Sprayed concrete thickness control and measurement tool

Abstract

The utility model belongs to the technical field of building construction, and particularly relates to a sprayed concrete thickness control and measurement tool which comprises an anchoring nail used for being anchored at a measurement position of a base layer before concrete spraying; the column body is connected with the exposed end of the anchoring nail after the anchoring nail is anchored; the thickness identification disc is connected to the periphery of the column body, can move in the axis direction of the column body and is fixed in position. The thickness identification disc can move in the axis direction of the column body and can be fixed in position, and the thickness identification disc can be adjusted according to the designed concrete thickness, so that sprayed concrete construction of different thicknesses can be monitored.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of building construction, specifically relates to a kind of sprayed concrete thickness control and measuring tool. BACKGROUND

[0002] In slope support engineering, sprayed concrete operation is often carried out, cement mortar is sprayed onto the base layer to coagulate and harden, and rapid support is achieved after reaching a certain strength.

[0003] After construction is completed, the thickness measurement of sprayed concrete is an important indicator for testing project qualification. Currently, after the concrete solidifies, a core hole is drilled in the concrete layer, and a steel bar is inserted into the hole for measurement. Drilling a large hole after the concrete solidifies is time-consuming and labor-intensive, and it is difficult and risky to drill a hole on a slope.

[0004] Moreover, inserting a steel bar into the hole for thickness identification requires high insertion depth, and thickness control is prone to errors.

[0005] Moreover, even after the inserted steel bar is removed, it is difficult to apply it to other construction needs, resulting in material waste. INVENTION CONTENTS

[0006] To solve the above problems, the present application provides a kind of sprayed concrete thickness control and measuring tool, which can monitor the thickness of sprayed concrete during spraying construction and measure the thickness of concrete using the hole of anchor nail after construction is completed.

[0007] The technical solutions adopted are as follows:

[0008] A kind of sprayed concrete thickness control and measuring tool, comprising:

[0009] An anchor nail is used to anchor in the measurement position of the base layer before concrete spraying;

[0010] A column is connected to the exposed end of the anchor nail after anchoring;

[0011] A thickness identification disc is connected to the outer periphery of the column and can move along the axis direction of the column and fix the position.

[0012] Optionally, the exposed end of the anchor nail is connected to the column through threads, and after connection, the end plane of the column contacts the base layer.

[0013] Optionally, the exposed end of the anchor nail is connected to the column through threads, and after connection, the end plane of the column contacts the base layer.

[0014] Optionally, the exposed end of the anchor nail is connected to the column through threads, and after connection, the end plane of the column contacts the base layer.

[0015] Optionally, the thickness identification disc is a flat ring, which is connected to the outer periphery of the column by screw thread.

[0016] Optionally, a dismounting bolt is further provided, which is fixedly connected to the end of the column away from the anchor nail.

[0017] Optionally, a scale is provided on the column.

[0018] Optionally, the distance between the thickness identification disc and the end plane of the column for connecting with the anchor nail is the same as the designed concrete thickness.

[0019] The present application has the following beneficial effects:

[0020] (1) The position of the thickness identification disc can be adjusted according to the designed concrete thickness, so as to monitor the construction of the sprayed concrete with different thicknesses.

[0021] (2) The anchor nail is driven into the base layer before the concrete is sprayed, the anchor nail is connected with the column by screw thread, the column can be screwed out of the concrete surface by rotating the column, and then the concrete thickness can be measured, thereby avoiding the construction difficulty of drilling and punching after the concrete is solidified.

[0022] (3) Except the anchor nail, other components can be reused, thereby reducing material waste. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above features and technical advantages of the present application will become more apparent and easier to understand through the following description of its embodiments in conjunction with the accompanying drawings.

[0024] Figure 1 It is a perspective view of the sprayed concrete thickness control and measurement tool according to the present application.

[0025] Figure 2 It is a side view of the sprayed concrete thickness control and measurement tool according to the present application.

[0026] Figure 3 It is a schematic view of the column end plane contacting the base layer.

[0027] Figure 4 It is a schematic view of the plug-in connection between the column and the anchor nail. Figure 1 .

[0028] Figure 5 It is a schematic view of the plug-in connection between the column and the anchor nail. Figure 2 .

[0029] The component marks in the drawings are as follows:

[0030] 1: dismounting bolt 2: thickness identification disc

[0031] 3: main body 4: anchor nail

[0032] 31: insertion hole 41: insertion rod

[0033] 5: base layer DETAILED DESCRIPTION

[0034] The embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art can appreciate that the described embodiments can be modified in various ways or combinations without departing from the spirit and scope of the present application. Therefore, the drawings and the description are illustrative in nature and are not intended to limit the scope of protection of the claims. In addition, in the present specification, the drawings are not drawn to scale, and the same reference numerals represent the same parts.

[0035] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood broadly, for example, "connecting" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium. Among them, "fixed connection" means that the relative position relationship after connection is unchanged. "Rotary connection" means that the relative rotation after connection is connected. The orientation language mentioned in the embodiments of the present application, such as "upper", "lower", "inner", "outer" and the like, is only the direction of the drawings, therefore, the orientation language used is for better, clearer description and understanding of the embodiments of the present application, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application. Among them, the integrated structure of two components obtained by one-piece forming process means that, in the process of forming one of the two components, the component is connected with the other component together, without the need to connect the two components together by reprocessing (such as bonding, welding, buckle connection, screw connection) method.

[0036] The present embodiment provides a kind of thickness control and measuring tool of shotcrete, as shown in Figure 1 、 Figure 2 It includes anchor nail 4 for anchoring in the measuring position of base layer before shotcrete, column 3 is connected with the exposed end of anchor nail 3 after anchor nail is anchored in the measuring position of base layer, thickness identification disc 2 is installed in the outer periphery of column 3, and can be moved and fixed position along the axis direction of column 3. To increase the strength of tool, anchor nail, column 3 and thickness identification disc 2 can be made of steel material.

[0037] One end of the anchor nail has a pointed end, and the anchor nail can be hammered into the measuring position of the base layer. The end of the anchor nail exposed outside the base layer (exposed end) can have external threads, and one end of the column 3 can have internal threads, and the column 3 can be connected to the exposed end of the anchor nail 4 by screwing the internal threads with the external threads.

[0038] However, the present embodiment does not limit the connection method of the column 3 and the anchor nail 4, and can also be connected by, for example, a snap connection, a plug-in connection. The snap connection is a conventional technical means, which will not be described here. The plug-in connection refers to the exposed end of the anchor nail 4 being made longer, so that the exposed end can be inserted into the column 3 for a longer distance, so that the anchor nail and the column 3 can be reliably connected. Of course, the plug-in connection requires the anchor nail to be inserted to the deepest part of the column 3, so as to prevent insufficient insertion depth from causing changes in the positional relationship with the base layer. Moreover, after the insertion rod 41 is inserted into the insertion hole 31, the end plane of the column 3 for connecting with the anchor nail should be in contact with the base layer. Specifically, as shown in Figure 4 the insertion hole 31 is provided on the column 3, the exposed end of the anchor nail 4 has an insertion rod 41, and the insertion rod 41 is not fully inserted into the insertion hole 31, so that the end plane of the column 3 is not in contact with the base layer, which is not convenient for measuring and judging the thickness of the concrete. Figure 5 The insertion rod 41 is fully inserted into the insertion hole 31, and the end plane of the column 3 is in contact with the base layer, which can be used to measure and judge the thickness of the concrete. However, it is still preferred to use a threaded connection to connect the anchor nail and the column 3.

[0039] The thickness identification disc can be a planar ring, which is sleeved on the outer periphery of the column 3. The thickness identification disc can be connected to the outer periphery of the column 3 by a threaded connection. However, the present application does not limit the connection method, as long as it can move and fix the position along the axis direction of the column 3. For example, the thickness identification disc can have a protrusion, and a sliding groove is provided on the outer periphery of the column 3 along the axis direction, and the protrusion is embedded in the sliding groove, so that the thickness identification disc can move along the axis direction.

[0040] In addition, the present application also does not limit the thickness identification disc to be a planar ring, which can also be installed in a sliding groove along the axis direction of the column 3, and the position is changed by moving along the sliding groove. Specifically, the thickness identification disc can have a protrusion, and a sliding groove is provided on the outer periphery of the column 3 along the axis direction, and the protrusion is embedded in the sliding groove, so that the thickness identification disc can move along the axis direction.

[0041] Moreover, the sliding groove can be provided with a groove bottom which is smaller than the width of the groove opening, and after the thickness identification disc is moved into position, the protrusion of the thickness identification disc is clamped by the narrower width of the groove bottom by pushing the thickness identification disc towards the groove bottom, so that the position of the thickness identification disc can be temporarily fixed.

[0042] In the measurement, the distance between the thickness identification disc and the end plane of the column 3 for connecting with the anchor nail 4 should be the same as the designed concrete thickness, and the end plane of the column 3 for connecting with the anchor nail 4 should be in contact with the base layer 5.

[0043] In some embodiments, the dismounting bolt 1 and the column 3 can be integrally formed, and the preferred dismounting bolt is hexagonal bolt shape. The column 3 can be rotated out of the exposed end of the anchor nail by rotating the dismounting bolt with a wrench, so that the column 3 is disconnected from the anchor nail.

[0044] In some embodiments, a scale can be provided on the column.

[0045] The following describes the use method of the sprayed concrete thickness control and measurement tool,

[0046] Step S1, the position of the thickness identification disc is adjusted according to the thickness of the sprayed concrete layer in the design drawing. Specifically, for example, if the thickness of the sprayed concrete layer in the drawing is 100 mm, the thickness identification disc can be rotated so that the distance between the thickness identification disc and the end plane of the one end of the column 3 for connecting with the anchor nail is 100 mm. For example, if the thickness of the sprayed concrete layer in the drawing is 50 mm, the thickness identification disc can be rotated so that the distance between the thickness identification disc and the end plane of the one end of the column 3 for connecting with the anchor nail is 50 mm. The distance between the thickness identification disc and the end plane of the one end of the column 3 for connecting with the anchor nail is the distance for controlling the thickness of the sprayed concrete layer.

[0047] Step S2, the anchor nail is nailed to the measurement position of the base layer with a hammer. The anchor nail is hit by the hammer so that the sharp end of the anchor nail is embedded into the base layer, and the exposed end of the anchor nail for connecting with the column 3 is exposed outside the base layer.

[0048] Step S3, the one end of the column 3 for connecting with the anchor nail is connected and tightened with the anchor nail. As shown in the figure, the threaded end of the column 3 is screwed to the end plane of the one end for connecting with the anchor nail, so that the column 3 is in contact with the base layer. Thus, the distance between the base layer and the thickness identification disc is the thickness of the sprayed concrete layer in the design drawing. Figure 3

[0049] Step S4, in the sprayed construction project, whether the construction thickness meets the standard is determined by observing the distance between the sprayed concrete surface and the thickness identification disc, so as to realize thickness control and realize the thickness control of the sprayed concrete construction process with different thicknesses.

[0050] ​Specifically, for example, the thickness of the sprayed concrete layer in the drawing is 100mm, the distance between the thickness identification disc and the base layer is 100mm, and if it is observed that the sprayed concrete layer is still away from the thickness identification disc during the spraying construction, it indicates that the designed thickness of the concrete layer has not been reached. The distance between the sprayed concrete layer and the thickness identification disc can also be read by the scale on the column 3.

[0051] In step S5, after the spraying construction is completed, the thickness of the sprayed concrete needs to be detected, the wrench is used to connect and disassemble the bolt 1, the column 3 is disconnected from the anchor nail 4, and the column 3 is screwed out of the concrete surface. Then, the hole depth left after the column 3 is screwed out is measured by using a measuring tool, and the thickness of the sprayed concrete is measured. The process of drilling and punching in the conventional thickness measurement is avoided. The tool has a simple structure and is convenient to operate.

[0052] The preferred embodiments of the utility model are described above, and are not used to limit the utility model. For those skilled in the art, the utility model can be changed and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A shotcrete thickness control and measurement tool, characterized by, Comprise: Anchoring nail, for anchoring in the measured position of the base layer before the shotcrete; Column, connected with the exposed end of the anchoring nail after the anchoring nail is anchored; Thickness identification disc, connected in the outer periphery of the column, and movable and fixed in position along the axis direction of the column.

2. The shotcrete thickness control and measurement tool according to claim 1, wherein the exposed end of the anchoring nail is connected with the column through screw thread, and after the connection, the end plane of the column is in contact with the base layer.

3. The shotcrete thickness control and measurement tool according to claim 1, wherein the exposed end of the anchoring nail is snap connected with the column, and after the connection, the end plane of the column is in contact with the base layer.

4. The shotcrete thickness control and measurement tool according to claim 1, wherein the exposed end of the anchoring nail is inserted with the column, and after the connection, the end plane of the column is in contact with the base layer.

5. The shotcrete thickness control and measurement tool according to claim 1, wherein the thickness identification disc is a flat ring, and is connected in the outer periphery of the column through screw thread.

6. The shotcrete thickness control and measurement tool according to claim 1, further comprising a dismounting bolt, which is fixedly connected in the end of the column away from the anchoring nail.

7. The shotcrete thickness control and measurement tool according to claim 5, wherein a scale is arranged on the column.

8. The shotcrete thickness control and measurement tool according to claim 5, wherein the distance between the thickness identification disc and the end plane of the column for connecting with the anchoring nail is the same as the designed thickness of the shotcrete. ​ ​ ​ ​ ​ ​ ​

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