Oil tank inner arc surface machining device for gasoline generating set production

Abstract

The invention relates to the technical field of gasoline generating set production equipment, in particular to a gasoline generating set production oil tank inner arc surface machining device which comprises a clamping table, a mechanical arm and a supporting plate, a polishing structure is movably arranged on the side edge of the supporting plate, and a driving mechanism connected with the supporting plate is arranged on the inner side of the polishing structure. A polishing structure is arranged on the inner side of the oil tank, a large transmission wheel is movably arranged in the polishing structure, two small transmission wheels are movably arranged on the inner side of the polishing structure, and a cambered surface adjusting mechanism connected with the supporting plate is arranged on the inner side of the polishing structure. The arc-shaped adjusting mechanism drives the two small transmission wheels to oppositely move along the inner side of the polishing structure, the polishing structure is expanded to form a smoother curve, the large transmission wheel vertically moves towards the direction of the driving mechanism under the constraint of the guide mechanism, the radian of the polishing structure is further leveled, and the polishing efficiency and the machining precision are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of gasoline generator set production equipment, in particular to an oil tank inner arc surface machining device for gasoline generator set production. BACKGROUND

[0002] In gasoline generator set production, oil tank inner arc surface machining faces many challenges: traditional bending equipment is difficult to meet the processing needs of complex structures such as cylinders, and die forming is prone to springback, which affects subsequent welding and appearance. In high-precision demand scenarios such as aviation supercharged oil tanks, existing polishing technologies have problems such as large investment, high cost, low efficiency or high quality risk. Therefore, developing a high-efficiency, accurate and multi-complex inner arc surface machining device is crucial to improving oil tank quality, optimizing production processes and reducing costs.

[0003] In the production and processing of gasoline generator set oil tanks, inner arc surface polishing is a key link to ensure the performance and service life of the oil tank. Currently, the polishing of the inner arc surface of the oil tank still relies on manual operation mode: workers need to hold polishing tools and enter the oil tank, and polish the arc surface according to experience. This method not only has high labor intensity, but also causes workers to be prone to fatigue after long-time operation, resulting in uneven smoothness of the inner arc surface of the oil tank, and relatively low overall processing efficiency, Some enterprises have tried to use mechanical arms to replace manual polishing, which has reduced labor costs to some extent, but new problems have arisen: due to the obvious differences in the inner arc surface angles of different types and specifications of oil tanks, the curvature curves are also different, and the mechanical arm must be replaced with polishing tools corresponding to specific curvature or adjusted with complex motion parameters when switching processing objects, which is difficult to meet the efficient processing needs of large-scale production. Therefore, we propose an oil tank inner arc surface machining device for gasoline generator set production. SUMMARY

[0004] One of the technical problems solved by the present application is how to design an oil tank inner arc surface machining device for gasoline generator set production that can polish different gasoline engine oil tank inner arc surfaces. To solve the above technical problems, the embodiment of the present application provides a gasoline generator set production oil tank inner arc surface machining device, which comprises a clamping table, a mechanical arm and a support plate, the side of the support plate movably provided with a polishing structure, which is used for providing a mounting base for the polishing belt, the inner side of the polishing structure provided with a driving mechanism connected with the support plate, which is used for driving the polishing structure to rotate and polish the inner arc surface of the oil tank, the inside of the polishing structure movably provided with a large transmission wheel, the inner side of the polishing structure movably provided with two small transmission wheels, which are symmetrically distributed about the large transmission wheel, the inner side of the polishing structure provided with an arc surface adjusting mechanism connected with the support plate, which is used for expanding the polishing structure by pushing the two small transmission wheels to make the outer arc change and synchronously drive the large transmission wheel to move up and down, so as to complete the polishing of the inner arc surface of different oil tanks by the polishing structure. The polishing structure comprises a flexible polishing base belt movably arranged on the side of the support plate, the inner side of the flexible polishing base belt provided with a flexible mounting belt, the inner side of the flexible mounting belt provided with a mounting groove, and the inner side of the mounting groove provided with a metal chain engaged with the large transmission wheel and the small transmission wheel In some embodiments, the driving mechanism comprises a rotary air cylinder arranged on the side of the support plate, the end of the rotary air cylinder provided with an output shaft, the outer side of the output shaft sleeved with a driving transmission wheel connected with the inner side of the flexible mounting belt, and the outer side of the driving transmission wheel engaged with the metal chain.

[0005] In some embodiments, the arc surface adjusting mechanism comprises a connecting plate movably sleeved on the inner side of the driving transmission wheel, the side of the connecting plate provided with a sliding groove, the inside of the sliding groove slidably provided with a sliding plate, and the bottom of the sliding plate provided with a moving plate movably connected with the inner side of the large transmission wheel.

[0006] In some embodiments, the side of the sliding plate is provided with a limiting groove, the inner side top of the limiting groove provided with an inclined block one, the side of the support plate provided with a telescopic air cylinder, the output end of the telescopic air cylinder provided with a double-surface inclined plate movably connected with the inclined surface of the inclined block one, and the side of the connecting plate provided with a connecting rod connected with the telescopic air cylinder.

[0007] In some embodiments, the side of the sliding plate is movably provided with a sleeve plate, a spring arranged between the sleeve plate and the moving plate, and the inside of the sleeve plate provided with an inclined block two movably connected with the inclined surface of the double-surface inclined plate.

[0008] In some embodiments, the inner side of the sleeve plate is movably provided with a special-shaped plate, the end of the special-shaped plate provided with a fixed plate, and the fixed plate movably sleeved in the inside of the small transmission wheel.

[0009] In some embodiments, the inner side of the small transmission wheel is sleeved with a limiting clamp rod, and the inner side of the large transmission wheel is provided with a ring groove, and the inner side of the ring groove is movably provided with a rotating rod connected to the end of the limiting clamp rod.

[0010] In some embodiments, the inner side of the polishing structure is provided with a bidirectional transmission mechanism for more accurate control of the movement of the large transmission wheel and the small transmission wheel, the bidirectional transmission mechanism comprises two horizontal plates arranged on the side edges of the connecting plate, and a rotating shaft is arranged between the two horizontal plates.

[0011] In some embodiments, the outer side of the rotating shaft is sleeved with a gear one, a driving rack is arranged between the gear one and the sleeve plate, the driving rack is engaged with the gear one, and the bottom of the driving rack is provided with a driving plate connected to the output end of the telescopic air cylinder.

[0012] In some embodiments, the side edge of the sliding plate is provided with a driven rack, the outer side of the rotating shaft is sleeved with a gear two engaged with the driven rack, and two L-shaped rods are arranged between the side edge of the connecting plate and the rotating air cylinder.

[0013] The present application has at least the following advantages: 1. When it is necessary to reduce the curvature of the polishing structure, the arc adjusting mechanism drives the two small transmission wheels to move towards each other along the inner side of the polishing structure, thereby expanding the polishing structure to form a more gentle curve, at the same time, the large transmission wheel moves vertically to the driving mechanism under the constraint of the guide mechanism, further flattening the curvature of the polishing structure, conversely, when it is necessary to increase the curvature of the polishing structure, the small transmission wheels move in the opposite direction and approach the large transmission wheel, the polishing structure shrinks to form a more curved profile under the action of elasticity, this self-adaptive adjustment mechanism can quickly match the inner wall of the oil tank with different curvatures, without frequent replacement of polishing tools, significantly improving the polishing efficiency and machining precision. 2. The driving of the inclined block one and the inclined block two by the double inclined plates drives the small transmission wheel and the large transmission wheel to move relatively, the improvement is that the driving gear is used as a power source, the gear one is engaged for transmission, the coaxial driven gear is rotated, and the driven rack is driven to move linearly, this gear and rack transmission design greatly improves the control accuracy of the curvature adjustment by means of the characteristics of gear engagement, makes the curvature change of the polishing structure more delicate and stable, and at the same time retains the flexible switching function of the two sets of transmission schemes: the inclined plate and inclined block mechanism is adopted for rapid coarse adjustment, and the gear and rack transmission is switched to for high-precision fine adjustment, so that different processing scenes can be adapted, the adaptation ability of the equipment to the complex inner arc surface of the oil tank is enhanced on the basis of ensuring the adjustment efficiency, and the overall processing applicability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present application. Figure 2Structure diagram of the support plate, polishing structure and large transmission wheel of the application; Figure 3 Structure diagram of the polishing structure, large transmission wheel, small transmission wheel and driving mechanism of the application; Figure 4 Exploded structure diagram of the polishing structure of the application; Figure 5 Structure diagram of the driving mechanism, large transmission wheel and arc adjusting mechanism of the application; Figure 6 Structure diagram of the special-shaped plate, fixed plate, rotating rod and double-sided inclined plate of the application; Figure 7 Exploded structure diagram of the connecting plate, sliding plate and sleeve plate of the application; Figure 8 Exploded structure diagram of the special-shaped plate, spring, small transmission wheel and rotating rod of the application; Figure 9 Structure diagram of the clamping table, mechanical arm and polishing structure of the application; Figure 10 Structure diagram of the polishing structure, rotary air cylinder and bidirectional transmission mechanism of the application; Figure 11 Structure diagram of the driving plate, connecting and L-shaped rod of the application; Figure 12 Structure diagram of the bidirectional transmission mechanism, sliding plate and sleeve plate of the application.

[0015] In the figure: 1, clamping table; 2, mechanical arm; 3, support plate; 4, polishing structure; 41, flexible polishing baseband; 42, flexible mounting band; 43, mounting groove; 5, large transmission wheel; 6, small transmission wheel; 7, driving mechanism; 71, rotary air cylinder; 72, driving transmission wheel; 73, output shaft; 8, arc adjusting mechanism; 81, connecting plate; 82, telescopic air cylinder; 83, sliding groove; 84, double-sided inclined plate; 85, special-shaped plate; 86, fixed plate; 87, connecting rod; 88, moving plate; 89, sliding plate; 810, sleeve plate; 811, limiting clamp rod; 812, rotating rod; 813, limiting groove; 814, inclined block one; 815, spring; 816, inclined block two; 817, ring groove; 9, bidirectional transmission mechanism; 91, L-shaped rod; 92, driving plate; 93, driving rack; 94, driven rack; 95, gear one; 96, gear two; 97, cross plate; 98, rotating shaft. DETAILED DESCRIPTION

[0016] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. 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.

[0017] Embodiment 1: see Figures 1-8 The present application provides a technical solution: an oil tank inner arc surface machining device for gasoline generator set production, comprising a clamping table 1, a mechanical arm 2 and a support plate 3, a polishing structure 4 is movably arranged on the side edge of the support plate 3, for providing a mounting base for the polishing belt, a driving mechanism 7 connected with the support plate 3 is arranged on the inner side of the polishing structure 4, for driving the polishing structure 4 to rotate and polish the inner arc surface of the oil tank, a large transmission wheel 5 is movably arranged in the polishing structure 4, two small transmission wheels 6 are movably arranged on the inner side of the polishing structure 4, and the two small transmission wheels 6 are symmetrically distributed about the large transmission wheel 5, an arc surface adjusting mechanism 8 connected with the support plate 3 is arranged on the inner side of the polishing structure 4, for expanding the polishing structure 4 by pushing the two small transmission wheels 6, so that the outer arc changes, and the large transmission wheel 5 is simultaneously driven to move up and down, and then the polishing structure 4 polishes different inner arc surfaces of the oil tank; The polishing structure 4 comprises a flexible polishing base strip 41 movably arranged on the side edge of the support plate 3, a flexible mounting strip 42 is arranged on the inner side of the flexible polishing base strip 41, the flexible polishing base strip 41 and the flexible mounting strip 42 are an integral structure, a mounting groove 43 is formed on the inner side of the flexible mounting strip 42, and a metal chain capable of engaging with the large transmission wheel 5 and the small transmission wheel 6 is embedded in the mounting groove 43, the polishing belt can be directly sleeved on the outer side of the flexible polishing base strip 41, so that direct action on the polishing belt can be avoided to cause the polishing belt to be broken, and the flexible polishing base strip 41 has the characteristic of anti-tearing; The clamping table 1 is used for firmly fixing the oil tank to be processed, and ensures that the position of the oil tank is not deviated during polishing. The mechanical arm 2 can flexibly adjust the spatial position and angle of the support plate 3, and accurately sends the polishing component into the corresponding processing area inside the oil tank. The polishing structure 4 movably assembled on the side edge of the support plate 3 is an execution component directly acting on the inner arc surface. The driving mechanism 7 movably connected to the inner side of the polishing structure 4 provides rotary power for the polishing structure 4. The polishing structure 4 is polished by continuously rotating to polish the inner arc surface of the oil tank. The large transmission wheel 5 inside the polishing structure 4 and the two symmetrically distributed small transmission wheels 6 together constitute a support structure. The two small transmission wheels 6 are symmetrically distributed about the large transmission wheel 5. The tension state of the polishing belt on the flexible polishing base band 41 can be changed by position movement. The arc surface adjusting mechanism 8 connected to the support plate 3 is a core adjusting component. The flexible polishing base band 41 is expanded outward by pushing the two small transmission wheels 6, so that the flexible polishing base band 41 drives the polishing belt to deform. Therefore, the outer arc curvature of the polishing belt changes, and the large transmission wheel 5 is simultaneously driven to rise and fall, so as to flexibly adapt to the inner arc surface of the oil tank with different radii, and realize targeted polishing operation.

[0018] The driving mechanism 7 comprises a rotary air cylinder 71 arranged on the side edge of the support plate 3. The end of the rotary air cylinder 71 is provided with an output shaft 73. The outer side of the output shaft 73 is sleeved with a driving transmission wheel 72 connected to the inner side of the flexible mounting band 42. The outer side of the driving transmission wheel 72 is engaged with a metal chain. When the rotary air cylinder 71 works, the end output shaft 73 rotates stably at a set speed. The driving transmission wheel 72 sleeved on the outer side of the output shaft 73 is closely combined with the inner side of the polishing structure 4. With the rotation of the driving transmission wheel 72, the polishing structure 4 is directly driven to rotate circularly along the track formed by the large transmission wheel 5 and the small transmission wheel 6, so as to provide continuous and stable polishing power for the inner arc surface polishing, and ensure the polishing efficiency and surface finish.

[0019] The arc surface adjusting mechanism 8 comprises a connecting plate 81 movably sleeved on the inner side of the driving transmission wheel 72. The side edge of the connecting plate 81 is provided with a sliding groove 83. The inner side of the sliding groove 83 is slidably provided with a sliding plate 89. The bottom of the sliding plate 89 is provided with a moving plate 88 movably connected to the inner side of the large transmission wheel 5.

[0020] The side edge of the sliding plate 89 is provided with a limiting groove 813. The inner side top of the limiting groove 813 is provided with an inclined block one 814. The side edge of the support plate 3 is provided with a telescopic air cylinder 82. The output end of the telescopic air cylinder 82 is provided with a double inclined plate 84 movably connected to the inclined surface of the inclined block one 814. The side edge of the connecting plate 81 is provided with a connecting rod 87 connected to the telescopic air cylinder 82. The side edge of the sliding plate 89 is movably provided with a sleeve plate 810. The sleeve plate 810 and the moving plate 88 are provided with a spring 815 therebetween. The inner side of the sleeve plate 810 is provided with an inclined block two 816 movably connected to the inclined surface of the double inclined plate 84. The limiting groove 813 on the side of the sliding plate 89 is used to constrain the installation position of the inclined block one 814. The inclined block one 814 fixed on the inner side of the top has an inclined contact surface, which forms an inclined surface matching structure with the double-sided inclined plate 84 on the output end of the telescopic cylinder 82 on the side of the support plate 3. When the telescopic cylinder 82 telescopes, the double-sided inclined plate 84 slides along the inclined surface of the inclined block one 814, converting the axial thrust into the power of the transverse sliding of the sliding plate 89 along the sliding groove 83. The connecting rod 87 on the side of the connecting plate 81 connects the telescopic cylinder 82 and the connecting plate 81, which not only provides installation support for the cylinder, but also ensures stable force transmission. At the same time, the sleeve plate 810 movably sleeved on the side of the sliding plate 89 can slide slightly relative to the sliding plate 89. The inclined block two 816 in the sleeve plate 810 is in contact with the other side of the inclined surface of the double-sided inclined plate 84. The spring 815 between the sleeve plate 810 and the moving plate 88 can balance the stress to avoid rigid collision. When the double-sided inclined plate 84 moves, the inclined block two 816 is pushed to drive the sleeve plate 810 to move transversely, thereby driving the small transmission wheel 6 to expand the polishing structure 4. The elastic potential energy of the spring 815 can also assist in adjusting the reset of the rear part, improving the adjustment flexibility.

[0021] The inner side of the sleeve plate 810 movably sets the profiled plate 85, and the end of the profiled plate 85 sets the fixed plate 86 movably sleeved in the small transmission wheel 6.

[0022] The inner side of the small transmission wheel 6 is sleeved with a limiting clamp rod 811, and the inner side of the large transmission wheel 5 is provided with a ring groove 817, and the inner side of the ring groove 817 movably sets a rotating rod 812 connected to the end of the limiting clamp rod 811. The profiled plate 85 movably connected to the inner side of the sleeve plate 810 can move with the sleeve plate 810 and adaptively adjust the angle. The fixed plate 86 at the end of the profiled plate 85 is sleeved in the small transmission wheel 6, which provides stable support for the small transmission wheel 6 and transmits movement power, ensures the accurate movement of the small transmission wheel 6 in the set direction, and the limiting clamp rod 811 sleeved in the small transmission wheel 6 is connected with the rotating rod 812 in the ring groove 817 of the large transmission wheel 5. When the small transmission wheel 6 expands or shrinks, the rotating rod 812 slides along the ring groove 817, realizing the synchronous constraint of the movement of the large transmission wheel 5 and the small transmission wheel 6, ensuring the coordinated action of the two, and finally accurately controlling the radian change of the polishing structure 4.

[0023] Working principle: when using the device, first fix the oil tank on the clamping table 1, at this time the mechanical arm 2 will move the flexible polishing base strip 41, which will move the outer polishing belt, so that the polishing belt polishes the inner side of the oil tank on the clamping table 1, when different oil tanks are replaced, the arc surface of the flexible polishing base strip 41 needs to be adjusted, so the telescopic cylinder 82 needs to be obtained, so that the output end of the telescopic cylinder 82 drives the double-sided inclined plate 84 to slide in the limiting groove 813, so that the two sides of the double-sided inclined plate 84 drive the inclined block one 814 and the inclined block two 816 to move, when the inclined block one 814 moves, it will drive the sliding plate 89 to slide in the sliding groove 83, so that the sliding plate 89 drives the moving plate 88 to move, and thus the moving plate 88 drives the inner large transmission wheel 5 to move; At this time, the inclined block two 816 moves, which drives the side sleeve plate 810 to move, the sleeve plate 810 presses or pulls the spring 815, at this time the special-shaped plate 85 in the sleeve plate 810 moves and slides in the sleeve plate 810, thereby driving the end fixed plate 86 to move, the fixed plate 86 drives the outer small transmission wheel 6 to move, the small transmission wheel 6 is provided with a limiting clamp rod 811 in the inside, and the limiting clamp rod 811 is limited in the ring groove 817 by the rotating rod 812, so that the two small transmission wheels 6 are expanded and then reduced, which is mainly to change and adjust the inner arc surface of the oil tank.

[0024] Embodiment 2: please refer to Figures 9-12 The present application provides a technical solution: the inner side of the polishing structure 4 is provided with a bidirectional transmission mechanism 9 for more accurate control of the movement of the large transmission wheel 5 and the small transmission wheel 6, the bidirectional transmission mechanism 9 comprises two lateral plates 97 arranged on the side of the connecting plate 81, and a rotating shaft 98 arranged between the two lateral plates 97.

[0025] The outer side of the rotating shaft 98 is provided with a gear one 95, a driving rack 93 is arranged between the gear one 95 and the sleeve plate 810, the driving rack 93 is engaged with the gear one 95, the bottom of the driving rack 93 is provided with a driving plate 92 connected with the output end of the telescopic cylinder 82, the gear one 95 on the outer side of the rotating shaft 98 is engaged with the driving rack 93 between the sleeve plate 810, the driving plate 92 at the bottom of the driving rack 93 is connected with the output end of the telescopic cylinder 82, and the cylinder drives the rotating shaft 98 to rotate through the rack and pinion transmission when it acts.

[0026] The side of the sliding plate 89 is provided with a driven rack 94, the outer side of the rotating shaft 98 is provided with a gear two 96 engaged with the driven rack 94, two L-shaped rods 91 are arranged between the side of the connecting plate 81 and the rotating cylinder 71, the driven rack 94 on the side of the sliding plate 89 is engaged with the gear two 96 on the rotating shaft 98 to form a linkage structure, and the two L-shaped rods between the side of the connecting plate 81 and the rotating cylinder 71 provide stable support for the transmission mechanism and guarantee the transmission accuracy.

[0027] At this time, when the telescopic cylinder 82 is driven, the driving plate 92 is driven to move, and the driving plate 92 drives the driving rack 93 to move. The driving rack 93 drives the sleeve plate 810 to move, the special-shaped plate 85 in the sleeve plate 810 slides, and the driving rack 93 drives the meshing gear one 95 to rotate. The gear one 95 rotates to drive the rotating shaft 98 in the inside to rotate. The rotating shaft 98 is sleeved with the gear two 96 on the outside, so that the gear two 96 drives the meshing driven rack 94 to move when rotating. Therefore, the driven rack 94 drives the sliding plate 89 to slide in the sliding groove 83, and finally drives the large transmission wheel 5 and the small transmission wheel 6 to move, so as to adjust the arc of the flexible polishing base strip 41, and further adjust the arc of the polishing belt.

[0028] It should be noted that, in this document, the terms "first" and "second" and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, which can be understood by those skilled in the art.

Claims

1. A machining device for the inner arc surface of a fuel tank used in the production of gasoline generator sets, comprising a clamping table (1), a robotic arm (2), and a support plate (3), characterized in that: The side of the support plate (3) is movably provided with a polishing structure (4) for providing a mounting base for the polishing belt. The inner side of the polishing structure (4) is provided with a drive mechanism (7) connected to the support plate (3) for driving the polishing structure (4) to rotate and polish the inner arc surface of the oil tank. The polishing structure (4) is movably provided with a large transmission wheel (5). The inner side of the polishing structure (4) is movably provided with two small transmission wheels (6), which are symmetrically distributed about the large transmission wheel (5). The inner side of the polishing structure (4) is provided with an arc surface adjustment mechanism (8) connected to the support plate (3) for pushing the polishing structure (4) to expand by pushing the two small transmission wheels (6), so that the outer arc shape changes, and simultaneously driving the large transmission wheel (5) to move up and down, thereby completing the polishing of different inner arc surfaces of the oil tank by the polishing structure (4). The polishing structure (4) includes a flexible polishing base belt (41) movably disposed on the side of the support plate (3). A flexible mounting belt (42) is provided on the inner side of the flexible polishing base belt (41). An mounting groove (43) is provided on the inner side of the flexible mounting belt (42). A metal chain that meshes with the large transmission wheel (5) and the small transmission wheel (6) is provided on the inner side of the mounting groove (43).

2. The device for machining the inner arc surface of the fuel tank for gasoline generator set production according to claim 1, characterized in that: The drive mechanism (7) includes a rotary cylinder (71) disposed on the side of the support plate (3). The end of the rotary cylinder (71) is provided with an output shaft (73). The outer side of the output shaft (73) is fitted with an active drive wheel (72) connected to the inner side of the flexible mounting belt (42), and the outer side of the active drive wheel (72) meshes with a metal chain.

3. The device for machining the inner arc surface of the fuel tank for gasoline generator set production according to claim 2, characterized in that: The arc surface adjustment mechanism (8) includes a connecting plate (81) movably sleeved inside the drive wheel (72). A sliding groove (83) is provided on the side of the connecting plate (81). A sliding plate (89) is slidably arranged inside the sliding groove (83). A movable plate (88) is provided at the bottom of the sliding plate (89) and is movably connected to the inside of the large drive wheel (5).

4. The device for machining the inner arc surface of the fuel tank for gasoline generator set production according to claim 3, characterized in that: The slide plate (89) has a limiting groove (813) on its side. The top of the inner side of the limiting groove (813) is provided with a first inclined block (814). The side of the support plate (3) is provided with a telescopic cylinder (82). The output end of the telescopic cylinder (82) is provided with a double-sided inclined plate (84) that is movably connected to the inclined surface of the first inclined block (814). The side of the connecting plate (81) is provided with a connecting rod (87) that is connected to the telescopic cylinder (82).

5. The device for machining the inner arc surface of the fuel tank for gasoline generator set production according to claim 4, characterized in that: The slide plate (89) is movably provided with a sleeve plate (810) on its side. A spring (815) is provided between the sleeve plate (810) and the movable plate (88). Inside the sleeve plate (810) is a second inclined block (816) that is movably connected to the inclined surface of the double-sided inclined plate (84).

6. The device for machining the inner arc surface of the fuel tank for gasoline generator set production according to claim 5, characterized in that: A special-shaped plate (85) is movably provided on the inner side of the sleeve plate (810), and a fixing plate (86) is provided at the end of the special-shaped plate (85). The fixing plate (86) is movably sleeved inside the small transmission wheel (6).

7. The device for machining the inner arc surface of the fuel tank for gasoline generator set production according to claim 6, characterized in that: The small transmission wheel (6) is fitted with a limiting clamp rod (811), and the large transmission wheel (5) has an annular groove (817) on its inner side. A rotating rod (812) connected to the end of the limiting clamp rod (811) is movably arranged on the inner side of the annular groove (817).

8. The device for machining the inner arc surface of the fuel tank for gasoline generator set production according to claim 3, characterized in that: The polishing structure (4) is provided with a bidirectional transmission mechanism (9) on its inner side, which is used to more accurately control the movement of the large transmission wheel (5) and the small transmission wheel (6). The bidirectional transmission mechanism (9) includes two horizontal plates (97) arranged on the side of the connecting plate (81), and a rotating shaft (98) is arranged between the two horizontal plates (97).

9. The device for machining the inner arc surface of the fuel tank for gasoline generator set production according to claim 8, characterized in that: Gear 1 (95) is sleeved on the outside of the rotating shaft (98). A drive rack (93) is provided between the gear 1 (95) and the sleeve plate (810). The drive rack (93) meshes with the gear 1 (95). A drive plate (92) connected to the output end of the telescopic cylinder (82) is provided at the bottom of the drive rack (93).

10. The device for machining the inner arc surface of the fuel tank for gasoline generator set production according to claim 9, characterized in that: The side of the slide plate (89) is provided with a driven rack (94), and the outer side of the rotating shaft (98) is fitted with a gear two (96) that meshes with the driven rack (94). Two L-shaped rods (91) are provided between the side of the connecting plate (81) and the rotating cylinder (71).

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