Electric elevator

Abstract

The utility model provides an electric lifter. The electric lifter comprises a rack, a driving platform, a lifting platform, a driving module, a main transmission module, a driven module, a first roller chain, a second roller chain and a balancing weight. The output end of the driving module is connected with the main transmission module, the first roller chain is meshed with the main transmission module and the driven module, the two ends of the first roller chain are connected with the balancing weight and the lifting platform respectively, the second roller chain is meshed with the main transmission module, and the two ends of the second roller chain are connected with the balancing weight and the lifting platform respectively. The balancing weight is arranged on the side portion of the machine frame, a sliding component is arranged at the end of the balancing weight, the balancing weight is connected with the side portion of the machine frame in a sliding mode through the sliding component, the sliding component comprises two idler wheels hinged to the balancing weight, extension lines of hinge axes of the two idler wheels intersect, and the two idler wheels abut against the machine frame. According to the utility model, through the sliding part structure between the balancing weight and the side part of the rack, the sliding connection between the balancing weight and the rack is more stable, and the sliding displacement is smoother.

Description

Technical Field

[0001] The utility model relates to a lifting device, in particular to an electric lift, belonging to the technical field of transportation equipment. Background Art

[0002] The electric lift is an important transportation device in the industrial field. Some conventional houses in industrial factories do not have hoisting tools such as overhead cranes, so the electric lift is installed to achieve the purpose of transporting goods. In the design of traditional electric lifts, the counterweight system usually adopts a simple slider or guide rail structure to be slidably connected with the frame. Although this structure is simple and effective, it causes relatively large friction between the counterweight system and the frame, reduces energy efficiency and aggravates component wear. Moreover, this rigid sliding connection method is difficult to adapt to the slight deformation or unevenness that may occur in the frame during use, and is prone to jamming or unsmooth operation. Content of the Utility Model

[0003] Based on the above background, the purpose of the utility model is to provide an electric lift to solve the problems described in the background art.

[0004] In order to achieve the above utility model purpose, the utility model provides the following technical solutions:

[0005] An electric lift includes a frame, a driving platform, a lifting platform, a driving module, a main transmission module, a driven module, a first roller chain, a second roller chain and a counterweight. The driving platform is fixedly connected to the top of the frame, and the lifting platform is arranged below the driving platform and can perform lifting displacement relative to the frame; the driving module, the main transmission module and the driven module are all arranged on the driving platform. The output end of the driving module is connected to the main transmission module. The first roller chain meshes with the main transmission module and the driven module respectively, and both ends of the first roller chain are connected to the counterweight and the lifting platform respectively. The second roller chain meshes with the main transmission module, and both ends of the second roller chain are connected to the counterweight and the lifting platform respectively; the counterweight is arranged on the side of the frame, and a sliding component is arranged at the end of the counterweight. The counterweight is slidably connected to the side of the frame through the sliding component. The sliding component includes two rollers hinged to the counterweight. The extension lines of the hinge axes of the two rollers intersect, and both rollers abut against the frame.

[0006] Preferably, the driving module and the main transmission module are arranged on one side of the driving platform close to it, the driven module is arranged on the other side of the driving platform close to it, and the counterweight is arranged on one side of the frame close to the driving module and the main transmission module.

[0007] Preferably, the sliding member further includes a roller frame fixedly connected to the counterweight block. The two side portions of the roller frame form a first included angle, and two rollers are respectively hinged to the two side portions of the roller frame. On the side portion of the frame, there is a guide frame fixedly connected to the frame. The two side portions of the guide frame form a second included angle, and the outer peripheral surfaces of the two rollers respectively abut against the two side portions of the guide frame.

[0008] Preferably, there are four sliding members, and the four sliding members are respectively located at the four end portions of the counterweight block. There are two guide frames, and the two guide frames are respectively located at the two ends of the same side portion of the frame.

[0009] Preferably, on the side portion of the frame, there is also a protective frame fixedly connected to the frame, and the protective frame covers the outside of the counterweight block and the guide frame.

[0010] Preferably, the driving module includes a driving motor and a speed reducer. The output end of the driving motor is connected to the input end of the speed reducer. The speed reducer has two opposite output ends. There are two main transmission modules, and the two main transmission modules are respectively arranged on both sides of the speed reducer. The two output ends of the speed reducer are respectively connected to a main transmission module.

[0011] Preferably, the main transmission module includes a main transmission shaft, a first driving sprocket, a second driving sprocket and a driving sprocket seat. One end of the main transmission shaft is fixedly connected to an output end of the speed reducer. The other end of the main transmission shaft is respectively fixedly connected to the first driving sprocket and the second driving sprocket. The main transmission shaft, the first driving sprocket and the second driving sprocket are all hinged to the driving sprocket seat, and the bottom of the driving sprocket seat is fixedly connected to the driving platform.

[0012] Preferably, there are two driven modules, two first roller chains and two second roller chains. The two driven modules are respectively engaged with a main transmission module through a first roller chain, and the two second roller chains are respectively engaged with a main transmission module.

[0013] Preferably, the driven module includes a driven sprocket and a driven sprocket seat. The driven sprocket is hinged to the driven sprocket seat, and the bottom of the driven sprocket seat is fixedly connected to the driving platform.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] An electric lift of the present utility model, through the sliding component structure between the counterweight and the side of the frame, makes the sliding connection between the counterweight and the frame more stable and the sliding displacement smoother. Compared with the sliders or guide rails used in the prior art, the two rollers of the sliding component can reduce the friction between the counterweight and the side of the frame and improve the energy efficiency of the system. The rollers with the extended lines of the two hinge axes intersecting make their abutment against the side of the frame more stable, and the rollers can better adapt to the minor deformation of the frame surface and reduce the probability of the sliding displacement of the counterweight being stuck; the counterweight and the lifting platform are connected in different ways through the first roller chain and the second roller chain, improving the balance performance between the counterweight and the lifting platform and the uniformity of load distribution, and realizing the smoothness of the lifting movement of the lifting platform. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0017] Figure 1 is a three-dimensional structural schematic diagram of an electric lift of the present utility model;

[0018] Figure 2 is Figure 1 a partial enlarged view of part A in

[0019] Figure 3 is an upper structural schematic diagram of an electric lift of the present utility model;

[0020] Figure 4 is a top view structural schematic diagram of an electric lift of the present utility model;

[0021] In the figure: 1, frame; 2, drive platform; 3, lifting platform; 4, drive module; 5, main transmission module; 6, driven module; 7, first roller chain; 8, second roller chain; 9, counterweight; 10, sliding component; 101, guide frame; 102, protective frame; 401, drive motor; 402, reducer; 501, main drive shaft; 502, first driving sprocket; 503, second driving sprocket; 504, driving sprocket seat; 601, driven sprocket; 602, driven sprocket seat; 1001, roller; 1002, roller frame. Detailed Embodiments

[0022] The technical solution of the present utility model will be further specifically described below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the implementation of the present utility model is not limited to the following embodiments, and any formal modification and / or change made to the present utility model will fall within the protection scope of the present utility model.

[0023] In the present utility model, unless otherwise specified, all parts and percentages are in weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments are conventional methods in the art unless otherwise specified. The components or equipment in the following embodiments are general standard parts or components known to those skilled in the art unless otherwise specified, and their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0024] The following will make a detailed description of the embodiments of the present utility model in conjunction with the accompanying drawings. In the following detailed description, for the sake of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present utility model. However, one or more embodiments can also be implemented by those skilled in the art without these specific details.

[0025] An embodiment of the present utility model discloses an electric lift, as Figures 1-4 shown. The electric lift includes a frame 1, a driving platform 2, a lifting platform 3, a driving module 4, a main transmission module 5, a driven module 6, a first roller chain 7, a second roller chain 8, and a counterweight 9. The driving platform 2 is fixedly connected to the top of the frame 1, and the lifting platform 3 is arranged below the driving platform 2 and can perform lifting displacement relative to the frame 1. The driving module 4, the main transmission module 5, and the driven module 6 are all arranged on the driving platform 2. The output end of the driving module 4 is connected to the main transmission module 5. The first roller chain 7 meshes with the main transmission module 5 and the driven module 6 respectively, and both ends of the first roller chain 7 are connected to the counterweight 9 and the lifting platform 3 respectively. The second roller chain 8 meshes with the main transmission module 5, and both ends of the second roller chain 8 are connected to the counterweight 9 and the lifting platform 3 respectively. The counterweight 9 is arranged on the side of the frame 1. A sliding member 10 is provided at the end of the counterweight 9. The counterweight 9 is slidably connected to the side of the frame 1 through the sliding member 10. The sliding member 10 includes two rollers 1001 hinged to the counterweight 9. The extension lines of the hinge axes of the two rollers 1001 intersect, and both rollers 1001 abut against the frame 1. The outer peripheral part of the roller 1001 is made of an elastic material.

[0026] Through the sliding member 10 structure between the counterweight 9 and the side of the frame 1, the sliding connection between the counterweight 9 and the frame 1 is made more stable, and the sliding displacement is smoother. Compared with the sliders or guide rails used in the prior art, the two rollers 1001 of the sliding member 10 can reduce the friction between the counterweight 9 and the side of the frame 1 and improve the energy efficiency of the system. The rollers 1001 with the extended lines of the two hinge axes intersecting make the abutment against the side of the frame 1 more stable, and the rollers 1001 can better adapt to the minor deformation of the surface of the frame 1 and reduce the probability of the sliding displacement of the counterweight 9 getting stuck. The counterweight 9 and the lifting platform 3 are connected in different ways through the first roller chain 7 and the second roller chain 8, improving the balance performance between the counterweight 9 and the lifting platform 3 and the uniformity of the load distribution, and realizing the smoothness of the lifting movement of the lifting platform 3.

[0027] In this embodiment, the drive module 4 and the main transmission module 5 are arranged on one side adjacent to the drive platform 2, and the driven module 6 is arranged on the other side adjacent to the drive platform 2. The counterweight 9 is arranged on one side of the frame 1 adjacent to the drive module 4 and the main transmission module 5. The layout of the drive module 4, the main transmission module 5, the driven module 6 and the counterweight 9 on the drive platform 2 can improve the uniformity of the weight distribution of the entire electric elevator and is easy to adjust the counterweight.

[0028] In this embodiment, the sliding member 10 further includes a roller frame 1002 fixedly connected to the counterweight 9. The two side portions of the roller frame 1002 form a first included angle, and the two rollers 1001 are respectively hinged to the two side portions of the roller frame 1002. On the side of the frame 1, there is a guide frame 101 fixedly connected to the frame 1. The two side portions of the guide frame 101 form a second included angle, and the outer peripheral surfaces of the two rollers 1001 respectively abut against the two side portions of the guide frame 101. The guide frame 101 can better cooperate with the setting of the two rollers 1001.

[0029] In this embodiment, there are four sliding members 10, and the four sliding members 10 are respectively located at the four ends of the counterweight 9; there are two guide frames 101, and the two guide frames 101 are respectively located at the two ends on the same side of the frame 1. The setting of the four sliding members 10 improves the contact uniformity between the counterweight 9 and the guide frame 101 and reduces local stress concentration.

[0030] In this embodiment, on the side of the frame 1, there is also a protective frame 102 fixedly connected to the frame 1. The protective frame 102 covers the outside of the counterweight 9 and the guide frame 101. The protective frame 102 improves safety and plays a protective role for the counterweight 9, the sliding member 10 and the guide frame 101.

[0031] In this embodiment, the drive module 4 includes a drive motor 401 and a speed reducer 402. The output end of the drive motor 401 is connected to the input end of the speed reducer 402. The speed reducer 402 has two opposite output ends. There are two main drive modules 5, and the two main drive modules 5 are respectively arranged on both sides of the speed reducer 402. The two output ends of the speed reducer 402 are respectively connected to one main drive module 5. The dual-output design of the drive module 4 enables more balanced power transmission and reduces the risk of excessive load on one side of the lifting platform 3 and the counterweight 9.

[0032] In this embodiment, the main drive module 5 includes a main drive shaft 501, a first driving sprocket 502, a second driving sprocket 503, and a driving sprocket seat 504. One end of the main drive shaft 501 is fixedly connected to an output end of the speed reducer 402. The other end of the main drive shaft 501 is respectively fixedly connected to the first driving sprocket 502 and the second driving sprocket 503. The main drive shaft 501, the first driving sprocket 502, and the second driving sprocket 503 are all hinged to the driving sprocket seat 504. The bottom of the driving sprocket seat 504 is fixedly connected to the driving platform 2.

[0033] In this embodiment, there are two driven modules 6, two first roller chains 7, and two second roller chains 8. The two driven modules 6 are respectively meshed with one main drive module 5 through a first roller chain 7, and the two second roller chains 8 are respectively meshed with one main drive module 5.

[0034] In this embodiment, the driven module 6 includes a driven sprocket 601 and a driven sprocket seat 602. The driven sprocket 601 is hinged to the driven sprocket seat 602. The bottom of the driven sprocket seat 602 is fixedly connected to the driving platform 2.

[0035] The working principle of this electric elevator is as follows: When the drive motor 401 is started, the rotational output of the drive motor 401 is decelerated by the speed reducer 402 and then transmitted to the two first driving sprockets 502 and the two second driving sprockets 503 on both sides through the two main drive shafts 501 respectively. The rotation of the first driving sprocket 502 displaces the first roller chain 7, and the rotation of the second driving sprocket 503 displaces the second roller chain 8, thereby causing the lifting platform 3 connected to the ends of the first roller chain 7 and the second roller chain 8 to rise or fall. Synchronously, the counterweight 9 connected to the other ends of the first roller chain 7 and the second roller chain 8 rises or falls accordingly. It should be noted that the connection between the end of the roller chain and the counterweight 9 and the lifting platform 3 is achieved through a connecting piece. The bottom of the connecting piece is fixedly connected to the counterweight 9 / lifting platform 3, and the top of the connecting piece is hinged to the end of the roller chain, thereby ensuring that the end of the roller chain has the necessary displacement freedom.

[0036] In this article, specific examples are used to elaborate on the principle and implementation of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. An electric lift, characterized in that: The electric lift comprises a frame (1), a driving platform (2), a lifting platform (3), a driving module (4), a main transmission module (5), a driven module (6), a first roller chain (7), a second roller chain (8) and a counterweight (9); the driving platform (2) is fixedly connected to the top of the frame (1); the lifting platform (3) is arranged below the driving platform (2) and can be lifted and lowered relative to the frame (1); the driving module (4), the main transmission module (5) and the driven module (6) are all arranged on the driving platform (2); the output end of the driving module (4) is connected to the main transmission module (5); the first roller chain (7) is connected to the main transmission module (5) and the second roller chain (8) respectively; The driven module (6) is meshed with the first roller chain (7), and the two ends of the first roller chain (7) are respectively connected to the counterweight block (9) and the lifting platform (3); the second roller chain (8) is meshed with the main transmission module (5), and the two ends of the second roller chain (8) are respectively connected to the counterweight block (9) and the lifting platform (3); the counterweight block (9) is arranged on the side of the frame (1), and a sliding component (10) is provided at the end of the counterweight block (9); the counterweight block (9) is slidably connected to the side of the frame (1) through the sliding component (10), and the sliding component (10) includes two rollers (1001) hinged to the counterweight block (9), and the extension lines of the hinge axes of the two rollers (1001) intersect, and the two rollers (1001) are both against the frame (1).

2. An electric lift according to claim 1, characterized in that: The driving module (4) and the main transmission module (5) are arranged adjacent to one side of the driving platform (2), the driven module (6) is arranged adjacent to the other side of the driving platform (2), and the counterweight (9) is arranged on one side of the frame (1) adjacent to the driving module (4) and the main transmission module (5).

3. An electric lift according to claim 1, characterized in that: The sliding component (10) further comprises a roller frame (1002) fixedly connected to the counterweight (9), the two sides of the roller frame (1002) forming a first angle, and the two rollers (1001) are respectively hinged to the two sides of the roller frame (1002); the side of the frame (1) is provided with a guide frame (101) fixedly connected to the frame (1), the two sides of the guide frame (101) forming a second angle, and the outer peripheral surfaces of the two rollers (1001) respectively abut against the two sides of the guide frame (101).

4. An electric lift according to claim 3, characterized in that: There are four sliding components (10), which are respectively located at the four ends of the counterweight (9); there are two guide frames (101), which are respectively located at the two side ends of the same side of the frame (1).

5. An electric lift according to claim 3, characterized in that: The side of the frame (1) is also provided with a protection frame (102) fixedly connected to the frame (1), and the protection frame (102) is arranged to cover the outside of the counterweight block (9) and the guide frame (101).

6. An electric lift according to claim 1, characterized in that: The drive module (4) comprises a drive motor (401) and a reducer (402); the output end of the drive motor (401) is connected to the input end of the reducer (402); the reducer (402) has two opposite output ends; two main transmission modules (5) are provided, and the two main transmission modules (5) are respectively arranged on both sides of the reducer (402); and the two output ends of the reducer (402) are respectively connected to one main transmission module (5).

7. An electric lift according to claim 6, characterized in that: The main transmission module (5) comprises a main transmission shaft (501), a first driving sprocket (502), a second driving sprocket (503) and a driving sprocket seat (504); one end of the main transmission shaft (501) is fixedly connected to an output end of the reducer (402); the other end of the main transmission shaft (501) is fixedly connected to the first driving sprocket (502) and the second driving sprocket (503), respectively; the main transmission shaft (501), the first driving sprocket (502) and the second driving sprocket (503) are all hinged to the driving sprocket seat (504); and the bottom of the driving sprocket seat (504) is fixedly connected to the driving platform (2).

8. An electric lift according to claim 6, characterized in that: The driven module (6), the first roller chain (7) and the second roller chain (8) are each provided with two, and the two driven modules (6) are respectively engaged with a main transmission module (5) through a first roller chain (7), and the two second roller chains (8) are respectively engaged with a main transmission module (5).

9. An electric lift according to claim 8, characterized in that: The driven module (6) comprises a driven sprocket (601) and a driven sprocket seat (602); the driven sprocket (601) is hinged to the driven sprocket seat (602); and the bottom of the driven sprocket seat (602) is fixedly connected to the driving platform (2).

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