Tension and service life testing equipment for straight stroke actuator

Abstract

The utility model provides tension and service life testing equipment for a straight stroke actuator, which is characterized in that a counterweight cabinet is arranged in a supporting platform, a lower thread of a long connecting rod is fixed with a counterweight cabinet threaded hole, an upper thread of the long connecting rod is fixed with a lower threaded hole of a tension sensor, and a thread of a short connecting rod is fixed with an upper threaded hole of the tension sensor; the upper portion of the short connecting rod extends out of a central hole of the supporting platform, a clamping groove is formed in the upper end of the short connecting rod and fixed to an output shaft of the straight stroke actuator, and the tension sensor is connected with a digital displayer through a cable. The device has the advantages that the pull force of the straight stroke actuator is measured more accurately and effectively through actual lifting of the balance weight, when the balance weight exceeds the lifting capacity of the straight stroke actuator, signals transmitted by the sensor reach the digital display, and the actual pull force of the current straight stroke actuator can be known by reading numerical values on the digital display.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve test equipment field, specifically is a straight stroke actuator's tension and life test equipment. BACKGROUND

[0002] In the valve industry, according to the working mode of valve core, it is divided into several types such as rotary type, lifting type etc. Among them, the valve core does the up-down lifting operation, and the valve has regulating valve, gate valve, stop valve etc. The electric drive device corresponding to this type of valve is straight stroke actuator. According to the standard requirements, the straight stroke actuator applied to this type of valve should be tested before leaving the factory, and the running life of the actuator should be tested according to the batch. The main function of the tension test equipment on the market is not complete, they test the tension of the straight stroke actuator through the tension sensor, which does not meet the actual demand, does not meet the standard requirements and the test result is unreliable. Therefore, the reasonable and convenient test equipment becomes the key to the performance test of the actuator. SUMMARY

[0003] To solve the above technical problems, the utility model provides a straight stroke actuator's tension and life test equipment, so that the data obtained by testing is closer to the actual situation and more accurate.

[0004] The utility model solves the problem through the following scheme: a straight stroke actuator's tension and life test equipment, including support platform, counterweight cabinet, long connecting rod, short connecting rod, the support platform, inside be provided with counterweight cabinet, long connecting rod's lower thread is fixed with counterweight cabinet threaded hole, long connecting rod's upper thread is fixed with tension sensor lower threaded hole, short connecting rod's thread is fixed with tension sensor's upper threaded hole, short connecting rod's upper portion passes through the central hole of support platform and extends, and the upper end of short connecting rod has a clamping groove, which is fixed with the output shaft of the straight stroke actuator, and the tension sensor is connected with the digital display through the cable.

[0005] Further, for different specifications of straight stroke actuator, the lower thread position of long connecting rod can be adjusted to adapt to the output shaft stroke of straight stroke actuator.

[0006] The utility model has the advantages that: by actually lifting the counterweight, the tension of the straight stroke actuator is measured more accurately and effectively, when the counterweight exceeds the lifting capacity of the straight stroke actuator, the signal transmitted by the sensor reaches the digital display, and the value on the digital display can also understand the actual tension of the straight stroke actuator at the moment. BRIEF DESCRIPTION OF DRAWINGS

[0007] Fig. 1 is an assembly drawing of the utility model.

[0008] Fig. 2 is a support platform schematic diagram of the utility model.

[0009] Figure 3 is the counterweight cabinet schematic diagram of the utility model.

[0010] Figure 4 is the long connecting rod diagram of the utility model.

[0011] Figure 5 is the tension sensing structure diagram of the utility model.

[0012] Figure 6 is the short connecting rod diagram of the utility model. DETAILED DESCRIPTION

[0013] The following six drawings of figure 1, figure 2, figure 3, figure 4, figure 5, figure 6 are used to explain the structure and working principle of the tension and service life testing equipment of a straight stroke actuator in detail.

[0014] Figure 2 is the support platform (1), and the upper plate has a support platform central hole (101) in the middle.

[0015] Figure 3 is the counterweight cabinet (2), and the upper plate has a counterweight cabinet threaded hole (201) in the middle.

[0016] Figure 4 is the long connecting rod (3), and the lower end of the long connecting rod (3) is the lower thread (301) of the long connecting rod, and the upper end of the long connecting rod (3) is the upper thread (302) of the long connecting rod.

[0017] Figure 5 is a tension sensing structure diagram, and the upper end of the tension sensor (405) is a tension sensor upper threaded hole (401), and the lower end of the tension sensor (405) is a tension sensor lower threaded hole (402), one end of the cable (403) is connected with the tension sensor (405), and the other end is connected with a digital display (404).

[0018] Figure 6 is the short connecting rod (5), and the lower end is a threaded hole (501), and the upper end is a clamping groove (502).

[0019] Figure 1 is the assembly drawing of the utility model, a straight stroke actuator tension and life test equipment, including support platform (1), counterweight cabinet (2), long connecting rod (3), short connecting rod (5), the support platform (1) inside is located counterweight cabinet (2), long connecting rod's lower thread (301) and counterweight cabinet threaded hole (201) are fixed, long connecting rod's upper thread (302) and tension sensor lower threaded hole (402) are fixed. The thread (501) of short connecting rod (5) is fixed with the upper threaded hole (401) of tension sensor, the upper clamping groove (502) of short connecting rod (5) is stretched through support platform central hole (101), the upper end clamping groove (502) of short connecting rod (5) is fixed with the output shaft of straight stroke actuator (hereinafter referred to as measured product), for different specifications of measured product, the output shaft stroke of measured product can be adapted by adjusting the position of long connecting rod's lower thread (301), tension sensor (405) is connected with digital display (404) through cable (403), and the tension data is transmitted to digital display (404) in real time during the test process, and the tension value of straight stroke actuator can be directly observed.

[0020] In use, the measured product is placed on the support platform (1), the external circuit controls the on-off state of the measured product, the output shaft of the measured product moves up and down, drives the short connecting rod (5), the tension sensor (405), the long connecting rod (3) and the counterweight cabinet (2) with the counterweight move up and down with the output shaft, the weight of the counterweight is adjusted to observe the tension of the measured product. If the measured product cannot pull the counterweight cabinet (2) to run, the value on the digital display (404) can be directly read to understand the tension value provided by the measured product.

[0021] The straight stroke actuator tension and life test equipment provided by the utility model, any modification based on this structure is equivalent to replacement and improvement, and is included in the protection scope of the utility model.

Claims

1. A pull force and life test device for straight stroke actuators, comprising a support platform (1), a counterweight cabinet (2), a long connecting rod (3), a short connecting rod (5), characterized in that: The support platform (1) inside sits counterweight cabinet (2), long connecting rod lower thread (301) and counterweight cabinet threaded hole (201) are fixed, long connecting rod upper thread (302) and tension sensor lower threaded hole (402) are fixed, short connecting rod (5) threaded hole (501) and tension sensor upper threaded hole (401) are fixed, short connecting rod (5) upper clamping groove (502) is stretched out through support platform central hole (101), short connecting rod (5) upper end clamping groove (502) and straight stroke actuator output shaft are fixed, and tension sensor (405) is connected with digital display (404) through cable (403).

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