Vibration and noise reduction device for open-frame oil engine in vehicle-mounted square cabin

Abstract

The utility model discloses a vibration and noise reduction device for an open-shelf oil engine in a vehicle-mounted square cabin, which comprises a plurality of groups of vibration damper components, a plurality of upper mounting plates and a public lower mounting plate, the vibration damper components are respectively arranged between two sides of a base of the open-shelf oil engine and a supporting platform and are of a double-layer combined structure, and the public lower mounting plate is fixed on the supporting platform in the vehicle-mounted square cabin. The bottoms of the two shock absorbers on the lower layer are fixed to the middle of the common lower mounting plate, and the two ends of the upper mounting plate are fixed to the tops of the two shock absorbers respectively. The bottom of the upper-layer shock absorber is fixed to the middle of the upper mounting plate, and the top of the upper-layer shock absorber is fixedly connected with the middle of the bottom of the L-shaped supporting leg. After the noise reduction device is used, the noise of the oil engine is reduced to 74.2 decibels from 78 decibels, the amplitude of the oil engine is reduced to 3 mm from 5 mm, the low-frequency vibration of the oil engine is remarkably reduced, noise pollution is reduced, and the comfort and the working efficiency of personnel in the vehicle-mounted shelter are remarkably improved.

Description

Technical Field

[0001] The utility model relates to an engine shock absorption and noise reduction device, in particular to an open-frame oil engine shock absorption and noise reduction device installed in a vehicle-mounted shelter, belonging to the field of environmental protection technology. Background Technique

[0002] Vehicle-mounted shelters have strong mobility and environmental adaptability, and are increasingly widely used in fields such as field mineral exploration, water conservancy construction, emergency rescue, large-scale social activities, and communication command. In order to provide power for the internal and external equipment of the vehicle-mounted shelter, equipment such as internal combustion engine-generator sets (hereinafter referred to as oil engines) are usually installed in the vehicle-mounted shelter. The oil engines are of the silent type and open-frame type. When the oil engine works, the vibration and noise are very large, seriously affecting the normal work of the personnel and equipment in the cabin. The oil engine base is connected to the support platform, and its main vibration source is the internal combustion engine of the oil engine. The existing shock absorption and noise reduction devices for vehicle-mounted open-frame oil engines tend to focus on reducing noise while ignoring shock absorption and vibration isolation, and the shock absorption and vibration isolation effects of the oil engines are not significant. Content of the Utility Model

[0003] The purpose of the utility model is to provide a shock absorption and noise reduction device for an open-frame oil engine in a vehicle-mounted shelter, which has a simple structure and is flexible and convenient to install.

[0004] The utility model is realized through the following technical solutions:

[0005] A shock absorption and noise reduction device for an open-frame oil engine in a vehicle-mounted shelter includes a plurality of groups of shock absorber components, and the shock absorber components are respectively arranged between the L-shaped legs on both sides of the open-frame oil engine base and the support platform; the shock absorber components are of a double-layer combined structure, including 3 shock absorbers arranged in a finished product shape, an upper mounting plate and a common lower mounting plate. The common lower mounting plate is fixed on the support platform in the vehicle-mounted shelter and corresponds to the bottom positions of the L-shaped legs respectively; the bottoms of the 2 spaced shock absorbers in the lower layer are respectively fixed on the middle part of the common lower mounting plate, the two ends of the upper mounting plate are respectively fixed on the tops of the 2 shock absorbers, and the bottom of the 1 shock absorber in the upper layer is respectively fixed on the middle part of the upper mounting plate, and the top is respectively fixedly connected to the middle part of the bottom of the L-shaped leg.

[0006] The purpose of the utility model can also be further realized by the following technical measures.

[0007] Further, the shock absorber is a penetrating shock absorber. The central bolt sequentially passes through the common lower mounting plate, the center of the rubber body of the lower-layer penetrating shock absorber, and both ends of the upper mounting plate from bottom to top. By tightening the nuts on the top of the central bolt respectively, the lower-layer penetrating shock absorbers are respectively supported at intervals between the middle of the common lower mounting plate and the upper mounting plate; the central bolt also sequentially passes through the center of the upper mounting plate, the center of the rubber body of the upper-layer penetrating shock absorber, and the bottom of the L-shaped leg from bottom to top. By tightening the nuts on the top of the central bolt respectively, the upper-layer penetrating shock absorbers are respectively supported between the center of the upper mounting plate and the bottom of the L-shaped leg.

[0008] Further, the ratio of the center distance L1 of the shock absorber assembly to the length L2 of the L-shaped leg: L1 / L2 = 0.38 - 0.44.

[0009] Further, the hardness of the rubber body is 45HA, the elongation at break is 555.24%, and the tensile strength at break is 16.25 Mpa.

[0010] The utility model adopts 4 groups of double-layer shock absorbers arranged in a finished product shape with 3 in each group, which are respectively supported between the L-shaped legs on both sides of the open-frame oil engine base and the support platform in the vehicle-mounted shelter, thus forming a shock-absorbing platform for the oil engine. After using the utility model, the noise of the oil engine is reduced from 78 decibels to 74.2 decibels, and the amplitude of the oil engine is reduced from 5 mm to 3 mm, significantly reducing the low-frequency vibration of the oil engine, reducing noise pollution, and significantly improving the comfort and work efficiency of the personnel in the vehicle-mounted shelter.

[0011] The advantages and features of the utility model will be illustrated and explained by the following non-limiting description of the preferred embodiments, which are used as examples with reference to the accompanying drawings. Description of the Drawings

[0012] Figure 1 is the structural diagram of the utility model;

[0013] Figure 2 is Figure 1 the left view of Detailed Embodiments

[0014] The following further illustrates the utility model in conjunction with the drawings and embodiments.

[0015] As Figure 1 and Figure 2As shown in the figure, the four shock absorber assemblies 1 of the present utility model are respectively arranged between the L-shaped legs 101 on both sides of the base 10 of the open-frame oil engine and the support platform 20. The shock absorber assembly 1 is a double-layer combined structure, including three shock absorbers 11 arranged in a finished product shape, an upper mounting plate 12, and a common lower mounting plate 13. The common lower mounting plate 13 is fixed on the support platform 201 in the vehicle-mounted cabin 20 by a plurality of screws 131, and corresponds to the bottom positions of the L-shaped legs 101 respectively. The bottoms of the two spaced shock absorbers 11 in the lower layer are respectively fixed on the middle part of the common lower mounting plate 13, and both ends of the upper mounting plate 12 are respectively fixed on the tops of the two shock absorbers 11. The bottom of the one shock absorber 11 in the upper layer is respectively fixed on the middle part of the upper mounting plate 12, and the top is respectively fixedly connected to both ends of the bottom of the L-shaped leg 101.

[0016] The shock absorber 11 is a through-type shock absorber. The center bolt 111 sequentially passes through the common lower mounting plate 13, the center of the rubber body 112 of the through-type shock absorber in the lower layer, and both ends of the upper mounting plate 12 from bottom to top. By tightening the nuts 113 on the top end of the center bolt 111 respectively, the through-type shock absorbers in the lower layer are respectively spaced and supported between the middle part of the common lower mounting plate 13 and the upper mounting plate 12. The center bolt 111 also sequentially passes through the center of the upper mounting plate 12, the center of the rubber body 11 of the through-type shock absorber in the upper layer, and the bottom of the L-shaped leg 101 from bottom to top. By tightening the nuts 113 on the top end of the center bolt 111 respectively, the through-type shock absorbers in the upper layer are respectively supported between the center of the upper mounting plate 12 and the bottom of the L-shaped leg 101. The hardness of the rubber body 112 is 45HA, the elongation at break is 555.24%, and the tensile strength at break is 16.25 Mpa, and the shock absorption effect is remarkable.

[0017] In this embodiment, the ratio of the center distance L1 of the shock absorber assembly to the length L2 of the L-shaped leg is: L1 / L2 = 0.41. Such a structure enables the shock absorber assembly 1 to provide stable support for the oil engine 100 through the support platform 20 and achieve the best effect of noise reduction and vibration reduction.

[0018] In addition to the above embodiments, the present utility model can also have other implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present utility model.

Claims

1. A vibration and noise reduction device for an open-frame oil engine in a vehicle-mounted square cabin, characterized in that: It comprises an array of shock absorber assemblies, which are respectively arranged between the L-shaped legs and the supporting platform on both sides of the open-frame oil engine base; the shock absorber assembly is a double-layer combined structure, comprising three shock absorbers arranged in a finished product shape, an upper mounting plate and a common lower mounting plate, the common lower mounting plate is fixed on the supporting platform and respectively corresponds to the bottom position of the L-shaped legs; the bottoms of two intervally arranged shock absorbers in the lower layer are respectively fixed to the middle part of the common lower mounting plate, the two ends of the upper mounting plate are respectively fixed to the tops of the two shock absorbers, the bottom of one shock absorber in the upper layer is respectively fixed to the middle part of the upper mounting plate, and the top is respectively fixedly connected to the middle part of the bottom of the L-shaped legs.

2. The vibration and noise reduction device for an open-frame oil engine in a vehicle-mounted shelter as claimed in claim 1 is characterized in that: The shock absorber is a penetrating shock absorber, and the central bolt passes through the common lower mounting plate, the rubber body center of the lower penetrating shock absorber and the two ends of the upper mounting plate from bottom to top respectively, and the penetrating shock absorbers of the lower layer are supported at intervals between the middle of the common lower mounting plate and the upper mounting plate by tightening the nuts on the top of the central bolt respectively; the central bolt also passes through the center of the upper mounting plate, the rubber body center of the upper penetrating shock absorber and the bottom of the L-shaped leg respectively from bottom to top, and the penetrating shock absorbers of the upper layer are supported between the center of the upper mounting plate and the bottom of the L-shaped leg by tightening the nuts on the top of the central bolt respectively.

3. The vibration and noise reduction device for an open-frame oil engine in a vehicle-mounted shelter as claimed in claim 1 is characterized in that: The ratio of the center distance L1 of the shock absorber assembly to the length L2 of the L-shaped leg is: L1 / L2=0.38~0.

44.

4. The vibration and noise reduction device for an open-frame oil engine in a vehicle-mounted shelter as claimed in claim 2 is characterized in that: The rubber body has a hardness of 45HA, an elongation of 555.24%, and a tear strength of 16.25 MPa.

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