A portable pneumatic rivet gun and a riveting method

Abstract

The present invention discloses a portable pneumatic riveting gun and a riveting method, which include a transverse member arranged horizontally and a longitudinal member arranged vertically. The transverse member includes a hollow gun head adapter, a hollow gun body, a hollow gun body piston and a hollow nail retaining cylinder. The hollow gun body forms a first cavity, and the hollow gun body piston forms a second cavity. The longitudinal member includes a reset mechanism. The longitudinal member further includes an oil storage handle, a hydraulic booster cylinder, a cylinder, a booster piston rod and a cylinder piston. The oil storage handle is provided with a fourth cavity, and the reset mechanism and the hydraulic booster cylinder are located in the fourth cavity. The lower end of the booster piston rod is connected to the cylinder piston, and the upper end is located in the hydraulic booster cylinder. The cylinder piston divides the cylinder into a rod chamber and a rodless chamber. The portable pneumatic riveting gun of the present invention can provide a large riveting force, and the tool has a light weight and can be operated with one hand, and is suitable for the riveting production site with a narrow operation space.

Description

Technical Field

[0001] The present invention relates to the field of fastening, and particularly to a portable pneumatic rivet gun. Background Art

[0002] Currently, the connection and fastening between mechanical devices and various equipment are carried out by riveting. Compared with the ordinary bolt fastening method, its advantages are that the process equipment is simple; the process is relatively easy to control and the quality is stable; the riveted structure is vibration-resistant and impact-resistant, and is not prone to stress concentration. The rivet has a certain airtightness after riveting and is widely used in industries such as aerospace, railway, automobile manufacturing, and wind power. The riveting of rivets requires rivet tools with certain requirements. Especially in high-requirement riveting occasions, the rivet tools will directly affect the riveting quality and are directly related to the qualification rate of the final product. Existing ordinary rivet guns are only suitable for ordinary aluminum rivets, and the riveting force and the rivet gripping strength are too small to be applied in high-requirement riveting production sites (such as high-strength rivets like titanium alloy). The existing high-strength rivet riveting is to connect a booster pump to an ordinary rivet gun for riveting. On the one hand, the addition of the booster pump increases the occupied volume of the rivet tool. On the other hand, when riveting, the rivet gun is held by hand, and the addition of the booster pump and the like greatly increases the weight of the rivet gun. Summary of the Invention

[0003] In view of the above defects, the present invention provides a portable pneumatic rivet gun, which can provide a relatively large riveting force.

[0004] The technical solution is: a portable pneumatic rivet gun, including a horizontally arranged transverse member and a vertically arranged longitudinal member. The transverse member includes a hollow gun head adapter, a hollow gun body, a hollow gun body piston, and a hollow nail retaining cylinder. The hollow gun body forms a first cavity, and the hollow gun body piston forms a second cavity. The longitudinal member includes a reset mechanism. The longitudinal member further includes an oil storage handle, a hydraulic booster cylinder, a cylinder, a booster piston rod, and a cylinder piston. The oil storage handle is provided with a fourth cavity. The reset mechanism and the hydraulic booster cylinder are located in the fourth cavity. The lower end of the booster piston rod is connected to the cylinder piston, and the upper end is located in the hydraulic booster cylinder. The cylinder piston divides the cylinder into a rod chamber and a rodless chamber.

[0005] Preferably, the upper end of the oil storage handle is connected to the hollow gun body, and the lower end is connected to the cylinder; one end of the hollow gun body is connected to the hollow gun head adapter, and the other end is connected to the hollow nail retaining cylinder. The piston of the hollow gun body is composed of a gun body piston body, a front rod of the gun body piston, and a rear rod of the gun body piston. The gun body piston body is located between the front rod of the gun body piston and the rear rod of the gun body piston. The second cavity is composed of a front cavity of the second cavity, a middle cavity 36 of the second cavity, and a rear cavity of the second cavity. The front cavity of the second cavity corresponds to the front rod of the gun body piston, the middle cavity 36 of the second cavity corresponds to the gun body piston body, and the rear cavity of the second cavity corresponds to the rear rod of the gun body piston. The diameter of the front cavity of the second cavity is equal to the diameter of the middle cavity 36 of the second cavity. The minimum diameter of the rear cavity of the second cavity is greater than the diameter of the front cavity of the second cavity, and the diameter of the rear cavity of the second cavity decreases from the rear to the front; the first cavity is composed of a front cavity of the first cavity, a middle cavity of the first cavity, and a rear cavity of the first cavity. The diameter of the rear cavity of the first cavity is greater than the diameter of the front cavity of the first cavity, and the diameter of the rear cavity of the first cavity is greater than the middle cavity of the first cavity; the gun body piston body and the rear rod of the gun body piston are located in the rear cavity of the first cavity, and the front rod of the gun body piston passes through the middle cavity and the front cavity of the first cavity; the hollow gun body is provided with a longitudinal element connecting portion and a third cavity, and the third cavity communicates with the rear cavity of the first cavity. The longitudinal element connecting portion is composed of the cavity wall of the third cavity. One end of the reset mechanism is connected to the longitudinal element connecting portion, and the other end is connected to the hydraulic booster cylinder. The cylinder piston is located in the cylinder.

[0006] Preferably, the end of the front rod of the gun body piston is connected to the internal thread of the pull head for installing rivets of corresponding specifications through an external thread, and the hollow gun head adapter is threadedly connected to the internal thread of the hollow gun body through an external thread.

[0007] Preferably, the transverse member further includes a gun body end cap and a nail retaining cylinder bushing. The gun body end cap is threadedly connected to the hollow gun body. The front end of the hollow nail retaining cylinder passes through the gun body end cap and contacts the rear end of the rear rod of the gun body piston. The front end of the nail retaining cylinder bushing is located in the rear cavity of the second cavity, and the rear end is located in the hollow nail retaining cylinder.

[0008] Preferably, the reset mechanism includes a reset cylinder, a reset piston, and a reset piston spring. The reset piston and the reset piston spring are located in the reset cylinder.

[0009] Preferably, the hydraulic booster cylinder is further connected with a booster cylinder end cap, and the booster cylinder end cap is further connected with a booster cylinder end cap locking ring. The booster cylinder end cap is locked to the cylinder through the booster cylinder end cap locking ring; the bottom of the cylinder is provided with a cylinder head and a cylinder cover plate. The cylinder head is located between the cylinder piston and the cylinder cover plate.

[0010] Preferably, the portable pneumatic rivet gun further includes a switch mechanism and a reversing mechanism. The reversing mechanism is connected to the cylinder and includes a reversing support, a reversing valve body, and a reversing valve core. The reversing support is provided with a fifth cavity, the reversing valve body is located in the fifth cavity, and the reversing valve core is located in the reversing valve body. The switch mechanism includes a button and a switch channel. The switch channel is provided on the wall of the oil storage handle and is communicated with the fifth cavity. The reversing support is connected with an air inlet joint, and the air inlet joint is communicated with the reversing valve body.

[0011] Preferably, the reversing mechanism is further provided with a valve core filter disc and a valve core return spring; the reversing support is further provided with a flow control screw, a support end cover, and a support filter disc.

[0012] Preferably, the hollow gun body is further provided with an oil filling hole, and a sealing bolt is used for sealing the oil filling hole. The oil filling hole is communicated with the fourth cavity, and a groove is formed on the lower wall of the return cylinder.

[0013] Preferably, the pressure increasing piston rod is provided with a pressure increasing piston head, and the area S2 of the cylinder piston - the area S1 of the pressure increasing piston head > 0.

[0014] The present invention also provides a riveting method for high-strength rivets.

[0015] The technical solution is: a riveting method for high-strength rivets, and this riveting method for high-strength rivets uses the above-mentioned portable pneumatic rivet gun.

[0016] The present invention forms a pressure increasing system by the cylinder, the cylinder piston, the oil storage handle, and the hydraulic pressure increasing cylinder body. It can provide a large riveting force without adding a pressure increasing pump. The gas can be conveniently reversed through the reversing mechanism, and the hydraulic oil can be timely supplemented through the oil filling system to ensure the normal operation of the rivet gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic perspective view of the portable pneumatic rivet gun of the present invention;

[0018] Figure 2 is an exploded view schematic diagram of the portable pneumatic rivet gun of the present invention;

[0019] Figure 3 is a schematic front view of the portable pneumatic rivet gun of the present invention;

[0020] Figure 4 is a schematic sectional view of the portable pneumatic rivet gun of the present invention;

[0021] Figure 5 is a schematic sectional view of the piston of the hollow gun body of the present invention;

[0022] Figure 6 is a schematic perspective view of the hollow gun body of the present invention;

[0023] Figure 7 Schematic cross-sectional view of the hollow gun body of the present invention;

[0024] Figure 8 is Figure 4 the enlarged view of part A of

[0025] Figure 9 is Figure 4 the enlarged view of part B of

[0026] Figure 10 is Figure 4 the enlarged view of part C of

[0027] Figure 11 is Figure 4 the enlarged view in the D-D direction of

[0028] Figure 12 Schematic three-dimensional structure diagram of the pressurizing piston rod of the present invention;

[0029] Figure 13 Schematic three-dimensional structure diagram of the reset cylinder of the present invention;

[0030] Figure 14 Schematic three-dimensional structure diagram of the commutation valve body of the present invention;

[0031] Figure 15 Schematic three-dimensional structure diagram of the commutation valve core of the present invention;

[0032] In the figure, 1 is a hollow gun head adapter, 2 is a hollow gun body, 21 is a first cavity, 22 is a front cavity of the first cavity, 23 is a middle cavity of the first cavity, 24 is a rear cavity of the first cavity, 25 is a third cavity, 26 is a longitudinal element connecting part, 27 is an oil filling hole, 3 is a piston of the hollow gun body, 31 is a second cavity, 32 is a piston body of the gun body, 33 is a front rod of the gun body piston, 34 is a rear rod of the gun body piston, 35 is a front cavity of the second cavity, 36 is a middle cavity of the second cavity, 37 is a rear cavity of the second cavity, 4 is a hollow nail retaining cylinder, 5 is a tail cover of the gun body, 6 is a bushing of the nail retaining cylinder, 7 is a sealing bolt, 8 is an oil storage handle, 81 is a fourth cavity, 9 is a return cylinder, 10 is a return piston, 11 is a hydraulic booster cylinder, 12 is a cylinder, 13 is a booster piston rod, 131 is a booster piston head, 14 is a cylinder piston, 15 is a return piston spring, 16 is a reversing mechanism, 161 is a reversing support, 1611 is a support fixing bolt, 1612 is a support end cover, 1613 is a support filter, 1614 is a flow control screw, 162 is a reversing valve body, 163 is a reversing valve core, 1631 is a valve core filter, 1632 is a valve core return spring, 164 is a fifth cavity, 165 is an air inlet joint, 17 is a button, 18 is a switch channel, 101 is a tail cover of the booster cylinder body, 102 is a connecting bolt, 103 is a handle fixing bolt, 104 is a positioning pin, 105 is a locking ring of the tail cover of the booster cylinder body, 106 is a cylinder head of the cylinder, 107 is a cylinder cover plate, 108 is a piston fixing nut. Detailed implementation mode

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "provided with", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Please refer to Figures 1 - 15 , a portable pneumatic rivet gun, comprising a transverse member arranged horizontally and a longitudinal member arranged vertically. The transverse member includes a hollow gun head adapter 1, a hollow gun body 2, a hollow gun body piston 3, and a hollow nail retaining cylinder 4. The hollow gun body 2 forms a first cavity 21, and the hollow gun body piston 3 forms a second cavity 31. The longitudinal member includes an oil storage handle 8, a reset mechanism, a hydraulic booster cylinder 11, a cylinder 12, a booster piston rod 13, and a cylinder piston 14. The oil storage handle 8 is provided with a fourth cavity 81. The upper end of the oil storage handle 8 is connected to the hollow gun body 2, and the lower end is connected to the cylinder 12. One end of the hollow gun body 2 is connected to the hollow gun head adapter 1, and the other end is connected to the hollow nail retaining cylinder 4. The hollow gun body piston 3 is composed of a gun body piston body 32, a gun body piston front rod 33, and a gun body piston rear rod 34. The gun body piston body 32 is located between the gun body piston front rod 33 and the gun body piston rear rod 34. The second cavity 31 is composed of a second cavity front chamber 35, a second cavity middle chamber 36, and a second cavity rear chamber 37. The second cavity front chamber 35 corresponds to the gun body piston front rod 33, the second cavity middle chamber 36 corresponds to the gun body piston body 32, and the second cavity rear chamber 37 corresponds to the gun body piston rear rod 34. The diameter of the second cavity front chamber 35 is equal to the diameter of the second cavity middle chamber 36. The minimum diameter of the second cavity rear chamber 37 is greater than the diameter of the second cavity front chamber 35, and the diameter of the second cavity rear chamber 37 decreases from the rear to the front. The first cavity 21 is composed of a first cavity front chamber 22, a first cavity middle chamber 23, and a first cavity rear chamber 24. The diameter of the first cavity rear chamber 24 is greater than the diameter of the first cavity front chamber 22, and the diameter of the first cavity rear chamber 24 is greater than the diameter of the first cavity middle chamber 23. The gun body piston body 32 and the gun body piston rear rod 34 are located in the first cavity rear chamber 24, and the gun body piston front rod 33 passes through the first cavity middle chamber 23 and the first cavity front chamber 22. The hollow gun body 2 is provided with a longitudinal element connection portion 26 and a third cavity 25, and the third cavity 25 communicates with the first cavity rear chamber 24. The longitudinal element connection portion 26 is composed of the wall of the third cavity 25. The reset mechanism and the hydraulic booster cylinder 11 are located in the fourth cavity 81. One end of the reset mechanism is connected to the longitudinal element connection portion 26, and the other end is connected to the hydraulic booster cylinder 11. The cylinder piston 14 is located in the cylinder 12. The lower end of the booster piston rod 13 is connected to the cylinder piston 14, and the upper end is located in the hydraulic booster cylinder 11. The cylinder piston 14 divides the cylinder 12 into a rod chamber and a rodless chamber.

[0037] In one or more specific embodiments, the end of the front rod of the gun body piston 33 is connected to the internal thread of the pull head for rivets of corresponding specifications through external threads, and the hollow gun head adapter 1 is threadedly connected to the internal thread of the hollow gun body 2 through external threads.

[0038] In one or more specific embodiments, the transverse member further includes a gun body end cover 5 and a nail retaining cylinder bushing 6. The gun body end cover 5 is threadedly connected to the hollow gun body 2. The front end of the hollow nail retaining cylinder 4 passes through the gun body end cover 5 and contacts the rear end of the rear rod of the gun body piston 34. The front end of the nail retaining cylinder bushing 6 is located in the rear cavity 37 of the second cavity, and the rear end is located in the hollow nail retaining cylinder 4.

[0039] In one or more specific embodiments, the reset mechanism includes a reset cylinder 9, a reset piston 10, and a reset piston spring 15. The reset piston 10 and the reset piston spring 15 are located in the reset cylinder 9.

[0040] In one or more specific embodiments, the oil storage handle 8 is connected to the hollow gun body 2 through a connecting bolt 102, and is connected to the cylinder 12 through a handle fixing bolt 103 and a positioning pin 104.

[0041] In one or more specific embodiments, the hydraulic booster cylinder 11 is further connected to a booster cylinder body end cover 101. The booster cylinder body end cover 101 is further connected to a booster cylinder body end cover locking ring 105. The booster cylinder body end cover 101 is locked to the cylinder 12 through the booster cylinder body end cover locking ring 105.

[0042] In one or more specific embodiments, a cylinder head 106 and a cylinder cover plate 107 are installed at the bottom of the cylinder 12. The cylinder head 106 is located between the cylinder piston 14 and the cylinder cover plate 107. The piston fixing nut 108 is used to fix the booster piston rod 13 to the cylinder piston 14.

[0043] In one or more specific embodiments, the portable pneumatic rivet gun further includes a switch mechanism and a reversing mechanism 16. The reversing mechanism 16 is connected to the cylinder 12. The reversing mechanism 16 includes a reversing support 161, a reversing valve body 162, and a reversing valve core 163. The reversing support 161 is provided with a fifth cavity 164. The reversing valve body 162 is located in the fifth cavity 164, and the reversing valve core 163 is located in the reversing valve body 162. The switch mechanism includes a button 17 and a switch channel 18. The switch channel 18 is provided on the wall of the oil storage handle 8. The switch channel 18 communicates with the fifth cavity 164. The reversing support 161 is connected with an air inlet joint 165, and the air inlet joint 165 communicates with the reversing valve body 162.

[0044] In one or more specific embodiments, the reversing support 161 is fixed to the cylinder 12 through a support fixing bolt 1611.

[0045] In one or more specific embodiments, the commutation mechanism 16 is further provided with a valve core filter sheet 1631 and a valve core return spring 1632. The valve core filter sheet 1631 is used to filter the passing gas. The valve core return spring 1632 is used to return the commutation valve core 163.

[0046] In one or more specific embodiments, the commutation support 161 is further provided with a flow control screw 1614, a support end cover 1612 and a support filter sheet 1613.

[0047] In one or more specific embodiments, the hollow gun body 2 is further provided with an oil filling hole 27. The sealing bolt 7 is used to seal the oil filling hole 27. The oil filling hole 27 communicates with the fourth cavity 81. A groove is formed on the lower wall of the return cylinder 9.

[0048] In one or more specific embodiments, the supercharging piston rod 13 is provided with a supercharging piston head 131, and the area S2 of the cylinder piston 14 - the area S1 of the supercharging piston head 131 > 0.

[0049] In the present invention, the air cylinder 12, the air cylinder piston 14, the oil storage handle 8, and the hydraulic booster cylinder 11 together form a boosting system. There is an area difference between the area S2 of the air cylinder piston 14 and the area S1 of the boosting piston head 131, so there is a boosting ratio. The air pressure is boosted due to the area difference to generate a corresponding hydraulic pressure, which drives the hollow gun body piston 3 to form a certain pulling force and pushing force. The internal reversing valve body 162, the reversing valve core 163, and the valve core return spring 1632 in the reversing support 161 cooperate with each other, and the flow control screw 1614 is used to form a pressure difference mechanism. By pressing the button 17, the formation and disappearance of the pressure difference are controlled, so as to control the sliding of the reversing valve core 163, so that the gas enters the rod chamber or the non-rod chamber of the air cylinder 12, thereby driving the air cylinder piston 14 to reciprocate, realizing the riveting and resetting actions of the riveting gun. When the button 17 is not pressed, the gas at the rear end of the reversing valve core 163 is in a closed state, and a pressure difference is formed. The reversing valve core 163 will overcome the resistance of the valve core spring under the action of the air pressure and compress the spring. At this time, the non-rod chamber of the air cylinder 12 starts to intake air and pushes the piston to the uppermost position. At the same time, the gas in the rod chamber of the air cylinder piston 14 will pass through the intake port along the reversing valve body 162 and discharge the gas from behind the support end cover 1612; when the button 17 is pressed, it is equivalent to the rear end of the reversing valve core 163 communicating with the atmosphere, and no pressure difference can be formed. The reversing valve core 163 will be pushed downward to the lowermost position to contact the support end cover 1612 under the action of the valve core return spring 1632. At this time, the rod chamber of the air cylinder piston 14 starts to intake air, driving the piston to move downward from the uppermost position to contact the end cover of the air cylinder 12. At the same time, the gas in the non-rod chamber of the air cylinder piston 14 will pass through the intake port along the reversing valve body 162 and discharge the gas from behind the support end cover 1612. Since the hollow gun body 2 and the hydraulic booster cylinder 11 are filled with hydraulic oil, when the booster piston rod 13 moves downward, a corresponding volume of hydraulic oil will be generated through the oil passage to drive the gun body piston to generate displacement. When the booster piston rod 13 moves upward, the hydraulic oil in the front chamber of the hollow gun body piston 3 will be sucked into the hydraulic booster cylinder 11 body. At the same time, the booster piston rod 13 will push the reset piston 10 to overcome the resistance of the reset spring and push the hydraulic oil in the reset cylinder 9 body into the rear end of the gun body piston, driving the gun body piston to reset to the initial position.

[0050] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A portable pneumatic rivet gun, comprising a transverse member arranged horizontally and a longitudinal member arranged vertically. The transverse member includes a hollow gun head adapter (1), a hollow gun body (2), a hollow gun body piston (3), and a hollow nail retaining cylinder (4). The hollow gun body (2) forms a first cavity (21), and the hollow gun body piston (3) forms a second cavity (31). The longitudinal member includes a reset mechanism, characterized in that, The longitudinal member further includes an oil storage handle (8), a hydraulic booster cylinder (11), a cylinder (12), a booster piston rod (13) and a cylinder piston (14). The oil storage handle (8) is provided with a fourth cavity (81). The reset mechanism and the hydraulic booster cylinder (11) are located in the fourth cavity (81). The lower end of the booster piston rod (13) is connected to the cylinder piston (14), and the upper end is located in the hydraulic booster cylinder (11). The cylinder piston (14) divides the cylinder (12) into a rod chamber and a rodless chamber; The upper end of the oil storage handle (8) is connected to the hollow gun body (2), and the lower end is connected to the cylinder (12). One end of the hollow gun body (2) is connected to the hollow gun head adapter (1), and the other end is connected to the hollow retaining pin cylinder (4). The hollow gun body piston (3) is composed of a gun body piston body (32), a gun body piston front rod (33) and a gun body piston rear rod (34). The gun body piston body (32) is located between the gun body piston front rod (33) and the gun body piston rear rod (34). The second cavity (31) is composed of a second cavity front chamber (35), a second cavity middle chamber (36) and a second cavity rear chamber (37). The second cavity front chamber (35) corresponds to the gun body piston front rod (33), the second cavity middle chamber (36) corresponds to the gun body piston body (32), and the second cavity rear chamber (37) corresponds to the gun body piston rear rod (34). The diameter of the second cavity front chamber (35) is equal to the diameter of the second cavity middle chamber (36). The minimum diameter of the second cavity rear chamber (37) is greater than the diameter of the second cavity front chamber (35), and the diameter of the second cavity rear chamber (37) decreases from back to front. The first cavity (21) is composed of a first cavity front chamber (22), a first cavity middle chamber (23) and a first cavity rear chamber (24). The diameter of the first cavity rear chamber (24) is greater than the diameter of the first cavity front chamber (22), and the diameter of the first cavity rear chamber (24) is greater than the diameter of the first cavity middle chamber (23). The gun body piston body (32) and the gun body piston rear rod (34) are located in the first cavity rear chamber (24). The gun body piston front rod (33) passes through the first cavity middle chamber (23) and the first cavity front chamber (22). The hollow gun body (2) is provided with a longitudinal element connection part (26) and a third cavity (25). The third cavity (25) communicates with the first cavity rear chamber (24). The longitudinal element connection part (26) is composed of the wall of the third cavity (25). One end of the reset mechanism is connected to the longitudinal element connection part (26), and the other end is connected to the hydraulic booster cylinder (11). The cylinder piston (14) is located in the cylinder (12); The hollow gun body (2) is further provided with an oil filling hole (27). A sealing bolt (7) is used for sealing the oil filling hole (27). The oil filling hole (27) communicates with the fourth cavity (81). A groove is provided on the lower wall of the reset cylinder (9); The reset mechanism includes a reset cylinder (9), a reset piston (10) and a reset piston spring (15). The reset piston (10) and the reset piston spring (15) are located in the reset cylinder (9).

2. The portable pneumatic rivet gun according to claim 1, wherein, The end of the front rod (33) of the gun body piston is connected to the internal thread of the pull head for installing rivets of corresponding specifications through external threads, and the hollow gun head adapter (1) is threadedly connected to the internal thread of the hollow gun body (2) through external threads.

3. The portable pneumatic rivet gun according to claim 2, wherein, The transverse member further includes a gun body end cap (5) and a nail retaining cylinder bushing (6). The gun body end cap (5) is threadedly connected to the hollow gun body (2). The front end of the hollow nail retaining cylinder (4) passes through the gun body end cap (5) and contacts the rear end of the rear rod (34) of the gun body piston. The front end of the nail retaining cylinder bushing (6) is located in the rear cavity (37) of the second cavity, and the rear end is located in the hollow nail retaining cylinder (4).

4. The portable pneumatic rivet gun according to claim 1, wherein, The hydraulic booster cylinder (11) is further connected to a booster cylinder end cap (101), and the booster cylinder end cap (101) is further connected to a booster cylinder end cap locking ring (105). The booster cylinder end cap (101) is locked to the cylinder (12) through the booster cylinder end cap locking ring (105). The bottom of the cylinder (12) is provided with a cylinder head (106) and a cylinder cover plate (107), and the cylinder head (106) is located between the cylinder piston (14) and the cylinder cover plate (107).

5. The portable pneumatic rivet gun according to claim 1, wherein The portable pneumatic rivet gun further includes a switch mechanism and a reversing mechanism (16). The reversing mechanism (16) is connected to the cylinder (12). The reversing mechanism (16) includes a reversing support (161), a reversing valve body (162), and a reversing valve core (163). The reversing support (161) is provided with a fifth cavity (164). The reversing valve body (162) is located in the fifth cavity (164), and the reversing valve core (163) is located in the reversing valve body (162). The switch mechanism includes a button (17) and a switch channel (18). The switch channel (18) is provided on the wall of the oil storage handle (8), and the switch channel (18) communicates with the fifth cavity (164). The reversing support (161) is connected to an air inlet joint (165), and the air inlet joint (165) communicates with the reversing valve body (162).

6. The portable pneumatic rivet gun according to claim 5, characterized in that, The reversing mechanism (16) is further provided with a valve core filter disc (1631) and a valve core return spring (1632). The reversing support (161) is further provided with a flow control screw (1614), a support end cap (1612), and a support filter disc (1613).

7. The portable pneumatic rivet gun according to claim 1, wherein, The booster piston rod (13) is provided with a booster piston head (131), and the area S2 of the cylinder piston (14) - the area S1 of the booster piston head (131) > 0.

8. A riveting method for high-strength rivets, characterized in that, The riveting method of the high-strength rivet uses the portable pneumatic rivet gun according to any one of claims 1-7.

9. A riveting method for high-strength rivets, characterized in that, The riveting method of the high-strength rivet uses a portable pneumatic rivet gun, which includes a transverse member arranged horizontally and a longitudinal member arranged vertically. The transverse member includes a hollow gun head adapter (1), a hollow gun body (2), a hollow gun body piston (3), and a hollow nail retaining cylinder (4). The hollow gun body (2) forms a first cavity (21), and the hollow gun body piston (3) forms a second cavity (31). The longitudinal member includes a reset mechanism. It is characterized in that the longitudinal member further includes an oil storage handle (8), a hydraulic booster cylinder (11), a cylinder (12), a booster piston rod (13), and a cylinder piston (14). The oil storage handle (8) is provided with a fourth cavity (81). The reset mechanism and the hydraulic booster cylinder (11) are located in the fourth cavity (81). The lower end of the booster piston rod (13) is connected to the cylinder piston (14), and the upper end is located in the hydraulic booster cylinder (11). The cylinder piston (14) divides the cylinder (12) into a rod chamber and a rodless chamber; The upper end of the oil storage handle (8) is connected to the hollow gun body (2), and the lower end is connected to the cylinder (12). One end of the hollow gun body (2) is connected to the hollow gun head adapter (1), and the other end is connected to the hollow nail retaining cylinder (4). The hollow gun body piston (3) is composed of a gun body piston body (32), a gun body piston front rod (33), and a gun body piston rear rod (34). The gun body piston body (32) is located between the gun body piston front rod (33) and the gun body piston rear rod (34). The second cavity (31) is composed of a second cavity front chamber (35), a second cavity middle chamber (36), and a second cavity rear chamber (37). The second cavity front chamber (35) corresponds to the gun body piston front rod (33), the second cavity middle chamber (36) corresponds to the gun body piston body (32), and the second cavity rear chamber (37) corresponds to the gun body piston rear rod (34). The diameter of the second cavity front chamber (35) is equal to the diameter of the second cavity middle chamber (36). The minimum diameter of the second cavity rear chamber (37) is greater than the diameter of the second cavity front chamber (35). The diameter of the second cavity rear chamber (37) decreases from the rear to the front. The first cavity (21) is composed of a first cavity front chamber (22), a first cavity middle chamber (23), and a first cavity rear chamber (24). The diameter of the first cavity rear chamber (24) is greater than the diameter of the first cavity front chamber (22). The diameter of the first cavity rear chamber (24) is greater than the diameter of the first cavity middle chamber (23). The gun body piston body (32) and the gun body piston rear rod (34) are located in the first cavity rear chamber (24). The gun body piston front rod (33) passes through the first cavity middle chamber (23) and the first cavity front chamber (22). The hollow gun body (2) is provided with a longitudinal element connection part (26) and a third cavity (25). The third cavity (25) communicates with the first cavity rear chamber (24). The longitudinal element connection part (26) is composed of the wall of the third cavity (25). One end of the reset mechanism is connected to the longitudinal element connection part (26), and the other end is connected to the hydraulic booster cylinder (11). The cylinder piston (14) is located in the cylinder (12).

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