Environment-friendly dustproof device used based on constructional engineering

Abstract

The invention discloses an environment-friendly dustproof device used based on constructional engineering. The environment-friendly dustproof device comprises a placing piece, a stretching piece and a connecting piece used for connecting the placing piece and the stretching piece. The shielding part comprises a winding piece and shielding cloth which are arranged in the placing piece, and the stretching piece can move to drive the shielding cloth to unfold; the limiting part is arranged in the placing piece; the stretching part is pulled to drive the shielding cloth to unfold to shield the building engineering material, the shielding cloth is wound through the winding part, the placing part and the stretching part are connected through the connecting part to achieve storage, the shielding cloth is extruded through the limiting part to be attached to the bottom wall of the placing part, and the shielding cloth is prevented from loosening during unfolding or winding. The covering range can be enlarged according to the length of a building engineering material, the purposes of shielding and dust prevention are achieved, the size can be reduced through storage so that carrying and carrying can be facilitated, operation is convenient, practicability is improved, it can be ensured that the shielding cloth keeps stable when unfolded or rolled, and the shielding cloth is prevented from loosening.

Description

Technical Field

[0001] The invention relates to the field of construction engineering, in particular to an environmentally friendly dust-proof device used in construction engineering. Background Art

[0002] At the construction site, environmentally friendly dust covers can significantly reduce dust pollution, transform the originally harsh construction site into a beautiful green and environmentally friendly site, and achieve the purpose of controlling dust pollution. However, although the existing environmentally friendly dust covers can be spliced ​​together with multiple dust cover bodies to cover a larger area, the overall volume of a single environmentally friendly dust cover is currently large and plate-shaped, occupying a large area, which is not conducive to operators' handling and transportation, and in the face of different lengths of coverage areas, multiple environmentally friendly dust covers need to be spliced ​​together. This method is cumbersome to operate and has poor practicality. Summary of the invention

[0003] In view of the above problems in the prior art, the present invention is proposed.

[0004] The above technical problems are solved by the following technical solutions: The present invention proposes an environmentally friendly dustproof device for use in construction projects, which includes a placing piece and a stretching piece, and a connecting piece for connecting the placing piece and the stretching piece; a shielding part, the shielding part includes a winding piece and a shielding cloth arranged in the placing piece, and the movement of the stretching piece can drive the shielding cloth to unfold; a limiting part, which is arranged in the placing piece; the stretching piece is pulled to drive the shielding cloth to unfold to shield the construction materials, and the shielding cloth is rolled up by the winding piece. The placing piece and the stretching piece are connected to each other via a connecting piece to achieve storage, and the shielding cloth is squeezed by the limiting part to make it fit with the bottom wall of the placing piece to prevent the shielding cloth from loosening when unfolding or rolling up.

[0005] In a preferred embodiment of the environmentally friendly dust-proof device for use in construction projects according to the present invention: the winding member includes a storage rod arranged in the placing member, the storage rod is provided with a turning handle, and the shielding cloth is wound around the storage rod.

[0006] In a preferred embodiment of the environmentally friendly dust-proof device for use in construction projects described in the present invention: the limiting portion includes a slide groove arranged in the placing piece, a slide rod is arranged in the slide groove, an extrusion piece is arranged on the slide rod, a through groove is arranged on the slide rod, a spring is arranged on the slide rod, a fixing rod is arranged in the slide groove, and the fixing rod is located in the through groove.

[0007] In a preferred embodiment of the environmentally friendly dust-proof device for use in construction projects of the present invention: the extrusion piece is cylindrical.

[0008] In a preferred embodiment of the environmentally friendly dust-proof device for use in construction projects of the present invention: the extruded piece is in the shape of a triangular prism.

[0009] In a preferred embodiment of the environmentally friendly dust-proof device for use in construction projects according to the present invention: the connecting member includes a magnet 1 arranged on the placing member, a magnet 2 is arranged on the stretching member, and the magnet 1 and the magnet 2 are connected by magnetic adsorption.

[0010] In a preferred embodiment of the environmentally friendly dust-proof device for use in construction projects described in the present invention: it also includes a supporting part, the supporting part includes a limiting groove arranged on the side walls of the placing part and the stretching part, a threaded rod 1 is arranged in the limiting groove, a turning handle 2 is arranged on the threaded rod 1, a movable plate is arranged on the outer surface of the threaded rod 1, the movable plate is slidably connected to the limiting groove, and a support plate is arranged on the lower side of the movable plate.

[0011] In a preferred embodiment of the environmentally friendly dust-proof device for use in construction projects described in the present invention: it also includes a clamping portion, the clamping portion includes a groove arranged on the side wall of the support plate, a fixed column is arranged in the groove, a sliding block is arranged in the groove, the sliding block is slidably connected to the fixed column, a connecting plate is arranged on the side wall of the sliding block, a clamping block 1 is arranged on the connecting plate, a sliding groove is arranged on the connecting plate, and a clamping block 2 is arranged in the sliding groove.

[0012] In a preferred embodiment of the environmentally friendly dust-proof device for use in construction projects described in the present invention: a pushing member 1 is provided on the clamping block 2, and the pushing member 1 includes a threaded rod 2 arranged in a sliding groove, and a turning handle 3 is provided on the threaded rod 2.

[0013] In a preferred embodiment of the environmentally friendly dust-proof device for use in construction projects described in the present invention: a pushing member 2 is provided on the clamping block 2, and the pushing member 2 includes a guide column provided on the clamping block 2, a lever is provided on the guide column, a guide groove is provided on the connecting plate, the guide column is slidably connected to the guide groove, and a spring 2 is provided on the clamping block 2.

[0014] The beneficial effects of the present invention are as follows: by arranging placement pieces, stretching pieces, connecting pieces and shielding cloth, the coverage range can be expanded according to the length of the construction materials to achieve the purpose of shielding and dust prevention, and the device can be stored when not in use, reducing the size of the device, making it convenient for operators to carry and transport, and the operation method is convenient and simple, which improves practicality, and by arranging a limiting part, the shielding cloth is always in contact with the bottom wall of the placement piece, ensuring that the shielding cloth can be stably unfolded or rolled up and stably maintained in the desired position to prevent the shielding cloth from loosening, and at the same time, by arranging a supporting part and a clamping part, not only can the use height be flexibly adjusted to meet the needs of different scenes, but also the shielding cloth can be ensured to stably cover the construction materials in the unfolded state, effectively resisting displacement or blowing caused by wind or other external forces, further improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention. Among them:

[0016] Figure 1 The overall schematic diagram of the environmental protection dust prevention device used in construction projects is shown;

[0017] Figure 2 An expanded cross-sectional view of an environmentally friendly dust-proof device used in construction engineering is shown;

[0018] Figure 3 Shows Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 An expanded cross-sectional view of an environmentally friendly dust-proof device used in construction engineering is shown;

[0020] Figure 5 Shows Figure 3 Enlarged view of point B in the middle;

[0021] Figure 6 A partial structural schematic diagram of an environmentally friendly dust-proof device used in construction projects is shown;

[0022] Figure 7 A partial structural schematic diagram of an environmentally friendly dust-proof device used in construction projects is shown;

[0023] Figure 8 The overall schematic diagram of the clamping part of the environmental protection dustproof device used in construction engineering is shown;

[0024] Fig. 9 The figure shows the overall schematic diagram of the clamping part of the environmental protection dustproof device used in construction engineering. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with specific implementation methods and drawings.

[0026] The terms used in the present invention are those general terms currently widely used in the art in consideration of the functions of the present invention, but these terms may vary according to the intention of a person of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in this case, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as a general description based on the meaning of the terms and the present invention.

[0027] Example 1

[0028] Reference Figure 1-Figure 2 The present embodiment provides an environmentally friendly dustproof device for use in construction projects, including a placement member 1 and a stretching member 2, and a connecting member 3 for connecting the placement member 1 and the stretching member 2; a shielding portion 4, the shielding portion 4 includes a reeling member 41 and a shielding cloth 42 arranged in the placement member 1, and the movement of the stretching member 2 can drive the shielding cloth 42 to unfold; a limiting portion 5, which is arranged in the placement member 1; the stretching member 2 is pulled to drive the shielding cloth 42 to unfold to shield the construction project materials, and the shielding cloth 42 is rolled up by the reeling member 41. The placement member 1 and the stretching member 2 are connected via the connecting member 3 to achieve storage and reduce the size, and the shielding cloth 42 is squeezed by the limiting portion 5 to make it fit with the bottom wall of the placement member 1 to prevent the shielding cloth 42 from loosening when unfolding or rolling up;

[0029] Specifically, when shielding construction materials, the stretching member 2 is pulled to drive the shielding cloth 42 to unfold, so that the shielding cloth 42 covers the construction materials, thereby shielding the construction materials and achieving the purpose of dust prevention of the construction materials. During the unfolding process, when there is no need to shield the construction materials, the shielding cloth 42 is rolled up by the rolling member 41, and the stretching member 2 gradually approaches the placement member 1. When the stretching member 2 is connected to the placement member 1 through the connecting member 3, the shielding cloth 42 is completely stored in the placement member 1 to achieve storage, reduce the size of the device, and facilitate the operator to carry and transport. The operation method is convenient and simple, and the practicality is improved.

[0030] The limiting part 5 can squeeze and limit the shielding cloth 42, so that the shielding cloth 42 always fits with the bottom wall of the placement member 1, ensuring that the shielding cloth 42 always remains stable during the unfolding or reeling process, preventing the shielding cloth 42 from loosening, and ensuring that the shielding cloth 42 can be stably unfolded or reeled and stably maintained at the desired position;

[0031] It should be noted that construction materials include sand, cement, bricks, etc., construction waste, and equipment on the construction site;

[0032] Example 2

[0033] Reference Figure 2-Figure 7 This embodiment is different from the first embodiment in that the winding member 41 includes a storage rod 411 disposed in the placement member 1, the storage rod 411 is provided with a turning handle 412, and the shielding cloth 42 is wound around the storage rod 411;

[0034] Specifically, the storage rod 411 is rotatably connected to the placement member 1, and the storage rod 411 passes through the placement member 1 and extends to the outside of the placement member 1 and is fixedly connected to the turning handle 1 412. By turning the turning handle 1 412, the storage rod 411 is driven to rotate, so as to achieve the retraction of the shielding cloth 42, and the storage rod 411 will not hinder the unfolding of the shielding cloth 42.

[0035] The limiting part 5 includes a slide groove 51 arranged in the placing member 1, a slide rod 52 is arranged in the slide groove 51, an extrusion member 53 is arranged on the slide rod 52, a through groove 54 is arranged on the slide rod 52, a spring 55 is arranged on the slide rod 52, a fixing rod 56 is arranged in the slide groove 51, and the fixing rod 56 is located in the through groove 54; the extrusion member 53 is cylindrical;

[0036] Specifically, two slide grooves 51 are provided, and the two slide grooves 51 are symmetrically arranged, the slide rod 52 is slidably connected to the two slide grooves 51, and the slide rod 52 is slidably connected to the placement member 1 through the slide groove 51, and two through grooves 54 and springs 1 55 are provided, and the two through grooves 54 and the two springs 1 55 are symmetrically arranged, the fixed rod 56 is fixedly connected to the inner wall of the slide groove 51, the fixed rod 56 is located in the spring 1 55, the spring 1 55 is fixedly connected to the slide rod 52, and the other end of the spring 1 55 is fixedly connected to the inner wall of the slide groove 51, the slide rod 52 is slidably connected to the fixed rod 56 through the through groove 54, and the cylindrical extrusion piece 53 is rotatably connected to the slide rod 52, and the extrusion piece 53 is made of rubber material;

[0037] The elastic action of the spring 1 55 enables the slide bar 52 to always maintain an appropriate pressure on the extrusion member 53, while the design of the two slide grooves 51 ensures the smooth movement of the slide bar 52, and the cooperation of the fixing rod 56 and the through groove 54 further enhances the stability of the entire structure;

[0038] When in use, the slide bar 52 drives the extrusion member 53 to slide in the slide groove 51 under the action of the through groove 54 and the fixing rod 56, and under the action of the spring 1 55, the slide bar 52 always drives the extrusion member 53 to apply an extrusion force to the shielding cloth 42, thereby playing a role in limiting the extrusion of the shielding cloth 42;

[0039] The connecting member 3 includes a magnet 1 31 disposed on the placing member 1, and a magnet 2 32 is disposed on the stretching member 2, and the magnet 1 31 and the magnet 2 32 are connected by magnetic attraction;

[0040] Specifically, the magnet 1 31 is fixedly connected to the placement member 1, the magnet 2 32 is fixedly connected to the stretching member 2, and the placement member 1 and the stretching member 2 are connected via the magnet 1 31 and the magnet 2 32;

[0041] When in use, in conjunction with Example 1, when shielding construction materials from dust, the stretching member 2 is pulled so that the stretching member 2 drives the shielding cloth 42 to gradually unfold to a suitable position according to the length of the construction materials, thereby expanding the size of the device, shielding the construction materials, and achieving the purpose of dust prevention;

[0042] When there is no need to shield the construction materials from dust, the storage rod 411 is driven to rotate by turning the handle 1 412 to gradually roll up the shielding cloth 42. At the same time, the stretching member 2 gradually moves closer to the placement member 1 as the shielding cloth 42 is rolled up, until the stretching member 2 and the placement member 1 are magnetically adsorbed and connected together by the magnet 1 31 and the magnet 2 32, and the shielding cloth 42 is completely rolled up into the placement member 1 to achieve storage, reduce the size of the device, and facilitate the operator to carry and semi-circle. The operation method is convenient and simple, and the practicality is improved.

[0043] During the unfolding or reeling process, the slide bar 52 drives the extrusion member 53 to continuously apply an extrusion force to the shielding cloth 42 under the action of the spring 1 55, so that the shielding cloth 42 is always in contact with the bottom wall of the placement member 1, ensuring that the shielding cloth 42 is always stable during the unfolding or reeling process, preventing the shielding cloth 42 from loosening, thereby ensuring that the shielding cloth 42 can be stably unfolded or reeled and stably maintained at the desired position. At the same time, under the cooperation of the spring 1 55, the slide groove 51, the through groove 54, the fixing rod 56 and the cylindrical extrusion member 53, the extrusion member 53 applies an extrusion force to the shielding cloth 42 without hindering the unfolding or reeling of the shielding cloth 42, and because the cylindrical extrusion member 53 is rotatably connected to the slide bar 52, the shielding cloth 42 can be smoothly unfolded or reeled;

[0044] Example 3

[0045] Reference Figure 4-Figure 7 , this embodiment is different from the second embodiment in that the extrusion member 53 is in the shape of a triangular prism;

[0046] Specifically, the extrusion piece 53 in the shape of a triangular prism is fixedly connected to the slide bar 52. The extrusion piece 53 in this shape can provide a larger contact area when the extrusion piece 53 contacts the shielding cloth 42, thereby improving the extrusion effect. Figure 5 and Figure 7 The corners of the triangular prism-shaped extrusion piece 53 are provided with arc surfaces 531. The arc surface 531 design reduces the sharpness of the corners, avoids wear or damage to the shielding cloth 42, and reduces the jamming or resistance caused by the corners, ensuring that the shielding cloth 42 can be smoothly unfolded and rolled up. Through the cooperation of the spring 1 55, the slide groove 51, the through groove 54, the fixing rod 56 and the arc surface 531, it is ensured that the extrusion piece 53 will not hinder the unfolding and rolling up of the shielding cloth 42 while applying an extrusion force to the shielding cloth 42;

[0047] The rest of the structure is the same as that of Example 2;

[0048] Example 4

[0049] Reference Figure 2-Figure 4, this embodiment is different from the first embodiment in that it further includes a support portion 6, the support portion 6 includes a limiting groove 61 provided on the side walls of the placing member 1 and the stretching member 2, a threaded rod 1 62 is provided in the limiting groove 61, a turning handle 2 63 is provided on the threaded rod 1 62, a moving plate 64 is provided on the outer surface of the threaded rod 1 62, the moving plate 64 is slidably connected to the limiting groove 61, and a supporting plate 65 is provided on the lower side of the moving plate 64;

[0050] Specifically, the two limiting grooves 61 are symmetrically arranged, the threaded rod 1 62 is rotatably connected to the limiting groove 61, the threaded rod 1 62 is fixedly connected to the turning handle 2 63, the movable plate 64 is provided with a threaded groove adapted to the threaded rod 1 62, the threaded groove is threadedly connected to the threaded rod 1 62, and the two supporting plates 65 are respectively located below the placing member 1 and the stretching member 2;

[0051] When in use, in conjunction with Example 1 and Example 2, when shielding construction materials from dust, first turn the handle 2 63 to drive the threaded rod 1 62 to rotate, so that the movable plate 64 drives the support plate 65 to move downward under the action of the threaded groove, the threaded rod 1 62 and the limiting groove 61 to adjust the height of the placement member 1 and the stretching member 2, so that the placement member 1, the stretching member 2 and the shielding cloth 42 can form a support shed, so that construction materials of different heights can be shielded, and can be flexibly adjusted according to the height of the construction materials to meet the needs of different scenes. Heavy objects such as stones at the construction site can also be placed on the support plate 65 to enhance the stability of the device after it is adjusted to the required height;

[0052] Example 5

[0053] Reference Figure 2-Figure 8 , this embodiment is different from the first embodiment in that it further includes a clamping portion 7, the clamping portion 7 includes a groove 71 provided on the side wall of the support plate 65, a fixing column 72 is provided in the groove 71, a slider 73 is provided in the groove 71, the slider 73 is slidably connected with the fixing column 72, a connecting plate 74 is provided on the side wall of the slider 73, a clamping block 1 75 is provided on the connecting plate 74, a sliding groove 76 is provided on the connecting plate 74, and a clamping block 2 77 is provided in the sliding groove 76;

[0054] Specifically, two grooves 71 are provided, and the two grooves 71 are symmetrically arranged, the fixing column 72 is fixedly connected to the groove 71, the slider 73 is slidably connected to the groove 71, and the side wall of the slider 73 is provided with a through groove 54 adapted to the fixing column 72, so that the slider 73 can be slidably connected to the fixing column 72, the slider 73 is fixedly connected to the connecting plate 74, the clamping block 1 75 is fixedly connected to the connecting plate 74, the clamping block 2 77 is slidably connected to the sliding groove 76, the clamping block 2 77 is located above the clamping block 1 75, and the clamping block 1 75 and the clamping block 2 cooperate to clamp the shielding cloth 42;

[0055] The second clamping block 77 is provided with a pusher 78, and the pusher 78 includes a second threaded rod 781 disposed in the sliding groove 76, and a third turning handle 782 is provided on the second threaded rod 781;

[0056] Specifically, the second threaded rod 781 is rotatably connected to the sliding groove 76, the second threaded rod 781 is fixedly connected to the third turning handle 782, and the second clamping block 77 is provided with a threaded groove adapted to the second threaded rod 781, and the threaded groove is threadedly connected to the second threaded rod 781;

[0057] When in use, in conjunction with Example 1, Example 2 and Example 3, after the shielding cloth 42 covers and shields the construction materials, pull the two sides of the shielding cloth 42 downward so that the two sides of the shielding cloth 42 are located between the corresponding clamping block 1 75 and the clamping block 2 77, and move the connecting plate 74 left and right so that the connecting plate 74 slides left and right to a suitable position under the action of the slider 73, the groove 71 and the fixing column 72, and then turn the turning handle 3 782 to drive the threaded rod 2 781 to rotate, so that the clamping block 2 77 moves downward under the action of the threaded groove, the threaded rod 2 781 and the sliding groove 76, so that the clamping piece 2 cooperates with the clamping piece 1 to clamp the shielding cloth 42, so that the shielding cloth 42 can fit closely with the construction materials, improve the shielding and dustproof effect, ensure that the shielding cloth 42 can cover stably in the unfolded state, and prevent the shielding cloth 42 from being displaced or blown up due to wind or other external forces;

[0058] Example 6

[0059] Reference Figure 7-Figure 9 This embodiment is different from the fifth embodiment in that the second clamping block 77 is provided with a second pusher 79, the second pusher 79 comprises a guide column 791 provided on the second clamping block 77, a lever 792 is provided on the guide column 791, a guide groove 793 is provided on the connecting plate 74, the guide column 791 is slidably connected with the guide groove 793, and a second spring 794 is provided on the second clamping block 77;

[0060] Specifically, refer to Fig. 9 , the guide column 791 is fixedly connected to the clamping block 77, the guide groove 793 is connected to the sliding groove 76, the guide column 791 is slidably connected to the connecting plate 74 through the guide groove 793, the spring 794 is fixedly connected to the clamping block 77, the other end of the spring 794 is fixedly connected to the top wall of the sliding groove 76, the guide column 791 is located in the spring 794, and the dial 792 is fixedly connected to the guide column 791;

[0061] When in use, in conjunction with Example 5, after the shielding cloth 42 covers and shields the construction materials, pull the two sides of the shielding cloth 42 downward, and push the dial hand 792 upward, so that the guide column 791 drives the clamping block 2 77 to move upward under the action of the guide groove 793, and the two sides of the shielding cloth 42 are located between the corresponding clamping block 1 75 and the clamping block 2 77, release the dial hand 792, and the clamping block 2 77 moves downward quickly under the action of the spring 2 794, so that the clamping block 2 77 and the clamping block 1 75 clamp the shielding cloth 42, so that the shielding cloth 42 can fit closely with the construction materials, improve the shielding and dustproof effect, ensure that the shielding cloth 42 can cover stably in the unfolded state, and prevent the shielding cloth 42 from shifting or being blown up due to wind or other external forces, so that the operation is more convenient and the work efficiency is improved;

[0062] The rest of the structure is the same as that of Example 5.

[0063] Finally, it should be pointed out that the methods and devices described in detail above are only embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. An environmentally friendly dust-proof device for use in construction projects, characterized in that: include, A placing piece (1) and a stretching piece (2), and a connecting piece (3) for connecting the placing piece (1) and the stretching piece (2); A shielding portion (4), the shielding portion (4) comprising a reel (41) and a shielding cloth (42) arranged in the placement member (1), and the movement of the stretching member (2) can drive the shielding cloth (42) to unfold; A limiting portion (5) disposed inside the placement member (1); The stretching member (2) is pulled to drive the shielding cloth (42) to unfold to shield the construction materials, the shielding cloth (42) is rolled up by the rolling member (41), the placement member (1) and the stretching member (2) are connected via the connecting member (3) to achieve storage and reduce the size, and the shielding cloth (42) is squeezed by the limiting part (5) to make it fit with the bottom wall of the placement member (1), so as to prevent the shielding cloth (42) from loosening when unfolding or rolling up.

2. The environmentally friendly dust-proof device for use in construction projects according to claim 1 is characterized in that: The winding member (41) comprises a storage rod (411) arranged in the placing member (1), the storage rod (411) is provided with a turning handle (412), and the shielding cloth (42) is wound around the storage rod (411).

3. The environmentally friendly dust-proof device for use in construction projects according to claim 2 is characterized in that: The limiting portion (5) comprises a slide groove (51) arranged in the placing member (1), a slide rod (52) is arranged in the slide groove (51), an extrusion member (53) is arranged on the slide rod (52), a through groove (54) is arranged on the slide rod (52), a spring (55) is arranged on the slide rod (52), a fixing rod (56) is arranged in the slide groove (51), and the fixing rod (56) is located in the through groove (54).

4. The environmentally friendly dust-proof device for use in construction projects according to claim 3 is characterized in that: The extrusion piece (53) is cylindrical.

5. The environmentally friendly dust-proof device for use in construction projects according to claim 3 is characterized by: The extrusion piece (53) is in the shape of a triangular prism.

6. The environmentally friendly dust-proof device for use in construction projects according to claim 1 is characterized by: The connecting member (3) comprises a first magnet (31) arranged on the placing member (1), and a second magnet (32) is arranged on the stretching member (2), and the first magnet (31) and the second magnet (32) are connected by magnetic attraction.

7. The environmentally friendly dust-proof device for use in construction engineering according to claim 1 is characterized by: The invention also comprises a supporting part (6), wherein the supporting part (6) comprises a limiting groove (61) arranged on the side walls of the placing part (1) and the stretching part (2), wherein a threaded rod (62) is arranged in the limiting groove (61), a turning handle (63) is arranged on the threaded rod (62), a movable plate (64) is arranged on the outer surface of the threaded rod (62), the movable plate (64) is slidably connected to the limiting groove (61), and a supporting plate (65) is arranged on the lower side of the movable plate (64).

8. The environmentally friendly dust-proof device for use in construction projects according to claim 1 is characterized by: The invention also comprises a clamping part (7), wherein the clamping part (7) comprises a groove (71) arranged on the side wall of the support plate (65), a fixing column (72) is arranged in the groove (71), a sliding block (73) is arranged in the groove (71), the sliding block (73) is slidably connected with the fixing column (72), a connecting plate (74) is arranged on the side wall of the sliding block (73), a clamping block 1 (75) is arranged on the connecting plate (74), a sliding groove (76) is arranged on the connecting plate (74), and a clamping block 2 (77) is arranged in the sliding groove (76).

9. The environmentally friendly dust-proof device for use in construction projects according to claim 8, characterized in that: The clamping block 2 (77) is provided with a pushing member 1 (78), and the pushing member 1 (78) includes a threaded rod 2 (781) arranged in the sliding groove (76), and the threaded rod 2 (781) is provided with a turning handle 3 (782).

10. The environmentally friendly dust-proof device for use in construction engineering according to claim 8, characterized in that: The second clamping block (77) is provided with a second pushing member (79), and the second pushing member (79) includes a guide column (791) provided on the second clamping block (77), and a lever (792) is provided on the guide column (791). The connecting plate (74) is provided with a guide groove (793), and the guide column (791) is slidably connected to the guide groove (793). The second clamping block (77) is provided with a second spring (794).

Images