Foundation pile hammering force monitoring device

Abstract

The utility model provides a foundation pile hammering force monitoring device which comprises a foundation pile 2 and a monitoring assembly 3. A mounting groove 21 is formed in the foundation pile 2, the mounting groove 21 comprises a fixed groove 22 and a sliding groove 23, and the fixed groove 22 is located below the sliding groove 23; the monitoring assembly 3 comprises a pressure sensor 31 and a stress cap 34, the pressure sensor 31 is contained in the inner space of the fixing groove 22, a spring 32 is arranged above the pressure sensor 31, spring seats 33 are arranged at the two ends of the spring 32, the spring 32 is vertically arranged, the spring seat 33 located on the lower portion is connected with the pressure sensor 31, the spring seat 33 located on the upper portion is connected with the stress cap 34, and the stress cap 34 is connected with the sliding groove 23 in a sliding mode. Meanwhile, the maximum impact force value is preset, when the impact force value exceeds the preset maximum value, the remote controller controls the alarm to start alarming, and the whole device stops running.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure monitoring, and particularly relates to a monitoring device for the hammering force of a cast-in-place pile foundation. Background Art

[0002] PHC pipe piles (prestressed pipe piles) are a type of pile foundation. During construction, large mechanical hammers are used to hammer the top of the pipe pile into the ground. As the pile body penetrates deeper into the formation under hammering, the frictional force between the side wall of the pile body and the formation gradually increases, so as to play the role of bearing the load as a pile foundation. During the construction of hammering pipe piles, it is necessary to measure and record the impact force of the mechanical hammer on the top of the pipe pile. On the one hand, by comparing the impact force value with the depth of single or multiple hammering penetrations, it is judged whether the bearing capacity of the pipe pile meets the design requirements. On the other hand, by checking the measured impact force value, the falling height of the impact hammer is adjusted to prevent damage to the pipe pile caused by excessive impact force. Therefore, a monitoring instrument that can measure the impact force of the impact hammer on the top of the pipe pile in real time is needed. Summary of the Utility Model

[0003] The utility model provides a monitoring device for the hammering force of a cast-in-place pile foundation, aiming to solve the problems raised in the background art.

[0004] The utility model is realized as follows: A monitoring device for the hammering force of a cast-in-place pile foundation includes a cast-in-place pile foundation and a monitoring assembly;

[0005] An installation groove is provided on the cast-in-place pile foundation, and the installation groove includes a fixed groove and a sliding groove, and the fixed groove is located below the sliding groove;

[0006] The monitoring assembly includes a pressure sensor and a force-bearing cap. The pressure sensor is accommodated in the internal space of the fixed groove. A spring is provided above the pressure sensor. Spring seats are provided at both ends of the spring. The spring is vertically arranged. The spring seat located below is connected to the pressure sensor, and the spring seat located above is connected to the force-bearing cap. The force-bearing cap is slidably connected to the sliding groove.

[0007] Preferably, the output end of the pressure sensor is connected to a data collector, and the data collector is connected to a remote controller.

[0008] Preferably, the remote controller is connected to an alarm.

[0009] Preferably, the alarm is an audible and visual alarm.

[0010] Preferably, the input end of the pressure sensor is connected to the spring seat located below.

[0011] Preferably, the force-bearing cap is of an inverted U-shaped structure, and the spring seat located above is connected to the bottom surface of the inner wall of the force-bearing cap.

[0012] Preferably, it further includes a mechanical hammer, which is arranged above the top of the foundation pile, and the mechanical hammer is driven by a hydraulic device.

[0013] Preferably, the cross-sectional area of the mechanical hammer is larger than the cross-sectional area of the foundation pile.

[0014] Preferably, there are multiple monitoring components, and the multiple monitoring components are distributed in a circular ring shape.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] Insert the foundation pile into the ground, and then start the hydraulic device. The hydraulic device drives the mechanical hammer to hammer the top of the foundation pile. Under the action of the hammering force, the pile body of the foundation pile will penetrate into the formation; when the mechanical hammer hammers the top of the foundation pile, the hammer surface of the mechanical hammer will touch the force-bearing cap, and the force-bearing cap will move downward under the force. At this time, the spring will be deformed by the force, and the spring deformation due to the force will generate a reaction force, which will be transmitted to the input end of the pressure sensor. At this time, the input end of the pressure sensor receives the reaction force, and then converts the received reaction force into a specific impact force numerical signal and transmits it to the data collector. The data collector transmits the received impact force numerical signal to the remote controller. At the same time, the staff uploads the actual descending depth of the foundation pile body after being impacted by the force to the remote controller. And a preset descending depth of the foundation pile body corresponding to the impact force numerical value is set in the remote controller. By comparing the actual descending depth of the foundation pile body with the preset depth value, it is judged whether the impact force meets the predetermined requirements. If it meets the requirements, continue to work. If it does not meet the requirements, the remote controller controls the falling height of the mechanical hammer, thereby increasing the impact force of the mechanical hammer; at the same time, a maximum impact force numerical value is preset. When the impact force numerical value exceeds the preset maximum value, the remote controller controls the alarm to start alarming, and the entire device stops running. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the structure during hammering of the overall structure of the present utility model;

[0019] Figure 3 It is a schematic diagram of the foundation pile structure in the present utility model;

[0020] Figure 4 It is a schematic diagram of the structure after the assembly of the foundation pile and the monitoring components in the present utility model;

[0021] Figure 5 It is a schematic diagram of the monitoring component structure in the present utility model.

[0022] In the figure:

[0023] 1. Mechanical hammer;

[0024] 2. Foundation pile; 21. Installation groove; 22. Fixing groove; 23. Sliding groove;

[0025] 3. Monitoring component; 31. Pressure sensor; 32. Spring; 33. Spring seat; 34. Force-bearing cap. Detailed implementation manners

[0026] Next, the technical solution of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model.

[0027] Generally, the components of the embodiments of the present utility model described and shown in the accompanying drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model.

[0028] Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] Please refer to Figures 1 to 5, the present utility model provides a technical solution: a monitoring device for the hammering force of a foundation pile, including a foundation pile 2 and a monitoring component 3; an installation groove 21 is provided on the foundation pile 2, and the installation groove 21 includes a fixed groove 22 and a sliding groove 23, and the fixed groove 22 is located below the sliding groove 23; the monitoring component 3 includes a pressure sensor 31 and a force-bearing cap 34, the pressure sensor 31 is accommodated in the internal space of the fixed groove 22, a spring 32 is provided above the pressure sensor 31, spring seats 33 are provided at both ends of the spring 32, the spring 32 is vertically arranged, the spring seat 33 located below is connected to the pressure sensor 31, the spring seat 33 located above is connected to the force-bearing cap 34, and the force-bearing cap 34 is slidably connected to the sliding groove 23.

[0032] In this embodiment, the mechanical hammer 1 and the foundation pile 2 are of a cylindrical structure. Of course, in specific implementation, the mechanical hammer 1 can also be of a cuboid structure and the foundation pile 2 is of a cylindrical structure;

[0033] Insert the foundation pile 2 into the ground, and then start the hydraulic device. The hydraulic device drives the mechanical hammer 1 to hammer the top of the foundation pile 2. Under the action of the hammering force, the pile body of the foundation pile 2 will penetrate into the formation; when the mechanical hammer 1 hammers the top of the foundation pile 2, the hammer surface of the mechanical hammer 1 will touch the force-bearing cap 34, and the force-bearing cap 34 moves downward under force. At this time, the spring 32 will be deformed by force, and the deformation of the spring 32 by force will generate a reaction force, and the reaction force will be transmitted to the input end of the pressure sensor 31. At this time, the input end of the pressure sensor 31 receives the reaction force, and then converts the received reaction force into a specific impact force numerical signal and transmits it to the data collector. The data collector transmits the received impact force numerical signal to the remote controller. At the same time, the staff uploads the actual descending depth of the pile body of the foundation pile 2 after being impacted this time to the remote controller. And a preset descending depth of the pile body of the foundation pile 2 corresponding to the impact force numerical value is set in the remote controller. By comparing the actual descending depth of the pile body of the foundation pile 2 with the preset depth value, it is judged whether the impact force meets the predetermined requirements. If it meets the requirements, continue to work. If it does not meet the requirements, the remote controller controls the falling height of the mechanical hammer 1, so as to increase the impact force of the mechanical hammer 1; at the same time, a maximum impact force numerical value is preset. When the impact force numerical value exceeds the preset maximum value, the remote controller controls the alarm to start alarming, and the entire device stops running.

[0034] Further, the output end of the pressure sensor 31 is connected to the data collector, and the data collector is connected to the remote controller.

[0035] Further, the remote controller is connected to the alarm.

[0036] Further, the alarm is an audible and visual alarm.

[0037] In this embodiment, after the input end of the pressure sensor 31 receives the real-time impact force, it then transmits the specific impact force numerical signal received to the data collector, and the data collector transmits the received impact force numerical signal to the remote controller. At the same time, the staff uploads the actual descending depth of the pile body of the foundation pile 2 after being impacted this time to the remote controller. And in the remote controller, there is a pre-set descending depth of the pile body of the foundation pile 2 corresponding to the impact force numerical value. By comparing the actual descending depth of the pile body of the foundation pile 2 with the preset depth value, it is judged whether the impact force meets the predetermined requirements. If it meets the requirements, the work continues. If it does not meet the requirements, the remote controller controls the falling height of the mechanical hammer 1, thereby increasing the impact force of the mechanical hammer 1. At the same time, there is a pre-set maximum impact force numerical value. When the impact force numerical value exceeds the preset maximum value, the remote controller controls the alarm to start alarming, and the entire device stops running.

[0038] Further, please refer to Figure 4 , the input end of the pressure sensor 31 is connected to the spring seat 33 located below.

[0039] In this embodiment, the input end of the pressure sensor 31 is connected to the spring seat 33 located below. When the spring 32 is deformed by force to form a reaction force, the reaction force is transmitted to the spring seat 33 located below, and the spring seat 33 located below transmits the reaction force to the input end of the pressure sensor 31. The input end of the pressure sensor 31 receives this reaction force and then converts the received reaction force into a specific impact force numerical signal and transmits it to the data collector.

[0040] Further, please refer to Figure 5 , the force-bearing cap 34 is of an inverted U-shaped structure, and the spring seat 33 located above is connected to the bottom surface of the inner wall of the force-bearing cap 34.

[0041] In this embodiment, the force-bearing cap 34 is of an inverted U-shaped structure, which can ensure that the spring 32 deforms between the force-bearing cap 34 and the sliding groove 23 after being stressed, and the situation of the spring 32 swinging and shaking leading to inaccurate measurement will not occur. And the bottom end face of the force-bearing cap 34 will not contact the pressure sensor 31 after being stressed and hitting into the installation groove 21, avoiding damage to the pressure sensor 31 by the force-bearing cap 34.

[0042] Further, please refer to Figure 1 , it further includes a mechanical hammer 1. The mechanical hammer 1 is arranged above the pile top of the foundation pile 2, and the mechanical hammer 1 is driven by a hydraulic device.

[0043] Further, please refer to Figure 1 , the cross-sectional area of the mechanical hammer 1 is larger than the cross-sectional area of the foundation pile 2.

[0044] In this embodiment, the mechanical hammer 1 is driven by a hydraulic device and can change the hammering height of the mechanical hammer 1. The mechanical hammer 1 is arranged above the pile top of the foundation pile 2. Since the cross-sectional area of the mechanical hammer 1 is larger than the cross-sectional area of the foundation pile 2, when the mechanical hammer 1 falls, it is ensured that the pile top of the foundation pile 2 is hammered.

[0045] Furthermore, there are multiple monitoring components 3, and the multiple monitoring components 3 are distributed in an annular shape.

[0046] In this embodiment, this can ensure that the impact force values of each part of the pile top of the foundation pile 2 are measured simultaneously, judge whether the foundation pile 2 is evenly stressed and whether it descends vertically, and avoid the foundation pile 2 from bending and descending.

[0047] The working principle and usage process of the present utility model: Insert the foundation pile 2 into the ground, and then start the hydraulic device. The hydraulic device drives the mechanical hammer 1 to hammer the pile top of the foundation pile 2. Under the action of the hammering force, the pile body of the foundation pile 2 will penetrate into the stratum; when the mechanical hammer 1 hammers the pile top of the foundation pile 2, the hammer surface of the mechanical hammer 1 will touch the force-receiving cap 34, and the force-receiving cap 34 moves downward under the force. At this time, the spring 32 will be deformed by the force, and the spring 32 will generate a reaction force when deformed by the force. The reaction force will be transmitted to the input end of the pressure sensor 31. At this time, the input end of the pressure sensor 31 receives the reaction force, and then converts the received reaction force into a specific impact force value signal and transmits it to the data collector. The data collector transmits the received impact force value signal to the remote controller. At the same time, the staff uploads the actual descending depth of the pile body of the foundation pile 2 after being impacted this time to the remote controller. And a preset descending depth of the pile body of the foundation pile 2 corresponding to the impact force value is set in the remote controller. By comparing the actual descending depth of the pile body of the foundation pile 2 with the preset depth value, it is judged whether the impact force meets the predetermined requirements. If it meets the requirements, continue to work. If it does not meet the requirements, the remote controller controls the falling height of the mechanical hammer 1, thereby increasing the impact force of the mechanical hammer 1; at the same time, a maximum impact force value is preset. When the impact force value exceeds the preset maximum value, the remote controller controls the alarm to start alarming, and the entire device stops running.

[0048] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A monitoring device for the hammering force of a foundation pile, characterized in that: It includes a foundation pile (2) and a monitoring component (3); An installation groove (21) is provided on the foundation pile (2), and the installation groove (21) includes a fixed groove (22) and a sliding groove (23), and the fixed groove (22) is located below the sliding groove (23); The monitoring component (3) includes a pressure sensor (31) and a force-bearing cap (34). The pressure sensor (31) is accommodated in the internal space of the fixed groove (22). A spring (32) is provided above the pressure sensor (31). Spring seats (33) are provided at both ends of the spring (32). The spring (32) is vertically arranged. The spring seat (33) located below is connected to the pressure sensor (31), and the spring seat (33) located above is connected to the force-bearing cap (34). The force-bearing cap (34) is slidably connected to the sliding groove (23).

2. The pile foundation hammering force monitoring device according to claim 1, wherein: The output end of the pressure sensor (31) is connected to a data collector, and the data collector is connected to a remote controller.

3. The pile foundation hammering force monitoring device according to claim 2, characterized in that: The remote controller is connected to an alarm.

4. The pile foundation hammering force monitoring device according to claim 3, characterized in that: The alarm is an audible and visual alarm.

5. The pile foundation hammering force monitoring device according to claim 1, characterized in that: The input end of the pressure sensor (31) is connected to the spring seat (33) located below.

6. The pile foundation hammering force monitoring device according to claim 1, characterized in that: The force-bearing cap (34) is of an inverted U-shaped structure, and the spring seat (33) located above is connected to the bottom surface of the inner wall of the force-bearing cap (34).

7. The pile foundation hammering force monitoring device according to claim 1, characterized in that: It further includes a mechanical hammer (1). The mechanical hammer (1) is provided above the top of the foundation pile (2), and the mechanical hammer (1) is driven by a hydraulic device.

8. The pile foundation hammering force monitoring device according to claim 7, characterized in that: The cross-sectional area of the mechanical hammer (1) is larger than the cross-sectional area of the foundation pile (2).

9. The pile foundation hammering force monitoring device according to claim 1, characterized in that: A plurality of the monitoring components (3) are provided, and the plurality of monitoring components (3) are distributed in a circular ring shape.

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