Improved device for measuring stone rate of grouting slurry in goaf

Abstract

The utility model discloses an improved device for measuring the stone rate of grouting slurry in a goaf. The device comprises a triple bottomed test mold, a triple bottomless test mold, a detachable fixed baffle and a base, each of the triple bottomed test mold and the triple bottomless test mold is formed by connecting a graduated detachable partition plate and a graduated detachable baffle through a limiting groove and a limiting block; the base is provided with a groined groove, and the detachable fixed baffle is installed on the base in a sliding mode along the groined groove. The device can be used for preparing the stone body test block with the standard size meeting the specification, and the problems that the test block cannot be formed at a time and the height of the test block does not reach the standard are solved. All parts of the device are detachable, so that the device is convenient to carry and meets the use requirements of indoor experiments and outdoor experiments.

Description

TECHNICAL FIELD

[0001] The utility model belongs to civil engineering test device technical field, concretely relates to an improved goaf grouting slurry stone rate measuring device. BACKGROUND

[0002] Goaf grouting slurry stone rate is an important parameter reflecting the filling density of goaf slurry. Determining the goaf grouting slurry stone rate is to more truly evaluate the filling effect and curing performance of the slurry, which helps to optimize the grouting slurry formula, improve the performance and effect of the grouting slurry, and is also an important means of quality control in the construction preparation stage and quality evaluation in the construction stage. The article "Goaf Highway Design and Construction Technology Specification" (JTG / T 3331-03-2024) 7.2.6 article states that slurry stone rate measurement is to pour the prepared slurry into a graduated cylinder with a volume of 100 ml, and after standing for 3-5 hours, the solid volume is read as the stone rate by the graduated cylinder scale.

[0003] It should be noted that during the slurry stone rate measurement process, a graduated cylinder is often selected as the test device, and the height change of the slurry is read by visualizing the scale value after a period of standing. Since the material of the graduated cylinder in the laboratory is generally glass or plastic, it is easy to break during use. After reading the stone rate, strength test, durability test, etc. need to be performed using the stone body, but the stone body made of the graduated cylinder cannot meet the corresponding requirements, affecting the subsequent detection and increasing the workload of the test. At the same time, during the process of making the stone block by using the standard test mold of 70.7mmx70.7mmx70.7mm, since the slurry stone rate that meets the site pumping is mostly between 80% and 95%, the height of the prepared test block is not up to standard. In actual operation, the test personnel need to frequently supplement the grouting slurry. Since the interval time of supplementing is long, the stone body may have a stratification phenomenon, and the compressive strength of the final stone body has a certain deviation, which cannot truly reflect the strength of the stone body. During the measurement process of the grouting slurry stone rate at the construction site, since the ground at the construction site is uneven, and the grouting slurry has fluidity, the shape of the stone body formed by the grouting slurry is irregular, and the finally measured stone rate is not accurate. UTILITY MODEL CONTENTS

[0004] The utility model provides an improved goaf grouting slurry stone rate measuring device, which can simultaneously meet the requirements of measuring the goaf grouting slurry stone rate and the compressive strength of the stone body, and does not need to use a graduated cylinder for standing. Using the device can meet the preparation of standard size stone body test blocks that meet the specification, solve the problem of non-one-time molding of the test block and non-standard height of the test block, and then use the standard test block to test the strength and durability of the stone body. The device can simultaneously meet the needs of laboratory and construction site use.

[0005] The improved device for determining the stone-forming rate of grouting slurry in goaf areas includes a three-piece bottomed mold 1, a three-piece bottomless mold 2, a detachable fixed baffle 3, and a base 4. Both the three-piece bottomed mold 1 and the three-piece bottomless mold 2 are composed of a graduated detachable partition 201 and a detachable baffle 202 connected to a limiting block via a limiting groove. The base 4 has a "well"-shaped groove 7, and the detachable fixed baffle 3 is slidably mounted on the base 4 along the "well"-shaped groove 7.

[0006] The base 4 has a fixed hinge plate 9 and a fixed slider 8 that cooperate with it at the outer edge of the detachable fixed baffle 3. The hinge plate 9 is installed on the base plate 4 by fixing bolts 11. The hinge plate 9 is folded by hinge 10. The fixed slider 8 slides in the hinge plate 9 to lock the detachable fixed baffle 3.

[0007] The base 4 has an opening on its side for mounting a support adjustment knob 6. A rigid connecting rod 14 is horizontally welded along the side of the support adjustment knob 6. A rigid connecting rod 2 15 is vertical, with its upper end welded perpendicularly to the rigid connecting rod 14 and its lower end welded to the slider 16. The slider 16 slides freely in the sliding groove 17. A rubber support 12 is bonded below the sliding groove 17. Rotating the support adjustment knob 6 causes the rigid connecting rod 14 to rotate in the fixed sleeve 13, thereby causing the rigid connecting rod 2 15 to move up and down. The slider 16 slides in the sliding groove 17, thus realizing the up and down displacement of the rubber support.

[0008] A level 5 is also installed on the base 4.

[0009] The dimensions of each compartment in the three-section bottomed mold 1 and the three-section bottomless mold 2 are 70.7mm × 70.7mm × 70.7mm.

[0010] The scale of the three-piece bottomless test mold 2 with a detachable graduated partition starts at 70mm, which facilitates direct measurement.

[0011] The advantages of this invention over traditional graduated cylinder measurement of grout stone formation rate are as follows:

[0012] (1) Both the bottomless and bottomed molds of this device can be disassembled into baffles and partitions, which facilitates the demolding of the stone body and can obtain three samples at one time;

[0013] (2) The bottomless test mold partition of the device has a scale with a starting value of 70mm, which facilitates reading during the test;

[0014] (3) The base of the device is provided with a "well" shaped groove, which facilitates the installation and removal of the detachable fixing baffle;

[0015] (4) The base of the device is equipped with a fixed hinge and a sliding fixing block, which can better fix the baffle;

[0016] (5) The device base is provided with a level, the overall flatness of the test mold can be adjusted by adjusting the height of the support, and the test mold is kept in a horizontal state during the test;

[0017] (6) All components of the device are detachable, convenient to carry, and meet the use needs of indoor experiments and outdoor tests. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The shaft drawing of the improved grouting stone rate measuring device is provided in the utility model.

[0019] Figure 2 The explosion drawing of the improved grouting stone rate measuring device is provided in the utility model.

[0020] Figure 3 The base plan view of the improved grouting stone rate measuring device is provided in the utility model.

[0021] Figure 4 For Figure 1 The enlarged view of A in the middle.

[0022] Figure 5 The schematic diagram of the adjustable support.

[0023] Legend:

[0024] 1, triple belt bottom test mold; 2, detachable triple bottom test mold; 3, detachable fixed baffle; 4, base; 5, level; 6, support adjustment knob; 7, "well" groove; 8, fixed sliding block; 9, hinged plate; 10, hinge; 11, fixed bolt; 12, rubber support; 13, fixed sleeve; 14, rigid connecting rod one; 15, rigid connecting rod two; 16, sliding block; 17, sliding groove; 201, detachable scale baffle; 202, detachable baffle. DETAILED DESCRIPTION

[0025] Example 1

[0026] The improved goaf grouting slurry stone rate measuring device comprises a triple belt bottom test mold 1, a triple bottom test mold 2, a detachable fixed baffle 3 and a base 4. The triple belt bottom test mold 1 and the triple bottom test mold 2 are both connected by a limiting groove and a limiting block and composed of a detachable scale baffle 201 and a detachable baffle 202; the base 4 is provided with a "well" groove 7, and the detachable fixed baffle 3 is slidably installed on the base 4 along the "well" groove 7.

[0027] The base 4 is provided with a fixed hinged plate 9 and a fixed sliding block 8 matched therewith at the outer side of the detachable fixed baffle 3, the hinged plate 9 is installed on the base 4 through a fixed bolt 11, the hinged plate 9 is folded through a hinge 10, and the fixed sliding block 8 is slid in the hinged plate 9 to lock the detachable fixed baffle 3.

[0028] The base 4 is provided with a side opening mounting support adjusting knob 6. A rigid connecting rod 1 is horizontally welded along the side of the support adjusting knob 6. A rigid connecting rod 2 is vertically welded at the upper end of the rigid connecting rod 1 and at the lower end of a sliding block 6. The sliding block 6 is freely slid in a sliding groove 17, and a rubber support 12 is adhered below the sliding groove 17. The rotation of the support adjusting knob 6 drives the rigid connecting rod 1 to rotate in the fixed sleeve 13, thereby driving the rigid connecting rod 2 to move up and down, the sliding block 6 to slide in the sliding groove 17, and the rubber support 12 to move up and down.

[0029] The base 4 is further provided with a level 5.

[0030] The size of each grid in the triple-belt bottom test mold 1 and the triple-belt bottom test mold 2 is 70.7mm×70.7mm×70.7mm.

[0031] The scale of the detachable partition plate of the triple-belt bottom test mold 2 is 70mm, which is convenient for direct measurement.

Claims

1. An improved device for determining the grout stone rate of a grout in a goaf, characterized by, The device includes a three-piece bottomed test mold, a three-piece bottomless test mold, a detachable fixed baffle, and a base; the three-piece bottomed test mold and the three-piece bottomless test mold are both composed of a graduated detachable partition and a detachable baffle connected to a limiting block through a limiting groove; the base is provided with a "well" shaped groove, and the detachable fixed baffle is slidably installed on the base along the "well" shaped groove.

2. The improved goaf grouting slurry stone rate determination device according to claim 1, characterized in that, The base has a fixed hinge plate and a fixed slider that cooperate with it at the outer edge of the detachable fixed baffle. The hinge plate is installed on the base plate by fixing bolts. The hinge plate is folded by hinges. The fixed slider slides in the hinge plate to lock the detachable fixed baffle.

3. The improved goaf grouting slurry stone rate determination device according to claim 1, characterized in that, The base has an opening on its side to install a support adjustment knob. A rigid connecting rod one is horizontally welded along the side of the support adjustment knob. A rigid connecting rod two is vertical, with its upper end welded perpendicularly to the rigid connecting rod one and its lower end welded to the slider. The slider slides freely in the sliding groove (17). A rubber support (12) is bonded below the sliding groove. Rotating the support adjustment knob causes the rigid connecting rod one to rotate in the fixed sleeve, thereby causing the rigid connecting rod two to move up and down. The slider slides in the sliding groove, thus realizing the up and down displacement of the rubber support.

4. The improved goaf grouting slurry stone rate determination device according to claim 1, characterized in that, A level is also installed on the base.

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