A ball valve casting strength testing mechanism

Abstract

The utility model provides a ball valve casting strength test mechanism relates to ball valve strength test field, include: positioning module, positioning module is by clamp mechanism, joint control mechanism and locking mechanism are composed, and positioning module has quick mode and locking mode, can choose as needed, two casting clamping blocks do not have locking function and can move fast in the inside of mounting seat under quick mode, make things convenient for two casting clamping blocks fast movement suitable position and use, under locking mode, two casting clamping blocks have fine adjustment and locking function, guarantee ball valve casting is stably clamped and positioned, two kinds of mode switch fast, test efficiency improves greatly, solved the existing ball valve casting strength test mechanism in the fixture adjusting rate is slow, the size difference of the outer diameter, length etc. of different model castings is remarkable, makes the fixture difficultly fast adjustment to the clamping range of adaptation, the problem of slow efficiency.

Description

Technical Field

[0001] This utility model relates to the field of ball valve strength testing technology, and in particular to a ball valve casting strength testing mechanism. Background Technology

[0002] Ball valve castings are the metal casting components that make up a ball valve, including the valve body and valve cover. Their strength directly affects the safe operation and service life of the ball valve. To ensure that the ball valve does not deform or crack under high pressure and high temperature conditions, it is necessary to conduct strength tests. During the test, pressure is usually applied to the surface of the ball valve casting by a hydraulic rod to simulate the stress conditions in actual operation. At the same time, the pressure change and the state of the casting are monitored to evaluate the strength. In this process, in order to ensure that the hydraulic rod is applied at an accurate position and that the casting is stable and does not shake, a fixture is needed to position the ball valve casting to facilitate the smooth operation of the test.

[0003] The clamps in existing ball valve casting strength testing mechanisms mostly adopt a threaded adjustment and locking structure similar to a bench vise. The clamping is achieved by rotating a screw to drive the jaws to open and close. Although this structure can provide a stable locking force, the adjustment process requires continuous rotation of the screw, resulting in a slow adjustment rate. Since the strength testing of castings often needs to be adapted to various models of ball valve castings, and the outer diameter, length and other dimensions of different models of castings vary significantly, it is difficult for the clamp to be quickly adjusted to the appropriate clamping range, resulting in slow efficiency and poor flexibility and practicality. Utility Model Content

[0004] This utility model relates to a ball valve casting strength testing mechanism, which has testing components. The pressure mechanism enables the strength testing of the ball valve casting after it has been clamped and positioned by the positioning module. It is convenient and flexible to use. The positioning module has a fast mode and a locking mode, which can be selected as needed. In the fast mode, the two casting clamps do not have a locking function and can move quickly inside the mounting base, making it convenient for the two casting clamps to be quickly moved to a suitable position for use. In the locking mode, the two casting clamps have both fine adjustment and locking functions, ensuring that the ball valve casting is stably clamped and positioned. The two modes can be switched quickly, greatly improving the testing efficiency and providing high flexibility and practicality.

[0005] This utility model provides a ball valve casting strength testing mechanism, specifically including: a testing component, which consists of a pressure mechanism and a positioning module, and the positioning module consists of a clamping mechanism, a control mechanism and a locking mechanism; The pressure mechanism includes a test platform, a mounting frame, and a test push rod. The mounting frame is fixedly installed on the side of the test platform, and the test push rod is fixedly installed on the top of the mounting frame. The clamping mechanism includes a mounting base and two casting clamping blocks. The mounting base is fixedly installed on the top of the test platform, and the two casting clamping blocks are symmetrically inserted into the top of the mounting base. The control mechanism includes a control lever and an operating lever. The control lever is rotatably connected inside the mounting base, and the operating lever is inserted into the side of the mounting base. The locking mechanism includes a locking worm gear and a fine-tuning worm. The locking worm gear is rotatably connected inside the mounting base, and the fine-tuning worm is rotatably connected inside the mounting base. The fine-tuning worm and the locking worm gear are connected by a transmission.

[0006] Furthermore, the control lever, operating lever, and locking worm gear are arranged on the same axis.

[0007] Furthermore, the outer side of the control rod is provided with a spiral control groove, and the inner side of the casting clamping block is provided with a control protrusion, which is inserted into the inner side of the control groove.

[0008] Furthermore, one end of the operating lever is provided with a synchronization rod with a regular polygonal cross-section, and the side of the control lever is provided with a synchronization groove, into which the synchronization rod is inserted.

[0009] Furthermore, the synchronizing rod is provided with a locking spring inside, and the two ends of the locking spring are fixedly connected to the inside of the synchronizing rod and the inside of the control rod, respectively.

[0010] Furthermore, the locking worm gear has a locking tooth groove inside, and the operating rod has a locking gear outside. Under the action of the locking tension spring, the locking gear is inserted into the inside of the locking tooth groove.

[0011] This utility model provides a strength testing mechanism for ball valve castings, which has the following beneficial effects: The pressure mechanism enables strength testing of ball valve castings after they have been clamped and positioned by the positioning module. It is convenient and flexible to use, and the positioning module has a fast mode and a locking mode, which can be selected as needed. In fast mode, the two casting clamps do not have a locking function and can move quickly inside the mounting base, making it easy for the two casting clamps to be quickly moved to the appropriate position for use. In locking mode, the two casting clamps have both fine adjustment and locking functions, ensuring that the ball valve casting is stably clamped and positioned. The two modes can be switched quickly, greatly improving testing efficiency and enhancing the flexibility and practicality of the device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0013] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0014] In the attached diagram: Figure 1 A schematic diagram of the structure of this utility model is shown.

[0015] Figure 2 A schematic diagram of the internal structure of this utility model when it is in the locking mode is shown.

[0016] Figure 3 This utility model is shown Figure 2 Enlarged structural diagram of part A in the middle.

[0017] Figure 4 This utility model is shown Figure 2 Enlarged structural diagram of part B in the middle.

[0018] Figure 5 A schematic diagram of the internal structure of this invention in fast mode is shown.

[0019] Figure 6 This utility model is shown Figure 5 Enlarged structural diagram of part C in the middle.

[0020] List of reference numerals 1. Clamping mechanism; 101. Mounting base; 102. Casting clamping block; 1021. Interlocking protrusion; 2. Interlocking mechanism; 201. Interlocking lever; 2011. Interlocking slot; 2012. Synchronization slot; 202. Operating lever; 2021. Synchronization lever; 2022. Locking spring; 2023. Locking gear; 3. Locking mechanism; 301. Locking worm gear; 3011. Locking tooth groove; 302. Fine-tuning worm; 4. Pressure mechanism; 401. Test platform; 402. Mounting stand; 403. Test push rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please refer to Figures 1 to 6 Example 1: This utility model proposes a ball valve casting strength testing mechanism, including: a testing component, which consists of a pressure mechanism 4 and a positioning module, and the positioning module consists of a clamping mechanism 1, a control mechanism 2 and a locking mechanism 3; The pressure mechanism 4 includes a test platform 401, a mounting bracket 402, and a test push rod 403. The mounting bracket 402 is fixedly installed on the side of the test platform 401, and the test push rod 403 is fixedly installed on the top of the mounting bracket 402. The positioning module can clamp and position the ball valve casting to be tested at the bottom of the test push rod 403. By controlling the test push rod 403 to move down and abut against the ball valve casting, pressure can be applied to the ball valve casting to achieve the function of strength testing of the ball valve casting. The test is convenient and fast. The clamping mechanism 1 includes a mounting base 101 and two casting clamping blocks 102. The mounting base 101 is fixedly installed on the top of the test platform 401. The two casting clamping blocks 102 are symmetrically inserted into the top of the mounting base 101; the control mechanism 2 includes a control rod 201 and an operating rod 202, the control rod 201 is rotatably connected inside the mounting base 101, and the operating rod 202 is inserted into the side of the mounting base 101; the locking mechanism 3 includes a locking worm gear 301 and a fine-tuning worm 302, the locking worm gear 301 is rotatably connected inside the mounting base 101, and the fine-tuning worm 302 is rotatably connected inside the mounting base 101, and the fine-tuning worm 302 and the locking worm gear 301 are connected by transmission; the control rod 201, the operating rod 202 and the locking worm gear 301 are arranged on the same axis.

[0023] The operating lever 202 has a synchronizing rod 2021 with a regular polygonal cross-section at one end, and a synchronizing groove 2012 on the side of the control lever 201. The synchronizing rod 2021 is inserted into the synchronizing groove 2012. A locking spring 2022 is installed inside the synchronizing rod 2021, and its two ends are fixedly connected to the inside of the synchronizing rod 2021 and the control lever 201, respectively. A locking worm gear 301 has a locking tooth groove 3011 inside, and a locking gear 2023 is installed outside the operating lever 202. Under the action of the locking spring 2022, the locking gear 2023 is inserted into the locking tooth groove 3011. In use, when the operating lever 202 is not pulled by external force, the positioning module is in the locking mode. Under the action of the locking spring 2022, the locking gear 2023 is inserted into the locking tooth groove 3011, thus... At this time, the locking worm gear 301 and the operating lever 202 are used as a whole. When locking or loosening operations are required, simply rotate the fine-tuning worm gear 302. When the fine-tuning worm gear 302 rotates, it drives the locking worm gear 301 to rotate. When the locking worm gear 301 rotates, it drives the operating lever 202 to rotate. When the operating lever 202 rotates, the synchronizing rod 2021 drives the control rod 201 to rotate through the synchronizing groove 2012. When the control rod 201 rotates, the control groove 2011 drives the casting clamping block 102 to move and change its position through the control protrusion 1021. Since the worm gear mechanism is a reduction mechanism and has self-locking characteristics, the casting clamping block 102 moves slowly and has a positioning function in the locking mode, thereby realizing the clamping, positioning and loosening operations of the ball valve casting, ensuring the stability and accuracy of subsequent strength tests.

[0024] The control lever 201 has a spiral-shaped control groove 2011 on its exterior, and the casting clamp 102 has a control protrusion 1021 inside. The control protrusion 1021 is inserted into the control groove 2011. In use, when the rapid movement and positioning of the casting clamp 102 is required using the positioning module's fast mode, simply pull and rotate the operating lever 202. When the operating lever 202 is pulled, the locking gear 2023 disengages from the locking tooth groove 3011 and stretches the locking spring 2022, releasing the overall relationship between the locking worm gear 301 and the operating lever 202. Afterwards, the operation... The operating lever 202 can rotate independently of the locking worm gear 301. When the operating lever 202 rotates, it can drive the control lever 201 to rotate. When the control lever 201 rotates, it can drive the casting clamping block 102 to move and position quickly inside the mounting base 101 under the action of the control groove 2011 and the control protrusion 1021. When the casting clamping block 102 moves to the appropriate position, the operating lever 202 can be released. After the operating lever 202 is released, the positioning module will return to the locking mode under the action of the locking spring 2022 for use, so as to facilitate subsequent fine-tuning and other operations. It is convenient and flexible to use.

[0025] The working principle of this embodiment is as follows: The positioning module can clamp and position the ball valve casting to be tested at the bottom of the test push rod 403. By controlling the test push rod 403 to move downwards and abut against the ball valve casting, pressure is applied to the ball valve casting, thus achieving the function of strength testing of the ball valve casting. When the operating rod 202 is not pulled by external force, the positioning module is in the locking mode. Under the action of the locking spring 2022, the locking gear 2023 is inserted into the inside of the locking tooth groove 3011. Therefore, the locking worm gear 301 and the operating rod 202 are used as a whole. When needed... To perform locking or unlocking operations, simply rotate the fine-tuning worm gear 302. When the fine-tuning worm gear 302 rotates, it drives the locking worm wheel 301 to rotate. The locking worm wheel 301, in turn, drives the operating lever 202. When the operating lever 202 rotates, the synchronizing rod 2021, through the synchronizing groove 2012, drives the control lever 201 to rotate. When the control lever 201 rotates, the control groove 2011, through the control protrusion 1021, moves the casting clamp 102 to change its position. Because the worm gear mechanism is a reduction mechanism and has self-locking characteristics, thus… In the locking mode, the casting clamping block 102 moves slowly and has a positioning function, thus enabling clamping, positioning, and releasing operations on the ball valve casting, ensuring the stability and accuracy of subsequent strength testing. When the fast mode of the positioning module is needed for rapid movement and positioning of the casting clamping block 102, simply pull and rotate the operating lever 202. When the operating lever 202 is pulled, the locking gear 2023 disengages from the locking tooth groove 3011 and stretches the locking spring 2022, releasing the overall relationship between the locking worm gear 301 and the operating lever 202. Subsequent operations... The lever 202 can rotate independently of the locking worm gear 301. When the lever 202 rotates, it can drive the control lever 201 to rotate. When the control lever 201 rotates, it can drive the casting clamping block 102 to move and position quickly inside the mounting base 101 under the action of the control groove 2011 and the control protrusion 1021. When the casting clamping block 102 moves to the appropriate position, the lever 202 can be released. After the lever 202 is released, the positioning module will return to the locking mode under the action of the locking spring 2022 for use, so as to facilitate subsequent fine-tuning and other operations.

Claims

1. A strength testing mechanism for ball valve castings, characterized in that, include: The test assembly consists of a pressure mechanism (4) and a positioning module, wherein the positioning module consists of a clamping mechanism (1), a control mechanism (2), and a locking mechanism (3); The pressure mechanism (4) includes a test platform (401), a mounting bracket (402), and a test push rod (403). The mounting bracket (402) is fixedly installed on the side of the test platform (401), and the test push rod (403) is fixedly installed on the top of the mounting bracket (402). The clamping mechanism (1) includes a mounting base (101) and two casting clamping blocks (102). The mounting base (101) is fixedly installed on the top of the test platform (401), and the two casting clamping blocks (102) are symmetrically inserted into the top of the mounting base (101). The control mechanism (2) includes a control lever (201) and an operating lever (202). The control lever (201) is rotatably connected inside the mounting base (101), and the operating lever (202) is inserted into the side of the mounting base (101). The locking mechanism (3) includes a locking worm gear (301) and a fine-tuning worm (302). The locking worm gear (301) is rotatably connected inside the mounting base (101), and the fine-tuning worm (302) is rotatably connected inside the mounting base (101). The fine-tuning worm (302) and the locking worm gear (301) are connected by a transmission.

2. The ball valve casting strength testing mechanism according to claim 1, characterized in that, The control lever (201), operating lever (202), and locking worm gear (301) are arranged on the same axis.

3. The ball valve casting strength testing mechanism according to claim 2, characterized in that, The control rod (201) has a spiral control groove (2011) on its outside, and the casting clamp (102) has a control protrusion (1021) inside, which is inserted into the control groove (2011).

4. The ball valve casting strength testing mechanism according to claim 3, characterized in that, One end of the operating lever (202) is provided with a synchronization rod (2021) with a cross-section of a regular polygon, and the side of the control lever (201) is provided with a synchronization groove (2012), and the synchronization rod (2021) is inserted into the inside of the synchronization groove (2012).

5. The ball valve casting strength testing mechanism according to claim 4, characterized in that, The synchronizing rod (2021) is equipped with a locking spring (2022) inside, and the two ends of the locking spring (2022) are fixedly connected to the inside of the synchronizing rod (2021) and the inside of the control rod (201), respectively.

6. The ball valve casting strength testing mechanism according to claim 5, characterized in that, The locking worm gear (301) has a locking tooth groove (3011) inside, and the operating lever (202) has a locking gear (2023) outside. Under the action of the locking tension spring (2022), the locking gear (2023) is inserted into the inside of the locking tooth groove (3011).

Images