Chain saw with pre-tightening chain mechanism

Abstract

The utility model discloses a chain saw with a pre-tightening chain mechanism. The chain saw comprises a shell, a cover plate and a heat dissipation frame. A guide plate is arranged in the shell, sawteeth are arranged on the surface of the guide plate, and an air outlet is formed in the bottom of the shell. The cover plate is arranged on the side edge of the shell, first bolts are arranged on the surface of the cover plate, and threaded holes allowing the first bolts to penetrate through are formed in the surface of the guide plate at equal intervals; through the arrangement of the filter screen plate, external air can be filtered, the bottom of the inserting rod is separated from the interior of the positioning plate, and then the filter screen plate can be cleaned or replaced by screwing a sunk screw; fixing with the guide plate is cancelled by screwing the first bolt, the cover plate is taken down, the guide plate is pulled towards one side, and sawteeth of the chain saw can be pre-tightened by moving the guide plate towards one side; and the motor drives the fan blades to rotate, so that heat in the shell can be circulated, the heat in the shell is prevented from burning out the chain saw, and the chain saw is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of chainsaws, in particular to a chainsaw with a pre-tightening chain mechanism. Background Technique

[0002] A chainsaw is short for "gasoline chain saw" or "gasoline-powered saw", which is a power saw used for logging and lumbering. Its sawing mechanism is a saw chain, and the power part is a gasoline engine. It is easy to carry and operate, but maintenance and repair are relatively complex. Chainsaws can be used for forest logging, lumbering, pruning, etc., as well as lumbering in timber yards, sawing of railway sleepers, etc. Chainsaw products have many advantages such as high power, low vibration, high sawing efficiency, and low logging cost, and have become the leading handheld logging machinery in China's forest areas.

[0003] In the related technology, through retrieval, a solution for a chainsaw capable of pre-tightening the chain (publication number: CN220241739U) is found. When in use, first screw out the two adjusting bolts from the box body, then remove the cover plate, move the guide plate to the right, and the chain of the chainsaw can be pre-tightened by moving the guide plate to the right to avoid the chain loosening and affecting the use of the chainsaw. After adjustment, screw the two adjusting bolts into the cover plate to fix the guide plate. After the chainsaw is started, heat will be generated. The motor drives the rotating shaft to rotate, and the rotating shaft drives the fan blade to rotate to generate wind to cool the inside of the chainsaw and prevent the inside of the chainsaw from overheating and malfunctioning.

[0004] However, the above can cool the temperature inside the chainsaw. However, when the above cools the chainsaw, since the chainsaw cuts wood, a certain amount of debris will be generated, and the debris will float in the air. And the above does not filter the outside air, so when the chainsaw is cooled, the air with debris will enter the inside of the chainsaw, and then the debris may damage the chainsaw, making it inconvenient to use. At the same time, a filter screen is provided on the surface of some chainsaws, and most of the filter screens are fixed on the surface of the chainsaw. When the filter screen is blocked, only the debris can be cleaned, and the filter screen cannot be replaced. If the filter screen is disassembled, it can only be violently removed, and then the filter screen cannot be used later. In view of this, we introduce a chainsaw with a pre-tightening chain mechanism. Content of the Utility Model

[0005] The purpose of the utility model is to provide a chainsaw with a pre-tightening chain mechanism to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A chainsaw with a pre-tightening chain mechanism, comprising: a housing, a cover plate and a heat dissipation frame;

[0007] Inside the housing, a guide plate is provided. Sawteeth are arranged on the surface of the guide plate. An air outlet is opened at the bottom of the housing, and the air outlet and the housing are integrally formed. A temperature sensor is arranged inside the housing;

[0008] The cover plate is arranged on the side of the housing. A first bolt is arranged on the surface of the cover plate. Threaded holes for the first bolt to penetrate are equidistantly opened on the surface of the guide plate, and the threaded holes and the guide plate are integrally formed;

[0009] The heat dissipation frame is arranged on one side of the housing. Vent holes are opened on the surface of the housing, and the vent holes and the housing are integrally formed. A positioning plate is inserted into the heat dissipation frame. The number of the positioning plates is two. A filter net plate is connected between the two positioning plates, and the setting of the filter net plate can filter the outside air;

[0010] A fixing frame is connected to the top of the heat dissipation frame, and the fixing frame and the heat dissipation frame are welded. A positioning mechanism is arranged inside the fixing frame. By driving a moving plate and a plugging rod to move through a second bolt of the positioning mechanism, the plugging rod is inserted into the positioning plate to form a fixation.

[0011] Preferably, the positioning mechanism includes an inclined block connected to the top of the moving plate. The inclined block and the moving plate are welded. The moving plate is slidably connected inside the fixing frame. The two ends of the moving plate contact the two sides of the fixing frame, thereby restricting the movement of the moving plate. The plugging rod is connected to the bottom of the moving plate, and the moving plate and the plugging rod are welded. The second bolt is screwed on one side of the fixing frame, and the surface of the second bolt contacts the surface of the inclined block. One end of the second bolt can drive the inclined block to move. A spring is sleeved on the surface of the plugging rod. When the plugging rod moves downward, the moving plate will squeeze the spring on the surface of the plugging rod, so that the spring is compressed.

[0012] Preferably, a countersunk head screw is connected to the bottom of the heat dissipation frame. One end of the countersunk head screw penetrates the positioning plate, and the setting of the countersunk head screw can fix the positioning plate.

[0013] Preferably, an air inlet is opened on the surface of the heat dissipation frame, and the air inlet and the heat dissipation frame are integrally formed. A motor is connected to one side of the heat dissipation frame. A fan blade is connected to the output end of the motor. When the motor is started, the output end of the motor will drive the fan blade to rotate.

[0014] Preferably, a T-shaped limiting plate is connected to the inner side of the housing. A limiting groove for slidably connecting the T-shaped limiting plate is opened on the surface of the guide plate, and the guide plate and the limiting groove are integrally formed. At the same time, when the guide plate moves, the T-shaped limiting plate can be used for limiting, so that the guide plate always moves in a horizontal state during movement.

[0015] Preferably, one side of the top of the housing is connected with a baffle plate, which is an acrylic plate, and the baffle plate can block debris from the outside.

[0016] Preferably, the other side of the top of the housing is connected with a handle, and a rubber pad is connected inside the handle, and the setting of the rubber pad can increase the friction force of the operator's hand.

[0017] Preferably, a handle groove is formed on one side of the surface of the housing, and anti-slip lines are arranged inside the handle groove, and the anti-slip lines facilitate the operator's hand to better hold inside the handle groove.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] (1) By arranging the filter screen plate, the air from the outside can be filtered, so that the air entering the inside of the housing is always in a clean state. Then, unscrew the second bolt so that one end of the second bolt cancels the contact with the inclined block, and use the elastic force of the spring to move the moving plate, the inserting rod and the moving plate upward, so that the bottom of the inserting rod disengages from the inside of the positioning plate, thereby releasing the fixation of a set of positioning plates. Then, unscrew the countersunk head screw to release the fixation of the filter screen plate, and then the filter screen plate can be cleaned or replaced, and thus it is more convenient to use;

[0020] (2) By unscrewing the first bolt to cancel the fixation with the guide plate, removing the cover plate, pulling the guide plate to one side, the saw teeth of the chainsaw can be pre-tightened by moving the guide plate to one side. After the adjustment is completed, screw the two first bolts into the cover plate, so that one end of the first bolt passes through the threaded hole on the surface of the guide plate, and then fix the guide plate;

[0021] (3) The output end of the motor drives the fan blade to rotate. Thus, under the rotation of the fan blade, the air from the outside can be driven to enter the inside of the housing through the filter screen plate, the air inlet and the air holes, and the heat inside the housing will be discharged outward from the inside of the air outlet by the fresh air, thereby circulating the heat inside the housing and preventing the heat inside the housing from burning out the chainsaw. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0023] Figure 2 is a schematic front structural diagram of the present utility model;

[0024] Figure 3 is a schematic structural diagram of the guide plate and the saw teeth of the present utility model;

[0025] Figure 4 is a schematic structural diagram of the positioning plate and the filter screen plate of the present utility model;

[0026] Figure 5 This is a schematic structural diagram of the positioning mechanism of the present utility model.

[0027] In the figure: 1. Outer shell; 2. Cover plate; 3. First bolt; 4. Guide plate; 5. Saw teeth; 6. Baffle plate; 7. Handle; 8. Grip groove; 9. Threaded hole; 10. Limit groove; 11. T-shaped limit plate; 12. Ventilation hole; 13. Fan blade; 14. Motor; 15. Filter screen plate; 16. Air inlet; 17. Positioning plate; 18. Countersunk head screw; 19. Fixed frame; 20. Insertion rod; 21. Second bolt; 22. Spring; 23. Moving plate; 24. Tilt block; 25. Heat dissipation frame; 26. Air outlet; 27. Temperature sensor. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1-5 , the present utility model provides a technical solution: A chainsaw with a pre-tightening chain mechanism, including: an outer shell 1, a guide plate 4 is arranged inside the outer shell 1, saw teeth 5 are arranged on the surface of the guide plate 4, an air outlet 26 is opened at the bottom of the outer shell 1, and a temperature sensor 27 is arranged inside the outer shell 1;

[0030] A cover plate 2, the cover plate 2 is arranged on the side of the outer shell 1, a first bolt 3 is arranged on the surface of the cover plate 2, and threaded holes 9 for the first bolt 3 to penetrate are equidistantly opened on the surface of the guide plate 4;

[0031] A heat dissipation frame 25, the heat dissipation frame 25 is arranged on one side of the outer shell 1, ventilation holes 12 are opened on the surface of the outer shell 1, a positioning plate 17 is inserted into the heat dissipation frame 25, the number of the positioning plates 17 is two, and a filter screen plate 15 is connected between the two positioning plates 17;

[0032] A fixed frame 19 is connected to the top of the heat dissipation frame 25, a positioning mechanism is arranged inside the fixed frame 19, and the second bolt 21 of the positioning mechanism drives the moving plate 23 and the insertion rod 20 to move, so that the insertion rod 20 is inserted into the positioning plate 17 to form a fixation.

[0033] The positioning mechanism includes an inclined block 24 connected to the top of the moving plate 23. The moving plate 23 is slidably connected inside the fixed frame 19. The insertion rod 20 is connected to the bottom of the moving plate 23. The second bolt 21 is screwed on one side of the fixed frame 19, and the surface of the second bolt 21 contacts the surface of the inclined block 24. A spring 22 is sleeved on the surface of the insertion rod 20.

[0034] A countersunk screw 18 is connected to the bottom of the heat dissipation frame 25. One end of the countersunk screw 18 penetrates the positioning plate 17. The setting of the countersunk screw 18 can fix the positioning plate 17.

[0035] An air inlet 16 is formed on the surface of the heat dissipation frame 25. The air inlet 16 and the heat dissipation frame 25 are integrally formed. One side of the heat dissipation frame 25 is connected with a motor 14. The output end of the motor 14 is connected with a fan blade 13. When the motor 14 is started, the output end of the motor 14 will drive the fan blade 13 to rotate.

[0036] A T-shaped limiting plate 11 is connected to the inner side of the housing 1. A limiting groove 10 for slidably connecting the T-shaped limiting plate 11 is formed on the surface of the guide plate 4. The guide plate 4 and the limiting groove 10 are integrally formed. At the same time, when the guide plate 4 moves, the T-shaped limiting plate 11 can be used for limiting, so that the guide plate 4 always moves in a horizontal state during movement.

[0037] A shielding plate 6 is connected to one side of the top of the housing 1. The shielding plate 6 is an acrylic plate, and the shielding plate 6 can shield foreign debris from the outside.

[0038] A handle 7 is connected to the other side of the top of the housing 1. A rubber pad is connected inside the handle 7, and the setting of the rubber pad can increase the friction force of the operator's hand.

[0039] A grip groove 8 is formed on one side of the surface of the housing 1. Anti-slip patterns are provided inside the grip groove 8, and the anti-slip patterns facilitate the operator's hand to better hold inside the grip groove 8.

[0040] Specifically, during use, turn the first bolt 3 to cancel its fixation with the guide plate 4, then remove the cover plate 2, and pull the guide plate 4 to one side. Since the T-shaped limiting plate 11 will slide inside the limiting groove 10 when the guide plate 4 moves, the T-shaped limiting plate 11 limits the movement of the guide plate 4. By moving the guide plate 4 to one side, the saw blade 5 of the chainsaw can be pre-tightened. After the adjustment is completed, screw the two first bolts 3 into the cover plate 2, so that one end of the first bolt 3 passes through the threaded hole 9 on the surface of the guide plate 4, thereby fixing the guide plate 4.

[0041] The temperature inside the housing 1 is detected by the temperature sensor 27 inside the housing 1. When the temperature sensor 27 inside the housing 1 senses that the temperature is higher than 30 - 35, it sends an electrical signal to the control chip (not shown in the figure) inside the housing 1. The control chip processes it and sends a control signal to control the motor 14 to start. The output end of the motor 14 drives the fan blade 13 to rotate. Thus, under the rotation of the fan blade 13, the outside air can be driven to enter the inside of the housing 1 from the filter mesh plate 15, the air inlet 16, and the ventilation holes 12. The heat inside the housing 1 will be discharged outward from the inside of the exhaust port 26 by the fresh air, thereby circulating the heat inside the housing 1 and preventing the heat inside the housing 1 from burning out the chainsaw. When the chainsaw is not in use, then the temperature sensor 27 is used to detect the temperature inside the housing 1. When the temperature inside the housing 1 is below 15 degrees, the temperature sensor 27 sends an electrical signal to the control chip (not shown in the figure) inside the housing 1. The control chip processes it and sends a control signal to control the motor 14 to stop working, thereby causing the fan blade 13 to stop rotating;

[0042] The setting of the filter mesh plate 15 can filter the outside air, so that the air entering the inside of the housing 1 is always in a clean state. At the same time, when the filter mesh plate 15 filters the air for a long time, the filter mesh plate 15 will become blocked. At this time, the operator unscrews the second bolt 21, so that one end of the second bolt 21 cancels the contact with the inclined block 24. At this time, the elastic force of the spring 22 is used to move the moving plate 23, the insertion rod 20 and the moving plate 23 upward, so that the bottom of the insertion rod 20 disengages from the inside of the positioning plate 17, thereby releasing the fixation of a set of positioning plates 17. Then the countersunk head screw 18 is unscrewed, so that the countersunk head screw 18 disengages from the inside of the other set of positioning plates 17. At this time, the fixation of the filter mesh plate 15 can be released. Then the filter mesh plate 15 is pulled outwards, and the filter mesh plate 15 can be cleaned or replaced, which is more convenient to use;

[0043] When the filter mesh plate 15 needs to be installed, the operator inserts the positioning plates 17 on the upper and lower surfaces of the filter mesh plate 15 into the inside of the heat dissipation frame 25. At this time, the countersunk head screw 18 passes through the positioning plate 17, and the insertion rod 20 also passes through the positioning plate 17. At this time, the filter mesh plate 15 can be fixed on one side of the heat dissipation frame 25.

[0044] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chainsaw with a pre-tightening chain mechanism, characterized in that, Including: A housing (1), inside which a guide plate (4) is provided. Sawteeth (5) are arranged on the surface of the guide plate (4). An air outlet (26) is formed at the bottom of the housing (1), and a temperature sensor (27) is arranged inside the housing (1). A cover plate (2) is arranged on the side of the housing (1). A first bolt (3) is arranged on the surface of the cover plate (2). Threaded holes (9) for the first bolt (3) to penetrate are equidistantly formed on the surface of the guide plate (4). A heat dissipation frame (25) is arranged on one side of the housing (1). Ventilation holes (12) are formed on the surface of the housing (1). A positioning plate (17) is inserted into the heat dissipation frame (25). The number of the positioning plates (17) is two. A filter screen plate (15) is connected between the two positioning plates (17). A fixing frame (19) is connected to the top of the heat dissipation frame (25). A positioning mechanism is arranged inside the fixing frame (19). By driving a moving plate (23) and a plugging rod (20) to move through a second bolt (21) of the positioning mechanism, the plugging rod (20) is inserted into the positioning plate (17) to form a fixation.

2. The chainsaw with a pre-tightening chain mechanism according to claim 1, characterized in that, The positioning mechanism includes an inclined block (24) connected to the top of the moving plate (23). The moving plate (23) is slidably connected inside the fixing frame (19). The plugging rod (20) is connected to the bottom of the moving plate (23). The second bolt (21) is screwed on one side of the fixing frame (19), and the surface of the second bolt (21) is in contact with the surface of the inclined block (24). A spring (22) is sleeved on the surface of the plugging rod (20).

3. The chainsaw with a pre-tightening chain mechanism according to claim 1, characterized in that, A countersunk head screw (18) is connected to the bottom of the heat dissipation frame (25). One end of the countersunk head screw (18) penetrates the positioning plate (17).

4. A chainsaw with a pre-tightening chain mechanism according to claim 1, characterized in that, An air inlet (16) is formed on the surface of the heat dissipation frame (25). A motor (14) is connected to one side of the heat dissipation frame (25). A fan blade (13) is connected to the output end of the motor (14).

5. A chainsaw with a pre-tightening chain mechanism according to claim 1, characterized in that, A T-shaped limiting plate (11) is connected to the inner side of the housing (1). A limiting groove (10) for slidably connecting the T-shaped limiting plate (11) is formed on the surface of the guide plate (4).

6. A chainsaw with a pre-tightening chain mechanism according to claim 1, characterized in that, A shielding plate (6) is connected to one side of the top of the housing (1).

7. A chainsaw with a pre-tightening chain mechanism according to claim 1, characterized in that, A handle (7) is connected to the other side of the top of the housing (1).

8. A chainsaw with a pre-tightening chain mechanism according to claim 1, characterized in that, A handle groove (8) is formed on one side of the surface of the housing (1).

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