150results about How to "Reduce local stress" patented technology

The invention discloses an urban underground space engineering excavation supporting device, which belongs to the technical field of engineering excavation supporting, and comprises side supporting mechanisms and a transverse supporting mechanism, and the transverse supporting mechanism is arranged between the two side supporting mechanisms. The side supporting mechanism comprises a supporting height adjusting assembly, a secondary auxiliary side fixing assembly, an arched supporting angle adjusting assembly and a crank body, the supporting height adjusting assembly comprises a clamping head and a lower sliding seat, one end of the crank body can be clamped in the clamping head, and the crank body rotates to drive the lower sliding seat to move up and down; the arch-shaped supporting angle adjusting assembly comprises a threaded pull rod and a threaded sleeve. By arranging the side supporting mechanisms and the transverse supporting mechanism, the supporting function of underground space engineering excavation tunnels with different widths can be achieved only by adjusting the distance between the two side supporting mechanisms without the help of a power source, and the overall stability and bearing capacity are improved through cooperation of the side supporting mechanisms and the transverse supporting mechanism.

The invention discloses an open-web area structure for a concrete open-web continuous rigid frame bridge, which comprises an upper chord beam section and a lower chord beam section, the upper chord beam section is horizontally arranged, the lower chord beam section is positioned below the upper chord beam section, and the lower chord beam section is of an arc-shaped structure arched towards the upper chord beam section; the lower chord beam section is obliquely arranged and forms an integral box beam with a convergence node of the upper chord beam section; the upper chord beam section comprises a top plate and at least one upper chord web which is vertically connected below the top plate; the lower chord beam section comprises a bottom plate and lower chord webs, the number of the lower chord webs is the same as that of the upper chord webs, the upper chord webs are vertically connected to the upper portion of the bottom plate correspondingly, and the upper chord webs and the lower chord webs are connected into a whole at a convergence node through arc transition. The structure is simple, construction and stress transition are smooth, the manufacturing cost is low, construction is convenient, and durability is good.

The swash plate engine transmission mechanism comprises a swash plate, a transmission shaft, a piston and a machine body, a connecting rod and a hinged shaft pin assembly are arranged in the piston, the piston is arranged in the machine body, the connecting rod 5 and the hinged shaft pin assembly 6 are of an integrally-formed structure and are connected with the swash plate 1, shells are arranged at the two ends of the transmission shaft, and the transmission shaft penetrates through the swash plate. An inclination angle is formed between the swash plate and the transmission shaft, the swash plate comprises an outer ring and an inner ring, and a plurality of balls are arranged between the outer ring and the inner ring. The transmission mechanism has the beneficial effects that the swash plate is rotationally connected with the transmission shaft, the transmission mechanism is interchanged between rotary motion and reciprocating motion through a hinge structure of the hinge shaft pin assembly and the connecting rod, the inner plate and the outer plate replace traditional sliding motion through rolling motion, the motion stress surface is increased, local stress is reduced, and the service life of the transmission mechanism is prolonged. The bad phenomenon that the swash plate is seriously abraded due to concentrated stress points is overcome and solved, and the stability of a transmission system is guaranteed.

The utility model discloses a watchcase clamp, which belongs to the technical field of meter processing, and comprises a first support piece and a second support piece, the first support piece is arranged on the second support piece, a clamping position is formed between the first support piece and the second support piece, and the clamping position is used for accommodating a watchcase; the watchcase is sleeved outside the first support member, and in the first direction, the first support member is used for abutting against the first end of the watchcase, and the second support member is used for abutting against the second end of the watchcase. In the first direction, the first supporting piece and the second supporting piece abut against the two ends of the watchcase respectively, so that the position of the watchcase on the clamping position is limited. The watchcase is supported by the first supporting piece and is sleeved outside the first supporting piece, so that the contact area between the watchcase and the first supporting piece is increased, the watchcase is prevented from being fixed in an inner supporting and outer clamping mode, the expansion force and the clamping force of the watchcase are reduced, and the local stress on the outer surface of the watchcase is reduced; the problem that the watchcase body is directly clamped by an existing clamp and the watchcase is deformed is solved.

The utility model relates to the technical field of diaphragm pumps, and discloses a thermal stress and thermal deformation self-adaptive fluid end base which comprises a horizontal base and a vertical support, the horizontal base is in a rectangular frame shape, a connecting hole is formed in the bottom end of the horizontal base, and the vertical support is connected to the upper end of the horizontal base and comprises a fixing plate, a supporting plate and a connecting plate. The fixing plate is connected to the horizontal base, the supporting plate is in an arch shape, the bottom of the supporting plate is provided with a supporting section connected with the fixing plate, and the top of the supporting plate is provided with a leading-in angle for fixing the connecting plate. The diaphragm pump fluid end base can solve the problem that an existing conventional diaphragm pump fluid end base cannot meet the requirements for thermal stress and thermal deformation under the high-temperature working condition.

The utility model discloses a detachable guitar, and relates to the technical field of guitar structures, and the detachable guitar comprises a guitar body and two handrails. The first ends of the two handrails are connected with the guitar body, and the second ends of the two handrails are directly connected to form a closed frame structure, so that on one hand, vibration can be more smoothly conducted to the guitar body through the continuous frame structure to improve the tone consistency, and on the other hand, resonance at a specific frequency can be inhibited, noise is reduced, the tone is purer, and the tone quality is improved. The closed frame structure can effectively disperse external force, reduce local stress of the guitar body and reduce the deformation risk, on the other hand, the second ends of the two handrails are connected to the lower end of the guitar body through the threaded connecting piece after being stacked, compared with the mode that the two handrails are independently connected to the guitar body, the stacking design can reduce the number of open holes, and the number of the open holes is reduced. The completeness of the guitar body is protected.

The utility model relates to coking equipment technical field more specifically, relate to a kind of impact-resistant anti-damage ceramic lining plate configuration, comprising: lining plate body and the multiple tapered ceramic columns embedded in multiple positioning holes of lining plate body;Tapered ceramic column and positioning hole between filling have the adhesive curing fluid for forming sealing interface. In the utility model, multiple tapered ceramic columns are embedded in the positioning hole of lining plate body, when being impacted, tapered ceramic column can disperse impact force to the larger area of lining plate body, avoid impact force to concentrate in local area, to effectively reduce local stress, reduce the risk of damage due to stress concentration of lining plate;Tapered ceramic column and the adhesive fluid of aluminium dihydrogen phosphate filled between positioning hole, can form sealing interface, prevent material, dust and the like into the inside of positioning hole, avoid to cause damage to lining plate structure.

This utility model provides a car bumper with a layered energy-absorbing structure, relating to the field of automotive parts technology. Its features include a fixed bracket, a protective plate fixedly mounted on the front side of the fixed bracket, and connecting ear plates symmetrically arranged on both sides of the fixed bracket. The fixed bracket is a bent bracket, and a groove is provided between the upper part of the fixed bracket and the protective plate. The groove is filled with buffer rubber. A hydraulic damper is fixedly mounted between the connecting ear plates and the protective plate. A license plate frame is fixedly mounted at the middle of the front side of the protective plate. The end of the license plate frame is U-shaped, protruding to the front side of the protective plate, and the width of the front side of the license plate frame is greater than the width of the rear side. This utility model, through the bent structure of the fixed bracket, the buffer rubber in the groove, and the hydraulic damper, forms a multi-stage energy-absorbing system, effectively absorbing collision energy, improving safety, adapting to collision loads at different angles, and improving energy absorption efficiency.

The utility model relates to the technical field of ceramic tile transmission, and discloses a translation type elevator for ceramic tile transmission, which comprises a rack, a guide plate, an annular transmission component and a plurality of moving components, an annular rail is arranged on the vertical face of the rack, and an annular conveying assembly is installed in the annular rail and used for driving the multiple moving assemblies to move circularly along the annular rail. The guide plate is mounted on the rack and is provided with a guide rail; the guide rail is positioned behind the annular rail; the moving assembly comprises a fixing frame, a bracket, a first supporting part and at least three second supporting parts. The problems that when a conventional lifting device which moves in a reciprocating mode is used, the reciprocating speed is increased to improve the conveying efficiency, meanwhile, shaking of the device is inevitably large, the ceramic tile quality is affected, and the conveying efficiency is limited by inertia force and is difficult to further improve are solved.

The utility model discloses a carbon fiber cloth strength detection device which comprises a shell, a supporting column is fixed on one side of the bottom face of the inner wall of the shell, a limiting groove is formed in one side of the inner wall of the bottom face of the shell, a movable plate is connected into the limiting groove in a sliding mode, and clamping assemblies are fixed to the top ends of the movable plate and the supporting column. The clamping assembly comprises a clamping base, the clamping base is fixed to the top ends of the movable plate and the supporting column, an arc-shaped clamping block is fixed to the top face of the clamping base, a threaded rod is rotationally connected to one side of the clamping base, an arc-shaped clamping plate is fixed to one end of the threaded rod, a hydraulic cylinder is fixed to the inner wall of the bottom face of the shell, and the telescopic end of the hydraulic cylinder is connected with the movable plate. According to the carbon fiber cloth clamping device, the clamping assemblies are arranged, the arc-shaped clamping plates and the arc-shaped clamping blocks are used for clamping the carbon fiber cloth, the clamping range of the carbon fiber cloth is enlarged, local stress of the carbon fiber cloth is reduced, the joints of the clamping plates and the carbon fiber cloth are prevented from being torn, and the accuracy of a detection result is guaranteed.

The utility model discloses an anti-falling transfer mechanical arm which comprises a support, a longitudinal moving sliding rail and a transverse moving sliding rail are installed on the support to form a two-dimensional translation system, a clamping mechanism driven by an electric push rod installed on a sliding block of the transverse moving sliding rail is matched to ascend and descend, and it is ensured that the mechanical arm can accurately reach the position of a workpiece. A probe and a proximity sensor of the clamping mechanism achieve adaptation to the height of the workpiece, it is ensured that a clamping assembly is accurately attached to the bottom of the workpiece, and the falling risk caused by clamping position deviation during grabbing is avoided; the downward pressing mechanism is matched with the clamping assembly, stable clamping and pressing of the workpiece are achieved, the downward pressing mechanism adopts a downward pressing air cylinder as a power source, the workpiece is firmly pressed on the supporting plate through a pushing column, a downward pressing support, a pressing rod and other components, and the workpiece is effectively prevented from falling off in the transferring process.

The present invention discloses a coal-fired steam back pressure machine distributed energy supply simplified heat recovery system and method, which relates to a distributed energy supply heat recovery system, and is used to solve a series of problems in the prior art, such as drainage leakage, pipeline heat dissipation loss, and complex installation and construction, caused by the complexity of the heat recovery system. The system includes a back pressure machine, a generator, a heat network heat exchanger, and a condensate pump, and also includes a deaerator, wherein the deaerator is a built-in deaerator, the back pressure machine is connected to the generator, the back pressure machine input end receives main steam through a steam pipeline, the back pressure machine output end is respectively connected to the deaerator steam input end and the heat network heat exchanger steam input end through a steam pipeline, the heat network heat exchanger steam output end is connected to the condensate pump input end through a water pipeline, and the condensate pump output end is connected to the deaerator hot water input end through a water pipeline. The simplified heat recovery system can achieve the purpose of reducing costs and realizing economic benefits.

The utility model relates to a single-shaft cement mixing pile foundation reinforcing structure, which belongs to the technical field of building construction, and comprises a reinforcing barrel sleeved at the head of a pile body, the reinforcing barrel comprises a planting layer, a gravel layer, an expansion layer and a pouring layer which are sequentially arranged from top to bottom, the planting layer is filled with nutrient soil, and the pouring layer is filled with cement. A plurality of planting holes are formed in the top end of the planting layer, vegetation planted in nutrient soil is arranged in the planting holes, the gravel layer is filled with a plurality of gravels, the expansion layer is filled with an expansion material capable of expanding after absorbing water, a plurality of reinforcing ribs are further arranged in the expansion layer, a plurality of drainage holes are formed in the pouring layer, and the drainage holes are communicated with the gravel layer. One end of the drain hole is arranged on the top surface of the pouring layer, and the other end is arranged on the outer side surface of the pouring layer. The utility model can reduce the moisture of the soil body near the head of the cement mixing pile, thereby achieving the purposes of protecting the head of the mixing pile and reinforcing the foundation.

The utility model discloses a telegraph pole prefabricated foundation base special for a coastal mud flat area, and relates to the technical field of electric power equipment construction. The device comprises a cylindrical supporting base arranged in the vertical direction. A bracket used for being connected with a telegraph pole body is coaxially fixed to the upper end of the supporting base. The lower end of the telegraph pole body is correspondingly inserted into the bracket; the lower portion of the telegraph pole body is fixedly sleeved with a supporting flange. The supporting flange is connected with the bracket through a plurality of locking bolts; a through hole is formed in the middle of the bracket; an expanding and supporting mechanism is arranged in the supporting base; the expanding and supporting mechanism comprises a shaft seat fixed in the middle of the lower end of the supporting base; a gear control shaft is coaxially arranged in the supporting base; the lower end of the gear control shaft is correspondingly inserted into the shaft seat and rotates with the shaft seat; a limiting block is coaxially fixed to the upper end of the gear control shaft. The telegraph pole has the advantages that the stability of the telegraph pole installed in soft soil can be improved, the alkali resistance and corrosion resistance are high, and the service life is guaranteed.

The utility model relates to the technical field of plastic pipe fitting sealing, and provides a plastic pipe fitting with a sealing accessory, which comprises a sealing piece, a fixing groove is fixedly arranged in the sealing piece, an extension pipe is fixedly arranged on the inner wall of the fixing groove, and limiting lines are fixedly arranged in the extension pipe. The device ring is fixedly installed at the outer end of the sealing piece, adjusting grooves are fixedly formed in the two sides of the interior of the device ring, and the problems that when an original plastic pipe is installed, a sealing structure needs to be used for connecting two sections of plastic pipes, the interior of the plastic pipe is prevented from leaking, and the original plastic pipe is sealed through flange connection or adhesive tape winding; the technical problems that the plastic pipe sealing piece is aged after being used for a long time, the sealing piece is aged and falls off to cause leakage at the joint of the plastic pipe, and when the sealing piece is aged and falls off, the joint of the plastic pipe cannot be subjected to secondary sealing quickly, so that liquid in the plastic pipe leaks, and follow-up use is affected are solved.

The application provides an optical fiber and a preparation method thereof, and relates to the field of optical fibers.The optical fiber provided by the application comprises a fiber core, a cladding, a stress layer and a coating layer, the cladding is coated outside the fiber core, the stress layer is embedded in the cladding, the stress layer has two, the two stress layers are uniformly arranged around the periphery of the fiber core, and the coating layer is coated outside the cladding;the radius a of the fiber core is 2.75-3.25 mu m, the relative refractive index difference Delta n1 of the fiber core is 0.5-1%;the radius b of the cladding is 39-41 mu m, the cladding comprises a plurality of annular doped regions in a concentric circle structure in the radial direction of the cladding, the annular doped regions comprise a first annular region, the first annular region surrounds the fiber core outside, the relative refractive index difference Delta n2 of the first annular region is-0.1-0.3%, and the outer radius r2 of the first annular region and the outer diameter r1 of the inner circle of the first annular region satisfy the following relationship: (r2-r1) <= 3 mu m.The application provides an optical fiber and a preparation method thereof, and the coating layer of the optical fiber is not easy to fall off.

This invention relates to the field of semiconductor manufacturing technology, and more particularly to a wafer thinning method. The wafer thinning method includes the following steps: S1: halving the front side of the wafer; S2: applying a protective film to the front side of the wafer, the thickness of which is greater than or equal to 215 μm; S3: loading the wafer onto the grinding station of a thinning machine, where the thinning machine grinds the back side of the wafer, and the spindle speed of the thinning machine is 3500 rpm to 4500 rpm. The DBG process is used to thin ultra-thin wafers. By applying a protective film with a thickness greater than or equal to 215 μm to the front side of the halved wafer, the support effect on the wafer is improved, reducing stress release and wafer warping during the thinning process. By increasing the spindle speed of the thinning machine, the grinding force during the thinning process is increased, improving grinding efficiency, further reducing local stress, avoiding defects such as wafer breakage and fragmentation, and improving the product yield of the wafer.

This invention discloses a GH4169 alloy extra-large turbine disk skin structure and its design method, belonging to the field of metal material forming. The skin structure, with its forging surface radially along the center hole of the rough-machined turbine disk delivery part, includes a skin center section, a second transition section, and a first transition section connected sequentially from the inside to the outside. Both the first and second transition sections are conical surfaces, with rounded corners at their intersection. The angle between the generatrix of the first transition section and the vertical direction is θ1, and the angle between the generatrix of the second transition section and the vertical direction is θ2, where θ1 > θ2. The two-stage transition section design of the forging surface of the skin structure effectively disperses stress concentration in the central area of ​​the die during forging, significantly reducing local stress at the contact point between the die punch and the blank. The stress value can be controlled below 320 MPa, avoiding punch deformation or damage; reducing fatigue damage to the die under high stress, extending die service life, and reducing production costs.

The utility model discloses a kind of cooking utensils, it includes pot body, lug, pot cover and push button, the lug is located at the outer periphery of the pot body, the lug is integrally formed with the pot body, the lug is equipped with sliding slot, the pot cover is equipped in the upper end of the pot body, the sliding slot is opened to the side of the pot cover and is arranged, the push button has elasticity to be installed in the sliding slot, the push button is movable relative to the lug along the direction towards the pot cover and away from the pot cover to have unlocking position and lock position, in the lock position, the push button is located on the top surface of the pot cover, in the unlocking position, the push button is away from the pot cover. The connecting structure of the pot body and the pot cover of the cooking utensil of the utility model embodiment is simple, and assembly efficiency is improved.

The utility model provides a kind of double-sided planing groove board material turnover device, it is related to plate processing technical field, and it includes: hoisting mechanism, the traction end of hoisting mechanism connects clamping assembly;Clamping assembly includes U-shaped strip and the U-shaped outer groove of being set in the outside of U-shaped strip;The U-shaped opening direction of U-shaped strip and U-shaped outer groove is identical;U-shaped outer groove includes first outer side wall, second outer side wall and outer top wall;U-shaped strip includes the first inner side wall, second inner side wall and inner top wall for surrounding board piece clamping area, and the inner wall surface of second inner side wall and second outer side wall is fixedly connected;First outer side wall is provided with threaded hole along thickness direction, and threaded hole is towards first inner side wall;Adjusting bolt is threadedly connected with threaded hole, and the end of adjusting bolt is provided with pressing plate, and the axial displacement interval of adjusting bolt includes the locking position of making pressing plate and first inner side wall abutting tightly, reduce the damage degree when planing groove gypsum board turnover, provide support for planing groove processing, realize the quick low-damage overturning of planing groove gypsum board.

The utility model discloses a gas distributor which comprises a supporting ring, a container shell and a gas distribution plate, and the supporting ring is provided with a first end and a second end which are opposite to each other; one end of the container shell is open, a set of air inlet holes are formed in the other end of the container shell, the inner wall of the container shell is connected with the first end of the supporting ring in a welded mode, and the supporting ring and the air inlet holes are coaxially arranged. The gas distribution plate is welded to the second end of the supporting ring, a plurality of gas outlet holes are formed in the gas distribution plate, and an included angle smaller than 90 degrees is reserved between the axes of the gas outlet holes and the axis of the gas inlet hole; according to the gas distributor disclosed by the utility model, the gas outlet holes are provided with the flow channels with different inclination angles along different directions, and after fluid passes through the gas distribution plate, the fluid in different directions collides, rubs and stirs with one another to form vortex turbulent fluid, so that a medium is in full contact with an adsorbent, and the medium exchange is more thorough; meanwhile, the container shell is single in stress, local stress is greatly reduced, welding is convenient, the welding quality is easily improved, and the service life of the container shell is longer.

The utility model discloses a passageway opening opening and closing device and a battery swap station comprising the same, the passageway opening opening and closing device comprises a mounting door frame, a door plate, an overturning shaft and a driving mechanism, the mounting door frame forms a passageway opening in a surrounding mode, the door plate is arranged on the mounting door frame and at least partially covers the passageway opening, and the overturning shaft is arranged on the door plate. The overturning shaft extends in the horizontal direction, the extending length of the overturning shaft is the same as the width of the channel opening, the two ends of the overturning shaft are rotationally arranged on the mounting door frame, the overturning shaft is connected with the upper portion of the door plate, and the driving mechanism is arranged on the mounting door frame and connected with the overturning shaft and used for driving the overturning shaft to rotate so as to open and close the channel opening. The door plate is integrally rotationally connected to the mounting door frame through the overturning shaft, the structure of the door plate is reinforced through the overturning shaft, and the overall structural stability of the door plate and the overturning shaft is guaranteed. Through the structural arrangement, the structural stability, the movement balance and the door plate rigidity of the channel opening opening and closing device are improved, the durability of the device is improved, and the service life is prolonged.

The utility model discloses a tray assembly, a battery pack assembly and a vehicle. The tray assembly comprises a tray bottom plate and a battery pack, the tray edge beam is arranged on the outer edge of the tray bottom plate in a surrounding mode so that a containing space can be defined by the tray edge beam and the tray bottom plate together. The reinforcing pieces are located on at least one side of the tray bottom plate, and the reinforcing pieces are connected with the tray bottom plate and the tray edge beams respectively. According to the tray assembly designed by the utility model, the reinforcing piece is arranged, so that the structural strength of the joint of the tray bottom plate and the tray edge beam can be increased, the local stress is reduced, and the fatigue performance is improved.

The application discloses a ceramic-based diamond grinding wheel for wafer thinning and a preparation method and application thereof, and comprises ceramic grinding blocks arranged on an aluminum alloy base; the ceramic grinding blocks comprise 20-40% of ceramic binder, 20-40% of diamond micro powder and 30-50% of pore-forming agents in percentage by mass; the ceramic binder comprises 25-50% of silicon oxide, 20-40% of boron oxide, 6-15% of sodium oxide, 6-10% of aluminum oxide, 5-7% of zinc oxide, 4-6% of zirconium oxide, 3-5% of calcium oxide, 1-3% of magnesium oxide, 1-3% of potassium oxide and 0.5-4% of lithium oxide in percentage by mass. The application introduces lithium oxide and zirconium oxide, reduces the local stress of the ceramic binder and diamond compound, and improves the binding force; sodium oxide and potassium oxide are used in cooperation to reduce the ceramic sintering temperature, and the application effectively improves the service performance of the grinding wheel and the production yield.

The application discloses a tire pattern structure with anti-puncture and active stone discharge for gravel pavement, and relates to the technical field of tires.The technical scheme is as follows: a pattern block is arranged on a tread, pattern grooves are arranged between the pattern blocks, the groove bottoms of the pattern grooves are provided with elastic protection teeth in a zip fastener shape and engaged with each other in the circumferential direction of the tire, the elastic protection teeth are provided with an engagement gap therebetween for discharging stones, and the groove bottoms of the pattern grooves are provided with a gradient hardness buffer layer below the elastic protection teeth, wherein the Shore hardness of the gradient hardness buffer layer gradually changes from 75HA to 65HA from a surface layer in contact with the elastic protection teeth to an inner layer away from the elastic protection teeth.The application realizes the organic combination of stone discharge and anti-puncture through the synergistic effect of multiple structures, greatly reduces the early damage probability of the tire when driving on the gravel pavement, effectively prolongs the actual service life of the tire, improves the safety of the tire when driving on the gravel pavement, and has significant technical advantages and practical value compared with the prior art.

The utility model discloses a low -noise motorcycle engine cylinder cover belongs to cylinder cover technical field, it includes cylinder cover body, the inside wall of cylinder cover body is equipped with the noise reduction structure, the inside wall center place of cylinder cover body is equipped with cooling structure, the inside center upper place of cylinder cover body is equipped with support structure, the cooling structure includes cavity, the inside wall center place of cylinder cover body is equipped with the cavity, the inside center upper place of cavity is equipped with cooling pipe, in addition, the utility model discloses, can be targeted to attenuate valve knock, gas turbulence etc. high frequency noise, and the noise reduction amount reaches 10 15dB, solve the problem that high frequency noise penetrability is strong, simultaneously, absorb the vibration energy that cylinder body resonance and component low frequency impact produced, and the barrier efficiency improves 20 30%, solved the defect that low frequency noise suppression is insufficient, and, reduce gas leakage noise 8 12dB, also through the rigid vibration transmission of elastic contact reduction cylinder cover and cylinder, avoid resonance and produce additional noise.

The invention belongs to the technical field of cable erection, and particularly relates to a flexible multi-wire-diameter power cable erection device, which comprises a supporting mechanism, and is characterized in that the supporting mechanism comprises a shell with two open ends, two groups of conveying parts arranged in the shell and distributed up and down, and an adjusting part for driving the two groups of conveying parts to be close to or far away from each other; an inlet gap is formed in the side wall, close to the conveying piece, of the shell; the conveying part comprises at least two rollers, all the rollers are connected with the same belt, and a clamping gap A is formed between the two belts. According to the technical scheme, the cable penetrates through the two openings of the shell and penetrates through the clamping gap A, the screw rotates to drive the two conveying pieces to be close to each other through the base plate, the clamping gap A is shrunk to clamp the cable, and the rotating belt flexibly clamps and conveys the cable; the cable is flexibly clamped through the belt rotating in the opposite direction, and the possibility of damage caused in the cable erecting process is reduced.

The utility model relates to the technical field of photovoltaic module production, and discloses a bar code pasting device for a photovoltaic module. The conveying assembly comprises an X-axis direction moving part arranged on the rack, a Y-axis direction moving part arranged on the X-axis direction moving part and a Z-axis direction moving part arranged on the Y-axis direction moving part; the bar code picking assembly comprises an overturning part arranged on the Z-axis direction moving part and an adsorption part arranged on the overturning part; when bar codes need to be pasted, the X-axis direction moving part, the Y-axis direction moving part and the Z-axis direction moving part are matched with one another to drive the bar code picking assembly to move in the X-axis direction, the Y-axis direction and the Z-axis direction, the bar codes are adsorbed through the adsorption part, and the position of the adsorption part is adjusted through the overturning part. The method has the effect of improving the stability of picking up the bar code.

The invention provides a screw for a vertebral compression fracture surgery, and belongs to the technical field of medical instruments. The orthopedic screw comprises a head end, a threaded section and a connecting end which are sequentially connected, the head end is an elastic material piece, an arc chamfer face is arranged at the end of the head end, and a spiral thread is arranged on the side wall of the threaded section. Compared with a traditional orthopedic screw with the head end designed to be of a sharp screw point structure, the head end is subjected to arc chamfering treatment, and the head end with the arc chamfering face is used for making contact with the tail end of a bone tunnel close to an injured part; the orthopedic screw can effectively reduce local stress of a contact part between the head end and the inside of a spine in the implanting process and the subsequent process, avoids drilling or bone tunnel wall cutting when a patient moves and influences rehabilitation and healing of the patient, and effectively solves the problem of poor surgical treatment effect caused by structural defects of orthopedic screws in the prior art.

The utility model discloses a multi-layer coaming box with high connection stability, which comprises an upper supporting plate, the lower surface of the upper supporting plate is fixedly connected with supporting legs, the interiors of the supporting legs are rotatably connected with first rotating columns, one ends of the first rotating columns are fixedly connected with rotating buttons, and the interiors of the supporting legs are fixedly connected with fixing plates. The outer wall of the first rotating column is rotationally connected to the interior of the fixing plate, a gear is fixedly connected to the outer wall of the first rotating column, an eccentric wheel is fixedly connected to the outer wall of the first rotating column, and a pulley is rotationally connected to the outer wall of the eccentric wheel. According to the multi-layer coaming box, the sliding frame reciprocates in a small range, then the sliding columns are driven to slide on the inner wall of the sliding frame and slide in the fixing blocks at the same time, when the sliding columns slide into the supporting foot sleeves, fixing of the multi-layer coaming box is completed, and therefore the effect of fixing the bottom of a tray of the multi-layer coaming box is achieved; therefore, the goods can be effectively prevented from moving, and the placing position of the goods is kept stable.