Double-point-position transverse moving trolley and staggered transposition method

Abstract

The application provides a double-point horizontal moving trolley and staggered transposition method, which comprises a driving sprocket mechanism, a driven sprocket mechanism, a roller chain, a rolling mill base, a plurality of wheel devices, a positioning detection system, a trolley base, a plurality of guide rail supports, a plurality of upper chain guides and a plurality of lower chain guides; the driving sprocket mechanism comprises a driving sprocket; the driven sprocket mechanism comprises a driven sprocket; the right side of the roller chain is engaged with the driving sprocket, and the left side is engaged with the driven sprocket; the rolling mill base comprises a rolling mill base one and a rolling mill base two, which are respectively used for storing rolling mills to be repaired and repaired rolling mills. The application is cleverly designed for the double-point horizontal moving trolley, so that the whole production process layout is more reasonable, the work efficiency can be effectively improved, the occupied area is not increased, and the cost input is effectively controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of metallurgical industry, and in particular to a double-point transverse trolley and a staggered transposition method. Background Art

[0002] Transverse trolleys are widely used in the metal rolling technology field of the metallurgical industry to transport rolling mills between offline maintenance workshops. When a rolling mill requires maintenance, it is transported from the online rolling workshop (hereinafter referred to as the online workshop) to the offline maintenance workshop (hereinafter referred to as the offline workshop) using a transverse trolley. After the mill is repaired, it is transported back from the offline workshop to the online workshop.

[0003] In traditional technology, only one set of rolling mill bases is set above the 1# transverse trolley 3'. The round-trip transportation of the rolling mill between the offline and online workshops is achieved through the following technical means:

[0004] 1) The rolling mill to be repaired is transported from the online workshop to the offline workshop (the transportation route is O1- O2- O3- O4- O5): First, the rolling mill to be repaired is transported from the online workshop to the offline workshop with the help of the over-span transport vehicle 1', passes through the factory columns on both sides, and stops at the O1 position close to the right side of the over-span transport vehicle 1'; secondly, the rolling mill is pulled back from the O1 position to the O2 position of the 1# transverse trolley 3' by the 1# push-pull cylinder 2'; thirdly, the 1# transverse trolley 3' is driven by the active sprocket mechanism to transport the rolling mill from the O2 position to the O3 position, and the vertical distance between the O2 position and the O3 position is L1; fourthly, the rolling mill is pulled back from the O3 position of the 1# transverse trolley 3' to the O4 position of the 2# transverse trolley 4' by the 2# push-pull cylinder 5'; fifthly, the 2# transverse trolley 4' is driven by the active sprocket mechanism to transport the rolling mill from the O4 position to the O5 position for offline repair of the rolling mill.

[0005] 2) The repaired rolling mill is transported from the offline workshop to the online workshop (the transportation route is O5- O4- O3- O2- O1), which is exactly the opposite of the route from the online workshop to the offline workshop, and will not be repeated here.

[0006] Under traditional transportation technology, the rolling mill to be repaired can only be transported from the online workshop to the offline workshop (transportation route is O1-O2-O3-O4-O5) after a series of operations. Only then can the repaired rolling mill proceed to the next stage of the transfer process, that is, from the offline workshop to the online workshop (transportation route is O5-O4-O3-O2-O1). When the repaired rolling mill is transported to the online workshop, the waiting time is long and production cannot be resumed in a faster time. The overall technical solution is time-consuming and inefficient, which has a certain impact on the production rhythm.

[0007] In order to solve the shortcomings of traditional technical solutions, some steel mills have made the following improvements and optimizations to the technical solutions: two rows of parallel cross-transport vehicles 1' and 1# push-pull cylinders 2' are set up, and they are transported with the help of transverse trolleys to meet the needs of the production process. First, the rolling mill to be repaired is transported from the online workshop to the offline workshop with the help of the first row of cross-span transport vehicles 1', passes through the factory columns on both sides, and stops at the O1 position on the right side of the first row of cross-span transport vehicles 1'; secondly, the repaired rolling mill is transported from the offline workshop to the online workshop, and the transportation route passes through O5- O4- O3- O2 in sequence, and stops at the O1 position on the right side of the second row of cross-span transport vehicles 1', and then is transported to the online workshop by the second row of cross-span transport vehicles 1' to quickly resume production; thirdly, the rolling mill to be repaired starts from the O1 position of the first row of cross-span transport vehicles 1', continues the subsequent transportation route O2- O3- O4- O5, and after arriving at the offline maintenance station, the rolling mill is subjected to offline maintenance.

[0008] By adopting the above technical solution (compared with traditional technology), the repaired rolling mill can start the transportation task as soon as possible, with the top priority of ensuring the rapid resumption of production. The overall technical solution takes less time and is more efficient, meeting the requirements of production rhythm and workshop capacity.

[0009] However, this technical solution also has the following limitations: 1) Due to the addition of a row of over-the-span transport vehicles 1', the plant space and equipment capital investment are also increased accordingly, which invisibly increases the cost investment; 2) At present, the 1# transverse trolley 3' that carries such heavy materials (taking the rolling mill as an example) is mainly driven by an electric motor. Since the rolling mill and the transverse base themselves have a large weight and a large overall inertia, it is difficult to achieve precise positioning. Manual control and repeated adjustments are required to make the rolling mill base of the transverse trolley reach the required point.

[0010] The current positioning technology mainly uses mechanical limit blocks, which have the following disadvantages: the limit blocks are fixedly set at the end of the running track and are only suitable for the lateral movement of a single-row cross-span transport vehicle 1'. However, this method is not applicable when switching between two rows of cross-span transport vehicles 1'. The limit blocks need to be manually opened each time, and after aligning with the corresponding points, the limit blocks need to be manually locked, which is cumbersome to operate.

[0011] Therefore, there is an urgent need to develop a dual-point transverse trolley and a staggered position exchange method to solve the practical problems existing in the existing technology, such as the long transfer process, high capital cost investment, and difficulty in accurate positioning. Summary of the Invention

[0012] In response to the technical problems raised above, a dual-point transverse trolley and a staggered transposition method are provided.

[0013] The technical means adopted in the present invention are as follows:

[0014] A double-point transverse trolley, comprising: a driving sprocket mechanism, a driven sprocket mechanism, a roller chain, a rolling mill base, multiple sets of wheel devices, a positioning detection system, a trolley base, multiple sets of guide rail brackets, multiple sets of chain upper guide rails and multiple sets of chain lower guide rails; the driving sprocket mechanism is installed on the foundation, including a driving sprocket; the driven sprocket mechanism is installed on the trolley base, including a driven sprocket; the driving sprocket mechanism and the driven sprocket mechanism are located on both sides of the trolley base, and the trolley base is fixed to the foundation; the right side of the roller chain is engaged with the driving sprocket, and the left side is engaged with the driven sprocket; the upper and lower sections of the roller chain are supported by multiple sets of chain upper guide rails and chain lower guide rails respectively, and the upper and lower chain upper guide rails and chain lower guide rails facing each other are a group; the multiple sets of guide rail brackets are fixed on the trolley base at intervals; the rightmost group One side of the chain upper guide rail and the chain lower guide rail is connected to the active sprocket mechanism, and the other side is connected to a group of guide rail brackets; one side of the leftmost group of chain upper guide rail and chain lower guide rail is connected to the driven sprocket mechanism, and the other side is connected to a group of guide rail brackets; a group of chain upper guide rail and chain lower guide rail is connected between two adjacent groups of guide rail brackets; the multiple groups of wheel devices are installed on the trolley base in parallel and at intervals, and wheels are provided on both sides of each group of wheel devices, the rolling mill base is connected to the roller chain, and the rolling mill base is slidably connected to the wheels of the multiple groups of wheel devices; the rolling mill base includes a rolling mill base 1 and a rolling mill base 2, which are used to store the rolling mill to be repaired and the repaired rolling mill respectively; the center line distance between the rolling mill base 1 and the rolling mill base 2 is L2, the maximum lateral movement distance of the rolling mill base 1 and the rolling mill base 2 is L3, and L3= L1+ L2; the two groups of positioning detection systems are arranged at intervals, and each group of positioning detection systems is arranged on the trolley base and the rolling mill base, and is used to position the movement of the rolling mill base one and the rolling mill base two; by driving the active sprocket mechanism, the roller chain is driven to move by the active sprocket, and the active sprocket, the roller chain, and the driven sprocket form a chain transmission, which jointly pulls the rolling mill base to move above the wheel of the wheel device, and finally realizes multiple alignment operations of the center lines of the rolling mill base one, the rolling mill base two and the 1# push-pull cylinder and the 2# push-pull cylinder. Through the staggered replacement of the rolling mill base one and the rolling mill base two, the transfer function of the two rolling mills is realized.

[0015] Furthermore, the driving sprocket mechanism also includes a driving sprocket support, a reduction motor, a fastening assembly three, a coupling one, a shaft one, a key one, a bearing seat one, a fastening assembly four, a bearing seat two, a block one, a protective cover one, an upper angle steel one, a lower angle steel one, an H-shaped steel one and a lifting eye screw. The driving sprocket support is a welded structural member, and its base plate is anchored to the foundation by bolts. An H-shaped steel one is welded under the base plate, and the H-shaped steel one is cast in the foundation by cement; a reduction motor is placed on the right side of the driving sprocket support, and the reduction motor is fixed to the base plate of the driving sprocket support by fastening assembly three; a lifting eye screw is provided above the reduction motor, and a protective cover one is welded to the outside of the reduction motor; the left output end of the reduction motor is connected to the coupling one, and the left side of the coupling one is connected to the shaft one and is tightly fixed in place by a key one; A driving sprocket is arranged between the bearing seat 1 and the bearing seat 2, and the outer edge of the driving sprocket is meshed with the roller chain to form a chain drive; the shaft 1 passes through the bearing seat 1, the driving sprocket and the bearing seat 2 from right to left in sequence, and bearings are respectively installed inside the bearing seat 1 and the bearing seat 2, and the bearings are all connected with the shaft 1; the bearing seat 1 and the bearing seat 2 are respectively fixed to the side of the box body of the driving sprocket support by fastening components 4, and a stopper 1 is welded on the upper and lower sides of the bottom plate of the bearing seat 1 and the bearing seat 2; an upper angle steel 1 and a lower angle steel 1 are welded on the side of the box body of the driving sprocket support, which are located opposite to the bearing seat 1 and the bearing seat 2; the upper angle steel 1 is connected to one side of the upper guide rail of the rightmost chain and is fixed by fastening components 2; the lower angle steel 1 is connected to one side of the lower guide rail of the rightmost chain and is fixed by fastening components 2.

[0016] Furthermore, the driven sprocket mechanism also includes a driven sprocket support, a protective cover 2, an upper angle steel 2, a lower angle steel 2, a shaft 2, a key 2, a bearing seat 3, a fastening assembly 5, a bearing seat 4 and a stopper 2. The driven sprocket support is a welded structural member, and its bottom plate is fixed to the trolley base by bolts; the outer side of the driven sprocket support is welded with a protective cover 2; the bearing seat 3 and the bearing seat 4 are fixed to the side of the box body of the driven sprocket support through the fastening assembly 5, and stopper 2 is welded on both sides of the upper and lower bottom plates of the bearing seat 3 and the bearing seat 4; a driven sprocket is arranged between the bearing seat 3 and the bearing seat 4, and the shaft 2 is from right to left It passes through bearing seat three, driven sprocket and bearing seat four in sequence, and bearings are respectively installed inside bearing seat three and bearing seat four, and the bearings are all connected with shaft two; the driven sprocket and shaft two are fixed in place by key two, and the outer edge of the driven sprocket is engaged with the roller chain to form a chain drive; the upper angle steel two and the lower angle steel two are welded on the side of the box body of the driven sprocket support, which are located opposite to bearing seat three and bearing seat four; the upper angle steel two is connected to one side of the upper guide rail of the leftmost chain, and is fixed by fastening component two; the lower angle steel two is connected to one side of the lower guide rail of the leftmost chain, and is fixed by fastening component two.

[0017] Furthermore, the wheel device includes an axis three, a bearing seat five, a bearing seat six, a wheel, a pressure plate, a screw, a key three, a fastening assembly six and a gasket group one, and the centerline spacing between two adjacent sets of wheel devices is L4; the axis three passes through the bearing seat five and the bearing seat six from left to right in sequence, and the bearing seats five and the bearing seat six are respectively installed inside the bearing seats five and the bearing seat six, and the bearings are both connected to the axis three, and the bearing seats five and the bearing seat six are respectively fixed to the trolley base through the fastening assembly six; a gasket group one is arranged between the bearing seats five and the bearing seats six and the trolley base respectively, and the bearing seat five is located on the left side of the bearing seat six; a set of wheels is installed at each end of the axis three, and the inner hole of the wheel is fixed to the outer diameter of the axis three by a key three; a set of pressure plates is arranged at each end of the axial outer side of the wheel, and is embedded in the end holes on both sides of the axis three by two screws; the projections of the multiple wheels on each side of the multiple sets of wheel devices in the moving direction of the rolling mill base coincide, and the multiple sets of wheel devices and the multiple sets of guide rail brackets are arranged alternately.

[0018] Furthermore, the lateral spacing between the two groups of positioning detection systems is L1; the positioning detection system includes a bottom steel plate, a bracket fastening assembly, a guide rail support frame, a guide rail, a guide rail fastening assembly, a switch support frame 1, a switch support frame 2, a proximity switch 1, a proximity switch 2, a sensor plate 1, a sensor plate 2, a sensor bottom plate and a sensor plate fastening assembly; the bottom steel plate is welded to the side vertical plate of the trolley base, and the guide rail support frame is connected to the bottom steel plate through the bracket fastening assembly; the guide rail is welded and fixed to the upper part of the guide rail support frame, and the switch support frame 1 and the switch support frame 2 are respectively connected to the guide rail through the guide rail fastening assembly; the position of the switch support frame 1 is higher than the switch support frame 2 and is located on the left side of the switch support frame 2, and the lateral spacing between the switch support frame 1 and the switch support frame 2 is L5; the proximity switch 1 is installed and fixed above the switch support frame 1, and the proximity switch 2 is installed and fixed above the switch support frame 2; the position of the proximity switch 1 is higher than the proximity switch 2 and is located on the proximity switch On the left side of the second sensor plate, the lateral spacing between the proximity switch 1 and the proximity switch 2 is L5, and the positions of the four groups of proximity switches in the two positioning detection systems are arranged from left to right as S1, S2, S3, and S4; a sensing plate 1 is provided at the position of the proximity switch 1, and a sensing plate 2 is provided at the position of the proximity switch 2, and the sensing plate 1 and the sensing plate 2 are both fixed to the sensing bottom plate by a sensing plate fastening assembly, and the sensing bottom plate is welded and fixed to the side vertical plate of the rolling mill base; the sensing plate 1 and the sensing plate 2 move laterally on the wheel device together with the rolling mill base; the tops of the sensing plate 1 and the sensing plate 2 are flush, and the bottom of the sensing plate 2 is lower than the bottom of the sensing plate 1; the sensing plate 1 is located on the left side of the sensing plate 2, and the corresponding position of the sensing plate 1 is T1, and the corresponding position of the sensing plate 2 is T2; the lateral distance between the sensing plate 1 at the T1 position and the first group of proximity switches 1 on the leftmost side at the S1 position is L2, which is equal to the distance between the center lines of the rolling mill base 1 and the rolling mill base 2.

[0019] Furthermore, the trolley base is an integrally welded type, including a bottom H-shaped steel, a left support part, an intermediate support part and an upper end support part. The bottom H-shaped steel is located at the bottom of the trolley base, with one group arranged on each side, and is cast together with the foundation through a grouting layer; the left support part is located at the left end of the trolley base, and its top surface is fastened to the bottom plate of the driven sprocket support of the driven sprocket mechanism by bolts; the intermediate support part is evenly arranged in the middle area of ​​the trolley base, and its H-shaped steel top is fastened to the guide rail bracket by fastening component one; the upper end support part is evenly arranged in the upper area of ​​the trolley base, and its top surface is connected to the wheel device by fastening component six.

[0020] Furthermore, the guide rail bracket includes an upper angle steel three, a lower angle steel three and a box body, and the box body is a welded structure, and its bottom is fastened together with the middle support part of the trolley base by a fastening component one; a group of upper angle steel three and a group of lower angle steel three are welded on both sides of each box body, and the upper angle steel three is located on the upper part of the lower angle steel three; the upper angle steel three of the rightmost group of guide rail brackets is connected to the upper angle steel one of the driving sprocket mechanism through the chain upper guide rail, and the lower angle steel three is connected to the lower angle steel one of the driving sprocket mechanism through the chain lower guide rail; the upper angle steel three of the leftmost group of guide rail brackets is connected to the upper angle steel two of the driven sprocket mechanism through the chain upper guide rail, and the lower angle steel three is connected to the lower angle steel two of the driven sprocket mechanism through the chain lower guide rail; the upper angle steel three of each middle group of guide rail brackets are connected through the chain upper guide rail, and the lower angle steel three are connected through the chain lower guide rail; the chain upper guide rail and the chain lower guide rail are both fixed by fastening component two.

[0021] Furthermore, the structures of the chain upper guide rail and the chain lower guide rail are the same, the chain upper guide rail includes a connecting steel plate 1, a channel steel 1 and a top steel plate 1, and the chain lower guide rail includes a connecting steel plate 2, a channel steel 2 and a top steel plate 2; the connecting steel plate 1 is welded and fixed above the connecting steel plate 1, and the top steel plate 1 is welded above the channel steel 1; the connecting steel plate 2 is welded above the connecting steel plate 2, and the top steel plate 2 is welded above the channel steel 2; the connecting steel plate 1 is divided into two groups, one group is set on the left and one group is set on the right, and the connecting steel plate 1 is used to be fixed with the upper angle steel 1 of the driving sprocket mechanism, the upper angle steel 2 of the driven sprocket mechanism, and the upper angle steel 3 of the guide rail bracket through two fastening components; the connecting steel plate 2 is divided into two groups, one group is set on the left and one group is set on the right, and the connecting steel plate 2 is used to be fixed with the lower angle steel 1 of the driving sprocket mechanism, the lower angle steel 2 of the driven sprocket mechanism, and the lower angle steel 3 of the guide rail bracket through two fastening components.

[0022] The present invention also provides a staggered transposition method of a dual-point transverse trolley, wherein a rolling mill to be repaired is stored on a first rolling mill base, and a repaired rolling mill is stored on a second rolling mill base, specifically comprising the following steps:

[0023] Step 1: Before performing the staggered transposition, calibrate the positions of the proximity switches and the sensor plates, including calibrating the positions of 4 groups of proximity switches and 2 groups of sensor plates, i.e., calibrating the positions of S1, S2, S3, S4, T1, and T2;

[0024] Step 2: Transport the repaired rolling mill to the O3 position: During the preparation stage, the center lines of the rolling mill base 2 and the 2# push-pull cylinder have been aligned, and the repaired rolling mill has reached the O4 position; the piston rod of the 2# push-pull cylinder extends, pushing the repaired rolling mill from the O4 position of the 2# transverse trolley to the O3 position of the 1# transverse trolley. The piston rod head of the 2# push-pull cylinder disengages and retracts to the shortest stroke, and the repaired rolling mill is stored on the rolling mill base 2;

[0025] Step 3. Align the center lines of the mill base 1 and the 1# push-pull cylinder: The active sprocket mechanism that drives the 1# transverse trolley drives the roller chain to move through the active sprocket. The active sprocket, roller chain, and driven sprocket form a chain drive, which together pulls the mill base to the right on the upper part of the wheel of the wheel device until the center lines of the mill base 1 and the 1# push-pull cylinder are aligned, and the center lines of the 1# push-pull cylinder, the mill base 1, and the cross-transport trolley are aligned on a horizontal line; at this time, the sensing points at positions T1 and S3 coincide, and the center line of the mill base 1 reaches position O2. Its maximum transverse movement distance is L3 = L2 + L1.

[0026] Step 4: Transport the mill to be repaired to position O2: During the preparation phase, the mill to be repaired has been prepared at position O1 of the cross-transport vehicle, and the center line alignment operation between the mill base 1 and the 1# push-pull cylinder has been completed; the piston rod of the 1# push-pull cylinder is extended to its maximum position, and the mill to be repaired is pulled back from position O1 of the cross-transport vehicle to position O2 of the 1# transverse trolley. The piston rod head of the 1# push-pull cylinder is disengaged and further retracted to the shortest stroke, and the mill to be repaired is stored on the mill base 1;

[0027] Step 5. The repaired rolling mill returns to position O2: the driving sprocket mechanism that drives the 1# transverse trolley drives the roller chain to move in the opposite direction through the driving sprocket. The driving sprocket, roller chain, and driven sprocket form a chain drive, which together pulls the rolling mill base to the left on the upper part of the wheel of the wheel device until the center line of the rolling mill base 2 is aligned with the center line of the 1# push-pull cylinder, that is, the center lines of the 1# push-pull cylinder, the rolling mill base 2, and the cross-transport vehicle are aligned on the same horizontal line; at this time, the sensing point of the T2 position coincides with the sensing point of the S4 position, and the center line of the rolling mill base 2 reaches position O2, and its transverse movement distance is L2;

[0028] Step 6: Transport the repaired mill to position O1: The piston rod of the 1# push-pull cylinder gradually extends, pushing the repaired mill from position O2 of the 1# transverse trolley to position O1. When the piston rod extends to its maximum stroke, the repaired mill reaches position O1 of the straddle transporter, and the piston rod head of the 1# push-pull cylinder disengages and retracts to its shortest stroke. Subsequently, the repaired mill is transported to the online rolling workshop via the straddle transporter, where it can begin online rolling work, ensuring rapid resumption of production.

[0029] Step 7: Transport the mill to be repaired to position O3: The active sprocket mechanism of the 1# traverse trolley drives the roller chain through the active sprocket, thereby pulling the mill base to the left on the upper part of the wheel assembly until the center line of the mill base 1 is aligned with the center line of the 2# push-pull cylinder. At this time, the sensing points at positions T1 and S1 coincide, and the center line of the mill base 1 reaches position O3. Its traverse distance is L1 - L2.

[0030] Step 8: The rolling mill to be repaired is transported to the O4 position: the piston rod of the 2# push-pull cylinder is extended to the maximum stroke, and the rolling mill to be repaired is pulled back from the O3 position of the 1# transverse trolley to the O4 position of the 2# transverse trolley. The piston rod head of the 2# push-pull cylinder is disengaged and retracted to the shortest stroke, and the rolling mill to be repaired reaches the O4 position;

[0031] Step 9: Transport the mill to be repaired to position O5: Drive the 2# transverse trolley and then pull its mill base to drag the mill to be repaired from position O4, and gradually move it toward position O5 until the mill to be repaired reaches position O5 of the repair station;

[0032] At this point, the interleaving process ends.

[0033] The present invention also provides a staggered transposition method of a dual-point transverse trolley, wherein a rolling mill to be repaired is stored on the second rolling mill base, and a repaired rolling mill is stored on the first rolling mill base, which specifically includes the following steps:

[0034] S1. Before the staggered transposition, the positions of the proximity switches and the induction plates are calibrated, including the position calibration of 4 groups of proximity switches and 2 groups of induction plates, i.e. the positions of S1, S2, S3, S4, T1 and T2;

[0035] S2. The repaired rolling mill is transported to position O3:

[0036] S21, during the preparation phase, the repaired rolling mill has reached position O4; drive the 1# traverse trolley to move the rolling mill base to the right until the center line of the rolling mill base 1 is aligned with the center line of the 2# push-pull cylinder; at this time, the sensing point at position T1 coincides with the sensing point at position S1, and the center line of the rolling mill base 1 reaches position O3, and its traverse distance is L2;

[0037] S22. Subsequently, the piston rod of the 2# push-pull cylinder extends, pushing the repaired rolling mill from the O4 position of the 2# transverse trolley to the O3 position of the 1# transverse trolley. The piston rod head of the 2# push-pull cylinder disengages and retracts to the shortest stroke, and the repaired rolling mill is stored on the rolling mill base 1.

[0038] S3. Align the center lines of the mill base 2 and the 1# push-pull cylinder; drive the 1# traverse trolley to drag the mill base to the right on top of the wheel assembly until the center lines of the mill base 2 and the 1# push-pull cylinder are aligned, that is, the center lines of the 1# push-pull cylinder, the mill base 2, and the cross-transport trolley are aligned on a horizontal line; at this point, the sensing points at positions T2 and S4 coincide, and the center line of the mill base 2 reaches position O2, with the traverse distance being L1 - L2.

[0039] S4. Transport the mill to be repaired to position O2: During the preparation phase, the mill to be repaired is already ready at position O1 on the overpass transport vehicle. The piston rod of the 1# push-pull cylinder is extended to its maximum position, and the mill to be repaired is pulled back from position O1 on the overpass transport vehicle to position O2 on the 1# traverse trolley. The piston rod head of the 1# push-pull cylinder is disengaged and further retracted to the shortest stroke. The mill to be repaired is then stored on the second mill base.

[0040] S5. The repaired rolling mill is transported to position O2: the active sprocket mechanism of the 1# transverse trolley is driven to pull the rolling mill base to continue moving to the right until the center lines of the rolling mill base 1 and the 1# push-pull cylinder are aligned, that is, the center lines of the 1# push-pull cylinder, the rolling mill base 1, and the cross-transport trolley are aligned on a horizontal line; at this time, the sensing points of position T1 and position S3 coincide, and the center line of the rolling mill base 1 reaches position O2, and its transverse movement distance is L2;

[0041] S6. The repaired rolling mill is transported to position O1: The piston rod of the 1# push-pull cylinder gradually extends, pushing the repaired rolling mill from position O2 of the 1# transverse trolley to position O1. When the piston rod extends to its maximum stroke, the repaired rolling mill reaches position O1 of the straddle transporter, and the piston rod head of the 1# push-pull cylinder disengages and retracts to its shortest stroke. The repaired rolling mill is then transported to the online rolling workshop via the straddle transporter, allowing for rapid resumption of production.

[0042] S7: The mill to be repaired is transported to position O3: Drive the 1# traverse trolley to pull the mill base to the left until the center line of the mill base 2 is aligned with the center line of the 2# push-pull cylinder. At this time, the sensing points at positions T2 and S2 coincide, and the center line of the mill base 2 reaches position O3. The maximum traverse distance is L3 = L1 + L2.

[0043] S8, the rolling mill to be repaired is transported to the O4 position: the piston rod of the 2# push-pull cylinder is extended to the maximum stroke, the rolling mill to be repaired is pulled back from the O3 position of the 1# transverse moving trolley to the O4 position of the 2# transverse moving trolley, the piston rod head of the 2# push-pull cylinder is separated and retracted to the shortest stroke, and the rolling mill to be repaired reaches the O4 position;

[0044] S9, the rolling mill to be repaired is transported to the O5 position: the 2# transverse moving trolley is driven to pull the rolling mill base to drive the rolling mill to be repaired to move from the O4 position to the O5 position gradually, until the rolling mill to be repaired reaches the repair station O5 position;

[0045] At this point, the staggered transposition process is completed.

[0046] Compared with the prior art, the present application has the following advantages:

[0047] 1. Through the ingenious design of the double-point transverse moving trolley, the whole production process layout is more reasonable, the work efficiency can be effectively improved, and the occupied area is not increased, and the cost investment is effectively controlled.

[0048] 2. Compared with the traditional technology, the double-point transverse moving trolley improves the reliability of equipment positioning, solves the drawbacks and deficiencies of mechanical limiting, and is especially suitable for double-point (or multi-point) equipment transfer.

[0049] Based on the above reasons, the present application can be widely popularized in the field of equipment transfer. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0051] Figure 1 It is a process layout schematic diagram of the present application.

[0052] Figure 2 It is a process layout schematic diagram of the present application. Figure 1

[0053] Figure 3 It is a front view of the double-point transverse moving trolley (including the rolling mill base).

[0054] Figure 4 It is a top view of the present application. Figure 3

[0055] It is an A-A view of the present application. Figure 5 Figure 4 It is an A-A view of the present application.​​

[0056] Figure 6 for Figure 4 Q-direction view.

[0057] Figure 7 for Figure 3 (excluding rolling mill base) top view.

[0058] Figure 8 It is a three-dimensional schematic diagram of the active sprocket mechanism.

[0059] Figure 9 It is the main view of the active sprocket mechanism.

[0060] Figure 10 It is a top view of the driving sprocket mechanism.

[0061] Figure 11 It is the left view of the active sprocket mechanism.

[0062] Figure 12 This is the front view of the driven sprocket mechanism.

[0063] Figure 13 for Figure 12 P-direction view (without protective cover).

[0064] Figure 14 for Figure 13 BB view.

[0065] Figure 15 A top view of the wheel assembly.

[0066] Figure 16 for Figure 15 CC view.

[0067] Figure 17 for Figure 15 K-direction view.

[0068] Figure 18 for Figure 7 Schematic diagram of R enlargement.

[0069] Figure 19 for Figure 18 Right view of .

[0070] Figure 20 Schematic diagram of the process layout of the positioning detection system.

[0071] Figure 21 This is the front view of the guide rail bracket.

[0072] Figure 22 This is a top view of the upper chain guide (lower chain guide).

[0073] Figure 23 for Figure 22 DD view.

[0074] Figure 24 Schematic diagram of the preparatory work for the staggered transposition method.

[0075] Figures 25 to 32 This is a schematic diagram of the first to eighth steps of Example 1.

[0076] Figure 25 This is a schematic diagram of the first step of Example 1.

[0077] Figure 26 This is a schematic diagram of the second step of Example 1.

[0078] Figure 27 This is a schematic diagram of the third step of Example 1.

[0079] Figure 28 This is a schematic diagram of the fourth step of Example 1.

[0080] Figure 29 This is a schematic diagram of the fifth step of Example 1.

[0081] Figure 30 This is a schematic diagram of the sixth step of Example 1.

[0082] Figure 31 This is a schematic diagram of the seventh step of Example 1.

[0083] Figure 32 This is a schematic diagram of the eighth step of Example 1.

[0084] Figures 33 to 41 This is a schematic diagram of the first to eighth steps of Example 2.

[0085] Figure 33 Schematic diagram of the first step (1) of Example 2.

[0086] Figure 34 Schematic diagram of the first step (2) of Example 2.

[0087] Figure 35 This is a schematic diagram of the second step of Example 2.

[0088] Figure 36 This is a schematic diagram of the third step of Example 2.

[0089] Figure 37 This is a schematic diagram of the fourth step of Example 2.

[0090] Figure 38 This is a schematic diagram of the fifth step of Example 2.

[0091] Figure 39 This is a schematic diagram of the sixth step of Example 2.

[0092] Figure 40 This is the schematic diagram of the seventh step of Example 2.

[0093] Figure 41 This is a schematic diagram of the eighth step of Example 2.

[0094] In the figure: O1 position: transfer point for the cross-transport vehicle; O2 position: the first transfer point for the 1# transverse trolley; O3 position: the second transfer point for the 1# transverse trolley; O4 position: the first transfer point for the 2# transverse trolley; O5 ​​position: the second transfer point for the 2# transverse trolley;

[0095] S1 position: installation position of the first group of proximity switches (used for centerline positioning of the rolling mill base 1 401); S2 position: installation position of the first group of proximity switches (used for centerline positioning of the rolling mill base 2 402); S3 position: installation position of the second group of proximity switches (used for centerline positioning of the rolling mill base 1 401); S4 position: installation position of the second group of proximity switches (used for centerline positioning of the rolling mill base 2 402);

[0096] T1 position: installation position of induction plate 1 (used for centerline positioning of rolling mill base 1 401); T2 position: installation position of induction plate 2 (used for centerline positioning of rolling mill base 2 402);

[0097] 1', cross-transport vehicle; 2', 1# push-pull cylinder; 3', 1# transverse trolley; 4', 2# transverse trolley; 5', 2# push-pull cylinder;

[0098] 1. Driving sprocket mechanism; 2. Driven sprocket mechanism; 3. Roller chain; 4. Rolling mill base; 5. Wheel assembly; 6. Positioning detection system; 7. Trolley base; 8. Guide rail bracket; 9. Upper chain guide rail; 10. Lower chain guide rail; 11. Fastening assembly 1; 12. Fastening assembly 2.

[0099] 101. Driving sprocket support; 102. Reducer motor; 103. Fastening assembly three; 104. Coupling one; 105. Shaft one; 106. Key one; 107. Bearing seat one; 108. Fastening assembly four; 109. Bearing seat two; 110. Stopper one; 111. Driving sprocket; 112. Protective cover one; 113. Upper angle steel one; 114. Lower angle steel one; 115. H-beam one; 116. Eye screw;

[0100] 201, driven sprocket support; 202, protective cover 2; 203, upper angle steel 2; 204, lower angle steel 2; 205, shaft 2; 206, key 2; 207, bearing seat 3; 208, fastening assembly 5; 209, bearing seat 4; 210, stopper 2; 211, driven sprocket;

[0101] 401, rolling mill base 1; 402, rolling mill base 2;

[0102] 501, shaft three; 502, bearing seat five; 503, bearing seat six; 504, wheel; 505, pressure plate; 506, screw; 507, key three; 508, fastening assembly six; 509, gasket set one;

[0103] 601, bottom steel plate; 602, bracket fastening assembly; 603, guide rail support frame; 604, guide rail; 605, guide rail fastening assembly; 606, switch support frame 1; 607, switch support frame 2; 608, proximity switch 1; 609, proximity switch 2; 610, sensor plate 1; 611, sensor plate 2; 612, sensor bottom plate; 613, sensor plate fastening assembly;

[0104] 701, bottom H-shaped steel; 702, left support; 703, middle support; 704, upper support;

[0105] 801, upper angle steel 3; 802, lower angle steel 3; 803, box body;

[0106] 901, connecting steel plate one; 902, channel steel one; 903, top steel plate one; 1001, connecting steel plate two; 1002, channel steel two; 1003, top steel plate two. DETAILED DESCRIPTION

[0107] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0108] In traditional technology, only one set of rolling mill bases is set above the 1# transverse trolley 3', and there is no alternative cross-transport channel or replacement point. The repaired rolling mill can only be put into place after the transportation of the rolling mill to be repaired is completed. The overall replacement of the rolling mill is time-consuming and has low work efficiency.

[0109] A series of technical solutions have emerged, improving upon the traditional approach. Two parallel rows of cross-transport vehicles (1') and push-pull cylinders (2') are installed, each supported by a traversing trolley for transfer, meeting the demands of the production process. This solution resolved the time-consuming and inefficient mill replacements, but it also resulted in increased plant space and equipment costs, significantly increasing costs.

[0110] To sum up, it is necessary to break the constraints of traditional technical solutions. The technical solutions developed must take into account factors such as replacement time, work efficiency and capital investment, and perfectly match the requirements of production rhythm and workshop capacity.

[0111] The present invention provides a dual-point transverse movement trolley, including a driving sprocket mechanism 1, a driven sprocket mechanism 2, a roller chain 3, a rolling mill base 4, a wheel device 5, a positioning detection system 6, a trolley base 7, a guide rail bracket 8, an upper chain guide rail 9, a lower chain guide rail 10, a fastening component 1 11, and a fastening component 2 12.

[0112] A double-point transverse shift trolley of the present invention drives the active sprocket mechanism 1 to move the roller chain 3 by relying on the active sprocket 111. The active sprocket 111, the roller chain 3, and the driven sprocket 211 form a chain transmission, which jointly pulls the rolling mill base 4 to move above the wheel 504 of the wheel device 5, and finally realizes multiple alignment operations of the center lines of the rolling mill base 1 401, the rolling mill base 2 402 and the 1# push-pull cylinder 2', and the 2# push-pull cylinder 5'. The transfer function of the two rolling mills is realized by staggered replacement of the rolling mill base 1 401 and the rolling mill base 2 402.

[0113] The driving sprocket mechanism 1 includes a driving sprocket support 101, a reduction motor 102, a fastening component 3 103, a coupling 104, a shaft 105, a key 106, a bearing seat 107, a fastening component 4 108, a bearing seat 2 109, a block 110, a driving sprocket 111, a protective cover 112, an upper angle steel 113, a lower angle steel 114, an H-shaped steel 115, and a lifting eye screw 116. The driving sprocket support 101 is a welded structural member, and its base plate is anchored to the foundation by bolts. H-shaped steel 115 and H-shaped steel 115 are welded below the base plate. 5 is poured into the foundation through cement, which plays a role in stable support and impact resistance; the reduction motor 102 is placed on the right side of the active sprocket support 101, and the reduction motor 102 is fixed to the bottom plate of the active sprocket support 101 through the fastening component 3 103. The reduction motor 102 is provided with a lifting screw 116 above it to realize its lifting and transportation; the outer side of the reduction motor 102 is welded with a protective cover 112 to prevent dust and water; the output end on the left side of the reduction motor 102 is connected to the coupling 104, and the left side of the coupling 104 is connected to the shaft 105, and is connected to the shaft 105 through the key 1 06 is tightened and fixed in position; shaft 105 passes through bearing seat 107, driving sprocket 111 and bearing seat 2 109 from right to left in sequence, and bearings are installed inside bearing seat 107 and bearing seat 2 109 respectively, and both bearings are connected with shaft 105; bearing seat 107 and bearing seat 2 109 are fixed to the side of the box of driving sprocket support 101 through fastening component 4 108, and stopper 110 is welded on both sides of the upper and lower bottom plates of bearing seat 107 and bearing seat 2 109 to prevent the two sets of bearing seats from moving up and down; bearing seat 107 and bearing seat A driving sprocket 111 is provided between the two 109, and the outer edge of the driving sprocket 111 is engaged with the roller chain 3 to form a chain drive; an upper angle steel 113 and a lower angle steel 114 are welded to the side of the box body of the driving sprocket support 101 (opposite to the bearing seat 107 and the bearing seat 2 109); the upper angle steel 113 and the upper angle steel 3 801 of the guide rail bracket 8 are connected through the chain upper guide rail 9 and are fixed by the fastening component 2 12; the lower angle steel 114 and the lower angle steel 3 802 of the guide rail bracket 8 are connected through the chain lower guide rail 10 and are fixed by the fastening component 2 12.

[0114] The driven sprocket mechanism 2 includes a driven sprocket support 201, a protective cover two 202, an upper angle steel two 203, a lower angle steel two 204, a shaft two 205, a key two 206, a bearing seat three 207, a fastening assembly five 208, a bearing seat four 209, a stop block two 210, and a driven sprocket 211. The driven sprocket support 201 is a welded structure, and its bottom plate is fixed on the trolley base 7 by bolts. The protective cover two 202 is welded on the outside of the driven sprocket support 201 to prevent dust and water. The bearing seat three 207 and the bearing seat four 209 are fixed on the side of the box body of the driven sprocket support 201 by the fastening assembly five 208. The stop block two 210 is welded on the top and bottom of the bottom plate of the bearing seat three 207 and the bearing seat four 209 to prevent the two sets of bearing seats from moving up and down. The shaft two 205 passes through the bearing seat three 207, the driven sprocket 211, and the bearing seat four 209 from right to left. Bearings are installed in the bearing seat three 207 and the bearing seat four 209, and the two bearings are connected with the shaft two 205. The driven sprocket 211 is arranged between the bearing seat three 207 and the bearing seat four 209, and is fixed in position by the key two 206 between the driven sprocket 211 and the shaft two 205. The outer edge of the driven sprocket 211 is engaged with the roller chain 3 to form a chain drive. The upper angle steel two 203 and the lower angle steel two 204 are welded on the side of the box body of the driven sprocket support 201, opposite the bearing seat three 207 and the bearing seat four 209. The upper angle steel two 203 is connected with the upper angle steel three 801 of the guide rail support 8 through the chain upper guide rail 9, and is fixed by the fastening assembly two 12. The lower angle steel two 204 is connected with the lower angle steel three 802 of the guide rail support 8 through the chain lower guide rail 10, and is fixed by the fastening assembly two 12.

[0115] The right side of the roller chain 3 is engaged with the driving sprocket 111, and the left side is engaged with the driven sprocket 211. The upper and lower sections of the roller chain 3 are supported by the chain upper guide rail 9 and the chain lower guide rail 10, respectively.

[0116] The rolling mill base 4 includes two parts, a rolling mill base one 401 and a rolling mill base two 402. The center line distance between the rolling mill base one 401 and the rolling mill base two 402 is L2, the maximum transverse movement distance of the rolling mill base one 401 and the rolling mill base two 402 is L3, and L3 = L1 + L2. The rolling mill base one 401 and the rolling mill base two 402 are used to store the rolling mill to be repaired and the repaired rolling mill, respectively. The rolling mill base 4 is an overlapping area and an important guarantee for the exchange of offline and online areas of the rolling mill, and is crucial for the transfer process of the rolling mill.

[0117] The wheel device 5 includes an axle 3 501, a bearing seat 502, a bearing seat 6 503, a wheel 504, a pressure plate 505, a screw 506, a key 3 507, a fastening assembly 6 508, and a gasket group 1 509. The centerline distance between two adjacent sets of wheel devices 5 is L4; the axle 3 501 passes through the bearing seat 5 502 and the bearing seat 6 503 from left to right in sequence, and bearings are respectively installed inside the bearing seat 502 and the bearing seat 6 503. Both bearings are connected to the axle 3 501, and the bearing seat 502 and the bearing seat 6 503 are fixed to the bottom of the trolley by the fastening assembly 6 508. On the seat 7, a gasket group 1 509 is set between the bearing seat 502 and the bearing seat 6 503 and the trolley base 7 respectively to adjust the elevation of the wheel 504, and the bearing seat 502 is located on the left side of the bearing seat 6 503; a group of wheels 504 are installed at each end of the shaft 3 501, and the inner hole of the wheel 504 and the outer diameter of the shaft 3 501 are fixed by a key 3 507 to prevent the wheel 504 from rotating around the shaft 3 501; a group of pressure plates 505 are set at each end of the axial outside of the wheel 504, and are embedded in the end holes on both sides of the shaft 3 501 through two screws 506 to prevent the wheel 504 from moving axially.

[0118] The positioning detection system 6 includes a bottom steel plate 601, a bracket fastening assembly 602, a guide rail support frame 603, a guide rail 604, a guide rail fastening assembly 605, a switch support frame 1 606, a switch support frame 2 607, a proximity switch 1 608, a proximity switch 2 609, a sensor plate 1 610, a sensor plate 2 611, a sensor bottom plate 612, and a sensor plate fastening assembly 613. The positioning detection system 6 has two groups with a horizontal spacing of L1; the bottom steel plate 601 is welded to the side vertical plate of the trolley base 7, and the guide rail support frame 603 is connected to the bottom steel plate 601 through the bracket fastening assembly 602; the guide rail support frame 60 3. The guide rail 604 is welded and fixed on the upper part. The switch support frame 1 606 and the switch support frame 2 607 are connected to the guide rail 604 through the guide rail fastening assembly 605 respectively. In the height direction, the switch support frame 1 606 is higher than the switch support frame 2 607. The horizontal distance between the switch support frame 1 606 and the switch support frame 2 607 is L5, and the switch support frame 1 606 is located on the left side of the switch support frame 2 607. The proximity switch 1 608 is installed and fixed above the switch support frame 1 606, and the proximity switch 2 609 is installed and fixed above the switch support frame 2 607. In the height direction, the proximity switch 1 608 is higher than the switch support frame 2 The position of the proximity switch 2 609 is high, and the horizontal distance between the proximity switch 1 608 and the proximity switch 2 609 is L5. The proximity switch 1 608 is located on the left side of the proximity switch 2 609. The positions of the four groups of proximity switches are arranged from left to right as S1, S2, S3, and S4; the induction plate 1 610 is set at the appropriate position of the proximity switch 1 608, and the induction plate 2 611 is set at the appropriate position of the proximity switch 2 609. In the height direction, the tops of the induction plates 1 610 and the induction plates 2 611 are flush, and the induction plate 2 611 is lower than the position of the induction plate 1 610 at the bottom; the induction plate 1 610 is located on the induction plate 2 611. On the left side of rolling mill base 401, sensor plate 1 610 corresponds to position T1 (used for locating the centerline of rolling mill base 1 401), and sensor plate 2 611 corresponds to position T2 (used for locating the centerline of rolling mill base 2 402). The lateral distance between sensor plate 1 610 (position T1) and the first leftmost group of proximity switches 1 608 (position S1) is L2, which is equal to the distance between the centerlines of rolling mill base 1 401 and rolling mill base 2 402. Both sensor plate 1 610 and sensor plate 2 611 are secured to sensor base plate 612 via sensor plate fastening assembly 613, and sensor base plate 612 is welded to the side uprights of rolling mill base 4. Therefore, sensor plate 1 610 and sensor plate 2 611 can move laterally on wheel assembly 5 along with rolling mill base 4.

[0119] The trolley base 7 includes a bottom H-shaped steel 701, a left support part 702, a middle support part 703, and an upper support part 704. The trolley base 7 is an integrally welded type, which provides support for the transportation of the 1# transverse trolley 3' and the rolling mill; the bottom H-shaped steel 701 is located at the bottom of the trolley base 7, with one group set on each side, and is cast together with the foundation through a grouting layer, which plays an impact-resistant role during the entire rolling mill transportation process; the left support part 702 is located at the left end of the trolley base 7, and its top surface is fastened to the bottom plate of the driven sprocket support 201 by bolts, which supports the driven sprocket mechanism 2; the middle support part 703 is evenly arranged in the middle area of ​​the trolley base 7, and its H-shaped steel top is fastened to the guide rail bracket 8 by a fastening component 11, which supports the guide rail bracket 8; the upper support part 704 is evenly arranged in the upper area of ​​the trolley base 7, and its top surface is connected to the wheel device 5 by a fastening component 6 508, which supports the wheel device 5.

[0120] The guide rail bracket 8 includes an upper angle steel three 801, a lower angle steel three 802, and a box body 803. The box body 803 is a welded structure, and its bottom is fastened to the middle support part 703 by a fastening component 11; a group of upper angle steel three 801 and a group of lower angle steel three 802 are welded on both sides of the box body 803, and the upper angle steel three 801 is located on the upper part of the lower angle steel three 802; the upper angle steel three 801 of the rightmost group of guide rail bracket 8 is connected to the upper angle steel one 113 of the active sprocket mechanism 1 through the chain upper guide rail 9, and the lower angle steel three 802 is connected to the lower of the active sprocket mechanism 1. The angle steels 114 are connected by the lower chain guide rail 10; the upper angle steel 3 801 of the leftmost group of guide rail brackets 8 and the upper angle steel 2 203 of the driven sprocket mechanism 2 are connected by the upper chain guide rail 9, and the lower angle steel 3 802 and the lower angle steel 2 204 of the driven sprocket mechanism 2 are connected by the lower chain guide rail 10; the upper angle steel 3 801 of each middle group of guide rail brackets 8 are connected by the upper chain guide rail 9, and the lower angle steel 3 802 are connected by the lower chain guide rail 10; the upper chain guide rail 9 and the lower chain guide rail 10 need to be fastened together and fixed by component 2 12.

[0121] The upper chain guide rail 9 and the lower chain guide rail 10 have the same structure. The upper chain guide rail 9 includes a connecting steel plate 1 901, a channel steel 1 902, and a top steel plate 1 903. The lower chain guide rail 10 includes a connecting steel plate 2 1001, a channel steel 2 1002, and a top steel plate 2 1003. The connecting steel plate 1 901 (connecting steel plate 2 1001) is divided into two groups, one on the left and one on the right. The connecting steel plate 1 901 is connected to the upper angle steel 113 (driving sprocket mechanism 1), the upper angle steel 203 (driven sprocket mechanism 2), and the upper angle steel 3 801 (guide rail bracket 8). They are fixed together by fastening components 2 12; the connecting steel plate 2 1001 and the lower angle steel 114 (driving sprocket mechanism 1), the lower angle steel 204 (driven sprocket mechanism 2), and the lower angle steel 3 802 (guide rail bracket 8) are fixed together by fastening components 2 12; the connecting steel plate 1 901 (connecting steel plate 2 1001) is welded and fixed above the channel steel 1 902 (channel steel 2 1002), and the top steel plate 1 903 (top steel plate 2 1003) is welded above the channel steel 1 902 (channel steel 2 1002) to support the roller chain 3.

[0122] The staggered transposition method of the rolling mill in the present invention comprises:

[0123] 1. Before performing the staggered transposition, make the following three preparations:

[0124] First, the position of the proximity switches and sensor plates must be calibrated. To improve work efficiency and shorten the mill's transit time, the positions of the four proximity switches and two sensor plates must be calibrated in advance.

[0125] 1) Align the center lines of the second mill base 402 and the 2# push-pull cylinder 5': drive the active sprocket mechanism 1 to move the roller chain 3 through the active sprocket 111. The active sprocket 111, the roller chain 3, and the driven sprocket 211 form a chain drive, which together pull the mill base 4 to move with the wheel 504 of the wheel device 5, completing the center line alignment of the second mill base 402 and the 2# push-pull cylinder 5'.

[0126] 2) Calibrate the positions of S1 and S2: Weld the bottom steel plate 601 to the side vertical plate of the trolley base 7, adjust and fix the proximity switch 1 608 and the proximity switch 2 609, and ensure that the proximity switch 1 608 is fixed at the S1 position and the proximity switch 2 609 is fixed at the S2 position.

[0127] 3) Calibrate the positions of T1 and T2: Place the second induction plate 611 at the S2 position, mark the position of one set of induction bottom plates 612 with a marker, and weld it to the side vertical plate of the rolling mill base 4 to ensure that the second induction plate 611 is fixed at the T2 position (for centerline positioning of the second rolling mill base 402), and the sensing points of the T2 position and the S2 position coincide; Place the first induction plate 610 at the left side of the S1 position, and the distance from the S1 position is L2, mark the position of the other set of induction bottom plates 612 with a marker, and weld it to the side vertical plate of the rolling mill base 4 to ensure that the first induction plate 610 is fixed at the T1 position (for centerline positioning of the rolling mill base 401).

[0128] 4) Calibrate the positions of S3 and S4: Place another set of proximity switches 609 to the right of position S2, with a distance of L1 from position S2. Mark the position of another set of bottom steel plates 601 with a marker, and weld them to the side vertical plates of the trolley base 7 to ensure that proximity switch 609 is fixed at position S4. Fix proximity switch 1 608 at position S3 on the left side of S4, with the distance between position S3 and position S4 being L5.

[0129] Secondly, the 2# transverse trolley 4' is driven to transport the repaired rolling mill from the repair station O5 to the O4 position of the 2# transverse trolley 4'.

[0130] Third, the rolling mill to be repaired is ready at position O1 of the cross-transport vehicle 1'.

[0131] 2. Two embodiments of the staggered transposition method are described:

[0132] 1. Example 1: One of the interleaving transposition methods:

[0133] Key idea: store the rolling mill to be repaired on the rolling mill base 1 401, and store the repaired rolling mill on the rolling mill base 2 402.

[0134] The first step is to transport the repaired mill to position O3. During the preparatory stage, the center lines of the mill base 2 402 and the 2# push-pull cylinder 5' are aligned, and the repaired mill has reached position O4. The piston rod of the 2# push-pull cylinder 5' extends, pushing the repaired mill from position O4 of the 2# transverse trolley 4' to position O3 of the 1# transverse trolley 3'. The piston rod head of the 2# push-pull cylinder 5' disengages and retracts to its shortest stroke, and the repaired mill is stored on the mill base 2 402.

[0135] The second step is to align the center lines of the rolling mill base 401 with the 1# push-pull cylinder 2'. The driving sprocket mechanism 1 that drives the 1# transverse trolley 3' drives the roller chain 3 via the driving sprocket 111. The driving sprocket 111, the roller chain 3, and the driven sprocket 211 form a chain drive, which together pulls the rolling mill base 4 to the right above the wheel 504 of the wheel assembly 5 until the center lines of the rolling mill base 401 and the 1# push-pull cylinder 2' are aligned (the center lines of the 1# push-pull cylinder 2', the rolling mill base 401, and the cross-transport trolley 1' are aligned horizontally). At this point, the sensing points at positions T1 and S3 coincide, and the center line of the rolling mill base 401 reaches position O2. Its maximum transverse displacement is L3 = L2 + L1.

[0136] The third step is to transport the mill to be overhauled to position O2. During the preparatory phase, the mill was already positioned at position O1 on the over-the-span transport vehicle 1'. Subsequently, the center lines of the mill base 401 and the first push-pull cylinder 2' were aligned. The piston rod of the first push-pull cylinder 2' was extended to its maximum position, pulling the mill from position O1 on the over-the-span transport vehicle 1' back to position O2 on the first transverse carriage 3'. The piston rod of the first push-pull cylinder 2' then disengaged and continued to retract to its minimum stroke, allowing the mill to be stored on the mill base 401.

[0137] In the fourth step, the repaired rolling mill returns to position O2. The driving sprocket mechanism 1, which drives the 1# transverse trolley 3', drives the roller chain 3 in the opposite direction via the driving sprocket 111. The driving sprocket 111, the roller chain 3, and the driven sprocket 211 form a chain drive, which together pulls the rolling mill base 4 to the left above the wheel 504 of the wheel assembly 5 until the centerline of the rolling mill base 2 402 and the 1# push-pull cylinder 2' are aligned (the centerlines of the 1# push-pull cylinder 2', the rolling mill base 2 402, and the cross-transport trolley 1' are aligned horizontally). At this point, the sensing points at positions T2 and S4 coincide, and the centerline of the rolling mill base 2 402 reaches position O2, having moved a transverse distance of L2.

[0138] Step 5: The repaired mill is transported to position O1. The piston rod of the 1# push-pull cylinder 2' gradually extends, pushing the repaired mill from position O2 on the 1# traverse trolley 3' toward position O1. When the piston rod reaches its maximum extension, the repaired mill reaches position O1 on the straddle carrier 1'. The piston rod head of the 1# push-pull cylinder 2' disengages and retracts to its minimum stroke. The repaired mill is then transported to the online rolling workshop via the straddle carrier 1', where it can resume online rolling operations, ensuring a rapid resumption of production.

[0139] Step 6: The mill to be inspected is transported to position O3. The driving sprocket mechanism 1, which drives the first transverse trolley 3', moves the roller chain 3 via the driving sprocket 111, which in turn pulls the mill base 4 to the left above the wheel 504 of the wheel assembly 5 until the centerline of the mill base 1 401 and the second push-pull cylinder 5' are aligned. At this point, the sensing points at positions T1 and S1 coincide, and the centerline of the mill base 1 401 reaches position O3, with the transverse displacement distance L1 - L2.

[0140] Step 7: The mill to be repaired is transported to position O4. The piston rod of the second push-pull cylinder 5' extends to its maximum stroke, pulling the mill from position O3 on the first transverse trolley 3' to position O4 on the second transverse trolley 4'. The piston rod head of the second push-pull cylinder 5' disengages and retracts to its minimum stroke, and the mill to be repaired reaches position O4.

[0141] Step 8: The mill to be repaired is transported to position O5. Drive the 2# transverse trolley 4' and then pull its mill base to drag the mill to be repaired from position O4 and gradually move towards position O5 until the mill to be repaired reaches the repair station position O5.

[0142] At this point, the staggered transposition method and steps described in this embodiment 1 are all completed.

[0143] 2. Example 2: Interlaced transposition method 2:

[0144] Key idea: store the rolling mill to be repaired on the rolling mill base 2 402, and store the repaired rolling mill on the rolling mill base 1 401.

[0145] The first step is to transport the repaired rolling mill to the O3 position. (1) During the preparation phase, the repaired rolling mill has reached the O4 position; drive the 1# transverse trolley 3' to move the rolling mill base 4 to the right until the center line of the rolling mill base 401 and the 2# push-pull cylinder 5' are aligned. At this time, the sensing points of the T1 position and the S1 position coincide, and the center line of the rolling mill base 401 reaches the O3 position, and its transverse distance is L2.

[0146] (2) Subsequently, the piston rod of the 2# push-pull cylinder 5' extends, pushing the repaired rolling mill from the O4 position of the 2# transverse trolley 4' to the O3 position of the 1# transverse trolley 3'. The piston rod head of the 2# push-pull cylinder 5' disengages and retracts to the shortest stroke, and the repaired rolling mill is stored on the rolling mill base 401.

[0147] The second step is to align the centerline of the mill base 2 402 with the centerline of the first push-pull cylinder 2'. Drive the first transverse trolley 3', which then drags the mill base 4 to the right above the wheel 504 of the wheel assembly 5 until the centerlines of the mill base 2 402 and the first push-pull cylinder 2' are aligned (the centerlines of the first push-pull cylinder 2', the mill base 2 402, and the cross-transport trolley 1' are aligned horizontally). At this point, the sensing points at positions T2 and S4 coincide, and the centerline of the mill base 2 402 reaches position O2, with the transverse displacement distance being L1 - L2.

[0148] The third step is to transport the mill to be overhauled to position O2. During the preparatory stage, the mill is already in position O1 on the overpass transport vehicle 1'. The piston rod of the 1# push-pull cylinder 2' is extended to its maximum position, pulling the mill from position O1 on the overpass transport vehicle 1' to position O2 on the 1# transverse trolley 3'. The piston rod of the 1# push-pull cylinder 2' is disengaged and further retracted to its minimum stroke. The mill is then stored on the second mill base 402.

[0149] Step 4: The repaired rolling mill is transported to position O2. The active sprocket mechanism 1, which drives the #1 transverse trolley 3', pulls the rolling mill base 4 further to the right until the centerline of the rolling mill base 401 and the #1 push-pull cylinder 2' are aligned (the centerlines of the #1 push-pull cylinder 2', the rolling mill base 401, and the cross-transport trolley 1' are aligned horizontally). At this point, the sensing points at positions T1 and S3 coincide, and the centerline of the rolling mill base 401 reaches position O2, having moved a transverse distance of L2.

[0150] Step 5: The repaired mill is transported to position O1. The piston rod of the 1# push-pull cylinder 2' gradually extends, pushing the repaired mill from position O2 on the 1# traverse trolley 3' toward position O1. When the piston rod reaches its maximum extension, the repaired mill reaches position O1 on the straddle carrier 1'. The piston rod head of the 1# push-pull cylinder 2' disengages and retracts to its minimum stroke. The repaired mill is then transported to the online rolling workshop via the straddle carrier 1', allowing for rapid resumption of production.

[0151] Step 6: Transport the mill to be inspected to position O3. Drive the #1 traverse trolley 3', pulling the mill base 4 leftward until the centerline of the second mill base 402 aligns with the centerline of the second push-pull cylinder 5'. At this point, the sensing points at positions T2 and S2 coincide, and the centerline of the second mill base 402 reaches position O3. The maximum traverse distance is L3 = L1 + L2.

[0152] Step 7: The mill to be repaired is transported to position O4. The piston rod of the second push-pull cylinder 5' extends to its maximum stroke, pulling the mill from position O3 on the first transverse trolley 3' to position O4 on the second transverse trolley 4'. The piston rod head of the second push-pull cylinder 5' disengages and retracts to its minimum stroke, and the mill to be repaired reaches position O4.

[0153] Step 8: The mill to be repaired is transported to position O5. Drive the 2# transverse trolley 4' and then pull its mill base to drag the mill to be repaired from position O4 and gradually move towards position O5 until the mill to be repaired reaches the repair station position O5.

[0154] At this point, the interleaving transposition method and steps described in this embodiment 2 are all completed.

[0155] The present invention is applicable to the rolling workshop of a hot rolling production line, and can complete the round-trip transportation of products, equipment and other objects between the offline maintenance workshop and the online rolling workshop, realizing the transfer function of products, equipment and other objects in different workshops.

[0156] The present invention provides a double-point transverse shift trolley and staggered transposition method. This technology is mainly used in the rolling workshop of the hot rolling production line. It has the advantages of high work efficiency and low capital investment in equipment transportation. It is suitable for the staggered transposition transportation of heavy-loaded objects such as products and equipment in different factory buildings.

[0157] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-point transverse trolley, characterized in that: include: A driving sprocket mechanism (1), a driven sprocket mechanism (2), a roller chain (3), a rolling mill base (4), a plurality of wheel devices (5), two sets of positioning detection systems (6), a trolley base (7), a plurality of guide rail brackets (8), a plurality of chain upper guide rails (9), and a plurality of chain lower guide rails (10); The driving sprocket mechanism (1) is mounted on a foundation and includes a driving sprocket (111); the driven sprocket mechanism (2) is mounted on a trolley base (7) and includes a driven sprocket (211); the driving sprocket mechanism (1) and the driven sprocket mechanism (2) are located on both sides of the trolley base (7), and the trolley base (7) is fixed on a foundation; The right side of the roller chain (3) is meshed with the driving sprocket (111), and the left side is meshed with the driven sprocket (211); the upper and lower sections of the roller chain (3) are supported by multiple groups of upper chain guide rails (9) and lower chain guide rails (10), respectively, and the upper and lower chain guide rails (9) and lower chain guide rails (10) facing each other form a group; The plurality of guide rail brackets (8) are fixed at intervals on the trolley base (7); one side of the rightmost group of chain upper guide rails (9) and chain lower guide rails (10) is connected to the driving sprocket mechanism (1), and the other side is connected to a group of guide rail brackets (8); one side of the leftmost group of chain upper guide rails (9) and chain lower guide rails (10) is connected to the driven sprocket mechanism (2), and the other side is connected to a group of guide rail brackets (8); a group of chain upper guide rails (9) and chain lower guide rails (10) is connected between two adjacent groups of guide rail brackets (8); The plurality of wheel devices (5) are installed in parallel and at intervals on the trolley base (7), and wheels (504) are provided on both sides of each wheel device (5). The rolling mill base (4) is connected to the roller chain (3), and the rolling mill base (4) is slidably connected to the wheels (504) of the plurality of wheel devices (5); The rolling mill base (4) includes a rolling mill base 1 (401) and a rolling mill base 2 (402), which are used to store the rolling mill to be repaired and the repaired rolling mill respectively; the center line distance between the rolling mill base 1 (401) and the rolling mill base 2 (402) is L2, the maximum lateral movement distance between the rolling mill base 1 (401) and the rolling mill base 2 (402) is L3, the lateral distance between the two sets of positioning detection systems (6) is L1, and L3 = L1 + L2; The two groups of positioning detection systems (6) are arranged at intervals, and each group of positioning detection systems (6) is arranged on the trolley base (7) and the rolling mill base (4) for positioning the movement of the rolling mill base 1 (401) and the rolling mill base 2 (402); By driving the active sprocket mechanism (1), the roller chain (3) is driven to move by the active sprocket (111), and the active sprocket (111), the roller chain (3), and the driven sprocket (211) form a chain drive, which together pulls the rolling mill base (4) to move above the wheel (504) of the wheel device (5), and finally realizes multiple alignment operations of the center lines of the rolling mill base 1 (401), the rolling mill base 2 (402) and the 1# push-pull cylinder (2'), and the 2# push-pull cylinder (5'). By staggered replacement of the rolling mill base 1 (401) and the rolling mill base 2 (402), the transfer function of the two rolling mills is realized.

2. The double-point transverse shift trolley according to claim 1, characterized in that: The driving sprocket mechanism (1) further comprises a driving sprocket support (101), a reduction motor (102), a fastening assembly three (103), a coupling one (104), a shaft one (105), a key one (106), a bearing seat one (107), a fastening assembly four (108), a bearing seat two (109), a stopper one (110), a protective cover one (112), an upper angle steel one (113), a lower angle steel one (114), an H-shaped steel one (115) and a lifting eye screw (116), wherein the driving sprocket support (101) is a welded structural member, wherein a bottom plate thereof is anchored on the foundation by bolts, an H-shaped steel one (115) is welded below the bottom plate, and the H-shaped steel one (115) is cast in the foundation by cement; A reduction motor (102) is placed on the right side of the driving sprocket support (101), and the reduction motor (102) is fixed to the bottom plate of the driving sprocket support (101) through a fastening component three (103); a lifting eye screw (116) is provided above the reduction motor (102), and a protective cover one (112) is welded to the outside of the reduction motor (102); The left output end of the reduction motor (102) is connected to the coupling 1 (104), and the left side of the coupling 1 (104) is connected to the shaft 1 (105) and is fixed in place by the key 1 (106); a driving sprocket (111) is provided between the bearing seat 1 (107) and the bearing seat 2 (109), and the outer edge of the driving sprocket (111) is engaged with the roller chain (3) to form a chain drive; the shaft 1 (105) passes through the bearing seat 1 (107), the driving sprocket (111) and the bearing seat 2 (109) from right to left in sequence, and the bearing seat 1 (107) and the bearing seat 2 (109) are respectively installed with bearings inside, and the bearings are both connected to the shaft 1 (105); The bearing seat 1 (107) and the bearing seat 2 (109) are respectively fixed to the side of the box of the active sprocket support (101) through the fastening component 4 (108), and the bottom plates of the bearing seat 1 (107) and the bearing seat 2 (109) are welded with a stopper 1 (110) on both the upper and lower sides. An upper angle steel 1 (113) and a lower angle steel 1 (114) are welded to the side of the box of the active sprocket support (101), and are located opposite to the bearing seat 1 (107) and the bearing seat 2 (109); the upper angle steel 1 (113) is connected to one side of the rightmost chain upper guide rail (9) and is fixed by the fastening component 2 (12); the lower angle steel 1 (114) is connected to one side of the rightmost chain lower guide rail (10) and is fixed by the fastening component 2 (12).

3. The double-point transverse shift trolley according to claim 1, characterized in that: The driven sprocket mechanism (2) further comprises a driven sprocket support (201), a protective cover (202), an upper angle steel (203), a lower angle steel (204), a shaft (205), a key (206), a bearing seat (3) (207), a fastening assembly (5) (208), a bearing seat (4) (209) and a stopper (210). The driven sprocket support (201) is a welded structural member, and its bottom plate is fixed to the trolley base (7) by bolts. The outer side of the driven sprocket support (201) is welded with the protective cover (202). The bearing seat (3) (207) and the bearing seat (4) (209) are fixed to the side of the box body of the driven sprocket support (201) by the fastening assembly (5) (208). The stopper (210) is welded to both the upper and lower sides of the bottom plates of the bearing seat (3) (207) and the bearing seat (4) (209). A driven sprocket (211) is provided between the bearing seat three (207) and the bearing seat four (209); the shaft two (205) passes through the bearing seat three (207), the driven sprocket (211) and the bearing seat four (209) from right to left in sequence; bearings are respectively installed inside the bearing seat three (207) and the bearing seat four (209); the bearings are both connected to the shaft two (205); the driven sprocket (211) and the shaft two (205) are fixed in position by key two (206); the outer edge of the driven sprocket (211) is engaged with the roller chain (3) to form a chain drive; The side of the box body of the driven sprocket support (201) is welded with an upper angle steel 2 (203) and a lower angle steel 2 (204), which are located opposite to the bearing seat 3 (207) and the bearing seat 4 (209); the upper angle steel 2 (203) is connected to one side of the leftmost chain upper guide rail (9) and is fixed by a fastening component 2 (12); the lower angle steel 2 (204) is connected to one side of the leftmost chain lower guide rail (10) and is fixed by a fastening component 2 (12).

4. The dual-point transverse shift trolley according to claim 1, characterized in that: The wheel assembly (5) comprises a third shaft (501), a fifth bearing seat (502), a sixth bearing seat (503), a wheel (504), a pressure plate (505), a screw (506), a third key (507), a sixth fastening assembly (508) and a first gasket assembly (509), wherein the centerline spacing between two adjacent sets of wheel assemblies (5) is L4; The shaft three (501) passes through the bearing seat five (502) and the bearing seat six (503) from left to right in sequence. The bearing seat five (502) and the bearing seat six (503) are respectively installed with bearings inside. The bearings are both connected with the shaft three (501). The bearing seat five (502) and the bearing seat six (503) are respectively fixed on the trolley base (7) through the fastening component six (508); the gasket group one (509) is respectively set between the bearing seat five (502) and the bearing seat six (503) and the trolley base (7), and the bearing seat five (502) is located on the left side of the bearing seat six (503); A set of wheels (504) are installed at each end of the third shaft (501), and the inner hole of the wheel (504) is fixed to the outer diameter of the third shaft (501) by a key (507); a set of pressure plates (505) are provided at each end of the axial outer side of the wheel (504), and are embedded in the end holes on both sides of the third shaft (501) by two screws (506); The projections of the multiple wheels (504) on each side of the multiple sets of wheel devices (5) in the moving direction of the rolling mill base (4) overlap, and the multiple sets of wheel devices (5) and the multiple sets of guide rail brackets (8) are arranged alternately.

5. The dual-point transverse shift trolley according to claim 1, characterized in that: The positioning detection system (6) includes a bottom steel plate (601), a bracket fastening assembly (602), a guide rail support frame (603), a guide rail (604), a guide rail fastening assembly (605), a switch support frame 1 (606), a switch support frame 2 (607), a proximity switch 1 (608), a proximity switch 2 (609), a sensing plate 1 (610), a sensing plate 2 (611), a sensing bottom plate (612) and a sensing plate fastening assembly (613); The bottom steel plate (601) is welded to the side vertical plate of the trolley base (7), and the guide rail support frame (603) is connected to the bottom steel plate (601) through the bracket fastening assembly (602); the guide rail (604) is welded and fixed to the upper part of the guide rail support frame (603), and the switch support frame 1 (606) and the switch support frame 2 (607) are respectively connected to the guide rail (604) through the guide rail fastening assembly (605); the position of the switch support frame 1 (606) is higher than the switch support frame 2 (607) and is located on the left side of the switch support frame 2 (607), and the horizontal distance between the switch support frame 1 (606) and the switch support frame 2 (607) is L5; A proximity switch 1 (608) is installed and fixed above the switch support frame 1 (606), and a proximity switch 2 (609) is installed and fixed above the switch support frame 2 (607); the proximity switch 1 (608) is located higher than the proximity switch 2 (609) and is located on the left side of the proximity switch 2 (609); the lateral spacing between the proximity switch 1 (608) and the proximity switch 2 (609) is L5, and the positions of the four groups of proximity switches in the two groups of positioning detection systems (6) are arranged from left to right in the order of S1, S2, S3, and S4; A sensing plate 1 (610) is provided at the position of the proximity switch 1 (608), and a sensing plate 2 (611) is provided at the position of the proximity switch 2 (609). The sensing plate 1 (610) and the sensing plate 2 (611) are both fixed to the sensing bottom plate (612) via a sensing plate fastening assembly (613). The sensing bottom plate (612) is welded and fixed to the side vertical plate of the rolling mill base (4); the sensing plate 1 (610) and the sensing plate 2 (611) move laterally on the wheel device (5) together with the rolling mill base (4); the sensing plate 1 (610) and the sensing plate 2 (611) move laterally on the wheel device (5) together with the rolling mill base (4); the sensing plate 1 (61 0) is flush with the top of the induction plate 2 (611), and the bottom of the induction plate 2 (611) is lower than the bottom of the induction plate 1 (610); the induction plate 1 (610) is located on the left side of the induction plate 2 (611), the corresponding position of the induction plate 1 (610) is T1, and the corresponding position of the induction plate 2 (611) is T2; the lateral distance between the induction plate 1 (610) at the T1 position and the first group of proximity switches 1 (608) at the leftmost side at the S1 position is L2, which is equal to the distance between the center lines of the rolling mill base 1 (401) and the rolling mill base 2 (402).

6. The dual-point transverse shift trolley according to claim 1, characterized in that: The trolley base (7) is an integrally welded type, comprising a bottom H-shaped steel (701), a left support portion (702), a middle support portion (703) and an upper support portion (704). The bottom H-shaped steel (701) is located at the bottom of the trolley base (7), with one group provided on each side, and is cast together with the foundation through a grouting layer. The left support portion (702) is located at the left end of the trolley base (7), and its top surface is fastened to the bottom plate of the driven sprocket support (201) of the driven sprocket mechanism (2) by bolts; The intermediate support portion (703) is evenly arranged in the middle area of ​​the trolley base (7), and its H-shaped steel top is fastened to the guide rail bracket (8) through a fastening component (11); The upper end support portion (704) is evenly arranged in the upper area of ​​the trolley base (7), and its top surface is connected to the wheel device (5) through a fastening component six (508).

7. The dual-point transverse shift trolley according to claim 1, characterized in that: The guide rail bracket (8) comprises an upper angle steel three (801), a lower angle steel three (802) and a box body (803), wherein the box body (803) is a welded structure, and its bottom is fastened to the middle support portion (703) of the trolley base (7) via a fastening assembly one (11); a set of upper angle steel three (801) and a set of lower angle steel three (802) are welded on both sides of each box body (803), and the upper angle steel three (801) is located above the lower angle steel three (802); The upper angle steel 3 (801) of the rightmost set of guide rail brackets (8) is connected to the upper angle steel 1 (113) of the driving sprocket mechanism (1) via the upper chain guide rail (9), and the lower angle steel 3 (802) is connected to the lower angle steel 1 (114) of the driving sprocket mechanism (1) via the lower chain guide rail (10); The upper angle steel 3 (801) of the leftmost set of guide rail brackets (8) is connected to the upper angle steel 2 (203) of the driven sprocket mechanism (2) via the upper chain guide rail (9), and the lower angle steel 3 (802) is connected to the lower angle steel 2 (204) of the driven sprocket mechanism (2) via the lower chain guide rail (10); The three upper angle steels (801) of each set of guide rail brackets (8) in the middle are connected by an upper chain guide rail (9), and the three lower angle steels (802) are connected by a lower chain guide rail (10); The upper chain guide rail (9) and the lower chain guide rail (10) are both fixed together by fastening assembly 2 (12).

8. The dual-point transverse shifting trolley according to any one of claims 1-3 and 7, characterized in that: The chain upper guide rail (9) and the chain lower guide rail (10) have the same structure. The chain upper guide rail (9) includes a connecting steel plate (901), a channel steel (902) and a top steel plate (903). The chain lower guide rail (10) includes a connecting steel plate (1001), a channel steel (1002) and a top steel plate (1003). A fixed channel steel (902) is welded above the connecting steel plate (901), and a top steel plate (903) is welded above the channel steel (902); a channel steel (1002) is welded above the connecting steel plate (1001), and a top steel plate (1003) is welded above the channel steel (1002); The connecting steel plate 1 (901) is provided in two groups, one on the left and one on the right. The connecting steel plate 1 (901) is used to be fixed to the upper angle steel 1 (113) of the driving sprocket mechanism (1), the upper angle steel 2 (203) of the driven sprocket mechanism (2), and the upper angle steel 3 (801) of the guide rail bracket (8) through the fastening assembly 2 (12); The second connecting steel plate (1001) is provided in two groups, one on the left and one on the right. The second connecting steel plate (1001) is used to be fixed with the lower angle steel (114) of the driving sprocket mechanism (1), the lower angle steel (204) of the driven sprocket mechanism (2), and the lower angle steel (802) of the guide rail bracket (8) through the second fastening component (12).

9. A staggered transposition method for a dual-point transverse trolley as claimed in claim 5, characterized in that: The rolling mill to be repaired is stored on the rolling mill base 1 (401), and the repaired rolling mill is stored on the rolling mill base 2 (402), which specifically includes the following steps: Step 1: Before performing the staggered transposition, calibrate the positions of the proximity switches and the sensor plates, including calibrating the positions of 4 groups of proximity switches and 2 groups of sensor plates, i.e., calibrating the positions of S1, S2, S3, S4, T1, and T2; Step 2, transport the repaired rolling mill to the O3 position: in the preparation stage, the center lines of the rolling mill base 2 (402) and the 2# push-pull cylinder (5') have been aligned, and the repaired rolling mill has reached the O4 position; the piston rod of the 2# push-pull cylinder (5') is extended, and the repaired rolling mill is pushed from the O4 position of the 2# transverse trolley (4') to the O3 position of the 1# transverse trolley (3'), and the piston rod head of the 2# push-pull cylinder (5') is disengaged and retracted to the shortest stroke, and the repaired rolling mill is stored on the rolling mill base 2 (402); Step 3, aligning the center lines of the mill base 1 (401) and the 1# push-pull cylinder (2'): the driving sprocket mechanism (1) driving the 1# transverse trolley (3') drives the roller chain (3) to move through the driving sprocket (111), and the driving sprocket (111), the roller chain (3), and the driven sprocket (211) form a chain drive, and together pull the mill base (4) to move rightward on the upper part of the wheel (504) of the wheel device (5) until the center lines of the mill base 1 (401) and the 1# push-pull cylinder (2') are aligned, wherein the center lines of the 1# push-pull cylinder (2'), the mill base 1 (401), and the cross-transport trolley (1') are aligned on a horizontal line; at this time, the sensing points of the T1 position and the S3 position coincide, and the center line of the mill base 1 (401) reaches the O2 position, and its maximum transverse movement distance is L3=L2+L1; Step 4, transporting the rolling mill to be repaired to the O2 position: During the preparation stage, the rolling mill to be repaired has been prepared at the O1 position of the cross-transport vehicle (1'), and the center line alignment operation between the rolling mill base 1 (401) and the 1# push-pull cylinder (2') has been completed; the piston rod of the 1# push-pull cylinder (2') is extended to the maximum position, and the rolling mill to be repaired is pulled back from the O1 position of the cross-transport vehicle (1') to the O2 position of the 1# transverse trolley (3'), and the piston rod head of the 1# push-pull cylinder (2') is disengaged and continues to retract to the shortest stroke, and the rolling mill to be repaired is stored on the rolling mill base 1 (401); Step 5, the repaired rolling mill returns to the O2 position: the driving sprocket mechanism (1) of the 1# transverse trolley (3') drives the roller chain (3) to move in the opposite direction through the driving sprocket (111), and the driving sprocket (111), the roller chain (3), and the driven sprocket (211) form a chain drive, which together pulls the rolling mill base (4) to move leftward on the upper part of the wheel (504) of the wheel device (5) until the center lines of the rolling mill base 2 (402) and the 1# push-pull cylinder (2') are aligned, that is, the center lines of the 1# push-pull cylinder (2'), the rolling mill base 2 (402), and the cross-transport trolley (1') are aligned on a horizontal line; at this time, the sensing points of the T2 position and the S4 position coincide, and the center line of the rolling mill base 2 (402) reaches the O2 position, and its transverse movement distance is L2; Step 6: The repaired rolling mill is transported to the O1 position: the piston rod of the 1# push-pull cylinder (2') is gradually extended, pushing the repaired rolling mill from the O2 position of the 1# transverse trolley (3') to the O1 position step by step. When the piston rod is extended to the maximum stroke, the repaired rolling mill reaches the O1 position of the cross-transport trolley (1'), and the piston rod head of the 1# push-pull cylinder (2') is disengaged and retracted to the shortest stroke; Afterwards, the repaired rolling mill is transported to the online rolling workshop via a straddle transport vehicle (1') and can be used for online rolling work to ensure rapid resumption of production; Step 7: The rolling mill to be repaired is transported to the O3 position: the active sprocket mechanism (1) of the 1# transverse trolley (3') is driven to move the roller chain (3) through the active sprocket (111), thereby pulling the rolling mill base (4) to move to the left on the upper part of the wheel (504) of the wheel device (5) until the center line of the rolling mill base (401) is aligned with the center line of the 2# push-pull cylinder (5'); at this time, the sensing point of the T1 position coincides with the sensing point of the S1 position, and the center line of the rolling mill base (401) reaches the O3 position, and its transverse movement distance is L1-L2; Step 8: The rolling mill to be repaired is transported to the O4 position: the piston rod of the 2# push-pull cylinder (5') is extended to the maximum stroke, and the rolling mill to be repaired is pulled back from the O3 position of the 1# transverse trolley (3') to the O4 position of the 2# transverse trolley (4'), and the piston rod head of the 2# push-pull cylinder (5') is disengaged and retracted to the shortest stroke, and the rolling mill to be repaired reaches the O4 position; Step 9: Transport the mill to be repaired to position O5: Drive the 2# transverse trolley (4') and then pull its mill base to drag the mill to be repaired from position O4, and gradually move towards position O5 until the mill to be repaired reaches the repair station position O5; At this point, the interleaving process ends.

10. A staggered position transposition method of a dual-point transverse trolley as claimed in claim 5, characterized in that: The rolling mill to be repaired is stored on the second rolling mill base (402), and the repaired rolling mill is stored on the first rolling mill base (401), which specifically includes the following steps: S1. Before the staggered transposition, the positions of the proximity switches and the induction plates are calibrated, including the position calibration of 4 groups of proximity switches and 2 groups of induction plates, i.e. the positions of S1, S2, S3, S4, T1 and T2; S2. The repaired rolling mill is transported to position O3: S21. During the preparation phase, the repaired rolling mill has reached the O4 position; the 1# transverse trolley (3') is driven to move the rolling mill base (4) to the right until the center line of the rolling mill base (401) is aligned with the center line of the 2# push-pull cylinder (5'); at this time, the sensing point of the T1 position coincides with the sensing point of the S1 position, and the center line of the rolling mill base (401) reaches the O3 position, and its transverse movement distance is L2; S22. Subsequently, the piston rod of the 2# push-pull cylinder (5') is extended, pushing the repaired rolling mill from the O4 position of the 2# transverse trolley (4') to the O3 position of the 1# transverse trolley (3'), and the piston rod head of the 2# push-pull cylinder (5') is disengaged and retracted to the shortest stroke, and the repaired rolling mill is stored on the rolling mill base (401); S3, align the center line of the second rolling mill base (402) with the center line of the 1# push-pull cylinder (2'); drive the 1# transverse trolley (3') and then drag the rolling mill base (4) to move rightward on the upper part of the wheel (504) of the wheel device (5) until the center line of the second rolling mill base (402) and the 1# push-pull cylinder (2') are aligned, that is, the center lines of the 1# push-pull cylinder (2'), the second rolling mill base (402) and the cross-transport trolley (1') are aligned on a horizontal line; at this time, the sensing point of the T2 position coincides with the sensing point of the S4 position, and the center line of the second rolling mill base (402) reaches the O2 position, and its transverse movement distance is L1-L2; S4. The rolling mill to be repaired is transported to the O2 position: During the preparation stage, the rolling mill to be repaired is ready at the O1 position of the cross-transport vehicle (1'); the piston rod of the 1# push-pull cylinder (2') is extended to the maximum position, and the rolling mill to be repaired is pulled back from the O1 position of the cross-transport vehicle (1') to the O2 position of the 1# transverse trolley (3'); the piston rod head of the 1# push-pull cylinder (2') is disengaged and continues to retract to the shortest stroke, and the rolling mill to be repaired is stored on the second rolling mill base (402); S5. The repaired rolling mill is transported to the O2 position: the active sprocket mechanism (1) of the 1# transverse trolley (3') is driven to pull the rolling mill base (4) to continue to move to the right until the center lines of the rolling mill base (401) and the 1# push-pull cylinder (2') are aligned, that is, the center lines of the 1# push-pull cylinder (2'), the rolling mill base (401) and the cross-transport trolley (1') are aligned on a horizontal line; at this time, the sensing point of the T1 position coincides with the sensing point of the S3 position, and the center line of the rolling mill base (401) reaches the O2 position, and its transverse movement distance is L2; S6. The repaired rolling mill is transported to the O1 position: the piston rod of the 1# push-pull cylinder (2') is gradually extended, pushing the repaired rolling mill from the O2 position of the 1# transverse trolley (3') to the O1 position step by step. When the piston rod is extended to the maximum stroke, the repaired rolling mill reaches the O1 position of the cross-transport trolley (1'), and the piston rod head of the 1# push-pull cylinder (2') is disengaged and retracted to the shortest stroke; then, the repaired rolling mill is transported to the online rolling workshop via the cross-transport trolley (1'), and production can be quickly resumed; S7, the rolling mill to be repaired is transported to the O3 position: the 1# transverse trolley (3') is driven to pull the rolling mill base (4) to move to the left until the center line of the rolling mill base 2 (402) is aligned with the center line of the 2# push-pull cylinder (5'); at this time, the sensing point of the T2 position coincides with the sensing point of the S2 position, and the center line of the rolling mill base 2 (402) reaches the O3 position, and its maximum transverse distance is L3 = L1 + L2; S8. The rolling mill to be repaired is transported to the O4 position: the piston rod of the 2# push-pull cylinder (5') is extended to the maximum stroke, and the rolling mill to be repaired is pulled back from the O3 position of the 1# transverse trolley (3') to the O4 position of the 2# transverse trolley (4'). The piston rod head of the 2# push-pull cylinder (5') is disengaged and retracted to the shortest stroke, and the rolling mill to be repaired reaches the O4 position; S9, transport the mill to be repaired to position O5: drive the 2# transverse trolley (4') and then pull its mill base to drag the mill to be repaired from position O4, and gradually move it towards position O5 until the mill to be repaired reaches position O5 of the repair station; At this point, the interleaving process ends.

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