CN108731933B - Test head assembly for loading tail beams or shield beams and hydraulic support test bed - Google Patents
Test head assembly for loading tail beams or shield beams and hydraulic support test bed Download PDFInfo
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- CN108731933B CN108731933B CN201810739644.0A CN201810739644A CN108731933B CN 108731933 B CN108731933 B CN 108731933B CN 201810739644 A CN201810739644 A CN 201810739644A CN 108731933 B CN108731933 B CN 108731933B
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- 238000001514 detection method Methods 0.000 abstract description 4
- 239000003245 coal Substances 0.000 description 12
- 238000005457 optimization Methods 0.000 description 8
- 238000005065 mining Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a test head assembly for loading a tail beam or a shield beam and a hydraulic support test bed, wherein the test head assembly comprises a hydraulic cylinder hinged on the hydraulic support test bed, one end of the hydraulic cylinder, which is far away from the hinged position of the hydraulic cylinder and the hydraulic support test bed, is provided with a loading head, the loading head is provided with a loading part for pushing the tail beam or the shield beam to load, and the test head assembly also comprises an angle adjusting structure for adjusting the swing angle of the hydraulic cylinder to enable the loading head to be opposite to the tail beam or the shield beam to load. The test head assembly is arranged on the supporting seat, so that the hydraulic cylinder pushes the loading head to carry out a loading test on the tail beam or the shield beam, the strength detection of the tail beam or the shield beam is finished, the loading head is loaded from top to bottom to meet the actual working condition, and the measured result is accurate; meanwhile, the angle adjusting structure can adjust the swing angle of the hydraulic cylinder so as to realize that the loading head is opposite to the tail beam or the shield beam for loading test.
Description
Technical Field
The invention relates to a test head assembly for loading a tail beam or a shield beam and a hydraulic support test bed.
Background
The comprehensive mechanized mining of the caving coal is to arrange a fully mechanized mining working face at the bottom of a mining coal bed. The hydraulic support for caving coal is one of the most important devices for caving coal comprehensive mechanized mining, and the performance of the hydraulic support directly influences the development of caving coal comprehensive mechanized mining. The tail beam or the shield beam of the hydraulic top coal caving support is an important part of the middle-low level top coal caving support, and can support and block falling coal blocks, so that the normal operation of the coal conveyor is ensured. Therefore, the tail beams and the shield beams of the caving coal must be subjected to a strength loading test to examine the strength characteristics thereof.
Disclosure of Invention
The invention aims to provide a test head assembly capable of performing strength test on a tail beam or a shield beam; the invention also aims to provide a hydraulic support test bed using the test head assembly.
In order to achieve the above purpose, the technical scheme of the test head assembly of the invention is as follows:
the test head assembly comprises a hydraulic cylinder hinged to the hydraulic support test bed, a loading head is arranged at one end, away from the hinged position of the hydraulic cylinder and the hydraulic support test bed, of the hydraulic cylinder, the loading head is provided with a loading part for pushing the tail beam or the shield beam to load, and the test head assembly further comprises an angle adjusting structure for adjusting the swing angle of the hydraulic cylinder to enable the loading head to be opposite to the tail beam or the shield beam to load.
The angle adjusting structure comprises an adjusting rod, one end of the adjusting rod is hinged with the hydraulic cylinder, and the other end of the adjusting rod is assembled on the hydraulic support test bed in an adjustable mounting position.
The angle adjusting structure further comprises a hinge seat hinged with the adjusting rod, and the adjusting rod is assembled on the hydraulic support test bed through the adjustable mounting position of the hinge seat.
The adjusting rod is a jack.
The loading head is of a long plate structure, the number of the hydraulic cylinders is at least two, and the hydraulic cylinders are uniformly distributed along the length direction of the loading head.
The side surface of one side, which is away from the hinged position of the hydraulic cylinder and the loading head, of the loading head is defined as a loading surface, a loading block is convexly arranged on the loading surface, and the loading block forms the loading part.
The loading block is assembled on the loading surface along the length direction of the long plate in an adjustable mounting position.
The loading surface is provided with a plurality of groups of loading block fixing holes for forming loading block mounting positions along the length direction of the loading head, and the loading blocks are assembled on the loading surface through the adjustable mounting positions of the loading block fixing holes.
In order to achieve the above purpose, the technical scheme of the hydraulic support test stand of the invention is as follows:
the hydraulic support test bed comprises a supporting seat, a test head assembly is arranged on the supporting seat, the test head assembly comprises a hydraulic cylinder hinged to the hydraulic support test bed, a loading head is arranged at one end, away from the hinged position of the hydraulic cylinder and the hydraulic support test bed, of the hydraulic cylinder, the loading head is provided with a loading part for jacking a tail beam or a shield beam to load, and the test head assembly further comprises an angle adjusting structure for adjusting the swing angle of the hydraulic cylinder to enable the loading head to be opposite to the tail beam or the shield beam to load.
The angle adjusting structure comprises an adjusting rod, a plurality of adjusting rod installation positions are arranged on the supporting seat, one end of the adjusting rod is hinged with the hydraulic cylinder, and the other end of the adjusting rod is assembled on the adjusting rod installation positions in an adjustable mode. The adjusting rod is simple in structure and convenient to assemble.
The angle adjusting structure further comprises a hinge seat hinged with the adjusting rod, and the adjusting rod is assembled on the adjusting rod mounting position in an adjustable mode through the hinge seat mounting position. The hydraulic cylinder can be adjusted at a larger angle to realize that the loading head is opposite to the tail beam or the shield beam for loading test.
The adjusting rod is a jack. The loading head can be opposite to the tail beam or the shield beam through fine adjustment of the jack.
The loading head is of a long plate structure, the number of the hydraulic cylinders is at least two, and the hydraulic cylinders are uniformly distributed along the length direction of the loading head. The stress balance of the tail beam or the shield beam is ensured.
The side surface of one side, which is away from the hinged position of the hydraulic cylinder and the loading head, of the loading head is defined as a loading surface, a loading block is convexly arranged on the loading surface, and the loading block forms the loading part. The loading block has an approximate structure with the coal block, and the test is relatively close to the actual working condition.
The loading block is assembled on the loading surface along the length direction of the long plate in an adjustable mounting position.
The loading surface is provided with a plurality of groups of loading block fixing holes for forming loading block mounting positions along the length direction of the loading head, and the loading blocks are assembled on the loading surface through the adjustable mounting positions of the loading block fixing holes. So as to adapt to tail beams or shield beams with different widths.
The supporting seat is provided with a top beam loading box, and the test head assembly is arranged on the top beam loading box. The test head assembly can move along with the top beam loading box, and the adjusting rod can be adjustably fixed by utilizing the T-shaped groove on the top beam loading box, so that the structure is simplified.
The beneficial effects of the invention are as follows: the test head assembly is arranged on the supporting seat, so that the hydraulic cylinder pushes the loading head to carry out a loading test on the tail beam or the shield beam, the strength detection of the tail beam or the shield beam is finished, the loading head is loaded from top to bottom to meet the actual working condition, and the measured result is accurate; meanwhile, the angle adjusting structure can adjust the swing angle of the hydraulic cylinder so as to realize that the loading head is opposite to the tail beam or the shield beam for loading test, thereby ensuring the accuracy of test results.
Drawings
FIG. 1 is a schematic view of a hydraulic mount test stand according to embodiment 1 of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a right side view of FIG. 1;
FIG. 4 is a schematic view of the structure of a test head assembly of embodiment 1 of the hydraulic mount test stand of the present invention;
fig. 5 is a schematic structural view of another perspective of the test head assembly of embodiment 1 of the hydraulic mount test stand of the present invention.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
In the specific embodiment 1 of the hydraulic support test bed, as shown in fig. 1 to 5, the hydraulic support test bed comprises a base 8 and a stand column 9 arranged on the base 8, wherein a top beam loading box 1 capable of lifting up and down along the stand column 9 is assembled on the stand column 9, the base 8, the stand column 9 and the top beam loading box 1 form a supporting seat, a test head assembly 10 is arranged on the top beam loading box 1, the test head assembly can move up and down along with the top beam loading box, a slideway is not required to be independently arranged for the test head assembly to move up and down, the structure is simplified, and the function of the top beam loading test can be realized. In other embodiments, the test head assembly is disposed directly on the post. As shown in fig. 1 and 2, the test head assembly 10 is disposed at one end of the top beam loading box 1, the test head assembly 10 includes a hydraulic cylinder 6 hinged on the top beam loading box 1 and an angle adjusting structure for adjusting the swing angle of the hydraulic cylinder 6 so that the loading head is opposite to the tail beam or the shield beam, one end of the hydraulic cylinder 6 away from the hinged position of the hydraulic cylinder 6 and the top beam loading box 1 is provided with a loading head 4, and the loading head 4 is provided with a loading part for loading the tail beam or the shield beam. The test head assembly is arranged on the supporting seat, so that the hydraulic cylinder pushes the loading head to carry out a loading test on the tail beam or the shield beam, the strength detection of the tail beam or the shield beam is finished, the loading head is loaded from top to bottom to meet the actual working condition, and the measured result is accurate; meanwhile, the angle adjusting structure can adjust the swing angle of the hydraulic cylinder so as to realize that the loading head is opposite to the tail beam or the shield beam for loading test.
As shown in fig. 4 and 5, in this embodiment, the angle adjusting structure includes an adjusting rod 2, one end of the adjusting rod 2 is hinged with the hydraulic cylinder 6, and the other end of the adjusting rod is adjustably assembled on the top beam loading box 1, and the adjusting rod has a simple structure and is convenient to assemble. In other embodiments, the adjustment structure is a telescopic cylinder, and the load angle of the hydraulic cylinder is changed by adjusting the telescopic cylinder. In this embodiment, the one end of adjusting the pole 2 far away from pneumatic cylinder 6 is equipped with articulated seat 7, adjust the pole 2 and pass through articulated seat 7 adjustable assembly on roof beam loading case 1, articulated seat 7 includes fixed plate 71 and set up on fixed plate 71 and perpendicular fixed plate 71's two parallel hinged plate 72, the one end of adjusting the pole 2 far away from pneumatic cylinder 6 is located between two hinged plate 72 and articulates with two hinged plate 72, be equipped with fixing bolt on the fixed plate 71, articulated seat 7 passes through fixing bolt adjustable fixing on roof beam loading case 1, be equipped with on roof beam loading case 1 and supply fixing bolt to pass in order to fix the T type groove on roof beam loading case 1 with articulated seat 7, T type groove has constituted the regulation pole installation position, T type groove is provided with a plurality of, make articulated seat adjust different positions and carry out angle adjustment to the pneumatic cylinder, realize the loading test to tail boom or shield beam under any operating angle. In this embodiment, the adjusting rod 2 is a jack, and the loading head can be made to face the tail beam or the shield beam through fine adjustment of the jack. In other embodiments, the adjustment rod is a hydraulic cylinder; or the adjusting rod is a rod piece which can not be telescopic.
In this embodiment, a ball head 5 is disposed at one end of the hydraulic cylinder 6 for pressing the loading head 4, and the direction of the loading force can be ensured to be perpendicular to the loading head by pressing the loading head 4 by the ball head 5, so as to prevent deflection during loading. In other embodiments, no ball head may be provided. The loading head 4 in this embodiment is a long plate structure, the number of the hydraulic cylinders 6 is two, and the two hydraulic cylinders 6 are respectively arranged at two ends of the long plate to ensure that the stress of the tail beam or the shield beam is balanced. In other embodiments, the number of hydraulic cylinders is one or more than three. In this embodiment, the loading block 3 is convexly arranged on the side surface of one side of the loading head 4, which is away from the hinged position of the hydraulic cylinder 6 and the loading head 4, the side surface of the loading block 3 forms a loading surface, the loading block 3 forms the loading part, the loading block is similar to the coal block in structure, the test is relatively close to the actual working condition, and the obtained test result is relatively accurate. In other embodiments, the load block may not be provided on the load head. The number of the loading blocks 3 is two and the loading blocks are uniformly distributed on the loading head, and in other embodiments, one or more than three loading blocks can be set according to the size of the loading surface. As shown in fig. 3, in this embodiment, the loading head 4 is provided with a plurality of loading block fixing holes 11 for forming loading block mounting positions along the length direction of the loading head, and the position of the loading block 3 can be adjusted along the length direction of the loading head 4 through the loading block fixing holes 11 so as to adapt to tail beams or shield beams with different widths. In other embodiments, long holes extending in the length direction of the loading head may be provided instead of the plurality of loading block fixing holes; or the load block cannot be adjusted on the load surface.
The above embodiment 1 is a best mode of the hydraulic support test stand of the present invention, and in other embodiments, the corresponding structure may be adjusted or simplified as needed.
In a further optimization of embodiment 1, the hydraulic support test stand according to embodiment 2 of the present invention includes a support base, on which a test head assembly is provided, the test head assembly includes a hydraulic cylinder hinged to the hydraulic support test stand, one end of the hydraulic cylinder away from a hinge position of the hydraulic cylinder and the hydraulic support test stand is provided with a loading head, the loading head includes a loading portion for pressing against the tail beam or the shield beam for loading, and the test head assembly further includes an angle adjusting structure for adjusting a swing angle of the hydraulic cylinder so that the loading head is opposite to the tail beam or the shield beam for loading. The test head assembly is arranged on the supporting seat, so that the hydraulic cylinder pushes the loading head to carry out a loading test on the tail beam or the shield beam, the strength detection of the tail beam or the shield beam is finished, the loading head is loaded from top to bottom to meet the actual working condition, and the measured result is accurate; meanwhile, the angle adjusting structure can adjust the swing angle of the hydraulic cylinder so as to realize that the loading head is opposite to the tail beam or the shield beam for loading test, thereby ensuring the accuracy of test results.
In order to simplify the structure, in the embodiment of the invention, the angle adjusting structure includes an adjusting rod, a plurality of adjusting rod mounting positions are arranged on the supporting seat, one end of the adjusting rod is hinged with the hydraulic cylinder, and the other end of the adjusting rod is assembled on the adjusting rod mounting position in an adjustable manner. In other embodiments, an adjusting structure mounting position is arranged on the supporting seat, the adjusting structure is a telescopic cylinder, and two ends of the telescopic cylinder are respectively hinged with the hydraulic cylinder and the adjusting rod supporting seat.
In the embodiment 4 of the hydraulic support test stand according to the present invention, as a further optimization of the embodiment 3, in order to enable the hydraulic cylinder to be adjusted at a larger angle to enable the loading head to perform the loading test on the tail boom or the shield boom, in this embodiment, the angle adjusting structure further includes a hinge seat hinged with the adjusting rod, and the adjusting rod is assembled on the adjusting rod mounting position through the hinge seat mounting position being adjustable. In other embodiments, the hinge seat may not be provided, and one end of the adjusting lever is directly hinged to the adjusting lever mounting position.
In the embodiment 5 of the hydraulic support test stand according to the present invention, as a further optimization of the embodiment 3, in order to enable fine adjustment of the hydraulic cylinder so that the loading head faces the tail beam or the shield beam, in this embodiment, the adjusting rod is a jack. In other embodiments, the adjustment rods are non-telescoping rods.
In the embodiment 6 of the hydraulic support test stand according to the present invention, as a further optimization of any one of embodiments 2 to 5, in order to ensure the balance of the stress of the tail boom or the shield boom, in this embodiment, the loading head is of a long plate structure, the number of the hydraulic cylinders is at least two, and each hydraulic cylinder is uniformly distributed along the length direction of the loading head. In other embodiments, the number of hydraulic cylinders is one.
In the embodiment 7 of the hydraulic support test stand according to the present invention, as a further optimization of the embodiment 6, in order to make the test approach to the actual working condition, in this embodiment, a side surface defining a side of the loading head facing away from the hinge position of the hydraulic cylinder and the loading head is a loading surface, and the loading surface is convexly provided with a loading block, where the loading block forms the loading portion. In other embodiments, no loading blocks are provided on the loading surface, through which the tail boom or shield boom is loaded.
In the embodiment 8 of the hydraulic support test stand according to the present invention, as a further optimization of the embodiment 7, in order to accommodate tail beams or shield beams with different widths, in this embodiment, the loading blocks are mounted on the loading surface in an adjustable position along the length direction of the long plate. In other embodiments, the mounting location of the loading block is not adjustable.
In the embodiment 9 of the hydraulic support test stand according to the present invention, as a further optimization of the embodiment 8, in order to facilitate fixing of the loading block, in this embodiment, a plurality of groups of loading block fixing holes for forming a loading block mounting position are provided on the loading surface along a length direction of the loading head, and the loading block is mounted on the loading surface through the loading block fixing holes in a position-adjustable manner. In other embodiments, the loading surface extends along the length of the loading head to form an elongated aperture for the loading block mounting location.
In the embodiment 10 of the hydraulic support test stand according to the present invention, as a further optimization of any one of the embodiments 2 to 5, in order to simplify the structure, in this embodiment, the support base is provided with a top beam loading box, and the test head assembly is disposed on the top beam loading box. In other embodiments, a cross beam is provided on the support base and the test head assembly is provided on the cross beam.
In the specific embodiment of the test head assembly of the present invention, the test head assembly in this embodiment has the same structure as the test head assembly described in any one of the above specific embodiments 1 to 10 of the hydraulic support test stand, and will not be described in detail.
Claims (11)
1. Test head subassembly, its characterized in that: including being used for articulating the pneumatic cylinder on the hydraulic support test bench, the one end that the pneumatic cylinder kept away from pneumatic cylinder and hydraulic support test bench hinge position is equipped with the loading head, the loading head has the loading portion that is used for pushing up tail boom or shield roof beam in order to carry out the loading, the test head subassembly is still including adjusting the swing angle of pneumatic cylinder so that the loading head just to tail boom or shield roof beam loaded angle adjusting structure, angle adjusting structure includes the regulation pole, the one end and the pneumatic cylinder of regulation pole are articulated, the adjustable assembly of other end mounted position is on the hydraulic support test bench, the regulation pole is the jack, angle adjusting structure is still including with adjusting the articulated seat of pole, the regulation pole is through the adjustable assembly of articulated seat mounted position on the hydraulic support test bench.
2. The test head assembly of claim 1, wherein: the loading head is of a long plate structure, the number of the hydraulic cylinders is at least two, and the hydraulic cylinders are uniformly distributed along the length direction of the loading head.
3. The test head assembly of claim 2, wherein: the side surface of one side, which is away from the hinged position of the hydraulic cylinder and the loading head, of the loading head is defined as a loading surface, a loading block is convexly arranged on the loading surface, and the loading block forms the loading part.
4. A test head assembly as claimed in claim 3, wherein: the loading block is assembled on the loading surface along the length direction of the long plate in an adjustable mounting position.
5. The test head assembly of claim 4, wherein: the loading surface is provided with a plurality of groups of loading block fixing holes for forming loading block mounting positions along the length direction of the loading head, and the loading blocks are assembled on the loading surface through the adjustable mounting positions of the loading block fixing holes.
6. The hydraulic support test bed comprises a supporting seat, wherein a test head assembly is arranged on the supporting seat, and the hydraulic support test bed is characterized in that: the test head assembly comprises a hydraulic cylinder hinged to a hydraulic support test bed, a loading head is arranged at one end, away from the hinged position of the hydraulic cylinder and the hydraulic support test bed, of the hydraulic cylinder, the loading head is provided with a loading part for pushing a tail beam or a shield beam to load, the test head assembly further comprises an angle adjusting structure for adjusting the swing angle of the hydraulic cylinder to enable the loading head to be opposite to the tail beam or the shield beam to load, the angle adjusting structure comprises an adjusting rod, a plurality of adjusting rod mounting positions are arranged on the supporting seat, one end of the adjusting rod is hinged to the hydraulic cylinder, the other end of the adjusting rod is assembled on the adjusting rod mounting positions in an adjustable mode, the adjusting rod is a jack, the angle adjusting structure further comprises a hinged seat hinged to the adjusting rod, and the adjusting rod is assembled on the adjusting rod mounting positions in an adjustable mode through the hinged seat mounting positions.
7. The hydraulic mount bench of claim 6 wherein: the loading head is of a long plate structure, the number of the hydraulic cylinders is at least two, and the hydraulic cylinders are uniformly distributed along the length direction of the loading head.
8. The hydraulic mount bench of claim 7 wherein: the side surface of one side, which is away from the hinged position of the hydraulic cylinder and the loading head, of the loading head is defined as a loading surface, a loading block is convexly arranged on the loading surface, and the loading block forms the loading part.
9. The hydraulic mount bench of claim 8 wherein: the loading block is assembled on the loading surface along the length direction of the long plate in an adjustable mounting position.
10. The hydraulic mount bench of claim 9 wherein: the loading surface is provided with a plurality of groups of loading block fixing holes for forming loading block mounting positions along the length direction of the loading head, and the loading blocks are assembled on the loading surface through the adjustable mounting positions of the loading block fixing holes.
11. The hydraulic mount bench of claim 6 wherein: the supporting seat is provided with a top beam loading box, and the test head assembly is arranged on the top beam loading box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810739644.0A CN108731933B (en) | 2018-07-06 | 2018-07-06 | Test head assembly for loading tail beams or shield beams and hydraulic support test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810739644.0A CN108731933B (en) | 2018-07-06 | 2018-07-06 | Test head assembly for loading tail beams or shield beams and hydraulic support test bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108731933A CN108731933A (en) | 2018-11-02 |
| CN108731933B true CN108731933B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810739644.0A Active CN108731933B (en) | 2018-07-06 | 2018-07-06 | Test head assembly for loading tail beams or shield beams and hydraulic support test bed |
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| CN (1) | CN108731933B (en) |
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2018
- 2018-07-06 CN CN201810739644.0A patent/CN108731933B/en active Active
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| CN108731933A (en) | 2018-11-02 |
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