CN207761762U - A kind of engine - Google Patents

Abstract

The utility model relates to the field of engines, and specifically discloses an engine, which includes an engine body and a fixed bracket fixed to the engine body. The fixed bracket includes a bracket body with one end fixed to the engine body, a clamp connected to the other end of the bracket body, and The shock absorbing device arranged on the bracket body; the hoop is used to clamp the SCR box. The utility model utilizes the reserved hole on the engine and the unused space above the engine to provide an installation space for the SCR box, fix the SCR box on the engine through a fixed bracket, and can solve the problem of the SCR box after adopting a new exhaust emission scheme. The problem that it cannot be arranged on the frame of the whole vehicle. At the same time, it ensures that the vibration of the engine will not affect the work of the SCR box; it improves the adaptability of the engine in different industries, ensures that the exhaust emissions of construction machinery vehicles can meet the National IV emission standards, and reduces the design cost of the vehicle; and through setting the shock absorber The device reduces the impact of vibration on the SCR box during engine operation.

Description

an engine

technical field

The utility model relates to the field of engines, in particular to an engine.

Background technique

In order to reduce the impact of exhaust emissions from construction machinery vehicles and heavy-duty vehicles on air pollution, the exhaust emissions of construction machinery vehicles and heavy-duty vehicles must meet the National IV emission standards.

At present, the exhaust gas treatment scheme of the engine generally adopts electronically controlled high-pressure common rail, supercharged intercooler and SCR post-treatment. The SCR post-processing system adopts the SCR post-processing system of the road motor vehicle, and the SCR box of the SCR post-processing system in the structure of the road motor vehicle is arranged on the vehicle frame. Due to the adoption of the above-mentioned new exhaust emission scheme for construction machinery vehicles and heavy vehicles, the space structure of the vehicle is limited by the space structure of the vehicle, and the SCR box cannot be arranged on the frame of the vehicle.

Utility model content

The purpose of the utility model is to provide an engine, which can solve the problem that the SCR box cannot be arranged on the frame of the vehicle due to the limitation of the space structure of the vehicle after adopting a new exhaust emission scheme for engineering machinery vehicles and heavy vehicles.

For this purpose, the utility model adopts the following technical solutions:

An engine, including an engine body, and a fixed bracket fixed to the engine body, the fixed bracket includes a bracket body with one end fixed to the engine body, a clamp connected to the other end of the bracket body, and a shock absorber arranged on the bracket body; Clamps are used to fasten the SCR box.

Further, the bracket body includes a first bracket connected to the clamp, and a second bracket connected to the first bracket and fixed to the body of the engine body.

Further, the first bracket is located between the clamp and the second bracket, and the shock absorbing device is provided at the connection position between the first bracket and the second bracket.

Further, the clamp is connected to the first bracket through a pin shaft.

Further, the second bracket includes a first connecting plate, and a second connecting plate perpendicular to the first connecting plate, one side of the first connecting plate is connected to the first bracket, and the first connecting plate The second connecting plate is connected to the other side of the first connecting plate;

The first connecting plate and the second connecting plate are respectively provided with a first connecting hole and a second connecting hole; the central axis of the first connecting hole is perpendicular to the central axis of the second connecting hole;

A first reserved hole is provided on the body of the engine body corresponding to the first connecting hole and the second connecting hole.

Further, one end of the bracket body is fixed on the cylinder head of the engine body, and the other end is connected to the clamp; the bracket body is connected to one side of the cylinder head of the engine body and connected to the clamp The damping device is provided on one side.

Further, the bracket body includes a third connecting plate connected to the cylinder head of the engine body, a fixing frame for fixing the hoop, and a support plate connecting the third connecting plate and the fixing frame.

Further, the third connecting plate is connected to the cylinder head of the engine body through a fastening structure; the shock absorbing device is connected to the third connecting plate through the fastening structure.

Further, the fastening structure includes a first fastening component, the first fastening component includes a third screw and a fourth screw connected to the cylinder head of the engine body, the first fastening component of the first fastening component Three screws pass through the damping device and the third connecting plate and are screwed to one end of the fourth screw, and the other end of the fourth screw is connected to the cylinder head of the engine body.

Further, the fastening structure further includes a second fastening assembly, the second fastening assembly includes a third screw and an L-shaped connector, and the third screw of the second fastening assembly passes through the shock absorbing device and the third connecting plate And screwed to one end of the L-shaped connector, the other end of the L-shaped connector is connected to the cylinder head of the engine body.

Further, the fixed frame includes a fixed plate connected to the supporting plate on one side, and a sleeve frame arranged on the other side of the fixed plate, and the SCR box is supported by the sleeve frame; the clamp passes through the corresponding The sleeve frame is arranged close to the SCR box, and the SCR box is sandwiched between the clamp and the sleeve frame.

Further, an arc-shaped plate supporting the SCR box is provided on the sleeve frame.

Beneficial effects of the utility model: the utility model utilizes the reserved hole on the engine and the unused space above the engine to provide an installation space for the SCR box, fix the SCR box on the engine through the fixing bracket, and solve the problem of adopting a The problem that the SCR box cannot be arranged on the frame of the whole vehicle after the exhaust emission scheme is adopted; and the impact of the vibration of the engine on the SCR box is reduced by setting a shock absorbing device.

Description of drawings

Fig. 1 is a schematic structural view of the fixing bracket described in Embodiment 1 of the present utility model;

Fig. 2 is a structural schematic diagram of another viewing angle of the fixing bracket according to Embodiment 1 of the present utility model;

Fig. 3 is a schematic structural view of the second bracket described in Embodiment 1 of the present invention;

Fig. 4 is a schematic structural view of the protection plate described in Embodiment 1 of the present utility model;

Fig. 5 is a schematic structural view of the fixing bracket described in the second embodiment of the utility model;

Fig. 6 is a structural schematic diagram of another viewing angle of the fixing bracket according to the second embodiment of the present invention;

Fig. 7 is a diagram of the connection relationship between the protective plate, the third connecting plate and the second shock pad according to the second embodiment of the present invention;

Fig. 8 is a schematic structural view of the fixing frame according to the second embodiment of the present invention.

In the picture:

1. Bracket body; 11. First bracket; 111. U-shaped mounting plate; 112. Mounting vertical plate; 12. Second bracket; 121. First connecting plate; 1211. Fourth connecting hole; 122. Second connecting plate ; 123, reinforcing rib; 13, the third connecting plate; 131, the fifth connecting hole; 14, fixed frame; 141, fixed plate; 142, sleeve frame; 1421, the first fixed plate; 1423, curved plate; 15, support plate;

2, clamp; 21, clamp belt; 31, the first shock pad; 32, the second shock pad; 41, the first pin; 42, the second pin;

10. The first screw; 20. The second screw; 30. Bolt; 40. The third screw; 50. L-shaped connector; 501. The sixth connection hole; 60. The fourth screw; 5. The protective plate; 51. The first A protective plate; 52, the second protective plate.

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

The utility model provides an engine, comprising an engine body, and a fixed bracket fixed on the engine body, the fixed bracket includes a bracket body 1 with one end fixed to the engine body, a clamp 2 connected to the other end of the bracket body 1, and a The shock absorbing device on the bracket body 1; the clamp 2 is used to clamp the SCR box.

The utility model utilizes the reserved hole on the engine and the unused space above the engine to provide an installation space for the SCR box. The SCR box is fixed on the engine through a fixed bracket, which can solve the problem of SCR after adopting a new exhaust emission scheme. The box cannot be arranged on the frame of the whole vehicle; and the impact of the vibration of the engine on the SCR box is reduced by setting a shock absorbing device.

Embodiment one

This embodiment takes the engine of the WP9H model as an example. The engine of the WP9H model is the engine body referred to in this embodiment. There are six first reserved holes on the body of the engine body of the WP9H model, which are respectively located on the body of the engine body. The top wall and side wall of the engine body, the present embodiment utilizes the above-mentioned six first reserved holes on the body of the engine body to fix the SCR box on the body of the engine body. The structure of the fixing bracket and the connection between the engine body and the fixing bracket in this embodiment will be described in detail below.

As shown in FIG. 1 , the bracket body 1 includes a first bracket 11 connected to the clamp 2 , and a second bracket 12 connected to the first bracket 11 and fixed on the body of the engine body.

As shown in Figure 2, the first bracket 11 is located between the clamp 2 and the second bracket 12, the first bracket 11 specifically includes a U-shaped mounting plate 111, located inside the U-shaped mounting plate 111 and parallel to the The two installation risers 112 on the side wall of the U-shaped installation plate 111 are symmetrically distributed with respect to the U-shaped installation plate 111 . The end face of the one end of the mounting riser 112 away from the bottom wall of the U-shaped mounting plate 111 and the end face of the side wall of the U-shaped mounting plate 111 away from the end of the bottom wall of the U-shaped mounting plate 111 are provided with A curved surface supporting the SCR case.

The SCR case is supported by the arc surfaces on the two side walls of the U-shaped installation plate 111 and the arc surfaces on the two installation risers 112 .

There are two clamps 2 in this embodiment, and each clamp 2 includes two clamp bands 21, and one end of the two clamp bands 21 of one clamp 2 is respectively installed through the first pin shaft 41 Between one side wall of the U-shaped mounting plate 111 and the mounting riser 112 close to the side wall, the other end is connected by a second pin 42 . One end of the two clamp bands 21 of the other clamp 2 is installed between the other side wall of the U-shaped mounting plate 111 and the installation vertical plate 112 close to the side wall through the first pin shaft 41. One end is connected by a second pin shaft 42 . The SCR case is sandwiched between the clips 2 and the first bracket 11 by two clips 2 .

As shown in Figure 3, the second bracket 12 includes a first connecting plate 121, and a second connecting plate 122 perpendicular to the first connecting plate 121, one side of the first connecting plate 121 is connected to the The first bracket 11 is described above, and the second connecting plate 122 is connected to the other side of the first connecting plate 121 .

The position corresponding to the first reserved hole on the top wall of the body of the engine body on the first connecting plate 121 is provided with a first connecting hole; on the second connecting plate 122 and on the side wall of the body of the engine body The position corresponding to the first reserved hole is provided with a second connecting hole; the central axis of the first connecting hole is perpendicular to the central axis of the second connecting hole. The first screw 10 passes through the first connection hole and is screwed into the first reserved hole on the top wall of the body of the engine body; the second screw 20 passes through the second connection hole and is screwed into the upper side of the body of the engine body In the first reserved hole on the wall, the second bracket 12 is then fixed on the body of the engine body. In this embodiment, there are three first connection holes and three second connection holes respectively.

A reinforcing rib 123 is provided at the connecting position of the second connecting plate 122 and the first connecting plate 121 for improving the connection strength of the first connecting plate 121 and the second connecting plate 122 .

Since the engine is one of the main vibration sources of construction machinery vehicles, in order to reduce the impact of engine vibration on the SCR box, in this embodiment, the side where the first bracket 11 is connected to the clamp 2 and the side where the second bracket 12 is connected The shock absorbing device is provided on one side, and the shock absorbing device is a first shock absorbing pad 31 .

As shown in Figures 1 and 2, the two side walls of the U-shaped mounting plate 111 and the mounting risers 112 close to the corresponding side walls form a U-shaped cavity, and the bottom wall in each of the U-shaped cavity is set There are two third connection holes (not shown in the figure). As shown in FIG. 3 , a fourth connection hole 1211 is provided on the first connection plate 121 at a position corresponding to the third connection hole. As shown in FIG. 2 , the bolts 30 pass through the first shock pad 31 on one side of the first bracket 11 , the third connection hole, the first shock pad 31 on the other side of the first bracket 11 and the fourth connection hole 1211 in sequence. And fastened by nuts to realize the connection between the first bracket 11 and the second bracket 12 .

In this embodiment, since the axes of the first connection hole and the second connection hole are located in different directions, it is necessary to design the bracket body 1 as a combined structure of two brackets, that is, the first bracket 11 and the second bracket 12. The impact of small engine vibrations on the SCR box.

As shown in Figure 2 and Figure 4, in this embodiment, a protective plate 5 is provided between the first shock absorbing pad 31 on one side of the first bracket 11 and the nut of the bolt 30; The protective plate 5 is a T-shaped structure, including a first protective plate 51 and a second protective plate 52 vertically connected to the first protective plate 51 . The second protective plate 52 is arranged through the first shock-absorbing pad 31, and the first protective plate 51 is pressed against the first shock-absorbing pad 31; it can make the first shock-absorbing pad 31 evenly bear pressure, It plays the role of protecting the first shock absorbing pad 31, preventing the first shock absorbing pad 31 from being invalidated because it has been in a squeezed state. By setting the protective plate 5, the first shock absorbing pad 31 can only Only then will it work, prolonging the service life of the first shock pad 31.

The protective plate 5 is also provided between the first shock absorbing pad 31 on the other side of the first bracket 11 and the second bracket 12 .

Embodiment two

This embodiment takes the engine of the WP6 model as an example. The engine of the WP6 model is the engine body referred to in this embodiment. There are four second reserved holes on the cylinder head of the engine body of the WP6 model. The engine described in this embodiment The SCR box is fixed on the cylinder head of the engine body by utilizing the above-mentioned four second reserved holes on the cylinder head of the engine body. The structure of the fixing bracket and the connection between the engine body and the fixing bracket in this embodiment will be described in detail below.

As shown in Figure 5, the bracket body 1 in this embodiment includes a third connecting plate 13 connecting the cylinder head of the engine body, a fixing frame 14 for fixing the clamp 2, and connecting the third connecting plate 13 and the supporting plate 15 of the fixing frame 14 .

There are two supporting plates 15 in this embodiment, the two supporting plates 15 are distributed in parallel and vertically connected to the third connecting plate 13, and the two supporting plates 15 and the third connecting plate 13 form a U Cavity, the part of the third connecting plate 13 located in the U-shaped cavity is provided with a through hole for avoiding parts on the cylinder head of the engine body. As shown in FIG. 7 , two fifth connecting holes 131 are respectively provided on both sides of the third connecting plate 13 outside the U-shaped cavity.

As shown in Figures 6 and 7, the side of the bracket body 1 connected to the cylinder head of the engine body and the side connected to the hoop 2 are provided with the shock absorbing device, and the shock absorbing device It is the second shock pad 32. Specifically, the second shock absorbing pad 32 is located on both sides of the third connecting plate 13 in the thickness direction. In order to protect the second shock absorbing pad 32, the end of the second shock absorbing pad 32 away from the second connecting plate 122 is respectively provided with a protective plate 5, and the structure of the protective plate 5 is the same as that of the first embodiment, which is not mentioned here. Let me tell you more.

As shown in FIG. 7 , the third connecting plate 13 is connected to the cylinder head of the engine body through a fastening structure; the shock absorbing device is connected to the third connecting plate 13 through the fastening structure. Specifically, the fastening structure includes a first fastening assembly and a second fastening member, the first fastening assembly includes a third screw 40 and a fourth screw 60 connected to the cylinder head of the engine body, through One end of the third screw 40 passes through the protective plate 5 on one side of the third connecting plate 13, the fifth connecting hole 131 on the third connecting plate 13 and the protective plate 5 on the other side of the third connecting plate 13, and Threadedly connected to one end of the fourth screw 60, so that the end face of the fourth screw 60 is pressed against the protective plate 5, and the other end of the fourth screw 60 is directly screwed into the corresponding second reserved portion on the cylinder head of the engine body. inside the hole. The two fifth connecting holes 131 on the connecting plate 13 are connected to the corresponding second reserved holes on the cylinder head of the engine body through a first fastening assembly.

The second fastening assembly includes a third screw 40 and an L-shaped connector 50. In order to avoid parts on the cylinder head of the engine body, the other two fifth connecting holes 131 are connected to the engine through the second fastening assembly. Corresponding second reserved holes on the cylinder head of the body. Specifically, the third screw 40 of the second fastening assembly passes through the shock absorbing device and the third connecting plate 13 and is screwed to one end of the L-shaped connector 50, and the other end of the L-shaped connector 50 is connected to The cylinder head of the engine block.

One end of the third screw 40 passes through the protective plate 5 on one side of the third connecting plate 13, the fifth connecting hole 131 on the third connecting plate 13 and the protective plate 5 on the other side of the third connecting plate 13, And screwed to one end of the L-shaped connecting piece 50 , so that the end surface of one end of the L-shaped connecting piece 50 presses against the protective plate 5 . As shown in Figure 5, the other end of the L-shaped connector 50 is provided with a sixth connecting hole 501, through which the fifth screw (not shown) passes through the sixth connecting hole 501 and is screwed into the cylinder head of the engine body corresponding to the second reserved hole.

As for which two third screws 40 of the fifth connecting holes 131 are connected to the L-shaped connecting member 50, it is determined according to the position of the parts that need to be avoided on the cylinder head of the engine body.

As shown in FIGS. 6 and 8 , the fixed frame 14 includes a fixed plate 141 that is connected to the support plate 15 on one side, and two sleeve frames 142 that are arranged on the other side of the fixed plate 141 and that are symmetrically distributed with respect to the fixed plate 141 , the SCR box is supported by two sets of racks 142 . There are two clamps 2, each clamp 2 passes through the corresponding sleeve frame 142 and is placed close to the SCR box, and the SCR box is sandwiched between the clamp 2 and the sleeve. Set up between 142.

Two said sleeve racks 142 are respectively arranged on the two ends of said fixed plate 141 length direction (L direction among Fig. 8); Two first fixed plates 1421 distributed in the W direction) and spaced apart, and a second fixed plate 1422 distributed along the width direction of the fixed plate 141 and arranged parallel to the first fixed plate 1421; 142, the first fixed plate 1421 and the second fixed plate 1422 located at the same end in the width direction of the fixed plate 141 are oppositely arranged; Another side of the sleeve frame 142 .

The sleeve frame 142 also includes an arc-shaped plate 1423 supported by two first fixing plates 1421 and two second fixing plates 1422; the arc-shaped plate 1423 is used to support the SCR box. After passing one end of the clamp 2 through the cavity surrounded by the arc plate 1423, the two fixing plates 1421 and the two fixing plates 1422, the SCR box is placed behind the arc plates 1423 of the two sleeve racks 142, so that The part of the clamp 2 passing through the chamber is close to the arc plate 1423, and at the same time, the other part of the clamp 2 is close to the SCR box, and then the two ends of the opening of the clamp 2 are fastened through the pin shaft to achieve Fixing of SCR box.

When using the engine described in Embodiment 1 and Embodiment 2 to fix the SCR box, the structural modal calculation of the SCR box shows that the first-order modal frequency can reach more than 90.04Hz, the second-order modal frequency can reach more than 95.54Hz, and the third-order modal frequency can reach more than 95.54Hz. The modal frequency can reach above 103.7Hz; while the modal frequency of the SCR box is generally required to reach above 86Hz. When the engine of the utility model is used to fix the SCR box, the modal frequency of the SCR box fully meets the requirements, that is, through the shock isolation of the bracket body 1 of the utility model and the shock absorption of the shock absorber, the vibration of the engine will not It affects the work of the SCR box.

The utility model solves the problem that the SCR box cannot be arranged on the vehicle frame after adopting the new exhaust emission scheme, and at the same time ensures that the vibration of the engine of the utility model will not affect the work of the SCR box; The adaptability of products in different industries ensures that the exhaust emissions of construction machinery vehicles can meet the National IV emission standards and reduce the cost of vehicle design.

Also can the engine body in the engine described in the utility model also can adopt the engine of other models, only need to do corresponding modification to the concrete structure of fixing support according to engine model.

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (12)

1. A kind of engine, it is characterized in that, comprise engine body, and the fixed bracket that is fixed on described engine body, described fixed bracket comprises the bracket body (1) that is fixed on described engine body, is connected with described bracket body ( 1) the hoop (2), and the shock absorbing device provided on the bracket body (1); the hoop (2) is used to clamp the SCR box. 2. The engine according to claim 1, characterized in that, the bracket body (1) includes a first bracket (11) connected to the clip (2), and is connected to the first bracket (11) and The second bracket (12) fixed to the body of the engine body. 3. The engine according to claim 2, characterized in that, the first bracket (11) is located between the clip (2) and the second bracket (12), and the first bracket (11) and the second bracket (12) The connection position of the two brackets (12) is provided with the shock absorbing device. 4. The engine according to claim 3, characterized in that, the clamp (2) is connected to the first bracket (11) through a pin shaft. 5. The engine according to claim 3, characterized in that, the second bracket (12) comprises a first connecting plate (121), and a second connecting plate perpendicular to the first connecting plate (121) (122), one side of the first connecting plate (121) is connected to the first bracket (11), and the second connecting plate (122) is connected to the other side of the first connecting plate (121). side; The first connecting plate (121) and the second connecting plate (122) are respectively provided with a first connecting hole and a second connecting hole; the central axis of the first connecting hole is connected to the axis of the second connecting hole The central axis is vertical; A first reserved hole is provided on the body of the engine body corresponding to the first connecting hole and the second connecting hole. 6. The engine according to claim 1, characterized in that, the support body (1) is fixed on the cylinder head of the engine body; the position where the support body (1) is connected to the cylinder head of the engine body is provided with The shock absorber. 7. The engine according to claim 6, characterized in that, the bracket body (1) includes a third connecting plate (13) connecting the cylinder head of the engine body for fixing the clamp (2) frame (14), and a support plate (15) connecting the third connecting plate (13) and the fixing frame (14). 8. The engine according to claim 7, characterized in that, the third connecting plate (13) is connected to the cylinder head of the engine body through a fastening structure; the damping device is connected through the fastening structure connected to the third connecting plate (13). 9. The engine according to claim 8, characterized in that the fastening structure comprises a first fastening assembly comprising a third screw (40) and a cylinder connected to the engine block The fourth screw (60) of the cover, the third screw (40) of the first fastening assembly passes through the shock absorbing device and the third connecting plate (13) and is threadedly connected to one end of the fourth screw (60) , the other end of the fourth screw (60) is connected to the cylinder head of the engine body. 10. The engine according to claim 9, characterized in that, the fastening structure further comprises a second fastening assembly, the second fastening assembly includes a third screw (40) and an L-shaped connector (50), the first The third screw (40) of the two fastening components passes through the shock absorber and the third connecting plate (13) and is threaded on one end of the L-shaped connector (50), and the L-shaped connector (50) The other end is connected to the cylinder head of the engine body. 11. The engine according to claim 7, characterized in that, the fixed frame (14) comprises a fixed plate (141) connected to the support plate (15), and a sleeve frame (141) located on the fixed plate (141). 142); the clamp (2) is set through the corresponding sleeve frame (142). 12. The engine according to claim 11, characterized in that, the sleeve frame (142) is provided with an arc-shaped plate (1423) supporting the SCR box.