A wood safety cutting apparatus

Abstract

The utility model relates to a kind of timber safety cutting equipment, including shell and guide plate, one end of guide plate is fixedly installed in shell, saw chain is rotatably installed in periphery, the periphery of guide plate and saw chain is provided with shroud, the left end of shroud and shell right side are rotatably connected, human body sensor is installed in the round hole of shroud right end, human body sensor is connected with the controller for controlling the rotation of saw chain in shell using wireless technology and signal;The timber safety cutting equipment, by the rotation restriction of clamping groove, when user presses from the upside of shroud, cannot rotate, so that user can be avoided to be injured by mistake, again by the human body sensor being set in the right side of shroud, human body can be detected in advance close to saw chain, stop signal is transmitted to controller, electric motor is not started or the rotation of electric motor output shaft and saw chain is stopped, the saw chain rotated in preset range can be effectively avoided to be injured by mistake, reach the purpose of safe construction, even non-professional personnel can safely use cutting wood.

Description

Technical Field

[0001] This utility model relates to the field of chainsaw technology, specifically to a safe wood cutting device. Background Technology

[0002] Chainsaws are mainly used for logging and timber processing. Their working principle is based on the lateral movement of the L-shaped blades on the saw chain to perform the cutting action.

[0003] However, electric chainsaws are handheld power tools that perform high-speed band rotation sawing. Due to the need for sawing wood, the chainsaw chain is generally not equipped with a protective cover. Therefore, the operation of electric chainsaws should be carried out by qualified professionals to ensure safety and improve production efficiency. In order to ensure that non-professionals can also use electric chainsaws safely, this paper proposes a wood safety cutting device with protective functions. Utility Model Content

[0004] The purpose of this invention is to address the problem that electric chainsaws in the prior art generally do not have a protective cover around the saw chain, and to propose a safe wood cutting device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A safe wood cutting device includes a housing and a guide plate. One end of the guide plate is fixedly installed inside the housing, and a saw chain is rotatably installed around it. A protective cover is provided around the guide plate and the saw chain, and the left end of the protective cover is damped and rotatably connected to the right side of the housing.

[0007] A human body sensor is installed in the round hole at the right end of the protective cover. The human body sensor is connected to the controller in the housing for controlling the rotation of the saw chain using wireless technology.

[0008] Preferably, the right side of the housing is provided with a slot that fits into the outer wall of the left side of the protective cover.

[0009] Preferably, a spring rod is hinged between the housing and the cover via connecting seat two and connecting seat one, respectively, and connecting seat two and connecting seat one are fixedly installed on the housing and the cover, respectively.

[0010] Preferably, limit plates are provided on both sides of the spring bar, and the limit plates are fixedly connected to the housing.

[0011] Preferably, two baffles are provided on the upper right side of the housing, and the spring rod is located between the two baffles.

[0012] Preferably, the downward-facing strip cavity in the protective cover is connected to a chip discharge port above it.

[0013] Compared with the prior art, this utility model provides a safe wood cutting device, which has the following features:

[0014] Beneficial effects:

[0015] 1. This safe wood cutting equipment uses a rotating locking mechanism to prevent the saw chain from rotating when pressed down from the top of the cover, thus avoiding accidental injury. Furthermore, a human body sensor on the right side of the cover detects when a person approaches the saw chain and sends a stop signal to the controller, preventing the motor from starting or stopping the rotation of the motor output shaft and saw chain. This effectively prevents accidental injury to people within a preset range from the rotating saw chain, achieving safe construction. Even non-professionals can safely use it to cut wood.

[0016] 2. This safe wood cutting equipment uses the elastic thrust of a spring rod to automatically cover the guard parallel to the guide plate and the outside of the saw chain, preventing users from accidentally touching the saw chain from above. When cutting wood with the saw chain, the wood being cut can push the guard to rotate upwards without affecting the cutting of the rotating saw chain. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a safe wood cutting device proposed in this utility model;

[0018] Figure 2 This is a cross-sectional view of a safe wood cutting device proposed in this utility model.

[0019] In the diagram: 1. Housing; 2. Protective cover; 21. Chip discharge port; 22. Round hole; 3. Human body sensor; 4. Connecting seat one; 5. Connecting seat two; 6. Spring rod; 7. Limiting plate; 8. Baffle; 9. Guide plate; 10. Slot. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] See attached document Figure 1-2A safe wood cutting device, specifically an electric chainsaw, includes a housing 1. A guide plate 9 is fixedly installed on the right side of the housing 1, and a saw chain is rotatably installed around the guide plate 9. The safe wood cutting device drives the saw chain to rotate and cut wood through the output shaft of a motor fixedly connected to the housing 1. The output shaft of the motor is coaxially fixedly connected to a gear through a coupling. The gear is meshed in the inner ring of one side of the saw chain. The motor is connected to a controller in the housing 1 for controlling the rotation of the saw chain through a wire. That is, the controller is fixedly installed inside the housing 1.

[0023] In this embodiment, a protective cover 2 is provided around the guide plate 9 and the saw chain. The strip cavity with the opening facing downward in the protective cover 2 is connected to the chip discharge port 21. The left end of the protective cover 2 is connected to the right side of the housing 1 with damping rotation. The right side of the housing 1 is provided with a slot 10 that fits into the outer wall of the left side of the protective cover 2. When the left side of the protective cover 2 is fully fitted into the inner wall of the slot 10, the strip cavity in the protective cover 2 is parallel to and surrounds the outside of the saw chain. The upper and lower ends of the protective cover 2 are respectively located on the upper and lower sides of the saw chain, which can effectively prevent the user from being accidentally cut. The protective cover 2 can only rotate 90° to the left from the connection point of the housing 1. When the protective cover 2 is parallel to and covers the outside of the saw chain, the protective cover 2 cannot rotate when the user presses it from the top, thus preventing the user from accidentally touching and getting injured.

[0024] refer to Figure 2 The saw chain mainly rotates counterclockwise around the periphery of the guide plate 9, with the initial wood cutting side below. A human body sensor 3 is fixedly installed in the round hole 22 at the right end of the cover 2. The detection head of the human body sensor 3 faces the initial wood cutting side, and the human body sensor 3 uses wireless technology to connect with the controller in the housing 1 that controls the rotation of the saw chain. The human body sensor 3 is mainly used to detect whether there is a human body within a preset range on the side where the saw chain cuts the wood. When the human body sensor 3 detects that a human body has entered the preset range, the human body sensor 3 sends a stop signal back to the controller to stop the rotation of the motor output shaft and the saw chain, which can effectively avoid accidental injury to the human body within the preset range and achieve the purpose of safe construction.

[0025] In this embodiment, a spring rod 6 is hinged between the housing 1 and the protective cover 2 via connecting seat 2 5 and connecting seat 1 4, respectively. Connecting seat 2 5 and connecting seat 1 4 are fixedly installed on the housing 1 and the protective cover 2, respectively. Limiting plates 7 are provided on both sides of the spring rod 6. The limiting plates 7 are mainly used to limit the deformation range of the spring rod 6. The limiting plates 7 are fixedly connected to the housing 1. Two baffles 8 are provided on the upper right side of the housing 1. The spring rod 6 is located between the two baffles 8. The two baffles 8 are mainly used to block the flying debris generated by the saw chain cutting wood. The protective cover 2 is used to automatically and parallelly cover the guide plate 9 and the periphery of the saw chain through the elastic thrust of the spring rod 6. When the saw chain is used to cut wood, the wood being cut can push the protective cover 2 to rotate upward.

[0026] In this utility model, when the protective cover 2 is parallel to the outer periphery of the saw chain, when the user presses down from the top of the protective cover 2, the protective cover 2 is limited by the slot 10 and cannot rotate, thereby preventing the user from being accidentally injured.

[0027] When the user presses down on the side of the cover 2 to cut wood from below, the human body sensor 3 set on the right side of the cover 2 can detect the human body approaching the saw chain in advance and send a stop signal to the controller, so as not to start the motor or stop the rotation of the motor output shaft and the saw chain. This can effectively avoid accidental injury to the human body within the preset range and achieve the purpose of safe construction. Even non-professionals can safely use the saw to cut wood.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A safe wood cutting device, comprising a housing (1) and a guide plate (9), wherein one end of the guide plate (9) is fixedly installed inside the housing (1), and a saw chain is rotatably installed on its periphery, characterized in that: The guide plate (9) and the saw chain are provided with a protective cover (2), and the left end of the protective cover (2) is connected to the right side of the housing (1) with damping rotation. A human body sensor (3) is installed in the round hole (22) at the right end of the protective cover (2). The human body sensor (3) is connected to the controller in the housing (1) for controlling the rotation of the saw chain using wireless technology.

2. The wood cutting safety device according to claim 1, characterized in that: The right side of the housing (1) is provided with a slot (10) that fits into the outer wall of the left side of the protective cover (2).

3. The wood cutting safety device according to claim 1, characterized in that: A spring rod (6) is hinged between the housing (1) and the cover (2) via a second connecting seat (5) and a first connecting seat (4), respectively. The second connecting seat (5) and the first connecting seat (4) are fixedly installed on the housing (1) and the cover (2), respectively.

4. The wood cutting safety device according to claim 3, characterized in that: Limiting plates (7) are provided on both sides of the spring rod (6), and the limiting plates (7) are fixedly connected to the housing (1).

5. The wood cutting safety device according to claim 3, characterized in that: Two baffles (8) are provided on the upper right side of the housing (1), and the spring rod (6) is located between the two baffles (8).

6. The wood cutting safety device according to claim 1, characterized in that: The protective cover (2) has a chip discharge port (21) above the downward-facing strip cavity.

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