Lifting device for construction

Abstract

The utility model provides a lifting device for construction. The lifting device comprises a supporting rod set and a lifting rod set. The supporting rod set is provided with a pair of parallel supporting pipes, and the supporting pipes are connected through a plurality of cross rods arranged at intervals. The lifting rod set comprises a pair of supporting rods arranged in parallel, the upper ends of the two supporting rods are connected through a connecting rod, and the two supporting rods are arranged in the two supporting pipes in a penetrating mode respectively. Suspension beams are rotationally arranged on the opposite sides of the supporting rods, the supporting rods are movably arranged along the axis relative to the supporting pipe, and when the suspension beams and the supporting rods enter the supporting pipe together, the suspension beams swing upwards; when the connecting part of the suspension beam and the supporting rod enters the supporting pipe, the suspension beam and the supporting rod are arranged in the supporting pipe in a penetrating manner; and when the connecting part of the suspension beam and the supporting rod is located outside the supporting pipe, the suspension beam horizontally faces the supporting rod on the other side. According to the scheme, the overall structure is simple, scaffold lifting is facilitated, multiple parts do not need to be dismantled, and operation is more convenient and faster.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of lifting device, especially, a kind of lifting device for construction. BACKGROUND

[0002] In the process of street lamp installation, it is often necessary to use scaffold for construction, the existing scaffold needs to be built layer by layer, to support enough height, the scaffold usually includes at least four support columns, multiple diagonal struts and multiple plates, so the process of building and removing is more tedious, to simplify the lifting process of scaffold, it is necessary to design a liftable support device to replace the support column of scaffold. SUMMARY

[0003] To solve the technical problems of the prior art, the utility model provides a lifting device for construction, which is simple in overall structure, convenient for lifting scaffold, does not need to remove multiple parts, and is more convenient and fast to operate.

[0004] To achieve the purpose of the utility model, the following scheme is adopted:

[0005] A lifting device for construction includes a support rod group and a lifting rod group.

[0006] The support rod group is provided with a pair of parallel support pipes, and the support pipes are connected by a plurality of horizontally arranged rods;

[0007] The lifting rod group includes a pair of parallel support rods, and the upper ends of the two support rods are connected by a connecting rod, and the two support rods are arranged in the two support pipes respectively;

[0008] The opposite sides of the support rods are rotatably provided with suspending beams, and the support rods are movably arranged along the axis of the support pipes, when the suspending beam and the support rod enter the support pipe together, the suspending beam swings upward, when the connecting part of the suspending beam and the support rod enters the support pipe, the suspending beam and the support rod are arranged in the support pipe, and when the connecting part of the suspending beam and the support rod is outside the support pipe, the suspending beam is horizontally arranged towards the other support rod.

[0009] The utility model has the advantages that: two groups of lifting devices according to the utility model can assist in building the platform to form the scaffold, the height of the platform can be controlled by adjusting the height of the lifting rod group, so as to adjust the height of the scaffold, the parts do not need to be disassembled, the height of the scaffold can be quickly adjusted, and the operation process is more simple and fast. BRIEF DESCRIPTION OF DRAWINGS

[0010] The drawings described herein are only for illustrating selected embodiments, not all possible embodiments, and are not intended to limit the scope of the utility model.

[0011] Figure 1The overall structural schematic diagram of the present application is shown.

[0012] Figure 2 The cross-sectional view of the overall structure of the present application is shown.

[0013] Figure 3 The overall structural schematic diagram of the present application is shown. Figure 2 The partial method diagram at A in the figure.

[0014] Figure 4 The cross-sectional view along the direction B-B in the figure is shown. Figure 2 The cross-sectional view along the direction B-B in the figure is shown.

[0015] Marked in the figure: support pipe-11, cross bar-12, worm gear-13, worm-14, screw-15, support rod-21, connecting rod-22, suspension beam-23, support block-24, elastic member-25. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the embodiments of the present application will be described in detail below with reference to the drawings, but the embodiments described in the present application are part of the embodiments of the present application, not all the embodiments.

[0017] As shown in the figure, a construction lifting device comprises: a support rod group and a lifting rod group. Figures 1 to 4 The support rod group is provided with a pair of parallel support pipes 11, and the support pipes 11 are connected through a plurality of interval arranged cross bars 12.

[0018] The lifting rod group comprises a pair of parallel arranged support rods 21, and the upper ends of the two support rods 21 are connected through a connecting rod 22, and the two support rods 21 are respectively arranged in the two support pipes 11.

[0019]

[0020] ​The opposite side of the support rod 21 is rotationally provided with a cantilever beam 23, and the support rod 21 is movably arranged relative to the support pipe 11 along the axis to adjust the height of the lifting rod group. After adjustment, the support rod 21 can be fixed by means of locking screws arranged on the side wall of the support pipe 11, so as to lock the height position of the lifting rod group. When the cantilever beam 23 and the support rod 21 enter the support pipe 11 together, the cantilever beam 23 swings upward. When the connecting part of the cantilever beam 23 and the support rod 21 enters the support pipe 11, the cantilever beam 23 and the support rod 21 are arranged in the support pipe 11. When the connecting part of the cantilever beam 23 and the support rod 21 is outside the support pipe 11, the cantilever beam 23 is horizontally directed to the other support rod 21. Here, the horizontal does not mean absolute horizontal. As a preferred solution, the cantilever beam 23 can be slightly inclined upward toward one end of the other support rod 21. Specifically, a support block 24 can be arranged on the support rod 21 corresponding to the lower side of the cantilever beam 23 to limit the limit position of the cantilever beam 23 after downward rotation and provide support force for the cantilever beam 23, so as to facilitate the worker to climb upward by stepping on the cantilever beam 23.

[0021] In use, the two groups of the above construction lifting devices are combined for use. One or more flat plates are used to connect the connecting rods 22 of the two groups of lifting rod groups to form the structure of the scaffold. Four support pipes 11 and four support rods 21 form the support columns of the scaffold. The height of the flat plate is controlled by adjusting the height of the lifting rod group to adjust the height of the scaffold. The solution does not need to disassemble and assemble parts, and can quickly adjust the height of the scaffold. The operation process is more simple and fast. In use, the operator can climb upward to the flat plate by means of the cross rod 12 and the cantilever beam 23 to install and construct the lamp.

[0022] Preferably, an elastic member 25 is arranged between the cantilever beam 23 and the corresponding support rod 21. When the cantilever beam 23 and the support rod 21 are arranged in the support pipe 11 together, the elastic member 25 is in a compressed state. When the connecting part of the cantilever beam 23 and the support rod 21 protrudes from the top of the support pipe 11, the elastic member 25 is used to quickly open the cantilever beam 23 to make the cantilever beam 23 automatically suspended on the support rod 21, so as to facilitate the operator to directly climb and use. When the cantilever beam 23 is arranged in the support pipe 11, the elastic member 25 is used to open the cantilever beam 23 relative to the support rod 21, so that the cantilever beam 23 is pressed against the inner wall of the support pipe 11 to eliminate the gap between the cantilever beam 23 and the support pipe 11 and the support rod 21, thereby reducing the shaking between the lifting rod group and the support rod group and improving the stability of the lifting device in use.

[0023] Further preferably, as shown in Figure 3 the elastic member 25 is a spring sheet structure arranged above the rotating connection part of the cantilever beam 23 and the support rod 21 and connected to the support rod 21. The arrangement of the elastic member 25 at this position can avoid the operator stepping on the elastic member 25 and the influence of the elastic member 25 on the operator climbing.

[0024] Further preferably, as shown in Figure 3 the lower end of the elastic member 25 is connected with the support rod 21, and the upper end of the elastic member 25 is connected with the support rod 21 at an upward opening angle, so as to prevent the suspension beam 23 from being stuck, and thus the suspension beam 23 cannot be smoothly inserted into the support pipe 11.

[0025] Preferably, as shown in Figures 1 to 3 the suspension beams 23 on the two support rods 21 are arranged in pairs, when the suspension beams 23 are in a suspended state, the end faces of the two suspension beams 23 arranged in pairs are abutted with each other, and the included angle between the two suspension beams 23 is less than 180 degrees, and the included angle between the suspension beam 23 and the upper section of the corresponding support rod 21 is less than 90 degrees. The purpose of this structure design is mainly to make the two suspension beams 23 arranged in pairs form a bridging structure, support each other, prevent the suspension beam 23 from swinging downward, and thus improve the load bearing capacity of the suspension beam 23. At the same time, the reaction force generated by the two suspension beams 23 when they are overlapped is used to press the support rod 21 tightly against the side wall of the support pipe 11, so as to effectively prevent the support rod 21 from shaking in the support pipe 11, and thus further improve the stability of the lifting device during use.

[0026] Further preferably, as shown in Figures 1 to 4 the bottom of the horizontal rod 12 at the uppermost end of the support pipe 11 is rotatably provided with a worm gear 13, and is engaged with a worm 14, the worm 14 is rotatably connected to the horizontal rod 12 on which the worm gear 13 is installed, the worm 14 is manually rotated or driven by a motor, a threaded hole is coaxially provided in the inside of the worm gear 13, a screw rod 15 is provided through the threaded hole, the upper end of the screw rod 15 is fixedly connected with the connecting rod 22, the horizontal rod 12 is provided with a through hole for passing through the screw rod 15, and the opposite end of the suspension beam 23 arranged in pairs is provided with a avoiding slot for passing through the screw rod 15, when in use, the worm 14 is rotated to drive the worm gear 13 to rotate, and the worm gear 13 drives the screw rod 15 to move along the axis, this transmission mechanism has two self-locking structures for preventing the lifting rod group from falling, one is the threaded connection structure between the screw rod 15 and the worm gear 13 for preventing the screw rod 15 from moving downward, and the other is that the worm 14 locks the worm gear 13 to prevent the worm gear 13 from rotating by itself; and the above driving mechanism can make the lifting rod group ascend stably.

[0027] The preferred embodiments of the utility model are described above, which does not mean that it is the only or limiting the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model shall fall within the protection scope of the utility model.

Claims

1. A construction hoist characterized by, The utility model relates to a kind of support frame, including: Supporting rod group is equipped with a pair of parallel support tubes (11), and support tube (11) is connected by multiple interval setting cross bars (12) between support tube (11); Lifting rod group includes a pair of parallel support rods (21), and the upper end of two support rods (21) is connected by a connecting rod (22), and two support rods (21) are respectively arranged in two support tubes (11); Support rod (21) is rotatably provided with cantilever beam (23) on opposite side, and support rod (21) is movably arranged along the axis relative to support tube (11), when cantilever beam (23) and support rod (21) enter support tube (11) together, cantilever beam (23) swings upward;When the connecting part of cantilever beam (23) and support rod (21) enters support tube (11), cantilever beam (23) and support rod (21) are arranged in support tube (11);When the connecting part of cantilever beam (23) and support rod (21) is outside support tube (11), cantilever beam (23) is horizontally oriented to the other side of support rod (21).

2. The construction hoist of claim 1, wherein Spring piece structure is arranged between cantilever beam (23) and corresponding support rod (21), and spring piece (25) is in compression state when cantilever beam (23) and support rod (21) are arranged in support tube (11) together.

3. The construction hoist of claim 2, wherein, Spring piece (25) is spring piece structure, which is installed above the rotating connection part of cantilever beam (23) and support rod (21), and is connected to support rod (21).

4. The construction hoist of claim 3, wherein, The lower end of spring piece (25) is connected to support rod (21), and the angle between the upper end of spring piece (25) and support rod (21) is upward.

5. The construction hoist of claim 1, wherein The cantilever beams (23) on the two support rods (21) are arranged in pairs, and when the cantilever beams (23) are in a suspended state, the end faces of the two cantilever beams (23) arranged in pairs relative to one end abut each other, and the angle between the two cantilever beams (23) is less than 180 degrees, and the angle between the cantilever beam (23) and the upper segment of the corresponding support rod (21) is less than 90 degrees.

6. A construction hoist according to claim 5, wherein A worm gear (13) is rotatably arranged at the bottom of the cross bar (12) at the uppermost end of the support tube (11), and a worm (14) is engaged with the worm gear (13), the worm (14) is rotatably connected to the cross bar (12) on which the worm gear (13) is installed, the worm (14) is driven by hand or motor, a threaded hole is coaxially arranged in the worm gear (13), a screw rod (15) is arranged in the threaded hole, the upper end of the screw rod (15) is fixedly connected to the connecting rod (22), and the cross bar (12) is provided with a through hole for passing through the screw rod (15), and the opposite end of the cantilever beam (23) arranged in pairs is provided with a avoiding slot for passing through the screw rod (15).

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