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 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 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 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.

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 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.

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.