8results about How to "Improve transition efficiency" patented technology

This utility model provides a hydraulic system and a dump truck. The hydraulic system includes a hydraulic oil tank, a variable displacement pump, a steering valve assembly, a steering mechanism, a brake valve assembly, a parking brake, a lifting mechanism, an emergency pump, and an emergency valve assembly. The variable displacement pump and the emergency pump are connected to the hydraulic oil tank. The steering valve assembly is connected to the variable displacement pump and supplies oil to the steering mechanism. The lifting mechanism is connected to the steering valve assembly via a first oil circuit. The brake valve assembly is connected to the parking brake via a second oil circuit. The emergency valve assembly is connected to the emergency pump, and is connected to the steering valve assembly via a first emergency line and to the brake valve assembly via a second emergency line. The oil passing through the emergency pump is defined as emergency oil. The emergency oil, via the emergency valve assembly, can be used for emergency steering, emergency lifting, and releasing the parking brake. This utility model's hydraulic system can solve the problem of dump trucks being unable to work normally under fault conditions and the need for relocation and repair, improving relocation and repair capabilities.

The invention discloses a portable surveying and mapping device for geological mineral exploration, and belongs to the field of mineral surveying and mapping, the portable surveying and mapping device comprises a storage cylinder, the upper end of the storage cylinder is open, a pneumatic locking assembly is arranged on the inner side of the storage cylinder, and the pneumatic locking assembly comprises a flexible enclasping part and a mechanical triggering part; the flexible enclasping part comprises a supporting plate used for placing the machine base, the outer surface of the upper end of the supporting plate is fixedly connected with a pneumatic locking ring, the upper end of the pneumatic locking ring is fixedly connected with the inner surface of the storage barrel, and the pneumatic locking ring is in a circular ring shape and is located on the outer side of the machine base. According to the surveying and mapping device, the pneumatic locking assembly is arranged, the machine base is stored through the storage cylinder, in the carrying and moving process, the size of the surveying and mapping device can be reduced, the convenience of the surveying and mapping device in the carrying process can be improved, the machine base is buffered and protected through the pneumatic locking ring, and the protection effect on the machine base can be further improved; therefore, the probability that the surveying and mapping device is collided and damaged in the carrying and moving process is reduced.

The lifting platform comprises a base and a lifting part arranged on the base, the lifting part comprises a plurality of stand column assemblies which are evenly distributed above the base in a surrounding mode, the stand column assemblies are detachably connected with the base through first quick-release assemblies, and the first quick-release assemblies are detachably connected with the base through second quick-release assemblies. The lifting component further comprises a working platform and a plurality of lifting assemblies which are arranged on the stand column assemblies and used for lifting the working platform, and the lifting assemblies correspond to the stand column assemblies one to one. And compared with a traditional one-by-one assembly structure, the lifting platform assembly and disassembly structure has the advantages that the assembly and disassembly time of the lifting platform is greatly shortened, and the transition efficiency of the gantry crane is effectively improved.

This utility model relates to a floating tracked harvester chassis, belonging to the field of agricultural machinery technology. It includes a main chassis frame, with multiple sets of floating supports hinged to the bottom of the main chassis frame. Heavy-duty springs are fixedly installed between the main chassis frame and each set of floating supports. Multiple sets of support rollers are hinged to the bottom of each set of floating supports, and each set of support rollers is in elastic contact with the floating supports on both sides through light-duty springs. The support rollers of this utility model can float up and down according to changes in terrain, significantly improving the contact between the tracks and the ground, increasing the ground contact area, and ensuring a uniform distribution of ground pressure. This effectively prevents track slippage and sinking, significantly improving the equipment's passability. The heavy-duty and light-duty springs effectively absorb the impact and vibration caused by ground undulations, reducing impact damage and improving the smoothness of field operations. The spring-floating structure ensures good smoothness when the harvester travels on roads, allowing for higher travel speeds and strong versatility.

The invention relates to a crawler crane transition device, in particular to a crawler crane rapid transition device which comprises a large crawler crane, a lifting oil cylinder A-type connecting frame is installed on the large crawler crane in a hinged mode, a super-lifting tray is detachably installed at the bottom of the lifting oil cylinder A-type connecting frame, and a plurality of fixing frames are fixedly arranged on the super-lifting tray. A balancing weight is installed in the fixing frame in an inserted mode, a plurality of limiting plates are arranged on the inner side of the fixing frame in a sliding mode, the limiting plates are used for clamping and fixing the balancing weight, a height-adjustable supporting seat is fixedly arranged at the bottom of the superlift tray, and fixing plates are further symmetrically and fixedly arranged at the bottom of the superlift tray. A transport vehicle drives into the bottom of the superlift tray to carry the superlift tray; through cooperation of the limiting plates driven by the springs in the fixing frame and the anti-slip strips, rapid insertion and self-locking of the balancing weights can be achieved, the assembling and disassembling efficiency of the balancing weights is remarkably improved, and a foundation is laid for rapid transition.

The utility model relates to the field of portable laser cutting machines, in particular to a beam of a portable laser cutting machine and the portable laser cutting machine. Comprising a cross beam, optical shaft mounting grooves are symmetrically formed in the upper surface and the lower surface of the cross beam, openings of the optical shaft mounting grooves face outwards, a rack mounting face is arranged on the surface of the cross beam, a cross-shaped groove is inwards formed in the surface, combined with the rack mounting face, of the cross beam, and the cross-shaped groove is composed of a transverse groove and a longitudinal groove which are perpendicular to each other. Through the design of the cross section structure of the cross beam, an optical axis mounting groove and a rack fixing structure on the cross beam are optimized, and the assembly efficiency and the movement stability of a machine head are improved; the optical axis mounting groove is combined with the guide system of the V-shaped roller, so that the environment adaptability is high, and the later maintenance cost is low.

This utility model discloses an integrated set of equipment for excavation, loading, transportation, and unloading in long and deep foundation pit earthwork projects. It includes a tracked mobile bucket wheel reclaimer, a mobile telescopic conveyor, a prefabricated conveyor corridor, and a tracked mobile placing boom. After excavation, the soil from the tracked mobile bucket wheel reclaimer is fed into the inlet of the mobile telescopic conveyor. The outlet of the mobile telescopic conveyor is connected to the inlet of the prefabricated conveyor corridor, and the outlet of the prefabricated conveyor corridor is connected to the inlet hopper of the tracked mobile placing boom. The prefabricated conveyor corridor is supported by two tracked walking mechanisms near both ends. The tracked mobile placing boom is located outside the pit at the material stockpile site. This utility model eliminates the need for dump trucks for transportation, enabling efficient excavation and stockpiling of soil within deep foundation pits. Furthermore, it offers enhanced safety during transportation and stockpiling. All equipment can move via tracks, allowing for rapid relocation to the next location and improving relocation efficiency.

The invention belongs to the technical field of bridge girder erection machines, and particularly relates to a construction method of a bridge girder erection machine at a height-limited position. Comprising the following steps: S1, arranging at least two hydraulic brackets for supporting a bridge girder erection machine on a girder transporting vehicle; s2, the bridge girder erection machine is lifted and transported to the height-limited position by the girder transporting vehicle from a high position, and the bridge girder erection machine passes through the height-limited position after being lowered to a low position; s3, enabling the front supporting leg structure to be stably supported on the bridge pier after passing through the height-limited position; s4, the tail of the bridge girder erection machine is still located at the height-limited position at the stage, the bridge girder erection machine advances forwards on the girder transporting vehicle, and the front supporting leg structure and the auxiliary supporting leg structure are erected on the corresponding piers in front at the same time; s5, synchronous jacking operation is carried out on the bridge erecting machine by means of the auxiliary supporting leg structure and the rear hydraulic bracket, so that the main beam of the bridge erecting machine is restored to the normal high position; and S6, the rear supporting leg structure is operated, and the upper curved beam, the upper door beam and the lower curved beam are folded to original positions. According to the invention, the problem of transportation contour limitation of traditional equipment during transition in narrow spaces such as a tunnel is successfully solved.