CN218036046U - Clamping device for compression mechanical test in shield steel plate brush room - Google Patents
Clamping device for compression mechanical test in shield steel plate brush room Download PDFInfo
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- CN218036046U CN218036046U CN202221678289.9U CN202221678289U CN218036046U CN 218036046 U CN218036046 U CN 218036046U CN 202221678289 U CN202221678289 U CN 202221678289U CN 218036046 U CN218036046 U CN 218036046U
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Abstract
The utility model relates to a shield constructs experimental clamping device of indoor compression mechanics of steel sheet brush, the device include experimental bottom plate, experimental loading board and steel sheet brush clamping plate, experimental bottom plate be connected with universal machine base, experimental loading board be connected with universal machine loading crossbeam, steel sheet brush lower part is held between board and experimental bottom plate at the steel sheet brush clamping plate by the centre gripping, upper portion and experimental loading board pressure contact compare with prior art, the utility model has the advantages of be applicable to shield and construct steel sheet brush compression mechanics experiment, the structure is firm, easy operation.
Description
Technical Field
The utility model belongs to the technical field of shield constructs indoor compression test technique and specifically relates to a shield constructs indoor compression mechanical test clamping device of steel sheet brush.
Background
The shield technology is widely applied to the construction of subways and river-crossing channels due to the safety, rapidness and good stratum adaptability of the shield technology. In the shield construction process, a duct piece is protected by a shield shell before coming off a shield tail, a gap between the shield shell and the duct piece is sealed by a plurality of shield tail brushes, the common shield tail brushes are configured into a plurality of steel wire brushes or a plurality of steel wire brushes and a last steel plate brush, the axis of the shield machine cannot always be ensured to be coincident with the axis of a tunnel in the tunneling process of the shield machine, such as the turning and sinking of the shield machine, the distance between the shield shell and the duct piece is changed at the moment, uneven counter force can be applied to the duct piece by the extruded shield tail brushes, and the opening and the dislocation of the duct piece joints and the local damage of the duct piece can be possibly caused; in addition, excessive squeezing can also damage the shield tail brush, eventually leading to the failure of the shield tail seal and the occurrence of shield tail leakage accidents.
The steel plate brush is used as the last shield tail brush, the pressure borne by the steel plate brush and the counter force given to the duct piece are the largest, therefore, the compression mechanical property of the steel plate brush is very important for the safe tunneling of the shield and the safety of the duct piece structure, and the necessary condition for realizing the accurate, safe and efficient tunneling of the shield is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a shield constructs indoor compression mechanics test clamping device of steel sheet brush in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
the device comprises a test bottom plate, a test loading plate and a steel plate brush clamping plate, wherein the test bottom plate is connected with a universal tester base, the test loading plate is connected with a universal tester loading beam, the lower part of a steel plate brush is clamped between the steel plate brush clamping plate and the test bottom plate, and the upper part of the steel plate brush is in compression contact with the test loading plate.
The upper surface of the test loading plate is provided with a first fixing part which is a cylindrical protrusion matched with a groove on a loading cross beam of the universal testing machine in an inserting mode.
The lower surface of the test bottom plate is provided with a second fixing part which is a cylindrical protrusion matched with the groove in the universal testing machine base in an inserting mode.
The distance between the position of the second fixing component in the front-rear length direction of the test bottom plate and the front end of the test bottom plate is greater than the distance between the second fixing component and the rear end of the test bottom plate.
The steel plate brush clamping plate is rectangular, a rectangular groove is formed in the middle of the steel plate brush clamping plate and used for containing four pairs of bolts and nuts of the steel plate brush protruding out of the plane, and two second bolt holes are formed in the left side portion and the right side portion of the rectangular groove respectively.
The test bottom plate set up respectively near front end department with the first bolt hole that second bolt hole quantity and position all correspond, press from both sides the steel sheet brush fastening through bolt cooperation second bolt hole, first bolt hole and nut after and fix.
Two bolts located on the outer side sequentially penetrate through a first bolt hole of the test bottom plate, a hole of the steel plate brush and a second bolt hole in the steel plate brush clamping plate from bottom to top and then are fixed through nuts.
Two bolts located on the outer side sequentially penetrate through the first bolt hole of the test bottom plate and the second bolt hole of the steel plate brush clamping plate from bottom to top and then are fixed through nuts.
The first fixing part is welded at the central position of the test loading plate, and length reserve is reserved in the length deformation direction of the steel plate brush, so that the top of the whole steel plate brush is ensured to be in the range of the test loading plate in the loading process.
The test procedure for the device was as follows:
in the test process, firstly, a test base plate and a test loading plate are installed on a universal test machine, the universal test machine is started, the test loading plate is lifted to a sufficient height, a sufficient space is reserved for installing a steel plate brush, then the steel plate brush is placed on the test base plate, the test base plate is fixed through a steel plate brush clamping plate, bolts and nuts, finally, the universal test machine is adjusted, the test loading plate is downwards adjusted to be just in contact with the top of the steel plate brush, the test is started, the test loading plate applies load in a grading mode in the test process, the test loading plate is continuously pressed down until the steel plate brush is damaged, through displacement and a pressure sensor of the universal test machine, the counter force and the displacement of a jack are measured, the load deformation curve of the steel plate brush under pressure is obtained, and a mechanical model is obtained.
Compared with the prior art, the utility model has the advantages of it is following:
the utility model provides a pair of shield constructs steel plate brush compression mechanical test clamping device can realize the indoor compression test of steel plate brush, obtains the mechanical properties of steel plate brush, provides reliable foundation for the load that the section of jurisdiction receives in the shield construction to the shield tail that prevention steel plate brush destroys the result is sealed to become invalid, guarantees the reasonable safety of shield construction, the utility model discloses can also combine with existing testing machine, utilize the sensor of testing machine, measure and take notes the relevant data such as atress, the displacement of steel plate brush in compression process to can compress mechanical test through indoor steel plate brush, the pressurized process and the failure mode of analysis steel plate brush.
Drawings
Fig. 1 is a front view of the middle test loading plate of the present invention.
Fig. 2 is a top view of the middle test loading plate of the present invention.
Fig. 3 is a front view of the middle test base plate of the present invention.
Fig. 4 is a top view of the middle test base plate of the present invention.
Fig. 5 is a front view of the middle steel plate holding plate of the present invention.
Fig. 6 is a top view of the middle steel plate holding plate of the present invention.
Fig. 7 is a schematic view of the overall structure of the present invention.
The notation in the figure is:
1. the test loading plate comprises a test loading plate 2, a test base plate 3, a steel plate brush clamping plate 4, bolts 5, nuts 6, a test steel plate brush 7, a first fixing part 8, a second fixing part 9, first bolt holes 10, grooves 11 and second bolt holes.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can be implemented or applied by other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
It should be understood that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions of the present invention, so that the present invention does not have the substantial technical significance, and the modification of any structure, the change of the proportion relation or the adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention.
As shown in fig. 1-7, the utility model provides a shield constructs steel sheet brush compression mechanics test clamping device, the device is including experimental load plate 1, experimental bottom plate 2, steel sheet brush grip plate 3, supporting bolt 4 and nut 5, experimental load plate 1 is connected with the testing machine entablature, experimental bottom plate 2 is connected with the testing machine base, experimental bottom plate 2 and steel sheet brush grip plate 3 pass through bolt 4 and nut 5 and are connected, fix 6 centre gripping of steel sheet brush between the two, need pass the steel sheet brush hole because of the clamping device bolt, so be equipped with first bolt hole 9 and second bolt hole 11 among the clamping device, the bolt hole all needs to suit with this hole with bolt 4's size. The utility model discloses a shield shell is simulated to experimental bottom plate 2, adopts experimental loading plate 1 to simulate the section of jurisdiction, and whole clamping device guarantees that steel scrubber 6 can stabilize the pressurized in the compression mechanics test process of eccentric compression.
The first fixing part 7 for embedding the loading beam of the testing machine is welded on the test loading plate 1, the width of the test loading plate 1 is required to be larger than that of the brush head of the steel plate brush, and because the steel plate brush 6 can deform in the loading process, especially in the length direction of the steel plate brush, enough length is reserved for the test loading plate 1 to be 400mm long, and the brush head of the whole steel plate brush 6 is ensured to be within the range of the test loading plate 1 in the loading process.
Be equipped with a second fixed part 8 and four first bolt holes 9 that are used for connecting that are used for imbedding the tester base on the experimental bottom plate 2, the welding of second fixed part 8 is in experimental bottom plate 2 bottom surface, its shape, length and test bench suit, when used testing device is universal tester, this part is diameter 25mm, long 30 mm's cylinder, 8 positions of second fixed part are guaranteed in steel sheet brush compression performance is experimental, unstability can not appear under eccentric condition in experimental bottom plate 2, first bolt hole 9 diameter, the position matches with the hole of steel sheet brush 6, and guarantee that steel sheet brush top brush head is located loading device's center.
A square groove 10 and four second bolt holes 11 for connection are formed in the steel plate brush clamping plate 3, the square groove 10 is used for accommodating four pairs of bolts and nuts of the protruding plane of the steel plate brush 6, and the positions and the sizes of the four second bolt holes 11 correspond to those of the first bolt holes 9.
The bolts 4 and the nuts 5 are matched with the bolt holes, the two bolts 4 on the inner side sequentially penetrate through the first bolt holes 9 of the test bottom plate 2, the holes of the steel plate brushes 6 and the second bolt holes 11 in the steel plate brush clamping plate 3 from bottom to top, the two bolts on the outer side sequentially penetrate through the first bolt holes 9 of the test bottom plate 2 and the second bolt holes 11 in the steel plate brush clamping plate 3 from bottom to top, and then the upper ends of the bolts 4 are fixed by the nuts 5.
Examples
The embodiment provides a clamping device for a compression mechanical test of a shield steel plate brush, as shown in fig. 7, the clamping device comprises a test loading plate 1, a test bottom plate 2, a steel plate brush clamping plate 3, a matched bolt 4 and a nut 5, wherein the loading plate 1 and the test bottom plate 2 of the clamping device are respectively installed on a universal testing machine, the test steel plate brush 6 is fixed on the bottom plate 2 through the clamping plate 3, the bolt 4 and the nut 5, one end for fixing the steel plate brush 6 is the front end of the clamping device, and because the bolt of the clamping device needs to penetrate through a hole with the diameter of 15mm on the steel plate brush, the sizes of all bolt holes and the bolt 4 in the clamping device need to be matched with the hole, the clamping device is fixedly connected with the universal testing machine to perform the compression mechanical test of the steel plate brush, the displacement and the pressure sensor of the universal testing machine are utilized to measure the counter force and the displacement of a jack, a load deformation curve of the steel plate brush under pressure is obtained, the stress process of the steel plate brush is analyzed, and a mechanical model is obtained and is applied to shield construction numerical simulation.
The length of the test loading plate 1 of the clamping device is 400mm, the width of the test loading plate 1 is 350mm, the thickness of the test loading plate is 10mm, the length of the test loading plate is 30mm, the diameter of the test loading plate is 25mm, the test loading plate is a cylindrical first fixing part 7, and the first fixing part is matched with a groove in a loading beam of a universal testing machine.
The length of the test base plate 2 of the clamping test device is 450mm, the width of the test base plate is 400mm, the thickness of the test base plate is 20mm, the length of the test base plate is 30mm when the test base plate is 345mm away from the front end of the test base plate 2, the diameter of the test base plate is 25mm, the test base plate is matched with a groove in a universal tester base, the test base plate 2 is installed on the universal tester base through the second fixing part 8, the steel plate brush 6 is longer in size, the distance between the second fixing part 8 and the front end of the test base plate 2 is longer, it is guaranteed that the upper brush head of the steel plate brush 6 is located in the center of a loading plate in the test process, two first bolt holes 9 with the diameter of 15mm are formed in the two sides of the steel plate brush on the base plate, and the center of the first bolt holes 9 is 50mm away from the front end of the test base plate 2.
Clamping device's 3 long 400mm of steel sheet brush holding plate, wide 90mm, 20mm thick, a square groove 10 has been seted up in the middle of the board and 2 second bolt holes 11 have been seted up respectively in the square groove 10 left and right sides, groove 10 is long 200mm, wide 35mm, width direction center is apart from the holding plate front end 52.5mm, it is corresponding with four outstanding bolt's on the steel sheet brush 6 position, 11 diameter 15mm in four second bolt holes, the hole site corresponds with the bottom plate hole site, utilize four M14 bolts 8 with length 300mm, wide 300mm, the steel sheet brush of height 270mm presss from both sides tightly between steel sheet brush holding plate 3 and experimental bottom plate 2.
In the test process, firstly, the test base plate 2 and the test loading plate 1 are installed on a universal testing machine, then the testing machine is started, the test loading plate 1 is lifted to a sufficient height, a sufficient space is reserved for installing the steel plate brush 6, then the steel plate brush is placed on the test base plate 2, the test base plate is fixed through the steel plate brush clamping plate 3, the bolt 4 and the nut 5, finally, the testing machine is adjusted universally, the test loading plate 1 is lowered to be just contacted with the top of the steel plate brush 6, the test can be started, the test loading plate 1 applies load in a grading mode in the test process, and the test loading plate 1 is pressed continuously until the steel plate brush is damaged.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. The clamping device for the compression mechanics test in the shield steel plate brush room is characterized by comprising a test bottom plate (2), a test loading plate (1) and a steel plate brush clamping plate (3), wherein the test bottom plate (2) is connected with a universal tester base, the test loading plate (1) is connected with a universal tester loading beam, the lower part of a steel plate brush (6) is clamped between the steel plate brush clamping plate (3) and the test bottom plate (2), and the upper part of the steel plate brush is in compression contact with the test loading plate (1).
2. The clamping device for the indoor compression mechanical test of the shield steel plate brush according to claim 1, wherein a first fixing part (7) is arranged on the upper surface of the test loading plate (1), and the first fixing part (7) is a cylindrical protrusion which is in inserted fit with a groove on a loading cross beam of a universal testing machine.
3. The clamping device for the indoor compression mechanical test of the shield steel plate brush according to claim 1, wherein a second fixing part (8) is arranged on the lower surface of the test base plate (2), and the second fixing part (8) is a cylindrical protrusion which is in plug fit with a groove on a base of a universal testing machine.
4. The clamping device for the indoor compression mechanical test of the shield steel plate brush according to claim 3, wherein the distance from the position of the second fixing part (8) in the front-rear length direction of the test base plate (2) to the front end of the test base plate (2) is greater than the distance from the position of the second fixing part to the rear end of the test base plate (2).
5. The shield steel plate brush indoor compression mechanical test clamping device as claimed in claim 1, wherein the steel plate brush clamping plate (3) is rectangular, a rectangular groove (10) is formed in the middle of the steel plate brush clamping plate for accommodating four pairs of bolts and nuts of the steel plate brush (6) protruding out of the plane, and two second bolt holes (11) are formed in the left side portion and the right side portion of the rectangular groove (10).
6. The clamping device for the shield steel plate brush indoor compression mechanics test according to claim 5, wherein the test bottom plate (2) is provided with first bolt holes (9) corresponding to the second bolt holes (11) in number and position near the front end, and the steel plate brush (6) is clamped and fixed after the bolts (4) are matched with the second bolt holes (11), the first bolt holes (9) and the nuts (5).
7. The clamping device for the shield steel plate brush indoor compression mechanical test according to claim 6, wherein two bolts (4) located on the outer side sequentially penetrate through a first bolt hole (9) of the test bottom plate (2), a hole of the steel plate brush (6) and a second bolt hole (11) in the steel plate brush clamping plate (3) from bottom to top and then are fixed through a nut (5).
8. The clamping device for the indoor compression mechanical test of the shield steel plate brush as claimed in claim 6, wherein two bolts located on the outer side sequentially penetrate through the first bolt hole (9) of the test bottom plate (2) and the second bolt hole (11) of the steel plate brush clamping plate (3) from bottom to top and are fixed through the nut (5).
9. The clamping device for the indoor compression mechanical test of the shield steel plate brush as claimed in claim 2, wherein the first fixing part (7) is welded at the central position of the test loading plate (1), and a length reserve is reserved in the length deformation direction of the steel plate brush (6) so as to ensure that the top of the whole steel plate brush is within the range of the test loading plate (1) in the loading process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221678289.9U CN218036046U (en) | 2022-06-30 | 2022-06-30 | Clamping device for compression mechanical test in shield steel plate brush room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221678289.9U CN218036046U (en) | 2022-06-30 | 2022-06-30 | Clamping device for compression mechanical test in shield steel plate brush room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218036046U true CN218036046U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221678289.9U Active CN218036046U (en) | 2022-06-30 | 2022-06-30 | Clamping device for compression mechanical test in shield steel plate brush room |
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| Country | Link |
|---|---|
| CN (1) | CN218036046U (en) |
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2022
- 2022-06-30 CN CN202221678289.9U patent/CN218036046U/en active Active
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