CN114227085A - Rotary welding device for preventing middle part of tower crane base section from sagging during welding - Google Patents
Rotary welding device for preventing middle part of tower crane base section from sagging during welding Download PDFInfo
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- CN114227085A CN114227085A CN202210088266.0A CN202210088266A CN114227085A CN 114227085 A CN114227085 A CN 114227085A CN 202210088266 A CN202210088266 A CN 202210088266A CN 114227085 A CN114227085 A CN 114227085A
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- 238000003466 welding Methods 0.000 title claims abstract description 59
- 238000007665 sagging Methods 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 230000007704 transition Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 230000003068 static effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 239000000725 suspension Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Optics & Photonics (AREA)
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- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a rotary welding device for preventing the middle part of a tower crane base section from sagging during welding, which comprises the base section, a driving mechanism, a left support, a middle support, a right support and a rotating frame, wherein the left support and the right support are fixedly arranged on the left side and the right side respectively, the driving mechanism is fixedly arranged on the left support, the middle support comprises a supporting seat and a supporting rotary drum, the supporting seat is fixedly arranged at the middle position between the left support and the right support, a plurality of freely-rotating rollers are fixedly arranged on the supporting seat, the supporting rotary drum is placed on the rollers, the excircle of the supporting rotary drum can be in rolling contact with the rollers, the rotating frame penetrates through the supporting rotary drum and is radially fixed with the supporting rotary drum, the left end of the rotating frame is fixedly connected with the driving mechanism, and the right end of the rotating frame is rotatably connected with the right support. The motor is used for driving the base joint to rotate, and supporting force can be applied to the middle part of the base joint when the base joint is static and rotates, so that the middle part of the base joint is prevented from sagging and deforming, and the product quality is ensured to reach the expected quality standard.
Description
Technical Field
The invention relates to the technical field of tower crane processing, in particular to a rotary welding device for preventing the middle part of a tower crane base section from sagging during welding.
Background
When the existing tower crane base section is integrally assembled and welded, two methods are generally adopted, one is to fix the base section on a welding tool rack, welding personnel weld around the base section, the method is inconvenient to weld, especially the welding dead angle is difficult to weld, and the welding quality is not guaranteed; the other method is that the two ends of the base section are fixed on a rotary rack of the welding tool, the middle of the base section is suspended, the base section can be turned over in a rotating mode when welding personnel encounter welding dead angles in the welding process so as to be convenient for welding, but the middle of the base section is easy to droop and deform during welding due to the fact that the length of the base section reaches 7.5 meters, and therefore the product cannot reach the expected quality standard.
Disclosure of Invention
The invention aims to provide a rotary welding device for preventing the middle part of a tower crane base section from drooping when welding, which utilizes a motor to drive the base section to rotate and can apply supporting force to the middle part of the base section when the base section is static and rotates so as to solve the technical problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a rotary welding device for preventing the middle part of a tower crane base section from sagging during welding comprises a base section, and further comprises a driving mechanism, a left support, a middle support, a right support and a rotating frame, wherein the left support and the right support are divided into a left side and a right side which are fixedly arranged, the driving mechanism is fixedly arranged on the left support, the middle support comprises a support seat and a support rotary drum, the support seat is fixedly arranged at the middle position between the left support and the right support, a plurality of rollers capable of freely rotating are fixedly arranged on the support seat, the support rotary drum is arranged on the rollers, the excircle of the support rotary drum is in rolling contact with the rollers, the rotating frame penetrates through the support rotary drum and is radially fixed with the support rotary drum, the left end of the rotating frame is fixedly connected with the driving mechanism, the right end of the rotating frame is rotatably connected with the right support, the base section penetrates through the support rotary drum and is positioned in the rotating frame, and the two ends of the base section are fixedly connected with the rotating frame, the supporting rotary drum is provided with a plurality of adjustable brackets for supporting and fixing the base section.
Further, actuating mechanism includes gear motor and transition frame, the coaxial fixed connection of transition frame is in the gear motor output, the fixed bearing frame that is provided with in right side supporting top, bearing frame and gear motor are coaxial, the swivel mount includes left frame, right frame and four connecting rods, the connecting rod both ends respectively with the bight fixed connection of left frame, right frame and form an integral framework, left frame and the coaxial fixed connection of transition frame, right frame is connected through round pin axle and the coaxial rotation of bearing frame.
Furthermore, the left side frame is provided with the left connecting block that is used for being connected with the base section left end, the right side frame is provided with the right connecting block that is used for being connected with the base section right-hand member.
Furthermore, the supporting seat comprises a bottom plate, side plates and supporting plates, the side plates are fixedly connected to two sides of the bottom plate, the supporting plates are located on the other two sides of the bottom plate, two ends of each supporting plate are fixedly connected with the side plates, the upper end of each supporting plate is provided with an arc surface of which the diameter is slightly larger than that of the supporting rotary drum, and the supporting plates are provided with a plurality of kidney-shaped grooves for mounting the rollers along the arc surfaces.
Further, the roller comprises a roller shaft and a roller body, two ends of the roller shaft extend out of the roller body and are rotatably connected with the roller body through bearings, two ends of the roller shaft are placed in the kidney-shaped grooves, two ends of the roller shaft are provided with clamping grooves which are parallel and level to the outer side of the bearing plate, clamping plates for preventing the roller shaft from rotating are placed in the clamping grooves, and the clamping plates are fixedly connected with the bearing plate.
Furthermore, the supporting rotary drum comprises a rotary drum body, a lower fixing seat, an upper fixing seat and rotary drum loose pieces, the rotary drum body is a cylinder with a notch formed in the upper portion, the lower fixing seat is located on two sides of the lower portion in the rotary drum body and fixedly connected with the inner wall of the rotary drum body, the upper fixing seat is located on two sides of the notch of the rotary drum body and fixedly connected with the inner wall of the rotary drum body, the rotary drum loose pieces are located at the notch of the rotary drum body, two ends of each rotary drum loose piece are detachably and fixedly connected with the upper fixing seat, each rotary drum loose piece and the corresponding rotary drum body form a complete drum body, and the lower fixing seat, the upper fixing seat and the corresponding rotary drum loose pieces are detachably provided with adjustable supports for limiting and supporting the base joints.
Furthermore, the lower fixing seat and the upper fixing seat are provided with connecting rod holes for the connecting rods to pass through.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention is provided with the driving mechanism and the rotating frame, the rotating frame and the base joint can be driven to rotate simultaneously by starting the speed reducing motor, so that the base joint can be easily rotated to any position after one surface is welded, the welding work of the other surface of the base joint is facilitated, the welding dead angle is prevented, welding personnel can conveniently weld, and the welding quality is improved.
2. According to the invention, the supporting seat and the supporting rotary drum are arranged below the middle part of the rotary frame, so that the base section can be effectively supported in the middle part no matter in a static state or a rotating state, the middle part of the base section is prevented from sagging and deforming, and the product quality is ensured to reach the expected quality standard. The supporting seat is provided with a roller, the supporting rotary drum is placed on the roller, and the base section penetrates through the supporting rotary drum and is fixed on the supporting rotary drum, so that the supporting seat provides supporting force for the base section at the middle position of the base section; meanwhile, the rotating frame also penetrates through the supporting rotary drum and is radially limited with the supporting rotary drum, when the speed reduction motor drives the rotating frame and the base section to rotate, the supporting rotary drum can be driven to rotate, the supporting rotary drum is always in rolling contact with the roller in the rotating process of the supporting rotary drum, the suspension phenomenon cannot occur, and the supporting seat continuously provides supporting force for the base section.
3. The supporting rotary drum is provided with the rotary drum loose piece and the rotary drum body with the notch at the upper part, and the rotary drum loose piece and the rotary drum body form a complete drum body during welding, can roll on the rotary drum without obstruction, and is convenient for the supporting rotary drum to rotate, and the supporting seat can effectively support the supporting rotary drum and the base joint; after the welding is finished, the rotary drum loose piece can be disassembled, and the welded base section can be conveniently lifted out of the gap of the rotary drum body.
4. The invention is provided with the upper fixing seat and the lower fixing seat for limiting the base joint, and the upper fixing seat and the lower fixing seat are replaced, so that the invention is applicable to products with different specifications and has strong practicability.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 2;
FIG. 4 is a cross-sectional view taken at C-C of FIG. 2;
FIG. 5 is an enlarged view of a portion of FIG. 4 at D;
FIG. 6 is a schematic structural view of a supporting base according to a second embodiment;
in the figure: 1-left support, 2-right support, 201-bearing seat, 202-pin shaft, 3-support seat, 301-bottom plate, 302-side plate, 303-support plate, 304-arc surface, 305-kidney groove, 4-support drum, 401-drum body, 402-lower fixed seat, 403-upper fixed seat, 404-drum loose piece, 405-connecting rod hole, 5-rotating frame, 501-left frame, 502-right frame, 503-connecting rod, 504-left connecting block, 505-right connecting block, 6-driving mechanism, 601-speed reducing motor, 602-transition frame, 7-drum, 701-drum shaft, 702-drum body, 8-adjustable support, 9-clamping plate, 10-base joint and 1001-main chord.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The first embodiment is as follows:
referring to fig. 1-5, a rotary welding device for preventing the middle part of a tower crane base section from sagging during welding comprises a base section 10, a driving mechanism 6, a left support 1, a middle support, a right support 2 and a rotating frame 5, wherein the left support 1 and the right support 2 are respectively fixed on the ground at the left side and the right side, the driving mechanism 6 is fixedly arranged on the left support 1, the middle support comprises a support base 3 and a support rotary drum 4, the support base 3 is fixed on the ground and positioned at the middle position between the left support 1 and the right support 2, the support base 3 is fixedly provided with two freely rotatable rollers 7, the support rotary drum 4 is placed on the rollers 7, the excircle of the support rotary drum 4 can be in rolling contact with the rollers 7, the rotating frame 5 penetrates through the support rotary drum 4 and is radially fixed with the support rotary drum 4, the support rotary drum 4 can be driven to rotate simultaneously when the rotating frame 5 rotates, the left end of the rotating frame 5 is fixedly connected with the driving mechanism 6, the right end is connected with the right support 2 in a rotating mode, the base section 10 penetrates through the support rotary drum 4 and is located in the rotary frame 5, two ends of the base section are fixedly connected with the rotary frame 5 through bolts, the support rotary drum 4 is provided with a plurality of adjustable supports 8 used for supporting and fixing the base section 10, the middle of the base section 10 is prevented from sagging and deforming, and the driving mechanism 6 is started to drive the rotary frame 5, the support rotary drum 4 and the base section 10 to rotate around the axis simultaneously.
The driving mechanism 6 comprises a speed reducing motor 601 and a transition frame 602, the transition frame 602 is coaxially and fixedly connected to the output end of the speed reducing motor 601, a bearing seat 201 is mounted at the top end of the right support 2, the bearing seat 201 is coaxial with the speed reducing motor 601, the rotating frame 5 comprises a left frame 501, a right frame 502 and four connecting rods 503, two ends of each connecting rod 503 are fixedly connected with corners of the left frame 501 and the right frame 502 through threads respectively and form an integral framework, the left frame 501 and the transition frame 602 are coaxially and fixedly connected through bolts, the right frame 502 is coaxially and rotatably connected with the bearing seat 201 through a pin shaft 202, and when the speed reducing motor 601 is started, the transition frame 602 can be driven and the rotating frame 5 can be driven to rotate.
Wherein, the left frame 501 is provided with a left connecting block 504 connected with the left end of the base joint 10, the right frame 502 is provided with a right connecting block 505 connected with the right end of the base joint 10, and the base joint 10 is fixed in the rotating frame 5 through bolts.
The supporting seat 3 comprises a bottom plate 301, side plates 302 and supporting plates 303, the side plates 302 are welded on two sides of the bottom plate 301, the supporting plates 303 are located on the other two sides of the bottom plate 301, two ends of each supporting plate are fixedly connected with the corresponding side plate 302 through bolts, an arc surface 304 with a diameter slightly larger than that of the supporting drum 4 is milled at the upper end of each supporting plate 303, and two kidney-shaped grooves 305 for mounting the rollers 7 are formed in the two ends of each supporting plate 303 along the arc surfaces 304.
The roller 7 comprises a roller shaft 701 and a roller body 702, two ends of the roller shaft 701 extend out of the roller body 702 and are rotatably connected with the roller body 702 through bearings, two ends of the roller shaft 701 are placed in the kidney-shaped groove 305, two ends of the roller shaft 701 are provided with clamping grooves which are parallel and level to the outer side of the bearing plate 303, clamping plates 9 for preventing the roller shaft 701 from rotating are placed in the clamping grooves, and the clamping plates 9 are fixedly connected with the bearing plate 303 through bolts.
Wherein, the supporting rotary drum 4 is including changeing barrel 401, lower fixing base 402, go up fixing base 403 and rotary drum loose piece 404, the cylinder body 401 is opened jagged cylinder for upper portion, lower fixing base 402 is located changeing barrel 401 below both sides and with the welding of the internal wall of rotary drum 401, it is located changeing barrel 401 breach both sides and with the welding of the internal wall of rotary drum 401 to go up fixing base 403, rotary drum loose piece 404 is located changeing barrel 401 breach department and both ends and last fixing base 403 pass through bolt detachable fixed connection and constitute a complete barrel with changeing barrel 401, lower fixing base 402, it installs the adjustable support 8 that is used for spacing, supporting base festival 10 to go up fixing base 403 and the equal detachable of rotary drum loose piece 404.
Wherein, the lower fixing seat 402 and the upper fixing seat 403 are provided with a connecting rod hole 405 for the connecting rod 503 to pass through, so that the rotating frame 5 passes through the supporting drum 4.
The working principle of the invention is as follows:
after the left support 1, the right support 2, the supporting seat 3, the rotary cylinder body 401, the driving mechanism 6 and the rotary frame 5 are installed, before the base joint 10 is assembled and welded, four main chords 1001 of the base joint 10 penetrate through the rotary cylinder body 401 and are placed at the lower fixing seat 402 and the upper fixing seat 403 according to positions, after two ends of each main chord 1001 are fixedly connected with the rotary frame 5 through bolts, a rotary cylinder loose piece 404 is connected with the upper fixing seat 403 through bolts and forms a complete cylinder body with the rotary cylinder body 401, the four main chords 1001 are fixed on the supporting rotary cylinder 4 through the adjustable support 8, and the supporting rotary cylinder 4 is placed on the roller 7 of the supporting seat 3, so that the supporting seat 3 provides supporting force for the supporting rotary cylinder 4 and the base joint 10 at the same time, the middle of the base joint 10 is prevented from sagging and deforming in the welding process, and the product quality is ensured to reach the expected quality standard.
After the base section 10 finishes one surface in the welding process, the speed reducing motor 601 is started to drive the rotating frame 5, the base section 10 and the supporting rotary drum 4 to rotate 90 degrees at the same time, the welding work of the other surface of the base section 10 is convenient to carry out, until the four surfaces of the base section 10 are completely welded, in the rotating process, the supporting rotary drum 4 is always in rolling contact with the rotary drum 7, the suspension phenomenon cannot occur, the supporting seat 3 continuously provides supporting force for the supporting rotary drum 4 and the base section 10, and the phenomenon that the middle part of the base section 10 sags and deforms in the rotating process is prevented.
After the welding of the base joint 10 is completed, the rotary drum loose piece 404 and the adjustable support 8 are removed, and the welded base joint 10 can be lifted out from the gap above the rotary drum body 401 by using a lifting appliance.
Example two:
the embodiment is basically the same as the first embodiment, except that the supporting plate 303 is provided with three kidney-shaped grooves 305 along the arc surface 304 for mounting the rollers 7, as shown in fig. 6, the three kidney-shaped grooves are respectively located at two ends and at the bottom of the arc surface 304, the supporting seat 3 is fixedly provided with three freely rotatable rollers 7, the bearing capacity of the supporting drum 4 and the base joint 10 is further enhanced, and the reliability of the device is ensured.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a flagging spin welding device in middle part when preventing tower crane base section welding, includes base section (10), its characterized in that: the device is characterized by further comprising a driving mechanism (6), a left support (1), a middle support, a right support (2) and a rotating frame (5), wherein the left support (1) and the right support (2) are fixedly arranged on the left side and the right side, the driving mechanism (6) is fixedly arranged on the left support (1), the middle support comprises a supporting seat (3) and a supporting rotary drum (4), the supporting seat (3) is fixedly arranged at the middle position between the left support (1) and the right support (2), the supporting seat (3) is fixedly provided with a plurality of freely-rotatable rollers (7), the supporting rotary drum (4) is placed on the rollers (7), the excircle of the supporting rotary drum (4) can be in rolling contact with the rollers (7), the rotating frame (5) penetrates through the supporting rotary drum (4) and is radially fixed with the supporting rotary drum (4), and the left end of the rotating frame (5) is fixedly connected with the driving mechanism (6), the right end of the supporting rotary drum is rotatably connected with the right support (2), the base joint (10) penetrates through the supporting rotary drum (4) and is positioned in the rotary frame (5), two ends of the supporting rotary drum are fixedly connected with the rotary frame (5), and a plurality of adjustable supports (8) used for supporting and fixing the base joint (10) are mounted on the supporting rotary drum (4).
2. The spin welding device of claim 1, wherein the spin welding device is configured to prevent the tower crane base section from sagging during welding, and is characterized in that: actuating mechanism (6) are including gear motor (601) and transition frame (602), transition frame (602) coaxial fixed connection is in gear motor (601) output, the fixed bearing frame (201) that is provided with in right side support (2) top, bearing frame (201) and gear motor (601) are coaxial, swivel mount (5) are including left frame (501), right frame (502) and four coupling bars (503), coupling bar (503) both ends respectively with the bight fixed connection of left frame (501), right frame (502) and form into a whole framework, left side frame (501) and transition frame (602) coaxial fixed connection, right frame (502) are connected through round pin axle (202) and bearing frame (201) coaxial rotation.
3. The spin welding device of claim 2, wherein the middle part of the spin welding device is prevented from sagging during welding of the tower crane base section, and the spin welding device is characterized in that: the left frame (501) is provided with a left connecting block (504) connected with the left end of the base section (10), and the right frame (502) is provided with a right connecting block (505) connected with the right end of the base section (10).
4. The spin welding device of claim 1, wherein the spin welding device is configured to prevent the tower crane base section from sagging during welding, and is characterized in that: the supporting seat (3) comprises a bottom plate (301), side plates (302) and supporting plates (303), the side plates (302) are fixedly connected to two sides of the bottom plate (301), the supporting plates (303) are located on the other two sides of the bottom plate (301), two ends of each supporting plate are fixedly connected with the side plates (302), an arc surface (304) with the diameter slightly larger than that of the supporting rotary drum (4) is arranged at the upper end of each supporting plate (303), and a plurality of kidney-shaped grooves (305) used for installing the rotary drums (7) are formed in the supporting plates (303) along the arc surfaces (304).
5. The spin welding device of claim 4, wherein the middle part of the spin welding device is prevented from sagging during welding of the tower crane base section, and the spin welding device is characterized in that: the roller (7) comprises a roller shaft (701) and a roller body (702), two ends of the roller shaft (701) extend out of the roller body (702) and are rotatably connected with the roller body (702) through bearings, two ends of the roller shaft (701) are placed in the kidney-shaped grooves (305), clamping grooves which are parallel and level with the outer side of the bearing plate (303) are formed in two ends of the roller shaft (701), clamping plates (9) for preventing the roller shaft (701) from rotating are placed in the clamping grooves, and the clamping plates (9) are fixedly connected with the bearing plate (303).
6. The spin welding device of claim 1, wherein the spin welding device is configured to prevent the tower crane base section from sagging during welding, and is characterized in that: the supporting rotary drum (4) comprises a rotary drum body (401), a lower fixing seat (402), an upper fixing seat (403) and rotary drum movable blocks (404), the rotary drum body (401) is a cylindrical body with a notch at the upper part, the lower fixing seat (402) is positioned on two sides of the inner lower part of the rotary drum body (401) and fixedly connected with the inner wall of the rotary drum body (401), the upper fixing seat (403) is positioned on two sides of the notch of the rotary drum body (401) and fixedly connected with the inner wall of the rotary drum body (401), the rotary drum movable blocks (404) are positioned on the notch of the rotary drum body (401), two ends of the rotary drum movable blocks are detachably and fixedly connected with the upper fixing seat (403) and form a complete drum body with the rotary drum body (401), and the lower fixing seat (402), the upper fixing seat (403) and the rotary drum movable blocks (404) are detachably provided with adjustable supports (8) for limiting and supporting the base joints (10).
7. The spin welding device of claim 6, wherein the middle part of the spin welding device is prevented from sagging during welding of the tower crane base section, and the spin welding device is characterized in that: the lower fixing seat (402) and the upper fixing seat (403) are provided with a connecting rod hole (405) for a connecting rod (503) to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210088266.0A CN114227085A (en) | 2022-01-25 | 2022-01-25 | Rotary welding device for preventing middle part of tower crane base section from sagging during welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210088266.0A CN114227085A (en) | 2022-01-25 | 2022-01-25 | Rotary welding device for preventing middle part of tower crane base section from sagging during welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114227085A true CN114227085A (en) | 2022-03-25 |
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ID=80747247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210088266.0A Pending CN114227085A (en) | 2022-01-25 | 2022-01-25 | Rotary welding device for preventing middle part of tower crane base section from sagging during welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114227085A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11347868A (en) * | 1998-06-03 | 1999-12-21 | Komatsu Engineering Kk | One-shaft-rotation type positioning device |
| CN201906953U (en) * | 2010-12-17 | 2011-07-27 | 河南省矿山起重机有限公司 | Girder welding forming machine of electric single-girder crane |
| CN203664947U (en) * | 2013-12-19 | 2014-06-25 | 浙江虎霸建设机械有限公司 | Tower-type cargo boom transitional joint splicing welding tool |
| CN204221249U (en) * | 2014-09-30 | 2015-03-25 | 浙江虎霸建设机械有限公司 | Column crane mast section welding device |
| CN204295168U (en) * | 2014-06-03 | 2015-04-29 | 广易通（福建）重工机械有限公司 | A kind of building hoist standard section welding fixture |
| CN207710161U (en) * | 2017-11-13 | 2018-08-10 | 浙江虎霸建设机械有限公司 | A kind of Tower crane standard section main chord welding tooling |
| CN111889944A (en) * | 2020-08-06 | 2020-11-06 | 中车唐山机车车辆有限公司 | Frame type chassis overturning tool |
| CN212634884U (en) * | 2020-07-14 | 2021-03-02 | 廊坊市新思维科技有限公司 | Pipeline welding auxiliary device |
-
2022
- 2022-01-25 CN CN202210088266.0A patent/CN114227085A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11347868A (en) * | 1998-06-03 | 1999-12-21 | Komatsu Engineering Kk | One-shaft-rotation type positioning device |
| CN201906953U (en) * | 2010-12-17 | 2011-07-27 | 河南省矿山起重机有限公司 | Girder welding forming machine of electric single-girder crane |
| CN203664947U (en) * | 2013-12-19 | 2014-06-25 | 浙江虎霸建设机械有限公司 | Tower-type cargo boom transitional joint splicing welding tool |
| CN204295168U (en) * | 2014-06-03 | 2015-04-29 | 广易通（福建）重工机械有限公司 | A kind of building hoist standard section welding fixture |
| CN204221249U (en) * | 2014-09-30 | 2015-03-25 | 浙江虎霸建设机械有限公司 | Column crane mast section welding device |
| CN207710161U (en) * | 2017-11-13 | 2018-08-10 | 浙江虎霸建设机械有限公司 | A kind of Tower crane standard section main chord welding tooling |
| CN212634884U (en) * | 2020-07-14 | 2021-03-02 | 廊坊市新思维科技有限公司 | Pipeline welding auxiliary device |
| CN111889944A (en) * | 2020-08-06 | 2020-11-06 | 中车唐山机车车辆有限公司 | Frame type chassis overturning tool |
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Application publication date: 20220325 |