Centralized control device for riveting guns

Abstract

The invention discloses a riveting gun centralized control device which comprises a carrying turnover mechanism and a positioning clamping mechanism, a monitoring riveting component for bolt assembly is arranged above the side of the carrying turnover mechanism, and the positioning clamping mechanism for bolt assembly is arranged above the inner end of the carrying turnover mechanism. According to the device disclosed by the invention, a control case above a group of cabinet shells is matched with an upper sleeve shell, a first bearing frame, a first carrying table, a speed change case, a driving motor, a second carrying table and a hydraulic telescopic block which are carried on a turnover mechanism for common action; according to the automatic riveting machine, the product body clamped by the positioning and clamping mechanism is subjected to automatic qualification detection after being processed and detected, equipment monitoring is added to avoid errors caused by manual operation, meanwhile, qualification detection of riveted products is completed, defective products are omitted from the source, the qualification rate is increased, the cost expenditure of a user is reduced, and the production efficiency is improved. And the burden of the user is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the riveting processing technical field, especially a rivet gun centralized control device. BACKGROUND

[0002] Riveting, rivet connection, is a mechanical process that connects multiple workpieces together through rivets, which uses axial force to thicken the rivet rod in the rivet hole and form a rivet head, connecting multiple parts, riveting is the core technology of aircraft manufacturing, mainly used for structural connection of composite materials such as aluminum alloy, also used for riveting of core components such as door lock fasteners and brake pistons, and for connecting metal parts of structures such as bridges and high-rise buildings, permanent connection is formed through plastic deformation of the rivet, improving overall stability, etc.

[0003] With the development of the times, automation is gradually replacing and optimizing worker production, and the riveting equipment of the current product has been very mature, the operation of the workers and the popularization of the machine equipment complete the basic industrial demand, however, the quality requirements of the product also need to be improved, through the design of the rivet gun centralized control device to realize the quality detection of the riveting product, thereby improving the yield rate and reducing the production of defective products, the existing riveting products are detected by artificial riveting whether it is qualified, artificial cost is high, efficiency is poor and cannot realize detection in percentage, therefore, we propose a kind of rivet gun centralized control device to solve the above problems. SUMMARY

[0004] In view of the above problems, the present application provides a kind of rivet gun centralized control device, the rivet gun centralized control device mainly utilizes the control machine box of the cabinet shell group upper side cooperates with the upper set shell of the turnover mechanism, first bearing frame, first carrying platform, variable speed machine box, driving motor, second carrying platform and hydraulic telescopic block to jointly act, so that the product body clamped by positioning clamping mechanism is automatically qualified after processing detection Product detection, which increases the monitoring of the equipment to avoid the mistakes of manual operation, and completes the qualified detection of the riveting product, saves the defective product from the source, improves the qualified rate, reduces the cost of the user, reduces the burden of the user.

[0005] To achieve the above purpose, the present application provides the following technical scheme: A rivet gun centralized control device, comprising a carrying turnover mechanism and a positioning clamping mechanism, the carrying turnover mechanism is provided with a monitoring riveting component assembled by bolts on the upper side of the edge side, and the positioning clamping mechanism is provided on the inner end of the carrying turnover mechanism, the output end of the positioning clamping mechanism is provided with a clamped product body.

[0006] As a further technical scheme, the carrying and overturning mechanism comprises a cushion block, a base plate, a finished product plate, a limiting block, an inner support, an upper sleeve, a first bearing frame, a first carrying table, a variable speed machine box, a driving motor, a second carrying table and a hydraulic telescopic block, the upper side of the cushion block is provided with the base plate, the side of the base plate is provided with the finished product plate, and the side of the finished product plate is provided with the limiting block assembled by bolts.

[0007] As a further technical scheme, the inner side of the base plate is provided with the inner support, and the side of the inner support is provided with the upper sleeve, one group of inner sides of the upper sleeve is provided with the first bearing frame, and the inner side of the first bearing frame is provided with the first carrying table.

[0008] As a further technical scheme, the other group of inner sides of the upper sleeve is provided with the variable speed machine box, one end of the variable speed machine box is connected with the output end of the driving motor, the output end of the variable speed machine box is provided with the second carrying table, and the inner side below the second carrying table is provided with the hydraulic telescopic block.

[0009] As a further technical scheme, the monitoring and riveting component comprises an assembly base, a cabinet shell, a feeding box, a control machine box, a lifting frame, a top plate, a lifting block, a top base groove, a lead screw, a sliding base, a hydraulic lifting rod and a rivet gun, the assembly base is bolted on the side of the base plate, the upper side of the assembly base is provided with the cabinet shell, one end of the cabinet shell is provided with the feeding box, the other end of the cabinet shell is provided with the control machine box, the side of the cabinet shell is provided with the lifting frame assembled by bolts, and the top end of the lifting frame is provided with the top plate assembled by bolts.

[0010] As a further technical scheme, the inner top side of the top plate is provided with the lifting block, the lower side of the lifting block is provided with the top base groove, the output end of the motor inside the top base groove is connected with the lead screw, the output end of the lead screw is threadedly connected with the sliding base, the lower side of the sliding base is provided with the hydraulic lifting rod, and the lower side of the hydraulic lifting rod is provided with the rivet gun.

[0011] As a further technical scheme, the positioning and clamping mechanism comprises a bolt base, a bearing plate, a first base groove, a first lead screw, a second base groove, a second lead screw, an upward sliding block, a lower arc shell, a pneumatic telescopic rod, an upper arc shell, an end-to-end plate, an electric rotating seat and a pneumatic push piece, the bolt base is bolted on the inner end of the second carrying table, the upper side of the bolt base is provided with the bearing plate, the upper sides of both ends of the bearing plate are provided with the end-to-end plate, the upper inner side of the end-to-end plate is provided with the electric rotating seat, and the output end of the electric rotating seat is provided with the pneumatic push piece.

[0012] As a further technical scheme, the upper side of the bearing plate is provided with a bolted first base groove, and the inside of the first base groove is connected with a first lead screw through the output end of an automatic motor, the output end of the first lead screw is threadedly connected with a second base groove, the inside of the second base groove is connected with a second lead screw through the output end of an automatic motor, and the output end of the second lead screw is threadedly connected with an upper moving sliding block.

[0013] As a further technical scheme, the upper side of the upper moving sliding block is provided with a lower arc shell, the upper side of both ends of the lower arc shell is provided with a pneumatic telescopic rod, and the output end of the pneumatic telescopic rod is provided with an upper arc shell.

[0014] Compared with the prior art, the beneficial effects of the present application are: The device mainly utilizes the control machine box on the upper side of the cabinet shell to cooperate with the upper set shell, the first bearing frame, the first carrying table, the speed change machine box, the driving motor, the second carrying table and the hydraulic telescopic block on the carrying turnover mechanism to jointly act, so that the product body clamped by the positioning and clamping mechanism is subjected to automatic qualified detection after machining and detection, the qualified detection of riveted products is achieved, the defective products are saved from the source, the qualified rate is improved, the cost expenditure of the user is reduced, and the burden of the user is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of a rivet gun centralized control device. Figure 2 It is a structural schematic view of the present application from the bottom. Figure 3 It is a structural schematic view of the carrying turnover mechanism in the present application. Figure 4 It is a structural schematic view of the monitoring riveting component in the present application. Figure 5 It is a structural schematic view of the positioning and clamping mechanism in the present application.

[0016] In the figure: 1, carry overturn mechanism; 101, cushion block; 102, base plate; 103, finished plate; 104, limit block; 105, inner support column; 106, upper set shell; 107, first bearing frame; 108, first carrying platform; 109, variable speed machine box; 1010, driving motor; 1011, second carrying platform; 1012, hydraulic telescopic block; 2, monitor riveting component; 201, assembly base; 202, cabinet shell; 203, feeding box; 204, control machine box; 205, lifting frame; 206, top plate; 207, hoisting block; 208, top base groove; 209, screw rod; 2010, sliding base; 2011, hydraulic hoist; 2012, rivet connecting gun; 3, positioning clamping mechanism; 301, bolt base; 302, bearing plate; 303, first base groove; 304, first screw rod; 305, second base groove; 306, second screw rod; 307, upward sliding block; 308, lower arc shell; 309, pneumatic telescopic rod; 3010, upper arc shell; 3011, end-to-board; 3012, electric rotating seat; 3013, pneumatic push piece; 4, product body. DETAILED DESCRIPTION

[0017] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0018] In the description of the present application, it needs to be understood that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0020] Please refer to Figures 1-5 In the embodiments of the present application, a rivet gun centralized control device comprises a flip mechanism 1 and a positioning and clamping mechanism 3. A monitoring and riveting component 2 is bolted on the upper side of the edge side of the flip mechanism 1. A positioning and clamping mechanism 3 is bolted on the upper side of the inner end of the flip mechanism 1. The output end of the positioning and clamping mechanism 3 is provided with a clamped product body 4.

[0021] The flip mechanism 1 comprises a cushion block 101, a base plate 102, a finished product plate 103, a limiting block 104, an inner support column 105, an upper sleeve 106, a first bearing frame 107, a first mounting table 108, a variable speed machine box 109, a driving motor 1010, a second mounting table 1011 and a hydraulic telescopic block 1012. The upper side of the cushion block 101 is provided with the base plate 102. The edge side of the base plate 102 is provided with the finished product plate 103. The upper side of the edge side of the finished product plate 103 is provided with the bolted limiting block 104.

[0022] In the embodiments of the present application, when the product body 4 is processed to be qualified, the output operation of the flip mechanism 1 is used to flip the positioning and clamping mechanism 3 downward. Then the output operation of the pneumatic telescopic rod 309 on the lower arc shell 308 is used to open the upper arc shell 3010, so as to loosen the product body 4. After loosening, the user places the product body 4 on the finished product plate 103 and uses the limiting block 104 to limit the falling of the product body 4, so as to realize the effect of discharging the processed qualified product.

[0023] The inner side of the base plate 102 is provided with the inner support column 105. The edge side of the inner support column 105 is provided with the upper sleeve 106. A group of inner sides of the upper sleeve 106 is provided with the first bearing frame 107. The inner edge side of the first bearing frame 107 is provided with the first mounting table 108.

[0024] In the embodiments of the present application, when the product body 4 processed by the control machine box 204 is unqualified, the output end of the driving motor 1010 at one end of the variable speed machine box 109 is used to drive the variable speed machine box 109 to operate. After operation, the output end of the variable speed machine box 109 drives the positioning and clamping mechanism 3 to flip to the upper side again, so as to process the monitoring and riveting component 2 again.

[0025] Another group of inner sides of the upper sleeve shell 106 is provided with a transmission box 109, one end of the transmission box 109 is connected with an output end of a driving motor 1010, the output end of the transmission box 109 is provided with a second mounting table 1011, and the inner side below the second mounting table 1011 is provided with a hydraulic telescopic block 1012.

[0026] In the embodiment of the application, after the equipment is processed, the hydraulic telescopic block 1012 is used to output operation, so that the second mounting table 1011 is dislocated, after dislocation, the driving motor 1010 at one end of the transmission box 109 is used to output operation to drive the transmission box 109 to operate, after operation, the transmission box 109 is used to output operation, so that the second mounting table 1011 drives the positioning and clamping mechanism 3 to rotate to the lower side.

[0027] The monitoring riveting component 2 comprises an assembly base 201, a cabinet shell 202, a feeding box 203, a control box 204, a lifting frame 205, a top plate 206, a lifting block 207, a top base groove 208, a lead screw 209, a sliding base 2010, a hydraulic lifting rod 2011 and a rivet connecting gun 2012, the assembly base 201 is bolted on the upper side of the side of the base plate 102, the upper side of the assembly base 201 is provided with the cabinet shell 202, one end of the cabinet shell 202 is provided with the feeding box 203, the other end of the cabinet shell 202 is provided with the control box 204, the side of the cabinet shell 202 is provided with the bolted lifting frame 205, and the top end of the lifting frame 205 is provided with the bolted top plate 206.

[0028] In the embodiment of the application, when detection is needed, the control box 204 on one group of the upper side of the cabinet shell 202 is used to detect the processing condition, after detection, the control box 204 is used to output an instruction, so that the feeding box 203 is ready with relevant rivets.

[0029] The inner top side of the top plate 206 is provided with the lifting block 207, the lower side of the lifting block 207 is provided with the top base groove 208, the inside of the top base groove 208 is provided with the lead screw 209 connected with the output end of the motor, the output end of the lead screw 209 is threadedly connected with the sliding base 2010, the lower side of the sliding base 2010 is provided with the hydraulic lifting rod 2011, and the lower side of the hydraulic lifting rod 2011 is provided with the rivet connecting gun 2012.

[0030] When riveting is needed in the embodiment of the present application, the motor output end inside the top base groove 208 is used to drive the screw rod 209 to operate, the operation of the screw rod 209 can make the sliding base 2010 adjust to the appropriate processing position, and the hydraulic boom 2011 below the sliding base 2010 is operated to make the rivet gun 2012 below the hydraulic boom 2011 pick up the rivets in the feeding box 203, and the product body 4 is riveted.

[0031] The positioning and clamping mechanism 3 comprises a bolt base 301, a bearing plate 302, a first base groove 303, a first screw rod 304, a second base groove 305, a second screw rod 306, an upward sliding block 307, a lower arc shell 308, a pneumatic telescopic rod 309, an upper arc shell 3010, an end-to-end plate 3011, an electric rotating seat 3012, and a pneumatic push piece 3013. The bolt base 301 is bolted to the inner end of the second mounting table 1011, the bearing plate 302 is arranged above the bolt base 301, the end-to-end plate 3011 is arranged at the upper ends of the bearing plate 302, the electric rotating seat 3012 is arranged at the upper inner side of the end-to-end plate 3011, and the pneumatic push piece 3013 is arranged at the output end of the electric rotating seat 3012.

[0032] When feeding is needed in the embodiment of the present application, the electric rotating seat 3012 at the upper inner side of the end-to-end plate 3011 is used to output and operate the pneumatic push piece 3013 to adjust to the appropriate position, and the pneumatic push piece 3013 is used to output and operate the product body 4 to be processed to align.

[0033] The bearing plate 302 is provided with the bolted first base groove 303, the first screw rod 304 is connected to the automatic motor output end inside the first base groove 303, the second base groove 305 is threadedly connected to the output end of the first screw rod 304, the second screw rod 306 is connected to the automatic motor output end inside the second base groove 305, and the upward sliding block 307 is threadedly connected to the output end of the second screw rod 306.

[0034] In the embodiment of the present application, when in use, the positioning and clamping mechanism 3 is bolted to the inner end of the mounting and overturning mechanism 1 through the bolt base 301, when installation is needed, the positioning and clamping mechanism 3 is bolted to the inner end of the mounting and overturning mechanism 1 through the bolt base 301, and the feeding box 203 and the control case 204 are outputted to make the output end of the first base groove 303 output and operate to make the first screw rod 304 output and operate to make the second base groove 305 adjust to the appropriate position, and the output end of the second base groove 305 is outputted to make the second screw rod 306 output and operate to make the upward sliding block 307 adjust to the appropriate position, The upper side of the sliding block 307 is provided with a lower arc shell 308, and the upper side of both ends of the lower arc shell 308 is provided with a pneumatic telescopic rod 309, and the output end of the pneumatic telescopic rod 309 is provided with an upper arc shell 3010.

[0035] In the embodiment of the present application, the product body 4 to be processed is placed above the lower arc shell 308, and the pneumatic telescopic rod 309 is used to output and run the output end, so that the pneumatic telescopic rod 309 is positioned after the output and running of the upper arc shell 3010.

[0036] The working principle of the present application is: when in use, the positioning and clamping mechanism 3 is bolted to the inner end of the carrying and overturning mechanism 1 through the bolt base 301, when installation is needed, the positioning and clamping mechanism 3 is bolted to the inner end of the carrying and overturning mechanism 1 through the bolt base 301, and the upper feeding box 203 and the control cabinet 204 are outputted to give the output end of the first base groove 303 to output and run, then the second base groove 305 is adjusted to the appropriate position, and the output end of the second base groove 305 is outputted to run, then the second lead screw 306 is outputted to run, and the upward moving slider 307 is adjusted to the appropriate position, then the product body 4 to be processed is placed above the lower arc shell 308, and the pneumatic telescopic rod 309 is outputted to run, then the upper arc shell 3010 is positioned to the product body 4 to be processed, when feeding is needed, the pneumatic push piece 3013 is adjusted to the appropriate position by outputting the electric rotating seat 3012 on the inner side of the end-to-board 3011, and the pneumatic push piece 3013 is outputted to run to align the product body 4 to be processed, when detection is needed, the control cabinet 204 on one group of the cabinet shell 202 is used to detect the processing condition, after detection, the control cabinet 204 is outputted to give the rivet in the upper feeding box 203, when riveting is needed, the motor inside the top base groove 208 is outputted to run to drive the lead screw 209 to run, the running of the lead screw 209 can adjust the sliding base 2010 to the appropriate processing position, and the hydraulic boom 2011 below the sliding base 2010 is run to take the rivet in the upper feeding box 203 by the rivet gun 2012 below the hydraulic boom 2011, and the product body 4 is riveted and processed, when the equipment processing is completed, the second carrying table 1011 is dislocated by outputting the hydraulic telescopic block 1012, then the drive motor 1010 at one end of the speed change box 109 is outputted to drive the speed change box 109 to run, the speed change box 109 is outputted to run to drive the second carrying table 1011 to rotate to the lower side, when the product body 4 is detected by the control cabinet 204 to be unqualified, the drive motor 1010 at one end of the speed change box 109 is outputted to drive the speed change box 109 to run, the speed change box 109 is outputted to run to drive the second carrying table 1011 to overturn the positioning and clamping mechanism 3 to the upper side again, so as to monitor the riveting part 2 to be processed again, when the product body 4 is qualified, the positioning and clamping mechanism 3 is overturned downward by the output of the carrying and overturning mechanism 1, then the pneumatic telescopic rod 309 on the lower arc shell 308 is outputted to run to open the upper arc shell 3010, and the product body 4 is released,Loosen the user product body 4 placed on the finished board 103 and use the limit block 104 to limit the placement of the product body 4, so as to realize the effect of discharging the qualified products.

[0037] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0038] Furthermore, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A rivet gun control device, comprising a flip mechanism (1) and a positioning and clamping mechanism (3), characterized in that: The monitoring riveting component (2) is arranged on the side of the carrying turnover mechanism (1) and is bolted, and the positioning clamping mechanism (3) is arranged on the inner end of the carrying turnover mechanism (1) and is bolted, and the output end of the positioning clamping mechanism (3) is provided with a clamped product body (4).

2. A rivet gun control device according to claim 1, wherein: The carrying turnover mechanism (1) comprises a cushion block (101), a base plate (102), a finished product plate (103), a limiting block (104), an inner support column (105), an upper sleeve (106), a first bearing frame (107), a first carrying platform (108), a speed changer box (109), a driving motor (1010), a second carrying platform (1011) and a hydraulic telescopic block (1012), the upper side of the cushion block (101) is provided with the base plate (102), the side of the base plate (102) is provided with the finished product plate (103), and the side of the finished product plate (103) is provided with the limiting block (104) which is bolted.

3. A rivet gun control device according to claim 2, wherein: The inner side of the base plate (102) is provided with the inner support column (105), the side of the inner support column (105) is provided with the upper sleeve (106), one group of inner sides of the upper sleeve (106) is provided with the first bearing frame (107), and the inner side of the first bearing frame (107) is provided with the first carrying platform (108).

4. A rivet gun control device according to claim 2, wherein: The other group of inner sides of the upper sleeve (106) is provided with the speed changer box (109), one end of the speed changer box (109) is connected with the output end of the driving motor (1010), the output end of the speed changer box (109) is provided with the second carrying platform (1011), and the inner side below the second carrying platform (1011) is provided with the hydraulic telescopic block (1012).

5. A rivet gun control device according to claim 2, wherein: The monitoring riveting component (2) comprises an assembly base (201), a cabinet shell (202), a feeding box (203), a control box (204), a lifting frame (205), a top plate (206), a hoisting block (207), a top base groove (208), a lead screw (209), a sliding base (2010), a hydraulic lifting rod (2011) and a rivet gun (2012), the assembly base (201) is bolted on the side of the base plate (102), the upper side of the assembly base (201) is provided with the cabinet shell (202), one end of the cabinet shell (202) is provided with the feeding box (203), the other end of the cabinet shell (202) is provided with the control box (204), the side of the cabinet shell (202) is provided with the lifting frame (205) which is bolted, and the top end of the lifting frame (205) is provided with the top plate (206) which is bolted.

6. A rivet gun control device according to claim 5, wherein: The inner top side of the top plate (206) is provided with a hoisting block (207), and the lower side of the hoisting block (207) is provided with a top base groove (208), the inside of the top base groove (208) is connected with a lead screw (209) at the output end of the motor, and the output end of the lead screw (209) is threadedly connected with a sliding base (2010), the lower side of the sliding base (2010) is provided with a hydraulic lifting boom (2011), and the lower side of the hydraulic lifting boom (2011) is provided with a rivet connecting gun (2012).

7. A rivet gun control device according to claim 2, wherein: The positioning and clamping mechanism (3) comprises a bolt base (301), a bearing plate (302), a first base groove (303), a first lead screw (304), a second base groove (305), a second lead screw (306), an upward sliding block (307), a lower arc shell (308), a pneumatic telescopic rod (309), an upper arc shell (3010), an end-to-end plate (3011), an electric rotating seat (3012), and a pneumatic push piece (3013). The bolt base (301) is bolted to the inner end of the second mounting table (1011), the upper side of the bolt base (301) is provided with a bearing plate (302), and the upper sides of the two ends of the bearing plate (302) are provided with end-to-end plates (3011), the upper inner side of the end-to-end plate (3011) is provided with an electric rotating seat (3012), and the output end of the electric rotating seat (3012) is provided with a pneumatic push piece (3013).

8. A rivet gun control device according to claim 7, wherein: The upper side of the bearing plate (302) is provided with a bolted first base groove (303), and the inside of the first base groove (303) is connected with a first lead screw (304) at the output end of the automatic motor, the output end of the first lead screw (304) is threadedly connected with a second base groove (305), and the inside of the second base groove (305) is connected with a second lead screw (306) at the output end of the automatic motor, and the output end of the second lead screw (306) is threadedly connected with an upward sliding block (307).

9. A rivet gun control device according to claim 7, wherein: The upper side of the upward sliding block (307) is provided with a lower arc shell (308), and the upper sides of the two ends of the lower arc shell (308) are provided with pneumatic telescopic rods (309), and the output end of the pneumatic telescopic rod (309) is provided with an upper arc shell (3010).

Images