244results about How to "Distribute pressure" patented technology

The invention belongs to the technical field of circuit board production, and discloses a flexible printed circuit board multilayer alignment press-fit device, which comprises a press-fit assembly, the press-fit assembly comprises a mounting seat, a top boss of the mounting seat is fixedly connected with an electric sliding rail, a slidable sliding part is fixedly mounted in the electric sliding rail, and the electric sliding rail is fixedly connected with a bottom boss of the mounting seat. Two limiting plates are fixedly connected to the top of each mounting base, the pressing assembly further comprises a plurality of guide plates, the guide plates are mounted at the tops of the mounting bases, the mounting assembly is mounted at the top of the sliding part, and the mounting assembly comprises a pressing table; the pressing table is moved through the electric sliding rail, rapid feeding and discharging are achieved in cooperation with interaction of the telescopic plate and the guide wheel, and before pressing, the telescopic plate ascends along the guide plate to support the pressing table and materials to the position below the pressing plate; after pressing, the telescopic plate descends along the other side of the guide plate, the pressing table continues to move, the telescopic plate retracts under the guidance of the limiting plate, the bottom of the pressing table makes contact with the sliding part, rapid and stable feeding and discharging of the circuit board are achieved, and the production capacity is improved.

The utility model relates to the technical field of ultrasonic flow meters, in particular to an ultrasonic flow meter fixing clamp capable of being quickly disassembled and assembled. The technical problems that an existing ultrasonic flow meter usually needs to be inserted into a pipeline to detect the water flow of the pipeline, due to the fact that water flow in the pipeline has certain impact force, and the flow meter is lack of a certain supporting structure, the ultrasonic flow meter shakes in the detection process, accurate measurement of ultrasonic signals is affected, and the detection precision is reduced are solved. According to the technical scheme, the ultrasonic flowmeter fixing clamp capable of being rapidly disassembled and assembled comprises an ultrasonic flowmeter, a butt joint assembly, a positioning assembly and an auxiliary assembly; the sleeve rods are connected with the telescopic rods, telescopic adjustment is carried out according to the height distance between the flowmeter and the pipeline, the requirements for different installation heights are met, and it is ensured that the installation position of the flowmeter is accurate, and two sets of sleeve plates are combined with suction cups to be attached to the outer wall of the pipeline for positioning after the flowmeter is in butt joint with the pipeline; and stable connection between the flowmeter and the pipeline is ensured.

The invention provides an auxiliary device for joint nursing of old people, which comprises a pair of support crutch structures arranged oppositely and used for providing upper body support; the knee assisting device is connected with the hinge structure and used for assisting knee joints; the hinge structure is connected between the supporting crutch structure and the knee assisting device and comprises a first hinge plate and a second hinge plate, one end of the first hinge plate is hinged to the supporting crutch structure, one end of the second hinge plate is hinged to the end, away from the supporting crutch structure, of the first hinge plate, and the other end of the second hinge plate is hinged to the knee assisting device. The supporting crutch structure and the knee assisting device are integrally designed through a hinge structure, the stability of a user in the walking process is enhanced, and the risk of falling down is reduced. Meanwhile, the supporting crutch structure stably supports the upper body of the old person, the pressure of the upper body on knee joints is reduced, the burden of the knee joints, hip joints and other joints in the actions of walking, standing, sitting down and the like is effectively relieved by providing stable support for the old person, and joint pain and discomfort are prevented and relieved.

The utility model discloses an energy-absorbing pressure-resistant top beam of a top coal caving hydraulic support. The energy-absorbing pressure-resistant top beam comprises a top beam main body, a lifting plate and a pressure-resistant unloading assembly, the top beam main body has corresponding supporting force and is used for supporting a top plate; sinking grooves are formed in the supporting working face and used for containing corresponding parts; the lifting plate is erected above the sinking groove through the pressure-resistant unloading assembly, and an extrusion strip is arranged at the top end of the lifting plate to carry out corresponding support extrusion operation; the compression-resistant force unloading assembly comprises a deformation energy absorption part which is arranged in the sinking groove and located below the lifting plate, a supporting plate is assembled at the top end of the deformation energy absorption part and has corresponding supporting force, and the lifting plate is erected above the supporting plate through a lifting supporting column; the movable supporting blocks are fixedly connected and supported at the two ends of the bottom of the deformation energy-absorbing piece, balls are arranged at the bottom of the movable supporting blocks, and when the deformation energy-absorbing piece is stressed and deforms, the movable supporting blocks move in the frame moving direction in the sinking groove; the supporting springs are arranged between the movable supporting blocks and the corresponding inner walls of the sinking grooves in the frame moving direction, self-adaptive deformation is carried out when the movable supporting blocks move, a top coal seam top plate is stably supported, large and hard coal briquettes can be crushed through extrusion, and the situation that the large coal briquettes fall off to crush the top beam is prevented.

The utility model discloses a strong magnetic force button relates to button technical field, including female buckle and sub button, is equipped with the mounting groove on female buckle, and the strong magnet is bonded in the mounting groove, and is equipped with iron quality protruding on sub button, and iron quality protruding inserts the strong magnet in mounting groove and will iron quality protruding adsorb fixed, and is equipped with V type folding plate on female buckle and sub button, and V type folding plate is used for installing female buckle and sub button at the bag mouth of suitcase, can cooperate with the pincers pressure technology through setting V type folding plate, realizes quick installation, and eliminates the insufficient place of the seam line and riveting technology, and the hardness of V type folding plate is improved through setting the metal ceramic wear -resisting layer, avoids the scratch and the corrosion, can disperse the pincern pressure through setting temporary flexible high polymer protection film, and the indentation is left in flexible high polymer protection film, and there is no residue after peeling, avoids the indentation and leaves on V type folding plate.

The utility model discloses a support pipe fitting for preventing a vertical pipeline of a fire fighting water system from falling. The support pipe fitting comprises a base on the lower half portion and a support on the upper half portion. The base is fixed on a floor for supporting; the support pipe fitting is composed of a round iron plate, a protection reinforcing pipe and an original pipe, the protection reinforcing pipe and the original pipe penetrate through the round iron plate, the round iron plate makes contact with the base through a rubber plate for telescopic damping, groove connecting openings or screw thread connecting openings are formed in the upper end opening and the lower end opening of the original pipe, and the lower end opening of the original pipe extends out of a sleeve in a floor to be connected with a fire fighting water system. Four pieces of triangular reinforcing iron are connected between the protective reinforcing tube and the circular iron plate in a surrounding manner; and a gap between the original pipe of the bracket pipe fitting and the sleeve is filled with a fireproof material. The utility model has the beneficial effects that: 1, the problems of potential safety hazard and inconvenience in maintenance caused by falling of the vertical pipeline of the fire-fighting water system are solved; and 2, the pressure of the gravity of the vertical pipeline on the lowermost hoop pipe fitting can be effectively dispersed, so that safety accidents are effectively prevented.

The invention relates to the technical field of bicycle accessories, in particular to a novel bicycle seat bundle quick-release locking structure which comprises a U-shaped quick-release handle, a C-shaped seat bundle, a displacement rotating block, a fixed rotating block, a fixed pin, a plane gasket, a counter-locking screw female nail and a counter-locking screw male nail. A C-shaped seat bundle is arranged on the inner side of the U-shaped quick release handle, a displacement rotating block is arranged on the inner side of the C-shaped seat bundle, a fixed rotating block is arranged on the inner side of the displacement rotating block, a fixed pin is arranged on the inner side of the displacement rotating block, a counter-locking screw female nail is arranged on the inner side of the U-shaped quick release handle, and a counter-locking screw male nail is arranged on the inner side of the U-shaped quick release handle. A plane gasket is arranged on the outer side of the counter-locking nut; according to the invention, the shifting rotating block and the fixed rotating block are connected through the fixing pin, the fixed rotating block is connected with the C-shaped seat bundle, the shifting rotating block is connected with the U-shaped quick release handle, and the locking screw is used for connection, so that the bicycle seat bundle can be quickly disassembled and locked.

The utility model discloses an anti-abrasion hexagon nut which comprises a nut body, six straight faces are arranged outside the nut body in a hexagonal mode, the nut body is provided with six round corners, a round corner is arranged at the connecting position of every two adjacent straight faces of the nut, and an inserting groove is formed in the middle of each straight face of the nut body. A screw hole is formed in the nut body. According to the anti-abrasion hexagon nut, the inserting grooves are formed in the middle of each straight face, corresponding tools such as a special wrench can be inserted into the inserting grooves for screwing when the nut is damaged, various mounting and dismounting modes are provided through the design, and therefore a user can still use a standby tool to complete dismounting operation even under the extreme condition; and the practicability and the flexibility of the nut are improved.

The utility model provides a smoke dust measuring device, which relates to the technical field of smoke dust measurement and comprises a separating mechanism, the separating mechanism comprises a detection box, a supporting mechanism is arranged at the bottom of the detection box, an observation window is arranged on the inner wall of a clamping groove formed in one side of the detection box, and a base is arranged at the top of the detection box. According to the utility model, the water vapor in the smoke dust is separated through the installed separation mechanism, so that the mixing of smoke dust particles and the water vapor can be effectively reduced, the smoke dust measurement accuracy is improved, and the existence of the water vapor possibly influences the concentration and distribution of the smoke dust, so that the content of the smoke dust can be more accurately detected after the water vapor is separated; the water vapor in the smoke dust is separated, so that the corrosion and damage to the detection equipment can be reduced, the service life of the equipment is prolonged, the water vapor possibly contains corrosive substances, the detection equipment can be damaged if the water vapor is not separated, and the detection equipment can be effectively protected by separating the water vapor.

The utility model relates to the technical field of mooncake conveying equipment, in particular to an anti-collision type multi-station rotary table conveying device for mooncake packaging, which comprises a rotary table. A driving mechanism for driving the turntable to rotate is arranged at the bottom of the turntable; a plurality of moon cake positioning mechanisms are arranged on the turntable at equal angles, and a conveying mechanism is arranged beside the turntable; the conveying mechanism comprises a supporting frame. A conveying belt is arranged on the supporting frame, and a plurality of spacing frames are arranged on the conveying belt at equal intervals; when the moon cakes fall off from the rotary table, the moon cakes can fall into the spacing frames on the conveying belt; the four inner edges of the spacing frame are polished, and the four inner edges of the spacing frame are wrapped with elastic materials. According to the mooncake conveying device, collision and damage of mooncakes in the conveying process are effectively avoided, and the integrity and packaging quality of the mooncakes are improved.

The utility model relates to a comfortable office chair and belongs to the technical field of office chairs. A comfortable office chair comprises chair legs with a base and a plurality of forked parts, a gas spring supporting column arranged based on the base, a swivel chair tray arranged based on the gas spring supporting column, a chair seat and a backrest, and further comprises a back-through bearing body arranged based on the swivel chair tray, the through-back bearing body comprises a bearing body provided with a chair seat bearing part and a backrest bearing part, and a chair seat supporting body arranged based on the bearing body; and the chair seat is arranged on the basis of the chair seat supporting body. According to the utility model, the comprehensive performance of high stability, high fitting degree and long service life is realized through structural innovation, the seat cushion is suitable for sedentariness scenes such as offices and meetings, and the user experience is remarkably improved.

The invention discloses a precise fixing device for an embedded box of a residential building wall, and relates to the technical field of building equipment, the precise fixing device comprises an embedded box main body, the embedded box main body is embedded in a reinforcing steel bar, two first pressing plates are symmetrically arranged at the top of the embedded box main body, and arc-shaped grooves are formed in the opposite sides of the two first pressing plates; the two sides of the second pressing plate are inserted into the arc-shaped grooves in a sliding mode to form a complete pressing plate; the through holes penetrate through the first pressing plate and the second pressing plate along the notch edge of the arc-shaped groove; according to the embedded box body, after concrete is poured, the concrete extrudes the first pressing plate or the second pressing plate to enable the first pressing plate and the second pressing plate to move downwards together, then the penetrating hole is shrunk, the embedded box body is welded in the steel bar reserved space, the steel bars are clamped through the penetrating hole, the supporting strength is enhanced, and the pressure of the concrete is converted into extrusion force through the pressing plates to be transmitted to the steel bars; pressure on the embedded box body is dispersed, the top flatness is guaranteed, deformation caused by excessive local pressure is avoided, and the embedded box is tightly connected with the steel bars.

The utility model relates to the field of steering rollers, and discloses a length-adjustable steering rubber roller which comprises a connecting rod assembly, flanges are connected to the left end and the right end of the connecting rod assembly in a sliding mode, a plurality of rubber roller assemblies are connected to the outer portion of the connecting rod assembly in a sliding mode, and two thrust fixing spring shells are fixedly connected to the interiors of the flanges. And a limiting block is slidably connected into the thrust fixing spring shell, a thrust spring is fixedly connected to the bottom end of the limiting block, and a mounting block is fixedly connected to the top end of the limiting block. According to the adjustable steering rubber roller, through the structures such as the limiting ring, the thrust spring and the mounting column, the thrust spring pushes the limiting ring to move upwards, the limiting ring drives the pull block to be clamped in the sliding groove, the adjustable steering rubber roller enables a production line or a conveying system to have higher flexibility, and the adjustable steering rubber roller can adapt to objects of different sizes, shapes or weights according to needs; therefore, different production requirements are met.

The utility model provides a rope climbing auxiliary enhanced emergency rescue boot which comprises a shoe sole and a boot body connected with the shoe sole, the boot body comprises a left upper face, a right upper face and a boot face which are connected with the shoe sole, the front end of the boot face is connected with a toe cap, the toe cap is connected with the shoe sole, the left upper face and the right upper face are connected with a boot leg, and a heel protection plate is arranged on the rear side of the boot leg. A plurality of protrusions are transversely arranged on the left upper face and the right upper face. A plurality of protrusions are transversely arranged on the left upper face and the right upper face. The protrusions can increase the contact area between the vamp and other objects, so that pressure is dispersed, and abrasion of the vamp is reduced. Meanwhile, the protrusions can play a role in skid resistance, and the wear resistance of the rope climbing auxiliary enhanced emergency rescue boot in the complex environment and in the rope climbing process is improved.

The invention discloses a water-swelling elastic plugging agent for a water-based drilling fluid and a preparation method of the water-swelling elastic plugging agent. The water-swelling elastic plugging agent comprises the following components in parts by weight: 100 parts of a polyolefin elastomer matrix material; 15 to 20 parts of a reinforced matrix material; 0.8 to 1.5 parts of a polyolefin elastomer matrix material cross-linking agent; 8 parts to 15 parts of a reinforcing agent A; 20 to 30 parts of a reinforcing agent B; 15 to 30 parts of super absorbent resin; 15 to 20 parts of a plasticizer; 0.2 to 0.8 part of an isolating agent; 0.5 to 1 part of an anti-aging agent; the plugging agent provided by the invention is simple in preparation process, not only is beneficial to industrial production, but also is convenient to prepare plugging slurry on site, can achieve a good plugging effect, and provides an effective technical means for well leakage treatment.

The utility model discloses a paper roll fixing device for a printing factory, and relates to the technical field of paper roll fixing. The device comprises a bottom frame, two sliding groove plates are fixedly connected to the top of the bottom frame, two sliding grooves are formed in the bottom frame, and supporting assemblies are arranged in the two sliding grooves; the sliding frame comprises a bottom frame located above the bottom frame, the bottom of the bottom frame is fixedly connected with two sliding rails slidably connected into the two sliding groove plates respectively, the edge of one side of the top of the bottom frame is fixedly connected with a fixing frame, the top of the fixing frame is fixedly connected with a soft plate, and the back face of the soft plate is provided with a radian adjusting assembly. The distance adjusting assembly comprises two mounting bases fixedly connected to the top of the bottom frame, a two-way screw is rotationally connected into the two mounting bases, and first hand wheels are fixedly connected to the two ends of the two-way screw. By adjusting the distance between the two bottom frames and the radian of the soft plate, a paper roll is fixed more stably, pressure can be dispersed, and indentations on the surface of the paper roll are reduced.

The utility model discloses a sanitation truck garbage can supporting frame convenient to disassemble, and relates to the technical field of garbage can supporting frames, the sanitation truck garbage can supporting frame convenient to disassemble comprises a supporting frame body, a base support is fixedly installed at the lower end of the supporting frame body, a lifting rope is arranged on the supporting frame body, and a lifting garbage can is arranged at the lower end of the lifting rope. The lifting garbage can is installed on the supporting frame body in a sliding mode, a connecting rod is arranged on the supporting frame body, and during installation, only the side end of the base support needs to be inserted into the bottom of a garbage compartment, then the clamping block is clamped to the upper end of the garbage compartment, and installation can be rapidly completed; during disassembly, the adjusting screw rod is rotated to enable the clamping block to ascend to be separated from clamping, then the U-shaped frame is slid to enable the ground cushion block to make contact with the ground, and finally the base support is pulled out, the whole disassembly process is easy and convenient to operate, and by means of the convenient and fast assembly and disassembly mode, in environmental sanitation work, replacement of the faulted supporting frame or flexible adaptation according to different garbage trucks is achieved.

The utility model provides an assembled paper guide rope wheel device, and belongs to the technical field of paper guide rope wheels. Comprising a rope wheel body; the two rotating shafts are arranged on the left side and the right side of the rope wheel body; the two rotating plates are arranged on the outer side of the rotating shaft, and the rotating plates are cylindrical; the fixed plate is arranged on the outer side of the rotating plate; the two first insertion holes are formed in the rotating plate; and the two second insertion holes are formed in the rotating shaft. By arranging the fixing part and adopting a mechanism capable of being rapidly disassembled and reset, the paper guide rope can be replaced more rapidly, the downtime is shortened, the complexity of maintenance operation is reduced, meanwhile, due to the concave-convex texture design on the surface of the rope wheel body, the friction force between the paper guide rope and the rope wheel is increased, and the service life of the rope wheel is prolonged. The traction efficiency is improved, pressure can be dispersed, and local abrasion is reduced.

The application discloses a clothes treating apparatus, which comprises a cabinet, a drum assembly and a damping assembly. The cabinet comprises a base, the drum assembly is above the base and comprises an inner drum, and the damping assembly is between the base and the drum assembly and comprises arc-shaped beams. The arc-shaped beams are all convex to the drum assembly, and are configured to reduce the convex height under the pressure of the drum assembly when supporting the drum assembly. The convex heights of the arc-shaped beams are all different, and the stiffness of the arc-shaped beams increases in turn according to the order of the convex heights from high to low. The end of each arc-shaped beam is movably arranged on the base. The arc-shaped beams are configured to: when the inner drum is in a static state, the top of at least one arc-shaped beam is in supporting contact with the drum assembly; and when the inner drum rotates relative to the cabinet, the arc-shaped beams are in supporting contact with the drum assembly in turn according to the order of the convex heights from high to low. The damping assembly is beneficial to avoiding that the drum assembly drives the cabinet to vibrate due to excessive vibration, and is beneficial to avoiding noise.

The utility model discloses a stabilizing assembly for improving a composite cable manufacturing structure, which belongs to the field of cable processing equipment and is characterized in that a stranding cage main shaft is arranged above a seat body, a front riding wheel winch and a rear riding wheel winch which are axially distributed are arranged on the outer wall of the stranding cage main shaft, a supporting riding wheel is arranged at the top of the seat body, and the front riding wheel winch and the rear riding wheel winch are arranged on the top of the seat body. When the front riding wheel winch and the rear riding wheel winch rotate to the position of the supporting riding wheel, the supporting riding wheel movably supports the front riding wheel winch and the rear riding wheel winch, and a brake winch is arranged between the front riding wheel winch and the rear riding wheel winch. Basket frame sets are arranged between the brake winch and the front riding wheel winch and between the brake winch and the rear riding wheel winch respectively. The stability of the winch in the cable twisting process is improved, and stable and reliable operation of the whole machine is ensured.

The utility model discloses an outer frame wall connecting piece which comprises a connecting screw rod, one end of the connecting screw rod is in threaded connection with an embedded sleeve rod embedded in a main body structural beam, and the other end of the connecting screw rod is provided with a buckling assembly used for fixing an outer frame steel pipe. The embedded sleeve rod and the buckling assembly are connected through the connecting screw rod, stable connection between the building outer frame and the main body structure is ensured, the buckling assembly is used for fixing an outer frame steel pipe, and the outer frame is prevented from shaking or moving under the action of wind or other external force; therefore, the stability and safety of the whole building structure are improved, and the whole device is simple in structure and convenient for workers to mount and dismount.

The utility model discloses a kind of practical wall fixing devices on medical ship, it is related to medical ship wall fixing device technical field, including wallboard body and hole wall fixing profile, one side of hole wall fixing profile is contacted with the side of wallboard body, and hole wall fixing profile is threadedly connected with wallboard body, hole wall fixing profile is embedded with multiple fixed plates, profile cover plate is clamped on hole wall fixing profile, and the outer wall of fixed plate is respectively contacted with the outer wall of profile cover plate and the inner wall of hole wall fixing profile.The utility model is driven between hole wall fixing profile and wallboard body by multiple first fastening bolts and rounded rectangular hole to carry out horizontal or vertical connection, form long strip multi-point fixing, carry out multi-point stress, effectively dispersed the pressure of wall fixing device to wallboard body, improve the strength and stability of overall structure, can better resist the jolt and sway of hospital ship sailing.

The 3D printing orthotic insole comprises a main body part, a bottom edge, an upper edge and a supporting surface which are integrally formed through 3D printing, the main body part is in a grid hollowed-out design and comprises a plurality of grid edges which are connected with one another, and the end parts of the adjacent grid edges are connected to form nodes; the main body part is also provided with a hard area and a soft area, and the hard area of the main body part is arranged corresponding to an acupuncture point or a foot arch; the bottom edge surrounds the bottom edge of the main body part, the upper edge surrounds the top edge of the main body part, and the supporting surface is arranged in the middle of the top of the main body part and is spaced from the upper edge. According to the insole integrally formed through 3D printing, the hollowed-out structure is easier to design and process, then the air permeability of the insole is greatly improved, the hollowed-out insole body structure is matched with the design of the supporting face, the sole can be sufficiently supported and buffered, and pressure borne by the foot is effectively dispersed; the utility model has the advantages of strong practicability and strong popularization significance.

The utility model discloses a pattern rib structure for preventing cracks at the groove bottom of a tire, which comprises a tire tread, and pattern grooves and pattern blocks are arranged on the tire tread. According to the utility model, the reinforcing ribs with special shapes are designed at the groove bottom of the pattern to replace the traditional arc transition, so that the pressure at the edge of the groove bottom can be dispersed, the strength of the pattern block at the groove bottom can be enhanced and the tensile deformation of the groove bottom can be reduced in the running process of the tire, thereby improving the fatigue resistance of the groove bottom of the pattern, reducing the generation of cracks at the groove bottom and prolonging the service life of the tire. The tire service life is prolonged.

The utility model discloses a kind of clean vegetable processing cutting device, it is related to clean vegetable processing technical field, including conveyer belt, conveying table, the conveyer belt one end is provided with conveying table, each corner at conveyer belt and conveying table bottom is uniformly fixedly connected with support leg, conveying table upper end surface is rotatably connected with threaded rod and threaded rod outer wall is threadedly connected with threaded sleeve, threaded sleeve upper end surface is fixedly connected with the vegetable feeding plate, conveying table left and right two ends are fixedly connected with extension plate, extension plate upper end surface is fixedly connected with support rod, fixedly connected with main plate between two groups of support rods, main plate upper end surface is provided with pressing mechanism and cutting mechanism, by the coordinated work of cam, reciprocating plate, sliding sleeve and the like structure, the automatic cutting of vegetable is realized, and reset is completed after each cutting, ensure the continuous operation and efficient production of equipment, after cutting, automatic trigger is achieved by the operation of plate, and the design of slanting end of plate can more effectively successfully push the cut vegetable into conveyer belt.

The utility model provides a kind of container handle, including snap ring and handle ring, wherein, handle ring is U-shaped, handle ring includes handle handle and two handle arms formed by the extension of handle handle two ends;Two handle arms are connected at the two sides of snap ring respectively, the handle handle includes outer hand holding part and inner hand holding part, the outer hand holding part is flat plate, the inner hand holding part is the convex portion that wave shape is formed upwards along the inner edge of outer hand holding part, the longitudinal section of the inner hand holding part is arc side, the longitudinal section of outer hand holding part is flat plate face.The handle provided by the utility model solves the technical problems such as hand strangling, easy to slip of existing handle, and the mold for preparing handle does not need to make sliding block, reduces manufacturing cost.

The application provides a clamping block for rail connection, relates to the technical field of rail connection, and comprises a first connecting part for bolt connection, the bottom of the first connecting part is integrally formed with a first reinforcing protrusion, the two sides of the first connecting part are integrally formed with symmetrical second connecting parts, the lower part of each second connecting part is provided with an outward arc-shaped hook, and the starting position of the arc-shaped hook of each second connecting part is integrally formed with a second reinforcing protrusion. The first reinforcing protrusion and the second reinforcing protrusion improve the structural strength of the clamping block, enhance the load capacity of the clamping block, avoid damage of the clamping block caused by overloading due to wind, snow and other natural loads, effectively eliminate the safety hazards of battery panel falling and causing injury and damage, and ensure long-term stable operation of the solar system.

The utility model relates to the technical field of building foundation pit drilling devices, in particular to a building foundation pit drilling device which is convenient to use and comprises a supporting base, a plurality of L-shaped positioning plates are arranged at the top end of the supporting base, a first rotating motor is arranged at the top end of each L-shaped positioning plate, and a screw rod is arranged at the rotating end of each first rotating motor. The rotating end of each first rotating motor is matched with the corresponding lead screw rod, a drilling machine body is arranged in the middles of the L-shaped positioning plates, a cross-shaped positioning block is arranged in the middle of the drilling machine body, lead screw spiral grooves are formed in the front end, the rear end, the left end and the right end of the cross-shaped positioning block, and each lead screw spiral groove is matched with the corresponding lead screw rod.

The utility model relates to valve structure technical field especially relates to a control valve, it includes: end cover, main valve block and main valve core etc. Main valve block is fixed on the end cover, forms the hollow channel in the inside of end cover and main valve block, and has the import and export, main valve core is slidably arranged in the hollow channel, and main valve core is hollow structure, and forms and has the multiple sets of throttling portion communicated to the hollow structure inside, and the annular gap is formed between the outer wall of throttling portion and the inner wall of main valve block. The utility model discloses through the multiple sets of throttling portion set up on main valve core, reduces the flow and pressure of fluid, through the annular gap formed between the outer wall of throttling portion and the inner wall of main valve block, avoids high pressure emulsion direct impact main valve core, can store emulsion through the annular gap, thereby further reduced pressure and flow impact, through the combined use of throttling portion and annular gap, can disperse pressure and flow impact, thereby improves the stability and reliability of equipment.