Crankshaft eccentricity positioning detection device

Abstract

The utility model relates to a crankshaft eccentricity positioning detection device which comprises a bottom plate, two ends of the upper part of the bottom plate are provided with limiting plates, and the upper part of the bottom plate is provided with a clamping mechanism close to one of the limiting plates; the clamping mechanism comprises a first guide rail, two first sliding blocks are installed on the first guide rail in a sliding mode, guide blocks are fixedly installed on the two first sliding blocks respectively, abutting columns are symmetrically installed on the opposite side faces of the two guide blocks, the two first sliding blocks are in threaded connection through a two-way screw, and the screwing-in directions of threads at the two ends of the two-way screw are opposite. One end of the guide rail I is fixedly provided with a limiting seat; one end of the two-way screw is rotationally arranged on the limiting seat; a limiting groove of the limiting plate is of a V-shaped structure. When the device is used, the rotating wheel is rotated, the two-way screw drives the first sliding blocks at the two ends to get close to each other, it is ensured that the abutting column abuts against the crankshaft center shaft, the detection mechanisms on the two sides are moved to detect crankshaft eccentric data on the top of the crankshaft eccentric shaft and crankshaft data on one side of the outer wall of the crankshaft eccentric shaft, and errors caused by manual detection are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft detection, in particular to a crankshaft eccentric positioning detection device. Background Art

[0002] The crankshaft is one of the important parts in an internal combustion engine. It is the backbone of the engine and a key part that bears impact loads and transmits power. The working environment and stress conditions of the crankshaft are very complex. When working, it bears the combined action of periodically changing gas pressure, centrifugal force, and inertia force, etc. Therefore, in the manufacturing process, high requirements are imposed on the dimensional accuracy, position accuracy, and surface roughness of each part of the crankshaft.

[0003] After the production of the crankshaft, it is necessary to detect the eccentricity and phase of the crankshaft to ensure dimensional accuracy and position accuracy. At present, when detecting the eccentricity and phase of the crankshaft, most are manual detections, and the eccentricity and phase of the crankshaft are detected separately. This method has low efficiency and large errors. Summary of the Invention

[0004] In view of this, the purpose of the utility model is to provide a crankshaft eccentric positioning detection device to solve the problems raised in the above background art.

[0005] In order to achieve the above purpose, the following technical solutions are further adopted:

[0006] The crankshaft eccentric positioning detection device includes a bottom plate. At both ends of the upper part of the bottom plate, limiting plates are respectively installed. At a position on the upper part of the bottom plate and close to one of the limiting plates, a clamping mechanism is installed.

[0007] The clamping mechanism includes a first guide rail. Two first sliders are slidably installed on the first guide rail. Guide blocks are respectively fixedly installed on the two first sliders. Top columns are symmetrically installed on the opposing side surfaces of the two guide blocks. The two first sliders are threadedly connected by a bidirectional screw. The thread rotation directions at both ends of the bidirectional screw are opposite. One end of the first guide rail is fixedly installed with a limiting seat, and one end of the bidirectional screw is rotatably installed on the limiting seat.

[0008] The limiting groove of the limiting plate is of a V-shaped structure.

[0009] As a further improvement of the utility model, a rotating wheel for manual rotation is installed at one end of the bidirectional screw.

[0010] As a further improvement of the utility model, second guide rails and third guide rails are installed on both sides between the clamping mechanism and the limiting plates of the bottom plate. The second guide rail and the third guide rail are arranged in parallel, and detection mechanisms are respectively installed on the second guide rail and the third guide rail.

[0011] The detection mechanism includes a second slider. A guide rod is vertically fixedly installed on the second slider. A detection gauge is slidably connected to the guide rod.

[0012] As a further improvement of the present utility model, a long through-hole is provided on the bottom plate, and the limiting plate is connected to the long through-hole by bolts. The extending direction of the long through-hole is consistent with the extending directions of the second guide rail and the third guide rail.

[0013] The beneficial effects of the present utility model are as follows:

[0014] The device has a simple structure and is easy to manufacture. By rotating the rotating wheel, the bidirectional screw drives the sliders at both ends to approach each other, ensuring that the top contact column abuts against the central axis of the crankshaft. Move the detection mechanisms on both sides to detect the eccentricity data of the crankshaft at the top of the eccentric shaft of the crankshaft and detect the crankshaft data on one side of the outer wall of the eccentric shaft of the crankshaft, avoiding the errors caused by manual detection. Description of the Drawings

[0015] The drawings constituting a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0016] Figure 1 It is a schematic structural diagram of the present utility model. Detailed Embodiments

[0017] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0018] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.

[0019] Please refer to Figure 1 , a crankshaft eccentricity positioning detection device, including a bottom plate 1, limiting plates 2 are respectively installed at both ends of the upper part of the bottom plate 1, and a clamping mechanism 3 is installed at a position on the upper part of the bottom plate 1 and close to one of the limiting plates 2;

[0020] The clamping mechanism 3 includes a first guide rail 31. Two first sliders 32 are slidably mounted on the first guide rail 31. Guide blocks 33 are respectively and fixedly mounted on the two first sliders 32. Jacking columns 34 are symmetrically mounted on the opposite sides of the two guide blocks 33. The two first sliders 32 are threadedly connected by a bidirectional screw 35. The thread rotation directions at both ends of the bidirectional screw 35 are opposite. A runner 36 for manual rotation is mounted at one end of the bidirectional screw 35. A limit seat 37 is fixedly mounted at one end of the first guide rail 31. One end of the bidirectional screw 35 is rotatably mounted on the limit seat 37;

[0021] The limiting groove of the limiting plate 2 is of a V-shaped structure. A long through hole 11 is formed in the bottom plate 1. The limiting plate 2 is connected by bolts to the long through hole 11. The extending direction of the long through hole 11 is the same as the extending directions of the second guide rail 12 and the third guide rail 13.

[0022] The bottom plate 1 is provided with a second guide rail 12 and a third guide rail 13 on both sides between the clamping mechanism 3 and the limiting plate 2. The second guide rail 12 and the third guide rail 13 are arranged in parallel. Detection mechanisms 4 are respectively mounted on the second guide rail 12 and the third guide rail 13;

[0023] The detection mechanism 4 includes a second slider 41. A guide rod 42 is vertically and fixedly mounted on the second slider 41. The guide rod 42 is slidably connected with a detection gauge 43 through a third slider 44;

[0024] During use, place the crankshaft on the two limiting plates 2. Rotate the runner 36. The bidirectional screw 35 drives the two first sliders 32 at both ends to approach, ensuring that the jacking columns 34 abut against the central axis of the crankshaft. At the same time, move the detection mechanisms 4 on both sides. One detection gauge 43 detects the top of the eccentric shaft of the crankshaft to detect the eccentric data of the crankshaft; the other detection gauge 43 detects one side of the outer wall of the eccentric shaft of the crankshaft to detect the phase data of the crankshaft.

[0025] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A crankshaft eccentric positioning detection device, comprising a base plate, with limit plates respectively installed at both ends of the upper portion of the base plate, characterized in that: A supporting mechanism is installed at the upper part of the bottom plate and close to one of the limit plates; The holding mechanism comprises a guide rail 1, two sliders 1 are slidably mounted on the guide rail 1, guide blocks are fixedly mounted on the two sliders 1 respectively, top connection columns are symmetrically mounted on opposite sides of the two guide blocks, the two sliders 1 are threadedly connected by a bidirectional screw, the threads at both ends of the bidirectional screw are screwed in opposite directions, one end of the guide rail 1 is fixedly mounted on the limit seat, and one end of the bidirectional screw is rotatably mounted on the limit seat; The limiting groove of the limiting plate is in a V-shaped structure.

2. The crankshaft eccentric positioning detection device according to claim 1, characterized in that: A rotating wheel for manual rotation is installed at one end of the bidirectional screw.

3. The crankshaft eccentric positioning detection device according to claim 1, characterized in that: The bottom plate is provided with guide rails 2 and 3 on both sides between the supporting mechanism and the limiting plate. The guide rails 2 and 3 are arranged in parallel. The guide rails 2 and 3 are provided with detection mechanisms respectively. The detection mechanism comprises a second slide block, on which a guide rod is vertically fixedly installed, and a detection table is slidably connected to the guide rod.

4. The crankshaft eccentric positioning detection device according to claim 3, characterized in that: A long opening is provided on the bottom plate, and the limiting plate is connected to the long opening by bolts, and the extension direction of the long opening is consistent with the extension direction of the guide rail two and the guide rail three.

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