164 results about "Mutual engagement" patented technology

The invention discloses an intelligent conveying device and method for glass fiber pipe production, and relates to the technical field of glass fiber pipe production. A raw material carrying mechanism is arranged, a first arc-shaped rack, a second arc-shaped rack and a third arc-shaped rack on the raw material carrying mechanism can be matched with a first release control assembly, a second release control assembly and a third release control assembly at the corresponding positions, and raw materials in the first release control assembly, the second release control assembly and the third release control assembly are correspondingly driven to be quantitatively released; the meshing time of the first release control assembly, the second release control assembly and the third release control assembly can be controlled by controlling the lengths of the first arc-shaped rack, the second arc-shaped rack and the third arc-shaped rack, then the purpose of quantitatively releasing raw materials is achieved, and the release amount of the corresponding raw materials can be controlled by calculating and replacing the lengths of the arc-shaped racks at the corresponding positions. The device can be suitable for the production work of various glass fiber pipes; the control precision is strictly controlled by the length of the arc-shaped rack and is not influenced by human factors, and the proportioning precision of production raw materials is greatly improved.

Hinge for the mutual engagement of panels composed of two opposed wing-like elements (1, 2), each of them including a basic body provided with through-holes for housing fixing screws to a panel and with engagement means with the wing-like complementary element provided at a lateral end of said basic body, at the end of the mutual engagement area locking means (3) for engagement of one wing with respect to the other are provided, characterized in that the former of said wing-like elements (1) includes a basic body (14), having a rectangular trapezium profile, the end opposite to the vertical side of which being rounded in order to house a round-profiled cavity (15) therein; the latter of said wing-like elements (2) in turn includes a basic body (23) having a partially polygonal and partially rounded profile at the engagement end with the complementary wing-like elements (1), said rounded portion making up a cylindrical body that about halfway through along its height tapers to form a pin (23); the locking element (3) provides engagement and manoeuvring means on an outer surface and sealing engagement means of said wing-like means.

The utility model relates to the technical field of forging feeding, in particular to an automatic feeding device for a forging machine, which comprises two vertical frames, a transverse plate is integrally formed between the top ends of the two vertical frames, the surfaces of the vertical frames are rotatably connected with screw rods, the surfaces of the screw rods are slidably connected with a lifting plate, and the surface of one end of the lifting plate is hinged with a baffle. A material guide plate is fixedly connected between the two baffles, a sleeve plate is fixedly connected to the surface of the material guide plate, an adjusting plate is rotatably connected to the surfaces of the baffles, a round rod is fixedly connected to the surface of the adjusting plate, and the round rod abuts against the surface of the sleeve plate. The feeding device can be in butt joint with forging machine workbenches of different heights, the universality of the feeding device is improved, adjusting plates are installed on the two sides of the lifting plate, limiting blocks and limiting grooves are arranged and clamped with each other, the flow and speed of workpieces in the material guiding channel are adjusted, the situation that the workpieces deviate or accumulate is avoided, and the production flexibility and efficiency are improved.

The invention provides a grain storage process of an airtight heat insulation type green grain storage container, and relates to the technical field of grain storage, the grain storage process comprises the following steps: S1, arranging an air film bin; the cover body is opened, the air film bin is laid in the box body, the grains are placed in the air film bin, and after the grains are placed, the air film bin is controlled to be closed; and S2, gas protection structure arrangement is conducted, specifically, the multiple airtight protection assemblies sequentially penetrate through the installation panel from one side, the airtight protection assemblies slide to the preset positions, and the airtight protection assemblies and the installation panel are controlled to be in a mutually-engaged sliding state. The air bags do not need to be pumped during preliminary installation, installation and arrangement of workers are facilitated, after the multiple airtight protection assemblies are arranged, the expanded air bags abut against one another to push the air bags and the positioning plates on the inner sides to slide to the preset positions, finally, a compact gas protection face is formed, simplicity and convenience are achieved, the overall arrangement time is shortened, and the working efficiency is improved. And the overall arrangement difficulty is greatly reduced.

The utility model discloses a quick assembly type plastic roll core plug which comprises a sealing plug body, the outer wall of the sealing plug body is fixedly connected with an outer sealing ring strip, and one end of the sealing plug body is provided with an adjusting mechanism in a positioning mode. According to the rapid assembly type plastic roll core plug, an operator can insert the sealing plug body into the interior needing to be plugged, then the outer sealing protection sleeve is used for wrapping one end of the exterior of a pipeline, and the inner anti-skid gasket is used for enhancing the external sealing performance and the anti-skid effect of the outer sealing protection sleeve; a limiting rotating block is manually rotated, and a control thread and a penetrating adjusting hole are mutually meshed, so that a rotating adjusting rod is controlled to move, the sealing plug main body is pushed to move, the sealing performance of the plug is enhanced, the sealing plug main body can move to the deep position of the interior needing to be sealed, the sealing plug main body is not prone to falling off, and the service life of the plug is prolonged. And the internal sealing performance is also enhanced through the outer sealing ring strip.

The utility model provides a direct current multi-branch quick access box, which belongs to the technical field of access boxes, and comprises a box body, box doors which are symmetrically distributed are rotatably connected to the outer wall of the box body, side fixing frames which are symmetrically distributed are fixedly connected to the inner wall of the box body, and main clamping blocks which are symmetrically and fixedly connected to the inner walls of the side fixing frames, and a plurality of groups of main clamping blocks are uniformly distributed. According to the utility model, the main clamping block and the auxiliary clamping block are meshed with each other, so that the structure integrally connected with the auxiliary clamping block comprises the mounting frame which is limited after being subjected to height adjustment, any height of equipment mounted on the mounting groove can be adjusted, and the device is suitable for internal mounting equipment with different heights, is strong in universality, and is convenient to use. The problems that in the prior art, an internal structure is installed at a fixed position, the height cannot be adjusted according to needs so as to adapt to the height of installed equipment, and the universality is poor are solved.

Deflector (10) for inter-row spreading of granular or powdered products such as fertilisers, insecticides and the like, designed to be mounted on a supporting structure of a distributor (2) of the centrifugal type. The deflector (10) comprising a deflector supporting structure (11) on which there is mounted at least one collector (12) of the product which is thrown by the centrifugal distributor (2) and at least one throwing pipe (15; 16) which extends from the collector (12) in order to deflect the thrown product in a spreading direction. In addition, the deflector (10) also comprises removable fixing means for fixing the supporting structure of the deflector (11) to the supporting structure of the distributor (2). The fixing means in turn comprise a first attachment element (21) which is designed to be fixed to the supporting structure of the distributor (2) and a second attachment element (22) which is provided to be fixed to the supporting structure of the deflector (10). The attachment elements (21, 22) have means and counter-means for mutual engagement in a mutual coupling position.

The utility model provides an adjustable glasses nose pad, which relates to the technical field of glasses, and is characterized in that the adjustable glasses nose pad comprises a nose pad fixing frame, a rotating piece and a nose pad body, the rotating piece is rotatably arranged on the nose pad fixing frame, the nose pad body is fixedly arranged on the rotating piece, and the nose pad body is fixedly arranged on the rotating piece. And clamping groove and clamping block structures which are clamped with each other are arranged on the nose pad fixing frame and the rotating piece. Through the multi-gear clamping groove and clamping block structure between the rotating piece and the nose pad fixing frame, stepped adjustment of the angle of the nose pad is achieved. The clamping blocks can be embedded into the clamping grooves in different positions, so that the silica gel nose pad body forms multi-angle support, the individual requirements of different nose bridge heights and widths are met, and the wearing adaptability is remarkably improved.

The utility model belongs to the technical field of rail transit, and particularly relates to a movable signal lamp for rail transit, which comprises a signal lamp body, a base abutted against the bottom surface of the signal lamp body, a vertical column welded on the top surface of the base, a remote control module in threaded connection with the top surface of the vertical column through bolts, and a motor electrically connected with the remote control module through a power line. The surface of a motor shaft is in threaded connection with the surface of the transverse end of the gear. According to the utility model, through mutual cooperation among the stand column, the remote control module, the motor, the gear, the toothed plate, the sliding block and the limiting groove, the remote control module starts the motor to drive the gear to rotate according to the actual traffic condition and the visual field height of a driver to which the driver needs to face, so that the toothed plate and the signal lamp body which are meshed with each other are driven to adjust the height; therefore, drivers with different view heights can safely drive on the track under the command of the traffic signal lamp.

The invention relates to a resilient claw clutch for transmitting a torque M acting about a rotational axis from a drive device to a driven device, having a first engagement element with first claw teeth and a first gap formed by the first claw teeth, and a second engagement element with second claw teeth and a second gap formed by the second claw teeth, the first claw teeth and the second claw teeth together being in a state of mutual engagement and delimiting an accommodation space, into which an elastic pressure body can be inserted such that the elastic pressure body elastically, torque-transmittingly force-couples the first engagement element with the second engagement element, several first claw teeth and several second claw teeth being designed such that several accommodation spaces are arranged in a circumferential direction R X successively in a radial direction R U and in a radial direction R R .

The utility model belongs to the technical field of clocks and watches, in particular to a mechanical clock movement, which comprises a transmission mechanism, a pointer transmission shaft, a transmission adapter assembly and a thread assembly seat are arranged at the top of the transmission mechanism, and the pointer transmission shaft penetrates through the transmission adapter assembly and the thread assembly seat; the linkage bearing is guided through the connecting ring sleeve and the fixed ring sleeve which are arranged in a split mode, so that the rotating sleeve can stabilize rotating connection of a driving piece in the transmission mechanism through the linkage bearing. Meanwhile, a guiding space formed by the connecting ring sleeve and the fixing ring sleeve for the linkage bearing is exposed to the outside by releasing mutual clamping of the positioning clamp and the clamping convex groove, and then a gap between the connecting ring sleeve and the fixing ring sleeve can be directly filled with a paste lubricant; or the rotating sleeve is directly pulled out from the position between the connecting ring sleeve and the fixed ring sleeve to the outside to be lubricated, so that the normal transmission efficiency of the transmission mechanism to the rotating sleeve is not influenced while the machine core is convenient to maintain.

The utility model relates to the technical field of adhesive tape processing equipment, and discloses an adhesive tape paper core installing and rolling frame which comprises a box body, an installing shaft located at the bottom end of the interior of the box body and a plurality of sets of adjusting frames located at one end of the interior of the box body. The supporting frames are arranged at the two ends of one side of the box body, and a movable buckle is arranged between the two supporting frames; the supporting rod is arranged in the supporting frame, and a spring is arranged at the top end of the outer side of the supporting rod; the supporting block is arranged at the bottom of one side of the box body. According to the utility model, the limiting block I and the limiting block II are mutually clamped with the limiting groove, so that the paper core, the mounting wheel and the mounting shaft can be limited, the paper core, the mounting wheel and the mounting shaft can synchronously rotate, and the mounting plate and the box body can be quickly disassembled and assembled through the movable buckle, the supporting rod, the spring and the supporting block; and the mounting shaft can be conveniently and quickly disassembled and assembled, so that the paper core can be conveniently and quickly disassembled and assembled.

The utility model discloses a cone crusher for tailing waste. The cone crusher comprises a crusher compression-resistant shell, two feeding semicircular funnels and a cone crushing hammer body arranged in the crusher compression-resistant shell. According to the utility model, under the interaction of the crushing machine pressure-resistant shell, the feeding semicircular funnels, the conical crushing hammer body, the limiting ring, the limiting clamping groove, the rotating shaft and the arc-shaped sliding rod, the two feeding semicircular funnels are fixed at the top of the crushing machine pressure-resistant shell through the plurality of capped bolts; a limiting ring and a limiting clamping groove are mutually embedded, so that the feeding semi-annular funnel can be prevented from falling off from the crushing machine compression-resistant shell, two curved-surface anti-collision discharging plates are arranged, and waste can be prevented from splashing in the waste machining process of the conical crushing hammer body, so that the device is safer; meanwhile, the two feeding semi-annular funnels serve as main impact objects of the waste materials, so that the waste materials can be prevented from directly damaging the top of the crushing machine compression-resistant shell, and the service life of the crushing machine compression-resistant shell is greatly prolonged.

The utility model discloses a left-right bin changing structure for a suction nozzle of an atomizer, relates to the technical field of suction nozzles of atomizers, and aims to solve the problem that if a user wants to change the taste, the whole atomizer main body needs to be disassembled, an oil bin needs to be replaced and then the atomizer main body is reassembled. An oil cup is installed at the upper end of the interior of the shell, the upper end of the oil cup corresponds to a suction nozzle, a detachable pushing and pressing buckle structure is arranged at the lower end of the suction nozzle, the lower end of the suction nozzle is connected with a suction nozzle support in a sliding mode, the suction nozzle support is fixed to the upper end of the shell, and sliding grooves are formed in the two sides of the inner wall of the suction nozzle support. According to the electronic cigarette liquid cup, the structure is novel, and through the design that the first cigarette liquid bin and the second cigarette liquid bin are formed in the cigarette liquid cup, the requirements of a user for electronic cigarette liquid of various tastes are met; the suction nozzle is driven to slide left and right through mutual clamping of the protruding block and the sliding groove, and the oil bins with different tastes are switched.

The utility model relates to the technical field of charging piles, in particular to an anti-theft electric vehicle charging pile which comprises a connecting column, a U-shaped baffle is rotationally connected to the outer surface of the connecting column, two inserting grooves are formed in the outer surface of the U-shaped baffle, and a fixing box is fixedly connected to the outer surface of the connecting column. The inner wall of the fixed box is rotationally connected with two gears, and the outer surface of each gear is meshed with the other gear. According to the key chain, the key body can be inserted into the key chain, then the key body is rotated to drive the corresponding gear to rotate, the two gears are driven to rotate reversely at the same time through mutual engagement between the two gears, and at the moment, rotation of the gears can drive the corresponding clamping plates to rotate around the corresponding gears at the same time; and at the moment, the U-shaped baffle plate can be locked through clamping connection between the clamping plate and the corresponding slot, so that the anti-theft effect of the detachable charger can be achieved through locking of the U-shaped plate.

The utility model relates to a cooling plate easy to disassemble, which comprises a cooling plate body, a lifting lug and two plugs, a cooling channel is arranged in the cooling plate body, two sand cleaning holes in the front-back direction are arranged on the rear end face of the cooling plate body, and the two sand cleaning holes are both communicated with the cooling channel; the lifting lug is mounted at the central position of the rear end surface of the cooling plate body and is positioned between the two sand cleaning holes; the sand cleaning device is characterized in that external threads are arranged on the outer walls of the two plugs, internal threads matched with the external threads are arranged on the inner walls of the two sand cleaning holes, and the two plugs are installed in the corresponding sand cleaning holes through mutual matching of the external threads and the internal threads; the cooling plate easy to disassemble is further provided with two lifting bolts, and the rod portions of the two lifting bolts are matched with the internal threads on the inner walls of the corresponding sand cleaning holes respectively. According to the cooling plate easy to disassemble, drawing points can be increased, the lifting lugs and the cooling plate body are prevented from deforming in the drawing process, and later maintenance of the cooling plate is facilitated.

The elevator steel structure derrick comprises a supporting vertical rod, transverse rods are installed at the upper end and the lower end of the inner side of the supporting vertical rod, clamping blocks are connected to the two ends of each transverse rod, and installation grooves are formed in the connecting positions of the transverse rods and the supporting vertical rod. Telescopic connecting rods are connected to the inner sides of the positioning rods, positioning bolts are installed on the two sides in the positioning rods, and positioning holes are formed in the connecting positions of the supporting vertical rods and the positioning rods; fixing bolts are mounted on the inner sides of the triangular blocks; protruding blocks are connected to the two ends of each supporting column, and butt joint holes are formed in the connecting positions of the supporting columns and the transverse rods. Compared with an existing device, the elevator steel structure derrick has the advantages that the supporting columns and the transverse rods can be conveniently clamped through the protruding blocks and the butt joint holes, so that the supporting columns can be conveniently additionally arranged between the transverse rods according to needs to improve supporting of the derrick frame, and the transverse rods and the supporting vertical rods can be reinforced and supported through the triangular blocks; therefore, the frame can be prevented from deforming.

The present invention facilitates adjustment to a desired leakage inductance value and prevents narrowing of a coil winding area.　The present invention comprises: first and second magnetic cores (not illustrated) combined such that three legs of each of the cores have leading-end parts that oppose each other and the middle leg is inserted into a hollow part 42C of a bobbin 4; and a ring-shaped third magnetic core 3 divided circumferentially and mounted on the outer circumferential surface of a winding shaft part 21 of the bobbin 4 so that a desired leakage inductance value is generated according to the positional relation to the two magnetic cores, wherein the mounting of the third magnetic core 3 on the winding shaft part 21 is achieved by the mutual engagement of a plurality of first engaging parts 64 arranged circumferentially on the outer circumferential surface of the winding shaft part 21 and a second engaging part 65 arranged circumferentially on the inner circumferential surface of the third magnetic core 3 (only one magnetic core portion 3A is illustrated) so as to correspond with the first engaging parts 64.

The utility model relates to the technical field of glass curtain wall installation, in particular to a glass curtain wall construction installation positioning support structure with an angle adjusting function, which comprises a positioning support structure main body and a glass curtain wall, a base and a base guide rail which are mutually clamped are arranged at the bottom of the positioning support structure main body, and a supporting frame is fixed at the upper end of the base. Lifting hydraulic cylinders are symmetrically fixed in the supporting frame, a lifting positioning frame connected with the movable ends of the lifting hydraulic cylinders is arranged above the supporting frame, a mounting stabilizing frame is arranged on the side face of the lifting positioning frame, and hinge seats clamped and matched with each other are arranged between the mounting stabilizing frame and the lifting positioning frame. And a connecting gear shaft is inserted and fastened between the hinge seats. According to the glass curtain wall construction installation positioning support structure with the angle adjustment function, corresponding positioning adjustment can be carried out according to the size of a glass curtain wall, multi-directional adjustment can be carried out in the glass curtain wall installation process, the safety protection performance in the glass curtain wall installation process is ensured, and meanwhile the positioning efficiency is improved.

The utility model relates to the technical field of dining tables, in particular to a light-weight anti-corrosion scratch-resistant dining table which comprises a table plate body, a covering plate is installed on the top face of the table plate body, a plurality of strip-shaped clamping grooves are symmetrically formed in the bottom face of the table plate body, and the strip-shaped clamping grooves are formed in the side edge direction of the table plate body at equal intervals. The table board body and the H-shaped table legs are oppositely installed through mutual clamping between the strip-shaped clamping grooves and the positioning connecting rods, the limiting assemblies can play a role in limiting the installation position, and the H-shaped table legs on the two sides are linked under the cooperation of the linkage rings and the limiting sleeves at the two ends of the table leg connecting rods. When the limiting sleeves are clamped with the strip-shaped clamping grooves in different positions, the relative included angle between the two H-shaped table legs is changed, then the relative distance between the bottoms of the H-shaped table legs and the table plate body is adjusted, the requirement of a user for the height of the table plate body is met within a certain range, and the practicability of the device is improved.

The utility model discloses a myasthenia gravis rehabilitation exercise device which comprises a bottom plate, the middle position of the top of the bottom plate has a resistance exercise function, a grip is installed in the middle position of the top of the bottom plate, and supporting plates are arranged in the middle positions of the two sides of the end, close to the grip, of the top of the bottom plate. The tops of the two supporting plates are jointly provided with a seat cushion, and the inner bottoms of the two supporting plates are jointly provided with a rotating rod in a penetrating mode; through the cooperation of the work of a motor and the mutual engagement of a gear I and a gear II, the rotation work of a rotating disc can be realized, then the rotating disc drives a pedal sleeve plate to rotate so as to simulate the pedal operation of the bicycle, and through the design of the motor, the intelligent rotation work of the pedal can be realized, and a patient does not need to pedal the pedal in the later period; through the structural design of the component, a relatively serious patient in the later period can conveniently sit and stand for exercise work, and the function of exercising the legs of the patient is achieved by means of external force.

The present invention provides a low-noise server capable of reducing deformation of the insertion and extraction slots of the chassis cover, including a main body. One side of the main body is provided with an inner slot opening and an insertion and extraction slot protection mechanism. The insertion and extraction slot protection mechanism includes a left protection component and a right protection component. The left protection component is arranged on one side of the inner slot opening, and the right protection component is arranged on the other side of the inner slot opening. The inner slot opening includes a closed state and an insertion state. When the inner slot opening is in the closed state, the left protection component and the right protection component are engaged with each other to shield the inner slot opening. When the inner slot opening is in the insertion state, the left protection component and the right protection component are separated from each other to expose the inner slot opening. When in use, the mutual engagement of the left protection component and the right protection component can protect the insertion and extraction slot opening. By using the structure of the spring frame itself, the limiting member and the alignment elastic limiting member are opened to both sides, and then the plug is inserted forward into the slot opening, which can also limit the posture of the user's insertion and extraction angle.

The utility model relates to the technical field of film pressing machines, and discloses a vacuum film pressing machine which comprises a bottom plate, dampers are fixedly installed at the four corners of the upper surface of the bottom plate, a film pressing machine body is fixedly installed at the top ends of the four dampers, a groove is formed in the lower surface of the bottom plate, and the bottom plate is fixedly connected with the film pressing machine body. The device comprises a base, a groove is formed in the base, two screw rods are rotationally connected to the top wall in the groove and symmetrically distributed on the top wall in the groove, the surfaces of the two screw rods are both sleeved with threaded sleeves in a threaded mode, the bottom ends of the two threaded sleeves are both fixedly connected with connecting plates, and the lower surfaces of the two connecting plates are both provided with a set of movable wheels. The surface of each screw is fixedly sleeved with a worm wheel, a worm is rotationally connected between the two side walls of the interior of the groove, the worm is meshed with the two worm wheels, and when the film pressing machine is used, the film pressing machine can be rapidly and conveniently transferred and moved, time and labor are saved, and meanwhile the film pressing machine has a certain leveling function.

The invention discloses anti-aging PP particle raw material mixing equipment and a mixing method.The mixing equipment comprises an equipment body, a hopper and a vane pump feeding module are arranged in the equipment body, a gear feeding module is installed in the hopper, and the gear feeding module comprises a meshing gear set and a driving shaft; the meshing gear set comprises a driving wheel and a driven wheel, the meshing gear set conveys solid powder raw materials downwards from a tooth gap through mutual meshing, the driving shaft is connected with the driving wheel, and the driving wheel is connected with an external motor through the driving shaft to achieve driving rotation; the vane pump feeding module comprises a vane pump and a transmission shaft, the transmission shaft is connected with a rotor of the vane pump to drive the vane pump to operate, a first transmission chain is arranged between the transmission shaft and the driving shaft, and the transmission shaft and the driving shaft are in transmission connection through the first transmission chain. And the vane pump can adjust the flow of the output liquid raw material according to the rotating speed of the driving wheel.

The utility model discloses an integrated mini-tiller arm-rest frame assembly convenient for angle adjustment, which comprises an arm-rest seat, an arm-rest frame and an adapter, the arm-rest frame is a U-shaped pipe which is integrally bent and formed, and one end of the adapter is fixedly arranged at the bent part of the arm-rest frame; a screw rod with the end penetrating through the left side and the right side of the armrest seat is arranged at the end, close to the adapter, of the armrest seat, and the left side and the right side of the armrest seat are each provided with a first end face gear arranged on the screw rod in a sleeving mode. Two second end face gears which sleeve the left side and the right side of the screw rod and are meshed with the first end face gears on the corresponding sides are arranged at one end, opposite to the armrest seat, of the adapter; and locking nuts which are in threaded fit with the screw rod are arranged on the screw rod and outside the two second end face gears. By arranging the adapter and arranging the first end face gear and the second end face gear which are meshed with each other at the connecting end of the adapter and the armrest seat, the rotating angle of the armrest frame can be accurately controlled, and meanwhile, the structure of the rotating end is more stable.

The utility model relates to the technical field of water level detection, in particular to a mechanical character wheel display device of a floating ball type water level gauge, which comprises a shell, a rack is slidably mounted in the shell, a floating ball is fixedly mounted at the bottom of the outer wall of the rack, a gear is movably mounted in the shell, the rack is meshed with the gear, and a display component is mounted on the outer wall of the shell. The display assembly comprises a first rotating wheel, a second rotating wheel and a third rotating wheel, the second rotating wheel is movably mounted on the right side of the first rotating wheel, and the third rotating wheel is movably mounted on the right side of the second rotating wheel; the outer wall of the gear is fixedly connected with a first bevel gear, and the outer wall of the first rotating wheel is fixedly connected with a second bevel gear. According to the utility model, the rack is driven by the floating ball, the rotating wheel is rotated through the transmission of the gear and the bevel gear, decimal counting is realized, the water level is visually displayed by the digital block, the problem that the water level is inconvenient to visually observe by the traditional floating ball detection device is solved, and the convenience and accuracy of water level monitoring are improved.

Disclosed is a semi-automatic adjustable-dose syringe, including a syringe cylinder, an adjustment cylinder, a piston sleeve rod, a T-shaped piston adjustment rod, a first spring, an outer pull cap, second springs and a needle break-proof buffer cap. An exterior of a left side of the syringe cylinder is threadedly connected to the adjustment cylinder through mutual engagement; and the adjustment cylinder is internally housed within the outer pull cap, with a sliding connection between an outer wall of the adjustment cylinder and an inner wall of the outer pull cap. The present disclosure can prolong the service life of the syringe by changing and adjusting structures and component combinations of the syringe itself, which effectively reduces wear and waste of components, ensures safe operation and saves time and labor, significantly minimizing physical harm and energy consumption of epidemic prevention personnel.

The utility model relates to the technical field of wastewater treatment, and provides an automatic dosing device for oily sewage, which comprises a supporting seat, the universal wheels are arranged at four corners of the surface of one side of the supporting seat; the protective shell is arranged on the surface of the supporting seat, a limiting groove is formed in the surface of the protective shell, a hydraulic cylinder is arranged on the inner wall of the protective shell, an L-shaped connecting rod is arranged at the output end of the hydraulic cylinder, and the L-shaped connecting rod is embedded in the limiting groove in a sliding mode. According to the device, when the device moves to a designated place, the transparent barrel is filled with chemicals, the first gear drives the second gear meshed with the first gear to rotate through work of the driving motor, the connector on the surface of the conveying pipe rotates in the sealing gasket, and meanwhile sealing work is provided; and the medicament falls into the conveying pipe through gravity, so that the intermittent dosing work is completed, and the waste of medicament materials is reduced.

The utility model discloses a tire building machine transfer ring full-wrapping clamping tile block which comprises a fixed tile block. The elastic piece is arranged in the fixed tile; the movable tile block is movably connected to the interior of the fixed tile block through the elastic piece; when the movable tile blocks on the multiple sets of fixed tile blocks are in butt joint, a gapless circle is formed and used for tire blank forming of a tire, and the gapless true circle state can be kept in the opening and clamping state. And the telescopic surfaces of the tiles adopt a mode that the semicircular bulges and the semicircular grooves are clamped with each other, so that the tiles are tightly attached, and the roundness and the uniformity of the tire in the tire blank forming process are improved. Through the unique structural design, the tile block can always keep a gapless true circle in an opening and clamping state, so that a tire blank is ensured to obtain uniform shaping force in the forming process, and the roundness of the tire blank and the overall uniformity of the tire are effectively improved.

The application discloses a tractor electric proportional power reversing valve group, which comprises a valve body, an overflow valve, a reversing electromagnetic valve and a cut-off electromagnetic valve arranged on the valve body; the cut-off electromagnetic valve oil inlet is connected with an oil inlet channel; the cut-off electromagnetic valve oil outlet, the reversing electromagnetic valve oil inlet and the overflow valve oil inlet are connected in parallel through an oil inlet channel two; the reversing electromagnetic valve forward gear oil outlet is connected with a working oil channel one; the reversing electromagnetic valve backward gear oil outlet is connected with a working oil channel two; the overflow valve oil outlet is connected with an oil return channel four; the reversing electromagnetic valve oil return and the cut-off electromagnetic valve oil return are connected in parallel to an oil return channel two. Through the interaction between the overflow valve and the proportional electromagnetic valve, the proportional electromagnetic valve is provided with different currents in different time periods, adjustable working oil pressure is provided for the clutch oil filling, the process from the clutch oil filling to mutual engagement and tightness of the clutch internal friction plate is soft and free of impact, and the mechanical transmission effect is achieved.