Automatic tensioning and hoisting device

Abstract

The utility model discloses an automatic tensioning hoisting device, which comprises a connecting rod, a connecting ring, a support ring, a plurality of upper support rods, a plurality of lower support rods and a plurality of fixing gaskets, the connecting ring is fixed at the upper end of the connecting rod, the support ring is positioned below the connecting ring and is provided with a through hole for the connecting rod to pass through up and down, and the fixing gaskets are fixed at the lower end of the connecting rod. The supporting ring can move up and down relative to the connecting ring, the upper supporting rod is rotationally fixed between the connecting ring and the lower supporting rod, the lower supporting rod is rotationally fixed between the upper supporting rod and the supporting ring, the fixing gasket is fixed to the lower supporting rod, and when the connecting rod is pulled to move downwards, the supporting ring can move up and down relative to the connecting ring. According to the automatic tensioning and hoisting device, the pure mechanical structural design is adopted, the overall structure is greatly simplified, the portability and the transportation efficiency are improved, and the manufacturing difficulty and cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hoisting device, especially an automatic tensioning hoisting device. BACKGROUND

[0002] The current widely used internal expansion type hoisting device, its working principle is in close contact with the pile pipe inner wall through the body to the outside expansion, utilize the power generated by contact to realize the hoisting of pile pipe, in order to achieve this operation goal, the design idea is to configure 8 radial hydraulic cylinders in the hoisting device, these hydraulic cylinders extend outward in a radial pattern, this design means that multiple hydraulic cylinders need to be operated synchronously, not only increases the quantity demand of hydraulic cylinder, but also puts forward strict standards to the size of hydraulic cylinder, ensures that all 8 hydraulic cylinders can be smoothly built into the pile pipe.In addition, since the hoisting device directly depends on the force of each hydraulic cylinder, the system lacks an effective power amplification mechanism, so the hydraulic cylinder must be able to generate higher hydraulic pressure, which directly leads to the fact that the structural design of the hoisting device becomes extremely complex, a large amount of manpower and time need to be invested in the installation, maintenance and other aspects of the equipment, at the same time, the application environment of the hoisting device is also subject to many limitations, and it is not convenient to operate.

[0003] Therefore, it is necessary to design a new hoisting device to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a kind of automatic tensioning hoisting devices with simple structure and easy operation.

[0005] To achieve the foregoing object, the utility model adopts the following technical scheme: an automatic tensioning hoisting device, which comprises a connecting rod, a connecting ring, a supporting ring, a plurality of upper support rods, a plurality of lower support rods, and a plurality of fixing washers. The connecting ring is fixed to the upper end of the connecting rod. The supporting ring is located below the connecting ring and is provided with a through hole for the connecting rod to pass through. The supporting ring can move up and down relative to the connecting ring. The upper support rods are rotationally fixed between the connecting ring and the lower support rods. The lower support rods are rotationally fixed between the upper support rods and the supporting ring. The fixing washers are fixed to the lower support rods. When the connecting rod is subjected to a tensile force and moves downward, the lower support rods drive the fixing washers to move outward.

[0006] Further improvements also include a lifting ring fixed to the lower end of the connecting rod. The lifting ring is provided with a perforation for a cable to pass through.

[0007] Further improvements are that the fixing washers are rotationally fixed to the lower support rods.

[0008] Further improvements are that the inner side of the fixing washers is provided with a protrusion. The protrusion is rotationally fixed to the upper end of the lower support rods by bolts.

[0009] Further improvement, the upper support rods and the lower support rods are arranged uniformly along the same circumferential direction outside the connecting rods.

[0010] Further improvement, the connecting ring is circular, and a plurality of connecting plates are arranged uniformly on the outer periphery of the connecting ring, and the connecting plates are rotationally fixed to the upper ends of the upper support rods.

[0011] Further improvement, the lower support rods are rotationally fixed to the upper support rods at positions close to the fixing pads, and the positions are provided with protruding plates extending towards the inner side, and the protruding plates and the upper support rods are rotationally fixed together by bolts.

[0012] Further improvement, the support ring comprises an upper support ring and a lower support ring below the upper support ring, the diameter of the upper support ring is smaller than that of the lower support ring, the upper support ring is provided with an upper through hole, and the lower support ring is provided with a lower through hole aligned with the upper through hole in the up-down direction, and the connecting rods pass through the upper through hole and the lower through hole.

[0013] Further improvement, the lower support ring is provided with a plurality of vertical plates arranged vertically, the vertical plates are arranged uniformly and spaced apart on the upper surface of the lower support ring along the circumferential direction of the lower support ring, and the vertical plates and the lower support rods are rotationally fixed.

[0014] Further improvement, the support ring further comprises a plurality of connecting bridges connecting the upper support ring and the lower support ring, the connecting bridges are plate-shaped structures, and one of the connecting bridges is located between every two adjacent vertical plates.

[0015] The automatic tensioning hoisting device adopts a pure mechanical structure design, which not only greatly simplifies the overall structure, improves the portability and transportation efficiency, but also reduces the manufacturing difficulty and cost. In addition, the automatic tensioning hoisting device exhibits higher convenience in the installation and maintenance process, is widely applicable to various application scenarios, and enhances the practicality and flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a perspective view of the automatic tensioning hoisting device.

[0017] Fig. 2 It is a perspective exploded view of the automatic tensioning hoisting device.

[0018] Fig. 3 It is a perspective view of the support ring of the automatic tensioning hoisting device. DETAILED DESCRIPTION

[0019] Please refer to Figs. 1 to 3As shown, the utility model discloses an automatic tensioning hoisting device 100, it includes connecting rod 10, lifting ring 20, connecting ring 30, support ring 40, a plurality of upper support rod 50, a plurality of lower support rod 60 and a plurality of fixed gasket 70.

[0020] Connecting rod 10 is set up as the upright cylinder shape, lifting ring 20 is fixed in connecting rod 10 lower extreme, lifting ring 20 is provided with the perforation for the cable (not shown) to pass through.

[0021] Connecting ring 30 is fixed in connecting rod 10 upper extreme, connecting ring 30 is set up as the circle, and the outer periphery is provided with the even interval arrangement a plurality of connecting plate 32.

[0022] Support ring 40 is located in the below of connecting ring 30, can move up and down relative to connecting ring 30, support ring 40 is equipped with the through-hole for the up and down of connecting rod 10, support ring 40 includes upper support ring 41, the lower support ring 42 in the below of upper support ring 41 and the a plurality of connecting bridge 43 of connecting upper support ring 41 and lower support ring 42, and the diameter of upper support ring 41 is less than the diameter of lower support ring 42, and upper support ring 41 is equipped with upper through-hole 410, and lower support ring 42 is equipped with the lower through-hole 420 in the up and down alignment of upper through-hole 410 and the a plurality of vertical boards 422 around the lower through-hole 420, and connecting rod 10 passes through the upper through-hole 410 with the lower through-hole 420, and the a plurality of vertical boards 422 are set up upright, and are evenly spaced in the circumferential direction and are arranged on the upper surface of lower support ring 42. A plurality of connecting bridges 43 are in plate-like structure, and are obliquely arranged, and are also located between every adjacent two vertical boards 422.

[0023] Upper support rod 50 and lower support rod 60 equal in number and are rotatably connected one by one, wherein the upper end of upper support rod 50 is rotatably fixed with connecting plate 32 of connecting ring 30 through bolt 80, and the lower end is also rotatably fixed with corresponding lower support rod 60 through bolt 80; the upper end of lower support rod 60 is also rotatably fixed with fixed gasket 70 through bolt 80, and the lower end is also rotatably fixed with support ring 40 through bolt 80. Upper support rod 50 and lower support rod 60 are evenly arranged along the same circumferential direction. Lower support rod 60 is rotatably fixed with upper support rod 50 at the position close to fixed gasket 70, and a lug plate 62 extending towards the inside is arranged at the position, and the lug plate 62 and upper support rod 50 are rotatably fixed together through bolt 80.

[0024] The inside of each fixed gasket 70 is provided with a convex part 72, which is rotatably fixed with the upper end of lower support rod 60 through bolt 80. Fixed gasket 70 is used to tightly adhere to the inner wall of the equipment (not shown), so that the automatic tensioning hoisting device 100 is fixed in the equipment.

[0025] The working principle of the automatic tensioning hoisting device 100 is as follows: first, the automatic tensioning hoisting device 100 is placed in the equipment, and the upper support rod 50 and the lower support rod 60 are expanded by using its weight, and meanwhile each fixed gasket 70 is tightly attached to the inner wall of the equipment, so that the automatic tensioning hoisting device 100 is stably installed in the equipment. Then, the cable is passed through the lifting ring 20 and fixed on the force point, so as to exert a downward pulling force on the connecting rod 10, and the pulling force is transmitted to the upper support rod 50 and the lower support rod 60 through the connecting ring 30, so as to generate a force diffusing to the inner wall of the equipment, so as to make the fixed gasket 70 more firmly adhere to the inner wall of the equipment, and the greater the pulling force, the more reliable and firm the fixed connection between the automatic tensioning hoisting device 100 and the equipment. When the external pulling force is cancelled, the automatic tensioning hoisting device 100 returns to the initial state, and the automatic tensioning hoisting device 100 can be easily withdrawn from the equipment.

[0026] The automatic tensioning hoisting device 100 adopts a pure mechanical structure design, which not only greatly simplifies the overall structure, improves the portability and transportation efficiency, but also reduces the manufacturing difficulty and cost. In addition, the automatic tensioning hoisting device 100 exhibits higher convenience in the installation and maintenance process, is widely applicable to various application scenarios, and enhances the practicality and flexibility.

[0027] Although the preferred embodiments of the utility model have been disclosed for example purposes, those skilled in the art will realize that various improvements, additions and substitutions are possible without departing from the scope and spirit of the utility model disclosed by the appended claims.

Claims

1. An automatic tensioning hoisting device, characterized in that: It includes a connecting rod, a connecting ring, a support ring, several upper support rods, several lower support rods and several fixed gaskets, the connecting ring is fixed to the upper end of the connecting rod, the support ring is located below the connecting ring and is provided with a through hole for the connecting rod to pass through up and down, the support ring can move up and down relative to the connecting ring, the upper support rod is rotatably fixed between the connecting ring and the lower support rod, the lower support rod is rotatably fixed between the upper support rod and the support ring, the fixed gasket is fixed on the lower support rod, and when the connecting rod moves downward under tension, the lower support rod drives the fixed gasket to move outward.

2. The automatic tensioning hoisting device according to claim 1, characterized in that: It also includes a lifting ring fixed to the lower end of the connecting rod, and the lifting ring is provided with a through hole for the cable to pass through.

3. The automatic tensioning hoisting device according to claim 1, characterized in that: The fixing washer is rotationally fixed to the lower support rod.

4. The automatic tensioning hoisting device according to claim 3, characterized in that: A convex portion is provided on the inner side of the fixing gasket, and the convex portion is rotatably fixed to the upper end of the lower support rod through a bolt.

5. The automatic tensioning hoisting device according to claim 1, characterized in that: The upper support rod and the lower support rod are respectively and evenly arranged along the same circumferential direction on the outside of the connecting rod.

6. The automatic tensioning hoisting device according to claim 1, characterized in that: The connecting ring is arranged in a circular shape, and a plurality of connecting plates arranged at even intervals are arranged on the outer periphery. The connecting plates are rotatably fixed to the upper end of the upper support rod.

7. The automatic tensioning hoisting device according to claim 1, characterized in that: The lower support rod is rotatably fixed to the upper support rod at a position close to the fixing washer. A convex plate extending inward is provided at the position. The convex plate and the upper support rod are rotatably fixed together by bolts.

8. The automatic tensioning hoisting device according to claim 1, characterized in that: The support ring includes an upper support ring and a lower support ring located below the upper support ring. The diameter of the upper support ring is smaller than the diameter of the lower support ring. The upper support ring is provided with an upper through hole, and the lower support ring is provided with a lower through hole aligned with the upper through hole. The connecting rod passes through the upper through hole and the lower through hole.

9. The automatic tensioning hoisting device according to claim 8, characterized in that: The lower support ring is provided with a plurality of upright plates, which are evenly spaced and arranged on the upper surface of the lower support ring along the circumferential direction of the lower support ring. The upright plates and the lower support rod are rotatably fixed.

10. The automatic tensioning hoisting device according to claim 9, characterized in that: The support ring further includes a plurality of connecting bridges connecting the upper support ring and the lower support ring. The plurality of connecting bridges are plate-shaped structures and are located one by one between each two adjacent vertical plates.

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