CN209741937U - Vertical loading device for pile foundation model test - Google Patents
Vertical loading device for pile foundation model test Download PDFInfo
- Publication number
- CN209741937U CN209741937U CN201920141051.4U CN201920141051U CN209741937U CN 209741937 U CN209741937 U CN 209741937U CN 201920141051 U CN201920141051 U CN 201920141051U CN 209741937 U CN209741937 U CN 209741937U
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- loading
- shaft sleeve
- cross beam
- plane bearing
- threaded rod
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a vertical loading device for pile foundation model test, which comprises a loading screw rod, a plane bearing sleeve group and a reaction frame; the loading screw comprises a threaded rod, a limiting rod and a tension-compression sensor, and the plane bearing sleeve group comprises a loading hand wheel, a plane bearing, a nut shaft sleeve and a fixing bolt; two arms of the reaction frame are fixed with a field through a base, and vertical track guide grooves are formed in the inner sides of the two arms and matched with limiting rods, so that the loading screw rod only vertically displaces; the plane bearing sleeve group is fixed on the cross beam by using a fixing bolt, the threaded rod is matched with the nut shaft sleeve and penetrates through the cross beam through the through hole, the loading hand wheel is connected with the nut shaft sleeve, the nut shaft sleeve is driven to rotate by the loading hand wheel, and then the loading screw rod is lifted to realize vertical loading. The utility model discloses simple structure can realize the perpendicular loading process of pile foundation of big stroke and can realize simultaneously pulling out the loading of load and pushing down the load, and easily dismantle the installation, and the place suitability is strong.
Description
Technical Field
The utility model belongs to the technical field of pile foundation model test device, especially, relate to a perpendicular loading device for pile foundation model test.
Background
In practical engineering, the precast pile mainly has three pile sinking modes: the hammering method, the static force pressing-in method and the vibration pile sinking method are generally adopted under the large environment advocating safe and civilized construction in China, and have the advantages of low pile sinking noise, less environmental pollution, high construction efficiency and the like, so that the research on the pile forming process of the static force pressing-in pile and the mechanical characteristics after pile forming has important engineering application value.
However, in a pile foundation model test, the length of a model pile body is generally longer, a large-stroke vertical loading device is needed for realizing pile forming by a static press-in method, and a traditional loading device usually adopts a jack for loading, has short stroke and cannot meet the test requirement. In addition, in order to perform a bearing capacity test of the pile foundation, the loading device needs to complete the loading of the static load after the model pile is formed; the traditional loading device is difficult to simultaneously realize the loading of an upward pulling load and a downward pressing load, and the functionality of the loading device is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide a perpendicular loading device for pile foundation model test, can realize the static pressure method of impressing of big stroke among the pile foundation model test and become the stake to can realize pulling out the loading of load and pushing down the load in the bearing capacity test of pile foundation, simple structure, the place suitability is strong.
Realize the utility model discloses the technical solution of purpose does:
A vertical loading device for a pile foundation model test is characterized by comprising a loading screw rod, a plane bearing sleeve group and a reaction frame; the loading screw comprises a threaded rod, a limiting rod and a tension and compression sensor, the limiting rod is vertically intersected with the threaded rod and fixedly connected with the threaded rod, and the tension and compression sensor is arranged at the lower part of the threaded rod; the reaction frame is of a door-shaped structure formed by connecting a cross beam, a left arm and a right arm, vertical track guide grooves are respectively arranged on the opposite sides of the left arm and the right arm, and a cross beam through hole for a threaded rod to pass through is formed in the middle of the cross beam;
The planar bearing sleeve group comprises a loading hand wheel, a planar bearing and a nut shaft sleeve, the loading hand wheel is fixedly connected with the nut shaft sleeve, the nut shaft sleeve is provided with a threaded hole matched with the threaded rod, and the nut shaft sleeve is rotatably connected with the cross beam through the planar bearing; the threaded rod penetrates through a through hole of the cross beam and is in threaded connection with the nut shaft sleeve, two ends of the limiting rod are respectively arranged in the corresponding track guide grooves, and the nut shaft sleeve is driven to rotate through the loading hand wheel so as to lift the loading screw rod.
Furthermore, the left arm and the right arm of the reaction frame are respectively fixed with the field through the base.
furthermore, the plane bearing sleeve set also comprises a fixing bolt, the plane bearing comprises a shaft ring, an upper seat ring, a lower seat ring and two groups of balls, the shaft ring is fixed on the outer side wall of the nut shaft sleeve, and channels for mounting the balls are arranged on the upper side and the lower side of the shaft ring;
The upper seat ring and the lower seat ring are respectively arranged on the upper side and the lower side of the shaft ring and are rotationally connected with the shaft ring through balls; the upper seat ring and the lower seat ring are respectively provided with a through hole connected with a fixing bolt, a fixing hole connected with the fixing bolt is arranged on the cross beam, the fixing bolt penetrates through the through holes corresponding to the upper seat ring and the lower seat ring and the corresponding fixing holes on the cross beam, and the plane bearing and the nut shaft sleeve are fixed on the cross beam.
Further, the aperture of the through hole of the cross beam is larger than the outer diameter of the threaded rod.
The utility model discloses the track guide slot and the gag lever post of two arms about well match, make the loading screw rod only take place vertical displacement, loading hand wheel and nut shaft bushing, and the model stake of experimental use is fixed in the threaded rod bottom, and it is rotatory to drive the nut shaft sleeve through the loading hand wheel, and then the loading screw rod goes up and down, realizes perpendicular loading. The utility model discloses simple structure can realize the perpendicular loading process of pile foundation of big stroke and can realize simultaneously pulling out the loading of load and pushing down the load, and easily dismantle the installation, and the place suitability is strong.
Compared with the prior art, the utility model, it is showing the advantage and is:
1. Through the combination of the nut shaft sleeve and the plane bearing, the vertical loading of a large stroke in a pile foundation model test can be realized, and the static pressing-in method pile forming of a model pile with a longer pile body can be completed;
2. The plane bearing sleeve group comprises an upper plane bearing and a lower plane bearing, and vertical loading of an upper pulling load and a lower pressing load can be simultaneously realized by clockwise or anticlockwise rotating the loading hand wheel.
The utility model discloses the track guide slot and the gag lever post of two arms about well match, make the loading screw rod only take place vertical displacement, loading hand wheel and nut shaft bushing, and the model stake of experimental use is fixed in the threaded rod bottom, and it is rotatory to drive the nut shaft sleeve through the loading hand wheel, and then the loading screw rod goes up and down, realizes perpendicular loading. The utility model discloses simple structure can realize the perpendicular loading process of pile foundation of big stroke and can realize simultaneously pulling out the loading of load and pushing down the load, and easily dismantle the installation, and the place suitability is strong.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a reaction frame structure;
FIG. 3 is a schematic view of a loading screw;
FIG. 4 is a schematic view of a planar bearing set;
The device comprises a loading screw rod 1, a plane bearing sleeve group 2, a reaction frame 3, a threaded rod 11, a limiting rod 12, a tension-compression sensor 13, a loading hand wheel 21, a plane bearing 22, a nut shaft sleeve 23, a fixing bolt 24, a lower race 25, an upper race 26, a ball 27, a shaft race 28, a left arm 31, a right arm 32, a reaction frame beam 33, a track guide groove 34, a fixing base 35, a beam through hole 36 and a fixing hole 37.
Detailed Description
as shown in fig. 1, the utility model relates to a vertical loading device for pile foundation model test, including loading screw 1, plane bearing suit 2 and reaction frame 3.
as shown in fig. 2, the two arms 31, 32 of the reaction frame are fixed to the field through a fixing base 35, the inner sides of the two arms 31, 32 are provided with vertical rail guide grooves 34 and matched with a limiting rod, so that the loading screw rod only vertically displaces, and a cross beam 33 of the reaction frame is provided with a through hole 36 and a fixing hole 37.
As shown in fig. 3, the loading screw 1 includes a threaded rod 11, a limiting rod 12 and a tension and compression sensor 13, the threaded rod 11 vertically passes through a cross beam 33 through a through hole 36 on the cross beam 33, the limiting rod 12 is horizontally fixed on the threaded rod 11, two ends of the limiting rod are placed in guide grooves 34 on the reaction frame arms 31 and 32, and the tension and compression sensor 13 is fixed on the threaded rod 11.
As shown in fig. 4, the flat bearing set 2 includes a loading handwheel 21, a flat bearing 22, a nut sleeve 23 and a fixing bolt 24, wherein the flat bearing 22 includes a collar 28, an upper collar 26, a lower collar 25 and two sets of balls 27, the collar 28 is fixed on the nut sleeve 23, and both upper and lower sides of the collar have a channel, the inner wall of the nut sleeve 23 has an internal thread and is screwed with the threaded rod 11, the fixing bolt 24 passes through holes on the upper collar 26 and the lower collar 25 to be connected with a fixing hole 37 on the cross beam 33, the flat bearing 22 and the nut sleeve 23 are fixed on the cross beam 33, and the loading handwheel 21 is connected with the nut sleeve 23.
when the device is used, the reaction frame 3 and a field are fixed through the fixing base 35, the plane bearing sleeve set 2 is fixed on the cross beam 33, two ends of the limiting rod 12 are arranged in the track guide grooves 34 on the reaction frame arms 31 and 32, the threaded rod 11 is moved upwards to penetrate through the through hole 36 on the cross beam 33, and the nut shaft sleeve 23 is rotated to enable the threaded rod 11 to be connected with the threaded rod. Lifting and loading screw rod 1 to a proper height, fixing the model pile at the bottom end of threaded rod 11, connecting the signal conductor of tension-compression sensor 13, driving nut shaft sleeve 23 to rotate by clockwise or anticlockwise rotating hand wheel 21, and then lifting and loading screw rod 1, realizing vertical loading of pulling load and pushing load on the pile foundation.
when the utility model is used, the thread pitch of the threaded rod 11 and the nut shaft sleeve 23 can be changed, or the rotation speed of the loading hand wheel 21 is controlled, so as to realize different loading rates; in addition, the loading hand wheel 21 can be replaced by an electric loading device according to the test conditions, the same test effect can be achieved, and meanwhile, more accurate loading rate can be obtained. The utility model discloses different model grooves can arrange in pairs, and the place requires lowly, easily dismantles the installation, to general pile foundation model test, all can satisfy the vertical loading requirement.
Claims (4)
1. a vertical loading device for a pile foundation model test is characterized by comprising a loading screw rod (1), a plane bearing sleeve set (2) and a reaction frame (3); the loading screw comprises a threaded rod (11), a limiting rod (12) and a tension and compression sensor (13), the limiting rod and the threaded rod are perpendicularly intersected and fixedly connected, and the tension and compression sensor is arranged at the lower part of the threaded rod; the reaction frame is of a door-shaped structure formed by connecting a cross beam (33), a left arm (31) and a right arm (32), vertical track guide grooves (34) are respectively arranged on the opposite sides of the left arm and the right arm, and a cross beam through hole (36) for a threaded rod to pass through is formed in the middle of the cross beam;
The plane bearing sleeve group comprises a loading hand wheel (21), a plane bearing (22) and a nut shaft sleeve (23), the loading hand wheel is fixedly connected with the nut shaft sleeve, the nut shaft sleeve is provided with a threaded hole matched with the threaded rod, and the nut shaft sleeve is rotatably connected with the cross beam through the plane bearing; the threaded rod penetrates through a through hole of the cross beam and is in threaded connection with the nut shaft sleeve, two ends of the limiting rod are respectively arranged in the corresponding track guide grooves, and the nut shaft sleeve is driven to rotate through the loading hand wheel so as to lift the loading screw rod.
2. The vertical loading device for the pile foundation model test as claimed in claim 1, wherein the left arm and the right arm of the reaction frame are respectively fixed with the field through a base (35).
3. The vertical loading device for the pile foundation model test is characterized in that the plane bearing set further comprises a fixing bolt (24), the plane bearing (22) comprises a shaft ring (28), an upper seat ring (26), a lower seat ring (25) and two groups of balls (27), the shaft ring (28) is fixed on the outer side wall of the nut shaft sleeve, and channels for mounting the balls are arranged on the upper side and the lower side of the shaft ring;
the upper seat ring and the lower seat ring are respectively arranged on the upper side and the lower side of the shaft ring and are rotationally connected with the shaft ring through balls; the upper seat ring and the lower seat ring are respectively provided with a through hole connected with a fixing bolt, a fixing hole (37) connected with the fixing bolt is formed in the cross beam, the fixing bolt penetrates through the through holes corresponding to the upper seat ring and the lower seat ring and the corresponding fixing holes in the cross beam, and the plane bearing and the nut shaft sleeve are fixed on the cross beam.
4. The vertical loading device for the pile foundation model test is characterized in that the diameter of the beam through hole (36) is larger than the outer diameter of the threaded rod (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920141051.4U CN209741937U (en) | 2019-01-25 | 2019-01-25 | Vertical loading device for pile foundation model test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920141051.4U CN209741937U (en) | 2019-01-25 | 2019-01-25 | Vertical loading device for pile foundation model test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209741937U true CN209741937U (en) | 2019-12-06 |
Family
ID=68705057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920141051.4U Expired - Fee Related CN209741937U (en) | 2019-01-25 | 2019-01-25 | Vertical loading device for pile foundation model test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209741937U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719602A (en) * | 2020-06-30 | 2020-09-29 | 扬州大学 | Pile foundation model loading device under complex load effect |
| CN112461641A (en) * | 2020-12-08 | 2021-03-09 | 哈尔滨理工大学 | One-way thread transmission static force loading device |
-
2019
- 2019-01-25 CN CN201920141051.4U patent/CN209741937U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719602A (en) * | 2020-06-30 | 2020-09-29 | 扬州大学 | Pile foundation model loading device under complex load effect |
| CN111719602B (en) * | 2020-06-30 | 2022-03-22 | 扬州大学 | Pile foundation model loading device under complex load effect |
| CN112461641A (en) * | 2020-12-08 | 2021-03-09 | 哈尔滨理工大学 | One-way thread transmission static force loading device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |