CN108422496B - Chain saw capable of preventing accidental production - Google Patents

Abstract

The invention discloses a chain saw capable of preventing accidents, which comprises a body and a saw chain, wherein a starter is arranged in the body; a cover plate is arranged on the side face of the body, a work control part is arranged on the body, an arc-shaped groove is arranged in the work control part, the arc-shaped groove is connected with a pressure plate mounting part, and a first pressure plate and a second pressure plate are rotatably arranged on the pressure plate mounting part; a first iron pressure plate is covered at the other end of the arc-shaped groove, a first pressure-bearing switch and a magnet are arranged on the working control part at the position covered by the first pressure plate, and the magnet is closer to the rotary central axis of the first pressure plate than the first pressure-bearing switch; the second pressure plate is provided with a second pressure-bearing switch, the side wall of the pressure plate mounting part is provided with a pressure-bearing platform, and the pressure-bearing platform is positioned between the second pressure-bearing switch and the side wall of the pressure plate mounting part. The invention has simple and reliable structure, convenient manufacture and low cost, has a safety protection structure and can avoid accidental injury of workers in use.

Description

A chain saw that prevents accidental production

technical field

The present invention relates to the technical field of chain saws, in particular to a chain saw for preventing accidental occurrence.

Background technique

Chain saw is a kind of demolition equipment, mainly used for logging and lumber making. According to the function and driving method, it can be divided into motorized chain saws. Chainsaws are generally divided into motorized chain saws and non-motorized chain saws.

Chain saws are divided into: gasoline saws, electric saws, pneumatic saws, and hydraulic saws according to the same source. The advantages and disadvantages of these four types of power chain saws are obvious.

Gasoline saw: It has strong mobility and is suitable for mobile work in the field, but it is noisy, troublesome to maintain, and generates a lot of heat.

Electric chainsaw: stable power, quick start, heavier than other saws, but can't move easily if the line is too long.

Pneumatic chainsaw: safe and pollution-free, low noise, light weight, but must be equipped with an air compressor, which increases the floor space and is subject to conditions.

Hydraulic chainsaw: The power is sufficient, but the start-up is slow and the work is stable. The volume of the hydraulic pump station is smaller than that of the air compressor, and the cost is higher.

This solution is mainly applicable to gasoline saws and electric chain saws. The current chain saws lack safety protection measures. When workers work for a long time, their arms will have a physiological reaction of numbness and numbness under the influence of the vibration of the chainsaw. When the workers cannot hold on, their palms can still grasp the chainsaw. The handle, but the strength of the arm can no longer support the overall weight of the chainsaw. Therefore, the chain saw will be centered on the part held by the hand, and it will turn and fall, and the worker's body may be injured at this time. In addition, when cutting special objects, if the chain saw jumps violently, it may accidentally injure workers.

Therefore, there is a need to develop an accident-proof chainsaw that can protect workers from injury.

SUMMARY OF THE INVENTION

Aiming at the deficiencies in the prior art, the present invention provides a chain saw for preventing accidental generation, which has the advantages of simple and reliable structure, convenient manufacture and low cost, and a safety protection structure, which can avoid accidental injury of workers during use.

In order to solve the above technical problems, the present invention is solved by the following technical solutions: a chain saw for preventing accidental production, including a main body and a saw chain, a starter is arranged in the main body, and the starter controls the operation of the chain saw, The main body is provided with a holding part, and the holding part is provided with a start switch; the side of the main body is provided with a cover plate, and the part covered by the cover plate on the main body is provided with a work control part, and the work control part is provided on the main body. An arc-shaped groove is arranged inside the arc-shaped groove, the arc-shaped groove is connected with a pressure plate mounting part, and the pressure plate mounting part is rotatably provided with a first pressure plate and a second pressure plate; the lowest part of the arc-shaped groove is located at the center of the circle passing through the cover plate On the vertical line, a truncated truncated mounting portion is provided, and iron balls are mounted above the mounting portion; the arc-shaped groove is located above the mounting portion and is provided with a guide arc, and the guide arc When the rolling ball leaves the mounting part, a guiding effect is generated; the other end of the arc-shaped groove is covered with the iron first pressing plate, and the work control part is located at the place covered by the first pressing plate A first pressure-bearing switch and a magnet are provided, and the magnet is closer to the rotation center axis of the first pressure plate than the first pressure-bearing switch; the second pressure-bearing plate is provided with a second pressure-bearing switch, and the pressure plate mounting portion A pressure-bearing table is arranged on the side wall of the device, and the pressure-bearing table is located between the second pressure-bearing switch and the side wall of the pressure plate mounting part.

In the above technical solution, preferably, three bolts are evenly arranged on the cover plate and are fastened and mounted on the body by bolts.

In the above technical solution, preferably, the side of the main body is further provided with an alarm part, the alarm part is provided with a plurality of sound through holes, and the sound through holes are used for the alarm sound of the alarm part to be transmitted.

In the above technical solution, preferably, the minimum distance between the connection between the guide arc and the arc-shaped groove and the inclined surface is greater than the diameter of the rolling ball.

In the above technical solution, preferably, the width of the arc-shaped groove is no less than 1.3 times the diameter of the rolling ball, and no more than 1.6 times the diameter of the rolling ball.

In the above technical solution, preferably, the included angle between the line connecting the contact portion of the rolling ball and the mounting portion to the center of the rolling ball and the vertical line is 40 degrees.

In the above technical solution, preferably, an inclined baffle surface is provided on the outer side of the mounting portion, and a rubber buffer pad is disposed on the inclined baffle surface.

In the above technical solution, preferably, a transitional slope is provided between the mounting portion and the arc-shaped groove, and the included angle between the slope and the horizontal line is 5 degrees.

In the above technical solution, preferably, a work indicator light is provided on the cover plate, and the work indicator light is connected to the starter.

The invention has the advantages of simple and reliable structure, convenient manufacture and low cost, and a safety protection structure, which can avoid accidental injury of workers during use.

Description of drawings

Fig. 1 is the outline structure schematic diagram of the present invention.

2 is a schematic diagram of the structure of the arc groove below the cover plate of the present invention.

FIG. 3 is a schematic diagram of the structure at A in FIG. 2 .

Figure 4 is a schematic diagram of the rolling ball of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments: As shown in Figures 1 to 4, a chain saw for preventing accidental production includes a main body 1 and a saw chain 3, and a starter is provided in the main body 1 , the starter controls the work of the chain saw, the main body 1 is provided with a holding part 2, the holding part 2 is provided with a start switch 21; the side of the main body 1 is provided with a cover plate 11, the main body 1 The upper part covered by the cover plate 11 is provided with a work control part 10, an arc groove 4 is arranged in the work control part 10, the arc groove 4 is connected with a pressure plate installation part 101, and the pressure plate installation part 101 rotates A first pressing plate 6 and a second pressing plate 7 are provided; the lowest part of the arc-shaped groove 4 is located on a vertical line passing through the center of the circle of the cover plate 11 , and a truncated truncated mounting part 41 is provided. The iron ball 5 is installed above the 41; the arc groove 4 is provided with a guide arc 43 at the upper part of the installation part 41, and the guide arc 43 guides the ball when it leaves the installation part. Function; the other end of the arc groove 4 is covered with the iron first pressure plate 6, and the work control part 10 is provided with a first pressure switch 61 and The magnet 62, the magnet 62 is closer to the rotation center axis of the first pressure plate 6 than the first pressure switch 61; the second pressure plate 7 is provided with a second pressure switch 71, and the pressure plate mounting part 101 A pressure bearing platform 72 is provided on the side wall, and the pressure bearing platform 72 is located between the second pressure bearing switch 71 and the side wall of the pressure plate mounting portion 101 .

Three bolts 13 are evenly arranged on the cover plate 11 and are fastened to the main body 1 by the bolts 13 .

The side of the main body 1 is also provided with an alarm part 12 , and the alarm part 12 is provided with a plurality of sound-through holes, and the sound-through holes allow the alarm sound of the alarm part 12 to be transmitted.

The minimum distance between the connection between the guide arc 43 and the arc groove 4 and the inclined surface 44 is greater than the diameter of the rolling ball 5 .

The width of the arc-shaped groove 4 is not less than 1.3 times the diameter of the rolling ball 5 , and not more than 1.6 times the diameter of the rolling ball 5 .

The included angle between the line connecting the contact portion of the rolling ball 5 and the mounting portion 41 to the center of the rolling ball 5 and the vertical line is 40 degrees.

An inclined baffle surface 42 is provided on the outer side of the mounting portion 41 , and a rubber buffer pad 421 is disposed on the inclined baffle surface 42 .

A transitional slope 44 is provided between the mounting portion 41 and the arc-shaped groove 4 , and the included angle between the slope 44 and the horizontal line is 5 degrees.

A working indicator light 111 is provided on the cover plate 11 , and the working indicator light 111 is connected with the starter.

When the chain saw is turned over, if the saw chain 3 is higher than the body 1, it will not be affected and can still work normally. If the saw chain 3 is lower than the main body 1, there may be an accident. And if the angle is greater than 40 degrees, it can basically be determined that the worker's arm is sore and numb and cannot properly support the chainsaw. At this point, it is determined that it is an economic situation, and the chain saw needs to be shut down immediately, so as to minimize the damage.

When the flip angle is greater than 40 degrees, the mounting portion cannot support and restrain the rolling ball 5, and the rolling ball 5 will be detached from the mounting portion. If the flip angle continues to increase, the rolling ball 5 will continue to roll, eventually reaching the other end of the arc-shaped groove 4, and then hitting the first pressing plate 6. Because the magnet 62 is relatively close to the rotation center of the first pressing plate 6, the ball 5 needs to exert a small force on the first pressing plate 6 to push the first pressing plate 6 to overturn against the magnetic force of the magnet. When the first pressure plate 6 is turned over, the first pressure-bearing switch 61 is no longer pressed, which means that an unexpected situation has occurred and the starter stops working. At this time, if the worker still presses the start switch 21, the chain saw will still be Unable to start cutting work to avoid accidents.

When the rolling continues, the rolling ball 5 will press the first pressing plate 6 on the second pressing plate 7 together, and make the second pressing plate 7 rotate against the elastic force of the spring provided thereon. After the second pressure plate 7 is rotated, the second pressure-bearing switch 71 will be rotated together, so that the second pressure-bearing switch 71 is pressed on the pressure-bearing table 72, and thus the second pressure-bearing switch 71 is triggered, so the alarm unit 12 An alarm will sound.

When the device is working normally, the rolling ball 5 is located on the mounting part, so the starter works normally, and when the worker presses the start switch 21, the chainsaw can start the cutting work normally. However, if the rolling ball 5 leaves the installation part, the starter stops working. At this time, if the worker still presses the start switch 21, the chain saw still cannot start the cutting work, so as to avoid accidents.

The device is provided with a working indicator light 111 on the cover plate 11. When the starter is working normally, the working indicator light 111 will light up, indicating that the device can work normally.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that are easily thought of by those skilled in the art made by the present technology all fall within the scope of the present invention. protected range.

The invention has the advantages of simple and reliable structure, convenient manufacture and low cost, and a safety protection structure, which can avoid accidental injury of workers during use.

Claims (9)

1. A chain saw for preventing accidental generation, characterized in that: the chain saw comprises a body (1) and a saw chain (3), wherein a starter is arranged in the body (1) and controls the chain saw to work, a holding part (2) is arranged on the body (1), and a starting switch (21) is arranged on the holding part (2); a cover plate (11) is arranged on the side face of the body (1), a work control part (10) is arranged on the part, covered by the cover plate (11), of the body (1), an arc-shaped groove (4) is arranged in the work control part (10), the arc-shaped groove (4) is connected with a pressing plate installation part (101), and a first pressing plate (6) and a second pressing plate (7) are rotatably arranged on the pressing plate installation part (101); the lowest part of the arc-shaped groove (4) is positioned on a vertical line passing through the circle center of the cover plate (11), and is provided with a circular truncated cone-shaped mounting part (41), and an iron rolling ball (5) is arranged above the mounting part (41); a guide arc (43) is arranged at the upper part of the installation part (41) of the arc-shaped groove (4), and the guide arc (43) plays a role in guiding when the rolling ball leaves the installation part; the other end of the arc-shaped groove (4) is covered with the first iron pressing plate (6), a first pressure bearing switch (61) and a magnet (62) are arranged on the working control part (10) at the position covered by the first pressing plate (6), and the magnet (62) is closer to the rotary central axis of the first pressing plate (6) than the first pressure bearing switch (61); the second pressure plate (7) is provided with a second pressure-bearing switch (71), the side wall of the pressure plate mounting portion (101) is provided with a pressure-bearing platform (72), and the pressure-bearing platform (72) is located between the second pressure-bearing switch (71) and the side wall of the pressure plate mounting portion (101).

2. A saw as defined in claim 1, wherein the saw further comprises: the cover plate (11) is uniformly provided with three bolts (13) and is tightly installed on the body (1) by utilizing the bolts (13).

3. A saw as defined in claim 1, wherein the saw further comprises: the side surface of the body (1) is further provided with an alarm part (12), the alarm part (12) is provided with a plurality of sound through holes, and the sound through holes are used for transmitting the alarm sound of the alarm part (12).

4. A saw as defined in claim 1, wherein the saw further comprises: installation department (41) with be provided with transitional action's inclined plane (44) between arc wall (4), inclined plane (44) and water flat line contained angle are 5 degrees.

5. A saw as defined in claim 4, wherein the saw further comprises: the minimum distance from the joint of the guide arc (43) and the arc-shaped groove (4) to the inclined plane (44) is larger than the diameter of the rolling ball (5).

6. A saw as defined in claim 1, wherein the saw further comprises: the width of the arc-shaped groove (4) is not less than 1.3 times of the diameter of the rolling ball (5) and not more than 1.6 times of the diameter of the rolling ball (5).

7. A saw as defined in claim 1, wherein the saw further comprises: the included angle between the connecting line of the contact part of the rolling ball (5) and the installation part (41) to the center of the rolling ball (5) and the vertical line is 40 degrees.

8. A saw as defined in claim 1, wherein the saw further comprises: the installation department (41) outside is provided with oblique fender surface (42), be provided with rubber buffer pad (421) on the oblique fender surface (42).

9. A saw as defined in claim 1, wherein the saw further comprises: and a working indicator lamp (111) is arranged on the cover plate (11), and the working indicator lamp (111) is connected with the starter.

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