CN210939689U

CN210939689U - Manual chain saw

Info

Publication number: CN210939689U
Application number: CN201921068727.8U
Authority: CN
Inventors: 李金宇
Original assignee: Hubei Ikea Heat Resistant Ceramic Sand Co ltd
Current assignee: Hubei Ikea Heat Resistant Ceramic Sand Co ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-07-07
Anticipated expiration: 2029-07-09

Abstract

The utility model provides a manual chain saw belongs to wood cutting instrument technical field, and it has solved current manual saw work efficiency low grade technical problem. This manual chain saw includes handheld base, gear train and chain dish, handheld base includes the grab handle and the fixed plate of being connected with the grab handle, handheld base is still including the mounting of connecting fixed plate and chain dish, install the gear train on the fixed plate, install the rotation handle on the gear train, the chain saw is installed to the chain dish outward flange, the gear train includes antifriction bearing and sun gear, antifriction bearing's outer lane is installed on the fixed plate, antifriction bearing's inner circle lateral part has set firmly the carousel, the eccentric position department of carousel is connected with the rotation handle. The utility model provides a manual chain saw has effectively improved work efficiency, simultaneously for manual saw is laborsaving more.

Description

Manual chain saw

Technical Field

The utility model belongs to the technical field of electric tool, concretely relates to manual chain saw.

Background

In the wood cutting work, the electric saw becomes an indispensable tool in field wood work, but in the small garden cutting, the trees are thinner, and the electric saw is unnecessary due to the green and environment-friendly principle; or in the household where the wood cutting is not performed frequently, the purchase of the expensive electric saw is not necessary on the basis of the economical principle, so the manual sawing is the choice for the small-sized wood cutting.

The Chinese patent (publication number: CN 105638259A; publication date: 20160608) discloses a saw, which comprises a support and a chain saw strip, wherein the support is integrally arched, two ends of the support are respectively provided with a fixing structure, the chain saw strip is detachably fixed on the fixing structure, one end of the fixing structure is rotatably arranged on the support, the other end of the fixing structure is provided with two openable clamping blocks, and the outer sides of the two clamping blocks are provided with fastening buckles for fastening the clamping blocks.

The saw disclosed in the above patent document is of a flat-pull type, and since the saw teeth on the saw blade are unidirectional, the saw can cut wood to a greater extent when pulling the saw, and the saw can cut wood to a lesser extent when pushing the saw away, the saw can only cut wood on one side, which is not only inefficient, but also requires a lot of effort when pulling the saw.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, provide a manual chain saw, the utility model aims to solve the technical problem that: how to improve the work efficiency of the manual saw and simultaneously make the manual saw more labor-saving.

The purpose of the utility model can be realized by the following technical proposal:

a manual chain saw comprises a handheld base, wherein the handheld base comprises a grab handle and a fixing plate connected with the grab handle, and is characterized by further comprising a gear set and a chain disc, the front end of the fixing plate is provided with a fixing piece used for mounting the chain disc, one end of the chain disc is fixedly connected to the fixing piece, and the other end of the chain disc extends outwards; the chain saw is sleeved on the outer edge of the chain disc; the fixed piece is provided with a transmission gear for driving the chain saw to operate; the gear set comprises a rolling bearing and a central gear, an outer ring of the rolling bearing is installed on the fixed plate, a rotary table is fixedly arranged on the side portion of an inner ring of the rolling bearing, a rotating handle is connected to the eccentric position of the rotary table, an inner ring gear is fixedly arranged on the inner side of the inner ring of the rolling bearing, the central gear is located at the central position of the inner ring gear, the central gear and the inner ring gear are in meshed transmission through three planetary gears, and the central gear is connected with the transmission gear through a chain.

The working principle is as follows: this technical scheme is when in actual use, and the operation is rotated the handle and then is driven the gear train and rotate, and the gear train drives drive gear through the chain and rotates after rotating, and drive gear makes the chain saw of chain dish outward flange rotate, and the chain saw on the chain dish is prior art, is existing on the electricity saw commonly used to the completion is to timber cutting.

The technical scheme has the advantages that: compared with the Chinese patent (publication number: CN 105638259A; publication date: 20160608), the chain saw can cut wood by pulling the saw, the efficiency is higher, the chain saw is driven to be more labor-saving by rotating the handle, and the wood can be cut more efficiently and labor-saving by the transmission of the planetary gear under the action of the gravity and the external force when the handle rotates to do circular motion from a high position to a bottom position.

In the above-mentioned manual chain saw, it is preferable that the gear sets are two sets, and are respectively installed on both sides of the fixed plate, and two gear sets share one sun gear, and there are two chains, and one chain is respectively installed on both sides of the chain wheel. The two chains can ensure the stability of the chain saw during working, and prevent wood chips from influencing the transmission of the chains.

In the above manual chain saw hand, preferably, the fixing member is of a V-shaped structure, and the opening of the fixing member faces the direction of the fixing plate, so that the three-point stress structure of the fixing member is more stable.

In the above manual chain saw, preferably, a strip-shaped chute is formed at an end of the chain plate, and the fixing member is fixedly connected to the chain plate through a connecting bolt inserted into the chute. The chain and the chain saw can be loosened during use, and at the moment, the position of the connecting point of the fixing piece and the chain disc can be adjusted, so that the chain and the chain saw are tightened.

In the above manual chain saw, the rotating handle includes a grip and a connecting rod, one end of the connecting rod is fixedly connected to the turntable, the other end of the connecting rod is fixedly connected to the handle, and the handle is perpendicular to the end of the connecting rod.

In the manual chain saw, the outer ring of the rolling bearing is provided with a plurality of connecting parts, the connecting parts are uniformly distributed on the outer ring of the rolling bearing at intervals, and the connecting parts are inserted with fixing bolts screwed on the fixing plate.

Compared with the prior art, the utility model has the advantages of it is following:

the chain saw in this scheme is main can rotate the cutting on the chain dish, compares in mainly cutting timber through the saw that draws, and efficiency is higher, and this scheme drives the chain saw through rotating the handle moreover to carry out the moment transmission through planetary gear, it is more laborsaving, rotate the handle when doing the circular motion from eminence to end, under the effect of self gravity and external force, make more laborsaving to ligneous cutting.

Drawings

Fig. 1 is a schematic perspective view of the present manual chain saw.

Fig. 2 is a partially enlarged schematic view of fig. 1.

FIG. 3 is a schematic view of the structure at the gear train of the present manual chain saw.

Fig. 4 is a schematic perspective view of the manual chain saw.

In the figure, 1, a base is held; 1a, fixing plates; 1b, a fixing piece; 1c, a grab handle; 2. a gear set; 2a, a central gear; 2b, a planetary gear; 2c, a fixing ring; 2d, a gear ring; 2f, a rolling bearing; 3. a chain saw; 4. a chain plate; 5. rotating the armrest; 5a, a turntable; 6, a transmission gear; 7. a chute; 8. and a chain.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 4, the manual chain saw in the present embodiment includes a handheld base 1, the handheld base 1 includes a holding handle 1c and a fixing plate 1a connected to the holding handle 1c, the manual chain saw further includes a gear set 2 and a chain wheel 4, a front end of the fixing plate 1a has a fixing member 1b for mounting the chain wheel 4, one end of the chain wheel 4 is fixed to the fixing member 1b, and the other end of the chain wheel 4 extends outward; the chain saw 3 is sleeved on the outer edge of the chain disc 4; the fixed piece 1b is provided with a transmission gear 6 for driving the chain saw 3 to operate; the gear set 2 comprises a rolling bearing 2f and a central gear 2a, an outer ring of the rolling bearing 2f is arranged on a fixing plate 1a, a rotary table 5a is fixedly arranged on the side portion of an inner ring of the rolling bearing 2f, a rotating handle 5 is connected to the eccentric position of the rotary table 5a, an inner ring gear 2d is fixedly arranged on the inner side of an inner ring of the rolling bearing 2f, the central gear 2a is located at the central position of the inner ring gear 2d, the central gear 2a and the inner ring gear 2d are in meshed transmission through three planetary gears 2b, and the central gear 2a is connected with a transmission gear 6 through a chain.

As shown in fig. 1 to 3, in the embodiment, the fixing member 1b is a V-shaped structure, and the opening of the fixing member 1b faces the fixing plate 1a, so that the three-point stress structure of the fixing member 1b is more stable. The outer ring of the rolling bearing 2f is provided with a plurality of connecting parts 2c, the connecting parts 2c are uniformly distributed on the outer ring of the rolling bearing 2f at intervals, and fixing bolts screwed on the fixing plate 1a are inserted into the connecting parts 2 c;

as shown in fig. 1 to 3, in the embodiment, the end portion of the chain wheel 4 is provided with a strip-shaped sliding groove 7, the fixing member 1b is fixedly connected with the chain wheel 4 through a connecting bolt inserted in the sliding groove 7, a situation that the chain 8 is loosened may occur in the use process, and at this time, the position of the connecting point of the fixing member 1b and the chain wheel 4 can be adjusted, so that the chain 8 is tightened.

As shown in fig. 1 to 4, the turning handle 5 in this embodiment includes a handle and a connecting rod, one end of the connecting rod is fixedly connected to the rotating disc 5a, the other end of the connecting rod is fixedly connected to the handle 5, and the handle 5 is perpendicular to the end of the connecting rod; in the attached drawing, the rotating disc 5a is a Y-shaped iron piece and can also be a circular metal disc, and the rotating disc 5a is fixedly connected with the outer side of the inner ring of the rolling bearing 2 f. The contact area between the inner ring of the rolling bearing 2f and the inner ring of the rolling bearing 2f can be increased through the connection of the turntable 5a, so that the inner ring of the rolling bearing 2f can be better stressed.

In this embodiment, two gear sets 2 are respectively installed on two sides of the fixed plate 1a, the two gear sets 2 share one central gear 2a, two chains 8 are provided, and one chain 8 is respectively arranged on two sides of the chain plate 4.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A manual chain saw comprises a handheld base (1), wherein the handheld base (1) comprises a grab handle (1c) and a fixing plate (1a) connected with the grab handle (1c), the manual chain saw is characterized by further comprising a gear set (2) and a chain disc (4), the front end of the fixing plate (1a) is provided with a fixing piece (1b) used for installing the chain disc (4), one end of the chain disc (4) is fixedly connected to the fixing piece (1b), and the other end of the chain disc extends outwards; the chain saw (3) is sleeved on the outer edge of the chain disc (4); the fixing piece (1b) is provided with a transmission gear (6) for driving the chain saw (3) to operate; gear train (2) are including antifriction bearing (2f) and sun gear (2a), install the outer lane of antifriction bearing (2f) on fixed plate (1a), the inner circle lateral part of antifriction bearing (2f) has set firmly carousel (5a), the eccentric position department of carousel (5a) is connected with rotation handle (5), the inner circle inboard of antifriction bearing (2f) has set firmly inner ring gear (2d), sun gear (2a) are located inner ring gear (2d) central point puts, mesh transmission mutually through three planetary gear (2b) between sun gear (2a) and inner ring gear (2d), sun gear (2a) with connect through chain (8) between drive gear (6).

2. The manual chain saw according to claim 1, wherein the fixing member (1b) has a V-shaped configuration, and the fixing member (1b) is opened toward the fixing plate (1 a).

3. The manual chain saw according to claim 1, wherein a strip-shaped sliding groove (7) is formed at an end of the chain wheel (4), and the fixing member (1b) is fixedly connected with the chain wheel (4) through a connecting bolt inserted into the sliding groove (7).

4. The manual chainsaw of claim 1, wherein the turning handle (5) comprises a grip and a connecting rod, one end of which is secured to the turn table (5a) and the other end of which is secured to the handle (5) and the handle (5) is perpendicular to the end of the connecting rod.

5. The manual chain saw according to claim 1, wherein the outer ring of the rolling bearing (2f) is provided with a plurality of connecting parts (2c), the connecting parts (2c) are uniformly distributed on the outer ring of the rolling bearing (2f) at intervals, and fixing bolts screwed on the fixing plate (1a) are inserted on the connecting parts (2 c).

6. A hand chain saw according to claim 5, wherein said gear sets (2) are in two sets, each mounted on either side of said fixed plate (1a), and wherein two of said gear sets (2) share one of said sun gears (2a), and wherein two of said chains (8) are present, one of said chains (8) on either side of said chain wheel (4).