30results about How to "Proper tension" patented technology

The invention discloses a method for opening and closing an intelligent bi-directional roller-shutter-type window, and relates to the field of building closing devices. The method includes the following steps that A, a window frame is divided by a stand column into two window openings, a rolling core is arranged in the stand column, one ends of two transparent-plastic flexible films are rolled to the rolling core, the free ends of the two transparent-plastic flexible films extend towards the different window openings, are wound around roller shafts and then are fixed to corresponding stand rods; the window further comprises a pulling bead and a transmitting mechanism; B, when the window needs to be closed, the pulling bead is pulled, the transmitting mechanism performs driving, and the two transparent-plastic flexible films are released through the rolling core and unfolded in the corresponding window openings; C, when the window needs to be opened, the pulling bead is oppositely pulled, the transmitting mechanism performs driving, and the two transparent-plastic flexible films are wound through the rolling core; D, a control circuit is arranged on the window. The method has the advantages that the window has the advantages that washing is easy, and others are not prone to injuries after the window is damaged; when the window is closed, the two isolated transparent-plastic flexible films are formed at the window openings, and the high sound-insulation function and the high thermal-insulation function are achieved.

The invention relates to a conveyor chain tensioner comprising a mounting plate, a tensioning bracket, a tensioning screw, set blocks, nuts, a short shaft and a chain wheel. A row of equidistant threaded holes are formed in the mounting plate; the tensioning bracket is composed of a bottom plate, two side plates and two retaining plates; two sliding grooves are formed in the bottom plate of the tensioning bracket, and the mounting plate and the tensioning bracket are connected in sliding fit; threaded holes are formed in the retaining plates at two ends of the tensioning bracket, and the tensioning screw penetrates the set blocks and the retaining plates, one nut is arranged on each side of each set block, and the tensioning screw are fixed on each set block through the two nuts; the tensioning bracket, the short shaft and the chain wheel are adjusted in position relative to the mounting plate through the tensioning screw and the nuts and are fixed through bolts. The conveyor chain tensioner has the advantages that the conveyor chain tensioner can keep proper tension of a chain so as to prevent the chain from shaking and is convenient to adjust and reliable in fixation, and accuracy and stability of conveyor operation are guaranteed.

The invention discloses a discharging roller of a spreading machine. The discharging roller comprises a cylinder for cloth winding and a rotation shaft rotationally connected with the cylinder, and the middle of the cylinder outwards protrudes and is in an arc shape. The discharging roller further comprises an expanding mechanism which is arranged in the cylinder and used for expanding the cylinder so as to reduce the curvature radius of the outer surface of the cylinder. The expanding mechanism comprises a sliding sleeve which is in sliding cup joint to the rotation shaft, and supporting rodsare hinged to the part between the sliding sleeve and the inner wall of the cylinder. The discharging roller further comprises a nut which is in threaded connection to the rotation shaft, and an ejector pipe which is in sliding cup joint to the part between the nut and the sliding sleeve. The two ends of the ejector pipe abut against the sliding sleeve and the nut correspondingly. The ends, awayfrom the sliding sleeve, of the supporting rods face the end, away from the ejector pipe, of the rotation shaft. The ends, away from the sliding sleeve, of the supporting rods incline in the directionaway from the rotation shaft. The discharging roller further comprises a fixing sleeve which is fixedly in cup joint to the rotation shaft and is used for abutting against the sliding sleeve after the sliding sleeve slides so as to prevent the supporting rod inclination direction from changing. The discharging roller further comprises an elastic rod embedded in the cylinder in the center axis direction of the cylinder, and the outer surface of the cylinder is wrapped by a soft rubber layer.

The invention discloses an automatic cutting device for tarpaulin processing, which comprises a base and a tarpaulin. A support seat is arranged on the outside of the top of the base, and a first hydraulic pressure is connected to the side of the support seat close to the vertical center line of the base. The first hydraulic cylinder is provided with a slide seat near the vertical center line of the base, and the top outside of the slide seat is connected with a second hydraulic cylinder, and the top outside of the second hydraulic cylinder is provided with a clamping plate. In the automatic cutting device for tarpaulin processing, the driven runner can be fixed on the top plate of the workbench through the connecting plate, and the outer surface of the driven runner is attached to the outer surface of the tarpaulin. Through the sliding of the tarpaulin, it can drive The driven wheel rotates. There is a circle detector inside the driven wheel, and the number of circles of the circle detector can be adjusted. When the driven wheel turns a certain number of circles, the system will send a signal to the cutting machine. Knife, so that the cutting knife cuts the tarpaulin, which enables the equipment to automatically cut the tarpaulin into equidistant lengths.

Disclosed is a cloth tensioning apparatus in an embroidering machine (A), which includes nipper units (26) to be moved forward and rearward and leftward and rightward by LM guides (18, 20), sensors (28, 30) for determining a forward and rearward movement distance of the nipper units (26), and pressure members (32) having pressure portions (32a) located inside the nipper units (26). Thereby, an embroidering operation is performed in a state wherein the nipper units (26) seize the cloth (B) while continuously applying a tension in an X-axis direction of the cloth (B). The embroidering operationis temporarily stopped if the nipper units (26) are deflected forward, and the nipper units (26) are returned in a state wherein the cloth (B) is tensioned by the pressure members (32). The nipper units (26) are again operated to seize the cloth (B) at their returned positions. As a result, a constant tension is continuously applied even in the X-axis direction of the cloth (B) during the embroidering operation.

The invention discloses a fire hose abrasion test device which comprises a connecting table, wherein a Y-direction guide shaft is arranged on the connecting table; a guide slide block A and a guide slide block B are arranged on the Y-direction guide shaft and are connected through a Y-direction moving cylinder; a support frame A is arranged on the guide slide block A; two fire hose supporting wheels are arranged on the support frame A; a first supporting plate is arranged on the guide slide block B; a second supporting plate is arranged on the first supporting plate; a grinding head support frame is arranged on the second supporting plate; an X-direction guide shaft is arranged on the first supporting plate; the second supporting plate moves along the X-direction guide shaft; an X-direction moving cylinder is arranged on the first supporting plate; a grinding head, a positioning wheel and a driving wheel are arranged on the grinding head support frame; center lines of the two fire hose supporting wheels are vertically symmetrical along a center line of the support frame. According to the device, the abrasion resistance of the fire hose can be conveniently tested on a testing machine, the device is high in structural reliability and convenient to operate, the working strength of an operator is reduced, and the testing accuracy is improved.

A banknote storage unit comprising: a first tape reel banknote storage device; a second tape reel banknote storage device; and a drive transmission means pivotable between engagement with said first tape reel banknote storage device and engagement with said second tape reel banknote storage device.

The invention belongs to the technical field of belt transmission tools, and particularly relates to a swing frame mechanism of dynamic calibration equipment. The swing frame mechanism of the dynamic calibration equipment comprises a frame body. A swing frame is arranged at the upper end of the frame body. One end of the swing frame is arranged on the frame body in a hinged joint manner. An adjusting plate is connected with a motor. The output end of the motor is connected with a belt. When the belt needs to adjust tension force, fixed screws are firstly loosened, an adjusting nut is adjusted, the swing frame is made to swing downwards and adjusted to the designated spot, the adjusting nut is locked, then a fastening screw is fixed, and the motor is adjusted to the needed position. The swing frame mechanism has the beneficial effects that the tension force of the belt can be adjusted regularly, the belt can keep the proper tension force, transmission is more stable, the structure is simple, and operation is convenient.

The invention relates to control equipment, a method, a system and an engineering machine for the retractable rope compensation of a guying device. The guying device comprises a guying mast, a guying winch and a compensation mechanism, and a steel wire rope which is led out from the guying winch is led back to the guying mast after passing by a boom pulley device on a boom device, and is connected with the compensation mechanism; the control equipment comprises a receiving device and a control device, wherein the receiving device is used for receiving the pressure of the compensation mechanism; and the control device is used for comparing the pressure of the compensation mechanism with a first set pressure scope, a first comparison result is obtained, the compensation mechanism is controlled to extend or retract according to the first comparison result, so the steel wire rope is in a tensioning state. The equipment can be used for effectively solving the problem of the too long or too short retractable rope when the speed of the guying winch retractable rope cannot follow the extension speed of a boom, and the tensioning degree of the steel wire rope is actively adjusted, so the appropriate tensioning force of the steel wire rope is kept.

The invention discloses construction equipment for emulsified asphalt materials for roads, which comprises a horizontal support frame, a traction device, and an asphalt spreading vehicle. The middle part of the horizontal support frame is provided with a wheel shaft and a wheel, and the front part of the wheel shaft is provided with an emulsified asphalt paint brush at the front part. Structure, the rear part is provided with the emulsified asphalt painting structure at the rear part, the longitudinal middle support rod is provided in the middle part of the horizontal support frame in the left and right direction, the horizontal support frame is provided with a vertical support frame, the vertical support frame is provided with a cylinder, and the cylinder connecting rod The outer end is hinged with the wheel shaft, and there are several cranks on both sides of the connecting rod. The rear part of the support frame is provided with a control box, and the control box is provided with a cylinder air circuit control valve. The invention can conveniently and quickly raise and lower the wheel axle and the wheel through the cylinder group. The construction quality and efficiency are high, and it is especially suitable for fast and efficient Working equipment for emulsified asphalt brushing operations.

The object of the present invention is a device for adjusting the tension of the traction members of an elevator, which device comprises: an elevator car (1) and a compensation weight (2), an elevator car (1) and a compensation weight ( 2) connected for its part to support the elevator car (1) by means of suspension members (4) such as ropes or belts; and the traction machine (3) with traction sheave (3a); and a traction member (5), such as a belt, adapted to convert the rotational motion of the traction sheave (3a) into motion of the elevator car (1) and compensating weight (2); and a tension control device (8), arranged to The magnitude of the tension applied to the suspension member (4) and the traction member is adjusted. The device comprises a tensioning device (9) connected to the traction member (5), and a tension control device (8) is connected to the part of the traction member (5) on the side of the compensating weight (2) relative to the traction pulley (3a) , and the tensioning device (9) is connected to the part of the traction member (5) on the side of the elevator car (1) relative to the traction sheave (3a).

The invention discloses an opening and closing method for a manual bidirectional roller blind window and relates to the field of building closing devices. The opening and closing method comprises the steps that A, a window frame is divided into two window parts by a column, a reel is arranged in the column, one end of each of two transparent plastic soft films is rolled in the reel, and the free ends of the two transparent plastic soft films extend to different window parts and are fixed to corresponding vertical rods after being wound around a roll shaft; the window also comprises a pull bead and a transmission mechanism in linkage with the pull bead; B, when the window needs to be closed, the pull bead is pulled, and the transmission mechanism drives the reel to release the two transparent plastic soft films and make the two transparent plastic soft films unfold in the corresponding window parts; C, when the window needs to be opened, the pull bead is pulled in an opposite direction, and the transmission mechanism drives the reel to roll back the two transparent plastic soft films. The opening and closing method has the advantages that the transparent plastic soft films capable of being rolled back are used as window sashes, are easy to clean and cannot easily hurt others after being damaged; when the window is closed, the two separated transparent plastic soft films are located at the window parts and have strong sound insulation and heat insulation functions.

The invention discloses a crawler belt tensioning device. The crawler belt tensioning device comprises a driving wheel and an induction wheel, the driving wheel and the induction wheel are located atthe two ends of a vehicle body truss respectively, the driving wheel is located at the end, with a smaller diameter, of the vehicle body truss, and the induction wheel is hinged to the end, with a larger diameter, of the vehicle body truss through a first connecting rod. A first air spring is movably connected between the induction wheel and the vehicle body truss, and the first air spring is located at the lower end of the first connecting rod. The lower portion of the vehicle body truss is movably connected to a load-bearing wheel group, the load-bearing wheel group is movably connected to abelt pulley, and the belt pulley is hinged to the upper portion of the vehicle body truss. A crawler belt sequentially passes through the driving wheel, the belt pulley, the induction wheel and the load-bearing wheel group to form a closed structure. As the crawler belt tensioning device is arranged, when a crawler belt vehicle passes through various obstacles, the crawler belt is tensioned in real time so that the belt does not come off or break.

A banknote storage device comprising: a first coiled banknote storage device; a second coiled banknote storage device; Move between engagements of the roll banknote storage unit.