A force measuring steel bar meter

Abstract

The present invention discloses a force measuring steel bar meter, including a wrapped steel bar and an inner rod steel bar, one end of the wrapped steel bar is provided with an opening, the other end of the wrapped steel bar is a closed structure, the inner rod steel bar is adapted to the opening, and the inner rod steel bar is threadedly connected to the opening, one end of the inner rod steel bar is provided with a wire outlet hole, the other end of the inner rod steel bar is a closed structure, and the inner rod steel bar is provided with an installation cavity, the installation cavity is connected with the wire outlet hole, a sensor is installed in the installation cavity, and the lead wire of the sensor is led out through the wire outlet hole. The present invention embeds the sensor into the steel bar, avoiding damage to the sensor when vibrating concrete, and the sensor is limited in the installation cavity and will not slip along the longitudinal direction of the steel bar, ensuring that the force of the sensor and the wrapped steel bar is coordinated and consistent, can more accurately reflect the stress of the steel bar, improve the measurement accuracy, and adopt an integral wrapped steel bar to reduce the damage to the integrity of the steel bar, its torsion resistance, bending resistance and folding resistance are improved, and the durability of the sensor can be increased.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, in particular to a force measuring steel bar meter. Background Art

[0002] In the mechanical property test of reinforced concrete structure, it is necessary to measure the stress of the steel bar and study the variation law of the stress of the steel bar along its length. The most common method is to directly stick the strain sensor on the surface of the steel bar for measurement. This method has the following shortcomings: (1) The sensor is directly stuck on the surface of the steel bar, which is easy to be damaged when vibrating the concrete; (2) Under the condition of large force, relative slip will occur between the steel bar and the concrete, and the sensor may be partially displaced, so the measured value cannot accurately reflect the stress of the steel bar; (3) When the external concrete is poured, water will seep around the sensor, affecting the durability of the sensor. Summary of the invention

[0003] The purpose of the present invention is to provide a force measuring steel bar meter to solve the problems existing in the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A force measuring steel bar meter comprises a wrapped steel bar and an inner rod steel bar, wherein one end of the wrapped steel bar is provided with an opening, and the other end of the wrapped steel bar is a closed structure, the inner rod steel bar is adapted to the opening, and the inner rod steel bar is threadedly connected to the opening, one end of the inner rod steel bar is provided with a wire outlet hole, and the other end of the inner rod steel bar is a closed structure, and an installation cavity is provided in the inner rod steel bar, the installation cavity is connected with the wire outlet hole, a sensor is installed in the installation cavity, and the lead wire of the sensor is led out through the wire outlet hole.

[0006] The present invention avoids damage to the sensor when vibrating concrete by embedding the sensor inside the steel bar. The sensor is limited in the installation cavity and will not slip along the longitudinal direction of the steel bar. The connection is reliable, which ensures that the force of the sensor and the wrapped steel bar is coordinated and consistent, and can more accurately reflect the stress of the steel bar, thereby improving the measurement accuracy.

[0007] Furthermore, the inner rod steel bar of the present invention is placed inside the wrapped steel bar, and the outer wall of the wrapped steel bar is still an integral structure, which reduces the damage to the integrity of the steel bar, improves its torsion resistance, bending resistance and flexure resistance, and can prevent water from penetrating into the steel bar during concrete pouring, thereby increasing the durability of the sensor. The wrapped steel bar and the inner rod steel bar of the present invention are threadedly connected to ensure that the two parts are tightly connected.

[0008] As a preferred solution of the present invention, the opening is a circular hole.

[0009] As a preferred solution of the present invention, the opening is provided with an internal thread, and the inner rod reinforcement is provided with a matching external thread.

[0010] As a preferred solution of the present invention, the wire outlet hole and the installation cavity are both arranged along the axial direction of the inner rod reinforcement.

[0011] As a preferred solution of the present invention, the sensor is arranged along the axial direction of the inner steel bar.

[0012] As a preferred solution of the present invention, one side of the installation cavity is connected to the side wall of the inner steel bar, so that it is convenient to install the sensor from the through opening.

[0013] As a preferred solution of the present invention, both sides of the installation cavity are connected to the side walls of the inner steel bar, so that it is convenient to install the sensor from the through opening.

[0014] As a preferred solution of the present invention, the sensor is pasted, welded, or fixed in the installation chamber through a socket to ensure that the sensor is tightly connected to the installation cavity.

[0015] The invention also discloses an assembly method of a force measuring steel bar meter, comprising the following steps:

[0016] Step 1: Fix the sensor in the installation cabin and lead the lead wire of the sensor out from the lead hole;

[0017] Step 2: Screw the inner rod steel bar into the wrapped steel bar and tighten it.

[0018] The assembly method described in the present invention is simple to operate, and the inner rod steel bar can be directly adapted to wrapped steel bars of different sizes. The inner rod steel bar can be made into standard parts for batch production, which greatly simplifies the production process of the force measuring steel bar meter.

[0019] As a preferred embodiment of the present invention, in the step 1, the sensor is installed through the through-opening between the installation cavity and the side wall of the inner steel bar.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] 1. The present invention avoids damage to the sensor when vibrating concrete by embedding the sensor inside the steel bar. The sensor is limited in the installation cavity and will not slip along the longitudinal direction of the steel bar. The connection is reliable, ensuring that the force of the sensor and the wrapped steel bar is coordinated and consistent, which can more accurately reflect the stress of the steel bar and improve the measurement accuracy.

[0022] 2. Furthermore, the inner rod steel bar of the present invention is placed inside the wrapped steel bar, and the outer wall of the wrapped steel bar is still an integral structure, which reduces the damage to the integrity of the steel bar, improves its torsion resistance, bending resistance and flexure resistance, and can prevent water from penetrating into the steel bar during concrete pouring, thereby increasing the durability of the sensor. The wrapped steel bar and the inner rod steel bar of the present invention are threadedly connected to ensure that the two parts are tightly connected.

[0023] 3. The assembly method described in the present invention is simple to operate, and the inner rod steel bar can be directly adapted to wrapped steel bars of different sizes. The inner rod steel bar can be made into standard parts for batch production, which greatly simplifies the production process of the force measuring steel bar meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a vertical cross-sectional view of the force measuring steel bar meter described in Example 1 of the present invention.

[0025] Figure 2 It is a left view of the force measuring steel bar meter described in Example 1 of the present invention.

[0026] Figure 3 It is a right view of the force measuring steel bar meter described in Example 1 of the present invention.

[0027] Figure 4 It is a horizontal cross-sectional view of the force measuring steel bar meter described in Example 1 of the present invention.

[0028] Figure 5 yes Figure 4 aa section view in.

[0029] Figure 6 It is a schematic diagram of the structure of the wrapped steel bar described in Example 1 of the present invention (the internal thread is not shown).

[0030] Figure 7 It is a vertical cross-sectional view of the wrapped steel bar described in Example 1 of the present invention.

[0031] Figure 8 It is a schematic structural diagram of the inner rod steel bar described in Example 1 of the present invention (external threads not shown).

[0032] Fig. 9 It is a vertical cross-sectional view of the inner steel bar described in Example 1 of the present invention.

[0033] Fig.10 It is a horizontal cross-sectional view of the inner steel bar described in Example 1 of the present invention.

[0034] Fig.11 It is a horizontal cross-sectional view of the force measuring steel bar meter described in Example 2 of the present invention.

[0035] Fig.12 yes Fig.11 bb cross-sectional view in.

[0036] Fig.13 It is a schematic structural diagram of the inner rod steel bar described in Example 2 of the present invention (external threads not shown).

[0037] Fig.14 It is a vertical cross-sectional view of the inner rod reinforcement described in Example 2 of the present invention.

[0038] Fig.15 It is a horizontal cross-sectional view of the inner steel bar described in Example 2 of the present invention.

[0039] Icon: 1-wrapped steel bar, 11-opening, 12-internal thread, 2-inner rod steel bar, 21-wire outlet hole, 22-installation cavity, 23-external thread, 3-sensor, 4-lead. DETAILED DESCRIPTION

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] Example 1

[0043] like Figure 1-Figure 5 As shown, a force measuring steel bar meter comprises a wrapped steel bar 1, an inner steel bar 2, a sensor 3 and a lead wire 4. The inner steel bar 2 is placed in the wrapped steel bar 1, and the inner steel bar 2 is threadedly connected to the wrapped steel bar 1, the sensor 3 is placed in the inner steel bar 2, and the lead wire 4 of the sensor 3 is led out from one end of the inner steel bar 2.

[0044] like Figure 6-Figure 7 As shown, one end of the wrapped steel bar 1 is provided with an opening 11 , and the opening 11 is a circular hole. The other end of the wrapped steel bar 1 is a closed structure, and the opening 11 is provided with an internal thread 12 .

[0045] like Figure 8-Figure 10 As shown, the inner rod steel bar 2 is adapted to the opening 11, and the inner rod steel bar 2 is provided with an adapted external thread 23, one end of the inner rod steel bar 2 is provided with a wire outlet hole 21, the other end of the inner rod steel bar 2 is a closed structure, and an installation cavity 22 is provided in the inner rod steel bar 2, the installation cavity 22 is connected with the wire outlet hole 21, a sensor 3 is installed in the installation cavity 22, and the lead 4 of the sensor 3 is led out through the wire outlet hole 21.

[0046] The outlet hole 21 and the installation cavity 22 are sequentially arranged along the axial direction of the inner rod steel bar 2, and the sensor 3 is also arranged along the axial direction of the inner rod steel bar 2. Further, in order to facilitate the installation of the sensor 3, one side of the installation cavity 3 is connected with the side wall of the inner rod steel bar 2. The sensor 3 is pasted, welded, or fixed in the installation chamber 22 through a socket to ensure that the sensor 3 does not slip in the installation cavity 3.

[0047] Example 2

[0048] like Figure 11-Figure 15 As shown, the difference between this embodiment and embodiment 1 is that both sides of the installation cavity 22 are connected with the side walls of the inner rod reinforcement 2.

[0049] Example 3

[0050] A method for assembling a force measuring steel bar meter, assembling a force measuring steel bar meter as described in Example 1 or Example 2, comprising the following steps:

[0051] Step 1: Fix the sensor 3 in the installation chamber 22 through the through-hole between the installation chamber 22 and the side wall of the inner rod steel bar 2. The sensor 3 is fixed in the installation chamber 22 by pasting, welding, or by a holder, and the lead wire 4 of the sensor 3 is led out from the outlet hole 21.

[0052] Step 2: Screw the inner rod steel bar 2 into the wrapped steel bar 1 and tighten it.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A force measuring steel bar meter, characterized in that: The invention comprises a wrapped steel bar (1) and an inner steel bar (2), wherein one end of the wrapped steel bar (1) is provided with an opening (11), and the other end of the wrapped steel bar (1) is a closed structure, the inner steel bar (2) is matched with the opening (11), and the inner steel bar (2) is threadedly connected to the opening (11), one end of the inner steel bar (2) is provided with a wire outlet hole (21), and the other end of the inner steel bar (2) is a closed structure, and the inner steel bar (2) is provided with a mounting cavity (22), the mounting cavity (22) is connected with the wire outlet hole (21), a sensor (3) is mounted in the mounting cavity (22), and a lead wire (4) of the sensor (3) is led out through the wire outlet hole (21), the force of the sensor (3) and the wrapped steel bar (1) are coordinated and consistent, the opening (11) is a circular hole, and the wire outlet hole (21) and the mounting cavity (22) are both arranged along the axial direction of the inner steel bar (2).

2. A force measuring steel bar meter according to claim 1, characterized in that: The opening (11) is provided with an internal thread (12), and the inner rod steel bar (2) is provided with a matching external thread (23).

3. A force measuring steel bar meter according to claim 1, characterized in that: The sensor (3) is arranged along the axial direction of the inner steel bar (2).

4. A force measuring steel bar meter according to any one of claims 1 to 3, characterized in that: One side of the installation cavity (22) is connected to the side wall of the inner rod steel bar (2).

5. A force measuring steel bar meter according to any one of claims 1 to 3, characterized in that: Both sides of the installation cavity (22) are connected to the side walls of the inner rod steel bar (2).

6. A force measuring steel bar meter according to any one of claims 1 to 3, characterized in that: The sensor (3) is pasted, welded, or fixed in the installation cavity (22) via a socket.

7. A method for assembling a force measuring steel bar meter, characterized in that: Assembling a force measuring steel bar meter as claimed in any one of claims 1 to 6 comprises the following steps: Step 1: fixing the sensor (3) in the installation chamber (22), and leading the lead wire (4) of the sensor (3) out from the lead hole (21); Step 2: Screw the inner steel bar (2) into the wrapped steel bar (1) and tighten it.

8. The assembly method of a force measuring steel bar meter according to claim 7, characterized in that: In the step one, the sensor (3) is installed through the through opening between the installation cavity (22) and the side wall of the inner steel bar (2).

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