89results about How to "Stable and reliable installation" patented technology

An air conditioner having an enhanced user perception and a controlling method thereof are provided. A predetermined character and / or its applied character image are / is displayed on a display window of the air conditioner. The character and / or the character image are / is changed depending on the operational states of the air conditioner, so that the user perceives the operational state of the air conditioner more conveniently. The air conditioner has advantages in that the user can perceive the operational state of the air conditioner more conveniently, the user can be stimulated to purchase the product, and a use term of the air conditioner can be extended.

The invention discloses a method for making and packaging a printed circuit board (PCB). The method comprises the following steps of: providing the PCB, wherein, the PCB is provided with at least one circuit area, and a packaging area is closely arranged around the circuit area; milling the packaging area so as to form a groove between the packaging area and the circuit area; carrying out electroless copper plating in the circuit area and metallization treatment in the packaging area; etching the circuit area according to circuit layout, and arranging components on the circuit area; providing a metal cover body, arranging the lower end of the metal cover body in the groove formed between the packaging area and the circuit area, wherein the circuit area is in the metal cover body; and welding the lower end of the metal cover body with the groove. The invention further discloses a crystal oscillator with the PCB.

A mounting device for mounting a capacitor on a connector element includes a hollow body defining a continuous through-hole that axially penetrates the body for receiving and mounting the capacitor. The body has a lower region defining a lower through-hole portion with a dimension. The body further has a middle region defining a middle through-hole portion with a dimension that is smaller than the first through-hole dimension. Therefore, the middle region and the lower region define a first inner shoulder between them. The body further has an upper region defining an upper through-hole portion with a dimension that is smaller than the second through-hole dimension. The upper region and the middle region define a second inner between them.

A multipurpose unmanned aerial vehicle comprises a drive main unit and a functional auxiliary unit detachably fitted to the drive main unit; the drive main unit comprises a case, a plurality of releasable foldable arms and a top cover covering the case, one end of every arm is connected with the case, and a rotor is disposed above the other end of each arm; the bottom of the case is provided with a radiating block, and the bottom or sidewall of the case is provided with a mounting structure for connecting the functional auxiliary unit. The multipurpose unmanned aerial vehicle is simple in structure, good in safety, low in manufacture cost and suitable for quick mounting and connection; the vehicle is firm and reliable to connect and good in radiating performance, effectively prolonging its service time and life; the vehicle has good bearing performance, simple in design, simple to mount and attractive in appearance, may be converted to be multifunctional to adapt various operation needs, and has multiple purposes; therefore, the vehicle is a product good in technicality, practicality and economy.

The invention discloses a modular sensor and a manufacturing technique thereof. The modular sensor comprises a cavity module, a framework module, a circuit board, a Hall chip and a cover plate, the top of the cavity module is opened, a positioning groove is formed in the bottom of the cavity module, and the cavity is integrally injected and molded with PIN needle module; strip through holes are formed in the rear end of the framework module, two position spacing tables are arranged on the upper end surface of the framework module, a positioning lug boss is arranged on the lower end surface of the framework module, and a clamp groove comprising two buckles and one support table and used for accommodating the hall chip is formed in the outer part of the front end of the framework module. The buckle adopts an inner side interference pointed hook part and an end surface hot riveting spur, so as to enable the hall chip to be fixed and confined in the space; the elasticity of the metal PIN needle and the matching structure of the cavity module and the framework module guarantee the framework module to be accurately positioned and fixedly connected in the cavity body module, and prevent the electric element from being damaged after glue flowing uncontrolled cover the electronic element temperature shock; the front end surface of the hall chip and the front cavity surface of the cavity module are closely pressed, but the compression force is not so large as to cause deformation and damage of the cavity module front end, so as to effectively guarantee sensor information.

The invention discloses a power distribution cabinet comprising a working support table in a cylindrical shape. Four base support columns distributed in a peripheral array are arranged at the lower end surface of the working support table; a boss is fixedly welded to the left end of the arc outer wall of the working support table; and a housing is made at the edge of the upper end surface of the working support table in an integrated manner. A rotary table is arranged at the bottom surface inside the housing; and a moisture-proof cover is welded to the upper end surface of the housing. According to the application environment of the power distribution cabinet, moisture-proof, dust-proof and heat-proof objectives are achieved; and the convenient movement and stable and reliable installationare realized.

The invention discloses a steam and power dual-power-drive fan structure capable of achieving automatic switching. The problems that a fan drive structure is complex, single gas source drive or motordrive is adopted, at most of time, normal running needs cannot be met, and normal production is affected are solved. Two permanent magnet couplings are selected according to the actual industry and mining, when the permanent magnet couplings work, a controller controls an executor motor to work, an output shaft of the executor motor rotates and drives a pushing disc to rotate through a swing rod and a connecting rod, a pushing convex strip slides over a convex block from thin to thick, a sliding sleeve and a shaft sleeve are pushed to move in the direction away from the pushing disc, a permanent magnet disc gets close to a conductor disc, the air gap between the conductor disc and the permanent magnet disc is reduced, a steam turbine output shaft or electric motor output shaft can drive afan rotating shaft to rotate, the controller controls the rotation angle of the output shaft of the executor motor to achieve output torque adjusting between 0 and 100%, and engaging and disengaging between a steam turbine and a fan and between an electric motor and the fan can be achieved.

The invention discloses a numerically controlled machine tool for saving part processing time, which comprises a tool storage box, a clamping box is fixedly installed on one side of the tool storage box, a first air cylinder is fixedly installed on the inner wall of the bottom of the clamping box, the second The top of the output shaft of a cylinder is fixedly installed with a horizontally placed placement plate, the placement plate is located above the first cylinder, the top of the placement plate is provided with a tool, and a second cylinder is fixedly installed on one side of the inner wall of the tool storage box. The cylinder is located above the placement plate, the output shaft of the second cylinder is fixedly connected with a push plate, and the push plate is in contact with one end of the tool, and the clamping box is provided with a mounting hole, and the inner wall of the mounting hole is fixedly installed with three Evenly spaced support columns. The invention realizes the automatic replacement of the cutter of the numerical control machine tool, facilitates the processing of the parts, saves time, and at the same time, through the stable clamping, the installation of the cutter is more reliable, the processing quality of the parts is guaranteed, the use is convenient, and it is easy to popularize.

The invention relates to an inner-hole processing clamp of a thin-walled part for a numerical control lathe. The inner-hole processing clamp comprises a clamp body arranged on the outer side of a workpiece to be processed, in a sleeving manner and fixed on the numerical control lathe and a clamp cover mounted at the front end of the clamp body and used for clamping the workpiece to be processed. During processing, the workpiece to be processed is inserted into the clamp body, and the clamp cover is fixed at the front end of the clamp body and tightly presses the front end of the workpiece to be processed. Compared with the prior art, the inner-hole processing clamp has the advantages that the clamp body is directly clamped by a three-jaw chuck, so that the clamp can be mounted convenientlyand quickly. After mounting of the clamp body, the clamp cover is screwed in to tightly press the workpiece for clamping. The inner-hole processing clamp is suitable for operations of various lengthsand wall thicknesses, and therefore, is strong in applicability. The workpiece to be processed is locked by the clamp cover, so that safe and reliable clamping is realized. The clamp cover is rotatedby a hook spanner for clamping, so that the operation is convenient.

The invention discloses a circulating water automatic precise drug feeding system, and aims at solving the problem that circulating water treatment effect is affected by inaccurate circulating water treatment drug feeding amount. The system includes a circulating water conveying mechanism, a water quality online detection device, a precise drug feeding cabinet and a controller. The circulating water conveying mechanism includes a circulating water tank, a circulating water pipe and a circulating water pump. A sewage discharge branch pipe communicates with the circulating water pipe. A sewage discharge valve is mounted on the sewage discharge branch pipe. One end of the circulating water pipe is connected to an outlet of the circulating water pump. The other end of the circulating water pipe communicates with the upper position of the circulating water tank. A water inlet of the circulating water pump is connected to a water intake pipe. The water intake pipe communicates with the lowerposition of the circulating water tank. A sampling branch pipe communicates with the circulating water pipe. The water quality online detection device is mounted on the sampling branch pipe. A sulfuric acid filling device, a non-oxidizing sterilizing agent filing device, an oxidizing sterilizing agent filing device and a corrosion scale inhibitor filling device are mounted in the precise drug feeding device.

The invention relates to a combined type ceramic lower rubber ring pin of a spinning machine. The ceramic lower rubber ring pin comprises a supporting installation part and a bearing lower rubber ring operating part, wherein the ceramic lower rubber ring pin further comprises a connecting fastener which is used for connecting the supporting installation part with the bearing lower rubber ring operating part together. The combined type ceramic lower rubber ring pin of the spinning machine disclosed by the invention is very convenient to mount and dismount; moreover, the connecting fastener is arranged between the supporting installation part and the bearing lower rubber ring operating part so as to firmly and stably combine the supporting installation part with the bearing lower rubber ring operating part; meanwhile, the technical problems that the conventional combined type lower rubber ring pin is infirm in combined installation and the spinning quality is affected by mechanical waves produced in a spinning process are overcome.

Disclosed are a wedge-key-shaped liner plate structure overflow ball mill and a liner plate mounting method thereof. The ball mill comprises an end cover (2) with end cover liner plates (5) at the two ends, a ball mill tube (1), a rubber pad layer (3) in the tube, and tube body liner plates (4), wherein each tube body liner plate is a wedge-key-shaped liner plate of which the two ends are bevel notch surfaces and the inner surface is the protruding arc surface; every two adjacent tube body liner plates are compressed through reverse wedge-key-shaped pressing strips (6) which are pressed into bevel notches; connecting bolts (7) penetrate through a tube body and fixedly connect the wedge-key-shaped pressing strips with the tube body, so that the tube body liner plates are firmly mounted; the bevel notch surfaces, at the two ends, of the tube body liner plates are wedged and clamped together with the end inclined surfaces of the end cover liner plates; the tube body liner plates and the end cover liner plates are formed through one-time casting of a high manganese chromium alloy which contains 10-20% of manganese and 1-5% of chromium. The wedge-key-shaped liner plate structure overflow ball mill is resistant to abrasion, durable, easy to mount and dismount, good in sealing performance and low in manufacturing cost.

Provided is a wall hanging assembly for a curved-surface television set. The wall hanging assembly for the curved-surface television set comprises a connecting plate (1) and at least one television set installation plate (2), wherein the television set installation plate (2) is installed on the connecting plate (1), and is an arc-shaped installation plate, and the radian of the television set installation plate (2) is matched with the radian of the curved-surface television set. The wall hanging assembly for the curved-surface television set can be used for installation of the curved-surface television set.

The invention discloses a column plate inserting-buckling-type mounting structure and method. The column plate inserting-buckling-type mounting structure is arranged on the side face of a polygonal column plate in a surrounding mode, and the top face of the polygonal column plate is provided with keels and a top plate. The top plate is arranged in the middle of the top face of the polygonal columnplate. The keels extend from the corners of the top face of the polygonal column plate to the center of the top face of the polygonal column plate. The column plate inserting-buckling-type mounting structure comprises a plurality of flanged plates connected to the periphery of the polygonal column plate in a surrounding mode. As for every two adjacent flanged plates, one of the adjacent flanged plates is connected with the other adjacent flanged plate, and the adjacent flanged plates are connected at the corresponding corner of the polygonal column plate. According to the column plate inserting-buckling-type mounting structure and method, through use of two connecting inserting buckles of each flanged plate, the technical problem of mutual contradiction of the polygonal aluminum plate column face decorative effect and mounting stability is solved, and the double-excellence effects of good decorative effect and reliable mounting stability are achieved.

The invention relates to a convenient mounting and dismounting type combined prefabricated template suitable for a building floor descending plate. A main body comprises a template frame formed by mutually connecting the end parts of a combined transverse steel frame plate and a vertical steel frame plate which are prefabricated by square steel plates, and limiting plug pins, a twisted steel bar serves as the limiting plug pins, interconnecting plates with limiting plug pin holes A are fixedly arranged at the two ends of the transverse steel frame plate, limiting plug pin holes B are formed inthe plate faces of the two near ends of the vertical steel frame plate, the limiting plug pins are correspondingly inserted into the limiting plug pin holes A and the limiting plug pin holes B to form a stable steel template, deformation is avoided, limiting is reliable, grout leakage can be avoided, after curing and forming, bonding and interconnection are avoided, corners of concrete are not damaged during template dismounting, the forming precision can be ensured, repairing and chiseling work in the later template dismounting period is avoided, the dismounted template can be recycled, andthe defects that in the prior art, a template is poor in stability and forming effect, the quality is difficult to guarantee, the size deviation is large, the construction cost is high and the like are overcome, and high practicability is achieved.

The invention discloses a cell module mounting and fixing structure. The structure comprises a module fixing base and a module fixing top plate, wherein the module fixing base comprises a rectangularbottom plate part, two long side plate parts and two short side plate parts; the two long side plate parts and the two short side plate parts are opposite in pairs respectively and extend upwards fromouter edges of the bottom plate part respectively; the long side plate parts are higher than the short side plate parts; the upper edges of the long side plate parts are bent inwards and then bent upwards to form limit connecting parts; the module fixing top plate and the outer edges of two sides of the two long side plate parts are bent upwards to form mounting connecting parts; the mounting connecting parts are fixedly connected with corresponding limit connecting parts. By means of the structure, the module fixing base and the module fixing top plate define a frame structure, cell modulescan be mounted and fixed stably and reliably, and the structure is compact in structure and high in support strength.

The invention discloses an automatic tool changing device for a numerical-control machine. The automatic tool changing device comprises a tool storage box. A clamping box is fixedly installed on one side of the tool storage box; a first air cylinder is fixedly installed on the inner wall of the bottom of the clamping box; a holding plate which is arranged horizontally is fixedly mounted at the top of an output shaft of the first air cylinder and is disposed above the first air cylinder; tools are arranged on the top of the holding plate. A second air cylinder is fixedly mounted on one side of the inner wall of the tool storage box and disposed above the holding plate; an output shaft of the second air cylinder is fixedly connected with a push plate; the push plate is in contact with one end of each tool. The clamping box is provided with a mount hole; three supporting struts which are distributed uniformly are fixedly mounted on the inner wall of the mount hole. By the automatic tool changing device, automatic changing of the tools of the numerical-control machine is achieved, and processing of parts is facilitated with time saved; the tools are mounted more firmly by stable clamping, thereby providing a guarantee to processing quality of parts. The automatic tool changing device is convenient to use and easy to promote.

The invention discloses a quick assembly type guardrail. The quick assembly type guardrail comprises a plurality of cross beams which are arranged at intervals and transversely arranged and longitudinal beams which are arranged at intervals and vertically arranged, wherein a plurality of inserting holes which are arranged at intervals and vertically run through are formed in the cross beams, and the inserting holes of the upper cross beam and the lower cross beam which are adjacent are vertically aligned; the longitudinal beams are inserted from the inserting holes to realize inserting connection of the longitudinal beams and the cross beams; the cross beams are provided with inserting sections; the inserting holes are positioned in the inserting sections; the inserting sections are provided with limiting cavities which protrude from the hole walls of the inserting holes to the peripheries; limiting bulges are arranged on the sections, inserted into the inserting holes, of the longitudinal beams; and the limiting bulges are propped against the cavity walls of the limiting cavities. The quick assembly type guardrail has the advantages and effects of being stable and firm in mounting, convenient and quick in mounting and good in corrosion resistance.

The invention discloses a stamping assembly type guardrail and an assembling equipment thereof. The stamping assembly type guardrail comprises two transverse beams which are arranged at intervals andtransversely arranged and longitudinal beams which are arranged at intervals and vertically arranged, a plurality of inserting holes which are distributed at intervals are formed in each of the transverse beams, the inserting holes of the upper transverse beam and the lower transverse beam that are adjacent are vertically aligned, the inserting holes in the transverse beams are blind holes formedtowards the inner side, the multiple longitudinal beams are inserted into the aligned inserting holes through the assembling equipment to achieve inserting connection between the multiple longitudinalbeams and the transverse beams, the two sides of the hole walls of the inserting holes extend outwards to form pressing and leaning parts, after the end parts of the longitudinal beams extend into the inserting holes, the end parts of the longitudinal beams are bent outwards to form pressing and extending edges through a stamping device of the assembling equipment, and the pressing and extendingedges are pressed against the pressing and leaning parts to realize firm connection between the transverse beams and the longitudinal beams. According to the stamping assembly type guardrail and the assembling equipment thereof, welding can be avoided, assembling is directly carried out by means of the assembling equipment, so that installation is stable, the Faraday shielding effect in electrostatic spraying can be avoided, and the guardrail has better anti-corrosion performance.

The invention discloses an anti-drop fireproof thermal insulation plate as a fireproof isolation strip, relates to a fireproof thermal insulation plate as a fireproof isolation strip and belongs to the field of buildings so as to solve the problems that the conventional fireproof thermal insulation plate as the fireproof isolation strip has low strength, the fireproof thermal insulation plate as the fireproof isolation strip is easily dropped and has a severe ablation phenomenon during a fire hazard, and melted combustible liquid easily leaks out of a gap. The anti-drop fireproof thermal insulation plate is a preformed unit; a stepped end face at one end of the thermal insulation plate comprises a first step; a stepped end face at the other end of the thermal insulation plate comprises a second step; a first leakproof groove is formed on the stepped end face at one end of the thermal insulation plate; a second leakproof groove is formed on the stepped end face at the other end of the thermal insulation plate; the middle of an upper end face of the thermal insulation plate is provided with a third leakproof groove along a length direction; and the middle of a lower end face of the thermal insulation plate is provided with a fourth leakproof groove along the length direction. The anti-drop fireproof thermal insulation plate is used for the fireproof isolation strip in an external thermal insulation system of an external wall.

The invention provides a top cover structure and an air conditioner. The top cover structure comprises a top cover and decoration strips, wherein the decoration strips comprise a first decoration strip and a second decoration strip which are integrally arranged mutually; the top cover comprises a plurality of curved surfaces, the outer edges of the multiple curved surfaces are connected to form aperipheral edge part, every two adjacent curved surfaces are crossed to form a first connecting part, the first decoration strip is mounted on the peripheral edge part, and the second decoration stripis mounted on the first connecting part; a plurality of connecting assemblies are arranged between the decoration strips and the top cover; and each connecting assembly comprises a clamping claw anda convex column which is matched with the clamping claw. According to the top cover provided by the invention, the first decoration strip and the second decoration strip are set to an integrally formed structure, so that a connecting gap between the first decoration strip and the second decoration strip is effectively eliminated, integrity of the decoration strips is guaranteed, integral aestheticsense of the top cover is improved, and assembly efficiency is also improved. A structure of connecting the clamping claw to the convex column in a matched mode is adopted, so that fixed mounting ofmulti-dimensional multi-part decoration strips can be adapted.

The invention discloses a hoisting tool applied to bridge accessories and a using method thereof. The hoisting tool comprises a base plate, wherein a hoisting device for hoisting the base plate is mounted on the upper end surface of the base plate; adjusting plates are respectively arranged on two sides of the base plate; two adjusting plates penetrate through the base plate; clamping grooves forclamping the bridge accessories are formed by the two adjusting plates at the lower end of the base plate; the adjusting plates are mounted on the base plate through cross beams; the cross beams are mounted at the upper end of the base plate through mounting plates; adjusting devices for adjusting widths of the clamping grooves are formed in the inner sides of the adjusting plates; guide blocks for guiding or supporting the adjusting plates are arranged on the lower end surface of the base plate. The hoisting tool is reasonable in design and simple in structure, is used as the hoisting tool applied to bridge accessories and is used for assisting a hoisting machine to hoist and move the bridge accessories; the adjusting plates are reasonably designed; the two adjusting plates are mutually matched with the base plate to form the length-adjustable assembling grooves, so that the bridge accessories can be extremely rapidly and conveniently mounted and dismounted.

The invention discloses a multifunctional motor mounting base. The multifunctional motor mounting base comprises seat boards, non-slip mats, contractive fasteners, fixed screw holes, leather cushions,valve wheels and anti-vibration devices, wherein the seat boards are mutually connected through the contractive fasteners; the non-slip mats are arranged on the surfaces of the seat boards, and the positions, overlapped with the contractive fasteners, of the non-slip mats are arranged separately; the fixed screw holes are formed in four corners of the seat boards, and the leather cushions are arranged on the fixed screw holes; the valve wheels are arranged on four side faces of the seat boards respectively, and the valve wheels are arranged at the lower end of each contractive fastener respectively; the quantity of the contractive fasteners is four specifically; and the lower ends of the seat boards are fixedly connected with the anti-vibration devices. The multifunctional motor mountingbase disclosed by the invention has the advantages of perfect functions, high anti-vibration effect, flexible use, wide applicability and firm fixation.

The invention discloses a forest patrol line fire behavior patrol protective structure. The forest patrol line fire behavior patrol protective structure includes a containing frame, a guard blocking disk, a main control plate, a top prevention plate and a sponge clamping block, the upper part of the containing frame is provided with the guard blocking disk, and the middle of the inner part of the guard blocking disk sleeves the main control plate; the forest patrol line fire behavior patrol protective structure has the beneficial effects that a plurality of concave clamping grooves formed in an equal-radian mode and on an upper installation ring are connected to components on an unmanned aerial vehicle in embeded, clamping and fixing mode, it is ensured that the installation and use of the unmanned aerial vehicle on the protective structure is more stable and firm, it is matched that the sponge clamping block is embedded between the unmanned aerial vehicle and the guard blocking disk of the protective structure, shock absorption and buffer force are provided for the unmanned aerial vehicle, the vibration of the unmanned aerial vehicle during flight work and the collision wear between the unmanned aerial vehicle and the protection structure are reduced, and the service lives of the unmanned aerial vehicle and the protective structure are improved; and a motor on a rotary supporting seat drives rotary blades to rotate rapidly to assist driving the unmanned aerial vehicle to fly, and it is ensured that the power is more sufficient and actions are more sensitive and fast when the unmanned aerial vehicle conducts flight patrol work.

The invention belongs to the technical field of heat exchangers, and particularly relates to a high-load detachable plate type heat exchanger. The high-load detachable plate type heat exchanger comprises a bottom plate, a containing groove is formed in the top of the bottom plate, a heat exchange plate is slidably connected with the inner wall of the containing groove, a liquid outlet pipe is fixedly connected with the side edge of the heat exchange plate, and a liquid inlet pipe is fixedly connected with the other side of the heat exchange plate. According to the high-load detachable plate type heat exchanger, through cooperation of first flange plates, second flange plates, limiting rods and limiting plates, one independent heat exchange plate can be detached during maintenance, so thatmaintenance is easier and more convenient, overall replacement is avoided, and the maintenance cost can not be increased; and through cooperation of fixing blocks, fixing grooves, plug pins and insertion holes, the device is more stable and firmer to install, connection looseness caused by long-time use of existing connection is avoided, and installation and fixation of the device cannot be affected.

The invention discloses a bending forming die tool for a bus roof through beam. The tool comprises an upper die and a lower die which are mutually matched for work, wherein each of the upper die and the lower die comprises a bottom plate, and two rows of opposite bolts are arranged on the bottom plate; a row of upper reinforcing plates and a row of lower reinforcing plates are welded on the bottom plates of the upper die and the lower die respectively; an upper die arc plate is welded on each of two sides of the upper reinforcing plates, each of two ends of one upper die arc plate is connected with the corresponding end of the other upper die arc plate through an upper baffle plate, and the upper die arc plates and the upper ends of the upper reinforcing plates are spliced through an upper arc plate; a lower die arc plate is welded on each of two sides of the lower reinforcing plates, each of two ends of the one lower die arc plate is connected with the corresponding end of the other lower die arc plate through a lower baffle plate, and the lower baffle plates and the upper baffle plates are oppositely arranged; the lower die arc plates and the upper ends of the lower reinforcing plates are spliced through a lower arc plate. The die tool has sufficient strength and rigidity, is simple in structure and is light; under the premise that the strength and the rigidity are guaranteed, the structure is simple and compact as far as possible, the size is small, the mass is light, and workpiece loading and unloading are facilitated.

The invention discloses a lifting type escaping device and a driving mainframe thereof. The driving mainframe comprises a main shaft, a mounting seat, an energy storing unit, a power unit, a speed reduction unit and a pre-tightening force adjusting unit, wherein the energy storing unit comprises a volute spiral spring and a spring mounting housing; two ends of the volute spiral spring are correspondingly fixedly connected to the main shaft and the spring mounting housing; the power unit comprises a coiling block and a steel wire rope; the coiling block is fixedly connected to the spring mounting housing; the speed reduction unit comprises a friction housing, a planetary gear, an acceleration disc gear and a centrifugal frictional block; the centrifugal frictional block can centrifugally move to be in contact with the friction housing so as to realize frictional energy consumption and speed reducer; the pre-tightening force adjusting unit comprises a turbine and a worm; the turbine is fixedly connected to the main shaft in a rotating stopping manner; and the worm can drive the main shaft to rotate through the turbine so as to adjust the pre-tightening force of the volute spiral spring. The lifting type escaping device and the driving mainframe thereof are pure mechanical devices and are stable and reliable in performances and are hardly failed in hazards such as fire; and moreover, the convenience of mounting, debugging and use is ensured.