Engine

Abstract

The engine comprises an engine body, a cylinder cover, a cylinder cover mounting frame and a post-processing device, the cylinder cover is arranged at the top end of the engine body, the cylinder cover is arranged on the cylinder cover, the cylinder cover comprises a cover body and a mounting flange located on the peripheral side of the bottom of the cover body, and a vertically-penetrating through hole is formed in the mounting flange. The mounting frame comprises a plurality of supporting columns fixed to the cylinder cover and a mounting plate fixed to the supporting columns, the bottom ends of the supporting columns penetrate through through holes in the mounting flange and then stretch into the cylinder cover to be fixed to the cylinder cover, the cylinder cover is pressed and fixed to the cylinder cover through the supporting columns, and the post-processing device is fixed to the mounting plate. According to the utility model, the post-processing device is fixed on the cylinder cover by adopting the mounting frame, so that the post-processing device is arranged in the tractor hood, and the driving visual field of a driver is widened; the mounting frame formed by the supporting columns, the transverse supporting pieces, the supporting plates and the mounting plates has excellent structural strength and bearing capacity, so that the mounting stability of the post-processing device is greatly guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an engine with a post-treatment device mounted on top. Background Art

[0002] In the prior art, with the upgrading of emission regulations, the post-treatment system has become a standard configuration for tractors with a power of more than 50 horsepower. However, for small tractors, due to the size limit of the tractors, the newly added post-treatment system has a certain impact on the vision of tractor drivers. Therefore, installing the post-treatment inside the whole vehicle hood has become an effective solution. How to effectively and reliably install the post-treatment in the hood is a technical problem that needs to be solved urgently. At the same time, for tractors, the most effective layout plan for installing the post-treatment inside the hood is to install the post-treatment above the engine. Since there are accessories such as a cylinder head cover and an injector above the engine, it is necessary to avoid complex parts. Therefore, it is necessary to simply install the post-treatment device above the engine body and save the installation space. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an engine.

[0004] According to one aspect of the utility model, there is provided an engine, comprising:

[0005] A body,

[0006] A cylinder head, which is arranged at the top of the body;

[0007] A cylinder head cover, which is arranged on the cylinder head. The cylinder head cover comprises a cover body and an installation flange located on the circumferential side of the bottom of the cover body. A vertically penetrating through-hole is formed on the installation flange;

[0008] An installation frame, which comprises a plurality of struts fixed on the cylinder head and an installation plate fixed to the plurality of struts. The bottom ends of the struts pass through the through-holes on the installation flange and extend into the cylinder head to be fixed to the cylinder head. The struts press and fix the cylinder head cover on the cylinder head;

[0009] A post-treatment device, which is fixed on the installation plate.

[0010] Preferably, the installation frame further comprises a support plate fixed to the cylinder head. The support plate is arranged on the side where the flywheel of the engine is located. The bottom of the support plate is fixed to the cylinder head, and the top of the support plate is connected to the installation plate.

[0011] Preferably, a transverse support member is arranged between adjacent struts on the same side. The two ends of the transverse support member are respectively fixed to the adjacent two struts.

[0012] Preferably, the lateral support member includes a support body and locking rings located at both ends of the support body. The locking ring includes an arc segment connected to the support body and a straight end located at the end of the arc segment. The arc segment is sleeved on the support column, and the straight segment is locked on the support body through bolts, thereby locking and fixing the locking ring on the support column.

[0013] Preferably, the support column includes a support portion and a screw portion located below the support portion. The diameter of the screw portion is smaller than that of the support portion, and a stepped surface is formed between the screw portion and the support portion for pressing the cylinder head cover.

[0014] Preferably, a threaded hole is axially opened downward at the top of the support portion, and the mounting plate is fixed to the top of the support portion through bolts.

[0015] Preferably, while the screw portion passes through the through hole on the mounting flange and is fixed to the cylinder head, it is pressed against the mounting flange through the stepped surface to connect the cylinder head cover and the cylinder head together.

[0016] Preferably, the cover body is provided with an avoidance groove for avoiding the support column corresponding to the through hole. The avoidance groove extends along the axial direction of the support column and is recessed in the direction radially outward of the support column.

[0017] Preferably, the support plate includes a vertical plate fixed to the cylinder head and a horizontal plate bent from the top of the vertical plate toward the side where the cylinder head is located. The horizontal plate is fixed to the mounting plate.

[0018] Preferably, a lifting lug is provided on one side of the support plate, and a weight reduction opening is provided in the middle of the support plate.

[0019] Preferably, the support portion is provided in a cylindrical shape, and parallel clamping surfaces are symmetrically provided on the outer surface of the support portion for clamping by a wrench to twist the support column.

[0020] Preferably, it further includes a flywheel housing. The flywheel housing is fixed to one side of the engine block. A fixing bracket for installing the air spring of the tractor hood is provided above the flywheel housing. The bottom of the fixing bracket is fixed to the flywheel housing, and the middle is fixed to the support plate.

[0021] Compared with the prior art, the engine provided by the present utility model has the following beneficial effects:

[0022] Due to the adoption of the above technical solutions, the present utility model has the advantages of simple structure, ingenious design, and low cost. The aftertreatment device is fixed to the cylinder head by using a mounting bracket, so that the aftertreatment device is built into the tractor hood, thereby broadening the driving vision of the driver; the mounting bracket composed of the support column, the lateral support member, the support plate, and the mounting plate has excellent structural strength and load-bearing capacity, greatly ensuring the installation stability of the aftertreatment device, effectively ensuring the reliability of the aftertreatment system during use, and at the same time saving installation space; the support columns are connected by lateral tie rods to form a frame structure to ensure the strength of the support. Brief Description of the Drawings

[0023] The following further describes the present utility model in detail with reference to the drawings and specific embodiments:

[0024] Figure 1 It is a schematic diagram of the engine of the present utility model installed in a tractor;

[0025] Figure 2 It is a perspective view of the engine of the present utility model;

[0026] Figure 3 It is a partial perspective view of the engine of the present utility model;

[0027] Figure 4 It is a top view of the cylinder head cover of the present utility model;

[0028] Figure 5 It is a perspective view of the support pillar of the present utility model Figure 1 ;

[0029] Figure 6 It is a perspective view of the support pillar of the present utility model Figure 2 ;

[0030] Figure 7 It is a perspective view of the transverse support member of the present utility model;

[0031] Figure 8 It is a perspective view of the support plate of the present utility model;

[0032] Figure 9 It is a perspective view of the fixing bracket of the present utility model.

[0033] Wherein, 100. tractor, 1001. hood, 1002. gas spring, 1003. engine, 1. body, 2. cylinder head, 3. cylinder head cover, 31. cover body, 311. avoidance groove, 32. mounting flange, 321. through hole, 4. flywheel housing, 5. gear chamber cover, 6. cooling fan, 7. mounting bracket, 71. support pillar, 711. support part, 7111. clamping surface, 712. screw part, 713. step surface, 714. threaded hole, 72. mounting plate, 73. transverse support member, 731. support body, 732. lock ring, 7321. arc segment, 7322. straight segment, 74. support plate, 741. vertical plate, 7411. lifting lug, 7412. weight reduction opening, 742. horizontal plate, 8. aftertreatment device, 9. fixing bracket, 91. main frame, 92. connecting arm. Specific Embodiments

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] 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 drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0036] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] See also Figure 1, this embodiment discloses an engine, which is installed in the hood at the front end of a tractor and includes a cylinder block 1, a cylinder head 2, a cylinder head cover 3, a flywheel housing 4, a gear chamber cover 5, a cooling fan 6, a mounting bracket 7, and an aftertreatment device 8. The cylinder head 2 is disposed at the top of the cylinder block 1, and the cylinder head cover 3 is disposed on the cylinder head 2. The flywheel housing 4 and the gear chamber cover 5 are disposed on opposite sides of the cylinder block 1, and the cooling fan 6 is disposed on the side where the gear chamber cover 5 is located and above the gear chamber cover 5. The aftertreatment device 8 is fixed above the cylinder head cover 3 through the mounting bracket 7.

[0041] See Figure 2 , the cylinder head cover 3 includes a cover body 31 and a mounting flange 32 located on the circumferential side of the bottom of the cover body 31. A vertically penetrating through-hole 321 is formed in the mounting flange 32. The through-hole 321 is correspondingly arranged with a threaded hole (not marked in the figure) on the cylinder head 2 for the installation and fixation of the cylinder head cover 3.

[0042] See Figure 5 and Figure 6 , the mounting bracket 7 includes a plurality of struts 71 fixed on the cylinder head 2 and a mounting plate 72 fixed to the plurality of struts 71. The strut 71 includes a support portion 711 and a screw portion 712 located at the bottom end of the support portion 711. The diameter of the screw portion 712 is smaller than that of the support portion 711, and a stepped surface 713 is formed between the screw portion 712 and the support portion 711. The stepped surface 713 is a pressing surface where the strut 71 contacts the cylinder head cover 3. While the screw portion 712 passes through the through-hole 321 in the mounting flange 32 and is fixed to the cylinder head 2, the cylinder head cover 3 is connected to the cylinder head 2 by being pressed against the mounting flange 32 through the stepped surface 713.

[0043] In this embodiment, the support portion 711 is provided in a cylindrical shape, and clamping surfaces 7111 parallel to each other are symmetrically provided on the outer surface of the support portion 711 for clamping by a wrench to screw and fix the strut 71 to the cylinder head 2 or disassemble it from the cylinder head 2. The struts 71 are respectively located on the exhaust side and the intake side of the engine and are distributed along the length direction of the cylinder head cover 3. A transverse support member 73 is provided between adjacent struts 71 on the same side, and both ends of the transverse support member 73 are respectively fixed to the adjacent two struts 71.

[0044] See Figure 7, the lateral support member 73 includes a laterally extending support body 731 and locking rings 732 located at both ends of the support body 731. The locking ring 732 includes an arc segment 7321 connected to the support body 731 and a straight segment 7322 located at the end of the arc segment 7321. During installation, the arc segment 7321 is sleeved on the support column 71. By passing a bolt through the straight segment 7322 and the support body 731, while locking the straight segment 7322 to the support body 731, the arc segment 7321 is also clamped onto the support portion 711, thereby locking and fixing the locking ring 732 to the support portion 711. In the normal state, the support column 71 only receives axial force. At this time, the lateral support member 73 is in an unloaded state. When the support column 71 receives force in other directions, the lateral support member 73 will be stressed and tightened, and the force received will be transmitted by the lateral support member 73 and evenly distributed on each support column 71, ensuring the overall stability and support strength of the mounting frame 7, and effectively guaranteeing the installation reliability of the post-treatment device 8 during use.

[0045] In other embodiments, the outer surface of the support portion 711 can be set as a hexagonal surface, that is, the cross-section of the support portion 711 is a hexagon. At this time, there is no need to additionally provide a clamping surface 7111, and any two opposite surfaces in the hexagonal surface can be used as the clamping surface 7111. However, if the lateral support member 73 needs to be installed at this time, a cylindrical outer surface needs to be machined on the surface of the support portion 711 for the locking ring 732 to be sleeved and locked and fixed.

[0046] See Figure 6 , a threaded hole 714 is axially opened downward along the top of the support portion 711, and the mounting plate 72 is fixed to the top of the support portion 711 by bolts. The bolts pass through the mounting plate 72 and are tightened into the threaded hole 714, thereby fixing the mounting plate 72 and the support column 71 together. The post-treatment device 8 is fixed to the mounting plate 72.

[0047] See Figure 4 , a relief groove 311 for avoiding the support portion 711 is provided on the cover body 31 corresponding to the through hole 321. The relief groove 311 extends along the axis direction of the support column 71 and is recessed in the direction radially outward of the support column 71.

[0048] See Figure 8 , the mounting frame 7 in this embodiment further includes a support plate 74 fixed to the cylinder head 2, and the support plate 74 is arranged on the side where the flywheel housing 4 of the engine is located. The bottom of the support plate 74 is fixed to the cylinder head 2, and the top of the support plate 74 is connected to the mounting plate 72. The support plate 74 includes a vertical plate 741 fixed to the cylinder head 2 and a horizontal plate 742 bent from the top of the vertical plate 741 toward the side where the cylinder head 2 is located, and the horizontal plate 742 is fixed to the mounting plate 72. A lifting lug 7411 is provided on one side of the vertical plate 741, and a weight reduction opening 7412 is provided in the middle of the vertical plate 741.

[0049] See Figure 9 Above the flywheel housing 4, there is a fixing bracket 9 for installing the gas spring of the front hood of the tractor. The fixing bracket 9 includes a main body frame 91 and connecting arms 92 extending from both sides of the main body frame 91 towards the side where the cooling fan 6 is located. The bottom of the main body frame 91 is fixed to the flywheel housing 4, and the middle part is fixed to the support plate 74. One end of the gas spring of the hood is rotatably connected to the inside of the tractor hood, and the other end is rotatably connected to the connecting arm 92.

[0050] It will be apparent to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention falling within the scope of the appended claims and their equivalent technical solutions.

Claims

1. An engine, characterized in that: include: Body, A cylinder head, which is arranged on the top of the engine body; The cylinder head cover is arranged on the cylinder head, and comprises a cover body and a mounting flange located at the bottom peripheral side of the cover body, and a vertical through hole is opened on the mounting flange; A mounting frame, the mounting frame includes a plurality of pillars fixed on the cylinder head and a mounting plate fixed to the plurality of pillars, the bottom ends of the pillars pass through the through holes on the mounting flange and extend into the cylinder head to be fixed to the cylinder head, and the pillars press and fix the cylinder head cover on the cylinder head; A post-processing device is fixed on the mounting plate.

2. The engine according to claim 1, characterized in that The mounting frame also includes a support plate fixed to the cylinder head. The support plate is arranged on the side where the flywheel of the engine is located. The bottom of the support plate is fixed to the cylinder head, and the top of the support plate is connected to the mounting plate.

3. The engine according to claim 1, characterized in that A transverse support member is provided between adjacent pillars on the same side, and two ends of the transverse support member are respectively fixed to two adjacent pillars.

4. The engine according to claim 3, characterized in that The transverse support member includes a support body and locking rings located at both ends of the support body. The locking ring includes an arc segment connected to the support body and a straight end located at the end of the arc segment. The arc segment is sleeved on the pillar and the straight segment is locked on the support body by bolts, thereby locking the locking ring on the pillar.

5. The engine according to claim 2, characterized in that The support comprises a supporting portion and a screw portion located below the supporting portion. The diameter of the screw portion is smaller than the diameter of the supporting portion, and a step surface is formed between the screw portion and the supporting portion for pressing the cylinder head cover.

6. The engine according to claim 3, characterized in that A threaded hole is provided on the top of the support portion axially downward, and the mounting plate is fixed to the top of the support portion by bolts.

7. The engine according to claim 4, characterized in that The screw rod part is fixed on the cylinder head through the through hole on the mounting flange, and at the same time, the cylinder head cover is connected to the cylinder head by pressing on the mounting flange through the step surface.

8. The engine according to claim 5, characterized in that An escape groove for evading the pillar is arranged at a position corresponding to the through hole of the cover body. The escape groove extends along the axial direction of the pillar and is recessed in a radially outward direction of the pillar.

9. The engine according to claim 2, characterized in that The supporting plate comprises a vertical plate fixed to the cylinder head and a horizontal plate bent from the top of the vertical plate to the side where the cylinder head is located, and the horizontal plate is fixed to the mounting plate.

10. The engine according to claim 7, characterized in that A lifting lug is arranged on one side of the support plate, and a weight-reducing opening is opened in the middle of the support plate.

11. The engine according to claim 3, characterized in that The support part is arranged in a cylindrical shape, and the outer surface of the support part is symmetrically provided with mutually parallel clamping surfaces for clamping with a wrench to twist the support column.

12. The engine according to claim 2, characterized in that It also includes a flywheel housing, which is fixed to one side of the machine body. A fixing frame for installing a tractor hood gas spring is provided above the flywheel housing, the bottom of the fixing frame is fixed to the flywheel housing, and the middle part is fixed to the support plate.

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