49results about How to "Uniform tension distribution" patented technology

An automatic balance regulating system and method of a hanging scaffold for vertical shaft construction is particularly suitable for a winch control system under control of PLC (programmable logic controller) and with variable frequency and regulable speed. The automatic balance regulating system comprises tension sensors arranged on suspension steel wire ropes, an attitude angle sensor installed on the hanging scaffold, a signal acquisition card and a PLC controller which is arranged in a winder chamber; PLC controller acquires signal of attitude angle of the hanging scaffold and signal of the tension of the steel ropes in real time through the attitude angle sensor and the tension sensors respectively, calculates length difference between the length of each of the four steel ropes and the average length thereof, as well as tension difference between the tension of each of the four steel ropes and the average tension thereof, then calculates regulating variables of rotating speed of four winches according to principle that length of each of the four steel ropes is closer to the average length at the same time, and tension of each of the four steel ropes is closer to the average tension at the same time, and furthermore drives the winches to regulate. According to the invention, the automatic balance regulating system can automatically regulate the hanging scaffold from an inclined pose to a horizontal state, and the distribution of tension of steel ropes from a non-uniform state to a balanced state.

A ball-and-socket joint has a housing, a ball pivot (3) mounted pivotably in the housing, and a sealing bellows (1), which is fastened to the housing and is mounted on the ball pivot (3) slidably via a sealing ring (4) provided with two legs (5, 6). A first leg (5) of the two legs (5, 6) is in contact with the ball pivot (3) under tension and the second leg (6) meshes with the wall of the sealing bellows (1). The second leg (6) is, furthermore, fastened in an anchoring ring (7) arranged at least partially in the wall of the sealing bellows (1).

The present invention provides a tension control device capable of ensuring that the tensile force is nearby constant value. Said tension control device includes the following several portions: machine frame and warp beam flange, vibrating roller, fixed roller, brake wheel, brake-and-clutch lining, spring, two swinging arms and rotary arm which are placed on the machine frame and tension regulation device. Besides, said invention also provides the working principle of said tension control device and its concrete operation method.

The invention discloses a cutting device suitable for adjustment of a diamond wire mesh and a cutting method, and belongs to the field of photovoltaic products. According to the cutting device, the cutting wire mesh is arranged between two wire guiding wheels, a plurality of crystal rods are fixedly mounted on a crystal holder, edge cutting gaps are formed in the first end and the tail end, at thewire guiding wheels, of the cutting wire mesh correspondingly, the two edge cutting gaps correspond to the edge of the left side of the crystal rod located on the left side, and the edge of the rightside of the crystal rod located on the right side correspondingly, and a first diamond wire at the wire inlet end and a first diamond wire at the wire outlet end of the cutting wire mesh are arrangedwith the corresponding crystal rods in a staggered mode. The method comprises the steps that the crystal holder moves downwards, thus all the crystal rods descend at the speed of 2.0-2.2 mm/min, allthe crystal rods start to be cut after making contact with the cutting wire mesh, and the first crystal rod, the second crystal rod and the third crystal rod are cut simultaneously through the cuttingwire mesh. The first wire at the wire inlet end and the first wire at the wire outlet end of the cutting wire mesh can be prevented from being broken; and by adjusting the length of the cutting gaps,the crystal rods of different lengths can be quickly switched to be cut.

The invention discloses a cloth feeding method for a digital and flat screen integrated machine. The method belongs to the technical field of textile printing. The method enables the nozzle group of the digital printing machine to scan the effective width of the inkjet in a single scan, and the scraper of the flat screen printing machine to scrape once. The printing width, the intermittent positioning width of the printing guide belt, and the cloth feeding length of the A-type unwinding device are consistent. The steps of the cloth feeding method of the digital flat screen integrated machine are as follows: the gray cloth enters the first cloth guide roller from the A-type unwinding device, Then go through the second cloth guide roller, the third cloth guide roller and the angle adjustment roller, then to the first wire dividing roller, the edge correction device, then to the second dividing roller, the fourth cloth guiding roller, the fifth cloth guiding roller, And then to the floating press roller; due to the large contact area and long time of the floating press roller, the tension distribution of the gray fabric on the surface of the guide belt is even and the flatness is good, which greatly improves the printing quality.

The invention provides a mask plate and a making method thereof. The mask plate comprises a graph layer and a stretching layer, a first opening is formed in the graph layer, the stretching layer comprises a stretching portion and two clamping portions, the stretching portion is arranged on a first face of the graph layer, a second opening is formed in the stretching portion, orthographic projection of the second opening on the first face of the graph layer completely covers that of the first opening, and the two clamping portions respectively protrude from two opposite sides of the first faceof the graph layer. Inside stress uniformity can be improved, and mechanical strength is improved, so that wrinkles can be reduced.

The invention discloses an electromagnetic clutch which can prevent slipping. The electromagnetic clutch comprises a first rotating member, a second rotating member, a sucker arranged relative to the first rotating member and an excitation coil arranged on the first rotating member and is characterized in that at least three elastomers are connected between the sucker and the second rotating member, one end of every elastomer is connected with the sucker, and the other end of every elastomer is connected with the second rotating member, the first rotating portion is provided with contact portions, and the first rotating member sucks the sucker through the excitation coil, so that when the sucker rotates relative to the second rotating member, the elastomers achieve radial deformation and are in contact with the contact portions of the first rotating member to generate friction which can prevent slipping of the sucker and the first rotating member.

The invention relates to an ultrasound horn comprising a fixing section (1a), a sealing section (1c) and a transfer section (1b) extending therebetween, one or more elongate recesses (3, 4) being formed at least in the transfer section (1b), and said recesses (3, 4) extending in a direction (A) between the fixing section (1a) and the sealing section (1c). Said recesses (3, 4) have a rounding-off encompassing, along the rounding-off, at least a first portion (5a, 7a) with a first radius of curvature, a second portion (5b, 7b) with a second radius of curvature and a third portion (5c, 7c) with a third radius of curvature. The invention also relates to a novel forming of the transfer section (1b) and recesses (9, 10) at the ends of the sealing section (1c).

A wire-feeding mechanism for a medium-speed wire cutter comprises a wire storage drum, an electrode wire, a frame and a guide wheel disposed on the frame. The electrode wire is wound on the wire storage drum and the guide wheel. A guide rail mechanism is connected to the frame, a tension device is connected to the guide rail mechanism and the tension device slides along the guide rail mechanism. The tension device comprises a balancing weight, a balancing weight support and a tension wheel, wherein the balancing weight is disposed on the balancing weight support and the tension wheel is disposed at the end of the balancing weight support. The wire feeding mechanism is simple in structure, reasonable in design, low in manufacture cost, stable in operation, can control tension of the electrode wire effectively, no shaking or deformation of the electrode wire occurs, tension is distributed evenly at each support of the electrode wire, so that machining precision of workpieces are increased and guaranteed.

An articulated connection (1) can be used to transfer a steering movement to a vehicle wheel. The articulated connection can include an axle journal (2) and a steering arm (3). The axle journal (2) can be configured to be coupled to the wheel. The steering arm (3) can be configured to receive and transfer the steering movement to the axle journal (2). The steering arm (3) can be bendable so as to elastically deflect with respect to the axle journal (2). According to the invention, the steering arm (3) can be elastically deflect in a curved plane (A). In the embodiment, a curved arm portion (9) has a rectangular cross section which has a height (b) vertical to and extending along the curved plane (A), and a width (c) extending in the curved plane (A); the height (b) of the rectangular cross section is greater than the width (c).

The invention discloses a circular screen head of a circular screen printer. The circular screen head comprises a circular screen, a transmission side circular screen head body and a pump side circular screen head body. Two or more oil cylinders, a pump side screen head bearing seat, a pump side screen heat shaft bushing and an injecting oil cylinder connected with all the oil cylinders are arranged in the pump side circular screen head body. The telescopic ends of all the oil cylinders are connected with the pump side screen head bearing seat. The pump side screen head bearing seat is connected with the pump side screen head shaft bushing through a matched circular screen bearing. The telescoping direction of all the oil cylinders is parallel to the axis of the circular screen. The pump side screen head shaft busing is connected with the other end of the circular screen and is coaxial with the circular screen. The moving direction of the pump side screen head shaft bushing is consistent with the axial direction of the circular screen. The circular screen head has the advantages of being simple in structure, reasonable, ingenious in design, easier to control and the like.

The invention provides a tightening mechanism for wafer cleavage, a film tightening assembly and a film tightening method, and belongs to the technical field of cleavage. The tightening mechanism for wafer cleavage comprises: a base and four jacking blocks; the front surface of the base is used for placing a film tightening frame; the four jacking blocks are arranged at four corners of the front face of the base at intervals; the jacking blocks are arranged on the base in a driven and sliding mode; the jacking blocks have a first state of being close to the center of the base and also have a second state of being far away from the center of the base; and the jacking blocks are suitable for being propped against the film tightening frame. According to the tightening mechanism for wafer cleavage, the position and the shape of the film tightening frame are fixed through switching of the jacking blocks between the first state and the second state, and then a cutting-up film is bonded to the film tightening frame; and only one worker is needed to easily complete the process, manpower is saved, and the working efficiency is improved.

The invention discloses a servo control system for a netting machine. The servo control system comprises a main motor, an encoder, a tension sensor and a let-off servo motor, wherein the main motor is used for driving a main shaft to continuously rotate; the encoder is used for detecting the rotation angle of the main shaft; the tension sensor is used for detecting an actual tension value of a warp wound on a let-off shaft; the let-off servo motor drives the let-off shaft to rotate; and within each work cycle, the controller lastingly receives a detection signal of the encoder, controls the let-off servo motor to work in the manners as follows: when the main shaft is at the position of zero degrees, the let-off servo motor drives the let-off shaft to begin to rotate until the let-off shaft rotates the selected angle alpha i; and when the main shaft rotates to 180 degrees, the tension sensor detects an actual tension value, the controller compares the actual tension value with a tension set value, and sends out a next control signal according to the comparison result, and the let-off shaft rotates the selected angle alpha i+1 in the next work cycle. According to the servo control system for the netting machine, adjusting and weaving processes of the let-off value are collaboratively carried out; and uniform tension distribution of the fabric is ensured.

The invention relates to a crease-resistant carrier roller device in a cold-rolled precise strip steel heating furnace. The device comprises a furnace body, wherein strip steel penetrates through the furnace body, carrier rollers which are arranged in an upper-and-lower alternating manner are installed on the strip steel, connecting shafts are mounted at two ends of each carrier roller, the connecting shafts extend out of two sides of the furnace body to be installed on lifting frames and connected with a main motor installed on one side surface of the furnace body, the lifting frames are symmetrically arranged on guide rails of fixed frames on left and right sides of the furnace body and move up and down along with the guide rails, lifting mechanisms are mounted on the fixed frames to control the lifting frames to move up and down, the lifting mechanisms on the left and right sides of the furnace body are connected with two ends of a transmission shaft respectively to rise and fall synchronously, and the lifting mechanisms on two sides are connected with lifting motors and rotating handles respectively and adjust heights of the lifting frames through the lifting motors or the rotating handles. According to the device, the carrier rollers are arranged in the heating furnace, the strip steel is prevented from drooping, and the tension of the strip steel can be divided into multiple segments under the action of the carrier rollers, so that the distribution of the tension of the strip steel in the width direction is more uniform, and the probability of cramps is decreased.

The invention belongs to the technical field of glass production industry and particularly relates to a silk screen production device. The silk screen production device comprises a support plate, a driving mechanism and a clamping mechanism used for clamping silk screen cloth, wherein a silk screen frame positioning area is arranged at the first end of the support plate; the clamping mechanism isin sliding connection with the support plate and is adjacent to the silk screen frame positioning area; the driving mechanism is fixedly mounted on the second end of the support plate; the driving endof the driving mechanism is fixedly connected with the clamping mechanism so as to drive the clamping mechanism to move close to and away from the silk screen frame positioning area. According to thesilk screen production device, the silk screen cloth in tightening state is adhered to a silk screen frame in a production process of a silk screen plate; the adhesion quality of the silk screen cloth and the silk screen frame is greatly improved; the size of the tension of the silk screen cloth is adjusted by only adjusting the movement distance of the driving mechanism; the silk screen production device is simple and convenient to operate; the silk screen printing effect of the glass is improved.

The invention discloses a filter stick suction resistance stabilizing device, which comprises a lifting device used for perfroming lifting movement; a tow traction device used for applying traction force to the tows output by a tow feeding device; a tow buffer device comprising an arc-shaped tow storage groove extending downwards from the bottom of the tow traction device, wherein at least one buffer stop lever is fixed to the inner side of an arc-shaped tow storage groove, and a gap allowing tows to penetrate through is formed between the buffer stop lever and the arc-shaped tow storage groove; a tow supporting frame, wherein the first end of the tow supporting frame is installed on a machine base of the filter stick forming device, the second end of the tow supporting frame extends to the position above the tow traction device, and tows pulled out by the tow traction device penetrate through the tow buffering device, then extend upwards, bypass the second end of the tow supporting frame and then are conveyed to a feeding port of the filter stick forming device. According to the invention, balanced tension distribution and consistent tow density in the tow conveying process can beensured, so that the filter stick processing quality is improved.

A torsion cross beam having a torsion cross beam profile in which the insert element is inserted into an end region of the torsion beam profile to form a closed cross-sectional space, wherein the insertion element is directed at the end of the longitudinal center of the torsion cross beam to form an abutment region of the torsion cross beam profile so as to fit the profile base of the torsion cross beam profile in the direction towards the end; at least in the abutment area of the torsion cross beam profile against the base of the profile, the profile base has a first cross-sectional space; the cross-section of the first cross-sectional space is curved and has a curvature greater than zero; the profile base has a curved cross-sectional space in the abutment region, and the torsion cross beam together with the insertion element form a substantially quadrilateral second cross-sectional space in the end region; and when viewed in the longitudinal direction, the torsion cross beam profile has a transition zone between the abutment region and the free end of the torsion cross beam.

The present invention relates to a method for preparing a polyurethane support pad, the method comprising the steps of: wet-coagulating a resin composition comprising a polyurethane resin and a DMF solvent; and dipping the wet-coagulated product in an aqueous solution comprising an acid catalyst and a base catalyst. According to the present invention, it is possible to provide a polyurethane support pad capable of showing low hardness, excellent compressibility and the like by uniformly forming long and large pores inside the prepared pad, showing more uniform thickness, pressure distribution, tension distribution or the like all over the pad, and thereby implementing more uniform and efficient polishing.