Internal combustion engine component strength testing equipment

Abstract

The present invention relates to the field of internal combustion engine detection technology, specifically to an internal combustion engine component strength detection device, comprising a vertical frame rod connected to the bottom of the frame plate, the vertical frame rod slidingly contacts an arc frame through a slide groove, and a bolt member is arranged inside the vertical frame rod. The present invention provides two detection modes, a tensile strength detection of a connecting rod member and a connecting rod cover as a whole, and a tensile strength detection of a bolt connection between a connecting rod member and a connecting rod cover. Through simple structural adjustment and component replacement, the detection mode can be quickly switched to meet different detection requirements, greatly improving the flexibility and efficiency of the detection.

Description

Technical Field

[0001] The invention relates to the technical field of internal combustion engine detection, in particular to a strength detection device for internal combustion engine components. Background Art

[0002] An internal combustion engine is a power machine that burns fuel inside the machine to generate heat, and then directly converts the potential energy released by the heat into kinetic energy. This energy conversion is inseparable from the precision manufacturing of the internal combustion engine, so it is generally necessary to inspect each component of the internal combustion engine.

[0003] In an internal combustion engine, the connecting rod is used to connect the crankshaft and the piston, converting the reciprocating motion of the piston into the rotational motion of the crankshaft. In order to ensure the strength and reliability of the connecting rod under high load and high-speed operating conditions, it is necessary to use a tensile testing machine to perform tensile strength testing on it. This test includes not only the tensile strength of the connecting rod as a whole, but also the tensile strength of the bolt connection between the connecting rod and the connecting rod cover, to ensure its stable performance in harsh working environments.

[0004] However, the tensile strength testing equipment in the prior art has some limitations, especially the inability to quickly switch the operating mode when testing different parts. When it is necessary to switch between the tensile strength test of the connecting rod as a whole and the tensile strength test of the bolt connection between the connecting rod and the connecting rod cover, the operator may need to manually disassemble and reinstall different clamps and clamps during the adjustment process, including loosening the fixing bolts, removing the clamps, selecting suitable clamps or clamps, repositioning the clamps and tightening the bolts, etc., which is relatively complicated and time-consuming. In addition, since the exterior of the connecting rod is usually designed with an arc surface, traditional clamps can hardly provide sufficient friction and stability. This design defect can easily cause the connecting rod to slip, loosen or displace during high-load tensile tests, thereby affecting the accuracy and reliability of the test results. The testing equipment cannot firmly fix the connecting rod, which may cause measurement errors and cannot truly reflect the strength and durability of the connecting rod under actual working conditions. Summary of the invention

[0005] In order to overcome the above technical problems, the purpose of the present invention is to provide an internal combustion engine component strength detection device to solve the problem of being unable to quickly switch operating modes when detecting different parts of a connecting rod as mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an internal combustion engine component strength testing device, comprising a main component group, the main component group comprises a test machine frame, an upper movable frame and a lower fixed frame are installed on the test machine frame, a connecting rod member and a connecting rod cover are arranged between the upper movable frame and the lower fixed frame, the connecting rod member and the connecting rod cover are connected by bolts, a piston pin hole is opened on the connecting rod member, and a connecting rod hole is opened on the connecting rod member and the connecting rod cover, an upper frame component group is installed at the bottom of the upper movable frame, the upper frame component group comprises a frame plate, a vertical frame rod is connected to the bottom of the frame plate, the vertical frame rod is in sliding contact with an arc frame through a sliding groove, a bolt member 1 is arranged in the vertical frame rod, and two side plates are arranged on both sides of the arc frame; a pin hole connecting component group is arranged inside the upper frame component group, and the pin hole connecting component group comprises A frame plate component, a regulating button 1 is provided on the side of the frame plate component, and a driving gear 1 is connected to the side of the regulating button 1, the driving gear 1 is meshed with a transmission gear 1, the transmission gear 1 is connected to a transverse axis 1, the transverse axis 1 is connected to a cam 1 through a through hole, and a limiting block 1 is provided on the side of the transmission gear 1; a rod hole connecting component group is installed on the lower fixed frame, and the rod hole connecting component group includes an upper connecting component, a lower connecting component, a bolt component 2, a side inner plate and a lower bracket, and the upper connecting component includes a frame plate component 2, a regulating button 2 is provided on the side of the frame plate component 2, and a driving gear 2 is connected to the side of the regulating button 2, the driving gear 2 is meshed with a transmission gear 2, the transmission gear 2 is connected to a transverse axis 2, the transverse axis 2 is connected to a cam 2 through a through hole, and a limiting block 2 is provided on the side of the transmission gear 2.

[0007] Preferably: there are four vertical frame rods, and the four vertical frame rods are connected to the four corners of the frame plate, the vertical frame rods are provided with multiple holes at positions corresponding to the bolt member 1, and the vertical frame rods are in contact with the bolt member 1 through the holes, the arc frame is connected to the bolt member 1 through threads, the arc frame is provided with through grooves at positions corresponding to the frame plate member 1 and the connecting rod member, and the connecting rod member can pass through the arc frame through the through grooves, and the side plates are fixedly connected to the arc frame.

[0008] Preferably: the frame plate member 1 is in contact with the side plate piece, and the frame plate member 1 and the side plate piece can be connected by bolts, the driving gear 1 is connected to the frame plate member 1 through a rotating shaft, the transmission gear 1, the transverse axis 1 and the cam 1 are all provided in three, and the three transmission gears 1, the transverse axis 1 and the cam 1 are annularly distributed on the axial line of the piston pin hole, the cam 1 is in contact with the piston pin hole, the three transmission gears 1 are meshed with each other, the frame plate member 1 is provided with a through groove corresponding to the connecting rod member, and the connecting rod member can pass through the frame plate member 1 through the through groove, the transverse axis 1 is connected to the frame plate member 1 through a bearing, the three cams 1 are staggeredly distributed, and the limit block 1 is in contact with the transmission gear 1 through a toothed structure.

[0009] Preferably: the structures of the upper connecting component and the lower connecting component are the same, and the upper connecting component and the lower connecting component are symmetrically distributed on the upper and lower sides of the connecting rod hole, the frame plate part 2 is provided with a through groove corresponding to the connecting rod part and the connecting rod cover, and the connecting rod part and the connecting rod cover are located in the through groove of the frame plate part 2.

[0010] Preferably, the upper connecting assembly and the lower connecting assembly are connected via bolt member 2, the side inner plate is connected to frame member 2 of the upper connecting assembly, and the driving gear 2 is connected to frame member 2 via a rotating shaft.

[0011] Preferably, three transmission gears 2, transverse shafts 2 and cams 2 are provided, and the three transmission gears 2, transverse shafts 2 and cams 2 are distributed inside the connecting rod hole.

[0012] Preferably: the second cam is fixedly connected to the second transverse axis through a hole, the second cam is in contact with the connecting rod hole, the second transverse axis is connected to the second frame plate through a bearing, and the three second cams are staggered.

[0013] Preferably: the side inner plate can be connected to the side plate by bolts, the lower bracket is connected to the bottom of the lower connecting assembly, the lower bracket is connected to the lower fixed frame, and the limit block 2 is in contact with the transmission gear 2 through a tooth structure.

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

[0015] 1. The present invention provides two detection modes, namely, the tensile strength detection of the connecting rod and the connecting rod cover as a whole, and the tensile strength detection of the bolt connection between the connecting rod and the connecting rod cover. Through simple structural adjustment and component replacement, the detection mode can be quickly switched to meet different detection requirements, which greatly improves the flexibility and efficiency of the detection;

[0016] 2. The pin hole connecting component group and the rod hole connecting component group designed by the present invention are both adjustable. The rotation of the internal driving gear and the transmission gear can be controlled by adjusting the button, thereby changing the position and angle of the cam, so that it can adapt to piston pin holes and connecting rod holes of different specifications. This design allows the equipment to detect connecting rod assemblies of different specifications without changing the fixture, thereby improving the efficiency of the detection and the versatility of the equipment;

[0017] 3. In the prior art, the connecting rod is clamped directly by a clamping member, and the outer surface of the connecting rod is designed as an arc surface, and the clamping stability is insufficient. The present device directly contacts from the inside in 16 and 17, and locks the connecting rod more firmly, preventing loosening and displacement during detection, thereby ensuring the reliability of the detection process, and being able to more safely withstand high-load tensile tests, reducing safety hazards during the test process, and ensuring the safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall structure of the connecting rod member and the connecting rod cover of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the upper frame component group, the pin hole connecting component group and the rod hole connecting component group of the present invention;

[0021] Figure 4 It is a schematic diagram of the back structure of the upper frame component group, the pin hole connecting component group and the rod hole connecting component group of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the upper frame component group and the pin hole connecting component group of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the pin hole connection component group and the connecting rod part of the present invention;

[0024] Figure 7 It is a cross-sectional structural schematic diagram of the pin hole connection component group and the connecting rod part of the present invention;

[0025] Figure 8 It is a structural schematic diagram of the rod hole connecting component group, the connecting rod member and the connecting rod cover part of the present invention;

[0026] Fig. 9 It is a schematic structural diagram of the upper connecting component and the lower connecting component of the present invention;

[0027] Fig.10 It is a structural schematic diagram of the second horizontal axis and the second cam of the present invention;

[0028] Fig.11 It is a cross-sectional structural schematic diagram of the rod hole connecting component assembly of the present invention;

[0029] Fig.12 It is a structural schematic diagram of the upper rack component group and the upper connecting assembly of the present invention when they are connected;

[0030] Fig.13 It is a schematic diagram of the structure of the two parts of the limit block of the present invention;

[0031] Fig.14 It is a structural schematic diagram of a part of the limit block of the present invention.

[0032] In the figure: 01, main body component group; 11, test machine frame; 12, upper moving frame; 13, lower fixed frame; 14, connecting rod; 15, connecting rod cover; 16, piston pin hole; 17, connecting rod hole; 02, upper frame component group; 21, frame plate; 22, vertical frame rod; 23, arc frame; 24, bolt part 1; 25, side plate; 03, pin hole connecting component group; 31, frame plate part 1; 32, adjusting button 1; 33, driving gear 1; 34. Transmission gear one; 35. Horizontal axis one; 36. Cam one; 37. Limit block one; 04. Rod hole connection component group; 41. Upper connection component; 411. Frame plate two; 412. Adjustment button two; 413. Drive gear two; 414. Transmission gear two; 415. Horizontal axis two; 416. Cam two; 417. Limit block two; 42. Lower connection component; 43. Bolt component two; 44. Side inner plate; 45. Lower bracket. DETAILED DESCRIPTION

[0033] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-14The present invention provides an embodiment: an internal combustion engine component strength testing device, including a main component group 01, the main component group 01 includes a test machine frame 11, an upper movable frame 12 and a lower fixed frame 13 are installed on the test machine frame 11, a connecting rod 14 and a connecting rod cover 15 are arranged between the upper movable frame 12 and the lower fixed frame 13, the connecting rod 14 and the connecting rod cover 15 are connected by bolts, a piston pin hole 16 is opened on the connecting rod 14, and a connecting rod 14 and the connecting rod cover 15 are opened Rod hole 17, the bottom of the upper movable frame 12 is installed with an upper frame component group 02, the upper frame component group 02 includes a frame plate 21, the bottom of the frame plate 21 is connected with a vertical frame rod 22, the vertical frame rod 22 is in sliding contact with an arc frame 23 through a slide groove, a bolt member 24 is arranged in the vertical frame rod 22, and two side plates 25 are arranged on both sides of the arc frame 23; the interior of the upper frame component group 02 is provided with a pin hole connection component group 03, the pin hole connection component group 03 includes a frame plate member 31, a frame plate member 32, a frame plate member 33, and a frame plate member 34. 1 is provided with an adjusting button 32 on the side, the adjusting button 32 is connected with a driving gear 33 on the side, the driving gear 33 is meshed with a transmission gear 34, the transmission gear 34 is connected with a horizontal shaft 35, the horizontal shaft 35 is connected with a cam 36 through a through hole, and a limit block 37 is provided on the side of the transmission gear 34; a rod hole connecting component group 04 is installed on the lower fixed frame 13, and the rod hole connecting component group 04 includes an upper connecting component 41, a lower connecting component 42, and a bolt member 2 43. The side inner plate 44 and the lower bracket 45. The upper connecting component 41 includes a frame plate 411. The side of the frame plate 411 is provided with an adjusting button 412. The side of the adjusting button 412 is connected with a driving gear 413. The driving gear 413 is meshed with a transmission gear 414. The transmission gear 414 is connected with a horizontal axis 415. The horizontal axis 415 is connected with a cam 416 through a through hole. The side of the transmission gear 414 is provided with a limiting block 417.

[0035] There are four vertical frame rods 22, and the four vertical frame rods 22 are connected to the four corners of the frame plate 21. The vertical frame rods 22 are provided with multiple holes at the positions corresponding to the bolt members 24, and the vertical frame rods 22 are in contact with the bolt members 24 through the holes. The arc frame 23 is connected to the bolt members 24 through threads. The arc frame 23 is provided with through grooves at the positions corresponding to the frame plate members 31 and the connecting rod members 14, and the connecting rod members 14 can pass through the arc frame 23 through the through grooves, and the side plates 25 are fixedly connected to the arc frame 23.

[0036] The frame plate 31 is in contact with the side plate 25, and the frame plate 31 and the side plate 25 can be connected by bolts, the driving gear 33 is connected to the frame plate 31 through a rotating shaft, three transmission gears 34, transverse shafts 35 and cams 36 are provided, and the three transmission gears 34, transverse shafts 35 and cams 36 are annularly distributed on the axis line of the piston pin hole 16, the cam 36 is in contact with the piston pin hole 16, and the three transmission gears 34 are meshed with each other, the frame plate 31 is provided with a through groove corresponding to the connecting rod 14, and the connecting rod 14 can pass through the frame plate 31 through the through groove, the transverse shaft 35 is connected to the frame plate 31 through a bearing, the three cams 36 are staggered, and the limit block 37 is in contact with the transmission gear 34 through a toothed structure.

[0037] The structures of the upper connecting component 41 and the lower connecting component 42 are the same, and the upper connecting component 41 and the lower connecting component 42 are symmetrically distributed on the upper and lower sides of the connecting rod hole 17. The frame plate 411 is provided with a through groove corresponding to the connecting rod member 14 and the connecting rod cover 15, and the connecting rod member 14 and the connecting rod cover 15 are located in the through groove of the frame plate 411.

[0038] The upper connecting assembly 41 and the lower connecting assembly 42 are connected by a second bolt member 43 , the side inner plate 44 is connected to a second frame plate member 411 of the upper connecting assembly 41 , and the second driving gear 413 is connected to the second frame plate member 411 via a rotating shaft.

[0039] There are three transmission gears 414 , two transverse shafts 415 and two cams 416 , and the three transmission gears 414 , two transverse shafts 415 and two cams 416 are distributed inside the connecting rod hole 17 .

[0040] The second cam 416 is fixedly connected to the second transverse shaft 415 through a hole. The second cam 416 contacts the connecting rod hole 17. The second transverse shaft 415 is connected to the second frame plate 411 through a bearing. The three second cams 416 are staggered.

[0041] The side inner plate 44 can be connected to the side plate 25 by bolts, the lower bracket 45 is connected to the bottom of the lower connecting assembly 42, the lower bracket 45 is connected to the lower fixed frame 13, and the limit block 417 is in contact with the transmission gear 414 through a tooth structure.

[0042] Working principle: When using this device to test the tensile strength of the connecting rod assembly, you can choose to test the tensile strength between the connecting rod 14 and the connecting rod cover 15, or the tensile strength of the connecting rod 14 and the connecting rod cover 15 as a whole. When choosing to test the tensile strength of the connecting rod 14 and the connecting rod cover 15 as a whole, the state of the overall device is as follows: Figures 1 to 11As shown, the vertical frame rod 22 in the upper frame component group 02 is connected to the arc frame 23 through the bolt member 24, and the side plate 25 is connected to the frame plate member 31 through the bolt. The cam 36 inside the frame plate member 31 contacts the piston pin hole 16. By turning the adjusting button 32, the adjusting button 32 will drive the driving gear 33, the transmission gear 34 and the horizontal shaft 35 to rotate, and then drive the cam 36 to rotate. The axis lines of the cam 36 and the horizontal shaft 35 are different. By controlling the rotation angle of the cam 36, the cam 36 can adapt to the piston pin holes 16 of different apertures, so that it can contact the piston pin hole 16 from the inside. After the wheel 136 is adjusted and adapted according to the aperture of the piston pin hole 16, the function of limiting and fixing one end of the connecting rod 14 is achieved. The upper connecting assembly 41 and the lower connecting assembly 42 in the rod hole connecting component group 04 can control the rotation angle of the cam 2 416 in the connecting rod hole 17 by rotating and adjusting the adjusting button 2 412, so as to achieve the adjustment and adaptation of connecting rod holes 17 with different apertures, and then play the role of limiting and fixing one end of the connecting rod 14 and the connecting rod cover 15 as a whole. At this time, by controlling the upper moving frame 12 to move upward and the lower fixed frame 13 to remain stationary, the overall tensile strength of the connecting rod 14 and the connecting rod cover 15 can be tested;

[0043] When the tensile strength test of the connection between the connecting rod 14 and the connecting rod cover 15 is required, the bolt 24 is first removed from the arc frame 23 and the vertical frame rod 22, and then the pin hole connecting component group 03 is removed from the connecting rod 14. After removal, the arc frame 23 is controlled to move downward, so that the side plates 25 connected on both sides of the arc frame 23 are connected to the side inner plates 44 on both sides of the upper connecting assembly 41 through bolts. Fig.12 As shown, after the upper frame component group 02 and the upper connecting component 41 are connected, the bolt component 43 connecting the upper connecting component 41 and the lower connecting component 42 is removed. At this time, the upper movable frame 12 is controlled to move upward while the lower fixed frame 13 remains stationary, and the tensile strength of the connection between the connecting rod member 14 and the connecting rod cover 15 can be tested.

[0044] After the cam 2 416 is adjusted to adapt to the aperture of the connecting rod hole 17, the limit block 2 417 is inserted between the transmission gear 2 414. The limit block 2 417 will contact the transmission gear 2 414 through the tooth structure, thereby locking the positions of multiple transmission gears 2 414 to prevent the transmission gear 2 414 from rotating, thereby locking the cam 2 416. After the cam 1 36 is adjusted to adapt to the aperture of the piston pin hole 16, the limit block 1 37 is inserted between the three transmission gears 1 34 to lock the position of the transmission gear 1 34, thereby locking the position of the cam 1 36.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An internal combustion engine component strength testing device, comprising a main component group (01), the main component group (01) comprising a test machine frame (11), an upper movable frame (12) and a lower fixed frame (13) being mounted on the test machine frame (11), a connecting rod (14) and a connecting rod cover (15) being arranged between the upper movable frame (12) and the lower fixed frame (13), the connecting rod (14) and the connecting rod cover (15) being connected by bolts, a piston pin hole (16) being provided on the connecting rod (14), and a connecting rod hole (17) being provided on the connecting rod (14) and the connecting rod cover (15), characterized in that: An upper frame component group (02) is installed at the bottom of the upper movable frame (12), and the upper frame component group (02) includes a frame plate (21), and a vertical frame rod (22) is connected to the bottom of the frame plate (21), and the vertical frame rod (22) is in sliding contact with an arc frame (23) through a sliding groove, and a bolt member (24) is arranged in the vertical frame rod (22), and two side plates (25) are arranged on both sides of the arc frame (23); A pin hole connection component group (03) is arranged inside the upper frame component group (02), and the pin hole connection component group (03) includes a frame plate member 1 (31), and an adjusting button 1 (32) is arranged on the side of the frame plate member 1 (31), and a driving gear 1 (33) is connected to the side of the adjusting button 1 (32), and the driving gear 1 (33) is meshed with a transmission gear 1 (34), and the transmission gear 1 (34) is connected to a transverse axis 1 (35), and the transverse axis 1 (35) is connected to a cam 1 (36) through a through hole, and a limit block 1 (37) is arranged on the side of the transmission gear 1 (34); A rod hole connecting component group (04) is installed on the lower fixed frame (13), and the rod hole connecting component group (04) includes an upper connecting component (41), a lower connecting component (42), a second bolt component (43), a side inner plate (44) and a lower bracket (45). The upper connecting component (41) includes a second frame plate component (411), and a second adjusting button (412) is arranged on the side of the second frame plate component (411). The side of the second adjusting button (412) is connected to a second driving gear (413), and the second driving gear (413) is meshed with a second transmission gear (414). The second transmission gear (414) is connected to a second transverse axis (415), and the second transverse axis (415) is connected to a second cam (416) through a through hole. A second limiting block (417) is arranged on the side of the second transmission gear (414).

2. The internal combustion engine component strength testing device according to claim 1, characterized in that: There are four vertical frame rods (22), and the four vertical frame rods (22) are connected to the four corners of the frame plate (21); the vertical frame rods (22) are provided with a plurality of holes at positions corresponding to the bolt member 1 (24), and the vertical frame rods (22) are in contact with the bolt member 1 (24) through the holes; the arc frame (23) is connected to the bolt member 1 (24) through threads; the arc frame (23) is provided with through grooves at positions corresponding to the frame plate member 1 (31) and the connecting rod member (14), and the connecting rod member (14) can pass through the arc frame (23) through the through grooves; and the side plate (25) is fixedly connected to the arc frame (23).

3. The internal combustion engine component strength testing device according to claim 1, characterized in that: The frame plate member 1 (31) is in contact with the side plate (25), and the frame plate member 1 (31) and the side plate (25) can be connected by bolts. The driving gear 1 (33) is connected to the frame plate member 1 (31) via a rotating shaft. The transmission gear 1 (34), the horizontal shaft 1 (35) and the cam 1 (36) are provided in three numbers, and the three transmission gears 1 (34), the horizontal shaft 1 (35) and the cam 1 (36) are distributed in an annular manner on the axis of the piston pin hole (16). The cam 1 (36) contacts the piston pin hole (16), the three transmission gears 1 (34) mesh with each other, the frame plate 1 (31) is provided with a through slot corresponding to the connecting rod (14), and the connecting rod (14) can pass through the frame plate 1 (31) through the through slot, the transverse axis 1 (35) is connected to the frame plate 1 (31) through a bearing, the three cams 1 (36) are staggered, and the limit block 1 (37) contacts the transmission gear 1 (34) through a tooth structure.

4. The internal combustion engine component strength testing device according to claim 1, characterized in that: The upper connecting component (41) and the lower connecting component (42) have the same structure, and the upper connecting component (41) and the lower connecting component (42) are symmetrically distributed on the upper and lower sides of the connecting rod hole (17), and the second frame plate component (411) is provided with a through groove corresponding to the connecting rod component (14) and the connecting rod cover (15), and the connecting rod component (14) and the connecting rod cover (15) are located in the through groove of the second frame plate component (411).

5. The internal combustion engine component strength testing device according to claim 1, characterized in that: The upper connecting assembly (41) and the lower connecting assembly (42) are connected via a second bolt member (43); the side inner plate (44) is connected to a second frame plate member (411) of the upper connecting assembly (41); and the second driving gear (413) is connected to the second frame plate member (411) via a rotating shaft.

6. The internal combustion engine component strength testing device according to claim 1, characterized in that: The transmission gear 2 (414), the transverse axis 2 (415) and the cam 2 (416) are provided in three numbers, and the three transmission gear 2 (414), the transverse axis 2 (415) and the cam 2 (416) are distributed inside the connecting rod hole (17).

7. The internal combustion engine component strength testing device according to claim 1, characterized in that: The second cam (416) is fixedly connected to the second transverse shaft (415) through a hole, the second cam (416) is in contact with the connecting rod hole (17), the second transverse shaft (415) is connected to the second frame plate (411) through a bearing, and the three second cams (416) are staggered.

8. The internal combustion engine component strength testing device according to claim 1, characterized in that: The side inner plate (44) can be connected to the side plate (25) by bolts, the lower bracket (45) is connected to the bottom of the lower connecting assembly (42), the lower bracket (45) is connected to the lower fixed frame (13), and the second limit block (417) is in contact with the second transmission gear (414) through a tooth structure.

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