Intelligent tensioning machine

Abstract

The intelligent tensioning machine comprises a fixing support of a frame structure and supporting legs correspondingly connected with the fixing support, a winding rotary disc is correspondingly arranged above the fixing support, one side of the winding rotary disc is correspondingly connected with a driving motor through a hinge, the driving motor is correspondingly and electrically connected with a control room, and the control room is electrically connected with the winding rotary disc. And a sensor is correspondingly arranged on the winding turntable and is correspondingly and electrically connected with the control chamber. According to the intelligent tensioning machine, the winch traction function and the intelligent tensioning function are integrated, efficient and safe prestress construction is achieved by accurately controlling the tensioning force, the elongation and the speed of the steel strand, traditional manual operation is replaced, and the engineering quality and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tensioning machines, and in particular to an intelligent tensioning machine. Background Art

[0002] Intelligent tensioning machines utilize computer-controlled technology to tension steel strands, rather than relying on manual control. Due to the high precision and stability of the intelligent system, intelligent tensioning technology completely eliminates human interference, effectively ensuring the quality of prestressed steel strands. It is the most advanced technology in the domestic prestressed steel industry.

[0003] Existing intelligent tensioning machines have the problem of difficulty in ensuring tensioning accuracy. Traditional tensioning operations are highly dependent on manual operation and empirical judgment. Tension is applied by manually controlling the hydraulic pump station, and the elongation of the steel strands must be manually measured. This method is not only inefficient, but also has rough force control and large elongation measurement errors. Insufficient tensioning force or over-tensioning often occurs. The force deviation may reach 5% or even higher than the design value, and the elongation deviation may far exceed the ±6% required by the specification. This directly affects the accuracy of prestressing and the safety and durability of the structure. Therefore, there is a need to provide an intelligent tensioning machine. Summary of the Invention

[0004] In order to overcome the defects in the prior art, an intelligent tensioning machine is provided.

[0005] The present invention is achieved through the following solutions:

[0006] An intelligent tensioning machine includes a fixed bracket of a frame structure and supporting feet connected thereto. A winding turntable is provided above the fixed bracket. One side of the winding turntable is connected to a drive motor via a hinge. The drive motor is electrically connected to a control room. A sensor is provided on the winding turntable. The sensor is electrically connected to the control room.

[0007] Fixed brackets are respectively provided on both sides of the fixed bracket, and the fixed brackets are correspondingly connected to the winding turntable.

[0008] The winding turntable includes a first turntable and a second turntable, a bearing column is correspondingly provided between the first turntable and the second turntable, and a rotation groove is correspondingly provided on the bearing column.

[0009] The first turntable and the second turntable are respectively connected to the fixing brackets.

[0010] The driving motor is correspondingly connected to the base, the base is correspondingly connected to the fixed floor, and the fixed floor is correspondingly connected to the fixed bracket.

[0011] A protective cover is correspondingly provided on the outer side of the hinge.

[0012] The beneficial effects of the present invention are:

[0013] 1. A rotating groove is provided in an intelligent tensioning machine of the present invention, so that the bearing column is designed with a spiral groove to prevent the steel strands from being overlapped and worn.

[0014] 2. The intelligent tensioning machine of the present invention integrates winch traction and intelligent tensioning functions. By accurately controlling the tensioning force, elongation and speed of the steel strand, it achieves efficient and safe prestressed construction, replaces traditional manual operation, and improves project quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of an intelligent tensioning machine according to the present invention;

[0016] Figure 2 This is a structural schematic diagram of an intelligent tensioning machine from one perspective of the present invention;

[0017] Figure 3 This is a structural schematic diagram of an intelligent tensioning machine from another perspective of the present invention;

[0018] In the figure: 1 is a fixed bracket, 2 is a supporting foot, 3 is a winding turntable, 31 is a first turntable, 32 is a second turntable, 33 is a bearing column, 34 is a rotating groove, 4 is a fixed bracket, 5 is a hinge, 6 is a driving motor, 7 is a base, 8 is a fixed floor, 9 is a control room, and 10 is a protective cover. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0020] An intelligent tensioning machine includes a fixed support 1 of a frame structure and a supporting leg 2 connected thereto. A winding turntable 3 is provided above the fixed support 1. One side of the winding turntable 3 is connected to a drive motor 6 via a hinge 5. The drive motor 6 is electrically connected to a control room 9. A sensor (not shown in the figure) is provided on the winding turntable 3. The sensor is electrically connected to the control room 9. In the present invention, the drive motor 6 adopts a variable frequency motor or a hydraulic motor to provide controllable traction force. The control room 9 adopts a PLC or an industrial computer control to automatically calculate and apply a preset tensioning force. The present invention can add a hydraulic tensioning system and integrate a hydraulic jack for high-precision terminal tensioning. The sensors on the winding turntable 3 of the present invention are correspondingly provided with a force sensor and a displacement sensor.

[0021] The present invention is equipped with an intelligent tensioning function, which integrates the drive motor 6, force sensor, and displacement sensor, and forms a real-time feedback closed loop with the PLC or industrial computer control unit in the control room 9. The control room 9 of the present invention presets the target tensioning force and theoretical elongation (such as the graded tensioning program 0→20%→100% design force). During the tensioning process, the force sensor monitors the actual tension on the steel strand in real time, and the displacement sensor synchronously and accurately measures the actual elongation of the steel strand. The control room 9 continuously compares the real-time collected force and elongation data with the preset values. Once a deviation is detected (for example, the actual force value is lower than the target value, or the actual elongation does not meet the expected value), the control system will immediately issue a precise adjustment command to the drive motor 6 or the hydraulic servo valve in the hydraulic tensioning system, dynamically adjusting the motor speed or the flow pressure of the hydraulic system, thereby achieving precise fine-tuning of the tensioning force application speed and the final force value, ensuring that the deviation between the actual tensioning force and the preset value is controlled within ±1%, and the elongation deviation is controlled within ±2mm or the extremely small range of the theoretical value. This closed-loop control mechanism is like installing an "autopilot" for the tensioning process, fundamentally eliminating human operational errors and achieving high-precision automation of the tensioning process.

[0022] Fixed brackets 4 are provided on both sides of the fixed bracket 1, and the fixed brackets 4 are connected to the winding turntable 3. The first turntable 31 and the second turntable 32 are also connected to the fixed brackets 4. The present invention increases the connection of the winding turntable 3, ensures the stability of the winding turntable 3, and improves operational safety.

[0023] The winding turntable 3 includes a first turntable 31 and a second turntable 32. A bearing column 33 is disposed between the first turntable 31 and the second turntable 32. The bearing column 33 is also provided with a rotation groove 34. The rotation groove 34 is provided in the intelligent tensioning machine of the present invention, so that the bearing column 33 has a spiral groove design to prevent the strands from being stacked and worn.

[0024] The drive motor 6 is correspondingly connected to the base 7, the base 7 is correspondingly connected to the fixed floor 8, and the fixed floor 8 is correspondingly connected to the fixed bracket 1. The present invention provides a drive motor 6 winch traction integrated drive system. The present invention integrates a powerful winch host, and the drive motor 6 drives the bearing column 33 with a rotating groove 34. In the initial traction stage of long-distance steel strands, the winding turntable 3 works efficiently to quickly tighten the steel strands and initially apply a certain amount of prestress (for example, reaching 20% ​​of the design value). When the steel strands are pulled close to the target position and need to be precisely tensioned, the system does not need to replace equipment, and the hydraulic tensioning system will seamlessly "relay".

[0025] A protective cover 10 is correspondingly provided on the outer side of the hinge 5 to ensure the safe operation of the hinge 5 and prevent workers from accidentally being injured by touching the hinge 5.

[0026] The present invention has constructed multiple safety protection mechanisms. First, at the intelligent monitoring level, the integrated force sensor and displacement sensor can not only be used for precise control, but also for real-time monitoring of anomalies. Once the system detects an abnormal fluctuation in force or elongation (such as a sign of broken wire, slipped wire or overload), the control room 9 can immediately trigger an alarm and execute an emergency shutdown command. Secondly, at the power interruption level, the present invention is also equipped with a fast-response brake, such as an electromagnetic brake or a hydraulic lock. When the control room 9 issues a shutdown command or detects an overload, the brake can act within milliseconds, quickly locking the reel or hydraulic cylinder to prevent the uncontrolled release of tension. The multi-level safety protection system of the present invention, from electronic monitoring to power interruption, greatly reduces the risk of steel strand breakage or uncontrolled rebound, providing a higher level of safety protection for operators.

[0027] The present invention supports the entire equipment through the base. After the control room 9 is powered on, the drive motor 6 drives the winding turntable 3 to operate, and one end of the traction rope is wound around the bearing column 33. The other end of the traction rope is pulled over and tied together with the steel strand on the pay-off machine. During the pay-off process, the operating speeds of the winding machine and the pay-off machine are adjusted to be consistent to ensure that the steel strand output of the pay-off machine can be pulled over by the winding machine in time, avoiding pulling or detention caused by inconsistent speeds.

[0028] The specific structures, working principles and working processes of the force sensor, displacement sensor, control chamber 9 and hydraulic tensioning system in the present invention are common knowledge and will not be described in detail here.

[0029] Although the technical solutions of the present invention have been described and listed in detail, it should be understood that it is obvious to those skilled in the art to make modifications to the above embodiments or adopt equivalent alternatives. These modifications or improvements made without departing from the spirit of the present invention are within the scope of protection claimed by the present invention.

Claims

1. An intelligent tensioning machine, comprising a fixed bracket (1) of a frame structure and supporting legs (2) connected thereto, characterized in that: A winding turntable (3) is correspondingly provided above the fixed bracket (1); one side of the winding turntable (3) is correspondingly connected to a drive motor (6) via a hinge (5); the drive motor (6) is correspondingly electrically connected to a control room (9); a sensor is correspondingly provided on the winding turntable (3); and the sensor is correspondingly electrically connected to the control room (9).

2. The intelligent tensioning machine according to claim 1, characterized in that: Fixed brackets (4) are respectively provided on both sides of the fixed bracket (1), and the fixed brackets (4) are correspondingly connected to the winding turntable (3).

3. The intelligent tensioning machine according to claim 2, characterized in that: The winding turntable (3) comprises a first turntable (31) and a second turntable (32), a bearing column (33) is correspondingly provided between the first turntable (31) and the second turntable (32), and a rotation groove (34) is correspondingly provided on the bearing column (33).

4. The intelligent tensioning machine according to claim 3, characterized in that: The first rotating disk (31) and the second rotating disk (32) are respectively connected to the fixed bracket (4).

5. The intelligent tensioning machine according to claim 1, characterized in that: The driving motor (6) is correspondingly connected to the base (7), the base (7) is correspondingly connected to the fixed floor (8), and the fixed floor (8) is correspondingly connected to the fixed bracket (1).

6. The intelligent tensioning machine according to claim 1, characterized in that: A protective cover (10) is correspondingly provided on the outer side of the hinge (5).

Images