Engine support assembly and three-point supporting structure

Abstract

The utility model relates to the technical field of engines, in particular to an engine support assembly and a three-point supporting structure. The support assembly comprises an upper support, a lower support, a fixing pin and a lining. The upper bracket comprises a supporting part and a first rotating part; the top surface of the supporting part is mounted on the top surface of the concave table; the lower bracket comprises a second rotating part and a fixed part, and the fixed part is mounted on the vehicle; the fixing pin penetrates through the first rotating part and the second rotating part and enables the first rotating part and the second rotating part to be connected in a rotating mode, and the lining is arranged between the fixing pin and the second rotating part in a sleeved mode. According to the utility model, the problem that the front bracket in the existing three-point supporting structure is large in size and is not beneficial to spatial arrangement is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an engine bracket component and a three-point support structure. Background Art

[0002] When the engine is matched with a vehicle or unit for different purposes, the stress generated by the vibration generated during the operation of the vehicle or unit is transmitted to the engine, and the impact on the reliability of the engine itself is different. For power generation purposes, since the generator set is fixed in a relatively stable environment, the vibration generated during the working process of the unit is much smaller than that of a mining truck and a bulldozer. Therefore, the stress generated by the vibration of the unit transmitted to the engine is relatively small. Therefore, for power generation purposes, the engine can be supported by four points. However, for mining trucks, bulldozers and other purposes, due to the harsh working environment and severe bumps during work, the vibration generated by the vehicle on the engine is relatively large. Therefore, for mining trucks, bulldozers and other purposes, the engine itself is supported by three points. The engine can achieve a slight left and right swing around the X direction. Therefore, the three-point support can effectively release part of the stress generated by the vibration of the whole vehicle transmitted to the engine, thereby effectively improving the reliability of the engine itself.

[0003] like Figure 1 As shown, the prior art discloses a three-point support structure for an engine, including a front bracket 2 installed at the front end of the engine 1, and two rear brackets at the rear end, the two rear brackets are respectively fixed on both sides of the flywheel housing, and the front bracket is rotatably connected to the boss 11 of the crankshaft outer gear chamber through a bushing. The volume of the front bracket is relatively large and does not utilize the space layout of other structures. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the embodiments of the utility model is to provide an engine bracket assembly and a three-point support structure to solve the problem that the front bracket of the existing three-point support structure is large in size and not conducive to space layout.

[0005] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0006] An engine bracket assembly, the end of the engine has a gear chamber, the lower side of the gear chamber has a recessed platform, the bracket assembly includes: an upper bracket, a lower bracket, a fixing pin and a bushing; the upper bracket includes a supporting portion and a first rotating portion, the top surface of the supporting portion is installed on the top surface of the recessed platform; the lower bracket includes a second rotating portion and a fixing portion, the fixing portion is installed on a vehicle; the fixing pin passes through the first rotating portion and the second rotating portion and rotatably connects the first rotating portion and the second rotating portion, and the bushing is sleeved between the fixing pin and the second rotating portion.

[0007] Optionally, the bracket assembly is located at the concave position of the engine. The supporting part of the upper bracket is located below the top surface of the concave and fits with the top surface of the concave. The supporting part is detachably connected to the top surface of the concave.

[0008] Optionally, both sides of the supporting part are detachably installed on the lower side of the top surface of the concave through bolts. Both sides of the fixing part are detachably installed on the vehicle through bolts. The distance between the connection points on both sides of the fixing part is greater than the distance between the connection points on both sides of the supporting part.

[0009] Optionally, the upper bracket is of a fork ear structure. The side surface of the upper bracket is in a "冂" shape. There are ear plates on both sides and a groove in the middle. There are through holes on the ear plates. The second rotating part of the lower bracket is inserted into the groove in the middle of the upper bracket. There are through holes on the second rotating part. The fixing pin passes through the through holes of the ear plate and the second rotating part.

[0010] Optionally, the bushing is located between the outer wall of the fixing pin and the through hole of the second rotating part. The bushing can rotate relative to the fixing pin and the second rotating part.

[0011] Optionally, a first oil groove is arranged on the contact surface between the bushing and the fixing pin. A second oil groove is arranged on the contact surface between the bushing and the lower bracket. An oil pipe is arranged on the lower bracket. The oil pipe is communicated with the first oil groove. The first oil groove is communicated with the second oil groove.

[0012] Optionally, the first oil groove is arranged on the inner wall surface of the bushing. The second oil groove is arranged on the inner wall surface of the through hole of the lower bracket. An oil hole communicating the first oil groove and the second oil groove is arranged on the bushing.

[0013] Optionally, the first oil groove includes a radial oil groove arranged radially and an axial oil groove arranged axially. The radial oil groove and the axial oil groove are communicated with each other.

[0014] Optionally, the fixing pin has opposite first end and second end. The first end has a stop ring. The diameter of the stop ring is greater than the diameter of the fixing pin body. A clamping groove is arranged at the second end of the fixing pin. The clamping groove is located on one side of the circumferential surface of the fixing pin. The fixing pin passes through the through holes of the upper bracket and the lower bracket. The stop ring is attached to the outer side of the ear plate on one side of the upper bracket. A baffle is installed in the clamping groove of the fixing pin. The baffle is attached to the outer side of the ear plate on the other side of the upper bracket.

[0015] The embodiment of the present invention also provides a three-point support structure for supporting the engine. The three-point support structure includes a rear bracket and the engine bracket assembly as described above. There are two rear brackets, and the two rear brackets are respectively located on both sides of the rear end of the engine. There is one bracket assembly, which is located in the middle of the front end of the engine.

[0016] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:

[0017] The bracket assembly of the utility model changes the structure and installation position of the existing front bracket. The bracket assembly includes an upper bracket, a lower bracket, a fixing pin and a bushing. The upper bracket is installed on the top surface of the concave platform on the lower side of the gear chamber boss. The lower bracket and the upper bracket are rotatably connected by the fixing pin. Compared with the existing front bracket, the overall volume is reduced, which is convenient for the spatial arrangement of other structures and has better adaptability. A bushing is arranged between the lower bracket and the fixing pin to prevent direct friction between the upper bracket and the lower bracket, reduce the wear of the upper bracket and the lower bracket, extend the service life of the bracket assembly, and ensure the normal operation of the engine.

[0018] Additional advantages of the present invention will be given in the following description, and some will become apparent from the following description or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 It is a schematic diagram of the existing three-point support structure;

[0021] Figure 2 It is a schematic diagram of the bracket assembly provided by the embodiment of the utility model installed on the engine;

[0022] Figure 3 It is a schematic diagram of the top surface of the concave platform of the engine provided by the embodiment of the utility model;

[0023] Figure 4 This is a front view of a bracket assembly provided by an embodiment of the utility model;

[0024] Figure 5 It is a schematic longitudinal section diagram of a bracket assembly provided by an embodiment of the utility model;

[0025] Figure 6 is a cross-sectional schematic diagram of a bracket assembly provided by an embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of the interior of the bushing provided by an embodiment of the utility model;

[0027] Figure 8 It is a schematic diagram of a three-point support structure provided by an embodiment of the utility model;

[0028] In the figure: 1, engine; 11, boss; 12, top surface of concave platform; 13, concave platform; 2, front bracket; 3, bracket assembly; 31, upper bracket; 32, lower bracket; 33, baffle; 34, fixing pin; 35, oil pipe; 36, bushing; 361, first oil groove; 362, oil hole; 4, rear bracket;

[0029] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are illustrative 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 of ordinary skill in the art to which the present invention belongs. 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.

[0031] In order to solve the technical problems raised by the background technology, the embodiment of the utility model proposes an engine bracket assembly 3. Figure 2 , Figure 3 As shown, there is a gear chamber at the end of the engine 1, and a concave platform 13 is formed at the lower side of the gear chamber. Two triangular concave platform top surfaces 12 are formed on the top of the concave platform 13 for installing the bracket assembly 3. The bracket assembly 3 includes an upper bracket 31, a lower bracket 32, a fixing pin 34 and a bushing 36.

[0032] like Figure 4 , Figure 5 As shown, the upper bracket 31 includes a supporting part and a first rotating part, the supporting part is located on the upper side of the first rotating part, and the top surface of the supporting part is installed on the top surface of the concave platform 12, and the lower bracket 32 ​​includes a second rotating part and a fixing part, the second rotating part is located on the upper side of the fixing part, and the fixing part is installed on the vehicle for fixing.

[0033] like Figure 6 As shown, the fixing pin 34 passes through the first rotating part of the upper bracket 31 and the second rotating part of the lower bracket 32 ​​, and makes the first rotating part and the second rotating part rotationally connected, and the bushing 36 is sleeved between the fixing pin 34 and the second rotating part of the lower bracket 32 ​​.

[0034] The bracket assembly 3 of this embodiment changes the structure and installation position of the existing front bracket 2. The bracket assembly 3 includes an upper bracket 31, a lower bracket 32, a fixing pin 34, and a bushing 36. The upper bracket 31 is installed on the top surface 12 of the concave platform under the convex platform 11 of the gear chamber. The lower bracket 32 and the upper bracket 31 are rotationally connected through the fixing pin 34. Compared with the existing front bracket 2, the overall volume is reduced, which is convenient for the spatial arrangement of other structures and has better adaptability. And a bushing 36 is arranged between the lower bracket 32 and the fixing pin 34 to prevent direct friction between the upper bracket 31 and the lower bracket 32, reduce the wear of the upper bracket 31 and the lower bracket 32, extend the service life of the bracket assembly 3, and ensure the normal operation of the engine 1 at the same time.

[0035] As Figure 2 shown, the bracket assembly 3 is located at the position of the concave platform 13 under the convex platform 11 of the gear chamber of the engine 1. The supporting part of the upper bracket 31 is located under the top surface 12 of the concave platform and fits with the top surface 12 of the concave platform. The supporting part is detachably connected to the top surface 12 of the concave platform. Specifically, as Figure 4 shown, the left and right sides of the supporting part of the upper bracket 31 are detachably installed on the lower side of the top surface 12 of the concave platform through bolts. As Figure 6 shown, bolt holes are provided on the left and right sides of the fixing part of the lower bracket 32. The fixing part is detachably installed on the vehicle through bolts on both sides. Among them, the distance between the bolt connection points on both sides of the fixing part is greater than the distance between the bolt connection points on both sides of the supporting part, that is, the distance between the two connection points where the lower bracket 32 is fixed to the vehicle is far to ensure the connection strength, and the distance between the two connection points of the upper bracket 31 and the top surface 12 of the concave platform is close to reduce the overall volume, ensure the connection strength and do not occupy too much space, making it more convenient for spatial arrangement.

[0036] As Figure 4 、 Figure 6 shown, the upper bracket 31 is a fork-ear structure. The side surface of the upper bracket 31 is in a 冂 shape. The two sides are ear plates (i.e., the first rotating part). There is a groove between the two ear plates in the middle. The ear plates have through holes for installing the fixing pin 34. The upper end of the lower bracket 32 has an ear part (i.e., the second rotating part). The second rotating part is inserted into the groove in the middle of the upper bracket 31. The second rotating part has a through hole. The fixing pin 34 passes through the through hole of the ear plate and the through hole of the second rotating part. As Figure 6 shown, the bushing 36 is located between the outer wall of the fixing pin 34 and the through hole of the second rotating part. The bushing 36 can rotate relative to the fixing pin 34 and the second rotating part. When vibrations occur during the vehicle operation, the first bracket and the second bracket swing slightly, releasing a part of the stress generated by the vibration of the whole vehicle transmitted to the engine 1, and improving the reliability of the engine 1 itself.

[0037] Of course, it can be understood that in another embodiment, the structures of the upper bracket 31 and the lower bracket 32 can be swapped, that is, the lower bracket 32 is a fork ear structure. The side of the second rotating part of the lower bracket 32 is U-shaped, with ear plates on both sides and a groove in the middle of the two ear plates. The lower end of the upper bracket 31 has an ear part, which is inserted into the groove in the middle of the lower bracket 32 and connected by a fixing pin 34.

[0038] As Figure 6 shown, a first oil groove 361 is provided on the contact surface between the bushing 36 and the fixing pin 34, and a second oil groove is provided on the contact surface between the bushing 36 and the lower bracket 32. As Figure 5 shown, an oil pipe 35 is provided on the lower bracket 32. The oil pipe 35 communicates with the first oil groove 361, and the first oil groove 361 communicates with the second oil groove. Lubricating oil is input through the oil pipe 35 for lubrication, reducing the friction and wear between the upper bracket 31, the bushing 36 and the lower bracket 32, and improving the working safety of the engine 1.

[0039] The first oil groove 361 can be provided on the inner wall surface of the bushing 36 or on the outer wall surface of the fixing pin 34. The second oil groove can be provided on the outer wall surface of the bushing 36 or on the inner wall surface of the through hole of the lower bracket 32. In this embodiment, the two oil grooves are respectively provided on the bushing 36 and the lower bracket 32. Specifically, the first oil groove 361 is provided on the inner wall surface of the bushing 36, and the second oil groove is provided on the inner wall surface of the through hole of the lower bracket 32. This setting not only ensures the lubrication effect between components but also takes into account the strength of each component.

[0040] As Figure 7 shown, an oil hole 362 is provided on the bushing 36. The oil hole 362 communicates the first oil groove 361 and the second oil groove. Among them, the first oil groove 361 includes a radial oil groove arranged radially and an axial oil groove arranged axially, and the radial oil groove and the axial oil groove are connected. The second oil groove on the inner wall surface of the through hole of the lower bracket 32 has the same arrangement as the first oil groove 361, and also includes a radially arranged radial oil groove and an axially arranged axial oil groove. Lubricating oil is input through the oil pipe 35, passes through the radial oil groove and the axial oil groove, and finally fills the entire oil groove to form an oil film, thereby reducing friction and ensuring reliability.

[0041] As Figure 6 shown, the fixing pin 34 has opposite first ends ( Figure 6 the upper middle end) and second ends ( Figure 6The first end has a stop ring, the diameter of which is larger than the diameter of the fixing pin 34 body, the second end of the fixing pin 34 is provided with a slot, the slot is located on one side (bottom side) of the circumferential surface of the fixing pin 34, the fixing pin 34 passes through the through holes of the upper bracket 31 and the lower bracket 32, the stop ring is attached to the outer side of the ear plate on one side of the upper bracket 31, a baffle 33 is installed in the slot of the fixing pin 34, the baffle 33 is attached to the outer side of the ear plate on the other side of the upper bracket 31, and the baffle 33 is fixed to the ear plate of the upper bracket 31 by bolts. The fixing pin 34 is fixed by the baffle 33 in combination with the bolts, and the structure is simpler and easy to disassemble.

[0042] Based on the above-mentioned bracket assembly 3, the embodiment of the utility model further provides a three-point support structure for supporting the engine 1, the three-point support structure includes a rear bracket 4 and a bracket assembly 3, such as Figure 8 As shown, the rear bracket 4 has two, and the two rear brackets 4 are respectively located at the rear end of the engine 1 (i.e. Figure 8 The bracket assembly 3 has one on both sides of the front end of the engine 1 (i.e. Figure 8 middle right end).

[0043] For mining trucks and bulldozers, due to the harsh working environment and severe bumps during operation, the vibration of the whole vehicle on the engine 1 is relatively large. Therefore, for mining trucks and bulldozers, the engine 1 itself adopts a three-point support form. Through the front bracket assembly 3, the engine 1 can achieve a slight swing around the X direction, effectively releasing a part of the stress caused by the vibration of the whole vehicle transmitted to the engine, thereby improving the reliability of the engine 1 itself.

[0044] In order to ensure universality, the bracket assembly 3 can also be removed, and two rear brackets 4 can be installed at the front end of the engine 1, and arranged symmetrically with the two rear brackets 4 at the rear end. This can effectively solve the problem of different fixing forms of the engine 1 for different purposes, improve the universality of the fixing form of the engine 1, thereby effectively protecting the engine 1 and improving the reliability of the engine 1.

[0045] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. An engine bracket assembly, wherein the end of the engine has a gear chamber, and the lower side of the gear chamber has a concave platform, characterized in that: The bracket assembly includes: an upper bracket, a lower bracket, a fixing pin, and a bushing; The upper bracket includes a supporting part and a first rotating part. The top surface of the supporting part is mounted on the top surface of the concave platform. The lower bracket includes a second rotating part and a fixing part, and the fixing part is mounted on the vehicle; The fixing pin passes through the first rotating part and the second rotating part, and rotatably connects the first rotating part and the second rotating part. The bushing is sleeved between the fixing pin and the second rotating part.

2. The engine bracket assembly according to claim 1, characterized in that: The bracket assembly is located at the concave platform position of the engine. The supporting part of the upper bracket is located below the top surface of the concave platform and is in contact with the top surface of the concave platform. The supporting part is detachably connected to the top surface of the concave platform.

3. The engine bracket assembly according to claim 2, characterized in that: Both sides of the supporting part are detachably mounted on the lower side of the top surface of the concave platform by bolts. Both sides of the fixing part are detachably mounted on the vehicle by bolts. The distance between the connection points on both sides of the fixing part is greater than the distance between the connection points on both sides of the supporting part.

4. The engine bracket assembly according to claim 1, characterized in that: The upper bracket is of a fork ear structure. The side surface of the upper bracket is in a "冂" shape. There are ear plates on both sides and a groove in the middle. There are through holes on the ear plates. The second rotating part of the lower bracket is inserted into the groove in the middle of the upper bracket. There are through holes on the second rotating part. The fixing pin penetrates through the through holes of the ear plates and the through holes of the second rotating part.

5. The engine bracket assembly according to claim 4, characterized in that: The bushing is located between the outer wall of the fixing pin and the through hole of the second rotating part, and the bushing can rotate relative to the fixing pin and the second rotating part.

6. The engine bracket assembly according to claim 5, characterized in that: A first oil groove is provided on the contact surface between the bushing and the fixing pin. A second oil groove is provided on the contact surface between the bushing and the lower bracket. An oil pipe is provided on the lower bracket, and the oil pipe is communicated with the first oil groove. The first oil groove is communicated with the second oil groove.

7. The engine bracket assembly according to claim 6, characterized in that: The first oil groove is provided on the inner wall surface of the bushing. The second oil groove is provided on the inner wall surface of the through hole of the lower bracket. An oil hole communicating the first oil groove and the second oil groove is provided on the bushing.

8. The engine bracket assembly according to claim 7, characterized in that: The first oil groove includes a radial oil groove arranged radially and an axial oil groove arranged axially, and the radial oil groove and the axial oil groove are communicated with each other.

9. The engine bracket assembly according to claim 4, characterized in that: The fixing pin has opposite first end and second end. The first end has a stop ring, and the diameter of the stop ring is greater than the diameter of the fixing pin body. A clamping groove is provided at the second end of the fixing pin, and the clamping groove is located on one side of the circumferential surface of the fixing pin. The fixing pin passes through the through holes of the upper bracket and the lower bracket. The stop ring is attached to the outer side of the ear plate on one side of the upper bracket. A baffle is installed in the clamping groove of the fixing pin, and the baffle is attached to the outer side of the ear plate on the other side of the upper bracket.

10. A three-point support structure for supporting an engine, characterized in that: The three-point support structure includes a rear bracket and the engine bracket assembly according to any one of claims 1-9. There are two rear brackets, and the two rear brackets are respectively located on both sides of the rear end of the engine. There is one bracket assembly, which is located in the middle of the front end of the engine.

Images