Crankshaft plugging device for engine sealing test

Abstract

The utility model relates to the technical field of engine sealing tests, and discloses a crankshaft plugging device for an engine sealing test, the surface of a platform is fixedly connected with a guide rail, the surface of the guide rail is slidably connected with a sliding block, the surface of the sliding block is fixedly connected with a bearing plate, and the bearing plate is fixedly connected with a bearing block. The surface of the bearing plate is provided with a plurality of sets of positioning grooves distributed in an array mode, the surface of the bearing plate is provided with a pushing assembly, the pushing assembly comprises a moving table, the moving table is slidably connected to the surface of the bearing plate, and the surface of the moving table is fixedly connected with a stand column. According to the crankshaft plugging device for the engine sealing test, a worker holds a holding rod and applies thrust, a telescopic rod extends to drive a stand column to enable a movable table to slide on a bearing plate in the direction of a guide rod, movement of the holding rod can drive a traction plate to act, then a pressing plate slides upwards in a sliding groove, and an insertion rod is separated from a positioning groove; at the moment, the moving table freely drives the plugging disc to move.

Description

Technical Field

[0001] This utility model relates to the field of engine sealing test technology, specifically to a crankshaft sealing device for engine sealing test. Background Technology

[0002] An engine is mainly composed of three parts: cylinder block, cylinder head, and crankshaft. After the machining of these three parts is completed, the engine is assembled on the assembly line. After assembly, a sealing test, also known as a leak test, is required. There are six threaded holes on the flange face at one end of the crankshaft. These six threaded holes need to be sealed in order to complete the sealing test.

[0003] According to a public notice (CN218994629U) regarding a crankshaft sealing test device for engines, in the automatic operation mode of the aforementioned application, the cylinder extends and retracts to drive the sealing disc to seal the six threaded holes at the large end of the engine crankshaft. When switching to manual mode, the manual control unit is manually pushed and pulled to seal the six threaded holes at the large end of the engine crankshaft. The dual pneumatic and manual operation modes ensure production cycle time and improve work efficiency.

[0004] However, after the cylinder is damaged, it cannot extend or retract, and the sealing mechanism cannot be moved manually. Furthermore, when the sealing mechanism contacts the crankshaft big end, it requires continuous manual pressure, which can easily cause fatigue for the workers. Utility Model Content

[0005] The purpose of this invention is to provide a crankshaft sealing device for engine sealing tests, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a crankshaft sealing device for engine sealing tests, wherein a guide rail is fixedly connected to the surface of the platform, a slider is slidably connected to the surface of the guide rail, a bearing plate is fixedly connected to the surface of the slider, multiple arrayed positioning grooves are formed on the surface of the bearing plate, a pushing assembly is provided on the surface of the bearing plate, the pushing assembly includes a moving stage, the moving stage is slidably connected to the surface of the bearing plate, a column is fixedly connected to the surface of the moving stage, a telescopic rod is fixedly connected to the side wall of the column, a handle is fixedly connected to the end of the telescopic rod, an extension rod is fixedly connected to the end of the moving stage, and a sealing disc is fixedly connected to the end of the extension rod.

[0007] Preferably, the side wall of the column is provided with a fixing component, the fixing component includes a sliding groove, the sliding groove is formed on the side wall of the column, a pressure plate is slidably connected inside the sliding groove, an insert rod is fixedly connected to the bottom surface of the pressure plate, the insert rod is inserted into the inside of the positioning groove, a traction plate is hinged to the surface of the pressure plate, and the end of the traction plate away from the pressure plate is hinged to the end of the handle.

[0008] Preferably, the side wall of the moving platform has a through hole, and a guide rod slides in the through hole. One end of the guide rod is fixedly connected to the side wall of the support plate, and the other end of the guide rod is fixedly connected to a positioning block, which is fixedly connected to the surface of the support plate.

[0009] Preferably, the surface of the pressure plate has a through hole, and a positioning rod is slidably connected in the through hole, the end of the positioning rod being fixedly connected to the inner wall of the slide groove.

[0010] Preferably, the pressure plate and the inner wall of the slide are elastically connected by a return spring.

[0011] Preferably, a bracket is fixedly connected to the surface of the platform, a cylinder is fixedly connected to the side wall of the bracket, the output shaft of the cylinder passes through and is slidably connected to the side wall of the bracket, and the output shaft of the cylinder is fixedly connected to the end of the bearing plate.

[0012] Compared with the prior art, this utility model provides a crankshaft sealing device for engine sealing tests, which has the following advantages:

[0013] 1. The crankshaft sealing device used for the engine sealing test is used by the operator to hold the handle and apply a pushing force. The telescopic rod extends and drives the column to make the moving platform slide on the bearing plate along the direction of the guide rod. The movement of the handle will drive the traction plate to move, which in turn causes the pressure plate to slide upward in the slide groove. The insertion rod is disengaged from the positioning groove. At this time, the moving platform can freely drive the sealing plate to move.

[0014] 2. The crankshaft sealing device for the engine sealing test, by releasing the gripping rod and pressing it against the moving platform, under the action of the return spring, the pressure plate moves downward, and the insertion rod is reinserted into the positioning groove, fixing the position of the moving platform, thus avoiding the need for manual continuous pressure to be applied to the sealing plate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the driving component of this utility model;

[0017] Figure 3 This is a schematic diagram of the fixing component structure of this utility model.

[0018] In the diagram: 1. Platform; 11. Bracket; 12. Cylinder; 2. Guide rail; 3. Slider; 4. Bearing plate; 41. Positioning groove; 5. Pushing assembly; 51. Moving table; 52. Guide rod; 53. Positioning block; 54. Column; 55. Telescopic rod; 56. Handle rod; 57. Extension rod; 58. Sealing plate; 6. Fixing assembly; 61. Slide groove; 62. Pressure plate; 63. Positioning rod; 64. Return spring; 65. Insert rod; 66. Traction plate. Detailed Implementation

[0019] like Figures 1-3 As shown, this utility model provides a technical solution: a crankshaft sealing device for engine sealing tests, including a platform 1, a guide rail 2 fixedly connected to the surface of the platform 1, a slider 3 slidably connected to the surface of the guide rail 2, a support plate 4 fixedly connected to the surface of the slider 3, multiple arrayed positioning grooves 41 formed on the surface of the support plate 4, a bracket 11 fixedly connected to the surface of the platform 1, a cylinder 12 fixedly connected to the side wall of the bracket 11, the output shaft of the cylinder 12 passing through and slidably connected to the side wall of the bracket 11, and the output shaft of the cylinder 12 fixedly connected to the end of the support plate 4. The platform 1 is fixedly mounted on a frame, and the cylinder 12 drives the support plate 4 to move along the direction of the guide rail 2 through its output shaft, realizing the automatic control of the sealing disc 58 to seal and release the engine crankshaft.

[0020] like Figures 2-3 As shown, a pushing component 5 is provided on the surface of the support plate 4. The pushing component 5 includes a moving stage 51, which is slidably connected to the surface of the support plate 4. The moving stage 51 drives the sealing disc 58 to move, thereby realizing the manual sealing function. The side wall of the moving platform 51 has a through hole, and a guide rod 52 slides in the through hole. One end of the guide rod 52 is fixedly connected to the side wall of the support plate 4, and the other end of the guide rod 52 is fixedly connected to a positioning block 53. The positioning block 53 is fixedly connected to the surface of the support plate 4. The guide rod 52 guides the movement of the moving platform 51, ensuring that the moving platform 51 slides smoothly along the direction of the guide rod 52 and preventing the moving platform 51 from deviating during movement. The positioning block 53 fixes one end of the guide rod 52 and also serves as a limiting structure for the movement of the moving platform 51, preventing the moving platform 51 from moving excessively. A column 54 is fixedly connected to the surface of the moving platform 51. A telescopic rod 55 is fixedly connected to the side wall of the column 54. A grip rod 56 is fixedly connected to the end of the telescopic rod 55. An extension rod 57 is fixedly connected to the end of the moving platform 51. A sealing plate 58 is fixedly connected to the end of the extension rod 57. By gripping the lever 56 and applying a pushing force, the telescopic rod 55 drives the column 54 to move the moving platform 51 on the support plate 4, and the sealing plate 58 directly contacts the large end of the engine crankshaft to seal the engine crankshaft for engine sealing test.

[0021] like Figures 2-3As shown, a fixing component 6 is provided on the side wall of the column 54. The fixing component 6 includes a slide groove 61, which is opened on the side wall of the column 54. A pressure plate 62 is slidably connected inside the slide groove 61. A through hole is opened on the surface of the pressure plate 62, and a positioning rod 63 is slidably connected in the through hole. The end of the positioning rod 63 is fixedly connected to the inner wall of the slide groove 61. The positioning rod 63 guides the movement of the pressure plate 62, ensuring that the pressure plate 62 moves smoothly in the slide groove 61 along the direction of the positioning rod 63. The pressure plate 62 and the inner wall of the slide groove 61 are elastically connected by a return spring 64. An insertion rod 65 is fixedly connected to the bottom surface of the pressure plate 62. The insertion rod 65 is inserted into the inside of the positioning groove 41. By sliding the pressure plate 62 in the slide groove 61, the position of the moving platform 51 is fixed through the cooperation of the insertion rod 65 and the positioning groove 41. When the pressure plate 62 is subjected to external force, it can move upward, causing the insertion rod 65 to disengage from the positioning groove 41, thereby releasing the fixation of the moving platform 51. When the external force disappears, under the action of the return spring 64, the pressure plate 62 moves downward, and the insertion rod 65 re-inserts into the positioning groove 41, thus fixing the moving platform 51 and avoiding the need for manual application of continuous pressure to the sealing disc 58. A traction plate 66 is hinged to the surface of the pressure plate 62, with the end of the traction plate 66 away from the pressure plate 62 hinged to the end of the handle 56. When the handle 56 is pushed, the telescopic rod 55 extends, and the traction plate 66 drives the pressure plate 62 to move upward in the slide groove 61, thereby fixing and releasing the position of the moving platform 51.

[0022] In this invention, when encountering a cylinder 12 malfunction or requiring manual operation, the operator grips the lever 56 and applies a pushing force. The telescopic rod 55 extends, causing the column 54 to move the moving platform 51 along the direction of the guide rod 52 on the bearing plate 4. During the pushing of the lever 56, since the lever 56 is hinged to the pressure plate 62 via the traction plate 66, the movement of the lever 56 will cause the traction plate 66 to move, thereby causing the pressure plate 62 to slide upward in the slide groove 61. The insertion rod 65 disengages from the positioning groove 41, at which point the moving platform 51 can move freely. After the sealing disc 58 moves to the large end of the engine crankshaft and completes the sealing, the lever 56 is released and pressed against the moving platform 51. Under the action of the return spring 64, the pressure plate 62 moves downward, and the insertion rod 65 re-inserts into the positioning groove 41, fixing the position of the moving platform 51 and avoiding the need for continuous manual pressure on the sealing disc 58.

[0023] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A crankshaft sealing device for engine sealing test, comprising a platform (1), characterized in that: The surface of the platform (1) is fixedly connected to a guide rail (2), the surface of the guide rail (2) is slidably connected to a slider (3), the surface of the slider (3) is fixedly connected to a support plate (4), the surface of the support plate (4) has multiple arrayed positioning grooves (41), the surface of the support plate (4) is provided with a pushing component (5), the pushing component (5) includes a moving stage (51), the moving stage (51) is slidably connected to the surface of the support plate (4), the surface of the moving stage (51) is fixedly connected to a column (54), the side wall of the column (54) is fixedly connected to a telescopic rod (55), the end of the telescopic rod (55) is fixedly connected to a handle (56), the end of the moving stage (51) is fixedly connected to an extension rod (57), and the end of the extension rod (57) is fixedly connected to a sealing plate (58).

2. The crankshaft sealing device for engine sealing test according to claim 1, characterized in that: The side wall of the column (54) is provided with a fixing component (6), the fixing component (6) includes a slide groove (61), the slide groove (61) is opened on the side wall of the column (54), a pressure plate (62) is slidably connected inside the slide groove (61), a plug rod (65) is fixedly connected to the bottom surface of the pressure plate (62), the plug rod (65) is inserted into the inside of the positioning groove (41), a traction plate (66) is hinged to the surface of the pressure plate (62), and the end of the traction plate (66) away from the pressure plate (62) is hinged to the end of the handle (56).

3. The crankshaft sealing device for engine sealing test according to claim 1, characterized in that: The side wall of the moving platform (51) has a through hole, and a guide rod (52) slides in the through hole. One end of the guide rod (52) is fixedly connected to the side wall of the bearing plate (4), and the other end of the guide rod (52) is fixedly connected to a positioning block (53). The positioning block (53) is fixedly connected to the surface of the bearing plate (4).

4. The crankshaft sealing device for engine sealing test according to claim 2, characterized in that: The pressure plate (62) has a through hole on its surface, and a positioning rod (63) is slidably connected in the through hole. The end of the positioning rod (63) is fixedly connected to the inner wall of the slide groove (61).

5. The crankshaft sealing device for engine sealing test according to claim 2, characterized in that: The pressure plate (62) and the inner wall of the slide (61) are elastically connected by a return spring (64).

6. The crankshaft sealing device for engine sealing test according to claim 1, characterized in that: A bracket (11) is fixedly connected to the surface of the platform (1), and a cylinder (12) is fixedly connected to the side wall of the bracket (11). The output shaft of the cylinder (12) passes through and is slidably connected to the side wall of the bracket (11). The output shaft of the cylinder (12) is fixedly connected to the end of the bearing plate (4).

Images