Heavy-load high-precision manual lifting device

Abstract

The utility model relates to the technical field of lifting devices, in particular to a heavy-load high-precision manual lifting device which comprises a bottom plate, a front bearing support, a rear bearing support, a lower wedge block and a lead screw. The front bearing support and the rear bearing support are fixedly connected to the front side and the rear side of the upper end of the bottom plate respectively. The two ends of the lead screw are rotationally connected to the front bearing support and the rear bearing support respectively, the lower wedge-shaped block is slidably connected to the lead screw, two transverse sliding blocks are fixedly arranged at the lower end of the lower wedge-shaped block, two transverse guide rails are fixedly arranged at the upper end of the bottom plate, and the two transverse sliding blocks are slidably connected to the two transverse guide rails respectively. Two inclined guide rails are fixedly arranged at the upper end of the lower wedge-shaped block, an inclined sliding block is arranged on each inclined guide rail in a sliding mode, and an upper wedge-shaped block is fixedly arranged at the upper ends of the two inclined sliding blocks. The linear lifting mechanism can realize high-precision linear lifting, and can keep higher stability under the condition of larger load.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, and particularly relates to a manual lifting device with large load and high precision. Background Technique

[0002] A manual lifting device is a mechanical system that realizes the vertical movement of objects or equipment through manual operation. According to different application scenarios and requirements, manual lifting devices can adopt various designs and structural forms.

[0003] At present, the following areas still need to be improved in the existing technology: Most of the current manual lifting platforms on the market use scissor lift structures, which can bear relatively low loads and have non-linear lifting. The working principle of the scissor lift mechanism is to install two sets of scissor-type lifting mechanisms on the lifting platform to achieve height adjustment in the vertical direction. Since its working principle is similar to the opening and closing of scissors, there are non-linear lifting characteristics in actual operation, that is, the change of load will affect the lifting speed and stability. Content of the Utility Model

[0004] To solve the above problems existing in the prior art, the utility model provides a manual lifting device with large load and high precision, which can achieve high-precision linear lifting and maintain high stability under the condition of large load.

[0005] The purpose of the utility model can be achieved by the following technical solutions:

[0006] A manual lifting device with large load and high precision includes a bottom plate, a front bearing support, a rear bearing support, a lower wedge block and a lead screw. The front bearing support and the rear bearing support are respectively fixedly connected to the front and rear sides of the upper end of the bottom plate, and the two ends of the lead screw are respectively rotatably connected to the front bearing support and the rear bearing support;

[0007] The lower wedge block is slidably connected to the lead screw, and two transverse sliders are fixedly arranged at the lower end of the lower wedge block. Two transverse guide rails are fixedly arranged at the upper end of the bottom plate, and the two transverse sliders are respectively slidably connected to the two transverse guide rails;

[0008] Two inclined guide rails are fixedly arranged at the upper end of the lower wedge block, and an inclined slider is slidably arranged on each inclined guide rail. The upper ends of the two inclined sliders are fixedly provided with an upper wedge block.

[0009] Further, left and right guide plates are respectively arranged on the left and right sides of the lower wedge block. Left and right guide rail mounting plates are respectively and fixedly arranged on the left and right sides of the bottom plate. Two left vertical sliders are fixedly arranged on the outer side of the left guide plate. Two left vertical guide rails are fixedly arranged on the inner side of the left guide rail mounting plate. The two left vertical sliders are both slidably connected to the two left vertical guide rails.

[0010] Further, two right vertical sliders are fixedly arranged on the outer side of the right guide plate. Two right vertical guide rails are fixedly arranged on the inner side of the right guide rail mounting plate. The two right vertical sliders are both slidably connected to the two right vertical guide rails.

[0011] Further, a lifting plate is fixedly arranged at the upper end of the upper wedge block. The two ends of the lifting plate are respectively fixedly connected to the upper ends of the left guide plate and the right guide plate.

[0012] Further, a rotating handwheel is fixedly arranged at one end of the lead screw close to the front bearing support.

[0013] Further, a front mounting plate and a rear mounting plate are respectively fixedly arranged at the front and rear ends of the bottom plate.

[0014] Further, the front ends of the left guide rail mounting plate and the right guide rail mounting plate are both fixedly connected to the front mounting plate, and the rear ends of the left guide rail mounting plate and the right guide rail mounting plate are both fixedly connected to the rear mounting plate.

[0015] Further, the lifting plate is located at the upper ends of the left guide rail mounting plate and the right guide rail mounting plate.

[0016] The beneficial effects of the present utility model are as follows:

[0017] (1) By arranging the horizontal guide rail, the inclined guide rail and the lead screw, the technical effect that can be achieved is that when the rotating handwheel is rotated, the lead screw drives the lower wedge block to move on the horizontal guide rail, and at the same time makes the upper wedge block slide relatively on the inclined guide rail. At the same time, the left vertical guide rail and the right vertical guide rail drive the lifting plate to rise, only retaining the absolute movement in the vertical direction, and finally driving the lifting plate to move up and down, so as to realize the lifting function. The inclined guide rail and the lead screw can realize high-precision linear lifting and can maintain high stability under the condition of large load.

[0018] (2) By setting the upper wedge block, the front mounting plate and the rear mounting plate, the achievable technical effect is that two diagonal guide rails are fixedly arranged at the upper end of the lower wedge block. A diagonal slider is slidably arranged on each diagonal guide rail. An upper wedge block is fixedly arranged at the upper ends of the two diagonal sliders. A lifting plate is fixedly arranged at the upper end of the upper wedge block. The two ends of the lifting plate are respectively fixedly connected to the upper ends of the left guide plate and the right guide plate. The lifting plate can reduce the non-linear lifting influence brought by the weight through diagonal driving, avoiding affecting the lifting speed and stability.

[0019] (3) By setting the left guide rail mounting plate and the right guide rail mounting plate, the achievable technical effect is that two left vertical sliders are fixedly arranged on the outer side of the left guide plate. Two left vertical guide rails are fixedly arranged on the inner side of the left guide rail mounting plate. The two left vertical sliders are both slidably connected to the two left vertical guide rails. Two right vertical sliders are fixedly arranged on the outer side of the right guide plate. Two right vertical guide rails are fixedly arranged on the inner side of the right guide rail mounting plate. The two right vertical sliders are both slidably connected to the two right vertical guide rails. The left guide rail mounting plate and the right guide rail mounting plate can support the ascending and descending of the lifting plate, conduct auxiliary support on its left and right ends, and enhance the supporting force and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] For the convenience of those skilled in the art to understand, the following further describes the present utility model with reference to the accompanying drawings.

[0021] Figure 1 is the first three-dimensional view of the present utility model;

[0022] Figure 2 is the second three-dimensional view of the present utility model;

[0023] Figure 3 is the first three-dimensional view of the present utility model with the lifting plate, the front mounting plate and the rear mounting plate removed;

[0024] Figure 4 is the second three-dimensional view of the present utility model with the lifting plate, the front mounting plate and the rear mounting plate removed;

[0025] Figure 5 is the three-dimensional view of the present utility model with the lifting plate, the front mounting plate, the rear mounting plate, the left guide plate, the right guide plate, the left vertical guide rail and the right vertical guide rail removed;

[0026] Figure 6 is the top view of the present utility model with the lifting plate, the front mounting plate, the rear mounting plate, the left guide plate, the right guide plate, the left vertical guide rail and the right vertical guide rail removed;

[0027] Figure 7 is the three-dimensional view of the lead screw, the front bearing support, the rear bearing support and the lower wedge block of the present utility model;

[0028] Description of Main Component Symbols:

[0029] In the figure: 1, bottom plate; 2, right guide plate; 3, horizontal guide rail; 4, inclined guide rail; 5, upper wedge block; 6, rotary handwheel; 7, lead screw; 8, front bearing support; 9, rear bearing support; 10, lower wedge block; 11, left guide rail mounting plate; 12, left vertical guide rail; 13, left guide plate; 14, lifting plate; 15, right guide rail mounting plate; 16, front mounting plate; 17, rear mounting plate; 18, right vertical guide rail. Specific Embodiment

[0030] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application; obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0031] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] Refer to Figures 1 to 7 , a manual lifting device with large load and high precision disclosed in the present utility model, including a bottom plate 1, a front bearing support 8, a rear bearing support 9, a lower wedge block 10 and a lead screw 7. The front bearing support 8 and the rear bearing support 9 are respectively fixedly connected to the front and rear sides of the upper end of the bottom plate 1, and the two ends of the lead screw 7 are respectively rotatably connected to the front bearing support 8 and the rear bearing support 9.

[0034] The lower wedge block 10 is slidably connected to the lead screw 7. Two transverse sliders are fixedly arranged at the lower end of the lower wedge block 10. Two transverse guide rails 3 are fixedly arranged at the upper end of the bottom plate 1. The two transverse sliders are respectively slidably connected to the two transverse guide rails 3.

[0035] Two inclined guide rails 4 are fixedly arranged at the upper end of the lower wedge block 10. An inclined slider is slidably arranged on each inclined guide rail 4. The upper ends of the two inclined sliders are fixedly provided with an upper wedge block 5. The upper end of the lower wedge block 10 is a bevel surface, and the upper end of the upper wedge block 5 is a bevel surface.

[0036] A left guide plate 13 and a right guide plate 2 are respectively arranged on the left and right sides of the lower wedge block 10. A left guide rail mounting plate 11 and a right guide rail mounting plate 15 are respectively fixedly arranged on the left and right sides of the bottom plate 1. Two left vertical sliders are fixedly arranged on the outer side of the left guide plate 13. Two left vertical guide rails 12 are fixedly arranged on the inner side of the left guide rail mounting plate 11. The two left vertical sliders are respectively slidably connected to the two left vertical guide rails 12.

[0037] Two right vertical sliders are fixedly arranged on the outer side of the right guide plate 2. Two right vertical guide rails 18 are fixedly arranged on the inner side of the right guide rail mounting plate 15. The two right vertical sliders are respectively slidably connected to the two right vertical guide rails 18.

[0038] A lifting plate 14 is fixedly arranged at the upper end of the upper wedge block 5. The two ends of the lifting plate 14 are respectively fixedly connected to the upper ends of the left guide plate 13 and the right guide plate 2. The lifting plate 14 can reduce the non-linear lifting influence caused by the weight through oblique driving, avoiding affecting the lifting speed and stability.

[0039] A rotating handwheel 6 is fixedly arranged at one end of the lead screw 7 close to the front bearing support 8. A front mounting plate 16 and a rear mounting plate 17 are respectively fixedly arranged at the front and rear ends of the bottom plate 1.

[0040] The front ends of the left guide rail mounting plate 11 and the right guide rail mounting plate 15 are both fixedly connected to the front mounting plate 16, and the rear ends of the left guide rail mounting plate 11 and the right guide rail mounting plate 15 are both fixedly connected to the rear mounting plate 17. The lifting plate 14 is located at the upper ends of the left guide rail mounting plate 11 and the right guide rail mounting plate 15.

[0041] The left guide rail mounting plate 11 and the right guide rail mounting plate 15 can support the rising and falling of the lifting plate 14, assist in supporting its left and right ends, and enhance the supporting force and stability.

[0042] The inclined guide rails 4 and the lead screw 7 can achieve high-precision linear lifting and maintain high stability under large loads.

[0043] Working principle and usage process of the present utility model: When the rotary handwheel 6 is rotated, the lead screw 7 drives the lower wedge block 10 to move on the horizontal guide rail 3, and at the same time makes the upper wedge block 5 slide relatively on the inclined guide rail 4. Meanwhile, the left vertical guide rail 12 and the right vertical guide rail 18 drive the lifting plate 14 to rise, only retaining the absolute movement in the vertical direction, and finally driving the lifting plate 14 to move up and down, thereby realizing the lifting function.

[0044] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A manual lifting device with large load and high precision, characterized in that: It includes a bottom plate (1), a front bearing support (8), a rear bearing support (9), a lower wedge block (10) and a lead screw (7). The front bearing support (8) and the rear bearing support (9) are respectively fixedly connected to the front and rear sides of the upper end of the bottom plate (1). The two ends of the lead screw (7) are respectively rotatably connected to the front bearing support (8) and the rear bearing support (9). The lower wedge block (10) is slidably connected to the lead screw (7). Two transverse sliders are fixedly arranged at the lower end of the lower wedge block (10). Two transverse guide rails (3) are fixedly arranged at the upper end of the bottom plate (1). The two transverse sliders are respectively slidably connected to the two transverse guide rails (3). Two inclined guide rails (4) are fixedly arranged at the upper end of the lower wedge block (10). An inclined slider is slidably arranged on each of the two inclined guide rails (4). The upper ends of the two inclined sliders are fixedly provided with an upper wedge block (5).

2. A manual lifting device with large load and high precision according to claim 1, characterized in that: A left guide plate (13) and a right guide plate (2) are respectively arranged on the left and right sides of the lower wedge block (10). A left guide rail mounting plate (11) and a right guide rail mounting plate (15) are respectively fixedly arranged on the left and right sides of the bottom plate (1). Two left vertical sliders are fixedly arranged on the outer side of the left guide plate (13). Two left vertical guide rails (12) are fixedly arranged on the inner side of the left guide rail mounting plate (11). The two left vertical sliders are respectively slidably connected to the two left vertical guide rails (12).

3. The manual lifting device with large load and high precision according to claim 2, characterized in that: Two right vertical sliders are fixedly arranged on the outer side of the right guide plate (2). Two right vertical guide rails (18) are fixedly arranged on the inner side of the right guide rail mounting plate (15). The two right vertical sliders are respectively slidably connected to the two right vertical guide rails (18).

4. A manual lifting device with large load and high precision according to claim 3, characterized in that: A lifting plate (14) is fixedly arranged at the upper end of the upper wedge block (5). The two ends of the lifting plate (14) are respectively fixedly connected to the upper ends of the left guide plate (13) and the right guide plate (2).

5. A manual lifting device with large load and high precision according to claim 1, characterized in that: A rotary handwheel (6) is fixedly arranged at one end of the lead screw (7) close to the front bearing support (8).

6. The manually lifting device with large load and high precision according to claim 2, characterized in that: A front mounting plate (16) and a rear mounting plate (17) are respectively fixedly arranged at the front and rear ends of the bottom plate (1).

7. A manual lifting device with large load and high precision according to claim 6, characterized in that: The front ends of the left guide rail mounting plate (11) and the right guide rail mounting plate (15) are both fixedly connected to the front mounting plate (16). The rear ends of the left guide rail mounting plate (11) and the right guide rail mounting plate (15) are both fixedly connected to the rear mounting plate (17).

8. A manual lifting device with large load and high precision according to claim 4, characterized in that: The lifting plate (14) is located at the upper ends of the left guide rail mounting plate (11) and the right guide rail mounting plate (15).

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