Engine connecting rod cracking tool

Abstract

The utility model relates to the technical field of connecting rod machining, and provides an engine connecting rod cracking tool which comprises a rack, a first notch, a sliding block, a second notch, a fixed sleeve, a first through hole, a second through hole, a second through hole, a second through hole, a third through hole, a fourth through hole, a fourth through hole and a fifth through hole, the first fixing part is used for abutting against the inner wall of the through hole, the movable sleeve is fixedly arranged relative to the sliding block, the movable sleeve is provided with a second fixing part, the second fixing part is used for abutting against the inner wall of the through hole, the fixed sleeve and the movable sleeve form a second through hole, and after the movable sleeve slides along with the sliding block, cracking of the large-head end is completed; the outlet faces the second through hole. According to the technical scheme, the problem that in the prior art, the cleaning effect of the expansion section of the connecting rod is poor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting rod processing, and in particular to an engine connecting rod cracking tool. Background Art

[0002] During connecting rod and crankshaft installation, broken connecting rods frequently accumulate iron filings on their end faces. This results in poor cross-section cleanliness, requiring manual cleaning and impacting assembly line efficiency. Timely product delivery is crucial for suppliers to secure customer satisfaction, making improving assembly efficiency crucial. Production lines are assembly lines, and poor quality in any process can impact timely product delivery. Ineffective handling of iron filings can also impact the lifespan of vehicle engines. Utility Model Content

[0003] The utility model provides an engine connecting rod cracking tool, which solves the problem of poor cleaning effect of the connecting rod expanded section in the related art.

[0004] The technical solution of the utility model is as follows:

[0005] An engine connecting rod cracking tool, the engine connecting rod has a large end and a small end, the large end has a through hole, the engine connecting rod cracking tool is used for cracking the large end, including

[0006] a frame having a first notch,

[0007] A slider is slidably arranged relative to the frame, and the slider has a second notch. After the slider slides, the first notch and the second notch form a first through hole.

[0008] The fixed sleeve is fixed relative to the frame and has a first fixing portion, the first fixing portion being used to abut against the inner wall of the through hole.

[0009] The movable sleeve is fixed relative to the slider, and the movable sleeve has a second fixing portion, and the second fixing portion is used to abut against the inner wall of the through hole. The fixed sleeve and the movable sleeve form a second through hole. After the movable sleeve slides with the slider, the big head end completes the cracking. The movable sleeve and the fixed sleeve both have an air path, and the air path has an outlet, and the outlet faces the second through hole.

[0010] As a further technical solution, it also includes

[0011] There are two transition sleeves, one of which is provided on the frame for fixing the fixed sleeve to the frame, and the other is provided on the slider for fixing the slider to the movable sleeve.

[0012] A small head positioning piece is movably arranged on the frame and is used for fixing the small head end.

[0013] As a further technical solution, the small head positioning member includes

[0014] Small head positioning block, the small head positioning block is movably arranged on the frame,

[0015] Small head positioning adjustment block, the small head positioning adjustment block is movably arranged on the small head fixed block,

[0016] A small head positioning shaft is provided on the small head positioning adjustment block and is used for fixing the small head end.

[0017] As a further technical solution, it also includes

[0018] The cover end pressing piston and the rod end pressing piston are both two in number and symmetrically arranged, and the cover end pressing piston and the rod end pressing piston are used to fix the big head end.

[0019] As a further technical solution, it also includes

[0020] The connector is lifted and lowered on the frame, and the connector passes through the first through hole and the second through hole in sequence. The connector has a first guide slope, and the movable sleeve has a second guide slope. After the connector descends, the first guide slope abuts against the second guide slope, and the movable sleeve, the cover end clamping piston and the rod end clamping piston slide synchronously, and the big head end completes the cracking.

[0021] As a further technical solution, it also includes

[0022] A linear drive component is provided on the frame and is used for driving the connecting body to rise and fall.

[0023] As a further technical solution, there is a gap between the connector and the second through hole.

[0024] As a further technical solution, it also includes

[0025] There are two expansion sleeve adjustment blocks, which are respectively arranged on the movable sleeve and the fixed sleeve, and are used to adjust the height of the engine connecting rod relative to the fixed sleeve and the movable sleeve.

[0026] As a further technical solution, the gas circuit has several branches, and each branch has one outlet.

[0027] The working principle and beneficial effects of the utility model are as follows:

[0028] In the present invention, the frame serves as the basic framework of the entire cracking tool and has a first notch. The frame provides support for all other components and ensures the correct positional relationship between the various parts. The slider is slidably arranged relative to the frame and has a second notch. The slider slides relative to the frame under the action of the driving mechanism. After the slider slides, the first notch and the second notch form a first through hole, providing space for other components of the engine connecting rod cracking. The fixed sleeve is fixed relative to the frame and has a first fixing portion. The design of the fixed sleeve ensures that the engine connecting rod can be stably fixed during the cracking process. The first fixing portion is used to abut against the inner wall of the through hole to ensure the stability of the position of the engine connecting rod during the cracking process. The first fixing portion is designed to be in contact with the inner wall of the through hole and is usually made of a material with a certain hardness to ensure the stability of the position of the engine connecting rod during the cracking process. The design of the first fixing portion ensures that the engine connecting rod can be stably fixed during the cracking process and avoids unnecessary movement of the engine connecting rod during the cracking process. The movable sleeve is fixed relative to the slider and has a second fixing portion. The design of the movable sleeve ensures the stable fixation of the moving portion of the connecting rod during the cracking process. The second fixing portion abuts against the inner wall of the through-hole, ensuring the stable position of the cracked portion of the connecting rod during the cracking process. The movable sleeve moves with the movement of the slider, achieving cracking of the connecting rod. The second through-hole is formed by the fixed sleeve and the movable sleeve. The design of the second through-hole provides the necessary space for the movement of related components during the cracking of the connecting rod. Both the movable sleeve and the fixed sleeve have air passages with outlets facing the second through-hole. The air passages are designed to provide the necessary pressurized gas after cracking the connecting rod. The gas is fed into the second through-hole through the outlet to assist in blowing off slag during the cracking process. The process begins by placing the large end of the connecting rod to be cracked into the second through-hole. The connecting rod is secured by the first fixing portion of the fixed sleeve and the second fixing portion of the movable sleeve. The drive mechanism is activated, and the slider begins to slide relative to the frame, with the movable sleeve moving with the slider. As the slider slides, the first through-hole formed by the first and second notches begins to deform and enlarge, and the second through-hole between the movable sleeve and the fixed sleeve gradually expands, achieving cracking of the connecting rod. After the cracking is completed, the driving mechanism is stopped, and pressurized gas is blown out of the air circuit. After the gas has finished blowing away the residue, the cracked engine connecting rod component is removed. Through the above design, this embodiment provides an engine connecting rod cracking tool with a simple structure and easy use, which is suitable for the cracking processing of the engine connecting rod and can greatly improve the cracking efficiency and quality. The design of the air circuit can provide the necessary pressure-removing gas for the cracking of the engine connecting rod, and assist the cracking process of the engine connecting rod. The processing quality of the engine connecting rod is improved, and the problem of debris from the fracture surface of the engine connecting rod entering the engine after assembly, causing the engine to produce abnormal noise, is avoided, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The preferred embodiments will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0030] Figure 1 This is a schematic diagram of the structure of the utility model;

[0031] Figure 2 It is a partial structural diagram of the utility model;

[0032] Figure 3 A partial structural diagram of another perspective of the utility model;

[0033] In the figure: engine connecting rod-1, big head end-101, small head end-102, through hole-103, frame-2, first notch-201, slider-3, second notch-301, first through hole-302, fixed sleeve-4, first fixing part-401, movable sleeve-5, second fixing part-501, second through hole-502, second guide slope-503, gap-504, air path-6, outlet-601, transition sleeve-7, small head positioning part-8, small head positioning block-801, small head positioning adjustment block-802, small head positioning shaft-803, cover end clamping piston-9, rod end clamping piston-10, connector-11, first guide slope-1101, linear drive part-12, expansion sleeve adjustment block-13. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0035] To simplify the drawings, only the parts relevant to the utility model are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0036] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0037] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0038] Reference Figures 1 to 3 , which is the third embodiment of the present utility model, proposes an engine connecting rod 1 cracking tool, the engine connecting rod 1 has a large end 101 and a small end 102, the large end 101 has a through hole 103, the engine connecting rod 1 cracking tool is used for cracking the large end 101, including a frame 2, the frame 2 has a first notch 201, the slider 3 is slidably arranged relative to the frame 2, the slider 3 has a second notch 301, after the slider 3 slides, the first notch 201 and the second notch 301 form a first through hole 302, the fixed sleeve 4 is relative to the frame 2 is fixedly arranged, the fixed sleeve 4 has a first fixing portion 401, and the first fixing portion 401 is used to abut against the inner wall of the through hole 103. The movable sleeve 5 is fixedly arranged relative to the slider 3, and the movable sleeve 5 has a second fixing portion 501, and the second fixing portion 501 is used to abut against the inner wall of the through hole 103. The fixed sleeve 4 and the movable sleeve 5 form a second through hole 502. After the movable sleeve 5 slides with the slider 3, the big head end 101 completes the cracking. The movable sleeve 5 and the fixed sleeve 4 both have an air path 6, and the air path 6 has an outlet 601, and the outlet 601 faces the second through hole 502.

[0039] In this embodiment, the frame 2 serves as the foundation for the entire cracking tooling and has a first notch 201. The frame 2 provides support for all other components, ensuring the correct positioning of each part. A slider 3 is slidably mounted relative to the frame 2 and has a second notch 301. Driven by a drive mechanism, the slider 3 slides relative to the frame 2. The first notch 201 and the second notch 301 form a first through-hole 302, providing space for the other components of the engine connecting rod 1 to be cracked. A fixed sleeve 4 is fixedly mounted relative to the frame 2 and has a first fixing portion 401. The design of the fixed sleeve 4 ensures that the engine connecting rod 1 remains stably fixed during the cracking process. The first fixing portion 401 is designed to abut against the inner wall of the through hole 103, ensuring the stable position of the engine connecting rod 1 during the cracking process. The first fixing portion 401 is designed to contact the inner wall of the through hole 103 and is typically made of a material with a certain hardness to ensure the stable position of the engine connecting rod 1 during the cracking process. The design of the first fixing portion 401 ensures that the engine connecting rod 1 remains stably fixed during the cracking process, preventing unnecessary movement of the engine connecting rod 1 during the cracking process. The movable sleeve 5 is fixed relative to the slider 3 and has a second fixing portion 501. The design of the movable sleeve 5 ensures that the movable portion of the engine connecting rod 1 can be stably fixed during the cracking process. The second fixing portion 501 is used to abut the inner wall of the through hole 103, ensuring the stable position of the cracked portion of the engine connecting rod 1 during the cracking process. The movable sleeve 5 moves with the movement of the slider 3 to achieve the cracking of the engine connecting rod 1. The second through hole 502 is formed by the fixed sleeve 4 and the movable sleeve 5. The design of the second through hole 502 provides the necessary space for the movement of related components during the cracking of the engine connecting rod 1. The movable sleeve 5 and the fixed sleeve 4 both have an air path 6, which has an outlet 601, which faces the second through hole 502. The design of the air path 6 can provide the necessary pressurized gas after the cracking of the engine connecting rod 1. The gas is delivered into the second through hole 502 through the outlet 601 to assist in blowing out the slag during the cracking process of the engine connecting rod 1. The process begins by placing the large end 101 of the engine connecting rod 1 to be cracked into the second through-hole 502. The engine connecting rod 1 is secured by the first fixing portion 401 of the fixed sleeve 4 and the second fixing portion 501 of the movable sleeve 5. The drive mechanism is activated, and the slider 3 begins to slide relative to the frame 2, with the movable sleeve 5 moving along with the slider 3. As the slider 3 slides, the first through-hole 302 formed by the first notch 201 and the second notch 301 begins to deform and enlarge, and the second through-hole 502 between the movable sleeve 5 and the fixed sleeve 4 gradually enlarges, completing the cracking of the engine connecting rod 1. After the cracking is complete, the drive mechanism is stopped, and pressurized gas is blown out of the gas path 6. After the gas has completely blown away any residue, the cracked engine connecting rod 1 component is removed. Through the above design, this embodiment provides a simple and easy-to-use tool for cracking engine connecting rods 1, suitable for cracking engine connecting rods 1 and significantly improving cracking efficiency and quality. The design of the gas path 6 provides the necessary pressurized impurity-removing gas for cracking the engine connecting rod 1, assisting the cracking process.The processing quality of the engine connecting rod 1 is improved, and the problem that debris on the fracture surface of the engine connecting rod 1 enters the engine after assembly and causes abnormal noise in the engine is avoided, thereby improving product quality.

[0040] Furthermore, it also includes a transition sleeve 7, there are two transition sleeves 7, one transition sleeve 7 is set on the frame 2, for fixing the fixed sleeve 4 and the frame 2, and the other transition sleeve 7 is set on the slider 3, for fixing the slider 3 and the movable sleeve 5, and the small head fixed piece is movably set on the frame 2 for fixing the small head end 102.

[0041] In this embodiment, two transition sleeves 7 are provided. One transition sleeve 7 is positioned on the frame 2 to secure the fixed sleeve 4 to the frame 2; the other transition sleeve 7 is positioned on the slider 3 to secure the slider 3 to the movable sleeve 5. The design of the transition sleeve 7 ensures a more stable fixation of the fixed sleeve 4 and movable sleeve 5 to the frame 2 and slider 3, improving the stability of the engine connecting rod 1 during the cracking process. The small end positioning member 8 is removably positioned on the frame 2 to secure the small end 102. The design of the small end positioning member 8 ensures that the small end 102 of the engine connecting rod 1 is stably fixed during the cracking process, preventing unnecessary movement of the small end 102. The workflow involves first placing the large end 101 of the engine connecting rod 1 to be cracked into the second through-hole 502. The engine connecting rod 1 is then secured using the first securing portion 401 of the fixed sleeve 4 and the second securing portion 501 of the movable sleeve 5. Simultaneously, the small end 102 is placed on the small end positioning member 8 to ensure its stability. The drive mechanism is started, and the slider 3 begins to slide relative to the frame 2, and the movable sleeve 5 moves with the slider 3. As the slider 3 slides, the first through-hole 302 formed by the first notch 201 and the second notch 301 expands, and the second through-hole 502 between the movable sleeve 5 and the fixed sleeve 4 expands synchronously, achieving the cracking of the engine connecting rod 1. After the cracking is completed, the drive mechanism is stopped and the cracked engine connecting rod 1 component is removed. Through the above design, the cracking efficiency and quality can be greatly improved. The design of the transition sleeve 7 and the small head positioning member 8 ensures the stability of the engine connecting rod 1 during the cracking process, improving the controllability and safety of the cracking process.

[0042] Furthermore, the small head positioning member 8 includes a small head positioning block 801, which is movably set on the frame 2, a small head positioning adjustment block 802 is movably set on the small head positioning block, and a small head positioning shaft 803 is set on the small head positioning adjustment block 802 for fixing the small head end 102.

[0043] In this embodiment, the small head positioning block 801 is movably set on the frame 2. The small head positioning adjustment block 802 is movably set on the small head positioning block 801. The design of the small head positioning adjustment block 802 ensures that the small head end 102 can be adjusted according to different models of engine connecting rods 1 to adapt to small head ends 102 of different sizes. The small head positioning shaft 803 is set on the small head positioning adjustment block 802 for fixing the small head end 102. The design of the small head positioning shaft 803 ensures that the small head end 102 can be stably fixed during the cracking process, avoiding unnecessary movement of the small head end 102 during the cracking process. Through the above design, a simple-structured and easy-to-use engine connecting rod 1 cracking tool is provided, which is suitable for the cracking processing of the engine connecting rod 1 and can greatly improve the cracking efficiency and quality. The design of the small head positioning block 801, the small head positioning adjustment block 802 and the small head positioning shaft 803 ensures the stability of the engine connecting rod 1 during the cracking process and improves the controllability and safety of the cracking process.

[0044] Furthermore, it also includes a cover end clamping piston 9 and a rod end clamping piston 10. There are two cover end clamping pistons 9 and two rod end clamping pistons 10, which are symmetrically arranged. The cover end clamping piston 9 and the rod end clamping piston 10 are used to fix the big head end 101.

[0045] In this embodiment, there are two cover-end clamping pistons 9, which are symmetrically arranged on both sides of the big end 101, and are used to fix the big end 101. The design of the cover-end clamping piston 9 ensures that the cracking part of the big end 101 can be stably fixed during the cracking process, and avoids unnecessary movement of the cracking part of the big end 101 during the cracking process. There are also two rod-end clamping pistons 10, which are symmetrically arranged on both sides of the big end 101, and are used to fix the big end 101. The design of the rod-end clamping piston 10 ensures that the big end 101 can be stably fixed during the cracking process, and avoids unnecessary movement of the big end 101 during the cracking process. Through the above design, a simple-structured and easy-to-use engine connecting rod 1 cracking tool is provided, which can greatly improve the cracking efficiency and quality. The design of the cover-end clamping piston 9 and the rod-end clamping piston 10 ensures the stability of the engine connecting rod 1 during the cracking process, and improves the controllability and safety of the cracking process.

[0046] Furthermore, it also includes a connector 11, which is set to be raised and lowered on the frame 2. The connector 11 passes through the first through hole 302 and the second through hole 502 in sequence. The connector 11 has a first guide slope 1101, and the movable sleeve 5 has a second guide slope 503. After the connector 11 descends, the first guide slope 1101 abuts against the second guide slope 503, and the movable sleeve 5, the cover end clamping piston 9 and the rod end clamping piston 10 slide synchronously, and the big head end 101 completes the cracking.

[0047] In this embodiment, the connector 11 is lifted and set on the frame 2, and the connector 11 passes through the first through hole 302 and the second through hole 502 in sequence. The connector 11 has a first guide bevel 1101. The design of the connector 11 ensures that during the cracking process, through the downward movement of the connector 11, the first guide bevel 1101 abuts against the second guide bevel 503 of the movable sleeve 5, thereby pushing the movable sleeve 5, the cover end clamping piston 9 and the rod end clamping piston 10 to slide synchronously, realizing the cracking of the cracking part of the big end 101. The guide bevel can achieve a stable cracking speed, avoiding uneven cracking speed causing poor cracking effect or a large number of slag particles on the cracking end surface. This makes this type of tooling more suitable for the cracking process of the engine connecting rod 1, and can greatly improve the cracking efficiency and quality. The design of the connector 11 ensures the synchronization and stability of the cracking process, and improves the controllability and safety of the cracking process.

[0048] Furthermore, a linear drive member 12 is included. The linear drive member 12 is arranged on the frame 2 and is used to drive the connecting body 11 to rise and fall.

[0049] In this embodiment, a linear drive member is provided on the frame 2 for driving the lifting and lowering of the connector 11. The design of the linear drive member 12 ensures that the connector 11 can be precisely controlled to descend or ascend, thereby achieving synchronization and stability during the lysis process.

[0050] Furthermore, a gap 504 is defined between the connecting body 11 and the second through hole 502 .

[0051] In this embodiment, a certain gap 504 is designed between the connector 11 and the second through hole 502. The design of the gap 504 ensures that the connector 11 can move freely when starting during the lifting process, and the position of the movable sleeve 5 can be adjusted to facilitate the fixation of the engine connecting rod 1. At the same time, it can also reduce the generation of sudden force between the connector 11 and the second through hole 502, reduce the possibility of damage to the movable sleeve 5, increase the service life of the equipment, and improve the smoothness and stability of the cracking process.

[0052] Furthermore, it also includes expansion sleeve adjustment blocks 13 . There are two expansion sleeve adjustment blocks 13 , which are respectively arranged on the movable sleeve 5 and the fixed sleeve 4 , and are used to adjust the height of the engine connecting rod 1 relative to the fixed sleeve 4 and the movable sleeve 5 .

[0053] In this embodiment, two expansion adjustment blocks 13 are provided, one on each of the movable sleeve 5 and the fixed sleeve 4, for adjusting the height of the engine connecting rod 1 relative to the fixed sleeve 4 and the movable sleeve 5. The design of the expansion adjustment blocks 13 ensures that engine connecting rods 1 of different sizes can be accurately positioned on the tooling. By adjusting the position of the expansion adjustment blocks 13, the tooling can accommodate engine connecting rods 1 of varying heights, thereby enhancing the versatility and flexibility of the cracking tooling.

[0054] Furthermore, the gas circuit 6 has several branches, and each branch has an outlet 601 .

[0055] In this embodiment, gas circuit 6 has several branches, each with an outlet 601. The design of gas circuit 6 ensures that during the cracking process, pressurized gas can be evenly distributed into second through-hole 502 through multiple outlets 601, thereby assisting in the removal of slag from the engine connecting rod 1 during the cracking process. The multiple branches improve the uniformity of gas distribution, allowing slag particles on the movable sleeve 5 or fixed sleeve 4 to be blown off by the pressurized gas, thereby improving the cracking quality and preventing damage to the engine connecting rod 1 caused by slag particles adhering to the movable sleeve 5 or fixed sleeve 4 after the next engine connecting rod 1 is placed after cracking is completed.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. An engine connecting rod cracking tool, wherein the engine connecting rod (1) has a large end (101) and a small end (102), the large end (101) having a through hole (103), and the engine connecting rod cracking tool is used for cracking the large end (101), comprising A frame (2), wherein the frame (2) has a first notch (201), A slider (3), the slider (3) is slidably arranged relative to the frame (2), the slider (3) has a second notch (301), and after the slider (3) slides, the first notch (201) and the second notch (301) form a first through hole (302), A fixed sleeve (4), the fixed sleeve (4) being fixedly arranged relative to the frame (2), the fixed sleeve (4) having a first fixing portion (401), the first fixing portion (401) being used to abut against the inner wall of the through hole (103), A movable sleeve (5), wherein the movable sleeve (5) is fixedly arranged relative to the slider (3), the movable sleeve (5) has a second fixing portion (501), the second fixing portion (501) is used to abut against the inner wall of the through hole (103), the fixed sleeve (4) and the movable sleeve (5) form a second through hole (502), after the movable sleeve (5) slides with the slider (3), the large end (101) is cracked, the movable sleeve (5) and the fixed sleeve (4) both have an air path (6), the air path (6) has an outlet (601), and the outlet (601) faces the second through hole (502).

2. The engine connecting rod cracking tool according to claim 1, characterized in that: Also includes A transition sleeve (7), wherein the transition sleeves (7) are two, one of which is arranged on the frame (2) and used for fixing the fixed sleeve (4) to the frame (2), and the other of which is arranged on the slider (3) and used for fixing the slider (3) to the movable sleeve (5). A small head positioning member (8) is movably arranged on the frame (2) and is used for fixing the small head end (102).

3. The engine connecting rod cracking tool according to claim 2, characterized in that: The small head positioning member (8) includes A small head positioning block (801) is movably arranged on the frame (2). A small head positioning adjustment block (802) is movably arranged on the small head positioning block. A small head positioning shaft (803) is provided on the small head positioning adjustment block (802) and is used for fixing the small head end (102).

4. The engine connecting rod cracking tool according to claim 1, characterized in that: Also includes The cover end pressing piston (9) and the rod end pressing piston (10) are both two and symmetrically arranged. The cover end pressing piston (9) and the rod end pressing piston (10) are used to fix the big head end (101).

5. The engine connecting rod cracking tool according to claim 4, characterized in that: Also includes A connecting body (11) is provided on the frame (2) for lifting, and the connecting body (11) passes through the first through hole (302) and the second through hole (502) in sequence. The connecting body (11) has a first guiding inclined surface (1101), and the movable sleeve (5) has a second guiding inclined surface (503). After the connecting body (11) descends, the first guiding inclined surface (1101) abuts against the second guiding inclined surface (503), and the movable sleeve (5), the cover end clamping piston (9) and the rod end clamping piston (10) slide synchronously, and the big head end (101) completes the cracking.

6. The engine connecting rod cracking tool according to claim 5, characterized in that: Also includes A linear drive member (12), the linear drive member (12) being arranged on the frame (2) and used for driving the connecting body (11) to rise and fall.

7. The engine connecting rod cracking tool according to claim 6, characterized in that: There is a gap (504) between the connector (11) and the second through hole (502).

8. The engine connecting rod cracking tool according to claim 1, characterized in that: Also includes The expansion sleeve adjustment blocks (13) are two and are respectively arranged on the movable sleeve (5) and the fixed sleeve (4) for adjusting the height of the engine connecting rod (1) relative to the fixed sleeve (4) and the movable sleeve (5).

9. The engine connecting rod cracking tool according to claim 1, characterized in that: The gas circuit (6) has a plurality of branches, and each branch has an outlet (601).

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