Piston pin hole defect detection device

Abstract

The utility model belongs to the technical field of piston pin hole detection, and particularly relates to a piston pin hole defect detection device which comprises a base and a vertical plate fixedly arranged at the top end of the base, and further comprises two detection heads which are symmetrically arranged above the base, two movable seats are arranged above the base, and the detection heads are installed on the side faces of the movable seats through fixing columns. A detector body is fixedly arranged on the side wall of the movable seat, the movable seat can drive the detection head to move synchronously, the detection head is inserted into a piston pin hole for detection, the two rubber plugs are symmetrically arranged between the movable seat, the axes of the rubber plugs and the detection head are located on the same horizontal line, a first smooth rod is arranged between the rubber plugs, and a fixing plate is fixedly arranged on the outer wall of the first smooth rod. A second spring is fixedly arranged between the fixing plate and the rubber plug and exerts elastic force on the rubber plug so that the rubber plug can be inserted into the piston pin hole. According to the utility model, two piston pin holes can be detected at the same time, the detection rate of the piston pin holes is improved, and the piston pin can be positioned, so that the piston pin holes are quickly aligned with the detection head.

Description

Technical Field

[0001] This utility model belongs to the field of piston pin hole detection technology, and in particular relates to a piston pin hole defect detection device. Background Technology

[0002] The piston pin is a key component in an internal combustion engine that connects the piston and the connecting rod. Essentially, it is a thick-walled hollow cylindrical pin installed on the piston skirt. Through the design of passing through the small end hole of the connecting rod, a rigid connection between the piston and the connecting rod is achieved. After the piston is manufactured, the piston pin hole needs to be inspected.

[0003] Currently, existing testing devices have a simple structure and cannot simultaneously test both piston pin holes of a piston pin. After testing one piston pin hole, the piston pin needs to be adjusted and re-clamped before testing the other piston pin hole, which is complicated and inefficient.

[0004] To address the aforementioned problems, this application proposes a piston pin hole defect detection device. Utility Model Content

[0005] The purpose of this invention is to provide a piston pin hole defect 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 is a piston pin hole defect detection device, including a base and a vertical plate fixed to its top, and two detection heads symmetrically arranged above the base. Two movable seats are arranged above the base. The detection heads are mounted on the sides of the movable seats close to each other by fixed columns. The detection instrument body is fixed to the side wall of the movable seats. The movable seats can drive the detection heads to move synchronously, so that the detection heads are inserted into the piston pin hole for detection. Two rubber plugs are symmetrically arranged between the movable seats. The axes of the rubber plugs and the detection heads are on the same horizontal line. A smooth rod is provided between the rubber plugs, and a fixed plate is fixed to the outer wall of the smooth rod. A spring is fixed between the fixed plate and the rubber plugs. The spring applies elastic force to the rubber plugs to insert them into the piston pin hole.

[0008] Furthermore, the smoothing rod one has a smoothing cavity two that is slidably connected to the sliding plate, and the smoothing rod two is provided on the side of the rubber plug that is close to each other, passing through one end of the smoothing rod one and being fixedly connected to the sliding plate. The spring two is provided outside the smoothing rod two.

[0009] Furthermore, the vertical plate is fixedly connected to the horizontal column with a smooth cavity, and the side wall of the horizontal column is slidably connected to the smooth rod. A screw is rotatably installed in the smooth cavity, and the screw is threadedly connected to the threaded block. One end of the smooth rod and the side wall of the threaded block are respectively hinged to both ends of the connecting rod through a hinge seat. The side of the vertical plate is provided with a motor 2 whose output end is connected to one end of the screw.

[0010] Furthermore, a guide post parallel to the screw is fixedly provided inside the smooth cavity, and a guide block that is slidably connected to the guide post is fixedly provided on the bottom surface of the threaded block.

[0011] Furthermore, a ball bearing is rotatably mounted at one end of the rubber plug that is far apart from the other end.

[0012] Furthermore, the top surface of the base is fixedly connected to the fixed seat with a smooth groove, and two symmetrically arranged sliding blocks are slidably installed in the smooth groove. The sliding blocks are respectively fixedly connected to the bottom end of the movable seat. A bidirectional screw threadedly connected to the sliding blocks is rotatably installed in the smooth groove. A motor with its output end connected to one end of the bidirectional screw is provided on one side of the fixed seat.

[0013] Furthermore, two clamping plates are symmetrically arranged between the movable seats, and a telescopic rod is fixed between the clamping plates and the movable seats. A spring is provided outside the telescopic rod, and the two ends of the spring are fixedly connected to the movable seats and the clamping plates respectively.

[0014] Furthermore, the clamping plate has a clearance hole in the middle part.

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

[0016] This invention uses two detection heads inserted into the piston pin holes of the piston to simultaneously detect both piston pin holes, reducing the piston adjustment and clamping steps and improving the detection rate of the piston pin holes.

[0017] This invention uses a rubber plug inserted into the piston pin hole to position and fix the piston pin, so that the detection head is directly aligned with the piston pin hole. This reduces the time consumed in aligning the detection head with the piston pin hole, increases the detection rate, and also prevents the detection head from being damaged by collision with the outer wall of the piston pin.

[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 schematic diagram of the horizontal column cross-sectional structure of this utility model;

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

[0024] Figure 5 This is a cross-sectional view of the fixing base of this utility model;

[0025] Figure 6 This is a schematic diagram of the clamping plate structure of this utility model;

[0026] The attached diagram lists the components represented by each number as follows:

[0027] In the diagram: 1. Base; 101. Vertical plate; 2. Fixed seat; 201. Smooth groove; 202. Sliding block; 3. Motor 1; 301. Bidirectional screw; 4. Moving seat; 5. Detection head; 6. Detector body; 7. Clamping plate; 701. Clearance hole; 8. Telescopic rod; 801. Spring 1; 9. Horizontal column; 901. Smooth cavity 1; 902. Guide column; 10. Smooth rod 1; 1001. Smooth cavity 2; 1002. Fixed plate; 11. Sliding plate; 12. Smooth rod 2; 1201. Spring 2; 13. Rubber plug; 14. Ball bearing; 15. Connecting rod; 16. Threaded block; 17. Guide block; 18. Motor 2; 1801. Screw. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] Please see Figure 1 — Figure 6 As shown, this utility model is a piston pin hole defect detection device, including a base 1 and a vertical plate 101 fixed at its top, and two detection heads 5 symmetrically arranged above the base 1. Two movable seats 4 are arranged above the base 1. The detection heads 5 are mounted on the sides of the movable seats 4 close to each other by fixing columns. The detection instrument body 6 is fixed on the side wall of the movable seat 4. The movable seat 4 can drive the detection heads 5 to move synchronously, so that the detection heads 5 are inserted into the piston pin hole for detection. Two rubber plugs 13 are symmetrically arranged between the movable seats 4. The axes of the rubber plugs 13 and the detection heads 5 are on the same horizontal line. A smooth rod 10 is provided between the rubber plugs 13, and a fixing plate 1002 is fixed on the outer wall of the smooth rod 10. A spring 1201 is fixed between the fixing plate 1002 and the rubber plugs 13. The spring 1201 applies elastic force to the rubber plugs 13 to insert the rubber plugs 13 into the piston pin hole.

[0031] This embodiment provides a piston pin hole defect detection device. The piston pin is sleeved on the outside of the rubber plug 13. The spring 1201 applies elastic force to the rubber plug 13 to push it into the piston pin hole, thereby positioning and securing the piston pin. The axis of the rubber plug 13 is collinear with the axis of the detection head 5. After the rubber plug 13 is inserted into the piston pin hole, the piston pin hole is aligned with the detection head 5. Then, the moving seat 4 drives the detection head 5 to insert into the piston pin hole to detect the piston pin hole. The arrangement of two detection heads 5 can detect two piston pin holes simultaneously, improving detection efficiency.

[0032] The smoothing rod 10 has a smoothing cavity 1001 that is slidably connected to the sliding plate 11. The side of the rubber plug 13 that is close to each other has a smoothing rod 12 that passes through one end of the smoothing rod 10 and is fixed to the sliding plate 11. The spring 1201 is disposed outside the smoothing rod 12. The smoothing rod 12 limits the direction of movement of the rubber plug 13, so that the rubber plug 13 can only move horizontally. The sliding plate 11 can prevent the smoothing rod 12 from separating from the smoothing rod 10.

[0033] The vertical plate 101 is fixedly connected to the horizontal column 9 with a smooth cavity 901, and the side wall of the horizontal column 9 is slidably connected to the smooth rod 10. A screw 1801 is rotatably installed in the smooth cavity 901. The screw 1801 is threadedly connected to the threaded block 16. One end of the smooth rod 10 and the side wall of the threaded block 16 are respectively hinged to both ends of the connecting rod 15 through hinge seats. The side of the vertical plate 101 is provided with a motor 18 whose output end is connected to one end of the screw 1801. The motor 18 drives the screw 1801 to rotate, thereby driving the threaded block 16 to move. The connecting rod 15 further pulls the smooth rod 10 to move, and then the spring 1201 drives the rubber plug 13 to move, so that the piston pin can be sleeved on the rubber plug 13.

[0034] The smooth cavity 901 is equipped with a guide post 902 parallel to the screw 1801. The bottom surface of the threaded block 16 is equipped with a guide block 17 that is slidably connected to the guide post 902. The cooperation between the guide block 17 and the guide post 902 guides the movement of the threaded block 16 and prevents the threaded block 16 from deviating.

[0035] Among them, a rotating ball 14 is rotatably installed at one end of the rubber plug 13 that is far away from each other. The rotating ball 14 fits against the inner wall of the piston pin and can prevent the rubber plug 13 from being damaged by friction with the inner wall of the piston pin when the piston pin is fitted.

[0036] The top surface of the base 1 is fixedly connected to the fixed seat 2 with a smooth groove 201. Two symmetrically arranged sliding blocks 202 are slidably installed in the smooth groove 201. The sliding blocks 202 are fixedly connected to the bottom end of the movable seat 4. A bidirectional screw 301 threadedly connected to the sliding blocks 202 is rotatably installed in the smooth groove 201. A motor 3 with its output end connected to one end of the bidirectional screw 301 is provided on one side of the fixed seat 2. The motor 3 drives the bidirectional screw 301 to rotate, thereby driving the sliding blocks 202 to move synchronously in the opposite direction, and then driving the movable seat 4 to move in the opposite direction.

[0037] Two clamping plates 7 are symmetrically arranged between the movable seats 4. A telescopic rod 8 is fixed between the clamping plate 7 and the movable seat 4. A spring 801 is provided outside the telescopic rod 8, and the two ends of the spring 801 are fixedly connected to the movable seat 4 and the clamping plate 7 respectively. When the movable seat 4 moves and drives the detection head 5 to insert into the piston pin hole, it will drive the clamping plate 7 to move and make the clamping plate 7 press against the outer wall of the piston pin to clamp and fix the piston pin, preventing the piston pin from deviating.

[0038] The clamping plate 7 has a clearance hole 701 in the middle part. After the clamping plate 7 is in contact with the inner wall of the piston pin, the detection head 5 passes through the clearance hole 701 and is inserted into the piston pin hole.

[0039] It is understandable that this utility model can simultaneously detect two piston pin holes, thereby improving the detection rate of piston pin holes. Secondly, it can position the piston pin, enabling the piston pin hole to be quickly aligned with the detection head 5.

[0040] A specific application of the operation flow of this embodiment is as follows: The drive motor 18 drives the screw 1801 to rotate, which pulls the smooth rod 10 closer together through the threaded block 16 and the connecting rod 15. Then, it pulls the rubber plug 13 and the rotating ball 14 closer together. After the piston pin is sleeved on the rubber plug 13 and the rotating ball 14, the drive motor 18 makes the rotating ball 14 move away from each other and press against the inner wall of the piston pin. Then, the piston pin is rotated and pulled to align the rubber plug 13 with the piston pin hole. Then, the spring 1201 applies elastic force to the rubber plug 13 to insert the rubber plug 13 into the piston pin hole, thereby positioning and fixing the piston pin.

[0041] Then, the drive motor 3 drives the bidirectional screw 301 to rotate, thereby causing the sliding block 202 to move horizontally, so that the moving seat 4 drives the clamping plate 7 and the detection head 5 to move closer to each other. The clamping plate 7 presses against the outer wall of the piston pin to clamp and fix the piston pin. Then, the detection head 5 passes through the clearance hole 701 and inserts into the piston pin hole to detect the piston pin hole. The detection head 5 pushes the rotating ball 14 to separate the rotating ball 14 from the piston pin hole.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., 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, the 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.

[0043] 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 pin hole defect detection device, comprising a base (1) and a vertical plate (101) fixed at its top, characterized in that, Also includes: Two detection heads (5) are symmetrically arranged above the base (1). Two movable seats (4) are arranged above the base (1). The detection heads (5) are installed on the sides of the movable seats (4) that are close to each other by fixing columns. The main body of the detector (6) is fixed on the side wall of the movable seat (4). The movable seat (4) can drive the detection heads (5) to move synchronously, so that the detection heads (5) can be inserted into the piston pin hole for detection. Two rubber plugs (13) are symmetrically arranged between the movable seat (4). The axes of the rubber plugs (13) and the detection head (5) are on the same horizontal line. A smooth rod (10) is provided between the rubber plugs (13), and a fixing plate (1002) is fixed on the outer wall of the smooth rod (10). A spring (1201) is fixed between the fixing plate (1002) and the rubber plugs (13). The spring (1201) applies elastic force to the rubber plugs (13) to insert the rubber plugs (13) into the piston pin hole.

2. The piston pin hole defect detection device according to claim 1, characterized in that: The smoothing rod (10) is slidably connected to the smoothing cavity (1001) and the sliding plate (11). The side of the rubber plug (13) that is close to each other is provided with the smoothing rod (12) which passes through one end of the smoothing rod (10) and is fixedly connected to the sliding plate (11). The spring (1201) is provided outside the smoothing rod (12).

3. The piston pin hole defect detection device according to claim 1, characterized in that: The vertical plate (101) is fixedly connected to the horizontal column (9) with a smooth cavity (901), and the side wall of the horizontal column (9) is slidably connected to the smooth rod (10). A screw (1801) is rotatably installed in the smooth cavity (901). The screw (1801) is threadedly connected to the threaded block (16). One end of the smooth rod (10) and the side wall of the threaded block (16) are respectively hinged to both ends of the connecting rod (15) through hinge seats. The side of the vertical plate (101) is provided with a motor (18) whose output end is connected to one end of the screw (1801).

4. The piston pin hole defect detection device according to claim 3, characterized in that: The smooth cavity (901) is fixed with a guide post (902) parallel to the screw (1801), and the bottom surface of the threaded block (16) is fixed with a guide block (17) that is slidably connected to the guide post (902).

5. The piston pin hole defect detection device according to claim 1, characterized in that: A ball bearing (14) is rotatably mounted on one end of the rubber stopper (13) that is far apart from each other.

6. The piston pin hole defect detection device according to claim 1, characterized in that: The top surface of the base (1) is fixedly connected to the fixed seat (2) with a smooth groove (201), and two symmetrically arranged sliding blocks (202) are slidably installed in the smooth groove (201). The sliding blocks (202) are fixedly connected to the bottom end of the movable seat (4). A bidirectional screw (301) that is threadedly connected to the sliding block (202) is rotatably installed in the smooth groove (201). A motor (3) with its output end connected to one end of the bidirectional screw (301) is provided on one side of the fixed seat (2).

7. The piston pin hole defect detection device according to claim 1, characterized in that: Two clamping plates (7) are symmetrically arranged between the movable seat (4). A telescopic rod (8) is fixed between the clamping plate (7) and the movable seat (4). A spring (801) is provided outside the telescopic rod (8), and the two ends of the spring (801) are fixedly connected to the movable seat (4) and the clamping plate (7) respectively.

8. A piston pin hole defect detection device according to claim 7, characterized in that: The clamping plate (7) has a clearance hole (701) in the middle part.

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