42results about How to "Low cost of design and production" patented technology

The present patent application relates to a battery pack for connecting to a cordless power tool to supply power thereto, the battery pack may supply two volumes or more than two volumes of voltage or capacity to the cordless electric device, the battery pack provided with a first connection terminal set which electrically connected to a battery cell set, the first connection terminal set provided with a transmission switch, shift the transmission switch to connect two sets or more than two sets of battery cell sets in series or in parallel so that output two volumes or more than two volumes of voltage or capacity.

The invention relates to a 3D printing personalized plunger type puncture treatment template with a fixing device. The treatment template comprises a template base plate, template guide holes, puncture needle guide columns, fine adjustment bracket insertion holes, positioning holes, lightweight through holes, laser alignment lines, puncture needle numbers, depth marks and the like. The template puncture needle guide columns can be taken down at any time, the diameter of the template guide holes is large and the length of the template guide holes is small after template puncture needle guide columns are taken down, so that local anesthesia points are accurate in positioning, local anesthesia is easy to implement, a bone drill with a large diameter can be conveniently used, and drilling andpositioning are precise. The three fine adjustment bracket insertion holes are formed and matched with a fine adjustment bracket in use so that the position of the template can be fine adjusted and fixed. The puncture needle numbers and the depth marks are arranged on the surface of the template base plate, and the situation that puncture needles are inserted by mistake because no depth marks arearranged is prevented. The template is customized, each puncture needle is precisely designed before operations according to CT, magnetic resonance and other medical images, precise minimally invasivesurgery is achieved, operation difficulty and operation risks are greatly reduced, the learning cycle of young doctors is shortened, services are quickly conducted, and then more patients are benefited.

The invention relates to an air-fuel ratio rapid automatic adjusting system for a gas generator set, which comprises a touch screen, a Venturi tube mixer, a turbosuperchager, an intercooler, a throttle valve, an engine, a rotating speed sensor, an generator, an intake manifold and a mixture gas absolute pressure / temperature measurement module, wherein one end of the Venturi tube mixer is respectively connected with the gas pressure difference / absolute pressure / temperature measurement module, a gas rapid control valve, an air-fuel ratio controller and the touch screen in sequence; the other end of the Venturi tube mixer is connected with the turbosuperchager, the intercooler, the throttle valve, the intake manifold, the engine, the rotating speed sensor and the engine in sequence; the gas rapid control valve and the gas pressure difference / absolute pressure / temperature measurement module are connected with the air-fuel ratio controller and the touch screen in sequence; the intake manifold is connected with the air-fuel ratio controller and the touch screen in sequence; and the air-fuel ratio of the engine is automatically adjusted rapidly according to the difference value of practical mass flow and theoretical mass flow of a mixture gas in the engine.

The invention discloses a method for epitaxial growth of high-quality and large-size monocrystal diamond, and belongs to the field of preparation of semiconductor materials. The method is characterized in that the surface roughness of a large-size single crystal diamond sheet grown through mosaic splicing is reduced to be lower than 0.2 nm through precision polishing; then electron beam evaporation is adopted to deposit metal nickel with the thickness of 100-200 nm on the surface of a substrate at the speed of 0.01-0.1 nm / s while the substrate is heated at the temperature of 100-500 DEG C, andthen metal iridium is deposited at the speed of 0.01-0.5 nm / s; after the thickness of iridium reaches 15-40 nm, the temperature of the heated substrate is increased to 700-1000 DEG C, meanwhile, thedeposition speed is increased to 0.5-1 nm / s, and finally, an iridium thin layer with the total thickness of 150-300 nm is deposited; then a plasma chemical vapor deposition technology is adopted to pre-deposit a 4-10 nm amorphous carbon layer after the iridium surface is cleaned by hydrogen plasma so as to promote the enrichment of carbon atoms on the sub-surface of the iridium thin layer; and finally, after the substrate is subjected to pure hydrogen plasma etching for 6-15 s, the negative bias voltage and the methane flux are regulated to achieve bias voltage in-situ nucleation of the large-size single crystal diamond on the iridium surface and subsequent non-bias voltage epitaxial growth.

The invention discloses a suspension oil cylinder common-frame simulation test device for a large mining truck, and belongs to the technical field of hydraulic cylinders. A rack comprises a baseplate, an L-shaped side vertical plate, a front vertical plate and a back vertical plate; a rack connecting body is mounted on the front vertical plate; a loading base is fixed below the rack connecting body; a loading connecting body is mounted on the loading base; a tested oil cylinder is connected between the rack connecting body and the loading connecting body; and a loading device is fixed below the loading base. The tested oil cylinder is fixed on the rack through simulating a main machine mounting form; and a loading oil cylinder in the loading device performs dynamic loading test under the simulation working condition on the tested suspension oil cylinder to simulate the use working conditions of the suspension oil cylinder to the greatest extent to inspect related reliability of the suspension oil cylinder. The device is simple in structure and low in production cost, and simulates the use working conditions of products to the greatest extent through controllable loaded loads; and the rack is high in compatibility and suitable for most existing suspension oil cylinder product tests.

The invention discloses an adapter, which comprises a connector main body, a shell, an elastic piece, a locking piece and an elastic clamping piece, wherein the connector main body comprises an outer conductor, an inner conductor and an insulator, the shell sleeves the connector main body, a limiting space is formed between the shell and the connector main body, one end of the locking piece is movably limited in the limiting space, the other end of the locking piece is provided with an extrusion part, the elastic piece is at least partially located in the limiting space, one end of the elastic piece abuts against the side wall of the limiting space, the other end of the elastic piece abuts against the locking piece, one end of the elastic clamping piece is detachably connected with the outer conductor, the other end of the elastic clamping piece is provided with at least two elastic clamping parts, each elastic clamping part is provided with a resisting part, and the extrusion part is matched with the resisting parts so that the at least two elastic clamping parts can be gathered towards the center. The adapter can be quickly connected with a tested cable or a cable assembly, avoids damage to the cable or the cable assembly, improves the assembly efficiency, and is suitable for cables and cable assemblies of different models.

The invention discloses a method for safety protection of passengers during starting of a vehicle. The method comprises the following steps: when the vehicle starts, receiving a vehicle speed signal, a gear switch signal, a brake signal and a vehicle door position signal, and comparing the vehicle speed signal, the gear switch signal, the brake signal and the vehicle door position signal with preset corresponding signals by an ECU (Electronic Control Unit); after the condition that the vehicle is simultaneously positioned in a parking state and a vehicle door opening state is judged, receiving operation information of current finished vehicle accessories, calculating total power required for maintaining the operation of the current finished vehicle accessories, transmitting an instruction to an engine, and driving the engine to operate at the total power by the ECU, thereby performing safety protection on the passengers. The invention provides a safe and reliable finished vehicle application scheme for protecting the passengers; by using the application scheme, the finished vehicle can meet the service demands of various accessories on site, and the condition that the passengers are thrown out to cause accidents because the vehicle is started when the vehicle door is not closed can be better prevented.

The invention discloses a machining clamp of an automobile interior trim part. The machining clamp comprises a workbench, supporting feet are arranged at the lower end of the workbench, and a plurality of clamping units and a plurality of supporting units are arranged on the workbench; the clamping units comprise C-shaped supports, vertical plates I are arranged at the lower ends of the inner sides of the supports, supporting devices I are fixed at the tops of the vertical plates I, air cylinders are fixed at the upper ends of the supports, clamping devices are fixed at the front ends of piston rods of the air cylinders, and the clamping devices and the supporting devices are symmetrical up and down relative to the horizontal line; and the supporting units comprise bottom plates, verticalplates II are arranged at the upper ends of the bottom plates, and supporting devices II are fixed to the tops of the vertical plates II. The machining clamp of the automobile interior trim part is suitable for the interior trim parts of different sizes and shapes, the application range is wider than that of a special clamp, and the design and manufacturing cost of the special clamp is reduced; inthe case of a pressing part of the interior trim part, the traditional single-point pressing is changed into pressing through four pressing rods, clamping is safer and more stable; and the four pressing rods can be freely adjusted to adapt to non-planar clamping of the interior trim part.

The invention discloses a frame body structure of a door and window system. The frame body structure comprises skeletons; each skeleton is provided with one or more fixing frames; glass plates are mounted in the fixing frames; the skeletons are formed by connecting bearing beams; inwards-sunken clamping grooves are formed in one sides of the bearing beams, and blocking edges are arranged on the other sides of the bearing beams; and the glass plates are fixed with the inwards-sunken clamping grooves of the bearing beams on the peripheries of all the fixing frames in clamped and sleeving modes,or the blocking edges of the bearing beams on the peripheries of all the fixing frames are matched with limiting pieces connected to the bearing beams to clamp and fix the glass plates. The frame bodystructure has the advantages that the prepared material variety is less, the design manufacturing cost is low, and mounting is convenient and saves labor.

The invention discloses a double-cylinder synchronous radial loads testing device, and belongs to hydraulic cylinder performance detecting equipment. The device comprises a mounting rack; two tested oil cylinders, oppositely arranged in parallel, are fixed on the mounting rack through fixing devices; a loading device is connected between piston rod ends of the two tested oil cylinders; and the piston rod ends of the two tested oil cylinders are connected with synchronous detecting devices. The device is simple in principle and structure and lower in design and production cost; through controllable loading of loads, the product use working conditions are simulated to the greatest extent; and the mounting rack is high in compatibility and suitable for most existing oil cylinders with synchronization requirements and higher lateral load working conditions.

The invention discloses a kind of disassembly and assembly pincers of an engine valve lock, which comprises a first pincer handle, a second pincer handle, a movable supporting point, a first perpendicular arm and a second perpendicular arm, wherein the first pincer handle and the second pincer handle are disposed in a crossed manner, and the movable supporting point is disposed at the intersection point of the first pincer handle and the second pincer handle; and the first perpendicular arm and the second perpendicular arm are respectively disposed on end heads of the first pincer handle and the second pincer handle, and top ends of the first perpendicular arm and the second perpendicular arm are respectively perpendicular to and connected to the first pincer handle and the second pincer handle. The disassembly and assembly pincers of the engine valve lock provided by the invention is simple in structure and low in cost, is operated easily and positioned accurately and conveniently, can quickly realize disassembly and assembly of the valve lock, can firmly clamp the valve lock in a groove at the tail part of the valve, avoids the valve from falling into an air cylinder due to loose fixation between the valve lock and a valve spring upper base, can reduce burdens of car repair staffs, and is very applicable for popularization.

The invention discloses a simulation condition tester for a supporting leg type hydraulic cylinder, and belongs to the technical field of hydraulic cylinders. A column is fixed on a base plate; a crossbeam is hinged to the upper end of the column; the tested hydraulic cylinder is mounted in the middle portion of the crossbeam; one end of the tested hydraulic cylinder is connected with a first loading device, and the first loading device is connected onto the base plate; the end, far from the column, of the crossbeam is connected with a second loading device; and the second loading device is connected onto the base plate. The loading load and frequency of the first and second loading hydraulic cylinders are adjusted by a loading system, dynamic loading test for the tested hydraulic cylinderis realized in practical load spectrum, related conditions during work of the supporting leg type cylinder are simulated, and related performances including shaking sound, rebounding, offset load resistance, weld seam intensity and service life are tested. The tester is simple in principle and structure and low in design and manufacturing cost, can test the simulated condition by controllable loading before that the supporting leg hydraulic cylinder leaves factory, potential safety hazards are eradicated, and related cost is greatly reduced.

The invention relates to a cutting saw intermittent work mounting support, and belongs to the technical field of mounting supports. The cutting saw intermittent work mounting support comprises a gantry support. A sliding rail is transversely mounted on the gantry support and provided with a sliding block. A mounting plate is horizontally fixed to the bottom of the sliding block. A locking pin is horizontally and rightwards arranged on the right side of the mounting plate. A pin hole used for penetrating and installing of the locking pin is formed in the position, corresponding to the locking pin, of a supporting leg on the right side of the gantry support. A hydraulic cylinder is vertically mounted at the bottom of the mounting plate. By means of the design, the manufacturing cost is low,and a product with the left portion higher than the right portion lower can be cut easily.

The invention discloses an outrigger hydraulic cylinder simulation working condition test device, which belongs to the technical field of hydraulic cylinders. A column is fixed on the bottom plate; the upper end of the column is hinged with a beam; the tested hydraulic cylinder is installed in the middle of the beam; one end of the tested hydraulic cylinder is connected to the first loading device, and the first loading device is connected to the bottom plate; Two loading devices, the second loading device is connected to the base plate. Adjust the loading load and loading frequency of the first loading hydraulic cylinder and the second loading hydraulic cylinder through the loading system, realize the dynamic loading test under the measured load spectrum of the tested hydraulic cylinder, simulate the relevant working conditions when the outrigger cylinder is working, and test Its vibration, rebound, anti-eccentric load, weld strength, service life and other related properties. The principle and structure of the invention are simple, and the design and manufacture cost is relatively low. Through the controllable loading load, the simulated working condition test can be carried out before the outrigger hydraulic cylinder leaves the factory, which not only eliminates potential safety hazards but also greatly reduces related costs.

The invention discloses a high-latent-heat medium-temperature composite phase change material based on nano heat conduction enhancement and a preparation method thereof, and belongs to the field of phase change heat storage materials. A novel eutectic salt system is designed and developed through a theoretical calculation-phase diagram calculation method, villiaumite with high latent heat and carbonate are compounded with high-latent-heat multi-element eutectic salt, and nano AlN with high heat conductivity and light weight is used as a heat conduction reinforcing material, and a solid nano layer on the surface of a nano-particle medium can reinforce the heat conduction performance of the eutectic salt. The method overcomes the defects that a traditional trial-and-error method-preparation method is tedious, low in efficiency and the like, and the design and preparation cost of the eutectic salt is reduced; and the prepared phase change material overcomes the problems of low heat storage density, low heat storage efficiency and the like of the phase change heat storage material in the prior art.

The invention provides a power battery cover plate and a power battery using the same. The power battery cover plate comprises a cover plate base body with a pole column unit, wherein the pole column unit comprises a pole column base and a pole column body; the pole column base is in sealing and blocking fit with the lower side surface of the cover plate base body by a center sealing ring; the pole column body is arranged on the pole column base; the pole column body is provided with a penetrating section which can penetrate out of a pole column hole in the upper edge of the cover plate base body and extend in the up-down direction; the outer periphery surface of the penetrating section is provided with a blocking slot extending or distributed around the pole column body; a lifting piece which is in blocking fit with the upper side surface of the cover plate base body is arranged outside the penetrating section in a sleeving manner; elastic inverted pokes are arranged on the lifting piece, and the elastic inverted pokes extend along the radial direction of the pole column body, and upwards turnover to be inserted into the blocking slot so as to lift upwards the pole column unit. According to the power battery cover plate and the power battery using the same, the assembling process is fast, easy and convenient, the lifting piece is simple in manufacture technique, and the whole design and manufacture cost is relatively reduced.

The invention discloses a special pipe end forming method. The special pipe end forming method orderly comprises the steps of: (1) bending a to-be-processed end of a pipeline piece into a required shape; (2) putting the bent end into a special clamping mould with a pipeline chamber to be clamped; and (3) carrying out the pipe end forming processing on the end with the pipe end forming method. According to the pipe end forming method disclosed by the invention, the end part of the pipeline piece is firstly bent, is then clamped by the special clamping mould, and is finally formed by a pipe end forming machine. The pipe end forming method has the advantages of high percent of pass, and high efficiency. Meanwhile, the invention further discloses the special clamping mould used by the pipe end forming method. The special clamping mould can realize the pipe end forming of the special pipeline pieces with angles, and has the requirement on the length of an expanding section of the pipeline that the length is larger than 50mm as compared with the existing pipe end forming requirement that the length of a linear section is larger than 90mm, so that the pipeline piece processing scope is greatly enhanced. In addition, the special clamping mould also has the advantages of low design and manufacture cost and easiness in operation.

The invention discloses a splicing door and window system which comprises a framework, wherein the framework is provided with more than one sash frame and more than one fixing frame; openable window sashes are mounted in the sash frames; first glass plates are mounted in the fixing frames; the window sashes comprises frame bodies and second glass plates mounted in the frame bodies; the frame bodies of the window sashes and the framework are formed by connection of bearing beams; each bearing beam is formed by splicing a beam body and at least two limiting pieces; each of the bearing beams at the periphery of each fixing frame is connected with two limiting pieces clamping and fixing each first glass plate from the two sides of each first glass plate; and each of the bearing beams definingthe frame body of each window sash is connected with two limiting pieces clamping and fixing each second glass plate from the two sides of each second glass plate. The splicing door and window systemhas the advantages of few prepared material varieties, low design and manufacturing cost, convenience in mounting, labor saving and the like.

The invention discloses a self-aligning pendulous reed for a semiconductor chip, belongs to the field of the photoelectronic technique, and can be used for the placing and alignment of a semiconductorlight-emitting device chip. An alignment bar is set in the longitudinal direction of the surface of a silicon chip substrate, and the silicon chip substrate is provided with a series of etching slotswhich are the same. The etching slots are arranged in the lateral direction of the surface of the silicon chip substrate. A heat sink is placed on the silicon chip substrate, and an overturning plateis placed on the heat sink. A side edge of the heat sink is aligned with a side edge of a tube core placing in the etching slot. The pendulous reed is simpler in structure, and is lower in design andmanufacturing cost. The pendulous reed is simple, and does not need other redundant devices. The overall size of the pendulous reed is far less than the size of a conventional pendulous reed clampingtool, so the whole pendulous reed can be placed in a nitrogen cover for operation, thereby reducing the oxidation of a cavity surface. Meanwhile, the devices employed by the pendulous reed do not contain metal, so the operation is cleaner.

The invention relates to a novel ink-jet printing system used on a printing carriage and a matched ink cartridge thereof. The ink-jet printing system mainly comprises an ink cartridge holder and ink cartridges, wherein the ink cartridge holder is installed on a printing carriage in an ink-jet printer and is provided with a control key siamesed chip; the ink cartridges are used on the ink cartridge holder; at least four ink cartridge mounting positions are arranged in the ink cartridge holder; the outer side of the ink cartridge holder is provided with a chip; the chip is an assembly of a PCB circuit board and chip elements; the chip elements are respectively corresponding to the ink cartridge mounting positions in the ink cartridge holder; the number of the chip elements is identical to that of the mounted ink cartridges; the PCB circuit board is provided with a control key; and a control key circuit is respectively and electrically connected with the chip elements. The structure is characterized in that when the ink cartridges are replaced, the ink cartridge holder does not need to be taken out, and a user only needs to press the control key on the chip to reset the ink cartridge chip elements, so that the printer measures the ink cartridges of the printer again.

The invention discloses an optical disc driver connector and an improvement method for solving the problem of floating of the optical disc driver connector. An optical disc driver is connected with a connector and is attached and fixed to a PCB through a Pin; and a support apparatus for supporting and keeping the bottom surface of the optical disc driver parallel to the top surface of the PCB is arranged between one side, far away from the connector, of the optical disc driver and the PCB. The support apparatus can be adjusted by moving up and down between the bottom surface of the optical disc driver and the top surface of the PCB. The support apparatus for supporting and keeping the bottom surface of the optical disc driver parallel to the top surface of the PCB is arranged between one side, far away from the connector, of the optical disc driver and the PCB, so that the optical disc driver connector is supported, the center of the optical disc driver connector is balanced, and the optical disc driver connector does not tilt and float.

The invention discloses a hot forging manipulator arm. The hot forging manipulator arm structurally comprises a work box, a first heat dissipation net, an access door, a base, a first rotating shaft motor, a component bin, an access cover, a stretchable motor bin, a second heat dissipation net, a stretchable arm, turnbuckles, a clamp, a bin shell, a supporting rod, a second rotating shaft motor, agear, a crawler belt, an electric wire, a rotating shaft and a ring. The hot forging manipulator arm is comprehensive in overall design, all the components are necessary, the design and manufacturingcost is reasonably arranged in place, the overall installation steps are not troublesome and simple, and the hot forging manipulator arm is high in working efficiency and high in practicability and is a working mechanical arm very suitable for hot forging.

The invention discloses a double-cylinder synchronous radial loads testing device, and belongs to hydraulic cylinder performance detecting equipment. The device comprises a mounting rack; two tested oil cylinders, oppositely arranged in parallel, are fixed on the mounting rack through fixing devices; a loading device is connected between piston rod ends of the two tested oil cylinders; and the piston rod ends of the two tested oil cylinders are connected with synchronous detecting devices. The device is simple in principle and structure and lower in design and production cost; through controllable loading of loads, the product use working conditions are simulated to the greatest extent; and the mounting rack is high in compatibility and suitable for most existing oil cylinders with synchronization requirements and higher lateral load working conditions.

A hooping type dismounting device for motor maintenance belongs to the motor maintenance equipment field. The device is characterized in that the device includes a hooping device; the hooping device includes an outer fixing ring, an inner fixing ring and a connecting arm, and the inner fixing ring is arranged on a fixing ring; a connecting arm is arranged between the inner fixing ring and the outer fixing ring; the connecting arm is divided into connecting upper arms and connecting lower arms; more than five connecting upper arms are arranged on the inner fixing ring; each connecting upper armis provided with an upper through hole, and each connecting lower arm is provided with a lower through hole; a hinge shaft penetrates through each upper through hole and each lower through hole; andeach connecting lower arm is fixed on the corresponding connecting upper arm through the hinge shaft. In the invention, a motor can be effectively hooped and fixed, disassembling and assembling operation of the motor is completed on the basis that a motor shaft and an internal structure of the motor are not damaged, and the device is especially suitable for maintenance of rusted old motors.

The invention provides an auxiliary tool for section connection in ship hull construction. The auxiliary tool comprises two side main brackets and a plurality of connecting plates, wherein the plurality of connecting plates are connected with the two side main brackets, grooves in which a section can be clamped are formed in the lower ends of the main brackets, a horizontal pressing plate mechanism is welded to the grooves and is used for applying pressure to the front surface of the section clamped in the groove so as to horizontally fix the section in the groove, and a vertical pressing plate mechanism is welded to the top ends of the side main brackets by virtue of a horizontal frame and is used for applying pressure to the top of the section clamped in the groove so as to vertically fix the section. The auxiliary tool has the advantages of flexible and practical design, simplicity in operation, strong universality, low design and manufacturing cost, high use efficiency and convenience in use and storage and is not only suitable for connecting ball steel and sections of regular sizes.

The invention provides a coal mining face excavating loader and a coal mining device using the excavating loader. The coal mining device comprises a conveying chute and the coal mining face excavating loader, wherein the excavating loader comprises a base which is arranged on a coal mining face and can move along the movement direction of the conveying chute; the base is fixedly provided with an excavating bucket assembly for excavating a coal layer and filling coal into the conveying chute; the excavating bucket assembly comprises an excavating bucket bracket hinged on the base and an excavating bucket hinged to the excavating bucket bracket; the base is provided with a bracket driving oil cylinder for driving the excavating bucket bracket to move; and the excavating bucket bracket is provided with an excavating bucket driving oil cylinder for driving the excavating bucket to move. The whole structure of the coal mining device provided by the invention is simple and the blasting and coal falling operation does not need to be carried out; the working environment is effectively improved, and coal falling and coal loading mechanical work can be realized; the labor intensity of workers is reduced; and the coal mining device is particularly applicable to 'three-soft' coal layers or medium and small-sized mine mechanical operation with geological conditions similar with the 'three-soft' coal layers.

The invention discloses a spliced type door-window system comprising a skeleton. The skeleton is provided with one or more sash frames and one or more fixing frames. Opening window sashes are mountedin the sash frames, and first glass plates are mounted in the fixing frames; each window sash comprises a frame body and a second glass plate mounted in the frame body; the frame bodies of the windowsashes and the skeleton are each formed by connecting bearing beams; and a shielding edge is arranged on one side of each bearing beam, the shielding edges of the bearing beams connected to form the frame bodies of the window sashes extend out of the window sashes and shield gaps, formed when the window sashes are closed, between the window sashes and the sash frames, and the bearing beams connected to form the frame bodies of the window sashes are connected with first limiting pieces and second limiting pieces for clamping and fixing the second glass plates. The spliced type door-window system has the advantages that the stock type is less, and the design and manufacturing costs are low.

The invention discloses a dumper lifting hydraulic cylinder simulation working condition test device, and belongs to the technical field of hydraulic cylinders. A fixed bottom plate and a support IV are mounted on a foundation; a threaded hole of the fixed bottom plate is connected with a support I; the support I is hinged with a cylinder barrel pin shaft of a tested hydraulic cylinder; and the rear end of a loading carriage is hinged to the support IV, and a limiting block is fixed to the lower position of the rear end of the loading carriage. A threaded hole at the front end of the loading carriage is connected with a support II; the support II is hinged with a piston rod sleeve pin shaft of a tested oil cylinder; a return guide device is fixed at the lower side of the loading carriage; a guide counter bore is formed in the foundation; uniformly distributed bolts II are fixed on the loading carriage; and load blocks are selectively mounted on the bolts II. According to the device, the number of the load blocks is adjusted to match the actual load, and the related working conditions of a lifting cylinder during working are simulated to the maximum extent, so that the related performance such as the extension sequence, jamming, cylinder scoring, jittering, oil leakage and service life of the lifting cylinder are tested, the potential safety hazard is eliminated, and the related cost is greatly reduced.