Silencer support and power system thereof

Abstract

The utility model belongs to the technical field of engineering machinery accessories, and particularly discloses a silencer support and a power system thereof, the silencer support comprises a support and a cross beam, the support comprises an arc-shaped plate used for supporting a silencer, the lower portion of the arc-shaped plate is fixedly connected with a vertical plate, the cross beam is installed on the vertical plate, and an opening of the arc-shaped plate is arranged upwards; fixing holes used for fixing a silencer are formed in the two side edges of the arc-shaped plate in the arc-shaped direction, a rib plate is fixedly connected between the vertical plate and the arc-shaped plate, first mounting holes and a receding hole are formed in the vertical plate, and the first mounting holes are formed in the two sides of the receding hole; interference between the silencer support and the pump can be avoided, and installation, fixation and later maintenance and disassembly of the silencer are facilitated; due to the arrangement of the receding holes, although the structural strength is weakened, the strength of the whole silencer support is enhanced through the rib plates, and when the whole silencer works, cracking caused by vibration and impact can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery accessories, and in particular relates to a muffler bracket and a power system thereof. Background Art

[0002] In order to achieve energy saving and economy, large hydraulic excavators can use an independent cooling system for engine cooling, that is, the fan is driven by hydraulic pressure, and the temperature and wind speed are controlled to avoid heat loss and high noise caused by the direct drive fan. The location of the independent cooling pump is particularly critical, usually on the left and right sides of the engine body or above the flywheel housing; due to installation space limitations, the excavator muffler bracket is usually fixed on the flywheel housing or the flywheel housing end cover. For the situation where the engine power take-off port is located above the flywheel housing, the muffler bracket overlaps with the power take-off port, causing the power take-off port to be idle or the bracket to interfere with the cooling pump.

[0003] In the prior art, there is a muffler bracket and engineering machinery, including a bending plate, a support plate and a mounting plate, wherein the bending plate can be installed on the engine, the support plate is vertically mounted on the outer bending surface of the bending plate, and the mounting surface of the support plate corresponding to the bending plate forms a bending surface that matches and fits the outer bending surface, and the mounting plate is mounted on the support plate for muffler installation. Although the risk of fatigue cracking between the welds of the muffler bracket can be reduced, it is easy to interfere with the cooling pump during installation, and a cooling pump with a larger flow rate cannot be used. The hydraulic pipeline is difficult to arrange and maintenance is inconvenient. Utility Model Content

[0004] In view of the problem that the engine power take-off port is above the flywheel housing in the prior art, the installation space of the independent engine cooling pump is limited, the cooling pump and the engine body are easily interfered, a cooling pump with a larger flow rate cannot be used, and maintenance is inconvenient, a muffler bracket and its power system are proposed. The utility model provides the following technical solutions:

[0005] A silencer bracket comprises a bracket and a crossbeam, the bracket comprises an arc-shaped plate for supporting the silencer, a vertical plate is fixedly connected below the arc-shaped plate, the crossbeam is mounted on the vertical plate, and the opening of the arc-shaped plate is arranged upward; fixing holes for fixing the silencer are arranged on both sides of the arc direction of the arc-shaped plate, a rib plate is fixedly connected between the vertical plate and the arc-shaped plate, a first mounting hole and a clearance hole are arranged on the vertical plate, and the first mounting hole is arranged on both sides of the clearance hole.

[0006] Preferably, reinforcing plates are fixedly connected between the two sides of the vertical plate and the arc-shaped plate.

[0007] Preferably, the reinforcing plate and the rib plate are commonly connected to a connecting plate on their upper sides, and the upper end of the connecting plate is fixedly connected to the arc-shaped plate.

[0008] Preferably, the clearance holes are arranged before and after the through vertical plate, and the clearance holes form an opening at the lower end of the vertical plate.

[0009] Preferably, an end cover connecting hole is provided on the peripheral side of the lower portion of the relief hole.

[0010] Preferably, a second mounting hole and an assembly hole are provided on the crossbeam, and the second mounting hole is connected to the first mounting hole by bolts.

[0011] Preferably, the crossbeam comprises a mounting plate and a cushion block, the assembly hole passes through the cushion block and the mounting plate, and the second mounting holes are arranged on the mounting plate and distributed on both sides of the cushion block.

[0012] A power system includes a muffler, an engine, a flywheel housing end cover, a main pump and a heat dissipation pump, and also includes the above-mentioned muffler bracket, the muffler is installed on the muffler bracket, and the crossbeam of the muffler bracket is connected to the flywheel housing end cover through an assembly hole.

[0013] Preferably, the vertical plate is connected to the end cover of the flywheel housing through the end cover connecting hole.

[0014] Preferably, the muffler is mounted on the muffler bracket by means of U-bolts, and the U-bolts are connected to the fixing holes.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. Set a clearance hole on the vertical plate to avoid interference between the muffler bracket and the pump, and facilitate the installation, fixation and later maintenance and disassembly of the muffler;

[0017] 2. The strength of the entire muffler bracket is enhanced by the rib plate and the reinforcing plate, which can avoid cracking caused by vibration and impact when the whole machine is working;

[0018] 3. The reinforcing plate and the rib plate are arranged vertically, and are connected to a connecting plate on the upper side. The upper end of the connecting plate is fixedly connected to the arc plate, so as to further enhance the strength of the entire muffler bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of the bracket;

[0020] Figure 2 It is a three-dimensional structural diagram of the beam;

[0021] Figure 3 It is a three-dimensional structural diagram of the power system;

[0022] In the attached drawings, 1. bracket; 11. arc-shaped plate; 111. fixing hole; 12. connecting plate; 13. rib plate; 14. reinforcing plate; 15. vertical plate; 16. first mounting hole; 17. end cover connecting hole; 18. clearance hole; 2. crossbeam; 21. pad; 211. assembly hole; 22. mounting plate; 221. second mounting hole; 3. muffler; 4. independent cooling pump for engine; 5. independent cooling pump for hydraulic oil; 6. main pump; 7. end cover of flywheel housing; 8. engine; 9. U-bolt. DETAILED DESCRIPTION

[0023] The directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention of the utility model.

[0024] like Figure 1-3 As shown, a bracket 1 for muffler 3 comprises a bracket 1 and a crossbeam 2, the bracket 1 comprises an arc plate 11 for supporting the muffler 3, a vertical plate 15 is fixedly connected to the lower side of the arc plate 11, the crossbeam 2 is mounted on the vertical plate 15, and the opening of the arc plate 11 is arranged upward; fixing holes 111 for fixing the muffler 3 are arranged on both sides of the arc direction of the arc plate 11, a rib plate 13 is fixedly connected between the vertical plate 15 and the arc plate 11, a first mounting hole 16 and a clearance hole 18 are arranged on the vertical plate 15, the clearance hole 18 forms a notch at the lower end of the vertical plate 15, and the first mounting hole 16 is arranged on both sides of the clearance hole 18; the problem of interference between the bracket 1 for muffler 3 and the pump can be avoided, and the installation, fixing and later maintenance and disassembly of the muffler 3 are convenient; the arrangement of the clearance hole 18, although weakening the structural strength, but with the rib plate 13, the strength of the entire bracket 1 for muffler 3 is enhanced, and when the whole machine is working, the cracking problem caused by vibration and impact can be avoided.

[0025] Specifically, reinforcing plates 14 are fixedly connected between the two sides of the vertical plate 15 and the arc plate 11, and the reinforcing plates 14 and the rib plates 13 are perpendicular to the vertical plate 15; the reinforcing plates 14 and the rib plates 13 are vertically arranged, and are commonly connected to a connecting plate 12 on the upper side, and the upper end of the connecting plate 12 is fixedly connected to the arc plate 11, so as to further enhance the strength of the entire muffler 3 bracket 1.

[0026] Specifically, the lower opening of the clearance hole 18 is arc-shaped, and the end cover connecting hole 17 is arranged around the arc-shaped opening.

[0027] Specifically, the cross beam 2 is provided with a second mounting hole 221 and an assembly hole 211, and the second mounting hole 221 is connected to the first mounting hole 16 by bolts; specifically, the cross beam 2 includes a mounting plate 22 and a cushion block 21, the assembly hole 211 penetrates the cushion block 21 and the mounting plate 22, and the second mounting hole 221 is provided on the mounting plate 22 and distributed on both sides of the cushion block 21. After assembly, the assembly hole 211 and the end cover connection hole 17 are on the same circular line, which is convenient for connection with the flywheel housing end cover 7 and improves the firmness.

[0028] A power system includes a muffler 3, an engine 8, a flywheel, a main pump 6 and a heat dissipation pump. The main pump 6 is installed on the flywheel housing end cover 7 of the flywheel and is connected to the engine 8 through a coupling. It also includes the above-mentioned muffler 3 bracket 1, the muffler 3 is installed on the muffler 3 bracket 1, the crossbeam 2 of the muffler 3 bracket 1 is connected to the flywheel housing end cover 7 through an assembly hole 211, and the vertical plate 15 is firmly fixed to the flywheel housing end cover 7 through the crossbeam 2.

[0029] Specifically, there are two independent cooling pumps, one of which is arranged above the flywheel housing of the engine 8, and the other is installed on the main pump 6 to improve the heat dissipation capacity; according to the objects of action, the two cooling pumps are the independent cooling pump 4 of the engine 8 and the independent cooling pump 5 of the hydraulic oil; during assembly, the flywheel housing end cover 7 is first fixed to the flywheel housing of the engine 8, the main pump 6 is installed on the flywheel housing end cover 7, the independent cooling pump 4 of the engine 8 is installed at the power take-off port of the engine 8, and the power take-off port of the engine 8 is located above the flywheel housing end cover 7, and the independent cooling pump 5 of the hydraulic oil is installed above the main pump 6.

[0030] Specifically, the vertical plate 15 is connected to the flywheel housing end cover 7 through the end cover connecting hole 17; the muffler 3 is installed on the muffler 3 bracket 1 through the U-bolt 9, and the U-bolt 9 is connected to the fixing hole 111; at the same time, there are 4 fixing holes 111 arranged in a rectangular shape, two by two in a group, and the U-bolts 9 can be connected at both ends respectively to fix the muffler 3 at both ends to improve the firmness.

Claims

1. A muffler bracket, characterized in that: The invention comprises a bracket (1) and a crossbeam (2), wherein the bracket (1) comprises an arc-shaped plate (11) for supporting a muffler (3), wherein a vertical plate (15) is fixedly connected to the lower portion of the arc-shaped plate (11), the crossbeam (2) is mounted on the vertical plate (15), and the arc-shaped plate (11) is arranged with its opening facing upward; fixing holes (111) for fixing the muffler (3) are arranged on both sides of the arc line direction of the arc-shaped plate (11), a rib plate (13) is fixedly connected between the vertical plate (15) and the arc-shaped plate (11), and a first mounting hole (16) and a clearance hole (18) are arranged on the vertical plate (15), and the first mounting hole (16) is arranged on both sides of the clearance hole (18).

2. The muffler bracket according to claim 1, characterized in that: A reinforcing plate (14) is fixedly connected between the vertical plate (15) and the arc-shaped plate (11).

3. The muffler bracket according to claim 2, characterized in that: The reinforcing plate (14) and the rib plate (13) are connected to a connecting plate (12) on their upper sides, and the upper end of the connecting plate (12) is fixedly connected to the arc-shaped plate (11).

4. The muffler bracket according to claim 1, characterized in that: The clearance hole (18) is arranged to penetrate the vertical plate (15) from front to back, and the clearance hole (18) forms an opening at the lower end of the vertical plate (15).

5. The muffler bracket according to claim 4, characterized in that: An end cover connection hole (17) is provided on the circumferential side of the lower portion of the clearance hole (18).

6. The muffler bracket according to claim 5, characterized in that: The crossbeam (2) is provided with a second mounting hole (221) and an assembly hole (211), and the second mounting hole (221) is connected to the first mounting hole (16) by means of bolts.

7. The muffler bracket according to claim 6, characterized in that: The crossbeam (2) comprises a mounting plate (22) and a cushion block (21); the assembly hole (211) penetrates the cushion block (21) and the mounting plate (22); and the second mounting holes (221) are arranged on the mounting plate (22) and distributed on both sides of the cushion block (21).

8. A power system, comprising a muffler (3), an engine (8), a flywheel housing end cover (7), a main pump (6) and a heat dissipation pump, characterized in that: It also comprises a muffler bracket as claimed in claim 6 or 7, wherein the muffler (3) is mounted on the muffler bracket, and the crossbeam (2) of the muffler bracket is connected to the flywheel housing end cover (7) through the assembly hole (211).

9. The power system according to claim 8, characterized in that: The vertical plate (15) is connected to the flywheel housing end cover (7) through the end cover connection hole (17).

10. The power system according to claim 8, characterized in that: The silencer (3) is mounted on the silencer bracket via a U-shaped bolt (9), and the U-shaped bolt (9) is connected to the fixing hole (111).

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