CN107350288B - Rail beam type thermal centering machine - Google Patents
Rail beam type thermal centering machine Download PDFInfo
- Publication number
- CN107350288B CN107350288B CN201710637744.8A CN201710637744A CN107350288B CN 107350288 B CN107350288 B CN 107350288B CN 201710637744 A CN201710637744 A CN 201710637744A CN 107350288 B CN107350288 B CN 107350288B
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- Prior art keywords
- centering
- seat
- rail beam
- rail
- guide
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims description 24
- 238000003825 pressing Methods 0.000 claims description 22
- 238000010516 chain-walking reaction Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000033764 rhythmic process Effects 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000003028 elevating effect Effects 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 206010039509 Scab Diseases 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009785 tube rolling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/14—Guiding, positioning or aligning work
Abstract
The invention provides a rail beam type thermal centering machine, which relates to the field of seamless steel pipes, and comprises a frame, a stabilizing device, a supporting bracket and a centering device, wherein the stabilizing device, the supporting bracket and the centering device are arranged in the frame, the frame comprises a rail beam which is horizontally arranged and two supporting pieces which are vertically arranged, two ends of the rail beam are respectively supported on the two supporting pieces, the rail beam is positioned above a centering center line and is parallel to the centering center line, the stabilizing device and the centering device are sequentially arranged along the centering center line and are respectively arranged on the rail beam, the supporting bracket is correspondingly arranged below the stabilizing device and is lower than the centering center line, and the rail beam type thermal centering machine further comprises a distance adjusting device which can adjust the distance between the supporting bracket and the rail beam. The rail beam type thermal centering machine provided by the invention can be used for selectively centering the pipe blank, and reducing the influence on the production rhythm.
Description
Technical Field
The invention relates to the field of seamless steel pipes, in particular to an additional process device before perforating a hot tube blank, and particularly relates to a rail beam type hot centering machine used on a seamless tube rolling line.
Background
In the process of rolling a seamless steel tube, a centering process is sometimes required to be carried out on a heat pipe blank before perforation, and the centering process is mainly used for reducing defects of a blank pipe and improving the quality of products, including centering the head end and the tail end of the blank pipe. The head of the heat pipe blank is centered, so that the nose of the plug is correctly aligned with the axis of the pipe blank during perforation, uneven wall thickness at the front end of the capillary can be reduced, and the biting condition of perforation is improved; the tail of the heat pipe blank is centered, so that iron lugs (annular or irregular sheet steel scraps) at the tail end of the capillary can be eliminated, and the quality of the capillary is improved. The iron lugs cause damage such as scratch of the subsequent rolling core rod, scab on the inner surface of the pierced billet, and the like. The iron lugs are eliminated, so that the service life of the core rod is greatly prolonged, and meanwhile, the defects of internal scratches and scabs of the steel pipe are reduced.
At present, the existing thermal centering machine is specially provided with a region, a certain auxiliary working step is arranged and connected in series on a production line, no matter the tube blank is required to be centered in the rolling process of the seamless steel tube, the tube blank can pass through the relevant auxiliary working step (auxiliary machine), the production rhythm is influenced, the production period is occupied, and the tube blank temperature is reduced to a certain extent, so that perforation is not facilitated.
Disclosure of Invention
The invention aims to provide a rail beam type thermal centering machine which can selectively center a pipe blank and reduce the influence on the production rhythm.
In order to achieve the above object, the present invention provides a rail beam type thermal centering machine, wherein the rail beam type thermal centering machine comprises a frame, a stabilizing device, a support bracket and a centering device, wherein the stabilizing device, the support bracket and the centering device are installed in the frame, the frame comprises a horizontally arranged rail beam and two vertically arranged support pieces, two ends of the rail beam are respectively supported on the two support pieces, the rail beam is positioned above a centering center line and parallel to the centering center line, the stabilizing device and the centering device are sequentially arranged along the centering center line and are all installed on the rail beam, the support bracket is correspondingly arranged below the stabilizing device and is lower than the centering center line, and the rail beam type thermal centering machine further comprises a distance adjusting device capable of adjusting the distance between the support bracket and the rail beam.
Compared with the prior art, the invention has the following characteristics and advantages:
the rail beam type thermal centering machine provided by the invention can selectively center the pipe blank, and can select release for the pipe blank without centering, so that the production rhythm is not influenced at all; for the tube blank which needs to be centered, the centering process is short in time, the occupied period is short, the action rhythm is fast, and the production efficiency is high.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, proportional sizes, and the like of the respective components in the drawings are merely illustrative for aiding in understanding the present invention, and are not particularly limited. Those skilled in the art with access to the teachings of the present invention can select a variety of possible shapes and scale sizes to practice the present invention as the case may be.
FIG. 1 is a schematic diagram (I) of a rail beam type thermal centering machine according to the present invention;
FIG. 2 is a side view of a rail beam type thermal centering machine according to the present invention;
FIG. 3 is a schematic diagram of a rail beam type thermal centering machine according to the present invention;
fig. 4 is a side view of a slide according to the present invention;
FIG. 5 is a schematic view (I) of a movable pressing member according to the present invention;
FIG. 6 is a schematic view (II) of the movable pressing member according to the present invention;
FIG. 7 is a schematic view of a movable pressing member according to the present invention;
FIG. 8 is a schematic diagram of a rail beam type thermal centering machine according to the present invention;
FIG. 9 is a schematic view of a pin hole positioning mechanism according to the present invention;
FIG. 10 is a schematic view of a ratchet positioning mechanism according to the present invention;
FIG. 11 is a schematic view of a ratchet slider mechanism according to the present invention;
FIG. 12 is a schematic view of a positioning device according to the present invention;
FIG. 13 is a schematic view of the structure of the screw walking device of the present invention;
FIG. 14 is a schematic view of a guide bar according to the present invention;
FIG. 15 is a schematic view of the structure of the guide pin of the present invention;
fig. 16 is a schematic structural view of a lifting unit in the present invention.
Reference numerals illustrate:
100. rail beam type thermal centering machine; a 110 rack;
111. a rail beam; 1111 top beam;
1112. a side plate; 1113 guide rails;
112. a support; 113 baffles;
120. a stabilizing device; 121 fixing the pressing piece;
122. a movable pressing member; 130 a support bracket;
131. a bracket; 140 centering means;
141. pushing a hydraulic cylinder; 142 guide rods;
143. a guide seat; 144 top cone;
145. a guide pin; 146 fixing sheets;
147. a shaft sleeve; 148 end caps;
149. a seal ring; 150 distance adjusting means;
151. a lifting unit; 1511 stand;
1512. a crank; 1513 swing arms;
1514. a lifting seat; 1515 linkages;
152. a driving unit; 1521 holders;
1522. lifting the hydraulic cylinder; 1523 tie rods;
153. a rail beam lifting mechanism; 160 slides;
170. a screw walking device; 171 screws;
172. a nut; 1721 mounting a buckle;
1722. a screw; 173 thrust block;
174. a driving motor; 175 mounting a component;
1751. a bearing seat; 1752 bearings;
1753. a transparent cover; 1754 spacer sleeves;
176. a mounting assembly; 1761 fixing the beam;
1762. a thrust bearing; 1763 shaft end baffle;
1764. a bearing; 1765 end cap;
1766. a protective cover; 180 chain running gear;
181. a chain; 182 tensioning wheel;
183. a drive sprocket; 184 driven sprockets;
185. a sprocket support; 186 link end brackets;
187. a pin hole positioning mechanism; 1871 rail beam pin holes;
1872. a slide seat pin hole; 1873 pins;
188. a ratchet slide positioning mechanism 1881 ratchet bar;
1882. locking the sliding block; 1883 pulling on the lever;
1884. locking a hydraulic cylinder; 1885 connection blocks;
189. a ratchet positioning mechanism; 1891 locking pieces;
1892. a stop step; 1893 locking cylinders;
1894. a ratchet bar; 200 pipe blanks;
c, centering a central line; 1421 positioning slots;
1731. a key.
Detailed Description
The details of the invention will be more clearly understood in conjunction with the accompanying drawings and description of specific embodiments of the invention. However, the specific embodiments of the invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Given the teachings of the present invention, one of ordinary skill in the related art will contemplate any possible modification based on the present invention, and such should be considered to be within the scope of the present invention.
Referring to fig. 1 to 16, the present invention proposes a rail beam type thermal centering machine 100, which includes a frame 110, a fixing device 120 installed in the frame 110, a support bracket 130 and a centering device 140, wherein the frame 110 includes a horizontally disposed rail beam 111 and two vertically disposed support members 112, two ends of the rail beam 111 are respectively supported on the two support members 112, the rail beam 111 is disposed above and parallel to a centering center line C, the fixing device 120 and the centering device 140 are sequentially disposed along the centering center line C and are both installed on the rail beam 111, the support bracket 130 is correspondingly disposed below the fixing device 120 and below the centering center line C, and the rail beam type thermal centering machine 100 further includes a distance adjusting device 150 capable of adjusting a distance between the support bracket 130 and the rail beam 111.
When the rail beam type thermal centering machine 100 provided by the invention works, the pipe blank 200 falls onto the support bracket 130 along a production line (the axis of the pipe blank 200 is transversely moved in the direction parallel to the centering center line C), if the pipe blank 200 needs to be centered, the distance between the support bracket 130 and the rail beam 111 is reduced through the distance adjusting device 150 until the upper surface of the pipe blank 200 contacts the stabilizing device 120, the pipe blank 200 is stabilized by the support bracket 130 and the stabilizing device 120, the centering device 140 thermally centers the pipe blank 200 along the centering center line C, after the centering, the centering device 140 is retracted, the support bracket 130 and the rail beam 111 are restored to the original positions through the distance adjusting device 150, and finally the pipe blank 200 with the centering is dropped onto the transverse moving device (not shown in the figure), and the rail beam type thermal centering machine 100; if the centering of the tube blank 200 is not required, the distance adjusting device 150 is not started, and the tube blank 200 is directly dropped onto the traversing device to be carried away. Thus, the rail beam type thermal centering machine 100 provided by the invention can selectively center the pipe blank 200, and the pipe blank 200 without centering is selected to be free, so that the production rhythm is not influenced at all; the tube blank 200 to be centered has the advantages of short centering process, short occupied period, quick action rhythm and high production efficiency. The front and rear connection devices of the rail beam type thermal centering machine 100 provided by the present invention are all existing devices, and the traversing device for traversing the tube blank 200 onto the support bracket 130 and moving out is also the prior art, and will not be described herein.
In an alternative example of the present invention, the distance adjusting device 150 is a bracket lifting device disposed below the support bracket, and the support member 112 is a column, the bottom end of which directly abuts against the ground. The distance between the support bracket 130 and the rail 111 is adjusted by driving the support bracket 130 up and down by the bracket elevating means. When the pipe blank 200 needs to be centered, the lifting device drives the supporting bracket 130 to be lifted to the centering height, so that the upper surface of the pipe blank 200 is contacted with the stabilizing device 120; after centering, the lifting device drives the support bracket 130 to descend to the original position.
In an alternative example, the support bracket 130 includes a plurality of brackets 131 sequentially spaced apart in a direction parallel to the rail 111, and the bracket elevating device includes a plurality of elevating units 151, one elevating unit 151 being provided under each bracket 131, the elevating unit 151 driving the corresponding bracket 131 to be elevated and lowered.
In an alternative example, each lifting unit 151 includes a frame 1511, a crank 1512, a swing arm 1513, a lifting seat 1514, and a link 1515, the upper end of the crank 1512 and one end of the swing arm 1513 are fixedly connected, a fixed angle is formed between the crank 1512 and the swing arm 1513 (the crank 1512 and the swing arm 1513 can be integrally formed), the fixed point of the crank 1512 and the swing arm 1513 is hinged on the frame 1511, the other end of the swing arm 1513 is hinged with the upper end of the lifting seat 1514, the lower end of the lifting seat 1514 is hinged with one end of the link 1515, the other end of the link 1515 is hinged on the frame 1511, the crank 1512, the swing arm 1513, the lifting seat 1514, and the link 1515 form a parallel rocker mechanism, the upper end of the lifting seat 1514 is fixedly connected with a bracket 131, the bracket lifting device further includes a driving unit 152, the driving unit 152 includes a fixed seat 1521, a lifting hydraulic cylinder 1522 and a pull rod 1523 parallel to a centering center line C, the lifting hydraulic cylinder 1522 is hinged on the fixed seat 1521, the piston rod 1522 is hinged with one end of the pull rod 1523, and the other end of each crank 1522 is hinged on the lower end of the pull rod 1523. Thus, pulling the pull rod 1523 rotates the swing arm 1513 by the crank 1512 hinged to the pull rod 1523, so that the lifting seat 1514 equipped with the bracket 131 is lifted and lowered, thereby achieving lifting and lowering of the pipe blank 200. Because the crank 1512 of each lifting unit 151 is hinged on the pull rod 1523, each lifting unit 151 is guaranteed to synchronously lift and descend, and uneven stress and inclination of the tube blank 200 in the moving process are avoided. Meanwhile, in the moving process of the pull rod 1523, the pull rod 1523 only bears the pulling force, namely the pulling force applied by the lifting hydraulic cylinder 1522, and the downward pressure of the tube blank 200 is borne by the hinge point at the upper end of the crank 1512, so that the service life of the pull rod 1523 is ensured.
In another alternative example of the present invention, as shown in fig. 3, the distance adjusting means 150 includes two rail beam elevating mechanisms 153, the two rail beam elevating mechanisms 153 are respectively disposed at bottom ends of the two supporting members 112, the rail beam elevating mechanisms 153 drive the corresponding supporting members 112 to ascend and descend, the supporting brackets 130 are fixed on the ground, and the pipe blank 200 is not lifted. In operation, the two rail beam lifting mechanisms 153 act synchronously, ensuring that the rail beam 111 is always in a horizontal setting. The support bracket 130 may be replaced with a transport roller way, a storage rack, or some fixed location of a stopped conveyor chain.
In an alternative example, the rail beam lifting mechanism 153 may be a screw lift.
In another alternative example, the rail lifting mechanism 153 may be a hydraulic cylinder (not shown).
In an alternative embodiment of the present invention, a baffle 113 is further provided in the frame 110 for stopping the tube blank 200, the baffle 113 is fixed to the support 112 near one end of the fixing device 120, and the baffle 113 is arranged such that the centering center line C vertically penetrates the baffle 113. During the centering, the end of the tube blank 200 facing away from the centering device 140 is pressed against the stop 113.
In an alternative example of the present invention, the centering device 140 is movably mounted on the rail 111 through the sliding seat 160, the rail 111 includes a top beam 1111 horizontally disposed and two side plates 1112 vertically disposed, the top beam 1111 and the two side plates 1112 are disposed parallel to the centering center line C, the cross section of the top beam 1111 is in a shape of a Chinese character 'kou', top edges of the two side plates 1112 are fixedly connected to two side edges of the bottom surface of the top beam 1111, the sliding seat 160 is disposed between the two side plates 1112, each side plate 1112 is provided with a guide rail 1113 protruding inwards, the guide rail 1113 is disposed parallel to the centering center line C, a rail groove corresponding to the guide rail 1113 on the same side is formed on a side wall of the sliding seat 160, and the guide rail 1113 extends into the corresponding rail groove. In this way, the slide 160 can reciprocate along the guide rail 1113, when centering is performed on tube blanks of different lengths, the stroke of the centering device 140 (the stroke of the pushing hydraulic cylinder 141 in the centering device 140) is insufficient to satisfy the centering of tube blanks of all the various lengths, a certain distance is often required to be approached, and the centering device 140 is moved to a proper position by the slide 160 and then the centering operation is performed.
In an alternative example of the present invention, the centering device 140 includes a pushing hydraulic cylinder 141, a guide rod 142, a guide seat 143, and a tip cone 144, where the guide seat 143 and the pushing hydraulic cylinder 141 are both fixed below the slide 160, the guide seat 143 has a through cavity disposed along the centering center line C, the guide rod 142 penetrates the through cavity and can reciprocate along the centering center line C, the tip cone 144 is disposed at one end of the guide rod 142 toward the fixing device 120 (the head end of the guide rod 142), and the other end of the guide rod 142 opposite to the fixing device 120 (i.e., the tail end of the guide rod 142) is connected to the piston rod of the pushing hydraulic cylinder 141. When the piston rod of the pushing hydraulic cylinder 141 extends, the piston rod pushes the guide rod 142 to slide towards the pipe blank 200, and the tip cone 144 at the head end of the guide rod 142 centers the pipe blank 200.
In an alternative example of the present invention, the side wall of the guide rod 142 is further provided with a positioning groove 1421 formed along the centering center line C, the outer wall of the guide seat 143 is provided with a pin hole corresponding to the positioning groove 1421, and the guide pin 145 penetrates the pin hole and is inserted into the positioning groove 1421, and the guide pin 145 is detachably connected with the guide seat 143. The guide bar 142 is not rotatable in the guide seat 143 due to the restraining action of the guide pin 145, and can only reciprocally slide along the centering center line C.
In an alternative example, the guide pin 145 is detachably mounted on the guide seat 143 by a fixing piece 146 and a screw, and the fixing piece 146 is detachably disposed on the outer wall of the guide seat 143 by the screw and closes the pin hole on the guide seat 143, thereby preventing the guide pin 145 from sliding out of the guide seat 143, and the guide pin 145 abuts against the fixing piece 146. And the fixing piece 146 is detachably connected, so that the guide pin 145 can be conveniently taken out and replaced after the guide pin 145 is worn.
In an alternative example, the end of the guide pin 145 inserted into the positioning groove 1421 has two guide surfaces to prevent the guide pin 145 from rotating.
In an alternative example, the guide 142 is comprised of a shaft having a cylindrical shape and a head having an elliptical cylindrical shape, the head being secured to the head end of the shaft and offset from the shaft, the head being configured to receive the tip cone 144.
In an alternative example, the tip cone 144 may be removably mounted on the head and secured by a latch, and the tip cone 144 may be replaced according to different specifications of tube blanks.
In an alternative example, a sleeve 147 is provided between the guide rod 142 and the guide seat 143 and is secured by an end cap 148; the end cap 148 is mounted on the guide seat 143 by a screw, and a sealing ring 149 is arranged between the end cap 148 and the guide rod 142.
In an alternative example of the present invention, the fixing device 120 includes two fixed pressing pieces 121 and one movable pressing piece 122, the movable pressing piece 122 is fixed on the slider 160, and the two fixed pressing pieces 121 are fixed on the rail 111 at intervals along the axial direction of the rail 111. Thus, in operation, the two fixed pressing pieces 121 are positioned at one end of the tube blank 200, and the movable pressing piece 122 is positioned at the other end of the tube blank 200, so that the uniform stress on the two ends of the tube blank 200 is ensured.
Wherein, the fixed pressing piece 121 and the movable pressing piece 122 can both adopt V-shaped plate structures, and V-shaped plates with different specifications can be replaced according to the diameter of the tube blank 200; the fixed pressing piece 121 and the movable pressing piece 122 can also adopt V-shaped roller structures, and V-shaped rollers with different specifications can be replaced according to the diameter of the tube blank 200; the fixed pressing piece 121 and the movable pressing piece 122 also adopt a double flat roller structure which is obliquely arranged, and the double flat roller sizes of different specifications are changed according to the diameter size of the tube blank 200.
In an alternative example of the present invention, the top end of the slide 160 is provided with a screw walking device 170, and the screw walking device 170 can drive the slide 160 to reciprocate along the rail beam 111 and position the slide 160, drive the slide 160 to approach a distance according to the length of the tube blank 200, position the slide 160, and then perform the centering action. The screw walking device 170 comprises a screw 171, a nut 172, a thrust seat 173 and a driving motor 174, wherein the screw 171 is parallel to the rail beam 111, two ends of the screw 171 are rotatably arranged on the rail beam 111 through a mounting assembly, the nut 172 is sleeved outside the screw 171 and is in threaded fit with the screw 171, the thrust seat 173 is sleeved outside the nut 172 and is fixedly connected with the nut 172, the bottom surface of the thrust seat 173 is fixedly connected with the sliding seat 160, and one end (a transmission end) of the screw 171 is connected with the driving motor 174 (a gear motor). The driving motor 174 drives the screw 171 to rotate, so as to push the nut 172 in threaded engagement with the screw 171 to move along the axial direction of the screw 171, and further drive the thrust block 173 and the slide 160 to move.
In an alternative example, thrust seat 173 is mounted on slide 160 by key 1731; nut 172 is mounted within thrust block 173 and is secured by screws 1722 and mounting tabs 1721.
In an alternative example, the mounting assembly 175 of the drive end of the screw 171 includes a bearing 1752, a bearing mount 1751, a through cap 1753, and a spacer 1754. The bearing housing 1751 is mounted to the rail 111 (the rail 111 has its two side plate ends), and the drive end of the screw 171 is fixed in the bearing housing 1751 by means of bearings 1752 and by means of a through cap 1753 and a spacer 1754.
In an alternative example, the mounting assembly 176 at the other end of the screw 171 includes a fixed beam 1761, a bearing 1764, an end cap thrust bearing 1762, an axle end stop 1763, and a shield 1766, the fixed beam 1761 is mounted within the rail 111, the bearing 1764 for supporting the screw 171 is mounted within the fixed beam 1761, and the bearing 1764 is secured within the fixed beam 1761 by the end cap 1765, the right ring of the thrust bearing 1762 abuts the fixed beam 1761 (the thrust bearing 1762 engages the fixed beam 1761), the left ring of the thrust bearing 1762 abuts the axle end stop 1763, and the screw 171 extends through the bearing and the thrust bearing 1762 and is fixedly connected with the axle end stop 1763 (the screw 171 and the axle end plate are rotatable together), the thrust bearing being protected by the shield 1766. The axial force of the screw 171 acts on the thrust bearing 1762, preventing the screw 171 from displacing axially itself.
In an alternative example, the drive motor 174 is mounted to the rail 111 by brackets.
In an alternative example, the threads of both the nut 172 and the screw 171 may be saw-tooth threads to more effectively withstand the reactive thrust forces of the tip cone 144 during centering.
In another alternative example of the present invention, the top end of the sliding base 160 is provided with a chain running device 180, and the chain running device 180 can drive the sliding base 160 to reciprocate along the rail 111. The chain running gear 180 includes chain 181, take-up pulley 182, driving sprocket 183 and four driven sprocket 184, wherein two driven sprocket 184 are located the upper edge of back timber 1111, two driven sprocket 184 are located the lower edge of back timber 1111, four driven sprocket 184 are the rectangle and arrange, driving sprocket 183 is located an edge of this rectangle, the tensioning of chain 181 is in driving sprocket 183 and four driven sprocket 184 outsides, take-up pulley 182 sets up in the chain 181 outside, take-up pulley 182, driving sprocket 183 and four driven sprocket 184 all install on back timber 1111 through sprocket support 185, the end of chain 181 still is provided with chain end support 186, chain end support 186 and slide 160 fixed connection. The driving sprocket 183 is connected with a transmission motor, and the transmission motor drives the driving sprocket 183 to rotate, and the chain 181 drags the chain end bracket 186 and the sliding seat 160 to move under the drive of the driving sprocket 183.
In an alternative example of the present invention, the chain running device 180 further has a pin hole positioning mechanism 187 to position the slider 160, the pin hole positioning mechanism 187 including a pin 1873, a rail pin hole group provided on the side plate 1112 and including a plurality of rail pin holes 1871 provided at intervals along a moving track of the slider 160, and a slider pin hole group including a plurality of slider pin holes 1772 provided on the slider 160 and corresponding to the rail pin hole group. The pin shaft is inserted into the slide seat pin hole 1872 and the rail beam pin hole 1871, so that the slide seat 160 can be positioned; the slide pin hole 1872 may be formed in a fixed block mounted on the slide 160. The pitch of the slide pin holes 1872 is different from the pitch of the rail pin holes 1871 by a fixed walking distance per gear, specifically, when the first slide pin hole 1872 of the slide pin hole group corresponds to the first rail pin hole 1871 of the rail pin hole group, the slide 160 is moved so that the second slide pin hole 1872 of the slide pin hole group corresponds to the second rail pin hole 1871 of the rail pin hole group, a difference (i.e., a unit stroke), and so on, if the slide pin hole group has six slide pin holes 1872, and when the sixth slide pin hole 1872 corresponds to the second rail pin hole 1871 of the rail pin hole group, six differences are obtained, and then the process is restarted, when the first slide pin hole 1872 of the slide pin hole group corresponds to the second rail pin hole 1871 of the rail pin hole group, a rail pin hole pitch has been moved, and so on, thereby obtaining the required quantitative walking distance.
In another alternative example of the present invention, the chain running gear 180 further has a ratchet slide positioning mechanism 188 to position the slide 160, the ratchet slide positioning mechanism 188 includes a ratchet bar 1881, a locking slide 1882, a pulling rod 1883, a locking hydraulic cylinder 1884 and a connecting block 1885, the ratchet bar 1881 is installed on the lower edge of the top beam 1111 along the axial direction of the top beam 1111, the locking hydraulic cylinder 1884 is installed on the slide 160, and one end of the pulling rod 1883 is hinged with the locking slide 1882; the other end of the pull rod 1883 is hinged to a connecting block 1885, and the connecting block 1885 is fixed to the slider 160. The slide 160 is dragged by the chain 181, and after the slide 160 walks for a required quantitative distance, the piston rod of the locking hydraulic cylinder 1884 is lifted, and the piston rod of the locking hydraulic cylinder 1884 pushes the locking slide 1882 to move upwards and be meshed with the ratchet bar 1881, so that the slide 160 is positioned. And the ratchet bar 1881 can bear the reaction force of the centering action after being meshed with the locking slide block 1882, thereby avoiding the reaction force of the chain 181 bearing the centering action and ensuring the normal operation of the chain running device 180.
In yet another alternative example of the present invention, chain running gear 180 also has a ratchet positioning mechanism 189 to position slide 160, ratchet positioning mechanism 189 including a lock block 1891, a stop step 1892, a lock cylinder 1893, and a ratchet bar 1894, ratchet bar 1894 being secured to the lower edge of top beam 1111. The stop step 1892 is arranged at one end of the sliding seat 160 and protrudes out of the upper surface of the sliding seat, the locking hydraulic cylinder 1893 is arranged on the sliding seat 160, the locking hydraulic cylinder 1893 is arranged close to the stop step 1892, the locking block 1891 is fixedly arranged at the top end of a piston rod of the locking hydraulic cylinder 1893 and is connected with the stop step 1892 (is attached to the locking block), the piston rod of the locking hydraulic cylinder 1893 pushes the locking block 1891 to move upwards, ratchet racks 1894 are arranged on the locking block 1891 and are correspondingly matched with ratchet racks 1894, and the locking block 1891 is meshed with the ratchet racks 1894 to realize the positioning of the sliding seat 160.
The detailed explanation of the embodiments described above is only for the purpose of explaining the present invention so as to enable a better understanding of the present invention, but the descriptions should not be construed as limiting the present invention in any way, and in particular, the respective features described in the different embodiments may be arbitrarily combined with each other to constitute other embodiments, and these features should be understood as being applicable to any one embodiment, except for the explicitly contrary descriptions.
Claims (1)
1. The rail beam type thermal centering machine is characterized by comprising a frame, a stabilizing device, a supporting bracket and a centering device, wherein the stabilizing device, the supporting bracket and the centering device are installed in the frame, the frame comprises a rail beam which is horizontally arranged and two supporting pieces which are vertically arranged, two ends of the rail beam are respectively supported on the two supporting pieces, the rail beam is positioned above a centering center line and is parallel to the centering center line, the stabilizing device and the centering device are sequentially arranged along the centering center line and are all installed on the rail beam, the supporting bracket is correspondingly arranged below the stabilizing device and is lower than the centering center line, and the rail beam type thermal centering machine further comprises a distance adjusting device which can adjust the distance between the supporting bracket and the rail beam;
the distance adjusting device is a bracket lifting device arranged below the supporting bracket;
the support bracket comprises a plurality of brackets which are arranged at intervals, the brackets are parallel to the rail beam and are linearly arranged, the bracket lifting device comprises a plurality of lifting units, one lifting unit is arranged below each bracket, the lifting units drive the corresponding brackets to ascend and descend, each lifting unit comprises a bracket seat, a crank, a swing arm, a lifting seat and a connecting rod, the upper end of the crank is fixedly connected with one end of the swing arm, the fixedly connected point of the crank and the swing arm is hinged to the bracket seat, the other end of the swing arm is hinged to the upper end of the lifting seat, the lower end of the lifting seat is hinged to one end of the connecting rod, the other end of the connecting rod is hinged to the bracket seat, the upper end of the lifting seat is fixedly connected with the bracket, the driving unit comprises a fixing seat, a lifting hydraulic cylinder and a pull rod parallel to the centering rod, the hydraulic cylinder is hinged to the fixing seat, the piston rod of the hydraulic cylinder is hinged to one end of the lifting seat, and the piston rod of each lifting cylinder is hinged to the lower end of the lifting rod;
the centering device is movably arranged on the rail beam through a sliding seat, the rail beam comprises a top beam and two side plates which are horizontally arranged, the top beam and the two side plates are both parallel to the centering center line, the cross section of the top beam is in a shape of a Chinese character kou, the top edges of the two side plates are fixedly connected with two side edges of the bottom surface of the top beam respectively, the sliding seat is arranged between the two side plates, each side plate is provided with a guide rail protruding inwards, the guide rail is parallel to the centering center line, the side wall of the sliding seat is provided with a rail groove which is correspondingly matched with the guide rail on the same side, and the guide rail extends into the corresponding rail groove; the centering device comprises a pushing hydraulic cylinder, a guide rod, a guide seat and a tip cone, wherein the guide seat and the pushing hydraulic cylinder are both fixedly arranged below the sliding seat, the guide seat is provided with a through cavity arranged along the centering center line, the guide rod penetrates through the through cavity and can reciprocate along the centering center line, one end of the guide rod, which faces towards the stabilizing device, is provided with the tip cone, one end of the guide rod, which faces away from the stabilizing device, is fixedly connected with a piston rod of the pushing hydraulic cylinder, a positioning groove which is arranged along the centering center line is further formed in the side wall of the guide rod, a pin hole which is correspondingly matched with the positioning groove is formed in the outer wall of the guide seat, a guide pin penetrates through the pin hole and is inserted into the positioning groove, and the guide pin is detachably connected with the guide seat;
the stabilizing device comprises two fixed pressing pieces and a movable pressing piece, the movable pressing piece is fixedly arranged on the sliding seat, and the two fixed pressing pieces are sequentially and fixedly arranged on the rail beam along the axial direction of the rail beam;
the top end of the sliding seat is provided with a chain running gear, the chain running gear comprises a chain, a tensioning wheel, a driving sprocket and four driven sprockets, the tensioning wheel, the driving sprocket and the four driven sprockets are all arranged on the top beam through sprocket supports, the chain is tensioned on the outer sides of the driving sprocket and the four driven sprockets, the tensioning wheel is positioned on the outer side of the chain, the chain is further provided with a chain end support, and the chain end support is fixedly connected with the sliding seat;
the chain running device is also provided with a slide seat positioning mechanism, and the slide seat positioning mechanism is a ratchet slide block positioning mechanism;
the ratchet slide block positioning mechanism comprises a ratchet bar, a locking slide block, a pulling rod, a locking hydraulic cylinder and a connecting block, wherein the ratchet bar is arranged at the lower edge of the top beam along the axial direction of the top beam, the locking hydraulic cylinder is arranged on the sliding seat, and one end of the pulling rod is hinged with the locking slide block; the other end of the pulling rod is hinged to the connecting block, and the connecting block is fixed on the sliding seat;
and a baffle is further arranged in the frame, the baffle is fixedly arranged on the support piece close to one side of the fixed pressing piece of the stabilizing device, and the centering center line vertically penetrates through the baffle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710637744.8A CN107350288B (en) | 2017-07-31 | 2017-07-31 | Rail beam type thermal centering machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710637744.8A CN107350288B (en) | 2017-07-31 | 2017-07-31 | Rail beam type thermal centering machine |
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| CN107350288A CN107350288A (en) | 2017-11-17 |
| CN107350288B true CN107350288B (en) | 2023-07-25 |
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| CN108006202A (en) * | 2017-12-27 | 2018-05-08 | 北京京诚之星科技开发有限公司 | A kind of gear-box |
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| IT1088731B (en) * | 1977-12-01 | 1985-06-10 | Innocenti Santeustacchio Spa | INTRODUCTION AND PUSHING DEVICE OF A BAR IN A PERFORATOR-LAMINATE |
| JPH11123434A (en) * | 1997-10-16 | 1999-05-11 | Ishikawajima Harima Heavy Ind Co Ltd | Method and device for guiding rolled stock with its sides |
| US5970772A (en) * | 1999-03-01 | 1999-10-26 | Kotobuki Sangyo Kabushiki Kaisha | Positioning control device for guide apparatus |
| CN100588474C (en) * | 2008-11-21 | 2010-02-10 | 太原市通泽成套设备有限公司 | Compound drag links and operation device thereof |
| CN101554634A (en) * | 2009-05-20 | 2009-10-14 | 太原重工股份有限公司 | Mobile hot centering machine |
| CN102451840A (en) * | 2010-10-27 | 2012-05-16 | 扬州创奇钢管机械有限公司 | Cold core setting machine |
| CN202137187U (en) * | 2011-06-27 | 2012-02-08 | 无锡西姆莱斯石油专用管制造有限公司 | Perforator background support roller elevating structure |
| CN204307946U (en) * | 2014-12-09 | 2015-05-06 | 攀钢集团成都钢钒有限公司 | Double-end heating centring machine |
| CN204503756U (en) * | 2014-12-11 | 2015-07-29 | 太原磬泓机电设备有限公司 | A kind of roll seamless steel tube system |
| CN104741380B (en) * | 2015-04-04 | 2018-01-23 | 内蒙古包钢钢联股份有限公司 | Pipe hot centering machine and hot spotting device |
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Effective date of registration: 20220207 Address after: 100176 room l1-1018, 7 Jian'an street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Applicant after: CERI Long Product Co.,Ltd. Applicant after: MCC CAPITAL ENGINEERING & RESEARCH Inc.,Ltd. Address before: 100176 No.7 Jian'an street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Applicant before: CERI TECHNOLOGY Co.,Ltd. Applicant before: MCC CAPITAL ENGINEERING & RESEARCH Inc.,Ltd. |
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