Dual-drive lifting device

Abstract

The utility model provides a dual-drive lifting device, and relates to the field of lifting devices. The dual-drive lifting device comprises a lifting column; the speed reducer is arranged on the lifting column; the transmission mechanism is connected with the output end of the speed reducer, the transmission mechanism is configured to be connected with an execution part, and the transmission mechanism converts rotation of the output end of the speed reducer into vertical movement of the execution part; the first driving mechanism is connected with the input end of the speed reducer; and the second driving mechanism is connected with the input end of the speed reducer, and when the first driving mechanism does not work, the second driving mechanism is started to work. And it is guaranteed that after one driving mechanism breaks down and loses efficacy, the lifting device can still continue to complete the lifting work of the workpiece, the continuity of the lifting work is improved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of lifting devices, in particular to a double-drive lifting device. Background Art

[0002] At present, lifting devices are widely used and very common. Screw nut lifting devices are mainly used in machine tools, and gear rack lifting devices are mainly used in hoists and other equipment.

[0003] The lifting device is usually a driving mechanism that drives the actuator to lift through a transmission mechanism. When the driving mechanism is damaged, the lifting device cannot drive the actuator to lift and lower, and needs to be repaired. In some special environments, such as radioactive environments, working in a closed hot room, and there is a retaining wall inside the hot room, once the motor of the lifting device fails, it is impossible to automatically remove the Z-axis lifting column of the capping device through remote operation for evacuation and maintenance. Utility Model Content

[0004] In view of the above shortcomings of the prior art, the utility model provides a dual-drive lifting device to improve the technical problem that the driving mechanism of the prior lifting device fails and cannot drive the actuator to rise and fall.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a dual-drive lifting device, including a lifting column; a reducer, which is arranged on the lifting column; a transmission mechanism, which is connected to the output end of the reducer, and the transmission mechanism is configured to be connected to an actuator, and the transmission mechanism converts the rotation of the output end of the reducer into the up and down movement of the actuator; a first drive mechanism, which is connected to the input end of the reducer; a second drive mechanism, which is connected to the input end of the reducer, and when the first drive mechanism is not working, the second drive mechanism starts to work.

[0006] In an exemplary embodiment of the present application, the first driving mechanism includes a first motor and a first clutch, and the first clutch is connected to an input end of the reducer.

[0007] In an exemplary embodiment of the present application, the second driving mechanism includes a second motor and a second clutch, and the second clutch is connected to the input end of the reducer.

[0008] In an exemplary embodiment of the present application, the reducer is a worm gear reducer, the input end of the reducer is a worm, and the two ends of the worm are respectively connected to the first driving mechanism and the second driving mechanism.

[0009] In an exemplary embodiment of the present application, the transmission mechanism includes a ball screw and a nut, the ball screw is arranged on the lifting column through a fixing seat, and one end of the ball screw is connected to the output end of the reducer.

[0010] In an exemplary embodiment of the present application, a linear guide rail is disposed on the lifting column, and the linear guide rail is disposed on both sides of the ball screw.

[0011] In an exemplary embodiment of the present application, four linear guide rails are provided, and sliders are slidably connected to the linear guide rails, which are respectively provided on a side where the ball screw is provided on the lifting column and a side away from the ball screw.

[0012] In an exemplary embodiment of the present application, a limit frame is provided on the lifting column, and the limit frame limits the lifting height of the execution part.

[0013] In an exemplary embodiment of the present application, the limit frame is arranged on a side of the lifting column away from the ball screw, and the limit frame is arranged on both upper and lower sides of the linear guide rail.

[0014] In an exemplary embodiment of the present application, a mounting plate is provided on the top of the lifting column, the reducer is provided on the mounting plate, and the mounting plate extends out of the lifting column on a side of the lifting column where the transmission mechanism is provided; and a rib fixed to the lifting column is provided on the bottom surface of the portion of the mounting plate extending out of the lifting column.

[0015] In combination with the prior art, the beneficial effects of the utility model are:

[0016] The existing lifting mechanism is a single-drive mechanism. When the drive fails, the executive part cannot be lifted and needs to be repaired immediately, which affects the use. The dual-drive lifting device of the present application includes a first drive mechanism and a second drive mechanism. The first drive mechanism and the second drive mechanism are both connected to the input end of the reducer. When the first drive mechanism fails, the second drive mechanism is immediately started to drive the executive part to lift and lower through the reducer and the transmission mechanism, thereby completing the lifting task of the workpiece, etc., and the maintenance can be carried out after the work is completed to ensure the normal operation of the work and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a front view of an exemplary dual-drive lifting device of the present application;

[0019] Figure 2 This is a left view of an exemplary dual-drive lifting device of the present application;

[0020] Figure 3 A rear view of an exemplary dual-drive lifting device of the present application;

[0021] Figure 4 This is a three-dimensional schematic diagram of an exemplary dual-drive lifting device of the present application;

[0022] Figure 5 This is a three-dimensional schematic diagram from another angle of an exemplary dual-drive lifting device of the present application.

[0023] Component number description

[0024] 100. Lifting column;

[0025] 200, reducer;

[0026] 300, transmission mechanism; 310, ball screw; 320, nut; 330, fixed seat;

[0027] 400, first driving mechanism; 410, first motor; 420, first clutch;

[0028] 500, second driving mechanism; 510, second motor; 520, second clutch;

[0029] 600, linear guide;

[0030] 700, limit frame;

[0031] 800, mounting plate; 810, rib plate. DETAILED DESCRIPTION

[0032] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0033] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are in accordance with the prior art mastery of those skilled in the art and the description of the present invention, and any prior art methods, equipment and materials similar or equivalent to the methods, equipment and materials in the embodiments of the present invention can also be used to implement the present invention.

[0034] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present utility model without substantially changing the technical content.

[0035] The existing lifting devices are all single-drive. When the drive fails, the lifting device cannot complete the lifting, and the object to be lifted is in a state where it cannot be lifted. For general work scenarios, the problem can be solved by directly repairing the lifting device and replacing the drive mechanism. However, for special work scenarios, such as when the work is very urgent and the lifting work needs to be carried out continuously, the failure of the drive mechanism will cause the work to be unable to proceed. For some special environments, such as radioactive environments, a retaining wall is set in the hot chamber to separate it from the radiation environment. There is a gap in the retaining wall between the radiation environment and the hot chamber, and some structures pass through it to inspect and maintain the devices in the radiation environment. If the drive mechanism of the lifting device fails, the workpiece to be maintained will stay in mid-air, and the lifting device and the workpiece to be maintained cannot reach the hot chamber through the gap in the retaining wall, resulting in a dilemma. In view of this, the present application provides a dual-drive lifting device to ensure that when a drive mechanism fails, the lifting mechanism can continue to work, improve work efficiency, and expand application scenarios.

[0036] See also Figure 1 to Figure 5The dual-drive lifting device includes a lifting column 100, a reducer 200, a transmission mechanism, a first drive mechanism 400 and a second drive mechanism 500. The lifting column 100 provides support and assembly space for some components of the dual-drive lifting device. In one embodiment, the lifting column 100 is a hollow prism structure, and a certain installation space can also be provided in the hollow chamber to facilitate the layout of lines, etc. The reducer 200 is installed on the top of the lifting column 100. The reducer 200 increases the torque by reducing the speed, thereby increasing the output torque and increasing the load of the dual-drive lifting device. The transmission mechanism is connected to the output end of the reducer 200. The transmission mechanism is configured to connect the execution part. The execution part can be an object such as a workpiece to be lifted, or a component such as a clamp, an adsorption part, etc. that can fix the object to be lifted. The transmission mechanism converts the rotation of the output end of the reducer 200 into the up and down movement of the execution part, thereby realizing the up and down movement of the workpiece to be lifted. The first drive mechanism 400 is connected to the input end of the reducer 200. The second drive mechanism 500 is connected to the input end of the reducer 200, and when the first drive mechanism 400 is not working, the second drive mechanism 500 starts working. When the first drive mechanism 400 fails, the second drive mechanism 500 starts working, and continues to drive the actuator to move through the reducer 200 and the transmission mechanism to complete the lifting of the workpiece to be lifted. The dual-drive lifting device of the present application can ensure continuous operation, avoid the situation where the lifting work cannot be completed halfway, and improve work efficiency.

[0037] See also Figure 1 , Figure 3 and Figure 4 In one embodiment of the utility model, the first driving mechanism 400 includes a first motor 410 and a first clutch 420. The first clutch 420 is connected to the input end of the reducer 200. The first clutch 420 can be an electromagnetic clutch, a hydraulic clutch, a pneumatic clutch, etc. Preferably, the first clutch 420 is an electromagnetic clutch. The electromagnetic clutch has the advantages of fast action, fast response, and remote operation, so that the first motor 410 can be quickly combined with the reducer 200. When the first motor 410 needs to be driven, the first clutch 420 combines the first motor 410 with the reducer 200 to achieve the connection between the first motor 410 and the reducer 200.

[0038] See also Figure 1 , Figure 3 and Figure 4In one embodiment of the utility model, the second driving mechanism 500 includes a second motor 510 and a second clutch 520, and the second clutch 520 is connected to the input end of the reducer 200. Preferably, the second clutch 520 is an electromagnetic clutch, so that the second motor 510 and the reducer 200 can be combined when the second motor 510 is required to drive. The first motor 410 and the second motor 510 are redundant with each other. When one of the motors fails, the clutch connected to the failed motor is cut off, and the clutch connected to the non-faulty motor works, so that the non-faulty motor is combined with the reducer 200 to continue to complete the lifting work, thereby ensuring the continuity of the lifting work and avoiding the situation where the workpiece to be lifted is in the middle of the lifting position.

[0039] In one embodiment of the utility model, the reducer 200 is a worm gear reducer 200, the input end of the reducer 200 is a worm, and the two ends of the worm are respectively connected to the first drive mechanism 400 and the second drive mechanism 500. The worm gear reducer 200 has a large transmission ratio, which can effectively increase the load of the lifting device; the worm gear reducer 200 has a strong self-locking property, which reduces the risk of the actuator stalling and falling during the switching of the drive mechanism, and improves the safety of the lifting device. The two ends of the worm can be respectively connected to the first drive mechanism 400 and the second drive mechanism 500, such as respectively connected to the first clutch 420 and the second clutch 520, to facilitate the switching of the drive mechanism.

[0040] See also Figure 1 , Figure 2 and Figure 4 In one embodiment of the utility model, a mounting plate 800 is provided on the top of the lifting column 100. The mounting plate 800 can be integrally formed with the lifting column 100, or can be fixed to the lifting column 100 by welding, bolt connection, etc., or can be fixed to the lifting column 100 by other existing fixing methods. The reducer 200 is assembled on the mounting plate 800. Preferably, the reducer 200 is assembled on the mounting plate 800 by bolts, screws, etc. The mounting plate 800 extends out of the lifting column 100 at a side of the lifting column 100 where the transmission mechanism is arranged. The transmission mechanism is arranged at the front side of the lifting column 100. In order to facilitate the connection between the transmission mechanism and the reducer 200, the reducer 200 needs to extend to the front side of the lifting column 100. By extending the mounting plate 800 out of the lifting column 100, the assembly strength of the reducer 200 can be improved, and the safety can be improved. Furthermore, the mounting plate 800 is provided with an escape portion for accommodating the output end of the reducer 200 or the input end of the transmission mechanism to facilitate the connection between the reducer 200 and the transmission mechanism, thereby realizing the driving of the transmission mechanism by the first driving mechanism 400 or the second driving mechanism 500.

[0041] See also Figure 1 and Figure 2 Further, the bottom surface of the portion of the mounting plate 800 extending from the lifting column 100 is provided with a rib plate 810 fixed to the lifting column 100, the top of the rib plate 810 is fixed to the bottom of the mounting plate 800, and the side end of the rib plate 810 is fixed to the lifting column 100, thereby providing support for the portion of the mounting plate 800 extending from the lifting column 100, and improving the stability and firmness of the reducer 200. The rib plate 810 can be fixed to the mounting plate 800 and the lifting column 100 by welding or other fixing methods, which is not limited in the present application.

[0042] See also Figure 1 In one embodiment of the utility model, the transmission mechanism includes a ball screw 310 and a nut 320. The ball screw 310 is arranged on the lifting column 100 through a fixed seat 330. The fixed seat 330 is fixed on the lifting column 100. The ball screw 310 and the fixed seat 330 are rotatably connected through a bearing. One end of the ball screw 310 is connected to the output end of the reducer 200. Through the cooperation between the ball screw 310 and the nut 320, the rotation output by the reducer 200 is converted into the up and down movement of the nut 320. The nut 320 is connected to the actuator, thereby driving the actuator to move up and down to perform lifting work.

[0043] See also Figure 1 to Figure 5 In one embodiment of the utility model, the lifting column 100 is provided with a linear guide 600, and the linear guide 600 is provided on both sides of the ball screw 310. A slider is slidably connected to the linear guide 600, and the slider is fixed to the nut 320. The linear guide 600 cooperates with the slider to provide a guiding function for the nut 320, and can also reduce the shear force on the ball screw 310, reduce the failure rate, and increase the service life of the ball screw 310. In another embodiment of the present application, the slider and the nut 320 are integrally formed.

[0044] See also Figure 2 , Figure 3 and Figure 4In one embodiment of the utility model, four linear guides 600 are provided, which are respectively arranged on the side of the lifting column 100 where the ball screw 310 is provided and the side away from the ball screw 310, that is, two linear guides 600 are arranged on the front side of the lifting column 100 and on both sides of the ball screw 310, and the other two linear guides 600 are arranged on the rear side of the lifting column 100. Each linear guide 600 can be provided with a slider, and the sliders are respectively connected to the actuator, or a common slider can be slidably connected to the four linear guides 600, and the slider is connected to the actuator. The four linear guides 600 are symmetrically distributed on the lifting column 100, so as to improve the uniformity of force, improve the stability of the sliding connection between the slider and the linear guide 600, and prevent the slider and the linear guide 600 from being relatively tilted to cause the limit.

[0045] See also Figure 2 , Figure 3 and Figure 5 In one embodiment of the utility model, a limit frame 700 is provided on the lifting column 100, and the limit frame 700 limits the lifting height of the actuator. By providing the limit frame 700, the stroke of the actuator is ensured to be within a preset range, thereby improving the safety of operation.

[0046] See also Figure 2 , Figure 3 and Figure 5 In one embodiment of the utility model, the limit frame 700 is arranged on the side of the lifting column 100 away from the ball screw 310, and the limit frame 700 is arranged on the upper and lower sides of the linear guide rail 600. The slider is limited by the limit frame 700 to achieve the stroke limit of the actuator and improve the safety of operation.

[0047] The utility model is a dual-drive lifting device, which has the beneficial effects of ensuring that after a driving mechanism fails, the lifting device can still continue to complete the lifting of the workpiece, improving the continuity of the lifting work and improving the work efficiency. Therefore, the utility model effectively overcomes some practical problems in the prior art and has a high utilization value and use significance. The above embodiments are only illustrative of the principle and efficacy of the utility model, and are not used to limit the utility model. Anyone familiar with this technology can modify or change the above embodiments without violating the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. A dual-drive lifting device, characterized in that: include: Lifting columns; A reducer, arranged on the lifting column; A transmission mechanism connected to the output end of the reducer, the transmission mechanism being configured to be connected to an actuator, and the transmission mechanism converts the rotation of the output end of the reducer into an up and down movement of the actuator; A first driving mechanism connected to an input end of the reducer; The second driving mechanism is connected to the input end of the reducer, and when the first driving mechanism is not working, the second driving mechanism starts to work.

2. The dual-drive lifting device according to claim 1, characterized in that: The first driving mechanism includes a first motor and a first clutch, and the first clutch is connected to the input end of the reducer.

3. The dual-drive lifting device according to claim 1, characterized in that: The second driving mechanism includes a second motor and a second clutch, and the second clutch is connected to the input end of the reducer.

4. The dual-drive lifting device according to claim 1, characterized in that: The reducer is a worm gear reducer, the input end of the reducer is a worm, and the two ends of the worm are respectively connected to the first driving mechanism and the second driving mechanism.

5. The dual-drive lifting device according to claim 1, characterized in that: The transmission mechanism comprises a ball screw and a nut. The ball screw is arranged on the lifting column through a fixing seat. One end of the ball screw is connected to the output end of the reducer.

6. The dual-drive lifting device according to claim 5, characterized in that: The lifting column is provided with a linear guide rail, a sliding block is slidably connected to the linear guide rail, and the linear guide rail is arranged on both sides of the ball screw.

7. The dual-drive lifting device according to claim 6, characterized in that: The linear guide rails are provided in four numbers, and are respectively arranged on one side of the lifting column where the ball screw is arranged and on the other side away from the ball screw.

8. The dual-drive lifting device according to claim 7, characterized in that: A limit frame is arranged on the lifting column, and the limit frame limits the lifting height of the actuator.

9. The dual-drive lifting device according to claim 8, characterized in that: The limiting frame is arranged on the side of the lifting column away from the ball screw, and the limiting frame is arranged on the upper and lower sides of the linear guide rail.

10. The dual-drive lifting device according to claim 1, characterized in that: A mounting plate is arranged on the top of the lifting column, the reducer is arranged on the mounting plate, and the mounting plate extends out of the lifting column on the side where the transmission mechanism is arranged on the lifting column; a rib plate fixed to the lifting column is arranged on the bottom surface of the mounting plate extending out of the lifting column.

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