A hydraulic control system for outriggers and cable reels of an electric engineering vehicle

Abstract

This utility model discloses a hydraulic control system for the outriggers and cable reel of an electric engineering vehicle, including a hydraulic control system power supply, a local / remote control selection knob, a remote control unit, a local operation knob unit, a relay unit, and a solenoid valve unit. The hydraulic control system power supply is connected to both the local / remote control selection knob and the relay unit. The local / remote control selection knob is connected to both the remote control unit and the local operation knob unit. Both the remote control unit and the local operation knob unit are connected to the relay unit. The relay unit is connected to the solenoid valve unit. The solenoid valve unit is connected to both the hydraulic outrigger unit and the hydraulic reel unit of the electric engineering vehicle. The advantages of this utility model include: simple assembly, neat wiring, stable performance, low failure rate, convenient maintenance, and quick problem solving; convenient operation with multiple operation modes, allowing for both remote control and local manual control.

Description

Technical Field

[0001] This utility model relates to the field of electric engineering vehicle technology, specifically to a hydraulic control system for outriggers and cable reels of electric engineering vehicles. Background Technology

[0002] In existing technologies, the output signals of the cable reel and outrigger control system of electric engineering vehicles are fixed, but the input signals are numerous. Furthermore, there is no corresponding program to determine the combination of inputs and outputs; instead, control outputs are established by associating them with electrical components such as relays or diodes. This leads to a large number and complexity of wiring and component connections, resulting in messy wiring and difficult assembly. Moreover, under immature electrical design and manufacturing processes, abnormal circuit signal continuity can easily occur, affecting the operation and stability of the entire hydraulic system. Utility Model Content

[0003] The purpose of this utility model is to provide a hydraulic control system for the outriggers and cable reels of an electric engineering vehicle that is simple to assemble, has a neat circuit, and a low failure rate, in order to solve the technical problems existing in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A hydraulic control system for outriggers and cable reels of an electric engineering vehicle includes a hydraulic control system power supply, a local / remote control selector knob, a remote control unit, a local operation knob unit, a relay unit, and a solenoid valve unit. The hydraulic control system power supply is connected to the local / remote control selector knob and the relay unit. The local / remote control selector knob is connected to the remote control unit and the local operation knob unit. The remote control unit and the local operation knob unit are both connected to the relay unit. The relay unit is connected to the solenoid valve unit. The solenoid valve unit is connected to the hydraulic outrigger unit and the hydraulic reel unit of the electric engineering vehicle. The hydraulic outrigger unit includes a left front outrigger, a right front outrigger, a left rear outrigger, and a right rear outrigger. The hydraulic reel unit includes an upper reel and a lower reel.

[0005] Furthermore, it also includes an emergency stop switch, one end of which is connected to the power supply of the hydraulic control system, and the other end is connected to the local / remote control selection knob and the relay unit respectively.

[0006] Furthermore, it also includes a hydraulic control system power indicator light, one end of which is connected to the hydraulic control system power supply, and the other end is connected to the emergency stop switch, the local / remote selection knob, and the relay unit respectively.

[0007] Furthermore, it also includes a hydraulic control box, in which the power supply and relay units of the hydraulic control system are all located inside the hydraulic control box, and the emergency stop switch, the power indicator light of the hydraulic control system, the local / remote selection knob and the local operation knob unit are all embedded on the surface of the hydraulic control box.

[0008] Furthermore, the hydraulic control box includes a sealed housing and a sealed cover. The power supply and relay unit of the hydraulic control system are both located inside the sealed housing. The emergency stop switch, the power indicator light of the hydraulic control system, the local / remote selection knob, and the local operation knob unit are all embedded on the surface of the sealed cover. The sealed housing is also provided with a remote control input interface and a solenoid valve control output interface. The remote control input interface is connected to the remote control unit, and the solenoid valve control output interface is connected to the solenoid valve unit.

[0009] Furthermore, the remote control unit includes a remote control transmitter and a remote control receiver. The remote control transmitter and the remote control receiver are communicatively connected, and the remote control receiver is electrically connected to the remote control input interface on the hydraulic control box. The remote control transmitter is equipped with control buttons for remotely raising the left front outrigger, lowering the left front outrigger, raising the right front outrigger, lowering the right front outrigger, raising the left rear outrigger, lowering the left rear outrigger, raising the right rear outrigger, lowering the right rear outrigger, and controlling the simultaneous raising and lowering of all outriggers. The system includes controls for simultaneously raising and lowering outriggers, simultaneously lowering and lowering outriggers, remotely controlling the upper reel to rewind, remotely controlling the upper reel to unwind, remotely controlling the lower reel to rewind, and remotely controlling the lower reel to unwind. Furthermore, the controls for raising and lowering the left front outrigger, raising and lowering the right front outrigger, raising and lowering the left rear outrigger, raising and lowering the right rear outrigger, raising and lowering the right rear outrigger, raising and lowering the outriggers simultaneously, raising and lowering the outriggers simultaneously, raising and lowering the upper reel, raising and lowering the upper reel, raising and lowering the lower reel, and unwinding the lower reel are all connected to the local / remote control knob.

[0010] Furthermore, the local operation knob unit includes a left front outrigger rise / fall selection knob, a right front outrigger rise / fall selection knob, a left rear outrigger rise / fall selection knob, a right rear outrigger rise / fall selection knob, a simultaneous outrigger rise / fall selection knob, an upper reel wind-up / unwind selection knob, and a lower reel wind-up / unwind selection knob; and the left front outrigger rise / fall selection knob, right front outrigger rise / fall selection knob, left rear outrigger rise / fall selection knob, right rear outrigger rise / fall selection knob, simultaneous outrigger rise / fall selection knob, upper reel wind-up / unwind selection knob, and lower reel wind-up / unwind selection knob are all connected to the local / remote control selection knob.

[0011] Furthermore, the relay unit includes a left front outrigger raising relay, a left front outrigger lowering relay, a right front outrigger raising relay, a right front outrigger lowering relay, a left rear outrigger raising relay, a left rear outrigger lowering relay, a right rear outrigger raising relay, a right rear outrigger lowering relay, an outrigger raising relay, an outrigger lowering relay, an upper reel take-up relay, an upper reel unload relay, a lower reel take-up relay, and a lower reel unload relay. The solenoid valve unit includes a left front outrigger solenoid valve, a right front outrigger solenoid valve, a left rear outrigger solenoid valve, a right rear outrigger solenoid valve, an outrigger raising solenoid valve, an outrigger lowering solenoid valve, an upper reel winding solenoid valve, an upper reel unwinding solenoid valve, a lower reel winding solenoid valve, a lower reel unwinding solenoid valve, and an unloading solenoid valve. The three sets of normally open contacts of the left front outrigger raising relay, the three sets of normally open contacts of the left front outrigger lowering relay, the three sets of normally open contacts of the right front outrigger raising relay, the three sets of normally open contacts of the right front outrigger lowering relay, the three sets of normally open contacts of the left rear outrigger raising relay, the three sets of normally open contacts of the left rear outrigger lowering relay, the three sets of normally open contacts of the right rear outrigger raising relay, the three sets of normally open contacts of the right rear outrigger lowering relay, the four sets of normally open contacts of the outrigger raising relay, the four sets of normally open contacts of the outrigger lowering relay, the two sets of normally open contacts of the upper reel take-up relay, the two sets of normally open contacts of the upper reel unwinding relay, the two sets of normally open contacts of the lower reel take-up relay, and the two sets of normally open contacts of the lower reel unwinding relay are all connected at one end to the emergency stop switch. The other end of the three normally open contacts of the left front outrigger raising relay is connected to the outrigger raising solenoid valve, the left front outrigger solenoid valve and the unloading solenoid valve respectively; the coil of the left front outrigger raising relay is connected to the left front outrigger raising control key and the left front outrigger raising / lowering selection knob switch respectively. The other end of the three normally open contacts of the left front outrigger lowering relay is connected to the outrigger lowering solenoid valve, the left front outrigger solenoid valve and the unloading solenoid valve respectively; the coil of the left front outrigger lowering relay is connected to the left front outrigger lowering control key and the left front outrigger raising / lowering selection knob switch respectively. The other end of the three normally open contacts of the right front outrigger raising relay is connected to the outrigger raising solenoid valve, the right front outrigger solenoid valve and the unloading solenoid valve respectively; the coil of the right front outrigger raising relay is connected to the right front outrigger raising control key and the right front outrigger raising / lowering selection knob switch respectively. The other end of the three normally open contacts of the right front outrigger lowering relay is connected to the outrigger lowering solenoid valve, the right front outrigger solenoid valve and the unloading solenoid valve respectively; the coil of the right front outrigger lowering relay is connected to the right front outrigger lowering control key and the right front outrigger raising / lowering selection knob switch respectively. The other end of the three normally open contacts of the left rear outrigger raising relay is connected to the outrigger raising solenoid valve, the left rear outrigger solenoid valve and the unloading solenoid valve respectively; the coil of the left rear outrigger raising relay is connected to the left rear outrigger raising control key and the left rear outrigger raising / lowering selection knob switch respectively. The other end of the three normally open contacts of the left rear outrigger lowering relay is connected to the outrigger lowering solenoid valve, the left rear outrigger solenoid valve and the unloading solenoid valve respectively; the coil of the left rear outrigger lowering relay is connected to the left rear outrigger lowering control key and the left rear outrigger raising / lowering selection knob switch respectively. The other end of the three normally open contacts of the right rear outrigger raising relay is connected to the outrigger raising solenoid valve, the right rear outrigger solenoid valve and the unloading solenoid valve respectively; the coil of the right rear outrigger raising relay is connected to the right rear outrigger raising control key and the right rear outrigger raising / lowering selection knob switch respectively. The other end of the three normally open contacts of the right rear outrigger lowering relay is connected to the outrigger lowering solenoid valve, the right rear outrigger solenoid valve and the unloading solenoid valve respectively; the coil of the right rear outrigger lowering relay is connected to the right rear outrigger lowering control key and the right rear outrigger raising / lowering selection knob switch respectively. The other end of the four normally open contacts of the outrigger simultaneous raising relay is connected to the coils of the left front outrigger raising relay, the right front outrigger raising relay, the left rear outrigger raising relay, and the right rear outrigger raising relay, respectively; the coils of the outrigger simultaneous raising relay are connected to the outrigger simultaneous raising control key and the outrigger simultaneous raising / lowering selection knob switch, respectively. The other end of the four normally open contacts of the outrigger lowering relay is connected to the coils of the left front outrigger lowering relay, the right front outrigger lowering relay, the left rear outrigger lowering relay, and the right rear outrigger lowering relay, respectively; the coils of the outrigger lowering relay are connected to the outrigger lowering control key and the outrigger raising / lowering selection knob switch, respectively. The other ends of the two normally open contacts of the upper reel take-up relay are respectively connected to the upper reel take-up solenoid valve and the unloading solenoid valve; the coil of the upper reel take-up relay is respectively connected to the upper reel take-up control key and the upper reel take-up / unwind selection knob switch. The other ends of the two normally open contacts of the upper reel unwinding relay are respectively connected to the upper reel unwinding solenoid valve and the unloading solenoid valve; the coil of the upper reel unwinding relay is respectively connected to the upper reel unwinding control key and the upper reel winding / unwinding selection knob switch. The other ends of the two normally open contacts of the lower reel take-up relay are respectively connected to the lower reel take-up solenoid valve and the unloading solenoid valve; the coil of the lower reel take-up relay is respectively connected to the lower reel take-up control key and the lower reel take-up / unwind selection knob switch. The other ends of the two normally open contacts of the lower reel unwinding relay are respectively connected to the lower reel unwinding solenoid valve and the unloading solenoid valve; the coil of the lower reel unwinding relay is respectively connected to the lower reel unwinding control key and the lower reel winding / unwinding selection knob switch.

[0012] Furthermore, it also includes an outrigger non-retraction detection unit, which includes a left front outrigger limit switch, a right front outrigger limit switch, a left rear outrigger limit switch, and a right rear outrigger limit switch respectively located at the ends of the left front outrigger, right front outrigger, left rear outrigger, and right rear outrigger. The left front outrigger limit switch, right front outrigger limit switch, left rear outrigger limit switch, and right rear outrigger limit switch are all connected to the outrigger non-retraction alarm indicator light installed in the cab of the electric engineering vehicle and the normally open contact of the chassis ON position signal relay installed on the chassis of the electric engineering vehicle. The coil of the chassis ON position signal relay is connected to the ON position signal chassis key switch installed in the cab of the electric engineering vehicle.

[0013] Compared with the prior art, the advantages of this utility model are as follows: (1) The assembly is simple. Each component can be purchased in a modular manner and connected quickly using assembly connectors, which can greatly simplify the assembly process and significantly improve the installation efficiency. (2) The circuit is well-organized, the performance is stable, and the failure rate is significantly reduced; (3) Easy to maintain, modular replacement is possible during maintenance, and problems can be solved quickly; (4) It has multiple operation modes, including both remote control and local manual control; (5) Easy to operate; simply operate the corresponding knob to perform the corresponding action. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the description of the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1This is a block diagram illustrating the working principle of the hydraulic control system for the outriggers and cable reel of the electric engineering vehicle provided by this utility model. Figure 2 This is a schematic diagram showing the connection between the remote control unit and the hydraulic control box in a specific embodiment of the hydraulic control system for the outriggers and cable reels of the electric engineering vehicle provided by this utility model. Figure 3 yes Figure 2 A front view of the remote control transmitter of the remote control unit involved in the process; Figure 4 yes Figure 2 Top view of the external structure of the hydraulic control box involved; Figure 5 yes Figure 2 Top view of the internal structure of the hydraulic control box involved; Figure 6 This is a hydraulic circuit diagram of a specific embodiment of the hydraulic control system for the outriggers and cable reel of the electric engineering vehicle provided by this utility model. Figures 6a-6c yes Figure 6 A magnified view of a portion of the image; Figures 7-9 This is a hydraulic and electrical schematic diagram of a specific embodiment of the hydraulic control system for the outriggers and cable reel of the electric engineering vehicle provided by this utility model. Explanation of reference numerals in the attached diagram: 1. Hydraulic control system power supply; 2. Emergency stop switch; 3. Hydraulic control system power indicator light; 4. Local / remote control selection knob; 5. Remote control unit; 6. Local operation knob unit; 7. Relay unit; 8. Solenoid valve unit; 9. Hydraulic control box; 10. Outrigger not retracted detection unit; 11. Outrigger not retracted alarm indicator light; 12. ON position signal chassis key switch; 13. Hydraulic outrigger unit; 1301. Left front outrigger; 1302. Right front outrigger; 1303. Left rear outrigger; 1304. Right rear outrigger; 14. Hydraulic reel unit; 1401. Upper reel; 1402. Lower reel; 15. Hydraulic oil pump; 16. Hydraulic oil tank. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] The present invention will be further described below with reference to the accompanying drawings: See Figure 1This utility model provides a hydraulic control system for the outriggers and cable reel of an electric engineering vehicle, including a hydraulic control system power supply 1, a local / remote control selection knob 4, a remote control unit 5, a local operation knob unit 6, a relay unit 7, and a solenoid valve unit 8. The hydraulic control system power supply 1 is connected to the local / remote control selection knob 4 and the relay unit 7. The local / remote control selection knob 4 is connected to the remote control unit 5 and the local operation knob unit 6. The remote control unit 5 and the local operation knob unit 6 are both connected to the relay unit 7. The relay unit 7 is connected to the solenoid valve unit 8. The solenoid valve unit 8 is connected to the power supply unit 1, the local / remote control selection knob 4, the local control unit 5, the local operation knob unit 6, the relay unit 7, and the solenoid valve unit 8. The hydraulic outrigger unit 13 and hydraulic reel unit 14 of the power engineering vehicle are connected. The hydraulic outrigger unit 13 includes a left front outrigger 1301, a right front outrigger 1302, a left rear outrigger 1303, and a right rear outrigger 1304, which are used to support the chassis of the power engineering vehicle. The hydraulic reel unit 14 includes an upper reel 1401 and a lower reel 1402, which are used to realize the functions of cable retraction and cable release, respectively. The remote control unit 1 and the local control knob unit 2 are both used to operate the relay unit 3. The relay unit 3 is used to drive the solenoid valve unit 4 to realize the control of the hydraulic outrigger unit 13 and the hydraulic reel unit 14 of the power engineering vehicle.

[0021] Specifically, the left front outrigger 1301, right front outrigger 1302, left rear outrigger 1303 and right rear outrigger 1304 are all hydraulic outriggers, which can be raised and lowered by hydraulic control; the upper reel 1401 and lower reel 1402 are both hydraulic reels, which can also be wound and unwound by hydraulic control.

[0022] Specifically, in some embodiments, the hydraulic control system for the outriggers and cable reel of the electric engineering vehicle provided by this utility model is described in reference [link to relevant documentation]. Figure 7 It also includes an emergency stop switch 2, one end of which is connected to the hydraulic control system power supply 1, and the other end is connected to the local / remote control selection knob 4 and the relay unit 7, respectively. The emergency stop switch 2 is used to disconnect the hydraulic control system power supply 1 from the local / remote control selection knob 4 and the relay unit 7 in case of emergency (such as equipment failure or personnel being in danger).

[0023] Specifically, in some embodiments, the hydraulic control system for the outriggers and cable reel of the electric engineering vehicle provided by this utility model is described in reference [link to relevant documentation]. Figure 7 It also includes a hydraulic control system power indicator light 3, which is connected to the hydraulic control system power supply 1, and its other end is connected to the emergency stop switch 2, the local / remote selection knob 4, and the relay unit 7, respectively. The hydraulic control system power indicator light 3 is used to indicate whether the hydraulic control system power supply 1 is on or off.

[0024] Specifically, in some embodiments, the hydraulic control system for the outriggers and cable reel of the electric engineering vehicle provided by this utility model is described in reference [link to relevant documentation]. Figure 2 , Figure 4 and Figure 5 The system also includes a hydraulic control box 9, with the hydraulic control system power supply 1 and relay unit 7 all housed inside. An emergency stop switch 2, a hydraulic control system power indicator light 3, a local / remote selection knob 4, and a local operation knob unit 6 are all embedded on the surface of the hydraulic control box 9. The hydraulic control system power supply 1 provides power to the entire hydraulic control system of the outriggers and cable reels of the electric engineering vehicle; the hydraulic control system power indicator light 3 indicates the energized status of the entire hydraulic control system of the outriggers and cable reels; the local / remote selection knob 4 selects between remote and local modes; the local operation knob unit 6 controls the operation of each hydraulic actuator (i.e., each solenoid valve) locally; the relay unit 7 collects remote and local input command signals, performs logic control, and outputs command signals to control the lifting and lowering of each outrigger and the winding and unwinding of each reel; the hydraulic control box 9 serves as a carrier for the hydraulic control system power supply 1, emergency stop switch 2, hydraulic control system power indicator light 3, local / remote selection knob 4, local operation knob unit 6, and relay unit 7, and also provides waterproof and dustproof protection for the hydraulic control system power supply 1 and relay unit 7.

[0025] Specifically, as an optional embodiment of the hydraulic control box 9: see Figure 4 and Figure 5 The hydraulic control box 9 includes a sealed housing 901 and a sealed cover 902. One side of the sealed cover 902 is connected to the sealed housing 901 via a hinge 905, and the other side is connected to the sealed housing 901 via a latch 506. The hydraulic control system power supply 1 and relay unit 7 are both located inside the sealed housing 901. The emergency stop switch 2, the hydraulic control system power indicator light 3, the local / remote control selection knob 4, and the local operation knob unit 6 are all embedded on the surface of the sealed cover 902. The sealed housing 901 is also provided with a remote control input interface 903 and a solenoid valve control output interface 904. The remote control input interface 903 is connected to the remote control unit 5 and is used to receive the action signal of the remote control unit 5. The solenoid valve control output interface 904 is connected to the solenoid valve unit 8 and is used to transmit the output signal to the solenoid valve unit 8 to realize the corresponding action.

[0026] Specifically, as an optional embodiment of the remote control unit 5: see Figure 2 The remote control unit 5 includes a remote control transmitter 501 and a remote control receiver 502. The remote control transmitter 501 and the remote control receiver 502 are communicatively connected, and the remote control receiver 502 is electrically connected to the remote control input interface 903 on the hydraulic control box 5. The remote control unit 5 is preferably a Yuding industrial remote controller, model number MODEL NO:F24-14S (24V).

[0027] More specifically, in the optional embodiment of the remote control unit 5 described above, see [reference] Figure 3 The remote transmitter 501 is equipped with a left front outrigger raising control key 501A for remotely raising the left front outrigger 1301, a left front outrigger lowering control key 501B for remotely lowering the left front outrigger 1301, a right front outrigger raising control key 501C for remotely raising the right front outrigger 1302, a right front outrigger lowering control key 501D for remotely lowering the right front outrigger 1302, and a left rear outrigger raising control key for remotely raising the left rear outrigger 1303. 501E, Left rear outrigger descent control key for remotely lowering the left rear outrigger 1303; 501F, Right rear outrigger ascent control key for remotely raising the right rear outrigger 1304; 501G, Right rear outrigger descent control key for remotely lowering the right rear outrigger 1304; 501H, Simultaneous outrigger ascent control key for remotely raising all outriggers; 501I, Simultaneous outrigger ascent control key for remotely lowering all outriggers; 501J, Control key for remotely lowering the upper reel 14. 01. The upper reel rewind control key 501K for remotely controlling the upper reel 1401 to unwind; the lower reel rewind control key 501M for remotely controlling the lower reel 1402 to rewind; and the lower reel unwind control key 501N for remotely controlling the lower reel 1402 to unwind; and the left front outrigger raise control key 501A, the left front outrigger lower control key 501B, the right front outrigger raise control key 501C, and the right front outrigger lower control key 501N. 1D, the left rear outrigger raise control key 501E, the left rear outrigger lower control key 501F, the right rear outrigger raise control key 501G, the right rear outrigger lower control key 501H, the outrigger raise control key 501I, the outrigger lower control key 501J, the upper reel rewind control key 501K, the upper reel unwind control key 501L, the lower reel rewind control key 501M, and the lower reel unwind control key 501N are all connected to the local / remote control knob 4.

[0028] When the local / remote control knob 4 is in remote control mode, press the following buttons respectively: left front outrigger raise control 501A, left front outrigger lower control 501B, right front outrigger raise control 501C, right front outrigger lower control 501D, left rear outrigger raise control 501E, left rear outrigger lower control 501F, right rear outrigger raise control 501G, right rear outrigger lower control 501H, simultaneous outrigger raise control 501I, simultaneous outrigger lower control 501J, upper reel winding control 501K, and upper reel unwind control. When the key 501L, the lower reel rewind control key 501M, and the lower reel unwind control key 501N are used, the left front support leg 1301 can be raised, the left front support leg 1301 can be lowered, the right front support leg 1302 can be raised, the right front support leg 1302 can be lowered, the left rear support leg 1303 can be raised, the left rear support leg 1303 can be lowered, the right rear support leg 1304 can be raised, the right rear support leg can be lowered, all support legs can be raised simultaneously, all support legs can be lowered simultaneously, the upper reel 1401 can be rewound, the upper reel 1402 can be unwound, the lower reel 1402 can be rewound, and the lower reel 1402 can be unwound.

[0029] Specifically, as an optional embodiment of the local operation knob unit 6: see [link to relevant documentation] Figure 4The local operation knob unit 6 includes a left front outrigger rise / fall selection knob 601, a right front outrigger rise / fall selection knob 602, a left rear outrigger rise / fall selection knob 603, a right rear outrigger rise / fall selection knob 604, a simultaneous outrigger rise / fall selection knob 605, an upper reel wind-up / unwind selection knob 606, and a lower reel wind-up / unwind selection knob 607; and the left front outrigger rise / fall selection knob 601, the right front outrigger rise / fall selection knob 602, the left rear outrigger rise / fall selection knob 603, the right rear outrigger rise / fall selection knob 604, the simultaneous outrigger rise / fall selection knob 605, the upper reel wind-up / unwind selection knob 606, and the lower reel wind-up / unwind selection knob 607 are all connected to the local / remote control selection knob 4. The local / remote control knob 4 allows the hydraulic control system for the outriggers and reel provided by this invention to freely switch between remote control and local control modes; the left front outrigger raise / lower selector switch 601 controls the left front outrigger 1301 to switch between raising and lowering modes; the right front outrigger raise / lower selector switch 602 controls the right front outrigger 1302 to switch between raising and lowering modes; the left rear outrigger raise / lower selector switch 603 controls the left rear outrigger 1303 to switch between raising and lowering modes; and the right rear outrigger raise / lower selector switch... The rotary switch 604 is used to control the right rear outrigger 1304 to switch between rising and falling states; the outrigger simultaneous rise / fall selection rotary switch 605 is used to control all outriggers (including the left front outrigger 1301, right front outrigger 1302, left rear outrigger 1303 and right rear outrigger 1304) to switch between rising and falling states; the upper reel winding / unwinding selection rotary switch 606 is used to control the upper reel 1401 to switch between winding and unwinding states; the lower reel winding / unwinding selection rotary switch 607 is used to control the lower reel 1402 to switch between winding and unwinding states.

[0030] More specifically, the left front outrigger raise / lower selector knob 601, the right front outrigger raise / lower selector knob 602, the left rear outrigger raise / lower selector knob 603, the right rear outrigger raise / lower selector knob 604, the outrigger raise / lower selector knob 605, the upper reel windup / unwind selector knob 606, and the lower reel windup / unwind selector knob 607 are all three-position self-resetting knobs; the local / remote selector knob 4 is a two-position self-locking knob.

[0031] Specifically, as an optional embodiment of relay unit 7: see Figure 5The relay unit 7 includes a left front outrigger raising relay 701, a left front outrigger lowering relay 702, a right front outrigger raising relay 703, a right front outrigger lowering relay 704, a left rear outrigger raising relay 705, a left rear outrigger lowering relay 706, a right rear outrigger raising relay 707, a right rear outrigger lowering relay 708, a simultaneous outrigger raising relay 709, a simultaneous outrigger lowering relay 710, an upper reel take-up relay 711, an upper reel unwinding relay 712, a lower reel take-up relay 713, and a lower reel unwinding relay 714; among which, the left front outrigger raising relay 701... 01. The left front outrigger lowering relay 702, the right front outrigger raising relay 703, the right front outrigger lowering relay 704, the left rear outrigger raising relay 705, the left rear outrigger lowering relay 706, the right rear outrigger raising relay 707, the right rear outrigger lowering relay 708, the outrigger raising relay 709, and the outrigger lowering relay 710 all have four sets of normally open contacts and four sets of normally closed contacts; the upper reel take-up relay 711, the upper reel unload relay 712, the lower reel take-up relay 713, and the lower reel unload relay 714 all have two sets of normally open contacts and two sets of normally closed contacts.

[0032] More specifically, the left front outrigger raising relay 701, left front outrigger lowering relay 702, right front outrigger raising relay 703, right front outrigger lowering relay 704, left rear outrigger raising relay 705, left rear outrigger lowering relay 706, right rear outrigger raising relay 707, right rear outrigger lowering relay 708, outrigger raising relay 709, and outrigger lowering relay 710 are preferably Shanghai Tianyi TRK4L-D24 relays; the upper reel take-up relay 711, upper reel unload relay 712, lower reel take-up relay 713, and lower reel unload relay 714 are preferably Shanghai Tianyi TRE2L-D24 relays.

[0033] Specifically, as an optional embodiment of relay unit 8: see Figure 6 The solenoid valve unit 8 includes a left front outrigger solenoid valve 801, a right front outrigger solenoid valve 802, a left rear outrigger solenoid valve 803, a right rear outrigger solenoid valve 804, an outrigger raising solenoid valve 805, an outrigger lowering solenoid valve 806, an upper reel winding solenoid valve 807, an upper reel unwinding solenoid valve 808, a lower reel winding solenoid valve 809, a lower reel unwinding solenoid valve 810, and an unloading solenoid valve 811. See Figures 6a to 6cThe oil outlets b of the left front outrigger solenoid valve 801, right front outrigger solenoid valve 802, left rear outrigger solenoid valve 803, and right rear outrigger solenoid valve 804 are respectively connected to the working oil ports A of the left front outrigger 1301, right front outrigger 1302, left rear outrigger 1303, and right rear outrigger 1304 via hydraulic oil pipes. The left front outrigger solenoid valve 801, right front outrigger solenoid valve 802, left rear outrigger solenoid valve 803, and right rear outrigger solenoid valve 804 are respectively connected to the working oil ports A of the left front outrigger 1301, right front outrigger 1302, left rear outrigger 1303, and right rear outrigger solenoid valve 804. The oil inlet a of outrigger 04 is connected to the working oil port A of the outrigger raising solenoid valve 805 or the working oil port A of the outrigger lowering solenoid valve 806 via hydraulic oil pipes through the pressure holding circuit unit 812; the working oil ports B of the left front outrigger 1301, right front outrigger 1302, left rear outrigger 1303, and right rear outrigger 1304 are connected to the working oil port B of the outrigger raising solenoid valve 805 or the working oil port B of the outrigger lowering solenoid valve 806 via hydraulic oil pipes through the pressure holding circuit unit 812. The working port B of the outrigger lowering solenoid valve 806 is connected; the inlet P and outlet T of the outrigger raising solenoid valve 805, outrigger lowering solenoid valve 806, upper reel winding solenoid valve 807, upper reel unwinding solenoid valve 808, lower reel winding solenoid valve 809, lower reel unwinding solenoid valve 810, and unloading solenoid valve 811 are respectively connected to the hydraulic oil tank 16 via hydraulic oil pipes; the working ports A and B of the upper reel winding solenoid valve 807 and upper reel unwinding solenoid valve 808 are respectively connected to the upper reel 1401 via hydraulic oil pipes through the upper reel bidirectional speed regulating valve 813 (specifically, connected to the upper reel hydraulic motor); the working ports A and B of the lower reel winding solenoid valve 809 and lower reel unwinding solenoid valve 810 are respectively connected to the lower reel 1402 via hydraulic oil pipes through the lower reel bidirectional speed regulating valve 814 (specifically, connected to the lower reel hydraulic motor).

[0034] More specifically, in an optional embodiment of the aforementioned solenoid valve unit 8, an overflow valve 815 and a pressure gauge 816 are further included; wherein, the overflow valve 815 is connected in parallel between the oil inlet P and the oil return port T of the unloading solenoid valve 811; the pressure gauge 816 is installed on the oil inlet pipeline connecting the outrigger raising solenoid valve 805, the outrigger lowering solenoid valve 806, the upper reel winding solenoid valve 807, the upper reel unwinding solenoid valve 808, the lower reel winding solenoid valve 809, the lower reel unwinding solenoid valve 810, and the unloading solenoid valve 811 to the hydraulic oil tank 16, and is located on the oil inlet pipeline of the outrigger raising solenoid valve 805, the outrigger lowering solenoid valve 806, the upper reel winding solenoid valve 807, the upper reel unwinding solenoid valve 808, the lower reel winding solenoid valve 809, and the lower reel unwinding solenoid valve 811. A hydraulic oil pump 15 is also installed on the oil inlet pipe connecting the solenoid valve 810 and the unloading solenoid valve 811 to the hydraulic oil tank 16. This hydraulic oil pump 15 is connected to the engine of the electric engineering vehicle through a power take-off and draws power from the engine. When working, the hydraulic oil pump 15 is used to transport the hydraulic oil in the hydraulic oil tank 16 to the oil inlet pipe of the hydraulic control system of the outrigger and the reel, providing hydraulic power to the hydraulic outrigger unit 13 and the hydraulic reel 14, so that each outrigger in the hydraulic outrigger unit 13 performs the corresponding rising or falling action, and each reel in the hydraulic reel 14 performs the corresponding unwinding or winding action. In addition, the hydraulic oil tank 16 is also equipped with exhaust and filter pipes and a liquid level gauge, which are used for exhaust, filtration and liquid level detection functions, respectively.

[0035] More specifically, the above-mentioned solenoid valve unit 8 can be implemented in optional embodiments, see [link to relevant documentation]. Figure 6a The pressure holding circuit unit 812 consists of two check valves; see reference. Figure 6b Both the upper reel bidirectional speed control valve 813 and the lower reel bidirectional speed control valve 814 consist of two check valves and two throttle valve assemblies.

[0036] More specifically, in the above optional embodiments, see [reference] Figures 7 to 9 The three normally open contacts K1 of the left front outrigger raising relay 701, the three normally open contacts K2 of the left front outrigger lowering relay 702, the three normally open contacts K3 of the right front outrigger raising relay 703, the three normally open contacts K4 of the right front outrigger lowering relay 704, the three normally open contacts K5 of the left rear outrigger raising relay 705, the three normally open contacts K6 of the left rear outrigger lowering relay 706, the three normally open contacts K7 of the right rear outrigger raising relay 707, and the right rear outrigger lowering relay... The three normally open contacts K8 of the lowering relay 708, the four normally open contacts K9 of the outrigger simultaneous raising relay 709, the four normally open contacts K10 of the outrigger simultaneous lowering relay 710, the two normally open contacts K11 of the upper reel take-up relay 711, the two normally open contacts K12 of the upper reel unwinding relay 712, the two normally open contacts K13 of the lower reel take-up relay 713, and the two normally open contacts K14 of the lower reel unwinding relay 714 are all connected at one end to the emergency stop switch 2 (i.e., Figure 7 Connect the corresponding SJ in the middle.

[0037] More specifically, in the above optional embodiments, see [reference] Figures 7 to 9 The other end of the three normally open contacts K1 of the left front outrigger raising relay 701 is respectively connected to the outrigger raising solenoid valve 805 (i.e., Figure 8 The corresponding YV4B), left front outrigger solenoid valve 801 (i.e. Figure 8 The corresponding YV1) and unloading solenoid valve 811 (i.e. Figure 9 The coil KC1 of the left front outrigger raising relay 701 is connected to the left front outrigger raising control key 501A (i.e., YV1A); Figure 7 The corresponding SB1) and the left front outrigger rise / lower selection knob 601 (i.e. Figure 7 Connect the corresponding SA1 in the middle.

[0038] More specifically, in the above optional embodiments, see [reference] Figures 7 to 9 The other end of the three normally open contacts K2 of the left front outrigger lowering relay 702 is respectively connected to the outrigger lowering solenoid valve 806 (i.e. Figure 8 The corresponding YV4A), left front outrigger solenoid valve 801 (i.e. Figure 8 The corresponding YV1) and unloading solenoid valve 811 (i.e. Figure 9 The coil KC2 of the left front outrigger lowering relay 702 is connected to the left front outrigger lowering control key 501B (i.e., YV1A); Figure 7 The corresponding SB2) and the left front outrigger rise / lower selection knob 601 (i.e. Figure 7 Connect the corresponding SA1 in the middle.

[0039] More specifically, in the above optional embodiments, see [reference] Figures 7 to 9 The other end of the three normally open contacts K3 of the right front outrigger raising relay 703 is respectively connected to the outrigger raising solenoid valve 805 (i.e. Figure 8 The corresponding YV4B), right front outrigger solenoid valve 802 (i.e. Figure 8 The corresponding YV2) and unloading solenoid valve 811 (i.e. Figure 9 The coil KC3 of the right front outrigger raising relay 703 is connected to the right front outrigger raising control key 501C (i.e., YV1A). Figure 7 The corresponding SB3) and the right front outrigger rise / lower selection knob 602 (i.e. Figure 7 Connect the corresponding SA2 in the middle.

[0040] More specifically, in the above optional embodiments, see [reference] Figures 7 to 9 The other end of the three normally open contacts K4 of the right front outrigger lowering relay 704 is respectively connected to the outrigger lowering solenoid valve 806 (i.e. Figure 8The corresponding YV4A), right front outrigger solenoid valve 802 (i.e. Figure 8 The corresponding YV2) and unloading solenoid valve 811 (i.e. Figure 9 The coil KC4 of the right front outrigger lowering relay 704 is connected to the right front outrigger lowering control key 501D (i.e., YV1A); Figure 7 The corresponding SB4) and the right front outrigger rise / lower selection knob 602 are connected (i.e. Figure 7 (corresponding to SA2 in the middle).

[0041] More specifically, in the above-described optional embodiments, see [reference] Figures 7 to 9 The other end of the three normally open contacts K5 of the left rear outrigger raising relay 705 is respectively connected to the outrigger raising solenoid valve 805 (i.e. Figure 8 The corresponding YV4B), and the left rear outrigger solenoid valve 803 (i.e. Figure 8 The corresponding YV3) and unloading solenoid valve 811 (i.e. Figure 9 The coil KC5 of the left rear outrigger raising relay 705 is connected to the left rear outrigger raising control key 501E (i.e., YV1A). Figure 7 The corresponding SB5) and the left rear outrigger raise / lower selection knob 603 (i.e. Figure 7 Connect the corresponding SA3 in the middle.

[0042] More specifically, in the above optional embodiments, see [reference] Figures 7 to 9 The other end of the three normally open contacts K6 of the left rear outrigger lowering relay 706 is respectively connected to the outrigger lowering solenoid valve 806 (i.e. Figure 8 The corresponding YV4A), and the left rear outrigger solenoid valve 803 (i.e. Figure 8 The corresponding YV3) and unloading solenoid valve 811 (i.e. Figure 9 The coil KC6 of the left rear outrigger lowering relay 706 is connected to the left rear outrigger lowering control key 501F (i.e., YV1A); Figure 7 The corresponding SB6) and the left rear outrigger rise / lower selection knob 603 (i.e. Figure 7 Connect the corresponding SA3 in the middle.

[0043] More specifically, in the above optional embodiments, see [reference] Figures 7 to 9 The other end of the three normally open contacts K7 of the right rear outrigger raising relay 707 is respectively connected to the outrigger raising solenoid valve 805 (i.e. Figure 8 The corresponding YV4B), right rear outrigger solenoid valve 804 (i.e. Figure 8 The corresponding YV4) and unloading solenoid valve 811 (i.e. Figure 9 The coil KC7 of the right rear outrigger raising relay 707 is connected to the right rear outrigger raising control key 501G (i.e., YV1A). Figure 7The corresponding SB7) and the right rear outrigger ascend / descend selection knob 604 (i.e. Figure 7 Connected to the corresponding SA4 in the middle.

[0044] More specifically, in the above optional embodiments, see [reference] Figures 7 to 9 The other end of the three normally open contacts K8 of the right rear outrigger lowering relay 708 is respectively connected to the outrigger lowering solenoid valve 806 (i.e. Figure 8 The corresponding YV4A), right rear outrigger solenoid valve 804 (i.e. Figure 8 The corresponding YV4) and unloading solenoid valve 811 (i.e. Figure 9 The coil KC8 of the right rear outrigger lowering relay 708 is connected to the right rear outrigger lowering control key 501H (i.e., YV1A). Figure 7 The corresponding SB8) and the right rear outrigger ascend / descend selection knob 604 (i.e. Figure 7 Connected to the corresponding SA4 in the middle.

[0045] More specifically, in the above optional embodiments, see [reference] Figure 7 The other ends of the four normally open contacts K9 of the outrigger simultaneous raising relay 709 are respectively connected to the coil KC1 of the left front outrigger raising relay 701, the coil KC3 of the right front outrigger raising relay 703, the coil KC5 of the left rear outrigger raising relay 705, and the coil KC6 of the right rear outrigger raising relay 707; the coil KC9 of the outrigger simultaneous raising relay 709 is respectively connected to the outrigger simultaneous raising control key 501I (i.e. Figure 7 The corresponding SB9) and the outrigger simultaneous rise / fall selection knob 605 (i.e. Figure 7 Connect the corresponding SA5 in the middle.

[0046] More specifically, in the above optional embodiments, see [reference] Figure 7 The other ends of the four normally open contacts K10 of the outrigger simultaneous lowering relay 710 are respectively connected to the coil KC2 of the left front outrigger lowering relay 702, the coil KC4 of the right front outrigger lowering relay 704, the coil KC6 of the left rear outrigger lowering relay 706, and the coil KC8 of the right rear outrigger lowering relay 708; the coil KC10 of the outrigger simultaneous lowering relay 710 is respectively connected to the outrigger simultaneous lowering control key 501J (i.e., Figure 7 The corresponding SB10) and the outrigger simultaneous rise / fall selection knob 605 (i.e. Figure 7 Connect the corresponding SA5 in the middle.

[0047] More specifically, in the above optional embodiments, see [reference] Figure 8 and Figure 9 The other ends of the two normally open contacts K11 of the upper reel take-up relay 711 are respectively connected to the upper reel take-up solenoid valve 807 (i.e., Figure 9The corresponding YV2A) and unloading solenoid valve 811 (i.e. Figure 9 The coil KC11 of the upper reel take-up relay 711 is connected to the upper reel take-up control key 501K (i.e., the corresponding YV1A); Figure 8 The corresponding SB11) and the upper reel winding / unwinding selection knob 606 (i.e. Figure 8 Connect the corresponding SA6 in the middle.

[0048] More specifically, in the above optional embodiments, see [reference] Figure 8 and Figure 9 The other ends of the two normally open contacts K12 of the upper reel unwinding relay 712 are respectively connected to the upper reel unwinding solenoid valve 808 (i.e. Figure 9 The corresponding YV2B) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A is connected; the coil KC12 of the upper reel unwinding relay 712 is connected to the upper reel unwinding control key 501L (i.e., Figure 8 The corresponding SB12) and the upper reel winding / unwinding selection knob 606 (i.e. Figure 8 Connect the corresponding SA6 in the middle.

[0049] More specifically, in the above optional embodiments, see [reference] Figure 8 and Figure 9 The other ends of the two normally open contacts K13 of the lower reel take-up relay 713 are respectively connected to the lower reel take-up solenoid valve 809 (i.e. Figure 9 The corresponding YV3A) and unloading solenoid valve 811 (i.e. Figure 9 The coil KC13 of the lower reel take-up relay 713 is connected to the lower reel take-up control key 501M (i.e., the corresponding YV1A); Figure 8 The corresponding SB13 and the lower reel winding / unwinding selection knob 607 (i.e. Figure 8 Connect the corresponding SA7 in the middle.

[0050] More specifically, in the above optional embodiments, see [reference] Figure 8 and Figure 9 The other ends of the two normally open contacts K14 of the lower reel unwinding relay 714 are respectively connected to the lower reel unwinding solenoid valve 810 (i.e., Figure 9 The corresponding YV3B) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A is connected; the coil KC14 of the lower reel unwinding relay 714 is connected to the lower reel unwinding control key 501N (i.e., Figure 8 The corresponding SB14) and the lower reel winding / unwinding selection knob 607 (i.e. Figure 8 Connect the corresponding SA7 in the middle.

[0051] More specifically, in the above optional embodiments, see [reference] Figures 7 to 9 Local / Remote Selection Knob 4 (i.e.) Figure 7 The corresponding SA0) is respectively connected to the left front outrigger raising control key 501A (i.e. Figure 7 The corresponding SB1), and the left front outrigger descent control key 501B (i.e. Figure 7 The corresponding SB2), right front outrigger rise control key 501C (i.e. Figure 7 The corresponding SB3), right front outrigger descent control key 501D (i.e. Figure 7 The corresponding SB4), and the left rear outrigger raising control key 501E (i.e. Figure 7 The corresponding SB5), and the left rear outrigger descent control key 501F (i.e. Figure 7 The corresponding SB6), right rear outrigger rise control key 501G (i.e. Figure 7 The corresponding SB7), right rear outrigger descent control key 501H (i.e. Figure 7 The corresponding SB8), and the outrigger simultaneous raising control key 501I (i.e. Figure 7 The corresponding SB9), and the outrigger simultaneous descent control key 501J (i.e. Figure 7 The corresponding SB10), the upper reel take-up control key 501K (i.e. Figure 8 The corresponding SB11), the upper reel unwind control key 501L (i.e. Figure 8 The corresponding SB12 in the middle), the lower reel take-up control key 501M (i.e. Figure 8 The corresponding SB13), and the unwind control key 501N (i.e.) on the lower reel Figure 8 (corresponding to SB14 in the middle), left front outrigger rise / lower selection knob 601 (i.e.) Figure 7 The corresponding SA1), and the right front outrigger raise / lower selector knob 602. Figure 7 The corresponding SA2 in the middle), the left rear outrigger rise / lower selection knob 603 (i.e. Figure 7 The corresponding SA3 in the middle), the right rear outrigger rise / lower selection knob 604 (i.e. Figure 7 The corresponding SA4), and the outrigger simultaneous rise / fall selection knob 605 (i.e. Figure 7 The corresponding SA5), and the upper reel take-up / unwind selector knob 606 (i.e. Figure 8 The corresponding SA6) and the lower reel winding / unwinding selection knob 607 (i.e. Figure 8 Connect the corresponding SA7 in the middle.

[0052] Specifically, in some embodiments, in order to ensure driving safety, the hydraulic control system for outriggers and cable reels of the electric engineering vehicle provided by this utility model also includes an outrigger unretracted detection unit 10, which is used to detect the retraction status of each outrigger. When the vehicle is started, if an outrigger is detected to be unretracted, the outrigger unretracted detection unit 10 can issue an alarm to remind drivers of driving safety.

[0053] More specifically, the outrigger non-retraction detection unit 10 includes left front outrigger limit switches 1001, right front outrigger limit switches 1002, left rear outrigger limit switches 1003, and right rear outrigger limit switches 1004, respectively located at the ends of the left front outrigger 1301, right front outrigger 1302, left rear outrigger 1303, and right rear outrigger 1304. The left front outrigger limit switch 1001 (i.e., Figure 9 The corresponding SQ1), right front outrigger limit switch 1002 (i.e. Figure 9 The corresponding SQ2), left rear outrigger limit switch 1003 (i.e. Figure 9 The corresponding SQ3) and the right rear outrigger limit switch 1004 (i.e. Figure 9 The corresponding SQ4) are connected to the outrigger not retracted alarm indicator 11 installed in the cab of the electric engineering vehicle and the normally open contact K15 of the chassis ON position signal relay installed on the chassis of the electric engineering vehicle. The coil KC15 of the chassis ON position signal relay is connected to the ON position signal chassis key switch 12 installed in the cab of the electric engineering vehicle.

[0054] The ON position signal chassis key switch 12 is used to set the first condition for the outrigger not retracted alarm indicator 11 to work: the ON position signal chassis key switch 12 is connected to the coil KC15 of the chassis ON position signal relay, and the hydraulic control system power supply 1 (i.e., 24VDC power supply) is connected to the normally open contact K15 of the chassis ON position signal relay; when the ON position signal chassis key switch 12 is activated, the coil KC15 of the chassis ON position signal relay is activated, and the hydraulic control system power supply 1 and the normally open contact K15 of the chassis ON position signal relay are connected, thus activating the first condition for the alarm function. The activation of the left front outrigger limit switch 1001, right front outrigger limit switch 1002, left rear outrigger limit switch 1003, and right rear outrigger limit switch 1004 establishes the second condition for the outrigger not retracted alarm indicator 11 to operate. When any one of the limit switches is activated, the second condition for activating the alarm function can be achieved. Once the first and second conditions are established simultaneously, the outrigger failure alarm indicator 11 will activate and output an alarm message.

[0055] The working principle of the hydraulic control system for the outriggers and cable reel of the power engineering vehicle provided in this embodiment is as follows: When in use, emergency stop switch 2 (i.e. Figure 7 The corresponding SJ button is used to control the power supply of the entire hydraulic control system. When pressed, the power indicator light 3 of the hydraulic control system will not light up; the local / remote selection knob 4 (i.e., Figure 7The corresponding SA0) is used to control the switching between remote control and local (manual) modes of the entire hydraulic control system. In remote control mode, the local / remote selection knob 4 (i.e. Figure 7 When the normally closed contact of SA0 (corresponding to SA0) is open, the remote control circuit is energized; in local (manual) mode, the local / remote selection knob 4 (i.e., Figure 7 When the normally open contact of the corresponding SA0 is closed, the local circuit is energized.

[0056] 1. In remote control mode A. Left front outrigger raising control key 501A (i.e.) Figure 7 The coil KC1 of the left front outrigger raising relay 701 (corresponding to SB1) controls the three normally open contacts K1 of the left front outrigger raising relay 701, which synchronously control the outrigger raising solenoid valve 805 (i.e., Figure 8 The corresponding YV4B), left front outrigger solenoid valve 801 (i.e. Figure 8 The corresponding YV1) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the 1301 rising movement of the left front leg; B. Left front outrigger descent control key 501B (i.e.) Figure 7 The coil KC2 of the left front outrigger lowering relay 702 (corresponding to SB2) controls the three normally open contacts K2 of the left front outrigger lowering relay 702, which synchronously control the outrigger lowering solenoid valve 806 (i.e., Figure 8 The corresponding YV4A), left front outrigger solenoid valve 801 (i.e. Figure 8 The corresponding YV1) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the 1301 descent movement of the left front support leg; C. Right front outrigger raising control key 501C (i.e.) Figure 7 The coil KC3 of the right front outrigger raising relay 703 (corresponding to SB3) controls the three normally open contacts K3 of the right front outrigger raising relay 703, which synchronously control the outrigger raising solenoid valve 805 (i.e., Figure 8 The corresponding YV4B), right front outrigger solenoid valve 802 (i.e. Figure 8 The corresponding YV2) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the right front leg 1302 rising movement; D. Right front outrigger descent control key 501D (i.e.) Figure 7 The coil KC4 of the right front outrigger lowering relay 704 (corresponding to SB4) controls the three normally open contacts K4 of the right front outrigger lowering relay 704, which synchronously control the outrigger lowering solenoid valve 806 (i.e., Figure 8 The corresponding YV4A), right front outrigger solenoid valve 802 (i.e. Figure 8The corresponding YV2) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the 1302 descent movement of the right front leg; E. Left rear support leg raising control key 501E (i.e. Figure 7 The coil KC5 of the left rear outrigger raising relay 705 (corresponding to SB5) controls the three normally open contacts K5 of the left rear outrigger raising relay 705, which synchronously control the outrigger raising solenoid valve 805 (i.e., Figure 8 The corresponding YV4B), and the left rear outrigger solenoid valve 803 (i.e. Figure 8 The corresponding YV3) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the 1303 rising movement of the left rear support leg; F. Left rear outrigger descent control key 501F (i.e.) Figure 7 The coil KC6 of the left rear outrigger lowering relay 706 (corresponding to SB6) controls the three normally open contacts K6 of the left rear outrigger lowering relay 706, which synchronously control the outrigger lowering solenoid valve 806 (i.e., Figure 8 The corresponding YV4A), and the left rear outrigger solenoid valve 803 (i.e. Figure 8 The corresponding YV3) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the descent movement of the left rear support leg 1302; G. Right rear support leg raising control key 501G (i.e.) Figure 7 The coil KC7 of the right rear outrigger raising relay 707 (corresponding to SB7) controls the three normally open contacts K7 of the right rear outrigger raising relay 707, which synchronously control the outrigger raising solenoid valve 805 (i.e., Figure 8 The corresponding YV4B), right rear outrigger solenoid valve 804 (i.e. Figure 8 The corresponding YV4) and unloading solenoid valve 811 ( Figure 9 The corresponding YV1A movement in the middle realizes the 1304 rising movement of the right rear support leg; H. Right rear support leg descent control key 501H (i.e.) Figure 7 The coil KC8 of the right rear outrigger lowering relay 708 (corresponding to SB8) controls the lowering relay 708 of the right rear outrigger. The three normally open contacts K8 of the right rear outrigger lowering relay 708 synchronously control the outrigger lowering solenoid valve 806 (i.e., Figure 8 The corresponding YV4A), right rear outrigger solenoid valve 804 (i.e. Figure 8 The corresponding YV4) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the 1304 descent movement of the right rear support leg; I. Control key 501I for simultaneous raising of outriggers (i.e.) Figure 7The coil KC9 of the outrigger simultaneous raising relay 709 (corresponding to SB9) controls the coil KC1\KC3\KC5\KC7 of the left front outrigger raising relay 701, right front outrigger raising relay 703, left rear outrigger raising relay 705, and right rear outrigger raising relay 707. The normally open contacts K1\K3\K5\K7 of the left front outrigger raising relay 701, right front outrigger raising relay 703, left rear outrigger raising relay 705, and right rear outrigger raising relay 707 simultaneously control the outrigger raising solenoid valve 805 (i.e., Figure 8 The corresponding YV4B), left front outrigger solenoid valve 801 (i.e. Figure 8 The right front outrigger solenoid valve 802 (i.e., YV1) is the corresponding valve in the middle section. Figure 8 The corresponding YV2) / Left rear outrigger solenoid valve 803 (i.e. Figure 8 The corresponding YV3) / right rear outrigger solenoid valve 804 (i.e. Figure 8 The corresponding YV4) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement enables the four supporting legs (including the left front supporting leg, right front supporting leg, left rear supporting leg, and right rear supporting leg) to rise synchronously. J. Control key 501J for simultaneous lowering of outriggers (i.e.) Figure 7 The coil KC10 of the outrigger simultaneous descent relay 710 (corresponding to SB10) controls the coil KC2\KC4\KC6\KC8 of the left front outrigger descent relay 702, right front outrigger descent relay 704, left rear outrigger descent relay 706, and right rear outrigger descent relay 708. The normally open contacts K2\K4\K6\K8 of the left front outrigger descent relay 702, right front outrigger descent relay 704, left rear outrigger descent relay 706, and right rear outrigger descent relay 708 simultaneously control the outrigger descent solenoid valve 806 (i.e.,...). Figure 8 The corresponding YV4A), left front outrigger solenoid valve 801 (i.e. Figure 8 The corresponding YV1) / right foreleg 802 (i.e. Figure 8 The corresponding YV2) / Left rear outrigger solenoid valve 803 (i.e. Figure 8 The corresponding YV3) / right rear outrigger solenoid valve 804 (i.e. Figure 8 The corresponding YV4) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement enables the four outriggers (including the left front outrigger, right front outrigger, left rear outrigger, and right rear outrigger) to descend synchronously. K. Rewind control key 501K (i.e.) Figure 8The coil KC11 of the upper reel take-up relay 711 (corresponding to SB11) controls the coil of the upper reel take-up relay 711. The two normally open contacts K11 of the upper reel take-up relay 711 synchronously control the upper reel take-up solenoid valve 807 (i.e., Figure 8 The corresponding YV2A) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A action in the middle realizes the winding (winding) action of the upper winding coil 1401; L. Unwind control key 501L (i.e.) Figure 8 The coil KC12 of the upper reel unwinding relay 712 (corresponding to SB12) controls the coil of the upper reel unwinding relay 712. The two normally open contacts K12 of the upper reel unwinding relay 712 synchronously control the upper reel unwinding solenoid valve 808 (i.e., Figure 8 The corresponding YV2B) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A action in the middle realizes the unwinding (winding) action of the upper reel 1401; M. Lower reel rewind control key 501M (i.e.) Figure 8 The coil KC13 of the lower reel take-up relay 713 (corresponding to SB13) controls the coil of the lower reel take-up relay 713. The two normally open contacts K13 of the lower reel take-up relay 713 synchronously control the lower reel take-up solenoid valve 809 (i.e., Figure 8 The corresponding YV3A) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A action in the middle realizes the winding (winding) action of the lower reel 1402; N. Lower reel unwind control key 501N (i.e.) Figure 8 The coil KC14 of the lower reel unwinding relay 714 (corresponding to SB14) controls the coil of the lower reel unwinding relay 714. The two normally open contacts K14 of the lower reel unwinding relay 714 synchronously control the lower reel unwinding solenoid valve 810 (i.e., Figure 8 The corresponding YV3B) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A action in the middle realizes the unwinding (winding) action of the lower reel 1402; 2. In local (manual) mode A. Left front outrigger raise / lower selection knob 601 (i.e.) Figure 7 The coil KC1 of the left front outrigger raising relay 701 (corresponding to SA1) controls the left front outrigger raising relay 701 to rotate leftward. The three normally open contacts K1 of the left front outrigger raising relay 701 synchronously control the outrigger raising solenoid valve 805 (i.e., Figure 8 The corresponding YV4B), left front outrigger solenoid valve 801 (i.e. Figure 8 The corresponding YV1) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the 1301 rising movement of the left front leg; B. Left front outrigger elevation / reduction selection knob 601 (i.e.) Figure 7The coil KC2 of the left front outrigger lowering relay 702 (corresponding to SA1) is controlled by a right-hand rotation. The three normally open contacts K2 of the left front outrigger lowering relay 702 synchronously control the outrigger lowering solenoid valve 806 (i.e., Figure 8 The corresponding YV4A), left front outrigger solenoid valve 801 (i.e. Figure 8 The corresponding YV1) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the 1301 descent movement of the left front support leg; C. Right front outrigger elevation / depression selection knob 602 (i.e.) Figure 7 The coil KC3 of the right front outrigger raising relay 703 (corresponding to SA2) controls the left rotation of the relay. The three normally open contacts K3 of the right front outrigger raising relay 703 synchronously control the outrigger raising solenoid valve 805 (i.e., Figure 8 The corresponding YV4B), right front outrigger solenoid valve 802 (i.e. Figure 8 The corresponding YV2) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the right front leg 1302 rising movement; D. Right front outrigger elevation / depression selection knob 602 (i.e.) Figure 7 The coil KC4 of the right-hand front outrigger lowering relay 704 (corresponding to SA2) controls the right front outrigger lowering relay 704. The three normally open contacts K4 of the right front outrigger lowering relay 704 synchronously control the outrigger lowering solenoid valve 806 (i.e. Figure 8 The corresponding YV4A), right front outrigger solenoid valve 802 (i.e. Figure 8 The corresponding YV2) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the 1302 descent movement of the right front leg; E. Left rear outrigger raise / lower selection knob 603 (i.e. Figure 7 The coil KC5 of the left rear outrigger raising relay 705 (corresponding to SA3) controls the left rear outrigger raising relay 705. The three normally open contacts K5 of the left rear outrigger raising relay 705 synchronously control the outrigger raising solenoid valve 805 (i.e., Figure 8 The corresponding YV4B), and the left rear outrigger solenoid valve 803 (i.e. Figure 8 The corresponding YV3) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the 1303 rising movement of the left rear support leg; F. Left rear outrigger ascend / descend selection knob 603 (i.e. Figure 7 The coil KC6 of the left rear outrigger lowering relay 706 (corresponding to SA3) is controlled by a right-hand rotation. The three normally open contacts K6 of the left rear outrigger lowering relay 706 synchronously control the outrigger lowering solenoid valve 706 (i.e., Figure 8 The corresponding YV4A), and the left rear outrigger solenoid valve 703 (i.e. Figure 8The corresponding YV3) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the descent movement of the left rear support leg 1302; G. Right rear outrigger ascend / descend selection knob 604 (i.e.) Figure 7 The coil KC7 of the right rear outrigger raising relay 707 (corresponding to SA4) controls the left rotation of the coil. The three normally open contacts K7 of the right rear outrigger raising relay 707 synchronously control the outrigger raising solenoid valve 805 (i.e., Figure 8 The corresponding YV4B), right rear outrigger solenoid valve 804 (i.e. Figure 8 The corresponding YV4) and unloading solenoid valve 811 ( Figure 9 The corresponding YV1A movement in the middle realizes the 1304 rising movement of the right rear support leg; H. Right rear outrigger ascend / descend selection knob 604 (i.e.) Figure 7 The coil KC8 of the right rear outrigger lowering relay 708 (corresponding to SA4) controls the right rear outrigger lowering relay 708. The three normally open contacts K8 of the right rear outrigger lowering relay 708 synchronously control the outrigger lowering solenoid valve 806 (i.e. Figure 8 The corresponding YV4A), right rear outrigger solenoid valve 804 (i.e. Figure 8 The corresponding YV4) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement in the middle realizes the 1304 descent movement of the right rear support leg; I. Outrigger simultaneous rise / fall selection knob 605 (i.e.) Figure 7 The coil KC9 of the outrigger simultaneous raising relay 709 (corresponding to SA5) controls the left rotation. The four normally open contacts K9 of the outrigger simultaneous raising relay 709 synchronously control the coils KC1, KC3, KC5, and KC7 of the left front outrigger raising relay 701, right front outrigger raising relay 703, left rear outrigger raising relay 705, and right rear outrigger raising relay 707. The normally open contacts K1, K3, K5, and K7 of the left front outrigger raising relay 701, right front outrigger raising relay 703, left rear outrigger raising relay 705, and right rear outrigger raising relay 707 synchronously control the outrigger raising solenoid valve 805 (i.e., Figure 8 The corresponding YV4B), left front outrigger solenoid valve 801 (i.e. Figure 8 The right front outrigger solenoid valve 802 (i.e., YV1) is the corresponding valve in the middle section. Figure 8 The corresponding YV2) / Left rear outrigger solenoid valve 803 (i.e. Figure 8 The corresponding YV3) / right rear outrigger solenoid valve 804 (i.e. Figure 8 The corresponding YV4) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement enables the four supporting legs (including the left front supporting leg, right front supporting leg, left rear supporting leg, and right rear supporting leg) to rise synchronously. J. Outrigger simultaneous rise / fall selection knob 605 (i.e.) Figure 7 The coil KC10 of the right-hand control outrigger simultaneous descent relay 710 (corresponding to SA5) synchronously controls the coils KC2\KC4\KC6\KC8 of the left front outrigger descent relay 702, right front outrigger descent relay 704, left rear outrigger descent relay 706, and right rear outrigger descent relay 708. The normally open contacts K2\K4\K6\K8 of the left front outrigger descent relay 702, right front outrigger descent relay 704, left rear outrigger descent relay 706, and right rear outrigger descent relay 708 synchronously control the outrigger descent solenoid valve 806 (i.e., Figure 8 The corresponding YV4A), left front outrigger solenoid valve 801 (i.e. Figure 8 The corresponding YV1) / right foreleg 802 (i.e. Figure 8 The corresponding YV2) / Left rear outrigger solenoid valve 803 (i.e. Figure 8 The corresponding YV3) / right rear outrigger solenoid valve 804 (i.e. Figure 8 The corresponding YV4) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A movement enables the four outriggers (including the left front outrigger, right front outrigger, left rear outrigger, and right rear outrigger) to descend synchronously. K. Winding / Unwinding selection knob 606 (i.e.) Figure 8 The coil KC11 of the upper winding reel take-up relay 711 (corresponding to SA6) controls the left-hand rotation of the upper winding reel take-up relay 711. The two normally open contacts K11 of the upper winding reel take-up relay 711 synchronously control the upper winding reel take-up solenoid valve 807 (i.e., Figure 8 The corresponding YV2A) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A action in the middle realizes the winding (winding) action of the upper winding coil 1401; L. Winding reel winding / unwinding selection knob 606 (i.e.) Figure 8 The coil KC12 of the right-hand control upper reel unwinding relay 712 (corresponding to SA6) controls the upper reel unwinding relay 712. The two normally open contacts K14 of the upper reel unwinding relay 712 synchronously control the upper reel unwinding solenoid valve 808 (i.e., Figure 8 The corresponding YV2B) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A action in the middle realizes the unwinding (winding) action of the upper reel 1401; M. Lower reel winding / unwinding selection knob 607 (i.e.) Figure 8 The coil KC13 of the lower reel take-up relay 713 (corresponding to SA7) controls the left-hand rotation of the lower reel take-up relay 713. The two normally open contacts K13 of the lower reel take-up relay 713 synchronously control the lower reel take-up solenoid valve 809 (i.e., Figure 8 The corresponding YV3A) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A action in the middle realizes the winding (winding) action of the lower reel 1402; O. Lower reel winding / unwinding selection knob 607 (i.e.) Figure 8 The coil KC14 of the right-hand control of the unwinding relay 714 (corresponding to SA7) controls the two normally open contacts K14 of the unwinding relay 714, which synchronously control the unwinding solenoid valve 810 (i.e., Figure 8 The corresponding YV3B) and unloading solenoid valve 811 (i.e. Figure 9 The corresponding YV1A action in the middle realizes the unwinding (winding) action of the lower reel 1402; 3. After the chassis key switch 12 is activated, the ON position signal relay is controlled, the outrigger in retraction alarm system is energized, and the four outrigger retraction detection sensors, namely the left front outrigger travel switch 1001, right front outrigger travel switch 1002, left rear outrigger travel switch 1003, and right rear outrigger travel switch 1004 (i.e., Figure 9 The corresponding SQ1 / SQ2 / SQ3 / SQ4) start working. After all four outriggers are retracted, the four outriggers retract to detect the sensors (i.e., Figure 9 When the normally closed contacts of the corresponding SQ1 / SQ2 / SQ3 / SQ4 are open, the outrigger failure alarm indicator 11 is turned off; when the outriggers are not fully retracted, the four outrigger retraction detection sensors (i.e., Figure 9 When any normally closed contact of the corresponding SQ1 / SQ2 / SQ3 / SQ4 is closed, the outrigger failure alarm indicator 11 is powered on, and an alarm is triggered.

[0057] In addition, it should be noted that Figures 7 to 9 The electrical circuits are connected sequentially, for example: Figure 7 The line endpoint L1-1a in the diagram is related to... Figure 8 The line endpoint L1-1b is connected in the middle. Figure 8 The line endpoint L1-1c in the middle is with Figure 9 The line endpoint L1-1d is connected in the middle; Figure 7 The line endpoint L1-2a in the diagram is related to... Figure 8 The line endpoint L1-2b is connected in the middle; Figure 7 The line endpoint L1-3a in the diagram is related to... Figure 8 The line endpoints L1-3b are connected in the middle; Figure 7 The line endpoint L2-1 in the diagram is related to... Figure 9 The line endpoint L2-2 is connected in the middle; Figure 7 The line endpoint NO-1 in the diagram is related to... Figure 8 The line endpoint NO-2 is connected; Figure 8 The line endpoint NO-3 in the text is related to... Figure 9 The line endpoint NO-4 is connected. Furthermore, Figure 7The line terminals L0 and N0 are connected to the positive and negative terminals of the hydraulic control system power supply 1, respectively.

[0058] Finally, it should be noted that the above description is only an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A hydraulic control system for outriggers and cable reels of an electric engineering vehicle, characterized in that: The system includes a hydraulic control system power supply (1), a local / remote control selection knob (4), a remote control unit (5), a local operation knob unit (6), a relay unit (7), and a solenoid valve unit (8). The hydraulic control system power supply (1) is connected to the local / remote control selection knob (4) and the relay unit (7). The local / remote control selection knob (4) is connected to the remote control unit (5) and the local operation knob unit (6). The remote control unit (5) and the local operation knob unit (6) are connected to each other. All of them are connected to the relay unit (7), the relay unit (7) is connected to the solenoid valve unit (8), and the solenoid valve unit (8) is connected to the hydraulic outrigger unit (13) and the hydraulic reel unit (14) of the electric engineering vehicle respectively. The hydraulic outrigger unit (13) includes a left front outrigger (1301), a right front outrigger (1302), a left rear outrigger (1303) and a right rear outrigger (1304); the hydraulic reel unit (14) includes an upper reel (1401) and a lower reel (1402).

2. The hydraulic control system for the outriggers and cable reel of the power engineering vehicle according to claim 1, characterized in that: It also includes an emergency stop switch (2), one end of which is connected to the power supply (1) of the hydraulic control system, and the other end is connected to the local / remote selection knob (4) and the relay unit (7) respectively.

3. The hydraulic control system for the outriggers and cable reel of the power engineering vehicle according to claim 2, characterized in that: It also includes a hydraulic control system power indicator (3), one end of which is connected to the hydraulic control system power supply (1), and the other end is connected to the emergency stop switch (2), the local / remote selection knob (4), and the relay unit (7).

4. The hydraulic control system for the outriggers and cable reel of the power engineering vehicle according to claim 3, characterized in that: It also includes a hydraulic control box (9), the power supply (1) of the hydraulic control system and the relay unit (7) are all located inside the hydraulic control box (9), and the emergency stop switch (2), the power indicator light (3) of the hydraulic control system, the local / remote selection knob (4) and the local operation knob unit (6) are all embedded on the surface of the hydraulic control box (9).

5. The hydraulic control system for the outriggers and cable reel of the power engineering vehicle according to claim 4, characterized in that: The hydraulic control box (9) includes a sealed box (901) and a sealed cover (902). The hydraulic control system power supply (1) and relay unit (7) are both located inside the sealed box (901). The emergency stop switch (2), hydraulic control system power indicator (3), local / remote selection knob (4) and local operation knob unit (6) are all embedded on the surface of the sealed cover (902). The sealed box (901) is also provided with a remote control input interface (903) and a solenoid valve control output interface (904). The remote control input interface (903) is connected to the remote control unit (5), and the solenoid valve control output interface (904) is connected to the solenoid valve unit (8).

6. The hydraulic control system for the outriggers and cable reel of the power engineering vehicle according to claim 5, characterized in that: The remote control unit (5) includes a remote control transmitter (501) and a remote control receiver (502). The remote control transmitter (501) and the remote control receiver (502) are communicatively connected, and the remote control receiver (502) is electrically connected to the remote control input interface (903) on the hydraulic control box (9). The remote control transmitter (501) is equipped with a left front outrigger raising control key (501A) for remotely raising the left front outrigger (1301), a left front outrigger lowering control key (501B) for remotely lowering the left front outrigger (1301), and a control key for remotely lowering the right front outrigger (1301). 2) Control keys for raising the right front outrigger (501C), lowering the right front outrigger (1302) (501D), raising the left rear outrigger (1303) (501E), lowering the left rear outrigger (1303) (501F), raising the right rear outrigger (1304) (501G), lowering the right rear outrigger (1304) (501H), and raising all outriggers simultaneously. The system includes: a lift control key (501I), a remote control control key for simultaneously lowering all outriggers (501J), an upper reel rewind control key (501K) for remotely controlling the upper reel (1401) to rewind, an upper reel unwind control key (501L) for remotely controlling the upper reel (1401) to unwind, a lower reel rewind control key (501M) for remotely controlling the lower reel (1402) to rewind, and a lower reel unwind control key (501N) for remotely controlling the lower reel (1402) to unwind; and a left front outel lift control key (501A), a left front outel lowering control key (501B), and a right front outel lowering control key. The outrigger raise control key (501C), right front outrigger lower control key (501D), left rear outrigger raise control key (501E), left rear outrigger lower control key (501F), right rear outrigger raise control key (501G), right rear outrigger lower control key (501H), outrigger raise control key (501I), outrigger lower control key (501J), upper reel rewind control key (501K), upper reel unwind control key (501L), lower reel rewind control key (501M), and lower reel unwind control key (501N) are all connected to the local / remote selector knob (4).

7. The hydraulic control system for the outriggers and cable reel of the power engineering vehicle according to claim 6, characterized in that: The local operation knob unit (6) includes a left front outrigger rise / fall selection knob (601), a right front outrigger rise / fall selection knob (602), a left rear outrigger rise / fall selection knob (603), a right rear outrigger rise / fall selection knob (604), an outrigger simultaneous rise / fall selection knob (605), an upper reel wind-up / unwind selection knob (606), and a lower reel wind-up / unwind selection knob (607); and the left front outrigger rise / fall selection knob (601), the right front outrigger rise / fall selection knob (602), the left rear outrigger rise / fall selection knob (603), the right rear outrigger rise / fall selection knob (604), the outrigger simultaneous rise / fall selection knob (605), the upper reel wind-up / unwind selection knob (606), and the lower reel wind-up / unwind selection knob (607) are all connected to the local / remote control selection knob (4).

8. The hydraulic control system for the outriggers and cable reel of the power engineering vehicle according to claim 7, characterized in that: The relay unit (7) includes a left front outrigger raising relay (701), a left front outrigger lowering relay (702), a right front outrigger raising relay (703), a right front outrigger lowering relay (704), a left rear outrigger raising relay (705), a left rear outrigger lowering relay (706), a right rear outrigger raising relay (707), a right rear outrigger lowering relay (708), an outrigger raising relay (709), an outrigger lowering relay (710), an upper reel take-up relay (711), an upper reel unload relay (712), a lower reel take-up relay (713), and a lower reel unload relay (714). The solenoid valve unit (8) includes a left front outrigger solenoid valve (801), a right front outrigger solenoid valve (802), a left rear outrigger solenoid valve (803), a right rear outrigger solenoid valve (804), an outrigger raising solenoid valve (805), an outrigger lowering solenoid valve (806), an upper reel winding solenoid valve (807), an upper reel unwinding solenoid valve (808), a lower reel winding solenoid valve (809), a lower reel unwinding solenoid valve (810), and an unloading solenoid valve (811). The three normally open contacts K1 of the left front outrigger raising relay (701), the three normally open contacts K2 of the left front outrigger lowering relay (702), the three normally open contacts K3 of the right front outrigger raising relay (703), the three normally open contacts K4 of the right front outrigger lowering relay (704), the three normally open contacts K5 of the left rear outrigger raising relay (705), the three normally open contacts K6 of the left rear outrigger lowering relay (706), and the three normally open contacts K7 of the right rear outrigger raising relay (707) are... The three sets of normally open contacts K8 of relay (708), the four sets of normally open contacts K9 of the outrigger simultaneous raising relay (709), the four sets of normally open contacts K10 of the outrigger simultaneous lowering relay (710), the two sets of normally open contacts K11 of the upper reel take-up relay (711), the two sets of normally open contacts K12 of the upper reel unwinding relay (712), the two sets of normally open contacts K13 of the lower reel take-up relay (713), and the two sets of normally open contacts K14 of the lower reel unwinding relay (714) are all connected to the emergency stop switch (2). The other end of the three normally open contacts K1 of the left front outrigger raising relay (701) is connected to the outrigger raising solenoid valve (805), the left front outrigger solenoid valve (801), and the unloading solenoid valve (811), respectively; the coil KC1 of the left front outrigger raising relay (701) is connected to the left front outrigger raising control key (501A) and the left front outrigger raising / lowering selection knob (601), respectively. The other end of the three normally open contacts K2 of the left front outrigger lowering relay (702) is connected to the outrigger lowering solenoid valve (806), the left front outrigger solenoid valve (801), and the unloading solenoid valve (811), respectively; the coil KC2 of the left front outrigger lowering relay (702) is connected to the left front outrigger lowering control key (501B) and the left front outrigger raising / lowering selection knob (601), respectively. The other end of the three normally open contacts K3 of the right front outrigger raising relay (703) is connected to the outrigger raising solenoid valve (805), the right front outrigger solenoid valve (802), and the unloading solenoid valve (811), respectively; the coil KC3 of the right front outrigger raising relay (703) is connected to the right front outrigger raising control key (501C) and the right front outrigger raising / lowering selection knob (602), respectively. The other end of the three normally open contacts K4 of the right front outrigger lowering relay (704) is connected to the outrigger lowering solenoid valve (806), the right front outrigger solenoid valve (802), and the unloading solenoid valve (811), respectively; the coil KC4 of the right front outrigger lowering relay (704) is connected to the right front outrigger lowering control key (501D) and the right front outrigger raising / lowering selection knob (602), respectively. The other end of the three normally open contacts K5 of the left rear outrigger raising relay (705) is connected to the outrigger raising solenoid valve (805), the left rear outrigger solenoid valve (803), and the unloading solenoid valve (811), respectively; the coil KC5 of the left rear outrigger raising relay (705) is connected to the left rear outrigger raising control key (501E) and the left rear outrigger raising / lowering selection knob (603), respectively. The other end of the three normally open contacts K6 of the left rear outrigger lowering relay (706) is connected to the outrigger lowering solenoid valve (806), the left rear outrigger solenoid valve (803), and the unloading solenoid valve (811), respectively; the coil KC6 of the left rear outrigger lowering relay (706) is connected to the left rear outrigger lowering control key (501F) and the left rear outrigger raising / lowering selection knob (603), respectively. The other end of the three normally open contacts K7 of the right rear outrigger raising relay (707) is connected to the outrigger raising solenoid valve (805), the right rear outrigger solenoid valve (804), and the unloading solenoid valve (811), respectively; the coil KC7 of the right rear outrigger raising relay (707) is connected to the right rear outrigger raising control key (501G) and the right rear outrigger raising / lowering selection knob (604), respectively. The other end of the three normally open contacts K8 of the right rear outrigger lowering relay (708) is connected to the outrigger lowering solenoid valve (806), the right rear outrigger solenoid valve (804), and the unloading solenoid valve (811), respectively; the coil KC8 of the right rear outrigger lowering relay (708) is connected to the right rear outrigger lowering control key (501H) and the right rear outrigger raising / lowering selection knob (604), respectively. The other ends of the four normally open contacts K9 of the outrigger simultaneous raising relay (709) are respectively connected to the coil KC1 of the left front outrigger raising relay (701), the coil KC3 of the right front outrigger raising relay (703), the coil KC5 of the left rear outrigger raising relay (705), and the coil KC6 of the right rear outrigger raising relay (707); the coil KC9 of the outrigger simultaneous raising relay (709) is respectively connected to the outrigger simultaneous raising control key (501I) and the outrigger simultaneous raising / lowering selection knob (605). The other ends of the four normally open contacts K10 of the outrigger simultaneous lowering relay (710) are respectively connected to the coil KC2 of the left front outrigger lowering relay (702), the coil KC4 of the right front outrigger lowering relay (704), the coil KC6 of the left rear outrigger lowering relay (706), and the coil KC8 of the right rear outrigger lowering relay (708); the coil KC10 of the outrigger simultaneous lowering relay (710) is respectively connected to the outrigger simultaneous lowering control key (501J) and the outrigger simultaneous raising / lowering selection knob (605); The other ends of the two normally open contacts K11 of the upper reel take-up relay (711) are respectively connected to the upper reel take-up solenoid valve (807) and the unloading solenoid valve (811); the coil KC11 of the upper reel take-up relay (711) is respectively connected to the upper reel take-up control key (501K) and the upper reel take-up / unwind selection knob (606). The other ends of the two normally open contacts K12 of the upper reel unwinding relay (712) are respectively connected to the upper reel unwinding solenoid valve (808) and the unloading solenoid valve (811); the coil KC12 of the upper reel unwinding relay (712) is respectively connected to the upper reel unwinding control key (501L) and the upper reel winding / unwinding selection knob (606); The other ends of the two normally open contacts K13 of the lower reel take-up relay (713) are respectively connected to the lower reel take-up solenoid valve (809) and the unloading solenoid valve (811); the coil KC13 of the lower reel take-up relay (713) is respectively connected to the lower reel take-up control key (501M) and the lower reel take-up / unwind selection knob (607). The other ends of the two normally open contacts K14 of the lower reel unwinding relay (714) are respectively connected to the lower reel unwinding solenoid valve (810) and the unloading solenoid valve (811); the coil KC14 of the lower reel unwinding relay (714) is respectively connected to the lower reel unwinding control key (501N) and the lower reel winding / unwinding selection knob (607).

9. The hydraulic control system for the outriggers and cable reel of the power engineering vehicle according to any one of claims 1 to 8, characterized in that: It also includes a outrigger non-retraction detection unit (10), which includes a left front outrigger travel switch (1001), a right front outrigger travel switch (1002), a left rear outrigger travel switch (1003), and a right rear outrigger travel switch (1004) respectively disposed at the ends of the left front outrigger (1301), the right front outrigger (1302), the left rear outrigger (1303), and the right rear outrigger (1304). The left front outrigger travel switch (1001), the right front outrigger travel switch (1002), the left rear outrigger travel switch (1003), and the right rear outrigger travel switch (1004) are all connected to the outrigger non-retraction alarm indicator (11) installed in the cab of the electric vehicle and the normally open contact K15 of the chassis ON position signal relay installed on the chassis of the electric vehicle. The coil KC15 of the chassis ON position signal relay is connected to the ON position signal chassis key switch (12) installed in the cab of the electric vehicle.

Images