CN113578981B - Method for threading steel wire rope in loop of cold rolling pickling section and special winch fixing frame - Google Patents
Method for threading steel wire rope in loop of cold rolling pickling section and special winch fixing frame Download PDFInfo
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- CN113578981B CN113578981B CN202110831328.8A CN202110831328A CN113578981B CN 113578981 B CN113578981 B CN 113578981B CN 202110831328 A CN202110831328 A CN 202110831328A CN 113578981 B CN113578981 B CN 113578981B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention relates to a threading method of a steel wire rope in a loop of a cold rolling pickling section, wherein a threading path A of the steel wire rope in the loop is used as a starting point, a G point is used as an ending point, and the steel wire rope between the A point and the G point has five turning points from the B point to the F point; when in wearing, the winch is fixed on the winch fixing frame, and the winch fixing frame is detachably and fixedly connected with the foundation pier in the loop; the loop steel wire rope is coiled at the middle position of the loop, and the winch is always fixed near the next threading point of the loop steel wire rope and moves along with the threading propulsion; the invention also provides a special winch fixing frame for the cold rolling pickling section loop steel wire rope threading method, which comprises a steel structure frame, wherein one side of the steel structure frame is provided with a fixed winch, the other side of the steel structure frame is provided with a U-shaped clamping groove, the U-shaped clamping groove is sleeved on a foundation pier in the loop, and the opening side of the U-shaped clamping groove is provided with a locking bar.
Description
Technical Field
The invention relates to a construction technology of a transport structure in a loop of a cold rolling line pickling section, in particular to a method for threading a steel wire rope in the loop of the cold rolling line pickling section and a special winch fixing frame.
Background
In the equipment installation process of the cold rolling line pickling section loop, as the three-layer loop with an inlet, an outlet and an online is of a concrete corridor type structure, the single-layer maximum length is more than 200m, the threading of a steel wire rope of a loop trolley travelling system in the loop becomes a key point and a difficult point of construction, the steel wire rope needs to be arranged back and forth in the whole course, in particular to the situation that more than 5 main transmission rope pulleys, 4 rope pulleys of a loop trolley body and 2 rope pulleys of the tail end turn to pass through narrow spaces and frequently turn 180 degrees, and the diameter specification of the steel wire rope is more than 50 mm. Lifting equipment is not arranged in the corridor, the cross section size in the corridor is limited, and other large-scale machines for construction cannot enter the corridor, so that great difficulty is brought to the threading of the steel wire rope. According to the traditional construction method, a fixed winch is used for pulling the steel wire rope at one end of the loop, and the winch position is kept motionless, so that the overall length is approximately 650m at maximum along with the increase of the laying length of the steel wire rope, the load is large, the winch and the steel wire rope of the body are easy to damage, meanwhile, more manpower is needed, usually 8-10 people, manpower penetration is frequently carried out at a plurality of turning and narrow positions, the efficiency is low, the progress is slow, and the cost is high.
Meanwhile, the hanging points of the pulleys are buckled by using the steel wire rope, the direction of the rope groove of the pulleys is not easy to control, the problems of overlarge stress and damage of the pulleys, scraping and rubbing of the steel wire rope of the winding drum and the like are easily caused, the problems need to be carefully studied, targeted innovation measures are formulated, and new tools are arranged for solving.
Disclosure of Invention
The present invention is directed to solving the above-mentioned problems, thereby providing a method of threading a wire rope in a loop that reduces damage to the wire rope and pulleys.
The invention solves the problems, and adopts the following technical scheme:
the utility model provides a cold rolling pickling section loop internal wire rope wears to establish method, the wire rope wears to establish route A point in the loop and is the starting point, and G point is the terminal point, and wire rope has five gyration points of B point, C point, D point, E point and F point between A point to G point, and the diverting pulley is installed to the gyration point, its characterized in that: the threading method of the loop steel wire rope with the path comprises the following steps:
1) Coiling the loop steel wire rope at the middle position of the loop, and locating the loop steel wire rope between the point D and the point E; pulling out one end of the loop steel wire rope, and pulling to a point D;
2) The winch is fixed on a winch fixing frame, and the winch fixing frame is fixedly connected with a foundation pier near the point C;
3) The hoisting steel wire rope is connected with the loop steel wire rope, and the end head of the loop steel wire rope is pulled from the point D to the point C through a hoisting machine;
4) Selecting a foundation pier in the extending direction from the point B to the point A, and moving and fixing a winch to the position of the foundation pier; installing a guide pulley near the point B; leading out the hoisting steel wire rope to pass through the guide pulley and the fixed pulley at the point B; directly pulling the end of the loop steel wire rope to the vicinity of the point A through a winch; the connection between the loop steel wire rope and the hoisting steel wire rope is released, and the end of the loop steel wire rope is fixed at the point A;
5) Moving the winch fixing frame to the vicinity of the E point and connecting the winch fixing frame with a foundation pier;
6) The remaining steel wire ropes of the loop steel wire rope reel are all scattered out, the other end of the loop steel wire rope is pulled out, the winding steel wire rope is connected with the end, and the end is pulled to the E point;
7) The hoisting fixing frame moves to the extending direction from the point E to the point F, a foundation pier is selected to fix a hoisting machine, and the loop steel wire rope is pulled to the point F;
8) And (3) moving the winch to a foundation pier near the G point and fixing, and pulling the loop steel wire rope to the G point for fixing.
Compared with the prior art, the invention adopting the technical scheme has the beneficial effects that:
1) The time for threading the steel wire rope of the loop trolley in the cold rolling engineering is obviously shortened, the efficiency is greatly improved, and the labor intensity and the cost of operators are reduced. 2) The hoisting machine and the hanging points of the guide pulley are both of movable structures, the hoisting machine adjusts the traction position according to the load, and the guide pulley can adaptively adjust the direction according to the stress. 3) The steel wire rope is laid in sections, so that the hoisting load is greatly reduced, the operation is safer and more stable, and the safety environment of operators is obviously improved.
Preferably, the method further comprises the following technical scheme:
and the E point is also provided with 5 large pulleys for main transmission of the loop steel wire rope, when the E point is penetrated, the hoisting steel wire rope bypasses the 5 large pulleys and is connected with the loop steel wire rope, and the end head of the loop steel wire rope is pulled from the D point through the hoisting machine and passes through the 5 large pulleys to reach the E point.
When the difference between the traction direction of the winch and the traction target point is too large, a guide pulley is arranged to adjust the traction direction of the winch steel wire rope. The diverting pulley is fixed in the loop through a pulley bracket; the pulley bracket comprises a bottom plate and a vertical plate vertically fixedly connected with the bottom plate; the bottom plate is provided with hanging point connecting holes which are movably connected with anchor bolts in the loopers; the vertical plate is provided with a pulley mounting hole, and a pulley is mounted in the pulley mounting hole.
The invention also provides a special winch fixing frame for the cold rolling pickling section loop inner steel wire rope threading method, which has the specific structure that: the steel structure frame is welded by channel steel, one side of the steel structure frame is provided with a fixed winch, the other side of the steel structure frame is provided with a U-shaped clamping groove, the U-shaped clamping groove is sleeved on a foundation pier in the loop, and the opening side of the U-shaped clamping groove is provided with a locking bar.
Preferably, the winch fixing frame further comprises the following steps:
the winch fixing frame further comprises four rollers, and the four rollers are arranged at the bottom of the steel structure frame.
The steel structure frame both sides still fixedly connected with the steel tank, the roller is placed in the steel tank.
A clamping piece is arranged between the U-shaped clamping groove and the foundation pier.
The clamping piece is a sizing block or a telescopic cylinder.
Drawings
FIG. 1 is a diagram showing the prior art of a steel wire rope threading structure in a loop;
FIG. 2 is a schematic diagram of a first step of the threading method of the present invention;
FIG. 3 is a schematic diagram of a third step of the threading method of the present invention;
FIG. 4 is a schematic diagram of a fourth step of the threading method of the present invention;
FIG. 5 is a schematic diagram of a sixth step of the threading method of the present invention;
FIG. 6 is a schematic diagram of a seventh step of the threading method of the present invention;
FIG. 7 is a schematic diagram of an eighth step of the threading method of the present invention;
FIG. 8 is a schematic view of a winch frame according to the present invention;
FIG. 9 is a diagram of an improved construction of the winch mount of the present invention;
FIG. 10 is a schematic view of a pulley bracket mounting structure;
fig. 11 is a block diagram of a pulley bracket.
In the figure: the hoisting machine comprises a hoisting machine 1, a hoisting steel wire rope 2, a guide pulley 3, a loop steel wire rope 4, a loop trolley 5, foundation bolts 6, a foundation pier 7, a hoisting fixing frame 8, a U-shaped clamping groove 81, a locking lever 82, a rolling lever 83, a steel groove 84, a pulley bracket 9, a bottom plate 91 and a vertical plate 92.
Detailed Description
The invention is further described below in connection with the following examples which are provided for the purpose of better understanding of the present invention and are, therefore, not to be construed as limiting the scope of the invention.
In the prior art, a winch is fixed in a loop corridor and cannot move back and forth or move left and right. When the steel wire rope is threaded, the winch 1 is fixed at the right end of the loop, the steel wire rope is pulled to a point B from the point A, the point B is a steering wheel, the steel wire rope rotates to a point C from the point B and extends continuously than the point C, the steel wire rope turns once from the point D, the point E and the point F in sequence, and finally the steel wire rope is threaded to a point G for fixation. The device in the prior art is basically provided with a structure for pulling the rope end of the loop steel wire rope 4 at the near end to the far end, and the pulling steel wire of the winch can be guided only by a plurality of fixed pulleys. Referring to fig. 1, the loop wire rope 4 is pulled from point a to point G, and the total length of the wire rope (D50) pulled by the winding is about 650m at the maximum. Because the hoisting position is kept still, the traction load is larger and larger along with the increase of the laying length of the steel wire rope. As shown in fig. 1, the maximum load is a section of traction from point F to point G, and this section is near the left end of the loop corridor, and since the hoist 1 is at the right end of the loop corridor, at least 4 fixed pulleys are required to achieve traction from F to G. In actual construction, the fixed pulleys are also difficult to arrange, and most fixed pulleys are required to be independently used as anchoring points for hooking the fixed pulleys. The input of manpower, materials and machinery is more. The load is large during traction, so that the hoist and the steel wire rope of the body are easy to damage. Therefore, in order to avoid damage to the hoist and the wire rope due to too large load, much labor is required to be input to bear the traction load in the wire rope threading process. In the prior art, the whole course of the path of the steel wire rope usually needs 8-10 people to match, and the steel wire rope in the loop is frequently required to be worn in a manual auxiliary manner at a plurality of turning positions and narrow positions. Because the load is large, the output of the hoisting steel wire rope is too long, the running resistance is obviously increased, the efficiency is low, the progress is slow, and the risk factors are increased.
In the design concept of the invention, the winding engine 1 is designed to be movable, the loop steel wire rope 4 is not required to be pulled in sequence, but the winding engine 1 is arranged at the middle position of the path of the loop steel wire rope 4, so that the loop steel wire rope 4 is laid from the middle to two ends at the same time.
Specifically, referring to fig. 2 to 7, according to the method for threading the steel wire rope in the loop of the cold-rolled pickling section, the threading path A of the steel wire rope in the loop is taken as a starting point, the point G is taken as an ending point, the steel wire rope between the point A and the point G has five turning points of the point B, the point C, the point D, the point E and the point F, and the turning points are provided with the turning pulleys.
The threading method of the loop steel wire rope with the path comprises the following steps:
1) Coiling the loop steel wire rope 4 to a loop middle position which is positioned between the point D and the point E; and (5) pulling out one end of the loop steel wire rope 4 to a point D.
2) The winch 1 is fixed on a winch fixing frame 8, and the winch fixing frame 8 is fixedly connected with a foundation pier 7 near the point C.
3) The hoisting wire rope 2 is connected with the loop wire rope 4, and the end head of the loop wire rope 4 is pulled from the point D to the point C through the hoist 1.
4) Selecting a foundation pier 7 in the extending direction from the point B to the point A, and moving and fixing the winch 1 to the position of the foundation pier 7; a guide pulley 3 is arranged near the point B; the hoisting steel wire rope 2 is led out and passes through the guide pulley 3 and the fixed pulley at the point B; the end head of the loop steel wire rope 4 is directly pulled to the vicinity of the point A through the winch 1; and (3) the connection between the loop steel wire rope 4 and the hoisting steel wire rope 2 is released, and the end head of the loop steel wire rope 4 is fixed at the point A.
5) The hoist mount 8 is moved to near point E and connected to the foundation pier 7.
6) The remaining steel wire rope coiled by the loop steel wire rope 4 is totally scattered out, the other end of the loop steel wire rope 4 is pulled out, the winding steel wire rope 2 is connected with the end, and the end is pulled to the E point. The E point of the invention comprises 5 large pulleys used for main transmission of the loop steel wire rope 4, when the E point is penetrated, the hoisting steel wire rope 2 bypasses the 5 large pulleys to be connected with the loop steel wire rope 4, and the end head of the loop steel wire rope 4 is pulled from the D point through the hoisting machine 1 and passes through the 5 large pulleys to reach the E point.
7) The winch fixing frame 8 moves to the extending direction from the point E to the point F, the foundation pier 7 is selected to fix the winch 1, and the loop steel wire rope 4 is pulled to the point F.
8) The hoist 1 is moved to the foundation pier 7 near the point G and fixed, and the loop wire rope 4 is pulled to the point G for fixation.
In the present invention, points C and F are fixed points on the loop wheel 5.
Preferably, in the invention, when the difference between the traction direction of the winch 1 and the traction target point is too large, the guide pulley 3 is arranged to adjust the traction direction of the winch wire rope 2.
As shown in fig. 8, in the above penetrating method, the winch fixing frame 8 is a movable winch fixing frame specially designed for the method, and comprises a steel structure frame formed by welding channel steel, wherein one side of the steel structure frame is provided with a fixed winch 1, the other side of the steel structure frame is provided with a U-shaped clamping groove 81, the U-shaped clamping groove 81 is sleeved on the foundation pier 7 in the loop, and the opening side of the U-shaped clamping groove 81 is provided with a locking lever 82.
As shown in fig. 9, the winding fixing frame 8 further includes four rollers 83, and the four rollers 83 are disposed at the bottom of the steel structure frame. When the steel structure frame needs to move, the rolling bars 83 are padded at the bottom of the steel structure frame, so that the large-load winch 1 and the winch fixing frame 8 are integrally convenient to move. After fixing the steel structure frame, the rollers 83 can be removed. Further, as shown in fig. 9, steel slots 84 are fixedly connected to both sides of the steel structure frame, and the rollers 83 are placed in the steel slots 84. The steel groove 84 serves as a receiving structure for the rollers 83, and prevents the components from being scattered on the ground at will.
A clamping piece is arranged between the U-shaped clamping groove and the foundation pier 7, and the clamping piece can be a sizing block or a telescopic cylinder.
Specifically, the steel structure frame is used for fixing one side of the winch 1 and is provided with a fixing plate, the fixing plate is provided with a bolt hole, and the winch and the fixing plate are fixed through bolts. The locking lever is fixed with bolts at two ends of the U-shaped clamping groove.
Referring to fig. 10 and 11, the present invention also provides a pulley bracket 9, which pulley bracket 9 is used for supporting a diverting pulley. The pulley bracket 95 comprises a bottom plate 91 and a vertical plate 92 vertically fixedly connected with the bottom plate 91, the bottom plate is provided with a hanging point connecting hole, and the hanging point connecting hole is movably connected with the anchor bolt 6 in the loop; the vertical plate is provided with a pulley mounting hole, and a steering pulley is arranged in the pulley mounting hole. Diverting pulleys are in particular pulleys arranged at the point of rotation of the wire rope.
The pulley bracket bottom plate 91 is in a rotatable structure mounting mode, so that the pulley is automatically adapted along with the traction direction of the steel wire rope, the direction of a rope groove of the pulley is always the same as the direction of the steel wire rope, and the problems of damage to the pulley or scratch and rubbing of the steel wire rope of a winding drum are avoided.
Compared with the prior art, the invention has the beneficial effects that:
1) In the prior art, the steel wire ropes are laid in sequence from the starting point to the finishing point, the traction stroke is long, the load is large, the bearing capacity of a winch and the steel wire ropes is exceeded, and the damage of components is easy to occur; the winch provided by the invention flexibly selects the fixed position of the winch according to the total laying length, is laid from the middle to the two ends, reduces the traction stroke by half, and greatly reduces the load.
2) In the prior art, in order to avoid overlarge load of the steel wire rope, the number of people to be put in the penetrating construction is large; the method can save at least half of manpower because the load is in the bearing capacity range of the components.
3) The invention lays on both sides simultaneously, and shortens the construction time by half.
4) The hoisting and pulley hanging points are all movable, and the steel wire ropes can be laid in sections according to the reasonable arrangement and adjustment directions of the load and the stress direction, so that the hoisting load is greatly reduced, the operation is safer and more stable, and the safety environment of operators is obviously improved.
5) The hoisting fixing frame and the pulley bracket provided by the invention are simple in material drawing, low in component cost and convenient to maintain, and are a construction tool and a construction method which are high in innovation and are specially used for threading steel wire ropes of loop trolleys in cold rolling engineering.
The construction method is simple and feasible, is favorable for shortening the construction period, improving the construction efficiency and saving the cost, is a comparatively effective construction method, greatly improves the safety of operators, runs stably, ensures the safety of equipment, is worthy of comprehensive popularization and application in the threading of the loop trolley steel wire rope in cold rolling project engineering, and is also worthy of reference under similar conditions of other project projects.
The foregoing description of the preferred embodiments of the invention is not intended to limit the scope of the claims, but rather to cover all equivalent modifications within the scope of the present invention as defined by the appended claims.
Claims (5)
1. The utility model provides a cold rolling pickling section loop internal wire rope wears to establish method, the wire rope wears to establish route A point in the loop and is the starting point, and G point is the terminal point, and wire rope has five gyration points of B point, C point, D point, E point and F point between A point to G point, and the diverting pulley is installed to the gyration point, its characterized in that: firstly, a winch (1) is fixed on a winch fixing frame (8), the winch fixing frame (8) comprises a steel structure frame formed by welding channel steel, the winch (1) is fixedly arranged on one side of the steel structure frame, a U-shaped clamping groove (81) is formed in the other side of the steel structure frame, the U-shaped clamping groove (81) can be sleeved on any loop inner foundation pier (7) in an adaptive manner, and a locking lever (82) is arranged on the opening side of the U-shaped clamping groove (81);
the threading process of the loop steel wire rope (4) of the path is as follows:
1) Coiling the loop steel wire rope (4) to the middle position of the loop, and locating the loop steel wire rope between the point D and the point E; pulling out one end of the loop steel wire rope (4) and pulling the loop steel wire rope to a point D;
2) The winch (1) is fixed on a winch fixing frame (8), and the winch fixing frame (8) is fixedly connected with a foundation pier (7) near the point C;
3) The hoisting steel wire rope (2) is connected with the loop steel wire rope (4), and the end head of the loop steel wire rope (4) is pulled from the point D to the point C through the hoist (1);
4) Selecting a foundation pier (7) in the extending direction from the point B to the point A, and moving and fixing the winch (1) to the position of the foundation pier (7); a guide pulley (3) is arranged near the point B; the hoisting steel wire rope (2) is led out and passes through the guide pulley (3) and the fixed pulley at the point B; the end head of the loop steel wire rope (4) is directly pulled to the vicinity of the point A through the winch (1); the connection between the loop steel wire rope (4) and the hoisting steel wire rope (2) is released, and the end head of the loop steel wire rope (4) is fixed at the point A;
5) Moving a winch fixing frame (8) to the vicinity of the E point and connecting the winch fixing frame with a foundation pier (7);
6) The residual steel wire rope coiled by the loop steel wire rope (4) is totally scattered, the other end of the loop steel wire rope (4) is pulled out, the winding steel wire rope (2) is connected with the end, and the end is pulled to the E point;
7) The winch fixing frame (8) moves to the extending direction from the point E to the point F, a foundation pier (7) is selected to fix the winch (1), and the loop steel wire rope (4) is pulled to the point F;
8) The windlass (1) is moved to a foundation pier (7) near the G point and fixed, and the loop steel wire rope (4) is pulled to the G point for fixation.
2. The method for threading the steel wire rope in the loop of the cold-rolled pickling section according to claim 1, wherein the method comprises the following steps of: the E point is also provided with 5 large pulleys for main transmission of the loop steel wire rope (4), when the E point is penetrated, the hoisting steel wire rope (2) bypasses the 5 large pulleys to be connected with the loop steel wire rope (4), and the end head of the loop steel wire rope (4) is pulled from the D point through the hoist (1) and passes through the 5 large pulleys to reach the E point.
3. The method for threading the steel wire rope in the loop of the cold-rolled pickling section according to claim 2, wherein the method comprises the following steps of: when the difference between the traction direction of the winch (1) and the traction target point is too large, a guide pulley (3) is arranged to adjust the traction direction of the winch steel wire rope (2).
4. A method for threading a steel wire rope in a loop of a cold-rolled pickling section according to claim 3, wherein the method comprises the following steps: the guide pulley (3) is fixed in the loop through a pulley bracket (9); the pulley bracket (9) comprises a bottom plate (91) and a vertical plate (92) vertically fixedly connected with the bottom plate (91); wherein the bottom plate (91) is provided with hanging point connecting holes which are movably connected with anchor bolts (6) in the looper; the vertical plate (92) is provided with a pulley mounting hole, and the pulley mounting hole is used for arranging the guide pulley (3).
5. The winch fixing frame special for the threading method of the steel wire rope in the loop of the cold-rolling pickling section, which is characterized in that: the steel structure frame is formed by welding channel steel, one side of the steel structure frame is provided with a fixed winch (1), the other side of the steel structure frame is provided with a U-shaped clamping groove (81), the U-shaped clamping groove (81) is sleeved on a foundation pier (7) in the loop, and the opening side of the U-shaped clamping groove (81) is provided with a locking lever (82); the winch fixing frame (8) further comprises four rolling bars (83), and the four rolling bars (83) are arranged at the bottom of the steel structure frame; the two sides of the steel structure frame are fixedly connected with steel grooves (84), and the rollers (83) are placed in the steel grooves (84); a clamping piece is arranged between the U-shaped clamping groove (81) and the foundation pier (7); the clamping piece is a sizing block or a telescopic cylinder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110831328.8A CN113578981B (en) | 2021-07-22 | 2021-07-22 | Method for threading steel wire rope in loop of cold rolling pickling section and special winch fixing frame |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110831328.8A CN113578981B (en) | 2021-07-22 | 2021-07-22 | Method for threading steel wire rope in loop of cold rolling pickling section and special winch fixing frame |
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| CN113578981B true CN113578981B (en) | 2023-06-20 |
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| JP3016830U (en) * | 1995-04-11 | 1995-10-09 | 株式会社南星 | Overhead wire collecting device with work machine |
| JP2005014037A (en) * | 2003-06-25 | 2005-01-20 | Nippon Steel Corp | Looper device |
| JP2009233698A (en) * | 2008-03-26 | 2009-10-15 | Jfe Steel Corp | Looper equipment and looper control method |
| CN204434706U (en) * | 2014-12-17 | 2015-07-01 | 中国钢研科技集团有限公司 | A kind of horizontal loop |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63174714A (en) * | 1987-01-12 | 1988-07-19 | Mitsubishi Heavy Ind Ltd | Threading device for looper fo strip steel continuous treating equipment |
| CN100440660C (en) * | 2006-12-25 | 2008-12-03 | 山东铝业工程有限公司 | Mechanical laying method for overlength large section cable |
| CN204074733U (en) * | 2014-07-21 | 2015-01-07 | 肇庆宏旺金属实业有限公司 | A kind of loop trolley turns to draw-gear |
| CN205646648U (en) * | 2016-05-19 | 2016-10-12 | 中铁十九局集团电务工程有限公司 | Cabling drafting tool and cable laying system |
| CN106424164B (en) * | 2016-11-29 | 2019-04-26 | 福建宏旺实业有限公司 | The operation method of loop system and loop system |
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2021
- 2021-07-22 CN CN202110831328.8A patent/CN113578981B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3016830U (en) * | 1995-04-11 | 1995-10-09 | 株式会社南星 | Overhead wire collecting device with work machine |
| JP2005014037A (en) * | 2003-06-25 | 2005-01-20 | Nippon Steel Corp | Looper device |
| JP2009233698A (en) * | 2008-03-26 | 2009-10-15 | Jfe Steel Corp | Looper equipment and looper control method |
| CN204434706U (en) * | 2014-12-17 | 2015-07-01 | 中国钢研科技集团有限公司 | A kind of horizontal loop |
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| CN113578981A (en) | 2021-11-02 |
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