beam 102 , a main beam gate support 103 , an intermediate bracket 104 and a handle 105 .

[0040] Among them, a pair of frame main beams 101 are provided, the top beam 102 is installed on the upper part of the pair of frame main beams 101, the main beam gate support 103 is connected to the lower part of the pair of frame main beams 101, the middle bracket 104 is installed through the main beam gate support 103, connected to the moving mechanism 2, and a pair of handles 105 are also provided. The pair of handles 105 are respectively welded at corresponding positions on the pair of frame main beams 101, and the user moves the device as a whole.

[0041] Furthermore, a pair of frame main beams 101 are arranged in parallel, and together with the main beam gate support 103 and the top beam 102 form a main frame.

[0042] Example 2 like Figure 1-Figure 5 As shown, the moving mechanism 2 includes an outer bracket 201 and a universal wheel assembly 202 .

[0043] The outer bracket 201 is connected to the middle bracket 104, and the universal wheel assembly 202 is installed on the outer bracket 201 to facilitate the overall movement of the device.

[0044] Furthermore, two groups of mobile mechanisms 2 are provided, and the two groups of mobile mechanisms 2 are symmetrically installed at the two ends of the intermediate bracket 104. Each group of mobile mechanisms 2 includes an outer bracket 201 and two universal wheel assemblies 202. The outer bracket 201 is installed at the end of the intermediate bracket 104, and the two universal wheel assemblies 202 are correspondingly installed at the two ends of the outer bracket 201. Adaptive structural adjustments can be made according to the installation position, etc., to facilitate the overall movement of the device.

[0045] Example 3 like Figure 1-Figure 7As shown, the lifting mechanism 3 includes a mounting frame 301 , a lifting cylinder 302 , a lifting connecting plate 303 , a lifting main frame 304 , a lifting frame driven plate 305 , a lifting frame bearing 306 and a driven roller 307 .

[0046] Among them, the mounting frame 301 is installed on a pair of frame main beams 101, the lifting cylinder 302 is connected to the mounting frame 301, the lifting connecting plate 303 is installed on the end of the lifting cylinder 302 away from the mounting frame 301, the lifting main frame 304 is installed on one side of the lifting connecting plate 303, connected to the clamping and flipping fine-tuning mechanism 4, the lifting frame driven plate 305 is connected to the side of the lifting main frame 304 away from the clamping and flipping fine-tuning mechanism 4, the lifting frame bearing 306 is rotatably set on the frame main beam 101, and the driven roller 307 is connected between the lifting frame bearing 306 and the lifting frame driven plate 305 to guide and stabilize the movement of the lifting main frame 304.

[0047] Furthermore, a cylinder mounting seat is welded to the lower part of the mounting frame 301, the end of the lifting cylinder 302 is installed on the cylinder mounting seat by bolts, and the lifting connecting plate 303 is installed on the end of the driving end of the lifting cylinder 302. The lifting cylinder 302 drives the lifting connecting plate 303 to move up and down. The lifting main frame 304 is connected to a main frame bearing plate that is close to the lifting connecting plate 303 and abuts against the lifting connecting plate 303. Corresponding fixing holes are opened on the main frame bearing plate and the lifting connecting plate 303. The lifting connecting plate 303 and the lifting main frame 304 are fixed together by bolts matching the fixing holes on the main frame bearing plate.

[0048] Furthermore, two lifting frame driven plates 305 are provided, and the two lifting frame driven plates 305 are symmetrically connected at predetermined positions on the lifting main frame 304. Two groups of connecting holes are correspondingly opened on the two lifting frame driven plates 305. Two groups of lifting frame bearings 306 are provided, and the two groups of lifting frame bearings 306 are respectively and correspondingly set to roll on a pair of frame main beams 101. Two groups of driven rollers 307 are provided, and the two groups of driven rollers 307 are respectively installed on the two groups of lifting frame bearings 306 between the two groups of connecting holes of the two lifting frame driven plates 305, and cooperate with the lifting cylinder 302 to roll up and down on the frame main beam 101.

[0049] Furthermore, hollow rolling grooves are provided on the mutually adjacent sides of the two frame main beams 101, and the hollow rolling grooves are matched with the lifting frame bearings 306. When in use, when the lifting cylinder 302 drives the lifting connecting plate 303 to move, the lifting main frame 304 can drive the lifting frame driven plate 305 to move, so that the lifting frame bearings 306 can be driven by the driven roller 307 to roll in the hollow rolling grooves of the frame main beams 101, which can improve the stability during movement and play a certain guiding role.

[0050] Example 4 like Figure 1-Figure 10 As shown, the clamping and flipping fine-tuning mechanism 4 includes a flipping fine-tuning seat 401, a flipping fine-tuning plate 402, a clamping cylinder 403, a clamping plate 404, an embedding block 405, a positioning block 406, a limit block 407 and a load-bearing chain 408.

[0051] Among them, the flip fine-tuning seat 401 is installed on the side of the lifting main frame 304 away from the lifting connecting plate 303, the flip fine-tuning plate 402 is rotatably connected to the flip fine-tuning seat 401, the clamping cylinder 403 is installed on the flip fine-tuning plate 402, the clamping plate 404 is arranged on the side of the flip fine-tuning plate 402 away from the flip fine-tuning seat 401 and is connected to the driving end of the clamping cylinder 403, and two groups of embedded blocks 405 are provided. The two groups of embedded blocks 405 are respectively installed at the bottom of the flip fine-tuning plate 402 and the clamping plate 404, the limit block 407 is installed on the flip fine-tuning plate 402, the positioning block 406 is slidably arranged between the limit block 407 and the flip fine-tuning plate 402 and is connected to the clamping plate 404, and the load-bearing chain 408 is connected between the lifting main frame 304 and the flip fine-tuning plate 402.

[0052] Furthermore, a pair of flip fine-tuning seats 401 are provided, and the pair of flip fine-tuning seats 401 are symmetrically installed on the side of the lifting main frame 304 away from the lifting connecting plate 303. A pair of connecting seats corresponding to the flip fine-tuning seats 401 are connected to the flip fine-tuning plate 402, and pin holes are correspondingly opened on the connecting seats and the flip fine-tuning seats 401. The flip fine-tuning plate 402 is rotatably connected by pin shafts that are compatible with the pin holes on the connecting seats and the flip fine-tuning seats 401. Two groups of embedded blocks 405 are provided, and the two groups of embedded blocks 405 are respectively installed on the flip fine-tuning plate 402 and the bottom of the clamping plate 404. Each group of embedded blocks 405 is provided with a number of embedded blocks, and are arranged at a predetermined interval, and are inserted into the gap of the cable trench cover plate by using a special edge design, and can be kept tightly against the cable trench cover plate.

[0053] Furthermore, when the two sets of embedded blocks 405 are actually used, in addition to being inserted between the cable trench and the gap between the cover plates, they can also be inserted into the cable trench cover plates with slots themselves, which not only improves the scope of application, but also meets the needs of operations such as the movement of different types of cable trench covers. In combination with the movable clamping plate 404, the spacing between the two sets of embedded blocks 405 can be adjusted to accommodate cable trench covers of different specifications and sizes, which can further improve the scope of application.

[0054] Furthermore, a pair of limit blocks 407 are provided, and the pair of limit blocks 407 are symmetrically arranged about the central axis of the flip fine-tuning plate 402. The limit blocks 407 and the flip fine-tuning plate 402 are correspondingly provided with fixing holes, which can be connected by matching screws. The middle part of the limit block 407 is provided in a convex manner, so that a sliding cavity can be formed between the limit block 407 and the flip fine-tuning plate 402. A pair of positioning blocks 406 are provided, and the positioning blocks 406 are adapted to the sliding cavity. A pair of positioning blocks 406 are slidably arranged between the flip fine-tuning plate 402 and the pair of limit blocks 407 through the sliding cavity. Fixed holes are correspondingly provided on the ends of the positioning blocks 406 and the clamping plate 404, which can be fixed by matching screws. Two load-bearing chains 408 are provided, and the two load-bearing chains 408 are symmetrically connected between the lifting main frame 304 and the flip fine-tuning plate 402, and cooperate with the flip fine-tuning seat 401 so that the lifting main frame 304 and the flip fine-tuning plate 402 can be fine-tuned and rotated.

[0055] Furthermore, the moving device is moved as a whole so that the clamping and flipping fine-tuning mechanism 4 is located above the cable trench cover, and the lower embedded block 405 of the flipping fine-tuning plate 402 is placed at one side of the gap between the cover and the cable trench. The clamping cylinder 403 is used to drive the clamping plate 404 to move so that the lower embedded block 405 of the clamping plate 404 is aligned with the other side of the gap between the cover and the cable trench. The lifting mechanism 3 is then used to drive the clamping and flipping fine-tuning mechanism 4 to move so that the two groups of embedded blocks 405 are inserted into the corresponding gaps. The clamping cylinder 403 is then used to drive the clamping plate 404 so that the two groups of embedded blocks 405 clamp the cover. The lifting mechanism 3 is then used to drive the clamping and flipping fine-tuning mechanism 4 as a whole and the cover to lift, and then the cover is moved to a suitable position.

[0056] Furthermore, if the movement of the two sets of embedded blocks 405 inserted into the gap is abnormal, appropriate human intervention can be performed, such as by increasing gravity above the flip fine-tuning plate 402 to complete the movement. The rotation setting of the flip fine-tuning seat 401 and the flip fine-tuning plate 402 can make such interference fine-tuning possible.

[0057] Example 5 like Figure 4-Figure 7 As shown, the power mechanism 5 includes a hand pump 501 , a lifting oil conduit 502 and a clamping oil conduit 503 .

[0058] Among them, the hand pump 501 is installed on the outer wall of the frame main beam 101 to provide the necessary power source for the entire device, the lifting oil conduit 502 is connected between the hand pump 501 and the lifting cylinder 302, and the clamping oil conduit 503 is connected between the hand pump 501 and the clamping cylinder 403.

[0059] Furthermore, the hand pump 501 is a customized product, including a handle, an oil cylinder, a handle hook, etc., which provide power sources for the lifting cylinder 302 and the clamping cylinder 403 respectively. Two lifting oil conduits 502 and two clamping oil conduits 503 are each provided. According to the position relationship, two upper connecting seats and two lower connecting seats are respectively provided on the hand pump 501. The two upper connecting seats are located on the upper side of the two lower connecting seats, the two upper connecting seats are connected to the ends of the two lifting oil conduits 502, and the two lower connecting seats are connected to the ends of the two clamping oil conduits 503. The other ends of the two lifting oil conduits 502 and the two clamping oil conduits 503 are respectively connected to the oil inlet and outlet of the lifting cylinder 302 and the clamping cylinder 403. The specific working principle, etc. can refer to the relevant working principle of the hydraulic pump driving the cylinder in the prior art.

Claims

1. A cover lift device based on the Archimedean spiral principle, comprising a frame body, a moving mechanism, a lifting mechanism, a clamping and flipping fine-tuning mechanism and a power mechanism; in, The frame body is connected to the moving mechanism at the bottom through the middle bracket to facilitate the movement of the device as a whole; the lifting mechanism is installed on the inner wall of the frame beam of the frame body to provide lifting and lowering function; The clamping, flipping and fine-tuning mechanism is installed on one side of the lifting mechanism to clamp the cable trench cover and cooperate with the lifting mechanism to lift the cable trench cover; The power mechanism is installed on the outer wall of the upper beam of the frame body and is connected with the lifting mechanism and the clamping and flipping fine-tuning mechanism to provide the necessary power source for the entire device.

2. The lifting cover device based on the Archimedean spiral principle according to claim 1, characterized in that: The frame body includes a frame main beam, a top beam, a main beam gate support, an intermediate bracket and a handle; Wherein, the frame main beam is provided with a pair, and the top beam is installed on the upper part of the pair of frame main beams; The main beam gate support is connected to the lower part of a pair of frame main beams; The intermediate bracket is installed through the main beam gate plate support and connected to the moving mechanism; A pair of handles are provided, and the pair of handles are respectively welded to the outer walls of the upper parts of a pair of frame main beams, so as to facilitate the user to move the entire device.

3. The cover lifting device based on the Archimedean spiral principle according to claim 1, characterized in that: The moving mechanism comprises an outer bracket and a universal wheel assembly; Wherein, the outer bracket is connected to the middle bracket; The moving mechanism is provided with two groups, and the two groups of moving mechanisms are symmetrically installed at both ends of the middle bracket, and each group of moving mechanisms includes an outer bracket and two universal wheel assemblies; The universal wheel assembly is installed at the bottom of the outer bracket to facilitate the overall movement of the device.

4. The cover lifting device based on the Archimedean spiral principle according to claim 1, characterized in that: The lifting mechanism comprises a mounting frame, a lifting cylinder, a lifting connecting plate, a lifting main frame, a lifting frame driven plate, a lifting frame bearing and a driven roller; Wherein, the mounting frame is mounted on the inner wall of a pair of the frame main beams, in the middle of the main beams; The lifting cylinder is connected to the mounting frame; The lifting connecting plate is mounted on one end of the lifting cylinder away from the mounting frame; The lifting main frame is installed on one side of the lifting connecting plate and is connected to the clamping and flipping fine-tuning mechanism; The driven plate of the lifting frame is connected to a surface of the lifting main frame away from the clamping and flipping fine-tuning mechanism; The lifting frame bearing is rollingly arranged on the frame main beam; The driven roller is connected between the lifting frame bearing and the lifting frame driven plate to guide and stabilize the movement of the lifting main frame.

5. The cover lift device based on the Archimedean spiral principle according to claim 1, characterized in that: The clamping and flipping fine-tuning mechanism comprises a flipping fine-tuning seat, a flipping fine-tuning plate, a clamping cylinder, a clamping plate, an embedding block, a positioning block, a limiting block and a load-bearing chain; The flip fine-adjusting seat is installed on a side of the lifting main frame away from the lifting connecting plate; The flip fine-tuning plate is rotatably connected to the flip fine-tuning seat; The clamping cylinder is installed on the flip fine-tuning plate; The clamping plate is arranged on a side of the flip fine-tuning plate away from the flip fine-tuning seat and is connected to the driving end of the clamping cylinder; The embedding blocks are provided in two groups, and the two groups of embedding blocks are respectively installed on the bottom of the flip fine-tuning plate and the clamping plate; The limit block is installed on the flip fine-tuning plate; The positioning block is slidably disposed between the limit block and the flip fine-adjustment plate and is connected to the clamping plate; The load-bearing chain is connected between the lifting main frame and the flip fine-adjustment plate, and cooperates with the flip fine-adjustment seat to enable the lifting main frame and the flip fine-adjustment plate to be fine-adjusted and rotated.

6. The cover lifting device based on the Archimedean spiral principle according to claim 1, characterized in that: The power mechanism includes a hand pump, a lifting oil conduit and a clamping oil conduit; The hand pump is installed on the outer wall of the frame main beam, the lifting oil conduit is connected between the hand pump and the lifting cylinder, and the clamping oil conduit is connected between the hand pump and the clamping cylinder.

7. The cover lifting device based on the Archimedean spiral principle according to claim 5, characterized in that: The two groups of embedded blocks are arranged between the cable trench and the gap of the cover plate or in the cable trench cover plate which has a notch.

8. The cover lifting device based on the Archimedean spiral principle according to claim 5, characterized in that: The limit blocks are provided in a pair, which are symmetrically arranged with the central axis of the flip fine-tuning plate. The limit blocks and the flip fine-tuning plate are provided with corresponding fixing holes, which can be connected by matching screws. A protrusion is provided in the middle of the limit block, and the protrusion forms a sliding cavity between the limit block and the flip fine-tuning plate. A pair of positioning blocks are provided, and the positioning blocks are matched with the sliding cavity. The positioning blocks are slidably arranged between the flip fine-tuning plate and the limit blocks through the sliding cavity. The ends of the positioning blocks and the clamping plate are provided with corresponding fixing holes, and matching screws are arranged in the fixing holes to fix the positioning blocks and the clamping plate. Two load-bearing chains are provided, and the two load-bearing chains are symmetrically connected between the lifting main frame and the flip fine-tuning plate, and cooperate with the flip fine-tuning seat to enable the lifting main frame and the flip fine-tuning plate to be fine-tuned and rotated.

9. The cover lifting device based on the Archimedean spiral principle according to claim 4, characterized in that: The lifting frame driven plates are provided with two, and the two lifting frame driven plates are symmetrically connected on the side connected to the lifting main frame away from the clamping and flipping fine-tuning mechanism. Two groups of connecting holes are correspondingly opened on the two lifting frame driven plates. Two groups of lifting frame bearings are provided, and the two groups of lifting frame bearings are respectively and correspondingly set to roll on a pair of frame main beams. Two groups of driven rollers are provided, and the two groups of driven rollers are respectively installed on the two groups of lifting frame bearings between the two groups of connecting holes of the two lifting frame driven plates, and cooperate with the lifting cylinder to roll up and down on the frame main beam; the two frame main beams are provided with hollow rolling grooves on the sides close to each other, and the hollow rolling grooves are adapted to the lifting frame bearings.

10. A method for using the lifting cover device based on the Archimedean spiral principle according to claim 1, characterized in that: Here are the steps: S1. First move the device above the cable trench cover that needs to be removed; S2, after the device moves to the top of the cover plate, confirm whether the two sets of embedded blocks are aligned with the gaps on both sides of the cover plate; S3. After confirming that the two sets of embedded blocks are aligned with the gaps on both sides of the cover plate, shake the hand pump to make the two sets of hand pumps enter the gaps on both sides of the cover plate respectively; S4. If the gap is not aligned, first align the embedded block at the bottom of the flip fine-tuning plate with the gap on one side, then adjust the control direction of the hand pump, shake the hand pump, so that the clamping cylinder drives the embedded block at the bottom of the clamping plate to move until the embedded block at the bottom of the clamping plate is aligned with the gap on the other side, and repeat S3; S5. When it is confirmed that the embedding action is completed, release the hand pump to make the clamping cylinder drive the embedding block at the lower part of the clamping plate to move until the two sets of embedding blocks are clamped with the cover plate; S6. Adjust the control direction of the hand pump again, shake the hand pump, drive the lifting cylinder to drive the lifting connecting plate to move, and drive the clamping flip fine-tuning mechanism as a whole and the cover plate to lift and move by lifting the main frame; S7. After the lifting action is completed, move the cover to a safe position.

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