Manual adjustment lifting device

Abstract

The utility model relates to a manual adjusting lifting device which comprises a top plate, a bottom plate, a first connecting piece, a second connecting piece, a sliding bearing, a sliding rail, a screw rod, a limiting block, a lower adjusting nut and a connecting block. The first connecting piece is fixedly connected with the top plate, the second connecting piece is fixedly connected with the bottom plate, the sliding rail is connected with the second connecting piece, and the sliding bearing is fixedly connected with the first connecting piece and slidably connected with the sliding rail. The screw is fixed to the bottom plate, the connecting block is movably connected with the screw and fixedly connected with the first connecting piece, the limiting block is fixed to the top end of the screw, and the lower adjusting nut penetrates through the screw and is located on the side, close to the bottom plate, of the connecting block. Through supporting of the top plate and the bottom plate, the contact area with a workpiece is enlarged, stability is improved, the lifting speed is controlled through the lower adjusting nut, the lifting process is smoother through matching of the sliding rail bearings and the sliding rails, and the number and the length of the sliding rails and the number of the sliding bearings can be adjusted according to actual requirements.

Description

Technical Field

[0001] The utility model relates to a manually adjustable lifting device. Background Art

[0002] A jack is a light and small lifting device that uses a rigid lifting piece as a working device to lift heavy objects through a small stroke of the top support or bottom claws. When the jack is working, the contact area with the workpiece is relatively small, and the stress is concentrated on the contact surface, which is easy to tilt, especially when the workpiece is lifted on a whole surface. It is difficult for the jack to ensure that the force acting on the contact surface of the workpiece is balanced. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide a manually adjustable lifting device to replace the jack, which is used in occasions where it is difficult to disassemble some equipment, and is particularly suitable for situations where the contact surface area of ​​the lifting workpiece is large.

[0004] The utility model discloses a manually adjustable lifting device, comprising a top plate, a bottom plate, a first connecting member, a second connecting member, a sliding block, a sliding rail, a screw rod, a limiting block, a lower adjusting nut, and a connecting block;

[0005] The first connecting member is fixedly connected to the top plate, the second connecting member is fixedly connected to the bottom plate, the slide rail is fixedly connected to the second connecting member, the slider is fixedly connected to the first connecting member and slidably connected to the slide rail;

[0006] The screw is fixedly connected to the base plate, the connecting block is movably connected to the screw and fixedly connected to the first connecting piece, the limit block is fixed to the end of the screw close to one end of the top plate, and the lower adjusting nut passes through the screw and is located on a side of the connecting block close to the base plate.

[0007] The utility model expands the contact area with the workpiece through the support of the top plate and the bottom plate, improves the stability of the workpiece during lifting, controls the lifting of the connection block by screwing the lower adjustment nut, and then drives the lifting of the top plate, and a limit block is provided on the top of the screw rod to limit the maximum height of adjustment to prevent the connection block from separating from the screw rod when adjusting the height; the lifting process is smoother through the cooperation of the sliding bearing and the slide rail, and the number and length of the slide rail and the number of sliders can be adjusted according to actual needs. The utility model has a simple structure, is easy to install, is convenient to use, and has good safety.

[0008] As a preferred solution, the limit block is replaced by an upper adjustment nut, which passes through the screw rod and is located on a side of the connecting block close to the top plate. The upper adjustment nut can limit the moving distance of the device when it rises.

[0009] As a preferred solution, the slider is a sliding bearing. Through the combination of the sliding bearing and the slide rail, the lifting process is made smoother and the lifting accuracy of the device can be improved.

[0010] As a preferred solution, the screw rod is marked with a scale, and through the setting of the scale, the user can more accurately adjust the up and down movement distance when adjusting the lower adjustment nut. The up and down movement distance of the device can be accurately adjusted through the scale.

[0011] As a preferred solution, the slide rail is marked with scales, and through the setting of the scales, the user can more accurately adjust the up and down moving distance when adjusting the lower adjustment nut.

[0012] As a preferred solution, the second connecting member is marked with a scale on one side close to the screw rod. Through the setting of the scale, the user can more accurately adjust the up and down movement distance when adjusting the lower adjustment nut.

[0013] As a preferred solution, a side of the bottom plate away from the top plate is provided with raised stripes, and the raised stripes increase the friction force and improve the stability of the device.

[0014] As a preferred solution, a manually adjustable lifting device further comprises ribs, which are respectively fixed to the top plate and the first connecting member, and / or respectively fixed to the bottom plate and the second connecting member. The stability of the device is improved by the fixed connection of the ribs.

[0015] As a preferred solution, a manually adjustable lifting device further comprises a fixing block, through which the screw rod is fixedly connected to the bottom plate. The fixing block can increase the contact area between the screw rod and the bottom plate and enhance stability.

[0016] As a preferred solution, the bottom plate and / or the top plate are provided with a plurality of fixing holes. The bottom plate can be fixed to the ground or to other devices through the fixing holes, thereby improving the stability of the manual adjustment lifting device of the present invention when in use; the top plate can be fixed to the workpiece through the fixing holes, thereby improving the stability of the workpiece when lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a manually adjustable lifting device;

[0018] Figure 2 It is a schematic diagram of the raised stripes on the bottom plate of a manually adjustable lifting device;

[0019] Among them, 1-top plate, 2-bottom plate, 32-first connecting piece, 34-second connecting piece, 36-rib plate, 42-sliding bearing, 44-slide rail, 5-screw, 62-upper adjusting nut, 64-lower adjusting nut, 66-connecting block, 68-fixing block, 7-fixing hole, 8-scale mark. DETAILED DESCRIPTION

[0020] like Figure 1-2 As shown, the manual adjustment lifting device described in the utility model includes a top plate 1, a bottom plate 2, a first connecting member 32, a second connecting member 34, a rib plate 36, a sliding bearing 42, a slide rail 44, a screw 5, an upper adjusting nut 62, a lower adjusting nut 64, a connecting block 66, a fixing block 68, a fixing hole 7, and a scale mark 8.

[0021] The first connecting member 32 is fixedly connected to the top plate 1 , and four ribs 36 are fixedly connected between the first connecting member 32 and the top plate 1 ; the second connecting member 34 is fixedly connected to the bottom plate 2 , and four ribs 36 are fixedly connected between the second connecting member 34 and the bottom plate 2 .

[0022] The top plate 1 and the bottom plate 2 are provided with fixing holes 7, and the bottom plate 2 is provided with a raised stripe on a side away from the top plate 1; there are two groups of slide rails 44, which are respectively fixedly connected to the second connecting member 34; there are four groups of sliding bearings 42, which are respectively fixedly connected to the first connecting member 32, and each group of slide rails 44 has two groups of sliding bearings 42.

[0023] The screw rod 5 is fixedly connected to the bottom plate 2 through the fixing block 68, the connecting block 66 passes through the screw rod 5 and is fixedly connected to the first connecting member 32, the upper adjusting nut 62 passes through the screw rod 5 and is located on a side of the connecting block 66 close to the top plate 1, and the lower adjusting nut 64 passes through the screw rod 5 and is located on a side of the connecting block 66 close to the bottom plate 2. The connecting block 66 and the first connecting member 32 are also fixedly connected by the rib plate 36.

[0024] The slide rail 44, the screw rod 5, and the second connecting member 34 are marked with scale marks 8 on one side close to the screw rod 5, or with color marks at intervals. Figure 1 The scale mark 8 on the second connecting member 34 is marked in the middle.

[0025] The above-mentioned embodiment only expresses one implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. For ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A manually adjustable lifting device, characterized in that: It includes a top plate, a bottom plate, a first connecting piece, a second connecting piece, a sliding block, a sliding rail, a screw rod, a limit block, a lower adjusting nut, and a connecting block; The first connecting member is fixedly connected to the top plate, the second connecting member is fixedly connected to the bottom plate, the slide rail is fixedly connected to the second connecting member, the slider is fixedly connected to the first connecting member and slidably connected to the slide rail; The screw is fixedly connected to the base plate, the connecting block is movably connected to the screw and fixedly connected to the first connecting piece, the limit block is fixed to the end of the screw close to one end of the top plate, and the lower adjusting nut passes through the screw and is located on a side of the connecting block close to the base plate.

2. A manually adjustable lifting device according to claim 1, characterized in that: The limit block is replaced by an upper adjusting nut, which passes through the screw rod and is located on a side of the connecting block close to the top plate.

3. A manually adjustable lifting device according to claim 1, characterized in that: The sliding block is a sliding bearing.

4. A manually adjustable lifting device according to claim 1, characterized in that: The screw is marked with scales.

5. A manually adjustable lifting device according to claim 1, characterized in that: The slide rail is marked with scales.

6. A manually adjustable lifting device according to claim 1, characterized in that: The second connecting member is marked with scales on one side close to the screw rod.

7. A manually adjustable lifting device according to claim 1, characterized in that: A convex stripe is arranged on one side of the bottom plate away from the top plate.

8. The manually adjustable lifting device according to claim 1, characterized in that: It also includes ribs, which are respectively fixed to the top plate and the first connecting member, and / or respectively fixed to the bottom plate and the second connecting member.

9. The manually adjustable lifting device according to claim 1, characterized in that: It also includes a fixing block, and the screw rod is fixedly connected to the bottom plate through the fixing block.

10. The manually adjustable lifting device according to claim 1, characterized in that: The bottom plate and / or the top plate are provided with a plurality of fixing holes.

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