A fully automated static pressure detection device and method for a jack

Abstract

The present invention discloses a fully automated static pressure detection device for a jack, which includes a detection platform, a pressure sensor, a pressurizing manipulator, an electric servo pressure regulating device, a vision system, a six-joint robot material handling device, a pressure relief device and a human-machine operation interface. The method is as follows: First, place the jack to be detected in the detection area on the detection platform; then pressurize the jack through the pressure piston rod, compare the value obtained by the pressure sensor, the value of the pressure sensor and the pressure value applied by the pressurizing manipulator to the jack with the set value to check whether the static pressure of the jack is qualified; then move the jack under the pressure relief device to relieve the pressure on the jack; finally, place the qualified jack in the qualified product storage area and place the unqualified jack in the unqualified product storage area. The present invention can automatically detect the static pressure of the jack, reduce the labor intensity of the operator, improve the detection efficiency, and improve the authenticity and objectivity of the test data.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic control, and in particular to a fully automatic static pressure detection device and method for a jack. Background Art

[0002] A jack is a lightweight and portable lifting device, mainly used for short-distance lifting of heavy objects. There are two common types: mechanical and hydraulic. Among them, the hydraulic jack has the advantages of a compact structure, stable operation, large jacking force, and self-locking, and has a wide range of applications.

[0003] Before the hydraulic jack leaves the factory, static pressure detection is required. At present, for the traditional static pressure detection of jacks, most of them adopt the method of manually detecting the pressure of the jack and manually adjusting the pressure.

[0004] The manual detection method requires a large number of detection personnel. The consistency of manual detection of products is relatively poor. There may be misjudgments in manual control of pressure detection, and the detection qualification rate is not high; the jack is relatively heavy, and the manual inspection frequency is very fast, resulting in a large labor volume. It is very difficult for newly recruited personnel to have accurate discrimination and physical strength, resulting in frequent replacement of personnel in the position, which has great disadvantages for enterprise management. Summary of the Invention

[0005] The purpose of the present invention is to provide a jack static pressure detection device and method that can reduce the labor intensity of detection personnel, improve the detection efficiency, ensure the consistency of products, and improve the product quality.

[0006] The technical solution for achieving the purpose of the present invention is: a fully automatic jack static pressure detection device, including a detection platform, a pressure sensor, a pressurizing manipulator, an electric servo pressure regulating device, a vision system, a six-joint robot material handling device, a pressure relief device, and a human-machine operation interface;

[0007] At one end of the detection platform, a bracket for the pressurizing manipulator and a bracket for the pressure relief device are installed in parallel. On the bracket of the pressurizing manipulator, the pressurizing manipulator and the pressure sensor are arranged side by side. The pressure relief device is arranged on the bracket of the pressure relief device; at the other end of the detection platform, a six-joint robot material handling device is arranged, and an electric servo pressure regulating device is arranged at the end of the six-joint robot material handling device; a vision system is arranged at a position adjacent to the jack placement area on the detection platform; a human-machine operation interface is arranged on the side of the detection platform.

[0008] Further, the pressure sensor adopts an electronic pressure sensor with an accuracy of 1 / 1000, and is connected to the plc analog module using a 4-20ma analog signal. If the product detection value exceeds the set pressure value, it is considered that the static pressure detection of the jack is unqualified.

[0009] Further, in the human-machine operation interface, the product number to be detected is pre-set according to product parameters. When entering the human-machine operation interface for detection, click to select the product model to be detected, and then the detection work can be carried out.

[0010] Further, the pressurizing manipulator is installed on the bracket of the pressurizing manipulator, and is used to grasp the upper piston rod of the jack and perform a pressurizing operation on the piston rod. According to the lifting distance and number of times of the pressurizing manipulator, the pressure value applied by the pressurizing manipulator to the jack is calculated.

[0011] Further, the pressurizing manipulator pressurizes the pump body of the jack according to the product model selected in the human-machine operation interface. The jacking force generated by the jack piston rod is fed back to the pressure sensor. The value of the pressure sensor and the pressure value applied by the pressurizing manipulator to the jack are compared with the set value to check whether the static pressure of the jack is qualified.

[0012] Further, the electric servo pressure regulating device is used to calculate based on the existing pressure value and the factory-set value, control the torque and the number of rotations of the wrench through the servo motor, and adjust the equipment to the factory-set pressure value.

[0013] Further, the vision system uses a 2D planar camera. After the jack finishes the jacking pressure, it takes a photo of the pressure regulating knob, finds the adjustment position of the pressure regulating knob to obtain the accurate position, and then the electric servo pressure regulating device performs pressure regulation.

[0014] Further, the six-axis robot material handling device is used to place the jack on the test area, and after the jack finishes the pressure test, it grabs the jack under the pressure relief device for pressure relief, and then transports the jack away from the detection platform, places the qualified jack in the qualified product storage area, and places the unqualified jack in the unqualified product storage area.

[0015] Further, the pressure relief device is used to perform a pressure relief operation on the jack that has completed the pressure test.

[0016] A fully automated static pressure detection method for a jack includes the following steps:

[0017] Step 1: Use the six-axis robot material handling device to place the detection product, i.e., the jack, in the detection area on the detection platform; after the static load test tooling table fixture detects that the detection product is in place, execute the clamping cylinder mechanism to clamp the detection product;

[0018] The clamping cylinder mechanism is configured with a detection product in-place sensor, and the high-level signal is turned on; the clamping cylinder mechanism is configured with a cylinder clamping sensor, and the high-level signal is turned on; the clamping cylinder mechanism is configured with a cylinder loosening sensor, and the high-level signal is turned on;

[0019] When the in-place sensor of the detected product is turned on and the clamping sensor of the cylinder is turned on, the manipulator of the six-joint robot material handling device retracts to within the range of the safety trajectory data area and performs the next action;

[0020] Step 2: When the manipulator of the six-joint robot material handling device retracts to within the range of the safety trajectory data area, the pressurizing manipulator pressurizes the jack through the pressure piston rod, and the large piston rod pressure test mechanism descends;

[0021] Step 3: Obtain the value through the pressure sensor, compare the value of the pressure sensor and the pressure value applied by the pressurizing manipulator to the jack with the set value, and use the PID fuzzy algorithm to output data to control the manipulator to rotate and adjust the angle of the pressure relief valve until the set value standard is reached, and check whether the static pressure of the jack is qualified;

[0022] Step 4: The six-joint robot material handling device uses a servo wrench to move the jack under the pressure relief device and relieve the pressure of the jack;

[0023] Step 5: The six-joint robot material handling device moves the jack away from the detection platform and places the qualified jack in the qualified product storage area. When the system determines that the product is unqualified, it grabs the product and places it on the unqualified product storage table for repair; if 5 consecutive jacks are unqualified, the system will execute the red rotating light alarm system to notify the repair personnel to take away the unqualified products; the unqualified product storage table is equipped with a sensor for detecting the presence of materials, and the high-level signal is turned on.

[0024] Compared with the prior art, the present invention has the following remarkable advantages: (1) Automatically detect the pressure value, reduce the labor cost, reduce the risk of mechanical injury, and improve the safety of personnel operation; (2) By setting the product parameter selection type on the human-machine interface, it can effectively reduce the subsequent trouble of adjusting the machine, save the operation time, and improve the detection efficiency; (3) The overall structure is simplified and clear, optimizing the factory production line layout; (4) Ensure the consistency of the product and improve the quality of the product. Brief Description of the Drawings

[0025] Figure 1 is a flow schematic diagram of a fully automated static pressure detection method for a jack of the present invention.

[0026] Figure 2 is a structural schematic diagram of a fully automated static pressure detection device for a jack of the present invention

[0027] Figure 3 is a structural schematic diagram of the pressure sensor and the pressurizing manipulator in the present invention.

[0028] Figure 4 is a structural schematic diagram of the electric servo pressure regulating device in the present invention. Detailed Embodiment

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Combined with Figure 2 , a fully automated static pressure detection device for a jack of the present invention is characterized in that it includes a detection platform 8, a pressure sensor 1, a pressurizing manipulator 2, an electric servo pressure regulating device 3, a vision system 4, a six-axis robot material handling device 5, a pressure relief device 6, and a human-machine operation interface 7;

[0031] At one end of the detection platform 8, a bracket for the pressurizing manipulator 2 and a bracket for the pressure relief device 6 are installed in parallel. The pressurizing manipulator 2 and the pressure sensor 1 are arranged side by side on the bracket of the pressurizing manipulator 2, and the pressure relief device 6 is arranged on the bracket of the pressure relief device 6; at the other end of the detection platform 8, a six-axis robot material handling device 5 is arranged, and an electric servo pressure regulating device 3 is arranged at the end of the six-axis robot material handling device 5; a vision system 4 is arranged on the detection platform 8 near the jack placement area; a human-machine operation interface 7 is arranged on the side of the detection platform 8.

[0032] Further, the pressure sensor 1 adopts an electronic pressure sensor with an accuracy of 1 / 1000, and is connected to the plc analog module with a 4-20ma analog signal. If the product detection value exceeds the set pressure value, it is considered that the static pressure detection of the jack is unqualified.

[0033] Further, for the human-machine operation interface 7, the product number to be detected is set in advance according to the product parameters. When entering the human-machine operation interface during detection, click to select the required product model to start the detection work.

[0034] Further, combined with Figure 3 , the pressurizing manipulator 2 is installed on the bracket of the pressurizing manipulator 2, and is used to grab the upper piston rod of the jack and perform a pressurizing operation on the piston rod. According to the lifting distance and number of times of the pressurizing manipulator 2, the pressure value applied by the pressurizing manipulator 2 to the jack is calculated.

[0035] Further, the pressurizing manipulator 2 pressurizes the jack pump body according to the product model selected by the human-machine operation interface 7. The jacking force generated by the jack piston rod is fed back to the pressure sensor 1, and the value of the pressure sensor 1 and the pressure value applied by the pressurizing manipulator 2 to the jack are compared with the set value to check whether the static pressure of the jack is qualified.

[0036] Further, combined with Figure 4 , the electric servo pressure regulating device 3 is used to calculate according to the existing pressure value and the factory set value, and control the torque and the number of turns of the wrench rotation through the servo motor to adjust the equipment to the factory set pressure value.

[0037] Further, the vision system 4 uses a 2D planar camera. After the jack finishes pressing, it takes a photo of the pressure regulating knob, searches for the adjusted position of the pressure regulating knob to obtain the accurate position, and then the electric servo pressure regulating device 3 adjusts the pressure.

[0038] Further, the six-joint robot material handling device 5 is used to place the jack into the test area. And after the jack finishes pressure testing, it grabs the jack below the pressure relief device 6 for pressure relief, and then transports the jack away from the detection platform 8, places the qualified jacks in the qualified product storage area, and places the unqualified jacks in the unqualified product storage area.

[0039] Further, the pressure relief device 6 is used to perform pressure relief operations on the jacks that have completed pressure testing.

[0040] Combined Figure 1 , a fully automated static pressure detection method for jacks, includes the following steps:

[0041] Step 1: Use the six-joint robot material handling device 5 to place the test product, i.e., the jack, into the detection area on the detection platform; after the static load test tooling table fixture detects that the test product is in place, it executes the clamping cylinder mechanism to clamp the test product;

[0042] This clamping cylinder mechanism is equipped with a sensor for detecting the test product in place, and the high-level signal is turned on; this clamping cylinder mechanism is equipped with a cylinder clamping sensor, and the high-level signal is turned on; this clamping cylinder mechanism is equipped with a cylinder release sensor, and the high-level signal is turned on;

[0043] When the sensor for detecting the test product in place is turned on and the cylinder clamping sensor is turned on, the manipulator of the six-joint robot material handling device 5 then withdraws to within the safe trajectory data area and executes the next action;

[0044] Step 2: When the manipulator of the six-joint robot material handling device 5 withdraws to within the safe trajectory data area, the pressurizing manipulator 2 pressurizes the jack through the pressure piston rod, and the large piston rod pressure test mechanism descends;

[0045] Step 3: Compare the value obtained by the pressure sensor 1, the value of the pressure sensor 1 and the pressure value applied by the pressurizing manipulator 2 to the jack with the set value, and use the PID fuzzy algorithm to output data to control the rotation of the manipulator to adjust the angle of the pressure relief valve until the set value standard is reached, and check whether the static pressure of the jack is qualified;

[0046] Step 4: The six-joint robot material handling device 5 uses a servo wrench to transport the jack below the pressure relief device 6 and relieve the pressure of the jack;

[0047] Step 5: The six-joint robot handling material device 5 transports the jack away from the detection platform 8 and places the qualified jacks at the qualified product storage location. When the system determines that the product is unqualified, it grabs the product and places it on the unqualified product storage table for repair. If 5 consecutive jacks are unqualified, the system will activate the red rotating light alarm system to notify the repair personnel to pick up the unqualified products. The unqualified product storage table is equipped with a sensor for detecting the presence of materials, and the high-level signal is turned on.

[0048] In summary, the present invention automatically detects the pressure value, reducing the labor cost; by setting the product parameter selection on the human-machine interface, it can effectively reduce the subsequent trouble of adjusting the machine, save the operation time, and improve the detection efficiency; the overall structure is simplified and clear, optimizing the layout of the factory production line; ensuring the consistency of the products and improving the product quality.

Claims

1. A fully automated static pressure detection method for a jack, characterized in that, The device for implementing this detection method includes a detection platform (8), a pressure sensor (1), a pressurizing manipulator (2), an electric servo pressure regulating device (3), a vision system (4), a six-joint robot material handling device (5), a pressure relief device (6), and a human-machine operation interface (7); at one end of the detection platform (8), the brackets of the pressurizing manipulator (2) and the pressure relief device (6) are installed side by side. On the bracket of the pressurizing manipulator (2), the pressurizing manipulator (2) and the pressure sensor (1) are arranged side by side. The pressure relief device (6) is arranged on the bracket of the pressure relief device (6); at the other end of the detection platform (8), a six-joint robot material handling device (5) is arranged, and an electric servo pressure regulating device (3) is arranged at the end of the six-joint robot material handling device (5); the vision system (4) is arranged at a position adjacent to the jack placement area on the detection platform (8); the human-machine operation interface (7) is arranged on the side of the detection platform (8); The steps of this detection method are as follows: Step 1: Use the six-joint robot material handling device (5) to place the detection product, i.e., the jack, into the detection area on the detection platform; after the static load test tooling table fixture detects that the detection product is in place, execute the clamping cylinder mechanism to clamp the detection product; This clamping cylinder mechanism is configured with a detection product in-place sensor, and the high-level signal is turned on; this clamping cylinder mechanism is configured with a cylinder clamping sensor, and the high-level signal is turned on; this clamping cylinder mechanism is configured with a cylinder loosening sensor, and the high-level signal is turned on; When the detection product in-place sensor is turned on and the cylinder clamping sensor is turned on, the manipulator of the six-joint robot material handling device (5) will withdraw to within the range of the safe trajectory data area and perform the next action; Step 2: When the manipulator of the six-joint robot material handling device (5) withdraws to within the range of the safe trajectory data area, the pressurizing manipulator (2) pressurizes the jack through the pressure piston rod, and the large piston rod pressure test mechanism descends; Step 3: Based on the value obtained by the pressure sensor (1), compare the value of the pressure sensor (1) and the pressure value applied by the pressurizing manipulator (2) to the jack with the set value, and use the PID fuzzy algorithm to output data to control the rotation of the manipulator to adjust the angle of the pressure relief valve until the set value standard is reached to check whether the static pressure of the jack is qualified; Step 4: The six-joint robot material handling device (5) uses a servo wrench to move the jack under the pressure relief device (6) to relieve the pressure on the jack; Step 5: The six-joint robot material handling device (5) moves the jack away from the detection platform (8), places the qualified jack in the qualified product storage area, and when the system determines that the product is unqualified, grabs the product and places it on the unqualified product storage table for repair; if 5 consecutive jacks are unqualified, the system will execute the red rotating light alarm system to notify the repair personnel to pick up the unqualified products; the unqualified product storage table is configured with a sensor for detecting the presence or absence of materials, and the high-level signal is turned on.

2. The fully automated static pressure detection method for a jack according to claim 1, wherein The pressure sensor (1) is an electronic pressure sensor with an accuracy of 1 / 1000. It is connected to the PLC analog module using a 4-20 mA analog signal. If the detected value of the product exceeds the set pressure value, it is considered that the static pressure detection of the jack is unqualified.

3. The fully automated static pressure detection method for a jack according to claim 1, wherein For the human-machine operation interface (7), the product number to be detected is pre-set according to the product parameters. When entering the human-machine operation interface during detection, click to select the product model to be detected to start the detection work.

4. The fully automated static pressure detection method for a jack according to claim 1, characterized in that, The pressurizing manipulator (2) is installed on the bracket of the pressurizing manipulator (2) and is used to grasp the upper piston rod of the jack and perform a pressurizing operation on the piston rod. Based on the elevation distance and number of times of the pressurizing manipulator (2), the pressure value applied by the pressurizing manipulator (2) to the jack is calculated.

5. The fully automated static pressure detection method for a jack according to claim 1, characterized in that, The pressurizing manipulator (2) pressurizes the jack pump body according to the product model selected on the human-machine operation interface (7). The jacking force generated by the jack piston rod is fed back to the pressure sensor (1). The value of the pressure sensor (1) and the pressure value applied by the pressurizing manipulator (2) to the jack are compared with the set value to check whether the static pressure of the jack is qualified.

6. The fully automated static pressure detection method for a jack according to claim 1, characterized in that, The electric servo pressure regulating device (3) is used to calculate based on the existing pressure value and the factory-set value, control the torque and the number of turns of the wrench rotation through the servo motor, and adjust the equipment to the factory-set pressure value.

7. The fully automated static pressure detection method for a jack according to claim 1, wherein The vision system (4) uses a 2D planar camera. After the jack completes the jacking pressure, it takes a photo of the pressure regulating knob to find the adjustment position of the pressure regulating knob, obtains the accurate position, and then the electric servo pressure regulating device (3) performs pressure regulation.

8. The fully automated hydrostatic testing method for a jack according to claim 1, wherein, The six-axis robot material handling device (5) is used to place the jack in the test area. After the jack completes the pressure test, it grabs the jack and places it under the pressure relief device (6) for pressure relief, and then transports the jack away from the detection platform (8). The qualified jacks are placed in the qualified product storage area, and the unqualified jacks are placed in the unqualified product storage area.

9. The fully automated hydrostatic testing method for a jack according to claim 1, characterized in that, The pressure relief device (6) is used to perform a pressure relief operation on the jack that has completed the pressure test.

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