Manually operated lifting device

Abstract

The utility model discloses a manual operation lifting device which comprises a base, a rotating platform and a plurality of lifting driving parts, the lifting driving parts are arranged at the top of the base and fixedly connected with the base, the telescopic ends of the lifting driving parts stretch out and draw back in the vertical direction, the rotating platform is arranged above the base, and the lifting driving parts are fixedly connected with the rotating platform. And the rotating platform is connected with the telescopic end. The combination form of the base, the lifting platform and the lifting driving piece is adopted, the lifting platform supports the handcart through the lifting platform, the lifting driving piece achieves the lifting action of the lifting platform, the base achieves overall transfer, the structure is simple, the strength is high, the long-term use stability is high, and the lifting mode of the lifting driving piece is easy to operate and good in lifting stability; and the user experience is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of switch cabinet hand trucks and relates to a manually operated lifting device. Background Art

[0002] In a metal-clad draw-out switchgear, the breaker hand truck is an important component. A transfer cart is provided to move the heavy breaker hand truck into the switch cabinet.

[0003] The structural strength of the transfer cart needs to meet the requirements of the heavy weight of the breaker hand truck. At the same time, it should also have a certain lifting ability to facilitate the smooth installation of various types of hand trucks into the switch cabinet. The overly complex structure of the existing transfer cart makes it prone to deformation and other situations under the high-intensity use of the long-term heavy hand truck, resulting in risks such as falling during the transfer process. Summary of the Utility Model

[0004] The utility model aims to overcome the deficiencies of the prior art and provides a manually operated lifting device.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A manually operated lifting device includes a base, a rotating platform, and a plurality of lifting driving members. The lifting driving members are arranged on the top of the base and fixedly connected to the base. The telescopic end of the lifting driving member performs telescopic movement in the vertical direction. The rotating platform is arranged above the base and is connected to the telescopic end.

[0007] Further, the lifting driving member includes a sleeve, a screw, an upper limit block, a lower limit block, and a rotating disk. The screw is threadedly connected to the sleeve. The lower limit block is sleeved outside the sleeve and fixedly connected to the base. The upper limit block is fixedly connected to the lifting platform. The top of the screw penetrates through the upper limit block. The rotating disk is connected to one of the sleeve and the screw.

[0008] Further, a plurality of protrusions protruding radially are arranged on the outer periphery of the rotating disk.

[0009] Further, the rotating disk has a polygonal structure.

[0010] Further, a nut is arranged in the middle of the rotating disk. The outer periphery of the nut is clamped with the rotating disk, and the inner periphery of the nut is fixedly connected to the sleeve or the screw.

[0011] In summary, the beneficial effects of the utility model are as follows:

[0012] The utility model adopts a combined form of a base, a lifting platform and a lifting driving member. The lifting platform is used to support the handcart, the lifting driving member realizes the lifting movement of the lifting platform, and the base realizes the overall transportation. The structure is simple and has high strength, and has strong stability during long-term use. The lifting form of the lifting driving member is simple to operate and has good lifting stability, providing a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model.

[0014] Figure 2 is Figure 1 a schematic structural diagram from another perspective in

[0015] Figure 3 a schematic structural diagram of the lifting driving member 3.

[0016] Figure 4 is a schematic structural diagram of the rotating disk 35.

[0017] Reference numerals in the figures: 1, base 1; 2, lifting platform 2; 3, lifting driving member 3; 31, sleeve 31; 32, screw rod 32; 33, lower limit block 33; 34, upper limit block 34; 35, rotating disk 35. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following specifically illustrates the embodiments of the utility model through specific examples. Those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in this specification. The utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0019] It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the utility model. Therefore, only the components related to the utility model are shown in the drawings, rather than being drawn according to the number, shape and size of the components during actual implementation. The type, quantity and ratio of each component during actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0020] All directional indications (such as up, down, left, right, front, back, horizontal, vertical...) in the embodiments of the utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0021] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0022] A manually operated lifting device is mainly used for the transfer and lifting operations of the trolley in the switchgear equipment.

[0023] Refer to Figure 1 and Figure 2 As shown, the lifting device includes a base 1, a lifting platform 2, and a lifting driving member 3. The base 1 includes a frame structure formed by connecting a plurality of columns and crossbeams. A plurality of lifting driving members 3 are provided at the top of the base 1. The lifting driving members 3 are arranged to perform telescopic actions in the vertical direction. The lifting platform 2 is arranged above the base 1 and is connected to the top of the telescopic end of the lifting driving member 3 to realize the lifting action of the lifting platform 2. A plane for placing the trolley is formed at the top of the lifting platform 2. A plurality of casters are provided at the bottom of the base 1 to provide movement, so as to realize the transfer and lifting of the trolley, and thus realize the taking and placing of the trolley into and out of the switchgear.

[0024] A support plate is fixedly provided at the top of the base 1. In this embodiment, the number of the lifting driving members 3 is set to four, and they are respectively arranged at the four corner positions of the support plate. Refer to Figure 3 As shown, the lifting driving member 3 includes a screw 32, a sleeve 31, a rotating disc 35, an upper limit block 34, and a lower limit block 33. Among them, the screw 32 is threadedly connected to the sleeve 31. The lower limit block 33 is sleeved on the outer periphery of the sleeve 31. Installation holes are provided on the support plate, so that the sleeve 31 and the lower limit block 33 can pass through the installation holes, and the lower limit block 33 forms a fixed mating connection with the installation holes, thereby fixedly arranging the lifting driving member 3 on the base 1 and making the axial direction of the screw 32 vertically upward.

[0025] The upper limit block 34 is fixedly connected to the bottom of the lifting platform 2, including but not limited to riveting, bolt connection, etc. An insertion hole is formed in the upper limit block 34 for the top of the screw 32 to be inserted upward for installation, realizing the connection between the lifting platform 2 and the lifting driving member 3.

[0026] In some embodiments, the rotating disc 35 is arranged on the outer periphery of the sleeve 31. The rotating disc 35 is fixedly connected to the sleeve 31. There is a clearance fit between the sleeve 31 and the lower limit block 33, so that the sleeve 31 and the lower limit block 33 can rotate relative to each other. The top of the screw 32 is fixedly connected to the upper limit block 34. The user drives the rotation of the sleeve 31 by rotating the rotating disc 35. The relative rotation of the sleeve 31 and the screw 32 causes the screw 32 to perform a lifting action. Furthermore, through the adjustment of the rotating discs 35 on the four lifting driving members 3, the lifting of the lifting platform 2 is driven.

[0027] In some other embodiments, the sleeve 31 is fixedly connected to the lower limit block 33. The rotating disk 35 is arranged on the outer periphery of the screw rod 32 and is fixedly connected to the screw rod 32. The top of the screw rod 32 movably penetrates through the upper limit block 34. By rotating the rotating disk 35 to drive the rotation of the screw rod 32, the relative rotation between the sleeve 31 and the screw rod 32 causes the screw rod 32 to form a lifting motion.

[0028] Referring to Figure 4 As shown, a plurality of radially protruding protrusions are provided on the outer periphery of the rotating disk 35, making the rotating disk 35 have a polygonal or multi-angular structure, increasing the grasping force and friction force with the user's hand, and facilitating the user to accurately control the rotation amount of the rotating disk 35.

[0029] Furthermore, a nut is further included. The nut is fixedly connected to the sleeve 31 or the screw rod 32. A polygonal hole for snap-fitting with the nut is provided in the middle of the rotating disk 35, so as to facilitate the quick installation between the rotating disk 35 and the sleeve 31 or the screw rod 32, and the rotational connection strength between them.

[0030] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

Claims

1. A manually operated lifting device, characterized in that, It includes a base (1), a lifting platform (2) and a plurality of lifting driving members (3). The lifting driving members (3) are arranged on the top of the base (1) and fixedly connected to the base (1). The telescopic end of the lifting driving member (3) performs telescopic movement in the vertical direction. The lifting platform (2) is arranged above the base (1), and the lifting platform (2) is connected to the telescopic end.

2. A manually operated lifting device according to claim 1, wherein, The lifting driving member (3) includes a sleeve (31), a screw rod (32), an upper limit block (34), a lower limit block (33) and a rotating disk (35). The screw rod (32) is threadedly connected to the sleeve (31). The lower limit block (33) is sleeved outside the sleeve (31), and the lower limit block (33) is fixedly connected to the base (1). The upper limit block (34) is fixedly connected to the lifting platform (2). The top of the screw rod (32) penetrates through the upper limit block (34). The rotating disk (35) is connected to one of the sleeve (31) and the screw rod (32).

3. A manually operated lifting device according to claim 2, characterized in that, A plurality of protrusions protruding radially are arranged on the outer periphery of the rotating disk (35).

4. A manually operated lifting device according to claim 2, characterized in that, The rotating disk (35) has a polygonal structure.

5. A manually operated lifting device according to claim 2, characterized in that, A nut is arranged in the middle of the rotating disk (35). The outer periphery of the nut is clamped with the rotating disk (35), and the inner periphery of the nut is fixedly connected to the sleeve (31) or the screw rod (32).

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