Telescopic hoisting device

Abstract

The utility model discloses a telescopic hoisting device which is characterized in that the hoisting device comprises a rectangular supporting frame, the supporting frame is composed of four horizontal adjusting pipes (1) which are fixedly connected, each horizontal adjusting pipe (1) comprises an outer sleeve (2), an inner adjusting pipe (3) is movably connected in the outer sleeve (2), and the inner adjusting pipe (3) is fixedly connected with the outer sleeve (2). The free end of the inner adjusting pipe (3) is provided with a horizontally-distributed connecting piece (4), the top end face of the outer sleeve (2) is provided with a long groove (5) distributed in the axial direction of the outer sleeve (2), the end, away from the connecting piece (4), of the inner adjusting pipe (3) is provided with a threaded inner hole (6), the threaded inner hole (6) is internally in threaded connection with a fixing bolt (7), and the bottom end of the fixing bolt (7) can make contact with the inner wall of the outer sleeve (2). Meanwhile, the top of the fixing bolt (7) is movably connected into the long groove (5).

Description

Technical Field

[0001] The utility model relates to the field of material transfer, in particular to a telescopic lifting device. Background Art

[0002] In the industrial production process, it is sometimes necessary to lift larger materials or equipment to a certain height for corresponding operations. The traditional method is to use a lifting device such as an overhead crane for lifting. However, traditional lifting equipment is bulky and requires a large site and space. At the same time, due to its relatively high cost, it can only be set up in a factory building. If the items to be lifted are located in an open-air environment, large mechanical equipment such as cranes and forklifts can only be used for operation, which still has cost issues.

[0003] If manual handling is adopted, a large amount of manpower will be consumed and there will be certain safety risks.

[0004] Moreover, in some relatively small spaces, there are certain difficulties in both mechanical equipment and manpower handling.

[0005] Therefore, a method or device that can solve the above problems is needed. Summary of the Invention

[0006] The utility model aims to solve the above-mentioned deficiencies in the prior art and proposes a telescopic lifting device with a simple structure, ingenious design, reasonable layout, wide applicability, and the ability to adjust the space it occupies as needed to adapt to the size of the workpiece to be lifted.

[0007] The technical solution of the utility model is: a telescopic lifting device, characterized in that: the lifting device includes a rectangular support frame, the support frame is composed of four fixedly connected horizontal adjustment tubes 1, the horizontal adjustment tube 1 includes an outer sleeve 2, an inner adjustment tube 3 is movably connected inside the outer sleeve 2, and the free end of the inner adjustment tube 3 is provided with a horizontally distributed connecting piece 4,

[0008] A long groove 5 is provided on the top surface of the outer sleeve 2 and is distributed along its axial direction. A threaded inner hole 6 is provided at the end of the inner adjustment tube 3 away from the connecting piece 4. A fixing bolt 7 is connected to the threaded inner hole 6. The bottom end of the fixing bolt 7 can contact the inner wall of the outer sleeve 2, and the top of the fixing bolt 7 is movably connected in the long groove 5.

[0009] The lifting device also includes four longitudinal adjustment legs 8, each of which includes a bottom support sleeve 9, an adjustment spindle 10 rotatably connected inside the bottom support sleeve 9, an adjustment handle 11 is provided in the middle of the adjustment spindle 10, and the external thread section of the upper portion is threadedly connected to the lower portion of the upper sleeve 12, and a plurality of limit mechanisms 13 are provided on the upper portion of the upper sleeve 12 at equal intervals in the longitudinal direction.

[0010] The limiting mechanism 13 includes a steel ball 14, which is movably connected in a radial groove 15. The opening diameter of the radial groove 15 is smaller than the outer diameter of the steel ball 14. The radial groove 15 is opened in the upper sleeve 12 and distributed along the radial direction of the upper sleeve 12. A spring 16 is also provided in the radial groove 15.

[0011] A connecting hole 17 is provided at the center of the connecting piece 4. A positioning hole 18 matching the steel ball 14 is provided on the inner wall of the connecting hole 17. The positioning hole 18 passes through the side wall of the connecting piece 4.

[0012] The inner wall of the horizontal adjustment tube 1 is provided with a support piece 19, and the four support pieces 19 are connected to the support platform 20. The middle of the support platform 20 is provided with an operation hole 21, and the support platform 20 supports a winding and hoisting mechanism 22.

[0013] The winding and hoisting mechanism 22 includes a base plate 23, on which a support shell 24 is provided, and a rotating shaft is rotatably supported in the support shell 24, and a sling 25 is connected to the rotating shaft, and a hook 26 is provided at the bottom end of the sling 25, and a connecting rod 27 perpendicular to it is provided at one end of the rotating shaft, and a winding handle 28 is provided at the end of the connecting rod 27, and a rotating shaft limiting hole 29 is provided on the connecting rod 27, and a plurality of supporting shell limiting holes 30 evenly distributed in the circumferential direction are provided on the end face of the supporting shell 24 facing the connecting rod 27, and the rotating shaft limiting hole 29 can be in a coaxial state with any one of the supporting shell limiting holes 30, and a rotating shaft limiting pin 31 is provided to match the rotating shaft limiting hole 29.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] This type of telescopic lifting device has a simple structure, ingenious design, and reasonable layout. It is designed to solve the problems of traditional lifting equipment, such as bulky size and high cost, by adopting a special structure. Its main part consists of a rectangular support frame and four longitudinal legs distributed at the four corners of the support frame. The support frame is composed of four retractable sleeve structures, so the size of the support frame can be adjusted as needed, and the longitudinal legs have the function of adjusting the height, that is, the height of the support frame can also be adjusted as needed. It has a very low requirement for the occupied space and can be built in a relatively small space to achieve the lifting of materials, thus solving the problem of the limitations of traditional large-scale lifting equipment. In addition, its manufacturing process is simple and the manufacturing cost is low. Therefore, it can be said that it has many advantages and is particularly suitable for promotion and application in this field. Its market prospects are very broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 1 is a top view of an embodiment of the present invention (state 1).

[0018] Figure 3 It is a top view of an embodiment of the present utility model (state 2).

[0019] Figure 4 It is a structural schematic diagram of the horizontal adjustment pipe part in an embodiment of the utility model.

[0020] Figure 5 It is a structural diagram of the winding and hoisting mechanism part in an embodiment of the utility model.

[0021] Figure 6 It is a top view of the support frame portion in an embodiment of the present utility model.

[0022] Figure 7 It is a structural schematic diagram of the support platform part in the embodiment of the present utility model.

[0023] Figure 8 It is a structural diagram of the longitudinal adjustment leg portion in an embodiment of the present utility model.

[0024] Figure 9 yes Figure 8 Enlarged view of part A in . DETAILED DESCRIPTION

[0025] The specific implementation of the present invention will be described below with reference to the accompanying drawings. Figures 1 to 8The figure shows a telescopic lifting device, which includes a rectangular support frame, which is composed of four fixedly connected horizontal adjustment tubes 1. The horizontal adjustment tube 1 includes an outer sleeve 2, and an inner adjustment tube 3 is movably connected inside the outer sleeve 2. The free end of the inner adjustment tube 3 is provided with a horizontally distributed connecting piece 4.

[0026] A long groove 5 is provided on the top surface of the outer sleeve 2 and is distributed along its axial direction. A threaded inner hole 6 is provided at the end of the inner adjustment tube 3 away from the connecting piece 4. A fixing bolt 7 is connected to the threaded inner hole 6. The bottom end of the fixing bolt 7 can contact the inner wall of the outer sleeve 2, and the top of the fixing bolt 7 is movably connected in the long groove 5.

[0027] The lifting device also includes four longitudinal adjustment legs 8, each of which includes a bottom support sleeve 9, an adjustment spindle 10 rotatably connected inside the bottom support sleeve 9, an adjustment handle 11 is provided in the middle of the adjustment spindle 10, and the external thread section of the upper portion is threadedly connected to the lower portion of the upper sleeve 12, and a plurality of limit mechanisms 13 are provided on the upper portion of the upper sleeve 12 at equal intervals in the longitudinal direction.

[0028] The limiting mechanism 13 includes a steel ball 14, which is movably connected in a radial groove 15. The opening diameter of the radial groove 15 is smaller than the outer diameter of the steel ball 14. The radial groove 15 is opened in the upper sleeve 12 and distributed along the radial direction of the upper sleeve 12. A spring 16 is also provided in the radial groove 15.

[0029] A connecting hole 17 is provided at the center of the connecting piece 4. A positioning hole 18 matching the steel ball 14 is provided on the inner wall of the connecting hole 17. The positioning hole 18 passes through the side wall of the connecting piece 4.

[0030] The inner wall of the horizontal adjustment tube 1 is provided with a support piece 19, and the four support pieces 19 are connected to the support platform 20. The middle of the support platform 20 is provided with an operation hole 21, and the support platform 20 supports a winding and hoisting mechanism 22.

[0031] The winding and hoisting mechanism 22 includes a base plate 23, on which a support shell 24 is provided, and a rotating shaft is rotatably supported in the support shell 24, and a sling 25 is connected to the rotating shaft, and a hook 26 is provided at the bottom end of the sling 25, and a connecting rod 27 perpendicular to it is provided at one end of the rotating shaft, and a winding handle 28 is provided at the end of the connecting rod 27, and a rotating shaft limiting hole 29 is provided on the connecting rod 27, and a plurality of supporting shell limiting holes 30 evenly distributed in the circumferential direction are provided on the end face of the supporting shell 24 facing the connecting rod 27, and the rotating shaft limiting hole 29 can be in a coaxial state with any one of the supporting shell limiting holes 30, and a rotating shaft limiting pin 31 is provided to match the rotating shaft limiting hole 29.

[0032] The working process of the telescopic lifting device of the embodiment of the present utility model is as follows: the device is directly set up at the material or equipment to be lifted. During the setting process, the device can be adjusted according to the size (length, width, height) of the target object. By adjusting the length of the horizontal adjustment tube 1, the size of the support frame can be changed. By adjusting the longitudinal adjustment legs 8, the height of the support frame can be changed to ensure that the target object can be lifted smoothly.

[0033] The target object is fixed with a binding rope connected to the hook 26, and then the operator holds the reeling handle 28 to drive the rotating shaft to rotate, and the rotating shaft reels the sling 25, thereby lifting the target object to a certain height; when the target object rises to a suitable height, the rotation angle of the rotating shaft is fine-tuned to move the rotating shaft limiting hole 29 on the connecting rod 27 to the nearest supporting shell limiting hole 30, and the rotating shaft limiting pin 31 is taken and inserted into the rotating shaft limiting hole 29 and the supporting shell limiting hole 30, that is, the rotating shaft limiting pin 31 is used to position the reeling and hoisting mechanism 22;

[0034] The number of the support shell limiting holes 30 evenly distributed in the circumferential direction determines the degree of subdivision of the target object's stopping height. 12 holes, 18 holes, 36 holes, etc. can be selected. The specific number can be set according to actual needs to determine the accuracy of the target object's stopping height.

[0035] When the overall length of the horizontal adjustment tube 1 needs to be changed, the inner adjustment tube 3 can be pushed (or pulled) to make it move relative to the outer sleeve 2. During the above process, the fixing bolt 7 slides in the long groove 5 on the top surface of the outer sleeve 2. When the appropriate length is adjusted, the fixing bolt 7 is tightened. The end of the fixing bolt 7 is pressed against the inner wall of the outer sleeve 2. At this time, the outer sleeve 2 and the inner adjustment tube 3 are relatively fixed, and the length adjustment of the horizontal adjustment tube 1 is completed.

[0036] When the overall length of the longitudinal adjustment leg 8 needs to be changed, the upper sleeve 12 can be pushed (or pulled) to cause relative movement between it and the connecting piece 4, so that a part of the steel balls 14 in the limit mechanisms 13 at different heights are embedded in the positioning holes 18 on the inner wall of the connecting hole 17 to achieve positioning and support. It should be noted that in order to be able to support the support frame, all mechanisms thereon and the objects being hoisted, the spring 16 pushes the steel balls 14 from the inside, thereby ensuring that the steel balls 14 can withstand sufficient shear stress; therefore, when relative movement between the upper sleeve 12 and the connecting piece 4 is required, the operator needs to hold a tool (such as a screwdriver, etc.), insert the tool into the through positioning hole 18, and use the tool to push the steel ball 14 inward. Only after the steel ball 14 is displaced toward the central axis of the longitudinal adjustment leg 8 can the upper sleeve 12 and the connecting piece 4 move relative to each other;

[0037] The above method can quickly change the length of the longitudinal adjustment leg 8, which is a rough adjustment;

[0038] If it is necessary to make a small and precise adjustment to the longitudinal adjustment leg 8, the adjustment handle 11 can be used to drive the adjustment core shaft 10 to rotate while the bottom support sleeve 9 is fixed. At this time, the adjustment core shaft 10 rotates relative to the bottom support sleeve 9 and relative to the upper sleeve 12. Since the adjustment core shaft 10 and the upper sleeve 12 are threadedly connected, the upper sleeve 12 will make axial movement relative to the adjustment core shaft 10, thereby achieving precise adjustment of the longitudinal adjustment leg 8.

[0039] That is to say, before constructing the hoisting device, the user first adjusts the device according to the volume of the product to be hoisted, so that it adapts to the volume of the product.

Claims

1. A telescopic lifting device, characterized in that: The hoisting device comprises a rectangular support frame, the support frame is composed of four fixedly connected horizontal adjustment tubes (1), the horizontal adjustment tube (1) comprises an outer sleeve (2), an inner adjustment tube (3) is movably connected inside the outer sleeve (2), and the free end of the inner adjustment tube (3) is provided with a horizontally distributed connecting piece (4). The top surface of the outer sleeve (2) is provided with a long groove (5) distributed along its axial direction, and a threaded inner hole (6) is provided at one end of the inner adjustment tube (3) away from the connecting piece (4). The threaded inner hole (6) is connected to a fixing bolt (7) through the inner thread, and the bottom end of the fixing bolt (7) can contact the inner wall of the outer sleeve (2), and the top of the fixing bolt (7) is movably connected in the long groove (5). The hoisting device further comprises four longitudinal adjustment legs (8), the longitudinal adjustment legs (8) comprising a bottom support sleeve (9), an adjustment core shaft (10) being rotatably connected in the bottom support sleeve (9), an adjustment handle (11) being provided in the middle of the adjustment core shaft (10), an external thread section of the upper portion of which is threadedly connected to the lower portion of an upper sleeve (12), and a plurality of limiting mechanisms (13) being distributed at equal intervals in the longitudinal direction being provided on the upper portion of the upper sleeve (12). The limiting mechanism (13) includes a steel ball (14), the steel ball (14) is movably connected in the radial groove (15), and the opening diameter of the radial groove (15) is smaller than the outer diameter of the steel ball (14), the radial groove (15) is opened in the upper sleeve (12) and distributed along the radial direction of the upper sleeve (12), and a spring (16) is also provided in the radial groove (15). A connecting hole (17) is provided at the center of the connecting piece (4), a positioning hole (18) matching the steel ball (14) is provided on the inner wall of the connecting hole (17), and the positioning hole (18) passes through the side wall of the connecting piece (4). A support sheet (19) is provided on the inner side wall of the horizontal adjustment tube (1), and the four support sheets (19) are connected to the support platform (20). An operation hole (21) is provided in the middle of the support platform (20), and a winding and hoisting mechanism (22) is supported on the support platform (20). The winding and hoisting mechanism (22) includes a base plate (23), a support shell (24) is provided on the base plate (23), a rotating shaft is rotatably supported in the support shell (24), a sling (25) is connected to the rotating shaft, a hook (26) is provided at the bottom end of the sling (25), a connecting rod (27) perpendicular to the rotating shaft is provided at one end of the rotating shaft, a winding handle (28) is provided at the end of the connecting rod (27), a rotating shaft limiting hole (29) is provided on the connecting rod (27), and a plurality of supporting shell limiting holes (30) uniformly distributed in the circumferential direction are provided on the end face of the supporting shell (24) facing the connecting rod (27), and the rotating shaft limiting hole (29) can be in a coaxial state with any supporting shell limiting hole (30), and a rotating shaft limiting pin (31) is provided to match the rotating shaft limiting hole (29).

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