H-shaped steel fish belly cutting device

Abstract

This invention discloses an H-beam fish-belly cutting device, comprising a left positioning component, a right positioning component, a telescopic connecting component, and two mounting positions. The left and right positioning components are spaced apart along the distribution direction of the two flanges of the H-beam. The two ends of the telescopic connecting component are connected to the left and right positioning components and used to adjust the spacing. Both the left and right positioning components include a first traveling wheel and a second traveling wheel for contacting the two vertical sides of the H-beam. At least one of the first and second traveling wheels is used to contact the outer side of the flange of the H-beam. The two mounting positions are spaced apart by two of the left, right, and telescopic connecting components within the H-beam fish-belly cutting device. Along the cutting direction, both mounting positions are located behind the traveling contact point of the first and / or second traveling wheels, effectively controlling the fish-belly cutting dimensions L1 and L2, and effectively ensuring the perpendicularity and flatness of the cut surface.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fish belly beam manufacturing, in particular to a fish belly cutting device for H-shaped steel. BACKGROUND

[0002] The fish belly beam is widely used and is a key component of the middle beam and side beam of a railway freight wagon flat car. The raw material thereof is a large hot-rolled H-shaped steel. A typical fish belly beam is shown in Fig. 1. The fish belly cutting of the fish belly beam before pressing and welding is shown in Fig. 2. The structure of the H-shaped steel after fish belly cutting is shown in Fig. 3. Figure 1 Figure 2 According to the national standard, the commonly used hot-rolled 630 and 600 specifications of H-shaped steel have a height B tolerance of 630±4 (unit: mm, the same below) and 600±4. The fish belly beam pressing L size generally requires a tolerance of L±2.

[0003] In the prior art, the commonly used fish belly cutting methods include a manual cutting method, a trolley guide rail cutting method, a general numerical control equipment cutting method and a special numerical control equipment cutting method. The manual cutting method needs manual control of a gun head, has poor cutting section quality and stability, affects the subsequent welding quality and size, and has low efficiency and high labor intensity. The trolley guide rail cutting method has a guide rail on the H-shaped steel web surface, a trolley automatically travels along the guide rail, two cutting gun heads on the trolley are fixed to cut parallel lines, a separate guide rail is arranged, and the trolley opens a gun head to cut an inclined line. When cutting the parallel lines, the guide rail is offset due to the existence of the H-shaped steel height B tolerance and the H-shaped steel thermal bending deformation in the cutting process, resulting in size deviation. In order to prevent the cutting position from being offset due to the H-shaped steel thermal bending deformation, the general numerical control equipment cutting method needs to increase a large positioning clamping tool on the original equipment workbench for fixation, and needs to prepare multiple cutting programs of different sizes. The size of the raw material is measured before cutting, and the appropriate cutting program is selected for completion. The general numerical control equipment cutting method has the technical problems of complicated clamping, occupation of the overhead crane, secondary cutting of the process rib, low overall efficiency, occupation of the numerical control equipment capacity and site, and influence on the process layout. The cutting special numerical control equipment cutting method leaves a process rib at the fish belly end head to prevent the H-shaped steel from being affected by thermal deformation in the cutting process and to ensure the cutting quality and equipment movement. However, the cutting special numerical control equipment cutting method has the technical problems of large site occupation, heavy weight, need for a larger processing site, inconvenience in moving when changing the processing object, need for secondary cutting of the process rib, high requirement for the operator in programming operation, and need for more time in operation and maintenance, which affects the processing efficiency and increases the equipment cost.

[0004] In summary, the cutting equipment and the cutting method in the prior art have the technical problems of complexity, difficulty in operation, poor positioning accuracy and the like. SUMMARY

[0005] ​To solve the above technical problems, the application provides an H-shaped steel fish belly cutting device which adopts the side surface self-adaptive positioning of two wing plates of the H-shaped steel, effectively controls the fish belly cutting L1 and L2 sizes, and effectively guarantees the perpendicularity and flatness of the cutting section, so that the cutting position does not need to be manually adjusted, the artificial operation difference is reduced, and the cutting size is stable and reliable.

[0006] The scheme for achieving the technical purpose of the application is an H-shaped steel fish belly cutting device, which comprises,

[0007] A left positioning assembly and a right positioning assembly are distributed along the distribution direction of the two wing plates of the H-shaped steel, and each comprises two vertical first walking wheels and second walking wheels for contacting the side surfaces of the H-shaped steel, and at least one of the first walking wheels and the second walking wheels is used for contacting the outer side surface of the wing plate of the H-shaped steel.

[0008] A telescopic connecting assembly is connected to the left positioning assembly and the right positioning assembly at both ends and is used for adjusting the distance between the left positioning assembly and the right positioning assembly.

[0009] Two mounting positions for mounting cutting members are arranged on the left positioning assembly and the right positioning assembly, or are arranged at intervals on the telescopic connecting assembly, or one is arranged on the telescopic connecting assembly and the other is arranged on the left positioning assembly / right positioning assembly.

[0010] In the cutting direction, the two mounting positions are located behind the walking contact points of the first walking wheels and / or the second walking wheels.

[0011] In some embodiments, the telescopic connecting assembly comprises,

[0012] A left support is connected to the left positioning assembly.

[0013] A right support is connected to the right positioning assembly and is arranged at intervals with the left support.

[0014] A central shaft is connected to the left support and the right support at both ends.

[0015] At least one of the left support, the right support and the central shaft is a telescopic structure, or at least one of the left support and the right support is in sliding fit with the central shaft.

[0016] In some embodiments, the right support is in sliding fit with the central shaft, the telescopic connecting assembly further comprises a locking member connected to the right part of the central shaft, and the right support is located between the locking member and the left support.

[0017] In some embodiments, the telescopic connecting assembly further comprises an elastic member sleeved on the central shaft, the elastic member is located between the right support and the locking member, and the elastic member is in a compressed state when cutting the H-shaped steel.

[0018] In some embodiments, the central shaft comprises a threaded segment; the telescopic connecting assembly further comprises a stopper threadedly connected with the threaded segment, and the stopper is located between the right support and the left support.

[0019] In some embodiments, the telescopic connecting assembly further comprises an adjusting pad sleeved on the central shaft, and the adjusting pad is located between the stopper and the right support or between the right support and the locking member.

[0020] In some embodiments, the H-shaped steel fish belly cutting device further comprises a power member for driving the left positioning assembly and the right positioning assembly to move along the cutting direction.

[0021] The power member is connected with at least one of the left support, the right support and the central shaft; or the power member is connected with the left positioning assembly and / or the right positioning assembly.

[0022] In some embodiments, the wheel shaft of the first walking wheel is parallel to the distribution direction, and the wheel shaft of the first walking wheel and the wheel shaft of the second walking wheel are perpendicular, so that the first walking wheel is in contact with the web plate or with the outer side of the wing plate parallel to the distribution direction, and the second walking wheel is in contact with the outer side of the wing plate perpendicular to the distribution direction.

[0023] In some embodiments, the left positioning assembly and the right positioning assembly are symmetrically distributed along the distribution direction; and the left positioning assembly and the right positioning assembly are both connected with the telescopic connecting assembly through the wheel shaft of the first walking wheel.

[0024] In some embodiments, the wheel shaft of the first walking wheel is a stepped shaft, and the stepped shaft is sleeved on the telescopic connecting assembly; and the telescopic connecting assembly is located on the stepped shaft and is spaced apart from the first walking wheel along the axial direction of the stepped shaft.

[0025] In some embodiments, the left positioning assembly and the right positioning assembly each further comprise a connecting block, and the wheel shaft of the first walking wheel and the wheel shaft of the second walking wheel are fixedly connected through the connecting block.

[0026] In some embodiments, the number of the left positioning assembly and the right positioning assembly is two, and two left positioning assemblies are spaced apart along the cutting direction, and two right positioning assemblies are spaced apart along the cutting direction.

[0027] In some embodiments, the H-shaped steel fish belly cutting device further comprises two gun head fixing assemblies, each of which comprises a connecting plate, a threaded fastener and a sleeve provided on the connecting plate; the connecting plate is detachably connected to the telescopic connecting assembly; the central hole of the sleeve constitutes the mounting position, the sleeve wall is provided with a threaded hole communicating with the central hole, and the threaded fastener is arranged in the threaded hole to fix the cutting member in the sleeve.

[0028] As can be seen from the above technical solutions, the H-shaped steel fish belly cutting device provided by the application comprises a left positioning assembly, a right positioning assembly, a telescopic connecting assembly and two mounting positions for mounting cutting members, wherein the left positioning assembly and the right positioning assembly are spaced apart along the distribution direction of the two flanges of the H-shaped steel, the two ends of the telescopic connecting assembly are connected to the left positioning assembly and the right positioning assembly respectively, and the telescopic connecting assembly is used to adjust the distance between the left positioning assembly and the right positioning assembly to match the overall height B of H-shaped steels of different specifications and the small fluctuation of the size of the overall height B in the direction of the H-shaped steels caused by the machining tolerance. The left positioning assembly and the right positioning assembly each comprise first and second walking wheels for contacting the vertical two sides of the H-shaped steel to ride on the H-shaped steel and be positioned by the distance between the two oppositely arranged flanges. At least one of the first and second walking wheels is used to contact the outer side of the flange of the H-shaped steel, which on the one hand enables the entire device to move in the cutting direction of the H-shaped steel, and on the other hand ensures the perpendicularity and flatness of the cutting section through the perpendicularity of different sides of the H-shaped steel, so that the cutting section is continuous, smooth and of stable quality, and the gap quality and welding quality of the subsequent fish belly weld are improved. The two mounting positions for mounting the cutting members are spaced apart in the H-shaped steel fish belly cutting device through the left positioning assembly, the right positioning assembly and the telescopic connecting assembly to correspond to the positions of the two parallel cutting lines in the fish belly beam cutting process. Since the thermal bending deformation of the H-shaped steel mainly occurs in the part that has been cut during the cutting process, in the present scheme, along the cutting direction, both of the mounting positions are located behind the walking contact points of the first and / or second walking wheels, that is, after the cutting members are mounted, the part that realizes positioning and movement along the surface of the H-shaped steel is in a state that has not walked before cutting, which can normally satisfy walking, and the H-shaped steel at the position where the walking contact points are positioned corresponds to the web plate of the flange, which will not deform obviously because it has not been cut or is at a certain distance from the cutting member, so that the thermal deformation generated in the cutting operation will not affect the positioning size between the left positioning assembly and the right positioning assembly.

[0029] In summary, the H-shaped steel fish belly cutting device provided by the application can realize self-adaptive positioning through the left positioning assembly, the right positioning assembly and the telescopic connecting assembly, automatically eliminate the influence of the height B size tolerance change of the H-shaped steel on the cutting size, effectively control the fish belly cutting L1 and L2 sizes, effectively guarantee the perpendicularity and flatness of the cutting section, do not need to manually adjust the cutting position, reduce the human operation difference, and the cutting size is stable and reliable, thereby improving the precision of the fish belly pressing size L, guaranteeing the subsequent steel structure overall assembly quality and efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic view of a fish belly beam obtained by processing an H-shaped steel in the prior art;

[0031] Figure 2 is a structural schematic view of an H-shaped steel after fish belly cutting in the prior art;

[0032] Figure 3 is a front view of the H-shaped steel fish belly cutting device provided by embodiment 1 of the application arranged on an H-shaped steel;

[0033] Figure 4 is a top view of the H-shaped steel fish belly cutting device and the H-shaped steel of Figure 3

[0034] Figure 5 is another state view of the H-shaped steel fish belly cutting device in Figure 4

[0035] BRIEF DESCRIPTION OF DRAWINGS: 100-H-shaped steel fish belly cutting device; 111, 111'-left positioning assembly, 112, 112'-right positioning assembly, 113-first walking wheel, 114-second walking wheel, 115-connection block, 116-wheel shaft, 117-rolling bearing, 118-wheel body; 120-telescopic connecting assembly, 121-left support, 122-right support, 123-center shaft, 124-locking piece, 125-elastic piece, 126-stop block, 127-adjusting pad, 128-gasket, 129-fastening collar, 130-mounting position; 140-gun head fixing assembly, 141-connection plate, 142-threaded fastener, 143-sleeve;

[0036] 200-H-shaped steel, 210-web, 220-flange, 221-inner side surface, 222-outer side surface;

[0037] 300-cutting piece;

[0038] A-distribution direction, B-total height, D-cutting direction. DETAILED DESCRIPTION

[0039] ​​In order to solve the problems of the H-shaped steel in the fish belly cutting forming process, such as not easy to operate, cutting precision and cutting size not easy to control, the application provides a H-shaped steel fish belly cutting device, which adopts the side self-adaptive positioning of the two wing plates of the H-shaped steel, has simple structure, is convenient to use the existing conditions of the factory, and realizes reliable, efficient, convenient and flexible fish belly cutting operation. The application scheme is described in detail through a specific embodiment.

[0040] Embodiment

[0041] As Figures 3-5 The H-shaped steel fish belly cutting device 100 provided by the application includes a left positioning assembly 111, a right positioning assembly 112, a telescopic connecting assembly 120 and two mounting positions 130 for mounting cutting members 300, wherein the left positioning assembly 111 and the right positioning assembly 112 are spaced apart along the distribution direction A of the two wing plates 220 of the H-shaped steel 200, the two ends of the telescopic connecting assembly 120 are connected to the left positioning assembly 111 and the right positioning assembly 112 respectively, and the telescopic connecting assembly 120 is used for adjusting the distance between the left positioning assembly 111 and the right positioning assembly 112, so as to match the total height B of the H-shaped steel 200 of different specifications and the small fluctuation of the total height B of the H-shaped steel 200 in the direction caused by the machining tolerance. The left positioning assembly 111 and the right positioning assembly 112 each include a first walking wheel 113 and a second walking wheel 114 for contacting the vertical two sides of the H-shaped steel 200, so as to ride the device on the H-shaped steel 200 and position it through the distance between the two facing wing plates 220. At least one of the first walking wheel 113 and the second walking wheel 114 is used for contacting the outer side surface 222 of the wing plate 220 of the H-shaped steel 200, which on the one hand realizes the movement of the whole device in the cutting direction D of the H-shaped steel 200, and on the other hand guarantees the perpendicularity and flatness of the cutting section through the perpendicularity of different side surfaces of the H-shaped steel 200 itself, so that the cutting section is continuous and smooth, the quality is stable, the gap quality and welding quality of the subsequent fish belly weld are improved.

[0042] The two mounting positions 130 for mounting the cutting members 300 are respectively arranged on the left positioning assembly 111 and the right positioning assembly 112, or are spaced apart on the telescopic connecting assembly 120, or one is arranged on the telescopic connecting assembly 120 and the other is arranged on the left positioning assembly 111 / right positioning assembly 112, that is to say, the two mounting positions 130 are spaced apart on the H-shaped steel fish belly cutting device 100 through two of the left positioning assembly 111, the right positioning assembly 112 and the telescopic connecting assembly 120, so as to correspond to the positions of the two parallel cutting lines in the fish belly beam cutting process respectively.

[0043] Since the thermal bending deformation of the H-shaped steel 200 mainly occurs in the part that has been cut during the cutting process, in the present scheme, along the cutting direction D, both the mounting positions 130 are located behind the walking contact points of the first walking wheel 113 and / or the second walking wheel 114, that is, after the cutting member 300 is installed, the part that realizes positioning and movement along the surface of the H-shaped steel 200 presents a state of not walking before cutting, on the basis of normal walking, the H-shaped steel 200 at the position of the walking contact point positioning generated will not be obviously deformed because the web plate 210 corresponding to the flange plate 220 at the position is not cut even a certain distance from the cutting member 300, so the thermal deformation generated in the cutting operation will not affect the positioning size between the left positioning assembly 111 and the right positioning assembly 112, ensuring the normal use and position fixing of the cutting member 300, and further ensuring the cutting size.

[0044] By reasonably designing the position of the mounting position 130, it is ensured that the part at the positioning position will not be affected by the cutting thermal deformation, and the mounting position 130 will not be too far away from the adjacent first walking wheel 113 or second walking wheel 114, so as to ensure the size of the walking contact point positioning and the accuracy.

[0045] It should be noted that the outer side surface 222 of the flange plate 220 mentioned above refers to the side surface of the H-shaped steel (H-shaped steel 200) as a whole, among the side surfaces of the H-shaped steel 200 facing the external structure, in addition to the opposite side surfaces of the two flange plates 220 close to the web plate 210 being the inner side surfaces 221, along the cutting direction D, the two side surfaces of the web plate 210 along and extending in the cutting direction D and the other side surfaces of the flange plate 220 are all outer side surfaces 222.

[0046] The structure of the telescopic connecting assembly 120 is not limited in the present embodiment, the telescopic connecting assembly 120 can include a telescopic rod and fastening bolts, the telescopic rod and the left positioning assembly 111 and the right positioning assembly 112 are respectively positioned by two fastening bolts screwed on the telescopic rod, the telescopic rod can also adjust the length of the H-shaped steel web cutting device 100 in the B direction, thereby realizing the cutting requirement of different sizes of H-shaped steel. At the same time, elastic members 125 acting on the fastening bolts and the left positioning assembly 111 / right positioning assembly 112 at both ends can be provided, so that the distance between the two walking wheels used for B direction positioning of the left positioning assembly 111 and the right positioning assembly 112 can be self-adaptively adjusted through the action of the elastic members 125 when the tolerance size of the H-shaped steel changes, so that the walking wheels always take the two side surfaces of the two oppositely arranged flange plates 220 perpendicular to the B direction as the positioning reference.

[0047] As an implementation, in order to facilitate assembly and disassembly and maintenance and replacement of parts, the telescopic connecting assembly 120 is a split structure, including a left support 121 connected to the left positioning assembly 111, a right support 122 connected to the right positioning assembly 112, and a center shaft 123 connected to the left support 121 and the right support 122 at both ends, and the right support 122 is arranged in a spaced manner with the left support 121. In order to realize the adjustment of the distance, at least one of the left support 121, the right support 122, and the center shaft 123 is a telescopic structure; or, at least one of the left support 121 and the right support 122 is in sliding fit with the center shaft 123. At this time, the total height B of the I-beam that can be used can be adjusted in a large range through the telescopic structure or sliding, so as to be used for cutting of I-beams of different specifications and sizes. As long as the installation position 130 is determined, since the left positioning assembly 111 and the right positioning assembly 112 take the side surfaces of the two flanges 220 as the positioning reference, and are not affected by the cutting heat deformation, the cutting position is fixed and unchanged, and the dimensional accuracy of L1 and L2 during cutting is ensured.

[0048] Due to the existence of machining tolerance, even the same specification and size H-shaped steel 200 can have a slight size deviation in the B direction. In order to automatically adapt to the size change caused by the height B tolerance of the H-shaped steel 200 raw material, avoid the need to calibrate and adjust the position every time the H-shaped steel fish belly cutting device 100 is positioned on the H-shaped steel 200, and realize the universality of the H-shaped steel fish belly cutting device 100 on the same specification H-shaped steel 200, the first walking wheel 113 and the second walking wheel 114 are in contact with the corresponding side surface of the corresponding H-shaped steel 200 after being in contact, and the telescopic connecting assembly 120 also has a self-adjusting telescopic part. Only the size of the first H-shaped steel 200 of the same specification and batch needs to be adjusted during use, and the size change within the tolerance range of the subsequent H-shaped steel 200 can be automatically elongated or further compressed by the self-adjusting telescopic part to achieve tension balance, thereby realizing automatic matching.

[0049] In some embodiments, when the left support 121 and the right support 122 are in sliding fit with the center shaft 123, fastening bolts and elastic members 125 need to be arranged on the center shaft 123 on both sides of the left support 121 / right support 122, i.e., elastic return structures are arranged on both sides to automatically realize force balance, so that the whole device is always in a tension state when placed on the I-beam, and is positioned and tensioned by the side surfaces of the two flanges 220 perpendicular to the web 210, thereby realizing positioning by the flanges 220 as the reference, automatically adapting to small range size changes of different positions or different I-beams caused by tolerances during use, automatically adapting to the size change caused by the tolerance of the total height B of the H-shaped steel 200 raw material during the cutting process, and avoiding the influence of heat deformation during the machining process. The cutting quality is stable and reliable, the production efficiency is high, the labor intensity is low, the cost is low, and the operation and maintenance are simple.

[0050] In order to ensure the overall structural strength and simplify the connection structure, as an embodiment, the right support 122 is in sliding fit with the center shaft 123; the telescopic connection assembly 120 further comprises a locking piece 124 connected to the right part of the center shaft 123, and the right support 122 is located between the locking piece 124 and the left support 121, so as to prevent the right-left support / right support from being detached from the right end of the center shaft 123 in the non-working state.

[0051] As an embodiment, the center shaft 123 comprises a threaded segment; the telescopic connection assembly 120 further comprises a stopper 126 in threaded connection with the threaded segment, and the stopper 126 is located between the right support 122 and the left support 121, so as to separate the left support 121 and the right support 122 and limit the right support 122.

[0052] As an embodiment, the telescopic connection assembly 120 further comprises an elastic piece 125 sleeved on the center shaft 123, and the elastic piece 125 is located between the right support 122 and the locking piece 124, so as to be in compression state when the H-shaped steel 200 is cut. The elastic piece 125 serves as a self-adjusting telescopic part for self-adaptive adjustment of the total length of the telescopic connection assembly 120, and further adjusts the distance between the left positioning assembly 111 and the right positioning assembly 112, so that the left positioning assembly 111 and the right positioning assembly 112 are tensioned on the wing plate 220. In combination with the elastic piece 125 and the locking piece 124, the position of the stopper 126 is adjusted, and the elastic piece 125 is stopped at a certain position, so that the spring has a pre-compression amount, and the device is kept in tension without loosening. That is, the stopper 126 can provide pre-tightening of the elastic piece 125, so that the H-shaped steel web cutting device 100 in the non-working state can also be in a certain tension state, and can also prepare for subsequent assembly of the H-shaped steel web cutting device 100 to the H-shaped steel 200, thereby simplifying the subsequent operation. In the non-working state, the right-left support / right support is respectively applied to the stopper 126 and the elastic piece 125, and after being assembled to the H-shaped steel 200, the right-left support / right support further compresses the elastic piece 125, and a gap a is generated on the side of the right support 122 close to the stopper 126, and the value of the gap a is related to the initial position.

[0053] In order to expand the applicable size range of the H-shaped steel web cutting device 100, in some embodiments, the telescopic connection assembly 120 further comprises an adjusting pad 127 sleeved on the center shaft 123, and the adjusting pad 127 is arranged between the stopper 126 and the right support 122 or between the right support 122 and the locking piece 124, so as to adjust the device width B by adjusting the position and thickness of the adjusting pad 127. In order to facilitate the adjustment of the position or replacement of the adjusting pad 127 with different thicknesses, in this embodiment, the adjusting pad 127 is in clearance fit with the center shaft 123 and can freely move on the shaft.

[0054] The number of the left positioning assembly and the right positioning assembly is not specifically limited in the embodiment, and any structure that can achieve the above technical effects can be adopted. For example, in some embodiments, there is only one left positioning assembly and one right positioning assembly, and at this time, in order to ensure positioning and smooth walking on the H-shaped steel, the two mounting positions must be located at the rear of all the first walking wheels and the second walking wheels. In some embodiments, there are two left positioning assemblies and one right positioning assembly, and along the cutting direction, the left positioning assembly 111' located at the rear, and in order to ensure the size positioning in the B direction, the left positioning assembly 1 and the right positioning assembly located in front, if the second walking wheel in the left positioning assembly 111' at the rear is used for size positioning in the B direction, at this time, in order to ensure that the second walking wheel can smoothly and smoothly move along the I-shaped steel under the traction of the front position, at least the second walking wheel of the left positioning assembly 111' also needs to be in contact with the inner side or the outer side of the wing plate in the initial state, and the two mounting positions need to be located at the rear of the second walking wheel of the left positioning assembly 111', at this time, the mounting positions can be located at the rear or the front of the first walking wheel of the left positioning assembly 111'. When the mounting positions are located at the front of the first walking wheel of the left positioning assembly 111', the first walking wheel of the left positioning assembly 111' is guided by other walking wheels to move along the I-shaped steel after the web is cut by the cutting member, and the first walking wheel of the left positioning assembly 111' is in contact with the inner side or the outer side of the wing plate, and the first walking wheel of the left positioning assembly 111' is in contact with the inner side or the outer side of the wing plate.

[0055] It should be noted that whether it is located at the rear is compared with the walking contact point of the corresponding first walking wheel / second walking wheel and the I-shaped steel.

[0056] Since the I-shaped steel that has been cut will have a certain thermal deformation, at this time, if the first walking wheel of the left positioning assembly 111' located at the rear of the mounting position is positioned through the outer side of the wing plate, there may be a problem of falling off due to deformation, in order to ensure smooth cutting, preferably, at this time, the first walking wheel of the left positioning assembly 111' is in contact with the web, and there is a reasonable interval distance with the wing plate, or preferably, the two mounting positions are located at the rear of all the first walking wheels and / or the walking contact points of the second walking wheels.

[0057] Since the middle part of the web 210 is not supported, in order to minimize the vibration and deformation of the web 210 during cutting and ensure the size accuracy after cutting, preferably, the first walking wheel 113 and the second walking wheel 114 are in contact with different sides of the wing plate 220, respectively.

[0058] In order to ensure the stable contact between the first walking wheel 113 and the second walking wheel 114 and the two outer sides 222 of the wing plate 220, and further ensure the stable movement, in some embodiments, the wheel shaft 116 of the first walking wheel 113 is parallel to the distribution direction A, and the wheel shaft 116 of the first walking wheel 113 and the wheel shaft 116 of the second walking wheel 114 are perpendicular, so that the first walking wheel 113 is in contact with the web plate 210 or the outer side 222 of the wing plate 220 parallel to the distribution direction A, and the second walking wheel 114 is in contact with the outer side 222 of the wing plate 220 perpendicular to the distribution direction A.

[0059] In order to ensure the positioning accuracy and smooth operation, further, the left positioning assembly 111 and the right positioning assembly 112 are symmetrically distributed along the distribution direction A; the left positioning assembly 111 and the right positioning assembly 112 are connected to the telescopic connecting assembly 120 through the wheel shaft 116 of the first walking wheel 113. As an embodiment, the wheel shaft 116 of the first walking wheel 113 of the left positioning assembly 111 is connected to the left support 121 and is axially positioned; the wheel shaft 116 of the first walking wheel 113 of the right positioning assembly 112 is connected to the right support 122 and is axially positioned.

[0060] In some embodiments, the wheel shaft 116 of the first walking wheel 113 is a stepped shaft, the stepped shaft is arranged in the telescopic connecting assembly 120; along the axial direction of the stepped shaft, the telescopic connecting assembly 120 is positioned on the stepped shaft and is arranged separately from the first walking wheel 113.

[0061] In order to further expand the range of the total height B of the H-shaped steel 200 applicable to the H-shaped steel fish belly cutting device 100, in this embodiment, the wheel shaft 116 of the first walking wheel 113 of the right positioning assembly 112 is a three-section stepped shaft, as shown in Figure 5 The device can be applied to more specifications of H-shaped steel 200 fish belly cutting by removing the gasket 128 and adding the fastening collar 129.

[0062] The driving mode and connection relationship of the first walking wheel 113 and the second walking wheel 114 are not limited in this scheme, in some embodiments, the first walking wheel 113 and the second walking wheel 114 can be driven separately. In some embodiments, the first walking wheel 113 and the second walking wheel 114 can be driven through a gear transmission, and in some embodiments, the wheel shaft 116 of the first walking wheel 113 and the wheel shaft 116 of the second walking wheel 114 can be fixed together to form an integrated follow-up structure.

[0063] In the embodiment, the left positioning assembly 111 and the right positioning assembly 112 each further comprises a connecting block 115, and the wheel shaft 116 of the first walking wheel 113 and the wheel shaft 116 of the second walking wheel 114 are fixedly connected through the connecting block 115. In the embodiment, the first walking wheel 113 and the second walking wheel 114 each comprises a wheel shaft 116, a rolling bearing 117 and a wheel body 118, and the wheel shaft 116 is connected to the wheel body 118 through the rolling bearing 117, so that the wheel shaft 116 does not rotate and is moved by external power traction.

[0064] In order to traction the whole H-shaped steel fish belly cutting device 100 to translate on the H-shaped steel 200 under the rotation of the wheel body 118, in the embodiment, the H-shaped steel fish belly cutting device 100 further comprises a power member for driving the left positioning assembly 111 and the right positioning assembly 112 to move along the cutting direction D; the power member is connected with at least one of the left support 121, the right support 122 and the center shaft 123; or the power member is connected with the left positioning assembly 111 and / or the right positioning assembly 112.

[0065] In order to ensure stable movement and keep the overall balance of the device, preferably, the number of the left positioning assembly 111 and the right positioning assembly 112 is two, the left positioning assembly 111 and the left positioning assembly 111' are distributed at intervals along the cutting direction D, and the right positioning assembly 112 and the right positioning assembly 112' are distributed at intervals along the cutting direction D.

[0066] In order to ensure the positioning accuracy of B, in the embodiment, the second walking wheel 114 has two wheel bodies 118 which are completely the same, so as to ensure the accurate positioning of the second walking wheel 114.

[0067] In order to adapt to different specifications and sizes B of the I-shaped steel, the positions of the two mounting positions 130 from the two end surfaces of the two flanges 220 can also be adjusted, in the embodiment, the H-shaped steel fish belly cutting device 100 further comprises two gun head fixing assemblies 140, the gun head fixing assembly 140 comprises a connecting plate 141, a threaded fastener 142 and a sleeve 143 provided on the connecting plate 141; the connecting plate 141 is detachably connected to the telescopic connecting assembly 120; the center hole of the sleeve 143 constitutes the mounting position 130, the sleeve 143 is provided with a threaded hole communicated with the center hole, and the threaded fastener 142 is arranged in the threaded hole, for fixing the cutting member 300 in the sleeve 143.

[0068] The gun head fixing assembly 140 is used to fix the cutting gun head. The relative position and size of the sleeve 143 and the support can be changed as needed. The connecting plate 141 is detachably connected with the left support 121 and the right support 122 through bolts, which is convenient for disassembly, replacement and position adjustment. Therefore, the relative position of the sleeve 143 on the support can be adjusted according to different L1 and L2 cutting distances, and different L1 and L2 cutting distances can be realized by preparing different “gun head fixing assemblies 140”. The sleeve 143 changes according to the size of the gun head. The installation, fixation and height adjustment of the gun head are realized through screws.

[0069] Overall, in the device, the left positioning assembly 111, the left support 121, the left gun head fixing assembly 140 and the central shaft 123 are fixed as a whole, which is a left guide assembly and is positioned by the outer side surface 222 and the top surface of the wing of the H-shaped steel 200, thereby ensuring the cutting L1 size. The right support 122, the right gun head fixing assembly 140 and the right positioning assembly 112 are fixed as a whole, which is a right guide assembly and ensures the cutting L2 size. The right guide assembly of the device can slide on the central shaft 123 of the left guide assembly in the B direction through the sliding sleeve fixed on the right support 122. Through the action of the elastic member 125 and the locking member, the device realizes self-adaptive positioning in the B direction distance, thereby solving the problem of L1 and L2 positioning difficulty caused by the change of the raw material height B size tolerance of the H-shaped steel 200 and the cutting thermal deformation.

[0070] The gap “a” of the device changes with the fluctuation of the raw material height B size tolerance of the H-shaped steel 200, and the compression amount of the spring also changes accordingly. Here, the problem of size change of the raw material height B of the same specification (height B) due to tolerance is solved. The thickness of the adjusting pad 127 of the device is d”. By replacing the pad to the right side of the right support 122, the compression adjustment amount of the elastic member 125 remains unchanged, and the processing distance of the device becomes B-d. Here, the problem of fish belly cutting of similar specifications of H-shaped steel 200 (such as 630 specification H-shaped steel 200 and 600 specification H-shaped steel 200) is solved. The step distance “c” of the axle 116 of the first walking wheel 113 in the right positioning assembly 112 of the device. After removing the pad, the stepped shaft can pass through the vertical plate hole of the right-left support / right support, and is fixed by increasing the fastening sleeve 129. The compression adjustment amount of the elastic member 125 remains unchanged, and the processing distance of the device becomes B-c. The schematic diagram is shown in Figure 5 Here, the problem of fish belly cutting of different specifications of H-shaped steel 200 is solved. The device can adapt to the fish belly cutting of different specifications of H-shaped steel 200 within a certain range through the adjustment of a, b and c.

[0071] The "gun head fixing assembly 140" and the "left support 121 / right support 122" are fastened by bolts, convenient to disassemble and assemble, so that the relative position of the sleeve 143 on the support can be adjusted according to different products and different L1, L2 cutting distances, and different "gun head fixing assemblies 140" are prepared to realize fish belly cutting with different L1, L2 cutting distances. The "gun head fixing assembly" and the "left support / right support" are connected by bolts, which are convenient to replace and adjust. The left support / right support has a waist round hole, which is convenient to accurately adjust the position of the "gun head fixing assembly" to realize the required L1, L2 size.

[0072] The use method of the H-shaped steel fish belly cutting device provided in the application is as follows:

[0073] Step 1: According to the fish belly cutting size (height B size, B tolerance range, cutting position L1, L2 size, etc.) of the specific H-shaped steel workpiece, the device is installed and adjusted to the right position, the rotation stop block is rotated to the appropriate position, the device has a certain tension, and the position of the gun head fixing assembly and the second walking wheel is adjusted through the waist round hole on the side of the left support and the right support to ensure that the cutting gun head position L1, L2 is accurate. In addition, an ordinary power trolley is prepared as a power member to provide traction power, and two portable cutting members are prepared, for example, a hand-held plasma. Two sets of this H-shaped steel fish belly cutting device are prepared to cut from both ends of the H-shaped steel, and generally two people are arranged at one end.

[0074] Step 2: Prepare a pad iron on the ground of the production site, and place multiple pieces of H-shaped steel raw materials on the pad iron by the overhead crane, and the placement direction is that the web surface of the H-shaped steel is parallel to the ground, and the placement distance should be convenient for the movement of the device.

[0075] Step 3: Draw a line on the cutting key node position by using a template, which is convenient to exclude the abnormality of the device, operation or raw material when there is deviation in the cutting position.

[0076] Step 4: Place the ordinary power trolley on the web surface of the H-shaped steel, and the position is in front of the device. Ride the device on the H-shaped steel from the end surface of the H-shaped steel, confirm that the top surface and the side surface are in good contact, the device rolls smoothly forward and backward, and a simple rigid strip is used to connect the ordinary power trolley and the device. One person inserts the hand-held plasma cutting gun head into the "gun head fixing assembly" and adjusts and fixes it, starts the traction trolley, starts the front and rear cutting gun heads respectively, cuts from the end of the H-shaped steel, completes the parallel line cutting, cuts to the inclined line segment, closes one of the gun heads, and the other gun head continues to complete the remaining straight line segment cutting. One end of one piece of H-shaped steel is cut at the parallel line, and two people cooperate to move the device to the end of the next piece of H-shaped steel to start a new cutting.

[0077] Step 5: while cutting at parallel lines, another person uses a hand plasma to cut the inclined line segment of the last H-shaped steel (parallel line position has been cut) by using a die, or uses other small car guide rail cutting mode to complete the inclined line segment cutting, this step does not use the device.

[0078] Step 6: two people cooperate with each other to complete the fish belly cutting (parallel line segment and inclined line segment) of one end of the H-shaped steel in turn.

[0079] Step 7: a batch of cut H-shaped steels on the ground are concentrated and lifted to the storage position of the next process by the overhead crane. The raw materials are laid in the processing field, and a new round of cutting processing is started.

[0080] In summary, the present application has at least the following beneficial effects:

[0081] The left positioning assembly and the right positioning assembly are both composed of a first walking wheel, a second walking wheel and a connecting block, so that the device is inverted on the horizontal plane to realize the positioning and rolling of the top surface and the side surface of the flange plate of the H-shaped steel. One gun head fixing assembly and the right guide assembly form a fixed structure to realize reliable and accurate positioning of the L1 cutting position; the other gun head fixing assembly and the right guide assembly form a fixed structure to realize reliable and accurate positioning of the L2 cutting position. The left guide assembly and the right guide assembly are connected in a structure of elastic telescopic and slidable through a center shaft, an elastic member, a locking member and a sliding sleeve to realize self-adaptive positioning of the H-shaped steel in the height B direction.

[0082] The device uses two wing edge outer side self-adaptive positioning to automatically eliminate the influence of the size tolerance change of the H-shaped steel height B on the cutting size. In addition, the heat bending deformation of the H-shaped steel mainly occurs in the cut part during the cutting process, and the device walks in front of the cutting gun head, so the H-shaped steel wing edge at the positioning position of the device will not deform obviously, and therefore the cutting heat deformation will not affect the size cutting of the device. In summary, the device effectively controls the fish belly cutting L1 and L2 sizes, does not need to manually adjust the cutting position, reduces the human operation difference, and stabilizes the cutting size, thereby improving the precision of the fish belly pressing size L, ensuring the overall assembly quality and efficiency of the subsequent steel structure.

[0083] The H-shaped steel fish belly cutting device is automatically walked and cut by the trolley with the gun head, the perpendicularity of the cutting gun head and the web plate of the H-shaped steel is ensured by the device, the perpendicularity and flatness of the cutting section are ensured, the cutting section is continuous and smooth, the quality is stable, and the gap quality and welding quality of the subsequent fish belly weld are improved.

[0084] The H-shaped steel fish belly cutting device uses double gun cutting for the parallel line segment, the cutting speed is relatively fast, the end does not need to leave the process rib, the cutting section quality is good, the subsequent polishing workload is reduced, and the overall production efficiency of the device is high.

[0085] The H-shaped steel fish belly cutting device does not need to closely monitor and adjust the cutting position during the cutting process, reduces the nervousness and squatting time, is simple and reliable to operate, and significantly reduces the labor intensity.

[0086] The H-shaped steel fish belly cutting device has a simple and reliable structure, is relatively light in weight, is convenient to install, adjust, move, use and maintain, is strong in flexibility, and can be used for fish belly cutting of different specifications of H-shaped steel within a certain range through simple adjustment. The device has low cost and is suitable for small-batch and large-batch production.

[0087] The H-shaped steel fish belly cutting device cuts H-shaped steel in a centralized and side-by-side manner on the ground, has high site utilization rate, centrally hoists by a crown block, significantly reduces the waiting time of the crown block, arranges two people at one end to complete various processing actions on the ground, is simple and convenient to operate, has compact connection, minimizes personnel waiting waste, and has high labor efficiency.

[0088] Through rough comparison, the cutting quality of the device has obvious advantages compared with the "manual cutting method", the production efficiency is increased by more than 50%, and the labor intensity is obviously reduced; compared with the "small car guide rail cutting method", the cutting size is easier to guarantee, the section quality is better, the production efficiency is increased by about 10%, and the labor intensity is lower; compared with the "general numerical control equipment cutting method", the cutting size is easier to guarantee, the production efficiency is higher, the site occupied is less, and the process flow is smoother; compared with the "special numerical control equipment cutting method", the production efficiency is higher, the site occupied is less, the device cost is obviously reduced, and the use is more convenient.

[0089] The H-shaped steel fish belly cutting device is verified in the mass production of the railway wagon flat car center sill (H-shaped steel fish belly beam), practice shows that this method solves the problems of positioning and deformation in the previous fish belly cutting, the cutting quality is stable and reliable, the operation is convenient, the labor intensity is low, the production efficiency is high, and 4 people can produce more than 40 beams (20 vehicles) of fish belly cutting in a single shift, which lays a solid foundation for efficient and high-quality production of flat cars.

[0090] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0091] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A H-beam web cutting device, characterized by, The H-shaped steel fish belly cutting device comprises a left positioning assembly and a right positioning assembly, which are arranged at intervals along the distribution direction of the two flanges of the H-shaped steel, and each comprises a first walking wheel and a second walking wheel for contacting the vertical two sides of the H-shaped steel, at least one of the first walking wheel and the second walking wheel being used for contacting the outer side of the flange of the H-shaped steel. A telescopic connecting assembly is connected to the left positioning assembly and the right positioning assembly at both ends and is used for adjusting the distance between the left positioning assembly and the right positioning assembly. Two mounting positions for mounting cutting members are arranged on the left positioning assembly and the right positioning assembly, or are arranged at intervals on the telescopic connecting assembly, or one is arranged on the telescopic connecting assembly and the other is arranged on the left positioning assembly / right positioning assembly. Along the cutting direction, the two mounting positions are located behind the walking contact points of the first walking wheel and / or the second walking wheel. Among the various side faces of the H-shaped steel towards the external structure, in addition to the opposite side faces of the two flanges close to the web being inner side faces, along the cutting direction, the two side faces of the web along and extending in the cutting direction and the other side faces of the flanges are all outer side faces. The telescopic connecting assembly comprises a left support connected to the left positioning assembly, a right support connected to the right positioning assembly and arranged at intervals with the left support, and a central shaft connected to the left support and the right support at both ends.

2. The H-steel belly cutter of claim 1, wherein At least one of the left support, the right support and the central shaft is in a telescopic structure, or at least one of the left support and the right support is in sliding fit with the central shaft. The right support is in sliding fit with the central shaft, and the telescopic connecting assembly further comprises a locking member connected to the right part of the central shaft, and the right support is located between the locking member and the left support. The telescopic connecting assembly further comprises an elastic member sleeved on the central shaft, and the elastic member is located between the right support and the locking member and is in a compressed state when cutting the H-shaped steel. The central shaft comprises a threaded segment, and the telescopic connecting assembly further comprises a stop block in threaded connection with the threaded segment, and the stop block is located between the right support and the left support. The telescopic connecting assembly further comprises an adjusting pad block sleeved on the central shaft, and the adjusting pad block is arranged between the stop block and the right support or between the right support and the locking member.

3. The H-steel belly cutter of claim 2, wherein The H-shaped steel fish belly cutting device further comprises a power member for driving the left positioning assembly and the right positioning assembly to move along the cutting direction.

4. The H-steel belly cutter of claim 3, wherein The power member is connected with at least one of the left support, the right support and the central shaft, or the power member is connected with the left positioning assembly and / or the right positioning assembly.

5. The H-steel bunga cutting apparatus of claim 4, wherein, The wheel shaft of the first walking wheel is parallel to the distribution direction, and the wheel shaft of the first walking wheel and the wheel shaft of the second walking wheel are perpendicular, so that the first walking wheel contacts the web or the outer side of the flange parallel to the distribution direction, and the second walking wheel contacts the outer side of the flange perpendicular to the distribution direction.

6. The H-steel belly cutter of claim 5, wherein ​ 7. The H-steel bunga cutting apparatus of claim 2, wherein, ​ ​ 8. The H-steel belly cutter of any one of claims 1-7, wherein, ​ 9. The H-steel bunga cutting apparatus of claim 8, wherein, The left positioning assembly and the right positioning assembly are symmetrically distributed in the distribution direction; the left positioning assembly and the right positioning assembly are connected with the telescopic connecting assembly through the wheel shaft of the first walking wheel.

10. The H-steel bunga cutting apparatus of claim 9, wherein, The wheel shaft of the first walking wheel is a stepped shaft, the stepped shaft is arranged in the telescopic connecting assembly; along the axial direction of the stepped shaft, the telescopic connecting assembly is positioned on the stepped shaft and is arranged in a spaced manner with the first walking wheel.

11. The H-steel belly cutter of any one of claims 1-7, wherein, The left positioning assembly and the right positioning assembly each further comprise a connecting block, the wheel shaft of the first walking wheel and the wheel shaft of the second walking wheel are fixedly connected through the connecting block.

12. The H-steel belly cutter of any one of claims 1-7, wherein, The number of the left positioning assembly and the right positioning assembly is two, two left positioning assemblies are distributed in a spaced manner along the cutting direction, and two right positioning assemblies are distributed in a spaced manner along the cutting direction.

13. The H-steel belly cutter of any one of claims 1-7, wherein, The H-shaped steel fish belly cutting device further comprises two gun head fixing assemblies, the gun head fixing assembly comprises a connecting plate, a threaded fastener and a sleeve arranged on the connecting plate; the connecting plate is detachably connected to the telescopic connecting assembly; the central hole of the sleeve constitutes the mounting position, the sleeve is provided with a threaded hole in communication with the central hole, and the threaded fastener is arranged in the threaded hole and used for fixing the cutting member in the sleeve.

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