CN112829012B

CN112829012B - Gasoline saw with anti-cutting chain

Info

Publication number: CN112829012B
Application number: CN202110224109.3A
Authority: CN
Inventors: 周帅
Original assignee: 永康市南天工贸有限公司
Current assignee: Yongkang Nantian Industry And Trade Co ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2022-04-19
Anticipated expiration: 2041-03-01
Also published as: CN112829012A

Abstract

The invention discloses a gasoline saw with a cutting-proof chain, which comprises a gasoline engine, wherein the top of the gasoline engine is provided with a notch, a heat dissipation plate is arranged at the notch of the gasoline engine, a lifting handle and a protection plate are fixedly arranged on two sides of the gasoline engine, a rear handle is fixedly arranged on the rear side part of the gasoline engine, a cutting device is arranged at the front end of the gasoline engine, and a rotating part of the gasoline engine is connected to a transmission part of the cutting device. The cutting-preventing device is arranged in the sawing device of the gasoline saw with the cutting-preventing chain, when the gasoline saw meets dangerous conditions such as touching human bodies, an operator presses the safety, the outer frame of the cutting-preventing component is higher than the cutting component to form a cutting-preventing protective layer, the cutting component idles in the cutting-preventing protective layer, the operator or contact personnel cannot be injured, and dangerous accidents are prevented.

Description

Gasoline saw with anti-cutting chain

Technical Field

The invention relates to a gasoline saw with a cutting-proof chain.

Background

The gasoline saw is a power saw for felling and timber-making, the power part is a gasoline engine, the engine is a two-stroke engine, fuel oil is mixed oil of gasoline and engine oil, the gasoline saw has the advantages of convenience in carrying, simplicity in operation, high power, small vibration, high sawing efficiency, low felling cost and the like, can be used for operations such as pruning big trees, picking big materials, rescuing accidents and the like, and has become a dominant handheld felling professional felling gasoline saw in Chinese forest regions.

But it is a machine with great difficulty and strong danger for single person operation, and people or animals are not allowed to walk within 20 meters around before safe operation. The technical scheme includes that whether sundries such as angle iron and stones exist on the lawn must be checked, the sundries on the lawn are cleared away, the gasoline saw must be grasped and stabilized by two hands during working, two feet must stand stably, the sliding danger needs to be noticed, a safe position is selected to stand stably, the machine is forcibly pressed on the ground at a gasoline saw shell by the left hand, a thumb is arranged below the gasoline saw shell, the feet do not step on a protective tube, the machine does not need to be kneeled, and dangers and major accidents can occur if an operator carelessly and carelessly allows the gasoline saw to touch a human body.

Disclosure of Invention

The invention aims at the defects of the prior art and provides a gasoline saw with a cutting-proof chain, which solves the problems.

In order to solve the technical problem, the invention is solved by the following technical scheme:

the utility model provides a gasoline saw with anti-cutting chain, includes gasoline engine, and it has the breach to open on gasoline engine's the top, and gasoline engine's breach department installs the heating panel, and gasoline engine's both sides fixed mounting has handle and guard plate, and fixed mounting has the back handle on gasoline engine's the rear side position, is equipped with on gasoline engine's the front end and saw cuts the device, and gasoline engine's rotatable parts is connected to on the transmission part who saw cuts the device.

Furthermore, connecting holes are formed in two side faces of the gasoline engine, a locking buckle and a clamping plate are buckled on the connecting holes, the connecting holes are formed in the bottom of the heat dissipation plate, the other end of the locking buckle is buckled into the connecting holes of the heat dissipation plate, the clamping plate wraps and extrudes one side part of the lifting handle, and the other side part of the lifting handle outwards extends out of the side face of the gasoline engine at intervals.

Furthermore, a mounting hole is formed in the top of the rear handle, a cutting-proof button is mounted in the mounting hole, a push rod is propped in the cutting-proof button, and the tail end of the push rod is propped against a sliding component of the sawing device.

Furthermore, the saw cutting device comprises a guide plate, the tail part of the surface of the guide plate is provided with a mounting hole, and the guide plate is arranged on the gasoline engine through the mounting hole; the cutting-proof device is fixed into a whole by a fastener, two cutting-proof chains and a saw chain are sleeved on an outer side frame of the guide plate, the saw chain is arranged between the two cutting-proof chains, a sliding support plate is slidably arranged at the front side part of the guide plate, a sliding ejector rod and a saw chain driving wheel are arranged at the tail end of the guide plate, two ends of the sliding ejector rod are connected with ejector rods, and the ejector rod at one end is abutted against the tail end of the sliding support plate; the ejector pin of the other end supports anti-cutting button, and the top of sliding support plate blocks on the inner frame of two anti-cutting chains.

Further, the outer side face of the saw chain driving wheel is protruded to form two external meshing teeth with different sizes, the external meshing teeth with large diameters are meshed with the inner end face of the saw chain, and the external meshing teeth with small diameters are meshed and connected into the inner portion of the gasoline engine.

Furthermore, the cutting teeth of the saw chain protrude out of the outer frame of the cutting-proof chain, and the cutting-proof chain is formed by a plurality of thin elastic chain rings which are meshed with the discs end to end.

Furthermore, a thin circle of sliding grooves are formed in the outer frame of the plate surface of the guide plate, the anti-cutting chain is placed in the sliding grooves, two sliding guide grooves are formed in the plate surface of the guide plate, one sliding guide groove is arranged at the front side of the plate surface of the guide plate, the other sliding guide groove is arranged at the rear side of the plate surface of the guide plate, the sliding ejector rods are installed in the sliding guide grooves at the rear side, and the sliding support plates are installed in the sliding guide grooves at the front side.

Furthermore, the sliding guide grooves at the front side part are two obliquely distributed.

Has the advantages that: compared with the prior art, the invention has the following beneficial effects:

the cutting-preventing device is arranged in the sawing device of the gasoline saw with the cutting-preventing chain, and when the gasoline saw meets dangerous conditions such as touching human bodies, an operator presses the cutting-preventing button, the outer frame of the cutting-preventing component is higher than the cutting component to form a cutting-preventing protective layer, the cutting component idles in the cutting-preventing protective layer, so that the operator or contact personnel cannot be injured, and dangerous accidents are prevented.

The width of the rear side part of the cutting-prevention chain on the sawing device is larger than the thickness of the cutting teeth of the saw chain, the rear side part of the cutting-prevention chain can block the cutting teeth of the saw chain, and the cutting teeth of the saw chain can move to the rear side part of the guide plate and can not participate in cutting objects, so that the advantage is that the cutting teeth of the saw chain can not contact with the body of an operator if an emergency situation is met, for example, the body of the operator touches the rear side part of the gasoline saw cutting part.

Drawings

Fig. 1 is a block diagram of a gasoline saw with a cut-resistant chain.

Fig. 2 is another perspective view structural diagram of fig. 1.

Fig. 3 is a block diagram of the sawing device 8 in fig. 1.

Fig. 4 is an enlarged view of a portion of the structure of fig. 3.

Fig. 5 is another perspective view structural view of fig. 4.

Detailed Description

Referring to fig. 1 to 5, a gasoline saw with a cutting-proof chain comprises a gasoline engine 1, a notch (not shown) is formed in the top of the gasoline engine 1, a heat dissipation plate 2 is installed at the notch of the gasoline engine 1, a handle 4 and a protection plate 5 are fixedly installed on two sides of the gasoline engine 1, a rear handle 7 is fixedly installed on the rear side of the gasoline engine 1, a cutting device 8 is installed at the front end of the gasoline engine 1, a rotating part of the gasoline engine 1 is connected to a transmission part of the cutting device 8, the gasoline engine 1 provides power for the cutting device 8, and the cutting device 8 can cut an object to be cut.

Connecting holes (not marked in the figure) are formed in two side faces of the gasoline engine 1, a locking buckle 3 and a clamping plate 6 are buckled on the connecting holes, the connecting holes (not marked in the figure) are formed in the bottom of the heat dissipation plate 2, the other end of the locking buckle 3 is buckled in the connecting holes of the heat dissipation plate 2, the clamping plate 6 wraps and presses one side of the lifting handle 4, the other side of the lifting handle 4 extends out of the side face of the gasoline engine 1 at an outward interval, and an operator can horizontally hold one part of the lifting handle 4 and can also vertically hold one part of the lifting handle 4.

The gasoline engine 1 comprises an oil tank 11, the oil tank 11 is installed on the bottom of the gasoline engine 1, a cylinder body (not shown) is installed in the oil tank 11, a crankshaft (not shown) is installed in the cylinder body, the tail end of the crankshaft is connected with a rotating wheel (not shown), the rotating wheel is connected to a transmission component of the sawing device 8, an oil tank (not shown) is installed on the other side part of the oil tank 11, an oil injection port 13 is formed in the bottom of the oil tank, an oil inlet port of the oil tank is connected into the cylinder body, a lubricating oil tank body (not shown) is installed on the top of the oil tank 11, a lubricating oil injection port 12 is formed in the outside of the lubricating oil tank body, an oil discharge port of the lubricating oil tank body is connected onto the tail end of the sawing device 8, a starting zipper 14 is installed on the outside of the cylinder body, after the starting zipper 14 is pulled, the crankshaft in the cylinder body starts to rotate, meanwhile, the oil tank 11 supplies fuel oil, and the gasoline engine 1 supplies power to the sawing device 8, lubricating oil is filled into the cutting part of the sawing device 8 through the lubricating oil tank body, so that abrasion of the cutting part during rotation can be reduced, part of heat generated by friction is also taken away, and the service life of the sawing device 8 is prolonged.

The oil extraction interface of the lubricated oil tank body of oil tank 11 contacts on sawing device 8's cutting member, the oil extraction interface is opened manually at a set interval to lubricating oil, drip lubricating oil for sawing device 8's cutting member, drip lubricating oil has two benefits, one, can reduce the rotation resistance of cutting member on the mounting panel, because behind cutting wood and other object, a large amount of saw-dusts and dust have been gathered to the cutting tooth inside, these tiny granules are mingled with between cutting member and mounting panel, frictional force between the two has been increased, the installation face of mounting panel can be worn and torn in long-term operation, this leads to the interval grow between cutting member and the mounting panel, the cutting member can follow the mounting panel roll-off in cutting process, appear hindering danger such as people.

Secondly, lubricating oil is dripped into the cutting part of the sawing device 8, the temperature of the cutting part can be reduced, the cutting part and a cut object generate heat in the cutting process, one part of the heat is gathered in the cut object, the other part of the heat is transmitted to the cutting part, if the cutting process is too long and needs a long time, the generated heat cannot be released, a certain amount of heat is gathered to trigger the ignition point of the cut object, the cut object can generate spontaneous combustion, flame burns the cutting part of the sawing device 8, the cutting part of the sawing device 8 is deformed at high temperature, the wood cannot be normally cut in the later period, the service life of the gasoline saw is influenced, the flame can also burn the cut object, the cut object is damaged, other objects are seriously ignited, and fire is triggered.

Open on the top of back handle 7 has the mounting hole (not marked in the figure), install anti-cutting button 71 in the mounting hole, it has ejector pin (not shown) to push up in anti-cutting button 71's the inside, the tail end of ejector pin withstands on the sliding part of saw cutting device 8, press anti-cutting button 71 after, anti-cutting button 71 withstands the ejector pin and moves forward, the tail end of ejector pin withstands the sliding part who saw cuts device 8 and moves forward, sliding part can be with anti-cutting part jack-up, anti-cutting part exceeds cutting part and forms the protection isolation layer, prevent that cutting part from damaging operator or other personnel.

The sawing device 8 comprises a guide plate 81, a cutting-proof chain 82, a sliding ejector rod 83, a sliding support plate 84, a saw chain 85 and a saw chain driving wheel 86, wherein the tail part of the plate surface of the guide plate 81 is provided with a mounting hole 813, and the guide plate 81 is mounted on the gasoline engine 1 through the mounting hole 813; the cutting-proof chain saw is fixed into a whole by a fastener, two cutting-proof chains 82 and a saw chain 85 are sleeved on an outer side frame of a guide plate 81, the saw chain 85 is arranged between the two cutting-proof chains 82, a cutting tooth of the saw chain 85 protrudes out of the outer side frame of the cutting-proof chains 82, the cutting-proof chains 82 are coiled by head and tail meshing of a plurality of thin elastic chain rings, a sliding support plate 84 is installed at the front side part of the guide plate 81 in a sliding mode, a sliding ejector rod 83 and a saw chain driving wheel 86 are installed at the tail end of the guide plate 81, ejector rods are connected to two ends of the sliding ejector rod 83, and the ejector rod at one end abuts against the tail end of the sliding support plate 84; the ejector rod at the other end abuts against the anti-cutting button 71, and the top end of the sliding support plate 84 is clamped on the inner frames of the two anti-cutting chains 82.

Two external engaging teeth with different sizes are formed on the outer side surface of a saw chain driving wheel 86 in a protruding mode, the external engaging teeth with large diameters are meshed with the inner end surface of a saw chain 85, the external engaging teeth with small diameters are meshed and connected to a rotating wheel of a gasoline engine 1, after the gasoline engine 1 works, power is transmitted to the saw chain driving wheel 86 through the rotating wheel, the saw chain driving wheel 86 drives the saw chain 85 to rotate in a reciprocating mode on a guide plate 81, cutting teeth of the saw chain 85 cut an object, if dangerous conditions such as touching of a human body are met, a cutting-proof button 71 is directly pressed down, the cutting-proof button 71 pushes a sliding ejector rod 83 through the ejector rod, the ejector rod at the other end of the sliding ejector rod 83 simultaneously pushes a sliding support plate 84, the sliding support plate 84 slides forwards and is divided into two parts, the top end of the sliding support plate 84 pushes against the cutting-proof chain 82 to expand outwards, and the outer frame of the cutting-proof chain 82 is higher than the cutting teeth of the saw chain 85 to form a cutting-proof protective layer, the saw chain 85 idles in the cutting-proof protective layer, so that operators or contact personnel cannot be injured, and dangerous accidents are prevented.

A thin sliding groove 811 is formed on the outer frame of the plate surface of the guide plate 81, the anti-cutting chain 82 is placed in the sliding groove 811, two sliding guide grooves 812 are formed on the plate surface of the guide plate 81, one sliding guide groove 812 is placed in the front side portion of the plate surface of the guide plate 81, the other sliding guide groove 812 is placed in the rear side portion of the plate surface of the guide plate 81, and the sliding ejector 83 is installed in the sliding guide groove 812 in the rear side portion.

The rear part and the front part of the sliding groove 811 are semi-circular arc surfaces, the diameter of the rear semi-circular arc surface of the sliding groove 811 is larger than that of the front semi-circular arc surface, the cutting-proof chain 82 is sleeved on the sliding groove 811, the rear part of the cutting-proof chain 82 is inclined to the front part, the width of the rear part of the cutting-proof chain 82 is larger than the thickness of the cutting teeth of the saw chain 85, and through the operation habit of an operator, the object to be cut by the root of the saw chain 85 can be eliminated, the rear side part of the cutting prevention chain 82 can block the cutting teeth of the saw chain 85, the cutting teeth of the saw chain 85 move to the rear side part of the guide plate 81 and do not participate in cutting the object, so that the cutting prevention device has the advantages that if an emergency situation occurs, for example, the operator's body touches the rear portion of the gasoline saw cutting unit, the cutting teeth of the saw chain 85 do not touch the operator's body, and thus no danger or serious accident occurs.

The cutting-proof chain 82 comprises a plurality of elastic chain rings, the front end of each elastic chain ring is a circular ring, one side end face of the circular ring is provided with a small clamping groove, the other side end face of the circular ring is provided with a large clamping groove, an elastic pulling plate is fixedly inserted in the large clamping groove, the elastic pulling plate is made of organic matters and has good plasticity, the whole length of the elastic pulling plate can be changed by the pulling force, the elastic pulling plate can recover to the original structure after the pulling force is eliminated, the original shape of the elastic pulling plate can be kept after the elastic pulling plate is stretched for thousands of times, the whole length of the cutting-proof chain 82 cannot be lengthened, the mutual matching of the cutting-proof chain 82 and the sliding support plate 84 cannot be influenced, clamping bulges are formed at the tail ends of the elastic pulling plate in an outward protruding mode, the elastic pulling plate of each elastic chain ring is fixedly inserted in the connecting clamping groove of the adjacent elastic chain ring, and a plurality of elastic chain rings are sequentially clamped and fixed to form the chain, then connect the elastic chain circle of head to the elastic chain circle of afterbody, coil into cutting-proof chain 82 wholly, cutting-proof chain 82 can be according to the whole length of the adjustment that the length of baffle 81 corresponds, if install on little baffle 81, can pull down one section elastic chain circle, install on big baffle 81, can install one section elastic chain circle, let cutting-proof chain 82 install and keep tight state on baffle 81 all the time.

The thickness of the elastic chain ring of the cutting-proof chain 82 is 2mm, the cutting-proof chain 82 on two sides is installed on the sliding groove 811, the thickness that the whole thickness of the cutting-proof chain 82 exceeds the cutting teeth of the saw chain 85 is 4mm, the cutting-proof chain 82 cuts a cutting object, the cutting-proof chain 82 cannot influence the cutting process of the saw chain 85, namely, the cutting-proof chain 82 cannot squeeze the cutting seam, only the reciprocating swing of the cutting-proof chain 82 needs to advance, the width of the cut cutting seam is larger than the whole thickness of the cutting-proof chain 82, and the cutting process cannot be completed.

The slide plate 84 is installed in the slide guide grooves 812 of the front portion, the slide guide grooves 812 of the front portion are two obliquely arranged, and the slide plate 84 can be separated outwards in the two obliquely arranged slide guide grooves 812, so that the slide plate 84 can jack up and retract the cutting prevention chain 82.

The sliding support plate 84 is divided into two parts along the symmetry line, the tail ends of the two parts are inserted with the sliding sleeve 841, the sliding sleeve 841 is divided into two parts, the sliding sleeve 841 is inserted into the obliquely distributed sliding guide groove 812, the ejector pin abuts against the outer end face of the sliding sleeve 841, the inner side plate face of the sliding support plate 84 protrudes outwards with the clamping block 842, the side end face of the clamping block 842 is provided with a clamping groove (not shown), the inner frame of the cutting-proof chain 82 is clamped into the clamping groove, the ejector pin pushes the sliding sleeve 841, the sliding sleeve 841 slides outwards in the oblique sliding guide groove 812 in an oblique manner, the two parts of the sliding support plate 84 can be opened, the clamping block 842 pushes the cutting-proof chain 82 outwards in an oblique manner, and each elastic chain ring of the cutting-proof chain 82 can be stretched outwards to be larger, thereby playing a role of a protective layer.

In summary, the cutting prevention device is installed in the sawing device 8 of the gasoline saw with the cutting prevention chain, when the gasoline saw meets dangerous conditions such as touching human body, an operator presses the cutting prevention button 71, the outer frame of the cutting prevention part is higher than the cutting part to form a cutting prevention protective layer, the cutting part idles in the cutting prevention protective layer, the operator or contact personnel cannot be injured, and dangerous accidents are prevented.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.

Claims

1. A gasoline saw with a cutting-proof chain is characterized by comprising a gasoline engine (1), a notch is formed in the top of the gasoline engine (1), a heat dissipation plate (2) is installed at the notch of the gasoline engine (1), a lifting handle (4) and a protection plate (5) are fixedly installed on two sides of the gasoline engine (1), a rear handle (7) is fixedly installed on the rear side of the gasoline engine (1), a cutting-proof button (71) is installed in a mounting hole, an ejector rod is ejected in the cutting-proof button (71), the tail end of the ejector rod is ejected against a sliding part of the cutting-proof device (8), the cutting-proof device (8) comprises a guide plate (81), the gasoline engine is characterized in that a mounting hole (813) is formed in the tail portion of the plate surface of the guide plate (81), the guide plate (81) is installed on the gasoline engine (1) through the mounting hole (813), the guide plate is fixed into a whole through a fastening piece, two anti-cutting chains (82) and one saw chain (85) are sleeved on the outer side frame of the guide plate (81), the saw chain (85) is arranged between the two anti-cutting chains (82), a sliding support plate (84) is installed at the front side portion of the guide plate (81) in a sliding mode, a sliding ejector rod (83) and a saw chain transmission wheel (86) are installed at the tail end of the guide plate (81), ejector rods are connected to two ends of the sliding ejector rod (83), the ejector rod at one end abuts against the tail end of the sliding support plate (84), the ejector rod at the other end abuts against the anti-cutting button (71), and the top end of the sliding support plate (84) is clamped on the inner side frames of the two anti-cutting chains (82).

2. The gasoline saw with the cutting-proof chain as claimed in claim 1, wherein connecting holes are formed in two side faces of the gasoline engine (1), a locking buckle (3) and a clamping plate (6) are buckled on the connecting holes, a connecting hole is formed in the bottom of the heat dissipation plate (2), the other end of the locking buckle (3) is buckled in the connecting hole of the heat dissipation plate (2), the clamping plate (6) wraps and is extruded on one side portion of the handle (4), and the other side portion of the handle (4) extends out of the side face of the gasoline engine (1) at a distance.

3. Gasoline saw with anti-cutting chain according to claim 1, characterized in that the outer side of the saw chain drive wheel (86) is formed with two different sized external teeth, the large diameter external teeth engaging the inner end face of the saw chain (85), the small diameter external teeth engaging into the inside of the gasoline engine (1).

4. Gasoline saw with cutting-proof chain according to claim 1, characterized in that the cutting teeth of the saw chain (85) protrude out of the outer rim of the cutting-proof chain (82), the cutting-proof chain (82) being made up of several thin elastic chain loops engaging from head to tail.

5. The gasoline saw with the cutting prevention chain as set forth in claim 1, wherein the guide plate (81) is formed with a thin circle of sliding grooves (811) on the outer periphery of the plate surface thereof, the cutting prevention chain (82) is placed in the sliding grooves (811), the guide plate (81) is formed with two sliding guide grooves (812) on the plate surface thereof, one sliding guide groove (812) is disposed in a front portion of the plate surface of the guide plate (81), the other sliding guide groove (812) is disposed in a rear portion of the plate surface of the guide plate (81), the slide lift pin (83) is installed in the sliding guide groove (812) in the rear portion, and the slide support plate (84) is installed in the sliding guide groove (812) in the front portion.

6. Gasoline saw with anti-cutting chain according to claim 5, characterized in that the sliding guide grooves (812) of the front side portion are two diagonally distributed.