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CN-119774471-B - Base, get-off assembly and hoisting equipment

CN119774471BCN 119774471 BCN119774471 BCN 119774471BCN-119774471-B

Abstract

The application relates to the technical field of engineering machinery, in particular to a base, a lower car assembly and lifting equipment, which comprises a base body and two groups of beam groups, wherein the two groups of beam groups are respectively arranged on two opposite sides of the base body, each group of beam groups 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, the first supporting beam is rotationally connected with the end part of the main beam, the first supporting beam is used for folding towards the area between the two groups of beam groups, the second supporting beam is detachably connected with one end of the first supporting beam, which is far away from the main beam, and the lengths of the two corresponding first supporting beams in the two groups of beam groups are smaller than the minimum distance between the two beam groups. The base, the get-off assembly and the lifting equipment can meet the two requirements that the whole operation stability of the lifting equipment is guaranteed after the beam group is folded and unfolded.

Inventors

  • SHAO JIAMING
  • MA PINGSHAN
  • CHEN FUKUAN
  • FENG BO

Assignees

  • 浙江三一装备有限公司

Dates

Publication Date
20260512
Application Date
20241231

Claims (11)

  1. 1. A base, comprising: A base (110); The two groups of cross beam groups (120), the two groups of cross beam groups (120) are respectively arranged on two opposite sides of the base body (110), each group of cross beam groups (120) comprises a main beam (121) and a folding beam (122), the main beams (121) are connected with the base body (110), the folding beams (122) comprise a first supporting beam (1221) and a second supporting beam (1222), the first supporting beam (1221) is rotationally connected with the end part of the main beams (121), the first supporting beam (1221) is used for folding towards the area between the two groups of cross beam groups (120), and the second supporting beam (1222) is detachably connected with one end, far away from the main beams (121), of the first supporting beam (1221); wherein the lengths of the corresponding two first corbels (1221) in the two beam groups (120) are smaller than the minimum distance between the two beam groups (120).
  2. 2. The base of claim 1, wherein the first corbel (1221) is provided with one of a first spacing axle (1223) and a first spacing hole (1224), the second corbel (1222) is provided with the other of the first spacing axle (1223) and the first spacing hole (1224), and the first spacing axle (1223) and the first spacing hole (1224) are detachably mated.
  3. 3. The base of claim 1, wherein a second limiting hole (1225) is formed in the top of the first supporting beam (1221), a notch (1226) is formed in the top of the second limiting hole (1225), a second limiting shaft (1227) is formed in the second supporting beam (1222), and the second limiting shaft (1227) is clamped or separated from the second limiting hole (1225) through the notch (1226).
  4. 4. A base according to any one of claims 1 to 3, characterized in that the top of the first corbel (1221) is provided with a first fitting hole (1230).
  5. 5. A foundation according to any one of claims 1-3, wherein the folding beam (122) further comprises a third corbel (1228), the third corbel (1228) being in rotational connection with an end of the main beam (121), the third corbel (1228) being intended to fold towards an area outside both sets of cross beams (120); Wherein the first (1221) and second (1222) corbels are closer to the area between the two sets of beams (120) than the third corbel (1228).
  6. 6. The base of claim 5, wherein the folding beam (122) further comprises a connection beam, two ends of which detachably connect the second and third branch beams (1222, 1228), respectively.
  7. 7. The base of claim 5, wherein the top of the third corbel (1228) is provided with a second mounting hole (1229).
  8. 8. A get-off assembly, comprising: a base as claimed in any one of claims 1 to 7; and the two groups of track frames (210) are detachably connected with the folding beams (122) in the two groups of cross beam groups (120) respectively.
  9. 9. The drop assembly of claim 8, wherein an end of the second branch beam (1222) remote from the first branch beam (1221) extends beyond a central axis of the track frame (210) in the predetermined direction in a state in which the first branch beam (1221), the second branch beam (1222), and the main beam (121) all extend in the predetermined direction.
  10. 10. The alighting assembly of claim 8, the assembly of getting off still includes its characterized in that: Connecting rod (220), be equipped with first connecting hole (221), second connecting hole (222) and third connecting hole (223), first connecting hole (221) with third connecting hole (223) are located respectively the opposite both ends of connecting rod (220), second connecting hole (222) are located between first connecting hole (221) with third connecting hole (223), first connecting hole (221) with girder (121) normal running fit, second connecting hole (222) with one of them of third connecting hole (223) with track frame (210) normal running fit.
  11. 11. A lifting apparatus, comprising: the alighting assembly of any one of claims 8-10; And the boarding assembly (310) is in rotating fit with the alighting assembly through a slewing bearing.

Description

Base, get-off assembly and hoisting equipment Technical Field The application relates to the technical field of engineering machinery, in particular to a base, a lower car assembly and lifting equipment. Background For crawler-type lifting devices, two opposite groups of tracks are arranged on two opposite groups of crossbeams of a base, and in the application process, track changing requirements generally exist. Specifically, in the process of transferring the lifting equipment, two groups of beams opposite to the base are required to be folded, namely, the two groups of beams are required to be switched to a narrow-gauge state, so that the transportation is convenient, and in the normal operation process of the working machine, the two groups of beams opposite to the base are required to be unfolded, namely, the two groups of beams are required to be switched to a wide-gauge state. In the related art, in order to ensure the overall operation stability of the hoisting equipment in a wide rail state, the length of the two groups of beams after being unfolded is required to be longer, but in the process of switching to a narrow rail, the two groups of beams with longer lengths are easy to interfere after being folded, so that folding efficiency is influenced, and if the length of the two groups of beams is shortened to meet the requirement that the two groups of beams do not interfere after being folded, the length of the two groups of beams after being unfolded is shorter, so that the overall operation stability of the hoisting equipment is influenced, that is, the related art cannot meet the two requirements that the two groups of beams do not interfere in the folding process and the overall operation stability of the hoisting equipment after being unfolded. Disclosure of Invention In order to solve the technical problems, the embodiment of the application provides a base, a get-off assembly and lifting equipment, which can meet the two requirements of avoiding interference in the folding process of a beam set and ensuring the overall operation stability of the lifting equipment after the beam set is unfolded. In a first aspect, a base is provided, comprising: A base; The two groups of cross beam groups are respectively arranged at two opposite sides of the base body, each cross beam group comprises a main beam and a folding beam, the main beams are connected with the base body, each folding beam comprises a first supporting beam and a second supporting beam, the first supporting beams are rotatably connected with the end parts of the main beams, the first supporting beams are used for folding towards the area between the two groups of cross beam groups, and the second supporting beams are detachably connected with one end of the first supporting beams, which is far away from the main beams; the lengths of the corresponding two first corbels in the two beam groups are smaller than the minimum distance between the two beam groups. According to the first aspect of the application, the first supporting beam is provided with one of a first limiting shaft and a first limiting hole, the second supporting beam is provided with the other one of the first limiting shaft and the first limiting hole, and the first limiting shaft and the first limiting hole are detachably matched. According to the first aspect of the application, the top of the first supporting beam is provided with a second limiting hole, the top of the second limiting hole is provided with a notch, the second supporting beam is provided with a second limiting shaft, and the second limiting shaft is clamped or separated from the second limiting hole through the notch. According to the first aspect of the application, the top of the first supporting beam is provided with a first assembly hole. According to a first aspect of the present application, the folding beam further comprises a third supporting beam rotatably connected to the end of the main beam, the third supporting beam being configured to fold toward an area outside the two beam groups; Wherein the first corbel and the second corbel are closer to an area between the two sets of beams than the third corbel. According to a first aspect of the present application, the folding beam further includes a connection beam, and both ends of the connection beam are detachably connected to the second and third branch beams, respectively. According to the first aspect of the application, the top of the third supporting beam is provided with a second assembly hole. In a second aspect, there is also provided a get-off assembly comprising: A base as in the previous embodiments; The two groups of crawler frames are detachably connected with the folding beams in the two groups of cross beam groups respectively. According to the second aspect of the present application, in a state in which the first corbel, the second corbel, and the main girder all extend in a predetermined direction, one end of the second co