Lateral confinement expansion restraint device capable of freely contracting and expanding
By designing a freely expandable and contractible lateral confinement constraint device, and utilizing a combination of deformable plates and clamping parts, the problem of inaccurate measurement caused by rock sample size deviation was solved, achieving more accurate measurement results.
Patent Information
- Application Number
- CN202520053010.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-10
AI Technical Summary
Existing lateral confinement expansion restraint devices, due to their fixed size, cannot adapt to the deviation in rock sample diameter during core sampling, resulting in inaccurate measurement data.
The design incorporates a freely expandable and contractible lateral confinement device. This device, consisting of a cylindrical sleeve made of deformable plates, can contract or expand according to the diameter of the rock sample. Combined with a clamping part for locking, it ensures the stability of the rock sample during the expansion process.
It enables flexible adaptation to rock samples of different sizes, improves the accuracy and reliability of measurement data, and avoids measurement errors caused by size mismatch.
Smart Images
Figure CN223883568U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to indoor test auxiliary equipment field, concretely relates to a side limit expansion restraint device of free shrinkage. BACKGROUND
[0002] To solve the series of engineering problems that the swelling rock brings to railway construction under the influence of underground water, indoor test is often carried out to study its swelling property, at this time, a series of parameters such as free swelling rate, side limit restraint swelling rate and swelling force need to be determined.
[0003] When measuring the side limit restraint swelling rate, a device called "side limit expansion restraint sleeve ring" is usually used. This device can apply a certain lateral pressure to simulate the stress condition of the material in the actual engineering. Then, by measuring the height change of the material before and after water absorption, the side limit restraint swelling rate can be calculated. However, in the determination of the side limit restraint swelling rate, the side limit restraint expansion sleeve ring made according to the specification is a fixed size steel ring with an inner diameter of 50mm. But during the coring process by the coring machine, the diameter of the cylindrical rock sample often deviates by a few millimeters, which cannot be completely fixed in size. This leads to the fact that the size of the restraint device is fixed, while the size of the rock sample is not fixed. Therefore, for the sample with smaller diameter, the conventional restraint device cannot play the role of side limit restraint, and the measured data will not be accurate.
[0004] Therefore, it is urgent to design a new side limit expansion restraint device in this field. UTILITY MODEL CONTENTS
[0005] In view of the above problems, the utility model aims to provide a side limit expansion restraint device that can freely shrink and expand, which can overcome the defect that the size of the rock sample cannot completely match the size of the side limit restraint device, making the measured data more accurate and the results more effective.
[0006] The main idea of the technical solution adopted by the utility model is that the constraint part is composed of a deformable plate forming a circular tube sleeve by twisting inward, which can tightly wrap the rock sample to be measured and play the role of side limit expansion restraint, allowing only axial swelling deformation, and can more flexibly adapt to rock samples of various sizes, avoiding the defect that the size of the rock sample cannot completely match the size of the side limit restraint device under the conventional fixed size side limit restraint device, so that the measured data is more accurate and the results are more effective.
[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0008] The application discloses a free-zooming lateral-limiting expansion restraining device, which comprises a restraining part formed by a deformable plate of a circular tubular sleeve twisted inwardly, and a clamping part.
[0009] According to the above technical scheme, the rock sample to be measured is a cylindrical rock sample, and the length of the deformable plate is 2-3 times the circumference of the rock sample to be measured.
[0010] According to the above technical scheme, the thickness of the deformable plate is not greater than 2 mm.
[0011] According to the above technical scheme, the clamping part comprises a clamping ring and a locking device, the clamping ring is sleeved on the outer side of the restraining part, and the locking device is used for locking the clamping ring.
[0012] According to the above technical scheme, two clamping rings are sleeved on the outer side of the restraining part, and the two clamping rings are symmetrically arranged upward and downward.
[0013] According to the above technical scheme, the two clamping rings are respectively arranged at 1 / 6-1 / 4 of the upper and lower sides of the restraining part.
[0014] According to the above technical scheme, the clamping ring is a circular ring with a notch.
[0015] According to the above technical scheme, the notch of the clamping ring is 10-15 mm.
[0016] According to the above technical scheme, a connector is arranged at the notch of the clamping ring, and the connector is provided with a through hole for the locking device to pass through.
[0017] According to the above technical scheme, the locking device comprises a bolt and a nut matched with the bolt.
[0018] The technical effects achieved by the application are as follows:
[0019] The application discloses a free-shrinkable lateral-limiting expansion restraint device, which is characterized by a deformable plate of a restraint part in a circular tube sleeve twisted inwardly, lateral restraint of a rock sample to be measured by the deformable plate twisted inwardly to form the circular tube sleeve, and locking and fixing of the restraint part by a clamping part outside the deformable plate, so that the restraint part can be tightly wrapped around the rock sample to be measured and can be tightly contracted or expanded according to the length of the rock sample to be measured, and the rock sample can only be axially expanded and deformed, and can be more flexible to adapt to rock samples of various sizes, so as to avoid the defect that the size of the rock sample cannot be completely matched with the size of the lateral-limiting restraint device of a conventional fixed size, thereby making the measured data more accurate and the obtained result more effective. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a whole structure schematic view of a free-shrinkable lateral-limiting expansion restraint device in the embodiment of the application.
[0021] Figure 2 It is a structure schematic view of a free-shrinkable restraint part in the embodiment of the application.
[0022] Figure 3 It is a connection structure schematic view of a free-shrinkable clamping part and a fastening part in the embodiment of the application.
[0023] Marked in the figure: 1-restraint part, 2-clamping ring, 3-locking device, 4-connector, 5-bolt, 6-nut. DETAILED DESCRIPTION
[0024] The application will be described in detail below with reference to the drawings.
[0025] The application and the embodiments thereof have been described above, and the description is not restrictive, and the actual embodiments are not limited to the above.
[0026] In general, if a person skilled in the art is inspired by the application, without departing from the creative concept of the application, similar structural modes and embodiments can be designed without creativity, and all of them should belong to the protection scope of the application.
[0027] The inventor found that in the process of determining the lateral restraint expansion rate, the current lateral restraint expansion sleeve ring made according to the requirements in the specification is a fixed-size steel ring with an inner diameter of 50 mm, but in the process of coring by the coring machine, the diameter of the cylindrical rock sample often deviates by a few millimeters, and the size cannot be completely fixed, which leads to the fact that the size of the restraint device is fixed, while the size of the rock sample is not fixed, so for the sample with a smaller diameter, the conventional restraint device cannot play a lateral restraint role, and the data measured will not be accurate.
[0028] Based on the above finding, the application provides a lateral expansion restraint device capable of free expansion and contraction, which is composed of a deformable plate of a circular tubular sleeve formed by twisting inward, and the deformable plate of the circular tubular sleeve formed by twisting inward is used to laterally constrain the rock sample to be measured, so that the restraint part can be arbitrarily contracted or expanded with the length of the diameter of the rock sample to be measured, and the rock sample to be measured is tightly wrapped, plays a role of lateral expansion restraint, and can only occur axial expansion deformation, can more flexibly adapt to rock samples of various sizes, avoids the defect that the size of the rock sample cannot completely match the size of the lateral restraint device of the conventional fixed-size lateral restraint device, so that the related data measured is more accurate, and the result obtained is more effective.
[0029] As shown in the accompanying drawings, Figure 1 a lateral expansion restraint device capable of free expansion and contraction in the embodiment of the application includes a restraint part 1, the restraint part 1 is composed of a deformable plate of a circular tubular sleeve formed by twisting inward, the deformable plate is used to form a circular tubular sleeve by twisting inward to laterally constrain the rock sample to be measured, and the outer side of the deformable plate is provided with a clamping part.
[0030] The application discloses a freely contractible and expandable lateral constraint device, which is used for measuring the lateral constraint expansion rate of rock and is composed of a deformable plate of a circular sleeve formed by inwardly twisting. The deformable plate of the circular sleeve formed by inwardly twisting laterally constrains the rock sample to be measured, so that the application can be arbitrarily contracted or expanded according to the length of the diameter of the rock sample to be measured, tightly wraps the rock sample to be measured, plays a role of lateral constraint expansion, and makes the rock sample to be measured only axially expand and deform, so that the application can more flexibly adapt to rock samples of various sizes, avoids the defect that the size of the rock sample cannot completely match the size of the lateral constraint device of the conventional fixed size, and thus makes the measured data more accurate and the obtained result more effective. The application is provided with a clamping part outside the constraint part, the constraint part composed of the deformable plate of the circular sleeve formed by inwardly twisting is tightly contacted with the rock sample to be measured by locking of the clamping part, the rock sample to be measured is prevented from sliding out of the constraint part or being loose in the expansion process, the stability of the rock sample to be measured in the expansion process is ensured, and thus the accuracy and reliability of the measured data are improved.
[0031] It should be noted that in some embodiments, the rock sample to be measured is a cylindrical rock sample, the constraint part is composed of the deformable plate of the circular sleeve formed by inwardly twisting, the deformable plate has good plasticity, can be arbitrarily contracted or expanded according to the length of the diameter of the cylindrical rock sample, tightly wraps the rock sample to be measured, plays a role of lateral constraint expansion, and makes the cylindrical rock sample to be measured only axially expand and deform. The length of the deformable plate is 2-3 times the circumference of the rock sample to be measured, the deformable plate is inwardly twisted for 2-3 turns to form a circular sleeve to laterally constrain the rock sample to be measured. The thickness of the deformable plate is controlled to be about 2mm, and the thickness of the deformable plate is too large to affect the tightness of the wrapping of the rock sample to be measured, thereby affecting the accuracy of the final result. The width of the deformable plate is usually greater than the height of the rock sample to be measured.
[0032] It should be noted that since the height of the rock sample in the test specification is required to be 50mm, in some embodiments, the height of the deformable plate used for inwardly twisting to form a circular sleeve to laterally constrain the rock sample to be measured can be set to be about 55mm. By setting the height of the deformable plate to be about 55mm, the height of the deformable plate is higher than the height of the rock sample, a certain space can be reserved between the deformable plate and the rock sample to be measured, the rock sample can be kept in a laterally constrained state in the whole test process, the reliability of the test result of the lateral constraint expansion rate of the rock sample is improved, and the error is reduced.
[0033] For example, in some embodiments, the diameter of the cylindrical rock sample to be determined is 50 mm, the length of the deformable plate can be 2 times the circumference of the cylindrical rock sample to be determined, and the thickness is 2 mm. When in use, the constraint part formed by the deformable plate of the circular tube-shaped sleeve twisted inwardly is twisted inwardly for 2 turns to form a circular tube-shaped sleeve to laterally constrain the rock sample to be determined. The hoop part is arranged outside the constraint part, and the hoop part is locked to make the circular tube-shaped sleeve formed by the constraint part form a close contact with the cylindrical rock sample to be determined, so as to prevent the rock sample to be determined from slipping out of the constraint part or loosening during the expansion process, and to ensure the stability of the rock sample to be determined during the expansion process. At the same time, the defect that the size of the rock sample cannot completely match the size of the lateral constraint device under the conventional fixed size of the lateral constraint device is avoided, so that the related data determined is more accurate, thereby improving the accuracy and reliability of the related data determined.
[0034] In the embodiments of the present application, the hoop part includes a clamping ring 2 and a locker 3, the clamping ring 2 is sleeved outside the constraint part 1, and the locker 3 is used to lock the clamping ring 2. The clamping ring 2 and the locker 3 are locked by the locker to constrain the clamping ring, so that the circular tube-shaped sleeve formed by the constraint part forms a close contact with the cylindrical rock sample to be determined, prevents the rock sample to be determined from slipping out of the constraint part or loosening during the expansion process, and ensures the stability of the rock sample to be determined during the expansion process. At the same time, the defect that the size of the rock sample cannot completely match the size of the lateral constraint device under the conventional fixed size of the lateral constraint device is avoided, so that the related data determined is more accurate, thereby improving the accuracy and reliability of the related data determined.
[0035] In some embodiments, the clamping ring 2 is composed of a circular ring with a notch, the notch of the clamping ring 2 is provided with a connector 4, and the connector 4 is provided with a through hole for the locker 3 to pass through. Specifically, the locker 3 includes a bolt 5 and a nut 6 matched with the bolt 5, and the connector 4 is provided with a through hole for the bolt 5 to pass through. In use, the clamping ring 2 is sleeved outside the constraint part 1, the rod part of the bolt 5 is inserted through the through hole of the connector 4, the bolt 5 and the nut 6 are threadedly connected, and the clamping ring 2 is continuously contracted by continuously tightening the nut 6, so as to apply a lateral constraint force to the constraint part 1, so that the circular tube-shaped sleeve formed by the constraint part tightly wraps the rock sample to be determined to form a close contact, plays a role of lateral expansion constraint, and makes the rock sample to be determined only have axial expansion deformation. The rock sample to be determined is prevented from slipping out of the constraint part or loosening during the expansion process, the stability of the rock sample to be determined during the expansion process is ensured, and the accuracy and reliability of the related data determined are improved.
[0036] In some embodiments, the clamping ring is a circular iron ring with a gap of 10-15 mm, the connector 4 is welded at the gap of the clamping ring 2, the connector 4 is an iron sheet with a circular through hole for the bolt 5 to pass through, the bolt 5 and the nut 6 are threadedly connected by passing the shank of the bolt 5 through the circular through hole of the iron sheet, and the circular iron ring is continuously contracted by continuously tightening the nut 6, so as to exert a lateral constraint force on the circular sleeve formed by the inwardly twisted and rolled constraint part, so that the circular tubular sleeve formed by the constraint part tightly wraps the rock sample to be measured to form a tight contact, plays a role of lateral expansion constraint, and makes the rock sample to be measured only have axial expansion deformation, prevents the rock sample to be measured from slipping out of the constraint part or loosening during expansion, ensures the stability of the rock sample to be measured during expansion, and thus improves the accuracy and reliability of the measured related data.
[0037] It should be noted that in the embodiments of the present application, the width of the iron sheet of the connector is the same as the thickness of the clamping part circular iron ring, the width of the connector is twice the thickness of the clamping part, the connectors arranged on the clamping ring are parallel to each other, the bolt of the locking device is screwed through the through hole of the connector, the circular iron ring is more constrained, the circular iron ring is continuously contracted, a lateral constraint force is exerted on the circular sleeve formed by the inwardly twisted and rolled constraint part, the stability of the constraint of the rock sample to be measured during expansion is ensured, and thus the accuracy and reliability of the measured related data are improved.
[0038] It should be noted that the circular through holes on the iron sheet of the connector should be equal in size and coaxial, that is, the straight line connecting the centers of the circular through holes on the iron sheet of the connector should be perpendicular to the long side direction of the iron sheet of the connecting part. The inner diameter of the bolt 5 should be slightly smaller than the diameter of the circular through hole of the iron sheet of the connecting part, so that the bolt 5 can pass through the circular through hole of the iron sheet smoothly without leaving a large gap. The length of the bolt 5 should be about twice the distance between the iron sheets of the connecting part. The inner diameter of the nut 6 is completely matched with the inner diameter of the bolt 5, and the thickness of the nut 6 is greater than the length of the gap between the bolt 5 and the circular through hole of the iron sheet of the connecting part, so that the nut 6 and the bolt 5 can be respectively clamped outside the corresponding circular iron sheets, the locking of the clamping part is completed, and the constraint of the constraint part 1 is completed.
[0039] It should be noted that in the embodiments of the present application, the nut 6 and the bolt 5 should not be too tight when locking the clamping part, otherwise the rock sample to be measured may be damaged during the tightening process.
[0040] In some embodiments, two clamping rings 2 are arranged on the outside of the constraint part 1 in a symmetrical manner.
[0041] In the embodiments of the present application, the two clamping rings are symmetrically arranged up and down, and the position part of the two clamping rings arranged symmetrically up and down is not close to the two ends or the middle of the constraint part 1, so that the constraint part is better constrained by the clamping ring, and the formed circular tubular sleeve tightly wraps the rock sample to be measured to form a close contact, which plays a role of lateral expansion constraint.
[0042] It should be noted that in some embodiments, the two clamping rings 2 are respectively arranged at the upper and lower 1 / 6-1 / 4 of the constraint part 1. By arranging the clamping ring 2 at the 1 / 6-1 / 4 of the constraint part, the two clamping rings are respectively arranged at the positions above and below the middle of the constraint part, so that the clamping ring exerts lateral expansion constraint on the constraint part in the up and down contraction, so that the constraint part tightly wraps the rock sample to be measured to form a close contact, avoids the loosening of the rock sample to be measured in the constraint part during the expansion process, ensures the stability of the rock sample to be measured during the expansion process, and thus improves the accuracy and reliability of the measured related data.
[0043] In the embodiments of the present application, a lateral expansion constraint device capable of free expansion is applied to the lateral constraint expansion rate test of rock, and in application, first, the rock sample to be measured is prepared according to the lateral constraint expansion rate test standard of rock, and the shape of the rock sample to be measured is cylindrical; second, the constraint part composed of the deformable plate of the circular tubular sleeve formed by inwardly twisting is twisted inwardly around the periphery of the cylindrical rock sample to be measured to form a circular tubular sleeve for lateral constraint of the rock sample to be measured, and then the clamping ring 2 and the lock 3 are sleeved outside the circular tubular sleeve formed by the constraint part, and the lock 3 is used to lock the clamping ring 2 so that the circular tubular sleeve formed by the constraint part forms a close contact with the cylindrical rock sample to be measured, and the lock 3 is used to lock the clamping ring 2 to constrain the constraint part 1 to form lateral constraint on the cylindrical rock sample to be measured, and the lateral constraint expansion rate of rock is measured.
[0044] When the lateral constraint expansion rate of rock is measured, the vaseline is applied to the inner wall of the constraint part in advance to prevent the water in the constraint part from flowing out.
[0045] In the application, the constraint part is formed by the deformable plate of the circular tube sleeve formed by twisting inward, and the deformable plate twists inward to form a circular tube sleeve to laterally constrain the rock sample to be measured, so that the free shrinkable lateral expansion constraint device can be arbitrarily tightened or expanded with the length of the diameter of the rock sample to be measured, and tightly wrap the rock sample to be measured, play a role of lateral expansion constraint, so that it can only occur axial expansion deformation, can more flexible adapt to rock samples of various sizes, avoid the defect that the size of the rock sample and the size of the lateral constraint device cannot be completely matched caused by the conventional fixed size lateral constraint device, so that the related data measured is more accurate, and the result obtained is more effective. The tight hoop ring and the lock are arranged outside the constraint part, and the tight hoop ring is locked by the lock to form a circular tube sleeve with the rock sample to be measured, prevent the rock sample to be measured from slipping out or loosening in the expansion process, ensure the stability of the rock sample to be measured in the expansion process, thereby improve the accuracy and reliability of the related data measured.
[0046] The above only describes the preferred embodiments of the application and is not intended to limit the application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the application shall be included in the protection scope of the application.
Claims
1. A free-zoned lateral expansion restraint device, comprising: The constraint part (1) is composed of a deformable plate of a circular tube sleeve twisted inwardly, which is used to constrain the lateral direction of the rock sample to be measured, and the outside of the deformable plate is sleeved with a clamping part.
2. A self-erecting, laterally confined restraint device as defined in claim 1, wherein, The rock sample to be measured is a cylindrical rock sample, and the length of the deformable plate is 2-3 times the circumference of the rock sample to be measured.
3. A self-erecting, laterally limited expansion restraint as defined in claim 1, wherein, The thickness of the deformable plate is not greater than 2 mm.
4. A self-erecting, laterally limited expansion restraint as defined in claim 1, wherein, The clamping part includes a clamping ring (2) and a lock (3), the clamping ring (2) is sleeved on the outside of the constraint part (1), and the lock (3) is used to lock the clamping ring (2).
5. A self-erecting, laterally limited expansion restraint as defined in claim 4, wherein, The outside of the constraint part (1) is sleeved with two clamping rings (2), and the two clamping rings (2) are symmetrically arranged upward and downward.
6. A self-erecting, laterally limited expansion restraint as defined in claim 4, wherein, The two clamping rings (2) are respectively arranged at 1 / 6-1 / 4 of the upper and lower constraint part (1).
7. A self-erecting, laterally limited expansion restraint as defined in claim 4, wherein, The clamping ring (2) is a circular ring with a notch.
8. A self-erecting, laterally limited expansion restraint as defined in claim 7, wherein, The notch of the clamping ring (2) is 10-15 mm.
9. A self-erecting, laterally limited expansion restraint as defined in claim 8, wherein, The clamping ring (2) is provided with a connector (4) at the notch, and the connector (4) is provided with a through hole for the lock (3) to pass through.
10. A self-erecting, laterally limited expansion restraint as defined in claim 9, wherein, The lock (3) includes a bolt (5) and a nut (6) matched with the bolt (5).