Pile head girdling equipment with reinforcing steel bar protection function

Abstract

The invention discloses pile head girdling equipment with a reinforcing steel bar protection function, which comprises a cutting machine and a detection protection system, and is characterized in that the detection protection system comprises a power supply used for forming a detection loop between a reinforcing steel bar of a to-be-girdled pile head and a cutting blade of the cutting machine; the central processing unit is used for receiving communication information of the detection loop and sending a control command; and the switch unit receives the control command of the central processing unit and cuts off or starts a power source of the cutting machine. The detection loop is arranged between the metal cutting blade and the pile foundation main reinforcement by utilizing the conductive characteristic of the reinforcement, the communication information is formed when the cutting blade touches the reinforcement, and the power source is cut off by the switch unit according to the communication information, so that the influence of subjective operation can be eliminated in the ring cutting process; cutting can be automatically stopped to prevent the steel bars from being damaged.

Description

Technical Field

[0001] This invention relates to the field of cutting equipment, and in particular to a pile head circumferential cutting device with rebar protection function. Background Technology

[0002] In the field of building construction, the treatment of concrete pile heads is a crucial step in ensuring the integrity of pile foundation structures. Traditional methods often involve pneumatic chisels or blasting, which have significant drawbacks: low efficiency, making it difficult to meet the needs of large-scale construction; easy damage to reinforcing steel, affecting the bearing capacity of the pile foundation; poor pile head flatness, increasing the difficulty of subsequent treatment; and the large amount of noise and dust generated during construction, causing serious pollution to the surrounding environment, which is inconsistent with the concept of green construction.

[0003] To address the aforementioned issues, the pile foundation circumferential cutting method has emerged as an advanced technology. The core of this technology lies in controlling cutting accuracy and protecting the reinforcing bars. In terms of cutting accuracy, the accuracy of the cut can be effectively guaranteed by installing a stable support or a circular track system around the pile. However, in terms of reinforcing bar protection, the current method mainly relies on drawings to determine the thickness of the protective layer, or on using a reinforcing bar detector to locate the main reinforcing bars during cutting to adjust the cutting depth. This method is complex to operate and requires highly skilled personnel, making it difficult to fundamentally ensure the safety of the main reinforcing bars, and there is still room for improvement.

[0004] Therefore, there is an urgent need to develop a pile head circumferential cutting device with rebar protection function. During the circumferential cutting process, the influence of subjective operation should be eliminated, and the cutting should automatically stop when the cutting blade touches the rebar to prevent damage to the rebar. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a pile head circumferential cutting device with a rebar protection function. During the circumferential cutting process, the influence of subjective operation is eliminated, and the cutting can automatically stop cutting when the cutting blade touches the rebar to prevent damage to the rebar.

[0006] The pile head circumferential cutting equipment with rebar protection function of the present invention includes a cutting machine and a detection and protection system, wherein the detection and protection system includes:

[0007] Power supply, used to form a detection circuit between the reinforcing bar of the pile head to be circumcised and the cutting blade of the cutting machine;

[0008] The central processing unit receives the connectivity information of the detection loop and issues control commands.

[0009] The switching unit receives control commands from the central processing unit and cuts off or turns on the power source of the cutting machine.

[0010] Furthermore, the detection and protection system also includes a connectivity information detection unit, which is used to acquire connectivity information of the detection loop and transmit it to the central processing unit.

[0011] Furthermore, the detection circuit includes a first electrical connection unit electrically connected to the reinforcing bar and a second electrical connection unit electrically connected to the cutting disc, and the power supply is electrically connected to the first electrical connection unit and the second electrical connection unit respectively.

[0012] Furthermore, the second electrical connection unit is a carbon brush assembly, which includes a carbon brush, and the carbon brush is subjected to a preload force that electrically connects to and presses against the cutting blade or a component that drives the cutting blade to rotate.

[0013] Furthermore, the carbon brush assembly also includes a spring for applying preload and a mounting base. The mounting base is fixed to the blade guard of the cutting machine and has a receiving groove for accommodating the spring and part of the carbon brush. Under the action of the spring preload, the carbon brush abuts against the side of the cutting blade or the circumferential surface of the cutting blade shaft.

[0014] Furthermore, the first electrical connection unit is a conductive clamp, which is used to conductively clamp the reinforcing bar of the pile head to be circumcised.

[0015] Furthermore, the power supply, central processing unit, switching unit, and connectivity information detection unit are integrated into one unit to form the detection and protection system.

[0016] Furthermore, the power source is an electric power source, the switching unit is an electric switch, and the power supply is obtained from the electric power source through processing or is an independent power supply;

[0017] Alternatively, the power source may be a mechanical power source, and the switching unit may be a solenoid valve controlled by the central processing unit to open or close the output of the mechanical power source to the cutting machine.

[0018] Furthermore, the switching unit also includes a reset button for restarting the cutting machine, which is used to manually open the power switch or solenoid valve after it has been shut down by executing a command from the central processing unit.

[0019] Furthermore, it also includes a connecting wire, which is electrically connected between the first electrical connection unit, the second electrical connection unit and the power supply to form a detection circuit;

[0020] The connectivity information detection unit is electrically connected to the detection circuit to obtain connectivity information of the detection circuit, or it is located near the detection circuit to obtain connectivity information of the detection circuit through electromagnetic induction.

[0021] The beneficial effects of the present invention are as follows: The pile head circumferential cutting equipment with rebar protection function of the present invention utilizes the conductive properties of rebar and sets up a detection circuit between the metal cutting blade and the main rebar of the pile foundation. When the cutting blade touches the rebar, a connection information is formed, and the switching unit cuts off the power source based on the connection information. Therefore, the present invention eliminates the influence of subjective operation during the circumferential cutting process. When the cutting blade touches the rebar, it can automatically stop cutting to prevent damage to the rebar. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the installation of the second electrical connection unit of the present invention;

[0025] Figure 3 This is a schematic diagram of the carbon brush assembly of the present invention;

[0026] Figure 4 This is a schematic diagram of the detection and protection system of the present invention.

[0027] Figure 5 This is a block diagram of the detection circuit principle of the present invention;

[0028] Figure 6 This is a block diagram illustrating the principle of the detection and protection system of the present invention. Detailed Implementation

[0029] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 2 This is a schematic diagram of the carbon brush assembly installation according to the present invention. Figure 3 This is a partial schematic diagram of the carbon brush assembly of the present invention. Figure 4 This is a schematic diagram of the control components of the present invention. Figure 5 This is a block diagram of the detection circuit principle of the present invention. Figure 6 The schematic diagram of the detection and protection system of the present invention is shown in the figure. The pile head circumferential cutting equipment with rebar protection function in this embodiment includes a cutting machine 1 and a detection and protection system 4. The detection and protection system 4 includes:

[0030] Power supply 401 is used to form a detection circuit between the reinforcing bar 6 to be circumcised and the cutting blade 102 of the cutting machine 1. When the power source is an electric power source, the power supply 401 is obtained by processing the electric power source or is an independent power source. That is, the power supply 401 can be obtained by stepping down the voltage of the electric power source or an independent safety power source. When the power source is a mechanical power source, the power supply 401 is an independent power source. The voltage of the power supply 401 is a safety voltage of less than 36V to prevent construction personnel from being electrocuted. While forming a detection circuit between the reinforcing bar 6 and the cutting blade 102 of the cutting machine 1, it generates detectable connection information in the detection circuit, including directly acquired current information and voltage information, or connection information acquired through electromagnetic induction, which will not be elaborated here.

[0031] The central processing unit receives the connectivity information of the detection loop and issues control commands. The central processing unit is generally formed by a CPU and peripheral circuits, which can realize the data reception and control command issuance of the present invention. It belongs to the existing common control circuits and will not be described in detail here.

[0032] The switch unit 402 receives control commands from the central processing unit to cut off or turn on the power source of the cutting machine 1, causing the cutting machine 1 to stop operating, thereby protecting the reinforcing steel 6 inside the pile head. When the power source is either an electric power source or a mechanical power source, the switch unit 402 is either an electric switch or a mechanical switch. Mechanical switches include electrically controlled mechanical switches, etc., which will not be described in detail here.

[0033] In this embodiment, the detection and protection system 4 further includes a connectivity information detection unit, which is used to acquire connectivity information of the detection loop and transmit it to the central processing unit. The connectivity information detection unit can be directly connected to the detection loop through devices such as ammeters and voltmeters that can acquire connectivity information and transmit the connectivity information to the central processing unit. Alternatively, it can be located outside the detection loop and can indirectly acquire connectivity information when a detection loop is formed between the reinforcing bar 6 of the pile head to be circumcised and the cutting blade 102 of the cutting machine 1 through devices such as electromagnetic induction coils and transmit the connectivity information to the central processing unit. Further details are omitted here.

[0034] In this embodiment, as Figure 5As shown, the detection circuit includes a first electrical connection unit 3 electrically connected to the reinforcing bar 6 and a second electrical connection unit 2 electrically connected to the cutting blade 102. The power supply 401 is electrically connected to the first electrical connection unit 3 and the second electrical connection unit 2 respectively. When the reinforcing bar 6 to be circumcised and the cutting blade 102 of the cutting machine 1 come into contact, a complete detection circuit is formed. The first electrical connection unit 3 is used to form an electrical connection with the reinforcing bar 6. Structurally, it only needs to form an electrical connection with the reinforcing bar, such as an electrical connection clamp, a bolt to tighten the wire, or a direct threaded electrical connection, etc., which will not be described in detail here. The second electrical connection unit 2 is used to connect to the cutting blade 102. It includes components that are directly electrically connected to the cutting blade and components that have conductive contact with the cutting blade, such as the cutting blade shaft, etc., which will not be described in detail here. This structure needs to be fixedly installed and slide in contact with the cutting blade or shaft and conduct electricity, such as a carbon brush structure or metals forming sliding friction with each other, etc., which will not be described in detail here.

[0035] In this embodiment, the second electrical connection unit 2 is a carbon brush assembly, which includes a carbon brush 202. The carbon brush 202 is subjected to a pre-tightening force that electrically connects and presses against the cutting disc 102 or the component that drives the cutting disc 102 to rotate. As shown in the figure, the carbon brush assembly includes a carbon brush 202, which is generally made of carbon material, usually pure carbon with a coagulant. It has good conductivity and wear resistance, which is prior art and will not be described in detail here. The carbon brush 202, as a conductive connector electrically connected to the cutting disc 102, is subjected to a pre-tightening force that presses against the cutting disc 102 or the component that drives the cutting disc 102 to rotate, so that the carbon brush 202 maintains contact with the cutting disc 102 or the component that drives the cutting disc 102 to rotate, ensuring the continuity of the detection circuit.

[0036] In this embodiment, the carbon brush assembly further includes a spring 203 for applying preload and a mounting base 201. The mounting base 201 is fixed to the blade guard 101 of the cutting machine 1 and has a receiving groove for accommodating the spring 203 and part of the carbon brush 202. The carbon brush 202 abuts against the side of the cutting blade 102 or the circumferential surface of the cutting blade shaft 103 under the preload of the spring 203. As shown in the figure, the carbon brush assembly further includes a spring 203 for applying preload and a mounting base 201. The mounting base 201 is fixedly installed on the blade guard 101 of the cutting machine 1, and the... The mounting base 201 is made of insulating materials such as plastic, which insulates the carbon brush 202 and the connecting wire 5 from the cutting machine 1. At the same time, a receiving groove is provided inside the blade protective cover 101 to accommodate the spring 203 and part of the carbon brush 202. Under the preload of the spring 203, the carbon brush 202 abuts against the side of the cutting blade 102 or the circumferential surface of the cutting blade shaft 103. That is, without affecting the rotation of the cutting blade 102, the carbon brush 202 forms an electrical connection with the side of the cutting blade 102 or the outer circumferential surface of the cutting blade shaft 103 on which the cutting blade 102 is mounted, ensuring the continuity of the detection circuit.

[0037] In this embodiment, the first electrical connection unit 3 is a conductive clamp, which is used to conductively clamp the reinforcing bar 6 of the pile head to be circumcised. The conductive clamp is a common point clamping structure, which is simple and convenient to use, and will not be described in detail here. As shown in the figure, the first electrical connection unit 3 is a conductive clamp, which is made of metal and has an insulating rubber sleeve at the handle. When in use, the conductive clamp is conductively clamped to the exposed reinforcing bar 6 of the pile head to be circumcised, forming an electrical connection.

[0038] In this embodiment, the power supply 401, central processing unit, switching unit 402 and connectivity information detection unit are integrated into one unit to form the detection and protection system 4. As shown in the figure, the detection and protection system 4 is integrated by a housing and installed on the outside of the cutting machine body. The structure is simple and compact. The way it is integrated into the housing is a general arrangement of circuit integration in the housing, which will not be described in detail here.

[0039] In this embodiment, the power source is an electric power source, the switching unit 402 is an electric switch, and the power supply 401 is obtained from the electric power source after processing or is an independent power supply. That is, when the cutting machine 1 is electrically driven, the switching unit 402 used to cut off the power source is an electric switch, generally an electromagnetic switch, which can directly cut off the power source of the cutting machine 1. At the same time, the power supply 401 can be obtained from the electric power source after voltage reduction processing, or an independent safety power supply can be used.

[0040] Of course, another specific implementation method can also be adopted. For example, the power source is a mechanical power source, such as a pneumatic motor, which will not be described in detail here; the switch unit 402 is a solenoid valve controlled by the central processing unit to open or close the output of the mechanical power source to the cutting machine 1. That is, when the cutting machine 1 is a pneumatic motor cutting machine, the switch unit 402 is a solenoid valve controlled by the central processing unit. The solenoid valve acts as a converter to connect the pneumatic cutting machine to the air pipe. When a control command is received, the gas power source of the pneumatic cutting machine is directly cut off, which can also achieve the purpose of the invention, and will not be described in detail here.

[0041] In this embodiment, the switching unit 402 further includes a reset button 403 for restarting the cutting machine 1. The reset button 403 is used to manually open the power switch or solenoid valve after it has been closed due to a command from the central processing unit. Figure 6 As shown, the reset button 403 is used to manually input a command to the central processing unit when the power switch or solenoid valve is closed after executing the command of the central processing unit and the conditions for continuing cutting are met. The central processing unit sends a command to the switch unit to close and then restarts the cutting machine 1 to continue the circumferential cutting work, which has good safety.

[0042] In this embodiment, a connecting wire 5 is also included. The connecting wire 5 is electrically connected between the first electrical connection unit 3, the second electrical connection unit 2, and the power supply 401 to form a detection loop. The connectivity information detection unit is electrically connected to the detection loop to obtain connectivity information of the detection loop or is located near the detection loop to obtain connectivity information of the detection loop through electromagnetic induction. The connectivity information detection unit is electrically connected to the detection loop in the circuit structure to obtain connectivity information of the detection loop. The connectivity information detection unit generally adopts current detection devices such as ammeters or voltage detection devices connected in parallel to the detection loop, etc., which will not be described in detail here.

[0043] Of course, in order to obtain connectivity information in the detection circuit, an electromagnetic induction device set next to the detection circuit can also be used to obtain connectivity information, such as a battery induction coil or other device placed outside the detection circuit, which can also achieve the purpose of the invention, and will not be described in detail here.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pile head circumferential cutting device with rebar protection function, characterized in that: Includes a cutting machine and a detection and protection system. The detection and protection system includes: Power supply, used to form a detection circuit between the reinforcing bar of the pile head to be circumcised and the cutting blade of the cutting machine; The central processing unit receives the connectivity information of the detection loop and issues control commands. The switching unit receives control commands from the central processing unit and cuts off or turns on the power source of the cutting machine.

2. The pile head circumferential cutting equipment with rebar protection function according to claim 1, characterized in that: The detection and protection system also includes a connectivity information detection unit, which is used to acquire connectivity information of the detection loop and transmit it to the central processing unit.

3. The pile head circumferential cutting equipment with rebar protection function according to claim 2, characterized in that: The detection circuit includes a first electrical connection unit electrically connected to the reinforcing bar and a second electrical connection unit electrically connected to the cutting disc, and the power supply is electrically connected to the first electrical connection unit and the second electrical connection unit respectively.

4. The pile head circumferential cutting equipment with rebar protection function according to claim 3, characterized in that: The second electrical connection unit is a carbon brush assembly, which includes a carbon brush. The carbon brush is subjected to a preload force that electrically connects to and presses against the cutting blade or a component that drives the cutting blade to rotate.

5. The pile head circumferential cutting equipment with rebar protection function according to claim 4, characterized in that: The carbon brush assembly also includes a spring for applying preload and a mounting base. The mounting base is fixed to the blade guard of the cutting machine and has a receiving groove for accommodating the spring and part of the carbon brush. Under the action of the spring preload, the carbon brush abuts against the side of the cutting blade or the circumferential surface of the cutting blade shaft.

6. The pile head circumferential cutting equipment with rebar protection function according to claim 3, characterized in that: The first electrical connection unit is a conductive clamp, which is used to conductively clamp the reinforcing bar of the pile head to be circumcised.

7. The pile head circumferential cutting equipment with rebar protection function according to claim 2, characterized in that: The power supply, central processing unit, switching unit, and connectivity information detection unit are integrated into one unit to form the detection and protection system.

8. The pile head circumferential cutting equipment with rebar protection function according to claim 7, characterized in that: The power source is an electric power source, the switching unit is an electric switch, and the power supply is obtained from the electric power source through processing or is an independent power supply. Alternatively, the power source may be a mechanical power source, and the switching unit may be a solenoid valve controlled by the central processing unit to open or close the output of the mechanical power source to the cutting machine.

9. The pile head circumferential cutting equipment with rebar protection function according to claim 7, characterized in that: The switching unit also includes a reset button for restarting the cutting machine, which is used to manually open the power switch or solenoid valve after it has been shut down by executing a command from the central processing unit.

10. The pile head circumferential cutting equipment with rebar protection function according to claim 7, characterized in that: It also includes a connecting wire, which is electrically connected between the first electrical connection unit, the second electrical connection unit and the power supply to form a detection circuit; The connectivity information detection unit is electrically connected to the detection circuit to obtain connectivity information of the detection circuit, or it is located near the detection circuit to obtain connectivity information of the detection circuit through electromagnetic induction.

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