Piston rotation stopping pin pressure detection device

Abstract

The utility model belongs to the technical field of piston part detection, and particularly relates to a piston rotation stopping pin pressure detection device, which comprises a base, a fixing frame, a placing seat and an upper positioning plate, a piston main body is arranged above the placing seat and between the placing seat and the upper positioning plate, and a rotation stopping pin is arranged in a piston groove formed in the piston main body. A detection head is arranged above the piston body, the axis of the detection head and the axis of the clamping groove are located on the same plumb line, the upper positioning plate is provided with the clamping groove used for being connected with the rotation stopping pin in an inserted mode, and the clamping seat is provided with a containing groove in sliding connection with the upper positioning plate and fixedly connected with the moving seat through a fixing block. A screw rod in threaded connection with the movable seat is rotationally mounted in a through groove formed in the fixed frame; according to the utility model, the rotation stopping pin can be quickly positioned, so that the rotation stopping pin is quickly and accurately aligned with the detection head, and then the piston main body is clamped and fixed, so that the piston main body is prevented from deviating in the detection process.

Description

Technical Field

[0001] This utility model belongs to the field of piston component testing technology, and in particular relates to a piston anti-rotation pin pressure testing device. Background Technology

[0002] The piston is a key moving part in a mechanical system. Its main function is to convert the pressure of the fluid applied to its surface into mechanical work, or to convert mechanical motion into fluid pressure or fluid flow. The piston anti-rotation pin is a small but crucial component on the piston. Its main function is to prevent the piston rings from rotating in the ring groove. After the anti-rotation pin is installed, the piston needs to be randomly inspected to ensure that the anti-rotation pin is assembled stably and well.

[0003] Currently, existing anti-rotation pin pressure testing is usually done manually using pressurizing equipment (cylinders, jacks, etc.) with simple tooling. It is difficult to align the anti-rotation pin with the output end of the pressurizing equipment. During testing, the pressure on the pressure surface is easily uneven due to misalignment, which affects the accuracy of the test results.

[0004] To address the aforementioned issues, this application proposes a piston anti-rotation pin pressure detection device. Utility Model Content

[0005] The purpose of this invention is to provide a piston anti-rotation pin pressure detection device, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a piston anti-rotation pin pressure detection device, comprising a base and a fixing frame and a placement seat fixed on its top surface, and an upper positioning plate located above the placement seat. A piston body is disposed between the placement seat and the upper positioning plate, and an anti-rotation pin is installed in a piston groove opened in the piston body. A detection head is disposed above the piston body, and the axis of the detection head and the axis of the groove are on the same vertical line. The upper positioning plate has a groove for inserting the anti-rotation pin. A clamping seat has a receiving groove that is slidably connected to the upper positioning plate. The clamping seat is fixedly connected to a movable seat through a fixing block. A screw threaded to the movable seat is rotatably installed in a through groove opened in the fixing frame. The rotation of the screw drives the clamping seat to move downward through the movable seat to clamp and fix the piston body.

[0008] Furthermore, the top of the upper positioning plate is fixed with a connecting pipe that communicates with the slot, and the connecting pipe passes through the top of the clamping seat and is slidably connected to the clamping seat.

[0009] Furthermore, the clamping seat has two smooth grooves, and a sliding block is slidably disposed in the smooth groove. The bottom end of the sliding block is fixedly connected to the top end of the upper positioning plate through a connecting plate. A spring is disposed in the smooth groove, and the two ends of the spring are fixedly connected to the sliding block and the clamping seat respectively.

[0010] Furthermore, the slot is a funnel-shaped structure with a larger top end than the bottom end, and the bottom diameter of the slot, the outer diameter of the anti-rotation pin, and the outer diameter of the detection head are the same. The top diameter of the slot is the same as the inner diameter of the connecting pipe.

[0011] Furthermore, a rotating shaft coaxially fixed to the bottom end of the screw is rotatably mounted on the bottom surface of the through groove, and a bevel gear one meshing with bevel gear two is provided on the outer wall of the rotating shaft. The bevel gear two is fixedly connected to one end of the connecting shaft, and the other end of the connecting shaft is fixedly connected to a crank handle provided outside the fixed frame.

[0012] Furthermore, a baffle is fixedly provided in the through groove above the bevel gear, and the baffle is penetrated by the rotating shaft and rotatably connected to the rotating shaft. A T-shaped guide rail is fixedly provided on the top surface of the baffle and slidably connected to the movable seat.

[0013] Furthermore, the top of the detection head is fixedly connected to the connecting block via a connecting rod, a pressure sensor is fixedly mounted above the connecting block, a cylinder is installed above the fixing frame, and the output end of the cylinder is fixedly connected to the lifting plate. The bottom end of the lifting plate is fixedly connected to the pressure sensor. A display connected to the pressure sensor is fixedly mounted on one side of the fixing frame, and a surface through the top of the lifting plate is fixedly mounted and slidably connected to the fixing frame.

[0014] Furthermore, a lower limiting plate that mates with the piston groove is fixed on the top surface of the placement seat.

[0015] This utility model has the following beneficial effects:

[0016] This utility model uses the rotation of the piston body to align the anti-rotation pin with the slot, and then the upper positioning plate moves down to allow the anti-rotation pin to enter the slot, thereby positioning the piston body. The axis and the axis of the detection head are on the same vertical line, thus aligning the detection head with the anti-rotation pin. In addition, the upper positioning plate also cooperates with the piston slot to limit the piston body and prevent the piston body from shifting horizontally.

[0017] This invention uses a rotating screw to drive the moving seat to move vertically, and further uses a fixing block to drive the clamping seat to move vertically, so that the clamping seat presses the piston body onto the placement seat to clamp and fix the piston body.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0021] Figure 2 This is a partial structural schematic diagram of the present invention;

[0022] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0023] Figure 4 This is a cross-sectional view of the fixing frame of this utility model;

[0024] Figure 5 This is a schematic diagram of the clamping base structure of this utility model;

[0025] The attached diagram lists the components represented by each number as follows:

[0026] In the diagram: 1. Base; 2. Fixing frame; 201. Through groove; 202. T-shaped guide rail; 203. Baffle; 3. Placement seat; 301. Lower limit plate; 4. Clamping seat; 401. Receiving groove; 402. Smoothing groove; 403. Fixing block; 5. Upper positioning plate; 501. Slot; 6. Sliding block; 601. Connecting plate; 7. Connecting pipe; 8. Piston body; 801. Piston groove; 802. Anti-rotation pin; 9. Moving seat; 10. Screw; 1001. Rotating shaft; 11. Bevel gear one; 12. Bevel gear two; 13. Cylinder; 1301. Lifting plate; 14. Pressure sensor; 15. Connecting block; 16. Detection head; 1601. Connecting rod; 17. Display; 18. Smoothing rod. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Please see Figure 1 - Figure 5As shown, this utility model is a piston anti-rotation pin pressure detection device, including a base 1 and a fixing frame 2 and a placement seat 3 fixed on its top surface, and an upper positioning plate 5 located above the placement seat 3. A piston body 8 is provided between the placement seat 3 and the upper positioning plate 5, and an anti-rotation pin 802 is installed in the piston groove 801 opened in the piston body 8. A detection head 16 is provided above the piston body 8, and the axis of the detection head 16 is on the same vertical line as the axis of the slot 501. The upper positioning plate 5 has a slot 501 for inserting with the anti-rotation pin 802. A clamping seat 4 has a receiving groove 401 that is slidably connected to the upper positioning plate 5. The clamping seat 4 is fixedly connected to the moving seat 9 through a fixing block 403. A screw 10 that is threadedly connected to the moving seat 9 is rotatably installed in the through groove 201 opened in the fixing frame 2. The rotation of the screw 10 drives the clamping seat 4 to move down through the moving seat 9 to clamp and fix the piston body 8.

[0030] This embodiment provides a piston anti-rotation pin pressure detection device. The piston body 8 is placed on the placement seat 3, ensuring that the anti-rotation pin 802 faces upward. The piston body 8 is rotated to align the anti-rotation pin 802 with the slot 501. The upper positioning plate 5 is moved down to insert the slot 501 into the anti-rotation pin 802, thereby ensuring that the anti-rotation pin 802 is aligned with the detection head 16. The top end of the screw 10 is rotatably connected to the top surface of the through groove 201. Then, by rotating the screw 10, the clamping seat 4 is moved down to fix the piston body 8 on the placement seat 3.

[0031] The upper positioning plate 5 has a connecting pipe 7 fixed at its top end, which communicates with the slot 501. The connecting pipe 7 passes through the top end of the clamping seat 4 and is slidably connected to the clamping seat 4. The clamping seat 4 has two smooth grooves 402, and a sliding block 6 is slidably provided in the smooth grooves 402. The bottom end of the sliding block 6 is fixedly connected to the top end of the upper positioning plate 5 through a connecting plate 601. A spring is provided in the smooth groove 402, and the two ends of the spring are fixedly connected to the sliding block 6 and the clamping seat 4, respectively. After the piston body 8 is placed on the placement seat 3, the upper positioning plate 5 is first brought into contact with the piston body 8 and the spring is elastically deformed. Then the piston body 8 is rotated. After the anti-rotation pin 802 is aligned with the slot 501, the spring drives the upper positioning plate 5 to move down so that the slot 501 and the anti-rotation pin 802 are inserted together, thus completing the positioning.

[0032] The slot 501 is a funnel-shaped structure with a larger top than bottom. The bottom diameter of the slot 501, the outer diameter of the anti-rotation pin 802, and the outer diameter of the detection head 16 are the same. The top diameter of the slot 501 is the same as the inner diameter of the connecting pipe 7 to prevent the detection head 16 from rubbing against the connecting pipe 7 and the slot 501, and to ensure that the anti-rotation pin 802 and the detection head 16 are accurately aligned.

[0033] The bottom surface of the through groove 201 is rotatably mounted with a rotating shaft 1001 that is coaxially fixed with the bottom end of the screw 10. The outer wall of the rotating shaft 1001 is provided with a bevel gear 11 that meshes with the second bevel gear 12. The second bevel gear 12 is fixedly connected to one end of the connecting shaft, and the other end of the connecting shaft is fixedly connected to a crank handle provided outside the fixed frame 2. The crank handle drives the connecting shaft to rotate, which in turn drives the second bevel gear 12 and the first bevel gear 11 to rotate. Thus, the rotating shaft 1001 drives the screw 10 to rotate, enabling the moving seat 9 to move vertically.

[0034] The through groove 201 is fixedly provided with a baffle 203 located above the bevel gear 11, and the baffle 203 is penetrated by the rotating shaft 1001 and rotatably connected to the rotating shaft 1001. The top surface of the baffle 203 is fixedly provided with a T-shaped guide rail 202 that is slidably connected to the moving seat 9. The T-shaped guide rail 202 guides the movement of the moving seat 9 and ensures the stability of the vertical movement of the moving seat 9. The baffle 203 prevents the moving seat 9 from colliding with the bevel gear 11 or the bevel gear 22.

[0035] The detection head 16 is fixedly connected to the connecting block 15 via a connecting rod 1601. A pressure sensor 14 is fixedly mounted above the connecting block 15. A cylinder 13 is mounted above the fixing frame 2, and the output end of the cylinder 13 is fixedly connected to the lifting plate 1301. The bottom end of the lifting plate 1301 is fixedly connected to the pressure sensor 14. A display 17 connected to the pressure sensor 14 is fixedly mounted on one side of the fixing frame 2. An 18 is fixedly mounted on the top surface of the lifting plate 1301, penetrating the top surface of the fixing frame 2 and slidably connected to the fixing frame 2. The length of the connecting rod 1601 is greater than the length of the connecting pipe 7. The cylinder 13 drives the lifting plate 1301, pressure sensor 14, connecting block 15, 1601 and detection head 16 to move downward, so that the detection head 16 applies pressure to the anti-rotation pin 802. The display 17 is used to display the detection pressure value in real time.

[0036] The top surface of the placement seat 3 is fixed with a lower limiting plate 301 that cooperates with the piston groove 801. The lower limiting plate 301 cooperates with the piston groove 801 to prevent the piston body 8 from moving horizontally.

[0037] It is understandable that this utility model can quickly position the anti-rotation pin 802, so that the anti-rotation pin 802 is quickly and accurately aligned with the detection head 16, and then clamp and fix the piston body 8 to prevent the piston body 8 from shifting during the detection process.

[0038] A specific application of the operation process in this embodiment is as follows: Place the piston body 8 on the placement seat 3 with the anti-rotation pin 802 facing upwards. Then, turn the handle to make the clamping seat 4 move the upper positioning plate 5 vertically. When the clamping seat 4 does not imprison the piston body 8 on the placement seat 3 and the upper positioning plate 5 is in contact with the piston body 8, and the spring deforms, rotate the piston body 8 to adjust its position. When the anti-rotation pin 802 is aligned with the slot 501, the spring drives the upper positioning plate 5 to move downwards quickly so that the slot 501 is inserted into the anti-rotation pin 802. At this time, the anti-rotation pin 802 and the axis of the detection head 16 are on the same vertical line. Then, drive the cylinder 13 to move the detection head 16 downwards. The detection head 16 contacts the anti-rotation pin 802 and applies pressure to the anti-rotation pin 802. The operator can accurately read the pressure applied to the anti-rotation pin 802 by the detection head 16 through the display 17.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A piston anti-rotation pin pressure detection device, comprising a base (1) and a fixing frame (2) and a placement seat (3) fixed on its top surface, characterized in that, Also includes: The upper positioning plate (5) is located above the placement seat (3). A piston body (8) is provided between the placement seat (3) and the upper positioning plate (5). An anti-rotation pin (802) is installed in the piston groove (801) opened in the piston body (8). A detection head (16) is provided above the piston body (8). The axis of the detection head (16) and the axis of the slot (501) are on the same vertical line. The upper positioning plate (5) is provided with a slot (501) for insertion with the anti-rotation pin (802). The clamping seat (4) has a receiving groove (401) that is slidably connected to the upper positioning plate (5). The clamping seat (4) is fixedly connected to the moving seat (9) through the fixing block (403). A screw (10) that is threadedly connected to the moving seat (9) is rotatably installed in the through groove (201) of the fixing frame (2). The screw (10) rotates and drives the clamping seat (4) to move down through the moving seat (9) to clamp and fix the piston body (8).

2. The piston anti-rotation pin pressure detection device according to claim 1, characterized in that: The top of the upper positioning plate (5) is fixed with a connecting pipe (7) that communicates with the slot (501), and the connecting pipe (7) passes through the top of the clamping seat (4) and is slidably connected to the clamping seat (4).

3. The piston anti-rotation pin pressure detection device according to claim 1, characterized in that: The clamping seat (4) has two smooth grooves (402) and a sliding block (6) is slidably provided in the smooth groove (402). The bottom end of the sliding block (6) is fixedly connected to the top end of the upper positioning plate (5) through the connecting plate (601). A spring is provided in the smooth groove (402), and the two ends of the spring are fixedly connected to the sliding block (6) and the clamping seat (4) respectively.

4. The piston anti-rotation pin pressure detection device according to claim 1, characterized in that: The slot (501) is a horn-shaped structure with the top end larger than the bottom end. The bottom diameter of the slot (501), the outer diameter of the anti-rotation pin (802), and the outer diameter of the detection head (16) are the same. The top diameter of the slot (501) is the same as the inner diameter of the connecting pipe (7).

5. The piston anti-rotation pin pressure detection device according to claim 1, characterized in that: The bottom surface of the through groove (201) is rotatably mounted with a rotating shaft (1001) that is coaxially fixed with the bottom end of the screw (10). The outer wall of the rotating shaft (1001) is provided with a bevel gear (11) that meshes with the second bevel gear (12). The second bevel gear (12) is fixedly connected to one end of the connecting shaft, and the other end of the connecting shaft is fixedly connected to a crank handle set outside the fixed frame (2).

6. The piston anti-rotation pin pressure detection device according to claim 5, characterized in that: A baffle (203) located above the bevel gear (11) is fixedly provided in the through groove (201), and the baffle (203) is penetrated by the rotating shaft (1001) and rotatably connected to the rotating shaft (1001). A T-shaped guide rail (202) that is slidably connected to the moving seat (9) is fixedly provided on the top surface of the baffle (203).

7. The piston anti-rotation pin pressure detection device according to claim 1, characterized in that: The top of the detection head (16) is fixedly connected to the connecting block (15) via a connecting rod (1601). A pressure sensor (14) is fixedly mounted above the connecting block (15). A cylinder (13) is installed above the fixing frame (2), and the output end of the cylinder (13) is fixedly connected to the lifting plate (1301). The bottom end of the lifting plate (1301) is fixedly connected to the pressure sensor (14). A display (17) connected to the pressure sensor (14) is fixedly mounted on one side of the fixing frame (2). An (18) is fixedly mounted on the top surface of the lifting plate (1301) that passes through the top surface of the fixing frame (2) and is slidably connected to the fixing frame (2).

8. The piston anti-rotation pin pressure detection device according to claim 1, characterized in that: The top surface of the placement seat (3) is fixed with a lower limiting plate (301) that cooperates with the piston groove (801).

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