A high-speed transmission shaft hollow tube and fixed joint assembly tool

Abstract

The present invention relates to the technical field of transmission shaft component assembly, and discloses a high-speed transmission shaft hollow tube and fixed joint assembly tool, including a base and a press-fitting mechanism, wherein a plurality of support plate assemblies are symmetrically arranged on the top of the base with a transverse center; the press-fitting mechanism has a plurality of press-fitting seats and is respectively aligned with a plurality of symmetrical support plate assemblies, the press-fitting seats are used to place the fixed joint and apply pressure toward the support plate assembly; the support plate assembly and the top of the press-fitting seat are both provided with a V-shaped placement groove; a conveying mechanism is provided at the gap between the plurality of symmetrical support plate assemblies; the present invention realizes multi-station assembly of hollow tubes and fixed joints through a plurality of support plate assemblies and a plurality of press-fitting seats of the press-fitting mechanism, thereby greatly improving the work efficiency of the assembly process, and through the shape characteristics of the V-shaped placement groove of the support plate assembly and the press-fitting seat, a self-centering effect can be achieved on the assembled hollow tubes and fixed joints, thereby improving the assembly accuracy and preventing damage to parts.

Description

Technical Field

[0001] The invention relates to the technical field of transmission shaft component assembly, and more particularly to an assembly tool for a high-speed transmission shaft hollow tube and a fixed joint. Background Art

[0002] The drive shaft is a crucial component in transmitting power in a vehicle's drivetrain. Its function is to transfer the torque and speed output by the transmission (or transfer case) to the final drive unit on the drive axle, thereby driving the vehicle. The fixed joint (universal coupling) specifically refers to a component in a two-section drive shaft. A two-section drive shaft consists of two front and rear drive arms (hollow tubes) and a central universal joint (moving joint). The fixed joint (B) is the relatively fixed portion of the two-section drive shaft. It is typically mounted on one end of the drive arm and connected to the transmission or final drive unit on the drive axle via a flange or spline. The other end of the drive arm is connected to the other drive arm via a universal joint, forming a relatively rotatable connection. Production involves assembling the hollow tube and fixed joint, where the pin on the end of the hollow tube is press-fitted into the pin sleeve of the fixed joint.

[0003] Traditionally, the assembly process of the hollow tube and fixed joint of a drive shaft presents numerous challenges: Firstly, assembly efficiency between the hollow tube and fixed joint is low, resulting in high labor costs; secondly, the assembly process is prone to precision loss, resulting in positional deviations between the pin and the bushing, which can easily damage the parts. Therefore, developing an efficient and precise assembly tool is crucial for improving drive shaft manufacturing quality and production efficiency. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-speed transmission shaft hollow tube and fixed joint assembly tool to solve the problem of slow assembly speed and low precision of the hollow tube and fixed joint of the traditional transmission shaft in the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a high-speed transmission shaft hollow tube and fixed section assembly tool, comprising a base and a press-fitting mechanism, wherein a plurality of support plate assemblies are symmetrically arranged on the top of the base with respect to the transverse center, and two symmetrical support plate assemblies are used to place the hollow tube to remove the assembled hollow tube and fixed section;

[0006] The press-fitting mechanism has a plurality of press-fitting seats which are respectively aligned with a plurality of symmetrical support plate assemblies, and the press-fitting seats are used to place the fixing nodes and apply pressure to the fixing nodes toward the support plate assemblies;

[0007] The support plate assembly and the top of the press-fit seat are both provided with a V-shaped placement notch for centering the hollow tube and the fixed section to ensure assembly accuracy. The support plate assembly can remove the hollow tube and the fixed section from the V-shaped placement notch;

[0008] A conveying mechanism is provided at the gap between the symmetrical support plate assemblies to output the assembled hollow tubes and fixed sections from the top of the base, so that the tooling can automatically return the material after the assembly work is completed.

[0009] Furthermore, the support plate assembly includes a main support plate and a lifting mechanism. The top of the main support plate is set as an inclined surface, and there is an intermediate layer inside the main support plate. A top material plate assembly is arranged in the intermediate layer. The top of the top material plate assembly is set as an inclined surface, and the bottom of the top material plate assembly is fixedly connected to a lifting frame. Two positioning connecting blocks are provided on the front and back of the lifting frame, and two positioning slide grooves are provided on the front and back of the main support plate. The two positioning connecting blocks are docked with the lifting mechanism, and the lifting mechanism is used to control the lifting of the lifting frame.

[0010] Furthermore, the top material plate assembly includes two top material side plates, and the inner sides of the two top material side plates are fixedly connected to a middle column; the top material plate assembly also includes arm plate one and arm plate two, and the front sides of arm plate one and arm plate two are provided with strip-shaped through-grooves, and arm plate two is provided with an intermediate through-layer, and the bottom end of arm plate one passes through the intermediate through-layer of arm plate two, and the top ends of arm plate one and arm plate two are rotatably sleeved in the intermediate interlayer of the main support plate through a knob, and the top ends of arm plate one and arm plate two are located symmetrically on both sides of the V-shaped placement slot of the support plate assembly, and the middle column passes through the intersection of the strip-shaped through-grooves of arm plate one and arm plate two.

[0011] Furthermore, the pressing mechanism also includes a fixed side plate and several movable arms. One side of the fixed side plate is rotatably sleeved with several rotating shafts, and the other side of the fixed side plate is equipped with several motors. The output ends of several motors are respectively connected to the several rotating shafts, and one end of several rotating shafts is fixedly connected to a threaded rod. Several movable arms are respectively threadedly sleeved on one side wall of several threaded rods, and several pressing seats are respectively fixedly connected to the top of several movable arms. The fixed side plate is fixedly connected to the side wall of the base, and the top height of the fixed side plate is higher than the top height of the support plate assembly.

[0012] Furthermore, a plurality of T-shaped sliding grooves are provided at the bottom of the base, the movable arm is arranged in a T shape, and the plurality of movable arms are slidably sleeved in the plurality of T-shaped sliding grooves respectively.

[0013] Furthermore, two position sensors are provided on the top of each of the movable arms, and the two position sensors are used to detect the alignment status of the hollow tube and the fixed section.

[0014] Furthermore, a V-shaped support frame is fixedly connected in the V-shaped placement grooves of several of the press-fit seats.

[0015] Furthermore, when the arm plate 1 and the arm plate 2 are in a horizontal state, the top height thereof is lower than the top height of the top material side plate.

[0016] Furthermore, the lifting mechanism includes two threaded rods 2, a transmission rod 1, and a motor 2. Both ends of the two threaded rods 2 are rotatably sleeved with end blocks, and the end blocks are fixedly connected to the outer wall of the main support plate. The bottom ends of the two threaded rods 2 are respectively connected to the transmission rod 1 through two bevel gear transmission groups 2, and the output end of the motor 2 is connected to the transmission rod 1 through the bevel gear transmission group 1. The two positioning connection blocks are respectively threaded on the side walls of the two threaded rods 2.

[0017] Furthermore, the conveying mechanism includes several conveyor belts and motor three. Several of the conveyor belt driving wheels and driven wheels are connected through transmission rod two. The output end of motor three is connected to one end of transmission rod two. Several box slots are opened on the top of the base, and several of the conveyor belts are respectively arranged in the several box slots.

[0018] The technical effects and advantages of the present invention are as follows:

[0019] The present invention realizes multi-station assembly of hollow tubes and fixed joints through several support plate assemblies and several press-fitting seats of the press-fitting mechanism, thereby greatly improving the work efficiency of the assembly process. In addition, the V-shaped placement notches of the support plate assemblies and the press-fitting seats can achieve a self-centering effect on the assembled hollow tubes and fixed joints, thereby improving assembly accuracy and preventing damage to parts.

[0020] On the basis of the above, the support plate assembly structure is further improved. By setting up a ejector plate assembly and a lifting mechanism, the assembled hollow tube and fixed section can be ejected from the support plate assembly and the press-fitting seat. The conveying mechanism is used to complete the automatic material return process after the hollow tube and fixed section are assembled, replacing the manual material return method to further improve the assembly efficiency.

[0021] The structure of the ejector plate assembly is further improved. By setting arm plate 1 and arm plate 2 to cooperate with the jacking action of the ejector plate assembly, the opening and closing degree of the V-shaped placement slot of the support plate assembly can be adjusted, and then the height of the empty tube can be fine-tuned. When there is a vertical misalignment between the hollow tube and the fixed section, the assembly accuracy can be further improved through height adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is an exploded schematic diagram of the overall structure of the present invention;

[0024] Figure 3 For the present invention Figure 2 A side view of the press-fitting mechanism structure;

[0025] Figure 4 For the present invention Figure 3 Schematic diagram of the press-fit seat structure;

[0026] Figure 5 For the present invention Figure 2 Schematic diagram of the support plate assembly structure;

[0027] Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure of the main support plate in FIG;

[0028] Figure 7 For the present invention Figure 6 Schematic diagram of the motion state of arm plate 1 and arm plate 2;

[0029] Figure 8 For the present invention Figure 5 Schematic diagram of the lifting mechanism structure;

[0030] Figure 9 For the present invention Figure 2 Schematic diagram of the conveying mechanism structure;

[0031] Figure 10 This is a schematic diagram of the assembly of hollow tube and fixed section.

[0032] The accompanying drawings are marked as follows: a, hollow tube; a1, pin shaft; b, fixed section; b1, pin sleeve; 1, base; 2, support plate assembly; 3, press-fitting mechanism; 4, conveying mechanism; 5, position sensor; 31, moving arm; 32, fixed side plate; 33, rotating shaft; 34, motor one; 35, press-fitting seat; 36, threaded rod one; 35, press-fitting seat; 351, V-shaped support; 21, main support plate; 22, ejector plate assembly; 23, lifting frame; 24, positioning connecting block; 25, lifting mechanism; 221, ejector side plate; 222, center column; 223, arm plate one; 224, arm plate two; 251, threaded rod two; 252, transmission rod one; 253, motor two; 254, bevel gear transmission group one; 255, bevel gear transmission group two; 41, conveyor belt; 42, transmission rod two; 43, motor three. DETAILED DESCRIPTION

[0033] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] Reference Figures 1-4 The present invention provides a high-speed transmission shaft hollow tube and fixed section assembly tool, comprising a base 1 and a press-fitting mechanism 3. A plurality of support plate assemblies 2 are symmetrically arranged on the top of the base 1 with respect to the transverse center. The two symmetrical support plate assemblies 2 are used to place the hollow tube a and to remove the assembled hollow tube a and fixed section b.

[0035] The press-fitting mechanism 3 has a plurality of press-fitting seats 35 and is aligned with a plurality of symmetrical support plate assemblies 2 respectively. The press-fitting seats 35 are used to place the fixed nodes b and apply pressure to them toward the support plate assemblies 2;

[0036] The top of the support plate assembly 2 and the press-fit seat 35 are both provided with V-shaped placement notches;

[0037] A conveying mechanism 4 is provided at the gaps between the symmetrical support plate assemblies 2 .

[0038] During use, the hollow tube a is placed on the symmetrically arranged support plate assembly 2, and the fixed section b is placed on the press-fitting seat 35. Since the support plate assembly 2 and the top of the press-fitting seat 35 are provided with V-shaped placement grooves, the hollow tube a and the fixed section b can be centered, thereby ensuring the assembly accuracy. Since the symmetrically arranged support plate assembly 2 and the press-fitting seat 35 are provided with several, multi-station assembly can be achieved to improve work efficiency. After the assembly is completed, the hollow tube a and the fixed section b can be withdrawn from the V-shaped placement grooves of the support plate assembly 2 and the press-fitting seat 35 through the support plate assembly 2. The hollow tube a after withdrawal falls to the top of the conveying mechanism 4, and the assembled hollow tube a and the fixed section b are output from the top of the base 1 through the conveying mechanism 4, so that the tooling can automatically withdraw the material after the assembly work is completed, further improving efficiency.

[0039] Reference Figure 5 The support plate assembly 2 includes a main support plate 21 and a lifting mechanism 25. The top of the main support plate 21 is set as an inclined surface. There is an intermediate layer inside the main support plate 21, and a top material plate assembly 22 is arranged in the intermediate layer. The top of the top material plate assembly 22 is set as an inclined surface. The bottom of the top material plate assembly 22 is fixedly connected to a lifting frame 23. The front and back of the lifting frame 23 are both provided with two positioning connecting blocks 24. The front and back of the main support plate 21 are both provided with two positioning slides. The two positioning connecting blocks 24 are docked with the lifting mechanism 25. The lifting mechanism 25 is used to control the lifting and lowering of the lifting frame 23.

[0040] In the initial state, the ejector plate assembly 22 is located at the bottom of the V-shaped placement groove of the support plate assembly 2. When the material is unloaded through the support plate assembly 2, the lifting frame 23 is driven to be lifted by the lifting mechanism 25, and the lifting frame 23 drives the ejector plate assembly 22 to rise into the V-shaped placement groove to support the hollow tube a. When the top of the ejector plate assembly 22 is level with the top of the main support plate 21, the hollow tube a rolls and detaches from the top of the support plate assembly 2 under the influence of the inclined surface of the main support plate 21 and the top of the ejector plate assembly 22. Since the hollow tube a is connected to the fixed section b, the fixed section b is driven by the hollow tube a through the above action and detached from the V-shaped placement groove at the top of the press-fitting seat 35.

[0041] Reference Figure 5-Figure 7The top material plate assembly 22 includes two top material side plates 221, and the inner sides of the two top material side plates 221 are fixedly connected with a middle column 222; the top material plate assembly 22 also includes an arm plate 1 223 and an arm plate 224. The front sides of the arm plate 1 223 and the arm plate 2 224 are both provided with strip-type through-grooves, and the arm plate 2 224 is provided with an intermediate interpenetrating layer. The bottom end of the arm plate 1 223 passes through the intermediate interpenetrating layer of the arm plate 2 224, and the top ends of the arm plate 1 223 and the arm plate 2 224 are rotatably sleeved in the intermediate layer of the main support plate 21 through a knob, and the top ends of the arm plate 1 223 and the arm plate 2 224 are located symmetrically on both sides of the V-shaped placement notch of the support plate assembly 2, and the middle column 222 passes through the intersection of the strip-type through-grooves of the arm plate 1 223 and the arm plate 2 224.

[0042] The V-shaped placement notch shape characteristic of the support plate assembly 2 can play a centering effect on the hollow tube a. However, in production, there are inevitably slight size differences in the hollow tube a. When there is an error in the diameter of the hollow tube a, the V-shaped placement notch on the top of the support plate assembly 2 can only ensure that the hollow tube a is horizontally aligned with the fixed section b, while there is a slight vertical misalignment, which affects the assembly accuracy. Therefore, the arm plate 1 223 and the arm plate 2 224 are arranged to form a V-shaped arm according to their connection positions. When the ejector plate assembly 22 is lifted, the arm plate 1 223 and the arm plate 2 224 can be toggled (such as Figure 7 As shown: the opening and closing degree of the V-shaped arm formed by the arm plate 1 223 and the arm plate 2 224 is adjusted, that is, the opening and closing degree of the V-shaped placement groove of the support plate assembly 2 is adjusted, so that the vertical accuracy of the hollow tube a can be adjusted to further improve the assembly accuracy).

[0043] Reference Figure 3 The pressing mechanism 3 also includes a fixed side plate 32 and several movable arms 31. One side of the fixed side plate 32 is rotatably sleeved with several rotary shafts 33. The other side of the fixed side plate 32 is equipped with several motors 34. The output ends of the several motors 34 are respectively connected to the several rotary shafts 33. One end of the several rotary shafts 33 is fixedly connected with a threaded rod 36. The several movable arms 31 are respectively threadedly sleeved on the side walls of the several threaded rods 36. Several press-fitting seats 35 are respectively fixedly connected to the top of the several movable arms 31. The fixed side plate 32 is fixedly connected to the side wall of the base 1. The top height of the fixed side plate 32 is higher than the top height of the support plate assembly 2.

[0044] When the press-fitting mechanism 3 is running, the motor 34 provides power to drive the rotating shaft 33 to rotate, and the rotating shaft 33 drives the threaded rod 36 to rotate. Under the action of the threaded structure, the movable arm 31 is displaced, and then the press-fitting seat 35 is moved to apply pressure to the fixed section b. In addition, the height setting of the fixed side plate 32 can play a supporting role on the other end of the hollow tube a, thereby preventing the hollow tube a from axial displacement during the press-fitting process.

[0045] Reference Figure 3A plurality of T-shaped slots are provided at the bottom of the base 1 , the movable arms 31 are arranged in a T-shape, and the plurality of movable arms 31 are slidably sleeved in the plurality of T-shaped slots respectively.

[0046] This arrangement enables the base 1 to bear the weight of the movable arm 31, preventing the threaded rod 36 from being subjected to a large vertical pressure, and simultaneously positions the movable arm 31 to prevent the movable arm 31 from rotating with the threaded rod 36 and affecting the displacement effect.

[0047] Reference Figure 3 Two position sensors 5 are provided on the top of each of the movable arms 31. The two position sensors 5 are used to detect the alignment status of the hollow tube a and the fixed section b.

[0048] A position sensor 5 is used to detect the distance to the side wall of the pin shaft a1 of the hollow tube a, and another position sensor 5 is used to detect the distance to the side wall of the pin sleeve b1 of the fixed section b. The difference in distance detected by the two position sensors 5 and the wall thickness of the pin sleeve b1 are fixed values. When the difference in the distance values ​​detected by the two position sensors 5 does not meet the fixed value, it can be determined that the core tube a and the fixed section b are not aligned, thereby achieving the alignment status detection effect. By replacing the manual observation and judgment method in this way, the assembly accuracy can be further improved.

[0049] Reference Figure 4 A V-shaped support 351 is fixedly connected to the V-shaped placement grooves of the plurality of press-fit seats 35.

[0050] Since the fixed joint b is a universal coupling structure, its pin sleeve b1 can be movable. The V-shaped bracket 351 can be provided to center the pin sleeve b1, ensuring that the pin sleeve b1 can be aligned with the pin shaft a1 of the hollow tube a.

[0051] Reference Figure 7 When the arm plate 1 223 and the arm plate 2 224 are in a horizontal state, their top heights are lower than the top heights of the top material side plate 221 .

[0052] This prevents the hollow tube a from being pushed out of the V-shaped placement notch of the support plate assembly 2 by the ejector plate assembly 22, whereby the arm plate 1 223 and the arm plate 2 224 protrude from the top inclined surface of the ejector plate assembly 22, thereby affecting the rolling of the hollow tube a.

[0053] Reference Figure 8 The lifting mechanism 25 includes two threaded rods 251, a transmission rod 1 252, and a motor 253. Both ends of the two threaded rods 251 are rotatably sleeved with end blocks, and the end blocks are fixedly connected to the outer wall of the main support plate 21. The bottom ends of the two threaded rods 251 are respectively connected to the transmission rod 1 252 through two bevel gear transmission groups 255. The output end of the motor 253 is connected to the transmission rod 1 252 through the bevel gear transmission group 1 254. The two positioning connection blocks 24 are respectively threaded on the side walls of the two threaded rods 251.

[0054] The power output by the motor 253 rotates the transmission rod 1 252 under the transmission action of the bevel gear transmission group 1 254, and then the two threaded rods 251 rotate through the transmission action of the two bevel gear transmission groups 255. The positioning connecting block 24 is raised and lowered through the threaded structure, and then the lifting frame 23 is driven to be lifted.

[0055] Reference Figure 9 The conveying mechanism 4 includes several conveyor belts 41 and three motors 43. The driving wheels and driven wheels of the several conveyor belts 41 are connected through the transmission rod 2 42. The output end of the motor 3 43 is connected to one end of the transmission rod 2 42. Several box slots are opened on the top of the base 1, and several conveyor belts 41 are respectively arranged in the several box slots.

[0056] After the symmetrically arranged support plate assemblies 2 are unloaded, the hollow tube a is placed on top of the conveyor belts 41 , and the output of the motor 3 43 drives the transmission rod 2 42 to rotate, so that the conveyor belts 41 run simultaneously to transport the hollow tube a.

[0057] The basic principles, main features, and advantages of the present invention are shown and described above. The present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-speed transmission shaft hollow tube and fixed joint assembly tool, characterized by: It comprises a base (1) and a pressing mechanism (3); a plurality of support plate assemblies (2) are symmetrically arranged on the top of the base (1) with respect to the transverse center; two symmetrical support plate assemblies (2) are used to place the hollow tube (a) so as to remove the assembled hollow tube (a) and the fixed section (b); The press-fitting mechanism (3) has a plurality of press-fitting seats (35) which are respectively aligned with a plurality of symmetrical support plate assemblies (2), and the press-fitting seats (35) are used to place the fixing section (b) and apply pressure thereto toward the support plate assembly (2); The support plate assembly (2) and the press-fit seat (35) are both provided with V-shaped placement notches on the top for centering the hollow tube (a) and the fixed section (b) to ensure assembly accuracy. The support plate assembly (2) can remove the hollow tube (a) and the fixed section (b) from the V-shaped placement notches. The support plate assembly (2) comprises a main support plate (21) and a lifting mechanism (25); the top of the main support plate (21) is arranged as an inclined surface; an intermediate layer is provided inside the main support plate (21); and a top material plate assembly (22) is provided in the intermediate layer; The top of the ejector plate assembly (22) is set as an inclined surface, and the bottom of the ejector plate assembly (22) is fixedly connected to a lifting frame (23), and two positioning connection blocks (24) are provided on the front and back of the lifting frame (23), and two positioning slots are provided on the front and back of the main support plate (21), and the two positioning connection blocks (24) are docked with a lifting mechanism (25), and the lifting mechanism (25) is used to control the lifting of the ejector frame (23); The top material plate assembly (22) comprises two top material side plates (221), and the inner sides of the two top material side plates (221) are fixedly connected to a center column (222); The top material plate assembly (22) also includes an arm plate 1 (223) and an arm plate 2 (224), the front surfaces of the arm plate 1 (223) and the arm plate 2 (224) are both provided with a strip-shaped through-groove, the arm plate 2 (224) is provided with an intermediate through-groove, the bottom end of the arm plate 1 (223) passes through the intermediate through-groove of the arm plate 2 (224), the top ends of the arm plate 1 (223) and the arm plate 2 (224) are rotatably sleeved in the intermediate interlayer of the main support plate (21) through a knob, and the top ends of the arm plate 1 (223) and the arm plate 2 (224) are located symmetrically on both sides of the V-shaped placement notch of the support plate assembly (2), and the middle column (222) passes through the intersection of the strip-shaped through-grooves of the arm plate 1 (223) and the arm plate 2 (224); A conveying mechanism (4) is provided at the gap between the plurality of symmetrical support plate assemblies (2) to output the assembled hollow tube (a) and the fixed section (b) from the top of the base (1), so that the tooling can automatically return the material after the assembly work is completed.

2. The high-speed transmission shaft hollow tube and fixed joint assembly tool according to claim 1, characterized in that: The pressing mechanism (3) further comprises a fixed side plate (32) and a plurality of movable arms (31). One side of the fixed side plate (32) is rotatably sleeved with a plurality of rotary shafts (33). The other side of the fixed side plate (32) is provided with a plurality of motors (34). The output ends of the plurality of motors (34) are respectively connected to the plurality of rotary shafts (33). One end of the plurality of rotary shafts (33) is fixedly connected to a threaded rod (36). The plurality of movable arms (31) are respectively threadedly sleeved on the side walls of the plurality of threaded rods (36). The plurality of pressing seats (35) are respectively fixedly connected to the tops of the plurality of movable arms (31). The fixed side plate (32) is fixedly connected to the side wall of the base (1). The top height of the fixed side plate (32) is higher than the top height of the support plate assembly (2).

3. The high-speed transmission shaft hollow tube and fixed joint assembly tool according to claim 2, characterized in that: The bottom of the base (1) is provided with a plurality of T-shaped sliding grooves, the movable arm (31) is arranged in a T-shape, and the plurality of movable arms (31) are respectively slidably sleeved in the plurality of T-shaped sliding grooves.

4. The high-speed transmission shaft hollow tube and fixed joint assembly tool according to claim 2, characterized in that: Two position sensors (5) are provided on the top of each of the plurality of movable arms (31), and the two position sensors (5) are used to detect the alignment state of the hollow tube (a) and the fixed section (b).

5. The high-speed transmission shaft hollow tube and fixed joint assembly tool according to claim 1, characterized in that: A V-shaped support frame (351) is fixedly connected in the V-shaped placement notches of the plurality of press-fit seats (35).

6. The high-speed transmission shaft hollow tube and fixed joint assembly tool according to claim 1, characterized in that: When the arm plate 1 (223) and the arm plate 2 (224) are in a horizontal state, the top height thereof is lower than the top height of the top material side plate (221).

7. The high-speed transmission shaft hollow tube and fixed joint assembly tool according to claim 1, characterized in that: The lifting mechanism (25) includes two threaded rods (251), a transmission rod (252), and a motor (253). Both ends of the two threaded rods (251) are rotatably sleeved with end blocks, and the end blocks are fixedly connected to the outer wall of the main support plate (21). The bottom ends of the two threaded rods (251) are respectively connected to the transmission rod (252) through two bevel gear transmission groups (255). The output end of the motor (253) is connected to the transmission rod (252) through the bevel gear transmission group (254). The two positioning connection blocks (24) are respectively threadedly sleeved on the side walls of the two threaded rods (251).

8. The high-speed transmission shaft hollow tube and fixed joint assembly tool according to claim 1, characterized in that: The conveying mechanism (4) includes a plurality of conveyor belts (41) and a third motor (43). The driving wheels and the driven wheels of the plurality of conveyor belts (41) are connected to each other through a second transmission rod (42). The output end of the third motor (43) is connected to one end of the second transmission rod (42). The top of the base (1) is provided with a plurality of box slots, and the plurality of conveyor belts (41) are respectively arranged in the plurality of box slots.

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