12results about How to "Gap stability" patented technology

The utility model discloses a factory silkworm breeding shelf, including net board, still include mechanical hand grab and support containment structure, and the shelf is grabbed through the mechanical hand grab, and the support containment structure is used for supporting the shelf, the utility model discloses enough bottom support is provided for the shelf, makes it can be stably placed on the silkworm frame or cover on the last instar shelf, and can produce fixed gap between the last instar shelf, basically is not affected by the deformation of the shelf. In addition, the support containment structure has the effect of protecting the silkworm under the ring, prevents a small part of silkworms from climbing out of the last instar shelf, so that all silkworms can be oriented to climb to the top surface of the shelf and eat in time.

This utility model belongs to the technical field of telescopic drive shafts, specifically relating to a high-strength telescopic drive shaft. The high-strength telescopic drive shaft includes a first shaft body, with an outer cylinder fixedly connected to the left side of the first shaft body. A connecting groove is formed on the inner wall of the outer cylinder, and an inner cylinder is disposed inside the outer cylinder. A rectangular hole is formed inside the inner cylinder. Through the cooperation of the inner cylinder, rectangular hole, connecting column, trapezoidal block, threaded column, sliding groove, sliding column, trapezoidal groove, first retaining ring, nut, and second retaining ring, when a gap arises between the connecting column and the connecting groove due to wear, rotating the nut increases the distance between the connecting column and the sliding column, compensating for the wear-induced gap. This allows the connecting block and the connecting groove to regain a stable fit, enabling the drive shaft to continue transmitting power stably and effectively reducing the maintenance cost of the drive shaft.

The utility model discloses a positioning device and sewing equipment. The utility model discloses a positioning device, including support cylinder, guide piece, first positioning piece and first drive part. The guide piece is fixedly connected in the outer peripheral wall of support cylinder, and the guide piece is opened with the guide groove in. The first positioning piece includes the positioning portion and the sliding portion who are connected with each other. The first drive part is connected the first positioning piece, and the first drive part is used for driving the first positioning piece movement to make the first positioning piece rotate around the axis of support cylinder. Through connecting the guide piece in the inner peripheral wall of support cylinder, and opening the guide groove that extends along the circumference of support cylinder in it, and letting the sliding portion slide in the guide groove, make the first positioning piece rotate around the outer peripheral wall of support cylinder in the positioning process, improve the fitting degree of positioning device and support cylinder, guarantee the clearance between the first positioning piece and support cylinder to keep stable, avoid the situation that the first positioning piece and support cylinder will be stuck with the hat brim, improve the positioning effect to the hat brim.

The utility model relates to mechanical design technical field discloses a high accuracy balance air conditioner engine crankshaft, including front end spindle neck, the front end spindle neck rear side fixedly connected with first connecting sleeve, first intermediate spindle neck is fixedly connected with first connecting sleeve rear portion, first intermediate spindle neck outside fixedly connected with front balance ring, first intermediate spindle neck left and right sides all fixedly connected with primary crank arm, primary crank arm inside fixedly connected with primary connecting rod axle neck, primary crank arm bottom fixedly connected with primary crank balance weight, the crank balance weight bottom fixedly connected with balance counterweight sliding block, first intermediate spindle neck rear portion fixedly connected with secondary crank assembly, the utility model discloses, this crankshaft passes through multiple spindle neck dispersion load, promotes the alternating complex load capacity, axle neck cover and lubrication structure stable gap, balance weight and adjusting screw optimization dynamic balance, reduce the failure risk greatly.

The utility model belongs to fan technical field, concretely relates to a fan impeller front disc and double -deck stable air inlet device of air inlet, including air inlet and impeller, the front disc of impeller is encased in the outside of air inlet inner end, is equipped with gap between both, is equipped with the reducing section in the inner end place close to air inlet, the side wall section of reducing section is circular arc, its characterized in that the outer side of air inlet inner end encases the cylindrical fairing, and the fairing completely covers reducing section. The utility model has the advantages of reasonable structure, low in cost, the gap size stability between impeller front disc and air inlet. Use the utility model, and the gap between impeller front disc and air inlet is stable and is not affected by the axial installation accuracy of impeller front disc and air inlet, and the assembly difficulty of both is greatly reduced.

The utility model discloses a waste water treatment filter press, which relates to the technical field of waste water treatment and comprises a rack, symmetrically arranged main beams are arranged on two sides of the rack, a thrust plate is arranged on one side of the rack, a plurality of groups of filter plates and pressing plates are arranged between the main beams, the plurality of groups of filter plates are positioned between the thrust plate and the pressing plates, and a filter chamber is formed between every two adjacent filter plates. One side of the pressing plate is connected with the output end of an oil cylinder arranged on one side of the machine frame, a feeding port is formed in one side of the thrust plate, through holes and filtering protrusions are arranged on the filter plate and located in the filter chamber, and a plurality of flow guide grooves distributed along the through holes in an annular array mode are formed in the surface of the filter plate. The device has the beneficial effects that the slurry filling distribution in the filter chamber is more uniform, and the filter bulges are matched, so that the filter plate deformation is small, the filter plate gap is stable, the capacity of the filter chamber is increased, the weight of a single filter cake is increased, and the filter-pressing working efficiency is improved.

The utility model discloses a shelf for silkworm breeding, which comprises a net plate and a support enclosure frame arranged at the bottom of the shelf, and the support enclosure frame is used for supporting the shelf and enclosing silkworms in the shelf. The supporting enclosure frame comprises a supporting flange used for supporting the shelf, and a supporting enclosure frame is defined by the supporting flange. The shelf is provided with the supporting enclosure frame, the supporting enclosure frame is arranged at the bottom of the shelf and surrounds the shelf by a circle, enough bottom support is provided for the shelf, the shelf can be stably placed on a silkworm basket or covers the shelf of the last age, a fixed gap can be generated between the shelf and the shelf of the last age, and the shelf is basically not influenced by deformation of the shelf. In addition, the supporting enclosure frame has the effect of enclosing and protecting silkworms below the supporting enclosure frame, a small part of silkworm eggs are prevented from climbing out of the shelf of the last age, and all the silkworms can directionally climb to the top of the shelf and eat in time.

The utility model discloses a kind of compressor gear box. Including base, upper box, lower box, bearing module, flow guide body connecting flange, positioning mechanism;The lower box is provided on the base, the lower box is spliced with upper box to form gear box, and bearing module is provided at the splicing of upper box and lower box;Its characterized in that: the bearing module outer periphery is equipped with corresponding positioning mechanism, and the positioning mechanism is connected with corresponding flow guide body connecting flange;The positioning mechanism is concentric with corresponding bearing module, and the flow guide body connecting flange is concentric with corresponding positioning mechanism, and the flow guide body connecting flange includes connecting positioning plate, and connecting positioning plate center is provided with positioning hole, and the inner diameter of positioning hole is same with the inner diameter of corresponding bearing module, and the positioning mechanism is provided with inner mounting hole, and connecting positioning plate is provided with outer mounting hole, and when positioning hole is aligned with bearing module center, inner mounting hole is aligned with outer mounting hole, and the flow guide body connecting flange is fixed on corresponding positioning mechanism.The utility model guarantees the concentricity of flow guide body and impeller.

The invention relates to the technical field of air bearings, and discloses an air bearing device capable of preventing axial movement, the air bearing device comprises an air supply system, a bearing base body and a rotating roller, a permanent magnet pre-tightening structure and an electromagnetic fine tuning structure are embedded on the inner wall of the bearing base body, and the outer surfaces of the permanent magnet pre-tightening structure and the electromagnetic fine tuning structure are coplanar with the inner wall of the bearing base body; the permanent magnet pre-tightening structure at least comprises two sets of permanent magnets arranged at intervals, the electromagnetic fine tuning structure at least comprises two sets of electromagnetic modules, the electromagnetic modules are located on the outer sides of the corresponding permanent magnets and tightly attached to the corresponding permanent magnets, and the magnetic direction of the electromagnetic modules is opposite to that of the permanent magnets. The thrust disc adopts a gas-magnetic division design, prevents axial movement by utilizing magnetic force, adopts a design of taking permanent magnet as a main part and taking electromagnetism as an auxiliary part, is highly integrated, does not need to occupy additional axial space, is more compact in structure, adapts to small and high-speed main shaft scenes, and is controllable in electromagnetic heating defect compared with a traditional thrust disc structure.

The utility model discloses a precision mold processing vacuum heat treatment tool which comprises a main body mechanism, the main body mechanism comprises a placing frame, a plurality of H-shaped partition plates embedded in the placing frame, transverse plates symmetrically fixed to the bottom ends of the H-shaped partition plates and sleeves symmetrically fixed to the two sides of the H-shaped partition plates, and the placing frame is used for placing a mold needing vacuum heat treatment; the placing frame comprises two opposite L-shaped side plates, a bottom plate connected with the opposite L-shaped side plates and a cross rod connected with the opposite L-shaped side plates, the two opposite L-shaped side plates, the bottom plate and the cross rod form a frame body, a mold needing to be subjected to heat treatment can be placed in the frame body, the multiple H-shaped partition plates are vertically placed in the placing frame, adjacent molds can be separated, collision between the adjacent molds is avoided, and the heat treatment efficiency is improved. The vacuum heat treatment tool for precision mold machining has the advantages that the mold heat treatment effect is improved, and the practicability is high.

This utility model relates to the field of vehicle rim mudguard technology, specifically disclosing a vehicle rim mudguard with a supporting structure, comprising: a vehicle rim mudguard body, a fixing plate, and a silicone pad. A Z-shaped bracket is installed inside the lower end of the vehicle rim mudguard body. The fixing plate is fixedly connected to the middle of the lower end of the vehicle rim mudguard body. The silicone pad is disposed on the inner wall of the vehicle rim mudguard body. An arc-shaped diversion groove is provided at the inner end of the silicone pad, and rubber open-ended round tubes are arranged side-by-side on the inner side of the arc-shaped diversion groove. Reinforcing ribs are fixedly connected inside the rubber open-ended round tubes. A reflector for increasing nighttime driving safety is provided at the outer end of the silicone pad. This vehicle rim mudguard with a supporting structure can reduce the impact force on the road surface, evenly distribute the impact force, increase the durability of the mudguard, prevent mud and water from splashing out, reduce splashing on the vehicle body and pedestrians, increase nighttime warning effect, and protect warning lights.

This invention provides an electrode assembly and a battery, relating to the field of electrode assembly technology. The electrode assembly is a wound structure formed by stacking positive and negative electrode sheets and winding them along a winding direction. The electrode assembly includes a straight region and a corner region, with the corner region located at both ends of the straight region. The positive electrode sheet includes a positive electrode starting segment located in the straight region, and the negative electrode sheet includes a negative electrode starting segment extending beyond the positive electrode starting segment in the opposite direction of the winding direction. The negative electrode starting segment extends through the corner region and terminates in the straight region. The projection of the positive electrode starting segment along a direction perpendicular to the straight region at least partially coincides with the projection of the negative electrode starting segment along a direction perpendicular to the straight region. The free end of the negative electrode starting segment shifts to form an approximately triangular shape with the negative electrode sheet, providing support for the corner region and reducing the collapse of the electrode assembly. This can further reduce the slippage of the negative electrode sheet and improve the problem of lithium plating in the corner region.