58results about How to "Shrink freely" patented technology

The invention provides a laser engraving and 3D printing integrated advertising character manufacturing equipment and manufacturing method. The manufacturing equipment comprises a framework, first linear guide rails, a second linear guide rail, a printing spray head component, a laser engraving device, an X-axis driving mechanism, a Y-axis driving mechanism, a Z-axis driving mechanism and a working table, wherein the first linear guide rails are distributed in the Y-axis direction and mounted on the left side and the right side of the framework respectively; the second linear guide rail is distributed in the X-axis direction and arranged on the first linear guide rails in a sliding manner; the printing spray head component is arranged on the second linear guide rail in a sliding manner; the laser engraving device comprises a laser tube and a laser head component; the X-axis driving mechanism drives the printing spray head component and the laser head component to slide along the second linear guide rail; the Y-axis driving mechanism drives the second linear guide rail to slide along the first linear guide rails; the working table is positioned below the printing spray head component and the laser head component correspondingly; the Z-axis driving mechanism drives the working table to move along the Z-axis. The advertising character manufacturing equipment provided by the invention has the advantages of being simple and flexible in manufacturing process.

The invention discloses a portable notebook computer base which is provided with a power supply and is convenient for carrying and use. The base of the invention comprises a base body (100), a power adapter (2), a wire folding device (3) used for folding the input power line of the power adapter (2), a switch component (4), a control circuit, and a DC power output interface (40); the power adapter (2), the switch component (4) and the DC power output interface (40) are electrically connected with a control circuit (5) respectively. The base of the invention can be widely applied in the field of notebook computers.

The invention discloses a combined multi-point deflectometer and a method for measuring the deflection. The novel multi-point deflectometer which can be used for high-precision displacement measurement by a tee-joint water pipe leveling principle and a mechanical elastic deformation test principle comprises a plurality of soft water pipes and hard vertical tee-joint water pipes, wherein the soft water pipes and hard vertical tee-joint water pipes can be spliced at will and are mutually communicated; the hard water pipes are provided with bubbles to ensure that the test pipes are leveled during point testing; the ends of the soft water pipes and the joint sections of the hard water pipes are connected by joints which are easy to splice and have good water tightness; the hard water pipes can be lengthened by section; and an upper section is vertically provided with an elastic deformation gauge of which the lower end is provided with a floater from the top. According to difference before and after structure deformation, the water level in each hard water pipe arranged on the specific measurement point on the structure is still kept horizontal, change happens in the pipe relatively to the horizontal water level, the floater lifts or lowers, buoyancy borne by the combined multi-point deflectometer is changed to cause the reading of the elastic deformation gauge to change, and a reading precision is high.

Using the filter auxiliary agent separated by backwashing from a filter element repeatedly and effectively, the consumption amount of a filter auxiliary agent and the generation of industrial waste can be suppressed. In a filter auxiliary agent pre-coat circuit, a filter auxiliary agent in a pre-coat tank is attached and stacked on a filter element in a filter case, and a filter auxiliary agent layer is formed. In a filter circuit, the filter auxiliary agent layer of the filter element removes sludge in the filter treatment liquid in a main tank. A backwashing circuit breaks down the filter auxiliary agent layer and a sludge layer, separates the filter auxiliary agent layer and the sludge layer by backwashing from the filter element, and circulates to the pre-coat tank. After repeating these steps a plurality of times, the filter auxiliary agent and sludge separated by backwashing are taken out to the exterior.

The invention discloses a portable power adapter which has small occupied space, aesthetic and harmonic appearance, and convenient deploying and collecting and carrying. The invention comprises a housing, a power input and an output line (51, 53), a power convention circuit (6), and a wire lock-up mechanism; the center of the housing is provided with a hollow stepped shaft column (2), the external sidewall of the shaft column (2) is provided with a ring diaphragm (22), an upper and a lower rotating disc (31, 32) is provided above and below the ring diaphragm (22), the stepped column surface of the upper and the lower rotating discs are respectively provided with external conducting layers (301, 302), the shaft column (2) is provided with an inner conducing layers (201, 202), the power input and the output lines (51, 53) are connected with the external conducting layers (301, 302) respectively, the input and the output ends of the power convention circuit (6) are connected with the inner conducting layers (201, 202), an upper and a lower twisting spring (41, 42) are connected between the upper and the lower rotating discs (31, 32) and the shaft column (2), and the power input and the output lines (51, 53) are wound the periphery of the upper and the lower rotating discs (31, 32).

Using the filter auxiliary agent separated by backwashing from a filter element repeatedly and effectively, the consumption amount of a filter auxiliary agent and the generation of industrial waste can be suppressed. In a filter auxiliary agent pre-coat circuit, a filter auxiliary agent in a pre-coat tank is attached and stacked on a filter element in a filter case, and a filter auxiliary agent layer is formed. In a filter circuit, the filter auxiliary agent layer of the filter element removes sludge in the filter treatment liquid in a main tank. A backwashing circuit breaks down the filter auxiliary agent layer and a sludge layer, separates the filter auxiliary agent layer and the sludge layer by backwashing from the filter element, and circulates to the pre-coat tank. After repeating these steps a plurality of times, the filter auxiliary agent and sludge separated by backwashing are taken out to the exterior.

The invention relates to the field of a cable winding device for a robot using an ultra-flexible wear-resistant cable, in particular to a cable winding device for a robot using an ultra-flexible wear-resistant cable. The cable winding device comprises a machine hand body, a cable wire, a winding mechanism, a triggering mechanism, a damping mechanism and a heat dissipation mechanism. The cable wirecan be freely rolled under the movement of the machine hand body through the cooperation between the cable wire and the winding mechanism, the cable wire is prevented from blocking and pulling off, meanwhile, the cable wire can stop working after the machine hand body receives the instruction by touching the triggering mechanism when the cable wire is accidentally stuck, damage of the machine hand body is prevented, the cable wire can guide and slow the cable wire through the damping mechanism in the winding process, the cable wire cannot be pulled or blocked by pressure or elasticity duringmovement, damage to the machine hand body is caused, movement of the cable wire enables the heat dissipation mechanism to work, so that heat dissipation and blowing are conducted on other mechanisms in the machine hand body, and the service life of the machine hand body is prolonged.

The invention provides a three-cavity balloon catheter which is used for solving the problem that a balloon catheter in the prior art does not have the cutting function. The three-cavity balloon catheter comprises a catheter head, the near end of the catheter head is connected with a balloon and a three-cavity tube, the three-cavity tube is connected with a handle outlet, the far end of the balloon is conical, the boundaries of the two sides of the balloon are each provided with a developing material tag block, the near end of the balloon is connected with the outer layer of the three-cavity tube, cavity channels of the three-cavity tube include the first cavity channel through which a guide wire can penetrate, the second cavity channel where medicaments can be injected, and the third cavity channel with a blood vessel knife, a knife storage area is arranged at the far end of the third cavity channel, and the blood vessel knife is arranged in the knife storage area. The three-cavity balloon catheter can break through intima to enter a true lumen in the interventional operation process, endangium of a false lumen can be cut open or broken through according to requirements, a lesion section lumen is cut for passing, and therefore repeated withdrawing and repeated puncturing of the balloon catheter can be avoided.

A mechanical lock telescopic baton utilizing a lamp tube as a button comprises a hollow handle pipe, a middle end pipe and a top end pipe and further comprises a releasing mechanism and a lamp tube external member. A middle end clamp lock is arranged at the tail end of the middle end pipe, and a top end clamp lock is arranged at the tail end of the top end pipe. A first clamp groove and a second clamp groove which correspond to the middle end clamp lock and the top end clamp lock are formed in the front end of the handle pipe and the front end of the middle end pipe correspondingly. The releasing mechanism comprises a releasing rod, a positioning cover and a retractable pressing part. One end of the releasing rod is fixed to one end of the positioning cover. The retractable pressing part is arranged at the other end of the positioning cover through a spring. The releasing rod is arranged in the handle pipe and fixedly arranged at the tail end of the handle pipe through the positioning cover. The lamp tube external member comprises a hollow fixing sleeve and the lamp tube, wherein the lamp tube is movably arranged in the hollow fixing sleeve, and the front end of the hollow fixing sleeve is in threaded connection with the tail end of the handle pipe. The tail end of the lamp tube abuts against the retractable pressing part, and a lighting lamp at the other end of the lamp tube is limited through the edge at the tail end of the hollow fixing sleeve.

The invention discloses a claw disc mechanism of a noodle grabbing machine. The claw disc mechanism comprises a shell, a mainboard, a claw disc and a movable core, wherein inward protruding parts are arranged at the contact part between the shell and the mainboard, and the claw disc is formed by combining a plurality of claw disc blocks; the movable core is arranged in the claw disc; the claw disc is provided with outward protruding edges; the protruding edges can turn at a certain angle around the protruding parts; the movable core is provided with two disc-shaped protruding parts which are parallel to each other; the conical hole walls of the claw disc are provided with circular protruding parts clamped between the two disc-shaped protruding parts; tightening elastic parts are arranged at the periphery of the claw disc in a winding manner. The movable core is drawn up and down in the ring-shaped claw disc, the claw disc blocks are driven to turn at a certain angle around the protruding parts of the shell by the disc-shaped protruding parts on the movable core, and thus claws on the claw disc blocks can stretch and contract. When the claw disc mechanism is used for grabbing a piece of noodles in a cooking box, the claws firstly stretch and then contract to grab the piece of noodles firmly, and thus the piece of noodles does not fall off when being conveyed; when the piece of noodles is thrown, the claws stretch, and the piece of noodles can accurately fall into a drying box.

The invention relates to the field of precious metal smelting equipment, and in particular, relates to the field of recovery of precious metal by using a plasma smelting furnace. A secondary combustion chamber furnace door device of a precious metal recovery plasma furnace comprises a furnace door (1) for covering a furnace port; the furnace door (1) consists of a hollow furnace door (2) and a refractory body (3); the refractory body (3) is arranged on the inner side of the hollow furnace door (2); a cooling water inlet (4) is formed in the lower part of the outer side of the hollow furnace door (2); and a cooling water outlet (5) is formed in the upper part of the outer side of the hollow furnace door (2). The secondary combustion chamber furnace door device of the precious metal recovery plasma furnace further comprises a rotating shaft mechanism (6), a side positioning plate (7), a lower positioning plate (8), a slide system (9) and a fixture (10); and the slide system (9) consists of a rail (11) and a slide wheel (12). The secondary combustion chamber furnace door device of the precious metal recovery plasma furnace can guarantee the plasma smelting furnace to clean a flue in the precious metal smelting process, prevents potential safety hazards, guarantees enough operation space, reduces the labor intensity, guarantees the personal safety, reduces the heat loss, and protects the environment.

The invention discloses a false target, which comprises a body. The body comprises a telescopic shell, and a main body of the shell is a corrugated shell wall. The corrugated shell wall can be freely contracted, so that the novel false target can be contracted and folded; further, the unfolding speed is quick; the molding is easy; the shell is provided with an opening; a biologic source can be placed; not only is an enemy puzzled vividly by an appearance, but also an infrared ray and an electromagnetic wave can be sent out to puzzle the passive infrared detection and the radar detection of the enemy; and the frequency that the false target is detected is improved, so as to protect a true target.

The invention discloses a roof super waterproof structure and construction method. The roof super waterproof structure comprises a fine aggregate concrete layer arranged at the upper surface of the roof, a reinforced concrete structure layer arranged at the lower surface of the roof, and a leveling layer arranged above the reinforced concrete structure layer; the leveling layer is laid, and a buffer layer is laid above the leveling layer; a superstrong waterproof layer is laid above the buffer layer; a thermal insulation layer is laid above the superstrong waterproof layer; a waterproof layeris laid above the thermal insulation layer; a buffer layer is laid above the waterproof layer; and a fine aggregate concrete layer is laid above the buffer layer. The roof super waterproof structure and construction method comprising the following steps that the reinforced concrete structure surface layer is flushed; the leveling layer is laid; the buffer layer is laid; the superstrong waterprooflayer is laid; the thermal insulation layer is laid; the waterproof layer is laid; the buffer layer is laid; and the fine aggregate concrete layer is laid. According to the roof super waterproof structure and construction method, the waterproof layer can be effectively protected, damage of rainwater leakage, ultraviolet radiation, air pollution, acid rain, industrial powder layer, fungus, microorganism, accelerated oxidation decomposition of water and thermal energy, and frost and snow are avoided; and a water outlet, pipelines protruding from the roof, and odor holes are provided with waterproof structural members, so that the waterproof layer is waterproof at a constant ambient temperature, and the service life of the waterproof layer is prolonged. The roof super waterproof structure andconstruction method is unique in construction method, and the waterproof performance can be guaranteed.

The invention discloses an SQ wood pallet for logistics packaging of automobile parts. The SQ wood pallet comprises a transverse plate, top supporting plates, a bottom plate, an extension mechanism, ablocking mechanism and a protection mechanism, wherein the extension mechanism comprises plate grooves formed in the inner sides of the transverse plate; extension plates are arranged in the interiors of the plate grooves; round rods are fixedly connected to the side surfaces of the two sides of each extension plate; sliding grooves are formed in the inner wall surfaces of the plate grooves; andone side surface of each extension plate is fixedly connected with a pull handle. According to the SQ wood pallet, the pull handles can be pulled to make the extension plates to slide in the plate grooves, and then support seats are in contact with the ground to support the extension plates, so that the automobile parts with larger sized are placed, the placement area is increased, the born volumeis larger, the application range is wider, and the automobile parts are prevented from being in contact with the ground to be abraded and cause unnecessary loss; and meanwhile, support rods and the extension plates can be contracted and stored when not in use, so that the operation and the use are more flexible and convenient.

The invention relates to a sharp-curve tunnel track-laying vehicle, comprising at least two vehicle body segments, driving devices and a track gripping mechanism; the adjacent vehicle body segments are connected through a flexible rotating pendulum, each vehicle body segment is provided with one driving device, the driving devices are used for driving the vehicle body segments to move, and the track gripping mechanism is arranged on the vehicle body segments and used for picking and laying a track. The sharp-curve tunnel track-laying vehicle has the advantages that vehicle body segments can optionally rotate relative to one another, laying of a small-radius curve track is facilitated, and a power system has lower consumption of manpower and material resources.

The present invention relates to a piece of assembly auxiliary equipment of 3D stereoscopic image projection playing system, comprising a hanger frame assembly, a polarized light projection device and a metal curtain. The hanger frame assembly has a main frame, wherein three layers of tray plates with adjustable front and back pitch angles are disposed on the main frame; the upper and middle layers of tray plates are respectively used for stacking and fixing two projectors up and down; horizontal slots and location screw holes for plug-in mounting and fixing a polariscope tray are disposed on the upper and lower layers of tray frames; the polarized light projection device comprises two polariscope trays combined with the upper and middle layers of tray plates in a plug-in mounting manner; a polariscope clamping slot is disposed at a front end of the polariscope tray; the metal curtain is a hard substrate or a flexible soft base cloth standing front of the hanger frame assembly; silver inks, sliver powders, reflecting powders, light stabilizers and the like are coated on the surface of the substrate or the base cloth to obtain a metal reflecting coating. The product has the advantages of simple structure, convenient splicing and mounting, good focusing effect of polariscope, good texture display performance of the curtain and the like.

The invention provides a novel peritoneal dialysis catheter which comprises an anti-blocking pipeline capable of being filled with a fluid inside and a fluid filling device used for filling the anti-blocking pipeline with fluid. One end of the anti-blocking pipeline is sealed and fixed to a dialysis section, the other end of the anti-blocking pipeline is communicated with the fluid filling deviceoutside the dialysis section, and the anti-blocking pipeline comprises an expansion bag positioned beside a dialysis hole and a flow pipe for communication with the expansion bag with the fluid filling device. The expansion bag is volumetrically inflatable when filled with the fluid. Compared with the prior art, the novel peritoneal dialysis catheter has the advantages of being ingenious in structure, good in anti-blocking effect, easy to insert in or extract out of a patient, good in operation safety and capable of achieving rapid postoperative recovery of the patient, can effectively solve the problem of deviation of the position of the dialysis catheter, can also well extract ascites in the abdominal cavity, and has more thorough dialysis effect.

The invention provides a three-lumen balloon catheter to solve the problem that the balloon catheter does not have the cutting function in the prior art. A three-lumen balloon catheter, including a tube head, the proximal end of the tube head is connected to the balloon and the three-lumen tube, the three-lumen tube is connected to the outlet of the handle, the distal end of the balloon is tapered, and the boundaries on both sides of the balloon are respectively A developing material marking block is installed, and the proximal end of the balloon is connected to the outer layer of the three-lumen tube. The lumen of the three-lumen tube consists of a first lumen for the guide wire to pass through and a second lumen for drug injection. It is composed of a third cavity with a vascular knife, a knife storage area is provided at the far end of the third cavity, and the vascular knife is arranged in the knife storage area. The three-lumen balloon catheter can break through the intima into the true lumen during the interventional operation, incise or break through the intima of the false lumen as needed, and cut through the lumen of the diseased segment to avoid repeated withdrawal and puncture of the balloon catheter.

The invention discloses an assembly geological survey platform. The platform comprises a folding frame, a moving mechanism and a construction platform for construction. The moving mechanism is locatedat a lower end of the folding frame, the construction platform is located above the folding frame, the folding framecomprises a clip frame, a slide bar with a pulley and a fixing plate, the clip frame and the fixing plate are arranged in parallel, the clip frame is connected to the fixing plate throughthe slide bar,positioning holes are formed in four corner positions of the fixing plate, the lower end of the construction platform is provided with a telescopic column which cooperates with the positioning holes, a screw hole is formed in the telescopic column, a through hole is formed in a position, corresponding to the screw hole, of the fixing plate, the construction platform includes a table top steel plate and a protective fence which are arranged vertically, and the protective fence is provided with a plurality of trusses arranged in an array. The platform is telescopic and has a wide range of application.

A mechanical lock telescopic baton utilizing a lamp tube as a button comprises a hollow handle pipe, a middle end pipe and a top end pipe and further comprises a releasing mechanism and a lamp tube external member. A middle end clamp lock is arranged at the tail end of the middle end pipe, and a top end clamp lock is arranged at the tail end of the top end pipe. A first clamp groove and a second clamp groove which correspond to the middle end clamp lock and the top end clamp lock are formed in the front end of the handle pipe and the front end of the middle end pipe correspondingly. The releasing mechanism comprises a releasing rod, a positioning cover and a retractable pressing part. One end of the releasing rod is fixed to one end of the positioning cover. The retractable pressing part is arranged at the other end of the positioning cover through a spring. The releasing rod is arranged in the handle pipe and fixedly arranged at the tail end of the handle pipe through the positioning cover. The lamp tube external member comprises a hollow fixing sleeve and the lamp tube, wherein the lamp tube is movably arranged in the hollow fixing sleeve, and the front end of the hollow fixing sleeve is in threaded connection with the tail end of the handle pipe. The tail end of the lamp tube abuts against the retractable pressing part, and a lighting lamp at the other end of the lamp tube is limited through the edge at the tail end of the hollow fixing sleeve.

An adjustable-width mop is applicable to shops, supermarkets, hospitals and the like and comprises a left mop head (1) and a right mop head (3). The left mop head (1) and the right mop head (3) are movably connected through a hinge (2). The front end of a telescopic pole (7) is connected with the left mop head (1) and the right mop head (3) through the hinge (2). A slide sleeve (6) sleeves the telescopic pole (7), and a locking handle (5) is mounted on the slide sleeve (6). Two supporting rods (4) are connected to two sides of the slide sleeve (6) respectively and connected with the left mop head (1) and the right mop head (3) through hinges. The lower portion of the telescopic pole (7) is in insertion connection with a handle sleeve (9), and a locking handle (8) is mounted on the handle sleeve (9). The adjustable-width mop is adjustable in mop head width, convenient to use, small in floor space in storage and capable of meeting requirements of cleaning floors in different widths, andoperating efficiency is improved.

The invention discloses an offline propaganda device for network propagation propaganda, and belongs to the technical field of propaganda equipment, the offline propaganda device comprises a top plate, a propaganda box, a storage box and a support rod, the propaganda box is fixed on the support rod, the top plate is fixed on the propaganda box, and the storage box is fixed at the bottom of the propaganda box; the interior of the propaganda box is divided into a first inner cavity and a second inner cavity through a partition plate. Transparent protective plates are embedded in the side walls of the first inner cavity and the second inner cavity respectively; a display screen is fixed to the inner side of the protection plate on the first inner cavity, LED lamp strips are arranged at the two ends of the display screen respectively, an infrared sensor is embedded in the protection plate, a control module is fixed to the partition plate, and the display screen, the LED lamp strips and theinfrared sensor are connected with the control module; extending plates are slidably connected to the two sides in the top plate correspondingly; and a placement box can do internal and external telescopic motion at the opening of the storage box. The offline propaganda device is reasonable in structural design, the top of the propaganda box is shielded and protected, and rainwater is prevented from entering the propaganda box to influence normal work of circuits in the propaganda box.

The invention relates to the technical field of surveying and mapping, in particular to a rail type liftable high-altitude surveying and mapping jacking system. The system comprises leveling foot supports, frame legs, a base plate, supporting rods, a positioning plate, a hand-operated power device, a rail type lifting rod and stabilizing steel wires, wherein the inner ends of the frame legs are fixedly connected with the side portion of the base plate, the leveling foot supports are fixed to the outer ends of the frame legs, the positioning plate is located right above the base plate, the positioning plate is connected with the frame legs through the supporting rods, the hand-operated power device is carried on the positioning plate and controls the rail type lifting rod to lift up and down, and one end of each stabilizing steel wire is fixed to the rail type lifting rod, while the other end is fixed to the outer end of the corresponding frame leg. The structure is stable in overall supporting, high in rigidity and not prone to shake.

The invention relates to the technical field of bolt devices, in particular to a lockable retractable bolt device which comprises a retractable box body, a first pull rod, a second pull rod and a third pull rod, the first pull rod is connected to the retractable box body through a first connecting rod, and the second pull rod and the third pull rod are connected to the retractable box body through second connecting rods. The telescopic box body comprises a first containing groove, a second containing groove, a third containing groove, an upper box body and a lower box body, the first containing groove, the second containing groove and the third containing groove are used for limiting installation of the first connecting rod and the two second connecting rods respectively, and the upper box body and the lower box body are fixedly connected in an up-down corresponding mode. The lower box body is fixedly provided with positioning rods which are arranged on the two sides of the first containing groove in a mirroring manner; the positioning rods are movably connected with rotating pieces arranged in a mirror image mode respectively, ends of the rotating pieces are connected to the first connecting rod in a clamped mode respectively, the other ends of the rotating pieces are connected to the second connecting rods located on the two sides of the first connecting rod in a clamped mode respectively, and the first connecting rod is further sleeved with a spring. And the market requirements can be met.

The invention discloses a portable power adapter with small occupied space, beautiful and coordinated appearance, convenient retractable and portable power adapter, which comprises a casing, power input and output lines (51, 53), power conversion circuit (6), and wire locking mechanism , the center of the housing is provided with a hollow stepped shaft column (2), the outer wall of the shaft column (2) is provided with an annular partition (22), and the upper and lower sides of the annular partition (22) are provided with upper and lower turntables ( 31, 32), the upper and lower turntables (31, 32) are respectively provided with outer conductive layers (301, 302) on the stepped cylindrical surfaces, and the inner conductive layers (201, 202) are arranged on the shaft column (2), and the power input , output lines (51, 53) are connected with the outer conductive layer (301, 302) respectively, the input and output ends of the power conversion circuit (6) are connected with the inner conductive layer (201, 202) respectively, and the upper and lower turntables ( 31,32) and the shaft post (2) are connected with upper and lower torsion springs (41,42), and the power supply input and output lines (51,53) are coiled around the peripheries of the upper and lower rotating disks (31,32) respectively.

The invention discloses a star-link receiving device convenient to adjust. The star-link receiving device comprises a cabin body, wherein a directional antenna is arranged at the rear end of the cabin body, a radiation receiver is arranged on one side of the directional antenna, a linkage shaft is arranged on one side of the cabin body, and a rotary navigation device is arranged at the front end of the linkage shaft. During navigation, the cabin body can be equipped with instruments and equipment, the directional antenna on the outer wall can receive signals, the radiation receiver on one side can receive feedback information, a solar panel at the rear end can provide electric energy, the characteristic of efficiently receiving the signals is achieved, the integrity of the received information is improved, internal grillages can be slidably connected through sliding grooves, the groove block is driven by a rotator to rotate, the signal receiving stability of the equipment is effectively guaranteed, a separation sensor at the rear end can sense the dynamic state of the equipment, a rotating cover on one side is used for automatically rotating to facilitate falling and has a stabilizing effect, and a propeller can provide a power source, so that sailing is facilitated, and the device has practicability and is convenient and safe to use.

The invention discloses an inside and outside multipurpose ladder structure. The inside and outside multipurpose ladder structure comprises an elastic buckle and a fixed claw, transverse rods are separately welded at the inner side of a first ladder frame, the inner side of a second ladder frame and the inner side of a third ladder frame; a fixed rod is in bolt connection to the outer side of thesecond ladder frame and the outer side of the third ladder frame; a hanger is in bolt connection to the top of the inner side of the first ladder frame; a workbench is in shaft connection on the outerwalls of the transverse rods; insulators are fixedly connected to the bottoms and the tops of the ladder frames; fixed ladder legs are movably connected to the bottom of the second ladder frame; theelastic buckle is in shaft connection to the top of the first ladder frame, and the elastic buckle is mounted at the inner side of the hanger; and the fixed claw is fixedly connected to the inner sideof the first ladder frame. The workbench is arranged, so that working comfort while an operator stands on a ladder for a long time is improved, and therefore, the inside and outside multipurpose ladder structure serves multiple purposes, can be used as a common ladder, also can be used as a ladder A and a hanging ladder, is free in extension and contraction, and is small in placing space.