Construction hoisting platform in subway tunnel

Abstract

The utility model discloses a construction hoisting platform in a subway tunnel, and relates to the technical field of subway tunnel construction, the construction hoisting platform comprises a workbench, a hoisting mechanism and a lifting platform, the workbench is installed at the top end of the lifting platform, the workbench comprises a rectangular bottom plate, the two ends of the bottom plate in the length direction can stretch outwards, and the hoisting mechanism is installed on the lifting platform. The lifting mechanism is installed in the center of the bottom plate and comprises a rectangular base and a lifting arm, a sliding groove is formed in the upper surface of the bottom plate, the base is connected into the sliding groove in a sliding mode, a base is rotationally connected to the base, one end of the lifting arm is installed on the base, the other end of the lifting arm extends out of the workbench, and a lifting hook is connected to the lifting arm. The method has the effect of covering the construction area more comprehensively.

Description

Technical Field

[0001] This application relates to the technical field of subway tunnel construction, and in particular to a construction hoisting platform in a subway tunnel. Background Art

[0002] The subway is closely related to daily traffic life. When building a subway, it is necessary to first dig through the tunnel before proceeding with the subsequent construction. During tunnel construction, a construction hoisting platform is required for the construction area at a high altitude.

[0003] The construction inside the tunnel is not fixed in the same area for a long time, and it is often necessary to change to different construction areas for construction. However, due to the narrow area inside the subway tunnel, and some construction areas are relatively small or high in position, the existing construction hoisting platforms are not convenient to enter the construction area and cannot fully cover every area that needs construction. Therefore, this application proposes a new technical solution. Utility Model Content

[0004] In order to expand the construction area, this application provides a construction hoisting platform in a subway tunnel.

[0005] This application provides a construction hoisting platform in a subway tunnel, adopting the following technical solution:

[0006] A construction hoisting platform in a subway tunnel includes a workbench, a hoisting mechanism, and a lifting platform. The workbench is installed at the top of the lifting platform. The workbench includes a rectangular bottom plate, and both ends of the bottom plate in the length direction can extend outwards. The hoisting mechanism is installed at the center of the bottom plate. The hoisting mechanism includes a rectangular base and a boom. A chute is opened on the upper surface of the bottom plate, and the base is slidably connected in the chute. A base is rotatably connected to the base, one end of the boom is installed on the base, and the other end extends out of the workbench. A hook is connected to the boom.

[0007] Optionally, the bottom plate includes a central plate fixedly connected to the top of the lifting platform and movable plates respectively connected to both ends of the central plate in the length direction. An activity groove is opened at the bottom of the central plate along the length direction, and the movable plates are slidably connected in the activity groove. A cylinder is fixed at the top of the lifting platform. There are two cylinders and their telescopic ends face away from each other, and the telescopic ends of the two cylinders are respectively fixed to the two movable plates. A limiting rod is arranged at the bottom of the central plate along its length direction, and the limiting rod passes through the two movable plates.

[0008] Optionally, railings are vertically fixed on the central plate and the movable plates. The railings are arranged at both ends of the central plate in the width direction and at the ends of the movable plates facing away from the central plate. At both ends of the railing located on the movable plate, a protective plate is rotatably connected. The protective plate is a telescopic structure and telescopic along the sliding direction of the movable plate.

[0009] Optionally, it also includes a supporting mechanism, a groove is provided at the bottom of the movable plate, the supporting mechanism includes a fixing rod, the fixing rod is rotatably connected to the side wall of the top table plate of the lifting platform, a positioning shaft for passing through and locking the fixing rod is pinned in the groove, a toggle rod is extended outward from the positioning shaft, the fixing rod is hollow and has an open end, an inner rod is slidably passed through the inner cavity of the fixing rod, and the inner rod is telescopically and slidably arranged along the length direction of the fixing rod, a limiting piece is provided between the fixing rod and the inner rod, the inner rod is inserted into the groove and locked, and a plurality of grooves are provided along the sliding direction of the movable plate.

[0010] Optionally, one end of the inner rod facing away from the fixed rod is rotatably connected to a vertical rod, and the toggle rod is connected to a pull rope.

[0011] Optionally, the boom includes a first connecting rod and a second connecting rod, the first connecting rod is rotatably connected to the second connecting rod, the end of the first connecting rod facing away from the second connecting rod is installed on a base, a winch is installed on the base, a fixed pulley is installed on the second connecting rod, and a connecting block for a steel wire rope of the winch to pass through is provided at the end of the second connecting rod facing away from the workbench, the steel wire rope of the winch passes through the fixed pulley and passes through the connecting block and is connected to the hook, the base is rotatably connected to a first hydraulic cylinder, and the telescopic end of the first hydraulic cylinder is rotatably connected to the second connecting rod.

[0012] Optionally, a second hydraulic cylinder is disposed in the second connecting rod, and a telescopic end of the second hydraulic cylinder extends out of the end of the second connecting rod and is fixedly connected to the connecting block.

[0013] In summary, the present application includes the following beneficial technical effects: the positions available for lifting can be expanded by rotating the base and changing the angle of the lifting section on the boom; the two ends of the workbench bottom plate can be extended and retracted, and the workers' activity area on the workbench can be changed, so that the workers can access more construction areas when they are on the workbench; by lifting the lifting platform, even the areas that need construction at high places can be accessed, expanding the construction area covered by the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of this application;

[0015] Figure 2 is a schematic diagram of the bottom structure of the bottom plate of the present application;

[0016] Figure 3 It is a structural schematic diagram of the support mechanism of this application.

[0017] Description of reference numerals: 1, lifting platform; 2, workbench; 3, support mechanism; 4, hoisting mechanism; 12, cylinder; 21, bottom plate; 22, railing; 23, protective plate; 211, central plate; 212, movable plate; 213, limiting rod; 31, fixed rod; 32, groove; 33, positioning shaft; 34, toggle rod; 35, vertical rod; 36, inner rod; 41, boom; 42, base; 421, pedestal; 411, first connecting rod; 412, second connecting rod; 43, first hydraulic cylinder; 44, hook; 45, second hydraulic cylinder; 46, connecting block; 47, fixed pulley; 48, winch. Detailed implementation manners

[0018] The following further elaborates on this application in conjunction with the attached Figures 1-3 drawings for a more detailed description.

[0019] An embodiment of this application discloses a construction hoisting platform inside a subway tunnel.

[0020] Referring to Figure 1 , the construction hoisting platform inside a subway tunnel includes a workbench 2, a lifting platform 1, a support mechanism 3, and a hoisting mechanism 4. The lifting platform 1 can adopt a scissor cross elevator. The workbench 2 is installed at the top of the lifting platform 1. The workbench 2 includes a rectangular bottom plate 21 and railings 22 perpendicular to the edges of the bottom plate 21. The bottom plate 21 includes a central plate 211 fixed to the top of the lifting platform 1 and two movable plates 212. A movable groove for the movable plates 212 to slide is provided along the length direction at the bottom of the central plate 211, so that the two movable plates 212 are slidably connected to both ends of the central plate 211.

[0021] Referring to Figure 1 and Figure 2 , two cylinders 12 are also installed at the top of the lifting platform 1. The telescopic ends of the two cylinders 12 face away from each other and are staggeredly distributed. The telescopic ends of the cylinders 12 are respectively fixed to the ends of the two movable plates 212. A limiting rod 213 is provided at the bottom of the central plate 211, and the limiting rod 213 passes through the two movable plates 212. When the cylinder 12 pushes the movable plate 212 forward, the limiting rod 213 can enable the movable plate 212 to move forward along the direction of the limiting rod 213, which helps the movable plate 212 not to tilt during sliding.

[0022] Referring to Figure 1 , a protective plate 23 is hinged to the railing 22 on the movable plate 212. The protective plate 23 is a telescopic structure, and one end of the previous section of the protective plate 23 is turned inward, and one end of the next section of the protective plate 23 connected to it is turned outward to form a limit. The protective plate 23 is usually folded on one side of the railing. When in use, the protective plate 23 can be pulled out and rotated to be perpendicular to the railing on the movable plate 212, which can play a certain protective role.

[0023] Referring to Figure 2 andFigure 3 The support mechanism 3 includes a plurality of fixed rods 31, which are hinged to the side wall of the top platform of the lifting platform 1. The fixed rods 31 are telescopic structures, which are hollow and open at the ends. An inner rod 36 is slidably penetrated through the inner cavity of the fixed rod 31, and a stopper is provided between the inner rod 36 and the fixed rod 31, which can be a bolt. A groove 32 for inserting the inner rod 36 is provided at the bottom of the movable plate 212. The groove 32 is provided with a plurality of grooves along the sliding direction of the movable plate 212. The fixed rod 31 can rotate and use the inner rod 36 to extend and retract, and through the limit of the stopper, the inner rod 36 is inserted into the groove 32. In order to enable the inner rod 36 to be smoothly engaged in the groove 32, the opening size of the groove 32 is larger than the size of the inner rod 36.

[0024] A positioning shaft 33 is pinned in each groove 32, and a through hole for the positioning shaft 33 to pass through is dug on the inner rod 36. The pin structure can lock the inner rod 36 in the groove 32 so that it does not fall off, thereby maintaining the fixed rod 31 and the inner rod 36 obliquely inserted into the groove 32 and supporting the movable plate 212; opening a plurality of grooves 32 can make the movable plate 212 slide different distances and allow the fixed rod 31 to be inserted.

[0025] Reference Figure 3 The end of the positioning shaft 33 away from the inner rod 36 extends outward with a toggle rod 34 for grabbing and toggling. The toggle rod 34 is fixedly connected with a pull rope. When the workbench is raised to a high position, the pull rope can be set to facilitate the worker to drive the toggle rod 34 through the pull rope, so as to toggle the positioning shaft 33 through the through hole on the fixed rod 31. The end of the inner rod 36 away from the fixed rod 31 is rotatably connected with a vertical rod 35. When the workbench 2 is in a high working position, the inner rod 31 can be rotated into the groove 32 by lifting the vertical rod 35. It should be noted that the vertical rod 35 of a suitable length can be selected according to the actual height.

[0026] Reference Figure 1 The hoisting mechanism 4 is installed on the center plate 211. The hoisting mechanism 4 includes a hanging arm 41 and a rectangular base 42. The base 42 is slidably connected to the center plate 211. A sliding groove for the base 42 to slide horizontally is provided on the top of the center plate 211. A base 421 is rotatably connected to the base 42. The hanging arm 41 is installed on the base 421. The position of the hoisting mechanism 4 can be changed by rotating the base 421 and sliding the base 42, so that the construction area can be changed more conveniently.

[0027] Reference Figure 1 The boom 41 includes a first connecting rod 411 and a second connecting rod 412. One end of the first connecting rod 411 is installed on a base 421, and the other end is rotatably connected to the second connecting rod 412. A first hydraulic cylinder 43 is rotatably connected to the base 421, and the telescopic end of the first hydraulic cylinder 43 is rotatably connected to the second connecting rod 412.

[0028] The first hydraulic cylinder 43 is arranged to play a supporting role when the second connecting rod 412 hoists heavy objects. With the telescoping and rotation of the first hydraulic cylinder 43, it is convenient to push the second connecting rod 412 to change the angle.

[0029] Referring to Figure 1 , a winch 48 is installed on the base 421, a fixed pulley 47 is fixed on the second connecting rod 412, a second hydraulic cylinder 45 is installed inside the second connecting rod 412, the telescopic end of the second hydraulic cylinder 45 extends out of the second connecting rod 412 and is fixedly connected with a connecting block 46. A through hole is dug on the connecting block 46. The steel wire rope of the winch 48 bypasses the fixed pulley 47 and passes through the through hole on the connecting block 46 and is connected with a hook 44. Thus, the position of the hook 44 can be raised or lowered by the winch 48.

[0030] Implementation principle:

[0031] Use the air cylinder 12 to push the movable plate 212 to expand the area of the workbench 2. Then, push the inner rod 36 into the groove 32, pull the pull rope to drive the toggle rod 34 to slide, lock the inner rod 36, and raise the lifting platform 1 to the construction location.

[0032] According to the position of the construction area and the position of the item to be hoisted, rotate the angle of the base 421 to adjust the orientation of the boom 41. According to the on-site hoisting situation, use the winch 48 to wind or unwind the steel wire rope to raise or lower the height of the hoisted item. According to the on-site hoisting situation, adjust the position of the second connecting rod 412 through the first hydraulic cylinder 43 to expand the range.

[0033] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A construction hoisting platform in a subway tunnel, characterized by: The invention comprises a workbench (2), a lifting mechanism (4) and a lifting platform (1), wherein the workbench (2) is mounted on the top of the lifting platform (1), the workbench (2) comprises a rectangular bottom plate (21), and the two ends of the bottom plate (21) in the length direction can be extended outwards, the lifting mechanism (4) is mounted at the center of the bottom plate (21), the lifting mechanism (4) comprises a rectangular base (42) and a lifting arm (41), a sliding groove is provided on the upper surface of the bottom plate (21), the base (42) is slidably connected in the sliding groove, a base (421) is rotatably connected to the base (42), one end of the lifting arm (41) is mounted on the base (421), and the other end extends out of the workbench (2), and the lifting arm (41) is connected to a hook (44).

2. The subway tunnel construction hoisting platform according to claim 1 is characterized by: The bottom plate (21) comprises a central plate (211) fixedly connected to the top of the lifting platform (1) and movable plates (212) respectively connected to the two ends of the central plate (211) in the length direction; a movable groove is provided at the bottom of the central plate (211) along the length direction; the movable plate (212) is slidably connected in the movable groove; a cylinder (12) is fixed at the top of the lifting platform (1); the cylinder (12) has two telescopic ends which face away from each other, and the telescopic ends of the two cylinders (12) are respectively fixed to the two movable plates (212); a limiting rod (213) is provided at the bottom of the central plate (211) along the length direction; the limiting rod (213) is passed through the two movable plates (212).

3. The subway tunnel construction hoisting platform according to claim 2 is characterized by: Railings (22) are vertically fixed on the central plate (211) and the movable plate (212); the railings (22) are arranged at both ends of the central plate (211) in the width direction and at the end of the movable plate (212) away from the central plate (211); both ends of the railing (22) on the movable plate (212) are rotatably connected to protective plates (23), respectively; the protective plates (23) are of a telescopic structure and are telescopic along the sliding direction of the movable plate.

4. The subway tunnel construction hoisting platform according to claim 2, characterized in that: The movable plate (212) further comprises a support mechanism (3), wherein a groove (32) is provided at the bottom thereof, wherein the support mechanism (3) comprises a fixed rod (31), wherein the fixed rod (31) is rotatably connected to the side wall of the top table plate of the lifting platform (1), wherein a positioning shaft (33) for penetrating and locking the fixed rod (31) is pinned in the groove (32), wherein a toggle rod (34) is extended outward from the positioning shaft (33), wherein the fixed rod (31) is hollow and has an open end, wherein an inner rod (36) is slidably penetrated through the inner cavity of the fixed rod (31), and the inner rod (36) is telescopically slidable along the length direction of the fixed rod (31), wherein a stopper is provided between the fixed rod (31) and the inner rod (36), wherein the inner rod (36) is inserted into the groove (32) and is locked by the positioning shaft (33), and wherein a plurality of grooves (32) are provided along the sliding direction of the movable plate (212).

5. The subway tunnel construction hoisting platform according to claim 4 is characterized by: One end of the inner rod (36) away from the fixed rod (31) is rotatably connected to a hanging rod (35), and the toggle rod (34) is connected to a pull rope.

6. The subway tunnel construction hoisting platform according to claim 1, characterized in that: The boom (41) comprises a first connecting rod (411) and a second connecting rod (412), the first connecting rod (411) and the second connecting rod (412) being rotatably connected, one end of the first connecting rod (411) away from the second connecting rod (412) being mounted on a base (421), a winch (48) being mounted on the base (421), a fixed pulley (47) being mounted on the second connecting rod (412), a connecting block (46) for a steel wire rope of the winch (48) to pass through being arranged on one end of the second connecting rod (412) away from the workbench (2), the steel wire rope of the winch (48) passing through the fixed pulley (47) and passing through the connecting block (46) and being connected to the hook (44), the base (421) being rotatably connected to a first hydraulic cylinder (43), the telescopic end of the first hydraulic cylinder (43) being rotatably connected to the second connecting rod (412).

7. The subway tunnel construction hoisting platform according to claim 6, characterized in that: A second hydraulic cylinder (45) is disposed in the second connecting rod (412), and a telescopic end of the second hydraulic cylinder (45) extends out of the end of the second connecting rod (412) and is fixedly connected to the connecting block (46).

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