36 results about "Pilot" patented technology

The invention discloses a multi-circle combined jacking pipe and a connecting and locking device thereof, and relates to the technical field of jacking pipe structures, the connecting and locking device comprises a connecting shell and a connecting assembly, the connecting shell extends in the extending direction of a pipe jacking machine, and a limiting groove is formed between the connecting shell and the outer wall of the pipe jacking machine; the connecting assembly comprises a connecting rod, an inserting rod, a connecting pivot, a locking piece and a telescopic driving structure, one end of the inserting rod is matched with the limiting groove in an inserting mode, the other end of the inserting rod extends out of the limiting groove and is hinged to the connecting rod through the connecting pivot, and the end, away from the inserting rod, of the connecting rod is hinged to the side wall of the pilot pipe through a hinge shaft; the telescopic driving structure is connected to the middle of the connecting rod and can drive the connecting rod to rotate around the hinge shaft, and the locking piece can lock or unlock the connecting pivot, so that the inserting rod can be fixed or rotate relative to the connecting rod, multi-angle connection between the pilot pipe and the pipe jacking machine can be adapted, and the adjusting efficiency of the connecting posture of the pilot pipe and the pipe jacking machine is improved; and the connection precision and the connection reliability are improved.

An apparatus for centering a pilot tool within a valve guide during valve seat cutting is disclosed. The apparatus includes a pilot tool and an adapter. The pilot tool includes a shank, and an extended section extending from the shank. The extended section includes an upper section and a lower section. The upper section extends from the shank, and the lower section extends from the upper section. The upper section includes a tapered section, and the lower section includes a straight section. The adapter receives the shank. In one embodiment, the upper section engages with the valve guide to operate the pilot tool as a fixed pilot to center within the valve guide. In another embodiment, the lower section operatively contacts the valve guide. The adapter rotates causing the lower section to rotate within the valve guide, and operate the pilot tool as a live pilot for centering within the valve guide.

A system for controlling a locomotive includes a display device and a controller. The display device is configured to receive a braking information to halt the locomotive from a back-office and display a notification regarding the braking information. The controller is configured to receive the braking information from the back-office to halt the locomotive, determine if a pilot present in the locomotive has any one of responded to the notification displayed on the display device within a predetermined time duration and accepted transmission of an intended braking command, by the controller, to a braking system of the locomotive to halt the locomotive, and transmit a braking command to the braking system of the locomotive to halt the locomotive if the pilot has any one of not responded to the notification within the predetermined time duration and accepted transmission of the intended braking command to the braking system.

This application provides a GNSS-based intelligent early warning control system, method, and storage medium for construction machinery operating near a railway line, relating to the field of obstacle avoidance technology for construction machinery. The method includes: acquiring three-dimensional coordinate information of the construction machinery body and dynamic end-effector's working point using at least one main GNSS positioning module and at least one secondary GNSS positioning module, respectively; combining this with pose sensing information collected by a pose sensor and preset machinery size parameters; accurately determining the three-dimensional spatial outer contour boundary of the construction machinery; and achieving comprehensive perception of the overall spatial position of the construction machinery. By determining the first minimum spatial distance between the three-dimensional spatial outer contour boundary and the warning fence, and the second minimum spatial distance with the parking fence, hierarchical early warning control is achieved. When preset locking conditions are met, a control level is automatically output, and the connection between the pilot solenoid valve circuit and the pilot oil circuit and the hydraulic system is cut off through the active parking control circuit, forcing the construction machinery into a locked-down state.

The application discloses a pantograph interlocking control device and control method for track traffic maintenance, which comprises an interlocking mechanism, an interlocking sliding block, a first switch, a second switch and a pilot double control electromagnetic valve, the pilot double control electromagnetic valve is arranged on a high-pressure air path of a locomotive, and the first switch and the second switch are respectively used for controlling the power-on state of the two ends of the pilot double control electromagnetic valve; the interlocking mechanism comprises a panel and two interlocking holes arranged on the panel, the locking tongues in the two interlocking holes are connected with the interlocking sliding block, and any locking tongue is rotated to drive the interlocking sliding block to slide horizontally, and then the interlocking sliding block synchronously drives the other locking tongue to rotate, the interlocking sliding block is provided with a first trigger sliding block and a second trigger sliding block, and the first trigger sliding block and the second trigger sliding block are respectively used for triggering the first switch and the second switch. The application can realize the interlocking protection function of the lifting of the pantograph of the track locomotive, and has the characteristics of simple operation and long service life.

The invention discloses an unloading method and system of an unmanned mine car, belongs to the field of mechanical engineering, and aims to solve the problem of unloading control of the unmanned mine car. The lifting angle data of the container, the weight of the container, the posture of the vehicle, the pressure data of a suspension oil cylinder and the unloading environment data are obtained; adjusting the pilot current according to a comparison result of a preset angle threshold value and the cargo box lifting angle data so as to control the cargo box lifting speed; according to a comparison result of a preset weight threshold value and the weight of the container, it is confirmed that unloading is completed; and according to the unloading environment data or the comparison result of the vehicle posture limiting value and the vehicle posture or the comparison result of the preset suspension pressure threshold value and the suspension oil cylinder pressure data, a lifting or descending pause instruction is generated. The lifting speed and the emergency state of the container during unloading can be dynamically controlled in combination with the limiting values, and the safety of equipment and personnel is ensured.

1. The name of the design product: switchable positive and negative hand handle valve. 2. The use of the design product: control of the pilot system of excavators and other engineering machinery, mainly controlling the spool action of the main control valve. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view.

1. The name of the design product: skid steer loader (660 crawler self-leveling pilot extended type). 2. The use of the design product: for skid steer loader. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The application discloses a multi-circle combined pipe and a connecting and locking device thereof, relates to the technical field of pipe structure, and the connecting and locking device comprises a connecting shell and a connecting assembly. The connecting shell extends along the extension direction of a pipe jacking machine, and a limiting groove is formed between the connecting shell and the outer wall of the pipe jacking machine. The connecting assembly comprises a connecting rod, a plug-in rod, a connecting pivot, a locking piece and a telescopic driving structure. One end of the plug-in rod is in plug-in cooperation with the limiting groove, the other end of the plug-in rod extends out of the limiting groove and is hinged to the connecting rod through the connecting pivot. The end of the connecting rod away from the plug-in rod is hinged to the side wall of a pilot pipe through a hinge shaft. The telescopic driving structure is connected to the middle part of the connecting rod. The telescopic driving structure can drive the connecting rod to rotate around the hinge shaft. The locking piece can lock or unlock the connecting pivot, so that the plug-in rod can be fixed or rotated relative to the connecting rod. The multi-angle connection between the pilot pipe and the pipe jacking machine can be adapted, the adjustment efficiency of the connection posture of the pilot pipe and the pipe jacking machine is improved, and the connection precision and the connection reliability are improved.

The application discloses a locomotive brake power module safety guiding control system and method, and belongs to the technical field of railway locomotive brakes. The system comprises a control module and a power module, and the control module is used to output control instructions for the locomotive brake. The power module comprises a first 24V power module, a second 24V power module, a 5V power module and a voltage detection circuit. The input ends of the first 24V power module and the second 24V power module are connected with an external power supply, the input end of the 5V power module is connected with the output end of the second 24V power module, and the output end of the 5V power module is connected with the control module to provide working power. The voltage detection circuit is arranged at the output end of the first 24V power module to detect the voltage value of the first 24V power module, and the voltage detection circuit is connected with the control module to output the voltage value of the first 24V power module to the control module. The locomotive brake power module safety guiding control system and method provided by the application can trigger the punishment braking of the brake when the power module fails.

The embodiment of the application provides a control method and a control device for a excavator, a processor and the excavator, and belongs to the field of engineering machinery. The excavator comprises a control mechanism, a bucket rod and a bucket rod retracting electromagnetic valve. The control method for the excavator comprises the following steps: acquiring a pilot pressure of the control mechanism and a bucket rod large cavity oil inlet pressure of the bucket rod; determining a target action type of the excavator according to the pilot pressure and the bucket rod large cavity oil inlet pressure, wherein the target action type comprises a far-end grading action and a non-far-end grading action; determining a target control current of the bucket rod retracting electromagnetic valve according to the target action type and the pilot pressure; and controlling the bucket rod retracting electromagnetic valve to work according to the target control current. The embodiment of the application can optimize the grading performance of the excavator.

The utility model belongs to the technical field of heading machine control, and provides a heading machine capable of standing to control four-way pilot handles, which is characterized by comprising a heading machine body, a first four-way pilot handle and a second four-way pilot handle are arranged on the heading machine body, and the first four-way pilot handle is arranged on a handle connecting frame on a seat box operating table. The second four-way pilot handle is arranged on a cover plate of the heading machine or a handle vertical frame on the cover plate; the first four-way pilot handle and the second four-way pilot handle are both provided with oil ways through a multi-way valve in the operation table. The standing and sitting dual-purpose heading machine is simple in structure, reasonable in design, convenient and practical, and can be used for standing and sitting, and the four-way pilot handle is easily controlled to control rotation lifting of the heading machine.

The application discloses a hydraulic system and method based on large engineering machinery escalator lifting control, and belongs to the technical field of engineering machinery equipment. An oil cylinder is hinged between the escalator and a working platform; a first power unit and a second power unit are connected to a first electromagnetic reversing valve; the first electromagnetic reversing valve is connected to a second electromagnetic reversing valve and a third check valve; one oil outlet of the second electromagnetic reversing valve is connected to a small cavity of the oil cylinder, and the other oil outlet is connected to the small cavity of the oil cylinder through a throttle valve; the third check valve is connected to a large cavity of the oil cylinder, and the third check valve is connected in parallel with a load holding valve; and a pilot control port of the load holding valve is connected to the small cavity of the oil cylinder. The hydraulic system can realize the control of the escalator without starting the host machine; the hydraulic system has relatively high power density, can reduce the space occupancy rate, and is convenient for arrangement, maintenance and installation; the hydraulic system is independent of the hydraulic system of the host machine, does not affect the flow demand of other system functions, and has excellent scalability.

The present invention discloses a method, system, and excavator for preventing air from being sucked into the bucket arm during excavator slewing. The method comprises: collecting pilot pressure values ​​for various excavator movements; determining the current excavator movement type based on the collected pilot pressure values; and controlling the opening of the bucket arm selector valve based on the current excavator movement type and the operating pressure of the hydraulic system. By controlling the opening of the bucket arm selector valve, the present invention can effectively prevent air from being sucked into the bucket arm during excavator slewing.

The invention discloses a train control operation method and system based on virtual marshalling, and relates to the technical field of rail transit control, and the method comprises the steps that a to-be-marshaled unit train transmits own vehicle data to a ground control system, virtual marshalling is carried out according to virtual marshalling information generated by the ground control system, and the train data is transmitted to a train control system; the pilot train generates different control strategies based on the information receiving time, the running condition and the running state of the following train, the following train runs under the minimum tracking distance range and the control strategy through a cooperative automatic driving system of the following train, and when marshalling is removed, marshalling is removed from the pilot train according to the sequence; therefore, safe cooperative operation of the trains is guaranteed, the train tracking interval is reduced to the maximum extent on the premise of safety, and the line transportation capacity is remarkably improved.

The application discloses a hydraulic energy-saving control method, a control system and a controller. The control method comprises the following steps: acquiring the opening and closing state of a pilot handle and the main pump pressure; judging whether the pilot handle is fully opened; in the case that the pilot handle is fully opened, determining the input power according to the relationship between the main pump pressure and a preset value; and performing volume speed regulation on the control system according to the input power, so as to change the working mode of the excavator; wherein the working mode comprises a first working mode, a second working mode and a third working mode. According to the application, the working mode of the excavator is adjusted according to the opening and closing state of the pilot handle and the pressure of the main pump, and the volume speed regulation is adopted, so that the working state of the excavator can be adjusted more accurately, and the working efficiency is improved.

The invention discloses a train head spacing optimization control method for following operation of virtual marshalling trains. Comprising the steps of obtaining and processing pilot train state data, constructing a variable universe fuzzy PID control algorithm based on virtual marshalling train following, designing an operation scene of a virtual marshalling train, processing the speed and displacement of virtual marshalling train algorithm following operation, evaluating optimization performance, and judging whether to end or not according to time step length. According to the method, the optimal safe train head distance between the trains can be calculated according to the real-time running state and the dispatching requirement of the trains, the train head distance in actual running is dynamically adjusted, and then the running safety and running efficiency of the trains are improved.

The invention discloses an unfavorable geological inclined shaft excavation pilot shaft collapse prevention construction method for a pumped storage power station, which comprises the following steps of: 1, excavating a pilot shaft, and measuring the center line of the pilot shaft; 2, mounting a sliding rail and a traction device; thirdly, anti-collapse steel pipes are installed in the guide wells through the sliding rails and the traction devices; 4, backfilling concrete in a gap between the bottom of the anti-collapse steel pipe and the well wall of the pilot well; 5, filling pisolite in a gap between the anti-collapse steel pipe and the well wall of the pilot well; and sixthly, the inclined shaft is excavated layer by layer. The excavation mode that the top-down layered excavation slide slag, inclined shaft supporting and anti-collapse steel pipe segmented cutting are alternately carried out is adopted, the anti-collapse steel pipe, the concrete anchoring section and the pisolite filling layer jointly form an overall rigid supporting system used for supporting the pilot shaft, and the anti-collapse steel pipe is used as the slide slag well; the problem that a raise boring machine pilot well in broken surrounding rocks and fault zones is prone to collapse and blockage can be thoroughly solved, and the whole process safety of unfavorable geological inclined shaft excavation can be guaranteed.

A loader lifting anti-spill control system and method includes a bucket, a boom, and a bucket cylinder connected to the bucket, wherein the bucket cylinder is connected to a variable pump via a main valve, the main valve is connected to a pilot control device, the main valve is connected to an oil tank via a second relief valve and a third relief valve, the variable pump is connected to a pump displacement control device, and the variable pump is also connected to a valve group control system of the boom; further comprising a controller, wherein the input end of the controller is connected to a handle, a boom angle sensor, and a bucket angle sensor, and the output end of the controller is connected to a pilot control device and a pump displacement control device. The loader lifting anti-spill control system and method of the present invention allows the bucket side blade to gradually become parallel to the ground angle during the lifting process, that is, the bucket side blade is in a horizontal position in the second half of the lifting period, eliminating the angle difference, thereby solving the problem of a large amount of material spilling; during the lifting process, no material is spilled, more material can be loaded and unloaded, and the productivity of a single cycle operation is improved.

The invention relates to an intrinsic safety type explosion-proof electromagnetic valve structure and an encapsulation process. The intrinsic safety type explosion-proof electromagnetic valve structure comprises a coil box assembly, a pilot seat assembly and a junction box assembly, the pilot seat assembly comprises a pilot seat, a pilot head and a silencing cap; the junction box assembly comprises a junction box, a cover and a wiring board. The coil box assembly comprises a coil box and a coil assembly; the coil assembly comprises a coil, a coil rack, a PCB and a coil board. And the coil rack is fixed in the coil box. Compared with the prior art, the electromagnetic valve has the advantages that the coil assembly can be completely sealed in the coil box through the fixing function of the pilot head and the protection of the encapsulation material, harmful substances such as moisture, dust and corrosive gas are prevented from entering the coil box, and the reliability of the electromagnetic valve in a severe environment is enhanced. The coil plate, the coil rack and the coil box are made of iron materials, so that electromagnetic force generated by the electromagnetic coil can be remarkably enhanced, magnetic lines are concentrated and guided, energy loss is reduced, and stability and efficiency of the electromagnetic valve are improved.

The invention relates to the technical field of shield construction, in particular to a shield tunneling machine split starting construction method which comprises the following steps that S1, a front pilot tunnel and a rear pilot tunnel are constructed on the two sides of a shield well; s2, the machine head is set to be in a muddy water mode, a trailer is divided into at least two subgroups, the machine head and at least one subgroup are transported into the shield well, the remaining subgroups are left outside the shield well, and the machine head, the subgroups located in the shield well, the subgroups located outside the shield well and a mud treatment station communicate with one another through mud pipelines; s3, the machine head conducts empty pushing or tunneling towards the direction of the front pilot tunnel by the distance of at least one group, a hole opening of the front pilot tunnel is blocked, and at least one group is transported into the shield well; and S4, the step S3 is repeated until all the groups are transported into the shield well and connected with one another. The technical problems that the construction efficiency is low and potential safety hazards of subsequent construction can be increased due to the fact that an existing shield tunneling machine adopts an earth pressure mode for starting during drainage tunnel construction can be solved.

The invention discloses a crane safety control assembly and a using method thereof and belongs to the technical field of crane safety control. The assembly comprises an automobile crane body, and a stay wire type length sensor is arranged on a horizontal supporting leg assembly of the automobile crane body and used for monitoring the extending state of a supporting leg; a control unit and a driver detection unit are arranged in the control room; the hydraulic system is provided with a pilot electromagnetic valve; the main arm and the auxiliary arm are connected through the mounting plate, and the auxiliary arm detection unit is arranged on the main arm. The using method comprises the steps that the sensor is calibrated, the extension amount of the supporting leg and the state of the auxiliary arm are monitored in real time, the control unit automatically selects the full-extension or half-extension performance table according to the extension amount of the supporting leg, the main arm or auxiliary arm performance table is selected according to the state of the auxiliary arm, and it is ensured that the hydraulic system is started only when an operator is on a seat through the driver detection unit. According to the invention, automatic selection of the performance table and control of the operation authority are realized, misoperation and violation operation are effectively avoided, and the operation safety of the crane is remarkably improved.

Described herein are multi-tool boring systems and methods of operating such systems for tunnel boring and / or underground pipe installation. A multi-tool boring system is specially configured for fast installation and replacement of various tools, such as a pneumatic rammer and a hydraulic drive, enabling different operating modes of the system, e.g., pilot tube installation, auger boring, pipe ramming, pilot pullback boring, static pipe bursting, and non-contact boring. In some examples, a multi-tool boring system comprises a track assembly, a jacking frame slidably supported on the track assembly, and an impact plate assembly, which is attached to the jacking frame and comprises an impact plate and shock absorbers between the impact plate and the jacking frame. The impact plate comprises an impact plate opening configured to engage and support a pneumatic rammer. The rammer can be replaced with a hydraulic drive with a shaft protruding through the opening.

The invention discloses a pilot induction handle for a crane, a control system and a using method, the pilot induction handle comprises at least two induction areas, the induction areas are connected with a controller, when the handle is held to cover different induction areas, the controller receives at least two induction signals of the handle and activates a pilot function, and the active action of the crane is executed, so that the reliability is ensured, and the safety of the crane is ensured. The induction signal triggering time is short; the control system comprises a handle, a controller, a display and an execution element, at least two induction areas are arranged on the handle, the control system further comprises an enabling key, the enabling key is arranged at any position of the handle, the display or the instrument board, and the enabling key is connected with the controller. According to the invention, the mode of the induction area and the enabling key is adopted, so that the reliability of pilot control of the handle can be improved; the display is additionally provided with a handle sensing area, an enabling key setting interface and a special control method, so that on the premise of ensuring safe control, different handles and operation habits of operators can be adapted, and the applicability is wider.

A method of controlling a wobble system of a work machine is provided. The swing system includes a parking brake and a swing brake. The method includes outputting pilot pressure to the parking brake and the swing brake based on an operating mode of the swing system. When the pilot pressure is the first pilot pressure, the pilot pressure causes the parking brake to be applied to the wobble system and the drift brake not to be applied to the wobble system. When the pilot pressure is a second pilot pressure, the pilot pressure causes the parking brake not to be applied to the wobble system and the drift brake not to be applied to the wobble system, the second pilot pressure being greater than the first pilot pressure. When the pilot pressure is a third pilot pressure, the pilot pressure causes the parking brake not to be applied to the wobble system and the drift brake to be applied to the wobble system, the third pilot pressure being greater than the second pilot pressure.

A method of controlling a swing system of a work machine is provided. The swing system comprises a parking brake and swing brake. The method comprises outputting a pilot pressure to the parking brake and the swing brake based on an operation mode of the swing system. When the pilot pressure is a first pilot pressure, the pilot pressure causes the parking brake to be applied to the swing system and the drift brake to be disapplied to the swing system. When the pilot pressure is a second pilot pressure, the pilot pressure causes the parking brake to be disapplied to the swing system and the drift brake to be disapplied to the swing system, the second pilot pressure being greater than the first pilot pressure. When the pilot pressure is a third pilot pressure, the pilot pressure causes the parking brake to be disapplied to the swing system and the drift brake to be applied to the swing system, the third pilot pressure being greater than the second pilot pressure.

This utility model discloses a novel operator's cab pitch control system and a wheeled crane, belonging to the field of crane technology, aiming to solve the design problem of pitch function in small-tonnage wheeled cranes. It includes: a pilot unit, an operator's cab pitch control valve installed on the pilot unit's hydraulic circuit, and an operator's cab pitch cylinder connected to the pilot unit's pitch control valve. The operator's cab pitch control valve is a three-position four-way solenoid valve with three valve positions and an inlet, a return port, a first outlet, and a second outlet. The first and second outlets are connected to the rod-side and rodless-side chambers of the operator's cab pitch cylinder respectively through an operator's cab pitch balance valve, used to control the extension and retraction of the operator's cab pitch cylinder to achieve the operator's cab pitch function. This utility model can achieve the operator's cab pitch function without adding an auxiliary pump, while simultaneously preventing the operator's cab from automatically falling and balancing and buffering the impact force of the operator's cab pitch cylinder through the operator's cab pitch balance valve.

The invention relates to the technical field of cranes, in particular to a rail gnawing prevention automatic deviation correction system for a container quay crane cart and a control method. The invention provides an automatic deviation correction method for preventing rail gnawing of a container quay crane cart. The method comprises the steps that distance data from cart wheels to the side face of a rail are collected; according to the distance data, calculating an actual deviation value of a center line of a cart pilot wheel relative to a track center line; the actual deviation value is compared with a preset target deviation value, and the speed difference between the sea side motor and the land side motor is calculated through PID control; the rotating speed of the motor is adjusted according to the speed difference, automatic deviation correction of the cart walking direction is achieved, deviation and rail gnawing are prevented, and the service life of a rail and wheels is prolonged.

This invention provides a method for replacing the main bearing of a TBM in a long-distance twin-tunnel, dual-track linkage system. It belongs to the field of tunnel construction technology. The method includes: after the left track continues excavation and the cutterhead surpasses the position of the right track cutterhead, a transverse channel is excavated between the left and right tracks to serve as the main bearing transport channel; simultaneously, the right track cutterhead is fixed, detached, the main unit is retracted, the inner and outer seals of the main drive are disassembled, and the slag collection hopper is removed. This invention uses a twin-tunnel, dual-track linkage method for TBM main bearing replacement. Compared with maintenance methods such as parallel pilot tunnels and inclined shafts, this main bearing replacement method has lower costs, a shorter replacement cycle, and less impact on the other track.

The invention relates to the technical field of pilot operated safety valve verification, and discloses a pilot operated safety valve clamping device which comprises a moving structure, a supporting frame, a pressurizing assembly and a guiding structure. A groove is formed in the moving structure; the supporting frame is arranged on the moving structure; the pressurizing assembly is arranged in the groove in a sliding mode, and a guide groove is formed in the pressurizing assembly; the two ends of the guiding structure are arranged in the moving structure, and part of the guiding structure is arranged in the guiding groove and slidably connected with the pressurizing assembly. According to the pilot operated safety valve clamping device, by arranging the guide structure, slidable adjustment of the pressurizing assembly on the moving structure is achieved, and when a pilot operated safety valve is prepared to be inspected, the distance of the pressurizing assembly in the groove can be adjusted front and back, so that connection between the pilot operated safety valve and the pressurizing assembly is facilitated; and the pilot operated safety valve does not need to be moved, toppling of the pilot operated safety valve during moving is avoided, and the overall operation convenience and safety of the clamping device are improved.