Composite engine suspension assembly

Abstract

The utility model relates to the technical field of engine suspension systems, and provides a combined type engine suspension assembly which comprises a base, a rubber cushion and a positioning pin shaft, the rubber cushion is inserted into the base, the outer end of the positioning pin shaft is located on the outer side of the base, and the inner end of the positioning pin shaft penetrates through the side wall of the base and then is pressed on the rubber cushion. And meanwhile, the rubber cushion is of a vulcanized integrated structure and is provided with a rubber boss structure, so that buffering and limiting effects are achieved when the rubber cushion moves in a large displacement mode in all directions, and abnormal sound caused by collision between the rubber cushion and the base is avoided. According to the technical scheme, on one hand, the problems that in the related technology, a rubber cushion is prone to disengagement in the vertical direction of the bottom plate of the base, and the connection firmness between the rubber cushion and the base needs to be improved are solved; and on the other hand, the problems that in the prior art, when severe working conditions are met, the deformation displacement amount of engine suspension is too large, rubber is prone to being torn, and a failure mode that rubber and a framework are bonded and stripped occurs are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine suspension systems, and in particular to a composite engine suspension assembly. Background Art

[0002] The engine is usually the source of power, especially in the field of heavy trucks and construction machinery, where high-power engines are used in large numbers. This requires high-strength engine suspension support and buffering to reduce the transmission of engine vibration to the body, while also requiring good fatigue resistance.

[0003] Most of the engine mount assemblies used in the market have rubber connected between the upper and lower plates, and the structure is "single". There are also engine mount assemblies using a "wedge-shaped" assembled structure. Although the current "wedge-shaped" assembled structure of the engine mount assembly can effectively limit the displacement of the engine mount under different working conditions to a certain extent and prevent the engine from over-displacement, the rubber pad is easy to fall off along the vertical direction of the bottom plate of the base, and the connection firmness between the rubber pad and the base needs to be improved; when encountering harsh working conditions, the deformation displacement of the engine mount is too large, and it is easy to cause rubber tearing, rubber and frame bonding and peeling failure modes, and the rubber pad collides with the base to produce abnormal noise. Utility Model Content

[0004] The utility model provides a composite engine suspension assembly, which solves the problems in the related art that the rubber pad is easy to fall off in the vertical direction of the bottom plate of the base, and the connection firmness between the rubber pad and the base needs to be improved; when encountering severe working conditions, the deformation displacement of the engine suspension is too large, and failure modes such as rubber tearing and adhesive peeling of the rubber and the frame are prone to occur, as well as the problem of abnormal noise caused by the collision of the rubber pad and the base.

[0005] The technical solution of the utility model is as follows: a composite engine suspension assembly, comprising:

[0006] A base, the base being used to be connected to the vehicle frame;

[0007] A rubber pad, the rubber pad is inserted into the base, and the rubber pad is used to be connected to the engine;

[0008] The key point is: the base includes:

[0009] Bottom plate,

[0010] A side plate, wherein the side plate is arranged on the bottom plate;

[0011] The composite engine suspension assembly also includes a positioning pin shaft, the outer end of the positioning pin shaft is located outside the base, and the inner end of the positioning pin shaft passes through the side plate of the base and is pressed on the rubber cushion;

[0012] The rubber cushion comprises an upper support, the upper support is arranged between the bottom plate and the side plate, and the upper support is used to be connected to the engine;

[0013] Also includes,

[0014] a first rubber boss, the first rubber boss being located between the side plate and the upper support;

[0015] A second rubber boss is located between the bottom plate and the upper support.

[0016] It also includes a vertical positioning convex strip, which is arranged on the side wall of the rubber cushion, and a vertical positioning groove is arranged on the inner side wall of the side plate, and the vertical positioning convex strip is plugged into the vertical positioning groove.

[0017] It also includes a transverse positioning convex strip, which is arranged at the bottom of the rubber pad. A transverse positioning groove is arranged on the bottom plate, and the transverse positioning convex strip is plugged into the transverse positioning groove.

[0018] The rubber cushion also includes:

[0019] A lining plate, the lining plate is arranged on the periphery of the upper support, and the longitudinal section of the lining plate is a U-shaped structure;

[0020] A rubber filling layer is arranged on the periphery of the upper support, the lining plate is located inside the rubber filling layer, and the inner end of the positioning pin shaft extends to and is pressed on the bottom of the U-shaped structure of the lining plate.

[0021] The number of the lining plates is ≥1, and all the lining plates are arranged along the inner and outer directions on the periphery of the upper support.

[0022] The engine suspension assembly also includes a threaded sleeve, which is preset in the upper support and is used to be connected to the engine.

[0023] An axial limiting groove is provided on the outer wall of the threaded sleeve, and the axial limiting groove is arranged around the circumferential direction of the threaded sleeve. An axial protrusion is provided on the upper support at a position corresponding to the axial limiting groove.

[0024] Radial limiting grooves are provided on the outer wall of the threaded sleeve, and all of the radial limiting grooves are evenly arranged along the circumferential direction of the threaded sleeve. Radial protrusions are provided at positions on the upper support corresponding to the radial limiting grooves.

[0025] A protection groove is provided on the inner wall of one end of the threaded sleeve for connecting with the engine, and the thread of the threaded sleeve is located inside the protection groove.

[0026] The positioning pin shaft is a hollow structure, and a notch running through the length direction of the positioning pin shaft is provided on the side wall of the positioning pin shaft.

[0027] The working principle and beneficial effects of the utility model are as follows: the rubber pad is inserted into the cavity enclosed by the bottom plate and the side plate of the base, the outer end of the positioning pin is located on the outside of the side plate of the base, and the inner end of the positioning pin passes through the side plate of the base and is pressed on the rubber pad. The positioning pin is used to lock the rubber pad and the base together. The positioning pin can play a fixed limiting role, effectively preventing the rubber pad from being dislodged due to large force in the vertical direction of the bottom plate of the base, making the connection between the rubber pad and the base more firm and reliable. When encountering harsh working conditions, the first rubber boss, the second rubber boss and the base can cooperate to effectively suppress the deformation displacement of the engine suspension in their respective directions, control the displacement and vibration of the powertrain, and effectively avoid the failure modes of rubber tearing and rubber and frame bonding and peeling, while avoiding the rubber pad and the base from colliding to produce abnormal noise, which can greatly improve the service life of the engine suspension. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The preferred implementation modes 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 utility model.

[0029] Figure 1 It is a three-dimensional diagram of the utility model in one direction.

[0030] Figure 2 It is a three-dimensional diagram of the utility model from another direction.

[0031] Figure 3 It is a top view of the utility model.

[0032] Figure 4 It is a stereoscopic view of the rubber cushion and the positioning pin shaft in one direction of the utility model.

[0033] Figure 5 It is a stereoscopic view of the rubber cushion in the utility model from another direction.

[0034] Figure 6 It is a three-dimensional diagram in one direction of the rubber cushion of the utility model without the rubber filling layer.

[0035] Figure 7 It is a stereoscopic view from another direction when the rubber cushion in the utility model is not provided with a rubber filling layer.

[0036] Figure 8 It is a three-dimensional diagram of the upper support in one direction of the utility model.

[0037] Fig. 9 It is a three-dimensional view of the upper support in another direction of the utility model.

[0038] Fig.10 It is a three-dimensional view of the base and the positioning pin axis in one direction of the utility model.

[0039] Fig.11 It is a three-dimensional view of the base and the positioning pin axis in another direction of the utility model.

[0040] Fig.12 It is a structural schematic diagram of the threaded sleeve in the utility model.

[0041] Fig.13 It is a stereoscopic diagram of the positioning pin in the utility model.

[0042] Fig.14 It is a three-dimensional diagram in the first direction when the first rubber boss and the base are matched in the utility model.

[0043] Fig.15 It is a three-dimensional diagram in the second direction when the first rubber boss and the base are matched in the utility model.

[0044] Fig.16 It is a structural schematic diagram of the first rubber boss in the utility model.

[0045] Fig.17 It is a structural schematic diagram of the first rubber boss and the second rubber boss in the utility model.

[0046] In the figure: 1, base, 1-1, bottom plate, 1-2, side plate, 2, rubber cushion, 2-1, upper support, 2-2, lining plate, 2-3, rubber filling layer, 3, positioning pin, 4, vertical positioning groove, 5, vertical positioning convex strip, 6, horizontal positioning groove, 7, horizontal positioning convex strip, 8, threaded sleeve, 9, axial limit groove, 10, radial limit groove, 11, protective groove, 12, notch, 13, first rubber boss, 14, second rubber boss. DETAILED DESCRIPTION

[0047] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0048] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0049] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0050] 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.

[0051] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , is an embodiment of the utility model, and proposes a composite engine suspension assembly, including a base 1 and a rubber pad 2, wherein the base 1 is used to be connected to a vehicle frame; the rubber pad 2 is inserted into the base 1, and the rubber pad 2 is used to be connected to an engine; the base 1 includes a bottom plate 1-1 and a side plate 1-2, and the side plate 1-2 is arranged on the bottom plate 1-1; the composite engine suspension assembly also includes a locating pin 3, the outer end of the locating pin 3 is located outside the base 1, and the inner end of the locating pin 3 passes through the side wall of the base 1 and is pressed on the rubber pad 2.

[0052] The rubber cushion 2 includes an upper support 2-1, which is arranged between the bottom plate 1-1 and the side plate 1-2, and is used to connect with the engine; it also includes a first rubber boss 13 and a second rubber boss 14, the first rubber boss 13 is located between the side plate 1-2 and the upper support 2-1; the second rubber boss 14 is located between the bottom plate 1-1 and the upper support 2-1.

[0053] Furthermore, it also includes a vertical positioning ridge 5, which is arranged on the side wall of the rubber cushion 2, and a vertical positioning groove 4 is arranged on the inner side wall of the side plate 1-2, and the vertical positioning ridge 5 is plugged into the vertical positioning groove 4. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Fig.10 and Fig.11 As shown, vertical positioning grooves 4 are provided on both the left and right side panels 1-2 of the base 1, and vertical positioning ridges 5 are provided on both the left and right sides of the rubber pad 2. When the rubber pad 2 is inserted into the base 1, the vertical positioning ridges 5 on the rubber pad 2 are inserted into the vertical positioning grooves 4 on the base 1, which can play a guiding and positioning role. The vertical positioning ridges 5 and the vertical positioning grooves 4 are interference fit, making the connection between the rubber pad 2 and the base 1 more firm and reliable.

[0054] Furthermore, it also includes a transverse positioning convex strip 7, which is arranged at the bottom of the rubber cushion 2, and a transverse positioning groove 6 is arranged on the bottom plate 1-1, and the transverse positioning convex strip 7 is plugged into the transverse positioning groove 6. Figure 4 , Figure 5 , Fig.10 and Fig.11 As shown, when the rubber pad 2 is inserted into the base 1, the transverse positioning ridge 7 on the rubber pad 2 is inserted into the transverse positioning groove 6 on the bottom plate 1-1, which can play a guiding and positioning role, making the connection between the rubber pad 2 and the base 1 more firm and reliable.

[0055] Furthermore, the rubber cushion 2 also includes a lining plate 2-2 and a rubber filling layer 2-3. The lining plate 2-2 is arranged on the periphery of the upper support 2-1, and the cross section of the lining plate 2-2 is a U-shaped structure; the rubber filling layer 2-3 is arranged on the periphery of the upper support 2-1, and the lining plate 2-2 is located inside the rubber filling layer 2-3. The inner end of the positioning pin shaft 3 extends to and is pressed on the bottom of the U-shaped structure of the lining plate 2-2. Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the upper support 2-1 mainly supports the engine, the rubber filling layer 2-3 mainly absorbs vibration and buffers, and the lining plate 2-2 makes the rubber cushion 2 have a sufficiently high strength. The upper support 2-1, the rubber filling layer 2-3 and the lining plate 2-2 are a vulcanized integrated structure with high structural strength, simple production process, and easy assembly.

[0056] Furthermore, the number of the lining plates 2-2 is ≥ 1, and all the lining plates 2-2 are arranged in the outer periphery of the upper support 2-1 along the inner and outer directions. Figure 6 and Figure 7 As shown, the number of lining plates 2-2 is set according to the requirements of the bearing capacity or stiffness of the product, and multiple lining plates 2-2 work together to make the rubber cushion 2 have sufficiently high strength and bearing capacity.

[0057] Furthermore, the engine suspension assembly further comprises a threaded sleeve 8, which is preset in the upper support 2-1 and is used to connect with the engine. Figure 2 , Figure 7 and Fig. 9 As shown, during installation, the screw of the locking bolt is passed through the mounting hole on the engine and threadedly connected to the threaded sleeve 8, thereby fixing the engine on the upper support 2-1, making the connection between the engine and the upper support 2-1 more firm and reliable, and easy to disassemble and assemble.

[0058] Furthermore, an axial limit groove 9 is provided on the outer wall of the threaded sleeve 8, and the axial limit groove 9 is arranged around the circumferential direction of the threaded sleeve 8, and an axial protrusion is provided at a position corresponding to the axial limit groove 9 on the upper support 2-1. Fig.12 As shown, the upper support 21 is made of cast aluminum, and the threaded sleeve 8 is preset inside the upper support 2-1. After casting, the axial protrusion on the upper support 21 is engaged with the axial limit groove 9 on the threaded sleeve 8, which can effectively prevent the threaded sleeve 8 from deviating and falling out along the axial direction.

[0059] Furthermore, radial limiting grooves 10 are provided on the outer wall of the threaded sleeve 8, and all the radial limiting grooves 10 are evenly arranged along the circumferential direction of the threaded sleeve 8, and radial protrusions are provided at positions corresponding to the radial limiting grooves 10 on the upper support 2-1. Fig.12 As shown, after casting is completed, the radial protrusion on the upper support 21 is engaged with the radial limiting groove 10 on the threaded sleeve 8, which can effectively prevent the threaded sleeve 8 and the upper support 2-1 from rotating relative to each other. The radial limiting groove 10 is located in the axial limiting groove 9, making the overall appearance of the threaded sleeve 8 more neat and beautiful. The number of radial limiting grooves 10 is preferably four, and the four radial limiting grooves 10 are evenly arranged along the circumferential direction of the threaded sleeve 8.

[0060] Furthermore, a protection groove 11 is provided on the inner wall of the end of the threaded sleeve 8 for connecting with the engine, and the thread of the threaded sleeve 8 is located inside the protection groove 11. Fig.12 As shown, a protection groove 11 is provided on the inner wall of the right end of the threaded sleeve 8, and the thread of the threaded sleeve 8 is located on the left side of the protection groove 11 to avoid damage to the thread. The depth of the protection groove 11, that is, the length along the left and right direction, is 0.5-1.5 mm.

[0061] Furthermore, the positioning pin shaft 3 is a hollow structure, and a notch 12 is provided on the side wall of the positioning pin shaft 3 and runs through the length direction thereof. Fig.13 As shown, when the positioning pin 3 is inserted through the side plate 1-2 of the base 1 and pressed onto the rubber cushion 2, the presence of the notch 12 can reduce the radial size of the positioning pin 3, making the press-fitting easier, reducing the process load, and ensuring the strength. The inner end outer wall of the positioning pin 3 is provided with a chamfer structure, which saves effort when inserted into the base 1 and the rubber cushion 2.

[0062] In this embodiment, the base 1 and the upper support 2-1 are made of cast aluminum, and are provided with weight-reducing holes and reinforcing rib structures, which can reduce weight and meet the lightweight goal while meeting the strength requirements. The material of the positioning pin 3 is metal, which has sufficiently high strength. A through hole for inserting the positioning pin 3 is provided on the side plate 1-2 of the base 1, and the diameter of the through hole is smaller than the outer diameter of the positioning pin 3, and the difference between the two is 0.5-1.5mm.

[0063] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the lining plate 2-2 is formed into an integral structure by a horizontal plate and two left and right longitudinal plates. The cross section of the lining plate 2-2 is a U-shaped structure. The spacing between the two longitudinal plates gradually increases from the side close to the positioning pin shaft 3 to the other side, that is, a trumpet shape or a V shape. The width of the upper support 2-1 also gradually increases from the side close to the positioning pin shaft 3 to the other side, so that the rubber cushion 2 is formed into a structure with a V-shaped longitudinal section. The angle between the cross sections of the two longitudinal plates is a V-shaped angle. The material of the lining plate 2-2 is metal or non-metal (such as PA66 GF30).

[0064] Two inner and outer lining plates 2-2 are arranged outside the upper support 2-1. Rubber is injected into the mold cavity by injection or pressure injection. The rubber and the three are bonded and vulcanized into a predetermined shape. The hardness of the rubber can be adjusted to produce rubber cushions 2 with different stiffness. The number of lining plates 2-2 can be adjusted according to demand, and the angle of the V-shaped angle can also be adjusted according to demand, usually 30°-120°. The lining plate 2-2 is an integral structure, which can improve the strength of the lining plate 2-2.

[0065] There is an interference fit between the locating pin 3 and the base 1. The locating pin 3 is pressed on the rubber pad 2. The rubber pad 2 and the side plate 1-2 of the base 1 are locked together by the locating pin 3. The locating pin 3 can play a fixed limiting role, effectively preventing the rubber pad 2 from falling out due to a large force in the vertical direction of the bottom plate of the base 1, making the connection between the rubber pad 2 and the base 1 more firm and reliable, which can meet the support, vibration absorption and buffering functions of the engine.

[0066] In order to prevent the engine from being displaced too much in all directions, play a role of limiting buffering, and at the same time avoid the upper support 2-1 from colliding with the inner wall of the base 1 to produce abnormal noise, side plates 1-2 are arranged around the bottom plate 1-1 of the base 1, and each first rubber boss 13 is located between the side plate 1-2 of the base 1 and the upper support 2-1. Figure 1 , Figure 2 , Figure 3 , Fig.14 , Fig.15 and Fig.16 The second rubber boss 14 is located between the bottom plate 1-1 of the base 1 and the upper support 2-1, as shown in FIG. Figure 5 and Fig.17 When encountering severe working conditions, the first rubber boss 13, the second rubber boss 14 cooperate with the base 1 to effectively suppress the deformation displacement of the engine mount in each direction, control the displacement and vibration of the powertrain, effectively avoid the failure modes of rubber tearing and rubber and frame peeling, avoid the rubber cushion 2 and the base 1 colliding to produce abnormal noise, increase the service life of the engine mount, and effectively prevent the transmission of engine vibration and noise to the vehicle body, while achieving the simplification of product assembly and the reduction of product weight to meet the lightweight goal.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A composite engine mount assembly, comprising: A base (1), the base (1) being used to be connected to a vehicle frame; A rubber pad (2), the rubber pad (2) being inserted into the base (1), the rubber pad (2) being used to be connected to the engine; Features: The base (1) comprises: Bottom plate (1-1), A side plate (1-2), wherein the side plate (1-2) is arranged on the bottom plate (1-1); The composite engine suspension assembly also includes a positioning pin (3), the outer end of the positioning pin (3) is located outside the base (1), and the inner end of the positioning pin (3) passes through the side plate (1-2) of the base (1) and is pressed onto the rubber cushion (2); The rubber cushion (2) comprises an upper support (2-1), the upper support (2-1) being arranged between the bottom plate (1-1) and the side plate (1-2), the upper support (2-1) being used for connecting to the engine; Also includes, a first rubber boss (13), the first rubber boss (13) being located between the side plate (1-2) and the upper support (2-1); A second rubber boss (14), wherein the second rubber boss (14) is located between the bottom plate (1-1) and the upper support (2-1).

2. A composite engine mount assembly according to claim 1, characterized in that: It also comprises a vertical positioning convex strip (5), the vertical positioning convex strip (5) being arranged on the side wall of the rubber cushion (2), a vertical positioning groove (4) being arranged on the inner side wall of the side plate (1-2), the vertical positioning convex strip (5) being plugged into the vertical positioning groove (4).

3. The composite engine mount assembly according to claim 1, characterized in that: It also comprises a transverse positioning convex strip (7), the transverse positioning convex strip (7) being arranged at the bottom of the rubber cushion (2), a transverse positioning groove (6) being arranged on the bottom plate (1-1), and the transverse positioning convex strip (7) being plugged into the transverse positioning groove (6).

4. The composite engine mount assembly according to claim 1, characterized in that: The rubber cushion (2) further comprises: A lining plate (2-2), the lining plate (2-2) being arranged on the periphery of the upper support (2-1), and the longitudinal section of the lining plate (2-2) being a U-shaped structure; A rubber filling layer (2-3) is arranged on the periphery of the upper support (2-1), the lining plate (2-2) is located inside the rubber filling layer (2-3), and the inner end of the positioning pin shaft (3) extends to and is pressed onto the bottom of the U-shaped structure of the lining plate (2-2).

5. A composite engine mount assembly according to claim 4, characterized in that: The number of the lining plates (2-2) is ≥1, and all of the lining plates (2-2) are arranged along the inner and outer directions on the periphery of the upper support (2-1).

6. A composite engine mount assembly according to claim 4, characterized in that: It also comprises a threaded sleeve (8), wherein the threaded sleeve (8) is arranged in the upper support (2-1), and the threaded sleeve (8) is used to be connected to the engine.

7. A composite engine mount assembly according to claim 6, characterized in that: An axial limit groove (9) is provided on the outer wall of the threaded sleeve (8), the axial limit groove (9) is arranged around the circumferential direction of the threaded sleeve (8), and an axial protrusion is provided at a position on the upper support (2-1) corresponding to the axial limit groove (9).

8. The composite engine mount assembly according to claim 6, characterized in that: A radial limiting groove (10) is provided on the outer wall of the threaded sleeve (8), all of the radial limiting grooves (10) are evenly arranged along the circumferential direction of the threaded sleeve (8), and a radial protrusion is provided at a position on the upper support (2-1) corresponding to the radial limiting groove (10).

9. The composite engine mount assembly according to claim 6, characterized in that: A protective groove (11) is provided on the inner wall of one end of the threaded sleeve (8) used for connecting to the engine, and the thread of the threaded sleeve (8) is located inside the protective groove (11).

10. The composite engine mount assembly according to claim 1, characterized in that: The positioning pin shaft (3) is a hollow structure, and a notch (12) is provided on the side wall of the positioning pin shaft (3) running through the length direction thereof.

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