Base, lower vehicle assembly and hoisting equipment

Abstract

The invention relates to a base, a lower vehicle assembly and hoisting equipment, and relates to the technical field of engineering machinery, the base comprises a base body and two cross beam sets, the two cross beam sets are arranged on the two opposite sides of the base body respectively, each cross beam set comprises a main beam and a folding beam, the main beam is connected with the base body, the folding beam comprises a first supporting beam and a second supporting beam, and the first supporting beam is connected with the second supporting beam. The first branch beam is rotationally connected with the end of the main beam and used for being folded towards the area between the two cross beam sets, and the second branch beam is detachably connected with the end, away from the main beam, of the first branch beam; the length of the two corresponding first branch beams in the two cross beam sets is smaller than the minimum distance between the two cross beam sets. The base, the lower vehicle assembly and the hoisting equipment can meet the two requirements that interference does not occur in the folding process of the cross beam set and the overall operation stability of the hoisting equipment is guaranteed after the cross beam set is unfolded.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and in particular to a base, an undercarriage assembly and a lifting device. Background Art

[0002] For crawler-type lifting equipment, two sets of tracks are arranged on two sets of beams on the base. In the application process, there is generally a need to change tracks. Specifically, in the process of transporting the lifting equipment, the two sets of beams on the base need to be folded, that is, switched to a narrow track state, for easy transportation; in the normal operation of the working machinery, the two sets of beams on the base need to be unfolded, that is, switched to a wide track state. In the related art, in order to ensure the overall operating stability of the lifting equipment in the wide track state, it is necessary to make the two sets of beams longer after unfolding. However, in the process of switching to a narrow track, the two sets of beams with longer lengths are prone to interference after folding, affecting the folding efficiency; and if the length of the two sets of beams is shortened to meet the requirement of no interference after folding, the length of the two sets of beams after unfolding will be shorter, affecting the overall operating stability of the lifting equipment; that is, the related art cannot take into account both the requirements of no interference during the folding process of the beam group and the overall operating stability of the lifting equipment after unfolding. Summary of the invention

[0003] In order to solve the above technical problems, the embodiments of the present application provide a base, an undercarriage assembly and a lifting equipment, which can take into account both the requirements of no interference during the folding process of the beam group and ensuring the overall operating stability of the lifting equipment after unfolding.

[0004] In a first aspect, a base is provided, comprising:

[0005] seat body;

[0006] Two groups of cross beam groups, the two groups of cross beam groups are respectively arranged on opposite sides of the base body, each group of the cross beam groups includes a main beam and a folding beam, the main beam is connected to the base body, 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 the first support beam is used to fold toward the area between the two groups of cross beam groups, and the second support beam is detachably connected to an end of the first support beam away from the main beam;

[0007] Wherein, the lengths of the two corresponding first supporting beams in the two groups of the cross beam groups are less than the minimum distance between the two groups of the cross beam groups.

[0008] According to the first aspect of the present application, the first support beam is provided with one of a first limiting axis and a first limiting hole, and the second support beam is provided with the other of the first limiting axis and the first limiting hole, and the first limiting axis and the first limiting hole are detachably matched.

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

[0010] According to a first aspect of the present application, a first assembly hole is provided at the top of the first supporting beam.

[0011] According to the first aspect of the present application, the folding beam further comprises a third support beam, the third support beam being rotatably connected to the end of the main beam, the third support beam being used to fold toward an area outside the two groups of cross beams;

[0012] Wherein, the first support beam and the second support beam are closer to the area between the two groups of cross beams than the third support beam.

[0013] According to the first aspect of the present application, the folding beam further comprises a connecting beam, and two ends of the connecting beam are respectively and detachably connected to the second supporting beam and the third supporting beam.

[0014] According to the first aspect of the present application, a second assembly hole is provided on the top of the third supporting beam.

[0015] In a second aspect, a dismounting assembly is also provided, including:

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

[0017] Two groups of crawler frames are respectively detachably connected to the folding beams in the two groups of cross beam groups.

[0018] According to a second aspect of the present application, when the first support beam, the second support beam and the main beam all extend in a preset direction, one end of the second support beam away from the first support beam exceeds the center axis of the crawler frame in the preset direction.

[0019] According to the second aspect of the present application, the vehicle getting off assembly further includes:

[0020] A connecting rod is provided with a first connecting hole, a second connecting hole and a third connecting hole, wherein the first connecting hole and the third connecting hole are respectively arranged at opposite ends of the connecting rod, and the second connecting hole is arranged between the first connecting hole and the third connecting hole, the first connecting hole is rotatably matched with the main beam, and one of the second connecting hole and the third connecting hole is rotatably matched with the track frame.

[0021] The base, trolley assembly and lifting equipment provided in the embodiments of the present application, on the one hand, during the process of switching to the narrow track state, the second support beam is removed from the first support beam and the lengths of the corresponding two first support beams in the two groups of cross beam groups are ensured to be less than the minimum distance between the two cross beam groups, so that the two first support beams will not interfere with each other during the folding process, thereby improving the folding efficiency; on the other hand, during the process of switching to the wide track state, the first support beam is unfolded to be in the same direction as the main beam, and the second support beam is assembled at the end of the first beam away from the main beam, thereby increasing the overall length of the cross beam group, thereby ensuring the operating stability of the lifting equipment in the wide track state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0023] Figure 1 A schematic structural diagram of a lifting device provided as an exemplary embodiment of the present application.

[0024] Figure 2 A schematic structural diagram of a wide-track state of an undercarriage assembly provided by an exemplary embodiment of the present application at a first viewing angle.

[0025] Figure 3 A schematic structural diagram of the wide track state of an undercarriage assembly provided by an exemplary embodiment of the present application at a second viewing angle.

[0026] Figure 4 A schematic structural diagram of an undercarriage assembly in a narrow track state at a first viewing angle provided by an exemplary embodiment of the present application.

[0027] Figure 5 A schematic structural diagram of the narrow-track state of an off-board assembly provided by an exemplary embodiment of the present application at a second viewing angle.

[0028] Figure 6 A schematic structural diagram of a base in a narrow track state at a first viewing angle provided by an exemplary embodiment of the present application.

[0029] Figure 7 A schematic structural diagram of a narrow-track state of a base provided by an exemplary embodiment of the present application at a second viewing angle.

[0030] Figure 8 A schematic structural diagram of a base in a wide track state at a first viewing angle provided by an exemplary embodiment of the present application.

[0031] Fig. 9 A schematic structural diagram of a base in a wide-track state at a second viewing angle provided by an exemplary embodiment of the present application.

[0032] Fig.10 A schematic diagram of a structure in which one of the second supporting beams is disassembled from the first supporting beam provided in an exemplary embodiment of the present application.

[0033] Fig.11 for Figure 8 Enlarged schematic diagram at point C in the middle.

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

[0035] Fig.13 A schematic structural diagram of a connecting rod provided for an exemplary embodiment of the present application.

[0036] Figure markings: 100-base; 110-base body; 120-crossbeam group; 121-main beam; 122-folding beam; 1221-first supporting beam; 1222-second supporting beam; 1223-first limiting axis; 1224-first limiting hole; 1225-second limiting hole; 1226-notch; 1227-second limiting axis; 1228-third supporting beam; 1229-second assembly hole; 1230-first assembly hole; 200-dismounting assembly; 210-track frame; 220-connecting rod; 221-first connecting hole; 222-second connecting hole; 223-third connecting hole; 300-lifting equipment; 310-onboard assembly. DETAILED DESCRIPTION

[0037] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described here.

[0038] Figure 1 The structural diagram of the lifting equipment provided by an exemplary embodiment of the present application is shown in FIG. Figure 1 As shown, the lifting equipment 300 provided in the embodiment of the present application may include an off-vehicle assembly 200 and an on-vehicle assembly 310, and the on-vehicle assembly 310 and the off-vehicle assembly 200 are rotatably matched via a slewing bearing.

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

[0040] Figure 2 A schematic structural diagram of a wide-track state of an undercarriage assembly provided by an exemplary embodiment of the present application at a first viewing angle. Figure 3A schematic structural diagram of the wide track state of an undercarriage assembly provided by an exemplary embodiment of the present application at a second viewing angle. Figure 4 A schematic structural diagram of an undercarriage assembly in a narrow track state at a first viewing angle provided by an exemplary embodiment of the present application. Figure 5 This is a schematic structural diagram of the narrow track state of the off-car assembly provided by an exemplary embodiment of the present application at a second viewing angle. Figures 2 to 5 As shown, the lower vehicle assembly 200 provided in the embodiment of the present application may include a base 100 and two sets of track frames 210. The base 100 is rotatably connected to the upper vehicle assembly 310 via 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 part of the base 100 can be unfolded or folded, and in the wide track state of the lower assembly 200 (such as Figure 2 and Figure 3 In the state shown), part of the base 100 is unfolded, the distance between the two sets of crawler frames 210 is large, and the overall stability of the lifting equipment 300 is enhanced; in the narrow track state of the lower assembly 200 (such as Figure 4 and Figure 5 In the state shown in the figure, part of the base 100 is folded, the distance between the two sets of track frames 210 is small, the space occupied is small, the transportation standard is met, and the transfer efficiency is effectively improved. The structure of the base 100 is introduced in detail below.

[0042] Figure 6 A schematic structural diagram of a base in a narrow track state at a first viewing angle provided by an exemplary embodiment of the present application. Figure 7 A schematic structural diagram of a narrow-track state of a base provided by an exemplary embodiment of the present application at a second viewing angle. Figure 8 A schematic structural diagram of a base in a wide track state at a first viewing angle provided by an exemplary embodiment of the present application. Fig. 9 This is a schematic diagram of the structure of the wide track state of the base provided by an exemplary embodiment of the present application at a second viewing angle. Figures 6 to 9 As shown, the base 100 provided in the embodiment of the present application may include a base body 110 and two groups of cross beam groups 120. The base body 110 can be rotatably connected to the aforementioned upper vehicle assembly 310 through the aforementioned slewing bearing. The two groups of cross beam groups 120 are respectively arranged on the opposite sides of the base body 110. The two groups of cross beam groups 120 are respectively connected to the aforementioned two groups of track frames 210. Each group of cross beam groups 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 switching to narrow track or wide track requirements.

[0043] It should be noted that the folding beams 122 in the two sets of cross beams 120 are detachably connected to the two sets of track frames 210. Before folding or unfolding, the connection between the folding beam 122 and the track frame 210 can be released to ensure that the folding beam 122 is not fixed by the track frame 210, so as to facilitate the folding or unfolding of the folding beam 122; and after folding or unfolding, the folding beam 122 and the track frame 210 can be fixed to each other to ensure the connection stability between the folding beam 122 and the track frame 210.

[0044] In practical applications, the crawler frame 210 is provided with a through hole at a position corresponding to the folding beam 122, and the folding beam 122 cooperates with the through hole to limit the folding beam 122 in the Y-axis direction and the Z-axis direction (refer to Figure 2 and Figure 4 Generally, the folding beam 122 and the crawler frame 210 are fixed by a pin, and the pin is fixed along the Z-axis direction (reference Figure 2 and Figure 4 The folding beam 122 and the crawler frame 210 are inserted into the spatial rectangular coordinate system in the space.

[0045] It should be noted that the seat body 110 is a box structure formed by welding a plurality of plates, the cross-sectional dimensions of which match the cross-sectional dimensions of the slewing bearing, and the two groups of cross beams 120 are symmetrically arranged with respect to the seat body 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 be oriented toward the area between the two groups of cross beams 120 (refer to Figure 7 and Fig. 9 The second support beam 1222 is folded in the area indicated by the arrow A, and the second support beam 1221 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 into the end of the first support beam 1221 and the end of the main beam 121 along the Z-axis direction to form a pivot structure.

[0048] Fig.10 A schematic diagram of a structure in which one of the second support beams is removed from the first support beam according to an exemplary embodiment of the present application. Fig.10 When it is necessary to switch to the narrow track state, the second support beam 1222 can be removed from the first support beam 1221 along the Z-axis direction, and then the first support beam 1221 can be folded toward the area between the two groups of cross beam groups 120, shortening the overall length of the cross beam group 120 along the X-axis direction, thereby shortening the distance between the two groups of track frames 210, meeting the transportation requirements and facilitating and quickly carrying out transportation.

[0049] It should be noted that the lengths of the two corresponding first beams 1221 in the two beam groups 120 are less than the minimum distance between the two beam groups 120. In this way, after the second beam 1222 is removed from the first beam 1221, the two corresponding first beams 1221 in the two beam groups 120 will not interfere with each other when folding toward the area between the beam groups 120. Fig. 9 For example, the corresponding two first support beams 1221 in the two groups of beam groups 120 can be understood as the first support beam 1221 at the left end of one group of beam groups 120 corresponds to the first support beam 1221 at the left end of the other group of beam groups 120, and the first support beam 1221 at the right end of one group of beam groups 120 corresponds to the first support beam 1221 at the right end of the other group of beam groups 120.

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

[0051] When it is necessary to switch to the wide track state, 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, and 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 beam group 120 in the X-axis direction. On the one hand, the beam group 120 with increased length can effectively improve the overall operating stability of the lifting equipment 300; on the other hand, when lifting, the load force is transmitted from the upper vehicle assembly 310 to the base 100 through the slewing bearing, and then transmitted to the crawler frame 210 through the first support beam 1221 and the second support beam 1222, and then transmitted 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 a greater force, reducing the structural strength requirements for 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 crawler frame 210. Specifically, Figure 3 and Fig. 9 As shown, the folding beam 122 and the main beam 121 are both along the preset direction ( Figure 3 In the state where the folding beam 122 is extended in the direction of the middle X axis, the end of the folding beam 122 away from the main beam 121 (that is, the end of the second supporting beam 1222 away from the first supporting beam 1221) is extended in the preset direction ( Figure 3 X-axis direction) beyond the center axis of the crawler frame 210 (reference Figure 3The straight line indicated by the arrow E in the middle). In this way, the folding beam 122 can provide a better supporting effect on the crawler frame 210, and can effectively improve the stability of the operation of the lifting equipment 300. The base 100 and the lifting equipment 300 provided in the embodiment of the present application, on the one hand, in the process of switching to the narrow track state, by removing the second support beam 1222 from the first support beam 1221, and ensuring that the lengths of the two corresponding first support beams 1221 in the two groups of beam groups 120 are less than the minimum distance between the two beam groups 120, so that the two first support beams 1221 will not interfere with each other during the folding process, thereby improving the folding efficiency; on the other hand, in the process of switching to the wide track 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 beam group 120 is increased, thereby ensuring the operation stability of the lifting equipment 300 in the wide track state.

[0053] Fig.11 for Figure 8 The enlarged schematic diagram is shown in Figure C. Fig.11 As shown, the first supporting beam 1221 is provided with a first limiting hole 1224, and the second supporting beam 1222 is provided with a first limiting shaft 1223. The first limiting shaft 1223 and the first limiting hole 1224 are detachably matched, so as to limit and fix the first supporting beam 1221 and the second supporting beam 1222.

[0054] Specifically, combined Figure 8 and Fig.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 the 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 first limiting hole 1224 correspondingly, and the first limiting shaft 1223 and the first limiting hole 1224 may be detachably matched.

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

[0057] like Fig.11As shown, the top of the first support beam 1221 is provided with a second limiting hole 1225, the top of the second limiting hole 1225 is provided with a notch 1226, and the second support beam 1222 is provided with a second limiting shaft 1227. Specifically, in the process of assembling the second support beam 1222 with the first support beam 1221, the second limiting shaft 1227 can be inserted into the second limiting hole 1225 along the notch 1226, and 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; in the process of detaching 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 to facilitate disassembly.

[0058] Specifically, combined Figure 8 and Fig.11 The second limiting hole 1225 is opened along the Y-axis direction, and the second limiting shaft 1227 can be assembled into the second limiting hole 1225 along the Y-axis direction, and can also be assembled into the second limiting hole 1225 along the Z-axis direction through the notch 1226.

[0059] It should be noted that, in actual application, 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, 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 be removed from the second limiting hole 1225 along the Z-axis direction through the notch 1226, so that the disassembly efficiency of the second support beam 1222 can be effectively improved. In one embodiment, the tops of the first support beam 1221 and the second support beam 1222 are substantially flush, so that when the first support beam 1221 and the second support beam 1222 are deformed, it can be ensured that the first support beam 1221 and the second support beam 1222 are in contact with the track frame 210 at the same time, 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 groups of cross beam groups 120 than the third support beam 1228. That is, the first support beam 1221 and the second support beam 1222 are arranged on the inner side of the two groups of cross beam groups 120, and the third support beam 1228 is arranged on the outer side of the two groups of cross beam groups 120.

[0061] In actual application, during the process of switching to narrow track, the second support beam 1222 is disassembled from the first support beam 1221, and the first support beam 1221 faces the area between the two groups of cross beams 120 (refer to Figure 7 and Fig. 9The third beam 1228 is folded toward the area outside the two beam groups 120 (reference Figure 7 and Fig. 9 That is, the folding directions of the first support beam 1221 and the third support beam 1228 are opposite, so that 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 not easy to interfere with each other.

[0062] In the wide track state, the second support beam 1222 is assembled on the first support beam 1221, and 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 direction (refer to Fig. 9 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 crawler 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 the structural strength requirements.

[0064] In one embodiment, the folding beam 122 may further include a connecting beam, and the two ends of the connecting beam are respectively detachably connected to the second supporting beam 1222 and the third supporting beam 1228. In practical applications, in the wide track state, the second supporting beam 1222 and the third supporting beam 1228 are connected by the connecting beam, so that the connection strength between the second supporting beam 1222 and the third supporting beam 1228 can be enhanced to prevent the second supporting beam 1222 and the third supporting beam 1228 from rotating relative to the main beam 121; before switching from the wide track state to the narrow track state, the connecting beam can be disassembled first, and then the second supporting beam 1222 can be disassembled, and then the first supporting beam 1221 and the third supporting beam 1228 can be folded respectively.

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

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

[0067] In actual application, whether in the narrow track state or the wide track state, the first assembly hole 1230 and the second assembly hole 1229 can be connected to the track frame 210 through connecting parts such as pins and bolts to enhance the connection strength between the first support beam 1221, the third support beam 1228 and the track frame 210.

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

[0069] Specifically, in the narrow track 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 seat body 110, so that the lifting equipment 300 can be maintained in the narrow track state; in the middle track state, the third connecting hole 223 cooperates with the track frame 210, and the lifting equipment 300 can use the middle track state to perform related operations in specific working scenarios, and the connecting rod 220 can improve the operating stability of the lifting equipment 300 in the middle track state.

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

[0071] In one embodiment, the lifting equipment 300 may further include a telescopic oil cylinder, the cylinder body of the telescopic oil cylinder is connected to the seat body 110, and the piston rod of the telescopic oil cylinder is connected to the track frame 210. In actual application, in the process of switching from the wide track state to the narrow track state, the piston rod of the telescopic oil cylinder contracts, driving the track frame 210 to move toward the direction close to the seat body 110, and the distance between the two sets of track frames 210 is shortened; similarly, in the process of switching from the narrow track state to the wide track, the piston rod of the telescopic oil cylinder gradually extends, driving the track frame 210 to move away from the seat body 110, and the distance between the two sets of track frames 210 increases.

[0072] It should be noted that, in the process of switching from the wide track state to the narrow track state, the telescopic cylinder can be first controlled to drive the crawler frame 210 to move in a direction close to the seat body 110. After the crawler frame 210 moves, the first support beam 1221, the second support beam 1222 and the third support beam 1228 can be exposed (because in the wide track state, the first support beam 1221, the second support beam 1222 and the third support beam 1228 are located within the coverage of the crawler frame 210 to play a supporting role), so that the first support beam 1221, the second support beam 1222 and the third support beam 1228 can be easily moved. 22 and the third support beam 1228 are disassembled from the track frame 210, and then the second support beam 1222 is disassembled from the first support beam 1221, and then the first support beam 1221 and the third support beam 1228 are folded respectively (the folding process can refer to the previous introduction), and after folding, the first support beam 1221 and the third support beam 1228 can be connected to the moved track frame 210 using a pin shaft, so that the first support beam 1221, the third support beam 1228 and the track frame 210 are relatively fixed, so that the lifting equipment can remain in a narrow track state for a long time.

[0073] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0074] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0075] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

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

[0077] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A base, characterized in that: include: base(110); Two groups of cross beam groups (120), the two groups of cross beam groups (120) are respectively arranged on two opposite sides of the seat body (110), each group of the cross beam groups (120) comprises a main beam (121) and a folding beam (122), the main beam (121) is connected to the seat body (110), the folding beam (122) comprises a first supporting beam (1221) and a second supporting beam (1222), the first supporting beam (1221) is rotatably connected to the end of the main beam (121), and the first supporting beam (1221) is used to fold toward the area between the two groups of cross beam groups (120), and the second supporting beam (1222) is detachably connected to an end of the first supporting beam (1221) away from the main beam (121); Wherein, the lengths of the two corresponding first supporting beams (1221) in the two groups of the cross beam groups (120) are smaller than the minimum distance between the two cross 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 axis (1223) and a first limiting hole (1224), and the second support beam (1222) is provided with the other of the first limiting axis (1223) and the first limiting hole (1224), and the first limiting axis (1223) and the first limiting hole (1224) are detachably matched.

3. The base according to claim 1, characterized in that: A second limiting hole (1225) is provided at the top of the first supporting beam (1221), a notch (1226) is provided at the top of the second limiting hole (1225), and a second limiting shaft (1227) is provided on the second supporting beam (1222), and the second limiting shaft (1227) is engaged with or detached 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: A first assembly hole (1230) is provided at the top of the first supporting beam (1221).

5. The base according to any one of claims 1 to 3, characterized in that: The folding beam (122) further comprises a third supporting beam (1228), wherein the third supporting beam (1228) is rotatably connected to the end of the main beam (121), and the third supporting beam (1228) is used to fold toward an area outside the two groups of cross beam groups (120); Wherein, the first support beam (1221) and the second support beam (1222) are closer to the area between the two groups of cross beam groups (120) than the third support beam (1228).

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

7. The base according to claim 5, characterized in that: A second assembly hole (1229) is provided at the top of the third supporting beam (1228).

8. A vehicle disembarking assembly, characterized in that: include: A base as claimed in any one of claims 1 to 7; Two groups of crawler frames (210), the two groups of crawler frames (210) are respectively detachably connected to the folding beams (122) in the two groups of cross beam groups (120).

9. The vehicle dismounting assembly according to claim 8, characterized in that: When the first support beam (1221), the second support beam (1222) and the main beam (121) are all extended along a preset direction, one end of the second support beam (1222) away from the first support beam (1221) exceeds the central axis of the crawler frame (210) along the preset direction.

10. The vehicle getting-off assembly according to claim 8, characterized in that: The vehicle dismounting assembly further comprises: A 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 arranged at opposite ends of the connecting rod (220); the second connecting hole (222) is arranged between the first connecting hole (221) and the third connecting hole (223); the first connecting hole (221) is rotatably matched with the main beam (121); and one of the second connecting hole (222) and the third connecting hole (223) is rotatably matched with the track frame (210).

11. A lifting device, characterized in that: include: The get-off assembly according to any one of claims 8 to 10; The upper vehicle assembly (310) is rotatably matched with the lower vehicle assembly via a slewing bearing.

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