Steel pipe ovality adjusting tool
Technical Field
The utility model belongs to the field of tower-attached pipeline construction, and particularly relates to a steel pipe ovality adjusting tool.
Background
The tower-attached pipeline generally refers to a pipeline which is attached to vertical equipment such as a tower, a container and the like and has an elevation of more than 20 meters. The tower-attached pipeline is mostly large-caliber steel pipes, the steel pipes are subjected to external force in the manufacturing or transportation process, the section shape of the steel pipes can be changed from ideal round shape to elliptical shape, and therefore ovality of the steel pipes needs to be adjusted in the construction process.
At present, when adjusting steel pipe ovality, the workman welds the stainless steel cushion with the jack bottom, and the stainless steel roof is welded on the top of crow bar, welds the top of jack and crow bar simultaneously.
However, in the use process, it is found that at least two experienced workers are needed to cooperate in the method, one worker needs to stabilize the pry bar, the stainless steel top plate is contacted with the part to be corrected of the steel pipe, and the other worker operates the jack to drive the pry bar. The mode is complex to operate, large in manpower requirement and when the crow bar is not stable, the ovality adjustment of the steel pipe is affected.
Therefore, we propose a steel pipe ovality adjusting tool to solve the above problems.
Disclosure of utility model
Aiming at the problems that when a jack and a pry bar are used for adjusting the ellipticity of a steel pipe, the operation is complex, the manpower requirement is large, and when the pry bar is poor in stability, the ellipticity adjustment of the steel pipe is affected, the utility model provides a tool for adjusting the ellipticity of the steel pipe.
The technical problem is solved by adopting the scheme that the steel pipe ovality adjusting tool comprises a driving piece, a supporting rod, a fixed disc, a guide sleeve and a long ejector rod, wherein the supporting rod is arranged in a steel pipe, two ends of the supporting rod are respectively connected with a threaded rod in a threaded manner, the optical axis end of the threaded rod is rotatably provided with a supporting block, the supporting block is contacted with the inner wall of the steel pipe, and the supporting rod is fixed in the steel pipe;
The fixed disk is welded in the middle of the stay bar, the guide sleeve is rotatably arranged at the center of the fixed disk, the long ejector rod is arranged in the guide sleeve and can slide along the guide sleeve, and the top end of the long ejector rod is provided with an ejector block;
The drive end of the driving piece is detachably connected with the bottom end of the long ejector rod, and the base of the driving piece is in contact with the inner wall of the steel pipe.
Preferably, the optical axis section of the threaded rod is provided with a plurality of rotating rods for driving the threaded rod to rotate.
Preferably, the driving member is any one of a jack, a hydraulic rod and an electric cylinder.
Preferably, the long ejector rod is formed by assembling N short ejector rods.
Preferably, one end of each short ejector rod is provided with a threaded head, and the other end of each short ejector rod is provided with a threaded hole, so that two adjacent short ejector rods are in threaded connection.
Preferably, a connecting nut is welded at the driving end of the driving piece, and the thread head of the short ejector rod of the lower section is in threaded connection with the connecting nut.
Preferably, a handle is arranged on the side surface of the short ejector rod of the lower section.
Preferably, a plurality of thread grooves are formed in the front side of the fixed disc in a surrounding mode, a connecting block is fixedly connected to the side face of the guide sleeve, a positioning bolt is arranged in a round hole formed in the connecting block, and the positioning bolt is in threaded connection with the corresponding thread groove.
Compared with the prior art, the utility model has the beneficial effects that:
1. According to the utility model, the long ejector rod is supported and guided through the guide sleeve, the cushion block is contacted with the inner wall of the steel pipe, the driving piece is stabilized, the long ejector rod and the ejector block are driven to move upwards by the driving piece through operation, then the ejector block is contacted with the part to be corrected of the steel pipe, the ellipticity of the steel pipe is adjusted, the guide sleeve can rotate, the positions of the long ejector rod and the driving piece can be quickly adjusted, the other parts to be corrected of the steel pipe are contacted, the operation difficulty is reduced, and the working efficiency is improved.
2. According to the utility model, the position of the ejector block is adjusted by rotating the long ejector rod, when the ejector block corresponds to the position to be corrected of the steel pipe, the positioning bolt is in threaded connection with the corresponding thread groove by rotating the positioning bolt, and then the rotation angles of the guide sleeve, the connecting block and the long ejector rod are fixed, so that a worker only needs to operate the driving piece, the operation difficulty is further reduced, and the adjustment precision is ensured.
Drawings
FIG. 1 is a schematic elevational view of the present utility model;
FIG. 2 is an enlarged left-hand cross-sectional view of the stay and turntable of the present utility model;
FIG. 3 is a schematic diagram showing the front cross-sectional structure of the short ejector rod of the present utility model.
In the figure, a supporting rod 1, a fixing nut 21, a threaded rod 22, a rotating rod 23, a supporting block 24, a driving piece 31, a cushion block 32, a connecting nut 33, a long ejector rod 4, a short ejector rod 41, a threaded head 42, a threaded hole 43, a handle 5, a top block 6, a fixed disc 71, a guide sleeve 72, a connecting block 73, a positioning bolt 74, a threaded groove 75 and a rotating shaft 76 are arranged.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
Referring to fig. 1-3, the present utility model provides a technical solution for a steel pipe ovality adjustment tool:
Embodiment one:
According to fig. 1-3, comprises a driving member 31, a stay bar 1, a fixed disc 71, a guide sleeve 72 and a long ejector rod 4.
The stay bar 1 is arranged inside a steel pipe, fixing nuts 21 are respectively arranged at two ends of the stay bar, threaded rods 22 are connected with the fixing nuts 21 in a threaded manner, bearings I are sleeved at the optical axis ends of the threaded rods 22, the bearings I are arranged on supporting blocks 24, the supporting blocks 24 at two sides are far away from each other by rotating the threaded rods 22 at two sides, the supporting blocks 24 are contacted with the inner wall of the steel pipe, and the stay bar 1 is fixed in the steel pipe.
The fixed disk 71 is welded in the middle of the stay bar 1, a rotating shaft 76 is fixedly arranged at the rear side of the guide sleeve 72, a second bearing is sleeved on the rotating shaft 76, and the second bearing is arranged at the center of the fixed disk 71, so that the guide sleeve 72 can rotate.
The long ejector rod 4 is arranged in the guide sleeve 72, the guide sleeve 72 can rotate to quickly adjust the position of the long ejector rod 4, contact other parts to be corrected of the steel pipe, reduce operation difficulty, improve working efficiency, the guide sleeve 72 supports and guides the long ejector rod 4, stability of the long ejector rod 4 in a sliding process is guaranteed, the long ejector rod 4 is formed by assembling N short ejector rods 41, and the specific assembling mode is that one end of each short ejector rod 41 is provided with a threaded head 42, the other end of each short ejector rod 41 is provided with a threaded hole 43, so that two adjacent short ejector rods 41 are in threaded connection, and the top end of each upper short ejector rod 41 is provided with a jacking block 6.
The driving piece 31 is any one of a jack, a hydraulic rod and an electric cylinder, the driving end of the driving piece 31 is welded with a connecting nut 33, and a threaded head 42 of the lower section short ejector rod 41 is in threaded connection with the connecting nut 33, so that the driving end of the driving piece 31 and the lower section short ejector rod 41 are detachably connected.
The base of the driving piece 31 is provided with a cushion block 32, the cushion block 32 is contacted with the inner wall of the steel pipe, the driving piece 31 drives the long ejector rod 4 and the ejector block 6 to move upwards through operating the driving piece 31, and then the ejector block 6 is contacted with the part to be corrected of the steel pipe, so that the ovality of the steel pipe is adjusted.
When the steel pipe ovality adjusting tool is specifically used, firstly, the fixed disc 71 and the steel pipe are concentrically placed, then the threaded rods 22 on two sides are rotated to enable the supporting blocks 24 on two sides to be away from each other, the supporting blocks 24 are contacted with the inner wall of the steel pipe, the supporting rod 1 is fixed in the steel pipe, finally, the top block 6 corresponds to a position to be corrected of the steel pipe, meanwhile, the cushion block 32 is contacted with the inner wall of the steel pipe, the driving piece 31 is stabilized, meanwhile, the driving piece 31 is operated to drive the long ejector rod 4 and the top block 6 to move upwards, the top block 6 is contacted with the position to be corrected of the steel pipe, and ovality of the steel pipe is adjusted.
Embodiment two:
On the basis of the first embodiment, as shown in fig. 1, a plurality of rotating rods 23 are installed on the optical axis section of the threaded rod 22 for driving the threaded rod 22 to rotate.
The side of the lower short ejector rod 41 is provided with a handle 5.
Embodiment III:
On the basis of the first embodiment, as shown in fig. 1 and 2, a plurality of thread grooves 75 are formed around the front side of the fixed disc 71, a connecting block 73 is fixedly connected to the side surface of the guide sleeve 72, a positioning bolt 74 is arranged in a round hole formed in the connecting block 73, the position of the jacking block 6 is adjusted by rotating the long jacking rod 4, when the jacking block 6 corresponds to the position to be corrected of the steel pipe, the positioning bolt 74 is in threaded connection with the corresponding thread groove 75 by rotating the positioning bolt 74, and then the rotating angles of the guide sleeve 72, the connecting block 73 and the long jacking rod 4 are fixed, so that a worker only needs to operate the driving piece 31, the operation difficulty is further reduced, and the adjustment precision is ensured.