Automobile part production testing device

Abstract

The invention belongs to the technical field of automobile transmission shaft testing, and discloses an automobile part production testing device, which comprises a supporting table, a power motor, a movable seat and two groups of fixed seats which are arranged on the supporting table, and a transmission shaft body which is arranged at the output end of the power motor and is rotationally connected to one fixed seat and the movable seat. According to the scheme, after the transmission shaft body is installed on the movable base and one of the fixed bases, the power motor is operated to drive the transmission shaft body to rotate and drive the aluminum disc to rotate synchronously, and when the transmission shaft body rotates at a high speed, torque opposite to the rotation direction is generated on the aluminum disc; the higher the rotation speed of the aluminum disc and the transmission shaft body is, the larger the resistance torque is, and different types of torque loading on the transmission shaft body can be achieved through the distance between the strong magnet and the aluminum disc. The problem that an existing device is difficult to simulate a complex and changeable stress environment borne by a transmission shaft on a vehicle is solved.

Description

Technical Field

[0001] This invention belongs to the field of automotive driveshaft testing technology, specifically an automotive parts production testing device. Background Technology

[0002] The driveshaft is a component in a car's transmission system that connects the gearbox and the drive axle. Its main function is to transmit the power generated by the engine to the wheels. During operation, the driveshaft is subjected to complex torque and vibration, which can cause bending and resulting in vehicle vibration. Therefore, the driveshaft must possess sufficient strength and durability, and thus, after production, it should undergo simulated testing using a testing device to obtain test data.

[0003] For example, the invention with publication number CN112393892A relates to the field of transmission shaft torque testing technology and discloses a transmission shaft torque testing device. This device fixes the transmission shaft body by placing it on the upper end of a connecting rod. Turning the knob screw rotates the transmission shaft body to one side, and the electric telescopic rod extends and retracts, causing the pressure plate to move up and down to fix the transmission shaft body. This allows for convenient fixing and movement of the transmission shaft body, making operation more convenient. Furthermore, by using the electric telescopic rod to move the pressure plate up and down to fix the transmission shaft body, the motor drives the transmission shaft body to rotate, causing the C-shaped plate to rotate, which in turn drives the transmission shaft body to rotate. This allows for convenient and quick torque testing, improving workers' work efficiency.

[0004] While the aforementioned methods can test the torque of the driveshaft itself, the equipment can only achieve a single type of discontinuous static or quasi-static torque loading, making it difficult to comprehensively simulate the complex and variable stress environment experienced by the driveshaft in a real vehicle. Therefore, based on the above problems, a production testing device for automotive parts is proposed. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides an automotive parts production testing device that solves the problem that existing devices struggle to simulate the complex and variable stress environment that drive shafts experience on vehicles.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automotive parts production testing device, comprising a support platform and a power motor, a moving seat, and two sets of fixed seats mounted thereon, and further comprising: a transmission shaft body mounted on the output end of the power motor, the transmission shaft body being rotatably connected to a fixed seat and a moving seat, the other end of the transmission shaft body being drivenly connected to a connecting shaft, and the other end of the connecting shaft being drivenly connected to an aluminum disc, and a blocking mechanism being installed on the top of the support platform; The blocking mechanism includes a support slide that is movably mounted on a support platform. A fixing member is fixedly installed on the upper part of the support slide. Several strong magnets are arranged in a ring array and fixedly installed inside the fixing member. A lead screw motor for driving the support slide to reciprocate in the horizontal direction is provided at the bottom of the support platform. A slider is symmetrically arranged at the bottom of the support slide. The slider can pass downward through the plate part of the support platform. When the support slide moves horizontally, it can drive a strong magnet closer to the aluminum disc.

[0007] Preferably, the connecting shaft is rotatably connected to another fixed seat.

[0008] Preferably, the connection between the aluminum disc and the connecting shaft is the shaft body on the aluminum disc; a cooling mechanism for cooling the aluminum disc is installed on the top of the support platform.

[0009] Preferably, the cooling mechanism includes a heat-conducting annular component one and a heat-conducting annular component two, which are respectively fixedly sleeved on the shaft body and the outer periphery of the aluminum disc. The outer periphery of the heat-conducting annular component one and the heat-conducting annular component two are respectively rotatably and sealingly connected to a sealing collar one and a sealing collar two. Each of the sealing collar one and the sealing collar two is provided with its own support foot, and the support foot is fixedly installed on the top of the support platform. A plurality of metal heat exchange pipes are arranged in a ring and fixedly connected on the heat-conducting annular component one, and the other end of the metal heat exchange pipes is fixedly connected to the heat-conducting annular component two. The top of the support platform is provided with a liquid circulation mechanism for pumping cooling water into the heat-conducting annular component one and extracting the cooling water from the heat-conducting annular component two for circulation.

[0010] Preferably, the aluminum disc has several grooves on the side facing the metal heat exchange pipeline, and the end of the metal heat exchange pipeline near the aluminum disc can be inserted into the grooves.

[0011] Preferably, the liquid circulation mechanism includes a cylindrical component fixedly installed on the support platform plate. A pump body is fixedly installed on the top of the support platform. The input end and output end of the pump body are respectively fixedly connected to pipe one and pipe two. One end of pipe one is fixedly connected to the bottom of the cylindrical component. The other end of pipe two can pass through a sealing ring one and is fixedly connected to a heat-conducting annular component one. A return pipe is fixedly connected to the middle of the cylindrical component. The other end of the return pipe can pass through and is fixedly connected to the heat-conducting annular component two. The cylindrical component contains circulating cooling water with the liquid level located at the lower part of the cylindrical component.

[0012] Preferably, the lower middle part of the moving seat is columnar, and its columnar part passes downward through the support platform and extends below it. In the initial state, the moving seat has an upward tendency due to the elastic force of its own spring part. The bottom part of the moving seat located below the support platform is the piston end, and the piston end is located in the upper middle part of the cylindrical component in the initial state. When the piston end is in the upper middle part of the cylindrical component, it can move up or down.

[0013] Preferably, the middle part of the cylindrical component is provided with a one-way liquid replenishment port that can replenish cooling water into the cavity of the cylindrical component in one direction.

[0014] Preferably, a pressure relief valve for discharging excess gas from the cylinder is also provided in the middle of the cylinder component.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The above solution involves mounting the drive shaft body on a moving base and one of the fixed bases, then driving the drive shaft body to rotate via a power motor, which in turn drives the connecting shaft, shaft body, and aluminum disc to rotate synchronously. When the drive shaft body rotates at high speed, a lead screw motor drives a support slide to move closer to the aluminum disc. Since the aluminum disc is a good conductor, electromagnetic induction occurs, generating eddy currents. These eddy currents in the aluminum disc are subjected to Ampere force in the magnetic field of the magnet. These forces generate a torque on the aluminum disc that is opposite to the direction of rotation, i.e., a resistance torque, thereby increasing the torque borne by the drive shaft body during rotation. The faster the rotation speed of the aluminum disc and the drive shaft body, the greater the resistance torque. By adjusting the distance of the strong magnet close to the aluminum disc, different types of torque loading can be applied to the drive shaft body, solving the problem that existing devices cannot simulate the complex and variable stress environment that the drive shaft bears on a vehicle. The above scheme involves the transmission shaft rotating at a constant speed. As the strong magnet approaches the aluminum disc, there is continuous relative motion between the aluminum disc and the strong magnet. Since the strong magnet has resistance, when eddy currents flow through the resistance, heat is generated due to the Joule effect. At this time, the pump body draws cooling water from the cylinder through pipe one and sends it through pipe two through heat-conducting ring one and metal heat exchange pipes into heat-conducting ring two to cool the aluminum disc. The cooling water in heat-conducting ring two will flow back into the cylinder through the return pipe for subsequent circulation. The above scheme utilizes the heat carried by the cooling water flowing back into the cylinder to cause some of the cooling water to turn into gas. At this time, the pressure inside the cylinder will increase, thereby pushing the moving seat and causing it to have an upward trend, and applying pressure to the shaft part of the drive shaft body, so as to achieve targeted simulation testing of the actual operating environment of the drive shaft body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the frontal planar structure of the present invention; Figure 3 This is a top view schematic diagram of the structure of the present invention; Figure 4 This is a schematic diagram of the mating structure of the power motor, transmission shaft body, connecting shaft and aluminum disc of the present invention; Figure 5 This is a schematic diagram of the blocking mechanism of the present invention; Figure 6 This is a schematic diagram of the liquid circulation mechanism of the present invention; Figure 7 This is a schematic diagram of the front cross-sectional structure of the aluminum disc of the present invention; Figure 8 for Figure 7 Enlarged view of point A in the middle; Figure 9 This is a schematic diagram of the front cross-sectional structure of a portion of the support platform and the cylindrical body of the present invention; Figure 10 for Figure 9 Enlarged view of point B in the middle.

[0017] In the diagram: 1. Support platform; 11. Fixed seat; 12. Moving seat; 13. Connecting shaft; 2. Power motor; 3. Transmission shaft body; 4. Aluminum disc; 41. Shaft body; 5. Restriction mechanism; 51. Support slide; 52. Fixing component; 53. Strong magnet; 54. Lead screw motor; 55. Slider; 6. Cooling mechanism; 61. Liquid circulation mechanism; 611. Cylinder component; 6111. One-way liquid replenishment port; 6112. Pressure relief valve; 612. Pipeline 1; 613. Pump body; 614. Pipeline 2; 615. Return pipe; 62. Thermally conductive annular component 1; 63. Sealing ring 1; 64. Thermally conductive annular component 2; 65. Sealing ring 2; 66. Metal heat exchange pipeline. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 10 As shown, the present invention provides an automotive parts production testing device, including a support platform 1 and a power motor 2, a moving seat 12 and two sets of fixed seats 11 mounted thereon. It also includes a transmission shaft body 3 mounted on the output end of the power motor 2. The transmission shaft body 3 is rotatably connected to a fixed seat 11 and a moving seat 12. The other end of the transmission shaft body 3 is connected to a connecting shaft 13, and the other end of the connecting shaft 13 is connected to an aluminum disc 4. A blocking mechanism 5 is also installed on the top of the support platform 1. The blocking mechanism 5 includes a support slide 51 movably mounted on the support platform 1. A fixing member 52 is fixedly mounted on the upper part of the support slide 51. Several strong magnets 53 are arranged in a ring array and fixedly mounted inside the fixing member 52. A lead screw motor 54 is provided at the bottom of the support platform 1 for driving the support slide 51 to reciprocate in the horizontal direction. A slider 55 is symmetrically arranged at the bottom of the support slide 51. The slider 55 can pass downward through the plate part of the support platform 1. When the support slide 51 moves in the horizontal direction, it can drive the strong magnets 53 to approach the aluminum disc 4. The connecting shaft 13 is rotatably connected to another fixed seat 11.

[0020] By adopting the above scheme, after the drive shaft body 3 is installed on the moving seat 12 and one of the fixed seats 11, the drive shaft body 3 is driven to rotate by the running power motor 2, which in turn drives the connecting shaft 13, shaft body 41 and aluminum disk 4 to rotate synchronously. When the drive shaft body 3 rotates at high speed, the support slide 51 is driven to move closer to the aluminum disk 4 by the lead screw motor 54. Since the aluminum disk 4 is a good conductor, electromagnetic induction will occur and eddy currents will be generated. The eddy currents in the aluminum disk 4 are subjected to Ampere force in the magnetic field of the magnet. These forces generate a torque on the aluminum disk 4 in the opposite direction of rotation, that is, a resistance torque, thereby increasing the torque borne by the drive shaft body 3 during rotation. The faster the rotation speed of the aluminum disk 4 and the drive shaft body 3, the greater the resistance torque. By adjusting the distance of the strong magnet 53 to the aluminum disk 4, different types of torque loading can be applied to the drive shaft body 3, solving the problem that existing devices are difficult to simulate the complex and variable stress environment that the drive shaft bears on the vehicle.

[0021] like Figures 1-4 and Figures 6-8 As shown, the connection between the aluminum disk 4 and the connecting shaft 13 is the shaft body 41 on the aluminum disk 4; a cooling mechanism 6 for cooling the aluminum disk 4 is installed on the top of the support platform 1. The cooling mechanism 6 includes a heat-conducting annular component 1 62 and a heat-conducting annular component 2 64, which are respectively fixedly sleeved on the outer periphery of the shaft body 41 and the aluminum disk 4. The outer periphery of the heat-conducting annular component 1 62 and the heat-conducting annular component 2 64 are respectively rotatably sealed with a sealing ring 1 63 and a sealing ring 2 65. The sealing ring 1 63 and the sealing ring 2 65 are respectively provided with their own support feet, and the support feet are fixedly installed on the top of the support platform 1. The heat-conducting annular component 1 62 is arranged in a ring and fixedly connected with several metal heat exchange pipes 66, and the other end of the metal heat exchange pipes 66 is fixedly connected to the heat-conducting annular component 2 64. The top of the support platform 1 is provided with a liquid circulation mechanism 61 for pumping cooling water into the heat-conducting annular component 1 62 and extracting cooling water from the heat-conducting annular component 2 64 for circulation. The aluminum disk 4 has several grooves on the side facing the metal heat exchange pipes 66, and the end of the metal heat exchange pipes 66 near the aluminum disk 4 can be inserted into the grooves. The liquid circulation mechanism 61 includes a cylindrical component 611 fixedly installed on the plate of the support platform 1. A pump body 613 is fixedly installed on the top of the support platform 1. The input end and output end of the pump body 613 are respectively fixedly connected to a pipe 612 and a pipe 614. One end of the pipe 612 is fixedly connected to the bottom of the cylindrical component 611. The other end of the pipe 614 can pass through a sealing ring 63 and is fixedly connected to a heat-conducting annular component 62. A return pipe 615 is fixedly connected to the middle of the cylindrical component 611. The other end of the return pipe 615 can pass through and is fixedly connected to a heat-conducting annular component 64. The cylindrical component 611 contains circulating cooling water with the liquid level located at the lower part of the cylindrical component 611; Using the above scheme, the transmission shaft body 3 rotates at a constant speed, and as the strong magnet 53 approaches the aluminum disk 4, there will be continuous relative motion between the aluminum disk 4 and the strong magnet 53. Since there is resistance inside the strong magnet 53, when the eddy current flows through the resistance, heat will be generated due to the Joule effect. At this time, the pump body 613 will draw the cooling water in the cylinder part 611 through the first pipe 612, and send it into the second heat-conducting ring part 64 through the second pipe 614 in sequence through the first heat-conducting ring part 62 and the metal heat exchange pipe 66 to cool the aluminum disk 4. The cooling water in the second heat-conducting ring part 64 will flow back to the cylinder part 611 through the return pipe 615 for subsequent circulation. Furthermore, as the heat generated in the aluminum disc 4 is transferred to the cooling water inside it through the heat-conducting annular component 64, and some of the cooling water turns into gas in the liquid circulation mechanism 61, the pressure inside the heat-conducting annular component 64 will increase sharply, thereby increasing the resistance between the heat-conducting annular component 64. In this case, the increased resistance between the heat-conducting annular component 64 and the sealing ring 65 will also exert resistance on the drive shaft body 3.

[0022] like Figures 1-4 and Figures 9-10 As shown, the lower middle part of the moving seat 12 is columnar, and its columnar part will pass through the support platform 1 and extend to its bottom. In the initial state, the moving seat 12 has an upward tendency due to the elastic force of its own spring part. The bottom part of the moving seat 12 located below the support platform 1 is the piston end, and the piston end is located in the upper middle part of the cylindrical part 611 in the initial state. When the piston end is in the upper middle part of the cylindrical part 611, it can move up or down. The middle part of the cylindrical component 611 is provided with a one-way liquid inlet 6111 that can replenish cooling water into the cavity of the cylindrical component 611 in one direction; the middle part of the cylindrical component 611 is also provided with a pressure relief valve 6112 for discharging excess gas inside the cylindrical component 611. Using the above scheme, the heat carried by the cooling water flowing back to the cylinder 611 will cause some of the cooling water to turn into gas. At this time, the pressure inside the cylinder 611 will increase, thereby pushing the moving seat 12 and causing it to have an upward trend, and applying pressure to the shaft part of the transmission shaft body 3, so as to achieve targeted simulation test of the actual operating environment of the transmission shaft body. When the blocking mechanism 5 stops operating while the transmission shaft body 3 continues to rotate, the water source inside the cylinder 611 will slowly cool down during this process, and the gas will condense into liquid. At this time, the pressure inside the cylinder 611 will drop rapidly, and the piston end of the moving seat 12 will have a downward trend, and will apply pressure to the transmission shaft body 3 on the moving seat 12 again. It is worth noting that when the pressure inside the support platform 1 is too high, the gas inside will be discharged outward through the pressure relief valve 6112. When the cooling water inside the cylinder 611 is insufficient, the operator can add cooling water to the cylinder 611 through the one-way replenishment port 6111. After the cooling water is replenished through the one-way replenishment port 6111, the operator needs to seal the one-way replenishment port 6111 with a rubber stopper to prevent external gas from replenishing the one-way replenishment port 6111 when the internal pressure of the cylinder 611 decreases.

[0023] Working principle and usage process of this invention: During testing, after the drive shaft body 3 is mounted on the moving seat 12 and one of the fixed seats 11, the drive shaft body 3 is driven to rotate by the power motor 2, which in turn drives the connecting shaft 13, shaft body 41 and aluminum disk 4 to rotate synchronously. When the drive shaft body 3 rotates at high speed, the support slide 51 is driven to move closer to the aluminum disk 4 by the lead screw motor 54. Since the aluminum disk 4 is a good conductor, electromagnetic induction will occur and eddy currents will be generated. The eddy currents in the aluminum disk 4 are subjected to Ampere force in the magnetic field of the magnet. These forces generate a torque on the aluminum disk 4 in the opposite direction of rotation, i.e., a resistance torque, thereby increasing the torque borne by the drive shaft body 3 during rotation. The faster the rotation speed of the aluminum disk 4 and the drive shaft body 3, the greater the resistance torque. When the drive shaft body 3 rotates at a constant speed and the strong magnet 53 approaches the aluminum disc 4, there will be continuous relative motion between the aluminum disc 4 and the strong magnet 53. Since there is resistance inside the strong magnet 53, when the eddy current flows through the resistance, heat will be generated due to the Joule effect. At this time, the pump body 613 will draw the cooling water in the cylinder part 611 through the first pipe 612, and send it into the second heat-conducting annular part 64 through the second pipe 614 in sequence through the first heat-conducting annular part 62 and the metal heat exchange pipe 66 to cool the aluminum disc 4. The cooling water in the second heat-conducting annular part 64 will flow back to the cylinder part 611 through the return pipe 615 for subsequent circulation. The cooling water flowing back into the cylinder 611 carries heat, causing some of the cooling water to turn into gas. At this time, the pressure inside the cylinder 611 increases, which pushes the moving seat 12 and causes it to have an upward tendency, and applies pressure to the shaft part of the transmission shaft body 3, so as to achieve targeted simulation test of the actual operating environment of the transmission shaft body.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for automobile parts production, comprising a support platform (1) and a power motor (2), a moving base (12), and two sets of fixed bases (11) mounted thereon, characterized in that, Also includes: The transmission shaft body (3) is installed at the output end of the power motor (2). The transmission shaft body (3) is rotatably connected to a fixed seat (11) and a moving seat (12). The other end of the transmission shaft body (3) is connected to a connecting shaft (13), and the other end of the connecting shaft (13) is connected to an aluminum disc (4). The top of the support platform (1) is also equipped with a blocking mechanism (5). The blocking mechanism (5) includes a support slide (51) movably mounted on the support platform (1). A fixing member (52) is fixedly mounted on the upper part of the support slide (51). Several strong magnets (53) are arranged in a ring array and fixedly mounted inside the fixing member (52). A lead screw motor (54) for driving the support slide (51) to move back and forth in the horizontal direction is provided at the bottom of the support platform (1). A slider (55) is symmetrically arranged at the bottom of the support slide (51). The slider (55) can pass through the plate part of the support platform (1) downward. When the support slide (51) moves in the horizontal direction, it can drive the strong magnet (53) to approach the aluminum disk (4).

2. The automotive parts production testing device according to claim 1, characterized in that: The connecting shaft (13) is rotatably connected to another fixed seat (11).

3. The automotive parts production testing device according to claim 1, characterized in that: The connection between the aluminum disc (4) and the connecting shaft (13) is the shaft body (41) on the aluminum disc (4). The top of the support platform (1) is equipped with a cooling mechanism (6) for cooling the aluminum plate (4).

4. The automotive parts production testing device according to claim 3, characterized in that: The cooling mechanism (6) includes a heat-conducting annular component one (62) and a heat-conducting annular component two (64) respectively fixedly sleeved on the outer periphery of the shaft part (41) and the aluminum disk (4). The outer periphery of the heat-conducting annular component one (62) and the heat-conducting annular component two (64) are respectively rotatably sealed with a sealing ring one (63) and a sealing ring two (65). The sealing ring one (63) and the sealing ring two (65) are respectively provided with their own support feet, and the support feet are fixedly installed on the top of the support platform (1). The heat-conducting annular component one (62) is arranged in a ring and fixedly connected with several metal heat exchange pipes (66), and the other end of the metal heat exchange pipes (66) is fixedly connected to the heat-conducting annular component two (64). The top of the support platform (1) is provided with a liquid circulation mechanism (61) for pumping cooling water into the heat-conducting annular component one (62) and extracting the cooling water from the heat-conducting annular component two (64) for circulation.

5. The automotive parts production testing device according to claim 4, characterized in that: The aluminum disc (4) has several grooves on the side facing the metal heat exchange pipe (66), and the end of the metal heat exchange pipe (66) near the aluminum disc (4) can be inserted into the groove.

6. The automotive parts production testing device according to claim 4, characterized in that: The liquid circulation mechanism (61) includes a cylindrical component (611) fixedly installed on the plate of the support platform (1). A pump body (613) is fixedly installed on the top of the support platform (1). The input end and output end of the pump body (613) are respectively fixedly connected to pipe one (612) and pipe two (614). One end of pipe one (612) is fixedly connected to the bottom of the cylindrical component (611). The other end of pipe two (614) can pass through sealing ring one (63) and is fixedly connected to heat-conducting ring one (62). A return pipe (615) is fixedly connected to the middle of the cylindrical component (611). The other end of the return pipe (615) can pass through and is fixedly connected to heat-conducting ring two (64). The cylindrical component (611) contains circulating cooling water with the liquid level located below the center of the cylindrical component (611).

7. The automotive parts production testing device according to claim 6, characterized in that: The lower middle part of the moving seat (12) is columnar, and its columnar part will pass through the support platform (1) and extend to its bottom. In the initial state, the moving seat (12) has an upward tendency due to the elastic force of its own spring part. The bottom part of the moving seat (12) located below the support platform (1) is the piston end, and the piston end is located in the upper middle part of the cylindrical part (611) in the initial state. When the piston end is in the upper middle part of the cylindrical part (611), it can move up or down.

8. The automotive parts production testing device according to claim 6, characterized in that: The cylindrical component (611) is provided with a one-way liquid inlet (6111) in the middle, which can replenish cooling water into the cavity of the cylindrical component (611) in one direction.

9. The automotive parts production testing device according to claim 6, characterized in that: The middle part of the cylindrical component (611) is also provided with a pressure relief valve (6112) for discharging excess gas inside the cylindrical component (611).

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