Automatic tipping device for three-tube bundle

Abstract

The present invention discloses an automatic side-turning device for a three-pipe bundle. The present invention includes a left side baffle mechanism, a right side baffle mechanism, and a balance buffer mechanism adjustment base; the adjustment base serves as the bottom of the automatic side-turning device, the left side baffle mechanism is installed on one side of the adjustment base, the right side baffle mechanism is installed on the other side of the adjustment base, and the balance buffer mechanism is fixedly installed under the left side baffle mechanism. The device of the present invention has a simple structure, is convenient to operate, and has strong practicability, realizing the automatic side-turning action of the three-pipe bundle, and can also be applied to other similar places.

Description

Technical Field

[0001] The invention relates to a rollover device, in particular to an automatic rollover device for a three-tube bundle. Background Art

[0002] At present, steel pipe forming and bundling equipment in steel mills stack steel pipes in a triangle or hexagonal manner. Generally, three steel pipes are usually stacked in an inverted triangle ▽ in a steel mill. They are first stacked and formed on a forming frame, and then bundled by the bundling equipment. After bundling, they are transported by rollers to complete the unloading. However, since the bundling position of the bundling equipment needs to be on a horizontal plane, the bundling position of the three steel pipes is the upper top surface of the inverted triangle ▽. The lower layer is a single steel pipe and the upper layer is two steel pipes. Normal transportation is impossible. Therefore, the inverted triangle of the three steel pipes needs to be turned over 60 degrees, so that the lower layer is two steel pipes and the upper layer is a single steel pipe, and then transported to complete the unloading. Before this, the forming and bundling of three steel pipes in steel pipe plants was completely achieved manually, which was not only inefficient but also highly dangerous. The present invention can automatically and efficiently complete the rollover action of the three-steel-pipe three-pipe bundle, which is beneficial to the factory to realize full-automatic production, reduce manual intervention, improve production efficiency, and ensure the personal safety of operators. Summary of the invention

[0003] In order to overcome the problems that three steel pipes in three-pipe bundles in the original steel pipe factory can only be bundled manually, cannot achieve automated production, have low efficiency, and have low operator safety, the purpose of the present invention is to provide an automatic rollover device for three-pipe bundles.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0005] The present invention comprises a left side stop mechanism, a right side stop mechanism and a balancing buffer mechanism adjusting base; the adjusting base serves as the bottom of the automatic rollover device, the left side stop mechanism is installed on one side of the adjusting base, the right side stop mechanism is installed on the other side of the adjusting base, and the balancing buffer mechanism is fixedly installed below the left side stop mechanism.

[0006] The adjustment base includes a hand wheel, a shaft end retaining ring, a right vertical plate, a right-hand screw, a right-hand screw nut, a right-hand movable slider, a screw connecting sleeve, a left-hand movable slider, a left-hand screw nut, a left-hand screw, a left vertical plate, a base, a bearing assembly, a first baffle, a right-hand stop roller shaft, a left-hand stop roller shaft, a second baffle, a slide block, and a copper plate;

[0007] The base is fixedly installed on the ground, and the chute block is fixedly installed on the upper surface of the base. A left vertical plate is fixedly installed on one end face of the chute block through bolts, and a right vertical plate is fixedly installed on the other end face of the chute block through bolts. The side where the left vertical plate is installed is the left side of the adjustment base, and the side where the right vertical plate is installed is the right side of the adjustment base. A horizontal through chute is opened in the middle of the chute block, and a left-handed moving slider and a right-handed moving slider are slidably installed in the through chute in sequence from left to right. The left-handed moving slider and the right-handed moving slider are respectively movably sleeved with a left-handed lead screw and a right-handed lead screw through a left-handed lead screw nut and a right-handed lead screw nut; on the upper and lower end faces of the left-handed moving slider and the right-handed moving slider, copper plates are installed on both the left and right sides along the direction of the left-handed lead screw, and each copper plate is connected to the upper or lower end face of the through chute, so that the left-handed moving slider and the right-handed moving slider move under the limit and guidance of the copper plates;

[0008] The left end of the left-handed lead screw extends out of the left-handed moving slider, and the right end of the left-handed lead screw is coaxially fixedly connected to the left end of the right-handed lead screw through a lead screw connecting sleeve; a right vertical plate through hole is opened on the right vertical plate, and a bearing assembly is fixedly installed in the right vertical plate through hole. The right end of the right-handed lead screw extends out of the right-handed moving slider and is coaxially movably connected to the bearing assembly, and a handwheel is coaxially sleeved at the end. An end shaft retaining ring is coaxially fixedly installed on the right end face of the right-handed lead screw through bolts;

[0009] A left rotation shaft through hole with an axis perpendicular to the axis of the left-handed lead screw is opened on the left-handed moving slider. One end of the left side roller shaft extends into the left rotation shaft through hole and is coaxially movably installed with the left-handed moving slider, and the other end of the left side roller shaft is connected to the left side side stop mechanism; a second retaining piece is movably sleeved in the middle of the left side roller shaft, one side of the second retaining piece is connected to the shaft shoulder, and the other side of the second retaining piece is connected to the left side side stop mechanism;

[0010] On the right-handed moving slider between the right-handed lead screw and the through chute, a right rotation shaft through hole with an axis perpendicular to the axis of the right-handed lead screw is opened. One end of the right side roller shaft extends into the right rotation shaft through hole and is coaxially movably installed with the right-handed moving slider, and the other end of the right side roller shaft is connected to the right side side stop mechanism; a first retaining piece is movably sleeved in the middle of the right side roller shaft, one side of the first retaining piece is connected to the shaft shoulder, and the other side of the first retaining piece is connected to the right side side stop mechanism; the handwheel rotates circumferentially to drive the right-handed lead screw and the left-handed lead screw to rotate, and then drives the left-handed moving slider and the right-handed moving slider to move closer to or separate from each other, so as to adjust the distance between the left side side stop mechanism and the right side side stop mechanism.

[0011] The left side side stop mechanism includes a left side roller cylinder, a left side roller cylinder ear seat, a left side roller cylinder seat, a left side roller cylinder ball eye joint, a left side roller cylinder shaft split pin, a left side roller cylinder shaft, a left side roller mounting seat, a linear guide pair and a left side roller assembly;

[0012] The guide rail is fixedly installed on the upper surface of the left stop roller mounting seat, and the four stop roller mounting seat sliders are evenly arranged at equal intervals and slidably installed in the guide rail to form a linear guide pair. The stop roller mounting seat slider slides along the guide rail, and the lower end surface of the left stop roller assembly is fixedly connected with the upper end surfaces of the four stop roller mounting seat sliders respectively. The upper end surface of the left stop roller mounting seat is provided with a strip-shaped long groove, and the balancing buffer mechanism passes through the strip-shaped long groove and is fixedly connected with the lower end surface of the left stop roller assembly; a left mounting seat rotating shaft through hole whose axis is perpendicular to the sliding direction of the stop roller mounting seat slider is provided in the middle of the right end of the left stop roller mounting seat, and the other end of the left stop roller rotating shaft of the adjustment base extends into the left mounting seat rotating shaft through hole and is fixedly connected with the left stop roller mounting seat;

[0013] The left stop roller cylinder seat is fixedly installed on the adjustment base at the lower side of the left stop roller mounting seat, the left stop roller cylinder ear seat is installed on the lower bottom surface of the left stop roller cylinder seat, and the ear shaft of the left stop roller cylinder is fixedly installed through the inner hole of the left stop roller cylinder ear seat;

[0014] A transmission arm extending along the lower right corner is fixedly arranged at the lower right corner of the left-side stop roller mounting seat, and a transmission through hole is opened at the lower end of the transmission arm. The left-side stop roller cylinder shaft passes through the transmission through hole and one end of the left-side cylinder fisheye joint to hinge the left-side cylinder fisheye joint and the transmission arm. A shoulder is provided on the end face of the end where the left-side stop roller cylinder shaft passes through the left-side cylinder fisheye joint. A left cylinder shaft through hole with an axis perpendicular to the axis of the left-side stop roller cylinder shaft is opened at the other end where the left-side stop roller cylinder shaft passes through the transmission through hole, and the left-side cylinder shaft cotter pin passes through the left cylinder shaft through hole, and the other end of the left-side cylinder fisheye joint is coaxially fixedly connected to the output shaft of the left-side stop roller cylinder.

[0015] The right side stop mechanism includes a right stop roller double-stroke cylinder, a right stop roller double-stroke cylinder ear seat, a right stop roller double-stroke cylinder mounting seat, a right cylinder fisheye joint, a right stop roller double-stroke cylinder shaft cotter pin, a right stop roller double-stroke cylinder shaft, a right stop roller mounting seat and a right stop roller assembly;

[0016] The lower end surface of the right stop roller assembly is fixedly mounted on the upper surface of the right stop roller mounting seat, a right mounting seat rotating shaft through hole is opened in the middle of the right end of the right stop roller mounting seat, and the other end of the right stop roller rotating shaft of the adjustment base extends into the right mounting seat rotating shaft through hole and is fixedly connected to the right stop roller mounting seat;

[0017] The right side stop roller double-stroke cylinder seat is fixedly installed on the adjustment base at the lower side of the right side stop roller mounting seat, the right side stop roller double-stroke cylinder ear seat is installed on the lower bottom surface of the right side stop roller double-stroke cylinder seat, and the ear shaft of the right side stop roller double-stroke cylinder is fixedly installed through the inner hole of the right side stop roller double-stroke cylinder ear seat;

[0018] A transmission arm extending along the lower right corner is fixedly arranged at the lower right corner of the right-side stop roller mounting seat, and a transmission through hole is opened at the lower end of the transmission arm, and the right-side stop roller double-stroke cylinder shaft passes through a transmission through hole and one end of the right-side cylinder fisheye joint to hinge the right-side cylinder fisheye joint with the transmission arm, and an end face of one end of the right-side stop roller double-stroke cylinder shaft passing through the right-side cylinder fisheye joint is provided with a shoulder, and a right cylinder shaft through hole is opened at the other end of the right-side stop roller double-stroke cylinder shaft passing through the transmission through hole, and the left-side cylinder shaft cotter pin passes through the right cylinder shaft through hole, and the other end of the right-side cylinder fisheye joint is coaxially fixedly connected to the output shaft of the right-side stop roller double-stroke cylinder.

[0019] The balance buffer mechanism comprises a buffer cylinder, a buffer cylinder ear seat, a buffer cylinder connecting seat, a buffer cylinder rotating shaft, and a buffer cylinder Y-type joint;

[0020] The two ear shafts in the middle of the buffer cylinder are embedded in the buffer cylinder ear seat, the upper end surface of the buffer cylinder ear seat is fixedly connected to the lower end surface of the left stop roller mounting seat by bolts, and the output shaft of the buffer cylinder rotating shaft is coaxially fixedly connected to one end of the buffer cylinder Y-type joint; the upper end surface of the buffer cylinder connecting seat is fixedly connected to the left side stop mechanism, and the other end of the buffer cylinder Y-type joint extends into the buffer cylinder connecting seat to fix the buffer cylinder Y-type joint to the buffer cylinder connecting seat through the buffer cylinder rotating shaft.

[0021] The right end of the left-hand screw rod is coaxially fixedly connected with the left end of the right-hand screw rod through a screw rod connecting sleeve. Specifically:

[0022] The left end of the right-handed screw rod is coaxially fixed to one end of the screw rod connecting sleeve by a second hinge hole bolt, and the second hinge hole bolt is fixedly connected to the nut after passing through another connecting sleeve through hole and the right-handed through hole, and a standard spring washer is used to prevent loosening.

[0023] The bearing assembly comprises an inner retaining ring, a bearing end cover, a first deep groove ball bearing, a second deep groove ball bearing, an outer retaining ring and a bearing seat;

[0024] The outer circumferential surface of the bearing housing is stepped. The smaller-diameter end of the bearing housing extends into the through-hole of the right vertical plate. The right end face of the larger-diameter end of the bearing housing is coaxially and fixedly installed with a bearing end cover through bolts. The bolts sequentially pass through the bearing end cover, the right end face of the larger-diameter end of the bearing housing, and are fixedly connected to the right end face of the right vertical plate. The through-hole of the bearing housing is coaxially installed with a second deep groove ball bearing, an outer retaining ring, a first deep groove ball bearing, and an inner retaining ring from left to right in sequence. The second deep groove ball bearing, the outer retaining ring, the first deep groove ball bearing, the inner retaining ring, and the bearing end cover are coaxially installed with the right end of the right-handed lead screw. The two end faces of the outer retaining ring are respectively connected to one end of the first deep groove ball bearing and one end of the second deep groove ball bearing. The other end of the first deep groove ball bearing is respectively connected to the bearing end cover and the inner retaining ring. The other end of the second deep groove ball bearing is connected to the right end face of the smaller-diameter end of the bearing housing. The bearing end cover is coaxially and movably installed with the right end of the right-handed lead screw through the inner retaining ring.

[0025] The left side roller assembly includes a left side roller drum, a left side roller drum shaft, a left side roller spherical roller bearing, a left side roller bearing seal cover, and a left side roller assembly mounting seat.

[0026] The left side roller assembly mounting seat is fixedly connected to the slider of the linear guide pair through bolts. The left side roller drum is hollow. The left side roller drum shaft coaxially passes through the middle of the left side roller drum, and both ends of the left side roller drum shaft extend out of the left side roller drum and are fixedly installed on one side of the left side roller assembly mounting seat. Steps are respectively arranged at both end faces of the left side roller drum and the left side roller drum shaft. Along the end direction, a left side roller spherical roller bearing and a left side roller bearing seal cover are sequentially and coaxially fixedly installed at the steps at both ends of the left side roller drum and the left side roller drum shaft.

[0027] The beneficial effects of the present invention are as follows:

[0028] 1) The provided left side blocking mechanism enables the left side roller assembly to move from the horizontal position to a position with an angle of 60° with the horizontal plane by the left side roller cylinder, realizing the left side limit of the three-pipe bundle. After the three-pipe bundle is tied up, the piston rod of the left side roller cylinder retracts, and the left side roller assembly moves from the position with an angle of 60° with the horizontal to the horizontal position.

[0029] 2) The provided right side blocking mechanism enables the piston rod of the right side roller double-stroke cylinder to extend to the first position. At this time, the right side roller assembly moves from the horizontal position to a position with an angle of 60° with the horizontal plane, realizing the right side limit of the three-pipe bundle of steel pipes. When the three-pipe bundle needs to be overturned after being tied up, while the left side roller assembly returns to the horizontal position, the piston rod of the right side roller double-stroke cylinder extends to the second position, realizing the overturning of the three-pipe bundle towards the left side roller assembly.

[0030] 3) A balancing buffer mechanism is provided. When the three-tube bundle falls over, the buffer cylinder provides a reverse force to balance the force when the three-tube bundle is laid down, so that the three-tube bundle is slowly laid down to protect the surface of the three-tube bundle from being scratched.

[0031] 4) The provided adjustment base can synchronously adjust the positions of the left and right stop roller assemblies relative to the center of the three-tube bundle according to the bottom width of the three-tube bundle, ensuring that the stop roller assemblies on both sides can play a centering and limiting role for the three-tube bundle. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural stereogram of the present invention

[0033] Figure 2 It is a top view of the structure of the present invention

[0034] Figure 3 It is the structural front view of the present invention

[0035] Figure 4 This is the front view of the adjustment base structure of the present invention

[0036] Figure 5 This is a top view of the adjustment base of the present invention

[0037] Figure 6 It is a side view of the adjustment base of the present invention

[0038] Figure 7 This is a partial enlarged view of the adjustment hand wheel of the present invention.

[0039] Figure 8 It is a schematic diagram of the right side guard structure of the present invention

[0040] Figure 9 It is a partial cross-sectional view of the right side guard of the present invention

[0041] Figure 10 This is a partial enlarged view of the retaining roller assembly of the present invention

[0042] Figure 11 This is a schematic diagram of the left side guard structure of the present invention.

[0043] Figure 12 Schematic diagram of the buffer mechanism of the present invention

[0044] Figure 13 This is a schematic diagram of the connection between the buffer mechanism and the left side stop mechanism of the present invention.

[0045] Figure 14 It is a working schematic diagram of the present invention

[0046] In the figure: A, left side stop mechanism, B, right side stop mechanism, C, balance buffer mechanism, D, adjustment base, 1, hand wheel, 2, shaft end retaining ring, 3, key, 4, inner retaining ring, 5, bearing end cover, 6, first deep groove ball bearing, 7, outer retaining ring, 8, right vertical plate, 9, bearing seat, 10, right-hand screw, 11, right-hand screw nut, 12, right-hand moving slider, 13, screw connecting sleeve, 14, left-hand moving slider, 15, left-hand screw nut, 16, left-hand screw, 17, left vertical plate, 18, base, 19, first round nut, 20. Stop washer for the first round nut, 21. First baffle, 22. Right stop roller shaft, 23. Stop washer for the second round nut, 24. Second round nut, 25. Left stop roller shaft, 26. Second baffle, 27. Slide block, 28. Copper plate, 29. Right stop roller double stroke cylinder, 30. Right stop roller double stroke cylinder ear seat, 31. Right stop roller double stroke cylinder mounting seat, 32. Right stop roller double stroke cylinder fisheye joint, 33. Right stop roller double stroke cylinder shaft cotter pin, 34. Right stop roller double stroke cylinder shaft, 35 , right side stop roller shaft oil-free bearing, 36, third round nut, 37, third round nut stop washer, 38, right side stop roller assembly mounting seat, 39, right side stop roller, 40, right side stop roller shaft, 41, right side spherical roller bearing, 42, right side stop roller bearing sealing cover, 43, right side stop roller mounting seat, 44, left side stop roller cylinder, 45, left side stop roller cylinder ear seat, 46, left side stop roller cylinder mounting seat, 47, left side stop roller cylinder fisheye joint, 48, left side stop roller cylinder shaft cotter pin, 49, left side stop roller cylinder shaft, 5 0. Left-side stop roller mounting seat, 51. Left-side stop roller shaft oil-free bearing, 52. Fourth round nut, 53. Stop washer for fourth round nut, 54. Linear guide pair, 55. Left-side stop roller assembly mounting seat, 56. Left-side stop roller drum, 57. Left-side stop roller drum shaft, 58. Left-side stop roller spherical roller bearing, 59. Left-side stop roller bearing sealing cover, 60. Buffer cylinder connecting seat, 61. Buffer cylinder pin shaft end retaining ring, 62. Buffer cylinder pin shaft, 63. Buffer cylinder Y-type joint, 64. Buffer cylinder, 65. Buffer cylinder ear seat. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0048] like Figure 1 and 2 As shown, the present invention includes a left side stop mechanism A, a right side stop mechanism B, a balancing buffer mechanism C and an adjusting base D; the adjusting base D serves as the bottom of the automatic rollover device, the left side stop mechanism A is installed on one side of the adjusting base D along the axial direction of the left-handed screw 16, the right side stop mechanism B is installed on the other side of the adjusting base D along the axial direction of the left-handed screw 16, and the balancing buffer mechanism C is fixedly installed below the left side stop mechanism A.

[0049] As shown Figure 1-7 in the figure, the adjustment base D includes a handwheel 1, an end retaining ring 2, a right vertical plate 8, a right-handed lead screw 10, a right-handed lead screw nut 11, a right-handed moving slider 12, a lead screw connecting sleeve 13, a left-handed moving slider 14, a left-handed lead screw nut 15, a left-handed lead screw 16, a left vertical plate 17, a base 18, a bearing assembly, a key 3, a first round nut 19, a stop washer for the first round nut 20, a stop washer for the second round nut 23, a second round nut 24, a first retaining piece 21, a right side roller rotating shaft 22, a left side roller rotating shaft 25, a second retaining piece 26, a chute block 27, and a copper plate 28;

[0050] The base 18 is fixedly installed on the ground. The chute block 27 is fixedly installed on the upper surface of the base 18. One end face of the chute block 27 is fixedly installed with a left vertical plate 17 through bolts, and the other end face of the chute block 27 is fixedly installed with a right vertical plate 8 through bolts. The side where the left vertical plate 17 is installed is the left side of the adjustment base D, and the side where the right vertical plate 17 is installed is the right side of the adjustment base D. A horizontal through chute is opened in the middle of the chute block 27. A left-handed moving slider 14 and a right-handed moving slider 12 are slidably installed in the through chute in sequence from left to right. A left-handed lead screw 16 and a right-handed lead screw 10 are movably sleeved on the left-handed moving slider 14 and the right-handed moving slider 12 respectively through a left-handed lead screw nut 15 and a right-handed lead screw nut 11. The moving sliders are fixedly sleeved outside the lead screw nuts, and the lead screw nuts are threadedly sleeved on the lead screws; On the upper and lower end faces of the left-handed moving slider 14 and the right-handed moving slider 12, two copper plates 28 are installed on both the left and right sides along the direction of the left-handed lead screw 16. The length of each copper plate 28 is the same as the length of the through chute. Each copper plate 28 is connected to the upper or lower end face of the through chute, so that the left-handed moving slider 14 and the right-handed moving slider 12 move under the limit and guidance of the copper plates 28;

[0051] The left end of the left-handed lead screw 16 extends out of the left-handed moving slider 14 and is located inside the through chute. The middle part of the left-handed lead screw 16 is movably connected to the left-handed moving slider 14 through a left-handed lead screw nut 15. The middle part of the right-handed lead screw 10 is movably connected to the right-handed moving slider 12 through a right-handed lead screw nut 11. The right end of the left-handed lead screw 16 is coaxially and fixedly connected to the left end of the right-handed lead screw 10 through a lead screw connecting sleeve 13; A right vertical plate through hole is opened on the right vertical plate 8, and a bearing assembly is fixedly installed in the right vertical plate through hole. The right end of the right-handed lead screw 10 extends out of the right-handed moving slider 12 and is coaxially and movably connected to the bearing assembly, and a handwheel 1 is coaxially sleeved at the end. The handwheel 1 and the right end of the right-handed lead screw 10 are fitted and installed through a key 3. The end retaining ring 2 is coaxially and fixedly installed on the right end face of the right-handed lead screw 10 through bolts. The end retaining ring 2 axially limits the handwheel 1;

[0052] The left rotating moving slider 14 is provided with a left rotating shaft through hole whose axis is perpendicular to the axis of the left rotating screw rod 16. One end of the left side roller rotating shaft 25 extends into the left rotating shaft through hole, and the end of the left side roller rotating shaft 25 is coaxially and movably installed with the left rotating moving slider 14 through a second round nut 24 and a second round nut stop washer 23. The other end of the left side roller rotating shaft 25 is coaxially and fixedly connected to the left mounting seat rotating shaft through hole of the left side stop mechanism A; A second retaining piece 26 is movably sleeved in the middle of the left side roller rotating shaft 25. One side of the second retaining piece 26 is connected to the shaft shoulder, and the other side of the second retaining piece 26 is connected to the left side stop mechanism A;

[0053] The right rotating moving slider 12 between the right rotating screw rod 10 and the through chute is provided with a right rotating shaft through hole whose axis is perpendicular to the axis of the right rotating screw rod 10. One end of the right side roller rotating shaft 22 extends into the right rotating shaft through hole, and the end of the right side roller rotating shaft 22 is coaxially and movably installed with the right rotating moving slider 12 through a first round nut 19 and a first round nut retaining washer 20. The other end of the right side roller rotating shaft 22 is connected to the right side stop mechanism B; A first retaining piece 21 is movably sleeved in the middle of the right side roller rotating shaft 22. One side of the first retaining piece 21 is connected to the shaft shoulder, and the other side of the first retaining piece 21 is connected to the right side stop mechanism B;

[0054] The right end of the left rotating screw rod 16 is coaxially and fixedly connected to the left end of the right rotating screw rod 10 through a screw rod connecting sleeve 13, specifically:

[0055] The middle of the left end face of the right rotating moving slider 12 is provided with a right rotating slider groove, and the middle of the right end face of the left rotating moving slider 14 is provided with a left rotating slider groove. A screw rod connecting sleeve 13 is installed in the left rotating slider groove and the right rotating slider groove. Both ends of the screw rod connecting sleeve 13 are provided with connecting sleeve through holes along the radial direction. The left end of the right rotating screw rod 10 is provided with a right rotating through hole along the radial direction and the left end of the right rotating screw rod 10 extends into the right rotating slider groove. The right end of the left rotating screw rod 16 is provided with a left rotating through hole along the radial direction and the right end of the left rotating screw rod 16 extends into the left rotating slider groove. The right end of the left rotating screw rod 16 is coaxially and fixedly installed at one end of the screw rod connecting sleeve 13 through a first precision reamed bolt. The first precision reamed bolt passes through a connecting sleeve through hole and the left rotating through hole and is then fixedly connected to a nut while using a matching standard spring washer to prevent loosening. The left end of the right rotating screw rod 10 is coaxially and fixedly installed at the other end of the screw rod connecting sleeve 13 through a second precision reamed bolt. The second precision reamed bolt passes through the other connecting sleeve through hole and the right rotating through hole and is then fixedly connected to a nut while using a matching standard spring washer to prevent loosening.

[0056] The bearing assembly includes an inner retaining ring 4, a bearing end cover 5, a first deep groove ball bearing 6, a second deep groove ball bearing, an outer retaining ring 7 and a bearing housing 9;

[0057] The outer circumferential surface of the bearing housing 9 is stepped. The smaller-diameter end of the bearing housing 9 extends into the through-hole of the right vertical plate. The smaller diameter of the bearing housing 9 is the same as the through-hole of the right vertical plate. The right end face of the larger-diameter end of the bearing housing 9 is coaxially and fixedly installed with a bearing end cover 5 by bolts. The bolts sequentially pass through the bearing end cover 5, the right end face of the larger-diameter end of the bearing housing 9 and are fixedly connected to the right end face of the right vertical plate 8; a second deep groove ball bearing, an outer retaining ring 7, a first deep groove ball bearing 6 and an inner retaining ring 4 are coaxially installed in the through-hole of the bearing housing 9 from left to right in sequence. The second deep groove ball bearing, the outer retaining ring 7, the first deep groove ball bearing 6, the inner retaining ring 4 and the bearing end cover 5 are coaxially installed with the right end part of the right-handed lead screw 10; both end faces of the outer retaining ring 7 are respectively connected to one end of the first deep groove ball bearing 6 and one end of the second deep groove ball bearing. The other end of the first deep groove ball bearing 6 is respectively connected to the bearing end cover 5 and the inner retaining ring 4. The other end of the second deep groove ball bearing is connected to the right end face of the smaller-diameter end of the bearing housing 9 to realize the axial positioning and axial clearance adjustment of the bearing; the bearing end cover 5 is coaxially and movably installed with the right end part of the right-handed lead screw 10 through the inner retaining ring 4.

[0058] The handwheel 1 rotates circumferentially to drive the right-handed lead screw 10 and the left-handed lead screw 16 to rotate, and further drives the left moving slider 14 and the right moving slider 12 to approach or separate from each other, so as to adjust the distance between the left side stop mechanism A and the right side stop mechanism B.

[0059] As Figure 11 shown, the left side stop mechanism A includes a left side stop roller cylinder 44, a left side stop roller cylinder ear seat 45, a left side stop roller cylinder seat 46, a left side stop roller cylinder ball eye joint 47, a left side stop roller cylinder shaft split pin 48, a left side stop roller cylinder shaft 49, a left side stop roller mounting seat 50, a left side stop roller shaft oil-free bearing 51, a fourth round nut 52, a fourth round nut retaining washer 53, a linear guide pair 54 and a left side stop roller assembly; the left-right position relationship of the left side stop mechanism A is the same as the left-right position relationship of the adjustment base D;

[0060] The guide rail is fixedly mounted on the upper surface of the left side roller mount 50, and four roller mount sliders are evenly arranged at equal intervals and slidably mounted in the guide rail to form a linear guide pair 54. The roller mount slider slides along the axial direction of the left-hand screw rod 16 of the guide rail, and the lower end surface of the left side roller assembly is fixedly connected to the upper end surfaces of the four roller mount sliders respectively. The upper end surface of the left side roller mount 50 is provided with a strip-shaped long groove, and the balancing buffer mechanism C passes through the strip-shaped long groove and is fixedly connected to the lower end surface of the left side roller assembly; a left mounting seat shaft through hole is provided in the middle of the right end of the left side roller mount 50, and the axis line is perpendicular to the sliding direction of the roller mount slider, and the left side roller shaft 25 of the adjustment base D is adjusted. The other end extends into the left mounting seat shaft through hole and is fixedly connected to the left stop roller mounting seat 50; a left stop roller shaft oil-free bearing 51 is coaxially fixedly installed at each end of the left mounting seat shaft through hole, and the other end of the left stop roller shaft 25 is coaxially fixedly installed on a left stop roller shaft oil-free bearing 51 through the fourth round nut 52 and the fourth round nut stopping washer 53. The second round nut 24 and the second round nut stopping washer 23, the fourth round nut 52 and the fourth round nut stopping washer 53 interact with each other to achieve the axial positioning of the left stop roller shaft 25, and thus the axial positioning of the left stop roller mounting seat 50. At the same time, the middle part of the left stop roller shaft 25 is coaxially fixedly installed on another left stop roller shaft oil-free bearing 51, and the other side of the second stop plate 26 is connected to another left stop roller shaft oil-free bearing 51;

[0061] The left side roller cylinder seat 46 is fixedly mounted on the adjustment base D at the lower side of the left side roller mounting seat 50, the left side roller cylinder ear seat 45 is mounted on the lower bottom surface of the left side roller cylinder seat 46, and the ear shaft of the left side roller cylinder 44 is fixedly installed through the inner hole of the left side roller cylinder ear seat 45;

[0062] A transmission arm extending along the lower right corner is fixedly provided at the lower right corner of the left-side stop roller mounting seat 50, and a transmission through hole is opened at the lower end of the transmission arm. The left-side stop roller cylinder shaft 49 passes through the transmission through hole and one end of the left-side cylinder fisheye joint 47 to hinge the left-side cylinder fisheye joint 47 with the transmission arm, and an end face of one end of the left-side stop roller cylinder shaft 49 passing through the left-side cylinder fisheye joint 47 is provided with a shoulder, and the other end of the left-side stop roller cylinder shaft 49 passing through the transmission through hole is provided with a left cylinder shaft through hole whose axis is perpendicular to the axis of the left-side stop roller cylinder shaft 49, and the left-side cylinder shaft cotter pin 48 passes through the left cylinder shaft through hole to realize the axial positioning of the left-side stop roller shaft 25; the other end of the left-side cylinder fisheye joint 47 is coaxially fixedly connected to the output shaft of the left-side stop roller cylinder 44.

[0063] like Figure 8 and 9As shown, the right side stop mechanism B includes a right stop roller double stroke cylinder 29, a right stop roller double stroke cylinder ear seat 30, a right stop roller double stroke cylinder mounting seat 31, a right cylinder fish eye joint 32, a right stop roller double stroke cylinder rotating shaft cotter pin 33, a right stop roller double stroke cylinder rotating shaft 34, a right stop roller rotating shaft oil-free bearing 35, a third round nut 36, a stop washer 37 for the third round nut, a right stop roller mounting seat 43 and a right stop roller assembly; the left and right side position relationship of the right side stop mechanism B is the same as the left and right side position relationship of the adjustment base D;

[0064] The lower end face of the right-side stop roller assembly is fixedly mounted on the upper surface of the right-side stop roller mounting seat 43. A right mounting seat shaft through hole is opened in the middle of the right end of the right-side stop roller mounting seat 43, and the axis line is perpendicular to the sliding direction of the stop roller mounting seat slider. The other end of the right-side stop roller shaft 22 of the adjustment base D extends into the right mounting seat shaft through hole and is fixedly connected to the right-side stop roller mounting seat 43; a right-side stop roller shaft oil-free bearing 35 is coaxially fixedly mounted at each end of the right mounting seat shaft through hole, and the other end of the right-side stop roller shaft 22 is coaxially fixedly mounted on a right-side stop roller shaft oil-free bearing 35 through a third round nut 36 and a third round nut stopping washer 37. The first round nut 19 and the first round nut stopping washer 20, the third round nut 36 and the third round nut stopping washer 37, these two sets of round nuts and round nut stopping washers interact with each other to achieve the axial positioning of the right-side stop roller shaft 22, thereby achieving the axial positioning of the right-side stop roller mounting seat 43. At the same time, the middle part of the right stop roller shaft 22 is coaxially fixedly mounted on another right stop roller shaft oil-free bearing 35, and the other side of the first stopper 21 is connected to another right stop roller shaft oil-free bearing 35;

[0065] The right side stop roller double stroke cylinder seat 31 is fixedly mounted on the adjustment base D at the lower side of the right side stop roller mounting seat 43, the right side stop roller double stroke cylinder ear seat 30 is mounted on the lower bottom surface of the right side stop roller double stroke cylinder seat 31, and the ear shaft of the right side stop roller double stroke cylinder 29 is fixedly penetrated and mounted in the inner hole of the right side stop roller double stroke cylinder ear seat 30;

[0066] A transmission arm extending along the lower right corner is fixedly provided at the lower right corner of the right-side stop roller mounting seat 43, and a transmission through hole is opened at the lower end of the transmission arm. The right-side stop roller double-stroke cylinder shaft 34 passes through a transmission through hole and one end of the right-side cylinder fisheye joint 32 to hinge the right-side cylinder fisheye joint 32 with the transmission arm, and an end face of one end of the right-side stop roller double-stroke cylinder shaft 34 passing through the right-side cylinder fisheye joint 32 is provided with a shoulder, and the other end of the right-side stop roller double-stroke cylinder shaft 34 passing through the transmission through hole is provided with a right cylinder shaft through hole whose axis is perpendicular to the axis of the right-side stop roller double-stroke cylinder shaft 34, and the left-side cylinder shaft cotter pin 48 passes through the right cylinder shaft through hole to realize the axial positioning of the right-side stop roller shaft 22; the other end of the right-side cylinder fisheye joint 32 is coaxially fixedly connected to the output shaft of the right-side stop roller double-stroke cylinder 29.

[0067] As Figure 12 and 13 shown, the balance buffer mechanism C includes a buffer cylinder 64, a buffer cylinder ear seat 65, a buffer cylinder connection seat 60, a buffer cylinder rotating shaft 62, a buffer cylinder rotating shaft end retaining ring 61, and a buffer cylinder Y-joint 63;

[0068] Two trunnions provided in the middle of the buffer cylinder 64 are embedded in the buffer cylinder ear seat 65. The upper end surface of the buffer cylinder ear seat 65 is fixedly connected to the lower end surface of the left side roller mounting seat 50 by bolts. The output shaft of the buffer cylinder rotating shaft 62 is coaxially and fixedly connected to one end of the buffer cylinder Y-joint 63. The upper end surface of the buffer cylinder connection seat 60 is fixedly connected to the lower end surface of the left side roller assembly mounting seat 55 of the left side blocking mechanism A. A first buffer cylinder connection seat through hole with an axis perpendicular to the axis of the buffer cylinder 64 and a second buffer cylinder connection seat through hole with an axis coinciding with the axis of the buffer cylinder 64 are formed in the middle of the buffer cylinder connection seat 60. The other end of the buffer cylinder Y-joint 63 extends into the second buffer cylinder connection seat through hole of the buffer cylinder connection seat 60, and the buffer cylinder Y-joint 63 is fixedly connected to the buffer cylinder connection seat 60 by passing the buffer cylinder rotating shaft 62 through the first buffer cylinder connection seat through hole and the end of the other end of the buffer cylinder Y-joint 63. The buffer cylinder rotating shaft end retaining rings 61 are installed at both ends of the buffer cylinder rotating shaft 62 to achieve axial limit of the buffer cylinder rotating shaft 62.

[0069] As Figure 10 shown, the roller assembly includes a left side roller assembly and a right side roller assembly; the left side roller assembly and the right side roller assembly have the same structure;

[0070] The left side roller assembly includes a left side roller drum 56, a left side roller drum shaft 57, a left side roller spherical roller bearing 58, a left side roller bearing seal cover 59, and a left side roller assembly mounting seat 55;

[0071] The left side roller assembly mounting seat 55 is fixedly connected to the slider of the linear guide pair 54 by bolts. The left side roller drum 56 is hollow. The left side roller drum shaft 57 coaxially passes through the middle of the left side roller drum 56, and both ends of the left side roller drum shaft 57 extend out of the left side roller drum 56 and are fixedly installed on one side of the left side roller assembly mounting seat 55. The ends of both ends of the left side roller drum shaft 57 are rectangular. After the ends of both ends of the left side roller drum shaft 57 are embedded in the rectangular holes on both sides of the left side roller assembly mounting seat 55, they are fixed with bolts;

[0072] Both ends of the left side roller drum 56 and the left side roller drum shaft 57 are each provided with a step. Along the end direction, a left side roller self-aligning roller bearing 58 and a left side roller bearing seal cover 59 are coaxially and fixedly installed at the steps at both ends of the left side roller drum 56 and the left side roller drum shaft 57 in sequence. One side of the left side roller self-aligning roller bearing 58 is connected to one side of the left side roller bearing seal cover 59, and the other side of the left side roller self-aligning roller bearing 58 is connected to the end faces of the left side roller drum shaft 57 and the left side roller drum 56. The other side of the left side roller bearing seal cover 59 serves as a part of the end face of the left side roller drum 56, realizing the axial positioning of the left side roller self-aligning roller bearing 58 and also adjusting the axial clearance of the left side roller self-aligning roller bearing 58.

[0073] The right side roller assembly includes a right side roller drum 39, a right side roller drum shaft 40, a right side roller self-aligning roller bearing 41, a right side roller bearing seal cover 42, and a right side roller assembly mounting seat 38;

[0074] The lower end face of the right side roller assembly mounting seat 38 is fixedly installed on the upper surface of the right side roller mounting seat 43. The right side roller drum 39 is hollow. The right side roller drum shaft 40 coaxially passes through the middle of the right side roller drum 39, and both ends of the right side roller drum shaft 40 extend out of the right side roller drum 39 and are fixedly installed on one side of the right side roller assembly mounting seat 38. The two end portions of the right side roller drum shaft 40 are rectangular. After the two end portions of the right side roller drum shaft 40 are embedded in the rectangular holes on both sides of the right side roller assembly mounting seat 38, they are fixed with bolts;

[0075] Both ends of the right side roller drum 39 and the right side roller drum shaft 40 are each provided with a step. Along the end direction, a right side roller self-aligning roller bearing 41 and a right side roller bearing seal cover 42 are coaxially and fixedly installed at the steps at both ends of the right side roller drum 39 and the right side roller drum shaft 40 in sequence. One side of the right side roller self-aligning roller bearing 41 is connected to one side of the right side roller bearing seal cover 42, and the other side of the right side roller self-aligning roller bearing 41 is connected to the end faces of the right side roller drum shaft 40 and the right side roller drum 39. The other side of the right side roller bearing seal cover 42 serves as a part of the end face of the right side roller drum 39, thereby realizing the axial positioning of the right side roller self-aligning roller bearing 41 and also adjusting the axial clearance of the right side roller self-aligning roller bearing 41.

[0076] The working principle of the present invention:

[0077] When the handwheel 1 rotates clockwise, the right-handed moving slider 12 moves to the right, and at the same time, the left-handed moving slider 14 moves to the left, increasing the distance between the left-side roller assembly and the right-side roller assembly; when the handwheel 1 rotates counterclockwise, the right-handed moving slider 12 moves to the left, and at the same time, the left-handed moving slider 14 moves to the right, decreasing the distance between the left-side roller assembly and the right-side roller assembly. According to the different sizes of the three-pipe bundle, rotating the handwheel 1 can adjust the spacing between the left-side roller assembly and the right-side roller assembly.

[0078] When the rodless cavity of the right-side roller double-acting cylinder 29 intakes air, the piston rod extends, driving the right-side roller mounting seat 43 to rotate around the right-side roller rotating shaft 22, so that the right-side roller assembly rises from the horizontal position to a position with an angle of 60° with the horizontal plane. When it is necessary to turn the three-pipe bundle on its side, the rodless cavity of the right-side roller double-acting cylinder 29 intakes air again, and the piston rod of the right-side roller double-acting cylinder 29 continues to extend to the second position, and the right-side roller mounting seat 43 continues to rotate around the right-side roller rotating shaft 22, turning the three-pipe bundle to the left to ensure that the three-pipe bundle can be smoothly turned to the left-side roller direction; when the rodless cavity of the right-side roller double-acting cylinder 29 intakes air, the piston rod retracts to the original position, driving the right-side roller mounting seat 43 to rotate in the reverse direction around the right-side roller rotating shaft 22, so that the right-side roller assembly is laid down from the second position to the horizontal position.

[0079] When the rodless cavity of the left-side roller cylinder 44 intakes air, the piston rod extends, driving the left-side roller mounting seat 50 to rotate around the left-side roller rotating shaft 25, so that the left-side roller assembly rises from the horizontal position to a position with an angle of 60° with the horizontal plane. When the rodless cavity of the left-side roller cylinder 44 intakes air, the piston rod retracts, driving the left-side roller mounting seat 50 to rotate in the reverse direction around the left-side roller rotating shaft 25, so that the left-side roller assembly is laid down from the position with an angle of 60° with the horizontal plane to the horizontal position.

[0080] According to the actual use situation and requirements on-site, when the three-pipe bundle is packed, during the process of laying down the left-side roller assembly from the position with an angle of 60° with the horizontal plane to the horizontal position, there will be a sliding tendency between the three-pipe bundle and the left-side roller assembly. At this time, the buffer cylinder generates an opposite resistance to the three-pipe bundle, which can reduce the sliding of the three-pipe bundle; at the same time when the left-side roller assembly starts to be laid down from the position with an angle of 60° with the horizontal plane, after the right-side roller moves to the second position, the right-side roller assembly retracts to the horizontal position.

[0081] Such as Figure 14As shown, the original states of the left side block mechanism (A) and the right side block mechanism (B) are both in the horizontal position. When working, the left side block mechanism (A) and the right side block mechanism (B) are first raised from the horizontal position to a position with an angle of 60° with the horizontal plane. Then, the first steel pipe (i.e., the first layer) is placed in the angle formed by the left side block mechanism (A) and the right side block mechanism (B) by the pipe transport device, and then the second and third steel pipes (the second layer, two steel pipes are transported at the same time) are placed in the angle formed by the left side block mechanism (A) and the right side block mechanism (B). At this time, the three-tube bundle of three pipes forms an inverted triangle. After the three-tube bundle is packed or bundled, the left side block mechanism (A) is laid down, and the balance buffer mechanism (C) starts to work at the same time to realize the automatic rollover of the three-tube bundle. While the left side stop mechanism (A) begins to fall, the right side stop mechanism (B) continues to flip to the left to the second working position, ensuring that the three-tube bundle flips to the left. Finally, the left side stop mechanism (A) and the right side stop mechanism (B) both return to the horizontal position, and the entire work process is completed.

Claims

1. An automatic rollover device for three-tube bundles, Features: It includes a left side stop mechanism (A), a right side stop mechanism (B), a balancing buffer mechanism (C) and an adjusting base (D); the adjusting base (D) serves as the bottom of the automatic rollover device, the left side stop mechanism (A) is installed on one side of the adjusting base (D), the right side stop mechanism (B) is installed on the other side of the adjusting base (D), and the balancing buffer mechanism (C) is fixedly installed below the left side stop mechanism (A); The left side stop mechanism (A) comprises a left side stop roller cylinder (44), a left side stop roller cylinder ear seat (45), a left side stop roller cylinder seat (46), a left side stop roller cylinder fisheye joint (47), a left side stop roller cylinder shaft cotter pin (48), a left side stop roller cylinder shaft (49), a left side stop roller mounting seat (50), a linear guide pair (54) and a left side stop roller assembly; The guide rail is fixedly mounted on the upper surface of the left stop roller mounting seat (50), and four stop roller mounting seat sliders are evenly arranged at equal intervals and slidably mounted in the guide rail to form a linear guide rail pair (54). The stop roller mounting seat slider slides along the guide rail, and the lower end surface of the left stop roller assembly is fixedly connected to the upper end surfaces of the four stop roller mounting seat sliders respectively. The upper end surface of the left stop roller mounting seat (50) is provided with a strip-shaped long groove, and the balancing buffer mechanism (C) passes through the strip-shaped long groove and is fixedly connected to the lower end surface of the left stop roller assembly; a left mounting seat rotating shaft through hole with an axis perpendicular to the sliding direction of the stop roller mounting seat slider is provided in the middle of the right end of the left stop roller mounting seat (50), and the other end of the left stop roller rotating shaft (25) of the adjustment base (D) extends into the left mounting seat rotating shaft through hole and is fixedly connected to the left stop roller mounting seat (50); The adjustment base (D) at the lower side of the left stop roller mounting seat (50) is fixedly mounted with a left stop roller cylinder seat (46); the left stop roller cylinder ear seat (45) is mounted on the lower bottom surface of the left stop roller cylinder seat (46); and the ear shaft of the left stop roller cylinder (44) is fixedly installed through the inner hole of the left stop roller cylinder ear seat (45); A transmission arm extending along the lower right corner is fixedly provided at the lower right corner of the left stop roller mounting seat (50), and a transmission through hole is provided at the lower end of the transmission arm. The left stop roller cylinder shaft (49) passes through the transmission through hole and one end of the left stop roller cylinder fisheye joint (47) to hinge the left stop roller cylinder fisheye joint (47) and the transmission arm. An end face of the left stop roller cylinder shaft (49) passing through the left stop roller cylinder fisheye joint (47) is provided with a shaft shoulder. The other end of the left stop roller cylinder shaft (49) passing through the transmission through hole is provided with a left cylinder shaft through hole whose axis is perpendicular to the axis of the left stop roller cylinder shaft (49), and the left stop roller cylinder shaft cotter pin (48) passes through the left cylinder shaft through hole. The other end of the left stop roller cylinder fisheye joint (47) is coaxially fixedly connected to the output shaft of the left stop roller cylinder (44). The balancing buffer mechanism (C) comprises a buffer cylinder (64), a buffer cylinder ear seat (65), a buffer cylinder connecting seat (60), a buffer cylinder pin shaft (62), and a buffer cylinder Y-type joint (63); Two trunnions on the middle part of the buffer cylinder (64) are embedded in the buffer cylinder trunnion seat (65). The upper end surface of the buffer cylinder trunnion seat (65) is fixedly connected to the lower end surface of the left side roller mounting seat (50) by bolts. The output shaft of the buffer cylinder is coaxially and fixedly connected to one end of the buffer cylinder Y-joint (63). The upper end surface of the buffer cylinder connecting seat (60) is fixedly connected to the lower end surface of the left side roller assembly of the left side blocking mechanism (A). The other end of the buffer cylinder Y-joint (63) extends into the buffer cylinder connecting seat (60), and the buffer cylinder Y-joint (63) is fixedly connected to the buffer cylinder connecting seat (60) by a buffer cylinder pin shaft (62). The original states of the left side blocking mechanism (A) and the right side blocking mechanism (B) are both in the horizontal position. During operation, first, the left side blocking mechanism (A) and the right side blocking mechanism (B) are lifted from the horizontal position to a position at an angle of 60° with the horizontal plane. Then, the first steel pipe is first placed within the included angle formed by the left side blocking mechanism (A) and the right side blocking mechanism (B) by the pipe transporting device, and then the second and third steel pipes are placed within the included angle formed by the left side blocking mechanism (A) and the right side blocking mechanism (B). At this time, the three-pipe bundle of the three pipes forms an inverted triangle. After the three-pipe bundle is strapped, the left side blocking mechanism (A) is laid down, and at the same time, the balance buffer mechanism (C) starts to work to achieve the automatic side-turning of the three-pipe bundle. At the same time when the left side blocking mechanism (A) starts to be laid down, the right side blocking mechanism (B) continues to turn to the left to the second working position to ensure that the three-pipe bundle turns over to the left. Finally, both the left side blocking mechanism (A) and the right side blocking mechanism (B) return to the horizontal position.

2. An automatic side-turning device for a three-pipe bundle according to claim 1, characterized in that: The adjustment base (D) includes a handwheel (1), an end shaft retaining ring (2), a right vertical plate (8), a right-handed lead screw (10), a right-handed lead screw nut (11), a right-handed moving slider (12), a lead screw connecting sleeve (13), a left-handed moving slider (14), a left-handed lead screw nut (15), a left-handed lead screw (16), a left vertical plate (17), a base (18), a bearing assembly, a first retaining piece (21), a right side roller rotating shaft (22), a left side roller rotating shaft (25), a second retaining piece (26), a chute block (27), a copper plate (28). The base (18) is fixedly installed on the ground. The chute block (27) is fixedly installed on the upper surface of the base (18). A left vertical plate (17) is fixedly installed on one end face of the chute block (27) by bolts. A right vertical plate (8) is fixedly installed on the other end face of the chute block (27) by bolts. The side where the left vertical plate (17) is installed is the left side of the adjustment base (D), and the side where the right vertical plate (8) is installed is the right side of the adjustment base (D). A horizontal through chute is formed in the middle of the chute block (27). A left-handed moving slider (14) and a right-handed moving slider (12) are slidably installed in the through chute from left to right in sequence. A left-handed lead screw (16) and a right-handed lead screw (10) are movably sleeved on the left-handed moving slider (14) and the right-handed moving slider (12) respectively through a left-handed lead screw nut (15) and a right-handed lead screw nut (11); on the upper and lower end faces of the left-handed moving slider (14) and the right-handed moving slider (12), a copper plate (28) is installed on each of the left and right sides along the direction of the left-handed lead screw (16). Each copper plate (28) is connected to the upper or lower end face of the through chute, so that the left-handed moving slider (14) and the right-handed moving slider (12) move under the limit and guidance of the copper plate (28). The left end of the left-handed lead screw (16) extends out of the left-handed moving slider (14). The right end of the left-handed lead screw (16) is coaxially and fixedly connected to the left end of the right-handed lead screw (10) through a lead screw connecting sleeve (13); a right vertical plate through hole is formed in the right vertical plate (8), and a bearing assembly is fixedly installed in the right vertical plate through hole. The right end of the right-handed lead screw (10) extends out of the right-handed moving slider (12) and is coaxially movably connected to the bearing assembly, and a hand wheel (1) is coaxially sleeved at the end. An axial end retaining ring (2) is coaxially and fixedly installed on the right end face of the right-handed lead screw (10) by bolts. A left rotation shaft through hole with an axis perpendicular to the axis of the left-handed lead screw (16) is formed in the left-handed moving slider (14). One end of the left side roller rotation shaft (25) extends into the left rotation shaft through hole and is coaxially and movably installed with the left-handed moving slider (14). The other end of the left side roller rotation shaft (25) is connected to the left side side stop mechanism (A); a second stop piece (26) is movably sleeved in the middle of the left side roller rotation shaft (25). One side of the second stop piece (26) is connected to the shaft shoulder, and the other side of the second stop piece (26) is connected to the left side side stop mechanism (A). The right-hand movable slider (12) is provided with a right-hand shaft through hole whose axis is perpendicular to the axis of the right-hand screw rod (10); one end of the right-hand stop roller shaft (22) extends into the right-hand shaft through hole and is coaxially movably installed with the right-hand movable slider (12); the other end of the right-hand stop roller shaft (22) is connected to the right-hand side stop mechanism (B); a first stopper (21) is movably sleeved in the middle of the right-hand stop roller shaft (22); one side of the first stopper (21) is connected to the shaft shoulder; the other side of the first stopper (21) is connected to the right-hand side stop mechanism (B); the hand wheel (1) rotates circumferentially to drive the right-hand screw rod (10) and the left-hand screw rod (16) to rotate, thereby driving the left-hand movable slider (14) and the right-hand movable slider (12) to move closer to or away from each other, thereby adjusting the distance between the left-hand side stop mechanism (A) and the right-hand side stop mechanism (B).

3. The automatic rollover device for three-tube bundle according to claim 1, Features: The right side stop mechanism (B) comprises a right stop roller double-stroke cylinder (29), a right stop roller double-stroke cylinder ear seat (30), a right stop roller double-stroke cylinder mounting seat (31), a right stop roller double-stroke cylinder fisheye joint (32), a right stop roller double-stroke cylinder rotating shaft cotter pin (33), a right stop roller double-stroke cylinder rotating shaft (34), a right stop roller mounting seat (43) and a right stop roller assembly; The lower end surface of the right stop roller assembly is fixedly mounted on the upper surface of the right stop roller mounting seat (43); a right mounting seat rotating shaft through hole is opened in the middle of the right end of the right stop roller mounting seat (43); the other end of the right stop roller rotating shaft (22) of the adjustment base (D) extends into the right mounting seat rotating shaft through hole and is fixedly connected to the right stop roller mounting seat (43); A right side stop roller double stroke cylinder mounting seat (31) is fixedly mounted on the adjustment base (D) at the lower side of the right side stop roller mounting seat (43); a right side stop roller double stroke cylinder ear seat (30) is mounted on the lower bottom surface of the right side stop roller double stroke cylinder mounting seat (31); and a ear shaft of the right side stop roller double stroke cylinder (29) is fixedly installed through the inner hole of the right side stop roller double stroke cylinder ear seat (30); A transmission arm extending along the lower right corner is fixedly provided at the lower right corner of the right stop roller mounting seat (43), and a transmission through hole is opened at the lower end of the transmission arm. The right stop roller double-stroke cylinder shaft (34) passes through the transmission through hole and one end of the right stop roller double-stroke cylinder fisheye joint (32) to hinge the right stop roller double-stroke cylinder fisheye joint (32) and the transmission arm. An end face of the right stop roller double-stroke cylinder shaft (34) passing through the right stop roller double-stroke cylinder fisheye joint (32) is provided with a shaft shoulder. The other end of the right stop roller double-stroke cylinder shaft (34) passing through the transmission through hole is provided with a right cylinder shaft through hole whose axis is perpendicular to the axis of the right stop roller double-stroke cylinder shaft (34), and the right stop roller double-stroke cylinder shaft cotter pin (33) passes through the right cylinder shaft through hole. The other end of the right stop roller double-stroke cylinder fisheye joint (32) is coaxially fixedly connected to the output shaft of the right stop roller double-stroke cylinder (29).

4. The automatic rollover device for three-tube bundle according to claim 2, It is characterized in that: The right end of the left-handed lead screw (16) is coaxially and fixedly connected to the left end of the right-handed lead screw (10) through a lead screw connecting sleeve (13). Specifically: A right-handed slide block groove is formed in the middle of the left end face of the right-handed moving slide block (12), and a left-handed slide block groove is formed in the middle of the right end face of the left-handed moving slide block (14). A lead screw connecting sleeve (13) is installed in the left-handed slide block groove and the right-handed slide block groove. Through holes are formed in both ends of the lead screw connecting sleeve (13) along the radial direction. A right-handed through hole is formed in the left end of the right-handed lead screw (10) along the radial direction, and the left end of the right-handed lead screw (10) extends into the right-handed slide block groove. A left-handed through hole is formed in the right end of the left-handed lead screw (16) along the radial direction, and the right end of the left-handed lead screw (16) extends into the left-handed slide block groove. The right end of the left-handed lead screw (16) is coaxially and fixedly installed at one end of the lead screw connecting sleeve (13) through a first precision reamed hole bolt. The first precision reamed hole bolt passes through a through hole of the connecting sleeve and the left-handed through hole and is fixedly connected to a nut, and at the same time, a matching spring washer is used to prevent loosening. The left end of the right-handed lead screw (10) is coaxially and fixedly installed at the other end of the lead screw connecting sleeve (13) through a second precision reamed hole bolt. The second precision reamed hole bolt passes through the other through hole of the connecting sleeve and the right-handed through hole and is fixedly connected to a nut, and at the same time, a matching spring washer is used to prevent loosening.

5. An automatic side-turning device for a three-tube bundle according to claim 2, It is characterized in that: The bearing assembly includes an inner retaining ring (4), a bearing end cover (5), a first deep groove ball bearing (6), a second deep groove ball bearing, an outer retaining ring (7) and a bearing seat (9); The outer circumferential surface of the bearing seat (9) is stepped. The smaller-diameter end of the bearing seat (9) extends into the through hole of the right vertical plate. The right end face of the larger-diameter end of the bearing seat (9) is coaxially and fixedly installed with a bearing end cover (5) through bolts. The bolts sequentially pass through the bearing end cover (5), the right end face of the larger-diameter end of the bearing seat (9) and are fixedly connected to the right end face of the right vertical plate (8); the through hole of the bearing seat (9) is coaxially installed with a second deep groove ball bearing, an outer retaining ring (7), a first deep groove ball bearing (6) and an inner retaining ring (4) from left to right. The second deep groove ball bearing, the outer retaining ring (7), the first deep groove ball bearing (6), the inner retaining ring (4) and the bearing end cover (5) are coaxially installed with the right end of the right-handed lead screw (10); both end faces of the outer retaining ring (7) are respectively connected to one end of the first deep groove ball bearing (6) and one end of the second deep groove ball bearing. The other end of the first deep groove ball bearing (6) is respectively connected to the bearing end cover (5) and the inner retaining ring (4). The other end of the second deep groove ball bearing is connected to the right end face of the smaller-diameter end of the bearing seat (9). The bearing end cover (5) is coaxially and movably installed with the right end of the right-handed lead screw (10) through the inner retaining ring (4).

6. An automatic side-turning device for a three-tube bundle according to claim 1, It is characterized in that: The left side roller assembly includes a left side roller drum (56), a left side roller drum shaft (57), a left side roller spherical roller bearing (58), a left side roller bearing seal cover (59) and a left side roller assembly mounting seat (55); The left side roller retaining component mounting seat (55) is fixedly connected to the slider of the linear guide pair (54) by bolts. The left side roller retaining drum (56) is hollow. The left side roller retaining drum shaft (57) coaxially passes through the middle of the left side roller retaining drum (56), and both ends of the left side roller retaining drum shaft (57) extend out of the left side roller retaining drum (56) and are fixedly installed on the left side roller retaining component mounting seat (55). Steps are respectively arranged on both end faces of the left side roller retaining drum (56) and the left side roller retaining drum shaft (57). Along the end direction, a left side roller aligning roller bearing (58) and a left side roller bearing seal cover (59) are successively and coaxially fixedly installed at the steps at both ends of the left side roller retaining drum (56) and the left side roller retaining drum shaft (57).

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