30results about How to "Proper tension" patented technology

The invention discloses a four-section wheel-track combined intelligent obstacle-crossing robot which comprises a main body device. The main body device comprises a bottom plate, a stepping motor PLC control panel arranged on the bottom plate, a master control module, a battery, a voltage control module, a parallel port connection end and an upper housing. The main body device is provided with a wheel-type front arm capable of rotating back and forth and a front stepping motor for driving the wheel-type front arm to rotate. The main body device is provided with two rear swing arms capable of rotating back and forth. The main body device is further provided with a back servo motor for driving the rear swing arms to rotate. The outer side of the lower end of each rear swing arm is provided with a rotation base and a lower servo motor for driving the rotation base to rotate, wherein the rotation base is provided with a track module. The robot is good in obstacle-crossing performance, strong in trench-crossing capability, smooth and steady to walk, high in gravity center adjustability, suitable for more complex landform and convenient to cross obstacles; and adaptability of a robot movement mechanism to different landforms is improved.

Provided is a chain tension applicator which can play wear resistance function by dispersing and reducing load imparted from a plunger at backstop and reducing processing accuracy and processing load (needed) during component machining and assembling period. A chain tension applicator includes: a plunger 120 protruding to a drive chain; a housing 110 having a plunger slide hole 111 in which the plunger 120 forms a protrusile insert cooperation; a protruding bias spring 130 of the bias plunger 120; a pair of wedge-shaped cams 140, 140 engaged on two racks 121, 121, the racks 121, 121 are formed at an opposite position where the outer circle of the plunger 120 is divided into at least two parts. The wedge-shaped cams 140, 140 are embedded with space on a cam slide seat 112 which is gradually becoming thin and is formed on the front end side of the opening of the plunger slide hole 111.

The object of the invention is an arrangement for adjusting the tautness of a traction member of an elevator, which arrangement comprises an elevator car (1) and a compensating weight (2), which are for their part connected to support the elevator car (1) by the aid of a suspension member (4), such as a rope or belt, and also a hoisting machine (3) provided with a traction sheave (3a), and one traction member (5), such as a belt, which is adapted to transmit the rotational movement of the traction sheave (3a) into movement of the elevator car (1) and of the compensating weight (2), and also atension control means (8), which is arranged to adjust the magnitude of the tension forces exerted on the suspension member (4) and on the traction member. The arrangement comprises a tensioning means(9) connected to the traction member (5), and the tension control means (8) is connected to that part of the- traction member (5) that is on the side of the compensating weight (2) with respect to the traction sheave (3a), and the tensioning means (9) is connected to that part of the traction member (5) that is on the side of the elevator car (1) with respect to the traction sheave (3a).

The invention discloses an underwater closed circuit type traction system and relates to a traction system for providing service for working of underwater objectives. The underwater closed circuit type traction system is applied to an underwater platform and used for providing service for underwater working equipment. The underwater closed circuit type traction system comprises a track, a trolley (1) and a traction winch (2), wherein the trolley (1) can move along the track, the traction winch (2) is sleeved with a hauling cable (4), one end of the hauling cable (4) is fixedly connected to the front side face of the trolley (1) through a first reversing device, the other end of the hauling cable (4) is fixedly connected to the rear side face of the trolley (1) through a second reversing device, and the trolley (1) can reciprocate along the track under the forward rotation and reverse rotation of the traction winch (2).

The invention discloses a 3D printer based on FDM (Frequency-Division Multiplexing) technology. The 3D printer comprises a rack, a base and a Y-axis movement system, wherein the base is provided with a power supply and a controller; the controller is connected with the Y-axis movement system; the Y-axis movement system comprises a Y-axis movement guide rail and a second numerical control motor; the base is provided with a front fixed seat and a rear fixed seat; the Y-axis movement guide rail is connected with the base; the second numerical control motor is arranged on the lower part of the base and is connected with a second gear; the second gear is connected with a second synchromesh gear belt; the second synchromesh gear belt is connected with a second driven wheel and is provided with a second connection block; the second connection block is connected with an auxiliary connection plate; the auxiliary connection plate is connected with a working surface heating plate; a heating plate temperature sensor is arranged on the lower part of the working surface heating plate and is connected with the controller; the second connection block is provided with a first groove and a second groove of the connection block; the first groove is connected with one end of the second synchromesh gear belt and the second groove is connected with the other end of the second synchromesh gear belt.

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.

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.

The invention discloses an intelligent bidirectional roller blind type window, and relates to the field of building closing devices. The intelligent bidirectional roller blind type window comprises a window frame, the window frame is divided into two window bodies by a stand column, each window body is provided with a vertical rod and a roll shaft in a matched mode, a roll core is arranged in the stand column, the roll core is provided with transparent soft plastic film in a rolled mode, the transparent soft plastic film comprises two free ends, and the two free ends extend to different window bodies respectively. The intelligent bidirectional roller blind type window further comprises a power mechanism, and the two free ends of the transparent soft plastic film can be simultaneously furled in the roll core or unfolded in the window under the action of the power mechanism. The intelligent bidirectional roller blind type window further comprises a control circuit which enables the window to be automatically closed. The intelligent roller blind type window has the advantages that the transparent soft plastic film which can be furled is utilized to serve as a window sash and has the advantages that inner side cleaning and outer side cleaning are easy and others are not prone to being hurt; when the window is closed, two layers of the transparent soft plastic film which are separated from each other are formed in the window, and the transparent soft plastic film has stronger sound insulation and thermal insulation functions; the window can be automatically closed during wind blowing or raining, and the lives of people are more convenient.

The invention discloses a film stripping and rewinding machine which comprises a main motor, an intermediate driving shaft, a winding magnetic powder clutch, a press arm fulcrum shaft, a compacting cylinder, a winding shaft, a stretching guide wheel, a winding driving guide wheel, a winding inflatable shaft, a discharging inflatable shaft and a discharging magnetic powder brake controller, wherein a raw material is wound on the discharging inflatable shaft and is then respectively wound on the winding shaft and the winding driving guide wheel after bypassing the winding inflatable shaft to the stretching guide wheel; the discharging magnetic powder brake controller is connected with the discharging inflatable shaft in an engaging and disengaging control manner; the main motor is sequentially connected with the intermediate driving shaft and the winding magnetic powder clutch in a driving manner; the winding magnetic powder clutch is connected with the winding inflatable shaft in an engaging and disengaging control manner; the press arm fulcrum shaft is connected with the compacting cylinder in a driving manner; and the winding driving guide wheel is arranged on the press arm fulcrum shaft and is connected with the winding inflatable shaft in an engaging and disengaging control manner. By means of the film stripping and rewinding machine, the stripping and winding operation can be automatically finished by machinery, the working efficiency is improved, and the production cost is reduced.

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 tensioning chain type conveyor. The tensioning chain type conveyor comprises a conveying pipeline. The conveying pipeline is provided with a feed port and a discharge port. The two ends of the conveying pipeline communicate with each other through a drive box. The conveying pipeline is internally provided with extensible and retractable pipe joints which are arranged in pairs, the two extensible and retractable pipe joints which are arranged in pairs are arranged on the two sides of the drive box and are arranged in parallel. Each extensible and retractable pipe jointcomprises an outer sleeve, wherein the two ends of the outer sleeve are provided with extensible and retractable pipes in an insertion manner correspondingly, and an adjusting bolt is arranged between each extensible and retractable pipe and the outer sleeve. By adopting the tensioning chain type conveyor, tensioning between a pipe chain wheel and a conveying pipe chain can be kept conveniently,and the conveying pipe chain and the conveying pipeline can coordinate with each other well.

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 discloses a movable clamped anti-shock bracket. The movable clamped anti-shock bracket comprises a supporting cross beam, draw bars and corner adapting pieces. A clamping sleeve combinedpart is connected between each corner adapting piece and the corresponding draw bar and comprises a sleeve seat and a clamping head, wherein the sleeve seat is a flat pipe body, the two sidewalls ofan inner cavity of the sleeve seat are provided with inner helical teeth; the clamping head comprises two symmetric elastic rod jaws; the outer end of each rod jaw is provided with an outward expansion clamping head; and the expansion clamping heads are inserted into the sleeve seat and can be clamped to the inner helical teeth through expansion force. When combined for use, the special tool and the clamping sleeve combined part can providing supporting for multi-angle supporting and drawing. The clamping sleeve combined parts can be unidirectionally pushed in, operation is easy and convenient, and the manufacturing cost is low. The clamping heads of the clamping sleeve combined parts are inserted into the corresponding sleeve seats, so that tensile fore and jacking force serve as counter-acting force, and the anti-shock stability of the movable clamped anti-shock bracket is improved.

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 relates to a cloth drying device which includes a heating box, a ventilation plate and a drying box. The drying box is arranged above the heating box, the heating box and the drying boxare connected through the ventilation plate, the top of the inner wall of the heating box is provided with a fixed block, an electric heating pipe is installed on the fixed block, the electric heatingpipe is electrically connected to an externally-provided control panel, the bottom of the heating box is provided with a fan, an air inlet of the fan is located in the exterior of the heating box, anair outlet of the fan is located inside the heating box, and the fan is electrically connected to the externally-provided control panel; and the air outlet of the fan is located below the electric heating pipe, a cloth inlet slot is formed in the left end surface of the drying box, a cloth outlet slot is formed in the right end surface of the drying box, cloth guide rollers are arranged between the inner walls of the front and back ends of the drying box, cloth guide wheels are arranged on the cloth guide rollers, and the upper end face of the drying box is provided with an air outlet plate.The device is high in practicability and high in drying efficiency.

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.

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 invention relates to the technical field of stripping of electric wires and cable, and in particular relates to a multifunctional cable stripping machine, which comprises a rack, a motor, a cutting unit, a guiding unit, a cutting unit height adjusting mechanism, a guiding unit height adjusting mechanism and an input cable adjusting unit, and is characterized in that a tensioning adjusting mechanism comprising a driving gear, a driven gear and a tensioning unit is arranged, wherein the driving gear is driven by the motor, and the driving gear, the driven gear and the tensioning unit are connected by a transmission belt to form a transmission structure. The multifunctional cable stripping machine has the advantages of being capable of cutting on two sides, good in stripping effect and wide in stripping range.

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).

Disclosed is an efficiency-improved bicycle with energy-accumulating and vibration-absorbing, comprising a frame. A front wheel and a handle are arranged on the frame; a central shaft, an oval main wheel disc and a footplate are arranged at the lower part of the frame. The invention is characterized in that a shaft seat and a transmission shaft are arranged at the upper rear part of the frame; an eccentric wheel and a transmission wheel are arranged on the transmission shaft; the eccentric wheel is connected with the main wheel disk by chain; a rear wheel frame is hinged with the shaft seat; a rear wheel is arranged on the rear wheel frame; a flywheel is arranged on the rear wheel; the flywheel is connected with the transmission wheel by chain; a vibration-absorbing spring is arranged between the rear wheel frame and the frame. The invention has the advantage that the up and down as well as back and forth vibration absorbing can be realized; the foot pedal vibration can be avoided when the rear wheel meets obstacle, thereby making the riding smooth and comfortable; the effective time of doing work is lengthened to increase the treading efficient; the tightness change of the chain is counteracted to make the chain in proper tense at all the time; the main wheel disk dimension is reduced to make the transmission ratio between the main wheel disk and the flywheel meet the human engineering principle, and to achieve an effortless and more comfortable treading.

The invention provides a thermal conductivity testing device for an advanced inorganic non-metallic material, which comprises supporting legs, a fixing frame, a testing frame, a control panel, a display screen and a folding and unfolding centering mechanism, the folding and unfolding centering mechanism is arranged at the upper end of the fixing frame, and a pushing mechanism drives a moving plate to move towards the upper end; the moving plate pushes the bearing rod and the bearing block to swing, the placing plate moves towards the front end of the testing frame, then the material is placed on the inner side of the placing plate and is centered and positioned through the four-corner positioning mechanism, then the pushing mechanism drives the moving plate to move towards the inner side of the testing frame, and then the testing frame tests the thermal conductivity of the material, and the advantage that the materials can be rapidly placed and centered and positioned is achieved.