CN219454994U - Non-return claw for fixing wide range laser displacement meter - Google Patents
Non-return claw for fixing wide range laser displacement meter Download PDFInfo
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- CN219454994U CN219454994U CN202320197309.9U CN202320197309U CN219454994U CN 219454994 U CN219454994 U CN 219454994U CN 202320197309 U CN202320197309 U CN 202320197309U CN 219454994 U CN219454994 U CN 219454994U
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- displacement meter
- laser displacement
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Abstract
The utility model discloses a non-return claw for fixing a wide-range laser displacement meter, which is used for fixing the wide-range laser displacement meter in a rock drilling hole and comprises C-shaped hoops which are wrapped on the periphery of a laser displacement meter cylinder body and are symmetrically arranged, and is characterized in that: the periphery of the C-shaped clamp which is symmetrically arranged is fixedly connected with a plurality of circumferentially distributed elastic pieces, each elastic piece diverges and extends towards the outside of the drilling hole, and the diverged diameter formed by the circumferentially distributed elastic pieces is larger than the diameter of the drilling hole; each C-shaped clamp end portion extends radially to form a connecting sheet, each connecting sheet is provided with a connecting hole in an cutting mode, and the symmetrically arranged C-shaped clamps are connected through bolts in the connecting holes. According to the utility model, the non-return claw is only required to be arranged on the cylinder body of the laser displacement meter, the cylinder body and the drill hole are fixed through the special structure of the non-return claw, and the synchronous deformation of the laser displacement meter and the surrounding rock is ensured.
Description
Technical Field
The utility model relates to the technical field of geotechnical engineering, in particular to a non-return claw for fixing a wide-range laser displacement meter.
Background
In the whole life cycle of underground engineering construction and operation, surrounding rock deformation monitoring is a key index for safety and stability evaluation of surrounding rock. At present, common surrounding rock deformation monitoring means mainly comprise surrounding rock surface convergence monitoring and surrounding rock internal deformation monitoring, wherein the surrounding rock internal deformation monitoring of an underground tunnel (or a cavity) is generally measured by adopting a displacement meter.
In the installation process of the displacement meter, the fixed ends of the anchor head, the rod body and the like are generally required to be fixed in the drilled hole through concrete grouting, so that the synchronous deformation of the fixed ends of the anchor head and the like and surrounding rock is ensured.
However, the grouting of concrete in a borehole has the following drawbacks: in order to prevent the measuring rod from being poured in the concrete, a PVC pipe needs to be sleeved on the measuring rod, the installation process is complicated, and the labor intensity of staff is high.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the non-return claw for fixing the wide-range laser displacement meter, which does not need to fix a cylinder body in a drilling hole in a grouting mode, only needs to install the non-return claw on the cylinder body of the laser displacement meter, and realizes the fixation of the cylinder body and the drilling hole through the special structure of the non-return claw, thereby ensuring the synchronous deformation of the laser displacement meter and surrounding rock.
In order to achieve the above purpose, the utility model provides a non-return claw for fixing a wide-range laser displacement meter, which is used for fixing the wide-range laser displacement meter in a rock drilling hole, and comprises a C-shaped clamp which is wrapped on the periphery of a laser displacement meter cylinder body and is symmetrically arranged, and is characterized in that: the periphery of the C-shaped clamp which is symmetrically arranged is fixedly connected with a plurality of circumferentially distributed elastic pieces, each elastic piece diverges and extends towards the outside of the drilling hole, and the diverged diameter formed by the circumferentially distributed elastic pieces is larger than the diameter of the drilling hole; each C-shaped clamp end portion extends radially to form a connecting sheet, each connecting sheet is provided with a connecting hole in an cutting mode, and the symmetrically arranged C-shaped clamps are connected through bolts in the connecting holes.
Further, the spring piece divergence angle a is 30-45 degrees.
Further, the thickness of the elastic sheet is 2-4 mm, and the hardness is 500-600 HBW.
Further, the number of the elastic pieces arranged circumferentially is greater than or equal to 3.
Further, the elastic sheet divergent end is in a circular arc shape.
Further, the ratio of the divergent diameter to the drilling diameter formed by the circumferentially distributed elastic sheets is 1.2-1.4:1.
Further, the non-return claw is made of 304 stainless steel.
The utility model has the advantages that:
1. the utility model is characterized in that the non-return claw is sleeved on the laser displacement meter cylinder, the laser displacement meter is integrally plugged into the drill hole during installation, and at the moment, the non-return claw is constrained by the inner wall of the drill hole, and the circumferentially arranged elastic sheet is compressed and tightly attached to the inner wall of the drill hole, so that the laser displacement meter can only be pushed in along the inner direction of the drill hole and can not be pulled out of the drill hole;
2. when the laser displacement meter is pushed to a set depth, the laser displacement meter is pulled towards the outside of the drill hole, and as the elastic sheet on the non-return claw is designed to diverge towards the outside of the drill hole, the elastic sheet can be clamped into the inner wall of the drill hole more firmly under the action of the pulling force, so that the laser displacement meter is fixed in the drill hole, the synchronous deformation of the laser displacement meter and surrounding rock is ensured, and the complicated process of using concrete to pour a fixed rod body can be avoided;
the utility model is used for fixing the non-return claw of the wide-range laser displacement meter, the cylinder body is not required to be fixed in the drilling hole in a grouting mode, the non-return claw is only required to be installed on the cylinder body of the laser displacement meter, the fixation of the cylinder body and the drilling hole is realized through the special structure of the non-return claw, the synchronous deformation of the laser displacement meter and surrounding rock is ensured, the labor intensity of staff is reduced, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic perspective view of the utility model mounted on a wide range laser displacement meter cylinder;
FIG. 2 is a schematic elevational view of the check pawl of the present utility model for securing a wide range laser displacement meter;
FIG. 3 is a schematic perspective view of the single C-clip of FIG. 2;
FIG. 4 is a left side schematic view of FIG. 3;
in the figure: a non-return claw 1 and a laser displacement meter 2;
the non-return pawl 1 includes: the elastic sheet 1-1, the C-shaped clamp 1-2, the connecting sheet 1-3 and the connecting hole 1-4.
Detailed Description
The utility model is described in further detail below with reference to the drawings and specific examples.
In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the utility model.
As shown in fig. 1-4, the non-return claw for fixing the wide-range laser displacement meter is used for fixing the wide-range laser displacement meter 2 in a rock drilling hole, and comprises C-shaped clamps 1-2 which are wrapped on the periphery of a laser displacement meter cylinder body and are symmetrically arranged, wherein a plurality of elastic pieces 1-1 which are circumferentially distributed are fixedly connected to the periphery of the C-shaped clamps 1-2, each elastic piece 1-1 diverges and extends towards the outside of the drilling hole, and the diverged diameter formed by the circumferentially distributed elastic pieces 1-1 is larger than the diameter of the drilling hole; connecting pieces 1-3 are radially extended from the end parts of the C-shaped hoops, connecting holes 1-4 are drilled in each connecting piece 1-3, and the symmetrically arranged C-shaped hoops 1-2 are connected through bolts in the connecting holes 1-4.
In fig. 1, the non-return claws 1 are mounted at both ends of a laser displacement meter 2, and the laser displacement meter 2 is firmly fixed in a rock borehole.
The working principle of the utility model is as follows:
firstly, sleeving a non-return claw 1 on a cylinder of a laser displacement meter 2, and integrally plugging the laser displacement meter 2 into a drill hole during installation, wherein the non-return claw 1 is constrained by the inner wall of the drill hole, and a circumferentially arranged elastic sheet 1-1 is compressed and tightly attached to the inner wall of the drill hole, so that the laser displacement meter 2 can only be pushed in along the inner direction of the drill hole and cannot be pulled out of the drill hole;
secondly, after the laser displacement meter 2 is pushed to the set depth, the laser displacement meter 2 is pulled out of the drill hole forcefully, and as the elastic sheet 1-1 on the non-return claw 1 diverges towards the outside of the drill hole, the elastic sheet 1-1 can be clamped into the inner wall of the drill hole more firmly under the action of the pulling force, so that the laser displacement meter 2 is fixed in the drill hole, the synchronous deformation of the laser displacement meter 2 and surrounding rock is ensured, and the complex process of using concrete to pour a fixed rod body can be avoided.
Preferably, the divergence angle a of the elastic sheet 1-1 is 30-45 degrees. The divergence angle a of the spring plate 1-1 in this embodiment is 35 °. The elastic sheet 1-1 has an overlarge divergence angle and cannot be pushed into a drill hole; when the divergence angle of the elastic sheet 1-1 is too small and the laser displacement meter 2 is pulled out of the drill hole by force, the non-return claw is easily pulled out.
Preferably, the thickness of the elastic sheet 1-1 is 2-4 mm, and the hardness is 500-600 HBW. The thickness of the elastic sheet 1-1 in this embodiment is 3mm, and the hardness is 500HBW. The hardness of the elastic sheet 1-1 is too high, the elastic sheet 1-1 is not easy to deform, and cannot be pushed into a drilled hole; the rigidity of the elastic sheet 1-1 is too small, and the elastic sheet 1-1 cannot be firmly clamped into the inner wall of the drill hole, so that the installation is unstable.
Preferably, the number of the elastic sheets 1-1 arranged circumferentially is greater than or equal to 3. In the embodiment, the number of the elastic pieces 1-1 is 4, and the elastic pieces are uniformly distributed around the C-shaped clamp 1-2, so that the installation firmness is ensured.
Preferably, the divergent end of the elastic sheet 1-1 is arc-shaped, so that the laser displacement meter 2 is conveniently and firmly clamped into the inner wall of the drill hole when being pulled out of the drill hole.
Specifically, the ratio of the divergent diameter to the drilling diameter formed by the circumferentially distributed elastic sheets 1-1 is 1.2-1.4:1. In this embodiment, the ratio of the divergent diameter formed by the circumferentially distributed elastic pieces 1-1 to the diameter of the borehole is 1.3, the ratio is too large, and the divergent elastic pieces 1-1 are not easy to push into the borehole; the ratio is too small, and the elastic sheet 1-1 cannot be firmly clamped into the inner wall of the drill hole, so that the installation is unstable.
Preferably, the non-return claw is made of 304 stainless steel. The 304 stainless steel is a universal stainless steel material, has stronger antirust performance than 200 series stainless steel materials, and has better high temperature resistance, and the limit of the using temperature is generally less than 650 ℃. In addition, the 304 stainless steel has excellent stainless corrosion resistance and better intergranular corrosion resistance, and experiments prove that: the 304 stainless steel has strong corrosion resistance in nitric acid with the concentration less than or equal to 65 percent and the boiling temperature below. The 304 stainless steel also has good corrosion resistance to alkaline solution and most of organic acid and inorganic acid, and is suitable for rock drilling environment.
The installation process of the non-return claw is as follows: the two symmetrical C-shaped clamps 1-2 are sleeved on the cylinder of the laser displacement meter 2, the uniform direction of the divergence of the elastic sheet 1-1 is ensured to face the outside of the drill hole, and the two symmetrical C-shaped clamps 1-2 are screwed by using bolts, so that the C-shaped clamps 1-2 are firmly fixed on the cylinder of the laser displacement meter 2.
The utility model is used for fixing the non-return claw of the wide-range laser displacement meter, the cylinder body is not required to be fixed in the drilling hole in a grouting mode, the non-return claw is only required to be installed on the cylinder body of the laser displacement meter, the fixation of the cylinder body and the drilling hole is realized through the special structure of the non-return claw, the synchronous deformation of the laser displacement meter and surrounding rock is ensured, the labor intensity of staff is reduced, and the working efficiency is improved.
The above examples are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present utility model should be made in the equivalent manner, and the embodiments are included in the protection scope of the present utility model.
Claims (7)
1. A non return claw for fixing wide-range laser displacement meter for fix wide-range laser displacement meter (2) in rock drilling, it is including parcel at laser displacement meter barrel periphery, and be C type clamp (1-2) of symmetrical arrangement, its characterized in that: the periphery of the C-shaped clamp (1-2) which is symmetrically arranged is fixedly connected with a plurality of elastic pieces (1-1) which are distributed circumferentially, each elastic piece (1-1) diverges and extends towards the outside of a drilling hole, and the divergence diameter formed by the elastic pieces (1-1) distributed circumferentially is larger than the diameter of the drilling hole; connecting pieces (1-3) are radially extended from the end parts of the C-shaped hoops, connecting holes (1-4) are drilled in each connecting piece (1-3), and the symmetrically arranged C-shaped hoops (1-2) are connected through bolts in the connecting holes (1-4).
2. The backstop jaw for fixing a wide-range laser displacement meter according to claim 1, wherein: the divergence angle a of the elastic sheet (1-1) is 30-45 degrees.
3. The backstop jaw for fixing a wide-range laser displacement meter according to claim 2, wherein: the thickness of the elastic sheet (1-1) is 2-4 mm, and the hardness is 500-600 HBW.
4. A non-return jaw for securing a wide-range laser displacement meter as claimed in claim 3, wherein: the number of the elastic pieces (1-1) arranged circumferentially is more than or equal to 3.
5. The non-return pawl for securing a wide-range laser displacement meter according to claim 4, wherein: the divergent end of the elastic sheet (1-1) is arc-shaped.
6. The backstop jaw for fixing a wide-range laser displacement meter according to claim 1, wherein: the ratio of the divergent diameter to the drilling diameter formed by the circumferentially distributed elastic sheets (1-1) is 1.2-1.4:1.
7. The backstop jaw for fixing a wide-range laser displacement meter according to claim 1, wherein: the non-return claw is made of 304 stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320197309.9U CN219454994U (en) | 2023-02-13 | 2023-02-13 | Non-return claw for fixing wide range laser displacement meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320197309.9U CN219454994U (en) | 2023-02-13 | 2023-02-13 | Non-return claw for fixing wide range laser displacement meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219454994U true CN219454994U (en) | 2023-08-01 |
Family
ID=87382729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320197309.9U Active CN219454994U (en) | 2023-02-13 | 2023-02-13 | Non-return claw for fixing wide range laser displacement meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219454994U (en) |
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2023
- 2023-02-13 CN CN202320197309.9U patent/CN219454994U/en active Active
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