CN209927584U - Two-stage lever type mechanical experiment device - Google Patents
Two-stage lever type mechanical experiment device Download PDFInfo
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- CN209927584U CN209927584U CN201920288543.6U CN201920288543U CN209927584U CN 209927584 U CN209927584 U CN 209927584U CN 201920288543 U CN201920288543 U CN 201920288543U CN 209927584 U CN209927584 U CN 209927584U
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- 238000002474 experimental method Methods 0.000 title claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- 238000005192 partition Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a second grade lever mechanics experimental apparatus, include: a load-carrying section, a secondary lever, a ram, and a frame section; the two trays are respectively arranged on the left side and the right side of the frame through steel wire ropes; the first-stage lever and the second-stage lever are matched with the fixing column and fixed at the top of the frame, and the first-stage lever and the second-stage lever are connected through a pin hole; the tail part of the secondary lever is connected with a pressure head through a ball head, and the pressure head is provided with three level conversion pressure plates; the frame is fixed on the bottom plate through the outer rib plate; the middle plate is fixed on the frame through the inner ribbed plate, the middle partition plate is fixed on the middle plate, and the middle partition plate and the middle plate are detachable; the utility model aims at providing a second grade lever mechanics experimental apparatus aims at the cooperation installation through load part, second grade lever, pressure head and frame part, compresses and long term creep experiment to the model test piece, has overcome traditional mechanics experimental apparatus not only heavy but also be full of uncertain shortcoming, has prominently embodied advantages such as stable, convenient, high-efficient.
Description
Technical Field
The utility model relates to a device, concretely relates to second grade lever mechanics experimental apparatus.
Background
In recent years, with the economic stimulation measures and long-term strategic planning of the national rotation, more and more rock engineering projects such as traffic, water conservancy, hydropower and the like are developed continuously, and highway railway tunnels, diversion tunnels, underground gas storage reservoirs, oil storage reservoirs, national defense caverns, deep well tunnels and the like of various places are emerging continuously, so that the sufficient understanding of the mechanical properties of rock samples is required. The traditional mechanical experiment device for rock soil is large in size and heavy, a hydraulic or pneumatic system is adopted, a large-scale model experiment of the hydraulic system is adopted, a plurality of actuators are provided, a loading area is large, the defects of asynchronous loading and pressure fluctuation exist, and the constant stress boundary condition of a long-term creep experiment can not be strictly met. And the large model depends on a large number of matched loading and measuring systems, is limited by scheduling of equipment, materials, personnel, time, space and the like, and is not suitable for carrying out a large number of basic long-time tests. Therefore, it is very important to develop a mechanical experiment device which has a simple, stable and convenient structure and does not depend on an external matching mechanism.
Disclosure of Invention
The utility model aims at providing a simple structure, stable, convenient, do not rely on external supporting mechanical experiment device of mechanism, can carry out single model long term creep experiment, also can carry out bimodulus type creep experiment, can also compress simultaneously and creep test, and the experiment associativity is high.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a two-stage lever type mechanics experimental apparatus, includes: a load-carrying section, a secondary lever, a ram, and a frame section; the load-carrying part comprises a tray and a rope-threading fixing sleeve; the secondary lever comprises a primary lever and a secondary lever; the pressure head comprises a conversion sleeve, a fine adjustment pin, a primary conversion pressure plate, a secondary conversion pressure plate and a tertiary conversion pressure plate; the frame part comprises a bottom plate, an outer ribbed plate, a frame, a fixing column, a middle partition plate, a middle plate, an inner ribbed plate and an acrylic plate.
Furthermore, the steel wire rope passes through the rope threading fixing sleeve, and two ends of the steel wire rope are respectively connected with the first-level lever and the tray.
Furthermore, the first-level lever and the second-level lever are respectively matched with a fixing column on the frame, the first-level lever and the second-level lever are connected through a pin hole, and a copper sleeve is placed between the pin holes to prevent serious abrasion.
Furthermore, the secondary lever is connected with the conversion sleeve by a ball head; the replacement sleeve is provided with 3 pin holes which are matched with the fine adjustment pins, so that the height of the pressure head can be conveniently adjusted; the first-level conversion pressing plate, the second-level conversion pressing plate and the third-level conversion pressing plate are matched through pin holes, and the three-level conversion pressing plates enable the pressure acting on the experimental model to be more uniform.
Further, the fixing column is fixed on the upper part of the frame; the front of the frame is a visible area, and the acrylic plate is matched with a screw hole on the visible area of the frame through a screw; the frame is fixed on the bottom plate through the outer rib plate, and the bottom plate is provided with screw holes and can be fixed on other bottom frames through nuts; the middle plate is fixed on the frame through the inner ribbed slab, the middle partition plate is fixed on the middle plate, and the middle partition plate and the middle plate are detachable.
Furthermore, the pressure sensor is used for detecting the pressure provided by the pressure head.
Implement the utility model discloses a second grade lever mechanics experimental apparatus, its beneficial effect lies in:
(1) the two-stage lever type mechanical experiment device is simple in structure, flexible in configuration and simple and convenient to operate.
(2) The compression experiment and the creep experiment can be switched, the model experiment can be also used, the size of the model can be adjusted, and two small model experiments can be simultaneously carried out, or one model and one test piece are not interfered with each other.
(3) The mechanical experiment device overcomes the defects that the traditional mechanical experiment device aiming at rock soil is asynchronous in loading, pressure fluctuates, depends on a large number of matching mechanisms and the like, and has obvious advantages.
Drawings
FIG. 1: a three-dimensional perspective view of a two-stage lever type single model mechanical experiment device;
FIG. 2: a main view of a two-stage lever type single model mechanical experiment device;
FIG. 3: a two-stage lever type mechanical experiment device frame three-dimensional stereogram;
FIG. 4: a two-stage lever type double model mechanics experimental device three-dimensional stereogram;
FIG. 5: a front view of a pressure head of a two-stage lever type mechanical experiment device;
in the figure: the device comprises a base plate 1, an outer rib plate 2, a frame 3, a tray 4, a rope threading fixing sleeve 5, an experimental model 6, a primary lever 7, a secondary lever 8, a pressure head 9, an acrylic plate 10, a fixing column 11, a middle partition plate 12, a middle plate 13, an inner rib plate 14, a conversion sleeve 15, a fine adjustment pin 16, a primary conversion pressure plate 17, a secondary conversion pressure plate 18 and a tertiary conversion pressure plate 19.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 5, a two-stage leverage-type mechanical experiment device includes: a load-carrying section, a secondary lever, a ram, and a frame section; the load-carrying part comprises a tray 4 and a rope-threading fixing sleeve 5; the secondary lever comprises a primary lever 7 and a secondary lever 8; the pressure head comprises a conversion sleeve 15, a fine adjustment pin 16, a primary conversion pressure plate 17, a secondary conversion pressure plate 18 and a tertiary conversion pressure plate 19; the frame part comprises a bottom plate 1, an outer rib plate 2, a frame 3, a fixing column 11, a middle partition plate 12, a middle plate 13, an inner rib plate 14 and an acrylic plate 10; the steel wire rope passes through the rope threading fixing sleeve, and two ends of the steel wire rope are respectively connected with the primary lever 7 and the tray 4; the primary lever 7 and the secondary lever 8 are respectively matched with a fixing column 11 on the frame 3, the primary lever 7 and the secondary lever 8 are connected through a pin hole, and a copper sleeve is arranged between the pin holes to prevent serious abrasion; the secondary lever 8 is connected with the conversion sleeve 15 through a ball head; the installing and replacing sleeve 15 is provided with 3 pin holes which are matched with the fine adjustment pin 16, so that the height of the pressure head can be conveniently adjusted; the primary conversion pressure plate 17, the secondary conversion pressure plate 18 and the tertiary conversion pressure plate 19 are matched through pin holes, and the three-level conversion pressure plates enable the pressure acting on the experimental model 6 to be more uniform; the fixed column 11 is fixed on the upper part of the frame 3; the front of the frame 3 is a visible area, and the acrylic plate 10 is matched with a screw hole on the visible area of the frame 3 through a screw; the frame 3 is fixed on the bottom plate 1 through the outer rib plate 2, and the bottom plate 1 is provided with screw holes and can be fixed on other underframe through nuts; the middle plate 13 is fixed on the framework 3 through the inner ribbed plate 14, the middle partition plate 12 is fixed on the middle plate 13, and the middle partition plate 12 and the middle plate 13 are detachable; a pressure sensor is also included to detect the amount of pressure provided on the ram 9.
As shown in fig. 1 to 5, the working method of the second-level lever-type mechanics experiment device of the present invention comprises the following steps: firstly, the load-carrying part, the secondary lever, the pressure head and the frame part are assembled and installed according to requirements, and then a pre-experiment detection stage is carried out to check the installation quality of the experimental device. After the detection is finished, the experiment can be formally carried out. The test type is determined, and the selected test types include compression and creep tests, single model creep tests and double model creep tests, and test piece tests while the model is tested. Taking a single model creep experiment as an example: firstly, a model is manufactured, the model is piled up in layers in an experimental model, and meanwhile, the acrylic plate is arranged on the frame. The magnification of the secondary lever is calculated, and the weight of the weight to be placed in the tray is converted according to the target loading pressure. The pressure head is adjusted to a proper position, a heavy object is placed, and the target pressure at the pressure head is adjusted in time according to the pressure sensor. And after the adjustment is finished, entering a long-time creep experiment formally. After the experiment is finished, taking out the tray weight, unloading the acrylic plate, taking out the model and finishing the experiment; for other experiments, the procedure was as above.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a two-stage lever type mechanics experimental device which is characterized in that includes: a load-carrying section, a secondary lever, a ram, and a frame section; the load-carrying part comprises a tray (4) and a rope-threading fixing sleeve (5); the secondary lever comprises a primary lever (7) and a secondary lever (8); the pressure head comprises a conversion sleeve (15), a fine adjustment pin (16), a primary conversion pressure plate (17), a secondary conversion pressure plate (18) and a tertiary conversion pressure plate (19); the frame part comprises a bottom plate (1), an outer rib plate (2), a frame (3), fixing columns (11), a middle partition plate (12), a middle plate (13), an inner rib plate (14) and an acrylic plate (10).
2. A two-stage lever type mechanical experiment device as claimed in claim 1, wherein the steel wire rope passes through the rope-threading fixing sleeve, and two ends of the steel wire rope are respectively connected with the primary lever (7) and the tray (4).
3. A two-stage lever type mechanical experiment device as claimed in claim 1, wherein the primary lever (7) and the secondary lever (8) are respectively matched with a fixing column (11) on the frame (3), the primary lever (7) and the secondary lever (8) are connected through a pin hole, and a copper sleeve is placed between the pin holes to prevent serious abrasion.
4. A two-stage lever type mechanical experiment device as claimed in claim 1, wherein the two-stage lever (8) is connected with the conversion sleeve (15) by a ball head; the conversion sleeve (15) is provided with 3 pin holes which are matched with the fine adjustment pin (16) so as to be convenient for adjusting the height of the pressure head; the first-level conversion pressing plate (17), the second-level conversion pressing plate (18) and the third-level conversion pressing plate (19) are matched through pin holes, and the three-level conversion pressing plates enable the pressure acting on the experimental model (6) to be more uniform.
5. A two-stage leverage mechanical testing device as claimed in claim 1 wherein the fixed post (11) is fixed on the upper part of the frame (3); the front of the frame (3) is a visible area, and the acrylic plate (10) is matched with a screw hole on the visible area of the frame (3) through a screw; the frame (3) is fixed on the bottom plate (1) through the outer rib plate (2), and the bottom plate (1) is provided with a screw hole and can be fixed on the underframe through a nut; the middle plate (13) is fixed on the framework (3) through the inner ribbed plate (14), the middle partition plate (12) is fixed on the middle plate (13), and the middle partition plate (12) and the middle plate (13) are detachable.
6. A two-stage leverage mechanical testing device as claimed in claim 1 further comprising a pressure sensor for sensing the amount of pressure provided on the ram (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920288543.6U CN209927584U (en) | 2019-03-07 | 2019-03-07 | Two-stage lever type mechanical experiment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920288543.6U CN209927584U (en) | 2019-03-07 | 2019-03-07 | Two-stage lever type mechanical experiment device |
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| Publication Number | Publication Date |
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| CN209927584U true CN209927584U (en) | 2020-01-10 |
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| CN201920288543.6U Expired - Fee Related CN209927584U (en) | 2019-03-07 | 2019-03-07 | Two-stage lever type mechanical experiment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682674A (en) * | 2019-03-07 | 2019-04-26 | 青岛科技大学 | A kind of second lever formula dynamics experimental device |
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2019
- 2019-03-07 CN CN201920288543.6U patent/CN209927584U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682674A (en) * | 2019-03-07 | 2019-04-26 | 青岛科技大学 | A kind of second lever formula dynamics experimental device |
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