CN211235307U - Double-shaft pressure testing machine - Google Patents
Double-shaft pressure testing machine Download PDFInfo
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- CN211235307U CN211235307U CN201922339556.4U CN201922339556U CN211235307U CN 211235307 U CN211235307 U CN 211235307U CN 201922339556 U CN201922339556 U CN 201922339556U CN 211235307 U CN211235307 U CN 211235307U
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Abstract
The utility model relates to a biax compression testing machine belongs to the technical field of rock mechanics characteristic test, and it includes the body and sets up the loading device on the body, but loading device includes the bearing mechanism of automatic adjustment and the extrusion mechanism of applying the extrusion force to bearing mechanism under the external force extrusion, extrusion mechanism fixed connection is on the body, bearing mechanism includes the first backup pad of sliding connection on the body, the first universal joint of fixedly connected with in the first backup pad, the first universal joint other end orientation extrusion mechanism. The utility model discloses have the automatic adjustment and bear the mechanism position, reduce because of bearing the effect that mechanism offset influences the data accuracy.
Description
Technical Field
The utility model belongs to the technical field of the technique of rock mechanics characteristic test and specifically relates to a biax compression testing machine is related to.
Background
At present, during mining, disasters such as slope landslide and roof collapse caused by fault activation not only affect daily mining activities, but also often seriously threaten the safety of mining personnel and mining machinery. The factors that induce fault activation are many, and the blast stress wave, which is the most common external dynamic load, has a significant effect on the activation of the fault layer during the mining process. In the deep mining process, the fault in the rock mass is in a long-term creep state and is disturbed by frequent blasting impact in blasting engineering, the rock mass around the fault can generate dynamic fatigue damage, and the fault can be activated along with the time, so that the shear creep experiment after the dynamic disturbance has great significance for exploring the fault slippage induced by the blasting stress wave.
The traditional Chinese invention patent with publication number CN109580393A, which is published in 2019, 4, 5 and discloses a biaxial disturbance rock shear creep testing machine and a testing method. The loading system comprises a box body, the box body comprises a top plate, a bottom plate and two side plates, a vertical positioning bolt is arranged on the top plate, an upper ejector block is fixedly connected to one end, close to the bottom plate, of the vertical positioning bolt, a first hydraulic cylinder is fixedly connected to the bottom plate, a first hydraulic cylinder body is fixedly connected to the bottom plate, a first sensor is fixedly connected to a first hydraulic cylinder piston rod, a lower top plate is fixedly connected to one side, close to the upper top plate, of the first sensor, a first hydraulic cylinder piston rod extends towards the upper top plate, a positioning chute is formed in one side plate along the vertical direction, a horizontal positioning bolt is horizontally arranged on the side plate and is slidably connected into the positioning chute, a first side top plate is fixedly connected to one end of the horizontal positioning bolt, a second hydraulic cylinder is arranged on the other side plate, a hydraulic cylinder body, one side of the second sensor, which is far away from the second hydraulic cylinder, is fixedly connected with a second side top plate. Placing the cubic rock sample to be measured on the roof down, adjust vertical positioning bolt, make the roof contradict in the rock sample, adjustment hydraulic cylinder two and horizontal positioning bolt position, make the roof of inclining one with the roof of inclining two be in same horizontal plane with the rock sample, adjustment horizontal positioning bolt makes roof of inclining one contradict in the rock sample with roof of inclining two, hydraulic cylinder piston rod stretches out, two piston rods of hydraulic cylinder stretch out, the two extrudees the rock sample, sensor one and sensor two with data transmission, thereby learn the stress numerical value of rock sample.
The above prior art solutions have the following drawbacks: when the rock sample receives the extrusion of hydraulic cylinder, the degree that the creep takes place in the rock is different, and each part of rock sample is different at extrusion in-process deformation, goes up roof and side roof and places for the level, through many times extrusion test back, thereby goes up roof and side roof and receives the extrusion to lead to the position to take place the skew to influence the data accuracy that detects.
SUMMERY OF THE UTILITY MODEL
The not enough to prior art exists, the utility model aims at providing a biax compression testing machine. When the rock sample is extruded, the loading device can automatically adjust the position, and the influence on the accuracy of the detection data is reduced.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a biax compression testing machine, includes the body and sets up the loading device on the body, but loading device includes the mechanism of bearing that can automatically regulated under the extrusion of external force and the extrusion mechanism of applying the extrusion force to bearing the mechanism, extrusion mechanism fixed connection is on the body, bearing the mechanism and including sliding connection in the first backup pad on the body, the first universal joint of fixedly connected with on the first backup pad, the first universal joint other end is towards extrusion mechanism.
By adopting the technical scheme, the rock sample to be detected is placed on the bearing mechanism, the rock sample is extruded by the extrusion mechanism, and when the bearing mechanism is extruded, the bearing mechanism automatically adjusts the position under the action of the first universal joint, so that the influence on the accuracy of the detection data is reduced.
The present invention may be further configured in a preferred embodiment as: the bearing mechanism comprises a first support rod sleeved outside the first universal joint, and the first support rod is made of rubber.
Through adopting above-mentioned technical scheme, when the third stripper plate receives the extrusion and takes place the skew, because of rubber has elasticity, after the extrusion force disappears, first bracing piece plays supplementary reset effect to the third stripper plate, makes the third stripper plate get back to the horizontality.
The present invention may be further configured in a preferred embodiment as: the first supporting plate is fixedly connected with a third supporting plate towards one side of the extrusion mechanism, a first through hole is formed in the third supporting plate, one end of the first universal joint penetrates through the first through hole, the diameter of the first through hole is the same as that of the cylindrical part of the first universal joint, and the other end of the first universal joint is fixedly connected with a first extrusion plate.
Through adopting above-mentioned technical scheme, the third bracing piece strengthens the stability of being connected between first universal joint and the first backup pad.
The present invention may be further configured in a preferred embodiment as: the extrusion mechanism comprises a first hydraulic cylinder fixedly connected to the body, a piston rod of the first hydraulic cylinder stretches along the vertical direction, a first pressure sensor is fixedly connected to the piston rod of the first hydraulic cylinder, and the first pressure sensor deviates from a third extrusion plate fixedly connected to one end of the first hydraulic cylinder.
Through adopting above-mentioned technical scheme, first pneumatic cylinder piston rod stretches out from the cylinder body and promotes first stripper plate and contradict in the rock sample, and first pressure sensor utilizes first pneumatic cylinder to provide the extrusion force with ascending pressure data transmission of vertical side to the computer end, and job stabilization is reliable.
The present invention may be further configured in a preferred embodiment as: the bearing mechanism comprises a second supporting plate and a second universal joint, the second supporting plate is fixedly connected to the body, a second through hole is formed in the second supporting plate, one end of the second universal joint penetrates through the second through hole, the diameter of the second through hole is the same as that of the cylindrical portion of the second universal joint, and the second universal joint is fixedly connected with a second extrusion plate towards one end of the extrusion mechanism.
Through adopting above-mentioned technical scheme, the second backup pad strengthens the stability of being connected between second universal joint and the second curb plate.
The present invention may be further configured in a preferred embodiment as: the second universal joint overcoat is equipped with the second bracing piece, the second bracing piece is the rubber material.
Through adopting above-mentioned technical scheme, when the fourth stripper plate receives the extrusion and when taking place the skew, have elasticity because of rubber, after the extrusion force disappears, the second bracing piece plays supplementary reset action to the fourth stripper plate, makes the fourth stripper plate get back to the horizontality.
The present invention may be further configured in a preferred embodiment as: the extrusion mechanism comprises a second hydraulic cylinder fixedly connected to the body, a piston rod of the second hydraulic cylinder stretches along the horizontal direction, a second pressure sensor is fixedly connected to the piston rod of the second hydraulic cylinder, and the second pressure sensor deviates from a fourth extrusion plate fixedly connected to one end of the second hydraulic cylinder.
Through adopting above-mentioned technical scheme, the second hydraulic cylinder piston rod stretches out from the cylinder body and promotes the second stripper plate and contradict in the rock sample, and second pressure sensor transmits the ascending pressure data of horizontal direction to the computer end, utilizes the second hydraulic cylinder to provide the extrusion force, and job stabilization is reliable.
The present invention may be further configured in a preferred embodiment as: the body is square, the body is including fixing at subaerial bottom plate, first curb plate of vertical fixedly connected with and second curb plate on the bottom plate, first curb plate and second curb plate back of the body from bottom plate one end fixedly connected with roof, the roof is parallel arrangement with the bottom plate, first pneumatic cylinder fixed connection is on the roof, second pneumatic cylinder fixed connection is on first curb plate, second universal joint fixed connection is on the second curb plate.
Through adopting above-mentioned technical scheme, the cooperation of first pneumatic cylinder and second pneumatic cylinder can be followed two directions and extruded the rock sample.
The present invention may be further configured in a preferred embodiment as: the bottom plate is fixedly connected with a guide rail along the width direction, and the first supporting plate is connected to the guide rail in a sliding mode.
Through adopting above-mentioned technical scheme, when needs detect the rock sample, with the load bearing mechanism roll-off body scope, avoid receiving the body when placing the rock sample and hinder.
The present invention may be further configured in a preferred embodiment as: the loading device further comprises a plurality of cushion blocks, and the cushion blocks are respectively arranged on one sides, close to the rock sample, of the first extrusion plate, the second extrusion plate, the third extrusion plate and the fourth extrusion plate.
Through adopting above-mentioned technical scheme, the cushion can effectively reduce the damage that the rock sample caused to the stripper plate, can prevent moreover that each stripper plate from hindering each other in extrusion process.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the rock sample to be detected is placed on the bearing mechanism, the rock sample is extruded by the extrusion mechanism, and when the bearing mechanism is subjected to extrusion force, the bearing mechanism automatically adjusts the position under the action of the first universal joint, so that the influence on the accuracy of detection data is reduced;
2. when the rock sample needs to be detected, the bearing mechanism slides out of the range of the body, so that the rock sample is prevented from being hindered by the body when being placed;
3. the cushion block can effectively reduce the damage of the rock sample to the extrusion plates, and can prevent the extrusion plates from interfering with each other in the extrusion process.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is a schematic view of the connection between the carrying mechanism and the bottom plate according to the present embodiment;
FIG. 3 is a schematic view of the connection between the carrying mechanism and the second side plate according to the present embodiment;
fig. 4 is a schematic view of the spacer in this embodiment.
Reference numerals: 100. a body; 110. a base plate; 120. a top plate; 130. a first side plate; 140. a second side plate; 200. a loading device; 210. a carrying mechanism; 211. a first support plate; 212. a first universal joint; 213. a third support plate; 214. a first support bar; 215. a third compression plate; 216. a second support plate; 217. a second support bar; 218. a fourth compression plate; 219. a second universal joint; 220. an extrusion mechanism; 221. a first hydraulic cylinder; 222. a first pressure sensor; 223. a first squeeze plate; 224. a second hydraulic cylinder; 225. a second pressure sensor; 226. a second compression plate; 230. a first through hole; 240. a second through hole; 250. a guide rail; 260. and a cushion block.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a biaxial compression testing machine, including body 100, be provided with loading device 200 on body 100, loading device 200 includes but load-bearing mechanism 210 of automatic adjustment and the extrusion mechanism 220 of exerting the extrusion force to load-bearing mechanism 210 under the external force extrusion. The cubic rock sample to be detected is placed on the bearing mechanism 210 and is extruded by the extrusion mechanism 220, and the bearing mechanism 210 automatically adjusts the position under the action of extrusion force, so that the rock sample is uniformly stressed on the same surface, and the influence on the pressure data of the rock sample caused by nonuniform stress on each surface of the rock sample is reduced.
Referring to fig. 1, the body 100 is square, the body 100 includes a bottom plate 110 fixedly connected to the ground, a first side plate 130 and a second side plate 140 are fixedly connected to the upper end of the bottom plate 110, a top plate 120 is fixedly connected to the upper ends of the first side plate 130 and the second side plate 140, and the top plate 120 and the bottom plate 110 are parallel.
Referring to fig. 1, the pressing mechanism 220 includes a first hydraulic cylinder 221, a cylinder body of the first hydraulic cylinder 221 is fixedly connected to a lower end surface of the top plate 120, a piston rod of the first hydraulic cylinder 221 extends and retracts in a vertical direction, and the first hydraulic cylinder 221 is supplied with hydraulic oil by a hydraulic pump. One end of the piston rod of the first hydraulic cylinder 221 is fixedly connected with a first pressure sensor 222, and one side of the first pressure sensor 222, which is far away from the first hydraulic cylinder 221, is fixedly connected with a first extrusion plate 223. The piston rod of the first hydraulic cylinder 221 extends out of the cylinder body to push the first extrusion plate 223 to abut against a rock sample, the first pressure sensor 222 transmits pressure data in the vertical direction to the computer end, the first hydraulic cylinder 221 is used for providing extrusion force, and the work is stable and reliable.
Referring to fig. 1, the pressing mechanism 220 further includes a second hydraulic cylinder 224, a cylinder body of the second hydraulic cylinder 224 is fixedly connected to a side of the first side plate 130 facing the supporting mechanism 210, a piston rod of the second hydraulic cylinder 224 extends and retracts in a horizontal direction, and the second hydraulic cylinder 224 is provided with hydraulic oil by a hydraulic pump. One end of the piston rod of the second hydraulic cylinder 224 is fixedly connected with a second pressure sensor 225, and one side of the second pressure sensor 225 departing from the second hydraulic cylinder 224 is fixedly connected with a second pressing plate 226. The piston rod of the second hydraulic cylinder 224 extends out of the cylinder body to push the second squeezing plate 226 to abut against a rock sample, the second pressure sensor 225 transmits pressure data in the horizontal direction to the computer, the second hydraulic cylinder 224 provides squeezing force, and the work is stable and reliable.
Referring to fig. 1, a guide rail 250 is fixedly connected to the base plate 110 in the width direction, and the supporting mechanism 210 includes a first supporting plate 211, and the first supporting plate 211 is slidably connected to the guide rail 250. When the rock sample needs to be detected, the bearing mechanism 210 is slid out of the range of the body 100, so that the bearing mechanism is prevented from being hindered by the body 100 when the rock sample is placed.
Referring to fig. 1 and 2, a third support plate 213 is fixedly connected to a side of the first support plate 211 away from the bottom plate 110, a first through hole 230 is formed in the third support plate 213, the bearing mechanism 210 includes a first universal joint 212, one end of the first universal joint 212 passes through the first through hole 230 and is fixedly connected to the first support plate 211, and a diameter of a cylindrical portion of the first universal joint 212 is the same as a diameter of the first through hole 230. The third support plate 213 increases the connection stability between the first gimbal 212 and the first support plate 211.
Referring to fig. 2, a third pressing plate 215 is fixedly connected to the other end of the first gimbal 212. Place the rock sample on third stripper plate 215, first pneumatic cylinder 221 promotes first stripper plate 223 and extrudees the rock sample in vertical direction, and because of receiving the extrusion force of rock sample, first universal joint 212 drives third stripper plate 215 automatic adjustment position, makes third stripper plate 215 and rock sample contact surface laminating to the extrusion force evenly distributed that receives on making the rock sample contact surface reduces the influence to the measured data accuracy.
Referring to fig. 2, a first supporting rod 214 is sleeved outside the first gimbal 212, and the first supporting rod 214 is made of rubber. When the third pressing plate 215 is pressed and deviated, the first supporting rod 214 assists the third pressing plate 215 to return to the horizontal state after the pressing force disappears because the rubber has elasticity.
Referring to fig. 3, the supporting mechanism 210 includes a second supporting plate 216, the second supporting plate 216 is fixedly connected to the second side plate 140 and faces the second hydraulic cylinder 224, a second through hole 240 is formed in the second supporting plate 216, the supporting mechanism 210 further includes a second universal joint 219, one end of the second universal joint 219 passes through the second through hole 240 and is fixedly connected to the second side plate 140, and the diameter of the cylindrical portion of the second universal joint 219 is the same as the diameter of the second through hole 240. The second support plate 216 enhances the stability of the connection between the second gimbal 219 and the second side plate 140.
Referring to fig. 3, the other end of the second universal joint 219 is fixedly connected with a fourth pressing plate 218. When the fourth squeezing plate 218 is abutted to the rock sample, the second hydraulic cylinder 224 pushes the second squeezing plate 226 to squeeze the rock sample in the horizontal direction, and the second universal joint 219 drives the fourth squeezing plate 218 to automatically adjust the position due to the squeezing force of the rock sample, so that the fourth squeezing plate 218 is attached to the contact surface of the rock sample, the squeezing force applied to the contact surface of the rock sample is uniformly distributed, and the influence on the accuracy of the detection data is reduced.
Referring to fig. 3, a second support rod 217 is sleeved outside the second universal joint 219, and the second support rod 217 is made of rubber. When the fourth pressing plate 218 is pressed and deviated, the second supporting rod 217 plays a role of assisting the restoration of the fourth pressing plate 218 after the pressing force disappears because the rubber has elasticity, so that the fourth pressing plate 218 returns to a horizontal state.
Referring to fig. 4, in order to reduce the damage of the rock sample to the compression plates, it may be further provided that the bearing mechanism 210 includes four spacers 260, and the spacers 260 are respectively located on the sides of the first compression plate 223, the second compression plate 226, the third compression plate 215 and the fourth compression plate 218, which are close to the rock sample. The cushion block 260 can effectively reduce the damage of the rock sample to the compression plates and can prevent the compression plates from interfering with each other in the compression process.
The implementation manner of the embodiment is as follows: the first supporting plate 211 slides out of the body 100, a cushion block 260 is arranged on the upper end face of the third extrusion plate 215, a rock sample is arranged on the cushion block 260, a cushion block 260 is arranged on the upper end face of the rock sample, and the rock sample is positioned below the first hydraulic cylinder 221 by sliding the first supporting plate 211. Two cushion blocks 260 are arranged on two sides of the rock sample close to the second extrusion plate 226 and the fourth extrusion plate 218, a piston rod of a second hydraulic cylinder 224 extends out to drive the second extrusion plate 226 to tightly support the cushion blocks 260 and the rock sample on one side of the fourth extrusion plate 218, the fourth extrusion plate 218 is subjected to horizontal extrusion force, a second universal joint 219 drives the fourth extrusion plate 218 to automatically adjust the position, and a second pressure sensor 225 transmits detection data to a computer. The piston rod of the first hydraulic cylinder 221 extends out to drive the first extrusion plate 223 to extrude the cushion block 260, the third extrusion plate 215 is extruded in the vertical direction, the first universal joint 212 drives the third extrusion plate 215 to automatically adjust the position, and the first pressure sensor 222 transmits the detection data to the computer.
After detection is finished, the piston rod of the second hydraulic cylinder 224 is retracted into the cylinder body, and the cushion blocks 260 on the two sides of the rock sample are taken down. The first support plate 211 is slid out of the body 100 and the spacer block 260 and the rock sample on the first stripper plate 223 are removed.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. A biaxial compression testing machine, includes body (100) and sets up loading device (200) on body (100), its characterized in that: loading device (200) include but self-adjusting's load-bearing mechanism (210) and to load-bearing mechanism (210) extrusion mechanism (220) of exerting the extrusion force under the external force extrusion, extrusion mechanism (220) fixed connection is on body (100), load-bearing mechanism (210) include sliding connection first backup pad (211) on body (100), fixedly connected with first universal joint (212) on first backup pad (211), first universal joint (212) other end is towards extrusion mechanism (220).
2. The biaxial compression testing machine as set forth in claim 1, wherein: the bearing mechanism (210) comprises a first support rod (214) sleeved outside the first universal joint (212), and the first support rod (214) is made of rubber.
3. The biaxial compression testing machine as set forth in claim 2, wherein: the first supporting plate (211) is towards extrusion mechanism (220) one side fixedly connected with third supporting plate (213), has seted up first through-hole (230) on third supporting plate (213), first through-hole (230) are passed to first universal joint (212) one end, first through-hole (230) diameter is the same with first universal joint (212) cylinder portion diameter, first universal joint (212) other end fixedly connected with first extrusion board (223).
4. The biaxial compression testing machine as set forth in claim 3, characterized in that: the extrusion mechanism (220) comprises a first hydraulic cylinder (221) fixedly connected to the body (100), a piston rod of the first hydraulic cylinder (221) stretches along the vertical direction, a first pressure sensor (222) is fixedly connected to the piston rod of the first hydraulic cylinder (221), and the first pressure sensor (222) deviates from one end of the first hydraulic cylinder (221) and is fixedly connected with a third extrusion plate (215).
5. The biaxial compression testing machine as set forth in claim 4, wherein: the bearing mechanism (210) comprises a second supporting plate (216) and a second universal joint (219), the second supporting plate (216) is fixedly connected to the body (100), a second through hole (240) is formed in the second supporting plate (216), one end of the second universal joint (219) penetrates through the second through hole (240), the diameter of the second through hole (240) is the same as that of the cylindrical portion of the second universal joint (219), and a second extrusion plate (226) is fixedly connected to one end, facing the extrusion mechanism (220), of the second universal joint (219).
6. The biaxial compression testing machine as set forth in claim 5, wherein: and a second support rod (217) is sleeved outside the second universal joint, and the second support rod (217) is made of rubber.
7. The biaxial compression testing machine as set forth in claim 6, wherein: the squeezing mechanism (220) comprises a second hydraulic cylinder (224) fixedly connected to the body (100), a piston rod of the second hydraulic cylinder (224) stretches out and draws back along the horizontal direction, a second pressure sensor (225) is fixedly connected to the piston rod of the second hydraulic cylinder (224), and a fourth squeezing plate (218) is fixedly connected to one end, deviating from the second hydraulic cylinder (224), of the second pressure sensor (225).
8. The biaxial compression testing machine as set forth in claim 7, wherein: the utility model discloses a hydraulic cylinder, including body (100), body (100) are square, body (100) are including fixing at subaerial bottom plate (110), vertical fixedly connected with first curb plate (130) and second curb plate (140) on bottom plate (110), first curb plate (130) and second curb plate (140) deviate from bottom plate (110) one end fixedly connected with roof (120), roof (120) are parallel arrangement with bottom plate (110), first pneumatic cylinder (221) fixed connection is on roof (120), second pneumatic cylinder (224) fixed connection is on first curb plate (130), second universal joint fixed connection is on second curb plate (140).
9. The biaxial compression testing machine as set forth in claim 8, wherein: the bottom plate (110) is fixedly connected with a guide rail (250) along the width direction, and the first supporting plate (211) is connected to the guide rail (250) in a sliding mode.
10. The biaxial compression testing machine as set forth in claim 9, wherein: the loading device (200) further comprises a plurality of cushion blocks (260), and the cushion blocks (260) are respectively arranged on one sides, close to the rock sample, of the first compression plate (223), the second compression plate (226), the third compression plate (215) and the fourth compression plate (218).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922339556.4U CN211235307U (en) | 2019-12-20 | 2019-12-20 | Double-shaft pressure testing machine |
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| CN201922339556.4U CN211235307U (en) | 2019-12-20 | 2019-12-20 | Double-shaft pressure testing machine |
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| CN211235307U true CN211235307U (en) | 2020-08-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432975A (en) * | 2021-06-11 | 2021-09-24 | 中国石油大学(北京) | Detection device and detection system for rock sample pressurization test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432975A (en) * | 2021-06-11 | 2021-09-24 | 中国石油大学(北京) | Detection device and detection system for rock sample pressurization test |
| CN113432975B (en) * | 2021-06-11 | 2022-09-27 | 中国石油大学(北京) | Detection device and detection system for rock sample pressurization test |
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