32results about How to "Good self-locking" patented technology

The invention provides a combined clamping device for machining and a using method. A U-shaped cover is inversely fixed to the top of a clamp bottom plate, a vertical pull rod is slidably mounted in the center of the top of the U-shaped cover through a sliding sleeve seat, and a chuck is fixed to the top end of the vertical pull rod; the bottom end of the vertical pull rod is in sliding fit with a first shifting fork sliding groove in one end of a double-end shifting fork, and the vertex angle portion of the double-end shifting fork is hinged to the inner wall of the U-shaped cover. An L-shaped vertical rod is fixed to the outer wall of the U-shaped cover, a screw transmission mechanism is installed between the L-shaped vertical rod and the U-shaped cover in a penetrating mode, a threaded sleeve of the screw transmission mechanism is rotationally limited to the U-shaped cover, and a threaded rod is installed in the threaded sleeve in a threaded transmission mode; the end of the threaded rod is in sliding fit with a second shifting fork sliding groove in the other end of the double-end shifting fork and drives the vertical pull rod to vertically ascend and descend through the first shifting fork sliding groove. The clamp adopts a combined transmission structure combining screw transmission and plugging transmission, and can be used for reliably clamping a workpiece in the machining process.

The utility model relates to insulator processing technical field especially is ultra -high pressure glass insulator blank automatic positioning calibration clamp, including support frame, the lower part fixed mounting of support frame has lower clamping mechanism, the upper portion sliding installation of support frame has upper clamping mechanism, and the upper portion is set in support frame Sliding slot, the sliding slot is slidably connected with adjusting mechanism, and adjusting mechanism is fixedly installed with upper clamping mechanism, and the lower part of support frame is fixedly installed with control box on the side away from lower clamping mechanism. The utility model discloses ultra -high pressure glass insulator blank automatic positioning calibration clamp, through setting adjustable upper and lower clamping mechanism, can adapt to the insulator blank of different length, realizes the synchronous clamping to the both ends of core rod, improves the clamping stability and versatility, and the clamping assembly adopts the thread transmission self -locking structure simultaneously, and the clamping force is even reliable, prevents the clamping slack, promotes the security, and the overall structure is high degree of automation, and convenient operation is applicable to the ultra -high pressure glass insulator automatic production line application.

The application relates to a facial tissue foreign matter detection device and relates to the technical field of facial tissue production. The device comprises a bottom plate, a connecting frame one, a first detection mechanism, a placing mechanism and a second detection mechanism. The application has the effect of improving foreign matter detection precision. The first detection mechanism comprises a fixed guide plate, a first adjusting mechanism, a second adjusting mechanism and a detection module one and other components. The edge of the facial tissue is specially detected by the detection module one, so that a detection blind area is avoided, and the horizontal height position of the detection module one is adjusted by the first adjusting mechanism and the second adjusting mechanism, so as to adapt to facial tissues with different sizes and thicknesses. The second detection mechanism comprises a fixed cylinder, a motor two, a linkage mechanism, a motor three and other components. Through mutual cooperation, the detection range of the detection module two can be expanded, illumination compensation is realized through an illumination module, no dead angle detection of the facial tissue can be realized, the adjustment is flexible, and the detection precision and efficiency are high.

The invention discloses a magnetic fluid sealing transmission equipment shell lifting device which comprises a lifting device main shaft and a self-locking type lifting mechanism arranged on the lifting device main shaft, and the self-locking type lifting mechanism comprises a sliding telescopic assembly, a fixed telescopic assembly and an adjustable supporting hinge mechanism. The adjustable supporting hinge mechanism is hinged to the fixed telescopic assembly and the sliding telescopic assembly, and when the adjustable supporting hinge mechanism is in a supporting and lifting state, a self-locking limiting structure is formed between the sliding telescopic assembly and the fixed telescopic assembly. According to the magnetic fluid sealing transmission equipment shell lifting device, through the arrangement of the adjustable supporting hinge mechanism, lifting of magnetic fluid sealing transmission equipment shells with different inner diameters can be met, the universality is good, a self-locking limiting structure is arranged on the lifting device, and self-locking between the lifting device and a shell product is achieved through gravity; the lifting safety performance is guaranteed, use is safe and reliable, and the whole device is simple in structure and convenient and fast to operate.

The utility model provides a kind of rolling mill shaft holding device, including holding claw, axial drive mechanism and mounting mechanism, axial drive mechanism includes screw rod and worm gear assembly, mounting mechanism includes sleeve and sleeve, worm gear assembly is connected in one end of sleeve, sleeve is built in sleeve, holding claw is connected in the end of sleeve away from worm gear assembly, screw rod is built in sleeve, the head end of screw rod is connected in holding claw, worm gear assembly has internal thread, the thread end of screw rod and the internal thread between worm gear assembly are thread-connected to be movably arranged along self axial direction.Such as through worm gear assembly and the mutual cooperation of screw rod to realize the axial displacement function of holding claw, while the thread connection between worm gear assembly itself and screw rod forms double mechanical self-locking structure, to ensure better self-locking effect, improve the safety of equipment;And structure structure, only need to change and overhaul component when later maintenance, improve overhaul efficiency.

The application discloses a kind of quasi-continuous laser annular light spot energy uniform distribution implementation system, including bearing plate, the bottom of one side of bearing plate is provided with quasi-continuous laser for emitting parallel laser beam, the top of one side of bearing plate is provided with light guide for connecting the emission end of quasi-continuous laser, the output end of light guide is rotatably connected with rotary tube, the inside of rotary tube is mounted with mirror, which is arranged obliquely to the axis of rotary tube and is used for emitting and deflecting the parallel laser emitted by quasi-continuous laser, the bottom of bearing plate is provided with driving element for driving rotary tube to rotate, so as to carry out annular scanning, the output end of rotary tube is rotatably connected with focusing element for converging rotating planar scanning beam to form annular light spot, by relying on rotary scanning of rotary tube and matching dynamic forming mode of focusing convergence, quasi-continuous laser pulse working mode is adapted, and phase distortion problem generated under the action of laser pulse rising and falling edge transient state in traditional complex optical system is effectively avoided.

The utility model relates to a screw jack device for large -scale work piece support leveling, including support frame, screw rod, hand wheel, bracket and bolt, support frame whole presents the trapezoidal structure of little up big, is equipped with the mounting hole on the support frame, is equipped with the stop hole on the upper portion of mounting hole, hand wheel is installed in the stop hole, and can rotate relative to support frame, screw rod lower part passes in hand wheel and mounting hole in proper order, and is fixedly connected through trapezoidal thread and hand wheel screw thread cooperation, upper portion passes through bolt and bracket fixed connection, the utility model discloses through support frame adopts the trapezoidal structure of little up big, greatly enhanced the overall rigidity, effectively reduced the risk of falling when supporting large -scale work piece, provides the stable support foundation for large -scale work piece, guarantees the security of operation process, simultaneously through the trapezoidal thread cooperation of hand wheel and screw rod, single person can easily realize the lifting operation of screw rod, need not many people cooperation, significantly improves the operation efficiency, can satisfy the demand of large -scale work piece support leveling fast.

The embodiment of the utility model discloses a liquid cooling plate airtight tool which comprises a main connector, an air pipe connector is installed on the top of the main connector, a clamping jaw installation groove is formed in the outer side of the lower end of the main connector, a clamping jaw clamping ring is arranged on the clamping jaw installation groove, the upper ends of a plurality of clamping jaws are clamped on the clamping jaw clamping ring, and a locking ring is arranged on the outer side of the main connector and the outer sides of the clamping jaws in a sleeved mode. Sealing grooves are formed in the outer sides of the upper ends of the clamping jaws, and first sealing rings are installed in the sealing grooves. The utility model has the advantages of simple structure, low cost, good self-locking property, good air tightness and low failure rate.

The embodiment of the invention provides an intelligent door and window system, and relates to the field of windows. The intelligent door and window system comprises a window frame and a window body movably connected with the window frame. The driving mechanism is arranged between the window frame and the window body and used for driving the window body to move relative to the window frame so as to open or close the window body; the sensor module is used for sensing environmental rainfall information and generating a trigger signal; and the control unit is electrically connected with the sensor module and the driving mechanism and is used for controlling the driving mechanism to act according to the trigger signal. Through mutual cooperation of the sensor module, the control unit and the driving mechanism, automatic opening and closing of the door and window under rainfall and other environmental conditions are achieved, manual intervention is reduced, and use convenience and safety are improved.

The utility model provides a kind of setting roll gap adjustable's crushing production line of silicon material crusher. Material elevator, crusher, screening machine, magnetic separator, feeder and double-layer weighing roller line are sequentially included, the crusher includes pedestal, crushing cavity, left roll, right roll, left roll drive system, right roll drive system for respectively driving left roll, right roll and variable distance drive system, the crushing cavity is set on pedestal, the position of the pedestal corresponding crushing cavity is provided with discharge port, the main body of left roll and right roll is set in crushing cavity, the end of left roll and right roll is respectively connected with corresponding slide plate slidingly connected on crushing cavity, the left roll drive system is connected with left roll, the right roll drive system is connected with right roll, the variable distance drive system is two sets, respectively set in the head end and tail end of crushing cavity, each set includes variable distance drive motor, speed reducer, coupling, T-type screw, screw nut seat, slide plate and screw nut seat.

The utility model discloses a cable traction device belongs to cable take -up field, including the casing, the casing single -sided opening, the opening installs the traction motor, installs the traction wheel on the traction motor, the traction wheel below is provided with the compression wheel, the casing is far from the cable storage module of opening one side and is provided with, the cable storage module and the traction wheel between be provided with the tension pulley, be provided with the tension detection module between the tension pulley and the traction wheel, the tension pulley passes through the shift adjusting mechanism and is installed to the casing. Make the cable in the traction process can keep suitable tension, avoid because the tension is too big and leads to the cable excessive tensile damage, or the tension is too small and causes the cable relaxation, and the traction is not smooth etc. problem, effectively improved the quality and efficiency of cable traction, guaranteed the stability and reliability of the traction process.

The application provides a mold water collecting module and a cooling valve. The cooling valve comprises a valve core assembly, the valve core assembly comprises a center rod and a valve plate group installed on the center rod, the center rod passes through the middle part of the valve plate group; a switching mechanism is used for rotating the valve plate group, changing the rotation angle of the valve plate group, and switching the working mode of the cooling valve; a shell is used for installing the switching mechanism and the valve core assembly, the shell comprises a top shell, a middle shell and a bottom shell, the bottom shell is detachably connected with the middle shell, the top shell is detachably connected with the middle shell, and the valve plate group is located in the middle shell.

This utility model relates to the technical field of bracing devices, specifically disclosing an active spiral steel pipe bracing device. It includes a spiral steel pipe with vertical support plates fixedly installed at both ends. A support screw is fixedly installed on one side of the spiral steel pipe, with one end of the support screw passing through the vertical support plate and extending into the interior of the spiral steel pipe. A limit plate is fixedly installed at one end of the support screw, and a pressure sensor is fixedly installed at the other end of the spiral steel pipe. This utility model achieves precise application and dynamic control of prestress by electrically driving the adjustment of the support length and using the pressure sensor to monitor the support force in real time. It offers efficient adjustment, intuitive monitoring, avoids overpressure or underpressure, and improves support safety and construction efficiency.

The utility model discloses a kind of bagged material folding belt conveyors, including fixed frame, folding frame being hingedly arranged in one end of fixed frame and support frame being fixed below fixed frame, motor mounting bracket is movably hingedly connected at the bottom of folding frame, gear box and screw motor are respectively mounted at the both sides of motor mounting bracket, screw motor is drivenly connected with two trapezoidal screws by gear box;The inside of support leg of support frame is fixed with fixed seat, the fixed seat is rotatably connected with turnover frame, and screw nut is installed on the turnover frame.The folding frame of the utility model realizes folding, unfolding and supporting effect by screw motor and two trapezoidal screws, the included angle between trapezoidal screw thread direction and supporting stress direction is larger, self-locking effect is good and obviously higher than push rod, folding frame is supported by two trapezoidal screws symmetrical in front and back, so that it is supported stably and stress is evenly, still has excellent reliability and stability under the state of bearing transport.

A fan yaw reduction gear and mounting base repair device, including bottom support seat, bottom adjusting seat, longitudinal adjusting screw rod, longitudinal adjusting sliding block, horizontal adjusting screw rod, the top of the bottom support seat has a bottom support seat table, the inside of the bottom support seat table has an adjusting seat connecting groove, the adjusting seat connecting groove is adapted to the bottom adjusting seat, the adjusting seat connecting groove connects the bottom adjusting seat, the bottom adjusting seat slides inside the adjusting seat connecting groove, the adjusting seat connecting groove has an adjusting seat positioning rod inside, the adjusting seat connecting groove is rotatably connected with the adjusting seat drive screw rod, the adjusting seat drive screw rod has an adjusting seat drive nut on the side, one side of the bottom adjusting seat has an adjusting seat positioning groove, the adjusting seat positioning groove is adapted to the adjusting seat positioning rod, the adjusting seat positioning groove connects the adjusting seat positioning rod, and the adjusting seat positioning groove slides outside the adjusting seat positioning rod.

The application relates to an RV reducer with an output locking function, which comprises an RV reducer body, an output locking disc, an input shaft limiting screw, a motor connecting shaft and an elastic component. The output locking disc is coaxially fixed outside an output disc of the RV reducer body. An input shaft of the RV reducer body is installed in the reducer body in a displaceable manner along an axial direction. An installation hole is arranged at a power input end of the input shaft, and an outer spline is arranged at the other end. The input shaft limiting screw is connected with a self-locking threaded hole on the output locking disc, and the elastic component is arranged in the installation hole. The output shaft limiting screw and the elastic component are matched to realize axial positioning of the input shaft. The inner end of the motor connecting shaft is drivingly connected with the power input end. When the RV reducer is in a running state, the outer spline of the input shaft is in a disengaged state with a spline hole section of the output locking disc. When the RV reducer is in a locking state, the outer spline of the input shaft is in a matched state with the spline hole section of the output locking disc. The application realizes self-locking of the reducer.

The utility model provides a gas connecting pipe convenient to install. The gas connecting pipe convenient to install comprises a first gas pipeline, a second gas pipeline and a sealing connecting mechanism, sealing through grooves are formed in the inner walls of the ends, close to each other, of the first gas pipeline and the second gas pipeline, and the first gas pipeline and the second gas pipeline are connected and fixed through the sealing connecting mechanism; the sealing connecting mechanism comprises a connecting sleeve, a first sealing ring, two rotating lantern rings, two inner threaded sleeves, two second sealing rings, two rubber rings and two first through inserting grooves. According to the gas connecting pipe convenient to install, by rotating the lantern ring and the internal thread sleeve and utilizing the external threads opposite to the threads on the connecting sleeve, an operator only needs to rotate the internal thread sleeve, rapid connection and separation of the first gas pipeline and the second gas pipeline can be achieved, complex tools are not needed, the installation difficulty is greatly lowered, and the installation efficiency is improved. The installation time is shortened, and the working efficiency is improved.

The application belongs to the technical field of pipe network leakage monitoring, and particularly relates to a pipe network leakage monitoring system with LoRa ad hoc network and power line carrier dual-mode transmission, which comprises a fixed shell, a wireless LoRa Mesh ad hoc network and a wired power line carrier communication module are fixedly installed on the fixed shell, an induction device is fixedly installed in the fixed shell, a connecting pipe is fixedly installed on the side wall of the fixed shell and is communicated with the induction device, and a heat dissipation structure is arranged on the fixed shell. The heat dissipation structure comprises a heat dissipation cavity opened on the fixed shell, a heat conduction plate corresponding to the induction device is fixedly installed on the inner wall of the heat dissipation cavity, a mounting bracket is fixedly installed on the inner wall of the heat dissipation cavity, and a motor is fixedly installed on the mounting bracket. The heat of the device is guided to the heat dissipation cavity through the heat conduction plate, the heat conduction plate in the heat dissipation cavity is cooled, and the operation of the device is not affected by the tiny soil particles entering the heat dissipation cavity.

The utility model discloses a radio frequency liposuction device, which relates to the technical field of medical instruments, and comprises an electrode assembly and a knob assembly, the electrode assembly comprises a handle and an outer electrode support, the handle is rotatably connected with the outer electrode support, the handle is provided with an inner electrode, and the outer electrode support is provided with an outer electrode. The outer electrode is arranged at one end of the outer electrode bracket far away from the rotary joint of the handle and the outer electrode bracket and is connected with the outer electrode bracket, and a limiting part is arranged on one side of the outer electrode bracket far away from the outer electrode; the knob assembly is rotatably arranged on the handle in a penetrating mode and comprises a knob and a limiting block which are connected with each other, a plurality of abutting faces and a plurality of transition faces are formed on the peripheral wall of the limiting block, a transition face is arranged between any two adjacent abutting faces, the abutting faces are arc-shaped curved faces, the curvature centers of the abutting faces are the same, and the curvature centers of the transition faces are the same. The limiting part can abut against any abutting face for limiting so as to adjust the distance between the end, away from the handle, of the inner electrode and the outer electrode. According to the scheme, the subcutaneous multi-depth use function of the electrode can be achieved.

The application discloses a kind of magnet two-way pressing forming equipment and process for bonding neodymium iron boron, belong to magnetic powder die pressing field.The device includes: stamping mechanism, including frame body, the stamping seat is vertically slidably installed on the frame body, the frame body is installed for driving the drive assembly of the stamping seat movement, the upper punch is installed on the stamping seat;Outer die mechanism, including the lower die plate vertically slidably installed on the frame body, magnetic powder is poured into lower die plate, the transmission assembly for driving the lower die plate movement is installed on the frame body.Drive assembly and transmission assembly are driven to drive upper punch and lower die plate to approach each other to complete stamping, this kind of pressing mode effectively avoids the problem that the upper half area and lower half area of magnetic powder located in lower die plate are significantly different in stress, which leads to subsequent uneven pressing density, avoid shrinkage rate inconsistency in subsequent solidification process to appear defective product, and effectively guarantee the performance of magnet.

A material conveying structure for a metal part heat treatment furnace comprises a main supporting frame, a driving sliding block, a movable supporting table, a conveying belt, a main conveying belt supporting roller, an auxiliary supporting roller, a conveying driving motor, an adjusting screw rod, a main driving rod and a screw rod driving motor. The movable table connecting groove is connected with a movable supporting table, the movable supporting table slides in the movable table connecting groove, auxiliary supporting roller connecting grooves are formed in the side face of the movable supporting table, a main supporting roller connecting groove is formed in the side face of the movable supporting table, and an array set composed of the auxiliary supporting roller connecting grooves is located in the center. The two sets of main supporting roller connecting grooves are distributed in the two sides of the auxiliary supporting roller connecting groove array set, the auxiliary supporting rollers are rotationally connected with the auxiliary supporting roller connecting grooves, and the main conveying belt supporting rollers are rotationally connected with the main supporting roller connecting grooves.

The invention provides a PVA (Polyvinyl Alcohol) film production line which comprises a reaction kettle, a filter group, a defoaming standing kettle group, a vacuum defoaming machine, a precise flow pump, a casting die head device, an annular steel belt conveyor, a sectional type drying box assembly and a winding machine, a discharging port of the filter set is connected to a feeding port of the defoaming standing kettle set through a pipeline, a discharging port of the defoaming standing kettle set is connected to a feeding port of the vacuum defoaming machine through a pipeline, and a discharging port of the vacuum defoaming machine is connected to a feeding port of the casting die head device through the precise flow pump. The annular steel belt conveyor is installed below a discharging port of the casting die head device, the sectional type drying box assembly is installed on the rear section of the annular steel belt conveyor, and the winding machine is installed at the front end of the annular steel belt conveyor. A complete, coherent and optimal production line framework is formed, and the long-standing comprehensive problem that quality, efficiency and cost are difficult to consider at the same time in PVA film production is solved.

The invention provides a material returning mechanism suitable for rod materials with different lengths. The material returning mechanism comprises a machine base, an ejector rod, a guide sliding sleeve, a die holder, a female die and an ejector pin. The ejector rod is arranged in the guide sliding sleeve in a sliding manner, and a limiting structure is arranged on the ejector rod; the guide sliding sleeve is installed in the through hole of the machine base in a front-back adjustable mode and connected with the adjusting assembly. The driving assembly is used for driving the ejector rod and the ejector pin to move forwards to eject the workpiece out of the female die. The adjusting assembly can adjust the limit stroke of retreating of the ejector rod when the ejector rod resets by changing the front-back position of the guide sliding sleeve. By adjusting the position of the guide sliding sleeve and flexibly controlling the return end point of the ejector pin, enough avoiding space is provided for rod materials with different lengths, the material returning mechanism can adapt to the production requirements of workpieces with different lengths, enough feeding avoiding space can be reserved for longer rod materials only by adjusting the position of the guide sliding sleeve during production changing, and the production efficiency is improved. The problems that a traditional fixed stroke mechanism is tedious in model changing and prone to interference are solved, and the machining flexibility and the production changing efficiency of equipment are remarkably improved.

The utility model discloses a detachable screening assembly relates to screening equipment technical field. It aims at solving the problem of existing screening assembly dismounting complex, fixed not firm, the problem of not strict sealing. The utility model discloses a technical scheme, including: screen frame assembly, detachably installed in the screen frame assembly's screen net assembly and a detachable connecting rod. The frame body inner wall of screen frame assembly is equipped with the first threaded structure, and the screen net assembly's net frame outer wall is equipped with the second threaded structure that cooperates with the first threaded structure. The net frame is equipped with the mounting portion for detachably installing the connecting rod. When installing, the screen net assembly is rotated through the connecting rod drive, realizes its quick threaded connection with screen frame assembly. The screen net assembly top still is equipped with the flexible ring board, is used for sealing and compacting. The utility model has the advantages of convenient dismounting, fixed reliable, good sealing, the operation friendly, has improved the efficiency and reliability of screen net replacement significantly.

This invention relates to the technical field of material conveying and discloses an underground coal and gangue separation and conveying device, including a first conveying component, a screening component, and a separation component. The first conveying component includes a first rotary drive and a first belt, with the first rotary drive connected to the first belt. The screening component includes a screening drive and a screening plate. The screening drive is used to drive the screening plate to move along a preset trajectory, and the first rotary drive can drive the first belt to move, so as to convey the load on the first belt to the screening plate. The separation component includes a first inclined track, a first monitoring component, and a force-applying drive. The first inclined track is located below the outlet of the screening plate. The first monitoring component is used to acquire an image of the load falling from the outlet of the first inclined track. The force-applying drive applies an external force to the gangue in the load according to the image to change the falling trajectory of the gangue, thereby realizing the separation of coal and gangue.

The application discloses a multifunctional polishing device and an adjusting method thereof, which comprises a stroke adjusting module and an area adjusting module, aims to realize the reciprocating movement of a polishing head, and can adjust the reciprocating stroke and the polishing area according to the size of a workpiece. The two modules are slidably connected through dovetail grooves, the stroke adjusting module changes the rotary movement of a motor into reciprocating linear movement, so that the reciprocating polishing is realized. The adjustment comprises the adjustment of the polishing area and the reciprocating stroke, the reciprocating stroke is adjusted by manually rotating a first worm, the polishing area is adjusted by rotating a second worm, and the device can adapt to different workpiece sizes and polishing requirements by adjusting the reciprocating stroke and the polishing area. The application has the advantages of simple structure, convenient installation, compactness and reliability, stable adjustment and the like. The application has a wide application range and is suitable for the workpiece parts needing polishing in various limited spaces.

The utility model relates to the technical field of positioning mechanisms for processing metal casting blanks, and particularly discloses a positioning mechanism for processing blanks, which comprises an operating table, a rotatable disc-shaped storage seat is arranged at the top of the operating table, a meshing cavity is arranged in the operating table, and a transmission component for driving the storage seat to rotate is arranged in the meshing cavity. A positioning clamp capable of sliding up and down is arranged on each lifting adjusting assembly; the positioning clamp comprises a sliding base connected with the lifting adjusting assembly, two electric telescopic rods horizontally arranged on the side, away from the lifting adjusting assembly, of the sliding base, mounting bases fixed to the output ends of the electric telescopic rods correspondingly, and a rotary clamping block hinged between the two mounting bases through a horizontal rotating shaft. According to the positioning machine, through a bidirectional intelligent clamping structure and a two-stage turbine worm transmission system, high-precision positioning and self-adaptive clamping force control of a special-shaped blank are achieved, and the maintenance cost is reduced while the machining efficiency is improved.

The utility model provides a kind of positioning device of mould, belong to mould manufacturing technical field, the positioning device of this mould includes positioning seat body, positioning column, adjusting mechanism, locking mechanism and guiding mechanism;Positioning seat body is hollow cylinder, bottom is equipped with bottom surface, and circular through-hole is opened in the center of bottom surface;Stepped positioning column is composed of lower section cylinder and the upper section cylinder of greater diameter;Adjusting mechanism contains adjusting seat and adjusting screw rod, adjusting seat is fixed in seat body side wall, adjusting screw rod passes through adjusting seat and extends into seat body interior, and its end abuts on the side wall of upper section cylinder to adjust height;Locking mechanism is composed of locking bolt and locking block, locking block is placed in seat body, locking bolt is connected with locking block by thread in radial through seat body side wall, and locking block inner arc surface and upper section cylinder outer wall are pasted to realize lock solid;Guiding mechanism contains guide sleeve and guide rod, guide sleeve is fixed in seat body top end, guide rod passes through guide sleeve and is fixedly connected with the top end of upper section cylinder, and it is ensured that column lifting direction is accurate and unbiased.