CN112643871B - Tunnel lining model test demoulding device and method - Google Patents
Tunnel lining model test demoulding device and method Download PDFInfo
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- CN112643871B CN112643871B CN202110085161.5A CN202110085161A CN112643871B CN 112643871 B CN112643871 B CN 112643871B CN 202110085161 A CN202110085161 A CN 202110085161A CN 112643871 B CN112643871 B CN 112643871B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
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Abstract
The invention is suitable for the technical field of civil engineering and provides a tunnel lining model test demoulding device and a tunnel lining model test demoulding method. The test demolding device comprises: a base; the bracket is arranged on the base; a main body disposed on the bracket; the mould fixing piece is arranged on the main body; the die fixing piece is provided with a sucker for sucking the die; the demoulding telescopic piece is arranged on the main body; the demolding telescopic piece is provided with a demolding piece which is used for being in contact with a lining model in the mold, and the demolding piece exerts acting force on the lining model in the mold under the telescopic action of the first telescopic rod so as to enable the lining model to be separated from the mold. Compared with the prior art, the demolding device has the advantages that demolding is carried out in a mode that the demolding expansion piece extends to drive the demolding piece to apply acting force to the lining model downwards, manual operations such as knocking and pulling are not needed, time and labor are saved, demolding operation can be easily and conveniently completed, and demolding failure hardly occurs.
Description
Technical Field
The invention belongs to the technical field of civil engineering, and particularly relates to a tunnel lining model test demoulding device and method.
Background
The model test is one of important research means of tunnel and urban underground space engineering, and researchers and engineers adopt the model test to solve a series of tunnel engineering problems. With the development of tunnel engineering towards 'long', 'big' and 'deep', tunnel model tests are also more and more complex, and one of the manifestations is the increase of the length of a tunnel lining model.
At present, a tunnel lining mold is mostly made of a galvanized iron sheet, the existing tunnel lining mold is not easy to demold, and demolding is more difficult along with the increase of the length of a lining model. The traditional demoulding method mostly adopts the means of brushing a demoulding agent on a mould, wrapping a preservative film and the like to reduce the friction force between the mould and the mould, and adopts the means of knocking by a rubber hammer, manually pulling the mould and the like during demoulding.
The applicant of the present invention finds that, in implementing the above technical solution, the above technical solution has at least the following disadvantages:
the traditional manual demoulding method is time-consuming and labor-consuming, cannot achieve the due effect, and even has the condition of demoulding failure.
Disclosure of Invention
The embodiment of the invention aims to provide a tunnel lining model test demoulding device, aiming at solving the problems in the background technology.
The embodiment of the invention is realized in such a way that the tunnel lining model test demoulding device comprises:
a base;
the bracket is arranged on the base;
a main body disposed on the bracket;
the mould fixing piece is arranged on the main body; the die fixing piece is provided with a sucker for sucking the die;
the demoulding telescopic piece is arranged on the main body; the demolding telescopic piece is provided with a demolding piece which is used for being in contact with a lining model in the mold, and the demolding piece exerts acting force on the lining model in the mold under the telescopic action of the first telescopic rod so as to enable the lining model to be separated from the mold.
Preferably, the base is provided with an impact buffer layer.
Preferably, the demolding part is composed of a plurality of contact plates which are detachably connected, and the shape of the demolding part can be adjusted by changing the position relation among the plurality of contact plates.
Preferably, the mold comprises a lining outer mold and a lining inner mold; the die fixing piece comprises an outer die fixing piece and an inner film fixing piece; and the outer die fixing piece and the inner film fixing piece are both provided with suckers.
Preferably, the bracket, the outer die fixing piece and the inner die fixing piece are all telescopic pieces.
Preferably, the tunnel lining model test demoulding device further comprises:
a control system;
the starting switch is used for starting the control system;
a stop switch for stopping the control system;
the bracket lifting button is used for controlling the lifting of the bracket;
the outer mold fixing piece lifting button is used for controlling the outer mold fixing piece to lift;
and the inner die fixing piece lifting button is used for controlling the lifting of the inner die fixing piece.
Preferably, the demolding telescopic piece is a hydraulic telescopic piece; experimental shedder of tunnel lining model still includes:
the hydraulic control system is connected with the control system;
a hydraulic oil pipe; the hydraulic oil pipe comprises an oil inlet pipeline and an oil return pipeline;
a hydraulic oil pump; the hydraulic telescopic part is communicated with a hydraulic oil pump through a hydraulic oil pipe;
the oil inlet valve is arranged on the oil inlet pipeline;
and the oil return valve is arranged on the oil return pipeline.
Preferably, the tunnel lining model test demoulding device further comprises:
the display system is connected with the control system;
the display screen is used for displaying demoulding pressure and demoulding displacement;
and the display screen control button is used for zeroing and correcting the demolding pressure and the demolding displacement displayed by the display screen.
Preferably, the suction cup is a vacuum suction cup or a magnetic suction cup.
Another object of an embodiment of the present invention is to provide a method for testing and demolding a tunnel lining model, where the method for testing and demolding a tunnel lining model includes the following steps:
mounting the mold to be demolded on a suction cup of a mold fixing piece;
the demoulding expansion piece drives the demoulding piece to contact with a lining model in the mould;
and the demoulding part exerts acting force on the lining model in the mould under the telescopic action of the demoulding telescopic part so as to separate the lining model from the mould.
The tunnel lining model test demoulding device provided by the embodiment of the invention comprises: a base; the bracket is arranged on the base; a main body disposed on the bracket; the mould fixing piece is arranged on the main body; the die fixing piece is provided with a sucker for sucking the die; the demoulding telescopic piece is arranged on the main body; the demolding telescopic piece is provided with a demolding piece which is used for being in contact with a lining model in the mold, and the demolding piece exerts acting force on the lining model in the mold under the telescopic action of the first telescopic rod so as to enable the lining model to be separated from the mold.
Compared with the prior art, the demolding device has the advantages that demolding is carried out in a mode that the demolding expansion piece extends to drive the demolding piece to apply acting force to the lining model downwards, manual operations such as knocking and pulling are not needed, time and labor are saved, demolding operation can be easily and conveniently completed, and demolding failure hardly occurs.
Drawings
Fig. 1 is a schematic perspective view of a tunnel lining model test demolding device provided in an embodiment of the present invention;
FIG. 2 is a front view of a tunnel lining model test stripping device provided by an embodiment of the invention;
FIG. 3 is a schematic view of a tunnel lining model test demolding device provided by an embodiment of the invention during demolding;
FIG. 4 is a schematic structural diagram of a stripping module provided in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a mold according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a system portion provided by an embodiment of the invention.
In the drawings: 1. starting a switch; 2. a stop switch; 3. an oil inlet valve; 4. an oil return valve; 5. a support lifting button; 6. an outer mold fixing piece lifting button; 7. an inner mold fixing piece lifting button; 8. a display screen; 9. a display screen control button; 10. a support; 11. an outer mold fixing member; 12. an inner mold fixing member; 13. demolding the telescopic piece; 14. demoulding parts; 15. a suction cup; 16. a hydraulic oil pipe; 17. a hydraulic oil pump; 18. a base; 19. lining the outer mold; 20. lining the internal mold; 21. a control system; 22. a display system; 23. a hydraulic system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
Example 1
As shown in fig. 1 to 3, a tunnel lining model test demoulding device provided in an embodiment of the present invention includes:
a base 18;
the bracket 10 is arranged on the base 18;
a main body provided on the stand 10;
the mould fixing piece is arranged on the main body; the mould fixing piece is provided with a sucker 15 for absorbing the mould;
a demolding expansion piece 13 arranged on the main body; the demoulding telescopic piece 13 is provided with a demoulding piece 14 which is used for contacting with a lining model in the mould, and the demoulding piece 14 exerts acting force on the lining model in the mould under the telescopic action of the first telescopic rod so as to separate the lining model from the mould.
The working principle of the embodiment of the invention is as follows:
the lining pattern to be demolded is mounted on a suction cup 15 of a mold fixing part, a demolding expansion piece 13 extends to enable a demolding piece 14 to be in contact with the lining pattern in the mold, the demolding expansion piece 13 extends again, acting force is applied to the lining pattern in the mold through the demolding piece 14, and the lining pattern is separated from the mold and falls on a base 18. After the lining model is completely separated from the mould, the demoulding expansion piece 13 is contracted and returned to prepare for next demoulding.
Compared with the prior art, the demoulding part 14 is driven to downwards demould in a mode of applying acting force to the lining model by the stretching of the demoulding telescopic part 13, the manual operations of knocking, pulling and the like are not needed, time and labor are saved, the demoulding operation can be easily and conveniently completed, and the demoulding failure condition is hardly caused.
In a preferred embodiment of the present invention, the base 18 is provided with an impact buffer.
Specifically, when the stripping member 14 applies a force to the lining form in the mold to strip the lining form from the mold, the lining form may fall directly onto the footing 18 to collide with the footing 18 and be damaged. In order to avoid the situation, in the embodiment, the base 18 is provided with the impact buffer layer, and when the lining model falls on the impact buffer layer, the impact buffer layer can play a certain role in buffering, so that the impact potential energy received by the lining model is reduced.
The thickness of the impact buffer layer can be determined according to the actual situation, and in the embodiment, the impact buffer layer is set to be 1cm thick.
As shown in fig. 4, as a preferred embodiment of the present invention, the demolding member 14 is composed of a plurality of pieces of the contact plates which are detachably connected, and the shape of the demolding member 14 can be adjusted by changing the positional relationship between the plurality of pieces of the contact plates.
Specifically, since different lining forms have different cross-sectional shapes, generally, each time a lining form is demolded, a corresponding demolded part 14 is selected to achieve an optimal demolded process. In order to reduce the work, the present embodiment improves the composition structure of the demoulding part 14, the improved demoulding part 14 is composed of a plurality of contact plates which are detachably connected, and when demoulding is carried out, the shape of the demoulding part 14 can be adjusted only by changing the position relation among the plurality of contact plates, so that the demoulding part 14 is suitable for demoulding operation of lining models with various section shapes.
As shown in fig. 5, as a preferred embodiment of the present invention, the mold includes a lining outer mold 19 and a lining inner mold 20; the die fixing piece comprises an outer die fixing piece 11 and an inner die fixing piece; and the outer die fixing piece 11 and the inner film fixing piece are both provided with suckers 15.
Specifically, the lining outer mold 19 and the lining inner mold 20 in this embodiment may be made of sheet iron. When the demolding operation is performed, the lining outer mold 19 is fixed to the outer mold fixing member 11 by the suction cup 15, and the lining inner mold 20 is fixed to the inner mold fixing member by the suction cup 15.
In a preferred embodiment of the present invention, the bracket 10, the outer mold fixture 11 and the inner mold fixture are all telescopic members.
Specifically, in order to facilitate the demolding operation, the bracket 10, the outer mold fixing member 11 and the inner mold fixing member in this embodiment are made of telescopic members. During demoulding, the height of the tunnel lining model test demoulding device can be adjusted through the lifting of the support 10, and the fixed height of the mould can be adjusted through the lifting of the outer mould fixing piece 11 and the inner membrane fixing piece. The height adjustment can be adapted to the demoulding operation of lining models in different conditions.
As shown in fig. 2 and 6, as a preferred embodiment of the present invention, the tunnel lining model test stripping device further includes:
a control system 21;
a start switch 1 for starting the control system 21;
a stop switch 2 for stopping the control system 21;
a support lifting button 5 for controlling the lifting of the support 10;
the outer mold fixing piece lifting button 6 is used for controlling the lifting of the outer mold fixing piece 11;
and the inner die fixing piece lifting button 7 is used for controlling the lifting of the inner die fixing piece 12.
Specifically, a control system 21, a start switch 1, a stop switch 2, a bracket lifting button 5, an outer mold fixture lifting button 6 and an inner mold fixture lifting button 7 are all arranged on the main body.
The tunnel lining model test demoulding device can only determine the acting force applied to the lining model through manual experience during demoulding. In this embodiment, by adding the control system 21, the demolding pressure can be set in the control system 21 according to the strength of the lining mold during demolding, and after the setting is completed, the demolding extension member 13 extends downward, and the acting force is transmitted to the lining mold through the demolding member 14, so that the lining mold is separated from the mold and falls on the base 18 provided with the impact buffer layer.
The control system 21 can control the state of the entire apparatus in addition to the above-described functions. The start switch 1 and the stop switch 2 can control the start and stop of the control system 21, that is, the operation and stop of the whole device can be controlled.
The stand elevation button 5 can control elevation of the stand 10. The bracket lifting button 5 can send out a corresponding electric signal after being triggered, and the control system 21 controls the bracket 10 to lift after receiving the electric signal.
The outer mold fixing member lifting button 6 can control the lifting of the outer mold fixing member 11. The outer mold fixing part lifting button 6 can send out a corresponding electric signal after being triggered, and the control system 21 controls the outer mold fixing part 11 to lift after receiving the electric signal.
The inner die fixing member lifting button 7 can control the lifting of the inner die fixing member 12. The internal mold fixing piece lifting button 7 can send out a corresponding electric signal after being triggered, and the control system 21 controls the internal mold fixing piece 12 to lift after receiving the electric signal.
As shown in fig. 2 and 6, as a preferred embodiment of the present invention, the stripper extension 13 is a hydraulic extension; experimental shedder of tunnel lining model still includes:
a hydraulic control system 21 connected to the control system 21;
a hydraulic oil pipe 16; the hydraulic oil pipe 16 comprises an oil inlet pipeline and an oil return pipeline;
a hydraulic oil pump 17; the hydraulic telescopic part is communicated with a hydraulic oil pump 17 through a hydraulic oil pipe 16;
the oil inlet valve 3 is arranged on the oil inlet pipeline;
and the oil return valve 4 is arranged on the oil return pipeline.
Specifically, the hydraulic control system 21, the inlet valve 3, and the return valve 4 are provided on the main body.
The hydraulic control system 21 is used to control the extension and retraction of the stripper extension 13. When the demoulding expansion piece 13 needs to be extended, the oil inlet valve 3 is opened, the oil return valve 4 is closed, and the hydraulic control system 21 can control hydraulic oil in the hydraulic oil pump 17 to enter the demoulding expansion piece 13 through the hydraulic oil pipe 16, so that the demoulding expansion piece 13 is extended. When the demolding expansion piece 13 needs to be contracted, the oil inlet valve 3 is closed, the oil return valve 4 is opened, and the hydraulic control system 21 can control the hydraulic oil pump 17 to re-pump the hydraulic oil in the demolding expansion piece 13 back into the hydraulic oil pump 17 through the hydraulic oil pipe 16, so that the demolding expansion piece 13 is contracted.
As shown in fig. 2 and 6, as a preferred embodiment of the present invention, the tunnel lining model test stripping device further includes:
a display system 22 connected to the control system 21;
the display screen 8 is used for displaying demoulding pressure and demoulding displacement;
and the display screen control button 9 is used for carrying out zero setting and correction on the demolding pressure and the demolding displacement displayed by the display screen 8.
Specifically, the acting force (demolding pressure) applied downwards by the demolding expansion piece 13 and the displacement (demolding displacement) of the lining model under the action of the demolding piece 14 can be displayed through the display screen 8, and the demolding pressure and the demolding displacement displayed through the display screen 8 can be used for carrying out related calculation to obtain required data. Before demolding, whether demolding pressure and demolding displacement on the display screen 8 are zero or not needs to be checked, and if the demolding pressure and the demolding displacement are not zero, a display screen control button 9 needs to be provided for zero return adjustment. If the display of the demoulding pressure and the demoulding displacement on the display screen 8 has errors during demoulding, the adjustment and the correction can be carried out through the display screen control button 9.
As a preferred embodiment of the present invention, the suction cup 15 is a vacuum suction cup or a magnetic suction cup.
Example 2
Another object of an embodiment of the present invention is to provide a method for testing and demolding a tunnel lining model, where the method for testing and demolding a tunnel lining model includes the following steps:
gypsum, water and calcium carbonate are uniformly stirred according to a certain mixing proportion and poured into a cavity formed by the lining external mold 19 and the lining internal mold 20;
installing a die to be demoulded on the vacuum chucks 15 of the outer die fixing column and the inner die fixing column;
opening a hydraulic oil pump 17 to adjust the stripping expansion piece 13 and the stripping piece 14 so that the lining model and the stripping piece 14 are contacted, setting stripping pressure in a control system 21 according to the strength of the lining model, extending the stripping expansion piece 13 downwards, and transmitting acting force to the lining model through the stripping piece 14, so that the lining model is separated from the mould and falls on a base 18 provided with an impact buffer layer.
Compared with the prior art, this embodiment takes place to extend through drawing of patterns extensible member 13 and drives and takes off 14 mode of exerting the effort to lining model downwards and carry out the drawing of patterns, need not the manual work and strikes, draw operations such as get, labour saving and time saving, the completion drawing of patterns operation that can relax convenient, the condition of drawing of patterns failure can hardly appear moreover.
In addition, the invention has simple structure, low difficulty of test operation, wide application range of the demoulding component 14 in the device, and can demould models with different section shapes, and the display screen 8 can display demoulding pressure and demoulding displacement in real time in the demoulding process.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a tunnel lining model test shedder, its characterized in that, tunnel lining model test shedder includes:
a base;
the bracket is arranged on the base;
a main body disposed on the bracket;
the mould fixing piece is arranged on the main body; the die fixing piece is provided with a sucker for sucking the die;
the demoulding telescopic piece is arranged on the main body; the demolding telescopic piece is provided with a demolding piece which is used for being in contact with a lining model in the mold, and the demolding piece exerts acting force on the lining model in the mold under the telescopic action of the first telescopic rod so as to separate the lining model from the mold;
the demolding part consists of a plurality of contact plates which are detachably connected, and the shape of the demolding part can be adjusted by changing the position relation among the contact plates;
the mold comprises a lining external mold and a lining internal mold; the die fixing piece comprises an outer die fixing piece and an inner die fixing piece; the outer mold fixing piece and the inner mold fixing piece are both provided with suckers;
the support, the outer die fixing piece and the inner die fixing piece are all telescopic pieces.
2. The tunnel lining model test stripping device according to claim 1, wherein an impact buffer layer is arranged on the base.
3. The tunnel lining model test stripping device according to claim 1, wherein the tunnel lining model test stripping device further comprises:
a control system;
the starting switch is used for starting the control system;
a stop switch for stopping the control system;
the bracket lifting button is used for controlling the lifting of the bracket;
the outer mold fixing piece lifting button is used for controlling the outer mold fixing piece to lift;
and the inner die fixing piece lifting button is used for controlling the lifting of the inner die fixing piece.
4. The tunnel lining model test demoulding device according to claim 3, wherein the demoulding expansion piece is a hydraulic expansion piece; experimental shedder of tunnel lining model still includes:
the hydraulic control system is connected with the control system;
a hydraulic oil pipe; the hydraulic oil pipe comprises an oil inlet pipeline and an oil return pipeline;
a hydraulic oil pump; the hydraulic telescopic part is communicated with a hydraulic oil pump through a hydraulic oil pipe;
the oil inlet valve is arranged on the oil inlet pipeline;
and the oil return valve is arranged on the oil return pipeline.
5. The tunnel lining model test stripping device according to claim 4, wherein the tunnel lining model test stripping device further comprises:
the display system is connected with the control system;
the display screen is used for displaying demoulding pressure and demoulding displacement;
and the display screen control button is used for zeroing and correcting the demolding pressure and the demolding displacement displayed by the display screen.
6. The tunnel lining model test demoulding device according to claim 1, wherein the suction cup is a vacuum suction cup or a magnetic suction cup.
7. A tunnel lining model test demoulding method is implemented by using the tunnel lining model test demoulding device as claimed in any one of claims 1 to 6, and comprises the following steps:
installing a die to be demoulded on a sucking disc of a die fixing piece;
the demoulding expansion piece drives the demoulding piece to contact with a lining model in the mould;
and the demoulding part exerts acting force on the lining model in the mould under the telescopic action of the demoulding telescopic part so as to separate the lining model from the mould.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110085161.5A CN112643871B (en) | 2021-01-22 | 2021-01-22 | Tunnel lining model test demoulding device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110085161.5A CN112643871B (en) | 2021-01-22 | 2021-01-22 | Tunnel lining model test demoulding device and method |
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| CN112643871B true CN112643871B (en) | 2021-10-19 |
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| CN207983642U (en) * | 2018-01-12 | 2018-10-19 | 成都职业技术学院 | A kind of two-way compacting tool set of easily demoulding tubular blank |
| CN110774410A (en) * | 2019-11-29 | 2020-02-11 | 西南交通大学 | Tunnel lining model pouring device and tunnel lining model pouring method |
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2021
- 2021-01-22 CN CN202110085161.5A patent/CN112643871B/en active Active
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| KR20100063587A (en) * | 2008-12-03 | 2010-06-11 | 민경애 | The production apparatus and method of clay container |
| CN201471585U (en) * | 2009-06-05 | 2010-05-19 | 贵阳小河区智起发泡轻质石膏砌块研发中心 | Rapid gypsum block ejection demolding production machine |
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