Semi-automatic cutting machine track with adjustable curvature

Abstract

The curvature-adjustable semi-automatic cutting machine track is composed of a plurality of tracks, each track comprises a radian adjusting mechanism, a first thin steel plate and a second thin steel plate, the first thin steel plates and the second thin steel plates are connected through a plurality of connecting beams, and the top edges of the first thin steel plates and the top edges of the second thin steel plates are advancing tracks of wheels of a semi-automatic cutting trolley. The first thin steel plate is perpendicularly and rigidly fixed to the connecting beams, and the second thin steel plate is perpendicularly and rigidly fixed to the connecting beams at the two ends of the length direction of the second thin steel plate and movably connected with the other connecting beams. The radian adjusting mechanism is used for adjusting the distance between the ends, connected with the second thin steel plate, of the connecting beams so as to adjust the curvature. The track is light and handy in structure, good in portability, capable of meeting cutting of small-curvature sector-shaped steel plates and meeting the blanking and cutting requirements of different specifications of super-large-diameter sector-shaped steel plates, wide in application range, large in curvature adjusting range and suitable for linear types with the minimum radius ranging from 4 meters to infinity.

Description

Technical Field

[0001] The present invention belongs to the technical field of manufacturing large pressure vessels, and particularly relates to a semi-automatic cutting machine track with adjustable curvature. Background Art

[0002] A whole conical cylinder body in the pressure vessel manufacturing industry is usually formed by butt-welding conical cylinder sections with different diameters. Each cylinder section is rolled into shape after being spliced by one or more fan-shaped steel plates according to the diameter size. These fan-shaped steel plates are obtained by lofting and cutting on a square steel plate.

[0003] Currently, there are three conventional cutting methods for fan-shaped steel plates: fully automatic, semi-automatic, and pure manual operation. The fully automatic method generally uses large gantry numerical control cutting equipment, with a large one-time investment and the need for a fixed installation site. The pure manual operation method has the lowest cost, but the cut is uneven and the overall quality is poor. The semi-automatic method generally uses a semi-automatic cutting trolley (i.e., a semi-automatic cutting machine). It is simple to operate, has a low cost, and good cut quality, and is the most cost-effective method. When using a semi-automatic cutting trolley for cutting, a straight track equipped on the trolley can be used for cutting the straight part, and a method of installing a center positioning rod on the trolley can be used for cutting the curved part to achieve the cutting of fan-shaped steel plates. However, this method is limited by the construction site, and the length of the rod cannot be too long (usually not exceeding 5 meters), and it is only suitable for use when the curvature is large. The curvature of the fan-shaped steel plate of the conical cylinder section is often very small, and the maximum radius can reach 50 meters. The existing semi-automatic cutting trolley is limited by the site, cannot use the center positioning method, and there is no suitable arc track to solve the walking problem, and it cannot meet the cutting requirements of the super-large diameter fan-shaped steel plate used for rolling the conical cylinder section. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a semi-automatic cutting machine track with adjustable curvature in view of the deficiencies of the prior art. It has a light structure, good portability, a wide application range, and a large adjustable range of curvature, and is applicable to both a minimum radius of 4 meters and an infinite straight line.

[0005] The technical solution adopted by the present invention to solve the above technical problems is as follows: A semi-automatic cutting machine track with adjustable curvature, the semi-automatic cutting machine track is composed of several tracks, each track includes a radian adjustment mechanism, and arc-shaped first thin steel plates and second thin steel plates arranged in parallel. The first thin steel plate and the second thin steel plate are vertically arranged and connected by a number of connecting beams arranged at equal distances along their lengths. The bottom surfaces of the several connecting beams are flush with the bottom edges of the first thin steel plate and the second thin steel plate. The top edges of the first thin steel plate and the second thin steel plate are the traveling tracks of the wheels of the semi-automatic cutting trolley. The first thin steel plate is vertically and rigidly fixed to the several connecting beams. The second thin steel plate is vertically and rigidly fixed to the connecting beams at both ends in its length direction. The second thin steel plate is movably connected to the remaining connecting beams. The second thin steel plate is respectively provided with first long circular holes at the joints with the remaining connecting beams. First rivets are inserted into the first long circular holes. The second thin steel plate and the remaining connecting beams are connected by the first rivets. The second thin steel plate is formed by overlapping two thin steel plates. The two thin steel plates are respectively provided with second long circular holes at the overlapping part. Second rivets are inserted into the second long circular holes. The two thin steel plates are connected by the second rivets. The radian adjustment mechanism is used to adjust the mutual distance of one end of the several connecting beams connected to the second thin steel plate, and further adjust the curvature of the first thin steel plate and the second thin steel plate.

[0006] The working principle of the semi-automatic cutting machine track of the present invention: Regarding the first thin steel plate as an arc of a circle, the center line of each connecting beam vertically and rigidly fixed to the first thin steel plate is a part of the radius of the circle. When the length of the first thin steel plate remains unchanged, by changing the mutual distance of one end of the several connecting beams connected to the second thin steel plate through the radian adjustment mechanism, the position of the center line of each connecting beam is changed, thereby changing the position of the center of the circle. Since each connecting beam is vertically and rigidly fixed to the first thin steel plate, the change in the position of the center of the circle will cause the first thin steel plate and the second thin steel plate to change their curvature accordingly.

[0007] Under the condition that the semi-automatic cutting trolley of the present invention cannot rely on the restriction of the center of the circle, by utilizing the characteristics of uniform bending deformation and high resilience of the parallel first thin steel plate and second thin steel plate, after evenly dividing the first thin steel plate into several small segments by several connecting beams vertically and rigidly fixed to the first thin steel plate, the opening angle of one end of the several connecting beams connected to the second thin steel plate is changed through the radian adjustment mechanism to change the radian of the first thin steel plate and the second thin steel plate, so as to achieve the purpose of curvature adjustment.

[0008] The two ends of the second thin steel plate are rigidly fixed perpendicular to the connecting beams at both ends in its length direction, and the second thin steel plate is formed by overlapping two thin steel plates. The overlapping part is matched with the second rivet through the second oblong hole. At the same time, the second thin steel plate is respectively matched with the first rivet through the first oblong hole at the joints with the other connecting beams. Thus, while adjusting the curvature, the two thin steel plates can not only slide relative to each other, but also will not have too large a gap. There is a corresponding length compensation amount, and it will not affect the connection problem during track splicing.

[0009] Preferably, the arc adjustment mechanism includes a plurality of serially connected adjustment components. The plurality of serially connected adjustment components are arranged on the side of the several connecting beams close to the second thin steel plate. One set of the adjustment components is arranged on each connecting beam. Each set of the adjustment components includes a bracket, a universal joint and two sleeves. The bracket is fixed on one of the connecting beams. The bracket is a hollow square tube. The two sleeves are respectively installed on both sides in the length direction of the bracket in a horizontally swingable manner. One end of each sleeve is processed with an internal threaded hole, and the other end is processed with an internal hole. A notch is opened in the middle of the bracket. The universal joint is arranged in the notch. The two ends of the universal joint are respectively provided with internal hexagonal deep holes. The outer diameters of the two ends of the universal joint are adapted to the inner diameters of the internal holes. The two ends of the universal joint respectively extend into the two internal holes. An adjustment screw is connected between two adjacent sets of the adjustment components. Reverse threaded sections and forward threaded sections are respectively arranged on both sides of the adjustment screw. The internal threaded holes of two adjacent sets of the adjustment components are arranged facing each other. The forward threaded section and the reverse threaded section are respectively threadedly connected with the internal threaded holes of two adjacent sets of the adjustment components. Hexagonal rod sections are respectively connected to the outsides of the reverse threaded section and the forward threaded section. The outer diameters of the hexagonal rod sections are adapted to the inner diameters of the internal hexagonal deep holes. The hexagonal rod section on one side of the adjustment screw is fixed in the internal hexagonal deep hole of one set of the adjustment components through a screw. The hexagonal rod section on the other side of the adjustment screw is telescopically arranged in the internal hexagonal deep hole of the other set of the adjustment components. The above arc adjustment mechanism adopts a unique series design structure, which is simple, convenient and flexible to operate. By using the combination of the bracket, the universal joint, the sleeves, the adjustment screw, etc., the components not on the same straight line can not only continuously change the axis direction at multiple angles while rotating synchronously, but also evenly adjust the length of each axis section. By rotating the adjustment screw with the forward threaded section and the reverse threaded section, and adjusting the length of one axis section through one set of the adjustment components, the lengths of other axis sections can also be changed and adjusted equally at the same time. That is, as long as one set of the adjustment components is adjusted, all the adjustment components can be driven to act synchronously. This not only solves the problem of synchronous transmission of non-collinear axes, but also solves the length compensation problem in the process of forward and reverse thread adjustment, ensures the adjustment accuracy, saves the adjustment steps, and finally achieves the purpose of making the overall track curvature change basically consistent.

[0010] Adjusting the opening angle of each group of connecting beams individually is relatively simple in structure. It can be achieved by adding a left - hand and right - hand screw rod in the middle of each group. However, this operation method of adjusting each gear one by one is not only troublesome, but also the adjustment accuracy may vary. How to achieve linkage control with only a simple mechanical structure is a difficult problem that needs to be solved urgently in this invention. Due to the characteristics of the arc structure changing at any time, the sets of adjusting components are not on the same straight line. They present an arc - like pattern formed by connecting multiple chords that change with the diameter. Moreover, with different arc adjustments, the length of each chord will also change. For this reason, we have considered various solutions, such as different styles like hinge - type retractable fence gates and folding fan surfaces, but none of them can meet the requirements. After repeated design and verification, this invention creatively proposes an adjustment assembly composed of a bracket, a universal joint, and two sleeves, in combination with an adjustment screw rod, etc. Utilizing the steering function of the universal joint and the telescopic function of the hexagonal rod section, it effectively solves the linkage problem of track curvature adjustment.

[0011] Preferably, on both sides of the bracket in the length direction, two pairs of through - holes are symmetrically arranged. Each pair of the through - holes is concentric up and down. On the outer wall of each sleeve, a pair of coaxial rotating shafts is provided up and down. The pair of rotating shafts is rotatably installed in a pair of the through - holes. During the process of adjusting the curvature, the sleeve can swing horizontally at a certain angle with the rotating shaft as the fulcrum.

[0012] Preferably, at the top of the overlapping part of the two thin steel plates, outer edge inclined - down edges are respectively provided. The outer edge inclined - down edges on the two thin steel plates are overlapped and transitionally connected to minimize the total thickness of the overlapping part of the two thin steel plates and avoid affecting the travel of the semi - automatic cutting trolley.

[0013] Preferably, one end of the universal joint is a long end with a longer length, and the other end is a short end with a shorter length. The short end of the universal joint is fixedly connected to the corresponding hexagonal rod section by screws, and the long end of the universal joint is movably connected to the corresponding hexagonal rod section. The two ends of the universal joint are designed with different lengths, and the long end is movably connected to the hexagonal rod section while the short end is fixed, which is convenient for assembly and can prevent misassembly. While enabling the hexagonal rod section to freely expand and contract, it does not affect the torque transmission function.

[0014] Preferably, an adjustment handwheel for rotating the adjustment screw rod is installed on the adjustment screw rod.

[0015] Preferably, the overlapping part of the two thin steel plates is arranged in the middle of the second thin steel plate. The adjustment assembly, the adjustment screw rod, and the adjustment handwheel are symmetrically arranged with the overlapping part of the two thin steel plates as the center, so as to make the curvature adjustment operation more convenient and fast.

[0016] Preferably, splicing positioners are fixed on the connecting beams at both ends of the second thin steel plate in the length direction, and the semi-automatic cutting machine track is composed of multiple tracks spliced together. When the cutting curve is large, two or three tracks should be used alternately, which is convenient for splicing and can prevent the movement of the semi-automatic cutting trolley from being affected due to misalignment.

[0017] Preferably, each of the connecting beams is made of flat steel, and each of the connecting beams is a U-shaped with the two ends folded upwards to facilitate the installation of the first thin steel plate and the second thin steel plate. Both the first thin steel plate and the second thin steel plate are spring steel plates, and the length of a single semi-automatic cutting machine track is 1.4 - 1.6 meters. The spring steel plate has good resilience and is not easily deformed, which is beneficial to ensuring the curvature adjustment effect of the semi-automatic cutting machine track of the present invention. Designing the length of a single semi-automatic cutting machine track to be 1.4 - 1.6 meters is convenient for taking and adjusting in actual use.

[0018] Preferably, a curvature reference scale is provided on the outer surface of the second thin steel plate to conveniently indicate the approximate diameter data during curvature adjustment as a pre-adjustment reference.

[0019] Compared with the prior art, the present invention has the following advantages: The semi-automatic cutting machine track of the present invention has a light structure and good portability. In the blanking and cutting process of a fan-shaped steel plate with an ultra-large diameter (more than 15 meters), under the condition that the semi-automatic cutting trolley cannot rely on the restriction condition of the center of the circle, by utilizing the characteristics of uniform bending deformation and high resilience of the parallel first thin steel plate and the second thin steel plate, the top edges of the first thin steel plate and the second thin steel plate are used as the curved traveling track of the wheels of the semi-automatic cutting trolley. Moreover, by adjusting the curvature of the first thin steel plate and the second thin steel plate, the curvature of the traveling track of the wheels of the semi-automatic cutting trolley can be correspondingly adjusted, so as to meet the cutting of a fan-shaped steel plate with a small curvature and realize the blanking and cutting requirements of ultra-large diameter fan-shaped steel plates of different specifications. The semi-automatic cutting machine track of the present invention has a wide application range and a large curvature adjustment range, and can be applied to both the minimum radius of 4 meters and the infinite straight line type. When cutting the inner arc and the outer arc, only the track needs to be changed in direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the external view of a single track in the embodiment;

[0021] Figure 2 is Figure 1 the enlarged view in the direction of A in

[0022] Figure 3 is the corresponding Figure 2 structural detail cross-sectional view;

[0023] Figure 4 is the enlarged Figure 3 cross-sectional view taken along B - B in

[0024] Figure 5 Schematic diagram of the assembly of the universal joint and the hexagonal rod segments at both ends thereof in the embodiment;

[0025] The specific reference signs in the figure are as follows:

[0026] 11 - First thin steel plate, 12 - Second thin steel plate, 13 - Splicing locator, 14 - Curvature reference scale, 15 - First oblong hole, 16 - First rivet, 17 - Second oblong hole, 18 - Second rivet, 19 - Outer edge inverted edge, 2 - Connecting beam, 21 - Bracket, 22 - Through hole, 23 - Notch, 3 - Adjusting assembly, 30 - Adjusting screw, 31 - Sleeve, 32 - Rotating shaft, 33 - Universal joint, 34 - Hexagonal rod segment, 35 - Adjusting handwheel, 36 - Internal thread hole, 37 - Inner hole, 38 - Internal hexagonal deep hole, 41 - Reverse thread section, 42 - Forward thread section, 43 - Long end, 44 - Short end. Specific embodiments

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] The curvature - adjustable semi - automatic cutting machine track of the embodiment is composed of multiple tracks spliced together. As Figures 1 - 5 shown, each track includes a radian adjusting mechanism, the arc - shaped first thin steel plate 11 and the second thin steel plate 12 arranged in parallel. The outer surface of the second thin steel plate 12 is provided with a curvature reference scale 14. The first thin steel plate 11 and the second thin steel plate 12 are vertically arranged and connected by a number of connecting beams 2 arranged at equal distances along their lengths. The bottom surfaces of the number of connecting beams 2 are flush with the bottom edges of the first thin steel plate 11 and the second thin steel plate 12. The top edges of the first thin steel plate 11 and the second thin steel plate 12 are the traveling tracks for the wheels of the semi - automatic cutting trolley. The first thin steel plate 11 is vertically and rigidly fixed to the number of connecting beams 2. The second thin steel plate 12 is vertically and rigidly fixed to the connecting beams 2 at both ends of its length direction. Splicing locators 13 are fixed on the connecting beams 2 at both ends of the length direction of the second thin steel plate 12. The second thin steel plate 12 is movably connected to the remaining connecting beams 2. First oblong holes 15 are respectively opened at the connection positions of the second thin steel plate 12 and the remaining connecting beams 2. First rivets 16 are inserted into the first oblong holes 15. The second thin steel plate 12 and the remaining connecting beams 2 are connected by the first rivets 16. The second thin steel plate 12 is formed by overlapping two thin steel plates. Second oblong holes 17 are respectively opened at the overlapping positions of the two thin steel plates. Second rivets 18 are inserted into the second oblong holes 17. The two thin steel plates are connected by the second rivets 18. The radian adjusting mechanism is used to adjust the mutual distance between one end of the number of connecting beams 2 connected to the second thin steel plate 12, thereby adjusting the curvature of the first thin steel plate 11 and the second thin steel plate 12.

[0029] In this embodiment, the radian adjustment mechanism includes a plurality of serially connected adjustment components 3. The plurality of serially connected adjustment components 3 are arranged on one side of several connecting beams 2 close to the second thin steel plate 12. One set of adjustment components 3 is arranged on each connecting beam 2. Each set of adjustment components 3 includes a bracket 21, a universal joint 33 and two sleeves 31. The bracket 21 is fixed on one connecting beam 2. The bracket 21 is a hollow square tube. The two sleeves 31 are respectively installed on both sides in the length direction of the bracket 21 in a horizontally swingable manner. Specifically, two pairs of through holes 22 are symmetrically arranged on both sides in the length direction of the bracket 21. Each pair of through holes 22 is concentrically arranged up and down. A pair of rotating shafts 32 coaxial up and down are provided on the outer wall of each sleeve 31. The pair of rotating shafts 32 are rotatably installed in a pair of through holes 22. One end of each sleeve 31 is machined with an M8 internal threaded hole 36, and the other end is machined with a Φ12 inner hole 37. A notch 23 is opened in the middle of the bracket 21. The universal joint 33 is arranged in the notch 23. 6.2mm internal hexagon deep holes 38 are respectively provided at both ends of the universal joint 33. The outer diameters of both ends of the universal joint 33 are adapted to the aperture of the inner hole 37. Both ends of the universal joint 33 respectively extend into the two inner holes 37. An adjustment screw 30 is connected and arranged between two adjacent sets of adjustment components 3. An adjustment handwheel 35 for rotating the adjustment screw 30 is installed on the adjustment screw 30. Reverse threaded sections 41 with M8 and forward threaded sections 42 with M8 are respectively provided on both sides of the adjustment screw 30. The internal threaded holes 36 of two adjacent sets of adjustment components 3 face each other. The forward threaded section 42 and the reverse threaded section 41 are respectively threadedly connected to the internal threaded holes 36 of two adjacent sets of adjustment components 3. 6mm hexagonal rod sections 34 are respectively connected to the outer sides of the reverse threaded section 41 and the forward threaded section 42. The outer diameter of the hexagonal rod section 34 is adapted to the aperture of the internal hexagon deep hole 38. The hexagonal rod section 34 on one side of the adjustment screw 30 is fixed in the internal hexagon deep hole 38 of one set of adjustment components 3 by a screw. The hexagonal rod section 34 on the other side of the adjustment screw 30 is telescopically arranged in the internal hexagon deep hole 38 of the other set of adjustment components 3. Specifically, one end of the universal joint 33 is a long end 43 with a longer length, and the other end is a short end 44 with a shorter length. The short end 44 of the universal joint 33 is fixedly connected to the corresponding hexagonal rod section 34 by a screw. The long end 43 of the universal joint 33 is movably connected to the corresponding hexagonal rod section 34.

[0030] In this embodiment, outer edge inverted edges 19 are respectively provided at the tops of the overlapping parts of the two thin steel plates. The outer edge inverted edges 19 on the two thin steel plates are overlapped and transitionally connected. The overlapping part of the two thin steel plates is arranged in the middle of the second thin steel plate 12. The adjustment components 3, the adjustment screw 30 and the adjustment handwheel 35 are symmetrically arranged with the overlapping part of the two thin steel plates as the center.

[0031] In this embodiment, each connecting beam 2 is made of flat steel. Each connecting beam 2 is in a U shape with both ends folded upwards. Both the first thin steel plate 11 and the second thin steel plate 12 are spring steel plates with a thickness of 3 mm and a width of 40 mm. The length of a single semi-automatic cutting machine track is 1.4 to 1.6 meters.

[0032] When the curvature needs to be adjusted, as long as an adjusting handwheel 35 is rotated, all the series-connected adjusting components 3 can be made to act synchronously together, achieving an equal adjustment of each group of adjusting components 3, changing the distance between two opposite sleeves 31 in two adjacent groups of adjusting components 3, driving the change of the connecting beam 2, and further causing the corresponding second thin steel plate 12 and the first thin steel plate 11 to change the degree of bending. This not only solves the problem of synchronous transmission of non-coaxial axes but also solves the problem of length compensation in the process of forward and reverse thread adjustment, ensuring the adjustment accuracy, saving the adjustment steps, and ultimately achieving the purpose of making the overall track curvature change basically consistent.

Claims

1. A semi-automatic cutting machine track with adjustable curvature, characterized in that, The described semi-automatic cutting machine track is composed of several tracks. Each of the tracks includes a radian adjustment mechanism, a first thin steel plate and a second thin steel plate which are arc-shaped and arranged in parallel. The first thin steel plate and the second thin steel plate are vertically arranged and connected by several connecting beams arranged at equal distances along their lengths. The bottom surfaces of the several connecting beams are flush with the bottom edges of the first thin steel plate and the second thin steel plate. The top edges of the first thin steel plate and the second thin steel plate are the traveling tracks for the wheels of the semi-automatic cutting trolley. The first thin steel plate is vertically and rigidly fixed to the several connecting beams. The second thin steel plate is vertically and rigidly fixed to the connecting beams at both ends of its length direction. The second thin steel plate is movably connected to the remaining connecting beams. The second thin steel plate is respectively provided with first oblong holes at the joints with the remaining connecting beams. First rivets are inserted into the first oblong holes. The second thin steel plate and the remaining connecting beams are connected by the first rivets. The second thin steel plate is formed by overlapping two thin steel plates. The two thin steel plates are respectively provided with second oblong holes at the overlapping part. Second rivets are inserted into the second oblong holes. The two thin steel plates are connected by the second rivets. The radian adjustment mechanism is used to adjust the mutual distance of one end of the several connecting beams connected to the second thin steel plate, so as to adjust the curvature of the first thin steel plate and the second thin steel plate.

2. The semi-automatic cutting machine track with adjustable curvature according to claim 1, characterized in that, The described radian adjustment mechanism includes a plurality of serially connected adjustment components. The plurality of serially connected adjustment components are arranged on the side of the several connecting beams close to the second thin steel plate. One set of the adjustment components is arranged on each connecting beam. Each set of the adjustment components includes a bracket, a universal joint and two sleeves. The bracket is fixed to one of the connecting beams. The bracket is a hollow square tube. The two sleeves are respectively installed on both sides of the length direction of the bracket in a manner that can swing horizontally. One end of each sleeve is processed with an internal threaded hole and the other end is processed with an inner hole. A notch is opened in the middle of the bracket. The universal joint is arranged in the notch. The two ends of the universal joint are respectively provided with internal hexagonal deep holes. The outer diameters of the two ends of the universal joint are adapted to the inner diameters of the inner holes. The two ends of the universal joint respectively extend into the two inner holes. An adjustment screw is connected between adjacent two sets of the adjustment components. Reverse threaded sections and forward threaded sections are respectively arranged on both sides of the adjustment screw. The internal threaded holes of adjacent two sets of the adjustment components face each other. The forward threaded section and the reverse threaded section are respectively threadedly connected to the internal threaded holes of adjacent two sets of the adjustment components. Hexagonal rod sections are respectively connected to the outer sides of the reverse threaded section and the forward threaded section. The outer diameters of the hexagonal rod sections are adapted to the inner diameters of the internal hexagonal deep holes. The hexagonal rod section on one side of the adjustment screw is fixed in the internal hexagonal deep hole of one set of the adjustment components by a screw. The hexagonal rod section on the other side of the adjustment screw is telescopically arranged in the internal hexagonal deep hole of the other set of the adjustment components.

3. A semi-automatic cutting machine track with adjustable curvature according to claim 2, characterized in that, On both sides of the bracket in the length direction, two pairs of through holes are symmetrically arranged. Each pair of the through holes is concentrically arranged up and down. On the outer wall of each sleeve, a pair of rotating shafts coaxial up and down is provided. The pair of rotating shafts is rotatably installed in a pair of the through holes.

4. A semi-automatic cutting machine track with adjustable curvature according to claim 2, characterized in that, At the top of the overlapping part of the two thin steel plates, outer edge inclined edges are respectively provided. The outer edge inclined edges on the two thin steel plates are overlapped and transitionally connected.

5. A semi-automatic cutting machine track with adjustable curvature according to claim 2, wherein One end of the universal joint is a long end with a longer length, and the other end is a short end with a shorter length. The short end of the universal joint is fixedly connected to the corresponding hexagonal rod section by screws, and the long end of the universal joint is movably connected to the corresponding hexagonal rod section.

6. A track of a semi-automatic cutting machine with adjustable curvature according to claim 2, characterized in that An adjusting handwheel for rotating the adjusting screw is installed on the adjusting screw.

7. A semi-automatic cutting machine track with adjustable curvature according to claim 6, characterized in that, The overlapping part of the two thin steel plates is arranged in the middle of the second thin steel plate. The adjusting assembly, the adjusting screw and the adjusting handwheel are symmetrically arranged with the overlapping part of the two thin steel plates as the center.

8. A semi-automatic cutting machine track with adjustable curvature according to claim 7, characterized in that, Splicing positioners are fixed on the connecting beams at both ends of the second thin steel plate in the length direction. The semi-automatic cutting machine track is spliced by multiple tracks.

9. A semi-automatic cutting machine track with adjustable curvature according to claim 1, characterized in that, Each of the connecting beams is made of flat steel. Each of the connecting beams is a U-shaped with both ends folded up. The first thin steel plate and the second thin steel plate are both spring steel plates. The length of a single semi-automatic cutting machine track is 1.4 to 1.6 meters.

10. A semi-automatic cutting machine track with adjustable curvature according to claim 1, characterized in that, A curvature reference scale is provided on the outer surface of the second thin steel plate.

Images