18results about How to "Avoid shear force" patented technology

The invention provides an adsorption module and a motion system, and relates to the technical field of precision equipment. The adsorption module comprises an adsorption substrate, a rotating base, a rotating shaft module, a wafer bearing table and a suction cup. The rotating base is fixedly connected with the adsorption substrate, and the rotating shaft module can rotate relative to the rotating base; the rotating shaft module can move in the axial direction of the rotating shaft module relative to the rotating base; the rotating shaft module is configured to be connected with the suction cup or the rotating base in an air pressure connection mode. The wafer bearing table is configured to be capable of adsorbing the suction cup or supporting the suction cup in an air floatation mode.

The invention discloses a stop valve for fluid control and a working method of the stop valve, solves the problem that in the prior art, due to the fact that a valve rod and a valve element are not aligned, the opening and closing function is prone to failure, and has the beneficial effects that the stop valve for fluid control comprises a valve body, and the valve body forms a fluid opening and closing channel; the valve body is connected with the middle valve cover in a sealed mode, the middle valve cover is connected with the upper valve cover in a sealed mode, a driving piece is arranged at the position of the upper valve cover, the driving piece can rotate relative to the upper valve cover, the driving piece is connected with the valve rod through a thread structure, and the valve rod sequentially penetrates through the upper valve cover, the middle valve cover and the valve body and then is connected with the valve element. One section of the valve rod is in sliding connection with the upper valve deck or the middle valve deck to limit rotation of the valve rod along with the driving piece, so that the valve rod drives the valve element to move relative to the valve body in the axis direction of the valve body, and opening or closing of the opening and closing channel is achieved.

The present application relates to a pair of oil palm harvesting scissors, wherein a first driving motor is provided in a mounting circular groove at one end of a gripping rod, and is transmission-connected with a lead screw, a movable block is provided on the outer threaded sleeve of the lead screw, and a movable knife is provided on the movable block; an end mounting seat is mounted and connected to the gripping rod, and is provided with a fixed knife; in the length direction of the gripping rod, the fixed knife and the movable knife are located on the same straight line; when in use, the lead screw is controlled to rotate by the first driving motor, thereby driving the movable knife on the movable block to move toward the fixed knife, so as to trim the oil palm petiole located between the movable knife and the fixed knife; after trimming, the movable knife and the fixed knife move in the opposite direction, thereby realizing automatic shearing and accelerating the trimming efficiency; in addition, the movable knife and the fixed knife are arranged at intervals on a straight line, so that the scope of application is wider, and the blades of the movable knife and the fixed knife are in the opposite direction to the width of the oil palm petiole, and the shearing force is applied along the thickness direction of the oil palm petiole to avoid shearing along the width direction of the oil palm petiole, thereby reducing the required shearing force.

The invention provides a micropositioner and a motion system, and relates to the technical field of precision equipment. The micropositioner comprises a top plate and at least three vertical driving devices for driving a part of the top plate to move in the vertical direction of a reference plane, the at least three vertical driving devices comprise three vertical driving devices of which the axes are not coplanar; the vertical driving device comprises a first linear driving mechanism and a second linear driving mechanism connected with a first driving part of the first linear driving mechanism, and a second driving part of the second linear driving mechanism is connected with the top plate through a driving decoupling mechanism; the driving precision of the second linear driving mechanism is higher than that of the first linear driving mechanism.

The invention relates to a prefabricated concrete enclosure pier, and belongs to the technical field of distribution line appliances, the prefabricated concrete enclosure pier comprises a pier body arranged on an electric pole in a sleeving manner, and the pier body comprises two splicing units which are detachably spliced with each other and arranged outside the electric pole in a sleeving manner; each splicing unit comprises an outer sleeve, a foam layer, a reinforcing mesh and anchoring steel bars, the outer sleeve is a semicircular sleeve, the foam layer is filled in the outer sleeve, and the reinforcing mesh is fixedly arranged between the foam layer and the inner wall of the outer sleeve; one end of each anchoring steel bar is inserted into the foam layer, the other end of each anchoring steel bar extends out of the foam layer and then is fixedly connected with the inner wall of the outer sleeve in an inserted mode, and the anchoring steel bars are fixedly connected with the steel bar net. The device can be directly transported to a site for installation, the installation process is simple and rapid, the construction period is greatly shortened, and the device is convenient to disassemble and can be recycled.

The utility model discloses a column type microalgae photobioreactor which comprises a vacuum pump, a buffer tank, a reactor, a bracket, an algae liquid storage pool and a central control device, the vacuum pump is sequentially connected with the buffer tank and the reactor through pipelines, the reactor is erected on the algae liquid storage pool through a support, and the central control device is connected with and controls all the devices. The reactor provided by the utility model takes the vacuum pump as driving force, and is provided with multiple buffer containers, so that the continuous operation of the system is prevented from being influenced by the pollution of the vacuum pump while the shearing force of a flow passage component of the water pump is avoided, and the problem of pain points in the application process of the traditional column type microalgae photoreactor is effectively solved; while the advantage of high carbon sequestration efficiency of the column type reactor is reserved, the problems that the column type reactor is difficult to clean, the water pump easily damages microalgae growth and the like are solved.

The utility model discloses a kind of carbon fiber badminton racket production line opening die unit and final assembly equipment, opening die unit includes rack, fixed assembly and clamping assembly, the fixed assembly is connected with the rack, when the conveying unit of production line drives mold movement to opening die station, the fixed assembly is fixed to lower mold, the clamping assembly clamps upper mold and drives upper mold to move away from lower mold, the fixed assembly includes oppositely arranged top module, and the first electric cylinder of driving the top module, under the driving of the first electric cylinder, the top module abuts the slot between upper mold and lower mold, to fix lower mold. Through the synergistic mechanism of "lower mold structure limiting+upper mold vertical lifting", not only solve the lower mold without fixing, the mold misplacement problem caused by upper mold rotating opening, first fixed lower mold then separate upper mold Step operation, effectively avoid the risk of carbon fiber layer tearing caused by mold misplacement in traditional synchronous opening mold.

The utility model relates to an anti-loosening structure, a traction device and a tractor, the structure comprises a mounting frame welding part, a mounting frame welding part bottom plate and a swing pin welding part, and the mounting frame welding part bottom plate is fixedly mounted at the lower end of the mounting frame welding part; the swing pin welding part is fixedly connected with the installation frame welding part bottom plate through a plurality of screws, and the upper ends of the screws extend into a plurality of threaded holes in the installation frame welding part bottom plate respectively. The screws are sleeved with screw limiting spacer bushes correspondingly, and one ends of the screw limiting spacer bushes extend into the spacer bush holes correspondingly. The gap between the inner hole of the screw limiting spacer bush and the outer circle of the screw is larger than the gap between the outer circle of the screw limiting spacer bush and the inner hole of the spacer bush hole. The traction device is simple in structure and reasonable in design, stable connection of the traction device in a working environment is guaranteed, connection looseness of the traction device caused by vibration, impact or other external force and the like is prevented, the situation that the working efficiency is reduced due to looseness and falling-off of the traction device in the working process is avoided, and personal injury caused by the looseness and falling-off is also avoided.

This utility model discloses an inspection fixture for identifying the position and orientation of mounting feet on a battery pack casing, comprising a main base plate and four bottom positioning components. The four bottom positioning components are located at the four corners of the upper surface of the main base plate, each including two first positioning plates, one second positioning plate, and one positioning latching block. The two first positioning plates are spaced parallel to each other along the length of the main base plate, and the second positioning plate is perpendicularly positioned inside the first positioning plate near the edge of the main base plate. The positioning latching block is installed in different positions within the bottom positioning components along different length directions. During inspection, the battery pack casing is placed flat on the main base plate, the second positioning plate latches onto the casing, and the first positioning plates and positioning latching blocks latch onto the mounting feet, enabling inspection of the X, Y, and Z axis directions and positions of the mounting feet. This utility model can replace manual measurement, simplify operation, improve inspection efficiency, avoid visual misjudgment, and thus prevent batches of defective products from flowing into the next process.

The invention relates to a scanning electron microscope sample section and a preparation method and application thereof. The preparation method comprises the following steps: S1, cutting a sample into a rectangular sample; s2, clamping the rectangular sample into a clamp; s3, placing the clamped rectangular sample in a required environment, and applying pulling force to the two ends of the rectangular sample through a clamp; and S4, cutting the rectangular sample to complete the preparation of the section of the sample. Compared with the prior art, the method has the advantages that the shearing force during preparation of the section sample can be overcome under the condition that an ultrathin slicing machine is not used, the cost is reduced, and meanwhile, the microstructure analysis problem of the section sample is solved.

The invention belongs to the technical field of production and processing of high thermal conductivity, insulation and heat dissipation glue, and discloses a kneading machine for production and processing of high thermal conductivity, insulation and heat dissipation glue, the kneading machine comprises a transmission mechanism, the transmission mechanism comprises a top cover, the top cover is fixedly connected with a driving belt pulley, and the driving belt pulley is slidably connected with a first belt; the end, away from the driving belt wheel, of the first belt is slidably connected with a transmission belt wheel. Through cooperation of structures such as a first gear and a first rack, two stirring rods can be separated from each other conveniently, a driving belt wheel can be driven to rotate in the opening process of a top cover, the driving belt wheel rotates to drive two coaxial transmission belt wheels to rotate through a first belt, and the stirring rods are driven to rotate through a second belt. Wherein a transmission belt wheel rotates to drive a driven belt wheel and a first gear to rotate through a second belt, and the first gear rotates to drive a second gear and the first gear to rotate reversely, so that two first racks drive two stirring rods to move away from each other.

The utility model relates to a microalgae culture device for ecological restoration, which comprises a culture tank, an annular first cover plate mounted at the top of the culture tank through a flange, an annular second cover plate detachably mounted on the inner wall of the first cover plate, a third cover plate detachably mounted on the inner wall of the second cover plate, and a liquid distribution plate inserted into the upper part of the inner wall of the culture tank, a liquid inlet in the liquid distribution plate penetrates out of the side wall of the culture tank, a microalgae inlet located below the liquid distribution plate is formed in the side wall of the culture tank, a temperature equalizing cover is arranged on the inner wall of one side of the culture tank, a heating resistance wire is arranged in the temperature equalizing cover, air inlet pipes are arranged on the two sides of the top of the second cover plate in an up-down sealing and sliding mode, and the bottoms of the air inlet pipes are connected with aeration coil pipes; a lifting mechanism for driving the air inlet pipe to lift is arranged on the outer side of the culture tank, and illuminating lamps are vertically and hermetically arranged on two sides of the top of the third cover plate in a sliding manner. The illumination lamp and the aeration coil pipe are convenient to disassemble, assemble and clean, the height of the aeration pipe is adjustable, and the microalgae culture effect is good.

The invention discloses a prestress cambered surface tensioning device for repairing a shield segment. Relates to the technical field of civil engineering, and comprises two fixed hollow anchor bearing plates, the two fixed hollow anchor bearing plates are symmetrically arranged on the two sides of a CFRP rib, the ends, away from each other, of the fixed hollow anchor bearing plates are each provided with an annular cambered surface single-hole anchorage device, and the ends, away from each other, of the fixed hollow anchor bearing plates are each provided with an annular cambered surface single-hole anchorage device; the end, away from the fixed type hollow anchor bearing plate, of each annular cambered surface single-hole anchorage device is provided with a jacking and pressing bearing plate. The front clamping type jack is detachably arranged at the end, away from the annular cambered-surface single-hole anchorage device, of the jacking and pressing base plate, the fixed type hollow anchor base plate is arranged and matched with the front clamping type jack, and the influence of radian change of an arc-shaped structure on the shear performance of the CFRP rib in the tensioning process can be eliminated, so that the tensile strength of the CFRP rib is improved, and the tensile strength of the CFRP rib is improved. And the performance of the material is fully exerted.

The utility model provides a side-by-side integrated escalator, and belongs to the technical field of escalators. The side-by-side escalator solves the problems that an existing side-by-side escalator is prone to dislocation and can be eroded by rainwater. The side-by-side integrated escalator comprises a truss, a connecting piece, a supporting frame, a left handrail piece, a right handrail piece and a cover plate. According to the side-by-side escalator, the two trusses are connected through the connecting piece, so that when the side-by-side escalator is assembled or used, the two trusses cannot be staggered, and particularly, the end parts of the two trusses cannot be convex and concave, namely, the two escalators are always in a flush state; and secondly, due to the arrangement of the connecting piece, the situation that the two trusses are staggered can be avoided, the cover plate can be prevented from being subjected to shearing force of the two trusses, and therefore the cover plate is prevented from being deformed due to stress.

The invention discloses an internal positioning tool structure of a fuel cell, which comprises a tool bottom plate provided with an opening and fixed with a rear end plate of the fuel cell through a bolt; the positioning pins are vertically arranged on the tool bottom plate, and every two positioning pins are symmetrically arranged; the positioning pin comprises two positioning rods, two combination plates and a bayonet lock; the diagonal planes of the two composition plates are spliced in an axial symmetry mode, the clamping pin is clamped at the joint of the two composition plates, one ends of the two composition plates are fixed, and the other ends of the two composition plates are fixedly arranged in the limiting groove in the tool bottom plate. The two positioning rods are arranged on the two sides of the two combination plates respectively, limiting is conducted through the positioning holes in the tool bottom plate, and the positioning rods make contact with the inner wall of a medium public channel of the fuel cell to position the fuel cell. The two groups of positioning pins form a spatial triangular structure, so that the rigidity and the stability of the internal positioning tool are remarkably improved, and the precision of the fuel cell electric stacking piece is further improved.

The utility model discloses an intelligent toilet lid touch control button response test mechanism, which comprises a rack main body, a first cylinder seat, a first telescopic cylinder and a lifting mechanism, and is characterized in that the first cylinder seat is fixedly arranged on the rack main body, a cylinder body of the first telescopic cylinder is fixedly arranged on the first cylinder seat, and the rack main body is provided with a through hole; according to the testing mechanism, the lifting mechanism is additionally arranged, reciprocating motion operation on the electric push rod is avoided, shearing force on an execution rod of the electric push rod is avoided, the service life of the testing mechanism is prolonged, and frequent maintenance, overhaul and replacement of the electric push rod are avoided. Meanwhile, due to the fact that the service life of the whole structure of the testing mechanism is long, non-stop testing can be achieved in the testing process, and then testing efficiency is improved.

This utility model discloses a main support arm for a rotating rocking chair, including a base with a central column on the base and a drive mechanism for driving the central column to rotate on the base. The utility model provides a rubber limiting component on the inner wall of the upper end of the support cylinder. A mounting plate at the lower end of the central column is inserted into its mounting groove and fixed to the support plate. The drive mechanism is also fixed to the mounting plate. This ensures that the drive mechanism moves synchronously when the central column shakes, avoiding relative displacement and additional torsional and shear forces, effectively protecting the drive mechanism. Simultaneously, a detachable fixing ring assembly is provided at the upper end of the support cylinder to fix the rubber limiting component, and a lifting mechanism is provided at the lower end for easy replacement of the rubber limiting component.

The utility model discloses an accurate temperature control cell culture mechanism which is characterized by comprising a heating cavity, a temperature control assembly and a heating cover, the heating cavity comprises a cavity body, and a temperature control assembly mounting position for mounting a temperature control assembly is arranged on the cavity body; the heating cover is positioned at the top of the heating cavity; the heating cover comprises a cover plate and a cover plate heating sheet; a temperature sensor and cover plate heat preservation foam are further included. The temperature control assembly comprises a heating sheet, a temperature sensor and a heat dissipation assembly; the temperature control assemblies are symmetrically installed on the heating cavity body. The heating cavity further comprises an infrared temperature detector and cavity heat preservation foam. And the infrared temperature detector is electrically connected with the temperature control assembly and the heating cover. The utility model provides the cell culture mechanism capable of accurately controlling the temperature, which can monitor the internal environment in real time, keep the whole temperature consistent, eliminate condensed water at the top of the culture device and prevent the condensed water from dripping to generate a shearing force effect on cells.