CN219358460U - Tower crane arm frame joint welding and fixing device - Google Patents
Tower crane arm frame joint welding and fixing device Download PDFInfo
- Publication number
- CN219358460U CN219358460U CN202320339558.7U CN202320339558U CN219358460U CN 219358460 U CN219358460 U CN 219358460U CN 202320339558 U CN202320339558 U CN 202320339558U CN 219358460 U CN219358460 U CN 219358460U
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- 238000003466 welding Methods 0.000 title claims abstract description 39
- 125000006850 spacer group Chemical group 0.000 claims abstract description 60
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model relates to the technical field of engineering machinery, in particular to a welding and fixing device for a tower crane arm frame joint. The fixing device comprises a fixing seat, two side plates, two spacer bushes, a fixing pin shaft and a fixing nut. The two side plates are oppositely arranged in parallel and are connected with the fixed seat. The two spacers are detachably arranged on the two side plates respectively, and the positioning holes penetrating through the spacers are formed in the positioning holes of the two spacers and are coaxially arranged. The fixed pin shaft penetrates through the two positioning holes, one end of the fixed pin shaft is provided with a threaded section, and the other end of the fixed pin shaft is provided with a limiting plate which is abutted against a spacer bush. The fixed nut is in threaded connection with the threaded section of the fixed pin shaft and abuts against the other spacer bush. The utility model can be directly used for fixing the male connector and the female connector, and when the lower chord member is placed between the male connector and the female connector, the upper surfaces of the male connector, the female connector and the lower chord member can be ensured to be positioned in the same horizontal plane, the welding size and the position precision of the arm support are effectively ensured, and the working efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of engineering machinery, in particular to a welding and fixing device for a tower crane arm frame joint.
Background
The amplitude of the tower crane of different types is different, but the tower crane is formed by assembling and combining a plurality of arm frames, the arm frames are used as main components of the amplitude variation of the tower crane, and the arm frames are different in length and various in types. The tower crane with the same working amplitude can have a plurality of arm support combination modes, the assemblability among the arm supports with different lengths is very important, and strict requirements are provided for the processing precision in the production and manufacturing process.
The cantilever crane is assembled by the welding parts that many lengths are different, as shown in fig. 1-3, the cantilever crane mainly includes welding parts such as upper chord member a, lower chord member b, steel pipe c, and the male joint d1, female joint d2 are connected with respectively at the lower chord member b both ends of cantilever crane, and the pilot hole on male joint d1, the female joint d2 has certain eccentric distance L, and the pilot hole centre of a circle of male joint d1 is located female joint d 2's pilot hole centre of a circle below, and upper chord member a that different cantilever crane corresponds, lower chord member b specification are different, and the specification of male joint d1, female joint d2 is also different, but upper chord member a is unanimous to the distance H of lower chord member b top surface.
In the arm support production process, the male connector d1 and the female connector d2 are required to be welded to two ends of the lower chord member b, and the upper surfaces of the male connector d1 and the female connector d2 and the upper surface of the lower chord member b are required to be ensured to be in the same horizontal plane. At present, the male connector d1 and the female connector d2 are directly assembled and welded with the two ends of the lower chord member b on a long welding platform, and the welding mode has large occupied area, and is manually and repeatedly adjusted to enable the upper surfaces of the male connector d1 and the female connector d2 to be positioned in the same horizontal plane with the upper surface of the lower chord member b, so that time and labor are wasted.
Disclosure of Invention
Based on the above, it is necessary to directly assemble and weld the male connector and the female connector with two ends of the lower chord member on the welding platform at present, and the welding platform occupies a large area.
The utility model provides a welding and fixing device for a tower crane arm frame joint, which comprises the following components:
a fixing seat;
the two side plates are oppositely arranged in parallel and are connected with the fixed seat;
the two spacers are respectively and detachably arranged on the two side plates, positioning holes are formed in the spacers in a penetrating manner, and the positioning holes of the two spacers are coaxially arranged;
the fixed pin shaft penetrates through the two positioning holes, one end of the fixed pin shaft is provided with a threaded section, and the other end of the fixed pin shaft is provided with a limiting plate which is abutted against one spacer bush; and
and the fixing nut is in threaded connection with the threaded section of the fixing pin shaft and abuts against the other spacer bush.
In a preferred embodiment of the present utility model, the positioning hole is a circular hole, and the outer diameter of the fixed pin shaft is matched with the aperture of the positioning hole.
In a preferred embodiment of the present utility model, the fixing device further comprises;
the adjusting base plate is positioned between the two side plates and provided with a through hole, the through hole and the positioning hole are coaxially arranged, the aperture of the through hole is matched with the outer diameter of the fixed pin shaft, and the fixed pin shaft penetrates through the through hole and is in sliding fit with the adjusting base plate.
In a preferred embodiment of the present utility model, the side plate is provided with a mounting hole in a penetrating manner, and a positioning groove is concavely formed around the mounting hole on the outer side of the side plate; the spacer bush is detachably inserted in the mounting hole, a positioning plate is integrally formed at the outer edge position of one end of the spacer bush, which is positioned in the positioning groove, and the positioning plate is matched with the positioning groove.
In a preferred embodiment of the present utility model, the mounting hole is a circular hole, and a chamfer is disposed at one end of the mounting hole near the positioning slot; the outer diameter of the spacer bush is matched with the aperture of the mounting hole.
In a preferred embodiment of the present utility model, the positioning groove has a square cross section.
In a preferred embodiment of the present utility model, the central axis of the positioning hole is not coincident with the central axis of the spacer.
In a preferred embodiment of the utility model, the spacer is provided with a chamfer at the outer edge position of one end far away from the positioning plate, and the chamfer is provided with a chamfer at the two ends of the positioning hole.
In a preferred embodiment of the present utility model, the two adjacent angular positions of the positioning plate are provided with notches, and the distance between the notches and the central axis of the positioning hole is smaller than the distance between the notches and the central axis of the spacer.
In a preferred embodiment of the present utility model, the side plate is welded to the fixing base, and/or a plurality of connecting screw holes are formed in the fixing base.
Compared with the prior art, the utility model has the following beneficial effects:
the welding and fixing device for the tower crane boom joint is fixed on the welding platform through the fixing seat, can be directly used for fixing the male joint and the female joint of the boom, and can ensure that the upper surfaces of the male joint and the female joint and the upper surface of the lower chord are in the same horizontal plane by placing the lower chord between the male joint and the female joint, thereby effectively ensuring the welding size and the position precision of the boom and improving the working efficiency.
The fixing device also has strong interchangeability, the central axis of the positioning hole is not coincident with the central axis of the spacer, and the same fixing device can fix the male connector and the female connector when the positions of the positioning holes of the spacer are different.
The utility model has strong universality, and can be used for fixing the joint when the arm frames with different lengths in the same batch are welded only by adjusting the position of the fixing device on the welding platform; the welding fixture can be used for fixing the joints when the arm frames of different batches are welded only by replacing the spacer bush and the fixed pin shaft, has a wide application range, and can meet the requirement of quick production.
Drawings
FIG. 1 is a side view of a boom;
FIG. 2 is a front view of the boom;
FIG. 3 is a schematic view of the structure of the boom middle and bottom chords;
FIG. 4 is a schematic structural view of a welding fixture for a tower crane boom joint according to an embodiment of the present utility model;
FIG. 5 is a schematic view of the fixing base in FIG. 4;
FIG. 6 is a side view of the holder of FIG. 5;
FIG. 7 is a top view of the holder of FIG. 5;
FIG. 8 is a schematic view of the spacer of FIG. 4;
FIG. 9 is a side view of the spacer of FIG. 8;
fig. 10 is a schematic structural view of the fixed pin in fig. 4;
FIG. 11 is a side view of the stationary pin of FIG. 10;
FIG. 12 is a schematic diagram of the operation of the tower crane boom joint weld fixture apparatus of FIG. 4;
FIG. 13 is a side view of FIG. 12;
fig. 14 is an enlarged view at a in fig. 13.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The embodiment provides a welding and fixing device for a tower crane arm frame joint, which is mainly used for fixing a male joint d1 and a female joint d2 at two ends of a lower chord member b when the tower crane arm frame is welded. Referring to fig. 4, the fixing device of the present embodiment includes a fixing base 100, two side plates 200, two spacers 300, a fixing pin 400, a fixing nut 500, and an adjusting pad 600.
As shown in fig. 5 to 7, a plurality of connection screw holes 101 are formed in the fixing base 100, and the fixing base 100 can be fixed on the welding platform through the connection screw holes 101 and bolts. The fixing base 100 may have a square structure or other shapes.
The two side plates 200 are oppositely arranged in parallel, and the bottoms of the two side plates 200 are connected with the fixing base 100. The side plate 200 may be integrally formed with the fixing base 100, or may be welded to the fixing base 100. The side plates 200 are provided with mounting holes 201 in a penetrating manner, and the mounting holes 201 of the two side plates 200 are coaxially arranged. The outer side of the side plate 200 is concavely formed with a positioning groove 202 around the mounting hole 201. The mounting hole 201 may be a circular hole, or may be a hole with another shape, and the positioning groove 202 may be a square groove or a groove with another shape, and in this embodiment, the mounting hole 201 adopts a circular hole structure, and the positioning groove 202 adopts a rectangular groove.
Two spacer bushes 300 are detachably inserted into the mounting holes 202 of the two side plates 200, and the outer diameter of each spacer bush 300 is matched with the aperture of the mounting hole 201. Referring to fig. 8 and 9, positioning holes 301 are formed in the spacer 300, and the positioning holes 301 of the two spacers 300 are coaxially arranged. The positioning hole 301 is a circular hole, the aperture of the positioning hole 301 is matched with the diameters of the assembly holes of the male connector d1 and the female connector d2 of the arm support, and the position of the positioning hole 301 of the spacer 300 is reasonably set according to the positions of the assembly holes of the male connector d1 and the female connector d2. The spacer 300 is provided with a positioning plate 302 integrally formed at the outer edge position of one end close to the positioning groove 202, the positioning plate 302 is rectangular, and the shape of the positioning plate 302 is matched with that of the positioning groove 202, so that the positioning plate 302 can be just embedded in the positioning groove 202. In this embodiment, spacer 300 may be machined from round steel. The spacer 300 may be provided with a chamfer at an outer edge of an end remote from the locating plate 302. Similarly, a chamfer may be provided on the end of the mounting hole 201 near the positioning slot 202 to facilitate insertion of the spacer 300 into the mounting hole 201.
The adjusting pad 600 is located between the two side plates 200, and the adjusting pad 600 is provided with a through hole, wherein the through hole is coaxially arranged with the two positioning holes 301, and the aperture of the through hole is equal to that of the positioning holes 301. The thickness of the adjustment shim plate 600 may be adjusted according to actual conditions. Of course, a different number of adjustment shims 600 may be matched depending on the actual situation.
The fixing pin 400 penetrates through the two positioning holes 301 and the through hole of the adjusting pad 600. The fixed pin 400 can be formed by processing round steel, and the outer diameter of the fixed pin 400 is matched with the aperture of the positioning hole 301 and the aperture of the through hole, so that the fixed pin 400 can slide relative to the spacer 300 and the adjusting pad 600. Both ends of the positioning hole 301 may be provided with chamfers, so that the fixing pin 400 is conveniently inserted into the positioning hole 301. Referring to fig. 10 and 11, a threaded section 401 is provided at one end of the fixed pin 400, and a limiting plate 402 abutting against one of the spacers 300 is provided at the other end of the fixed pin 400.
The fixing nut 500 is screwed onto the threaded section 401 of the fixing pin 400 and abuts against the other spacer 300. Thus, the two spacers 300 can be laterally fixed by the fixing pin 400 and the fixing nut 500.
When the welding and fixing device for the tower crane boom joint is used for fixing the male joint d1 and the female joint d2 of the boom directly during boom support, the male joint d1 or the female joint d2 is placed between the two side plates 200, then one end of the threaded section of the fixing pin 400 sequentially passes through the positioning hole 301 of one spacer 300, the through hole of the adjusting pad 600, the assembly hole of the male joint d1 or the female joint d2 and the positioning hole 301 of the other spacer 300, and then the fixing nut 500 is screwed on the threaded section 401 to finish transverse fixing of the male joint d1 or the female joint d2. After the male connector d1 or the female connector d2 abuts against the adjusting pad 600 and the side plates 200, the thickness of the adjusting pad 600 can be reasonably set according to the width of the male connector d1 or the female connector d2, and the male connector d1 or the female connector d2 is mainly prevented from shaking between the two side plates 200. The positioning holes 301 of the spacer 300 in this embodiment are arranged according to the assembly holes of the male connector d1 and the female connector d2, and after the male connector d1 and the female connector d2 are fixed, when the lower chord member b is placed between the male connector d1 and the female connector d2, the upper planes of the male connector d1 and the female connector d2 are already in the same horizontal plane with the upper plane of the lower chord member b, so that the welding size and the position accuracy of the arm support are effectively ensured.
In particular, since the assembly holes of the male connector d1 and the female connector d2 of some arm frames have a certain eccentric distance, in order to fix the male connector d1 and the female connector d2 by the same fixing device, in this embodiment, the central axis of the positioning hole 301 may not coincide with the central axis of the spacer 300, where the distance between the central axis of the positioning hole 301 and the central axis of the spacer 300 may be designed according to the eccentric distance L between the male connector d1 and the female connector d2 assembly hole of the lower chord member b. Meanwhile, notches are formed in two adjacent corners of the positioning plate 302, and the distance between the notches and the central axis of the positioning hole 301 is smaller than that between the notches and the central axis of the spacer 300. When the fixing device is used for fixing the male connector d1, the notch of the spacer 300 needs to be placed away from the fixing base 100. When the fixing device is used for fixing the female connector d2, the notch of the spacer 300 is required to be placed towards the fixing base 100. Thus, when the lower chord member b is placed between the male connector d1 and the female connector d2 during welding, the upper planes of the male connector d1 and the female connector d2 are already in the same horizontal plane with the upper plane of the lower chord member b, and manual adjustment is not needed.
Next, the principle of using the welding fixture for the tower crane boom joint according to the present embodiment will be described with reference to fig. 12 to 14.
The welding and fixing devices of the four tower crane boom joints are distributed on the welding platform e in a rectangular shape, the fixing seat 100 of the fixing device is fixed on the welding platform e through bolts, and the length and the width of the rectangular shape are respectively set according to the length of the lower chord member b of the boom to be welded and the distance between the two lower chord members b.
The notch of the spacer 300 of the fixing device faces the fixing seat 100, so that the central axis of the positioning hole 301 is located below the central axis of the spacer 300, the male connector d1 is placed between the two side plates 200 of the two fixing devices, and the fixing pin 400 passes through the assembly hole of the male connector d1 and fixes the male connector d1 through the fixing pin 400, the adjusting pad 600 and the fixing nut 500.
The gaps of the spacers 300 of the other two fixing devices are far away from the fixing base 100, so that the central axis of the positioning hole 301 is located above the central axis of the spacers 300, the female joint d2 is placed between the two side plates 200 of the two fixing devices, and the fixing pin shaft 400 passes through the two assembly holes of the female joint d2 and fixes the female joint d2 through the fixing pin shaft 400, the adjusting pad 600 and the fixing nut 500.
And a lower chord member b is arranged between the corresponding male connector d1 and the female connector d2, at the moment, the upper planes of the male connector d1 and the female connector d2 and the upper plane of the lower chord member b are positioned in the same horizontal plane, the male connector d1 and the female connector d2 respectively abut against two ends of the lower chord member b, and the male connector d1, the female connector d2 and the lower chord member b are welded together.
In addition, the welding and fixing device for the tower crane boom joint of the embodiment can be used for fixing the male joint d1 and the female joint d2 when different spacer bushes 300 and fixing pins 400 are replaced or the positions of the fixing seats 100 on the welding platform e are changed, so that the welding device for the tower crane boom joint is wide in application range, can meet the requirements of quick production, solves the problems that the existing boom welding tool occupies a large area and the interchangeability of the welding tool for different amplitude booms is not strong, and achieves good social benefit and economic benefit.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A tower crane boom joint welded fastening device, characterized in that the fastening device comprises:
a fixed seat (100);
the two side plates (200) are arranged in parallel and opposite, and are connected with the fixed seat (100);
the two spacers (300) are respectively and detachably arranged on the two side plates (200), positioning holes (301) are formed in the spacers (300) in a penetrating mode, and the positioning holes (301) of the two spacers (300) are coaxially arranged;
the fixed pin shaft (400) penetrates through the two positioning holes (301), one end of the fixed pin shaft (400) is provided with a threaded section (401), and the other end of the fixed pin shaft (400) is provided with a limiting plate (402) abutted against one spacer bush (300); and
and the fixed nut (500) is in threaded connection with the threaded section (401) of the fixed pin shaft and abuts against the other spacer bush (300).
2. The welding fixture of a tower crane boom joint according to claim 1, wherein the positioning hole (301) is a circular hole, and the outer diameter of the fixing pin shaft (400) is matched with the aperture of the positioning hole (301).
3. The tower crane boom joint weld fixture apparatus according to claim 2, wherein the fixture apparatus further comprises;
the adjusting base plate (600) is positioned between the two side plates (200) and provided with a through hole (601), the through hole (601) and the positioning hole (301) are coaxially arranged, the aperture of the through hole is matched with the outer diameter of the fixed pin shaft (400), and the fixed pin shaft (400) penetrates through the through hole (601) and is in sliding fit with the adjusting base plate (600).
4. The welding and fixing device for the tower crane arm frame joint according to claim 1, wherein the side plate (200) is provided with a mounting hole (201) in a penetrating manner, and a positioning groove (202) is formed around the mounting hole (201) on the outer side of the side plate (200) in a concave manner; the spacer bush (300) is detachably inserted into the mounting hole (201), a positioning plate (302) is integrally formed at the outer edge position of one end of the spacer bush (300) positioned in the positioning groove (202), and the shape of the positioning plate (302) is matched with that of the positioning groove (202).
5. The welding and fixing device for the tower crane arm joint according to claim 4, wherein the mounting hole (201) is a circular hole, a chamfer is arranged at one end of the mounting hole (201) close to the positioning groove (202), and the outer diameter of the spacer bush (300) is matched with the aperture of the mounting hole (201).
6. The tower crane boom joint weld fixture apparatus according to claim 4, wherein the positioning groove (202) has a square cross section.
7. The welding fixture of tower crane boom joints according to claim 1, wherein the central axis of the positioning hole (301) is not coincident with the central axis of the spacer (300).
8. The welding and fixing device for the tower crane arm joint according to claim 4, wherein a chamfer is arranged at the outer edge position of one end of the spacer bush (300) far away from the positioning plate (302), and chamfers are arranged at the two end positions of the positioning hole (301).
9. The welding fixture device for the tower crane arm joint according to claim 4, wherein the two adjacent angular positions of the positioning plate (302) are provided with notches, and the distance between the notches and the central axis of the positioning hole (301) is smaller than the distance between the notches and the central axis of the spacer bush (300).
10. The welding and fixing device for the tower crane arm joint according to claim 1, wherein the side plate (200) is welded with the fixing seat (100), and/or a plurality of connecting screw holes (101) are formed in the fixing seat (100) in a penetrating manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320339558.7U CN219358460U (en) | 2023-02-28 | 2023-02-28 | Tower crane arm frame joint welding and fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320339558.7U CN219358460U (en) | 2023-02-28 | 2023-02-28 | Tower crane arm frame joint welding and fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219358460U true CN219358460U (en) | 2023-07-18 |
Family
ID=87146104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320339558.7U Active CN219358460U (en) | 2023-02-28 | 2023-02-28 | Tower crane arm frame joint welding and fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219358460U (en) |
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2023
- 2023-02-28 CN CN202320339558.7U patent/CN219358460U/en active Active
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