71results about How to "Quick height adjustment" patented technology

A table or desk assembly (20) includes a base having a pair of legs (24), a worksurface (22) supported by and between the pair of legs, and a rapid, counterbalanced height adjustment mechanism interposed between the legs and the worksurface for providing adjustment in the elevation of the worksurface. The height adjustment mechanism includes a pair of high lead rotatable threaded rods (32) engaged with a mating stationary threaded member (33) associated with each leg. A handle (36) is engageable with one of the threaded rods for imparting rotation to the threaded rod, and a synchronizing arrangement, such as a sprocket (38) and chain system (40), is interconnected with the other of the threaded rods for rotating the threaded rods together. A lift assist or counterbalancing mechanism applies an upward bias, such as to the worksurface, to counteract the weight of the worksurface and any loads supported by the worksurface. The counterbalancing mechanism may be in the form of a cylinder assembly (54) having a biased retractable and extendible member, which is interconnected with each of the threaded rods via a cable (66) and pulley (68) arrangement. Alternatively, the lift assist or counterbalancing mechanism may be in the form of constant force spring arrangements (76), each of which has an extendible and retractable member. A retainer arrangement (90) is interposed between the crank or handle member (36) and the worksurface, for preventing inadvertent rotation of the threaded rod and thereby maintaining the elevation of the worksurface.

The invention relates to a robot capable of synchronously climbing stairs. The robot comprises a tray component, a first walking component, a second walking component and a rotation driving device, wherein the tray component comprises a first support member, a second support member and a third support member, of which the mutual distance and height can be adjusted according to stair steps, the first walking component and the second walking component are respectively connected to the lower ends of the first and third support members and are the same in structure, each walking component comprises an axle, a left wheel member and a right wheel member which are located at the two ends of the axle, the two wheel members are symmetric and identical in structure, shape curves of each wheel rim consist of end-to-end-connected Archimedean spirals and arcs, then, the distance from the wheel rims to the axes of the axles is changed along with rotation, and the rotation driving device is mounted at the lower end of the second support member, is in transmission connection with the first walking component and the second walking component respectively and drives the first walking component and the second walking component. The robot can bear a heavy load, keep horizontal, stably and automatically climb the stairs and walk on flat ground.

A table or desk assembly (20) includes a base having a pair of legs (24), a worksurface (22) supported by and between the pair of legs, and a rapid, counterbalanced height adjustment mechanism interposed between the legs and the worksurface for providing adjustment in the elevation of the worksurface. The height adjustment mechanism includes a pair of high lead rotatable threaded rods (32) engaged with a mating stationary threaded member (33) associated with each leg. A handle (36) is engageable with one of the threaded rods for imparting rotation to the threaded rod, and a synchronizing arrangement, such as a sprocket (38) and chain system (40), is interconnected with the other of the threaded rods for rotating the threaded rods together. A lift assist or counterbalancing mechanism applies an upward bias, such as to the worksurface, to counteract the weight of the worksurface and any loads supported by the worksurface. The counterbalancing mechanism may be in the form of a cylinder assembly (54) having a biased retractable and extendible member, which is interconnected with each of the threaded rods via a cable (66) and pulley (68) arrangement. Alternatively, the lift assist or counterbalancing mechanism may be in the form of constant force spring arrangements (76), each of which has an extendible and retractable member. A retainer arrangement (90) is interposed between the crank or handle member (36) and the worksurface, for preventing inadvertent rotation of the threaded rod and thereby maintaining the elevation of the worksurface.

The invention discloses a novel calibration method for a bridge support device in an operation period. The method comprises the following steps: acquiring a relational expression between a lateral loading force standard value and a vertical actual bearing capacity of a support device, repeatedly applying lateral loading forces with different values to the support device according to requirements,recording standard values of loading points, and simultaneously acquiring the vertical actual bearing capacity of the corresponding support device when the lateral loading force values are different;and forming vertical force calibration according to the actual vertical bearing capacity of the support device obtained according to the different lateral loading force values and the vertical monitoring force value of the support at the same moment. A height adjusting mechanism is arranged on the top face of a support body, the support body is placed in a bottom basin with a basin cavity structure, a force measuring bearing body is arranged on the bottom face of the support body, a sensing device is installed on the side face of the force measuring bearing body, and a signal line of the sensing device penetrates through the side wall of the bottom basin to be connected with an external data collecting system. According to the invention, the accuracy and reliability of monitoring data after the support sensing device is replaced can be ensured, and the height of the support can be accurately adjusted.

The invention relates to a tubular-elastic part clamping device comprising a base (7), a washer (5), a step type positioning rod mechanism, a quick-opening rotary screw (8) and a pressing plate (2). The base is provided with a cavity inside and two rotary shaft holes in the top surface. The washer (5) is provided with an inner hole coaxial with the cavity of the base (7) in the middle, two sides of the washer (5) are respectively connected with the base (7) and a tubular-elastic part (3) in a contact manner. The step type positioning rod mechanism sequentially penetrates the cavity of the base (7), the inner hole of the washer (5) and the tubular-elastic part (3). The quick-opening rotary screw (8) is mounted in the rotary shaft hole of one end of the base (7). The pressing plate (2) is provided with a waist hole allowing the tubular-elastic part (3) to penetrate in the middle, one end of the pressing plate (2) is mounted in the rotary shaft hole of the other end of the base (7), and the other end of the pressing plate (2) is provided with a notch for fixing the quick-opening rotary screw (8). Compared with the prior art, the tubular-elastic part clamping device has the advantages of simple structure, stability in clamping, convenience in use and the like.

The invention relates to a multifunctional flat-panel television commutator which comprises a bracket, wherein an elevator mechanism is arranged on the bracket, a flat-panel television is arranged on the elevator mechanism, the elevator mechanism is provided with a flat-panel television installation platform, a worm gear mechanism is arranged on the flat-panel television installation platform andconnected with an electric motor, and the flat-panel television is arranged on the worm gear mechanism; and a rotating machine is arranged between a top lead screw and the flat-panel television installation platform, the electric motor and the rotating machine are respectively provided with a switch. The elevator mechanism can be used for rapidly and randomly adjusting the height of the flat-panel television, the rotating machine can be used for rapidly and randomly adjusting the horizontal angle of the flat-panel television, the worm gear mechanism can be used for rapidly and randomly adjusting the vertical angle of the flat-panel television, the power source of each mechanism can be switched on or off by virtue of manual operation or remote control. The multifunctional flat-panel television commutator provided by the invention is convenient to use and move and can be adjusted at any angle as required.

A mounting assembly is described. The mounting assembly includes: (a) a pipe having a first threaded end and a second threaded end; (b) a base component having a base portion and a threaded connecting portion; (c) a top component having a top portion and a threaded portion, the top component being capable of supporting a photovoltaic panel thereon; and (d) wherein the first threaded end of the pipe and the threaded connecting portion of the base component include threads such that the first threaded end rotatably engages in a first direction with the threaded connecting portion, and the second threaded end of the pipe and the threaded portion of the top component include threads such that the first threaded end rotatably engages in a second direction with the threaded portion of the top component, the first direction is opposite to the second direction, and the first threaded end and the second threaded end are substantially cylindrical.

A method of manufacturing an oscillator device having an oscillator supported relative to a fixed member by a torsion spring for oscillation around a torsion axis and arranged to be driven at a resonance frequency, which method includes a first step for determining an assumed value of an inertia moment weight of the oscillator, a second step for measuring the resonance frequency, a third step for calculating a spring constant of the torsion spring, from the assumed value of the inertia moment weight and the measured resonance frequency obtained at said first and second steps, a fourth step for calculating an adjustment amount for the inertia moment of the oscillator or for the spring constant of the torsion spring, based on the spring constant calculated at said third step and a target resonance frequency determined with respect to the resonance frequency of the oscillator, so as to adjust the resonance frequency to the target resonance frequency, and a fifth step for adjusting the resonance frequency of the oscillator to the target resonance frequency based on the calculated adjustment amount.

The invention discloses a star wheel transmission mechanism for conveying bottles. The star wheel transmission mechanism comprises a lower star wheel tray, a support column fastened on an upper wheel tray, and a lower protective bottle-shaped plate fastened on the support column, and is characterized in that a mounting base capable of moving up and down is sleeved on the support column, the lower star wheel tray is fastened on the mounting base, multiple grooves are distributed along the axial direction of the side wall of the support column, the side wall of the mounting base is provided with screw holes, screw rods are arranged in the screw holes, and the end parts of the screw rods can be clamped in the grooves and prop against the bottom walls of the grooves; when the height of the lower star wheel tray needs to be regulated, firstly, the screw rods are twisted, the end parts of the screw rods are separated from the grooves, then the lower star wheel tray is moved to the groove corresponding to the target height along the support column, furthermore the screw rods are twisted until the end parts of the screw rods are clamped into the grooves and prop against the bottom wall of the grooves, so that the height regulation operation of the lower star wheel tray can be completed, and the height regulation operation of the lower star wheel tray can be rapidly completed under the condition that the support column is not replaced.

The invention discloses a subsoiler stress testing device and belongs to the agricultural mechanical operation component detection technology. A screw rod provided with a handle is assembled on a slideway body seam. An upper nut and a lower nut are assembled on the screw rod. A frame seam is assembled on the slideway body seam in a vertically movable mode. The upper nut and the lower nut are fixedly connected with the frame seam respectively. Two upper connecting plates arranged opposite to each other and two lower connecting plates arranged opposite to each other are installed on a subsoiler assembly through hinges respectively. The subsoiler assembly is mounted on the frame seam in the mode that an upper pull-press sensor is connected with the frame seam and the hinge of the upper connecting plates and a lower pull-press sensor is connected with the frame seam and the hinge of the lower connecting plates. The subsoiler assembly is vertically positioned on the frame seam. A mounting plate is fixedly mounted on the side portion of the slideway body seam. When used for testing stress, the subsoiler stress testing device is easy, convenient and fast to adjust, accurate in height position, good in overall toughness, high in testing accuracy, low in operation cost, capable of being used repeatedly, and wide in application range.

The invention discloses a large-stroke high-sensitivity turning tool nose height precision adjustment device. The large-stroke high-sensitivity turning tool nose height precision adjustment device iscomposed of a foundation support, a moving mechanism (dovetail guide rail), a movable tool apron, a fixed tool apron, a locking screw, a rough adjustment screw, a fine adjustment screw, pre-tighteningscrews and a fine adjustment handle. The foundation support is of a structure which is located through a key and locked through a T-shaped groove. The movable tool apron is of a stable structure, wherein the upper end of the stable structure suspends and extends, and the stable structure is symmetrical in the left-right direction. The fixed tool apron is of a structure which is slotted from the left side to achieve the large hole diameter and achieves the lever effect. All components are located on the same central axis. The large-stroke high-sensitivity turning tool nose height precision adjustment device can be widely applied to a precision or super-precision lathe, and height adjustment with respect to the stroke resolution, from the millimeter scale to the micron scale, of a turning tool can be achieved.

The invention provides a novel multifunctional supporting frame capable of adjusting height and angle. The novel multifunctional supporting frame capable of adjusting the height and angle mainly includes an extensible base device, a spiral height adjusting device, an extensible cantilever device and a box body fixing device. The novel multifunctional supporting frame capable of adjusting the height and angle is characterized in that the multifunctional support frame suitable for different heights and angles can be provided by the adjustment of the heights and angles of the extensible cantilever device and the box body fixing device through the spiral height adjusting device under the support of the extensible base device. According to the novel multifunctional supporting frame capable of adjusting the height and angle, the stability of a supporting frame structure is realized by the extensible base device, the adjustment of the height of the extensible cantilever and the box body is realized by the spiral height adjusting device, the adjustment of the extensible state of the box body fixing device is realized by the extensible cantilever device, and the fixing of the box body withdifferent structures and the sizes is realized by the box body fixing device.

The invention discloses a high-strength structure ceramic engraving machining device with double supporting and positioning mechanisms, and relates to the technical field of manual ceramic machining tools. The problem that most of existing machining devices cannot intensively contain slag generated by engraving, so that the slag is scattered and falls off to pollute the ground, and cleaning is inconvenient. The high-strength structure ceramic engraving machining device with the double supporting and positioning mechanisms comprises a base, a slag receiving disc and a round sliding seat, wherein a main supporting column is vertically welded to the middle of the top end of the base, the round sliding seat is arranged on the upper half section of the main supporting column in a sleeving and sliding mode, a rotating wheel and a worm are sequentially arranged on the lower half section of the main supporting column from top to bottom in a rotating and inserted mode, the rotating wheel facesthe left side and is directly arranged on the main supporting column in a penetrating mode, and the worm is located on the right side of the main supporting column. According to the device, a left half-cutting box and a right half-cutting box can be inserted and fixed to the circular sliding base through two inserting frames, and the two half-cutting boxes are in butt joint with each other and positioned to form the complete slag receiving disc.

The invention relates to the technical field of orthopaedic nursing equipment, and discloses a limb support for orthopaedic nursing purpose. The limb support for the orthopaedic nursing purpose comprises a base; first chutes are symmetrically formed on two sides of the upper end of the base; first through holes are symmetrically formed on side walls far away from each other of the two first chutes; first screw rods are in rotary connection with the interior of the two first through holes via first rolling bearings; two ends of both of the two first screw rods extend to the outside of the corresponding first through holes; close ends of the two first screw rods are in rotary connection with side walls of the corresponding first chutes via second rolling bearings; motors are symmetrically fixed on both the left side wall and the right side wall of the base; the other ends of the two first screw rods are both in fixed connection with output ends of the corresponding motors; and first sliders are in threaded connection with rod walls of both of the two first screw rods. The limb support for the orthopaedic nursing purpose is adaptive to patients with different body shapes for the sizeof the limb support can be conveniently adjusted; moreover, height of the limb support can also be rapidly adjusted so as to make the patients more comfortable.

The invention discloses a movable blackboard for English teaching. The movable blackboard comprises a supporting frame, a plate body, a left column and a right column; the supporting frame is of a slot-shaped mechanism with an opening at the top, and the plate body is disposed in the supporting frame; straight tooth surfaces are symmetrically disposed on the left and right side faces of the platebody, and a driving gear is rotatably connected to the right side of the front end surface of the supporting frame; a limit gear is rotatably connected with the left side of the front end surface of the supporting frame, and the limit gear meshes with the left straight tooth surface of the plate body; and a locking mechanism is disposed below the limit gear, and the left column and the right column are fixed to the bottom of the supporting frame. The movable blackboard has clever structure and reasonable design and can adjust the height of the plate body according to the height of a teacher, and the height adjustment operation is simple and quick; and at the same time, the movable blackboard can quickly switch between the static placing state and the moving state and achieves the effect ofsaving time and labor, the stability in the static placing state is high, and the development of English teaching work is facilitated.

The invention discloses a mobile lighting system of an underground utility tunnel. The mobile lighting system of an underground utility tunnel includes a guide rail, mobile support frames, vertical lamp poles, lighting holders, floodlights and traction devices, wherein the guide rail is arranged on the top wall of the underground utility tunnel, the mobile support frames are matched with the guiderail, and the vertical lamp poles are connected with the mobile support frames. The lighting holders are connected with the lower ends of the vertical lamp poles, the floodlights are arranged on thelighting holders, and the traction devices are connected with the lower sides of the mobile support frames. An anode sliding contact end and a cathode sliding contact end of power supply, matched witheach other, are correspondingly arranged on the guide rail and the mobile support frames. The mobile lighting system of underground utility tunnel can slip with maintainers by designing a lighting device. The lighting of the overhaul is guaranteed without the need of holding or using other tools by the maintainers, the mobile lighting system of underground utility tunnel is convenient to use, andthe daily lighting energy consumption in the tunnel is reduced.

The invention discloses a supporting platform of a reinforced concrete supporting beam and a using method thereof, and relates to the technical field of underground geotechnical engineering. The supporting platform aims at solving the problems that an existing supporting device of an existing reinforced concrete supporting beam is large in erection work amount, low in working efficiency and incapable of being rapidly moved and repeatedly used. The supporting platform comprises a supporting frame body, a plurality of telescopic vertical columns and a plurality of walking wheels, wherein at least two support units of the supporting frame body are detachably connected through a plurality of diagonal bracings; each support unit comprises two supporting vertical columns, inclined supports and bottom cross rods; the inclined supports and the bottom cross rods are fixedly connected between the two supporting vertical columns; each telescopic vertical column comprises a coarse adjustment rod piece, a fine adjustment rod piece and a top plate, wherein the coarse adjustment rod piece, the fine adjustment rod piece and the top plate are coaxially and sequentially connected; the coarse adjustment rod piece is provided with a plurality of pin holes or bolt holes corresponding to the supporting vertical columns, so that the coarse adjustment rod piece arranged on the supporting vertical columns in a sleeving mode can adjust the telescopic length of the coarse adjustment rod piece according to construction requirements and is movably connected with the supporting vertical columns, and coarse adjustment of the height of the supporting platform is achieved; and the fine adjustment rod piece is fixedly connected to the top of the coarse adjustment rod piece, so that fine adjustment of the height of the supporting platform is achieved.

The invention discloses a device for improving the comfort level of an automobile seat and increasing the sitting space, which comprises a seat cushion height adjusting mechanism and a backrest adjusting mechanism. The seat cushion height adjusting mechanism is provided with a shear type lifting mechanism which is arranged between a seat cushion framework and a seat upper slide rail, and the upperend and the lower end of the shear type lifting mechanism are respectively connected with a seat cushion side plate of the seat cushion framework and the seat upper slide rail. The backrest adjustingmechanism comprises a backrest integral adjusting mechanism and a backrest segmented adjusting mechanism. An R point of the backrest integral adjusting mechanism is arranged below an H point, and thebackrest integral adjusting mechanism is connected with the seat cushion side plate through a backrest lower connecting plate 2 and a backrest angle adjuster. The backrest segmented adjusting mechanism is formed by connecting the backrest lower connecting plate 2 and a backrest upper connecting plate 1 and is composed of a motor driving device and a limiting or locking structure. According to theautomobile seat device, the footrest space of passengers in the rear row is increased, the backrest adjusting comfort is high, and different requirements of different crowds for the seat backrest canbe met.

The invention discloses an image-text plate for geological exploration design. The board comprises a base, hinges are welded to the outer walls of the two sides of the base, L-shaped fixing plates arewelded to the outer walls of one sides of the hinges, connecting holes are formed in the outer walls of the tops of the L-shaped fixing plates, supporting rods are welded to the outer wall of the topof the base, and electric telescopic rods are welded to the tops of the supporting rods; a connecting block is welded to each of the tops of the electric telescopic rods, a support is welded to the tops of the connecting blocks, a solar cell panel is welded to the top of the support, a fixing block is welded to the outer wall of one side of each connecting block, and an image-text plate is hingedto the ends, away from the connecting blocks, of the fixing blocks through hinges. The image-text plate can be pushed to ascend and descend through operation of the electric telescopic rods, the height of the image-text plate can be adjusted more easily, conveniently and rapidly, the image-text plate and the hinges are controlled to be matched with each other through operation of the electric push rods, the angle of the image-text plate can be adjusted, the image-text plate can be suitable for various occasions, and the time needed by adjustment is shortened; and the work efficiency is improved.

The invention belongs to the technical field of corn seeding, and discloses an on-dam region whole-plant silage corn seeding device which comprises a frame, the seeding mechanism comprises a feed box and a discharge pipe which are fixed on the frame, and the discharge pipe is mounted on the feed box; the ridging mechanism comprises a fixing frame and a ridging roller, and the ridging roller is rotationally installed on the fixing frame; the film laminating mechanism comprises a film hanging roller and a film pressing roller, and the film hanging roller and the film pressing roller are both mounted on the frame; according to the silage corn seed sowing device, through cooperation of the structures such as the material guiding pipe, the rotating rod, the rotating disc and the material discharging groove, the rotating disc can rotate and receive silage corn seeds, so that the silage corn seeds are evenly scattered to the periphery through the material discharging groove, the silage corn seeds can be evenly distributed when being sown, and the silage corn seed sowing efficiency is improved. Accumulation and concentration of silage corn seeds are prevented, and the seeding effect is greatly improved.

The invention provides a base plate assembly and a digital printing apparatus. The digital printing apparatus includes a printed material. The base plate assembly comprises slide rails including a first slide rail and a second slide rail; a base plate having one end connected to the first slide rail and the other end connected to the second slide rail; an adjusting component installed on the sliderails and connected with the base plate, wherein the adjusting component can be adjusted to make the base plate move to be parallel with the printed material. According to the technical solution, a local part of the base plate can be moved up and down relative to the slide rails by the adjusting component so that a purpose of leveling the base plate can be realized and that the bse plate and theprinted material are kept in parallel. Thus, when printing is performed by the digital printing apparatus, a printing nozzle and the printed material are parallel to each other so that deficiency in machining accuracy and assembly accuracy of the base plate can be compensated, thereby providing a printed matter with good quality.

The invention provides a button supply device for a sewing machine. The button supply device can uniformly perform depth adjustment of a button storing part. A horizontal feeding mechanism (10) of the button supply device is provided with: a rotary body (20) provided with a plurality of button storing parts (23, 24, 25) opening at the radial external side, at an interval of a certain angle and along the circumferential direction; a drive unit making the rotary body rotate and conveying buttons in the plurality of storing parts; and an outer circumferential cam (50) installed on the rotary body and capable of adjusting the rotation angle with the rotation center of the rotary body as the reference, for the radial inner side, determining the depths of the plurality of button storing parts, and provided with a plurality of cam parts (55) with the same shape and at an interval of the angle the same with that of the plurality of button storing parts.

The invention discloses a handheld operating apparatus, which comprises a base (2), a cutting tool (10) detachably connected with the base, an operating rod (3) arranged on the base and roller wheels (8a and 8b) which are connected with the base and used for supporting the base, wherein the roller wheels are provided with a wheel shaft (9); the base is provided with a gear slot (24); the wheel shaft (9) is meshed in the gear slot and can be selectively locked at different places in the slot through a control piece (20); and the control piece further comprises an operating button (25) for manual control by an operator. Thus, the height of the roller wheels relative to the base can be adjusted effectively so as to realize cutting height adjustment.

The invention relates to the field of pneumatic punching machine equipment, in particular to a fastening type pneumatic punching machine capable of automatically adjusting height. The technical problem to be solved by the invention is to provide the fastening type pneumatic punching machine which can automatically adjusting the height to adapt to different products, meanwhile, can carry out punching stably, and is improved in service life of a foot pedal switch. The fastening type pneumatic punching machine capable of automatically adjusting the height comprises a workbench, a moving groove, control switches, fastening assemblies, a pedal control assembly, a height adjusting assembly, a mounting frame assembly, buffer equipment, a punching connecting frame, a timer, a switch set and the like, wherein a moving groove for guiding a punching part to move is formed in the top surface of the workbench; the supporting base is fixedly connected to the rear wall of the workbench; the two control switches are fixedly connected to two side walls of the workbench in sequence; and the fastening assemblies are fixedly connected to the front wall of the workbench. According to the fastening typepneumatic punching machine, the effects that the height of the punching machine can be conveniently and automatically adjusted to adapt to the different products, meanwhile, punching can be carried out stably, and the service life of the foot pedal switch can be prolonged are achieved.

The invention discloses a wood board cutting device for furniture production, and particularly relates to the technical field of wood board cutting equipment. The wood board cutting device comprises aworkbench, wherein a stand column is fixedly connected to one side of the workbench; a top plate is fixedly connected to one side of the stand column; the top plate is positioned at the top of the workbench; a first hydraulic cylinder is fixedly connected to one side of the top plate; a supporting seat is fixedly connected to a piston rod of the first hydraulic cylinder; a supporting plate is fixedly connected to the bottom of the supporting seat; and a rotating shaft is arranged in the supporting seat. According to the wood board cutting device, the first hydraulic cylinder, the supporting seat, the supporting plate, a second hydraulic cylinder and a bottom plate are arranged, so that the transverse positions and the heights of a motor and a cutting wheel can be rapidly adjusted, and then a wood board can be rapidly cut; and meanwhile, the cutting position of the wood board can be rapidly adjusted, finally, a knob and the rotating shaft are arranged, so that the angles of the supporting plate and the second hydraulic cylinder can be rapidly adjusted, finally, the wood board is cut at the opposite angles, the use is more flexible, and the cutting is more convenient.

The invention discloses a star wheel transmission mechanism for conveying bottles. The star wheel transmission mechanism comprises a lower star wheel tray, a support column fastened on an upper wheel tray, and a lower protective bottle-shaped plate fastened on the support column, and is characterized in that a mounting base capable of moving up and down is sleeved on the support column, the lower star wheel tray is fastened on the mounting base, multiple grooves are distributed along the axial direction of the side wall of the support column, the side wall of the mounting base is provided with screw holes, screw rods are arranged in the screw holes, and the end parts of the screw rods can be clamped in the grooves and prop against the bottom walls of the grooves; when the height of the lower star wheel tray needs to be regulated, firstly, the screw rods are twisted, the end parts of the screw rods are separated from the grooves, then the lower star wheel tray is moved to the groove corresponding to the target height along the support column, furthermore the screw rods are twisted until the end parts of the screw rods are clamped into the grooves and prop against the bottom wall of the grooves, so that the height regulation operation of the lower star wheel tray can be completed, and the height regulation operation of the lower star wheel tray can be rapidly completed under the condition that the support column is not replaced.

The invention discloses a waterproof connector for an automobile plug. According to the connector, a connecting rod is arranged in a buffer base, a spring is fixedly connected to the tail end of the bottom of the connecting rod, and side buffer air cushions are fixedly installed in the clamping walls of the left side and the right side of a connector outer shell; adjusting plates are arranged on the edges of the front side and the rear side of the bottom of the bottom base, limiting grooves are formed in the adjusting plates, sliding plates are slidably connected into the limiting grooves, and a lifting base is fixedly installed on the upper surface of a height adjusting plate, so that shaking between the bottom base and the height adjusting plate can be prevented; the connecting seat is more convenient and multi-functional during use, the side buffer air cushions in the left side and the right side of the connector outer shell can also conduct damping and buffering protection on the connector outer shell, so that contact elastic terminals and the positioning clamping base in the connector outer shell are prevented from being damaged due to impact, the durability of the device is improved, and the service life of the device is prolonged.