54results about How to "Avoid over-squeezing" patented technology

The utility model relates to the technical field of zipper tooth arranging and assembling, and discloses a zipper tooth arranging and assembling device which comprises a workbench, the top of the workbench is fixedly connected with a zipper tooth arranging machine used for conducting tooth arranging on a zipper belt, the top of the workbench is fixedly connected with a feeding frame, and the top of the workbench is rotationally connected with a tightening roller through a supporting plate. A motor is fixedly connected to the side wall of the supporting plate, the output end of the motor is fixedly connected to a center shaft of the tightening roller, a mounting plate is fixedly connected to the top of the workbench, two guide wheels are rotationally connected to the side wall of the mounting plate, and a tension adjusting mechanism used for adjusting tension of the chain belt is arranged on the side wall of the mounting plate. According to the zipper tooth arrangement assembly device, accurate adjustment of the tension of the zipper belt is achieved through the tension adjusting mechanism, and the problems that in the prior art, a zipper tooth arrangement assembly device cannot adjust the tension of the zipper belt, and the zipper belt is prone to loosening or tensile deformation are solved.

The application relates to the technical field of pipeline detection, and discloses a pipeline detection device suitable for multifunctional tests, which comprises a bottom plate, an inner supporting circular table I arranged above the bottom plate, an inner supporting circular table II arranged directly above the inner supporting circular table I, a solid interior of the inner supporting circular table I, a hollow interior of the inner supporting circular table II, an open cylinder slidingly connected to the outer wall of the inner supporting circular table I, a hydraulic rod fixedly installed on the inner wall of the open cylinder, a rotating connection between the output end of the hydraulic rod and the bottom of the inner supporting circular table I, a water injection assembly capable of injecting water into the pipeline interior arranged outside the inner supporting circular table II, water injection of the water injection assembly into the pipeline interior through the inner supporting circular table II, full water in the pipeline to simulate the conveying medium state, a pressure medium provided for leakage detection, and a pipeline wall leakage point capable of being detected, the pipeline being in a full water state after water injection, a small amount of water penetrating outward and flowing downward along the pipeline outer wall to provide a detection signal for a humidity detection head if there is a small leakage point on the pipeline wall.

This utility model discloses an anti-loosening fixing structure for cable joints, relating to the field of cable joint technology. It includes a first cable body, with a first cable head fixedly connected to one end of the first cable body. A second cable head is engaged with one end of the first cable head, and a second cable body is fixedly connected to one side of the second cable head. This anti-loosening fixing method achieves initial connection by splicing the first and second cable heads. A clamping plate, in conjunction with a double-ended screw and nut, tightly secures the two, ensuring a stable connection. Rotating the fixing frame causes a locking plate to engage with a slot for positioning, further stabilizing the structure. The fixing frame drives an adjusting screw to rotate within a threaded sleeve, pushing an annular plate to further reinforce the cable within the mounting sleeve. This strengthens the connection strength of the cable joint from various aspects, effectively reducing the risk of cable joint detachment, ensuring the stability and safety of cable transmission, and extending the cable's service life.

The invention relates to an energy storage device and a power utilization system. The energy storage device comprises a shell, an electrode assembly, an end cover assembly and a binding piece, wherein the shell is provided with an accommodating cavity; the electrode assembly is arranged in the accommodating cavity, the electrode assembly comprises a plurality of tabs and an electrode main body which are electrically connected, and the tabs and the electrode main body are arranged along a first direction; the end cover assembly is arranged on one side of the shell and used for sealing the containing cavity. The binding piece is positioned between the end cover assembly and the electrode main body; the binding piece is provided with a penetrating hole, and the penetrating hole penetrates through the two opposite surfaces of the binding piece in the first direction. The penetrating hole extends along a second direction, the plurality of tabs penetrate through the penetrating hole, and the first direction is intersected with the second direction; the penetrating hole is provided with a first side wall and a second side wall which are oppositely arranged in the second direction, and in the second direction, the distance between the first side wall and the second side wall is larger than the size of the ends, close to the electrode body, of the tabs.

The utility model provides a novel loudspeaker positioning tool which comprises a tool body, a positioning groove is arranged on the tool body, the positioning groove is used for placing a loudspeaker basin stand, an extension block is arranged on the side wall of the tool body, a sliding rail perpendicular to the length direction of the tool body is arranged on the extension block, and the positioning groove is used for positioning the loudspeaker basin stand. A sliding rail is arranged on the base, a movable sliding block is arranged on the sliding rail in a sliding mode, a positioning contact pin located above the positioning groove is fixed to the movable sliding block, and when the loudspeaker frame is placed in the positioning groove, the movable sliding block moves in the direction close to the loudspeaker frame, so that the positioning contact pin abuts against the loudspeaker frame from the upper portion. Therefore, the loudspeaker basin stand is limited. On one hand, the loudspeaker basin stand is fixed through sliding fit of the movable sliding block and the sliding rail, the loudspeaker basin stand is convenient to disassemble, on the other hand, non-rigid clamping is achieved through the sliding mechanism, excessive extrusion of a traditional clamp on the basin stand is avoided, and the deformation risk is reduced.

The utility model provides a kind of power battery multi-module folding type welding cold plate structure, it is related to new energy battery technical field, including module cold plate assembly, first module cold plate and second module cold plate, the both sides of module cold plate assembly are equipped with edge, the front of edge is equipped with water outlet, the back of edge is equipped with water inlet, the end of water inlet and water outlet is equipped with sealing ring, the outside of module cold plate assembly includes cold plate outer wall, power battery multi-module folding type welding cold plate structure is designed by three kinds of assembly forms of module cold plate assembly, and the cooling demand of different battery module can be flexibly adapted. In the first form, first module cold plate and second module cold plate are integrated by welding and form sealing, internal S-shaped support septum is connected to form limiting step, provide high rigid support, suitable for high-strength battery module scene;The flexible of the second form of partition type design and reserved gap is enhanced, and the large deformation caused by cell expansion is adapted.

The utility model provides a disc starter culture turns over mechanism, including disc starter culture machine, is set up in disc starter culture machine and has the feed inlet and the discharge gate, and the inside bottom center of disc starter culture machine is provided with the central pedestal, the outside of central pedestal is provided with the rotary disc of continuous rotation, the upper end surface fixed connection fixed pillar of central pedestal, the center shaft, the center shaft rotation is connected in the fixed pillar inside, the center shaft is connected with the lifting ring on the screw, the side fixed connection of lifting ring is connected with the connecting plate, the connecting plate passes through the lifting groove that sets up on the fixed pillar, is connected with the lifting beam, the lifting beam bottom is provided with the starter culture subassembly for turning over the starter culture on the rotary disc, the utility model discloses, through setting first, second and third starter culture blade, the starter culture on the bottom layer is turned over, the starter culture of middle layer dispersion increases with the air and the area of contact, the starter culture of upper layer is smashed and prevents the caking, has improved starter culture efficiency and the stability of starter culture quality.

This utility model provides a packaging carton flipping device, including horizontally arranged first and second conveyor belts and a stop shaft. The first conveyor belt transports the carton, and the second conveyor belt is offset vertically from the first conveyor belt. The stop shaft is located below the carton and in a special position, offset from the vertical center axis of the carton and behind the moving direction of the second conveyor belt. During operation, the carton is conveyed by the first conveyor belt and comes into contact with the stop shaft. The bottom is obstructed, and the top flips 90° around the stop shaft due to inertia and falls into the second conveyor belt. This device solves the problems of complex structure, high cost, easy damage to the carton, and unstable flipping of traditional flipping devices. Flipping is achieved through a simple mechanical structure, reducing cost and maintenance difficulty; the special position of the stop shaft and the soft rubber cover reduce damage to the carton; the design of the limiting plate and rotating stop shaft ensures smooth and accurate flipping. The conveyor belts are made of soft plastic belts, and the upper belt is supported by soft rubber tubes, further improving the stability and service life of the device, effectively improving the efficiency of the packaging production line and product quality.

This utility model discloses a palletizer gripper structure. It includes: a pneumatic lifting mechanism, comprising a lifting cylinder located at the center and a support guide column vertically surrounding the outside of the lifting cylinder; a piston rod extending vertically within the lifting cylinder, with a base connected below the piston rod, and a vacuum sponge suction cup for adsorbing cartons mounted on the lower end face of the base; symmetrical auxiliary gripping mechanisms on both sides of the base, each auxiliary gripping mechanism including an auxiliary gripping cylinder fixedly connected to the base, a telescopic rod located within the auxiliary gripping cylinder, and a gripping plate connected to the end of the telescopic rod, the middle of the gripping plate being connected to both sides of the base via a hinge. The advantages are: the composite gripping scheme utilizes vacuum adsorption to adapt to the irregular top surface of the packaging box, while providing reliable anti-fall protection through mechanical gripping, greatly improving the stability and reliability of the gripping and palletizing process.

This utility model discloses a pipe reaming device, including a support platform, a reaming mechanism, a clamping module, a clamping module, and a limiting module. The reaming mechanism, clamping module, and clamping module are all fixedly connected to the support platform. The clamping module and limiting module are located on one side of the clamping module, and the reaming mechanism is located on the other side. The limiting module is detachably fixed to the support platform. The clamping module can tighten / loosen. The reaming mechanism is equipped with a reaming head. When the clamping module tightens, it forms a cylindrical through hole. The reaming head faces the through hole of the clamping module. The reaming mechanism's movement allows the reaming head to move back and forth along the axis of the through hole. This utility model keeps the pipe horizontal, prevents pipe deviation, ensures a smooth and precise reaming process, facilitates single-person operation, saves labor, improves work efficiency, and increases the pass rate.

The utility model discloses a kind of scaling coal powder cleaning devices on conveying belt, belong to scaling coal powder cleaning technical field, including rack, grinding mechanism, dust removal mechanism, driving mechanism and belt reversing mechanism;Grinding mechanism includes support wheel and grinding wheel, support wheel and rack rotation connection, grinding wheel is coaxially fixed in the outer ring of support wheel, grinding wheel includes grinding wheel outer frame, grinding wheel inner frame and grinding layer, grinding wheel outer frame and grinding wheel inner frame are coaxially arranged and elastically connected, and grinding layer is arranged in the outer layer of grinding wheel outer frame.The utility model realizes the effective cleaning and collection processing of scaling coal powder on conveying belt by the cooperation of grinding mechanism, driving mechanism, dust removal mechanism and belt reversing mechanism, without shutdown maintenance.

The utility model relates to a gantry crane engine cable one-way locking device, and belongs to the technical field of cable locking. The device comprises a fixing plate arranged on the gantry crane, two sets of locking plates rotationally arranged on the fixing plate and a locking elastic piece connected with the locking plates and the fixing plate, a locking gap for arranging a cable is formed between the two sets of locking plates, and the cable abuts against the two sets of locking plates. The cable is provided with a reserved section between the gantry crane and the engine, the locking elastic piece is located on the side, facing the reserved section, of the locking plate, the locking elastic piece enables the locking plate to have the trend of rotating away from the reserved section, and when the cable is subjected to the tension of the reserved section, the cable drives the locking plate to rotate, so that the locking gap is gradually reduced. The application has the effect of reducing potential safety hazards caused by cable elongation.

The utility model provides a kind of neck ring belongs to neck ring technical field.It solves the problem of poor wearing comfort of existing neck ring.The neck ring, including two using flexible material and having accommodating cavity's capsule and using hard material's inner joint and outer joint, the interface of tubularity is had in the one end of capsule, the interface of two capsules is inserted respectively in the two ends of inner joint and is fixedly connected with interface, and outer joint is covered in the outside of two interfaces and is fixedly connected with two interfaces.The utility model structure is simple, and design is ingenious, and the capsule of two sides is connected by hard inner joint and outer joint cooperation, and two capsules form excessive extrusion to the two sides of neck when not wearing, so that wearer feels more comfortable.

The utility model discloses a suction and hanging dual-purpose lamp convenient to install, relates to the technical field of lighting equipment, and aims to solve the problems that a hanging wire is often twisted and knotted and the installation becomes complicated when a wire is manually taken up in an existing device. The suction and hanging dual-purpose lamp comprises a light-emitting component and a lampshade fixedly connected to the top end of the light-emitting component; the main magnetic attraction piece is arranged at the top end of the lampshade, and the main magnetic attraction piece is used for attracting the dual-purpose lamp on a wall surface; the abutting plates are arranged at the top end of the lampshade. Two rectangular holes are formed in the top end of the lampshade, and the bottom ends of the dustproof boxes are fixedly connected to the top ends of the rectangular holes; and the two clockwise-winding take-up assemblies are both arranged in the dustproof box. The sucking and hanging dual-purpose lamp convenient to install has the technical effects that the hanging wire can return to a storage position in order through clockwise winding and winding, the problems of disordered winding and wire clamping possibly caused by manual wire winding are avoided, distortion, knotting and excessive extrusion during winding of the hanging wire are completely eradicated, the installation is convenient, and the service life of the hanging wire is prolonged.

The application discloses a soil in-situ sampling device suitable for multiple landform conditions and relates to the technical field of soil sampling. The sampling installation piece is provided with a moisture retaining and sealing piece outside; the moisture retaining and sealing piece is provided with a stop control piece; the stop control piece is used for preventing sample failure; the sampling installation piece is provided with an overpressure protection piece; the overpressure protection piece is connected with the sampling installation piece and the stop control piece in series; the stop control piece can be used for facilitating sealing and moisture retaining work after sampling is completed, avoiding water loss and affecting subsequent detection accuracy; meanwhile, the moisture retaining and sealing piece is used in cooperation with the stop control piece to automatically limit the sealing and moisture retaining work of workers after soil sampling is completed; otherwise, the protective cover cannot be installed on the sampling connecting ring to perform sealing work; the soil in-situ sampling device suitable for multiple landform conditions is not convenient for standardizing sample sealing and moisture retaining time limit and cannot prevent samples from being excessively pressed.

The utility model discloses an adjustable cable drawing device which comprises a U-shaped frame, a transverse plate is fixedly connected to the interior of the U-shaped frame, an equipment frame is fixedly connected to the top of the transverse plate, a motor is fixedly connected to the interior of the equipment frame, and a reciprocating lead screw is fixedly connected to the bottom of an output shaft of the motor. A supporting plate is fixedly connected into the U-shaped frame, the outer wall of the reciprocating lead screw is sleeved with a vertical sleeve in a threaded mode, and the outer wall of the vertical sleeve is fixedly sleeved with a lifting plate. By means of the wiping sleeve structure with the adjustable interval, efficient cleaning of wires with different diameters is achieved, and the problem that cleaning is not thorough or excessive extrusion is caused by the fixed interval design is solved; a reciprocating lifting mechanism driven by a motor is adopted, so that the wiping sleeve can move up and down, and the dynamic cleaning effect on the surface of the wire is enhanced; meanwhile, through the design of the quick-release end cover, the wiping sleeve can be conveniently and quickly replaced, and the maintenance efficiency is improved.

The invention relates to the technical field of manufacturing of organic fertilizers and microbial fertilizers, in particular to a high-tower pelletizer for preparing small-particle compound fertilizers for greening, which comprises a tower body and a spraying structure arranged at the top end of the tower body, and the spraying structure comprises a mounting frame arranged at the top end of the tower body, the mounting frame comprises a first disc body fixed at the top end of the tower body and a second disc body fixed below the first disc body through a plurality of connecting arms; the cylinder is rotationally installed on the second disc body, the conical barrel is fixed to the cylinder, a plurality of spray holes are formed in the conical barrel, and a filter disc used for filtering agglomerated raw materials is further fixedly arranged in the cylinder; in the working process, agglomerated raw materials are driven through rotation of the multiple scrapers, so that the agglomerated raw materials enter the material pressing mechanism to be subjected to cluster breaking treatment, the situation that as the working time is prolonged, too many agglomerated raw materials are accumulated on the filter disc, the flux of the filter disc is reduced, and then raw materials in the conical barrel are unbalanced is prevented, and the production quality is effectively guaranteed.

The invention relates to the technical field of thermal power generating unit equipment monitoring, and discloses a thermal power generating unit measuring point abnormity discriminating and early warning device which comprises a connecting pipe, a control assembly and a trigger assembly, a plurality of arc-shaped plates in the control assembly are annularly distributed around the connecting pipe, and a limiting seat at the tail end of an arc-shaped rod slides in a hollow cavity. The arc-shaped plate can be opened and closed cooperatively along with thermal expansion and cold contraction of the connecting pipe to release thermal stress; the deformation chamber of the inner side sealing sleeve is subjected to self-adaptive deformation along with the movement of the arc-shaped plate to form dynamic sealing; the outer side push plate is connected with the supporting spring through the push rod and the sliding seat, the arc-shaped plate is pushed to tighten the sealing sleeve with proper elastic force in a normal state, and excessive extrusion is avoided. The triggering assembly achieves intelligent pressure regulation and control, the nitrogen bag expands or contracts along with temperature changes, the moving disc and the feeler lever are pushed to press the moving plate, thrust is reduced at the high temperature to avoid excessive extrusion of the sealing sleeve, thrust is recovered at the low temperature to guarantee sealing, temperature difference changes are accurately adapted, and all the assemblies cooperate to improve monitoring reliability.

This utility model discloses a precision parts sorting and packaging device, specifically relating to the field of parts sorting technology. It includes a support assembly, a movable assembly installed within the inner cavity of the support assembly, a limiting assembly installed near the center of the support assembly, a sorting assembly installed near the center of the limiting assembly, and a discharge assembly installed near the center of the support assembly. This precision parts sorting and packaging device, through its designed sorting and discharge assemblies, achieves rapid sorting, adapting to the needs of batch sorting of precision parts. It increases the number of sorting operations per unit time, ensuring overall process efficiency. Furthermore, the cylinder thrust can be precisely controlled by adjusting the air source pressure, allowing for the setting of appropriate thrust based on the part material and structural strength transmitted by sensors. This avoids deformation, breakage, or surface damage to parts due to excessive thrust, reducing the impact of impact vibration on precision parts.

The utility model discloses a kind of embedding boxes for congenital megacolon specimen, it is related to the field of tissue embedding technology.It includes box body with filter hole, circular ring, tight knob column, helical segmentation strip and box cover.Circular ring is fixed along inside of side plate, helical segmentation strip is coiled in spiral, one end is connected with the tight knob column of center, the other end is fixed in circular ring, can adjust interval with knob column rotation to hold or release specimen.Tight knob column contains shaft sleeve, shaft cap and split type knob spoon, through hexagonal structure cooperation and the bistable clamping of arc spring and clamping groove, the clutch and stable rotation of knob spoon and shaft cap are realized, control helical strip tightness.Box body, circular ring, helical strip etc.are provided with round hole to ensure reagent penetration, box cover buckle sealing, label area is provided in front.The design realizes specimen integration fixation, maintains morphological continuity, simplifies material taking, embedding process, improves pathological diagnosis efficiency and accuracy.

This application discloses an engine shock absorber bracket press-fitting device, belonging to the field of automotive parts assembly technology. It includes an upper and lower template connected to a press. An upper mounting seat is provided on the bottom surface of the upper template, and rotating pressure head assemblies are provided on both sides of the upper mounting seat. The rotating pressure head assemblies press the housing onto the upper mounting seat. The top surface of the lower template is provided with a lower mounting seat, a slider, and a slide rail. The slider is connected to a power cylinder and is movably mounted on the slide rail. A positioning post is installed on the top surface of the slider. The main spring is placed on the lower mounting seat, and the positioning post passes through the main spring. The power cylinder moves the positioning post to compress the main spring. The press drives the upper template to press down, pressing the housing onto the main spring. Pre-compression of the main spring before pressing the housing avoids wear on the rubber parts of the main spring caused by direct pressing, thus improving the press-fitting quality and production efficiency of the engine shock absorber bracket.

The application relates to the elevator technical field and discloses a stable elevator self-balancing device, which comprises a car and guide rails, fixed blocks are arranged on the two sides of the upper and lower ends of the car, mounting plates are fixedly connected to the front and back parts of the fixed blocks, mounting grooves are arranged on the side of the mounting plates close to the guide rails, springs are fixedly connected to the middle parts in the mounting grooves, a first mounting seat is fixedly connected to one side of the spring, a first guide wheel is rotatably installed on the side, away from the inner wall of the mounting groove, of the first mounting seat, through the first guide wheel, the first mounting seat and the spring and other structures, when the weight of the car is not uniform in the front and back directions, the adjustable gap is utilized, the first guide wheel is extruded by the car, the spring is contracted, the first guide wheel is prevented from being excessively extruded, the second guide wheels located on the upper and lower parts of the first guide wheel are in contact with the guide rails, the two second guide wheels assist the first guide wheel in supporting the car, the balance of the car is ensured, and the accelerated damage of the first guide wheel is avoided.

This utility model provides a multifunctional cake layering and demolding device, relating to the field of food manufacturing technology. It includes a placement board with a top ejector port at the center of its top. A turntable is mounted outside the top ejector port, driven by a motor. A cake mold is placed on top of the turntable. Side plates are engaged on both sides of the top of the placement board, and telescopic controllers are installed in the center of each side plate. Telescopic controllers are connected to telescopic cylinder assemblies at their ends, and sliding plates are engaged at the ends of the cylinder assemblies. Through the height adjustment design of the sliding plates and sliding sleeves, the device can precisely adapt to the height differences of multiple cake layers. Combined with the top ejector plate, it smoothly lifts the cake, ensuring each layer is independently separated and preventing layer adhesion or surface damage. Compared to traditional methods of simply pushing out or tapping the cake, this device effectively solves the problem of cake structural damage during demolding, ensuring the integrity and aesthetics of the finished product. It is particularly suitable for the needs of professional baking and mass production.

This utility model discloses an automotive oil pipe with a high pressure resistance structure, relating to the field of automotive oil pipe technology. It includes a support pipe and an outer corrugated pipe. The outer corrugated pipe is adhered to the outside of the inner support pipe, and the outer corrugated pipe has an internal fitting groove. An integrally formed support strip is provided on the outside of the inner support pipe. This automotive oil pipe with a high pressure resistance structure uses cross-arranged support strips and a return spring to fill the space between the inner support pipe and the outer corrugated pipe, providing good support and high resilience, thus achieving the purpose of high pressure resistance for the automotive oil pipe. Furthermore, the outer corrugated pipe is provided with an anti-compression ring, reinforcing ribs, and connecting rings for deformation resistance, further enhancing the pressure resistance of the automotive oil pipe. This high pressure resistance structure solves the problem that existing automotive corrugated oil pipes generally rely on the corrugated structure of the pipe itself for overall structural support, resulting in poor support.

This invention belongs to the technical field of robot teaching and data acquisition. It discloses a multimodal robot teaching data acquisition system. The teaching device includes an operator input end, an end effector gripper, and a force transmission and feedback mechanism connected sequentially. A tactile sensor is embedded in the force transmission path of the end effector gripper for real-time acquisition of tactile information. A data processing module adjusts the damping parameters of the force transmission and feedback mechanism based on the contact state corresponding to the tactile information acquired by the tactile sensor and the local physical properties of the target object grasped by the end effector gripper. A data generation module performs unified data processing on the operator's input information, the end effector gripper's pose information, the acquired tactile information, and visual data after the damping parameters are adjusted to generate a multimodal robot teaching dataset. This invention achieves impedance adjustment for tactile drive, enabling the system to adapt to various contact states and improving data acquisition quality.

The utility model relates to the technical field of agricultural planting, and disclose a kind of water and fertilizer integration irrigation device for Xanthoceras sorbifolia bunge planting, the inside of the box is provided with rotating rod, the outer surface of rotating rod is coaxially spaced apart with stirring rod, one end of stirring rod is fixedly connected with the outer surface of rotating rod, the other end of stirring rod extends to the direction away from rotating rod axle center, the inside of rotating rod movably is sleeved with the adjusting rod that is penetrated in the both ends of rotating rod, the lower end of adjusting rod is fixedly connected with obturator, by the cooperation between the structure such as operation round plate, adjusting screw, rectangular sleeve, adjusting rod and obturator, the flow of discharge port is adjusted, to effectively avoid the excessive extrusion of hose, avoid the situation that hose is damaged, avoid the situation that material leaks, improve the security and service life of device, simple operation, higher practicality.

The utility model provides a kind of multistage grinding head assembly for composite resin tooth surface polishing, it is related to resin tooth polishing grinding field, including bottom plate, the upper surface of bottom plate is fixedly connected with symmetrical support plate, the upper surface of support plate is fixedly connected with positioning frame, the inside wall of positioning frame is opened with symmetrical sliding slot, the inside of two sliding slots is slidably connected with grinding mechanism, grinding mechanism includes slide, the upper surface of slide is opened with through-hole, the upper surface of slide is installed with air cylinder, the output of air cylinder is fixedly connected with connecting seat, the bottom surface of connecting seat is installed with grinding motor, the output of grinding motor is installed with connecting plate.The utility model utilizes the cooperation of grinding motor, primary grinding wheel, secondary grinding wheel and tertiary grinding wheel, can carry out multistage grinding to composite resin tooth, conveniently adjust the precision of composite resin tooth polishing, improve the efficiency of composite resin tooth surface polishing.

The utility model belongs to the technical field of battery pack charging, and particularly relates to a battery pack charging device, which comprises a base, a power supply is arranged on the outer wall of the base, a battery pack body is arranged above the base, a jack is arranged on the battery pack body, and a driving device is arranged on the base. According to the battery pack charging device, the battery pack can be automatically driven to move towards the power supply only by placing the battery pack body on the placing plate and starting the motor, the butt joint of the charging head and the jack of the battery pack is accurately realized, the charging operation is completed, the charging process is greatly simplified, and the operation convenience is improved; a sliding plate, a pull rod, a limiting rod and other parts in the device cooperatively operate, limiting of a second gear sleeve is relieved in time, a first gear sleeve and the second gear sleeve are ingeniously matched, dynamic changes of coincidence and disengagement occur, the first gear sleeve idles, and the situation that a placing plate drives a battery pack body to excessively extrude a charging head is effectively avoided.

This utility model discloses an air conditioning pipe expansion joint clamping block, including a lower clamping block and an upper clamping block. A bracket is fixedly installed in the middle of the lower outer surface of the lower clamping block. Semi-circular pipe limiting grooves are formed between the left and right ends of the upper outer surface of the lower clamping block and the left and right ends of the lower outer surface of the upper clamping block. A semi-circular rubber block is adhered in the semi-circular pipe limiting groove. A snap-fit ​​component is fixedly installed in the middle of the upper outer surface of the lower clamping block. The air conditioning pipe expansion joint clamping block of this utility model utilizes the expansion of the semi-circular rubber block under pressure to compress the pipe, improving stability, resisting vibration during air conditioning operation, and preventing pipe loosening. The snap-fit ​​component facilitates quick assembly and disassembly between the upper and lower clamping blocks.

The utility model discloses a reinforced silica gel gasket. The reinforced silica gel gasket comprises a gasket body, a through hole, a plug and a reinforced structure, the fixing block and the pressing block are fixed inside the outer sleeve, so that the gasket body is supported, a good supporting effect is achieved when the gasket body is pressed, the problem that the gasket body is prone to being torn due to excessive extrusion is avoided, the gasket body can push and press the filling silicon body when the gasket body is installed and pressed, then the pressing block pushes and presses the filling silicon body, and the gasket body is prevented from being damaged. Due to the fact that the filling silicon body can push and press the pressing block, the through hole of the gasket body shrinks, the through hole is pressed on the surface of the mechanical part, and the sealing performance of the reinforcing and mechanical part is achieved.