CN109081255B - Vertical motion platform with transverse bearing capacity - Google Patents
Vertical motion platform with transverse bearing capacity Download PDFInfo
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- CN109081255B CN109081255B CN201810609555.4A CN201810609555A CN109081255B CN 109081255 B CN109081255 B CN 109081255B CN 201810609555 A CN201810609555 A CN 201810609555A CN 109081255 B CN109081255 B CN 109081255B
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004100 electronic packaging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/18—Power-operated hoists
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a vertical motion platform with transverse bearing capacity, which comprises an actuator, a force bearing frame, a steel wire rope, a guide-in pulley, a guide-out pulley, a motor support, a lead screw, a slide block, a slide plate, a spring, a force bearing bolt, a guide hole, a guide bolt, a pulley seat, a support hole, a force bearing bolt positioning hole, a slide plate, a guide hole, a lead screw support, a slide plate guide hole, a passive gap, an active gap, a pulley seat guide hole, a positioning guide hole and a guide bolt positioning hole. The invention realizes the automatic space positioning of the extending position of the steel wire rope. The fixed connection of the pulley seat and the bearing frame is realized by fastening the bearing bolt, the large-magnitude load is transmitted to the bearing frame through the pulley and the pulley seat, and the transverse force applied to the lead screw can be adjusted through the rigidity of the spring. The invention realizes the spatial adjustment of the output position of the loading force, simultaneously realizes the complete action of the loading force on the bearing frame and avoids the lead screw from bearing larger transverse load.
Description
Technical Field
The invention relates to a vertical motion platform with transverse bearing capacity, in particular to a large-stroke motion platform with a bearing structure changed through gap adjustment, and belongs to the technical field of mechanical environment tests.
Background
The electric motion platform has the remarkable advantages of high precision, high speed and high acceleration, and is widely applied to various industrial fields such as numerical control machine tools, electronic packaging and the like. The motion platform generally comprises a servo motor, a ball screw, a slide block, a servo driver, a motion controller, upper computer software, a load and the like. Besides the requirement of large-stroke movement, the vertical bearing of the moving platform is further required in the fields of hoisting, static tests and the like. However, the motion platform is generally unable to withstand large lateral loads due to the poor lateral load carrying capacity of the ball screw.
The invention provides a vertical motion platform with transverse bearing capacity. After positioning at any position, bolts are used for pre-tightening and fixing, and external load is transmitted to the force bearing frame by using the deformation of the disc springs, so that the lead screw is prevented from bearing transverse load.
Disclosure of Invention
The invention aims to provide a vertical motion platform with transverse bearing capacity, which aims at solving the problem that a ball screw is weak in transverse load bearing capacity.
A vertical motion platform with transverse bearing capacity comprises an actuator for implementing static load; a bearing frame with large bearing capacity; a wire rope for implementing a target tension; a leading-in pulley and a leading-out pulley for adjusting the direction of the steel wire rope; the motor, the motor support, the lead screw, the slide block and the slide plate are used for realizing space motion; a spring for achieving a displacement compensation capability; a force bearing bolt for realizing space positioning and locking; and a lead-in hole; a guide bolt; a pulley seat; a holder hole; a bearing bolt positioning hole; a lead-out hole; a lead screw support; a slide guide hole; a passive gap; an active gap; a pulley seat guide hole; a positioning guide hole and a positioning hole of a guide bolt.
The bearing frame is a main bearing structure and is provided with a leading-in hole, a leading-out hole and a positioning guide hole; the bearing frame is fixedly connected with the support of the guide pulley, the motor support and the lead screw support in a bolt connection mode. The bearing frame is of a cylindrical frame structure and made of steel, wherein the lead-in hole is positioned at the bottom of the side face of the bearing frame; the leading-out hole is of an oblong structure and is positioned at the side position; the positioning guide hole and the leading-out hole are positioned on the same side.
The actuator is positioned outside the bearing frame, the extending end of the actuator is connected with the steel wire rope, the steel wire rope enters the bearing frame through the leading-in hole, reverses at the leading-in pulley, reverses through the leading-out pulley, and extends out of the bearing frame through the pulley seat guide hole, the sliding plate guide hole and the leading-out hole in the pulley seat to apply load to an external product.
The sliding block is fixedly connected with the sliding plate in a bolt connection mode.
The leading-out pulley is fixedly arranged on the pulley seat and connected in a bolt connection mode.
The pulley seat is also provided with a guide bolt positioning hole and a bearing bolt positioning hole.
The guide bolt penetrates through a guide bolt positioning hole in the pulley seat to be fixedly connected with the sliding plate, a spring is arranged between the pulley seat and the sliding plate, and the guide bolt penetrates through the center of the spring to play a role in guiding.
The diameter of the guide bolt positioning hole is larger than that of the guide bolt, so that the pulley seat can freely move along the axial direction of the guide bolt when stressed.
The motor drives the lead screw to rotate and drives the sliding block to move, and then the sliding plate, the pulley seat and the pulley move together.
The gap formed between the pulley seat and the sliding plate is an active gap.
The gap formed by the pulley seat and the bearing frame is a passive gap.
When the bearing bolt reaches the designated position, the bearing bolt is connected with the bearing bolt positioning hole through a positioning guide hole on the bearing frame; in the screwing process, the spring is stressed and compressed, and the active clearance and the passive clearance are both reduced; when the passive clearance is reduced to zero, the pulley seat is tightly connected with the force bearing frame; at this time, the force applied to the slide plate, i.e., the lateral force applied to the lead screw, is the elastic force of the spring.
After the space positioning is realized, the actuator drives the steel wire rope to generate a tensile force F, the force on the pulley is transmitted to the bearing frame through the pulley seat, and the visible lead screw does not bear the action of the F, so that the transfer of the bearing structure is realized.
The invention relates to a vertical motion platform with transverse bearing capacity, which has the advantages and effects that: the motor is utilized to drive the lead screw to rotate and drive the sliding block, the sliding plate and the pulley seat to vertically move, so that the spatial positioning of the extending position of the steel wire rope is realized. The motion of the motor is controlled by the servo controller, so that the high-precision automatic control of the motion is realized. The pulley seat is fixedly connected with the force-bearing frame by screwing the force-bearing bolt and the force-bearing bolt positioning hole. When the actuator drives the steel wire rope to work, a large amount of generated loads F are transmitted to the force bearing frame through the pulley and the pulley seat, so that the lead screw is prevented from bearing large transverse force. The transverse force borne by the lead screw is only the elastic force generated by the deformation of the spring and can be adjusted through the rigidity of the spring. On one hand, the invention realizes the spatial movement of the output position of the loading force F and the positioning of any position, and also realizes that the loading force F completely acts on the bearing frame, thereby protecting the screw rod.
Drawings
FIG. 1 is a front view of a vertically movable platform.
FIG. 2 is a top view of a vertically movable platform.
FIG. 3 is a left side view of the vertically movable platform.
Fig. 4 is a front view of the pulley block.
Fig. 5 is a top view of the pulley block.
Fig. 6 left side view of the pulley block.
1, an actuator; 2 leading-in holes; 3, leading in a pulley; 4, a force bearing frame; 5, steel wire ropes; 6, leading out a pulley; 7, guiding a bolt; 8, a pulley seat; 9, a motor support; 10, a motor; 11 a seat hole; 12 springs; 13 bearing bolt positioning holes; 14, a sliding plate; 15 sliding blocks; 16 bearing bolts; 17 an exit hole; 18 leading screws; 19 a lead screw support; 20 slide plate guide holes; 21 a passive gap; 22 an active gap; 23 pulley block guiding holes; 24 positioning the guide hole; 25 guide bolt locating holes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The invention provides a vertical motion platform with transverse bearing capacity, aiming at the defect that a motion platform cannot bear large transverse force. In addition, the platform is provided with an active gap and a passive gap, when the platform is positioned at any position, the positioning bolt generates pretightening force to cause the deformation of the spring, so that the passive gap is reduced until the pulley seat is in close contact with the bearing frame, namely the bearing frame bears external force, and the lead screw is prevented from bearing transverse force. After the pretightening force is relieved, the automatic control of the position can be realized.
Specifically, the invention relates to a vertical motion platform with transverse bearing capacity, which comprises:
an actuator 1; an introduction hole 2; a lead-in pulley 3; a force bearing frame 4; a wire rope 5; a lead-out pulley 6; a guide bolt 7; a pulley seat 8; a motor support 9; a motor 10; a holder hole 11; a spring 12; a bearing bolt positioning hole 13; a sled 14; a slider 15; a bearing bolt 16; an outlet hole 17; a lead screw 18; a lead screw support 19; a slide guide hole 20; a passive gap 21; an active gap 22; a pulley seat guide hole 23; a positioning guide hole 24; guide bolt locating holes 25.
Wherein, actuator 1 is the application of force part, and the end that stretches out of actuator 1 and wire rope 5 fixed connection.
One end of the steel wire rope 5 is fixedly connected with the actuator 1 and enters the bearing frame 4 through the lead-in hole 2 on the bearing frame 4. The wire rope 5 is changed in direction by the lead-in pulley 3 and further diverted by the lead-out pulley 6. The turned steel wire rope 5 passes through a pulley seat guide hole 23 on the pulley seat 8, passes through a sliding plate guide hole 20 on the sliding plate 14, passes through a guide-out hole 17 on the bearing frame 4 and is connected with an external product.
The bearing frame 4 is of a cylindrical frame structure and made of steel, and is provided with a leading-in hole 2, a leading-out hole 17 and a positioning guide hole 24; wherein, the leading-in hole 2 is positioned at the bottom of the side surface of the bearing frame 4; the outlet hole 17 is of an oblong structure and is positioned at the side position; the positioning guide hole 24 is located on the same side as the lead-out hole 17.
When the extension bar of the actuator 1 is contracted, the steel wire rope 5 is tightened to generate the action of tension F on an external product.
The motor 10 is positioned inside the bearing frame 4 and is fixed on the motor support 9. The extending end of the motor 10 passes through the support hole 11 and is fixedly connected with the screw 18, and the connection mode can be key connection, pin connection, bolt flange connection and the like. The other end of the screw 18 is connected with a screw support 19, and the screw support 19 is fixed on the bearing frame 4.
The screw 18 is provided with a slide block 15, and when the motor 10 drives the screw 18 to rotate, the slide block 15 realizes vertical linear motion.
The slide block 15 is fixedly connected with the slide plate 14 to realize synchronous movement;
the guide pulley 6 is fixedly arranged on the pulley seat 8, the pulley seat 8 is made of steel, and a guide bolt positioning hole 25 and a bearing bolt positioning hole 13 are further arranged on the pulley seat;
the guide bolt 7 passes through a guide bolt positioning hole 25 on the pulley seat 8 and passes through the center of the spring 12 to be fixedly connected with the sliding plate 14;
the sliding plate 14 is made of steel, and a sliding plate guide hole 20 is formed in the central part of the sliding plate;
the diameter of the guide bolt positioning hole 25 is larger than that of the guide bolt 7, so that the pulley seat 8 can freely move along the axial direction of the guide bolt 7 when being stressed;
the pulley seat 8 and the sliding plate 14 form an active clearance 22, and when the spring 12 is compressed under force, the active clearance 22 is reduced;
the pulley seat 8 and the force bearing frame 4 form a passive gap 21, and the motion of the pulley seat 8 also changes the size of the passive gap 21;
therefore, the motor 10 drives the screw rod 18 to further drive the sliding block 15, the sliding plate 14, the pulley seat 8 and the guide pulley 6 to do linear motion, and motion at any spatial position can be realized. When the positioning reaches the designated position, the bearing bolt 16 passes through the positioning guide hole 24 on the bearing frame 4 and is connected with the bearing bolt positioning hole 13. In the screwing process, the bearing seat 8 compresses the spring 12, and the active clearance 22 and the passive clearance 21 are simultaneously reduced until the bearing seat 8 is tightly contacted with the force bearing frame 4. The pre-tightening force of the bearing bolt 16 is continuously increased, so that the spring 12 cannot be acted. When a static load F is applied, the steel wire rope 5 transmits force to the bearing seat 8 and further to the bearing frame 4, the sliding plate 14, the sliding block 15 and the lead screw 18 are not affected by the static load F, and the lead screw 18 is prevented from being affected by a large transverse force. It can be seen that the transverse force to which the screw 18 is subjected is entirely dependent on the spring force generated by the compression of the spring 12 and is therefore adjustable by the spring rate.
The concrete during operation:
(1) and inputting a position instruction to a control system of the motor 10, wherein the motor 10 generates rotary motion to drive the screw 18, the slider 15, the sliding plate 14 and the pulley seat 6 to move to a specified position, namely the extending position of the steel wire rope 5 is defined.
(2) After reaching the designated position, the bearing bolt 16 is screwed into the bearing bolt positioning hole 13 through the positioning guide hole 24, and the pulley seat 8 moves under the action of the pretightening force of the bearing bolt 16, so that the spring 12 is compressed, and the active gap 22 and the passive gap 21 are reduced. The bearing bolt 16 is further screwed until the passive clearance 21 is zero, and the pulley seat 8 is tightly attached to the bearing frame 4. After this process is completed, the lead screw 18 is only acted upon by the spring force generated by the spring 12.
(3) The extending end of the actuator 1 extends out and is connected with a steel wire rope 5. The other extending end of the steel wire rope 5 passes through the leading-out hole 17 on the bearing frame 4 to be connected with an external product.
(4) The stretching end of the actuator 1 contracts to drive the steel wire rope 5, and tension F is applied to the external production part. In the process, because the pulley seat 8 is fixedly connected with the force-bearing frame 4, the force on the steel wire rope 5 is directly transmitted to the force-bearing frame 4 through the guide pulley 6 and the pulley seat 8 without influencing the screw rod 18.
(5) After the test is finished, the extending end of the actuator 1 extends out, unloading is achieved, and F becomes zero.
(6) And reversely rotating the bearing bolt 16 until the bearing bolt is completely unscrewed. The pulley seat 8 returns to the initial position under the force of the spring 12.
(7) The motor 10 is started and drives the guide-out pulley 6 to move to the initial position to prepare for the next test.
Claims (3)
1. A vertical motion platform with transverse bearing capacity is characterized in that: the motion platform includes: an actuator for applying a static load; a bearing frame with large bearing capacity; a wire rope for implementing a target tension; a leading-in pulley and a leading-out pulley for adjusting the direction of the steel wire rope; the motor, the motor support, the lead screw, the slide block and the slide plate are used for realizing space motion; a spring for achieving a displacement compensation capability; a force bearing bolt for realizing space positioning and locking; the guide hole, the guide bolt, the pulley seat, the support hole, the bearing bolt positioning hole, the guide hole, the lead screw support, the slide plate guide hole, the passive clearance, the active clearance, the pulley seat guide hole, the positioning guide hole and the guide bolt positioning hole;
the bearing frame is a main bearing structure and is provided with a leading-in hole, a leading-out hole and a positioning guide hole; the force bearing frame is fixedly connected with the support of the guide pulley, the motor support and the lead screw support;
the actuator is positioned outside the bearing frame, the extension end of the actuator is connected with the steel wire rope, the steel wire rope enters the bearing frame through the lead-in hole, is reversed at the lead-in pulley, is reversed through the lead-out pulley, extends out of the bearing frame through the pulley seat guide hole, the sliding plate guide hole and the lead-out hole on the pulley seat, and applies load to an external product;
the sliding block is fixedly connected with the sliding plate;
the leading-out pulley is fixedly arranged on the pulley seat;
the pulley seat is also provided with a guide bolt positioning hole and a bearing bolt positioning hole;
the guide bolt penetrates through a guide bolt positioning hole in the pulley seat to be fixedly connected with the sliding plate, a spring is arranged between the pulley seat and the sliding plate, and the guide bolt penetrates through the center of the spring to play a role in guiding;
the motor drives the lead screw to rotate and drives the sliding block to move, and then the sliding plate, the pulley seat and the guide-out pulley move together;
a gap is formed between the pulley seat and the sliding plate and is an active gap; a gap is formed between the pulley seat and the bearing frame and is a passive gap;
inputting a position instruction to a control system of the motor, wherein the motor generates rotary motion to drive the screw rod, the sliding block, the sliding plate and the guide pulley to move to a specified position, and the bearing bolt is connected with a bearing bolt positioning hole through a positioning guide hole on the bearing frame; in the screwing process, the spring is stressed and compressed, and the active clearance and the passive clearance are both reduced; when the passive clearance is reduced to zero, the pulley seat is tightly connected with the force bearing frame; at the moment, the force borne by the sliding plate, namely the transverse force borne by the lead screw is the elastic force of the spring;
the end that stretches out of actuator contracts, drives wire rope, and the actuator drives wire rope and produces pulling force F, and the power on the pulley passes through pulley holder and transmits to the load frame, and visible lead screw does not bear F's effect, has realized bearing structure's transfer promptly.
2. The vertical motion platform with lateral load bearing capability of claim 1, wherein: the lead-out hole is oblong.
3. The vertical motion platform with lateral load bearing capability of claim 1, wherein: the diameter of the guide bolt positioning hole is larger than that of the guide bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810609555.4A CN109081255B (en) | 2018-06-13 | 2018-06-13 | Vertical motion platform with transverse bearing capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810609555.4A CN109081255B (en) | 2018-06-13 | 2018-06-13 | Vertical motion platform with transverse bearing capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109081255A CN109081255A (en) | 2018-12-25 |
| CN109081255B true CN109081255B (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810609555.4A Active CN109081255B (en) | 2018-06-13 | 2018-06-13 | Vertical motion platform with transverse bearing capacity |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111043355B (en) * | 2019-12-25 | 2020-12-29 | 浙江大学 | Three-channel ball valve with automatic temperature control function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013143145A1 (en) * | 2012-03-31 | 2013-10-03 | 中国矿业大学(北京) | Dynamics performance testing system |
| CN102866033B (en) * | 2012-10-22 | 2014-11-26 | 清华大学 | Dynamic loading device for two-way tension and pressure |
| CN103913384A (en) * | 2013-01-08 | 2014-07-09 | 陕西汉江机床有限公司 | Axial rigidity measuring apparatus of ball screw assembly |
| RU2578249C1 (en) * | 2014-12-22 | 2016-03-27 | Юлия Алексеевна Щепочкина | Device for determination of impact resistance of material |
| CN107121261B (en) * | 2017-06-28 | 2019-01-25 | 中国科学院沈阳自动化研究所 | A kind of force application apparatus based on lever augmented principle |
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| CN109081255A (en) | 2018-12-25 |
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Effective date of registration: 20240108 Address after: 102488, No.86-A902, Wanxing Road, Changyang, Fangshan District, Beijing Patentee after: Beijing Zhiwang Electric Power Technology Co.,Ltd. Address before: 100000 Beijing city Haidian District Xitucheng Road No. 10 Patentee before: Beijing University of Posts and Telecommunications |
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