阅读说明：本技术 一种钢轨自动切割装置 (Automatic cutting device for steel rail ) 是由 彭克立 刘萍 吕国庆 于 2020-12-28 设计创作，主要内容包括：本发明提供一种钢轨自动切割装置,涉及切割机技术领域,包括固定架和安装结构,固定架的表面固定连接有防护罩,固定架的内部转动连接有转轴,转轴靠近防护罩的一侧转动连接有切割片,转轴的表面设有安装结构,安装结构包括套环,套环与转轴的侧壁活动连接,套环的内壁固定连接有四个伸缩杆,两个伸缩杆靠近转轴的一端固定连接有限位板,转轴的侧壁开设有限位槽,限位槽的尺寸与限位板的尺寸相适配。本发明解决了当需要对切割机上的切割片进行更换时,通常需要拧动螺丝对切割片进行拆卸与安装,当转轴上的螺丝拧动较紧时不便于工作人员对切割片的更换,从而降低了工作人员工作效率的问题。(The invention provides an automatic steel rail cutting device, which relates to the technical field of cutting machines and comprises a fixing frame and a mounting structure, wherein a protective cover is fixedly connected to the surface of the fixing frame, a rotating shaft is rotatably connected to the inside of the fixing frame, one side of the rotating shaft, which is close to the protective cover, is rotatably connected with a cutting blade, the surface of the rotating shaft is provided with the mounting structure, the mounting structure comprises a lantern ring, the lantern ring is movably connected with the side wall of the rotating shaft, the inner wall of the lantern ring is fixedly connected with four telescopic rods, one ends of the two telescopic rods, which are close to the rotating shaft, are fixedly connected. The invention solves the problems that when the cutting blade on the cutting machine needs to be replaced, the screw is usually required to be screwed to disassemble and assemble the cutting blade, and when the screw on the rotating shaft is screwed tightly, the cutting blade is inconvenient to replace by workers, so that the working efficiency of the workers is reduced.)

1. The utility model provides a rail automatic cutting device, includes mount (1) and mounting structure (5), its characterized in that: the surface of the fixing frame (1) is fixedly connected with a protective cover (4), the fixing frame (1) is rotatably connected with a rotating shaft (2), one side of the rotating shaft (2) close to the protective cover (4) is rotatably connected with a cutting blade (3), the surface of the rotating shaft (2) is provided with a mounting structure (5), the mounting structure (5) comprises a lantern ring (503), the lantern ring (503) is movably connected with the side wall of the rotating shaft (2), the inner wall of the lantern ring (503) is fixedly connected with four telescopic rods (506), one end of each telescopic rod (506) close to the rotating shaft (2) is fixedly connected with a limiting plate (508), the side wall of the rotating shaft (2) is provided with a limiting groove (511), the size of the limiting groove (511) is matched with the size of the limiting plate (508), the surface of each telescopic rod (506) is sleeved with a first spring (507), one end of the first spring (507) is, one end, far away from the limiting plate (508), of the first spring (507) is fixedly connected with the inner wall of the lantern ring (503).

2. An automatic cutting device for steel rails according to claim 1, characterized in that: the lantern ring (503) is close to four locating pins (510) of the even fixedly connected with of one end of cutting piece (3), pivot (2) are close to fixed surface that mount (1) is connected with and keep off ring (501), keep off the surface of ring (501) and evenly seted up the circular port, the size of circular port and the size looks adaptation of locating pin (510), four locating holes have evenly been seted up on the surface of cutting piece (3), the size of locating hole and the size looks adaptation of locating pin (510).

3. An automatic cutting device for steel rails according to claim 1, characterized in that: two constant head tanks (512) have evenly been seted up to the diapire of spacing groove (511), two one side fixedly connected with locating lever (505) that limiting plate (508) are close to each other, the size of locating lever (505) and the size looks adaptation of constant head tank (512).

4. An automatic cutting device for steel rails according to claim 1, characterized in that: one side of each of the two spacing plates (508) far away from each other is fixedly connected with a pull rope (504), the side wall of the lantern ring (503) is fixedly connected with two U-shaped blocks (502), the inner wall of each U-shaped block (502) is rotatably connected with a pulley (509), and the side wall of each pull rope (504) is slidably connected with the pulley (509).

5. An automatic cutting device for steel rails according to claim 1, characterized in that: the surface of the protective cover (4) is provided with a protective device (6), the protective device (6) comprises two first pressing plates (604), the two first pressing plates (604) are movably connected with the inner wall of the protective cover (4), the surfaces of the two first pressing plates (604) far away from each other are rotatably connected with two rotating rods (606), one ends of the two rotating rods (606) penetrating through the protective cover (4) are fixedly connected with supporting blocks (601), the two sides of the first pressing plates (604) are fixedly connected with rectangular plates (607), the surfaces of the two rectangular plates (607) far away from the first pressing plates (604) are provided with T-shaped grooves, the inner walls of the T-shaped grooves are slidably connected with limiting pins (608), the surfaces of the two limiting pins (608) far away from the first pressing plates (604) are fixedly connected with second pressing plates (611), and one sides of the second pressing plates (611) and the first pressing plates (604) far away from the inner wall of the protective cover (4) are, the inner wall joint of draw-in groove has sealed pad (605), the surface cover of bull stick (606) has third spring (613), the both ends of third spring (613) respectively with protection casing (4) and first clamp plate (604) fixed connection.

6. An automatic cutting device for steel rails according to claim 5, characterized in that: the both sides of second clamp plate (611) all slide and insert and be equipped with sliding pin (609), sliding pin (609) keep away from one end fixedly connected with circle piece (602) of lantern ring (503), sliding pin (609)'s surperficial sliding connection has the spacing ring, sliding pin (609)'s surface cover has second spring (610), the both ends of second spring (610) respectively with spacing ring and circle piece (602) fixed connection, sliding pin (609) keep away from one end fixedly connected with stopper (612) of circle piece (602).

7. An automatic cutting device for steel rails according to claim 1, characterized in that: the surface of the second pressing plate (611) is provided with a limiting hole (603), and the size of the limiting hole (603) is matched with that of the limiting block (612).

8. An automatic cutting device for steel rails according to claim 1, characterized in that: the surface of second clamp plate (611) is equipped with and colludes structure (7), collude structure (7) including elasticity rope (71), the fixed surface of elasticity rope (71) and second clamp plate (611) is connected, the one end fixedly connected with couple (73) that second clamp plate (611) was kept away from in elasticity rope (71), the fixed surface of protection casing (4) is connected with loop bar (72), couple (73) collude with the inner wall of loop bar (72) mutually.

9. An automatic cutting device for steel rails according to claim 8, characterized in that: the end face of the hook (73) is fixedly connected with a rectangular block (76), and a sliding rod (75) is inserted into the rectangular block (76) close to the inner portion of the elastic rope (71) in a sliding mode.

10. An automatic cutting device for steel rails according to claim 9, characterized in that: one side of the slide bar (75) close to the hook (73) is provided with a circular groove, and the inner wall of the circular groove is clamped with a magnetic block (74).

Technical Field

The invention relates to the technical field of cutting machines, in particular to an automatic steel rail cutting device.

Background

The cutting machine is classified into a flame cutting machine, a plasma cutting machine, a laser cutting machine, water cutting, and the like. The laser cutting machine has the fastest efficiency, the highest cutting precision and the generally smaller cutting thickness, the plasma cutting machine has the fast cutting speed, the cutting surface has certain inclination, the flame cutting machine is aiming at the carbon steel material with larger thickness, along with the development of the modern machining industry, the requirements on the cutting quality and precision are continuously improved, and the requirements on the improvement of the production efficiency, the reduction of the production cost and the high-intelligent automatic cutting function are also improved.

The utility model discloses a railway cutting machine, including the cutting machine, the cutting machine is used to the railway and can be used to the rail and cut, can be equipped with the cutting piece on the cutting machine, and the cutting piece is usually through the pivot threaded connection on nut and the cutting machine, when the cutting piece on the cutting machine needs to be changed, need twist the screw usually and dismantle and install the cutting piece, and the staff of being not convenient for when changeing epaxial screw and twist more change the cutting piece to staff's work efficiency has been reduced.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an automatic steel rail cutting device.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a rail automatic cutting device, includes mount and mounting structure, the fixed surface of mount is connected with the protection casing, the inside of mount is rotated and is connected with the pivot, one side that the pivot is close to the protection casing is rotated and is connected with the cutting piece, the surface of pivot is equipped with mounting structure, mounting structure includes the lantern ring, the lateral wall swing joint of the lantern ring and pivot, four telescopic links of the inner wall fixedly connected with of the lantern ring, the telescopic link is close to the one end fixedly connected with limiting plate of pivot, the spacing groove has been seted up to the lateral wall of pivot, the size of spacing groove and the size looks adaptation of limiting plate, telescopic link surface cover has first spring, the one end and the limiting plate fixed connection of first spring, the one end of limiting plate and the inner wall fixed connection of the.

Preferably, the lantern ring is close to four locating pins of the even fixedly connected with of one end of cutting piece, the fixed surface that the pivot is close to the mount is connected with and keeps off the ring, the circular port has evenly been seted up on the surface that keeps off the ring, the size of circular port and the big or small looks adaptation of locating pin, four locating holes have evenly been seted up on the surface of cutting piece, the size of locating hole and the big or small looks adaptation of locating pin.

Preferably, two constant head tanks have evenly been seted up to the diapire of spacing groove, two one side fixedly connected with locating lever that the limiting plate is close to each other, the size of locating lever and the big or small looks adaptation of constant head tank.

Preferably, one side fixedly connected with stay cord that two the limiting plate kept away from each other, the lateral wall fixedly connected with two U-shaped pieces of the lantern ring, the inner wall of U-shaped piece rotates and is connected with the pulley, the lateral wall and the pulley sliding connection of stay cord.

Preferably, the surface of the protective cover is provided with a protective device, the protective device comprises two first pressing plates, the two first pressing plates are movably connected with the inner wall of the protective cover, the surfaces of the two first pressing plates, which are far away from each other, are rotatably connected with two rotating rods, one ends of the two rotating rods, which penetrate through the protective cover and are far away from the first pressing plates, are fixedly connected with supporting blocks, rectangular plates are fixedly connected to both sides of the first pressing plate, T-shaped grooves are formed in the surfaces, far away from the first pressing plate, of the two rectangular plates, limiting pins are connected to the inner walls of the T-shaped grooves in a sliding mode, second pressing plates are fixedly connected to the surfaces, far away from the first pressing plate, of the two limiting pins, the sides of the second pressing plate and the first pressing plate far away from the inner wall of the protective cover are both provided with a clamping groove, the inner wall of the clamping groove is clamped with a sealing gasket, the surface of the rotating rod is sleeved with a third spring, and two ends of the third spring are fixedly connected with the protective cover and the first pressing plate respectively.

Preferably, sliding pins are inserted into two sides of the second pressing plate in a sliding mode, one ends, far away from the lantern ring, of the sliding pins are fixedly connected with round blocks, the surface of each sliding pin is connected with a limiting ring in a sliding mode, a second spring is sleeved on the surface of each sliding pin, two ends of each second spring are fixedly connected with the limiting rings and the round blocks respectively, and one ends, far away from the round blocks, of the sliding pins are fixedly connected with limiting blocks.

Preferably, a limiting hole is formed in the surface, far away from the second pressing plate on the fixing frame, and the size of the limiting hole is matched with that of the limiting block.

Preferably, the surface of second clamp plate is equipped with and colludes the structure, collude the structure and include the elasticity rope, the fixed surface of elasticity rope and second clamp plate is connected, the one end fixedly connected with couple that the second clamp plate was kept away from to the elasticity rope, the fixed surface of protection casing is connected with the loop bar, the couple colludes with the inner wall of loop bar mutually.

Preferably, the end face of the hook is fixedly connected with a rectangular block, and a slide bar is inserted into the rectangular block close to the elastic rope in a sliding mode.

Preferably, a circular groove is formed in one side, close to the hook, of the sliding rod, and a magnetic block is clamped on the inner wall of the circular groove.

Compared with the prior art, the invention has the advantages and positive effects that,

1. in the invention, by arranging the mounting structure, when the cutting piece is required to be mounted, the positioning hole on the cutting piece is sleeved into the positioning pin on the sleeve ring, the pull rope is pulled by hand, the pull rope can slide on the surface of the pulley on the U-shaped block, the pull rope can drive the limiting plate to move towards the direction close to the inner wall of the sleeve ring, at the moment, the sleeve ring can be sleeved on the surface of the rotating shaft and slide towards the direction close to the fixing frame, when the limiting plate on the inner wall of the sleeve ring slides to the position corresponding to the limiting groove, the limiting plate can be clamped into the inner wall of the limiting groove by the elastic force of the first spring on the inner wall of the sleeve ring, so that the effect of sleeving the sleeve ring on the surface of the rotating shaft can be achieved, when the positioning rod on the limiting plate rotates to the position corresponding to the, thereby can reach and prevent that the lantern ring can be at the epaxial pivoted effect of commentaries on classics, the cutting blade can be blocked between fender ring and the lantern ring this moment, thereby reached the effect of installing the cutting blade, wherein the telescopic link makes a round trip to stretch out and draw back between limiting plate and the lantern ring has the effect of the first spring force direction of restriction, wherein the stay cord slides on the pulley surface and has the pulling force direction that changes the stay cord, the pulling force of staff pulling stay cord has been alleviateed, the problem that the staff of being not convenient for when changeing epaxial screw and twist to move when tighter carries out the change to the cutting blade has been solved in setting up of mounting.

2. According to the invention, through the arrangement of the protective device, after the cutting machine is used, the supporting block is rotated to rotate out of the protective cover, the first pressing plate is pressed on the cutting sheet by the elastic force of the third spring on the inner wall of the protective cover, the two second pressing plates are close to each other, the round block is rotated to align the position of the limiting block on the round block with the position of the limiting hole, the round block is pressed and drives the sliding pin to further drive the limiting block to slide to the other side of the limiting hole, the round block is rotated to enable the limiting block to rotate to the position capable of clamping the limiting hole, the round block is loosened, the limiting block is supported at the position of the limiting hole by the elastic force of the second spring between the limiting ring and the round block on the sliding pin, so that the two second pressing plates can be close to each other, at the moment, the sealing gaskets on the first pressing plate and the second pressing plate can play a role of protecting the cutting sheet, and the arrangement of the protective device solves the, there is a problem that may cause corrosion of the cutting blade when working in a relatively humid environment.

3. According to the invention, through the arrangement of the hooking structure, when the cutting machine needs to be normally used, the limiting pin slides in the T-shaped groove on the inner wall of the rectangular plate on the first pressing plate, when the limiting pin slides to the side far away from the protective cover, the second pressing plate is rotated, the hook on the second pressing plate is hooked in the loop bar on the protective cover, so that the effect of retracting the second pressing plate is achieved, the sliding rod on the sliding rod is slid to attract the magnetic block on the sliding rod and the magnetic block on the hook, the problem that the hook is likely to be unhooked from the loop bar due to shaking in the use process of the cutting machine is prevented, and the hooking structure is convenient to retract the second pressing plate on the protective cover, so that the effect of normally using the cutting machine is not influenced.

Drawings

FIG. 1 is a schematic perspective view of an automatic cutting device for steel rails according to the present invention;

FIG. 2 is a schematic structural view of a rotating shaft of an automatic cutting device for steel rails according to the present invention;

FIG. 3 is a schematic structural diagram of an installation structure of an automatic rail cutting device according to the present invention;

FIG. 4 is a schematic side view of the automatic rail cutting device shown in FIG. 2;

FIG. 5 is a schematic structural diagram of a shield of an automatic steel rail cutting device according to the present invention;

FIG. 6 is a schematic side view of the automatic rail cutting device shown in FIG. 5;

FIG. 7 is a schematic structural diagram of a guard of an automatic rail cutting device according to the present invention;

FIG. 8 is a schematic structural diagram of a first pressing plate of an automatic rail cutting device according to the present invention;

FIG. 9 is a schematic view of the structure at the position A of FIG. 8 in an automatic cutting device for steel rails according to the present invention

Fig. 10 is a schematic structural diagram of a hooking structure in an automatic steel rail cutting device according to the present invention.

Illustration of the drawings: 1. a fixed mount; 2. a rotating shaft; 3. cutting the slices; 4. a protective cover; 5. a mounting structure; 501. a baffle ring; 502. a U-shaped block; 503. a collar; 504. pulling a rope; 505. positioning a rod; 506. a telescopic rod; 507. a first spring; 508. a limiting plate; 509. a pulley; 510. positioning pins; 511. a limiting groove; 512. positioning a groove; 6. a guard; 601. a support block; 602. a round block; 603. a limiting hole; 604. a first platen; 605. a gasket; 606. a rotating rod; 607. a rectangular plate; 608. a spacing pin; 609. a slide pin; 610. a second spring; 611. a second platen; 612. a limiting block; 613. a third spring; 7. a hooking structure; 71. an elastic cord; 72. a loop bar; 73. hooking; 74. a magnetic block; 75. a slide bar; 76. a rectangular block.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

Embodiment 1, as shown in fig. 1 to 10, the present invention provides an automatic steel rail cutting device, which includes a fixed frame 1 and a mounting structure 5, wherein a surface of the fixed frame 1 is fixedly connected with a protective cover 4, an inner portion of the fixed frame 1 is rotatably connected with a rotating shaft 2, one side of the rotating shaft 2 close to the protective cover 4 is rotatably connected with a cutting blade 3, the surface of the rotating shaft 2 is provided with the mounting structure 5, the surface of the protective cover 4 is provided with a protective device 6, and the surface of a second pressing plate 611 is provided with a hooking structure 7.

The specific arrangement and function of the mounting structure 5, guard 6 and hooking structure 7 will be described in detail below.

As shown in fig. 1 and fig. 3, the mounting structure 5 includes a collar 503, a collar 503 is rotated, when the positioning rod 505 on the positioning plate 508 rotates to a position corresponding to the positioning slot 512 on the inner wall of the positioning slot 511, the positioning plate 508 will be driven by the elastic force of the first spring 507 on the inner wall of the collar 503 to slide the positioning rod 505 into the inner wall of the positioning slot 512, so as to achieve the effect of preventing the collar 503 from rotating on the shaft 2, at this time, the cutting blade 3 will be clamped between the stop ring 501 and the collar 503, so as to achieve the effect of mounting the cutting blade 3, the collar 503 is movably connected with the side wall of the shaft 2, the inner wall of the collar 503 is fixedly connected with four telescopic rods 506, wherein the telescopic rods 506 are telescopic back and forth between the positioning plate 508 and the collar 503 to have the effect of limiting the elastic force direction of the first spring 507, one end of the two telescopic, the size of the limit groove 511 is matched with the size of the limit plate 508, the surface of the telescopic rod 506 is sleeved with a first spring 507, through the arrangement of the installation structure 5, when the cutting blade 3 needs to be installed, the positioning hole on the cutting blade 3 is sleeved into the positioning pin 510 on the lantern ring 503, at the moment, the pull rope 504 is pulled by hand, the pull rope 504 slides on the surface of the pulley 509 on the U-shaped block 502, the pull rope 504 drives the limit plate 508 to move towards the direction close to the inner wall of the lantern ring 503, at the moment, the lantern ring 503 is sleeved on the surface of the rotating shaft 2, the lantern ring 503 slides towards the direction close to the fixed frame 1, when the limit plate 508 on the inner wall of the lantern ring 503 slides to the position corresponding to the limit groove 511, the limit plate 508 is clamped into the inner wall of the limit groove 511 by the elastic force of the first spring 507 on the inner wall of the lantern ring 503, one end of the first spring 507 far away from the limiting plate 508 is fixedly connected with the inner wall of the lantern ring 503, one end of the lantern ring 503 near the cutting blade 3 is uniformly and fixedly connected with four positioning pins 510, the surface of the rotating shaft 2 near the fixing frame 1 is fixedly connected with a baffle ring 501, the surface of the baffle ring 501 is uniformly provided with a circular hole, the size of the circular hole is matched with that of the positioning pins 510, the surface of the cutting blade 3 is uniformly provided with four positioning holes, the size of the positioning holes is matched with that of the positioning pins 510, the bottom wall of the limiting groove 511 is uniformly provided with two positioning grooves 512, one side of the two limiting plates 508 near each other is fixedly connected with a positioning rod 505, the size of the positioning rod 505 is matched with that of the positioning grooves 512, one side of the two limiting plates 508 far away from each other is fixedly connected with a, the pull rope 504 slides on the surface of the pulley 509, the direction of the pulling force of the pull rope 504 is changed, the pulling force of a worker pulling the pull rope 504 is reduced, and the side wall of the pull rope 504 is connected with the pulley 509 in a sliding mode.

The whole installation structure 5 achieves the effect that by arranging the installation structure 5, when the cutting blade 3 needs to be installed, the positioning hole on the cutting blade 3 is firstly sleeved into the positioning pin 510 on the lantern ring 503, at the moment, the pull rope 504 is pulled by hand, the pull rope 504 slides on the surface of the pulley 509 on the U-shaped block 502, the pull rope 504 drives the limiting plate 508 to move towards the direction close to the inner wall of the lantern ring 503, at the moment, the lantern ring 503 can be sleeved on the surface of the rotating shaft 2, the lantern ring 503 slides towards the direction close to the fixed frame 1, when the limiting plate 508 on the inner wall of the lantern ring 503 slides to the position corresponding to the limiting groove 511, the limiting plate 508 is clamped into the inner wall of the limiting groove 511 by the elastic force of the first spring 507 on the inner wall of the lantern ring 503, so that the effect of sleeving the lantern ring 503 on the surface of the rotating shaft 2 can be achieved, when, limiting plate 508 can receive the elasticity of the first spring 507 of lantern ring 503 inner wall to drive locating lever 505 and slide into the inner wall of constant head tank 512, thereby can reach and prevent that lantern ring 503 from can rotating effect in pivot 2, cutting piece 3 can be blocked between fender ring 501 and lantern ring 503 this moment, thereby the effect of installing cutting piece 3 has been reached, wherein telescopic link 506 makes a round trip to stretch out and draw back between limiting plate 508 and lantern ring 503 and has the effect of the first spring 507 elasticity direction of restriction, wherein stay cord 504 has the pulling force direction that changes stay cord 504 in pulley 509 surface slip, the pulling force of staff pulling stay cord 504 has been alleviateed, the problem that the staff of not being convenient for when the screw on pivot 2 is twisted and is moved tightly is changed cutting piece 3 has been solved in the setting of mounting structure 5.

As shown in fig. 1 and 7, the protection device 6 includes two first pressing plates 604, the two first pressing plates 604 are movably connected to the inner wall of the protection cover 4, the surfaces of the two first pressing plates 604 that are far away from each other are rotatably connected with two rotating rods 606, one end of the two rotating rods 606 that penetrate through the protection cover 4 and are far away from the first pressing plates 604 is fixedly connected with a supporting block 601, two sides of the first pressing plates 604 are fixedly connected with rectangular plates 607, the surfaces of the two rectangular plates 607 that are far away from the first pressing plates 604 are provided with T-shaped grooves, the inner walls of the T-shaped grooves are slidably connected with limiting pins 608, the surfaces of the two limiting pins 608 that are far away from the first pressing plates 604 are fixedly connected with second pressing plates 611, one sides of the second pressing plates 611 and the first pressing plates 604 that are far away from the inner walls of the protection cover 4 are provided with clamping grooves, the inner walls of the clamping grooves are clamped with, the surface of the rotating rod 606 is sleeved with a third spring 613, by arranging the protection device 6, after the cutting machine is used, the supporting block 601 is rotated to rotate out of the protective cover 4, at the moment, the first pressing plate 604 is pressed on the cutting blade 3 by the elastic force of the third spring 613 on the inner wall of the protective cover 4, the two second pressing plates 611 are close to each other, two ends of the third spring 613 are respectively and fixedly connected with the protective cover 4 and the first pressing plate 604, two sides of the second pressing plate 611 are respectively and slidably inserted with a sliding pin 609, one end of the sliding pin 609 far away from the sleeve ring 503 is fixedly connected with a round block 602, the surface of the sliding pin 609 is slidably connected with a limiting ring, the surface of the sliding pin 609 is sleeved with a second spring 610, the round block 602 is rotated to align the position of a limiting block 612 on the round block 602 with the limiting hole 603, the round block 602 is pressed, the round block 602 can drive the sliding pin 609 to further drive the limiting block 612 to slide to, the limiting block 612 is rotated to a position where the limiting hole 603 can be clamped, the round block 602 is loosened at the moment, the limiting block 612 can be supported at the limiting hole 603 by the elastic force of the second spring 610 between the limiting ring and the round block 602 on the sliding pin 609, so that the effect of pressing the two second pressing plates 611 close to each other can be achieved, two ends of the second spring 610 are respectively fixedly connected with the limiting ring and the round block 602, the limiting block 612 is fixedly connected to one end, away from the round block 602, of the sliding pin 609, the limiting hole 603 is formed in the surface, away from the second pressing plate 611 on the fixing frame 1, and the size of the limiting hole 603 is matched with the size of the limiting block 612.

The whole protection device 6 achieves the effect that by arranging the protection device 6, after the cutting machine is used, the supporting block 601 is rotated to enable the supporting block 601 to rotate out of the protective cover 4, at the moment, the first pressing plate 604 is pressed on the cutting blade 3 by the elastic force of the third spring 613 on the inner wall of the protective cover 4, the two second pressing plates 611 are close to each other, the round block 602 is rotated to enable the position of the limiting block 612 on the round block 602 to be aligned with the position of the limiting hole 603, the round block 602 is pressed, the round block 602 drives the sliding pin 609 to further drive the limiting block 612 to slide to the other side of the limiting hole 603, at the moment, the round block 602 is rotated to enable the limiting block 612 to rotate to the position capable of clamping the limiting hole 603, at the moment, the round block 602 is loosened, the limiting block 612 is supported at the position of the limiting hole 603 by the elastic force of the second spring 610 between the limiting ring and the round block 602 on the sliding pin, the sealing gaskets 605 on the first pressure plate 604 and the second pressure plate 611 can protect the cutting blade 3, and the arrangement of the protective device 6 solves the problem that the cutting blade 3 on the cutting machine is mostly made of ferrous materials, which may cause corrosion of the cutting blade 3 when working in a heavy moisture environment.

As shown in fig. 1 and 10, the hooking structure 7 includes an elastic rope 71, the elastic rope 71 is fixedly connected to the surface of the second pressing plate 611, a hook 73 is fixedly connected to one end of the elastic rope 71 away from the second pressing plate 611, by providing the hooking structure 7, when the cutting machine needs to be used normally, a position-limiting pin 608 is slid in a T-shaped groove on the inner wall of the rectangular plate 607 of the first pressing plate 604, when the position-limiting pin 608 slides to a side away from the shield 4, the second pressing plate 611 is rotated to hook the hook 73 on the second pressing plate 611 into the loop bar 72 on the shield 4, so as to achieve the effect of retracting the second pressing plate 611, the loop bar 72 is fixedly connected to the surface of the shield 4, the hook 73 is hooked to the inner wall of the loop bar 72, a rectangular block 76 is fixedly connected to the end surface of the hook 73, a sliding bar 75 is slidably inserted into the rectangular block 76 near the elastic rope 71, a circular groove is formed on one side of the sliding, the magnetic block 74 is clamped on the inner wall of the circular groove, the sliding rod 75 on the sliding hook 73 attracts the magnetic block 74 on the sliding rod 75 and the magnetic block 74 on the hook 73, and therefore the problem that the hook 73 is likely to be unhooked from the loop bar 72 due to shaking in the using process of the cutting machine is solved.

The effect that its whole structure 7 of hooking reaches does, through setting up structure 7 of hooking, when needs normal use cutting machine, the spacer pin 608 that slides in the T-slot of rectangular plate 607 inner wall on the first clamp plate 604 now, when spacer pin 608 slides to keeping away from protection casing 4 one side, rotate second clamp plate 611, hook 73 on the second clamp plate 611 in loop bar 72 on protection casing 4, thereby reached the effect of packing up second clamp plate 611, slide bar 75 on the slide bar 73, attract mutually with the magnetic path 74 on the slide bar 75 and the magnetic path 74 on the hook 73, thereby prevented that cutting machine can shake in the use and probably lead to the problem that hook 73 unhook from loop bar 72, hook structure 7's reaching is convenient for pack up second clamp plate 611 on protection casing 4, from not influencing the effect of cutting machine normal use.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.