Damping device for heat exchanger

Abstract

The utility model discloses a vibration damper for a heat exchanger, which comprises a mounting bracket consisting of a vertical mounting plate and a horizontal mounting plate, a plurality of bolt mounting holes distributed at equal intervals are arranged at two transverse ends of the horizontal mounting plate, and the bolt mounting holes correspond to heat exchanger mounting holes. The bolt mounting hole is connected with the heat exchanger mounting hole through a fastening bolt, the fastening bolt is provided with a vibration reduction assembly, the vibration reduction assembly comprises a lining arranged on the fastening bolt in a sleeving mode, the lining is sleeved with an upper vibration reduction pad and a lower vibration reduction pad, the structures of the upper vibration reduction pad and the lower vibration reduction pad are oppositely symmetrical, and inner holes of the upper vibration reduction pad and the lower vibration reduction pad are of a step structure; according to the vibration reduction support, axial vibration reduction and radial vibration reduction of the heat exchanger can be effectively achieved at the same time, the situation that a vibration reduction assembly fails too early due to excessive extrusion can be avoided, the vibration reduction effect is good, and the service life of the heat exchanger is prolonged. And the service life of the damping assembly is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of damping device, and relates to a damping device, specifically relates to a damping device for heat exchanger. BACKGROUND

[0002] With the continuous development of commercial vehicles, the main machine factory puts forward higher requirements to the functionality, reliability and modularization of the transmission, in order to prevent the transmission oil from overheating and affecting the service life of the transmission, a separate heat exchanger is usually installed on the transmission by using a metal support to cool the gear oil of the transmission, but the vehicle (such as a mine dump truck) with a high-power engine is exposed to the engine vibration and road vibration environment for a long time in the actual operation process, the complex operation condition and the variable vehicle load, the pure rigid contact structure of the rigid support and the heat exchanger can cause the metal fatigue fracture of the support or the oil pipe, and the vibration of the connecting parts can cause internal leakage or external leakage and other faults, thereby reducing the heat dissipation function. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims at providing a damping device for heat exchanger, which can solve the technical problems of the existing damping device, such as fatigue fracture of the connecting part with the heat exchanger, internal leakage or external leakage of the heat exchanger and reduction of the heat dissipation function.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A damping support for heat exchanger, comprising a mounting support, the mounting support comprises a vertical mounting plate and a horizontal mounting plate arranged perpendicular to each other, the vertical mounting plate is connected with the transmission, and the horizontal mounting plate is arranged at the bottom of the heat exchanger and connected with the heat exchanger, characterized in that a through hole for the oil outlet pipe of the heat exchanger is formed in the middle part of the horizontal mounting plate, a plurality of bolt mounting holes are formed at the transverse ends of the horizontal mounting plate, the bolt mounting holes are distributed at equal intervals, the bolt mounting holes correspond to the mounting holes of the heat exchanger, the bolt mounting holes and the mounting holes of the heat exchanger are connected through fastening bolts, and a damping assembly is arranged on the fastening bolt.

[0006] The damping assembly comprises a bushing sleeved on the fastening bolt, an upper damping pad and a lower damping pad are sleeved on the bushing, the upper damping pad is arranged between the top outer ring of the bushing and the mounting plate of the heat exchanger, the lower damping pad is arranged between the mounting plate of the heat exchanger and the horizontal mounting plate, the bottom end of the upper damping pad and the top end of the lower damping pad respectively extend into the mounting hole of the heat exchanger, and the bottom end of the fastening bolt is connected with a fastening nut through the bolt mounting hole.

[0007] The utility model also includes the following technical features:

[0008] The upper damping pad and the lower damping pad are symmetrically structured, and each of the upper damping pad and the lower damping pad comprises a damping pad body, an inner hole is formed in the damping pad body in an axial direction, an upper damping pad ring is integrally arranged on a top end of an outer wall of the damping pad body of the upper damping pad in a circumferential direction, and a lower damping pad ring is integrally arranged on a bottom end of an outer wall of the damping pad body of the lower damping pad in a circumferential direction.

[0009] The lower surface of the upper damping pad ring is in abutment with the upper surface of the heat exchanger mounting plate, and the upper surface of the upper damping pad ring is in contact with the lower surface of the top outer ring of the bushing.

[0010] The upper surface of the lower damping pad ring is in contact with the lower surface of the heat exchanger mounting plate, and the lower surface of the lower damping pad ring is in abutment with the upper surface of the horizontal mounting plate.

[0011] The upper damping pad and the lower damping pad are provided with a gasket sleeved on the bushing, the lower surface of the gasket is in contact with the top end of the lower damping pad, and a buffer gap is reserved between the upper surface of the gasket and the bottom end of the upper damping pad.

[0012] The fastening nut is welded at the lower end of the bolt mounting hole, and the fastening nut is coaxially arranged with the bolt mounting hole.

[0013] The hole diameter of the bolt mounting hole is smaller than the hole diameter of the heat exchanger mounting hole.

[0014] The bottom end of the bushing is close to the bottom end of the lower damping pad.

[0015] The inner hole comprises coaxially arranged first and second inner holes, and the first and second inner holes form a stepped structure.

[0016] The hole diameter of the first inner hole is smaller than the hole diameter of the second inner hole.

[0017] The upper damping pad and the lower damping pad are made of fluororubber or hydrogenated nitrile rubber.

[0018] Compared with the prior art, the utility model has the following technical effects:

[0019] The utility model discloses a structure symmetrical structure setting combination bush and gasket's use can effectively realize the vibration reduction of heat exchanger, can also avoid the vibration reduction assembly because of excessive extrusion premature failure, prolong the service life of vibration reduction device, avoid the internal leakage or exposure of heat exchanger because of vibration, guarantee the heat dissipation function of heat exchanger, realize the axial and radial vibration reduction of heat exchanger simultaneously, reduce the connecting part between installation and heat exchanger because long -term excessive stress causes the probability of fatigue fracture, the stepped structure of the inner hole of upper vibration reduction pad and lower vibration reduction pad can avoid the falling of parts and improve the accurate stability of installation, can also avoid the relative movement between bush and upper vibration reduction pad and lower vibration reduction pad, improve the service life of vibration reduction assembly. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is the vibration reduction assembly structure schematic diagram of the utility model.

[0021] Fig. 2 It is the whole structure exploded schematic diagram of the utility model.

[0022] Fig. 3 It is the use state reference drawing of the utility model.

[0023] Fig. 4 It is the sectional view of upper vibration reduction pad of the utility model.

[0024] The meaning of each reference numeral in the drawing is as follows:

[0025] 1, heat exchanger, 2, mounting support, 3, fastening bolt, 4, vibration reduction assembly, 5, fastening nut;

[0026] 11, heat exchanger body, 12, heat exchanger mounting plate, 13, heat exchanger mounting hole, 14, heat exchanger oil outlet pipe;

[0027] 21, vertical mounting plate, 22, horizontal mounting plate, 23, through hole, 24, bolt mounting hole;

[0028] 41, bush, 42, upper vibration reduction pad, 43, lower vibration reduction pad, 44, gasket;

[0029] 421, vibration reduction pad main body, 422, inner hole, 423, upper vibration reduction pad ring, 433, lower vibration reduction pad ring, 4221, first inner hole, 4222, second inner hole.

[0030] The specific content of the utility model is explained and described in further detail in the following combining with the embodiment. DETAILED DESCRIPTION

[0031] Following the above technical solution, the following are specific embodiments of this utility model. It should be noted that this utility model is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0032] In this utility model, unless otherwise stated, directional terms such as "upper", "lower", "left", and "right" are generally defined based on the drawing in the corresponding figure; "inner" and "outer" refer to the inner and outer contours of the corresponding components; and "horizontal" and "vertical" refer to the directions marked in the figure.

[0033] It should be noted that the heat exchanger 1 generally includes a heat exchanger body 11, a heat exchanger mounting plate 12 is machined on the bottom edge of the heat exchanger body 11, a heat exchanger mounting hole 13 is opened on the heat exchanger mounting plate 12, and a heat exchanger oil outlet pipe 14 is provided at the bottom of the heat exchanger body 11.

[0034] Example:

[0035] This embodiment provides a vibration damping bracket for a heat exchanger, such as... Figs. 1 to 4 As shown, the device includes a mounting bracket 2, which comprises a vertical mounting plate 21 and a horizontal mounting plate 22 arranged perpendicularly to each other. The vertical mounting plate 21 is connected to the gearbox, and the horizontal mounting plate 22 is located at the bottom of the heat exchanger 1 and connected to the heat exchanger 1. A through hole 23 for the oil outlet pipe 14 of the heat exchanger is opened in the middle of the horizontal mounting plate 22. Multiple equally spaced bolt mounting holes 24 are opened at both ends of the horizontal mounting plate 22. The bolt mounting holes 24 correspond to the heat exchanger mounting holes 13. The bolt mounting holes 24 and the heat exchanger mounting holes 13 are connected by fastening bolts 3. Vibration damping components 4 are provided on the fastening bolts 3.

[0036] The vibration damping assembly 4 includes a bushing 41 fitted onto the fastening bolt 3. An upper vibration damping pad 42 and a lower vibration damping pad 43 are fitted onto the bushing 41. The upper vibration damping pad 42 is located between the top outer ring of the bushing 41 and the heat exchanger mounting plate 12. The lower vibration damping pad 43 is located between the heat exchanger mounting plate 12 and the horizontal mounting plate 22. The bottom end of the upper vibration damping pad 42 and the top end of the lower vibration damping pad 43 extend into the heat exchanger mounting hole 13, respectively. The bottom end of the fastening bolt 3 passes through the bolt mounting hole 24 and is connected to a fastening nut 5.

[0037] In the embodiment, the bushing 41 supports and limits the fastening bolt 3, ensures that the pre-tightening torque of the fastening bolt 3 does not change due to the deformation of the upper damping pad 42 and the lower damping pad 43, realizes effective installation, and can prevent the fastening bolt 3 from excessively pressing the upper damping pad 42 and the lower damping pad 43, thereby avoiding the premature failure of the upper damping pad 42 and the lower damping pad 43, realizing effective damping of the heat exchanger, avoiding internal leakage or external exposure of the heat exchanger due to vibration, and ensuring the heat dissipation function of the heat exchanger.

[0038] As a preferred scheme of the embodiment, the upper damping pad 42 and the lower damping pad 43 are symmetrically arranged in the embodiment, and each of the upper damping pad 42 and the lower damping pad 43 comprises a damping pad body 421, and an inner hole 422 is formed in the damping pad body 421 along the axial direction, and an upper damping pad ring 423 is integrally arranged on the outer wall top end of the damping pad body 421 of the upper damping pad 42 along the circumferential direction, and a lower damping pad ring 433 is integrally arranged on the outer wall bottom end of the damping pad body 421 of the lower damping pad 43 along the circumferential direction.

[0039] The lower surface of the upper damping pad ring 423 abuts against the upper surface of the heat exchanger mounting plate 12, the upper surface of the upper damping pad ring 423 is in contact with the lower surface of the top outer ring of the bushing 41, the upper surface of the lower damping pad ring 433 is in contact with the lower surface of the heat exchanger mounting plate 12, the lower surface of the lower damping pad ring 433 abuts against the upper surface of the horizontal mounting plate 22, and the damping pad body 421 below the upper damping pad ring 423 and the damping pad body 421 above the lower damping pad ring 433 extend into the heat exchanger mounting hole 13, which not only realizes axial damping of the heat exchanger mounting hole 13, but also realizes radial damping of the heat exchanger mounting hole 13, effectively improves the damping effect of the damping device on the heat exchanger 1, reduces the probability of fatigue fracture of the heat exchanger mounting plate 12 caused by long-term excessive radial stress, and further avoids the possibility of internal leakage or external exposure of the heat exchanger.

[0040] Further, the gasket 44 is sleeved on the bushing 41, the lower surface of the gasket 44 is in contact with the top end of the lower damping pad 43, and the upper surface of the gasket 44 is reserved with a buffer gap between the bottom end of the upper damping pad 42. In use, by adjusting the size of the initial conversion gap, the preloading force of the upper damping pad 42 and the lower damping pad 43 can be accurately controlled, and the performance thereof is optimized. When the upper damping pad 42 and the lower damping pad 43 are not stressed, the material fatigue is reduced. The gasket 44 is arranged between the upper damping pad 42 and the lower damping pad 43 and has a gap before being compressed, so that the overall device has a relatively low stiffness when not stressed. When the upper damping pad 43 and the lower damping pad 43 are stressed and compressed, the bottom end of the upper damping pad 42 is in contact with the upper surface of the gasket 44, and a complete damping combination is formed among the three, so that the overall total stiffness is improved, and greater impact and vibration can be coped with. Meanwhile, the gasket 44 can prevent the upper damping pad 42 and the lower damping pad 43 from being directly contacted, so that the service life is prolonged.

[0041] As a preferred scheme of the embodiment, the fastening nut 5 is welded at the lower end of the bolt mounting hole 24 in the embodiment, and the fastening nut 5 is coaxially arranged with the bolt mounting hole 24, so that the fastening nut 5 is prevented from being loosened after long-term use, and the installation stability of the overall device is improved.

[0042] As a preferred scheme of the embodiment, the hole diameter of the bolt mounting hole 24 is smaller than the hole diameter of the heat exchanger mounting hole 13 in the embodiment, and the hole diameter difference between the two hole diameters is an installation gap reserved for the damping assembly 4.

[0043] As a preferred scheme of the embodiment, the bottom end of the bushing 41 is close to the bottom end of the lower damping pad 43 in the embodiment, and a gap is reserved between the bottom end of the bushing 41 and the horizontal mounting plate 22 in the initial state, so as to provide a deformation space for the damping assembly 4. After the fastening bolt 3 is tightened, the bottom end of the bushing 41 is in contact with the horizontal mounting plate 22, thereby playing a supporting and limiting role.

[0044] As a preferred form of the present embodiment, the inner hole 422 in the present embodiment comprises a coaxially arranged first inner hole 4221 and a second inner hole 4222, the combination of the first inner hole 4221 and the second inner hole 4222 forms a stepped structure, further, the hole diameter of the first inner hole 4221 is smaller than the hole diameter of the second inner hole 4222, that is, the upper end hole diameter of the stepped inner hole 422 of the upper damping pad 42 is larger than the lower end hole diameter, which is in interference fit with the bushing 41, ensuring that the bushing 41 does not fall off during installation, and also ensuring the radial damping effect, the stepped inner hole 422 of the lower damping pad 43 is in transition fit with the bushing 41, which can not only avoid the lower damping pad 43 from falling off from the lower part of the bushing 41, but also provide deformation space for the bottom end of the lower damping pad 43, reducing the assembly difficulty, the interference fit between the stepped inner hole 422 and the bushing 41, when the whole receives vibration, the bushing 41 is in close contact with the upper damping pad 42 and the lower damping pad 43 without gap, thereby avoiding relative movement between each other, improving the service life of the damping assembly 4.

[0045] As a preferred form of the present embodiment, the upper damping pad 42 and the lower damping pad 43 in the present embodiment are made of fluororubber or hydrogenated nitrile rubber, which is a corrosion-resistant and high-low temperature-resistant material, so that the device can provide effective damping effect in various use environments.

[0046] In actual operation of the present embodiment:

[0047] During installation, first insert the upper damping pad 42 into the heat exchanger mounting hole 13 from the top, then insert the bushing 42 into the upper damping pad 42 from the top, and then place the gasket 44 on the top end of the lower damping pad 43 and insert it into the heat exchanger mounting hole 13 from the bottom, because the stepped inner hole 422 of the upper damping pad 42 and the lower damping pad 43 is in interference fit with the bushing 41, so it will not fall off, then place the heat exchanger 1 with the damping assembly 4 on the horizontal mounting plate 22, align the inner hole of the bushing 42 with the bolt mounting hole 24, then insert the fastening bolt 3 into the bushing 41 from the top and tighten it, until the bottom end of the bushing 41 abuts against the upper surface of the horizontal mounting plate 22.

[0048] When the heat exchanger 1 receives axial vibration, the damping assembly 4 can transmit vibration energy to the fastening bolt 3 and the mounting bracket 2, thereby reducing the vibration damage of the heat exchanger 1, when the heat exchanger 1 receives radial vibration, the vibration energy is transmitted to the bushing 41 and the mounting bracket 2 through the buffering of the upper damping pad 42 and the lower damping pad 43, thereby reducing the vibration damage.

Claims

1. A vibration damping device for a heat exchanger, comprising a mounting bracket (2) including a vertical mounting plate (21) and a horizontal mounting plate (22) disposed perpendicular to each other, the vertical mounting plate (21) being connected to a transmission case, and the horizontal mounting plate (22) being disposed at a bottom of the heat exchanger (1) and connected to the heat exchanger (1), characterized in that, The middle part of the horizontal mounting plate (22) is provided with a through hole (23) for the oil outlet pipe (14) of the heat exchanger to pass through, and a plurality of bolt mounting holes (24) are arranged at the two ends of the horizontal mounting plate (22) in a distributed manner, the bolt mounting holes (24) correspond to the heat exchanger mounting holes (13), and the bolt mounting holes (24) and the heat exchanger mounting holes (13) are connected by fastening bolts (3), and the fastening bolts (3) are provided with damping assemblies (4). The damping assembly (4) comprises a bushing (41) sleeved on the fastening bolt (3), an upper damping pad (42) and a lower damping pad (43) sleeved on the bushing (41), the upper damping pad (42) is arranged between the top outer ring of the bushing (41) and the heat exchanger mounting plate (12), the lower damping pad (43) is arranged between the heat exchanger mounting plate (12) and the horizontal mounting plate (22), the bottom end of the upper damping pad (42) and the top end of the lower damping pad (43) extend into the heat exchanger mounting hole (13) respectively, and the bottom end of the fastening bolt (3) is connected with a fastening nut (5) through the bolt mounting hole (24).

2. The vibration damping device for a heat exchanger according to claim 1, characterized by The upper damping pad (42) and the lower damping pad (43) are symmetrically arranged, the upper damping pad (42) and the lower damping pad (43) each comprise a damping pad main body (421), an inner hole (422) is arranged in the damping pad main body (421) in an axial direction, the outer wall top end of the damping pad main body (421) of the upper damping pad (42) is integrally provided with an upper damping pad ring (423) in a circumferential direction, and the outer wall bottom end of the damping pad main body (421) of the lower damping pad (43) is integrally provided with a lower damping pad ring (433) in a circumferential direction. The lower surface of the upper damping pad ring (423) abuts against the upper surface of the heat exchanger mounting plate (12), and the upper surface of the upper damping pad ring (423) is in contact with the lower surface of the top outer ring of the bushing (41). The upper surface of the lower damping pad ring (433) is in contact with the lower surface of the heat exchanger mounting plate (12), and the lower surface of the lower damping pad ring (433) abuts against the upper surface of the horizontal mounting plate (22).

3. The vibration damping device for a heat exchanger according to claim 1, characterized by The upper damping pad (42) and the lower damping pad (43) are provided with a gasket (44) sleeved on the bushing (41), the lower surface of the gasket (44) is in contact with the top end of the lower damping pad (43), and a buffer gap is reserved between the upper surface of the gasket (44) and the bottom end of the upper damping pad (42).

4. The vibration damping device for a heat exchanger according to claim 1, wherein The fastening nut (5) is welded at the lower end of the bolt mounting hole (24), and the fastening nut (5) is coaxially arranged with the bolt mounting hole (24).

5. The vibration damping device for a heat exchanger according to claim 1, wherein The hole diameter of the bolt mounting hole (24) is smaller than the hole diameter of the heat exchanger mounting hole (13).

6. The vibration damping device for a heat exchanger according to claim 1, wherein The bottom end of the bushing (41) is close to the bottom end of the lower damping pad (43).

7. The vibration damping device for a heat exchanger according to claim 2, wherein The inner hole (422) comprises a first inner hole (4221) and a second inner hole (4222) arranged coaxially, and the combination of the first inner hole (4221) and the second inner hole (4222) forms a stepped structure.

8. The vibration damping device for a heat exchanger according to claim 7, characterized by The first inner hole (4221) has a smaller hole diameter than the second inner hole (4222).

9. The vibration damping device for a heat exchanger according to claim 1, wherein The upper damping pad (42) and the lower damping pad (43) are made of fluoro rubber or hydrogenated nitrile rubber.

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