A top tube backrest wall for monitoring pressure

Abstract

The utility model relates to pipeline pressure measurement technical field, and disclose a kind of monitoring pressure's pipe backrest wall, including the first pouring body and second pouring body for constituting backrest wall, first pouring body and second pouring body are symmetrically arranged, the front side of first pouring body is vertically and leans against pipeline, the center area between first pouring body and second pouring body is provided with strain gauge in four corners, strain gauge is used to measure the impact force size that fluid in pipeline exerts on backrest wall, when strain gauge is pasted in backrest wall, backrest wall is subjected to pressure from pipeline and can cause strain gauge to produce deformation, the outside of backrest wall is provided with mainboard controller, the output end of strain gauge is electrically connected with mainboard controller, and mainboard controller includes processor and signal transmitting module, the output end of signal transmitting module is connected display screen, display screen can display pressure reading, so that staff can quickly read the pressure reading of pipe, and then real-time adjust pipe stress state, prevent pipeline overload damage.

Description

Technical Field

[0001] This utility model relates to the field of pipeline pressure measurement technology, specifically to a jacking pipe back wall for monitoring pressure. Background Technology

[0002] In the construction of storm and sewage pipe jacking wells, traditional cast-in-place concrete backing serves as the core load-bearing structure for the pipe jacking reaction force. Cast-in-place backing requires a large amount of concrete, steel bars, and formwork materials, and necessitates on-site formwork erection, steel bar tying, pouring, and curing, resulting in a large amount of manual labor input. Each well location requires repeated pouring, and materials cannot be reused, leading to cumulative costs.

[0003] Traditional cast-in-place concrete backrests require extensive mechanical demolition after construction, generating a large amount of construction waste and incurring additional transportation and disposal costs. This does not align with the concept of green construction. Furthermore, traditional concrete backrests are fixed structures and cannot adjust the stress state of the jacking pipe in real time according to changes in jacking force during the jacking process. This can easily lead to local overload or structural deformation of the jacking pipe due to fluctuations in jacking force. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pressure monitoring back wall for jacking pipes, which solves the problem that traditional cast-in-place concrete back walls cannot obtain the stress status of jacking pipes in a timely manner.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a pressure monitoring pipe jacking back wall, comprising a first casting body and a second casting body for forming the back wall, wherein the first casting body and the second casting body are symmetrically arranged front and rear.

[0006] The front side of the first casting body is vertically against the pipe, and strain gauges are set at the four corners of the central area between the first casting body and the second casting body. The strain gauges are used to measure the magnitude of the impact force exerted by the fluid in the pipe on the back wall.

[0007] A mainboard controller is installed on the outside of the back wall, and the output end of the strain gauge is electrically connected to the mainboard controller.

[0008] Optionally, a pressure-distributing steel plate is provided between the first casting body and the pipeline. The pressure-distributing steel plate is adapted to the size of the first casting body and is fixed to the first casting body by mechanical bolts.

[0009] Optionally, the first and second cast-in-place bodies are provided with wire grooves that connect to the outside of the back wall at corresponding positions. The wire grooves are pre-embedded with conduits, and the strain gauges and the mainboard controller’s wires are adapted to be run through the conduits.

[0010] Optionally, the motherboard controller includes a processor and a signal transmission module, the output of which is connected to a display screen, which can display pressure readings.

[0011] Optionally, corresponding connecting filling grooves may be provided on the first and second casting bodies.

[0012] Optionally, steel mesh may be provided in both the first and second cast-in-place bodies.

[0013] Optionally, a hanging ring is fixed at the top of the back wall. The hanging ring is an inverted U-shape, and the two ends of the hanging ring are respectively tied to the steel mesh of the first and second cast-in-place bodies.

[0014] This utility model provides a pressure monitoring back wall for jacking pipes, which has the following beneficial effects:

[0015] This invention provides a pressure monitoring back wall for jacking pipes. Strain gauges are installed inside the back wall. When fluid impacts the back wall within the jacking pipe, the strain gauges deform, changing their resistance and transmitting an electrical signal to the main controller. The main controller processes the data and displays the pressure reading on a screen via a signal module. This allows workers to adjust the jacking pipe's stress state in real time when the jacking force changes. The strain gauges are clamped between a first and second cast-in-place body, which are connected by a filling groove to form a single unit. The strain gauge wires are pre-embedded in the back wall through conduits to prevent wear during casting. Additionally, a lifting ring is installed at the top of the back wall, allowing it to be hoisted to a suitable position as needed. This also facilitates the reuse of the back wall and improves construction efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Top view;

[0018] Figure 3 for Figure 1 Remove the front plan view of the first cast-in-place body;

[0019] Figure 4 yes Figure 1 A schematic diagram of the structure of the second casting body.

[0020] In the diagram: 1. First cast-in-place body; 2. Second cast-in-place body; 3. Pipeline; 4. Strain gauge; 5. Mainboard controller; 6. Pressure-distributed steel plate; 7. Mechanical bolt; 8. Display screen; 9. Lifting ring; 12. Conduit; 21. Reinforcing mesh; 102. Cable trough; 201. Filling trough. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] Please see Figures 1 to 4 This utility model provides a technical solution: a pressure monitoring pipe jacking back wall, comprising a first cast-in-place body 1 and a second cast-in-place body 2 forming the back wall. The first cast-in-place body 1 and the second cast-in-place body 2 are symmetrically arranged front and rear. The front side of the first cast-in-place body 1 vertically abuts against the pipe 3. Strain gauges 4 are arranged at the four corners of the central area between the first cast-in-place body 1 and the second cast-in-place body 2. The strain gauges 4 are used to measure the magnitude of the impact force exerted by the fluid in the pipe 3 on the back wall. When the strain gauges 4 are attached to the inside of the back wall, the pressure from the pipe 3 on the back wall causes the strain gauges 4 to deform, thereby changing the pressure. The resistance value of strain gauge 4 is determined using the Wheatstone bridge principle. When one of the four strain gauges 4 experiences strain, the bridge balance is broken, generating an output voltage corresponding to the resistance change. A mainboard controller 5 is installed on the outside of the back wall. The output of strain gauge 4 is electrically connected to the mainboard controller 5. The mainboard controller 5 includes a processor and a signal transmission module. The output of the signal transmission module is connected to the display screen 8, which displays the pressure reading. This allows workers to quickly read the pressure reading of the jacking pipe and adjust the stress state of the jacking pipe in real time to prevent overload damage to the pipe 3.

[0023] In this embodiment, as a preferred option, a pressure-distributing steel plate 6 is provided between the first casting body 1 and the pipe 3. The pressure-distributing steel plate 6 can transmit the pressure of the jacking pipe on the back wall and prevent the misalignment of the jacking pipe and the strain gauge 4 from causing errors in the pressure reading. The pressure-distributing steel plate 6 is fixed to the first casting body 1 by mechanical bolts 7. In order to reduce the waste of construction materials, the pressure-distributing steel plate 6 and the first casting body 1 are matched in size.

[0024] In this embodiment, as a preferred solution, the first casting body 1 and the second casting body 2 are provided with wire grooves 102 that connect to the outside of the back wall. The wire grooves 102 are pre-embedded with conduits 12. The wires of the strain gauge 4 and the main board controller 5 are adapted to be run through the conduits 12. First, the wires of the strain gauge 4 are protected by the conduits 12 to prevent the wires of the strain gauge 4 from being worn during the casting of the back wall, so as to ensure the normal function of the strain gauge 4. The method of clamping the strain gauge 4 with the first casting body 1 and the second casting body 2 is used instead of the method of directly pre-embedding the strain gauge 4, which can further protect the installation stability of the strain gauge 4.

[0025] In this embodiment, as a preferred option, the first casting body 1 and the second casting body 2 are respectively provided with matching and connected filling grooves 201. After the strain gauge 4 and its wires are installed, the first casting body 1 and the second casting body 2 are symmetrically merged front and back, and the filling grooves 201 that are matching and connected between the two are filled with concrete to form an integrated back wall.

[0026] In this embodiment, as a preferred option, steel mesh 21 is provided in both the first cast-in-place body 1 and the second cast-in-place body 2, and a lifting ring 9 is fixed at the top of the back wall to facilitate the subsequent hoisting of the back wall and to facilitate the turnover and placement of the back wall; the lifting ring 9 is an inverted U-shape, and the two ends of the lifting ring 9 are respectively tied to the steel mesh 21 of the first cast-in-place body 1 and the second cast-in-place body 2, which not only meets the hoisting requirements, but also further strengthens the connection between the first cast-in-place body 1 and the second cast-in-place body 2, ensuring that the formed back wall is integrally stable.

[0027] In this invention, the working steps of the device are as follows:

[0028] 1. Construct the first casting body 1 and the second casting body 2. Arrange 22mm diameter threaded steel bars horizontally and vertically at a spacing of 150mm. Tie the intersections with wire. Set up the filling groove 201 template. Leave the filling groove 201 after casting.

[0029] 2. Fix the strain gauge 4. Set the strain gauge 4 between the first cast body 1 and the second cast body 2. Make a wire groove 102 according to the position of the strain gauge 4. Fix the conduit 12 in the wire groove 102. The wire of the strain gauge 4 passes through the conduit 12 and is led out to the outside of the back wall.

[0030] 3. Embed the lifting ring 9, merge the first cast body 1 and the second cast body 2, tie the two ends of the lifting ring 9 to the steel mesh 21 of the first cast body 1 and the second cast body 2 respectively, and fill and pour C40 commercial concrete in the filling groove 201 that connects the two to form the back wall.

[0031] 4. Fix the steel plate by using mechanical bolts 7 to fix the steel plate to the first casting body 1, so that the steel plate is located between the first casting body 1 and the pipe 3;

[0032] 5. Connect the mainboard controller 5 and the display screen 8. Connect the wire of the strain gauge 4 to the input terminal of the mainboard controller 5. The mainboard controller 5 includes a processor and a signal transmission module. The output terminal of the signal transmission module is connected to the display screen 8.

[0033] The specific embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A pipe jacking backwall for monitoring pressure, characterised in that: It includes a first cast-in-place body (1) and a second cast-in-place body (2) for forming the back wall, and the first cast-in-place body (1) and the second cast-in-place body (2) are arranged symmetrically in front and behind; The front side of the first casting body (1) is vertically against the pipe (3). Strain gauges (4) are provided at the four corners of the central area between the first casting body (1) and the second casting body (2). The strain gauges (4) are used to measure the magnitude of the impact force exerted by the fluid in the pipe (3) on the back wall. The mainboard controller (5) is installed on the outside of the back wall, and the output end of the strain gauge (4) is electrically connected to the mainboard controller (5).

2. The pressure monitoring pipe jacking back wall according to claim 1, characterized in that: A pressure-distributing steel plate (6) is provided between the first casting body (1) and the pipe (3). The pressure-distributing steel plate (6) is adapted to the size of the first casting body (1). The pressure-distributing steel plate (6) is fixed on the first casting body (1) by mechanical bolts (7).

3. A pressure monitoring pipe jacking back wall according to claim 1 or 2, characterized in that: The first casting body (1) and the second casting body (2) are provided with a wire trough (102) connected to the outside of the back wall. The wire trough (102) is pre-embedded with a conduit (12). The wires of the strain gauge (4) and the main board controller (5) are adapted to be run through the conduit (12).

4. A pressure monitoring pipe jacking back wall according to claim 1 or 2, characterized in that: The motherboard controller (5) includes a processor and a signal transmission module. The output of the signal transmission module is connected to a display screen (8), which can display the pressure reading.

5. A pressure monitoring pipe jacking back wall according to claim 1 or 2, characterized in that: The first casting body (1) and the second casting body (2) are respectively provided with corresponding and connected filling grooves (201).

6. A pressure monitoring pipe jacking back wall according to claim 5, characterized in that: Steel mesh (21) is provided in both the first cast-in-place body (1) and the second cast-in-place body (2).

7. A pressure monitoring pipe jacking back wall according to claim 6, characterized in that: The top of the back wall is fixed with a hanging ring (9), which is an inverted U-shape. The two ends of the hanging ring (9) are respectively tied to the steel mesh (21) of the first cast body (1) and the second cast body (2).

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