Double-screw lifting device

Abstract

The utility model relates to a double-lead-screw lifting device which comprises an inner lead screw, the inner lead screw is connected with an inner lead screw sleeve and an outer lead screw sleeve, the inner lead screw sleeve and the outer lead screw sleeve are connected with a lead screw nut, and the lead screw nut is connected with a mounting seat. The screw rod nut is sleeved with a bearing seat, the bearing seat is connected with a deep groove ball bearing, the bearing seat is connected with a rotating seat, and the rotating seat is connected with a cover plate; according to the device, the structure mode that the two lead screws are matched for lifting and the small lead screw is sleeved with the large lead screw is adopted, the stroke of two times or multiple times can be obtained by single-time lead screw length, the long lifting stroke can be obtained in a specific space, and the overall structure of the machine is more compact.

Description

Technical Field

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

[0002] The existing single screw lifting mechanism has a short stroke within a certain space. If a long stroke is required, a large space is needed, resulting in an overall non-compact mechanism. Utility Model Content

[0003] The purpose of this invention is to provide a double screw lifting device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a double lead screw lifting device, comprising an inner lead screw, which is connected to an inner and outer lead screw sleeve, the inner and outer lead screw sleeve being connected to a lead screw nut, and the lead screw nut being connected to a mounting base; a bearing seat is provided on the outer sleeve of the lead screw nut, the bearing seat being connected to a deep groove ball bearing, the bearing seat being connected to a rotating base, and the rotating base being connected to a cover plate.

[0005] Optionally, the mounting base is connected to the lead screw nut via a round nut, a locking washer, and a round nut.

[0006] Optionally, the mounting base and the lead screw nut are fixed together by a flat key.

[0007] Optionally, the bearing housing is connected to the outer ring of the deep groove ball bearing.

[0008] Optionally, the inner and outer threads of the inner and outer lead screw sleeves have opposite directions of rotation.

[0009] Optionally, the external threads of the inner and outer lead screw sleeves are engaged with the internal threads of the lead screw nut, and the internal threads of the inner and outer lead screw sleeves are engaged with the external threads of the inner lead screw.

[0010] Optionally, the cover plate secures the ratchet wrench to the rotating seat.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model adopts a double lead screw lifting mechanism, with a large lead screw fitted with a small lead screw. This allows a single lead screw length to achieve two or more times the stroke, resulting in a longer lifting stroke within a specific space and making the overall mechanical structure more compact. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0015] like Figure 1 As shown, a double lead screw lifting device includes an inner lead screw 9, which is connected to an inner and outer lead screw sleeve 10. The inner and outer lead screw sleeve 10 is connected to a lead screw nut 7, and the lead screw nut 7 is connected to a mounting base 3. A bearing seat 6 is provided on the outer sleeve of the lead screw nut 7. The bearing seat 6 is connected to a deep groove ball bearing 5, and the bearing seat 6 is connected to a rotating base 8. The rotating base 8 is connected to a cover plate 11.

[0016] The mounting base is connected to the lead screw nut 7 via a round nut, a retaining washer 2, and a round nut 1; the mounting base 3 and the lead screw nut 7 are fixed together by a flat key; the bearing seat 6 is connected to the outer ring of the deep groove ball bearing 5; the inner and outer lead screw sleeves 10 have opposite internal and external threads, the external threads of the inner and outer lead screw sleeves 10 engage with the internal threads of the lead screw nut 7, and the internal threads of the inner and outer lead screw sleeves 10 engage with the external threads of the inner lead screw 9; the mounting base 3 is connected to the machine base, the head of the inner lead screw 9 is connected to the component that needs to be lifted, and the guide groove on the outer surface of the inner and outer lead screw sleeves 10 is connected to the rotating seat 8 via a guide key; the cover plate 11 fixes the ratchet wrench (commercially available product, not shown in the figure) to the rotating seat 8.

[0017] When this utility model is in operation, when the ratchet wrench drives the 8 rotating seat to rotate, the 8 rotating seat drives the 10 inner and outer screw sleeves to rotate together. Since the 7 screw nut cannot rotate, the 10 inner and outer screw sleeves will extend forward while rotating. Since the end of the 9 inner screw is fixed and the thread is opposite to the external thread of the 10 inner and outer screw sleeves, the 9 inner screw will extend in the same direction as the 10 inner and outer screw sleeves.

[0018] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A double-screw lifting device, characterized in that, Includes an inner lead screw (9), which is connected to an inner and outer lead screw sleeve (10), which is connected to a lead screw nut (7), and the lead screw nut (7) is connected to a mounting base (3); The lead screw nut (7) is fitted with a bearing seat (6), which is connected to the deep groove ball bearing (5). The bearing seat (6) is connected to the rotating seat (8), which is connected to the cover plate (11).

2. The double lead screw lifting device according to claim 1, characterized in that, The mounting base is connected to the lead screw nut (7) via a round nut, a stop washer (2), and a round nut (1).

3. The double-screw lifting device according to claim 2, characterized in that, The mounting base (3) and the lead screw nut (7) are fixed together by a flat key.

4. A double-screw lifting device according to claim 3, characterized in that, The bearing housing (6) is connected to the outer ring of the deep groove ball bearing (5).

5. A double-screw lifting device according to claim 4, characterized in that, The inner and outer threads of the inner and outer screw sleeves (10) have opposite directions of rotation.

6. A double-screw lifting device according to claim 5, characterized in that, The external thread of the inner and outer lead screw sleeve (10) is engaged with the internal thread of the lead screw nut (7), and the internal thread of the inner and outer lead screw sleeve (10) is engaged with the external thread of the inner lead screw (9).

7. A double-screw lifting device according to claim 6, characterized in that, The cover plate (11) secures the ratchet wrench to the rotating seat (8).

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