CN210863397U - Hydraulic full-automatic point load tester - Google Patents
Hydraulic full-automatic point load tester Download PDFInfo
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- CN210863397U CN210863397U CN201921264210.6U CN201921264210U CN210863397U CN 210863397 U CN210863397 U CN 210863397U CN 201921264210 U CN201921264210 U CN 201921264210U CN 210863397 U CN210863397 U CN 210863397U
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Abstract
A hydraulic full-automatic point load tester comprises a hydraulic operating cabinet, wherein a hydraulic motor device for loading is arranged in the hydraulic operating cabinet, a telescopic piston guide rod is arranged above the hydraulic motor device, and the piston guide rod is connected with a slide block arranged in a pressurizing frame so as to drive the slide block to move up and down; the lower ball end cone is arranged on the sliding block, the upper ball end cone is fixed on the pressurizing frame, and the upper ball end cone and the lower ball end cone are fully contacted with the rock test piece during the test and are used for fixing the rock test piece and performing the pressurizing test; the upper ball end cone is provided with a pressure sensor for measuring the loading pressure of the test, and the sliding block is provided with a displacement sensor for measuring and reading the displacement of the rock test piece. The utility model discloses can satisfy stability, accuracy and the time controllability that the rock test piece bore pressure when experimental to can survey at any time and read the displacement of test piece at the loading in-process, improve pressure conduction's accuracy and experimental precision, guarantee experimental security and sanitation.
Description
Technical Field
The utility model relates to a geotechnical engineering test field is a full-automatic some load test appearance of fluid pressure type for indoor rock is experimental.
Background
The point load test is a simple method for testing the compressive strength of rock, concrete or other natural building materials under point load, and is especially suitable for weathered rock, weak broken rock and the like which are difficult to prepare samples in indoor tests. In the test, samples such as rocks are placed between two ball-end cones of a point load instrument, and vertical concentrated load is applied until the test piece is damaged. At present, a point load tester is generally adopted, and a pressurizing device of the point load tester mainly adopts a jack. The rock sample is placed between two ball-end cones in a pressurizing frame, an axial pressure is applied to the sample by adopting a manual operation jack to destroy the sample, a destruction load is led out by a pressure sensor arranged on the upper ball-end cone, and the distance between loading points of instant destruction is manually estimated and read by adopting a scale. The traditional point load tester has the following defects: 1. the current test specification requires that the test is uniform and stable when the test applies load to the sample and is damaged within 10-60 s, but the current test specification does not easily achieve uniformity and stability and control time when a jack is manually used for applying load, so that labor is wasted, and the test precision is low; 2. when the standard requires conditions, the distance between loading points at the moment of damage of a test piece is measured, and the conventional equipment adopts manual measurement by using a scale, so that the distance between the loading points at the moment of damage is difficult to accurately read, and the manual reading has large errors; 3. the existing tester adopts an open type, and fragments generated when a test piece is damaged and cracked easily injure operators; 4. the test piece fragment piece that the experiment produced splashes everywhere, pollutes the environment, cleans inconvenient.
In a word, when the traditional point load tester is used for testing, the manpower is consumed, the testing accuracy is low, the broken stones easily splash operating personnel, the danger is high, the potential safety hazard exists, and the generated waste residues are not easy to clean. In view of the above reasons, the device and the test method are designed to meet the automation requirements of the test technology, improve the working efficiency and the test precision, overcome the inaccuracy of the pressurization of the manual jack and the reading of the scale and overcome the defects that the personnel safety and the environmental sanitation cannot be ensured in the open operation test.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a full-automatic point load test appearance of fluid pressure type can satisfy stability, accuracy and the time controllability that the rock test piece bore pressure when experimental to can survey at any time and read the displacement of test piece at the loading in-process, improve pressure conduction's accuracy and experimental precision, guarantee experimental security and sanitation.
In order to realize the purpose, the technical scheme of the utility model is that: a hydraulic full-automatic point load tester is characterized by comprising
The hydraulic control device comprises a hydraulic operation cabinet, a pressurizing frame and a safety protection cover, wherein the pressurizing frame and the safety protection cover are arranged above the pressurizing frame in a covering mode, a hydraulic motor device used for loading is placed in the hydraulic operation cabinet, a telescopic piston guide rod is arranged above the hydraulic motor device, and the piston guide rod is connected with a sliding block arranged in the pressurizing frame to drive the sliding block to move up and down;
the pressurizing structure comprises a lower ball-end cone and an upper ball-end cone, the lower ball-end cone is mounted on the sliding block, the upper ball-end cone is positioned above the lower ball-end cone and corresponds to the lower ball-end cone, the upper ball-end cone is fixed on the pressurizing frame, a certain distance is reserved between the lower ball-end cone and the upper ball-end cone so that a rock test piece can be arranged between the lower ball-end cone and the upper ball-end cone for pressurizing test, and the upper ball-end cone and the lower ball-end cone are fully contacted with the rock test piece during the test and are used for fixing the rock test piece;
the pressure sensor is connected with the upper ball end cone, fixed on the pressurizing frame, connected with an external computer acquisition system through a lead and used for measuring the loading pressure of the test;
and the displacement sensor is fixed on the pressurizing frame, is connected with an external computer acquisition system through a lead and is used for measuring and reading the displacement of the rock test piece, and the end of the sensor is arranged on the sliding block during the test.
Furthermore, the pressurizing frame comprises a pressurizing frame base arranged above the hydraulic operation cabinet and pressurizing frame rod pieces positioned on two sides of the pressurizing frame base, and two ends of the sliding block penetrate through the pressurizing frame rod pieces on the two sides and can slide up and down along the pressurizing frame rod pieces.
Furthermore, a tray which is obliquely arranged is arranged on the base of the pressurizing frame and is used for collecting the rock test piece fragments.
Furthermore, one end of the tray is arranged on the pressurizing frame base, and a steel support is arranged at the position, close to the other end, of the bottom of the tray, so that the tray is arranged on the pressurizing frame base at an inclination angle of 20-40 ℃.
Further, the safety protection cover is a totally enclosed organic glass protection cover, is connected with the pressurizing frame into a whole through a fixing screw, and is convenient for test loading and unloading of rock test pieces and cleaning of broken stones by adopting a hinge and a lock catch to set a switchable door on the front side of the organic glass protection cover.
Furthermore, the hydraulic operation cabinet is provided with an operation table, the operation table is inclined at 30 ℃, the operation table is provided with a pressure regulating valve, and the pressure regulating valve is connected with the hydraulic motor device and is used for regulating the loading size and the loading rate of the hydraulic motor device.
Furthermore, a motor control device is arranged on an operation table top of the operation cabinet, and the motor control device is connected with the hydraulic motor device and used for controlling the operation of the hydraulic motor device.
The utility model adopts the hydraulic pressure equipment, can control the loading size, can set the loading speed according to the requirement, is more stable than the traditional manual loading by adopting a jack, is easier to control the loading time, has even rock sample stress, and improves the accuracy of the test; by adopting the displacement sensor, the deformation of the rock sample can be recorded in the whole process, the distance between loading points damaged instantly can be accurately measured, and the precision is improved compared with the traditional manual measurement by adopting a ruler; the totally-enclosed organic glass protective cover is adopted, so that the broken stones can be effectively prevented from splashing when the rock sample is cracked in the test, and the safety of test operators is ensured; in addition, the test device is provided with the inclined tray, rock sample fragments can be timely and conveniently collected, and the sanitation and tidiness of the test environment are guaranteed. The utility model discloses a hydraulic pressure operation cabinet operating panel adopts 30 ℃ of inclination to set up, is convenient for read and operate to it has pressure regulating valve controlling means and motor control device to inlay, is used for controlling hydraulic means's switch and adds the release.
Drawings
Fig. 1 is a schematic view of the front side of the structure of the present invention.
Fig. 2 is a schematic side view of the structure of the present invention.
Fig. 3 is a schematic view of a plexiglass protective cover.
The figure includes: 1-a hydraulic motor arrangement; 2-a pressure regulating valve arrangement; 3-a motor control device; 4-a slide block; 5-lower ball end cone; 6-upper ball end cone; 7-a displacement sensor; 8-a pressure sensor; 9-a pressing frame; 10-a tray; 11-a steel support; 12-locking and buckling; 13-organic glass protective cover; 14-a hydraulic operating cabinet; 15-an operating panel; 16-a set screw; 17-a piston guide; 18 a pressurized frame base; 19-a hydraulic operating cabinet base; 20-sensor leads; 21-pressurized frame holes; 22-piston rod hole; 23-a hinge; 24-a door handle; 25-a wire hole; 26-operating the cabinet door; 27-organic glass protective cover door.
Detailed Description
The following describes the present invention in detail with reference to the drawings and specific embodiments thereof.
As shown in fig. 1, a front schematic view of a hydraulic full-automatic point load tester comprises a hydraulic operation cabinet 14, which is provided with 2 openable operation cabinet doors 26, a hydraulic motor device 1 is installed in the hydraulic operation cabinet 14, and a telescopic piston guide rod 17 is installed at the upper part of the hydraulic operation cabinet; the operation cabinet 14 is provided with a pressure regulating valve device 2 and a motor control device 3; the top of the hydraulic operation cabinet 14 is provided with a pressurizing frame base 18 and a piston guide rod 17 penetrating through the pressurizing frame base 18, the pressurizing frame base 18 is provided with a pressurizing frame 9, the upper part of the pressurizing frame 9 is provided with a pressure sensor 8 and is connected with an upper ball end cone 6 into a whole, the lower part of the pressurizing frame 9 is sleeved with a sliding block 4, a lower ball end cone 5 is fixed on the sliding block, the piston guide rod 17 is positioned at the bottom of the sliding block 4, the middle part of the pressurizing frame 9 is provided with a displacement sensor 7 connected with a computer, and the displacement end of the displacement sensor is arranged on the; the organic glass protective cover 13 is externally connected with the pressurizing frame 9 by adopting a fixing screw 16, the inclined tray 10 is arranged at the bottom of the organic glass protective cover 13 and is positioned on the pressurizing frame base 18, and the organic glass protective cover 13 is provided with 1 openable organic glass protective cover door 27. By spherical-end cone is meant here that the front end of the cone is spherical.
Fig. 2 is a schematic side view of a hydraulic full-automatic point load tester. A hydraulic motor device 1 for controlling hydraulic pressure is arranged in a hydraulic operation cabinet 14 and is arranged on an operation cabinet base 19, and a pressure regulating valve device 2 and a motor control device 3 are arranged on an operation panel 15 of the operation cabinet 14; the upper part of the hydraulic motor device 1 is provided with a piston guide rod 17, penetrates through a pressurizing frame base 18 and the inclined tray 10, extends to the bottom of the sliding block 4 and can control the lifting of the sliding block; the tray 10 is arranged on a pressurizing frame base 18 through a steel support 11; the organic glass protective cover 13 is connected with the pressurizing frame 9 and the pressurizing frame base 16 through a fixing screw 16; the sensor wires 20 drawn out by the displacement sensor 7 and the pressure sensor 8 fixed on the pressurizing frame 9 are connected with an external computer acquisition system through a wire hole 25 reserved on the organic glass protective cover, and can transmit displacement and pressure test data in real time.
Fig. 3 is a schematic view of a plexiglass protective cover. The organic glass protective cover 13 is internally provided with an inclined tray 10, 3 holes are arranged on the inclined tray, can pass through the pressurizing frame 9 and the piston guide rod 17, is arranged on a pressurizing frame base 18 and is fixed by a steel support 11; a lead hole 25 is reserved on the back of the organic glass protective cover, so that the displacement and pressure sensor lead 20 can be conveniently drawn out; the organic glass protective cover 13 is provided with 1 openable door 27 and is closed through the lock catch 12, so that broken stones in the test are prevented from splashing and bursting out.
When the test is started, a power switch is switched on, a motor is started, a pressure regulating valve control device is started to regulate the oil pressure, a hydraulic device is utilized to enable a piston guide rod to rapidly move upwards, a sliding block and a lower ball end cone are pushed to move upwards, when the piston guide rod moves upwards to a distance which can be equal to the size of a rock test piece arranged between the piston guide rod and the upper ball end cone, the hydraulic pressure is stopped by adopting the pressure regulating valve, the lower ball end cone also stops moving upwards, an organic glass protective cover door is opened, the rock test piece is arranged, the hydraulic pressure is started, the lower ball end cone continues moving upwards at a low speed, the hydraulic pressure is closed when the upper ball end cone and the lower ball end cone are fully contacted with the rock test piece, the upward movement is stopped, a displacement sensor and a pressure sensor are arranged, the organic glass protective cover door is. And closing the hydraulic pressure to stop the test after the rock test piece is broken, opening a protective cover door, cleaning broken stones at the bottom of the tray, restoring the hydraulic equipment, and preparing the next group of tests.
The hydraulic motor pressurization control device provided by the utility model adopts the hydraulic pressurization equipment, can realize uniform loading, can control the pressurization time as required, is more stable than the manual loading of the traditional jack, has uniform stress on the rock test piece, improves the test precision and saves the manpower; the displacement sensor is adopted, so that the distance between loading points and the deformation of the rock test piece can be measured and read at any time, and the precision is improved compared with the traditional manual scale measurement; the organic glass protective cover can effectively prevent broken fragments of the rock test piece from hurting people in the loading process, eliminates potential safety hazards, and simultaneously can monitor the test operation process in real time due to the adoption of transparent organic glass; the inclined tray can conveniently collect rock fragments and scraps, so that the environmental sanitation is ensured; in addition, the hydraulic operation cabinet occupies a small area, the whole hydraulic motor device is arranged in the hydraulic operation cabinet, the hydraulic operation cabinet is neat and attractive, and the operation panel adopts an inclined panel, so that the operation and the reading are convenient.
Claims (7)
1. A hydraulic full-automatic point load tester is characterized by comprising
The hydraulic control device comprises a hydraulic operation cabinet, a pressurizing frame and a safety protection cover, wherein the pressurizing frame and the safety protection cover are arranged above the pressurizing frame in a covering mode, a hydraulic motor device used for loading is placed in the hydraulic operation cabinet, a telescopic piston guide rod is arranged above the hydraulic motor device, and the piston guide rod is connected with a sliding block arranged in the pressurizing frame to drive the sliding block to move up and down;
the pressurizing structure comprises a lower ball-end cone arranged on the sliding block and an upper ball-end cone which is positioned above the lower ball-end cone and arranged corresponding to the lower ball-end cone, the upper ball-end cone is fixed on the pressurizing frame, and a certain distance is reserved between the lower ball-end cone and the upper ball-end cone so as to arrange the rock test piece between the lower ball-end cone and the upper ball-end cone for pressurizing test;
the pressure sensor is connected with the upper ball end cone, fixed on the pressurizing frame, connected with an external computer acquisition system through a lead and used for measuring the loading pressure of the test;
and the displacement sensor is fixed on the pressurizing frame, is connected with an external computer acquisition system through a lead and is used for measuring and reading the displacement of the rock test piece.
2. The hydraulic full-automatic point load tester of claim 1, wherein the pressing frame comprises a pressing frame base disposed above the hydraulic operation cabinet, and pressing frame rods disposed at two sides of the pressing frame base, and two ends of the sliding block pass through the pressing frame rods at two sides and can slide up and down along the pressing frame rods.
3. A hydraulic fully automatic point load tester as claimed in claim 1 wherein the base of the pressure frame is provided with an inclined tray for collecting rock specimen fragments.
4. A hydraulic full-automatic point load tester as claimed in claim 3, wherein one end of the tray is arranged on the base of the pressurizing frame, and the bottom of the tray is provided with a steel support near the other end, so that the tray is arranged on the base of the pressurizing frame at an inclination angle of 20-40 ℃.
5. The hydraulic full-automatic point load tester of claim 1, wherein the safety protection cover is a fully-enclosed organic glass protection cover, which is connected with the pressure frame by a fixing screw, and the front of the organic glass protection cover is provided with a door capable of being opened and closed by a hinge and a lock catch, so as to facilitate the loading and unloading of rock test pieces and the cleaning of broken stones.
6. The hydraulic full-automatic point load tester of claim 1, wherein the hydraulic operating cabinet is provided with an operating platform, the operating platform is inclined at 30 ℃, the operating platform is provided with a pressure regulating valve, and the pressure regulating valve is connected with the hydraulic motor device and is used for regulating the loading size and the loading rate of the hydraulic motor device.
7. A hydraulic full-automatic point load tester as claimed in claim 6, wherein the operation table of the operation cabinet is provided with a motor control device, and the motor control device is connected with the hydraulic motor device and used for controlling the operation of the hydraulic motor device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921264210.6U CN210863397U (en) | 2019-08-06 | 2019-08-06 | Hydraulic full-automatic point load tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921264210.6U CN210863397U (en) | 2019-08-06 | 2019-08-06 | Hydraulic full-automatic point load tester |
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| Publication Number | Publication Date |
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| CN210863397U true CN210863397U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921264210.6U Active CN210863397U (en) | 2019-08-06 | 2019-08-06 | Hydraulic full-automatic point load tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033838A (en) * | 2020-08-17 | 2020-12-04 | 山东大学 | Automatic testing device for point load of rock and soil mass and working method |
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2019
- 2019-08-06 CN CN201921264210.6U patent/CN210863397U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033838A (en) * | 2020-08-17 | 2020-12-04 | 山东大学 | Automatic testing device for point load of rock and soil mass and working method |
| CN112033838B (en) * | 2020-08-17 | 2022-07-26 | 山东大学 | Automatic testing device for point load of rock and soil mass and working method |
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