Easily-contractible small-diameter reinforced concrete pipe hanger

Abstract

The utility model relates to the technical field of building equipment, and discloses an easy-to-shrink small-diameter reinforced concrete pipe hanger, which comprises a bottom tray and a top tray arranged at the upper part of the bottom tray, the center position of the top tray is fixedly connected with a sleeve, the center position of the bottom tray is fixedly connected with a shaft rod, and the sleeve is fixedly connected with the shaft rod. The shaft rod penetrates through the top tray and the sleeve from bottom to top, the upper surface of the bottom tray is rotationally connected with a plurality of fixing rods through connecting bases, the lower surface of the top tray is rotationally connected with a plurality of rotating rods through connecting bases, and the fixing rods correspond to the rotating rods in number and position. One end of the fixed rod is rotationally connected with one end of the rotating rod, and a fixed tool bit is arranged at the end, close to the inner wall of the concrete pipe, of the fixed rod. The utility model solves the problems that the manual binding efficiency is low, the disassembly is slow, the concrete pipe orifice is damaged by the rope and the like when the reinforced concrete is hoisted and constructed.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, in particular to a small-diameter reinforced concrete pipe hoist with easy shrinkage. Background Technique

[0002] At present, municipal drainage pipes are composed of multiple sections of small-diameter reinforced concrete pipes buried underground. During the construction and installation process, they cannot be completely unloaded at the installation position at one time. It is necessary to use a crane to hoist the concrete pipe sections to the installation position. At present, for small-diameter reinforced concrete pipes, workers tie ropes to the concrete pipes, which is time-consuming and laborious, and the disassembly is slow. Moreover, there is a phenomenon that the ropes damage the concrete pipe orifices, resulting in loose joints. Content of the Utility Model

[0003] In order to solve the problems of the above-mentioned prior art, the utility model provides a small-diameter reinforced concrete pipe hoist with easy shrinkage, which solves the problems of low manual binding efficiency, slow disassembly, and damage to the concrete pipe orifices by ropes during the hoisting construction of reinforced concrete.

[0004] To achieve the above object, the utility model provides the following technical solution: A small-diameter reinforced concrete pipe hoist with easy shrinkage, including a bottom tray and a top tray arranged on the upper part of the bottom tray. A sleeve is fixedly connected to the central position of the top tray, and a shaft rod is fixedly connected to the central position of the bottom tray. The shaft rod passes through the top tray and the sleeve from bottom to top. Several fixing rods are rotatably connected to the upper surface of the bottom tray through connecting seats, and several rotating rods are rotatably connected to the lower surface of the top tray through connecting seats. The number and positions of the fixing rods and the rotating rods correspond to each other. One end of the fixing rod is rotatably connected to one end of the rotating rod. A fixing cutter head is arranged at one end of the fixing rod close to the inner wall of the concrete pipe.

[0005] With the above structural design, by clamping the hoist into the inner wall of the reinforced concrete pipe instead of manual wire binding, the binding time is saved, effective hoisting is realized, the hoisting is simpler and more reliable, the risk of damage to the concrete pipe is reduced, thereby ensuring the construction quality of the reinforced concrete pipe, reducing the installation workload, improving the installation efficiency, and having a simple composition, reduced cost, and being safe and applicable.

[0006] Preferably, two fixing nuts are symmetrically and fixedly connected to the upper surface of the top tray. Two rows of positioning nuts are arranged on the side wall of the shaft rod along the length direction. The positions of the fixing nuts and the positioning nuts correspond to each other. Both ends of the steel wire rope pass through the two rows of positioning nuts from top to bottom and are fixed to the two fixing nuts.

[0007] With the above structural design, when lifting the reinforced concrete pipe to the installation position, pull up the steel wire rope to lift the top tray upward. The connection between the rotating rod and the fixed rod approaches the shaft rod, and the fixed cutter head automatically contracts, thus separating from the inner wall of the reinforced concrete pipe, and the disassembly work can be realized.

[0008] Preferably, two side handles are symmetrically and fixedly connected to the side wall of the upper end of the shaft rod, and a lifting ring is fixedly connected to the upper end of the side handle.

[0009] With the above structural design, place the device into the reinforced concrete pipe, press down the top tray to make the fixed cutter head fully contact with the concrete inner wall, and lift the side handle forcefully to make the connection between the rotating rod and the fixed rod move away from the shaft rod, so that the fixed cutter head is in close contact with the inner wall of the reinforced concrete pipe to generate corresponding acting forces, making the device stuck in the reinforced concrete pipe. When the crane machinery lifts the reinforced concrete pipe through the lifting ring, the gravity of the reinforced concrete pipe is transmitted to the bottom tray and the top tray through the rotating rod and the fixed rod, and then to the shaft rod, making the device firmly stuck in the reinforced concrete pipe to complete the lifting work.

[0010] Preferably, both the bottom tray and the top tray are disc-shaped and of equal size, and the centers of the bottom tray and the top tray are on the same axis.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] Place the device into the reinforced concrete pipe, press down the top tray to make the fixed cutter head fully contact with the concrete inner wall, and lift the side handle forcefully to make the connection between the rotating rod and the fixed rod move away from the shaft rod, so that the fixed cutter head is in close contact with the inner wall of the reinforced concrete pipe to generate corresponding acting forces, making the device stuck in the reinforced concrete pipe. When the crane machinery lifts the reinforced concrete pipe through the lifting ring, the gravity of the reinforced concrete pipe is transmitted to the bottom tray and the top tray through the rotating rod and the fixed rod, and then to the shaft rod, making the device firmly stuck in the reinforced concrete pipe to complete the lifting work. When lifting the reinforced concrete pipe to the installation position, pull up the steel wire rope to lift the top tray upward. The connection between the rotating rod and the fixed rod approaches the shaft rod, and the fixed cutter head automatically contracts, thus separating from the inner wall of the reinforced concrete pipe, and the disassembly work can be realized. By clamping the lifting device into the inner wall of the reinforced concrete pipe instead of manual steel wire binding, the binding time is saved, effective lifting is realized, the lifting is simpler and more reliable, the risk of damage to the concrete pipe is reduced, thus ensuring the construction quality of the reinforced concrete pipe, reducing the installation workload, improving the installation efficiency, with simple composition, reduced cost, and being safe and applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0015] Please refer to Figure 1 , the present invention provides a technical solution: an easy-to-shrink small-diameter reinforced concrete pipe hoist, which includes a bottom tray 1 and a top tray 3 arranged above the bottom tray 1. A sleeve 12 is fixedly connected to the center position of the top tray 3, and a shaft rod 4 is fixedly connected to the center position of the bottom tray 1. The shaft rod 4 passes through the top tray 3 and the sleeve 12 from bottom to top. A plurality of fixed rods 8 are rotatably connected to the upper surface of the bottom tray 1 through a connecting seat 11, and a plurality of rotating rods 2 are rotatably connected to the lower surface of the top tray 3 through a connecting seat 11. The number of the fixed rods 8 and the rotating rods 2 is five and their positions correspond to each other. One end of the fixed rod 8 is rotatably connected to one end of the rotating rod 2. A fixed cutter head 81 is arranged at one end of the fixed rod 8 close to the inner wall of the concrete pipe. By clamping the hoist into the inner wall of the reinforced concrete pipe instead of manual wire binding, the binding time is saved, effective hoisting is achieved, the hoisting is simpler and more reliable, the risk of concrete pipe damage is reduced, thereby ensuring the construction quality of the reinforced concrete pipe, reducing the installation workload, improving the installation efficiency, and having a simple structure, reduced cost, and being safe and applicable.

[0016] Two fixing nuts 10 are symmetrically and fixedly connected to the upper surface of the top tray 3. Two rows of positioning nuts 9 are arranged along the length direction on the side wall of the shaft rod 4. The positions of the fixing nuts 10 and the positioning nuts 9 correspond to each other. Both ends of the steel wire rope 5 pass through the two rows of positioning nuts 9 from top to bottom and are fixed to the two fixing nuts 10 respectively. When the reinforced concrete pipe is hoisted to the installation position, the steel wire rope 5 is pulled up to lift the top tray 3. The connection part of the rotating rod 2 and the fixed rod 8 approaches the shaft rod 4, and the fixed cutter head 81 automatically contracts, thus separating from the inner wall of the reinforced concrete pipe, and the disassembly work can be realized.

[0017] On the side wall at the upper end of the shaft rod 4, two side handles 6 are symmetrically and fixedly connected. At the upper end of the side handle 6, a lifting ring 7 is fixedly connected. Place the device into the reinforced concrete pipe, press down the top tray 3 so that the fixed cutter head 81 is in full contact with the inner wall of the concrete. Lift the side handle 6 forcefully to make the connection between the rotating rod 2 and the fixed rod 8 move away from the shaft rod 4, so that the fixed cutter head 81 is in close contact with the inner wall of the reinforced concrete pipe to generate corresponding acting forces, causing the device to be stuck in the reinforced concrete pipe. When the crane machinery lifts the reinforced concrete pipe through the lifting ring 7, the gravity of the reinforced concrete pipe is transmitted to the bottom tray 1 and the top tray 3 through the rotating rod 2 and the fixed rod 8, and then to the shaft rod 4, making the device firmly stuck in the reinforced concrete pipe to complete the lifting work.

[0018] Both the bottom tray 1 and the top tray 3 are disc-shaped and of equal size. The centers of the bottom tray 1 and the top tray 3 are on the same axis.

[0019] Working principle: Place the device into the reinforced concrete pipe, press down the top tray 3 to make the top tray 3 and the bottom tray 1 approach each other, so that the fixed cutter head 81 is in full contact with the inner wall of the concrete. Lift the side handle 6 forcefully to make the connection between the rotating rod 2 and the fixed rod 8 move away from the shaft rod 4, so that the fixed cutter head 81 is in close contact with the inner wall of the reinforced concrete pipe to generate corresponding acting forces, causing the device to be stuck in the reinforced concrete pipe. When the crane machinery lifts the reinforced concrete pipe through the lifting ring 7, the gravity of the reinforced concrete pipe is transmitted to the bottom tray 1 and the top tray 3 through the rotating rod 2 and the fixed rod 8, and then to the shaft rod 4, making the device firmly stuck in the reinforced concrete pipe to complete the lifting work. When the reinforced concrete pipe is lifted to the installation position, pull up the steel wire rope 5 to lift the top tray 3 upward. The connection between the rotating rod 2 and the fixed rod 8 approaches the shaft rod 4, and the fixed cutter head 81 automatically retracts, thus separating from the inner wall of the reinforced concrete pipe, and the disassembly work can be realized. By using the hoisting device to be stuck into the inner wall of the reinforced concrete pipe instead of manual steel wire binding, the binding time is saved, effective hoisting is realized, the hoisting is simpler and more reliable, the risk of damage to the concrete pipe is reduced, thus ensuring the construction quality of the reinforced concrete pipe, reducing the installation workload, improving the installation efficiency, with simple composition, reduced cost, and being safe and applicable.

[0020] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lifting device for shrinkable small-diameter reinforced concrete pipes, characterized in that: It includes a bottom tray (1) and a top tray (3) arranged above the bottom tray (1). A sleeve (12) is fixedly connected to the center position of the top tray (3), and a shaft rod (4) is fixedly connected to the center position of the bottom tray (1). The shaft rod (4) passes through the top tray (3) and the sleeve (12) from bottom to top. Several fixed rods (8) are rotatably connected to the upper surface of the bottom tray (1) through connecting seats (11). Several rotating rods (2) are rotatably connected to the lower surface of the top tray (3) through connecting seats (11). The number and positions of the fixed rods (8) and the rotating rods (2) correspond. One end of the fixed rod (8) is rotatably connected to one end of the rotating rod (2). A fixed cutter head (81) is arranged at one end of the fixed rod (8) close to the inner wall of the concrete pipe.

2. The lifting device for a shrinkable small-diameter reinforced concrete pipe according to claim 1, characterized in that: Two fixing nuts (10) are symmetrically and fixedly connected to the upper surface of the top tray (3). Two rows of positioning nuts (9) are arranged on the side wall of the shaft rod (4) along the length direction. The positions of the fixing nuts (10) and the positioning nuts (9) correspond. Both ends of a steel wire rope (5) pass through the two rows of positioning nuts (9) from top to bottom and are fixed to the two fixing nuts (10).

3. The lifting device for a shrinkable small-diameter reinforced concrete pipe according to claim 1, wherein: Two side handles (6) are symmetrically and fixedly connected to the side wall at the upper end of the shaft rod (4). A lifting ring (7) is fixedly connected to the upper end of the side handle (6).

4. The lifting device for a shrinkable small-diameter reinforced concrete pipe according to claim 1, characterized in that: Both the bottom tray (1) and the top tray (3) are disc-shaped and of equal size. The centers of the bottom tray (1) and the top tray (3) are on the same axis.

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