117results about How to "Achieve the limit" patented technology

The invention discloses a hydraulic steering system for engineering machinery, and belongs to the technical field of hydraulic systems for the engineering machinery. The system comprises a steering pump and steering cylinders controlling the steering of the engineering machinery through a steering gear, wherein a priority valve is communicated with an oil way between the steering gear and the steering pump; a first hydraulic control reversing valve is communicated in series in an oil way between a third oil port of the steering gear and a second oil port of the priority valve; a shuttle valve, a second hydraulic control reversing valve and an engine-driven reversing valve are communicated in series in an oil way between the hydraulic control port of the first hydraulic control reversing valve and the first oil port of the steering pump; limiting blocks are respectively arranged on both sides, corresponding to the engine-driven reversing valve, of a vehicle frame of the engineering machinery. A hydraulic circuit control manner disclosed by the invention is simple and reliable. During the steering at a limit position of the cylinders, the system does not have a spill loss and hydraulic impact on the vehicle frame by the steering cylinders at the limit position is eliminated, so that energy is saved, rocking does not occur when the steering is finished, and the comfort of the whole vehicle is increased.

The invention discloses a hydraulic steering system of an engineering machine and belongs to the technical field of hydraulic systems of engineering machines. The hydraulic steering system comprises a control part and a driving part, the control part comprises a steering gear, and the driving part comprises a steering oil cylinder and a steering pump. An amplification flow valve is serially communicated between the steering pump and the steering oil cylinder, a main valve spool controlling oil flow is arranged in the amplification flow valve, two liquid-control ports of the main valve spool are communicated with two oil outlets of the steering gear through liquid-control reversing valves, liquid-control ports of the liquid-control reversing valves are communicated with the steering pump through a maneuvering reversing valve and a pressure reducing valve. Limiters are arranged on a frame of the engineering machine and correspond to two sides of the maneuvering reversing valve. The hydraulic steering system is simple and reliable in hydraulic loop control manner, no overflow loss of the hydraulic steering system is caused when the engineering machine steers at the limit position of the oil cylinder, hydraulic impact to the frame from the limit position of the oil cylinder during steering is eliminated, energy is saved while shaking after steering is avoided, and comfortableness of the integral engineering machine is improved.

The invention discloses a selling rack for cotton yarn selling. The selling rack for cotton yarn selling comprises a selling rack body and multiple supporting plates, wherein multiple fixed blocks arefixedly connected to the upper surfaces of the supporting plates, the adjacent sides of every two adjacent fixed blocks in the fixed blocks are each fixedly connected with a stretchable rod, the opposite sides of every two adjacent stretchable rods in the stretchable rods are each fixedly connected with a baffle, the rod walls of the stretchable rods are sleeved with springs, and the two ends ofeach spring are fixedly connected with the side wall of the corresponding baffle and the side wall of the corresponding fixed block respectively. By means of the selling rack for cotton yarn selling,the condition that due to careless touching of customers, cotton yarn stacked on the selling rack is collapsed can be avoided, workers do not need to newly put the cotton yarn, time and labor are saved, the labor intensity of the workers is reduced, the moving speed of the selling rack is increased, the stability of the selling rack is guaranteed, dust adhesion of the cotton yarn on the selling rack is avoided, the cotton yarn is protected and cannot be contaminated to be blackened, the quality of the cotton yarn is improved, and the selling efficiency of the cotton yarn is guaranteed.

The invention discloses an angle adjustable cradling piece connection device, which comprises a clamp (1), a locking seat (2) and a locking mechanism (3), wherein, the locking mechanism (3) comprises an inner-toothed arc (14), a spring (17), a positioning rod (15), an outer-toothed arc (16) which is fixed at the lower end of the positioning rod (15), and a derrick boom (13) which is arranged on the locking seat (2); a first key slot (19) and a second key slot (20) which are perpendicular to each other are formed longitudinally on the derrick boom (13); blind holes are formed at the bottom end of the derrick boom (13); the spring (17), the positioning rod (15) and the outer-toothed arc (16) are arranged in the blind holes; the inner-toothed arc (14) which is meshed with the outer-toothed arc (16) penetrates the second key slot (20) in a sliding manner; two positioning operating handles (18) which are extended from the first key slot (19) respectively are arranged on the positioning rod (15); and the bottom part of the clamp which are fixed with the two ends of the inner-toothed arc (14) is hinged with the top end of the derrick boom (13).

The invention relates to the technical field of cleaning, and discloses an automatic-cleaning-type tea-picking storing device. The automatic-cleaning-type tea-picking storing device comprises a cleaning tank with an upper opening, a cover plate used for closing the opening is detachably connected to the cleaning tank, and a plurality of pressure-relief openings are formed in the cover plate; the two sides in the cleaning tank are provided with sieve plates correspondingly, a plurality of sieve holes are formed in the sieve plates, and the sieve plates and the cleaning tank constitute a storagecavity; the lower parts of the sieve plates are slidably connected with anti-blocking plates, a plurality of anti-blocking shafts are arranged on the anti-blocking plates, and reciprocating pushing mechanisms are arranged below the anti-blocking plates; an equipment box is arranged below the cleaning tank, a hollow rotary shaft rotationally connected with the equipment box is arranged in the equipment box, a driving piece driving a rotary shaft is fixed into the equipment box, and the upper part of the rotary shaft communicates with a plurality of branch pipes which communicate with the cleaning tank; and gas tanks fixed to the equipment box is arranged on the outer side of the lower part of the rotary shaft in a sleeving mode, and the gas tank communicates with a gas source. The automatic-cleaning-type tea-picking storing device is simple in structure, a turbulent flow is formed through rotation of the rotary shaft to conduct impurity separation on tea leaves, and the purpose of cleaning the tea leaves is achieved.

The invention relates to the technical field of photolysis catalytic equipment and discloses photolysis catalytic purification equipment convenient to maintain and simple to operate. The photolysis catalytic purification equipment comprises a purifier and is characterized in that four cushion blocks are fixedly mounted at the bottom of the purifier, a limit frame is fixedly mounted on the right side of the purifier, a clamp plate is fixedly mounted inside the limit frame, and the inner top wall and the inner bottom wall of the limit frame are provided with clamp grooves. The photolysis catalytic purification equipment has the advantages that clamp springs can be clamped through grooves formed in the clamp plate, plate clamping is achieved by the clamp grooves formed in the limit frame andclamp heads which are mounted onto the clamp springs and extend into the clamp grooves, and extrusion rods mounted into through holes can push the clamp heads out of the clamp grooves through extrusion blocks when being pressed so as to take the clamp plate and UV lamp bodies out of the purifier. By the arrangement, the photolysis catalytic equipment has the advantages that demounting is facilitated, and the interior of the purifier can be maintained conveniently.

The invention discloses an automatic supporting plate device for fur, and belongs to the field of garment material processing equipment. The automatic supporting plate device comprises a bottom box, arotating shaft, a rotary disc, a driving assembly, a feeding assembly, a troweling assembly, an air injection assembly, a discharging assembly and four supporting plate assemblies, wherein the rotating shaft can be rotatably mounted on the bottom box, and the bottom end of the rotating shaft extends into the bottom box; the rotary disc is fixedly connected with the top of the rotating shaft, thedriving assembly is arranged in the bottom box, the four supporting plate assemblies are arranged at the top of the rotary disc around the circle center of the rotary disc at equal intervals, the feeding assembly, the troweling assembly, the air injection assembly and the discharging assembly are sequentially arranged beside the rotary disc, and the feeding assembly and the discharging assembly are the same in structure. The problems that in the fur processing process, plate supporting needs to be conducted, pure manual operation is adopted in the plate supporting procedure, the processing efficiency is low, and the processing cost is increased are solved.

The invention discloses a lithium battery capable of preventing combined resonance, and relates to the technical field of lithium batteries, the lithium battery comprises a battery box and an early warning assembly, a module seat is mounted in the battery box, a limiting seat is mounted on the surface of the module seat, an anti-resonance assembly is mounted in the limiting seat, and a battery main body is arranged in the anti-resonance assembly; the anti-resonance assembly comprises a frame, a rotating shaft, a stabilizing base, a connecting piece, an elastic protection piece, a heat dissipation patch, a groove and an elastic clamping block. According to the lithium battery module, a plurality of components are matched with one another, so that a single lithium battery can be firmly fixed on the surface of the module seat, the stability is improved, the danger caused by resonance generated by vibration is avoided, the height is freely adjusted through the connecting component, the mounting is convenient, and the mounting efficiency is improved. And after installation, the lithium battery in the middle can be further locked and reinforced, the safety of the equipment during working is improved through the protection assembly, and heat dissipation of the equipment can be assisted.

The invention belongs to the technical field of oil residue separation equipment, and provides a pepper oil residue separation device which comprises an outer cylinder and an inner cylinder arranged in the outer cylinder, an oil cavity is formed between the outer cylinder and the inner cylinder, and the upper portions of the outer cylinder and the inner cylinder are open; a plurality of oil holes communicated with the oil cavity are formed in the inner cylinder, and a plurality of filter plates are connected in the inner cylinder along vertical threads of the inner cylinder; a cover plate used for sealing the openings in the outer cylinder and the inner cylinder is fixed to the outer cylinder, a limiting shaft used for limiting the filter plate is fixed to the cover plate, and a driving piece used for driving the inner cylinder to rotate is fixed to the outer cylinder. The zanthoxylum oil and residues of the zanthoxylum oil are separated, and waste of the zanthoxylum oil is reduced.

The invention discloses a feeding mechanism of a bag making machine. The feeding mechanism comprises a rack and a feeding long shaft; the feeding long shaft is connected with the rack in a rotary manner; a packing film is wound on a roll; the roll sleeves the feeding long shaft; the feeding mechanism further comprises an automatic alarming device and a limiting device; the limiting device is used for limiting the position of the packing film; the automatic alarming device comprises a cross rod, a long rod, a baffle block, a proximity switch, a processor and an alarm; the cross rod is in front of and above the feeding long shaft and is transversely arranged on the rack; the baffle block sleeves the cross rod and is connected with the cross rod in a rotary manner; the higher end of the long rod is connected with the baffle block; the lower end of the long rod is in contact with the packing film on the uppermost layer; the proximity switch is close to the baffle block and is in output connection with the processor; and the processor is in output connection with the alarm. The feeding mechanism has the advantages that the packing film is prevented from off tracking; and when the unwinding of the packing film is finished or is about to be finished, an alarm can be given timely and automatically.

The invention relates to the technical field of petroleum pipelines, and discloses a petroleum pipeline for deep wells. The petroleum pipeline for the deep wells comprises a first connecting pipe, a first flange is fixedly mounted on the right side of the first connecting pipe, the right side of the first flange is provided with a through hole extending into the connecting pipe, a groove formed inside the first flange is fixedly mounted on the inner wall of the through hole, a telescopic spring is fixedly mounted inside the groove, and an extending pipe extending to the exterior of the first flange is movably installed inside the through hole. By means of the petroleum pipeline for the deep wells, a sealing ring is installed on the inner wall of the through hole, the sealing ring is provided with a sealing gasket, a second flange is provided with a contact ring corresponding to the sealing gasket, and the aim of being good in sealing effect of the petroleum pipeline is achieved; and athreaded rod is installed on a fixing block, a pressing block is in threaded connection to the threaded rod, the contact ring can be in tight fit with the sealing gasket, and the aim of preventing petroleum leakage is achieved.

The invention relates to a mounting and supporting structure for an indoor chilled water pipe. The mounting and supporting structure comprises a horizontal base and a supporting device, the supporting device is fixedly mounted on the upper end face of the horizontal base, and the horizontal base comprises a fixed plate, inclined plates, an electromagnetic plate, a rolling ball, a supporting plate, first balancing weights and a sliding rail. The supporting device comprises a rectangular stand column, electric telescopic rods, sliding blocks, electric push rods, C-shaped plates, threaded long rods, arc-shaped clamping plates and rectangular long plates. It is guaranteed that the supporting device is parallel to the horizontal plane through the horizontal base, and therefore the mounting quality of the chilled water pipe is guaranteed; and the chilled water pipe is locally supported through the supporting device, and thus the chilled water pipe does not need to be supported by a plurality of workers for a long time, so that the safety of the workers is ensured, manpower consumed for mounting the chilled water pipe is reduced, and the mounting cost of the chilled water pipe is reduced.

The invention relates to the technical field of bridge expansion joints and discloses a centralized drainage comb type bridge expansion device comprising a first face plate. A second face plate is hinged to the right side of the first face plate. The tops of the first face plate and the second face plate are both provided with locating grooves. The inner bottom walls of the two locating grooves are both provided with threaded grooves. Anti-skidding mats are movably installed in the locating grooves. Fixing holes are formed in the anti-skidding mats. According to the centralized drainage comb type bridge expansion device, by forming limiting grooves in stabilizing blocks and installing limiting bars in the limiting grooves, the purpose of limiting a water guiding frame is achieved; by installing the water guiding frame on the limiting bars and installing water drainage pipes on the water guiding frame, when rainwater is leaked from the seam between the first face plate and the second face plate, the rainwater can fall into the water guiding frame, the water guiding frame can guide the water into the water drainage pipes on the front and back two sides, and then the purpose for convenient centralized drainage is achieved.