Tensile test device for pulse generator servo valve

Abstract

The present invention relates to a tension test device for a pulse generator servo valve, comprising a hollow fixed outer cylinder and a screen outer cylinder, the fixed outer cylinder and the screen outer cylinder are threadedly connected, the pulse generator servo valve to be subjected to tension test is arranged in the screen outer cylinder, a dynamometer is arranged in the fixed outer cylinder, the rear end of the dynamometer is connected to one end of the fixed outer cylinder, the front end of the dynamometer is connected to a connecting rod, the front end of the connecting rod is connected to a valve stem connector, a concave cavity matching the valve stem of the pulse generator servo valve is arranged in the front end surface of the valve stem connector, and a top screw for locking the lateral movement of the valve stem is arranged on the front end side of the valve stem connector. It has a simple structure and is easy to use, and can be automatically tested after manual connection, thereby improving the accuracy of the test.

Description

[Technical field]

[0001] The invention relates to the technical field of pulse generator servo valves, and in particular to a tension testing device for pulse generator servo valves. [Background technology]

[0002] The pulse generator servo valve is a valve controlled by a circuit. It is divided into two types: power on, power off, power off, and power on, power off, power off, power on. It works by pulling a valve with an electromagnet and a return spring inside.

[0003] After the pulse generator servo valve is manufactured, it is necessary to test its suction force, that is, use a dynamometer to pull the valve stem of the battery valve, and then manually pull the dynamometer and drive the valve stem to record the tension value displayed on the dynamometer when the valve stem is pulled, so as to detect the suction force of the pulse generator servo valve.

[0004] In the above process, the valve stem is pulled manually, which not only consumes manpower but also has unstable force, which reduces the accuracy of detection. Therefore, there is room for improvement. [Summary of the invention]

[0005] In order to solve the above problems, the object of the present invention is to provide a tension testing device for a pulse generator servo valve which can save manpower and improve the accuracy of detection.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a tension testing device for a pulse generator servo valve, comprising a hollow fixed outer cylinder and a screen outer cylinder, the fixed outer cylinder and the screen outer cylinder are threadedly connected to each other, the pulse generator servo valve required for tension testing is arranged in the screen outer cylinder, a dynamometer is arranged in the fixed outer cylinder, the rear end of the dynamometer is connected to one end of the fixed outer cylinder, the front end of the dynamometer is connected to a connecting rod, the front end of the connecting rod is connected to a valve stem connecting piece, the front end surface of the valve stem connecting piece is provided with a concave cavity matching the valve stem of the pulse generator servo valve, and the front end side of the valve stem connecting piece is provided with a top screw for locking the lateral movement of the valve stem.

[0007] The tensile testing device for the pulse generator servo valve in the present invention is further configured as follows: a hexagonal nut is provided at the end of the valve stem, a hexagonal groove matching the hexagonal nut is provided in the front end face of the valve stem connecting piece, the depth of the hexagonal groove is greater than the thickness of the hexagonal nut, the top screw is located on the peripheral wall of the hexagonal groove, and when the top screw extends into the inner wall of the hexagonal groove, it is located on the outside of the hexagonal nut and fits with the outer wall of the hexagonal nut.

[0008] The tensile testing device for the pulse generator servo valve in the present invention is further configured as follows: an adjusting screw plug is threadedly connected in the outer cylinder of the screen, the adjusting screw plug is a hollow structure, the connecting rod is passed through the adjusting screw plug, and the rear end face of the valve stem connector is in conflict with the end face of the adjusting screw plug.

[0009] The tension testing device for the pulse generator servo valve in the present invention is further configured as follows: an adjusting screw is threadedly arranged at the rear end of the fixed outer cylinder, an adjusting knob is arranged at the rear end of the adjusting screw, and the front end of the adjusting screw is connected to the dynamometer.

[0010] The tensile testing device for the pulse generator servo valve of the present invention is further configured as follows: the middle section of the fixed outer cylinder is a semicircular opening structure.

[0011] Compared with the prior art, the present invention has the following beneficial effects: the above-mentioned tension testing device for the pulse generator servo valve has a simple structure and is easy to use. It can automatically perform the test after manual connection. It adopts a reliable structure to achieve a firm connection between the valve stem of the pulse generator servo valve and the dynamometer, and can be adjusted according to different pulse generator servo valve structures to adapt to different types of pulse generator servo valves. The tension testing device can perform tension testing on the pulse generator servo valve in the horizontal direction, avoiding the influence of gravity factors on the test results and improving the accuracy of the test.

Brief Description of the Drawings

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure in the AA direction.

[0014] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure in the BB direction.

[0015] In the figure: 1. fixed outer cylinder, 2. screen outer cylinder, 3. pulse generator servo valve, 4. dynamometer, 5. adjusting screw, 6. adjusting knob, 7. connecting rod, 8. valve stem connector, 9. valve stem, 10. top screw, 11. hexagonal nut, 12. hexagonal groove, 13. adjusting screw plug. [Specific implementation method]

[0016] The tensile testing device for a pulse generator servo valve according to the present invention is further described in detail below through specific embodiments.

[0017] like Figure 1As shown, the tensile testing device for the pulse generator servo valve comprises a hollow fixed outer cylinder 1 and a screen outer cylinder 2, the fixed outer cylinder 1 and the screen outer cylinder 2 are threadedly connected, the pulse generator servo valve 3 required for the tensile test is arranged in the screen outer cylinder 2, and the fixed outer cylinder 1 is provided with a dynamometer 4, as shown in FIG. Figure 3 As shown, the middle section of the fixed outer cylinder 1 is a semicircular opening structure. This facilitates the connection and observation of the dynamometer 4. The rear end of the dynamometer 4 is connected to one end of the fixed outer cylinder 1, and the specific connection method is: the rear end of the fixed outer cylinder 1 is threaded with an adjusting screw 5, the rear end of the adjusting screw 5 is provided with an adjusting knob 6, the front end of the adjusting screw 5 is connected to the dynamometer 4, and the position of the dynamometer 4 can be fine-tuned by adjusting the knob 6. The front end of the dynamometer 4 is connected to a connecting rod 7, the front end of the connecting rod 7 is connected to a valve stem connector 8, the front end surface of the valve stem connector 8 is provided with a concave cavity that matches the valve stem 9 of the pulse generator servo valve 3, and the front end side of the valve stem connector 8 is provided with a top screw 10 for locking the lateral movement of the valve stem 9.

[0018] like Figure 2 As shown, the end of the valve stem 9 is provided with a hexagonal nut 11, and the front end surface of the valve stem 9 connector 8 is provided with a hexagonal groove 12 that matches the hexagonal nut 11. The depth of the hexagonal groove 12 is greater than the thickness of the hexagonal nut 11. The top screw 10 is located on the peripheral wall of the hexagonal groove 12. When the top screw 10 extends into the inner wall of the hexagonal groove 12, it is located on the outside of the hexagonal nut 11 and fits with the outer wall of the hexagonal nut 11. The circumferential locking between the valve stem 9 connector 8 and the valve stem 9 is achieved through the cooperation of the hexagonal groove 12 and the hexagonal nut 11, and the axial locking of the valve stem 9 is achieved through the top screw 10. Thus, a stable connection between the valve stem 9 of the pulse generator servo valve 3 and the dynamometer 4 is achieved.

[0019] As a preferred solution, an adjusting plug 13 is threadedly connected in the outer tube 2 of the screen, and the adjusting plug 13 is a hollow structure. The connecting rod 7 is inserted into the adjusting plug 13, and the rear end face of the valve stem connector 8 conflicts with the end face of the adjusting plug 13. Since the extension position of the valve stem 9 of each pulse generator servo valve 3 is inconsistent, the adjusting plug 13 can adjust the lateral position through the thread to ensure that the rear end face of the valve stem connector 8 conflicts with the end face of the adjusting plug 13, and then can be adjusted according to different structures of the pulse generator servo valve 3 to adapt to the tension test of different types of pulse generator servo valves 3.

[0020] The working principle of the present invention is: when in use, first set the pulse generator servo valve 3 to be tested in the screen outer tube 2, insert the valve stem 9 of the pulse generator servo valve 3 into the concave cavity of the valve stem connector 8, and then pass the tool through the sieve hole of the screen outer tube 2 to tighten the top screw 10, so as to achieve a stable connection between the valve stem 9 of the pulse generator servo valve 3 and the dynamometer 4, and then adjust the adjusting screw plug 13 according to the extended position of the valve stem 9 of the pulse generator servo valve 3, so that the rear end face of the valve stem connector 8 and the end face of the adjusting screw plug 13 are in conflict. Then the tensile test can be carried out. During the test, the pulse generator servo valve 3 is energized, the valve stem 9 of the pulse generator servo valve 3 moves, driving the valve stem connector 8 and the connecting rod 7 to move, and the dynamometer 4 can test the suction force of the pulse generator servo valve 3.

[0021] The above-mentioned embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A tensile testing device for a pulse generator servo valve, comprising a hollow fixed outer cylinder and a screen outer cylinder, wherein the fixed outer cylinder and the screen outer cylinder are threadedly connected, and a pulse generator servo valve to be subjected to a tensile test is arranged in the screen outer cylinder, and is characterized in that: A dynamometer is arranged in the fixed outer cylinder, the rear end of the dynamometer is connected to one end of the fixed outer cylinder, the front end of the dynamometer is connected to a connecting rod, the front end of the connecting rod is connected to a valve stem connector, the front end surface of the valve stem connector is provided with a concave cavity matching with the valve stem of the pulse generator servo valve, and the front end side of the valve stem connector is provided with a top screw for locking the lateral movement of the valve stem; a hexagonal nut is arranged at the end of the valve stem, and a hexagonal groove matching with the hexagonal nut is arranged in the front end surface of the valve stem connector, and the depth of the hexagonal groove is The degree is greater than the thickness of the hexagonal nut, and the top screw is located on the peripheral wall of the hexagonal groove. When the top screw extends into the inner wall of the hexagonal groove, it is located on the outside of the hexagonal nut and fits with the outer wall of the hexagonal nut; the screen outer cylinder is threadedly connected with an adjusting screw plug, the adjusting screw plug is a hollow structure, the connecting rod is passed through the adjusting screw plug, and the rear end face of the valve stem connecting piece conflicts with the end face of the adjusting screw plug; the rear end of the fixed outer cylinder is threadedly provided with an adjusting screw rod, the rear end of the adjusting screw rod is provided with an adjusting knob, and the front end of the adjusting screw rod is connected to the dynamometer.

2. The tensile testing device for a pulse generator servo valve according to claim 1, characterized in that: The middle section of the fixed outer cylinder is a semicircular opening structure.

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