Eight-fulcrum suspension low-frequency vibration reduction reinforcing device for piston engine

Abstract

The utility model discloses an eight-fulcrum suspension low-frequency vibration reduction reinforcing device for a piston engine. Relates to the engine field. When an existing hanging type low-frequency shock absorber and a piston engine case vibrate, bolt connection is loosened, vibration of the connecting portion of the piston engine case and the hanging type low-frequency shock absorber is obviously increased, and the running stability of equipment is affected. Comprising a limiting pressing plate, longitudinal supporting plates and a top plate, the two ends of the top plate are connected with the two longitudinal supporting plates, and the bottom ends of the longitudinal supporting plates are connected with the limiting pressing plate; a strip-shaped inserting hole is formed in the top plate, the strip-shaped inserting hole is inserted into a locking plate at the top of the fixing frame, two locking holes of a rectangular structure are formed in the plate face of the locking plate, and elastic locking pieces are inserted into the two locking holes. The long-rod bolt for connecting the piston engine case and the hanging type low-frequency shock absorber is limited through the limiting pressing plate on the reinforcing device, and the reinforcing device is fixed to the fixing frame through the elastic locking piece. The damping device is applied to the field of damping of piston engines.

Description

Technical Field

[0001] The utility model relates to the field of piston engines, in particular to an eight-point suspension low-frequency vibration reduction and reinforcement device for a piston engine. Background Art

[0002] Reciprocating engines, thanks to their compact design and high power density, are widely used in various types of machinery and vehicles. However, they are prone to significant vibration during operation, which not only reduces ride comfort but also compromises the stability of the equipment. Effectively managing vibration and noise is a major technical challenge in current suspension systems. Suspension systems are crucial components for isolating vehicles and machinery from road bumps and operational vibrations. The installation and calibration of shock absorbers is complex, requiring precise positioning and fixing to ensure effective vibration reduction. However, traditional suspension systems often lack flexibility and adaptability, making them difficult to adapt to diverse operating environments and vibration conditions. Traditional suspension systems typically consist of springs and shock absorbers, which may be hydraulic, pneumatic, or made of elastomeric materials. However, these traditional shock absorbers have several limitations: low efficiency and inability to effectively capture and absorb low-frequency vibrations, causing vibration and noise to be transmitted to the vehicle or machinery structure. They also lack durability: long-term operation or use under harsh conditions can lead to performance degradation or damage. Limited adaptability: they struggle to adapt to different suspension system configurations or varying operating environments.

[0003] At the same time, the long-rod bolts connecting the mounted low-frequency vibration damper to the piston engine casing vibrate when the piston engine is operating. Loosening these bolts can significantly increase vibration at connections between the engine and the fuselage, affecting the smooth operation of the equipment. The additional vibration caused by loosening can significantly increase engine noise, affecting the user experience. Prolonged exposure to high-decibel levels can also damage hearing. In severe cases, the connection between the damper and the engine or fuselage can completely fail. Utility Model Content

[0004] In order to solve the problem that the bolts of the existing hanging low-frequency vibration absorber and the piston engine casing become loose during vibration, resulting in significantly increased vibration at the connection part between the piston engine and the hanging low-frequency vibration absorber, thereby affecting the stability of equipment operation, the utility model provides an eight-point hanging low-frequency vibration reduction reinforcement device for a piston engine.

[0005] The technical solution of the utility model is:

[0006] A piston engine eight-point suspension low-frequency vibration damping reinforcement device comprises a connecting component, a fixing frame, a docking rod, and a metal rubber. The connecting component is inserted into a mounting slot of the fixing frame and fixedly connected to the fixing frame via the docking rod. The metal rubber is installed in the slots at both ends of the connecting component to form a hanging low-frequency vibration damper. A group of hanging low-frequency vibration dampers are correspondingly installed on the piston engine casing frame. A reinforcement device is installed above the fixing frame, and the reinforcement device and the fixing frame are connected by an insertable and detachable connection.

[0007] The reinforcing device includes a limiting pressure plate, a longitudinal support plate and a top plate, the two ends of the top plate are vertically connected to the ends of the two longitudinal support plates, the bottom end of the longitudinal support plate is vertically connected to the end of the limiting pressure plate, and the limiting pressure plate, longitudinal support plate and top plate are an integrated structure;

[0008] A strip-shaped insertion hole is provided in the middle position of the top plate, and the strip-shaped insertion hole is inserted into the lock plate on the top of the fixing frame so that the top end of the lock plate passes through the top plate of the reinforcement device. Two rectangular lock holes are symmetrically provided on the plate surface of the lock plate, and elastic lock pieces are inserted into the two lock holes. The reinforcement device and the fixing frame are fixedly connected by the elastic lock piece, and the reinforcement device is fixed above the fixing frame to prevent the reinforcement device from falling off.

[0009] Furthermore, in the eight-point suspension low-frequency vibration reduction reinforcement device for a piston engine, the limiting pressure plate of the reinforcement device is arranged in a horizontal structure, and the limiting pressure plate is arranged above the long rod bolt to limit the long rod bolt;

[0010] The longitudinal support plates of the reinforcement device are longitudinally arranged on both sides of the fixing frame, and the limiting pressure plate and the top plate are connected through the longitudinal support plates;

[0011] The top plate of the reinforcement device is a horizontal structure arranged on the top of the fixing frame, and the strip-shaped insertion hole on the top plate cooperates with the lock plate on the fixing frame. The lock plate is passed through the strip-shaped insertion hole to facilitate the elastic locking piece to pass through the lock hole of the lock plate.

[0012] Furthermore, in the eight-point suspension low-frequency vibration reduction reinforcement device of the piston engine, a triangular rib is installed between the limiting pressure plate and the longitudinal support plate of the reinforcement device, and the triangular rib supports the limiting pressure plate of the reinforcement device.

[0013] Furthermore, in the piston engine eight-point suspension low-frequency vibration reduction reinforcement device, the elastic locking member includes an arched spring piece and a card plate, and two card plates are respectively connected to the outer side of each plug plate on the arched spring piece, and the two card plates are arranged in a parallel structure.

[0014] Furthermore, in the piston engine eight-point suspension low-frequency vibration reduction reinforcement device, the distance between the two clamping plates on the same side of the arched spring is greater than the thickness of the lock plate on the fixed frame, so that the two clamping plates on the same side can be inserted into the lock hole of the lock plate.

[0015] Furthermore, in the eight-point suspension low-frequency vibration reduction reinforcement device of the piston engine, threaded columns are symmetrically connected on the cylinder surface of the connecting component, the threaded column and the connecting component are an integrated structure, and a long-rod bolt is screwed into the threaded hole of the threaded column. By installing a limiting pressure plate on the top of the long-rod bolt, the long-rod bolt is limited to prevent it from falling off from the threaded column.

[0016] Furthermore, in the piston engine eight-point suspension low-frequency vibration reduction reinforcement device, the metal rubber of the hanging low-frequency vibration absorber is used to provide a vibration reduction effect. There are specifically two metal rubbers, and the center of the metal rubber is a circular hole structure.

[0017] Furthermore, in the piston engine eight-point suspension low-frequency vibration reduction reinforcement device, two metal rubber gaskets are inserted into the docking rod, the cross-section of the metal rubber gasket is a T-shaped structure, and the metal rubber is squeezed at the disc of the metal rubber gasket.

[0018] Furthermore, in the piston engine eight-point suspension low-frequency vibration reduction reinforcement device, the docking rod passes through the connecting component, the fixing frame, the two metal rubbers and the two metal rubber gaskets respectively, and the connecting component, the fixing frame, the two metal rubbers and the two metal rubber gaskets form an integrated structure.

[0019] Compared with the prior art, the present invention has the following effects:

[0020] The locking plate is fixed on the top of the fixing frame, and the locking plate is symmetrically provided with a locking hole, and the strip-shaped insertion hole of the top plate of the reinforcing device is inserted into the locking plate, and the plate surface of the limiting pressure plate on the reinforcing device is pressed against the top of the long-rod bolt by the limiting pressure plate of the reinforcing device to limit the nut of the long-rod bolt. After insertion, since the top plate has a certain thickness, the hole position of the locking hole on the locking plate becomes smaller, and the two spring pieces of the elastic locking piece are respectively inserted into the two locking holes of the locking plate, and the elastic locking piece is released. The elastic locking piece returns to the initial state by its own elasticity, and the clamping plates on the elastic locking piece are respectively inserted into the locking plate, so that the elastic locking piece is installed in the locking plate above the fixing frame. The elastic locking piece can prevent the reinforcing device from falling off the fixing frame.

[0021] The present invention adopts a hanging low-frequency vibration absorber to replace the traditional use of vibration absorbers to absorb and isolate vibrations. The vibration absorber may contain components such as hydraulic, pneumatic or elastic materials, but they are often insufficient in efficiency, durability or adaptability. At the same time, the hanging low-frequency vibration absorber is mainly installed on the vibrating body such as the engine body and the gaps around the cylinder and the overall structure, and the built-in metal rubber is used to achieve the structural vibration reduction function. The metal rubber structure is hollowed out in the center, which not only effectively reduces vibrations, but also significantly saves material usage. Finally, the engine casing is connected to the connecting component, which contains metal rubber, and the connecting component is connected to the engine body. The metal rubber fully absorbs vibrations to ensure the excellent effect of the vibration reduction device. The hanging low-frequency vibration reduction device is particularly suitable for connection parts with large vibrations in small piston engines.

[0022] The utility model has the characteristics of simple structure, excellent vibration reduction performance, durability and high adaptability. This shock absorber cleverly uses a unique suspension structure design, which can give full play to the advantages of metal rubber in vibration reduction, effectively isolate low-frequency vibrations, and thus enhance the stability of the suspension system. At the same time, the design also incorporates considerations of ease of installation and maintenance, making it an ideal vibration reduction solution for the suspension system. At the same time, the reinforcement device solves the problem that the long rod bolts connecting the hanging low-frequency shock absorber and the piston engine casing will cause vibration between the piston engine casing and the hanging low-frequency shock absorber when the piston engine is working, which will cause the bolts to loosen, resulting in a significant increase in vibration at the connection points such as the engine and the fuselage, affecting the smooth operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 yes Figure 1 Left view of;

[0025] Figure 3 yes Figure 2 AA section view;

[0026] Figure 4 It is a structural diagram of the connecting parts;

[0027] Figure 5 It is a schematic diagram of the connection between the fixing frame, the docking rod and the metal rubber gasket;

[0028] Figure 6 It is a structural diagram of the fixed frame;

[0029] Figure 7 It is a structural schematic diagram of the reinforcement device;

[0030] Figure 8 yes Figure 7 A top view of

[0031] Figure 9 It is a structural diagram of an elastic locking member;

[0032] Figure 10 It is a structural diagram of the docking rod and the metal rubber gasket;

[0033] Figure 11 It is a schematic diagram of the structure of metal rubber;

[0034] Figure 12 This is a schematic diagram of the structure of a hanging low-frequency vibration absorber installed in a piston engine casing;

[0035] In the figure: 1. Connecting part, 2. Fixing frame, 3. Docking rod, 4. Metal rubber, 5. Reinforcement device, 6. Elastic locking piece, 7. Long rod bolt, 8. Threaded column, 9. Piston engine casing, 10. Metal rubber gasket, 21. Locking plate, 22. Locking hole, 51. Limiting pressure plate, 52. Longitudinal support plate, 53. Top plate, 54. Strip jack, 55. Triangular rib plate, 61. Arched spring piece, 62. Card plate. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention. Specific implementation method one:

[0038] Combine Figure 1 — Figure 6 This embodiment describes an eight-point suspension low-frequency vibration damping and reinforcement device for a piston engine, comprising a connecting component 1, a fixing frame 2, a docking rod 3, and a metal rubber 4. The connecting component 1 is inserted into the mounting groove of the fixing frame 2 and is fixedly connected to the fixing frame 2 via the docking rod 3. The metal rubber 4 is installed in the grooves at both ends of the connecting component 1 to form a hanging low-frequency vibration damper. A group of hanging low-frequency vibration dampers are correspondingly installed on the piston engine casing 9. A reinforcement device 5 is installed above the fixing frame 2, and the reinforcement device 5 and the fixing frame 2 are connected by an insertable and detachable connection.

[0039] The reinforcing device 5 includes a limiting pressure plate 51, a longitudinal support plate 52 and a top plate 53. The two ends of the top plate 53 are vertically connected to the ends of the two longitudinal support plates 52, and the bottom end of the longitudinal support plate 52 is vertically connected to the end of the limiting pressure plate 51. The limiting pressure plate 51, the longitudinal support plates 52 and the top plate 53 are an integrated structure.

[0040] A strip-shaped insertion hole 54 is provided in the middle of the top plate 53, and the strip-shaped insertion hole 54 is inserted into the lock plate 21 on the top of the fixing frame 2, so that the top end of the lock plate 21 passes through the top plate 53 of the reinforcement device 5. Two rectangular lock holes 22 are symmetrically provided on the plate surface of the lock plate 21, and elastic lock members 6 are inserted into the two lock holes 22. The reinforcement device 5 and the fixing frame 2 are fixedly connected by the elastic lock members 6, and the reinforcement device 5 is fixed above the fixing frame 2 to prevent the reinforcement device 5 from falling off.

[0041] The engine casing is connected to a hanging low-frequency vibration damper. The connecting component 1 of the hanging low-frequency vibration damper contains a metal rubber 4. The metal rubber 4 in the connecting component 1 fully absorbs vibrations, ensuring the excellent effect of the vibration damper. The hanging low-frequency vibration damper is particularly suitable for the connection parts of small piston engines that vibrate frequently.

[0042] The metal rubber 4 is made by a weaving process, forming a hollow structure inside and containing air, which reduces the overall elastic modulus and density of the shock absorber, thereby achieving a reduction in mass under the same volume, and compared with traditional shock absorbers, the resonance frequency is increased and the vibration reduction performance is enhanced.

[0043] The outer shell facing the vibration source is connected and fixed to the vibration source through a cylindrical inner shell using a docking rod 3 to complete the connection function with the vibration source and to a certain extent protect the shock absorber from damage when it is not in operation.

[0044] The surface treatment of the outer shell of the fixing bracket 2 includes an anti-corrosion coating to improve the durability of the shock absorber in harsh environments. Specific implementation method 2:

[0046] Combine Figure 7 and Figure 8 This embodiment describes a low-frequency vibration reduction reinforcement device for an eight-point suspension of a piston engine. The limiting pressure plate 51 of the reinforcement device 5 is arranged in a horizontal structure, and the limiting pressure plate 51 is arranged above the long rod bolt 7 to limit the long rod bolt 7.

[0047] The longitudinal support plates 52 of the reinforcement device 5 are longitudinally arranged on both sides of the fixing frame 2, and the limiting pressure plate 51 and the top plate 53 are connected by the longitudinal support plates 52;

[0048] The top plate 53 of the reinforcement device 5 is a horizontal structure arranged at the top of the fixing frame 2, and the strip-shaped insertion hole 54 on the top plate 53 cooperates with the locking plate 21 on the fixing frame 2. The locking plate 21 is passed through the strip-shaped insertion hole 54, which facilitates the elastic locking member 6 to pass through the lock hole 22 of the lock plate 21. Specific implementation method three:

[0050] Combine Figure 7 and Figure 8The present embodiment is described as follows. This embodiment is a low-frequency vibration reduction reinforcement device for an eight-point suspension of a piston engine. A triangular rib 55 is installed between the limiting pressure plate 51 and the longitudinal support plate 52 of the reinforcement device 5. The triangular rib 55 supports the limiting pressure plate 51 of the reinforcement device 5.

[0051] The opening direction of the reinforcement device 5 is consistent with the direction of the vibration source, and the closing direction is opposite to the direction of the vibration source, so as to maximize the vibration reduction effect and extend the service life of the metal rubber. Specific implementation method four:

[0053] Combine Figure 9 The present embodiment is described as follows. This embodiment is a low-frequency vibration reduction and reinforcement device for an eight-point suspension of a piston engine. The elastic locking member 6 includes an arched spring piece 61 and a clamping plate 62. Two clamping plates 62 are respectively connected to the outer side of each plug plate on the arched spring piece 61. The two clamping plates 62 are arranged in a parallel structure.

[0054] The card plate 62 is a rectangular plate structure, and one side of the long side of the card plate 62 is fixed to the vertical plate surface on the arch spring piece 61 by welding, wherein the distance between the two card plates 62 on the same side is slightly larger than the plate back of the lock plate 21, so that the two card plates 62 on the same side can be inserted into the lock hole 22 of the lock plate 21, and the elastic lock member 6 can be fixed above the reinforcement device 5 through the card plate 62 on the elastic lock member 6, thereby fixing the fixing device 5 on the fixing frame 2 to prevent the reinforcement device 5 from falling off. Specific implementation method five:

[0056] Combine Figure 9 Describing this embodiment, this embodiment is a low-frequency vibration reduction and reinforcement device for an eight-point suspension of a piston engine, wherein the distance between the two clamping plates 62 on the same side of the arch spring piece 61 is greater than the thickness of the lock plate 21 on the fixing frame 2, so that the two clamping plates 62 on the same side are inserted into the lock hole 22 of the lock plate 21.

[0057] The lock hole 22 is a rectangular hole structure, and the hole width of the lock hole 22 is greater than the sum of the lengths of the card plate 62 on one side of the elastic lock member 6 and the vertical plate surface on the arched spring piece 61, so that the card plate 62 on the elastic lock member 6 can be inserted into the lock hole 22 on the lock plate 21. Specific implementation method six:

[0059] Combine Figure 4The present embodiment is described. This embodiment is a low-frequency vibration reduction and reinforcement device for an eight-point suspension of a piston engine. Threaded columns 8 are symmetrically connected to the cylinder surface of the connecting component 1. The threaded column 8 and the connecting component 1 are an integrated structure. A long rod bolt 7 is screwed into the threaded hole of the threaded column 8. A limiting pressure plate 51 is installed on the top of the long rod bolt 7 to limit the long rod bolt 7 and prevent the long rod bolt 7 from falling off the threaded column 8.

[0060] The connecting component 1 is used to connect the engine body to the damper composed of metal rubber 4. In addition, a threaded column 8 of a suspension shock absorber is used to firmly install the connecting component 1 on the piston engine casing 9. Specific implementation method seven:

[0062] Combine Figure 11 The present embodiment is described as follows. This embodiment is a piston engine eight-point suspension low-frequency vibration reduction and reinforcement device. The metal rubber 4 of the hanging low-frequency vibration absorber is used to provide a vibration reduction effect. The metal rubber 4 is specifically two, and the center of the metal rubber 4 is a circular hole structure.

[0063] The metal rubber 4 is made into a metal rubber damper by rolling compressed metal wire. Its main body is a cylindrical structure, and the interior of the metal rubber 4 adopts a hollow design. This design can effectively suppress vibration and reduce noise when the vibration source is working. The cylindrical body is specially designed for axial vibration and is intended to adapt to various vibration directions. In order to ensure the strength and rigidity of the structure, metal rubber material is introduced to improve the overall reliability. In terms of vibration reduction, the central hollow design of the cylindrical body plays a key role. Because the main body is hollow and contains air inside, the density and elastic modulus of the entire suspension shock absorber are lower than those of a single material. This design increases the resonant frequency, thereby achieving excellent vibration reduction effect. In addition, the central hollow design also reduces the use of materials, which helps to reduce costs while maintaining good vibration reduction performance.

[0064] Specific implementation method eight: combination Figure 10 The present embodiment is described as follows. This embodiment is a low-frequency vibration reduction and reinforcement device for an eight-point suspension of a piston engine. Two metal rubber gaskets 10 are inserted into the docking rod 3. The cross-section of the metal rubber gasket 10 is a T-shaped structure, and the metal rubber 4 is squeezed at the disc of the metal rubber gasket 10.

[0065] The docking rod 3 is a bolt that runs horizontally through the entire fixing frame 2 and is connected to a pair of metal rubber washers 10. The bolt diameter of the docking rod 3 is 8 mm, and the metal rubber washers have an outer diameter of 12.3 mm. They are used to protect and fix the metal rubber 4. The metal rubber 4 has an outer diameter of 27 mm and an inner diameter of 12.3 mm.

[0066] The distance from the end of the metal rubber gasket 10 to the inner shell of the fixing frame 2 is 15.35 mm, the distance from the center axis of the bolt of the metal rubber 4 to the outer shell of the fixing frame 2 is 28 mm, and the horizontal distance between the two mounting slots of the fixing frame 2 is 38 mm. Specific implementation method nine:

[0068] Combine Figure 1 — Figure 11 This embodiment describes a low-frequency vibration reduction and reinforcement device for an eight-point suspension of a piston engine. The docking rod 3 passes through a connecting component 1, a fixing frame 2, two metal rubbers 4, and two metal rubber gaskets 10, forming an integrated structure. The size and density of the metal rubbers 4 can be adjusted according to the vibration frequency and intensity to optimize vibration reduction performance.

[0069] Working principle:

[0070] First, screw the long rod bolt 7 into the threaded column 8 on the connecting component 1, and fix the connecting component 1 to the piston engine casing 9 through the long rod bolt 7. Install the eight sets of hanging low-frequency vibration absorbers on the piston engine casing 9 in turn through the above method. After the installation is completed, install the reinforcement device 5 between the fixing frame 2. A locking plate 21 is vertically installed on the top of the fixing frame 2. Lock holes 22 are symmetrically opened on the locking plate 21. A strip-shaped socket 54 corresponding to the lock plate 21 is opened on the top plate 53 of the reinforcement device 5. Therefore, when installing the reinforcement device 5, the strip-shaped socket 54 of the top plate 53 of the reinforcement device 5 is inserted into the lock plate 21, and the plate surface of the limiting pressure plate 51 on the reinforcement device 5 is pressed on the top of the long rod bolt. The limiting pressure plate 51 of the reinforcement device is used to press the long rod bolt. The locking member 6 is locked in place and the locking member 6 is locked in place, so that the locking member 6 is locked in place.

[0071] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A piston engine eight-point suspension low-frequency vibration reduction and reinforcement device, comprising a connecting component (1), a fixing frame (2), a docking rod (3) and a metal rubber (4), wherein the connecting component (1) is inserted into the mounting groove of the fixing frame (2), and the connecting component (1) is fixedly connected to the fixing frame (2) through the docking rod (3), and the metal rubber (4) is installed in the grooves at both ends of the connecting component (1) to form a hanging low-frequency vibration damper, and a group of hanging low-frequency vibration dampers are correspondingly installed on the piston engine casing (9) frame, characterized in that A reinforcement device (5) is installed above the fixing frame (2), and the reinforcement device (5) and the fixing frame (2) are connected in an insertable and detachable manner; The reinforcing device (5) comprises a limiting pressure plate (51), a longitudinal support plate (52) and a top plate (53), the two ends of the top plate (53) are vertically connected to the ends of the two longitudinal support plates (52), the bottom end of the longitudinal support plate (52) is vertically connected to the end of the limiting pressure plate (51), and the limiting pressure plate (51), the longitudinal support plate (52) and the top plate (53) are an integrated structure; A strip-shaped insertion hole (54) is provided in the middle of the top plate (53), and the strip-shaped insertion hole (54) is inserted into the lock plate (21) on the top of the fixing frame (2), so that the top end of the lock plate (21) passes through the top plate (53) of the reinforcement device (5). Two rectangular lock holes (22) are symmetrically provided on the plate surface of the lock plate (21), and elastic lock pieces (6) are inserted into the two lock holes (22). The reinforcement device (5) and the fixing frame (2) are fixedly connected by the elastic lock piece (6), and the reinforcement device (5) is fixed above the fixing frame (2) to prevent the reinforcement device (5) from falling off.

2. The piston engine eight-point suspension low-frequency vibration reduction and reinforcement device according to claim 1, characterized in that: The limiting pressure plate (51) of the reinforcement device (5) is arranged in a horizontal structure, and the limiting pressure plate (51) is arranged above the long rod bolt (7) to limit the long rod bolt (7); The longitudinal support plates (52) of the reinforcement device (5) are longitudinally arranged on both sides of the fixing frame (2), and the limiting pressure plate (51) and the top plate (53) are connected via the longitudinal support plates (52); The top plate (53) of the reinforcing device (5) is a horizontal structure arranged on the top of the fixing frame (2), and the strip-shaped insertion hole (54) on the top plate (53) cooperates with the locking plate (21) on the fixing frame (2). The locking plate (21) is passed through the strip-shaped insertion hole (54), so that the elastic locking member (6) can be passed through the locking hole (22) of the locking plate (21).

3. The piston engine eight-point suspension low-frequency vibration reduction and reinforcement device according to claim 2, characterized in that: A triangular rib plate (55) is installed between the limiting pressure plate (51) and the longitudinal support plate (52) of the reinforcement device (5), and the triangular rib plate (55) supports the limiting pressure plate (51) of the reinforcement device (5).

4. The piston engine eight-point suspension low-frequency vibration reduction and reinforcement device according to claim 2, characterized in that: The elastic locking member (6) comprises an arched spring piece (61) and a clamping plate (62). The outer side of each plug-in plate on the arched spring piece (61) is respectively connected to two clamping plates (62), and the two clamping plates (62) are arranged in a parallel structure.

5. The piston engine eight-point suspension low-frequency vibration reduction and reinforcement device according to claim 4, characterized in that: The distance between the two clamping plates (62) on the same side of the arched spring piece (61) is greater than the thickness of the locking plate (21) on the fixing frame (2), so that the two clamping plates (62) on the same side can be inserted into the locking hole (22) of the locking plate (21).

6. The piston engine eight-point suspension low-frequency vibration reduction and reinforcement device according to claim 1, characterized in that: A threaded column (8) is symmetrically connected to the cylindrical surface of the connecting component (1). The threaded column (8) and the connecting component (1) are an integral structure. A long rod bolt (7) is screwed into the threaded hole of the threaded column (8). By installing a limiting pressure plate (51) on the top of the long rod bolt (7), the long rod bolt (7) is limited to prevent the long rod bolt (7) from falling off from the threaded column (8).

7. The piston engine eight-point suspension low-frequency vibration reduction and reinforcement device according to claim 1, characterized in that: The metal rubber (4) of the hanging low-frequency vibration absorber is used to provide a vibration reduction effect. Specifically, there are two metal rubbers (4), and the center of the metal rubber (4) is a circular hole structure.

8. The piston engine eight-point suspension low-frequency vibration reduction and reinforcement device according to claim 1, characterized in that: Two metal rubber gaskets (10) are sleeved on the docking rod (3). The cross section of the metal rubber gasket (10) is a T-shaped structure, and the disc of the metal rubber gasket (10) squeezes the metal rubber (4).

9. The piston engine eight-point suspension low-frequency vibration reduction and reinforcement device according to claim 8, characterized in that: The docking rod (3) passes through the connecting component (1), the fixing frame (2), the two metal rubbers (4) and the two metal rubber gaskets (10) respectively, and the connecting component (1), the fixing frame (2), the two metal rubbers (4) and the two metal rubber gaskets (10) form an integrated structure.

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