Adjustable lifting device

Abstract

The utility model belongs to the technical field of hoisting equipment, and provides an adjustable hoisting device which comprises a cross beam, an electric hoist is mounted on the cross beam in a sliding manner, stand columns are symmetrically arranged at the two ends of the cross beam in the length direction, the bottom ends of the stand columns are fixedly connected with bases, and the length direction of the bases is perpendicular to the length direction of the cross beam; two storage grooves are formed in the bottom face of the base and are close to the two ends of the base respectively, first threaded rods are in threaded connection with the interiors of the storage grooves correspondingly, the axis direction of the first threaded rods is perpendicular to the ground, wheel covers are fixedly arranged at the ends, located in the storage grooves, of the first threaded rods, and wheels are rotationally installed in the wheel covers. The other end of the first threaded rod penetrates through the storage groove, extends to the top of the base and is fixedly connected with a first handle. During lifting, the wheels are contained in the containing grooves, the base makes direct contact with the ground, stability is good, and the bearing capacity is high; and when moving is needed, the first threaded rod is rotated to push out the wheels, the structure is simple, the failure rate is low, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically to an adjustable lifting device. Background Technology

[0002] Lifting equipment is mainly used for hoisting and moving objects, and common types include cranes, bridge cranes, and gantry cranes. Gantry cranes also include small mobile gantry cranes, which are often used for hoisting applications with medium to low loads.

[0003] Existing mobile gantry cranes typically use wheels for movement. The problems with this are: wheels have poor stability, making them prone to shifting and causing danger during lifting operations; and wheels have limited load-bearing capacity, making them susceptible to damage due to excessive load. Utility Model Content

[0004] In view of the deficiencies in the existing technology, this utility model provides an adjustable lifting device to improve the stability and load-bearing capacity of a mobile gantry crane.

[0005] The present invention provides an adjustable lifting device, including a crossbeam, on which an electric hoist is slidably mounted, and columns are symmetrically arranged at both ends of the crossbeam along its length. The bottom ends of the columns are all fixedly connected to a base, and the length direction of the base is perpendicular to the length direction of the crossbeam.

[0006] The base has two storage slots on its bottom surface, which are located near the two ends of the base. Each storage slot is threaded with a first threaded rod, the axis of which is perpendicular to the ground. One end of the first threaded rod located in the storage slot is fixedly equipped with a wheel cover, and a wheel is rotatably installed in the wheel cover. The other end of the first threaded rod passes through the storage slot, extends to the top of the base, and is fixedly connected with a first handle.

[0007] As can be seen from the above technical solution, when lifting, the wheel is stored in the storage groove and the base directly contacts the ground, which has good stability and strong load-bearing capacity; when it needs to be moved, the first threaded rod is rotated to push out the wheel. The structure is simple, the failure rate is low, and it is easy to use.

[0008] Furthermore, the top surface of the base has two threaded through holes extending to the bottom surface. The two threaded through holes are located near both ends of the base. Each threaded through hole is threaded with a second threaded rod, and a second handle is fixed to the top of the second threaded rod.

[0009] The beneficial effect of adopting the above-mentioned further solution is that when the base is placed on an uneven area, the base can be balanced by adjusting the extension length of any second threaded rod.

[0010] Furthermore, the storage groove is circular, and the inner diameter of the storage groove is larger than the outer diameter of the wheel cover.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the wheel cover can rotate in the storage slot, making it more convenient to store the wheel cover.

[0012] Furthermore, a number of reinforcing ribs are provided between the column and the base.

[0013] The beneficial effect of adopting the above-mentioned further solutions is to improve the overall structural strength.

[0014] Furthermore, the wheel is made of polyurethane or rubber.

[0015] The advantages of adopting the above-mentioned further solutions are: better buffering effect and applicability to different ground surfaces.

[0016] Furthermore, the first threaded rod is provided with a scale.

[0017] The beneficial effect of adopting the above-mentioned further solution is that it helps operators identify whether the relative heights of the wheels are consistent, thereby improving adjustment efficiency. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the description of the specific embodiments or prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a front view of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a schematic diagram of the storage slot of this utility model;

[0021] Figure 3 This is a schematic diagram of the base of this utility model.

[0022] Figure label:

[0023] 1. Crossbeam; 2. Electric hoist; 3. Column; 4. Base; 5. Storage slot; 6. First threaded rod; 7. Wheel cover; 8. Wheel; 9. First handle; 10. Second threaded rod; 11. Second handle; 12. Reinforcing rib. Detailed Implementation

[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0025] Example 1

[0026] like Figures 1 to 3 As shown, an adjustable lifting device includes a crossbeam 1, an electric hoist 2 is slidably mounted on the crossbeam 1, columns 3 are symmetrically arranged at both ends of the crossbeam 1 along its length, and a base 4 is fixedly connected to the bottom end of each column 3. The length direction of the base 4 is perpendicular to the length direction of the crossbeam 1.

[0027] The base 4 has two storage slots 5 on its bottom surface. The two storage slots 5 are respectively close to the two ends of the base 4. Each storage slot 5 is threaded with a first threaded rod 6. The axis of the first threaded rod 6 is perpendicular to the ground. One end of the first threaded rod 6 located in the storage slot 5 is fixedly provided with a wheel cover 7. A wheel 8 is rotatably installed in the wheel cover 7. The other end of the first threaded rod 6 passes through the storage slot 5, extends to the top of the base 4, and is fixedly connected with a first handle 9.

[0028] In this embodiment, the electric hoist 2 used for lifting is existing technology and will not be described in detail here.

[0029] This utility model has two usage states: lifting state and moving state.

[0030] The four wheels 8 are located at the four corners of the lifting device. When lifting is required, the first handle 9 is rotated. The first handle 9 drives the first threaded rod 6 to rotate and move upward, so that the four wheel covers 7 and the wheels 8 are stored in the storage groove 5. The base 4 can directly contact the ground to form a stable support with good stability and strong load-bearing capacity.

[0031] When the lifting device needs to be moved, the first handle 9 is turned in the opposite direction, and the first threaded rod 6 pushes the wheel cover 7 to move downward until the wheel 8 extends out of the storage groove 5. After the four wheels 8 lift the base 4 into the air, the lifting device can be moved.

[0032] The base 4 does not need to be laid down when pushing out and putting away the wheel 8, making the operation simple. Furthermore, rotating the first threaded rod 6 allows the wheel 8 to face any direction of movement, making it more flexible in its movement.

[0033] Example 2

[0034] like Figures 2 to 3 As shown, preferably, based on embodiment 1, the top surface of the base 4 has two threaded through holes extending to the bottom surface. The two threaded through holes are respectively close to both ends of the base 4. A second threaded rod 10 is threadedly connected to each of the threaded through holes, and a second handle 11 is fixedly connected to the top end of the second threaded rod 10.

[0035] In this embodiment, the four second threaded rods 10 are located at the four corners of the lifting device. When one side of the base 4 is placed on an uneven area, the second threaded rod 10 at that location is rotated. The second threaded rod 10 moves downward while rotating. The bottom end of the second threaded rod 10 extends from the bottom surface of the base 4 and replaces that side of the base 4 in contact with the ground, so that the base 4 tends to be balanced.

[0036] When a wheel 8 on one side is damaged and needs to be replaced, rotate the nearest second threaded rod 10. The second threaded rod 10 extends from the bottom surface of the base 4, so that the wheel 8 at that point is suspended in the air, and then the replacement operation can be carried out.

[0037] In this embodiment, a contact block is fixed to the end of the second threaded rod 10 facing the ground. This increases the contact area at the end of the second threaded rod 10 and reduces the pressure.

[0038] Example 3

[0039] like Figures 1 to 3 As shown, preferably, based on embodiments 1-2, the storage groove 5 is circular, and the inner diameter of the storage groove 5 is larger than the outer diameter of the wheel cover 7.

[0040] The first threaded rod 6 is provided with a scale.

[0041] In this embodiment, the storage groove 5 adopts a circular design, and the first threaded rod 6 is coaxial with the storage groove 5. When the wheel cover 7 rotates and moves up and down with the first threaded rod 6, it will not touch the inner wall of the storage groove 5.

[0042] The first threaded rod 6 is equipped with a scale, which makes it easy for the operator to observe its position and helps the operator identify whether the relative heights of the four wheels 8 are consistent.

[0043] Based on this embodiment, the scale can be numerical or in units of 5cm, with each segment dyed a different color for differentiation.

[0044] Example 4

[0045] like Figures 1 to 3 As shown, preferably, based on embodiments 1-3, a plurality of reinforcing ribs 12 are provided between the column 3 and the base 4.

[0046] The wheel 8 is made of polyurethane or rubber.

[0047] In this embodiment, reinforcing rib 12 is used to improve the overall structural strength and facilitate lifting.

[0048] In addition, the wheels are made of polyurethane or rubber, which provides better cushioning and is suitable for different ground surfaces.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A regulated hoisting device, characterized in that, It includes a crossbeam (1), on which an electric hoist (2) is slidably mounted. Columns (3) are symmetrically arranged at both ends of the crossbeam (1) along its length. Bases (4) are fixedly connected to the bottom ends of the columns (3). The length direction of the bases (4) is perpendicular to the length direction of the crossbeam (1). The base (4) has two storage slots (5) on its bottom surface. The two storage slots (5) are located near the two ends of the base (4). Each storage slot (5) is threaded with a first threaded rod (6). The axis of the first threaded rod (6) is perpendicular to the ground. One end of the first threaded rod (6) located in the storage slot (5) is fixedly provided with a wheel cover (7). A wheel (8) is rotatably installed in the wheel cover (7). The other end of the first threaded rod (6) passes through the storage slot (5) and extends to the top of the base (4) and is fixedly connected with a first handle (9).

2. An adjustable lifting device according to claim 1, wherein, The base (4) has two threaded through holes on its top surface that extend to the bottom surface. The two threaded through holes are located near the two ends of the base (4). A second threaded rod (10) is threaded into each of the threaded through holes. A second handle (11) is fixed to the top of the second threaded rod (10).

3. An adjustable lifting device as claimed in claim 1, characterised in that The storage groove (5) is circular, and the inner diameter of the storage groove (5) is larger than the outer diameter of the wheel cover (7).

4. An adjustable lifting device as claimed in claim 1, characterised in that Several reinforcing ribs (12) are provided between the column (3) and the base (4).

5. The adjustable lifting device according to claim 1, characterized in that, The wheel (8) is made of polyurethane or rubber.

6. A variable lift hoist as claimed in any one of claims 1 to 5, wherein, The first threaded rod (6) is provided with a scale.

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