CN113246226A

CN113246226A - Lithium electric saw with chain capable of being rotationally adjusted in multiple dimensions

Info

Publication number: CN113246226A
Application number: CN202110486791.3A
Authority: CN
Inventors: 章磊; 方哲; 方立信
Original assignee: Zhejiang Jiahong Tool Manufacturing Co ltd
Current assignee: Zhejiang Jiahong Tool Manufacturing Co ltd
Priority date: 2021-05-02
Filing date: 2021-05-02
Publication date: 2021-08-13
Anticipated expiration: 2041-05-02
Also published as: CN113246226B

Abstract

The invention discloses a lithium electric saw with a chain capable of being rotationally adjusted in multiple dimensions, which comprises a rotating shell assembly, a fixed shell assembly, a locking assembly, a driving assembly and a chain assembly, wherein the rotating shell assembly is fixed on the fixed shell assembly; the rotating housing assembly comprises at least two rotating housings; the positions where the rotating shells are matched with the fixed shell assembly are provided with rotating ends; the stationary housing assembly includes at least two stationary housings. The invention can solve the technical problem of how to enable the chain component to rotate in three dimensions as required and simultaneously enable the chain component to be always in close fit with the driving component in a rotated state, thereby enabling the whole lithium electric saw to flexibly adjust the cutting angle as required.

Description

Lithium electric saw with chain capable of being rotationally adjusted in multiple dimensions

Technical Field

The invention relates to a pruning or standing timber delimbing tool, also can be a timber sawing tool, and particularly relates to a chain saw.

Background

The chain saw is mainly used for trimming or sawing wood, and mainly comprises an internal combustion type drive or a lithium battery drive at present, the chain saw driven by lithium electricity at present mainly comprises a battery, a shell, a button, a drive assembly with a motor, a chain assembly and the like, the battery supplies power to the motor, and thus the motor drives a chain of the chain assembly to rotate so as to complete cutting work. The chain on the existing chain saw is fixed, and the angle of the chain cannot be adjusted according to the requirement, so that the use of the product is influenced.

Chinese patent publication No. CN211960184U discloses a novel rotary positioning device for a high branch machine, relating to the technical field of high branch machines, including: the rotary operation part is provided with a fixed mounting frame, the connecting rod driving part comprises a connecting rod, a power head arranged at the rotating end of the connecting rod, a sliding sleeve sleeved on the connecting rod and a lock pin device used for clamping and fixing the positions of the rotary operation part and the connecting rod driving part, and the rotary operation part is a chain saw; the fixed mounting frame is provided with a plurality of clamping holes, the lock pin device comprises a guide seat, a movable pin rod and a return spring, the movable pin rod is arranged on the guide seat in a penetrating way, one end of the movable pin rod is fixed with the sliding sleeve, and the other end of the movable pin rod can be matched with the clamping holes in an inserting way; through the grafting cooperation in activity pin pole and joint hole for angle between rotatory operation portion and the connecting rod drive division can be adjusted, and be equipped with anti-skidding line and indicateing arm on the sliding sleeve, it is more convenient to adjust, has better regulation simultaneously and feels. The power head of the scheme can only longitudinally rotate on a plane, and three-dimensional multi-dimensional rotation cannot be realized.

Chinese patent publication No. CN212278974U discloses an angle-adjustable lithium electric saw, which comprises a shell, wherein a chain and a guide plate for mounting the chain are arranged on the shell, a driving motor for driving the chain is arranged in the shell, a mounting seat for mounting the chain and the guide plate is arranged on the shell, and the mounting seat is rotatably arranged on the shell and is relatively fixed with the shell through a fastener. The chain of the scheme can only longitudinally rotate on a plane, and cannot realize three-dimensional multi-dimensional rotation.

Disclosure of Invention

The invention aims to provide a lithium electric saw with a chain capable of being adjusted in a multi-dimensional rotating mode, and the technical problem of how to enable a chain assembly to rotate in a three-dimensional multi-dimensional mode as required and enable the chain assembly to be in close fit with a driving assembly all the time in a rotated state is solved, so that the cutting angle of the whole lithium electric saw can be adjusted flexibly as required.

The lithium electric saw with the chain capable of being rotationally adjusted in multiple dimensions comprises a rotating shell assembly, a fixed shell assembly, a locking assembly, a driving assembly and a chain assembly; the rotating shell assembly comprises two rotating shells; the positions where the rotating shells are matched with the fixed shell assembly are provided with rotating ends; the fixed shell assembly comprises two fixed shells; the fixed shells are internally provided with rotating cavities matched with the rotating ends, and the rotating ends rotate in the rotating cavities; the rotary shell component is provided with at least two symmetrical bolt holes on the surface facing the fixed shell component; the locking assembly is fixed on the fixed shell assembly, and a movable locking pin is movably arranged on the locking assembly with the at least two bolt holes; the driving assembly comprises a motor, a conical gear set and a driving chain disc; a rotating shaft of the motor is matched with one bevel gear of the bevel gear set, and the driving chain disc is fixed on the other bevel gear of the bevel gear set and matched with a chain of the chain assembly; the rotating shaft of the motor corresponds to the rotating central line of the rotating shell component; the chain assembly comprises a chain, and the chain is matched with the driving chain disc; the rotating shell assembly comprises two rotating shells which are oppositely arranged, namely a first rotating shell and a second rotating shell, each rotating shell and the fixed shell assembly are configured to be at rotating ends, and the rotating ends are combined to form a hollow cylindrical structure to form the rotating ends.

The rotating end is provided with at least one annular fixed ring, and the annular fixed ring is matched with a fixed baffle of the fixed shell component; the cylindrical hollow position is provided with the motor rotating shaft.

The first rotating shell is provided with a driving chain disc through hole, and the driving chain disc is arranged at the position of the driving chain disc through hole; the first rotating shell is provided with a first rotating surface at a position close to the rotating end and a position facing the fixed shell component, and the first rotating surface is provided with a bolt hole; a guide plate mounting groove is formed at a position close to the through hole of the driving chain disc, and the guide plate is mounted in the guide plate mounting groove; the guide plate mounting groove is internally provided with a guide plate matching end matched with a guide plate of the chain component, the guide plate matching end protrudes outwards, the top surface is provided with two protruding parts, and a fixing piece mounting hole is arranged between the two protruding parts.

A conical gear set placing cavity is formed in the second rotating shell, and the conical gear set placing cavity is communicated with the rotating end to form a rotating space of the motor rotating shaft; the conical gear set placing cavity is internally provided with a conical gear set of a driving assembly; the second rotary housing has a second rotary surface having a pin hole at a position near the rotary end position and toward the stationary housing assembly.

The fixed shell assembly comprises two fixed shells which are oppositely arranged, namely a first fixed shell and a second fixed shell, a half-rotating cavity structure is arranged at the position where each fixed shell and the rotating shell assembly are configured, the two half-rotating cavity structures are combined to form a hollow rotating cavity structure to be matched with the rotating end of the rotating shell assembly, a motor cavity is arranged beside the rotating cavity, and a motor of the driving assembly is arranged in the motor cavity.

The first fixed shell is provided with a toggle sliding groove and a locking pin telescopic groove; the locking assembly comprises a toggle button, a locking pin and a return spring; the dial button is disposed on the dial button sliding groove, and the lock pin is disposed in the lock pin telescopic groove together with the return spring.

The second fixed shell is provided with a locking pin telescopic groove, and the locking pin telescopic groove on the second fixed shell and the locking pin telescopic groove on the first fixed shell form a telescopic space of the locking pin together.

The toggle button comprises a toggle end and a linkage end; wherein the outer surface of the poking end is provided with an arc surface; the locking pin is provided with a fixing hole, and the linkage end is arranged in the fixing hole and is arranged together with the locking pin; the top of the locking pin and the position of the bolt hole are provided with step ends, the bottom of the locking pin is provided with a spring mounting hole, one end of a return spring is arranged in the spring mounting hole, and the other end of the return spring is abutted to the inside of the first fixed shell.

A driving chain disc fixing rod is arranged on a bevel gear matched with the driving chain disc, and the bevel gear is fixed with the driving chain disc through the driving chain disc fixing rod and is driven together; the driving chain disc fixing rod is provided with a bearing close to the driving chain disc, and the bearing is matched with the driving chain disc through hole of the first rotating shell.

The chain assembly comprises a chain, a guide plate and a protection plate; the inner side of the chain cooperates with a guide plate fixed to the first rotary housing, and a guard plate fixed to the first rotary housing on one side of the guide plate.

The invention has the beneficial effects that: compared with the existing chain saw, the scheme designs and optimizes the rotating shell assembly, the fixed shell assembly, the locking assembly, the driving assembly and the chain assembly; therefore, the chain can be rotated under the condition that the hand-held end of the chain saw, namely the fixed shell assembly, is not moved, and multi-dimensional rotation is realized; meanwhile, by the innovative configuration of the structure and the position of the driving assembly, the driving effect which is the same as that before rotation is kept after rotation, and the phenomenon of clamping or even locking after rotation does not exist.

Drawings

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

FIG. 2 is a schematic view of the structure of the other side of the present invention;

FIG. 3 is a schematic view of the assembly of rotatable components of the present invention;

FIG. 4 is a schematic view of the drive assembly of the present invention with the motor removed;

FIG. 5 is a schematic view of a rotating housing assembly;

FIG. 6 is a schematic view of a first rotating housing;

FIG. 7 is a schematic view of a second rotating housing;

FIG. 8 is a schematic view of the remaining components of the present invention after the components of FIG. 4 have been assembled and removed;

FIG. 9 is a schematic view of a first stationary housing;

FIG. 10 is a schematic view of a second stationary housing;

FIG. 11 is a schematic view of the locking assembly;

FIG. 12 is another side schematic view of the locking assembly;

FIG. 13 is a schematic representation of a first state of the invention;

FIG. 14 is a perspective view of a first aspect of the invention;

FIG. 15 is a schematic view of a second state of the invention after rotation;

FIG. 16 is a perspective view of the invention in a second state after rotation;

FIG. 17 is a schematic view of a third state of the invention after rotation;

FIG. 18 is a perspective view of the invention in a third rotated state;

FIG. 19 is an exploded schematic view of the present invention;

in the figure, 1, a rotating shell assembly, 11, a first rotating shell, 111, a rotating end, 112, a driving chain disc through hole, 113, a first rotating surface, 1131, a bolt hole, 114, a guide plate installation groove, 115, a guide plate matching end, 116, a bulge, 117, a fixing piece installation hole, 12, a second rotating shell, 121, a conical gear set placing cavity, 122, a second rotating surface, 13, a rotating end, 131, a fixing ring, 2, a fixing shell assembly, 21, a first fixing shell, 211, a toggle button sliding groove, 212, a locking pin telescopic groove, 22, a second fixing shell, 23, a fixing baffle, 24, a rotating cavity, 25, a motor cavity, 3, a locking assembly, 31, a toggle button, 311, a toggle end, 312, a linkage end, 32, a locking pin, 321, a fixing hole, 322, a spring installation hole, 33, a reset spring, 4, a driving assembly, 41, a motor, 42, a conical gear set, 421, a bevel gear, and a bevel gear set, 43. The chain wheel driving device comprises a driving chain wheel, 44, a driving chain wheel fixing rod, 5, a chain assembly, 51, a chain, 52, a guide plate, 53, a protection plate and 6, a bearing.

Detailed Description

Referring to fig. 1 to 19, the lithium electric saw with chain multi-dimensional rotation adjustment in the figures includes a rotating housing assembly 1, a fixed housing assembly 2, a locking assembly 3, a driving assembly 4, and a chain assembly 5. The rotating shell assembly 1 is used for rotating the whole chain assembly 5, so that the cutting angle can be conveniently adjusted according to the actual use condition; the stationary housing assembly 2 serves to provide a support portion for the rotating housing assembly 1 while facilitating the mounting of other components. The locking assembly 3 is used for clamping and positioning the rotated rotating shell assembly 1; the driving assembly 4 is used for rotating the cutter chain 51 of the chain assembly 5; the chain assembly 5 is used to complete the cutting operation.

The rotary housing assembly 1 is in this case designed as two oppositely arranged rotary housing structures, namely a first rotary housing 11 and a second rotary housing 12. One end of each rotating shell is a rotating end 111 at the bottom position in the figure and the position where the fixed shell component 2 is configured, and the two rotating ends 111 are combined to form a hollow cylindrical structure to form a rotating end 13 to realize the relative rotation with the fixed shell component 2. The design of the swivel end 13 of the swivel body facilitates the rotation of the entire swivel housing assembly 1 on the stationary housing assembly 2. The cylindrical hollow position facilitates penetration of the shaft of the motor 41, thereby avoiding the rotating housing assembly 1 from interfering with the drive assembly 4. The rotating end 13 is provided with two annular fixing rings 131, and the annular fixing rings 131 are matched with the fixed baffle 23 of the fixed shell component 2, so that the positioning and movable fixing effects are achieved, and the accuracy of the rotating position is guaranteed.

To facilitate engagement with the drive sprocket 43 of the drive assembly 4, the first rotary housing 11 has a drive sprocket through hole 112, and the drive sprocket 43 is disposed within the drive sprocket through hole 112 to facilitate engagement with the chain 51 of the chain assembly 5. The first rotary housing 11 has a first rotary surface 113 near the rotary end 13 and facing the stationary housing assembly 2, the first rotary surface 113 has a latch hole 1131, and the latch hole 1131 will cooperate with the latch hole 1131 of the second rotary housing 12 to achieve the locking and fixing of the rotary housing assembly 1 in cooperation with the locking pin 32. Guide plate mounting slots 114 are provided adjacent to drive sprocket through holes 112, and guide plates 52 are mounted in the guide plate mounting slots 114. The guide plate mounting slot 114 has a guide plate mating end 115 that mates with the guide plate 52 of the chain assembly 5, the guide plate mating end 115 projecting outwardly, the top surface having two tabs 116, and a fastener mounting hole 117 between the two tabs 116, such that the guide plate 52 is securely mounted in cooperation with the expansion member. In the scheme, the chain is driven by the driving chain disc 43 with the tooth structure, and in practical application, the chain can be driven by other structures.

In order to facilitate the cooperation with the driving assembly 4, the second rotating housing 12 has a conical gear set placing cavity 121 inside, and the conical gear set placing cavity 121 and the rotating end 111 penetrate to form a rotating space of the rotating shaft of the motor 41. A conical gear set of the driving assembly 4 is arranged in the conical gear set placing cavity 121; the second rotary housing 12 has a second rotary surface 122 at a position near the rotary end 13 and toward the stationary housing assembly 2, the second rotary surface 122 having a latch hole 1131. In the present case, the first rotation surface 113 and the second rotation surface 122 are both designed as planar structures. In practical applications, the number of the solid or virtual bodies representing the shape or structure and other properties such as material can be adjusted adaptively according to the needs.

The fixed shell component 2 comprises two fixed shells which are oppositely arranged, namely a first fixed shell 21 and a second fixed shell 22, each fixed shell and the rotating shell component 1 are configured to have a half-rotating cavity 24 structure, and the two half-rotating cavities 24 are combined to form a hollow rotating cavity 24 structure which is matched with the rotating end 13 of the rotating shell component 1 so as to realize the relative rotation of the two. Beside the rotation chamber 24 is a motor chamber 25, in which motor chamber 25 the motor 41 of the drive assembly 4 is arranged. Compared with the traditional structure, the innovative design of the first fixed shell 21 is provided with a toggle sliding groove 211 and a locking pin telescopic groove 212; wherein the knob sliding groove 211 is engaged with the knob 31 of the locking assembly 3, which facilitates the sliding of the knob to maintain the locking pin 32 in a locked or unlocked state with the latch hole 1131 of the rotating case assembly 1. The locking pin telescoping slot 212 cooperates with the locking pin 32 of the locking assembly 3, thus providing room for movement of the locking pin 32. The design of the other positions of the first stationary housing 21 can be referred to the existing design. The second fixed housing 22 also has a locking pin expansion groove 212, and the locking pin expansion groove 212 of the second fixed housing 22 and the locking pin expansion groove 212 of the first fixed housing 21 together constitute an expansion space of the locking pin 32. The design of the other positions of the second stationary housing 22 can be referred to the existing design.

The locking assembly 3 comprises a toggle button 31, a locking pin 32, a return spring 33. The dial 31 is disposed in the dial slide groove 211, and the lock pin 32 is disposed in the lock pin expansion groove 212 together with the return spring 33. The toggle button 31 includes a toggle end 311 and a linkage end 312. The outer surface of the toggle end 311 is provided with an arc surface which is convenient for a user to press; the locking pin 32 has a fixing hole 321, and the linking end 312 is disposed in the fixing hole 321 to be matched with the locking pin 32, so as to move the locking pin 32. The top of locking pin 32 is configured with a stepped end with latch hole 1131 to form a good fit. The lock pin 32 has a spring mounting hole 322 at the bottom thereof, and one end of the return spring 33 is disposed in the spring mounting hole 322, and the other end of the return spring 33 abuts against the inside of the first stationary housing 21. The locking work before and after rotation can be realized through the configuration.

The driving assembly 4 comprises a motor 41, a conical gear set 42 as a transmission assembly, and a driving chain disc 43; the motor 41 is located within the motor cavity 25 of the stationary housing assembly 2; a conical gear set 42 is arranged in the gear cavity of the second rotary housing 12 and is held fixed in relative rotational relationship by a bearing 6, said conical gear set 42 being formed by two meshing gears; the drive sprocket 43 protrudes from the drive sprocket through hole 112. The motor 41 of the scheme is a standard component, the rotating shaft of the motor 41 corresponds to the rotating central line of the rotating shell component 1, and through the design, the driving component 4 and the rotating shell component 1 can be well matched with each other no matter before or after rotation, and the driving component 4 cannot work due to position change. The rotating shaft of the motor 41 is matched with one bevel gear 421 of the bevel gear set 42, and a specific matching mode can be that a connecting rod and other structures are added between the bevel gear 421 and the rotating shaft of the motor 41, so that the rotating shaft of the motor 41 drives the bevel gear 421 to rotate. The driving chain disc 43 is fixed on another bevel gear 421 of the bevel gear set 42, the specific fixing mode is that a driving chain disc fixing rod 44 is arranged on the bevel gear 421 matched with the driving chain disc 43, and the bevel gear 421 is fixed with the driving chain disc 43 through the driving chain disc fixing rod 44 to transmit together; the drive chain disk fixing lever 44 has a bearing 6 at a position near the drive chain disk 43, and the bearing 6 is engaged with the drive chain disk through hole 112 of the first rotary housing 11. The drive sprocket 43 cooperates with the chain 51 of the chain assembly 5,

the chain assembly 5 includes a chain 51 having blades, a guide plate 52, and a guard plate 53. The inner side of the chain 51 forms a sliding fit with a sliding groove on a guide plate 52, which guide plate 52 is fixed to the first rotary housing 11. The shielding plate 53 is fixed to the first rotary housing 11 at one side of the guide plate 52. Thus, when the chain wheel 43 is driven to rotate, the chain 51 starts to rotate to drive the blade to cut the tree.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "fixedly" and "connected" are to be interpreted broadly, e.g., as fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The components and arrangements of the specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

Claims

1. Lithium electric saw of chain multidimension degree rotation adjustment, its characterized in that: comprises a rotary shell component, a fixed shell component, a locking component, a driving component and a chain component; the rotating shell assembly comprises two rotating shells; the positions where the rotating shells are matched with the fixed shell assembly are provided with rotating ends; the fixed shell assembly comprises two fixed shells; the fixed shells are internally provided with rotating cavities matched with the rotating ends, and the rotating ends rotate in the rotating cavities; the rotary shell component is provided with at least two symmetrical bolt holes on the surface facing the fixed shell component; the locking assembly is fixed on the fixed shell assembly, and a movable locking pin is movably arranged on the locking assembly with the at least two bolt holes; the driving assembly comprises a motor, a conical gear set and a driving chain disc; a rotating shaft of the motor is matched with one bevel gear of the bevel gear set, and the driving chain disc is fixed on the other bevel gear of the bevel gear set and matched with a chain of the chain assembly; the rotating shaft of the motor corresponds to the rotating central line of the rotating shell component; the chain assembly comprises a chain, and the chain is matched with the driving chain disc; the rotating shell assembly comprises two rotating shells which are oppositely arranged, namely a first rotating shell and a second rotating shell, each rotating shell and the fixed shell assembly are configured to be at rotating ends, and the rotating ends are combined to form a hollow cylindrical structure to form the rotating ends.

2. The lithium electric chain saw with multi-dimensional chain rotation adjustment according to claim 1, wherein: the rotating end is provided with at least one annular fixed ring, and the annular fixed ring is matched with a fixed baffle of the fixed shell component; the cylindrical hollow position is provided with the motor rotating shaft.

3. The lithium electric chain saw with multi-dimensional chain rotation adjustment according to claim 2, characterized in that: the first rotating shell is provided with a driving chain disc through hole, and the driving chain disc is arranged at the position of the driving chain disc through hole; the first rotating shell is provided with a first rotating surface at a position close to the rotating end and a position facing the fixed shell component, and the first rotating surface is provided with a bolt hole; a guide plate mounting groove is formed at a position close to the through hole of the driving chain disc, and the guide plate is mounted in the guide plate mounting groove; the guide plate mounting groove is internally provided with a guide plate matching end matched with a guide plate of the chain component, the guide plate matching end protrudes outwards, the top surface is provided with two protruding parts, and a fixing piece mounting hole is arranged between the two protruding parts.

4. The lithium electric saw with chain multi-dimensional rotation adjustment according to claim 2 or 3, characterized in that: a conical gear set placing cavity is formed in the second rotating shell, and the conical gear set placing cavity is communicated with the rotating end to form a rotating space of the motor rotating shaft; the conical gear set placing cavity is internally provided with a conical gear set of a driving assembly; the second rotary housing has a second rotary surface having a pin hole at a position near the rotary end position and toward the stationary housing assembly.

5. The lithium electric chain saw with multi-dimensional chain rotation adjustment according to claim 4, wherein: the fixed shell assembly comprises two fixed shells which are oppositely arranged, namely a first fixed shell and a second fixed shell, a half-rotating cavity structure is arranged at the position where each fixed shell and the rotating shell assembly are configured, the two half-rotating cavity structures are combined to form a hollow rotating cavity structure to be matched with the rotating end of the rotating shell assembly, a motor cavity is arranged beside the rotating cavity, and a motor of the driving assembly is arranged in the motor cavity.

6. The lithium electric chain saw with multi-dimensional chain rotation adjustment according to claim 5, wherein: the first fixed shell is provided with a toggle sliding groove and a locking pin telescopic groove; the locking assembly comprises a toggle button, a locking pin and a return spring; the dial button is disposed on the dial button sliding groove, and the lock pin is disposed in the lock pin telescopic groove together with the return spring.

7. The lithium electric saw with chain multi-dimensional rotation adjustment according to claim 5 or 6, characterized in that: the second fixed shell is provided with a locking pin telescopic groove, and the locking pin telescopic groove on the second fixed shell and the locking pin telescopic groove on the first fixed shell form a telescopic space of the locking pin together.

8. The lithium electric chain saw with multi-dimensional chain rotation adjustment according to claim 6, wherein: the toggle button comprises a toggle end and a linkage end; wherein the outer surface of the poking end is provided with an arc surface; the locking pin is provided with a fixing hole, and the linkage end is arranged in the fixing hole and is arranged together with the locking pin; the top of the locking pin and the position of the bolt hole are provided with step ends, the bottom of the locking pin is provided with a spring mounting hole, one end of a return spring is arranged in the spring mounting hole, and the other end of the return spring is abutted to the inside of the first fixed shell.

9. The lithium electric chain saw with multi-dimensional chain rotation adjustment according to claim 4, wherein: a driving chain disc fixing rod is arranged on a bevel gear matched with the driving chain disc, and the bevel gear is fixed with the driving chain disc through the driving chain disc fixing rod and is driven together; the driving chain disc fixing rod is provided with a bearing close to the driving chain disc, and the bearing is matched with the driving chain disc through hole of the first rotating shell.

10. The lithium electric saw with chain multi-dimensional rotation adjustment according to claims 2 and 4, characterized in that: the chain assembly comprises a chain, a guide plate and a protection plate; the inner side of the chain cooperates with a guide plate fixed to the first rotary housing, and a guard plate fixed to the first rotary housing on one side of the guide plate.