Tri-pod mast lifting device

Abstract

The three-legged mast hoisting device comprises a base plate, a supporting leg, a reinforcing force rod, a cross beam, a supporting frame lifting device and an upper lifting sliding device. Each supporting leg is of a two-section structure. An adjusting device is installed between each two-section supporting leg. The lower ends of two sets of reinforcing force rods and two sets of supporting legs are respectively installed on the upper ends of a plurality of base plates. The lower end of each set of reinforcing force rods and the upper end of a set of hydraulic oil cylinders A are fixedly installed together. The lower end of the hydraulic oil cylinder A is installed on the base plate. The front and rear lower ends of two cross beams are respectively installed on the upper ends of two sets of supporting legs and reinforcing force rods. The upper ends of the two cross beams are respectively installed with a limiting pipe. The upper lifting sliding device is inserted into two supporting pipes. Two sets of supporting frame lifting devices are respectively hooked on the lower ends of the two cross beams. The present application is convenient for transportation and installation, can be matched with light mechanical operation, greatly improves hoisting efficiency, reduces the construction cost of cast-in-place piles, can realize accurate positioning and smooth and slow entry into a hole, and avoids secondary hole cleaning.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of auxiliary equipment for cast-in-place pile construction, in particular to a tripod mast lifting device. BACKGROUND

[0002] With the rapid development of bridge construction, concrete cast-in-place piles have been widely used in pile foundation construction, and the placement of steel reinforcement cage has followed. At present, for steel reinforcement cages with a length exceeding 24m, the general method is to make and place them in sections. Due to technical limitations, the following shortcomings still exist. First, the steel reinforcement cage is generally placed by whole lifting or six-point lifting, which is highly dependent on heavy machinery, and requires a wide construction site. When the construction conditions are limited, it becomes more difficult to place the steel reinforcement cage. Second, when the length of the cast-in-place pile and the pile hole exceeds 24m, the steel reinforcement cage needs to be made and installed in sections. However, due to the limited construction site, it is difficult to splice the completed multi-section steel reinforcement cage. Third, when the steel reinforcement cage is placed (the adjacent steel reinforcement cages above and below reach the installation position), it is difficult to command the heavy machinery to lift and place it, the positioning accuracy is not enough, and a large amount of hole wall residue enters the hole, resulting in the need for secondary hole cleaning. At the same time, when the steel reinforcement cage is lifted by heavy machinery, it may rotate and swing, affecting its stability and safety. SUMMARY

[0003] In order to overcome the limitations of the existing steel reinforcement cage placement method due to technology, the present application provides a tripod mast lifting device that can lift the steel reinforcement cage into the hole under the joint action of related mechanisms, limit the steel reinforcement of the second section by the upper lifting and sliding device, provide a safe and convenient operating environment for splicing construction personnel, and simultaneously cooperate with small machinery to smoothly lift the spliced steel reinforcement cage into the pile hole after splicing, synchronize the multi-section steel reinforcement cage "splicing - hole placement" process, reduce the use of heavy machinery, and improve the pile foundation construction quality and lifting efficiency.

[0004] The technical solution adopted by the present application to solve its technical problems is:

[0005] The tripod mast hoisting device comprises a base plate, a supporting leg, a reinforcing pole, a crossbeam, a supporting frame lifting device and an upper lifting sliding device, characterized in that the supporting leg and the reinforcing pole each have at least two sets, each set of the supporting leg has at least two supporting legs, each supporting leg is in a two-section structure, an adjusting device is installed between each two-section supporting leg, each set of the adjusting device comprises a hydraulic cylinder and a steel pipe, the lower end of the hydraulic pump and the upper end of the steel pipe are fixedly installed together, the lower end of the hydraulic pump and the upper end of the steel pipe are fixedly installed together with the lower end of the upper section and the upper end of the lower section of each supporting leg, respectively; the base plate has a plurality of base plates, the lower ends of the two sets of reinforcing poles and the two sets of supporting legs are fixedly installed on the upper ends of the plurality of base plates at an annular interval, and the lower ends of each set of reinforcing poles are located in the middle of the lower ends of each set of two supporting legs; the lower end of each set of reinforcing poles is fixedly installed with the upper end of a set of hydraulic cylinders A, and the lower end of the hydraulic cylinder A is fixedly installed on the base plate; the crossbeam has at least two crossbeams, the front and rear ends of the two crossbeams are fixedly installed with the upper ends of the two sets of supporting legs and reinforcing poles, and the upper ends of the two crossbeams are respectively installed with a limiting pipe; the upper lifting sliding device comprises at least two rings and at least two supporting pipes, the upper and lower ends of the two supporting pipes are respectively installed on the two sides between the two rings, the lower ends of the two rings are respectively installed with a positioning rod, and the two positioning rods are respectively inserted into the two supporting pipes; the supporting frame lifting device has two sets, each set of the supporting frame lifting device comprises a steel wire rope and a hand-operated hoist, the upper end of the steel wire rope is installed on the winding drum of the hand-operated hoist, a hook is installed on the lower end of the steel wire rope, and the upper ends of the two sets of ring chain hand-operated hoists are respectively hooked on the lower ends of the two crossbeams.

[0006] Further, the plurality of base plates are respectively installed on the concrete base, and the lower ends and the upper ends of the supporting legs and the reinforcing poles are respectively connected with the upper ends of the base plates and the lower ends of the crossbeams through pins and pin rings.

[0007] Further, the plurality of supporting legs and the plurality of reinforcing vertical poles are respectively located outside the lower ends of the two crossbeams, and are in an inwardly inclined structure from bottom to top.

[0008] Further, the hydraulic cylinders of the supporting legs and the hydraulic cylinders A of the reinforcing vertical poles are respectively connected with a plurality of oil return pipes of the electric hydraulic pump through hydraulic hoses.

[0009] Further, one side end of one of the crossbeams is installed with a climbing ladder.

[0010] Further, the inner diameter of the upper lifting sliding device and the inner diameter formed by the two crossbeams are greater than the outer diameter of the steel reinforcement cage at the construction site.

[0011] Further, when the piston rods of the hydraulic cylinders of the supporting legs and the hydraulic cylinders A of the reinforcing vertical poles are located at the upper dead point, the height of the upper lifting sliding device is higher than the height of one section of the steel reinforcement cage.

[0012] Further, the supporting frame lifting device can also use an electric hoist.

[0013] Further, the upper ends of the two legs are respectively located at the lower parts of the front and rear ends of the two beams, and the upper ends of the two reinforcing vertical rods are respectively located at the middle parts of the lower ends of the two beams.

[0014] The application has the advantages that: the assembled application is in the shape of a tripod mast, is convenient to disassemble and assemble, and is convenient to transport and install, can be flexibly adjusted in height according to the site environment, can be combined with light machinery such as a truck crane and a tower crane for operation, thereby replacing heavy machinery for work, can satisfy various combined constructions in a limited site, greatly improves hoisting efficiency, and reduces the construction cost of cast-in-place piles; in application, the hook of the ring chain hand-operated hoist is used to lift the second reinforcement cage, and the joint between the first reinforcement cage and the second reinforcement cage is adjusted to be in the corresponding position, the lifting and sliding device at the upper part of the beam is used to limit the second reinforcement cage, then the two reinforcement cages are connected, the process of "splicing-in-hole" of the two sections of the reinforcement cage is completed, after the two sections of the reinforcement cage are spliced and inspected, the lifting and sliding device at the upper part of the beam and the lifting device of the support can be matched with each other to send the two sections of the reinforcement cage into the hole, and the problem of splicing and entering the hole of multiple sections of the reinforcement cage is solved in sequence, accurate positioning and stable and slow entering into the hole are realized, and the residual slag in the hole is avoided from entering the hole for secondary hole cleaning, so the application has good application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0015] The application will be further described below in combination with the drawings and embodiments.

[0016] Figure 1 is a whole structure plan view of the application.

[0017] Figure 2 is a top plan structure schematic view of the application.

[0018] Figure 3 is a beam plan structure schematic view of the application.

[0019] Figure 4 is a plan structure schematic view of the upper lifting and sliding device of the application. DETAILED DESCRIPTION

[0020] Figure 1 、 2The three-legged mast hoisting device shown in the drawings comprises a base plate 1, a supporting leg 2, a reinforcing pole 4, a cross beam 5, a supporting frame lifting device and an upper lifting sliding device. The supporting leg 2 and the reinforcing pole 4 each have two sets. Each set of the supporting leg 2 has two supporting legs. Each supporting leg has a two-section structure. An adjusting device (not shown in the drawings) is installed between each two-section supporting leg. Each set of the adjusting device comprises a hydraulic cylinder and a steel pipe. The lower end of the steel pipe and the piston rod of the hydraulic cylinder are fixedly installed together. The lower end of the cylinder body of the hydraulic cylinder and the upper end of the steel pipe are fixedly installed together with the lower end of the upper section and the upper end of the lower section of each supporting leg. The base plate 1 has six base plates. Each three base plates are matched with a set of reinforcing poles 4 and a set of supporting legs 2 for installation and use. The lower ends of the two sets of reinforcing poles 4 and the two sets of supporting legs 2 are fixedly installed around the upper ends of the six base plates 1 at a certain distance. The lower end of each set of the reinforcing poles 4 is located in the middle between the lower ends of each set of the two supporting legs 2. The lower end of each set of the reinforcing poles 4 and the upper end of the piston rod of a set of hydraulic cylinders A (not shown in the drawings) are fixedly installed together. The lower end of the cylinder body of the hydraulic cylinder A is fixedly installed on the base plate 4. The cross beam 5 has two cross beams. The front and rear ends of the two cross beams are fixedly installed with the upper ends of the two sets of supporting legs 2 and the reinforcing poles 4. The middle upper ends of the two cross beams are vertically welded with a limiting pipe 10. The upper lifting sliding device comprises two ring sleeves 11 and two supporting pipes 12. The upper and lower ends of the two supporting pipes 12 are welded with the left and right middle parts between the two ring sleeves 11. The lower ring sleeves 11 are vertically welded with a positioning rod 13 at the left and right ends of the lower side. The two positioning rods 13 are inserted into the two limiting pipes 10. The supporting frame lifting device has two sets. Each set of the supporting frame lifting device comprises a wire rope 15, a chain hand hoist 14 and a hook 16. The upper end of the wire rope 15 is installed on the winding cylinder of the chain hand hoist 14. The lower end of the wire rope 15 and the upper end of the hook 16 are fixedly installed together. The upper ends of the two sets of chain hand hoists 14 are hooked to the lower middle parts of the two cross beams 5. The upper ends of the two supporting legs 2 and the other two supporting legs 2 are located at the front and rear lower parts of the two cross beams 5. The upper ends of the two reinforcing poles 4 are located at the lower middle parts of the two cross beams 5.

[0021] Figure 1 、 2As shown in Figs. 1, 2, 3, and 4, six pads 1 are respectively installed on the annular concrete base (such as the upper end side of the bridge pile hole), the lower end and upper end of the supporting leg 2 and the reinforcing force rod 4 are respectively connected with the upper end of the pad 1 and the lower end pin ring of the crossbeam 5 through a pin. The four supporting legs 2 and the two reinforcing vertical rods 4 are respectively located at the outer side of the lower end of the two crossbeams 5, and are gradually folded inwardly and inclined from bottom to top. The hydraulic cylinder of the supporting leg 2 and the hydraulic cylinder A of the reinforcing vertical rod 4 are respectively connected with the multiple oil return pipes of the electric hydraulic pump through high-pressure hydraulic hoses. The right end crossbeam 4 is provided with a spiral movable ladder step (for facilitating the staff to operate on high places, and for hooking the reinforcement cage 17 through a lifting hook). The inner diameter of the upper lifting sliding device and the inner diameter formed by the two crossbeams 5 are greater than the outer diameter of the reinforcement cage 17 at the construction site. When the piston rod of the hydraulic cylinder of the supporting leg 2 and the hydraulic cylinder A is located at the upper dead point, the height of the upper lifting sliding device is higher than the height of one section of the reinforcement cage. The lifting device of the support can also be replaced by an electric hoist.

[0022] Figure 1 、 2 As shown in Figs. 1, 2, 3, and 4, the assembled device is in the shape of a tripod mast, and is mainly used for pile pouring and is matched with the bridge pile hole. Before use, the annular distribution is installed on the side end of the pile hole. According to the following operation process: after the reinforcement cage 17 is transported to the construction site, the 25t or more automobile crane is positioned, and then the automobile crane is used to hoist and install the first section of the reinforcement cage 17 into the hole, and then the second section of the reinforcement cage 17 is hoisted and connected with the first section of the reinforcement cage 17. The device is used to lift the multiple sections of the reinforcement cage 17 into the hole by taking every 2m as a node. The above process is repeated until the multiple sections of the reinforcement cage 17 are vertically installed into the hole and the installation is completed. The operation method is as follows: after the reinforcement cage 17 is completed, the device is transported to the construction site by a supporting plate vehicle, the automobile crane (or a tower crane is used) is positioned, the hoisting radius (range) is not greater than 12m, and the hoisting weight is not greater than 3t; the device is assembled on the side of the pile hole by manual operation (or the automobile crane is used), and the upper operation flat stone (scaffold) is assembled. The automobile crane hoists the first section of the reinforcement cage 17 into the hole, the hole is supported by the horizontal bar, the second section of the reinforcement cage 17 is positioned and connected (including detection pipe), and after the binding hoop is qualified, the device is used to lift the second section of the reinforcement cage 17 into the hole by 2.0m interval, the horizontal bar is supported, the hook is removed, the second section of the reinforcement cage 17 is lifted by 2.0m (the cross welding part of the reinforcing bar and the main reinforcing bar), the horizontal bar is lowered into the hole, and the device is used to gradually enter the hole by the circulation operation method until the design requirement is met.

[0023] Figure 1 、 2, 3, 4, in the operation of the present application, the first section of reinforcement cage 17 is hoisted into the support lifting device and the upper lifting sliding device (limiting the reinforcement cage to prevent its left and right swing from being too large) from top to bottom, and after the lower part of the reinforcement cage 17 is located in the pile hole, the workers insert a horizontal support rod (horizontal rod support) on both sides of the middle of the reinforcement cage 17, so that the reinforcement cage 17 is horizontally placed on the pile hole, then the crane hoists the second section of reinforcement cage 17 and removes the hook of the crane, the workers hook the hooks of the two sets of hand-operated hoists 14 on both sides of the upper end of the second section of reinforcement cage 17, and after the second section of reinforcement cage 17 is suspended, the workers adjust its position by hand, so that the lower end of the second section of reinforcement cage 17 and the upper end of the first section of reinforcement cage 17 are aligned, then the workers operate to lower the hooks of the two sets of hand-operated hoists 14, the lower end of the second section of reinforcement cage 17 and the upper end of the first section of reinforcement cage 17 are aligned, so that the workers can weld or bind the first section of reinforcement cage and the second section of reinforcement cage 17. After the second section of reinforcement cage 17 is fixed, the workers hoist the first and second sections of reinforcement cage 17 by the hooks of the two sets of hand-operated hoists 14 (or the crane), then remove the horizontal support rod, and after the two sections of reinforcement cage 17 are placed in the pile hole from top to bottom, the workers insert a horizontal support rod (horizontal rod support) on both sides of the middle of the second section of reinforcement cage 17, so that the reinforcement cage 17 is horizontally placed on the pile hole; then the crane hoists the third section of reinforcement cage 17 for installation, the workers hook the hooks of the two sets of hand-operated hoists 14 on both sides of the upper end of the third section of reinforcement cage 17, and after the third section of reinforcement cage 17 is suspended, the workers adjust its position by hand, so that the lower end of the third section of reinforcement cage 17 and the upper end of the second section of reinforcement cage 17 are aligned, then the workers operate to lower the hooks of the two sets of hand-operated hoists 14, the lower end of the third section of reinforcement cage 17 and the upper end of the second section of reinforcement cage 17 are aligned, so that the workers can weld or bind the second section of reinforcement cage and the third section of reinforcement cage 17. After the third section of reinforcement cage 17 is fixed, the workers hoist the first and second, third sections of reinforcement cage 17 by the hooks of the two sets of hand-operated hoists 14 (or the crane), then remove the horizontal support rod, and the fourth section of reinforcement cage can be installed again. The above process is repeated, and the workers can vertically and accurately place multiple sections of reinforcement cage from top to bottom into the pile hole of the bridge (subsequent grouting). The legs 2 and the reinforcing vertical rods 4 of the present application can be conveniently adjusted in height by the hydraulic cylinders and hydraulic cylinders A, so that the height of the upper lifting sliding device can be conveniently adjusted, so that reinforcement cages 17 of different heights can be fixed and positioned, which is beneficial to stable installation (the height of each section of reinforcement cage 17 is low, the height of the upper lifting sliding device can be adjusted to be low, and vice versa).

[0024] Figure 1 、 2, 3, 4 are shown, through all the above technical solutions, the application is convenient to disassemble and assemble, transportation and installation are very convenient, the height can be flexibly adjusted according to the site environment, can cooperate with automobile crane and tower crane and other light mechanical operation, and then replace heavy mechanical work, can satisfy the limited site to carry out a variety of combined construction, greatly improve the hoisting efficiency, reduce the construction cost of cast-in-place pile;In application, the lifting hook of the chain hoist is used to lift the second reinforcement cage, and the joint between the first reinforcement cage is adjusted to the corresponding position, the lifting sliding device on the upper part of the cross beam limits the second reinforcement cage, then the two reinforcement cages are connected, the '' assembly - into hole '' process of the two sections of the reinforcement cage is completed, after the two reinforcement cages are spliced and inspected, the lifting sliding device and the support lifting device on the cross beam can be matched with each other, the two reinforcement cages are sent into the hole, and the problem of splicing multiple reinforcement cages into the hole is solved in turn, accurate positioning can be realized, and the reinforcement cage enters the hole stably and slowly, so that the hole wall residue enters the hole for secondary hole cleaning, which plays a favorable technical support for convenient and efficient construction.

[0025] The above shows and describes the basic principles and main features of the application and the advantages of the application, for those skilled in the art, it is obvious that the application is limited to the details of the above exemplary embodiments, and the application can be realized in other specific forms without departing from the spirit or basic characteristics of the application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the application.

[0026] In addition, it should be understood that, although the present application is described in the form of embodiments, the embodiments do not contain only one independent technical solution, and the description of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in the embodiments can also be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A tripod mast lifting device comprising a base plate, legs, stiffening struts, cross beams, a jib lifting device and an upper lifting slide, characterised in that, The supporting legs and the reinforcing force rods each have at least two sets, each set of supporting legs has at least two supporting legs, each supporting leg has a two-section structure, an adjusting device is installed between each two-section supporting leg, each set of adjusting devices comprises a hydraulic oil cylinder and a steel pipe, the lower end of the steel pipe and the upper part of the hydraulic oil cylinder are fixedly installed together, the lower end of the hydraulic pump and the upper end of the steel pipe are fixedly installed with the lower end of the upper section and the upper end of the lower section of each supporting leg respectively; the base plates have multiple base plates, the lower ends of the two sets of reinforcing force rods and the two sets of supporting legs are fixedly installed at the upper ends of the multiple base plates in a ring shape with a spacing distance, and the lower ends of each set of reinforcing force rods are located in the middle part of the lower ends of each set of two supporting legs; the lower end of each set of reinforcing force rods and the upper end of a set of hydraulic oil cylinder A are fixedly installed together, and the lower end of the hydraulic oil cylinder A is fixedly installed on the base plate; the cross beams have at least two cross beams, the lower parts of the front and rear ends of the two cross beams are fixedly installed with the upper ends of the two sets of supporting legs and reinforcing force rods, and the upper ends of the two cross beams are respectively installed with a limiting pipe; the upper lifting sliding device comprises at least two ring sleeves and at least two supporting pipes, the upper and lower ends of the two supporting pipes are respectively installed on the two sides between the two ring sleeves, the lower ends of the two ring sleeves are respectively installed with a positioning rod, and the two positioning rods are respectively inserted into the two supporting pipes; the support lifting device has two sets, each set of support lifting device comprises a steel wire rope and a hand-operated hoist, the upper end of the steel wire rope is installed on the winding cylinder of the hand-operated hoist, a hook is installed at the lower end of the steel wire rope, and the upper ends of the two sets of ring chain hand-operated hoists are respectively hooked on the lower ends of the two cross beams; the multiple base plates are respectively installed on the concrete base, and the lower ends and the upper ends of the supporting legs and the reinforcing force rods are respectively connected with the upper ends of the base plates and the lower ends of the cross beams through pin joints and ring joints; the multiple supporting legs and the multiple reinforcing vertical rods are respectively located outside the lower ends of the two cross beams and are inclined inward from bottom to top; the inlet ends of the hydraulic oil cylinders of the supporting legs and the hydraulic oil cylinder A of the reinforcing vertical rods are respectively connected with multiple oil return pipes of the electric hydraulic pump through hydraulic hoses; the inner diameter of the upper lifting sliding device and the inner diameter formed by the two cross beams are greater than the outer diameter of the reinforcement cage at the construction site; when the piston rods of the hydraulic oil cylinders of the supporting legs and the hydraulic oil cylinder A of the reinforcing vertical rods are located at the upper dead point, the height of the upper lifting sliding device is higher than the height of a steel reinforcement cage; the upper ends of two supporting legs and the upper ends of the other two supporting legs are respectively located at the lower parts of the front and rear ends of the two cross beams, and the upper ends of the two reinforcing vertical rods are respectively located at the middle parts of the lower ends of the two cross beams.

2. Tripod mast lifting device according to claim 1, characterized in that One side end of one of the cross beams is installed with a climbing ladder.

3. The tripod mast lifting device of claim 1, wherein, The support lifting device can also use an electric hoist.

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