Liftable construction platform for high-speed rail concrete pile

Abstract

A liftable construction platform for a high-speed rail concrete pile relates to a construction platform structure, and is characterized in that two ends of a connecting frame A (4) are respectively connected with one end of an arc-shaped frame plate A (2) and one end of an arc-shaped frame plate B (6) in a sliding manner to form a half frame body, two connecting frames B (27) enable the two half frame bodies to be elongated and shortened, and four lifters (12) are positioned below the two connecting frames A (4) and the two connecting frames B (27); the lower ends of the four connecting rods (13) are inserted into the four oval blind holes (46); the four arc-shaped frame plates and the four connecting frames are combined into the oval telescopic platform with the perimeter capable of being changed to surround the high-speed rail concrete pile, and the lifters for controlling the telescopic platform to ascend and descend are arranged at the bottoms of the four connecting frames correspondingly; the purposes that the height of the telescopic platform is adjusted through the lifter, and the telescopic platform is supported by using the oval conical structure of the high-speed rail concrete pile as a supporting point are achieved.

Description

Technical Field

[0001] The invention relates to a construction platform structure, in particular to a liftable construction platform for high-speed railway concrete piles. Background Art

[0002] High-speed rail concrete piles are generally elliptical cone structures. When constructing auxiliary structures on the surface of cast high-speed rail concrete piles, a construction platform is generally required. Since the concrete surface is smooth and has no attachment points, it is impossible to build a construction platform directly on the surface of high-speed rail concrete piles. Traditional high-speed rail concrete pile surface construction platforms are generally hoisted by cranes or lifted by elevators for construction. Not only is the range of operation of a single construction platform small after positioning, and the construction platform needs to be moved continuously during construction, but an overly high and steep construction platform will cause safety hazards with low stability. The gap between the inclined high-speed rail concrete pile and the construction platform will also reduce the fit between the construction platform and the high-speed rail concrete pile. Although it is safe and reliable to build a large number of scaffolding for construction, the construction of the scaffolding consumes a lot of manpower and material resources, is bulky overall, and has low economic benefits. Based on the elliptical cone structure of the high-speed rail concrete pile, it is a more practical research and development direction to develop a construction platform that uses the slope of the elliptical cone surface as a support point. Summary of the invention

[0003] In order to overcome the shortcomings of the background technology, the present invention discloses a liftable construction platform for high-speed railway concrete piles, which embraces the high-speed railway concrete pile by combining four arc-shaped frame plates and four connecting frames into an elliptical telescopic platform with a variable circumference, and respectively arranging elevators at the bottom of the four connecting frames to control the lifting of the telescopic platform. The purpose of using the elevator to adjust the height of the telescopic platform and using the elliptical conical structure of the high-speed railway concrete pile as a supporting point to support the telescopic platform is achieved.

[0004] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme: A lifting and lowering construction platform for high-speed railway concrete piles, comprising a telescopic platform and a lift, wherein the telescopic platform comprises a half frame, wherein the half frame comprises an arc frame plate A, a connecting frame A and an arc frame plate B, wherein the two ends of the connecting frame A are respectively slidably connected to one end of the arc frame plate A and one end of the arc frame plate B, so that the arc frame plate A and the arc frame plate B can be extended and shortened, wherein the half frame comprises two, the two half frames are arranged opposite to each other, and the connecting frame B is slidably connected between the two ends of the two half frames, and the two connecting frames B enable the two half frames to be extended and shortened The two connecting frames A and B are short, and the sliding cooperation between the two connecting frames A and the two connecting frames B can make the two arc-shaped frame plates A and the two arc-shaped frame plates B form a telescopic platform of an elliptical structure that can change the circumference. The bottoms of the two connecting frames A and the two connecting frames B are hingedly connected with connecting rods extending downward. There are four elevators, and supports are provided on the tops of the four elevators. Elliptical blind holes are provided on the tops of the four supports. The four elevators are located below the two connecting frames A and the two connecting frames B, and the lower ends of the four connecting rods are inserted into the four elliptical blind holes.

[0005] The described liftable construction platform for high-speed railway concrete piles has a screw rod B at the center of one end of the arc frame plate A, square blind holes A are respectively provided on the end faces of one end of the arc frame plate A located on two opposite sides of the screw rod B, a screw rod C is provided at the center of one end of the arc frame plate B, square blind holes C are respectively provided on the end faces of one end of the arc frame plate B located on two opposite sides of the screw rod C, and the connecting frame A includes a connecting strip A, the connecting strip A is two and is arranged at intervals, two connecting blocks A are arranged at intervals in the middle between the two connecting strips A so that the position between the two connecting blocks A forms a square hole A, and a through hole A is provided in the middle of the two connecting blocks A. The through holes A are coaxially arranged, and an axis rod A is provided in the square hole A, both ends of which are rotatably connected to the two through holes A. A hexagonal sleeve A is sleeved on the outside of the axis rod A located in the square hole A, a blind screw hole A is provided at one end of the axis rod A, and a blind screw hole B is provided at the other end of the axis rod A. The thread directions of the blind screw hole A and the blind screw hole B are opposite, one end of the two connecting strips A is slidably connected to the two square blind holes A, the other end of the two connecting strips A is slidably connected to the square blind hole C, the screw rod C is screwed to the blind screw hole A, the screw rod B is screwed to the blind screw hole B, and the arc frame plate A, the connecting frame A and the arc frame plate B are connected to form a half frame body that can be extended and shortened.

[0006] The described liftable construction platform for high-speed railway concrete piles is provided with a screw A at the center of one end of the half frame, square blind holes B are respectively provided on the end faces of one end of the half frame located on the opposite sides of the screw A, a screw D is provided at the center of the other end of the half frame, and square blind holes D are respectively provided on the end faces of the other end of the half frame located on the opposite sides of the screw D. After the two half frames are relatively arranged, one end of the half frame corresponds to the other end of the other half frame, and the connecting frame B includes a connecting bar B, which is two and is arranged at intervals, and two connecting blocks B are arranged at intervals in the middle between the two connecting bars B so that a square hole B is formed in the area between the two connecting blocks B, and a through hole B is provided in the middle of the two connecting blocks B, and the two through holes B are coaxially arranged, and a shaft rod B is provided in the square hole B, both ends of which are rotatably connected to the two through holes B, and a hexagonal sleeve B is sleeved on the outside of the shaft rod B located in the square hole B, a blind screw hole C is provided at one end of the shaft rod B, and a blind The screw hole D, the blind screw hole C and the blind screw hole D have opposite thread directions, one end of the two connecting strips B provided on the first connecting frame B are slidably connected to the two blind holes B provided on the first half frame, the other end of the two connecting strips B provided on the first connecting frame B is slidably connected to the two blind holes D provided on the second half frame, the blind screw hole C provided on the first connecting frame B is screwed to the screw A provided on the first half frame, the blind screw hole D provided on the first connecting frame B is screwed to the screw D provided on the second half frame, one end of the two connecting strips B provided on the second connecting frame B is slidably connected to the two blind holes B provided on the second half frame, the other end of the two connecting strips B provided on the second connecting frame B is slidably connected to the two blind holes D provided on the first half frame, the blind screw hole C provided on the second connecting frame B is screwed to the screw A provided on the second half frame, the blind screw hole D provided on the second connecting frame B is screwed to the screw D provided on the first half frame, and a telescopic platform capable of changing the circumference is formed after the two half frames are connected.

[0007] The described liftable construction platform for high-speed railway concrete piles is provided with an arc-shaped guardrail A at the outer edge of the top of the arc-shaped frame plate A, an arc-shaped guardrail B is provided at the outer edge of the top of the arc-shaped frame plate B, a straight guardrail A is provided near the outer edge of the top of the connecting frame A, an opening B is provided at the top of a square blind hole A provided on the outer side of one end of the arc-shaped frame plate A, an opening C is provided at the top of a square blind hole C provided on the outer side of one end of the arc-shaped frame plate B, the lower part of one end of the straight guardrail A can slide in the opening B, and the lower part of the other end of the straight guardrail A can slide in the opening C; a straight guardrail B is provided near the outer edge of the top of the connecting frame B, an opening A is provided at the top of a square blind hole B provided on the outer side of the other end of the arc-shaped frame plate A, an opening D is provided at the top of a square blind hole D provided on the outer side of the other end of the arc-shaped frame plate B, the lower part of one end of the straight guardrail B can slide in the opening A, and the lower part of the other end of the straight guardrail B can slide in the opening D.

[0008] The described liftable construction platform for high-speed railway concrete piles has an inner arc wall of an arc frame plate A provided with an inclined surface A with a lower end retracted, and an inner arc wall of an arc frame plate B provided with an inclined surface B with a lower end retracted.

[0009] For the liftable construction platform for high - speed rail concrete piles, an extension rod is provided between the connecting rod and the support. A connecting pipe is provided at the top of the extension rod, and a jack is provided at the top of the connecting pipe. The lower end of the connecting rod is inserted into the jack, and the lower end of the extension rod is inserted into the oval blind hole.

[0010] For the liftable construction platform for high - speed rail concrete piles, a fastening bolt is provided on the side wall of the connecting pipe, and the end of the bolt extends into the jack along the screw hole provided on the side wall of the connecting pipe.

[0011] For the liftable construction platform for high - speed rail concrete piles, the elevator is a hydraulic elevator.

[0012] For the liftable construction platform for high - speed rail concrete piles, "冂"-shaped brackets are provided at the bottoms of the two connecting frames A and the two connecting frames B. Through holes are provided on both side walls of the "冂"-shaped brackets. A shaft hole is provided horizontally at the top of the connecting rod. Both ends of the pin shaft are fixed in the two through holes, and the middle part is rotatably connected to the shaft hole, so that the upper end of the connecting rod is hinged to the "冂"-shaped bracket.

[0013] Due to the adoption of the above - mentioned technical solution, the present invention has the following beneficial effects: The liftable construction platform for high - speed rail concrete piles of the present invention combines four arc - shaped plates and four connecting frames into an oval telescopic platform that can change the perimeter to surround the high - speed rail concrete pile. Elevators for controlling the lifting of the telescopic platform are respectively provided at the bottoms of the four connecting frames. The operator turns the hexagonal sleeves A and B, so that the inner edge of the telescopic platform closely fits the elliptical - conical high - speed rail concrete pile, achieving the purpose of using the elevator to adjust the height of the telescopic platform and using the elliptical - conical structure of the high - speed rail concrete pile as a support point to support the telescopic platform. The present invention is scientifically designed, highly practical, and realizes the high - altitude fixation of the construction platform by using the unique structure of the elliptical - conical high - speed rail concrete pile, saving a large amount of manpower and material resources required for setting up traditional construction platforms, and has the value of research and development and popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the present invention; Figure 2 It is a schematic structural diagram of the telescopic platform of the present invention; Figure 3 It is a schematic structural diagram of the arc - shaped plate A of the present invention; Figure 4 It is a schematic structural diagram of the arc - shaped plate B of the present invention; Figure 5 It is a schematic structural diagram of the cooperation between the connecting block A and the connecting strip A of the present invention; Figure 6 It is a schematic structural diagram of the shaft rod A of the present invention; Figure 7 It is a schematic structural diagram of the shaft rod A of the present invention from another perspective; Figure 8 It is a schematic structural diagram of the cooperation between the connecting block B and the connecting bar B of the present invention; Fig. 9 It is a schematic structural diagram of the shaft rod B of the present invention; Fig.10 It is a schematic structural diagram of the shaft rod B of the present invention from another perspective; Fig.11 It is a schematic structural diagram of the support of the present invention; Fig.12 It is a schematic structural diagram of the extension rod of the present invention; Fig.13 It is a schematic structural diagram of the telescopic platform after contraction of the present invention; Fig.14 is Figure 1 a partial enlarged sectional view of the structure at A in

[0015] In the figure: 1, arc guardrail A; 2, arc frame plate A; 3, telescopic platform; 4, connecting frame A; 5, straight guardrail A; 6, arc frame plate B; 7, arc guardrail B; 8, support; 9, extension rod; 10, connecting pipe; 11, fastening bolt; 12, elevator; 13, connecting rod; 14, opening A; 15, screw rod A; 16, opening B; 17, screw rod B; 18, hexagonal sleeve A; 19, screw rod C; 20, opening C; 21, screw rod D; 22, opening D; 23, hexagonal sleeve B; 24, connecting block A; 25, square hole A; 26, connecting bar A; 27, connecting frame B; 28, connecting bar B; 29, square hole B; 30, connecting block B; 31, straight guardrail B; 32, square blind hole A; 33, square blind hole B; 34, inclined surface A; 35, square blind hole C; 36, inclined surface B; 37, square blind hole D; 38, perforation A; 39, shaft rod A; 40, blind screw hole A; 41, blind screw hole B; 42, perforation B; 43, shaft rod B; 44, blind screw hole C; 45, blind screw hole D; 46, oval blind hole; 47, jack; 48, "冂"-shaped bracket; 49, shaft hole; 50, pin shaft; 51, through hole; 52, screw hole. Detailed implementation manners

[0016] The present invention can be more detailedly explained through the following embodiments. The present invention is not limited to the following embodiments. The purpose of disclosing the present invention is to protect all changes and improvements within the scope of the present invention; Combined with the attached Figures 1 to 14The liftable construction platform for high-speed railway concrete piles comprises a telescopic platform 3 and a lift 12. The telescopic platform 3 comprises a half frame, and the half frame comprises an arc frame plate A2, a connecting frame A4 and an arc frame plate B6. An inclined surface A34 with a lower end retracted is provided on the inner arc wall of the arc frame plate A2, and an inclined surface B36 with a lower end retracted is provided on the inner arc wall of the arc frame plate B6. The two ends of the connecting frame A4 are respectively slidably connected to one end of the arc frame plate A2 and the arc frame plate B6, so that the arc frame plate A2 and the arc frame plate B6 can be extended and shortened. The half frame is divided into two, and the two half frames are arranged opposite to each other. A connecting frame B27 is slidably connected between the two ends of each of the two half frames. The two connecting frames B27 enable the two half frames to be extended and shortened. The two connecting frames A4 and the two connecting frames The sliding fit of B27 enables the two arc-shaped frame plates A2 and the two arc-shaped frame plates B6 to form a telescopic platform 3 with an elliptical structure capable of changing the circumference. A screw rod B17 is provided at the center of one end of the arc-shaped frame plate A2. Square blind holes A32 are provided at the end surfaces of one end of the arc-shaped frame plate A2 located on two opposite sides of the screw rod B17. A screw rod C19 is provided at the center of one end of the arc-shaped frame plate B6. Square blind holes C35 are provided at the end surfaces of one end of the arc-shaped frame plate B6 located on two opposite sides of the screw rod C19. The connecting frame A4 includes a connecting strip A26. There are two connecting strips A26 and they are arranged at intervals. Two connecting blocks A24 are provided at intervals in the middle between the two connecting strips A26 so that a square hole A25 is formed at the position between the two connecting blocks A24. In the middle of the two connecting blocks A24, a square hole A25 is provided. A through hole A38 is provided, and the two through holes A38 are coaxially arranged. A shaft rod A39 is provided in the square hole A25, and both ends are rotatably connected to the two through holes A38. A hexagonal sleeve A18 is sleeved on the outside of the shaft rod A39 located in the square hole A25. A blind screw hole A40 is provided at one end of the shaft rod A39, and a blind screw hole B41 is provided at the other end of the shaft rod A39. The thread directions of the blind screw hole A40 and the blind screw hole B41 are opposite. One end of the two connecting strips A26 is slidably connected to the two square blind holes A32, and the other end of the two connecting strips A26 is slidably connected to the square blind hole C35. The screw rod C19 is screwed to the blind screw hole A40, and the screw B17 is screwed to the blind screw hole B41. The arc frame plate A2, the connecting frame A4 and the arc frame plate B6 are connected to form a space that can be extended and shortened. A half frame body, a screw rod A15 is provided at the center of one end of the half frame body, square blind holes B33 are respectively provided on the end faces of one end of the half frame body located on opposite sides of the screw rod A15, a screw rod D21 is provided at the center of the other end of the half frame body, and square blind holes D37 are respectively provided on the end faces of the other end of the half frame body located on opposite sides of the screw rod D21. After the two half frames are arranged relatively, one end of one half frame body corresponds to the other end of the other half frame body. The connecting frame B27 includes a connecting bar B28, which is two and is arranged at intervals. Two connecting blocks B30 are arranged at intervals in the middle between the two connecting bars B28 so that a square hole B29 is formed in the position between the two connecting blocks B30. A through hole B42 is provided in the middle of the two connecting blocks B30, and the two through holes B42 are coaxially arranged.A shaft rod B43 with both ends rotatably connected to two perforations B42 is provided inside the square hole B29. A hexagonal sleeve B23 is sleeved outside the shaft rod B43 located inside the square hole B29. A blind screw hole C44 is provided at one end of the shaft rod B43, and a blind screw hole D45 is provided at the other end of the shaft rod B43. The thread directions of the blind screw hole C44 and the blind screw hole D45 are opposite. One ends of the two connecting bars B28 provided on the first connecting frame B27 are slidably connected to two square blind holes B33 provided on the first half frame body, and the other ends of the two connecting bars B28 provided on the first connecting frame B27 are slidably connected to two square blind holes D37 provided on the second half frame body. The blind screw hole C44 provided on the first connecting frame B27 is screwed to the screw rod A15 provided on the first half frame body, and the blind screw hole D45 provided on the first connecting frame B27 is screwed to the screw rod D21 provided on the second half frame body. One ends of the two connecting bars B28 provided on the second connecting frame B27 are slidably connected to two square blind holes B33 provided on the second half frame body, and the other ends of the two connecting bars B28 provided on the second connecting frame B27 are slidably connected to two square blind holes D37 provided on the first half frame body. The blind screw hole C44 provided on the second connecting frame B27 is screwed to the screw rod A15 provided on the second half frame body, and the blind screw hole D45 provided on the second connecting frame B27 is screwed to the screw rod D21 provided on the first half frame body. After the two half frame bodies are connected, a telescopic platform 3 capable of changing the perimeter is formed. An arc-shaped guardrail A1 is provided at the outer edge of the top of the arc-shaped frame plate A2, and an arc-shaped guardrail B7 is provided at the outer edge of the top of the arc-shaped frame plate B6. A straight guardrail A5 is provided near the outer edge at the top of the connecting frame A4. An opening B16 is provided at the top of the square blind hole A32 provided on the outside of one end of the arc-shaped frame plate A2, and an opening C20 is provided at the top of the square blind hole C35 provided on the outside of one end of the arc-shaped frame plate B6. The lower part of one end of the straight guardrail A5 can slide in the opening B16, and the lower part of the other end of the straight guardrail A5 can slide in the opening C20; a straight guardrail B31 is provided near the outer edge at the top of the connecting frame B27. An opening A14 is provided at the top of the square blind hole B33 provided on the outside of the other end of the arc-shaped frame plate A2, and an opening D22 is provided at the top of the square blind hole D37 provided on the outside of the other end of the arc-shaped frame plate B6. The lower part of one end of the straight guardrail B31 can slide in the opening A14, and the lower part of the other end of the straight guardrail B31 can slide in the opening D22. Connecting rods 13 extending downward are hinged at the bottoms of the two connecting frames A4 and the two connecting frames B27. "冂"-shaped brackets 48 are provided at the bottoms of the two connecting frames A4 and the two connecting frames B27. Through holes 51 are provided on both side walls of the "冂"-shaped brackets 48. A shaft hole 49 is transversely provided at the top of the connecting rod 13. Both ends of a pin shaft 50 are fixed in the two through holes 51, and the middle part is rotatably connected to the shaft hole 49 so that the upper end of the connecting rod 13 is hinged to the "冂"-shaped bracket 48. There are four elevators 12. Supports 8 are provided at the tops of the four elevators 12. Oval blind holes 46 are provided at the tops of the four supports 8. The four elevators 12 are all located below the two connecting frames A4 and the two connecting frames B27.The lower ends of the four connecting rods 13 are inserted into the four oval blind holes 46. An extension rod 9 is provided between the connecting rod 13 and the support 8. A connecting pipe 10 is provided at the top of the extension rod 9. A plug hole 47 is provided at the top of the connecting pipe 10. The lower ends of the connecting rods 13 are inserted into the plug hole 47. The lower ends of the extension rods 9 are inserted into the oval blind holes 46. A fastening bolt 11 is provided on the side wall of the connecting pipe 10. The end of the screw hole 52 provided along the side wall of the connecting pipe 10 extends into the plug hole 47. The lift 12 is a hydraulic lift.

[0017] The escalable construction platform for high-speed railway concrete piles described in the present invention is implemented. Now, the telescopic platform 3 is assembled on the ground, one end of the two connecting strips A26 is slidably connected to the two square blind holes A32, the other end of the two connecting strips A26 is slidably connected to the square blind hole C35, the screw C19 is screwed to the blind screw hole A40, the screw B17 is screwed to the blind screw hole B41, and the arc frame plate A2, the connecting frame A4 and the arc frame plate B6 are connected to form a half frame body that can be extended and shortened, one end of the two connecting strips B28 provided on the first connecting frame B27 is slidably connected to the two square blind holes B33 provided on the first half frame body, the other end of the two connecting strips B28 provided on the first connecting frame B27 is slidably connected to the two square blind holes D37 provided on the second half frame body, and the first connecting frame A28 is connected to the two square blind holes D37 provided on the second half frame body. The blind screw hole C44 provided on the frame B27 is screwed to the screw rod A15 provided on the first half frame, the blind screw hole D45 provided on the first connecting frame B27 is screwed to the screw rod D21 provided on the second half frame, one end of the two connecting strips B28 provided on the second connecting frame B27 is slidably connected to the two blind holes B33 provided on the second half frame, the other end of the two connecting strips B28 provided on the second connecting frame B27 is slidably connected to the two blind holes D37 provided on the first half frame, the blind screw hole C44 provided on the second connecting frame B27 is screwed to the screw rod A15 provided on the second half frame, the blind screw hole D45 provided on the second connecting frame B27 is screwed to the screw rod D21 provided on the first half frame, and the two half frames are connected to form a telescopic platform 3 capable of changing the circumference; During construction, the circumference of the telescopic platform 3 is maximized, and four elevators 12 are set at the prepared positions on the base surface around the high-speed railway concrete pile. After the telescopic platform 3 with the cable installed is lifted by the crane, it is sleeved on the outside of the high-speed railway concrete pile along the top of the high-speed railway concrete pile and suspended in the air, and the four elevators 12 are moved to the bottom of the two connecting frames A4 and the two connecting frames B27, so that the lower ends of the four connecting rods 13 are all inserted into the four elliptical blind holes 46 (the lateral positions of the four elevators 12 will not change during the lifting and lowering of the telescopic platform 3, the height positions of the top plates of the four elevators 12 will change, and the inclinations of the four connecting rods 13 will change with the change of the circumference of the telescopic platform 3. The two connecting frames A4 and the two connecting frames B27 are respectively hingedly connected to the upper ends of the four connecting rods 13, and the lower ends of the four connecting rods 13 can swing in the four elliptical blind holes 46. This overcomes the problem that the circumference of the telescopic platform 3 changes during the lifting and lowering process, resulting in the upper ends of the four connecting rods 13 being unable to be on the same vertical line during the rising or falling process). The disadvantage of moving), remove the cable of the telescopic platform 3 and move the crane away, adjust the height of the top plate of the four elevators 12 to the required height at the same time, send two operators to the top of the telescopic platform 3, and both operators use wrenches to rotate the two hexagonal sleeves A18 or the two hexagonal sleeves B23 at the same time to make the inner edges of the two arc-shaped frame plates A2 and the two arc-shaped frame plates B6 fit tightly with the outer wall of the high-speed railway concrete pile (the setting of the opposite thread directions of the blind screw hole A40 and the blind screw hole B41 can be achieved by rotating the two hexagonal sleeves A18 or the two hexagonal sleeves B23 at the same time). When the hexagonal sleeve A18 rotates, the arc frame plate A2 and the arc frame plate B6 separate and merge faster, and the blind screw hole C44 and the blind screw hole D45 have opposite thread directions, which can make the two half frames separate and merge faster when the two hexagonal sleeves B23 are rotated). The inclined surface A34 and the inclined surface B36 are set to make the inner edges of the two arc frame plates A2 and the two arc frame plates B6 fit the outer wall of the high-speed railway concrete pile more closely, and the outer wall of the high-speed railway concrete pile can be constructed on the top of the telescopic platform 3. When it is necessary to move the telescopic platform 3 upward, the two operators pull the two hexagonal sleeves A18 and the two hexagonal sleeves B23 so that the inner edges of the two arc-shaped frame plates A2 and the two arc-shaped frame plates B6 are no longer tightly fitted to the outer wall of the high-speed railway concrete pile. In order to ensure stability, the four elevators 12 rise at the same time to raise the telescopic platform 3 a small distance. The two operators promptly use wrenches to simultaneously pull the two hexagonal sleeves A18 or the two hexagonal sleeves B23 to reduce the circumference of the telescopic platform 3 so that the inner edges of the two arc-shaped frame plates A2 and the two arc-shaped frame plates B6 are all in close contact with the outer wall of the high-speed railway concrete pile. After several lifts, until the telescopic platform 3 reaches the required height, the inner edges of the two arc-shaped frame plates A2 and the two arc-shaped frame plates B6 are all in close contact with the outer wall of the high-speed railway concrete pile. At this time, the outer wall of the high-speed railway concrete pile can be constructed on the top of the telescopic platform 3; When it is necessary to construct the outer wall of the high-speed railway concrete pile at a higher height, an extension rod 9 is added between the bottom of the connecting rod 13 and the support 8; When the height of the telescopic platform 3 needs to be lowered, the above-mentioned ascending steps can be reversed; The elliptical cone structure of the high-speed railway concrete pile, which is small at the top and large at the bottom, allows the telescopic platform 3 to be stably hung on the outer wall of the high-speed railway concrete pile when the inner edges of the two arc-shaped frame plates A2 and the two arc-shaped frame plates B6 are tightly fitted with the outer wall of the high-speed railway concrete pile.

[0018] Parts of the present invention not described in detail are prior art.

Claims

1. A liftable construction platform for high-speed railway concrete piles, characterized by: The telescopic platform (3) comprises a telescopic platform (3) and a lift (12). The telescopic platform (3) comprises a half frame, the half frame comprises an arc frame plate A (2), a connecting frame A (4) and an arc frame plate B (6), the two ends of the connecting frame A (4) are respectively slidably connected to one end of the arc frame plate A (2) and one end of the arc frame plate B (6), so that the arc frame plate A (2) and the arc frame plate B (6) can be extended and shortened. The half frame is divided into two halves, and the two halves are arranged opposite to each other. A connecting frame B (27) is slidably connected between the two ends of the two halves. The two connecting frames B (27) enable the two halves to be extended and shortened. The two connecting frames A (4) and the two connecting frames B (27) The sliding fit enables the two arc-shaped frame plates A (2) and the two arc-shaped frame plates B (6) to form a telescopic platform (3) with an elliptical structure capable of changing the circumference. The bottoms of the two connecting frames A (4) and the two connecting frames B (27) are hingedly connected with connecting rods (13) extending downward. There are four elevators (12). Supports (8) are provided at the tops of the four elevators (12). Elliptical blind holes (46) are provided at the tops of the four supports (8). The four elevators (12) are located below the two connecting frames A (4) and the two connecting frames B (27). The lower ends of the four connecting rods (13) are inserted into the four elliptical blind holes (46).

2. The liftable construction platform for high-speed railway concrete piles according to claim 1 is characterized in that: A screw rod B (17) is provided at the center of one end of the arc frame plate A (2), and square blind holes A (32) are respectively provided at the end surfaces of one end of the arc frame plate A (2) located on opposite sides of the screw rod B (17). A screw rod C (19) is provided at the center of one end of the arc frame plate B (6), and square blind holes C (35) are respectively provided at the end surfaces of one end of the arc frame plate B (6) located on opposite sides of the screw rod C (19). The connecting frame A (4) includes a connecting bar A (26), two connecting bars A (26) are arranged at intervals, two connecting blocks A (24) are arranged at intervals in the middle between the two connecting bars A (26) so that the area between the two connecting blocks A (24) forms a square hole A (25), and a through hole A (38) is provided in the middle of the two connecting blocks A (24), and the two through holes A (38) are coaxially arranged. A shaft rod A (39) is provided inside, both ends of which are rotatably connected to the two through holes A (38). A hexagonal sleeve A (18) is sleeved on the outside of the shaft rod A (39) located in the square hole A (25). A blind screw hole A (40) is provided at one end of the shaft rod A (39), and a blind screw hole B (41) is provided at the other end of the shaft rod A (39). The screw threads of the blind screw hole A (40) and the blind screw hole B (41) are in opposite directions. One end of the two connecting strips A (26) is slidably connected to the two square blind holes A (32), and the other ends of the two connecting strips A (26) are slidably connected to the square blind holes C (35). The screw rod C (19) is screwed to the blind screw hole A (40), and the screw rod B (17) is screwed to the blind screw hole B (41). The arc frame plate A (2), the connecting frame A (4) and the arc frame plate B (6) are connected to form a half frame body that can be extended and shortened.

3. The liftable construction platform for high-speed railway concrete piles according to claim 2 is characterized in that: A screw rod A (15) is provided at the center of one end of the half frame, and square blind holes B (33) are provided at the end surfaces of one end of the half frame located on opposite sides of the screw rod A (15). A screw rod D (21) is provided at the center of the other end of the half frame, and square blind holes D (37) are provided at the end surfaces of the other end of the half frame located on opposite sides of the screw rod D (21). After the two half frames are arranged opposite to each other, one end of one half frame corresponds to the other end of the other half frame. The connecting frame B (27) includes connecting bars B (28). The connecting bars B (28) are two and are arranged at intervals. In the middle between the two connecting bars B (28), a connecting bar B (28) is provided. Two connecting blocks B (30) are arranged at intervals so that a square hole B (29) is formed between the two connecting blocks B (30). A through hole B (42) is provided in the middle of the two connecting blocks B (30). The two through holes B (42) are coaxially arranged. A shaft rod B (43) is provided in the square hole B (29) with both ends rotatably connected to the two through holes B (42). A hexagonal sleeve B (23) is sleeved on the outside of the shaft rod B (43) located in the square hole B (29). A blind screw hole C (44) is provided at one end of the shaft rod B (43), and a blind screw hole D (45) is provided at the other end of the shaft rod B (43). The blind screw hole C (44) is provided at the bottom of the shaft rod B (43). ) and the blind screw hole D (45) have opposite thread directions, one end of the two connecting bars B (28) provided on the first connecting frame B (27) is slidably connected to the two blind holes B (33) provided on the first half frame, the other end of the two connecting bars B (28) provided on the first connecting frame B (27) is slidably connected to the two blind holes D (37) provided on the second half frame, the blind screw hole C (44) provided on the first connecting frame B (27) is screwed to the screw rod A (15) provided on the first half frame, the blind screw hole D (45) provided on the first connecting frame B (27) is screwed to the screw rod D (21) provided on the second half frame, and the second connecting frame One end of two connecting bars B (28) provided on the connecting frame B (27) is slidably connected to two blind holes B (33) provided on the second half frame, the other end of the two connecting bars B (28) provided on the second connecting frame B (27) is slidably connected to two blind holes D (37) provided on the first half frame, a blind screw hole C (44) provided on the second connecting frame B (27) is screwed to a screw rod A (15) provided on the second half frame, and a blind screw hole D (45) provided on the second connecting frame B (27) is screwed to a screw rod D (21) provided on the first half frame, and the two half frames are connected to form a telescopic platform (3) capable of changing the circumference.

4. The liftable construction platform for high-speed railway concrete piles according to claim 3 is characterized in that: At the outer edge of the top of the arc-shaped frame plate A (2), there is an arc-shaped guardrail A (1). At the outer edge of the top of the arc-shaped frame plate B (6), there is an arc-shaped guardrail B (7). At the position near the outer edge of the top of the connecting frame A (4), there is a straight guardrail A (5). At the top of the square blind hole A (32) provided on the outer side of one end of the arc-shaped frame plate A (2), there is an opening B (16). At the top of the square blind hole C (35) provided on the outer side of one end of the arc-shaped frame plate B (6), there is an opening C (20). The lower part of one end of the straight guardrail A (5) can slide within the opening B (16), and the lower part of the other end of the straight guardrail A (5) can slide within the opening C (20). At the position near the outer edge of the top of the connecting frame B (27), there is a straight guardrail B (31). At the top of the square blind hole B (33) provided on the outer side of the other end of the arc-shaped frame plate A (2), there is an opening A (14). At the top of the square blind hole D (37) provided on the outer side of the other end of the arc-shaped frame plate B (6), there is an opening D (22). The lower part of one end of the straight guardrail B (31) can slide within the opening A (14), and the lower part of the other end of the straight guardrail B (31) can slide within the opening D (22).

5. The liftable construction platform for high-speed railway concrete piles according to claim 1 is characterized by: On the inner arc wall of the arc-shaped frame plate A (2), there is an inclined surface A (34) with a retracted lower end. On the inner arc wall of the arc-shaped frame plate B (6), there is an inclined surface B (36) with a retracted lower end.

6. The liftable construction platform for high-speed railway concrete piles according to claim 1 is characterized by: Between the connecting rod (13) and the support (8), there is an extension rod (9). At the top of the extension rod (9), there is a connecting pipe (10). At the top of the connecting pipe (10), there is a jack (47). The lower end of the connecting rod (13) is inserted into the jack (47), and the lower end of the extension rod (9) is inserted into the oval blind hole (46).

7. The liftable construction platform for high-speed railway concrete piles according to claim 6 is characterized by: On the side wall of the connecting pipe (10), there is a fastening bolt (11) whose end extends into the jack (47) along the screw hole (52) provided on the side wall of the connecting pipe (10).

8. The liftable construction platform for high-speed railway concrete piles according to claim 1 is characterized by: The elevator (12) is a hydraulic elevator.

9. The escalable construction platform for high-speed railway concrete piles according to claim 1 is characterized in that: At the bottom of both connecting frames A (4) and both connecting frames B (27), there are "冂”-shaped brackets (48). On both side walls of the "冂”-shaped brackets (48), there are through holes (51). Horizontally on the top of the connecting rod (13), there is a shaft hole (49). The two ends of the pin shaft (50) are fixed within the two through holes (51), and the middle part is rotatably connected to the shaft hole (49) so that the upper end of the connecting rod (13) is hinged to the "冂”-shaped bracket (48).

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