243 results about "Set square" patented technology

The invention relates to an underground hole drilling location ruler and a quick orientation method for hole drilling, which is characterized in that a right-angle transparent triangular rule; one right-angle side of the triangular rule is 0 degree, and the other right-angle side is 90 degrees; the sloping side of the triangular rule is provided with scale from 0 degree to 90 degrees; in the quick orientation method for hole drilling, a set of datum lines which are vertical to the middle line of a lane on a horizontal projection plane are arranged in the lane or a roadway wall drilling field; the height of the datum lines is regulated, so that the lines intersect with a drill pipe at an intersection point on the same horizontal plane; the right-angle top point of the hole drilling location ruler is coincident with the intersection point: one right-angle side leans to the drill pipe, and the angles formed between the other right-angle side and the datum lines are the relative location angles for hole drilling. The invention is applicable in quick orientation for underground coal mine hole drilling and drill hole acceptance; the underground hole drilling location ruler is simple to be manufactured, with convenient operation in quick orientation for hole drilling and the orientation error less than 0.5 degree.

The invention provides a spatial positioning method based on square label and vision, comprising the following steps: obtaining inner parameter matrices of two cameras by calibration; setting square labels with different ids at a certain fixed point and a position to be located; using the two cameras to shoot the square labels at the fixed point and the position to be located simultaneously, obtaining the coordinate information of each square label, and obtaining a three-dimensional world coordinate with the fixed point as an original point and three rotating angles from a camera coordinate system to the three-dimensional world coordinate system of the two cameras according to the coordinate information and the inner parameter matrices; and obtaining a three-dimensional world coordinate ofeach square label central point with the fixed point as the original point according to the three-dimensional world coordinate with the fixed point as an original point and the three rotating anglesfrom a camera coordinate system to the three-dimensional world coordinate system of the two cameras, which can solve the problems of slow speed, low precision, complicated operation and high equipmentrequirements of the current spatial positioning method.

The invention relates to a manufacturing method for automotive axle housing, which belongs to the manufacturing method for a steel automotive axle housing. The method comprises the following steps specifically: firstly utilizing a round steel tube to carry through diameter reducing at two ends and then utilizing a forcing press to carry through shape pressing on partial areas in the middle of a roughcast; opening a long slot passing from front to back in the middle of a tube roughcast; then carrying out extrusion in the middle of the tube roughcast to expand the middle of the tube roughcast to be jointed with the shape of a die; finally carrying out shaping on the axle housing to reach the roughcast dimension of an axle housing part. The roughcast is processed partially and welded with a set square to form a complete axle housing part. The method has the advantages of few working procedures, low cost, small attenuation degree in the middle area of the axle housing, high axle housing intensity, few disposable investments on device, high manufacturing efficiency, being suitable for batch manufacturing, simple technique of axle housing manufacturing, low reform cost and the die can realize standardization.

The invention discloses a sliding miter square and relates to a drawing tool of student stationery, which brings convenience for students to draw height lines, vertical lines and parallel lines. The sliding miter square comprises two straight poles with sliding grooves and a sliding rails which are matched with each other; the sliding rail on one straight pole is embedded in the sliding groove of the other straight pole and is in matching connection with the sliding groove of the other straight pole, and moreover, the sliding rail can move in the sliding groove. In sliding process, the two straight poles are vertical to each other all the time, and the two straight poles are provided with scale lines and marks for showing length. When in use, one straight pole is fixed relatively, and the other straight pole is moved to a specific position, and thus, height lines, vertical lines and parallel lines can be drawn conveniently. Used for drawing, the sliding miter square is more convenient than a set square and a straight scale.

The invention provides a steel tube bundling device, which comprises two cross beams vertical to a support track and respectively located on two ends of the support track, wherein at least one of the two cross beams can be movably assembled on the support track; bundling support frames are respectively arranged on two ends of each cross beam; at least one of the two bundling support frames on each cross beam can be movably assembled on the cross beam; each bundling support frame comprises a stand column, a fixed set square and a movable set square; and each movable set square can be slidably connected onto each stand column. The steel tube bundling device can be used for bundling steel tubes with different lengths, can bundle the steel tubes so as to form bundles with different shapes and different specifications, and is simple in structure and high in safety and flexibility.

The invention relates to a multipurpose mathematical teaching aid and belongs to teaching aids. The multipurpose mathematical teaching aid comprises an angle measuring circular plate and rulers and is characterized in that the angle measuring circular plate is of 360 degrees. A circle center shaft is mounted on the angle measuring circular plate. The angle measuring circular plate is connected with the two rulers through the circle center shaft. The rulers can form optional included angles by using the circle center shaft as the axis, and the included angles can be measured by the angle measuring circular plate. A movable groove is formed in one of the rulers. A movable clamp is mounted on the movable groove. A chalk clamp hole is formed in the middle of the movable clamp. The multipurpose mathematical teaching aid has the advantages that the teaching aid is integrated with the functions of a set square, an angle gauge, a ruler and a compass; when the teaching aid is used as the compass, a chalk is clamped in the chalk clamp hole, the circle center shaft is set at the preset position, and an arc can be drawn by moving the chalk clamp hole; during angle measuring, a user only needs to use the two rulers as the two edges, and the teaching aid is convenient and practical.

The invention discloses a tree height measuring triangular rule and an application method thereof. The tree height measuring triangular rule comprises a measuring ruler and two measuring ropes, wherein the length of the measuring ruler is 30 cm, the zero graduation positions of the two measuring ropes connect the two ends of the measuring ruler respectively, and a 30 cm position and a 51.96 cm position are respectively marked on the measuring ropes. The technical scheme of the application method is as follows: by using two tree height measuring triangles formed by the measuring ruler and the two measuring ropes in the tree height measuring triangular rule, selecting two observation points and aiming the visual line along the measuring ropes at treetop and tree bottom respectively, and measuring the tree height through measuring the horizontal distance of the two observation points without measuring the horizontal distance from observation points to the tree. Thus the disadvantage of unable measurement of the horizontal distance from the observation points to the tree in an observation area is overcome. In the invention, the measuring tool is simple and the operation is convenient. Thus the workload is minimized and the work efficiency is raised.

The invention relates to a baseplate of a single system flat knitting machine with parallel cardigans. The baseplate of a single system flat knitting machine with the function of parallel cardigans does not exist now. The baseplate provided by the invention is characterized in that the baseplate comprises a baseplate body, a magnetic steel plate, a sliding plate, left and right cardigan motors, a herringbone set square provided on the upper portion of the baseplate body, a reversing set square, left and right cardigan set squares, left and right knitting upper homing set squares and left and right back stitching set squares, left and right middle homing set squares arranged at the middle of the baseplate, left and right little set squares, left and right abdicating cardigan set squares, left and right joint set squares, left and right cardigan set squares, centre set square, joint set square, left and right needle selection lower homing set squares and a middle homing set square, left and right cast on set square arranged at the lower portion of the baseplate, left and right needle selection set square and a needle carrying set square; wherein the magnetic steel plate is arranged at the rear face of the baseplate, and the sliding plate is arranged on the magnetic steel plate. The baseplate provided by the invention has low produce costs and has function of parallel cardigans.

The invention relates to a folding fastener which comprises a fastener A, a nut, a bolt, a fastener B, a hinged pin B, a center plate and a hinged pin A. The center plate is a center part and is integrally of a set square-shaped structure. A coil hole is arranged at the position of one angle of the center plate and is connected with the fastener A through the hinged pin A. A coil hole is arranged at the position of another angle of the center plate and is connected with the fastener B through the hinged pin B. A through hole is arranged at the third angle of the center plate. The bolt is inserted in the through hole and is screwed down by the nut, so that the fastener A, the center plate and the fastener B are connected and fixed on the bolt, and thus, the lap joint or the connection fixing of beam frames is realized. In the invention, after being subjected to cold press molding, a steel plate is subjected to double rust protection treatment of purification and galvanization, so that the rust-proofing capability is greatly improved and the service life is long and is far longer than that of a common fastener; due to the adoption of a cold press folding technology, in the production process, the energy consumption is low and no pollution is generated; and the folding fastener has a simple overall structure, is convenient to operate and use and has high stability and high reliability.

The invention discloses a multifunctional cutting insert and a tool, the cutting insert comprises a set square-shaped cutting insert body enclosed by an upper surface, a lower surface and three side surfaces for connecting the upper surface and the lower surface, the upper surface and the lower surface have same structure, the upper surface and the lower surface are composed of a plane and front insert surfaces, three side surfaces and each front insert surface are intersected to form three pair of cutting edge groups which are uniformly distributed at the edge of the cutting insert body, the cutting edge groups are composed of a main cutting edge, an auxiliary cutting edge and an angle cutting edge for connecting the main cutting edge and the auxiliary cutting edge, an included angle alpha of a projection line of the main cutting edge and the auxiliary cutting edge on a plane is in a range of greater or equal to 85 DEG and less than or equal to 95 DEG C, the auxiliary cutting edge is a protruding arc-shaped cutting edge, and the main cutting edge and the auxiliary cutting edge are intersected with the plane. The tool comprises a tool body, at least one tool groove is arranged on the tool body, and the multifunctional cutting insert is fixedly arranged in the tool groove through a fastener. The multifunctional cutting insert and the tool can be used for processing a step surface with 90 DEG and can be used for rapid feeding processing.

The invention discloses a telescopic combined teaching tool which is composed of a fixed ruler 1, an I-shaped movable ruler 2 and an I-shaped movable ruler 3. A protractor is arranged at one end of the fixed ruler 1 and a steel pin is arranged at the other end of the fixed ruler 1. A sliding pin is arranged at one end of the I-shaped movable ruler 2 and a compass foot clamp is arranged at the other end of the I-shaped movable ruler 2. The movable ruler 2 is hinged to the protractor of the fixed ruler 1 through a hinge shaft and a hinging point coincides with the circle center of the protractor. The movable ruler 3 is hinged to a straight ruler section of the fixed ruler 1 through a hinge shaft and a hinging point is located on the symmetric center line of a straight ruler and the movable ruler 3. The movable ruler 2 and the movable ruler 3 are connected through a sliding block, sliding grooves are formed in the movable rulers, and the combined teaching tool is of a telescopic structure. The telescopic combined teaching tool has the functions of a compass, the protractor, a set square and the straight ruler, the requirements of mathematical teaching, especially solid geometry teaching are met, the situation that a teacher needs to replace teaching tools frequently in the drawing process is avoided, the drawing speed can be increased, and teaching quality and efficiency can be improved; and the teaching tool is telescopic so that the use requirements of different occasions can be met.

The invention relates to an angle square gauge, which is composed of a cutting square gauge, an axle sleeve, a cutting square tip, an axle, an angle square instrument, a suspended-axle angle square, an angle square gauge, a groove-angle square gauge, a slot, a connecting angle square, a connecting piece, an angle drawing instrument, an angle protractor, a small-scale calibration group, an opening, a metric scale, a foot rule, a coordinatometer, a working edge, a hole gauge and an angle square divider. The angle square gauge is characterized in that the angle of the angle protractor is smaller than the spacing of an angle value through combining the small-scale calibration group, when the angle protractor is arranged into small-angle scale from full scale, the coordinatometer, the angle square instrument, the suspended-axle angle square, the angle square gauge, the groove-angle square, the connecting angle square and the angle drawing instrument are adopted; the angle protractor can only has the form of full angle, the center of the axle sleeve of the cutting square gauge and the extension line of the central axle are respectively coincided with the starting point of the metric scale and the working edge, and simultaneously, two lengths and one angle are measured. The angle square gauge has the functions of a straight ruler, compasses, an angle protractor and a set square, has reasonable structure, high measuring and mapping precision, measuring tools with different forms, is widely used through separation and combination, and can improve the drawing operating efficiency and the drawing benefits.

The invention discloses a static mixer for a selective catalytic reduction flue gas denitration system. The static mixer is mounted in a flue of the denitration system, and comprises a plurality of mixing units in the same structure, wherein each mixing unit is formed by jointly splicing eight identical right-angle set square structures around the same central point; the eight identical right-angle set square structures are divided into four groups; each group comprises two right-angle triangle structures connected via right-angle sides; the adjacent groups are completely connected via bevel sides of the right-angle set square structures respectively; and central points of the mixing units are correspondingly located right above circle centers of nozzles of an ammonia spray grid of the flue respectively. According to the static mixer, the mixing degree of ammonia and flue gas can be improved significantly; the uniformity of a mole ratio of ammonia to nitrogen is improved; smaller pressure loss of the system is generated; short-distance mixing is achieved; and the static mixer has the characteristics of obvious burbling effect, compact overall structure, convenience in processing and mounting and the like.

The present invention discloses a connection structure for a suspension strain insulator string. The connection structure comprises a pre-positive unit, a double-layer set square (15) and a second-change six-link plate (21). The double-layer set square (15) is provided with three string hanging holes (15.1). The second-change six-link plate (21) is provided with two string lifting holes (31) and six ring hanging holes (32). The pre-positive unit is connected with one string hanging hole (15.1) of the double-layer set square (15). The other two string hanging holes (15.1) of the double-layer set square (15) are respectively connected with the string lifting holes (31) of the second-change six-link plate (21) on the front and rear sides of the suspension strain insulator string. The ring hanging holes (32) of the second-change six-link plate (21) are connected with a wire (37). Based on the above structure, the functional requirements of turning around a corner, bearing the wire pressure, preventing the falling of the string, isolating a failure, adjusting the height of a tower and the like can be met. Meanwhile, the twisting problem of link plates can be well solved and the construction cost is lowered. Moreover, the direct jump-through is realized and the construction cost is lowered.

The invention discloses a multifunctional set square for mechanical drawing. The multifunctional set square for mechanical drawing comprises a set square body and further comprises a straight ruler and a connecting part. The connecting part is of an L-shaped structure. The connecting part comprises a straight connecting edge and an arc connecting edge. One end of the connecting straight edge is rotationally connected with the set square body. The straight ruler is fixedly connected with the connecting straight edge. The multifunctional set square for mechanical drawing has the beneficial effects that the multifunctional set square is provided with the set square body and the straight ruler so that a tool for measuring angles can be composed of the set square body and the straight ruler, angle measuring is also convenient, and inclined straight lines can be drawn conveniently and precisely.

The invention relates to a ruler convenient to use. Existing rulers only have a single function and can not meet requirements of people. The ruler convenient to use comprises a ruler body, wherein an adjustable electronic watch and a plurality of conveniently-used drawing cavities are arranged on the ruler body, one end of the ruler body is straight and is provided with a fluorescence scale layer, and the other end of the ruler body is wavy. The conveniently-used drawing cavities comprise a right triangle drawing cavity, an isosceles triangle drawing cavity, a square drawing cavity, an isosceles pentagon drawing cavity and an isosceles hexagon drawing cavity. A protractor is arranged at the left end of the ruler body, wherein an auxiliary ruler used for assisting with angle drawing is connected with the upper end of the protractor through an elastic cord, and small holes with intervals of 1 cm are formed in the auxiliary rule. A magnifying lens is arranged on the ruler body. A foldable set square is in hinged connection with the right end of the ruler body. The ruler convenient to use enables people to learn and adjust date and time timely, comprises the plurality of conveniently-used drawing cavities used for assisting with the drawing, and is convenient to carry and simple in operation and good in practical application value and popularizing value.

The invention discloses a multifunctional drawing device which relates to teaching aids and has the functions of a ruler, a set square, a protractor and a bow compass, with convenient use. The multifunctional drawing device mainly consists of two rod pieces; the first rod piece is in ruler shape and the longitudinal direction of the first rod piece is provided with a long slot; a lead core clamp which can slide along the long slot is arranged in the long slot; one end of the second rod piece is the protractor and the other parts are in the ruler shape; the center of an arc at one end of the first rod piece is hinged with the circle center of the protractor on the second rod piece by a hollow shaft. The invention has simple structure, is convenient and practical and can be broadly applied to teaching activities.

A multipurpose plotter consists of angle-measuring and circle-drawing rule with protractor in its one end and diameter holes; scaled radius rule with radius hole array and circle center holes; circle center positioning pen and compass-rule. There is positioning linked part set in the protractor to make the plotter easy to move and take out. The constituents of the present invention may be assembled and disassembled easily and the multipurpose plotter has all the functions of set square, rule, protractor and compass. Being accurate and portable, the present invention is suitable for student and professional to use.

A rapid and accurate multipurpose drawing instrument comprises a fixed straight ruler and a protractor. The rapid and accurate multipurpose drawing instrument is characterized in that the rapid and accurate multipurpose drawing instrument is further provided with a parallel line four-bar mechanism, a vertical line mechanism, an arc sliding block mechanism and a scale pointer which are connected with the fixed straight ruler and the protractor into a whole; the scale pointer is connected with the center of the fixed straight ruler and rotates by 360 degrees with the connecting point as the center; and the arc sliding block mechanism is arranged on the back face of the vertical line mechanism, and the parallel line four-bar mechanism is connected with the bottom of the vertical line mechanism and the bottom of the arc sliding block mechanism and connected with the vertical line mechanism and the arc sliding block mechanism into a whole in a folding manner. The rapid and accurate multipurpose drawing instrument has the beneficial effects that due to the fact that the straight ruler, the protractor, a set square, a T square, compasses and the three newly-designed mechanisms are combined into a whole, carrying is convenient, and through function combining, parallel lines, vertical lines, arcs, halving lines and the like can be rapidly and accurately drawn according to the given size; and conversion of different tools during drawing is reduced, and the drawing efficiency is improved.

The invention relates to a rear axle housing set square stamping die, and belongs to the technical field of automotive chassis system manufacturing. The rear axle housing set square stamping die is composed of a lower die base, a guide column, a guide sleeve, an upper die base, a lower die and an upper die. The lower die base and the upper die base are movably connected with the guide sleeve through the guide column, the lower die and a movable block c are fixedly installed on the lower die base, the upper die, a movable block a and a movable block b are fixedly installed on the upper die base, and a locating block a, a locating block b and a locating block c are installed on the lower die; a rubber column is installed on the lower die, the upper end of the rubber column makes contact with the movable block c, and the lower end of the rubber column makes contact with the lower die base; a rubber column is installed on the upper die, the upper end of the rubber column is in contact with the upper die base, and the lower end of the rubber column is in contact with the movable block a and the movable block b. The rear axle housing set square stamping die is reasonable in structural design, the die can be suitable for stamping set squares of various models, precision of shapes and dimensions of stamped set squares is high, the utilization rate of materials is high, the upper die and the lower die are long in service life, production cost is low, the production speed is high, and production and manufacturing cost of the set squares and the whole rear axle housing is greatly reduced.

The invention provides a dual-purpose ruler. One side angle of a triangular ruler is connected with a movable ruler which can be bent and folded, the movable ruler is connected to the side angle of the triangular ruler by adopting a hinged shaft, and the triangular ruler and the movable ruler are provided with continuous distance scale layers. The invention can be used as the triangular ruler, can also be used as a long ruler simultaneously by stretching and unfolding the movable ruler to in parallel and level to the triangular ruler, and has the characteristic of flexibility and convenience in use.