Automatic neutral gear returning device for automatic mechanical transmission (AMT) offline

Abstract

The utility model relates to an AMT (automated mechanical transmission) auxiliary assembly device, in particular to an automatic neutral gear returning device for an AMT offline, which is used for solving the defects that the AMT cannot quickly return to a neutral gear after gear forwarding, the operation complexity is increased, the production efficiency is reduced, and even a transmission or a clutch part is possibly damaged due to the fact that an input shaft is rotated by a special tool or manually. The AMT offline automatic neutral gear returning device integrates control of electric power and an air source, can be used in cooperation with a controller, can achieve rapid neutral gear returning of a transmission through one-key operation, reduces time and manpower of manual intervention, and improves production efficiency.

Description

Technical Field

[0001] The utility model relates to an AMT auxiliary assembly device, in particular to an AMT off-line automatic neutral return device. Background Art

[0002] AMT (Automatic Mechanical Transmission) has been widely used in the commercial vehicle field in recent years. It combines the advantages of automatic transmissions and manual transmissions. It not only maintains the mechanical efficiency of the manual transmission but also realizes the convenience of driving through automatic control. However, in the assembly and production process of AMT, there are some technical problems to be solved urgently during the assembly of AMT with the engine, especially in the co-assembly link on the whole vehicle assembly line.

[0003] The traditional manual transmission and AMT are relatively similar in mechanical body structure. The main difference is that AMT can automatically complete the shifting operation, while the manual transmission requires the driver to shift gears manually. When the traditional manual transmission is co-assembled with the engine, the transmission can be placed in gear, and the position of the spline of the input shaft and the internal spline of the clutch driven disc hub can be adjusted by manually rotating the output flange to achieve smooth assembly. However, for AMT, since it requires a power and air pressure control system to shift gears during the powertrain assembly stage, the transmission cannot quickly return to the neutral position after being shipped in gear without power and air pressure, thus affecting the production rhythm of the host factory.

[0004] Currently, there are two main problems in the AMT assembly process: First, when AMT is shipped in gear, due to the lack of a suitable method to quickly return it to the neutral position, it is difficult to operate during the engine assembly; Second, when AMT is shipped in neutral, a special tooling or manual rotation of the input shaft is usually required to align the input shaft with the clutch driven disc hub. For example, a connection tool for an automated mechanical transmission and an engine disclosed in Chinese Patent CN216943361U, which is a special tooling, speeds up the whole vehicle production beat and improves production efficiency, but at the same time increases the operation complexity, reduces the production efficiency, and may even cause damage to the transmission or clutch components.

[0005] The existence of these problems limits the application efficiency of AMT on large-scale production assembly lines and affects the rhythm of the commercial vehicle production line. Therefore, there is an urgent need for a new technical solution to solve the alignment problem during the co-assembly of AMT and the engine. Summary of the Utility Model

[0006] The purpose of the present utility model is to solve the deficiency that after the AMT is shipped in gear, it cannot quickly return to neutral gear, and the use of special tooling or manual rotation of the input shaft by workers increases the operation complexity, reduces the production efficiency, and may even cause damage to the transmission or clutch components, and provides an automatic neutral-return device for AMT off-line.

[0007] In order to solve the above deficiencies of the existing technology, the present utility model provides the following technical solutions:

[0008] An automatic neutral-return device for AMT off-line, characterized in that it includes a box body, a power cord, a wire harness, an air outlet pipe, and an air inlet pipe; an inverter, a pneumatic pressure regulating valve, and an installation position for setting a controller are arranged inside the box body, and an operation display surface and heat dissipation holes are arranged on the box body; the wire harness includes a power supply wire harness and a signal transmission wire harness;

[0009] One end of the signal transmission wire harness is used to connect to the controller, and the other end of the signal transmission wire harness is located outside the box body and is used to connect to the AMT connector;

[0010] The input end of the power cord is used to connect to the workshop power supply, the output end is located inside the box body and is connected to the input end of the inverter, the output end of the inverter is connected to the input end of the power supply wire harness located inside the box body, and the output end of the power supply wire harness is located outside the box body and is used to connect to the AMT connector; the inverter is used to regulate the voltage;

[0011] The input end of the air inlet pipe is used to connect to the workshop air supply pipe, the output end is located inside the box body and is connected to the input end of the air outlet pipe located inside the box body through the pneumatic pressure regulating valve, the output end of the air outlet pipe is located outside the box body and is used to connect to the AMT air inlet, and a pneumatic pressure sensor is arranged at the output end of the air outlet pipe;

[0012] An on-off key, a shutdown key, a voltage unit, a pneumatic pressure unit, and a gear unit are arranged on the operation display surface; the on-off key and the shutdown key are respectively used to connect and cut off the power supply; the voltage unit is connected to the inverter and is used to regulate the output voltage of the power supply wire harness; the pneumatic pressure unit is respectively connected to the pneumatic pressure regulating valve and the pneumatic pressure sensor and is used to regulate the output pneumatic pressure of the air outlet pipe; the gear unit is used to connect to the controller and display the real-time gear of the AMT sent by the controller.

[0013] Further, the voltage unit includes a voltage adjustment knob, a voltage display screen, and a voltage indicator light. The voltage adjustment knob, the voltage display screen, and the voltage indicator light are respectively connected to the inverter. The voltage adjustment knob is used to control the preset output voltage of the power supply wire harness by adjusting the voltage output by the inverter. The voltage display screen is used to display the real-time output voltage of the power supply wire harness, and the voltage indicator light is used to give an indication when the real-time output voltage is equal to the preset output voltage.

[0014] Further, the air pressure unit includes an air pressure adjustment knob, an air pressure display screen, and an air pressure indicator light. The air pressure adjustment knob is connected to an air pressure regulating valve and is used to control the preset output air pressure of the air outlet pipe by adjusting the setting of the air pressure regulating valve. The air pressure display screen is connected to an air pressure sensor and is used to display the real-time output air pressure. The air pressure indicator light is connected to the air pressure sensor and is used to give an indication when the real-time output air pressure is equal to the preset output air pressure.

[0015] Further, the gear position unit includes a manual emptying knob, a gear position display screen, and a gear position indicator light. The manual emptying knob, the gear position display screen, and the gear position indicator light are respectively connected to the controller. The manual emptying knob is used to send an empty gear command to the AMT through the controller. The gear position display screen is used to receive and display the real-time gear position of the AMT through the controller. The gear position indicator light is used to receive the real-time gear position of the AMT through the controller and give an indication when the real-time gear position of the AMT is in the empty gear.

[0016] Further, both the input end of the air inlet pipe and the output end of the air outlet pipe are quick connectors.

[0017] Further, both ends of the power supply wire harness and the signal transmission wire harness are of snap type and are provided with sealing rings and protective covers.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] (1) The automatic empty gear device for AMT off-line of the present utility model integrates the control of power and air source, can be used in cooperation with the controller, and can realize the quick empty gear of the transmission through one-key operation, reducing the time and manpower of manual intervention and improving the production efficiency.

[0020] (2) Through automatic control, the present utility model reduces the risk of damage to the input shaft and the clutch driven disc in manual operation, and reduces the equipment maintenance and replacement costs.

[0021] (3) The present utility model is equipped with a gear position display screen and an indicator light, which can display the gear position state of the transmission in real time and give a clear indication when the transmission returns to the empty gear, avoiding manual judgment errors.

[0022] (4) The design of the present utility model greatly simplifies the operation process. The staff only needs to make simple connections and operations, without complex manual adjustments, greatly reducing the operation difficulty.

[0023] (5) The present utility model can be used in various assembly environments. Whether it is a place with power supply and air supply or a temporary installation scenario, it can ensure that the AMT transmission returns to the empty gear smoothly, with strong applicability. Description of the Drawings

[0024] Figure 1Structural schematic diagram of an embodiment of an automatic neutral return device for AMT off-line in the present utility model;

[0025] Figure 2 Structural schematic diagram of the operation display surface in the embodiment of the present utility model.

[0026] Explanation of the reference numerals in the drawings is as follows: 1 - box body; 2 - power cord; 3 - wire harness; 4 - air outlet pipe; 5 - air inlet pipe; 6 - operation display surface, 601 - start key, 602 - stop key, 611 - voltage adjustment knob, 612 - voltage display screen, 613 - voltage indicator light, 621 - air pressure adjustment knob, 622 - air pressure display screen, 623 - air pressure indicator light, 631 - manual neutral return knob, 632 - gear position display screen, 633 - gear position indicator light; 7 - heat dissipation holes. Detailed implementation manners

[0027] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0028] Refer to Figure 1 、 Figure 2 An automatic neutral return device for AMT off-line includes a box body 1, a power cord 2, a wire harness 3, an air outlet pipe 4, and an air inlet pipe 5. The wire harness 3 includes a signal transmission wire harness and a power supply wire harness. Both ends of the power supply wire harness and the signal transmission wire harness adopt a snap-on type, which is convenient for quick disassembly and assembly, and is provided with a sealing ring and a protective cover, which helps to prevent water and dust, extend the service life of the equipment and improve the reliability of the connectors.

[0029] An inverter, a pneumatic control valve, and an installation position for setting a controller are arranged in the box body 1, and an operation display surface 6 and heat dissipation holes 7 are arranged on the box body 1.

[0030] One end of the signal transmission wire harness is used to connect to the controller, and the other end of the signal transmission wire harness is located outside the box body 1 and is used to connect to the AMT connector.

[0031] The input end of the power cord 2 is used to connect to the 220V / 380V power supply in the workshop, the output end is located inside the box body 1 and is connected to the input end of the inverter, the output end of the inverter is connected to the input end of the power supply wire harness located inside the box body 1, and the output end of the power supply wire harness is located outside the box body 1 and is used to connect to the AMT connector; the inverter is used to convert 220V / 380V to 12 / 24V.

[0032] The input end of the air inlet pipe 5 is used to connect to the workshop air supply pipe, the output end is located inside the box body 1 and is connected to the input end of the air outlet pipe 4 located inside the box body 1 through a pneumatic control valve, and the output end of the air outlet pipe 4 is located outside the box body 1 and is used to connect to the AMT air inlet.

[0033] An on - off key 601, a shutdown key 602, a voltage unit, a pressure unit, and a gear unit are provided on the operation display surface 6; the on - off key 601 and the shutdown key 602 are respectively used to connect and cut off the power supply.

[0034] The voltage unit includes a voltage adjustment knob 611, a voltage display screen 612, and a voltage indicator light 613. The voltage adjustment knob 611, the voltage display screen 612, and the voltage indicator light 613 are respectively connected to an inverter. The voltage adjustment knob 611 controls the preset output voltage of the power supply harness by adjusting the voltage output by the inverter. The voltage display screen 612 is used to display the real - time output voltage of the power supply harness. The voltage indicator light 613 is used to give an indication when the real - time output voltage is equal to the preset output voltage, specifically, the voltage indicator light 613 turns green.

[0035] The pressure unit includes a pressure adjustment knob 621, a pressure display screen 622, and a pressure indicator light 623. The pressure adjustment knob 621 is connected to a pressure regulating valve, and controls the preset output air pressure of the air outlet pipe 4 by adjusting the setting of the pressure regulating valve. The pressure display screen 622 is connected to a pressure sensor and is used to display the real - time output air pressure. The pressure indicator light 623 is connected to the pressure sensor and is used to give an indication when the real - time output air pressure is equal to the preset output air pressure, specifically, the pressure indicator light 623 turns green.

[0036] The gear unit includes a manual neutral return knob 631, a gear display screen 632, and a gear indicator light 633. The manual neutral return knob 631, the gear display screen 632, the gear indicator light 633, and the signal transmission harness are respectively connected to a controller. By rotating the manual neutral return knob 631, the controller sends a neutral - gear command to the AMT, receives the displacement value fed back by the AMT, and converts the displacement value into the real - time gear of the AMT and transmits it to the gear display screen 632 and the gear indicator light 633. The gear display screen 632 is used to receive and display the real - time gear of the AMT through the controller. The gear indicator light 633 is used to receive the real - time gear of the AMT through the controller and give an indication when the real - time gear of the AMT is in neutral, specifically, the gear indicator light 633 turns green.

[0037] The working principle of the present utility model is as follows:

[0038] Step 1: Set a controller at the installation position, and connect the manual neutral return knob 631, one end of the signal transmission harness, the gear display screen 632, and the gear indicator light 633 to the controller respectively; then connect the power cord 2 to the 220V / 380V power supply in the workshop, the air inlet pipe 5 to the workshop air supply pipe, the air outlet pipe 4 to the AMT air inlet, the other end of the signal transmission harness to the AMT connector, and the output end of the power supply harness to the AMT connector.

[0039] Step 2: Press the start key 601, rotate the manual emptying knob 631, send an empty gear command to the AMT through the controller, the AMT solenoid valve operates, pushes the gear shifting head to move, and feeds back the displacement value to the controller, and the AMT real-time gear position is displayed by the gear position display screen 632;

[0040] Step 3: When the AMT real-time gear position is in the neutral gear, the gear position indicator light 633 turns green, and press the close key 602;

[0041] Step 4: Remove the connections between components according to Step 1.

Claims

1. An AMT offline automatic neutral return device, characterized in that: It includes a box body (1), a power cord (2), a wiring harness (3), an air outlet pipe (4), and an air inlet pipe (5); an inverter, a pneumatic pressure regulating valve, and an installation position for setting a controller are provided inside the box body (1), and an operation display surface (6) and heat dissipation holes (7) are provided on the box body (1); the wiring harness (3) includes a power supply wiring harness and a signal transmission wiring harness; One end of the signal transmission wiring harness is used to connect to the controller, and the other end of the signal transmission wiring harness is located outside the box body (1) and is used to connect to the AMT connector; The input end of the power cord (2) is used to connect to the workshop power supply, the output end is located inside the box body (1) and is connected to the input end of the inverter, the output end of the inverter is connected to the input end of the power supply wiring harness located inside the box body (1), and the output end of the power supply wiring harness is located outside the box body (1) and is used to connect to the AMT connector; the inverter is used to regulate the voltage; The input end of the air inlet pipe (5) is used to connect to the workshop air supply pipe, the output end is located inside the box body (1) and is connected to the input end of the air outlet pipe (4) located inside the box body (1) through the pneumatic pressure regulating valve, the output end of the air outlet pipe (4) is located outside the box body (1) and is used to connect to the AMT air inlet, and a pneumatic pressure sensor is provided at the output end of the air outlet pipe (4); An on key (601), an off key (602), a voltage unit, a pneumatic pressure unit, and a gear unit are provided on the operation display surface (6); the on key (601) and the off key (602) are respectively used to connect and cut off the power supply; the voltage unit is connected to the inverter and is used to regulate the output voltage of the power supply wiring harness; the pneumatic pressure unit is respectively connected to the pneumatic pressure regulating valve and the pneumatic pressure sensor and is used to regulate the output pneumatic pressure of the air outlet pipe (4); the gear unit is used to connect to the controller and display the real-time gear of the AMT sent by the controller.

2. An automatic neutral return device for AMT offline according to claim 1, characterized in that: The voltage unit includes a voltage adjustment knob (611), a voltage display screen (612), and a voltage indicator light (613). The voltage adjustment knob (611), the voltage display screen (612), and the voltage indicator light (613) are respectively connected to the inverter. The voltage adjustment knob (611) is used to control the preset output voltage of the power supply wiring harness by adjusting the voltage output by the inverter. The voltage display screen (612) is used to display the real-time output voltage of the power supply wiring harness. The voltage indicator light (613) is used to indicate when the real-time output voltage is equal to the preset output voltage.

3. An automatic neutral return device for AMT offline according to claim 1, characterized in that: The pneumatic pressure unit includes a pneumatic pressure adjustment knob (621), a pneumatic pressure display screen (622), and a pneumatic pressure indicator light (623). The pneumatic pressure adjustment knob (621) is connected to the pneumatic pressure regulating valve and is used to control the preset output pneumatic pressure of the air outlet pipe (4) by adjusting the setting of the pneumatic pressure regulating valve. The pneumatic pressure display screen (622) is connected to the pneumatic pressure sensor and is used to display the real-time output pneumatic pressure. The pneumatic pressure indicator light (623) is connected to the pneumatic pressure sensor and is used to indicate when the real-time output pneumatic pressure is equal to the preset output pneumatic pressure.

4. An automatic neutral return device for AMT off-line according to claim 2, characterized in that: The gear unit includes a manual neutral return knob (631), a gear display screen (632) and a gear indicator light (633). The manual neutral return knob (631), the gear display screen (632) and the gear indicator light (633) are respectively connected to the controller. The manual neutral return knob (631) is used to send a neutral return command to the AMT through the controller. The gear display screen (632) is used to receive and display the real-time gear of the AMT through the controller. The gear indicator light (633) is used to receive the real-time gear of the AMT through the controller and indicate when the real-time gear of the AMT is in neutral.

5. An AMT offline automatic neutral return device according to any one of claims 1 to 4, characterized in that: Both the input end of the intake pipe (5) and the output end of the exhaust pipe (4) are quick connectors.

6. An AMT offline automatic neutral return device according to any one of claims 1 to 4, characterized in that: Both ends of the power supply wire harness and the signal transmission wire harness are of snap type, and are provided with sealing rings and protective covers.

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