A construction auxiliary mechanical equipment

Abstract

The application provides a kind of building construction auxiliary machinery and equipment, belongs to building construction technical field.Its technical scheme is: including the positioning mechanism being arranged above floor and the plugging mechanism being arranged below floor, the operating part is connected between positioning mechanism and plugging mechanism;Positioning mechanism includes mounting plate, the lower surface of mounting plate is provided with several groups of telescopic mechanism;Plugging mechanism includes plugging disc;Operating part includes connecting rod, one end of connecting rod is arranged at the center of plugging disc, the other end of connecting rod is arranged at the center of mounting plate.The beneficial effects of the application are: the device structure is simple, a single worker can complete hole plugging alone, it is more convenient to construct, in addition, after construction is completed, it is not necessary to erect ladder and other tools from below floor to remove, greatly improves construction efficiency, reduces labor intensity.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and more particularly to a building construction auxiliary mechanical equipment. Background Technology

[0002] In building construction, to meet the needs of the main structure construction, openings for electrical appliances, kitchens, and bathrooms are usually left in the floor slabs. After the main structure is completed, these openings are sealed during secondary construction. Current methods for sealing openings typically involve erecting a steel pipe frame and bottom formwork below the opening. Top supports installed on the steel pipe frame support the bottom formwork to ensure the cement grout is supported during sealing. Once the cement grout inside the opening has solidified, the bottom formwork is removed.

[0003] Currently, typical residential buildings are generally about 3 meters high, while large public buildings and commercial buildings often have a net height of tens of meters. The construction operation using steel pipe scaffolding for support is already very labor-intensive. When sealing openings in buildings with a net height of tens of meters, because steel pipes are slender rods, steel pipe scaffolding needs to be erected to ensure the stability of the support, making the construction even more complicated. A single worker simply cannot complete the sealing of the openings by himself. In addition to erecting steel pipe scaffolding under the floor slab, the steel pipe scaffolding must also be dismantled downstairs after the construction on the floor slab is completed, which greatly affects the construction efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a simple-to-operate auxiliary mechanical device for building construction that can easily seal up floor openings.

[0005] This invention is achieved through the following measures:

[0006] A construction auxiliary mechanical device, characterized in that it includes a positioning mechanism disposed above the floor slab and a sealing mechanism disposed below the floor slab, wherein an operating part is provided between the positioning mechanism and the sealing mechanism;

[0007] The positioning mechanism includes a mounting plate, and the lower surface of the mounting plate is provided with several sets of telescopic mechanisms.

[0008] The sealing mechanism includes a sealing disc, the diameter of which is smaller than the diameter of the opening to be sealed;

[0009] The operating part includes a connecting rod, one end of which is located at the center of the sealing disc, and the other end of which is located at the center of the mounting plate.

[0010] The invention also has the following specific features:

[0011] Both ends of the outer surface of the connecting rod are provided with external threads, and the center of the sealing plate is provided with a threaded blind hole that mates with the external threads along the axial direction. The center of the mounting plate is provided with a threaded through hole that mates with the external threads along the axial direction. The two ends of the connecting rod are respectively screwed into the corresponding threaded blind hole and the threaded through hole.

[0012] The sealing mechanism further includes an annular groove on the outer arc surface of the sealing disc. The lower side of the sealing disc away from the positioning mechanism is provided with a plurality of circumferentially distributed sliding grooves. The sliding grooves pass through the annular grooves, and the outer end of the inner side of the sliding grooves away from the center of the sealing discs passes through the sealing discs. A matching sliding plate is slidably disposed in the sliding grooves. A fan-shaped slider is disposed on the sliding plate. The fan-shaped slider is slidably engaged with the annular grooves. A round rod is disposed at one end of the sliding plate near the center of the sealing discs.

[0013] A rotating shaft is provided at the center of the lower side of the sealing disc, and a disc is provided around the rotating shaft. The disc is provided with an arc-shaped groove that cooperates with a plurality of round rods. The round rods are placed in the corresponding arc-shaped grooves. When the disc rotates, it drives the plurality of round rods to slide in the arc-shaped grooves, thereby driving the plurality of sliding plates to slide along the grooves, and thereby driving the plurality of fan-shaped sliders to slide simultaneously in the annular grooves along the radial direction of the sealing disc. When the plurality of fan-shaped sliders slide outward, the diameter or circular area of ​​the sealing disc will increase.

[0014] Furthermore, the fan-shaped slider can be completely hidden within the annular groove after sliding towards the center of the sealing disc.

[0015] The connecting rod is a circular tube with both its upper and lower ends open. A through circular hole is provided at the center of the threaded blind hole, and the diameter of the circular hole is smaller than the inner diameter of the circular tube. The rotating shaft is rotatably mounted within the circular hole. Specifically, the rotating shaft can be connected to the circular hole via a bearing. The upper end of the rotating shaft extends upwards through the connecting rod and is equipped with a handle. Rotating the handle drives the rotating shaft to rotate, thereby driving the disc to rotate, ultimately realizing the sliding of the several fan-shaped sliders.

[0016] A through-hole for steel wire is provided on the outer side of the connecting rod, and the through-hole for steel wire is close to the upper external thread.

[0017] The handle includes a crossbar, a rectangular rod is provided in the middle of the crossbar, and a rectangular groove is provided on the upper end face of the corresponding rotating shaft, with the lower end of the rectangular rod inserted into the rectangular groove.

[0018] An arc-shaped groove is provided on the upper side of the fan-shaped slider away from the slide plate. The arc-shaped groove is close to the outer arc surface of the fan-shaped slider. An arc-shaped block is slidably disposed in the arc-shaped groove. The inner arc surface of the arc-shaped block cooperates with the outer arc surface of the sealing plate. That is, when the fan-shaped slider slides to the limit position outward, the arc-shaped block slides upward and just fits against the outer arc surface of the sealing plate.

[0019] Several springs are provided between the inner bottom surface of the arc-shaped block and the arc-shaped groove. One end of the spring is fixed to the arc-shaped block, and the other end of the spring is fixed to the inner bottom surface of the arc-shaped groove. When the arc-shaped block is pressed down, the spring is compressed, and the arc-shaped block can be completely housed in the arc-shaped groove.

[0020] A lead screw is provided on the lower side of the arc-shaped block one, and a through hole is provided on the corresponding fan-shaped slider and the slide plate. After the lead screw passes through the through hole downward, a handle is provided. A matching nut is provided on the periphery of the lead screw between the handle and the slide plate. When using this device, the nut can be rotated downward. When the fan-shaped slider slides outward, the arc-shaped block one will slide upward under the action of the spring. When it is necessary to store it, the arc-shaped block one can be compressed downward by pulling the handle and finally stored in the arc-shaped groove one. Then, the nut is rotated upward to limit and fix it. Finally, by rotating the handle, the fan-shaped slider can be stored in the annular groove.

[0021] An arc-shaped groove is provided on one end face of the arc-shaped block one. An arc-shaped block two is slidably disposed within the arc-shaped groove two. A groove is provided on the upper side of the arc-shaped block two near the opening of the arc-shaped groove two. An airbag one is disposed within the groove. An airbag two is disposed between the inner end face of the arc-shaped groove two and the arc-shaped block two. Both the airbag one and the airbag two are provided with inflation hoses. The inflation hoses can be connected to the outside and connected to an external air source through the inner side of the connecting rod. When the fan-shaped slider slides outward to its limit position, the arc-shaped block one is in contact with the spring. Under the action of the airbag, it slides upward and fits against the outer arc surface of the sealing plate. Then, the second airbag is inflated, causing the second arc block to slide out and abut against the side of the adjacent fan-shaped slider. The size of the groove and its position on the second arc block are matched with the gap between the adjacent two fan-shaped sliders in the extreme position. Then, the first airbag is inflated and fills the gap between the adjacent two fan-shaped sliders. At the same time, the first airbag expands upward and extends beyond the upper side of the sealing plate, so that it can be pressed against the lower side of the floor slab.

[0022] The mounting plate is a cross-shaped positioning plate, and the telescopic mechanism is an electric telescopic rod. There are four sets of electric telescopic rods, which are evenly distributed on the lower surface of the cross-shaped positioning plate. In use, the four sets of electric telescopic rods are distributed around the opening to be sealed.

[0023] The upper side of the arc-shaped block is provided with an elastic rubber pad, which can prevent concrete leakage after being compressed.

[0024] The usage method is as follows:

[0025] S1. First, apply concrete release agent to the outer periphery of the connecting rod and the sealing plate. Then, rotate the nut downward to release the nut's limit. Then, insert the sealing plate of this device downward into the hole to be sealed and make the sealing plate extend downward beyond the lower side of the floor slab. At this time, the lower side of the positioning mechanism is attached to the upper side of the floor slab to support the entire device.

[0026] S2. Rotate the handle to make the disc rotate through the rotating shaft, thereby driving several round rods to slide in the arc-shaped groove, thereby driving several sliding plates to slide along the groove, and finally causing several fan-shaped sliders to slide outward to their limit positions. Then, the arc-shaped block slides upward under the action of the spring and fits against the outer arc surface of the sealing disc.

[0027] S3. Inflate the second airbag so that the second arc-shaped block slides out and abuts against the side of the adjacent fan-shaped slider;

[0028] S4. Start the electric telescopic rod until the upper side of several of the arc-shaped blocks presses against the lower side of the floor slab outside the opening;

[0029] S5. Inflate the airbag to expand it and fill the gap between the adjacent fan-shaped sliders on both sides, while pressing it against the lower side of the floor slab.

[0030] S6. Use a flat shovel and a plastic bucket to pour cement slurry into the hole until the cement slurry overflows from the hole.

[0031] S7. After the cement slurry reaches the construction design requirements, remove the handle, then rotate the cross-shaped positioning plate to disengage it from the rotating shaft, then fix the steel wire rope in the steel wire hole, then use a wooden mallet or other tools to knock the connecting rod downwards until the connecting rod and the sealing mechanism disengage from the floor slab, and finally lower the connecting rod and the sealing mechanism to the ground below the floor slab using the steel wire rope, and finally clean and store the equipment.

[0032] The beneficial effects of this invention are as follows: the device has a simple structure, allowing a single worker to complete the sealing of the opening, making construction more convenient. In addition, after construction is completed, there is no need to set up ladders or other tools from under the floor slab for dismantling, which greatly improves construction efficiency and reduces labor intensity. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0034] Figure 2 This is a schematic diagram of the overall structure of the fan-shaped slider after it has been stored in an embodiment of the present invention.

[0035] Figure 3 This is a schematic diagram of the lower side of an embodiment of the present invention.

[0036] Figure 4 for Figure 3 A magnified view of A in the middle.

[0037] Figure 5 This is a schematic diagram of the structure of the sealing disc and related components in an embodiment of the present invention.

[0038] Figure 6 This is a schematic diagram of the structure of the sealing disc and the shaft-related components in an embodiment of the present invention.

[0039] Figure 7 This is a schematic diagram of the structure of the fan-shaped slider components in an embodiment of the present invention.

[0040] Figure 8 This is a schematic diagram of the structure of the arc-shaped block II related components in an embodiment of the present invention.

[0041] Figure 9 This is a schematic diagram of the device installed in a floor opening according to an embodiment of the present invention.

[0042] The attached diagram is labeled as follows: 1. Sealing disc; 2. Electric telescopic rod; 3. Connecting rod; 4. Cross-shaped positioning plate; 5. Rotating shaft; 6. Handle; 7. Arc-shaped block one; 8. Fan-shaped slider; 9. Arc-shaped block two; 10. Arc-shaped groove; 11. Disc; 12. Round rod; 13. Slide plate; 14. Nut; 15. Lead screw; 16. Annular groove; 17. Groove; 18. Rectangular groove; 19. Threaded blind hole; 20. Arc-shaped groove two; 21. Spring; 22. Arc-shaped groove one; 23. Airbag one; 24. Groove; 25. Floor slab. Detailed Implementation

[0043] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0044] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0047] See Figure 1-9 A construction auxiliary mechanical device includes a positioning mechanism disposed above a floor slab 25 and a sealing mechanism disposed below the floor slab 25, wherein an operating part is provided between the positioning mechanism and the sealing mechanism.

[0048] The positioning mechanism includes a mounting plate, and several sets of telescopic mechanisms are provided on the lower surface of the mounting plate;

[0049] The sealing mechanism includes a sealing disc 1, the diameter of which is smaller than the diameter of the opening to be sealed;

[0050] The operating unit includes a connecting rod 3, one end of which is located at the center of the sealing disc 1, and the other end of which is located at the center of the mounting plate.

[0051] Both ends of the outer surface of the connecting rod 3 are provided with external threads. The center of the corresponding sealing plate 1 is provided with a threaded blind hole 19 that mates with the external threads along the axial direction. The center of the mounting plate is provided with a threaded through hole that mates with the external threads along the axial direction. The two ends of the connecting rod 3 are respectively screwed into the corresponding threaded blind hole 19 and threaded through hole.

[0052] The sealing mechanism also includes an annular groove 16 on the outer arc surface of the sealing disk 1. The lower side of the sealing disk 1 away from the positioning mechanism is provided with several circumferentially distributed sliding grooves 17. The sliding grooves 17 pass through the annular groove 16 and the outer end of the inner side of the sliding groove 17 away from the center of the sealing disk 1 passes through the sealing disk 1. A matching sliding plate 13 is slidably arranged in the sliding groove 17. A fan-shaped slider 8 is provided on the sliding plate 13. The fan-shaped slider 8 is slidably engaged with the annular groove 16. A round rod 12 is provided at one end of the sliding plate 13 near the center of the sealing disk 1.

[0053] A rotating shaft 5 is provided at the center of the lower side of the sealing disc 1. A disc 11 is provided around the rotating shaft 5. An arc-shaped groove 10 is provided on the disc 11 to cooperate with several round rods 12. The round rods 12 are placed in the corresponding arc-shaped grooves 10. When the disc 11 rotates, it drives several round rods 12 to slide in the arc-shaped grooves 10, which in turn drives several sliding plates 13 to slide along the grooves 17, which in turn drives several fan-shaped sliders 8 to slide radially along the sealing disc 1 in the annular groove 16. When several fan-shaped sliders 8 slide outward, the diameter or circular area of ​​the sealing disc 1 will increase.

[0054] In addition, the fan-shaped slider 8 can be completely hidden in the annular groove 16 after sliding towards the center of the sealing disc 1.

[0055] The connecting rod 3 is a circular tube with both its upper and lower ends open. A through circular hole, smaller in diameter than the inner diameter of the tube, is located at the center of the threaded blind hole 19. The rotating shaft 5 is rotatably mounted within this hole. Specifically, the rotating shaft 5 can be connected to the hole via a bearing. The upper end of the rotating shaft 5 extends upwards through the connecting rod 3 and is fitted with a handle 6. Rotating the handle 6 drives the rotating shaft 5 to rotate, which in turn drives the disc 11 to rotate, ultimately enabling the sliding of several sector-shaped sliders 8.

[0056] A through-hole for steel wire is provided on the outer side of the connecting rod 3, and the through-hole for steel wire is close to the upper external thread.

[0057] The handle 6 includes a crossbar, a rectangular bar is provided in the middle of the crossbar, and a rectangular groove 18 is provided on the upper end face of the corresponding pivot 5. The lower end of the rectangular bar is inserted into the rectangular groove 18.

[0058] An arc groove 22 is provided on the upper side of the fan-shaped slider 8 away from the slide plate 13. The arc groove 22 is close to the outer arc surface of the fan-shaped slider 8. An arc block 7 is slidably arranged in the arc groove 22. The inner arc surface of the arc block 7 cooperates with the outer arc surface of the sealing plate 1. That is, when the fan-shaped slider 8 slides to the limit position outward, the arc block 7 slides upward and just fits against the outer arc surface of the sealing plate 1.

[0059] Several springs 21 are provided between the inner bottom surface of the arc-shaped block 7 and the arc-shaped groove 22. One end of the spring 21 is fixed to the arc-shaped block 7, and the other end of the spring 21 is fixed to the inner bottom surface of the arc-shaped groove 22. When the arc-shaped block 7 is pressed down, the spring 21 is compressed and the arc-shaped block 7 can be completely stored in the arc-shaped groove 22.

[0060] A lead screw 15 is provided on the lower side of the arc-shaped block 7. A through hole is provided on the corresponding fan-shaped slider 8 and slide plate 13. After the lead screw 15 passes through the through hole, a handle is provided. A matching nut 14 is provided on the periphery of the lead screw 15 between the handle and the slide plate 13. When using this device, the nut 14 can be rotated downward. When the fan-shaped slider 8 slides outward, the arc-shaped block 7 will slide upward under the action of the spring 21. When it is necessary to store it, the arc-shaped block 7 can be compressed downward by pulling the handle and finally stored in the arc-shaped groove 22. Then, the nut 14 is rotated upward to limit and fix it. Finally, by rotating the handle 6, the fan-shaped slider 8 can be stored in the annular groove 16.

[0061] An arc-shaped groove 20 is provided on one end face of the arc-shaped block 7. An arc-shaped block 9 is slidably disposed within the arc-shaped groove 20. A groove 24 is provided on the upper side of the arc-shaped block 9 near the opening of the arc-shaped groove 20. An airbag 23 is disposed within the groove 24. An airbag 2 is disposed between the inner end face of the arc-shaped groove 20 and the arc-shaped block 9. Both the airbag 23 and the airbag 2 are provided with inflation hoses. The inflation hoses can be connected to the outside and connected to an external air source through the inner side of the connecting rod 3. When the fan-shaped slider 8 slides to its limit position outward, the arc-shaped block 7 is spring-loaded. Under the action of 21, it slides upward and fits against the outer arc surface of the sealing plate 1. Then, it inflates the second airbag, causing the second arc block 9 to slide out and abut against the side of the adjacent fan-shaped slider 8. The size of the groove and its position on the second arc block 9 are matched with the gap between the adjacent two fan-shaped sliders 8 in the extreme position. Then, it inflates the first airbag 23. The first airbag 23 expands and fills the gap between the adjacent two fan-shaped sliders 8. At the same time, the first airbag 23 expands upward and extends beyond the upper side of the sealing plate 1, so that it can be pressed against the lower side of the floor slab 25.

[0062] The mounting plate is a cross-shaped positioning plate 4, and the telescopic mechanism is an electric telescopic rod 2. There are four sets of electric telescopic rods 2, which are evenly distributed on the lower surface of the cross-shaped positioning plate 4. When in use, the four sets of electric telescopic rods 2 are distributed around the opening to be sealed.

[0063] The upper side of the arc-shaped block 7 is equipped with an elastic rubber pad, which can prevent concrete leakage after being compressed.

[0064] The usage method is as follows:

[0065] S1. First, apply concrete release agent to the outside of the connecting rod 3 and the sealing plate 1. Then, rotate the nut 14 downward to release the limit of the nut 14. Then, insert the sealing plate 1 of this equipment downward into the hole to be sealed and make the sealing plate 1 extend downward beyond the lower side of the floor slab 25. At this time, the lower side of the positioning mechanism is attached to the upper side of the floor slab 25 to support the entire equipment.

[0066] S2. Rotate handle 6, and the disc 11 rotates through the shaft 5, which in turn drives several round rods 12 to slide in the arc-shaped groove 10, which in turn drives several sliding plates 13 to slide along the groove 17, and finally causes several fan-shaped sliders 8 to slide out to their limit positions. Then, the arc-shaped block 7 slides upward under the action of spring 21 and fits against the outer arc surface of the sealing disc 1.

[0067] S3. Inflate the second airbag so that the second arc block 9 slides out and abuts against the side of the adjacent fan-shaped slider 8;

[0068] S4. Start the electric telescopic rod 2 until the upper side of several arc-shaped blocks 7 presses against the lower side of the floor slab 25 outside the opening.

[0069] S5. Inflate the airbag 23 so that the airbag 23 expands and fills the gap between the adjacent fan-shaped sliders 8 on both sides, while pressing it against the lower side of the floor slab 25.

[0070] S6. Use a flat shovel and a plastic bucket to pour cement slurry into the hole until the cement slurry overflows from the hole.

[0071] S7. After the cement slurry reaches the construction design requirements, remove the handle 6, then rotate the cross-shaped positioning plate 4 to disengage it from the rotating shaft 5. Then fix the steel wire rope in the steel wire hole, and then use a wooden mallet or other tools to knock the connecting rod 3 downwards until the connecting rod 3 and the sealing mechanism are disengaged from the floor slab 25. Finally, use the steel wire rope to lower the connecting rod 3 and the sealing mechanism to the ground below the floor slab 25. Finally, clean and store the equipment.

[0072] The technical features of this invention not described can be implemented by or using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this invention, and this invention is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention should also be within the protection scope of this invention.

Claims

1. A construction auxiliary machine, characterized by comprising: The positioning mechanism is arranged above the floor (25), and the blocking mechanism is arranged below the floor (25), and an operation part is arranged between the positioning mechanism and the blocking mechanism; The positioning mechanism comprises a mounting plate, and the lower surface of the mounting plate is provided with a plurality of sets of telescopic mechanisms; The blocking mechanism comprises a blocking disc (1); The operation part comprises a connecting rod (3), one end of the connecting rod (3) is arranged at the center of the blocking disc (1), and the other end of the connecting rod (3) is arranged at the center of the mounting plate; The outer surface of the connecting rod (3) is provided with external threads at both ends, and the center of the corresponding blocking disc (1) is provided with a threaded blind hole (19) matched with the external threads in the axial direction, and the center of the mounting plate is provided with a threaded through hole matched with the external threads in the axial direction, and the both ends of the connecting rod (3) are respectively screwed in the corresponding threaded blind hole (19) and the threaded through hole; The blocking mechanism further comprises an annular groove (16) arranged on the outer arc surface of the blocking disc (1), and the lower side of the blocking disc (1) away from the positioning mechanism is provided with a plurality of circumferentially distributed sliding grooves (17), the sliding grooves (17) penetrate the annular groove (16), and the outer side end of the sliding groove (17) away from the center of the blocking disc (1) penetrates the blocking disc (1), the sliding groove (17) is slidably provided with a matched sliding plate (13), the sliding plate (13) is provided with a sector-shaped sliding block (8), the sector-shaped sliding block (8) is in sliding cooperation with the annular groove (16), and the end of the sliding plate (13) close to the center of the blocking disc (1) is provided with a round rod (12); The lower side of the center of the blocking disc (1) is provided with a rotating shaft (5), the periphery of the rotating shaft (5) is provided with a disc (11), the disc (11) is provided with an arc-shaped sliding groove (10) matched with a plurality of round rods (12), and the round rod (12) is arranged in the corresponding arc-shaped sliding groove (10); The upper side of the sector-shaped sliding block (8) away from the sliding plate (13) is provided with an arc-shaped groove (22), the arc-shaped groove (22) is close to the outer arc surface of the sector-shaped sliding block (8), and the arc-shaped groove (22) is slidably provided with an arc-shaped block (7), and the inner arc surface of the arc-shaped block (7) is matched with the outer arc surface of the blocking disc (1); A plurality of springs (21) are arranged between the inner bottom surfaces of the arc-shaped block (7) and the arc-shaped groove (22), one end of the spring (21) is fixed on the arc-shaped block (7), and the other end of the spring (21) is fixed on the inner bottom surface of the arc-shaped groove (22); One side of the arc-shaped block (7) is provided with an arc-shaped groove (20), the arc-shaped groove (20) is slidably provided with an arc-shaped block (9), the upper side of the arc-shaped block (9) close to the opening of the arc-shaped groove (20) is provided with a groove (24), the groove (24) is provided with an air bag (23), and the inner end surface of the arc-shaped groove (20) and the arc-shaped block (9) are provided with an air bag (2).

2. The construction auxiliary mechanical equipment according to claim 1, characterized in that, The connecting rod (3) is a circular tube with both ends penetrating, a through hole is arranged at the center of the threaded blind hole (19), the diameter of the through hole is smaller than the inner diameter of the circular tube, the rotating shaft (5) is arranged in the through hole, and the upper end of the rotating shaft (5) extends upwards and is provided with a handle (6) after penetrating out of the connecting rod (3). A through steel wire hole is arranged on the outer side of the connecting rod (3), and the steel wire hole is close to the upper end of the external thread.

3. The construction auxiliary mechanical equipment according to claim 2, characterized in that, The handle (6) comprises a crossbar, a rectangular rod is arranged at the middle part of the crossbar, a corresponding rectangular groove (18) is arranged on the upper end face of the rotating shaft (5), and the lower end of the rectangular rod is inserted into the rectangular groove (18).

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