CN207722967U - A kind of geotechnical centrifuge gravity-center adjustable counter weight device - Google Patents
A kind of geotechnical centrifuge gravity-center adjustable counter weight device Download PDFInfo
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- CN207722967U CN207722967U CN201721517978.0U CN201721517978U CN207722967U CN 207722967 U CN207722967 U CN 207722967U CN 201721517978 U CN201721517978 U CN 201721517978U CN 207722967 U CN207722967 U CN 207722967U
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- lead screw
- bearing
- holder
- nut
- centrifuge
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Abstract
The utility model discloses a kind of geotechnical centrifuge gravity-center adjustable counter weight devices, belong to geotechnical centrifuge field, it can be fixed by the flange on holder between the device and centrifuge, it is designed for Demountable, it is driven by remote-control motor, the position of mass block can be adjusted under centrifuge dynamic or static conditions to realize balance adjustment；Bidirectional balanced adjusting may be implemented, i.e. mass block can be moved back and forth along lead screw length direction, during experiment capable of being overcome, the influence due to model itself change of configuration for equipment whole machine balancing；By replacing mass block, the balance adjustment of geotechnical centrifuge different scales and range may be implemented；The device can both use on suspended centrifugal, can also be used on platform-type centrifuge, and installation is extremely convenient.
Description
Technical field
The utility model belongs to geotechnical centrifuge field, and in particular to a kind of geotechnical centrifuge gravity-center adjustable counter weight device.
Background technology
Geotechnical centrifuge is with being mainly used in rock-soil mechanics side slope intensity, dam bursting, novel ocean platform, earth structure
Experimental studies should be waited by ringing.In order to ensure that the uneven resultant force that its main shaft is subject in geotechnical centrifuge operational process is smaller, usually
Trim is carried out to it before operation.
Trim is carried out to centrifuge before operation, has been all made of static trim principle, will be matched when centrifuging machine host design
Leveling device is individually designed as independent particle system progress, and the advantage is that can carry out matched design according to centrifuge scale etc..
The design of this kind of static state balancing device is mainly the following scheme：
Scheme one：Centrifuge pivoted arm is Length discrepancy pivoted arm, and screw structure, lead screw is made in centrifuge pull strap at galianconism end
On endoporus is installed the matched synchronous belt wheel structure of nut is made, belt wheel is connected to the motor by synchronous belt；It is pre-designed
Fixed weight mass block be mounted on belt wheel on；Before centrifuge operation, by reading pivoted arm intermediate rocker load cell reading
And carry out that weight mass block displacement distance is calculated, by running motor so that weight mass edge can be realized in belt wheel rotation
The movement of pivoted arm radial direction, to achieve the purpose that centrifuge balances.
Scheme two：It is also the structure type using feed screw nut, fixed weight mass block is mounted on nut, centrifuge
Before operation, amount of unbalance is read by load cell, mass block adjustment distance is obtained, handwheel is then stirred by manpower, it is real
Existing trim.
Scheme three：Test model and main counterweight be installed respectively in the hanging basket at geotechnological vibration centrifugal pivoted arm both ends, in pivoted arm
Between position periphery be equipped with by motor-driven feed screw nut's kinematic pair drive trim Mass movement, realize centrifuge operational process
In balance.
Scheme four：By installing counterweight water tank in the hanging basket of centrifuge pivoted arm one end, pacify in centrifuge pivoted arm middle part position
Water controller, solenoid valve, flowmeter etc. are put, realizes the control of water tank inner storing water amount when centrifuge is run by opening and closing solenoid valve
System, to realize the trim to centrifuge.
The shortcomings that above-mentioned design is：The design of scheme one and two, centrifuge is indivisible with flat structure and centrifuge main body,
And it can only be balanced adjusting in a static condition；Scheme three is then since its design philosophy is namely based on to centrifuge equilibrium state
Amendment expansion, so can only its adjustment amount it is smaller；Scheme four fundamental rules are not carried out water cyclic system due to that can only carry out water filling
System caves in for the model occurred in experiment, the model caused by reasons such as structure is destroyed so unidirectional balance adjustment can only be realized
Equilibrium state variation, helpless caused by barycenter variation.
Utility model content
The purpose of this utility model is that providing a kind of geotechnical centrifuge gravity-center adjustable to solve the above-mentioned problems matches
Refitting is set.
The utility model is achieved through the following technical solutions above-mentioned purpose：
A kind of geotechnical centrifuge gravity-center adjustable counter weight device, including：
Holder, the holder are cylinder cage structure, and one end is provided with the flange for being fixedly connected with centrifuge；
Lead screw, the lead screw are the cylindrical structure that the holder other end is installed on by Bearning mechanism, the bearing machine
Structure includes bearing block and bearing, and the bearing is installed between the lead screw and the bearing block, and the bearing block is fixedly mounted
There are several guide rods being mutually parallel, the guide rod to arrange that the lead screw and the holder are coaxial, inner circle along lead screw length direction
Cylinder is provided with motion thread；
Nut, the nut are the cylindrical structure being placed in inside the lead screw, and the nut is sleeved on the guide rod simultaneously
It is reciprocally moveable, external cylindrical surface is provided with motion thread and center location is provided with counterweight mounting hole, the transmission of the nut
Screw thread is engaged with the motion thread of the lead screw；
Mass block, the mass block are cylindrical structure, are installed in the counterweight mounting hole of the nut, the quality
It is detachable fixed connection structure between block and the nut；
Gear ring, the gear ring are sleeved on the lead screw, and are positioned relative to the lead screw circumferential direction；
Gear, the gear are engaged with the gear ring；
Motor is fixedly installed on the holder, and the gear is mounted on the turning end of the motor.
As a kind of technical solution of this patent selection, there are two the bearing blocks, and one of bearing block is fixed on institute
It states on holder, the both ends of the lead screw and two bearing blocks are both provided with stair-stepping bearing mounting surface, the lead screw
Bearing is installed between both ends and two bearing blocks, the both ends of the guide rod are individually fixed in two bearing blocks
On.
As a kind of technical solution of this patent selection, the bearing block is by sequentially connected big ring part, middle cylinder
Portion and small ring part composition, the outer diameter of the small ring part, the outer diameter of the middle circle canister portion, the internal diameter of the big ring part are equal
Equal, the small ring part offers several guide rod installing holes for installation guide rod.
As a kind of technical solution of this patent selection, the both ends of the lead screw are respectively arranged with bearing protecting cover and transmission is protected
Lid, the gear and the gear ring are encapsulated in the transmission protecting cover, the bearing envelope of the one end of the lead screw far from the holder
In the bearing protecting cover.
As a kind of technical solution of this patent selection, the outer ring surface of the holder is welded with motor erecting bed, the electricity
Machine is bolted to connection on the motor erecting bed.
As a kind of technical solution of this patent selection, several reinforcing ribs are provided on the inside of the holder.
As a kind of technical solution of this patent selection, the interior cylinder with the mass block of counterweight mounting hole of the nut
Face is machined with ladder mounting surface, and the ladder mounting surface of the mass block is resisted against on the ladder mounting surface of the nut.
The beneficial effects of the utility model are：
It is fixed by the flange on holder between the utility model and centrifuge, is designed for Demountable, by distant
Motor driving is controlled, the position of mass block can be adjusted under centrifuge dynamic or static conditions to realize balance adjustment；It can be real
Existing bidirectional balanced adjusting, i.e. mass block can be moved back and forth along lead screw length direction, during capable of overcoming experiment, certainly due to model
Influence of the body change of configuration for equipment whole machine balancing；By replace mass block, may be implemented geotechnical centrifuge different scales and
The balance adjustment of range；The device can both use on suspended centrifugal, can also be used on platform-type centrifuge, installation
It is extremely convenient.
Description of the drawings
Fig. 1 is the static application schematic diagram of geotechnical centrifuge gravity-center adjustable counter weight device described in the utility model；
Fig. 2 is the dynamic application schematic diagram of geotechnical centrifuge gravity-center adjustable counter weight device described in the utility model；
Fig. 3 is the sectional structure chart of geotechnical centrifuge gravity-center adjustable counter weight device described in the utility model；
Fig. 4 is the structure chart of lead screw described in the utility model；
Fig. 5 is the structure chart of bearing block described in the utility model；
Fig. 6 is the structure chart of holder described in the utility model；
In figure：1- gravity-center adjustable counter weight devices, 2- centrifuge pivoted arms, 3- test models, 11- bearing protecting covers, 12- bearings,
13- is driven protecting cover, 14- gears, 15- motors, 16- gear rings, 17- mass blocks, 18- guide rods, 19- holders, 120- bearing blocks, 121-
Nut, 122- lead screws, 123- guide rod installing holes, 124- motor erecting beds.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings：
In conjunction with shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the utility model includes with lower structure：
Holder 19, holder 19 are cylinder cage structure, and one end is provided with the flange for being fixedly connected with centrifuge；
Lead screw 122, lead screw 122 are the cylindrical structure that 19 other end of holder is installed on by Bearning mechanism, Bearning mechanism packet
Bearing block 20 and bearing 12 are included, bearing 12 is installed between lead screw 122 and bearing block 20, and bearing block 20 is installed with several phases
Mutually parallel guide rod 18, guide rod 18 arrange that lead screw 122 and holder 19 are coaxial along 122 length direction of lead screw, inner cylinder face setting
There is motion thread；
Nut 121, nut 121 are the cylindrical structure being placed in inside lead screw 122, and nut 121 is sleeved on guide rod 18 and can
It moves back and forth, external cylindrical surface is provided with motion thread and center location is provided with counterweight mounting hole, and matching for nut 121 re-mounts
In the hole and cylindrical surface of mass block 17 is machined with ladder mounting surface, and the ladder mounting surface of mass block 17 is resisted against nut 121
On ladder mounting surface, the motion thread of nut 121 is engaged with the motion thread of lead screw 122；
Mass block 17, mass block 17 are cylindrical structure, are installed in the counterweight mounting hole of nut 121, mass block 17
It is detachable fixed connection structure between nut 121；
Gear ring 16, gear ring 16 are sleeved on lead screw 122, and relative to the circumferential positioning of lead screw 122；
Gear 14, gear 14 are engaged with gear ring 16；
Motor 15 is fixedly installed on holder 19, and gear 14 is mounted on the turning end of motor 15.
As a kind of technical solution of this patent selection, there are two bearing blocks 20, and one of bearing block 20 is fixed on branch
On frame 19, the both ends of lead screw 122 and two bearing blocks 20 are both provided with stair-stepping bearing mounting surface, the both ends of lead screw 122 and
Bearing is installed between two bearing blocks 20, the both ends of guide rod 18 are individually fixed on two bearing blocks 20.
As a kind of technical solution of this patent selection, bearing block 20 is by sequentially connected big ring part, middle circle canister portion
With small ring part form, the outer diameter of small ring part, the outer diameter of middle circle canister portion, big ring part internal diameter be equal, the structure group
It has been shaped as bearing mounting surface, the installation of bearing, small ring part is convenient for offer several guide rods for installation guide rod 18 and install
Hole 123, to realize the fixation of guide rod 18.
As a kind of technical solution of this patent selection, the both ends of lead screw 122 are respectively arranged with bearing protecting cover 11 and transmission
Protecting cover 13, gear 14 and gear ring 16 are encapsulated in transmission protecting cover 13, and the bearing package of the one end of lead screw 122 far from holder 19 is in axis
It holds in protecting cover 11.
As a kind of technical solution of this patent selection, the outer ring surface of holder 19 is welded with motor erecting bed 124, motor 15
It is bolted to connection on motor erecting bed 124.
As a kind of technical solution of this patent selection, the inside of holder 19 is provided with several reinforcing ribs, to improve holder
19 intensity extends its service life.
The operation principle of the utility model is as follows：
On centrifuge install test model 3 after, by gravity-center adjustable counter weight device 1 be mounted on it is opposite with test model 3 from
2 end of scheming pivoted arm, the installation for isometric pivoted arm structure is as shown in Figure 1, its operating status is as shown in Figure 2.
Gravity-center adjustable counter weight device 1 is structure of independently establishing one's own system, and composition is as shown in Figure 3.
Before gravity-center adjustable counter weight device 1 is installed on centrifuge, first passes through motor 15 and mass block 17 is driven to return to and initially set
Fixed place (generally in stroke middle part position), is then installed on centrifuge.
According to the measurement result of centrifuge imbalance load cell, start motor 15, after allowing motor 15 to drive gear 14
Gear ring 16 is driven to rotate so that lead screw 122 rotates；The matter being mounted on its matching nut 121 is driven in 122 rotation process of lead screw
Gauge block 17 is axially moved, to realize the preliminary leveling of centrifuge.It is gradually run after centrifuge startup to work g value sections
Before, whether system is according to out-of-balance force measurement sensor survey calculation result to needing moving mass block 17 to send out instruction, you can
Realize automatic trim；At this point, also can artificial intervention, by artificially study and judge out-of-balance force resulting force curve variation, judge out-of-balance force
Whether value closes near dangerous values, so as to respond using motor 15 is early, avoids occurring in the continuous boosting velocity procedure of equipment uneven
Weighing apparatus power fluctuates widely.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all in this practicality
All any modification, equivalent and improvement etc., should be included in the guarantor of the utility model made by within novel spirit and principle
It protects in range.
Claims (7)
1. a kind of geotechnical centrifuge gravity-center adjustable counter weight device, which is characterized in that including：
Holder, the holder are cylinder cage structure, and one end is provided with the flange for being fixedly connected with centrifuge；
Lead screw, the lead screw are the cylindrical structure that the holder other end is installed on by Bearning mechanism, the Bearning mechanism packet
Bearing block and bearing are included, the bearing is installed between the lead screw and the bearing block, if the bearing block is installed with
The dry guide rod being mutually parallel, the guide rod arrange that the lead screw and the holder are coaxial, inner cylinder face along lead screw length direction
It is provided with motion thread；
Nut, the nut are the cylindrical structure being placed in inside the lead screw, and the nut is sleeved on the guide rod and can be past
Multiple mobile, external cylindrical surface is provided with motion thread and center location is provided with counterweight mounting hole, the motion thread of the nut
It is engaged with the motion thread of the lead screw；
Mass block, the mass block be cylindrical structure, be installed in the counterweight mounting hole of the nut, the mass block with
It is detachable fixed connection structure between the nut；
Gear ring, the gear ring are sleeved on the lead screw, and are positioned relative to the lead screw circumferential direction；
Gear, the gear are engaged with the gear ring；
Motor is fixedly installed on the holder, and the gear is mounted on the turning end of the motor.
2. geotechnical centrifuge gravity-center adjustable counter weight device according to claim 1, which is characterized in that the bearing block has two
A, one of bearing block is fixed on the bracket, and the both ends of the lead screw and two bearing blocks are both provided with ladder
The bearing mounting surface of shape is installed with bearing, the both ends of the guide rod between the both ends of the lead screw and two bearing blocks
It is individually fixed on two bearing blocks.
3. geotechnical centrifuge gravity-center adjustable counter weight device according to claim 2, which is characterized in that the bearing block by according to
The big ring part of secondary connection, middle circle canister portion and small ring part composition, the outer diameter of the small ring part, the middle circle canister portion
Outer diameter, the big ring part internal diameter be equal, the small ring part offers several guide rod installing holes for installation guide rod.
4. geotechnical centrifuge gravity-center adjustable counter weight device according to claim 2, which is characterized in that the both ends of the lead screw
It is respectively arranged with bearing protecting cover and transmission protecting cover, the gear and the gear ring are encapsulated in the transmission protecting cover, the lead screw
The bearing package of one end far from the holder is in the bearing protecting cover.
5. geotechnical centrifuge gravity-center adjustable counter weight device according to claim 1, which is characterized in that the outer shroud of the holder
Face is welded with motor erecting bed, and the motor is bolted to connection on the motor erecting bed.
6. geotechnical centrifuge gravity-center adjustable counter weight device according to claim 1, which is characterized in that the inside of the holder
It is provided with several reinforcing ribs.
7. geotechnical centrifuge gravity-center adjustable counter weight device according to claim 1, which is characterized in that the counterweight of the nut
In the mounting hole and cylindrical surface of the mass block is machined with ladder mounting surface, and the ladder mounting surface of the mass block is resisted against institute
It states on the ladder mounting surface of nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721517978.0U CN207722967U (en) | 2017-11-14 | 2017-11-14 | A kind of geotechnical centrifuge gravity-center adjustable counter weight device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721517978.0U CN207722967U (en) | 2017-11-14 | 2017-11-14 | A kind of geotechnical centrifuge gravity-center adjustable counter weight device |
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| Publication Number | Publication Date |
|---|---|
| CN207722967U true CN207722967U (en) | 2018-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721517978.0U Active CN207722967U (en) | 2017-11-14 | 2017-11-14 | A kind of geotechnical centrifuge gravity-center adjustable counter weight device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694771A (en) * | 2017-11-14 | 2018-02-16 | 中国工程物理研究院总体工程研究所 | A kind of geotechnical centrifuge gravity-center adjustable counter weight device |
| CN108961916A (en) * | 2018-09-07 | 2018-12-07 | 中国工程物理研究院总体工程研究所 | four-degree-of-freedom helicopter dynamic flight simulator |
-
2017
- 2017-11-14 CN CN201721517978.0U patent/CN207722967U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694771A (en) * | 2017-11-14 | 2018-02-16 | 中国工程物理研究院总体工程研究所 | A kind of geotechnical centrifuge gravity-center adjustable counter weight device |
| CN108961916A (en) * | 2018-09-07 | 2018-12-07 | 中国工程物理研究院总体工程研究所 | four-degree-of-freedom helicopter dynamic flight simulator |
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