Cast end cover pressure testing machine

Abstract

The utility model discloses a casting end cover pressure test machine, which relates to the technical field of end cover detection equipment and comprises a working table, two groups of end cover bodies arranged at the top of the working table, a bearing mechanism mounted at the top of the working table and used for bearing the end cover bodies, and a pressure test mechanism mounted at the top of the working table and used for performing pressure test on the end cover bodies, the bearing mechanism comprises a rotating disc rotationally arranged at the top of the workbench and two sets of sealing positioning seats fixedly arranged at the tops of the two ends of the rotating disc. The hydraulic cylinder stretches out and draws back to drive the pressure maintaining cover to ascend and descend, the descended pressure maintaining cover can be matched with the sealing positioning base at the bottom to conduct pressure testing and side detecting on the end cover body, high-pressure gas can be introduced into the end cover body through the high-pressure gas pipe hole, and therefore whether gas leakage air holes or tiny cracks exist in the cast end cover or not can be judged; the correcting mechanism can limit the position of the pressure maintaining cover after the pressure maintaining cover is pressed downwards, it is ensured that the pressure maintaining cover is matched with the opening in the upper end of the end cover body, and use is convenient.

Description

Technical Field

[0001] This application relates to the technical field of end - cover inspection equipment, and particularly to a casting end - cover testing press. Background Art

[0002] An end - cover is a mechanical component, generally used on the outer shell and support structure of equipment such as motors and flow meters to play roles of sealing, fixing, and protecting internal components. It is usually made of metal materials such as cast iron, steel plates, etc., and can also be manufactured using other materials such as plastics.

[0003] There are many production processes for end - covers, including casting, die - casting, extrusion, sheet - metal processing, etc. Among them, casting is the most commonly used production process. Through casting, molten metal or alloy can be poured into a mold, and after cooling, a formed part of the end - cover is formed.

[0004] Due to reasons such as improper construction and the complexity of its own structure in traditional casting end - covers, there may be air holes or micro - cracks in some parts that are not easily observable, which are easily overlooked by maintenance personnel. It is necessary to judge whether there are air holes or cracks inside through a pressure - resistance test to avoid potential safety hazards. For this reason, this application proposes a casting end - cover testing press. Utility Model Content

[0005] In order to solve the problem that there may be air holes or micro - cracks in some parts of traditional casting end - covers that are not easily observable and are easily overlooked by maintenance personnel, this application provides a casting end - cover testing press.

[0006] The casting end - cover testing press provided by this application adopts the following technical solutions:

[0007] A casting end - cover testing press includes a workbench, two groups of end - cover bodies arranged on the top of the workbench, a bearing mechanism installed on the top of the workbench and used to carry the end - cover bodies, and a pressure - testing mechanism installed on the top of the workbench and used to conduct pressure testing on the end - cover bodies. The bearing mechanism includes a turntable rotatably arranged on the top of the workbench and two groups of sealing and positioning seats fixedly arranged on the top ends of both sides of the turntable. The two groups of end - cover bodies are respectively movably arranged on the outer walls of the two groups of matching sealing and positioning seats.

[0008] The pressure - testing mechanism includes several hydraulic cylinders installed on the top of the workbench and a pressure - maintaining cover fixedly arranged at the bottom end of the hydraulic cylinder and used to conduct pressure testing on the corresponding end - cover body at the bottom. Several high - pressure air - pipe holes are opened in the pressure - maintaining cover for introducing high - pressure gas into the end - cover body to detect the sealing performance. A correction mechanism is arranged on one side of the workbench to limit the position of the pressure - maintaining cover after it is pressed down. A positioning mechanism is arranged between the workbench and the turntable.

[0009] By adopting the above technical solution, the telescopic movement of the hydraulic cylinder can drive the pressure-holding cover to rise and fall. The lowered pressure-holding cover can cooperate with the sealing positioning seat at the bottom to conduct a pressure test on the end cover body. The high-pressure air pipe hole can introduce high-pressure gas into the end cover body, so as to determine whether there are air leakage holes or tiny cracks on the cast end cover, and to detect the sealing performance of the end cover body.

[0010] Preferably, a top frame is fixedly arranged at the top edge of the workbench. A plurality of the hydraulic cylinders are fixedly installed on the inner top of the top frame. The correction mechanism includes a correction plate fixedly arranged on one side of the top of the workbench, and a plurality of correction openings opened on the top of the correction plate for accommodating and limiting the pressure-holding cover after it is pressed down.

[0011] By adopting the above technical solution, the correction mechanism can limit the position of the pressure-holding cover after it is pressed down, ensure that the pressure-holding cover matches the upper opening of the end cover body, and is convenient for use.

[0012] Preferably, a rotating rod is rotatably connected inside the workbench. The top end of the rotating rod is fixedly connected to the center of the bottom of the turntable. The positioning mechanism includes a semi-circular arc groove opened on the top of the workbench, and an iron block slidably arranged in the semi-circular arc groove of the workbench. The top of the iron block is fixedly connected to the bottom of the turntable. Magnetrons for magnetically fixing the iron block after it slides are fixedly arranged at both ends of the semi-circular arc groove of the workbench.

[0013] By adopting the above technical solution, through the setting of structures such as the semi-circular arc groove in the positioning structure, the turntable can only rotate half a circle, so that the rotated end cover body can be exactly located directly below the pressure-holding cover for positioning.

[0014] Preferably, a plurality of threaded rods are fixedly arranged at the bottom edge of the workbench. A support sleeve rod is threadedly connected to the outer wall of the bottom end of the threaded rod. A cleaning part that cooperates with and abuts against the inner wall of the support sleeve rod is fixedly arranged at the bottom end of the support sleeve rod.

[0015] By adopting the above technical solution, the staff can rotate the support sleeve rod to make the support sleeve rod move on one side of the threaded rod, so as to adjust the overall height of the workbench and the test press, and can meet the use requirements of people with different heights.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The telescopic movement of the hydraulic cylinder can drive the pressure-holding cover to rise and fall. The lowered pressure-holding cover can cooperate with the sealing positioning seat at the bottom to conduct a pressure test on the end cover body. The high-pressure air pipe hole can introduce high-pressure gas into the end cover body, so as to determine whether there are air leakage holes or tiny cracks on the cast end cover, and to detect the sealing performance of the end cover body. The correction mechanism can limit the position of the pressure-holding cover after it is pressed down, ensure that the pressure-holding cover matches the upper opening of the end cover body, and is convenient for use;

[0018] 2. By arranging end cover bodies at both ends of the turntable, one set of end cover bodies can be subjected to sealing detection, and the other set of end cover bodies can be rotated away from the pressure testing mechanism, which facilitates removing the detected end cover bodies and then placing new end cover bodies, improving the detection efficiency. Moreover, the setting of structures such as the inner semi-circular groove in the positioning structure enables the turntable to rotate only half a circle, so that the rotated end cover body can be exactly located directly below the pressure-holding cover for positioning. The magnet can fix the rotated turntable and end cover body by magnetically attracting the iron block, which is convenient for operation. Brief Description of the Drawings

[0019] Figure 1 FIG. is a schematic diagram of the overall structure of a casting end cover testing press according to an embodiment of the present application;

[0020] Figure 2 FIG. is another perspective view mainly showing the workbench, the pressure-holding cover and the correction plate according to an embodiment of the present application;

[0021] Figure 3 FIG. is a schematic diagram mainly showing the structure of the end cover body and the sealing positioning seat according to an embodiment of the present application;

[0022] Figure 4 FIG. is a top view of the internal structure of the workbench mainly shown in an embodiment of the present application;

[0023] Figure 5 FIG. is a side view connection diagram of the internal structure of the workbench and the turntable mainly shown in an embodiment of the present application;

[0024] Figure 6 FIG. is a connection diagram of the internal structure mainly showing the threaded rod and the support sleeve rod according to an embodiment of the present application;

[0025] Reference Signs: 1, workbench; 11, top frame; 2, end cover body; 3, turntable; 31, sealing positioning seat; 32, rotating rod; 33, semi-circular groove; 34, iron block; 35, magnet; 4, hydraulic cylinder; 41, pressure-holding cover; 42, high-pressure air pipe hole; 5, correction plate; 51, correction opening; 6, threaded rod; 61, support sleeve rod; 62, cleaning part. Detailed Description of the Embodiment

[0026] The following will further elaborate on the present application in conjunction with the attached Figures 1-6 drawings.

[0027] An embodiment of the present application discloses a casting end cover testing press.

[0028] A casting end cover testing press, referring to Figures 1-3 , includes a workbench 1, two groups of end cover bodies 2, a loading mechanism and a pressure testing mechanism. The workbench 1 can support components such as the loading mechanism. The loading mechanism can support and limit the end cover bodies 2, and the end cover bodies 2 are existing cast end covers.

[0029] Referring toFigures 1-3 , the bearing mechanism includes a turntable 3 rotatably arranged on the top of the workbench 1 and two groups of sealed positioning seats 31 fixedly arranged on the tops of both ends of the turntable 3. The two groups of end covers 2 are respectively movably arranged on the outer walls of the two groups of sealed positioning seats 31 that are adapted to each other. The turntable 3 can support and limit the end covers 2 through the sealed positioning seats 31, and the sealed positioning seats 31 can limit and position the end covers 2 that are adapted to each other on the top.

[0030] Refer to Figure 1 , Figure 4 and Figure 5 , a rotating rod 32 is rotatably connected inside the workbench 1. The top end of the rotating rod 32 is fixedly connected to the center of the bottom of the turntable 3. The rotating rod 32 can connect the workbench 1 and the turntable 3, facilitating the rotation of the turntable 3 on the top of the workbench 1.

[0031] Refer to Figures 1-2 , the pressure testing mechanism includes a plurality of hydraulic cylinders 4 installed on the top of the workbench 1 and a pressure maintaining cover 41 fixedly arranged at the bottom end of the hydraulic cylinders 4 for pressure testing the end covers 2 that are adapted to each other at the bottom. A top frame 11 is fixedly arranged at the edge of the top of the workbench 1. The plurality of hydraulic cylinders 4 are fixedly installed on the inner top of the top frame 11. The top frame 11 can connect the workbench 1 and the hydraulic cylinders 4. After the hydraulic cylinders 4 expand and contract, they will drive the pressure maintaining cover 41 to move up and down.

[0032] Refer to Figures 1-2 , a plurality of high-pressure air pipe holes 42 for introducing high-pressure gas into the end covers 2 to detect the airtightness are opened in the pressure maintaining cover 41. The pressure maintaining cover 41 can be connected to the external high-pressure air pipe through the high-pressure air pipe holes 42. The lowered pressure maintaining cover 41 can cooperate with the sealed positioning seats 31 at the bottom to conduct pressure testing and detection on the end covers 2. The high-pressure air pipe holes 42 can introduce high-pressure gas into the end covers 2. By observing whether there are air leakage points and air leakage sounds, it can be judged whether there are air leakage holes or micro-cracks on the end covers 2, so as to detect the airtightness of the end covers 2.

[0033] Refer to Figures 1-2 , a correction mechanism for limiting the position of the pressure maintaining cover 41 after it is pressed down is arranged on one side of the workbench 1. The correction mechanism includes a correction plate 5 fixedly arranged on one side of the top of the workbench 1 and a plurality of correction openings 51 opened on the top of the correction plate 5 for accommodating and limiting the pressure maintaining cover 41 after it is pressed down. The correction openings 51 of the correction plate 5 can cooperate with the protruding parts of the pressure maintaining cover 41, thereby limiting the position of the pressure maintaining cover 41 after it is pressed down and ensuring the matching of the pressure maintaining cover 41 with the upper openings of the end covers 2.

[0034] Refer to Figure 1 , Figure 4 and Figure 5, a positioning mechanism is provided between the workbench 1 and the turntable 3. The positioning mechanism includes a semi-circular arc groove 33 opened at the top of the workbench 1 and an iron block 34 slidably arranged in the semi-circular arc groove 33 of the workbench 1. The top of the iron block 34 is fixedly connected to the bottom of the turntable 3. The iron block 34 can further connect the workbench 1 and the turntable 3, and the semi-circular arc groove 33 can limit the rotation range of the turntable 3, so that the turntable 3 can only rotate half a circle. After rotating half a circle, the end cover body 2 on the top of the turntable 3 can be exactly located directly below the pressure maintaining cover 41 for positioning, which is convenient for operation.

[0035] Refer to Figure 1 , Figure 4 and Figure 5 , magnetic iron stones 35 for magnetically fixing the slid iron block 34 are fixedly arranged at both ends of the semi-circular arc groove 33 of the workbench 1. The magnetic iron stones 35 can magnetically attract the iron block 34 to fix the rotated turntable 3 and the end cover body 2, improving the stability of the turntable 3 and the end cover body 2 during the pressure test detection.

[0036] Refer to Figure 1 and Figure 6 , a plurality of threaded rods 6 are fixedly arranged at the bottom edge of the workbench 1. The outer wall of the bottom end of the threaded rod 6 is threadedly connected with a support sleeve rod 61. The threaded rod 6 and the support sleeve rod 61 can support components such as the workbench 1. The staff can rotate the support sleeve rod 61 to make the support sleeve rod 61 move on one side of the threaded rod 61, thereby adjusting the overall height of the workbench 1 and the pressure testing machine, which can meet the use requirements of people with different heights.

[0037] Refer to Figure 1 and Figure 6 , a cleaning part 62 that is fixedly arranged at the bottom end of the support sleeve rod 61 and is fitted and abutted against the inner wall of the support sleeve rod 61 is provided. The cleaning part 62 can be an object with a cleaning effect such as a cleaning sponge. When the support sleeve rod 61 rotates, the cleaning part 62 can partially clean the inside of the support sleeve rod 61, reducing the cleaning intensity of the inside of the support sleeve rod 6 for the staff in the later stage.

[0038] The implementation principle of an end cover casting pressure testing machine in an embodiment of this application is as follows:

[0039] During use, the staff can place the end cover body 2 on a matching sealing and positioning seat 31, and then rotate the turntable 3. At this time, the semi-circular arc groove 33 can limit the rotation range of the turntable 3, so that the turntable 3 can only rotate half a circle. After rotating half a circle, the end cover body 2 on the top of the turntable 3 can be exactly located directly below the pressure maintaining cover 41 for positioning;

[0040] Next, control the telescopic movement of the hydraulic cylinder 4 to drive the pressure-holding cover 41 to move up and down. After the pressure-holding cover 41 descends, it can cooperate with the sealing and positioning seat 31 at the bottom to conduct a pressure test on the end cover body 2. At the same time, the high-pressure air pipe hole 42 will introduce high-pressure gas into the end cover body 2, so as to determine whether there are air leakage holes or micro-cracks on the end cover body 2, and to detect the sealing performance of the end cover body 2;

[0041] After the detection, rotate the turntable 3 in the reverse direction to rotate another set of end cover bodies 2 on the turntable 3 below the pressure-holding cover 41, and the detected end cover bodies 2 of this group can rotate away from the pressure-holding cover 41, which is convenient for the staff to remove the detected end cover bodies 2 and then place new end cover bodies 2 to improve the detection efficiency;

[0042] When it is necessary to adjust the height of the testing press, the staff can rotate the support sleeve rod 61 to move the support sleeve rod 61 on one side of the threaded rod 61 to adjust the overall height of the testing press, which can meet the usage requirements of people with different heights. After the support sleeve rod 61 rotates, the fixed cleaning part 62 can partially clean the inside of the rotated and moved support sleeve rod 61, reducing the cleaning intensity of the staff on the support sleeve rod 6 in the later stage.

[0043] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A casting end cover testing press, comprising a workbench (1), two groups of end cover bodies (2) arranged on the top of the workbench (1), a loading mechanism installed on the top of the workbench (1) and used for loading the end cover bodies (2), and a pressure testing mechanism installed on the top of the workbench (1) and used for performing pressure testing on the end cover bodies (2), characterized in that: The loading mechanism includes a turntable (3) rotatably arranged on the top of the workbench (1), and two groups of sealing and positioning seats (31) fixedly arranged on the tops of both ends of the turntable (3). The two groups of end cover bodies (2) are respectively movably arranged on the outer walls of the two groups of sealing and positioning seats (31) that are adapted to them. The pressure testing mechanism includes several hydraulic cylinders (4) installed on the top of the workbench (1), and a pressure maintaining cover (41) fixedly arranged at the bottom end of the hydraulic cylinder (4) and used for performing pressure testing on the end cover body (2) that is adapted to it at the bottom. A plurality of high-pressure air pipe holes (42) for introducing high-pressure gas into the end cover body (2) to detect the airtightness are opened in the pressure maintaining cover (41). A correction mechanism for defining the position after the pressure maintaining cover (41) is pressed down is arranged on one side of the workbench (1), and a positioning mechanism is arranged between the workbench (1) and the turntable (3).

2. The casting end cover testing press according to claim 1, wherein: A top frame (11) is fixedly arranged at the edge of the top of the workbench (1), and several hydraulic cylinders (4) are fixedly installed on the inner top of the top frame (11).

3. The casting end cover testing press according to claim 1, characterized in that: The correction mechanism includes a correction plate (5) fixedly arranged on one side of the top of the workbench (1), and several correction openings (51) opened on the top of the correction plate (5) for accommodating and limiting the pressure maintaining cover (41) after it is pressed down.

4. A casting end cover testing press according to claim 1, characterized in that: A rotating rod (32) is rotatably connected inside the workbench (1), and the top end of the rotating rod (32) is fixedly connected to the center of the bottom of the turntable (3).

5. The casting end cover testing press according to claim 4, characterized in that: The positioning mechanism includes a semi-circular arc groove (33) opened on the top of the workbench (1), and an iron block (34) slidably arranged in the semi-circular arc groove (33) of the workbench (1). The top of the iron block (34) is fixedly connected to the bottom of the turntable (3).

6. The casting end cover testing press according to claim 5, wherein: Magnets (35) for magnetically fixing the iron block (34) after it slides are fixedly arranged at both ends of the semi-circular arc groove (33) of the workbench (1).

7. A casting end cover testing press according to claim 1, characterized in that: Several threaded rods (6) are fixedly arranged at the edge of the bottom of the workbench (1), and a support sleeve rod (61) is threadedly connected to the outer wall of the bottom end of the threaded rod (6).

8. A casting end cover testing press according to claim 7, characterized in that: A cleaning part (62) that is fixedly arranged at the bottom end of the support sleeve rod (61) and cooperatively abuts against the inner wall of the support sleeve rod (61) is arranged at the bottom end of the support sleeve rod (61).

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