Engine connecting rod detection device

Abstract

The utility model relates to the technical field of engine connecting rod detection, and discloses an engine connecting rod detection device which comprises a base fixedly connected with a group of dial indicators, the dial indicators tightly press a small connecting ring positioning assembly, and the middle part of the small connecting ring positioning assembly tightly presses a small ring part of an engine connecting rod. The large ring end of the engine connecting rod is tightly pressed in the middle of a large connecting ring positioning assembly, a connecting shaft in the large connecting ring positioning assembly is tightly connected with a lower adjusting plate, the large connecting ring positioning assembly comprises a center block, a set of pressing plates are arranged on the two side faces of the center block, the pressing plates are connected with a positioning pipe through connecting rods, and a sliding rod is installed at one end of the positioning pipe. A spring sleeves the outer side of the sliding rod; it is ensured that the connecting rod large ring can be firmly and evenly clamped in the levelness in the positioning process, and the problem that the cost of a positioning jig is increased due to various engine connecting rod models is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine connecting rod detection, in particular to an engine connecting rod detection device. Background Art

[0002] The engine connecting rod consists of three parts: the small connecting rod end, the connecting rod body and the big connecting rod end. It is one of the key parts of the engine and is used to withstand complex stresses, impact vibrations and heavy-load working conditions where the design quality is limited. After the engine connecting rod runs inside the engine, during maintenance, the maintenance personnel generally send the engine connecting rod to a special inspection for engine connecting rod inspection to detect the engine connection distortion and bending to determine whether it can be used normally. During the inspection using the dial indicator, the small connecting rod end and the big connecting rod end in the engine connecting rod need to be fixed. Due to the different engine models, the engine connecting rod models are diverse, and it is necessary to prepare a relatively large number of corresponding positioning fixtures, thereby increasing the cost of the inspection agency to purchase positioning fixtures.

[0003] To this end, we propose an engine connecting rod detection device. Utility Model Content

[0004] The purpose of the present utility model is to provide an engine connecting rod detection device to solve the problem raised in the above background technology that due to different engine models, the engine connecting rod models are diverse, and a relatively increased number of corresponding positioning fixtures need to be prepared, thereby increasing the cost of purchasing positioning fixtures for the detection organization.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an engine connecting rod detection device, comprising a base, the base is fixedly connected to a group of dial indicators, a group of dial indicators tightly press a small chain positioning assembly, the small chain positioning assembly tightly presses the engine connecting rod small ring, the engine connecting rod large ring is provided with a large chain positioning assembly, the two ends of the large chain positioning assembly are tightly rotated and connected to the lowering plate, the large chain positioning assembly includes a center block, both ends of the center block are provided with a connecting shaft, a group of pressure plates are provided on the side of the center block, a group of pressure plates are rotatably connected to one end of the connecting rod on the inner side, and the other end of the connecting rod is rotatably connected to the positioning tube, a sliding rod is provided at one end of the positioning tube, a spring is provided on the outside of the sliding rod, and the spring tightly presses the surface of the pressure plate.

[0006] Preferably, the internal thread of the positioning tube is connected to a connecting shaft, and the connecting shaft is rotatably connected to the central block.

[0007] Preferably, the positioning tube is slidably connected to a set of pressure plates via a sliding rod, and the pressure plates are slidably connected to a central block.

[0008] Preferably, one end of the sliding rod is threadedly connected to the positioning tube, the middle part of the sliding rod is rotatably connected to the extension rod, and one end of the extension rod is tightly pressed against a spring.

[0009] Preferably, the pressing plate is provided with a sliding groove, and the sliding groove is slidably connected to a sliding rod.

[0010] Preferably, the large chain positioning assembly and the small chain positioning assembly have the same structure.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model is fixedly connected to a group of dial indicators through the base, the dial indicators tightly press the small chain positioning assembly, the middle part of the small chain positioning assembly tightly presses the small ring part of the engine connecting rod, and the large ring end of the engine connecting rod tightly presses the middle part of the large chain positioning assembly, and the connecting shaft in the large chain positioning assembly is tightly connected with the lower adjustment plate. The large chain positioning assembly includes a center block, and a group of pressure plates are provided on both sides of the center block. The pressure plates are connected to the positioning tube through a connecting rod. A sliding rod is provided at one end of the positioning tube, and a spring is sleeved on the outside of the sliding rod. The function of the spring is to apply continuous pressing force to the pressure plate to ensure that the large ring of the connecting rod can be firmly and evenly clamped to the horizontality during the positioning process, effectively solving the problem of increased positioning fixture cost caused by the variety of engine connecting rod models. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of the cross-section of the large chain positioning component of the utility model;

[0014] Figure 2 This is a front view of the structure of the large chain positioning assembly of the utility model;

[0015] Figure 3 This is a schematic diagram of the overall front view of the structure of the utility model;

[0016] In the figure: 1. Base; 2. Dial indicator; 3. Small chain positioning assembly; 4. Engine connecting rod; 5. Large chain positioning assembly; 6. Lowering plate; 7. Center block; 8. Connecting shaft; 9. Pressure plate; 10. Connecting rod; 11. Positioning tube; 12. Sliding rod; 13. Spring; 14. Extension rod. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0018] See also Figure 1-Figure 3 The engine connecting rod detection device shown in the figure includes a base 1, the base 1 is fixedly connected to a group of dial indicators 2, the group of dial indicators 2 tightly presses a small chain positioning component 3, the small chain positioning component 3 tightly presses the small ring of the engine connecting rod 4, the large ring of the engine connecting rod 4 is provided with a large chain positioning component 5, the two ends of the large chain positioning component 5 are tightly connected to the lower adjustment plate 6, the large chain positioning component 5 includes a center block 7, both ends of the center block 7 are provided with a connecting shaft 8, the side of the center block 7 is provided with a group of pressure plates 9, the inner side of the group of pressure plates 9 is rotatably connected to one end of the connecting rod 10, and the other end of the connecting rod 10 is rotatably connected to the positioning tube 11, one end of the positioning tube 11 is provided with a sliding rod 12, and the outer side of the sliding rod 12 is provided with a spring 13, and the spring 13 tightly presses the surface of the pressure plate 9. The utility model is fixedly connected to a group of dial indicators through the base, the dial indicators tightly press the small chain positioning assembly, the middle part of the small chain positioning assembly tightly presses the small ring part of the engine connecting rod, and the large ring end of the engine connecting rod tightly presses the middle part of the large chain positioning assembly, and the connecting shaft in the large chain positioning assembly is tightly connected with the lower adjustment plate. The large chain positioning assembly includes a center block, and a group of pressure plates are provided on both sides of the center block. The pressure plates are connected to the positioning tube through a connecting rod. A sliding rod is provided at one end of the positioning tube, and a spring is sleeved on the outside of the sliding rod. The function of the spring is to apply continuous pressing force to the pressure plate to ensure that the large ring of the connecting rod can be firmly and evenly clamped to the horizontality during the positioning process, effectively solving the problem of increased positioning fixture cost caused by the variety of engine connecting rod models.

[0019] Furthermore, the internal thread of the positioning tube 11 is connected to the connecting shaft 8, and the connecting shaft 8 is rotated to connect to the center block 7. The internal thread of the positioning tube is connected to the connecting shaft, so that the positioning tube can be firmly installed in the specified position by threaded connection. At the same time, it can be quickly adjusted according to the size difference of the engine connecting rod, which effectively simplifies the installation, adjustment and maintenance process of the fixture.

[0020] Furthermore, the positioning tube 11 is slidably connected to a group of pressure plates 9 through a sliding rod 12, and the pressure plate 9 is slidably connected to the center block 7. The positioning tube is slidably connected to a group of pressure plates through the sliding rod, so that the pressure plate can slide smoothly under the guidance of the positioning tube, thereby realizing flexible clamping and positioning of the connecting rod large ring, ensuring the accuracy of positioning, and the adjustment range of the fixture, so that it can adapt to connecting rods of different sizes.

[0021] Furthermore, one end of the sliding rod 12 is threadedly connected to the positioning tube 11, and the middle part of the sliding rod 12 is rotatably connected to the extension rod 14. One end of the extension rod 14 is tightly pressed against the spring 13, and is tightly connected to the positioning tube by a threaded connection at one end of the sliding rod, thereby ensuring a firm connection between the sliding rod and the positioning tube, and also enabling the sliding rod to slide stably inside the positioning tube, thereby achieving precise adjustment of the connecting rod positioning position. Secondly, the middle part of the sliding rod is connected to the extension rod by a rotating connection, so that the extension rod can rotate under the drive of the sliding rod, and then adjust the pressure and contact point between the extension rod and the spring, so that the jig can be more easily fine-tuned when adapting to connecting rods of different sizes.

[0022] Furthermore, the pressure plate 9 is provided with a sliding groove, and the sliding rod 12 is slidably connected inside the sliding groove. The sliding groove provided on the pressure plate provides a stable sliding track for the sliding rod, ensuring that the sliding process of the sliding rod on the pressure plate is smooth and accurate, avoiding offset or shaking during the sliding process, thereby improving the overall stability of the positioning fixture. At the same time, when positioning connecting rods of different sizes, the sliding rod can be fine-tuned in the sliding groove to ensure close contact and uniform clamping between the pressure plate and the connecting rod large ring, simplifying the adjustment and use process of the fixture.

[0023] Furthermore, the large chain positioning component 5 and the small chain positioning component 3 have the same structure. The large chain positioning component and the small chain positioning component adopt a consistent structure. The consistent structural design makes the use of the fixture more intuitive and convenient. The operator does not need to learn different component structures and operating methods, and can easily master the use skills of the entire fixture, which reduces the difficulty of operation and improves work efficiency and positioning accuracy.

[0024] In this solution, the engine connecting rod to be tested is first placed on the testing device. The small ring end of the connecting rod is tightly pressed by the small chain positioning assembly to achieve stable positioning. At the same time, the large chain positioning assembly is responsible for positioning the large ring end of the connecting rod, ensuring that the connecting rod remains fixed throughout the testing process.

[0025] The center block plays a key role in the large-scale positioning assembly. It features connecting shafts at both ends, which are threaded into the interior of the positioning tube, ensuring the assembly's stability. Furthermore, the connecting shafts can rotate freely on the center block, providing the necessary flexibility during positioning.

[0026] A sliding rod with a spring sleeve is mounted on one end of the positioning tube. During testing, the rod slides smoothly within a groove in the pressure plate, while the spring applies constant pressure to the pressure plate, ensuring that the connecting rod's large ring is securely and evenly clamped. This design not only improves positioning accuracy but also allows the jig to accommodate connecting rods of varying sizes.

[0027] The large and small link positioning assemblies utilize a consistent structural design. This simplifies fixture manufacturing, assembly, and use, reducing costs while improving component consistency and reliability. It also enhances functional synergy between the fixtures, achieving stable clamping and precise positioning of the connecting rod.

[0028] During the inspection process, a set of dial indicators, tightly pressed against the small connecting link positioning assembly, accurately records and indicates the slightest displacement or deformation of the connecting rod during positioning. The dial indicator readings allow the operator to determine whether the connecting rod meets the specified size and shape requirements.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An engine connecting rod detection device, characterized in that: The invention comprises a base (1), wherein the base (1) is fixedly connected to a group of dial indicators (2), the group of dial indicators (2) is tightly pressed into a small chain positioning assembly (3), the small chain positioning assembly (3) is tightly pressed into a small ring of an engine connecting rod (4), the large ring of the engine connecting rod (4) is provided with a large chain positioning assembly (5), both ends of the large chain positioning assembly (5) are tightly rotatably connected to a lower adjustment plate (6), the large chain positioning assembly (5) comprises a central block (7), both ends of the central block (7) are provided with a connecting shaft (8), a group of pressing plates (9) are provided on the side of the central block (7), the inner side of the group of pressing plates (9) is rotatably connected to one end of a connecting rod (10), the other end of the connecting rod (10) is rotatably connected to a positioning tube (11), one end of the positioning tube (11) is provided with a sliding rod (12), the outer side of the sliding rod (12) is provided with a spring (13), and the spring (13) is tightly pressed into the surface of the pressing plate (9).

2. The engine connecting rod detection device according to claim 1, characterized in that: The positioning tube (11) is internally threadedly connected to the connecting shaft (8), and the connecting shaft (8) is rotatably connected to the central block (7).

3. The engine connecting rod detection device according to claim 2, characterized in that: The positioning tube (11) is slidably connected to a set of pressing plates (9) via a sliding rod (12), and the pressing plates (9) are slidably connected to a central block (7).

4. The engine connecting rod detection device according to claim 1, characterized in that: One end of the sliding rod (12) is threadedly connected to the positioning tube (11), the middle of the sliding rod (12) is rotatably connected to the extension rod (14), and one end of the extension rod (14) is tightly pressed against the spring (13).

5. The engine connecting rod detection device according to claim 1, characterized in that: The pressing plate (9) is provided with a sliding groove, and the interior of the sliding groove is slidably connected to a sliding rod (12).

6. The engine connecting rod detection device according to claim 5, characterized in that: The large chain positioning assembly (5) and the small chain positioning assembly (3) have the same structure.

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