41results about How to "Act as a fixed limit" patented technology

The invention relates to a wine showing stand. The wine showing stand comprises a base and a wine rack connected to the base. The wine rack comprises a lower bottom plate rotationally connected to thebase, a supporting rod longitudinally connected to the middle of the lower bottom plate, and an upper top plate connected to the top end of the supporting rod. A supporting seat for placing red wineis arranged on the upper surface of the lower bottom plate, a containing groove used for bearing a wine bottle is formed in the upper surface of the bearing base, the supporting seat is provided witha tightening mechanism, the tightening mechanism comprises clamping rods rotationally arranged on the supporting seat, the clamping rods are located on the two sides of the containing groove and act on the side wall of a wine bottle, the supporting seat is further provided with a control mechanism used for controlling the clamping rods to rotate, and the control mechanism comprises a control partextending out of the supporting seat. The wine showing stand has the advantage that wine bottles are placed more stably, and red wine is not prone to falling off when the wine rack is carried.

The invention discloses a facial mask automatic separating and taking device and a full-automatic facial mask folding and packaging machine. The facial mask automatic separating and taking device comprises a machine table, a material lifting module, a separating module and a controller, wherein the material lifting module, the separating module and the controller are arranged on the machine table. The separating module comprises a transferring mechanism fixedly arranged on the machine table and a separating mechanism slidably arranged on the transferring mechanism, the material lifting module comprises a limiting mechanism fixedly arranged on the machine table and a material lifting mechanism which is arranged corresponding to the limiting mechanism, and the material lifting mechanism is used for containing materials; and the limiting mechanism is used for fixing the materials of the material lifting mechanism, the transferring mechanism, the separating mechanism and the material lifting mechanism are all electrically connected with the controller, and the transferring mechanism drives the separating mechanism to move, so that the separating mechanism separates the materials of the material lifting mechanism. The facial mask automatic separating and taking device aims to improve the production efficiency of the full-automatic facial mask folding and packaging machine applying the facial mask automatic separating and taking device, and the labor cost is saved.

The invention belongs to the technical field of clamps, and particularly relates to a special clamp for a cylindrical workpiece. The special clamp comprises a middle clamp and an execution clamp, wherein the execution clamp is connected with an inherent clamp on a machine tool through the middle clamp. The clamp designed by the invention can be suitable for the cylindrical workpiece with a small thickness, and the inner wall and the outer wall of the workpiece are fixed at the same time through three inner clamping plates and three outer clamping plates in a using process, so that the fastening effect can be improved; and under the condition of the same fastening effect, the clamping force of the clamp on the workpiece can be relatively reduced, so that the situation that the workpiece isdamaged by clamping is prevented to a certain extent. Three fastening mechanisms are designed in the special clamp, and after three mounting shells are fixed relative to the position of an execution clamp shell, the three mounting shells play a role in fixing and limiting through the three fastening mechanisms, so that the stability of the clamp for clamping the workpiece is guaranteed.

The invention discloses a self-adaptive buckling-preventing support which comprises a sealing cylinder cavity. The top face of the sealing cylinder cavity is open. An upper sealing end cylinder is installed on the top face. A hole matched with a piston rod in radial size is formed in the center of the upper sealing end cylinder. The piston rod penetrates through the center hole of the upper sealing end cylinder and is partially installed in the sealing cylinder cavity. An energy consumption partition plate is installed on the piston rod. The energy consumption partition plate is transversely arranged on the piston rod in a sleeving manner, and moves in the sealing cylinder cavity along with moving of the piston rod. The sealing cylinder cavity is filled with damping liquid. Springs are further installed in the sealing cylinder cavity. The self-adaptive buckling-preventing support has the beneficial effects that the energy consumption partition plate can move along with the piston, an upper oil storing box cylinder, a lower oil storing box limiting cylinder and the energy consumption partition plate arranged internally have shearing and extruding effects on the damping liquid, the first-level spring and the second-level spring deform in an extruding manner to generate restoring force, after external force disappears, the piston rod is driven to carry out self restoring, and selfperformance can be adjusted automatically according to the change of the affected external excitation effect.

The invention relates to a switchable cloth printing and dyeing equipment, which includes a dyeing box part, the dyeing box part includes a switching mechanism and a spraying mechanism; the switching mechanism includes a spraying support unit, a switching unit and a walking support unit; the spraying mechanism includes a spraying mechanism device and a pressure regulating device arranged on the spraying device; the spraying part, the spraying part is arranged below the spraying support unit, the spraying part includes a spraying station, and a support is arranged below the spraying station , the front end of the support is provided with a wrinkle removal unit, and the rear end of the support is provided with an absorption unit; the adjustment part, the adjustment part is arranged above the spraying mechanism, and the adjustment part includes a lifting mechanism that moves up and down under the action of gravity of the cloth, and the lifting mechanism Cooperate with the spraying mechanism on the spraying station to drive the pressure regulating device on the spraying mechanism to adjust the pressure inside the spraying device; it overcomes the problem that the equipment does not have the flexibility to switch different color dyeing boxes and does not have the ability to self-adjust the amount of dye injection question.

The invention provides a butt-joint installation device for a building curtain wall. The installation device comprises a pushing device and a splicing device installed on the side face of the pushing device, the splicing device comprises a side plate, a pair of hydraulic rods are installed at the bottom end of the side plate, and a telescopic device is installed on the side face of the side plate. According to the installation device, through the arranged hydraulic rods, when the building curtain wall is installed in a butt joint mode, the hydraulic rods drive the side plate to move up and down so that the installation height of the building curtain wall can be adjusted, meanwhile, the arranged telescopic device can conduct telescopic adjustment on the building curtain wall, installation is easy and convenient, adjustment is easy, and the installation efficiency of the building curtain wall is improved.

The invention relates to a yarn winding forming machine comprising a ground vertical frame, winding devices and cutting-off devices. The winding devices are installed on the front end face of the ground vertical frame from left to right at equal intervals. The cutting devices are installed at the lower end of the front end face of the ground vertical frame from left to right at equal intervals. The cutting devices are located on the right side of the winding devices. The yarn winding forming machine and method adopt the design concept of an adjustable type multi-station structure to conduct winding formation on yarn, the mechanical integrated work structure is adopted, so that the labor intensity of workers is lightened, and the work process is simplified; and meanwhile, a structure havingthe clearing function is arranged to conduct hairiness removal treatment and the like on the yarn, and therefore the use quality of the yarn is improved.

The invention relates to fluting apparatuses, in particular to a construction site assembled steel pipe threaded hole fluting apparatus for high-end equipment manufacturing. The technical problem to be solved is to provide the construction site assembled steel pipe threaded hole fluting apparatus for high-end equipment manufacturing, which is higher in machining efficiency. According to the technical scheme, the construction site assembled steel pipe threaded hole fluting apparatus for high-end equipment manufacturing comprises three bases, a mounting plate arranged between the tops of the bases, an air cylinder arranged at one side of the mounting plate, a first connecting plate arranged on the air cylinder, a brushless motor arranged on the first connecting plate, a tapping drill bit arranged on the brushless motor, a conveying mechanism arranged at one side of the mounting plate, and a cooling mechanism arranged at one side of the mounting plate. Through the action of a feeding mechanism, automatic feeding of materials can be achieved.

The invention discloses a multifunctional disassembling jig which comprises a handle and a head portion located at one end of the handle. The head portion comprises a barrel sleeve and rigid pin posts densely distributed in the barrel sleeve, and the axis of each rigid pin post is parallel to the axis of the barrel sleeve. The rigid pin posts can elastically contract inside the barrel sleeve in the axis direction of the barrel sleeve through elastic elements, and the length of each rigid pin post is not larger than the length of the barrel sleeve. The head portion of the disassembling jig can be suitable for various fasteners with more size ranges where the maximum diameter is not larger than the diameter of the barrel sleeve; in actual application, various types of disassembling jigs can be replaced by the multifunctional disassembling jig, so that the situation that jigs are lost since too many jigs are carried is avoided.

The invention belongs to the technical field of wood-plastic plates, and particularly discloses a container wood-plastic bottom plate and a preparation method thereof. The container wood-plastic bottom plate comprises a core layer and a skin layer wrapping the core layer, a reinforcing layer is arranged between the core layer and the skin layer; the core layer and the skin layer are wood-plastic plates, the core layer is doped with short fibers; the reinforcing layer has a net-shaped structure and is made of glass fibers or metal, and the core layer, the skin layer and the reinforcing layer are integrally formed by adopting a co-extrusion process. By adding short fibers into the wood-plastic material of the core layer and arranging the reinforcing layer, the strength of the wood-plastic plate is remarkably improved, and the strength requirement of a container bottom plate is met. The skin layer wraps and protects the core layer and the reinforcing layer, the service life of the bottomplate is prolonged; the reinforcing layer is designed into a net-shaped structure, and a co-extrusion process is adopted, so that the bonding firmness between layers is greatly improved.

The invention provides a flatbed car for segment prefabrication factory, which includes segment and reinforcement frame, and the clamping support frame is formed by welding combination of four vertical splints and horizontal connecting plates connected in the middle of the four vertical splints, and four vertical splints The middle of the outer end surface of the splint is welded and supported with a support slant plate; the bottoms of the four vertical splints of the clamping support frame are connected and fixed with a sliding sleeve, and the four support slant plates are also welded and fixedly connected with the four sliding sleeves. And then the clamping support frame is supported and welded on the tops of the four sliding sleeves. In the setting of the support pallet in the present invention, the outer end faces of the two support pallets are arranged obliquely to support multiple support reinforcement plates, and the other ends of all support reinforcement plates are welded and fixed to the base plate, and the multiple support reinforcement plates can Increase the support strength of the support plate to avoid its oblique deformation caused by extrusion of the segment.

The invention discloses a multi-dimensional curved limiting device for electric wire and cable maintenance. The multi-dimensional curved limiting device comprises a limiting base, a twisting curved variable-diameter clamping limiting mechanism, a wrapping type expansion positioning transverse limiting device, a pre-type pull-down covering type protection mechanism and a self-service type medium pressure swing adsorption limiting device. The invention belongs to the field of electric power engineering, and particularly relates to a multi-dimensional curved limiting device for wire and cable maintenance. The curved surface principle, the dynamic principle and the nesting principle are applied to the technical field of electric power engineering, and the circumferential diameter of the spring type dynamic curved stretching elastic sleeve rod is reduced while the position of the spring type dynamic curved stretching elastic sleeve rod is changed. According to the invention, the elastic shape of the spring-type dynamic curved stretching elastic sleeve rod is utilized to fix wires and cables in different directions on the axial annular surface taking the supporting shaft as the central shaft in the twisting curved variable-diameter clamping limiting mechanism, and meanwhile, the elastic shape of the spring-type dynamic curved stretching elastic sleeve rod is utilized to change the fixing tightness, so that the technical problem that the wires and cables are fixed but not completely fixed is solved.

The invention relates to an environment-friendly treatment process for steel mill waste gas emission. A steel mill waste gas emission environment-friendly treatment device is used in the invention. The environment-friendly treatment device for steel mill waste gas emission comprises a filtering mechanism and a liquefying mechanism, the right end of the filtering mechanism is connected with a liquefying mechanism; the lower end of the liquefaction mechanism is mounted on the existing working ground; the design concept of a filtering-cleaning integrated structure is adopted for environment-friendly treatment of steel mill waste gas emission; the initial end and the tail end of the waste gas flowing path are each provided with a structure with a filtering function so that waste gas can be subjected to multi-stage filtering and impurity adsorption treatment, meanwhile, a plurality of cleaning structures are arranged so that the structures with impurities attached to the surface area can beremoved, and the situation that operation between the structures is affected due to the fact that too many impurities are accumulated in the device is reduced.

The invention relates to the technical field of infusion protection devices, in particular to an arm infusion port protection device which comprises a left top plate and a right top plate which can move relatively and are used for clamping an infusion port, the left top plate and the right top plate are both in an L shape and are arranged in a mirror image mode, and each of the left top plate and the right top plate comprises a clamping section and a bending section. The portion between the two clamping sections is used for clamping and positioning an infusion port, each clamping section is provided with an infusion port half protection cover capable of moving along the clamping section, the end face of one infusion port half protection cover is provided with a metal strip, and the end face of the other infusion port half protection cover is provided with a strip-shaped magnet. The two infusion port semi-protection covers are buckled and cover the infusion port by attracting the metal strips through the magnets. The arm infusion port protection device not only can protect an infusion port, but also can position the infusion port during puncture.

The invention provides a crimp type connector which comprises cylindrical connector body, a crimp matched body and an elastic clamping ring. The connector body is connected with the crimp matched body through a clamping structure in a clamped mode, and the connector body and the crimp matched body are fixed through the elastic clamping ring. The crimp matched body and the connector body are limited through the elastic clamping ring, only the elastic clamping ring needs to be replaced during maintenance, and the crimp type connector is very convenient to use, long in service life, short in machining cycle and low in cost.

The invention relates to a steel mill waste gas emission environmental protection treatment system, which comprises a filtration mechanism and a liquefaction mechanism, the right end of the filtrationmechanism is connected with the liquefaction mechanism, and the lower end of the liquefaction mechanism is installed on the existing working ground; the filtration mechanism comprises an L-shaped pipe, a supporting base, a first pipeline, a first protruding block, a first bolt, a second pipeline, an air inlet pipe, a second protruding block, a second bolt and a filtering and cleaning set. The design concept of a filtering-cleaning integrated structure is adopted for environment-friendly treatment of steel mill waste gas emission; the initial end and the tail end of the waste gas flowing pathare each provided with a structure with a filtering function so that waste gas can be subjected to multi-stage filtering and impurity adsorption treatment, meanwhile, a plurality of cleaning structures are arranged so that the structures with impurities attached to the surface area can be removed, and the situation that operation between the structures is affected due to excessive impurities accumulated in the system is reduced.

The invention relates to the field of textile fabrics, in particular to a picnic mat fabric convenient to disassemble and wash. The picnic mat fabric can be fixed on a bottom surface and has a sunshade function, and the problem that an existing picnic mat is single in function is solved effectively. The picnic mat fabric convenient to disassemble and wash structurally comprises a picnic mat fabricmain body, wherein an arc-shaped cover body is arranged on the top of the upper surface of the picnic mat fabric main body; cloth sleeves are arranged at the upper end and the lower end of the arc-shaped cover body; rubber bars are separately inserted in the cloth sleeves; blind holes which are matched with the rubber bars are inlaid in the upper surface of the picnic mat fabric main body; a moisture-proof mat body is arranged on the bottom of the picnic mat fabric main body; and edges of the moisture-proof mat body are connected with edges of the picnic mat fabric main body through zippers;sleeves with lower openings are separately arranged at four corners of the bottom of the moisture-proof mat body; inserting bars are downwards arranged in the sleeves; and bolts which limit the inserting bars are arranged on side walls of the sleeves. The picnic mat fabric convenient to disassemble and wash is simple in structure and convenient to use, and is suitable for multiple places.

The invention discloses a bridge pier erosion and deposition safety monitoring system, and belongs to the field of bridge pier monitoring. The bridge pier erosion and deposition safety monitoring system is characterized in that through arrangement of a scattered point detection net, along with the more and more sediment deposition amount, the pressure borne by light sensing ball points at the bottom is gradually increased, the density of the light sensing ball points is gradually reduced. the density of the generated light spots becomes smaller and smaller, and the thickness of sediment deposition becomes larger and larger, so that the situation of sediment erosion and deposition is visually and preliminarily judged according to the density of the light spots, the dependence on data is reduced, the situation of sediment deposition is effectively prevented from being judged under the condition of power failure, and potential safety hazards are reduced; and the effect of accurately judging the sediment thickness can be achieved according to the light receiving condition of the laser receiver, and each light sensing ball point is fixed to the bridge pier, so that the stability of the scattered point detection net is higher, the monitoring result is not prone to being affected, and the accuracy of the monitoring result is higher.

The invention provides an automatic anti-theft door production line, relates to the technical field of anti-theft door production, and solves the problem that when the anti-theft door production line is used, anti-theft doors on a line body are prone to deflection left and right, and workers need to manually adjust the positions of the anti-theft doors. An automatic anti-theft door production line comprises a fixed cross bar. The two sets of fixed cross bars are symmetrically arranged, the interiors of the fixed cross bars are of hollow structures, supporting legs are installed on the lower end faces of the fixed cross bars, the supporting legs are of inverted-T-shaped structures, two fixing holes are formed in the lower end faces of the supporting legs, and two sets of limiting plates are evenly installed on the upper end faces of the fixed cross bars. According to the anti-theft door, through the arrangement that the adjusting screw rod is in threaded connection with the limiting plate, the adjusting screw rod can drive the fixing plates to move forwards or backwards in the rotating process, the two fixing plates can be attached to the side plates at the two ends of the anti-theft door, the anti-theft door can be fixed and limited, and the phenomenon that the anti-theft door deflects leftwards and rightwards is avoided.

The invention relates to the technical field of mechanical arm protection structures, in particular to a mechanical arm protection structure based on teleoperation. According to the technical scheme, the mechanical arm comprises a mechanical arm base and a mechanical arm arranged at the top of the mechanical arm base, an arm rod of the mechanical arm is provided with a protection barrel, an inner protection plate is arranged in an inner cavity of the protection barrel, semicircular plates are arranged in clamping cavities in the two sides of the protection barrel and the inner protection plate, and arc-shaped protection plates are symmetrically arranged in an inner cavity of the inner protection plate; a spring B is arranged on the outer wall of the arc-shaped protection plate, a threading hole is formed in a plate body of the semicircular plate, a mounting groove is formed in an inner cavity of the plate body of the semicircular plate, fixed plates are arranged on the two sides of an inner cavity of the mounting groove, and movable plates are arranged in clamping cavities of the fixed plates. Damage caused by rigid contact when the mechanical arm collides with surrounding equipment is prevented through the protective barrel, a connecting line is fixed and limited through the threading hole and the movable plate, the situation that the connecting line is scattered is prevented, and the maintenance work difficulty of workers is reduced.

The invention belongs to the technical field of fixtures, and in particular relates to a fixture, which includes an intermediate fixture and an execution fixture, wherein the execution fixture is connected with the inherent fixture on the machine tool through the middle fixture; the fixture designed by the invention can be applied to a cylinder with a thinner thickness In the process of use, the inner wall and the outer wall of the workpiece are fixed at the same time by three inner splints and outer splints, which can improve the fastening effect. Under the same fastening effect, the clamping force of the fixture on the workpiece can be The relative reduction prevents the occurrence of pinching the workpiece to a certain extent. In the present invention, three fastening mechanisms are designed. After the positions of the three mounting shells are fixed relative to the housing of the execution fixture, the three mounting shells of the three fastening mechanisms play a fixed and restrictive role, ensuring that the fixture clamps the workpiece. stability.

The invention discloses a novel smartwatch capable of changing a dial plate appearance based on watch ring rotation. The novel smartwatch structurally comprises a watchband and a smart dial plate, wherein the watchband and the smart dial plate are locked; the watchband is composed of a watchband body and a watch buckle, wherein the watchband body and the watch buckle are in glued connection; and the smart dial plate is composed of a smart ring plate and a central dial plate body, wherein the smart ring plate and the central dial plate body are buckled, and the smart ring plate comprises a smart watch ring and a rise control device. According to the novel smartwatch, movement of a running rail rack is realized by rotating a decorative ring to start a controller, an auxiliary lifting branchring is driven to move up during the movement of the running rail rack, increase of the height of a rise control frame and a central lifting structure is realized, and then increase of the height of the smart dial plate is realized; and it is convenient for a user not to take off the novel smartwatch in use, a simplified style is realized, the function of changing the figure of the dial plate is achieved, the user can wear the novel smartwatch for a long time and can switch the height of the dial plate at will, and the novel smartwatch is convenient to use on multiple occasions and can be matched with multiple styles of clothing.

The invention discloses a stand column section bar grinding and fixing process device. A bracket comprises supports and a cross piece, wherein the supports are of triangular structures; the cross piece is arranged between the two supports; two rectangular grooves for placing stand column section bars are formed in the cross piece; reinforcing ribs are arranged on the supports; a reinforcing crossrod is arranged between the reinforcing ribs; and the cross piece arranged between the two rectangular grooves is connected with the reinforcing cross rod through an auxiliary support. According to the stand column section bar grinding and fixing process device disclosed by the invention, square tubes are welded to accomplish replacing a condition that positive and negative surfaces of the stand column section bars only can be grinded by a F-shaped blocking flange in the prior art, so that the stand column section bar grinding and fixing process device is convenient in operation, and improvesworking efficiency.

The invention relates to the field of zinc sulfide and discloses an extruding and pelletizing device of zinc sulfide. The device can be used for compacting wet zinc sulfide powder, and then the compacted zinc sulfide powder can be guided out in a rotating manner, so that the problem of relatively low manual completion efficiency of the original pelletizing of zinc sulfide is effectively solved. The device structurally comprises a first mould at the outer part, wherein the first mould is in a cuboid shape with an opening upwards as a whole; a second mould is arranged inside the first mould; thesecond mould is in a cylindrical shape with an opening upwards as a whole and is formed by splicing eudipleural connecting parts; each of the connecting parts is in a semi-cylindrical shape; the outer surfaces of the bottoms of the connecting parts are in contact with the inner bottom surface of the first mould; first fixed blocks are arranged on the outer surfaces of the front end part and the rear end part of each of the connecting parts respectively; a lying T-shaped sliding block is fixedly arranged on the outer surface of each of the first fixed blocks; and sliding chutes matched with each of the T-shaped sliding block are embedded in the inner surfaces of the front side wall and the rear side wall of the first mould. The device is simple in operation and convenient in use and is suitable for various places.

The invention discloses a high temperature resistant cable for electrical appliance control, include a protective layer, A heat dissipation plate and a cable body, wherein the inside of the protectivelayer is provided with a fire-proof heat insulation layer, the inside of the fire-proof heat insulation layer is provided with a shielding layer, the inside of the shielding layer is provided with aninsulation layer, the inside of the insulation layer is provided with a traction layer, a heat dissipation plate is arranged at the center of the inside of the traction layer, a heat dissipation arcis arranged at the left and right ends of the heat dissipation plate, and a first spring is arranged at the middle part of the upper end of the heat dissipation plate. In accordance with that presentinvention, The cable passes through the protective layer, fire insulation layer, shielding layer, insulation layer and traction layer, The heat dissipation protection block transfers heat to the heatdissipation plate, and the heat dissipation plate transfers heat to the heat dissipation arc at both ends, which is advantageous to the heat dissipation of the cable, so that the cable can work normally and stably under the high temperature, and the signal or electric energy transmission performance is not affected, so that the cable has a longer service life.

The invention provides a crimp type connector which comprises cylindrical connector body, a crimp matched body and an elastic clamping ring. The connector body is connected with the crimp matched body through a clamping structure in a clamped mode, and the connector body and the crimp matched body are fixed through the elastic clamping ring. The crimp matched body and the connector body are limited through the elastic clamping ring, only the elastic clamping ring needs to be replaced during maintenance, and the crimp type connector is very convenient to use, long in service life, short in machining cycle and low in cost.

The invention discloses a multi-dimensional curvilinear limit device for wire and cable maintenance, which comprises a limit base, a twisting curvilinear variable-diameter engagement limit mechanism, a wrap-type expansion and positioning transverse limit device, and a pre-type pull-down cover type protection Mechanism and self-service intermediary PSA limiter. The invention belongs to the field of electric power engineering, and specifically refers to a multi-dimensional curved limit device for wire and cable maintenance; the curved surface principle, dynamic principle and nesting principle are applied to the technical field of electric power engineering, and by changing the spring type dynamic curved The position of the stretching elastic sleeve rod is reduced at the same time, and the circumferential diameter of the spring-type dynamic curved stretching elastic sleeve rod is reduced, so as to realize the axial ring with the support shaft as the central axis in the twisting, curved, diameter-changing and engaging limit mechanism. The wires and cables in different directions on the surface are fixed, and at the same time, the elastic shape of the spring-type dynamic curved stretch elastic sleeve is used to change the tightness of the fixation, which solves the contradictory technical problem that the wires and cables are both fixed and not completely fixed.

The invention provides a device for testing the performance of a rotary electric brush of constructional engineering machinery. The device comprises a box body and a fixed shell; a motor is arranged at the left end of the box body, the motor is rotatably connected with a transmission shaft, and three groups of commutator segments are uniformly arranged on the transmission shaft; the lower end of the box body is fixedly connected with a bottom plate, two sets of V-shaped grooves are symmetrically formed in the surface of the bottom plate, and collecting boxes are arranged at the bottom ends ofthe V-shaped grooves; three sets of bases are arranged at the upper end of the bottom plate in an aligned mode, two sets of limiting devices are symmetrically arranged at the upper ends of the bases,and the limiting devices are fixedly connected with connecting columns. and a conductive device is arranged in the fixed shell, a partition plate is arranged in the middle of the fixed shell, and a threading hole is formed in the middle of the lower end of the partition plate. According to the invention, a bidirectional lead screw is in threaded connection with two sets of sliding plates, so thatthe two sets of sliding plates move inwards at the same time when a hand wheel is rocked to drive the bidirectional lead screw to rotate, the fixed shell is always positioned in the middle of a U-shaped table, and carbon brushes at the two ends of a commutator segment are always positioned at symmetrical positions.

The invention discloses a brick grinding wheel machine for construction sites, which includes a walking device and a grinding wheel machine device; four corners of the lower end surface of the base are respectively provided with hydraulic cylinders, and the hydraulic cylinders are connected to the base through telescopic rods; The foot is fixed under the hydraulic cylinder; the support brick frame is fixed on the left side of the upper end surface of the base, and the support brick support is connected with the support brick bottom plate; the support brick bottom plate is provided with a chute, and the notch of the chute To become parallel or perpendicular to the grinding wheel, the chute is slidingly matched with the slide rail on the side plate of the supporting brick, and the side plate of the supporting brick is inlaid with steps, and the steps are fixed with the bottom plate of the supporting brick through fastening bolts; the present invention solves the problem of the prior art The problems existing in the operation of breaking bricks can be very convenient to cut off the bricks with broken grooves to obtain broken bricks with relatively neat fractures, thereby reducing the time for grinding the broken bricks again and improving the construction of the entire building. efficiency and avoid material waste.

The invention discloses a novel smartwatch capable of changing a dial plate appearance based on watch ring rotation. The novel smartwatch structurally comprises a watchband and a smart dial plate, wherein the watchband and the smart dial plate are locked; the watchband is composed of a watchband body and a watch buckle, wherein the watchband body and the watch buckle are in glued connection; and the smart dial plate is composed of a smart ring plate and a central dial plate body, wherein the smart ring plate and the central dial plate body are buckled, and the smart ring plate comprises a smart watch ring and a rise control device. According to the novel smartwatch, movement of a running rail rack is realized by rotating a decorative ring to start a controller, an auxiliary lifting branchring is driven to move up during the movement of the running rail rack, increase of the height of a rise control frame and a central lifting structure is realized, and then increase of the height of the smart dial plate is realized; and it is convenient for a user not to take off the novel smartwatch in use, a simplified style is realized, the function of changing the figure of the dial plate is achieved, the user can wear the novel smartwatch for a long time and can switch the height of the dial plate at will, and the novel smartwatch is convenient to use on multiple occasions and can be matched with multiple styles of clothing.