Supporting platform for large crankshaft detection

Abstract

The utility model belongs to the technical field of supporting platforms, and particularly relates to a supporting platform for large crankshaft detection, which comprises a pedestal, two fixed side plates are symmetrically welded on the surface of the pedestal, a movable plate is movably mounted in each fixed side plate, and a placement frame is welded on the surface of each movable plate. An external switch of the electric telescopic rod is started, the telescopic end of the electric telescopic rod moves upwards, when the telescopic end of the electric telescopic rod moves upwards, the movable plates on the two sides are driven by the linkage plate to move upwards, and therefore the height of the containing frame can be increased. When the height of the large crankshaft on the placing frame reaches the adaptive height, the electric telescopic rod is stopped, then the corresponding positioning rod penetrates through the fixed plate and the threaded hole to be connected with the movable plate in a penetrating mode, and the positioning rod is tightened to be fixed in the movable plate. In this way, the movable plate and the fixed plate can be fixed to the current position, and therefore the large crankshaft can be kept at the adjusted height.

Description

A support platform for testing large crankshafts Technical Field

[0001] This utility model belongs to the field of support platform technology, specifically relating to a support platform for testing large crankshafts. Background Technology

[0002] In the field of modern machinery manufacturing, large crankshafts are key components of core equipment such as engines, and their manufacturing precision directly affects the overall performance and service life of the equipment. Therefore, rigorous and comprehensive testing is required during the production process. Existing support platforms for testing large crankshafts typically consist of a fixed mounting frame and a base. By placing the large crankshaft on the fixed mounting frame, stable support is provided for the testing work.

[0003] However, with the continuous development of testing technology, various high-precision and multi-functional testing instruments have emerged, and different testing instruments have significantly different requirements for crankshaft testing height. Existing support platforms, due to their fixed placement height, cannot be flexibly adjusted according to the actual needs of the testing instruments. This makes it difficult to ensure that the testing instruments are in the optimal testing position relative to the large crankshaft when using testing instruments of different height specifications. This not only reduces testing efficiency but may also affect the accuracy and reliability of the testing data due to deviations in the testing position. Summary of the Invention

[0004] The purpose of this invention is to provide a support platform for the inspection of large crankshafts. This addresses the issue that with the continuous development of inspection technology and the emergence of various high-precision, multi-functional inspection instruments, different instruments have significantly different requirements for crankshaft inspection height. Existing support platforms, due to their fixed mounting height, cannot be flexibly adjusted according to the actual needs of the inspection instruments. This makes it difficult to ensure that the inspection instrument and the large crankshaft are in the optimal inspection position when using inspection instruments of different heights. This not only reduces inspection efficiency but may also affect the accuracy and reliability of the inspection data due to deviations in the inspection position.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a support platform for testing large crankshafts, including a base, two fixed side plates symmetrically welded on the surface of the base, a movable plate movably installed inside each fixed side plate, a placement frame welded on the surface of the movable plate, and a set of ball bearings movably fitted in the arc-shaped inner wall at the top of the placement frame for placing large crankshafts.

[0006] A mounting frame is welded into the cavity of the pedestal. An electric telescopic rod is installed on the outer wall of the center end of the mounting frame. The fixed end of the electric telescopic rod extends through the table surface of the pedestal to its outside. The telescopic end of the electric telescopic rod is fixedly installed at the bottom of the connecting plate. Both ends of the connecting plate are respectively welded to a movable plate.

[0007] In order to enable the mounting block at the bottom of the rubber plate to align with the mounting base, as a support platform for large crankshaft testing according to this utility model, preferably, a fixing plate is welded to the outer wall of one side of the movable plate, a positioning rod is threaded through the outer wall of the fixing plate near the bottom, a guide groove is opened on the outer walls of the left and right sides of the movable plate, a guide strip is fixedly installed on the inner walls of the left and right sides of the fixing plate, and a threaded hole is opened through the outer wall of one side of the fixing plate;

[0008] The positioning rod is threaded through the fixing plate and threaded into the corresponding threaded hole. The positioning rod passes through the threaded hole and passes through the movable plate inside the fixing side plate to connect with the inner wall of the fixing side plate.

[0009] In order to ensure that the mounting block can be fixed in the mounting base after installation, as a support platform for large crankshaft testing according to this utility model, preferably, the guide grooves on both sides of the movable plate are slidably connected to a guide strip, and the outer walls on the left and right sides of the movable plate do not contact the inner walls on the left and right sides of the fixed side plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] When using the equipment, place the large crankshaft to be tested between the two mounting brackets. If the height of the large crankshaft needs to be adjusted to suit the operational requirements, the following adjustments can be made:

[0012] Activate the external switch of the electric telescopic rod to move its telescopic end upwards. This upward movement of the telescopic end drives the movable plates on both sides upwards via a connecting plate, thus raising the height of the placement rack. When the large crankshaft on the placement rack reaches the appropriate height, stop the electric telescopic rod. Then, pass the corresponding positioning rod through the fixed plate and threaded hole to connect it to the movable plate, and tighten the positioning rod to secure it within the movable plate. This fixes the movable plate and fixed plate in their current positions, ensuring the large crankshaft remains at the adjusted height. This structure allows for multi-height detection requirements during use. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 is a schematic diagram of the overall assembly structure provided in the embodiment of this application.

[0015] Figure 2 is a schematic diagram of the structure from below provided in an embodiment of this application.

[0016] Figure 3 is a schematic diagram of the mounting structure of the placement rack provided in an embodiment of this application.

[0017] Figure 4 is a schematic diagram of the positioning rod installation structure provided in an embodiment of this application.

[0018] In the diagram: 1. Base; 2. Fixed side plate; 21. Guide bar; 22. Threaded hole; 3. Electric telescopic rod; 4. Link plate; 5. Movable plate; 51. Fixed plate; 52. Positioning rod; 53. Guide groove; 6. Placement frame; 61. Ball bearing; 7. Mounting frame. Detailed Implementation

[0019] 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.

[0020] Please refer to Figures 1-4. The present invention provides the following technical solution: a support platform for testing large crankshafts, including a base 1. Two fixed side plates 2 are symmetrically welded on the surface of the base 1. A movable plate 5 is movably installed inside each fixed side plate 2. A placement frame 6 is welded on the surface of the movable plate 5. A set of ball bearings 61 is movably embedded in the arc-shaped inner wall at the top of the placement frame 6 for placing large crankshafts. When the two ends of the large crankshaft are placed on the two placement frames 6 respectively and rotated, the large crankshaft can rotate smoothly on the placement frame 6 through the ball bearings 61, thereby completing the testing operation.

[0021] A mounting frame 7 is welded into the cavity of the base 1. An electric telescopic rod 3 is installed on the outer wall of the center end of the mounting frame 7. The fixed end of the electric telescopic rod 3 extends through the table surface of the base 1 to its outside. The telescopic end of the electric telescopic rod 3 is fixedly installed at the bottom of the connecting plate 4. Both ends of the connecting plate 4 are respectively welded to a movable plate 5.

[0022] Preferably, a fixed plate 51 is welded to the outer wall of one side of the movable plate 5, and a positioning rod 52 is threaded through the outer wall of the fixed plate 51 near the bottom. A guide groove 53 is opened on the outer wall of the left and right sides of the movable plate 5, and a guide strip 21 is fixedly installed on the inner wall of the left and right sides of the fixed side plate 2. A threaded hole 22 is opened through the outer wall of one side of the fixed side plate 2.

[0023] The positioning rod 52 is threaded through the fixing plate 51 and threadedly connected to the corresponding threaded hole 22. The positioning rod 52 passes through the threaded hole 22 and passes through the movable plate 5 inside the fixing side plate 2 to connect to the inner wall of the fixing side plate 2.

[0024] In actual use, the positioning rod 52 will pass through the fixed plate 51, the threaded hole 22 and the movable plate 5 in sequence and be threaded to the mating hole on the inner wall of the fixed side plate 2. In this way, the positioning rod 52 can be firmly installed inside the fixed side plate 2 during use.

[0025] Preferably, the guide grooves 53 on both sides of the movable plate 5 are slidably connected to a guide strip 21, and the outer walls on the left and right sides of the movable plate 5 do not contact the inner walls on the left and right sides of the fixed side plate 2.

[0026] In practical use, first, activate the external control switch of the electric telescopic rod 3. When the telescopic end of the electric telescopic rod 3 moves upward, the connecting plate 4 will move upward simultaneously, further driving the movable plates 5 on both sides to rise. As the movable plates 5 rise, the height of the placement rack 6 will also gradually increase. When the crankshaft height reaches the appropriate height, quickly release the control switch of the electric telescopic rod 3.

[0027] Next, the fixing operation is performed: Each movable plate 5 has a through hole at its bottom that matches the positioning rod 52. Based on the current height of the large crankshaft, a suitable threaded hole 22 is selected. The positioning rod 52 is then passed through the fixed plate 51 and the threaded hole 22, engaging with the through hole on the movable plate 5. The positioning rod 52 is made of high-strength alloy steel, and its threaded structure precisely matches the internal thread within the movable plate 5.

[0028] In this way, the movable plate 5 and the fixed plate 51 are firmly locked in their current positions, forming a stable support structure that effectively prevents the crankshaft from shaking or shifting during the testing process, thus allowing the large crankshaft to remain at the adjusted height for an extended period. In practical use, the operation of this structure can meet the diverse crankshaft height requirements of different testing equipment.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A support platform for testing large crankshafts, comprising a base (1), characterized in that, Two fixed side plates (2) are symmetrically welded on the surface of the pedestal (1). A movable plate (5) is movably installed inside each fixed side plate (2). A placement frame (6) is welded on the surface of the movable plate (5) for placing a large crankshaft. A mounting frame (7) is welded in the cavity of the pedestal (1). An electric telescopic rod (3) is installed on the outer wall of the center end of the mounting frame (7). The fixed end of the electric telescopic rod (3) extends through the table surface of the pedestal (1) to its outside. The telescopic end of the electric telescopic rod (3) is fixedly installed at the bottom of the connecting plate (4). The two ends of the connecting plate (4) are respectively welded to a movable plate (5).

2. The support platform for large crankshaft testing according to claim 1, characterized in that: A set of ball bearings (61) is movably fitted into the arc-shaped inner wall at the top of the placement rack (6).

3. The support platform for testing a large crankshaft according to claim 1, characterized in that: A fixing plate (51) is welded to the outer wall of one side of the movable plate (5). A positioning rod (52) is threaded through the outer wall of the fixing plate (51) near the bottom. A guide groove (53) is opened on the outer wall of the left and right sides of the movable plate (5).

4. The support platform for testing a large crankshaft according to claim 1, characterized in that: A guide strip (21) is fixedly installed on the inner walls of the left and right sides of the fixed side plate (2), and a threaded hole (22) is opened through the outer wall of one side of the fixed side plate (2).

5. A support platform for testing a large crankshaft according to claim 3 or 4, characterized in that: The positioning rod (52) is threaded through the fixing plate (51) and threadedly connected to the corresponding threaded hole (22). The positioning rod passes through the threaded hole (22) and passes through the movable plate (5) inside the fixing side plate (2) and is connected to the inner wall of the fixing side plate (2).

6. A support platform for testing large crankshafts according to claim 1, characterized in that: The guide grooves (53) on both sides of the movable plate (5) are slidably connected to a guide strip (21) respectively, and the outer walls on the left and right sides of the movable plate (5) do not contact the inner walls on the left and right sides of the fixed side plate (2).

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