Adjustable lifting appliance

Abstract

The utility model belongs to the technical field of lifting appliances, and discloses an adjustable lifting appliance which is characterized in that two lifting appliance bodies of the adjustable lifting appliance are distributed at intervals along a first directional direction; the first rotary driving part is fixedly arranged on the lifting arm of one lifting appliance body, an output shaft of the first rotary driving part rotatably penetrates through the lifting arm of one lifting appliance body and is in transmission connection with the lifting arm of the other lifting appliance body, and the output shaft of the first rotary driving part can drive the lifting arm in transmission connection with the output shaft to rotate around a fixed axis; the first orientation is parallel to the fixed axis; the two translation driving assemblies of each lifting appliance body are symmetrically distributed on the two sides of the fixed axis, and the two lifting blocks of each lifting appliance body are arranged at the output ends of the two translation driving assemblies in a one-to-one correspondence mode. And each translation driving assembly can drive the corresponding hoisting block to translate along a second orientation, so that the two hoisting blocks of each sling body can be close to or far away from each other along the second orientation, and the first orientation is perpendicular to the second orientation. The adjustable lifting appliance is good in universality and high in adjusting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to adjustable lifting equipment. Background Technology

[0002] During the vehicle assembly and machining processes, it is necessary to hoist the assembly parts and processed items.

[0003] Currently, one type of lifting device in the prior art, designed to lift items of different sizes, especially rectangular items of varying dimensions, features two relatively fixed discs. These discs are axially spaced, and each disc has two detachably connected cantilever arms. By adjusting the circumferential position of each cantilever along the disc and the radial insertion depth of each cantilever, the four cantilever arms can be adjusted to accommodate items of different sizes. However, this lifting device lacks stepless adjustment, its versatility needs improvement, and its adjustment efficiency for different item sizes is low. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable lifting device to solve the problems of poor versatility and low adjustment efficiency of existing lifting devices.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An adjustable lifting device includes a first rotary drive and two lifting device bodies, the two lifting device bodies being distributed at a distance along a first orientation; the first rotary drive is fixedly mounted on the boom of one of the lifting device bodies, the output shaft of the first rotary drive rotatably passes through the boom of one of the lifting device bodies and is drive-connected to the boom of the other lifting device body, the output shaft of the first rotary drive can drive the boom connected to it to rotate around a fixed axis, the first orientation being parallel to the fixed axis;

[0007] Each of the lifting devices further includes two translation drive components and two lifting blocks. The two translation drive components of each lifting device are symmetrically distributed on both sides of the fixed axis, and the two lifting blocks of each lifting device are correspondingly arranged at the output ends of the two translation drive components. Each translation drive component can drive the corresponding lifting block to translate along a second orientation, so that the two lifting blocks of each lifting device can move closer or further apart along the second orientation. The lifting blocks are used to lift items, and the first orientation and the second orientation are perpendicular.

[0008] As a preferred embodiment of the aforementioned adjustable lifting device, along the first orientation, a first hook is connected to the bottom of each lifting block, and a second hook is connected to the top of the cantilever of at least one of the lifting device bodies.

[0009] As a preferred embodiment of the aforementioned adjustable lifting device, along the first orientation, the bottom of the lifting block of one of the lifting devices located above is detachably connected to or hinged with the first hook.

[0010] And / or, along the first orientation, the top of the cantilever of one of the lower lifting bodies is detachably connected to or hinged to the second hook.

[0011] As a preferred embodiment of the above-mentioned adjustable lifting device, the output shaft of the first rotary drive is provided with a rotation angle sensor, or the boom that is drivenly connected to the output shaft of the first rotary drive is provided with a rotation angle sensor.

[0012] And / or, each of the lifting blocks is equipped with a displacement sensor.

[0013] As a preferred embodiment of the aforementioned adjustable lifting device, the boom is provided with a sliding groove that extends along the second orientation to both ends of the boom;

[0014] Each of the lifting devices also includes two protective covers. The two protective covers and two translation drive components of each lifting device are arranged in a one-to-one correspondence. The protective covers are used to slide along the second orientation into the groove and cover the outer periphery of the translation drive components.

[0015] As a preferred embodiment of the aforementioned adjustable lifting device, each of the two covers of the lifting device body is provided with a relief groove extending along the second orientation on the side facing towards each other. When the cover is placed on the outer periphery of the translation drive assembly, the first hook passes through the relief groove along the first orientation, and at least the hooking part of the first hook is located outside the cover.

[0016] As a preferred embodiment of the aforementioned adjustable lifting device, each lifting device body further includes two plugs, and the two plugs of each lifting device body are correspondingly provided with the two ends of the slide groove; the plugs can be inserted into the slide groove along the second orientation, and the protective cover can abut against the plugs along the second orientation.

[0017] As a preferred embodiment of the aforementioned adjustable lifting device, the translation drive assembly includes a second rotary drive component and a lead screw. The second rotary drive component is fixedly mounted on the boom, and the output shaft of the second rotary drive component is connected to the lead screw and can drive the lead screw to rotate around its own central axis. The lifting block is slidably connected to the boom along the second orientation and threadedly connected to the lead screw.

[0018] As a preferred embodiment of the aforementioned adjustable lifting device, each of the lifting device bodies has a boom equipped with a battery box, which is used to provide power to the first rotary drive component and the translational drive component.

[0019] As a preferred embodiment of the aforementioned adjustable lifting device, the boom of the lifting device body is equipped with a controller, which is used to control the operation of the first rotary drive component and the translational drive component.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides an adjustable lifting device. When lifting items, the adjustable lifting device controls the first rotary drive component to drive the boom connected to it to rotate around a fixed axis according to the size and specifications of the items until the included angle between the two lifting device bodies is adjusted to the expected angle. According to the size of the items, the two translation drive components of each lifting device body are controlled to drive their respective corresponding lifting blocks to move along the second orientation until the distance between the two lifting blocks of each lifting device body is the expected distance. Then the items are lifted onto the lifting blocks of the two lifting device bodies.

[0022] The first rotary drive component can infinitely adjust the included angle between the two lifting device bodies, and the two translation drive components of each lifting device body can infinitely adjust the distance between the corresponding two lifting blocks, thereby effectively improving the versatility of the adjustable lifting device compared to the prior art.

[0023] Secondly, the first rotary drive component and the translation drive component are independent of each other. While adjusting the included angle between the two lifting bodies through the first rotary drive component, the two translation drive components of each lifting body can be controlled simultaneously to drive their respective lifting blocks to translate along the second orientation, so that the distance between the two lifting blocks of each lifting body can be adjusted synchronously. Therefore, compared with the prior art, the adjustment efficiency of the adjustable lifting device can be effectively improved when it is suitable for items of different sizes.

[0024] Therefore, this adjustable lifting device has good versatility and high adjustment efficiency. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the adjustable lifting device in the storage state according to a specific embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the adjustable lifting device in working state according to a specific embodiment of the present invention. Figure 1 ;

[0027] Figure 3 This is a schematic diagram of the adjustable lifting device in working state according to a specific embodiment of the present invention. Figure 2 ;

[0028] Figure 4 This is a partial structural diagram of the adjustable lifting device provided in a specific embodiment of this utility model. Figure 1 ;

[0029] Figure 5 This is a schematic diagram of the structure of an article provided in a specific embodiment of this utility model;

[0030] Figure 6 This is a partial structural diagram of the adjustable lifting device provided in a specific embodiment of this utility model. Figure 2 ;

[0031] Figure 7 This is a sectional view of the lifting device body provided in a specific embodiment of this utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the protective cover provided in a specific embodiment of this utility model;

[0033] Figure 9 This is a cross-sectional view of the boom provided in a specific embodiment of this utility model.

[0034] In the picture:

[0035] 100. Items;

[0036] 1. First rotary drive component;

[0037] 2. Spreader body;

[0038] 21. Crane boom; 211. Second hook; 212. Slide groove; 2121. Sub-slide groove;

[0039] 22. Translation drive assembly; 221. Second rotary drive component; 222. Lead screw;

[0040] 23. Lifting block; 231. First lifting hook;

[0041] 24. Protective cover; 241. Protective cover body; 2411. Clearance groove; 242. Connecting part;

[0042] 25. Plug;

[0043] 26. Battery box;

[0044] 3. Rotation angle sensor;

[0045] 4. Controller. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0047] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0050] This utility model provides an adjustable lifting device, such as Figure 1-4 As shown, the adjustable lifting device includes a first rotary drive 1 and two lifting device bodies 2, which are distributed at intervals along a first orientation. The first rotary drive 1 is fixedly mounted on the boom 21 of one of the lifting device bodies 2. The output shaft of the first rotary drive 1 is rotatably passed through the boom 21 of one of the lifting device bodies 2 and is connected to the boom 21 of the other lifting device body 2. The output shaft of the first rotary drive 1 can drive the boom 21 connected to it to rotate around a fixed axis. The first orientation is parallel to the fixed axis. Each lifting device body 2 also includes two translation drive components 22 and two lifting blocks 23. The two translation drive components 22 of each lifting device body 2 are symmetrically distributed on both sides of the fixed axis, and the two lifting blocks 23 of each lifting device body 2 are correspondingly arranged at the output ends of the two translation drive components 22. Each translation drive component 22 can drive the corresponding lifting block 23 to translate along the second orientation, so that the two lifting blocks 23 of each lifting device body 2 can move closer or further away from each other along the second orientation. The lifting blocks 23 are used to lift the item 100. The first orientation and the second orientation are perpendicular.

[0051] When hoisting item 100, the first rotary drive component 1 is controlled to drive the boom 21 connected to it to rotate around a fixed axis according to the size and specifications of item 100 until the included angle between the two lifting bodies 2 is adjusted to the expected included angle. According to the size of item 100, the two translation drive components 22 of each lifting body 2 are controlled to drive their respective corresponding lifting blocks 23 to move along the second orientation until the distance between the two lifting blocks 23 of each lifting body 2 is the expected distance. Then, item 100 is hoisted onto the lifting blocks 23 of the two lifting bodies 2.

[0052] The first rotary drive component 1 can infinitely adjust the included angle between the two lifting bodies 2, and the two translation drive components 22 of each lifting body 2 can infinitely adjust the distance between the corresponding two lifting blocks 23, so that the versatility of the adjustable lifting device can be effectively improved compared with the prior art.

[0053] Secondly, the first rotary drive component 1 and the translation drive component 22 are independent of each other. While adjusting the included angle between the two lifting bodies 2 by the first rotary drive component 1, the two translation drive components 22 of each lifting body 2 can be synchronously controlled to drive their respective lifting blocks 23 to translate along the second orientation, so that the distance between the two lifting blocks 23 of each lifting body 2 can be synchronously adjusted. Therefore, compared with the prior art, the adjustment efficiency of the adjustable lifting device can be effectively improved when it is suitable for items 100 of different sizes.

[0054] Therefore, this adjustable lifting device has good versatility and high adjustment efficiency.

[0055] For ease of explanation, the two lifting device bodies 2 are defined as the first lifting device body and the second lifting device body, respectively. An example is given where the first lifting device body is positioned above the second lifting device body along a first orientation, and the first orientation is the height direction of the two lifting device bodies 2.

[0056] In this embodiment, as Figure 1-3 As shown, in an exemplary configuration, a first rotary drive 1 is fixedly mounted on the boom 21 of the first lifting device body. The output shaft of the first rotary drive 1 is rotatably inserted through the boom 21 of the first lifting device body and is drively connected to the boom 21 of the second lifting device body. The output shaft of the first rotary drive 1 can drive the boom 21 of the second lifting device body to rotate around a fixed axis. In other embodiments, the first rotary drive 1 can also be fixedly mounted on the boom 21 of the second lifting device body, with the output shaft of the first rotary drive 1 rotatably inserted through the boom 21 of the second lifting device body and drively connected to the boom 21 of the first lifting device body. The output shaft of the first rotary drive 1 can drive the boom 21 of the first lifting device body to rotate around a fixed axis.

[0057] Specifically, the output shaft of the first rotary drive 1 is rotatably mounted on the boom 21 of the first lifting device body via a bearing or clearance fit.

[0058] Specifically, the first rotary drive component 1 is a motor. The motor housing is fixed to the boom 21 of the first lifting device body by means of screw connection, welding, or bolt and nut connection.

[0059] In this embodiment, as Figure 1-4 and Figure 9 As shown, taking the cuboid shape of the boom 21 of the lifting device body 2 as an example, the first orientation is parallel to the height direction of the lifting device body 2, the second orientation is parallel to the length direction of the lifting device body 2, and the third orientation is parallel to the width direction of the lifting device body 2. It can be understood that the shape of the boom 21 can also be adaptively adjusted according to the actual working conditions.

[0060] Specifically, Figure 1 and Figure 4 The ab direction in the diagram is the first orientation. Figure 4 The cd direction in the diagram is the second orientation. Figure 5 The ef direction in the equation is the third orientation.

[0061] Preferably, in this embodiment, the output shaft of the first rotary drive component 1 is fixedly connected to the boom 21 of the second lifting device body, and the central axis of the output shaft of the first rotary drive component 1 is collinear with the fixed axis. This arrangement enables a transmission connection between the output shaft of the first rotary drive component 1 and the boom 21 of the second lifting device body, and effectively simplifies the structure. Specifically, the output shaft of the first rotary drive component 1 is fixedly connected to the cantilever of the second lifting device body by means of bolts and nuts, or welding.

[0062] As an alternative, the output shaft of the first rotary drive 1 is keyed to the boom 21 of the second lifting device body and passes through the boom 21 of the second lifting device body along a first orientation; a locking nut is threaded to the output shaft of the first rotary drive 1, and the boom 21 of the second lifting device body is supported on the locking nut along the first orientation. This also achieves a transmission connection between the output shaft of the first rotary drive 1 and the boom 21 of the second lifting device body.

[0063] Among them, such as Figure 2-4 As shown, along the first orientation, each lifting block 23 is connected to a first hook 231 at its bottom. This enables the lifting block 23 to lift the item 100. In this embodiment, each lifting block 23 is exemplaryly configured to have a first hook 231 connected to its bottom.

[0064] Optionally, along the first orientation, the bottom of the lifting block 23 of the upper lifting device body 2 is detachably connected or hinged to a first hook 231. That is, along the first orientation, the bottom of the lifting block 23 of the upper lifting device body 2 is connected to the first hook 231 by a detachable connection or hinge. This configuration can effectively reduce the volume and space occupancy of the adjustable lifting device when it is in the stored state.

[0065] In this embodiment, when the bottom of the lifting block 23 of the upper lifting device body 2 is detachably connected to the first hook 231, each of the first hooks 231 of the first lifting device body is detached from the corresponding lifting block 23 during storage. This effectively reduces the distance between the two lifting device bodies 2 along the first orientation during design and production. After detaching each of the first hooks 231 of the first lifting device body from the corresponding lifting block 23, the second lifting device body is rotated around a fixed axis by the first rotary drive 1 until the second lifting device body is directly below the first lifting device body. This effectively reduces the volume and space occupancy of the adjustable lifting device when it is stored. Specifically, each of the first hooks 231 of the first lifting device body is detachably connected to the corresponding lifting block 23 by screws or by a combination of bolts and nuts.

[0066] For the bottom of the lifting block 23 of the upper lifting body 2, which is hinged to the first hook 231, the distance between the two lifting bodies 2 along the first orientation can be effectively reduced during design and production. Specifically, when the adjustable lifting device is stored, the first rotary drive 1 drives the second lifting body to rotate around a fixed axis. The first hook 231 on the first lifting body can rotate under the force of the second lifting body, allowing the second lifting body to effectively rotate around the fixed axis to be directly below the first lifting body without interference from the first hook 231 on the first lifting body. This also effectively reduces the volume and space occupancy of the adjustable lifting device when it is stored.

[0067] In this embodiment, the bottom of the lifting block 23 of the first lifting device body is detachably connected to the first hook 231.

[0068] In this embodiment, the stowed state refers to the state where the second lifting body of the adjustable lifting device is located directly below the first lifting body. When the two lifting bodies 2 of the adjustable lifting device are distributed at an angle, the adjustable lifting device is in the working state.

[0069] As an alternative, along the first orientation, the bottom of the lifting block 23 of the upper lifting body 2 is connected to the first hook 231 by a fixed connection method such as welding.

[0070] Specifically, along the first orientation, the bottom of the lifting block 23 of the lower lifting body 2 is connected to the first hook 231 by means of detachable connection, hinge or welding.

[0071] Among them, such as Figure 1-4 As shown, along the first orientation, at least one cantilever of the lifting device body 2 is connected to a second hook 211 at its top. This allows the adjustable lifting device to be moved to a different position as a whole.

[0072] like Figure 1-4 As shown, preferably along the first orientation, a second hook 211 is connected to the top of the cantilever of each lifting device body 2. This improves the reliability, stability, and safety of the adjustable lifting device when it is moved as a whole. In this embodiment, as... Figure 1-4 As shown, in an exemplary configuration, each lifting device body 2 has two second hooks 211 connected to the top of its cantilever.

[0073] Optionally, along the first orientation, a second hook 211 is detachably or hinged to the top of the cantilever of the lower lifting device body 2. That is, along the first orientation, a second hook 211 is detachably or hinged to the top of the cantilever of the lower lifting device body 2. This configuration can further reduce the volume and space occupancy of the adjustable lifting device when it is in the stored state.

[0074] In this embodiment, when the top of the cantilever of the lower lifting device body 2 is detachably connected to the second hook 211, each of the second hooks 211 of the second lifting device body is detached from the corresponding lifting arm 21 during storage. This allows for a further reduction in the distance between the two lifting device bodies 2 along the first orientation during design and production. After detaching each of the second hooks 211 of the second lifting device body from the corresponding lifting arm 21, the second lifting device body is rotated around a fixed axis by the first rotary drive component 1 until the second lifting device body is directly below the first lifting device body. This further reduces the volume and space occupancy of the adjustable lifting device in its stored state. Specifically, each of the second hooks 211 of the second lifting device body is detachably connected to the corresponding lifting arm 21 by screws or a combination of bolts and nuts.

[0075] The hinged connection between the top of the cantilever of the second lifting device body and the second hook 211 allows for a further reduction in the distance between the two lifting device bodies 2 along the first orientation during design and manufacturing. Specifically, when the adjustable lifting device is stowed, the first rotary drive 1 drives the second lifting device body to rotate around a fixed axis. The second hook 211 on the second lifting device body can rotate under the reaction force of the first lifting device body, allowing the second lifting device body to effectively rotate around the fixed axis to a position directly below the first lifting device body without interference from the first hook 231 on the first lifting device body and the second hook 211 on the second lifting device body. This further reduces the volume and space occupancy of the adjustable lifting device when it is stowed.

[0076] In this embodiment, the top of the cantilever of the second lifting device body is detachably connected to the second hook 211.

[0077] In this embodiment, when storing the adjustable lifting device, firstly, each first hook 231 of the first lifting device body is detached from its corresponding lifting block 23, and each second hook 211 of the second lifting device body is detached from its corresponding boom 21; then, the first rotary drive 1 drives the second lifting device body to rotate around a fixed axis until the second lifting device body is directly below the first lifting device body. This minimizes the volume and space occupancy of the adjustable lifting device when it is stored.

[0078] As an alternative, along the first orientation, the top of the cantilever of the lower lifting body 2 is connected to a second hook 211 by a fixed connection such as welding.

[0079] Specifically, along the first orientation, the top of the cantilever of the upper lifting body 2 is connected to a second hook 211 by means of detachable connection, hinge or welding.

[0080] Optionally, such as Figure 1-4 As shown, the output shaft of the first rotary drive 1 is equipped with a rotation angle sensor 3, or the boom 21, which is connected to the output shaft of the first rotary drive 1, is equipped with a rotation angle sensor 3. This facilitates the detection of the included angle between the two lifting bodies 2.

[0081] Optionally, each lifting block 23 is equipped with a displacement sensor to facilitate the detection of the distance between two lifting blocks 23 on each lifting device body 2.

[0082] In this embodiment, as Figure 1-4As shown, the output shaft of the preferred first rotary drive 1 is equipped with a rotation angle sensor 3, and each lifting block 23 is equipped with a displacement sensor. Especially when the item 100 is a cuboid or cube, the positioning of the four first hooks 231 on the two lifting bodies 2 can be accurately determined based on the dimensions of the item 100. In this embodiment, as... Figure 1-4 As shown, the exemplary configuration of the boom 21, which is connected to the output shaft of the first rotary drive 1, is equipped with a rotation angle sensor 3, that is, the boom 21 of the second lifting device body is equipped with a rotation angle sensor 3.

[0083] Specifically, such as Figure 5 As shown, taking the shape of item 100 as a cuboid as an example, the clamp α between the two lifting bodies 2 can be directly calculated based on the length A and width B of item 100, and the distance L between the two lifting blocks 23 on each lifting body 2 can also be directly calculated. The specific calculation method is as follows:

[0084] A=2*L*cos(α / 2); B=2*L*sin(α / 2); sin(α / 2)] / [cos(α / 2)]=B / A

[0085] Optionally, such as Figure 2 , Figure 3 and Figure 7-9 As shown, the boom 21 is provided with a sliding groove 212, which extends along a second orientation to both ends of the boom 21. Each lifting device body 2 also includes two protective covers 24, and the two protective covers 24 and two translation drive components 22 of each lifting device body 2 are correspondingly arranged. The protective covers 24 are slidably inserted into the sliding groove 212 along the second orientation and cover the outer periphery of the translation drive component 22. This reduces the risk of damage to the translation drive component 22 due to external forces and facilitates assembly and disassembly. Specifically, before lifting the item 100 with this adjustable lifting device, the protective covers 24 are slidably inserted into the sliding groove 212 along the second orientation and cover the outer periphery of the translation drive component 22 to avoid the risk of damage to the translation drive component 22 due to external forces during the lifting process.

[0086] Specifically, in this embodiment, such as Figure 6-9 As shown, the slide 212 includes two sub-slides 2121 distributed at intervals along the third orientation on both sides of the boom 21, and each sub-slide 2121 extends along the second orientation; the cover 24 includes a cover body 241 and two insertion parts 242, the two insertion parts 242 and the two sub-slides 2121 are arranged in a one-to-one correspondence, the insertion parts 242 can slide into the sub-slides 2121 along the second orientation so that the cover body 241 covers the outer periphery of the translation drive assembly 22, the first orientation and the second orientation are perpendicular and both are perpendicular to the third orientation.

[0087] Specifically, such as Figure 3 , Figure 7 and Figure 8 As shown, each of the two protective covers 24 on the lifting device body 2 has a recessed clearance groove 2411 extending along a second orientation on one of its adjacent sides. When the protective cover 24 covers the outer periphery of the translation drive assembly 22, the first hook 231 passes through the clearance groove 2411 along the first orientation, and at least the hooking part of the first hook 231 is located outside the protective cover 24. This ensures that the protective cover 24 covering the outer periphery of the translation drive assembly 22 does not affect the driving of the corresponding lifting block 23 along the second orientation by each translation drive assembly 22, so as not to affect the movement of the first hook 231 along the second orientation, thereby enabling the first hook 231 to lift the item 100.

[0088] Further optional, such as Figure 1-4 and Figure 6 As shown, each lifting device body 2 also includes two plugs 25, and the two plugs 25 of each lifting device body 2 are correspondingly set at both ends of the slide groove 212; the plugs 25 can be inserted into the slide groove 212 along the second orientation, and the protective cover 24 can abut against the plugs 25 along the second orientation to prevent the protective cover 24 from detaching from the boom 21.

[0089] As an alternative, the protective cover 24 can also be detachably connected to the boom 21 using bolts and nuts, snap-fit, or screws. The goal is simply to cover the outer periphery of the translation drive assembly 22 with the protective cover 24.

[0090] Among them, such as Figure 1 , Figure 4 , Figure 6 and Figure 7 As shown, the translation drive assembly 22 includes a second rotary drive component 221 and a lead screw 222. The second rotary drive component 221 is fixedly mounted on the boom 21. The output shaft of the second rotary drive component 221 is connected to the lead screw 222 and can drive the lead screw 222 to rotate around its own central axis. The lifting block 23 is slidably connected to the boom 21 along a second orientation and threadedly connected to the lead screw 222. The second rotary drive component 221 drives the lead screw 222 to rotate around its own central axis, and the lifting block 23 is slidably connected to the boom 21 along the second orientation and threadedly connected to the lead screw 222, so as to drive the lifting block 23 to translate along the second orientation, thereby enabling adjustment of the distance between the two lifting blocks 23 of the lifting device body 2. It can be understood that the axial direction of the lead screw 222, the central axis of the lead screw 222, and the second orientation are all parallel. Specifically, the second rotary drive component 221 is a motor.

[0091] As an alternative, the translation drive assembly 22 includes an electric actuator, with the lifting block 23 fixedly connected to the output end of the electric actuator. This also enables the lifting block 23 to be translated along a second orientation, thereby adjusting the distance between the two lifting blocks 23 of the lifting device body 2.

[0092] Among them, such as Figure 1-4 and Figure 6 As shown, each lifting arm 21 of the lifting device body 2 is equipped with a battery box 26, which provides power to the first rotary drive 1 and the translational drive assembly 22. In this embodiment, the battery box 26 on the first lifting device body provides power to the first rotary drive 1, and also provides power to the second rotary drive 221 and two displacement sensors on the first lifting device body; the battery box 26 on the second lifting device body provides power to the second rotary drive 221 and two displacement sensors on the second lifting device body, and also provides power to the rotation angle sensor 3.

[0093] Optionally, such as Figure 1-4 As shown, each boom 21 of the lifting device body 2 is equipped with two battery boxes 26, and the two battery boxes 26 of each lifting device body 2 are electrically connected to the two second rotary drive components 221 in a one-to-one correspondence. As an alternative, only one battery box 26 may be provided on the boom 21 of each lifting device body 2.

[0094] Further optional, such as Figure 1-4 As shown, the two battery boxes 26 of each spreader body 2 are located outside the two second rotary drives 221 along the second orientation. As an alternative, the two battery boxes 26 of each spreader body 2 are located between the two second rotary drives 221 along the second orientation.

[0095] In this embodiment, as Figure 1-4 As shown, each lifting arm 21 of each lifting body 2 is provided with two battery boxes 26. The two battery boxes 26 of each lifting body 2 are electrically connected to the two second rotary drive members 221 in a one-to-one correspondence, and the two battery boxes 26 of each lifting body 2 are located outside the two second rotary drive members 221 along the second orientation.

[0096] Among them, such as Figure 1 and Figure 2 As shown, a controller 4 is provided on the boom 21 of the lifting device body 2. The controller 4 is used to control the operation of the first rotary drive 1 and the translational drive assembly 22. Specifically, the first rotary drive 1, the second rotary drive 221, the rotation angle sensor 3, and the displacement sensor are all electrically connected to the controller 4. In this embodiment, the controller 4 is located at the top of the cantilever of the first lifting device body, and the battery box 26 on the first lifting device body is also used to provide power to the controller 4.

[0097] Taking item 100 as a cuboid, each first hook 231 can be detachably connected to the bottom of the corresponding lifting block 23, and each second hook 211 can be detachably connected to the top of the corresponding boom 21 as an example:

[0098] Before using the adjustable lifting device to lift the item 100, the length and width information of the item 100 are input to the controller 4. The controller 4 calculates the expected angle between the two lifting device bodies 2 and the expected distance between the two lifting blocks 23 of each lifting device body 2 based on the length and width information of the item 100. The controller 4 obtains the current angle between the two lifting device bodies 2 and the current distance between the two lifting blocks 23 of each lifting device body 2. The expected angle and the current angle are compared to calculate the angle adjustment amount. The current distance between the two lifting blocks 23 of each lifting device body 2 is compared with the expected distance to calculate the distance adjustment amount. Based on the angle adjustment amount, the controller 4 controls the first rotary drive 1 to drive the boom 21 connected to it to rotate around the fixed axis so that the angle between the two lifting device bodies 2 is the expected angle. Based on the distance adjustment amount, the controller 4 controls the two second rotary drive 221 of each lifting device body 2 to drive the corresponding lead screw 222 to rotate around its own central axis so that the distance between the two lifting blocks 23 of each lifting device body 2 is the expected distance.

[0099] After the included angle between the two lifting bodies 2 is the expected included angle, and the distance between the two lifting blocks 23 of each lifting body 2 is the expected distance, four protective covers 24 are placed on the outer periphery of the four translation drive components 22 in a corresponding manner, and two plugs 25 of each lifting body 2 are inserted into the two ends of the slide groove 212 in a corresponding manner, and then the item 100 is lifted by the four first hooks 231 of the adjustable lifting device.

[0100] After the lifting of item 100 is completed, if it is necessary to store the adjustable lifting device, all plugs 25 and all protective covers 24 should be removed from the corresponding booms 21. At least the first hooks 231 on the upper part of the lifting device body 2 along the first orientation should be removed, and at least the second hooks 211 on the lower part of the lifting device body 2 along the first orientation should be removed. The current included angle between the two lifting device bodies 2 should be obtained, and the first rotary drive 1 should be controlled to rotate the boom 21 connected to it based on the current included angle between the two lifting device bodies 2, so that the second lifting device body is located directly below the first lifting device body. It can be understood that the adjustable component is in the stored state at this time.

[0101] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An adjustable spreader, characterized in that The device includes a first rotary drive (1) and two lifting bodies (2), which are distributed at a distance along a first orientation. The first rotary drive (1) is fixedly mounted on the boom (21) of one of the lifting bodies (2). The output shaft of the first rotary drive (1) is rotatably passed through the boom (21) of one of the lifting bodies (2) and is connected to the boom (21) of the other lifting body (2). The output shaft of the first rotary drive (1) can drive the boom (21) connected to it to rotate around a fixed axis. The first orientation is parallel to the fixed axis. Each of the lifting device bodies (2) further includes two translation drive components (22) and two lifting blocks (23). The two translation drive components (22) of each of the lifting device bodies (2) are symmetrically distributed on both sides of the fixed axis, and the two lifting blocks (23) of each of the lifting device bodies (2) are correspondingly arranged at the output ends of the two translation drive components (22). Each translation drive component (22) can drive the corresponding lifting block (23) to translate along the second orientation, so that the two lifting blocks (23) of each of the lifting device bodies (2) can move closer or further away from each other along the second orientation. The lifting blocks (23) are used to lift the items (100), and the first orientation and the second orientation are perpendicular.

2. The adjustable spreader of claim 1, wherein, Along the first orientation, a first hook (231) is connected to the bottom of each of the lifting blocks (23), and a second hook (211) is connected to the top of the cantilever of at least one of the lifting bodies (2).

3. The adjustable lifting device according to claim 2, characterized in that: Along the first orientation, the bottom of the lifting block (23) of one of the lifting bodies (2) located above is detachably connected or hinged to the first hook (231); And / or, along the first orientation, the top of the cantilever of one of the lower lifting bodies (2) is detachably connected or hinged to the second hook (211).

4. The adjustable lifting device according to any one of claims 1-3, characterized in that: The output shaft of the first rotary drive (1) is equipped with a rotation angle sensor (3), or the boom (21) that is connected to the output shaft of the first rotary drive (1) is equipped with a rotation angle sensor (3); And / or, each of the lifting blocks (23) is equipped with a displacement sensor.

5. The adjustable spreader of any of claims 2-3, wherein, The boom (21) is provided with a sliding groove (212), which extends along the second orientation to both ends of the boom (21); Each of the lifting device bodies (2) also includes two protective covers (24). The two protective covers (24) and two translation drive components (22) of each of the lifting device bodies (2) are arranged in a one-to-one correspondence. The protective covers (24) are used to slide along the second orientation into the slide groove (212) and cover the outer periphery of the translation drive component (22).

6. The adjustable spreader of claim 5, wherein, Each of the two covers (24) of the lifting device body (2) is provided with a relief groove (2411) extending along the second orientation on one of the two closer sides. When the cover (24) covers the outer periphery of the translation drive assembly (22), the first hook (231) passes through the relief groove (2411) along the first orientation, and at least the hooking part of the first hook (231) is located outside the cover (24).

7. The adjustable spreader of claim 5, wherein, Each of the lifting device bodies (2) also includes two plugs (25), and the two plugs (25) of each of the lifting device bodies (2) and the two ends of the slide (212) are respectively provided; the plugs (25) can be inserted into the slide (212) along the second orientation, and the protective cover (24) can abut against the plugs (25) along the second orientation.

8. The adjustable spreader of any of claims 1-3, wherein, The translation drive assembly (22) includes a second rotary drive (221) and a lead screw (222). The second rotary drive (221) is fixedly mounted on the boom (21). The output shaft of the second rotary drive (221) is connected to the lead screw (222) and can drive the lead screw (222) to rotate around its own central axis. The lifting block (23) is slidably connected to the boom (21) along the second orientation and threadedly connected to the lead screw (222).

9. The adjustable spreader of any of claims 1-3, wherein, Each of the lifting bodies (2) is provided with a battery box (26) on its boom (21), which is used to provide power to the first rotary drive (1) and the translation drive assembly (22).

10. The adjustable spreader of any of claims 1-3, wherein, The boom (21) of the lifting body (2) is equipped with a controller (4), which is used to control the operation of the first rotary drive (1) and the translation drive assembly (22).

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