WO2023173810A1 - Mécanisme d'entraînement rotatif, flèche et machine d'ingénierie - Google Patents

Mécanisme d'entraînement rotatif, flèche et machine d'ingénierie Download PDF

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Publication number
WO2023173810A1
WO2023173810A1 PCT/CN2022/135571 CN2022135571W WO2023173810A1 WO 2023173810 A1 WO2023173810 A1 WO 2023173810A1 CN 2022135571 W CN2022135571 W CN 2022135571W WO 2023173810 A1 WO2023173810 A1 WO 2023173810A1
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WO
WIPO (PCT)
Prior art keywords
stator
piston
tooth portion
tooth
teeth
Prior art date
Application number
PCT/CN2022/135571
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English (en)
Chinese (zh)
Inventor
佘玲娟
付玲
马德福
尹莉
刘延斌
Original Assignee
中联重科股份有限公司
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Application filed by 中联重科股份有限公司 filed Critical 中联重科股份有限公司
Publication of WO2023173810A1 publication Critical patent/WO2023173810A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/68—Jibs foldable or otherwise adjustable in configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • 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
    • F16H27/00—Step-by-step mechanisms without freewheel members, e.g. Geneva drives
    • F16H27/02—Step-by-step mechanisms without freewheel members, e.g. Geneva drives with at least one reciprocating or oscillating transmission member

Definitions

  • the present invention relates to the field of booms, specifically to a rotary drive mechanism, a boom, and an engineering machine.
  • the boom is usually articulated by multiple boom sections, and is expanded and retracted by the drive of each boom cylinder.
  • the relative angle between two adjacent boom sections is a key factor affecting the flexibility and working range of the boom. The larger the relative angle between two adjacent boom sections, the greater the flexibility and working range of the boom, and vice versa.
  • the maximum relative angle between two adjacent arm sections of most boom systems does not exceed 220°, which sometimes makes it difficult to meet the distribution conditions in complex construction environments. Especially when the boom system needs to avoid obstacles, the limited relative angle is difficult to achieve.
  • the connection method of the arm joints hinged by oil cylinders and bent plates will make the movement of the boom very simple when it is deployed.
  • the arm joints can only be deployed clockwise or counterclockwise.
  • the relative rotation angle of the arm joints When it is very large, if you want to retract the boom joint, you can only complete it by rotating a very large angle in the opposite direction, which greatly reduces the flexibility and work efficiency of the boom.
  • the relative angular velocity of the arm joints is not proportional to the stroke of the cylinder. As the relative rotation angle continues to change, the angular velocity of the arm joints also changes constantly. And because the arm joints are very long, a gap will be formed at the end. "Amplification" effect, this fluctuation will significantly reduce the stability and accuracy of the boom end.
  • the purpose of the present invention is to provide a rotary drive mechanism to solve the problems of uneven torque output and unstable rotation speed.
  • one aspect of the present invention provides a rotary driving mechanism, which includes an annular piston and a stator.
  • the annular piston is provided with a piston tooth portion with a protruding curved tooth surface and an inclined flat tooth surface.
  • a piston tooth portion the stator is provided with a stator tooth portion having a protruding curved tooth surface and a stator tooth portion having an inclined flat tooth surface, the annular piston can be driven to move axially relative to the stator, and
  • the annular piston first meshes with the stator teeth with protruding curved tooth surfaces through the piston teeth with protruding curved tooth surfaces, and then meshes with the stator with inclined flat tooth surfaces through the piston teeth with inclined flat tooth surfaces.
  • the teeth mesh to drive the annular piston to rotate circumferentially.
  • the stator includes an annular first stator and a second stator, and the annular piston is disposed between the first stator and the second stator.
  • the first axial end of the annular piston is provided with a first piston tooth and a second piston tooth
  • the second axial end is provided with a third and fourth piston teeth
  • the third piston tooth is
  • the stator is provided with a first stator tooth portion that can mesh with the first piston tooth portion and a second stator tooth portion that can mesh with the second piston tooth portion.
  • the second stator is provided with a first stator tooth portion that can mesh with the first piston tooth portion.
  • the third stator tooth portion meshes with the third piston tooth portion and the fourth stator tooth portion can mesh with the fourth piston tooth portion.
  • the first piston tooth portion and the first stator tooth portion respectively have protrusions.
  • the second piston tooth portion and the second stator tooth portion each have an inclined flat tooth surface
  • the third piston tooth portion and the third stator tooth portion each have a protruding curved tooth surface
  • the fourth piston tooth portion and the fourth stator tooth portion respectively have inclined flat tooth surfaces
  • the annular piston can be driven to reciprocate axially, wherein the first piston teeth first mesh with the first stator teeth, and then the second piston teeth mesh with the second stator The teeth mesh, the third piston teeth mesh with the third stator teeth first, and then the fourth piston teeth mesh with the fourth stator teeth, thereby pushing the annular piston to rotate.
  • the first piston tooth portion, the first stator tooth portion, the third piston tooth portion and the third stator tooth portion respectively have involute tooth surfaces.
  • first piston tooth portion and the second piston tooth portion are located radially inside and outside respectively
  • third piston tooth portion and the fourth piston tooth portion are located radially inside and outside respectively.
  • first piston teeth and the second piston teeth correspond one to one and have center lines aligned
  • first stator teeth and the second stator teeth correspond one to one and have center lines aligned
  • third piston tooth portion and the fourth piston tooth portion correspond to one-to-one and their center lines are aligned
  • third stator tooth portion and the fourth stator tooth portion correspond to one-to-one and their center lines are aligned.
  • the center lines of the first stator teeth and the second stator teeth are offset from the center lines of the third stator teeth and the fourth stator teeth, and the first piston teeth
  • the center lines of the second piston tooth portion and the second piston tooth portion are aligned with the center lines of the third piston tooth portion and the fourth piston tooth portion.
  • the distance between the tooth tips of the first piston tooth part and the second piston tooth part and the tooth tips of the third piston tooth part and the fourth piston tooth part is greater than the distance between the tooth tips of the first piston tooth part and the fourth piston tooth part.
  • the distance between the tooth tips of the stator teeth and the second stator teeth and the tooth tips of the third stator teeth and the fourth stator teeth is smaller than the distance between the first stator teeth and the tooth tips.
  • the distance between the tooth tips of the second stator teeth and the tooth roots of the third and fourth stator teeth is smaller than the tooth roots of the first and second stator teeth. The distance from the tooth tips of the third stator tooth and the fourth stator tooth.
  • the rotary driving mechanism includes two groups of the first stator, the second stator and the annular piston arranged axially, and the two groups of the first stator and the second stator Relatively fixed, the two annular pistons are relatively fixed circumferentially and can move relative axially.
  • the center lines of the first piston tooth portions of the two annular pistons are staggered.
  • the rotary drive mechanism includes an inner ring, the two annular pistons are axially slidably mounted on the inner ring, and the two annular pistons are circumferentially fixed relative to the inner ring.
  • the present invention also provides an arm, wherein the arm is provided with the rotation drive mechanism described in the above solution.
  • the present invention also provides an engineering machine, wherein the engineering machine is provided with the boom described in the above solution.
  • the meshing of curved tooth surfaces is combined with the meshing of flat tooth surfaces, which can ensure smooth transmission and smaller noise in the initial meshing stage, and enable the subsequent meshing stage to convert axial movement into uniform rotation. Provides more stable torque output.
  • Figure 1 is a partial schematic diagram of a rotation drive mechanism according to an embodiment of the present invention
  • Figure 2 is an explosion of the rotation drive mechanism according to the embodiment of the present invention.
  • Figure 3 is a perspective view of the annular piston according to the embodiment of the present invention.
  • Figure 4 is a schematic structural diagram of the annular piston and the stator according to the embodiment of the present invention.
  • Figure 5 is a diagram of the mating process between the teeth of the annular piston and the teeth of the stator according to the embodiment of the present invention.
  • Figures 6 and 7 are respectively process diagrams of the annular piston rotating in two different directions relative to the stator.
  • 10-annular piston 11-first piston teeth, 12-second piston teeth, 13-third piston teeth, 14-fourth piston teeth, 20-second stator, 21-first stator teeth part, 22-the second stator tooth part, 30-the second stator, 31-the third stator tooth part, 32-the fourth stator tooth part, 40-inner ring, 50-end cover.
  • the present invention provides a rotary drive mechanism, wherein the rotary drive mechanism includes an annular piston 10 and a stator.
  • the annular piston 10 is provided with a piston tooth portion with a protruding curved tooth surface and a piston with an inclined flat tooth surface.
  • the stator is provided with a stator tooth having a protruding curved tooth surface and a stator tooth having an inclined flat tooth surface
  • the annular piston 10 can be driven to move axially relative to the stator
  • the annular piston 10 can be driven to move axially relative to the stator
  • the The annular piston 10 first meshes with the stator teeth with protruding curved tooth surfaces through the piston teeth with protruding curved tooth surfaces, and then meshes with the stator with inclined flat tooth surfaces through the piston teeth with inclined flat tooth surfaces.
  • the teeth mesh to drive the annular piston 10 to rotate circumferentially.
  • the tooth surface of one is a curved tooth surface and has a protruding shape
  • the tooth surface of the other is a flat surface
  • the tooth surface of one tooth of the stator is a curved tooth
  • the tooth surface of the other type is a flat surface
  • the curved tooth surface of the annular piston 10 matches the curved tooth surface of the stator
  • the flat tooth surface of the annular piston 10 matches the flat tooth surface of the stator.
  • the tooth surface refers to the surface where two tooth parts engage with each other when they mesh with each other.
  • the axial direction refers to the axial direction of the annular piston 10 , and the circumferential direction is also the circumferential direction of the annular piston 10 .
  • the annular piston 10 can be driven to move axially, for example, by hydraulic pressure, pneumatic pressure, etc., so that the teeth at both ends enter and disengage with the teeth of the stator respectively, and the two teeth mesh with each other.
  • the tooth tops of the stator and the tooth tops of the annular piston 10 are slightly offset.
  • the teeth on the stator can guide the teeth on the annular piston 10 to move relatively circumferentially, so that the tooth tops of the annular piston 10 move to be aligned with the stator teeth. at the tooth root to realize the rotation of the annular piston 10 relative to the stator.
  • the preliminary meshing of the annular piston 10 with the first stator 20 is first achieved through the tooth meshing of the curved tooth surface.
  • the curved tooth surface is Conventional tooth structure, this design can cause less wear between the teeth, smooth transmission, and has the advantages of labor saving, durability and low noise.
  • the circumferential relative motion caused by the meshing will The movement is non-uniform; then, the second piston tooth 12 meshes with the second stator tooth 22.
  • teeth are special-shaped structures that are not conventional teeth at the same time, that is, the tooth surface is a plane, and this plane is consistent with the axial direction ( Or the center line of the tooth) forms an included angle.
  • the circumferential movement of the annular piston 10 relative to the first stator 20 is also a constant speed movement, that is, a uniform rotation is achieved.
  • the stator includes an annular first stator 20 and a second stator 30 , and an annular piston 10 is disposed between the first stator 20 and the second stator 30 .
  • the annular piston 10 can move axially between the first stator 20 and the second stator 30, and drives the annular piston 10 to rotate circumferentially through the meshing and cooperation of the teeth to achieve continuous rotation.
  • the annular piston 10 is provided with a first piston tooth 11 and a second piston tooth 12 at its first axial end, and is provided with a third piston tooth 13 and a fourth piston tooth 14 at its second axial end.
  • the first stator 20 is provided with a first stator tooth portion 21 capable of meshing with the first piston tooth portion 11 and a second stator tooth portion 22 capable of meshing with the second piston tooth portion 12, so
  • the second stator 30 is provided with a third stator tooth portion 31 that can mesh with the third piston tooth portion 13 and a fourth stator tooth portion 32 that can mesh with the fourth piston tooth portion 14.
  • the first piston The tooth portion 11 and the first stator tooth portion 21 respectively have protruding curved tooth surfaces
  • the second piston tooth portion 12 and the second stator tooth portion 22 respectively have inclined flat tooth surfaces
  • the third The piston tooth portion 13 and the third stator tooth portion 31 respectively have protruding curved tooth surfaces
  • the fourth piston tooth portion 14 and the fourth stator tooth portion 32 respectively have inclined flat tooth surfaces
  • the annular piston 10 can be driven to reciprocate axially, wherein the first piston tooth portion 11 first meshes with the first stator tooth portion 21, and then the second piston tooth portion 12 meshes with the stator tooth portion 21.
  • the second stator tooth portion 22 meshes, the third piston tooth portion 13 meshes with the third stator tooth portion 31 first, and then the fourth piston tooth portion 14 meshes with the fourth stator tooth portion 32, so that The annular piston 10 is pushed to rotate.
  • the annular piston 10 , the first stator 20 , and the second stator 30 may each be formed in a substantially tubular shape, and they may be coaxially arranged.
  • the rotation of the annular piston 10 is rotation around its central axis.
  • the first piston tooth portion 11 first meshes with the first stator tooth portion 21, that is, the annular piston 10 meshes with the first stator tooth portion 21 through the teeth of the curved tooth surface.
  • the curved tooth surface is a conventional tooth structure. This design can reduce the wear between the teeth, ensure smooth transmission, and has the advantages of labor saving, durability and low noise.
  • first piston teeth 11 when the first piston teeth 11 are meshed with the first stator teeth 21, the second piston teeth 12 are not meshed with the second stator teeth 22.
  • the second piston teeth 12 When the second piston teeth 12 begin to mesh with the second stator teeth 22, When the two stator teeth 22 are meshed, the first piston teeth 11 begin to disengage from the first stator teeth 21 .
  • the cooperation between the third piston tooth 13 and the fourth piston tooth 14 of the annular piston 10 and the second stator 30 is basically the same as the cooperation between the annular piston 10 and the first stator described above, and will not be repeated here. illustrate.
  • the first piston tooth portion 11, the first stator tooth portion 21, the third piston tooth portion 13 and the third stator tooth portion 31 respectively have involute tooth surfaces.
  • the curved tooth surface is an involute tooth surface, which is the tooth surface structure of the teeth in conventional gears.
  • first piston tooth portion 11 and the second piston tooth portion 12 are respectively located on the radially inner and outer sides
  • the third piston tooth portion 13 and the fourth piston tooth portion 14 are respectively located on the radially inner and outer sides. outside.
  • teeth are provided at both axial ends of the annular piston 10, and the teeth at each end are composed of inner and outer layers.
  • the two stators that cooperate with the annular piston 10 are also provided with teeth respectively.
  • first piston tooth portion 11 and the second piston tooth portion 12 correspond to one-to-one and the center lines are aligned
  • first stator tooth portion 21 and the second stator tooth portion 22 correspond to one-to-one and the center lines are aligned.
  • Line alignment the third piston tooth portion 13 and the fourth piston tooth portion 14 correspond to one-to-one and the center line is aligned
  • the third stator tooth portion 31 and the fourth stator tooth portion 32 correspond to the one-to-one and center line Line alignment.
  • the teeth on the annular piston 10 and the first stator 20 and the second stator 30 can have an axially symmetrical structure, and the teeth on the radially outer layer and the teeth on the radially inner layer have the same number and their center lines are aligned.
  • the outer teeth and the inner teeth of the annular piston 10, the first stator 20, and the second stator 30 can be staggered, as long as it is ensured that the teeth mesh through the curved tooth surface first and then through the flat tooth surface.
  • the teeth can be meshed.
  • the center line of the first stator tooth portion 21 and the second stator tooth portion 22 is staggered from the center line of the third stator tooth portion 31 and the fourth stator tooth portion 32.
  • the center lines of the piston tooth portion 11 and the second piston tooth portion 12 are aligned with the center lines of the third piston tooth portion 13 and the fourth piston tooth portion 14 .
  • the center line of the first piston tooth portion 11 is aligned with the tooth root of the first stator tooth portion 21
  • the center line of the third piston tooth portion 13 The line is staggered from the tooth root of the third stator tooth portion 31.
  • the center lines of the first piston tooth portion 11 and the second piston tooth portion 12 and the center lines of the third piston tooth portion 13 and the fourth piston tooth portion 14 may be staggered, And the relative positions of the center lines of the first stator teeth 21 and the second stator teeth 22 and the center lines of the third stator teeth 31 and the fourth stator teeth 32 need to be adjusted accordingly. relationship, thereby ensuring that when the teeth at one end of the annular piston 10 are aligned with the tooth roots of the corresponding stator, the teeth at the other end are staggered with the tooth roots of the corresponding stator.
  • the distance between the tooth tips of the first piston tooth portion 11 and the second piston tooth portion 12 and the tooth tips of the third piston tooth portion 13 and the fourth piston tooth portion 14 is greater than
  • the distance between the tooth tips of the first stator tooth portion 21 and the second stator tooth portion 22 and the tooth tips of the third stator tooth portion 31 and the fourth stator tooth portion 32 is smaller than the third stator tooth portion 31 and the fourth stator tooth portion 32 .
  • the distance between the tooth tips of the stator teeth 21 and the second stator teeth 22 and the tooth roots of the third stator teeth 31 and the fourth stator teeth 32 is smaller than that of the first stator teeth.
  • the distance between the tooth tips of the two ends of the annular piston 10 is less than the distance between the tooth tips of the two stators. This causes the teeth at one end of the annular piston 10 to be out of mesh with the teeth of the corresponding stator.
  • the teeth of the annular piston 10 have begun to mesh with the corresponding teeth of the stator, that is, the teeth of at least one end of the annular piston 10 remain meshed with the corresponding stator teeth.
  • the distance between the tooth tips at both ends of the annular piston 10 is smaller than the distance between the tooth tips of any one stator and the tooth root of the other stator, that is, the annular piston 10 is fully meshed with one of the stators (the tooth tips of the piston teeth are When meshing with the tooth root of the stator tooth), the piston tooth at the other end is disengaged from the tooth tip of the other stator tooth, thereby allowing the annular piston 10 to rotate circumferentially to cross the tooth tip of the other stator.
  • a curved tooth surface its contour line is a smooth curve, and in the direction from the tooth top to the tooth root, the angle between the tangent line of the contour line and the central axis of the tooth gradually decreases, and the contour line gradually decreases.
  • the tangent line at each point on the line corresponds to the relative movement direction of the teeth when meshing at that point; similarly, for a tooth surface with a flat surface, its outline is a straight line, and the angle between the straight line and the center line of the tooth remains constant. .
  • the tangent direction of the tooth surface is the same as the tangent direction of the tooth surface of the first piston tooth part 11 and the first stator tooth part 21 (actually the direction of the tooth surface contour line), achieving a smooth transition.
  • the matching structure of the third piston tooth portion 13 and the fourth piston tooth portion 14 at the other end of the annular piston 10 and the third stator tooth portion 31 and the fourth stator tooth portion 32 which will not be described in detail here.
  • the rotary driving mechanism includes two groups of the first stator 20, the second stator 30 and the annular piston 10 arranged axially.
  • the two groups of the first stator 20 and the second The two stators 30 are relatively fixed, and the two annular pistons 10 are relatively fixed circumferentially and can move relative axially.
  • two sets of first stators 20, second stators 30 and annular pistons 10 are arranged along the axial direction.
  • the second stator 30 of one set and the first stator of the other set are 20 are connected to each other and can be formed in one piece.
  • the functions of these two sets of structures are basically the same, which can improve the overall reliability. When one set is damaged, the other set can be used.
  • the center lines of the first piston teeth 11 of the two annular pistons 10 are staggered.
  • the meshing mode of the stator teeth allows the annular piston 10 to rotate in only one direction; at the same time, the second annular piston 10 is in an incomplete meshing state and chooses to drive the annular piston 10 in the opposite axial direction, and its rotation direction is exactly the opposite. , that is, the rotation direction can be determined by selecting the axial movement direction of the annular piston 10, and the second annular piston 10 can drive the first annular piston 10 to rotate, thereby realizing the axial movement of the two annular pistons.
  • the rotary driving mechanism includes an inner ring 40 , two annular pistons 10 are axially slidably mounted on the inner ring 40 , and the two annular pistons 10 are circumferentially fixed relative to the inner ring 40 .
  • the annular piston 10 can be installed on the inner ring 40 through the cooperation of splines and spline grooves. Therefore, it can move axially relative to the inner ring 40 but cannot rotate relative to the circumferential direction.
  • the inner ring 40 restricts the movement direction through a relatively fixed structure, that is, it can only rotate relative to each stator, but cannot move axially relative to the stator.
  • structures to guide the inner ring 40 can be provided on multiple stators.
  • the inner ring 40 passes through the stator and annular piston, and an end cover 50 can be provided at its other end.
  • the end cover 50 can limit the axial movement of the inner ring 40 and achieve sealing.
  • the end cap 50 may be annular in shape, with the integral rotary drive mechanism provided with a central hole to allow passage of the pipeline.
  • the structure in which the first stator 20 and the second stator 30 are integrally connected can be provided with a cavity that accommodates the movement of the two annular pistons 10. By providing hydraulic power to the cavity, the annular pistons 10 can be driven to move axially.
  • the present invention also provides an arm, wherein the arm is provided with the rotation drive mechanism described in the above solution.
  • the stator part can be relatively fixed with one arm section of the boom, and the annular piston 10, especially the inner ring 40, can cooperate with another adjacent arm section to drive the other arm section to rotate.
  • the present invention also provides an engineering machine, wherein the engineering machine is provided with the boom described in the above solution.
  • the construction machinery may be a concrete pump truck, a crane, etc.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Actuator (AREA)
  • Hydraulic Motors (AREA)

Abstract

Sont divulgués un mécanisme d'entraînement rotatif, une flèche et une machine d'ingénierie. Le mécanisme d'entraînement rotatif comprend un piston annulaire (10) et un stator (20, 30) ; le piston annulaire (10) est pourvu d'une partie de dent de piston (11, 13) ayant une surface de dent incurvée en saillie et une partie de dent de piston (12, 14) ayant une surface de dent plate inclinée ; le stator (20, 30) est pourvu d'une partie de dent de stator (21, 31) ayant une surface de dent incurvée en saillie et une partie de dent de stator (22, 32) ayant une surface de dent plate inclinée ; le piston annulaire (10) peut être entraîné pour se déplacer axialement par rapport au stator (20, 30). La combinaison de mise en prise de la surface de dent incurvée et de mise en prise de la surface de dent plate peut assurer une transmission régulière à un étage de mise en prise initial, de telle sorte que le bruit est plus faible, et le mouvement axial peut être converti en rotation uniforme dans un état de mise en prise ultérieur, fournissant ainsi une sortie de couple plus stable.
PCT/CN2022/135571 2022-03-16 2022-11-30 Mécanisme d'entraînement rotatif, flèche et machine d'ingénierie WO2023173810A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210259497.3A CN116792358A (zh) 2022-03-16 2022-03-16 旋转驱动机构、臂架及工程机械
CN202210259497.3 2022-03-16

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WO2023173810A1 true WO2023173810A1 (fr) 2023-09-21

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FR2907869A1 (fr) * 2006-10-31 2008-05-02 Robotiques 3 Dimensions Sarl Dispositif d'actionnement transformant un mouvement de va et vient en mouvement de translation ou de rotation
CN101205819A (zh) * 2006-12-19 2008-06-25 阿尔法·拉瓦尔·莫阿蒂 液压电动机
CN103998368A (zh) * 2011-11-10 2014-08-20 施维英有限公司 尤其用于车载式混凝土泵的臂架结构以及车载式混凝土泵
US20200391982A1 (en) * 2017-12-22 2020-12-17 Schwing Gmbh Hydraulic rotary drive
CN213231293U (zh) * 2020-09-23 2021-05-18 中联重科股份有限公司 旋转驱动机构、臂架组件和工程机械

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* Cited by examiner, † Cited by third party
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