Device and method for multi-axis simultaneous measurement of expansion rate of filling material

Abstract

The invention provides a multi-axis simultaneous measurement filling material expansion rate device and a measurement method, and relates to the technical field of mining filling. The device comprises a seat frame structure, a measuring structure and a test piece structure, the seat frame structure comprises a curved truss, a base and a test piece bearing device, the measuring structure comprises a direct measuring part and a laser measuring part, the measuring structure is composed of a plastic sheet, a foam transmission shaft and a graduator, and the direct measuring part comprises a foam graduator and a graduated scale. The laser measuring part comprises a laser transmitter and a laser receiving plate, and the test piece structure is a cylindrical barrel. During measurement, an expansion filling material is placed in a test piece structure and stricken off, a plastic sheet is placed in the center of the surface of the test piece structure, when the filling material expands along with time, the foam transmission shaft is pushed to move upwards, the foam graduator and the laser transmitter move along with the foam transmission shaft, the expansion height is directly read through the foam graduator, and the moving distance of the laser graduator is recorded in real time. The device can directly measure the expansion height of the filling material.

Description

Technical Field

[0001] The invention relates to the technical field of mining filling, in particular to a multi-axis joint measurement device and a measurement method for expansion rate of filling materials. Background Art

[0002] Mine filling is an indispensable part of current mines, among which the filling and top connection problem is particularly difficult to solve, and with the increase in the depth of mining, solving the filling and top connection problem is more important. At present, a better way to solve the filling and top connection problem is to optimize the filling material, add an expansion agent to the filling material, so that the filling slurry can expand and connect to the top after solidification, among which the measurement of the indoor expansion rate of the expansion filling material is particularly important. The present invention provides a multi-axis joint measurement filling material expansion rate device and measurement method, which can realize the precise and intuitive measurement of the expansion rates of multiple identical or different materials at the same time, and can monitor and compare the expansion changes of the filling materials in real time, which greatly improves the measurement accuracy and efficiency of the expansion rate of mine expansion filling materials. Summary of the invention

[0003] In order to solve the technical problem of inconvenient expansion rate measurement in the prior art, the embodiment of the present invention provides a multi-axis joint measurement device and method for expansion rate of filling materials, which can directly measure the expansion height of the filling material and monitor the expansion of the filling material in real time. At the same time, the multi-axis joint measurement device can simultaneously measure the expansion of multiple groups of expansion materials with different materials or different proportions, achieving the effect of reducing errors in the same group and significantly comparing different groups, which has extremely high application value in the expansion rate test of mine filling expansion materials. The technical solution is as follows:

[0004] A multi-axis joint measurement device for expansion rate of filling materials, comprising a frame structure, a measurement structure and a test piece structure.

[0005] The frame mechanism includes a curved truss, a base and a specimen bearing device.

[0006] The measuring structure includes a plastic sheet, a foam transmission shaft, a direct measuring part and a laser measuring part. The direct measuring part includes a foam scaler and a scale. The laser measuring part includes a laser transmitter and a laser receiving board.

[0007] The specimen structure is a cylindrical barrel;

[0008] At least two groups of curved trusses are installed on the base at equal intervals, and a specimen carrying device is fixedly connected to the corresponding side of the base under each group of curved trusses, and a cylindrical barrel is placed in the specimen carrying device;

[0009] The lower end of each set of curved trusses is fixedly mounted on the base, a rectangular frame is fixed at the front end of the elbow of each set of curved trusses, a laser receiving plate is mounted on one side of the rectangular frame close to the curved truss, and a scale is mounted on the side opposite to the laser receiving plate;

[0010] A foam transmission shaft is bonded to the center of the upper part of the plastic sheet, a small foam column is installed along the diameter of the foam transmission shaft, a laser transmitter is installed at one end of the small foam column facing the laser receiving plate, and a foam scaler is installed at one end of the small foam column facing the scale.

[0011] The plastic sheet is placed on the upper part of the cylindrical barrel, and the lower part of the plastic sheet is completely in contact with the circumference of the cylindrical barrel. The thickness of the plastic sheet is 1-2 mm; the inner diameter of the cylindrical barrel is 40-50 mm, and the height is 40-50 mm.

[0012] The interval between adjacent curved trusses is 150~200mm. By designing multiple groups of curved trusses and configuring foam transmission shafts respectively, for the same material and the same ratio, multiple groups can be measured at the same time to improve their accuracy; for different materials and different ratios (or the same ratio), multiple groups can be measured at the same time to intuitively see the difference in expansion height between different materials and ratios; the design of multiple groups can be measured at the same time to improve accuracy and achieve the effect of comparison between groups.

[0013] The foam scaler is in a rhombus shape, is composed of foam, and is bonded to one end of a small foam column.

[0014] The distance between the laser receiving plate and the laser transmitter is 40-50 mm.

[0015] The foam transmission shaft has a diameter of 10 mm and a height of 350 mm; the density is less than 0.1 g / cm 3 ;

[0016] The foam transmission shaft passes through the circular holes on the upper and lower surfaces of the rectangular frame, and the circular holes limit the plane movement of the foam transmission shaft and only allow axial movement;

[0017] The small foam column is bonded at a distance of 250-270 mm from the lower end of the transmission shaft.

[0018] The measuring method of the device is specifically as follows:

[0019] During measurement, the expanding filling material is placed in a cylindrical barrel and scraped flat, the cylindrical barrel is placed in the specimen carrying device, the plastic sheet is placed in the center of the specimen structure, and the laser transmitter is turned on. As the filling material expands over time, the foam drive shaft is pushed upward, and the foam scale and laser transmitter move accordingly. The expansion height is directly read through the foam scale, and the laser receiver is connected to the computer to record the moving distance of the laser transmitter in real time, and the expansion of the filling material in real time.

[0020] When the expansion filling material is placed in the cylindrical barrel, it should be shaken slightly to ensure that the material is evenly dispersed in the cylindrical barrel.

[0021] During the leveling process, the upper surface of the expansion filling material in the cylindrical barrel should be scraped until it is parallel to the barrel opening without any depression or protrusion.

[0022] Before the laser transmitter is turned on, the laser transmitter and the foam scale are fixed at the 0 scale mark of the scale.

[0023] The direct measurement part is used to read the readings directly and intuitively. For measurements of a fixed time period (such as 5 minutes, 10 minutes, 1 hour, etc.), the readings can be read directly and intuitively, and the expansion difference of different materials or ratios can be intuitively seen. The laser measurement part is used to record the expansion height in real time and draw a curve of the change of expansion height over time.

[0024] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least:

[0025] The above scheme can directly measure the expansion height of the filling material and monitor the expansion of the filling material in real time. At the same time, the multi-axis joint measurement device can simultaneously measure the expansion of multiple groups of expansion materials with different materials or different proportions, thereby achieving the effect of reducing errors in the same group and significantly comparing different groups. It has extremely high application value in the expansion rate testing of mine filling expansion materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic structural diagram of a multi-axis joint measurement device for expansion rate of filling materials provided by an embodiment of the present invention;

[0028] Figure 2 It is a front view of a multi-axis joint measurement device for expansion rate of filling materials provided by an embodiment of the present invention;

[0029] Figure 3 It is a left view of a multi-axis joint measurement device for expansion rate of filling materials provided by an embodiment of the present invention;

[0030] Figure 4 It is a top view of a device for multi-axis joint measurement of expansion rate of filling materials provided by an embodiment of the present invention;

[0031] Figure 5 It is a schematic diagram of the composition of the foam transmission shaft in the device of the present invention;

[0032] Figure 6 yes Figure 5 Top view of the foam drive shaft;

[0033] Figure 7 yes Figure 5 Left view of the foam drive shaft;

[0034] Figure 8 yes Figure 5 Front view of the foam drive shaft.

[0035] Among them: 1- curved truss; 2- base; 3- specimen carrying device; 4- cylindrical barrel; 5- plastic sheet; 6- foam transmission shaft; 7- small foam column; 8- scale; 9- foam scaler; 10- laser transmitter; 11- laser receiving board. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is described below in conjunction with the accompanying drawings.

[0037] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "example" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "example" is intended to present the concept in a specific way. In addition, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or it can be either of the two.

[0038] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0039] The embodiment of the present invention provides a multi-axis joint measurement device and method for measuring the expansion rate of filling materials. Figure 1 , Figure 2 , Figure 3 and Figure 4 The multi-axis joint measurement device for filling material expansion rate shown in the figure includes a frame structure, a measurement structure and a test piece structure.

[0040] The frame mechanism includes a curved truss 1, a base 2 and a specimen carrying device 3.

[0041] The measuring structure includes a plastic sheet 5, a foam transmission shaft 6, a direct measuring part and a laser measuring part. The direct measuring part includes a foam scaler 9 and a scale 8. The laser measuring part includes a laser transmitter 10 and a laser receiving board 11.

[0042] The specimen structure is a cylindrical barrel 4;

[0043] Three groups of curved trusses are installed on the base at equal intervals, and the lower side of each group of curved trusses is fixedly connected to a specimen carrying device corresponding to the side of the base, and a cylindrical barrel is placed in the specimen carrying device;

[0044] The lower end of the curved truss 1 is fixedly mounted on the base 2, a rectangular parallelepiped frame is fixed to the front end of the curved truss 1 elbow, a laser receiving plate 11 is mounted on one side of the rectangular parallelepiped frame close to the curved truss 1, and a scale 8 is mounted on the opposite side of the laser receiving plate 11;

[0045] like Figure 5 , Figure 6 Figure 7 and Figure 8 A foam transmission shaft 6 is bonded to the center of the upper part of the plastic sheet 5, a small foam column 7 is installed along the diameter of the foam transmission shaft 6, a laser transmitter 10 is installed on one end of the small foam column 7 facing the laser receiving plate 11, and a foam scaler 9 is installed on one end of the small foam column 7 facing the scale 8.

[0046] The plastic sheet is placed on the upper part of the cylindrical barrel, and the lower part of the plastic sheet is completely in contact with the circumference of the cylindrical barrel.

[0047] The foam scaler is in a rhombus shape, is composed of foam, and is bonded to one end of a small foam column.

[0048] In the actual design, the plastic sheet is made of PVC sheet, with a thickness of 2mm, a round shape, a diameter of 50mm, and is placed on the upper part of the cylindrical barrel. The lower part is completely fitted with the cylinder. The upper part of the plastic sheet is bonded to the foam drive shaft with 502 glue. The foam drive shaft is made of foam and has a diameter of 1cm.

[0049] The scale is fixed on the curved truss by screw connection or by gel bonding, and the scale range is 1dm.

[0050] The diameter of the small foam column is 1 cm.

[0051] The laser receiving board is fixed on the curved truss, which has a length of 1dm and a center parallel to the center of the scale. It is fixed by screws or by 502 glue.

[0052] The cylindrical barrel has no cover, an inner diameter of 50 mm, a height of 50 mm, and a thickness of 3 mm, and is placed on a specimen carrying device.

[0053] During actual measurement, place the expansion filling material in a cylindrical barrel and gently vibrate the barrel to make the filling material spread evenly, then scrape the upper end surface of the filling material in the cylindrical barrel flat until it is flush with the upper mouth of the cylindrical barrel;

[0054] Place the cylindrical barrel in the specimen holding device, place the plastic sheet in the center of the specimen structure so that the plastic sheet just completely covers the filling material, move the small foam column, and adjust the laser transmitter and foam scale to the 0 scale mark.

[0055] Turn on the laser transmitter. When the filling material expands over time, it pushes the foam drive shaft upward, and the foam scaler and laser transmitter move accordingly. Record the position of the foam scaler every 2 minutes within the first 10 minutes, then measure it every 10 minutes within 1 hour, and finally measure it every 1-3 hours until the position of the foam scaler or the laser receiver remains unchanged.

[0056] The recorded results are converted into expansion rate, and the changes in expansion rate are observed through a laser receiver.

[0057] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A multi-axis joint measurement device for expansion rate of filling materials, characterized in that: Including the frame structure, measurement structure and specimen structure, The frame mechanism includes a curved truss, a base and a specimen bearing device. The measuring structure includes a plastic sheet, a foam transmission shaft, a direct measuring part and a laser measuring part. The direct measuring part includes a foam scaler and a scale. The laser measuring part includes a laser transmitter and a laser receiving board. The specimen structure is a cylindrical barrel; At least two groups of curved trusses are installed on the base at equal intervals, and a specimen carrying device is fixedly connected to the corresponding side of the base under each group of curved trusses, and a cylindrical barrel is placed in the specimen carrying device; The lower end of each set of curved trusses is fixedly mounted on the base, a rectangular frame is fixed at the front end of the elbow of each set of curved trusses, a laser receiving plate is mounted on one side of the rectangular frame close to the curved truss, and a scale is mounted on the side opposite to the laser receiving plate; A foam transmission shaft is bonded to the center of the upper part of the plastic sheet, a small foam column is installed along the diameter of the foam transmission shaft, a laser transmitter is installed at one end of the small foam column facing the laser receiving plate, and a foam scaler is installed at one end of the small foam column facing the scale.

2. The multi-axis joint measurement device for filling material expansion rate according to claim 1 is characterized in that: The interval between adjacent curved trusses is 150-200 mm.

3. The multi-axis joint measurement device for filling material expansion rate according to claim 1, characterized in that: The plastic sheet is placed on the upper part of the cylindrical barrel, and the lower part of the plastic sheet is completely in contact with the circumference of the cylindrical barrel; The thickness of the plastic sheet is 1-2 mm; the inner diameter of the cylindrical barrel is 40-50 mm, and the height is 40-50 mm.

4. The multi-axis joint measurement device for filling material expansion rate according to claim 1, characterized in that: The foam scaler is in a rhombus shape, is composed of foam, and is bonded to one end of a small foam column.

5. The multi-axis joint measurement device for filling material expansion rate according to claim 1, characterized in that: The distance between the laser receiving plate and the laser transmitter is 40-50 mm.

6. The multi-axis joint measurement device for filling material expansion rate according to claim 1, characterized in that: The foam transmission shaft has a diameter of 10 mm and a height of 350 mm; the density is less than 0.1 g / cm 3 ; The foam transmission shaft passes through the circular holes on the upper and lower surfaces of the rectangular frame, and the circular holes limit the plane movement of the foam transmission shaft and only allow axial movement; The small foam column is bonded at a distance of 250-270 mm from the lower end of the transmission shaft.

7. The method for measuring the expansion rate of filling materials by a multi-axis joint measurement device according to claim 1, characterized in that: During measurement, the expanding filling material is placed in a cylindrical barrel and scraped flat, the cylindrical barrel is placed in the specimen carrying device, the plastic sheet is placed in the center of the specimen structure, and the laser transmitter is turned on. As the filling material expands over time, the foam drive shaft is pushed upward, and the foam scale and laser transmitter move accordingly. The expansion height is directly read through the foam scale, and the laser receiver is connected to the computer to record the moving distance of the laser transmitter in real time, and the expansion of the filling material in real time.

8. The method for measuring the expansion rate of filling materials by a multi-axis joint measurement device according to claim 7, characterized in that: When the expansion filling material is placed in the cylindrical barrel, it should be shaken slightly to ensure that the material is evenly dispersed in the cylindrical barrel.

9. The method for measuring the expansion rate of filling materials by a multi-axis joint measurement device according to claim 7, characterized in that: During the leveling process, the upper surface of the expansion filling material in the cylindrical barrel should be scraped until it is parallel to the barrel opening without any depression or protrusion.

10. The method for measuring the expansion rate of filling materials by a multi-axis joint measurement device according to claim 7, characterized in that: Before the laser transmitter is turned on, the laser transmitter and the foam scale are fixed at the 0 scale mark of the scale.

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