CN-115868308-B - Work machine

Abstract

The invention provides a work machine. The work machine suppresses movement of the object to be cut to the power conversion mechanism. The working machine includes a prime mover, a power conversion mechanism that converts power of the prime mover, a 1 st blade that is connected to the power conversion mechanism, a 2 nd blade that overlaps the 1 st blade in an up-down direction and faces a 1 st facing surface of the 1 st blade, a seal member that is engaged with a 1 st non-facing surface of the 1 st blade on a side opposite to the 1 st facing surface, has a 1 st seal surface that faces the 1 st non-facing surface of the 1 st blade in the up-down direction, and a cover member that faces a 2 nd seal surface of the seal member on a side opposite to the 1 st seal surface. The 1 st blade reciprocates in the 1 st direction with respect to the 2 nd blade. The seal member is disposed on the front side of the power conversion mechanism in the front-rear direction orthogonal to the up-down direction, and suppresses movement of the object to be cut, which is cut by the 1 st blade and the 2 nd blade, between the 1 st blade and the cover member toward the power conversion mechanism.

Inventors

• Dashi Huangping
• KUTSUNA TOMOYUKI
• IIO TAKAYOSHI

Assignees

• 株式会社牧田

Dates

Publication Date

20260512

Application Date

20220809

Priority Date

20210929

Claims (5)

1. 1. A work machine, wherein, The work machine includes: A prime mover; a power conversion mechanism for converting power of the prime mover; a1 st blade connected to the power conversion mechanism; A2 nd blade overlapping the 1 st blade in the up-down direction and opposing the 1 st opposing surface of the 1 st blade; A seal member that is engaged with a1 st non-opposing surface of the 1 st blade on the opposite side of the 1 st opposing surface, has a1 st sealing surface that opposes the 1 st non-opposing surface of the 1 st blade in the up-down direction, and A cover member opposed to a 2 nd seal surface of the seal member on an opposite side of the 1 st seal surface, The 1 st blade is provided with a1 st blade, The 2 nd blade is provided with a2 nd blade, Reciprocating the 1 st blade relative to the 2 nd blade in a1 st direction using the power of the prime mover, When the work machine moves forward in the front-rear direction orthogonal to the up-down direction in a state where the 1 st blade reciprocates relative to the 2 nd blade, the 1 st blade of the 1 st blade and the 2 nd blade of the 2 nd blade cut the object to be cut, The sealing member is disposed on a front side of the power conversion mechanism in the front-rear direction, suppresses movement of the object to be cut by the 1 st blade of the 1 st blade and the 2 nd blade of the 2 nd blade toward the power conversion mechanism between the 1 st blade and the cover member, The sealing member reciprocates along the 1 st direction together with the 1 st blade, The cover member defines a crank chamber in which the upper and lower discs of the power conversion mechanism are disposed, The cover member includes a discharge port that communicates the crank chamber with an external space of the work machine, An inlet of the discharge port is disposed at a position facing the seal member in the 1 st direction.
2. 2. The work machine of claim 1, wherein, An outlet of the discharge port is arranged at a position opposite to the inlet of the discharge port in the 1 st direction.
3. 3. The work machine of claim 1, wherein, The cover member includes a grease guard disposed at a position on a rear side of the discharge port in the front-rear direction, and suppresses movement of grease.
4. 4. The work machine of claim 2, wherein, The cover member includes a grease guard disposed at a position on a rear side of the discharge port in the front-rear direction, and suppresses movement of grease.
5. 5. The working machine according to any one of claims 1 to 4, wherein, The cover member includes a protruding wall extending toward the 1 st non-opposing surface of the 1 st blade and disposed on a front side of the seal member, The protruding wall at least partially overlaps the sealing member when the work machine is viewed in the front-rear direction.

Description

Work machine Technical Field The present invention relates to a work machine. Background Patent document 1 discloses a blade unit. The blade unit includes a1 st blade, a2 nd blade overlapping the 1 st blade in an up-down direction and opposing a1 st opposing surface of the 1 st blade, a doctor blade that is caught by the 1 st opposing surface of the 1 st blade, and a guide member overlapping the 2 nd blade on an opposite side of the 2 nd blade with respect to the 2 nd blade in the up-down direction. The guide member has a soil outlet penetrating in the vertical direction. When the 1 st blade reciprocates in the 1 st direction with respect to the 2 nd blade, the doctor blade also reciprocates in the 1 st direction with respect to the 2 nd blade. As the scraper reciprocates in the 1 st direction relative to the 2 nd blade, foreign matter (e.g., earth) between the 1 st blade and the guide member is pushed out by the scraper in the 1 st direction and discharged from between the 1 st blade and the guide member via the earth outlet. Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 7-274649 Disclosure of Invention Problems to be solved by the invention In the case where the blade unit as described above is used in a work machine (e.g., a lawnmower) equipped with a power conversion mechanism, the blade unit is connected to the front side of the power conversion mechanism, for example. When the object to be cut such as grass or lawn is cut by the 1 st blade and the 2 nd blade, most of the object to be cut is pushed out by the blade in the direction along the 1 st direction along with the reciprocating movement of the blade. But a portion of the cut object may move over the blade to the power conversion mechanism. In the present specification, a technique capable of suppressing movement of a cut object to a power conversion mechanism is disclosed. Solution for solving the problem The work machine disclosed in the present specification includes a prime mover, a power conversion mechanism for converting power of the prime mover, a1 st blade connected to the power conversion mechanism, a 2 nd blade overlapping the 1 st blade in an up-down direction and facing a1 st facing surface of the 1 st blade, a seal member that is engaged with a1 st non-facing surface of the 1 st blade on a side opposite to the 1 st facing surface, has a1 st seal surface facing the 1 st non-facing surface of the 1 st blade in the up-down direction, and a cover member facing a 2 nd seal surface of the seal member on a side opposite to the 1 st seal surface. The 1 st blade has a1 st blade edge. The 2 nd blade has a 2 nd blade. The 1 st blade is reciprocated in the 1 st direction relative to the 2 nd blade by the power of the prime mover. When the work machine moves forward in the front-rear direction orthogonal to the up-down direction in a state in which the 1 st blade reciprocates relative to the 2 nd blade, the 1 st blade and the 2 nd blade of the 1 st blade cut the object to be cut. The seal member is disposed on the front side of the power conversion mechanism in the front-rear direction, and suppresses movement of the object to be cut, which is cut by the 1 st blade of the 1 st blade and the 2 nd blade of the 2 nd blade, between the 1 st blade and the cover member toward the power conversion mechanism. With the above configuration, the movement of the cut object toward the power conversion mechanism is suppressed by the seal member. Further, since the seal member is locked to the 1 st blade, the seal member reciprocates together with the 1 st blade in the 1 st direction with respect to the 2 nd blade. Thereby, the sealing member pushes out the cut object in the direction along the 1 st direction. With this configuration, the movement of the cut object toward the power conversion mechanism can be suppressed. Drawings Fig. 1 is a perspective view of a work machine 2 of an embodiment. Fig. 2 is a perspective view of the vicinity of the rear end unit 6 of the working machine 2 of the embodiment. Fig. 3 is a perspective view of electric motor 32 and reduction mechanism 34 of work machine 2 of the embodiment. Fig. 4 is a perspective view of the vicinity of the front end unit 8 of the working machine 2 of the embodiment. Fig. 5 is a cross-sectional view of the vicinity of the front end unit 8 of the working machine 2 of the embodiment. Fig. 6 is an exploded perspective view of blade unit 46 of work machine 2 of the embodiment. Fig. 7 is a front cross-sectional view of the vicinity of blade unit 46 of work machine 2 of the embodiment. Fig. 8 is a perspective view of cover member 52 of work machine 2 of the embodiment. Fig. 9 is an upper cross-sectional view of the vicinity of blade unit 46 of work machine 2 of the embodiment. Fig. 10 is a vertical cross-sectional view of the vicinity of blade unit 46 of work machine 2 of the embodiment. Description of the reference numerals 2.4, Lever, 6, rear end unit, 8, front e