34results about How to "Increase telescopic length" patented technology

The present application discloses a telescopic retractor holder comprising a telescopic rod (10) with an inner tube (11), an outer tube (12) and a locking mechanism as well as a retractor rod (20). Said retractor rod has at its one end a retractor mounting (21), which is adapted for releasably gripping a retractor, and at its other end is fastened to the telescopic rod (10) by means of a jointed connection (30). The telescopic rod (10) can be supported on an operating table and has an actuating mechanism (15), by which the locking mechanism can be transferred from a first position, in which the inner tube (11) and the outer tube (12) of the telescopic rod (10) are held immovably in relation to one another, into a second position, in which the inner tube (11) and the outer tube (12) of the telescopic rod (10) are movable in relation to one another in the longitudinal direction of the tubes (11, 12).

The invention provides a multifunctional distribution pump truck which comprises a chassis, a stirring device, a feeding device, a pumping device, a distribution device and a hoisting device. A machine frame is arranged on the chassis; the stirring device is arranged on the machine frame and located at the rear end of the chassis; the feeding device is arranged on the machine frame and used for conveying materials into the stirring device; the pumping device is arranged on the chassis, a hopper of the pumping device is located below the stirring device, and the stirring device conveys the stirred materials into the hopper of the pumping device; the distribution device is arranged on a rotary table of the chassis, and a conveying pipe of the distribution device communicates with a discharge outlet of the hopper; and the hoisting device is connected with the distribution device and used for hoisting objects. The multifunctional distribution pump truck provided by the invention integrates hoisting, feeding, stirring, pumping and distribution functions, meets the requirement for automation of building construction of urban and rural areas, lowers the construction cost and improves the construction efficiency.

The invention discloses a forklift. The forklift comprises a fork, a lifting device driving the fork to lift in the longitudinal direction, a rotating device driving the fork to rotate around the longitudinal axis, a horizontal moving device driving the fork to move horizontally along the horizontal plane to increase the retractable length of the fork and walking devices. The rotating device can make cargoes rotate without using the walking devices for steering, and the forklift can realize turning of cargo angles on the occasion that the walking devices cannot be steered due to too narrow space. When the cargoes on one side of a truck are unloaded, loading and unloading of the cargoes on the same side of the truck can be realized only by driving the fork to be close to the cargoes placedon the other side of the truck through the horizontal moving device; and when the cargoes of one truck need to be pulled in parallel to another truck placed relatively, what is only needed is to drivethe fork to move between the two trucks through the horizontal moving device. When the forklift needs to work in a trench lower than the ground, what is only needed is to make the lifting device drive the fork to descend to the ground under the support of the walking devices, the workplaces are increased, and the adaptability is good.

The invention relates to a concrete leveling machine. The concrete levelling machine comprises an engine base. The two sides of the engine base are provided with supporting seats. Telescopic rods are arranged on the supporting seats. The front portions of the telescopic rods are provided with levelling machine heads. The engine base is provided with a driving device used for driving the telescopic rods to move. By arranging the two telescopic rods on the engine base, the problem of flexibility deformation of a single telescopic rod is solved, and the telescopic length of the telescopic rods is greatly lengthened. Due to the fact that the two telescopic rods support the levelling machine heads, the torsion stability of the levelling machine heads is good, the working width of the levelling machine heads is greatly lengthened, and therefore the levelling efficiency of the levelling machine is greatly improved.

Provided are an automatic drill pipe mounting and dismantling device and an engineering drilling machine. The drill pipe mounting and dismantling device includes a drilling machine base, a drilling machine platform rotatably arranged on the drilling machine base, a drill pipe tray, a tray lifting mechanism and a tray inclination angle adjusting mechanism, wherein the drilling machine platform is provided with a drill pipe to be mounted or dismantled, a pusher and a mounting and dismantling drill pipe transfer channel for transferring or moving out the mounted or dismantled drill pipe. The traylifting mechanism drives the drill pipe tray to transfer the mounted or dismantled drill pipe to be or from between the drill pipe to be mounted or dismantled and the pusher. The tray inclination angle adjusting mechanism includes a telescopic push rod with the two ends rotatably connected with the drilling machine base and the drill pipe tray respectively, the telescopic push rod drives the drill pipe tray to rotate, so that the inclination angle of the mounted or dismantled drill pipe is matched with the inclination angle of the drill pipe to be mounted or dismantled and the inclination angle of the pusher. The problem that the free end of a rocking arm of an existing engineering drilling machine has a high load and is damaged easily, the thrust and stroke length of a bracket adjustinghydraulic cylinder are limited, exploiting work can only be performed on an inclined coal layer with a small inclination angle, and the application range of the drill pipe mounting and dismantling device is limited are solved. The automatic drill pipe mounting and dismantling device has the advantages of being simple in structure, high in drill pipe mounting and dismantling efficiency and precise,and the posture of the drill pipe including the drill pipe tray can be adjusted randomly flexibly according to the design length of a hydraulic telescopic push rod.

The invention provides a movable emergency device based on 5G communication, belongs to the technical field of emergency devices, and aims to solve the problem that when a supporting mechanism in the emergency device is used for supporting, due to the fact that two sliding adjusting rods in a fixing sleeve are distributed in an opposite state, the stability of the emergency device during supporting is greatly reduced. The device comprises amobile vehicle body, a signal tower is installed in a hopper of the mobile vehicle body, and the front side and the rear side of the bottom of the mobile vehicle body are each provided with a supporting mechanism. A mainframe box is arranged on the upper portion of the mobile vehicle body and located between the vehicle head and the vehicle hopper. During supporting, the two fastening nuts are manually loosened, then the two adjusting rods slide in the opposite directions, then supporting is conducted through base plates at the lower ends of the four telescopic legs in the two supporting mechanisms, and due to the fact that the two adjusting rods are distributed on the fixing piece in a staggered mode, the telescopic length of the two adjusting rods is further increased; and therefore, the stability of the emergency device during supporting is greatly improved.

The invention discloses a three-layer pallet fork device which comprises an automatically extensible double-layer pallet fork mechanism, a fork plate, synchronous pulleys, a synchronous belt and linear guide rails The double-layer pallet fork mechanism is provided with an extensible plate and a pallet fork mechanism body. The linear guide rails are in rigid connection with the extensible plate. The fork plate is provided with a slide block assembly and is installed on the linear guide rails in a front-back moving mode. The synchronous pulleys are installed on the front end face and the rear end face of the extensible plate of the double-layer pallet fork mechanism. The synchronous belt is installed to be engaged with the front and back synchronous pulleys. The fork plate is provided with a first synchronous belt pressure block. The pallet fork mechanism body is provided with a second synchronous belt pressure block. The synchronous belt is fixed to and installed on the pallet fork mechanism body through the second synchronous belt pressure block. The fork plate is fixed to and installed in an appropriate position of the synchronous belt through the first synchronous belt pressure block. The three-layer pallet fork device provided by the invention lengthens the extensible length, and effectively solves the problem that the maximum extensible length of an existing pallet fork device is smaller than twice the length of the existing pallet fork device.

The invention provides a linear superposed large scope fast telescopic device. The device comprises a pedestal and at least two stages of slide blocks. A gear which is located in the pedestal and connected with a motor drives the slide blocks to slide. The slide blocks are stacked on the pedestal stage by stage. The linkage relationship between the slide blocks is formed through meshing of gears and racks of the upper and lower stages of slide blocks. According to the telescopic device, different extension-and-retraction amount and different extension-and-retraction speed can be obtained by selecting the quantity of the stacked slide blocks. The extension-and-retraction directions of all stages of slide blocks are identical. The extension-and-retraction amount can be decided by the number of stages of the slide blocks. The linear linkage telescopic device overcomes the structural instability caused by the situation that in the prior art, power equipment needs to extend or retract with the device, and accordingly the position of the power equipment is changed. Through keeping the power equipment in an unchanged position of the fixed pedestal, because of the linkage relationship between the upper and lower stages of slide blocks, the power is transmitted and outputted to each stage of slide block, thus not only the precise control of the extension-and-retraction amount can be achieved, but also at the same time, the stability of the whole device is maintained.

The invention discloses a double-support-legs nested detachable node for assembled type supporting and a construction method thereof, and belongs to the technical field of construction auxiliary workpieces. The main principle of the double-support-legs nested detachable node is the decomposition of force under static stress balance, the double-support-legs nested detachable node is mainly used foradjusting the supporting length of the assembled steel support and exerting and bearing the pre-axial force. The double-support-legs nested detachable node is composed of a wedge-shaped body, a clamping plate, a sliding base, an end plate, a jack tray and a high-strength bolt. The device is under the combined action of three sets of high-strength bolts, and clamping is carried out after the two symmetrical clamping plates and the wedge-shaped body are nested in an arc-shaped protruding mode through the wedge-shaped body, so that the purpose of controlling the deformation of the foundation pitis achieved by bearing and transmitting the axial force of the assembled steel support. According to the device, the stress is uniform, the bearing performance is good, the rigidity is large, the stability is high, the overall performance is good, the spare part is not needed, the quality control is good, the application is convenient and rapid, repeatedly use can be achieved, the device is an efficient and safe construction device for adjusting the length of the steel support and bearing the axial force.

A movable intelligent telescopic audio system includes a speaker box, a telescopic rod mechanism and a base mechanism. The fixed clamping connection between the pipe fittings is realized by means of a buckle and a spring top ball. Working together, the telescopic action of the multi-section rod can be realized, the telescopic length of the overall telescopic rod mechanism is improved, and the sound can be raised to a higher distance from the ground, so that the sound of the speaker can be better diffused, and the efficiency of the speaker is greatly improved. The combination of the universal wheel, the braking device and the retractable skateboard makes the sound more convenient to adjust and fix the position, and at the same time increases the force range of the base mechanism, improves the stability, the overall operation is simple and convenient, and it is easy to spread and popularize.

The invention discloses an intelligent snow remover. The intelligent snow remover is used for accumulated snow sweeping and comprises guide rails, moving mechanisms, pressure sensors, telescopic devices, accumulated snow conveying devices and a controller; the moving mechanisms are arranged on the guide rails and move on the guide rails in the X direction, the Y direction and the Z direction, anda snow clearer is further arranged at the lower end of the guide rail in the Z direction; the moving mechanisms move on the guide rails to drive the snow clearer to sweep accumulated snow on a workingface, the accumulated snow conveying devices are arranged below the working face, and the accumulated snow conveying devices are connected with the telescopic devices; conveying belts are arranged inthe accumulated snow conveying devices, the conveying belts complete conveying of the accumulated snow, and the pressure sensors are arranged below the working face; the snow is cleared into snow containing frames on the accumulated snow conveying devices, and then the snow is treated in a centralized mode; and the intelligent snow remover further comprises the moving mechanisms, and the moving mechanisms can drive the snow remover to move. According to the intelligent snow remover, the accumulated snow can be efficiently and conveniently cleared.

The invention discloses a double-support-legs nested detachable node for assembled type supporting and a construction method thereof, and belongs to the technical field of construction auxiliary workpieces. The main principle of the double-support-legs nested detachable node is the decomposition of force under static stress balance, the double-support-legs nested detachable node is mainly used foradjusting the supporting length of the assembled steel support and exerting and bearing the pre-axial force. The double-support-legs nested detachable node is composed of a wedge-shaped body, a clamping plate, a sliding base, an end plate, a jack tray and a high-strength bolt. The device is under the combined action of three sets of high-strength bolts, and clamping is carried out after the two symmetrical clamping plates and the wedge-shaped body are nested in an arc-shaped protruding mode through the wedge-shaped body, so that the purpose of controlling the deformation of the foundation pitis achieved by bearing and transmitting the axial force of the assembled steel support. According to the device, the stress is uniform, the bearing performance is good, the rigidity is large, the stability is high, the overall performance is good, the spare part is not needed, the quality control is good, the application is convenient and rapid, repeatedly use can be achieved, the device is an efficient and safe construction device for adjusting the length of the steel support and bearing the axial force.

The invention relates to a boom system for a crane, in particular a mobile crane, comprising at least one telescopic main boom and at least one fly jib that can be bolted to a telescopic length of the main boom. When retracted, the telescopic length receiving the fly jib can be bolted to at least one surrounding telescopic length.

The invention relates to a five-section telescopic conveyer. The five-section telescopic conveyer is characterized in that five frames are equal in length, and the five-section telescopic conveyer comprises a first telescopic mechanism, a second telescopic mechanism and a conveying mechanism, wherein the first telescopic mechanism is arranged on the second frame, so that the second frame extends and retracts in the first frame, and the third frame is driven to extend and retract through a chain clamp; the second telescopic mechanism is arranged on the fourth frame, so that the fourth frame canextend and retract in the third frame, and the fifth frame above is driven to extend and retract through a chain clamp; the conveying mechanism comprises a plurality of rollers, an electric roller and a belt; the electric roller is arranged below the front end of the first frame; and the belt is wound on the rollers and the electric roller, and is in a tension state. According to the five-sectiontelescopic conveyer, the electric roller is preposed, so that the five frames are equal in length, the extension and retraction capability is maximum, bearing angle steel cooperates with bearing systems of bearing wheels, bearing capacity is high, the structure is more simple, and safety performance during utilization is high.

The invention discloses a rotary retractable toothbrush. The toothbrush includes a toothbrush handle, a toothbrush head, toothbrush hair, a sealing head, a USB sealing cover, a lithium battery, a contraction key, a stepping motor, a drive rotating shaft, a driven rotating shaft, a sliding groove, a start button and a fastener. The main part of the rotary retractable toothbrush is provided with thetoothbrush handle, the front portion of the toothbrush handle is provided with the toothbrush head, the upper portion of the toothbrush head is provided with toothbrush hair, the tail portion of thetoothbrush handle is provided with the sealing head, the tail portion in the toothbrush handle is provided with a USB connector, the USB connector is electrically connected with the lithium battery, and the lithium battery is electrically connected with a stepping motor. The rotary retractable toothbrush is novel in design and convenient to use, a sliding expansion structure is arranged, the stretching length of the toothbrush is greatly increased, the toothbrush is suitable for people of different ages, the toothbrush head is connected with a toothbrush cylinder, the replacement of the toothbrush head is achieved, the toothbrush embodies the superiority and the requirements of users can be met.

The embodiment of the invention discloses a multi-stage hydraulic multiplying pulley vertical lifting platform fire truck, which belongs to the technical field of fire fighting and rescue equipment, and includes a car chassis, the tail of the car chassis is hingedly equipped with a telescopic arm, and the top end of the telescopic arm is A slewing platform is provided, and a working arm is installed on the slewing platform, and a working bucket is installed on a section of the working arm; Front hydraulic outriggers are installed on the left and right sides, and rear hydraulic outriggers are installed on the left and right sides of the telescopic arm away from the cab of the car. The chassis of the car is provided with an auxiliary support oil cylinder. Each is equipped with a transitional hydraulic cylinder. The invention solves the technical problems that the maximum rescue radius of the existing high-altitude fire truck is small, and the maximum rescue height is greatly limited by the transmission form of the hydraulic oil cylinder, and is widely used in high-altitude fire fighting or rescue.

The utility model relates to an engine cavity shell mold soil knocking hammer, which relates to the technical field of tools for removing engine cavity shell mold soil, and comprises a cavity shell on which a knocking mechanism is reciprocally slidably installed. The invention solves the problem of fast separation of the sand mold and the cavity shell in the traditional technology, but ignores the different influences on the cavity shell due to the different operation skills of each operator; it ignores the fact that when the sand mold is peeled off, it is easy The effect of impact on the surface of the chamber shell; and the irregularity of the shape of the limited chamber shell make the problem of operator technical requirements even greater.

The embodiment of the invention discloses a telescopic arm of a fire fighting truck of a climbing platform, and belongs to the technical field of fire fighting and rescue equipment. The telescopic arm comprises a plurality of stages of telescopic cylinders which are sequentially arranged together in a sleeved mode, wherein each stage of telescopic cylinder comprises a plurality of telescopic joints which are arranged together in a sleeved mode, each stage of telescopic cylinder is connected with a steel wire rope hydraulic lifting device, the steel wire rope hydraulic lifting device of the first-stage telescopic cylinder is arranged in the telescopic joint on the outermost layer, and the steel wire rope hydraulic lifting device of the next-stage telescopic cylinder is arranged in the telescopic joint on the innermost layer of the previous-stage telescopic cylinder; and the telescopic joint on the outermost layer of the next-stage telescopic cylinder is arranged in the telescopic joint on the innermost layer of the previous-stage telescopic cylinder in a sleeved mode, and an oil pipe conveying device used for supplying oil to the next-stage telescopic cylinder is arranged in the telescopic joint on the innermost layer of the previous-stage telescopic cylinder. According to the telescopic arm, the technical problems that the lifting height of an existing telescopic arm is greatly limited by the transmission mode of a hydraulic oil cylinder, and hydraulic oil power cannot be continuously conveyed along with lifting of the telescopic arm are solved, and the telescopic arm is widely applied to high-altitude fire fighting or rescue.

The invention discloses a pencil clamping and placing device for student stationeries. The pencil clamping and placing device comprises a sleeve, wherein the upper end of the sleeve is provided with afixing tube, the fixing tube is screw-connected and fixed to the sleeve; the upper end of the fixing tube is provided with an adjusting device, the upper end of the adjusting device is provided witha rotary pen cap, the outer side of the rotary pen cap is provided with a placing hanging rod, and the placing hanging rod is fixedly connected with the rotary pen cap; the center of the lower end ofthe rotary pen cap is provided with a fixing plate, the right end of the center of the fixing plate is provided with a first lead screw, and the first lead screw is fixedly connected with the fixing plate. When the pencil clamping and placing device for student stationeries is used, the telescoping length of a second lead screw is adjusted by turning the rotary pen cap, the second lead screw pushes a pencil in the sleeve to change the telescoping length of the lower end of the pencil, pencil sharpening can be performed in a clamping state of a clamping cylinder when being needed, or the pencilcan also be taken down for sharpening and then is put on again for use; the telescoping length of the pencil is wholly adjusted, the pencil utilization rate is high, materials are saved, and the pencil clamping and placing device is convenient to use.

The invention provides a temperature control sliding rod based on a honeycomb type memory alloy structure, and belongs to the field of aerospace. The problem of assembling error accumulation in the on-orbit construction process of a large-scale space truss structure based on part materials and the problem that the form of the truss structure needs to be changed are solved. The temperature control sliding rod comprises a signal receiver, a battery pack, a temperature control sheet, a honeycomb type memory alloy and a shell, the shell comprises an inner shell body and an outer shell body, the inner shell body is connected in the outer shell body in a nested manner, the signal receiver, the battery pack and the temperature control sheet are all arranged in the outer shell body and connected with the outer shell body, the battery pack is respectively connected with the signal receiver and the temperature control sheet and supplies power to the signal receiver and the temperature control sheet, the signal receiver is in communication connection with the temperature control sheet, the honeycomb type memory alloy is arranged in the inner shell body, one end of the honeycomb type memory alloy is connected with the temperature control sheet, and the other end of the honeycomb type memory alloy is connected with the inner shell body. The temperature control sliding rod is mainly used for a large-scale space truss structure.

The invention provides a telescopic pipe set, which comprises a fixing support and a pipe set body. The pipe set body is slidably arranged on the fixing support; the pipe set body comprises two or more segments of single pipes telescopically arranged in series, and the adjacent single pipes are movably connected by connecting pieces; and the pipe set body comprises a plurality of highest points located on the plane A and a plurality of lowest points located on the plane B, and the plane A and the plane B are parallel to each other. By applying the technical scheme, the telescopic pipe set hasthe effects that the structure is simple, extending-retracting adjustment is facilitated, and the construction requirements of concrete pouring are met. The invention further provides a concrete distributing machine, which comprises the telescopic pipe set. The invention further provides a trolley, which comprises the concrete distributing machine.