A lifting device

Abstract

This utility model relates to the field of lifting device technology, specifically disclosing a lifting device including a cylindrical base with a receiving cavity and an open top. A lifting slider that can move up and down is installed inside the receiving cavity of the cylindrical base. A universal ball is rolled on the top side of the lifting slider, with its top protruding beyond the top surface of the lifting slider. A screw hole is provided at the bottom of the lifting slider, and a screw rod is threaded into the screw hole. A drive handle is oscillatingly mounted on the cylindrical base, and the drive handle is connected to the screw rod. The drive handle oscillates back and forth to drive the screw rod to rotate in both directions, thereby causing the lifting slider to move up and down. This utility model can lift large equipment to adjust its height. Because the universal ball is rolled, its horizontal position can be adjusted by pushing the large equipment. This adjustment operation is easier and more convenient, easier to control, and allows for precise adjustment, thereby improving the installation accuracy and efficiency of large equipment.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, and specifically to a lifting device. Background Technology

[0002] When installing large equipment such as centrifugal pumps and their motors, it is often necessary to adjust the height and level of the equipment to meet the installation requirements. Since large equipment weighs 4-5 tons, it is very difficult to make minor adjustments of about 1-10cm by sliding, and it is difficult to control when using a crane, resulting in low installation accuracy and efficiency for large equipment. Utility Model Content

[0003] The present invention aims to provide a lifting device to solve the aforementioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a lifting device includes a cylindrical base with a receiving cavity and an open top. A lifting slider that can move up and down is installed in the receiving cavity of the cylindrical base. A universal ball is rolled on the top side of the lifting slider. The top of the universal ball protrudes from the top surface of the lifting slider. A screw hole is provided at the bottom of the lifting slider. A screw rod is threaded into the screw hole. A drive handle is oscillating on the cylindrical base. The drive handle is connected to the screw rod in a transmission connection. The drive handle oscillates back and forth to drive the screw rod to rotate in both directions, thereby driving the lifting slider to move up and down.

[0005] Preferably, the drive handle includes a transmission component that extends through the side wall of the cylinder seat and a handle that is fixedly installed on the outer end of the transmission component, and the inner end of the transmission component is connected to the screw drive.

[0006] Preferably, the transmission component includes a transmission rod horizontally disposed through the side wall of the cylinder seat and a first bevel gear fixedly installed on the inner end of the transmission rod, a handle fixedly installed on the outer end of the transmission rod, and a second bevel gear disposed at the bottom of the screw. The first bevel gear and the second bevel gear are perpendicularly meshed and connected for transmission.

[0007] Preferably, a planar thrust bearing is installed on the inner bottom wall of the cylinder base, and the bottom end of the second bevel gear is connected to the planar thrust bearing.

[0008] Preferably, a clearance space is provided at the bottom of the lifting slider above the first bevel gear.

[0009] Preferably, an annular limiting step is provided on the peripheral cavity wall of the receiving cavity, and an annular blocking step is formed on the circumference of the lifting slider, and the blocking step and the limiting step are mutually blocking and limiting.

[0010] Preferably, the lifting slider includes an upper slider and a lower slider that are separately arranged. A hemispherical groove is provided on the top side of the upper slider, and a ball bearing is provided in the hemispherical groove. A universal ball bearing is rolled in the hemispherical groove and cooperates with the ball bearing.

[0011] Preferably, the screw hole is located at the bottom of the lower slider, and the screw is threadedly connected to the bottom of the lower slider through the screw hole.

[0012] Preferably, the lower part of the lifting slider is provided with a vertically extending guide groove, and a guide key is vertically provided on the inner side wall of the cylinder seat. The guide key and the guide groove are correspondingly matched to guide and limit the lifting slider to move up and down in the receiving cavity.

[0013] Preferably, lugs are installed at both ends of the outer side wall of the cylinder base.

[0014] This utility model has the following beneficial effects:

[0015] This invention allows for the lifting of large equipment by manipulating a drive handle to swing back and forth, thereby driving the screw to rotate in both directions. This, in turn, moves the lifting slider and the universal ball up and down, thus lifting the equipment to adjust its height. Since the universal ball is designed to roll, it reduces the resistance to horizontal sliding of the large equipment. Therefore, the horizontal position of the large equipment can be adjusted by pushing it. This adjustment operation is easier and more convenient, and it is easier to control to achieve precise adjustment, thereby improving the installation accuracy and efficiency of large equipment. Attached Figure Description

[0016] Figure 1 This is a perspective view of an embodiment of the present invention.

[0017] Figure 2 This is a side view of an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the fit of the concealed cylinder base from one perspective, according to an embodiment of this utility model.

[0019] Figure 4 This is a schematic diagram of the fit of the concealed cylinder base from another perspective, representing an embodiment of this utility model.

[0020] Figure 5 This is a schematic diagram of the internal structure of the cylinder seat according to an embodiment of the present invention.

[0021] Figure 6 This is a top view of an embodiment of the present invention.

[0022] Figure 7 yes Figure 6 Sectional view at point AA.

[0023] Figure labels: 1 cylinder base, 2 receiving cavity, 3 lifting slider, 31 upper slider, 32 lower slider, 33 hemispherical groove, 4 universal ball, 5 drive handle, 6 transmission rod, 7 first bevel gear, 8 second bevel gear, 9 screw, 10 flat thrust bearing, 11 clearance space, 12 limiting step, 13 blocking step surface, 14 guide groove, 15 guide key, 16 lug, 17 ball. Detailed Implementation

[0024] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] See Figure 1-7As shown in the figure, as an embodiment of the present invention, a lifting device is provided, including a cylindrical base 1 with a receiving cavity 2 and an open top. A lifting slider 3 that can move up and down is installed in the receiving cavity 2 of the cylindrical base 1. A universal ball 4 is rolled on the top side of the lifting slider 3. The top of the universal ball 4 protrudes from the top surface of the lifting slider 3. A screw hole is provided at the bottom of the lifting slider 3. A screw rod 9 is threaded into the screw hole. A drive handle 5 is oscillatingly provided on the cylindrical base 1. The drive handle 5 is induced to drive the screw rod 9. The drive handle 5 includes a transmission component that passes through the side wall of the cylindrical base 1 and a handle fixedly installed at the outer end of the transmission component. The inner end of the transmission component is induced to drive the screw rod 9. Specifically, the transmission component includes a transmission rod 6 that is horizontally passed through the side wall of the cylindrical base 1 and a first bevel gear 7 fixedly installed at the inner end of the transmission rod 6. The handle is fixedly installed at the outer end of the transmission rod 6. A second bevel gear 8 is provided at the bottom of the screw rod 9. The first bevel gear 7 and the second bevel gear 8 are perpendicularly meshed and induced to drive each other. The device is oscillating back and forth by operating the drive handle 5. The drive screw 9 rotates in both directions, which in turn moves the lifting slider 3 up and down, and in turn moves the universal ball 4 up and down. When installing large equipment such as centrifugal pumps and matching motors, the lifting devices are respectively set below the front and rear ends of the left and right base plates on the bottom side of the large equipment (i.e., one lifting device is located below each of the four corners of the large equipment), so that the universal ball 4 contacts and supports the base plate. Simply operate the drive handle 5 to swing it forward, which drives the transmission component to rotate. Then, through the meshing of the first bevel gear 7 and the second bevel gear 8, the screw 9 rotates in the forward direction, which in turn moves the lifting slider 3 and the universal ball 4 upward together, thus lifting the large equipment to adjust its height. Since the universal ball 4 is rolled, it can reduce the resistance of the large equipment sliding horizontally. Therefore, the horizontal position can be adjusted by pushing the large equipment. This adjustment operation is easier and more convenient, easier to control and achieve precise adjustment, thereby improving the installation accuracy and efficiency of the large equipment.

[0028] In this embodiment, the lifting slider 3 includes an upper slider 31 and a lower slider 32, which are separately arranged. The top side of the upper slider 31 is provided with a hemispherical groove 33, and a ball bearing 17 is disposed in the hemispherical groove 33. The universal ball 4 is rolled in the hemispherical groove 33 and cooperates with the ball bearing 17, thereby enabling the universal ball 4 to rotate in all directions with low resistance within the hemispherical groove 33. A screw hole is provided at the bottom of the lower slider 32, and the screw 9 is threadedly connected to the bottom of the lower slider 32 through the screw hole. The split design of the lifting slider 3 allows the upper slider 31 and the ball bearing 17 to be assembled into a whole component and then separately installed in the receiving cavity 2, which facilitates the assembly, disassembly and maintenance of the upper slider 31 and the ball bearing 17 together. Of course, it is also possible for the upper slider 31 and the lower slider 32 to be connected as a whole, which is not limited here.

[0029] In this embodiment, a planar thrust bearing 10 is installed on the inner bottom wall of the cylinder base 1, and the bottom end of the second bevel gear 8 is connected to the planar thrust bearing 10, so as to make the rotation process of the screw 9 and the second bevel gear 8 easier and smoother, thereby ensuring the smooth progress of the lifting work.

[0030] In this embodiment, the bottom of the lower slider 32 of the lifting slider 3 is provided with a clearance space 11 above the first bevel gear 7, which is used to allow the first bevel gear 7 to move and make way, thereby facilitating the miniaturization of the lifting device.

[0031] In this embodiment, an annular limiting step 12 is provided on the periphery of the cavity 2, and an annular blocking step 13 is formed on the circumference of the lower slider 32 of the lifting slider 3. The blocking step 13 and the limiting step 12 cooperate to block and limit the vertical movement of the lifting slider 3.

[0032] In this embodiment, the lower part of the lower slider 32 of the lifting slider 3 is provided with a vertically extending guide groove 14, and a guide key 15 is vertically provided on the inner side wall of the cylinder seat 1. The guide key 15 and the guide groove 14 cooperate to guide and limit the lifting slider 3 to move up and down in the receiving cavity 2, ensuring that the lifting slider 3 can only move in the up and down direction in the cylinder seat 1, preventing it from rotating circumferentially, and ensuring the stability of the lifting process.

[0033] In this embodiment, lugs 16 are installed at both ends of the outer side wall of the cylinder base 1. Workers hold the lugs 16 to facilitate the handling of the lifting device.

[0034] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A jacking device, characterized by: The device includes a cylindrical base with a receiving cavity and an open top. A lifting slider that can move up and down is installed inside the receiving cavity of the cylindrical base. A universal ball is rolled on the top side of the lifting slider, and the top of the universal ball protrudes from the top surface of the lifting slider. A screw hole is provided at the bottom of the lifting slider, and a screw is threaded into the screw hole. A drive handle is oscillating on the cylindrical base. The drive handle is connected to the screw. The drive handle oscillates back and forth to drive the screw to rotate in both directions, thereby driving the lifting slider to move up and down.

2. Jacking device according to claim 1, characterized in that The drive handle includes a transmission component that runs through the side wall of the cylinder seat and a handle that is fixedly installed on the outer end of the transmission component. The inner end of the transmission component is connected to the screw drive.

3. Jacking device according to claim 2, characterized in that The transmission component includes a transmission rod horizontally mounted on the side wall of the cylinder seat and a first bevel gear fixedly mounted on the inner end of the transmission rod. A handle is fixedly mounted on the outer end of the transmission rod. A second bevel gear is provided at the bottom of the screw. The first bevel gear and the second bevel gear are perpendicularly meshed and connected for transmission.

4. Jacking device according to claim 3, characterized in that A planar thrust bearing is installed on the inner bottom wall of the cylinder base, and the bottom end of the second bevel gear is connected to the planar thrust bearing.

5. The jacking device of claim 3, wherein: The bottom of the lifting slider has a clearance space above the first bevel gear.

6. The jacking device of claim 1, wherein: The circumferential cavity wall of the receiving cavity is provided with an annular limiting step, and the circumferential direction of the lifting slider is formed with an annular blocking step, which cooperates with the upper and lower blocking limit of the limiting step.

7. The jacking device of claim 1, wherein: The lifting slider includes an upper slider and a lower slider that are set separately. The top side of the upper slider has a hemispherical groove, and a ball bearing is set in the hemispherical groove. The universal ball bearing is rolled in the hemispherical groove and cooperates with the ball bearing.

8. Jacking device according to claim 7, characterized in that The screw hole is located at the bottom of the lower slider, and the screw is threadedly connected to the bottom of the lower slider through the screw hole.

9. The jacking device of claim 1, wherein: The lower part of the lifting slider is provided with a vertically extending guide groove, and a guide key is vertically provided on the inner side wall of the cylinder seat. The guide key and the guide groove are matched to guide and limit the lifting slider to move up and down in the receiving cavity.

10. The jacking device of claim 1, wherein: Lugs are installed at both ends of the outer side wall of the cylinder base.

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