CN112974062A - Hollow tube rolling mill with lubricant smearing function - Google Patents
Hollow tube rolling mill with lubricant smearing function Download PDFInfo
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- CN112974062A CN112974062A CN202110162217.2A CN202110162217A CN112974062A CN 112974062 A CN112974062 A CN 112974062A CN 202110162217 A CN202110162217 A CN 202110162217A CN 112974062 A CN112974062 A CN 112974062A
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- rod
- hydraulic
- rolling
- lubricant
- rolling mill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
- B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
- B05B13/0636—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies by means of rotatable spray heads or nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0207—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0245—Lubricating devices
- B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0245—Lubricating devices
- B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
- B21B2045/026—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a hollow tube rolling mill with a lubricant smearing function, which comprises a base, a rolling mill, a central rod and a rotating rod, wherein the rolling mill is fixed above the base, the central rod is positioned at the front end of the rolling mill, the central rod and the rotating rod are coaxial and are sleeved outside the rotating rod, the rear end face of the rotating rod penetrates through the rear end of the central rod and is provided with a spray head, the front end of the rotating rod is fixedly connected with an output shaft of a first motor, and the first motor is fixedly connected with the base through a fifth fixing frame below the first motor. And a lubricant supply station, a hydraulic station and an electric control cabinet are fixed on the base, the rolling mill is connected with the hydraulic station through a hydraulic pipeline, and the supply pipe is connected with the lubricant supply station through a pipeline. The first motor, the supply station and the hydraulic station are respectively and electrically connected with the electric control cabinet. The invention can automatically and uniformly paint the lubricant on the inner wall of the steel pipe before the steel pipe is fed and rolled.
Description
Technical Field
The invention belongs to the technical field of seamless steel pipe production, and particularly relates to a hollow pipe rolling mill with a lubricant smearing function.
Background
Seamless steel pipes have the advantages of high pressure resistance, good toughness, long pipe sections and few joints, and are therefore widely used as pipelines for transporting fluids, such as pipelines for transporting oil, natural gas, water and certain solid materials. Meanwhile, compared with solid steel such as round steel and the like, the steel pipe has the advantages of same bending strength and torsion strength and lighter weight, and is widely used for manufacturing structural parts and mechanical parts, such as petroleum drill pipes, automobile transmission shafts and the like.
In the existing production process of seamless steel pipes, round steel is firstly drilled, then rolling is carried out, in order to avoid the adhesion of the steel pipe and an inner rod core during rolling, the inner wall of the steel pipe needs to be manually coated with a lubricant before rolling, and manual coating easily causes uneven coating.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the hollow tube rolling mill with the lubricant smearing function can automatically and uniformly smear the lubricant to the inner wall of the steel tube before the steel tube is fed and rolled.
The technical scheme adopted by the invention for solving the problems in the prior art is as follows:
the hollow tube rolling device comprises a base, a rolling mill, a central rod and a rotating rod, wherein the rolling mill is fixed above the base.
The center rod is located at the front end of the rolling mill, the rear end face of the center rod penetrates through the center rod and is arranged at the rear end of the rolling mill, the front end face of the center rod is fixedly connected with the base through a fourth fixing frame, a sliding support plate capable of freely sliding is sleeved on the center rod, and the bottom surface of the sliding support plate is in contact with the base.
The rotating rod is coaxial with the rotating rod and sleeved outside the rotating rod, the rear end face of the rotating rod penetrates through the rear end of the rotating rod and is provided with a spray head, a lubricant passage is arranged inside the rotating rod and the spray head, the front end of the circumferential surface of the rotating rod is provided with a lubricant inlet communicated with the lubricant passage, the circumferential surface of the spray head is provided with a plurality of lubricant outlets communicated with the lubricant passage, the circumferential surface of the rotating rod is positioned on two sides of the lubricant inlet and is respectively sleeved with a first snap ring, the circumferential surface of the rotating rod is positioned between the two first snap rings and is sleeved with a sleeve, a liquid feeding cavity communicated with the lubricant inlet is arranged in the inner wall of the sleeve in a concave manner, the outer portion of the sleeve is provided with a supply pipe communicated with the liquid feeding cavity, the front end of the rotating rod is.
And a lubricant supply station, a hydraulic station and an electric control cabinet are fixed on the base, the rolling mill is connected with the hydraulic station through a hydraulic pipeline, and the supply pipe is connected with the lubricant supply station through a pipeline.
The first motor, the supply station and the hydraulic station are respectively and electrically connected with the electric control cabinet.
Preferably, a guide pipe is fixed at an inlet at the rear end of the rolling mill, and the spray head is arranged in the guide pipe.
The guide tube is arranged coaxially with the central rod.
Preferably, the guide pipe is fixedly connected with the rolling mill or the base.
Preferably, the spray head is cylindrical, the outer diameter of the spray head is smaller than the inner diameter of the steel pipe to be rolled, and a plurality of brushes are uniformly distributed on the circumferential surface of the spray head.
The rear end of the circumferential surface of the rotating rod is sleeved with a second clamping ring, and the central rod is positioned between the first clamping ring and the second clamping ring at the rear end.
Preferably, the rolling mill comprises a housing, an end cover, a rolling disc, a support device and a hydraulic motor.
The periphery of the outer side of the annularly-installed shell is convexly provided with a plurality of hydraulic barrels, the plurality of hydraulic barrels are distributed around the axis of the shell in an annular array, the periphery of the inner side of the shell is inwards provided with a plurality of sliding grooves, and the sliding grooves and the hydraulic barrels are arranged in a one-to-one opposite mode.
The hydraulic barrel is internally provided with a telescopic cavity communicated with the sliding groove.
The two end covers are respectively covered at the front end and the rear end of the annular shell, the through hole is formed in the center of the end cover, and the end cover is fixedly connected with the base through the third fixing frame.
The rolling discs are arranged inside the shell in an annular array mode around the shell, and the number of the rolling discs is the same as that of the sliding grooves and corresponds to that of the sliding grooves one to one.
The supporting device comprises a connecting plate, side plates, a piston rod and a piston disc, the connecting plate is arranged inside the sliding groove in a sliding mode, the side plates and the piston rod are fixed at two ends of the connecting plate respectively, the two side plates are arranged on two sides of the rolling disc respectively, a rotating shaft of the rolling disc is inserted into the side plates, the tail end of the piston rod penetrates through the telescopic cavity, the piston disc is fixedly connected with the tail end of the piston rod, and the piston disc is arranged inside the telescopic cavity.
The hydraulic motor is fixedly connected with the side plate, and an output shaft of the hydraulic motor is fixedly connected with the rotating shaft of the rolling disc.
The shell external fixation has first oil pipe and second oil pipe, and the spout was kept away from to first oil pipe and flexible chamber one end through connection, and the spout was close to second oil pipe and flexible chamber one end through connection.
The hydraulic motor, the first oil pipe and the second oil pipe are connected with the hydraulic station through hydraulic pipelines.
Preferably, the one end protruding that flexible intracavity wall is close to the spout is equipped with first spacing platform, and the one end protruding that the spout was kept away from in flexible chamber is equipped with the spacing platform of second.
The piston disc is arranged between the first limit table and the second limit table in a sliding mode.
The first oil pipe is in through connection with a through hole formed in the second limiting table, and the second oil pipe is in through connection with a through hole formed in the first limiting table.
Preferably, the cross section of the central rod is polygonal, the number of rolling discs included in the rolling mill is equal to the number of sides of the cross section of the central rod, and the thickness of the rolling discs is equal to the side length of the cross section of the central rod.
Preferably, the lower part of the central rod is provided with a screw rod, the rear end face of the screw rod penetrates through the sliding support plate and is rotatably connected with the base through a support frame, the front end of the screw rod is fixedly connected with an output shaft of a second motor, and the second motor is fixedly connected with the base.
The screw rod is connected with a supporting plate in a threaded manner, and the pushing plate is positioned at the front end of the sliding supporting plate.
The base top surface below be equipped with the slide, the push pedal lower extreme slides and sets up inside the slide.
The second motor is electrically connected with the electric control cabinet.
Preferably, the sliding support plate comprises a vertical plate and a horizontal plate, the vertical plate is fixed above the horizontal plate, and the horizontal plate is arranged inside the slideway in a sliding manner.
The vertical plate end surface is sequentially provided with an upper through hole and a lower through hole from top to bottom, the diameter of the lower through hole is larger than the outer diameter of the screw, and the lower through hole is sleeved outside the screw.
Preferably, the shape of the upper through hole is the same as the cross section shape of the central rod.
Compared with the prior art, the invention has the following beneficial effects:
(1) the lubricant is sprayed to the inner wall of the steel pipe through the rotating spray head, and then the brush uniformly coats the lubricant.
(2) The steel pipe can be automatically discharged after being rolled, and the integral automation degree of the equipment is improved.
(3) The fixed fourth fixing frame and the sliding support plate jointly keep the central rod from generating eccentricity in the rolling process.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is an outline view of a hollow tube rolling mill with a lubricant applying function according to the present invention,
figure 2 is a first enlarged view of a portion of the central rod of the present invention,
figure 3 is a cross-sectional view of the center pole of the present invention at a middle portion thereof,
figure 4 is a second enlarged view of a portion of the invention at the center post,
figure 5 is an outline view of the sliding support plate of the present invention,
figure 6 is a cross-sectional view of the lubricant application device of the present invention,
figure 7 is an enlarged view of a portion of figure 6 at a,
figure 8 is an enlarged view of a portion of figure 6 at B,
figure 9 is a central sectional view of the hollow pipe mill of the present invention,
figure 10 is an enlarged view of a portion of figure 9 at C,
figure 11 is a profile view of a rolling mill according to the invention,
figure 12 is an exploded view of the rolling mill of the present invention,
FIG. 13 is a cross-sectional view of the rolling mill of the present invention.
In the figure: 1-base, 101-slideway, 102-support frame, 2-guide tube, 3-lubricant supply station, 4-hydraulic station, 5-electric control cabinet, 6-rolling mill, 601-shell, 6011-hydraulic barrel, 6012-telescopic cavity, 6013-first limit station, 6014-second limit station, 6015-sliding chute, 602-end cover, 6021-through hole, 6022-third fixed frame, 603-rolling disc, 604-supporting device, 6041-connecting plate, 6042-side plate, 6043-piston rod, 6044-piston disc, 605-hydraulic motor, 606-first oil tube, 607-second oil tube, 7-center rod, 701-fourth fixed frame, 8-rotating rod, 801-spray head, 802-brush, 803-first snap ring, 804-lubricant channel, 8041-lubricant inlet, 8042-lubricant outlet, 805-second snap ring, 9-sleeve, 901-liquid feeding cavity, 902-supply pipe, 10-first motor, 1001-fifth fixing frame, 11-screw rod, 1101-push plate, 12-second motor, 13-sliding support plate, 1301-vertical plate, 1302-horizontal plate, 1303-lower through hole and 1304-upper through hole.
Detailed Description
The attached drawings show the preferred embodiment of the hollow tube rolling mill with the function of applying lubricant, and the invention is further described in detail with reference to the attached drawings.
As shown in fig. 1, the hollow tube rolling apparatus includes a base 1, a rolling mill 6, a center rod 7, and a turning rod 8. The rolling mill 6 is fixed above the base 1. And a guide pipe 2 is fixed at the inlet of the rolling mill 6, and the guide pipe 2 and the central rod 7 are coaxially arranged. The guide pipe 2 is fixedly connected with the rolling mill 6 or the base 1.
As shown in fig. 2 to 4, the center rod 7 is located at the front end of the rolling mill 6, the rear end face of the center rod 7 passes through the through hole 6021 and is located at the rear end of the rolling mill 6, and the front end face of the center rod 7 is fixedly connected to the base 1 through the fourth fixing frame 701. The central rod 7 is sleeved with a sliding support plate 13 capable of freely sliding, and the bottom surface of the sliding support plate 13 is in contact with the base 1. The cross-sectional shape of the center rod 7 is the internal shape of the rolled steel pipe, and the internal cross-sectional shape of the steel pipe required to be rolled in this embodiment is a polygon. Therefore, the cross-sectional shape of the center rod 7 is polygonal. The rolling mill 6 comprises the same number of rolling discs 603 as the number of sides of the section of the central rod 7, and the thickness of the rolling discs 603 is equal to the side length of the section of the central rod 7.
The central rod 7 and the rotating rod 8 are coaxial and are sleeved outside the rotating rod 8, the rear end face of the rotating rod 8 penetrates through the rear end of the central rod 7 and is provided with a spray head 801, and the spray head 801 is arranged inside the guide pipe 2. As shown in fig. 6 to 8, a lubricant passage 804 is provided in the rotating rod 8 and the nozzle 801, a lubricant inlet 8041 connected to the lubricant passage 804 is provided at the front end of the circumferential surface of the rotating rod 8, and a plurality of lubricant outlets 8042 connected to the lubricant passage 804 are provided on the circumferential surface of the nozzle 801. The spray nozzle 801 is cylindrical, the outer diameter of the spray nozzle 801 is smaller than the inner diameter of a steel pipe to be rolled, and a plurality of brushes 802 are uniformly distributed on the circumferential surface of the spray nozzle 801.
The circumferential surface of the rotating rod 8 is respectively sleeved with a first snap ring 803 at two sides of the lubricant inlet 8041, the circumferential surface of the rotating rod 8 is sleeved with a sleeve 9 between the two first snap rings 803, a liquid adding cavity 901 communicated with the lubricant inlet 8041 is concavely arranged on the inner wall of the sleeve 9, and a supply pipe 902 communicated with the liquid adding cavity 901 is arranged outside the sleeve 9. To avoid lubricant leakage, a rotary seal is provided between the sleeve 9 and the first snap ring 803.
The supply pipe 902 is connected to the lubricant supply station 3, and the lubricant supply station 3 is a conventional one, and includes a lubricant storage tank and a pump, and the pump inlet is connected to the inside of the lubricant storage tank through a pipeline, and the pump outlet is connected to the supply pipe 902.
The front end of the rotating rod 8 is fixedly connected with an output shaft of the first motor 10, and the first motor 10 is fixedly connected with the base 1 through a fifth fixing frame 1001 below the first motor.
In order to prevent the rotating rod 8 from being separated from the central rod 7, a second snap ring 805 is sleeved at the rear end of the circumferential surface of the rotating rod 8, and the central rod 7 is positioned between the first snap ring 803 and the second snap ring 805 at the rear end.
A lubricant supply station 3, a hydraulic station 4 and an electric control cabinet 5 are fixed on the base 1, and the hydraulic station 4 adopts the prior art. The rolling mill 6 is connected with the hydraulic station 4 through a hydraulic pipeline.
The rolling mill 6 comprises a housing 601, an end cover 602, a rolling disc 603, a support device 604 and a hydraulic motor 605.
A plurality of hydraulic barrels 6011 are convexly arranged on the circumferential surface of the outer side of the annularly-installed shell 601, the plurality of hydraulic barrels 6011 are distributed around the axis of the shell 601 in an annular array, a plurality of sliding grooves 6015 are concavely arranged on the circumferential surface of the inner side of the shell 601, and the sliding grooves 6015 and the hydraulic barrels 6011 are arranged in a one-to-one opposite mode.
The hydraulic barrel 6011 is internally provided with a telescopic cavity 6012 communicated with the sliding groove 6015, a first limiting platform 6013 is convexly arranged at one end, close to the sliding groove 6015, of the inner wall of the telescopic cavity 6012, and a second limiting platform 6014 is convexly arranged at one end, far away from the sliding groove 6015, of the telescopic cavity 6012.
The two end covers 602 are respectively covered at the front end and the rear end of the ring-mounted housing 601, the through hole 6021 is arranged at the center of the end cover 602, and the end cover 602 is fixedly connected with the base 1 through a third fixing frame 6022.
A plurality of rolling discs 603 are arranged in an annular array around the housing 601 inside the housing 601, the number of the rolling discs 603 is the same as that of the sliding chutes 6015, and the rolling discs are in one-to-one correspondence.
Strutting arrangement 604 includes connecting plate 6041, curb plate 6042, piston rod 6043 and piston dish 6044, connecting plate 6041 slides and sets up inside spout 6015, curb plate 6042, piston rod 6043 is fixed in connecting plate 6041 both ends respectively, two blocks of curb plates 6042 set up respectively in rolling dish 603 both sides, rolling dish 603 pivot is inserted and is located inside curb plate 6042, piston rod 6043 is terminal to be worn to locate inside flexible chamber 6012, piston dish 6044 and the terminal fixed connection of piston rod 6043, piston dish 6044 slides and sets up between first spacing platform 6013 and the spacing platform 6014 of second.
The hydraulic motor 605 is fixedly connected with the side plate 6042, and the output shaft of the hydraulic motor 605 is fixedly connected with the rotating shaft of the rolling disc 603.
A first oil pipe 606 and a second oil pipe 607 are fixed outside the housing 601, the first oil pipe 606 is connected with a through hole formed in the second limiting platform 6014 in a penetrating manner, and the second oil pipe 607 is connected with a through hole formed in the first limiting platform 6013 in a penetrating manner.
The hydraulic motor 605, the first oil pipe 606 and the second oil pipe 607 are connected to the hydraulic station 4 through hydraulic lines.
A screw rod 11 is arranged below the central rod 7, the rear end face of the screw rod 11 penetrates through the sliding support plate 13 to be rotatably connected with the base 1 through a support frame 102, the front end of the screw rod 11 is fixedly connected with an output shaft of a second motor 12, and the second motor 12 is fixedly connected with the base 1.
The screw 11 is connected with a supporting plate 1101 in a threaded manner, and the supporting plate 1101 is positioned at the front end of the sliding supporting plate 13.
The slide 101 is arranged below the top surface of the base 1, and the lower end of the push plate 1101 is arranged in the slide 101 in a sliding manner. The slide 101 acts as a stop for the push plate 1101, preventing the push plate 1101 from rotating with the screw 11.
As shown in fig. 6, the sliding support plate 13 includes a vertical plate 1301 and a horizontal plate 1302. The vertical plate 1301 is fixed above the horizontal plate 1302, and the horizontal plate 1302 is slidably disposed inside the chute 101.
The vertical plate 1301 has an upper through hole 1304 and a lower through hole 1303 sequentially formed on the end surface thereof, the diameter of the upper through hole 1304 is smaller than the outer diameter of the steel pipe to be rolled, the shape of the upper through hole 1304 is the same as the shape of the cross section of the center rod 7, and the sliding support plate 13 supports the center rod 7 through the upper through hole 1304. The diameter of the lower through hole 1303 is larger than the outer diameter of the screw rod 11, the lower through hole 1303 is sleeved outside the screw rod 11, and the screw rod 11 passes through the lower through hole 1303 and cannot contact with the vertical plate 1301.
The first motor 10, the second motor 12, the lubricant supply station and the hydraulic station 4 are respectively electrically connected with the electric control cabinet 5.
A hollow tube rolling process comprises the following steps:
A. the front end of a steel pipe to be rolled is inserted into the guide pipe 2, the spray nozzle 801 and the rear end of the central rod 7 are inserted into the steel pipe, and then the hydraulic ejector rod pushes the steel pipe to enter the rolling mill 6 through the through hole 6021;
B. the first motor 10 drives the rotating rod 8 to rotate, the external lubricant supply station 3 supplies lubricant to the lubricant channel 804 through the pipeline and the supply pipe 902, the lubricant is sprayed onto the inner wall of the steel pipe through the lubricant outlet 8042, and the rotating brush 802 uniformly coats the lubricant;
C. the hydraulic station 4 supplies hydraulic oil to the hydraulic motor 605 through a pipeline to drive the hydraulic motor 605 to rotate, rolls the steel pipe, and rolls the inner section of the steel pipe into the section of the central rod 7;
D. before the steel pipe rolling starts, the second motor 12 is started to drive the screw rod 11 to rotate, so that the push plate 1101 moves to the front end of the screw rod 11, when the steel pipe is rolled, the steel pipe moves forwards and simultaneously pushes the sliding support plate 13 to move forwards, and at the moment, the sliding support plate 13, the fourth fixing frame 701 and the steel pipe jointly keep the central rod 7 not to slide and not to have an eccentric phenomenon;
E. after the steel pipe is rolled, the hydraulic station 4 supplies hydraulic oil to the inside of the telescopic cavity 6012 through the second oil pipe 607, so that the piston disc 6044 moves in the direction away from the axis of the shell 601, the rolling disc 603 then keeps away from the axis of the shell 601, the second motor 12 is started, the screw 11 drives the push plate 1101 to move backwards, the push plate 1101 pushes the sliding support plate 13 to move backwards, the sliding support plate 13 pushes the steel pipe to move backwards, the steel pipe is further pushed out from the guide pipe 2, and then the rolled steel pipe is manually taken down.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The hollow tube rolling device is characterized in that:
comprises a base (1), a rolling mill (6), a central rod (7) and a rotating rod (8), wherein the rolling mill (6) is fixed above the base (1),
the central rod (7) is positioned at the front end of the rolling mill (6), the rear end face of the central rod (7) passes through the central rod (6021) and is arranged at the rear end of the rolling mill (6), the front end face of the central rod (7) is fixedly connected with the base (1) through a fourth fixing frame (701), a sliding support plate (13) capable of freely sliding is sleeved on the central rod (7), the bottom surface of the sliding support plate (13) is contacted with the base (1),
the central rod (7) and the rotating rod (8) are coaxial and are sleeved outside the rotating rod (8), the rear end face of the rotating rod (8) penetrates through the rear end of the central rod (7) and is provided with a spray head (801), lubricant channels (804) are arranged inside the rotating rod (8) and the spray head (801), the front end of the circumferential face of the rotating rod (8) is provided with a lubricant inlet (8041) communicated with the lubricant channels (804), the circumferential face of the spray head (801) is provided with a plurality of lubricant outlets (8042) communicated with the lubricant channels (804), the circumferential face of the rotating rod (8) is respectively sleeved with a first clamping ring (803) at two sides of the lubricant inlet (8041), a sleeve (9) is sleeved between the two first clamping rings (803) at the circumferential face of the rotating rod (8), a liquid feeding cavity (901) communicated with the lubricant inlet (8041) is concavely arranged on the inner wall of the sleeve (9), a supply pipe (902) communicated with the liquid feeding cavity (901) is arranged outside the sleeve, the front end of the rotating rod (8) is fixedly connected with an output shaft of a first motor (10), the first motor (10) is fixedly connected with the base (1) through a fifth fixing frame (1001) below the first motor,
a lubricant supply station (3), a hydraulic station (4) and an electric control cabinet (5) are fixed on the base (1), a rolling mill (6) is connected with the hydraulic station (4) through a hydraulic pipeline, a supply pipe (902) is connected with the lubricant supply station (3) through a pipeline,
the first motor (10), the supply station (3) and the hydraulic station (4) are respectively electrically connected with the electric control cabinet (5).
2. The hollow tube rolling apparatus as claimed in claim 1, wherein:
a guide pipe (2) is fixed at an inlet at the rear end of the rolling mill (6), a spray head (801) is arranged in the guide pipe (2),
the guide tube (2) and the central rod (7) are coaxially arranged.
3. The hollow tube rolling apparatus as claimed in claim 2, wherein:
the guide pipe (2) is fixedly connected with the rolling mill (6) or the base (1).
4. The hollow tube rolling apparatus as claimed in claim 1, wherein:
the spray head (801) is cylindrical, the outer diameter of the spray head (801) is smaller than the inner diameter of a steel pipe to be rolled, a plurality of brushes (802) are uniformly distributed on the circumferential surface of the spray head (801),
the rear end of the circumferential surface of the rotating rod (8) is sleeved with a second clamping ring (805), and the central rod (7) is positioned between the first clamping ring (803) and the second clamping ring (805) at the rear end.
5. The hollow tube rolling apparatus as claimed in any one of claims 1 to 4, wherein:
the rolling mill (6) comprises a shell (601), an end cover (602), a rolling disc (603), a supporting device (604) and a hydraulic motor (605),
a plurality of hydraulic barrels (6011) are convexly arranged on the circumferential surface of the outer side of the annularly-installed shell (601), the plurality of hydraulic barrels (6011) are distributed in an annular array around the axis of the shell (601), a plurality of sliding chutes (6015) are concavely arranged on the circumferential surface of the inner side of the shell (601), the sliding chutes (6015) and the hydraulic barrels (6011) are arranged in a one-to-one opposite mode,
a telescopic cavity (6012) communicated with the chute (6015) is arranged in the hydraulic barrel (6011),
the two end covers (602) are respectively covered at the front end and the rear end of the annular shell (601), the through hole (6021) is arranged at the central position of the end cover (602), the end cover (602) is fixedly connected with the base (1) through a third fixing frame (6022),
a plurality of rolling discs (603) are arranged in the shell (601) in an annular array around the shell (601), the number of the rolling discs (603) is the same as that of the sliding chutes (6015) and the rolling discs are in one-to-one correspondence,
the supporting device (604) comprises a connecting plate (6041), side plates (6042), a piston rod (6043) and a piston disc (6044), the connecting plate (6041) is arranged inside the sliding chute (6015) in a sliding mode, the side plates (6042) and the piston rod (6043) are fixed at two ends of the connecting plate (6041) respectively, the two side plates (6042) are arranged on two sides of the rolling disc (603) respectively, a rotating shaft of the rolling disc (603) is inserted into the side plates (6042), the tail end of the piston rod (6043) penetrates through the inside of the telescopic cavity (6012), the piston disc (6044) is fixedly connected with the tail end of the piston rod (6043), the piston disc (6044) is arranged inside the telescopic cavity (6012) in,
the hydraulic motor (605) is fixedly connected with the side plate (6042), the output shaft of the hydraulic motor (605) is fixedly connected with the rotating shaft of the rolling disc (603),
a first oil pipe (606) and a second oil pipe (607) are fixed outside the shell (601), the first oil pipe (606) is in through connection with one end of the telescopic cavity (6012) far away from the sliding chute (6015), the second oil pipe (607) is in through connection with one end of the telescopic cavity (6012) close to the sliding chute (6015),
the hydraulic motor (605), the first oil pipe (606) and the second oil pipe (607) are connected with the hydraulic station (4) through hydraulic pipelines.
6. The hollow tube rolling apparatus as claimed in claim 5, wherein:
a first limit platform (6013) is convexly arranged at one end of the inner wall of the telescopic cavity (6012) close to the chute (6015), a second limit platform (6014) is convexly arranged at one end of the telescopic cavity (6012) far away from the chute (6015),
the piston disc (6044) is arranged between the first limit platform (6013) and the second limit platform (6014) in a sliding way,
the first oil pipe (606) is in through connection with a through hole formed in the second limiting platform (6014), and the second oil pipe (607) is in through connection with a through hole formed in the first limiting platform (6013).
7. The hollow tube rolling apparatus as claimed in claim 5, wherein:
the cross section of the central rod (7) is polygonal, the number of the rolling discs (603) contained in the rolling mill (6) is the same as the number of the edges of the cross section of the central rod (7), and the thickness of the rolling discs (603) is equal to the length of the edges of the cross section of the central rod (7).
8. The hollow tube rolling apparatus as claimed in claim 5, wherein:
a screw rod (11) is arranged below the central rod (7), the rear end face of the screw rod (11) passes through the sliding support plate (13) and is rotatably connected with the base (1) through a support frame (102), the front end of the screw rod (11) is fixedly connected with an output shaft of a second motor (12), the second motor (12) is fixedly connected with the base (1),
a supporting plate (1101) is connected to the screw (11) in a threaded manner, the supporting plate (1101) is positioned at the front end of the sliding supporting plate (13),
a slide way (101) is arranged below the top surface of the base (1), the lower end of the push plate (1101) is arranged in the slide way (101) in a sliding way,
the second motor (12) is electrically connected with the electric control cabinet (5).
9. The hollow tube rolling apparatus as claimed in claim 8, wherein:
the sliding support plate (13) comprises a vertical plate (1301) and a horizontal plate (1302), the vertical plate (1301) is fixed above the horizontal plate (1302), the horizontal plate (1302) is arranged in the slideway (101) in a sliding way,
the end face of the vertical plate (1301) is sequentially provided with an upper through hole (1304) and a lower through hole (1303), the diameter of the lower through hole (1303) is larger than the outer diameter of the screw rod (11), and the lower through hole (1303) is sleeved outside the screw rod (11).
10. The hollow tube rolling apparatus as claimed in claim 9, wherein:
the shape of the upper through hole (1304) is the same as the cross section shape of the central rod (7).
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| CN202110162217.2A CN112974062B (en) | 2021-02-05 | 2021-02-05 | Hollow tube rolling mill with lubricant smearing function |
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| CN202110162217.2A CN112974062B (en) | 2021-02-05 | 2021-02-05 | Hollow tube rolling mill with lubricant smearing function |
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| CN112974062B (en) | 2022-07-15 |
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