Porous cable bridge cutting device for constructional engineering

Abstract

The invention discloses a porous cable bridge cutting device for constructional engineering, and relates to the field of metal material shearing processing devices.The porous cable bridge cutting device comprises a shearing machine, the surface of the shearing machine is covered with a cable bridge blank, a clamping stepping mechanism is installed on one side of the surface of the shearing machine, a cutting mechanism is installed at the end of the shearing machine, and a supporting column is arranged on the cutting mechanism; the bottom of the supporting column is fixedly connected to the surface of the shearing machine, a top plate is fixedly installed at the top of the supporting column, an air cylinder is screwed to the top plate, and a butt-joint base is installed at the end of a piston rod of the air cylinder and fixedly connected to the outer side of the circumference of the cutting motor. According to the multi-hole cable bridge cutting device for constructional engineering, manual intervention is not needed, and then the production efficiency is improved; the rotation angle of the gear is changed through the stepping motor so as to change the movement length of the rack, and in this way, stepping adjustment work can be carried out on the cutting length needed by the cable bridge blank. And different requirements are met.

Description

Technical Field

[0001] The invention relates to the field of metal material shearing processing devices, in particular to a multi-hole cable bridge cutting device used in construction engineering. Background Art

[0002] At present, cable tray is a device used to protect cables. Cable trays are divided into trough type, tray type, ladder type, grid type and other structures. They are composed of brackets, brackets and installation accessories. Cable trays can be divided into five categories according to different manufacturing materials: steel cable trays, aluminum alloy cable trays, stainless steel cable trays, fiberglass cable trays and flame retardant cable trays.

[0003] When cutting the cable tray in the prior art, a special cutting device is required. Regarding the patent of the cable tray cutting device, the Chinese patent with the announcement number CN221134270U discloses a cable tray cutting device for construction engineering, which includes a workbench and two side plate frames, the workbench is provided with a groove, one side of the side plate frame is movably hinged with two movable rods, one end of the movable rod is rotatably connected to a roller, and an anti-slip roller is fixedly sleeved on the outer circumference of the roller, and both sides of the workbench are fixedly connected with fixed seats, one side of one of the fixed seats is installed with an electric telescopic rod, and the output end of the electric telescopic rod is fixedly connected to one side of one of the side plate frames, and the side plate frame and the fixed seat are jointly provided with a clamping auxiliary device;

[0004] Although the above-mentioned device can realize the synchronous movement of the two side plate frames by moving one of the side plate frames and driving the other side plate frame to move synchronously and relatively through the meshing setting of the active rack plate and the driven rack plate and the gear, there is no need to use multiple drive components to drive, which saves costs. However, in actual use, when the cutting motor drives the cutting disc knife to cut the cable tray, it is usually necessary to cut a longer cable tray into multiple groups of trays set at equal distances. First, the cutting position is marked on the cable tray with a marker pen, and then the cutting work is carried out. However, in actual use, after cutting a group of cable trays, it is necessary to manually adjust the position of the cable tray before performing subsequent cutting work, which requires manual intervention, which increases the time to cut a cable tray into multiple sections and reduces the working efficiency of the cutting equipment. Summary of the invention

[0005] The object of the present invention is to provide a multi-hole cable tray cutting device for construction engineering to solve the defects mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, a multi-hole cable tray cutting device for construction engineering is provided, including a shearing machine, the surface of the shearing machine is covered with a cable tray blank, a clamping stepping mechanism is installed on one side of the surface of the shearing machine, a cutting mechanism is installed on the end of the shearing machine, a support column is arranged on the cutting mechanism, the bottom of the support column is fixedly connected to the surface of the shearing machine, a top plate is fixedly installed on the top of the support column, a cylinder is screwed on the top plate, a docking seat is installed on the end of the piston rod of the cylinder, the docking seat is fixedly connected to the outer side of the circumference of the cutting motor, a circular knife saw is fixedly installed on the output shaft end of the cutting motor, a guard frame is installed on the outer side of the circular knife saw, and the guard frame is fixedly connected to the docking seat through the support frame; the shearing machine is provided with a receiving opening with a length greater than the diameter of the circular knife saw.

[0007] Furthermore, the cable tray blank is interspersed with inner supports A and B respectively. Both inner supports A and B are rectangularly arranged. An accommodating groove is opened between inner supports A and B. The accommodating groove is arranged opposite to the circular saw. The thickness of the circular saw is smaller than the width of the accommodating groove.

[0008] Furthermore, the clamping stepping mechanism includes a machine base, a stepping motor, a gear, a limiting rail, a mounting seat, a guide groove and a clamping seat. The machine base is screwed to the bottom of the shearing machine, the stepping motor is fixedly mounted on the machine base, and the gear is fixedly mounted on the end of the output shaft of the stepping motor.

[0009] Furthermore, a rack is installed on the upper side of the gear, the rack is fixedly connected to the bottom of the guide block, the guide block is movably inserted into the inside of the guide groove, the guide groove is opened inside the mounting seat, and the mounting seat is fixedly connected to the side wall of the shearing machine.

[0010] Furthermore, a clamping seat is movably installed on the surface of the mounting seat, and the clamping seat includes a clamping plate, a positioning plate, a connecting seat, a rear seat, a servo electric cylinder, a guide block and a rack. The bottom of the rear seat is fixedly connected to the rack through two sets of guide blocks, and a connecting seat is movably installed on the rear seat. The cross-section of the rear seat and the connecting seat is "U" shaped.

[0011] Furthermore, a clamping plate is installed on the surface of the connecting seat. The clamping plate is made of rubber material and has a serrated cross-section. Two sets of positioning plates are installed on the back of the clamping plate. The positioning plates are inserted into positioning grooves opened on the surface of the connecting seat. The back of the connecting seat is fixed to the piston rods of the two sets of servo electric cylinders. The two sets of servo electric cylinders operate synchronously, and the two sets of servo electric cylinders are screwed to the rear seat.

[0012] Furthermore, both sides of the rack are equipped with limit columns that are compatible with the size of the limit rail. The limit columns are movably inserted into the interior of the limit rail. The cross-sections of the limit columns and the limit rail are circular, and the limit rail is fixedly connected to the bottom of the shearing machine; the clamping seats are set to two groups and are respectively installed on both sides of the cable tray blank. At the same time, the two groups of clamping seats clamp and fix the cable tray blank and perform lateral stepping movements through gears, stepper motors and racks.

[0013] Furthermore, the cutting mechanism includes a top plate, a cylinder, a cutting motor, a docking seat, a guard frame, a circular saw, a connecting arm, an interference seat, a passive seat, a clamping seat, a guide column, a guide space, a support column and a guide seat. Connecting arms are fixedly installed on both sides of the guard frame, and the connecting arms are arranged in an "L" shape; guide seats are installed on both sides of the docking seat, and two groups of guide holes are opened on the guide seat, and the support column is inserted into the guide hole.

[0014] Furthermore, interference seats are installed at the bottom of the two groups of connecting arms, and passive seats are set at the bottom of the two groups of interference seats. The surface of the passive seat is provided with a passive inclined surface, and the bottom of the interference seat is provided with a downward pressing inclined surface, which covers the surface of the passive inclined surface.

[0015] Furthermore, a clamping seat is installed at the bottom of the passive seat, and two groups of guide spaces are opened inside the clamping seat. Guide columns are interspersed inside the two groups of guide spaces. A return spring is installed inside the guide space. The return spring is fixedly connected to the end of the guide column. The guide column is arranged in two groups and is respectively fixed on both sides of the bottom of the guide column.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the protective frame of the present invention moves downward, the connecting arms on both sides thereof move downward and squeeze the passive seat through the interference seat. At this time, a passive inclined surface is provided on the surface of the passive seat, and a downward pressing inclined surface is provided on the bottom of the interference seat. The downward pressing inclined surface covers the surface of the passive inclined surface, so that the two groups of passive seats move inward synchronously, and the two sides of the cable tray blank can be clamped and fixed. There is no need to install a cylinder clamp. The kinetic energy generated by the downward moving protective frame can be used to achieve this. The downward movement of the protective frame is used to achieve synchronous clamping and fixing of the cable tray blank on both sides through a mechanical structure, which can ensure that the clamping force applied to the two sides of the cable tray blank is uniform and consistent, ensuring that the blank maintains a stable position during the cutting process, which is conducive to improving the cutting quality.

[0018] 2. When the cable tray blank is cut into multiple sections, the present invention can drive the lateral movement through the clamping stepping mechanism, so that every time the cable tray blank moves a certain distance, the cable tray blank can be cut into sections by the cutting mechanism, thereby achieving the purpose of equidistant stepping cutting of the cable tray blank; the distance that the cable tray blank moves each time can be controlled to ensure that the length of each section of the bridge after cutting is basically the same, meeting the strict requirements of different projects on the bridge specifications, without manual intervention, thereby improving production efficiency; the rotation angle of the gear is changed by the stepping motor to change the movement length of the rack, and in this way, the required cutting length of the cable tray blank can be adjusted step by step; it can adapt to different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of the structure of the present invention;

[0020] Figure 2 The structure of the present invention Figure 1 Schematic diagram of the local structure;

[0021] Figure 3 for Figure 2 Bottom view of

[0022] Figure 4 for Figure 2 Side view of

[0023] Figure 5 for Figure 2 A top view of

[0024] Figure 6 It is a cross-sectional view of the structure of the present invention;

[0025] Figure 7 The structure of the present invention Figure 6 Side view of

[0026] Figure 8 It is a top view of the local structure of the shearing machine of the present invention.

[0027] [reference numerals]

[0028] 1. Shearing machine; 2. Clamping stepping mechanism; 21. Machine base; 22. Stepping motor; 23. Gear; 24. Limiting track; 25. Mounting seat; 26. Guide groove; 27. Clamping seat; 271. Clamping plate; 272. Positioning plate; 273. Connecting seat; 274. Back seat; 275. Servo electric cylinder; 2741. Guide block; 2742. Rack; 3. Cutting mechanism; 30. Top plate; 31. Cylinder; 32. Cutting motor; 33. Docking seat; 34. Guard frame; 35. Circular saw; 36. Connecting arm; 37. Interference seat; 38. Passive seat; 381. Clamping seat; 382. Guide column; 383. Guide space; 39. Support column; 391. Guide seat; 4. Cable tray blank; 41. Inner support A; 42. Inner support B. DETAILED DESCRIPTION

[0029] Specific implementation method 1: Please refer to Figure 1-Figure 8 The present invention provides a technical solution: a multi-hole cable tray cutting device for construction engineering, comprising a shearing machine 1, the surface of the shearing machine 1 is covered with a cable tray blank 4, a clamping stepping mechanism 2 is installed on one side of the surface of the shearing machine 1, a cutting mechanism 3 is installed at the end of the shearing machine 1, a support column 39 is arranged on the cutting mechanism 3, the bottom of the support column 39 is fixedly connected to the surface of the shearing machine 1, a top plate 30 is fixedly installed on the top of the support column 39, a cylinder 31 is screwed on the top plate 30, a docking seat 33 is installed at the end of the piston rod of the cylinder 31, the docking seat 33 is fixedly connected to the outer side of the circumference of a cutting motor 32, a circular knife saw 35 is fixedly installed at the end of the output shaft of the cutting motor 32, a guard frame 34 is installed on the outer side of the circular knife saw 35, and the guard frame 34 is fixedly connected to the docking seat 33 through a support frame; the shearing machine 1 is provided with a receiving opening whose length is greater than the diameter of the circular knife saw 35.

[0030] Working principle: During actual use, the cable tray blank 4 that needs to be cut into multiple sections is covered on the shearing machine 1, and the cutting positions on the cable tray blank 4 are respectively provided with internal supports A41 and internal supports B42, and a receiving groove opposite to the circular saw 35 is provided between the two. When the circular saw 35 rotates at high speed, it moves downward and cuts the cable tray blank 4. When the cable tray blank 4 is cut, the interior is supported by the internal supports A41 and internal supports B42 to avoid deformation and improve the quality of the cable tray after cutting and forming; the internal supports A41 and internal supports B42 can enable the cable tray blank 4 to maintain a stable shape and position during the cutting process, and prevent the blank from being deformed due to the pressure and vibration of the circular saw 35. The inner support can prevent the disc saw 35 from deforming or moving, thereby ensuring the dimensional accuracy and incision quality of the cutting, so that the cable tray after cutting meets the design requirements; the stable support helps the disc saw 35 to cut more smoothly, and reduces the tool jamming and wear caused by the shaking or deformation of the blank, thereby increasing the cutting speed, shortening the processing time, and improving work efficiency; because the inner support plays a good supporting role on the blank, the resistance of the tool during cutting is more uniform, avoiding the situation where the tool is subjected to excessive local force due to the instability of the blank, thereby reducing the wear of the tool, extending the service life of the tool, and reducing the frequency and cost of tool replacement; the stable inner support can prevent the blank from suddenly moving or popping out during the cutting process, reducing the risk of injury to the operator and enhancing the safety of the entire cutting work; the inner support The surfaces of A41 and inner support B42 are mounted on the top plate 30 through a bracket, which is not shown in the figure. When the cable tray blank 4 moves horizontally on the shearing machine 1, there will be no movement interference between the cable tray blank 4, the inner support A41, and the inner support B42; at the same time, when the cable tray blank 4 is cut, the specific operation method is: start the external switch of the cylinder 31, the output shaft of the cylinder 31 drives the docking seat 33 and the cutting motor 32 to move downward, and at the same time, the cutting motor 32 drives the disc saw 35 to rotate at high speed. The disc saw 35 moves downward while rotating and realizes the cutting of the cable tray blank 4. When the disc saw 35 is lifted or lowered, in order to avoid it from tilting, the guide seats 391 on both sides of the docking seat 33 are The support columns 39 are interspersed in the parts, which can limit and guide the disc saw 35 when it is lifted and lowered, so as to prevent the disc saw 35 from tilting when it is lifted and lowered, so that the disc saw 35 can accurately move downward and cut the cable tray blank 4. When the guard frame 34 moves downward, the connecting arms 36 on both sides thereof move downward and squeeze the passive seat 38 through the interference seat 37. At this time, a passive inclined surface is provided on the surface of the passive seat 38, and a downward pressing inclined surface is provided at the bottom of the interference seat 37. The downward pressing inclined surface covers the surface of the passive inclined surface, so that the two groups of passive seats 38 move inward synchronously, and the two sides of the cable tray blank 4 can be clamped and fixed. There is no need to install a cylinder clamp, and this can be achieved by the kinetic energy generated by the downward moving guard frame 34.There is no need to install cylinder clamps, which reduces the use of complex pneumatic components and related pipelines, making the structure of the entire cutting equipment simpler and more compact, reducing the size and weight of the equipment, and facilitating installation, maintenance and operation; since there is no need to purchase, install and maintain cylinder clamps and their supporting facilities, such as air source devices, control valves, etc., the purchase cost and operation and maintenance cost of the equipment can be significantly reduced; reducing the failure points of vulnerable parts such as cylinder clamps and complex pneumatic systems, reducing the probability of equipment shutdown due to pneumatic component failure, improving the reliability and stability of the equipment, and thus improving production efficiency; using the downward movement of the guard frame 34 to achieve synchronous clamping and fixing of the cable tray blank 4 on both sides through the mechanical structure, it can ensure that the clamping force applied to both sides of the cable tray blank 4 is uniform, ensuring that the blank maintains a stable position during the cutting process, which is beneficial to improving the cutting quality; when the guard frame 34 moves downward, it directly drives the machine The mechanical structure is clamped and fixed. Compared with the cylinder clamp which needs air supply, valve control and other processes, it has a faster response speed, can complete the clamping action in a short time, and improves production efficiency; there is no need to reserve space for the cylinder clamp and its related components, which can effectively save equipment installation space and make the equipment layout more reasonable, especially suitable for production sites with limited space; at the same time, when the passive seat 38 moves inward to squeeze the cutting position of the cable tray blank 4, the interior of the cable tray blank 4 is supported by the inner support A41 and the inner support B42 to avoid deformation, and at the same time, when the passive seat 38 moves inward, the guide column 382 is inserted into the guide space 383 and compresses the elasticity inside the guide space 383, so that when the force on the passive seat 38 disappears, the elasticity is reset, prompting the passive seat 38 to return to its initial position;

[0031] When the cable tray blank 4 is cut into multiple sections, it can be driven to move horizontally through the clamping stepping mechanism 2, so that every time the cable tray blank 4 moves a certain distance, the cable tray blank 4 can be cut into one section by the cutting mechanism 3, thereby achieving the purpose of equidistant stepping cutting of the cable tray blank 4; the distance that the cable tray blank 4 moves each time can be controlled to ensure that the length of each section of the bridge after cutting is basically the same, meeting the strict requirements of different projects on the specifications of the bridge; realizing automated stepping and cutting processes, reducing manual operations, improving production efficiency, reducing labor intensity, and being able to carry out continuous batch production to increase production capacity; the clamping stepping mechanism 2 can stably drive the cable tray blank 4 to move, ensuring the position accuracy of the blank during the cutting process, reducing cutting errors caused by unstable movement, and improving the stability of the production process and the reliability of product quality; the stepping distance and cutting length can be conveniently adjusted according to different production needs, and is suitable for a variety of specifications. and models of cable tray production, with high flexibility and versatility; accurate equidistant cutting can maximize the use of cable tray blank 4 materials, reduce material waste caused by dimensional errors, and reduce production costs; the specific method of clamping the stepping mechanism 2 is: first, the clamping plate 271 is driven to move horizontally by two sets of servo electric cylinders 275, and the distance between the two sets of clamping plates 271 is reduced to complete the clamping and fixing of the cable tray blank 4; at this time, the external switch of the stepping motor 22 is started, and the output shaft of the stepping motor 22 drives the gear 23 to rotate, and the gear 23 drives the rack 2742 to move horizontally, and the rack 2742 drives the clamping seat 27 to move horizontally through two sets of guide blocks 2741, and the rotation angle of the gear 23 is changed by the stepping motor 22 to change the movement length of the rack 2742. In this way, the required cutting length of the cable tray blank 4 can be adjusted step by step; adapt to different needs.

[0032] Specific implementation method two: This implementation method is a further limitation of specific implementation method one. The cable tray blank 4 is interspersed with inner supports A41 and inner supports B42 respectively. The inner supports A41 and B42 are both rectangular in shape. An accommodating groove is provided between the inner supports A41 and B42. The accommodating groove is arranged opposite to the circular saw 35. The thickness of the circular saw 35 is smaller than the width of the accommodating groove.

[0033] Specific implementation method three: This implementation method is a further limitation of specific implementation method one. The clamping stepping mechanism 2 includes a machine base 21, a stepping motor 22, a gear 23, a limiting rail 24, a mounting seat 25, a guide groove 26 and a clamping seat 27. The machine base 21 is screwed to the bottom of the shearing machine 1, and a stepping motor 22 is fixedly mounted on the machine base 21. A gear 23 is fixedly mounted on the end of the output shaft of the stepping motor 22.

[0034] Specific implementation method four: This implementation method is a further limitation of specific implementation method three. A rack 2742 is installed on the upper side of the gear 23. The rack 2742 is fixedly connected to the bottom of the guide block 2741. The guide block 2741 is movably inserted into the inside of the guide groove 26. The guide groove 26 is provided in the inside of the mounting seat 25. The mounting seat 25 is fixedly connected to the side wall of the shearing machine 1.

[0035] Specific embodiment five: This embodiment is a further limitation of specific embodiment four. A clamping seat 27 is movably mounted on the surface of the mounting seat 25. The clamping seat 27 includes a clamping plate 271, a positioning plate 272, a connecting seat 273, a rear seat 274, a servo electric cylinder 275, a guide block 2741 and a rack 2742. The bottom of the rear seat 274 is fixedly connected to the rack 2742 by two groups of guide blocks 2741. A connecting seat 273 is movably mounted on the rear seat 274. The cross-sections of the rear seat 274 and the connecting seat 273 are "U"-shaped.

[0036] Specific embodiment six: This embodiment is a further limitation of specific embodiment five. A clamping plate 271 is installed on the surface of the connecting seat 273. The clamping plate 271 is made of rubber material and has a sawtooth structure in cross section. Two groups of positioning plates 272 are installed on the back of the clamping plate 271. The positioning plates 272 are inserted into the positioning grooves provided on the surface of the connecting seat 273. The back of the connecting seat 273 is fixed to the piston rods of the two groups of servo electric cylinders 275. The two groups of servo electric cylinders 275 operate synchronously, and the two groups of servo electric cylinders 275 are screwed to the rear seat 274.

[0037] Specific implementation method seven: This implementation method is a further limitation of specific implementation method five. Limiting columns that are compatible with the size of the limiting rail 24 are installed on both sides of the rack 2742. The limiting columns are movably inserted into the interior of the limiting rail 24. The cross-sections of the limiting columns and the limiting rail 24 are circular. The limiting rail 24 is fixedly connected to the bottom of the shearing machine 1; the clamping seat 27 is set to two groups, which are respectively installed on both sides of the cable tray blank 4. At the same time, the two groups of clamping seats 27 clamp and fix the cable tray blank 4 and perform lateral stepping movement through the gear 23, the stepping motor 22 and the rack 2742.

[0038] Specific embodiment eight: This embodiment is a further limitation of specific embodiment one. The cutting mechanism 3 includes a top plate 30, a cylinder 31, a cutting motor 32, a docking seat 33, a protective frame 34, a circular saw 35, a connecting arm 36, an interference seat 37, a passive seat 38, a clamping seat 381, a guide column 382, ​​a guide space 383, a support column 39 and a guide seat 391. Connecting arms 36 are fixedly installed on both sides of the protective frame 34, and the connecting arms 36 are set in an "L" shape; guide seats 391 are installed on both sides of the docking seat 33, and two groups of guide holes are opened on the guide seat 391, and the support column 39 is inserted into the guide hole.

[0039] Specific embodiment nine: This embodiment is a further limitation of specific embodiment eight, and interference seats 37 are installed at the bottom of the two groups of connecting arms 36, and passive seats 38 are provided at the bottom of the two groups of interference seats 37. The surface of the passive seat 38 is provided with a passive inclined surface, and the bottom of the interference seat 37 is provided with a downward pressing inclined surface, which covers the surface of the passive inclined surface.

[0040] Specific embodiment ten: This embodiment is a further limitation of specific embodiment nine, a clamping seat 381 is installed at the bottom of the passive seat 38, two groups of guide spaces 383 are opened inside the clamping seat 381, guide columns 382 are inserted inside the two groups of guide spaces 383, a return spring is installed inside the guide space 383, the return spring is fixedly connected to the end of the guide column 382, ​​and the guide column 382 is arranged in two groups, which are respectively fixed on both sides of the bottom of the guide column 382.

Claims

1. A multi-hole cable tray cutting device for construction engineering, comprising a shearing machine (1), characterized in that: The surface of the shearing machine (1) is covered with a cable tray blank (4), a clamping stepping mechanism (2) is installed on one side of the surface of the shearing machine (1), a cutting mechanism (3) is installed at the end of the shearing machine (1), a support column (39) is arranged on the cutting mechanism (3), the bottom of the support column (39) is fixedly connected to the surface of the shearing machine (1), a top plate (30) is fixedly installed on the top of the support column (39), a cylinder (31) is screwed on the top plate (30), a docking seat (33) is installed at the end of the piston rod of the cylinder (31), the docking seat (33) is fixedly connected to the outer side of the circumference of the cutting motor (32), a circular saw (35) is fixedly installed at the output shaft end of the cutting motor (32), a guard frame (34) is installed on the outer side of the circular saw (35), and the guard frame (34) is fixedly connected to the docking seat (33) through a support frame; the shearing machine (1) is provided with a receiving opening whose length is greater than the diameter of the circular saw (35).

2. A porous cable tray cutting device for construction engineering according to claim 1, characterized in that: The cable tray blank (4) is respectively interspersed with an inner support A (41) and an inner support B (42), both of which are arranged in a rectangular shape. A receiving groove is provided between the inner support A (41) and the inner support B (42), and the receiving groove is arranged opposite to the circular saw (35), and the thickness of the circular saw (35) is smaller than the width of the receiving groove.

3. A porous cable tray cutting device for construction engineering according to claim 1, characterized in that: The clamping stepping mechanism (2) comprises a machine base (21), a stepping motor (22), a gear (23), a limiting track (24), a mounting seat (25), a guide groove (26) and a clamping seat (27); the machine base (21) is screwed to the bottom of the shearing machine (1); the stepping motor (22) is fixedly mounted on the machine base (21); and the gear (23) is fixedly mounted on the end of the output shaft of the stepping motor (22).

4. A porous cable tray cutting device for construction engineering according to claim 3, characterized in that: A rack (2742) is installed on the upper side of the gear (23), the rack (2742) is fixedly connected to the bottom of the guide block (2741), the guide block (2741) is movably inserted into the inside of the guide groove (26), the guide groove (26) is arranged inside the mounting seat (25), and the mounting seat (25) is fixedly connected to the side wall of the shearing machine (1).

5. A porous cable tray cutting device for construction engineering according to claim 4, characterized in that: A clamping seat (27) is movably mounted on the surface of the mounting seat (25). The clamping seat (27) comprises a clamping plate (271), a positioning plate (272), a connecting seat (273), a rear seat (274), a servo electric cylinder (275), a guide block (2741) and a rack (2742). The bottom of the rear seat (274) is fixedly connected to the rack (2742) via two groups of guide blocks (2741). A connecting seat (273) is movably mounted on the rear seat (274). The cross-sections of the rear seat (274) and the connecting seat (273) are arranged in a "U" shape.

6. A porous cable tray cutting device for construction engineering according to claim 5, characterized in that: The surface of the connecting seat (273) is installed with a clamping plate (271), which is made of rubber material and has a sawtooth-shaped cross-section. Two groups of positioning plates (272) are installed on the back of the clamping plate (271), and the positioning plates (272) are inserted into positioning grooves provided on the surface of the connecting seat (273). The back of the connecting seat (273) is fixed with piston rods of two groups of servo electric cylinders (275). The two groups of servo electric cylinders (275) operate synchronously, and the two groups of servo electric cylinders (275) are both screwed on the rear seat (274).

7. A porous cable tray cutting device for construction engineering according to claim 5, characterized in that: Limiting columns matching the size of the limiting rail (24) are installed on both sides of the rack (2742), and the limiting columns are movably inserted into the interior of the limiting rail (24). The cross-sections of the limiting columns and the limiting rail (24) are circular, and the limiting rail (24) is fixedly connected to the bottom of the shearing machine (1); the clamping seat (27) is set to two groups, which are respectively installed on both sides of the cable tray blank (4). At the same time, the two groups of clamping seats (27) clamp and fix the cable tray blank (4) and perform lateral stepping movement through the gear (23), the stepping motor (22) and the rack (2742).

8. The porous cable tray cutting device for construction engineering according to claim 1, characterized in that: The cutting mechanism (3) comprises a top plate (30), a cylinder (31), a cutting motor (32), a docking seat (33), a guard frame (34), a circular saw (35), a connecting arm (36), an interference seat (37), a passive seat (38), a clamping seat (381), a guide column (382), a guide space (383), a support column (39) and a guide seat (391). Connecting arms (36) are fixedly mounted on both sides of the guard frame (34), and the connecting arms (36) are arranged in an "L" shape; guide seats (391) are mounted on both sides of the docking seat (33), and two groups of guide holes are opened on the guide seat (391), and the support columns (39) are inserted into the guide holes.

9. A porous cable tray cutting device for construction engineering according to claim 8, characterized in that: The bottoms of the two groups of connecting arms (36) are both provided with interference seats (37), the bottoms of the two groups of interference seats (37) are both provided with passive seats (38), the surfaces of the passive seats (38) are provided with passive inclined surfaces, the bottoms of the interference seats (37) are provided with downward pressing inclined surfaces, and the downward pressing inclined surfaces cover the surfaces of the passive inclined surfaces.

10. A porous cable tray cutting device for construction engineering according to claim 9, characterized in that: A clamping seat (381) is installed at the bottom of the passive seat (38), and two groups of guide spaces (383) are opened inside the clamping seat (381). Guide columns (382) are inserted into the two groups of guide spaces (383). A return spring is installed inside the guide space (383), and the return spring is fixedly connected to the end of the guide column (382). The guide column (382) is arranged in two groups, which are respectively fixed on both sides of the bottom of the guide column (382).

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