CN117245738B - Tensioning mechanism and chain saw - Google Patents

Abstract

The application discloses a tensioning mechanism and a chain saw, and relates to the technical field of chain saws. The application comprises the following steps: the carrier is horizontally and slidably provided with a moving seat, and the moving seat is rotatably provided with a chain wheel through a rotating shaft; the driving mechanism comprises an adjusting rod rotatably mounted on the carrier, and a rotary transmission component acting on the movable seat is mounted on the carrier and used for converting the rotary motion of the adjusting rod into the micro sliding motion of the movable seat. According to the application, the movable seat is moved in a small amplitude by matching the rotating adjusting rod with the driving mechanism, the position of the chain wheel arranged on the movable seat is changed, so that the loosening of the chain is accurately adjusted, the position of the sliding part at the moment can be recorded by the recording mechanism, the chain wheel can be quickly moved to the corresponding position when different materials are cut, and the tightness of the chain is indirectly changed, so that the chain is more convenient and quicker to use.

Description

Tensioning mechanism and chain saw

Technical Field

The application relates to the technical field of chain saws, in particular to a tensioning mechanism and a chain saw.

Background

In the woodworking, construction and other industries, chainsaws are a common tool for cutting wood, metal and other materials. Chain saws are typically comprised of a chain that is comprised of a series of interconnected links. In order to ensure the stability and cutting effect of the chain during operation, the tightness of the chain needs to be adjusted. In different cutting tasks, chains of different tightness may need to be used. For example, for harder materials, a tighter chain may be required to provide greater cutting force and stability; while for softer materials, a looser chain may be required to reduce the cutting resistance. Through adjusting the elasticity of chain, the staff can carry out nimble cutting adjustment according to actual demand to improve work efficiency and cutting quality.

Currently, there are some chain saw chain adjustment mechanisms on the market, but they have some drawbacks in fine adjustment and recording of chain position. Some mechanisms can only achieve coarse tightness adjustment, and cannot meet the requirement of accurately and finely adjusting the tightness of the chain. The tightness of the chain is changed, for example, by adjusting a tensioning screw or a take-up lever. However, due to the limited adjustment options, the user can only adjust the tightness of the chain according to experience or trial and error, and cannot accurately adjust the effect.

Furthermore, existing mechanisms often fail to record the adjusted chain position, which results in the need to readjust the chain tightness at the time of subsequent cuts, adding to the complexity and time costs of the operation. The user is required to spend additional time and effort finding the previously adjusted chain position in order to adjust the chain to the proper tightness. Such inconvenience limits the efficiency of use and ease of operation of the chain saw.

Disclosure of Invention

The application aims at: in order to solve the problems set forth in the background art, the present application provides a tensioning mechanism and a chain saw.

The application adopts the following technical scheme for realizing the purposes:

A tensioning mechanism comprising:

the carrier is horizontally and slidably provided with a moving seat, and the moving seat is rotatably provided with a chain wheel through a rotating shaft;

The driving mechanism comprises an adjusting rod rotatably mounted on the carrier, and a rotary transmission component acting on the movable seat is mounted on the carrier and used for converting the rotary motion of the adjusting rod into the micro sliding motion of the movable seat;

The linkage mechanism comprises a sliding piece which is slidably arranged on the carrier, the sliding piece acts on the adjusting rod, and when the adjusting rod rotates, the sliding piece slides on the carrier;

And the recording mechanism is arranged on the carrier and acts on the sliding part, and is used for recording the moving position of the sliding part, and when the sliding part moves to the recording position of the recording mechanism, the position of the sliding part is limited by the recording mechanism.

Further, the rotary transmission assembly comprises a pinion arranged on the adjusting rod, a fine tooth screw rod with threads penetrating through the movable seat is rotatably arranged on the carrier, and a large gear meshed with the pinion is arranged on the fine tooth screw rod.

Further, the sliding piece comprises a sliding block which is slidably arranged on the carrier, the sliding direction of the sliding block is parallel to the axis of the adjusting rod, a spiral guide groove is spirally formed in the peripheral side of the adjusting rod, a forcing rod with one end located in the spiral guide groove is constructed on the sliding block, and the recording mechanism acts on the sliding block.

Further, the recording mechanism comprises a strip-shaped groove formed in the carrier, a magnetic strip is arranged in the strip-shaped groove, the recording mechanism further comprises a connecting block, a magnetic sheet is arranged on one side of the connecting block, and the magnetic sheet is adsorbed on the magnetic strip.

Further, the knob is installed in one side rotation of sliding block, the top of connecting block is opened and vertical slip is inserted and is equipped with the limiting plate, the limiting plate with install conflict shell fragment between the connecting block is inside, a plane is cut out to the periphery side of knob, the knob is kept away from its planar position and is offered the confession the limiting groove that the limiting plate inserted.

Further, the carrier is rotatably provided with an L-shaped plate in a strip shape through a rod body, the L-shaped plate is used for shielding the connecting block, a torsion spring is sleeved on the rod body, one end of the torsion spring is connected with the L-shaped plate, and the other end of the torsion spring is connected with the carrier.

Further, the movable seat comprises a sliding seat and a driving block, wherein the sliding seat is arranged on the carrier in a sliding manner, the driving block is arranged on the carrier in a sliding manner, an internal thread hole is formed in the driving block in a horizontal manner, the driving block is sleeved with threads of the internal thread hole and is arranged on the fine tooth screw rod, an oil storage groove is formed in the top of the driving block, a plurality of oil inlet holes communicated with the internal thread hole are formed in the bottom of the oil storage groove along the length direction of the bottom of the oil storage groove, a threaded rod is rotatably arranged on the sliding seat, a positioning inserting plate is arranged on the sliding seat in a sliding manner in a threaded sleeve manner, a positioning slot for the insertion of the positioning inserting plate is formed in the driving block in a horizontal manner, a large gear is slidably arranged on the fine tooth screw rod, a limiting piece for limiting movement of the large gear is arranged on the large gear, and a locking component for limiting the sliding position of the sliding seat is arranged on the carrier.

Further, the one end construction of thin tooth screw rod has the rectangle piece, the gear wheel slip cap is established on the rectangle piece, the locating part is including installing mounting panel on the gear wheel, install a mounting cylinder on the mounting panel, the slip is inserted on the mounting cylinder and is equipped with the locating lever, two locating holes that supply the locating lever to insert to establish have been seted up to one side of rectangle piece, the locating lever is located one side construction in the mounting cylinder has the baffle, the baffle with install between the mounting cylinder and support tight spring.

Further, the locking assembly comprises two sliding plates which are symmetrically and slidably mounted on the carrier, limiting toothed plates are mounted on opposite sides of the two sliding plates, limiting springs are mounted between the sliding plates and the carrier, abutting plates are constructed on the sliding seat, limiting racks are constructed on two opposite sides of the length direction of the abutting plates, the two limiting toothed plates are respectively meshed with the two limiting racks, a moving block is mounted on the carrier in a sliding manner, two inclined planes are symmetrically constructed on one side of the moving block, wedge-shaped plates are arranged on two opposite sides of the moving block, and wedge-shaped grooves for inserting the wedge-shaped plates are formed in the sliding plates.

The application further provides a chain saw, which comprises the tensioning mechanism and further comprises a chain saw frame, wherein the carrier is arranged on the chain saw frame, a guide plate is arranged on the chain saw frame, a cutting chain is wound on the guide plate, the cutting chain is connected to the chain wheel in a transmission manner, an oil discharging barrel is arranged on the chain saw frame, an oil inlet pipe is communicated between the bottom of the oil discharging barrel and the driving block, the oil inlet pipe is communicated with an oil storage groove, a driving motor is arranged in the chain saw frame, and a universal joint is arranged between the driving motor and the rotating shaft.

The beneficial effects of the application are as follows:

Compared with the prior art, the application realizes small-amplitude movement of the movable seat by matching the rotating adjusting rod with the driving mechanism, changes the position of the chain wheel arranged on the movable seat, and realizes accurate adjustment of loosening of the chain.

Drawings

FIG. 1 is a schematic representation of the structure of the carrier of the present application;

FIG. 2 is a schematic view of the application from another perspective of FIG. 1;

FIG. 3 is a partial perspective exploded view of FIG. 1 in accordance with the present application;

FIG. 4 is a further partial perspective cross-sectional view of FIG. 1 in accordance with the present application;

FIG. 5 is a schematic view of the present application from another perspective than FIG. 4;

FIG. 6 is an enlarged view of the structure of FIG. 4A in accordance with the present application;

FIG. 7 is an enlarged view of the structure of FIG. 5B in accordance with the present application;

FIG. 8 is a schematic representation of the structure of the chain saw frame of the present application;

FIG. 9 is a perspective view showing the assembled application;

FIG. 10 is a partial perspective cross-sectional view of FIG. 9 in accordance with the present application;

FIG. 11 is an enlarged view of the structure of FIG. 10C in accordance with the present application;

Fig. 12 is an enlarged view of the structure of fig. 4D according to the present application.

Reference numerals: 1. a carrier; 2. a movable seat; 201. a slide; 202. a driving block; 203. an oil storage tank; 204. an oil inlet hole; 205. a threaded rod; 206. positioning the plugboard; 207. positioning the slot; 3. a recording mechanism; 301. a bar-shaped groove; 302. a magnetic strip; 303. a connecting block; 304. a magnetic sheet; 4. a rotary transmission assembly; 401. a pinion gear; 402. a fine tooth screw; 403. a large gear; 5. a slider; 501. a sliding block; 502. a spiral guide groove; 503. forcing the rod; 6. a knob; 7. a limiting plate; 8. a pressing spring plate; 9. a limit groove; 10. an L-shaped plate; 1001. a torsion spring; 11. a limiting piece; 1101. rectangular blocks; 1102. a mounting plate; 1103. a mounting cylinder; 1104. a positioning rod; 1105. positioning holes; 1106. a baffle; 1107. a spring is abutted tightly; 12. a locking assembly; 1201. a sliding plate; 1202. limiting toothed plates; 1203. a limit spring; 1204. an abutting plate; 1205. a limit rack; 1206. a mobilizing block; 1207. wedge plate; 1208. wedge-shaped grooves; 1209. an inclined plane; 13. a chain saw frame; 14. a sprocket; 15. a guide plate; 16. cutting the chain; 17. an oil discharge cylinder; 18. an oil inlet pipe; 19. a driving motor; 20. a universal joint; 21. an adjusting rod; 22. a guide rod; 23. a notch; 24. a convex plate; 24. and a limit stop bar.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

Example 1

As shown in fig. 1-12, one embodiment of the present application provides a tensioning mechanism comprising:

the carrier 1, the carrier 1 is horizontally and slidably provided with the movable seat 2, the carrier 1 is symmetrically and horizontally provided with two guide rods 22, the carrier 1 is slidably sleeved on the two guide rods 22, the functions of guiding and limiting are achieved, the movable seat 2 is rotatably provided with the chain wheel 14 through the rotating shaft, and the chain wheel 14 is used for being meshed with a chain;

The driving mechanism comprises an adjusting rod 21 rotatably mounted on the carrier 1, and a rotary transmission assembly 4 acting on the movable seat 2 is mounted on the carrier 1 and used for converting the rotary motion of the adjusting rod 21 into the micro sliding motion of the movable seat 2; that is, when the adjusting lever 21 rotates one turn, the moving seat 2 only moves a little distance, in this embodiment, after the adjusting lever 21 rotates one turn, the moving seat 2 moves 0.1 mm, and the existing chain saw can generally adjust the range between 0.5mm and 1.5 mm, so the precision is more precise than the existing adjusting mechanism, and when the adjusting lever 21 rotates slowly, the moving seat 2 can move a little by little, thereby realizing fine adjustment of the chain;

A linkage mechanism including a slider 5 slidably mounted on the carrier 1, the slider 5 acting on the adjustment lever 21, the slider 5 sliding on the carrier 1 when the adjustment lever 21 rotates; that is, when the adjustment lever 21 is rotated, the slider 5 is moved to a certain position of the carrier 1, and the position of the slider 5 is unique;

recording mechanism 3, install on carrier 1 and act on slider 5, it is used for recording slider 5 shift position, when slider 5 moves to recording mechanism 3 record position, it is spacing with slider 5 position through recording mechanism 3, when the position of sprocket 14 on the removal seat 2 is changed to needs removal seat 2, through rotating regulation pole 21, adjust pole 21 can make slider 5 remove on carrier 1 when rotating, move seat 2 through the actuating mechanism drive with the rotation of regulation pole 21, after moving seat 2 and moving suitable position, the position of slider 5 also confirms thereupon, at this moment, record slider 5's position through recording mechanism 3, at this moment when this elasticity is needed to cut corresponding material, at this moment only need rotate regulation pole 21, until spacing piece 11 moves to the position of record mechanism 3 back by recording mechanism 3 spacing, thereby stop rotating regulation pole 21, and with reaching the effect of quick regulation chain elasticity, compare with prior art, move seat 2 is moved through the cooperation actuating mechanism of rotating regulation pole 21 in order to realize the saw to the removal seat 2 by a small margin, change and install at the position of sprocket 2, can not be realized at this moment, can not be more convenient when the position is convenient and fast when the sprocket is cut through the sprocket is adjusted to the sprocket is moved to the position of sprocket 2, can not be adjusted to the speed, can be realized at this moment, when the position is convenient and the position is not can be adjusted to the speed when the sprocket is changed.

As shown in fig. 1-7, in some embodiments, the rotary transmission assembly 4 includes a pinion 401 mounted on the adjusting rod 21, the carrier 1 rotates a fine screw 402 with threads penetrating through the moving seat 2, and when the fine screw 402 rotates, the moving seat 2 in threaded engagement with the fine screw 402 moves by a small extent, the fine screw 402 provides more thread pitches, so that the displacement generated by each thread rotation is smaller, in this way, the user can more accurately adjust the position of the moving seat 2, a large gear 403 engaged with the pinion 401 is mounted on the fine screw 402, when the adjusting rod 21 rotates, the rotation of the adjusting rod 21 drives the pinion 401 to rotate, the rotation of the pinion 401 drives the engaged large gear 403 to rotate, and the rotation of the large gear 403 indirectly drives the fine screw 402 connected with the large gear 403 to rotate, so that the moving seat 2 in threaded engagement with the fine screw 402 moves, because the number of teeth on the pinion 401 is smaller than the number of teeth of the large gear 403, and thus has a higher transmission ratio, so that the fine screw 402 can more accurately and finely adjust the position of the fine screw 402 by amplifying the torque generated by the rotation of the adjusting rod 21 by each rotation of the large gear 403.

As shown in fig. 1-5 and 7, in some embodiments, the sliding part 5 includes a sliding block 501 slidably mounted on the carrier 1, the sliding direction of the sliding block 501 is parallel to the axis of the adjusting rod 21, specifically, a sliding groove is formed on the carrier 1, the sliding groove is parallel to the adjusting shaft rod, the sliding block 501 is slidably mounted in the sliding groove, a spiral guiding groove 502 is spirally formed on the outer peripheral side of the adjusting rod 21, a forcing rod 503 with one end located in the spiral guiding groove 502 is configured on the sliding block 501, when the adjusting rod 21 is rotated, the adjusting rod 21 moves to drive the spiral guiding groove 502 to move, the forcing rod 503 also moves along with the movement of the guiding groove, so that the sliding block 501 is forced to move horizontally, and when the adjusting rod 21 moves well, the recording mechanism 3 acts on the sliding block 501, so that the position of the sliding block 501 can be recorded through the recording mechanism 3, the adjusting rod 21 is conveniently rotated to a proper angle next time, the sliding block 501 can be horizontally moved, and the groove distance between the spiral guiding groove 502 is larger, so that when the adjusting rod 21 is finely adjusted, the sliding block 501 has a larger displacement, and the two kinds of problems of difficulty in identifying the position of the sliding block 501 are not easily observed.

As shown in fig. 2 and fig. 3, in some embodiments, the recording mechanism 3 includes a bar-shaped groove 301 formed on the carrier 1, a magnetic strip 302 is installed in the bar-shaped groove 301, the recording mechanism 3 further includes a plurality of connection blocks 303, the connection blocks 303 can be installed on one side of each connection block 303 according to the use requirement, the magnetic strips 304 are adsorbed on the magnetic strips 302, in this embodiment, when the positions of the connection blocks 501 need to be recorded after moving to the corresponding positions, one connection block 303 is adsorbed on the magnetic strips 302 through the magnetic strips 304, so that one side of each connection block 303 is attached to each connection block 501, when the subsequent connection blocks 501 need to be moved to the corresponding positions again, only the adjustment rod 21 is required to be rotated to drive each connection block 501 to move until each connection block 501 is attached to one side of each connection block 303, specifically, when the connection blocks 303 are moved well, the connection blocks 303 can be moved downwards, so that each connection block 303 is not moved with each connection block 501, then the positions of the connection blocks 501 are freely adjusted, when the corresponding positions of the connection blocks 501 need to be moved to the corresponding positions, and when the positions of the connection blocks 501 need to be moved to be required to be recorded, one side of each connection block 501 is adsorbed on each connection block 501, and the connection block 501 can not be freely moved.

As shown in fig. 3, fig. 4, fig. 6 and fig. 7, in some embodiments, knob 6 is installed in one side rotation of sliding block 501, the top of connecting block 303 is open and vertical slip is inserted and is equipped with limiting plate 7, specifically, notch 23 has been seted up to one side of connecting block 303, one side of connecting block 303 is constructed with the protruding board 24 that passes notch 23 and lie in outside, conveniently remove limiting plate 7, a plane is cut out to the periphery side of knob 6, when rotating knob 6 makes the plane when spacing plate 7 orientation, limiting plate 7 can not contact with knob 6 when sliding plate 1201 moves this moment, sliding block 501 can not influence the removal of connecting block 303 because of limiting plate 7's restriction, the spacing groove 9 that supplies limiting plate 7 to insert is seted up in the position of knob 6 to its plane, when sliding plate 1201 needs to remove on corresponding limiting plate 7, sliding plate 1201 moves to corresponding limiting plate 7 on the top earlier, then rotate knob 6, make notch 23 and limiting plate 7 relative to each other, thereby can make the position of notch 23 and limiting plate 7 can be contacted with each other after the limiting plate 7 in this process, and the position can be recorded on the relative position of limiting plate 7 after sliding plate 1201.

As shown in fig. 5 and 6, in some embodiments, in order to prevent the connection block 303 attached to the magnetic strip 302 and the connection limiting plate 7 from being accidentally touched to cause accidental movement, the carrier 1 is rotatably provided with an L-shaped plate 10 in a strip shape through a rod body, which is used for shielding the connection block 303 and the limiting plate 7, a torsion spring 1001 is sleeved on the rod body, one end of the torsion spring 1001 is connected with the L-shaped plate 10, the other end of the torsion spring 1001 is connected with the carrier 1, and in a normal state, the L-shaped plate 10 shields the connection block 303 and the limiting plate 7, and when the connection block 303 needs to be placed on the magnetic strip 302, only the L-shaped plate 10 needs to be rotated to expose the magnetic strip 302 to the outside.

As shown in fig. 3, 4 and 12, in some embodiments, the moving seat 2 includes a sliding seat 201 slidably mounted on the carrier 1 and a driving block 202 slidably mounted on the carrier 1, an internal threaded hole is horizontally provided on the driving block 202, the driving block 202 is sleeved on the fine screw 402 through the internal threaded hole, an oil storage groove 203 is provided at the top of the driving block 202, a plurality of oil inlet holes 204 communicating with the internal threaded hole are provided at the bottom of the oil storage groove 203 along the length direction thereof, that is, when the fine screw 402 is relatively blocked in use, lubricating oil can be poured into the oil storage groove 203, the lubricating oil can enter the oil inlet holes 204 due to the action of gravity and then enter the internal threaded hole, at this time, the fine screw 402 is rotated to enable the driving block 202 to move horizontally to perform oil feeding lubrication on the fine screw 402, the lubricating oil can directly flow into the screw grooves of the fine screw 402, further improves the lubrication effect, the threaded rod 205 is rotatably arranged on the sliding seat 201, the positioning inserting plate 206 which is slidably inserted on the sliding seat 201 is sleeved on the threaded rod 205, the positioning inserting slot 207 for inserting the positioning inserting plate 206 is horizontally arranged on the driving block 202, the large gear 403 is slidably arranged on the fine tooth screw rod 402, the limiting piece 11 for limiting the movement of the large gear 403 is arranged on the large gear 403, the locking component 12 for limiting the sliding position of the sliding seat 201 is arranged on the carrier 1, when the fine tooth screw rod 402 needs to be oiled, the fine tooth screw rod 402 needs to be rotated, in order to prevent the rotation of the fine tooth screw rod 402 from influencing the tightness of the chain, the threaded rod 205 can be rotated at this time, the threaded rod 205 rotates to further enable the positioning inserting plate 206 which is in threaded fit with the threaded rod 205 to move, the positioning inserting plate 206 moves away from the positioning inserting slot 207, then the large gear 403 is moved through the limiting piece 11, the large gear 403 and the small gear 401 are not meshed any more, the sliding seat 201 is prevented from moving at this time, the sliding position of the sliding seat 201 needs to be limited together through the locking component 12, then the fine tooth screw 402 is rotated, the driving block 202 is further moved along the axis of the fine tooth screw 402, the purpose of oiling is achieved, after the fine tooth screw 402 is oiled, the driving block 202 is moved to the position, opposite to the positioning inserting groove 207 and the positioning inserting plate 206, of the positioning inserting plate 206 is inserted into the positioning inserting groove 207, connection between the sliding seat 201 and the driving block 202 is achieved, limiting of the sliding position is removed through the locking component 12, the large gear 403 is moved to the position meshed with the small gear 401, the oiling effect of the fine tooth screw 402 is improved, deviation of the position recorded by the recording mechanism 3 is not easy to occur, and the tension degree of a chain is not easy to be influenced.

As shown in fig. 4 and 12, in some embodiments, one end of the fine screw 402 is configured with a rectangular block 1101, the large gear 403 is slidably sleeved on the rectangular block 1101, when the large gear 403 rotates, the rectangular block 1101 drives the fine screw 402 to rotate, the limiting member 11 includes a mounting plate 1102 mounted on the large gear 403, a mounting cylinder 1103 is mounted on the mounting plate 1102, a positioning rod 1104 is slidably inserted into the mounting cylinder 1103, two positioning holes 1105 for inserting the positioning rod 1104 are formed in one side of the rectangular block 1101, when the positioning rod 1104 is inserted into one of the positioning holes 1105, as shown in fig. 1, the large gear 403 is in an engaged state with the small gear 401, and when the large gear 403 moves to enable the positioning rod 1104 to be inserted into the other positioning hole 1105, the large gear 403 and the small gear 401 at the moment are not engaged any more, a baffle 1106 is formed on one side of the positioning rod 1104 located in the mounting cylinder 1103, a tight spring is mounted between the baffle 1106 and the mounting cylinder 1103, and after the positioning rod 1107 is inserted into the positioning hole 1107, the positioning rod 1105 is effectively prevented from being separated from the corresponding positioning hole 1105 by the tight spring, and the positioning rod 1105 is prevented from being accidentally separated from the positioning hole 1 when the positioning rod is prevented from being used.

As shown in fig. 4,5 and 12, in some embodiments, the locking assembly 12 includes two sliding plates 1201 symmetrically and slidably mounted on the carrier 1, limiting toothed plates 1202 are mounted on opposite sides of the two sliding plates 1201, limiting springs 1203 are mounted between the sliding plates 1201 and the carrier 1, an abutting plate 1204 is configured on the sliding base 201, limiting racks 1205 are configured on both lengthwise sides of the abutting plate 1204, the two limiting toothed plates 1202 are respectively meshed with the two limiting racks 1205, that is, the abutting plate 1204 is located between the two limiting toothed plates 1202, a maneuvering block 1206 is slidably mounted on the carrier 1, two inclined surfaces 1209 are symmetrically configured on one side of the maneuvering block 1206, wedge plates 1207 are opened on opposite sides of the maneuvering block 1206, wedge grooves for inserting the wedge plates 1207 are opened on the sliding plates 1201, when the position of the sliding base 201 needs to be limited, only the maneuvering block 1208 needs to be moved at this time, the regulating block 1206 moves to form two inclined planes 1209 to be respectively contacted with the two sliding plates 1201, so that the two sliding plates 1201 are far away from each other, thus the two sliding plates 1201 do not need to be manually moved, the two sliding plates 1201 are far away from each other, so that the corresponding limiting toothed plates 1202 move, the limiting toothed plates 1202 move away from the corresponding limiting racks 1205 to release the limitation of the opposite plates 1204, at the moment, the limiting toothed plates 1202 continue to move, so that the wedge-shaped plates 1207 are inserted into the wedge-shaped grooves 1208, in particular, the carrier 1 is provided with the limiting stop bars 24, when the wedge-shaped plates 1207 are inserted into the wedge-shaped grooves 1208, one side of the regulating block 1206 is contacted with the limiting stop bars 24, so that the limiting effect is achieved, and if the regulating block 1206 is pulled, the movement of the regulating block 1206 is limited because the plane of the wedge-shaped grooves 1208 is in conflict with the plane of the wedge-shaped plates 1207, the inclined surface 1209 of the wedge plate 1207 and the inclined surface 1209 of the wedge groove 1208 are used to facilitate moving the movement block 1206 between the two sliding plates 1201, and the inclined surface 1209 of the wedge plate 1207 contacts the sliding plates 1201, so that the two sliding plates 1201 can be kept away from each other, and the sliding plates 1201 do not need to be moved.

Example two

As shown in fig. 1-12, the application further provides a chain saw, including the tensioning mechanism, further including the chain saw frame 13, carrier 1 is installed on chain saw frame 13, install baffle 15 on chain saw frame 13, around being equipped with cutting chain 16 on the baffle 15, cutting chain 16 transmission connection is on sprocket 14, install the oil storage tube 17 on chain saw frame 13, communicate between oil storage tube 17 bottom and the drive piece 202 and have oil inlet tube 18, oil inlet tube 18 communicates with oil storage tank 203, install driving motor 19 in chain saw frame 13, install universal joint 20 between driving motor 19 and the pivot, the setting of universal joint 20 makes driving piece 202 after moving, the output shaft rotation of driving motor 19 can normally be transmitted rotary drive force to sprocket 14 through universal joint 20, sprocket 14 rotates and drives cutting chain 16 to move, in order to realize the chain and cut, oil inlet tube 18 is flexible rubber tube, and lie in cutting chain 16 below, oil inlet tube 18 has guaranteed that oil inlet tube 18 can normally move and keep in the oil storage tank 203 when the drive piece 202 has moved, oil inlet tube 17 is located outside, tip and is located outside and is set up in oil storage tank 203 through inserting the tip and is in 203 and is had a slope to the oil storage tank 203 to the convenient place, thereby the injection can be prevented from accumulating in the oil storage tank 203, the preferred both sides.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. A tensioning mechanism, comprising:

The carrier (1), the horizontal sliding of the said carrier (1) is fitted with the movable seat (2), the said movable seat (2) rotates and installs the sprocket (14) through the spindle;

The driving mechanism comprises an adjusting rod (21) rotatably mounted on the carrier (1), and a rotary transmission assembly (4) acting on the movable seat (2) is mounted on the carrier (1) and is used for converting the rotary motion of the adjusting rod (21) into the micro sliding motion of the movable seat (2);

The linkage mechanism comprises a sliding piece (5) which is slidably arranged on the carrier (1), the sliding piece (5) acts on the adjusting rod (21), and when the adjusting rod (21) rotates, the sliding piece (5) slides on the carrier (1);

A recording mechanism (3) mounted on the carrier (1) and acting on the sliding member (5) for recording the moving position of the sliding member (5), when the sliding member (5) moves to the recording position of the recording mechanism (3), the sliding member (5) is limited by the recording mechanism (3), the rotary transmission assembly (4) comprises a pinion (401) mounted on the adjusting rod (21), a fine tooth screw (402) with threads penetrating through the moving seat (2) is rotatably mounted on the carrier (1), a large gear (403) meshed with the pinion (401) is mounted on the fine tooth screw (402), the sliding member (5) comprises a sliding block (501) slidably mounted on the carrier (1), the sliding direction of the sliding block (501) is parallel to the axis of the adjusting rod (21), a spiral guide groove (502) is spirally formed on the outer circumferential side of the adjusting rod (21), a forcing rod (503) with one end positioned in the spiral guide groove (502) is formed on the sliding block (501), the bar-shaped recording mechanism (301) is formed on the carrier (1), the bar-shaped recording mechanism (301) is formed on the carrier (3), the recording mechanism (3) further comprises a connecting block (303), a magnetic sheet (304) is arranged on one side of the connecting block (303), the magnetic sheet (304) is adsorbed on the magnetic strip (302), a knob (6) is rotatably arranged on one side of a sliding block (501), the top of the connecting block (303) is provided with an opening and a limiting plate (7) in a vertical sliding insertion mode, an abutting elastic sheet (8) is arranged between the limiting plate (7) and the inside of the connecting block (303), the outer periphery side of the knob (6) is cut out of a plane, a limit groove (9) for inserting the limiting plate (7) is formed in the position, away from the plane, of the knob (6), the moving seat (2) comprises a sliding seat (201) which is slidably arranged on the carrier (1) and a driving block (202) which is slidably arranged on the carrier (1), the driving block (202) is horizontally provided with an internal threaded hole, the driving block (202) is sleeved on the threaded screw (402) through the internal threaded hole, the top (202) is provided with a plurality of oil inlet holes (203) which are formed in the direction of the bottom of the threaded groove (203), the utility model discloses a device for positioning baffle plate (1107), including slider (201), drive block (202) are installed in threaded rod (205), threaded rod (205) are gone up the thread bush and are equipped with the slip and insert locating picture peg (206) of establishing on slider (201), the confession has been seted up to the level on drive block (202) locating slot (207) that locating picture peg (206) were inserted, gear wheel (403) slidable mounting is in on thin tooth screw rod (402), install on gear wheel (403) spacing locating part (11) that gear wheel (403) removed, install on carrier (1) and be used for spacing locking component (12) of slider (201) sliding position, one end of thin tooth screw rod (402) is constructed with rectangle piece (1101), gear wheel (403) sliding bush is established on rectangle piece (1101), locating part (11) are including installing mounting panel (1102) on gear wheel (403), install mounting cylinder (1103) on mounting cylinder (1103), install locating rod (1106) on the mounting cylinder (1103) the one side of installing cylinder (1104) and being equipped with locating rod (1104) and inserting, locating rod (1105) are equipped with two and install in one side between baffle plate (1107).

2. The tensioning mechanism according to claim 1, characterized in that the carrier (1) is rotatably provided with an L-shaped plate (10) in a bar shape through a rod body, the L-shaped plate is used for shielding the connecting block (303), a torsion spring (1001) is sleeved on the rod body, one end of the torsion spring (1001) is connected with the L-shaped plate (10), and the other end of the torsion spring (1001) is connected with the carrier (1).

3. The tensioning mechanism according to claim 1, characterized in that the locking assembly (12) comprises two sliding plates (1201) which are symmetrically and slidably mounted on the carrier (1), two limiting toothed plates (1202) are mounted on opposite sides of the two sliding plates (1201), limiting springs (1203) are mounted between the sliding plates (1201) and the carrier (1), a butt plate (1204) is constructed on the sliding base (201), limiting racks (1205) are constructed on two lengthwise sides of the butt plate (1204), two limiting toothed plates (1202) are respectively meshed with the two limiting racks (1205), a regulating block (1206) is slidably mounted on the carrier (1), two inclined planes (1209) are symmetrically constructed on one side of the regulating block (1206), wedge plates (1207) are formed on opposite sides of the regulating block (1206), and wedge grooves (1208) for inserting the wedge plates (1207) are formed on the sliding plates (1201).

4. A chain saw comprising the tensioning mechanism according to any one of claims 1-3, further comprising a chain saw frame (13), wherein the carrier (1) is mounted on the chain saw frame (13), a guide plate (15) is mounted on the chain saw frame (13), a cutting chain (16) is wound on the guide plate (15), the cutting chain (16) is in transmission connection with the chain wheel (14), an oil discharging cylinder (17) is mounted on the chain saw frame (13), an oil inlet pipe (18) is communicated between the bottom of the oil discharging cylinder (17) and the driving block (202), the oil inlet pipe (18) is communicated with an oil storage groove (203), a driving motor (19) is mounted in the chain saw frame (13), and a universal joint (20) is mounted between the driving motor (19) and the rotating shaft.