Bentonite mud molding sand hot and wet tensile strength tester capable of stably positioning

Abstract

The utility model discloses a bentonite mud molding sand hot-wet tensile strength tester capable of stably positioning, which belongs to the technical field of intelligent hot-wet tensile strength testers and comprises a tester body, and a fixing table is mounted on the tester body. The positioning mechanism comprises an annular frame, telescopic cylinders, piston rods, an extrusion plate and a driving assembly, the annular frame is fixedly connected to the fixed table, the telescopic cylinders are connected to the inner side of the annular frame, and the piston rods are connected to the interiors of the telescopic cylinders in a sealed and sliding mode. The output end of the electric telescopic rod extends by a corresponding length, and the plurality of piston rods drive the extrusion plate to move and abut against the peripheral side of the sample under the action of hydraulic transmission, so that the peripheral side of the sample is uniformly and consistently extruded, the stability of the sample during testing is improved, and the influence of sample deviation on the accuracy of the test is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of intelligent hot and wet tensile strength testers, in particular to a bentonite slurry sand hot and wet tensile strength tester which can be stably positioned. Background Art

[0002] A stably positioned bentonite slurry sand hot wet tensile strength tester is an instrument that rapidly heats the wet sand sample of bentonite slurry sand and then measures the water-cooled condensation tensile strength. When the sample is subjected to a tensile strength test, the sample is easily deflected under the action of external force, which affects the test accuracy of the sample.

[0003] Chinese utility model application number CN202222294888.7 discloses a sample positioning structure for an intelligent hot and wet tensile strength tester, which controls the lifting and lowering of a pressure block through a hydraulic rod, and then cooperates with a pressure plate that is limited and fixed by a tension spring to clamp and position the sample placed on a fixed table. In this method, tension springs and pressure plates are used to clamp and limit the sample, and it is impossible to form a relatively consistent extrusion effect on samples of different specifications. For samples with larger sizes, the extrusion effect is too strong and easily damages the sample, while for samples with smaller sizes, the extrusion effect is too weak and the limiting effect is poor. Utility Model Content

[0004] The purpose of the utility model is to propose a bentonite slurry sand hot and wet tensile strength tester that can be stably positioned, so as to solve the problem that the traditional technology uses tension springs and pressure plates to clamp and limit samples, cannot form a relatively consistent extrusion effect on samples of different specifications, has a strong extrusion effect on samples with larger sizes, easily damages the samples, and has a weak extrusion effect on samples with smaller sizes, resulting in poor limiting effect.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A stably positioned bentonite slurry sand hot wet tensile strength tester, comprising:

[0007] A tester body, on which a fixing platform is installed;

[0008] The positioning mechanism includes an annular frame, a telescopic cylinder, a piston rod, an extrusion plate and a driving assembly. The annular frame is fixedly connected to a fixed platform. A plurality of telescopic cylinders are connected to the inner side of the annular frame. The interiors of the plurality of telescopic cylinders are all sealed and slidably connected with piston rods. The ends of the plurality of piston rods away from the telescopic cylinders are all fixedly connected with an extrusion plate. The outer side of the fixed platform is connected with a driving assembly. The output end of the driving assembly is connected to the plurality of telescopic cylinders.

[0009] Preferably, a plurality of positioning bolts are rotatably connected to the annular frame, wherein a plurality of telescopic cylinders are threadedly connected to some of the positioning bolts.

[0010] Preferably, the ends of the plurality of piston rods away from the extrusion plate are fixedly connected to return springs, and the ends of the plurality of return springs away from the piston rods are fixedly connected inside the telescopic cylinder.

[0011] Preferably, the driving assembly includes a hydraulic bin, an electric telescopic rod, a sealing plate and a hydraulic pipe. The hydraulic bin is fixedly connected to a fixed platform, an electric telescopic rod is installed in the hydraulic bin, an output end of the electric telescopic rod is fixedly connected to a sealing plate, the sealing plate is sealingly and slidably connected in the hydraulic bin, an end of the hydraulic bin away from the electric telescopic rod is connected to a hydraulic pipe, and an end of the hydraulic pipe away from the hydraulic bin is connected to the interior of a plurality of telescopic cylinders.

[0012] Preferably, the hydraulic pipe includes an output pipe, an annular pipe and a connecting pipe. The annular pipe is coaxially fixedly connected to the annular frame. The output pipe is connected between the outer side of the annular pipe and the hydraulic bin, and the connecting pipe is connected between the inner side and the multiple telescopic cylinders.

[0013] Preferably, a plurality of the connecting pipes are each installed with an electromagnetic valve, and the plurality of electromagnetic valves are each electrically connected to a controller, and the controller is installed on a fixed platform.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. In the utility model, a positioning mechanism is provided. According to the size of the sample, the output end of the electric telescopic rod is extended to a corresponding length. Through the hydraulic transmission, multiple piston rods drive the extrusion plates to move against the sides of the sample, thereby forming a uniform extrusion effect on the sides of the sample, thereby improving the stability of the sample during the test and preventing the sample from deviating and affecting the accuracy of the test.

[0016] 2. In the utility model, by setting positioning bolts, when conducting experiments on samples of different specifications, telescopic cylinders are installed at the positioning bolts at corresponding numbers and positions, so as to match the positioning operations of samples of different shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a vertical cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 for Figure 2 The enlarged schematic diagram of part A in the middle;

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of part B in the middle.

[0021] In the figure: 1 fixed platform, 2 annular frame, 3 telescopic cylinder, 4 piston rod, 5 return spring, 6 extrusion plate, 7 hydraulic chamber, 8 electric telescopic rod, 9 sealing plate, 10 hydraulic pipe, 11 output pipe, 12 annular pipe, 13 connecting pipe, 14 positioning bolt, 15 solenoid valve. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 4 , a stably positioned bentonite slurry sand hot wet tensile strength tester, comprising:

[0024] The tester body is provided with a fixing platform 1.

[0025] The positioning mechanism includes an annular frame 2, a telescopic cylinder 3, a piston rod 4, an extrusion plate 6 and a driving assembly. The annular frame 2 is fixedly connected to the fixed platform 1. A plurality of telescopic cylinders 3 are connected to the inner side of the annular frame 2. The interiors of the plurality of telescopic cylinders 3 are all sealed and slidably connected with piston rods 4. The ends of the plurality of piston rods 4 away from the telescopic cylinder 3 are all fixedly connected with the extrusion plate 6. The outer side of the fixed platform 1 is connected with the driving assembly. The output end of the driving assembly is connected to the plurality of telescopic cylinders 3.

[0026] A plurality of positioning bolts 14 are rotatably connected to the annular frame 2 , wherein a plurality of telescopic cylinders 3 are threadedly connected to some of the positioning bolts 14 .

[0027] The ends of the multiple piston rods 4 away from the extrusion plate 6 are all fixedly connected with the return springs 5 ​​, and the ends of the multiple return springs 5 ​​away from the piston rods 4 are all fixedly connected inside the telescopic cylinder 3 .

[0028] The driving assembly includes a hydraulic bin 7, an electric telescopic rod 8, a sealing plate 9 and a hydraulic pipe 10. The hydraulic bin 7 is fixedly connected to the fixed platform 1. The electric telescopic rod 8 is installed in the hydraulic bin 7. The output end of the electric telescopic rod 8 is fixedly connected to the sealing plate 9. The sealing plate 9 is sealingly and slidably connected in the hydraulic bin 7. The end of the hydraulic bin 7 away from the electric telescopic rod 8 is connected to the hydraulic pipe 10. The end of the hydraulic pipe 10 away from the hydraulic bin 7 is connected to the inside of multiple telescopic cylinders 3.

[0029] The hydraulic pipe 10 includes an output pipe 11, an annular pipe 12 and a connecting pipe 13. The annular pipe 12 is coaxially fixedly connected to the annular frame 2. The output pipe 11 is connected between the outer side of the annular pipe 12 and the hydraulic bin 7, and the connecting pipes 13 are connected between the inner side and the multiple telescopic cylinders 3.

[0030] Solenoid valves 15 are installed on multiple connecting pipes 13, and multiple solenoid valves 15 are electrically connected to a controller. The controller is installed on a fixed platform 1, and multiple solenoid valves 15 are individually connected in series with the controller. The controller can individually control the on and off of multiple solenoid valves 15, which is convenient for matching the operation of different numbers of telescopic cylinders 3.

[0031] The operating principle of the utility model is now described as follows:

[0032] When conducting a hot wet tensile strength test on bentonite slurry molding sand, the sample is placed between a plurality of extrusion plates 6 in a ring frame 2 of a fixed table 1;

[0033] According to the sample size, the output end of the electric telescopic rod 8 is controlled to extend to a corresponding length, and the sealing plate 9 is pushed to move, so as to squeeze the liquid in the hydraulic chamber 7. Under the action of hydraulic transmission, the piston rod 4 in the telescopic cylinder 3 is pushed through the hydraulic pipe 10, and the elastic force of the return spring 5 is overcome to move the piston rod 4, thereby driving the squeezing plate 6 to move. Under the joint action of multiple squeezing plates 6, a uniform squeezing effect is formed on the periphery of the sample, thereby improving the stability of the sample during the test and preventing the sample from deviating and affecting the accuracy of the test.

[0034] At the same time, when conducting experiments on samples of different specifications, the positioning operations of samples of different shapes can be matched by installing the telescopic cylinders 3 at the positioning bolts 14 at the corresponding number and positions.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stably positioned bentonite slurry sand hot wet tensile strength tester, characterized in that: include: A tester body, on which a fixing platform (1) is installed; A positioning mechanism, the positioning mechanism comprising an annular frame (2), a telescopic cylinder (3), a piston rod (4), an extrusion plate (6) and a driving assembly, the annular frame (2) being fixedly connected to a fixed platform (1), a plurality of telescopic cylinders (3) being connected to the inner side of the annular frame (2), the interior of the plurality of telescopic cylinders (3) being sealed and slidably connected to the piston rod (4), the ends of the plurality of piston rods (4) being away from the telescopic cylinder (3) being fixedly connected to the extrusion plate (6), the outer side of the fixed platform (1) being connected to the driving assembly, the output end of the driving assembly being in communication with the plurality of telescopic cylinders (3).

2. The stably positioned bentonite slurry sand hot wet tensile strength tester according to claim 1, characterized in that: in: A plurality of positioning bolts (14) are rotatably connected to the annular frame (2), wherein a plurality of telescopic cylinders (3) are threadedly connected to some of the positioning bolts (14).

3. The stably positioned bentonite slurry sand hot wet tensile strength tester according to claim 1, characterized in that: in: The ends of the plurality of piston rods (4) away from the extrusion plate (6) are all fixedly connected to a return spring (5), and the ends of the plurality of return springs (5) away from the piston rod (4) are all fixedly connected inside the telescopic cylinder (3).

4. The stably positioned bentonite slurry sand hot wet tensile strength tester according to claim 1, characterized in that: in: The driving assembly comprises a hydraulic bin (7), an electric telescopic rod (8), a sealing plate (9) and a hydraulic pipe (10); the hydraulic bin (7) is fixedly connected to a fixed platform (1); an electric telescopic rod (8) is installed in the hydraulic bin (7); an output end of the electric telescopic rod (8) is fixedly connected to a sealing plate (9); the sealing plate (9) is sealingly slidably connected in the hydraulic bin (7); an end of the hydraulic bin (7) away from the electric telescopic rod (8) is connected to a hydraulic pipe (10); and an end of the hydraulic pipe (10) away from the hydraulic bin (7) is connected to the interior of a plurality of telescopic cylinders (3).

5. The stably positioned bentonite slurry sand hot wet tensile strength tester according to claim 4, characterized in that: in: The hydraulic pipe (10) comprises an output pipe (11), an annular pipe (12) and a connecting pipe (13); the annular pipe (12) is coaxially fixedly connected to the annular frame (2); the output pipe (11) is connected between the outer side of the annular pipe (12) and the hydraulic chamber (7); and the connecting pipe (13) is connected between the inner side of the annular pipe (12) and the plurality of telescopic cylinders (3).

6. The stably positioned bentonite slurry sand hot wet tensile strength tester according to claim 5, characterized in that: in: A solenoid valve (15) is installed on each of the plurality of connecting pipes (13), and each of the plurality of solenoid valves (15) is electrically connected to a controller, and the controller is installed on the fixed platform (1).

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