Turnover lifting appliance

Abstract

The utility model provides a turnover lifting appliance. The turnover lifting appliance comprises a first control device, a second control device, a walking mechanism, a lifting mechanism and a turnover mechanism, the walking mechanism is connected to the lifting mechanism and the turnover mechanism and is configured to drive the lifting mechanism and the turnover mechanism to move along a preset track; the lifting mechanism is configured to drive the turnover mechanism to ascend and descend in the direction perpendicular to the preset rail, and the turnover mechanism is configured to grab an object and turn over the grabbed object; the first control device controls the running of the walking mechanism, the lifting mechanism and the turnover mechanism; and when the first control device cannot control the running of the walking mechanism, the lifting mechanism and / or the turnover mechanism, the second control device is connected to the walking mechanism, the lifting mechanism and / or the turnover mechanism and controls the running of the walking mechanism, the lifting mechanism and / or the turnover mechanism. According to the turnover lifting appliance, when the first control device breaks down, the turnover lifting appliance can continue to operate through the controller of the second control device, and smooth operation of a whole production line is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hoisting equipment, and particularly relates to a turnover spreader. BACKGROUND

[0002] In a general assembly workshop of a vehicle production workshop, a turnover spreader is used for conveying a semi-finished vehicle body to meet the requirement of angle change of the vehicle in each production process and effectively meet the assembly requirement of ergonomics on the vehicle body. The turnover spreader usually adopts a frequency converter to drive a motor to run, realize walking, lifting and turnover of the turnover spreader, and meet normal operation of the turnover spreader. When a control system of the turnover spreader is not recoverable, the turnover spreader cannot be normally operated, which not only causes the turnover spreader to be unable to normally run, but also causes the running of the turnover spreader on the whole production line to be blocked, so that the production line is stopped running for a long time and the production progress is affected. SUMMARY

[0003] The technical problem to be solved by the application is to provide a turnover spreader to solve the problem that the turnover spreader cannot normally run when the turnover spreader is faulty, so that the production line is stopped running for a long time and the production progress is affected.

[0004] In order to solve or improve the above technical problems to some extent, according to one aspect of the application, a turnover spreader is provided, which comprises a first control device, a second control device, a walking mechanism, a lifting mechanism and a turnover mechanism.

[0005] The walking mechanism is connected to the lifting mechanism and the turnover mechanism and is configured to drive the lifting mechanism and the turnover mechanism to move along a preset track.

[0006] The lifting mechanism is configured to drive the turnover mechanism to lift in a direction perpendicular to the preset track, and the turnover mechanism is configured to grasp an object and turn the grasped object.

[0007] The first control device is connected to the walking mechanism, the lifting mechanism and the turnover mechanism to control the running of the walking mechanism, the lifting mechanism and the turnover mechanism.

[0008] When the first control device cannot control the running of the walking mechanism, the lifting mechanism and / or the turnover mechanism, the second control device is connected to the walking mechanism, the lifting mechanism and / or the turnover mechanism and controls the running of the walking mechanism, the lifting mechanism and / or the turnover mechanism.

[0009] In some embodiments, the turnover spreader further comprises a switching mechanism, the first control device and the second control device are both connected to the switching mechanism, when the first control device cannot control the traveling mechanism, the lifting mechanism and / or the turnover mechanism to operate, the switching mechanism connects the second control device to the traveling mechanism, the lifting mechanism and / or the turnover mechanism, so as to control the traveling mechanism, the lifting mechanism and / or the turnover mechanism to operate through the second control device.

[0010] In some embodiments, the second control device comprises a backup controller and a backup frequency converter, the backup frequency converter is connected to an input power supply and the traveling mechanism, the lifting mechanism and / or the turnover mechanism, the backup controller is connected to the backup frequency converter, so as to control the output of the backup frequency converter to drive the traveling mechanism, the lifting mechanism and / or the turnover mechanism to operate.

[0011] In some embodiments, the backup frequency converter is provided with an input terminal and an output terminal, when the first control device cannot control the traveling mechanism, the lifting mechanism and / or the turnover mechanism to operate, the backup frequency converter is connected to the input power supply through the input terminal, and is connected to the traveling mechanism, the lifting mechanism and / or the turnover mechanism through the output terminal.

[0012] In some embodiments, the backup controller is an operating handle, which is connected to the backup frequency converter through wired or wireless mode.

[0013] In some embodiments, the turnover mechanism comprises a clamping part and a turnover motor, the output end of the turnover motor is connected to the clamping part, so as to drive the clamping part to turn through the turnover motor;

[0014] The second control device comprises a backup turnover controller and a backup turnover frequency converter, when the first control device cannot control the turnover mechanism, the backup turnover frequency converter is connected to the input power supply and the turnover motor, the backup turnover controller is connected to the backup turnover frequency converter, so as to control the output of the backup turnover frequency converter to drive the turnover mechanism to operate.

[0015] In some embodiments, the lifting mechanism comprises a lifting device and a lifting motor, the lifting device is connected to the turnover mechanism, and the lifting motor is connected to the lifting device, so as to drive the lifting device to lift the turnover mechanism;

[0016] The second control device comprises a backup lifting controller and a backup lifting frequency converter, when the first control device cannot control the lifting mechanism, the backup lifting frequency converter is connected to the input power supply and the lifting motor, and the backup lifting controller is connected to the backup lifting frequency converter to control the output of the backup lifting frequency converter to drive the turnover mechanism to operate.

[0017] In some embodiments, the walking mechanism comprises a walking wheel and a walking motor, and the output end of the walking motor is connected to the walking wheel to drive the walking wheel to move along the preset guide rail.

[0018] The second control device comprises a backup walking controller and a backup walking frequency converter, when the first control device cannot control the walking mechanism, the backup walking frequency converter is connected to the input power supply and the walking motor, and the backup walking controller is connected to the backup walking frequency converter to control the output of the backup walking frequency converter to drive the walking mechanism to operate.

[0019] In some embodiments, the first control device comprises a main controller, a walking frequency converter, a lifting frequency converter and a turnover frequency converter.

[0020] The walking frequency converter, the lifting frequency converter and the turnover frequency converter are respectively connected to the walking mechanism, the lifting mechanism and the turnover mechanism, and the walking frequency converter, the lifting frequency converter and the turnover frequency converter are all connected to the input power supply, and the main controller is connected to the walking frequency converter, the lifting frequency converter and the turnover frequency converter to control the output of the walking frequency converter, the lifting frequency converter and the turnover frequency converter to drive the walking mechanism, the lifting mechanism and the turnover mechanism to operate.

[0021] In some embodiments, the first control device further comprises a walking encoder, a lifting encoder and a turnover encoder.

[0022] The walking encoder, the lifting encoder and the turnover encoder are all connected to the main controller, and are respectively used to acquire the walking distance signal of the walking mechanism, the lifting height signal of the lifting mechanism and the turnover angle signal of the turnover mechanism, and send them to the main controller.

[0023] Compared with the prior art, the present application has obvious advantages and beneficial effects. By the above technical scheme, the turnover spreader of the present application can achieve considerable technical progress and practicality, and has wide industrial utilization value, which at least has the following advantages:

[0024] When the first control device fails to control at least one of the walking mechanism, the lifting mechanism and the turnover mechanism, the second control device is arranged to continue to control the operation of at least one of the walking mechanism, the lifting mechanism and the turnover mechanism, effectively avoiding the situation that the whole production line cannot normally operate when a single turnover spreader cannot normally operate in the production line, ensuring the stability of the production line production progress, and the second control device is convenient to operate and simple in structure.

[0025] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail, and the accompanying drawings are as follows. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The structure schematic diagram of the turnover spreader of an embodiment of the present application is shown in the figure.

[0027] Figure 2 The structure schematic diagram of the turnover spreader of an embodiment of the present application is shown in the figure.

[0028] SYMBOL DESCRIPTION

[0029] 1, first control device; 10, main controller; 11, walking frequency converter; 12, lifting frequency converter; 13, turnover frequency converter; 14, walking encoder; 15, lifting encoder; 16, turnover encoder; 17, communication module; 18, man-machine interface; 19, display; 2, second control device; 20, backup controller; 200, operating handle; 21, backup frequency converter; 3, walking mechanism; 30, walking wheel; 31, walking motor; 4, lifting mechanism; 40, lifting device; 400, telescopic rod; 41, lifting motor; 5, turnover mechanism; 50, clamping part; 51, turnover motor; 6, input power supply; 7, external controller; 8, preset track. DETAILED DESCRIPTION

[0030] In the following description, many specific details are set forth in order to provide a thorough understanding of the present description. However, the present description can be practiced in many different ways beyond the specific embodiments described herein, and it is understood that the present description is not limited to the embodiments described herein. It is also understood that the present description can be practiced with other similar ways without departing from the scope of the present description.

[0031] The terminology used in one or more embodiments of this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the one or more embodiments of this specification. The singular forms “a,” “described,” and “the” as used in one or more embodiments of this specification and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in one or more embodiments of this specification refers to and includes any or all possible combinations of one or more associated listed items.

[0032] It should be understood that although the terms first, second, etc., may be used to describe various information in one or more embodiments of this specification, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first may also be referred to as second without departing from the scope of one or more embodiments of this specification, and similarly, second may also be referred to as first. Words such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Above," "below," "left," "right," etc., are only used to indicate relative positional relationships, and these relative positional relationships may also change accordingly when the absolute position of the described object changes.

[0033] This application provides a tilting lifting device, which includes a first control device and a second control device. When the first control device is operating normally, the tilting lifting device controls the traveling, lifting, and tilting of the device. When the first control device malfunctions (e.g., communication failure, power supply failure) and cannot control the tilting lifting device to operate normally, the second control device can be switched on to continue controlling the normal operation of the tilting lifting device, thus preventing the operation of the entire production line from being disrupted due to the failure of one of the tilting lifting devices.

[0034] To further illustrate the technical means and effects adopted by this application to achieve the intended purpose, the following detailed description of the specific implementation method and effects of the tilting lifting device proposed in this application is provided in conjunction with the accompanying drawings and preferred embodiments.

[0035] like Figure 1 and Figure 2 As shown, an embodiment of this application provides a tilting lifting device including: a first control device 1, a second control device 2, a traveling mechanism 3, a lifting mechanism 4, and a tilting mechanism 5.

[0036] The walking mechanism 3 is connected to the lifting mechanism 4 and the overturning mechanism 5, and is configured to move along a preset track 8, thereby driving the lifting mechanism 4 and the overturning mechanism 5 to move. The lifting mechanism 4 is configured to drive the overturning mechanism 5 to lift and lower in a direction perpendicular to the preset track 8. The overturning mechanism 5 is configured to grasp and overturn an object.

[0037] The first control device 1 is connected to the walking mechanism 3, the lifting mechanism 4, and the overturning mechanism 5 to control the operation of the walking mechanism 3, the lifting mechanism 4, and the overturning mechanism 5. When the first control device 1 fails to control at least one of the walking mechanism 3, the lifting mechanism 4, and the overturning mechanism 5, the second control device 2 is used to control at least one of the walking mechanism 3, the lifting mechanism 4, and the overturning mechanism 5 to ensure that the overturning spreader can continue to operate and avoid affecting other overturning spreaders.

[0038] It should be noted that the second control device 2 can be connected to at least one of the walking mechanism 3, the lifting mechanism 4, and the overturning mechanism 5 at all times, or can be connected to at least one of the walking mechanism 3, the lifting mechanism 4, and the overturning mechanism 5 after the first control device 1 fails.

[0039] When the second control device 2 is configured to be connected to at least one of the walking mechanism 3, the lifting mechanism 4, and the overturning mechanism 5 after the first control device 1 fails, the connection between the second control device 2 and at least one of the walking mechanism 3, the lifting mechanism 4, and the overturning mechanism 5 can be manually completed by a worker, or the first control device 1 can be switched to the second control device 2 by a pre-set switching mechanism, so that the second control device 2 is connected to at least one of the walking mechanism 3, the lifting mechanism 4, and the overturning mechanism 5.

[0040] In an embodiment, as shown in Figure 2 The walking mechanism 3 includes a plurality of walking wheels 30 and a walking motor 31. The overturning spreader is hung on the preset track 8 by the plurality of walking wheels 30, so that the overturning spreader moves by the rotation of the walking wheels 30. The number of walking motors 31 can be set to one or more according to actual use requirements. The output end of the walking motor 31 is connected to the walking wheels 30 to drive the walking wheels 30 to rotate.

[0041] In an embodiment, as shown in Figure 2 The lifting mechanism 4 includes a lifting device 40 and a lifting motor 41. The lifting device 40 is connected to the overturning mechanism 5, and the lifting motor 41 is connected to the lifting device 40 to drive the lifting device 40 to operate by the lifting motor 41, thereby realizing the lifting of the overturning mechanism 5.

[0042] Optionally, as shown in Figure 2As shown, the lifting device 40 is a plurality of telescopic rods 400. One end of the plurality of telescopic rods 400 is connected to the walking mechanism 3, and the other end is connected to the overturning mechanism 5, as shown in the figure Figure 2 As shown, the plurality of telescopic rods 400 are arranged in a cross manner. Of course, the plurality of telescopic rods 400 can also be arranged in a vertical manner, and the application is not limited to the specific arrangement of the telescopic rods 400.

[0043] Alternatively, the lifting device 40 is a fixed pulley and a chain, wherein one end of the chain is connected to the overturning mechanism 5 after passing through the fixed pulley, and the other end is connected to the lifting motor 41. The operation of the lifting motor 41 drives the chain to move around the fixed pulley, so as to realize the lifting of the overturning mechanism 5.

[0044] Of course, the lifting device 40 can also be other devices, which can realize the lifting of the overturning mechanism 5 under the driving of the lifting motor 41.

[0045] In an embodiment, as shown in the figure Figure 2 As shown, the overturning mechanism 5 includes a clamping part 50 and an overturning motor 51, wherein the clamping part 50 is used to clamp the object, and the output end of the overturning motor 51 is connected to the clamping part 50, so as to drive the rotation of the clamping part 50 through the operation of the overturning motor 51, and then complete the overturning of the clamped object.

[0046] Alternatively, the overturning motor 51 is provided with two, which are respectively connected to the two ends of the clamping part 50, so as to ensure the stability of the overturning of the clamping part 50 through the synchronous driving of the two overturning motors 51.

[0047] In some embodiments, the clamping part 50 has an arc-shaped structure, and a gear tooth is arranged on the outer side of the arc-shaped structure. The output end of the overturning motor 51 is provided with a gear, which is engaged with the gear tooth arranged on the outer side of the clamping part 50. During the operation of the overturning motor 51, the rotation of the gear at the output end drives the rotation of the clamping part 50, so as to realize the overturning of the clamped object.

[0048] In an embodiment, the first control device 1 includes a main controller 10, a walking frequency converter 11, a lifting frequency converter 12, and an overturning frequency converter 13.

[0049] As shown in the figure Figure 1 and Figure 2 As shown, the walking frequency converter 11 is connected to the input power supply 6 and the walking motor 31 of the walking mechanism 3, and the main controller 10 is connected to the walking frequency converter 11 to control the output of the walking frequency converter 11. The output of the walking frequency converter 11 drives the operation of the walking motor 31 of the walking mechanism 3, and then drives the walking wheel 30 to move along the preset track 8 through the walking motor 31, so as to realize the forward or backward movement of the overturning spreader.

[0050] The lifting frequency converter 12 is connected to the input power supply 6 and the lifting motor 41 of the lifting mechanism 4, and the main controller 10 is connected to the lifting frequency converter 12 to control the output of the lifting frequency converter 12, drive the operation of the lifting motor 41 of the lifting mechanism 4 through the output of the lifting frequency converter 12, and then drive the lifting of the turnover mechanism 5 through the lifting device 40.

[0051] The turnover frequency converter 13 is connected to the input power supply 6 and the turnover motor 51 of the turnover mechanism 5, and the main controller 10 is connected to the turnover frequency converter 13 to control the output of the turnover frequency converter 13, drive the operation of the turnover motor 51 of the turnover mechanism 5 through the output of the turnover frequency converter 13, and then drive the rotation of the clamping part 50 around the axis of the clamping part 50 through the turnover motor 51, to realize the turnover of the clamped object.

[0052] In the above embodiment, the input power supply 6 provides power for the walking frequency converter 11, the lifting frequency converter 12 and the turnover frequency converter 13 through the sliding contact line, and the walking frequency converter 11, the lifting frequency converter 12 and the turnover frequency converter 13 convert the input power into the frequency required for the operation of the walking motor 31, the lifting motor 41 and the turnover motor 51, respectively.

[0053] In an embodiment, as shown in Figure 1 The first control device 1 further includes a walking encoder 14, a lifting encoder 15 and a turnover encoder 16, and the walking encoder 14, the lifting encoder 15 and the turnover encoder 16 are all connected to the main controller 10. Among them, the walking encoder 14 detects the moving distance of the walking mechanism 3 when the walking mechanism 3 operates, and sends the detected walking distance to the main controller 10, so that the main controller 10 can more accurately control the operation of the walking mechanism 3 according to the walking distance.

[0054] The lifting encoder 15 detects the lifting height of the lifting mechanism 4 when the lifting mechanism 4 operates, and sends the detected lifting height to the main controller 10, so that the main controller 10 can more accurately control the operation of the lifting mechanism 4 according to the lifting height.

[0055] The turnover encoder 16 detects the turnover angle of the turnover mechanism 5 when the turnover mechanism 5 operates, and sends the detected turnover angle to the main controller 10, so that the main controller 10 can more accurately control the operation of the turnover mechanism 5 according to the turnover angle.

[0056] In some embodiments, as shown in Figure 1 The main controller 10 of the first control device 1 is connected to the external controller 7 through the communication module 17, and the external controller 7 can send control instructions to the main controller 10 of the first control device 1 based on the operation of the whole production line.

[0057] As shown in Figure 1As shown, the main controller 10 of the first control device 1 is connected to the external controller 7 by wireless communication, for example, by Bluetooth, WIFI, Zigbee, etc. Of course, the main controller 10 can also be connected to the external controller 7 by wired communication, and the present application is not limited to the specific connection mode of the main controller 10 and the external controller 7.

[0058] In some embodiments, as Figure 1 As shown, the first control device 1 further includes a display 19 connected to the main controller 10 through a human-machine interface 18 (HMI, Human Machine Interface) to display real-time data such as the running condition of the turnover spreader through the display 19. Optionally, the display 19 is an infrared receiving display 19.

[0059] In an embodiment, the second control device 2 includes a backup controller 20 and a backup frequency converter 21. The backup frequency converter 21 is connected to the input power supply 6 and at least one of the traveling mechanism 3, the lifting mechanism 4 and the turnover mechanism 5, and the backup controller 20 is connected to the backup frequency converter 21 to control the output of the backup frequency converter 21 to drive at least one of the traveling mechanism 3, the lifting mechanism 4 and the turnover mechanism 5.

[0060] In this embodiment, the backup frequency converter 21 can always be connected to the input power supply 6 and at least one of the traveling mechanism 3, the lifting mechanism 4 and the turnover mechanism 5, so that at least one of the traveling mechanism 3, the lifting mechanism 4 and the turnover mechanism 5 can be controlled by the second control device 2 after the first control device 1 fails. The backup frequency converter 21 can be connected to the input power supply 6 and at least one of the traveling mechanism 3, the lifting mechanism 4 and the turnover mechanism 5 after the first control device 1 fails.

[0061] Specifically, the backup frequency converter 21 is provided with an input terminal and an output terminal, wherein the input terminal is connected to the input power supply 6, and the output terminal is connected to at least one of the traveling motor 31, the lifting motor 41 and the turnover motor 51. Optionally, the output terminal and the input terminal are coaxial terminals, so that the backup frequency converter 21 of the second control device 2 can be quickly connected to the input power supply 6 and at least one of the traveling motor 31, the lifting motor 41 and the turnover motor 51 when the first control device 1 fails.

[0062] Optionally, the backup controller 20 is an operating handle 200, which can be connected to the backup frequency converter 21 by wireless means (such as Bluetooth, WIFI, Zigbee, etc.), or can be connected to the backup frequency converter 21 by wired means. When the first control device 1 fails, the operator can control the output of the backup frequency converter 21 through the keys on the operating handle 200.

[0063] In a specific embodiment, the second control device 2 comprises a backup tilting controller and a backup tilting frequency converter, the backup tilting frequency converter is connected to the input power source 6 and the tilting motor 51, and the backup tilting controller is connected to the backup tilting frequency converter to control the output of the backup tilting frequency converter to drive the tilting mechanism 5 to operate when the first control device 1 fails to control the tilting mechanism 5.

[0064] In a specific embodiment, the second control device 2 comprises a backup lifting controller and a backup lifting frequency converter, the backup lifting frequency converter is connected to the input power source 6 and the lifting motor 41, and the backup lifting controller is connected to the backup lifting frequency converter to control the output of the backup lifting frequency converter to drive the lifting mechanism 4 to operate when the first control device 1 fails to control the lifting mechanism 4.

[0065] In a specific embodiment, the second control device 2 comprises a backup traveling controller and a backup traveling frequency converter, the backup traveling frequency converter is connected to the input power source 6 and the traveling motor 31, and the backup traveling controller is connected to the backup traveling frequency converter to control the output of the backup traveling frequency converter to drive the traveling mechanism 3 to operate when the first control device 1 fails to control the traveling mechanism 3.

[0066] In a specific embodiment, the second control device 2 comprises a backup tilting controller and a backup tilting frequency converter, a backup lifting controller and a backup lifting frequency converter to control the tilting mechanism 5 and the lifting mechanism 4 to continue operating after the first control device 1 fails.

[0067] In a specific embodiment, the second control device 2 comprises a backup tilting controller and a backup tilting frequency converter, a backup traveling controller and a backup traveling frequency converter to control the tilting mechanism 5 and the traveling mechanism 3 to continue operating after the first control device 1 fails.

[0068] In a specific embodiment, the second control device 2 comprises a backup lifting controller and a backup lifting frequency converter, a backup traveling controller and a backup traveling frequency converter to control the lifting mechanism 4 and the traveling mechanism 3 to continue operating after the first control device 1 fails.

[0069] In a specific embodiment, the second control device 2 comprises a backup tilting controller and a backup tilting frequency converter, a backup lifting controller and a backup lifting frequency converter, a backup traveling controller and a backup traveling frequency converter to control the tilting mechanism 5, the lifting mechanism 4 and the traveling mechanism 3 to continue operating after the first control device 1 fails.

[0070] In an embodiment, the present application provides a production line comprising a plurality of the tilting spreaders described in any of the above embodiments, and the plurality of the tilting spreaders are arranged in part or all of the processes of the production line.

[0071] It is known that when at least one turnover spreader in the production line fails, the entire production line will be in an inoperable state due to the failure of the turnover spreader. The present application adds a second control device to the turnover spreader, so that when the first control device of the turnover spreader fails in communication or hardware, the second control device can control the continuous operation of the turnover spreader.

[0072] In the turnover spreader of the embodiments of the present application, when the first control device fails to control at least one of the walking mechanism, the lifting mechanism and the turnover mechanism, the second control device can continue to control the operation of at least one of the walking mechanism, the lifting mechanism and the turnover mechanism, effectively avoiding the situation that the entire production line cannot operate normally when a single turnover spreader cannot operate normally in the production line, ensuring the stability of the production line production progress, and the second control device is convenient to operate and simple in structure.

[0073] The preferred embodiments of the present application disclosed above are only used to help explain the present specification. The alternative embodiments do not describe all the details and limit the present application to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present specification, so that those skilled in the art can well understand and utilize the present specification. The present specification is limited by the claims and their entire scope and equivalents.

Claims

1. A roll-off spreader, characterized in that The utility model relates to a kind of overturning spreader, including: First control device, second control device, walking mechanism, lifting mechanism and turnover mechanism; Wherein, the walking mechanism is connected to the lifting mechanism and the turnover mechanism, configured as the lifting mechanism and the turnover mechanism can be driven along preset track movement; The lifting mechanism is configured as the turnover mechanism can be driven along the direction perpendicular to the preset track lifting, the turnover mechanism is configured as can grab object and overturn the object grabbed; The first control device is connected to the walking mechanism, the lifting mechanism and the turnover mechanism, to control the operation of the walking mechanism, the lifting mechanism and the turnover mechanism; When the first control device cannot control the operation of the walking mechanism, the lifting mechanism and / or the turnover mechanism, the second control device is connected to the walking mechanism, the lifting mechanism and / or the turnover mechanism, and controls the operation of the walking mechanism, the lifting mechanism and / or the turnover mechanism.

2. The roll-off spreader of claim 1, wherein, The turnover spreader further includes a switching mechanism, the first control device and the second control device are connected to the switching mechanism, and the switching mechanism connects the second control device to the walking mechanism, the lifting mechanism and / or the turnover mechanism when the first control device cannot control the operation of the walking mechanism, the lifting mechanism and / or the turnover mechanism, so as to control the operation of the walking mechanism, the lifting mechanism and / or the turnover mechanism by the second control device.

3. The roll-off spreader of claim 1, wherein, The second control device includes a backup controller and a backup frequency converter, the backup frequency converter is connected to an input power supply and the walking mechanism, the lifting mechanism and / or the turnover mechanism, and the backup controller is connected to the backup frequency converter to control the output of the backup frequency converter to drive the walking mechanism, the lifting mechanism and / or the turnover mechanism to operate.

4. The roll-off spreader of claim 3, wherein, The backup frequency converter is provided with an input terminal and an output terminal, so that the backup frequency converter is connected to the input power supply through the input terminal and connected to the walking mechanism, the lifting mechanism and / or the turnover mechanism through the output terminal when the first control device cannot control the operation of the walking mechanism, the lifting mechanism and / or the turnover mechanism.

5. The roll-off spreader of claim 3, wherein, The backup controller is an operating handle, which is connected to the backup frequency converter by wired or wireless mode.

6. The roll-off spreader of claim 3, wherein, The turnover mechanism includes a clamping part and a turnover motor, and the output end of the turnover motor is connected to the clamping part to drive the clamping part to overturn by the turnover motor. The second control device includes a backup turnover controller and a backup turnover frequency converter, and the backup turnover frequency converter is connected to the input power supply and the turnover motor when the first control device cannot control the turnover mechanism, and the backup turnover controller is connected to the backup turnover frequency converter to control the output of the backup turnover frequency converter to drive the turnover mechanism to operate.

7. The roll-off spreader according to claim 3 or 6, characterized in that The lifting mechanism comprises a lifting device connected to the turnover mechanism and a lifting motor connected to the lifting device to drive the lifting device to lift the turnover mechanism; The second control device comprises a backup lifting controller and a backup lifting frequency converter, when the first control device fails to control the lifting mechanism, the backup lifting frequency converter is connected to the input power source and the lifting motor, and the backup lifting controller is connected to the backup lifting frequency converter to control the output of the backup lifting frequency converter to drive the turnover mechanism to operate.

8. The roll-off spreader according to claim 3 or 6, characterized in that The walking mechanism comprises a walking wheel and a walking motor, the output end of the walking motor is connected to the walking wheel to drive the walking wheel to move along the preset guide rail; The second control device comprises a backup walking controller and a backup walking frequency converter, when the first control device fails to control the walking mechanism, the backup walking frequency converter is connected to the input power source and the walking motor, and the backup walking controller is connected to the backup walking frequency converter to control the output of the backup walking frequency converter to drive the walking mechanism to operate.

9. The roll-off spreader of claim 1, wherein, The first control device comprises a main controller, a walking frequency converter, a lifting frequency converter and a turnover frequency converter; The walking frequency converter, the lifting frequency converter and the turnover frequency converter are respectively connected to the walking mechanism, the lifting mechanism and the turnover mechanism, and the walking frequency converter, the lifting frequency converter and the turnover frequency converter are all connected to the input power source, the main controller is connected to the walking frequency converter, the lifting frequency converter and the turnover frequency converter to control the output of the walking frequency converter, the lifting frequency converter and the turnover frequency converter to drive the walking mechanism, the lifting mechanism and the turnover mechanism to operate.

10. The roll-off spreader of claim 9, wherein, The first control device further comprises a walking encoder, a lifting encoder and a turnover encoder; The walking encoder, the lifting encoder and the turnover encoder are all connected to the main controller, respectively used to acquire the walking distance signal of the walking mechanism, the lifting height signal of the lifting mechanism and the turnover angle signal of the turnover mechanism, and send to the main controller.

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