CN215857895U - Anti stability testing arrangement that takes off of visor block - Google Patents
Anti stability testing arrangement that takes off of visor block Download PDFInfo
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- CN215857895U CN215857895U CN202121412207.1U CN202121412207U CN215857895U CN 215857895 U CN215857895 U CN 215857895U CN 202121412207 U CN202121412207 U CN 202121412207U CN 215857895 U CN215857895 U CN 215857895U
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Abstract
A facing block anti-falling stability testing device comprises a lifting appliance, a dynamometer, a force transmission part, a force application mechanism and a block instability displacement measuring mechanism, wherein the lower end of the lifting appliance is connected with a facing block, and the upper end of the lifting appliance is connected with the lower end of the dynamometer; the upper end of the dynamometer is connected with the lower end of the force transmission component; the upper end of the force transmission component is connected with the force application mechanism; the block destabilization displacement measuring mechanism is arranged on the upper surface of the peripheral surface protection structure of the unaffected surface protection block; the force application mechanism applies a pulling force to the force transmission part, so that the lower end point of the dynamometer forms an extension line towards the upper end point of the dynamometer and the direction of the force transmission part at the upper end of the dynamometer, the extension line is consistent with the direction of the jumping or lifting instability of the upward surface of the facing block body, and an eccentric distance exists between the extension line and the gravity center of the facing block body. The utility model has ingenious structure and is suitable for testing the maximum external force borne by the regular or irregular armor block before instability.
Description
Technical Field
The utility model relates to a device for testing the anti-falling stability of a facing block, which is suitable for the field of anti-falling stability of the facing block of hydraulic engineering, harbor engineering and maritime engineering and the field of indoor tests, and is mainly applied to the detection of the anti-falling stability of the facing block in coastal, inland river and inland lake areas and the test of the maximum external force applied to the facing block when jumping-off and lifting-off instability occur.
Background
In hydraulic buildings such as hydraulic engineering, harbor engineering, maritime engineering and the like, the surface protection block structure plays a role in wave dissipation and protection. However, under the impact of external force such as waves, the facing block body has the possibility of instability such as jumping, rolling, lifting, translation and the like, thereby affecting the operation safety of the project. Therefore, people are concerned about the anti-falling stability performance of the facing block after the masonry is completed, and want to know the maximum external force which can be borne by the facing block before the facing block jumps, lifts and falls and is unstable.
At present, the common indoor wave section model test of the facing block structure only simulates the integral instability condition of the facing block under the action of waves and different tide levels through an indoor simulation test, cannot detect the external force applied when the facing block is unstable, and has the disadvantages of complicated test procedures, long test period and high cost; the utility model discloses a utility model patent "a armour block anti-jump takes off bearing capacity testing arrangement" that has disclosed, there is the shortcoming that is difficult to detect the large-scale armour block that is located engineering actual scene, irregularity.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides the surface protection block anti-falling stability testing device which is relatively simple in structure and high in applicability, is suitable for regular surface protection blocks or irregular large surface protection blocks, and is effectively applied to the actual field of engineering.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a facing block anti-falling stability testing device comprises a lifting appliance, a dynamometer, a force transmission part, a force application mechanism and a block destabilization displacement measuring mechanism for measuring the displacement of a facing block in a destabilization process, wherein a plane formed by the upper surface of the facing block and the upper surface of an adjacent facing block is an inclined plane or a horizontal plane; the lower end of the lifting appliance is connected with the face protection block body, and the upper end of the lifting appliance is connected with the lower end of the dynamometer; the upper end of the dynamometer is connected with the lower end of the force transmission component; the upper end of the force transmission component is connected with the force application mechanism; the block instability displacement measuring mechanism is arranged on the upper surface of the peripheral face protection structure of the face protection block body which is not affected, the force application mechanism applies pulling force to the force transmission part, so that the lower end point of the dynamometer forms an extension line towards the upper end point of the dynamometer and the force transmission part at the upper end of the dynamometer, the extension line is consistent with the direction of the upward surface jumping-off or lifting-off instability of the face protection block body, and an eccentric distance exists between the extension line and the gravity center of the face protection block body.
In the utility model, in the scheme that the lower end of the lifting appliance is connected with the facing block body, the lifting appliance has the function of clamping the block body or the facing block body is provided with a part for directly lifting the lifting appliance, the lower end of the lifting appliance is usually connected with the side surface of the facing block body, and of course, the lower end of the lifting appliance can also be the bottom surface or the upper surface of the facing block body.
Further, the eccentricity is L, and the value of L is 0-2/3 times of the longest side length of the facing block. Due to the existence of the peripheral gap of the facing block, the friction force and clamping force applied to the facing block by the peripheral block are not uniformly applied to the block or the periphery of the block like the gravity applied by the earth in the instability process, so that theoretically, the instability direction is difficult to just penetrate through the gravity center of the block, L is not 0 in general, when the facing block and the peripheral block are regular, the friction force and clamping force applied to the block by the peripheral block are uniformly distributed, and the facing block is horizontally arranged or is approximately horizontally arranged, L is possibly 0, and at the moment, the extension line penetrates through the gravity center of the facing block. Of course, when the facing blocks and the peripheral blocks are both nearly regular and the facing blocks are placed nearly horizontally, L may also be approximately 0.
Furthermore, the included angle between the direction of the extension line and the upper surface of the surface protection block body is alpha, and the value of alpha is 45-135 degrees. When the alpha is 90 degrees, the direction of the extension line is vertical to the upper surface of the surface protection block body; perpendicular or nearly perpendicular to the upper surface of the facing structure where the facing blocks are located is preferred.
Furthermore, the surface protection block anti-falling stability testing device further comprises an anchor clamp assembly, the lower end of the anchor clamp assembly is connected with the surface protection block, and the upper end of the anchor clamp assembly is connected with the lower end of the lifting appliance.
Preferably, the lower end of the anchor tong structure is anchored to the facing block.
The anchor clamp assembly is composed of a fixing structure and an adjusting structure, wherein the fixing structure is anchored, clamped or bound on the surface protection block, the adjusting structure is used for adjusting the position of a stress point, the lower end of the fixing structure is connected with the surface protection block, the upper end of the fixing structure is connected with the lower end of the adjusting structure, and the upper end of the adjusting structure is connected with the lower end of the lifting appliance.
Still further, the fixed structure is a plurality of anchor bars embedded in the facing block, expansion screws or other rigid materials, or is bound by a plurality of steel wire ropes which are not embedded in the facing block, a steel plate clamp and a steel claw-shaped clamp.
Still further, the adjusting structure adopts a sling chain, a sling, a steel wire rope or other rigid and non-telescopic materials with adjustable length.
When the position of the stress point does not need to be adjusted by using the adjusting structure, the adjusting structure in the anchor clamp assembly can be omitted.
And furthermore, the lifting appliance adopts a lifting hook and a lifting clamp with chains or steel wire ropes.
Still further, the anchor tong assembly may be omitted when the facing block may be directly embedded using a spreader.
And furthermore, the block instability displacement measuring mechanism is a displacement meter, the fixed end of the displacement meter is fixed on a facing structure which is not influenced on the periphery of the facing block, and a movable measuring head of the displacement meter is arranged on the upper surface of the facing block. The block instability displacement measuring mechanism can also adopt an infrared measuring instrument, a scale, a tape measure and other tools capable of measuring the displacement of the block instability in the process, or a reference object such as a rope line for limiting the instability height. When the precision requirements on the displacement and the limited instability height are not high, the estimation can be carried out by adopting a visual inspection method. The method for judging the critical state when the facing block is unstable can adopt one of the following methods: 1) when the measured displacement of the armor block is larger than a limit value, 2) when the measured value of the dynamometer reaches a peak value, 3) adopting the scheme 1) and the method 2) for comprehensive judgment.
Still further, the dynamometer can adopt a hanging scale, a push-pull dynamometer and a pressure gauge.
The force transmission component is made of non-extensible, non-breakable and light-weight materials. The force transmission component is a force transmission line or a force transmission rod, and preferably, the force transmission component is a steel wire rope.
The force application mechanism adopts a direct force application mode, a jack auxiliary force application mode, a winch auxiliary force application mode, a crane auxiliary force application mode or other force application modes.
The surface protection block bodies comprise block stones in surface protection structures such as a tidying block stone, a concrete pouring block stone, a concrete semi-pouring block stone, a concrete ecological pouring block stone, a mortar block stone and the like, and also comprise surface protection blocks such as concrete square blocks, four-foot hollow blocks, twisted Chinese character 'wang' blocks, twisted I-shaped blocks, nut blocks, fence plates and the like which are prefabricated by concrete or other cementing materials.
The utility model has the following beneficial effects: the structure is relatively simple, the operation is convenient and fast, the realization is easy, and the applicability is high; the method is suitable for regular surface protection blocks, irregular large-scale surface protection blocks, indoor tests and actual field tests of projects.
Drawings
Fig. 1 is a structural view of a first test device for the stability against falling of a facing block.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a structural view of a second test device for the stability against falling of the facing block.
Fig. 4 is a structural view of a third facing block destabilization resistance test device.
Figure 5 is a block diagram of a first type of anchor clamp assembly.
Figure 6 is a block diagram of a second type of anchor clamp assembly.
Figure 7 is a block diagram of a third type of anchorage assembly.
Figure 8 is a block diagram of a fourth type of anchorage assembly.
Figure 9 is a block diagram of a fifth type of anchor clamp assembly.
Figure 10 is a block diagram of a sixth type of anchor clamp assembly.
Figure 11 is a block diagram of a seventh type of anchor clamp assembly.
Figure 12 is a block diagram of an eighth type of anchor clamp assembly.
Figure 13 is a block diagram of a ninth type of anchor clamp assembly.
The device comprises a protective surface structure 1, a measured block 2, a fixed structure 3, a displacement meter 4, an adjusting structure 5, a lifting appliance 6, a load cell 7, a force transmission component 8, a force application mechanism 9, a gravity center 10, an angle alpha 11 and a distance L12.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 13, a facing block anti-destabilization testing device comprises a lifting appliance 6, a force gauge 7, a force transmission part 8, a force application mechanism 9 and a block destabilization displacement measurement mechanism for measuring the displacement of a facing block in a destabilization process, wherein a surface formed by the upper surface of the facing block 2 and the upper surface of an adjacent facing block is an inclined surface or a horizontal plane; the lower end of the lifting appliance 6 is connected with the facing block 2, and the upper end of the lifting appliance 6 is connected with the lower end of the dynamometer 7; the upper end of the dynamometer 7 is connected with the lower end of the force transmission component 8; the upper end of the force transmission component 8 is connected with a force application mechanism 9; the block instability displacement measuring mechanism is arranged on the upper surface of the surface protection structure on the periphery of the surface protection block which is not affected; the force application mechanism 9 applies a pulling force to the force transmission component 8, so that the lower end point of the dynamometer 7 forms an extension line towards the upper end point of the dynamometer 7 and the force transmission component 8 at the upper end of the dynamometer 7, the extension line is consistent with the jumping or lifting instability direction of the upward surface of the facing block 22, and an eccentric distance exists between the extension line and the gravity center 10 of the facing block 2.
In the present invention, in the scheme of connecting the lower end of the spreader to the facing block, the spreader has a function of a block clamping body or the facing block has a portion for directly lifting the spreader, and the lower end of the spreader is usually connected to a side surface of the facing block, but may be a bottom surface or an upper surface of the facing block, as shown in fig. 4.
Further, the eccentricity 12 is L, and the value of L is 0-2/3 times of the longest side length of the facing block body 2. Due to the existence of the peripheral gap of the facing block 2, the friction force and clamping force given by the peripheral block to the block are not uniformly applied to the block or the periphery of the block like the gravity applied by the earth in the instability, so that theoretically, the instability direction is difficult to just pass through the gravity center of the block, and L is not 0 in the normal condition, when the facing block 2 and the peripheral block are regular, the friction force and clamping force given by the peripheral block to the block are uniformly distributed, and the facing block 2 is horizontally placed, L is possibly 0, and at the moment, the extension line passes through the gravity center of the facing block 2. Of course, when the facing blocks and the peripheral blocks are both nearly regular, and the facing blocks are placed horizontally or nearly horizontally, L may also be approximately 0.
Still further, the included angle 11 between the direction of the extension line and the upper surface of the face protection block body 2 is alpha, and the value of alpha is 45-135 degrees. When the angle alpha is 90 degrees, the direction of the extension line is vertical to the upper surface of the surface protection block body 2; perpendicular or nearly perpendicular to the upper surface of the facing structure in which the facing blocks 2 are located is preferred.
Furthermore, the surface protection block anti-falling stability testing device further comprises an anchor clamp assembly, the lower end of the anchor clamp assembly is connected with the surface protection block 2, and the upper end of the anchor clamp assembly is connected with the lower end of the lifting appliance 6.
Preferably, the lower end of the anchor tong structure is anchored to the facing block 2.
The anchor clamp assembly is composed of a fixing structure 3 anchored, clamped or bound on a face protection block body and an adjusting structure 5 used for adjusting the position of a stress point, the lower end of the fixing structure 3 is connected with the face protection block body 2, the upper end of the fixing structure 3 is connected with the lower end of the adjusting structure 5, and the upper end of the adjusting structure 5 is connected with the lower end of a lifting appliance 6.
Still further, the fixed structure 3 is a plurality of anchor bars, expansion screws or other rigid materials embedded in the facing block, or is bound by a plurality of steel wire ropes, steel plate clamps and steel claw-shaped clamps which are not embedded in the facing block.
Still further, the adjusting structure 5 is made of a sling chain, sling rope, steel wire rope or other rigid and non-telescopic material with adjustable length.
When the position of the stress point is not required to be adjusted by the adjusting structure 3, the adjusting structure 3 in the anchor clamp assembly can be omitted.
Figure 5 is a block diagram of a first type of anchor clamp assembly. The structure adopts side anchoring and can adjust the eccentricity. The anchor clamp assembly is suitable for easy anchoring of the side face of a measured block and needs to adjust the eccentric distance L.
Figure 6 is a block diagram of a second type of anchor clamp assembly. The structure adopts upper surface anchoring, and the eccentricity can be adjusted. The anchor clamp assembly is suitable for easy anchoring of the upper surface of a measured block and needs to adjust the eccentric distance L.
Figure 7 is a block diagram of a third type of anchorage assembly. The structure adopts bottom clamping and can adjust the eccentricity. This anchor clamps subassembly is applicable to and is surveyed the difficult anchor that adopts of block, and the difficult clamping that adopts of side, but the accessible bottom clamping is fixed, need adjust eccentric distance L simultaneously.
Figure 8 is a block diagram of a fourth type of anchorage assembly. The structure adopts surface binding, and the eccentricity can be adjusted. The anchor clamp assembly is suitable for anchoring a detected block body difficultly, can be fixed by adopting a binding structure, and needs to adjust the eccentric distance L.
Figure 9 is a block diagram of a fifth type of anchor clamp assembly. The structure adopts side clamping and can adjust the eccentricity. The anchor clamp assembly is suitable for anchoring a detected block body difficultly, and the side surface of the anchor clamp assembly can adopt a clamp and needs to adjust the eccentric distance L.
Figure 10 is a block diagram of a sixth type of anchor clamp assembly. The structure combines side small-range anchoring and side clamping, and the eccentricity can be adjusted. The anchor clamp assembly is suitable for anchoring the side face of a detected block only in a small range, and adopts side clamping, and meanwhile, the eccentric distance L needs to be adjusted.
Figure 11 is a block diagram of a seventh type of anchor clamp assembly. The structure is fixed by side clamps, and the eccentricity can be adjusted. The anchor clamp assembly is suitable for anchoring a detected block body difficultly, can be fixed in a side clamp mode, and needs to adjust the eccentric distance L.
Figure 12 is a block diagram of an eighth type of anchor clamp assembly. The structure is fixed by side clamps, and the eccentricity cannot be adjusted. The anchor clamp assembly is suitable for anchoring a detected block body difficultly, can be fixed in a side clamp mode, and does not need to adjust the eccentric distance L.
The lifting appliance 6 adopts a lifting hook and a lifting clamp with chains or steel wire ropes. When the face block can be directly embedded and fixed by adopting the lifting appliance 6, the anchor clamp component can be omitted.
The block instability displacement measuring mechanism can be a displacement meter 4, the fixed end of the displacement meter 4 is fixed on a protective surface structure which is not affected on the periphery of the protective surface block, and a movable measuring head of the displacement meter 4 is arranged on the upper surface of the protective surface block 2. The block instability displacement measuring mechanism can also adopt an infrared measuring instrument, a scale, a tape measure and other tools capable of measuring the displacement of the block instability in the process, or a reference object such as a rope line for limiting the instability height. When the precision requirements on the displacement and the limited instability height are not high, the estimation can be carried out by adopting a visual inspection method. The method for judging the critical state when the facing block is unstable can adopt one of the following methods: 1) When the measured displacement of the armor block is larger than a limit value, 2) when the measured value of the dynamometer reaches a peak value, 3) adopting the scheme 1) and the method 2) for comprehensive judgment.
The dynamometer 7 can adopt a hanging scale, a push-pull dynamometer and a pressure gauge. The force transfer member 8 is of a non-extensible, non-breakable and light weight material. The force transmission component is a force transmission line or a force transmission rod, and preferably, the force transmission component is a steel wire rope. The force application mechanism 9 adopts a direct force application mode, a jack auxiliary force application mode, a winch auxiliary force application mode, a crane auxiliary force application mode or other force application modes.
The face protection block body 2 comprises block stones in face protection structures such as a tidying block stone, a concrete pouring block stone, a concrete semi-pouring block stone, a concrete ecological pouring block stone, a mortar block stone and the like, and also comprises face protection blocks which are prefabricated by concrete or other materials such as a concrete square block, a four-foot hollow block body, a twisted Chinese character 'wang' block body, a twisted I-shaped block body, a nut block body, a fence plate and the like.
The test method realized by the facing block anti-falling stability test device comprises the following steps:
s1 connects the spreader 6, load cell 7, force transfer member 8 and force application mechanism 9: the lower end of the lifting appliance 6 is connected with the facing block body 2, and the upper end of the lifting appliance 6 is connected with the lower end of the dynamometer 7; the upper end of the dynamometer 7 is connected with the lower end of the force transmission component 8; the upper end of the force transmission component 8 is connected with a force application mechanism 9; mounting a block destabilization displacement measuring mechanism on the upper surface of the peripheral surface protection structure of the surface protection block 2 which is not affected;
s2, adjusting and fixing the connecting line of the dynamometer 7, the force transmission component 8 and the force application mechanism 9 to be consistent with the jumping or lifting instability direction of the upward surface of the facing block 2, wherein an eccentric distance exists between the extension line and the gravity center of the facing block 2;
s3, reading initial values of the block instability displacement measuring mechanism and the dynamometer 7;
s4, the force application mechanism 9 applies pulling force to the force transmission component 8, and the loading is stopped when the anti-destabilization displacement of the surface protection block body 2 is larger than a limit value or the reading of the dynamometer reaches the peak value;
s5 reads data of the mass instability displacement measuring mechanism and the load cell 7.
Further, in step S2, a camera is installed on the upper surface of the facing block around the facing block, the installation height is the same as the displacement instability limit value, and the camera orientation can ensure that the camera can cover the entire instability process of the facing block stone, the dynamometer reading, and the block instability measurement mechanism reading.
Still further, in step S1, the block destabilizing displacement measuring mechanism may be a displacement meter 4, and the displacement meter 4 is fixed on an upper surface of the facing block on the periphery of the facing block that is not affected. The block instability displacement measuring mechanism can also adopt an infrared measuring instrument, a scale, a tape measure and other tools capable of measuring the displacement of the block instability in the process, or a reference object such as a rope line for limiting the instability height. When the precision requirements on the displacement and the limited instability height are not high, the estimation can be carried out by adopting a visual inspection method. The method for judging the critical state when the facing block is unstable can adopt one of the following methods: 1) when the measured displacement of the armor block is larger than the limit value, 2) when the measured value of the dynamometer reaches the peak value, 3) comprehensive judgment is carried out by adopting a scheme I and a method II.
Further, in step S1, an anchor clamp assembly is installed and adjusted, the lower end of the anchor clamp assembly is connected to the facing block 2, and the upper end of the anchor clamp assembly is connected to the lower end of the spreader 6.
Preferably, the lower end of the anchor tong structure is anchored to the facing block 2.
The anchor clamp assembly is composed of a fixing structure 3 anchored, clamped or bound on a face protection block body and an adjusting structure 5 used for adjusting the position of a stress point, the lower end of the fixing structure 3 is connected with the face protection block body 2, the upper end of the fixing structure 3 is connected with the lower end of the adjusting structure 5, and the upper end of the adjusting structure 5 is connected with the lower end of a lifting appliance 6.
Still further, the fixed structure 3 is a plurality of anchor bars, expansion screws or other rigid materials embedded in the facing block, or is bound by a plurality of steel wire ropes, steel plate clamps and steel claw-shaped clamps which are not embedded in the facing block.
Still further, the adjusting structure 5 is made of a sling chain, sling rope, steel wire rope or other rigid and non-telescopic material with adjustable length.
When the position of the stress point is not required to be adjusted by the adjusting structure 3, the adjusting structure 3 in the anchor clamp assembly can be omitted.
The embodiments described in this specification are merely examples of implementations of the inventive concepts, which are intended for illustrative purposes only. The scope of the present invention should not be construed as being limited to the particular forms set forth in the examples, but rather as being defined by the claims and the equivalents thereof which can occur to those skilled in the art upon consideration of the present inventive concept.
Claims (10)
1. The utility model provides a face guard block body is anti takes off stable testing arrangement which characterized in that: the device comprises a lifting appliance, a dynamometer, a force transmission part, a force application mechanism and a block destabilization displacement measurement mechanism for measuring the displacement of a surface protection block in a destabilization process, wherein the surface formed by the upper surface of the surface protection block and the upper surface of the adjacent surface protection block is an inclined plane or a horizontal plane; the lower end of the lifting appliance is connected with the face protection block body, and the upper end of the lifting appliance is connected with the lower end of the dynamometer; the upper end of the dynamometer is connected with the lower end of the force transmission component; the upper end of the force transmission component is connected with the force application mechanism; the block instability displacement measuring mechanism is arranged on the upper surface of the surface protection structure on the periphery of the surface protection block which is not affected; the force application mechanism applies a pulling force to the force transmission part, so that the lower end point of the dynamometer forms an extension line towards the upper end point of the dynamometer and the direction of the force transmission part at the upper end of the dynamometer, the extension line is consistent with the direction of the jumping-off or lifting-off instability of the upward surface of the facing block body, and an eccentric distance exists between the extension line and the gravity center of the facing block body.
2. A facing block destabilisation resistance test apparatus according to claim 1, wherein: the eccentricity is L, and the value of L is 0-2/3 times of the longest side length of the facing block.
3. A facing block destabilisation resistance test apparatus according to claim 1 or 2, wherein: the included angle between the direction of the extension line and the upper surface of the surface protection block body is alpha, and the value of alpha is 45-135 degrees.
4. A facing block destabilisation resistance test apparatus according to claim 1 or 2, wherein: the testing device for the anti-falling stability of the facing block further comprises an anchor clamp assembly, the lower end of the anchor clamp assembly is connected with the facing block, and the upper end of the anchor clamp assembly is connected with the lower end of the lifting appliance.
5. A facing block destabilisation resistance test apparatus according to claim 4, wherein: the anchor clamp assembly is composed of a fixing structure and an adjusting structure, wherein the fixing structure is anchored, clamped or bound on the surface protection block, the adjusting structure is used for adjusting the position of a stress point, the lower end of the fixing structure is connected with the surface protection block, the upper end of the fixing structure is connected with the lower end of the adjusting structure, and the upper end of the adjusting structure is connected with the lower end of the lifting appliance.
6. A facing block destabilisation resistance test apparatus according to claim 5, wherein: the fixing structure is a plurality of anchor bars or expansion screws embedded into the facing block body, or a plurality of steel wire ropes, steel plate clamps or steel claw-shaped clamps which are not embedded into the facing block body are adopted for binding.
7. A facing block destabilisation resistance test apparatus according to claim 5, wherein: the adjusting structure adopts a lifting chain, a sling or a steel wire rope with adjustable length.
8. A facing block destabilisation resistance test apparatus according to claim 5, wherein: the hanger is a lifting hook and a lifting clamp with chains or steel wire ropes.
9. A facing block destabilisation resistance test apparatus according to claim 1 or 2, wherein: the block instability displacement measuring mechanism is a displacement meter, the fixed end of the displacement meter is fixed on a protective surface structure which is not affected on the periphery of the protective surface block, and a movable measuring head of the displacement meter is arranged on the upper surface of the protective surface block.
10. A facing block destabilisation resistance test apparatus according to claim 1 or 2, wherein: the force transmission component is a force transmission line or a force transmission rod.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121412207.1U CN215857895U (en) | 2021-06-24 | 2021-06-24 | Anti stability testing arrangement that takes off of visor block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121412207.1U CN215857895U (en) | 2021-06-24 | 2021-06-24 | Anti stability testing arrangement that takes off of visor block |
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| CN215857895U true CN215857895U (en) | 2022-02-18 |
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- 2021-06-24 CN CN202121412207.1U patent/CN215857895U/en active Active
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