Electric dustproof awning for ultra-wide special-shaped foundation pit

Abstract

The invention relates to the field of special-shaped foundation pit dust prevention, in particular to an ultra-wide special-shaped foundation pit electric dustproof awning which comprises a traction mechanism and a guide assembly which are fixed to a concrete retaining wall, a moving mechanism is arranged on one side of the traction mechanism, a curtain is fixed to one side of the moving mechanism, the traction mechanism comprises a motor, and a rotating wheel is fixed to the output end of the motor. According to the invention, the motor can drive the rotating wheel to rotate and the circulating ropes to move, the first pulley block installed on the circulating rope on the upper portion drives the curtain to move towards the direction of the motor, and the moving mechanism drives the curtain to move towards the direction of the motor. The second pulley block installed on the lower circulating rope gradually gets away from the motor, so that the curtain is unfolded in two directions at the same time, the curtain unfolded in the two sides can be continuously adjusted in two directions, the foundation pit can be covered, and meanwhile the situation that the curtain is stacked at the tail end of a moving path due to excessive displacement is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of dust prevention of special-shaped foundation pit, in particular to an electric dust prevention sky curtain for super-wide special-shaped foundation pit. BACKGROUND

[0002] The foundation pit refers to the deep and wide cave or pit opening excavated in the building construction process for the construction of underground structure, which is usually used for building underground parking lot, underground shopping mall, subway station, basement and other underground structures, and the shape of the foundation pit is determined by the engineering requirement, which is roughly divided into two categories of regular and special-shaped; The foundation pit construction site usually generates a large amount of dust, which may have negative effects on the surrounding environment and personnel health, therefore, the implementation of dust prevention operation is also the top priority in the process of foundation pit excavation and underground structure construction, the foundation pit is excavated by wet operation, and the dust prevention curtain is covered with excavation, but the dust prevention curtain itself has low structural strength, repeated uncovering and covering can easily damage the dust prevention curtain, affect the dust prevention effect, and also consume a large amount of labor; In order to reduce the consumption of dust prevention curtain and labor in the current foundation pit construction process, an electric dust prevention sky curtain is used to suspend and cover the foundation pit, but the existing electric dust prevention sky curtain is usually suitable for regular-shaped foundation pit, and the expansion of the dust prevention sky curtain is from one end of the foundation pit to the corresponding end, when facing the special-shaped foundation pit, the expansion and control mode of the sky curtain cannot completely adapt to the special shape of the special-shaped foundation pit, which leads to that the sky curtain cannot effectively cover all areas, or excessive displacement leads to stacking phenomenon of the sky curtain at the end of the moving path of the sky curtain, thereby affecting the dust prevention effect. SUMMARY

[0003] Therefore, the purpose of the present application is to provide an electric dust prevention sky curtain for super-wide special-shaped foundation pit, which can solve the technical problem that the existing electric dust prevention sky curtain cannot be applied to special-shaped foundation pit, and the expansion and control mode of the sky curtain cannot completely adapt to the special shape of the special-shaped foundation pit, which leads to that the sky curtain cannot effectively cover all areas, or excessive displacement leads to stacking phenomenon of the sky curtain at the end of the moving path of the sky curtain.

[0004] In order to achieve the above purpose, the present application provides an electric dust prevention sky curtain for super-wide special-shaped foundation pit, which is used to cover the foundation pit opened on the surface of the road, and the periphery of the foundation pit is provided with a concrete retaining wall, which comprises a traction mechanism and a guide assembly fixed on the concrete retaining wall, one side of the traction mechanism is provided with a moving mechanism driven by the traction mechanism, and one side of the moving mechanism is fixed with a curtain for covering the foundation pit; The traction mechanism comprises a fixed frame and an assembly frame, a motor is assembled on one side of the assembly frame, a rotating wheel is fixed on the output end of the motor, an intermediate frame body is also installed on the fixed frame, guide wheels are rotatably arranged on the upper and lower ends of the intermediate frame body, and a circulating rope is wrapped around the rotating wheel and is attached to the outer side of the guide wheels; The moving mechanism comprises a plurality of groups of first pulley groups and second pulley groups which are structurally identical, and a fine adjustment assembly is arranged between every two adjacent groups of first pulley groups or second pulley groups.

[0005] Preferably, the fixed frame is fixedly provided with an extension arm at one end, the intermediate frame body is fixedly arranged on the extension arm, and a U-shaped frame is further fixedly arranged on the fixed frame, and a guide cable is fixedly arranged in the U-shaped frame.

[0006] Preferably, the guide assembly comprises a support which is structurally identical to the fixed frame, the support is fixedly provided with a guide rope at one end, and a sliding piece is slidably arranged on the guide rope.

[0007] Preferably, the first pulley group comprises a first frame, a first roller is assembled in the first frame, the first roller is arranged in rolling mode on the guide cable, and a first rotating shaft is further arranged in the first frame to fix the first roller.

[0008] Preferably, the first frame is assembled with a connecting piece at one side, the connecting piece is provided with a first mounting piece fixedly connected with the first frame at the upper end, and a second mounting piece is arranged at the lower end of the connecting piece.

[0009] Preferably, the second mounting piece is fixedly provided with a second frame at the lower end, the second frame is provided with a buckle for fixing a curtain at one side, two groups of second rollers are assembled in the second frame, the circulating rope passes through between the two groups of second rollers, a connecting plate is further arranged in the second frame to be connected with the fine adjustment assembly, and a second rotating shaft is further arranged in the second frame to fix the two groups of second rollers.

[0010] Preferably, the fine adjustment assembly comprises an outer sleeve, a first inner sleeve is fixedly arranged in the outer sleeve, the first inner sleeve is fixedly connected with a second inner sleeve at one end, and a moving cylinder is movably arranged at one end of the outer sleeve.

[0011] Preferably, the outer sleeve is movably provided with a first connecting piece connected with the connecting plate at the other end, the first connecting piece is provided with a first spring located in the first inner sleeve at one side, and a piston is fixedly connected with the first spring at one end.

[0012] Preferably, a ball is movably arranged in the second inner sleeve, a second spring is fixedly arranged outside the ball and located in the moving cylinder, and a second connecting piece is fixedly connected with the second spring at one end.

[0013] Preferably, a plurality of frame beams are poured in the foundation pit, grooves are arranged on the periphery of the fixed frame, an inclined support rod is fixedly arranged on one side of the fixed frame, and a protective plate is further assembled on one side of the fixed frame.

[0014] The beneficial effects of the present application are as follows: The motor on one side of the assembling frame can drive the rotating wheel to rotate and move the circulating rope, and the guide wheel can ensure that the circulating rope does not shake too much during movement. The circulating rope has two movement states, wherein the movement direction of the circulating rope body located at the upper side is towards the motor, and the movement direction of the circulating rope body located at the lower side is away from the motor. The first pulley set installed on the circulating rope at the upper side drives the curtain to move towards the motor, and the second pulley set installed on the circulating rope at the lower side gradually moves away from the motor, so that the curtain is expanded in two directions at the same time. In this process, the fine adjustment assembly between the first pulley set and the second pulley set of the adjacent two groups can ensure that the distance between the first pulley sets of the adjacent two groups does not change too much. The curtain expanded to both sides can be continuously adjusted in two directions, which can not only cover the foundation pit, but also avoid the stacking of the curtain at the end of the moving path due to excessive displacement.

[0015] The super-wide special-shaped foundation pit electric dustproof curtain adopts a steel wire rope and a pulley system, fixed supports are arranged on both sides of the foundation pit, single-span transverse traction is adopted, the length of the curtain changes with the position of the foundation pit retaining wall, so that the dustproof curtain can be installed in the entire range of the foundation pit, and the dust reduction effect is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only illustrate the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0017] Figure 1 The overall structure schematic diagram of the super-wide special-shaped foundation pit electric dustproof curtain provided by an embodiment of the present application is shown in the figure. Figure 2 The overall structure schematic diagram of the super-wide special-shaped foundation pit electric dustproof curtain provided by an embodiment of the present application is shown in the figure. Figure 1 The enlarged structure schematic diagram of A of the super-wide special-shaped foundation pit electric dustproof curtain provided by an embodiment of the present application is shown in the figure. Figure 3 The traction mechanism structure schematic diagram of the super-wide special-shaped foundation pit electric dustproof curtain provided by an embodiment of the present application is shown in the figure. Figure 4 The enlarged structure schematic diagram of B of the super-wide special-shaped foundation pit electric dustproof curtain provided by an embodiment of the present application is shown in the figure. Figure 3 The enlarged structure schematic diagram of B of the super-wide special-shaped foundation pit electric dustproof curtain provided by an embodiment of the present application is shown in the figure. Figure 5 The guide assembly structure schematic diagram of the super-wide special-shaped foundation pit electric dustproof curtain provided by an embodiment of the present application is shown in the figure. Figure 6 The moving mechanism structure schematic diagram of the super-wide special-shaped foundation pit electric dustproof curtain provided by an embodiment of the present application is shown in the figure. Figure 7 The first pulley set structure schematic diagram of the super-wide special-shaped foundation pit electric dustproof curtain provided by an embodiment of the present application is shown in the figure. Figure 8 The fine adjustment assembly structure schematic diagram of the super-wide special-shaped foundation pit electric dustproof curtain provided by an embodiment of the present application is shown in the figure. Figure 9 The special-shaped foundation pit electric dustproof curtainFigure 1 Effect schematic diagram after shielding.

[0018] Reference numerals in the drawings are: 1, road surface; 11, foundation pit; 12, concrete retaining wall; 13, beam; 2, traction mechanism; 21, fixing frame; 211, groove; 212, extension arm; 22, inclined strut; 23, assembling frame; 231, protective plate; 24, motor; 241, rotating wheel; 25, intermediate frame body; 251, guide wheel; 26, circulating rope; 27, U-shaped frame; 28, guide cable; 3, moving mechanism; 31, first pulley block; 32, fine adjustment assembly; 321, outer sleeve; 322, first inner sleeve; 323, second inner sleeve; 324, moving sleeve; 325, first connecting plate; 3251, first spring; 3252, piston; 326, round ball; 3261, second spring; 3262, second connecting plate; 33, second pulley block; 34, first frame; 341, first roller; 342, first rotating shaft; 35, connecting piece; 351, first mounting plate; 352, second mounting plate; 36, second frame; 361, buckle; 362, second roller; 363, connecting plate; 364, second rotating shaft; 4, curtain; 5, guiding assembly; 51, support; 52, guiding rope; 53, sliding piece. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with specific examples.

[0020] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the present application should be understood as their common meanings to those skilled in the art to which the present application pertains. The terms "first", "second" and similar terms used in the present application do not indicate any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the components or objects before the terms encompass the components or objects listed after the terms and their equivalents, without excluding other components or objects. The terms "connect" or "connected" and similar terms do not mean physical or mechanical connection, but can include electrical connection, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like only represent relative positional relationships, which can change accordingly when the absolute positions of the described objects change.

[0021] In order to further understand the present application, the present application will be described in detail below with reference to the drawings.

[0022] In combination with Figures 1-4 , and Figure 6The application provides an ultra-wide special-shaped foundation pit electric dustproof curtain, which is used for covering a foundation pit 11 opened on the surface of a road 1, a concrete retaining wall 12 is arranged on the periphery of the foundation pit 11, and the ultra-wide special-shaped foundation pit electric dustproof curtain comprises a traction mechanism 2 and a guide assembly 5 fixed on the concrete retaining wall 12.

[0023] The traction mechanism 2 comprises a fixing frame 21 and an assembling frame 23, the assembling frame 23 is assembled with a motor 24 on one side, a rotating wheel 241 is fixed at the output end of the motor 24, an intermediate frame body 25 is further installed on the fixing frame 21, guide wheels 251 are rotatably arranged at the upper and lower ends of the intermediate frame body 25, and circulating ropes 26 are attached to the outer sides of the guide wheels 251 and crossly wrap around the rotating wheel 241.

[0024] The moving mechanism 3 comprises a plurality of groups of first pulley sets 31 and second pulley sets 33 which are basically identical in structure, and a fine adjustment assembly 32 is arranged between every two adjacent groups of the first pulley sets 31 or the second pulley sets 33.

[0025] Firstly, the motor 24 on one side of the assembling frame 23 can drive the rotating wheel 241 to rotate and the circulating ropes 26 to move, the guide wheels 251 at the upper and lower ends of the intermediate frame body 25 can ensure that the circulating ropes 26 do not shake too much during movement, and the circulating ropes 26 have two movement states, wherein the movement direction of the circulating ropes 26 at the upper part is towards the motor 24, and the movement direction of the circulating ropes 26 at the lower part is away from the motor 24.

[0026] Secondly, the first pulley sets 31 installed on the circulating ropes 26 at the upper part drive the curtain 4 to move towards the motor 24, and the second pulley sets 33 installed on the circulating ropes 26 at the lower part gradually move away from the motor 24, so that the curtain 4 is expanded in two directions at the same time, in the process, the fine adjustment assembly 32 between every two adjacent groups of the first pulley sets 31 or the second pulley sets 33 can ensure that the distance between every two adjacent groups of the first pulley sets 31 does not change too much, the curtain 4 expanded to the two sides can be continuously adjusted in two directions, so that the curtain 4 not only covers the foundation pit 11, but also avoids the stacking of the curtain 4 at the end of the moving path due to excessive displacement, and the covering effect is as shown in the figure. Figure 9

[0027] In combination Figures 2-8 In the embodiment, an extension arm 212 is fixedly arranged at one end of the fixing frame 21, the intermediate frame body 25 is fixedly arranged on the extension arm 212, a U-shaped frame 27 is further fixedly arranged on the fixing frame 21, and a guide cable 28 is fixedly arranged in the U-shaped frame 27. ​Further, the fixed arrangement between the extension arm 212 and the intermediate frame body 25 not only reinforces the arrangement of the guide wheel 251, but also provides stability for the movement of the circulating rope 26. Meanwhile, the U-shaped frame 27 and the guide cable 28 fixed thereon can provide stability for the movement of the first pulley set 31 and the second pulley set 33.

[0028] In the embodiment, the guide assembly 5 comprises a bracket 51 which is substantially the same as the fixed frame 21. The bracket 51 is fixedly arranged with a guide rope 52 at one end. The guide rope 52 is slidably arranged with a sliding piece 53.

[0029] Further, the bracket 51, the guide rope 52 and the sliding piece 53 are used to cooperate with the first pulley set 31 and the second pulley set 33, so as to ensure that the curtain 4 can be smoothly unfolded and cover the foundation pit 11.

[0030] In the embodiment, the first pulley set 31 comprises a first frame 34. The first frame 34 is internally assembled with a first roller 341 which is rollingly arranged on the guide cable 28. The first frame 34 is also internally provided with a first rotating shaft 342 for fixing the first roller 341. Further, the first roller 341 located above the guide cable 28 makes the center of gravity of the first pulley set 31 always perpendicular to the bottom surface, which plays a stabilizing role on the entire first pulley set 31. The first rotating shaft 342 is internally assembled with a high-lubricity bearing, so that the first roller 341 does not stop rotating.

[0031] In the embodiment, the first frame 34 is assembled with a connecting piece 35 at one side. The connecting piece 35 is provided with a first mounting piece 351 fixedly connected with the first frame 34 at the upper end. The connecting piece 35 is provided with a second mounting piece 352 at the lower end. Further, the connecting piece 35 is used to connect the structures between the first pulley set 31. The first mounting piece 351 and the second mounting piece 352 at the upper and lower ends of the connecting piece 35 are both provided with threaded holes for bolt connection.

[0032] In the embodiment, the second mounting piece 352 is fixedly mounted with a second frame 36 at the lower end. The second frame 36 is provided with a buckle 361 for fixing the curtain 4 at one side. The second frame 36 is internally assembled with two groups of second rollers 362. The circulating rope 26 passes between the two groups of second rollers 362. The second frame 36 is also internally provided with a connecting plate 363 for connecting with the fine adjustment assembly 32. The second frame 36 is also internally provided with a second rotating shaft 364 for fixing the two groups of second rollers 362.

[0033] Further, two groups of second rollers 362 inside the second frame 36 are used to contact the circulating rope 26, and the two groups of second rollers 362 can better fit the circulating rope 26, thereby better receiving the power transmitted by the circulating rope 26. The second shaft 364 is internally provided with a low-lubricity bearing, so that the rolling friction coefficient of the second roller 362 is higher than that of the first roller 341, so that the second frame 36 can be smoothly driven by the moving circulating rope 26.

[0034] In the embodiment, the fine adjustment assembly 32 comprises an outer sleeve 321, a first inner sleeve 322 is fixedly arranged inside the outer sleeve 321, a second inner sleeve 323 is fixedly connected to one end of the first inner sleeve 322, and a moving sleeve 324 is movably arranged at one end of the outer sleeve 321.

[0035] Further, the first inner sleeve 322 communicates with the second inner sleeve 323, but the diameter of the second inner sleeve 323 is smaller than the inner diameter of the first inner sleeve 322, so that the internal space sizes of the first inner sleeve 322 and the second inner sleeve 323 are different, and the moving sleeve 324 can enter the outer sleeve 321.

[0036] In the embodiment, the outer sleeve 321 movably arranged at the other end is provided with a first connecting piece 325 connected with the connecting plate 363, the first connecting piece 325 is provided with a first spring 3251 located inside the first inner sleeve 322 on one side, and the first spring 3251 is fixedly connected with a piston 3252 at one end. Further, when the two adjacent second frames 36 are too far apart when the second frame 36 starts to move, the connecting plate 363 drives the first connecting piece 325 to move, the moving first connecting piece 325 stretches the first spring 3251, and the second frame 36 in front has a suitable displacement equivalent, and the stretched first spring 3251 drives the piston 3252 to move inside the first inner sleeve 322.

[0037] In the embodiment, the second inner sleeve 323 movably arranged inside is provided with a ball 326, the ball 326 is fixedly provided with a second spring 3261 located inside the moving sleeve 324 on the outside, and the second spring 3261 is fixedly connected with a second connecting piece 3262 at one end.

[0038] Further, the moving piston 3252 makes the first inner cylinder 322 inside at negative pressure, so that the ball 326 moves inside the second inner cylinder 323, and the second spring 3261 is stretched, and when the two groups of adjacent second frames 36 are stable, the second spring 3261 and the first spring 3251 are retracted, and in the process, because the first inner cylinder 322 inside is still at negative pressure, the physical properties of the second spring 3261 and the first spring 3251 from the center are avoided, so that the two groups of adjacent second frames 36 will not be too close, and the first inner cylinder 322 and the second inner cylinder 323 with different internal space sizes can make the displacement of the piston 3252 and the ball 326 form a ratio, which ensures the spacing between the two groups of adjacent second frames 36, and also ensures that the second spring 3261 and the first spring 3251 will not rebound when retracted, so that the piston 3252 and the ball 326 will not be displaced again.

[0039] In the embodiment, a plurality of beam frames 13 are poured inside the foundation pit 11, grooves 211 are formed on the periphery of the fixing frame 21, the oblique support rod 22 is fixed on one side of the fixing frame 21, and the protection plate 231 is assembled on one side of the assembling frame 23.

[0040] Further, the oblique support rod 22 is arranged to strengthen the overall structural strength of the fixing frame 21, and the protection plate 231 on one side of the assembling frame 23 is arranged to protect important components such as the motor 24 and the circulating rope 26.

[0041] As shown in one specific embodiment, Figure 9 In one specific embodiment, when the steel frame type dustproof sky screen is used in the super-wide special-shaped foundation pit, only four excavation working surfaces can be covered, and the total area is 4308 square meters. However, the super-wide special-shaped foundation pit electric dustproof sky screen according to the embodiment of the present application can almost cover the entire top of the foundation pit, and the total area is 16128 square meters.

[0042] It should be understood by those skilled in the art that the above discussion of any embodiment is only exemplary and is not intended to limit the scope of the present application (including claims) to these examples; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above. In order to be brief, they are not provided in details.

[0043] The present application is intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations, alternatives and equivalents should be considered as falling within the scope of the present application.

Claims

1. A super-wide special-shaped foundation pit electric dustproof curtain for covering a foundation pit, wherein a concrete retaining wall is arranged on the periphery of the foundation pit, characterized in that, The super-wide special-shaped foundation pit electric dustproof curtain comprises a traction mechanism and a guide assembly fixed on a concrete retaining wall, one side of the traction mechanism is provided with a moving mechanism driven thereby, and one side of the moving mechanism is fixed with a curtain for covering the foundation pit; The traction mechanism comprises a fixed frame and an assembly frame, the assembly frame is assembled with a motor on one side, a rotating wheel is fixed at the output end of the motor, an intermediate frame body is further installed on the fixed frame, guide wheels are rotatably arranged at the upper and lower ends of the intermediate frame body, and a circulating rope is cross-wound on the rotating wheel and attached to the outer side of the guide wheels. The moving mechanism comprises a plurality of groups of first pulley blocks and second pulley blocks, and a fine adjustment assembly is arranged between adjacent two groups of first pulley blocks or second pulley blocks.

2. The ultra-wide shaped foundation pit electric dustproof sky curtain according to claim 1, characterized in that, One end of the fixed frame is fixedly provided with an extension arm, the intermediate frame body is fixedly arranged on the extension arm, a U-shaped frame is further fixedly arranged on the fixed frame, and a guide cable is fixedly arranged in the U-shaped frame.

3. The ultra-wide shaped foundation pit electric dustproof sky curtain according to claim 2, characterized in that, The guide assembly comprises a support which is basically the same in structure as the fixed frame, a guide rope is fixedly arranged at one end of the support, and a sliding piece is slidably arranged on the guide rope.

4. The ultra-wide shaped foundation pit electric dust-proof sky curtain according to claim 3, characterized in that, The first pulley block comprises a first frame, a first roller is assembled in the first frame, the first roller is rotatably arranged on the guide cable, and a first rotating shaft for fixing the first roller is further arranged in the first frame.

5. An ultra-wide shaped foundation pit electric dust-proof sky curtain according to claim 4, characterized in that, A connecting piece is assembled at one side of the first frame, a first mounting piece fixedly connected with the first frame is arranged at the upper end of the connecting piece, and a second mounting piece is arranged at the lower end of the connecting piece.

6. An ultra-wide shaped foundation pit electric dust-proof sky curtain according to claim 5, characterized in that, A second frame is fixedly arranged at the lower end of the second mounting piece, a buckle for fixing the curtain is arranged at one side of the second frame, two groups of second rollers are assembled in the second frame, the circulating rope passes through between the two groups of second rollers, a connecting plate connected with the fine adjustment assembly is further arranged in the second frame, and a second rotating shaft for fixing the two groups of second rollers is further arranged in the second frame.

7. An ultra-wide shaped foundation pit electric dust-proof sky screen according to claim 6, characterized in that, The fine adjustment assembly comprises an outer sleeve, a first inner sleeve is fixedly arranged in the outer sleeve, a second inner sleeve is fixedly connected at one end of the first inner sleeve, and a moving cylinder is movably arranged at one end of the outer sleeve.

8. The ultra-wide shaped foundation pit electric dust-proof sky curtain according to claim 7, characterized in that, A first connecting piece connected with the connecting plate is movably arranged at the other end of the outer sleeve, a first spring located in the first inner sleeve is arranged at one side of the first connecting piece, and a piston is fixedly connected at one end of the first spring.

9. The ultra-wide shaped foundation pit electric dust-proof sky curtain according to claim 8, characterized in that, A ball is movably arranged in the second inner sleeve, a second spring located in the moving cylinder is fixedly arranged at the outer side of the ball, and a second connecting piece is fixedly connected at one end of the second spring.

10. The ultra-wide shaped foundation pit electric dust-proof sky curtain according to claim 1, characterized in that, A plurality of frame beams are poured in the foundation pit, grooves are arranged on the periphery of the fixed frame, inclined struts are fixed at one side of the fixed frame, and protection plates are further assembled at one side of the assembly frame.

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