Synchronous lifting device and carrying equipment with same

Abstract

The utility model discloses a synchronous lifting device which comprises a base, a power source arranged on the base, multiple sets of lead screw nut mechanisms capable of being driven by the power source to act synchronously and multiple sets of lifting frames arranged corresponding to the multiple sets of lead screw nut mechanisms, and each lead screw nut mechanism comprises a lead screw and a nut driven by the lead screw to ascend and descend. The nut comprises a main body section with internal threads and a connecting flange formed on the main body section, the lifting frame comprises a main body plate and a connecting plate arranged on the main body plate, the synchronous lifting device further comprises a first elastic cushion, the first elastic cushion, the connecting plate and the connecting flange are fixedly connected, and the first elastic cushion is clamped between the connecting plate and the connecting flange. The utility model further comprises carrying equipment provided with the synchronous lifting device. According to the lifting frame, the horizontal height of the lifting frame can be adjusted through elastic deformation of the first elastic cushion, and therefore the heights of multiple sets of lifting frames can be kept the same. The requirements for the machining precision and the assembly precision of related parts in the synchronous lifting device can be lowered.

Description

Technical Field

[0001] The present application relates to the technical field of lifting equipment, and in particular to a synchronous lifting device and a handling device having the same. Background Art

[0002] Lifting equipment is often used to lift and transport material boxes in smart warehousing, or to lift and transport materials in production lines. Among them, a synchronous lifting device is a type of lifting equipment. A synchronous lifting device refers to a power source driving two sets of lifting frames to rise and fall synchronously, and the objects to be lifted are lifted by the two sets of lifting frames rising and falling synchronously. In order to prevent the objects to be lifted from tilting or even falling, the top surfaces of the two sets of lifting frames are required to be kept on the same horizontal plane, which requires the parts in the synchronous lifting device in the relevant technology to have very high processing accuracy and assembly accuracy, resulting in excessively high manufacturing costs for such synchronous lifting devices. Utility Model Content

[0003] The present application aims to solve one of the technical problems in the related art to a certain extent. To this end, the present application provides a synchronous lifting device and a handling equipment having the same.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a synchronous lifting device, including a base, a power source arranged on the base, a plurality of sets of screw-nut mechanisms that can be driven by the power source to move synchronously, and a plurality of lifting frames arranged corresponding to the plurality of sets of the screw-nut mechanisms, the screw-nut mechanism including a screw and a nut driven to rise and fall by the screw, the nut including a main body section with an internal thread and a connecting flange formed on the main body section, the lifting frame including a main body plate and a connecting plate arranged on the main body plate, the synchronous lifting device also including a first elastic pad, the first elastic pad, the connecting plate and the connecting flange are fixedly connected and the first elastic pad is clamped between the connecting plate and the connecting flange.

[0005] The application of the present invention has the following beneficial effects: by improving the structure of the lifting frame, connecting the connecting plate with the connecting flange on the nut, and sandwiching the first elastic pad between the two, the elastic deformation of the first elastic pad can be used to adjust the horizontal height of the lifting frame, thereby achieving the purpose of keeping multiple sets of lifting frames at the same height. The requirements for the processing accuracy and assembly accuracy of the relevant parts in the synchronous lifting device can be reduced, thereby reducing the manufacturing cost of the synchronous lifting device.

[0006] Optionally, the connecting plate is provided with an avoidance gap for the main body section to pass through.

[0007] Optionally, the cross-sections of the first elastic pad and the connecting plate are larger than the cross-section of the connecting flange, a rigid pad is further provided between the connecting flange and the first elastic pad, and the shapes and sizes of the rigid pad, the first elastic pad and the connecting plate are matched.

[0008] Optionally, the connecting plate, the connecting flange and the first elastic pad are fixed together by bolts.

[0009] Optionally, the lifting frame further includes a supporting plate fixed on the main body plate, and the synchronous lifting device further includes a lifting top plate, and the lifting top plate is respectively fixedly connected to the supporting plates on multiple sets of lifting frames.

[0010] Optionally, a second elastic pad is sandwiched between the lifting top plate and the supporting plate. The elastic deformation capacity of the second elastic pad can be used to adjust the horizontal height of the lifting top plate, thereby reducing the requirements for the processing accuracy and assembly accuracy of related parts in the synchronous lifting device and reducing the manufacturing cost of the synchronous lifting device.

[0011] Optionally, the main plate, the connecting plate and the supporting plate form an integrated structure.

[0012] Optionally, a fixing plate is fixedly provided on the base, and the lifting frame can be lifted and moved relative to the fixing plate under the drive of the screw nut mechanism, and a limiting mechanism for limiting the relative shaking of the two is provided between the lifting frame and the fixing plate. When the lifting frame is driven by the screw nut mechanism to perform lifting and lowering movements, the above-mentioned limiting mechanism can improve the stability of the lifting frame and prevent the lifted object from slipping due to the shaking of the lifting frame. In addition, after adopting the above-mentioned limiting structure, the screw nut mechanism only needs to provide power in the vertical direction, and the radial force along the screw is borne by the guide rail and the slider, which can protect the screw nut mechanism to the greatest extent and extend the service life of the screw nut mechanism.

[0013] Optionally, the limiting mechanism includes a guide rail and a slider matched with the guide rail, one of the guide rail and the slider is fixedly arranged on the fixing plate, and the other is fixedly arranged on the lifting frame.

[0014] Optionally, the screw nut mechanism and the lifting frame are each provided with two sets, and the synchronous lifting device further comprises:

[0015] A one-input and two-output reducer, the input end of which is connected to the output end of the power source;

[0016] Two sets of couplings, each set of the couplings is connected to one output end of the one-input and two-output reducer;

[0017] two sets of commutators, each set of the commutators being connected to the couplings; and,

[0018] Two sets of gear transmission assemblies, each set of the gear transmission assemblies comprises a driving gear fixedly sleeved outside the commutator and a passive gear meshing with the driving gear for transmission;

[0019] Wherein, the passive gear is fixedly sleeved outside the screw rod.

[0020] In addition, the present application also provides a handling device, including a frame, the handling device also includes a synchronous lifting device as described in any one of the above technical solutions, and the synchronous lifting device is installed on the frame through a base. The handling device has the same beneficial effects as the aforementioned synchronous lifting device, which will not be repeated here.

[0021] These features and advantages of the present application will be disclosed in detail in the following specific embodiments and drawings. The best embodiments or means of the present application will be described in detail in conjunction with the drawings, but they are not intended to limit the technical solutions of the present application. In addition, there are multiple features, elements, and components that appear in each of the following texts and drawings, and different symbols or numbers are marked for convenience, but they all represent components with the same or similar structures or functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present application is further described below in conjunction with the accompanying drawings:

[0023] Figure 1 A schematic structural diagram of a synchronous lifting device provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of the connection between the screw-nut mechanism, the lifting frame and the first elastic pad in the synchronous lifting device provided in the embodiment;

[0025] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0026] Figure 4 An exploded view of a lifting frame, a lifting top plate, and a second elastic pad in a synchronous lifting device provided in an embodiment;

[0027] Figure 5 An exploded view of a fixed plate, a lifting frame and a limiting mechanism in a synchronous lifting device provided in an embodiment;

[0028] Figure 6 A schematic diagram of a power structure in a synchronous lifting device provided in an embodiment.

[0029] Among them, 1. base, 10. fixed plate, 100. slider, 2. power source, 20. one-input and two-output reducer, 21. coupling, 22. commutator, 23. driving gear, 24. passive gear, 3. screw-nut mechanism, 30. screw, 31. nut, 310. main section, 311. connecting flange, 4. lifting frame, 40. main plate, 41. connecting plate, 42. support plate, 43. guide rail, 5. first elastic pad, 6. rigid pad, 7. lifting top plate, 8. second elastic pad. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments based on the embodiments are intended to be used to explain the present application and cannot be understood as limiting the present application.

[0031] References to "one embodiment" or "an example" or "an example" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment disclosed in the present application. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0032] Embodiment: This embodiment provides a synchronous lifting device, such as Figure 1 , Figure 2 and Figure 3 As described in the above, the synchronous lifting device comprises a base 1, a power source 2 arranged on the base 1, a plurality of screw nut mechanisms 3 that can be driven by the power source 2 to move synchronously, and a plurality of lifting frames 4 arranged corresponding to the plurality of screw nut mechanisms 3. The screw nut mechanism 3 comprises a screw 30 and a nut 31 driven by the screw 30 to rise and fall, and the lifting frame 4 is fixedly connected to the nut 31, so that when the power source 2 drives the screw 30 to rotate in positive and negative directions, the screw 30 will drive the lifting frame 4 to rise and fall through the nut 31. Specifically, the nut 31 comprises a main body section 310 with internal threads and a connecting flange 311 formed on the main body section 310, the lifting frame 4 comprises a main body plate 40 and a connecting plate 41 arranged on the main body plate 40, and the synchronous lifting device further comprises a first elastic pad 5, the first elastic pad 5, the connecting plate 41 and the connecting flange 311 are fixedly connected, and the first elastic pad 5 is sandwiched between the connecting plate 41 and the connecting flange 311.

[0033] The synchronous lifting device provided in this embodiment improves the structure of the lifting frame 4, connects the connecting plate 41 with the connecting flange 311 on the nut 31, and sandwiches the first elastic pad 5 between the two. The elastic deformation of the first elastic pad 5 can be used to adjust the horizontal height of the lifting frame 4, thereby achieving the purpose of keeping the heights of the two sets of lifting frames 4 the same. The requirements for the processing accuracy and assembly accuracy of the relevant parts in the synchronous lifting device can be reduced, thereby reducing the manufacturing cost of the synchronous lifting device.

[0034] The first elastic pad 5 in this embodiment is made of polyurethane. In other optional implementations, the first elastic pad 5 may also be made of materials such as silicone or rubber.

[0035] It should also be noted that in the present embodiment, two sets of the screw-nut mechanism 3 and the lifting frame 4 are provided. In other optional implementations, a larger number of screw-nut mechanisms and lifting frames may be provided as required.

[0036] The connecting plate 41 in this embodiment is an integral plate, and an avoidance gap is provided on the connecting plate 41 for the main body section 310 to pass through. By such a configuration, the lower surface of the connecting plate 41 can be fitted and fixed with the connecting flange 311 through the first elastic pad 5, and the connecting plate 41 can be free from the main body section 310 in the avoidance gap, which can limit the slight movement of the connecting plate 41 in the radial direction of the main body section 310, thereby ensuring the stability of lifting. Further, in this embodiment, the size of the first elastic pad 5 and the connecting plate 41 is also designed, and a rigid pad 6 is added. Specifically, the cross-section of the first elastic pad 5 and the connecting plate 41 in this embodiment is larger than the cross-section of the connecting flange 311, and a rigid pad 6 is also provided between the connecting flange 311 and the first elastic pad 5, and the shapes and sizes of the rigid pad 6, the first elastic pad 5 and the connecting plate 41 are adapted. In this way, the overall size of the first elastic pad 5 can be increased, and its role of adaptive height difference through elastic deformation can be better exerted.

[0037] In this embodiment, the connecting plate 41, the connecting flange 311 and the first elastic pad 5 are fixed together by bolts. On the one hand, the fixed connection can be achieved by the bolts, and on the other hand, the clamping degree of the first elastic pad 5 can be adjusted by the bolts, thereby facilitating the adjustment of the two sets of lifting frames 4 to the same height.

[0038] In addition, the synchronous lifting device provided in this embodiment is also improved in another aspect. Figure 4As shown in , the synchronous lifting device also includes a support plate 42 fixed on the main plate 40, and the synchronous lifting device also includes a lifting top plate 7, which is fixedly connected to the support plates 42 on the two sets of lifting frames 4. Through the above design, the two sets of lifting frames 4 are directly fixedly connected together through a lifting top plate 7. On the one hand, the lifting top plate 7 can be used to conveniently judge whether the top surface used to lift the object to be lifted is horizontal (that is, to judge whether the two sets of lifting frames 4 are at the same height). On the other hand, the lifting top plate 7 can increase the contact area with the object to be lifted, thereby improving the stability of the lifting process. Further, in this embodiment, a second elastic pad 8 is sandwiched between the lifting top plate 7 and the support plate 42. The second elastic pad 8 has the same function as the first elastic pad 5. The elastic deformation ability of the second elastic pad 8 is used to adjust the horizontal height of the lifting top plate 7, thereby reducing the requirements for the processing accuracy and assembly accuracy of the relevant parts in the synchronous lifting device, and reducing the manufacturing cost of the synchronous lifting device.

[0039] The main body plate 40 , the connecting plate 41 and the supporting plate 42 in this embodiment are formed into an integrated structure, and specifically, can be directly formed by mold manufacturing or by welding.

[0040] In order to improve the stability of the lifting process, such as Figure 5 As shown in , in this embodiment, a fixed plate 10 is also fixedly arranged on the base 1, and the lifting frame 4 can be lifted and moved relative to the fixed plate 10 under the drive of the screw nut 31 mechanism, and a limiting mechanism for limiting the relative shaking of the two is arranged between the lifting frame 4 and the fixed plate 10. Specifically, the limiting mechanism in this embodiment includes a guide rail 43 and a slider 100 adapted to the guide rail 43, wherein the guide rail 43 is arranged on the lifting frame 4, and the slider 100 is arranged on the fixed plate 10. In this embodiment, the guide rail 43 and the slider 100 are fixedly installed on the lifting frame 4 and the fixed plate 10 respectively by bolts. In an optional embodiment, the guide rail 43 can also be arranged on the fixed plate 10, and the slider 100 can be arranged on the lifting frame 4 accordingly. When the lifting frame 4 is driven by the screw nut mechanism 3 to perform lifting and lowering movements, the above-mentioned limiting mechanism can improve the stability of the lifting frame 4, and avoid the lifting object from sliding due to the shaking of the lifting frame 4. In addition, after adopting the above-mentioned limiting structure, the screw nut 31 mechanism only needs to provide vertical power, and the radial force along the screw 30 is borne by the guide rail 43 and the slider 100, which can protect the screw nut 31 mechanism to the greatest extent and extend the service life of the screw nut 31 mechanism.

[0041] Combination Figure 1 and Figure 6As shown in , in order to ensure that the two sets of nuts 31 and screw rods 30 can act synchronously to achieve synchronous driving of the two sets of lifting frames 4, the power structure adopted by the synchronous lifting device provided in this embodiment is described as follows: the synchronous lifting device also includes a one-in-two-out reducer 20, two sets of couplings 21, two sets of commutators 22 and two sets of gear transmission assemblies. Among them, the input end of the one-in-two-out reducer 20 is connected to the output end of the power source 2, each set of couplings 21 is correspondingly connected to an output end of the one-in-two-out reducer 20, each set of commutators 22 is correspondingly connected to the couplings 21, and each set of gear transmission assemblies includes a driving gear 23 fixedly sleeved outside the commutator 22 and a passive gear 24 meshing with the driving gear 23, and the passive gear 24 is fixedly sleeved outside the screw rod 30.

[0042] The power source 2 in this embodiment adopts a driving motor, specifically, a servo motor is used as the power source 2. When the synchronous lifting device is working, the power is output by the above-mentioned servo motor, and the synchronous transmission of torque and the torque increase are realized through the one-input and two-output reducer 20. The coupling 21 is connected to the two output ends of the one-input and two-output reducer 20. The coupling 21 on one side is directly connected to a driving gear 23 through a commutator 22, and the torque is transmitted to one driving gear 23, while the coupling 21 on the other side is connected to the driving gear 23 through a transmission shaft and a commutator 22, and the torque is transmitted to another driving gear 23. In the above process, the torque direction is changed by the commutator 22, and the gear transmission assembly provides the power of rotational motion for the screw 30. The screw nut 31 mechanism converts the rotational motion of the screw 30 into the lifting motion of the nut 31, thereby realizing the synchronous drive of the two sets of lifting frames 4.

[0043] The synchronous lifting device provided in this embodiment can be applied to handling equipment. Specifically, the handling equipment (not shown in the figure) includes a frame and the synchronous lifting device provided in this embodiment, and the synchronous lifting device can be installed on the frame through a base. Preferably, the handling equipment can be designed to be movable, and correspondingly, movable wheels can be provided on the aforementioned frame. Furthermore, the handling equipment can also be designed to be automatically guided. For example, the handling equipment can be an automatically guided transport vehicle commonly used in smart warehousing.

[0044] The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Those skilled in the art should understand that the present application includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present application will be included in the scope of the claims.

Claims

1. A synchronous lifting device, comprising a base (1), a power source (2) arranged on the base (1), a plurality of sets of screw-nut mechanisms (3) that can be driven by the power source (2) to move synchronously, and a plurality of lifting frames (4) arranged corresponding to the plurality of sets of the screw-nut mechanisms (3), wherein the screw-nut mechanisms (3) include a screw (30) and a nut (31) that is driven by the screw (30) to move up and down, and characterized in that: The nut (31) includes a main body section (310) having an internal thread and a connecting flange (311) formed on the main body section (310); the lifting frame (4) includes a main body plate (40) and a connecting plate (41) arranged on the main body plate (40); the synchronous lifting device also includes a first elastic pad (5); the first elastic pad (5), the connecting plate (41) and the connecting flange (311) are fixedly connected, and the first elastic pad (5) is clamped between the connecting plate (41) and the connecting flange (311).

2. The synchronous lifting device according to claim 1, characterized in that: The connecting plate (41) is provided with an escape notch for the main body section (310) to pass through.

3. The synchronous lifting device according to claim 1, characterized in that: The cross-sections of the first elastic pad (5) and the connecting plate (41) are larger than the cross-section of the connecting flange (311); a rigid pad (6) is also provided between the connecting flange (311) and the first elastic pad (5); and the shapes and sizes of the rigid pad (6), the first elastic pad (5) and the connecting plate (41) are compatible.

4. The synchronous lifting device according to any one of claims 1 to 3, characterized in that: The connecting plate (41), the connecting flange (311) and the first elastic pad (5) are fixedly connected together by bolts.

5. The synchronous lifting device according to claim 1, characterized in that: The lifting frame (4) also includes a supporting plate (42) fixed on the main body plate (40), and the synchronous lifting device also includes a lifting top plate (7), and the lifting top plate (7) is respectively fixedly connected to the supporting plates (42) on multiple sets of lifting frames (4).

6. The synchronous lifting device according to claim 5, characterized in that: A second elastic pad (8) is also sandwiched between the lifting top plate (7) and the supporting plate (42).

7. The synchronous lifting device according to claim 5, characterized in that: The main body plate (40), the connecting plate (41) and the supporting plate (42) form an integrated structure.

8. The synchronous lifting device according to claim 1, characterized in that: A fixing plate (10) is fixedly arranged on the base (1); the lifting frame (4) can be lifted and moved relative to the fixing plate (10) under the drive of a screw nut (31) mechanism; and a limiting mechanism is arranged between the lifting frame (4) and the fixing plate (10) for limiting relative shaking between the two.

9. The synchronous lifting device according to claim 8, characterized in that: The limiting mechanism comprises a guide rail (43) and a slider (100) adapted to the guide rail (43); one of the guide rail (43) and the slider (100) is fixedly arranged on a fixing plate (10), and the other is fixedly arranged on a lifting frame (4).

10. The synchronous lifting device according to claim 1, characterized in that: The screw nut mechanism (3) and the lifting frame (4) are each provided with two sets, and the synchronous lifting device further comprises: A one-input and two-output reducer (20), the input end of which is connected to the output end of the power source (2); Two sets of couplings (21), each set of the couplings (21) is connected to one output end of the one-input and two-output reducer (20); two sets of commutators (22), each set of the commutators (22) being connected to the coupling (21) respectively; and, Two sets of gear transmission assemblies, each set of the gear transmission assemblies comprises a driving gear (23) fixedly sleeved outside the commutator (22) and a driven gear (24) meshing with the driving gear (23); Wherein, the passive gear (24) is fixedly sleeved outside the screw rod (30).

11. A handling device, comprising a frame, characterized in that: The handling equipment further comprises a synchronous lifting device as claimed in any one of claims 1 to 10, wherein the synchronous lifting device is mounted on the frame via a base.

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