37results about How to "Guaranteed levelness" patented technology

The invention provides a plate shearing machine for fan blade plate machining, and relates to the technical field of shearing equipment, the plate shearing machine comprises a main body, a groove is formed in the rear side of the main body, the groove is of an inclined structure, the main body comprises a side plate, an open groove is formed in the side face of the side plate, a threaded rod is installed on the side face of the side plate, and a supporting assembly is installed at the top of the main body; the supporting assembly comprises an inner groove, and a telescopic assembly is installed in the inner groove; and the discharging assembly is installed on the rear side of the main body, the discharging assembly comprises a guide plate, and the top of the guide plate is installed in a groove in the rear side of the main body through a rotating shaft. The guide plate is used for guiding sheared plates, the bottom plate drives the guide plate to move through the connecting plate, the plates directly fall into the container, the workload of operators is reduced, and the problems that when an existing plate shearing machine is used, the plates sheared by the plate shearing machine directly fall onto the ground, and time and labor are wasted during picking are solved.

The application relates to a height adjusting device and a storage library. The height adjusting device comprises a height adjusting structure and an adjusting wrench. The height adjusting structure comprises a supporting base, an adjusting sleeve, a floating top base and a locking assembly. The upper surface of the adjusting sleeve is provided with a first matching surface spirally rising around a second direction. The floating top base is movably sleeved on the supporting base and located above the adjusting sleeve. The upper surface of the floating top base is provided with a second matching surface corresponding to the first matching surface. The second matching surface spirally rises around the second direction. The locking assembly is arranged on the adjusting sleeve and the supporting base. The adjusting wrench is partially arranged around the side of the adjusting sleeve. The adjusting wrench can drive the adjusting sleeve to rotate around the first direction, so that the adjusting sleeve drives the second matching surface to be lifted through the first matching surface, and the floating top base is lifted relative to the supporting base. In this way, the height of the stand column can be adjusted, the height of the stand column in the storage library is conveniently adjusted, and the levelness of the track at the top of the storage library is ensured.

The utility model discloses a laser rangefinder for lifting a table board, which comprises a shell and a laser ranging module arranged in the shell, the shell is provided with a probe hole for laser to penetrate through, the shell is also provided with a notch part, the inner side of the notch part comprises a first reference surface and a second reference surface which extend in different directions, and the first reference surface and the second reference surface are arranged on the shell. The extension direction of the first reference surface is perpendicular to the extension direction of the probe hole. According to the lifting table, the ground clearance of the lifting table board can be accurately measured through the laser range finder, whether the lifting table board is inclined or not can be conveniently judged, and the laser range finder can be rapidly positioned on the lifting table board so that measurement can be conveniently conducted. In addition, the utility model further discloses an electric lifting table provided with the laser range finder.

This utility model relates to the field of road surface maintenance technology in municipal engineering, and more particularly to a leveling device for road surface maintenance in municipal engineering. It solves the problem in existing technologies where the height adjustment mechanism lacks a locking device, leading to loosening of the adjustment components and loss of height control due to vibration during operation. The leveling device for road surface maintenance in municipal engineering includes two mounting frames and a mounting plate positioned between the two frames. Both sides of the bottom of each mounting frame are equipped with casters, and each mounting frame contains a lifting rod. The two ends of the lifting rod are connected to the interior of the mounting frame via a vertical guide structure, and the top of the lifting rod is connected to the top of the mounting frame via a vertical adjustment structure. This utility model, through the cooperation of the lifting rod and the detachable locking structure, achieves rigid fixation after adjustment, effectively preventing height changes caused by operational vibration and improving the stability and accuracy of the leveling operation.

This invention relates to the field of concrete testing, and more particularly to a concrete permeability testing device, comprising an installation table and a platform. The platform is horizontally mounted on top of the installation table, and multiple bases are mounted on the platform. A test mold body is detachably mounted on the top of each base, and a test sample is placed inside the test mold body. The installation table contains a liquid filling structure and a pressurizing structure, both of which are connected and communicate with the bases. This invention utilizes a downward-pressing external threaded ring that engages with an internal threaded ring fixedly mounted on the platform. With the aid of a circumferentially positioned lever on the downward-pressing external threaded ring, the operator only needs to hold the lever and rotate the downward-pressing external threaded ring to quickly and firmly press and fix the test mold onto the top of the base. This replaces the traditional method of tightening multiple bolts individually, greatly simplifying the test mold assembly and disassembly operations, significantly improving testing efficiency, and reducing the labor intensity of the operator.

This application discloses a grinding fixture for probes and its grinding apparatus. The fixture includes a mounting head, a mounting platform, and a connecting platform. Through this application, when grinding new probes, the design of the mounting head allows for the simultaneous grinding of one or more new probes, thereby improving grinding efficiency and avoiding the need for replacing the entire card, significantly reducing replacement costs. The new probes are then sequentially passed through corresponding positions on the mounting head, so that the tails of all new probes abut against corresponding protrusions in the simulated area. This simulates the pressure experienced by the probes during actual operation, allowing the new probes to better replace the replaced burnt-out probes after grinding. Then, the position of the mounting platform is adjusted using appropriate adjusting components to ensure that the levelness of the simulated area meets the grinding requirements, ensuring that the tips of all new probes are on the same plane, thus guaranteeing that the lengths of the new and old probes remain consistent.

The utility model discloses an unmanned aerial vehicle take -off and landing platform that high stability belongs to take -off and landing platform technical field, including support stage, the movable slot is established at support stage top, the movable slot is slidably connected with the landing board, the landing board bottom is installed with the protection mechanism, the protection mechanism is including a plurality of connecting slots, a plurality of built -in slots and a plurality of connecting plates, in the utility model, when unmanned aerial vehicle lands on the landing board, make the landing board move down, and then make the landing board drive extruding block to move down, so that extruding block extrude the pressure block, make the pressure block move to one side, and the pressure block moves and drives the connecting plate to move outward, and the other end of connecting plate drives the connecting rod one end to move to one side, and then make the other end of connecting rod move upward, so that the connecting rod drives the connecting block to move up through the hinged block, and the connecting block drives the protection frame to move up, so that the protection frame shields the landing area, so as to avoid unmanned aerial vehicle damage caused by unmanned aerial vehicle slide.

This invention discloses a remotely controllable multi-degree-of-freedom conveyor, comprising: a base plate, a height adjustment component 1 at the top of the base plate, a conveyor 1 mounted on the height adjustment component 1, a slide rail fixedly connected to the top of the base plate, a slider slidably connected to the top of the slide rail, a height adjustment component 2 fixedly connected to the top of the slider, a conveyor 2 mounted on the top of the height adjustment component 2, and a telescopic component on the conveyor 2 for adjusting the effective conveying length of the conveyor 1 and the conveyor 2; in this invention, the telescopic component utilizes a motor 1 to drive a gear and rack meshing transmission, allowing for remote and precise control of the sliding stroke of the conveyor 2 on the slide rail, flexibly changing the effective conveying length of the conveyor 1 and the conveyor 2. The telescopic components, symmetrically arranged on both sides, provide synchronous transmission, resulting in uniform force distribution and stable operation. The meshing transmission structure has high transmission efficiency and is not easily worn, adapting to different conveying distance requirements, significantly improving the equipment's adaptability range. Moreover, the adjustment process does not require manual pushing or pulling; it can be completed remotely.

The utility model relates to the technical field of wall surface trowelling, in particular to a gypsum trowelling device for ceramic tile decoration, which comprises a base, a spliced frame is mounted on the base, a holding rod is mounted in the frame in a sliding manner, adjusting parts are symmetrically mounted on the holding rod, trowelling parts are mounted at the other ends of the adjusting parts, and the trowelling parts can be controlled to be close to or far away from the frame through the adjusting parts; the frame comprises a plurality of groups of limiting rods, two groups of limiting rods are symmetrically fixed at the top end of the base, and the other limiting rods can be mutually inserted according to height requirements; at least two groups of inserting rods are fixed at the bottom end of the limiting rod, and inserting grooves are formed in the top end corresponding to the inserting rods. According to the leveling device, the limiting rods, the inserting rods, the inserting grooves and the like are arranged and assembled to form the frame, after the leveling piece is started, the leveling piece is pushed to move along the gypsum face, due to the constraint and limitation of the frame, the pressure applied by the leveling piece to the gypsum face is constant, uniform leveling at different positions can be achieved, the treatment effect is good, and the overall levelness of the wall face is guaranteed.

This utility model relates to an etching tank system, belonging to the field of semiconductor fabrication technology. The etching tank system includes an etching tank body and multiple adjusting devices. The etching tank body holds the etching solution. The adjusting devices are located outside the etching tank body and connected to its sidewalls to adjust the levelness of the etching tank body. At least two adjusting devices are arranged opposite each other, allowing adjustment of the etching tank body in opposite directions to ensure its levelness. Each adjusting device includes a detection component and an adjustment component. The adjustment component adjusts the etching tank body based on the levelness detected by the detection component to maintain its levelness. The adjusting devices in this etching tank system can adjust the levelness of the etching tank body in real time, ensuring the etching uniformity and stability of the etching tank system, further improving product quality.

This invention provides a method for positioning main reinforcing bars in the construction of reinforcing steel components, belonging to the field of building construction technology. It includes a connecting assembly, a transmission assembly sleeved outside the connecting assembly, a fixing assembly sliding inside the transmission assembly, and a receiving assembly fixed to the bottom of the fixing assembly. The connecting assembly and the receiving assembly are fixedly connected. This invention uses a clamping plate sleeved outside the vertical reinforcing bar, with a determined height. Two collars and two clamping plates are sleeved outside the reinforcing bar using a screw. By pressing down on the collars with the clamping plate, a toothed plate is driven, and a limiting block slides in a guide groove outside the clamping plate. The toothed plate pushes the transmission gear, transmission rod, and receiving frame to rotate, making the receiving frame horizontal. The reinforcing bars to be tied can then be placed on the receiving frame. Multiple positioning devices are also provided to support the reinforcing bars, keeping them horizontal, facilitating tying, and improving the quality of the reinforcing steel components.

Embodiments of the present application disclose a needle card adjusting jig. The jig comprises a suction platform, a first sliding plate, a second sliding plate, a bottom plate and a lifting assembly. According to the embodiments of the present application, when the probe is replaced, the needle card is first fixed by suction, then the horizontal movement of the needle card can be realized by moving the first sliding plate and the second sliding plate, and the vertical movement of the needle card can be realized by retracting or extending the lifting bracket. Compared with the prior art, the present application realizes the multi-point and / or continuous vertical upward support of the bottom plate arranged along the first direction and the second direction by the plurality of lifting brackets arranged linearly along one of the first direction and the second direction and the support surface extending along the other of the first direction and the second direction for supporting the bottom plate, thereby ensuring that the center of gravity of the jig is always in the center position or a certain range of the center position of the support range of the lifting assembly to the bottom plate, and ensuring that the levelness of the needle card on the jig meets the requirements.

The utility model discloses a PCB detection tool comprising a test pedestal, a mounting plate, a pressing rod, a wrench, a mounting seat, a pressing plate and a plurality of equal-height connecting columns, and the test pedestal is provided with a positioning groove used for placing a PCB to be detected; the mounting plate is mounted on the test base; the pressing rod is slidably mounted on the mounting plate; the wrench is hinged to the mounting plate and the top of the pressing rod; the mounting seat is mounted at the bottom of the pressing rod; the pressing plate is located over the positioning groove. The equal-height connecting columns are mounted at the bottom of the mounting base and detachably connected with the top of the pressing plate. And through the detachable connection design of the equal-height connecting columns and the mounting seats, the problems that the pressing plate is tedious to disassemble and assemble and the levelness is deviated are solved. The connection between the pressing rod and the pressing plate is realized through the equal-height connecting columns and the mounting seat, so that the mounting and dismounting processes of the pressing plate are simple and rapid, the flatness of the pressing plate after mounting is ensured through the height consistency of the equal-height connecting columns, the problem of inclination caused by height difference is avoided, and the levelness of the pressing plate is ensured.

The utility model discloses a leveling device is installed with road well lid includes leveling support, washer clamping subassembly, washer clamping subassembly sets up in the central structure frame, washer clamping subassembly includes adjusting shaft, bottom plate, a plurality of clamping units, adjusting shaft sets up in the central structure frame, with the vertical arrangement of central structure frame, can adjust the connection through the screw structure, is provided with bottom plate in the lower part of adjusting shaft, and the clamping unit is three, and the circumferential array is arranged on the bottom plate, the utility model discloses be used to the even installation of well lid concrete washer, through this device can conveniently realize the even installation of concrete washer with road surface, and provide a even base for well lid, thereby realize the even of road well lid, three -dimensional support structure is used in this application, can reduce the overall quality of device while guaranteeing its levelness, and the inner top type clamping structure is used to concrete washer, can be as the clamping structure of concrete washer.

The embodiment of the invention provides a high-temperature annealing furnace, comprising: a support table which is horizontally arranged in a circular ring shape and is used for bearing materials; the heat preservation and insulation layer is arranged around the edge of the supporting table; the multiple first supporting columns extend in the vertical direction, and the sides, away from the supporting table, of the environment-friendly heat insulation layers are arranged side by side; the first supporting structure is fixedly arranged on the first supporting column, the first supporting structure penetrates through the heat preservation and insulation layer, and the supporting table is borne by the end, facing the supporting table, of the first supporting structure.

The utility model discloses an angle-adjustable off-machine scutching roller, belongs to the technical field of scutching rollers, and solves the problem that an existing off-machine scutching roller is poor in cloth tensioning effect, so that the scutching effect is poor. The top of the operation table is provided with a scutching roller; a pressing roller is arranged at the front end of the scutching roller and installed on an angle adjusting mechanism. The angle adjusting mechanism comprises two adjusting rods, and the middles of the two adjusting rods are movably connected to the two supporting frames through hinge rods. One ends of the two adjusting rods are connected to the two ends of the pressing roller through the pressing roller fine adjustment assembly. The other ends of the two adjusting rods are movably connected to the telescopic ends of the two hydraulic driving cylinders. Cloth passes through the pressing roller and the scutching roller in sequence in the production process, the angle adjusting mechanism controls the pressing roller to adjust the angle and adjust the pressing degree of the pressing roller on the cloth, then the tensioning degree of the cloth is changed, it is guaranteed that the cloth is in a tightened state in the conveying process, and the scutching effect of the scutching roller is improved.

The utility model relates to the technical field of assembly type ceiling surface, especially a kind of assembly type ceiling surface of convenient construction. Including multiple main keels, vice keel and panel, multiple main keels are all installed with the suspender for being connected with the building top structure, multiple main keels are all provided with the first clamping assembly for being clamped with multiple vice keels, multiple vice keels are all provided with the second clamping assembly for being clamped with multiple panels. The utility model is through the setting of first clamping assembly and second clamping assembly, main keel and vice keel are clamped by first clamping assembly, vice keel and panel are clamped by second clamping assembly, without complex splicing operation, construction personnel only need to complete installation by corresponding clamping, reduce the requirement to the technical level of construction personnel, simplify construction process, make ceiling surface installation more convenient and efficient, significantly improve construction efficiency.

This invention discloses a pipe shrinking processing system and method, applied in the field of pipe processing technology. The pipe shrinking processing system includes: a shrinking machine with a shrinking processing cavity inside; a clamping mechanism with a clamping cavity inside; the clamping cavity includes a first cavity and a second cavity arranged sequentially along a first direction; a correction and propulsion mechanism for pushing the clamping mechanism to move and drive the pipe into the shrinking processing cavity; the correction and propulsion mechanism includes a correction limiting component with an adjustable tilt angle, the correction limiting component being adapted to the size of the second cavity, and the correction limiting component being able to be inserted into the second cavity to adjust the tilt angle of the second cavity. The pipe shrinking processing system provided by this invention can adjust the tilt angle of the pipe, ensuring the coaxiality of the pipe and the shrinking processing cavity, thereby improving the processing quality of the pipe, increasing the pass rate, and reducing the cost of pipe shrinking processing.

The application discloses a turnover tracking compression roller mechanism of a raw foil machine and a use method thereof, and belongs to the field of raw foil machine design.The turnover tracking compression roller mechanism comprises a rack and a winding roller, and further comprises a fixed shaft, two swing plates, a compression roller, a suspension shaft, a basic counterweight, a bending part, a rotating shaft, two bases, an upper clamping plate, a lower clamping plate and an auxiliary counterweight.The suspension shaft is installed on the opposite surface of the other end of the two swing plates; the basic counterweight is hung on the suspension shaft; the bending part is arranged on the fixed shaft; the rotating shaft is rotatably connected to the two ends of the fixed shaft and the two bases; the upper part of the upper clamping plate is provided with a through hole matched with the rotating shaft; the upper surface of the upper part of the upper clamping plate is fixedly connected with a contact block; the upper surface of the upper part of the lower clamping plate is fixedly connected with the lower surface of the upper part of the upper clamping plate through a compression spring; and the auxiliary counterweight is arranged on a connecting piece and clamped by the upper clamping plate and the lower clamping plate.The turnover tracking compression roller mechanism has the advantages that the design is ingenious, and as the winding diameter becomes larger, the auxiliary counterweight will automatically fall into the suspension shaft, thereby providing more pressure for the compression roller.

This utility model relates to the field of single crystal furnace leveling technology, and in particular to a single crystal furnace chamber leveling mechanism, comprising a mounting base, multiple support rods, multiple support rings, a mounting plate, multiple nuts, and multiple adjusting components. The mounting base has first mounting holes at each of its four top corners and mounting cavities at each of its four side edges. Each support rod has a second threaded sleeve threadedly connected to its outer wall, and the second threaded sleeve is fixedly connected to the corresponding first mounting hole. This application fixes the mounting base within a concrete base. The adjusting components drive the support rods to rotate via worm gears and other components. The threaded connection between the support rods and the second threaded sleeves allows for the raising and lowering of the support rods, thereby adjusting the levelness of the mounting plate. This design is independent of the precision of the concrete base and allows for real-time adjustment of the mounting plate during installation, ensuring the levelness of the single crystal furnace chamber.

The utility model relates to a positioning device for high-voltage stacked battery installation, and belongs to the technical field of high-voltage stacked energy storage batteries. The positioning device comprises a positioning base which is mounted at the top of a battery module and is matched with the battery module to fix the position of the positioning device; the positioning plate is connected with one side of the positioning base through a connecting clamp, the positioning plate is attached to the wall surface, and the positioning plate is provided with a bubble level used for judging the flatness and a precise positioning hole used for marking; the connecting clamp is used for connecting the positioning base and the positioning plate; and the bottom of the battery module is assembled in the base. By means of the precise positioning holes and the detachable structural design, accurate alignment of the battery module, the anti-toppling support and the battery module support is guaranteed, errors caused by manual operation are remarkably reduced, the bubble level is integrated on the positioning plate, the installation flatness is adjusted in an auxiliary mode, and the installation quality is guaranteed.

The utility model discloses a steel plate welding device with an aligning and calibrating mechanism, which relates to the technical field of steel plate welding and comprises a fixing mechanism, a middle positioning mechanism is slidably arranged in the middle of the fixing mechanism, and two groups of multidirectional rotating and positioning mechanisms are rotatably arranged on two sides of the fixing mechanism. The utility model solves the problems that the sizes of the existing welded steel plates are generally inconsistent, so that a clamp of a working table of a welding machine is difficult to adaptively adjust, and the welding edges are difficult to align, and the two to-be-welded steel plates are respectively aligned with the two groups of pressing components through the centering arrangement of the middle positioning mechanism. Through the arrangement of the multi-direction rotating positioning mechanisms, the two sets of multi-direction rotating positioning mechanisms are independently adjusted and rotationally arranged on the two sides of the middle positioning mechanism, the upper end of the transfer table is rotationally sleeved with a rotating block, and adjustment can be conducted according to the diagonal angles of the steel plates; the two sets of multidirectional rotating positioning mechanisms are adaptively adjusted according to the steel plates on the two sides.

The present application relates to a kind of hanging rail type intelligent fire-fighting inspection robot, including lightweight aluminum alloy multistage assembly track, inspection robot and foldable mounting rack, adjacent track section is supported and fixed by track installation platform. Matching quick mounting mechanism and quick mounting seat are arranged between track section and installation platform, realize quick disassembly and assembly;With fine adjustment sliding slot, the installation position can be fine adjusted, to ensure that track is accurately connected. The mounting rack adopts hinged folding structure, which is convenient for storage and transportation. When working, self-locking stability is realized through clamping structure and supporting pin. Drive wheel assembly is provided on the top of the robot, which is tightly fitted to the bottom surface of the track by relying on torsional spring, to ensure stable driving. The side hanging wheels can be adjusted by opening and closing through bidirectional threaded rods, which is convenient for equipment installation on the track. The two sides of the robot prevent the convex rod from falling into the hanging wheel sliding groove, effectively preventing the equipment from falling due to damage to the hanging wheel structure. The overall structure is convenient to disassemble and assemble, safe, and suitable for mobile installation and inspection scene in construction site.

The utility model discloses a novel automatic welding device for a hinged support of a protective door, and relates to the related technical field of protective doors. The device comprises a top plate, a threaded rod, a threaded cylinder, a bottom plate, a sleeve and a welding assembly, the threaded rod is screwed in the threaded cylinder through threads, the upper end of the threaded rod extends out of the threaded cylinder and is rotationally connected to the bottom face of the top plate, and the bottom end of the threaded cylinder is rotationally connected to the upper portion of the bottom plate; the threaded cylinder is sleeved with a sleeve, and a welding assembly is arranged on the outer side of the sleeve. The welding assembly comprises two base plates symmetrically fixed to the periphery of the sleeve, a U-shaped frame is arranged outside each base plate, and a U-shaped groove is formed between the U-shaped frame and the base plate on the inner side of the U-shaped frame. Through the arrangement of the welding assembly, the sleeve, the bottom plate and the threaded cylinder, the problems that large and heavy hinged supports and hinges are inconvenient to stably weld, and the levelness of the welding position cannot be effectively guaranteed are solved.

This invention relates to the field of distribution cabinet technology, specifically to an indoor metal-clad withdrawable switchgear based on dual-power supply, comprising: a switchgear body, wherein a contact seat is disposed within the switchgear body; a trolley, wherein a rotatable moving contact is disposed on the trolley; a second gear, wherein the second gear is connected to the rotating shaft of the moving contact via a clearance structure; a drive structure, wherein the drive structure is connected to the second gear and wherein a guide portion is disposed on the drive structure; a rotary connection structure, wherein the rotating shaft of the moving contact is connected, the rotary connection structure is sleeved on the drive structure, and wherein a fitting shaft is disposed inside the rotary connection structure, the fitting shaft cooperating with the guide portion; and a locking structure, wherein the locking structure is connected to the rotating shaft of the moving contact, the locking structure being able to unlock when the moving contact moves away from the contact seat and lock again when the moving contact rotates 180°, thereby improving the alignment accuracy between the moving contact and the contact seat after switching is completed.

The utility model relates to a kind of material closed discharge device and material transfer system, belong to material transfer technical field.Material closed discharge device includes butt flange, material bucket cover, connecting pipe and lifting mechanism, the butt flange is connected with the discharge pipe of airflow mixer, the bucket mouth of the material bucket cover is adapted, respirator is equipped on the material bucket cover, the connecting pipe uses hose, the connecting pipe connects butt flange and material bucket cover, the material bucket cover can be moved downwards under the action of the lifting mechanism and cover on turnover material bucket, the material of airflow mixer can enter the closed discharge in the turnover material bucket.The utility model is simple in structure, convenient to operate, realize the closed processing of the material of airflow mixing machine in discharging process, effectively avoid the problem that powder is exposed or leaked from gap, reduce the waste of material, improve workshop working environment, reduce safety risk.

The utility model provides a kind of pipe on-site processing leveling device, it includes pipe support plate, limiting component, coarse adjustment component and fine adjustment component, the limiting component is located on the pipe support plate, for fixing the pipe on the pipe support plate;The coarse adjustment component and the fine adjustment component connect the pipe support plate, respectively for coarse adjustment and fine adjustment the height of the pipe support plate is adjusted.The utility model can keep the both ends of pipe equal height in reprocessing process by the height adjustment of coarse adjustment component and fine adjustment component, ensure the levelness of pipe, avoid the problems such as pipe deformation, uneven cutout, uneven stripping pitch, difficult operation of rolling wax sealing caused by pipe free end too long in prior art, improve the accuracy and quality of reprocessing, ensure the efficiency and construction period of reprocessing;Required production materials can be locally sourced on site, and can be made of waste materials, and can be reused, save resources.

The utility model relates to the technical field of pay-off instruments, in particular to a foldable building surveying pay-off instrument which comprises a base, a pay-off disc, a laser ranging disc and a pay-off reel. A pay-off reel used for manual pay-off measurement is arranged above the base disc, a laser ranging disc used for laser ranging is arranged above the pay-off reel, a pay-off groove is formed in the center of the pay-off reel, a pay-off reel used for taking up and paying off the pay-off reel is arranged in the pay-off groove, a damping rotating shaft is arranged between the base disc and the pay-off reel, and the base disc is movably connected with the pay-off reel through the damping rotating shaft. The manual pay-off and laser ranging functions are integrated through the pay-off reel and the laser ranging disc, a constructor does not need to frequently replace equipment, the manual pay-off function is used during short-distance measurement, the laser ranging function is used during long-distance measurement, various measurement requirements of a construction site are quickly responded, the measurement time is greatly shortened, and the construction efficiency is improved. And the measurement efficiency is greatly improved.

The utility model discloses a winnowing type powder cleaning machine, which relates to the field of powder cleaning machines and comprises a powder cleaning machine main body, bottom supports are symmetrically and fixedly mounted at the lower end of the powder cleaning machine main body, and multifunctional components are movably mounted on the bottom supports. The multifunctional assembly is composed of a supporting base plate, a rubber pad, two threaded rods, fixing nuts, damping springs, a resistance reduction assembly, an inner threaded ring and a handle, the rubber pad is fixedly installed at the lower end of the supporting base plate, the two threaded rods are symmetrically and fixedly installed at the upper end of the supporting base plate, and the two fixing nuts are installed on the two threaded rods respectively; by arranging the multifunctional assembly composed of the supporting base plate, the rubber pad, the threaded rods, the fixing nuts, the damping springs, the resistance reduction assembly, the inner threaded ring and the handle, vibration generated when the powder purifier body operates can be effectively weakened, abrasion and noise caused by vibration of equipment are remarkably reduced, and the service life of the powder purifier body is prolonged. The service life of equipment is prolonged; and the working stability is improved.