CN110810196A - Chain saw - Google Patents

Abstract

The invention discloses a chain saw, which comprises a body, a chain saw handle and a lifting handle, wherein the chain saw handle and the lifting handle are arranged on the body, the body comprises a chain saw shell, a driving mechanism arranged in the chain saw shell, a driving main shaft and a first chain wheel, the first chain wheel is sleeved on the driving main shaft, the driving mechanism drives the first chain wheel to rotate, the chain saw further comprises a first chain and a first guide plate, the driving mechanism drives the first chain to rotate at a high speed, the driving main shaft is connected with an auxiliary driving shaft through a linkage device, the auxiliary driving shaft rotates synchronously along with the driving main shaft, a second chain wheel is fixedly sleeved on the auxiliary driving shaft, the chain saw further comprises a second chain and a second guide plate, and the size of the second guide plate is smaller than the normal size and. The second guide plate and the body can change relative angles, the second guide plate can drive the secondary driving shaft to move through the linkage device, whether the second chain rotates or not is controlled, when the first guide plate is not used, the guide plate protective cover can be sleeved on the outer portion of the first guide plate, and the use safety is guaranteed.

Description

Chain saw

Technical Field

The invention relates to the technical field of garden tools, in particular to a chain saw.

Background

The chain saw, also called as chain saw, is a hand saw powered by gasoline engine, mainly used for lumbering and building timber, and its working principle is that the shearing action is carried out by the transverse movement of the staggered L-shaped blades on the saw chain. Chain saws are generally classified into power chain saws, non-power chain saws, and the like. The method is widely applied to operations such as lumbering, delimbing, wood making and the like in forestry production. When the chain saw is used for forest felling work, due to staggered growth of trees, a plurality of trees are close to each other, the distance between the trees and the guide plate is not enough for a guide plate of a common chain saw on the market, the smooth operation of cutting and sawing work is influenced, and in order to avoid the situation, two chain saws with different sizes and different powers are very inconvenient to carry.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the chain saw, two chain saw guide plates with different sizes are integrated on the same chain saw, the chain saw guide plate with the required size can be selected to work according to different actual use scenes, and the operation is convenient when the distance between trees is smaller.

The technical scheme adopted by the invention for solving the technical problems is as follows: a chain saw comprises a body, a chain saw handle and a lifting handle, wherein the chain saw handle and the lifting handle are arranged on the body, the body comprises a chain saw shell, a driving mechanism arranged in the chain saw shell, a driving main shaft and a first chain wheel, the first chain wheel is fixedly sleeved on the driving main shaft, the driving mechanism drives the first chain wheel to rotate, the chain saw further comprises a first chain and a first guide plate, the first chain is movably wound on the first guide plate, one end of the first chain is meshed with the first chain wheel, the driving mechanism drives the first chain to rotate at a high speed, the driving main shaft is connected with an auxiliary driving shaft through a linkage device, the auxiliary driving shaft synchronously rotates along with the driving main shaft, a second chain wheel is fixedly sleeved on the auxiliary driving shaft, the chain saw further comprises a second chain and a second guide plate, the second chain is movably wound on the second guide plate, one end of the second chain is meshed with the second chain wheel, the auxiliary driving shaft is fixedly provided with a linkage gear, the end part of the driving main shaft is provided with an inner gear, the linkage gear can move into the driving main shaft through the linkage device to be meshed with the inner gear, the auxiliary driving shaft and the driving main shaft are driven to be in a linkage state or a separation state through the linkage device, the linkage device comprises an upper tooth column, a lower tooth column and a limiting sleeve, a part of the lower tooth column is arranged outside the chain saw shell and can be pressed outside the chain saw shell, the upper part of the upper tooth column is rotatably connected with the auxiliary driving shaft through a bearing, the limiting sleeve is fixed inside the body, the limiting sleeve is provided with a guide groove and a limiting tooth groove, the upper tooth column and the lower tooth column are not completely meshed, the upper tooth column is provided with guide teeth, and the lower tooth column is provided with guide bars, the guide teeth and the guide strips are simultaneously arranged in the guide grooves to slide, a spring is arranged between the upper tooth column and the limiting sleeve, the lower tooth column upwards pushes the upper tooth column to leave the limiting position of the guide grooves so that the upper tooth column is meshed with the limiting tooth space and slides and rotates along the inclined plane of the limiting tooth space, at the moment, the guide teeth of the upper tooth column cannot fall into the guide grooves, the linkage gear on the auxiliary driving shaft is jacked into the driving main shaft to be meshed with the internal gear, when the upper tooth column is pushed upwards through the lower tooth column again, the guide teeth leave the limiting tooth space under the action of the spring and are meshed with the lower tooth column and slide and rotate until the guide teeth fall into the guide grooves, and at the moment, the auxiliary driving shaft is released from linkage with the driving main shaft; the length and the width of the second guide plate are smaller than those of the first guide plate, the second guide plate can be limited by a fastener after rotating on the body, and the first guide plate and the second guide plate are sleeved with detachable guide plate shields. The second guide plate and the body can change relative angles, the second guide plate can drive the secondary driving shaft to move through the linkage device, whether the second chain rotates or not is controlled, when the first guide plate is not used, the guide plate protective cover can be sleeved on the outer portion of the first guide plate, and the use safety is guaranteed. When the first guide plate and the first chain are used for working, the linkage device drives the auxiliary driving shaft to be separated from the driving main shaft, the second chain cannot rotate along with the auxiliary driving shaft, the second guide plate can be rotated to a position perpendicular to the body to be fixed, and the first chain can be used for normal working. When needs use second baffle and second chain during operation in narrow and small space, through the aggregate unit drive the auxiliary drive axle with the drive main shaft is connected, and the second chain is followed and is rotated this moment, can suit the baffle protection casing on first baffle, can use the second chain to cut the saw work this moment. When the chain saw is in a shutdown state, the second guide plate can be folded to a position relatively horizontal to the body, and the guide plate shield is arranged on the first guide plate and the second guide plate.

In the above technical solution, preferably, the second guide plate may be horizontally disposed with respect to the body, or vertically disposed upward with respect to the body.

In the above technical scheme, preferably, a first fixing plate is arranged on the first guide plate, and the first guide plate is fixed on the body by passing a fastening bolt through a limiting hole in the first fixing plate. By means of the arrangement, the first guide plate can be detached and fixed conveniently.

In the above technical solution, preferably, a second fixing plate and a third fixing plate are provided between the second guide plate and the chainsaw housing, the second guide plate is fixed to the body by fastening bolts passing through limiting holes on the second fixing plate or the third fixing plate, and when the second guide plate is fixed to the second fixing plate, the second guide plate is horizontally arranged with respect to the body; when the second guide plate is fixed on the third fixing plate, the second guide plate is vertically arranged upwards relative to the body. The second guide plate is convenient to position, and can be vertically arranged upwards relative to the body, so that the fixing reliability can be guaranteed, and the working safety is guaranteed.

In the above technical solution, preferably, the power source of the driving mechanism is a gasoline engine. Strong power, high power and convenient long-time field work.

The invention has the beneficial effects that: two chain saw guide plates with different sizes are integrated on the same chain saw, the chain saw guide plate with the required size can be selected to work according to different practical use scenes, and the operation can be facilitated when the distance between trees is smaller. The working states of the two guide plates are controlled by an external controllable linkage device, and when the chain saw is used in field, only one chain saw is needed to be carried, so that the chain saw is lower in cost, convenient to carry and flexible to use.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the internal structure of the driving main shaft and the auxiliary driving shaft in a separated state.

Fig. 2 is a schematic view of the internal structure of the driving main shaft and the auxiliary driving shaft in linkage state according to the present invention.

Fig. 3 is an external configuration diagram of the initial state of the present invention.

Fig. 4 is a schematic view of the external structure of the present invention in a use state.

Fig. 5 is an internal structural schematic of the linkage in an initial state of the invention.

Fig. 6 is an internal structural view of the linkage of the present invention in a state in which the upper column is lifted.

FIG. 7 shows the upper leg of the linkage of the present invention disengaged from the guide slot and engaged with the limit socket.

FIG. 8 is a schematic view of the upper and lower tooth posts of the linkage of the present invention.

FIG. 9 is a schematic view of the connection of the first guide plate of the present invention to the body.

In the drawing, 1, a body, 2, a chain saw handle, 3, a lifting handle, 4, a chain saw shell, 6, a driving main shaft, 7, a first chain wheel, 8, a first chain, 9, a first guide plate, 10, an auxiliary driving shaft, 11, a second chain wheel, 12, a second chain, 13, a second guide plate, 14, a linkage gear, 15, an internal gear, 16, a linkage device, 161, an upper tooth column, 162, a lower tooth column, 163, a limiting sleeve, 164, a spring, 165, a bearing, 166, a guide groove, 167, a limiting tooth groove, 168, a guide tooth, 169, a guide strip, 18, a first fixing plate and 20 fastening bolts are arranged.

Detailed Description

Referring to fig. 1 to 9, a chain saw comprises a body 1, a chain saw handle 2 and a carrying handle 3, the chain saw handle 2 and the carrying handle 3 are disposed on the body 1, the body 1 comprises a chain saw housing 4, a driving mechanism (not shown) disposed inside the chain saw housing 4, a driving spindle 6 and a first chain wheel 7, the first chain wheel 7 is fixedly sleeved on the driving spindle 6, the driving mechanism drives the first chain wheel 7 to rotate, the chain saw further comprises a first chain 8 and a first guide plate 9, the first chain 8 is movably wound on the first guide plate 9, one end of the first chain is meshed with the first chain wheel 7, the first chain 8 is driven to rotate at a high speed by the driving mechanism, the driving spindle 6 is connected with a secondary driving shaft 10 through a linkage device 16, the secondary driving shaft 10 rotates synchronously with the driving spindle 6, a second chain wheel 11 is fixedly sleeved on the secondary driving shaft 10, the chain saw further comprises a second chain 12 and a second guide plate 13, wherein the second chain 12 is movably wound on the second guide plate 13, one end of the second chain is engaged with the second chain wheel 11, a linkage gear 14 is fixedly arranged on the secondary driving shaft 10, an internal gear 15 is arranged at the end part of the driving main shaft 6, the linkage gear 14 can move into the driving main shaft 6 through the linkage device 16 to be engaged with the internal gear 15, the linkage device 16 drives the secondary driving shaft 10 and the driving main shaft 6 to be in a linkage state or a separation state, the linkage device 16 comprises an upper tooth column 161, a lower tooth column 162 and a limit sleeve 163, a part of the lower tooth column 162 is arranged outside the chain saw shell 4 and can be pressed outside the chain saw shell 4, the upper part of the upper tooth column 161 is rotatably connected with the secondary driving shaft 10 through a bearing 165, and the limit sleeve 163 is fixed inside the body 1, the limiting sleeve 163 is provided with a guide groove 166 and a limiting toothed groove 167, the upper toothed column 161 and the lower toothed column 162 are incompletely meshed, the upper toothed column 161 is provided with guide teeth 168, the lower toothed column is provided with a guide strip 169, the guide teeth 168 and the guide strip 169 are simultaneously arranged in the guide groove 166 to slide, a spring 164 is arranged between the upper toothed column 161 and the limiting sleeve 163, the lower toothed column 162 pushes the upper toothed column 161 upwards to leave the limit position of the guide groove 166, so that the upper toothed column 161 is meshed with the limiting toothed groove 167 and slides and rotates along the inclined plane of the limiting toothed groove 167, at this time, the guide teeth 168 of the upper toothed column 161 do not fall into the guide groove 166, the linkage gear 14 on the auxiliary driving shaft 10 is pushed into the driving main shaft 6 to be meshed with the inner gear 15, and the upper toothed column 161 is pushed upwards by the lower toothed column 162 again, the guide teeth 168 leave the limit tooth grooves 167 under the action of the springs 164, are engaged with the lower tooth posts 162 and slide and rotate until sliding into the guide grooves 166, and at this time, the auxiliary driving shaft 10 is released from linkage with the driving main shaft 6; the length and the width of the second guide plate 13 are both smaller than those of the first guide plate 9, the second guide plate 13 can be limited by fastening bolts 20 after rotating on the body 1, and the first guide plate 9 and the second guide plate 13 are sleeved with detachable guide plate shields 17. The relative angle of the second guide plate 13 and the body 1 can be changed, the linkage 16 can drive the secondary driving shaft 10 to displace, so as to control whether the second chain 12 rotates, and when the first guide plate 9 is not used, a guide plate protective cover (not shown in the figure) can be sleeved on the outer part of the first guide plate, so that the use safety is ensured. When the first guide plate 9 and the first chain 8 are used for work, the linkage 16 drives the auxiliary driving shaft 10 to be separated from the driving main shaft 6, the second chain 12 cannot rotate along with the rotation, the second guide plate 13 can be rotated to a position perpendicular to the body 1 to be fixed, and the first chain 8 can be used for normal work. When the second guide plate 13 and the second chain 12 are required to work in a narrow space, the linkage 16 drives the auxiliary driving shaft 10 to be connected with the driving main shaft 6, the second chain 12 rotates along with the driving main shaft, a guide plate protective cover can be sleeved on the first guide plate 9, and the second chain 12 can be used for sawing. When the chain saw is in a stop state, the second guide plate 13 can be folded to a position relatively horizontal to the body 1, and the guide plate guard can be mounted on both the first guide plate 9 and the second guide plate 13.

In order to facilitate the detachment and fixation of the first guide plate 9, a first fixing plate 18 is arranged on the first guide plate 9, and the first guide plate 9 is fixed on the body 1 by fastening bolts 20 penetrating through limiting holes on the first fixing plate 18.

In order to facilitate the positioning of the second guide plate 13, the vertical arrangement thereof with respect to the body 1 also ensures the reliability of the fixing, thus ensuring the safety of the work. A second fixing plate and a third fixing plate (not shown in the figures) are arranged between the second guide plate 13 and the chain saw shell 4, the second guide plate 13 is fixed on the body 1 through a fastening bolt 20 penetrating through a limiting hole on the second fixing plate or the third fixing plate, and when the second guide plate 13 is fixed on the second fixing plate, the second guide plate 13 is horizontally arranged relative to the body 1; when the second guide plate 13 is fixed to the third fixing plate, the second guide plate 13 is vertically disposed upward with respect to the body 1.

In order to ensure that the chain saw can work outdoors for a long time, the power source of the driving mechanism is the gasoline engine, and the chain saw is powerful in power and high in power.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention in any way, and simple modifications, equivalent changes and modifications may be made without departing from the technical scope of the present invention.

Claims (5)

1. A chain saw comprises a body, a chain saw handle and a lifting handle, wherein the chain saw handle and the lifting handle are arranged on the body, the body comprises a chain saw shell, a driving mechanism arranged in the chain saw shell, a driving main shaft and a first chain wheel, the first chain wheel is fixedly sleeved on the driving main shaft, the driving mechanism drives the first chain wheel to rotate, the chain saw further comprises a first chain and a first guide plate, the first chain is movably wound on the first guide plate, one end of the first chain is meshed with the first chain wheel, and the first chain is driven to rotate at a high speed through the driving mechanism, and the chain saw is characterized in that: the driving main shaft is connected with a secondary driving shaft through a linkage device, the secondary driving shaft synchronously rotates along with the driving main shaft, a second chain wheel is fixedly sleeved on the secondary driving shaft, the secondary driving shaft further comprises a second chain and a second guide plate, the second chain is movably wound on the second guide plate, one end of the second chain is meshed with the second chain wheel, a linkage gear is fixedly arranged on the secondary driving shaft, an internal gear is arranged at the end part of the driving main shaft, the linkage gear can move into the driving main shaft through the linkage device to be meshed with the internal gear, the linkage device is used for driving the secondary driving shaft and the driving main shaft to be in a linkage state or a separation state, the linkage device comprises an upper tooth column, a lower tooth column and a limiting sleeve, one part of the lower tooth column is arranged outside the chain saw shell and can be pressed outside the chain saw shell, the upper part of the upper toothed column is rotationally connected with the auxiliary driving shaft through a bearing, the limiting sleeve is fixed in the body, the limiting sleeve is provided with a guide groove and a limiting toothed groove, the upper toothed column and the lower toothed column are not completely meshed, the upper toothed column is provided with guide teeth, the lower toothed column is provided with a guide strip, the guide teeth and the guide strip are simultaneously arranged in the guide groove to slide, a spring is arranged between the upper toothed column and the limiting sleeve, the lower toothed column upwards pushes the upper toothed column to leave the limiting position of the guide groove so that the upper toothed column is meshed with the limiting toothed groove and slides and rotates along the inclined plane of the limiting toothed groove, at the moment, the guide teeth of the upper toothed column cannot fall into the guide groove, the linkage gear on the auxiliary driving shaft is jacked into the driving main shaft to be meshed with the inner gear, and when the upper toothed column is upwards pushed through the lower toothed column again, the guide teeth leave the limiting tooth grooves under the action of the spring, are meshed with the lower tooth column and slide and rotate until sliding into the guide grooves, and at the moment, the auxiliary driving shaft is released from linkage with the driving main shaft; the length and the width of the second guide plate are smaller than those of the first guide plate, the second guide plate can be limited by a fastener after rotating on the body, and the first guide plate and the second guide plate are sleeved with detachable guide plate shields.

2. A chain saw as set forth in claim 1 wherein: the second guide plate may be horizontally disposed with respect to the body or vertically disposed upward with respect to the body.

3. A chain saw as set forth in claim 1 wherein: the first guide plate is provided with a first fixing plate, and the first guide plate is fixed on the body through a fastening bolt penetrating through a limiting hole in the first fixing plate.

4. A chain saw as set forth in claim 2 wherein: a second fixing plate and a third fixing plate are arranged between the second guide plate and the chain saw shell, the second guide plate is fixed on the body through fastening bolts penetrating through limiting holes in the second fixing plate or the third fixing plate, and when the second guide plate is fixed on the second fixing plate, the second guide plate is horizontally arranged relative to the body; when the second guide plate is fixed on the third fixing plate, the second guide plate is vertically arranged upwards relative to the body.

5. A chainsaw according to any of the preceding claims wherein: the power source of the driving mechanism is a gasoline engine.

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