CN114505917A

CN114505917A - Electric chain saw with variable-frequency brushless motor

Info

Publication number: CN114505917A
Application number: CN202210036611.6A
Authority: CN
Inventors: 周亮
Original assignee: Shenzhen Tieshou Innovation Technology Co ltd
Current assignee: Shenzhen Tieshou Innovation Technology Co ltd
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-05-17
Anticipated expiration: 2042-01-13
Also published as: CN114505917B

Abstract

The invention relates to an electric chain saw with a variable-frequency brushless motor, belongs to the technical field of electric tools, and provides the electric chain saw with the variable-frequency brushless motor. The saw chain is movably adjusted at the front sides of the first guide plate and the second guide plate through the connection of the tensioning device, so that the connection of the saw chain is tensioned and loosened, the tensioning degree of the saw chain is adjusted, the stability is ensured, and when the tensioning device and the guide plate chain wheel move backwards, the saw chain is separated from the guide plate chain wheel and matched with a brake switch in the device, the saw chain stops rotating, people are prevented from being injured, and the safety of the device is ensured.

Description

Electric chain saw with variable-frequency brushless motor

Technical Field

The invention relates to an electric chain saw with a variable-frequency brushless motor, and belongs to the technical field of electric tools.

Background

In industries such as forest valve wood, saw wood, decoration and the like, a common tool is an electric chain saw and a gasoline saw, the electric chain saw is a tool frequently used by people in the felling industry, the electric chain saw is developed to be a cutting tool which uses electricity as power and is used for cutting wood, stone, steel and the like, the time and labor consumed by cutting materials are greatly saved, and the saw blades of the electric saw are generally in a circular shape, a strip shape, a chain type and the like.

In the cutting process of the electric chain saw, the surface of some branches, weeds or plant stems has high toughness, is not easy to cut off at one time, and often is wound into the shell along with the chain; when a big tree is cut, the bark is easy to block, the bark can be wound on a motor shaft or a chain wheel even after long-term rotation, or dust generated during felling is easy to accumulate in the motor shaft or the chain wheel, the machine can be blocked and can not work continuously due to the reasons, at the moment, the motor needs to be turned off, sundries can be taken out by manual pulling, much time and energy are consumed, meanwhile, because the saw chain is directly contacted with the guide plate and the chain wheel, in the high-speed rotation process, great heat can be generated between the saw chain and the guide plate and the chain wheel, the friction force between the saw chain and the guide plate and the chain wheel can be increased due to the great heat, when a hard object such as a tree knot or a metal object is cut in the actual operation process, the electric chain saw can jump up towards the body direction of an operator, commonly called rebound is generated, certain danger is formed, if the situation of the rebound occurs, the electric chain saw needs to be braked urgently, namely, the electric chain saw is applied with emergency braking to stop the chain in a short time to prevent the chain from cutting an operator, but the conventional braking apparatus for the electric chain saw is deficient in convenience and sensitivity of operation.

Therefore, the electric chain saw with the variable-frequency brushless motor is improved.

Disclosure of Invention

The electric chain saw has the advantages of convenience for tensioning, adjusting and controlling the saw chain of the electric chain saw, convenience for quickly braking the electric chain saw, guarantee of use safety of the electric chain saw, convenience for heat dissipation and dust removal and the like, and solves the technical problems in the background art.

(II) technical scheme

In order to achieve the purpose, the invention provides an electric chain saw with a variable-frequency brushless motor, which comprises an installation cover, a machine body, a baffle plate, a base and a handle, wherein a chain saw guide plate is installed inside the installation cover and the machine body, the chain saw guide plate comprises a first guide plate and a second guide plate which are symmetrically connected, a guide plate chain wheel and a gear are respectively sleeved at two ends of the first guide plate and the second guide plate, a saw chain is sleeved at the outer sides of the guide plate chain wheel and the gear, a tensioning device is connected to the middle part of the guide plate chain wheel, and one end of the gear is connected with the variable-frequency brushless motor.

Wherein, overspeed device tensioner includes the push pedal, the front end of push pedal is connected with the adapter sleeve, just the one end of adapter sleeve is passed through the hinge and is articulated, the other end of adapter sleeve is connected with the screw to install in the upper end of push pedal through the screw, the internal rotation of push pedal installs the ball, just the rear end of push pedal is connected with electric putter and compression spring, and electric putter and compression spring's the other end connect the inside at first baffle and second baffle.

The dustproof filter plate is mounted inside the machine body, and air inlet holes are formed in the upper end and the lower end of the rear side of the dustproof filter plate.

The connecting plate is mounted at the front end of the base, the connecting plate is tightly attached to the rear side surface of the machine body, and bolts are mounted on the connecting plate and the machine body in a connecting mode.

And one side of the gear is sleeved with a fan blade, and the fan blade rotates synchronously at the same speed along with the gear.

The base comprises a casing, a connecting groove is formed in the middle of the casing, a telescopic rod is connected inside the connecting groove, and the front end of the telescopic rod is fixedly installed on the machine body.

The middle part of the guide plate chain wheel is provided with a groove, and the width value of the groove is consistent with that of the tensioning device.

Wherein, all seted up row's cinder notch and row's cinder hole on first baffle and the second baffle, just the bar groove has all been seted up at both ends around first baffle and the second baffle to carry out the activity through the bar groove and cup joint baffle sprocket and gear.

Also provides a method for the electric chain saw with the variable-frequency brushless motor, and the beneficial effects of adopting the variable-frequency brushless motor

The invention provides an electric chain saw with a variable-frequency brushless motor, which has the beneficial effects that:

1. the chain saw guide plate is divided into the first guide plate and the second guide plate, the guide plate chain wheel and the gear are sleeved at the two ends of the middle of the first guide plate and the second guide plate, so that a saw chain is supported and connected, the middle of the guide plate chain wheel is sleeved with the tensioning device, the tensioning device is connected with the tensioning device to be movably adjusted on the front sides of the first guide plate and the second guide plate, the saw chain is tensioned and loosened, the saw chain is tensioned when the tensioning device and the guide plate chain wheel extend out towards the front sides, the stability of the saw chain in the using process is facilitated, when the tensioning device and the guide plate chain wheel move backwards, the saw chain is instantaneously loosened and unloaded from a tensioning state and is separated from the guide plate chain wheel, and a brake switch inside the device is matched, so that the saw chain stops rotating, the injury to people is avoided, and the safety of the device is guaranteed.

2. Through having seted up the cavity at the middle part of fuselage, and cup jointed the flabellum on the gear, the flabellum carries out high-speed rotation along with the rotation of gear, it flows to drive the air, and discharge the junction by chain saw baffle and saw chain after filtering the air on dustproof filter plate, and circulate along the surface of chain saw baffle, remove dust and dispel the heat to chain saw baffle and saw chain, avoid the inside piling up of dust that appears of device, and effectively avoid appearing remaining of residue on the saw chain.

3. Be equipped with the casing through the rear end at the fuselage, and carry out fixed connection through connecting plate and bolt between fuselage and the casing, be convenient for guarantee the connection stability between casing and the fuselage, and the middle part of casing has seted up the spread groove, and be connected with the telescopic link through the spread groove, extend fuselage and bolt through the telescopic link, be convenient for maintain the trees of high altitude position, and the telescopic link can accomodate the inside at the spread groove completely when the shrink state, the multi-mode of the device of being convenient for is used, and save device space.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electric chain saw with a variable frequency brushless motor provided by the present application;

FIG. 2 is a schematic structural diagram of an electric chain saw with a variable frequency brushless motor provided herein;

FIG. 3 is a schematic structural diagram of an electric chain saw with a variable frequency brushless motor according to the present application;

FIG. 4 is a schematic structural diagram of an electric chain saw with a variable frequency brushless motor according to the present application;

FIG. 5 is a schematic view of an electric chain saw with a variable frequency brushless motor according to the present application;

FIG. 6 is a schematic structural diagram of an electric chain saw with a variable frequency brushless motor according to the present application;

FIG. 7 is a schematic view of an electric chain saw with a variable frequency brushless motor according to the present application;

fig. 8 is a schematic structural diagram of an electric chain saw with a variable frequency brushless motor according to the present application.

In the figure: 1. installing a cover; 2. a body; 3. a baffle plate; 4. a base; 41. a housing; 42. connecting grooves; 5. a handle; 6. a connecting plate; 7. a bolt; 8. a chain saw guide plate; 81. a first guide plate; 82. a second guide plate; 83. a guide plate sprocket; 84. a gear; 85. a variable frequency brushless motor; 86. a fan blade; 87. a tensioning device; 871. pushing the plate; 872. a ball bearing; 873. connecting sleeves; 874. a screw; 875. an electric push rod; 876. a compression spring; 9. a saw chain; 10. an air inlet; 11. a dustproof filter plate; 12. a telescopic rod.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1-8, the present embodiment provides an electric chain saw with a variable frequency brushless motor, which includes a mounting cover 1, a body 2, a baffle 3, a base 4 and a handle 5, a chain saw guide 8 is mounted inside the mounting cover 1 and the body 2, the chain saw guide 8 includes a first guide 81 and a second guide 82 which are symmetrically connected, and two ends of the first guide 81 and the second guide 82 are respectively sleeved with a guide sprocket 83 and a gear 84, a saw chain 9 is sleeved outside the guide sprocket 83 and the gear 84, a tensioning device 87 is connected to the middle of the guide sprocket 83, one end of the gear 84 is connected with a variable frequency brushless motor 85, the tensioning device 87 connects the guide sprocket 83 and the saw chain 9, and controls the tensioning degree of the saw chain 9 through the extension and retraction of the tensioning device 87, so as to ensure the stable processing of the saw chain 9 and the rapid braking in cooperation with a brake switch of the electric chain saw, the device of being convenient for, frequency conversion brushless motor 85 adopt brushless DC motor, mainly comprise motor main part and driver, and brushless motor has not had the brush, and frictional force reduces greatly during the operation, and the operation is smooth and easy, and the noise can hang down many, and is longe-lived, low maintenance cost, and digital frequency conversion control, the controllability is strong, is convenient for carry out frequency conversion variable speed drive to saw chain 9, makes the use of device more convenient.

The tensioning device 87 comprises a push plate 871, a connecting sleeve 873 is connected to the front end of the push plate 871, one end of the connecting sleeve 873 is hinged through a hinge, a screw 874 is connected to the other end of the connecting sleeve 873 and is mounted at the upper end of the push plate 871 through the screw 874, a ball 872 is rotatably mounted in the push plate 871, an electric push rod 875 and a compression spring 876 are connected to the rear end of the push plate 871, the other ends of the electric push rod 875 and the compression spring 876 are connected in the first guide plate 81 and the second guide plate 82, the tensioning device 87 is mounted and used for driving the front end of the saw chain 9 to be rotatably connected on the guide plate sprocket 83, and the sprocket 83 and the tensioning device 87 are used for performing telescopic movement at the front ends of the first guide plate 81 and the second guide plate 82 so as to adjust the tensioning degree of the saw chain 9, so as to ensure the stability of the saw chain 9 in use, and when the guide plate sprocket 83 and the tensioning device 87 are in a retracted state, the saw chain 9 and the guide plate chain wheel 83 are separated in a falling mode, and the saw chain 9 is conveniently and rapidly braked by matching with a brake switch of the device, so that the device is prevented from hurting people in emergency.

The internally mounted of fuselage 2 has dustproof filter plate 11, inlet port 10 has all been seted up at both ends about the rear side of dustproof filter plate 11, the upper and lower both ends at fuselage 2 are seted up to inlet port 10, and the installation of dustproof filter plate 11 is convenient for filter the inside air of infiltration inlet port 10, avoid inside gear 84 and the variable frequency brushless motor 85 isotructure of dust viper fuselage 2, guarantee the inside dustless of device, and the air current after the filtration on the dustproof filter plate 11 carries out quick heat dissipation to parts such as the inside gear 84 of fuselage 2 and variable frequency brushless motor 85 under the quick drive of flabellum 86, and blow out along the both sides face of chain saw baffle 8, be convenient for spill the remaining temperature on the chain saw baffle 8, the use of the device of being convenient for.

Connecting plate 6 is installed to base 4's front end, and connecting plate 6 hugs closely at the rear side surface of fuselage 2, and connects on connecting plate 6 and the fuselage 2 and install bolt 7, and fuselage 2 and base 4's installation are connected through connecting plate 6 and bolt 7, are convenient for guarantee base 4 and the stable connection in the use, improve the stability of device.

Gear 84 one side has cup jointed flabellum 86, flabellum 86 rotates with the speed along with gear 84 is synchronous, the installation of flabellum 86 is convenient for drive the inside air current of fuselage 2 along with gear 84's rotation and flows, be convenient for to parts such as chain saw baffle 8 in the use, saw chain 9 prevent dust the heat dissipation, and the air current is along the blowout of front end installing port department of installation lid 1 and fuselage 2, avoid the installing port to advance the ash and the jam that saw-dust residue appears in unnecessary gap department behind installation chain saw baffle 8 and saw chain 9, the use of the device of being convenient for, need not to carry out too much clearance.

Base 4 includes casing 41, and connecting groove 42 has been seted up at casing 41's middle part, and the internal connection of connecting groove 42 has telescopic link 12, and the front end fixed mounting of telescopic link 12 is on fuselage 2, and base 4 supports with fuselage 2 to be connected to handle and handle 5 through fuselage 2 upper end take the use to the device together, guarantee the stability of device.

The middle part of the guide plate chain wheel 83 is provided with a groove, the width value of the groove is consistent with that of the tensioning device 87, the guide plate chain wheel 83 and the tensioning device 87 are installed in a sleeved mode, the guide plate chain wheel 83 and the saw chain 9 are also installed in a sleeved mode, the guide plate chain wheel 83 and the saw chain 9 are pushed by the tensioning device 87 to change the connection tightness of the guide plate chain wheel 83 and the saw chain 9, the tensioning degree of the saw chain 9 can be conveniently controlled and adjusted, the integral using state of the device is adjusted, and the using faults of the device are avoided.

Arrange the cinder notch and arrange the cinder hole on first baffle 81 and the second baffle 82 all seted up, and the bar groove has all been seted up at both ends around first baffle 81 and the second baffle 82 to carry out the activity through the bar groove and cup joint baffle sprocket 83 and gear 84, arrange the cinder notch and arrange the cinder hole and block up the setting and be convenient for clear away the residue that the saw chain 9 rotated the in-process and carried on first baffle 81 and second baffle 82, avoid the residue to get into the inside of fuselage 2 and appear blockking up. And the sharpness of the saw chain 9 in the using process is ensured, and the device is convenient to use with high efficiency.

Specifically, this electric chain saw with inverter brushless motor when using: the saw chain 9 is installed and connected through the chain saw guide plate 8, the saw chain 9 is engaged with the gear 84 and the variable frequency brushless motor 85 in an inter-tooth mode inside the installation cover 1, the gear 84 and the saw chain 9 are driven to rotate rapidly through the variable frequency brushless motor 85, wood is cut through a blade installed on the saw chain 9, a fan blade 86 sleeved outside the gear 84 is subjected to a rapid device while the gear 84 rotates to drive air inside the machine body 2 to flow rapidly, the air enters the machine body 2 through the air inlet 10 and is blown out from the front side opening of the machine body 2 after being filtered through the dustproof filter plate 11, the saw chain 9 is blown in the directions of the chain saw guide plate 8 and the saw chain 9, residual wood chips and dust on the saw chain 9 are removed, the saw chain 9 and the chain saw guide plate 8 are convenient to dissipate heat, and the cutting effect of the saw chain 9 is prevented from being influenced by heat generated by the saw chain 9 in the cutting process, and in the process of connecting the saw chain 9 with the chain saw guide plate 8, the two ends of the saw chain 9 are supported and connected through the guide plate chain wheel 83 and the gear 84, the middle part of the guide plate chain wheel 83 is sleeved with the tensioning device 87, the guide plate chain wheel 83 is tightly sleeved in the tensioning device 87 through the push plate 871 and the connecting sleeve 873, and is supported and connected through the compression spring 876 and the electric push rod 875, when the electric push rod 875 extends outwards, the guide plate chain wheel 83 and the saw chain 9 are supported, so that the front end of the saw chain 9 is tensioned, the output of the saw chain 9 is stable, when the electric chain saw is used in an emergency braking situation, the electric push rod 875 connected on the push plate 871 is quickly powered off, the tensioning device 87 and the guide plate chain wheel 83 are quickly pulled back under the elastic retraction of the compression spring 876, the connection of the saw chain 9 on the guide plate chain wheel 83 is disconnected, the force of the saw chain 9 is removed, and the phenomenon that the people are hurt to the saw chain 9 is avoided, and fuselage 2 and base 4 are fixed through connecting plate 6 and bolt 7, and the internal connection of base 4 has telescopic link 12, telescopic link 12 carries out fixed connection with the lateral wall of fuselage 2, before telescopic link 12 is flexible, loosen connecting plate 6 on by bolt 7, and lengthen the distance between fuselage 2 and the base 4 through telescopic link 12, be convenient for increase the length of fuselage 2 and saw chain 9 when using, saw off the branch eminence, the convenient use of the device of being convenient for.

The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims

1. The utility model provides an electric chain saw with frequency conversion brushless motor, includes installation lid (1), fuselage (2), baffle (3), base (4) and handle (5), its characterized in that: the inside mounting of installation lid (1) and fuselage (2) has chain saw baffle (8), chain saw baffle (8) are including first baffle (81) and second baffle (82) of symmetric connection, just baffle sprocket (83) and gear (84) have been cup jointed respectively at the both ends of first baffle (81) and second baffle (82), saw chain (9) have been cup jointed in the outside of baffle sprocket (83) and gear (84), the middle part of baffle sprocket (83) is connected with overspeed device tensioner (87), just gear (84) one end is connected with frequency conversion brushless motor (85).

2. The electric chain saw with the variable frequency brushless motor according to claim 1, wherein: overspeed device tensioner (87) are including push pedal (871), the front end of push pedal (871) is connected with adapter sleeve (873), just the one end of adapter sleeve (873) is through hinge joint, the other end of adapter sleeve (873) is connected with screw (874) to install the upper end at push pedal (871) through screw (874), ball (872) are installed in the inside rotation of push pedal (871), just the rear end of push pedal (871) is connected with electric putter (875) and compression spring (876), and the inside at first baffle (81) and second baffle (82) is connected to the other end of electric putter (875) and compression spring (876).

3. The electric chain saw with the variable frequency brushless motor according to claim 1, wherein: the dust-proof filter plate is characterized in that a dust-proof filter plate (11) is mounted inside the machine body (2), and air inlets (10) are formed in the upper end and the lower end of the rear side of the dust-proof filter plate (11).

4. The electric chain saw with the variable frequency brushless motor according to claim 1, wherein: connecting plate (6) are installed to the front end of base (4), connecting plate (6) hug closely at the rear side surface of fuselage (2), just connecting on connecting plate (6) and fuselage (2) and installing bolt (7).

5. The electric chain saw with the variable frequency brushless motor according to claim 1, wherein: one side of the gear (84) is sleeved with a fan blade (86), and the fan blade (86) rotates synchronously at the same speed along with the gear (84).

6. The electric chain saw with the variable frequency brushless motor according to claim 1, wherein: base (4) include casing (41), connecting groove (42) have been seted up at the middle part of casing (41), the internal connection of connecting groove (42) has telescopic link (12), the front end fixed mounting of telescopic link (12) is on fuselage (2).

7. The electric chain saw with the variable frequency brushless motor according to claim 1, characterized in that: the middle part of the guide plate chain wheel (83) is provided with a groove, and the width value of the groove is consistent with that of the tensioning device (87).

8. The electric chain saw with the variable frequency brushless motor according to claim 1, wherein: all seted up row's cinder notch and row's cinder hole on first baffle (81) and second baffle (82), just the bar groove has all been seted up at both ends around first baffle (81) and second baffle (82) to carry out the activity through the bar groove and cup joint baffle sprocket (83) and gear (84).