CN113319133A - Guide base - Google Patents

Abstract

The invention provides a guide base, which is characterized in that a guide base body arranged at the inlet side or the outlet side of a rolling mill is provided with a track, the extending direction of the track is parallel to the traveling direction of a rolled piece, and the inlet guide and the outlet guide displace along the direction limited by the track. The guide and guard base is arranged between the upstream rolling mill, the midstream rolling mill or the mid-stream rolling mill and the downstream rolling mill, or can be arranged at the inlet side of the upstream rolling mill or the outlet side of the downstream rolling mill, a track is arranged on the guide and guard base body, and when the guide and guard is in place, installed or disassembled and moved, the guide and guard can be vertically lifted by using lifting equipment to be separated or fall onto the guide and guard base body, and the process is free from any environmental blockage or obstruction; the guide and guard directly falls on the track, so that the connection with the lifting equipment can be released, the guide and guard is moved to the inlet or the outlet of the roller along the track, and the problems that the guide and guard with the weight of two tons or even more needs to be lifted by the lifting equipment to bear the weight and needs to be displaced to the inlet or the outlet of the roller are thoroughly solved.

Description

Guide base

Technical Field

The invention relates to a guide system of a rolling mill, in particular to a guide system of a rolling mill for rolling bars.

Background

The bar is usually rolled by a rolling mill during production, and a guide is usually arranged at the inlet side and the outlet side of the rolling mill, and the guide performs the restraining action of guiding and protecting materials to be rolled so as to guide the materials to be rolled into a rolling roller and guide the rolled materials to be led out of the rolling area of the rolling roller.

The rolling mill for rolling incoming billets with the cross-sectional size of 200x200mm or even larger can roll round steel or steel pipes with the outer diameter of 350mm or even larger, the distance between the upstream rolling mill and the downstream rolling mill is very limited, because the stroke speed of the rolling raw material is slow, the overlarge distance between the rolling mills is not beneficial to the upstream rolling mill to quickly reach the downstream rolling mill, the phenomenon of obvious temperature reduction can occur when the material is conveyed for too long time in the material conveying process between the upstream rolling mill and the downstream rolling mill, the rolling quality is influenced, and the surface of the rolling material is damaged and the abrasion of the guide groove of the transition section is accelerated through the sliding friction of the guide groove of the transition section which is too long; meanwhile, because the roll diameter of the rolling mill roll reaches 1000mm or even larger, the difficulty of attaching the rolling guide to the rolling mill roll is very high, because the guide weight of the rolling mill roll with the specification reaches 2 tons, the guide with the weight of 2 tons is hoisted between an upstream rolling mill and a downstream rolling mill or to the feeding side of the upstream rolling mill and the discharging side of the downstream rolling mill, which is relatively easy to realize, and the guide is horizontally displaced by about 1000mm or even more generously and can be conveyed to the material guiding and guiding area of the rolling mill, so the difficulty cannot be imagined, namely, the difficulty cannot be reached by manpower; in addition, it is difficult to accurately adjust the position relationship between the guide and the two rollers; the difficulty of disassembling the guide and guard is also difficult when the roll needs to be replaced. In order to solve the technical problems, the prior art adopts a scheme that simple guide grooves are welded on roller frames on the feeding side and the discharging side of a rolling mill to serve as guides, namely the simplest sliding guides, so that the product quality cannot be further improved, in other words, a rolled finished product can only be used as a raw material of a downstream enterprise or a downstream process, in addition, the simple sliding guides have the problem of abrasion and replacement, and the centering problem during replacement is faced again.

Numerous and positive efforts have been made by the skilled person in the art with regard to the installation of guides and guards.

The invention discloses an invention patent named 'installation structure of a guide in a bar continuous rolling guide device' (document No. CN 2501603Y-hereinafter referred to as document 1), and the purpose of the document 1 is to not only meet the requirement of positioning and firm connection between the guide and a base, but also have the performance of easily realizing micro-adjustment of the installation position of the guide on the base, thereby overcoming the defects of the prior art. The specific disclosed scheme comprises a guide rail and a guide rail groove respectively arranged on the connecting surface of the guide and the base, and a fine adjustment mechanism, wherein the fine adjustment mechanism comprises a screw rod 5, a nut 6 and a positioning key 7, the nut is positioned in a chute 9 of the base 2, the positioning key is fixed on the nut and is matched with a key groove 8 arranged on the bottom surface of the guide and the base 1, the screw rod is positioned in the nut, and one end of the screw rod extends out of the base.

Document 1 is to add a fine adjustment and positioning device along the axial direction of a roller on the basis of the sliding connection between the guide and the base, so that the guide can be fixedly positioned on the base, and the installation position of the guide on the base can be conveniently adjusted, thereby overcoming the defects of the prior art that the guide is easy to slide or cannot be adjusted. As can be seen, document 1 solves the problem of fixing and fine adjustment of the guide, and the direction of positioning is the rolling direction, and the direction of fine adjustment is the horizontal direction perpendicular to the rolling direction. The above-mentioned solution does not relate to the problem of displacement of the guide and guard of large size and heavy weight, in other words, how to transfer the guide and guard to the base, in other words, document 1 does not disclose how to displace the guide and guard to the position of the feeding opening of the roll.

The name "a vertical rolling mill entrance shared induction device" (document No. CN102728628B, hereinafter referred to as document 2), and the vertical rolling mill for rolling a square and round steel product according to document 2 generally refers to a large-sized billet rolling facility. The problems faced by the document 2 include that the friction between the rolled piece and the guide device is sliding friction, and the guide device has no commonality, i.e., the roll pass guide cavity is not adjustable or is difficult to adjust.

The guide device provided in document 2 can move the billet in the space formed by the upper and lower support arms and the side baffles of the support arms, and guide the billet to be correctly bitten into the vertical rolling mill by the limiting action of the guide roller and the side baffles. The guide plate body and the vertical direction are positioned by the sliding groove on the fixing bracket, the vertical central line of the guide roller is aligned to a rolling line in the horizontal direction as a standard, and the lower working surface of the lower supporting arm guide roller and the lower working surface of the chute between the rolling mills in the vertical direction are aligned as a standard. When the rolling specification is changed, the lower supporting arm is fixed, the opening degree adjusting handle is manually rotated, the upper supporting arm is lifted under the driving of the adjusting screw rod, and the upper guide roller is driven to be lifted to meet the requirement of a new specification, so that the new specification can be rolled without replacing the guide device. The position of the guide plate body can be adjusted along the rolling line direction, the upper and lower support arms with guide rollers on the guide plate body extend into the space between the two rollers arranged on the inner rack during steel rolling, the guide plate body moves backwards during roller changing, the support arms together with the guide rollers withdraw from the rollers and the housing of the inner rack, and the horizontal movement of the inner rack is not hindered at all, so that the roller changing is not required to change the guide and guard device, the roller changing time can be obviously shortened, the operation rate of a rolling mill and the equipment productivity of the whole rolling line are improved, the service life of the guide and guard device is greatly prolonged, the reserve amount and expense of spare parts are reduced, and the production cost is reduced. The same problem of document 2 as document 1 is that it does not relate to how the guide and guard device reaches the position of the drawing because the suspension of the lower bracket arm 1 and the upper bracket arm 3 must be avoided from the mill stand before being hung on the fixed bracket 7, and the travel of the translation lead screw 8 driving the screw nut 10 and the limiting opening shoe 11 is significantly shorter than the length of the suspension section of the lower bracket arm 1 and the upper bracket arm 3, that is, the guide and guard device must be horizontally displaced towards the feeding port of the roll to fall on the fixed bracket 7 when falling to the height of the fixed bracket 7, which is very difficult for the device weighing two tons, and the lower bracket arm 1 is fixed, and the upper bracket arm 3 moves up and down, resulting in high rolling center, i.e. the rolling line floats up and down, and is difficult to meet or not meet the requirements of the continuous rolling process.

The name is 'a novel structure for fixing a guide cross beam' (the document number is CN210045766U, hereinafter referred to as document 3), document 3 discloses that a left fixing structure and a right fixing structure are welded and fixed on a mill housing, the purpose is to fix the guide cross beam 10, the guide cross beam 10 is tied by a steel wire rope during specific hoisting, a crown block is instructed to lift the guide cross beam, the proper position is adjusted, the T-shaped screw is tightly attached to the fixing structure, a T-shaped screw is placed at a T-shaped notch on the upper portion of the guide cross beam in the picture 8 and is matched with a U-shaped bayonet in the left and right fixing structure, a nut is screwed on the T-shaped screw, and the guide cross beam is temporarily fixed. It is clear that document 3 does not relate to the mounting and dismounting of the guide and guard device, but only to the mounting and fixing of the guide and guard cross member 10 for fixing the guide and guard device.

In addition, the stand or the base for fixing the guide in the above-mentioned prior documents 1, 2, and 3 is fixed to the mill housing or the stand. The base 2 as in document 1 is fixed to a fixed guide beam frame 13 in the guide device; the fixing bracket 7 in document 2 is integrally T-shaped and is assembled by a frame body 13 and two lug plates 12, the two lug plates 12 are respectively connected to two ends of the frame body 13 by four bolts, and the two lug plates 12 are respectively fixed on the upright posts of the housing memorial archways outside the vertical rolling mill; the guide beam 10 in document 3 is also fixed to the left and right fixed structures welded to the mill housing.

Disclosure of Invention

The invention aims to provide a guide base suitable for rolling bars with large size and specification, so as to improve the convenience of installing the guide in place and simplify the dismounting operation of the guide and the rolling mill.

In order to realize the purpose, the invention adopts the following technical scheme: the utility model provides a guide and guard base which characterized in that: the guide and guard base body arranged on the inlet side or the outlet side of the rolling mill is provided with a track, the extension direction of the track is parallel to the traveling direction of a rolled piece, and the inlet guide and guard and the outlet guide and guard are displaced along the direction limited by the track.

In the scheme, the guide base is arranged between the upstream rolling mill, the midstream rolling mill or the downstream rolling mill, or can be arranged at the inlet side of the upstream rolling mill or the outlet side of the downstream rolling mill, the guide base body is provided with a track, and when the guide is in place, installed or disassembled and moved, the guide can be vertically lifted by using lifting equipment to be separated or fall onto the guide base body, and the process is free from any environmental blockage or obstruction; the guide and guard directly falls on the track, at the moment, the connection with a lifting device can be removed, the guide and guard is moved to the inlet or the outlet of the roller along the track, the difficulty that the guide and guard with the weight of two tons or even more needs to be lifted by the lifting device to bear the weight and needs to be displaced to the inlet or the outlet of the roller is thoroughly solved, and the problem that the guide and guard with the large heavy load can be positioned in place at the same time in a suspension state is thoroughly solved.

Drawings

FIGS. 1, 2, and 3 illustrate a rolling mill system to which the present invention is applicable;

FIGS. 4 and 5 are schematic perspective views of the present invention;

FIGS. 6, 7, 8 and 9 are schematic perspective views of the drag mechanism of the present invention;

FIG. 10 is a schematic perspective view of the hanger of FIG. 8;

fig. 11, 12 and 13 are schematic perspective views of guides and guards cooperating with the related dragging mechanism of the present invention, respectively.

Detailed Description

The guide and guard system provided by the invention is suitable for a continuous rolling system consisting of an upper rolling mill A, B, C, a middle rolling mill A, B, C and a lower rolling mill A, B, C, in particular to a bar stock with the roller diameter of 1m, the blank to be rolled being a square round stock with the diameter of 200mm x200mm and larger, and the section diameter of a rolled piece being 75-350 mm and even larger. As shown in fig. 1, 2 and 3, there are guide bases between the upstream and mid-stream rolling mills A, B or the intermediate and downstream rolling mills B, C, and guide bases arranged at the front end of the upstream rolling mill a or the rear end of the downstream rolling mill C, the extension direction of the rail 20 on the guide base body 10 is parallel to the rolling travel direction of the rolling stock, the arrow direction in the figure is the rolling travel direction of the rolling stock, the inlet guide and the outlet guide of the upstream, mid-stream and downstream rolling mills A, B, C are displaced in the direction defined by the rail and locked in position at the inlet or outlet of the upstream, mid-stream and downstream rolling mills A, B, C by locking mechanisms, which may be provided at the end of the guide base body 10 or on a fixed base support independent of the guide base body 10 as the case may be.

As shown in fig. 4 and 5, the guide base body 10 arranged on the inlet side or the outlet side of the upper, middle and lower rolling mills A, B, C has a rail 20, the extension direction of the rail 20 is parallel to the traveling direction of the rolled material, and the inlet guide and the outlet guide are displaced in the direction defined by the rail.

In the above scheme, the guide and guard base body 10 is provided with a rail 20 for receiving the guide and guard, the entrance guide and guard of the corresponding rolling mill are lifted away or fall on the rail 20 of the guide and guard base body 10 by a crane or a hoisting device, the guide and guard only moves up and down in the process, the operation is very convenient, the guide and guard positioned on the rail 20 can move to or away from the entrance or exit of the rolling mill along the rail 20, when the guide and guard moves to the entrance or exit of the rolling mill and is aligned with the rolling notch on the roller, the guide and guard position is locked by a locking mechanism, the rolling operation can be implemented, when the locking constraint applied to the guide and guard by the locking mechanism is released, the guide and guard can be dragged to move to the front side or the rear side of the rolling mill frame, because the lifting position of the guide and guard is at the avoiding position with the rolling mill frame, the crane device is convenient to hoist the guide and guard is received and guided by the rail 20 when being pushed or moved out to the rolling mill, the hoisting equipment is in an idle state, so the process of displacement guide along the track 20 is very convenient to operate.

The guide base body 10 is positioned on a transverse rail 30 arranged on a foundation, and the direction of the transverse rail 30 is a horizontal direction perpendicular to the traveling direction of rolled pieces. Preferably, the guide base is located on a transverse rail 30 disposed on the base, and the catch mechanism locks the position of the guide base body 10 on the transverse rail 20. The transverse rail 30 has at least three functions, one is that when the guide base body 10 moves along the transverse rail 30, the guide can be moved transversely to the position where the guide is opposite to the rolling notch on the roller, namely, the guide can be adjusted along the axial direction of the roller; secondly, because the position between the rolling stands is very limited, the guide base body 10 is displaced to the side of the rolling mill, the process of lifting the guide is very safe, and the interference and collision phenomena of the guide which swings or shakes and the rolling stands or other auxiliary equipment in the lifting process can be avoided; thirdly, two sets of rails 20 can be arranged on the guide base body 10, and the function of arranging the two sets of rails 20 will be described in the following.

The number of the tracks 20 on the guide base body 10 is one or two, and when the number of the tracks 20 is two, the two sets of the tracks 20 are arranged in parallel at intervals.

When the distance between the upstream rolling mill A, B and the midstream rolling mill A, B is greater than or equal to the sum of the lengths of the upstream rolling mill outlet guide a and the midstream rolling mill inlet guide b, the rails 20 of the guide base body 10 arranged between the upstream rolling mill A, B and the midstream rolling mill inlet guide b are in one group, and the upstream rolling mill outlet guide a and the midstream rolling mill inlet guide b are located on the same group of rails 20. The present preferred embodiment is to set the preferred rail 20 of the guide base body 10 in consideration of the size of the space between the upstream and midstream rolling mills A, B. The meaning of a group of rails means that two guide rails arranged at intervals form a group, so that the outlet guide a of the upstream rolling mill and the inlet guide B of the midstream rolling mill are ensured to be placed on the same rail 20 and naturally positioned on the same rolling path position, and the transverse position of the guide base body 10, namely the axial position of the roller, is properly adjusted, so that the alignment of the outlet guide a of the upstream rolling mill and the rolling notch of the roller of the upstream rolling mill A and the alignment of the inlet guide B of the midstream rolling mill and the rolling notch of the roller of the midstream rolling mill B are simultaneously realized. It should be noted that the state shown in fig. 2 can be regarded as a state where the distance between the upstream and midstream rolling mills A, B is equal to or slightly smaller than the sum of the lengths of the upstream rolling mill outlet guide a and the midstream rolling mill inlet guide b, and the following two sets of rails should be considered as appropriate.

In a case where the distance between the upstream and downstream rolling mills A, B is substantially the same as the above, when the distance between the downstream and intermediate rolling mills A, B is greater than or equal to the sum of the lengths of the downstream and intermediate rolling mill exit guides c and the downstream rolling mill entrance guide d, the rails 20 of the guide base body 10 between the downstream and intermediate rolling mills B, C are grouped, and the downstream and intermediate rolling mill exit guides c and the downstream rolling mill entrance guide d are located on the same group of rails 20.

The above-mentioned rail 20 on the guide base body 10 between the upstream rolling mill A, B and the midstream rolling mill A, B, and the rail 20 on the guide base body 10 between the midstream rolling mill B, C are all set as a group, provided that the size of the distance between the upstream rolling mill A, B and the midstream rolling mill is greater than the sum of the lengths of the upstream rolling mill outlet guide a and the midstream rolling mill inlet guide b, and the distance between the midstream rolling mill B, C and the downstream rolling mill inlet guide d is greater than the sum of the lengths of the midstream rolling mill outlet guide c and the downstream rolling mill inlet guide d, the condition includes two cases, namely the sum of the lengths of the upstream rolling mill outlet guide a and the midstream rolling mill inlet guide b which are arranged on the rail 20 in close proximity, and the sum of the lengths of the midstream outlet guide c and the downstream rolling mill inlet guide d which are arranged on the rail 20 in close proximity; secondly, the outlet guide a of the upstream rolling mill is placed on the track 20 and pushed and positioned to the outlet of the upstream rolling mill A, the distance between the outlet guide a of the upstream rolling mill and the midstream rolling mill B is still larger than or equal to the length of the inlet guide B of the midstream rolling mill, and at the moment, the inlet guide B of the midstream rolling mill can still be directly hoisted to or lifted from the track 20 of the guide base body 10 at the midstream, otherwise, the situation that the inlet guide B of the midstream rolling mill is installed firstly and then the outlet guide a of the upstream rolling mill is installed is also realized; the spacing between the intermediate and downstream rolling mills A, B and the arrangement of the rails 20 of the guide and guard base body 10 between the intermediate and downstream rolling mills disposed therebetween can be determined as described above between the upstream and intermediate rolling mills A, B.

When the distance between the upstream rolling mill A, B and the intermediate rolling mill B, C meets the above conditions, a set of rails can be provided to reduce equipment investment, adjust the span and occupy less space.

The transverse rails 30 are arranged, so that the guide and guard are convenient to adjust along the axial displacement of the rolling mill roller, two groups of rails can be arranged on the guide and guard base body 10, the two groups of rails 20 are arranged in parallel at equal heights, and a scheme with different heights can be selected according to the type of the guide and guard, so that the central line of each guide and guard is positioned on the rolling central line.

A dragging mechanism 40 is arranged below the space between the two guide rails forming each group of tracks 20, and a dragging hook unit connected with the dragging mechanism 40 is used for connecting the guide bottom plate and dragging the guide to move. The dragging mechanism 40 is arranged below the space between the two guide rails forming each group of tracks 20, so that the effective space can be utilized, and the reliability of the fixing of the guide supports can be ensured.

The dragging mechanism 40 comprises a motor 41 and a transmission mechanism connected with the motor 41, a dragging hook unit is arranged on a sliding seat 50 connected with the transmission mechanism, and the sliding seat 50 linearly displaces along a direction parallel to the direction limited by the track 20. This results in the slide 50 being displaced in a defined direction along the rail 20 when it is displaced.

Preferably, the transmission mechanism comprises a lead screw 60 connected with the motor shaft, and the lead screw 60 and the nut hole on the sliding seat 50 form lead screw nut matching. Correspondingly, a chain or belt transmission mechanism may be optionally used to achieve the stable displacement of the slide carriage 50, the transmission mechanism includes a chain transmission mechanism or a belt transmission mechanism connected with a motor shaft, and the slide carriage 50 is connected with a chain or a belt in the chain transmission mechanism or the belt transmission mechanism. In view of the fact that the guide and guard are too heavy, the labor intensity can be greatly simplified by selecting a power mechanism to replace manual pushing and pulling, and a belt, chain or lead screw nut transmission mechanism is selected as a dragging mechanism, so that the maximum displacement stroke can be obtained on the premise that the length of the guide and guard base body 10 between the upstream rolling mill A, B and the middle rolling mill B, C is limited, and the guide and guard can be ensured to be lifted in the widest space area.

Several preferred embodiments of the tow hook unit are described in detail below.

One is as follows: the towing hook unit comprises a lug 51 arranged on a sliding seat (50) connected with the transmission mechanism. As shown in fig. 4, 5 and 6, the bump 51 is generally in the shape of a plate and two parallel plates are arranged, the plate is located in the plumb direction and the plate is parallel to the direction defined by the rail 20, and one bump 51 may be arranged. The function of the projection 51 is to mate with the positioning hole a1 on the bottom plate of the guide a in fig. 11, and the projection 51 moves with the slide carriage 50 to drive the guide a to approach or move away from the rolling mill. In order to ensure the normal displacement of the projection 51 and also ensure that the screw rod 60 is prevented from being adhered by dirt, the invention provides the following preferable scheme that the projection 51 is provided with two strip-shaped holes 11 which are respectively positioned between two guide rails forming a group of tracks 20 and run through from bottom to top, and the rod body of the screw rod 60 is positioned below the strip-shaped plate 12 between the two strip-shaped holes 11. Thus, the normal work of the screw rod can be realized. The towing hook unit of the structure does not need to be separated or separated from the guide and guard a in a normal use state, and only lifts the guide and guard away when the guide and guard needs to be overhauled or replaced. As shown in fig. 2 and 3, the dragging mechanism of the upstream rolling mill inlet guide and the downstream rolling mill outlet guide can adopt the scheme.

The second is that: the towing hook unit comprises a hook 52 arranged on a sliding seat 50 connected with a transmission mechanism, the tail end of a hook handle of the hook 52 is hinged on the sliding seat 50 through a hinged shaft 53, and the shaft core of the hinged shaft 53 is positioned in the horizontal direction perpendicular to the traveling direction of a rolled piece.

Preferably, the slide carriage 50 is provided with hinge seats 54 arranged at intervals in a protruding and standing manner, the tail section of the hook handle of the hook 52 is positioned between the hinge seats 54 and connected by a hinge shaft 53, the hook opening wall 521 of the hook head is positioned on a plumb surface and is vertical to the length direction of the rail 20 when the hook 52 is in a flat state, the cross section of the hook top surface 523 formed by the hook back wall 522 and the hook opening wall 521 is in a minimum wedge shape, and the end surface 541 of the hinge seat 54 adjacent to the hook head is positioned on the plumb surface and is vertical to the length direction of the rail 20. The towing hook unit, namely the hook 52 in the scheme is rotatable, so that the towing hook unit can be conveniently matched with the guide, and not only can the guide be conveniently connected and moved, but also the guide can be conveniently separated from the guide.

As shown in fig. 3, the guide b is separated from the rail 20 where the hook 52 is located in normal operation, and the guide a is engaged with the protrusion 51 and the rail 20 where the protrusion 51 is located. When the convex block 51 drives the guide and guard a to move to the middle position of the track 20, the guide and guard base body 10 transversely moves to the position where the guide and guard b is opposite to the track 20 where the hook 52 is located, the hook 52 can be hung on the guide and guard b and drag the guide and guard b to move, the specific process is that the hook 52 moves towards the guide and guard b firstly, when the hook back wall 522 of the hook 52 is abutted to the guide inclined plane b11 of the transverse plate b1 of the guide and guard b, the hook 52 rotates and the hook head moves upwards, meanwhile, the hook 52 continues to move towards one side of the guide and guard b, when the hook opening wall 521 moves to the inner side of the transverse plate b1, the hook head of the hook 52 falls down from between the longitudinal plates b2 at two sides, and at the moment, the guide and guard b can be dragged to be far away from the roller when the hook 52 reversely moves; when the guide b needs to be pushed to the roller, the guide b moves by pushing the transverse plate b1 by the end face 541.

More preferably, the slide carriage 50 is provided with hinge seats 54 arranged at intervals in a protruding and standing manner, the handles of the two hooks 52 are arranged at a right angle, the intersection of the handles is positioned between the hinge seats 54 and connected by a hinge shaft 53, one of the two hooks 52 is at a low position of a horizontal position, the other hook is at a high position of the vertical position, a hook opening wall 521 of the hook head is positioned on a plumb surface and is vertical to the length direction of the rail 20 in the horizontal position, the section of a hook top surface 523 formed by the hook back wall 522 and the hook opening wall 521 is in a minimum wedge shape, and end surfaces 541 of the hinge seats 54 adjacent to the front and the back are positioned on the plumb surface and are vertical to the length direction of the rail 20. It should be noted that, the scheme of the structure can realize the function of pushing or pulling two guides and guards in two directions.

The third step is that: the slide carriage 50 is provided with a hook plate 55, and the hook plate 55 is provided with a hook opening 551 with an upward opening. In specific implementation, the plate surface of the hook plate 55 is located in the plumb plane and parallel to the direction of the rail 20, and the upper plate edge of the hook plate 55 is notched to form a hook opening 551, as shown in fig. 9. In operation, the hook opening 551 in this example is used for cooperating with a guide and guard shown in fig. 13, which is equivalent to a guide and guard B or a guide and guard c arranged at the inlet or the outlet of the midstream rolling mill B, the end of the bottom plate c1 of the guide and guard c is provided with a block c2, when the block c2 is located in the hook opening 551, the hook opening 551 restricts the block c2 to move together when the slide carriage 50 is connected with the hook plate 55 to move along the rail 20; if the guide c is located at the position shown in fig. 2 and 3, that is, the guide c is located on the fixed guide base 70, when the guide base body 10 is displaced along the transverse rail 30, the hook opening 551 and the block c2 may be displaced from the separated and dislocated state to the mutually accommodated and matched state, or may be separated from the mutually accommodated and dislocated state. The fixed guide base 70 is provided independently of the guide base body 10, and a locking cylinder 71 is provided thereon for locking the guide. It should be noted that the guide still located on the guide base body 10 during operation, a locking cylinder 80 for locking the position of the guide is disposed at the front section or the rear section of the guide base body 10, and the locking force provided by the locking cylinder 80 is perpendicular to the plumb surface of the guide in the traveling direction of the rolled piece, such as the guide a and the guide d are locked by the locking cylinder 80.

In order to protect the exposed parts in the transmission mechanism from being cleaned, the corresponding enclosure needs to be implemented, and because the environment of the rolling field is extremely harsh, the invention provides a means that the shaft body of the screw rod 60 connected with the slide carriage 50 is sleeved or covered with a folding type sheath or shield. In order to show the spindle part, a folding sheath or a cover is not shown, and the enclosure is designed mainly for the dragging mechanism shown in fig. 7, 8 and 9. The screw 60 of the dragging mechanism in fig. 6 is located below the strip 12, and already has a certain protection effect.

As shown in fig. 4 to 9, the motor 41 is disposed beside the guide base body 10 and connected to the screw rod 60 via the coupling 42 and the speed reducing mechanism 43. The motor 41 is arranged beside the guide base body 10, so that the screw rod 60 can be made as long as possible under the condition that the length of the guide base body 10 is limited.

The guide base body 10 is provided with a positioning support 13, and the positioning support 13 is used for positioning and supporting the guide groove 90, as shown in fig. 2. After the two ends of the guide base body 10 are arranged with the guide, the two guides are spaced at a proper distance, and the guide groove 90 is arranged to realize the complete connection of the upstream and downstream strokes.

Finally, it should be noted that the present invention is applicable to the objective constraints of the rolling mill system shown in fig. 1, 2 and 3. The shape of the stand of the midstream rolling mill B is different from that of the upstream and downstream rolling mills A, C, that is, the lower sections of the stand columns 1 at the two ends of the midstream rolling mill B extend to the front and rear bottom cross beams 2 and 3 in a curved manner forward and downward and backward, and the distance between the stands of the upstream and midstream rolling mills A, B and the stands of the midstream rolling mill B, C is very limited, and in combination with fig. 2, the length of the guide is only slightly greater than that of an attached single guide, and the requirement that the length is greater than the sum of the lengths of two adjacent guides cannot be met, and the installation of the guide cannot be realized by adopting the scheme that the guide base is provided with the double rails arranged in parallel on the guide base body 10. In addition, a fixed guide base 70 is arranged at the front bottom cross beam 2 of the frame of the midstream rolling mill B, a midstream rolling mill inlet guide B on a rail 20 on a guide base body 10 between the upstream rolling mill A, B and the midstream rolling mill is moved to the fixed guide base 70, at this time, the midstream rolling mill inlet guide B is separated from the guide base body 10, the guide base body 10 is displaced to a position where the upstream rolling mill outlet guide a is axially opposite to a corresponding rolling notch of the upstream rolling mill a along a transverse rail 30, and the power for driving the guide base body 10 to displace is an oil cylinder 100, and can also be other traction modes such as a lead screw/chain.

And then moving the outlet guide a of the upstream rolling mill to approach the rolling notch of the roller, wherein the outlet guide a of the upstream rolling mill still keeps the connection relation with the guide base body 10 when moving in place, namely the outlet guide a and the guide base body are not completely separated.

Claims (18)

1. The utility model provides a guide and guard base which characterized in that: the guide base body (10) arranged at the inlet side or the outlet side of the rolling mill is provided with a track (20), the extension direction of the track (20) is parallel to the traveling direction of a rolled piece, and the inlet guide and the outlet guide are displaced along the direction limited by the track.

2. The guide and guard base of claim 1, wherein: the guide base body (10) is positioned on a transverse rail (30) arranged on a foundation, and the direction of the transverse rail (30) is the horizontal direction perpendicular to the advancing direction of rolled pieces.

3. The guide and guard base of claim 1 or 2, wherein: one or two sets of rails (20) are arranged on the guide base body (10), and when the two sets of rails (20) are arranged, the two sets of rails (20) are arranged in parallel at intervals.

4. The guide and guard base of claim 3, wherein: the two groups of tracks (20) are arranged in parallel at equal height and interval.

5. The guide and guard base of claim 3, wherein: a dragging mechanism (40) is arranged below the two guide rails forming each group of tracks (20), and a towing hook unit connected with the dragging mechanism (40) is used for connecting the guide bottom plate and dragging the guide to move.

6. The guide and guard base of claim 3, wherein: the dragging mechanism (40) comprises a motor (41) and a transmission mechanism connected with the motor (41), a sliding seat (50) connected with the transmission mechanism is provided with a dragging hook unit, and the sliding seat (50) linearly displaces along a direction parallel to the limit direction of the track (20).

7. The guide and guard base of claim 6, wherein: the transmission mechanism comprises a screw rod (60) connected with a motor shaft, and the screw rod (60) and a nut hole on the sliding seat (50) form screw rod nut matching.

8. The guide and guard base of claim 6, wherein: the transmission mechanism comprises a chain transmission mechanism or a belt transmission mechanism connected with a motor shaft, and the sliding seat (50) is connected with a chain or a belt in the chain transmission mechanism or the belt transmission mechanism.

9. The guide and guard base of claim 5, wherein: the towing hook unit comprises a lug (51) arranged on a sliding seat (50) connected with the transmission mechanism.

10. The guide and guard base of claim 5, wherein: the towing hook unit comprises a hook (52) arranged on a sliding seat (50) connected with the transmission mechanism, the tail end of a hook handle of the hook (52) is hinged on the sliding seat (50) through a hinged shaft (53), and the shaft core of the hinged shaft (53) is positioned in the horizontal direction perpendicular to the advancing direction of a rolled piece.

11. The guide and guard base of claim 9, wherein: the two convex blocks (51) are respectively arranged in the strip-shaped holes (11) which are through up and down and are positioned between the two guide rails forming the group of tracks (20) and are arranged in a protruding mode from bottom to top, and the rod body of the screw rod (60) is positioned below the strip-shaped plate (12) between the two strip-shaped holes (11).

12. The guide and guard base of claim 10, wherein: the sliding seat (50) is provided with hinge seats (54) which are arranged at intervals in a protruding and standing mode, the tail section of a hook handle of the hook (52) is positioned between the hinge seats (54) and is connected through a hinge shaft (53), a hook opening wall (521) of the hook head is positioned on a plumb surface and is vertical to the length direction of the track (20) when the hook (52) is in a horizontal state, the cross section of a hook top surface (523) formed by a hook back wall (522) and the hook opening wall (521) is in a minimum wedge shape, and an end surface (541) of the plate seat (54) close to the hook head is positioned on the plumb surface and is vertical to the length direction of the track (20).

13. The guide and guard base of claim 10, wherein: the sliding seat (50) is provided with hinge seats (54) which are arranged at intervals in a protruding and vertical mode, the hook handles of the two hooks (52) are arranged at a right angle, the intersection position of the hook handles is located between the hinge seats (54) and is connected through a hinge shaft (53), when one of the two hooks (52) is located at a horizontal low position, the other hook (52) is located at a vertical high position, when the hook head is located at a horizontal state, a hook opening wall (521) of the hook head is located on a plumb surface and is perpendicular to the length direction of the rail (20), the cross section of a hook top surface (523) formed by the hook back wall (522) and the hook opening wall (521) is in a minimum wedge shape, and the front end surface (541) and the rear end surface (541) of the hinge seat (54) are close to the plumb surface and are perpendicular to the length direction of the rail (20).

14. The guide and guard base of claim 10, wherein: the sliding seat (50) is provided with a hook plate (55), and the hook plate (55) is provided with a hook opening (551) with an upward opening.

15. The guide and guard base of claim 12, wherein: and a folding sheath or a folding protective cover is sleeved or covered on the rod body of the screw rod (60) connected with the sliding seat (50).

16. The guide and guard base of claim 6, wherein: the motor (41) is arranged at the side of the guide base body (10) and is connected with the screw rod (60) through the coupling (42) and the speed reducing mechanism (43).

17. The guide and guard base of claim 1 or 2, wherein: the guide base body (10) is provided with a positioning support (13), and the positioning support (13) is used for positioning and supporting the guide groove.

18. The guide and guard base of claim 1 or 2, wherein: the front section or the rear section of the guide base body (10) is provided with a locking unit for locking the guide position, and the locking force provided by the locking unit is vertical to the plumb surface of the travel direction of the rolled piece on the guide.

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