The utility model discloses a slewing bearing with oil drainage holes. The slewing bearing comprises an outer ring, an inner gear ring and a sealing belt, wherein a roller path is arranged between the outer ring and the inner gear ring, a plurality of roller path steel balls for separating the outer ring from the inner gear ring are arranged inside the roller path, a plurality of oil drainage holes are uniformly formed in the inner gear ring, and the outlets of the oil drainage holes are formed between tooth spaces of every two adjacent teeth on the inner gear ring. The certain oil drainage holes are additionally formed in the inner gear ring and are uniformly distributed in the gear circumference of the inner gear ring, residual grease accumulating in the roller path can be smoothly drained through the oil drainage holes, and the drained grease enters into the gear ring, so that not only is the problem of grease accumulation solved, but also the running gear can be lubricated in assistance, and the problem that grease cannot be added into the gear for lubrication in a later period is solved. According to the slewing bearing disclosed by the utility model, the grease is reasonably used, the tooth lubrication can be added, the possibility of lubricating the gear manually is reduced, and the problem that the grease cannot be added into the gear for lubrication in the later use period of the gear is solved.

Slewing bearing with oil drainage holes

The invention provides a crossed roller bearing. The crossed roller bearing comprises an inner bearing ring and an outer bearing ring, and the axes of the inner bearing ring and the outer bearing ring extend left and right; a rolling way where a rolling body is installed is defined by the inner bearing ring and the outer bearing ring, one of the inner bearing ring and the outer bearing ring is a split ring jointed by a left half ring and a right half ring, and the other one of the inner bearing ring and the outer bearing ring is an overall ring; and radial protruding rings are arranged on the circumferential face, facing one side of the split ring, of the overall ring, sealing rings in sealing fit with the left end faces and the right end faces of the radial protruding rings are arranged on the circumferential faces, facing one side of the overall ring, of the left half ring and the right half ring respectively, and the left end faces and the right end faces of the radial protruding rings are located between the left end face and the right end face of the overall ring and arranged on the left side and the right side of the rolling way respectively. By means of the crossed roller bearing, a sealing fit structure is arranged in the bearing so that the end faces of the two ends of the overall ring and the split ring of the bearing can be axially aligned, and the problems that the inner ring and the outer ring must be axially staggered and the axial length of the bearing is increased due to the fact that in a bearing in the prior art, a sealing structure is located on the end faces of the two sides of an inner ring and an outer ring are solved.

Crossed roller bearing

The invention discloses a heat treatment device for a rotary support outer ring raceway. The heat treatment device comprises a cooling barrel, the upper end of the cooling barrel is symmetrically provided with two supporting columns, the two supporting columns are provided with a heating unit capable of ascending and descending up and down through a horizontal beam, the cooling barrel is divided into upper and lower two layers, and the upper layer of the cooling barrel contains cooling liquid and is further internally provided with a positioning unit capable of moving up and down and capable of rotating. According to the heat treatment device for the rotary support outer ring raceway, by means of the positioning unit, rotary support outer rings of various sizes can be placed, and heat treatment is performed on these rotary support outer rings at the same time, and the heat treatment efficiency of the rotary support outer ring raceway is greatly improved; and in addition, by means of the heat treatment device for the rotary support outer ring raceway, heating, heat preservation and cooling are concentrated on one device, three heat treatment processes of the heating, the heat preservation and the cooling are made to have good continuity, and the heat treatment effect is guaranteed.

Heat treatment device for rotary support outer ring raceway

The invention provides an adjustable quenching and heating device for tempering production line equipment. The adjustable quenching and heating device comprises a base, a protruding block and a cooling pipe. A threaded plate is axially connected into the base. Three sliding supports are evenly distributed on and sliding connected with the top of the base. A high-frequency heating pipe is fixedly connected with the top of each sliding support. A cooling pipe is fixedly connected with the inner lower side of the base. A motor is fixedly connected with the right end face of the base. By changingthe sizes of the inscribed circles of the three high-frequency heating pipes and performing heating through the high-frequency heating pipes with the similar inscribed circles, the aim of hanging thediameter of quenched parts is realized, the adaptability and production efficiency of the quenching equipment are improved, the quenching work of a step shaft can be completed at a time, the quenchingprocess is reduced, productivity is improved, and production cost is reduced.

Adjustable quenching and heating device for tempering production line equipment

The invention relates to a transmission device of a supporting frame for steel piece quenching. The transmission device of the supporting frame for steel piece quenching comprises a distance adjusting air cylinder, and an air cylinder shaft of the distance adjusting air cylinder is connected with a base plate. A slide way is arranged below the base plate, a motor is arranged on the left side of the base plate, and a bearing block supporting frame is arranged on the right side of the base plate. A rolling shaft is arranged at the upper end of the bearing block supporting frame. A chain wheel is fixedly arranged at the left end of the rolling shaft, and a semi-connecting frame is fixedly arranged at the right end of the rolling shaft. The motor drives the rolling shaft to rotate on the bearing block supporting frame in a chain transmission mode. A spline shaft is arranged on the right end face of the semi-connecting frame in a spline connecting mode. A double nut is arranged on the part, located in the semi-connecting frame, of the left end of the spline shaft, a spring is arranged on the part, located on the right side of the semi-connecting frame, of the spine shaft in a sleeved mode, and a friction piece is fixedly arranged at the right end of the spline shaft. The transmission device of the supporting frame for steel piece quenching can control the positions of all parts located in a supporting device and improve the uniformity of quenching received by the parts. The friction piece located at the end of the spline shaft can drive a shaft located on the same straight line with the spline shaft to rotate, and the centripetal force of the shaft with force applied cannot be increased.

Transmission device of supporting frame for steel piece quenching

The utility model discloses a quenching tool for a raceway of a small-diameter slewing bearing outer circle. The quenching tool comprises a bracket. A bearing block and a horizontally arranged rolling bearing are fixed on the bracket. A first driven gear and a second driven gear are sequentially arranged on the bracket from top to bottom in a rotating way, and are meshed with each other. The quenching tool comprises the slewing bearing outer circle. A gear ring outside the slewing bearing outer circle is meshed with the first driven gear. The end face of the slewing bearing outer circle is attached outside the rolling bearing. A third driven gear is arranged at the front end of a rotating shaft of the second driven gear. A driving gear meshed with the third driven gear is arranged on the bracket in a rotating way. A motor is arranged on one side of the bracket. An output shaft of the motor is in transmission connection with a rotating shaft of the driving gear. A displacement sensor is arranged on one side of the slewing bearing outer circle, and is electrically connected with the motor through a control loop. The quenching tool is rational in structure, and has a good quenching effect; and the rotation of the motor is controlled by the displacement sensor and the control loop, so that unnecessary repeated rotation is avoided, and the cost is lowered.

Quenching tool for raceway of small-diameter slewing bearing outer circle

The utility model discloses a cross pin roller type slewing bearing. The cross pin roller type slewing bearing comprises an inner ring and an outer ring, wherein an annular raceway is arranged between matching surfaces of the inner ring and the outer ring, a cross section of the annular raceway is quadrilateral, a plurality of pin rollers are arranged in the annular raceway and distributed in a ring shape along the annular raceway, an annular groove is respectively arranged between the matching surfaces of the inner ring and the outer ring above the annular raceway and below the annular raceway, and an annular sealing strip is arranged in each annular groove. An oil hole leading to the annular raceway is arranged on the outer ring, a nozzle is arranged on the outer ring, and a gear ring is arranged on an outer wall of the outer ring. The cross pin roller type slewing bearing has a reasonable structure; the shape of the annular raceway between the inner ring and the outer ring of an existing slewing bearing is changed, original rollers are replaced by the pin rollers, and therefore bearing capacity of the slewing bearing is effectively enlarged; and the cross pin roller type slewing bearing is widely used in the occasions that the size of a host structure is limited and large bearing capacity is needed.

Cross pin roller type slewing bearing

The utility model discloses a worm wheel type pivoting support. The worm wheel type pivoting support comprises an inner ring and an outer ring which are arranged in a vertically staggered mode, wherein an annular roller path is arranged between matching surfaces of the inner ring and the outer ring; a plurality of steel balls which are distributed annularly along the annular roller path are arranged in the annular roller path; an annular groove is respectively formed between the matching surfaces of the inner ring and the outer ring which are respectively positioned on the upper part of the annular roller path and the lower part of the annular roller path; an annular sealing strip is arranged in the annular groove; and an oil injection hole leading to the annular roller path is formed on the outer ring, and an oil nozzle is arranged on the outer ring. The worm wheel type pivoting support is reasonable in structure, sensible and rapid in response and stable and reliable in work, is applied to a rotating mechanism of a solar generating system, and ensures the working accuracy of the rotting mechanism, so that an accurate tracking function of the solar generating system is realized.

Worm wheel type pivoting support

The utility model discloses a turning tool for a cross-roller type slewing bearing raceway. The turning tool comprises a knife handle and a knife holder, wherein a positioning block is arranged on one side of the bottom of the knife handle; a diamond-shaped blade is fixed in a blade mounting groove which is formed in the front end surface of the knife holder; a positioning groove is formed in the knife holder on the rear side of the diamond-shaped blade; the rear end of the diamond-shaped blade is clamped in the positioning groove; and chamfers are arranged at the front ends of both the knife holder and the diamond-shaped blade. The turning tool has the advantage of reasonable structure; the diamond-shaped blade is mounted in the knife holder to process the raceway with a square cross section; and the positioning groove in the knife holder is adopted to position the diamond-shaped blade, the strength and the processing precision of the blade are improved, and the purposes of safety and reliability are achieved.

Yuyuan Zhang

Papers

Quenching tool for raceway of small-diameter slewing bearing outer circle

Cross pin roller type slewing bearing

Worm wheel type pivoting support

Turning tool for cross-roller type slewing bearing raceway