636 results about "Wire saw" patented technology

The invention relates to the technical field of real-time inhibition of wafer cutting cracks, in particular to a real-time inhibition method and system for wafer cutting cracks based on multi-modal sensing, the system is provided with an acoustic emission sensor and a thermal infrared imager in a cutting area for collecting acoustic emission signals and temperature signals in the cutting process, and the real-time inhibition of the wafer cutting cracks based on the multi-modal sensing is realized by processing the signals. Extracting an acoustic emission characteristic curve and a temperature change value; the characteristics are utilized to construct a two-way long-short-term memory neural network model, the crack risk in the wafer cutting process is predicted, and according to the predicted crack risk, the system adaptively adjusts cutting parameters, such as the cutting speed and the fretsaw tension, so that real-time inhibition of cracks is realized. According to the method, through multi-modal sensing fusion, more comprehensive cutting state perception is provided, early symptoms of crack formation can be captured, and a reliable basis is provided for accurate prediction of crack risks.

The application relates to the technical field of stone cutting equipment, in particular to high-efficiency stone wire saw cutting equipment, which is characterized by comprising a mounting frame, a lifting frame, a lifting driving mechanism, a stone clamping and placing mechanism and a wire saw cutting mechanism, the lifting frame is arranged in the mounting frame and is slidably connected to the mounting frame through a first sliding assembly, the lifting driving mechanism is arranged on the mounting frame and is used for driving the lifting frame to lift, the stone clamping and placing mechanism is arranged below the lifting frame and is used for clamping and placing a stone body, and the wire saw cutting mechanism is arranged on the lifting frame. The application can effectively reduce the wire breaking probability of the cutting wire, the threading overhauling after wire breaking is relatively convenient, and the consistency of the tension among the multiple cutting wires can be effectively ensured.

The wire cutting assembly comprises a bottom frame, a cutting frame, rollers, a take-up and pay-off assembly, a tensioning assembly and a lifting frame, the cutting frame is arranged at the upper end of the bottom frame, the lifting frame is arranged under the cutting frame through a lifting device, the rollers are symmetrically arranged on the cutting frame, and the tensioning assembly is arranged on the lifting frame. The take-up and pay-off assembly comprises a pay-off device and a take-up device, at least two cutting lines are wound on the roller at intervals corresponding to the take-up and pay-off assembly, the pay-off device and the take-up device are arranged on the cutting frame corresponding to the two ends of the cutting lines, and one take-up and pay-off assembly correspondingly controls take-up and pay-off of one cutting line. The tensioning assembly is arranged on the cutting frame corresponding to the pay-off device and the take-up device. Through the arrangement of the multiple pay-off devices and the multiple take-up devices, simultaneous work of multiple cutting lines is achieved, the speed and tension of each cutting line can be independently controlled, and the problem that tension is possibly uneven when multiple cutting lines are driven by a traditional single motor is solved.

The invention relates to a diamond wire saw sanding additive and a preparation method and application thereof, the diamond wire saw sanding additive is a polymer with the weight-average molecular weight (Mw) of 1000-7000, and the diamond wire saw sanding additive is shown as a structural formula (I) or a structural formula (II), in the formula I, R1 and R2 are-CH3,-CH2CH3,-CH2CH2CH3 and-CH2CH2CH2CH3 respectively, and n and m are independently 2-30; in the formula II, R3 is H,-CH3,-CH2CH3,-CH2CH2CH3 or-CH2CH2CH2CH3, and z is 1 or 2. In the sanding process of the carborundum activated by the additive, the production speed of a fretsaw can be remarkably increased under the condition that the product quality requirements that the cutting rate is 120-150 grains / mm, the height is larger than 3.8 microns, the breaking force is larger than 5.5 N and the stacking diameter is smaller than 12 microns can be met. And the speed can be increased from 30m / min without addition of the additive to 60m / min or above at most, so that the production efficiency is obviously improved.

The invention relates to the technical field of iron engineering, and provides a rapid mechanical excavation device and method suitable for hard rock tunnel engineering, the section of a tunnel is divided into an upper step area and a lower step area, and the upper step area and the lower step area are subdivided into three construction ranges A, B and C. The zone A adopts a diamond wire saw hydraulic drilling and cutting all-in-one machine to cut rocks; a crawler-type annular drilling machine is used for drilling in the area B, and then a hydraulic splitting rod is used for splitting a rock stratum; and the area C adopts a mine vertical disk saw and a horizontal disk saw for cutting, and then an excavator is used for crushing. The technology is suitable for hard rock strata, mechanical equipment is miniaturized, large vibration is avoided in the construction process, the influence on adjacent railways is small, and the working efficiency is high. And in the implementation case that the water conservancy tunnel passes through the combined high-speed rail roadbed, the construction influence is effectively reduced, and the construction speed is increased.

The invention provides a universal cutting assembly for a fretsaw and a wire saw and a fretsaw machine using the universal cutting assembly. The universal cutting assembly comprises a cutting assembly body, a mounting frame, a lifting frame and a lifting device. The cutting frame is arranged at the upper end of the bottom frame, the lifting frame is arranged under the cutting frame through a lifting device and can be close to the cutting frame through the lifting device, and the cutting assembly comprises the cutting frame, a fixed roller frame, a movable roller frame, a take-up and pay-off assembly, a sliding assembly and a driving assembly. The fixed roller frame and the movable roller frame are correspondingly arranged on the cutting frame, the driving assembly and the sliding assembly are matched to control the movable roller frame to move in the horizontal axial direction of the movable roller frame, and the roller drums are correspondingly arranged on the fixed roller frame and the movable roller frame through quick release devices. By means of the roller drum capable of being rapidly detached and replaced, the drum of the fret saw and the drum of the rope saw are rapidly switched, so that the same equipment can be flexibly switched to use the fret saw or the rope saw, and the equipment purchase and maintenance cost is reduced.

The utility model belongs to the technical field of cutting equipment, particularly relates to a hydraulic rope saw, and aims to solve the problems that an existing traditional hydraulic rope saw system runs for a long time at a high load, oil temperature rises easily, oil quality and system stability are affected, cutting efficiency and quality are reduced, the service life of equipment is shortened, oil is not fully filtered, and the equipment is easily damaged by impurities. According to the technical scheme, the hydraulic wire sawing machine comprises a wire saw valve group which is fixed to the top of an oil tank and matched with a motor pump to control conveying of hydraulic oil to a wire saw, and a cooling assembly which is used for cooling and filtering the used hydraulic oil. Meanwhile, monitoring elements such as a shock-proof pressure gauge and the like and an oil return filter are arranged, so that the real-time state monitoring and the oil cleanliness of the system are ensured, the service life of equipment is prolonged, and the stability and the reliability of the system are integrally enhanced.

The utility model relates to the technical field of wire cutting machines, and discloses a guide wheel anti-falling structure which comprises a base, a supporting frame is fixedly installed at the front end of the base, the supporting frame is connected with a first fixing plate and a second fixing plate through a limiting cylinder, and the inner side of the first fixing plate and the inner side of the second fixing plate are each provided with a wire saw guide wheel. An anti-falling device is arranged on the surface of the rope saw guide wheel and comprises an anti-falling clamp, a fixing column and a positioning frame, pull rods on the two sides are pulled firstly, then telescopic springs are stressed and contracted, positioning holes in clamping pieces on the two sides of the anti-falling clamp are aligned with the fixing column, then the pull rods are loosened, the telescopic springs can drive the pull rods to stretch out, and the anti-falling device is arranged on the surface of the rope saw guide wheel. The two clamping pieces are arranged on the fixing shaft and clamped and fixed with the inserting holes, the first threaded holes in the two ends of the two clamping pieces are accurately aligned with the threaded holes of the fixing shaft, then fixing is conducted through the locking bolts, the device is extremely convenient to install and detach, and the stability is greatly improved by adopting a double-fixing mode.

The utility model provides an anti-slip diamond brazing bead string and a wire saw, which comprise a bead string base body and an abrasive particle layer fixed on the outer surface of the bead string base body, and are characterized in that the outer surface of the bead string base body is provided with a spiral groove along the circumferential direction; the abrasive particle layer is arranged in the spiral groove and comprises brazing filler metal and diamond, and the diamond is connected into the spiral groove through the brazing filler metal; by the adoption of the technical scheme, the situation that the brazing material forms a liquid state in the brazing process and then drives the diamonds to slide is prevented, the diamonds are evenly distributed in the spiral groove, the diamond utilization rate in the grinding process is increased, and then the grinding efficiency is improved; and the spiral grooves are beneficial to chip removal during grinding of the diamond brazing bead string, and the situation that cuttings adhere to the surface of the diamond, and the grinding capacity is affected is prevented.

The utility model relates to the technical field of diamond beaded wire saws, in particular to a diamond beaded wire saw rope tension automatic adjusting device which comprises an n-shaped mounting seat, first adjusting mechanisms are symmetrically arranged at the positions, close to the left side and the right side, of the top of the n-shaped mounting seat, each first adjusting mechanism comprises an air cylinder, and the end of a piston rod of each air cylinder is connected with an n-shaped moving frame. An auxiliary wheel is rotatably connected to the rear side surface of the inner wall of the n-shaped moving frame through a bearing, a mounting plate is fixedly welded to the end, away from the driving wheel, of the n-shaped moving frame, a graduated scale is fixedly connected to the top of the mounting plate through a bolt, and the top end of the graduated scale penetrates through the top of the n-shaped mounting base and is slidably connected with the n-shaped mounting base; and the first scale grooves are uniformly arranged at equal intervals. According to the automatic rope tensioning force adjusting device for the diamond beaded rope saw, by arranging the first adjusting mechanism and the second adjusting mechanism, the device can conveniently adjust the rope tensioning force of the diamond beaded rope.

The invention provides a universal roller for a wire saw and a wire saw and a cutting assembly using the roller, the universal roller for the wire saw and the wire saw comprises a universal roller for the wire saw and the wire saw, a cutting frame, a roller frame, a take-up and pay-off device and an adjusting device, the universal roller for the wire saw and the wire saw comprises a roller shaft, a wire groove for winding the wire saw and a wire groove for winding the wire saw, the wire groove and the rope groove are formed in the outer circumferential face of the roller shaft at intervals, the roller frame comprises a fixed roller frame and a movable roller frame, the fixed roller frame is arranged at one end of the cutting frame, and the movable roller frame is arranged at the other end of the cutting frame through an adjusting device. The movable roller frame is arranged on the fixed roller frame, the distance between the movable roller frame and the fixed roller frame can be adjusted through the adjusting device, the roller is arranged on the roller frame and is in transmission connection with the driving device, and the take-up and pay-off device is arranged on the roller frame and can take up and pay off the fret saw. The saw grooves are formed in the outer circumferential surface of the roller shaft in a surrounding and spaced mode, so that a single roller is matched with a fret saw and a rope saw.

The invention belongs to the technical field of graphite strip machining, and discloses a graphite strip cutting fret saw which comprises a base, a supporting seat is fixed to the bottom end of the base, a conveying plate is fixed to the top end of the base, a limiting mechanism is installed in a recycling plate, and a guide mechanism is fixed to the top end of the recycling plate. According to the device, the graphite strip can be placed at the top end of the conveying plate and pushed to the position of a cutting line, after the cutting end of the graphite strip is determined, the clamping plate is pressed downwards, the clamping plate is located at the top end of the graphite strip, the to-be-cut graphite strip is fixed through the clamping plate by rotating the nut, and therefore the fixing stability is guaranteed; when a cutting line is used for cutting a graphite strip, an electric motor is synchronously started to drive dust collection fan blades to rotate to collect generated graphite powder, and therefore the purposes that the device can conveniently fix the graphite strip, recover the generated graphite powder and cool the graphite strip are achieved.

The utility model discloses unmanned underwater pile foundation automatic cutting equipment, which comprises a truss main body, a pneumatic pile holding system and a diamond wire saw cutting system, and is characterized in that the underwater pile foundation automatic cutting equipment is hoisted above a pile foundation to be subjected to pile cutting through hoisting equipment; after the direction and the position are adjusted, the hoisting equipment loosens a hook, and the underwater pile foundation automatic cutting equipment sinks to the specified elevation; the air compressor is started, so that the pneumatic pile holding device clamps the pile foundation; a hydraulic diamond wire saw cutting system power supply is started to cut the pile foundation; and after cutting is completed, hoisting equipment is used for hoisting the pile foundation and the underwater pile foundation automatic cutting equipment to a designated position together. According to the utility model, divers do not need to operate underwater, so that the potential safety hazard of underwater operation of the divers is fundamentally eliminated; pile foundation notches are neat, no concrete fragments exist, the cutting quality is high, and follow-up piling construction is not affected; the device is not influenced by tide, water flow and water depth and is wide in application range.

The invention provides a fret saw capable of adjusting roller distance, which comprises a base, a lifting mechanism and an adjusting mechanism are arranged on the base, the lifting mechanism comprises a movable lifting bracket, the adjusting mechanism comprises a rectangular frame, a fixed roller frame and a movable roller frame, and the rectangular frame is provided with a horizontal slide rail, a rack and a positioning hole. The two sides of the fixed roller frame and the two sides of the movable roller frame respectively protrude to form shoulders, sliding blocks are installed on the shoulders, the movable roller frame is provided with a driving gear, and the back of the fixed roller frame and the back of the movable roller frame are provided with a take-up and pay-off wheel and a tensioning wheel. The fixed roller frame and the movable roller frame are supported on the horizontal sliding rails through the shoulders protruding on the two sides, can bear large weight and are not prone to deformation. Secondly, a take-up and pay-off wheel is installed behind the fixed roller frame and the movable roller frame to achieve take-up and pay-off of the diamond wire on the roller frames, a tensioning wheel plays a role in automatically tensioning the diamond wire, and the cutting precision of the diamond wire is improved; finally, the stone is moved through the lifting bracket to be matched with the diamond wire to achieve automatic cutting.

The invention provides a diamond wire saw steel ball detection method based on improved yov8. The diamond wire saw steel ball detection method comprises the following steps: S1, acquiring an original image of a diamond wire saw bead; labImage label images are used for marking beads, and data of a training set, a verification set and a test set are formed according to the proportion; s2, carrying out the preprocessing of the image, carrying out the zooming of the image, and carrying out the preprocessing of the image through employing an improved Retinex algorithm; s3, the yov8 model is improved, and an illumination invariant feature extractor (LIF) is added into the backbone; a CA attention mechanism is integrated in a C2f module, and a small target detection head is added and a large-scale detection head is deleted based on small bead size change, so that the small target detection head is used for detecting a bead small target; and S4, optimizing a loss function of the yolov8, improving the small target detection precision by using an improved IoU loss function, and training by using an improved yolov8 model to obtain a training result best.pt file.

The invention discloses a slope surface rope saw cutting method for rock slope excavation. The method comprises the following steps that a row of drill holes are formed along a slope excavation opening line; each drill hole is drilled to a designed layered elevation; the in-hole guide devices with the wire saws penetrating through are sequentially placed at the bottoms of the adjacent guide holes, the directions of rod bottom guide wheels of the in-hole guide devices are adjusted to be consistent with the cutting face, and then the in-hole guide devices are fixed; a rope saw for leading two holes at the head and the tail of one cutting unit out of a drilled hole bypasses a guide wheel outside the hole and is connected with a rope saw host to form a loop; and S7, the initial position of the rope saw main machine is adjusted, the rope saw is tensioned, and the rope saw main machine is started to start cutting after safety is checked and confirmed. According to the slope surface rope saw cutting method for rock slope excavation, rope saw cutting is applied to the rock slope opening line (boundary line), and accuracy and stability are achieved.

A vertical shaft excavation system adopting a wire saw method solves the problems that a vertical shaft excavation system is low in construction efficiency, large in investment, high in cost and long in construction period, a first guide hole and a second guide hole are formed in the upper end and the lower end of a vertical shaft, upper and lower annular beams and upper and lower wire saw machines are installed on the first guide hole and the second guide hole respectively, and upper and lower annular rails are installed on the upper and lower annular beams respectively; the upper cross beam stretches across an upper annular rail at the upper end of the vertical shaft, the lower cross beam stretches across a lower annular rail at the lower end of the vertical shaft, the lateral walking trolley and the forward walking trolley are QSC three-in-one motor-driven rigid wheels, the first upper rope sawing machine, the second upper rope sawing machine, the first lower rope sawing machine and the second lower rope sawing machine are respectively provided with a first driving wheel, a second driving wheel, a third driving wheel and a fourth driving wheel, and the first driving wheel and the fourth driving wheel are respectively located at the upper end and the lower end of a first guide hole. The second driving wheel and the third driving wheel are located at the upper end and the lower end of the second guide hole respectively, and the first-fourth driving wheels and the rope saw chain wind around the first-fourth driving wheels, the upper guide pulley and the lower guide pulley to form a closed loop.

The invention provides waste fan blade cutting equipment which comprises a rope saw cutting system, and the rope saw cutting system comprises a feeding device used for controlling the feeding amount, speed and path of a rope saw; the tensioning device is used for adjusting the tension of the wire saw; the driving device is used for driving the rope saw to rotate; the rope saw bypasses the feeding device, the driving device and the tensioning device to form a closed loop; wherein the feeding device is provided with a rotating mechanism, a guide wheel set is arranged on the rotating mechanism, and the guide wheel set is used for changing the path of the rope saw. Through modular design, intelligent control and environmental protection technology integration, efficient and green treatment of the waste fan blades is achieved, and a complete solution is provided for sustainable operation of the wind power industry.

The invention relates to the technical field of fretsaw cutting, in particular to a cutting fretsaw for aluminum profile machining, which comprises a fretsaw frame and a fretsaw wire, and the fretsaw frame is connected with the fretsaw wire to drive the fretsaw wire to axially move; a supporting beam is horizontally and fixedly connected to one side of the fretsaw rack, a workbench used for bearing a workpiece is fixedly connected to the supporting beam, and a notch is formed in the workbench and used for allowing a fretsaw wire to pass through. According to the cutting fretsaw for aluminum profile machining, when a workpiece is cut, the connecting piece slides on the vertical plate to drive the two mounting plates to clamp the workpiece, in the process that the workpiece is cut through the fretsaw wire, radial supporting force is applied to the fretsaw wire through the two pinch rollers arranged on the mounting plates, and the workpiece is cut through the fretsaw wire. Therefore, the bending degree of the fretsaw wire in the cutting process is reduced, the fretsaw wire is kept in a linear state as much as possible, extra allowance generated in the squaring process of an aluminum profile workpiece is reduced, and the production cost is reduced.

The utility model provides a rope saw cutting all-in-one machine, including equipment main part and cutting power portion, equipment main part includes bottom plate and drive the walking mechanism of bottom plate movement, cutting power portion includes frame body, fixed on the frame body drive assembly and set up the locking assembly at the frame body bottom, and the locking assembly is fixed on the frame body. A fixing plate is fixedly arranged on the bottom plate, the driving assembly is detachably connected with the fixing plate through the locking assembly, and a moving assembly used for driving the driving assembly to move in the length direction of the fixing plate is arranged on the lower portion of the driving assembly. According to the cutting device, by arranging the locking assembly, the cutting power part and the device body can be rapidly mounted or dismounted, the working efficiency is improved, and by arranging the pulling plate, the positioning rod, the fixing ring and the first spring and being matched with the cover body, the second guide wheel can be conveniently unlocked while being conveniently locked.

The invention relates to the technical field of stone, in particular to a graphite inclined angle cutting device which comprises a shell, two fixing plates are fixedly connected to the upper surface of the shell, two pin holes are fixedly connected to the upper surface of the shell, a wire changing device is arranged in the fixing plate on the left side, and a wire saw device is arranged on the front side wall of the fixing plate. The surface of the shell is rotationally connected with a carrying table, a dust suction device is arranged in the shell, and an angle adjusting device is arranged in the shell. According to the automatic feeding device, by arranging a sensor, when the sensor receives pressure, a signal can be transmitted to a feeding motor, and when the feeding motor receives an electric signal, after preset time is up, the feeding motor is driven to rotate; the feeding motor can drive the gear to rotate, so that the rack is pushed to move under the constraint of the sliding rail, then the feeding supporting rod and the feeding plate are pushed to move towards the fret saw, automatic feeding is achieved, the safety coefficient in the feeding process is increased, and meanwhile manpower is saved.

The invention relates to a method for separating a plurality of semiconductor material wafers from workpieces during a number of wafer separation operations for an associated workpiece separation process per workpiece by means of a wire saw comprising a wire gate of moving wire sections of a saw wire stretched between two wire guide rollers, wherein each of the wire guide rollers is mounted between a fixed bearing and a floating bearing, comprising the step of carrying out the wafer separation operations of the current workpiece separation process on the current workpiece by temperature-controlling the fixed bearing of the respective wire guide roller during the current workpiece separation process according to a previously determined WGTC temperature curve within the method, which was determined on the basis of a weighted determination of historical data from past workpiece separation processes.wherein, in each of the disc cutting operations, sawing is carried out in a cutting area of ​​the workpiece at a substantially constant cutting speed within the range of 2000 µm / min to 3000 µm / min. The invention further relates to a disc made of semiconductor material, which is produced in particular by the sawing method according to the invention, wherein the disc has a TTV value in the range of 6.0 µm to 58.5 µm, preferably in the range of 10.8 µm to 30.5 µm, and more preferably in the range of 12.9 µm to 25.6 µm.

The present invention relates to the field of stone processing technology, and in particular to a wire saw machine capable of automatically unloading plates, the wire saw machine comprising a frame, a wire saw device and a transfer device. The feed port and the discharge port of the frame form a continuous material channel, and the frame has a built-in placement plate for carrying rough materials and a support frame for carrying plates. The wire saw device achieves precise feeding of the steel wire through the movement of the moving frame, and the linkage wheel rotation ensures efficient linear cutting of the rough materials. The transfer device coordinates the control of the suction cup through the truss, lifting frame and crossbeam to complete the adsorption, transfer and release actions. The overall workflow starts with the positioning of the rough material, and is completed by the steel wire height positioning, the suction cup adsorbing the surface to be cut, the steel wire horizontally sawing and separating the plates, the truss carrying the plates inward, the suction cup flipping the plates downward and accurately stacking them, and finally the steel wire is horizontally fed to the next saw seam and cyclic operation, realizing efficient production of the entire process from separation of plates from rough materials to automatic stacking, while ensuring the integrity of the plates and achieving efficient and continuous production.

The application discloses a wiring method of a diamond wire saw, which comprises the following steps: determining a cutting tension N and a wire diameter D of a diamond wire T according to parameters of a main roller; selecting a coarse-diameter diamond wire T1 according to the wire diameter D of the diamond wire T and fixing the coarse-diameter diamond wire T1 on a main shaft of a take-up wheel; fixing a wire end of the coarse-diameter diamond wire T1 on a rear end of the main roller; starting the main roller to run the wire according to a wire running tension, forming a first local dense wire net; removing the diamond wire that does not fall into a wire groove of the main roller to form a second local dense wire net and fixing the second local dense wire net; continuing to start the main roller to rotate, forming a large-range dense wire net, and pulling out the wire end of the coarse-diameter diamond wire T1 and fixing the wire end of the coarse-diameter diamond wire T1 on a main shaft of a pay-off wheel; after a heat engine is completed, connecting the wire end of the diamond wire T with the wire end of the coarse-diameter diamond wire T1 at a pay-off end, starting the main roller to rotate, running the diamond wire T to the take-up wheel at the cutting tension N, fixing the diamond wire T on the main shaft of the take-up wheel, starting the heat engine, and completing wiring. The application improves the production efficiency and quality of silicon wafers.

The application provides a multi-wire cutting device and relates to the technical field of stone processing devices. The device comprises a rack and a workbench. The rack is provided with a cutting mechanism and an adjusting mechanism. The cutting mechanism comprises a first main guide wheel and a second main guide wheel. The first main guide wheel and the second main guide wheel are provided with grooves. A plurality of cutting wires are wound around the first main guide wheel and the second main guide wheel to form a cutting wire net on the upper and lower sides. The first wire pressing wheel and the second wire pressing wheel are respectively provided with a plurality of roller wheels. Each roller wheel is provided with a wire groove parallel to the groove. The wire groove and the groove are arranged alternately. The first wire pressing wheel and the second wire pressing wheel are arranged above the cutting wires to press the cutting wire net formed on the upper side of the first main guide wheel and the second main guide wheel to be coplanar with the cutting wire net formed on the lower side and arranged alternately. The application can improve the cutting efficiency and the cutting quality.

The utility model relates to the technical field of jigsaw machines, in particular to a wire inlet and outlet adjusting device of a stone jigsaw machine, which comprises a rack, a jigsaw bench is arranged at the top of the rack, a jigsaw machine shell is arranged at the top of the rack and positioned on one side of the jigsaw bench, and transmission belt wheels are rotatably connected in the jigsaw machine shell in a vertically symmetrical manner. According to the wire sawing machine, the two sets of fixing supporting plates are additionally arranged at the position of a cutting notch, the fixing outer sleeves and the adjusting inner sleeves are arranged on the fixing supporting plates, the gears are driven by the positive and negative motors to rotate, the cutting wires are driven to rotate, and the cutting wires are driven to rotate. And therefore, the adjusting inner sleeve is driven to extend out of the fixed outer sleeve, the guide pulleys abut against the outer side of the cutting line, the positions of the incoming line and the outgoing line can be adjusted through the two sets of guide pulleys which are distributed in a staggered mode, the adjusting precision is greatly improved, and cutting and sawing of rough stone blocks are better facilitated.

The utility model relates to the technical field of garden pruning, in particular to an urban environmental sanitation greening garden saw which comprises a handle, a connecting block and a multifunctional fret saw assembly, the multifunctional fret saw assembly comprises a fret saw, a saw blade, a storage box and an auxiliary handle, the connecting block is fixedly connected with the handle and located on one side of the handle, and the fret saw is fixedly connected with the connecting block and located on the other side of the handle. The storage box is detachably connected with the fret saw and located at the end, away from the connecting block, of the fret saw, the saw blade is fixedly connected with the fret saw and located on the outer surface of the fret saw, and the auxiliary handle is fixedly connected with the storage box and located at the end, away from the fret saw, of the storage box. According to the multifunctional garden saw, an original knife saw structure is modified and replaced with the multifunctional fret saw assembly, so that the starting difficulty is reduced, and the problems that a traditional garden saw has certain starting difficulty and is low in practicability are effectively solved.

This invention discloses a method for connecting a new pipeline to an old pipeline during pipeline relocation without interrupting flow. The method includes the following steps: S1, excavating a working well, with the connection point between the new and old pipelines located within the working well, and jacking the new pipeline into the working well using a pipe jacking method; S2, constructing an inspection well within the working well; S3, providing a cutting rope and a wire saw, placing the wire saw on the ground, wrapping the cutting rope around the section of the old pipeline to be cut, and operating the wire saw from the ground to cut the old pipeline; S4, sealing the abandoned section. This invention, by using a wire saw for cutting, allows construction personnel to operate the wire saw from the ground to cut the old pipeline within the inspection well, eliminating the need for a dry working environment within the inspection well, thus avoiding the need for sealing and preventing problems such as sewage backflow and waterlogging caused by prolonged sealing.

1. Name of the designed product: wire cutting machine (swing type) 2. Use of the designed product: for wire cutting machine 3. Design points of the designed product: combination of shape and pattern 4. Picture or photo best showing the design points: perspective view 1

The application discloses a workpiece linear cutting efficiency improving device, which comprises a base plate and a dividing disc, the dividing disc is connected with the base plate, the base plate is provided with a through hole and a tool setting groove at the edge, the dividing disc is provided with a main dividing hole corresponding to the position of the through hole, the dividing disc is provided with a plurality of auxiliary dividing holes taking the main dividing hole as a reference, the position relationship between the main dividing hole and the auxiliary dividing hole corresponds to a plurality of cutting positions of the workpiece; when the main dividing hole coincides with the through hole, the dividing disc is provided with a main escape groove at the corresponding position of the tool setting groove; the dividing disc is further provided with a plurality of auxiliary escape grooves, each auxiliary escape groove corresponds to an auxiliary dividing hole, and the included angle between each auxiliary escape groove and the corresponding auxiliary dividing hole is equal to the included angle between the main dividing hole and the main escape groove; the dividing disc is provided with a positioning disc, the positioning disc is provided with a stop opening for placing the workpiece, and the positioning disc is provided with a pressing plate; the positioning disc and the pressing plate are both circumferentially provided with escape grooves with the same positions as the main escape groove and the auxiliary escape groove of the dividing disc; the dividing disc, the positioning disc and the pressing plate are correspondingly provided with at least two connecting holes, guide columns are arranged in the connecting holes to fix the positions of the three.