CN111398025A - Confining pressure loading device for drop hammer impact test - Google Patents
Confining pressure loading device for drop hammer impact test Download PDFInfo
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- CN111398025A CN111398025A CN202010313280.7A CN202010313280A CN111398025A CN 111398025 A CN111398025 A CN 111398025A CN 202010313280 A CN202010313280 A CN 202010313280A CN 111398025 A CN111398025 A CN 111398025A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0039—Hammer or pendulum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0256—Triaxial, i.e. the forces being applied along three normal axes of the specimen
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The embodiment of the invention particularly discloses a confining pressure loading device for a drop hammer impact test, which comprises a supporting base and a drop hammer, wherein the supporting base is provided with a supporting base; a second supporting back plate is fixedly arranged on the upper surface of the rear side of the supporting base, a first supporting back plate is fixedly arranged on the upper surface of the right side of the supporting base, a fixed vertical plate corresponding to the first supporting back plate is arranged on the left side of the supporting base, and a first lateral pressing assembly is arranged on the fixed vertical plate; a second lateral pressing component corresponding to the second supporting back plate is arranged on the front side of the supporting base; and the support base is also provided with a support base plate through a hydraulic telescopic cylinder support. According to the embodiment of the invention, the rock sample placed on the supporting base plate is clamped and fixed through the first lateral pressure assembly and the second lateral pressure assembly, the height position of the supporting base plate is adjusted through the hydraulic telescopic cylinder, then the column is hammered through the drop hammer, and the impact test is carried out on the rock sample between the supporting base plate and the supporting top plate through the conduction of the column.
Description
Technical Field
The invention relates to the technical field of rock dynamics tests, in particular to a confining pressure loading device for a drop hammer impact test.
Background
In reality, the engineering rock mass is often subjected to dynamic load, and the research on the dynamic load characteristics of the rock has important significance. At present, the dynamic characteristics of engineering rock masses are mostly researched by adopting an SHPB (short shear-stress rupture disc) and drop hammer impact testing machine, wherein the drop hammer impact testing machine is simple in structure and is widely applied. But the engineering rock mass is in a three-way stress state when disturbed by dynamic load. And most of the drop hammer impact tests of the rock do not apply confining pressure, the real stress condition cannot be reflected, and the obtained dynamics test result and the real characteristic thereof exist.
Therefore, to obtain the real dynamic parameters and characteristics of the engineering rock mass, the experimental equipment should reflect the real stress condition, that is, when the engineering rock mass is subjected to the dynamic load action, the engineering rock mass should be in a static load compression state at the same time. At present, the confining pressure loading device applied to the rock impact test mostly adopts the confining pressure device with a single structure to carry out confining pressure application, so that the problems of unstable confining pressure, inconvenient operation and low confining pressure loading precision exist. Therefore, it is necessary to design a confining pressure loading device for drop hammer impact test.
Disclosure of Invention
The invention aims to provide a confining pressure loading device for a drop hammer impact test, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a confining pressure loading device for a drop hammer impact test comprises a supporting base and a drop hammer;
a second supporting back plate is fixedly arranged on the upper surface of the rear side of the supporting base, a first supporting back plate is fixedly arranged on the upper surface of the right side of the supporting base, a fixed vertical plate corresponding to the first supporting back plate is arranged on the left side of the supporting base, and a first lateral pressing assembly is arranged on the fixed vertical plate;
a second lateral pressing component corresponding to the second supporting back plate is arranged on the front side of the supporting base; a support base plate is further supported and arranged on the support base through a hydraulic telescopic cylinder, and support top plates corresponding to the support base plate are arranged on the tops of the first support back plate and the second support back plate in a vertically sliding mode;
a cylinder is fixedly arranged on the supporting top plate, and the drop hammer is positioned right above the cylinder;
the first lateral pressing assembly comprises a fixed vertical plate fixedly arranged on the supporting base, a cavity is formed in the fixed vertical plate, a supporting plug is arranged at the opening end of the cavity in a sealing and sliding manner, and a first lateral pressing plate of the first lateral pressing assembly is fixedly arranged at the outer end of the supporting plug; the first lateral pressure component further comprises an air pump used for blowing air into the cavity, an air outlet of the air pump is connected with an air pipe, the other end of the air pipe extends into the cavity, the air pump blows air into the cavity, and the supporting plug can be pushed to move to enable the first lateral pressure plate to compress and fix the rock sample.
As a further limitation of the technical scheme of the embodiment of the invention, a pressure gauge for measuring the pressure in the cavity is further arranged on the outer wall of the fixed vertical plate.
As a further limitation of the technical solution of the embodiment of the present invention, the first lateral pressing assembly further includes pressing columns fixedly installed at four corners of the first lateral pressing plate, each of the pressing columns is fixedly installed with a supporting slider, and each of the supporting sliders is fixedly installed with a first magnet.
As a further limitation of the technical scheme of the embodiment of the invention, four corners of the fixed vertical plate are respectively provided with a cavity corresponding to the compression columns one by one, each cavity is internally and fixedly provided with a second magnet, the supporting slide block is slidably arranged in the cavity, magnetic south poles and magnetic north poles of the first magnet and the second magnet are opposite in direction, and the first magnet and the second magnet repel each other, so that the first lateral pressing plate can be further pushed to move to compress and fix the rock sample.
As a further limitation of the technical solution of the embodiment of the present invention, the second supporting back plate is provided with a supporting through hole; the second side presses the subassembly including running through and locates support the connecting screw rod in the through-hole, the second side presses the subassembly still includes second side clamp plate and supporting pressure plate, the second side clamp plate with support and connect through at least two sets of supporting spring supports between the clamp plate, still fixed be provided with on the second side clamp plate with the corresponding complex direction slide bar of supporting spring, the direction slide bar runs through to slide and locates on the supporting pressure plate, just the tip of direction slide bar is equipped with the anticreep swivel nut through threaded connection mode cover.
As a further limitation of the technical scheme of the embodiment of the invention, the other end of the connecting screw rod penetrates through and is slidably arranged on the supporting pressure plate, and the two ends of the connecting screw rod are respectively sleeved with the locking threaded sleeves in a threaded connection manner, so that the distance between the supporting pressure plate and the second supporting back plate can be adjusted, then the supporting pressure plate is close to the second supporting back plate, and at the moment, under the elastic supporting action of the supporting spring, the second side pressure plate can be pushed to move to compress and fix the side plate of the rock sample.
As a further limitation of the technical scheme of the embodiment of the invention, one side of the supporting base plate is provided with a supporting groove, a connecting column is arranged in the supporting groove in a supporting and sliding manner through a connecting spring, and the other end of the connecting column is fixedly provided with a pressing block.
Compared with the prior art, the embodiment of the invention uses the air pump to blow air into the cavity, and can push the support plug to move to enable the first side pressure plate to compress and fix the rock sample; the directions of the magnetic south pole and the magnetic north pole of the first magnet and the second magnet are opposite, the first magnet and the second magnet repel each other, and the first lateral pressing plate can be further pushed to move to compress and fix the rock sample; the supporting pressure plate is close to the second supporting back plate, and the second side pressure plate can be pushed to move to press and fix the side plate of the rock sample under the elastic supporting action of the supporting spring. In summary, in the confining pressure loading device for the drop hammer impact test provided by the embodiment of the invention, the first lateral pressure assembly and the second lateral pressure assembly clamp and fix the rock sample placed on the supporting base plate, the hydraulic telescopic cylinder is used for adjusting the height position of the supporting base plate, then the drop hammer is used for hammering the cylinder, and the impact test is performed on the rock sample between the supporting base plate and the supporting top plate through the conduction of the cylinder, so that the effectiveness of the test and the reliability of the test result are ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a front view structural diagram of a drop hammer impact test confining pressure loading device provided in an embodiment of the present invention.
Fig. 2 is a side view structural diagram of a drop hammer impact test confining pressure loading device provided in an embodiment of the invention.
Fig. 3 is an enlarged schematic view of a portion a in fig. 1.
Fig. 4 is an enlarged schematic structural view of a portion B in fig. 1.
FIG. 5 shows a confining pressure loading device for drop hammer impact test according to an embodiment of the present invention
In the figure: 1-a supporting base, 2-a first supporting back plate, 3-a supporting base plate, 4-a second supporting back plate, 5-a cylinder, 6-a drop hammer, 7-a supporting top plate, 8-a supporting through hole, 9-a hydraulic telescopic cylinder, 10-a second side pressing plate, 11-an anti-drop screw sleeve, 12-a fixed vertical plate, 13-a cavity, 14-a supporting plug, 15-a pressure gauge, 16-an air pump, 17-an air pipe, 18-a first side pressing plate, 19-a pressing column, 20-a cavity, 21-a supporting slide block, 22-a first magnet, 23-a second magnet, 24-a pressing block, 25-a supporting groove, 26-a connecting column, 27-a connecting spring, 28-a supporting pressing plate, 29-a connecting screw rod and 30-a locking screw sleeve, 31-guide slide bar, 32-support spring.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in 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.
Example 1
As shown in fig. 1-2, in the embodiment provided by the present invention, a drop hammer impact test confining pressure loading device includes a support base 1 and a drop hammer 6, a second support back plate 4 is fixedly installed on an upper surface of a rear side of the support base 1, a first support back plate 2 is fixedly installed on an upper surface of a right side of the support base 1, a fixed vertical plate 12 corresponding to the first support back plate 2 is installed on a left side of the support base 1, and a first lateral pressure assembly is installed on the fixed vertical plate 12; a second side pressing component corresponding to the second supporting back plate 4 is arranged on the front side of the supporting base 1; the supporting base 1 is also provided with a supporting base plate 3 through a hydraulic telescopic cylinder 9 in a supporting way, and the top parts of the first supporting back plate 2 and the second supporting back plate 4 are provided with supporting top plates 7 corresponding to the supporting base plate 3 in a vertically sliding way;
further, in the embodiment provided by the invention, the supporting top plate 7 is fixedly provided with the column 5, and the drop hammer 6 is positioned right above the column 5.
In the confining pressure loading device for the drop hammer impact test provided by the embodiment of the invention, the rock sample placed on the supporting base plate 3 is clamped and fixed through the first lateral pressure assembly and the second lateral pressure assembly, the height position of the supporting base plate 3 is adjusted through the hydraulic telescopic cylinder 9, then the column 5 is hammered through the drop hammer 6, the rock sample between the supporting base plate 3 and the supporting top plate 7 is subjected to the impact test through the conduction of the column 5, and the effectiveness of the test and the reliability of the test result are ensured.
Example 2
As shown in fig. 1-2, in the embodiment provided by the present invention, a drop hammer impact test confining pressure loading device includes a support base 1 and a drop hammer 6, a second support back plate 4 is fixedly installed on an upper surface of a rear side of the support base 1, a first support back plate 2 is fixedly installed on an upper surface of a right side of the support base 1, a fixed vertical plate 12 corresponding to the first support back plate 2 is installed on a left side of the support base 1, and a first lateral pressure assembly is installed on the fixed vertical plate 12; a second side pressing component corresponding to the second supporting back plate 4 is arranged on the front side of the supporting base 1; the supporting base 1 is also provided with a supporting base plate 3 through a hydraulic telescopic cylinder 9 in a supporting way, and the top parts of the first supporting back plate 2 and the second supporting back plate 4 are provided with supporting top plates 7 corresponding to the supporting base plate 3 in a vertically sliding way;
further, in the embodiment provided by the invention, the supporting top plate 7 is fixedly provided with the column 5, and the drop hammer 6 is positioned right above the column 5.
In the confining pressure loading device for the drop hammer impact test provided by the embodiment of the invention, the rock sample placed on the supporting base plate 3 is clamped and fixed through the first lateral pressure assembly and the second lateral pressure assembly, the height position of the supporting base plate 3 is adjusted through the hydraulic telescopic cylinder 9, then the column 5 is hammered through the drop hammer 6, the rock sample between the supporting base plate 3 and the supporting top plate 7 is subjected to the impact test through the conduction of the column 5, and the effectiveness of the test and the reliability of the test result are ensured.
As shown in fig. 1-3, in the embodiment provided by the present invention, the first lateral pressing assembly includes a fixed vertical plate 12 fixedly installed on the support base 1, a cavity 13 is formed in the fixed vertical plate 12, a support plug 14 is sealingly and slidably installed at an open end of the cavity 13, and a first lateral pressing plate 18 included in the first lateral pressing assembly is fixedly installed at an outer end of the support plug 14; the first lateral pressure assembly further comprises an air pump 16 used for blowing air into the cavity 13, an air outlet of the air pump 16 is connected with an air pipe 17, the other end of the air pipe 17 extends into the cavity 13, and the air pump 16 blows air into the cavity 13 to push the support plug 14 to move so that the first lateral pressure plate 18 compresses and fixes the rock sample;
further, a pressure gauge 15 for measuring the pressure in the cavity 13 is further disposed on the outer wall of the fixed vertical plate 12.
Further, as shown in fig. 1, fig. 3 and fig. 5, in an embodiment of the present invention, the first lateral pressing assembly further includes pressing columns 19 fixedly installed at four corners of the first lateral pressing plate 18, each of the pressing columns 19 is fixedly installed with a supporting slider 21, and each of the supporting sliders 21 is fixedly installed with a first magnet 22; the four corners of the fixed vertical plate 12 are provided with cavities 20 corresponding to the compression columns 19 one by one, a second magnet 23 is fixedly mounted in each cavity 20, the supporting slide block 21 is slidably arranged in the cavity 20, the magnetic south poles and the magnetic north poles of the first magnet 22 and the second magnet 23 are opposite in direction, and the first magnet 22 and the second magnet 23 repel each other, so that the first lateral pressing plate 18 can be further pushed to move to compress and fix the rock sample.
Example 3
As shown in fig. 1-2, in the embodiment provided by the present invention, a drop hammer impact test confining pressure loading device includes a support base 1 and a drop hammer 6, a second support back plate 4 is fixedly installed on an upper surface of a rear side of the support base 1, a first support back plate 2 is fixedly installed on an upper surface of a right side of the support base 1, a fixed vertical plate 12 corresponding to the first support back plate 2 is installed on a left side of the support base 1, and a first lateral pressure assembly is installed on the fixed vertical plate 12; a second side pressing component corresponding to the second supporting back plate 4 is arranged on the front side of the supporting base 1; the supporting base 1 is also provided with a supporting base plate 3 through a hydraulic telescopic cylinder 9 in a supporting way, and the top parts of the first supporting back plate 2 and the second supporting back plate 4 are provided with supporting top plates 7 corresponding to the supporting base plate 3 in a vertically sliding way;
further, in the embodiment provided by the invention, the supporting top plate 7 is fixedly provided with the column 5, and the drop hammer 6 is positioned right above the column 5.
In the confining pressure loading device for the drop hammer impact test provided by the embodiment of the invention, the rock sample placed on the supporting base plate 3 is clamped and fixed through the first lateral pressure assembly and the second lateral pressure assembly, the height position of the supporting base plate 3 is adjusted through the hydraulic telescopic cylinder 9, then the column 5 is hammered through the drop hammer 6, the rock sample between the supporting base plate 3 and the supporting top plate 7 is subjected to the impact test through the conduction of the column 5, and the effectiveness of the test and the reliability of the test result are ensured.
As shown in fig. 1-3, in the embodiment provided by the present invention, the first lateral pressing assembly includes a fixed vertical plate 12 fixedly installed on the support base 1, a cavity 13 is formed in the fixed vertical plate 12, a support plug 14 is sealingly and slidably installed at an open end of the cavity 13, and a first lateral pressing plate 18 included in the first lateral pressing assembly is fixedly installed at an outer end of the support plug 14; the first lateral pressure assembly further comprises an air pump 16 used for blowing air into the cavity 13, an air outlet of the air pump 16 is connected with an air pipe 17, the other end of the air pipe 17 extends into the cavity 13, and the air pump 16 blows air into the cavity 13 to push the support plug 14 to move so that the first lateral pressure plate 18 compresses and fixes the rock sample;
further, a pressure gauge 15 for measuring the pressure in the cavity 13 is further disposed on the outer wall of the fixed vertical plate 12.
Further, as shown in fig. 1, fig. 3 and fig. 5, in an embodiment of the present invention, the first lateral pressing assembly further includes pressing columns 19 fixedly installed at four corners of the first lateral pressing plate 18, each of the pressing columns 19 is fixedly installed with a supporting slider 21, and each of the supporting sliders 21 is fixedly installed with a first magnet 22; the four corners of the fixed vertical plate 12 are provided with cavities 20 corresponding to the compression columns 19 one by one, a second magnet 23 is fixedly mounted in each cavity 20, the supporting slide block 21 is slidably arranged in the cavity 20, the magnetic south poles and the magnetic north poles of the first magnet 22 and the second magnet 23 are opposite in direction, and the first magnet 22 and the second magnet 23 repel each other, so that the first lateral pressing plate 18 can be further pushed to move to compress and fix the rock sample.
As shown in fig. 1 to 5, in the embodiment of the present invention, the second supporting backplate 4 is provided with a supporting through hole 8; the second lateral pressing assembly comprises a connecting screw rod 29 which is arranged in the supporting through hole 8 in a penetrating mode, the second lateral pressing assembly further comprises a second lateral pressing plate 10 and a supporting pressing plate 28, the second lateral pressing plate 10 is connected with the supporting pressing plate 28 in a supporting mode through at least two groups of supporting springs 32, a guide sliding rod 31 which is correspondingly matched with the supporting springs 32 is fixedly arranged on the second lateral pressing plate 10, the guide sliding rod 31 is arranged on the supporting pressing plate 28 in a penetrating and sliding mode, and an anti-falling threaded sleeve 11 is sleeved at the end portion of the guide sliding rod 31 in a threaded connection mode;
further, in the embodiment provided by the present invention, the other end of the connecting screw 29 is slidably disposed on the supporting pressure plate 28, and the two ends of the connecting screw 29 are both sleeved with the locking screw sleeves 30 in a threaded connection manner, so that the distance between the supporting pressure plate 28 and the second supporting backboard 4 can be adjusted, then the supporting pressure plate 28 is close to the second supporting backboard 4, and at this time, under the elastic supporting effect of the supporting spring 32, the second side pressure plate 10 can be pushed to move to compress and fix the side plate of the rock sample.
With reference to fig. 1 and 4, in the embodiment of the present invention, a supporting groove 25 is formed on one side of the supporting base plate 3, a connecting column 26 is slidably supported in the supporting groove 25 through a connecting spring 27, and a pressing block 24 is fixedly mounted on the other end of the connecting column 26.
According to the embodiment of the invention, air is blown into the cavity 13 through the air pump 16, so that the support plug 14 can be pushed to move to enable the first side pressure plate 18 to compress and fix the rock sample; the magnetic south pole and the magnetic north pole of the first magnet 22 and the second magnet 23 are opposite, the first magnet 22 and the second magnet 23 repel each other, and the first lateral pressing plate 18 can be further pushed to move to tightly press and fix the rock sample; the invention also makes the supporting pressure plate 28 close to the second supporting backboard 4, at this time, under the elastic supporting effect of the supporting spring 32, the second side pressure plate 10 can be pushed to move to press and fix the side plate of the rock sample.
In summary, in the confining pressure loading device for the drop hammer impact test provided by the embodiment of the invention, the first lateral pressure assembly and the second lateral pressure assembly clamp and fix the rock sample placed on the supporting base plate 3, the hydraulic telescopic cylinder 9 is used for adjusting the height position of the supporting base plate 3, then the drop hammer 6 is used for hammering the cylinder 5, and the rock sample between the supporting base plate 3 and the supporting top plate 7 is subjected to the impact test through conduction of the cylinder 5, so that the effectiveness of the test and the reliability of the test result are ensured.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
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 (8)
1. A confining pressure loading device for a drop hammer impact test is characterized by comprising a supporting base (1) and a drop hammer (6);
a second supporting back plate (4) is fixedly mounted on the upper surface of the rear side of the supporting base (1), a first supporting back plate (2) is fixedly arranged on the upper surface of the right side of the supporting base (1), a fixed vertical plate (12) corresponding to the first supporting back plate (2) is arranged on the left side of the supporting base (1), and a first lateral pressing assembly is arranged on the fixed vertical plate (12);
a second side pressing component corresponding to the second supporting back plate (4) is arranged on the front side of the supporting base (1); a support base plate (3) is supported and arranged on the support base (1) through a hydraulic telescopic cylinder (9), and a support top plate (7) corresponding to the support base plate (3) is arranged on the tops of the first support back plate (2) and the second support back plate (4) in a vertically sliding mode;
a cylinder (5) is fixedly arranged on the supporting top plate (7), and the drop hammer (6) is positioned right above the cylinder (5);
the first lateral pressing assembly comprises a fixed vertical plate (12) fixedly mounted on the support base (1), a cavity (13) is formed in the fixed vertical plate (12), a support plug (14) is arranged at the open end of the cavity (13) in a sealing and sliding manner, and a first lateral pressing plate (18) of the first lateral pressing assembly is fixedly mounted at the outer end of the support plug (14); the first side press assembly further comprises an air pump (16) for blowing air into the cavity (13).
2. The drop hammer impact test confining pressure loading device as claimed in claim 1, wherein an air delivery pipe (17) is connected to an air outlet of the air pump (16), and the other end of the air delivery pipe (17) extends into the cavity (13).
3. The drop hammer impact test confining pressure loading device as claimed in claim 2, wherein a pressure gauge (15) for measuring the pressure in the cavity (13) is further arranged on the outer wall of the fixed vertical plate (12).
4. The drop hammer impact test confining pressure loading device according to any one of claims 1-3, wherein the first lateral pressing assembly further comprises pressing columns (19) fixedly mounted at four corners of the first lateral pressing plate (18), each pressing column (19) is fixedly mounted with a supporting slide block (21), and each supporting slide block (21) is fixedly provided with a first magnet (22).
5. The drop hammer impact test confining pressure loading device according to claim 4, wherein cavities (20) corresponding to the compression columns (19) in a one-to-one manner are formed in four corners of the fixed vertical plate (12), a second magnet (23) is fixedly mounted in each cavity (20), the supporting slide block (21) is slidably arranged in the cavity (20), and the directions of the magnetic south pole and the magnetic north pole of the first magnet (22) and the second magnet (23) are opposite.
6. The drop hammer impact test confining pressure loading device as claimed in claim 5, wherein a supporting through hole (8) is formed in the second supporting back plate (4); the second side presses the subassembly including running through and locates support connecting screw rod (29) in through-hole (8), the second side presses the subassembly still includes second side clamp plate (10) and support clamp plate (28), second side clamp plate (10) with support and support through at least two sets of supporting spring (32) between clamp plate (28) and support and connect, still fixed be provided with on second side clamp plate (10) with supporting spring (32) corresponding complex direction slide bar (31), direction slide bar (31) run through to slide and locate on support clamp plate (28), just the tip of direction slide bar (31) is equipped with anticreep swivel nut (11) through threaded connection mode cover.
7. The drop hammer impact test confining pressure loading device as claimed in claim 6, wherein the other end of the connecting screw rod (29) is slidably arranged on the supporting pressure plate (28) in a penetrating manner, and both ends of the connecting screw rod (29) are sleeved with locking screw sleeves (30) in a threaded connection manner.
8. The drop hammer impact test confining pressure loading device according to claim 6, wherein a supporting groove (25) is formed in one side of the supporting base plate (3), a connecting column (26) is arranged in the supporting groove (25) in a supporting and sliding mode through a connecting spring (27), and a pressing block (24) is fixedly mounted at the other end of the connecting column (26).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010313280.7A CN111398025A (en) | 2020-04-20 | 2020-04-20 | Confining pressure loading device for drop hammer impact test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010313280.7A CN111398025A (en) | 2020-04-20 | 2020-04-20 | Confining pressure loading device for drop hammer impact test |
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| CN111398025A true CN111398025A (en) | 2020-07-10 |
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Application publication date: 20200710 |