CN203385566U - Multifunctional intelligent hydraulic jack testing machine - Google Patents

Abstract

The utility model relates to a multifunctional intelligent hydraulic jack testing machine, which is mainly suitable for the performance detection of the hydraulic jack. The utility model comprises a hydraulic control system, a frame, a data acquisition system and a computer, and is characterized in that: an operating oil cylinder and a load oil cylinder are installed on the frame, and both the operation oil cylinder and the load oil cylinder are connected with the hydraulic control system; the described Displacement sensor one and load cell one are installed on the operation oil cylinder, displacement sensor two and load cell two are installed on the load oil cylinder; Described displacement sensor one, displacement sensor two, force sensor one and force sensor two are all connected The data acquisition system is connected, and the data acquisition system is connected with the computer. The utility model utilizes hydraulic pressure, sensing and information technology to automatically identify and judge the data obtained from the inspection jack, and besides giving the inspection conclusion, it can also analyze and obtain the common specific failure causes.

Description

A multifunctional intelligent hydraulic jack testing machine

technical field

The utility model relates to a multifunctional intelligent hydraulic jack testing machine, which is mainly suitable for the performance testing of the hydraulic jack and belongs to the field of inspection and testing equipment.

Background technique

The hydraulic jack is a commonly used hydraulic lifting tool. When the product is manufactured, sold and used, it is often necessary to carry out objective and scientific testing and evaluation of the performance of the product. In the prior art, the detection equipment can only simulate the load force and manual operation, and manual analysis and judgment are required for the problems that arise, which has the problems of low detection efficiency and low degree of automation.

Chinese Patent No. 201210306394 discloses a patent titled "Hydraulic Jack Test Device", which does not require the tester to match the pump core of the hydraulic jack to be tested with the pump core actuator, thereby reducing the tester's work intensity and being able to Two hydraulic jacks are tested at the same time, which improves the efficiency, but still requires more manual operations and analysis and judgment, and the degree of automation is low, so the above-mentioned defects in the prior art are not overcome.

Chinese Patent No. 200910096088 discloses a patent named "Dynamic Jack Load Pre-Test System". The hydraulic system simulates the dynamic load of the jack, automatically records the changes in the pressure and stroke of the jack during the lifting process, and pre-tests the jack to speed up the pre-test. The effect of testing speed and reducing labor intensity, but it only monitors the load, and it is only a pre-test of the dynamic data record for the jack. The data is not sufficient, and the obtained data cannot be automatically identified and judged, and common faults cannot be analyzed. Reason, does not overcome above-mentioned defect in the prior art well.

Utility model content

The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art, and provide a multifunctional intelligent hydraulic jack testing machine with reasonable structure design, high detection efficiency, high degree of automation, and strong data combination and analysis ability.

The technical scheme adopted by the utility model to solve the above-mentioned problems is: the multifunctional intelligent hydraulic jack testing machine includes: a hydraulic control system, a frame, a data acquisition system and a computer, and is characterized in that: the frame is equipped with The operation oil cylinder and the load oil cylinder are connected with the hydraulic control system; the operation oil cylinder is equipped with a displacement sensor one and a force sensor one, and a displacement sensor two and a force sensor two are installed on the load oil cylinder; The first displacement sensor, the second displacement sensor, the first load cell and the second load cell are all connected to the data acquisition system, and the data acquisition system is connected to the computer. The hydraulic control system provides pressure to the operation cylinder and the load cylinder. The operation cylinder acts on the handle of the jack to simulate manual handle operation; the load cylinder acts on the load-bearing part of the jack to simulate the load condition; the displacement sensor one and the force sensor one measure the operation cylinder Displacement value and force value, displacement sensor 2 and force sensor 2 measure the displacement value and force value of the load cylinder; the data acquisition system collects the data of displacement sensor 1, displacement sensor 2, force sensor 1 and force sensor 2, and the computer Automatically identify and judge the data collected by the data acquisition system, and analyze the cause of the failure.

The operation oil cylinder and the load oil cylinder described in the utility model are installed on the top of the frame, the displacement sensor one and the force sensor one are installed at the bottom of the operation oil cylinder, and the displacement sensor two and the force sensor two are installed at the bottom of the load cylinder.

During the utility model test, following several situations and analysis results are arranged:

(1) When the jack is at the lifting position, apply a constant load within the specified time: if the lower displacement of the load cylinder is within the set value, the jack is qualified; if the lower displacement of the load cylinder exceeds the set value, the force value of the operating cylinder will appear If the displacement value changes, the one-way valve at the outlet of the jack is poorly sealed; if the load cylinder’s descending displacement exceeds the set value, and the force value and displacement value of the operating cylinder do not change, then the jack piston seal is poor or the cylinder bottom seal is poor;

(2) When the jack is in the lifting position, open the oil return valve, and the load cylinder is pressed down at a constant speed: if the force value is within the specified range during the descent process, and there is no obvious change in the force value, the jack is qualified; If the value exceeds the specified value, but there is no obvious change, the jack seal assembly is bad; if there is a sudden change in the force value, the straightness of the jack cylinder is bad;

(3) When the jack is under load, the telescopic action of the operating cylinder: if the lifting amount of the loaded cylinder is greater than the specified value after one operation, and the operating force value of the operating cylinder is displayed near the zero value after the operating cylinder retracts to near the neutral position, the jack is qualified ; If the rise of the load cylinder does not reach the specified value, the oil suction failure of the jack pump core or the setting value of the load limit valve is too low; if the operating force value shows the pressure value, the jack outlet check valve is not well sealed; If the tensile value is displayed, the one-way valve at the oil suction port of the jack is not well sealed;

(4) When locking the load cylinder, operate the telescopic action of the cylinder: if the force variation range of the load cylinder is within the specified value range, the jack is qualified; if the minimum value of the force value is less than the lower limit of the specified range, the jack spring pressure adjustment is too low; If the maximum value of the force value is greater than the upper limit of the specified range, the pressure adjustment of the jack spring is too high; if the range of variation exceeds the specified range, the stiffness of the jack spring is too large.

Compared with the prior art, the utility model has the following advantages and effects: the testing machine utilizes hydraulic pressure, sensing and information technology to automatically identify and judge the data obtained from the inspection jack, and besides giving the inspection conclusion, it can also analyze Identify the common causes of specific failures.

Description of drawings

Fig. 1 is a schematic diagram of a test system of the present invention.

In the figure: hydraulic control system 1, rack 2, data acquisition system 3, computer 4, jack 5, operating cylinder 21, load cylinder 22, displacement sensor 1 23, displacement sensor 2 24, force sensor 1 25, force sensor Two 26.

Detailed ways

Below in conjunction with accompanying drawing and through embodiment the utility model is further described.

Referring to Fig. 1, present embodiment comprises: hydraulic control system 1, frame 2, data acquisition system 3 and computer 4, wherein, the top of described frame 2 is equipped with operating oil cylinder 21 and load oil cylinder 22, operating oil cylinder 21 and The load cylinders 22 are all connected with the hydraulic control system 1; the bottom of the operating cylinder 21 is equipped with a displacement sensor one 23 and a load cell one 25, and the bottom of the load cylinder 22 is equipped with a displacement sensor two 24 and a force sensor two 26; The first displacement sensor 23 , the second displacement sensor 24 , the first load cell 25 and the second load cell 26 are all connected to the data acquisition system 3 , and the data acquisition system 3 is connected to the computer 4 .

In this embodiment, the hydraulic control system 1 provides hydraulic oil to the operation cylinder 21 and the load cylinder 22, the operation cylinder 21 acts on the handle of the jack, and the load cylinder 22 acts on the load-bearing part of the jack; the displacement sensor one 23 and load cell one 25 measure the displacement value and the force value of the operation cylinder 21, and the displacement sensor two 24 and the load cell two 26 measure the displacement value and the force value of the load cylinder 22; the data acquisition system 3 collects the displacement sensor one 23. For the data of displacement sensor 2 24 , force sensor 1 25 and force sensor 2 26 , the computer 4 automatically recognizes and judges the data collected by the data acquisition system 3 to analyze the cause of the failure.

The working process of the present utility model is as follows: the load oil cylinder 22 realizes the simulation of the jack load condition by the hydraulic control system 3, and its displacement value and force value are collected to the data acquisition system by the displacement sensor two 24 and the force sensor two 26; the operation oil cylinder 21 The operation of the jack handle is realized through the hydraulic control system 3 telescopic actions, and its displacement value and force value are collected to the data acquisition system 3 through the displacement sensor one 23 and the load cell one 25; the data collected by the computer 4 to the data acquisition system 3 is as follows The model analyzes and judges:

The hydraulic control system 1, frame 2, data acquisition system 3, displacement sensor 1 23, displacement sensor 2 24, force sensor 1 25 and force sensor 2 26 described in this specification all adopt the well-known method of those skilled in the art. Both structure and principle are prior art.

Those skilled in the art can implement the above description.

In addition, it should be noted that, in the specific embodiments described in this specification, as long as the specific specifications of the components are not clearly specified, the components can be of any specification suitable for their functions; at the same time, the names of the components can also be different. . All equivalent or simple changes made according to the structure, features and principles described in the concept of the utility model are included in the protection scope of the utility model patent.

Claims (2)

1. A multifunctional intelligent hydraulic jack testing machine, comprising a hydraulic control system, a frame, a data acquisition system and a computer, is characterized in that: an operating oil cylinder and a load oil cylinder are installed on the described frame, and the operating oil cylinder and the load The oil cylinders are all connected with the hydraulic control system; a displacement sensor one and a force sensor one are installed on the operating cylinder, and a displacement sensor two and a force sensor two are installed on the load cylinder; the displacement sensor one, the displacement sensor two, The first load cell and the second load cell are connected to a data acquisition system, and the data acquisition system is connected to a computer. 2. The multifunctional intelligent hydraulic jack testing machine according to claim 1, characterized in that: the operating cylinder and the load cylinder are installed on the top of the frame, and the displacement sensor one and the force sensor one are installed on the operating cylinder The lower part of the load cylinder, the second displacement sensor and the second load cell are installed on the lower part of the load cylinder.

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