An impact-resistant pneumatic impact wrench

Abstract

This utility model relates to the field of pneumatic impact wrenches and discloses an impact-resistant pneumatic impact wrench, including a wrench body and a socket. A disassembly and assembly assembly is installed inside the socket, and an exhaust assembly is installed at the rear of the wrench body. The disassembly and assembly assembly includes two limiting grooves, a driven shaft, and a driving shaft. The two limiting grooves are respectively formed on the outer surface of the socket. The driven shaft and the driving shaft are both installed inside the socket. A first fixing seat is fixedly installed at the rear of the driven shaft. Two positioning grooves are formed on the outer surface of the first fixing seat, and a first screw hole is formed on the inner wall of each positioning groove. A driven block is installed inside each of the two positioning grooves. The driving block and the driven block facilitate disassembly, assembly, and replacement, preventing impact wear from affecting transmission. The guide tube and sealing cover allow dust to be blown away from the surface of the connecting parts while rotating the parts, facilitating interchangeability.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic impact wrenches, specifically an impact-resistant pneumatic impact wrench. Background Technology

[0002] Pneumatic impact wrenches are tools that use compressed air as a power source. They are mainly used to tighten or loosen fasteners such as bolts and nuts. During the impact process, the internal compressed air drives the impact block to generate high-speed rotation and impact motion, thereby achieving high torque output.

[0003] The publication number CN214352090U discloses an impact-resistant pneumatic impact wrench, which includes a wrench body, a drive shaft, a handle, and a switch button. The front and rear ends of the handle are both fixedly provided with a first telescopic rod and a second telescopic rod.

[0004] The aforementioned wrench effectively prevents the pneumatic wrench from falling off. However, under long-term impact, the active and passive blocks used for impact are prone to wear, affecting the transmission. It is not convenient to directly disassemble and replace them. Furthermore, during use, it is not convenient to use the exhaust air to blow away dust from the surface of the parts connection. Summary of the Invention

[0005] The purpose of this invention is to provide an impact-resistant pneumatic impact wrench to solve the technical problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An impact-resistant pneumatic impact wrench includes a wrench body and a socket. A disassembly / assembly assembly is installed inside the socket. An exhaust assembly is installed at the rear of the wrench body. The disassembly / assembly assembly includes two limiting grooves, a driven shaft, and a driving shaft. The two limiting grooves are respectively formed on the outer surface of the socket. The driven shaft and the driving shaft are both installed inside the socket. A first fixing seat is fixedly installed at the rear of the driven shaft. Two positioning grooves are formed on the outer surface of the first fixing seat. A first screw hole is formed on the inner wall of each positioning groove. A driven block is installed inside each of the two positioning grooves. A first bolt is connected between the interior of the driven block and the first screw hole. Two second fixing seats are fixedly installed at the front of the driving shaft. A driving block is installed between the two second fixing seats near the top and bottom. A second screw hole is formed at the upper and lower ends of each of the two second fixing seats. A second bolt is connected between the interior of the driving block and the second screw hole.

[0007] Preferably, the drive shaft is connected to the pneumatic output shaft, the driven shaft is connected to the wrench output shaft, and the drive shaft and the driven shaft are located on the same axis.

[0008] Preferably, the passive block and the positioning groove are engaged with each other, and the inner end of the first bolt is threadedly connected to the first screw hole.

[0009] Preferably, the two active blocks are connected to the two second fixed seats, the two active blocks are symmetrical to each other, and the second bolt and the second screw hole are connected by threads.

[0010] Preferably, the exhaust assembly includes a fixed cover, a sealing cover, and a conduit. The fixed cover is fixedly installed at the rear of the wrench body. The conduit is connected through to the top of the fixed cover and a nozzle is installed at the front end of the conduit. The sealing cover is connected to the rear of the fixed cover and a knob is fixedly installed at the rear of the sealing cover. The outer wall of the sealing cover is provided with a threaded groove, and several exhaust holes are opened through the outer wall of the sealing cover.

[0011] Preferably, the conduit is in communication with the interior of the fixing cover.

[0012] Preferably, the sealing cover is threadedly connected to the fixing cover via a threaded groove, and several vent holes are arranged in a circumferential manner.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1) This pneumatic impact wrench, by setting up a disassembly and assembly component, the passive block is connected by the first bolt and the active block is connected by the second bolt. Through two limit grooves, it is easy to disassemble and replace the active block and the passive block, and avoid the transmission being affected by impact wear.

[0014] 2) This pneumatic impact wrench, by setting an exhaust component, allows the sealing cover to slide forward and retract through the threaded groove. Through the conduit, it can blow away dust from the surface of the connecting parts while rotating the parts. The rotating sealing cover slides backward and extends, allowing air to be directly discharged through the exhaust hole, which is convenient for switching between uses. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an impact-resistant pneumatic impact wrench according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the disassembly and assembly components in an embodiment of this utility model; Figure 3 This is a side view of the disassembly and assembly components in an embodiment of this utility model; Figure 4 This is a schematic diagram of the passive shaft in an embodiment of the present invention; Figure 5 This is a schematic diagram of the front structure of the drive shaft in an embodiment of this utility model; Figure 6 This is a schematic diagram of the internal structure of the exhaust assembly in an embodiment of this utility model.

[0016] In the diagram: 1. Wrench body; 2. Socket; 3. Assembly / disassembly assembly; 4. Exhaust assembly; 5. Limiting groove; 6. Passive shaft; 7. Active shaft; 8. First fixed seat; 9. Positioning groove; 10. First screw hole; 11. Passive block; 12. First bolt; 13. Second fixed seat; 14. Second screw hole; 15. Active block; 17. Second bolt; 18. Fixed cover; 19. Sealing cover; 20. Guide tube; 21. Nozzle; 22. Knob; 23. Threaded groove; 24. Exhaust hole. Detailed Implementation

[0017] 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. Example 1

[0018] Combination Figures 1-6 An impact-resistant pneumatic impact wrench includes a wrench body 1 and a socket 2. The socket 2 has a disassembly and assembly assembly 3 installed inside, and an exhaust assembly 4 is installed at the rear of the wrench body 1.

[0019] See Figures 2-5 Furthermore, the disassembly and assembly assembly 3 includes two limiting grooves 5, a passive shaft 6, and an active shaft 7. The two limiting grooves 5 are respectively opened on the outer surface of the sleeve 2. The passive shaft 6 and the active shaft 7 are both installed inside the sleeve 2. A first fixing seat 8 is fixedly installed at the rear of the passive shaft 6. Two positioning grooves 9 are opened on the outside of the first fixing seat 8. A first screw hole 10 is opened on the inner wall of the positioning groove 9. A passive block 11 is installed inside the two positioning grooves 9. A first bolt 12 is connected between the inside of the passive block 11 and the first screw hole 10. Two second fixing seats 13 are fixedly installed at the front of the active shaft 7. An active block 15 is installed between the two second fixing seats 13 near the top and bottom. A second screw hole 14 is opened at the upper and lower ends of the two second fixing seats 13. A second bolt 17 is connected between the inside of the active block 15 and the second screw hole 14.

[0020] The drive shaft 7 is connected to the pneumatic output shaft, and the driven shaft 6 is connected to the wrench output shaft. The drive shaft 7 and the driven shaft 6 are located on the same axis. The drive shaft 7 drives the driven shaft 6 to rotate, and provides impact through the drive block 15 and the driven block 11.

[0021] The passive block 11 is engaged with the positioning groove 9, and the inner end of the first bolt 12 is threadedly connected to the first screw hole 10. The passive block 11 is fixed by the first bolt 12.

[0022] Two active blocks 15 are connected to two second fixed seats 13. The two active blocks 15 are symmetrical to each other. The second bolt 17 and the second screw hole 14 are connected by threads. The active blocks 15 are connected and fixed by the second bolt 17.

[0023] Specifically, the active block 15 is inserted into the positioning groove 9 and fixed by the connection of the first bolt 12 and the first screw hole 10. The active block 15 is connected to the two second fixed seats 13 and fixed by the connection of the second bolt 17 and the second screw hole 14. This facilitates the disassembly and replacement of the active block 15 and the passive block 11 and avoids the transmission being affected by impact wear. Example 2

[0024] See Figure 6 Furthermore, based on Embodiment 1, the exhaust assembly 4 includes a fixed cover 18, a sealing cover 19, and a conduit 20. The fixed cover 18 is fixedly installed at the rear of the wrench body 1. The conduit 20 is connected through to the top of the fixed cover 18. A nozzle 21 is installed at the front end of the conduit 20. The sealing cover 19 is connected to the rear of the fixed cover 18. A knob 22 is fixedly installed at the rear of the sealing cover 19. A threaded groove 23 is provided on the outer wall of the sealing cover 19. Several exhaust holes 24 are opened through the outer wall of the sealing cover 19.

[0025] The conduit 20 is interconnected with the interior of the fixed cover 18. The conduit 20 is used to deliver the exhausted air to the nozzle 21, through which the air is sprayed to blow away dust from the surface of the connecting parts.

[0026] The sealing cover 19 is threadedly connected to the fixed cover 18 via the threaded groove 23, and several vent holes 24 are arranged around it. The sealing cover 19 slides out backward and exhausts air through the vent holes 24.

[0027] Specifically, the sealing cover 19 slides forward to retract the air discharged from the wrench body 1, which is then transported to the nozzle 21 through the conduit 20 and sprayed out. When rotating the parts, it can blow away the dust on the surface of the parts connection. The sealing cover 19 slides backward to extend, and the air discharged from the wrench body 1 is directly discharged through the exhaust hole 24 for easy switching.

[0028] In actual operation, the impeller inside the wrench body 1 rotates pneumatically, causing the drive shaft 7 to drive the drive block 15 to rotate. The drive block 15 pushes the passive block 11 to rotate, causing the passive shaft 6 to drive the wrench component to rotate. The impact is provided through the disengagement and engagement between the drive block 15 and the passive block 11. During disassembly and assembly, the two limiting grooves 5 in the sleeve 2 are used to disassemble and assemble the active block 15 and the passive block 11. When replacing and installing, the installation position of the active block 15 is rotated to the limiting groove 5, and the active block 15 is inserted into the positioning groove 9. It is fixed by the connection of the first bolt 12 and the first screw hole 10. Then, the installation position of the active block 15 is rotated to the limiting groove 5, and it is fixed by the connection of the second bolt 17 and the second screw hole 14. This facilitates the disassembly and replacement of the active block 15 and the passive block 11, and avoids the transmission being affected by impact wear. The rotation of the drive shaft 7 causes the active block 15 to push the passive block 11 to rotate, and drives the passive shaft 6 to rotate. When venting, rotating the knob 22 causes the sealing cover 19 to rotate. The sealing cover 19 slides forward and retracts through the threaded groove 23, thereby sealing the vent hole 24. The air discharged from the wrench body 1 is transported to the nozzle 21 through the conduit 20 and sprayed out. When rotating the parts, it can blow away the dust on the surface of the parts connection. By rotating the knob 22, the sealing cover 19 slides backward and extends, thereby opening the vent hole 24. The air discharged from the wrench body 1 is directly discharged through the vent hole 24 for easy switching.

[0029] The control method involved in this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical mechanisms, the control method and circuit connection will not be explained in detail.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant pneumatic impact wrench, comprising a wrench body (1) and a socket (2), characterized in that: The sleeve (2) is equipped with a disassembly assembly (3), and the wrench body (1) is equipped with an exhaust assembly (4) at the rear. The disassembly / assembly assembly (3) includes two limiting grooves (5), a passive shaft (6), and a driving shaft (7). The two limiting grooves (5) are respectively opened on the outer surface of the sleeve (2). The passive shaft (6) and the driving shaft (7) are both installed inside the sleeve (2). A first fixing seat (8) is fixedly installed on the rear part of the passive shaft (6). Two positioning grooves (9) are opened on the outside of the first fixing seat (8). A first screw hole (10) is opened on the inner wall of the positioning groove (9). The two positioning grooves (9) are both installed inside the sleeve (2). There is a passive block (11), and a first bolt (12) is connected between the interior of the passive block (11) and the first screw hole (10). Two second fixed seats (13) are fixedly installed at the front of the drive shaft (7). A drive block (15) is installed between the two second fixed seats (13) near the top and bottom. A second screw hole (14) is opened at the upper and lower ends of the two second fixed seats (13). A second bolt (17) is connected between the interior of the drive block (15) and the second screw hole (14).

2. The impact-resistant pneumatic impact wrench according to claim 1, characterized in that: The active shaft (7) is connected to the pneumatic output shaft, and the passive shaft (6) is connected to the wrench output shaft. The active shaft (7) and the passive shaft (6) are located on the same axis.

3. The impact-resistant pneumatic impact wrench according to claim 1, characterized in that: The passive block (11) and the positioning groove (9) are engaged with each other, and the inner end of the first bolt (12) is threadedly connected to the first screw hole (10).

4. The impact-resistant pneumatic impact wrench according to claim 1, characterized in that: The two active blocks (15) are connected to the two second fixed seats (13), the two active blocks (15) are symmetrical to each other, and the second bolt (17) and the second screw hole (14) are connected by threads.

5. The impact-resistant pneumatic impact wrench according to claim 1, characterized in that: The exhaust assembly (4) includes a fixed cover (18), a sealing cover (19), and a conduit (20). The fixed cover (18) is fixedly installed at the rear of the wrench body (1). The conduit (20) is connected through to the top of the fixed cover (18). A nozzle (21) is installed at the front end of the conduit (20). The sealing cover (19) is connected to the rear of the fixed cover (18). A knob (22) is fixedly installed at the rear of the sealing cover (19). The outer wall of the sealing cover (19) is provided with a threaded groove (23). Several exhaust holes (24) are opened through the outer wall of the sealing cover (19).

6. The impact-resistant pneumatic impact wrench according to claim 5, characterized in that: The conduit (20) communicates with the interior of the fixing cover (18).

7. The impact-resistant pneumatic impact wrench according to claim 5, characterized in that: The sealing cap (19) is threadedly connected to the fixed cover (18) via a threaded groove (23), and several vent holes (24) are arranged around it.

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