An electric lifting mechanism

Abstract

This application discloses an electric lifting mechanism, relating to the field of material handling equipment technology. It includes a bidirectional motor with two output shafts located on either side of the motor. A drive shaft is fixedly connected to each of the two output shafts, and a screw jack is fixedly connected to the end of each drive shaft furthest from the motor. The bidirectional motor drives the screw jacks on both sides to perform synchronous lifting actions. A fixed frame is installed on the top of each screw jack. Compared to existing hydraulic and pneumatic mechanisms, this application avoids the problems of liquid or air leakage during maintenance or daily use, meeting the requirements of working conditions in narrow and compact spaces with high environmental requirements (such as preventing air and liquid leaks). Secondly, the electric structure eliminates the need for stabilizing mechanisms, hydraulic / pneumatic pumps and valves, thus improving overall space utilization and enabling the layout required for working in narrow and compact spaces.

Description

Technical Field

[0001] This invention relates to the field of material handling equipment technology, specifically an electric lifting mechanism. Background Technology

[0002] A lifting mechanism is a common material handling device used on various industrial vehicles with lifting functions for the smooth handling of large objects and for lifting and installation.

[0003] In the automated material handling industry, narrow and compact handling spaces are frequently encountered. In such cases, where environmental requirements are high (such as preventing air and liquid leaks), it is necessary to avoid the problem of media leakage.

[0004] However, the common hydraulic and pneumatic lifting mechanisms in existing technologies have a high failure rate and cannot achieve lifetime maintenance-free operation. Maintenance personnel are required to maintain the hydraulic and pneumatic lifting mechanisms, and leakage of liquid or air is prone to occur during the maintenance process. Even during daily operation, the hydraulic and pneumatic lifting mechanisms may leak liquid or air, which cannot meet the requirements of avoiding leakage of liquid or air. Secondly, existing hydraulic and pneumatic mechanisms generally require the use of stabilizing mechanisms, hydraulic / pneumatic pumps and valves, etc., which have certain space requirements and cannot achieve the layout required for working in narrow and compact spaces.

[0005] In summary, common hydraulic and pneumatic lifting mechanisms are no longer suitable for certain environments with special requirements, necessitating a new lifting mechanism to enable material handling under these special conditions. Summary of the Invention

[0006] The purpose of this invention is to provide an electric lifting mechanism to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an electric lifting mechanism, comprising: A bidirectional motor has two output shafts, which are located on both sides of the bidirectional motor. The bidirectional motor has two output shafts that are fixedly connected to drive shafts. The ends of the two drive shafts that are away from the bidirectional motor are fixedly connected to screw jacks. The bidirectional motor drives the screw jacks on both sides to perform lifting and lowering actions synchronously. The top of each screw jack is equipped with a fixed frame, and the long axis of both sets of fixed frames is perpendicular to the axis of the bidirectional motor output shaft. Support cover plate, fixedly installed on the upper part of the fixing frame; The lower ends of both sides of the fixed frame along the long axis are symmetrically provided with respect to the screw jack to improve the stability of the lifting process.

[0008] Preferably, the guide assembly includes a mounting base installed on the side of the fixed frame facing the screw jack, a linear bearing is fixedly connected to the bottom of the mounting base, a linear guide shaft that moves linearly relative to the linear bearing is movably sleeved inside the linear bearing, and the bottom of the linear guide shaft is fixedly connected to the platform where the electric lifting mechanism is located.

[0009] Preferably, the bottom of each screw jack is fixedly connected to a support frame.

[0010] Preferably, the bottom of the pad frame is on the same horizontal plane as the bottom of the bidirectional motor.

[0011] Preferably, the upper ends of both sides of the fixed frame along the long axis are symmetrically provided with material rack positioning blocks about the screw jack, and the material rack positioning blocks are detachably connected to the material rack carrying the goods.

[0012] Preferably, the two output shafts on both sides of the bidirectional motor are coaxially arranged.

[0013] Preferably, the two output shafts of the bidirectional motor rotate in opposite directions, and the two screw lifts also rotate in opposite directions, so that the two screw lifts perform lifting actions synchronously when the bidirectional motor is working.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This application features a simple structure, easy maintenance, and high synchronization. Compared to existing hydraulic and pneumatic mechanisms, it avoids the problems of liquid or air leakage during maintenance or daily use, meeting the requirements of working conditions in narrow and compact spaces with high requirements for the surrounding environment (such as eliminating air and liquid leakage). Secondly, existing hydraulic and pneumatic mechanisms generally require the use of stabilizing mechanisms, hydraulic / pneumatic pumps and valves, etc., which have certain space requirements and cannot achieve the layout required for working in narrow and compact spaces. However, this application adopts an electric structure, which does not require stabilizing mechanisms, hydraulic / pneumatic pumps and valves, etc., thus improving the overall space occupancy and enabling the layout required for working in narrow and compact spaces. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention from a bottom view; Figure 2 This is a schematic diagram of the structure of the present invention after removing the supporting cover plate on one side; Figure 3 This is a front view of the overall structure of the present invention; Figure 4 This is a left view of the overall structure of the present invention; Figure 5 This is a top view of the overall structure of the present invention.

[0016] In the diagram: 1. Bidirectional motor; 2. Screw jack; 3. Support cover plate; 4. Fixing frame; 5. Mounting base; 6. Linear guide shaft; 7. Linear bearing; 8. Pad frame; 9. Material rack positioning block; 10. Drive shaft. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Please see Figure 1-5 In this embodiment of the invention, an electric lifting mechanism includes: The bidirectional motor 1 has two output shafts, which are located on both sides of the bidirectional motor 1. The bidirectional motor 1 has two output shafts that are fixedly connected to drive shafts 10. The ends of the two drive shafts 10 that are away from the bidirectional motor 1 are fixedly connected to screw jacks 2. The bidirectional motor 1 drives the screw jacks 2 on both sides to perform lifting and lowering actions synchronously. The top of each screw jack 2 is equipped with a fixed frame 4, and the long axis of both sets of fixed frames 4 is perpendicular to the axis of the output shaft of the bidirectional motor 1. The cover plate 3 is fixedly installed on the upper part of the fixing frame 4; The lower ends of both sides of the fixed frame 4 along the long axis are symmetrically provided with guide components about the screw jack 2 to improve the stability of the lifting process.

[0020] This electric lifting mechanism consists of a bidirectional motor 1, a screw jack assembly 2, a fixed frame 4, and a support cover plate 3. It is used on various industrial vehicles with lifting functions for the smooth handling and installation of large objects. The electric lifting mechanism uses a single power source to achieve synchronous lifting of the entire plane. Specifically, the two output shafts of the bidirectional motor 1 are connected to two screw jacks 2 via drive shafts 10. Fixed frames 4 are bolted to the top of each screw jack 2, and the long axis of both sets of fixed frames 4 is perpendicular to the axis of the output shaft of the bidirectional motor 1. The support cover plate 3 is bolted to the upper part of the fixed frame 4. To improve stability during lifting, two guide components are added to both sides of the fixed frame 4. A bidirectional motor 1 drives two output shafts to rotate, which in turn drive a transmission shaft 10 fixedly connected to it to rotate, further driving two screw jacks 2. The screw jacks 2, with their output ends facing upwards and extending, synchronously lift the fixed frame 4, the supporting cover plate 3, and the guide assembly. Materials are placed on the two fixed frames 4, thus achieving lifting and lowering of materials during transport. Throughout the lifting process, the supporting cover plate 3 provides protection. The bidirectional motor 1 and screw jacks 2 are existing technologies, and their principles will not be elaborated here.

[0021] This application features a simple structure, easy maintenance, and high synchronization. Compared to existing hydraulic and pneumatic mechanisms, it avoids the problems of liquid or air leakage during maintenance or daily use, meeting the requirements of working conditions in narrow and compact spaces with high requirements for the surrounding environment (such as eliminating air and liquid leakage). Secondly, existing hydraulic and pneumatic mechanisms generally require the use of stabilizing mechanisms, hydraulic / pneumatic pumps and valves, etc., which have certain space requirements and cannot achieve the layout required for working in narrow and compact spaces. However, this application adopts an electric structure, which does not require stabilizing mechanisms, hydraulic / pneumatic pumps and valves, etc., thus improving the overall space occupancy and enabling the layout required for working in narrow and compact spaces.

[0022] like Figure 1 and Figure 2 As shown, the guide assembly includes a mounting base 5 installed on the side of the fixed frame 4 facing the screw jack 2. A linear bearing 7 is fixedly connected to the bottom of the mounting base 5. A linear guide shaft 6 that moves linearly relative to the linear bearing 7 is movably sleeved inside the linear bearing 7. The bottom of the linear guide shaft 6 is fixedly connected to the platform where the electric lifting mechanism is located.

[0023] Specifically, the mounting base 5 is bolted to the side of the fixed frame 4 facing the screw jack 2. A linear bearing 7 is fixedly connected to the bottom of the mounting base 5. A linear guide shaft 6, which moves linearly relative to the linear bearing 7, is movably sleeved inside the linear bearing 7. The bottom of the linear guide shaft 6 is fixedly connected to the platform of the electric lifting mechanism. During operation, the bidirectional motor 1 drives the two screw jacks 2, causing their output ends to move upwards in a linear motion. This causes the fixed frame 4, the support cover plate 3, and the guide components to rise synchronously. After the fixed frame 4 rises, the linear bearing 7, which is fixedly connected to it, rises as well. The bottom of the linear guide shaft 6 is fixedly connected to the platform of the electric lifting mechanism, allowing the linear bearing 7 and the linear guide shaft 6 to move linearly relative to each other. Because the four guide components are arranged in a rectangular shape, a stable support beam structure is formed, greatly improving the ability to resist overturning moments and further ensuring the stability of the electric lifting mechanism during the lifting process.

[0024] like Figure 2 As shown, the bottom of the screw jack 2 is fixedly connected to a support frame 8. The bottom of the support frame 8 is on the same horizontal plane as the bottom of the bidirectional motor 1.

[0025] Specifically, by fixing and connecting the pads 8 at the bottom of the screw jack 2, the structural strength of both sides of the electric lifting mechanism can be improved, preventing the problem that the drive shaft 10 is easily broken when it is supported by only the drive shaft 10 after the material is placed on it, and further improving the overall stability of the electric lifting mechanism.

[0026] like Figure 1 and Figure 2 As shown, the upper ends of both sides of the fixed frame 4 along the long axis are symmetrically provided with material rack positioning blocks 9 about the screw jack 2, and the material rack positioning blocks 9 are detachably connected to the material rack carrying the goods.

[0027] Specifically, the upper ends of both sides of the fixed frame 4 along the long axis are symmetrically provided with material rack positioning blocks 9 about the screw jack 2. The four material rack positioning blocks 9 are arranged in a rectangle. The slots or threaded grooves on the material rack positioning blocks 9 can be used to cooperate with the locking blocks or bolts at the bottom of the material rack, so that the material rack positioning blocks 9 can be detachably connected to the material rack carrying the goods. This facilitates the installation of different types of material racks, makes it easy to replace them, and improves the versatility of the electric lifting mechanism.

[0028] like Figure 2 As shown, the two output shafts on both sides of the bidirectional motor 1 are coaxially arranged. The two output shafts of the bidirectional motor 1 rotate in opposite directions, and the two screw lifts 2 also rotate in opposite directions. When the bidirectional motor 1 is working, the two screw lifts 2 perform lifting and lowering actions synchronously.

[0029] Specifically, by using the two output shafts on both sides of the bidirectional motor 1 to be set coaxially with opposite rotation directions, the symmetry and stability of the overall electric lifting mechanism can be guaranteed, and the safety of operation can be improved. In order to match the two output shafts with opposite rotation directions, and to ensure that the electric lifting mechanism is raised and lowered synchronously on both sides, the screw jack 2 also rotates in opposite directions.

[0030] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0031] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. An electric lifting mechanism, characterized in that, include: A bidirectional motor (1) has two output shafts, which are located on both sides of the bidirectional motor (1). The bidirectional motor (1) has two output shafts that are fixedly connected to drive shafts (10), and the ends of the two drive shafts (10) that are away from the bidirectional motor (1) are fixedly connected to screw jacks (2). The bidirectional motor (1) drives the screw jacks (2) on both sides to perform lifting and lowering actions synchronously. The top of the screw jack (2) is equipped with a fixed frame (4), and the long axis of both fixed frames (4) is perpendicular to the axis of the output shaft of the bidirectional motor (1). The cover plate (3) is fixedly installed on the upper part of the fixing frame (4); The lower ends of both sides of the fixed frame (4) along the long axis are symmetrically provided with guide components to improve the stability of the lifting process about the screw jack (2).

2. The electric lifting mechanism according to claim 1, characterized in that: The guide assembly includes a mounting base (5) installed on the side of the fixed frame (4) facing the screw jack (2), a linear bearing (7) is fixedly connected to the bottom of the mounting base (5), a linear guide shaft (6) that moves relatively linearly with the linear bearing (7) is movably sleeved inside the linear bearing (7), and the bottom of the linear guide shaft (6) is fixedly connected to the platform where the electric lifting mechanism is located.

3. The electric lifting mechanism according to any one of claims 1 or 2, characterized in that: The bottom of each screw jack (2) is fixedly connected to a pad (8).

4. The electric lifting mechanism according to claim 3, characterized in that: The bottom of the pad (8) is on the same horizontal plane as the bottom of the bidirectional motor (1).

5. The electric lifting mechanism according to claim 1, characterized in that: The upper ends of both sides of the fixed frame (4) along the long axis are symmetrically provided with material rack positioning blocks (9) about the screw jack (2), and the material rack positioning blocks (9) are detachably connected to the material rack carrying the goods.

6. The electric lifting mechanism according to claim 1, characterized in that: The two output shafts on both sides of the bidirectional motor (1) are coaxially arranged.

7. The electric lifting mechanism according to claim 6, characterized in that: The two output shafts of the bidirectional motor (1) rotate in opposite directions, and the two screw lifts (2) also rotate in opposite directions. When the bidirectional motor (1) is working, the two screw lifts (2) perform lifting actions synchronously.

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