42results about How to "Uniform traction" patented technology

The invention provides a transverse paper feeding device. The transverse paper feeding device is characterized in that a bottom paper side retaining device comprises a guide shaft, a positioning retaining plate, side beating retaining plates, a movable hand wheel and a side beating movable hand wheel; the paper feeding device comprises an air suction paper feeding device which consists of a paper feeding driven roll, a paper feeding air suction belt and a paper feeding driving roll; a pressing device comprises a pressing driving roll, a pressing air suction belt, a pressing driven roll and a plurality of upper pressing rolls; an air suction paper guide device and an upper pressing device are arranged between the air suction paper feeding device and a water applying roll, the air suction paper guide device consists of a paper guide driving roll, a paper guide air suction belt and a paper guide driven roll, the upper pressing device consists of an upper press driving roll, an upper pressing belt and an upper pressing driven roll, the upper pressing driven roll is positioned above the paper feeding driving roll, and a glue applying roll is positioned above the water applying roll; an air suction conveying device is arranged between the glue applying roll and the pressing device, and consists of the conveying driving roll, a conveying air suction belt and a conveying driven roll. The transverse paper feeding device has the advantages that the paper is supported and conveyed by the air suction belt in the whole process, the transverse paper feeding device is suitable for the longitudinal and transverse paper feeding of bottom paper, the paper conveying time is shortened, and the production efficiency is improved.

The invention discloses a vertical wire coil paying-off rack. The vertical wire coil paying-off rack comprises a support arranged vertically. A set of wire paying-off devices used for installing wire coils are arranged in the axial direction of the support, and each wire paying-off device is movably installed on the support through locking bolts. By adopting the paying-off rack, abrasion of wires is basically eradicated, the folding smoothness of the wires is greatly improved, the wires are uniformly stressed, and the condition of size decrease and damage can be effectively reduced.

The invention discloses a down-flow type anti-flow net cage, including a rectangular floating pipe positioned at the top of the net cage, wherein a cylindrical net cage with a horizontal axis is connected to the lower end of the floating pipe; an annular strengthening truss is arranged at one end of the cylindrical net cage, while a flow divider with a conical steel pipe truss structure is connected to the other end of the strengthening truss; a HDPE immersed pipe is arranged at the bottom of the cylindrical net cage along the direction parallel to the axis; the HDPE immersed pipe is filled with iron sand. Compared with the prior art, better stability is provided for water fluctuation due to the application of the conical flow divider, so that the instant pulling force extreme value of an anchor line system can become effective, the risk of dragging can be effectively reduced, and thereby the construction requirement of an anchoring device can be reduced. Compared with the prior art, the HDPE immersed pipe filled with the iron sand has the advantages of balanced traction force and good stability. And therefore, the down-flow type anti-flow net cage has the advantages of stable structure, outstanding anti-flow performance, good stability, low cost and low construction technical requirements.

The invention relates to a prefabricated building laminated slab. The prefabricated building laminated slab comprises rectangular laminated slab bodies and pouring slabs poured on the laminated slab bodies, wherein a plurality of reinforcing steel bars which are criss-crossed in the horizontal direction are arranged on the upper surfaces of the laminated slab bodies; the laminated slab bodies comprise a plurality of reinforcing steel channels fixedly connected with the reinforcing steel bars, the reinforcing steel channels are close to the end faces of the laminated slab bodies in the horizontal direction correspondingly, and the reinforcing steel bars penetrate through the reinforcing steel channels and stretch out of the laminated slab bodies; and a plurality of inserting holes allowingthe reinforcing steel bars to be inserted are formed in the reinforcing steel channels, and movable steel channels used for fixing the reinforcing steel bars inserted along the inserting holes are slidably arranged on the upper surfaces of the laminated slab bodies. The prefabricated building laminated slab has the effects that the gap between the two laminated slab bodies is reduced, the tractionforce borne by the laminated slab bodies is balanced, operation is convenient, the structural strength of the laminated slab bodies is not prone to be damaged, and the alignment process between everytwo adjacent laminated slabs is convenient.

The invention provides a scroll saw driven by electromagnets. The scroll saw comprises a machine base, a machine frame, a saw blade and a work table, the work table is connected with the machine base, the machine frame is arranged on the machine base, the inner side of the machine frame is provided with a guide rail and is provided with an arch saw frame, the upper end opening of the inner side of the machine frame is connected with the upper electromagnet, the lower end opening of the inner side of the machine frame is connected with the lower electromagnet, each electromagnet is formed by a yoke, a solenoid and an armature core, the yokes are connected with the machine frame, the armature cores are connected with the outside of the saw frame, a spring is arranged between each armature core and the corresponding solenoid in a sleeved mode, one end of each spring abuts against the bottom of the corresponding yoke, the other end of each spring abuts against the outside of the saw frame, the position, corresponding to the upper electromagnet, on the inner side of the saw frame is connected with an upper hook through a spring plate, the position, corresponding to the lower electromagnet, of the lower portion of the saw frame is connected with a lower hook, the saw blade is hung on the upper hook and the lower hook, one end of the spring plate is fixedly connected with the saw frame, the other end of the spring plate is hung on the upper hook through a round hole, the middle of the upper hook is provided with a shoulder abutting against the upper end face of the round hole, the middle of the spring plate is provided with a regulating screw, and currents passing through the solenoids are controlled by an electrical appliance. The scroll saw has the advantages that movement is stable, efficiency is high, traction force is balanced and saw teeth can be protected.

The invention discloses an optical cable spreading burying machine which comprises a travelling vehicle, a grooving device, a cable feeding device, an optical cable underground device and an earth covering device. The grooving device comprises a disc cutting device, a first hydraulic motor which drives travelling wheels or travelling crawler belts to travel is arranged on the traveling vehicle, and a second hydraulic motor which drives the disc cutting device to rotate is arranged on the grooving device. The optical cable spreading burying machine further comprises a power distribution device, the power distribution device comprises a hydraulic master pump driven by the motor of the traveling vehicle, high-pressure hydraulic of the hydraulic master pump is distributed to a hydraulic distributor of the first hydraulic motor, a hydraulic distributor of the second hydraulic motor, a first electromagnetic valve and a second electromagnetic valve, the first electromagnetic valve is arranged between the hydraulic distributor of the first hydraulic motor and the first hydraulic motor and controls the operation of the travelling wheels and the travelling crawler belts, and the second electromagnetic valve is arranged between the hydraulic distributor of the second hydraulic motor and the second hydraulic motor and controls the rotation direction of the disc cutting device. The optical cable spreading burying machine is purely controlled by hydraulic pressure, is compact and simple in structure, can travel and groove synchronously, and can achieve composite force distribution of power of the parts.

The invention relates to a prefabricated building laminated slab. The prefabricated building laminated slab comprises rectangular laminated slab bodies and pouring slabs poured on the laminated slab bodies, wherein a plurality of reinforcing steel bars which are criss-crossed in the horizontal direction are arranged on the upper surfaces of the laminated slab bodies; the laminated slab bodies comprise a plurality of reinforcing steel channels fixedly connected with the reinforcing steel bars, the reinforcing steel channels are close to the end faces of the laminated slab bodies in the horizontal direction correspondingly, and the reinforcing steel bars penetrate through the reinforcing steel channels and stretch out of the laminated slab bodies; and a plurality of inserting holes allowingthe reinforcing steel bars to be inserted are formed in the reinforcing steel channels, and movable steel channels used for fixing the reinforcing steel bars inserted along the inserting holes are slidably arranged on the upper surfaces of the laminated slab bodies. The prefabricated building laminated slab has the effects that the gap between the two laminated slab bodies is reduced, the tractionforce borne by the laminated slab bodies is balanced, operation is convenient, the structural strength of the laminated slab bodies is not prone to be damaged, and the alignment process between everytwo adjacent laminated slabs is convenient.

The invention provides a transverse paper feeding device. The transverse paper feeding device is characterized in that a bottom paper side retaining device comprises a guide shaft, a positioning retaining plate, side beating retaining plates, a movable hand wheel and a side beating movable hand wheel; the paper feeding device comprises an air suction paper feeding device which consists of a paper feeding driven roll, a paper feeding air suction belt and a paper feeding driving roll; a pressing device comprises a pressing driving roll, a pressing air suction belt, a pressing driven roll and a plurality of upper pressing rolls; an air suction paper guide device and an upper pressing device are arranged between the air suction paper feeding device and a water applying roll, the air suction paper guide device consists of a paper guide driving roll, a paper guide air suction belt and a paper guide driven roll, the upper pressing device consists of an upper press driving roll, an upper pressing belt and an upper pressing driven roll, the upper pressing driven roll is positioned above the paper feeding driving roll, and a glue applying roll is positioned above the water applying roll; an air suction conveying device is arranged between the glue applying roll and the pressing device, and consists of the conveying driving roll, a conveying air suction belt and a conveying driven roll. The transverse paper feeding device has the advantages that the paper is supported and conveyed by the air suction belt in the whole process, the transverse paper feeding device is suitable for the longitudinal and transverse paper feeding of bottom paper, the paper conveying time is shortened, and the production efficiency is improved.

The invention provides a beam end mounting method of a stay cable. The method comprises the steps of arranging a soft traction device consisting of a power mechanism and a first force transmission mechanism and hoisting the soft traction device to the lower end of a beam end steel anchor box for mounting; conveying the stay cable to make a lower anchor head of the stay cable close to the steel anchor box; adopting a second force transmission mechanism for connecting the soft traction device and the lower anchor head of the stay cable; starting the soft traction device, and conducting tractionon the second force transmission mechanism to lead out the lower anchor head of the stay cable through the steel anchor box; anchoring the lower anchor head of the stay cable, and disassembling the second force transmission mechanism and the power mechanism to complete the beam end mounting process of the single stay cable. By means of the scheme, the stability of force transmission in the beam end mounting process of the stay cable is ensured, and meanwhile the construction efficiency is improved.

The invention discloses a non-invasive uterus retractor capable of being operated with one hand. The retractor comprises a push rod, pull buckles, a fixing rod, a fixing plate, grabbing rods and connecting rods; one end of the fixing rod is provided with the fixing plate, the edge of the side, away from the fixing plate, of the outer side wall of the fixing rod is symmetrically provided with a pair of pull buckles, the four grabbing rods are hinged to the edge of the side, away from the fixing rod, of the outer side wall of the circular fixing plate through torsion springs at equal intervals,the ends, away from the fixing plate, of the grabbing rods are provided with the connecting rods parallel to the fixing plate, and a mounting groove is formed in the portion, between every two adjacent grabbing rods, on the fixing plate. According to the non-invasive uterus retractor, a piston is provided with reset springs, the fixing rod is provided with the pull buckles and the push rod respectively so that the medical staff can conveniently adjust the tightness of a connecting rope with one hand in the use process, expanding or tightening of the grabbing rods is controlled accordingly, andthe operation convenience of the medical staff is improved; the medical staff can conveniently grab the uterus for pulling through the pull buckles, so that the uterus is conveniently pulled out by the medical staff.