CN201203405Y - Displacement measuring device for dilatometer - Google Patents
Displacement measuring device for dilatometer Download PDFInfo
- Publication number
- CN201203405Y CN201203405Y CNU2008200695674U CN200820069567U CN201203405Y CN 201203405 Y CN201203405 Y CN 201203405Y CN U2008200695674 U CNU2008200695674 U CN U2008200695674U CN 200820069567 U CN200820069567 U CN 200820069567U CN 201203405 Y CN201203405 Y CN 201203405Y
- Authority
- CN
- China
- Prior art keywords
- ball
- inner sleeve
- sliding
- sliding inner
- displacement
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model belongs to the mechanical measurement device and provides a displacement measuring device for a dilatometer comprising a main bracket (6), a specimen tube (4), a post rod (3), a ball sliding sleeve, a weight dropper (17) and a displacement sensor; the specimen tube (4) and a ball sliding sleeve body (7) are supported and fixed on the main bracket (6), one side of the post rod (3) contacts with one end of a specimen while the other end of the specimen is against the end cover of the specimen tube (4); the post rod (3) is connected to a sliding inner sleeve (8) of the ball sliding sleeve to form a linkage structure, a displacement probe (11) of the displacement sensor is connected to the sliding inner sleeve (8) to form a linkage structure; one end of a traction rope (16) is connected to the sliding inner sleeve (8) of the ball sliding sleeve (7), and the other end hangs the weight dropper (17) after passing a pulley. The displacement measuring device has advantages that the stress of specimen is stable, the specimen stress can be adjusted through changing the weight dropper mass; the motion resistance is small due to the short stroke sliding sleeve, the alignment is good; the operation is convenient and the device is easy to maintain.
Description
Technical field
The utility model belongs to mechanical measuring device, is specifically related to a kind of dilatometer displacement measuring device.
Background technology
In existing expansion instrument, the post rod type dilatometer occupies market widely because of its practicality, economy and accuracy.The post rod type dilatometer is the most representative with the instrument of the Germany and the U.S., but remain in shortcoming, as 402 serial dilatometers, the displacement measuring device of instrument is for adopting the slip medium of 6 bearing sliding sleeves as push rod, its front end is contacted for the push rod reinforcing with sample with spring, with of the displacement of displacement sensor push rod rear end with respect to the load sample pipe.The push rod of this instrument is good to neutrality, but has two shortcomings: the firstth, and spring will change along with the flexible of sample by the power that push rod is added to sample, and the contact pressure that promptly is added on the sample is unknowable, will have influence on the accuracy of test; Second is that the kinetic friction force of the sliding sleeve used of this instrument is bigger.And another kind of dilatometer, the slip medium of its push rod is a linear bearing, gives the push rod reinforcing with the mode of weight-adding hammer, it is constant making its contact pressure that adds to sample, do not become with the flexible of sample, the kinetic friction force of the linear bearing of this instrument is little, but bad to neutrality.
Summary of the invention
The purpose of this utility model is to propose a kind of dilatometer displacement measuring device, and it is had the characteristics that neutrality is good, friction force is little and the contact pressure of push rod and sample is constant.
The utility model is finished the technical scheme that its invention task taked: the dilatometer that is proposed mainly is made of main support, load sample pipe, push rod and ball sliding bush, weight and displacement transducer with displacement measuring device; Load sample pipe, ball sliding bush body are supported and fixed on the main support, an end of push rod and an end in contact of sample and the other end of sample is against on the end cap of load sample pipe; Push rod connects the formation linkage structure with the sliding inner sleeve of ball sliding bush, the displacement probe of displacement transducer connects the formation linkage structure with sliding inner sleeve; One end of traction rope connects the sliding inner sleeve of ball sliding bush, and its other end is hung with weight after by pulley.
Have overcoat on its body of described ball sliding bush, and between sliding inner sleeve and overcoat, have ball distance ring, three rounds are circumferentially arranged on its tube wall of ball distance ring and in every round, ball is set.
The sliding inner sleeve outside surface of described ball sliding bush has bar shaped V-type groove, put outward and set bar hole and the ball pressing plate has been set by the bar hole installation, has the V-type groove on the face of the relative sliding inner sleeve of ball pressing plate, wherein row's ball is positioned at the V-type groove of sliding inner sleeve, ball pressing plate, to guarantee that sliding inner sleeve does not produce the rotation with respect to overcoat when moving, other two row's balls constitute point and contact with outer casing internal diameter face, the outer diametric plane of interior cover.
Described pulley be positioned at the bar-shaped trough of displacement sensor bracket by pulley spindle and be positioned at its sliding inner sleeve of ball sliding bush under, traction rope by pulley to the sliding inner sleeve tie point be horizontal segment promptly with the sliding inner sleeve parallel axes, traction rope by pulley to the weight tie point be that vertical section is promptly perpendicular with the sliding inner sleeve axis.
The shell of displacement transducer links to each other with the overcoat of ball sliding bush, and its probe is used to measure the change in displacement of the interior cover of sliding sleeve with respect to overcoat, and this change in displacement is to shrink and cause owing to the expansion of sample, promptly records the expansion and the contraction of sample indirectly.
The interior cover of ball sliding bush is little and good to neutrality with the kinetic friction force of outer inner room.
Weight is used for to constant power of push rod, and the contact pressure that makes push rod and sample is constant.
The utility model has the advantages that: the stability under loading of sample, can adjust the stressed size of sample by the quality that changes weight; Adopt the short stroke sliding sleeve resistance of motion little, good to neutrality; Easy to operate, be easy to safeguard.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the ball sliding bush structural representation.
Fig. 4 is the A-A sectional view of Fig. 3
Among the figure, 1, sample, 2, thermopair, 3, push rod, 4, the load sample pipe, 5, load sample pipe gib screw, 6, main support, 7, the ball sliding bush body, 8, sliding inner sleeve, 9, the push rod gib screw, 10, the displacement probe gib screw, 11, displacement probe, 12, the displacement transducer body, 13, the displacement transducer gib screw, 14, displacement sensor bracket, 15, traction screw, 16, traction rope, 17, weight, 18, pulley spindle, 19, pulley, 20 joint bolts, 21, packing ring, 22, the sliding sleeve joint bolt, 31, back-up ring before the interior cover, 32, front apron, 33, preceding dust-proof cushion, 34, the baffle plate gib screw, 35, overcoat, 36, the ball pressing plate, 37, retainer, 38, first row ball, 39, backboard, 40, back dust-proof cushion, 41, the push rod trip bolt, 42, interior cover back back-up ring, 43, second row ball, 44, third row's ball, 45, ball pressing plate trip bolt.
Embodiment
The embodiment that provides in conjunction with the accompanying drawings is illustrated the utility model, but does not constitute any restriction of the present utility model:
As shown in Figure 1 and Figure 2, dilatometer described in the utility model with displacement measuring device mainly by main support 6, push rod 3, load sample pipe 4, ball sliding bush 7, displacement transducer body 12, displacement probe 11, weight 17 formations such as grade.
Main support 6 is used for supporting the part that instrument uses such as load sample pipe 4 and ball sliding bush body 7 are not moved.Load sample pipe 4 is fixed on the main support 6 by load sample pipe gib screw 5, and ball sliding bush body 7 connects with main support 6 by sliding sleeve joint bolt 22, is lined with packing ring 21 therebetween.One end of push rod 3 and an end in contact of sample, the other end of sample is against on the end cap of load sample pipe 4; The other end of push rod 3 connects with the sliding inner sleeve 8 of ball sliding bush by push rod gib screw 9, its other end also can be arranged in the endoporus of sliding inner sleeve 8 and connect with cover, the displacement probe 11 of displacement transducer links by the termination of displacement probe gib screw 10 with sliding inner sleeve 8, displacement transducer body 12 is fixed on the displacement sensor bracket 14 by displacement transducer gib screw 13, and displacement sensor bracket 14 is connected and fixed by joint bolt 20 and ball sliding bush body 7; Pulley spindle 18 is installed on displacement sensor bracket 14, is with rotary pulley 19 on the pulley spindle 18.Traction rope 16 enters in the groove of pulley 19, one end of traction rope 16 is hung with weight 17, the other end links by traction screw 15 and sliding inner sleeve 8, the effect of pulley 19 is that the gravity with weight 17 becomes the horizontal drag force to sliding inner sleeve 8, this power will be delivered to sample 1 by push rod 3, make push rod 3 keep the constant tracking contact pressure to sample 1.
In the utility model: main support 6, load sample pipe 4, ball sliding bush body 7, displacement sensor bracket 14, pulley spindle 18, displacement transducer body 12 connect together, be fixed part, when sample 1 expands drawdown deformation, push rod 3, sliding inner sleeve 8, displacement probe 11 and weight 17 will be moved.The deflection of sample 1 will be recorded by displacement transducer.Thermopair 2 is used to measure the specimen surface temperature.
As shown in Figure 3, Figure 4, described ball sliding bush mainly is made up of sliding inner sleeve 8, overcoat 35, ball pressing plate 36, ball and ball distance ring 37.
Sliding inner sleeve 8 cross sections are circular.Its outside surface has designed a bar shaped v type groove vertically.Its inside has a hole vertically, and push rod 3 can pass this hole and is fixed in this on cover 8 by push rod trip bolt 41, and the stroke effect of cover 8 in the restriction was played at the two ends of cover 8 in back-up ring 31 and interior cover back back-up ring 42 were stuck in before the sliding inner sleeve.The inside surface of overcoat 35 is rounded, and Qi Bishang has a bar hole that is used to install ball pressing plate 36.Ball pressing plate 36 by ball pressing plate trip bolt 45 be fixed on the overcoat 35 its mutually internally face of cover set v type groove, four holes are respectively arranged on front apron 32 and the backboard 39, be installed in the two ends of overcoat 35 respectively by baffle plate trip bolt 34, with skidding off of the retainer 37 that prevents to be equipped with on it ball, play the effect of the stroke of cover 8 in the restriction simultaneously.Preceding dust-proof cushion 33 is installed between front apron 32 and the interior cover 8, and back dust-proof cushion 40 is installed between backboard 39 and the interior cover 8, and dust-proof cushion prevents that mainly dust from entering the zone at ball place.
Be uniformly distributed with three rounds on the tube wall of retainer 37 along the circumference, promptly to cross the angle in retainer 37 centers of circle be 120 ° at the center of adjacent round, and the hole on every row is two, can respectively put into a ball.The retainer 37 that is placed with ball is installed between overcoat 35 and the interior cover 8.The v type groove of cover 8 in wherein first row ball 38 enters into, ball pressing plate 36 covers on this row ball, and promptly first row ball 38 is arranged in and overlaps 8 and the v type groove that set of ball pressing plate 36.Four holes are arranged on the ball pressing plate 36, link to each other with overcoat 35 by 4 ball pressing plate trip bolts 45.Second row ball 43 directly contacts with the inside surface of overcoat 35 and the outside surface of interior cover 8 with third row's ball 44.When interior cover 8 is done axially-movable with respect to overcoat 35, this ball will roll.
When using this sliding sleeve, should make the two ends of retainer 37 identical before using with the interval between front apron 32 and the backboard 39 as far as possible.The stroke that seesaws of cover 8 is basic identical in can making like this.The desirable installation of ball pressing plate is to make each ball pressure for minimum and can both roll simultaneously.If accomplish this point, this sliding sleeve fabulous to neutrality, interior cover 8 is done also minimum with respect to the axially-movable friction force of overcoat 35.
Even ball pressing plate 36 after installation, can't be eliminated the gap between ball and the interior overcoat fully, when this sliding sleeve horizontal application, because the deadweight effect of interior cover 8 and push rod 3 will make push rod produce automatic centering.The motion of push rod front end to neutrality also without a doubt.When interior cover 8 axially moves with respect to overcoat 35, except that the small part ball is unsettled, have most of ball and roll, the kinetic friction force of interior cover 8 is very little in the same old way.
Claims (4)
1, a kind of dilatometer displacement measuring device is characterized in that: mainly be made of main support (6), load sample pipe (4), push rod (3) and ball sliding bush, weight (17) and displacement transducer; Load sample pipe (4), ball sliding bush body (7) are supported and fixed on the main support (6), an end of push rod (3) and an end in contact of sample and the other end of sample is against on the end cap of load sample pipe (4); Push rod (3) connects the formation linkage structure with the sliding inner sleeve (8) of ball sliding bush, the displacement probe of displacement transducer (11) connects the formation linkage structure with sliding inner sleeve (8); One end of traction rope (16) connects the sliding inner sleeve (8) of ball sliding bush (7), and its other end is hung with weight (17) after by pulley.
2, a kind of dilatometer displacement measuring device according to claim 1, it is characterized in that: have overcoat (35) on its body of described ball sliding bush (7), and between sliding inner sleeve (8) and overcoat (35), have ball distance ring (37), three rounds are circumferentially arranged and in every round, ball is set on its tube wall of ball distance ring (37).
3, a kind of dilatometer displacement measuring device according to claim 1 and 2, it is characterized in that: the sliding inner sleeve of described ball sliding bush (8) outside surface has bar shaped V-type groove, set bar hole on the overcoat (35) and ball pressing plate (36) has been set by the bar hole installation, has the V-type groove on the face of the relative sliding inner sleeve (8) of ball pressing plate (36), wherein row's ball is positioned at the V-type groove of sliding inner sleeve (8), ball pressing plate (36), and other two row's balls constitute point with outer casing internal diameter face, the outer diametric plane of interior cover and contact.
4, a kind of dilatometer displacement measuring device according to claim 1, it is characterized in that: described pulley (19) be positioned at the bar-shaped trough of displacement sensor bracket (14) by pulley spindle (18) and be positioned at its sliding inner sleeve of ball sliding bush (8) under, traction rope (16) by pulley (19) to the sliding inner sleeve tie point be horizontal segment promptly with the sliding inner sleeve parallel axes, traction rope (16) by pulley to weight (17) tie point be that vertical section is promptly perpendicular with the sliding inner sleeve axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200695674U CN201203405Y (en) | 2008-03-12 | 2008-03-12 | Displacement measuring device for dilatometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200695674U CN201203405Y (en) | 2008-03-12 | 2008-03-12 | Displacement measuring device for dilatometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201203405Y true CN201203405Y (en) | 2009-03-04 |
Family
ID=40425718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200695674U Expired - Fee Related CN201203405Y (en) | 2008-03-12 | 2008-03-12 | Displacement measuring device for dilatometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201203405Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269562A (en) * | 2011-05-05 | 2011-12-07 | 上海伟星新型建材有限公司 | Macroscopic pipe linear expansion coefficient tester |
| CN103063254A (en) * | 2012-12-31 | 2013-04-24 | 苏州工业职业技术学院 | Measuring apparatus of displacements and pressures |
| CN104729444A (en) * | 2015-03-09 | 2015-06-24 | 宜昌南玻光电玻璃有限公司 | Device for monitoring relative displacement of annealing furnace slag box |
| CN104165576B (en) * | 2014-07-30 | 2016-08-24 | 长江勘测规划设计研究有限责任公司 | A kind of deep deformation monitoring device with apparent deformation measurement function |
| CN102269562B (en) * | 2011-05-05 | 2016-12-14 | 上海伟星新型建材有限公司 | Macroscopic pipe linear expansion coefficient tester |
-
2008
- 2008-03-12 CN CNU2008200695674U patent/CN201203405Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269562A (en) * | 2011-05-05 | 2011-12-07 | 上海伟星新型建材有限公司 | Macroscopic pipe linear expansion coefficient tester |
| CN102269562B (en) * | 2011-05-05 | 2016-12-14 | 上海伟星新型建材有限公司 | Macroscopic pipe linear expansion coefficient tester |
| CN103063254A (en) * | 2012-12-31 | 2013-04-24 | 苏州工业职业技术学院 | Measuring apparatus of displacements and pressures |
| CN104165576B (en) * | 2014-07-30 | 2016-08-24 | 长江勘测规划设计研究有限责任公司 | A kind of deep deformation monitoring device with apparent deformation measurement function |
| CN104729444A (en) * | 2015-03-09 | 2015-06-24 | 宜昌南玻光电玻璃有限公司 | Device for monitoring relative displacement of annealing furnace slag box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202720121U (en) | Precision miniature bearing dynamic performance testing device | |
| CN201203405Y (en) | Displacement measuring device for dilatometer | |
| CN102607375A (en) | Radial play measuring device for bearing | |
| CN108680357A (en) | A kind of axial and radial comprehensive dynamic stiffness measurement device of rolling bearing | |
| CN106769042B (en) | Cylindrical roller bearing dual-rotor testing machine | |
| CN204903163U (en) | Power self -balancing thrust bearing test bench structure | |
| CN109668596B (en) | Bearing retainer measuring device based on fiber bragg grating sensing | |
| CN202453184U (en) | Parameter measurement device for tapered roller bearing | |
| CN207923451U (en) | Thrust air hydrodynamic bearing test of bearing capacity device | |
| CN110243528B (en) | Six-dimensional force detection device based on liquid pressure measurement | |
| CN103499491A (en) | Multi-axial loading system and method | |
| CN216524564U (en) | Rotating roller body dynamic balance detection device | |
| CN102564664A (en) | Tapered roller bearing parameter measurement device | |
| CN106321077A (en) | Four-arm microelectrode measuring instrument for borehole diameters | |
| CN201891392U (en) | Four-arm and dual-roller centralizer | |
| CN104374350A (en) | Thickness detecting probe for wheel type pipeline detector | |
| CN101280802B (en) | Short stroke ball sliding bush | |
| CN104406498A (en) | Automatic measuring device for radial internal clearance of railway passenger car bearings | |
| CN201232707Y (en) | Short stroke ball sliding bush | |
| CN212658191U (en) | Road flatness detection device | |
| CN110044600B (en) | Movable horizontal hydraulic cylinder dead weight compensation test bed | |
| CN207850221U (en) | A kind of high speed motor car oil-pressure damper pressure cylinder end pulsation measurement cubing | |
| CN204359468U (en) | For the proving ring of multidirectional dynamometry ball shaped steel bearing | |
| CN114136804A (en) | Nonrust steel pipe bending resistance testing arrangement | |
| CN207050698U (en) | Extra-miniature bearing steel ball matches lubrication groove measurement apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20160312 |