Tool bit clamping structure of electric tool

Abstract

The utility model discloses a tool bit clamping structure of an electric tool, which relates to the technical field of electric tools and comprises a tool bit mounting head, the outer wall of the tool bit mounting head is slidably connected with a tool bit protection component, the tool bit mounting head comprises a columnar connector, two sides of the outer wall of the columnar connector are respectively provided with a connector sliding groove, and the connector sliding groove is connected with the tool bit protection component. A hydraulic push rod is fixedly connected to the top of the inner wall of the columnar connector, connecting vertical rods are fixedly connected to the outer wall of the columnar connector in an annular array mode, and sliding groove blocks are fixedly connected to the outer walls of the multiple connecting vertical rods. The problems that when some long cutters or heavy cutters are clamped, the stability and safety of the cutters are difficult to guarantee only through the clamping force of an electric tool, especially when high-speed rotation or high-strength cutting operation is carried out, the operation efficiency is affected by shaking or falling of the cutters, and the working efficiency is affected are solved. And an operator may be hurt.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, specifically to a power tool cutting head clamping structure. Background Technology

[0002] Power tools are tools that use electricity to work. They are characterized by high efficiency and convenience. In power tools, the cutter head clamping structure is one of the key components to realize the function of the tool. It is responsible for fixing and supporting the cutter head, ensuring that the cutter head can remain stable during rotation or cutting, thereby improving work efficiency and safety.

[0003] According to patent document CN216541198U, a quick-change structure for a saw blade in a power tool includes a locking mechanism, a head shell, a blade holder, and a quick-change buckle. The locking mechanism is installed inside the head shell to fix or release the saw blade. The blade holder is installed at the bottom of the head shell. The quick-change buckle is hinged to the head shell and controls the locking or releasing of the locking mechanism. The locking mechanism includes a movable rod, a locking rod, a spring collet, a locking block, a limiting sleeve, and a reset device. The spring collet is located below the movable rod, and the locking rod is held by the spring collet. The locking block and the limiting sleeve control the opening and closing of the spring collet, and the reset device resets the locking block. This invention uses the cooperation of the spring collet and the locking block to load and unload the saw blade. Loading and unloading the saw blade only requires rotating the quick-change buckle to remove the locking rod, replacing the saw blade on the locking rod, and then reinstalling the locking rod and rotating the quick-change buckle to tighten it. The process is quick and simple.

[0004] When power tools clamp cutters, they usually only fix the cutter head. When clamping long or heavy cutters, the clamping force of the power tool alone is not enough to ensure the stability and safety of the cutter. Especially during high-speed rotation or high-intensity cutting operations, the wobble or fall of the cutter will not only affect the work efficiency, but may also cause injury to the operator. Utility Model Content

[0005] The purpose of this utility model is to provide a power tool head clamping structure to solve the problem in the prior art that when clamping some long or heavy tools, it is difficult to ensure the stability and safety of the tool by relying solely on the clamping force of the power tool itself. Especially during high-speed rotation or high-intensity cutting operations, the shaking or falling of the tool not only affects the work efficiency but may also cause injury to the operator.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a power tool head clamping structure, including a head mounting head, wherein a head protection component is slidably connected to the outer wall of the head mounting head;

[0007] The cutter head mounting head includes a columnar connector. Connector grooves are respectively formed on both sides of the outer wall of the columnar connector. A hydraulic push rod is fixedly connected to the top of the inner wall of the columnar connector. Connecting uprights are fixedly connected to the outer wall of the columnar connector in a circular array. A sliding block is fixedly connected to the outer wall of each of the multiple connecting uprights. A sliding disc is fixedly connected to the top of the inner side of each of the multiple connecting uprights. Hydraulic push rod fixing grooves are formed on the outer wall of the columnar connector, aligning with the two connected head grooves.

[0008] Preferably, the top of the chute has a circular array of through slots extending to the bottom, a chute connecting rod is fixedly connected to the bottom center of the chute, the bottom of the chute connecting rod is fixedly connected to the top center of the columnar connector, and a fixing component is fixedly connected to the top center of the chute.

[0009] Preferably, a lifting shaft is slidably connected to the outer wall of the sliding plate connecting rod, and a rotating rod is rotatably connected to the outer wall of the lifting shaft in a ring array. A shrinking and expanding plate slider is slidably connected to the inner wall of each of the multiple sliding plate through slots. The side of each of the multiple rotating rods away from the lifting shaft is rotatably connected to the inner side of each of the shrinking and expanding plate sliders. Z-shaped push-pull rods are fixedly connected to both sides of the bottom of the lifting shaft. The bottom of each of the two Z-shaped push-pull rods extends to the inner side of the columnar connector and is fixedly connected to a push-pull plate. The bottom end of the hydraulic push rod is fixedly connected to the top center of the push-pull plate.

[0010] Preferably, each of the plurality of expansion and contraction plate sliders is fixedly connected to an expansion and contraction plate at its top, and each of the plurality of expansion and contraction plate sliders is fixedly connected to an expansion and contraction plate clamp at its inner top.

[0011] Preferably, the fixing component includes a fixing component chassis, with sliding rods fixedly connected in a circular array to the top of the fixing component chassis, and supporting uprights fixedly connected in a circular array to the outer top of the fixing component chassis. A top plate is fixedly connected to the top of multiple supporting uprights, the top plate having a hollow design in its center. A motor placement block is fixedly connected to the bottom outer side of the fixing component chassis, and a motor is fixedly connected to the inner wall of the motor placement block. The output end of the motor extends to the top of the fixing component chassis and is fixedly connected to a gear rod. The top end of the gear rod is fixedly connected to... The gear has a turntable rotatably connected to the top center of the fixed component chassis. Turntable tooth blocks are fixedly connected to the outer wall of the turntable in a ring array. Multiple turntable tooth blocks fixed to the outer wall of the turntable mesh with the outer wall of the gear. The top of the turntable has an arc-shaped groove in a ring array. L-shaped expansion rods are slidably connected to the inner walls of multiple sliding rods. A stop block is fixedly connected to the top of the multiple L-shaped expansion rods on the side closer to each other. The outer walls of the multiple stop blocks are rotatably connected to the inner walls of the arc-shaped grooves. Two clamping rods are fixedly connected to the outer walls of the multiple L-shaped expansion rods on the side farther from each other.

[0012] Preferably, the cutter head protection assembly includes a cutter head protection tube, the inner wall of which is slidably connected to the outer wall of a plurality of expansion and contraction plate sliders. A cutter head protection tube push-pull rod is fixedly connected in a ring array at the bottom of the cutter head protection tube. The outer walls of the plurality of cutter head protection tube push-pull rods are slidably connected to the inner walls of a plurality of sliding blocks. The bottom ends of the plurality of cutter head protection tubes extend to the bottom of the outer wall of the sliding block and are fixedly connected to a protection tube push-pull plate. Push-pull plate sliders are fixedly connected to both sides of the inner wall of the protection tube push-pull plate. A second hydraulic push rod is fixedly connected to the top of each of the two push-pull plate sliders. The top of the outer walls of the two second hydraulic push rods are fixedly connected to the inner walls of two hydraulic push rod fixing slots opened in the columnar connector. The outer walls of the two push-pull plate sliders are slidably connected to the inner walls of two connector slots opened in the columnar connector.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This application solves the problem that when clamping long or heavy cutting tools, the clamping force of the power tool itself is insufficient to guarantee the stability and safety of the tool, especially during high-speed rotation or high-intensity cutting operations. The movement or fall of the tool not only affects work efficiency but may also cause injury to the operator. Specifically, to fix the cutting head, the cutting head is first inserted between the top plate and the bottom plate. After starting the motor, the gear rod and gear rotate, driving the turntable to rotate. The arc groove of the turntable pushes the abutment block to move. The abutment block causes the L-shaped expansion rod to slide in the slide rail, and the clamping rod clamps the cutting head accordingly. For longer or heavier cutting heads, the hydraulic push rod pushes the push-pull plate and Z-shaped push-pull rod to raise and lower the lifting shaft. The expansion plate slider slides in the through groove of the slide plate, further clamping the cutting head. The expansion plate clamping plate enhances the clamping effect and achieves quick fixing of the cutting head. The combined use of the motor and hydraulic push rod improves the clamping and fixing ability of cutting heads of different sizes and enhances the practicality of the cutting head mounting head.

[0015] 2. The cutting head protection component of this application protects the cutting head, preventing damage from the external environment or accidental injury to the operator when the cutting head is not in use, thus improving the safety performance of power tools. Specifically, when the power tool is finished but the cutting head does not need to be replaced, the protective tube push-pull plate can be pulled towards the columnar connector by the retraction function of the second hydraulic push rod, so that the cutting head protection tube slides upward along the outer wall of the expansion plate slider until the cutting head protection tube completely covers the cutting head of the power tool. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main three-dimensional structure of the electric tool head clamping structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional separation structure of the main body of the electric tool head clamping structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional separation structure of the cutting head mounting head in the power tool cutting head clamping structure of this utility model;

[0019] Figure 4 This is a three-dimensional detached structural diagram of the fixing component of the electric tool head clamping structure of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the cutter head protection component of the electric tool cutter head clamping structure of this utility model.

[0021] Numbered in the diagram: 1. Cutter head mounting head; 11. Columnar connector; 12. Connector groove; 13. Hydraulic push rod fixing groove; 14. Connecting upright; 15. Groove block; 16. Hydraulic push rod; 17. Groove plate connecting rod; 18. Groove plate; 19. Groove plate through groove; 110. Expanding plate slider; 111. Expanding plate; 112. Expanding plate clamping plate; 113. Lifting shaft; 114. Rotating rod; 115. Z-shaped push-pull rod; 116. Push-pull plate; 117. Fixing assembly; 1171. Fixing assembly base; 1 172. Support pole; 1173. Top plate; 1174. Slide bar; 1175. Motor placement block; 1176. Motor; 1177. Gear rod; 1178. Gear; 1179. Turntable; 1180. Turntable tooth block; 1181. Arc groove; 1182. L-shaped expansion rod; 1183. Abutment block; 1184. Clamping rod; 2. Cutter head protection assembly; 21. Cutter head protection tube; 22. Cutter head protection tube push-pull rod; 23. Protection tube push-pull plate; 24. Push-pull plate slider; 25. Second hydraulic push rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Figure 1 - Figure 5 As shown, this utility model provides a technical solution for a power tool head clamping structure, including a head mounting head 1, and a head protection component 2 slidably connected to the outer wall of the head mounting head 1.

[0024] Please see Figure 3 and Figure 4The cutter head mounting head 1 includes a columnar connector 11. Connector grooves 12 are respectively formed on both sides of the outer wall of the columnar connector 11. A hydraulic push rod 16 is fixedly connected to the top of the inner wall of the columnar connector 11. Connecting uprights 14 are fixedly connected to the outer wall of the columnar connector 11 in a circular array. Slide blocks 15 are fixedly connected to the outer walls of multiple connecting uprights 14. Slide plates 18 are fixedly connected to the top of the inner sides of multiple connecting uprights 14. Hydraulic push rod fixing grooves 13 are formed on the outer wall of the columnar connector 11, aligning with the two connected grooves 12. A slide plate through groove 19 extending to the bottom is formed in a circular array on the top of the slide plate 18. A slide plate connecting rod 17 is fixedly connected to the center of the bottom of the slide plate 18. The bottom of the slide plate connecting rod 17 is fixed... A fixing component 117 is fixedly connected to the top center of the top center of the slide plate 18 connected to the columnar connector 11. A lifting shaft 113 is slidably connected to the outer wall of the slide plate connecting rod 17. Rotating rods 114 are rotatably connected to the outer wall of the lifting shaft 113 in a ring array. Multiple slide plate through-slots 19 are slidably connected to the inner walls of the slide plates 110. Multiple rotating rods 114 are rotatably connected to the inner sides of multiple rotating rods 110 on the side away from the lifting shaft 113. Z-shaped push-pull rods 115 are fixedly connected to both sides of the bottom of the lifting shaft 113. The bottom of each of the two Z-shaped push-pull rods 115 extends to the inner side of the columnar connector 11 and is fixedly connected to a push-pull plate 116. The bottom end of the hydraulic push rod 16 is fixedly connected to the top center of the push-pull plate 116. Multiple... Each of the expansion and contraction plate sliders 110 has an expansion and contraction plate 111 fixedly connected to its top. Expansion and contraction plate clamps 112 are fixedly connected to the inner top of each of the expansion and contraction plates 111. The fixing assembly 117 includes a fixing assembly base 1171. A sliding groove rod 1174 is fixedly connected to the top of the fixing assembly base 1171 in a circular array. Supporting uprights 1172 are fixedly connected to the outer side of the top of the fixing assembly base 1171 in a circular array. A top plate 1173 is fixedly connected to the top of each of the supporting uprights 1172. The center of the top plate 1173 has a hollow design. A motor placement block 1175 is fixedly connected to the bottom outer side of the fixing assembly base 1171. A motor 1176 is fixedly connected to the inner wall of the motor placement block 1175. The output end of the motor 1176 extends to the fixing assembly base. A gear rod 1177 is fixedly connected to the top of the base 1171. A gear 1178 is fixedly connected to the top of the gear rod 1177. A turntable 1179 is rotatably connected to the top center of the base 1171. Turntable tooth blocks 1180 are fixedly connected to the outer wall of the turntable 1179 in a ring array. The multiple turntable tooth blocks 1180 fixed to the outer wall of the turntable 1179 mesh with the outer wall of the gear 1178. An arc-shaped groove 1181 is opened in a ring array on the top of the turntable 1179. L-shaped expansion rods 1182 are slidably connected to the inner walls of multiple sliding rods 1174. A stop block 1183 is fixedly connected to the top of the multiple L-shaped expansion rods 1182 on one side close to each other. The outer walls of the multiple stop blocks 1183 are rotatably connected to the inner walls of the arc-shaped grooves 1181.Two clamping rods 1184 are fixedly connected to the outer wall of each of the multiple L-shaped expansion rods 1182 on their opposite sides;

[0025] When it is necessary to fix the cutter head, first insert the top of the cutter head through the top plate 1173 into the inner side of the top plate 1173 and the fixing component base plate 1171. Then start the motor 1176. The output end of the motor 1176 drives the gear rod 1177 to rotate. The gear rod 1177 drives the gear 1178 to rotate. Since the outer wall of the gear 1178 meshes with the outer wall of the turntable tooth block 1180, the rotation of the gear 1178 will drive the turntable 1179 to rotate. When the turntable 1179 rotates, the arc groove 1181 opened on its outer wall will drive the abutment block 1183 to move. The abutment block 1183 drives the L-shaped expansion rod 1182 to slide on the inner wall of the slide bar 1174. When the L-shaped expansion rod 1182 slides, it will drive the clamping rod 1184 fixedly connected to its outer wall to clamp and fix the outer wall of the cutter head.

[0026] When the cutter head is long or heavy, the hydraulic push rod 16 is activated. The bottom end of the hydraulic push rod 16 pushes the push-pull plate 116 to move. When the push-pull plate 116 moves, it drives the Z-shaped push-pull rod 115 to move. The Z-shaped push-pull rod 115 drives the lifting shaft 113 to rise and fall. When the lifting shaft 113 rises and falls, it drives the expansion plate slider 110 to slide on the inner wall of the slide groove 19 through the rotating rod 114. The expansion plate slider 110 drives the expansion plate 111 to further clamp and fix the outer wall of the cutter head. The setting of the expansion plate clamp 112 improves the clamping effect of the expansion plate 111 on the outer wall of the cutter head, thereby realizing the rapid fixing of the cutter head. In addition, through the cooperation of the motor 1176 and the hydraulic push rod 16, it is possible to clamp and fix cutter heads of different sizes, improving the practicality of the cutter head mounting head 1.

[0027] Please see Figure 5 The cutter head protection assembly 2 includes a cutter head protection tube 21. The inner wall of the cutter head protection tube 21 is slidably connected to the outer wall of multiple expansion and contraction plate sliders 110. The bottom of the cutter head protection tube 21 is fixedly connected to a cutter head protection tube push-pull rod 22 in a ring array. The outer walls of multiple cutter head protection tube push-pull rods 22 are slidably connected to the inner walls of multiple slide blocks 15. The bottom ends of multiple cutter head protection tubes 21 extend to the bottom of the outer wall of the slide block 15 and are fixedly connected to a protection tube push-pull plate 23. Push-pull plate sliders 24 are fixedly connected to both sides of the inner wall of the protection tube push-pull plate 23. The top of the two push-pull plate sliders 24 are fixedly connected to the top of the two push-pull plate sliders 24. The top of the outer walls of the two second hydraulic push rods 25 are fixedly connected to the inner walls of the two hydraulic push rod fixing grooves 13 opened in the columnar connector 11. The outer walls of the two push-pull plate sliders 24 are slidably connected to the inner walls of the two connector slide grooves 12 opened in the columnar connector 11.

[0028] When the power tool is finished but the cutting head does not need to be replaced, the protective tube push-pull plate 23 can be pulled towards the columnar connector 11 by the retraction function of the second hydraulic push rod 25. This causes the cutting head protective tube 21 to slide upward along the outer wall of the expansion plate slider 110 until the cutting head protective tube 21 completely covers the cutting head of the power tool, thus protecting the cutting head from damage by the external environment or accidental injury to the operator when not in use, improving the safety performance of the power tool. At the same time, due to the sliding connection design between the cutting head protective tube 21 and the expansion plate slider 110, the cutting head protective tube 21 can slide up and down flexibly along the outer wall of the expansion plate slider 110, thus facilitating quick protection and exposure of the cutting head.

[0029] Working principle: When it is necessary to fix the cutter head, first insert the top of the cutter head through the top plate 1173 into the inner side of the top plate 1173 and the fixing component base plate 1171. Then start the motor 1176. The output end of the motor 1176 drives the gear rod 1177 to rotate. The gear rod 1177 drives the gear 1178 to rotate. Since the outer wall of the gear 1178 meshes with the outer wall of the turntable tooth block 1180, the rotation of the gear 1178 will drive the turntable 1179 to rotate. When the turntable 1179 rotates, the arc groove 1181 opened on its outer wall will drive the abutment block 1183 to move. The abutment block 1183 drives the L-shaped expansion rod 1182 to slide on the inner wall of the sliding groove rod 1174. When the L-shaped expansion rod 1182 slides, it will drive the clamping rod 1184 fixedly connected to its outer wall to press against the outer wall of the cutter head. For clamping and fixing, when the cutter head is long or heavy, the hydraulic push rod 16 is activated. The bottom end of the hydraulic push rod 16 pushes the push-pull plate 116 to move. When the push-pull plate 116 moves, it will drive the Z-shaped push-pull rod 115 to move. The Z-shaped push-pull rod 115 drives the lifting shaft 113 to rise and fall. When the lifting shaft 113 rises and falls, it will drive the expansion plate slider 110 to slide on the inner wall of the slide groove 19 through the rotating rod 114. The expansion plate slider 110 drives the expansion plate 111 to further clamp and fix the outer wall of the cutter head. The setting of the expansion plate clamping plate 112 improves the clamping effect of the expansion plate 111 on the outer wall of the cutter head, thereby realizing the rapid fixing of the cutter head. In addition, through the cooperation of the motor 1176 and the hydraulic push rod 16, it is possible to clamp and fix cutter heads of different sizes, improving the practicality of the cutter head mounting head 1.

[0030] When the power tool is finished but the cutting head does not need to be replaced, the protective tube push-pull plate 23 can be pulled towards the columnar connector 11 by the retraction function of the second hydraulic push rod 25. This causes the cutting head protective tube 21 to slide upward along the outer wall of the expansion plate slider 110 until the cutting head protective tube 21 completely covers the cutting head of the power tool, thus protecting the cutting head from damage by the external environment or accidental injury to the operator when not in use, improving the safety performance of the power tool. At the same time, due to the sliding connection design between the cutting head protective tube 21 and the expansion plate slider 110, the cutting head protective tube 21 can slide up and down flexibly along the outer wall of the expansion plate slider 110, thus facilitating quick protection and exposure of the cutting head.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A power tool tip clamping structure, characterized in that: It includes a blade mounting head (1), and a blade protection component (2) is slidably connected to the outer wall of the blade mounting head (1); The cutter head mounting head (1) includes a columnar connector (11). Connector grooves (12) are respectively opened on both sides of the outer wall of the columnar connector (11). A hydraulic push rod (16) is fixedly connected to the top of the inner wall of the columnar connector (11). Connecting uprights (14) are fixedly connected to the outer wall of the columnar connector (11) in a ring array. A sliding block (15) is fixedly connected to the outer wall of multiple connecting uprights (14). A sliding plate (18) is fixedly connected to the top of the inner side of multiple connecting uprights (14). A hydraulic push rod fixing groove (13) is opened on the two outer walls of the columnar connector (11) that are aligned with the two opened connector grooves (12).

2. The power tool head clamping structure according to claim 1, characterized in that: The top of the chute (18) is provided with a ring-shaped groove (19) that extends to the bottom. A chute connecting rod (17) is fixedly connected to the bottom center of the chute (18). The bottom of the chute connecting rod (17) is fixedly connected to the top center of the columnar connector (11). A fixing component (117) is fixedly connected to the top center of the chute (18).

3. The power tool head clamping structure according to claim 2, characterized in that: The outer wall of the sliding plate connecting rod (17) is slidably connected to a lifting shaft (113). The outer wall of the lifting shaft (113) is rotatably connected to a rotating rod (114) in a ring array. The inner walls of the multiple sliding plate through slots (19) are slidably connected to expansion and contraction plate sliders (110). The side of the multiple rotating rods (114) away from the lifting shaft (113) is rotatably connected to the inner side of the multiple expansion and contraction plate sliders (110). The bottom sides of the lifting shaft (113) are respectively fixedly connected to Z-shaped push-pull rods (115). The bottom of the two Z-shaped push-pull rods (115) extends to the inner side of the columnar connector (11) and is fixedly connected to a push-pull plate (116). The bottom end of the hydraulic push rod (16) is fixedly connected to the top center of the push-pull plate (116).

4. The power tool head clamping structure according to claim 3, characterized in that: Each of the multiple expansion and contraction plate sliders (110) has an expansion and contraction plate (111) fixedly connected to its top, and each of the multiple expansion and contraction plate sliders (111) has an expansion and contraction plate clamp (112) fixedly connected to its inner top.

5. The power tool tip clamping structure according to claim 2, characterized in that: The fixing component (117) includes a fixing component chassis (1171). A sliding rod (1174) is fixedly connected in a circular array to the top of the fixing component chassis (1171). Supporting uprights (1172) are fixedly connected in a circular array to the outer top of the fixing component chassis (1171). A top plate (1173) is fixedly connected to the top of multiple supporting uprights (1172). The top plate (1173) has a hollow design in the middle. A motor placement block (1175) is fixedly connected to the bottom outer side of the fixing component chassis (1171). A motor (1176) is fixedly connected to the inner wall of the motor placement block (1175). The output end of the motor (1176) extends to the top of the fixing component chassis (1171) and is fixedly connected to a gear rod (1177). A gear (1177) is fixedly connected to the top of the gear rod (1177). 78) A turntable (1179) is rotatably connected to the top center of the fixed component chassis (1171). Turntable tooth blocks (1180) are fixedly connected to the outer wall of the turntable (1179) in an annular array. Multiple turntable tooth blocks (1180) fixed to the outer wall of the turntable (1179) mesh with the outer wall of the gear (1178). The top of the turntable (1179) has an arc-shaped groove (1181) in an annular array. L-shaped expansion rods (1182) are slidably connected to the inner walls of multiple sliding rods (1174). Abutments (1183) are fixedly connected to the top of the multiple L-shaped expansion rods (1182) on the side closer to each other. The outer walls of the multiple abutments (1183) are rotatably connected to the inner walls of the arc-shaped grooves (1181). Two clamping rods (1184) are fixedly connected to the outer walls of the multiple L-shaped expansion rods (1182) on the side farther from each other.

6. The power tool tip clamping structure according to claim 1, characterized in that: The blade protection assembly (2) includes a blade protection tube (21). The inner wall of the blade protection tube (21) is slidably connected to the outer wall of a plurality of expanding and contracting plate sliders (110). A blade protection tube push-pull rod (22) is fixedly connected to the bottom of the blade protection tube (21) in a ring array. The outer walls of the plurality of blade protection tube push-pull rods (22) are slidably connected to the inner walls of a plurality of sliding blocks (15). The bottom ends of the plurality of blade protection tubes (21) extend to the bottom of the outer wall of the sliding block (15) and are fixedly connected to a protection tube push-pull plate. 23) Push-pull plate sliders (24) are fixedly connected to both sides of the inner wall of the protective tube push-pull plate (23). The top of each of the two push-pull plate sliders (24) is fixedly connected to a second hydraulic push rod (25). The top of the outer wall of each of the two second hydraulic push rods (25) is fixedly connected to the inner wall of the two hydraulic push rod fixing grooves (13) opened in the columnar connector (11). The outer walls of the two push-pull plate sliders (24) are slidably connected to the inner wall of the two connector grooves (12) opened in the columnar connector (11).

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