Auxiliary device for subway station roof construction

Abstract

The present invention specifically relates to an auxiliary device for the construction of subway station roofs, and relates to the technical field of subway construction. It comprises a lifting box, tensioning slide bars synchronously and relatively slidably installed on the four sides of the bottom of the lifting box, and external L-shaped hook plates installed at the ends of each tensioning slide bar, wherein the two external L-shaped hook plates on the front side and the two external L-shaped hook plates on the rear side are arranged relatively to each other, and are used to hook and release the front and rear sides of the roof; an upper elastic tightening component is used to tighten the upper side of the roof, mainly by arranging tensioning slide bars on the four sides of the bottom of the lifting box that can synchronously slide and open to the four sides and tighten to the middle, and the top plate is hooked and clamped in combination with the external L-shaped hook plates. This arrangement allows the overall length and width formed by the tensioning slide bars to be synchronously adjusted, so that they are relatively gathered when hooking and releasing small pieces of roof plates, and are spread outward when hooking and releasing large pieces of roof plates. This tensioning state can not only more flexibly and stably hook and clamp top plates of different sizes, but also has good applicability.

Description

Technical Field

[0001] The present invention specifically relates to an auxiliary device for subway station roof construction, and relates to the technical field of subway construction. Background Art

[0002] The internal structure construction of subway stations is generally carried out in a sequential construction method: that is, the underground continuous wall construction is carried out first. After the continuous wall construction is completed, the soil layer inside the wall is excavated. While excavating, multi-layer steel pipe supports are set up in the continuous wall after excavation to prevent the wall from tilting inward; after excavating to the bottom, the bottom plate construction is carried out, and then the interlayer pillars are constructed, and the upper floors are constructed; in this way, the main structure construction of the subway station is completed from bottom to top. Subsequently, the multi-layer steel pipe supports are removed layer by layer until the top plate assembly is completed, and then the top plate can be covered with soil, greened, and traffic can be restored; in the construction process of subway stations, the construction of the top plate is one of the key links. It is not only related to the structural safety of the entire station, but also directly affects the smooth progress of subsequent projects;

[0003] The existing subway station roof construction auxiliary devices on the market have some shortcomings in practical applications. First, the existing auxiliary devices are often unable to effectively and stably clamp and fix the roof. In the construction of subway station roofs, the roofs usually need to be accurately placed and fixed in the air by a crane to withstand various loads such as soil pressure and train operation. If the clamping force of the auxiliary device is not enough or the fixing method is unreasonable, the roof will be displaced or even fall off during construction or operation, causing serious safety accidents. Secondly, the existing auxiliary devices are not flexible to use, and the length and width of the entire auxiliary device are mostly fixed, which cannot be well adjusted to adapt to roofs of different sizes and changing construction environments. The overall structure has a poor use effect. Therefore, it is necessary to propose an auxiliary device for subway station roof construction to improve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide an auxiliary device for subway station roof construction to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above-mentioned object, the present invention is realized by the following technical scheme: an auxiliary device for subway station roof construction, comprising a lifting box, tensioning slide bars synchronously and relatively slidably installed on four sides of the bottom of the lifting box, and external L-shaped hook plates installed at the ends of each tensioning slide bar, wherein two front external L-shaped hook plates and two rear external L-shaped hook plates are arranged opposite to each other and are used to hook the front and rear sides of the roof;

[0006] An upper elastic tightening assembly is used to tighten the upper side of the top plate, and the upper elastic tightening assembly is movably arranged at the bottom of the lifting box;

[0007] A driving assembly is used to drive each outer L-shaped hook plate to slide inward to tighten and clamp the top plate, and at the same time, the elastic clamping assembly on the differential drive moves downward to clamp the top plate;

[0008] An active reinforcing side rod is movably interlaced between the two outer L-shaped hook plates on the front and rear sides of the lifting box, and an inner L-shaped hook plate is integrally arranged in the middle of the active reinforcing side rod for hooking the top plate, and a side elastic tightening component is arranged in the middle of the inner L-shaped hook plate for elastically tightening the front and rear side surfaces of the top plate;

[0009] The driving assembly includes a rotating circular plate that is horizontally mounted inside a lifting box, and the rotating circular plate is provided with four arc-shaped push holes in a circular array. A driving motor for driving the rotating circular plate to rotate is installed inside the lifting box. A transmission circular rod is vertically mounted at the opposite side end of each tensioning slide rod, and each transmission circular rod is inserted through each arc-shaped push hole. The upper elastic tightening assembly is connected to the bottom of the rotating circular plate.

[0010] A further improvement based on the above technical solution is that a multi-stage planetary reducer is installed inside the lifting box, and the multi-stage planetary reducer is arranged between the rotating circular plate and the upper elastic tightening assembly. The upper slow-rotating shaft end of the multi-stage planetary reducer is locked and connected to the lower side of the rotating circular plate, and the lower fast-rotating shaft end of the multi-stage planetary reducer is locked and connected with a screw, and the screw is connected to the upper elastic tightening assembly.

[0011] A further improvement based on the above technical solution is that a rectangular guide tube is provided at the bottom of the lifting box, and the upper elastic tightening assembly is slidably arranged on the inner side of the rectangular guide tube. The upper elastic tightening assembly includes a rectangular slide and a rectangular top plate slidably arranged inside the rectangular guide tube, and a plurality of first guide rods penetrating the rectangular slide are installed on the upper side of the rectangular top plate, and each first guide rod is provided with a return spring, and the return spring is arranged between the rectangular slide and the rectangular top plate, and each of the first guide rods is provided with a protruding block on the top of the rectangular slide for being clamped on the top of the rectangular slide.

[0012] A further improvement based on the above technical solution is that the screw rod passes through the middle of the rectangular slide plate and the rectangular top plate respectively, wherein the rectangular slide plate is threadedly connected to the screw rod, and the rectangular top plate is elastically attached to the upper side of the top plate.

[0013] A further improvement based on the above technical solution is that extension rods are fixedly provided on the four sides of the rectangular top plate, and each extension rod can be embedded upward from the bottom surface of the lifting box, the bottom of the extension rod is elastically attached to the upper side of the top plate, and each extension rod is staggered with each tensioning slide rod.

[0014] A further improvement based on the above technical solution is that the multi-stage planetary reducer includes a housing, an outer ring gear installed inside the housing, a planetary gear carrier meshed with the inner side of the outer ring gear, and a sun gear rotatably meshed with the middle part of the planetary gear carrier, the sun gear is the fast-rotating shaft end of the multi-stage planetary reducer, and the middle part of the sun gear is locked with the screw through an axle rod, a flange is fixed on the upper side of the planetary gear carrier, the flange is the slow-rotating shaft end of the multi-stage planetary reducer, and the flange is bolted to the lower side of the rotating circular plate.

[0015] A further improvement based on the above technical solution is that the inner L-shaped hook plate and the outer L-shaped hook plate are provided with guide plate slopes on opposite sides, a plurality of elastic tightening bands are obliquely installed at the angle of the outer L-shaped hook plate, and a storage groove is provided on one side of the outer L-shaped hook plate, and the storage groove is located below the elastic tightening band.

[0016] A further improvement based on the above technical solution is that a movable through hole is opened on the side of the outer L-shaped hook plate for the two ends of the movable reinforcing side rod to slide and insert, and the two ends of the movable reinforcing side rod are respectively locked with sliding clamps, and are slidably connected to the inner wall of the movable through hole through the sliding clamps, wherein an inner convex edge is provided on the opposite side of the movable through hole for clamping the sliding clamp and making it tightly attached to the movable reinforcing side rod.

[0017] A further improvement based on the above technical solution is that the side elastic tightening assembly includes a side plate embedded in the opposite side of the inner L-shaped hook plate and a second guide rod penetrating the front and rear sides of the inner L-shaped hook plate and fastened to the side plate, an electric telescopic rod is installed on the outer side of the inner L-shaped hook plate, the telescopic end of the electric telescopic rod penetrates the middle part of the inner L-shaped hook plate, and the telescopic end of the electric telescopic rod is connected to a spring group and elastically connected to the side plate through the spring group;

[0018] The spring group includes an inner spring and an outer spring, a first pad is fixedly provided on the rear side of the side plate, a second pad is fixedly provided on the telescopic end of the electric telescopic rod, the inner spring is installed on the opposite side of the first pad and the second pad, and the outer spring is sleeved on the outside of the first pad and the second pad.

[0019] A further improvement based on the above technical solution is that lifting rods are fixed on the four sides of the top of the lifting box, and four relatively arranged sliding holes are opened at the bottom of the lifting box. Each of the transmission round rods can be moved on the sliding holes respectively, and sliding grooves are correspondingly arranged on the lower sides of the sliding holes. Sliding grooves are respectively opened on both sides of the tensioning slide rod, and the sliding grooves are adapted to slide with the sliding grooves.

[0020] By adopting the above technical solution, the present invention has the following advantages:

[0021] The structure of the present invention is compact and ingenious. It is mainly achieved by arranging tensioning slide bars on the four sides of the bottom of the lifting box body, which can be slid to the four sides and tightened to the middle synchronously, and the top plate is hooked and clamped with the outer L-shaped hook plate. This arrangement allows the overall length and width formed by the tensioning slide bars to be adjusted synchronously, so that when a small top plate is hooked, it is relatively gathered, and when a large top plate is hooked, it is expanded outward. This tensioning state can not only be more flexible and stable to hook and clamp top plates of different sizes, but also has good applicability.

[0022] Secondly, an upper elastic tightening assembly is arranged at the bottom of the lifting box body, which can move downward and press against the upper side of the top plate, so that the top plate clamped by the four outer L-shaped hook plates can be more firmly secured to prevent the top plate from moving or falling off, and a driving assembly is arranged inside the lifting box body, which can drive the tensioning slide bar to slide continuously inward, while driving the upper elastic tightening assembly to move continuously downward, that is, when the four outer L-shaped hook plates are relatively displaced to hook the top plate, they can cooperate with the upper elastic tightening assembly to move downward and press against the upper side of the top plate synchronously, so that the clamping effect of the top plate is better, which is more firm and stable for the smaller top plates;

[0023] The movable reinforcing side rods are also provided to respectively insert the outer L-shaped hook plates on the front and rear sides and cooperate with the tensioning slide rod, so that the two outer L-shaped hook plates on the front side and the tensioning slide rod and the movable reinforcing side rods form a triangular shape, which can improve the structural stability of the tensioning slide rod when sliding and retracting and the structural strength of the outer L-shaped hook plates when hooking and clamping the top plate. The movable reinforcing side rods can also be used to limit the front and rear sides of the top plate, so as to better improve the use effect of the entire equipment;

[0024] An inner L-shaped hook plate is also provided in the middle part of the movable reinforced side rod to increase the contact points with the top plate, so as to further hook and clamp the front and rear sides of the top plate to improve the stability during use. The L-shaped hook plate is also provided with a side elastic tightening assembly that can perform double elastic tightening on the front and rear sides of the top plate. Combined with the tightening effect of the elastic tightening assembly on the upper side of the top plate, the clamping effect is greatly improved to prevent the top plate from slipping and falling off.

[0025] Among them, a guide plate slope is provided on the opposite side of the outer L-shaped hook plate, so when the four outer L-shaped hook plates are tightened and displaced laterally, the front and rear side edges of the top plate can quickly slide into the outer L-shaped hook plate along the guide plate slope, which is more convenient to use, and when the four outer L-shaped hook plates continue to tighten and clamp the top plate, the two sides of the top plate can push multiple elastic tightening bands inward to deform, so that the top plate can utilize the elastic tightening bands to connect with the L-shaped hook plates to improve the anti-slip effect therebetween, and the elastic effect of the elastic tightening bands can also be used to elastically tighten the two sides of the top plate, greatly improving its clamping stability. The entire structure realizes multi-functional operation in a limited space, which not only has a good use effect, but also helps to improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 For the present invention Figure 1 Another perspective structural diagram of;

[0029] Figure 3 It is a schematic diagram of the structure inside the lifting box of the present invention;

[0030] Figure 4 It is a schematic diagram of the connection structure between the driving assembly and the upper elastic tightening assembly of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the multi-stage planetary reducer and the upper elastic tightening assembly of the present invention;

[0032] Figure 6 It is a schematic diagram of the inner bottom structure of the lifting box of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the multi-stage planetary reducer of the present invention;

[0034] Figure 8 It is a structural schematic diagram of the multi-stage planetary reducer of the present invention from another perspective;

[0035] Fig. 9 It is a schematic diagram of the structure of the movable reinforcing side rod and the outer L-shaped hook plate of the present invention;

[0036] Fig.10 It is a structural schematic diagram of the movable reinforcing side rod and the inner L-shaped hook plate of the present invention;

[0037] Fig.11 It is a structural schematic diagram of the side elastic tightening assembly of the present invention;

[0038] Fig.12 It is a schematic diagram of the structure of the present invention in use state;

[0039] In the figure: lifting box 1, tensioning slide bar 2, transmission round bar 21, slide groove 22, outer L-shaped hook plate 3, guide plate inclined surface 31, elastic tightening belt 32, movable opening 33, storage groove 34, inner convex edge 35, movable reinforcing side rod 4, sliding clamp 41, drive assembly 5, drive motor 51, rotating circular plate 52, arc-shaped pushing hole 53, inner L-shaped hook plate 6, side plate 61, second guide rod 62, electric telescopic rod 63, spring group 64, inner Spring 641, outer spring 642, first cushion block 643, second cushion block 644, upper elastic tightening assembly 7, rectangular slide plate 73, rectangular top plate 74, extension rod 741, first guide rod 75, return spring 76, protruding block 761, rectangular guide tube 8, multi-stage planetary reducer 9, screw 90, planetary gear carrier 91, flange 92, outer ring gear 93, sun gear 94, sliding through hole 10, sliding slot 11, and suspension rod 12. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0041] like Figure 1-12 As shown, the present invention provides a technical solution for an auxiliary device for subway station roof construction, comprising a lifting box 1, tensioning slide bars 2 synchronously and relatively slidably installed on the four sides of the bottom of the lifting box 1, and external L-shaped hook plates 3 installed at the ends of each tensioning slide bar 2, wherein the two front external L-shaped hook plates 3 are arranged opposite to the two rear external L-shaped hook plates 3, so that the tensioning slide bars 2 on the four sides can always keep the two front external L-shaped hook plates 3 and the two rear external L-shaped hook plates 3 in a relative state regardless of whether they are tightened or unfolded, so as to facilitate hooking and clamping the front and rear sides of the roof; wherein an upper elastic tightening component 7 is provided for tightening the upper side of the roof, and the upper elastic tightening component 7 is movable It is movable at the bottom of the lifting box 1, and is also provided with a driving assembly 5 for driving each outer L-shaped hook plate 3 to tighten and slide inward to clamp the top plate. At the same time, a multi-stage planetary reducer 9 is used to differentially drive the upper elastic tightening assembly 7 to move downward and synchronously tighten the top plate. In this process, when the four outer L-shaped hook plates 3 are relatively displaced to hook the top plate, the upper elastic tightening assembly 7 is synchronously displaced downward to accurately tighten the upper side of the top plate to form a stable clamping system. This collaborative working mode not only ensures that the top plate is firmly clamped, but also can adapt to the clamping requirements of top plates of different sizes, especially for the processing of top plates with smaller widths, and can provide a tighter and more stable clamping effect.

[0042] The driving assembly 5 includes a rotating circular plate 52 which is horizontally mounted inside the lifting box 1, and the rotating circular plate 52 is provided with four arc-shaped push holes 53 in a circular array. A driving motor 51 for driving the rotating circular plate 52 to rotate is installed inside the lifting box 1. A transmission round rod 21 is vertically mounted on the opposite side end of each tensioning slide bar 2, and each transmission round rod 21 is interspersed by each arc-shaped push hole 53. Therefore, after the rotating circular plate 52 is driven to rotate by the driving motor 51, the four arc-shaped push holes 53 push the four transmission round rods 21, and the four tensioning slide bars 2 can slide outward synchronously, or slide inward relatively synchronously, thereby realizing four outer L The L-shaped hook plate 3 is relatively expanded and tightened, and this setting allows the overall length and width formed by the tensioning slide bar 2 to be adjusted synchronously. The tensioning slide bar 2 is one of the core components. When the operator hooks and places top plates of different sizes, he can quickly and accurately adjust the state of the tensioning slide bar 2 to achieve the best hooking effect. When a small top plate is hooked and placed, the tensioning slide bar 2 can make the overall structure more gathered; when a large top plate is hooked and placed, it can be expanded outward to increase stability and applicability. The outer L-shaped hook plate 3 is another key component for hooking and clamping the top plate. Its L-shaped design can provide effective support and fixing to ensure the stability of the top plate during the hooking process.

[0043] The upper elastic tightening component 7 is connected to the bottom of the rotating circular plate 52, so that the tightening effect of the upper elastic tightening component 7 can cooperate with the hooking and clamping effect of the four outer L-shaped hook plates 3, so as to fix the top plate more stably, and the upper elastic tightening component 7 is arranged at the bottom of the lifting box 1. Its main function is to move downward and tighten the upper side of the top plate while the outer L-shaped hook plates 3 hook the top plate. The key to this linkage design lies in "elasticity", which means that the component can adapt to the thickness of the top plate and also ensure that the top plate is clamped evenly and tightly. In order to better realize the linkage use of the upper elastic tightening component 7 and the four outer L-shaped hook plates 3, specifically, a multi-stage planetary reducer 9 is installed inside the lifting box 1. The multi-stage planetary reducer 9 is a two-stage planetary reducer. The multi-stage planetary reducer 9 is arranged between the rotating circular plate 52 and the upper elastic tightening component 7. The slow rotating shaft end on the upper side of the multi-stage planetary reducer 9 is locked and connected with the lower side of the rotating circular plate 52. The fast-rotating shaft end on the lower side of the planetary reducer 9 is locked and connected with a screw 90. The speed of the fast-rotating shaft end is increased, so the number of circles is also greater. The multi-stage planetary reducer 9 includes a housing, two outer gear rings 93 installed inside the housing, a planetary gear carrier 91 meshed on the inner side of the outer gear ring 93, and a sun gear 94 rotatably meshed in the middle of the planetary gear carrier 91. The sun gear 94 is the fast-rotating shaft end of the multi-stage planetary reducer 9, and the middle part of the sun gear 94 is locked and connected to the screw 90 through an axle. A flange 92 is fixed on the upper side of the planetary gear carrier 91. The flange 92 is the slow-rotating shaft end of the multi-stage planetary reducer 9. The flange 92 is bolted to the lower side of the rotating circular plate 52. Usually, the speed of the fast-rotating shaft end is six times that of the slow-rotating shaft end. Therefore, after the rotating circular plate 52 drives the planetary gear carrier 91 to rotate half a circle, the screw 90 on the sun gear 94 rotates three circles accordingly. Of course, a multi-stage planetary reducer 9 with a corresponding differential ratio can also be installed according to usage requirements.

[0044] Among them, the screw rod 90 is connected with the upper elastic tightening assembly 7, so that the screw rod 90 rotates and transmits the upper elastic tightening assembly 7, and a rectangular guide tube 8 is provided at the bottom of the lifting box 1, and the upper elastic tightening assembly 7 is slidably arranged on the inner side of the rectangular guide tube 8. The upper elastic tightening assembly 7 includes a rectangular slide 73 and a rectangular top plate 74 slidably arranged inside the rectangular guide tube 8. A plurality of first guide rods 75 penetrating the rectangular slide 73 are installed on the upper side of the rectangular top plate 74, and each first guide rod 75 is sleeved with a return spring 76, and the return spring 76 is arranged between the rectangular slide 73 and the rectangular top plate 74. Under the action of the return spring 76, the rectangular top plate 74 is elastically attached to the upper side of the top plate for tightening and limiting, and a protruding block 761 is provided on the top of each first guide rod 75 for being clamped on the top of the rectangular slide 73 to prevent the first guide rod 75 from falling off downward and affecting the use of the rectangular slide 73. When the screw rod 90 is in the upward direction, it passes through the middle of the rectangular slide plate 73 and the rectangular top plate 74 respectively, wherein the rectangular slide plate 73 is threadedly connected to the screw rod 90, and the thread pitch of the screw rod 90 can be set larger. Therefore, when the screw rod 90 is threadedly driving the rectangular slide plate 73, even if the number of rotations is small, the rectangular slide plate 73 can be threadedly pushed up and down by a large distance, and after the screw rod 90 is threadedly driven to move the rectangular slide plate 73 downward, the return spring 76 further applies a large spring force to the rectangular top plate 74, so that the rectangular top plate 74 can be pushed tighter. That is to say, when the four outer L-shaped hook plates 3 are relatively displaced to hook the top plate, they can cooperate with the elastic tightening assembly 7 to move downward and synchronously tighten the upper side of the top plate, so that the clamping effect of the top plate is better, which is particularly obvious for the smaller top plate, and can significantly enhance the clamping effect, which is conducive to preventing the top plate from being displaced or falling off during the lifting process;

[0045] Furthermore, extension rods 741 are fixed on the four sides of the rectangular top plate 74, and each extension rod 741 can be embedded upward from the bottom surface of the lifting box 1, that is, a certain embedding groove is opened at the bottom of the bottom surface of the lifting box 1, and the rectangular top plate 74 and the bottom surface of the extension rod 741 are elastically attached to the upper side of the top plate at the same time, which can increase the overall contact range and area with the upper side of the top plate, so that the tight contact effect between them is better, and protective stickers can also be attached to the lower side of the rectangular top plate 74 and the extension rod 741 to increase the friction between them, and each extension rod 741 is staggered with each tensioning slide rod 2 to reasonably utilize the space and avoid mutual interference in use.

[0046] The inner L-shaped hook plate 6 and the outer L-shaped hook plate 3 are both provided with a guide plate inclined surface 31 on the opposite side, so that when the four outer L-shaped hook plates are laterally tightened and displaced, the front and rear side edges of the top plate can quickly slide into the outer L-shaped hook plate 3 along the guide plate inclined surface, which has the function of clamping the guide plate and improves the convenience of use. In addition, three elastic tightening bands 32 are obliquely installed at the angle of the outer L-shaped hook plate 3. The elastic tightening bands 32 are made of rubber material. When the four outer L-shaped hook plates are laterally tightened and displaced, the two sides of the top plate can push the three elastic tightening bands 32 inward and deform, thereby enhancing The connection with the L-shaped hook plate is improved, and the anti-slip effect is improved. The elastic force of the elastic tightening belt 32 is used to tighten the top plate. When the outer L-shaped hook plate 3 is separated from the top plate outward, the elastic tightening belt 32 also has the force to pop out the top plate, making it faster and more convenient to remove the plate. A storage groove 34 is provided on one side of the outer L-shaped hook plate 3, and the storage groove 34 is located below the elastic tightening belt 32, mainly to be able to accommodate the deformed elastic tightening belt 32 and to be flush with the outer L-shaped hook plate 3, so that the top plate can be stably placed on the outer L-shaped hook plate 3.

[0047] The two ends of the movable reinforcing side rods 4 are respectively locked with sliding clamps 41, and are slidably connected to the inner wall of the movable through-hole 33 through the sliding clamps 41, and an inner convex edge 35 is provided on the opposite side of the movable through-hole 33 for clamping the sliding clamps 41 and pressing against the movable reinforcing side rods 4 to prevent the connecting ends of the movable reinforcing side rods 4 from sliding out of the movable through-hole 33 when the tensioning slide bar 2 is transitionally opened, thereby improving the safety and stability of use.

[0048] The inner L-shaped hook plate 6 is provided with a side elastic tightening assembly in the middle part for elastically tightening the front and rear side surfaces of the top plate. The combined use of the inner L-shaped hook plate and the side elastic tightening assembly can increase the hooking contact points and limit the front and rear sides of the top plate, thereby improving the stability of use. Specifically, the side elastic tightening assembly includes a side plate 61 embedded in the opposite side of the inner L-shaped hook plate 6 and a second guide rod 62 that passes through the front and rear sides of the inner L-shaped hook plate 6 and is fastened to the side plate 61. An electric telescopic rod 63 is installed on the outer side of the inner L-shaped hook plate 6. The telescopic end of the electric telescopic rod 63 passes through the middle part of the inner L-shaped hook plate 6, and the telescopic end of the electric telescopic rod 63 is connected to a spring group 64, and is elastically connected to the side plate 61 through the spring group 64. The spring group 64 is pushed forward by the electric telescopic rod 63, so that the spring group 64 can elastically push the side plate 61 to elastically tighten and limit the front and rear sides of the top plate, thereby achieving the effect of further fixing and supporting. The tightening force can also be adjusted according to different loads and requirements, and it has strong adaptability.

[0049] Among them, the spring group 64 includes an inner spring 641 and an outer spring 642. Through the coordinated use of the inner and outer springs, a uniform and effective double elastic force can be provided, thereby ensuring the stability and reliability of the top tight support of the machine. A first cushion block 643 is fixedly provided on the rear side of the side plate 61, and a second cushion block 644 is fixedly provided on the telescopic end of the electric telescopic rod 63. The inner spring 641 is installed on the opposite side of the first cushion block 643 and the second cushion block 644, and the outer spring 642 is sleeved on the outside of the first cushion block 643 and the second cushion block 644 to ensure the stability and accuracy of the spring group during operation. The first cushion block 643 and the second cushion block 644 can effectively support and guide the inner spring 641 and the outer spring 642 to keep them in the correct position.

[0050] To this end, the double elastic force of the above-mentioned side elastic tightening component is tightened on both sides of the top plate, combined with the large-range elastic force of the upper elastic tightening component 7 on the upper side of the top plate and the contact tightening effect of the elastic tightening belt 32 on the top plate, thereby greatly improving the clamping effect and effectively preventing the top plate from slipping and falling off.

[0051] At the same time, lifting rods 12 are fixedly provided on the four sides of the top of the lifting box 1 for use in conjunction with an external crane for lifting. Four relatively arranged sliding through holes 10 are provided at the bottom of the lifting box 1 to ensure that the transmission round rod 21 can be movable and displaced on the sliding through holes 10. A sliding slot 11 is correspondingly provided on the lower side of the sliding through hole 10, and sliding slots 22 are respectively provided on both sides of the tensioning slide bar 2. The sliding slots 22 are adapted to slide with the sliding slots 11, so that the tensioning slide bar 2 is not easy to detach downward when sliding.

[0052] More specific working principle:

[0053] The top plate of the present invention only needs to be located between the four outer L-shaped hook plates 3, and the rotating circular plate 52 is driven by the driving motor 51 to rotate counterclockwise, so that the four arc-shaped pushing holes 53 respectively push the transmission circular rods 21 of the four tensioning slide bars 2 to move inward, thereby pulling the four tensioning slide bars 2 to relatively move and achieve tightening, and the two tensioning slide bars 2 and the two tensioning slide bars 2 on the rear side are respectively relatively slid and moved on the two movable reinforcing side bars 4, at this time, the top plate is allowed to slide along the guide plate inclined surface 31 of the outer L-shaped hook plate 3 and the inner L-shaped hook plate 6 into the angle between the outer L-shaped hook plate 3 and the inner L-shaped hook plate 6, and the three elastic tightening belts 32 are gradually pushed inward and contact each other, and the elastic tightening belts 32 use the elastic force to react and tighten the top plate;

[0054] When the rotating circular plate 52 rotates and drives the outer L-shaped hook plate 3 to tighten and clamp the top plate, the bottom of the rotating circular plate 52 is connected to the planetary gear frame 91 through the flange 92. When the outer gear ring 93 is fixed, the sun gear 94 in the middle of the meshing transmission rotates when the planetary gear frame 91 rotates. Therefore, the rotation speed of the sun gear 94 is faster than that of the planetary gear frame 91, and the number of revolutions is greater. When the sun gear 94 rotates, it drives the screw rod 90 at the bottom to rotate through the rotating shaft. The screw rod 90 threadedly drives the rectangular slide plate 73 to move downward in the rectangular guide tube 8, and uses the return spring 76 to continuously push the rectangular top plate 74 downward, so that the rectangular top plate 74 and the extension rod 741 can be elastically pressed against the upper surface of the top plate in a large range to improve the upper and lower clamping effect.

[0055] Then, the side elastic tightening component of the inner L-shaped hook plate 6 is used to improve the clamping effect of the front and rear of the top plate. It mainly extends the electric telescopic rod 63 to push the spring group 64, so that the double elastic force of the inner spring 641 and the outer spring 642 of the spring group 64 acts on the side plate 61. The front side of the side plate 61 is compounded with a layer of anti-slip rubber, which makes it fit tightly with the front and rear sides of the top plate, further improving the hooking and clamping effect of the entire auxiliary device on the top plate. The overall use effect is also relatively flexible and stable. Finally, the crane sling is used to achieve the purpose of smooth and safe lifting through the cooperation of the hook and the suspension rod 12.

[0056] It should also be noted that the multi-stage planetary reducer 9 is a prior art, which is a transmission accessory well known to those skilled in the art. The main operating principles are summarized in this embodiment, and the more specific structural principles are not repeated here.

[0057] The above embodiments show and describe the basic principles and main features of the invention and the advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the invention. Without departing from the spirit and scope of the invention, the invention may have various changes and improvements, which shall fall within the scope of the invention to be protected. The scope of protection of the invention shall be defined by the attached claims and their equivalents.

Claims

1. An auxiliary device for subway station roof construction, characterized in that: include: A lifting box (1), tensioning slide bars (2) synchronously and relatively slidably mounted on four sides of the bottom of the lifting box (1), and external L-shaped hook plates (3) mounted at the ends of the tensioning slide bars (2), wherein the two front external L-shaped hook plates (3) and the two rear external L-shaped hook plates (3) are arranged opposite to each other and are used to hook the front and rear sides of the top plate; An upper elastic tightening assembly (7) is used to tighten the upper side of the top plate, and the upper elastic tightening assembly (7) is movably arranged at the bottom of the lifting box (1); A driving assembly (5) is used to drive each outer L-shaped hook plate (3) to slide inward to tighten and clamp the top plate, while the elastic clamping assembly (7) on the differential transmission moves downward to clamp the top plate; A movable reinforcing side rod (4) is movably interlaced between the two outer L-shaped hook plates (3) on the front and rear sides of the lifting box (1), and an inner L-shaped hook plate (6) is integrally provided in the middle of the movable reinforcing side rod (4) for hooking the top plate, and a side elastic tightening component is provided in the middle of the inner L-shaped hook plate (6) for elastically tightening the front and rear side surfaces of the top plate; The driving assembly (5) comprises a rotating circular plate (52) which is horizontally mounted inside the lifting box (1), and the rotating circular plate (52) is provided with four arc-shaped pushing holes (53) in a circular array. A driving motor (51) for driving the rotating circular plate (52) to rotate is installed inside the lifting box (1). A transmission round rod (21) is vertically mounted on the opposite side end of each tensioning slide rod (2), and each transmission round rod (21) is inserted through each arc-shaped pushing hole (53). The upper elastic tightening assembly (7) is connected to the bottom of the rotating circular plate (52); A plurality of elastic tightening bands (32) are obliquely installed at the angle of the outer L-shaped hook plate (3), and a storage groove (34) is provided on one side of the outer L-shaped hook plate (3), and the storage groove (34) is located below the elastic tightening band (32); The side of the outer L-shaped hook plate (3) is provided with a movable opening (33) for sliding and inserting the two ends of the movable reinforcing side rod (4), and the two ends of the movable reinforcing side rod (4) are respectively locked with a sliding clamp (41) and are slidably connected to the inner wall of the movable opening (33) through the sliding clamp (41), wherein an inner convex edge (35) is provided on the opposite side of the movable opening (33) for clamping the sliding clamp (41) and closely contacting the movable reinforcing side rod (4).

2. The auxiliary device for subway station roof construction according to claim 1, characterized in that: A multi-stage planetary reducer (9) is installed inside the lifting box (1), and the multi-stage planetary reducer (9) is arranged between the rotating circular plate (52) and the upper elastic tightening component (7). The upper slow-rotating shaft end of the multi-stage planetary reducer (9) is locked and connected to the lower side of the rotating circular plate (52), and the lower fast-rotating shaft end of the multi-stage planetary reducer (9) is locked and connected with a screw (90), and the screw (90) is connected to the upper elastic tightening component (7).

3. The auxiliary device for subway station roof construction according to claim 2, characterized in that: A rectangular guide tube (8) is provided at the bottom of the lifting box (1), and the upper elastic clamping assembly (7) is slidably arranged on the inner side of the rectangular guide tube (8). The upper elastic clamping assembly (7) includes a rectangular slide (73) and a rectangular top plate (74) slidably arranged inside the rectangular guide tube (8). A plurality of first guide rods (75) penetrating the rectangular slide (73) are installed on the upper side of the rectangular top plate (74), and each first guide rod (75) is sleeved with a return spring (76), and the return spring (76) is arranged between the rectangular slide (73) and the rectangular top plate (74). A protruding block (761) is provided on the top of each first guide rod (75) for clamping on the top of the rectangular slide (73).

4. The auxiliary device for subway station roof construction according to claim 3, characterized in that: The screw rod (90) passes through the middle of the rectangular slide plate (73) and the rectangular top plate (74), respectively, wherein the rectangular slide plate (73) is threadedly connected to the screw rod (90), and the rectangular top plate (74) is elastically attached to the upper side of the top plate.

5. The auxiliary device for subway station roof construction according to claim 4, characterized in that: Extension rods (741) are fixedly arranged on four sides of the rectangular top plate (74), and each extension rod (741) can be embedded upward from the bottom surface of the lifting box (1), the bottom of the extension rod (741) is elastically attached to the upper side of the top plate, and each extension rod (741) is staggered and distributed with each tensioning slide rod (2).

6. The auxiliary device for subway station roof construction according to claim 5, characterized in that: The multi-stage planetary reducer (9) comprises a housing, an outer gear ring (93) mounted inside the housing, a planetary gear carrier (91) meshed with the inner side of the outer gear ring (93), and a sun gear (94) rotatably meshed with the middle part of the planetary gear carrier (91); the sun gear (94) is a fast rotating shaft end of the multi-stage planetary reducer (9), and the middle part of the sun gear (94) is locked and connected to the screw rod (90) via a shaft rod; a flange (92) is fixedly provided on the upper side of the planetary gear carrier (91), the flange (92) is a slow rotating shaft end of the multi-stage planetary reducer (9), and the flange (92) is bolt-locked with the lower side of the rotating circular plate (52).

7. The auxiliary device for subway station roof construction according to claim 1, characterized in that: The inner L-shaped hook plate (6) and the outer L-shaped hook plate (3) are both provided with guide plate inclined surfaces (31) on opposite sides.

8. The auxiliary device for subway station roof construction according to claim 1, characterized in that: The side elastic tightening assembly comprises a side plate (61) embedded in a side opposite to the inner L-shaped hook plate (6) and a second guide rod (62) penetrating the front and rear sides of the inner L-shaped hook plate (6) and being fastened to the side plate (61); an electric telescopic rod (63) is installed on the outer side of the inner L-shaped hook plate (6); the telescopic end of the electric telescopic rod (63) penetrates the middle of the inner L-shaped hook plate (6); the telescopic end of the electric telescopic rod (63) is connected to a spring group (64) and is elastically connected to the side plate (61) via the spring group (64); The spring group (64) comprises an inner spring (641) and an outer spring (642); a first cushion block (643) is fixedly provided on the rear side of the side plate (61); a second cushion block (644) is fixedly provided on the telescopic end of the electric telescopic rod (63); the inner spring (641) is mounted on a side opposite to the first cushion block (643) and the second cushion block (644); and the outer spring (642) is sleeved on the outside of the first cushion block (643) and the second cushion block (644).

9. The auxiliary device for subway station roof construction according to claim 1, characterized in that: The four sides of the top of the lifting box (1) are fixed with lifting rods (12), and the bottom of the lifting box (1) is provided with four oppositely arranged sliding holes (10). Each of the transmission round rods (21) is movable on the sliding holes (10), and a sliding slot (11) is correspondingly provided on the lower side of the sliding hole (10). The tensioning slide rod (2) is provided with sliding slots (22) on both sides, and the sliding slots (22) are adapted to slide with the sliding slots (11).

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