32results about How to "Realize length measurement" patented technology

The invention discloses a continuous casting billet online weight fixing system. The continuous casting billet online weight fixing system comprises continuous casting billets, a flame cutting device and a weight measuring device, the flame cutting device is used for cutting the continuous casting billets, and the weight measuring device is used for measuring the weights of the continuous casting billets. The weight measuring device comprises a computer, a length measuring module, a width measuring module and a thickness measuring module, wherein the length measuring module, the width measuring module and the thickness measuring module are electrically connected with the computer and used for measuring the lengths, the widths and the thicknesses of the continuous casting billets correspondingly. The computer calculates the real-time weights of the continuous casting billets by combining the measured sizes of the continuous casting billets according to the density information, obtained in advance, of the continuous casting billets and sends the real-time weights to the flame cutting device for fixed weight cutting of the continuous casting billets. The length measuring module comprises a laser range finder used for measuring the level at which the flame cutting device arrives at an original position so as to compensate and correct the measured lengths of the continuous casting billets. The continuous casting billet online weight fixing system can accurately calculate the real-time weights of the continuous casting billets for fixed weight cutting of the continuous casting billets, and therefore the weight deviation of the cut continuous casting billets is stabilized within an allowable range, and the requirement of efficient continuous casting production can be met.

The invention provides an intelligent type power cable emergency recovery vehicle which is used for improving the working efficiency when recovery work is carried out on a communication cable. Rails are arranged on the left and right sides of a vehicle body respectively; a lateral vehicle plate is mounted between the rails in a sliding manner; a lateral vehicle plate driving mechanism for driving the lateral vehicle plate to move up and down is arranged between the lateral vehicle plate and the vehicle body; a new cable loading and unloading assembly is arranged on the rear side of the vehicle body, and mainly comprises a supporting arm, a supporting plate, a first loading and unloading oil cylinder, a second loading and unloading oil cylinder and a clamping mechanism; the supporting arm is hinged onto the supporting plate; the first loading and unloading oil cylinder is arranged between the supporting plate and the supporting arm; a U-shaped frame is arranged at the top of the supporting arm; a clamping block is hinged to the left end of the U-shaped frame; a clamping mechanism for driving the clamping block to swing is arranged between the clamping block and a clamping arm; a supporting plate fixing mechanism is arranged between a positioning hole of the supporting plate and the vehicle body; a waste cable recycling assembly is arranged on the left side of the vehicle body or / and the right of the vehicle body; and a hoisting assembly is arranged in the middle of the vehicle body. With the adoption of the intelligent type power cable emergency recovery vehicle, the physical labor of workers can be greatly alleviated.

The invention discloses a cable divider double-disc automatic take-up device. The cable divider double-disc automatic take-up device comprises a paying off mechanism and a take-up mechanism which is arranged at the cable outlet end of the paying off mechanism. The take-up mechanism comprises two take-up discs and two electromagnetic clutches, and the two electromagnetic clutches are correspondingly in drive connection with the two take-up discs respectively and in drive connection with a take-up motor through a drive mechanism. According to the cable divider double-disc automatic take-up device, the two electromagnetic clutches which are in drive connection with the take-up motor to control the two take-up discs respectively, only one take-up disc moves at one time, after a preset condition is achieved, the two take-up discs are switched by switching the two electromagnetic clutches, and uninterrupted continuous operation is achieved. The cable divider double-disc automatic take-up device is simple in structure, convenient to control and capable of greatly improving working efficiency.

The invention relates to an ultrasonic array composite imaging method for the quantitative evaluation of plate structure cracks and belongs to the field of nondestructive detection. By carrying out omnifocal imaging and polarity-coherence imaging on a Lamb wave signal which is received by an ultrasonic transducer array, integrating the omnifocal imaging technology with the polarity-coherence imaging technology to obtain a composite imaging technology, carrying out omnifocal vector imaging on the basis of omnifocal imaging, determining the positions of defects according to the energy intensity of a reflected characteristic signal, and calculating the directions of the defects according to the directions of vectors in a vector graph, the directions of cracks can be identified effectively.

The invention provides a continuous rail occupation checking system based on a fiber bragg grating sensing technology. Sufficiently dense fiber bragg grating sensors are paved along a rail, and the fiber bragg grating sensors realize continuous rail occupation checking by measuring pressure strain generated by vehicle wheels on the occupied rail. Through the special packaging and design of the sensors, the sensing range of each sensing point can be enlarged to the maximum extent. Through the reasonable arrangement of the sensors, the generation of dead segments can be avoided, and the continuous rail occupation checking is realized. The checking system is not influenced by the external using environments such as lightning, traction current, rail transmission parameters, track bed resistance and wheel rail contact resistance. The continuous rail occupation checking system does not need to pave cables, saves the investment, and has a good anti-theft effect. Through the adoption of the continuous rail occupation checking system, a relay does not need to be provided separately; indoor equipment is reduced; the engineering investment is reduced; and the problem of high cost of the existing rail occupation checking equipment is solved. Moreover, an optical cable is fixed by a clamping tool, so that damage to the rail is reduced, and convenience is brought to the construction.

The invention discloses an automobile transmission shaft length detection device with an elastic element. The automobile transmission shaft length detection device comprises a base, a sliding rail, a fixed plate, a movable plate, cylinder clamping devices, the elastic element, a motor driving device, a force sensor and a supporting device. The sliding rail is fixed to the upper portion of the base and provided with the fixed plate and the movable plate, the fixed plate is fixed to one end of the sliding rail, the bottom of the movable plate is provided with a sliding block matched with the sliding rail, and the motor driving device is fixed to the sliding rail. The elastic element is fixed to the bottom of the movable plate, one end of the force sensor is connected with a motor head connected with the motor driving device, and the other end of the force sensor is connected with the elastic element. The upper portion of the fixed plate and the upper portion of the movable plate are provided with the cylinder clamping devices for clamping the two ends of a to-be-measured automobile transmission shaft, and the supporting device is arranged on the sliding rail between the fixed plate and the movable plate. The problem that an ordinary motor cannot guarantee force stability in the automobile transmission shaft length detection process is solved, the accuracy of measurement results is improved, and the production cost is reduced.

The invention discloses a pipe detection device which comprises a base, sliding rods are symmetrically arranged on one side of the base, graduated scales are arranged at the top ends of the sliding rods, a first connecting plate is arranged between the two sets of sliding rods, a limiting mechanism is arranged on one side of the first connecting plate, and a box body is arranged on one side of the top end of the base. A threaded rod extending into the box body is arranged at the top end of the box body, a movable cylinder is arranged at the bottom end of the threaded rod, a second connecting plate movably connected with the movable cylinder is arranged at the bottom end of the movable cylinder, a locking mechanism is arranged at the bottom end of the second connecting plate, and scale rods are symmetrically arranged in the box body. The pipe length measuring device has the advantages that the sliding rod is moved forwards and matched with the limiting mechanism to enable the two sets of limiting check blocks to be close to each other in an arc shape and to be tightly connected, when the sliding rod is moved reversely, the limiting check blocks can make contact with one end of a pipe, meanwhile, the graduated scale is arranged at the top end of the sliding rod and matched with scale teeth to measure the length of the pipe, operation is easy and clear, and accuracy is high.

The invention relates to the technical field of area measurement, and particularly discloses a farming area measuring device, which comprises a chassis, a fixed column, a fixed plate, a fixed disc and a fixed cover, and is characterized in that a plurality of first insertion rods are fixed at the bottom of the chassis, each first insertion rod is provided with a reinforcing assembly, and the reinforcing assembly comprises an electric push rod fixed at the bottom of the chassis; according to the invention, through designing a plurality of first insertion rods which are arranged in a triangular manner, arranging a reinforcing assembly on each insertion rod, and cooperating with a base plate and a stable insertion needle at the bottom of the base plate, the whole device can be effectively and stably placed on a farmland, so that a worker can conveniently measure the farmland area by using a tape disc; the whole measurement process is simple to operate and convenient to use, the stability of the device is high, and the problem that the final measurement result is not accurate enough due to poor stability of the device can be effectively solved.

The invention discloses a method and device for measuring the length of an automobile transmission shaft under constant pressure.The method comprises the steps that the two ends of the automobile transmission shaft to be measured are gently grabbed for centering at first to ensure that an axle tube of the automobile transmission shaft to be measured and the axis of a telescopic sleeve are located on the same straight line, an alternating current servo motor is operated in a torque mode, two limiting baffles on a fixed block and a movable block are driven to compress the two end faces of the automobile transmission shaft to be measured, a magnetic railing ruler is utilized for measuring the distance between two reference faces making contact with the two end faces of the automobile transmission shaft to be measured, the length of the automobile transmission shaft to be measured under the set force value is obtained, and therefore whether the length of the automobile transmission shaft to be measured is qualified or not is judged.The device is simple and compact in mechanism, low in production cost, small in occupied area and accurate in measuring result.

The invention discloses a length measurement method, device and equipment in online education. The method comprises the steps of: adding a ruler tool in an online education platform in advance, and displaying the ruler tool on a graphic editing interface; when it is detected that a user enters the graphic editing interface of the online education platform, obtaining a measurement instruction, and dragging the ruler tool to the graph position of a to-be-measured graph; and measuring the length corresponding to the to-be-measured graph, and displaying a measurement result. According to the embodiment of the invention, distance test operation can be instrumented, in the teaching process, if a scene (such as a 2D image and a 3D image) needing distance measurement appears, only the tool needs to be dragged to the position where distance measurement is needed, the system can automatically execute distance measurement operation, and length measurement in the online teaching process is achieved.

The invention discloses a length measuring device of a loom. The length measuring device comprises a rack, wherein the rack is provided with a loom main shaft, a mechanical length measuring mechanism and an electronic length measuring mechanism, the mechanical length measuring mechanism comprises a length measuring wheel, and the length measuring wheel is arranged on the rack through a length measuring wheel seat; the rack is also provided with a transmission mechanism which is used for transmitting the power of the loom main shaft to the length measuring wheel; the electronic length measuring mechanism comprises an electronic length measurer and a pressing wheel, the pressing wheel is positioned above the length measuring wheel, a yarn flying gap is formed by the match of the pressing wheel and the length measuring wheel, the electronic length measurer is positioned above the pressing wheel, the inner part of the electronic length measurer is provided with an encoder which rotates synchronously with the loom main shaft, and the bottom part of the electronic length measurer is provided with an electromagnetic needle directly facing the pressing wheel. According to the length measuring device disclosed by the invention, the structure is simple, the operation is easy, the length measurement of yarn is realized by adopting a matching mode of the electronic length measuring mechanism and the mechanical length measuring mechanism, and the length measuring can be more accurate.

The invention relates to application of an elastic conductor in the technical field of measurement rulers, the property that the impedance changes in the deformation process of the elastic conductor is used, and the to-be-measured length value is obtained through detecting the elastic impedance. Besides, the invention provides an electronic measurement ruler which comprises the elastic conductor,a connector and a controller; the controller is formed by an impedance measurement unit, a control unit, a power supply unit, a display terminal and an operation terminal; two ends of the elastic conductor are connected with the connector, and an electric loop is formed under the power supply situation; under the action of the control unit, the impedance measurement unit measures the impedance ofthe elastic conductor and displays the impedance on the display terminal. The electronic measurement ruler is simple in structure, because the elastic conductor can perform of deformation such as multiple times of stretching, reversing and folding, length measurement of irregular objects can be realized, the electronic measurement ruler has the advantages that the range is large, the accuracy is high, the ruler is portable, intelligent and not easy to damage, and the electronic measurement ruler has a good application prospect in the electronic measurement ruler aspect.

The invention provides a system for producing the heat-insulation and refractory material by using the coal gangue calcined material. The system comprises a furnace apparatus, a thread throwing apparatus, a cotton collecting apparatus, a supporting and conveying apparatus, a needling apparatus, a drying apparatus, a shaping and edge-cutting apparatus, a metering and cut-off apparatus and an automatic blanket rolling apparatus. The metering and cut-off apparatus comprises a wheeled range finder, a cutter and a metering and cutting controller. A stepping wheel of the wheeled range finder is placed on a heat-insulation blanket on a transmission belt. The cutter and the metering and cutting controller are fixedly arranged on a support frame. The metering and cutting controller is electrically connected with the wheeled range finder and the cutter. Compared with existing technical schemes in the prior art, the metering and cut-off apparatus is additionally arranged. In this way, the effects of length measurement, automatic cut off, no manual and individual measurement and separate cut off are realized during the conveying process of the heat-insulation blanket. Therefore, the labor force is saved, and the metering mode is a more convenient metering mode. Meanwhile, metering results are more accurate.

The invention discloses an automobile transmission shaft length detection device with an elastic element. The automobile transmission shaft length detection device comprises a base, a sliding rail, a fixed plate, a movable plate, cylinder clamping devices, the elastic element, a motor driving device, a force sensor and a supporting device. The sliding rail is fixed to the upper portion of the base and provided with the fixed plate and the movable plate, the fixed plate is fixed to one end of the sliding rail, the bottom of the movable plate is provided with a sliding block matched with the sliding rail, and the motor driving device is fixed to the sliding rail. The elastic element is fixed to the bottom of the movable plate, one end of the force sensor is connected with a motor head connected with the motor driving device, and the other end of the force sensor is connected with the elastic element. The upper portion of the fixed plate and the upper portion of the movable plate are provided with the cylinder clamping devices for clamping the two ends of a to-be-measured automobile transmission shaft, and the supporting device is arranged on the sliding rail between the fixed plate and the movable plate. The problem that an ordinary motor cannot guarantee force stability in the automobile transmission shaft length detection process is solved, the accuracy of measurement results is improved, and the production cost is reduced.

The invention discloses a continuous vehicle length measuring system based on single-line laser radars and a measuring method thereof.The continuous vehicle length measuring system comprises three single-line laser radars, two width and height radars (1) are arranged on a width and height radar portal frame (3), the continuous vehicle length measuring system based on the single-line laser radars is used, the width and height radars (1) judge whether a vehicle enters or leaves the width and height radar portal frame (3), and the width and height radars (1) determine whether the vehicle enters or leaves the width and height radar portal frame (3). The width and height radar (1) triggers a length measurement signal when a vehicle tail passes through the width and height radar portal (3), length measurement of two vehicles running at a small interval is achieved in cooperation with a software algorithm, real-time measurement of vehicle contours can be completed when the vehicles pass through a detection area, and contour data of the vehicles are obtained. The problems of inaccurate measurement data and missing detection caused by small vehicle intervals are solved, the difficulty that the vehicle length measurement is contour measurement due to the characteristic of existing laser linear propagation is avoided, the length measurement of continuously passing vehicles is realized, the following vehicles are not required to stop and wait during measurement, and the influence on road passage is reduced.

The invention discloses a device for measuring the pay-off length of an overhead conductor. The device comprises a machine body frame and a metering assembly, wherein the machine body frame is arranged outside the conductor in a sleeving manner and has a rectangular cross section; the two metering assemblies are symmetrically arranged on the two sides of the wire, and each metering assembly comprises a supporting frame, at least two synchronous wheels arranged in the axial direction of the wire, a crawler belt arranged on the synchronous wheels in a sleeving mode and an encoder fixedly arranged on the supporting frame and used for measuring the rotation number of at least one synchronous wheel. The lead drives the crawler belt and the synchronizing wheel to rotate, the encoder measures the rotating speed of the synchronizing wheel, so that the length of the lead is measured, the contact area of the crawler belt and the lead is large, the slipping phenomenon is avoided, and the length measurement is more accurate.

The invention discloses a length measuring device of a loom. The length measuring device comprises a rack, wherein the rack is provided with a loom main shaft, a mechanical length measuring mechanism and an electronic length measuring mechanism, the mechanical length measuring mechanism comprises a length measuring wheel, and the length measuring wheel is arranged on the rack through a length measuring wheel seat; the rack is also provided with a transmission mechanism which is used for transmitting the power of the loom main shaft to the length measuring wheel; the electronic length measuring mechanism comprises an electronic length measurer and a pressing wheel, the pressing wheel is positioned above the length measuring wheel, a yarn flying gap is formed by the match of the pressing wheel and the length measuring wheel, the electronic length measurer is positioned above the pressing wheel, the inner part of the electronic length measurer is provided with an encoder which rotates synchronously with the loom main shaft, and the bottom part of the electronic length measurer is provided with an electromagnetic needle directly facing the pressing wheel. According to the length measuring device disclosed by the invention, the structure is simple, the operation is easy, the length measurement of yarn is realized by adopting a matching mode of the electronic length measuring mechanism and the mechanical length measuring mechanism, and the length measuring can be more accurate.

The invention relates to the field of measuring equipment in tunnel construction, in particular to a cable length metering device in tunnel construction. The problems that cable length measurement is difficult and equipment is numerous and jumbled in tunnel construction at the present stage are solved. The device comprises at least one spherical or cylindrical shell, the shell comprises an upper cover and a lower base which are hinged and connected, cable through holes are formed in the center positions of the upper cover and the lower base, a top pressing roller tangent to a cable is arranged in the upper cover, a bottom top roller is arranged in the lower base, and the bottom top roller is connected with a meter counter for recording the rotating speed of the bottom top roller. The device has the advantages that the whole device serves as a handheld device, is small in size, convenient to carry and diversified in function, and can have multiple functions in tunnel construction occasions.

An intelligent type power cable emergency breakdown van is used for improving the working efficiency when a communication cable is urgently repaired. Tracks are arranged on the left side and the rightside of a vehicle body, a side vehicle plate is slidably mounted between the tracks, and a side vehicle plate driving mechanism which drives the side vehicle plate to move up and down is arranged between the side vehicle plate and the vehicle body; a new cable loading and unloading assembly is arranged on the rear side of the vehicle body and mainly comprises a supporting arm, a supporting plate,a first loading and unloading oil cylinder, a second loading and unloading oil cylinder and a clamping mechanism, the supporting arm is hinged to the supporting plate, the first loading and unloadingoil cylinder is arranged between the supporting plate and the supporting arm, a U-shaped frame is arranged on the top of the supporting arm, a clamping block is mounted at the left end of the U-shaped frame in a hinged mode, the clamping mechanism used for driving the clamping block to swing is arranged between the clamping block and a clamping arm, and a supporting plate fixing mechanism is arranged between a positioning hole of the supporting plate and the vehicle body; and an old cable recovery assembly is arranged on the left side of the vehicle body or / and on the right side of the vehicle body, and a lifting assembly is arranged in the middle of the vehicle body. The intelligent type power cable emergency breakdown van can greatly reduce manual labor of workers.

The invention relates to a detection method for length of a lubricant-free female condom. The method comprises the steps of (1) moving out the female condom from a package, unfolding the female condom, moving out all built-in mechanisms, and slightly stretching twice within 20mm; (2) soaking the unfolded female condom into a container full of an extension agent for 2 to 2.5 hours, and slightly agitating the liquid during soaking to ensure the extension of a female condom body; (3) draining liquid in the container after soaking, moving out the female condom body, controlling the liquid until no liquid flows, and drying the liquid by the air; (4) horizontally spreading the female condom, flattening, drawing a cutting line from the middle part of the narrow end to the middle part of the wide end of the female condom body through a marking pen, cutting from single surface along the line until obtaining a sector, selecting 5 to 8 relatively-short parts from the narrow opening end part of the female condom to the wide end part of the female condom body, and using the minimum length as the length of the female condom body. The method is accurate to measure.

The invention belongs to the technical field of rail transit, and particularly relates to a protection device for a sensor. The protection device comprises a sheath, wherein the sheath is formed by sequentially connecting a plurality of soft sheaths and hard sheaths; and the sensor is a fiber grating sensor. The protection device disclosed by the invention is convenient to assemble, convenient totransport and install and convenient to disassemble and replace the sensor when a certain section of sensor fails, and is suitable for large-scale production and application. In addition, the protection device can be used for point track occupancy inspection and can also be used for continuous track occupancy inspection. When the protection device is used for the continuous track occupancy inspection, train length measurement, speed measurement, train integrity checking and the like can be synchronously realized.

The invention discloses a composite intelligent cable for a ubiquitous power Internet of Things. The composite intelligent cable comprises an optical fiber cable core, an isolation layer, a metal armor layer and an outer protective layer which are sequentially arranged from inside to outside, wherein the optical fiber cable core comprises an optical fiber conductor, an insulating layer, a semi-conductive shielding layer and a metal shielding layer which are sequentially arranged from inside to outside; temperature sensing optical fibers are arranged in the optical fiber conductor and on the surface of the semi-conductive shielding layer, and a middle-layer sleeve and an outer-layer copper pipe are arranged on the outer side of the temperature sensing optical fibers in the optical fiber conductor; and a middle-layer sleeve and an outer-layer semi-conductive sleeve are arranged on the outer side of the temperature sensing optical fiber of the semi-conductive shielding layer. According tothe composite intelligent cable, the temperature sensing optical fibers are arranged on the surfaces of the optical fiber conductor and the semi-conductive shielding layer of the optical fiber cablecore, so that synchronous temperature measurement of the inner side and the outer side of the cable insulating layer is realized, and the problem of inaccurate cable temperature monitoring caused by temperature difference formed by thermal resistance of the insulating layer in the prior art is solved; and the temperature of the inner layer and the outer layer of the cable insulation layer can be precisely measured, and the cable temperature can be effectively monitored in real time.

The invention discloses a non-woven fabric roll inspection metering device, relates to the technical field of textile machinery, and solves the problems that a metering device used at present does not have a smoothing function, the two sides of a cloth roll are likely to be wrinkled, and detection metering and normal winding are not facilitated. The non-woven fabric roll inspection metering device comprises a base. A rear frame is fixedly arranged on the rear side of the top of the base, a screw jack is fixedly arranged in the middle of the top of the rear side of the base, and a lifting plate is fixedly arranged on the top of the screw jack. Guide strips are fixedly arranged at the front ends and the rear ends of the two sides of the top of the lifting plate, and two side frames are fixedly arranged at the tops of the four guide strips. By arranging side stroking wheels, the automatic stroking function is provided for the metering device, the side stroking wheels are arranged to be in a 20-degree inclined state through included angle type shaft frames, and when a non-woven fabric penetrates through the side stroking wheels, the side stroking wheels can pull the two sides of the non-woven fabric towards the outer side in a staggered manner, the non-woven fabric is stroked to be flat, the non-woven fabric is prevented from wrinkling, and detection metering and normal rolling of the non-woven fabric are facilitated.

The invention discloses a method and device for measuring the length of an automobile transmission shaft under constant pressure.The method comprises the steps that the two ends of the automobile transmission shaft to be measured are gently grabbed for centering at first to ensure that an axle tube of the automobile transmission shaft to be measured and the axis of a telescopic sleeve are located on the same straight line, an alternating current servo motor is operated in a torque mode, two limiting baffles on a fixed block and a movable block are driven to compress the two end faces of the automobile transmission shaft to be measured, a magnetic railing ruler is utilized for measuring the distance between two reference faces making contact with the two end faces of the automobile transmission shaft to be measured, the length of the automobile transmission shaft to be measured under the set force value is obtained, and therefore whether the length of the automobile transmission shaft to be measured is qualified or not is judged.The device is simple and compact in mechanism, low in production cost, small in occupied area and accurate in measuring result.

The invention discloses a pipe detection device, which comprises a base, one side of the base is provided with symmetrically arranged slide bars, the top ends of the slide bars are provided with a scale, and two sets of slide bars are provided with connecting Plate one, one side of the connecting plate one is provided with a limit mechanism, one side of the top of the base is provided with a box, and the top of the box is provided with a threaded rod extending to the inside thereof, and the threaded rod The bottom end is provided with a movable cylinder, and the bottom end of the movable cylinder is provided with a connecting plate 2 which is movably connected with it. The bottom end of the connecting plate 2 is provided with a locking mechanism, and a symmetrically arranged scale rod is arranged in the box. . The beneficial effect is: by moving the slide bar in the forward direction and cooperating with the limit mechanism, the two sets of limit stops are arc-shaped and closely connected. When the slide bar is moved in the reverse direction, the limit stop can be in contact with one end of the pipe, while A scale is set on the top of the slide bar, and the length of the pipe can be measured in conjunction with the scale teeth. The operation is simple and clear, and the accuracy is high.

The invention discloses a double-disc automatic wire take-up device of a cable splitting machine, which comprises a wire pay-off mechanism and a wire take-up mechanism set at the wire outlet end. The wire take-up mechanism includes two wire take-up reels and the Corresponding to the two electromagnetic clutches connected by transmission, the two electromagnetic clutches are in transmission connection with a wire take-up motor through a transmission mechanism. The double-disc automatic wire take-up device of the cable splitting machine of the present invention uses two electromagnetic clutches connected to the wire take-up motor to control the two wire take-up reels respectively, and only one wire take-up reel moves at the same time. After reaching the set condition, The switching of the two take-up reels is realized through the switching of the two electromagnetic clutches, thereby realizing uninterrupted continuous operation. The device has simple structure, convenient control, and greatly improves work efficiency.

The invention provides an intelligent type power cable emergency recovery vehicle which is used for improving the working efficiency when recovery work is carried out on a communication cable. Rails are arranged on the left and right sides of a vehicle body respectively; a lateral vehicle plate is mounted between the rails in a sliding manner; a lateral vehicle plate driving mechanism for driving the lateral vehicle plate to move up and down is arranged between the lateral vehicle plate and the vehicle body; a new cable loading and unloading assembly is arranged on the rear side of the vehicle body, and mainly comprises a supporting arm, a supporting plate, a first loading and unloading oil cylinder, a second loading and unloading oil cylinder and a clamping mechanism; the supporting arm is hinged onto the supporting plate; the first loading and unloading oil cylinder is arranged between the supporting plate and the supporting arm; a U-shaped frame is arranged at the top of the supporting arm; a clamping block is hinged to the left end of the U-shaped frame; a clamping mechanism for driving the clamping block to swing is arranged between the clamping block and a clamping arm; a supporting plate fixing mechanism is arranged between a positioning hole of the supporting plate and the vehicle body; a waste cable recycling assembly is arranged on the left side of the vehicle body or / and the right of the vehicle body; and a hoisting assembly is arranged in the middle of the vehicle body. With the adoption of the intelligent type power cable emergency recovery vehicle, the physical labor of workers can be greatly alleviated.

A handheld length measuring instrument comprises a shell, a small belt pulley, a large belt pulley, a groove type photoelectric sensor, a programmable counter and a display element are arranged in the shell, the small belt pulley and the large belt pulley are doubled as measuring rolling wheels, and are connected with the shell in a rotation mode through a small rotating shaft and a large rotating shaft respectively, the small belt pulley protrudes out of the shell, the small belt pulley and the large belt pulley are in transmission through a belt, a light source emitter is arranged on one arm of the groove type photoelectric sensor, a light source receiver for receiving emission light sent by the light source emitter is arranged on the other arm of the groove type photoelectric sensor, a tooth-shaped shading disc is arranged on the large rotating shaft, the tooth-shaped shading disc and the large belt pulley synchronously rotate, the tooth-shaped shading disc enters a groove opening of the groove type photoelectric sensor, and teeth on the tooth-shaped shading disc effectively shield the emission light sent by the light source emitter. The programmable counter is used for processing output signals of the groove type photoelectric sensor, and the length of a measured object is formed and is displayed on the display element.

The invention discloses a heavy double-wheel traction device, which is applied to steel wire rope twisting equipment, relates to the technical field of steel wire rope twisting, and comprises a forward traction wheel, an inclined traction wheel and a rotation driver, an axis column of the inclined traction wheel is connected with an inclined transmission shaft for driving rotation, and the forward transmission shaft and the inclined transmission shaft are both connected with the rotation driver; the rotation driver is provided with a length meter, and the length meter calculates the traction length of the steel wire rope according to the rotation linear speed of the forward transmission shaft and the rotation linear speed of the inclined transmission shaft. The diameter of the forward traction wheel and the diameter of the inclined traction wheel are both larger than or equal to 4500 mm. The rotating driver drives the driving main shaft to rotate and enables the forward traction wheel and the inclined traction wheel to rotate so as to be matched with the synchronous belt and the length meter to meter the length of the steel wire rope, and the purposes of stable driving and effective traction and counting of the large-diameter steel wire rope are achieved.