167results about How to "Easy assembly and disassembly" patented technology

The invention discloses a double-type aluminum alloy walking arrangement for automatic MIG welding and a welding method thereof. The arrangement comprises a wire feeder walking trolley, a welding gunwalking trolley and a digital semi-automatic MIG welder; the wire feeder walking trolley is arranged on a wire feeding trolley rail and carries a wire feeder, the welding gun walking trolley is arranged on a welding gun trolley rail and fixedly provided with an oscillator, the oscillator is fixedly provided with a welding gun, the welding gun is connected with the wire feeder by a welding gun cable, and a signal wire is connected between the welding gun walking trolley and the wire feeder; and the MIG welder is connected with the wire feeder by a trunk cable. The walking arrangement can meet the production requirements of manual semi-automatic welding and can also fulfill the requirements of full-automatic welding at a flat welding position. The walking arrangement can reach the welding quality and welding efficiency equivalent to those of full-automatic welders, and has the advantages of low cost, applicable popularization and the like.

The invention discloses a portable intelligent safety fence, which relates to the technical field of protective fences. The safety fence comprises a main post consisting of a fencing post and a control cabinet for vertically fixing the fencing post on the ground, and a plurality of sub-posts consisting of fencing posts and a foundation for vertically fixing the fencing post on the ground; the upper end of the fencing post is provided with a warning lamp and a retractable lashing strip; the central part of the fencing post is symmetrically provided with two infrared correlation lenses and an adjusting handle for adjusting the angles of the infrared correlation lenses; an output socket, a power transfer switch K2, an audio-alert host receiving antenna, a solar panel, an intelligent-device fling-cut switch K1, a power input jack and a warning-lamp switch K3 are arranged on the surface of the control cabinet; and a control circuit and a power source for supplying power for the control circuit are arranged in the control cabinet. The safety fence has the advantages of convenient carrying, high alertness, strong flexibility, and obvious brightness generated by luminous components, and having conspicuous warning function no matter day or night, especially in the night as well as environmental protection and safety, and the like.

The invention discloses a plastic shell motor, which comprises a stator assembly (1), a rotor assembly (2), a control circuit board (3), bearings (4), a rotating shaft (5), a front end cover (6) and a rear end cover (7), wherein the front end cover (6) and the rear end cover (7) are assembled together to form a plurality of accommodating cavities; a bearing cavity (61) is formed at the top of the front end cover (6); a stator accommodating cavity (62) is formed below the bearing cavity (61) of the front end cover (6); a circuit board accommodating cavity (72) is formed below the stator accommodating cavity (62) and inside the rear end cover (7); a bearing cavity (71) is formed below the circuit board accommodating cavity (72) and at the bottom of the rear end cover (7); the bearings (4) are arranged inside the bearing cavities (61, 71); the stator assembly (1) is nested inside the stator accommodating cavity (62); and the control circuit board (3) is arranged inside the circuit board accommodating cavity (72). The plastic shell motor has the advantages of good reclaimable property, environmental protection, strong universality, convenient and reliable assembly and the like, and is suitable for a single-phase brushless motor and a three-phase brushless motor.

The invention discloses an LED (Light-Emitting Diode) display screen assembling component. The LED display screen assembling component comprises a locking rod, a left fixing block, a right fixing block, a pressing block, an arc-shaped groove, a positioning handle, a locking handle and a pushing block, wherein the left fixing block is locked with the arc-shaped groove through the locking rod and the locking handle; an arc-shaped sliding block which is integrally formed with the right fixing block is accommodated in the arc-shaped groove and sealed in the arc-shaped groove through the pressing block; the pushing block is connected onto the positioning handle; the pushing block is in meshing connection with the arc-shaped sliding block; the handheld part of the positioning handle is screwed tightly to fix the arc-shaped sliding block in the arc-shaped groove to form a relative radian between the left fixing block and the right fixing block. The invention further discloses an arc-shaped LED display screen. The defect that the conventional LED display screens can only be assembled into a flat LED screen or fixed-radian arc-shaped LED screen is overcome; the LED display screen assembling component and the arc-shaped LED display screen have the advantages of high universality degree, adaptability to installation in a plurality of places, high convenience in assembling and disassembling, high loadbearing capacity and stability, capacity of adjusting radian randomly within a certain angle range, and capacity of realizing seamless assembling.

The invention discloses a tunnel model test device for global observation of surrounding rock deformation and fracture. The tunnel model test device includes a model test box and a loading device for simulating pressure application to a soil layer; the model test box comprises a bottom wall, a peripheral side wall fixedly connected with the bottom wall in a detachable manner, and an observation assembly used for observing the interior of the model test box; the observation assembly is arranged on the side wall; the loading device includes a loading frame, a force applying mechanism and a force measuring mechanism; the model test box is located in the loading frame; and the force applying mechanism and the force measuring mechanism are arranged at the upper part of the loading frame. The tunnel model test device of the invention is simple and convenient to assemble. The size of the model test device can be adjusted according to different research objects. With the tunnel model test device adopted, change and influence in various aspects, of a tunnel surrounding rock support and protection system can be reflected more truly, comprehensively, intuitively and accurately, and therefore, the interaction mechanism of a tunnel surrounding rock support and protection structure can be better learned, and the mechanical properties of tunnel surrounding rock can be understood more deeply.

The invention relates to a relief valve for electric water heater. It includes valve body, internal relief valve seat, relainer ring, spring, internal relief valve core, external relief valve core, sealing washer, drawbar, regulating pressure cover regulating nut and screw rod, etc. Said invention also provides their connection mode and the concrete structure of the above-mentioned every component.

The invention relates to a high-precision RV speed reducer comprehensive testing device, which comprises a base, a first sliding platform, a second sliding platform, a first motor, a first torque sensor, a second motor, a second torque sensor, a first angle sensor, an input shaft bracket and an output shaft bracket. Compared with the prior art, the high-precision RV speed reducer comprehensive testing device designs the sliding platform assembly capable of being rapidly disassembled and assembled, so that the assembling and disassembling process of an to-be-tested RV speed reducer is more convenient and faster; the output shaft bracket and the input shaft bracket can be used for adapting to the requirements of sensors with different specifications; the limiting parts of the sliding platforms improve the test precision; the double-measuring-range torque sensors can adapt to measurement of speed reducers of different series models, and can also realize test of transmission precision under light load; an input shaft of the to-be-tested RV speed reducer is installed in two bearing inner rings sharing the same horizontal axis, thereby facilitating the adjustment of a bearing clearance;and the double-reading-head circular grating angle sensors meet the requirement that the transmission precision is tested in a high-speed state.

Three-phase magnetic cores for magnetic induction devices (e.g., transformers, coils, chokes), and methods for manufacturing them, are disclosed. The magnetic cores are generally constructed from three generally rectangular magnetic core frames having a stair-stepped configuration extending along side portions of the frames. The frames are arranged to form a triangular prism structure such that side portions of locally adjacent frames are uniformly engaged to form three core legs over which coils of a three-phase magnetic induction device may be placed.

The invention discloses a waste heat recovery for condensing type anti-corrosive gas/oil-fired boiler, which can effectively recover the physical heat of boiler flue; not only lots of sensible heat is recovered, but also the latent heat of vaporization discharged by condensation of water vapor. The structure is as follows: a common heat tube heat exchanger body and a solution spraying device are included. The heat tube heat exchanger body is used for transferring the heat from the flue side to the other side by the shock transmission of the heat tube, so as to heat the air or water; the solution sprayed by the sprayer is uniformly distributed in the heat exchange tube on the flue side and on the inner wall of the heat exchanger, so as to remove the corrosion from the weakly acidic solution formed by condensation of water vapor in the flue of the boiler.

The invention relates to a nonstandard concrete fracture performance test device, and belongs to the technical field of concrete material performance testing. The nonstandard concrete fracture performance test device comprises power transmission boards and a clamp block group, the power transmission boards are arranged at both ends of a concrete sample, the clamp block group is arranged on the power transmission boards, and is used for clamping the concrete sample, the clamp block group comprises two oppositely-arranged clamping blocks; each clamping block includes a holding part and a mounting plate which are mutually fixed together, the mounting plate is provided with a mounting hole; each power transmission board includes a power transmission board base and an articulated ear fixed on the outer side of the power transmission board base, the power transmission board base is provided with a plurality of fixing holes, and the clamping block blocks and the power transmission boards are fixedly connected by bolts passing through the mounting holes and the fixing holes. The nonstandard concrete fracture performance test device adopts an adjustable structure, is suitable for specimens of different sizes so as to meet the testing requirements of the specimens of different sizes, and has the advantages of simple and effective structure, easy assembly and disassembly, and the like.

The invention discloses a one-open-door three-closed-door four-door space device, which comprises transmission devices, opening and closing control devices, a support frame and four doors, wherein the support frame comprises two groups of supporting rods; the transmission devices comprise a center transmission device and one-way transmission devices; the center transmission device is fixed in the center of a square formwork of the support frame; each one-way transmission device is fixed at the upper end of each door, and is connected with the center transmission device; and each opening and closing control device is fixed at the lower end of each door, and is connected with the one-way transmission device of the same door through a support rod. The one-open-door three-closed-door space device has the advantages that the structure is simple; the assembling and the disassembling are easy; the space is saved; the problems of low ticketing service efficiency in a peak period and the like can be solved; and meanwhile, the device conforms to the new green and environment-friendly opinion.

The invention relates to automatic detection of the metallurgical industry and aims at providing a laser detection method and device for the vibration of a continuous casting mold. The method is that a horizontal/vertical benchmark module is arranged on a mold platform, laser transmitted by a laser displacement sensor is reflected by the surface of the sensor to a receiving surface, so that a light spot position signal changing along with the vibration of the mold is obtained; then the light spot position signal is transmitted to a signal processor of a lower computer to complete signal conversion, filtering, signal conditioning and pretreatment; and then the obtained signal is transmitted to a system controller of an upper computer to perform analysis and computation to obtain speed and acceleration data for the analysis of the vibration polarization situation of the mold. According to the laser detection method and the device, the phenomena of complexity in dismounting and easily caused environmental effect in a contact type measurement method are avoided, the dismounting is simple and convenient, and the measurement accuracy can be guaranteed easily. Different measurement benchmark surfaces can be freely and quickly selected; and the transportability of data transformation is strengthened by the conversion from a serial port to a USB. An excellent machine interface is provided, and an operator can master the operation easily.

The present invention is filter element life detecting method and device for drinking water purifier used in household and office. The drinking water purifier has structure comprising lower tub, middle tub and upper tub superposed successively, upper filter element in the bottom of the upper tub, and lower filter element in the lower part of the middle tub. The filter element life detection is completed with the water probe installed inside the middle tub and an alarm connected to the water probe. The water level inside the middle tub reflects the choking state of the lower filter element, and when the water probe inside the middle tub is immersed, it will send some signal and the alarm will process the signal to give out one acousto-optic prompt signal to show the status of the filter element.

The invention discloses a friction welding device with a preheating function, and relates to the technical field of friction welding. The friction welding device with the preheating function comprisesa base, wherein a fixing table is arranged at the top end of the base; a motor and a fixing block are arranged at the top end of the fixing table; the fixing block is close to the position of the output end of the motor; and the inner wall of the fixing block is sleeved with a bearing. According to the invention, the preheating function is achieved through arrangement for a preheating table, a second electric push rod, a preheating box, an induction coil, a connecting hole, a telescopic block, a spring and a transformer, an alternating current is led in through the induction coil, and therefore an alternating magnetic field is formed, and materials to be welded generate vortexes to be heated through the magnetic field; and the height of the induction coil can be adjusted through the second electric push rod, the induction coil is configured to be in a semi-arc shape, and the materials can be conveniently placed and taken out through the semi-arc shape.

The invention discloses a rotary pivot bearing used for driving by a shield spiral machine, which comprises an outer ring, an intermediate ring, an inner ring and a roller, the peripheral direction of the inner ring can be rotationally and axially positioned in the intermediate ring, a raceway used for accommodating the roller is provided between the inner ring and the intermediate ring, the roller can be positioned in the raceway in a rolling mode, the peripheral direction of the intermediate ring is chocked and is capable of axially rotating a setting angle to insert in the outer ring. According to the invention, a rotating shaft is allowed to possess offset value with a certain angle, thereby the impact caused by a spiral machine due to the swing of a screw rod during the operation can be reduced, the usage period of a bearing driven by the spiral machine can be substantially increased, the roller of the bearing employs a three-row roller form, so that the axial thrust and the reverse thrust caused by muck pressure on the bearing can be born when the spiral machine utilizes the positive and negative rotation, and the radial force generated by overturning moment which is generated by swing and deadweight of the rotating shaft of the screw rod on the bearing can be born, the outer ring and the intermediate ring employ a separate structure, thereby assembling and dismounting processes can be conveniently carried out.

The invention provides a wind-proof device used in the inverted construction of large-size storage tanks and an application method thereof. The wind-proof device used in the inverted construction of large-size storage tanks comprises a tank wall and an expansive ring. A clamping bench is arranged on the tank wall. The expansive ring is rested against the clamping bench and is hoisted by a hydraulic cylinder. The wind-proof device used in the inverted construction of large-size storage tanks further comprises a tilted supporting rod and a vertical rod. The lower end of the tilted supporting rod is connected together with the base plate of the storage tank. The upper end of the tilted supporting rod is connected together with the upper end of the vertical rod. The lower end of the vertical rod is connected together with the base plate of the storage tank. The upper part of the vertical rod is mounted to the inner side of the expansive ring. The wind-proof device with the advantages of reasonable and compact structure, easy use, simple structure and convenience for assembly and disassembly can protect against the transverse load of wind during the inverted construction of large-size storage tanks, improve the lifting stability of the tank without affecting the smooth operation of vertically lifting the tank by the hydraulic cylinder, and facilitate the assembly and the construction of the storage tank; therefore, the invention has the characteristics of safety, simplification and low cost.

The invention relates to a thread plug-in type electronic control hydraulic lock which comprises a flux sleeve, a fixed iron, a moving iron, a coil, a main valve core, a pilot valve core, a valve pocket, a piston, a valve seat and a check valve core, wherein the flux sleeve comprises a body and an extension tube which is formed by extending the body backward; the valve seat comprises a first oil port and a second oil port, the main valve core is limited on the rear end of the valve seat, the front end of the valve seat is provided with a first through oil hole and a second through oil hole which are provided with axial openings, the pilot valve core axially extends forwards from the moving iron, enters into the hollow cavity of the main valve core and the front end part of the pilot valve core is coordinated with the opening and closure of the first through oil hole of the main valve core; the front end of the valve pocket is provides a third air port with an axial opening and a fourth air port which is radially arranged in the middle part; and the front end of the check valve core is provided with a driving face, the side wall of the check valve core is provided with a third through oil hole which can be connected or disconnected with the fourth air port. Compared with the prior art, the hydraulic lock provided by the invention has the advantages that the control release load of the hydraulic lock is realized through the electronic control structure, the integral structure is compact, multifunction integration is realized, the volume is small, the assembly and disassembly are convenient and rapid, and the property is reliable and stable in the long term usage.

The invention discloses a versatile combined rowing and swinging bicycle, which is characterized in that: an inner sleeve at the front end of a beam [1] is inserted and locked with a C-shaped outer sleeve with a seat slide way at the rear end of the beam [1], the top end of the inner sleeve of the beam [1] is connected with a front fork [4] via a shaft, pedal devices [11] are installed at the both ends of the cross beam of the front fork [4], the lower end of the front fork [4] inclines inwards and extends to be connected with the front axles of two wheels, the C-shaped outer sleeve of the beam [1] is inserted and locked with a shaft on the top of a beam column [2], and a slide seat [9] is installed on the slide way of the beam [1] to compose a combined swinging bicycle. The combined swinging bicycle becomes a road snow stick swinging bicycle in case that a double-rod road snow stick with a rubber head is used, becomes a road single-paddle swinging bicycle in case that a double-blade road single paddle with a rubber head is used, and becomes a versatile combined rowing and swinging bicycle in case that a versatile double-rod D-shaped chain disc rowing device is used; and the combined swinging bicycle may become a unique and novel foot-controlled electric swinging bicycle or rowing and swinging bicycle by adding a motor device. The bicycle is easy to detach and combine, as well as is an ideal instrument for the sports events, exercise and rehabilitation of people.

The invention discloses a green and energy-saving fabricated building wall and a construction method thereof, and is applicable to the field of buildings. The green and energy-saving fabricated building wall comprises a wall body, insertion strips, insertion columns, protruding blocks, grooves, air inlets, air outlets, clamping groove mechanisms and an air channel, the air channel is dug in the inner side of the wall body, a detachable ventilation plate is installed outside the air channel through fastening bolts, and a clamping groove used for being inserted into an air filtering plate or a water cooling plate is formed in the inner side of the air channel and used for purifying and cooling indoor air; the protruding blocks, the grooves and the insertion strips are arranged on the periphery of the building wall body, the wall body is integrally poured and formed, direct hoisting and assembling are facilitated, clamping groove mechanisms are arranged in the middles of the protruding blocks, internal locking is achieved through wrench rotating mechanisms after assembling, assembling and disassembling are convenient and fast, and a concrete fixing base is used when the wall body is connected with ground and a roof; the insertion strips at the upper end and the lower end of the wall body and the concrete fixing base are fixed, fastening and locking are achieved through an adjustable pressing plate, and the concrete fixing base is fixed to the ground and the roof through bolts or pouring.

The invention discloses a portable three-in-one ball net rack. The portable three-in-one ball net rack comprises a first support and a second support which are identical in structure, the first support comprises a first base, a hollow first supporting rod is installed on the first base, the first supporting rod is provided with three first fixing holes, a second supporting rod is located in a cavity of the first supporting rod, a second fixing hole is formed in the second supporting rod, and one end of a first fixing piece penetrates through the first fixing holes and is in threaded connectionwith the second fixing hole; a ball net comprises a cylinder, a first bearing and a second bearing are fixed to the upper end surface and the lower end surface in the cylinder, a through hole is formed in the upper end surface of the cylinder, the bottom of a rotary shaft is fixedly connected to the first bearing, and the upper end of the rotary shaft is fixedly connected to the second bearing. Afirst groove is formed in the lateral side of the cylinder, the two ends of a net body are fixedly connected with a fifth supporting rod and a sixth supporting rod, the fifth supporting rod is installed on the rotary shaft, and the lower end of the cylinder is in threaded connection with the second supporting rod. The height of the ball net can be adjusted, and the ball net can be wound on the rotary shaft, so that the three-in-one ball net rack is orderly and convenient to carry.

The invention provides a drivepipe type purification device capable of efficiently removing pesticide residuals of an agricultural field water body. The drivepipe type purification device structurally comprises a hollow organic glass outer tube, a PVC transparent inner tube, an organic glass tank, an organic glass clapboard, a moving type arresting barrier and a clamping trough, wherein the PVC transparent inner tube is arranged in the hollow organic glass outer tube, and the moving type arresting barriers are arranged on two ends of the hollow organic glass outer tube; the hollow organic glass outer tube and the PVC transparent inner tube are assembled to form a purification drivepipe which is positioned in the organic glass tank, the clamping trough is arranged on the inner wall of the organic glass tank, and the organic glass clapboard is fixedly arranged on the clamping trough; a nanocatalyst loading layer is covered on the outer surface of the hollow organic glass outer tube, and pesticide degradation bacteria loading layers are arranged on the inner surface and the outer surface of the PVC transparent inner tube. The drivepipe type purification device has the advantages of improving the efficiency of removing pesticide residuals of an agricultural field water body, being convenient to apply, low in cost and capable of being repeatedly used for many times.

The invention discloses a phased-array antenna and a design and expansion method thereof, and belongs to the technical field of antennas. The antenna comprises sub-array modules which are periodicallyarranged, wherein each sub-array module comprises a plurality of antenna units, a transceiving module and a beam synthesis network, the plurality of antenna units are arranged at uniform distance, the distance among the antenna units is larger than a signal wavelength, the antenna units are divided to various types according to a polarization position of a phase center, and the phase centers of different types of antenna units are arranged at different polarization positions. The regular array framework has relatively high actinal surface utilization efficiency, relatively low array element numbers and cost and is suitable for engineering assembly and mass production, and the expansion of a large-size array performance parameter is facilitated.

The invention discloses an installation method for an anti-floating overall template of a water collection pit. The installation method comprises early-stage preparation and on-site assembly, wherein the early-stage preparation comprises the following steps: excavating a splay groove in the bottom of the water collection pit during basic earth excavation; burying a fixing pull rod of a water stop ring before foundation grouting of a cushion layer; grouting the splay groove when grouting the cushion layer; the on-site assembly comprises the following steps: cutting a PVC (Polyvinyl Chloride) template according to interface dimensions of the water collection pit; fixing square tubes on the PVC template; fixing soft plastic pressing bars at corner seams of the PVC template; connecting the square tubes at the corners by using flexible steel angle ferrules which can be used for tightly pressing the soft plastic pressing bars; fixing the square tubes at a second layer on the square tubes at a first layer by using fixing inserting rods to finish assembly of the template. The anti-floating overall template is simple and convenient to manufacture and install; the PVC template and concrete are easy to dismount because of small cohesive force there-between; therefore, the quality is guaranteed, the efficiency is improved, repeated labor capacity is reduced, influences of human factors are also correspondingly reduced greatly, and the pass percent of products is greatly increased.

The invention relates to a combined frame, a bearing device with the frame, and a manufacture method thereof. The frame comprises a frame clamp and at least two projected tenons which are parallelly arranged at one side of the frame clamp, wherein a recessed tenon trough is formed between the two adjacent projected tenons, wherein the projected tenons on two frames are in matched connection with the recessed tenon trough. On a same frame clamp, the tenons and the recessed tenon trough are separately arranged. Each projected tenon has a through frame-shaped structure. Two ends of the frame clamp are provided with connecting structures which cooperate with each other. The combined frame, the bearing device with the frame, and the manufacture method have advantages of wide use, high practicability, random combination and splicing, small number of fittings, multiple functions, time-saving and labor-saving effect, simple operation and high speed in assembling and detachment, high recycling rate, resource-saving and waste-reducing function, space occupation reduction and low manufacture cost.

The invention relates to a carbon fiber workpiece mold adopting a novel demolding manner. The carbon fiber workpiece mold comprises a mold body, a plugging head, a compression air connector assembly and a pressing plate; during molding curing, the pressing plate is compressed through a pressing plate bolt, the plugging head is compressed through the pressing plate, the plugging head and the mold body are assembled together, in the demolding process, the pressing plate is compressed through the bolt, a connector is pressed through the pressing plate, the connector and the compression air connector assembly are assembled together with the mold body, and the mold achieves demolding through a compression air demolding manner. According to the carbon fiber workpiece mold, the compression air demolding manner is adopted, the problems that an acting point does not exist, and a workpiece is damaged by uneven stress during simple mechanical demolding are solved, and the problem that a core dividing block mold is difficult to assemble and position can be solved.

The invention discloses a tree-root-like anchor rod and an installation method. The anchor rod comprises a main anchor rod and a sleeve body; one end, extending into soil mass, of the main anchor rod is fixedly connected with a fixed sleeve; the fixed sleeve is sleeved with a movable sleeve; the movable sleeve is sleeved with a spring; the spring is compressed and fixed between the fixed sleeve and the movable sleeve; the lower end of the fixed sleeve is fixedly connected with a base sleeve; an outward openable strut section is arranged between the movable sleeve and the base sleeve, and two ends of the strut section respectively prop up the movable sleeve and the base sleeve; and a clip strip which can clamp the movable sleeve and the base sleeve is arranged at the outer wall of the movable sleeve in a penetrating and inserting way, strain gages are attached to the outer wall of the movable sleeve and the inner wall of the sleeve body inlaying into the soil mass, the clip strip and the strain gages are all connected with a control device, and a wire ring is twined on the clip strip. The elongation of the anchor rod is increased, thus the anchor rod can adapt to sudden disaster, can automatically monitor the deformation of an anchorage body and implements an emergency response so as to effectively prevent the anchorage body from falling off from the soil mass.

The invention provides a special tool for assembling and disassembling horizontal bus ground wires with excellent use effect. The special comprises a high-voltage insulated brake pull-rod, wherein the high-voltage insulated brake pull-rod comprises an operation rod; the upper part of the operation rod is fixedly connected with a work rod which is vertical to the operation rod; the top end of the operation rod is sleeved with a connection sleeve; the top end of the connection sleeve is fixedly connected with a sleeve rod; and an included angle between the sleeve rod and the connection sleeve is an obtuse angle.

The invention discloses an X-shaped precast reinforced concrete pile mould which comprises a V-shaped shaping mould plate, a reversed-V-shaped shaping mould plate, a bottom plate and an end head plate. The reversed-V-shaped shaping mould plate is connected and fixed above the V-shaped shaping mould plate through bolts to form an X-shaped cavity; the bottom plate is welded to the bottom of the V-shaped shaping mould plate to bring convenience to suspending and piling the mould; the end head plate is fixed to the two ends of a combined body formed by the reversed-V-shaped shaping mould plate and the V-shaped shaping mould plate through bolts to seal openings; and a feeding opening is formed in the junction between two lateral face plates of the reversed-V-shaped shaping mould plate. The X-shaped precast reinforced concrete pile mould is simple and compact in structure, good in forming effect and high in mould assembling and disassembling efficiency.

The invention discloses a reusable energy-absorbing steering column of an automobile. The reusable energy-absorbing steering column comprises a steering wheel and a steering shaft, and is characterized in that the steering shaft is connected with a hollow shaft by three plastic pins which are circumferentially and uniformly distributed, a sleeve is connected onto the hollow shaft by a clamp ring, a compression spring is arranged in the hollow shaft, the upper end of the compression spring sleeves a shaft end of the steering shaft, the lower end of the compression spring is arranged in a compression spring stop table arranged at a head end of the hollow shaft, a first slider and a second slider are arranged on the steering shaft and are connected with each other by a light compression spring arranged between the first slider and the second slider, and an annular clamp groove is formed in the hollow shaft and is positioned in the middle of the sleeve. The reusable energy-absorbing steering column has the advantages of reasonable structure, convenience in assembling and disassembling, good safety, low maintenance cost and the like. Besides, secondary injury to drivers can be prevented by the aid of the reusable energy-absorbing steering column.

The invention relates to a steel structural building, in particular to an assembled steel structural building. The assembled steel structural building comprises transverse steel beams, fastening screws I, transverse slide holes, vertical steel beams, trapezoidal convex bars II, thread holes, a middle batten, a center shaft, a slide cylinder and an inclined steel beam; the assembled steel structural building is convenient to disassemble and assemble and excellent in supporting property. Two vertical steel beams are arranged left and right; the trapezoidal convex bars II are arranged on the front sides of the two vertical steel beams; two transverse steel beams are arranged up and down; the left and right ends of the transverse steel beam at the upper end are slidingly connected to the upperends of the two trapezpidal convex bars II; the left and right ends of the transverse steel beam at the lower end are slidingly connected to the lower ends of the two trapezoidal convex bars II; theleft and right ends of the two transverse steel beams are connected with the fastening screws I through threads; the four fastening screws I are ejected against the corresponding trapezoidal convex bars II; the transverse slide holes are formed in the two transverse steel beams; the two transverse slide holes are oppositely arranged; and the thread holes are formed in the middle parts of the backsides of the two vertical steel beams.