CN115215248A - Screw lift with telescopic and rotary lead screw - Google Patents

Screw lift with telescopic and rotary lead screw Download PDF

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Publication number
CN115215248A
CN115215248A CN202210817752.1A CN202210817752A CN115215248A CN 115215248 A CN115215248 A CN 115215248A CN 202210817752 A CN202210817752 A CN 202210817752A CN 115215248 A CN115215248 A CN 115215248A
Authority
CN
China
Prior art keywords
screw
rotation
lifting screw
screw rod
worm gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202210817752.1A
Other languages
Chinese (zh)
Inventor
陈广志
尹永涛
张诣
雷红军
李增军
钟志刚
顾海涛
孙常新
范长海
周洪
田奥克
张仲志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lim Tec Langfang Transmission Equipment Co ltd
High Speed Aerodynamics Research Institute of China Aerodynamics Research and Development Center
Original Assignee
Lim Tec Langfang Transmission Equipment Co ltd
High Speed Aerodynamics Research Institute of China Aerodynamics Research and Development Center
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lim Tec Langfang Transmission Equipment Co ltd, High Speed Aerodynamics Research Institute of China Aerodynamics Research and Development Center filed Critical Lim Tec Langfang Transmission Equipment Co ltd
Priority to CN202210817752.1A priority Critical patent/CN115215248A/en
Publication of CN115215248A publication Critical patent/CN115215248A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/10—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated with telescopic sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/18—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through worm gearings

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
  • Transmission Devices (AREA)

Abstract

The invention discloses a screw elevator with a telescopic and rotatable screw rod, which comprises: the lifting screw rod is connected with the power input end and used for converting the rotary motion of the power input end into the linear motion of the lifting screw rod; the anti-rotation body is fixed at one end of the lifting screw rod; the worm gear and worm pair speed reducer is connected with the rotation preventing body and used for enabling the lifting screw rod to rotate selectively. When the lifting mechanism works, the power input end drives the lifting screw rod to do linear movement, at the moment, the lifting screw rod cannot rotate due to the self-locking property of the worm gear pair speed reducer, and the lifting screw rod can stop at any position in a linear movement stroke; the worm gear pair speed reducer is driven to rotate to drive the lifting screw rod to rotate together, the rotation angle is a multiple of 90 degrees, the worm gear pair speed reducer stops rotating, the state can be kept unchanged at the moment, and the worm gear pair speed reducer can also be linearly moved and then returns in the original way or directly returns in the original way. The invention has the characteristic that the movement and the rotation are carried out independently.

Description

Screw lift with telescopic and rotary lead screw
Technical Field
The invention relates to the technical field of spiral lifters, in particular to a spiral lifter with a telescopic and rotatable lead screw.
Background
At present, the application of the spiral elevator at home and abroad is mainly in the related fields of buildings, machinery, chemical engineering, traffic and the like. It all obtains rapid development as a jacking equipment, no matter in structural design or in control technique, but, in pnematic large-scale project, current spiral elevator can only do rectilinear movement, can't satisfy rectilinear movement and rotary motion's common demand, consequently, need improve current spiral elevator urgently.
Disclosure of Invention
The invention aims to design and develop a spiral elevator with a telescopic and rotatable lead screw, which can stop at any position in the linear stroke of the lifting lead screw and keep unchanged for a long time, meets the working motion requirements on the movement or rotation of the lifting lead screw, and is safe and reliable to use.
The technical scheme provided by the invention is as follows:
a screw retractable and rotatable screw elevator comprising:
a power input shaft; and
a first worm gear intermeshed with the power input shaft;
the lifting screw is screwed with the first worm gear trapezoidal threaded hole and is used for converting the rotary motion of the power input end into the linear motion of the lifting screw;
the anti-rotation body is fixed at one end of the lifting screw rod, and an inner spline hole of the anti-rotation body is matched with a spline shaft of the turbine worm reducer;
the worm gear and worm pair speed reducer comprises a speed reducer input shaft, a second worm gear and a spline shaft and is used for enabling the lifting screw rod to selectively rotate;
the first worm wheel is screwed with the lifting screw through a trapezoidal thread inner hole of the first worm wheel, the first worm wheel drives the lifting screw to move back and forth through rotation, one end of the spline shaft is matched with the rotation preventing body through a spline and slides axially, the other end of the spline shaft is fixed on the second worm wheel, and the second worm wheel is meshed with the input shaft of the speed reducer.
Preferably, the power input shaft is connected with a first driving motor.
Preferably, the trapezoidal thread hole of the first worm wheel is screwed with the lifting screw rod.
Preferably, the method further comprises the following steps:
a housing provided outside the first worm wheel;
one end of the screw rod is arranged in the shell, the other end of the screw rod is arranged on the outer side of the shell, and the anti-rotating body gap is arranged in the shell.
Preferably, the center of the anti-rotation body is provided with a spline hole for matching with the spline shaft for sliding connection.
Preferably, the lifting screw is of a hollow structure, one end of the spline shaft penetrates through the spline hole, and the lifting screw slides and stretches along with some movement of the screw in the inner hole of the lifting screw.
Preferably, the method further comprises the following steps:
and the rotation sensing part is arranged on the rotation preventing body and used for monitoring the rotation angle of the rotation preventing body.
Preferably, the method further comprises the following steps:
and the two position induction switches are symmetrically arranged on the outer side of the shell and are used for limiting the axial movement of the lifting screw rod.
Preferably, the method further comprises the following steps:
and the plurality of rotary induction switches are circumferentially arranged at equal intervals on the outer side of the shell and used for limiting the rotation angle of the rotation prevention body.
Preferably, the input shaft of the speed reducer is connected with a second driving motor.
The invention has the following beneficial effects:
the invention designs and develops a spiral elevator with a telescopic and rotatable lead screw, which is formed by improving a spiral elevator in order to adapt to special working requirements in the use of a common spiral elevator, can stop at any position in a linear stroke of the lifting lead screw and keep unchanged for a long time, can meet the working movement requirements on the movement or rotation of the lifting lead screw, and is safe and reliable to use.
Drawings
Fig. 1 is a schematic structural diagram of a spiral elevator in which a lead screw is retractable and rotatable according to the present invention.
Fig. 2 is a partial sectional structural view of a spiral elevator in which a lead screw is retractable and rotatable according to the present invention.
Fig. 3 isbase:Sub>A schematic view ofbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A ofbase:Sub>A spiral elevator in whichbase:Sub>A lead screw is retractable and rotatable according to the present invention.
Fig. 4 is a schematic view illustrating linear movement of a lifting screw of a spiral elevator in which the screw is retractable and rotatable according to the present invention.
Detailed Description
The present invention is described in further detail below in order to enable those skilled in the art to practice the invention with reference to the description.
As shown in fig. 1 to 4, the present invention provides a screw elevator in which a screw rod is retractable and rotatable, including:
a power input shaft 110, a lifting screw 120, a housing 130, an anti-rotation body 140, a worm gear reducer, and a first worm wheel 160.
Wherein, worm gear reduction unit includes: a reducer input shaft 151, a reducer case 152, a second worm wheel (not shown in the figure), and a spline shaft 153.
The power input shaft 110 is connected with a first driving motor or other means (such as manual) for power driving; the first worm gear 160 is rotatably fixed in the housing 130, and the first worm gear 160 is meshed with the power input shaft 110 and is sleeved on the outer side of the lifting screw 120 through a thread, so that the first worm gear 160 reciprocates on the lifting screw 120 through rotation; one end of the lifting screw 120 is a hollow structure and is arranged in the housing 130, the other end of the lifting screw passes through the housing 130 in a rotatable manner, and the power input shaft 110, the first worm gear 160 and the lifting screw 120 are used for converting the rotary motion of the power input shaft 110 into the linear motion of the lifting screw 120; the rotation preventing body 140 is firmly connected with one end of the lifting screw rod 120 into a whole through a screw, meanwhile, the rotation preventing body 140 is arranged in the shell 130 in a clearance manner, and a spline hole is formed in the center of the rotation preventing body 140.
Reduction gear housing 152 is fixed the one end of casing 130, reduction gear input shaft 151 transversely passes reduction gear housing 152, just the second worm wheel with reduction gear input shaft 151 intermeshing, the one end and the splined hole of integral key shaft 153 are mutually supported and the clearance sets up in lifting screw 120's one end, the other end is connected with the second worm wheel is perpendicular, and along with lifting screw 120's concertina movement, the splined hole also along splined shaft 153 relative slip, simultaneously, the worm gear reduction gear has the auto-lock nature to drive lifting screw 120 through splined shaft 153 and rotate together or will lifting screw 120 locking.
In the present embodiment, the reducer input shaft 151 is connected to a second drive motor.
As shown in fig. 3, the present invention further includes: 2 rotary sensing members 170 and two position sensing switches (a 0-position switch 181 and a limit switch 182), wherein the rotary sensing members 170 are symmetrically arranged at the circumferential lower end of the rotation prevention body 140 and used for monitoring the rotation angle of the rotation prevention body 140; the 0-position switch 181 is disposed outside the housing 130, and the 0-position switch 181 corresponds to an initial position of the elevating screw 120; the limit switch 182 and the 0-position switch 181 are symmetrically disposed on the outer side of the housing 130, the limit switch 182 corresponds to a linear stroke limit position of the lifting screw, and the two position sensing switches are used for limiting the axial movement displacement of the lifting screw 120.
In this embodiment, a rotation sensing switch 190 is further included, which is disposed at the outer side of the housing 130, and is used to limit the rotation angle of the rotation preventing body, and the number of the rotation sensing switches 190 is 2, one is disposed at the initial position where the rotation angle of the rotation preventing body 140 is 0 °, and one is disposed at the position where the rotation angle of the rotation preventing body 140 is 90 °.
Preferably, the number of the rotary inductive switches is 4, and the 4 rotary inductive switches 190 are circumferentially arranged at equal intervals on the outer side of the housing, and the intervals are all 90 degrees, so as to prevent the rotary inductive switches from failing.
The first worm wheel, the rotation preventing body 140 and the rotation sensing member 170 are all disposed in the housing.
As shown in fig. 4, the main body elevator of the device is self-locking, the rotation-preventing body 140 and the rotation-sensing member 170 fixed with the rotation-preventing body form a feedback system for the motion state and position of the lifting screw 120 in the device, when the device works, the power input shaft 110 is rotated by a motor or other methods (such as manual operation), the lifting screw 120, the rotation-preventing body 140 and the rotation-sensing member 170 leave the 0 point position for linear movement, at this time, due to the self-locking property of the worm gear reducer, the lifting screw 120 cannot rotate but only can do linear movement through the spline shaft 153, when the lifting screw 120 moves to a specific position (which can be an encoder on the motor, or a displacement sensor or a sensing switch, etc. as a feedback), the power input shaft 110 stops rotating, and the lifting screw 120 stops moving; the reducer input shaft 151 is driven to rotate, the spline shaft 153 rotates, the spline shaft drives the rotation prevention body 140 and the lifting screw rod 120 to rotate together, and when the rotation prevention body rotates to a specific position, one of the 4 rotary induction switches 190 is triggered to drive the reducer input shaft 151 to stop rotating; at this moment, the elevator can be kept unchanged, and can also return to the original path after moving linearly to a certain degree or directly return to the original path.
The elevator can be realized in the maximum linear stroke and the specific rotation angle value of the screw rod: 1. can stop at any position and keep unchanged for a long time; 2. the travel switches (the rotary inductive switch and the position inductive switch) can be arranged and increased or decreased at proper positions according to requirements; 3. after the work is finished, the original way is returned, thus completing a work cycle.
The invention relates to a spiral elevator with a telescopic and rotatable lead screw, which is formed by improving a spiral elevator in order to adapt to special working requirements in the use of a common spiral elevator.
While embodiments of the invention have been described above, it is not intended to be limited to the details shown, particular embodiments, but rather to those skilled in the art, and it is to be understood that the invention is capable of numerous modifications and that various changes may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (10)

1. A screw elevator with a retractable and rotatable lead screw, comprising:
a power input shaft; and
a first worm gear intermeshed with the power input shaft;
the lifting screw is screwed with the first worm gear trapezoidal threaded hole and is used for converting the rotary motion of the power input end into the linear motion of the lifting screw;
the anti-rotation body is fixed at one end of the lifting screw rod, and an inner spline hole of the anti-rotation body is matched with a spline shaft of the worm gear reducer;
the worm gear and worm pair speed reducer comprises a speed reducer input shaft, a second worm gear and a spline shaft and is used for preventing the lifting screw rod from rotating when the lifting screw rod does linear motion; when the lead screw needs to do rotary motion, the lead screw can be driven to rotate;
the first worm wheel is screwed with the lifting screw through a trapezoidal thread inner hole of the first worm wheel, the first worm wheel drives the lifting screw to move back and forth through rotation, one end of the spline shaft is matched with the anti-rotating body through a spline and slides axially, the other end of the spline shaft is fixed on the second worm wheel, and the second worm wheel is meshed with the input shaft of the speed reducer.
2. The screw retractable and rotatable screw elevator of claim 1, wherein the power input shaft is connected to a first drive motor.
3. The screw retractable and rotatable screw of claim 2, wherein said worm gear is engaged with said elevator screw by a trapezoidal thread.
4. The screw retractable and rotatable screw elevator of claim 3, further comprising:
a housing provided outside the first worm wheel;
one end of the lead screw is arranged inside the shell, the other end of the lead screw is arranged outside the shell, and a gap exists between the rotation preventing body and the inside of the shell.
5. The screw telescopic and rotary screw according to claim 4, wherein said rotation preventing body is provided with a spline hole at a center thereof for engaging and sliding with said spline shaft.
6. The screw retractable and rotatable screw elevator as set forth in claim 5, wherein said elevating screw is a hollow structure, one end of said spline shaft passes through said spline hole, and is retracted in said screw in accordance with the linear movement of said elevating screw.
7. The screw retractable and rotatable screw elevator of claim 6, further comprising:
and the rotation sensing part is arranged on the rotation preventing body and used for monitoring the rotation angle of the rotation preventing body.
8. The screw retractable and rotatable screw elevator of claim 7, further comprising:
and the two position induction switches are symmetrically arranged on the outer side of the shell and are used for limiting the axial movement of the lifting screw rod.
9. The screw retractable and rotatable screw elevator of claim 8, further comprising:
and the plurality of rotary induction switches are circumferentially arranged on the outer side of the shell at equal intervals and are used for limiting the rotation angle of the rotation prevention body.
10. The screw retractable and rotatable screw elevator of claim 1, wherein the reducer input shaft is connected to a second drive motor.
CN202210817752.1A 2022-07-13 2022-07-13 Screw lift with telescopic and rotary lead screw Withdrawn CN115215248A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210817752.1A CN115215248A (en) 2022-07-13 2022-07-13 Screw lift with telescopic and rotary lead screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210817752.1A CN115215248A (en) 2022-07-13 2022-07-13 Screw lift with telescopic and rotary lead screw

Publications (1)

Publication Number Publication Date
CN115215248A true CN115215248A (en) 2022-10-21

Family

ID=83611852

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210817752.1A Withdrawn CN115215248A (en) 2022-07-13 2022-07-13 Screw lift with telescopic and rotary lead screw

Country Status (1)

Country Link
CN (1) CN115215248A (en)

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Application publication date: 20221021

WW01 Invention patent application withdrawn after publication