Engine suspension support structure for loading machine and engine suspension

Abstract

The utility model discloses an engine suspension support structure and an engine suspension for a loading machine, and relates to the field of engine installation, the engine suspension support structure comprises a left front support, a right front support and a rear support, the left front support and the right front support have the same structure, are respectively arranged on two sides of the front end of an engine and are used for connecting the engine and a vehicle body; the rear bracket is arranged at the rear end of the engine; the left front support comprises a mounting vertical plate, a bottom plate is arranged at the bottom of the mounting vertical plate, and shock absorber mounting holes are formed in the two ends of the bottom plate respectively and used for mounting shock absorbers. The rear support comprises an arc-shaped supporting vertical plate, a notch of the supporting vertical plate faces upwards, the two ends of the supporting vertical plate are connected with supporting flat plates respectively, and shock absorber mounting holes are formed in the supporting flat plates. Six shock absorbers can be installed through the support structure with the three-point supporting arrangement, stress and deformation of a single shock absorber can be effectively reduced, and therefore shock absorption function failure caused by permanent deformation of the shock absorbers is relieved, the service life of the shock absorbers is prolonged, and the shock absorption performance of the whole vehicle is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of engine installation, in particular to an engine suspension bracket structure for a loader and an engine suspension. Background Art

[0002] The suspension system is a part that connects the powertrain and the vehicle body. Its key function is to support the powertrain, shorten the relationship between the powertrain vibration and the entire vehicle, and limit the vibration of the powertrain.

[0003] The engine mount is used to fix the engine to the vehicle body. Most vehicle models have at least three sets of engine mounts. The engine mount includes a bracket connected between the vehicle body and the engine and a shock absorber attached to the bracket. It can reduce the vibration of the engine and isolate the transmission of engine vibration and noise into the vehicle, thereby improving ride comfort.

[0004] At present, most of the engine mounts for loaders adopt four-point suspension support. Each set of engine mount brackets is supported by a shock absorber to support and damp the engine. In this case, a single shock absorber is subjected to a large force and is prone to permanent deformation and failure after 5,000 hours of operation, affecting the shock absorption performance and causing damage to the engine and the vehicle. Especially for large-tonnage loaders, the shock absorber will fail faster and its service life will not be enough to support the design service life of the vehicle.

[0005] In addition, the brackets at each support point are installed independently, and the cumulative assembly tolerance is large, resulting in low engine installation accuracy. Engine resonance may occur when the vehicle is driven, causing large vibration and noise. Utility Model Content

[0006] In view of the deficiencies in the above-mentioned prior art, the utility model provides an engine suspension bracket structure and an engine suspension for a loader, which reduces the force and deformation of a single shock absorber, can slow down the permanent deformation and failure of the shock absorber, extend the service life of the shock absorber, and improve the engine installation accuracy.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] In a first aspect, an engine suspension bracket structure for a loader is provided, comprising a left front bracket, a right front bracket and a rear bracket, wherein the left front bracket and the right front bracket have the same structure and are respectively arranged at both sides of the front end of the engine for connecting the engine and the vehicle body, and the rear bracket is arranged at the rear end of the engine;

[0009] The left front bracket includes a mounting vertical plate, a bottom plate is arranged at the bottom of the mounting vertical plate, and shock absorber mounting holes are respectively arranged at both ends of the bottom plate for mounting the shock absorber;

[0010] The rear support comprises an arc-shaped supporting upright plate, the notch of the supporting upright plate is upward, two ends of the supporting upright plate are respectively connected to the supporting flat plate, and the supporting flat plate is provided with a shock absorber mounting hole.

[0011] Furthermore, reinforcing rib plates and support plates are respectively arranged on both sides of the mounting vertical plate, the support plates and reinforcing rib plates are arranged in parallel, and the bottoms are respectively fixedly connected to the base plate for connecting the engine shock absorber to support and reduce vibration of the engine.

[0012] Furthermore, the support plate is provided with a hoisting hole for hoisting the engine assembly during vehicle assembly.

[0013] Furthermore, the support plate is a rectangular plate, and the side surface of the reinforcing rib plate is triangular. Through the asymmetric design, while satisfying the reinforcing and supporting functions, the internal stress of the front bracket can be minimized, and it can also effectively save materials and reduce costs.

[0014] Furthermore, a limiting groove is arranged on the bottom plate to eliminate stress and avoid the bottom plate from being broken due to stress concentration; the limiting groove is arranged in the middle of the bottom plate, and the shock absorber mounting holes are symmetrically arranged on both sides of the limiting groove.

[0015] Furthermore, the limit groove cooperates with the guide limit block, and the guide limit block is welded to the engine mounting platform of the vehicle body. Its function is to guide and position the engine assembly during the vehicle assembly process after the engine is hoisted, so as to facilitate the precise assembly of the shock absorber and the vehicle mounting platform; at the same time, when the shock absorber or the shock absorber mounting bolt fails, it can effectively prevent the engine from being displaced, thereby minimizing damage to the engine.

[0016] Furthermore, the supporting flat plate is connected to the supporting vertical plate by welding.

[0017] Furthermore, both ends of the supporting upright plate are respectively provided with horizontal outward grooves, the supporting flat plate is engaged in the grooves and is welded to the supporting upright plate, and the supporting flat plate is arranged horizontally.

[0018] Furthermore, a connecting rib plate is provided at the connection between the supporting vertical plate and the supporting flat plate, so as to enhance the stability of the structure and ensure the verticality of the supporting flat plate and the supporting vertical plate during the welding process.

[0019] Furthermore, the mounting plate and the supporting plate are both provided with a plurality of mounting holes, including bolt mounting holes and pin mounting holes. When installing the engine, the pin is first used for positioning and then fixed by bolts.

[0020] In a second aspect, an engine suspension is provided, comprising a bracket and a shock absorber for supporting the engine, wherein the bracket adopts any of the bracket structures described above.

[0021] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0022] 1. The utility model can install 6 shock absorbers through the bracket structure of the three-point support arrangement, which can effectively reduce the force and deformation of a single shock absorber, thereby slowing down the failure of the shock absorption function caused by the permanent deformation of the shock absorber, extending the service life of the shock absorber, and ensuring the shock absorption performance of the whole vehicle.

[0023] 2. Compared with the traditional structure, the left-right integrated engine bracket structure of the present invention reduces the cumulative assembly tolerance when installing the left front bracket and the right front bracket, improves the accuracy of engine installation, and effectively reduces resonance.

[0024] 3. The utility model forms a special limiting structure between the bracket and the vehicle installation platform through the limiting groove and the guide limiting block, which is helpful to prevent the movement of the engine after the failure of the shock absorber and the failure of the shock absorber mounting bolts, and minimizes the damage to the engine and the vehicle in the failure mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0026] Figure 1 This is the installation diagram of the utility model Figure 1 ;

[0027] Figure 2 This is the installation diagram of the utility model Figure 2 ;

[0028] Figure 3 This is a schematic diagram of the structure of the front left bracket or the front right bracket of the utility model;

[0029] Figure 4 It is a top view of the front left bracket or the front right bracket of the utility model;

[0030] Figure 5 This is a schematic diagram of the rear bracket structure of the utility model;

[0031] Figure 6 It is a plan view of the rear bracket of the utility model.

[0032] In the figure: 1. Left front bracket; 2. Right front bracket; 3. Rear bracket; 4. Shock absorber; 5. Mounting plate; 6. Bottom plate; 7. Limiting groove; 8. Support plate; 9. Reinforcing rib plate; 10. Lifting hole; 11. Supporting plate; 12. Supporting flat plate; 13. Connecting rib plate; 14. Shock absorber mounting hole; 15. Pin mounting hole; 16. Bolt mounting hole; 17. Guide limiting block; 18. Positioning half shaft. DETAILED DESCRIPTION

[0033] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0035] Embodiment 1

[0036] In a typical embodiment of the present application, a loader engine suspension bracket structure is provided, such as Figure 1-6 As shown, it includes a left front bracket 1, a right front bracket 2 and a rear bracket 3, wherein the left front bracket 1 and the right front bracket 2 have the same structure and are respectively arranged on both sides of the front end of the engine for connecting the engine and the vehicle body, and the rear bracket is arranged at the rear end of the engine to connect the engine and the vehicle body. At the same time, shock absorbers 4 are installed on the left front bracket, the right front bracket and the rear bracket.

[0037] Among them, Figure 3 As shown, the right front bracket 2 includes a mounting plate 5, which is fitted with the outer wall of the engine when installed. A base plate 6 is provided at the bottom of the mounting plate 5, and the base plate is fixed to the mounting plate by welding. Shock absorber mounting holes 14 are provided at both ends of the extending direction of the base plate 6 for mounting shock absorbers. To ensure structural balance, the shock absorber mounting holes 14 on both sides of the base plate are symmetrically arranged about the limit groove, so that two shock absorbers can be installed at one supporting point of the right front bracket or the left front bracket to better reduce the stress and deformation of a single shock absorber and extend the service life of the shock absorber.

[0038] In addition, in order to improve the support strength, reinforcing rib plates 9 and support plates 8 are respectively provided on both sides of the mounting plate 5. The support plate 8 and the reinforcing rib plates 9 are arranged in parallel. The bottom of the support plate and the bottom of the reinforcing rib plate are fixedly connected to the bottom plate 6 by argon arc welding, which has high strength, low processing cost and small space occupation. A hoisting hole 10 is provided at the upper position of the support plate 8 for hoisting the engine assembly. It should be noted that the support plate is a rectangular plate made of Q235 steel, and the reinforcing rib plate is made of Q355 steel with a triangular side. Through the asymmetric design, while meeting the reinforcing and supporting functions, the internal stress of the left front bracket and the right front bracket can be minimized. In addition, it can effectively save materials and reduce costs.

[0039] like Figure 3 , 4 As shown, a limit slot 7 is also provided in the middle of the bottom plate and between the two shock absorber mounting holes. The limit slot 7 cooperates with the guide limit block 17, and the guide limit block 17 is welded and fixed on the engine platform of the vehicle body. When the bracket structure of this embodiment is installed, the limit slot 7 is engaged with the guide limit block 17, and the engine assembly can be guided and positioned during the vehicle assembly process after the engine is hoisted, so as to facilitate the accurate assembly of the shock absorber and the vehicle mounting platform. When the shock absorber or the shock absorber mounting bolt fails, the engine can be effectively prevented from shifting, minimizing damage to the engine.

[0040] The inner edge of the notch of the limit groove 7 is processed into a sawtooth or wavy tooth shape, the purpose is to eliminate internal stress and avoid stress concentration causing the bottom plate to break. The limit structure of the limit groove and the guide limit block can prevent the movement of the engine after the shock absorber fails and the shock absorber mounting bolt fails, and minimize the damage to the engine and the whole vehicle in the shock absorber failure mode.

[0041] like Figure 2 As shown, the rear bracket 3 is connected with the body at the rear end of the engine. In this embodiment, the rear bracket 3 includes an arc-shaped support plate 11, the notch of the support plate 11 is upward, and the outer arc surface of the support plate is not continuous, and can be independently supported on the ground. Figure 5 , 6As shown, the two ends of the support vertical plate 11 are respectively connected to the support flat plate 12. Specifically, the two ends of the support vertical plate 11 are respectively provided with horizontal outward grooves, and the support flat plate 12 is horizontally engaged in the grooves and extends outwards, and the support flat plate 12 is welded to the support vertical plate 11. Shock absorber mounting holes 14 are respectively provided on the two support flat plates for installing shock absorbers. In order to ensure the stability and balance of the engine installation, the support vertical plate is set as an axisymmetric structure, and the support flat plates and shock absorber mounting holes on both sides are symmetrically arranged, so that the shock absorbers on both sides are balanced and symmetrical, which is conducive to the selection of shock absorbers with the same stiffness and hardness, and effectively prevents assembly errors or mixed installation. In addition, a connecting rib plate 13 is provided at the connection between the support vertical plate 11 and the support flat plate 12. The connecting rib plate 13 is fixed on one side of the support vertical plate to enhance the stability of the structure and ensure the verticality of the support flat plate and the support vertical plate during welding.

[0042] like Figure 5 , 6 As shown, two positioning half shafts 18 are symmetrically provided on the inner arc surface of the rear bracket, which are two semicircular shaft structures, and are used to play a limiting role during the assembly process of the bracket and the engine. In coordination with this, semicircular notches are provided at corresponding positions on the engine body, which cooperate with the positioning half shafts 18 to limit the position, thereby facilitating the installation of the rear bracket and ensuring the installation accuracy of the rear bracket.

[0043] like Figure 3 , 5 As shown, the engine suspension bracket structure of this embodiment is used to achieve the connection between the engine and the vehicle body mounting platform. Multiple mounting holes are set on the mounting plate and the supporting plate. The mounting holes include bolt mounting holes 16 and pin mounting holes 15. When connecting the bracket and the engine, the pin is first used for positioning, and then bolts are used for installation and tightening. Compared with the ordinary bracket only using bolts for installation, the installation accuracy of the bracket is effectively improved. In addition, the vehicle body mounting platform provides a mounting plane for the shock absorber. When the shock absorber is installed, it is installed between the bracket structure and the mounting plane through the shock absorber mounting hole, which can improve the riding experience of the whole vehicle.

[0044] Embodiment 2

[0045] In another embodiment of the present application, an engine mount is also provided, such as Figure 1 As shown, it includes a bracket and a shock absorber 4 for supporting the engine. The bracket adopts the bracket structure of the first embodiment, which can improve the installation accuracy of the engine, and the arrangement of six shock absorbers can be realized through three-point support, which effectively reduces the force and deformation of each shock absorber and alleviates the failure of the vibration reduction function caused by the permanent deformation of the shock absorber.

[0046] 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. Those skilled in the art should understand that the utility model can be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An engine suspension bracket structure for a loader, comprising a left front bracket, a right front bracket and a rear bracket, wherein the left front bracket and the right front bracket have the same structure and are respectively arranged on both sides of the front end of the engine for connecting the engine and the vehicle body, and the rear bracket is arranged at the rear end of the engine, characterized in that: The left front bracket includes a mounting plate, a bottom plate is arranged at the bottom of the mounting plate, and shock absorber mounting holes are respectively arranged at both ends of the bottom plate for installing the shock absorber; the rear bracket includes an arc-shaped supporting plate, the notch of the supporting plate is upward, the two ends of the supporting plate are respectively connected to the supporting flat plate, and the supporting flat plate is also provided with shock absorber mounting holes.

2. The engine suspension bracket structure for a loader according to claim 1, characterized in that: A reinforcing rib plate and a supporting plate are respectively arranged on both sides of the mounting vertical plate. The supporting plate and the reinforcing rib plate are arranged in parallel, and the bottoms thereof are respectively fixedly connected to the bottom plate.

3. The engine suspension bracket structure for a loader according to claim 2, characterized in that: The support plate is provided with a hoisting hole.

4. The engine suspension bracket structure for a loader according to claim 2, characterized in that: The support plate is a rectangular plate, and the side surface of the reinforcing rib plate is triangular.

5. The engine suspension bracket structure for a loader according to claim 1, characterized in that: The bottom plate is provided with a limiting groove, the limiting groove is provided in the middle of the bottom plate, and the shock absorber mounting holes are symmetrically provided on both sides of the limiting groove.

6. The engine suspension bracket structure for a loader as claimed in claim 5, characterized in that: The limiting groove cooperates with the guide limiting block, and the guide limiting block is welded to the vehicle body engine mounting platform.

7. The engine suspension bracket structure for a loader according to claim 1, characterized in that: Both ends of the support vertical plate are respectively provided with horizontal outward grooves, and the support flat plate is clamped in the grooves and is welded to the support vertical plate.

8. The engine suspension bracket structure for a loader as claimed in claim 7, characterized in that: A connecting rib plate is provided at the connection between the supporting upright plate and the supporting flat plate.

9. The engine suspension bracket structure for a loader according to claim 1, characterized in that: The mounting plate and the supporting plate are both provided with a plurality of mounting holes, including bolt mounting holes and pin shaft mounting holes.

10. An engine suspension, comprising a bracket and a shock absorber for supporting an engine, characterized in that: The bracket adopts the engine suspension bracket structure for a loader as described in any one of claims 1-9.

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