27results about How to "Easy to remove and replace" patented technology

The application discloses a super-large mining height hydraulic support convenient to transport, and relates to the technical field of coal mine equipment. The hydraulic support body is internally provided with a balance oil cylinder and a support column. A connecting mechanism is arranged between the support column and the balance oil cylinder and the hydraulic support body. The connecting mechanism comprises two connecting seats and two connecting shafts. The two ends of the connecting shafts are rotatably connected with mounting seats. The super-large mining height hydraulic support convenient to transport is characterized in that the connecting seat is placed into the connecting groove, then the rotating rod is rotated, the rotating rod drives the connecting plug and the butt plug to move towards each other, the first limiting seat and the second limiting seat are used for limiting the connecting seat, the butt plug is used for supporting the connecting plug, the connecting seat can be supported and locked, the balance oil cylinder and the support column can be conveniently removed and replaced, the overall height can be reduced, and the hydraulic support body can be conveniently transported.

The utility model discloses a fool-proof plug-in clamp with a quick disassembly and assembly structure, and relates to a fool-proof plug-in clamp which comprises a base. Sliding grooves are formed in the front portion and the rear portion of the base, sliding blocks are connected to the two sides in the sliding grooves in a sliding mode, U-shaped rods are fixedly installed on the surfaces of the sliding blocks, a strip-shaped frame is fixedly installed between the two adjacent U-shaped rods on the front portion and the rear portion, and a traction rod is fixedly installed at the bottom of the strip-shaped frame. The motor drives a rotating rod to rotate reversely, the rotating rod rotates reversely to drive a rotating disc to rotate, the rotating disc rotates to drive two sliding rods to move, at the moment, the sliding rods drive strip-shaped frames on the two sides to move towards the two sides at the same time, the strip-shaped frames move to drive a traction rod to move, and the traction rod moves to drive a square rod to move; and the limiting rod does not limit the square rod any more, and at the moment, the clamp head can be conveniently detached and replaced by pulling the clamp head downwards.

This utility model discloses a black key for an electric piano and an electric piano, relating to the technical field of electric pianos. It is used to mount on a keyboard base and includes a key body and an outer cover. The key body includes a mounting base for connecting to the keyboard base, with a protrusion at the upper end of the mounting base. The outer cover is made of a translucent material and has an open bottom. The outer cover is fitted onto the protrusion. Through the cooperation of the outer cover and the key body, a jelly-like visual effect is produced, unlike existing technologies where the effect is directly derived from the keys themselves. This not only creates a more realistic visual effect but also eliminates the need to disassemble the entire electric piano when these keys with special visual effects show signs of aging such as yellowing after prolonged use, making maintenance convenient.

The utility model discloses a gas circuit connecting structure of a loop sterilizer, which belongs to the technical field of sterilizer gas circuits and is characterized by comprising a loop sterilizer body, a drainage mechanism and a processing mechanism, the drainage mechanism is communicated with the rear side of the loop sterilizer body, and the processing mechanism is arranged on the inner side of the drainage mechanism. By arranging the processing mechanism, the processing assembly can be matched with the intercepting assembly, a limiting clamping plate can be limited through a spring rod base, the limiting clamping plate can be reset through the elastic force of the processing mechanism, the needed elastic force is applied when the limiting clamping plate limits a connecting clamping sleeve, and an electric heater can convert electric energy into heat energy after being powered on; the filter medium is arranged in the air inlet and conveyed to the heat conducting plate, so that the heat conducting plate conducts heating pretreatment on the flowing air, the filter medium can be limited by replacing the clamping ring, impurities in the flowing air can be preliminarily filtered by the filter medium, and the pretreatment effect during air conveying is achieved.

The utility model relates to the field of sewage treatment, and discloses a novel sewage treatment grillage machine which comprises a machine body, a rotating rod is arranged in the machine body, a sleeve is arranged on the front surface of the rotating rod, a telescopic rod is arranged on the front portion of the sleeve, and a supporting rod is arranged on the front portion of the telescopic rod. Bristles are fixedly connected to the outer wall of the supporting rod, rake teeth are arranged at the position, located in front of the rotating rod, in the machine body, and a dismounting and mounting mechanism is arranged between the telescopic rod and the supporting rod and comprises a dismounting and mounting assembly and a rotating assembly; the dismounting assembly comprises a protruding clamping block fixedly connected to the front surface of the telescopic rod and a clamping groove penetrating through and formed in the rear portion of the supporting rod. According to the device disclosed by the utility model, the rotary lantern ring is rotated to be matched with the arc-shaped guide groove to push the limiting round rod to move, so that the limiting of the supporting rod can be relieved, the supporting rod and the bristles can be conveniently detached and replaced, and then the rake teeth can be continuously cleaned, so that the service life is prolonged, and the sewage treatment effect is ensured.

This utility model relates to the field of flange hole measurement technology and discloses a differential housing flange hole position measurement device, including an operating table and a detection plate. A connecting seat is provided at the bottom of the fixed base, and the detection plate is fixedly connected to the bottom of the connecting seat. A positioning pin is fixedly connected to the bottom of the detection plate, and multiple detection pins are fixedly connected to the bottom of the detection plate. A prism groove is machined inside the fixed base, and a prism block is inserted into the prism groove. A handle is provided on one side of the fixed base, and a limit pin is fixedly connected to the inner side of the handle. One end of the limit pin is inserted into the prism block. By activating the hydraulic cylinder, the hydraulic cylinder will drive the lifting plate, the horizontal plate, the fixed base, and the connecting seat to move downward. The connecting seat will drive the detection plate to move downward, and the detection plate will drive the positioning pins and detection pins to move downward. By observing whether the positioning pins and detection pins are inserted into all the flange holes, the position of the housing flange hole can be determined.

The utility model discloses a miniaturized microwave transceiving channel device, including device body and linkage frame, linkage frame is located device body below, the inside slide coupling of linkage frame has the bottom plate, the top of linkage frame is seted up with the mounting slot, the bottom fixed mounting of device body has the mounting block, the bottom extension of mounting block reaches the inside of mounting slot, the utility model discloses a handle right pull, make handle drive square bar movement, and square bar movement drive gear moves to the outside of tooth cylinder, and gear moves to the outside of tooth cylinder can to handle rotation, handle rotation drive support rod rotation, and support rod rotation can make linkage frame rise through with the top contact of bottom plate after rotation, and linkage frame rise drive device body rise, and then reach the effect of adjusting the height of device body, after adjusting to the suitable position through handle left push, make gear reset to the inside of tooth cylinder, reach the effect of limiting the device body of adjusting.

This utility model discloses a thermo-pressed integrated CCS assembly based on FDC aluminum-based circuitry and PET film, comprising: a PCB board with welding positions; an FDC aluminum-based circuitry with one end welded to the PCB board and forming outwardly extending branches; several aluminum bars connected to the branch ends of the FDC aluminum-based circuitry; a first PET film supporting the aluminum bars and abutting against the PCB board; and a second PET film covering the aluminum bars and corresponding to the first PET film. This utility model eliminates the traditional junction box between the CCS and the PCB, effectively reducing costs and saving space; the use of a junction box acquisition design reduces material costs compared to traditional copper-based etching circuitry, while eliminating chemical pollution generated during the etching process; the design of directly welding the fuse to the PCB board allows for easy removal and replacement when the fuse blows, significantly reducing after-sales maintenance costs; and the use of PET film as a carrier reduces product weight while improving space utilization.

The utility model discloses a kind of film coating machines for seamless clothing, including bottom plate;The top of the bottom plate is provided with the coating mechanism for seamless clothing film coating, the bottom of the coating mechanism is provided with the flattening mechanism for even smearing, the side of the coating mechanism is provided with the cleaning mechanism for cleaning flattening mechanism;The utility model is provided with the cleaning mechanism, can realize the advantage of cleaning scraper, avoid the material residue of the scraping position of scraper, and avoid affecting subsequent scraping operation, so as to guarantee the effect and uniformity when scraping each time, using the cooperation of first cleaning cutter and second cleaning cutter, two faces of scraper can be cleaned simultaneously, and according to the cooperation between fixed plate, carrier plate and groove, pre-positioning can be realized before locking and fixing operation, so as to subsequent dismounting replacement, in addition, second electric sliding table realizes mobile cleaning operation, to ensure the effect of cleaning.

The utility model relates to the field of welding wire layer winding machine discloses welding wire layer winding machine is with roll anti -drifting device. Including bottom plate, motor, the bottom plate has the motor box of integratedly forming, the motor sets up in the motor box, the motor box is rotationally equipped with the pivot, is connected with the roll on the pivot, split type detachable sleeve includes upper sleeve and lower sleeve, both detachable setting in the pivot and roll middle, spacing structure includes with the base integratedly forming's cushion block, the cushion block is slidably equipped with the panel, the panel is rotationally equipped with the limit disc, and the limit disc can pass through the parallel movement of guide rail, and the roll is positioned. Compared with prior art, the advantages are that: provide good limiting device, through the limit disc of guide rail movement setting on the panel, make the limit disc and roll connection clamping, the limit disc and roll rotate together, prevent the longitudinal deviation of roll, and split type detachable sleeve is convenient to replace, prevents the surface wear and tear of pivot long time use existence gap influence roll's clamping.

The utility model relates to the technical field of power cables, in particular to a flame-retardant power cable, which comprises a flame-retardant protective sleeve, a plurality of protective mechanisms are arranged on the outer side of the flame-retardant protective sleeve, each protective mechanism comprises an upper protective cover, a protective sleeve and a lower protective cover, the protective sleeves are fixed on the outer side of the flame-retardant protective sleeve, and the lower protective covers are fixed on the outer side of the flame-retardant protective sleeve. A plurality of positioning blocks are integrally formed on the outer side of the protective sleeve, a plurality of clamping grooves matched with the positioning blocks are formed in the upper protective cover and the lower protective cover, two inserting grooves matched with the bottom end of the upper protective cover are formed in the top end of the lower protective cover, two grooves are formed in the upper protective cover, a clamping block is arranged in each groove, and the clamping blocks are arranged in the inserting grooves. Two guide columns are fixed to the opposite side walls of the two clamping blocks, four sliding grooves for the guide columns to slide are formed in the upper protective cover, each guide column is sleeved with a spring, and two inserting grooves matched with the clamping blocks are formed in the lower protective cover. The flame-retardant protective sleeve can be prevented from being abraded, and the service life is prolonged.

The utility model discloses an electrofluid jet printing device with jet flow restrained by an annular electrode, which comprises a material guide frame, the surface of the material guide frame is communicated with a spray head, an annular sliding groove plate is fixedly arranged on the surface of the material guide frame, a plurality of sliding blocks are connected in the annular sliding groove plate in a sliding mode, and the sliding blocks are arranged in an annular mode. The effect of restraining jet flow of the spray head can be achieved by arranging the annular electrode, when the annular electrode needs to be dismantled, the pressing plate can be rotated to be disengaged from the abutting plate by rotating the pressing plate, then the abutting plate is pulled upwards, and the annular electrode can be dismantled. After the abutting plate ascends, the annular electrode can be rotated clockwise, the annular electrode rotates to drive the traction rod to rotate, the traction rod rotates to drive the sliding block to rotate, after the sliding block rotates to the rearmost side of the movable opening, the annular electrode can be pulled forwards, the sliding block and the annular sliding groove plate are separated from each other, and then the effect that the annular electrode can be detached and replaced conveniently is achieved.

The piston connecting rod structure comprises a piston type compressor cylinder body and a crankshaft, the crankshaft is located on the right side of the piston type compressor cylinder body, a cylinder body sleeve cavity is formed in the right side of the piston type compressor cylinder body, and a piston is connected into the cylinder body sleeve cavity in a sliding mode. By rotating the threaded rod, the threaded rod rotates to drive the threaded sleeve to move, the threaded sleeve moves to drive the sliding block to move, the sliding block moves to drive the limiting sleeve to move, after the limiting sleeve moves rightwards, the pressing piece is not limited any more, and at the moment, the pressing piece can be pulled upwards, so that the pressing piece can be fixed. And the pressing sheet is separated from the crankshaft, so that the effect of conveniently dismounting and replacing the crankshaft is achieved.

The application discloses an atmosphere heating device for a roller kiln and a waste heat recovery method thereof, relates to the technical field of roller kilns, and comprises the roller kiln, a heat exchange pipe is arranged in the roller kiln, one end of an atmosphere pressure adjusting device is connected with the heat exchange pipe through a connecting device, the other end of the atmosphere pressure adjusting device is connected with an atmosphere input pipeline, and a control valve is arranged in the middle of the atmosphere input pipeline. Since the temperature of the injected atmosphere is generally indoor temperature, the injected atmosphere needs to absorb a large amount of heat to increase the temperature, the heat exchange pipe is arranged to absorb the waste heat in the natural cooling stage of the roller kiln and increase the temperature, so that the temperature of the atmosphere entering the roller kiln is increased, and the energy consumption of the roller kiln is reduced; the atmosphere pressure adjusting device is arranged to adjust the air pressure and the air volume of the injected atmosphere; and the connecting device is arranged to facilitate dismounting and replacing the atmosphere input pipeline.

This invention relates to the field of energy-saving vacuum pump technology, particularly negative pressure vacuum pumps, including a support assembly comprising a bracket; a pump body comprising a cylinder fixed to the top of the bracket and piston rings reciprocating inside the cylinder; and an intake assembly comprising an intake valve connected to the intake port of the cylinder, an outer tube fixed to the intake port of the intake valve, a venturi tube fixed inside the outer tube, and a composite filter element cooperating within the venturi tube's diffuser. By extending the gas's time within the composite filter element and employing a two-stage "coarse filtration-adsorption" protection system, filtration efficiency is improved, preventing contaminants from entering the vacuum pump and thus reducing frictional resistance and ineffective energy consumption. Furthermore, by significantly shortening the maintenance and replacement time of the intake assembly, the downtime of the vacuum pump due to maintenance is reduced, ultimately lowering the "start-up inrush current" energy consumption after shutdown and the probability of using the backup pump, achieving energy-saving effects.

This utility model belongs to the field of inductive adhesive coating processing device, specifically an inductive adhesive coating processing device, including a base; a pump body is arranged on the top of the base, the bottom end of the pump body is fixedly connected to the top end of the liquid storage tank, and the bottom end of the liquid storage tank is fixedly connected to the top end of the base; a replacement mechanism is arranged on the top of the base; the replacement mechanism includes a first connecting pipe, the first connecting pipe is arranged on the top of the pump body, and one end of the first connecting pipe is fixedly connected to the top end of the pump body; through the design of the replacement mechanism, the function of easy disassembly and replacement is realized, solving the problem that existing devices do not have components for replacing the nozzle, and after long-term use, the nozzle is prone to aging and damage, but existing devices cannot easily disassemble the nozzle for later replacement, resulting in reduced work efficiency in the later stages, thus improving convenience.

The utility model discloses a copper band winding storage device relates to copper band storage technical field, including mounting seat, one side fixed mounting of mounting seat has the mounting disc, the center of mounting disc rotatory mounting has the connecting shaft, one side fixed mounting of mounting seat has the motor, one side mounting of mounting disc has the storage box, the inside mounting of storage box has the winding roller, the inside mounting of storage box has the baffle disc, and the baffle disc sets up at one side of winding roller, one side mounting of storage box has the adjusting screw rod, one end of adjusting screw rod is rotatory connected with baffle disc, the front end of storage box is provided with the opening groove, and this copper band winding storage device sets up spacing structure, and the copper band volume side end face of winding is positioned, guarantees that copper band can accurately wind on winding roller, avoids appearing deviation, and winding roller adopts the mode of inserting, after winding, it is convenient to take down copper band volume, improves copper band winding storage effect.

The utility model discloses a power grid power transmission line unmanned aerial vehicle electricity testing device comprising an unmanned aerial vehicle body, the top and bottom of the unmanned aerial vehicle body are fixedly provided with carrying interfaces, the interior of each carrying interface is provided with an electroscope main body, and the surface of each electroscope main body is fixedly provided with a lap joint rod. According to the utility model, the top and the bottom of the unmanned aerial vehicle body are provided with the carrying interfaces, the electroscope main bodies and the lap joint rods, so that the unmanned aerial vehicle body can carry out electricity testing from both the lower part and the upper part, the scene adaptability is improved, and when the electroscope main bodies and the lap joint rods need to be dismounted and replaced, the electroscope main bodies and the lap joint rods can be dismounted and replaced by pressing the limiting rods. The limiting rod can be separated from the rotating plate after being pressed, then the rotating plate is rotated, the sleeve can be pulled after the rotating plate rotates, the sleeve moves to drive the traction plate and the limiting buckle to move, the limiting plate is not limited after the traction plate and the limiting buckle move, and at the moment, the effect that the electroscope body and the lap joint rod can be conveniently detached and replaced can be achieved.

The application relates to a seamless construction method for an ultralong hot-rolled concrete structure, which comprises a rectangular bin, a concrete formwork is arranged on the top surface of the rectangular bin, a fixing mechanism for fixing the concrete formwork is arranged on the rectangular bin, and a vibrating mechanism for vibrating concrete in the concrete formwork is arranged in the rectangular bin. When the seamless construction method for the ultralong hot-rolled concrete structure is used, the concrete is poured and shaped through the concrete formwork, the concrete formwork is fixed on the rectangular bin through the fixing mechanism, the concrete formwork is conveniently disassembled and replaced by concrete formworks with different sizes through the fixing mechanism, the limitation of the device is reduced, the practicability is better, meanwhile, the concrete formwork can be taken down and placed aside to wait for the solidification of the concrete after pouring, the standby concrete formwork is conveniently used for construction, the utilization rate of the device is improved, the practicability is better, and the device is more convenient to popularize and use.

This utility model relates to a blanket printing and dyeing device. Rotating frames are rotatably mounted on both sides inside the processing frame. A suspension mechanism is detachably installed between the inner sides of the two sets of rotating frames. A fixed frame is fixedly mounted on the top of the outer side of the processing frame. A rotating mechanism is installed inside the fixed frame, and the rotating mechanism and the rotating frames are connected in a transmission manner. A transmission frame is fixedly mounted on the outer wall of the fixed frame. A reciprocating push-pull mechanism is installed inside the transmission frame. A rotating rod is rotatably mounted on the middle of the inner side of the transmission frame via a bearing. A rotating motor is fixedly mounted on the middle of the side of the transmission frame closest to the processing frame. This utility model enables multiple sets of rotating frames to drive the blankets suspended on their sides to automatically reciprocate within the dye placed inside the processing frame. This makes it easier for dye molecules to penetrate the fiber gaps, promotes the flow of dye liquor between fibers, reduces local concentration differences, and simultaneously improves the printing and dyeing quality of multiple sets of blankets while reducing the labor required for manual operation.

The utility model discloses a movable welding smoke filter dust collector relates to welding dust removal technical field, including filter box, the top surface fixed connection of filter box has the PLC controller, the bottom fixed connection of filter box has four universal wheels, one end fixed connection of filter box has the first handle, and the top of filter box is provided with gas guide mechanism, and the inside of filter box is provided with two filter tow filter core, and the bottom of filter box is provided with exhaust mechanism away from the first handle side, and the lower half of filter box produces the negative pressure with fan operation, and then make the air flow of filter box upper half to the below of the baffle, in this process, will be filtered by two filter tow filter core, make three memory tube respectively towards the two sides and above of welding position, surround the welding position, and the smoke of welding will be taken by three memory tube, and after filtering through two filter tow filter core, exhaust from the exhaust pipe and organ pipe, and multi -angle suction solves the problem of poor dust removal effect of existing device.

The utility model relates to the technical field of blocking grids, in particular to a water conservancy sewage drainage blocking grid which comprises a drainage channel body, the inner wall of the drainage channel body is fixedly connected with a grid plate, and the top face of the drainage channel body is fixedly connected with a top frame through bolts. The utility model has the advantages that the rubber scraping plate slides relative to the grating plate, sundries in water can be collected through the collecting box, the rubber scraping plate can scrape the sundries adhered to the grating plate, and the scraped sundries can fall into the collecting box along the arc-shaped plate, so that the collecting box is convenient to use. The rubber scraping plate can be tightly attached to the grating plate all the time under extrusion of a spring, the sundry cleaning effect can be improved, after the rubber scraping plate is abraded, a threaded column can be twisted, a locking plate can be driven to be away from an assembling plate through threaded transmission, and locking of the assembling plate can be relieved until a clamping plate moves out of a clamping groove; and the assembling plate can be rapidly taken down from the moving frame, and the rubber scraping plate can be conveniently disassembled and replaced.

The trolley type fire extinguisher comprises a trolley and a fire extinguisher body movably arranged on the trolley, walking wheels and supporting legs are arranged at the lower end of the trolley and located on the front side and the rear side of the trolley respectively, supporting legs are arranged on the trolley, and the supporting legs are arranged on the trolley. The supporting legs are movably connected with the trolley, auxiliary supporting wheels are arranged at the lower ends of the supporting legs, and the auxiliary supporting wheels and the walking wheels can support the trolley at the same time. The fire extinguisher is movably connected with the trolley, the used fire extinguisher can be replaced, recycling of the trolley is facilitated, meanwhile, the supporting legs are arranged on the trolley, the auxiliary supporting wheels are arranged on the supporting legs, and the fire extinguisher can be supported by combining the auxiliary supporting wheels with the walking wheels during use; the pressure on arms of a person during moving is reduced, and the use is convenient.

The utility model relates to the field of silencers, and discloses a fan inlet silencer convenient to install, which comprises a silencer main body, the right side of the silencer main body is fixedly connected with a connecting pipe, the top end and the bottom end of the connecting pipe are provided with reinforcing plates, the reinforcing plates are movably hinged with installing plates, and the installing plates are fixedly connected with the silencer main body. A sound insulation layer is fixedly connected into the silencer body, a noise reduction sleeve is installed on the inner side of the sound insulation layer, and a first sound insulation sleeve is installed on the inner side of the noise reduction sleeve. According to the fan inlet silencer convenient to install, the noise reduction strength is improved through the multi-layer noise reduction and sound insulation structure, in the using process, the noise sensor can monitor noise in real time, once the noise exceeds the value, the terminal alarm module can give an alarm remotely, workers are reminded to replace and maintain the structure in the silencer body, and the noise reduction effect is improved. During maintenance and disassembly, the dustproof plate needs to be taken down firstly, then the sound insulation layer, the noise reduction sleeve, the first sound insulation sleeve and the second sound insulation sleeve can be pulled outwards one by one, and the problem that disassembly and replacement are inconvenient is solved.

This utility model relates to the field of shredder technology, specifically disclosing a detachable, split-type shredder cutter plate, including a housing plate with several evenly arranged cutter plate bodies mounted on the front of the housing plate, replacement components installed below the cutter plate bodies for disassembling and replacing traditional cutter plates, and a disassembly component installed on the right side of the housing plate for disassembling and maintaining the entire cutter plate body. By incorporating the replacement components, damaged cutter heads can be easily disassembled and replaced, eliminating the need to replace the entire cutter plate body. The disassembly components facilitate complete removal and replacement of the entire cutter plate body, significantly reducing the difficulty of traditional complete disassembly and assembly, making maintenance easier and more labor-saving, and further improving the overall production efficiency of the device.

The utility model provides a kind of filament winding machine with cutting mechanism, it is related to filament winding machine technical field, including bottom plate, one end of bottom plate top is fixedly installed with vertical board, the other end of bottom plate top is provided with moving structure, the upper end between vertical board and moving structure is provided with winding structure, the top of bottom plate is also provided with reciprocating translation structure, the side of vertical board close to reciprocating translation structure is provided with cutting structure, cutting structure is located between winding structure and reciprocating translation structure, the side of vertical board close to winding structure is provided with measuring structure, and measuring structure is located above winding structure. The utility model is provided through the setting of measuring structure, the length and diameter of filament such as geometric parameter can be measured, and information is transmitted to controller, when filament length reaches the preset value of controller, cutting structure is used to cut filament, realize automatic cutting, convenient and accurate.

The utility model relates to the technical field of coating devices, in particular to an adjustable blade coating device of a laminating machine, which comprises a support plate, two side plates fixed at the top end of the support plate, a guide roller rotatably connected between the two side plates, a support and a blade arranged above the guide roller, an electric push rod fixed at the top end of the support, and a blade fixed at the top end of the electric push rod. A scraper holder is fixed to the bottom end of a piston rod of the electric push rod, a notch is formed in one side of the scraper holder, a gland is arranged in the notch, two positioning columns are fixed in the scraper holder, two through grooves matched with the positioning columns are formed in the scraper, the top end of the gland is connected with the scraper holder through a hinge, protruding blocks are integrally formed on the two sides of the gland, and check blocks are integrally formed on the two sides of the scraper holder. Inserting blocks are arranged on the two sides of the tool apron, inserting grooves matched with the inserting blocks are formed in the bottom ends of the two check blocks, the two inserting blocks are sleeved with springs, and pulling blocks are fixed to the bottom ends of the two inserting blocks. The position of the scraper is convenient to adjust, and disassembly and replacement are convenient.