A control system for a dump truck

Abstract

This invention discloses a dump truck control system, including a cargo box lifting control device, a rear door lifting control device, and a rear door locking control device. The cargo box lifting control device includes a lifting cylinder, a pneumatically controlled directional valve, a control valve, a limit valve, a gear oil pump, and a hydraulic oil tank. The rear door lifting control device includes a rear door lifting cylinder and a dual-control multi-way valve. The rear door locking device includes a rear door locking cylinder, a dual-control multi-way valve, and a normally closed limit valve. By sequentially operating the control valves, the locking and opening of the cargo box rear door are achieved. The control device has good stability and a simple structure, realizing the locking and opening of the rear door and the safe lifting of the cargo box.

Description

Technical Field

[0001] This invention relates to the field of dump truck technology, specifically a dump truck control system. Background Technology

[0002] The lifting device is the most important function of a dump truck, as it is used to unload transported goods. Conventional rear door opening requires the truck bed to be raised to a certain angle, with the opening angle gradually increasing as the bed is raised. This conventional method is not conducive to rapid unloading and can cause impact on the rear door during unloading. Conventional rear door locking relies on manual hooks and double chains, which is often inadequate and insecure, leading to cargo leakage and poor sealing during vehicle operation. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a dump truck control system.

[0004] The technical solution provided by this invention is a dump truck control system, characterized in that it includes a cargo box lifting control device, a rear door lifting control device, and a rear door locking control device.

[0005] The aforementioned car body lifting control device comprises a lifting cylinder, a pneumatic directional valve, a control air valve, a limit air valve, a gear oil pump, and a hydraulic oil tank. The lifting cylinder, pneumatic directional valve, gear oil pump, and hydraulic oil tank are connected via oil pipes. The second connector of the pneumatic directional valve is connected to the thirtieth connector of the gear oil pump, the third connector of the pneumatic directional valve is connected to the first connector of the lifting cylinder, and the thirty-second connector of the gear oil pump is connected to the thirty-third connector of the hydraulic oil tank. The pneumatic directional valve is mounted on the hydraulic oil tank and connected to the thirty-fourth connector of the hydraulic oil tank. The directional valve, control air valve, and limit air valve are connected via air pipes and air pipe connectors. The seventh connector of the control air valve is connected to the eleventh connector of the limit air valve, the ninth connector of the control air valve is connected to the twelfth connector of the limit air valve, the tenth connector of the control air valve is connected to the fifth connector of the pneumatic directional valve, and the fourth connector of the pneumatic directional valve is connected to the thirteenth connector of the limit air valve. The eighth connector of the control air valve is connected to the twenty-seventh connector of the normally closed limit air valve. By operating the control air valve, the lifting cylinder, the pneumatic directional valve, and the limit air valve are linked to achieve the lifting, stopping, and lowering of the carriage.

[0006] The rear door lifting control device consists of a rear door lifting cylinder, a dual-control multi-way valve, a lifting remote controller, and a gear oil pump. The rear door lifting cylinder, dual-control multi-way valve, and gear oil pump are connected via oil pipes. The sixteenth connector of the dual-control multi-way valve is connected to the thirty-first connector of the gear oil pump; the eighteenth connector of the dual-control multi-way valve is connected to the fourteenth connector of the rear door lifting cylinder; the nineteenth connector of the dual-control multi-way valve is connected to the fifteenth connector of the rear door lifting cylinder; and the seventeenth connector of the dual-control multi-way valve is connected to the sixth connector of the pneumatic reversing valve. The dual-control multi-way valve and the lifting remote controller are connected via wires. The twenty-second connector of the lifting remote controller is connected to the thirty-fifth connector of the dual-control multi-way valve; the twenty-third connector of the lifting remote controller is connected to the thirty-sixth connector of the dual-control multi-way valve; and the thirty-seventh and thirty-eighth connectors of the dual-control multi-way valve are connected to the twenty-seventh connector of the normally closed limit valve. By operating the lifting remote controller, the rear door lifting cylinder, dual-control multi-way valve, and gear oil pump are linked, ultimately achieving the lifting and lowering of the rear door.

[0007] The rear door locking control device consists of a rear door locking cylinder, a dual-control multi-way valve, a normally closed limit valve, and a locking remote control. The rear door locking cylinder and the dual-control multi-way valve are connected by oil pipes; the 24th connector of the rear door locking cylinder is connected to the 20th connector of the dual-control multi-way valve, and the 25th connector of the rear door locking cylinder is connected to the 21st connector of the dual-control multi-way valve. The dual-control multi-way valve and the locking remote control are connected by wires; the 28th connector of the locking remote control is connected to the 39th connector of the dual-control multi-way valve, and the 29th connector of the locking remote control is connected to the 40th connector of the dual-control multi-way valve. Connect the 41st and 42nd connectors of the dual-control multi-way valve to the 43rd connector of the main vehicle air source, and connect the 26th connector of the normally closed limit valve to the 43rd connector of the main vehicle air source. By operating the locking remote control, the rear door locking cylinder and the dual-control multi-way valve are linked to achieve the locking and unlocking of the rear door. The normally closed limit valve is installed on the rear door locking cylinder. The locking and unlocking of the rear door locking cylinder controls the normally closed limit valve. When the rear door locking cylinder locks the rear plate, the normally closed limit valve is in the closed state. When the rear door locking cylinder releases the rear plate, the normally closed limit valve is in the open state.

[0008] Furthermore, the air source for the rear door locking control device is the main vehicle air source from the chassis; the air source for the rear door lifting control device and the cargo box lifting control device is the air source controlled by a normally closed limit valve.

[0009] The beneficial effects of this invention are: 1. By applying a reversing valve, a multi-way valve, and a limit valve, a dump truck control device is provided, including a cargo box lifting control device, a rear door lifting control device, and a rear door locking control device. The rear door lifting control device allows for quick and convenient rear door opening with a large opening angle, avoiding impact of cargo on the rear door during lifting. The rear door locking control device ensures reliable rear door locking and a secure rear door seal. 2. By operating the valves sequentially, the safe operation of cargo box lifting, rear door opening, and rear door locking is effectively controlled. Attached Figure Description

[0010] Figure 1 This is a connection diagram of the present invention.

[0011] In the diagram: 01 Lifting cylinder, 011 First connector, 02 Pneumatic directional valve, 021 Second connector, 022 Third connector, 023 Fourth connector, 024 Fifth connector, 025 Sixth connector, 03 Control air valve, 031 Seventh connector, 032 Eighth connector, 033 Ninth connector, 034 Tenth connector, 04 Limit valve, 041 Eleventh connector, 042 Twelfth connector, 043 Thirteenth connector, 05 Rear door lifting cylinder, 051 Fourteenth connector, 052 Fifteenth connector, 06 Dual-control multi-way valve, 061 Sixteenth connector, 062 Seventeenth connector, 063 Eighteenth connector, 064 Nineteenth connector, 065 Twentieth connector, 066 Twenty-first connector, A Thirty-fifth connector, B Thirty-sixth connector. Connectors: C (37th connector), D (38th connector), E (39th connector), F (40th connector), G (41st connector), H (42nd connector), 07 Lifting remote control, 071 (22nd connector), 072 (23rd connector), 08 Rear door locking cylinder, 081 (24th connector), 082 (25th connector), 09 Normally closed limit valve, 091 (26th connector), 092 (27th connector), 10 Locking remote control, 101 (28th connector), 102 (29th connector), 11 Main vehicle air source, 111 (43rd connector), 12 Gear oil pump, 121 (30th connector), 122 (31st connector), 123 (32nd connector), 13 Hydraulic oil tank, 131 (33rd connector), 132 (34th connector). Detailed Implementation

[0012] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings.

[0013] like Figure 1 As shown, a dump truck control device includes a cargo box lifting control device, a rear door lifting control device, and a rear door locking control device.

[0014] The lifting control device for the carriage consists of a lifting cylinder 01, a pneumatic directional valve 02, a control air valve 03, a limit air valve 04, a gear pump 12, and a hydraulic oil tank 13. The lifting cylinder 01, pneumatic directional valve 02, gear pump 12, and hydraulic oil tank 13 are connected by oil pipes. Specifically, the second connector 021 of the pneumatic directional valve 02 is connected to the thirtieth connector 121 of the gear pump 12, the third connector 022 of the pneumatic directional valve 02 is connected to the first connector 011 of the lifting cylinder 01, and the thirty-second connector 123 of the gear pump 12 is connected to the thirty-third connector 131 of the hydraulic oil tank 13. The pneumatic directional valve 02 is mounted on the hydraulic oil tank 13 and connected to the thirty-fourth connector 132 of the hydraulic oil tank 13. The pneumatic directional valve 02, control air valve 03, limit air valve 04, gear pump 12, and hydraulic oil tank 13 are connected by oil pipes. Air valve 03 and limit air valve 04 are connected via air pipes and air pipe connectors. Specifically, the seventh connector 031 of control air valve 03 is connected to the eleventh connector 041 of limit air valve 04, the ninth connector 033 of control air valve 03 is connected to the twelfth connector 042 of limit air valve 04, the tenth connector 034 of control air valve 03 is connected to the fifth connector 024 of pneumatic directional valve 02, and the fourth connector 023 of pneumatic directional valve 02 is connected to the thirteenth connector 043 of limit air valve 04. The eighth connector 032 of control air valve 03 is connected to the twenty-seventh connector 092 of normally closed limit valve 09. By operating control air valve 03, the lifting cylinder 01, pneumatic directional valve 02, and limit air valve 04 are linked to achieve the lifting, stopping, and lowering of the carriage.

[0015] The rear door lifting control device consists of a rear door lifting cylinder 05, a dual-control multi-way valve 06, a lifting remote controller 07, and a gear oil pump 12. The rear door lifting cylinder 05, dual-control multi-way valve 06, and gear oil pump 12 are connected via oil pipes. Specifically, the sixteenth connector 061 of the dual-control multi-way valve 06 is connected to the thirty-first connector 122 of the gear oil pump 12; the eighteenth connector 063 of the dual-control multi-way valve 06 is connected to the fourteenth connector 051 of the rear door lifting cylinder 05; the nineteenth connector 064 of the dual-control multi-way valve 06 is connected to the fifteenth connector 052 of the rear door lifting cylinder 05; and the seventeenth connector 062 of the dual-control multi-way valve 06 is connected to the pneumatic directional valve 07. Connect to the sixth connector 025 of 2; the dual-control multi-way valve 06 and the lifting remote control 07 are connected by wires, wherein the twenty-second connector 071 of the remote control 07 is connected to the thirty-fifth connector A of the dual-control multi-way valve 06, the twenty-third connector 072 of the lifting remote control 07 is connected to the thirty-sixth connector B of the dual-control multi-way valve 06, and the thirty-seventh connector C and the thirty-eighth connector D of the dual-control multi-way valve 06 are connected to the twenty-seventh connector 092 of the normally closed limit valve 09; by operating the lifting remote control 07, the rear door lifting cylinder 05, the dual-control multi-way valve 06, and the gear oil pump 12 are linked to achieve the lifting and lowering of the rear door;

[0016] The rear door locking control device consists of a rear door locking cylinder 08, a dual-control multi-way valve 06, a normally closed limit valve 09, and a locking remote control 10. The rear door locking cylinder 08 and the dual-control multi-way valve 06 are connected by oil pipes. Specifically, the 24th connector 081 of the rear door locking cylinder 08 is connected to the 20th connector 065 of the dual-control multi-way valve 06, and the 25th connector 082 of the rear door locking cylinder 08 is connected to the 21st connector 066 of the dual-control multi-way valve 06. The dual-control multi-way valve 06 and the locking remote control 10 are connected by wires. Specifically, the 28th connector 101 of the locking remote control 10 is connected to the 39th connector E of the dual-control multi-way valve 06, and the 29th connector 102 of the locking remote control 10 is connected to the 40th connector E of the dual-control multi-way valve 06. The head F is connected, and the forty-first connector G and forty-second connector H of the dual-control multi-way valve 06 are connected to the forty-third connector 111 of the main vehicle air source 11. The twenty-sixth connector 091 of the normally closed limit valve 09 is connected to the forty-third connector 111 of the main vehicle air source 11. By operating the locking remote control 10, the linkage between the rear door locking cylinder 08 and the dual-control multi-way valve 06 is realized, and the locking and unlocking of the rear door is finally realized. The normally closed limit valve 09 is installed on the rear door locking cylinder 08. The locking and unlocking of the rear door locking cylinder 08 controls the normally closed limit valve 09. When the rear door locking cylinder 08 locks the rear plate, the normally closed limit valve 09 is in the closed state. When the rear door locking cylinder 08 unlocks the rear plate, the normally closed limit valve 09 is in the open state.

[0017] The air source for the rear door locking control device is the main vehicle air source 11 from the chassis; the air source for the rear door lifting control device and the cargo box lifting control device is the air source controlled by the normally closed limit valve 09.

[0018] In a dump truck control device of the present invention, the rear door locking cylinder in the rear door locking control device retracts, causing the rear door lock plate to release the rear door, and simultaneously causing the normally closed limit valve to open, so that the truck body lifting control device and the rear door lifting control device can obtain air supply and can perform lifting operations; in the rear door locking device, the rear door locking cylinder extends, causing the rear door lock plate to close, locking the rear door, and causing the normally closed limit valve to close, so that the truck body lifting device and the rear door lifting device cannot obtain air supply and cannot perform lifting operations.

[0019] The above specific embodiments are merely preferred embodiments of the technical solution of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solution of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A control system for a dump truck, characterized by, The vehicle compartment lifting control device, the rear door lifting control device and the rear door locking control device are included. The vehicle compartment lifting control device is composed of a lifting oil cylinder (01), a pneumatic control reversing valve (02), a control air valve (03), a limiting air valve (04), a gear oil pump (12) and a hydraulic oil tank (13). The lifting oil cylinder (01), the pneumatic control reversing valve (02), the gear oil pump (12) and the hydraulic oil tank (13) are connected through oil pipes. The second joint (021) of the pneumatic control reversing valve (02) is connected with the thirtieth joint (121) of the gear oil pump (12), the third joint (022) of the pneumatic control reversing valve (02) is connected with the first joint (011) of the lifting oil cylinder (01), and the thirty-second joint (123) of the gear oil pump (12) is connected with the thirty-third joint (131) of the hydraulic oil tank (13). The pneumatic control reversing valve (02) is installed on the hydraulic oil tank (13) and connected with the thirty-fourth joint (132) of the hydraulic oil tank (13). The pneumatic control reversing valve (02), the control air valve (03) and the limiting air valve (04) are connected through air pipes and air pipe joints. The seventh joint (031) of the control air valve (03) is connected with the eleventh joint (041) of the limiting air valve (04), the ninth joint (033) of the control air valve (03) is connected with the twelfth joint (042) of the limiting air valve (04), the tenth joint (034) of the control air valve (03) is connected with the fifth joint (024) of the pneumatic control reversing valve (02), the fourth joint (023) of the pneumatic control reversing valve (02) is connected with the thirteenth joint (043) of the limiting air valve (04), and the eighth joint (032) of the control air valve (03) is connected with the twenty-seventh joint (092) of the normally closed limiting valve (09). By operating the control air valve (03), the lifting oil cylinder (01), the pneumatic control reversing valve (02) and the limiting air valve (04) are linked, and finally the lifting, stopping and descending of the vehicle compartment are realized. The rear door lifting control device is composed of a rear door lifting oil cylinder (05), a double-control multi-way valve (06), a lifting remote controller (07) and a gear oil pump (12); the rear door lifting oil cylinder (05), the double-control multi-way valve (06) and the gear oil pump (12) are connected through oil pipes; the sixteenth joint (061) of the double-control multi-way valve (06) is connected with the thirty-first joint (122) of the gear oil pump (12), the eighteenth joint (063) of the double-control multi-way valve (06) is connected with the fourteenth joint (051) of the rear door lifting oil cylinder (05), the nineteenth joint (064) of the double-control multi-way valve (06) is connected with the fifteenth joint (052) of the rear door lifting oil cylinder (05), and the seventeenth joint (062) of the double-control multi-way valve (06) is connected with the sixth joint (025) of the pneumatic reversing valve (02); the double-control multi-way valve (06) and the lifting remote controller (07) are connected through wires; the twenty-second joint (071) of the lifting remote controller (07) is connected with the thirty-fifth joint (A) of the double-control multi-way valve (06), the twenty-third joint (072) of the lifting remote controller (07) is connected with the thirty-sixth joint (B) of the double-control multi-way valve (06), the thirty-seventh joint (C) and the thirty-eighth joint (D) of the double-control multi-way valve (06) are connected with the twenty-seventh joint (092) of the normally closed limiting valve (09); by operating the lifting remote controller (07), the linkage of the rear door lifting oil cylinder (05), the double-control multi-way valve (06) and the gear oil pump (12) is realized, and finally the lifting and lowering of the rear door are realized. The rear door locking control device is composed of a rear door locking oil cylinder (08), a double-control multi-way valve (06), a normally closed limiting valve (09) and a locking remote controller (10); the rear door locking oil cylinder (08) and the double-control multi-way valve (06) are connected through oil pipes; the twenty-fourth joint (081) of the rear door locking oil cylinder (08) is connected with the twentieth joint (065) of the double-control multi-way valve (06), and the twenty-fifth joint (082) of the rear door locking oil cylinder (08) is connected with the twenty-first joint (066) of the double-control multi-way valve (06); the double-control multi-way valve (06) and the locking remote controller (10) are connected through wires; the twenty-eighth joint (101) of the locking remote controller (10) is connected with the thirty-ninth joint (E) of the double-control multi-way valve (06), and the twenty-ninth joint (102) of the locking remote controller (10) is connected with the fortieth joint (F) of the double-control multi-way valve (06); the forty-first joint (G) and the forty-second joint (H) of the double-control multi-way valve (06) are connected with the forty-third joint (111) of the main vehicle gas source (11); the twenty-sixth joint (091) of the normally closed limiting valve (09) is connected with the forty-third joint (111) of the main vehicle gas source (11); the locking remote controller (10) is operated to realize the linkage of the rear door locking oil cylinder (08) and the double-control multi-way valve (06), and finally realize the locking and loosening of the rear door; the normally closed limiting valve (09) is installed on the rear door locking oil cylinder (08), and the normally closed limiting valve (09) is controlled by the locking and loosening of the rear door locking oil cylinder (08); when the rear door locking oil cylinder (08) locks the rear plate, the normally closed limiting valve (09) is in a closed state; when the rear door locking oil cylinder (08) loosens the rear plate, the normally closed limiting valve (09) is in an open state.

2. A control system for a dump truck as defined in claim 1, wherein The gas source of the rear door locking control device is the main vehicle gas source (11) from the chassis; the gas sources of the rear door lifting control device and the vehicle compartment lifting control device are the gas sources controlled by the normally closed limiting valve (09).

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