CN111623018A - Bidirectional telescopic locking device - Google Patents
Bidirectional telescopic locking device Download PDFInfo
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- CN111623018A CN111623018A CN202010359334.3A CN202010359334A CN111623018A CN 111623018 A CN111623018 A CN 111623018A CN 202010359334 A CN202010359334 A CN 202010359334A CN 111623018 A CN111623018 A CN 111623018A
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- bevel gear
- screw rod
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- sleeve
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 15
- 230000033001 locomotion Effects 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/02—Bolts or sleeves for positioning of machine parts, e.g. notched taper pins, fitting pins, sleeves, eccentric positioning rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
- F16B21/12—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with locking-pins or split-pins thrust into holes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
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Abstract
A bidirectional telescopic locking device comprises a main bevel gear, a first slave bevel gear, a second slave bevel gear, a first telescopic assembly and a second telescopic assembly, wherein the first slave bevel gear and the second slave bevel gear are symmetrically arranged on two sides of the main bevel gear and are meshed with the main bevel gear; the first telescopic component is connected with the first slave bevel gear, and when the first slave bevel gear rotates, the first telescopic component performs telescopic movement along the axial direction of the first slave bevel gear; the second telescopic component is connected with the second slave bevel gear, and when the second slave bevel gear rotates, the second telescopic component performs telescopic movement along the axial direction of the second slave bevel gear; the first telescopic assembly and the second telescopic assembly are symmetrically arranged on two sides of the main bevel gear, and when the main bevel gear is driven to rotate, the first telescopic assembly and the second telescopic assembly are driven by the first slave bevel gear and the second slave bevel gear to synchronously extend and retract. The two-side lock pin of the bidirectional telescopic locking device can be synchronously telescopic, can keep the locking and unlocking states, and has strong reliability.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a mechanical device, in particular to a bidirectional telescopic locking device.
[ background of the invention ]
Locking devices that utilize telescoping of a locking pin for locking and unlocking are widely used in various types of mechanical equipment and aircraft. The existing telescopic locking device usually adopts one-way telescopic and has limited application places. In addition, the existing telescopic locking device is relatively open, has poor reliability and is not beneficial to being used in environments with higher requirements such as oceans and aviation. On the other hand, the existing telescopic locking device has a large structure, and requires a large installation space, so that the application space is limited. Thus, there is still a need for further improvements in existing telescopic locking devices.
[ summary of the invention ]
The present invention is directed to solve the above problems, and provides a bidirectional retractable locking device with compact structure and high reliability.
In order to achieve the above object, the present invention provides a bidirectional telescopic locking device, which comprises a main bevel gear, a first slave bevel gear and a second slave bevel gear, a first telescopic assembly and a second telescopic assembly, wherein the first slave bevel gear and the second slave bevel gear are symmetrically arranged on two sides of the main bevel gear and are respectively engaged with the main bevel gear; the first telescopic assembly is connected with the first slave bevel gear, and when the first slave bevel gear rotates, the first telescopic assembly performs telescopic movement along the axial direction of the first slave bevel gear; the second telescopic assembly is connected with the second slave bevel gear, and when the second slave bevel gear rotates, the second telescopic assembly performs telescopic movement along the axial direction of the second slave bevel gear; the first telescopic assembly and the second telescopic assembly are symmetrically arranged on two sides of the main bevel gear, and when the main bevel gear is driven to rotate, the first telescopic assembly and the second telescopic assembly are driven by the first slave bevel gear and the second slave bevel gear to synchronously extend and retract.
Further, the first telescopic assembly comprises a first lead screw mechanism and a first lock pin, the first lead screw mechanism comprises a first lead screw and a first lead screw nut, the first lead screw nut is sleeved on the first lead screw, one end of the first lead screw is fixedly connected with the first secondary bevel gear to form a fixed end, and the first lock pin is sleeved on the first lead screw and is fixedly connected with the first lead screw nut to move along the axial direction of the first lead screw; the second telescopic assembly comprises a second lead screw mechanism and a second lock pin, the second lead screw mechanism comprises a second lead screw and a second lead screw nut, the second lead screw nut is sleeved on the second lead screw, one end of the second lead screw is fixedly connected with the second driven bevel gear to form a fixed end, and the second lock pin is sleeved on the second lead screw and is fixedly connected with the second lead screw nut to move along the axial direction of the second lead screw.
Further, it still includes base, first sleeve and second sleeve, the base is the cavity box form, first sleeve and second sleeve symmetry fixed connection respectively in outside the relative both sides of base, first sleeve and second sleeve are the open long tube-shape in both ends respectively.
Further, the main bevel gear is rotatably connected to the base, and the axial direction of the main bevel gear is perpendicular to the axial direction of the first sleeve and the second sleeve; the first slave bevel gear and the second slave bevel gear are arranged in the base; the first telescopic assembly is sleeved in the first sleeve in a limiting manner, the fixed end of a first screw rod of the first telescopic assembly penetrates through the base and is fixedly connected with a first secondary bevel gear arranged in the base, and a first lock pin of the first telescopic assembly can extend out of the end part of the first sleeve; the second telescopic assembly is sleeved in the second sleeve in a limiting mode, the fixed end of a second screw rod of the second telescopic assembly penetrates through the base and is fixedly connected with a second slave bevel gear arranged in the base, and a second lock pin of the second telescopic assembly can extend out of the end portion of the second sleeve.
Further, the main bevel gear comprises a main bevel gear part and a main shaft part, wherein the main bevel gear part is positioned in the base and is meshed with the first slave bevel gear and the second slave bevel gear respectively; the main shaft part extends from the inside of the base to the outside of the base and is in rotating connection with the base.
Further, a driving block is sleeved on the main shaft portion of the main bevel gear, and when the driving block is driven, the main bevel gear portion of the main bevel gear rotates.
Furthermore, the base is provided with a first quick-release pin hole, the driving block is provided with a second quick-release pin hole, when the driving block is rotated to the position that the second quick-release pin hole is opposite to the first quick-release pin hole, quick-release pins can be inserted into the first quick-release pin hole and the second quick-release pin hole to lock the driving block (so that the first telescopic assembly and the second telescopic assembly cannot perform telescopic motion, and when the quick-release pins are pulled out from the first quick-release pin hole and the second quick-release pin hole, the driving block can be unlocked to drive the first telescopic assembly and the second telescopic assembly to synchronously extend and retract.
Furthermore, the main shaft part comprises a supporting seat connecting part, a driving block connecting part and a bolt connecting part which are integrally formed, and the supporting seat connecting part is cylindrical and is rotatably connected with the base; the driving block connecting part is square and is inserted with the driving block; the bolt connecting part is sleeved with a third fixing part, a third pin hole is formed in the bolt connecting part, a third bolt hole is formed in the third fixing part, and a detachable third bolt is inserted into the third pin hole and the third bolt hole.
Further, the first lock pin comprises a first lock pin main body part, a first connecting part and a first limiting part which are integrally formed; the first lock pin main body part is in a long cylinder shape and is sleeved outside the first screw rod; the first connecting part is formed on the end part of the first lock pin main body part and is fixedly connected with the first lead screw nut through a fastener; the first limiting part is formed on the outer wall of the first lock pin main body part in a protruding mode, and the first limiting part is attached to the inner wall of the first sleeve; the second lock pin comprises a second lock pin main body part, a second connecting part and a second limiting part which are integrally formed; the second lock pin main body part is in a long cylinder shape and is sleeved outside the second screw rod; the second connecting part is formed on the end part of the second lock pin main body part and is fixedly connected with the second lead screw nut through a fastener; the second limiting part is formed on the outer wall of the second lock pin main body part in a protruding mode, and the second limiting part is attached to the inner wall of the second sleeve.
Further, the first screw rod comprises a first threaded part and a first connecting shaft part, and the first connecting shaft part penetrates through the base to extend into the base and is in rotating connection with the base; the second screw rod comprises a second threaded part and a second connecting shaft part, and the second connecting shaft part penetrates through the base to extend into the base and is in rotary connection with the base; the first lead screw nut is sleeved on the first thread part and can move along the axial direction of the first thread part; the second screw rod nut is sleeved on the second thread part and can move along the axial direction of the second thread part; the first driven bevel gear is fixedly connected to the first connecting shaft part; the second slave bevel gear is fixedly connected to the second connecting shaft portion.
The present invention advantageously contributes to effectively solving the above-mentioned problems. The two-side lock pin of the bidirectional telescopic locking device can be simultaneously extended or retracted, and can keep the locking and unlocking states, so that the reliability is high. In addition, the bidirectional telescopic locking device has the advantages of compact structure, small occupied space, relatively closed structure and strong environmental adaptability, and can be used in various severe environments. The bidirectional telescopic locking device also has the characteristics of simple transmission and convenient maintenance, has strong practicability and is suitable for being widely popularized.
[ description of the drawings ]
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an exploded view of the overall structure of the present invention.
Fig. 3 is an assembled cross-sectional view of the present invention.
Fig. 4 is a schematic structural view of the support seat.
Fig. 5 is a schematic structural diagram of a driving block.
Fig. 6 is a schematic structural view of the base.
Fig. 7 is a schematic view of the structure of the first lock pin or the second lock pin.
Fig. 8 is a cross-sectional view of the first locking pin or the second locking pin.
Fig. 9 is a schematic structural diagram of the first screw mechanism or the second screw mechanism and the first slave bevel gear or the second slave bevel gear.
Fig. 10 is a schematic view of the structure of the first sleeve or the second sleeve.
Fig. 11 is a cross-sectional view of the first sleeve or the second sleeve.
FIG. 12 is a schematic view of the construction of the main bevel gear.
Fig. 13 is a schematic structural diagram of the first fixing member, the second fixing member, or the third fixing member.
The attached drawings are as follows:
first slave bevel gear 11: a first center hole 111;
second slave bevel gear 12: a second center hole 121;
a first telescoping assembly 30;
a first screw mechanism 31, a first screw 311, a first screw section 3111, a first connecting shaft section 3112, a first base connecting section 31121, a first slave bevel gear connecting section 31122, a first fixing section 31123, a first pin hole 31124, a first screw nut 312;
the first lock pin 32, the first stroke hole 321, the first lock pin main body 322, the first connecting part 323, and the first stopper 324;
a second telescoping assembly 40;
a second screw mechanism 41, a second screw 411, a second screw portion 4111, a second connecting shaft portion 4112, a second base connecting portion 41121, a second slave bevel gear connecting portion 41122, a second fixing portion 41123, a second pin hole 41124, and a second screw nut 412;
a second lock pin 42, a second stroke hole 421, a second lock pin main body 422, a second connecting portion 423, and a second stopper portion 424;
a first sleeve 50, a first grease nipple 51;
a second sleeve 60, a second grease nipple 61;
a driving block 70, a second central shaft hole 71 and a second quick-release pin hole 72;
a first bolt 82, a second bolt 83, a third bolt 88;
a first support ring 84, a first retainer ring 85, a second support ring 86, and a second retainer ring 87;
a first fixing piece 91, a first pin hole 911;
a second fixing piece 92, a second latch hole 921;
a third fixing member 93, a third latch hole 931;
a bushing arrangement 100.
[ detailed description ] embodiments
The following examples are further illustrative and supplementary to the present invention and do not limit the present invention in any way.
As shown in fig. 1 to 13, the bidirectional telescopic locking apparatus of the present invention includes a main bevel gear 13, a first slave bevel gear 11, a second slave bevel gear 12, a first telescopic assembly 30 and a second telescopic assembly 40; further, it may also include a base 20, a first sleeve 50, a second sleeve 60, a drive block 70, and the like. The main bevel gear 13 is used for driving the first slave bevel gear 11 and the second slave bevel gear 12 to synchronously rotate, the rotation of the first slave bevel gear 11 can be converted into the linear motion of the first telescopic assembly 30, and the rotation of the second slave bevel gear 12 can be converted into the linear motion of the second telescopic assembly 40, so that the first telescopic assembly 30 and the second telescopic assembly 40 can be driven to synchronously extend and retract through the main bevel gear 13.
As shown in fig. 1 to 3, the first telescopic assembly 30 includes a first screw mechanism 31 and a first lock pin 32. The first lead screw mechanism 31 includes a first lead screw 311 and a first lead screw nut 312. The first lead screw nut 312 is sleeved on the first lead screw 311, and one end of the first lead screw 311 is fixedly connected with the first slave bevel gear 11 to form a fixed end. The first lock pin 32 is sleeved on the first lead screw 311 and fixedly connected with the first lead screw nut 312 so as to be capable of moving along the axial direction of the first lead screw 311. When the first slave bevel gear 11 rotates, the first lead screw 311 rotates synchronously with the first slave bevel gear 11, so that the first lead screw nut 312 moves along the direction of the first lead screw 311, and further drives the first lock pin 32 to move along the axial direction of the first lead screw 311, so that the rotation of the first slave bevel gear 11 can be converted into the linear movement of the first telescopic assembly 30.
As shown in fig. 1 to 3, the second telescopic assembly 40 includes a second screw mechanism 41 and a second lock pin 42. The second lead screw mechanism 41 includes a second lead screw 411 and a second lead screw nut 412. The second lead screw nut 412 is sleeved on the second lead screw 411, and one end of the second lead screw 411 is fixedly connected with the second slave bevel gear 12 to form a fixed end. The second lock pin 42 is sleeved on the second lead screw 411 and is fixedly connected with the second lead screw nut 412 so as to be capable of moving along the axial direction of the second lead screw 411. When the second slave bevel gear 12 rotates, the second lead screw 411 rotates synchronously with the second slave bevel gear 12, so that the second lead screw nut 412 moves along the axial direction of the second lead screw 411, and further drives the second lock pin 42 to move along the axial direction of the second lead screw 411, so that the rotation of the second slave bevel gear 12 is converted into the linear movement of the second telescopic assembly 40.
As shown in fig. 1 to 3, the first sleeve 50 is used for ensuring the linear motion of the first telescopic assembly 30, is sleeved outside the first telescopic assembly 30, is in a long cylinder shape with two open ends, and the first lock pin 32 can extend out of the end of the first sleeve 50.
As shown in fig. 1 to 3, the second sleeve 60 is used for ensuring the linear motion of the second telescopic assembly 40, is sleeved outside the second telescopic assembly 40, is in a long cylinder shape with two open ends, and the second lock pin 42 can extend out of the end of the second sleeve 60.
As shown in fig. 1 to 3, the first sleeve 50 and the second sleeve 60 are both fixedly disposed on the base 20, symmetrically distributed outside two opposite sides of the base 20, and have an axial direction perpendicular to the axial direction of the main bevel gear 13 and parallel to the axial directions of the first and second slave bevel gears 11 and 12.
As shown in fig. 1-3, the base 20 is used to carry the first sleeve 50, the second sleeve 60, the first telescopic assembly 30, the second telescopic assembly 40 and the main bevel gear 13. The base 20 has a hollow box shape. Wherein the main bevel gear 13 is rotatably connected to the base 20. The first sleeve 50 and the second sleeve 60 are fixed to the outer walls of the base 20 at opposite sides thereof. The first telescopic assembly 30 is disposed in the first sleeve 50 in a limiting manner, and a fixed end of a first lead screw 311 of the first telescopic assembly 30 penetrates through the base 20 to form a rotating connection with the base 20 and is fixedly connected with a first secondary bevel gear 11 disposed in the base 20. The second telescopic assembly 40 is disposed in the second sleeve 60 in a limiting manner, and a fixed end of a second lead screw 411 of the second telescopic assembly 40 penetrates through the base 20 to form a rotating connection with the base 20 and is fixedly connected with a second slave bevel gear 12 disposed in the base 20. The first and second slave bevel gears 11 and 12 are engaged with the main bevel gear 13 in the base 20, so that when the main bevel gear 13 is driven to rotate, the first and second slave bevel gears 11 and 12 can rotate synchronously, thereby driving the first and second telescopic assemblies 30 and 40 to perform synchronous telescopic movement, and the first and second sleeves 50 and 60 can further ensure that the first and second telescopic assemblies 30 and 40 move linearly.
In this embodiment, the parameters of the first slave bevel gear 11 and the second slave bevel gear 12 are consistent, so that the synchronous movement of the first retraction assembly 30 and the second retraction assembly 40 can be completely guaranteed.
When the telescopic motion is not needed, in order to keep a stable locking state, the driving block 70 is arranged on the main bevel gear 13, the second quick-release pin hole 72 is arranged on the driving block 70, and the first quick-release pin hole 232 is arranged on the base 20, when the locking is needed, the quick-release pin 81 is inserted into the first quick-release pin hole 232 and the second quick-release pin hole 72, so that the driving block 70 cannot rotate, the main bevel gear 13 cannot rotate, and the locking state can be kept and the telescopic motion cannot be carried out. When it is desired to unlock, the quick release pin 81 is removed and the drive block 70 is rotated to drive the main bevel gear 13 to rotate and thus drive the first retraction assembly 30 and the second retraction assembly 40 to retract in unison.
To describe the specific structure of the bidirectional telescopic locking device of the present invention in more detail, it is described in the following specific structure:
as shown in fig. 2, 3, and 6, the base 20 has a hollow box shape. In this embodiment, the base 20 has a rectangular box shape. In other embodiments, the base 20 may be provided in other shapes. More specifically, the base 20 includes a case 21, a cover 22, and a support base 23. The box body 21 is in a hollow box shape with two open ends. The cover plate 22 is provided at one open end of the case 21. The support base 23 is provided at the other open end of the case body 21. The box body 21, the cover plate 22 and the support seat 23 enclose a relatively closed box body 21 structure. The box body 21, the cover plate 22 and the support base 23 may be integrally formed or may be fixedly connected, and may be specifically disposed as required. In this embodiment, the box body 21, the cover plate 22 and the support base 23 are fixedly connected by fasteners.
To connect the first screw mechanism 31 and the second screw mechanism 41, a first connection hole (not shown) and a second connection hole 211 are respectively formed on opposite side walls of the case 21. The first connection hole and the second connection hole 211 are positioned opposite to each other.
As shown in fig. 2, 3 and 6, the supporting seat 23 is connected to an open end of the box body 21 for supporting and mounting the main bevel gear 13. The support base 23 is fixedly connected to the box body 21 by a fastener such as a screw or a bolt. As shown, a first central shaft hole 231 and a first quick release pin hole 232 are provided on the support base 23. The first center shaft hole 231 is parallel to the central axis of the first quick release pin hole 232, which are both perpendicular to the central axis of the first and second connection holes 211. The first central shaft hole 231 is a cylindrical stepped hole which supports the main bevel gear 13 and is rotatably connected to the main bevel gear 13. In order to conveniently insert the quick-release pin 81, the supporting seat 23 is provided with an integrally formed convex portion 233, the convex portion 233 protrudes out of the box body 21, and the convex portion 233 is provided with the first quick-release pin hole 232. The first quick release pin hole 232 can be sized as desired.
As shown in fig. 1 to 3, the first sleeve 50 and the second sleeve 60 are symmetrically and fixedly connected to the outside of two opposite sides of the box 21. One end of the first sleeve 50 may be fixed to one side wall of the box 21 by a known fixing method, and the inner cavity of the first sleeve 50 is opposite to the first connection hole. One end of the second sleeve 60 may be fixed to the second sidewall of the box 21 by a known fixing method, and the inner cavity of the second sleeve 60 is opposite to the second connection hole 211. In this embodiment, the first sleeve 50 and the second sleeve 60 are fixed to the box 21 by fasteners such as screws or bolts. For facilitating oil injection, as shown in fig. 10 and 11, a first oil injection nozzle 51 is provided on the first sleeve 50, and a second oil injection nozzle 61 is provided on the second sleeve 60. The first oil injection nozzle 51 and the second oil injection nozzle 61 are constructed in accordance with the known technology, and can be used for conveniently injecting lubricating oil into the inner cavities of the first sleeve 50 and the second sleeve 60.
The shape of the inner cavity of the first and second sleeves 50, 60 may be configured as desired to facilitate constraining the first and second lock pins 32, 42 from moving in a straight line.
As shown in fig. 2 and 3, the first lead screw mechanism 31 includes a first lead screw 311 and a first lead screw nut 312. As shown in fig. 2, 3 and 9, the first screw 311 includes a first thread portion 3111 and a first connecting shaft portion 3112 which are integrally formed. The first thread portion 3111 is matched with the first lead screw nut 312, the first lead screw nut 312 is sleeved on the first thread portion 3111, and when the first lead screw 311 rotates, the first lead screw nut 312 can move along the axial direction of the first thread portion 3111. In this embodiment, the length of the first threaded portion 3111 is smaller than the length of the first sleeve 50. The first coupling shaft portion 3112 extends into the base 20 through the first coupling hole. To facilitate connection with different parts, as shown in fig. 9, the first connecting shaft portion 3112 includes a first base connecting portion 31121, a first slave bevel gear connecting portion 31122, and a first fixing portion 31123 in this order. The first base connecting portion 31121 is configured to be sleeved at the first connecting hole, so as to facilitate rotation of the first lead screw 311. In this embodiment, the first base connection portion 31121 has a cylindrical shape. The first slave bevel gear connecting part 31122 is configured to connect the first slave bevel gear 11, so that the first lead screw 311 can rotate synchronously with the first slave bevel gear 11. In order to prevent the first slave bevel gear 11 from rotating circumferentially relative to the first lead screw 311, in this embodiment, the first slave bevel gear connecting part 31122 is provided with a square column shape, and in other embodiments, it may be provided with other structures that can avoid the rotation circumferentially, such as an oval shape, a single flat shape, a special shape, etc. The first fixing portion 31123 is configured to be connected to the first fixing member 91, so as to fix the first slave bevel gear 11 on the first lead screw 311. The first fixing portion 31123 may be formed in a cylindrical shape as needed, and a first pin hole 31124 is formed in a sidewall thereof. The first fixing unit 31123 is fitted with a first fixing unit 91, a first pin hole 911 is formed in a side wall of the first fixing unit 91, the first pin 82 is inserted into the first pin hole 911, and the first pin 82 is inserted into the first pin hole 31124, so that the first fixing unit 91 is fixed to the first fixing unit 31123, which is an end of the first screw 311, and the first slave bevel gear 11 is restricted to the first slave bevel gear connecting unit 31122 so as not to be axially movable. In other embodiments, the first fixing member 91 may be fixed to the first fixing portion 31123 in other manners to limit the axial displacement of the first slave bevel gear 11.
As shown in fig. 2, 3, and 9, the second lead screw mechanism 41 includes a second lead screw 411 and a second lead screw nut 412. The second lead screw 411 includes a second thread portion 4111 and a second connecting shaft portion 4112 which are integrally formed. The second threaded portion 4111 is matched with the second lead screw nut 412, and the second lead screw nut 412 is sleeved on the second threaded portion 4111. When the second lead screw 411 rotates, the second lead screw nut 412 can move along the axial direction of the second threaded portion 4111. In this embodiment, the length of the second threaded portion 4111 is smaller than the length of the second sleeve 60. The second connecting shaft portion 4112 extends into the base 20 through the second connecting hole 211. As shown in fig. 9, the second connecting shaft 4112 is divided into a second base connecting part 41121, a second slave bevel gear connecting part 41122, and a second fixing part 41123 in order to facilitate connection to different parts. The second base connecting portion 41121 is configured to be sleeved on the second connecting hole 211, so as to facilitate rotation of the second lead screw 411. In this embodiment, the second base connecting portion 41121 is cylindrical. The second slave bevel gear connecting part 41122 is used to connect the second slave bevel gear 12 so that the second lead screw 411 can rotate synchronously with the second slave bevel gear 12. In order to prevent the second slave bevel gear 12 from rotating circumferentially with respect to the second lead screw 411, in the present embodiment, the second slave bevel gear connecting portion 41122 is configured to be a square column, and in other embodiments, it may be configured to avoid rotating circumferentially, such as an oval shape, a single flat shape, a special shape, etc. The second fixing portion 41123 is used to connect the second fixing member 92 to fix the second slave bevel gear 12 to the second lead screw 411. The shape of the second fixing portion 41123 can be set as required, and in this embodiment, it is cylindrical, and a second pin hole 41124 is disposed on a sidewall thereof. The second fixing portion 41123 is sleeved with a second fixing member 92, a second pin hole 921 is formed in a side wall of the second fixing member 92, a second pin 83 is inserted into the second pin hole 921, and the second pin 83 is inserted into the second pin hole 41124, so that the second fixing member 92 is fixed to the second fixing portion 41123, which is an end of the second screw rod 411, and the second slave bevel gear 12 is restricted to the second slave bevel gear connecting portion 41122 and cannot move axially. In other embodiments, the second fixing member 92 may be fixed to the second fixing portion 41123 in other manners to limit the axial displacement of the second slave bevel gear 12.
As shown in fig. 2 and 3, the first slave bevel gear 11 is located in the base 20, and is fixedly connected to the first slave bevel gear connecting part 31122 of the first screw 311. For the convenience of connection, the first slave bevel gear 11 is provided with a first central hole 111 penetrating along the axial direction thereof, and the shape of the first central hole 111 matches the shape of the first slave bevel gear connecting part 31122, which in this embodiment is a square hole.
As shown in fig. 2 and 3, the second slave bevel gear 12 is located in the base 20, and is fixedly connected to the second slave bevel gear connecting part 41122 of the second lead screw 411. For the convenience of connection, a second center hole 121 is formed in the second slave bevel gear 12 to penetrate along the axial direction thereof, and the shape of the second center hole 121 matches the shape of the second slave bevel gear connecting part 41122, which is a square hole in this embodiment.
As shown in fig. 2 and 3, the first lock pin 32 is disposed in the first sleeve 50 and is fixedly connected to the first lead screw nut 312. As shown in fig. 7 and 8, the first lock pin 32 has a long rod shape, and is provided with a first stroke hole 321 extending in an axial direction thereof. The radial dimension of the first stroke hole 321 should be larger than the radial dimension of the first lead screw 311. Specifically, in this embodiment, the first latch 32 includes a first latch main body 322, a first connecting portion 323, and a first limiting portion 324, which are integrally formed. The first latch body 322 has an elongated tubular shape, the first connecting portion 323 is formed at an end of the first latch body 322, and the first stopper 324 is formed to protrude from an outer wall of the first latch body 322. The first stroke hole 321 is formed by extending an end surface of the first connecting portion 323 in a longitudinal direction of the first lock pin 32. In this embodiment, the first stroke hole 321 is a blind hole. In other embodiments, the first stroke hole 321 may be a through hole as needed. The first connecting portion 323 is used to be fixedly connected to the first lead screw nut 312, and is in the shape of an annular ledge, and has a screw hole thereon, which is fixedly connected to the first lead screw nut 312 through a fastening member. The first limiting portion 324 is used for limiting the first lock pin 32 to move linearly, the circumferential dimension of the first limiting portion is matched with the dimension of the inner wall of the first sleeve 50, and the first limiting portion is attached to the inner wall of the first sleeve 50 to ensure that the first lock pin 32 moves linearly along the first sleeve 50.
As shown in fig. 2 and 3, the second locking pin 42 is disposed in the second sleeve 60 and is fixedly connected to the second lead screw nut 412. As shown in fig. 7 and 8, the second lock pin 42 has a long rod shape, and is provided with a second stroke hole 421 extending in the axial direction thereof. The radial dimension of the second stroke hole 421 should be larger than the radial dimension of the second lead screw 411. Specifically, in this embodiment, the second lock pin 42 includes a second lock pin main body 422, a second connecting portion 423 and a second limiting portion 424 that are integrally formed. The second locking pin body 422 has a long cylindrical shape, the second connecting portion 423 is formed at an end of the second locking pin body 422, and the second stopper portion 424 is formed protruding from an outer wall of the second locking pin body 422. The second stroke hole 421 is formed by extending an end surface of the second connecting portion 423 in a longitudinal direction of the second lock pin 42. In this embodiment, the second stroke hole 421 is a blind hole. In other embodiments, the second stroke hole 421 can be a through hole as needed. The second connecting portion 423 is used for being fixedly connected to the second lead screw nut 412, and is in an annular convex edge shape, and a screw hole is formed in the second connecting portion, and is fixedly connected to the second lead screw nut 412 through a fastening member. The second limiting portion 424 is used for limiting the second lock pin 42 to move linearly, and the circumferential dimension of the second limiting portion is matched with the dimension of the inner wall of the second sleeve 60, and the second limiting portion is attached to the inner wall of the second sleeve 60 to ensure that the second lock pin 42 moves linearly along the second sleeve 60.
As shown in fig. 3 and 11, in order to close the ends of the first sleeve 50 and the second sleeve 60, a first supporting ring 84 and a first retaining ring 85 are arranged between the first sleeve 50 and the first retaining pin 32; a second support ring 86 and a second stop ring 87 are provided between the second sleeve 60 and the second locking pin 42. The outer rings of the first support ring 84 and the first retainer ring 85 are attached to the inner wall of the first sleeve 50, and the inner rings of the first support ring 84 and the first retainer ring 85 are attached to the outer wall of the first lock pin body 322. When the first lock pin 32 extends and contracts relative to the first sleeve 50, the first limiting portion 324 of the first lock pin 32 is limited in the first sleeve 50 and cannot move out of the first sleeve 50. The outer rings of the second support ring 86 and the second retainer 87 are attached to the inner wall of the second sleeve 60, and the inner rings of the second support ring 86 and the second retainer 87 are attached to the outer wall of the second lock pin main body 422. When the second lock pin 42 extends and contracts relative to the second sleeve 60, the second limiting portion 424 of the second lock pin 42 is limited in the second sleeve 60 and cannot move out of the second sleeve 60.
As shown in fig. 2 and 3, the main bevel gear 13 is rotatably disposed on a support base 23 of the base 20. As shown in fig. 2, 3, and 12, the main bevel gear 13 includes a main bevel gear portion 131 and a main shaft portion 132. In this embodiment, the main tapered teeth portion 131 is integrally formed with the main shaft portion 132. The main bevel part 131 is located in the base 20, and is engaged with the first and second slave bevel gears 11 and 12, respectively, so that transmission is possible. The axial direction of the master bevel gear part 131 is perpendicular to the axial direction of the first and second slave bevel gears 11 and 12. The main shaft portion 132 extends from the inside of the base 20 to the outside of the base 20. As shown in fig. 13, in order to connect different components, in this embodiment, the main shaft portion 132 sequentially includes a support seat connecting portion 1321, a driving block connecting portion 1322 and a latch connecting portion 1323. The support seat connecting portion 1321 is configured to be sleeved in the support seat 23 and is rotatably connected to the support seat 23. In this embodiment, the supporting seat connecting portion 1321 is shaped like a cylindrical step, and the size thereof matches with the size of the first central axis hole 231 of the supporting seat 23. The driving block connecting portion 1322 serves to sleeve the driving block 70 so that both can move in synchronization. To prevent the driving block 70 from rotating circumferentially relative to the main shaft 132, the driving block connecting portion 1322 has a square column shape in the present embodiment. In other embodiments, the driving block connecting portion 1322 may be formed in other shapes that prevent the driving block 70 from rotating circumferentially, such as a single flat shape, an oval shape, a special shape, etc. The plug-pin connecting portion 1323 is used to fixedly connect the third fixing member 93 so that the driving block 70 is restricted from axial displacement on the main shaft portion 132. In this embodiment, the plug-pin connecting portion 1323 is cylindrical, a third pin hole 1324 is formed in an outer wall of the plug-pin connecting portion 1323, the third fixing member 93 is sleeved on the plug-pin connecting portion 1323, a third plug-pin hole 931 is formed in the third fixing member 93, a third plug-pin 88 is arranged in the third plug-pin hole 931, and the third plug-pin 88 extends into the third pin hole 1324, so that the third fixing member 93 can be fixed to the plug-pin connecting portion 1323, which is an end portion of the main shaft portion 132, and the driving block 70 and the main shaft portion 132 are fixedly connected together and cannot move axially. In other embodiments, the third fixing member 93 may be fixed to the end of the main shaft 132 in other manners to limit the movement of the driving block 70.
As shown in fig. 2 and 3, the driving block 70 is connected to a driving block connecting portion 1322 of the main bevel gear 13. As shown in fig. 5, a second center shaft hole 71 and a second quick release pin hole 72 are provided in the driving block 70. The shape and size of the second central shaft hole 71 match those of the driving block connecting portion 1322, which is a square hole in this embodiment, and can prevent circumferential rotation. The second quick release pin hole 72 may be shaped as desired.
As shown in fig. 1 and 3, the quick release pin 81 can be inserted into the first quick release pin hole 232 and the second quick release pin hole 72 to perform a locking function. To prevent the quick release pin 81 from being lost, the quick release pin 81 may be attached to the base 20 by a cord 811. In order to facilitate the pulling of the quick-release pin 81, the end of the quick-release pin 81 is provided with a pull ring 812.
In order to avoid wear caused by rotation, in the present embodiment, as shown in fig. 3, a bushing device 100 is provided at each rotation connection: the bushing device 100 is disposed at the first base connection portion 31121 and the first connection hole of the first lead screw 311, the bushing device 100 is disposed at the second base connection portion 41121 and the second connection hole 211 of the second lead screw 411, and the bushing device 100 is disposed between the main bevel gear 13 and the support base 23. The bushing device 100 may be selected from known bushings or may be provided with a corresponding bushing structure as needed. The bushing arrangement 100 is based on the principle of facilitating the rotation of the components and reducing wear.
Thus, the bidirectional telescopic locking device of the invention is formed, and the assembly relation is as follows:
as shown in fig. 2 and 3, the first sleeve 50 and the second sleeve 60 are symmetrically fixed on two sides of the base 20, the first lead screw 311 and the second lead screw 411 are respectively arranged in the first sleeve 50 and the second sleeve 60, the end portions of the first lead screw 311 and the second lead screw 411 penetrate through the first connecting hole and the second connecting hole 211 to extend into the base 20, and the first secondary bevel gear 11 and the second secondary bevel gear 12 are fixedly connected to the fixed ends of the first lead screw 311 and the second lead screw 411. A first lead screw nut 312 and a second lead screw nut 412 are provided on the first lead screw 311 and the second lead screw 411, respectively. The first lock pin 32 is sleeved on the first lead screw 311 and fixedly connected with the first lead screw nut 312, and the second lock pin 42 is sleeved on the second lead screw 411 and fixedly connected with the second lead screw nut 412. The supporting seat 23 is fixedly connected to the open end of the box body 21, the main bevel gear 13 is rotatably connected to the supporting seat 23, the main bevel gear part 131 of the main bevel gear 13 is positioned in the base 20 and is engaged with the first secondary bevel gear 11 and the second secondary bevel gear 12, the main shaft part 132 of the main bevel gear extends out of the base 20, and the driving block 70 is fixedly connected to the main shaft part 132.
The working principle of the bidirectional telescopic locking device is as follows:
when the quick-release pin 81 is inserted into the first quick-release pin hole 232 and the second quick-release pin hole 72, the support seat 23 and the driving block 70 are relatively fixed, and at this time, the driving block 70 is in a locked state, and the main bevel gear 13 cannot be driven. When the quick release pin 81 is taken out of the first quick release pin hole 232 and the second quick release pin hole 72, the locking between the support base 23 and the driving block 70 is released, and the driving block 70 is in a non-locking state, and a tool such as a wrench can be used to rotate the driving block 70. Since the driving block 70 is fixedly connected to the main shaft portion 132 of the main bevel gear 13, when the driving block 70 rotates, the main bevel gear 13 rotates synchronously with the driving block 70. When the main bevel gear 13 rotates, the first and second slave bevel gears 11 and 12 engaged therewith may be rotated in synchronization. And the first slave bevel gear 11 is fixedly connected to the first screw rod 311, the second slave bevel gear 12 is fixedly connected to the second screw rod 411, when the first slave bevel gear 11 and the second slave bevel gear 12 rotate, the first screw rod 311 and the second screw rod 411 can synchronously rotate. When the first lead screw 311 and the second lead screw 411 rotate synchronously, the first lead screw nut 312 and the second lead screw nut 412 can move along the axial direction of the first lead screw 311 and the second lead screw 411. And the first lock pin 32 is fixedly connected with the first lead screw nut 312, the second lock pin 42 is fixedly connected with the second lead screw nut 412, when the first lead screw nut 312 and the second lead screw nut 412 move, the first lock pin 32 and the second lock pin 42 can synchronously move, so that the simultaneous inward movement or the simultaneous outward movement is realized, and the synchronous extension and contraction of the first lock pin 32 and the second lock pin 42 are realized. When the first locking pin 32 and the second locking pin 42 are extended or retracted to the desired positions, the quick release pins 81 are inserted into the first quick release pin hole 232 and the second quick release pin hole 72, so that the entire device is in a locked state.
While the invention has been described with reference to the above embodiments, the scope of the invention is not limited thereto, and the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the spirit of the invention.
Claims (10)
1. A bi-directional telescoping locking device, comprising:
a main bevel gear (13);
the first slave bevel gear (11) and the second slave bevel gear (12) are symmetrically arranged on two sides of the main bevel gear (13) and are respectively meshed with the main bevel gear (13);
the first telescopic assembly (30) is connected with the first slave bevel gear (11), and when the first slave bevel gear (11) rotates, the first telescopic assembly (30) performs telescopic movement along the axial direction of the first slave bevel gear (11);
the second telescopic assembly (40) is connected with the second slave bevel gear (12), and when the second slave bevel gear (12) rotates, the second telescopic assembly (40) performs telescopic movement along the axial direction of the second slave bevel gear (12);
the first telescopic assembly (30) and the second telescopic assembly (40) are symmetrically arranged on two sides of the main bevel gear (13), and when the main bevel gear (13) is driven to rotate, the first telescopic assembly (30) and the second telescopic assembly (40) are driven by the first slave bevel gear (11) and the second slave bevel gear (12) to synchronously extend and retract.
2. The bi-directional telescoping locking device of claim 1,
the first telescopic assembly (30) comprises a first screw rod mechanism (31) and a first lock pin (32), the first screw rod mechanism (31) comprises a first screw rod (311) and a first screw rod nut (312), the first screw rod nut (312) is sleeved on the first screw rod (311), one end of the first screw rod (311) is fixedly connected with the first driven bevel gear (11) to form a fixed end, and the first lock pin (32) is sleeved on the first screw rod (311) and is fixedly connected with the first screw rod nut (312) to move along the axial direction of the first screw rod (311);
the second telescopic assembly (40) comprises a second screw rod mechanism (41) and a second lock pin (42), the second screw rod mechanism (41) comprises a second screw rod (411) and a second screw rod nut (412), the second screw rod nut (412) is sleeved on the second screw rod (411), one end of the second screw rod (411) is fixedly connected with the second slave bevel gear (12) to form a fixed end, and the second lock pin (42) is sleeved on the second screw rod (411) and is fixedly connected with the second screw rod nut (412) to move along the axial direction of the second screw rod (411).
3. The bi-directional telescoping locking device of claim 2, further comprising:
a base (20) in the form of a hollow box;
the first sleeve (50) and the second sleeve (60) are respectively and symmetrically fixedly connected to the two opposite sides of the base (20), and the first sleeve (50) and the second sleeve (60) are respectively in a long cylinder shape with two open ends.
4. The bi-directional telescoping locking device of claim 3,
the main bevel gear (13) is rotationally connected to the base (20), and the axial direction of the main bevel gear (13) is perpendicular to the axial direction of the first sleeve (50) and the second sleeve (60);
the first slave bevel gear (11) and the second slave bevel gear (12) are arranged in the base (20);
the first telescopic component (30) is sleeved in the first sleeve (50) in a limiting manner, the fixed end of a first screw rod (311) of the first telescopic component (30) penetrates through the base (20) and is fixedly connected with a first secondary bevel gear (11) arranged in the base (20), and a first lock pin (32) of the first telescopic component (30) can extend out of the end part of the first sleeve (50);
the second telescopic assembly (40) is sleeved in the second sleeve (60) in a limiting manner, the fixed end of a second screw rod (411) of the second telescopic assembly (40) penetrates through the base (20) to be fixedly connected with a second driven bevel gear (12) arranged in the base (20), and a second lock pin (42) of the second telescopic assembly (40) can extend out of the end portion of the second sleeve (60).
5. A bi-directional telescopic locking device according to claim 3, characterized in that the main bevel gear (13) comprises a main bevel gear part (131) and a main shaft part (132), the main bevel gear part (131) being located in the base (20) and meshing with the first and second slave bevel gears (11, 12), respectively; the main shaft part (132) extends from the inside of the base (20) to the outside of the base (20) and forms a rotating connection with the base (20).
6. The bidirectional telescopic locking apparatus of claim 5, wherein a driving block (70) is fitted over a main shaft portion (132) of the main bevel gear (13), and when the driving block (70) is driven, a main bevel gear portion (131) of the main bevel gear (13) is rotated.
7. A bi-directional telescopic locking device according to claim 6, characterized in that said base (20) is provided with a first quick release pin hole (232), said driving block (70) is provided with a second quick release pin hole (72), when the drive block (70) is rotated so that its second quick release pin hole (72) is opposite the first quick release pin hole (232), -a quick release pin (81) is insertable in said first quick release pin hole (232) and said second quick release pin hole (72) to lock said drive block (70) against telescopic movement of said first telescopic assembly (30) and said second telescopic assembly (40); when the quick-release pin (81) is pulled out of the first quick-release pin hole (232) and the second quick-release pin hole (72), the driving block (70) can be unlocked, and the first telescopic assembly (30) and the second telescopic assembly (40) can be driven to synchronously extend and retract.
8. The bi-directional telescopic locking device according to claim 6, wherein the main shaft portion (132) includes an integrally formed support seat connecting portion (1321), a driving block connecting portion (1322) and a latch connecting portion (1323), the support seat connecting portion (1321) having a cylindrical shape rotatably connected to the base (20); the driving block connecting part (1322) is square and is spliced with the driving block (70); the bolt connecting part (1323) is sleeved with a third fixing part (93), the bolt connecting part (1323) is provided with a third pin hole (1324), the third fixing part (93) is provided with a third bolt hole (931), and a detachable third bolt (88) is inserted into the third pin hole (1324) and the third bolt hole (931).
9. The bi-directional telescoping locking device of claim 3,
the first lock pin (32) comprises a first lock pin main body part (322), a first connecting part (323) and a first limiting part (324) which are integrally formed; the first lock pin main body part (322) is in a long cylinder shape and is sleeved outside the first screw rod (311); the first connecting part (323) is formed on the end part of the first lock pin main body part (322), and the first connecting part (323) is fixedly connected with the first lead screw nut (312) through a fastener; the first limiting part (324) is formed on the outer wall of the first lock pin main body part (322) in a protruding mode, and the first limiting part (324) is attached to the inner wall of the first sleeve (50);
the second lock pin (42) comprises a second lock pin main body part (422), a second connecting part (423) and a second limiting part (424) which are integrally formed; the second lock pin main body part (422) is in a long cylinder shape and is sleeved outside the second screw rod (411); the second connecting part (423) is formed on an end of the second lock pin main body part (422), and the second connecting part (423) is fixedly connected with the second lead screw nut (412) through a fastener; the second limiting part (424) is formed on the outer wall of the second lock pin main body part (422) in a protruding mode, and the second limiting part (424) is attached to the inner wall of the second sleeve (60).
10. The bi-directional telescoping locking device of claim 3,
the first screw rod (311) comprises a first thread part (3111) and a first connecting shaft part (3112), and the first connecting shaft part (3112) penetrates through the base (20) to extend into the base (20) and is in rotating connection with the base (20);
the second screw rod (411) comprises a second threaded part (4111) and a second connecting shaft part (4112), and the second connecting shaft part (4112) penetrates through the base (20) to extend into the base (20) and form a rotary connection with the base (20);
the first screw rod nut (312) is sleeved on the first thread part (3111) and can move along the axial direction of the first thread part (3111); the second lead screw nut (412) is sleeved on the second threaded part (4111) and can move along the axial direction of the second threaded part (4111);
the first slave bevel gear (11) is fixedly connected to the first connecting shaft part (3112); the second slave bevel gear (12) is fixedly connected to the second connecting shaft portion (4112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010359334.3A CN111623018A (en) | 2020-04-29 | 2020-04-29 | Bidirectional telescopic locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010359334.3A CN111623018A (en) | 2020-04-29 | 2020-04-29 | Bidirectional telescopic locking device |
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| CN111623018A true CN111623018A (en) | 2020-09-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010359334.3A Pending CN111623018A (en) | 2020-04-29 | 2020-04-29 | Bidirectional telescopic locking device |
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| CN (1) | CN111623018A (en) |
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| CN112359167A (en) * | 2020-12-03 | 2021-02-12 | 马鞍山瑞恒精密制造有限公司 | Quick online converter slag stopping device who changes |
| CN112648341A (en) * | 2020-12-17 | 2021-04-13 | 无锡欧力德起重设备有限公司 | C-shaped shackle |
| CN112743576A (en) * | 2021-01-27 | 2021-05-04 | 深圳爱她他智能餐饮技术有限公司 | Rotating shaft system, noodle hedge overturning system, noodle making robot and single-power-driven multi-component rotating method |
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