Online automatic pre-assembling machine for intermediate shaft of transmission shaft

Abstract

An on-line automatic pre-assembling machine for a transmission shaft intermediate shaft in the field of cars comprises double guide rails vertically arranged on a machine frame, a sensor A and a correlation sensor A are arranged on the machine frame on one side of the double guide rails, a sensor B and a correlation sensor B are arranged on the machine frame on the other side of the double guide rails, and a rubber positioning block is arranged on the machine frame in the middle of the double guide rails. A first press-fitting mechanism, a shaft locking mechanism and a second press-fitting mechanism are arranged in the frame, the first press-fitting mechanism is arranged above the shaft locking mechanism, the first press-fitting mechanism comprises a sliding plate A, the first press-fitting mechanism is connected to the double guide rails in a sliding mode through the sliding plate A, the second press-fitting mechanism is arranged below the shaft locking mechanism, and the second press-fitting mechanism comprises a sliding plate B; the second press-fitting mechanism is slidably connected to the double guide rails through a sliding plate B. The shaft locking mechanism comprises a sliding plate C. The shaft locking mechanism is slidably connected to the double guide rails through the sliding plate C. By means of the technology, online automatic assembling can be conducted on the rubber cover and the intermediate shaft, the assembling efficiency is high, and the assembling result is reliable.

Description

Technical Field

[0001] The utility model relates to automatic assembly equipment for a transmission shaft in a car production line, in particular to an online automatic pre-assembly machine for a transmission shaft and an intermediate shaft. Background Art

[0002] The drive shaft of a car's constant velocity universal joint consists of a fixed end joint, an intermediate shaft, and a movable end joint. The fixed end joint is directly connected to the car's wheel hub, while the movable end joint is directly connected to the engine's differential. The engine's power is transmitted to the wheel through the differential, movable end joint, intermediate shaft, fixed end joint, and wheel hub, thereby driving the wheel's rotation. During the drive shaft assembly process, shaft pre-installation is very important, especially the relative position of the rubber covers at both ends of the shaft (with a clamp at the small end of the rubber cover) and the intermediate shaft, which will directly affect the performance of the drive shaft. If the assembly is not in place, it will cause abnormal noise from the drive shaft and rapid wear of the rubber covers in a short period of time, causing grease leakage, which will reduce the performance of the drive shaft, cause functional failure, and lead to user dissatisfaction and the risk of recall. In the past, the assembly position of the rubber cover's convex ring and the intermediate shaft's concave ring groove was manually placed on the intermediate shaft and pushed firmly into place (correct assembly was achieved only when one shaft concave ring groove was exposed). This assembly method was not only labor-intensive and inefficient, but also, due to human factors, could cause the rubber cover and intermediate shaft to be improperly assembled. After assembly, if this was discovered during inspection, the finished product would need to be disassembled, resulting in the scrapping of related parts and affecting delivery schedules. If a driveshaft with the rubber cover and intermediate shaft incorrectly assembled is shipped to the user, it will experience performance degradation and functional failure within a short period of use. It can even cause abnormal noises and production line stoppages during on-site assembly at the OEM, leading to returns, claims, and vehicle recalls from the OEM, resulting in significant losses for the company. Therefore, a machine that can reliably and efficiently assemble the rubber cover and intermediate shaft at the assembly site is urgently needed. Summary of the Invention

[0003] The purpose of the utility model is to provide an online automatic pre-assembly machine for a transmission shaft intermediate shaft. By using this technology, the rubber cover and the intermediate shaft can be automatically assembled online, which not only has high assembly efficiency but also reliable assembly results.

[0004] The technical solution of the present utility model is: an online automatic pre-assembly machine for a transmission shaft intermediate shaft, characterized in that: it includes a frame, a rack installed in the frame, a vertically arranged double guide rail is fixedly installed on the rack, a sensor A and a corresponding sensor A are fixedly installed on the rack on one side of the double guide rail, a sensor B and a corresponding sensor B are fixedly installed on the rack on the other side of the double guide rail, a rubber positioning block is fixedly installed on the rack in the middle of the double guide rail, a first pressing mechanism, a shaft locking mechanism, and a second pressing mechanism are installed in the frame, the first pressing mechanism is placed above the shaft locking mechanism, the first pressing mechanism includes a slide A, the first pressing mechanism is slidably connected to the double guide rail through the slide A, the second pressing mechanism is placed below the shaft locking mechanism, the second pressing mechanism includes a slide B, the second pressing mechanism is slidably connected to the double guide rail through the slide B, the shaft locking mechanism includes a slide C, and the shaft locking mechanism is slidably connected to the double guide rail through the slide C.

[0005] The described locking shaft mechanism is fixedly equipped with a locking shaft clamp on the skateboard C, and the locking shaft clamp is provided with a groove, and the locking shaft clamp is fixedly equipped with a rotating shaft passing through the groove, and the rotating shaft in the groove is equipped with a locking shaft block that is rotatably connected, and the locking shaft clamp is fixedly equipped with a cylinder B, and the telescopic rod B of the cylinder B is slidably connected in the hole of the locking shaft clamp, and the end face of the telescopic rod B is opposite to the locking shaft block; the first pressing mechanism also includes a horizontal plate A, a servo motor A, an induction head A, a screw A, a bearing seat A, a bearing seat B, a cylinder A, a telescopic rod A, a fixed seat A, a fixed seat C, a limiting sleeve A, a guide column A, a horizontal slider A, a spring A, a fixed block A, a tapered sleeve A, a gasket A, a cylinder A, a push rod A, a push rod cap A, a push rod head A, a spring C, and a coupling A. The described horizontal plate A is fixedly connected to the frame, and the fixed end of the servo motor A is fixedly mounted on the horizontal plate A, and the rotating end of the servo motor A is connected to the frame through the coupling. A is fixedly connected to the screw A, which is rotatably connected to the bearing seat A and the bearing seat B. The screw A is screwed onto the skateboard A. The fixed end of the cylinder A is fixedly connected to the skateboard A. The movable end of the cylinder A is the telescopic rod A. The fixed seat A and the fixed seat C are fixedly connected to the skateboard A. The limit sleeve A is fixedly mounted on the fixed seat C. The guide column A is respectively fixedly connected to the fixed seat A and the fixed seat C. The transverse slider A is slidably connected to the guide column A. A spring A is mounted on the guide column A between the transverse slider A and the fixed seat A. The fixed block A is fixedly mounted on the skateboard A. A conical sleeve A is fixedly mounted below the fixed block A. A pad sleeve A is fixedly mounted below the transverse slider A. A tube A is fixedly mounted on the transverse slider A. The push rod A is placed in the transverse slider A, the pad sleeve A, the fixed block A and the tapered sleeve A, and is slidably connected to the above-mentioned components. A push rod cap A is provided on the upper part of the push rod A and a push rod head A is provided on the lower part. The spring C is placed in the tube A and is located on the push rod cap A. The induction head A is fixed on the slide A; the second pressing mechanism also includes a transverse plate B, a servo motor B, a coupling B, a screw B, a bearing seat C, a bearing seat D, a fixed seat B, a fixed seat D, a limit sleeve B, a guide column B, a transverse slider B, a spring B, a fixed block B, a tapered sleeve B, a gasket B, a cylinder B, a push rod B, a push rod cap B, a push rod head B, a spring D, and a induction head B. The transverse plate B is fixedly connected to the frame, and the fixed end of the servo motor B is fixedly mounted on the transverse plate B. The rotating end of the servo motor B is fixedly connected to the screw B through the coupling B. The screw B is rotatably connected to the bearing seat C, the bearing seat D, and the screw B is screwed to the slide B. The fixed seat B and the fixed seat D are fixedly connected to the slide B. The limit sleeve B is fixedly mounted on the fixed seat B. The guide post B is fixedly connected to the fixed seat B and the fixed seat D respectively. The horizontal slider B is slidably connected to the guide post B. The guide post B between the horizontal slider B and the fixed seat D is sheathed with a spring B. The fixed block B is fixedly mounted on the slide B. The fixed block B is fixedly connected to the fixed block B. The cushion sleeve B is fixedly mounted on the horizontal slider B. The tube B is fixedly connected to the bottom of the horizontal slider B. The ejector rod B is placed within the horizontal slider B, cushion sleeve B, fixed block B, and tapered sleeve B and is slidably connected to the aforementioned components. The ejector rod B is provided with an ejector cap B at its lower portion and an ejector head B at its upper portion. The spring C is placed in the tube B and located below the ejector cap B. The sensor head B is fixedly mounted on the slide B.

[0006] An electric control cabinet is provided outside the frame, and a controller is installed in the electric control cabinet. A touch screen, safety grating A, safety grating B, and an audible and visual alarm electrically connected to the controller are fixed on the frame, and a start button and an emergency stop switch are provided on the touch screen.

[0007] The principle of the utility model is as follows: the intermediate shaft is radially positioned by means of a shaft locking fixture, a cylinder B for locking the shaft, and a rubber positioning block; the intermediate shaft is axially elastically positioned by means of the shaft conical surface, a push rod, and a spring of the intermediate shaft; a servo motor drives a tapered sleeve to push the rubber cover push surface to a set position, and drives the rubber cover convex ring to enter the shaft groove ring of the intermediate shaft, thereby efficiently completing the intermediate shaft pre-installation, which not only ensures the pre-installation quality, but also improves the pre-installation efficiency, while reducing the labor intensity of the operator.

[0008] The advantages of this utility model are that it can guarantee 100% assembly quality during the pre-assembly of the intermediate shaft, improve pre-assembly efficiency, and reduce operator labor intensity. Conventionally, the assembly position of the rubber cover convex ring and the intermediate shaft concave ring was manually placed on the intermediate shaft and pushed into place (exposing the shaft concave ring for correct assembly). This assembly method is not only labor-intensive and inefficient, but also, due to human factors, can cause the rubber cover and intermediate shaft to be improperly assembled. After assembly, if the finished product is inspected and found to be improperly assembled, it must be disassembled, resulting in the scrapping of related parts, increasing costs and affecting delivery schedules. If a drive shaft is shipped to the user with the rubber cover and intermediate shaft improperly assembled, it will experience performance degradation and functional failure within a short period of use. Even during on-site assembly at the main engine factory, abnormal noise may occur, causing production line shutdowns, leading to returns, claims, and vehicle recalls from the main engine factory, resulting in significant losses for the company. The utility model solves these problems, achieving online automatic pre-assembly and 100% guaranteed reliability of intermediate shaft pre-assembly. It ensures product quality, improves pre-installation efficiency, reduces operator labor intensity, reduces costs, increases customer satisfaction, and enhances the company's core competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the pre-installed machine of the utility model.

[0010] Figure 2 yes Figure 1 Enlarged view of part I in the middle.

[0011] Figure 3 yes Figure 1 Enlarged view of part II.

[0012] Figure 4 yes Figure 1 Enlarged view of part III.

[0013] Figure 5 yes Figure 1 Top view of the center lock shaft mechanism.

[0014] Figure 6 yes Figure 5 Middle AA section view.

[0015] Figure 7 It is a schematic diagram of the structure of the pre-installed front axle groove ring and rubber cover convex ring.

[0016] Figure 8 It is a structural diagram of the pre-installed rear axle.

[0017] In the figure: 1 servo motor B, 2 frame, 3 cross plate B, 4 lead screw B, 5 bearing seat D, 6 slide plate B, 7 guide column B, 8 spring B, 9 bushing B, 10 fixing block B, 11 electric control cabinet, 12 intermediate shaft, 13 shaft diameter B, 14 shaft taper B, 15 telescopic rod B, 16 cylinder B, 17 slide plate C, 18 safety grating A, 19 shaft taper A, 20 through-beam sensor A, 21 emergency stop switch, 22 start button, 23 touch screen, 24 Bearing seat A, 25 Fixed seat C, 26 Sensor A, 27 Limit sleeve A, 28 Bushing A, 29 Horizontal slide A, 30 Guide column A, 31 Sensor head A, 32 Telescopic rod A, 33 Spring A, 34 Slide plate A, 35 Cylinder A, 36 Fixed seat A, 37 Double guide rail, 38 Screw A, 39 Bearing seat B, 40 Horizontal plate A, 41 Servo motor A, 42 Sound and light alarm, 43 Coupling A, 44 Frame, 45 Cylinder A, 46 Spring Spring C, 47 ejector cap A, 48 ejector A, 49 fixed block A, 50 tapered sleeve A, 51 ejector head A, 52 rubber cover A, 53 clamp A, 54 safety grating B, 55 shaft diameter A, 56 rubber positioning block, 57 rotating shaft, 58 slot, 59 lock shaft block, 60 lock shaft clamp body, 61 through-beam sensor B, 62 ejector head B, 63 tapered sleeve B, 64 bearing seat C, 65 sensor B, 66 fixed seat B, 67 limit sleeve B, 68 horizontal Slider B, 69 push rod B, 70 sensor head B, 71 cylinder B, 72 push rod cap B, 73 spring D, 74 fixed seat D, 75 coupling B, 76 rubber cover convex ring A, 77 shaft groove ring A, 78 rubber cover push surface A, 79 rubber cover small end face A, 80 rubber cover convex ring B, 81 clamp B, 82 rubber cover large end face A, 83 shaft groove ring B, 84 rubber cover small end face B, 85 rubber cover push surface B, 86 rubber cover B, 87 rubber cover large end face B. DETAILED DESCRIPTION

[0018] The online automatic pre-assembly machine for the intermediate shaft of the transmission shaft includes a frame 44 and a frame 2 installed in the frame. The frame is fixed with a vertically arranged double guide rail 37. The frame on one side of the double guide rail 37 is fixed with a sensor A26 and a corresponding sensor A20. The frame on the other side of the double guide rail 37 is fixed with a sensor B65 and a corresponding sensor B61. The frame in the middle of the double guide rail 37 is fixed with a rubber positioning block 56. The frame 44 is equipped with a first pressing mechanism, a shaft locking mechanism, and a second pressing mechanism. The first pressing mechanism is placed above the shaft locking mechanism. The first pressing mechanism includes a slide A34. The first pressing mechanism is slidably connected to the double guide rail 37 through the slide A34. The second pressing mechanism is placed below the shaft locking mechanism. The second pressing mechanism includes a slide B6. The second pressing mechanism is slidably connected to the double guide rail 37 through the slide B6. The shaft locking mechanism includes a slide C17. The shaft locking mechanism is slidably connected to the double guide rail 37 through the slide C.

[0019] A locking shaft clamp body 60 is fixedly mounted on the slide C17 of the locking shaft mechanism. The locking shaft clamp body is provided with a groove 58. A rotating shaft 57 passing through the groove is fixedly mounted on the locking shaft clamp body. A locking shaft block 59 is rotatably mounted on the rotating shaft 57 in the groove 58. A cylinder B16 is fixedly mounted on the locking shaft clamp body. The telescopic rod B15 of the cylinder B16 is slidably connected in the hole of the locking shaft clamp body. The end face of the telescopic rod B is opposite to the locking shaft block 59.

[0020] The first pressing mechanism also includes a transverse plate A40, a servo motor A41, an induction head A31, a screw A38, a bearing seat A24, a bearing seat B39, a cylinder A35, a telescopic rod A32, a fixed seat A36, a fixed seat C25, a limit sleeve A27, a guide column A30, a transverse slider A29, a spring A33, a fixed block A49, a tapered sleeve A50, a gasket A28, a cylinder A45, a push rod A48, a push rod cap A47, a push rod head A51, a spring C46, ​​and a coupling A43. The transverse plate A40 is fixedly connected to the frame 2, the fixed end of the servo motor A41 is fixedly mounted on the transverse plate A, the rotating end of the servo motor A is fixedly connected to the screw A38 through the coupling A, the screw A is rotatably connected to the bearing seat A24 and the bearing seat B39, the screw A38 is screwed on the slide A34, and the cylinder A35 is fixedly connected to the slide A34. The fixed end is fixedly connected to the slide A. The movable end of the cylinder A is a telescopic rod A32. The fixed seat A36 and the fixed seat C25 are fixedly connected to the slide A. The limit sleeve A27 is fixedly mounted on the fixed seat C. The guide post A30 is fixedly connected to the fixed seat A and the fixed seat C respectively. The transverse slider A29 is slidably connected to the guide post A. A spring A33 is mounted on the guide post A between the transverse slider A29 and the fixed seat A. The fixed block A49 is fixedly mounted on the slide A. The bottom of the fixed block A is fixedly mounted with a conical sleeve A50. The bottom of the transverse slider A is fixedly mounted with a cushion sleeve A28. The top of the transverse slider A is fixedly mounted with a cylinder A45. The ejector rod A48 is placed in the transverse slider A, the cushion sleeve A, the fixed block A, and the conical sleeve A, and is slidably connected to the above components. The top of the ejector rod A is provided with an ejector rod cap A47 and the bottom with an ejector rod head A51. The spring C46 is placed in the cylinder A and is located on the ejector rod cap A. The induction head A31 is fixedly mounted on the slide A.

[0021] The second pressing mechanism also includes a transverse plate B3, a servo motor B1, a coupling B, a screw B4, a bearing seat C64, a bearing seat D5, a fixed seat B66, a fixed seat D74, a limit sleeve B67, a guide column B7, a transverse slider B68, a spring B8, a fixed block B10, a tapered sleeve B63, a cushion sleeve B9, a cylinder B71, a push rod B69, a push rod cap B72, a push rod head B62, a spring D73, and a sensor head B70. The transverse plate B3 is fixedly connected to the frame 2, and the fixed end of the servo motor B1 is fixedly mounted on the transverse plate B. The rotating end of the servo motor B is fixedly connected to the screw B4 through the coupling B. The screw B is rotatably connected to the bearing seat C64, the bearing seat D5, and the screw B is screwed on the slide B6. Fixed seat B66 and fixed seat D74 are fixedly connected to slide B6. The aforementioned limit sleeve B67 is fixedly mounted on fixed seat B. Guide post B7 is fixedly connected to fixed seat B and fixed seat D, respectively. Horizontal slider B is slidably connected to guide post B. Spring B8 is mounted on guide post B between horizontal slider B and fixed seat D. Fixed block B10 is fixedly mounted on slide B6. Fixed block B is fixedly connected to tapered sleeve B63. Horizontal slider B is fixedly mounted with cushion sleeve B9. A cylinder B71 is fixedly mounted below horizontal slider B. Ejector rod B69 is placed within horizontal slider B, cushion sleeve B, fixed block B, and tapered sleeve B, and is slidably connected to these components. Ejector rod B is equipped with an ejector cap B72 at its lower portion and an ejector head B62 at its upper portion. Spring C46 is placed within cylinder B and located below ejector cap B. Sensor head B70 is fixedly mounted on slide B6.

[0022] An electric control cabinet 11 is provided outside the frame 44, and a controller is installed in the electric control cabinet. A touch screen 23, a safety grating A18, a safety grating B54, and an audible and visual alarm 42, which are electrically connected to the controller, are fixed on the frame 44. A start button 22 and an emergency stop switch 21 are provided on the touch screen.

[0023] The working process of the present utility model is as follows: press the start button, and the rubber cover A52 pre-installed with the clamp A53 is sleeved on the upper end of the intermediate shaft 12, with the large end face A82 of the rubber cover facing upward, and the small end face A79 of the rubber cover located between the shaft diameter A55 and the shaft cone surface A19, and the rubber cover B86 is sleeved on the push rod head B62, with the large end face B87 of the rubber cover facing downward, and the shaft diameter B13 of the intermediate shaft 12 is placed in the shaft lock block 59 and pushed forward, the shaft lock blocks are merged, and the intermediate shaft is leaned against the rubber positioning block 56. When the through-beam sensor A26 detects a workpiece, the telescopic rod A32 of the cylinder A35 is leaned against the shaft lock block 59, and the shaft lock block will not open. Since the diameter of the shaft cone surface B14 is larger than the aperture between the shaft lock blocks, the axial direction of the intermediate shaft 12 is positioned, and the rubber positioning block 56 assists in radial positioning of the intermediate shaft.When the servo motor A41 drives the slide plate A34 to move downward, the push rod head A51 first contacts the upper end of the intermediate shaft, and the push rod head A and the upper end of the intermediate shaft enter and pass through the tapered sleeve A50 and the fixed block A49. The elastic force of the spring C46 presses the push rod head A51 against the upper end of the intermediate shaft. As the slide plate A34 continues to move, the spring A33 retracts and exerts elastic force on the upper end of the intermediate shaft 12 through the horizontal slider A29, cylinder A45, spring C46, ​​push rod cap A47, push rod A48, and push rod head A51, so that the cone surface B14 of the intermediate shaft is pressed against the lock block 59, and there is no axial movement (elastic force is used here). The purpose of tightening is to prevent the locking block from damaging the surface of the intermediate shaft). At the same time, the telescopic rod A32 of the cylinder A35 extends out and presses on the horizontal slider A29, further increasing the axial pressure of the intermediate shaft. The lower end surface of the tapered sleeve A50 contacts the rubber cover push surface A78 and pushes the rubber cover A52 downward. When the sensor A26 detects the sensing head A31, the slide A34 stops moving, indicating that the slide A reaches the set position, that is, the lower end surface of the tapered sleeve A50 pushes the rubber cover A52 to the required assembly position. At this time, the rubber cover convex ring A76 enters the shaft groove ring A77 and is in the correct position, and the slide A34 remains fixed. When the through-beam sensor B61 detects a workpiece, the servo motor B1 drives the slide B6 to move upward, and the push rod head B62 first contacts the lower end of the intermediate shaft 12. The push rod head B and the lower end of the intermediate shaft enter and pass through the tapered sleeve B63 and the fixed block B10. The elastic force of the spring D73 presses the push rod head B62 against the lower end of the intermediate shaft. As the slide B6 continues to move, the spring B8 retracts and exerts elastic force on the lower end of the intermediate shaft through the horizontal slider B68, cylinder B71, spring D73, push rod cap B72, push rod B69, and push rod head B62, so that the intermediate shaft has no axial movement, and the upper end of the tapered sleeve B63 is pressed against the lower end of the intermediate shaft. The end face contacts the rubber cover push surface B85 and pushes the rubber cover B86 upward. When the sensor B65 detects the sensing head B70, the slide B6 stops moving, indicating that the slide B6 reaches the set position. That is, the upper end face of the tapered sleeve B63 pushes the rubber cover B86 to the required assembly position. At this time, the rubber cover convex ring B80 enters the shaft groove ring B83 and is in the correct position. The servo motor A41 and the servo motor B1 respectively drive the slide A and the slide B6 back to their original positions. The telescopic rod A32 of the cylinder A35 and the telescopic rod B15 of the cylinder B16 return to their original positions, remove the pre-installed shaft, and enter the next shaft pre-installation cycle.

[0024] The cylinder described in this article is a mechanical product of the prior art. The cylinder generally has a cylinder body as a fixed end, which is fixedly mounted on a corresponding component. The cylinder also has a telescopic end as a moving end, which is also called a telescopic rod. The telescopic end reciprocates along its axial direction within the designed stroke. The telescopic cylinder is mainly divided into pneumatic telescopic cylinders, electric telescopic cylinders, electromagnetic telescopic cylinders and hydraulic telescopic cylinders. In this application, pneumatic telescopic cylinders (cylinders) and electric telescopic cylinders are preferred; among them, pneumatic telescopic cylinders are prior art products that convert pressurized gas into mechanical action.

[0025] The servo motor is a product of the prior art. The servo motor is servo-controlled and can accurately control displacement and force.

[0026] The frame is used to support the components of each device at a designated position above the ground. In this application, the frame is equipped with a frame enclosure. The servo motor A, bracket, slide A, slide B, slide C, slide D, and servo motor B are located in the enclosure to protect the components. The enclosure is composed of translucent or opaque panels between the frames. On-site operators can observe the operating status of the equipment in real time through the touch screen of the controller.

[0027] In order to make the drawings clear, the pipelines, wires and standard parts in the drawings are omitted.

[0028] The controller's human-machine interface is preferably a touchscreen display, located on the surface of the electrical control cabinet or mounted on the frame, for easy operation by on-site personnel. The personnel can control the entire machine's operation using the touchscreen. An audible and visual alarm 42 is mounted on the frame or electrical control cabinet to emit specific sounds and lights to indicate the operating status of the online automatic pre-assembly machine for the drive shaft and intermediate shaft, to adjust various parameters, and to provide audible and visual alarms for any faults.

Claims

1. Online automatic pre-assembly machine for transmission shaft and intermediate shaft, characterized by: The invention comprises a frame (44), a frame (2) mounted in the frame, a vertically arranged double guide rail (37) fixed on the frame, a sensor A (26) and a beam sensor A (20) fixed on the frame on one side of the double guide rail (37), a sensor B (65) and a beam sensor B (61) fixed on the frame on the other side of the double guide rail (37), a rubber positioning block (56) fixed on the frame in the middle of the double guide rail (37), a first pressing mechanism, a locking mechanism, a second pressing mechanism The first pressing mechanism is placed above the shaft locking mechanism, the first pressing mechanism includes a slide A (34), and the first pressing mechanism is slidably connected to the double guide rail (37) through the slide A (34); the second pressing mechanism is placed below the shaft locking mechanism, the second pressing mechanism includes a slide B (6), and the second pressing mechanism is slidably connected to the double guide rail (37) through the slide B (6); the shaft locking mechanism includes a slide C (17), and the shaft locking mechanism is slidably connected to the double guide rail (37) through the slide C.

2. The online automatic pre-assembly machine for the transmission shaft and intermediate shaft according to claim 1, characterized in that: The slide C (17) of the locking shaft mechanism is fixed with a locking shaft clamp body (60), the locking shaft clamp body is provided with a groove (58), the locking shaft clamp body is fixed with a rotating shaft (57) passing through the groove (58), the rotating shaft (57) in the groove (58) is provided with a locking shaft block (59) connected in rotation, the locking shaft clamp body is fixed with a cylinder B (16), the telescopic rod B (15) of the cylinder B is slidably connected in the hole of the locking shaft clamp body, and the end face of the telescopic rod B is opposite to the locking shaft block (59); the first pressing mechanism also includes a horizontal plate A (40), a servo motor A (41), an induction head A (31), a screw A (38), a bearing seat A (24), a bearing seat B (39), a telescopic rod A (32), a fixed seat A (36), a fixed seat C (25), a limit sleeve A (27), a guide Column A (30), horizontal slider A (29), spring A (33), fixed block A (49), tapered sleeve A (50), washer sleeve A (28), cylinder A (45), push rod A (48), push rod cap A (47), push rod head A (51), spring C (46), coupling A (43), the horizontal plate A (40) is fixedly connected to the frame (2), the fixed end of the servo motor A (41) is fixedly mounted on the horizontal plate A, the rotating end of the servo motor A is fixedly connected to the screw A (38) through the coupling A, the screw A is rotatably connected to the bearing seat A (24) and the bearing seat B (39), the screw A is screwed on the slide A (34), the fixed end of the cylinder A (35) is fixedly connected to the slide A (34), and the movable end of the cylinder A (35) is the telescopic rod A (32). The fixed seat A (36) and the fixed seat C (25) are fixedly connected to the slide A (34), the limit sleeve A (27) is fixedly mounted on the fixed seat C, the guide column A (30) is fixedly connected to the fixed seat A and the fixed seat C (25), the horizontal slider A (29) is slidably connected to the guide column A, the guide column A between the horizontal slider A and the fixed seat A is sleeved with a spring A (33), the fixed block A (49) is fixedly mounted on the slide A (34), and a conical sleeve is fixedly mounted below the fixed block A (49). A (50), a cushion sleeve A (28) is fixedly mounted under the horizontal slider A, a cylinder A (45) is fixedly mounted on the horizontal slider A, a push rod A (48) is placed in the horizontal slider A, the cushion sleeve A, the fixed block A (49), and the conical sleeve A, and is slidably connected with the above components, a push rod cap A (47) is provided on the upper part of the push rod A, and a push rod head A (51) is provided on the lower part, a spring C (46) is placed in the cylinder A, located on the push rod cap A, and a sensor head A (31) is fixedly mounted on the slide A (34);The second pressing mechanism also includes a transverse plate B (3), a servo motor B (1), a coupling B (75), a screw B (4), a bearing seat D (5), a bearing seat C (64), a fixed seat B (66), a fixed seat D (74), a limit sleeve B (67), a guide column B (7), a transverse slider B (68), a spring B (8), a fixed block B (10), a tapered sleeve B (63), a cushion sleeve B (9), a cylinder B (71), a push rod B (69), a push rod cap B (72), a push rod head B (62), a spring D (73), and a sensor head B (70). The transverse plate B (3) is fixedly connected to the frame (2). The fixed end of the servo motor B (1) is fixedly mounted on the transverse plate B. The rotating end of the servo motor B is fixedly connected to the screw B (4) through the coupling B (75). The screw B (4) is rotatably connected to the bearing seat D (5) and the bearing seat C (64). The screw B is screwed to the slide plate. B (6), the fixed seat B (66) and the fixed seat D (74) are fixedly connected to the slide B (6), the limit sleeve B (67) is fixedly mounted on the fixed seat B, the guide column B (7) is fixedly connected to the fixed seat B and the fixed seat D respectively, the horizontal slider B is slidably connected to the guide column B, the guide column B between the horizontal slider B and the fixed seat D is sleeved with a spring B (8), the fixed block B (10) is fixedly mounted on the slide B (6), and the fixed block B is fixedly connected with a conical The sleeve B (63) is fixed on the horizontal slider B with a cushion sleeve B (9), and the bottom of the horizontal slider B is fixed with a tube B (71). The push rod B is placed in the horizontal slider B, the cushion sleeve B, the fixed block B, and the conical sleeve B, and is slidably connected with the above components. The lower part of the push rod B is provided with a push rod cap B (72), and the upper part is provided with a push rod head B (62). The spring C (46) is placed in the tube B and is located under the push rod cap B. The sensor head B (70) is fixed on the slide B (6).

3. The online automatic pre-assembly machine for the transmission shaft and intermediate shaft according to claim 1, characterized in that: An electric control cabinet (11) is provided outside the frame (44), a controller is installed in the electric control cabinet, a touch screen (23) electrically connected to the controller, a safety grating A (18), a safety grating B (54), and an audible and visual alarm (42) are fixedly installed on the frame (44), and a start button (22) and an emergency stop switch (21) are provided on the touch screen.

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