Base, lower car assembly and hoisting device

Abstract

The application relates to a base, a lower vehicle assembly and hoisting equipment, and relates to the technical field of engineering machinery. The base comprises a seat body and two groups of cross beam sets. The two groups of cross beam sets are arranged on opposite sides of the seat body. Each group of cross beam sets comprises a main beam and a folding beam. The main beam is connected with the seat body. The folding beam comprises a first support beam and a second support beam. The first support beam is rotationally connected with the end of the main beam and is used for folding towards the area between the two groups of cross beam sets. The second support beam is detachably connected with the end of the first support beam which is away from the main beam. The length of the corresponding two first support beams in the two groups of cross beam sets is less than the minimum distance between the two groups of cross beam sets. The base, the lower vehicle assembly and the hoisting equipment can meet the two requirements of ensuring that the cross beam sets do not interfere during the folding process and ensuring that the overall operation stability of the hoisting equipment is guaranteed after being unfolded.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, specifically to a base, a lowering assembly, and a lifting device. Background Technology

[0002] For tracked cranes, two sets of tracks are mounted on two sets of crossbeams on opposite sides of the base. During operation, track switching is generally required. Specifically, during transport, the two sets of crossbeams need to be folded, switching to a narrow-gauge configuration for easier transport. During normal operation, the two sets of crossbeams need to be unfolded, switching to a wide-gauge configuration. In related technologies, to ensure the overall operational stability of the crane in the wide-gauge configuration, the unfolded length of the two sets of crossbeams needs to be relatively long. However, this can lead to interference when folding the longer crossbeams during the narrow-gauge switching process, affecting folding efficiency. Conversely, shortening the length of the crossbeams to avoid interference after folding results in shorter unfolded lengths, also impacting the overall operational stability of the crane. In other words, the current technology cannot simultaneously address both the need for interference-free folding and the requirement for stable overall crane operation after unfolding. Summary of the Invention

[0003] To address the aforementioned technical problems, embodiments of this application provide a base, a lowering assembly, and a lifting device that can simultaneously meet the two requirements of preventing interference during the folding process of the crossbeam assembly and ensuring the overall operational stability of the lifting device after unfolding.

[0004] Firstly, a base is provided, comprising:

[0005] seat body;

[0006] Two sets of crossbeams are respectively located on opposite sides of the base. Each set of crossbeams includes a main beam and a folding beam. The main beam is connected to the base. The folding beam includes a first support beam and a second support beam. The first support beam is rotatably connected to the end of the main beam and is used to fold toward the area between the two sets of crossbeams. The second support beam is detachably connected to the end of the first support beam away from the main beam.

[0007] In this case, the length of the two first support beams corresponding to the two sets of beams is less than the minimum distance between the two sets of beams.

[0008] According to a first aspect of this application, the first support beam is provided with one of a first limiting shaft and a first limiting hole, and the second support beam is provided with the other of the first limiting shaft and the first limiting hole, wherein the first limiting shaft and the first limiting hole are detachably coupled.

[0009] According to a first aspect of this application, the top of the first support beam is provided with a second limiting hole, the top of the second limiting hole is provided with a notch, the second support beam is provided with a second limiting shaft, and the second limiting shaft is engaged with or disengaged from the second limiting hole through the notch.

[0010] According to a first aspect of this application, the top of the first support beam is provided with a first mounting hole.

[0011] According to a first aspect of this application, the folding beam further includes a third support beam, which is rotatably connected to the end of the main beam, and the third support beam is used to fold toward an area outside the two sets of the crossbeam groups;

[0012] The first and second support beams are closer to the area between the two sets of crossbeams than the third support beam.

[0013] According to a first aspect of this application, the folding beam further includes a connecting beam, the two ends of which are detachably connected to the second support beam and the third support beam, respectively.

[0014] According to a first aspect of this application, the top of the third support beam is provided with a second mounting hole.

[0015] Secondly, an off-vehicle assembly is also provided, including:

[0016] The base as described in the previous embodiment;

[0017] Two sets of track frames, each set of track frames being detachably connected to the folding beam in one of the two sets of crossbeam groups.

[0018] According to a second aspect of this application, when the first support beam, the second support beam, and the main beam all extend along a preset direction, the end of the second support beam away from the first support beam extends beyond the central axis of the track frame along the preset direction.

[0019] According to a second aspect of this application, the vehicle dismount assembly further includes:

[0020] The connecting rod is provided with a first connecting hole, a second connecting hole and a third connecting hole. The first connecting hole and the third connecting hole are respectively located at opposite ends of the connecting rod. The second connecting hole is located between the first connecting hole and the third connecting hole. The first connecting hole is rotatably engaged with the main beam. One of the second connecting hole and the third connecting hole is rotatably engaged with the track frame.

[0021] The base, trolley assembly, and lifting equipment provided in this application embodiment, on the one hand, improve folding efficiency by removing the second support beam from the first support beam during the switching to narrow rail mode and ensuring that the lengths of the two corresponding first support beams in the two sets of crossbeams are less than the minimum distance between the two sets of crossbeams. On the other hand, it increases the overall length of the crossbeam assembly by unfolding the first support beam to be in the same direction as the main beam and assembling the second support beam at the end of the first support beam away from the main beam during the switching to wide rail mode. Attached Figure Description

[0022] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0023] Figure 1 This is a schematic diagram of the structure of a lifting device provided for an exemplary embodiment of this application.

[0024] Figure 2 A schematic diagram of the wide-rail state of the vehicle assembly provided in an exemplary embodiment of this application from a first-view perspective.

[0025] Figure 3 A schematic diagram of the wide-rail state of the vehicle assembly provided in an exemplary embodiment of this application from a second perspective.

[0026] Figure 4 A schematic diagram of the narrow rail state of the vehicle assembly provided in an exemplary embodiment of this application from a first-view perspective.

[0027] Figure 5 A schematic diagram of the narrow rail state of the vehicle assembly provided in an exemplary embodiment of this application from a second perspective.

[0028] Figure 6 A structural schematic diagram of the narrow rail state of the base provided for an exemplary embodiment of this application from a first-view perspective.

[0029] Figure 7 A structural schematic diagram of the narrow rail state of the base provided for an exemplary embodiment of this application from a second perspective.

[0030] Figure 8 A schematic diagram of the wide rail state of the base provided for an exemplary embodiment of this application from a first-view perspective.

[0031] Figure 9 A schematic diagram of the wide rail state of the base provided for an exemplary embodiment of this application from a second perspective.

[0032] Figure 10 This is a schematic diagram of a structure in which a second support beam is disassembled from a first support beam, as provided in an exemplary embodiment of this application.

[0033] Figure 11 for Figure 8 Enlarged diagram of point C in the middle.

[0034] Figure 12 for Figure 4 Enlarged diagram of point D in the middle.

[0035] Figure 13 This is a schematic diagram of the structure of a connecting rod provided for an exemplary embodiment of this application.

[0036] Reference numerals: 100-base; 110-seat body; 120-crossbeam assembly; 121-main beam; 122-folding beam; 1221-first support beam; 1222-second support beam; 1223-first limiting shaft; 1224-first limiting hole; 1225-second limiting hole; 1226-notch; 1227-second limiting shaft; 1228-third support beam; 1229-second assembly hole; 1230-first assembly hole; 200-lower vehicle assembly; 210-track frame; 220-connecting rod; 221-first connecting hole; 222-second connecting hole; 223-third connecting hole; 300-lifting equipment; 310-upper vehicle assembly. Detailed Implementation

[0037] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0038] Figure 1 This is a schematic diagram of the structure of a lifting device provided for an exemplary embodiment of this application. Figure 1 As shown, the lifting equipment 300 provided in this application embodiment may include a lower carriage assembly 200 and an upper carriage assembly 310, with the upper carriage assembly 310 and the lower carriage assembly 200 rotatingly connected by a slewing bearing.

[0039] like Figure 1 As shown, the upper assembly 310 is equipped with components such as a cab and a crane boom.

[0040] Figure 2 A schematic diagram of the wide-rail state of the vehicle assembly provided in an exemplary embodiment of this application from a first-view perspective. Figure 3A schematic diagram of the wide-rail state of the vehicle assembly provided in an exemplary embodiment of this application from a second perspective. Figure 4 A schematic diagram of the narrow rail state of the vehicle assembly provided in an exemplary embodiment of this application from a first-view perspective. Figure 5 A structural schematic diagram of the narrow-rail state of the aisle assembly provided as an exemplary embodiment of this application, viewed from a second perspective. (See diagram below.) Figures 2 to 5 As shown, the undercarriage assembly 200 provided in this application embodiment may include a base 100 and two sets of track frames 210. The base 100 is rotatably connected to the upper vehicle assembly 310 through the aforementioned slewing bearing, and the two sets of track frames 210 are detachably connected to the base 100.

[0041] It should be noted that a portion of the base 100 can be unfolded or folded when the lower assembly 200 is in its wide-rail state (e.g., Figure 2 and Figure 3 As shown in the diagram, a portion of the base 100 unfolds, the distance between the two sets of track frames 210 is larger, and the overall stability of the lifting equipment 300 is enhanced; in the narrow rail state of the undercarriage assembly 200 (as shown in the diagram), Figure 4 and Figure 5 As shown in the diagram, part of the base 100 is folded, the distance between the two sets of track frames 210 is small, it occupies little space, meets transportation standards, and effectively improves transfer efficiency. The structure of the base 100 is described in detail below.

[0042] Figure 6 A structural schematic diagram of the narrow rail state of the base provided for an exemplary embodiment of this application from a first-view perspective. Figure 7 A structural schematic diagram of the narrow rail state of the base provided for an exemplary embodiment of this application from a second perspective. Figure 8 A schematic diagram of the wide rail state of the base provided for an exemplary embodiment of this application from a first-view perspective. Figure 9 A schematic diagram of the wide-rail configuration of the base provided as an exemplary embodiment of this application, viewed from a second perspective. (See diagram below.) Figures 6 to 9 As shown, the base 100 provided in this embodiment may include a base body 110 and two sets of crossbeams 120. The base body 110 can be rotatably connected to the aforementioned upper vehicle assembly 310 via the aforementioned slewing bearing. The two sets of crossbeams 120 are respectively located on opposite sides of the base body 110. The two sets of crossbeams 120 are respectively connected to the aforementioned two sets of track frames 210. Each set of crossbeams 120 includes a main beam 121 and a folding beam 122. The main beam 121 is connected to the base body 110. The folding beam 122 can be folded or unfolded relative to the main beam 121 to meet the aforementioned requirement of switching to narrow rails or wide rails.

[0043] It should be noted that the folding beams 122 in the two sets of crossbeams 120 are detachably connected to the two sets of track frames 210. Before folding or unfolding, the connection between the folding beams 122 and the track frames 210 can be disconnected to ensure that the folding beams 122 are not fixed by the track frames 210, thus facilitating the folding or unfolding of the folding beams 122; after folding or unfolding, the folding beams 122 and the track frames 210 can be fixed to each other to ensure the stability of the connection between the folding beams 122 and the track frames 210.

[0044] In practical applications, the track frame 210 has through holes corresponding to the positions of the folding beam 122. The folding beam 122 mates with the through holes, which can restrict the folding beam 122 in the Y-axis and Z-axis directions (see reference). Figure 2 and Figure 4 It moves within a spatial rectangular coordinate system. Generally, the folding beam 122 is fixed to the track frame 210 by a pin, which is along the Z-axis (refer to...). Figure 2 and Figure 4 Insert the folding beam 122 and the track frame 210 into the spatial rectangular coordinate system.

[0045] It should be noted that the seat 110 is a box structure formed by welding multiple plates, and its cross-sectional dimensions match those of the slewing bearing. The two sets of crossbeams 120 are symmetrically arranged about the seat 110.

[0046] like Figures 6 to 9 As shown, the folding beam 122 may include a first support beam 1221 and a second support beam 1222. The first support beam 1221 is rotatably connected to the end of the main beam 121. The first support beam 1221 may face the area between the two sets of crossbeams 120 (see reference). Figure 7 and Figure 9 The area indicated by the middle arrow A is folded, and the second support beam 1222 is detachably connected to the end of the first support beam 1221 away from the main beam 121.

[0047] It should be noted that the first support beam 1221 and the end of the main beam 121 can be rotatably connected by inserting a pin along the Z-axis into the end of the first support beam 1221 and the end of the main beam 121 to form a pivot structure.

[0048] Figure 10 This is a schematic diagram illustrating the structure of a second support beam detached from a first support beam, as provided in an exemplary embodiment of this application. (In conjunction with...) Figure 10 When it is necessary to switch to narrow rail mode, the second support beam 1222 can be removed from the first support beam 1221 along the Z-axis direction. Then, the first support beam 1221 can be folded toward the area between the two sets of crossbeams 120 to shorten the overall length of the crossbeams 120 along the X-axis direction, thereby shortening the distance between the two sets of track frames 210 to meet the transfer requirements and facilitate quick transfer.

[0049] It should be noted that the lengths of the two corresponding first support beams 1221 in the two sets of crossbeams 120 are less than the minimum distance between the two sets of crossbeams 120. Therefore, after the second support beam 1222 is removed from the first support beam 1221, no interference will occur during the folding process of the two corresponding first support beams 1221 in the two sets of crossbeams 120 toward the area between the crossbeam sets 120. Figure 9 For example, the two first support beams 1221 in the two sets of crossbeam groups 120 can be understood as the first support beam 1221 at the left end of one set of crossbeam groups 120 corresponding to the first support beam 1221 at the left end of the other set of crossbeam groups 120, and the first support beam 1221 at the right end of one set of crossbeam groups 120 corresponding to the first support beam 1221 at the right end of the other set of crossbeam groups 120.

[0050] In one embodiment, the two main beams 121 are distributed in parallel, and the aforementioned "minimum distance between the two crossbeam groups 120" can be understood as the distance between the two main beams 121.

[0051] When switching to the wide-gauge mode is required, the first support beam 1221 can be rotated to the unfolded state, that is, the first support beam 1221 and the main beam 121 are in the same direction. Then, the second support beam 1222 is assembled at the end of the first support beam 1221 away from the main beam 121 to increase the length of the crossbeam assembly 120 in the X-axis direction. On the one hand, the increased length of the crossbeam assembly 120 can effectively improve the overall operational stability of the lifting equipment 300. On the other hand, during lifting, the load is transmitted from the upper assembly 310 through the slewing bearing to the base 100, and then through the first support beam 1221 and the second support beam 1222 to the crawler frame 210, and then to the ground. In other words, adding the second support beam 1222 can increase the force transmission path, so that the folding beam 122 as a whole can withstand greater forces and reduce the structural strength requirements of the third support beam 1228 (described later).

[0052] It should be understood that the length of the second support beam 1222 can be set according to actual conditions. In one embodiment, the length of the second support beam 1222 can be set according to the position of the central axis of the track frame 210. Specifically, as shown in the figure... Figure 3 and Figure 9 As shown, both the folding beam 122 and the main beam 121 are along a preset direction ( Figure 3 In the state of extending along the X-axis, the end of the folding beam 122 away from the main beam 121 (i.e., the end of the second support beam 1222 away from the first support beam 1221) extends along a preset direction ( Figure 3 (in the X-axis direction) extends beyond the centerline of track frame 210 (reference) Figure 3(The straight line indicated by the middle arrow E). In this way, the folding beam 122 can provide better support for the track frame 210, effectively improving the stability of the lifting equipment 300 during operation. The base 100 and lifting equipment 300 provided in this application embodiment, on the one hand, when switching to the narrow rail state, by removing the second support beam 1222 from the first support beam 1221 and ensuring that the length of the two corresponding first support beams 1221 in the two sets of crossbeam groups 120 is less than the minimum distance between the two crossbeam groups 120, the two first support beams 1221 will not interfere during folding, thus improving folding efficiency; on the other hand, when switching to the wide rail state, by unfolding the first support beam 1221 to be in the same direction as the main beam 121 and assembling the second support beam 1222 at the end of the first support beam 1221 away from the main beam 121, the overall length of the crossbeam group 120 is increased, thereby ensuring the operational stability of the lifting equipment 300 in the wide rail state.

[0053] Figure 11 for Figure 8 Enlarged diagram of point C in the middle. (See diagram below.) Figure 11 As shown, the first support beam 1221 is provided with a first limiting hole 1224, and the second support beam 1222 is provided with a first limiting shaft 1223. The first limiting shaft 1223 and the first limiting hole 1224 are detachably engaged, which can limit and fix the first support beam 1221 and the second support beam 1222.

[0054] Specifically, in combination Figure 8 and Figure 11 The first limiting hole 1224 is opened along the Y-axis direction, and the first limiting shaft 1223 is assembled into the first limiting hole 1224 along the Y-axis direction to limit the first support beam 1221 and the second support beam 1222 in the X-axis direction and Z-axis direction.

[0055] In one embodiment, the first support beam 1221 may be provided with a first limiting shaft 1223, and the second support beam 1222 may be provided with a corresponding first limiting hole 1224. The first limiting shaft 1223 and the first limiting hole 1224 are detachably engaged.

[0056] In one embodiment, there are multiple first limiting holes 1224, and the number of first limiting shafts 1223 is the same as the number of first limiting holes 1224, and they correspond one-to-one.

[0057] like Figure 11As shown, the top of the first support beam 1221 is provided with a second limiting hole 1225, and the top of the second limiting hole 1225 is provided with a notch 1226. The second support beam 1222 is provided with a second limiting shaft 1227. Specifically, during the process of assembling the second support beam 1222 into the first support beam 1221, the second limiting shaft 1227 can be inserted into the second limiting hole 1225 along the notch 1226. The second limiting shaft 1227 cooperates with the second limiting hole 1225 to limit the first support beam 1221 and the second support beam 1222. During the process of removing the second support beam 1222 from the first support beam 1221, the second limiting shaft 1227 can be removed from the second limiting hole 1225 along the notch 1226 for easy disassembly.

[0058] Specifically, in combination Figure 8 and Figure 11 The second limiting hole 1225 is opened along the Y-axis direction. The second limiting shaft 1227 can be installed into the second limiting hole 1225 along the Y-axis direction, or it can be installed into the second limiting hole 1225 along the Z-axis direction through the notch 1226.

[0059] It should be noted that in practical applications, when the second support beam 1222 needs to be disassembled from the first support beam 1221, the first limiting shaft 1223 can be removed from the first limiting hole 1224 first, and then the second support beam 1222 can be hoisted from the top using a lifting device. During the hoisting process, the second limiting shaft 1227 can remove the second limiting hole 1225 along the Z-axis direction through the notch 1226. This effectively improves the disassembly efficiency of the second support beam 1222. In one embodiment, the tops of the first support beam 1221 and the second support beam 1222 are basically flush. This ensures that when the first support beam 1221 and the second support beam 1222 deform, both can simultaneously contact the track frame 210, effectively optimizing the stress conditions.

[0060] like Figures 6 to 9 As shown, the folding beam 122 may also include a third support beam 1228, which is rotatably connected to the end of the main beam 121. The first support beam 1221 and the second support beam 1222 are closer to the area between the two sets of crossbeams 120 than the third support beam 1228. That is, the first support beam 1221 and the second support beam 1222 are located inside the two sets of crossbeams 120, and the third support beam 1228 is located outside the two sets of crossbeams 120.

[0061] In practical applications, during the switch to narrow rails, the second support beam 1222 is detached from the first support beam 1221, with the first support beam 1221 facing the area between the two sets of crossbeams 120 (see reference). Figure 7 and Figure 9The area indicated by the middle arrow A) is folded, and the third beam 1228 faces the area outside the two sets of crossbeams 120 (see reference). Figure 7 and Figure 9 The area indicated by the middle arrow B) is folded, that is, the folding direction of the first support beam 1221 and the third support beam 1228 is opposite. In this way, during the folding process of the first support beam 1221 and the third support beam 1228, the first support beam 1221 and the third support beam 1228 are less likely to interfere with each other.

[0062] In the wide-gauge configuration, the second support beam 1222 is assembled onto the first support beam 1221. The first support beam 1221, the second support beam 1222, the third support beam 1228, and the main beam 121 all extend along the X-axis (see reference). Figure 9 (As shown in the diagram), in this way, the first support beam 1221, the second support beam 1222, and the third support beam 1228 can all be used to connect the track frame 210, which can enhance the connection strength and improve the stability of the lifting equipment 300 during operation.

[0063] In one embodiment, the first support beam 1221, the second support beam 1222, and the third support beam 1228 are all block structures to meet structural strength requirements.

[0064] In one embodiment, the folding beam 122 may further include a connecting beam, the two ends of which are detachably connected to the second support beam 1222 and the third support beam 1228, respectively. In practical applications, in the wide-rail state, connecting the second support beam 1222 and the third support beam 1228 with the connecting beam can enhance the connection strength between the second support beam 1222 and the third support beam 1228, preventing the second support beam 1222 and the third support beam 1228 from rotating relative to the main beam 121; before switching from the wide-rail state to the narrow-rail state, the connecting beam can be disassembled first, then the second support beam 1222 can be disassembled, and then the first support beam 1221 and the third support beam 1228 can be folded respectively.

[0065] like Figures 8 to 11 As shown, the top of the first support beam 1221 is provided with a first assembly hole 1230.

[0066] like Figures 8 to 11 As shown, the top of the third support beam 1228 is provided with a second assembly hole 1229.

[0067] In practical applications, whether in narrow or wide rail condition, the first mounting hole 1230 and the second mounting hole 1229 can be connected to the track frame 210 through connecting parts such as pins and bolts to improve the connection strength between the first support beam 1221, the third support beam 1228 and the track frame 210.

[0068] Figure 12 for Figure 4Enlarged diagram of point D in the middle. Figure 13 This is a schematic diagram of the structure of a connecting rod provided for an exemplary embodiment of this application. Figure 12 and Figure 13 As shown, the lifting equipment may also include a connecting rod 220, which has a first connecting hole 221, a second connecting hole 222 and a third connecting hole 223. The first connecting hole 221 and the third connecting hole 223 are respectively located at opposite ends of the connecting rod 220, and the second connecting hole 222 is located between the first connecting hole 221 and the third connecting hole 223. The first connecting hole 221 is rotatably engaged with the main beam 121, and one of the second connecting hole 222 and the third connecting hole 223 is engaged with the track frame 210.

[0069] Specifically, in the narrow rail state, the second connecting hole 222 cooperates with the track frame 210, and the connecting rod 220 can increase the connection strength between the track frame 210 and the base 110, so that the lifting equipment 300 can maintain the narrow rail state; in the medium rail state, the third connecting hole 223 cooperates with the track frame 210, and the lifting equipment 300 can use the medium rail state to perform relevant operations in specific working scenarios, and the connecting rod 220 can improve the operating stability of the lifting equipment 300 in the medium rail state.

[0070] It should be noted that the aforementioned "middle rail state" can be understood as a transitional state between the narrow rail state and the wide rail state. That is, the distance between the two sets of track frames 210 in the middle rail state is greater than the distance between the two sets of track frames 210 in the narrow rail state, but less than the distance between the two sets of track frames 210 in the wide rail state.

[0071] In one embodiment, the lifting device 300 may further include a telescopic cylinder, the cylinder body of which is connected to the base 110, and the piston rod of which is connected to the track frame 210. In practical applications, during the process of switching from a wide-gauge state to a narrow-gauge state, the piston rod of the telescopic cylinder retracts, causing the track frame 210 to move closer to the base 110, thus shortening the distance between the two sets of track frames 210; similarly, during the process of switching from a narrow-gauge state to a wide-gauge state, the piston rod of the telescopic cylinder gradually extends, causing the track frame 210 to move away from the base 110, thus increasing the distance between the two sets of track frames 210.

[0072] It should be noted that during the switch from wide-gauge to narrow-gauge mode, the telescopic cylinder can first be controlled to move the track frame 210 towards the base 110. After the track frame 210 moves, the first support beam 1221, the second support beam 1222, and the third support beam 1228 are exposed (because in the wide-gauge mode, the first support beam 1221, the second support beam 1222, and the third support beam 1228 are located within the coverage area of ​​the track frame 210, thus providing support). This facilitates the placement of the first support beam 1221 and the second support beam 1222. 22 and the third support beam 1228 are removed from the track frame 210, and then the second support beam 1222 is removed from the first support beam 1221. Then the first support beam 1221 and the third support beam 1228 are folded respectively (the folding process can be referred to the previous description). After folding, the first support beam 1221 and the third support beam 1228 can be connected to the moved track frame 210 with pins to fix the first support beam 1221, the third support beam 1228 and the track frame 210 relatively, so that the lifting equipment can maintain the narrow rail state for a long time.

[0073] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0074] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0075] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0076] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0077] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A base, characterized in that, include: base(110); Two sets of crossbeams (120) are respectively located on opposite sides of the base (110). Each set of crossbeams (120) includes a main beam (121) and a folding beam (122). The main beam (121) is connected to the base (110). The folding beam (122) includes a first support beam (1221) and a second support beam (1222). The first support beam (1221) is rotatably connected to the end of the main beam (121), and the first support beam (1221) is used to fold toward the area between the two sets of crossbeams (120). The second support beam (1222) is detachably connected to the end of the first support beam (1221) away from the main beam (121). Among them, the length of the two first support beams (1221) corresponding to the two sets of beam groups (120) is less than the minimum distance between the two sets of beam groups (120).

2. The base according to claim 1, characterized in that, The first support beam (1221) is provided with one of a first limiting shaft (1223) and a first limiting hole (1224), and the second support beam (1222) is provided with the other of the first limiting shaft (1223) and the first limiting hole (1224). The first limiting shaft (1223) and the first limiting hole (1224) are detachably coupled.

3. The base according to claim 1, characterized in that, The first support beam (1221) has a second limiting hole (1225) at its top, and a notch (1226) at its top. The second support beam (1222) has a second limiting shaft (1227) which engages with or disengages from the second limiting hole (1225) through the notch (1226).

4. The base according to any one of claims 1 to 3, characterized in that, The top of the first support beam (1221) is provided with a first assembly hole (1230).

5. The base according to any one of claims 1 to 3, characterized in that, The folding beam (122) also includes a third support beam (1228), which is rotatably connected to the end of the main beam (121). The third support beam (1228) is used to fold toward the area outside the two sets of crossbeams (120). Among them, the first support beam (1221) and the second support beam (1222) are closer to the area between the two sets of crossbeams (120) than the third support beam (1228).

6. The base according to claim 5, characterized in that, The folding beam (122) also includes a connecting beam, the two ends of which are detachably connected to the second support beam (1222) and the third support beam (1228), respectively.

7. The base according to claim 5, characterized in that, The top of the third support beam (1228) is provided with a second assembly hole (1229).

8. A vehicle axle assembly, characterized in that, include: The base as described in any one of claims 1 to 7; Two sets of track frames (210) are detachably connected to the folding beams (122) in the two sets of crossbeam groups (120).

9. The axle assembly according to claim 8, characterized in that, With the first support beam (1221), the second support beam (1222), and the main beam (121) all extending in a preset direction, the end of the second support beam (1222) away from the first support beam (1221) extends beyond the central axis of the track frame (210) in the preset direction.

10. The axle assembly according to claim 8, characterized in that, The vehicle disembarkation assembly also includes: The connecting rod (220) is provided with a first connecting hole (221), a second connecting hole (222) and a third connecting hole (223). The first connecting hole (221) and the third connecting hole (223) are respectively provided at opposite ends of the connecting rod (220). The second connecting hole (222) is provided between the first connecting hole (221) and the third connecting hole (223). The first connecting hole (221) is rotatably engaged with the main beam (121). One of the second connecting hole (222) and the third connecting hole (223) is rotatably engaged with the track frame (210).

11. A lifting device, characterized in that, include: The vehicle dismount assembly as described in any one of claims 8 to 10; The upper assembly (310) rotates with the lower assembly via a slewing bearing.

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