Steel pipe telescopic lifting device

Abstract

This utility model discloses a steel pipe telescopic lifting device, comprising: a main lifting base, including a base; a cavity; lifting lugs disposed on the top of the base; at least one pair of telescopic arms symmetrically disposed at both ends of the base, and the at least one pair of telescopic arms being telescopically disposed within the cavity; at least one pair of snap-fit ​​structures symmetrically disposed at the outer ends of the at least one pair of telescopic arms; and at least one pair of drive cylinders symmetrically disposed at both ends of the lifting lugs, wherein the cylinder body of any drive cylinder is hinged to the base via a hinge seat I, and the piston rod of any drive cylinder is disposed on any telescopic arm disposed on the same side via a hinge seat II. Another objective of this utility model is to provide a steel pipe telescopic lifting device that can adapt to lifting steel pipes of different lengths, is safe and reliable to use, has high operational efficiency, reduces labor, saves materials, and lowers costs.

Description

Technical Field

[0001] This utility model relates to a steel pipe telescopic lifting device. Background Technology

[0002] In steel pipe handling and loading / unloading operations, lifting equipment is required to hoist the steel pipes. Existing lifting equipment suffers from poor adaptability, making it difficult to flexibly meet the lifting needs of steel pipes of different lengths and specifications. Furthermore, the steel pipes are prone to swaying and slipping during lifting, affecting operational safety and efficiency. Chinese Patent Application No. 202020811162.4 discloses a construction steel pipe hoisting device, including a lifting beam and steel pipe clamps at both ends of the beam. The lifting beam is a telescopic structure, with lifting lugs at both ends for securing wire ropes. The length of the lifting beam is adjustable, eliminating the need for multiple trial lifts to find the center of gravity when hoisting steel pipes of different lengths, saving hoisting time. However, the lifting beam structure still has some shortcomings. The telescopic rod is only fixed to the sleeve with bolts, resulting in poor connection stability. When the lifting weight is large or swaying occurs during hoisting, the telescopic rod is prone to relative displacement with the sleeve, even posing a risk of detachment, seriously affecting the safety of the hoisting operation. Meanwhile, when frequently adjusting the length of the telescopic boom to accommodate the lifting needs of different steel pipe lengths, manual adjustment is required, which is cumbersome, time-consuming, and labor-intensive, reducing work efficiency. Therefore, it is necessary to design a telescopic, adaptable, stable, and reliable steel pipe lifting device. Utility Model Content

[0003] One object of this invention is to solve at least the problems described above and to provide at least the advantages that will be explained later.

[0004] Another objective of this invention is to provide a steel pipe telescopic lifting device that can adapt to lifting steel pipes of different lengths, is safe and reliable to use, has high work efficiency, and reduces labor, materials, and costs.

[0005] To achieve these objectives and other advantages according to the present invention, a steel pipe telescopic lifting device is provided, comprising:

[0006] The main lifting base includes a base, which is a horizontally arranged balance beam; a cavity integrally formed inside the base; and a lifting lug located on the top of the base.

[0007] At least one pair of telescopic arms are symmetrically arranged at both ends of the base, and at least one pair of telescopic arms are telescopically arranged in the cavity;

[0008] At least one pair of snap-fit ​​structures are symmetrically arranged at the outer ends of at least one pair of telescopic arms; and

[0009] At least one pair of drive cylinders are symmetrically arranged at both ends of the lifting lug, and the cylinder body of any drive cylinder is hinged to the base through hinge seat I, and the piston rod of any drive cylinder is arranged on any telescopic arm arranged on the same side through hinge seat II.

[0010] Preferably, it also includes: a limiting protrusion I, which is axially disposed on the inner bottom surface of the cavity;

[0011] Guide groove I is axially disposed on the side wall of at least one pair of telescopic arms, and guide groove I is slidably disposed on the limiting protrusion.

[0012] Preferably, the maximum stroke of any one of the at least one pair of drive cylinders is less than the length of any one of the at least one pair of telescopic arms.

[0013] Preferably, it further includes: multiple reinforcing plates evenly spaced on both sides of the lifting lug and the base; and multiple reinforcing sleeves evenly spaced at both ends of the base.

[0014] Preferably, it also includes:

[0015] At least one pair of extension blocks are respectively disposed at one end of at least one pair of telescopic arms in the cavity, and the width of any one of the at least one pair of extension blocks is greater than the width of any one of the at least one pair of telescopic arms.

[0016] Guide groove II is axially arranged on the inner top surface of the cavity;

[0017] The limiting protrusion II is axially disposed on the top surface of at least one pair of extension blocks, and the limiting protrusion II is slidably disposed in the guide groove II.

[0018] Preferably, any one of the at least one pair of snap-fit ​​structures includes an L-shaped body, which includes a longitudinal arm and a transverse arm connected end to end, the upper end of the longitudinal arm is fixed to the outer end of any telescopic arm, and the length of the transverse arm is less than the maximum stroke of any drive cylinder.

[0019] A limiting block is set at the front end of the transverse arm, and the top surface of the limiting block is set at a height that is relatively higher than the top surface of the transverse arm.

[0020] A rubber pad is provided on the surface of the L-shaped main body and the limiting block, and the rubber pad is provided at the contact point between the L-shaped main body and the limiting block and the steel pipe.

[0021] This utility model has at least the following beneficial effects:

[0022] At least one pair of drive cylinders are installed to precisely control the extension and retraction of at least one pair of telescopic booms, adapting to the lifting of steel pipes of different lengths and specifications, improving the versatility of the lifting equipment, eliminating the need for manual adjustment of the length of at least one pair of telescopic booms, improving construction safety, and reducing labor costs; at least one pair of drive cylinders are hinged together through hinge seat I and hinge seat II, reducing motion interference and stress concentration, improving structural stability and service life; at least one pair of snap-fit ​​structures are installed at the outer ends of at least one pair of telescopic booms, which can be fitted onto both ends of the steel pipe, effectively limiting the swaying and slippage of the steel pipe, ensuring safe and stable lifting operations.

[0023] In summary, the steel pipe telescopic lifting device provided by this utility model can adapt to the lifting of steel pipes of different lengths, improve the stability of the steel pipe during the lifting process, and ensure safe and efficient operation. Furthermore, it reduces the labor intensity for workers, is safe and reliable to use, has high operational efficiency, is easy to manufacture, and reduces labor, materials, and costs.

[0024] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of the steel pipe telescopic lifting device according to one embodiment of the present utility model, wherein at least one pair of telescopic arms are in a telescopic state;

[0026] Figure 2 This is a schematic diagram of the steel pipe telescopic lifting device according to one embodiment of the present utility model, wherein at least one pair of telescopic arms are in the lifting state;

[0027] Figure 3 This is a structural schematic diagram of the cross-section of the base in one embodiment of the present invention, showing the limiting protrusion I and the guide groove I;

[0028] Figure 4 This is a structural schematic diagram of the steel pipe telescopic lifting device described in another embodiment of the present invention, showing multiple reinforcing plates and multiple reinforcing sleeves;

[0029] Figure 5 This is a schematic diagram of any telescopic arm and any snap-fit ​​structure connected thereto in another embodiment of the present invention;

[0030] Figure 6 This is a structural schematic diagram of the cross-section of the base described in another embodiment of the present invention, showing the limiting protrusion II and the guide groove II;

[0031] Figure 7 This is a schematic diagram of any telescopic arm and any snap-fit ​​structure connected to it in another embodiment of the present invention. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0033] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0034] like Figure 1 , 2 As shown, this utility model provides a steel pipe telescopic lifting device, comprising:

[0035] The main lifting base 1 includes a base 101, which is a horizontally arranged balance beam; a cavity integrally formed inside the base; lifting lugs 102, which are located on the top of the base; at least one pair of telescopic arms 2, which are symmetrically arranged at both ends of the base, and the at least one pair of telescopic arms are telescopically arranged inside the cavity; the main lifting base and at least one pair of telescopic arms are processed with appropriate steel according to the design dimensions and specifications to ensure structural strength; at least one pair of snap-fit ​​structures 3, which are symmetrically arranged at the outer ends of at least one pair of telescopic arms; and at least one pair of drive cylinders 4, which are symmetrically arranged at both ends of the lifting lugs, and the cylinder body of any drive cylinder is hinged to the base through a hinge seat I5, and the piston rod of any drive cylinder is set on any telescopic arm arranged on the same side through a hinge seat II6. In this solution, at least one pair of drive cylinders are used to precisely control the extension and retraction of at least one pair of telescopic booms, adapting to the lifting of steel pipes of different lengths and specifications, improving the versatility of the lifting equipment, eliminating the need for manual adjustment of the length of at least one pair of telescopic booms, improving construction safety, and reducing labor costs; at least one pair of drive cylinders are hinged together through hinge seat I and hinge seat II, reducing motion interference and stress concentration, and improving structural stability and service life; at least one pair of snap-fit ​​structures are provided at the outer ends of at least one pair of telescopic booms, which can be fitted onto both ends of the steel pipe, effectively limiting the swaying and slippage of the steel pipe, and ensuring safe and stable lifting operations.

[0036] Working principle: When it is necessary to lift steel pipes of different lengths, at least one pair of drive cylinders are controlled to extend and retract, which drives at least one pair of telescopic arms to slide along the main lifting base. The extension length of at least one pair of telescopic arms is adjusted so that at least one pair of clamping structures are adapted to the length of the steel pipe. The steel pipe is placed on at least one pair of clamping structures and fixed by at least one pair of drive cylinders, hinge seat I and hinge seat II. The lifting equipment lifts the steel pipe through the lifting lugs on the main lifting base to complete the steel pipe handling operation.

[0037] like Figure 3 As shown, in a preferred embodiment, it further includes: a limiting protrusion I 1021, which is axially disposed on the inner bottom surface of the cavity 103;

[0038] Guide groove I 201 is axially disposed on the side wall of at least one pair of telescopic arms, and guide groove I is slidably disposed on the limiting protrusion. In this design, the slidable fit between the limiting protrusion I and the guide groove I ensures the accuracy and stability of the movement of at least one pair of telescopic arms, reduces the risk of failure, extends service life, and achieves effective constraint of complex movements using a simple mechanical structure, thus balancing functionality and economy.

[0039] In a preferred embodiment, the maximum stroke of any one of the at least one pair of drive cylinders is less than the length of any one of the at least one pair of telescopic arms. This arrangement limits the stroke of the drive cylinder to less than the length of the at least one pair of telescopic arms, ensuring that the at least one pair of drive cylinders always operate within a safe stroke in any extended state of the at least one pair of telescopic arms, avoiding the risk of bending or breakage due to excessive extension of the piston rod, and extending the service life of the at least one pair of drive cylinders.

[0040] like Figure 4 As shown, in a preferred embodiment, the system further includes: multiple reinforcing plates 104 evenly spaced on both sides of the lifting lug and the base; and multiple reinforcing sleeves 105 evenly spaced at both ends of the base. The reinforcing plates ensure the reliability of the connection between the lifting lug and the base, and withstand longitudinal and lateral loads during lifting; the reinforcing sleeves ensure the fitting accuracy and durability of the base ends, extending the maintenance cycle of the components. The multiple reinforcing plates and sleeves are evenly spaced, ensuring the strengthening effect while avoiding increased weight or material waste due to excessive local thickness.

[0041] like Figure 5 , 6 As shown, in a preferred embodiment, the system further includes: at least one pair of extension blocks 7, each corresponding to one end of at least one pair of telescopic arms within the cavity, wherein the width of any one of the extension blocks is greater than the width of any one of the telescopic arms; a guide groove II, axially disposed on the inner top surface of the cavity; and a limiting protrusion II 701, axially disposed on the top surface of at least one pair of extension blocks, and slidably disposed within the guide groove II. The limiting protrusion II on the at least one pair of extension blocks cooperates with the guide groove II to further precisely limit the stable extension and retraction adjustment of the at least one pair of telescopic arms, strengthen the movable connection point of the at least one pair of telescopic arms, improve the stability of the overall mechanical structure, and ensure safe and stable lifting operations.

[0042] like Figure 7As shown, in a preferred embodiment, at least one of the at least one pair of snap-fit ​​structures includes an L-shaped main body 301, which includes a longitudinal arm and a transverse arm connected end-to-end. The upper end of the longitudinal arm is fixed to the outer end of any telescopic arm, and the length of the transverse arm is less than the maximum stroke of any drive cylinder. A limiting block 302 is disposed at the front end of the transverse arm, and the top surface of the limiting block is positioned higher than the top surface of the transverse arm. A rubber pad is disposed on the surfaces of the L-shaped main body and the limiting block, and is positioned at the contact points between the L-shaped main body, the limiting block, and the steel pipe. The at least one pair of snap-fit ​​structures is used to axially limit the steel pipe placed within the snap-fit ​​structure, preventing the steel pipe from slipping during lifting. The higher top surface of the limiting block compared to the top surface of the transverse arm allows for better restriction of the steel pipe's displacement during lifting, preventing the steel pipe from sliding or detaching along the direction of the longitudinal arm, thus improving the safety of the lifting operation. The rubber pads provide cushioning, reducing the probability of direct contact between the longitudinal arm and the limiting block and the steel pipe, thus preventing the steel pipe surface from being scratched or damaged by pressure. This is especially suitable for steel pipes with high surface quality requirements.

[0043] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A steel pipe telescopic lifting device, characterized in that, include: The main lifting base includes a base, which is a horizontally arranged balance beam; The cavity is integrally formed axially inside the base; Lifting lugs, which are set at the top of the base; At least one pair of telescopic arms are symmetrically arranged at both ends of the base, and at least one pair of telescopic arms are telescopically arranged in the cavity; At least one pair of snap-fit ​​structures are symmetrically arranged at the outer ends of at least one pair of telescopic arms; as well as At least one pair of drive cylinders are symmetrically arranged at both ends of the lifting lug, and the cylinder body of any drive cylinder is hinged to the base through hinge seat I, and the piston rod of any drive cylinder is arranged on any telescopic arm arranged on the same side through hinge seat II.

2. The steel pipe telescopic lifting device as described in claim 1, characterized in that, Also includes: Limiting protrusion I is axially positioned on the inner bottom surface of the cavity; Guide groove I is axially disposed on the side wall of at least one pair of telescopic arms, and guide groove I is slidably disposed on the limiting protrusion.

3. The steel pipe telescopic lifting device as described in claim 1, characterized in that, The maximum stroke of any one of the at least one pair of drive cylinders is less than the length of any one of the at least one pair of telescopic arms.

4. The steel pipe telescopic lifting device as described in claim 1, characterized in that, Also includes: Multiple reinforcing plates are evenly spaced and installed on both sides of the lifting lugs and the base; Multiple reinforcing sleeves are evenly spaced and fitted at both ends of the base.

5. The steel pipe telescopic lifting device as described in claim 2, characterized in that, Also includes: At least one pair of extension blocks are respectively disposed at one end of at least one pair of telescopic arms in the cavity, and the width of any one of the at least one pair of extension blocks is greater than the width of any one of the at least one pair of telescopic arms. Guide groove II is axially arranged on the inner top surface of the cavity; The limiting protrusion II is axially disposed on the top surface of at least one pair of extension blocks, and the limiting protrusion II is slidably disposed in the guide groove II.

6. The steel pipe telescopic lifting device as described in claim 1, characterized in that, At least one of the snap-fit ​​structures includes an L-shaped body, which includes a longitudinal arm and a transverse arm connected end to end. The upper end of the longitudinal arm is fixed to the outer end of any telescopic arm, and the length of the transverse arm is less than the maximum stroke of any drive cylinder. A limiting block is set at the front end of the transverse arm, and the setting height of the top surface of the limiting block is relatively higher than the setting height of the top surface of the transverse arm. A rubber pad is provided on the surface of the L-shaped main body and the limiting block, and the rubber pad is provided at the contact point between the L-shaped main body and the limiting block and the steel pipe.

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