79results about How to "Stay stable" patented technology

The invention discloses a crude oil storage tank construction hanging basket and a construction method. The crude oil storage tank construction hanging basket comprises a hanging basket support, a clamping device, a support stabilizing device, a hanging basket body, a hanging basket lifting mechanism and a hanging basket moving mechanism. The hanging basket support is arranged on the hanging basket moving mechanism, the hanging basket moving mechanism is arranged on the upper edge of the crude oil storage tank, and a clamping device is arranged on the hanging basket support and can be clamped on the upper edge of the crude oil storage tank; a support stabilizing device is further arranged at the end of the hanging basket support and used for fixing the hanging basket support. One end of the hanging basket lifting mechanism is arranged in the crude oil storage tank, and the other end is connected with the hanging basket through the hanging basket support. According to the crude oil storage tank construction hanging basket and the construction method, the hanging basket support is arranged on the hanging basket moving mechanism, the hanging basket moving mechanism is arranged on the upper edge of a crude oil storage tank, and the position of the hanging basket can be adjusted at will; a clamping device is arranged on the hanging basket support and can be clamped on the upper edge of the crude oil storage tank, and the position of the hanging basket can be fixed in all directions.

The present invention provides a power system for a rolling curtain device, including a one-way resistance module, the one-way resistance module including a resistance module housing, a rotating shaft, a one-way transmission assembly, a mounting seat and a resistance member, the resistance member is used to provide a rotational resistance between the resistance module housing and the mounting seat; the one-way transmission assembly is installed between the mounting seat and the rotating shaft, so that the mounting seat rotates unidirectionally relative to the rotating shaft, thereby providing a one-way resistance when the curtain body is released from the rolling tube. The resistance can make up for the tolerance between the deadweight of the curtain body and the total resilience of the power coil spring module, so that the curtain body can stably stay at the required height, and can improve the hand feel of the cordless rolling curtain device when it is pulled down; the curtain body can be smoothly retracted, which improves the smoothness of the curtain body retraction of the cordless rolling curtain device.

The utility model relates to the technical field of hoisting equipment, in particular to a hoisting device of a wind power sleeve, which comprises a movable base and an upright post for hoisting the wind power sleeve, a hoisting case is mounted at the top of the upright post, and a fixing mechanism is mounted at the bottom of one side of the upright post; a rotating disc is embedded in the center of the top face of the movable base. Transportation and positioning of the whole device in a wind power plant are facilitated through the arranged movable base, the stand columns provide stable supporting, safety and reliability in the hoisting process are guaranteed, the servo motor is installed in the hoisting machine box, the winding and unwinding process of the steel strand rope can be accurately controlled, and the hoisting efficiency is improved. A plurality of groups of limiting insertion holes which are uniformly and annularly arranged at equal intervals are formed in the edge of the rotating disc and are matched with locking screw rods in the fixing mechanism for use, so that the hoisting angle of the wind power sleeve is accurately adjusted, and the hoisting angle of the wind power sleeve can be conveniently adjusted by selecting the proper limiting insertion holes to insert the locking screw rods, and different mounting requirements are met.

The utility model relates to the field of electric vehicle charging equipment, in particular to a movable charging pile socket which comprises a charging pile body, one side of the surface of the charging pile body is provided with a first moving groove, one side of the first moving groove is connected with a socket panel through a moving assembly, and the moving assembly comprises a first moving block. A first moving groove is formed in the bottom end of the first moving block, a plurality of grooves are formed in the bottom end of the first moving groove at equal intervals, a limiting hole is formed in the bottom end of the first moving block, and a limiting assembly is installed in the limiting hole. According to the charging pile, the socket panel can stably stay at any required position, accidental displacement or falling of the socket panel in the charging process is avoided, the problems that a socket of a traditional charging pile is fixed in position and inconvenient to use are solved, and a more convenient solution is provided for charging of the two-wheeled electric vehicle.

The utility model relates to the technical field of sand box turnover machines, in particular to a sand box turnover machine with an active limiting mechanism, which is characterized in that a base is fixedly arranged below a support, a pressing plate is fixedly arranged at one end of a second power source piston rod, a friction pad is fixedly arranged on the lower surface of the pressing plate, and a cooling cleaning device is fixedly arranged on a first fixing block; a second air cylinder drives a pressing plate to move downwards, a friction pad fixed to the lower surface of the pressing plate conducts extrusion friction with the side wall of an overturning wheel, friction speed reduction is conducted on the overturning wheel, the overturning wheel is made to stay at the needed position, the overturning wheel is made to stay more stably, the second air cylinder is more sensitive and efficient in response, and a cooling machine is started to cool the sand box; after operation, a fourth hydraulic rod in a fifth fixing block drives a fixing plate to move up and down, the fixing plate drives a brush to move up and down to be attached to the upper surface of the sand box, a third hydraulic rod is started to drive the fifth fixing block to move left and right, impurities on the upper surface of the sand box are swept off, and product flaws are reduced.

The utility model relates to the technical field of steam turbine condenser mounting tools, and discloses a special tool for mounting a steam turbine condenser partition plate, which comprises a steam turbine condenser cylinder, fixing columns are arranged on the outer sides of the two ends of the steam turbine condenser cylinder, and a connecting beam column is arranged between every two adjacent fixing columns. A bolt connecting column is movably installed in the fixing column in a penetrating mode, the fixing column is connected with a connecting beam column through the bolt connecting column, an inserting hole matched with the bolt connecting column is formed in the connecting beam column, and a first sliding column is movably installed in the connecting beam column in a penetrating mode; the motor works to drive the rotating gear to rotate, when the rotating gear rotates, the first movable rack column and the second movable rack column are driven to move together and are connected with the inserting grooves in the connecting beam column, it is ensured that the fixing frame is stable in the connecting beam column, and meanwhile it is ensured that the steam turbine condenser partition plate is stable.

The invention relates to the field of blanking mechanisms, in particular to a stepped servo press blanking mechanism which comprises a material table and a transfer assembly. The material table comprises a first-time material taking platform, a second-time material taking platform, a third-time material taking platform and a Y-direction conveying belt which are sequentially distributed downwards in a stepped mode. The transferring assembly comprises a driving mechanism, a primary material taking transverse moving mechanism, a secondary material taking transverse moving mechanism and a tertiary material taking transverse moving mechanism, wherein the primary material taking transverse moving mechanism, the secondary material taking transverse moving mechanism and the tertiary material taking transverse moving mechanism are arranged on the driving mechanism, and the positions of the primary material taking transverse moving mechanism, the secondary material taking transverse moving mechanism and the tertiary material taking transverse moving mechanism are sequentially arranged downwards in a stepped mode. The primary material taking transverse moving mechanism is used for transferring products on the primary material taking platform to the secondary material taking platform. The secondary material taking transverse moving mechanism synchronously transfers products on the secondary material taking platform to the third material taking platform. The third-time material taking transverse moving mechanism synchronously transfers products on the third-time material taking platform to the Y-direction conveying belt.

The utility model relates to the technical field of low-voltage power distribution cabinets, and discloses a low-voltage power distribution cabinet which comprises a low-voltage power distribution cabinet body, a cabinet door, a transparent observation window and an operation screen, one end of the low-voltage power distribution cabinet body is provided with the cabinet door in a hinged mode, and the outer surface of the cabinet door is provided with the transparent observation window and the operation screen. The low-voltage power distribution cabinet comprises a low-voltage power distribution cabinet body, a storage groove is formed in the lower end of the low-voltage power distribution cabinet body, sliding grooves are formed in the two sides of the inner wall of the storage groove, sliding blocks are slidably installed in the sliding grooves, standing plates are fixedly installed on the sides, close to each other, of the sliding blocks, and installation grooves are formed in the two sides of the bottom of each standing plate; a supporting seat is mounted on one side of the interior of the mounting groove through a movable shaft, a base is fixedly mounted at the bottom of the supporting seat, an elastic clamping block is fixedly mounted in the mounting groove, when an operator needs to stand, the standing plate is pulled out of the storage groove, the interior of the sliding groove slides, the sliding block is sleeved with a damping rubber ring, and the damping rubber ring is fixedly connected with the supporting seat; and the standing plate can stably stay after the position is adjusted.

The invention relates to the technical field of cable recovery, in particular to a cable reel with a detachable function. Through the design of introducing the variable-diameter winding roller, the flexible variable-diameter function in the cable winding process is achieved. And when the cable coil needs to be taken down, the variable-diameter driving part and the sizing part work cooperatively to drive the variable-diameter winding roller to reduce the diameter, so that a separation gap is created between the cable and the winding roller. By means of the innovative design, the material taking difficulty caused by winding friction force is greatly reduced, and the cable taking and placing process is smoother and more efficient.

The invention belongs to the technical field of safety anti-falling nets, and particularly relates to a safety anti-falling net structure for building construction, which comprises two transverse plates, an anti-falling net is arranged between the two transverse plates, and the anti-falling net is formed by weaving a plurality of transverse ropes and longitudinal ropes at equal intervals in a staggered manner. Connecting seats are arranged on the surface of the transverse rope at equal intervals; when an object or a constructor in a high-rise building accidentally falls down, the object or the constructor is intercepted by the anti-falling net, during interception, when the anti-falling net is impacted, the upper half part of the connecting block is extruded to deform, and the adhesive bag is punctured by the crevasse sharp block, so that glue in the adhesive bag permeates to the surface of the cover cotton, and the adhesive in the adhesive bag is adhered to the surface of the cover cotton. The surface of the anti-falling net has stickiness, the stickiness of the surface of the anti-falling net can increase friction force when the anti-falling net makes contact with a human body, the human body can stay on the net more stably after making contact with the anti-falling net, slipping or rolling is not prone to occurring, and secondary damage caused by slipping or rolling is reduced.

The present invention is specifically a descaling brush driving device for an electrochemical reaction chamber, which solves the problem of deterioration of water quality during water treatment in an existing electrochemical reaction chamber. A descaling brush driving device for an electrochemical reaction chamber, wherein the reaction chamber body comprises an inner cathode tube, an outer cathode tube, a cathode tube and an anode tube; a descaling brush body with brush wires is arranged in the reaction chamber body; a screw is arranged in the middle of the inner cathode tube, and a screw brake mechanism is arranged at the bottom end of the screw; a spline shaft is arranged on the outside of the screw, a spline sleeve is sleeved on the outside of the spline shaft, a reduction motor connected to the spline sleeve is arranged on the outside of the bearing seat, a descaling brush mounting frame is fixed on the spline shaft, and a descaling brush gear is fixed on the top of the descaling brush body. Under the condition of configuring a reduction motor, the present invention realizes the reciprocating cyclic motion process of the descaling brush body, i.e., straight down-directional rotation-straight up-standby, and at the same time realizes the self-rotation motion of the descaling brush body, with a simple and practical structure and low manufacturing cost.

The utility model discloses a pin assembly and a plug. The pin assembly comprises a first shell, a rotating shaft, a pin and a limiting assembly, the first shell is provided with a containing groove and a receding opening; the rotating shaft is located in the containing groove and rotationally connected to the first shell in the first axial direction, the circumferential side face of the rotating shaft comprises a positioning face, and the positioning face comprises a first abutting face and a second abutting face which are arranged in the circumferential direction of the rotating shaft; the pin penetrates through the avoidance opening, and the rotation track of the pin is provided with a storage position and a first unfolding position; when the pin is located at the storage position, the extension direction of the pin is a first direction, and the limiting assembly abuts against the first abutting surface; when the pin is located at the first unfolding position, the extension direction of the pin is a second direction, the limiting assembly abuts against the second abutting face, and the included angle alpha formed by the first direction and the second direction is larger than 0 degree and smaller than 90 degrees. And the storage volume of the plug can be reduced, so that the plug is more convenient to carry and store.

The locking mechanism comprises a rotating piece, a base, a switch and a locking piece, the base serves as a main body support, the rotating piece is arranged in the base and can rotate, the switch is arranged on the base, the locking piece is arranged in a floating mode and abuts against the switch, and a locking part of the locking piece can be selectively locked with the rotating piece; when the switch rotates upwards on the base, the locking piece is lifted up and is unlocked from the rotating piece; when the switch rotates downwards, the locking piece falls down to realize locking of the switch and the locking piece; the lifting screen comprises a main body piece, a cross beam and the locking mechanism, the main body piece is arranged on the cross beam in a lifting mode, rotation of the rotating piece is in linkage with lifting of the main body piece, and locking of the locking mechanism on the rotating piece is locking of the main body piece; according to the mechanism, locking and unlocking can be controlled through simple switch rotation operation, and the use convenience is greatly improved; the unique floating abutting design of the locking piece can effectively prevent downward sliding caused by gravity, and the stability of the equipment is ensured.

The present invention discloses a display lifting device, comprising: a bracket, a lifting seat and a pulling mechanism, the bracket is provided with an accommodating space, the lifting seat is provided with a slider slidably mounted in the accommodating space, and there is friction between the slider and the inner wall of the accommodating space; the pulling mechanism is installed in the lifting seat, comprising a coil spring, a coil spring seat, a pulley assembly and a pull rope, the coil spring seat is rotatably installed in the lifting seat, one end of the pull rope is fixedly connected to the coil spring seat, and the other end thereof is connected to the slider by bypassing the pulley assembly; the coil spring comprises a free end and a drum portion, the free end is fixedly connected to the coil spring seat, and the drum portion is rotatably arranged in the lifting seat. The display lifting device of the present invention greatly reduces the volume of the bracket, reduces the cost, has a simple structure, and is easy to process and assemble.

The utility model discloses a lighting head lamp which comprises a lamp shell, the lamp shell comprises a containing bin and a battery bin, a containing space is formed in the containing bin, the containing space is used for at least containing a light-emitting body and a control module, the battery bin is connected with the containing bin, and the battery bin protrudes out of the back face of the containing bin; the connecting base at least comprises a clamping part, the clamping part extends in the direction close to the battery bin, a clamping opening is formed in the front end of the clamping part, and the clamping opening is matched with the outer wall of the battery bin in a clamping mode so that the connecting base can rotate relative to the lamp shell; the lighting panel is installed on the lamp shell, a light hole is formed in the position, corresponding to the light-emitting body, of the lighting panel, the structure is more compact, and use convenience is improved.

The invention relates to the technical field of corrosion inhibitors and metal corrosion prevention, and discloses a high-density temperature-resistant corrosion inhibitor for an oil extraction pump and a preparation method thereof.The corrosion inhibitor is composed of sodium benzenesulfonate 180.00-200.00 g / L, sodium molybdate 10.00-15.00 g / L and sodium silicate 0.10-0.20 g / L. deionized water serves as a solvent, the density of the corrosion inhibitor is larger than 1.150 g / mL, and the high-density temperature-resistant corrosion inhibitor has excellent corrosion inhibition performance on 45 # carbon steel and 316 L stainless steel in the high-pressure water environment at the temperature of 120-180 DEG C; and the room-temperature corrosion inhibition efficiency is not lower than 85.00%. The corrosion inhibitor is a compound corrosion inhibitor, a compact corrosion-resistant film is formed through the synergistic effect of components, and the corrosion inhibitor is environmentally friendly, low in cost, easy to prepare and capable of accurately adapting to the extreme working condition of direct electric heating auxiliary exploitation of thick oil, effectively solves the corrosion problem of an oil extraction pump protector cavity, prolongs the service life of equipment and has wide application prospects and huge economic benefits.

The utility model provides an eccentric rotary ball valve, and relates to the field of ball valves. The eccentric rotating ball valve comprises a valve body structure, the valve body structure comprises a valve shell, an operating valve rod and a mounting plate, an operating wheel is arranged on the outer side of the operating valve rod in a sliding mode, an outer groove is formed in the outer side of the operating valve rod, a thin rod is rotationally arranged on one side of the operating wheel, and a clamping rod is fixedly connected to one end of the thin rod. According to the eccentric rotating ball valve, after the sealing work of the eccentric rotating ball valve is completed through the operation valve rod, the operation wheel is pushed to slide on the outer side of the operation valve rod, and when a sliding block slides into an outer groove formed in the outer side of the operation valve rod, the operation wheel rotates to drive the sliding block to rotate in the outer groove; the rotating operation wheel cannot cause the operation valve rod to rotate, after the eccentric rotating ball valve is closed, the situation that the operation valve rod rotates due to the fact that a user mistakenly touches the operation wheel is avoided, and it is guaranteed that the eccentric rotating ball valve plays a stable sealing role.

The utility model discloses an analog quantity automatic speed change temperature controller, which comprises a temperature controller control panel, a protective frame and a protective cover, the temperature controller control panel is embedded in the protective frame, one side of the protective cover is provided with a sliding rod, one side of the sliding rod is provided with a sliding sheet, the sliding sheet and the sliding rod form an L shape, one end of the protective frame is provided with a first sliding groove, and the other end of the protective frame is provided with a second sliding groove. A first sliding groove is formed in the inner wall of one side of the protective cover, the sliding rod is matched in the first sliding groove in a sliding mode, a second sliding groove is formed in the inner wall of one side of the first sliding groove, the sliding piece is matched in the second sliding groove in a sliding mode, a positioning hole is formed in the top end of the first sliding groove and the top end of the second sliding groove, and the positioning hole extends from the protective cover to the protective frame. The protective cover can slide on the protective frame due to the cooperation of the sliding rod and the sliding piece, so that the protective cover can protect the control panel of the temperature controller and prevent the problem of mistaken touch, and due to the sliding of the protective cover, the control panel can be adjusted when operation is needed.

The utility model discloses a multi-rotor unmanned aerial vehicle with 16 shafts and 32 contra-rotation, which belongs to the field of unmanned aerial vehicle equipment and comprises an unmanned aerial vehicle body, vehicle arms, rotor support arm pieces and a support frame, the unmanned aerial vehicle body is provided with the 16 contra-rotation rotor support arm pieces, 32 upper shaft rotors and 32 lower shaft rotors, and power can be provided for the rotor unmanned aerial vehicle by means of a power system of the 32 shaft rotors. The rotor unmanned aerial vehicle can be kept stable during flight, the load of the rotor unmanned aerial vehicle can be increased by means of the large-power power system, and therefore large-load flight is achieved, and then by means of the multiple sets of side supports arranged on the foot stool at equal intervals and the reinforcing rods connected between every two side supports, the rotor unmanned aerial vehicle can be more stable in flight. The foot stands and the side supports are combined into a triangular structure by means of the reinforcing rods, the stability and strength of the whole supporting frame are improved by means of the stability of the triangular structure, and it is guaranteed that the multi-rotor unmanned aerial vehicle can stably stay on the ground after being parked.

The utility model relates to the technical field of non-woven fabric production, in particular to a limiting mechanism for a rice crust packaging box sealing device, which comprises a mounting plate, an adjusting component is connected below the mounting plate, a connecting frame is connected below the adjusting component, and the connecting frame is connected with a connecting rod. A connecting plate is arranged at the lower end of the connecting frame. The limiting mechanism can be mounted in the packaging box sealing device through the mounting plate, the position of the baffle can be rapidly adjusted by controlling the electric telescopic rod to work, the baffle makes direct contact with a packaging box, it is ensured that the packaging box can stably and accurately stay at the sealing position, and the rotating disc and the lead screw can be driven to rotate by rotating the handle; and the adjusting block and the electric telescopic rod are driven to move, the horizontal position of the electric telescopic rod can be adjusted, rapid adjustment can be conducted according to packaging boxes of different sizes, the device can conveniently adapt to the packaging boxes of different sizes and shapes, and the flexibility of a production line is improved.

This utility model relates to an armrest and seat, including a fixed base and an armrest body connected to the fixed base via a rotation angle limiting mechanism. The rotation angle limiting mechanism includes a through hole on the armrest body, a shaft portion inserted into the through hole on the fixed base, and an axial limiting structure between the shaft portion and the through hole to prevent axial movement of the armrest body relative to the shaft portion. The axial limiting structure includes a fastener, at least a portion, and a remaining portion. The at least portion conforms to the outer periphery of one end of the through hole, and the remaining portion conforms to the outer periphery of the other end of the through hole. The remaining portion acts as rotational damping. The fastener passes through the at least portion and is at least connected to the shaft portion. The advantages are: it provides stable axial clamping, significantly improving structural stability and reliability; simultaneously, the elastic damping element ensures that the armrest body can remain stably stationary at any angle, overcoming the defects of armrest loosening and damping failure in the prior art.

The invention discloses a robot capable of cleaning a wall surface and a top surface, and relates to the technical field of cleaning robots. The movable adsorption mechanism is provided with a bottom adsorption opening and a walking wheel assembly. The dust collection mechanism comprises a rotating disc base, a rotating driver, a swing block, a swing driver, a dust collection driver and a dust collection rod assembly. The turntable base is rotationally arranged at the top of the movable adsorption mechanism around a first axis; the swinging block is rotationally arranged in a swinging groove in the turntable base around a second axis; the lower end of the dust collection rod assembly is fixedly arranged on the swing block, and a suction head capable of rotating around a point is arranged at the tail end of the dust collection rod assembly. The dust collection driver is arranged in the movable adsorption mechanism, the dust collection rod assembly is provided with a dust collection channel, a suction opening of the dust collection driver is connected and communicated with a lower end opening of the dust collection channel, and an upper end opening of the dust collection channel is communicated with the suction head. The wall surface and ceiling positions can be cleaned, the labor force is reduced, and the cleaning work efficiency is improved.

The utility model discloses a discharging mechanism of a shot blasting machine, which comprises an outer frame, the outer frame is rotatably connected to a rack, and a filter plate is slidably connected to the inner part of the outer frame; the rotating mechanism is arranged between the outer frame and the rack, a fixing plate is used for fixing the outer frame so that the outer frame can be kept stable in the rotating process, and the fixing plate is installed on the rack; and the upper motor is installed on the rack, and the output end of the upper motor is fixedly connected with the rotating shaft rod of the outer frame. According to the discharging mechanism of the shot blasting machine, the upper motor enables the outer frame and the filter plate to rotate, then the filter plate and the outer frame can rotate to the horizontal position and the inclined position, the filter plate at the horizontal position can enable objects to stably stay, then finished products of different specifications are completely separated, and the filter plate can also be in an inclined state; and the cam rotates to push the mounting rod, so that the mounting rod and the filter plate move up and down, and the filter plate vibrates up and down, so that the objects above the filter plate are fully separated.

The invention discloses a 10kV outdoor insulation high-voltage isolation switch and an operation method thereof. The 10kV outdoor insulation high-voltage isolation switch comprises at least one phase of contact unit, each phase of contact unit comprises a support, a moving contact assembly, a first static contact assembly, a second static contact assembly and a shell, the lower end of the support is arranged in the shell in a penetrating mode, a rotatable insulation main shaft is arranged at the lower end of the support in a penetrating mode, and a pull rod is arranged on the insulation main shaft. The insulating main shaft is sleeved with the moving contact assembly, the first static contact assembly and the second static contact assembly are arranged in the shell in a penetrating mode, the first static contact assembly and the second static contact assembly are arranged on the two sides of the insulating main shaft respectively, the first static contact assembly and the second static contact assembly are connected with the support, and the lower end of the shell is provided with a flexible insulating lower cover; wherein the pull rod can rotate to drive the insulating main shaft to rotate so as to drive the moving contact assembly to rotate, and the flexible insulating lower cover can retract or expand outwards. The operation method of the 10kV outdoor insulation high-voltage isolation switch is based on the 10kV outdoor insulation high-voltage isolation switch.

The utility model discloses a pluggable binary current lead copper section structure of a superconducting magnet, which comprises a sealed cylinder, a current lead rod and a conduction component, the sealed cylinder is fixedly arranged on the outer wall of superconducting magnet equipment, and the current lead rod can reciprocate along the axial direction of the current lead rod relative to the sealed cylinder. A combination part is arranged on the outer circumferential wall of the current lead rod, a limiting part is arranged on the inner circumferential wall of the sealing cylinder, it is ensured that the current lead rod can stably stay at the combination position, the conduction part is used for conducting electric energy transmitted by the current lead rod to a to-be-excited object, and after excitation is completed, the current lead rod is made to move to the separation position; therefore, the current lead rod is blocked as a conduction heat leakage channel between the room temperature and the superconducting magnet low-temperature environment (inner-layer chamber), the cooling effect of the superconducting magnet can stably reach the preset target operation temperature, and the superconducting magnet is always in a stable superconducting state.

The utility model relates to the technical field of measuring tools, and discloses a drawing measuring scale for engineering cost, which comprises a main scale, an outer surface of which is movably connected with an auxiliary scale. And the locking mechanism is arranged at the top end of the auxiliary ruler. According to the drawing measuring ruler for the engineering cost, the straight ruler and the protractor are integrated, in the engineering cost drawing measuring and drawing work, the measuring ruler can be directly used for completing angle measurement and straight line drawing, workers do not need to frequently switch tools, the operation procedures are greatly reduced, and the working efficiency is remarkably improved; time waste and measurement errors caused by tool switching are avoided, the data basis of engineering cost calculation is accurately guaranteed, due to the design of the locking mechanism, it can be guaranteed that the auxiliary ruler stably stays at the required angle position during rotation, angle deviation caused by slight shaking is avoided, and the engineering cost is accurately calculated. The precision problem of a traditional measuring tool in the aspect of angle measurement is solved.

The utility model relates to the field of machinery, and discloses a detachable buffering upper rail structure which comprises a frame, two sliding rails are fixedly connected in the frame, two pulleys are arranged on the outer portions of the two sliding rails, connecting columns are rotationally connected between the opposite sides of the two pulleys, a connecting block is fixedly connected between the two connecting columns, and the connecting block is fixedly connected with the sliding rails. A movable plate is rotatably connected to one end of the frame, two spring shells are fixedly connected to the interior of the movable plate, first sliding columns are slidably connected to the interiors of the spring shells, first limiting columns are fixedly connected to the inner ends of the first sliding columns, and first springs are fixedly connected to the sides, close to the first sliding columns, of the first limiting columns. According to the utility model, through the structures such as the movable plate, the limiting column I, the handle and the like, the internal pulley is detachable, the pulley can be detached for replacement or adjustment when being damaged or derailed, the whole device does not need to be replaced, and the cost and the maintenance time are reduced.

According to the movable massage chair, in a walking mode, the output end of an electric push rod extends out to drive a sliding frame to move towards the ground until the sliding frame abuts against the ground, meanwhile, a rolling wheel device is separated from the ground, at the moment, a base frame is in a parking mode, and all functions of the massage chair are normally used; in the parking mode, after the electric push rod stretches out for a certain distance, the first pushing part abuts against the clamping head, so that the clamping jaw part is pushed to rotate to be separated from the inserting groove till the clamping jaw part is buckled to the clamping hook, and at the moment, the electric push rod retracts to drive the sliding frame to ascend to enable the base frame to descend till the rolling wheel device abuts against the ground and the sliding frame is separated from the ground. The base frame is in a walking mode. Therefore, the base is switched back and forth between the parking mode and the walking mode based on stretching and retracting of the electric push rod, the carrying efficiency is improved, and potential personal injury caused by manual carrying is eliminated.