Lifting appliance

Abstract

The hoisting sling comprises a main beam structure, a base frame, a supporting structure, a walking structure and a locking structure, the first side, in the width direction, of the main beam structure is connected with a load through a first connecting structure, and the second side, in the width direction, of the main beam structure is provided with a first matching structure; the base frame is installed on the main beam structure in a sliding mode and connected with the hoisting equipment through a second connecting structure, and the second connecting structure comprises a weight sensor; the base frame is provided with a second matching structure used for installing the first matching structure so as to guide the base frame in a sliding mode. The supporting structure abuts against the main beam structure so as to support the main beam structure. The walking structure is axially and rotatably mounted on the base frame and abuts against the main beam structure; the locking structure is movably installed on the base frame and can penetrate through the first matching structure and the second matching structure so as to fix the relative positions of the base frame and the main beam structure and transmit loads. According to the lifting sling, loads can be reasonably distributed to the two cranes, so that the efficiency and economical efficiency of lifting operation are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting equipment, in particular to a hoisting spreader. BACKGROUND

[0002] When two cranes perform collaborative lifting operations, even if the weight of the hoisted object does not exceed the sum of the load of the two cranes, overloading of one of the cranes may still occur. Specifically, when the weight of the hoisted object (such as a large device) approaches the sum of the rated loads of the two cranes, and the lifting point position of the object is fixed and cannot be adjusted, an unbalanced load distribution problem is likely to occur. This imbalance can cause the actual load of one of the cranes to exceed its rated load threshold, directly leading to the risk of overloading operation of the crane.

[0003] To address the above risks, existing operation modes usually adopt two adjustment strategies: one is to repeatedly adjust the connection point on the load, and the other is to replace a crane with a higher rated load to improve the overall load redundancy. Both of these strategies will increase the time cost and equipment investment cost of the operation preparation link, not only prolonging the operation cycle, but also significantly reducing the overall efficiency and economy of the lifting operation. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a hoisting spreader that can reasonably distribute the load to two cranes without frequent adjustment of the connection point with the load, thereby improving the efficiency and economy of the lifting operation.

[0005] According to the hoisting spreader of the present application, the hoisting spreader comprises: a main beam structure, a first connection structure is installed on the first side in the width direction of the main beam structure, the first connection structure is connected with the load; a first matching structure is arranged on the second side in the width direction of the main beam structure; a base frame, which is slidingly installed on the main beam structure and connected with the hoisting equipment through a second connection structure, the second connection structure comprising a weight sensor; the base frame is provided with a second matching structure, and the first matching structure is installed on the second matching structure to slidingly guide the base frame; a support structure, which is installed on the base frame and abuts against the main beam structure to support the main beam structure; a walking structure, which is axially rotatably installed on the base frame and abuts against the main beam structure; the walking structure drives the base frame to slide along the main beam structure through axial rotation; a locking structure, which is movably installed on the base frame, the locking structure being capable of passing through the first matching structure and the second matching structure to fix the relative positions of the base frame and the main beam structure and transmit the load.

[0006] The lifting device according to the embodiments of this application has at least the following beneficial effects: The traveling structure rolls along the main beam, causing the base frame to slide relative to the main beam structure. This allows the two base frames to slide relative to each other. By adjusting the relative position of the two base frames, the load of the main beam structure can be easily distributed to the two lifting devices. The base frame is equipped with a weight sensor to detect the weight it is lifting, preventing overloading of the lifting devices. The locking structure fixes the relative position of the base frame and the main beam structure, preventing the base frame from sliding relative to the main beam structure and transferring the load during lifting, thus improving the stability and safety of the lifting device during use. The locking structure connects the base frame and the main beam structure to transfer the weight of the main beam structure and the load connected to it to the base frame, and then to the lifting devices through the second connecting structure.

[0007] In some embodiments of this application, the main beam structure includes a main plate and a side plate, the side plate being radially protruding from the surface of the main plate; The support structure includes rollers that abut against the side plate and can roll along the side plate; the walking structure abuts against the side plate.

[0008] In some embodiments of this application, the support structure further includes: The first base is installed on the base frame; The bracket is movably and vertically mounted on the first base, and the rollers are mounted on the bracket; A first elastic element is sleeved on the outer periphery of the bracket, and the two ends of the first elastic element abut against the bracket and the first base, respectively.

[0009] In some embodiments of this application, the base frame is equipped with a first driving member and a second driving member, the first driving member is mounted on the base frame, and the walking structure is mounted on the output end of the first driving member; the first driving member drives the walking structure to rotate axially. The lifting device also includes a second base, and the first drive component is mounted on the second base; The first end of the second base is hinged to the base frame. The second driving member is disposed at the second end of the second base and between the second base and the base frame. The two ends of the second driving member abut against the second base and the base frame respectively. The second driving member drives the second end of the second base to move toward the side plate, thereby causing the walking structure to abut against the side plate.

[0010] In some embodiments of this application, a limiting structure is also installed at the second end of the second base. The limiting structure passes through the second base and the base frame, and the two ends of the limiting structure abut against the opposite sides of the second base and the base frame, respectively. The second driving member is sleeved on the limiting structure.

[0011] In some embodiments of this application, the second mating structure is provided with a slot, and the first mating structure is installed in the slot; The first mating structure has a first through hole penetrating the first mating structure, and the side wall of the slot has a second through hole. The locking structure passes through the first through hole and the second through hole to fix the relative position of the base frame and the main beam structure and to transfer the load.

[0012] In some embodiments of this application, the first mating structure is provided with a plurality of first through holes, and the second mating structure is equipped with a detection structure for positioning the first through holes so that the second through hole is aligned with any of the first through holes.

[0013] In some embodiments of this application, the first through hole includes a first aperture segment and a second aperture segment, wherein the inner diameter of the first aperture segment is smaller than the inner diameter of the second aperture segment; When the main beam structure is connected to a load, the locking structure passes through the first aperture section; when the main beam structure is not connected to a load, the locking structure passes through the second aperture section.

[0014] In some embodiments of this application, the base frame is further provided with two receiving slots, which are arranged opposite to each other and both are located below the second mating structure; each receiving slot includes a first slot wall and a second slot wall opposite to each other, with the first slot wall located above the second slot wall; The support structure is provided in multiple ways, and the multiple support structures are arranged in two receiving slots, and the support structures are installed on the second slot wall; The main beam structure includes a main board and two side plates. The side plates protrude radially from opposite sides of the main board. The two side plates are respectively installed in the two receiving slots and are disposed between the support structure and the first slot wall. The walking structure is installed in the receiving groove and abuts against the side plate.

[0015] In some embodiments of this application, the lifting device further includes a power supply structure, which is detachably connected to the base frame.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a front view of an embodiment of this application; Figure 2 This is a cross-sectional view of an embodiment of this application; Figure 3 for Figure 1 A schematic diagram of the axonal structure of the central frame; Figure 4 for Figure 3 Assembly diagram of the central support structure; Figure 5 These are schematic diagrams of the walking structure and the assembly diagram of the locking structure in the embodiments of this application; Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0018] Icon labels: Main beam structure 100, first connecting hole 110, first connecting structure 111, first mating structure 120, first through hole 130, first diameter section 131, second diameter section 132, side plate 140; Base frame 200, second connecting structure 210, weight sensor 211, second mating structure 220, slot 221, guide cylinder 222, detection structure 230, power supply structure 240, receiving groove 250, first groove wall 251, second groove wall 252; Support structure 300, first base 310, bracket 320, first elastic element 330, roller 340; Walking structure 400, first driving component 410, second base 411, second driving component 420, limiting structure 430; Locking structure 500, telescopic component 510. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] In the description of this application, "multiple" refers to two or more. The use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or the order in which the technical features are indicated.

[0022] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0023] Reference Figures 1 to 6 This application discloses a lifting device, including a main beam structure 100 and a base frame 200. The base frame 200 is adjustablely and fixedly installed on the main beam structure 100. A first side of the main beam structure 100 in the width direction is connected to a load through a first connecting structure 111. The base frame 200 is installed on a second side of the main beam structure 100 in the width direction and is connected to lifting equipment through a second connecting structure 210. Specifically, refer to... Figure 1 As shown, a plurality of first connecting holes 110 are provided on the first side of the main beam structure 100 in the width direction. The plurality of first connecting holes 110 are arranged in parallel. The first connecting structure 111 is preferably a sling. The first connecting structure 111 is connected to one or more of the plurality of first connecting holes 110.

[0024] Two base frames 200 are installed on the second side of the main beam structure 100 in the width direction. The two base frames 200 can slide relative to each other and are fixed relative to the main beam structure 100, thereby reasonably distributing the load borne by the two lifting devices. The second connecting structure 210 is also preferably a sling. The second connecting structure 210 is connected to the base frame 200 and includes a weight sensor 211. The weight sensor 211 determines whether the lifting device is overloaded by detecting the load being lifted. For example, the warning value of the weight sensor 211 can be set to 90% of the rated load of the lifting device. If the weight sensor 211 issues a warning, the position of the base frame 200 on the main beam structure 100 needs to be adjusted to redistribute the load.

[0025] It is conceivable that load distribution can also be achieved by changing the connection position between the first connecting structure 111 and the first connecting hole 110, but load distribution is more efficient by adjusting the position of the base frame 200.

[0026] In some embodiments of this application, a first mating structure 120 is provided on the second side of the main beam structure 100 in the width direction, and a second mating structure 220 is provided on the base frame 200. The first mating structure 120 is installed on the second mating structure 220 to provide sliding guidance for the base frame 200. Specifically, refer to... Figure 2As shown, the second mating structure 220 is provided with a slot 221, and the first mating structure 120 is installed in the slot 221. The width of the slot 221 is slightly larger than the thickness of the main beam structure 100. When the first mating structure 120 is inserted into the slot 221, it restricts the shaking of the base frame 200 and improves the stability of the base frame 200.

[0027] In some embodiments of this application, the base frame 200 is equipped with a locking structure 500, which can pass through the first mating structure 120 and the second mating structure 220 to fix the relative position of the base frame 200 and the main beam structure 100 and to transfer loads. Specifically, refer to... Figure 2 , Figure 5 As shown, the first mating structure 120 is provided with a first through hole 130 penetrating the first mating structure 120, and the side wall of the slot 221 is provided with a second through hole. The locking structure 500 passes through the first through hole 130 and the second through hole to fix the relative position of the base frame 200 and the main beam structure 100 and to transmit the load.

[0028] In some specific embodiments of this application, the locking structure 500 is a pin, which is connected to a telescopic member 510. The telescopic member 510 is installed on the base frame 200, and the telescopic member 510 drives the locking structure 500 to move relative to the base frame 200. The telescopic member 510 can be a pneumatic telescopic device, a hydraulic telescopic device, an electric telescopic device, etc., and can be selected according to the actual situation. In the embodiments of this application, in order to facilitate the miniaturization of the lifting device, the telescopic member 510 of this application preferably adopts an electric telescopic device. When it is necessary to adjust the relative position between the base frame 200 and the main beam structure 100, the telescopic member 510 drives the locking structure 500 to retract, so that the first mating structure 120 and the second mating structure 220 are disengaged, thereby facilitating the sliding of the base frame 200 along the main beam structure 100; when the installation position of the base frame 200 is determined, the telescopic member 510 drives the locking structure 500 to extend and pass through the first through hole 130 and the second through hole to fix the relative position of the base frame 200 and the main beam structure 100 and transfer the load.

[0029] In some embodiments of this application, reference is made to Figure 1 As shown, the first mating structure 120 has multiple first through holes 130, and the base frame 200 has only one locking structure 500. When the second through hole is aligned with any one of the multiple first through holes 130, the locking structure 500 can pass through the first through hole 130 and the second through hole. To facilitate the alignment of the second through hole with the first through hole 130, the second mating structure 220 in this embodiment is equipped with a detection structure 230 for positioning the first through hole 130. The second detection structure 230 can be a photoelectric sensor, a contact switch, a vision sensor, or other detection device, and is not limited in this embodiment.

[0030] In some embodiments of this application, the second mating structure 220 is provided with a guide cylinder 222, the telescopic member 510 is installed in the guide cylinder 222, and the locking structure 500 passes through the guide cylinder 222. The guide cylinder 222 is used to slide and guide the locking structure 500.

[0031] In some embodiments of this application, the base frame 200 includes a main board and side plates 140, with the side plates 140 radially protruding from the surface of the main board; the base frame 200 is also equipped with a support structure 300, which abuts against the side plates 140 to support the main beam structure 100. Specifically, refer to... Figure 2 , Figure 3 As shown, there are multiple support structures 300 arranged in a row; the main beam structure 100 has two side plates 140, which protrude from opposite sides of the main beam, and each side plate 140 is supported by a corresponding support structure 300.

[0032] In some specific embodiments of this application, reference is made to Figure 2 , Figure 3 , Figure 5 As shown, the base frame 200 is provided with two receiving slots 250, which are arranged opposite to each other and are both located below the second mating structure 220; the opening sides of the two receiving slots 250 are both facing the main beam structure 100. The receiving slot 250 includes a first slot wall 251 and a second slot wall 252 opposite to each other, with the first slot wall 251 located above the second slot wall 252.

[0033] Multiple support structures 300 are arranged in two receiving slots 250. For example, if there are four support structures 300, two support structures 300 are installed in each receiving slot 250. The two support structures 300 installed in the same receiving slot 250 are spaced apart. Preferably, the two support structures 300 installed in the same receiving slot 250 are respectively located at both ends of the second slot wall 252.

[0034] Reference Figure 2 , Figure 3 , Figure 5 As shown, the support structure 300 is installed on the second groove wall 252, and the two side plates 140 are respectively installed in the two receiving grooves 250 and are located between the support structure 300 and the first groove wall 251. The side plates 140 can move up and down between the support structure 300 and the first groove wall 251, limiting the lifting range of the main beam structure 100.

[0035] As can be seen from the above, the base frame 200 can slide along the main beam structure 100. In order to facilitate the sliding of the base frame 200 and reduce the sliding resistance, the support structure 300 in this embodiment includes a roller 340. The roller 340 is installed on the top of the support structure 300 and abuts against the side plate 140.

[0036] Furthermore, in some embodiments of this application, reference is made to... Figure 4 As shown, the support structure 300 also includes a first base 310, a bracket 320, and a first elastic element 330. The first base 310 is mounted on the base frame 200, the bracket 320 is movably and vertically mounted on the first base 310, and a roller 340 is mounted on the bracket 320. The first elastic element 330 is sleeved on the outer periphery of the bracket 320, and its two ends abut against the bracket 320 and the first base 310, respectively. The roller 340 is connected to the bracket 320 via a pin, and is axially rotatably mounted on the pin. The first elastic element 330 is preferably a spring, and the elastic element ensures that the roller 340 always abuts against the side plate 140. The first base 310 has a positioning hole for the bracket 320 to be inserted, and part of the first elastic element 330 is installed in the positioning hole to axially limit the first elastic element 330, avoid structural damage caused by bending of the bracket 320, and improve the stability of the support structure 300 in supporting the main beam structure 100.

[0037] In some embodiments of this application, the base frame 200 is further equipped with a traveling structure 400, which is axially rotatably mounted on the base frame 200 and abuts against the main beam structure 100; the axial rotation of the traveling structure 400 causes the base frame 200 to slide along the main beam structure 100. Specifically, refer to... Figure 2 , Figure 3 , Figure 5 As shown, the walking structure 400 is installed in one of the receiving slots 250 and abuts against the lower surface of the side plate 140; in the implementation of this application, two support structures 300 are installed in a single receiving slot 250, and the walking structure 400 is disposed between the two support structures 300.

[0038] The walking structure 400 is a walking wheel. The walking structure 400 is connected to a first driving component 410, which is preferably a motor. The first driving component 410 is installed on the base frame 200. The walking structure 400 is connected to the output end of the first driving component 410. The first driving component 410 drives the walking structure 400 to rotate axially, causing the base frame 200 to slide along the main beam structure 100.

[0039] In some embodiments of this application, reference is made to Figure 2 As shown, the traveling structure 400 must always be in contact with the side plate 140. The axial rotation of the traveling structure 400 is necessary to drive the base frame 200 to slide along the main beam structure 100. To ensure that the traveling structure 400 always abuts against the side plate 140, the base frame 200 of this application is also equipped with a second driving member 420, which is used to drive the traveling structure 400 to abut against the side plate 140. Specifically, refer to... Figure 6As shown, the lifting device also includes a second base 411, the first end of which is hinged to the base frame 200, and a first drive member 410 is installed on the second base 411; a second drive member 420 is disposed at the second end of the second base 411 and between the second base 411 and the base frame 200, with both ends of the second drive member 420 abutting against the second base 411 and the base frame 200 respectively.

[0040] In a specific embodiment of this application, the second driving member 420 is preferably a spring, and multiple second driving members 420 are provided; the output end of the first driving member 410 extends toward the second end of the second base 411, and the walking structure 400 is connected to the output end of the first driving member 410, so the walking structure 400 is located above the second end of the second base 411. Multiple second driving members 420 drive the first end of the second base 411 to rotate around the hinge point with the base frame 200, causing the second end of the second base 411 to move upward, thereby driving the output end of the first driving member 410 and the walking structure 400 to move upward, thus ensuring that the walking structure 400 always abuts against the side plate 140. The position of the first driving member 410 installed on the second base 411 can be specifically set according to actual conditions, and is not limited in this embodiment; for example, the first driving member 410 can be installed at the first end of the second base 411, or at the second end of the second base 411, or between the first and second ends, etc., but it is generally preferred that the first driving member 410 be installed at the second end of the second base 411 or between the first and second ends. The first drive component 410 can be connected to the second base 411 by fasteners such as bolts, or by welding or other means.

[0041] In some embodiments of this application, to prevent the second driving member 420 from falling off, a limiting structure 430 is also installed at the second end of the second base 411. The limiting structure 430 passes through the second base 411 and the base frame 200, and its two ends abut against the opposite sides of the second base 411 and the base frame 200, respectively. The second driving member 420 is sleeved on the limiting structure 430. Specifically, the limiting structure 430 can be a bolt and a nut, with the bolt passing through the second base 411 and the base frame 200 and connected to the nut.

[0042] In some embodiments of this application, to reduce the size and weight of the lifting device, the first drive member 410 is also preferably a motor. The lifting device also includes a power supply structure 240, which is detachably connected to the base frame 200. The power supply structure 240 supplies power to the first drive member 410 and the telescopic member 510. Specifically, refer to... Figure 3 As shown, the power supply structure 240 may include a power supply box and a battery pack. The battery pack is detachably installed inside the power supply box. The power supply box can protect the battery pack and facilitates direct replacement of the battery pack, thereby improving operation and maintenance efficiency.

[0043] In some embodiments of this application, to facilitate the insertion and retraction of the locking structure 500, the first through hole 130 in this embodiment is designed as follows: Figure 1 The gourd-shaped structure shown has a first through-hole 130 comprising a first aperture section 131 and a second aperture section 132. The inner diameter of the first aperture section 131 is smaller than the inner diameter of the second aperture section 132, and... Figure 1 Taking the vertical direction as an example, the first aperture section 131 is located above the second aperture section 132.

[0044] It is important to understand that the locking structure 500 connects the base frame 200 and the main beam structure 100 by inserting the first through hole 130 and the second through hole, thereby transferring the weight of the main beam structure 100 and the load connected on the main beam structure 100 to the base frame 200, and then to the lifting equipment through the second connecting structure 210.

[0045] Specifically, when the first connecting structure 111 of the main beam structure 100 is not connected to a load, the main beam structure 100 rests on the support structure 300 and the traveling structure 400. Under the combined action of the first elastic member 330 and the second driving member 420, the support structure 300 and the traveling structure 400 jointly support the side plate 140 of the main beam structure 100, causing the side plate 140 of the main beam structure 100 to rise to a position abutting against the first groove wall 251, thereby aligning the second diameter section 132 of the first through hole 130 with the second through hole, facilitating the insertion or retraction of the locking structure 500.

[0046] When the first connecting structure 111 of the main beam structure 100 is connected to the load, the main beam structure 100 will compress the first elastic member 330 and the second driving member 420 downward under the action of the load, so that the main beam structure 100 descends to the position where the first aperture section 131 is aligned with the second through hole. At this time, the locking structure 500 plays the role of transferring the weight of the main beam structure 100 and the load connected on the main beam structure 100 to the base frame 200. At the same time, since the radial movement range of the locking structure 500 is reduced at this time, the stability of the locking structure 500 connecting the base frame 200 and the main beam structure 100 will also be improved.

[0047] It is important to note that when adjusting the position of the base frame 200 on the main beam structure 100, the main beam structure 100 should be in a state of no load connection. For example, when lifting equipment is lifting a load using the lifting device of this embodiment, if one of the lifting equipment is found to be exceeding its rated load and it is necessary to adjust the position of the base frame 200 on the main beam structure 100 to redistribute the load, the load must first be lowered until the first connecting structure 111 is in a state of no load before the relative position of the base frame 200 and the main beam structure 100 can be adjusted.

[0048] The lifting device of this application embodiment uses a traveling structure 400 to roll along the main beam, causing the base frame 200 to slide relative to the main beam structure 100. This allows the two base frames 200 to slide relative to each other. By adjusting the relative position of the two base frames 200, it is easy to distribute the load of the main beam structure 100 to the two lifting devices. The base frame 200 is equipped with a weight sensor 211 to detect the weight of the load lifted by the base frame 200, thus preventing overloading of the lifting devices. The locking structure 500 fixes the relative position of the base frame 200 and the main beam structure 100, preventing the base frame 200 from sliding relative to the main beam structure 100 and transferring the load during lifting, thereby improving the stability and safety of the lifting device during use.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine the different embodiments or examples described in this specification.

[0050] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A lifting spreader, characterized in that, The crane includes: a main beam structure, a first side of which in the width direction is provided with a first connecting structure connected with a load; a second side of the main beam structure in the width direction is provided with a first matching structure; a base frame is slidingly installed on the main beam structure and connected with a hoisting device through a second connecting structure, the second connecting structure including a weight sensor; the base frame is provided with a second matching structure, and the first matching structure is installed on the second matching structure to slidingly guide the base frame; a support structure is installed on the base frame and abuts against the main beam structure to support the main beam structure; a walking structure is installed on the base frame in an axially rotatable manner and abuts against the main beam structure; the walking structure drives the base frame to slide along the main beam structure in an axial rotation manner; a locking structure is movably installed on the base frame and can pass through the first matching structure and the second matching structure to fix the relative positions of the base frame and the main beam structure and transmit a load.

2. Lifting spreader according to claim 1, characterized in that: The main beam structure includes a main plate and a side plate, the side plate protruding radially from the surface of the main plate; the support structure includes a roller, the roller abutting against the side plate and being able to roll along the side plate; the walking structure abuts against the side plate.

3. The lifting spreader according to claim 2, characterized in that: The support structure further includes: a first base installed on the base frame; a support movably installed on the first base, the roller being installed on the support; a first elastic member sleeved on the outer periphery of the support, two ends of the first elastic member respectively abutting against the support and the first base.

4. The lifting spreader according to claim 2, characterized in that: The base frame is installed with a first driving member and a second driving member, the first driving member being installed on the base frame, the walking structure being installed on the output end of the first driving member; the first driving member drives the walking structure to rotate axially; the crane also includes a second base, the first driving member being installed on the second base; a first end of the second base is hinged to the base frame, the second driving member being arranged on a second end of the second base and between the second base and the base frame, two ends of the second driving member respectively abutting against the second base and the base frame, the second driving member driving the second end of the second base to move towards the side plate to drive the walking structure to abut against the side plate.

5. A lifting spreader according to claim 4, characterised in that: The second end of the second base is also installed with a limiting structure, the limiting structure passing through the second base and the base frame, two ends of the limiting structure respectively abutting against two sides of the second base and the base frame opposite to each other; the second driving member is sleeved on the limiting structure.

6. The lifting spreader according to claim 1, characterized in that: The second matching structure is provided with a slot, and the first matching structure is installed in the slot; the first matching structure is provided with a first through hole penetrating through the first matching structure, a side wall of the slot is provided with a second through hole, and the locking structure passes through the first through hole and the second through hole to fix the relative positions of the base frame and the main beam structure and transmit a load.

7. A lifting spreader according to claim 6, characterised in that: The first matching structure is provided with a plurality of first through holes, and the second matching structure is installed with a detection structure for positioning the first through holes to align the second through hole with any of the first through holes.

8. A lifting spreader according to claim 7, characterised in that: The first through hole comprises a first aperture section and a second aperture section, an inner diameter of the first aperture section is smaller than an inner diameter of the second aperture section; When the main beam structure is connected with a load, the locking structure penetrates into the first aperture section; when the main beam structure is not connected with a load, the locking structure penetrates into the second aperture section.

9. The lifting spreader according to claim 1, characterized in that: The base frame is further provided with two accommodating grooves, the two accommodating grooves are oppositely arranged and are both arranged below the second matching structure; the accommodating groove comprises opposite first and second groove walls, the first groove wall is located above the second groove wall; The support structure is provided in plurality, the plurality of support structures are arranged in the two accommodating grooves, and the support structure is mounted to the second groove wall; The main beam structure comprises a main plate and two side plates, the side plate protrudes radially from opposite sides of the main plate, the two side plates are respectively mounted in the two accommodating grooves and are arranged between the support structure and the first groove wall; The walking structure is mounted in the accommodating groove and abuts against the side plate.

10. The lifting spreader according to claim 1, characterized in that: The lifting spreader further comprises a power supply structure, and the power supply structure is detachably connected with the base frame.

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