A kind of automobile engine crankshaft connecting rod bending deformation detection equipment
Patent Information
- Application Number
- CN202522503036.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-26
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-11-26
AI Technical Summary
[0002]汽车发动机曲轴连杆弯曲变形检测设备是一种用于在发动机生产、维修或再制造过程中，精确测量连杆是否存在弯曲变形及其变形量的专用工艺装备，它的根本目的是确保连杆的几何精度，从而保证发动机的装配质量、运行平稳性和使用寿命，而现有的曲轴连杆弯曲检测结构在进行检测时，大多数都是只能针对固定尺寸的连杆进行检测，当需要检测不同尺寸的连杆时，较为麻烦
[0011]1、本实用新型通过在滑槽一内部滑动连接有滑块一，在滑块一的上方固定安装有连接杆，在连接杆的内部开设有滑槽二，在滑槽二的内部滑动连接有滑块二，且在滑块二的后方固定安装有连接块，在连接块的后方固定安装有压杆，且压杆位于连杆的内部与连杆进行贴合，当需要对连杆进行检测时，首先将连杆的大头朝下，使连杆底部的两侧与定位架进行贴合，这时启动电机带动丝杠进行转动，使丝杠与连接块进行啮合，使连接块通过滑块二与滑槽二的滑动连接作用时压杆被带动往下进行挤压，从而使连杆被固定在定位架的内部，使连杆具有保持稳定的效果，同时由于定位架为V字状，当连杆放在定位架的上方后，可对用不同尺寸的连杆，从而实现对不同尺寸的连杆进行检测的效果。
Smart Images
Figure CN224787924U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crankshaft connecting rod testing technology, and more specifically, to a device for detecting bending deformation of automobile engine crankshaft connecting rods. Background Technology
[0002] The crankshaft connecting rod bending deformation detection equipment for automobile engines is a specialized process equipment used to accurately measure whether the connecting rod has bending deformation and the amount of deformation during engine production, repair, or remanufacturing. Its fundamental purpose is to ensure the geometric accuracy of the connecting rod, thereby ensuring the assembly quality, smooth operation, and service life of the engine. However, most existing crankshaft connecting rod bending detection structures can only be used to detect connecting rods of fixed dimensions, which is quite troublesome when it is necessary to detect connecting rods of different sizes. Utility Model Content
[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a device for detecting the bending deformation of connecting rods of automobile engine crankshafts, which has the advantage of being able to detect connecting rods of different sizes.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a testing device for bending deformation of a crankshaft connecting rod in an automobile engine, comprising a testing platform, a positioning frame fixedly installed above the testing platform, a limiting block fixedly installed inside the positioning frame, a connecting rod provided above the limiting block, a piston inserted inside the limiting block, a first sliding groove provided inside the testing platform, a first slider slidably connected inside the first sliding groove, a connecting rod fixedly installed above the first slider, a second sliding groove provided inside the connecting rod, a second slider slidably connected inside the second sliding groove, a connecting block fixedly installed behind the second slider, and a pressure rod fixedly installed behind the connecting block, the pressure rod being located inside the connecting rod and fitting against the connecting rod.
[0005] As a preferred embodiment of this utility model, a fixing plate is fixedly installed at the rear of the connecting rod, a motor is fixedly installed at the bottom of the fixing plate, a lead screw is fixedly installed at the output end of the motor, and the lead screw meshes with the connecting block.
[0006] As a preferred technical solution of this utility model, a support frame is fixedly installed above the testing platform, a sliding groove three is opened inside the support frame, a slider three is slidably connected inside the sliding groove three, a balance plate is fixedly installed on the outside of the slider three, and a dial indicator is fixedly installed above the balance plate.
[0007] As a preferred embodiment of this utility model, a cylinder is fixedly installed above the support frame, and an output shaft is fixedly installed at the bottom of the cylinder. The output shaft is located above the balance plate and is fixedly connected to the balance plate.
[0008] As a preferred embodiment of this utility model, there are two dial gauges, which are arranged one in front of the other.
[0009] As a preferred embodiment of this utility model, there are two limiting blocks, which are located inside the positioning frame and both of them are in contact with the connecting rod.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] 1. This utility model features a slider slidably connected inside a sliding groove, a connecting rod fixedly installed above the slider, a second sliding groove inside the connecting rod, a second slider slidably connected inside the second sliding groove, a connecting block fixedly installed behind the second slider, and a pressure rod fixedly installed behind the connecting block. The pressure rod is located inside the connecting rod and fits against it. When the connecting rod needs to be tested, the larger end of the connecting rod is first placed downwards, so that the two sides of the bottom of the connecting rod fit against the positioning frame. At this time, the motor is started to drive the lead screw to rotate, so that the lead screw meshes with the connecting block. When the connecting block is slidably connected to the second sliding groove, the pressure rod is driven downwards and squeezed, thereby fixing the connecting rod inside the positioning frame, so that the connecting rod has a stable effect. At the same time, since the positioning frame is V-shaped, when the connecting rod is placed on top of the positioning frame, connecting rods of different sizes can be used, thereby achieving the effect of testing connecting rods of different sizes.
[0012] 2. This utility model features a sliding groove three inside the support frame, a slider three slidably connected inside the sliding groove three, a balance plate fixedly installed on the outside of the slider three, and a dial indicator fixedly installed above the balance plate. When it is necessary to test the connecting rod, the piston is first inserted into the connecting rod. At this time, the sliding connection between the slider three and the sliding groove three causes the balance plate to move downward, so that the bottom of the dial indicator contacts the piston. Since there are two dial indicators, each corresponding to the front and rear ends of the piston, the angles at the front and rear ends of the piston are measured and compared to determine whether the connecting rod is bent. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A;
[0015] Figure 3 This utility model Figure 1 Enlarged schematic diagram of the structure at point B;
[0016] Figure 4 This is a schematic diagram of the positioning frame structure of this utility model;
[0017] Figure 5 This utility model Figure 4 Point C is designed to be enlarged.
[0018] In the diagram: 1. Testing table; 2. Positioning frame; 3. Limiting block; 4. Connecting rod; 5. Piston; 6. Slide groove one; 7. Slider one; 8. Connecting rod; 9. Slide groove two; 10. Slider two; 11. Connecting block; 12. Pressure rod; 13. Fixing plate; 14. Motor; 15. Lead screw; 16. Support frame; 17. Slide groove three; 18. Slider three; 19. Balance plate; 20. Dial indicator; 21. Cylinder; 22. Output shaft. 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] like Figures 1 to 5 As shown, this utility model provides a device for detecting the bending deformation of a crankshaft connecting rod in an automobile engine. It includes a testing platform 1, a positioning frame 2 fixedly installed above the testing platform 1, a limiting block 3 fixedly installed inside the positioning frame 2, a connecting rod 4 above the limiting block 3, and a piston 5 inserted inside the connecting rod 4. A first groove 6 is opened inside the testing platform 1, a first slider 7 is slidably connected inside the first groove 6, a connecting rod 8 is fixedly installed above the first slider 7, a second groove 9 is opened inside the connecting rod 8, a second slider 10 is slidably connected inside the second groove 9, a connecting block 11 is fixedly installed behind the second slider 10, and a pressure rod 12 is fixedly installed behind the connecting block 11. The pressure rod 12 is located inside the connecting rod 4 and fits against the connecting rod 4.
[0021] When it is necessary to inspect the connecting rod 4, first place the large end of the connecting rod 4 downwards, so that the two sides of the bottom of the connecting rod 4 are in contact with the positioning frame 2. At this time, start the motor 14 to drive the lead screw 15 to rotate, so that the lead screw 15 meshes with the connecting block 11. When the connecting block 11 is connected by the sliding block 10 and the sliding groove 9, the pressure rod 12 is driven to press downwards, thereby fixing the connecting rod 4 inside the positioning frame 2, so that the connecting rod 4 has a stable effect. At the same time, since the positioning frame 2 is V-shaped, when the connecting rod 4 is placed on the top of the positioning frame 2, connecting rods 4 of different sizes can be used, thereby achieving the effect of inspecting connecting rods 4 of different sizes.
[0022] A fixing plate 13 is fixedly installed behind the connecting rod 8, a motor 14 is fixedly installed at the bottom of the fixing plate 13, and a lead screw 15 is fixedly installed at the output end of the motor 14. The lead screw 15 meshes with the connecting block 11.
[0023] When the motor 14 is started, it drives the lead screw 15 to rotate. At this time, the lead screw 15 will mesh with the connecting block 11, causing the connecting block 11 to move up and down, thereby achieving the effect of fixing and disassembling the connecting rod 4.
[0024] Among them, a support frame 16 is fixedly installed on the top of the testing table 1. A sliding groove 17 is opened inside the support frame 16. A slider 18 is slidably connected inside the sliding groove 17. A balance plate 19 is fixedly installed on the outside of the slider 18. A dial indicator 20 is fixedly installed on the top of the balance plate 19.
[0025] When it is necessary to test the connecting rod 4, the piston 5 is first inserted into the interior of the connecting rod 4. At this time, the sliding connection between the slider 3 18 and the slide groove 3 17 causes the balance plate 19 to move downward, so that the bottom of the dial indicator 20 contacts the piston 5. Since there are two dial indicators 20, the two dial indicators 20 correspond to the front and rear ends of the piston 5 respectively. By measuring the angles of the front and rear ends of the piston 5 and comparing them, it can be determined whether the connecting rod 4 is bent.
[0026] Among them, a cylinder 21 is fixedly installed on the upper part of the support frame 16, and an output shaft 22 is fixedly installed on the bottom of the cylinder 21. The output shaft 22 is located above the balance plate 19 and is fixedly connected to the balance plate 19.
[0027] The starting cylinder 21 drives the balance plate 19 to move through the sliding connection between the slider 3 18 and the slide groove 3 17 via the fixed connection between the output shaft 22 and the balance plate 19, thereby achieving the effect of adjusting the height of the dial indicator 20 at any time.
[0028] There are two dial gauges 20, which are arranged one after the other.
[0029] Both dial indicators 20 are located above the connecting rod 4. By analyzing the angles at both ends of the piston 5 and comparing them, the overall detection efficiency and accuracy can be improved.
[0030] There are two limit blocks 3, which are located inside the positioning frame 2 and both limit blocks 3 are in contact with the connecting rod 4.
[0031] The main function of the two limiting blocks 3 is to limit the connecting rod 4, so that the bottom of the connecting rod 4 remains horizontal. When the connecting rod 4 is squeezed and fixed by the pressure rod 12, it can keep the connecting rod 4 in a vertical state, thereby improving the overall detection accuracy.
[0032] Working principle and usage process of this utility model:
[0033] First, a slider 7 is slidably connected inside the slide groove 6. A connecting rod 8 is fixedly installed above the slider 7. A slide groove 9 is opened inside the connecting rod 8. A slider 10 is slidably connected inside the slide groove 9. A connecting block 11 is fixedly installed behind the slider 10. A pressure rod 12 is fixedly installed behind the connecting block 11. The pressure rod 12 is located inside the connecting rod 4 and fits against the connecting rod 4. When the connecting rod 4 needs to be tested, the large end of the connecting rod 4 is first turned down so that the two sides of the bottom of the connecting rod 4 fit against the positioning frame 2. At this time, the motor 14 is started to drive the lead screw 15 to rotate, so that the lead screw 15 meshes with the connecting block 11. When the connecting block 11 is connected to the slide groove 9 through the slider 10, the pressure rod 12 is driven to press down, so that the connecting rod 4 is fixed inside the positioning frame 2, so that the connecting rod 4 has a stable effect.
[0034] Meanwhile, since the positioning frame 2 is V-shaped, when the connecting rod 4 is placed above the positioning frame 2, connecting rods 4 of different sizes can be used to achieve the effect of detecting connecting rods 4 of different sizes.
[0035] Finally, a sliding groove 17 is provided inside the support frame 16, and a slider 18 is slidably connected inside the sliding groove 17. A balance plate 19 is fixedly installed on the outside of the slider 18, and a dial indicator 20 is fixedly installed above the balance plate 19. When it is necessary to test the connecting rod 4, the piston 5 is first inserted into the connecting rod 4. At this time, the sliding connection between the slider 18 and the sliding groove 17 causes the balance plate 19 to move downward, so that the bottom of the dial indicator 20 contacts the piston 5. Since there are two dial indicators 20, the two dial indicators 20 correspond to the front and rear ends of the piston 5 respectively. By measuring the angles of the front and rear ends of the piston 5 and comparing them, it can be determined whether the connecting rod 4 is bent.
[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0037] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for detecting bending deformation of crankshaft connecting rod in automobile engines, comprising a testing table (1), characterized in that: A positioning frame (2) is fixedly installed above the testing platform (1). A limiting block (3) is fixedly installed inside the positioning frame (2). A connecting rod (4) is provided above the limiting block (3). A piston (5) is inserted inside the connecting rod (4). A sliding groove (6) is opened inside the testing platform (1). A slider (7) is slidably connected inside the sliding groove (6). A connecting rod (8) is fixedly installed above the slider (7). A sliding groove (9) is opened inside the connecting rod (8). A slider (10) is slidably connected inside the sliding groove (9). A connecting block (11) is fixedly installed behind the slider (10). A pressure rod (12) is fixedly installed behind the connecting block (11). The pressure rod (12) is located inside the connecting rod (4) and fits against the connecting rod (4).
2. The automobile engine crankshaft connecting rod bending deformation detection device according to claim 1, characterized in that: A fixing plate (13) is fixedly installed behind the connecting rod (8), and a motor (14) is fixedly installed at the bottom of the fixing plate (13). A lead screw (15) is fixedly installed at the output end of the motor (14), and the lead screw (15) meshes with the connecting block (11).
3. The automobile engine crankshaft connecting rod bending deformation detection device according to claim 1, characterized in that: A support frame (16) is fixedly installed above the testing platform (1). A sliding groove (17) is provided inside the support frame (16). A slider (18) is slidably connected inside the sliding groove (17). A balance plate (19) is fixedly installed on the outside of the slider (18). A dial indicator (20) is fixedly installed above the balance plate (19).
4. The automobile engine crankshaft connecting rod bending deformation detection device according to claim 3, characterized in that: A cylinder (21) is fixedly installed above the support frame (16), and an output shaft (22) is fixedly installed at the bottom of the cylinder (21). The output shaft (22) is located above the balance plate (19) and is fixedly connected to the balance plate (19).
5. The automobile engine crankshaft connecting rod bending deformation detection device according to claim 3, characterized in that: There are two dial gauges (20), which are arranged one in front of the other.
6. The automobile engine crankshaft connecting rod bending deformation detection device according to claim 1, characterized in that: There are two limiting blocks (3), which are located inside the positioning frame (2) and both limiting blocks (3) are in contact with the connecting rod (4).