921 results about "Frustum" patented technology

The invention discloses a thinning drawing die capable of improving hole wall thickness uniformity, which comprises an upper die holder, a lower die holder, an upper backing plate, an ejector rod fixing plate and a female die sleeve fixing plate, the upper backing plate, the ejector rod fixing plate and the female die sleeve fixing plate are sequentially stacked and fixed on the upper die holder, and a thinning female die sleeve is arranged on the female die sleeve fixing plate; a thinning male die is fixedly arranged on the lower die base. The thinning male die comprises a solid cylinder part and a variable end located on the cylinder part, the diameter of the variable end is gradually decreased from the end, in butt joint with the cylinder part, of the variable end to the tail end, and an inverted-cone-shaped counter bore is formed in the end of the variable end. A group of separation seams arranged along the axis direction of the thinning male die are uniformly distributed on the side wall of the variable end head, and the variable end head is separated into a plurality of mutually independent thinning stretching sheets by the separation seams; the ejector rod fixing plate is provided with an ejector rod for opening the variable end, and the end of the ejector rod is provided with a frustum matched with the counter bore. The internal uniformity of the fin holes can be improved, and the height of the fin holes is increased.

The invention belongs to the technical field of surgical robots, and particularly relates to an articulated lens connecting structure applied to a continuum surgical robotic.When the connecting structure is used, firstly, the mounting end of a tool bit penetrates into a first cavity, and the mounting end of the tool bit makes friction contact with the inner wall of the first cavity; the installation end of the tool bit is located between the multiple clamping pieces, the tool bit is higher than the clamping pieces, the installation end of the tool bit is rotated, then the rotary connector and the fixed connector are driven to rotate relatively, the multiple clamping pieces are driven to get close to and clamp the tool bit, installation of the tool bit is achieved, and the tool bit can be disassembled by rotating the tool bit reversely. Connection is convenient, fast and firm, and the possibility of surgical risks is reduced; and meanwhile, the first cavity is arranged to be in an inverted frustum shape, so that the first cavity can be matched with tool bits of different shapes and sizes, and the applicability is higher.

The invention provides a sealing plug, an underground gas storage and a construction method of the underground gas storage. The sealing plug comprises a body, a force bearing structure arranged outside the body in a sleeving mode and a retaining wall arranged on one axial end side of the body and the force bearing structure, the body is a cone frustum, the force bearing structure is provided with a first layer and a second layer from inside to outside, the first layer is attached to the outer surface of the body, and the second layer is attached to the outer surface of the body. A first contact surface and a second contact surface are arranged on the outer surface of the second layer, and an included angle is formed between the first contact surface and the second contact surface in the axial direction of the body. The sealing plug is designed to be of a variable cross-section structure, so that the sealing plug meets the requirements of high pressure, cyclic load and cyclic impact under the operation condition of the gas storage, the risk of structural instability is reduced, and the sealing plug is simple in structure, convenient to construct and higher in reliability.

The invention discloses a high-precision point iridium welding device and process, and relates to the technical field of pen point welding. The device comprises a conveying assembly capable of moving along an annular path, a welding assembly arranged below the conveying path and positioning tools arranged corresponding to conveying blocks. The conveying assembly comprises a plurality of conveying blocks, and the positioning tool is used for inserting a to-be-welded pen point base material; the welding assembly comprises a hopper, a feeding pipe coaxially connected with the hopper in a sliding mode, an electrode ring fixed to the top end of the feeding pipe and an inverted-cone-frustum-shaped iridium particle groove formed in the top end. The hopper can be filled with iridium particles to be welded, the feeding pipe can ascend and descend in the vertical direction, and the iridium particle groove can bear one iridium particle. Through cooperation of the conveying block and the positioning tool, quick assembly and feeding of the pen point base material are facilitated, the feeding difficulty is reduced, and manual feeding is more labor-saving.

The invention discloses a support installation angle measuring device for photovoltaic power generation, which relates to the technical field of measurement and comprises an installation position structure, a magnetic field control assembly and a measuring assembly. The installation position structure is arranged at the connection position of a stand column and a cross beam of the photovoltaic support, the connection point of an inclined supporting rod and a main frame and the connection area of a base and a foundation, under the cooperation of the magnetorheological fluid cavity assembly and the magnetic field control assembly and the design of a spiral flow guide groove and a cone frustum cavity, the fluid distribution uniformity is improved, and under the action of a magnetic field, the fluid distribution uniformity is improved. The spiral flow guide grooves guide the magnetorheological fluid to form spiral flow and cooperate with a rotating magnetic field, the support fixing effect is remarkably enhanced, and when the support deviates due to external force, the micro stress sensor of the magnetorheological fluid cavity reversely deduces the angle through shear stress changes and feeds the angle back to the magnetic field control assembly for real-time correction. Therefore, stress is released and deformation is corrected under extreme working conditions such as strong wind and earthquakes, and the accuracy and response speed of angle control and measurement of the support are greatly improved.

The utility model provides a detection die body for calibrating a laser lamp of an accelerator. The detection die body comprises a die body in the shape of a regular quadrangular frustum pyramid, first cross lines are arranged on the four inclined surfaces of the die body, and each first cross line comprises a transverse line parallel to the bottom surface of the die body and a vertical line perpendicular to the transverse line; all the transverse lines are located in the same plane, and all the vertical lines intersect at the midpoints of the corresponding transverse lines; at least one inclined plane is provided with a vertical plate arranged along the corresponding vertical line, and the vertical plate is perpendicular to the inclined plane; marking lines coplanar with the transverse lines are arranged on the side face of the vertical plate. According to the detection die body for calibrating the laser lamp of the accelerator, the die body in the shape of the quadrangular frustum pyramid, the vertical plate arranged on the inclined plane, the cross line and the marking line are arranged, and the deviation between the laser line projected on the die body by the laser lamp and the cross line and the marking line is observed; and the position deviation of the laser lamp in each direction can be rapidly detected.

The invention belongs to the technical field of antennas, and relates to a dielectric resonator antenna, which comprises a bottom plate and a dielectric block arranged on the bottom plate, the dielectric block comprises a first part of a regular quadrangular frustum pyramid structure, and the lower bottom surface of the first part is arranged at the center of the bottom plate to form a dielectric resonator; the dielectric block further comprises a second part of a regular quadrangular frustum pyramid structure; the upper bottom surface of the second part is overlapped with the upper bottom surface of the first part; the side length of the lower bottom surface of the second part is larger than that of the first part, and the height of the second part is smaller than that of the first part; the lower bottom surface of the second part is provided with a resonant tank recessed towards the first part, and the resonant tank is of a cube structure. The antenna can be applied to the S wave band, and ultra wide band and light weight are realized at the same time.

A ground source heat pump pipeline connecting device belongs to the field of pipeline connecting devices and comprises a double-U connector body, the upper end of the double-U connector body is a cylinder, the lower end of the double-U connector body is a cone frustum, two sets of U-shaped grooves are formed in the double-U connector body, one end of each U-shaped groove is fixedly communicated with a liquid inlet pipe, and the other end of each U-shaped groove is fixedly communicated with a liquid outlet pipe. A ventilation through hole is formed in the middle of the double-U connector body, a vertical shaft is movably arranged in the ventilation through hole and rotationally installed on the double-U connector body, and spiral blades are fixedly installed on the periphery of the vertical shaft. The double-U connector is simple in structure and ingenious in conception, the ventilation through hole can be continuously cleaned through thrust of the push rod on the double-U connector body, so that the ventilation through hole keeps the pressure discharging function, the market requirement can be met, and the double-U connector is suitable for popularization.

The invention belongs to the technical field of machine tool metal machining, and particularly relates to an air conditioner copper pipe flaring and chamfering treatment device which comprises a fixing ring, a matching sleeve is fixedly connected to the fixing ring, a moving column is slidably connected to the matching sleeve, a longitudinal piece is fixedly connected to the moving column, a fixing sleeve is fixedly connected to the longitudinal piece, and a flaring and chamfering device is arranged on the fixing sleeve. The fixing sleeve is rotatably connected with a frustum part, the front side of the frustum part is fixedly connected with a cylindrical part, the cylindrical part is connected with a chamfering head, the device further comprises a plurality of auxiliary grooves formed in the cylindrical part, the inclination angles of openings of the auxiliary grooves are gradually increased in the clockwise direction, the device further comprises a connecting plate fixedly connected to the longitudinal piece, and the connecting plate is fixedly connected with a collecting part. Chamfering and chambering operation can be continuously achieved in the device in sequence, machining errors are reduced, and convenience is brought to actual production.

The utility model provides an assembly type building embedded part which comprises an assembly part and an embedded part, the assembly part comprises an expansion pipe, a plurality of openings are formed in the side wall of one end of the expansion pipe at equal angles, a frustum body is arranged at one end of the expansion pipe and is close to the openings, a screw is arranged at one end of the frustum body, and a nut is arranged at the other end of the frustum body. The threaded rod extends into the expansion pipe, a transverse rod is fixedly connected into the expansion pipe, the threaded rod penetrates through and is in threaded connection with the transverse rod, a threaded section is arranged on the inner wall of the other end of the expansion pipe, the embedded part comprises a fixing plate, a connecting and inserting pipe is fixedly connected to the middle of the fixing plate, one end of the connecting and inserting pipe is arranged to be an arc section, and the other end of the connecting and inserting pipe is provided with a threaded section. The expansion pipe is arranged in the insertion pipe in a matched mode, and a blocking cover is arranged at the end of the arc section in a buckled mode. And by arranging the assembly part and the embedded part, construction of the embedded part and connection of external connection are facilitated.

The present invention discloses a precision casting automatic casting device, which relates to the technical field of casting devices. The precision casting automatic casting device includes a base, a cylindrical mold is fixed in the middle of the top end of the base, three support rods are fixed on the outer side of the top end of the base, a frustum is fixed at the top ends of the three support rods, a multi-track linear motor is fixed at the top end of the frustum, a telescopic feeding pipe is embedded in the frustum, and the telescopic feeding pipe is arranged to facilitate casting into the overall combined mold. Three track grooves are formed in the frustum, and three outer mold components are arranged inside the frustum. By arranging three movable outer mold components in the present invention, after the casting and forging are completed in this application, the three movable outer mold components can be controlled by the multi-track linear motor to perform independent unfolding and movement, and there will be no problem of material jamming.

The automatic tensioning mechanism of the I-shaped wheel of the present invention comprises a main shaft, which comprises a main body and an insertion part, wherein the main body has a first space inside, and the insertion part has a second space inside, a rotating rod is provided at one end of the main body, one end of the rotating rod is arranged in the first space, and the other end extends from the opening end of the first space, a long pull rod runs through the first space and the second space, one end of the long pull rod is threadedly connected to the end of the rotating rod, and the other end is connected to the tensioning shaft head, an tensioning spring is provided on the outside of the long pull rod in the first space, one end of the tensioning spring contacts the bottom surface of the first space, and the other end contacts the end surface of the rotating rod, and the insertion part comprises an integrally arranged connecting part, a frustum part and a cylindrical part in sequence, one end of the connecting part is fixedly connected to the main body, a step part is provided between the connecting part and the frustum part, the farther the frustum is from the main body, the smaller the radius is, and a tensioning sleeve is sleeved on the cylindrical part. The present invention can quickly realize the tensioning and clamping of the I-shaped wheel, and the structure is simple and practical.

The utility model provides an underground chamber with a breathing gas storage membrane, which comprises an embedded part and a gas storage membrane, the embedded part comprises a main body and a cover body, a cavity with an opening at the upper end is formed in the main body, a working cavity is formed in the main body, and the cover body is arranged at the opening end at the upper end of the main body; the main body is of a circular-truncated-cone-shaped structure with a small upper end and a large lower end, and the cover body is of an inverted circular-truncated-cone-shaped structure with a large upper end and a small lower end; the gas storage film is arranged in the working cavity, a cavity is formed in the gas storage film, a gas storage cavity is formed in the gas storage film, and a compression cavity is formed between the inner wall of the working cavity and the outer wall of the gas storage film; the first pipe body assembly is communicated with the gas storage cavity; and the second pipe body assembly is communicated with the compression cavity. The underground chamber with the breathing gas storage film is compact in structure, low in construction difficulty, good in sealing performance, capable of achieving stable output of medium gas, small in occupied area, low in manufacturing cost, good in using effect and wide in application range.

The invention discloses an ocean mooring pile anchor and a construction structure and a construction method thereof, the ocean mooring pile anchor comprises a pile anchor main body, the pile anchor main body is tubular, and fins are arranged on the outer side wall of the pile anchor main body; the umbrella cap is a thin-wall shell, the appearance of the umbrella cap is in an inverted circular truncated cone shape, the cross section of the umbrella cap shrinks linearly in the axial direction, the whole umbrella cap is of a big-end-up conical curved surface structure, the umbrella cap is fixedly arranged at one end of the pile anchor body, the circular-truncated-cone-shaped large-area end face of the umbrella cap faces the pile anchor body, and the outer diameter of the fins is smaller than the diameter of the circular-truncated-cone-shaped large-area end of the umbrella cap. The ocean mooring pile anchor construction method is used for installing the ocean mooring pile anchor through the ocean mooring pile anchor construction structure and comprises the steps that S1, preparation work is conducted, S2, hoisting work is conducted, S3, piling work is conducted, and S4, the accompanying pile, the guide pipe and the jetting device are taken back in sequence, and the anchor chain is tightened through the winch.

The utility model relates to an intestine separator for a common poultry slaughtering production line, which comprises a frame, a motor, a power transmission device and an extrusion separating device, the motor is mounted in the middle of the frame, a driving rotating shaft of the power transmission device is mounted in a gearbox, a driving gear is mounted in the middle of the gearbox, and the right end of the gearbox is connected with a coupling sleeve of a tooth roller A; the driven rotating shaft is mounted in the gearbox, a driven gear is mounted in the middle of the driven rotating shaft, and the right end of the driven rotating shaft is connected with the B tooth roller coupling sleeve; an A tooth roller and an A tooth roller shaft of the extrusion separation device are installed in a tooth roller box and connected with an A tooth roller coupling sleeve, and a B tooth roller and a B tooth roller shaft are installed in the tooth roller box and connected with a B tooth roller coupling sleeve. And the outer diameter contours of the A tooth roller and the B tooth roller are divided into three parts, namely a cylinder, a small cone frustum and a large cone frustum. The automatic intestine picking machine has the characteristics of capability of replacing manual intestine picking, small occupied labor force, low labor intensity, low production cost, good working environment, high production efficiency, high automation degree and the like.

The invention provides a tower main material deformation quantity and curvature detection method and system based on a three-dimensional laser point cloud, and the method comprises the steps: firstly carrying out the multi-angle scanning of a power transmission tower through a three-dimensional laser scanner, extracting a tower point cloud, and then carrying out the noise reduction filtering; performing orientation and rotation on the tower point cloud by adopting a PCA algorithm; performing horizontal slice projection on the tower, and extracting the point cloud of the quadrangular frustum pyramid part of the tower body through the length-width ratio, the area ratio and the point number of point cloud slices; respectively calculating four vertexes of each layer of slice of the quadrangular frustum pyramid, and then calculating the distance from the vertex of each layer of slice to the connecting line of the end points of the main material; whether a slope change point exists or not is judged through the slope change of the vertex of the principal material, and the quadrangular frustum pyramid slices above the slope change point are removed; and finally, the deformation quantity, the bending degree and the position of the main material are obtained through calculation. The method has the advantages of being high in measurement precision, small in labor amount and the like, and effectively solves the technical problem that the deformation quantity, the bending degree and the position of the tower main material are difficult to measure.

The utility model discloses an automatic hard plastic check ring assembling mechanism which comprises a bottom plate connected with a top plate through a stand column, the top plate is connected with an air cylinder, an extending rod of the air cylinder is downwards connected with a press-fitting mechanism, the press-fitting mechanism is downwards connected with a press-fitting barrel, and the end, to be sleeved with a plastic check ring, of a workpiece faces upwards and bears a frustum-shaped guide block upwards. The diameter of the lower end of the guide block is equal to the diameter of the end, to be sleeved with the plastic check ring, of the workpiece, the circumferential surface of the guide block is used for bearing the plastic check ring to be press-fitted, and the guide block faces the press-fitting cylinder upwards. When the air cylinder is pressed downwards, the press-fitting barrel is driven to move downwards, the plastic check ring moves downwards along the guide block, and the plastic check ring is naturally and evenly expanded by the guide block and is smoothly sleeved into a workpiece rubber ring groove. The press fitting process does not depend on manual operation of the plastic check ring, the check ring is evenly stressed in the circumferential direction, the check ring is prevented from being scratched and turned over and twisted, the assembly efficiency is greatly improved, and the problem of oil leakage of an engine is solved.

Various showerheads and methods are provided. A showerhead may include a faceplate partially defined by a front surface and a back surface, a back plate having a gas inlet, a first conical frustum surface, and a second conical frustum surface, a plenum volume fluidically connected to the gas inlet and at least partially defined by the gas inlet, the back surface of the faceplate, the first conical frustum surface, and the second conical frustum surface, and a baffle plate positioned within the plenum volume, and having a plurality of baffle plate through-holes extending through the baffle plate. The second conical frustum surface may be positioned radially outwards from the first conical frustum surface with respect to a center axis of the showerhead, and the second conical frustum surface may be positioned along the center axis farther from the gas inlet than the first conical frustum surface.

The invention discloses an intelligent clamp for an intelligent manufacturing production line and a clamping method, and belongs to the technical field of clamps. According to the method, a body is of a cone frustum structure, the lower end of the cone frustum structure is connected with a connecting flange, and an annular shell is arranged on the periphery of the cone frustum structure; the circular truncated cone structure is provided with a bonding expansion sleeve for clamping a workpiece and a calibration piece, a pull rod and a piston for implementing measurement are arranged in the circular truncated cone structure, various circuits and related parts are arranged in the annular shell, and the flange is used for being connected with a machine tool. The clamp can achieve the purpose of accurately monitoring the machining state and the part clamping force in the precise machining process in real time.

The invention relates to the field of polymerized abrasives, in particular to a novel stacked abrasive grinding and polishing material and a preparation process thereof. The scheme comprises the following steps: (1) immersing a base material into an adhesive, and preparing a back bottom layer on one surface of the base material after immersion to obtain a pretreated base material; (2) primer coating: coating the primer on the other surface of the pretreated base material to obtain a glued base material; (3) sand planting is conducted, specifically, sand is evenly planted on the primer side of the glued base material, sand planting particles are in a quadrangular frustum pyramid shape, then a layer of composite glue is coated, and a semi-finished product is obtained after drying; and (4) curing preparation: heating and curing the semi-finished product for 6-24 hours to obtain the novel stacked abrasive grinding and polishing material. The novel stacked abrasive grinding and polishing material prepared by the scheme has the characteristics of long service life, good heat dissipation performance and stable roughness.

The utility model relates to a large-caliber high-pressure anti-leakage quick cut-off valve with an abrasion compensation function, which comprises a valve body, an elastic valve core, a sealing body and a driving mechanism, the valve body is of a T-shaped structure, the valve body is further provided with a liquid inlet communicated with the inside of the valve body, and the liquid inlet is positioned between two ends of the valve body; the sealing body is fixedly installed at the lower end opening of the valve body, the valve element is installed in the valve body, and the driving mechanism is installed at the upper end opening of the valve body and connected with the valve element. The valve is simple in structure and reasonable in design, reciprocating motion of the valve element can be achieved, abrasion of the sealing face of the valve is small in the closing and opening process of the valve, the valve element sealing body is composed of the plane disc and the cone frustum which are assembled into a whole through the sealing elastic material, and the cone frustum and the plane disc have certain relative displacement freedom. The valve element sealing face and the valve body sealing face are sealed in a combined mode through a disc face and are sealed in a tangent mode through a valve element cone frustum and a valve body cone frustum hole, two-stage sealing is achieved, and the sealing effect is enhanced.

The invention discloses a multidirectional anti-collision protection device, and relates to the technical field of laser cutting and welding. Comprising a swing arm rocker, the front end of the swing arm rocker is a round rod, the tail end of the swing arm rocker is a circular truncated cone, a back pressure spring is arranged on the side face of the circular truncated cone, and a spring mounting groove is formed in the back face of the swing arm rocker. The multidirectional anti-collision protection device has the advantages that 360-degree multidirectional no-dead-corner anti-collision is realized, hard collision of the working laser head is changed into soft contact, the influence on other parts in collision accidents is eliminated, the defect that the working laser head is easy to damage due to collision is overcome, a large amount of maintenance and replacement cost is saved for enterprises, more time is saved, and the working efficiency is improved. Production is not delayed any more due to collision accidents; the problems that a laser head is easy to collide with a plate, a cutting torch is easy to abrade, leapfrog and the like of laser equipment are solved; internal parts are high in precision, sensitive in induction and rapid in response, and safety is ensured through contact, pressure induction and multiple signal alarm; the installation is simple and convenient, the installation plate is self-adaptive, and all models can be adapted.

Various showerheads and methods are provided. A showerhead may include a faceplate partially defined by a front surface and a back surface, a back plate having a gas inlet, a first conical frustum surface, and a second conical frustum surface, a plenum volume fluidically connected to the gas inlet and at least partially defined by the gas inlet, the back surface of the faceplate, the first conical frustum surface, and the second conical frustum surface, and a baffle plate positioned within the plenum volume, and having a plurality of baffle plate through-holes extending through the baffle plate. The second conical frustum surface may be positioned radially outwards from the first conical frustum surface with respect to a center axis of the showerhead, and the second conical frustum surface may be positioned along the center axis farther from the gas inlet than the first conical frustum surface.

The utility model provides an air door adjusting device, burner assembly and gas stove, the air door adjusting device includes: an air door sheet, the air door sheet is arranged at the inlet of the burner injection pipe, the air door sheet includes a frustum portion, the frustum portion is at least partially located inside the inlet of the injection pipe, so that an annular gap is formed between the frustum portion and the inlet of the injection pipe; and the adjusting group is in transmission connection with the air flap and is used for driving the air flap to move along the axis so as to adjust the size of the annular gap. The air door adjusting device provided by the embodiment of the utility model is more uniform in air intake.

The right center impeller is stable in flow field, good in cavitation performance and small in shearing force, the right center impeller comprises a hub and blades, the hub comprises a hub body and a hub tail, the blades are suitable for being driven by the hub to rotate, and blood is conveyed to the far end of the impeller from the near end of the impeller; the hub body is of a frustum structure with the radius gradually increasing from the near end to the far end, and the hub tail is of a frustum structure with the radius gradually decreasing from the near end to the far end. The frustum-shaped hub tail part has certain flow guide and rectification effects, so that the flow velocity is reduced when blood passes through, and the pressure in a flow field is reduced; the cone is gentle and reasonable in transition, so that the blood is powerfully supported when flowing through the surface of the model, flow separation and flow separation are not easy to occur, and a flow field is smoother; the shear force in a reasonable flow field is smaller, and the hemolytic property is further improved. The impeller has the hydraulic performance and the hemolytic performance of the blood pump at the same time, and in addition, due to improvement of the cavitation performance, the impeller rotates more stably, noise is low, and the impeller is more friendly to patients.

The utility model relates to the technical field of devices for adjusting pre-deformation when steel wires are twisted into steel cords, in particular to a quantifiable adjusting needle type deformer which comprises an adjustable base, a support is arranged on the adjustable base, a wire distributing disc is arranged on the support, a plurality of wire passing holes are distributed in the wire distributing disc at equal angles, a deformation device is arranged on one side of the wire distributing disc, and the deformation device is arranged on the other side of the wire distributing disc. The deformation device comprises a plurality of cone-frustum-shaped mounting seats, the diameters of the cone-frustum-shaped mounting seats are sequentially decreased, each cone-frustum-shaped mounting seat is provided with scales, and a damping pad is arranged between every two adjacent cone-frustum-shaped mounting seats; a plurality of needle type deformation rods are arranged on the side face of each cone-frustum-shaped installation base at equal angles, and the needle type deformation rods on the adjacent cone-frustum-shaped installation bases are arranged in a staggered mode. One end of each needle type deformation rod is located in the corresponding cone-frustum-shaped installation base, and the other end of each needle type deformation rod is connected with a limiting device. The steel wire rope forming device is simple in structure, convenient to adjust, adjustable in deformation, good and uniform in steel wire rope forming and not prone to head scattering, and the quality of rope forming products is greatly improved.

A propulsor is described in which rotation of the frustum of a right circular cylinder generates thrust. Variants of this basic geometrical shape are also described that enable multiple means for propelling fluid past the propulsor.

The utility model discloses fabric shaping and stretching equipment which is provided with a fixing frame and a lifting frame, a plurality of moving plates are connected to the fixing frame and the lifting frame in a sliding mode, an unfolding mechanism for driving the moving plates to be unfolded at equal intervals is arranged, and fabric is fixed through the moving plates on the upper side and the lower side. Then the multiple moving plates are driven by the unfolding mechanism to be unfolded at equal intervals, then multiple pulling forces towards the two sides are applied to the fabric, the overall stress of the fabric is more uniform, the frustum-shaped pressing pipes are arranged on the moving plates to reduce the contact face with the fabric, and the situation that the stretching effect is affected due to the fact that the area of the pressed part is too large is prevented; and a rubber mat is fixed on the pressing pipe to prevent the fabric from being scratched.

The invention provides a pile pressing device and an operation method thereof. The pile pressing device comprises driving equipment, a clamp and a pile pressing assembly. The pile pressing assembly is connected with the tail end of the arm frame through a clamp. The clamp adaptive end is in clamping connection with the clamp; a profile steel framework is arranged in the fixture adaptive end; the tip end of the pressing pile is in an inverted cone frustum shape. Pile pressing force is directly applied from the interior of a pile core, clamping damage of a traditional clamp to the outer side of a pile body is thoroughly avoided, and the technical effects that the problem that the surface of the exposed pile body is damaged is solved, the integrity and attractiveness of the exposed face of the wall protection pile are guaranteed, and the cost caused by later appearance repairing is eliminated are achieved.

The utility model relates to a plane milling cutter, which is suitable for cutting the surface of a workpiece, and comprises a cutter head, a plurality of cutter blades and a plurality of cutter blades, the blade is assembled on the cutter head and is provided with a cutting edge part in a cone frustum shape, the cutting edge part is provided with a circular bottom surface and an annular side surface connected with the periphery of the bottom surface, and the annular side surface of the blade is used as a cutting surface for cutting the surface of the workpiece; through the design that the blade takes the annular side surface as the cutting surface for cutting the surface of the workpiece, the blade cuts the surface of the workpiece in a transverse manner, so that the workpiece can be cut into a large-arc-shaped cutting groove close to a plane by the small-size blade; the cutter has the advantages of being good in workpiece cutting flatness, high in machining speed, low in cost and long in service life.