CN215364615U - Tower crane jib loading boom lower chord connecting device - Google Patents

Tower crane jib loading boom lower chord connecting device Download PDF

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Publication number
CN215364615U
CN215364615U CN202121625860.6U CN202121625860U CN215364615U CN 215364615 U CN215364615 U CN 215364615U CN 202121625860 U CN202121625860 U CN 202121625860U CN 215364615 U CN215364615 U CN 215364615U
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crane boom
connecting plate
lower chord
boom
tower crane
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CN202121625860.6U
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Chinese (zh)
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周久香
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Manitowoc Crane Equipment China Co Ltd
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Manitowoc Crane Equipment China Co Ltd
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Abstract

The utility model discloses a tower crane boom lower chord connecting device, which comprises: the device comprises a front crane boom, a rear crane boom, a connecting mechanism and a pair of fixed limiting mechanisms; the rear crane boom is arranged on one side of the front crane boom; the connecting mechanism is arranged on one side of the rear crane boom close to the front crane boom and comprises a rear connecting plate, and one side of the rear connecting plate far away from the rear crane boom is connected with a pair of uniformly distributed positioning pins; a pair of fixed stop gear evenly distributed is in the both sides of back connecting plate, and fixed stop gear includes fastening pin axle, and one side that preceding jib loading boom is close to back connecting plate is connected with preceding connecting plate. According to the utility model, the connection mode of the lower chord of the tower crane boom is improved, the process of positioning and connecting the lower chord of the tower crane boom is simplified, the convenience of dismounting the lower chord of the tower crane boom is improved, the labor intensity of dismounting the lower chord of the tower crane boom is reduced, and the efficiency of dismounting the lower chord of the tower crane boom is improved.

Description

Tower crane jib loading boom lower chord connecting device
Technical Field
The utility model belongs to the technical field of tower crane booms, and particularly relates to a lower chord connecting device of a tower crane boom.
Background
The tower crane boom is an important component of the tower crane, is a main bearing and conveying mechanism of the tower crane, and can be divided into the following parts according to different structures: the foldable boom type crane comprises a foldable boom type crane frame, a horizontal boom type crane frame and a plurality of horizontal boom type crane frames, wherein the horizontal boom type crane frame is widely applied, a tower crane boom is mainly formed by welding a plurality of groups of section steel and a pipe, and the length of the tower crane boom is required to be adjusted through connection of a plurality of sections according to actual conditions during use.
Because the tower crane boom is the main bearing part in the tower crane use, the safety in utilization of tower crane boom is especially important, and at present, most boom segments mainly adopt the mode of round pin axle or bolt fastening to carry out fixed connection to tower crane boom lower chord member.
The existing lower chord of the tower crane boom is connected in a mode of fixing a pin shaft or a bolt, so that the positioning and connecting process of the lower chord of the tower crane boom is complex, the convenience of disassembling and assembling the lower chord of the tower crane boom is reduced, the labor intensity of disassembling and assembling the lower chord of the tower crane boom is increased, and the efficiency of disassembling and assembling the lower chord of the tower crane boom is reduced.
Therefore, in order to solve the above technical problems, a need exists for a connecting device for a lower chord of a tower crane boom.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a connecting device for a lower chord of a tower crane boom, which aims to solve the problem that the connecting process of the lower chord of the tower crane boom is complex.
In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:
a tower crane jib loading boom lower chord connecting device includes: the device comprises a front crane boom, a rear crane boom, a connecting mechanism and a pair of fixed limiting mechanisms;
the rear crane arm is arranged on one side of the front crane arm;
the connecting mechanism is arranged on one side, close to the front crane boom, of the rear crane boom and comprises a rear connecting plate, and one side, far away from the rear crane boom, of the rear connecting plate is connected with a pair of uniformly distributed positioning pins;
and the fixed limiting mechanisms are uniformly distributed on two sides of the rear connecting plate and comprise fastening pin shafts.
Furthermore, one side of the front crane jib close to the rear connecting plate is connected with a front connecting plate, so that the front crane jib and the rear crane jib can be conveniently connected and limited through the mutual matching of the front connecting plate and the positioning pin, the positioning accuracy in the connection process of the front crane jib and the rear crane jib is simplified, fixing pin holes matched with the fastening pin shafts are formed in the front connecting plate and the rear connecting plate, the fastening pin shafts can be conveniently installed and fixed through the cutting of the fixing pin holes, and the front connecting plate and the rear connecting plate can be conveniently connected in a limiting manner through the fastening pin shafts.
Furthermore, one side of the rear connecting plate, which is far away from the positioning pin, is connected with a pair of evenly distributed limiting insertion plates, so that the limiting clamping plates can be fixedly connected through the limiting insertion plates.
Further, be connected with spacing cardboard on the spacing picture peg, be convenient for play the spacing effect of support through spacing cardboard to the fastening pin axle, improved the stability of being connected preceding connecting plate and back connecting plate through the fastening pin axle, one side that spacing cardboard was kept away from to spacing picture peg is connected with the split pin, and the split pin plays spacing effect to spacing cardboard.
Further, one side that fixed stop gear kept away from the back connecting plate is dug and is had wedge waist hole, is convenient for install fixedly to the wedge through digging wedge waist hole, be equipped with the wedge in the wedge waist hole, be convenient for play fixed spacing effect to the fastening pin axle through mutually supporting of wedge and preceding connecting plate.
Further, the both sides that fastening pin axle was kept away from to the wedge all dig the anticreep pinhole, are convenient for install fixedly to the cushion pin through digging the anticreep pinhole, be equipped with the cushion pin in the anticreep pinhole, be convenient for play fixed spacing effect to the wedge through the cushion pin, the condition that the wedge breaks away from the drop appears in having reduced preceding jib loading boom use, has improved the wedge and has fixed spacing stability to fastening pin axle.
Compared with the prior art, the utility model has the following advantages:
according to the utility model, the connection mode of the lower chord of the tower crane boom is improved, the process of positioning and connecting the lower chord of the tower crane boom is simplified, the convenience of dismounting the lower chord of the tower crane boom is improved, the labor intensity of dismounting the lower chord of the tower crane boom is reduced, and the efficiency of dismounting the lower chord of the tower crane boom is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a perspective view of a lower chord connecting device of a tower crane boom in one embodiment of the utility model;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic partial structural view of a lower chord connecting device of a tower crane boom according to an embodiment of the utility model;
FIG. 4 is a perspective view of a front connection plate in an embodiment of the present invention;
FIG. 5 is a perspective view of a coupling mechanism according to an embodiment of the present invention;
FIG. 6 is a perspective view of a fixed stop mechanism according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram at B in fig. 6.
In the figure: 1. the crane comprises a front crane boom, 101, a front connecting plate, 2, a rear crane boom, 3, a connecting mechanism, 301, a rear connecting plate, 302, a positioning pin, 303, a limiting inserting plate, 304, a limiting clamping plate, 305, a cotter pin, 4, a fixed limiting mechanism, 401, a fastening pin shaft, 402, a wedge block and 403, and an elastic pin.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.
The utility model discloses a lower chord connecting device of a tower crane boom, which comprises a front boom 1, a rear boom 2, a connecting mechanism 3 and a pair of fixed limiting mechanisms 4, and is shown in figures 1-7.
Referring to fig. 1-2, a front connecting plate 101 is connected to one side of the front boom 1 close to the rear connecting plate 301, so that the front boom 1 and the rear boom 2 can be conveniently connected and limited through the mutual matching of the front connecting plate 101 and the positioning pin 302, and the positioning accuracy in the connection process of the front boom 1 and the rear boom 2 is improved.
Wherein, all chisel on preceding connecting plate 101 and the back connecting plate 301 have with fastening pin shaft 401 assorted fixed pin hole, be convenient for install fastening pin shaft 401 fixed through digging fixed pin hole to be convenient for play the effect of spacing connection to preceding connecting plate 101 and back connecting plate 301 through fastening pin shaft 401.
Referring to fig. 1, the rear boom 2 is disposed at one side of the front boom 1, so that the front boom 1 can be adjusted in conveying range by connecting the rear boom 2 with the front boom 1.
Referring to fig. 1-2, the connecting mechanism 3 is disposed on a side of the rear boom 2 close to the front boom 1, and the connecting mechanism 3 functions to connect the front boom 1 and the rear boom 2, thereby simplifying the process of connecting the front boom 1 and the rear boom 2.
Referring to fig. 1-2, the connecting mechanism 3 includes a rear connecting plate 301, which facilitates fixing and supporting the positioning pin 302 via the rear connecting plate 301, and facilitates connecting the front boom 1 and the rear boom 2 via the cooperation between the rear connecting plate 301 and the front connecting plate 101.
Alternatively, the rear connecting plate 301 and the rear boom 2 may be bolted, welded or riveted.
Preferably, the rear connecting plate 301 and the rear boom 2 are welded, so that the connecting structure has the advantages of high connecting strength and high connecting stability.
Referring to fig. 1 to 5, a pair of positioning pins 302 uniformly distributed is connected to a side of the rear connecting plate 301 away from the rear boom 2, so that the positioning pins 302 can be used for connecting and correcting the front boom 1 and the rear boom 2.
Wherein, one side of the rear connecting plate 301, which is far away from the positioning pin 302, is connected with a pair of evenly distributed limiting insertion plates 303, so that the limiting clamping plates 304 are fixedly connected through the limiting insertion plates 303.
Referring to fig. 1 to 7, the limiting insertion plate 303 is connected with a limiting clamping plate 304, so that the limiting clamping plate 304 can support and limit the fastening pin 401, and the stability of the connection between the front connecting plate 101 and the rear connecting plate 301 through the fastening pin 401 is improved.
Referring to fig. 6-7, a side of the limiting insertion plate 303 away from the limiting clamping plate 304 is connected with a split pin 305, and the split pin 305 limits the limiting clamping plate 304.
Referring to fig. 1-2, a pair of fixing and limiting mechanisms 4 are uniformly distributed on two sides of the rear connecting plate 301, so that the front connecting plate 101 and the rear connecting plate 301 can be fixed and limited by the fixing and limiting mechanisms 4.
Referring to fig. 1-2, the fixed limiting mechanism 4 includes a fastening pin 401, so that the fastening pin 401 can fix and limit the front connecting plate 101 and the rear connecting plate 301, and convenience in connecting the front boom 1 and the rear boom 2 is simplified.
Specifically, a wedge-shaped waist hole is drilled on one side of the fixed limiting mechanism 4, which is far away from the rear connecting plate 301, so that the wedge-shaped block 402 can be conveniently installed and fixed by drilling the wedge-shaped waist hole.
Referring to fig. 2, a wedge block 402 is arranged in the wedge-shaped waist hole, so that the wedge block 402 and the front connecting plate 101 are matched with each other to fix and limit the fastening pin 401.
Specifically, wedge 402 is trapezoidal setting, and when current connecting plate 101 and back connecting plate 301 thickness change, the accessible is adjusted wedge 402 and is inserted the length in the wedge waist hole and fix spacing fastening pin 401, has improved fastening pin 401's commonality.
In addition, the two sides of the wedge block 402 far away from the fastening pin shaft 401 are provided with anti-drop pin holes, and the elastic pins 403 can be conveniently installed and fixed by cutting the anti-drop pin holes.
Referring to fig. 1-2, the elastic pin 403 is disposed in the anti-drop pin hole, so that the wedge block 402 is fixed and limited by the elastic pin 403, the situation that the wedge block 402 drops off during the use of the front boom 1 is reduced, and the stability of fixing and limiting the fastening pin 401 by the wedge block 402 is improved.
During the specific use, through locating pin 302 and preceding connecting plate 101 mutually support and play the effect of location calibration to preceding jib loading boom 1 and back jib loading boom 2, can be according to the position of the spacing cardboard 304 of the length adjustment of actual binding pin axle 401 after the location is accomplished, the user accessible inserts the mode of fixing the pinhole with binding pin axle 401 and fixes spacingly preceding connecting plate 101 and back connecting plate 301, carry out spacingly to binding pin axle 401 through spacing cardboard 304, afterwards, can insert wedge 402 to the wedge waist downthehole, fix spacingly to binding pin axle 401 through wedge 402, carry out the anticreep protection to wedge 402 through the mode that inserts elastic pin 403 to the both sides of wedge 402, improved and fixed spacing stability to binding pin axle 401 through wedge 402.
According to the technical scheme, the utility model has the following beneficial effects:
according to the utility model, the connection mode of the lower chord of the tower crane boom is improved, the process of positioning and connecting the lower chord of the tower crane boom is simplified, the convenience of dismounting the lower chord of the tower crane boom is improved, the labor intensity of dismounting the lower chord of the tower crane boom is reduced, and the efficiency of dismounting the lower chord of the tower crane boom is improved.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The utility model provides a tower crane jib loading boom lower chord member connecting device which characterized in that includes:
a front boom (1);
the rear crane boom (2) is arranged on one side of the front crane boom (1);
the connecting mechanism (3) is arranged on one side, close to the front crane boom (1), of the rear crane boom (2), the connecting mechanism (3) comprises a rear connecting plate (301), and one side, far away from the rear crane boom (2), of the rear connecting plate (301) is connected with a pair of uniformly distributed positioning pins (302);
the pair of fixed limiting mechanisms (4) are uniformly distributed on two sides of the rear connecting plate (301), and each fixed limiting mechanism (4) comprises a fastening pin shaft (401).
2. The connecting device for the lower chord of the tower crane boom according to claim 1, characterized in that one side of the front crane boom (1) close to the rear connecting plate (301) is connected with a front connecting plate (101), and fixing pin holes matched with the fastening pin shafts (401) are drilled on the front connecting plate (101) and the rear connecting plate (301).
3. The connecting device for the lower chord of the tower crane boom according to claim 1, characterized in that one side of the rear connecting plate (301) far away from the positioning pin (302) is connected with a pair of evenly distributed limiting inserting plates (303).
4. The connecting device for the lower chord of the tower crane boom according to claim 3, characterized in that a limiting clamping plate (304) is connected to the limiting inserting plate (303), and a split pin (305) is connected to one side of the limiting inserting plate (303) far away from the limiting clamping plate (304).
5. The connecting device for the lower chord of the tower crane boom according to claim 1, characterized in that a wedge-shaped waist hole is drilled on one side of the fixed limiting mechanism (4) far away from the rear connecting plate (301), and a wedge block (402) is arranged in the wedge-shaped waist hole.
6. The connecting device for the lower chord of the tower crane boom according to claim 5, characterized in that two sides of the wedge-shaped block (402) far away from the fastening pin shaft (401) are provided with anti-drop pin holes, and elastic pins (403) are arranged in the anti-drop pin holes.
CN202121625860.6U 2021-07-16 2021-07-16 Tower crane jib loading boom lower chord connecting device Active CN215364615U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121625860.6U CN215364615U (en) 2021-07-16 2021-07-16 Tower crane jib loading boom lower chord connecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121625860.6U CN215364615U (en) 2021-07-16 2021-07-16 Tower crane jib loading boom lower chord connecting device

Publications (1)

Publication Number Publication Date
CN215364615U true CN215364615U (en) 2021-12-31

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CN202121625860.6U Active CN215364615U (en) 2021-07-16 2021-07-16 Tower crane jib loading boom lower chord connecting device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4299501A1 (en) * 2022-06-30 2024-01-03 WOLFFKRAN Holding AG Connecting device for connecting boom segments of a boom of a tower crane
WO2024003167A1 (en) * 2022-06-30 2024-01-04 Wolffkran Holding Ag Connection device for connecting jib segments of a jib of a tower crane
CN117529443A (en) * 2022-06-30 2024-02-06 沃尔夫控股公司 Connecting device for connecting boom sections of a tower crane boom

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4299501A1 (en) * 2022-06-30 2024-01-03 WOLFFKRAN Holding AG Connecting device for connecting boom segments of a boom of a tower crane
WO2024003167A1 (en) * 2022-06-30 2024-01-04 Wolffkran Holding Ag Connection device for connecting jib segments of a jib of a tower crane
CN117529443A (en) * 2022-06-30 2024-02-06 沃尔夫控股公司 Connecting device for connecting boom sections of a tower crane boom

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