Constant-twist automatic air-cut-off type high-air-lock trigger

Abstract

The utility model provides a constant-torque automatic air-cut-off type high-air-lock trigger which comprises a gun type handle and a gun type main rod, the gun type handle is connected with the gun type main rod, the gun type main rod internally comprises a reversing assembly, a clutch assembly, a speed reducer assembly and an engine assembly, the gun type handle comprises a handle assembly, and the handle assembly is connected with the clutch assembly. The handle assembly comprises an air connecting nozzle, a silencer, a button switch, a reversing switch and a reversing valve. The reversing assembly, the clutch assembly, the speed reducer assembly and the engine assembly are sequentially installed in the gun type main rod from right to left. According to the bidirectional pneumatic engine, specified gaps are guaranteed between the two end faces of the rotor of the bidirectional pneumatic engine and the end faces of the front cover and the rear cover, the rotor rotates flexibly, and the situation that the power of the engine is reduced due to the fact that the loosening gaps are too large is avoided; and under the condition that the high-locking bolt is fixed by the stop pin, the high-locking nut is tightened to complete the installation of the high-locking bolt.

Description

Technical Field

[0001] The utility model belongs to the technical field of air triggers, in particular to a fixed-twist automatic air-cut-off high-lock air trigger. Background Art

[0002] A fixed-torque, high-locking gas trigger is a handheld installation tool for use with specialized fixed-torque, high-shear, self-locking bolts (hereinafter referred to as high-locking bolts). Direct-drive and slip-clutch types are the most commonly used in production. The primary limitation of these two methods is the inability to precisely control torque, which relies primarily on the operator's trigger release timing and clutch slippage. Furthermore, excessive applied torque and vibration generated during operation can damage the high-locking bolt and the working head, compromising installation or assembly quality. The noise, vibration, and reaction torque generated during operation can also be harmful to the operator.

[0003] In summary, the present invention provides a fixed-twist automatic air-cut-off high-gas-lock trigger to solve the above-mentioned problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a fixed-torque automatic air-cut-off high-lock air trigger to solve the problems in the prior art such as excessive torque applied and vibration generated during operation causing damage to the high-lock bolt and working head, affecting the quality of installation or assembly, and noise, vibration and reaction torque generated during operation also causing harm to the operator's health.

[0005] A fixed-torque automatic air-cut-off high-lock gas trigger, comprising a gun-type handle and a gun-type main rod, wherein the gun-type handle and the gun-type main rod are connected, wherein the gun-type main rod comprises a reversing assembly, a clutch assembly, a reducer assembly and an engine assembly, wherein the gun-type handle comprises a handle assembly, wherein the handle assembly comprises an air nozzle, a silencer, a button switch, a reversing switch and a reversing valve, wherein the reversing assembly, the clutch assembly, the reducer assembly and the engine assembly are sequentially installed in the gun-type main rod from right to left, wherein the clutch assembly is connected to a driving gear via a working shaft, wherein the gun-type handle is connected to one end of the gun-type main rod close to the engine assembly, wherein the engine assembly The motor assembly includes a bidirectional pneumatic engine, which is installed in a gun-type main rod. The reducer assembly includes a reducer, and the bidirectional pneumatic engine is connected to the reducer. The clutch assembly includes a clutch, and the clutch housing is threadedly connected to an internal gear sleeve. An extension assembly is installed on the end of the gun-type main rod away from the gun-type handle. The extension assembly includes an extension head shell, and a plurality of driven gears are installed in the extension head shell. The driven gears are meshed with the driving gears. An integrated stop pin is installed on the top of the extension head shell, and the surface of the integrated stop pin is sleeved with an internal hexagonal output gear.

[0006] Furthermore, the bidirectional pneumatic engine includes a bearing cover, a front cover, a rear cover, a cylinder and the outer rings of two sets of rolling bearings. The bearing cover, the front cover, the rear cover, the cylinder and the outer rings of the two sets of rolling bearings press the engine assembly tightly against the rear end face of the gun-type handle. A gap is provided between the two end faces of the rotor of the bidirectional pneumatic engine and the end faces of the front and rear covers, and the air path of the bidirectional pneumatic engine is connected to the air path of the gun-type handle through a key, and the air nozzle is connected to the bidirectional pneumatic engine through a valve and a reversing valve.

[0007] Furthermore, a torque transmission block is provided on the surface of the reducer, and the torque transmission block engages with the claws on the outer shell surface of the clutch. The torque on the bidirectional engine is transmitted to the working shaft through the reducer and the hexagonal shaft via a four-stage gear transmission.

[0008] Furthermore, the housing of the clutch is connected to the internal gear sleeve in a left-hand threaded manner.

[0009] Furthermore, a hexagonal sleeve is installed at the end of the extension head shell, and the hexagonal sleeve is sleeved on the surface of the hexagonal output gear.

[0010] Furthermore, one end of the integrated stop pin away from the inner hexagonal sleeve is connected to a return spring, and the other end of the return spring is connected to the extension head housing.

[0011] Furthermore, an integrated gear box is installed at one end of the gun-type main rod, the driving gear is installed in the integrated gear box, and an oil cup is installed at the bottom of the integrated gear box.

[0012] Furthermore, a sound-absorbing felt is installed on the inner wall of the gun-type main rod, and the sound-absorbing felt is arranged around the engine assembly.

[0013] Furthermore, a reversing button is installed on the surface of the gun-type main rod, and the reversing button is connected to the reversing switch.

[0014] Furthermore, a plug is installed at one end of the gun-type handle away from the gun-type main rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The utility model ensures a specified gap between the two end faces of the rotor of the bidirectional pneumatic engine and the end faces of the front and rear covers. The rotor rotates flexibly and the engine power will not decrease due to excessive loose gaps. The torque on the bidirectional pneumatic engine is transmitted to the driving gear through the reducer and the hexagonal shaft through the four-stage gear transmission. When the high-lock bolt is fixed by the stop pin, the high-lock nut is tightened to complete the installation of the high-lock bolt.

[0017] 2. The utility model is capable of performing reversing installation in complex installation areas and completing changes in various working angles by providing an extended head shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the extension head shell of the utility model.

[0020] In the picture:

[0021] 1. Integrated stop pin; 2. Return spring; 3. Hexagonal output gear; 4. Driven gear; 5. Driving gear; 6. Oil cup; 7. Integrated gearbox; 8. Reversing assembly; 9. Clutch assembly; 10. Reducer assembly; 11. Silencer felt; 12. Engine assembly; 13. Reversing button; 14. Handle assembly; 15. Plug; 16. Hexagonal socket. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] like Figure 1-2 As shown, the utility model provides a fixed-torque automatic air-cut-off high-lock gas trigger, including a gun-type handle and a gun-type main rod, the gun-type handle and the gun-type main rod are connected, the gun-type main rod includes a reversing assembly 8, a clutch assembly 9, a reducer assembly 10 and an engine assembly 12, the gun-type handle includes a handle assembly 14, the handle assembly 14 includes an air nozzle, a muffler, a button switch, a reversing switch and a reversing valve, the reversing assembly 8, the clutch assembly 9, the reducer assembly 10 and the engine assembly 12 are installed in the gun-type main rod from right to left in sequence, the clutch assembly 9 is connected to the driving gear 5 through the working shaft, the gun-type handle is connected to the gun-type main rod close to At one end of the engine assembly 12, the engine assembly 12 includes a bidirectional pneumatic engine, which is installed in the gun-type main rod, the reducer assembly 10 includes a reducer, and the bidirectional pneumatic engine is connected to the reducer, the clutch assembly 9 includes a clutch, and the clutch housing is threadedly connected with an internal gear sleeve. An extension assembly is installed on the end of the gun-type main rod away from the gun-type handle, and the extension assembly includes an extension head shell, and a plurality of driven gears 4 are installed in the extension head shell. The driven gears 4 are meshed with the driving gear 5, and an integrated stop pin 1 is installed on the top of the extension head shell, and the surface of the integrated stop pin 1 is sleeved with an internal hexagonal output gear 3.

[0024] As an embodiment of the present invention, a bidirectional pneumatic engine includes a bearing cover, a front cover, a rear cover, a cylinder and the outer rings of two sets of rolling bearings. The bearing cover, the front cover, the rear cover, the cylinder and the outer rings of the two sets of rolling bearings press the engine assembly 12 tightly against the rear end face of the gun-type handle. A gap is provided between the end faces of the rotor of the bidirectional pneumatic engine and the end faces of the front and rear covers, and the air path of the bidirectional pneumatic engine is connected to the air path of the gun-type handle through a key, and the air nozzle is connected to the bidirectional pneumatic engine through a valve and a reversing valve.

[0025] As an embodiment of the present invention, a torque transmission block is provided on the surface of the reducer, which engages with the claws on the outer shell surface of the clutch. The torque on the bidirectional engine is transmitted to the working shaft through the reducer and the hexagonal shaft via a four-stage gear transmission.

[0026] As an implementation mode of the present invention, the housing of the clutch is connected to the internal gear sleeve in a left-hand threaded manner.

[0027] As an embodiment of the present invention, a hexagonal sleeve 16 is installed at the end of the extension head shell, and the hexagonal sleeve 16 is sleeved on the surface of the hexagonal output gear 3.

[0028] As an embodiment of the present invention, one end of the integrated stop pin 1 away from the inner hexagonal sleeve 16 is connected to a return spring 2, and the other end of the return spring 2 is connected to the extension head housing.

[0029] As an embodiment of the present invention, an integrated gear box 7 is installed at one end of the gun-type main rod, the driving gear 5 is installed in the integrated gear box 7, and an oil cup 6 is installed at the bottom of the integrated gear box 7.

[0030] As an embodiment of the present invention, a sound-absorbing felt 11 is installed on the inner wall of the gun-type main rod, and the sound-absorbing felt 11 is arranged around the engine component 12.

[0031] As an embodiment of the present invention, a reversing button 13 is installed on the surface of the gun-type main rod, and the reversing button 13 is connected to the reversing switch.

[0032] As an embodiment of the present invention, a plug 15 is installed at one end of the gun-type handle away from the gun-type main rod.

[0033] Specific working principle:

[0034] The correct matching of the two-way pneumatic engine and the air passage on the gun-type handle is mainly guaranteed by the key. The gun-type handle is equipped with an air nozzle, a muffler, a button switch, a reversing switch and a reversing valve.

[0035] The clutch housing is connected to the internal gear sleeve in a left-hand threaded manner.

[0036] During assembly, the internal gear sleeve (left-hand thread) must be tightened. This allows the engine assembly to be pressed against the rear end of the pistol grip, using the reducer's spacer, disc gasket, the bearing caps, front and rear caps, cylinder, and the outer rings of the front and rear rolling bearings. This ensures the required clearance between the rotor ends and the front and rear caps, ensuring the rotor rotates flexibly without losing power due to excessive loose clearance.

[0037] When the pushbutton is pressed, the valve opens, and compressed air is fed from the air nozzle through the valve and reversing valve into the bidirectional pneumatic motor, driving its rotation. The bidirectional pneumatic motor then drives the reducer, and the torque transfer block on the reducer engages with the claw on the clutch housing, driving the clutch. The torque from the bidirectional pneumatic motor is then transmitted to the working head via the reducer and the hexagonal shaft via a four-stage gear transmission. With the high-lock bolt secured by the stop pin, tighten the high-lock nut to complete installation.

[0038] During use, the output torque must be set according to the assembly requirements. Turn the protective cover to find the adjustment hole, insert the included adjustment wrench into the adjustment hole, and turn clockwise to reduce the torque, and vice versa to increase the torque. Place the hexagonal slot of the output gear into the hexagonal part of the pre-tightened high-lock nut, and turn the tool so that the pentagonal / hexagonal rod of the stop pin inserts into the pentagonal / hexagonal hole of the high-lock bolt. Set the reversing switch to the forward position, pull the trigger, and tighten the high-lock nut onto the workpiece. Rotate the work head to separate the output hexagonal slot and the high-lock nut to complete the installation. To remove the high-lock nut, set the reversing switch to the reverse position and pull the trigger to remove the high-lock nut from the tightening position. For complex installation areas, you can pull the reversing assembly jacket backward, turn the working head, and then loosen the jacket to lock the working head to complete the change of various working head angles.

[0039] The implementation methods of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A fixed-torque automatic shut-off high-lock gas trigger, comprising a gun-type handle and a gun-type main rod, wherein the gun-type handle and the gun-type main rod are connected, wherein the gun-type main rod comprises a reversing assembly (8), a clutch assembly (9), a speed reducer assembly (10) and an engine assembly (12), wherein the gun-type handle comprises a handle assembly (14), wherein the handle assembly (14) comprises an air nozzle, a muffler, a button switch, a reversing switch and a reversing valve, and wherein: The reversing assembly (8), clutch assembly (9), speed reducer assembly (10) and engine assembly (12) are sequentially installed in the gun-type main rod from right to left. The clutch assembly (9) is connected to a driving gear (5) via a working shaft. The gun-type handle is connected to one end of the gun-type main rod close to the engine assembly (12). The engine assembly (12) includes a bidirectional pneumatic engine, which is installed in the gun-type main rod. The speed reducer assembly (10) includes a speed reducer, which is connected to the speed reducer. The clutch assembly (9) includes a clutch, and the housing of the clutch is threadedly connected to an internal gear sleeve. An extension assembly is installed on the end of the gun-type main rod away from the gun-type handle. The extension assembly includes an extension head shell. A plurality of driven gears (4) are installed in the extension head shell. The driven gears (4) are meshed with the driving gear (5). An integrated stop pin (1) is installed on the top of the extension head shell. The surface of the integrated stop pin (1) is sleeved with an internal hexagonal output gear (3).

2. The fixed-torque automatic shut-off high-gas lock trigger according to claim 1, characterized in that: The bidirectional pneumatic engine comprises a bearing cover, a front cover, a rear cover, a cylinder and two sets of outer rings of rolling bearings. The bearing cover, the front cover, the rear cover, the cylinder and the outer rings of the two sets of rolling bearings press the engine assembly (12) against the rear end face of the gun-type handle. Gaps are provided between the two end faces of the rotor of the bidirectional pneumatic engine and the end faces of the front and rear covers. The bidirectional pneumatic engine is connected to the air passage of the gun-type handle through a key. The air nozzle is connected to the bidirectional pneumatic engine through a valve and a reversing valve.

3. The fixed-torque automatic shut-off high-gas lock trigger according to claim 1, characterized in that: The surface of the reducer is provided with a torque transmission block, which engages with the claws on the outer shell surface of the clutch. The torque on the bidirectional engine is transmitted to the working shaft through the reducer and the hexagonal shaft via a four-stage gear transmission.

4. The fixed-torque automatic shut-off high-gas lock trigger according to claim 1, characterized in that: The housing of the clutch is connected to the internal gear sleeve in a left-hand threaded manner.

5. The fixed-torque automatic shut-off high-gas lock trigger according to claim 1, characterized in that: An inner hexagonal sleeve (16) is installed at the end of the extension head shell, and the inner hexagonal sleeve (16) is sleeved on the surface of the inner hexagonal output gear (3).

6. The fixed-torque automatic shut-off high-gas lock trigger according to claim 1, characterized in that: One end of the integrated stop pin (1) away from the inner hexagonal sleeve (16) is connected to a return spring (2), and the other end of the return spring (2) is connected to the extension head housing.

7. The fixed-torque automatic shut-off high-gas lock trigger according to claim 1, characterized in that: An integrated gear box (7) is installed at one end of the gun-type main rod, the driving gear (5) is installed in the integrated gear box (7), and an oil cup (6) is installed at the bottom of the integrated gear box (7).

8. The fixed-torque automatic shut-off high-gas lock trigger according to claim 1, characterized in that: A sound-absorbing felt (11) is installed on the inner wall of the gun-type main rod, and the sound-absorbing felt (11) is arranged around the engine component (12).

9. The fixed-torque automatic shut-off high-gas lock trigger according to claim 1, characterized in that: A reversing button (13) is installed on the surface of the gun-type main rod, and the reversing button (13) is connected to a reversing switch.

10. The fixed-torque automatic shut-off high-gas lock trigger according to claim 1, characterized in that: A plug (15) is installed at one end of the gun-type handle away from the gun-type main rod.

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