217results about How to "Guaranteed coincidence" patented technology

The invention discloses an automatic processing device for diesel generator processing and a processing method, an intermittent rotating seat is rotatably mounted above a base, a composition jig is placed above the intermittent rotating seat, the composition jig is located between an inner supporting plate and an outer pressing plate, a plurality of stator cores are placed above the composition jig in an overlapping manner, and the stator cores are located between the inner supporting plate and the outer pressing plate. The inner side and the outer side of the stator core abut against the inner supporting plate and the outer pressing plate correspondingly, a lifting base is rotationally installed at the bottom end of a push rod of the hydraulic cylinder, a pressure maintaining plate is arranged below the lifting base, and two welding mechanisms are arranged on the upper portion of the base in a bilateral symmetry mode. The intermittent rotating seat is provided with the pressure maintaining mechanism, the stator iron core is stacked between the inner supporting plate and the outer pressing plate in the pressure maintaining mechanism, the stator iron core can be supported and positioned, the welding precision is improved, the inner supporting plate and the outer pressing plate can be far away from each other, the built-in space is large, and the stator iron core can be conveniently placed and taken out.

The invention belongs to the technical field of equipment special for assembling inductors, and particularly provides an integrated sensor and a coil and a forming die thereof. The forming die comprises a static die, a movable die and a guide rod, and further comprises a positioning locking block detachably fixed to the static die, the positioning locking block is provided with a detachable connecting structure used for being detachably connected with an insulating hanging block on a coil, and the movable die is provided with a containing cavity matched with the positioning locking block to contain the positioning locking block. The fixing position of the positioning locking block and the static die meets the requirement that the coil can be coaxial with the insulating tube, and the middle section of the coil can coincide with the middle section of the insulating tube or has a set distance with the middle section of the insulating tube. And the coil is provided with an insulating hanging block which is detachably connected and matched with the forming die. The integrated sensor comprises the coil. The forming die is additionally provided with the positioning locking block which can be connected with the insulating hanging block on the coil to play a role in positioning the coil, so that the coil can be kept at set positions in the axial direction and the radial direction under the positioning action of the positioning locking block, and the product percent of pass is improved.

The present invention belongs to the field of shaft rod drilling, and in particular, relates to a shaft parts processing equipment, including a base, a first translation mechanism is provided at the upper front end of the base, a drilling unit is provided on the first translation mechanism, second translation mechanisms are provided at both the upper left and right ends of the base, the two second translation mechanisms are commonly connected to a U-shaped mounting frame, a top pressing mechanism is provided at the horizontal section of the mounting frame, a positioning mechanism for positioning the shaft rod is commonly provided at the two vertical sections of the mounting frame, a support platform for fixing the shaft rod in cooperation with the top pressing mechanism is provided at the upper part of the base, and an extension plate with a discharge hole is provided on one side of the support platform. The positioning mechanism includes a first U-shaped connecting plate, and the two ends of the first connecting plate are respectively fixedly connected to the two vertical sections of the mounting frame. The present invention can reduce the difficulty of operating the shaft rod when loading and unloading, ensure the drilling quality, and can be suitable for batch and efficient drilling processing.

The utility model discloses an auxiliary assembling device for a propeller speed regulator counterweight assembly, which relates to the technical field of speed regulator mounting tools and comprises a positioning pin, a base, a clamping assembly and a compression bolt. The positioning pin is used for being arranged in the mounting holes of the counterweight arm and the two rollers in a penetrating manner to form a pre-mounting piece; a first connecting hole and a first limiting surface are arranged on the base, and a penetrating through hole is formed in the first limiting surface; a second connecting hole is formed in one end of the clamping assembly, and a clamping groove is formed in the other end of the clamping assembly; the compression bolt is in threaded connection in the first connecting hole through the second connecting hole; the end, provided with the clamping groove, of the clamping assembly can rotate to the position above the first limiting face. A gap between the first limiting face and the end, provided with the clamping groove, of the clamping assembly is used for containing a pre-installation piece. The axis of the clamping groove can be coaxial with the axis of the positioning pin and the axis of the penetrating hole. Time and labor are saved, and installation work efficiency is improved.

The invention belongs to the technical field of gear shaft machining, and provides a gear shaft grinding device and method.The device comprises a base, four sets of parallel and symmetrically-distributed supporting rods are rotationally installed on the base through side plates, and a plurality of sets of supporting rollers distributed at intervals are fixedly installed on the supporting rods; a lifting block located at one end of the supporting rod is arranged on the side plate, a first transverse plate is installed on the lifting block in a sliding mode, and a plurality of sets of first positioning rolling wheels are rotatably installed on the first transverse plate. Compared with the prior art, the device has the following beneficial effects that the gear shaft is supported from the lower portion of the gear shaft through the supporting roller, the position of the upper surface of the gear shaft is positioned through the lifting vertical plate and the second positioning roller, and therefore the axis position of the gear shaft is determined, and it is guaranteed that the axis of the gear shaft coincides with the rotating axis of the pressing plate; jumping of the gear shaft during polishing rotation is avoided, and the stability of the gear shaft during rotation is guaranteed.

The invention discloses an inner hole grinding clamp which is used for clamping a plunger sleeve in a plunger sleeve inner hole grinding process or a bypass valve sleeve middle hole grinding process and comprises a base, a base positioning mandrel, a positioning plate, a lining, a flange plate positioning mandrel, a pressing assembly, a flange plate and a balancing weight. The lining is assembled in a center hole of the positioning plate in an interference mode, and the flange plate positioning mandrel is fixedly connected to the middle of the flange plate; the lower part of the base positioning mandrel is fixedly connected with the base; when the positioning plate is placed on the base and matched with the pressing assembly to clamp the plunger sleeve, the middle of the base positioning mandrel is in clearance fit with the lining, and the upper portion of the base positioning mandrel is in clearance fit with an inner hole of the plunger sleeve or in clearance fit with a middle hole of the bypass valve sleeve. When the positioning plate which is matched with the pressing assembly to clamp the plunger sleeve is fixedly connected to the flange plate, the upper portion of the flange plate positioning mandrel is in clearance fit with the lining. By adopting the device, the problem that the special-shaped irregular parts need to be aligned when being ground on the internal grinding machine for multiple times can be solved, and the device is quick to clamp and disassemble.

The invention relates to the technical field of building construction, in particular to a bridge pile foundation steel casing positioning device which comprises a bottom plate and a sleeve, a side plate is fixedly mounted at the upper end of the bottom plate, an arc-shaped push plate is mounted at the inner end of the side plate through a hydraulic cylinder, the sleeve is square, and square tubes are mounted on the four sides of the outer end of the sleeve through connecting parts. The left side and the right side of the lower end of each square tube are each fixedly provided with a side plate, the lower end of each side plate is slidably connected with a limiting plate, the prism is installed among the four clamping blocks, the center position of the steel casing is actually measured, and it is guaranteed that the center of the prism coincides with the center of the steel casing; the device can track and measure the center coordinate value of the steel casing represented by the prism in real time according to the total station, compare the center coordinate value with the center design coordinate of the pile foundation to calculate the deviation value, and adjust the position of the steel casing according to the deviation value so as to finish the accurate positioning of the steel casing, and has the advantages of simple structure, simplicity and convenience in operation, stability, reliability, low manufacturing cost, high measurement speed, accurate measurement result and the like.

The utility model discloses an automatic clamping device for a disc-shaped cutter. The automatic clamping device comprises a table top, a positioning pull rod, a central lantern ring, a positioning pin, an elastic strip, a clamping shell, a clamping seat, a magnetic attraction device and a linear driving device. In the material waiting state, the linear driving device pushes the positioning pull rod to move forwards, so that the positioning pin retracts into the open groove of the clamping shell, due to the fact that large dimensional tolerance exists between the inner hole of the disc-shaped cutter and the outer wall of the clamping shell, positioning taking and placing of the mechanical arm can be met, and after the mechanical arm places the disc-shaped cutter, the linear driving device pulls the positioning pull rod to move backwards. The conical head pushes all the positioning pins to be exposed out of the open grooves at the same time to abut against the inner hole of the disc-shaped cutter, and the effect of positioning the center of the inner hole of the disc-shaped cutter is achieved. And meanwhile, under the magnetic attraction action of the magnetic attraction device, the disc-shaped cutter is tightly attached to the front end face of the clamping base, it is effectively guaranteed that the axis of the disc-shaped cutter coincides with the axis of the clamping device, and the clamping precision is effectively improved.

The utility model provides a plywood pressing device which comprises a machine frame, a placing table used for placing plates is arranged on the machine frame, and a pressing assembly used for gluing the plates placed on the placing table is arranged above the placing table and located on the machine frame. A plurality of elastic supporting assemblies used for supporting and limiting the pressing assembly are evenly distributed on the left side and the right side of the containing table. When the press-fit assembly conducts press-fit operation on plates, upward elastic supporting operation on the press-fit assembly is achieved through the elastic supporting assembly, plywood breakage caused by too large pressure in the press-fit process is avoided, unnecessary plate loss is avoided, the rejection rate is reduced, the press-fit efficiency is improved, and operation is simpler and more convenient.

The invention relates to the technical field of superconducting magnets, and discloses a high-reliability and low-heat-leakage propeller magnet system which comprises a Dewar, a coil assembly and a plurality of sets of heat insulation supporting structures, the coil assembly is arranged in the Dewar and connected with the Dewar through the heat insulation supporting structures, the coil assembly comprises a coil framework, and the coil framework is arranged in the Dewar and connected with the Dewar through the heat insulation supporting structures. The coil body is wound on the surface of the coil framework, the heat insulation supporting structure comprises a hot ring, a cold ring and a pull rod, the two ends of the pull rod are connected with the hot ring and the cold ring respectively, the hot ring is connected with the Dewar, and the cold ring is connected with the coil framework. Through the integrally designed heat insulation supporting structure, the number of parts of the magnet structure is remarkably reduced, the supporting stability is improved, it is guaranteed that the center line of a magnetic field coincides with the center line of plume of the propeller, and heat leakage of the magnet is further reduced.

The invention discloses a self-adaptive track sanding device and method for a complex curved surface. The device comprises a flange seat, a universal cross arranged at the front end of the flange seat, a motor body arranged in the universal cross, a brake ring and a polishing disc, wherein the brake ring and the polishing disc are arranged at the output end of the motor body; the universal cross is of a circular ring structure and is rotationally connected with the front end of the flange base through a first pin shaft, the upper portion of the motor body penetrates through the universal cross, and the motor body and the universal cross are rotationally connected through a second pin shaft. Connecting lines respectively formed by the first pin shaft and the second pin shaft are crossed, and the motor body realizes two-degree-of-freedom rotation through the first pin shaft and the second pin shaft. The motor body rotates through the universal cross to adjust the binding face between the grinding disc and the to-be-ground curved surface to achieve self-adaption to the to-be-ground curved surface, it can be guaranteed that the normal of the grinding disc coincides with the normal of the curved surface without precisely adjusting the posture and the positioning precision of a robot, and therefore the good grinding effect is obtained.

The invention relates to the technical field of methane telemetering, and particularly provides a methane telemetering system which comprises a DFB laser, a visible light laser, a dichroic mirror, a reflector, a Cassegrain telescope system, a sensor and a data acquisition card, infrared band light and visible light are combined through the dichroic mirror, the combined light is emitted to measured gas through the reflector, and the measured gas is transmitted to the sensor through the Cassegrain telescope system. The combined light passes through the detected gas and then irradiates on a reflecting surface, part of echo reflected light passes through the detected gas again and then enters the Cassegrain telescope system, and after being converged by the Cassegrain telescope system, the sensor acquires an optical signal and converts the optical signal into an analog electric signal; and the analog electric signal is converted into a digital electric signal through the data acquisition card. Visible light is used for assisting in observing the scanning position of infrared band light, the defect that human eyes cannot directly observe the detection position in the methane laser telemetering process is overcome, the light receiving caliber is increased, and the detection signal quality is improved.

The present invention discloses a butt welding positioning tool and positioning method for two semi-cylindrical shells, which solves the problem of how to accurately butt and position the two semi-cylindrical shells to facilitate the smooth welding of the inner weld. A left roller pair bracket (2) and a right roller pair bracket (4) are respectively arranged on the bottom plate (1) of the positioning tool, the central axis of the left roller pair (3) and the central axis of the right roller pair (5) are on the same straight line, the left semi-cylindrical shell (6) is top-connected to the left roller pair (3), and the right semi-cylindrical shell (7) is top-connected to the right roller pair (5), a butt welding inner weld seam (8) is arranged between the left semi-cylindrical shell (6) and the right semi-cylindrical shell (7), a left fixed vertical plate bracket (9) is arranged on the left side of the left semi-cylindrical shell (6), and a right movable vertical plate bracket (10) is arranged on the right side of the right semi-cylindrical shell (7). Accurate butt welding and positioning of the two semi-cylindrical shells is achieved.

The invention discloses an auxiliary tool, device and method for three-coordinate detection of an aero-engine diffuser, and belongs to the field of aero-engine detection.The auxiliary tool comprises a bottom plate, a tool positioning unit used for fixing the position of the bottom plate, a diffuser center shaft positioning unit, a diffuser axial locking unit and a datum plane construction unit; the diffuser center axis positioning unit can coincide the diffuser with the center axis of the bottom plate so as to achieve initial positioning of the diffuser, aiming at the problem that the diffuser is poor in appearance consistency, the tool adopts the reference plane construction unit, the reference plane construction unit is arranged at the front edge of a blade and is tangent to the blade, flexible positioning of the diffuser can be achieved, and the appearance consistency of the diffuser is improved. The problem that the positioning block is not flatly cushioned due to the fact that the state of the casting diffuser part is unstable is solved; the diffuser is locked after being positioned through the diffuser axial locking unit, so that the accuracy and the efficiency of three-coordinate detection are ensured; the tool is simple in structure and principle, and the detection precision and the detection efficiency are improved.

A rotor part drilling inclined hole clamp, comprising a base plate, which is provided with a support plate matched with the bottom structure of the rotor part; further comprising a expansion sleeve clamp assembly coaxially penetrating into the rotor part and connecting the rotor part with the base plate, the support plate leaving a space for the expansion sleeve clamp assembly to pass through; further comprising a plurality of clamping assemblies clamping the rotor part with the base plate along the circumference of the rotor part; further comprising a positioning assembly fixed on the base plate and in contact with the blade limiting any blade window, the support plate leaving a space for the positioning assembly to pass through. Through the reasonable setting of the part structure, the whole clamping process is convenient and fast, the inclined hole position is quickly positioned, the processing time and adjustment difficulty are greatly reduced, and the cost is reduced and the benefit is increased.

The present invention proposes a bolt Rockwell hardness test fixture, comprising a locking mechanism, a limiting mechanism, a base and a screw. The limiting mechanism is used to place the bolt to be tested; the locking mechanism is used to fix the limiting mechanism on the base; the base is used to place the entire fixture on the hardness tester screw, and ensure that the center line of the device coincides with the center line of the hardness tester; the screw is buckled on the base, and is used to tighten the entire fixture on the hardness tester screw through threads. When the fixture is used for hardness testing, the detection surface of the bolt head is perpendicular to the hardness tester pressure head, which can ensure that the bolt placement method complies with national standards. The device is easy and reliable to use, has a simple and compact structure, and can improve the detection quality and detection efficiency of smaller-sized bolts.

The utility model relates to the technical field of paint film testing, in particular to a device for testing the stone impact resistance of a paint film, which comprises a blanking pipe and a bearing platform positioned below the blanking pipe, the blanking pipe is used for directionally putting stones for testing; the bearing platform comprises a mounting support and a base plate, one end of the base plate is hinged to the mounting support, and the other end of the base plate is connected with the mounting support through a supporting piece. The length of the supporting piece or the connecting position of the supporting piece and the mounting support is adjustable, and the supporting piece is used for simulating stone hit conditions at different angles; the substrate is provided with a U-shaped card slot used for placing a test card. Through the device, the problem that an existing testing device is complex in structure can be effectively solved, and testing is more stable.

The application discloses a large-diameter super-long aluminum alloy tunnel pipe assembling and butt welding system and method, relates to the welding technical field, and can solve the problem that the existing welding method cannot ensure the welding efficiency and quality of the large-diameter super-long aluminum alloy tunnel pipe. The application embodiment discloses a large-diameter super-long aluminum alloy tunnel pipe assembling and butt welding method, which is used for welding a plurality of pipe fittings and two flanges into a whole pipe, and comprises the following steps: S1, simultaneously sleeving the end portions of two pipe fittings to be welded on the same inner support tool, and checking the edge deviation and coaxiality; S2, if the edge deviation and coaxiality meet the requirements, welding the pipe fittings to be welded on the inner support tool; and S3, repeating the single welding process composed of S1 and S2 n times, and performing at least one length correction before the whole pipe is welded.

The present invention relates to the field of welding technology, and in particular to an alignment welding device suitable for steel pipes and flanges of different diameters, comprising a base, a mounting frame fixedly mounted on the upper surface of the base, a welding gun assembly fixedly mounted on the upper end of the mounting frame, a slider fixedly mounted inside the base via a moving mechanism, the slider being slidably arranged on the upper surface of the base, a first clamping mechanism fixedly mounted on the upper end of the slider via a supporting mechanism, a driving shaft rotatably mounted inside the mounting frame, a second clamping mechanism fixedly mounted on the end of the driving shaft, the device can position steel pipes and flanges of different diameters, facilitates welding, and is worthy of promotion.

The invention discloses a front-mounted eccentric double-tube guided drilling and injection machine, comprising a guide section, the guide section comprising an inner tube and an outer tube, one end of the inner tube being mounted on one end of the outer tube through a self-aligning bearing, and the other end being connected to a drum-shaped gear coupling, and the inner tube being eccentrically suspended in the outer tube through the self-aligning bearing and the drum-shaped gear coupling. The invention is that a double-layer drill pipe is driven by a double-power head drilling rig to rotate in opposite directions, and the inner drill pipe rotates continuously whether drilling a straight hole or directional deflection; and the outer drill pipe is directional deflection when not rotating, and acts as a casing when drilling a straight hole. The machine combines the structure of guided drilling and rotary spraying to realize the dual functions of guided drilling and back-dragging rotary spraying. The inner tube is connected to the inner shaft through a drum-shaped gear coupling to ensure that the axes of the inner tube and the outer tube at the rear end of the guide section coincide, and the inner and outer drill pipes are conveniently connected. The drum-shaped gear coupling can not only transmit drilling pressure and torque, but also has sealing properties to ensure that the fluid in the center hole of the inner tube does not leak into the annular space between the inner tube and the outer tube.

The present application relates to four-roll spindle multi-wire cutting technology and equipment field, specifically relates to a kind of for four-roll spindle multi-wire cutting machine auxiliary winding device and control method.Wherein device includes rack platform, 2n regular distribution and parallel guide rails are provided on the rack platform along y direction, n>1;Rack platform is installed with the lock sliding block of normally closed type matched with the one end of guide rail, rack platform is installed with the single-shaft moving platform for driving guide rail movement along x direction by motor control and being connected with the other end of guide rail, the guide rail is uniformly distributed with multiple variable shaft angle roller assembly.This device and control method can make the diamond wire acting on the surface of workpiece completely perpendicular to the axis of four main roller, ensure that the path of the diamond wire is basically unchanged when reciprocating, thereby reducing the wear between main roller axis slot and diamond wire, improving the service life of diamond wire, improving wire cutting quality, reducing cutting loss.

The utility model provides a sheet part punch tapping indexing device, including rotation indexing mechanism, rotation indexing mechanism includes the fixed baseplate of being fixedly connected with drill press concentrically, rotation indexing mechanism still includes rotation baseplate, rotation baseplate concentric indexing rotation relative fixed baseplate, and rotation baseplate drives rotation through the hand wheel drive mechanism of installation in vertical side surface, hand wheel drive mechanism drives rotation baseplate rotation through right angle bevel gear transmission, rotation baseplate concentric fixedly links nut pressure mechanism and drives nut pressure mechanism concentric rotation, and nut pressure mechanism includes support frame, and support frame realizes sheet part synchronous rotation through the concentric pressure fixed installation sheet part of nut and elastic pad. The utility model reduces sheet part punch tapping waste rate to 2%, compact structure, convenient operation, guaranteeing accuracy reduces processing cost at the same time.

This utility model relates to a prefabricated staircase positioning device, belonging to the field of prefabricated staircase production technology. Specifically, it is a positioning device for prefabricated staircase embedded parts, including a mold base plate, a fixing component, a positioning component, and a length adjustment component. This utility model ensures accurate positioning while maintaining mold stability, solving the problems of existing patented positioning plates and outer plates being rigid structures that are difficult to adapt to staircase embedded parts of different specifications, rigid positioning devices that may cause misalignment of embedded parts due to cumulative errors, and the use of a large amount of steel plates and angle steel that significantly increases the cost per unit.

The utility model relates to the technical field of coaxiality detection, in particular to a portable door hinge coaxiality detection device, which comprises a base and adjusting seats symmetrically distributed on two sides of the base, positioning mechanisms are arranged on the base and the two groups of adjusting seats, a laser transmitter is fixedly mounted on the right adjusting seat, and a laser receiver is fixedly mounted on the right adjusting seat. A photosensitive sensor is fixedly installed on the left adjusting seat, and an adjusting mechanism used for adjusting the distance between the two adjusting seats is arranged on the base. The positioning mechanism comprises a mounting seat which is fixedly mounted on the base and the two groups of adjusting seats, a turntable is arranged in the mounting seat, and three groups of annularly distributed clamping rods are arranged in the mounting seat. The three groups of clamping rods which act synchronously in the mounting base are matched with the annular gear transmission system, hinge shaft cores with different diameters can be clamped quickly, it is ensured that the detection reference coincides with the actual axis of a hinge, non-contact high-precision detection is achieved through cooperation of the laser transmitter and the photosensitive sensor, and the detection precision is improved. Measurement errors caused by contact pressure of a traditional mechanical probe are avoided.

A kind of end face precision grinding rotary clamping positioning device suitable for cylindrical spring, it is specially used in the equipment of cylindrical spring end face precision grinding, including spring clamping positioning piece, cylindrical spring rotary clamping piece, center height automatic adjusting piece, installation rack, spring clamping positioning device, for spring clamping fixation to positioning V-shaped block;Cylindrical spring rotary clamping device, for realizing that spring end face grinding machine tool can rotate cylindrical spring in grinding process;Center height automatic adjusting device, for realizing automatic adjustment of cylindrical spring rotary clamping device center height;Installation rack, for installing spring clamping positioning tool, cylindrical spring rotary clamping device and center height automatic adjusting device, to help spring to be placed to spring positioning tool for the accurate positioning of spring, firmly support each device.

The utility model discloses a self-balancing heat tracing cable winding mechanism, which comprises a clamping walking mechanism and a cable winding mechanism, the clamping walking mechanism comprises an inner cylinder sleeved on the periphery of a jacket pipe, and two ends of the inner cylinder are respectively and fixedly connected with an end plate vertical to the axis of the inner cylinder; a rotating disc parallel to the end plate on one side is arranged on the outer side of the end plate on one side, the outer edge of the rotating disc is embedded in a wheel groove of each limiting wheel, and the root of a wheel shaft of each limiting wheel is fixed to the outer end face of the corresponding end plate; an inner gear ring is arranged on the inner edge of the rotating disc, the inner gear ring is meshed with a winding driving gear, the winding driving gear is fixed to the output shaft end of a winding servo motor, and the winding servo motor is fixed to an end plate; a rotating guide rod is fixed to the outer end face of the rotating disc, and a rotating guide wheel is installed at the free end of the rotating guide rod. According to the mechanism, the heat tracing cable can be automatically wound on the periphery of the jacket pipe, the labor intensity is greatly reduced, the construction cost is reduced, and the tool is automatically kept in a balanced state in the operation process.

The utility model belongs to the technical field of clamps, and particularly relates to a side plate self-centering clamp which comprises a base, an X-direction centering adjusting mechanism, an X-direction clamping mechanism and a Y-direction clamping mechanism, and the X-direction centering adjusting mechanism comprises two movable supporting pieces and a driving assembly used for driving the two movable supporting pieces to synchronously and oppositely move in the length X direction. The X-direction clamping mechanism is used for clamping in the length X direction, the Y-direction clamping mechanism is used for clamping in the width Y direction, and the two movable supporting pieces are provided with a clamping datum plane A and a clamping datum plane B which are symmetrically arranged with the X-direction centering adjusting mechanism as the center respectively. By the adoption of the structure, when the side plates are remodeled, the side plates can be clamped in the center in the X direction, the center in the X direction can be kept at the same position all the time, the conditions that remodeling is slow and efficiency is low when the side plates with different lengths are clamped are avoided, and universality is achieved.

The utility model discloses an upper leg type test auxiliary device, which is used for a pedestrian protection upper leg type test and comprises a device main body, and the device main body comprises an upper leg type rigid framework, a fixed support and a laser. The fixed bracket is movably arranged on the upper leg type rigid framework; the laser is arranged on the fixing support, and the center of a laser beam emitted by the laser is used for simulating the center of the upper leg shape. Wherein in the pedestrian protection upper leg type test, the laser device is suitable for emitting laser to the front end of the vehicle so as to assist in test scribing and determination of the position of a test point. According to the upper leg shape test auxiliary device of the embodiment of the utility model, the scribing accuracy can be improved, and the overlap ratio of the center of the upper leg shape and the test point position is ensured, so that the accuracy and the convenience of the pedestrian protection upper leg shape test are improved.