A non-road diesel engine aftertreatment mounting bracket structure

Abstract

A non-road diesel engine aftertreatment mounting bracket structure adopts a combination of an air-conditioning compressor bracket, a support bracket and a main body bracket, and adopts an integrated frame design and an "angle" structure for the main body bracket to ensure the strength and rigidity of the main body structure. The main body bracket adopts a main body semi-arch structure and a combination of a first through-vertical rib and a second through-vertical rib. With the support of the reinforcing ribs and through-ribs, a good overall force-bearing structure is formed. The accuracy of the bolt installation can be effectively guaranteed by coordinating and adjusting the air-conditioning compressor bracket, the second waist-shaped hole on the support bracket and the first waist-shaped hole on the main body bracket. The aftertreatment assembly is fixed to the main body bracket by a vibration damping block to prevent the bolts from loosening and breaking due to assembly problems. Experiments show that the implementation of the above scheme effectively avoids the phenomenon of damage to the main body bracket due to vibration problems during the operation of the whole machine.

Description

Technical Field

[0001] The invention belongs to the field of non-road internal combustion engines and relates to a non-road diesel engine after-treatment mounting bracket structure. Background Art

[0002] The diesel engine aftertreatment assembly is an important component of the diesel engine to meet higher emission requirements. It is used to transform and adsorb hydrocarbons, carbon monoxide, particulate matter, etc. in the diesel engine exhaust. In order to ensure the reliability of the diesel engine aftertreatment assembly, the design of the diesel engine aftertreatment device must be compact in structure, reasonable in layout, firm and reliable.

[0003] The traditional off-road diesel engine after-treatment assembly is arranged at the A-pillar position on the right side of the tractor it is matched with, and is an external one-line layout structure. In recent years, with the compact design of the hood structure of small and medium-power tractors, the matching machine field of view has also become more stringent, and new requirements have been put forward for the layout of its after-treatment assembly. The external one-line layout after-treatment assembly is changed to an internal one-line vertically placed above the engine. At present, the internal after-treatment device is mostly a welded steel plate structure, which is difficult to mass produce and process, has poor assembly consistency, and the steel plate structure has poor rigidity. It often fails to install or the assembly bolts are loose, and even bolts break during operation.

[0004] The National Intellectual Property Administration announced the authorization of the utility model patent "A split non-road diesel engine after-treatment device" on December 18, 2020. The patent number is: ZL 202020503304.0, the authorization announcement number is: CN212177263U; the application date is: 2020.04.09. This utility model relates to the field of diesel engine exhaust after-treatment equipment, specifically a split non-road diesel engine after-treatment device. It includes a diesel oxidation catalyst + diesel particulate filter packaging assembly and a selective catalytic reduction packaging assembly. The diesel oxidation catalyst + diesel particulate filter packaging assembly has a diesel oxidation catalyst assembly and a diesel particulate filter assembly that are detachably connected and communicated. The diesel oxidation catalyst assembly is connected to the diesel engine supercharger through an intake connecting pipe, and the diesel particulate filter assembly is connected to the selective catalytic reduction packaging assembly through a selective catalytic reduction connecting pipe. An exhaust tail pipe assembly is provided at the exhaust port sleeve of the selective catalytic reduction packaging assembly, and a urea nozzle protection mechanism is provided at a position of the selective catalytic reduction packaging assembly near the selective catalytic reduction connecting pipe. The utility model focuses on describing the structural composition and pipeline connection of the split non-road diesel engine aftertreatment device, but does not involve the bracket structure for installing these structures.

[0005] Therefore, it is particularly important to provide a non-road diesel engine aftertreatment mounting bracket structure with a compact structure, reasonable layout, firmness and reliability to solve the problems of difficulty in mass production and processing and poor assembly consistency. Summary of the invention

[0006] The purpose of the present invention is to provide a non-road diesel engine aftertreatment mounting bracket structure, which adopts the design concept of casting structure to facilitate mass production and processing. The reliability and stability of the bracket structure are ensured by the reasonable layout of the bracket structure, the design concept of waist-shaped holes and a reasonable assembly sequence. The bracket structure is designed with reinforcing ribs to ensure good rigidity and strength. The above-mentioned method satisfactorily solves the difficult problems existing in the prior art, such as the difficulty of mass production and processing, poor assembly consistency, poor rigidity of steel plate structure, and easy loosening and breaking of bolts.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a non-road diesel engine after-treatment mounting bracket structure, including: a cylinder head, bolts A, an air-conditioning compressor bracket, bolts B, a main body bracket, a vibration damping block, bolts C, a after-treatment assembly, a support bracket, bolts D, and bolts E; the air-conditioning compressor bracket is fixedly mounted on the cylinder head by bolts A, the support bracket is fixedly mounted on the cylinder head by bolts E, the main body bracket is fixedly mounted on the air-conditioning compressor bracket by bolts B and bolts D respectively, the support bracket fixes the diesel filter bracket and the hood bracket, and the bolts C fix the after-treatment assembly on the main body bracket through the vibration damping block.

[0008] The air conditioner compressor bracket is provided with a third threaded hole for fixing the main body bracket. The air conditioner compressor bracket is provided with a front lifting ear hole.

[0009] The main support adopts a semi-arch structure as the support body, and is designed with a first vertical rib and a second vertical rib that run through the front and back. The first reinforcing rib and the second reinforcing rib are added to the bottom of the main support, forming a "T-shaped" structure with the support body and the first vertical rib and the second vertical rib.

[0010] The fan end of the main frame is provided with two first waist-shaped holes; the main frame is provided with three weight-reducing holes. The fan end of the support frame is provided with two second waist-shaped holes, which can be adjusted in the up and down directions when assembling the connecting frame. The top surface of the support frame adopts a flat plate connection structure, which is connected to the right side plate and the left side plate to form a frame structure. The top of the support frame is provided with a tenth mounting surface for fixing the hood bracket.

[0011] The right side of the support bracket is provided with a rear lifting ear hole, the left side of the support bracket is provided with an eleventh mounting surface for fixing the diesel filter bracket, which is used to fix the diesel filter bracket, and the left and right sides of the support bracket are provided with arc avoidance holes.

[0012] By adopting the above-mentioned technical solution, the present invention can achieve the following beneficial effects:

[0013] From the perspective of practical use, the present invention adopts a combination of an air-conditioning compressor bracket, a support bracket and a main body bracket, and adopts an integrated framework design and an "angle" structure for the main body bracket to ensure the strength and rigidity of the main body structure. The main body bracket adopts a main body semi-arch structure and a combination of a first through vertical rib and a second through vertical rib, and with the support of the reinforcing ribs and through ribs, a good overall force-bearing structure is formed. Through the coordination and adjustment of the air-conditioning compressor bracket, the second waist-shaped hole on the support bracket and the first waist-shaped hole on the main body bracket, the accuracy of the bolt installation can be effectively guaranteed, and the problem of bolt breakage due to assembly tension can be prevented. Experiments have shown that through the implementation of the above scheme, the existing problems of mass production and processing difficulties, poor assembly consistency, poor rigidity of steel plate structures, bolt fracture, etc. can be well solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the assembly structure of a non-road diesel engine aftertreatment mounting bracket structure of the present invention;

[0015] Figure 2 It is a schematic structural diagram of a cylinder head fan end of a non-road diesel engine aftertreatment mounting bracket structure of the present invention;

[0016] Figure 3 It is a schematic diagram of the structure of the flywheel end of a cylinder head of a non-road diesel engine aftertreatment mounting bracket structure of the present invention;

[0017] Figure 4 A schematic diagram of an air-conditioning compressor bracket structure of a non-road diesel engine after-treatment mounting bracket structure of the present invention;

[0018] Figure 5 It is a schematic diagram of a main support structure of a non-road diesel engine after-treatment mounting support structure of the present invention viewed from above;

[0019] Figure 6 It is a bottom view structural schematic diagram of a main support of a non-road diesel engine after-treatment mounting support structure of the present invention;

[0020] Figure 7 It is a schematic diagram of the structure of a post-processing assembly of a non-road diesel engine post-processing mounting bracket structure of the present invention;

[0021] Figure 8 It is a structural schematic diagram of a fan end of a support bracket of a non-road diesel engine aftertreatment mounting bracket structure of the present invention;

[0022] Fig. 9 The present invention is a schematic diagram of the flywheel end structure of a support bracket of a non-road diesel engine after-treatment mounting bracket structure.

[0023] Markings in the figure: 1-cylinder head, 1.1-first threaded hole, 1.2-first mounting surface, 1.3-second mounting surface, 1.4-second threaded hole; 2-bolt A, 3-air conditioning compressor bracket, 3.1-third mounting surface, 3.2-first through hole, 3.3-fourth mounting surface, 3.4-third threaded hole, 3.5-front lifting ear hole, 4-bolt B, 5-main body bracket, 5.1-fifth mounting surface, 5.2-first waist-shaped hole, 5.3-sixth mounting surface, 5.4-fourth threaded hole, 5.5-seventh mounting surface, 5.6-fifth threaded hole, 5.7-weight reduction hole, 5.8-first reinforcement rib, 5 .9-first vertical rib running through, 5.10-second vertical rib running through, 5.11-second reinforcing rib, 5.12-sixth threaded hole, 6-vibration damping block, 7-bolt C, 8-post-processing assembly, 8.1-eighth mounting surface, 8.2-second through hole, 9-support bracket, 9.1-ninth mounting surface, 9.2-third through hole, 9.3-second waist-shaped hole, 9.4-tenth mounting surface, 9.5-eleventh mounting surface, 9.6-rear lifting ear hole, 9.7-right side plate, 9.8-left side plate, 9.9-oblique rib, 9.10-arc avoidance hole, 9.11-transverse rib, 10-bolt D, 11-bolt E. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figures 1 to 7 As shown, a non-road diesel engine aftertreatment mounting bracket structure includes: a cylinder head 1, bolts A2, an air conditioning compressor bracket 3, bolts B4, a main bracket 5, a vibration damping block 6, bolts C7, a aftertreatment assembly 8, a support bracket 9, bolts D10, and bolts E11; the air conditioning compressor bracket 3 is fixedly mounted on the cylinder head 1 through bolts A2, the support bracket 9 is fixedly mounted on the cylinder head 1 through bolts E11, the main bracket 5 is fixedly mounted on the air conditioning compressor bracket 3 through bolts B4 and bolts D10 respectively, and the support bracket 9 and bolts C7 fix the aftertreatment assembly 8 to the main bracket 5 through the vibration damping block 6. The support bracket 9 adopts an integrated frame design concept, and forms an "angle" structure centered on the bolt saddle through the arrangement of the right side plate 9.7, the left side plate 9.8, the transverse rib 9.11 and the oblique rib 9.9, thereby improving the structural strength and rigidity of the bracket.

[0026] The fan end surface of the support bracket 9 is provided with two second waist-shaped holes 9.3, which facilitates the vertical adjustment when assembling the connection bracket to prevent the bolts from loosening. The top surface of the support bracket 9 adopts a flat plate connection structure, which is connected with the right side plate 9.7 and the left side plate 9.8 to form a frame structure, further improving the overall strength of the bracket. The top of the support bracket 9 is provided with a tenth mounting surface 9.4 for fixing the hood bracket, which is convenient for matching use.

[0027] A rear lifting ear hole 9.6 is provided on the right side of the support bracket 9 for easy lifting. An eleventh mounting surface 9.5 for fixing the diesel filter bracket is provided on the left side of the support bracket 9 for fixing the diesel filter bracket to increase adaptability. Arc avoidance holes 9.10 are provided on the left and right sides of the support bracket 9 to prevent interference with surrounding parts, and the design is reasonable and ingenious.

[0028] The air conditioner compressor bracket 3 is provided with a third threaded hole 3.4 for fixing the main body bracket 5 on the basis of taking into account the installation of the air conditioner compressor bracket, saving bracket installation space. The air conditioner compressor bracket 3 is provided with a front lifting ear hole 3.5 for easy lifting.

[0029] The main support 5 innovatively borrows the principle of an arch bridge, adopts a semi-arch structure as the support body, and designs the first through-vertical rib 5.9 and the second through-vertical rib 5.10 that run through the front and back to ensure the connection strength. The first reinforcing rib 5.8 and the second reinforcing rib 5.11 are added to the bottom of the main support 5, forming a "T-shaped" structure with the support body and the first through-vertical rib 5.9 and the second through-vertical rib 5.10, further strengthening the support.

[0030] The fan end of the main support 5 is provided with two first waist-shaped holes 5.2, which are convenient for front-to-back adjustment when assembling the connecting support and prevent the bolts from loosening.

[0031] The main support 5 is provided with three weight-reducing holes 5.7, which can reduce weight and cost as much as possible under the premise that the support meets the requirements of use. The front end of the main support 5 is designed with a sixth threaded hole 5.12 for fixing the intercooler pipeline, which is used to fix the intercooler steel pipeline and increase the matching adaptability.

[0032] In this embodiment, the cylinder head 1 has four first threaded holes 1.1, one first mounting surface 1.2, three second mounting surfaces 1.3, and four second threaded holes 1.4.

[0033] The air-conditioning compressor bracket 3 has four third mounting surfaces 3.1, four first through holes 3.2, two fourth mounting surfaces 3.3, and two third threaded holes 3.4.

[0034] The main body bracket 5 has two fifth mounting surfaces 5.1, two first waist-shaped holes 5.2, four sixth mounting surfaces 5.3, four fourth threaded holes 5.4, two seventh mounting surfaces 5.5, two fifth threaded holes 5.6, three weight-reducing holes 5.7, a first reinforcing rib 5.8, a first through vertical rib 5.9, a second through vertical rib 5.10, a second reinforcing rib 5.11, and a sixth threaded hole 5.12.

[0035] The post-processing assembly 8 has two eighth mounting surfaces 8.1 and four second through holes 8.2.

[0036] The support bracket 9 has six ninth mounting surfaces 9.1, four third through holes 9.2, two second waist-shaped holes 9.3, two tenth mounting surfaces 9.4, two eleventh mounting surfaces 9.5, a rear hanging ear hole 9.6, a right side plate 9.7, a left side plate 9.8, an oblique rib 9.9, two arc avoidance holes 9.10, and a transverse rib 9.11.

[0037] The first mounting surface 1.2 of the cylinder head 1 is fitted with the third mounting surface 3.1 of the air-conditioning compressor bracket 3, and four bolts A2 pass through the first through hole 3.2 and are screwed to the first threaded hole 1.1 to fix the air-conditioning compressor bracket 3 on the cylinder head 1; the second mounting surface 1.3 of the cylinder head 1 is fitted with the ninth mounting surface 9.1 of the support bracket 9, and four bolts E11 pass through the third through hole 9.2 and are screwed to the second threaded hole 1.4 to fix the support bracket 9 on the cylinder head 1; the fifth mounting surface 5.1 of the main bracket 5 is fitted with the fourth mounting surface 3.3 of the air-conditioning compressor bracket 3, and two bolts B4 pass through the first through hole 9.2 and are screwed to the second threaded hole 1.4 to fix the support bracket 9 on the cylinder head 1. A waist-shaped hole 5.2 is screwed with the third threaded hole 3.4, the seventh mounting surface 5.5 of the main bracket 5 is fitted with the ninth mounting surface 9.1 of the support bracket 9, and two bolts D10 pass through the second waist-shaped hole 9.3 and are screwed with the fifth threaded hole 5.6 to fix the main bracket 5 on the air-conditioning compressor bracket 3 and the support bracket 9 respectively; the eighth mounting surface 8.1 of the post-processing assembly 8 is connected to the sixth mounting surface 5.3 of the main bracket 5 through four vibration damping blocks 6, and four bolts C7 are screwed through the second through hole 8.2, the vibration damping block 6 and the fourth threaded hole 5.4 to fix the post-processing assembly 8 to the main bracket 5.

[0038] In the embodiment of the present invention: a non-road diesel engine after-treatment mounting bracket structure adopts a design concept of combining a main bracket 5, a support bracket 9, and an air-conditioning compressor bracket 3. All three adopt a casting structure, which has high strength, hardness, wear resistance, corrosion resistance, good toughness and impact strength. The casting can produce parts with complex shapes through a casting process, increase material utilization, facilitate batch production and processing, and provide designers with greater design freedom. The support bracket 9 is designed with an "angle" structure, and forms a frame-type structural system with the right side plate 9.7 and the left side plate 9.8 through the body, transverse ribs 9.11 and oblique ribs 9.9 to meet the strength requirements of the bracket. At the same time, the hood bracket fixing, diesel filter fixing, etc. are integratedly designed to increase adaptability. The main bracket 5 is designed with two "T-shaped" structures, which, together with the first through vertical rib 5.9 and the second through vertical rib 5.10, connect the fan and the flywheel end, ensure the overall strength of the bracket, and effectively solve the problem of the existing steel plate bracket breaking. The fixing of the post-processing assembly becomes firm and reliable, and the sixth threaded hole 5.12 for fixing the intercooler pipeline is integrated and designed, and the matching adaptability is increased. Through the cooperation of the second waist-shaped hole 9.3 on the support bracket 9 and the first waist-shaped hole 5.2 on the main bracket 5, the main bracket can obtain good assembly consistency during the assembly process, and the problem of bolt loosening and breaking can also be avoided.

[0039] Through the implementation of the above scheme, the existing problems of batch production and processing difficulties, poor assembly consistency, poor rigidity of steel plate structure, complex molding, loose and broken bolts, etc. can be well solved. The post-processing assembly is fixed to the main bracket through the vibration damping block, and the wall thickness post-processing itself is damaged due to vibration problems during the operation of the whole machine.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can be modified or replaced by equivalents with reference to the above embodiments. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of this application.

Claims

1. A non-road diesel engine aftertreatment mounting bracket structure, comprising: Cylinder head (1), bolt A (2), air conditioning compressor bracket (3), bolt B (4), main body bracket (5), vibration damping block (6), bolt C (7), aftertreatment assembly (8), support bracket (9), bolt D (10), bolt E (11); characterized in that: the air conditioning compressor bracket (3) is fixedly mounted on the cylinder head (1) by bolt A (2), the support bracket (9) is fixedly mounted on the cylinder head (1) by bolt E (11), the main body bracket (5) is fixedly mounted on the air conditioning compressor bracket (3) by bolt B (4) and bolt D (10), the support bracket (9) fixes the diesel filter bracket and the engine cover bracket, and the bolt C (7) fixes the aftertreatment assembly (8). The processing assembly (8) is fixedly mounted on the main support (5) via a vibration-damping block (6); the air-conditioning compressor support (3) is provided with a third threaded hole (3.4) for fixing the main support (5), and the air-conditioning compressor support (3) is provided with a front lifting ear hole (3.5); the main support (5) adopts a semi-arch structure as a support body, and is designed with a first through-through vertical rib (5.9) and a second through-through vertical rib (5.10) that penetrate the front and rear, and a first reinforcing rib (5.8) and a second reinforcing rib (5.11) are added to the bottom of the main support (5), and together with the support body and the first through-through vertical rib (5.9) and the second through-through vertical rib (5.10), a "T-shaped" structure is formed.

2. A non-road diesel engine aftertreatment mounting bracket structure according to claim 1, characterized in that: Three weight-reducing holes (5.7) are provided on the main body support (5), and two first waist-shaped holes (5.2) are provided at the fan end of the main body support (5).

3. A non-road diesel engine aftertreatment mounting bracket structure according to claim 1, characterized in that: The fan end of the support bracket (9) is provided with two second waist-shaped holes (9.3), which can be adjusted in the up and down directions when assembling the connecting bracket.

4. A non-road diesel engine aftertreatment mounting bracket structure according to claim 1, characterized in that: The top surface of the support bracket (9) adopts a flat plate connection structure, which is connected to the right side plate (9.7) and the left side plate (9.8) to form a frame structure. The top of the support bracket (9) is provided with a tenth mounting surface (9.4) for fixing the hood bracket.

5. The non-road diesel engine aftertreatment mounting bracket structure according to claim 1, characterized in that: The right side of the support bracket (9) is provided with a rear lifting ear hole (9.6), the left side of the support bracket (9) is provided with an eleventh mounting surface (9.5) for fixing the diesel filter bracket, and is used to fix the diesel filter bracket. The left and right sides of the support bracket (9) are provided with arc avoidance holes (9.10).

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