CN112171581B

CN112171581B - Installation inflation screw equipment

Info

Publication number: CN112171581B
Application number: CN202011079405.0A
Authority: CN
Inventors: 范晓悦
Original assignee: Handan Darun Fastener Manufacturing Co ltd
Current assignee: Handan Darun Fastener Manufacturing Co.,Ltd.
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-12-14
Anticipated expiration: 2040-10-10
Also published as: CN112171581A

Abstract

An expansion screw mounting device comprises a transmission mechanism, a drill bit mechanism, a push-pull handle, a main grip, a switch and an auxiliary grip structure, and is characterized in that the transmission mechanism and the drill bit mechanism are rotatably mounted to realize the function of switching different drill bits; the cylindrical part of the auxiliary handle structure and the drill bit mechanism are rotatably arranged, the auxiliary handle structure is held by the other hand to keep the machine stable, and the machine is convenient to use by adjusting the angle of the auxiliary handle structure; a main handle is arranged below the shell of the transmission mechanism, a switch is arranged below the shell of the transmission mechanism, and the transmission mechanism is controlled to work through the switch; the push-pull handle is arranged outside the shell of the transmission mechanism, the push-pull handle is rotatably arranged behind the U-shaped iron plate, and the push-pull handle is arranged for pushing and fixing the U-shaped iron plate.

Description

Installation inflation screw equipment

Technical Field

The invention relates to the technical field of electric drills, in particular to equipment for installing an expansion screw.

Background

According to the existing method for installing the expansion screw, a hole needs to be formed in a wall, then the expansion pipe and the screw rod are hammered into the hole formed in the wall by using a hammer, and the nut is screwed, so that time and labor are wasted, the process is complicated, and multiple tools are needed.

Disclosure of Invention

The technical scheme adopted by the invention is as follows: an expansion screw mounting device comprises a transmission mechanism, a drill bit mechanism, a push-pull handle, a main grip, a switch and an auxiliary grip structure, and is characterized in that the transmission mechanism and the drill bit mechanism are rotatably mounted to realize the function of switching different drill bits; the cylindrical part of the auxiliary handle structure and the drill bit mechanism are rotatably arranged, the auxiliary handle structure is held by the other hand to keep the machine stable, and the machine is convenient to use by adjusting the angle of the auxiliary handle structure; a main handle is arranged below the shell of the transmission mechanism, a switch is arranged below the shell of the transmission mechanism, and the transmission mechanism is controlled to work through the switch; the push-pull handle is arranged outside the shell of the transmission mechanism, the push-pull handle is rotatably arranged behind the U-shaped iron plate, and the push-pull handle is arranged for pushing and fixing the U-shaped iron plate.

Preferably, the transmission mechanism comprises a rubber cushion, a U-shaped iron plate, a T-shaped rod, a first disc, a gear A, a motor, a circular shaft A, a gear B, a circular shaft B, a gear C, a circular shaft C, a circular rod A, a cylinder A, a bevel gear B, a first cylinder, a long block A, a circular hole and a second disc; the rubber pad is fixedly arranged on one surface of the second disc, the U-shaped iron plate is slidably arranged inside a shell of the transmission mechanism, a groove of the T-shaped rod is slidably arranged on a cylinder of the first disc, a long rod of the T-shaped rod is fixedly arranged at one end of a round rod A, the first disc is fixedly arranged at the top end of the round shaft A, a gear A is fixedly arranged on the round shaft A, a motor shaft of the motor is fixedly arranged at the bottom end of the round shaft A, a gear B is meshed with the gear A, the gear B is rotatably arranged on the round shaft B, the round shaft B is fixedly arranged on the U-shaped iron plate, a gear C is meshed with the gear B, the gear C is fixedly arranged on the round shaft C, the round shaft C is rotatably arranged on the U-shaped iron plate, the rear end of the round rod A is fixedly arranged with the T-shaped rod, the round rod A is slidably arranged in the cylinder A, the cylinder A is fixedly arranged at the rear end of the first cylinder, the bevel gear A is fixedly arranged on the first cylinder, and the bevel gear B is fixedly arranged on the round shaft C, bevel gear B and bevel gear A mesh, cylinder a slidable mounting is in the round hole of disc two, be equipped with rectangular block A in two outsides of disc, rectangular block A is used for lining up with rectangular block B, be equipped with three groups of round holes at two terminal surfaces of disc, realize making U type iron sheet promote the effect of rubber pad department forward through promoting the push-and-pull handle, then rotate the push-and-pull handle with the rectangular block card of push-and-pull handle inside the U type iron sheet that realizes of drive mechanism's shell and can not backward move.

Preferably, the drill bit mechanism comprises a long block B, a first circular ring, a small circular column, a cylinder B, a clamping strip ring A, a drill bit, a cylinder C, a clamping strip ring B, a cylinder D, a cylinder, a second circular column, a cylinder E, a fixing ring A, a spring, a fixing ring B and a second circular column; a push-pull handle is uniformly arranged on the cylinder II, a ring I is fixedly arranged on one end surface of the cylinder II, the ring I is arranged in a groove of the disc II and can rotate and slide in the groove of the disc II to realize the effect of rotating and adjusting different drill bits, three groups of small cylinders are arranged on one end surface of the cylinder II, the cylinder B rotates and is slidably arranged in a circular hole of the cylinder II, a clamping strip ring A is fixedly arranged at one end of the cylinder B, the drill bit is slidably arranged in the cylinder B, the cylinder C rotates and is slidably arranged in the circular hole of the cylinder II, the clamping strip ring B is fixedly arranged at one end of the cylinder C, the cylinder D rotates and is slidably arranged in the circular hole of the cylinder II, the cylinder is slidably arranged in the cylinder D, the cylinder E is fixedly arranged on one end surface of the cylinder D, a fixing ring A is fixedly arranged on the cylinder D, one end of a spring is fixedly connected with the fixing ring A, and the other end is fixedly connected with the fixing ring B, the fixing ring B is rotatably connected with the second ring, so that the spring can rotate along with the cylinder D when the cylinder D rotates, the cylinder D moves forwards when pushed, the cylinder D returns to the original position under the spring tension when the cylinder D does not have thrust, and the cylinder B and the cylinder C are also provided with springs the same as those of the cylinder D.

The invention has the beneficial effects that:

1. according to the invention, different drill bit functions are switched by rotationally mounting the transmission mechanism and the drill bit mechanism; the cylindrical part of the auxiliary handle structure and the drill bit mechanism are rotatably arranged, the auxiliary handle structure is grasped by the other hand to keep the stability of the machine, the machine is convenient to use by adjusting the angle of the auxiliary handle structure, and the safety is improved.

2. The circular ring is arranged in the groove of the second disc, and can rotate and slide in the groove of the second disc, so that the effect of rotating and adjusting different drill bits is realized, and the working efficiency is improved.

3. According to the invention, the long block of the push-pull handle is clamped in the shell of the transmission mechanism by rotating the push-pull handle, so that the U-shaped iron plate can not move backwards, the safety is greatly improved, the effect that the drill bit can rotate and move towards the inside of the wall at the same time is realized by setting the transmission mechanism, the punching time is saved, and the time and the labor are saved

The working principle is as follows: when the push-pull handle is pushed forwards, the push-pull handle moves forwards along with the whole U-shaped iron plate and moves forwards along with the cylinder, the cylinder pushes one of the three drills to move forwards to achieve the effect of using one drill, the motor rotates to drive the round shaft A to rotate along with the gear A and the disc, the disc rotates along with the disc to enable the T-shaped rod to move forwards to push the round rod A to move forwards along with the drill, the gear A rotates to drive the gear B to rotate along with the gear C, the bevel gear B rotates to drive the bevel gear A to rotate, the groove in the cylinder I rotates along with the cylinder B to be matched with the cylinder B, the cylinder B rotates along with the gear B, and the effect that the drill moves forwards while rotating is achieved; when the drill bit needs to be replaced, the cylinder is pulled out outwards and rotated to a required drill bit position, the long block B and the long block A on the cylinder II are aligned, the small cylinder is inserted into the round hole to achieve the effect of fixing the cylinder II, the push-pull handle is rotated and then pulled backwards to move backwards along with the U-shaped iron plate, the cylinder B moves backwards under the pulling force of the spring, the drill bit retracts into the shell of the drill bit mechanism, the cylinder is pulled out outwards and rotated one hundred eighty degrees to the position of inserting the expansion screw and the screw drill bit, the long block B and the long block A on the cylinder II are aligned, the small cylinder is inserted into the round hole to achieve the effect of fixing the cylinder II, the push-pull handle is pushed to move forwards along with the U-shaped iron plate and move forwards along with the cylinder D, the round hole on the auxiliary handle structure is aligned with the round hole punched on the wall, the switch motor is pulled to start to work, the round rod A moves forwards to push the cylinder to move forwards, the expansion tube or the screw rod placed in the cylinder E is pushed into the drilled hole, and the cylinder D cannot rotate and only the inner cylinder can move back and forth because the cylinder D is not provided with the clamping strip ring A. The push-pull handle is rotated and then pulled backwards to move backwards along with the U-shaped iron plate, the cylinder D moves backwards under the pulling force of the spring, the cylinder retracts into the shell of the drill bit mechanism, the cylinder is pulled out outwards to rotate one hundred eighty degrees to the position where the expansion screw and the screw drill bit are inserted, the long block B and the long block A on the second cylinder are aligned, the small cylinder is inserted into the round hole to achieve the effect of fixing the second cylinder, the push-pull handle is pushed to move forwards along with the U-shaped iron plate and move forwards along with the cylinder C, the nut is placed into a nut groove in the round pipe of the cylinder C, the switch motor is pulled to start working, and the effect of screwing the nut onto the screw to open the expansion screw is achieved. The three kinds of drill bits are used for drilling, screwing the nut and inserting the expansion pipe, no round rod is arranged in the nut screwing drill bit and only can rotate, and the expansion pipe inserting drill bit is not provided with a clamping strip ring B, so that only the inner round rod can move back and forth without rotating.

Drawings

Fig. 1 and 2 are schematic overall structural diagrams of the present invention.

Fig. 3 and 4 are schematic structural views of the inside of the present invention.

Fig. 5 and 6 are schematic structural views of the transmission mechanism of the present invention.

Fig. 7 and 8 are schematic structural views of the drill according to the present invention.

1-a transmission mechanism; 2-a drill bit mechanism; 3-push-pull handle; 4-main grip; 5-a switch; 6-auxiliary grip structure; 101-rubber cushion; 102-U-shaped iron plate; 103-T shaped bar; 104-disc one; 105-gear a; 106-a motor; 107-circular axis A; 108-gear B; 109-round axis B; 110-gear C; 111-circular axis C; 112-round bar A; 113-Cylinder A; 114-bevel gear a; 115-bevel gear B; 116-cylinder one; 117-long block a; 118-a circular aperture; 119-disc two; 201-long block B; 202-ring one; 203-small cylinder; 204-cylinder B; 205-card strip ring a; 206-a drill bit; 207-Cylinder C; 208-card strip ring B; 210-cylinder D; 211-cylinder; 212-cylinder two; 213-cylinder E; 214-retaining ring a; 215-a spring; 216-fixed ring B; 217-ring two.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in many ways other than those described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit of the invention, and therefore the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8

An expansion screw mounting device comprises a transmission mechanism 1, a drill bit mechanism 2, a push-pull handle 3, a main grip 4, a switch 5 and an auxiliary grip structure 6, and is characterized in that the transmission mechanism 1 and the drill bit mechanism 2 are rotatably mounted to realize the function of switching different drill bits 206; the cylinder 211 part of the auxiliary grip structure 6 and the drill bit mechanism 2 are rotatably arranged, the auxiliary grip structure 6 is held by the other hand to keep the machine stable, and the machine is convenient to use by adjusting the angle of the auxiliary grip structure 6; a main handle 4 is arranged below the shell of the transmission mechanism 1, a switch 5 is arranged below the shell of the transmission mechanism 1, and the transmission mechanism 1 is controlled to work through the switch 5; the push-pull handle 3 is arranged outside the shell of the transmission mechanism 1, the push-pull handle 3 is rotatably arranged behind the U-shaped iron plate 102, and the push-pull handle 3 is arranged for pushing and fixing the U-shaped iron plate 102.

In an optional implementation manner of the embodiment of the invention, the transmission mechanism 1 comprises rubber pads 101, a U-shaped iron plate 102, a T-shaped rod 103, a first disc 104, a gear A105, a motor 106, a round shaft A107, a gear B108, a round shaft B109, a gear C110, a round shaft C111, a round rod A112, a cylinder A113, a bevel gear A114, a bevel gear B115, a first cylinder 116, a long block A117, a round hole 118 and a second disc 119; the rubber pad 101 is fixedly arranged on one side of the second disc 119, the U-shaped iron plate 102 is slidably arranged in the shell of the transmission mechanism 1, the groove of the T-shaped rod 103 is slidably arranged on the cylinder 211 of the first disc 104, the long rod of the T-shaped rod 103 is fixedly arranged at one end of the round rod A112, the first disc 104 is fixedly arranged at the top end of the round shaft A107, the gear A105 is fixedly arranged on the round shaft A107, the motor 106 shaft of the motor 106 is fixedly arranged at the bottom end of the round shaft A107, the gear B108 is meshed with the gear A105, the gear B108 is rotatably arranged on the round shaft B109, the round shaft B109 is fixedly arranged on the U-shaped iron plate 102, the gear C110 is meshed with the gear B108, the gear C110 is fixedly arranged on the round shaft C111, the round shaft C111 is rotatably arranged on the U-shaped iron plate 102, the rear end of the round rod A112 is fixedly arranged with the T-shaped rod 103, the round rod A112 is slidably arranged in the cylinder A113, the cylinder A113 is fixedly arranged at the rear end of the cylinder A116, and the bevel gear A114 is fixedly arranged on the cylinder 116, bevel gear B115 is fixedly installed on circular shaft C111, bevel gear B115 meshes with bevel gear A114, cylinder one 116 is slidably installed in circular hole 118 of disc two 119, long block A117 is arranged on the outer side of disc two 119, long block A117 is used for aligning with long block B201, three groups of circular holes 118 are arranged on one end face of disc two 119, the effect that U-shaped iron plate 102 is pushed forwards to rubber pad 101 is achieved by pushing push-pull handle 3, then push-pull handle 3 is rotated to clamp the long block of push-pull handle 3 in the shell of transmission mechanism 1, and U-shaped iron plate 102 cannot move backwards.

In an alternative embodiment of the present invention, the drill mechanism 2 comprises, except for the same components as the previous embodiment, a long block B201, a first circular ring 202, a small cylinder 203, a cylinder B204, a clamping ring a205, a drill 206, a cylinder C207, a clamping ring B208, a cylinder D210, a cylinder 211, a second cylinder 212, a cylinder E213, a fixing ring a214, a spring 215, a fixing ring B216, and a second circular ring 217; a push-pull handle 3 long blocks B201 are uniformly arranged on a cylinder II 212, a ring I202 is fixedly arranged on one end surface of the cylinder II 212, the ring I202 is arranged in a groove of a disc II 119 and can rotate and slide in the groove of the disc II 119 to realize the effect of rotating and adjusting different drills 206, three groups of small cylinders 203 are arranged on one end surface of the cylinder II 212, a cylinder B204 is rotatably and slidably arranged in a circular hole 118 of the cylinder II 212, a clamping strip ring A205 is fixedly arranged at one end of the cylinder B204, a drill 206 is slidably arranged in the cylinder B204, a cylinder C207 is rotatably and slidably arranged in the circular hole 118 of the cylinder II 212, a clamping strip ring B208 is fixedly arranged at one end of the cylinder C207, a cylinder D210 is rotatably and slidably arranged in the circular hole 118 of the cylinder II 212, a cylinder 211 is slidably arranged in the cylinder D210, a cylinder E213 is fixedly arranged at one end surface of the cylinder D210, a fixing ring A214 is fixedly arranged on the cylinder D210, one end of a spring 215 is fixedly connected with a fixing ring A214, the other end of the spring is fixedly connected with a fixed ring B216, the fixed ring B216 is rotatably connected with a second ring 217, so that the spring 215 can rotate along with the cylinder D210 when the cylinder D210 rotates, when the cylinder D210 is pushed to move forwards, the cylinder D210 returns to the original position under the pulling force of the spring 215 when the cylinder D210 has no pushing force, and the cylinder B204 and the cylinder C207 are also provided with the spring 215 which is the same as the cylinder D210.

The working principle is as follows: when the push-pull handle 3 is pushed forwards along with the whole U-shaped iron plate 102 to move forwards, the cylinder I116 moves forwards along with the whole U-shaped iron plate 102, the cylinder I116 pushes one of the three drills 206 to move forwards to achieve the effect of using one drill 206, the motor 106 rotates to drive the circular shaft A107 to rotate along with the rotation of the gear A105 and the disc I104, the disc I104 rotates to drive the T-shaped rod 103 to move forwards to push the circular rod A112 to move forwards along with the forward movement of the drill 206, the gear A105 rotates to drive the gear B108 to rotate along with the gear C110 to drive the bevel gear B115 to rotate to drive the bevel gear A114 to rotate, the groove in the cylinder I116 is rotated along with the cylinder I116 to be matched with the cylinder B204, and the cylinder B204 rotates along with the cylinder B204 to achieve the effect that the drill 206 moves forwards while rotating; when the drill 206 needs to be replaced, the cylinder II 212 is pulled out and rotated to the required position of the drill 206, the long block B201 and the long block A117 on the cylinder II 212 are aligned, the small cylinder 203 is inserted into the round hole 118 to achieve the effect of fixing the cylinder II 212, the push-pull handle 3 is rotated and then pulled backwards to move backwards along with the U-shaped iron plate 102, the cylinder B204 moves backwards under the pulling force of the spring 215, the drill 206 retracts into the shell of the drill mechanism 2, then the cylinder II 212 is pulled out and rotated one hundred eighty degrees outwards to the position of inserting the expansion screw and the screw drill 206, the long block B201 and the long block A117 on the cylinder II 212 are aligned, the small cylinder 203 is inserted into the round hole 118 to achieve the effect of fixing the cylinder II 212, the push-pull handle 3 is pushed to move forwards along with the U-shaped iron plate 102, the cylinder D210 moves forwards, the round hole 118 on the grip structure 6 is aligned with the round hole 118 drilled on the wall, and the motor 106 of the trigger 5 starts to work, the forward movement of the rod A112 pushes the cylinder 211 forward, pushing the expansion tube or screw placed in the cylinder E213 into the hole, because the cylinder D210 is not equipped with the snap ring A205, so that the cylinder D210 will not rotate and only the inner cylinder 211 will move forward and backward. The push-pull handle 3 is rotated and then pulled backwards to move backwards along with the U-shaped iron plate 102, then the cylinder D210 moves backwards under the pulling force of the spring 215, the cylinder 211 retracts into the shell of the drill bit mechanism 2, then the cylinder II 212 is pulled out and rotated one hundred eighty degrees to the position where the expansion screw and the screw drill bit 206 are inserted, the long block B201 and the long block A117 on the cylinder II 212 are aligned, the small cylinder 203 is inserted into the round hole 118 to achieve the effect of fixing the cylinder II 212, the push-pull handle 3 is pushed to move forwards along with the U-shaped iron plate 102, the cylinder C207 moves forwards, the nut is placed into the nut groove in the round pipe of the cylinder C207, the motor 106 of the switch 5 is pulled to start working, and the effect of screwing the nut onto the screw to open the expansion screw is achieved. The three types of the drill bits 206 are used for drilling, screwing a nut and inserting an expansion pipe, the nut-screwing drill bit 206 is not provided with a round rod and only rotates, the expansion pipe inserting drill bit 206 is not provided with a clamping strip ring B208, and therefore the inner round rod cannot rotate and only moves back and forth.

Claims

1. The equipment for mounting the expansion screw is characterized by comprising a transmission mechanism (1), a drill bit mechanism (2), a push-pull handle (3), a main grip (4), a switch (5) and an auxiliary grip structure (6), wherein the transmission mechanism (1) and the drill bit mechanism (2) are rotatably mounted to realize the function of switching different drill bits (206); the cylinder (211) part of the auxiliary grip structure (6) and the drill bit mechanism (2) are rotatably arranged, the auxiliary grip structure (6) is grasped by the other hand to keep the machine stable, and the machine is conveniently used by adjusting the angle of the auxiliary grip structure (6); a main handle (4) is arranged below the shell 1 of the transmission mechanism (1), a switch (5) is arranged below the shell of the transmission mechanism (1), and the transmission mechanism (1) is controlled to work through the switch (5); the push-pull handle (3) is arranged outside the shell of the transmission mechanism (1), the push-pull handle (3) is rotatably arranged behind the U-shaped iron plate (102), and the push-pull handle (3) is arranged for pushing and fixing the U-shaped iron plate (102);

the transmission mechanism (1) comprises a rubber cushion (101), a U-shaped iron plate (102), a T-shaped rod (103), a first disc (104), a gear A (105), a motor (106), a circular shaft A (107), a gear B (108), a circular shaft B (109), a gear C (110), a circular shaft C (111), a circular rod A (112), a cylinder A (113), a bevel gear A (114), a bevel gear B (115), a cylinder I (116), a long block A (117), a circular hole (118) and a second disc (119); a rubber pad (101) is fixedly arranged on one surface of a second disc (119), a U-shaped iron plate (102) is slidably arranged in a shell of the transmission mechanism (1), a groove of a T-shaped rod (103) is slidably arranged on a cylinder (211) of a first disc (104), a long rod of the T-shaped rod (103) is fixedly arranged at one end of a round rod A (112), the first disc (104) is fixedly arranged at the top end of a round shaft A (107), a gear A (105) is fixedly arranged on the round shaft A (107), a motor (106) shaft of the motor (106) is fixedly arranged at the bottom end of the round shaft A (107), a gear B (108) is meshed with the gear A (105), a gear B (108) is rotatably arranged on the round shaft B (109), the round shaft B (109) is fixedly arranged on the U-shaped iron plate (102), a gear C (110) is meshed with the gear B (108), the gear C (110) is fixedly arranged on the round shaft C (111), and the round shaft C (111) is rotatably arranged on the U-shaped iron plate (102), the rear end of a round rod A (112) and a T-shaped rod (103) are fixedly installed, the round rod A (112) is installed in a cylinder A (113) in a sliding mode, the cylinder A (113) is fixedly installed at the rear end of a cylinder I (116), a bevel gear A (114) is fixedly installed on the cylinder I (116), a bevel gear B (115) is fixedly installed on a round shaft C (111), the bevel gear B (115) is meshed with the bevel gear A (114), the cylinder I (116) is installed in a round hole (118) of a disc II (119) in a sliding mode, a long block A (117) is arranged on the outer side of the second disc (119), the long block A (117) is used for aligning with the long block B (201), three groups of round holes (118) are arranged on one end surface of the second disc (119), the U-shaped iron plate (102) is pushed forwards to the rubber pad (101) by pushing the push-pull handle (3), then the push-pull handle (3) is rotated to clamp the long block of the push-pull handle (3) in the shell of the transmission mechanism (1) so that the U-shaped iron plate (102) cannot move backwards.

2. The device for mounting the expansion screw is characterized in that the drill bit mechanism (2) comprises a long block B (201), a first circular ring (202), a small cylinder (203), a cylinder B (204), a clamping strip ring A (205), a drill bit (206), a cylinder C (207), a clamping strip ring B (208), a cylinder D (210), a cylinder (211), a second cylinder (212), a cylinder E (213), a fixing ring A (214), a spring (215), a fixing ring B (216) and a second circular ring (217); a push-pull handle (3) long blocks B (201) are uniformly arranged on a cylinder II (212), a ring I (202) is fixedly arranged on one end surface of the cylinder II (212), the ring I (202) is arranged in a groove of the cylinder II (119) and can rotate and slide in the groove of the cylinder II (119) to realize the effect of rotating and adjusting different drill bits (206), three groups of small cylinders (203) are arranged on one end surface of the cylinder II (212), the cylinder B (204) is rotatably and slidably arranged in a round hole (118) of the cylinder II (212), a clamping strip ring A (205) is fixedly arranged at one end of the cylinder B (204), the drill bits (206) are slidably arranged in the cylinder B (204), the cylinder C (207) is rotatably and slidably arranged in the round hole (118) of the cylinder II (212), a clamping strip ring B (208) is fixedly arranged at one end of the cylinder C (207), and a cylinder D (210) is rotatably and slidably arranged in the round hole (118) of the cylinder II (212), the cylinder (211) is slidably mounted in the cylinder D (210), the cylinder E (213) is fixedly mounted on one end face of the cylinder D (210), the fixing ring A (214) is fixedly mounted on the cylinder D (210), one end of the spring (215) is fixedly connected with the fixing ring A (214), the other end of the spring (215) is fixedly connected with the fixing ring B (216), the fixing ring B (216) is rotatably connected with the ring II (217), the spring (215) can rotate along with the cylinder D (210) when the cylinder D (210) rotates, the cylinder D (210) is pushed to move forwards, the cylinder D (210) returns to the original position under the pulling force of the spring (215) when the cylinder D (210) does not have pushing force, and the springs (215) which are the same as the cylinder D (210) are also arranged on the cylinder B (204) and the cylinder C (207).