47 results about "Lateral positioned" patented technology

The utility model discloses a bar positioning die and relates to the field of bar machining, the bar positioning die comprises a supporting frame and a bar, a table top is arranged on the supporting frame, a transverse positioning mechanism and a longitudinal positioning mechanism are installed on the table top, and the bar penetrates through the inner side of the transverse positioning mechanism and the inner side of the longitudinal positioning mechanism. The transverse positioning mechanism can limit the two sides of the bar, and the longitudinal positioning mechanism can limit the upper portion and the lower portion of the bar. An adjusting plate located on the upper portion is moved downwards, so that the inner wall of a groove in the adjusting plate on the upper portion is attached to the upper portion of a bar, a second friction pad makes contact with the bar, the friction force of the contact part is increased, the lower portion of the bar is located on the adjusting plate on the lower portion, and then a pushing nut is rotated to move downwards step by step; the upper adjusting plate and the lower adjusting plate are attached to the surface of the upper adjusting plate, the upper adjusting plate is limited, and the bars are limited through the upper adjusting plate and the lower adjusting plate, so that the bars can be prevented from moving longitudinally during machining.

The present invention provides an adjustment slide and welding equipment, which relate to the field of welding technology. The adjustment slide includes a fixed plate, a longitudinal adjustment plate, a transverse adjustment plate, a longitudinal slide rail, a transverse slide rail, a driving mechanism and a positioning mechanism. The lower surface of the longitudinal adjustment plate is provided with a first guide rail groove, the longitudinal slide rail is arranged in the first guide rail groove, the upper surface of the longitudinal adjustment plate is provided with a second guide rail groove, the transverse slide rail is arranged in the second guide rail groove, the overall thickness of the adjustment slide is equal to the sum of the thicknesses of the fixed plate, the longitudinal adjustment plate and the transverse adjustment plate, the first driving member is provided on the side wall of the longitudinal adjustment plate, the first driving member is used to drive the longitudinal adjustment plate to move longitudinally, the second driving member is used to drive the transverse adjustment plate to move transversely, the longitudinal positioning member is used to limit the movement of the longitudinal adjustment plate, and the transverse positioning member is used to limit the movement of the transverse adjustment plate. Compared with the prior art, the adjustment slide of the present invention has the advantages of simple structure and small space occupation.

The utility model discloses a cutting machine and a cutting piece produced by the cutting machine, the cutting machine comprises a rack, the rack is provided with a cutting device, the rack is provided with cutting tables at the front side and the rear side of the cutting device, and each cutting table is provided with a first transverse positioning surface and a first vertical positioning surface; the feeding table is movably connected to the rack in the front-back direction, the feeding table is located on the rear sides of all the cutting tables, the feeding table is provided with a second transverse positioning face and a second vertical positioning face, and the feeding table is provided with a second longitudinal clamp and a second transverse clamp; the feeding table is provided with a longitudinal moving unit and a transverse moving unit, the longitudinal moving unit drives the feeding table to move in the up-down direction, so that the second transverse positioning face has a moving path flush with the first transverse positioning face, and the transverse moving unit drives the feeding table to move in the left-right direction. And the second vertical positioning surface is provided with a moving path which is flush with the first vertical positioning surface. According to the slitting device, materials can be prevented from being scratched in the slitting process, the smoothness of a cutting piece can be kept, and the cutting precision of the cutting piece is improved.

The welding tool for the CHC motor shell comprises a first horizontal positioning plate, a positioning assembly and a fourth horizontal positioning plate, and a positioning notch groove is formed in the right side edge of the first horizontal positioning plate; the positioning assembly comprises a second horizontal positioning plate, a third horizontal positioning plate, a connecting plate, a first transverse vertical plate and a second transverse vertical plate, the lower side face of the second horizontal positioning plate is provided with a second concave arc face structure, the rear side of the second horizontal positioning plate is provided with a transverse positioning groove hole, and the front end face of the second horizontal positioning plate forms a positioning face. The left end of the second transverse vertical plate is fixedly arranged at the rear end of the right side face of the second horizontal positioning plate, the right end of the second transverse vertical plate is fixedly connected with the left end of the first transverse vertical plate, and the rear end face of the first transverse vertical plate and the rear end face of the second transverse vertical plate are flush with the rear end face of the second horizontal positioning plate. The rear end of a third horizontal positioning plate is fixedly arranged on the upper end face of the first transverse vertical plate, the front end of the third horizontal positioning plate is fixedly connected with the front side of the right end of a second horizontal positioning plate through a connecting plate, the third horizontal positioning plate is provided with a limiting hole corresponding to a through hole in the top of the bending piece, a limiting pin is inserted into the limiting hole, and a U-shaped positioning groove is formed in the upper end of the second transverse vertical plate. A supporting arm extending leftwards is arranged on the rear side of the left end face of the fourth horizontal positioning plate, and an L-shaped notch groove is defined by the front side face of the supporting arm and the horizontal positioning plate. According to the welding tool, the appearance accuracy of a CHC motor shell finished product is improved, the welding qualification requirement is met, and the percent of pass of the CHC motor shell finished product is remarkably improved; and the welding operation of the CHC motor shell can be conveniently divided into multiple procedures, and the overall welding efficiency of the CHC motor shell can be improved.

The invention provides a laser welding device facilitating part positioning and relates to the technical field of part positioning and welding. A base is fixedly mounted in the middle of the top of the base, a guide frame is fixedly mounted in front of the top of the base, and a guide groove is formed in the middle of the top of the guide frame. A workpiece is positioned in the front-and-back direction through the air cylinder B and the push plate, transverse positioning is achieved through the air cylinder D and the clamping plate, meanwhile, a three-dimensional positioning system is formed in cooperation with the lateral frame, the screw rod piece and an inclined lateral positioning structure of the lateral clamp, and the fixing requirements of parts at different angles can be met. The problems that most welding assemblies of an existing device are fixed or can only achieve single-dimension adjustment such as up-down or left-right adjustment, position adaptation in the front-back, left-right and up-down three-dimensional space cannot be rapidly and accurately completed according to different part welding stations, the welding efficiency is low, and welding defects are likely to be caused by adjustment errors are solved.

The utility model discloses a stamping fixing frame for an automobile die, which comprises a mounting frame, a transverse positioning device is fixedly connected onto the lower wall of the mounting frame in the transverse direction, and a fixing device capable of fixing a stamping part is fixedly connected onto the transverse positioning device. A longitudinal positioning device capable of adjusting the lifting of the positioning plate is longitudinally arranged on the lower wall of the mounting frame, and the stamping parts are positioned in four directions by arranging the transverse positioning device and the longitudinal positioning device, so that each stamping part can be accurately positioned at a fixed position; meanwhile, a second positioning plate on the longitudinal positioning device can ascend or descend in the Z-axis direction while moving in the Y-axis direction, so that the placement of the stamping part is avoided; and the fixing device is arranged on the transverse positioning device, so that the positioned stamping part can be fixed, and the stamping part is prevented from being bounced in the stamping process to cause deformation of the stamped part.

The utility model relates to a positioning structure for stone processing, including the positioning seat, the top of positioning seat is connected with horizontal positioning mechanism, the inside connection of positioning mechanism has longitudinal positioning mechanism, the top of positioning seat is connected with push material mechanism and round roller, first place stone in the top edge of positioning seat, then push stone, make one side of stone and push material mechanism close, stone drives round roller to rotate, has reduced partial friction, again uses horizontal positioning mechanism to position both sides of stone, finally uses longitudinal positioning mechanism to position the top of stone, after stone processing is completed, first uses longitudinal positioning mechanism to position the top of stone, then uses horizontal positioning mechanism to position both sides of stone, again uses push material mechanism and drives stone to move to the top edge of positioning seat, stone drives round roller to rotate, has reduced partial friction, finally uses both hands and holds stone both sides and carries out the unloading, improved positioning efficiency.

The present invention discloses a rapid positioning device for the in-situ casting formwork of the initial support of a tunnel, which includes an excavation bench, a slip form system, side brackets, and an upper bracket. The side brackets are symmetrically arranged on both sides of the upper bracket, and a slip form system is correspondingly arranged for each side bracket. The side brackets and the upper bracket are connected by a connecting piece, and the connecting piece is detachable. An upper support system and a lower support system for the side brackets are arranged on the excavation bench, and the upper support system and the lower support system for the side brackets are respectively connected to the side brackets; the lower support system for the side brackets is connected to the expansion and contraction system of the side brackets to realize the contraction and expansion of the side brackets; the upper support system for the side brackets is connected to the lateral positioning system to realize the lateral positioning of the slip form system; the upper bracket is supported by an upper bracket support system, and the upper bracket support system is connected to the top of the lifting bracket, and the upper bracket support system realizes lifting by using a lifting jack; the slip form system can slide along the arc-shaped support body composed of the side brackets and the upper bracket.

The application discloses a preoperative incision positioning device for spine minimally invasive surgery, which comprises a support, a transverse positioning assembly transversely and slidably connected to the support and a longitudinal positioning assembly longitudinally and slidably connected to the support, the transverse positioning assembly comprising a scribing plate, a connecting rod component and a screw rod, the scribing plate being arranged on the opposite side and being rotatably connected to the two ends of the connecting rod component, the connecting rod component being arranged in a rhombic shape, and the screw rod being arranged at the proximal end of the rhombic connecting rod in a bidirectional thread, the proximal end of the rhombic connecting rod being driven to move towards the center, and the distal end of the rhombic connecting rod being driven to move away from the center, the longitudinal positioning assembly being provided with disc bodies capable of being vacuum adsorbed at the two ends and being provided with a gear set at the middle for driving the support in the same direction. The scribing plate is transversely driven by the screw rod and the connecting rod component, the screw thread drive itself has a certain damping, the movement and fixation are facilitated, the screw thread drive is continuously driven, and thus the scribing plate is conveniently transversely finely adjusted and positioned.

An optimized presentation of workpiece blanks (2) on a workpiece tray of a workpiece magazine in front of a mechanical processing device is provided, with workpiece blanks (2) distributed manually and securely on a carrier plate (1) quickly, easily and very precisely and with high repeatability with maximum functional reliability, which is achieved by applying a method for computer-aided tray loading of the workpiece tray and by providing the surface of the carrier plate (1) with a plurality of openings (3) arranged in regular rows and columns of equal spacing and size, as well as with a plurality of workpiece spacers (4-7).which are equipped with locking elements (9) extending downwards from their undersides (8) into openings (3) and which have upwardly directed support surfaces (10-13) for corner or edge partial support surfaces of the workpiece blanks (2) and vertically extending spacer blocks (31-34) or edge blocks (30) between them, which in turn have lateral positioning surfaces (14-20) for the workpiece blanks (2).

The utility model discloses a screw-free fast replacement fixing assembly which comprises a sleeve shell and a positioning rotating rod, the sleeve shell is hollow, an L-shaped groove formed by a vertical adjusting groove and a transverse positioning groove is formed in the side wall of the sleeve shell, and a penetrating hole is formed in the bottom face of the sleeve shell; a plurality of separated grippers extend downwards around the periphery of the through hole; a plurality of separated grippers extend downwards around the periphery of the through hole; the positioning rotating rod is arranged in the sleeve shell; a protruding stop block is arranged on the side wall of the positioning rotary rod and located in the L-shaped groove. When the stop block is located in the transverse positioning groove, the bottom of the positioning rotary rod penetrates through the penetrating hole to push and abut against the grabhooks, and a locking state is formed. When the stop block is located in the vertical adjusting groove, the bottom of the positioning rotary rod enters the sleeve shell, and the grabhook is in an unlocking state that the grabhook can be folded inwards under stress.

The utility model relates to the technical field of coal mining in coal mines, in particular to an adjustable assembling and positioning mechanism for a hydraulic support structural member. Comprising a reference shaft, a positioning shaft, a transverse positioning plate and a longitudinal positioning plate, the transverse positioning plate and the longitudinal positioning plate are perpendicular to each other and slidably connected, and one end of the longitudinal positioning plate can abut against the reference shaft and axially move along the reference shaft; one end of the transverse positioning plate can abut against the positioning shaft and move in the axial direction of the positioning shaft. Therefore, the positioning mechanism can be adjusted in the transverse direction, the longitudinal direction and the axial direction, products of different models can be better adapted, flexibility is high, meanwhile, tools of various sizes do not need to be produced, and the production cost of the tools is greatly reduced.

The utility model relates to the technical field of clamps suitable for overhauling and detecting special-shaped shaft parts, in particular to a clamp for detecting, overhauling or locally processing shafts and special-shaped parts, which comprises a base, a transverse positioning and clamping component and a longitudinal positioning and clamping component. The transverse positioning and clamping assembly comprises a transverse adjusting handle, a supporting plate, a contact block, a movable V-shaped block and a rear baffle, the longitudinal positioning and clamping assembly comprises a pair of in-frame V-shaped blocks, a vertical adjusting handle and a supporting frame, the transverse positioning and clamping assembly and the longitudinal positioning and clamping assembly are installed on the base, and a part is positioned and clamped through positioning of the V-shaped blocks and rotation of the lead screw adjusting handle. According to the scheme, a movable sliding block structure is adopted, and the universality and practicability are improved.

The utility model relates to the technical field of screws, in particular to a locking combined screw. According to the technical scheme, the screw comprises a screw rod, a nut is fixedly installed at one end of the screw rod, a cross-shaped groove is formed in the top end of the nut, a stop assembly is installed on the screw rod in a clamped mode, a transverse positioning column is fixedly installed on the outer side wall of the screw rod and connected with the stop assembly in a clamped mode, and a longitudinal positioning column is fixedly installed at the bottom of the nut. The longitudinal positioning column is connected with the stop assembly in a clamped mode. The screw rod and the locking assembly can be stably connected through the transverse positioning column, the nut and the locking assembly can be stably connected through the longitudinal positioning column, after the screw is screwed into a connecting piece, the locking assembly is fixed to the connecting piece, and the screw rod and the nut can be locked and positioned; and under the condition that the screw rod is not loosened, the nut can be prevented from being touched by external force to generate rotation, and the reliability of preventing the screw from loosening is effectively improved.

A device assembly structure includes left and right side panels and a device disposed between the left and right side panels. The left and right side panels have substantially vertical sidewalls and are provided with left and right supporting portions at their lower portions, respectively. Left and right bases are disposed between the left and right supporting portions, and the left and right bases are provided with positioning portions. The device includes a crossbar telescopic assembly capable of supporting and positioning the device and capable of laterally positioning and moving. The crossbar telescopic assembly includes at least a positioning member, and the positioning member is provided with a positioning mating portion. The device is longitudinally positioned and disassembled on the positioning portions of the left and right bases via the positioning mating portions of the positioning member. Through the improvements to the above structure, the present invention allows users to achieve convenient, quick, efficient, and flexible assembly and disassembly of the device, thereby enhancing its practicality.

The utility model discloses a batten drilling tool which comprises a lower positioning seat and an upper positioning seat, a first transverse positioning groove is formed in the upper surface of the lower positioning seat, and a first longitudinal positioning groove is formed in the upper surface of the lower positioning seat. According to the batten drilling tool, the lower positioning seat is fixed to the workbench of the drilling machine, then the upper positioning seat is fixed to the lifting sliding seat of the drilling machine, and due to the fact that a second mounting hole is of a long-strip-shaped structure, the position of the upper positioning seat can be adjusted, so that a second through hole and a first through hole are located on the same straight line; a workpiece needing to be drilled is placed in the first transverse positioning groove and the first longitudinal positioning groove, the lifting sliding base of the drilling machine is controlled to move downwards, the upper positioning base and the lower positioning base are attached, and therefore the workpiece is positioned, and a drill bit firstly penetrates through a second through hole and then drills the workpiece. And finally, a drill bit penetrates through the first through hole to complete drilling of the workpiece. The tool is simple in overall structure, convenient to install, good in positioning effect and high in practicability.

The invention relates to the technical field of caterpillar track machining, in particular to a large-tonnage caterpillar track self-adjusting positioning tool which comprises a placing mechanism, a transverse positioning mechanism, an axial positioning mechanism, a rolling mechanism and a rotating mechanism. The axial positioning mechanism can move in the direction of the containing plate to achieve axial positioning of the caterpillar track section, the transverse positioning mechanism can move in the direction of the containing plate to achieve transverse positioning, perpendicular to the axial direction, of the caterpillar track section, and both the axial positioning mechanism and the transverse positioning mechanism can automatically adjust the positioning distance when the caterpillar track section expands thermally. The transverse positioning mechanism, the axial positioning mechanism and the self-adjusting mechanism are matched with the rolling mechanism, so that the large-tonnage caterpillar track can be self-adjusted during heat treatment positioning so as to adapt to the problems of surface indentation and cracks caused by thermal expansion of the caterpillar track; and when a large-tonnage caterpillar track generates a large dislocation problem due to machining errors, external force or vibration and the like, the position of the caterpillar track is reset through the cooperation of the transverse positioning mechanism and the rolling mechanism.

The utility model discloses a clamping device of an expanding machine, which comprises clamping side plates arranged oppositely, and the clamping side plates are connected through a transverse positioning mechanism so as to provide transverse positioning for the nose end of an open coil; a longitudinal positioning mechanism is arranged on the inner wall of the clamping side plate, the longitudinal positioning mechanism is provided with a guide rod and clamping plates arranged at the two ends of the guide rod, and the clamping plates move in the same direction or in the opposite directions to longitudinally position, clamp and release the nose end of the open coil. Through cooperation of the transverse positioning mechanism and the longitudinal positioning mechanism, the nose end of the open coil is clamped in the transverse direction and the longitudinal direction at the same time, the problem that the open coil expanding machine cannot clamp and fix the coil is effectively solved, and expanding of the open coil is guaranteed.

The application discloses a multi-direction positioning device for cable connector assembly, comprising a rack, a moving table, a translation driving mechanism, a sliding plate, a first longitudinal driving mechanism, a multi-direction positioning piece, a first vertical driving mechanism, a transverse positioning piece, a second longitudinal driving mechanism, a longitudinal positioning piece, a third longitudinal driving mechanism, a vertical positioning piece and a second vertical driving mechanism; the translation driving mechanism drives the moving table to move horizontally; the first longitudinal driving mechanism drives the sliding plate to slide longitudinally; the first vertical driving mechanism drives the multi-direction positioning piece to move vertically; the multi-direction positioning piece is horizontally limited at both ends of the connector; the second longitudinal driving mechanism drives the transverse positioning piece to move longitudinally, and the transverse positioning piece limits the neck of the jig; the third longitudinal driving mechanism drives the longitudinal positioning piece to move longitudinally, and the longitudinal positioning piece limits the longitudinal movement of the connector together with the multi-direction positioning piece; and the second vertical driving mechanism drives the vertical positioning piece to move vertically, and the vertical positioning piece limits the vertical movement of the connector together with the multi-direction positioning piece.

The utility model relates to the technical field of plate machining, and discloses a plate grooving device which comprises a drill bit and a control assembly and further comprises a supporting frame, and the drill bit and the control assembly are symmetrically arranged on the two sides of the supporting frame; the two positioning frames are arranged above the supporting frame, the first driving assembly drives the two positioning frames to get close to each other, each positioning frame comprises a transverse positioning rod and a vertical positioning rod, the length direction of the transverse positioning rod is parallel to the length direction of the supporting frame, and the length direction of the vertical positioning rod is parallel to the length direction of the supporting frame. The vertical positioning rods are arranged on the transverse positioning rod in the vertical direction, and the multiple vertical positioning rods are arranged in the length direction of the transverse positioning rod at intervals. According to the invention, the precision of symmetrically slotting the two sides of the plate can be improved.

The utility model discloses an automatic tensioning wheel support positioning tool which comprises a first-order plane positioning workpiece and a second-order one-face two-pin positioning workpiece. The first-order plane positioning workpiece comprises a first-order bottom plate, a first-order transverse positioning clamp and a first-order longitudinal positioning clamp; the first-order transverse positioning clamp and the first-order longitudinal positioning clamp are arranged on the upper end face of the first-order bottom plate in a protruding mode respectively, and the first-order transverse positioning clamp and the first-order longitudinal positioning clamp are perpendicular to each other. The second-order one-face two-pin positioning workpiece comprises a second-order bottom plate, a second-order cylindrical pin and a second-order rhombic pin; the second-order cylindrical pin and the second-order rhombic pin are arranged on the upper end face of the second-order bottom plate in a protruding mode, and the connecting line of the second-order cylindrical pin and the second-order rhombic pin is perpendicular to the long axis of the rhombic pin; when the automatic tensioning wheel support is machined, the automatic tensioning wheel support can be rapidly and accurately positioned, and the accuracy of the automatic tensioning wheel support is guaranteed.

The utility model relates to steel mould support technical field especially relates to a steel mould support for dry canal construction. Its technical scheme includes: binding mechanism, including horizontal positioning strip and longitudinal positioning strip, the middle part of horizontal positioning strip is equipped with multiple inverted positioning notches of equidistance distribution, longitudinal reinforcement passes through from inverted positioning notch, the middle part of longitudinal positioning strip is equipped with multiple right -positioned positioning notches of equidistance distribution. The utility model positions horizontal reinforcement, longitudinal reinforcement through horizontal positioning strip, longitudinal positioning strip, establishes the position of every horizontal reinforcement and longitudinal reinforcement, makes the support of horizontal reinforcement and longitudinal reinforcement to support steel plate more even, rotates the screw head to rotate bolt, can adjust the distance between the positioning clamping plate of adjacent position, to adapt to the horizontal positioning strip and longitudinal positioning strip of different diameter, improve the clamping degree, avoid horizontal reinforcement and longitudinal reinforcement loose, improve construction accuracy and stability.

The application provides a laser welding device for conveniently positioning parts, relates to the technical field of part positioning and welding, and comprises a base, a bottom seat fixedly installed at the middle position of the top of the base, a guide frame fixedly installed at the front position of the top of the bottom seat, and a guide groove formed at the middle position of the top of the guide frame. The workpiece front-rear direction positioning is realized by a cylinder B and a push plate, the transverse positioning is realized by a cylinder D and a clamping plate, and meanwhile, a three-dimensional positioning system is formed by the oblique lateral positioning structure of the lateral frame, the screw piece and the lateral clamp, so that the fixing requirements of different angles of the parts can be covered. The welding assembly of the existing device is mostly fixed or can only realize single-dimensional adjustment such as up-down or left-right adjustment, the position adaptation in the front-rear, left-right and up-down three-dimensional space cannot be quickly and accurately completed according to the differences of the part welding stations, the welding efficiency is low, and welding defects are easily caused by adjustment errors.

The bridge prefabricated assembly structure comprises an L-shaped prefabricated structure and a shear convex key assembly, the L-shaped prefabricated structure comprises a prefabricated horizontal section and a prefabricated vertical section, the prefabricated vertical section is arranged at the end, away from an existing bridge, of the prefabricated horizontal section, and the shear convex key assembly is arranged at the end, away from the existing bridge, of the prefabricated horizontal section. The shearing force convex key assembly comprises a plurality of top plate shearing force convex keys, web plate shearing force convex keys, bottom plate shearing force convex keys and transverse positioning shearing force convex keys. The prefabricated horizontal section and the prefabricated vertical section are each provided with a prefabricated section embedded hole channel allowing a steel beam to penetrate through. In this way, the stress performance of the L-shaped prefabricated structure after assembly and connection is improved by arranging the shear keys in different areas, and meanwhile, the pre-positioning capacity of the structure during assembly and connection can be enhanced through the transverse positioning shear convex keys, so that the construction efficiency and accuracy are improved; and by combining the steel beam prestress penetrating through the pre-buried hole channel of the prefabricated section, the structure connecting quality and the overall performance of the assembled structure can be improved, the concrete cracking risk is reduced, and the service life of the structure is prolonged.

The present invention relates to the field of shipbuilding technology, and specifically discloses a manhole grille quick installation auxiliary device, comprising a rectangular installation auxiliary plate, wherein the center position of the installation auxiliary plate is cut to form a manhole reference positioning hole; the installation auxiliary plate is provided with a plurality of transverse positioning groove groups and longitudinal positioning groove groups; each of the transverse positioning groove groups includes two oppositely arranged transverse positioning grooves, and the two transverse positioning grooves are respectively arranged at one opposite end of the manhole reference positioning hole; each of the longitudinal positioning groove groups includes two oppositely arranged longitudinal positioning grooves, and the two longitudinal positioning grooves are respectively arranged at the other opposite end of the manhole reference positioning hole; the notches of the transverse positioning grooves and the longitudinal positioning grooves are both oriented toward the manhole reference positioning hole and are connected to the manhole reference positioning hole. The present invention is easy to use, can reduce the labor intensity of workers, improve work efficiency, and ensure assembly quality.

The utility model provides an auxiliary tool for pipeline flange welding, which relates to the technical field of pipeline flange welding and comprises two fixing components and a pressing and supporting component. The fixing assembly comprises a transverse positioning section and a vertical positioning section which is vertically and upwards arranged on the transverse positioning section; during auxiliary positioning, the abutting supporting assembly is located between the two fixing assemblies and abuts against the faces, away from the vertical positioning sections, of the transverse positioning sections of the two fixing assemblies at the same time, so that the faces, close to the vertical positioning sections, of the transverse positioning sections of the two fixing assemblies abut against the inner pipe walls of a pipeline and a flange. And one surface, far away from the pipeline, of the flange abuts against the vertical positioning section. According to the technical scheme, the pipeline, the inner pipe of the flange and the outer side of the flange are positioned and fixed, the thickness of the flange does not need to be considered, and therefore the flange has the advantages of being high in applicability and capable of being matched with various flange thicknesses.