1798results about "Endless track vehicles" patented technology

The invention discloses an early warning method and device for climbing instability of a crawler unmanned vehicle and a medium, and relates to the technical field of unmanned vehicle climbing control. The early warning method comprises the steps that a digital twin model of the tracked unmanned vehicle is constructed, the digital twin model fuses a motor dynamic model and a whole vehicle dynamic model, and virtual scene data is generated; real-time data of a multi-source sensor of the tracked unmanned vehicle are obtained, wherein the real-time data comprise vehicle posture data, environment data and driving system data; and constructing a time convolutional network prediction model based on transfer learning, performing pre-training by using virtual scene data as source domain data, and performing fine tuning by using real-time data as target domain data to form a target domain prediction model. And inputting the current data into the target domain prediction model, and outputting a predicted vehicle state parameter prediction sequence. According to the vehicle state parameter prediction sequence and a preset safety threshold value, the instability risk is evaluated, an early warning signal is sent out, and the generation logic of the early warning signal is evaluated and optimized through an early warning performance loss function.

The invention relates to the technical field of vehicle safety auxiliary devices, and discloses an automobile multifunctional crawler-type anti-skid escape device which comprises tires, electric hydraulic cylinders and four sets of independently-controlled driving crawlers. Wherein the two groups of driving tracks are transversely arranged at the edge positions of the front end and the rear end of the automobile chassis to form a transverse track assembly; the vehicle body is lifted through the transverse track assembly, key parts are prevented from being eroded by accumulated water, and water flow impact is relieved; and thirdly, by means of independent control of the four sets of caterpillar bands, the vehicle is endowed with flexible maneuvering functions such as pivot steering and transverse movement, and accurate parking in a narrow space and obstacle avoidance are assisted. The whole structure is designed based on vehicle model customization, and an active and multifunctional driving safety guarantee means is provided for a driver on the premise that an original vehicle framework is not changed.

The invention relates to the technical field of agricultural machinery, in particular to a rotary gravity center regulating crawler platform for hills and mountains, which sequentially comprises a crawler chassis assembly, a gravity center regulating assembly and a functional module mounting platform from bottom to top, the gravity center adjusting layer is installed on the chassis rack and located in the space between the crawler belts on the two sides, the gravity center adjusting layer is composed of a supporting base, a slewing bearing module, a linear lead screw module, a battery balancing weight and a machine shell, and the balancing weight is preferably a power battery pack; and the functional module mounting platform is fixed at the upper end of the gravity center adjusting assembly. By adjusting the angular and radial distribution of the counterweights, the center-of-gravity position of the whole machine under the working conditions of cross slopes, longitudinal slopes and obstacle crossing is changed, the stability and driving safety of the crawler belt platform in complex terrains of hills and mountains are improved, and the crawler belt platform can be provided with different functional modules according to operation objects. The method is suitable for various hilly and mountainous region agriculture and engineering application scenes.

The present invention provides for a crawler type vehicle (10) configured for traveling in a suspended manner especially headlong at a structure, wherein the vehicle (10) exhibits a plurality of suspension elements configured for suspending the vehicle (10) and configured for coupling the vehicle (10) to the structure, and at least one drive unit (11, 11a, 11b, 11c) configured for circumferential driving motion and accommodating a first circumferential track and a second circumferential track having a different circumferential shape / contour than the first circumferential track. The present invention provides for a method of driving a crawler type vehicle (10) for traveling in a suspended manner especially headlong at a structure.

A mobile platform and a usage method for the mobile platform. The mobile platform comprises a platform body (10) and crawler mechanisms (20), wherein the crawler mechanisms (20) are provided on two opposite sides of the platform body (10); each crawler mechanism (20) comprises a plurality of chain links (26), each chain link (26) comprising a chain link base (2100) and a magnetic attraction module (2200); the chain link bases (2100) on the plurality of chain links (26) are connected end to end and form an annular crawler body (27), and the magnetic attraction modules (2200) are detachably connected to the chain link bases (2100); and a plurality of types of magnetic attraction modules (2200) are provided, and different types of magnetic attraction modules (2200) are configured to provide different magnitudes of magnetic attraction forces, such that the mobile platform can select, on the basis of different degrees of concavity and convexity of a working face (W), different types of magnetic attraction modules (2200) to be connected to the crawler body (27), and the magnetic attraction forces generated by the crawler mechanisms (20) can reduce the risk of the mobile platform falling off from the working face (W), and also enable the mobile platform to operate smoothly on the working face (W).

The invention provides a photovoltaic panel automatic laying robot, and belongs to the technical field of photovoltaic panel installation, and the photovoltaic panel automatic laying robot comprises a frame main body which is used as an installation main body of the laying robot; the supporting frame is fixedly installed at the upper end of the frame body, and the six-axis mechanical arm is fixedly installed on the supporting frame. The adsorption mechanism is fixedly mounted on the six-axis mechanical arm, and the adsorption size of the adsorption mechanism can be adjusted to adapt to photovoltaic panels of different specifications; the six-axis mechanical arm is used for adjusting the position of the photovoltaic panel and laying the photovoltaic panel through six-axis adjustment; the plate storage mechanism is mounted at the front end of the frame main body and is used for storing a photovoltaic plate to be laid; the lifting mechanism is rotationally installed at the front end of the frame body and used for driving the plate storage mechanism to ascend and descend. The overturning air cylinder is used for adjusting the angle of the lifting mechanism so that the adsorption mechanism can conveniently adsorb and grab the photovoltaic panel. According to the invention, the back-and-forth times of the equipment are reduced through the integrated plate storage mechanism, and the adsorption mechanism with adjustable size is used to adapt to photovoltaic plates with different specifications.

The invention discloses a belt-disengaging prevention combined control method and device for an electric crawler and a medium, and relates to the technical field of crawler control. The method comprises the following steps: S1, acquiring multi-source sensing data of the electric crawler, wherein the multi-source sensing data at least comprises vehicle attitude data, crawler tension data, crawler sag data, driving wheel speed data and environment sensing data which take a quantum inertial sensor as a reference; and S2, carrying out space-time alignment and consistency correction on the multi-source sensing data, and fusing the corrected data by adopting an adaptive filtering algorithm to obtain a real-time fusion state quantity of the vehicle. And S3, on the basis of the real-time fusion state quantity, a comprehensive risk index is calculated through multi-dimensional feature coupling analysis, and a current off-band risk level is determined. And S4, a preset hierarchical control strategy is matched according to the determined belt disengaging risk level, a combined control instruction is generated and sent to an execution mechanism of the vehicle, and the execution mechanism comprises a motor driving system and a mechanical tensioning system.

The invention discloses a transmission tower angle steel electromagnetic pulse fastening system, which belongs to the technical field of transmission tower angle steel fastening, and is characterized in that a track subsystem is rigidly connected with an operation table to realize movement and position adjustment in an operation environment; the charging control platform comprises a power supply device, a capacitor, an SCR power voltage regulator and voltage sensors, the power supply device is connected with the capacitor, and the voltage sensors are connected to the two ends of the capacitor; the charging control platform regulates and controls the charging process of the capacitor through the SCR power voltage regulator; the electromagnetic pulse generation subsystem is connected with the charging control platform, and the electromagnetic pulse generation subsystem is used for generating electromagnetic pulses to achieve fastening operation of angle steel of the power transmission tower; the monitoring feedback subsystem is used for monitoring the operation state of the transmission tower angle steel electromagnetic pulse fastening system in real time. The electromagnetic pulse technology is combined with the field of angle steel reinforcement, and the problems that existing electromagnetic pulse crimping equipment is inconvenient to move, depends on an external power supply, is inaccurate in charging control, and is difficult to monitor the running state in real time are solved.

The invention relates to the technical field of mineral exploration, in particular to a high-precision electromagnetic method mineral exploration device suitable for complex terrains, which comprises a self-adaptive mobile frame, and an electromagnetic detection module, a data processing and transmission module, a composite energy module and a central control module are arranged on the self-adaptive mobile frame. According to the high-precision electromagnetic method mineral exploration device suitable for the complex terrain and the detection method, through the combined design of the track assembly, the electric hydraulic rod and the shock absorber, laser radar terrain scanning and path planning are utilized, and autonomous movement and horizontal keeping of the complex terrain are adapted; non-contact electromagnetic detection is adopted, deep and shallow detection is covered by a multi-frequency signal generator, the anti-interference capability is improved according to electromagnetic shielding and adaptive filtering processing, mineral product space distribution and reserve estimation is realized through convolutional neural network imaging, and false positive signals are eliminated through iterative optimization.

The invention belongs to the technical field of rubber composite materials, and provides a low-noise rubber track composite material and application thereof. A double-filler synergistic damping design of montmorillonite / silicon carbide composite filler and carbon black grafted with a damping functional polymer is adopted, montmorillonite is loaded on the surface of silicon carbide in an intercalation-stripping composite structure, the stripping degree is 60-90%, the polymer is grafted on the surface of carbon black through a silane coupling agent, the grafting density is 0.3-0.8 chains / nm < 2 >, the mass ratio of the two fillers is 1.5: 1-3: 1, and the damping functional polymer is grafted on the surface of carbon black through a silane coupling agent. And a dual noise reduction mechanism in which rigidity enhancement and viscoelastic damping are cooperated is formed. The loss factor tan delta is larger than or equal to 0.15 in the frequency range of 20-1000 Hz, and compared with a conventional material, the noise is reduced by 10-30 dB. The invention solves the technical problems of poor damping effect and weak noise control capability of the traditional rubber track material, and has wide application value in the fields of engineering machinery tracks, automobile tires, shock absorption and noise reduction materials and the like.

The embodiment of the utility model provides rail welding equipment for both roads and railways. The rail welding equipment for both roads and railways is characterized in that a loading platform drives the rail welding equipment for both roads and railways to walk on railways or roads through a chassis; the auxiliary protection device covers the outer side of the welding machine, so that the welding machine is prevented from being in direct contact with the ground in the process of hoisting or putting down the welding machine by the hoisting device; meanwhile, when the hoisting device drives the welding machine to transfer, the welding machine is prevented from being in hard contact with other equipment, and the service life of the welding machine is prolonged; the rail lifting device is arranged to lift the steel rail to be in butt joint with the welding machine, when the welding machine conducts welding operation, it is guaranteed that the relative positions of the welding machine and the steel rail are fixed, and the welding effect is improved; one end of the hoisting device is rotationally connected to the frame, the other end of the hoisting device is connected with the welding device, the welding device is hoisted and moved, the workable range of the welding device is expanded, and the equipment applicability is improved.

The tomato picking robot comprises the crawler-type terrain self-adaptive walking device, and the device comprises a walking vehicle body, a driving mechanism, a driving mechanism, a driving mechanism and a driving mechanism, the self-adaptive walking mechanism comprises a driving part and a plurality of walking parts, the multiple walking parts are installed at the bottom of the walking vehicle body, and each walking part comprises a driving crawler wheel, a driven crawler wheel and a crawler belt wrapping the driving crawler wheel and the driven crawler wheel in a tensioning mode; the driving crawler wheels are pivoted to the side face of the walking vehicle body. Racks are arranged on the inner wall of the crawler belt. The driving crawler wheel and the driven crawler wheel are connected through a connecting piece; the robot angle adjusting mechanism is mounted at the top end of the walking vehicle body, connected with the picking robot and used for adjusting gravity center balance between the picking robot and the walking vehicle body to avoid dumping caused by gravity center unbalance; and the horizontal sensing mechanism is installed on the walking vehicle body, connected with the robot angle adjusting mechanism and used for detecting the inclination angle of the vehicle body and starting the robot angle adjusting mechanism when the inclination angle of the vehicle body reaches a set value.

The invention belongs to the technical field of tunnel construction, and particularly relates to tunnel new energy operation equipment and an energy consumption control method thereof.The tunnel new energy operation equipment comprises a crawler chassis, the crawler chassis is driven by a motor, an electric telescopic arm is fixedly installed on the surface of the crawler chassis, and an external cable is slidably connected to the inner wall of the electric telescopic arm; the external cable is used for being connected with a power grid to provide electric energy for operation equipment. According to the tunnel new energy operation equipment and the energy consumption control method thereof, by arranging the energy storage driving control mechanism and the rotary conductive mechanism, seamless switching and 360-degree continuous rotation operation of the equipment in a power grid direct supply mode and a battery power supply mode are achieved when the equipment is used, and waste gas pollution in a tunnel is fundamentally eliminated. The system has the characteristics of zero emission, low noise and high energy utilization rate, the direct electric charge and ventilation energy consumption are remarkably reduced, the comprehensive energy consumption is reduced, and a brand new green and efficient equipment solution is provided for tunnel construction.

The invention relates to the technical field of robots, in particular to a safety inspection robot system which comprises a circumferential self-adaption mechanism, at least three radial self-adaption mechanisms and a guide walking mechanism, the circumferential self-adaption mechanism comprises at least three first telescopic rods which are sequentially hinged end to end, and the radial self-adaption mechanisms are connected with the guide walking mechanism. Each group of radial self-adaptive mechanism comprises at least two second telescopic rods which are matched for use, each second telescopic rod comprises a fixed cylinder, an actuating rod, an elastic element and a flexible rope, and the guide walking mechanism comprises a walking crawler belt, a walking wheel and a connecting rod structure; the circumferential self-adaptive mechanism surrounds the pipeline, the position of the actuating rod is adjusted, the elastic restoring force of the reset spring is combined, it is guaranteed that the radial self-adaptive mechanism is attached to the surface of the pipeline with constant and reliable pressing force all the time, and the stability of movement and detection is guaranteed; meanwhile, the walking wheels are driven by the connecting rod structures to rotate to be attached to the surface of the pipeline for obstacle crossing, and therefore continuous and comprehensive detection can be conducted.

The present disclosure provides a cleaning device, including a cleaning device body, a drive mechanism, a filtering mechanism, a liquid inlet portion, a liquid outlet portion, and a mode switching member. The drive mechanism is configured to generate a suction force to form a first water flow path with the liquid inlet portion, the filtering mechanism, and the liquid outlet portion. The mode switching member is configured to allow the cleaning device to be switched between a first motion state and a third motion state. Switching of the cleaning device between the first motion state and the third motion state includes switching of a second motion state. The cleaning device performs underwater cleaning in the first motion state, cleans a pool wall or a waterline in the second motion state, and performs water surface cleaning in the third motion state.

To provide an elastic crawler with a core metal enabling vertical movement of a roller to be suppressed to reduce vibration by increasing torsional rigidity of a guide protrusion with respect to a core metal blade part.SOLUTION: In an elastic crawler 10 with core metals having a configuration in which rollers 5 arranged along a ground roll on a top surface 22f of a guide protrusion 22, roller disengagement preventing protrusions 23A, 23B; 24A, 24B respectively protrude in opposite directions of a crawler circumferential direction from a pair of guide protrusion bases 21b, 21b of a core metal main body 21; the roller disengagement preventing protrusions 23A, 24A; 23B, 24B protruding in the crawler circumferential direction to protrude to each other toward opposed core metal main bodies 21 of adjacent core metals 20 mesh each other in a crawler width direction; and ribs 25, 25 are formed that connect the roller disengagement preventing protrusions 24A, 24B on the side of a core metal blade part among the roller disengagement preventing protrusions 23A, 24A; 23B, 24B meshing each other in the crawler width direction and the core metal blade parts 21c, 21c.SELECTED DRAWING: Figure 8

The utility model relates to the technical field of crawler belts, in particular to a crawler belt suitable for smooth surface operation, which comprises an annular bottom belt, and the surface of the inner wall of the annular bottom belt is provided with a clamping assembly used for being assembled with a walking wheel in a matched mode. A plurality of buffer pieces are fixed on the surface of the outer wall of the annular bottom belt; and anti-skid pieces are fixed to the outer side surfaces of the multiple buffer pieces correspondingly. According to the arrangement, the multiple buffering pieces are fixed to the surface of the outer wall of the annular bottom belt, impact on the surface of an object can be reduced in the running process, crawling noise and vibration are reduced, the anti-skid pieces are fixed to the surfaces of the outer sides of the buffering pieces, the friction force between the anti-skid pieces and the ground can be increased, and walking on the smooth surface of the object is achieved; therefore, the device is suitable for a complex terrain environment.

A method, a device, and a system for contactlessly measuring wear of one or more components of an undercarriage assembly of a work machine are disclosed. For example, a method includes identifying a component to be measured for wear by a wear measuring device comprising a first sensor and a second sensor; based on the component, selecting component information associated with the component for the wear measuring device; simultaneously measuring: by the first sensor configured based on the component information, a first wear distance from the first sensor to a first measurement surface of the component, and by the second sensor configured based on the component information, a second wear distance from the second sensor to a second measurement surface of the component, and determines a wear level of the component based at least in part on the first wear distance and the second wear distance.

The invention provides an intelligent crawler-type combine harvester walking device, and belongs to the field of harvesters, the intelligent crawler-type combine harvester walking device comprises a frame, a harvester and an engine are both fixedly installed on the upper portion of the frame, the frame is provided with a transmission gear box, the engine is in transmission connection with the transmission gear box, and the transmission gear box is connected with the harvester. The walking assembly comprises a track shoe, a driving roller, a follow-up roller, a transverse telescopic frame, a longitudinal telescopic frame, a wheel shaft, wheels and a transverse pushing gear. In the whole switching and operation process, the walking device is stably supported through the wheels, it is always ensured that the track shoe does not make direct contact with the hardened road surface, structural damage such as scratches and indentations caused by a metal track chain to the road surface is reduced fundamentally, the abrasion rate of the metal track and the rubber track can be remarkably reduced, the service life of the tracks is effectively prolonged, and the service life of the track is prolonged. And meanwhile, the accessory replacement and maintenance cost of equipment operation and maintenance is reduced.

The invention discloses a crawler wheel design suitable for a concrete vibrating robot. The crawler wheel design comprises a crawler, the driving wheel is arranged at the top of the whole crawler wheel system; the auxiliary wheel with the spring can be allowed to move inwards by a small distance under the influence of the tension of the belt; and the four bearing wheels are distributed at equal intervals. The auxiliary wheels with the springs and the layout conforming to golden section are combined, the problem that a common crawler belt system used on the concrete vibrating robot walks on undried concrete, and the crawler belt cannot move due to the fact that broken cobblestones clamp the crawler belt is solved, and the trafficability of the concrete vibrating robot is improved. And meanwhile, the device is also suitable for other severe environments.

A radio-controlled vehicle (1) with a frame (2), a powertrain (4), a control system (6), a kinetic unit (3; 3I; 3II) movable on a support plan (XY), and a remote control (7); wherein, the frame (2) has: a first longitudinal member (13; 13I) and a second longitudinal member (13; 13II), and one or more crossmembers (14; 14'; 14''); wherein, the vehicle (1) has an adjustment system (16) having a drive unit (17), which is fixed to a respective crossmember (14), a rod (32; 32I) and a sliding member (21; 21I), which is fixed to a respective kinetic unit (3; 3I; 3II); the rod (32; 32I) being fixed at a first end to the drive unit (17) and at a second end to the sliding member (21; 21I) ; wherein, the rod (32; 32I) is configured to transmit to the sliding member (21; 21I) the motion generated by the drive unit (17).

The invention relates to the technical field of yardage roll carrying devices, and discloses an AGV (automatic guided vehicle) for carrying yardage rolls, which comprises a carriage, hydraulic rods are mounted at the upper ends of the two sides of the carriage, clamping sleeves are arranged at the lower ends of the hydraulic rods, crawler wheels are mounted in the clamping sleeves, and limiting columns are fixedly connected to the middle of the upper end of the carriage. The limiting column is sleeved with a movable sleeve, a motor is installed on one side of the movable sleeve, an auxiliary platform is fixedly connected to the upper portion of the movable sleeve, and a hinge is fixedly connected to one side of the upper portion of the auxiliary platform. According to the AGV for carrying the yardage rolls, by designing a specific running track, convenience is improved when the carriage runs, meanwhile, motors move through gear meshing, an auxiliary platform can be driven to rotate around the upper portion of the carriage, and when the feeding direction of the to-be-carried yardage rolls is opposite to the discharging direction of the to-be-carried yardage rolls, the auxiliary platform can be driven to rotate by starting the motors; therefore, the placing direction of the cloth roll to be carried can be adjusted.

The present application relates to a crawler track (1) for an agricultural machine (2), comprising a front main wheel (3), a rear main wheel (4), a front main frame (5) associated with the front main wheel (3), a rear main frame (6) associated with the rear main wheel (4), at least two support wheels (9, 10), a running belt (11) spanning the main wheels (3, 4) and a pivot point (12) by means of which the crawler track (1) can be pivotably connected to a body (42) of the machine (2) by forming a machine axle (13), wherein the two main frames (5, 6) are pivotably coupled to each other about a common pivot axis (14), wherein the support wheels (9, 10) are arranged on a common support frame (15), wherein the support frame (15) is pivotably connected to the front main frame (5) by means of a support wheel arm (17).In order to provide a crawler track for an agricultural machine which is simpler in design than the prior art, a coupling element (18) is proposed according to the invention which is coupled at a swing end (19) of the coupling element (18) to the support wheel swing arm (17) and at a frame end (20) of the coupling element (18) to the rear main frame (6) and thereby couples the support wheel swing arm (17) and the rear main frame (6) together.

The present disclosure is directed toward a track link assembly comprising a track link body with at least one window opening for receiving a nut. A track shoe is attached to the track link body by means of at least one screw. The nut includes an internally threaded section for receiving the screw. A sensor arrangement comprises a sensor element attached to the track link body and electronic elements for operating the sensor arrangement. In order to provide an improved track link assembly with a sensor arrangement which is less vulnerable to damage and failure while at the same time not raising the production costs for the improved track link assembly, the nut has an internal receiving space in which the electronic elements for operating the sensor arrangement are arranged.

The invention relates to the technical field of ditcher leveling, and discloses a mountain ditcher vehicle body automatic leveling system based on feedback control, which comprises a vehicle body, a vehicle body leveling assembly is hinged to the inner wall and the outer wall of the vehicle body, and the vehicle body leveling assembly comprises a lifting adjusting assembly and an auxiliary supporting assembly which are hinged to the inner wall and the outer wall of the vehicle body; the lifting adjusting assembly comprises a chassis fixedly installed on the inner side of the vehicle body, a plurality of lifting oil cylinders are hinged between the chassis and the vehicle body, the extending ends of the lifting oil cylinders are fixedly connected with supporting rods, the bottom ends of the supporting rods are fixedly connected with an installation disc, and the bottom end of the installation disc is fixedly connected with a positioning frame. The ditcher has the advantages that the ditcher is simple in structure and convenient to use, the ditcher can be leveled to a larger extent by the aid of a combined form of applicable vehicle body leveling and the auxiliary support, safety is achieved, the ditcher is applicable to working environments in mountainous areas, the ditcher can be automatically leveled in areas with large undulation in the mountainous areas, and working quality is guaranteed.

The invention discloses a multifunctional bulk material cleaning and conveying machine which comprises a vehicle body, a cab, a power system, a walking system, a feeding and conveying system, a working arm and a sweeping system. The power system provides power for the whole machine, and the walking system is of a crawler-type walking structure and arranged on the two sides of the bottom of the vehicle body. The feeding conveying system comprises a feeding mechanism, a first-stage conveying belt and a second-stage conveying belt. A hydraulic connecting rod mechanism is arranged on the feeding mechanism, the feeding mechanism moves up and down through the hydraulic connecting rod mechanism so as to adjust the contact height with the ground, the feeding mechanism corresponds to the feeding end of the first-stage conveying belt, and the working arm is used for supplementing materials to the feeding mechanism and performing multi-scene operation; and the sweeping system is used for sweeping residual materials on the site after material transfer. According to the invention, the functions of feeding, conveying, transferring, sweeping and material supplementing are integrated, the device can be adapted to the scene of multi-thickness bulk material layers and multi-point unloading, the integrated efficient operation is realized, and the equipment and labor cost is reduced.

The utility model discloses a crawler chassis for weeding robot belongs to the technical field of robot, this crawler chassis includes mobile crawler, connecting beam, installation roof, lifting assembly and mobile sub -assembly, through setting up in lifting assembly's electric telescopic handle elongation and can make connecting cross board move down, and can lift two sides mobile crawler and leave the ground, and can adjust the interval between two sides mobile crawler more conveniently, through setting up in mobile sub -assembly's mobile wheel can make when adjusting the interval between two sides mobile crawler and ground contact, can follow mobile crawler and move while keeping the supporting force, reduce the friction with ground, through setting up in the drive motor rotation of adjusting component's rotation drive two -way screw rod, and can make two sides connection vertical board drive connecting beam and mobile crawler move simultaneously and move towards each other or opposite, realize the adjustment of mobile crawler interval.

The utility model relates to the technical field of roadway construction, specifically relates to a kind of underground roadway construction operation vehicle, including frame and track walking assembly, the middle part of frame is equipped with operating platform, the both ends of frame are equipped with first hollow rotating platform, and first hollow rotating platform is provided with stand, one side of stand is equipped with second hollow rotating platform, and second hollow rotating platform is equipped with clamping mechanism by telescopic arm;The utility model is compact in overall structure, integrates movement, clamping, rotation, lifting, transportation as a whole, can satisfy the working condition demand such as grab, lift, transport, support, solve the problem of single function of small equipment;Track walking assembly and telescopic, rotating operation component can be applicable to low, severely deformed roadway space, facilitate the recovery of material, short-distance transportation and other work, solve the problem that large-scale machinery cannot enter narrow space.

A hinged chain assembly (36) includes a standard link (38), a master link (40), and a pin (42) pivotably coupling the standard link (38) and the master link (40) together. The master link (40) includes a first half link (50) and a second half link (56), and a bolt hole (78, 82) extending through the first half link (50) and the second half link (56). A first bolt (96) is located within a first one (78) of the bolt holes and has a necked bolt shank (104) defining a smaller necked axial length. A second bolt (108) is located within a second one (82) of the bolt holes and includes a necked bolt shank (116) defining a larger necked axial length. The first bolt (96) and the second bolt (108) can have unequal overall axial lengths.