CN104174724A - Exhaust pipe bending method - Google Patents
Exhaust pipe bending method Download PDFInfo
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- CN104174724A CN104174724A CN201410400229.4A CN201410400229A CN104174724A CN 104174724 A CN104174724 A CN 104174724A CN 201410400229 A CN201410400229 A CN 201410400229A CN 104174724 A CN104174724 A CN 104174724A
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- hydraulic cylinder
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- straight pipe
- half slot
- roller
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Abstract
The invention discloses an exhaust pipe bending method. An arc top on the side, directly facing a stop dog, of an annular groove is used as a supporting point, applied force is exerted on a straight pipe fitting from two ends of a semicircular groove respectively to enable the straight pipe fitting to bend and deform; the annular groove is matched with the semicircular groove to enable the straight pipe fitting to gradually deform in a bent enclosed space; all parts of the straight pipe fitting receive force uniformly in the bent enclosed space, so that the bending part of the straight pipe fitting is prevented from local eminence, and the service life of the exhaust pipe is prolonged.
Description
Technical field
The present invention relates to tubing apparatus for bending, specifically refer to a kind of bending method of blast pipe.
Background technology
Loading machine is mainly used to shovel, loading, unloading, muck haulage and building stones one class bulk material, also can carry out slight spading operation to rock, pan soil.If change different equipments, can also complete the work of soil-shifting, lifting, handling unclassified stores.In construction of the highway, be mainly used in filling out of subgrade engineering and dig, the operation such as the gathering materials of pitch and coagulating cement borrow pit, charging.Due to it, to have operating speed fast, and mobility is good, operates the advantages such as light, therefore becomes the main machinery in restoration in earth-rock construction.
In the time that loading machine is worked, because its live load is large, therefore compared with being generally parallel to backward ground with the angle direction of car and light weight domestic automobile exhaust pipeline, and the angle of the oversize vehicle discharge ducts such as the loading machine that high-power transport vehicle and engineering are used is normally folded to ground.In the production process of blast pipe, bending for discharge duct adopts simple bend pipe equipment conventionally, by manual operation, pipe fitting is carried out to bend pipe, though these class methods are simple, but not only increase staff's working strength, on blast pipe after bend pipe, there will be obvious fine wrinkle, being pipe fitting makes local eminence because of unbalance stress, and local eminence place of pipe fitting easily produces metal fatigue, in use easily being got rid of thing by oil cylinders such as waste gas corrodes, make the exhaust emissions of loading machine not up to standard, cause environmental pollution.
Summary of the invention
The object of the present invention is to provide a kind of bending method of blast pipe, avoid blast pipe to occur metal fatigue and service life of reducing blast pipe in pipe bent position in the time of bending, when reducing labor strength, improve the quality of bend pipe.
Object of the present invention is achieved through the following technical solutions:
A kind of bending method of blast pipe, the straight pipe of blast pipe is placed on the cannelure on column, primer fluid cylinder pressure, the output of hydraulic cylinder promotes block and moves to column direction in slide slot, in the time that block contacts with column and straight pipe is clamped, roller on two walls and the bottom land of half slot contacts with straight pipe, hydraulic cylinder continues to move in slide slot, taking cannelure just the arc of the side to block push up as the strong point, the two ends of half slot apply an active force to straight pipe respectively, make straight pipe start the bending deformation that occurs, cannelure and half slot cooperatively interact, make straight pipe that deformation occur gradually in bending confined space, and straight pipe each several part in bending confined space is stressed evenly, in the time that block moves to the end of slide slot, the end face of block contacts with the travel switch on chute cell wall, travel switch is connected with the control device of hydraulic cylinder by wire, described hydraulic cylinder is piston-type hydraulic cylinder, the control device of hydraulic cylinder is oil pump, and travel switch is connected with oil pump, and control oil pump is respectively to oil-out, oil-in oiling, control the flexible of hydraulic cylinder with this, travel switch can be controlled hydraulic cylinder and quit work, wherein on described bearing support, column is installed, on described column, have cannelure, hydraulic cylinder is installed on bearing support, the output of hydraulic cylinder is connected with block, and described block is the arc top to cannelure just, on described block, have half slot, on the inwall at the two ends of half slot and bottom land, roller is installed, roller is connected with half slot by rotating shaft, also comprise slide slot, described slide slot is arranged on bearing support, and the end, two ends of slide slot is provided with travel switch, and described travel switch is connected with the control device of hydraulic cylinder by wire, and shock-damping structure is also installed in described rotating shaft.When the present invention uses, can avoid the excessive propelling of block to cause blast pipe curved transitions and cause damage, after bend pipe operation finishes, the output rollback of hydraulic cylinder, drive block to separate with column, block continues to move in slide slot, is after the travel switch contact on slide slot other end cell wall, travel switch control hydraulic cylinder quits work, and has completed the bend pipe of blast pipe.
Described shock-damping structure comprises rolling wheel support and support tube, support tube is fixed in half slot, roller is arranged on rolling wheel support by rotating shaft, bottom at rolling wheel support is provided with support bar, support bar is arranged in support tube, support bar is provided with limited block, between the cylinder end of limited block and support tube, torsionspring is installed.In the time of the straight pipe of blast pipe and two end in contact of half slot, under the progradation of hydraulic cylinder, roller on cell wall and the bottom land of half slot starts to exert pressure to straight pipe, after straight pipe generation deformation simultaneously, can apply a reaction force to half slot, be easy to cause the two ends torsional deformation of half slot, end at half slot two ends arranges support tube, between support tube and rolling wheel support, torsionspring is installed, work as roller stress, rolling wheel support compression torsionspring, the elastic force that torsionspring produces can fall most pressure buffer, alleviate the extent of damage of half slot with this, improve service life of the present invention.
The angle that the axial line of the roller on inwall and the bottom land at the two ends of described half slot becomes is 60 °.The distribution on half slot of three rollers directly affects the stressing conditions of the straight pipe of blast pipe, the angle that axial line between roller becomes is 60 °, make straight pipe in half slot, have three equally distributed stress points, in the time that block is pushed ahead, ensure the stress balance of straight pipe, avoid occurring impression on straight pipe.
Also comprise U-shaped piece, the two ends of described U-shaped piece are fixed on bearing support, have through hole at the bend of U-shaped piece, and the output of described hydraulic cylinder is connected with block through through hole.Inverted U-shaped piece can play certain guide effect to the output of hydraulic cylinder, ensures that hydraulic cylinder output and block are stable mobile in slide slot.
In described through hole, sleeve pipe is installed, between described sleeve pipe and through-hole wall, is provided with multiple springs.In the time that block contacts with straight pipe, the output of hydraulic cylinder can be subject to stress radially, make block that certain beating occur, and then cause the cannelure on block and column to misplace, affect the precision of straight pipe bend pipe, sleeve pipe is set in through hole, and the spring being positioned on sleeve pipe and through-hole wall can be eliminated radial stress, ensures hydraulic cylinder and block stable movement in the horizontal direction.
The present invention compared with prior art, has following advantage and beneficial effect:
1, the bending method of a kind of blast pipe of the present invention, taking cannelure just the arc of the side to block push up as the strong point, the two ends of half slot apply an active force to straight pipe respectively, make straight pipe start the bending deformation that occurs, cannelure and half slot cooperatively interact, and make straight pipe that deformation occur gradually in bending confined space, and straight pipe each several part in bending confined space is stressed evenly, avoid occurring local eminence in the knee of straight pipe, extend the service life of blast pipe;
2, the bending method of a kind of blast pipe of the present invention, the distribution on half slot of three rollers directly affects the stressing conditions of the straight pipe of blast pipe, the angle that axial line between roller becomes is 60 °, make straight pipe in half slot, have three equally distributed stress points, in the time that block is pushed ahead, ensure the stress balance of straight pipe, avoid occurring impression on straight pipe;
3, the bending method of a kind of blast pipe of the present invention arranges sleeve pipe in through hole, and the spring being positioned on sleeve pipe and through-hole wall can be eliminated radial stress, ensures hydraulic cylinder and block stable movement in the horizontal direction.
Brief description of the drawings
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the present invention, forms the application's a part, does not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the sectional view of block;
Fig. 3 is the structural representation of block;
Fig. 4 is the sectional view of U-shaped piece;
Mark and corresponding parts title in accompanying drawing:
1-bearing support, 2-column, 3-hydraulic cylinder, 4-cannelure, 5-block, 6-half slot, 7-slide slot, 8-travel switch, 9-U shape piece, 10-roller, 11-rolling wheel support, 12-support tube, 13-support bar, 14-limited block, 15-torsionspring, 16-rotating shaft, 17-straight pipe, 18-through hole, 19-spring, 20-sleeve pipe.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment of the present invention and explanation thereof are only for explaining the present invention, not as a limitation of the invention.
Embodiment 1
As shown in Figures 1 to 4, the bending method of a kind of blast pipe of the present invention, the straight pipe of blast pipe 17 is placed on the cannelure on column 2, primer fluid cylinder pressure 3, the output of hydraulic cylinder 3 promotes block 5 and moves to column 2 directions slide slot 7 is interior, in the time that block 5 contacts with column 2 and straight pipe 17 is clamped, roller 10 on two walls and the bottom land of half slot 6 contacts with straight pipe 17, hydraulic cylinder 3 continues in the interior movement of slide slot 7, taking cannelure just the arc of the side to block 5 push up as the strong point, the two ends of half slot 6 apply an active force to straight pipe 17 respectively, make straight pipe 17 start the bending deformation that occurs, cannelure and half slot 6 cooperatively interact, make straight pipe 17 that deformation occur gradually in bending confined space, and straight pipe 17 each several part in bending confined space is stressed evenly, avoid occurring local eminence in the knee of straight pipe 17, extend the service life of blast pipe, in the time that block 5 moves to the end of slide slot 7, the end face of block 5 contacts with the travel switch 8 on chute cell wall, travel switch 8 is connected with the control device of hydraulic cylinder 3 by wire, described hydraulic cylinder 3 is piston-type hydraulic cylinder, the control device of hydraulic cylinder 3 is oil pump, travel switch is connected with oil pump, and control oil pump is respectively to oil-out, oil-in oiling, control the flexible of hydraulic cylinder 3 with this, travel switch 8 can be controlled hydraulic cylinder 3 and quit work, and avoids the excessive propelling of block 5 to cause blast pipe curved transitions and cause damage, wherein on described bearing support 1, column 2 is installed, on described column 2, have cannelure, hydraulic cylinder 3 is installed on bearing support 1, the output of hydraulic cylinder 3 is connected with block 5, and described block 5 is the arc top to cannelure just, on described block 5, have half slot 6, on the inwall at the two ends of half slot 6 and bottom land, roller 10 is installed, roller 10 is connected with half slot 6 by rotating shaft 16, also comprise slide slot 7, described slide slot 7 is arranged on bearing support 1, and the end, two ends of slide slot 7 is provided with travel switch 8, and described travel switch 8 is connected with the control device of hydraulic cylinder 3 by wire, in described rotating shaft 16, shock-damping structure is also installed.When the present invention uses, after bend pipe operation finishes, the output rollback of hydraulic cylinder 3, drive block 5 to separate with column 2, block 5 continues to move in slide slot 7, be that after travel switch 8 contacts on slide slot 7 other end cell walls, travel switch 8 is controlled hydraulic cylinder 3 and quit work, and has completed the bend pipe of blast pipe.
Embodiment 2
As shown in figures 1 and 3, the present embodiment is on the basis of embodiment 1, described shock-damping structure comprises roller 10 supports and support tube 11, support tube 11 is fixed in half slot 6, roller 10 is arranged on roller 10 supports by rotating shaft 16, is provided with support bar 13 in the bottom of roller 10 supports, and support bar 13 is arranged in support tube 11, support bar 13 is provided with limited block 14, between the cylinder end of limited block 14 and support tube 11, torsionspring 15 is installed.In the time of the straight pipe 17 of blast pipe and two end in contact of half slot 6, under the progradation of hydraulic cylinder 3, roller 10 on cell wall and the bottom land of half slot 6 starts to exert pressure to straight pipe 17, straight pipe 17 occurs can apply a reaction force to half slot 6 after deformation simultaneously, be easy to cause the two ends torsional deformation of half slot 6, end at half slot 6 two ends arranges support tube 11, between support tube 11 and roller 10 supports, torsionspring 15 is installed, when roller 10 stressed, roller 10 support compression torsionsprings 15, the elastic force that torsionspring 15 produces can fall most pressure buffer, alleviate the extent of damage of half slot 6 with this, improve service life of the present invention.
Embodiment 3
As shown in Figure 3, the present embodiment is on the basis of embodiment 1, and the angle that the axial line of the roller 10 on inwall and the bottom land at the two ends of described half slot 6 becomes is 60 °.The distribution on half slot 6 of three rollers 10 directly affects the stressing conditions of the straight pipe 17 of blast pipe, the angle that axial line between roller 10 becomes is 60 °, make straight pipe 17 in half slot 6, have three equally distributed stress points, in the time that block 5 is pushed ahead, ensure the stress balance of straight pipe 17, avoid occurring impression on straight pipe 17.
Embodiment 4
As shown in Figures 1 to 4, the present embodiment, on the basis of embodiment 1, also comprises U-shaped piece 9, and the two ends of described U-shaped piece 9 are fixed on bearing support 1, have through hole 18 at the bend of U-shaped piece 9, and the output of described hydraulic cylinder 3 is connected with block 5 through through hole 18; In described through hole 18, sleeve pipe 20 is installed, between described sleeve pipe 20 and through hole 18 inwalls, is provided with multiple springs 19.Inverted U-shaped piece 9 can play certain guide effect to the output of hydraulic cylinder 3, ensures that hydraulic cylinder 3 outputs and block 5 are in the interior stable movement of slide slot 7;
In the time that block 5 contacts with straight pipe 17, the output of hydraulic cylinder 3 can be subject to stress radially, make block 5 that certain beating occur, and then cause block 5 and the cannelure on column 2 to misplace, affect the precision of straight pipe 17 bend pipes, at the interior sleeve pipe 20 that arranges of through hole 18, be positioned at sleeve pipe 20 and radial stress can be eliminated with the spring 19 on through hole 18 walls, ensure hydraulic cylinder 3 and block 5 stable movement in the horizontal direction.
Above-described detailed description of the invention; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. the bending method of a blast pipe, it is characterized in that: the straight pipe of blast pipe is placed on the cannelure on column, primer fluid cylinder pressure, the output of hydraulic cylinder promotes block and moves to column direction in slide slot, in the time that block contacts with column and straight pipe is clamped, roller on two walls and the bottom land of half slot contacts with straight pipe, hydraulic cylinder continues to move in slide slot, taking cannelure just the arc of the side to block push up as the strong point, the two ends of half slot apply an active force to straight pipe respectively, make straight pipe start the bending deformation that occurs, cannelure and half slot cooperatively interact, make straight pipe that deformation occur gradually in bending confined space, and straight pipe each several part in bending confined space is stressed evenly, in the time that block moves to the end of slide slot, the end face of block contacts with the travel switch on chute cell wall, travel switch is connected with the control device of hydraulic cylinder by wire, described hydraulic cylinder is piston-type hydraulic cylinder, the control device of hydraulic cylinder is oil pump, and travel switch is connected with oil pump, and control oil pump is respectively to oil-out, oil-in oiling, control the flexible of hydraulic cylinder with this, travel switch can be controlled hydraulic cylinder and quit work, column (2) is wherein installed on described bearing support (1), on described column (2), have cannelure (4), hydraulic cylinder (3) is installed on bearing support (1), the output of hydraulic cylinder (3) is connected with block (5), and described block (5) is the arc top to cannelure (4) just, on described block (5), have half slot (6), on the inwall at the two ends of half slot (6) and bottom land, roller (10) is installed, roller (10) is connected with half slot (6) by rotating shaft (16), also comprise slide slot (7), described slide slot (7) is arranged on bearing support (1), the end, two ends of slide slot (7) is provided with travel switch (8), described travel switch (8) is connected with the control device of hydraulic cylinder (3) by wire, in described rotating shaft (16), shock-damping structure is also installed.
2. the bending method of a kind of blast pipe according to claim 1, it is characterized in that: described shock-damping structure comprises rolling wheel support (11) and support tube (12), support tube (12) is fixed in half slot (6), roller (10) is arranged on rolling wheel support (11) by rotating shaft (16), be provided with support bar (13) in the bottom of rolling wheel support (11), support bar (13) is arranged in support tube (12), support bar (13) is provided with limited block (14), between the cylinder end of limited block (14) and support tube (12), torsionspring (15) is installed.
3. the bending method of a kind of blast pipe according to claim 1, is characterized in that: the angle that the axial line of the roller (10) on inwall and the bottom land at the two ends of described half slot (6) becomes is 60 °.
4. the bending method of a kind of blast pipe according to claim 1, it is characterized in that: also comprise U-shaped piece (9), the two ends of described U-shaped piece (9) are fixed on bearing support (1), have through hole (18) at the bend of U-shaped piece (9), the output of described hydraulic cylinder (3) is connected with block (5) through through hole (18).
5. the bending method of a kind of blast pipe according to claim 4, is characterized in that: sleeve pipe (20) is installed in described through hole (18), between described sleeve pipe (20) and through hole (18) inwall, is provided with multiple springs (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410400229.4A CN104174724A (en) | 2014-08-15 | 2014-08-15 | Exhaust pipe bending method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410400229.4A CN104174724A (en) | 2014-08-15 | 2014-08-15 | Exhaust pipe bending method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104174724A true CN104174724A (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410400229.4A Pending CN104174724A (en) | 2014-08-15 | 2014-08-15 | Exhaust pipe bending method |
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| Country | Link |
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| CN (1) | CN104174724A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214221A (en) * | 2017-07-04 | 2017-09-29 | 中石化石油工程技术服务有限公司 | A kind of interior bending machine and bending method |
-
2014
- 2014-08-15 CN CN201410400229.4A patent/CN104174724A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214221A (en) * | 2017-07-04 | 2017-09-29 | 中石化石油工程技术服务有限公司 | A kind of interior bending machine and bending method |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141203 |
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| WD01 | Invention patent application deemed withdrawn after publication |