A chain saw assembly

Abstract

This invention discloses a chainsaw assembly, including a guide plate and a saw chain. The guide plate has a guide groove, and the saw chain is arranged in the guide groove to rotate around the periphery of the guide plate. The saw chain includes a drive plate and a connecting plate connected in a rotatable manner end to end, and a blade located on the side of the drive plate. The key feature is that the drive plate is inserted into the guide groove, and the bottom of the drive plate has a friction part that contacts and slides with the bottom of the guide groove. This invention can effectively extend the service life of the saw chain and the guide plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chain saw, in particular to a chain saw assembly BACKGROUND

[0002] Chain saw is also called oil saw, which is a hand-held saw (cutter) powered by a gasoline engine, mainly used for logging and timber production. Its working principle is to perform shearing action by the transverse movement of the staggered L-shaped blades on the saw chain.

[0003] The chain saw assembly generally includes a saw chain and a guide plate, and the saw chain includes a driving link, a connecting link and a blade. The specific structure of the chain saw assembly is disclosed in the following patents: "Patent No. 202220055847X, Patent Name: Saw Chain and Lithium Battery Saw Suitable for Lithium Battery Saw", "Patent No. 202110694940.5, Patent Name: Electric Chain Saw Assembly", "Patent No. 2020102854011, Patent Name: Saw Chain Connecting Link, Saw Chain and Saw Chain Transmission System", and "Patent No. 202010256289.9, Patent Name: Light Lithium Battery Special Saw Chain".

[0004] During the operation of the saw chain, it needs to rotate around the guide plate at high speed, so the connecting part between the saw chain and the guide plate will be worn out, which will affect the cutting efficiency when it is severely worn out. Therefore, in addition to the wear of the blade, the wear between the saw chain and the guide plate also affects the service life of the whole saw chain. SUMMARY

[0005] The purpose of the present application is to solve the problems in the prior art and to provide a chain saw assembly and a cutting machine that can effectively prolong the service life of the saw chain assembly.

[0006] The technical solution adopted by the present application to solve the above technical problems is as follows:

[0007] A chain saw assembly, comprising a guide plate and a saw chain, wherein the guide plate is provided with a guide plate groove, and the saw chain is arranged at the guide plate groove to rotate around the periphery of the guide plate, the saw chain comprises a driving link and a connecting link connected in sequence, and a blade located on the side of the driving link; characterized in that: the guide plate is a metal guide plate; the driving link is inserted into the guide plate groove of the metal guide plate, and the bottom of the driving link is provided with a friction part which is in contact with and slidingly matched with the bottom of the guide plate groove.

[0008] As a preferred embodiment, the two driving links are connected by connecting links located on their two sides; the connecting link is provided with a support part which is suspended above the guide plate, and a gap is left between the support part of the connecting link and the surface of the metal guide plate during installation; when the bottom of the driving link and the bottom of the guide plate groove of the metal guide plate are worn by sliding, the driving link sinks and the support part on the connecting link rests on the surface of the metal guide plate and forms a sliding match with the surface of the metal guide plate.

[0009] As preferred: the contact surface between the friction part and the bottom surface of the guide plate groove is a plane or an arc surface. The plane or arc surface can make the sliding of the transmission sheet and the bottom of the guide plate groove more smooth.

[0010] As preferred: the two ends of the friction part on the transmission sheet are respectively provided with a chamfer, and the radius of the chamfer is 0.1-10 mm.

[0011] As preferred: the top end of the transmission sheet is provided with an upward protruding limiting block, and the height of the limiting block is lower than the height of the blade. In this scheme, a limiting block is arranged on each transmission sheet.

[0012] As preferred: the top end of any transmission sheet connected with the same connecting sheet is provided with an upward protruding limiting block, and the height of the limiting block is lower than the height of the blade. Since the upward protruding limiting block is arranged on the transmission sheet, the first is to increase the production process, the second is to increase the production difficulty, and the third is to increase the manufacturing cost. In this scheme, one of the two transmission sheets connected with the same connecting sheet is provided with a limiting block, so that the manufacturing cost can be reduced, and it is not necessary to arrange an upward protruding limiting block on each transmission sheet. When producing, only the transmission sheet with a limiting block needs to be produced.

[0013] As preferred: the blade includes a left blade and a right blade, and the left blade and the right blade are alternately arranged on the two sides of the transmission sheet.

[0014] As preferred: the depth of the guide plate groove of the metal guide plate is 3.16 mm.

[0015] As preferred: the distance between the connecting sheet and the surface of the metal guide plate is 0-1 mm. The distance represents the distance between the connecting sheet and the surface of the guide plate in the first working state (i.e. the initial state).

[0016] As preferred: the connecting sheet is arranged in a central complete symmetry structure, which is consistent on the left and right and up and down, and each lower side is provided with a concave arc. The beneficial effects of the present application are:

[0017] The chain saw assembly in the present application includes two working states:

[0018] The first working state (also the initial working state), in the first working state, the friction part arranged at the bottom of the transmission sheet is in contact and sliding cooperation with the bottom of the guide plate groove, so as to realize the rotation of the saw chain around the circumference of the guide plate. In the first working state, the friction part at the bottom of the transmission sheet is in contact with the metal guide plate as the force point between the saw chain and the guide plate when the saw chain rotates around the circumference of the guide plate.

[0019] The second working state is started after the friction part at the bottom of the transmission sheet is worn to a certain extent. Since the friction part is worn, the transmission sheet sinks, the connecting sheet connected to the transmission sheet is lowered, the support part at the connecting sheet forms a sliding fit with the peripheral surface of the guide plate, and starts to bear as the second stress point between the guide plate when the saw chain rotates around the peripheral surface of the guide plate. The second working state is formed in which the friction part of the transmission sheet and the support part of the connecting sheet form a sliding fit with the guide plate.

[0020] Wherein when the support part forms a sliding fit with the peripheral surface of the guide plate, the friction part is still in contact with the bottom of the guide plate groove for friction, and the transmission sheet is provided with a connecting sheet on both sides, so that the peripheral surface of the left and right sides of the guide plate is subjected to sliding friction of the support part, so that three parties are formed in the second working state. The sliding friction of the support part reduces the friction between the friction part and the bottom of the guide plate groove, so that the friction part and the guide plate groove can be used for a longer time.

[0021] Through the above two working states, after the friction part is worn to a certain extent in the first working state, the second working state is entered to reduce and bear the friction between the support part and the guide plate by the support part, so that the support part and the guide plate groove can be used for a longer time, and the service life of the saw chain assembly is prolonged.

[0022] Meanwhile, the friction part and the support part can also be made of a friction-resistant material to further prolong the service life. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic view of the guide plate structure of the present application;

[0024] Figure 2 It is a schematic view of the side structure of the guide plate of the present application;

[0025] Figure 3 It is a schematic view of the saw chain structure of the present application;

[0026] Figure 4 It is a schematic view of the first transmission sheet structure of the present application;

[0027] Figure 5 It is a schematic view of the second transmission sheet structure of the present application;

[0028] Figure 6 It is a schematic view of the connecting sheet structure of the present application;

[0029] Figure 7 It is a schematic view of the structure of the saw chain when it is arranged on the guide plate of the present application;

[0030] Figure 8 It is a schematic view of the side structure of the saw chain when it is arranged on the guide plate of the present application in the first working state;

[0031] Figure 9 Fig. 2 is a schematic view of the structure of the chain saw assembly according to the present application.

[0032] In the figure: 1 metal guide plate, 11 guide plate groove, 2 transmission piece, 21 friction part, 22 limiting block, 3 connecting piece, 31 supporting part, 4 blade, 5 chain shaft hole, 6 gap. DETAILED DESCRIPTION

[0033] The present application will be further described below in conjunction with the accompanying drawings:

[0034] Example 1:

[0035] As shown in the figure, the present embodiment provides a chain saw assembly, which comprises a metal guide plate 1 and a saw chain, the metal guide plate 1 is provided with a guide plate groove 11, and the saw chain is arranged at the guide plate groove 11 to rotate around the periphery of the metal guide plate 1. Figures 1-9 Among them, the transmission piece 2 is inserted into the guide plate groove 11, and the bottom of the transmission piece 2 is provided with a friction part 21, which is in contact and sliding fit with the bottom of the guide plate groove 11 to realize the arrangement of the saw chain at the guide plate groove 11 and the rotation around the periphery of the metal guide plate 1.

[0036] Figure 4 As shown in the figure, the contact surface between the friction part 21 at the bottom of the transmission piece 2 and the groove bottom surface of the guide plate groove 11 is a plane (which can also be an arc surface), and the two ends of the friction part 21 are respectively provided with chamfers, the radius of the chamfer is R1.00mm, and the above-mentioned structure of the transmission piece 2 can make the transmission piece 2 and the bottom of the guide plate groove 11 slide more smoothly, and at the same time avoid excessive friction between the friction part 21 and the bottom of the guide plate groove 11, so that the friction part 21 is not worn too fast and thus affects the service life of the chain saw assembly.

[0037] Among them, the two transmission pieces 2 are connected through the connecting pieces 3 located on their two sides; the connecting piece 3 is arranged in a completely symmetrical structure around the center, which is consistent on the left and right and up and down, and each of the lower edges is provided with a concave arc. The connecting piece 3 is suspended above the metal guide plate 1, and the bottom is provided with a supporting part 31, and when installed, the gap 6 is left between the supporting part 31 and the surface of the metal guide plate 1.

[0038] Through the above-mentioned friction part 21 on the transmission piece 2 and the guide plate groove 11, the bottom of which is in contact and sliding fit, and at the same time the supporting part 31 on the connecting piece 3 is not in contact with the periphery surface of the metal guide plate 1, forming the first working state, which is also the initial working state of the saw chain installed on the metal guide plate 1.

[0039] ​After the first working state continues to work until the friction part 21 at the bottom of the transmission piece 2 is worn to a certain extent, the transmission piece 2 sinks and the supporting part 31 on the connecting piece 3 is in abutment with and in sliding fit with the surface of the metal guide plate 1. At this time, the second working state is entered, in which the friction part 21 is still in contact with and in sliding fit with the bottom of the guide plate groove 11, and the supporting part 31 at the bottom of the connecting piece 3 is in sliding fit with the peripheral surface of the metal guide plate 1. Since the transmission piece 2 is provided with the connecting piece 3 on both sides, the connecting pieces 3 on both sides are in sliding fit with the peripheral surface of the metal guide plate 1. Therefore, in the second working state, a three-party force bearing situation is formed, and the saw chain and the metal guide plate 1 are shared by three parties. In this way, the force is shared by three parties, and the sliding friction between the friction part 21 at the bottom of the transmission piece 2 and the bottom of the guide plate groove 11 is further reduced. The transmission piece 2 and the guide plate groove 11 can be used for a longer time, and the service life of the chain saw assembly is prolonged through the above two working states.

[0040] In actual production and installation, the depth of the guide plate groove 11 can be 3.16 mm, the gap 6 between the supporting part 31 at the bottom of the connecting piece 3 and the surface of the metal guide plate 1 can be 0.51 mm, and the chamfer radius at both ends of the friction part 21 at the bottom of the transmission piece 2 can be R1.00 mm.

[0041] In order to control the cutting depth of the blade 4 in the actual working of the saw chain assembly, a limiting block 22 protruding upward is arranged at the top end of the transmission piece 2, and the height of the limiting block 22 is lower than the height of the blade 4. Specifically, the highest point of the limiting block 22 in the vertical height is lower than the height of the cutting edge of the blade 4. It should be noted that the transmission piece 2 can have two structures, the first transmission piece 2 does not have the limiting block 22, and the second transmission piece 2 has the limiting block 22. When installed into the saw chain, there are also two schemes, the first scheme is that all the transmission pieces 2 on the saw chain are provided with the limiting block 22. The second scheme is that the limiting block 22 protruding upward is arranged at the top end of any transmission piece 2 connected to the same connecting piece 3. That is, one of the two transmission pieces 2 connected to the same connecting piece 3 is provided with the limiting block 22, and the other is not provided with the limiting block 22. Since the limiting block 22 protruding upward is arranged on the transmission piece 2, the production process is increased, the production difficulty is increased, and the manufacturing cost is increased. In this scheme, one of the two transmission pieces 2 connected to the same connecting piece 3 is provided with the limiting block 22. In this way, the manufacturing cost can be reduced, and it is not necessary to arrange a limiting block 22 protruding upward on each transmission piece 2. When produced and manufactured, only the limiting block 22 protruding upward needs to be produced and manufactured.

[0042] It should be noted that in actual installation, the two transmission pieces 2 are connected by the connecting pieces 3, and the connecting pieces 3 are connected on both sides of the transmission piece 2, and the transmission piece 2 and the connecting piece 3 are connected by the chain shaft, wherein the blade 4 includes the left blade 4 and the right blade 4, the left blade 4 and the right blade 4 are alternately arranged on both sides of the transmission piece 2, and it should be noted that the left blade 4 and the right blade 4 are not continuously arranged, and the left blade 4 and the right blade 4 are alternately arranged by at least one connecting piece 3, and the chain shaft hole 5 is arranged on the connecting part of the transmission piece 2 in actual installation, and the transmission piece 2 and the connecting piece 3, and the transmission piece 2 and the blade 4 are connected by the chain shaft.

[0043] Example two:

[0044] The difference between this embodiment and example one is that: in order to install in actual production, the depth of the guide plate groove 11 can be 3.16mm, the gap 6 between the support part 31 at the bottom of the connecting piece 3 and the surface of the metal guide plate 1 can be 0.1mm, and the chamfer radius of the two ends of the friction part 21 at the bottom of the transmission piece 2 can be R0.1mm.

[0045] Example three:

[0046] The difference between this embodiment and example one is that: in order to install in actual production, the depth of the guide plate groove 11 can be 3.16mm, the gap 6 between the support part 31 at the bottom of the connecting piece 3 and the surface of the metal guide plate 1 can be 1mm, and the chamfer radius of the two ends of the friction part 21 at the bottom of the transmission piece 2 can be R10mm.

[0047] The above examples are descriptions of the present application, not limitations of the present application, and any simple transformation of the present application belongs to the protection scope of the present application.

Claims

1. A chainsaw assembly, comprising a guide plate and a saw chain, wherein the guide plate has a guide plate groove, and the saw chain is arranged in the guide plate groove to rotate around the periphery of the guide plate, the saw chain comprising a drive plate and a connecting plate connected in a rotatable manner end to end, and a blade located on the side of the drive plate; characterized in that: The guide plate is a metal guide plate; the transmission plate is inserted into the guide plate groove of the metal guide plate, and the bottom of the transmission plate is provided with a friction part, which contacts and slides with the bottom of the guide plate groove; The two transmission plates are connected by connecting plates located on both sides of them; the connecting plates are provided with support parts, which are suspended above the guide plate, and a gap is left between the support parts at the connecting plates and the surface of the metal guide plate during installation; When the bottom of the transmission plate slides and wears against the bottom of the guide groove of the metal guide plate, the transmission plate sinks down and, along with the support part on the connecting plate, rests against the surface of the metal guide plate and forms a sliding fit with the surface of the metal guide plate.

2. A chainsaw assembly according to claim 1, characterized in that: The contact surface between the friction part and the bottom surface of the guide groove of the metal guide plate is a plane or an arc surface.

3. A chainsaw assembly according to claim 1, characterized in that: The friction part on the transmission plate is provided with chamfers at both ends, and the radius of the chamfer is 0.1-10mm.

4. A chainsaw assembly according to claim 1, characterized in that: The top of the transmission plate is provided with an upwardly protruding limiting block, the height of which is lower than the height of the blade.

5. A chainsaw assembly according to claim 1, characterized in that: Each transmission plate connected to the same connecting plate has an upwardly protruding limiting block at its top, the height of which is lower than the blade height.

6. A chainsaw assembly according to claim 1, characterized in that: The blade includes a left blade and a right blade, which are arranged alternately on both sides of the transmission plate.

7. A chainsaw assembly according to claim 1, characterized in that: The depth of the guide groove of the metal guide plate is 3.16 mm.

8. A chainsaw assembly according to claim 1, characterized in that: The distance between the connecting piece and the surface of the metal guide plate is 0-1mm.

9. A chainsaw assembly according to claim 1, characterized in that: The connecting pieces are arranged in a completely symmetrical manner, consistent on the left, right, top, and bottom, with a concave arc on each of the lower sides.

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