CN113664289A

CN113664289A - Single-end saw cutting noise-reducing dustproof device

Info

Publication number: CN113664289A
Application number: CN202111044821.1A
Authority: CN
Inventors: 王文胜; 高阳; 叶长清
Original assignee: Anhui Xin Ye Ankang Windows And Doors Curtain Wall Co ltd
Current assignee: Xinye Ankang Technology Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2021-11-19
Anticipated expiration: 2041-09-07
Also published as: CN113664289B

Abstract

The invention relates to the technical field of single-head saw cutting noise-reducing and dust-preventing devices, and discloses a single-head saw cutting noise-reducing and dust-preventing device, which comprises a workbench and a single-head saw arranged on the workbench, wherein the single-head saw comprises a cutting part and a bearing plate positioned right below the cutting part, the single-head saw also comprises a protective cover arranged outside the single-head saw and used for absorbing noise, two opposite outer sides of the protective cover are respectively provided with a sealing unit used for fixing an aluminum profile, one end of the sealing unit is provided with a driving unit used for driving the sealing unit to seal the protective cover and a limiting unit used for locking the driving unit, the noise is reduced through the protective cover, the production working environment is greatly improved, meanwhile, a fixed plate supports against the aluminum profile, the aluminum profile is tightly attached to the inner wall of a feed chute, the feed chute is blocked, a relatively closed space is formed in the protective cover, the noise is prevented from being transmitted, and a movable plate tightly presses on the aluminum profile, the aluminum profile is prevented from moving during cutting.

Description

Single-end saw cutting noise-reducing dustproof device

Technical Field

The invention relates to the technical field of single-head saw cutting noise reduction and dust prevention devices, in particular to a single-head saw cutting noise reduction and dust prevention device.

Background

The production process flow of the aluminum alloy doors and windows mainly comprises three steps of blanking, processing and assembling, wherein the blanking is particularly critical in the three processes, if the precision of the initial section is low, the rejection rate of the finally obtained section is high, the processing time of the initial section is too long, and the period of the whole production process is also prolonged. The frame material cutting, the frame fan corner brace cutting and the fan material cutting are mainly carried out in the blanking stage, common tools are a single-head cutting saw, a double-head cutting saw and a corner brace cutting saw, and the single-head cutting saw is mainly used for cutting frame type materials.

According to application number 201620419804.X, a single-end saw that can cut in succession is disclosed, including workstation, motor case and saw bit, be equipped with first guide rail on the workstation, sliding connection has first slider on the first guide rail, fixedly connected with longitudinal support on the first slider, the horizontal bracing piece of longitudinal support pole one end fixedly connected with, be equipped with the second guide rail on the horizontal bracing piece, second guide rail sliding connection has the second slider, the second slider with motor case fixed connection, the saw bit with motor case rotates to be connected. Promote the longitudinal support pole during use and slide along first guide rail, when the longitudinal support pole slides to the position that the bar needs the cutting, the saw bit is rotatory when starting the motor case, then promotes the second slider and slides along horizontal bracing piece, and the second slider can drive motor case and saw bit lateral shifting, cuts the aluminium template in proper order.

The shortcoming of prior art lies in, current single-end saw cutting machine because there is not noise insulation, and the cutting machine exposes outside completely when the cutting aluminium alloy, therefore the noise is very big, and because there is not protector, can cause the indiscriminate phenomenon of flying of aluminium bits when producing, not only causes serious noise pollution, but also seriously harms workman's healthy, in order to improve the on-the-spot production operational environment of cutting machine, the urgent need design one kind is fit for single-end saw cutting machine and falls the device of making an uproar.

Disclosure of Invention

The invention aims to provide a single-head saw cutting noise-reduction dustproof device, which reduces noise through a protective cover, greatly improves the production working environment, simultaneously, a fixed plate props against an aluminum profile, so that the aluminum profile is tightly attached to the inner wall of a feeding groove, the feeding groove is blocked, a relatively closed space is formed in the protective cover, the noise is prevented from being transmitted, and a movable plate is tightly pressed on the aluminum profile, so that the aluminum profile is prevented from moving during cutting.

Technical scheme

In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme: the utility model provides a dust keeper of making an uproar falls in single-end saw cutting, includes the workstation and installs additional the single-end saw on the workstation, the single-end saw is including cutting the piece and being located the loading board under the cutting piece, still including set up in the single-end saw outside just is used for noise absorption's protection casing, two outsides that the protection casing is relative all are provided with the sealed unit that is used for fixed aluminium alloy, the one end of sealed unit is provided with and is used for ordering about the sealed unit is sealed the drive unit of protection casing with be used for the locking drive unit's spacing unit.

Preferably, the sealing unit comprises a fixed plate, a movable plate and a movable plate, the fixed plate is slidably connected to the outer side wall of the workbench through a guide rail arranged on the outer side wall of the workbench, the movable plate is slidably connected to the inside of the fixed plate along the horizontal direction, a feeding groove is formed in the fixed plate and communicated with the protective cover through a feeding port formed in the protective cover, the movable plate is slidably connected to the inside of the feeding groove along the vertical direction and penetrates through the top of the fixed plate, and a clamping groove which is matched with the movable plate is formed in the movable plate.

Preferably, the limiting unit comprises a driven plate and second inclined teeth, the driven plate is fixedly mounted on the opposite side surfaces of the two fixed plates, and the second inclined teeth are fixedly mounted on the adjacent side surfaces of the two driven plates.

Preferably, the driving unit comprises a U-shaped strip, a third hydraulic cylinder and an oil supply pipe, wherein two supports of the U-shaped strip are respectively and fixedly installed at two ends of the movable plate, the movable plate is back to the back, the third hydraulic cylinder is fixedly installed at the inner side of the U-shaped strip, and the oil supply pipe is additionally installed at two output ends of the third hydraulic cylinder.

Preferably, the protective cover comprises an iron sheet cover, a polyurethane sound-insulating plate and a porous calcium silicate sound-absorbing plate, the iron sheet cover is located on the outer side of the single-end saw and is additionally arranged on the workbench, the polyurethane sound-insulating plate is additionally arranged on the inner side of the iron sheet cover, the porous calcium silicate sound-absorbing plate is additionally arranged on the inner side of the polyurethane sound-insulating plate, and a cavity is formed between the polyurethane sound-insulating plate and the porous calcium silicate sound-absorbing plate.

Preferably, the mobile phone further comprises a second locking unit, the second locking unit comprises a second fixing box, a second hydraulic cylinder, an L-shaped insert block and a second spring, the second fixing box is fixedly installed on the movable plate back to back, the second hydraulic cylinder is fixedly installed on the inner wall of the second fixing box, the other end of the oil supply pipe is installed on the second hydraulic cylinder, one end of the L-shaped insert block is installed in the second hydraulic cylinder, the other end of the L-shaped insert block is meshed with the second helical teeth, and the second spring is installed between the L-shaped insert block and the second fixing box.

Preferably, still include first locking unit, first locking unit includes first skewed tooth, first inserted block, the first spring of first fixed box and first pneumatic cylinder, first fixed box fixed mounting in on the lateral wall of metal sheet cover, install first pneumatic cylinder additional in the first fixed box, the output of first pneumatic cylinder is equipped with first inserted block additional, the guide slot has been seted up to the bottom of fixed plate, and fixed mounting has first skewed tooth in the guide slot, the one end that first inserted block is located the guide slot with first skewed tooth meshes mutually, first inserted block is located fixed mounting has first spring on the outer wall of one end in the first fixed box, the other end fixed mounting of first spring in on the first pneumatic cylinder.

Preferably, an electric piston rod is fixedly mounted on the outer wall of the iron sheet cover, and the output end of the electric piston rod is additionally mounted at the input end of the third hydraulic cylinder.

Compared with the prior art, the single-head saw cutting noise-reduction dustproof device provided by the embodiment of the invention has the following beneficial effects:

according to the invention, a polyurethane sound insulation plate is additionally arranged on the inner side of the iron sheet cover, a porous calcium silicate sound absorption plate is additionally arranged on the inner side of the polyurethane sound insulation plate, the polyurethane sound insulation plate and the porous calcium silicate sound absorption plate are separated by a support, and a cavity is arranged between the polyurethane sound insulation plate and the porous calcium silicate sound absorption plate. Polyurethane acoustic celotex board and porous calcium silicate abatvoix are good sound insulation material, and form porous, loose sealed soundproof room, noise to low frequency high decibel has better noise reduction, production operational environment has greatly been improved, install the aluminium bits simultaneously additional on the workstation and retrieve the box, the box is retrieved to the aluminium bits is located the protection casing under, produced aluminium bits during the work production, the dust enters into the aluminium bits by the passageway of protection casing rear side and retrieves the box, the injury that the aluminium bits splashed and produce the human body has been solved.

The invention applies vertical pulling force on a movable plate, the movable plate relieves the sealing of a feed chute to ensure that the feed chute is completely leaked, then aluminum profiles enter a protective cover from the feed chute and are placed on a bearing plate, whether the aluminum profiles are aligned with a cutting piece or not is observed through a transparent observation port arranged at one side of the protective cover adjacent to a driving unit, when the aluminum profiles are aligned with the cutting piece, the movable plate is released, the movable plate moves downwards under the action of self gravity and props against the aluminum profiles to electrify an electric piston rod, the electric piston rod is shortened to ensure that the output end of the third hydraulic cylinder is driven by the electric piston rod to be far away from a third hydraulic cylinder, pulling force is applied on a U-shaped strip to ensure that the U-shaped strip drives the movable plate to slide in a fixed plate and slide into the fixed plate, and the fixed plate props against the aluminum profiles to ensure that the aluminum profiles are tightly attached to the inner wall of the feed chute, so that the feeding groove is blocked, and a relatively closed space is formed in the protective cover, thereby preventing noise from being transmitted.

According to the aluminum profile cutting device, the movable plate slides in the fixed plate through the driving unit, the feeding chute is blocked while the aluminum profile is fixed, meanwhile, the movable plate is locked through the second locking unit, the movable plate is prevented from moving back, meanwhile, the position of the fixed plate is fixed through the first locking unit, when the movable plate slides in the fixed plate, the movable plate can push the fixed plate to have a tendency of moving away from the driving unit, the fixed plate can be fixed through the first inclined teeth and the first inserting blocks, the movable plate can be tightly pressed on the aluminum profile, and the aluminum profile is prevented from moving during cutting.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the protective cover of the present invention;

FIG. 3 is a schematic cross-sectional view of the shield according to the present invention;

FIG. 4 is a schematic cross-sectional view of a sealing unit and a first locking unit according to the present invention;

FIG. 5 is a schematic view of the structure at A in FIG. 3 according to the present invention.

In the figure: 1. a work table; 2. a protective cover; 3. a sealing unit; 4. a limiting unit; 5. a drive unit; 6. an electric piston rod; 7. a guide rail; 8. a first locking unit; 9. a transparent viewing port; 10. cutting the piece; 11. a carrier plate; 12. a second hydraulic cylinder; 13. an L-shaped insert block; 14. a second spring; 15. an aluminum scrap recovery box; 16. a second locking unit; 161. a second stationary box; 21. a sheet iron cover; 22. a polyurethane sound barrier; 23. a porous calcium silicate acoustical panel; 31. a fixing plate; 32. a movable plate; 33. a feed chute; 34. moving the plate; 41. a passive plate; 42. a second helical tooth; 51. u-shaped strips; 52. a third hydraulic cylinder; 53. an oil supply pipe; 81. a first helical tooth; 82. a first insert block; 83. a first stationary box; 84. a first spring; 85. a first hydraulic cylinder.

Detailed Description

So that the objects, technical solutions and advantages of the embodiments of the present disclosure will be more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

As shown in fig. 1 to 5, the single-end saw cutting noise reduction and dust prevention device provided by the present invention includes a workbench 1 and a single-end saw installed on the workbench 1, wherein the single-end saw includes a cutting member 10 and a bearing plate 11 located right below the cutting member 10, and further includes a protective cover 2 installed outside the single-end saw and used for absorbing noise, a polyurethane acoustic baffle 22 is installed on the inner side of an iron sheet cover 21, a porous calcium silicate acoustic baffle 23 is installed on the inner side of the polyurethane acoustic baffle 22, and the polyurethane acoustic baffle 22 and the porous calcium silicate acoustic baffle 23 are separated by a bracket and have a cavity therebetween. The polyurethane sound insulation board 22 and the porous calcium silicate sound absorption board 23 are good sound insulation materials, a porous and loose sealed sound insulation chamber is formed, a good noise reduction effect is achieved on low-frequency high-decibel noise, the production working environment is greatly improved, meanwhile, the aluminum scrap recovery box 15 is additionally arranged on the workbench 1, the aluminum scrap recovery box 15 is located under the protective cover 2, aluminum scraps and dust generated in working production enter the aluminum scrap recovery box 15 through a channel on the rear side of the protective cover 2, the problem of injury to a human body caused by aluminum scrap splashing is solved, sealing units 3 used for fixing aluminum profiles are arranged on two opposite outer sides of the protective cover 2, vertical tension is applied to the movable board 34, the movable board 34 removes sealing of the feeding groove 33, the feeding groove 33 is completely leaked, the aluminum profiles enter the protective cover 2 from the feeding groove 33 and are placed on the bearing board 11, whether the aluminum profiles and cutting profiles are observed through a transparent observation opening 9 formed in one side, adjacent to the driving unit 5, of the protective cover 2, and whether the aluminum profiles are cut The cutting piece 10 is aligned, after the aluminum profile and the cutting piece 10 are aligned, the moving plate 34 is released, under the action of self gravity, the moving plate 34 moves downwards and abuts against the aluminum profile, the electric piston rod 6 is electrified, the electric piston rod 6 is shortened, the electric piston rod 6 drives the output end of the third hydraulic cylinder 52 to be far away from the third hydraulic cylinder 52, and tensile force is exerted on the U-shaped strip 51, the U-shaped strip 51 drives the moving plate 32 to slide in the fixed plate 31, the moving plate 32 slides into the fixed plate 31, the fixed plate 31 abuts against the aluminum profile, the aluminum profile is tightly attached to the inner wall of the feeding groove 33, the feeding groove 33 is blocked, the protective cover 2 is a relatively closed space, noise is prevented from being transmitted, one end of the sealing unit 3 is provided with a driving unit 5 for driving the sealing protective cover 2 by the sealing unit 3 and a limiting unit 4 for locking the driving unit 5, make the movable plate 32 slide in the fixed plate 31 through the drive unit 5, and when fixing the aluminium alloy, plug up the feed chute 33, simultaneously through the locking of second locking unit 16, avoid the movable plate 32 to move back, fix the position of fixed plate 31 through first locking unit 8 simultaneously, when the movable plate 32 slides to the fixed plate 31, the movable plate 32 can promote fixed plate 31 has the trend of keeping away from the motion of drive unit 5, and can make fixed plate 31 fix through first skewed tooth 81 and first inserted block 82, make the movable plate 32 can tightly press on the aluminium alloy.

As shown in fig. 2 to 4, before use, the fixed plate 31 is moved by fixing the position of the fixed plate 31 by the first locking unit 8, so that the fixed plate 31 slides on the guide rail 7, when the fixed plate 31 moves towards the driving unit 5, the first insert 82 moves downwards on the inclined surface of the first inclined tooth 81 during the stroke of the first insert 82, and under the action of the first spring 84, the first insert 82 moves upwards to be engaged with the first inclined tooth 81 again, and the cutting depth becomes shallower during the movement of the fixed plate 31 towards the driving unit 5. If the cutting depth is larger, the first insert 82 can be separated from the first helical teeth 81 by the first hydraulic cylinder 85 in the first fixing box 83 and disengaged from the first helical teeth 81, and at this time, the fixing plate 31 can be moved away from the driving unit 5, and the cutting depth is increased as the fixing plate 31 is separated from the driving unit 5.

As shown in fig. 2, 3 and 5, according to the cutting depth of the aluminum profile, the fixed plate 31 is moved, the electric piston rod 6 is energized, and the electric piston rod 6 is extended, so that the electric piston rod 6 pushes the output end of the third hydraulic cylinder 52 to move towards the third hydraulic cylinder 52 and apply a pushing force on the hydraulic oil, at this time, the hydraulic oil is delivered into the second hydraulic cylinder 12 additionally installed in the second fixed box 161 through the oil supply pipe 53, the L-shaped insert 13 is away from the driven plate 41, so that the L-shaped insert 13 and the second helical teeth 42 are in a contact engagement relationship, the second spring 14 is compressed, the electric piston rod 6 is extended continuously, and the third hydraulic cylinder 52 drives the U-shaped strip 51 to be away from the single-end saw, so that the U-shaped strip 51 drives the movable plate 32 to slide in the fixed plate 31, and the movable plate 32 to slide out of the fixed plate 31.

As shown in fig. 2 and 3, a vertical pulling force is applied to the moving plate 34, the moving plate 34 releases the sealing of the feeding chute 33, so that the feeding chute 33 is completely leaked, the aluminum profile enters the protective cover 2 from the feeding chute 33 and is placed on the bearing plate 11, and whether the aluminum profile is aligned with the cutting member 10 or not is observed through a transparent observation port 9 formed in one side of the protective cover 2 adjacent to the driving unit 5.

As shown in fig. 3 and 5, after the aluminum profile is aligned with the cutting element 10, the moving plate 34 is released, under the action of its own gravity, the moving plate 34 moves downward and abuts against the aluminum profile, the electric piston rod 6 is energized, and the electric piston rod 6 is shortened, so that the electric piston rod 6 drives the output end of the third hydraulic cylinder 52 to be away from the third hydraulic cylinder 52, and exerts a pulling force on the U-shaped strip 51, so that the U-shaped strip 51 drives the moving plate 32 to slide in the fixed plate 31, and the moving plate 32 slides into the fixed plate 31, during the stroke of one oblique tooth of the second oblique tooth 42, the L-shaped insert 13 moves to the driven plate 41 under the action of the second spring 14, and again engages with the second oblique tooth 42, the fixed plate 31 abuts against the aluminum profile, so that the aluminum profile is tightly attached to the inner wall of the feeding chute 33, so that the feeding chute 33 is blocked and the inside of the protection cover 2 is a relatively closed space to prevent noise from being transmitted.

As shown in fig. 3, a polyurethane sound insulating plate 22 is attached to the inner side of the sheet iron cover 21, a porous calcium silicate sound absorbing plate 23 is attached to the inner side of the polyurethane sound insulating plate 22, and the polyurethane sound insulating plate 22 and the porous calcium silicate sound absorbing plate 23 are partitioned by a bracket and have a hollow space therebetween. Polyurethane acoustic celotex board 22 and porous calcium silicate abatvoix 23 are good sound insulation material, and form porous, loose sealed soundproof room, have better noise reduction to the noise of low frequency high decibel, production operational environment has greatly been improved, install the aluminium bits simultaneously and retrieve box 15 additional on workstation 1, the box 15 is retrieved to the aluminium bits is located protection casing 2 under, produced aluminium bits during work production, the dust enters into the aluminium bits by the passageway of protection casing 2 rear side and retrieves box 15 in, the injury that the aluminium bits splashed and produce the human body has been solved.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims

1. The utility model provides a dust keeper of making an uproar falls in single-end saw cutting, includes workstation (1) and installs additional single-end saw on workstation (1), single-end saw is including cutting piece (10) and being located loading board (11) under cutting piece (10), its characterized in that: still including set up in the single-end saw outside just is used for noise absorption's protection casing (2), two outsides that protection casing (2) are relative all are provided with sealing unit (3) that are used for fixed aluminium alloy, the one end of sealing unit (3) is provided with and is used for driving about sealing unit (3) are sealed drive unit (5) of protection casing (2) and are used for the locking spacing unit (4) of drive unit (5).

2. The single-head saw cutting noise-reducing and dust-preventing device according to claim 1, wherein: sealing unit (3) are including fixed plate (31), fly leaf (32) and movable plate (34), fixed plate (31) through set up in guide rail (7) sliding connection of workstation (1) lateral wall in on the lateral wall of workstation (1), fly leaf (32) along horizontal direction sliding connection in fixed plate (31), feed chute (33) have been seted up on fixed plate (31), feed chute (33) pass through the pay-off mouth of seting up on protection casing (2) with protection casing (2) are inside to be linked together, movable plate (34) along vertical direction sliding connection in feed chute (33), and run through the top of fixed plate (31), seted up in movable plate (34) with the draw-in groove that fly leaf (32) shut.

3. The single-head saw cutting noise-reducing and dust-preventing device according to claim 2, wherein: the limiting unit (4) comprises a driven plate (41) and second inclined teeth (42), the driven plate (41) is fixedly mounted on the opposite side surfaces of the two fixed plates (31), and the second inclined teeth (42) are fixedly mounted on the adjacent side surfaces of the two driven plates (41).

4. The single-head saw cutting noise-reducing and dust-preventing device according to claim 3, wherein: drive unit (5) include U shaped strip (51), third pneumatic cylinder (52) and supply oil pipe (53), two supports of U shaped strip (51) respectively fixed mounting in two fly leaf (32) carry on the back mutually the one end of fixed plate (31), third pneumatic cylinder (52) fixed mounting in the inboard of U shaped strip (51), two outputs of third pneumatic cylinder (52) all add and are equipped with supply oil pipe (53).

5. The single-head saw cutting noise-reducing and dust-preventing device according to claim 4, wherein: the protection casing (2) include leather clothing cover (21), polyurethane acoustic celotex board (22) and porous calcium silicate abatvoix (23), leather clothing cover (21) are located the outside of single-end saw, and install additional in on workstation (1), polyurethane acoustic celotex board (22) install additional the inboard of leather clothing cover (21), porous calcium silicate acoustic celotex board (23) install additional the inboard of polyurethane acoustic celotex board (22), polyurethane acoustic celotex board (22) with form the cavity between porous calcium silicate acoustic celotex board (23).

6. The single-head saw cutting noise-reducing and dust-preventing device according to claim 4, wherein: still include second locking unit (16), second locking unit (16) include the fixed box of second (161), second hydraulic cylinder (12), L type inserted block (13) and second spring (14), the fixed box of second (161) fixed mounting in fly leaf (32) carries on the back the side of driven plate (41), second hydraulic cylinder (12) fixed mounting in on the inner wall of the fixed box of second (161), the other end of fuel feeding pipe (53) install additional on second hydraulic cylinder (12), the one end of L type inserted block (13) install additional in second hydraulic cylinder (12), the other end with second skewed tooth (42) mesh mutually, L type inserted block (13) with install second spring (14) additional between the fixed box of second (161).

7. The single-head saw cutting noise-reducing and dust-preventing device according to claim 5, wherein: the locking device further comprises a first locking unit (8), wherein the first locking unit (8) comprises a first helical tooth (81), a first insert block (82), a first fixed box (83), a first spring (84) and a first hydraulic cylinder (85), the first fixing box (83) is fixedly arranged on the outer side wall of the iron sheet cover (21), a first hydraulic cylinder (85) is additionally arranged in the first fixing box (83), a first insert block (82) is additionally arranged at the output end of the first hydraulic cylinder (85), a guide groove is formed in the bottom of the fixing plate (31), and a first helical tooth (81) is fixedly arranged in the guide groove, one end of the first insert block (82) positioned in the guide groove is meshed with the first helical tooth (81), a first spring (84) is fixedly arranged on the outer wall of one end of the first plug block (82) positioned in the first fixing box (83), the other end of the first spring (84) is fixedly arranged on the first hydraulic cylinder (85).

8. The single-head saw cutting noise-reducing and dust-preventing device according to claim 5, wherein: an electric piston rod (6) is fixedly mounted on the outer wall of the iron sheet cover (21), and the output end of the electric piston rod (6) is additionally arranged at the input end of the third hydraulic cylinder (52).