Fastening system for coaxial multiple bolts

Abstract

The invention relates to a coaxial multi-bolt fastening system which comprises a frame body, a plurality of floating frame assemblies, a plurality of shaft rotation driving parts, a rotation driving assembly and a radial adjusting assembly, the frame body is provided with a vertically-arranged mounting disc, the floating frame assemblies are all assembled on one side of the mounting disc and distributed on the same circumference, and the shaft rotation driving parts are arranged on the mounting disc. The radial adjusting assembly is installed on the installation disc, connected with the floating frame assemblies and used for synchronously driving the floating frame assemblies to synchronously move outwards or inwards in the radial direction, the shaft rotation driving pieces are installed on the floating frame assemblies in a one-to-one correspondence mode, and the same ends of the shaft rotation driving pieces are connected with the air screwdriver sleeves respectively. The rotation driving assembly is in transmission connection with the multiple sets of shaft rotation driving pieces and used for driving the multiple sets of shaft rotation driving pieces to drive the corresponding air screwdriver sleeves to rotate synchronously in the same direction. The device has the advantages that the function of synchronous tightening or loosening of multiple coaxial bolts can be achieved, the whole assembling process can be fast, and the bolt torque is more balanced.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical assembly, and in particular to a coaxial multi-bolt fastening system. Background Art

[0002] During the assembly process of agricultural machinery such as harvesters, it is necessary to tighten or loosen multiple bolts distributed coaxially. The conventional assembly method is to manually move the parts to be assembled (such as wheels, flanges, etc.) to the vicinity of the parts to be assembled, and then use bolts to loosen each bolt on the parts to be installed, and then tighten them one by one by one using an electric wrench or a manual wrench. After each tightening, the torque of each bolt needs to be adjusted to achieve balance, which reduces efficiency and is labor-intensive.

[0003] Based on this, it is necessary to develop a coaxial multi-bolt fastening system to overcome the above technical problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a coaxial multi-bolt fastening system, which effectively overcomes the defects of the prior art.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A coaxial multi-bolt fastening system includes a frame body, multiple groups of floating frame assemblies, multiple groups of axial rotation driving members, a rotation driving assembly and a radial adjustment assembly. The frame body has a vertically arranged mounting plate. Multiple groups of the floating frame assemblies are all assembled on one side of the mounting plate and distributed on the same circumference. The radial adjustment assembly is mounted on the mounting plate and connected to the multiple groups of the floating frame assemblies for synchronously driving the multiple groups of the floating frame assemblies to move radially outward or inward synchronously. The multiple groups of the axial rotation driving members are respectively and correspondingly mounted on the multiple groups of the floating frame assemblies. The same ends of the multiple groups of the axial rotation driving members are respectively connected with air-batch sleeves. The rotation driving assembly is respectively connected to the multiple groups of the axial rotation driving members for driving the multiple groups of the axial rotation driving members to drive the corresponding air-batch sleeves to rotate synchronously in the same direction.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the frame includes two columns and a base plate, the two columns are respectively fixed vertically and spaced apart on the upper ends of the base plate, the two sides of the mounting plate are respectively connected and fixed to the upper ends of the two columns, and the columns are telescopic columns.

[0009] Furthermore, it also includes a mobile carrier, which is provided with a track parallel to the rotation center line of the above-mentioned axial rotation driving member. The above-mentioned base plate is installed on the above-mentioned track and can slide along the above-mentioned track. A driving member is installed on one side of the above-mentioned base plate to push it to move along the track.

[0010] Furthermore, the floating frame assembly includes a fixed plate, a movable plate and two guide rods. The fixed plate is fixed to an outer edge of one side of the mounting plate, the movable plate is arranged in parallel on a side of the fixed plate close to the center of the mounting plate, the two guide rods are arranged in parallel and spaced apart, and one end of the two guide rods is respectively vertically connected and fixed to the movable plate, the other ends of the two guide rods respectively penetrate the fixed plate, the other ends of the two guide rods are respectively provided with limit plates, an elastic member is connected between the fixed plate and the movable plate, a strip-shaped connecting rod extending radially along the circumference is provided in the middle of the movable plate, strip holes corresponding to the connecting rods are provided on the mounting plate, the shaft rotation driving member is mounted on the connecting rod and penetrates the strip hole, and the radial adjustment assembly is connected to multiple groups of connecting rods of the floating frame assembly.

[0011] Furthermore, the radial adjustment assembly includes a first rotation drive device and a dividing positioning disk, the dividing positioning disk being rotatably mounted at the center of one side of the mounting disk and being coaxially distributed with the multiple groups of the axial rotation drive members, the first rotation drive device being mounted at the center of the other side of the mounting disk and being connected with the rotation center of the dividing positioning disk, a plurality of limit plates corresponding to the multiple groups of the connecting rods are arranged at the outer edge of the dividing positioning disk along its circumferential direction, the plurality of limit plates are arranged as a straight section on the same side along the circumferential direction, and an arc section on the other side, and a plurality of continuously distributed arc grooves are arranged on the arc section, the end of the connecting rod is in contact with the outer edge of the dividing positioning disk, the first rotation drive device is used to drive the dividing positioning disk to rotate, and during the rotation process, the end of the connecting rod slides one by one along the edges of the plurality of limit plates, thereby realizing the radial movement of the axial rotation drive member driven by the floating frame assembly.

[0012] Furthermore, the elastic member is a spring and is sleeved on the guide rod.

[0013] Furthermore, the shaft rotation driving member includes an electric air screw structure.

[0014] Further, the above-mentioned rotation drive assembly includes a support frame, a second rotation drive device, a gear transmission assembly and multiple telescopic universal joint transmission shafts. The above-mentioned support frame is installed on the other side of the above-mentioned mounting plate, and the above-mentioned second rotation drive device is installed on the above-mentioned support frame and is transmission-connected to the above-mentioned gear transmission assembly. One ends of the multiple telescopic universal joint transmission shafts are respectively and one-to-one connected to the other ends of the multiple groups of shaft rotation driving members, and the other ends of the multiple telescopic universal joint transmission shafts are respectively connected to the above-mentioned gear transmission assemblies. The above-mentioned second rotation drive device is used to drive the above-mentioned gear transmission assembly to operate, thereby driving the multiple groups of shaft rotation driving members to operate through the multiple telescopic universal joint transmission shafts to realize the synchronous and unidirectional rotation of the multiple air-brush sleeves.

[0015] Furthermore, the gear transmission assembly includes a driving gear and a plurality of passive gears, the driving gear is transmission-connected to the second rotation drive device, the plurality of passive gears are respectively assembled on the support frame through shaft rotation and are distributed around the driving gear, the driving gear is meshed with the passive gear, and the other ends of the plurality of telescopic universal transmission shafts are respectively connected to the shafts of the plurality of passive gears in a one-to-one correspondence.

[0016] Furthermore, the support frame includes a first mounting plate and a second mounting plate parallel to each other, the first mounting plate and the second mounting plate are arranged in parallel on the other side of the mounting disk, the edges of the first mounting plate and the second mounting plate are commonly connected with a diagonal support rod connected and fixed to the mounting disk, the driving gear and the passive gear are respectively arranged between the first mounting plate and the second mounting plate, the passive gear is rotatably connected to the first mounting plate and the second mounting plate through a shaft, the second rotation drive device is installed on the first mounting plate or the second mounting plate, and its driving end extends into the center between the first mounting plate or the second mounting plate, and is drivingly connected to the driving gear.

[0017] The beneficial effects of the present invention are: reasonable structural design, capable of realizing the function of synchronously tightening or loosening coaxial multiple bolts, making the entire assembly process quick and the bolt torque more balanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural front view of the coaxial multi-bolt fastening system of the present invention;

[0019] Figure 2 It is a rear view of the structure of the coaxial multi-bolt fastening system of the present invention;

[0020] Figure 3 It is a structural side view of the coaxial multi-bolt fastening system of the present invention;

[0021] Figure 4 It is a bottom view of the structure of the coaxial multi-bolt fastening system of the present invention;

[0022] Figure 5 It is a side view of the structure of another embodiment of the coaxial multi-bolt fastening system of the present invention.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Frame; 2. Floating frame assembly; 3. Shaft rotation drive member; 4. Mounting plate; 5. Mobile carrier; 11. Column; 12. Bottom plate; 21. Fixed plate; 22. Movable plate; 23. Guide rod; 24. Elastic member; 25. Connecting rod; 41. Strip hole; 61. First rotation drive device; 62. Indexing positioning plate; 71. Support frame; 72. Second rotation drive device; 73. Telescopic universal transmission shaft; 74. Driving gear; 75. Passive gear; 621. Limiting piece; 711. First mounting plate; 712. Second mounting plate. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] Example

[0027] like Figure 1 , 2 As shown in Figures 3 and 4, the coaxial multi-bolt fastening system of this embodiment includes a frame body 1, multiple groups of floating frame assemblies 2, multiple groups of axial rotation driving members 3, a rotation driving assembly and a radial adjustment assembly. The above-mentioned frame body 1 has a vertically arranged mounting plate 4, and the multiple groups of the above-mentioned floating frame assemblies 2 are all assembled on one side of the above-mentioned mounting plate 4 and are distributed on the same circumference. The above-mentioned radial adjustment assembly is mounted on the above-mentioned mounting plate 4 and connected with the multiple groups of the above-mentioned floating frame assemblies 2, and is used to synchronously drive the multiple groups of the above-mentioned floating frame assemblies 2 to move radially outward or inward synchronously. The multiple groups of the above-mentioned axial rotation driving members 3 are respectively and correspondingly mounted on the multiple groups of the above-mentioned floating frame assemblies 2, and the same ends of the multiple groups of the above-mentioned axial rotation driving members 3 are respectively connected with air-batch sleeves, and the above-mentioned rotation driving assemblies are respectively connected to the multiple groups of the above-mentioned axial rotation driving members 3 in transmission, and are used to drive the multiple groups of the above-mentioned axial rotation driving members 3 to drive the corresponding air-batch sleeves to rotate synchronously in the same direction.

[0028] In the coaxial multi-bolt fastening system of the present embodiment, a plurality of floating frame assemblies 2 are distributed on the same circumference with the center of the mounting plate 4 as the center of the circle, and a plurality of axial rotation drive members 3 are also distributed on the same circumference, and a plurality of air-drilling sleeves are also distributed on the same circumference, and the axes of the three circumferences coincide, so that a plurality of air-drilling sleeves can be respectively sleeved on a plurality of coaxially distributed bolts of a flange or a wheel to disassemble and assemble the nuts. Specifically, when the bolts are sleeved by the air-drilling sleeves, the radial displacement of the plurality of floating frame assemblies 2 is first synchronously adjusted by the radial adjustment assembly (that is, the radial displacement of the plurality of axial rotation drive members 3 is adjusted so that the radius of the circumference where the plurality of axial rotation drive members 3 are located increases or decreases to match the radius of the plurality of bolts on the flange or the wheel, etc.), and then, after the air-drilling sleeves are sleeved on the nuts, the rotation drive assembly is started to synchronously drive the plurality of axial rotation drive members 3 to rotate synchronously in the same direction, so that the plurality of air-drilling sleeves can synchronously tighten or loosen the nuts in the same direction. The overall structural design is reasonable, which can realize the function of synchronous tightening or loosening of coaxial multiple bolts, making the entire assembly process quick and the bolt torque more balanced.

[0029] In this embodiment, the frame 1 includes two columns 11 and a base plate 12. The two columns 11 are respectively fixed vertically and spaced apart on the upper ends of the base plate 12. Both sides of the mounting plate 4 are respectively connected and fixed to the upper ends of the two columns 11. The columns 11 are telescopic columns. The frame 1 has a simple overall structure and can provide stable support. The telescopic movement of the columns 11 can be adjusted in height so that the height of the multiple sets of axial rotation drive members 3 and the air screw sleeves can be adapted to the height of the multiple coaxially distributed bolts and nuts on the wheels or flanges.

[0030] The column 11 may be designed as two sections of mutually inserted pipes, with electric push rods or hydraulic push rods provided inside the two sections to achieve telescopic height adjustment of the column 11 .

[0031] In this embodiment, the mounting disk 4 is a circular disk and is coaxially distributed with the multiple sets of axial rotation driving members 3 .

[0032] As a preferred embodiment, Figure 5 As shown, it also includes a mobile carrier 5, on which is provided a track parallel to the rotation center line of the axial rotation driving member 3, the base plate 12 is mounted on the track and can slide along the track, and one side of the base plate 12 is provided with a driving member m for pushing it to move along the track.

[0033] In the above embodiment, the displacement of the base plate 12 along the track a is adjusted by the driving member to meet the displacement feed amount when the shaft rotating driving member 3 drives the nut to screw in, and the operation is simple and convenient.

[0034] More specifically, the mobile carrier 5 may be a platform with universal wheels at the bottom.

[0035] Of course, the above-mentioned driving member can be an armrest, or an electric propulsion device, such as a cylinder, a hydraulic cylinder, an electric push rod, etc.

[0036] As a preferred embodiment, the floating frame assembly 2 includes a fixed plate 21, a movable plate 22 and two guide rods 23. The fixed plate 21 is fixed to an outer edge of one side of the mounting disk 4. The movable plate 22 is arranged in parallel on one side of the fixed plate 21 close to the center of the mounting disk 4. The two guide rods 23 are arranged in parallel and spaced apart, and one end of the two guide rods 23 is respectively vertically connected and fixed to the movable plate 22. The other ends of the two guide rods 23 respectively penetrate the fixed plate 21. The other ends of the two guide rods 23 are respectively provided with limit plates. An elastic member 24 is connected between the fixed plate 21 and the movable plate 22. A strip-shaped connecting rod 25 extending radially along the circumference is provided in the middle of the movable plate 22. A strip hole 41 corresponding to the connecting rod 25 is provided on the mounting disk 4. The axial rotation driving member 3 is mounted on the connecting rod 25 and penetrates the strip hole 41. The radial adjustment assembly is connected to multiple groups of connecting rods 25 of the floating frame assembly 2.

[0037] In the above-mentioned embodiment, the radial adjustment assembly can drive the connecting rod 25 to move radially inward and outward along the circumference of the multiple groups of floating frame assemblies 2. During the movement, the shaft rotation drive member 3 follows the movement in the strip hole 41 of the mounting plate 4. Specifically, during the outward movement, the elastic member 24 is compressed, and during the inward movement, the elastic member 24 rebounds to cause the return.

[0038] As a preferred embodiment, the radial adjustment assembly includes a first rotation drive device 61 and a graduation positioning disk 62, the graduation positioning disk 62 is rotatably mounted at the center of one side of the mounting disk 4, and is coaxially distributed with the plurality of sets of the shaft rotation drive members 3, the first rotation drive device 61 is mounted at the center of the other side of the mounting disk 4, and is connected to the rotation center of the graduation positioning disk 62, and the outer edge of the graduation positioning disk 62 is provided with a plurality of limit stops corresponding to the plurality of sets of the connecting rods 25 along its circumferential direction. Plate 621, the plurality of limit plates 621 are set as a straight section on the same side along the circumferential direction, and are set as an arc section on the other side, and the arc section is provided with a plurality of continuously distributed arc grooves, the end of the connecting rod 25 contacts the outer edge of the dividing positioning disk 62, the first rotation drive device 61 is used to drive the dividing positioning disk 62 to rotate, and during the rotation process, the end of the connecting rod 25 slides one by one along the edges of the plurality of limit plates 621, thereby realizing the radial movement of the shaft rotation drive member 3 driven by the floating frame assembly 2.

[0039] In the above implementation scheme, the number of the limit pieces 621 is designed to be consistent with the number of the connecting rods 25. When the axial rotation driving member 3 is at the minimum displacement of the circumferential radial direction, the end of the connecting rod 25 is embedded in the notch formed between two adjacent limit pieces 621. When the radius needs to be increased, the first rotation driving device 61 drives the indexing positioning disk 62 to rotate, and the multiple connecting rods 25 will slide relatively along the edge of the arc segment of a corresponding limit piece 621 until they slide to the position where the radius of the limit piece 621 is the largest. If the connection rod 25 continues to rotate, it will move inward along the straight section to the notch defined between the two limit pieces 621, and the maximum radius of the circumference of the axial rotation driving member 3 will return to the minimum. In the process of adjusting the radius increase, the end of the connecting rod 25 will pass through each arc slot on the arc segment. When any displacement stops, the end of the connecting rod 25 will fit into the current corresponding arc slot to play a role in maintaining a certain position. The overall design is very clever, simple and convenient to operate.

[0040] In this embodiment, the first rotation driving device 61 can be a servo motor of an adapted model.

[0041] In this embodiment, the elastic member 24 is a spring and is mounted on the guide rod 23. The structure is compactly assembled and has relatively stable elastic performance.

[0042] In this embodiment, the shaft rotation driving member 3 comprises an electric air screwdriver structure. More specifically, the shaft rotation driving member 3 adopts an electric air screwdriver structure without a motor, one end of which is connected to an air screwdriver sleeve, and the other end of the driving shaft is exposed and connected to the rotation driving assembly.

[0043] As a preferred embodiment, the above-mentioned rotation drive assembly includes a support frame 71, a second rotation drive device 72, a gear transmission assembly and a plurality of telescopic universal joint transmission shafts 73. The above-mentioned support frame 71 is installed on the other side of the above-mentioned mounting plate 4, and the above-mentioned second rotation drive device 72 is installed on the above-mentioned support frame 71 and is connected to the above-mentioned gear transmission assembly in transmission. One ends of the plurality of telescopic universal joint transmission shafts 73 are respectively connected to the other ends of the plurality of groups of the above-mentioned shaft rotation driving members 3 in a one-to-one correspondence, and the other ends of the plurality of telescopic universal joint transmission shafts 73 are respectively connected to the gear transmission assembly. The above-mentioned second rotation drive device 72 is used to drive the above-mentioned gear transmission assembly to operate, thereby driving the plurality of groups of the above-mentioned shaft rotation driving members 3 to operate through the plurality of telescopic universal joint transmission shafts 73, thereby realizing the synchronous and unidirectional rotation of the plurality of the above-mentioned air batch sleeves.

[0044] In the above embodiment, the second rotary drive device 72 drives the gear transmission assembly to drive multiple telescopic universal transmission shafts 73 to rotate synchronously in the same direction, thereby realizing that multiple shaft rotary drive members 3 drive the air screwdriver sleeve to operate synchronously in the same direction. The overall structural design is simple and the operation is stable.

[0045] In this embodiment, the second rotation driving device 72 can adopt a servo motor of an adapted model.

[0046] As a preferred embodiment, the gear transmission assembly includes a driving gear 74 and a plurality of passive gears 75. The driving gear 74 is transmission-connected to the second rotation drive device 72. The plurality of passive gears 75 are respectively assembled on the support frame 71 through shaft rotation and are distributed around the driving gear 74. The driving gear 74 is meshed with the passive gear 75. The other ends of the plurality of telescopic universal transmission shafts 73 are respectively connected to the shafts of the plurality of passive gears 75 in a one-to-one correspondence.

[0047] In the above embodiment, the distribution of the driving gear 74 is coaxial with the circumference of the multiple shaft rotation drive members 3. When the second rotation drive device 72 drives the driving gear 74 to rotate, the multiple passive gears 75 rotate synchronously in the same direction, which can drive the multiple telescopic universal transmission shafts 73 connected to the shafts rotating therewith to rotate, thereby driving the rotating shafts of the multiple shaft rotation drive members 3 to run synchronously in the same direction. More specifically, one driving gear 74 meshes with multiple passive gears 75 to output multiple power, and the power output end of each passive gear 75 transmits power through a telescopic universal transmission shaft 73 (telescopic cross universal coupling) to drive the rotation of the shaft rotation drive member 3. The length of the telescopic universal transmission shaft 73 automatically expands and contracts to adapt to the radial position change of the automatic shaft rotation drive member 3.

[0048] In this embodiment, the support frame 71 includes a first mounting plate 711 and a second mounting plate 712 which are parallel to each other. The first mounting plate 711 and the second mounting plate 712 are arranged in parallel on the other side of the mounting plate 4. The edges of the first mounting plate 711 and the second mounting plate 712 are commonly connected with a diagonal support rod connected and fixed to the mounting plate 4. The driving gear 74 and the passive gear 75 are respectively arranged between the first mounting plate 711 and the second mounting plate 712. The passive gear 75 is rotatably connected to the first mounting plate 711 and the second mounting plate 712 through an axis. The second rotary drive device 72 is mounted on the first mounting plate 711 or the second mounting plate 712, and its driving end extends into the center between the first mounting plate 711 or the second mounting plate 712, and is transmission-connected to the driving gear 74. The support frame 71 has a compact structure, and the assembly of the driving gear 74 and the passive gear 75 is compact and stable.

[0049] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A coaxial multi-bolt fastening system, characterized in that: The invention comprises a frame body (1), a plurality of floating frame assemblies (2), a plurality of axial rotation drive members (3), a rotation drive assembly and a radial adjustment assembly. The frame body (1) has a vertically arranged mounting plate (4). The plurality of floating frame assemblies (2) are all mounted on one side of the mounting plate (4) and are distributed on the same circumference. The radial adjustment assembly is mounted on the mounting plate (4) and connected to the plurality of floating frame assemblies (2) for synchronously driving the plurality of floating frame assemblies (2) to synchronously move outward or inward along the radial direction. The plurality of axial rotation drive members (3) are respectively and correspondingly mounted on the plurality of floating frame assemblies (2). The same end of the plurality of axial rotation drive members (3) is respectively connected to a wind batch sleeve. The rotation drive assembly is respectively connected to the plurality of axial rotation drive members (3) in transmission connection for driving the plurality of axial rotation drive members (3) to drive the corresponding wind batch sleeves to rotate synchronously in the same direction.

2. A coaxial multi-bolt fastening system according to claim 1, characterized in that: The frame (1) comprises two columns (11) and a base plate (12); the two columns (11) are respectively fixed vertically and at intervals to the upper end of the base plate (12); the two sides of the mounting plate (4) are respectively connected and fixed to the upper ends of the two columns (11); and the columns (11) are telescopic columns.

3. A coaxial multi-bolt fastening system according to claim 2, characterized in that: It also includes a mobile carrier (5), on which a track is provided which is parallel to the rotation center line of the shaft rotation driving member (3), the base plate (12) is mounted on the track and can slide along the track, and one side of the base plate (12) is provided with a driving member which drives it to move along the track.

4. A coaxial multi-bolt fastening system according to claim 1, characterized in that: The floating frame assembly (2) comprises a fixed plate (21), a movable plate (22) and two guide rods (23), wherein the fixed plate (21) is fixed to an outer edge of one side of the mounting plate (4), the movable plate (22) is arranged parallel to a side of the fixed plate (21) close to the center of the mounting plate (4), the two guide rods (23) are arranged parallel to each other and spaced apart, and one end of each of the two guide rods (23) is respectively connected and fixed vertically to the movable plate (22), and the other ends of the two guide rods (23) respectively penetrate the fixed plate (21), and the two guide rods (23) are arranged parallel to each other and spaced apart from each other. 3) are provided with a limit plate at the other end, an elastic member (24) is connected between the fixed plate (21) and the movable plate (22), a strip-shaped connecting rod (25) extending radially along the circumference is provided in the middle of the movable plate (22), and strip holes (41) corresponding to the connecting rods (25) are provided on the mounting plate (4), the shaft rotation driving member (3) is installed on the connecting rod (25) and passes through the strip hole (41), and the radial adjustment assembly is connected with the connecting rods (25) of multiple groups of the floating frame assemblies (2).

5. A coaxial multi-bolt fastening system according to claim 4, characterized in that: The radial adjustment assembly comprises a first rotation drive device (61) and a graduation positioning disk (62). The graduation positioning disk (62) is rotatably mounted at the center of one side of the mounting disk (4) and is coaxially distributed with the plurality of groups of shaft rotation drive members (3). The first rotation drive device (61) is mounted at the center of the other side of the mounting disk (4) and is connected to the rotation center of the graduation positioning disk (62). The outer edge of the graduation positioning disk (62) is provided with a plurality of limit plates (621) corresponding to the plurality of groups of connecting rods (25) along its circumferential direction. , a plurality of the limiting plates (621) are configured as a straight section on the same side along the circumferential direction, and as an arc section on the other side, and a plurality of continuously distributed arc grooves are provided on the arc section, the end of the connecting rod (25) contacts the outer edge of the indexing positioning disk (62), the first rotation drive device (61) is used to drive the indexing positioning disk (62) to rotate, and during the rotation process, the end of the connecting rod (25) slides one by one along the edges of the plurality of limiting plates (621), thereby realizing that the floating frame assembly (2) drives the shaft rotation drive member (3) to move radially.

6. A coaxial multi-bolt fastening system according to claim 4, characterized in that: The elastic member (24) is a spring and is sleeved on the guide rod (23).

7. A coaxial multi-bolt fastening system according to any one of claims 1 to 6, characterized in that: The shaft rotation driving member (3) comprises an electric air blower structure.

8. A coaxial multi-bolt fastening system according to claim 7, characterized in that: The rotary drive assembly comprises a support frame (71), a second rotary drive device (72), a gear transmission assembly and a plurality of telescopic universal joint transmission shafts (73). The support frame (71) is mounted on the other side of the mounting plate (4). The second rotary drive device (72) is mounted on the support frame (71) and is in transmission connection with the gear transmission assembly. One end of the plurality of telescopic universal joint transmission shafts (73) is respectively and one-to-one connected to the other end of the plurality of groups of shaft rotary drive members (3). The other ends of the plurality of telescopic universal joint transmission shafts (73) are respectively connected to the gear transmission assembly. The second rotary drive device (72) is used to drive the gear transmission assembly to operate, thereby driving the plurality of groups of shaft rotary drive members (3) to operate through the plurality of telescopic universal joint transmission shafts (73), thereby realizing synchronous and unidirectional rotation of the plurality of air-brush sleeves.

9. A coaxial multi-bolt fastening system according to claim 8, characterized in that: The gear transmission assembly comprises a driving gear (74) and a plurality of passive gears (75); the driving gear (74) is in driving connection with the second rotary drive device (72); the plurality of passive gears (75) are respectively assembled on the support frame (71) through shaft rotation and are distributed around the driving gear (74); the driving gear (74) is meshed with the passive gear (75); and the other ends of the plurality of telescopic universal transmission shafts (73) are respectively connected to the shafts of the plurality of passive gears (75) in a one-to-one correspondence.

10. A coaxial multi-bolt fastening system according to claim 9, characterized in that: The support frame (71) comprises a first mounting plate (711) and a second mounting plate (712) which are parallel to each other. The first mounting plate (711) and the second mounting plate (712) are arranged in parallel on the other side of the mounting plate (4). The edges of the first mounting plate (711) and the second mounting plate (712) are commonly connected with an oblique support rod which is connected and fixed to the mounting plate (4). The driving gear (74) and the driven gear (75) are respectively arranged between the first mounting plate (711) and the second mounting plate (712). The driven gear (75) is rotatably connected to the first mounting plate (711) and the second mounting plate (712) through a shaft. The second rotary drive device (72) is mounted on the first mounting plate (711) or the second mounting plate (712). The driving end of the second rotary drive device (72) extends into the center between the first mounting plate (711) or the second mounting plate (712) and is drivingly connected to the driving gear (74).

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