Engine rotating shaft stability detection device

Abstract

The utility model discloses an engine rotating shaft stability detection device, and particularly relates to the technical field of detection, the engine rotating shaft stability detection device comprises a platform, the left part of the upper end of the platform is fixedly connected with a base, the horizontal plane of the middle part of the base is fixedly connected with an electric telescopic cylinder, and the left side and the right side of the middle part of the upper end of the platform are respectively provided with a clamping device; a detector is fixedly connected to the lower side of the right portion of the clamping device located on the right portion, a crankshaft rotating shaft is jointly placed between the two clamping devices, and a driving device is fixedly connected to the upper end of the base. According to the engine rotating shaft stability detection device of the utility model, through the designed clamping device, a crankshaft rotating shaft can be clamped and fixed, and through the unique adjustable clamping design, the clamping device can be rapidly and conveniently adapted to crankshaft rotating shafts of various sizes; the universality and the practicability of the device are greatly improved; detection equipment does not need to be replaced frequently, the detection process is simplified, and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, and in particular to an engine shaft stability testing device. Background Technology

[0002] The engine crankshaft, also known as the engine crankshaft, is one of the most important components of an engine.

[0003] In the field of modern engine manufacturing, the engine shaft is a core component, and its stability is directly related to the engine's performance, reliability, and service life.

[0004] With a wide variety of engine models, the corresponding shaft sizes vary. Most existing testing devices can only fix and test shafts of specific sizes, lacking compatibility with shafts of different sizes. When testing engine shafts of different sizes, it is often necessary to replace the entire testing equipment, which undoubtedly increases testing costs and time costs significantly, severely restricts testing efficiency, and makes it difficult to meet the needs of engine manufacturers for efficient testing of diverse shafts. Therefore, an engine shaft stability testing device is needed. Utility Model Content

[0005] The main objective of this invention is to provide an engine shaft stability testing device that can effectively solve the problems mentioned above.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An engine shaft stability testing device includes a platform, with support legs fixedly connected to the four corners of the lower end of the platform. A base is fixedly connected to the upper left part of the platform, and an electric telescopic cylinder is fixedly connected to the horizontal plane of the middle part of the base. Clamping devices are installed on the left and right sides of the middle part of the upper end of the platform. A testing instrument is fixedly connected to the lower right side of the clamping device located on the right side. A crankshaft rotating shaft is placed between the two clamping devices. A drive device is fixedly connected to the upper end of the base.

[0008] Preferably, the clamping device located on the left is slidably connected to the upper left of the platform, and the clamping device located on the right is fixedly connected to the upper right of the platform, with the two clamping devices being symmetrically distributed from left to right.

[0009] Preferably, the clamping device includes an arc-shaped seat, which is mounted on the upper part of the platform. An adjustment mechanism is fixedly connected to the upper middle side of the left end of the arc-shaped seat. Connecting rods are installed inside the adjustment mechanism and on the lower middle side of the left end of the arc-shaped seat. The upper connecting rod is threadedly connected to the adjustment mechanism, and the lower connecting rod is fixedly connected to the left end of the arc-shaped seat. Clamping plates are fixedly connected to the inner cavities of the two connecting rods, and three rotating wheels are rotatably connected to the arc surfaces of the two clamping plates.

[0010] Preferably, the adjustment mechanism includes a rectangular shell, which is fixedly connected to the upper middle side of the left end of the arc-shaped seat. A threaded rod is rotatably connected between the upper end and the bottom wall of the rectangular shell, and a knob is fixedly connected to the upper end of the threaded rod.

[0011] Preferably, the connecting rod located at the upper part is threadedly connected to the outer surface of the threaded rod, the detector is fixedly connected to the lower middle side of the right end of the arc-shaped seat located on the right side, and the output end of the electric telescopic cylinder is fixedly connected to the left end of the arc-shaped seat on the left side.

[0012] Preferably, the driving device includes a drive motor, which is fixedly connected to the upper end of the base. A cross plate is fixedly connected to the output end of the drive motor. A sliding sleeve is slidably connected to the outer surface of the cross plate. A connecting shell is fixedly connected to the right end of the sliding sleeve. A bidirectional threaded rod is rotatably connected to the upper and lower ends of the connecting shell. Threaded blocks are threadedly connected to the upper and lower parts of the outer surface of the bidirectional threaded rod. Clamping blocks are fixedly connected to the right ends of the two threaded blocks.

[0013] Preferably, both threaded blocks are slidably connected to the inner cavity of the connecting shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This device, through its designed clamping mechanism, can clamp and fix the crankshaft rotating shaft. With its unique adjustable clamping design, the clamping mechanism can quickly and easily adapt to various crankshaft rotating shafts of different sizes, greatly improving the versatility and practicality of the device. It eliminates the need for frequent replacement of testing equipment, simplifies the testing process, and improves testing efficiency.

[0016] 2. This device, through its designed drive mechanism, can drive crankshafts of different sizes for rotational testing, eliminating the need for operators to first determine the size of the crankshaft and then adjust or replace the fitting fixtures, significantly shortening the testing preparation time and improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2This is a schematic diagram of the overall structure of this utility model from another perspective;

[0019] Figure 3 This is a schematic diagram of the clamping device structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the adjustment mechanism structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the drive device structure of this utility model.

[0022] In the diagram: 1. Platform; 2. Support leg; 3. Detector; 4. Crankshaft rotation shaft; 5. Clamping device; 6. Drive device; 7. Electric telescopic cylinder; 8. Base; 51. Arc-shaped seat; 52. Connecting rod; 53. Clamping plate; 54. Rotary wheel; 55. Adjustment mechanism; 551. Rectangular shell; 552. Threaded rod one; 553. Knob; 61. Drive motor; 62. Cross plate; 63. Sliding sleeve; 64. Bidirectional threaded rod; 65. Clamping block; 66. Threaded block; 67. Connecting shell. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Example 1

[0025] like Figure 1 and Figure 2 As shown, an engine shaft stability testing device includes a platform 1, with support legs 2 fixedly connected to the four corners of the lower end of the platform 1, a base 8 fixedly connected to the upper left part of the platform 1, an electric telescopic cylinder 7 fixedly connected to the horizontal plane of the middle part of the base 8, clamping devices 5 installed on the left and right sides of the upper middle part of the platform 1, a testing instrument 3 fixedly connected to the lower right side of the clamping device 5 located on the right side, a crankshaft rotating shaft 4 placed between the two clamping devices 5, and a drive device 6 fixedly connected to the upper end of the base 8.

[0026] This device is powered by a standard voltage.

[0027] Before implementing this device, one side of the crankshaft rotating shaft 4 needs to be placed inside the clamping device 5 located on the right. Then, the operator holds the other side of the crankshaft rotating shaft 4 with one hand and starts the electric telescopic cylinder 7. When the electric telescopic cylinder 7 moves, its output end will extend, pushing the clamping device 5 located on the left to move to the right, so that the clamping device 5 located on the left supports the other side of the crankshaft rotating shaft 4. Then, the electric telescopic cylinder 7 is closed, so that the clamping device 5 located on the left is fixed in place. Then, the operator releases the crankshaft rotating shaft 4, so that the crankshaft rotating shaft 4 is supported inside the two clamping devices 5. Then, the clamping devices 5 on both sides are rotated to clamp and fix the crankshaft rotating shaft 4, so that the crankshaft rotating shaft 4 is stably fixed on the clamping devices 5.

[0028] In the above process, after the crankshaft rotating shaft 4 is fixed, the drive device 6 is pulled to the right so that the drive device 6 is in contact with the outer surface of the clamping device 5 on the left side of the crankshaft rotating shaft 4. Then the drive device 6 is rotated to fix the crankshaft rotating shaft 4. After the fixing is completed, the drive device 6 is started to move, so that the drive device 6 drives the crankshaft rotating shaft 4 to rotate. Then the detector 3 is started in sequence to detect the crankshaft rotating shaft 4.

[0029] In the above, this device uses the speed fluctuation detection method. Under normal circumstances, the speed of crankshaft rotating shaft 4 should be relatively stable. When the shaft is abnormal, it will cause the speed to fluctuate. By detecting the change in the speed of the shaft, its stability can be judged.

[0030] The detector 3 is a speed sensor, which is a device used to measure the speed of a rotating object. It plays an important role in the detection of the smoothness of the engine shaft. It is mainly based on electromagnetic induction, photoelectric effect or Hall effect. The speed sensor is used to measure the real-time speed of the crankshaft shaft 4 and observe the fluctuation range of the speed. The smaller the speed fluctuation, the better the smoothness of the shaft.

[0031] It can use the existing technology of the Honeywel SS495A Hall effect speed sensor.

[0032] The clamping device 5 and the driving device 6 of this device can clamp and fix crankshaft rotating shafts 4 of different sizes and lengths, thereby improving the practicality of the device.

[0033] Example 2

[0034] Furthermore, in order to achieve the goal of clamping and fixing the crankshaft shaft 4 with the clamping device 5 and allowing the crankshaft shaft 4 to still rotate on the clamping device 5 when the driving device 6 drives the crankshaft shaft 4 to rotate, refer to... Figure 3 and Figure 4The clamping device 5 includes an arc-shaped seat 51, which is installed on the upper end of the platform 1. An adjustment mechanism 55 is fixedly connected to the upper middle side of the left end of the arc-shaped seat 51. A connecting rod 52 is installed inside the adjustment mechanism 55 and on the lower middle side of the left end of the arc-shaped seat 51. The upper connecting rod 52 is threadedly connected to the adjustment mechanism 55, and the lower connecting rod 52 is fixedly connected to the left end of the arc-shaped seat 51. A clamping plate 53 is fixedly connected to the inner cavity of both connecting rods 52. Three rotating wheels 54 are rotatably connected to the arc surfaces of both clamping plates 53.

[0035] Furthermore, the adjustment mechanism 55 includes a rectangular shell 551, which is fixedly connected to the upper middle side of the left end of the arc-shaped seat 51. A threaded rod 552 is rotatably connected between the upper end of the rectangular shell 551 and the bottom wall. A knob 553 is fixedly connected to the upper end of the threaded rod 552.

[0036] Furthermore, the connecting rod 52 located at the top is threaded to the outer surface of the threaded rod 552, the detector 3 is fixedly connected to the lower middle side of the right end of the arc-shaped seat 51 located on the right, and the output end of the electric telescopic cylinder 7 is fixedly connected to the left end of the arc-shaped seat 51 on the left.

[0037] In the above process, the right side of the crankshaft shaft 4 is first placed on the clamping plate 53 connected to the right-side arc-shaped seat 51. Then, the electric telescopic cylinder 7 is activated to move the arc-shaped seat 51 on the left side to the right, so that the central hole of the arc-shaped seat 51 passes through the left side of the crankshaft shaft 4. When the left side of the crankshaft shaft 4 protrudes, the electric telescopic cylinder 7 is closed, so that the left side of the crankshaft shaft 4 is placed on the clamping plate 53 of the left-side arc-shaped seat 51. Then, the knob 553 is rotated, so that the knob 553 drives the threaded rod 552 to rotate. When the threaded rod 552 rotates, it will drive the upper connecting rod 52 to move downward through the threaded connection with the upper connecting rod 52. At the same time, the connecting rod 52 drives the upper clamping plate 53 to move downward, so that the two clamping plates 53 clamp and fix the left and right sides of the crankshaft shaft 4 through the rotating wheel 54.

[0038] In the above, after the crankshaft rotating shaft 4 is fixed, the crankshaft rotating shaft 4 is driven to rotate by the drive device 6. Under the action of the rotating wheel 54, it will rotate on the clamping plate 53. When the crankshaft rotating shaft 4 rotates, the detector 3 will detect the crankshaft rotating shaft 4 to detect the smoothness of the crankshaft rotating shaft 4 during rotation.

[0039] Furthermore, in order to achieve the purpose of extending the drive unit 6 to connect with the crankshaft rotating shaft 4 and driving the crankshaft rotating shaft 4 to rotate, refer to... Figure 5The drive device 6 includes a drive motor 61, which is fixedly connected to the upper end of the base 8. A cross plate 62 is fixedly connected to the output end of the drive motor 61. A sliding sleeve 63 is slidably connected to the outer surface of the cross plate 62. A connecting shell 67 is fixedly connected to the right end of the sliding sleeve 63. A bidirectional threaded rod 64 is rotatably connected to the upper and lower ends of the connecting shell 67. Threaded blocks 66 are threadedly connected to the upper and lower parts of the outer surface of the bidirectional threaded rod 64. Clamping blocks 65 are fixedly connected to the right ends of the two threaded blocks 66.

[0040] Furthermore, both threaded blocks 66 are slidably connected to the inner cavity of the connecting shell 67.

[0041] In the above process, after the clamping device 5 fixes the crankshaft rotating shaft 4, the sliding sleeve 63 is pulled to make the clamping plate 53 slide to the right on the outer surface of the cross plate 62. When the sliding sleeve 63 slides, it will drive the connecting shell 67 to move together, and the connecting shell 67 will drive the clamping block 65 to move. When the connecting shell 67 is close to the left end of the crankshaft rotating shaft 4, the sliding sleeve 63 is stopped, and then the bidirectional threaded rod 64 is rotated. When the bidirectional threaded rod 64 rotates, it will drive the threaded block 66 to move towards the side that is closer to each other, and the threaded block 66 will drive the two clamping blocks 65 to move towards the side that is closer to each other, so that the clamping block 65 clamps and fixes the part of the protruding arc-shaped seat 51 on the left side of the crankshaft rotating shaft 4. After the clamping is completed, the drive motor 61 is started to move. When the drive motor 61 moves, its output end will rotate. The output end of the drive motor 61 will drive the cross plate 62 to rotate through the coupling, which will cause the cross plate 62 to drive the sliding sleeve 63 to rotate. When the sliding sleeve 63 rotates, it will transmit power to the clamping block 65 through the connecting shell 67 and the threaded block 66, causing the clamping block 65 to drive the crankshaft rotating shaft 4 to rotate, so as to perform a smoothness test when the crankshaft rotating shaft 4 rotates.

[0042] It should be noted that the specific installation method, circuit connection method, and control method of the electric telescopic cylinder 7 and drive motor 61 used in this utility model are all conventional designs, and will not be described in detail in this utility model.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An engine shaft stability testing device, comprising a platform (1), characterized in that: The platform (1) has four fixed support legs (2) at its lower corners. The platform (1) has a base (8) fixedly connected to its upper left side. An electric telescopic cylinder (7) is fixedly connected to the middle horizontal plane of the base (8). Clamping devices (5) are installed on the left and right sides of the upper middle part of the platform (1). A detector (3) is fixedly connected to the lower right side of the clamping device (5) located on the right side. A crankshaft rotating shaft (4) is placed between the two clamping devices (5). A drive device (6) is fixedly connected to the upper end of the base (8).

2. An engine rotational shaft smoothness detection device according to claim 1, characterized by: The clamping device (5) located on the left is slidably connected to the upper left of the platform (1), and the clamping device (5) located on the right is fixedly connected to the upper right of the platform (1). The two clamping devices (5) are symmetrically distributed on the left and right.

3. An engine rotational shaft smoothness detection device according to claim 1, characterized by: The clamping device (5) includes an arc-shaped seat (51), which is installed on the upper end of the platform (1). An adjustment mechanism (55) is fixedly connected to the upper middle side of the left end of the arc-shaped seat (51). A connecting rod (52) is installed inside the adjustment mechanism (55) and on the lower middle side of the left end of the arc-shaped seat (51). The upper connecting rod (52) is threadedly connected to the adjustment mechanism (55), and the lower connecting rod (52) is fixedly connected to the left end of the arc-shaped seat (51). A clamping plate (53) is fixedly connected to the inner cavity of both connecting rods (52). Three rotating wheels (54) are rotatably connected to the arc surfaces of both clamping plates (53).

4. An engine rotational shaft smoothness detection device according to claim 3, characterized in that: The adjustment mechanism (55) includes a rectangular shell (551), which is fixedly connected to the upper middle side of the left end of the arc-shaped seat (51). A threaded rod (552) is rotatably connected between the upper end of the rectangular shell (551) and the bottom wall. A knob (553) is fixedly connected to the upper end of the threaded rod (552).

5. An engine shaft smoothness detection device according to claim 4, characterized in that: The connecting rod (52) located at the top is threaded to the outer surface of the threaded rod (552). The detector (3) is fixedly connected to the lower middle side of the right end of the arc-shaped seat (51) located on the right. The output end of the electric telescopic cylinder (7) is fixedly connected to the left end of the arc-shaped seat (51) on the left.

6. An engine shaft smoothness detection device according to claim 1, characterized in that: The driving device (6) includes a drive motor (61), which is fixedly connected to the upper end of the base (8). A cross plate (62) is fixedly connected to the output end of the drive motor (61). A sliding sleeve (63) is slidably connected to the outer surface of the cross plate (62). A connecting shell (67) is fixedly connected to the right end of the sliding sleeve (63). A bidirectional threaded rod (64) is rotatably connected to the upper and lower ends of the connecting shell (67). Threaded blocks (66) are threadedly connected to the upper and lower parts of the outer surface of the bidirectional threaded rod (64). A clamping block (65) is fixedly connected to the right end of each of the two threaded blocks (66).

7. An engine shaft smoothness detection device according to claim 6, characterized in that: Both of the threaded blocks (66) are slidably connected to the inner cavity of the connecting shell (67).

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