CN215525398U - Shield cutter wear simulation device - Google Patents
Shield cutter wear simulation device Download PDFInfo
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- CN215525398U CN215525398U CN202120667597.0U CN202120667597U CN215525398U CN 215525398 U CN215525398 U CN 215525398U CN 202120667597 U CN202120667597 U CN 202120667597U CN 215525398 U CN215525398 U CN 215525398U
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Abstract
The utility model belongs to the technical field of shield construction, and particularly relates to a shield cutter abrasion simulation device. The shield cutter abrasion simulation device comprises a force transfer beam, a support frame, a rotating mechanism, a plurality of shield cutter blocks, a test box and an air bag lifting mechanism, wherein one end of the rotating mechanism is connected with the force transfer beam, and the other end of the rotating mechanism is detachably connected with the plurality of shield cutter blocks; the proof box is used for bearing the soil sample that awaits measuring, the upper end opening of proof box, the shield cutter piece stretches into the soil sample that awaits measuring, rotary mechanism drives the shield cutter piece at the proof box internal rotation, gasbag elevating system includes multiunit gasbag pressurization subassembly and is used for providing gaseous air pump for gasbag pressurization subassembly, multiunit gasbag pressurization subassembly sets up in the bottom of proof box, thereby the air pump is responsible for providing gaseous drive proof box elevating movement for gasbag pressurization subassembly through the gas transmission. Therefore, the testing device is simple in structure and convenient to operate, and can truly simulate the abrasion condition of the shield cutter in the shield tunneling process when the shield cutter abrades the soil body.
Description
Technical Field
The utility model belongs to the technical field of shield construction, and particularly relates to a shield cutter abrasion simulation device.
Background
In shield construction, sandy soil and sandy gravel stratum are often encountered, and the shield is characterized in that cohesive force is almost zero, an internal friction angle is large, quartz content is high, strength is high, and high abrasiveness is achieved, so that severe abrasion of a cutter head and a cutter is easily caused, the cutter is frequently replaced in the construction process, and construction period is delayed and cost is increased.
At present, the focus of the abrasive tests at home and abroad is mainly on hard rock, the tests and test methods concerning the abrasive properties of sandy soil and sandy gravel are few, and there are two kinds of international conventional soil abrasive tests, namely an LCPC (laboratory environmental des Ponts et Chausses) test device in France and an SAT (soil Abrasion test) test developed by Norwegian university of science and technology on the basis of the NTNU Abrasion test. Both the LCPC test and the SAT test cannot apply pressure to the soil sample, and cannot accurately simulate the abrasion condition when a shield cutter abrades the soil body in the shield tunneling process.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to solve the problems in the prior art, the utility model provides a shield cutter abrasion simulation device which is simple in structure and convenient to operate and can truly simulate the abrasion condition of a shield cutter in the shield tunneling process when the shield cutter abrades a soil body.
(II) technical scheme
In order to achieve the purpose, the utility model adopts the main technical scheme that:
the utility model provides a shield cutter abrasion simulation device which comprises a force transfer beam, a support frame, a rotating mechanism, at least one shield cutter block, a test box and an air bag lifting mechanism, wherein the force transfer beam is arranged on the support frame; the force transfer beam is horizontally arranged on the support frame; one end of the rotating mechanism is connected with the force transfer beam, and the other end of the rotating mechanism is detachably connected with the plurality of shield cutter blocks; the test box is used for bearing a soil sample to be tested, the upper end of the test box is provided with an opening, the shield cutter block extends into the soil sample to be tested, and the rotating mechanism drives the shield cutter block to rotate in the test box; the air bag lifting mechanism comprises a plurality of groups of air bag pressurizing assemblies and an air pump for providing air for the air bag pressurizing assemblies; the air pump provides air for the air bag pressurizing assembly through the air transmission main pipe so as to drive the test box to move up and down; the air bag pressurizing assembly comprises an air bag, and an air release valve is arranged on the air bag.
Preferably, the air bag pressurizing assembly further comprises an air delivery branch pipe and a regulating valve; the gasbag sets up in the bottom of proof box, and the gasbag passes through gas transmission branch pipe and is responsible for the intercommunication with the gas transmission, and the governing valve setting is on gas transmission branch pipe.
Preferably, the rotating mechanism comprises a motor, a fixed frame, a rotating shaft and a circular turntable; the fixed frame is connected with the force transmission beam, the motor is arranged on the fixed frame, and an output shaft of the motor is connected with one end of the rotating shaft through the coupler; the other end of the rotating shaft is connected with the circular turntable, and the shield cutter block is detachably connected with the circular turntable; the motor drives the rotating shaft to rotate so as to drive the shield cutter block on the circular turntable to rotate.
Preferably, a plurality of rows of cutter block mounting holes are formed in the bottom surface of the circular turntable at equal intervals along the circumferential direction, a plurality of cutter block mounting holes in the same row are arranged in the direction away from the center of the circular turntable, and the shield cutter blocks are selectively mounted on the cutter block mounting holes.
Preferably, the circular turntable further comprises two reserved mounting holes, and the reserved mounting holes are symmetrically arranged on two sides of the center of the circular turntable.
Preferably, still include laser range finder, laser range finder sets up on biography power roof beam, and laser range finder sets up for the top surface of the soil sample that awaits measuring.
Preferably, the height of the soil sample to be tested in the test chamber is lower than 60% of the height of the test chamber.
Preferably, the support frame comprises a horizontal rod, a vertical rod and a base, the vertical rod is arranged oppositely, the bottom end of the vertical rod is connected with the base, and the top end of the vertical rod is used for supporting the horizontal rod; the air bag pressurizing assembly is arranged on the base; the fixed mount is connected with the horizontal rod.
Preferably, the device further comprises a limiting rod; the limiting rod is horizontally arranged on the vertical rod and used for limiting the test box in the vertical direction.
(III) advantageous effects
The utility model has the beneficial effects that:
according to the shield cutter abrasion simulation device provided by the utility model, the shield cutter block extends into a soil sample to be tested, the rotating mechanism drives the shield cutter block to rotate in the test box, the plurality of air bag pressurizing assemblies are uniformly arranged at the bottom of the test box, after the air bags are pressurized, the bottom of the test box is guaranteed to be uniformly pressurized, and when the air bag lifting mechanism ascends at a constant speed, the test box is driven to move linearly so as to realize the pressure of the soil sample to be tested in the test box on the shield cutter block in the vertical direction, so that the abrasion condition of the shield cutter in the shield tunneling process when the shield cutter abrades the soil body is truly simulated, and the shield cutter abrasion simulation device is simple in structure and convenient to operate.
Drawings
Fig. 1 is a schematic structural diagram of a shield cutter wear simulation device according to the embodiment;
FIG. 2 is a schematic structural diagram of the circular turntable in FIG. 1;
FIG. 3 is a schematic structural view of a shield cutter of FIG. 1;
fig. 4 is a schematic view of another shield cutter of fig. 1.
[ description of reference ]
11: a horizontal bar; 12: a vertical rod; 13: a base; 14: a transfer beam;
21: a fixed mount; 22: a rotating shaft; 23: a coupling; 24: a circular turntable; 241: a cutter block mounting hole; 242: reserving a mounting hole;
3: a test chamber;
4: a shield cutter block;
51: an air pump; 52: a gas transmission main pipe; 53: an air bag; 54: a gas delivery branch pipe; 55: adjusting a valve; 56: an air pressure detection sensor;
6: laser range finder.
Detailed Description
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
As shown in fig. 1 to 4, the present embodiment provides a shield cutter wear simulation device, which includes a transfer beam 14, a support frame, a rotation mechanism, at least one shield cutter block 4, a test box 3, and an air bag lifting mechanism. Wherein, biography power roof beam 14 level sets up on the support frame, rotary mechanism's one end is connected with biography power roof beam 14, rotary mechanism's the other end and a plurality of shield structure sword piece 4 can be dismantled and be connected, shield structure sword piece 4 sets up with proof box 3 relatively, in practical application's in-process, the sample box is cylindrical structure, proof box 3 sets up along same axis with rotary mechanism, proof box 3 is used for bearing the soil sample that awaits measuring, proof box 3's upper end opening, shield structure sword piece 4 stretches into the soil sample that awaits measuring, rotary mechanism drives shield structure sword piece 4 at proof box 3 internal rotation, to realize the soil sample that awaits measuring in the proof box 3 and to shield structure sword piece 4 abrasion characteristic test.
The air bag lifting mechanism comprises a plurality of groups of air bag pressurizing assemblies and an air pump 51 used for providing air for the air bag pressurizing assemblies, the air pump 51 is arranged at the bottom of the test box 3, the air pump 51 provides air for the air bag pressurizing assemblies through an air transmission main pipe 52 so as to drive the test box 3 to move up and down, and therefore the abrasion condition of the shield cutter in the vertical direction to the pressure of the shield cutter block 4 in the test box 3 is really simulated. It should be noted that the height of the soil sample to be tested in the test chamber 3 is less than 60% of the height of the test chamber 3 during the course of the test. In this embodiment, the inner diameter of the test chamber 3 is 300mm, the particle size of the soil sample to be tested is in the range of 5-50mm, and the test of the crushed rock particles with large particle size or the natural soil sample can be realized.
The embodiment provides a shield cutter wearing and tearing analogue means, shield cutter piece 4 stretches into the soil sample that awaits measuring, rotary mechanism drives shield cutter piece 4 at proof box 3 internal rotation, a plurality of gasbag pressurization subassemblies evenly set up in proof box 3's bottom, it is approximate to guarantee that 3 bottoms of proof box are evenly compressed after gasbag 53 pressure boost and drive 3 rectilinear motion of proof box after gasbag elevating system rises at the uniform velocity in order to realize in the proof box 3 that the soil sample that awaits measuring is to shield cutter piece 4 at the pressure of vertical direction thereby the wearing and tearing condition when the real simulation shield tunnelling in-process shield cutter abrades the soil body, and this shield cutter wearing and tearing analogue means simple structure, and easy and simple to handle.
As shown in FIG. 1, the bladder pressurization assembly includes a bladder 53, a gas delivery manifold 54, and a regulator valve 55. The air bag 53 is arranged at the bottom of the test box 3, the air bag 53 is communicated with the main gas transmission pipe 52 through a gas transmission branch pipe 54, and the adjusting valve 55 is arranged on the gas transmission branch pipe 54 and can adjust the air inflow in the air bag 53. The air bag 53 is also provided with an air release valve, when the air bag lifting mechanism needs to descend, the air release valve on the air bag 53 is opened, so that the test box 3 can descend conveniently, and of course, an air pressure detection sensor 56 can be arranged in the air bag 53 to monitor the pressure condition in the air bag. In the embodiment, the test box 3 is uniformly moved upwards by adopting the pressurizing form of the air bag 53, so that a complex oil circuit circulating system in the traditional hydraulic pressurizing process is avoided, and the abrasion condition of the shield cutter in the process of abrading soil is reduced. In order to make the movement of the test chamber 3 in the vertical direction more stable, a plurality of groups of air bag pressurizing assemblies may be provided, and in this embodiment, 3 groups of air bag pressurizing assemblies are provided, but of course, the number of the air bag pressurizing assemblies may also be 4 groups or 5 groups, and the number of the air bag pressurizing assemblies is not particularly limited herein.
Specifically, the rotating mechanism includes a motor, a fixed frame 21, a rotating shaft 22, and a circular turntable 24. Mount 21 passes through the bolt to be connected with biography power roof beam 14, the motor sets up on mount 21, the output shaft of motor passes through shaft coupling 23 and is connected with the one end of axis of rotation 22, the other end and the circular carousel 24 of axis of rotation 22 are connected, a plurality of shield cutter blocks 4 can be dismantled with circular carousel 24 and be connected, thereby motor drive axis of rotation 22 rotates and drives shield cutter block 4 on the circular carousel 24 and is bearing the proof box 3 rotations of the soil sample that awaits measuring, thereby the shield structure in-process has been simulated, the condition of shield cutter block 4 wearing and tearing in sandy soil and sandy cobble stratum.
As shown in fig. 2, a plurality of rows of cutter block mounting holes 241 are circumferentially and equidistantly arranged on the bottom surface of the circular turntable 24, a plurality of cutter block mounting holes 241 on the same row are arranged in a direction away from the center of the circular turntable 24, and the shield cutter block 4 is selectively mounted on any one of the cutter block mounting holes 241 through bolts, so that the condition that the shield cutter block 4 is worn in the soil sample to be measured at different rotating radiuses can be simulated. In the present embodiment, 3 rows of block mounting holes 241 are provided in the circular turntable 24, and the number of rows of block mounting holes 241 is not particularly limited. As shown in fig. 3, the shield cutter block 4 may be a forward cutter, or a shell cutter as shown in fig. 4, or may be another shield cutter block 4, which is not limited in detail.
In the practical application process, the circular turntable 24 further comprises two reserved mounting holes 242, the reserved mounting holes 242 are symmetrically arranged on two sides of the center of the circular turntable 24, and the reserved mounting holes 242 are used for mounting the fishtail knife.
As shown in fig. 1, the support stand includes a horizontal bar 11, a vertical bar 12, and a base 13. The vertical rod 12 is arranged oppositely, the bottom end of the vertical rod 12 is connected with the base 13, the top end of the vertical rod 12 is used for supporting the horizontal rod 11, the air bag pressurizing assembly is arranged on the base 13, and the fixing frame 21 is connected with the horizontal rod 11.
Specifically, the shield cutter wear simulation device further comprises a laser range finder 6, the laser range finder 6 is arranged on the force transfer beam 14, and the laser range finder 6 is arranged relative to the top surface of the soil sample to be measured. The laser range finder 6 is used for measuring the distance of the test box 3 moving upwards in the moving process, and when the test box 3 moves upwards to a certain distance, the shield cutter abrasion simulation device is closed, and the test is stopped.
Of course, the laser range finder 6 can be replaced by a limiting rod which is horizontally arranged on the vertical rod 12 and used for limiting the test box 3 in the vertical direction.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or may be indirectly contacting the first and second features through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.
Claims (9)
1. A shield cutter abrasion simulation device is characterized by comprising a force transfer beam, a support frame, a rotating mechanism, at least one shield cutter block, a test box and an air bag lifting mechanism;
the force transfer beam is horizontally arranged on the support frame;
one end of the rotating mechanism is connected with the force transfer beam, and the other end of the rotating mechanism is detachably connected with the shield cutter block;
the test box is used for bearing a soil sample to be tested, the upper end of the test box is provided with an opening, the shield cutter block extends into the soil sample to be tested, and the rotating mechanism drives the shield cutter block to rotate in the test box;
the air bag lifting mechanism comprises a plurality of groups of air bag pressurizing assemblies and an air pump for providing air for the air bag pressurizing assemblies;
the air pump provides air for the air bag pressurizing assembly through the air transmission main pipe so as to drive the test box to move up and down;
the air bag pressurizing assembly comprises an air bag, and an air release valve is arranged on the air bag.
2. The shield cutter wear simulation apparatus of claim 1,
the air bag pressurizing assembly also comprises an air transmission branch pipe and a regulating valve;
the air bag is arranged at the bottom of the test box, the air bag is communicated with the main gas transmission pipe through the gas transmission branch pipe, and the regulating valve is arranged on the gas transmission branch pipe.
3. The shield cutter wear simulation apparatus of claim 1,
the rotating mechanism comprises a motor, a fixed frame, a rotating shaft and a circular turntable;
the fixed frame is connected with the force transmission beam, the motor is arranged on the fixed frame, and an output shaft of the motor is connected with one end of the rotating shaft through a coupler;
the other end of the rotating shaft is connected with the circular turntable, and the shield cutter block is detachably connected with the circular turntable;
the motor drives the rotating shaft to rotate so as to drive the shield cutter block on the circular turntable to rotate.
4. The shield cutter wear simulation apparatus of claim 3,
the shield tunneling machine is characterized in that a plurality of rows of cutter block mounting holes are formed in the bottom surface of the circular turntable at equal intervals along the circumferential direction, a plurality of cutter block mounting holes in the same row are arranged in the direction far away from the center of the circular turntable, and the shield tunneling cutter blocks are selectively mounted on the cutter block mounting holes.
5. The shield cutter wear simulation apparatus of claim 4,
the circular turntable also comprises two reserved mounting holes which are symmetrically arranged at two sides of the center of the circular turntable.
6. The shield cutter wear simulation apparatus of claim 3,
still include laser range finder, laser range finder sets up on the biography power roof beam, laser range finder for the top surface setting of the soil sample that awaits measuring.
7. The shield cutter wear simulation apparatus of claim 1,
the height of the soil sample to be tested in the test box is lower than 60% of the height of the test box.
8. The shield cutter wear simulation apparatus of claim 3,
the supporting frame comprises a horizontal rod, a vertical rod and a base, the vertical rod is arranged oppositely, the bottom end of the vertical rod is connected with the base, and the top end of the vertical rod is used for supporting the horizontal rod;
the air bag pressurizing assembly is arranged on the base;
the fixing frame is connected with the horizontal rod.
9. The shield cutter wear simulation apparatus of claim 8,
the device also comprises a limiting rod;
the limiting rod is horizontally arranged on the vertical rod and used for limiting the test box in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120667597.0U CN215525398U (en) | 2021-03-30 | 2021-03-30 | Shield cutter wear simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120667597.0U CN215525398U (en) | 2021-03-30 | 2021-03-30 | Shield cutter wear simulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215525398U true CN215525398U (en) | 2022-01-14 |
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ID=79801230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120667597.0U Active CN215525398U (en) | 2021-03-30 | 2021-03-30 | Shield cutter wear simulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215525398U (en) |
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2021
- 2021-03-30 CN CN202120667597.0U patent/CN215525398U/en active Active
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