CN212552187U

CN212552187U - Auxiliary device for cutting steel plate

Info

Publication number: CN212552187U
Application number: CN202021300014.2U
Authority: CN
Inventors: 刘承权; 李仁全; 肖健; 周军; 刘昌文
Original assignee: China 19th Metallurgical Corp
Current assignee: China 19th Metallurgical Corp
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-02-19
Anticipated expiration: 2030-07-06

Abstract

The utility model discloses an auxiliary device for cutting steel plates, which belongs to the technical field of steel plate cutting and provides a steel plate cutting auxiliary device for cutting steel plates, which can realize the cutting of steel plates in various directions such as horizontal, oblique, vertical and elevation positions, and comprises a fixing device (11), a walking track (31), a walking mechanism and a cutting gun head fixing device; two fixing devices (11) are arranged, and the two fixing devices (11) are distributed at intervals along the trend of the walking track (31); the cutting gun head fixing device comprises an L-shaped connecting plate (51), a circular sleeve (52), a first screwing handle (53), a cutting gun head fixing ring (54), an adjusting handle (55) and three second screwing handles (56). The utility model discloses showing and having reduced operating personnel's intensity of labour to showing straightness accuracy, groove angle, the cutting face roughness etc. that has improved the cutting of steel sheet, can showing and reduce cutting defect, improving the welding qualification rate.

Description

Auxiliary device for cutting steel plate

Technical Field

The utility model relates to a steel sheet cutting technical field especially relates to an auxiliary device is used in steel sheet cutting.

Background

In the process of manufacturing and installing a steel structure, cutting a steel plate material according to a design drawing is a necessary link, and generally, a numerical control automatic cutting machine tool and a semi-automatic cutting machine are adopted to firstly cut and groove parts and then assemble the parts. For some large components with ultra-wide and ultra-long dimensions or under uncertain field conditions, allowance is often reserved for the dimension of the components, and the allowance is cut in the links of factory or field pre-assembly and field installation, but at the moment, a numerical control automatic cutting machine tool and a semi-automatic cutting machine cannot be used, and are only suitable for transverse cutting which is convenient to operate, but are completely ineffective for cutting other orientations, such as vertical, elevation, inclined and the like. And automatic, semi-automatic cutting equipment all need the distribution work, but open-air, high altitude steel sheet structural installation is not convenient for distribute the power.

The existing manual cutting is limited by the technical level of workers, and the problems of large linear deviation of cutting edges, poor surface forming, deviation of groove angles and the like, even parent metal damage is easily caused by manual cutting and grooving. This causes great influence to subsequent welding quality, directly influences the welding qualification rate.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a can realize to the steel sheet cutting that is used for the steel sheet cutting auxiliary device of steel sheet cutting to various positions such as horizontal, oblique, perpendicular, face upward, can solve cutting edge linear deviation, poor, the groove angle deviation scheduling problem of surface shaping simultaneously for manual cutting.

The utility model provides a technical scheme that its technical problem adopted is: the auxiliary device for cutting the steel plate comprises a fixing device, a walking track, a walking mechanism and a cutting gun head fixing device;

the two fixing devices are distributed at intervals along the moving direction of the walking track, and each fixing device can be movably and adjustably mounted on the walking track along the moving direction of the walking track through a connecting piece;

the traveling mechanism is movably arranged on the traveling rail along the traveling rail and is positioned between the two fixing devices; the traveling mechanism comprises a fixed plate, and a sliding chute perpendicular to the direction of the traveling track is arranged on the fixed plate;

the cutting gun head fixing device comprises an L-shaped connecting plate, a circular sleeve, a first tightening handle, a cutting gun head fixing ring, an adjusting handle and three second tightening handles; one side plate of the L-shaped connecting plate is matched with the fixed plate in an attaching mode, an adjusting long hole which is consistent with the direction of the sliding groove is formed in the side plate, and the L-shaped connecting plate is installed on the fixed plate in a sliding adjusting mode along the sliding groove through the adjusting long hole through a locking bolt; the edge of the other side plate of the L-shaped connecting plate is fixedly connected with a circular sleeve, one end of an adjusting handle is movably inserted into the circular sleeve, the other end of the adjusting handle is fixedly connected with a cutting gun head fixing ring, three second tightening handles are arranged on the cutting gun head fixing ring at intervals along the circumferential direction of the cutting gun head fixing ring, and the inner ends of the three second tightening handles extend into the inner area of the cutting gun head fixing ring to form a clamping area; first handle of screwing up sets up on circular sleeve to the inner of first handle of screwing up stretches into in the circular sleeve back and can support tight cooperation with the regulation handle.

Further, the method comprises the following steps: the walking track is a square steel pipe, and a diagonal line of the square steel pipe is vertically arranged; the walking mechanism comprises four sets of bearing assemblies, wherein two sets of bearing assemblies are arranged on the upper half part of the walking track and are distributed at intervals along the trend of the walking track, and the other two sets of bearing assemblies are arranged on the lower half part of the walking track and are arranged in a mirror symmetry manner with the two sets of bearing assemblies corresponding to the upper half part; each set of bearing assembly comprises two bearings, a brake block, five nuts and a screw rod, and the screw rod is clamped and installed at the installation long hole of the fixing plate through one nut and the end cap of the screw rod; the other four nuts are sequentially sleeved on the screw rod, and the two bearings and the braking piece are sequentially clamped and fixedly connected to the screw rod; the rolling surfaces of the two bearings in each group of bearing assemblies are respectively in rolling fit with the two outer wall surfaces on the left side and the right side corresponding to the upper half part or the lower half part of the square steel pipe; the brake pads extend through bending and then pass through the peripheries of the rolling surfaces of the two bearings in the same set of bearing assembly to form brake ends, the rolling surfaces of the two bearings on the brake pads, which face the corresponding bearings, are respectively provided with a brake bump, the brake ends of the two brake pads in the two sets of bearing assemblies which are in up-down mirror symmetry relative to the walking track are connected through a brake screw rod, the brake screw rod is provided with an adjustable brake nut, and the distance between the two brake pads can be adjusted through the adjustment of the brake nut so as to realize the degree of brake tightness of each bearing in the two sets of bearing assemblies.

Further, the method comprises the following steps: the connecting piece includes connecting rod, sliding sleeve and puller bolt, and the one end and the fixing device of connecting rod are connected, and the other end and the sliding sleeve of connecting rod are connected, and the sliding sleeve is established on the walking track for moving ground cover, and the puller bolt is installed on sliding sleeve to the inner of puller bolt can support tight cooperation with the walking track after stretching into in the sliding sleeve.

Further, the method comprises the following steps: the tightening bolt is provided with a handle.

Further, the method comprises the following steps: the fixing device is a switch type magnetic base.

Further, the method comprises the following steps: the three second tightening handles are distributed along the circumferential direction of the cutting gun head fixing ring at equal angular intervals, namely, the included angle between every two adjacent second tightening handles is 120 degrees.

Further, the method comprises the following steps: the spout has two interval parallel arrangement's square steel to form between, and one of them curb plate of L shape connecting plate is placed between two square steel movably.

Further, the method comprises the following steps: the positioning steel needle is characterized by further comprising a positioning steel needle, one end of the positioning steel needle can be inserted into a clamping area formed by the inner ends of the three second tightening handles and is clamped and fixed, and the other end of the positioning steel needle is of a needle point structure.

The utility model has the advantages that: device when using, the cutting rifle head can be fixed on cutting auxiliary device, operating personnel only need control cutting speed during the cutting, only need control running gear promptly along the orbital removal velocity of walking can, reduced operating personnel's intensity of labour to showing straightness accuracy, groove angle, the cutting face roughness etc. that has improved the cutting of steel sheet, can showing and reduce cutting defect, improving the welding qualification rate. Further, since the entire steel plate is fixed by two simple fixing devices, the steel plate cutting machine is suitable for cutting steel plates in various operation orientations such as a horizontal position, an inclined position, a vertical position, and a tilted position. Because, the device also need not the distribution, solved open-air, high altitude steel sheet installation and need carry out the problem of distribution for a small amount of cutting.

Drawings

Fig. 1 is a three-dimensional schematic view of an auxiliary device for cutting a steel plate according to the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a left side schematic view of FIG. 2;

FIG. 4 is a schematic front side view of FIG. 2;

labeled as: the device comprises a fixing device 11, a connecting rod 21, a sliding sleeve 22, a jacking bolt 23, a traveling rail 31, a fixing plate 41, a mounting long hole 411, a bearing 42, a brake plate 43, a brake lug 431, a nut 44, a screw 45, a brake screw 46, a brake nut 461, square steel 47, an L-shaped connecting plate 51, an adjusting long hole 511, a locking bolt 512, a round sleeve 52, a first tightening handle 53, a cutting gun head fixing ring 54, an adjusting handle 55, a second tightening handle 56 and a positioning steel needle 57.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

It should be noted that, if the present invention relates to directional indication, such as terms of direction and orientation of up, down, left, right, front and back, it is to facilitate description of relative position relationship between members, and an absolute position that is not a relative position relationship between related members and members is specifically referred to, and is only used for explaining the relative position relationship between each member and motion situation under a certain specific posture, and if the specific posture is changed, the directional indication is changed accordingly.

The utility model discloses an auxiliary device for cutting steel plates, which comprises a fixing device 11, a walking track 31, a walking mechanism and a cutting gun head fixing device;

two fixing devices 11 are arranged, the two fixing devices 11 are distributed at intervals along the moving direction of the walking track 31, and each fixing device 11 can be movably and adjustably installed on the walking track 31 along the moving direction of the walking track 31 through a connecting piece;

the traveling mechanism is movably arranged on the traveling rail 31 along the traveling rail 31 and is positioned between the two fixing devices 11; the traveling mechanism comprises a fixed plate 41, and a sliding chute perpendicular to the direction of the traveling rail 31 is arranged on the fixed plate 41;

the cutting gun head fixing device comprises an L-shaped connecting plate 51, a circular sleeve 52, a first tightening handle 53, a cutting gun head fixing ring 54, an adjusting handle 55 and three second tightening handles 56; one side plate of the L-shaped connecting plate 51 is in close fit with the fixing plate 41, and an adjusting long hole 511 which is consistent with the direction of the sliding chute is arranged on the side plate, and the L-shaped connecting plate 51 is installed on the fixing plate 41 through the adjusting long hole 511 by a locking bolt 512 in a manner of being capable of sliding and adjusting along the sliding chute; the edge of the other side plate of the L-shaped connecting plate 51 is fixedly connected with a circular sleeve 52, one end of an adjusting handle 55 is movably inserted into the circular sleeve 52, the other end of the adjusting handle 55 is fixedly connected with a cutting gun head fixing ring 54, three second tightening handles 56 are arranged on the cutting gun head fixing ring 54 at intervals along the circumferential direction of the cutting gun head fixing ring 54, and the inner ends of the three second tightening handles 56 extend into the inner area of the cutting gun head fixing ring 54 to form a clamping area; the first tightening handle 53 is arranged on the circular sleeve 52, and the inner end of the first tightening handle 53 extends into the circular sleeve 52 and then can be in abutting fit with the adjusting handle 55.

The fixing device 11 supports the traveling rail 31 and a traveling mechanism mounted on the traveling rail 31 by a connecting member. More specifically, the utility model provides a connecting piece specifically can include connecting rod 21, sliding sleeve 22 and top tight bolt 23, and the one end and the fixing device 11 of connecting rod 21 are connected, and the other end and the sliding sleeve 22 of connecting rod 21 are connected, and sliding sleeve 22 establishes on walking track 31 for moving ground cover, and top tight bolt 23 is installed on sliding sleeve 22 to the inner of top tight bolt 23 stretches into in the sliding sleeve 22 back and can support tight cooperation with walking track 31. In this way, the position of the sliding sleeve on the traveling rail 31 can be adjusted as required to adjust the relative positions of the fixing devices 11 and the traveling rail 31, so that the length of the traveling rail 31 between the two fixing devices 11 meets the requirement of the traveling distance of the traveling mechanism in the subsequent cutting operation. During adjustment, the corresponding sliding sleeve 22 can slide along the traveling rail 31 only by loosening the corresponding tightening bolt 23, and after the sliding sleeve 22 slides to a required position, the tightening bolt 23 is tightened to lock the sliding sleeve 22. More specifically, in order to adjust the tightening bolt 23, a handle may be further provided on the tightening bolt 23.

In addition, for the fixing device 11, the utility model is preferably provided with a switch type magnetic base; the switch type magnetic base is characterized in that a corresponding switch is arranged on the fixing device 11, the switch is controlled to enable the fixing device 11 to generate a magnetic attraction effect or close the magnetic attraction effect, and then the fixing device is quickly and conveniently fixed on a steel plate in a magnetic attraction manner during installation; meanwhile, the position of the fixing device 11 can be conveniently adjusted when needed. Specifically, the switch type magnetic base belongs to the existing commodity, and if the switch type magnetic base of which the model is 6T is selected from Shanghai Xueyao hardware and electromechanical Co., Ltd, the switch type magnetic base does not need to be powered, is convenient to use, and has the size of 60 x 50 x 55 mm.

The traveling mechanism is used for moving along the traveling track 31 to drive the cutting gun head fixing device arranged on the traveling mechanism, so that the cutting gun head arranged on the cutting gun head fixing device can be moved, and the cutting operation of the cutting gun head can be realized. Specifically, in order to make the overall structure of the traveling mechanism and the traveling rail 31 simple, referring to the drawings, the traveling rail 31 may be a square steel pipe, and one diagonal line of the square steel pipe is vertically arranged; meanwhile, the walking mechanism comprises four sets of bearing assemblies, wherein two sets of bearing assemblies are arranged on the upper half part of the walking track 31 and are distributed at intervals along the trend of the walking track 31, and the other two sets of bearing assemblies are arranged on the lower half part of the walking track 31 and are arranged in mirror symmetry with the two sets of bearing assemblies corresponding to the upper half part; each set of bearing assembly comprises two bearings 42, a brake block 43, five nuts 44 and a screw 45, and the screw 45 is clamped and installed at the installation long hole 411 of the fixing plate 41 through one nut 44 and the end cap of the screw 45; the other four nuts 44 are sequentially sleeved on the screw rod 45, and the two bearings 42 and the brake pieces 43 are sequentially clamped and fixedly connected to the screw rod 45; rolling surfaces of two bearings 42 in each group of bearing assemblies are respectively in rolling fit with two outer wall surfaces on the left side and the right side corresponding to the upper half part or the lower half part of the square steel pipe; thus, the four sets of bearing assemblies can respectively clamp the main part from the upper part and the lower part of the walking track 31, so that the walking mechanism can only move along the walking track 31; meanwhile, the brake pads 43 extend through bending and then pass through the peripheries of the rolling surfaces of the two bearings 42 in the same set of bearing assembly to form braking ends, the braking protrusions 431 are respectively arranged on the brake pads 43 towards the rolling surfaces of the two corresponding bearings 42, the braking ends of the two brake pads 43 in the two sets of bearing assemblies which are vertically mirror-symmetrical relative to the running rail 31 are connected through a brake screw 46, an adjustable brake nut 461 is arranged on the brake screw 46, and the distance between the two brake pads 43 can be adjusted through the adjustment of the brake nut 461 so as to realize the degree of tightness of braking for each bearing 42 in the two sets of bearing assemblies. That is, the friction braking of the corresponding bearing can be realized by providing the brake pads 43, and the degree of tightness of the travel mechanism on the travel rail 31 can be adjusted and controlled. Thus, when the steel plate in the vertical direction is cut, the running rail 31 is in the vertical direction, and the friction resistance between the brake pads 43 and the rolling surfaces of the corresponding bearings 42 can be improved by controlling the brake pads 43, so as to counteract the influence of the self gravity of the running mechanism, and avoid the situation that the running mechanism slides down along the running rail 31 directly and quickly due to the self gravity. Of course, for example, when cutting a steel plate in the horizontal direction, the braking action of the brake pads 43 on the respective bearings 42 can be released or a relatively loose braking action can be applied only via the brake pads 43, so that the movement of the running gear can be driven more easily.

The utility model provides a cutting rifle head fixing device is the mechanism that is used for fixed mounting cutting rifle head to through with cutting rifle head fixed mounting cutting rifle head fixing device on, then through moving running gear along walking track 31, and then drive cutting rifle head fixing device and remove together with the cutting rifle head, in order to realize cutting operation. An adjusting long hole 511 is formed in the corresponding side plate of the L-shaped connecting plate 51, and the L-shaped connecting plate 51 is slidably adjusted along the sliding groove on the fixing plate 41 by a locking bolt 512 through the adjusting long hole 511. Therefore, the position of the L-shaped connecting plate 51 mounted on the sliding groove can be adjusted through the locking bolt 512, and the distance between the cutting gun head and the steel plate to be cut is finally adjusted. More specifically, the chute may be formed by two square steels 47 arranged in parallel at an interval, and at this time, one side plate of the L-shaped connecting plate 51 is movably placed between the two square steels 47, as shown in fig. 1; the slide grooves now mainly serve as a limiting guide for the corresponding side plates of the L-shaped connecting plate 51.

In addition, the edge of the other side plate of the L-shaped connecting plate 51 is fixedly connected with the circular sleeve 52, one end of the adjusting handle 55 is movably inserted into the circular sleeve 52, the adjusting handle 55 is rotated relative to the circular sleeve 52, and the adjusting handle 5 can be locked by the corresponding first tightening handle 53 after being adjusted in place; thus, the rotation adjustment of the cutting gun head fixing ring 54 can be realized, namely, the axial direction of the cutting gun head fixing ring 54 is adjusted; when the cutting gun head is arranged in the cutting gun head fixing ring 54, the cutting flame direction of the cutting gun head is approximately arranged in the same direction as the axial direction of the cutting gun head fixing ring 54, so that the adjustment of the cutting gun head fixing ring 54 is actually the adjustment of the cutting flame direction of the cutting gun head so as to finally adjust the deflection angle of the cutting surface of the steel plate relative to the surface of the steel plate; when the angle of the welding groove of the steel plate is cut, the angle can be adjusted by rotating the adjusting handle 5. Without loss of generality, the retaining ring 54 may actually consist of a relatively short section of steel tubing for the cutting tip.

Additionally, the utility model discloses in realize pressing from both sides tight fixed to the cutting rifle head, actually realize for screwing up handle 56 by above-mentioned three second. The three second tightening handles 56 may be disposed at equal angular intervals along the circumference of the cutting torch head fixing ring 54, that is, the included angle between two adjacent second tightening handles 56 is 120 °. And each second tightening handle 56 is telescopically adjustable by tightening to extend into the inner region of the cutting torch head fixing ring 54, and the inner ends of the three second tightening handles 56 can be clamped by the modified cutting torch head by adjusting the second tightening handles 56 to realize the fixing.

In addition, the utility model discloses in still further include a location steel needle 57, this location steel needle 57's one end is for inserting the clamping region who is screwed up the inner formation of handle 56 by three second in and tightly clamp fixedly, the other end of location steel needle 57 sets up to the needle point structure. Therefore, before cutting, the auxiliary device for cutting the steel plate of the utility model is usually required to be installed on the steel plate to be cut, and in order to improve the installation accuracy and ensure the cutting accuracy when the subsequent cutting gun head cuts, before installing the cutting gun head, the positioning steel needle 57 can be installed in the clamping area formed by the inner ends of the three second tightening handles 56 to replace the cutting gun head, then the walking mechanism is moved back and forth along the walking track 31 to confirm whether the needle point moving track of the positioning steel needle 57 coincides with the cutting line required to cut the steel plate, if the needle point moving track does not coincide, the installation position of the whole device still needs to be further adjusted, and at the moment, the fixed position of the fixing device 11 on the steel plate can be finely adjusted until the needle point moving track of the positioning steel needle 57 coincides with the cutting line; then, the positioning steel needle 57 is disassembled, and then the cutting gun head is installed at the position of the positioning steel needle 57 before the disassembly to replace the positioning steel needle; after which the ignition and the actual cutting operation can be carried out. It can be seen from the above that, by setting the positioning steel needle 57, the movement track of the cutting gun head can be tested in advance by the positioning steel needle 57, so as to judge whether the actual cutting track after the subsequent installation of the cutting gun head is consistent with the cutting line required to be cut, and further improve the cutting accuracy and precision.

Without loss of generality, the location on the positioning steel needle 57 that is inserted into the clamping area formed by the inner ends of the three second tightening handles 56 may further preferably be configured to conform to the corresponding size of the location on the cutting gun head that needs to be inserted into the clamping area; therefore, in the process of mounting the cutting gun head after dismounting the positioning steel needle 57, the adjustment sizes of the three second tightening handles 56 are very small, the mounting posture of the cutting gun head can be kept basically consistent with that of the positioning steel needle 57 after mounting, and the influence on the mounting precision of the cutting gun head in the process of mounting the cutting gun head after dismounting the positioning steel needle 57 is reduced. Specifically, the portions of the positioning steel needle 57 inserted into the clamping areas formed by the inner ends of the three second tightening handles 56 are provided in a cylindrical structure having a size corresponding to the size of the corresponding portions of the cutting torch head.

The invention takes the vertical position beveling cutting of the web steel plate of the on-site butt joint of the steel box bridge as an example, and the specific implementation steps are as follows:

A. determining the size of a part, which is to be cut off, of a web plate at the butt joint of the steel box bridge, and drawing a cutting line needing to be cut by using a marking tool such as a stone pen or a marking pen; when the cutting line is scribed, the cutting line is comprehensively determined according to the plate thickness, the groove angle parameter and the like.

B. Selecting a traveling rail 31 having a length suitable for the length of the cutting line of the steel plate, and assembling the traveling rail 31 to form the auxiliary device for cutting the steel plate; then, after the position of the fixing device 11 relative to the walking track 31 is adjusted according to the cutting line, the fixing device 11 is locked and fixed on the walking track 31; then, the whole auxiliary device for cutting the steel plate is initially fixedly installed on the steel plate through the two fixing devices 11, and the walking track 31 corresponds to the direction of the cutting line; during installation, the positions of the two fixing devices 11 on the steel plate can be roughly adjusted preliminarily, so that the walking track 31 is roughly parallel to the cutting line, and after the cutting gun head is installed subsequently, the moving track of the cutting gun head along the walking track 31 is predicted to be roughly consistent with the trend of the cutting line.

C. A positioning steel needle 57 is coaxially installed in the cutting gun head fixing ring 54, wherein one end of the positioning steel needle 57 is inserted into a clamping area formed by the inner ends of the three second tightening handles 56 and is clamped and fixed, and the other end of the positioning steel needle 57 is provided with a needle point structure.

D. Determining cutting angle parameters required by a cutting line according to the groove angle parameters of the steel plate, and then adjusting the rotation angle of the adjusting handle 55 in the circular sleeve 52 to ensure that the axial direction of the positioning steel needle 57 is consistent with the cutting angle parameters required by the cutting line, so that the inclination angle of the cutting surface can be ensured to meet the groove angle requirement in the subsequent cutting process; meanwhile, the position of the L-shaped connecting plate 51 in the chute is further adjusted in the step, so that the needle point of the positioning steel needle 57 is close to the cutting line; therefore, whether the moving track of the needle point is overlapped with the cutting line or not can be observed more conveniently.

E. The travelling mechanism is moved back and forth along the travelling track 31, whether the needle point moving track of the positioning steel needle 57 is overlapped with the cutting line or not is confirmed, if not, the fixing position of the fixing device 11 on the steel plate is finely adjusted until the needle point moving track of the positioning steel needle 57 is overlapped with the cutting line; the purpose of this step is to test by pre-installing the positioning steel needle 57 before installing the cutting torch head for actual cutting, to verify the accuracy of the installation position of the whole cutting auxiliary device, and to finely adjust the installation position of the cutting auxiliary device in accordance with the test condition. In addition, in this step, since there is a case of adjusting the fixing device 11, the position of the L-shaped connecting plate 51 in the chute can be further finely adjusted such that the needle tip of the positioning steel needle 57 is close to the cutting line.

F. Disassembling the positioning steel needle 57, and then installing the cutting gun head at the position before the positioning steel needle 57 is disassembled to replace the positioning steel needle; when the cutting gun head is replaced by the positioning steel needle 57, the cutting flame direction of the cutting gun head is ensured to be approximately consistent with the axis of the positioning steel needle 57 before being detached, and the cutting flame direction is also approximately consistent with the axis of the cutting gun head fixing ring 54, because the axis of the positioning steel needle 57 before being detached is basically kept to be collinear with the axis of the cutting gun head fixing ring 54.

G. And igniting the cutting gun head to cut the steel plate, and moving the travelling mechanism along the travelling track 31 in the cutting process so that the cutting gun head cuts the steel plate along the cutting line until the cutting is finished. Of course, the moving speed of the walking mechanism should be controlled according to the actual cutting situation, and particularly, the operator can actually control the moving speed.

In addition, since the web plate beveling in the above example is in the vertical position, the traveling mechanism is relatively labored to use under the action of gravity, and is easily slid down under the influence of gravity, at this time, the corresponding brake nut 461 should be adjusted to make the brake block 431 of the brake block 43 contact with the rolling surface of the corresponding bearing 42 to generate frictional braking resistance, so as to prevent the traveling mechanism from naturally sliding down; meanwhile, when the cutting operation is carried out, the cutting operation from top to bottom is more comfortable and convenient.

Claims

1. Auxiliary device is used in steel sheet cutting, its characterized in that: comprises a fixing device (11), a walking track (31), a walking mechanism and a cutting gun head fixing device;

the two fixing devices (11) are arranged, the two fixing devices (11) are distributed at intervals along the moving direction of the walking track (31), and each fixing device (11) can be movably and adjustably installed on the walking track (31) along the moving direction of the walking track (31) through a connecting piece;

the traveling mechanism is movably arranged on the traveling rail (31) along the traveling rail (31) and is positioned between the two fixing devices (11); the traveling mechanism comprises a fixed plate (41), and a sliding chute perpendicular to the direction of the traveling track (31) is arranged on the fixed plate (41);

the cutting gun head fixing device comprises an L-shaped connecting plate (51), a circular sleeve (52), a first tightening handle (53), a cutting gun head fixing ring (54), an adjusting handle (55) and three second tightening handles (56); one side plate of the L-shaped connecting plate (51) is in fit with the fixing plate (41) in a sticking way, an adjusting long hole (511) which is consistent with the direction of the sliding chute is arranged on the side plate, and the L-shaped connecting plate (51) is arranged on the fixing plate (41) in a manner of being capable of sliding and adjusting along the sliding chute through the adjusting long hole (511) by a locking bolt (512); the edge of the other side plate of the L-shaped connecting plate (51) is fixedly connected with a circular sleeve (52), one end of an adjusting handle (55) is movably inserted into the circular sleeve (52), the other end of the adjusting handle (55) is fixedly connected with a cutting gun head fixing ring (54), three second tightening handles (56) are arranged on the cutting gun head fixing ring (54) at intervals along the circumferential direction of the cutting gun head fixing ring (54), and the inner ends of the three second tightening handles (56) extend into the inner area of the cutting gun head fixing ring (54) to form a clamping area; the first tightening handle (53) is arranged on the circular sleeve (52), and the inner end of the first tightening handle (53) extends into the circular sleeve (52) and then can be abutted and matched with the adjusting handle (55).

2. The auxiliary device for cutting a steel plate according to claim 1, wherein: the walking track (31) is a square steel pipe, and a diagonal line of the square steel pipe is vertically arranged; the walking mechanism comprises four sets of bearing assemblies, wherein two sets of bearing assemblies are arranged at the upper half part of the walking track (31) and are distributed at intervals along the trend of the walking track (31), and the other two sets of bearing assemblies are arranged at the lower half part of the walking track (31) and are arranged in mirror symmetry with the two sets of bearing assemblies corresponding to the upper half part; each set of bearing assembly comprises two bearings (42), a brake block (43), five nuts (44) and a screw rod (45), and the screw rod (45) is clamped and installed at the installation long hole (411) of the fixing plate (41) through one nut (44) and the end cap of the screw rod (45); the other four nuts (44) are sequentially sleeved on the screw rod (45), and the two bearings (42) and the brake pieces (43) are sequentially clamped and fixedly connected to the screw rod (45); rolling surfaces of two bearings (42) in each group of bearing assemblies are respectively in rolling fit with two outer wall surfaces on the left side and the right side corresponding to the upper half part or the lower half part of the square steel pipe; the brake pads (43) extend through bending and then pass through the peripheries of the rolling surfaces of the two bearings (42) in the same set of bearing assemblies to form brake ends, the brake pads (43) are respectively provided with brake lugs (431) towards the rolling surfaces of the two corresponding bearings (42), the brake ends of the two brake pads (43) in the two sets of bearing assemblies which are vertically mirror-symmetrical relative to the walking rail (31) are connected through a brake screw rod (46), the brake screw rod (46) is provided with an adjustable brake nut (461), and the distance between the two brake pads (43) can be adjusted through the adjustment of the brake nut (461) so as to realize the degree of brake tightness of the bearings (42) in the two sets of bearing assemblies.

3. The auxiliary device for cutting a steel plate according to claim 1, wherein: the connecting piece includes connecting rod (21), sliding sleeve (22) and puller bolt (23), the one end and the fixing device (11) of connecting rod (21) are connected, the other end and sliding sleeve (22) of connecting rod (21) are connected, sliding sleeve (22) are established on walking track (31) for moving about, puller bolt (23) are installed on sliding sleeve (22), and the inner of puller bolt (23) stretches into behind sliding sleeve (22) can support tight cooperation with walking track (31).

4. The auxiliary device for cutting a steel plate according to claim 3, wherein: the puller bolt (23) is provided with a handle.

5. The auxiliary device for cutting a steel plate according to claim 1, wherein: the fixing device (11) is a switch type magnetic base.

6. The auxiliary device for cutting a steel plate according to claim 1, wherein: the three second tightening handles (56) are distributed along the circumferential direction of the cutting gun head fixing ring (54) at equal angular intervals, namely, the included angle between every two adjacent second tightening handles (56) is 120 degrees.

7. The auxiliary device for cutting a steel plate according to claim 1, wherein: the sliding groove is formed between two square steels (47) which are arranged in parallel at intervals, and one side plate of the L-shaped connecting plate (51) is movably arranged between the two square steels (47).

8. The auxiliary device for cutting a steel plate according to any one of claims 1 to 7, wherein: the novel screw tightening device further comprises a positioning steel needle (57), one end of the positioning steel needle (57) can be inserted into a clamping area formed by the inner ends of the three second screw tightening handles (56) and clamped and fixed, and the other end of the positioning steel needle (57) is of a needle point structure.