270 results about "SUSPENDING VEHICLE" patented technology

The invention belongs to the technical field of path planning, and particularly relates to an unmanned vehicle path planning method and system based on the Internet of Things, and the method comprises the steps: determining all passable paths of a current monorail hoist; determining the passing difficulty of each path according to the length of each passable path, the gradient of each ramp on each path, the turning radius and turning angle of each curve on each path, the number of turnouts required to be wrenched when the current monorail hoist runs on each path and the number of air doors required to be opened; and according to the angle variation and the variation time of each air door, determining the influence degree of the current monorail hoist on the ventilation system when the monorail hoist operates on each path, and determining an optimal path by combining with the passing difficulty. According to the invention, the operation efficiency of the monorail hoist is improved, the operation cost is reduced, the influence on the mine ventilation stability is reduced on the premise of ensuring the safe passing of the monorail hoist, and the safety of the underground operation environment is improved.

A mining narrow-gauge flat crane comprises a flat car frame and a lifting arm, the lifting arm is installed on the upper portion of the flat car frame, at least two sets of wheel pairs which are arranged in a front-back spaced mode are arranged at the bottom of the flat car frame, the wheel pairs are connected to a rail of a haulage roadway in a sliding mode, and telescopic supporting leg structures are arranged on the front side and the rear side of the flat car frame. The middle of the left side and the middle of the right side of the flat car frame are each provided with a propping column, the two propping columns are arranged in a bilateral symmetry mode, the flat car frame is further provided with a hydraulic pump station and a console, the underground power source provides power for a motor of the hydraulic pump station, and the hydraulic pump station provides hydraulic power for the lifting arm, the telescopic supporting leg structure and the propping columns. And the console controls the lifting arm, the telescopic supporting leg structure and the propping column to act respectively. The lifting device is flexible in lifting position, meets the requirement of lifting at various positions, has a car stabilizing function during lifting, is high in safety, and can greatly reduce the difficulty of manually loading and unloading materials and reduce the labor intensity of workers.

The invention belongs to the technical field of coal mine auxiliary transportation, and discloses a monorail hoist yard unattended system and method.The monorail hoist yard unattended system comprises a multi-section container type mine car, a special lifting appliance, a hook picking and hooking device, a precise positioning car arrester, a righting mechanism and a car pusher, and the special lifting appliance can grab or release the container type mine car; the unhooking and hooking device is used for automatically connecting or separating the front section and the rear section of the container type mine car, the precise positioning car arrester is used for adjusting the position before the front section and the rear section of the container type mine car are separated, and the righting mechanism is used for righting the container type mine car when the special lifting appliance releases the container type mine car. The center of the container type mine car is kept consistent with the centralizing center of the centralizing mechanism, and the car pusher is used for pushing the container type mine car to a designated area. According to the invention, the effects of automation, unmanned operation and less manpower in the single-rail crane conveying process can be realized, the conveying efficiency is improved, and the traditional material distribution mode is thoroughly changed.

The invention discloses a movable hydraulic supporting structure for an engineering truck, and relates to the technical field of crane supporting. Comprising a telescopic transverse moving part, a vertical telescopic part is installed on the telescopic transverse moving part, and the vertical telescopic part is used for supporting a crane in a telescopic mode; a horizontal supporting leg part is mounted on the vertical telescopic part; the vertical telescopic part is used for controlling the horizontal supporting of the horizontal supporting foot part; an anti-damage limiting part is mounted on the telescopic transverse moving part; the anti-damage limiting part is used for preventing the vertical telescopic part from being recycled in advance; the vertical telescopic part can be used for detecting the horizontal state of the ball sleeve, it is guaranteed that the sliding supporting foot disc can be supported on the ground or a sleeper in the horizontal state, the supporting stability of the structure can be guaranteed, and the problem of unstable supporting such as slipping caused by inclination of the sliding supporting foot disc is solved. The problems that according to an existing hydraulic supporting structure, a transverse moving part is directly recycled, irreversible damage and even breaking are easily caused to a vertical supporting hydraulic cylinder, and automatic safety limiting is inconvenient are solved.

The invention discloses a turnover hoisting device and method for steel pipe pile construction, and relates to the field of hoisting devices.The turnover hoisting device comprises a crane chassis, a cab is movably installed on the crane chassis, a seat is arranged in the cab, a hoisting arm is installed on one side of the cab, and a hoisting hook is installed on the hoisting arm; an emergency push-out device is mounted on the cockpit; and an automatic rotating device is mounted on the emergency push-out device. It needs to be explained that in the embodiment of the invention, through the arrangement of the emergency push-out device, when a steel pipe pile is hoisted for turning over operation, if the inclination angle of the crane chassis is large, the driving push frame drives the seat out of the cab through the sliding push plate, so that a driver can be separated from the cab in time, and meanwhile, under the torsional force of the rotating torsional spring, the driver can turn over the steel pipe pile. The seat is rotated on the supporting shaft, so that the seat is rotated to a state perpendicular to a cab, and a driver can face an open position, so that the driver can quickly escape.

The invention relates to an inclined shaft TBM disassembly construction method. The method comprises the following steps that firstly, an adjustable supporting frame is arranged at the bottom of an inclined shaft; step 2, reversely disassembling each component according to the sequence of a cutterhead driving part, a main bearing, a shield and a thrust cylinder; thirdly, in the disassembling process, a hydraulic jacking device and a monorail hoist work cooperatively to conduct component hoisting; fourthly, a temporary transportation channel is formed in the side wall of the inclined shaft; fifthly, after every two parts are disassembled, steel arch supports are erected in the corresponding areas; and sixthly, the disassembled parts are transported outwards through a wheel type transport vehicle along an inclined shaft track. Through cooperative control of the multi-stage supporting system and the dynamic disassembling sequence, the stability of the inclined shaft structure is effectively guaranteed, the disassembling efficiency and the transportation safety of large-size components are remarkably improved by combining the design of the transportation channel with precise positioning and optimization of a braking system, and the method is suitable for rapid disassembling and transferring operation of TBM equipment in inclined shaft tunnel engineering.

The invention relates to the technical field of hoisting equipment, and provides a lithium battery unmanned monorail hoist which comprises a suspension track and a hoist assembly, the hoist assembly comprises a car body unit, a hoisting and conveying unit and a suspension unit, the suspension unit is arranged on the suspension track, and the suspension unit comprises a power suspension unit and a load suspension unit. The vehicle body unit is connected with the power suspension unit, the hoisting conveying unit is connected with the load suspension unit, the load suspension unit comprises a suspension beam, load frames, load wheels and guide wheels, the load frames are arranged at the two ends of the suspension beam and comprise mounting ends on the two sides of a suspension rail, and the guide wheels and the load wheels are arranged at the mounting ends. The guide wheels abut against the guide side faces of the suspension rails, and the load-carrying wheels abut against the load-bearing faces of the suspension rails vertically. The problems that in the prior art, when a traveling wheel body of a suspension type rail crane faces a heavy load, due to the fact that the contact face is incomplete, the service life of the wheel body and components of the wheel body is prolonged, and the operation stability is poor are solved.

The present invention discloses a pipeline laying device for road construction for municipal construction, including a crane arm, a suspension rope 1 is fixedly connected below the crane arm, a load-bearing plate is fixedly connected below the suspension rope 1, a mounting plate 1 is connected below the load-bearing plate, and a mounting plate 2 is connected below the mounting plate 1. The present invention is designed with a sliding rod, and the installed road can be clamped by a clamping arm 2 by stretching the sliding rod, and the two clamping arms are aligned in parallel on the mounting plate 2, so that the installed pipeline located in the front is aligned with the pipeline to be installed clamped at the rear side when tightening, which is convenient for subsequent operation. The sliding rod is further stretched to retract the adjustment plate into the interior of the mounting plate 2, thereby reducing the distance between the pipeline to be installed at the rear and the installed pipeline, thereby directly completing the docking, improving the speed of pipeline installation, and avoiding human traction, improving the safety of on-site construction, and reducing safety hazards.

The present invention discloses a mine monorail crane, which relates to the technical field of monorail crane equipment and includes an I-beam rail, a carriage distributed below the I-beam rail, and a diesel main engine box. A plurality of groups of connection mechanisms for connecting the carriage and the diesel main engine box are arranged on the outer side of the I-beam rail; a braking mechanism for braking is arranged inside each group of connection mechanisms; a buffer mechanism is connected between each group of connection mechanisms; the connection mechanism drives the carriage and the diesel main engine box to move along the bottom of the I-beam rail. In case of an emergency, the braking of the braking mechanism and the buffering of the buffer mechanism are used to protect the equipment against inertia. The mine monorail crane disclosed by the present invention has the effects of multi-stage braking, high stability and safety.

The invention relates to the technical field of special vehicle manufacturing, in particular to a crawler-type fork crane which comprises a vehicle body, and a crawler assembly is arranged on the lower portion of the vehicle body. The fork lifting device is mounted on one side of the vehicle body, and the fork lifting device is used for driving goods to do lifting motion; the hoisting device is rotationally mounted at the upper end of the vehicle body and is used for driving the cargoes to move in different directions and to ascend and descend in a larger amplitude; the supporting leg mechanism comprises a plurality of supporting legs, the supporting legs can stretch out and draw back in the vertical direction, the lower end faces of the supporting legs are connected with air bags, and each supporting leg is provided with an air pump for inflating and deflating the air bags. The fork crane has the advantages that the operation steps of the fork crane during operation are simplified, and then the efficiency of engineering operation is greatly improved.

The invention relates to the technical field of engineering equipment, and discloses a guardrail breakdown van. Comprising a device body and a drilling rig mechanism, the top of the device body is provided with the drilling rig mechanism, one side of the drilling rig mechanism is provided with a crane, the top of the device body is fixedly connected with an oil-gas separator, and one side of the oil-gas separator is provided with a radiator. An original engine of an automobile is utilized, additional installation is not needed, normal walking of the automobile is guaranteed, energy is directly supplied to the drilling frame mechanism, the working efficiency is greatly improved, in the aspect of heat dissipation, the drilling frame mechanism adopts a double-rotation and double-transverse-movement mode, a base is flexible, and large-range transverse movement and 360-degree rotation can be achieved; the drilling mechanism and the piling mechanism are installed in an interchange mode, the turning step is reduced, the truck-mounted crane is telescopic and can hoist goods of 3 tons, the truck is stabilized during working, space is saved when the truck-mounted crane does not work, and convenience and high efficiency of first-aid repair operation are improved in an all-around mode.

The utility model discloses a self-lifting expansion container square cabin, which relates to the technical field of square cabin equipment, and comprises a square cabin main body and four lifting support components, two lifting support components are rotatably arranged at the front end of the square cabin main body, and the other two lifting support components are rotatably arranged at the rear end of the square cabin main body. The lifting supporting assembly comprises a mounting frame, a lifting supporting piece and a pair of rotating connecting pieces, the rotating connecting pieces are arranged on the shelter body, the lifting supporting piece is arranged on one side of the mounting frame, the other side of the mounting frame is rotatably connected with the rotating connecting pieces, and each rotating connecting piece comprises a fixing shaft, a plug pin and a pair of connecting bases. The problems that under the condition that an existing square cabin is not provided with a large crane or a crane, loading and unloading are difficult, and supporting balance cannot be adjusted on the non-paving uneven ground are solved.

The application discloses a long-distance moving method of a crushing station and belongs to the field of crushing devices. The long-distance moving method of the crushing station comprises the following steps: formulating a long-distance moving scheme of the crushing station; a crane and a forklift enter the site according to the site requirements; a detachable minimum functional unit of the crushing station is connected with a steel wire rope of the crane for hoisting and dismounting; the detachable minimum functional unit is loaded on a vehicle for long-distance transportation; the site for installing the crushing station is prepared; the crane and the forklift enter the site according to the site requirements; the detachable minimum functional unit is dismounted, the detachable minimum functional unit of the crushing station is connected with the steel wire rope of the crane, and the detachable minimum functional unit is combined and installed; and the crushing station is debugged. The whole crushing station is modularly disassembled into large detachable minimum functional units, each large detachable minimum functional unit is relatively complete and independent in structure and function, after long-distance transportation, modular installation is carried out, and the precision and quality of equipment reassembly are ensured; through the application of a two-dimensional code label, intelligent management and tracking of the detachable minimum functional unit of the crushing station are realized, and work efficiency is improved.

1. The name of the product of this design: train track building blocks. 2. Purpose of this design product: This design product is used for entertainment equipment. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design key points: 3D image of component 1. 5. The rear view of component 8 is the same as the front view of component 8, and the rear view of component 8 is omitted; the right view of component 8 is the same as the left view of component 8, and the right view of component 8 is omitted. 6. This design product is sold and used as a complete set, in which component 1 is a train platform, component 2 is a forklift, component 3 is a power vehicle, component 4 is a truck, component 5 is a crane, component 6 is a transport vehicle, component 7 is a rectangular road sign, and component 8 is a triangular road sign.

The utility model belongs to the field of coal mine transportation, and discloses a monorail crane running posture adjusting device for a large deformation roadway, which comprises a running track, running hanging wheels and a carriage body, the running hanging wheels are clamped on the running track in a sliding manner, and the carriage body is connected with the running hanging wheels through connecting pieces; an adjusting bin is arranged in the carriage body, the adjusting bin comprises an adjusting body slidably connected into the carriage body, hydraulic cylinders are arranged on the two sides of the adjusting body, and piston rods at the output ends of the hydraulic cylinders abut against the peripheral wall of the adjusting body; one end of the carriage body is connected with a driving headstock, the driving headstock comprises a cockpit, a driving operation table, a monitoring unit and a hydraulic adjusting unit, the driving operation table is arranged in the cockpit, and the monitoring unit is arranged on the cockpit and used for monitoring the running posture; posture adjustment in the running process of the monorail hoist can be achieved, and a carriage body of the monorail hoist is prevented from being scratched and collided with a deformed roadway side and a raised bottom plate.

The utility model discloses a hoisting device for an MIC (Microphone) modular component, which comprises a mounting seat, a hoisting device and a hoisting device, the lifting rod is vertically arranged at the upper end of the mounting seat; the locking ring is arranged at the upper end of the lifting rod and is used for being connected with a crane; the cross beams are horizontally arranged on the periphery of the mounting seat; the sliding block is connected to the cross beam in a sliding mode in the length direction of the cross beam; the hanging ring is arranged at the lower end of the sliding block and used for being connected with a prefabricated part. And the driving mechanism is arranged in the mounting seat and is used for controlling the sliding blocks to slide synchronously. The lifting device has the advantages that the position of the lifting ring can be adjusted by arranging the sliding block with the adjustable position, the lifting device can be suitable for prefabricated parts of different specifications, and practicability is improved.

The utility model discloses a transportation and installation system for pipeline arrangement in a building, the transportation and installation system comprises a crane, a door-shaped steel frame and a roller transportation structure, the door-shaped steel frame is fixed at the upper part of a concrete structural column of the building, and the roller transportation structure is installed at the upper end of the door-shaped steel frame. The door-shaped steel frame comprises two groups of steel columns, a steel frame cross beam and an inclined support, two ends of the steel frame cross beam are respectively connected with the top ends of the two groups of steel columns to form the door-shaped steel frame, the inclined support is obliquely fixed between the steel columns and the steel frame cross beam, and the steel frame cross beam is connected with the steel columns through the inclined support to form a triangular stable structure. The door-shaped steel frame is fixed on the concrete stand column of the building structure, so that the pipeline load on the door-shaped steel frame is directly transmitted to the concrete stand column from the door-shaped steel frame, the problem that the bearing capacity of a roof is insufficient is solved, horizontal pipeline transportation can be achieved through the idler wheel transportation device, and pipeline transportation efficiency is improved.

The invention provides a braking device for a freight electric crane of a transporter, which belongs to the technical field of freight hoisting equipment and comprises a crane braking assembly, a front-end handle assembly arranged on the crane braking assembly and used for controlling a front-end crane and a rear-end handle assembly arranged on the crane braking assembly and used for controlling a rear-end crane. The braking device is safe and reliable in braking of the electric crane, movement of the electric crane on the crane guide rail is not affected through manual operation, the braking device of the transport electric crane of the transporter can be arranged in a bilateral symmetry mode in a cargo hold according to the arrangement position of the electric crane in the cargo hold, and the corresponding configuration is selected according to the structural layout.

The utility model discloses a railway vehicle reconnection test simulation connecting device, which comprises a head vehicle MCG1 and a tail vehicle MCG2 of railway vehicles in the same group, and a microcomputer reconnection connector socket on the left side of the two-position end of the head vehicle MCG1 is connected with a microcomputer reconnection connector socket on the left side of the two-position end of the tail vehicle MCG2 through a seven-core reconnection connector; the microcomputer reconnection connector socket on the right side of the two-position end of the head vehicle MCG1 is connected with the microcomputer reconnection connector socket on the right side of the two-position end of the tail vehicle MCG2 through a seven-core reconnection connector. According to the utility model, the tediousness and complexity of a reconnection test are reduced, the experiment efficiency is improved, the hoisting cost is saved, and meanwhile, the safety risk caused by crane operation is reduced.

The utility model discloses an empty car detection device which is characterized in that a detection device is connected to the bottom end of a seat of a monorail hoist, when a person gets on the car, the seat is pressed, a fixing plate at the bottom end of the seat is pressed downwards, a reset spring and the top end of a sleeve are extruded to support the fixing plate, and when the fixing plate is pressed downwards, a sliding block is connected with a fourth connecting rod, so that the sliding block is fixed; the fourth connecting rod is connected with a third connecting rod, the third connecting rod is driven to enable the joint of the first connecting rod and the second connecting rod to displace, so that a sliding plate moves downwards, and the bottom end of the sliding plate touches a contact of a sensor; a signal is transmitted to a remote terminal through the signal transmitter, the monorail hoist is started after the signal is received, when a person gets off, the reset spring can jack up the fixing plate and synchronously drive the detection device to reset, the monorail hoist can be started only after the person gets on and passes detection confirmation, and meaningless electric energy waste caused by empty cars is avoided.

Techniques for assuring safety in operations of self-steering suspended vehicles operating on an elevated track are described Disclosed is a vehicle motion unit comprising wheel assemblies with sensing units to detect wheel set positions relative to a reference element on the track. An actuator may perform corrective actions based on the sensing unit determining that there is a misalignment either in between a leading wheel set and a trailing wheel set or within a single wheel set. A control unit receives signals from the sensing units, process the signals to determine misalignments, and triggers the corrective actions. For additional safety, the elevated track is provided with a channel formed by a vertical guide wall and a supplementary guide rail near track split junctions. The system includes mechanisms for continuous monitoring of wheel alignment and physical constraints for wheel movement.

This invention discloses an OTA upgrade method and system based on vehicle-side fault analysis. Specifically, it discloses an OTA upgrade method based on vehicle-side fault analysis, which can analyze faults in real time during the OTA upgrade process, proactively warn of risks, dynamically suspend high-risk tasks, and achieve precise group repair. The method includes: the vehicle side collecting fault information in real time during the upgrade process and reporting it to the cloud; the cloud receiving the fault information and extracting features through an analysis model to obtain analysis results; subsequently, triggering a warning based on the analysis results; and suspending vehicles that have not yet undergone the upgrade based on the analysis results. This method can achieve rapid identification, proactive interception, and targeted repair of OTA upgrade faults, effectively avoiding the risk of large-scale upgrade failures and significantly improving the security, reliability, and overall efficiency of OTA upgrades.

The utility model discloses a carrying system for skid-mounted substation equipment, which comprises a flat car, a winch, a flat car tail end roller shaft, a flat car inner roller shaft, the skid-mounted equipment and a steel wire rope, when the equipment is mounted, the steel wire rope of the winch is connected with a front end lifting lug of the skid-mounted equipment, then the winch is tightened, and the equipment can be mounted on a vehicle. When the equipment is unloaded, the flat car can be accelerated by loosening the steel wire rope, so that the skid-mounted equipment is separated from the flat car, and the unloading purpose is achieved. The system does not need to consider the problem of hoisting space of a crane and needs an open space at the top of the equipment, so that the space requirement of hoisting equipment and the equipment of the crane are reduced, and the efficiency is greatly improved.

The present application belongs to the technical field of auxiliary transportation of coal mine, and discloses a kind of unmanned system and method of monorail crane field, system includes being provided with multiple container type mine car, special lifting appliance, unhooking and hooking device, accurate positioning car stop, righting mechanism and car pusher, special lifting appliance can grab or release the container type mine car, unhooking and hooking device is used to automatically connect or separate front and rear two section container type mine car, accurate positioning car stop is used to separate front and rear two section container type mine car and carry out position adjustment, righting mechanism is used to right when special lifting appliance releases container type mine car, so that the center of container type mine car is consistent with the righting center of righting mechanism, car pusher is used to push container type mine car to specified area.The present application can realize the effect of automation, unmanned and few people during monorail crane operation, improve the efficiency of operation, and completely change the traditional material distribution mode.

The weight shifting device for bridge construction comprises a bearing frame, a towing hook is arranged at one end of the bearing frame, a plurality of moving wheels are installed at the bottom of the bearing frame, and each moving wheel is in transmission connection with a driving motor; sliding rail assemblies are arranged on the two sides of the bearing frame correspondingly, the two sliding rail assemblies are arranged in parallel, the bearing frame is slidably connected with a plurality of supporting bases through the sliding rail assemblies, bearing plates are fixedly installed between the two oppositely-arranged supporting bases located on the two sides of the bearing frame, and the number of the bearing plates is not less than two. The distance between every two adjacent bearing plates is adjusted through a supporting base. A positioning assembly is installed on the supporting base, and the supporting base is in limiting fit with the bearing frame through the positioning assembly. The four moving wheels can be driven by the four driving motors correspondingly, and steering operation can be achieved within a small range; the bearing frame is of a rectangular frame structure, and by reducing the height of the gravity center of a shifted object, the situations of rollover and the like are prevented, so that the defects when the crane is used for shifting the object are overcome.

The invention relates to delivery technology, in particular to an article delivery and sorting system comprising an article supply location comprising a plurality of articles, and an elevated track network having a plurality of track sections. A self-guided self-propelled suspended vehicle travels bi-directionally along a plurality of track portions. The suspended vehicle has a first position in which a carrier carrying at least one selected item is engaged with the suspended vehicle, and a second position in which the carrier is disengaged from the suspended vehicle. The system also includes a controller. The controller determines a first delivery location among the plurality of delivery locations to deliver the selected item using the suspension vehicle according to the destination determined for the selected item. The controller also directs delivery of the carrier at the first delivery position by manipulating the suspended vehicle from the first position to the second position.

The application provides a portal shield screen device, belonging to the technical field of highway equipment. The portal shield screen device comprises a stand, a first end beam, a spliced beam, a second end beam, a shield screen device and a connecting mechanism. The first end beam, the spliced beam and the second end beam in the portal shield screen device are small individual units, which can be stacked and transported by small vehicles and hoisted by small cranes, so that the assembly between the first end beam, the spliced beam and the second end beam can be realized, and the assembly cost is reduced. In addition, according to the width of the highway, the spliced beam can be flexibly increased or decreased, and the assembly between the first end beam and the spliced beam, the spliced beam and the second end beam can be quickly realized by the connecting mechanism, so that the applicability is stronger, and better use experience is brought to the user.

The present application relates to the technical field of data processing, and more particularly to an intelligent scheduling method and system for an unmanned single-track hoist in a mine. The method comprises the following steps: scanning the whole mine roadway by a patrol vehicle to construct a three-dimensional topological map; when the vehicle enters a blind area, a ground scheduling server generates a shadow vehicle according to the running state data of the vehicle, and generates an offline strategy package in combination with the historical running data of the vehicle under standard working conditions and the map attributes of the blind area section; the vehicle obtains a real trajectory after resuming communication when it drives out of the blind area; a vehicle aging factor and a corresponding position slope angle of the shadow vehicle are introduced to calculate a net acceleration to iteratively deduce the position of the shadow vehicle, and the total length of the safety envelope is synchronously calculated; the aging factor is corrected based on the residual error between the real trajectory and the deduced position, which is used to iteratively optimize the deduction of the shadow vehicle and safety warning when the vehicle enters the blind area next time. The present method can easily grasp the dynamic position of the vehicle during network interruption by constructing a shadow vehicle, and greatly improves the safety under complex terrain.

The utility model discloses a longitudinal rail changing crane capable of walking on steel rails, which comprises a walking frame, four wheel assemblies, two suspension arm assemblies and a manipulator assembly, the four wheel assemblies are distributed below the walking frame in a dot matrix manner, and the two suspension arm assemblies are symmetrically arranged at the front end of the walking frame. The suspension arm assembly comprises a large mechanical arm, a small mechanical arm, a joint body, a large arm rotating air cylinder, a large arm oscillating air cylinder and a small arm oscillating air cylinder, the large mechanical arm is connected with the small mechanical arm through a pin shaft, the manipulator assembly is installed at the tail end of the small mechanical arm, the root of the large mechanical arm is connected with the joint body through a pin shaft, and the driving end of the large arm oscillating air cylinder is connected with the large mechanical arm through a pin shaft; the driving end of the small arm oscillating cylinder is connected with the mechanical small arm through a pin shaft; the crane can meet the working requirements of track maintenance and track construction along the track, is higher and more flexible in overall maneuverability, is not limited in walking range, synchronously and independently operates the tracks on the two sides of the track, and is high in working efficiency, simple in overall structure, light in overall weight, low in investment cost and simple and convenient to operate.