A riveting device for fuel filler pipes

Abstract

The application discloses a riveting device for a fuel filler pipe, two through holes are formed in the top of a rack; a mounting plate is arranged in the interior of the rack, the plate length direction of the mounting plate is arranged in the same direction as the length direction of the rack; two groups of clamping assemblies are symmetrically arranged on the mounting plate and are in sliding fit with the mounting plate along the plate length direction of the mounting plate; a driving piece is arranged between the two groups of clamping assemblies, and the two working ends of the driving piece are fixedly connected with the corresponding clamping assemblies; two connecting rod groups are arranged in the middle of the corresponding clamping assemblies; the shaft centers of the two connecting rod groups are arranged in the same core as the corresponding through holes, and a top pressing assembly is arranged on the top of the rack. In the application, the two groups of symmetrically arranged clamping assemblies are linked through the driving piece, so that the positioning deviation caused by unilateral force application is avoided. The connecting rod groups drive the clamping assemblies to advance or retreat towards the hole core of the through hole, so that the riveting force application direction is always coincident with the workpiece axis, and the machining position of the fuel filler pipe and the riveting path can always be in the same axial degree.

Description

Technical Field

[0001] This application relates to the field of machining equipment technology, and in particular to a riveting device for a refueling pipe. Background Technology

[0002] In a car's fuel system, the filler hose is a crucial component of the fuel tank, and its quality directly affects the safety and sealing of fuel filling.

[0003] Currently, most riveting processes for refueling hoses utilize single-station riveting equipment. This equipment can only rivet one hose at a time, resulting in low production efficiency and failing to meet the growing market demand. Existing riveting fixtures lack proper positioning during hose riveting. After clamping, the target riveting position of the hose and the movement path of the rivet head are not guaranteed to be coaxial, causing the riveting force to act on unexpected parts of the fitting. This can lead to weak riveting, localized deformation, surface damage, or even cracking of the hose. Furthermore, existing fixtures typically cannot flexibly adjust the riveting position of the hose according to actual needs during the riveting process. Once the workpiece is fixed, its riveting point is limited. If riveting is required at different locations on the same fitting, multiple independent drive sources must be used to control the riveting blocks at different positions, increasing manufacturing costs and maintenance burden.

[0004] Therefore, there is an urgent need for a riveting device for refueling pipes to solve the above problems. Utility Model Content

[0005] This application provides a riveting device for refueling pipes, which aims to ensure that the processing position and riveting path of the refueling pipe are always on the same axis, while reducing manufacturing costs and maintenance burden.

[0006] To achieve the above objectives, this application provides the following technical solution: A riveting device for a refueling pipe includes a frame, a mounting plate, two sets of clamping assemblies, two sets of connecting rod assemblies, a connecting rod assembly, and a pressing assembly; The frame is placed horizontally on the working surface, and two through holes are opened at the top of the frame; The mounting plate is located inside the frame, and its length direction is aligned with the length direction of the frame. Two sets of clamping components are symmetrically arranged on the mounting plate and slide in contact with the mounting plate along its length. The driving component is positioned between two sets of clamping assemblies, and the two working ends of the driving component are fixedly connected to the corresponding clamping assemblies. The two linkage assemblies are positioned in the middle of their respective clamping assemblies, enabling them to move the clamping blocks of the clamping assemblies closer to or further apart. The axes of the two linkage assemblies are concentric with their corresponding through holes. The top pressure assembly is located at the top of the frame, and its working end can pass through the corresponding through hole to approach or move away from the connecting rod assembly.

[0007] Furthermore, the mounting plate has multiple grooves recessed on its surface to allow corresponding clamping components to move closer or further apart, with the groove length direction aligned with the length direction of the mounting plate.

[0008] Furthermore, the clamping assembly includes two clamping blocks, multiple guide blocks, two riveting cylinders, two elastic elements, and two push rods; Two clamping blocks are symmetrically arranged on the mounting plate, and can move closer or further apart along the length of the mounting plate. The bottom of the two clamping blocks is recessed with receiving grooves for accommodating the connecting rod assembly. Multiple guide blocks are fixedly installed at the bottom of the corresponding clamping block and spaced apart along the width direction of the clamping block. The periphery of the multiple guide blocks slides in contact with the groove wall of the corresponding slide. Two riveting cylinders are fixedly mounted on the top of the corresponding clamping blocks, and the output ends of the two riveting cylinders are on the same axis. Two elastic elements are movably positioned in the middle of the corresponding clamping blocks; One end of each of the two push rods is positioned at the end of the corresponding elastic element near the link assembly, and the other end is positioned at the end of the elastic element away from the link assembly.

[0009] Furthermore, the linkage assembly includes a fixed rod, a rotating rod, a first connecting rod, a second connecting rod, a sliding sleeve, and a rotating seat; The fixing rod is vertically mounted on the mounting plate, and the core of the fixing rod and the center line of symmetry of the two clamping blocks are in the same plane; The rotating rod is rotatably mounted around the fixed rod, and the axial length direction of the rotating rod is perpendicular to the axial length direction of the fixed rod. One end of the first connecting rod is rotatably connected to the bottom of the clamping block located on one side of the rotating rod, and the other end is rotatably connected to one end of the rotating rod. One end of the second link is rotatably connected to the bottom of another clamping block, and the other end is rotatably connected to the end of the rotating rod away from the first link; The sliding sleeve is fitted around the periphery of the fixed rod and abuts against the end of the top rod away from the clamping block. When the end of the top rod away from the clamping block abuts against the periphery of the sliding sleeve, the sliding sleeve can move upward along the axial length of the fixed rod and abut against the bottom of the rotating seat. The rotating seat is rotatably mounted on the top of the fixed rod. The middle of the rotating seat is recessed to accommodate the workpiece to be processed. The bottom of the rotating seat abuts against the top of the sliding sleeve, forming a rotational fit.

[0010] Furthermore, the top of the sliding sleeve is provided with multiple top blocks at equal intervals, and the end of the multiple top blocks near the rotating seat is inclined; the end of the rotating seat near the sliding sleeve is provided with multiple wedges at equal intervals, and the end of the multiple wedges near the sliding sleeve is inclined, and is staggered with the inclined surface of the corresponding top block.

[0011] Furthermore, the top-pressure assembly includes a support frame, a telescopic cylinder, and a pressure block; The L-shaped support frame is vertically installed on the top of the frame, and the horizontal part of the support frame extends into the through hole of the frame. The fixed end of the telescopic cylinder is fixedly connected to the bottom end of the horizontal part of the support frame, and the movable part of the telescopic cylinder can move closer to or away from the frame. The pressure block is fixedly installed at the free end of the telescopic cylinder, and the cross-sectional profile of the pressure block is consistent with the cross-sectional profile of the top of the rotating seat.

[0012] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages: In this application, the through-hole at the top of the frame provides a vertical movement channel for the top-pressing assembly, and the mounting plate, positioned along the length of the frame, ensures that the sliding trajectory of the clamping assembly is consistent with the overall layout of the device. Two symmetrically arranged clamping assemblies are linked and controlled by a drive mechanism to achieve synchronous clamping actions, avoiding positioning deviations caused by unilateral force application. The sliding fit design between the clamping assembly and the mounting plate allows for flexible adjustment of the clamping distance according to the workpiece size. The mechanical linkage design between the linkage assembly and the clamping assembly, through the concentric arrangement of the shaft and the through-hole, ensures that the riveting force direction always coincides with the workpiece axis, solving the problem of riveting force offset in traditional devices. The top-pressing assembly applies vertical pressure to the linkage assembly through the through-hole, forming a synergistic effect of axial riveting force and radial clamping force, ensuring stability during the riveting process and enabling rapid switching between different riveting positions. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a structural schematic diagram of the assembled state provided in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the two sets of clamping components and connecting rods provided in the embodiments of this application; Figure 3 This is a schematic diagram of the clamping assembly and linkage provided in the embodiments of this application; Figure 4A cross-sectional view of the clamping block provided in an embodiment of this application; Figure 5 This is a schematic diagram of the linkage assembly provided in an embodiment of this application; Figure 6 This is a schematic diagram of the mounting plate provided in an embodiment of this application.

[0015] Icons: 1-Frame; 2-Through hole; 10-Mounting plate; 11-Slide groove; 20-Clamping assembly; 21-Clamping block; 211-Accommodating groove; 22-Guide block; 23-Riveting cylinder; 24-Elastic element; 25-Top rod; 30-Linkage assembly; 31-Fixing rod; 32-Rotating rod; 33-First connecting rod; 34-Second connecting rod; 35-Sliding sleeve; 351-Top block; 36-Rotating seat; 361-Groove; 362-Wedge block; 40-Drive component; 50-Top pressing assembly; 51-Support frame; 52-Telescopic cylinder; 53-Pressure block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0017] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0018] Combination Figures 1-6As shown, a riveting device for a refueling pipe includes a frame 1, a mounting plate 10, two sets of clamping assemblies 20, two sets of connecting rods 30, and a pressing assembly 50. The frame 1 is placed horizontally on a working surface, and two through holes 2 are formed at the top of the frame 1. The mounting plate 10 is disposed inside the frame 1, and the length direction of the mounting plate 10 is aligned with the length direction of the frame 1. The two sets of clamping assemblies 20 are symmetrically arranged on the mounting plate 10 and form a sliding fit with the mounting plate 10 along its length direction. A driving member 40 is disposed between the two sets of clamping assemblies 20, and the two working ends of the driving member 40 are fixedly connected to the corresponding clamping assembly 20. Two linkage groups 30 are placed in the middle of the corresponding clamping assembly 20, which can drive the clamping block 21 of the clamping assembly 20 to move closer or further away from each other. The axis of the two linkage groups 30 is coaxial with the corresponding through hole 2. The top pressing assembly 50 is set on the top of the frame 1, and its working end can pass through the corresponding through hole 2 to move closer or further away from the linkage group 30.

[0019] In the above scheme, the through hole 2 at the top of the frame 1 provides a vertical movement channel for the top pressing assembly 50, and the mounting plate 10 is set along the length of the frame 1 to ensure that the sliding trajectory of the clamping assembly 20 is consistent with the overall layout of the device. The two sets of symmetrically arranged clamping assemblies 20 are linked and controlled by the drive component 40 to achieve the synchronization of clamping actions and avoid positioning deviation caused by unilateral force application. The sliding fit design between the clamping assembly 20 and the mounting plate 10 allows the clamping distance to be flexibly adjusted according to the workpiece size. The mechanical linkage design between the connecting rod assembly 30 and the clamping assembly 20, through the arrangement of the axis and the through hole 2 being concentric, ensures that the riveting force direction always coincides with the workpiece axis, solving the problem of riveting force offset in traditional devices. The top pressing assembly 50 applies vertical pressure to the connecting rod assembly 30 through the through hole 2, forming a synergistic effect of axial riveting force and radial clamping force, which not only ensures the stability of the riveting process, but also enables rapid switching between different riveting positions. Workers can control the drive component 40 to simultaneously drive the clamping components located on both sides of the drive component 40 to constrain the workpiece and perform riveting operations, saving manpower and resources.

[0020] The mounting plate 10 has a plurality of grooves 11 recessed on its surface for corresponding clamping components 20 to move closer or further apart from each other. The length direction of the grooves 11 is set in the same direction as the length direction of the mounting plate 10.

[0021] In the above scheme, the length direction of the slide groove 11 is the same as that of the mounting plate 10, so that the clamping assembly 20 always maintains a movement trajectory consistent with the length direction of the mounting plate 10 when sliding along the slide groove 11, avoiding riveting position deviation caused by offset. The distribution of multiple slide grooves 11 enhances the stability of the clamping assembly 20 during movement, and by constraining the degrees of freedom of the clamping assembly 20 through multi-point contact, it prevents lateral offset or tilting during sliding. The groove wall of the slide groove 11 forms a sliding fit with the guide block 22, which reduces frictional resistance and ensures the coaxiality of the clamping block 21 during movement, so that the two sets of clamping assemblies 20 can move synchronously and symmetrically, ensuring that the axis of the oiling pipe and the movement path of the rivet head are precisely aligned during riveting.

[0022] The clamping assembly 20 includes two clamping blocks 21, multiple guide blocks 22, two riveting cylinders 23, two elastic elements 24, and two push rods 25. The two clamping blocks 21 are symmetrically arranged on the mounting plate 10, and can move closer or further apart along the length of the mounting plate 10. The bottom of each clamping block 21 has a recessed receiving groove 211 for accommodating the connecting rod assembly 30. Multiple guide blocks 22 are fixedly disposed at the bottom of their respective clamping blocks 21 and spaced apart along the width of the clamping blocks 21. The periphery of each guide block 22 slides in contact with the groove wall of its corresponding sliding groove 11. The two riveting cylinders 23 are fixedly disposed at the top of their respective clamping blocks 21, and their output ends are coaxial. The two elastic elements 24 are movably disposed in the middle of their respective clamping blocks 21. One end of each push rod 25 is disposed at the end of the corresponding elastic element 24 near the connecting rod assembly 30, and the other end is disposed at the end of the elastic element 24 away from the connecting rod assembly 30.

[0023] In the above scheme, bidirectional synchronous clamping is achieved through symmetrically arranged clamping blocks 21, and the cooperation between the bottom receiving groove 211 and the connecting rod assembly 30 forms spatial constraints. Guide blocks 22 are arranged at intervals along the width direction of clamping blocks 21, and form multi-line contact guidance through sliding contact with the groove wall of slide groove 11, effectively suppressing the deflection of clamping blocks 21 during movement. Riveting cylinders 23 are symmetrically installed on the top of clamping blocks 21 and their output ends are coaxially set to ensure the consistency of the riveting force direction. Elastic element 24 forms a flexible buffer mechanism in the middle of clamping block 21, and the deformation of elastic element 24 is converted into the driving stroke of connecting rod assembly 30 through push rod 25, which not only ensures the controllable transmission of clamping force, but also absorbs the impact vibration during the riveting process. The two ends of push rod 25 are respectively connected to elastic element 24 to form a mechanical linkage relationship, so that the displacement of clamping block 21 can be precisely adjusted by the deformation of elastic element 24.

[0024] In practice, the clamping block 21 has a recessed mounting groove 212 for mounting the elastic element 24 in the middle. The peripheral surface of the elastic element 24 slides in contact with the inner wall of the mounting groove 212. When the clamping block 21 approaches the workpiece, the push rod 25 presses the elastic element 24 to slide in the mounting groove 212, and part of the peripheral surface of the push rod 25 slides in contact with the inner wall of the mounting groove 212.

[0025] The linkage assembly 30 includes a fixed rod 31, a rotating rod 32, a first connecting rod 33, a second connecting rod 34, a sliding sleeve 35, and a rotating seat 36. The fixed rod 31 is vertically mounted on the mounting plate 10, and its axis is in the same plane as the symmetrical center lines of the two clamping blocks 21. The rotating rod 32 is rotatably mounted around the fixed rod 31, and its axial length is perpendicular to that of the fixed rod 31. One end of the first connecting rod 33 is rotatably connected to the bottom of a clamping block 21 located on one side of the rotating rod 32, and its other end is rotatably connected to one end of the rotating rod 32. One end of the second connecting rod 34 is rotatably connected to the bottom of another clamping block 21, and its other end is rotatably connected to the end of the rotating rod 32 away from the first connecting rod 33. The sliding sleeve 35 is fitted around the periphery of the fixed rod 31 and abuts against the end of the top rod 25 away from the clamping block 21. When the end of the top rod 25 away from the clamping block 21 abuts against the periphery of the sliding sleeve 35, the sliding sleeve 35 can move upward along the axial length of the fixed rod 31 and abut against the bottom of the rotating seat 36. The rotating seat 36 is rotatably mounted on the top of the fixed rod 31. The middle part of the rotating seat 36 is recessed with a groove 361 for accommodating the workpiece to be processed. The bottom of the rotating seat 36 abuts against the top of the sliding sleeve 35, forming a rotational fit.

[0026] In the above scheme, the coplanar design of the fixed rod 31 and the clamping block 21's symmetrical center lines ensures the symmetry of the clamping block 21's movement during riveting, thereby ensuring that the riveting joint is coaxial with the target position. The linkage structure of the rotating rod 32 with the first connecting rod 33 and the second connecting rod 34 allows the two clamping blocks 21 to move synchronously in opposite directions under the action of the driving component 40, avoiding positioning deviation caused by unilateral force application. The abutting cooperation between the sliding sleeve 35 and the top rod 25 converts the linear motion of the clamping block 21 into the axial displacement of the sliding sleeve 35 along the fixed rod 31, and then drives the rotating seat 36 to rotate through the inclined surface contact between the sliding sleeve 35 and the bottom of the rotating seat 36, realizing adaptive angle adjustment of the workpiece during the riveting process. The groove 361 in the middle of the rotating seat 36 forms an enclosing positioning for the workpiece, and in conjunction with the lifting action of the sliding sleeve 35, it can dynamically compensate for the workpiece's position error during riveting, ensuring that the riveting force always acts on the preset area. In practice, the workpiece to be processed (oil refueling pipe) of this application can be sleeved on the periphery of the rotating seat 36 or embedded in the groove 361 of the rotating seat 36.

[0027] In practice, the end of the push rod 25 away from the clamping block 21 in this application has a tapered structure, and part of the circumferential surface of the sliding sleeve 35 is inclined and abuts against the end of the push rod 25 away from the clamping block 21.

[0028] Multiple top blocks 351 are evenly spaced at the top of the sliding sleeve 35, and the ends of the multiple top blocks 351 near the rotating seat 36 are inclined. Multiple wedges 362 are evenly fixed at the end of the rotating seat 36 near the sliding sleeve 35, and the ends of the multiple wedges 362 near the sliding sleeve 35 are inclined, and are offset from the inclined surfaces of the corresponding top blocks 351.

[0029] In the above scheme, the inclined surfaces of the equally spaced top blocks 351 at the top of the sliding sleeve 35 and the equally spaced inclined surfaces of the wedge blocks 362 at the bottom of the rotating seat 36 are staggered to form an interlocking inclined surface contact structure. The inclined surfaces of the top blocks 351 and the wedge blocks 362 form an asymmetrical contact. When the sliding sleeve 35 moves axially along the fixed rod 31, the inclined surface contact generates a component force that causes the rotating seat 36 to rotate circumferentially. This reduces the sliding friction resistance between the sliding sleeve 35 and the rotating seat 36, and the component force generated by the inclined surface misalignment is converted into rotational torque, enabling the rotating seat 36 to achieve self-rotation adjustment while bearing axial pressure. The equal spacing of the top blocks 351 and the wedge blocks 362 ensures the uniform transmission of contact force and avoids component deformation caused by local stress concentration.

[0030] The top-pressing assembly 50 includes a support frame 51, a telescopic cylinder 52, and a pressure block 53. The L-shaped support frame 51 is vertically mounted on the top of the frame 1, and its horizontal portion extends toward the through hole 2 of the frame 1. The fixed end of the telescopic cylinder 52 is fixedly connected to the bottom end of the horizontal portion of the support frame 51, and the movable portion of the telescopic cylinder 52 can move closer to or further away from the frame 1. The pressure block 53 is fixedly mounted on the free end of the telescopic cylinder 52, and the cross-sectional profile of the pressure block 53 is consistent with the cross-sectional profile of the top of the rotating seat 36.

[0031] In the above scheme, the top pressing assembly 50 provides a stable mounting base for the telescopic cylinder 52 through the horizontal extension structure of the L-shaped support frame 51, ensuring that the cylinder drive path coincides with the axis of the through hole 2 of the frame 1. The linear motion of the telescopic cylinder 52 drives the pressing block 53 to move precisely forward and backward in the vertical direction. The design of the pressing block 53 and the top contour of the rotating seat 36 are consistent, so that they automatically align upon contact, ensuring that the riveting force is coaxial with the workpiece axis.

[0032] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0033] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A riveting device for a refueling pipe, characterized in that, It includes a frame (1), a mounting plate (10), two sets of clamping assemblies (20), a drive unit (40), two sets of linkages (30), and a top pressing assembly (50); The frame (1) is placed horizontally on the working surface, and two through holes (2) are opened on the top of the frame (1). The mounting plate (10) is disposed inside the frame (1), and the length direction of the mounting plate (10) is in the same direction as the length direction of the frame (1); The two sets of clamping components (20) are symmetrically arranged on the mounting plate (10) and slide in cooperation with the mounting plate (10) along its length. The driving component (40) is disposed between the two sets of clamping assemblies (20), and the two working ends of the driving component (40) are fixedly connected to the corresponding clamping assembly (20); The two connecting rod groups (30) are placed in the middle of the corresponding clamping assembly (20), which can drive the clamping block (21) of the clamping assembly (20) to move closer or further away from each other. The axis of the two connecting rod groups (30) is co-centered with the corresponding through hole (2). The top pressure assembly (50) is located on the top of the frame (1), and its working end can pass through the corresponding through hole (2) to approach or move away from the connecting rod assembly (30).

2. The riveting device for refueling pipes according to claim 1, characterized in that, The mounting plate (10) has a plurality of grooves (11) recessed on its surface to allow the corresponding clamping components (20) to move closer or further apart from each other. The groove length direction of the grooves (11) is set in the same direction as the length direction of the mounting plate (10).

3. The riveting device for refueling pipes according to claim 2, characterized in that, The clamping assembly (20) includes two clamping blocks (21), multiple guide blocks (22), two riveting cylinders (23), two elastic elements (24), and two push rods (25). The two clamping blocks (21) are symmetrically arranged on the mounting plate (10) and can move closer or further away from each other along the length of the mounting plate (10). The bottom of the two clamping blocks (21) is recessed with a receiving groove (211) for accommodating the connecting rod assembly (30). Multiple guide blocks (22) are fixedly disposed at the bottom of the corresponding clamping block (21) and spaced apart along the width direction of the clamping block (21). The periphery of the multiple guide blocks (22) slides in contact with the groove wall of the corresponding slide groove (11). The two riveting cylinders (23) are fixedly mounted on the top of the corresponding clamping block (21), and the output ends of the two riveting cylinders (23) are on the same axis. Two elastic elements (24) are movably disposed in the middle of the corresponding clamping blocks (21); One end of each of the two push rods (25) is located at the end of the corresponding elastic element (24) near the link assembly (30), and the other end is located at the end of the elastic element (24) away from the link assembly (30).

4. The riveting device for refueling pipes according to claim 3, characterized in that, The linkage assembly (30) includes a fixed rod (31), a rotating rod (32), a first connecting rod (33), a second connecting rod (34), a sliding sleeve (35), and a rotating seat (36). The fixing rod (31) is vertically mounted on the mounting plate (10), and the core of the fixing rod (31) and the center line of symmetry of the two clamping blocks (21) are in the same plane; The rotating rod (32) is rotatably disposed around the periphery of the fixed rod (31), and the axial length direction of the rotating rod (32) is perpendicular to the axial length direction of the fixed rod (31). One end of the first connecting rod (33) is rotatably connected to the bottom of the clamping block (21) located on one side of the rotating rod (32), and the other end is rotatably connected to one end of the rotating rod (32); One end of the second connecting rod (34) is rotatably connected to the bottom of another clamping block (21), and the other end is rotatably connected to the end of the rotating rod (32) away from the first connecting rod (33); The sliding sleeve (35) is fitted around the periphery of the fixed rod (31) and abuts against the end of the top rod (25) away from the clamping block (21). When the end of the top rod (25) away from the clamping block (21) abuts against the periphery of the sliding sleeve (35), the sliding sleeve (35) can move upward along the axial length of the fixed rod (31) and abut against the bottom of the rotating seat (36). The rotating seat (36) is rotatably mounted on the top of the fixed rod (31). The middle part of the rotating seat (36) is recessed with a groove (361) for accommodating the workpiece to be processed. The bottom of the rotating seat (36) abuts against the top of the sliding sleeve (35) and forms a rotational fit.

5. The riveting device for refueling pipes according to claim 4, characterized in that, The top of the sliding sleeve (35) is provided with a plurality of top blocks (351) at equal intervals, and the ends of the plurality of top blocks (351) near the rotating seat (36) are inclined; the rotating seat (36) is provided with a plurality of wedges (362) at equal intervals near the end of the sliding sleeve (35), and the ends of the plurality of wedges (362) near the sliding sleeve (35) are inclined, and are offset from the inclined surfaces of the corresponding top blocks (351).

6. The riveting device for refueling pipes according to claim 4, characterized in that, The top pressure assembly (50) includes a support frame (51), a telescopic cylinder (52), and a pressure block (53); The L-shaped support frame (51) is vertically disposed on the top of the frame (1), and the horizontal part of the support frame (51) extends toward the through hole (2) of the frame (1). The fixed end of the telescopic cylinder (52) is fixedly connected to the bottom end of the horizontal part of the support frame (51), and the movable part of the telescopic cylinder (52) can move closer to or away from the frame (1). The pressure block (53) is fixedly disposed at the free end of the telescopic cylinder (52), and the cross-sectional profile of the pressure block (53) is consistent with the cross-sectional profile of the top of the rotating seat (36).

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