CN105172565B - commercial vehicle engine fixing device - Google Patents

Abstract

The invention discloses a commercial vehicle engine fixing device, which comprises a longitudinal beam internal reinforcement plate (1), a suspension bracket (3) and an engine suspension (5), and one side of the longitudinal beam internal reinforcement plate (1) is used for The inner side of the longitudinal beam of the commercial vehicle is fixedly connected, and its other side is connected with the vertical arm of the suspension bracket (3). The engine suspension (5) is fixed on the horizontal arm of the suspension bracket (3), and its free end is used to connect with the engine. The engine fixing device of the invention can make the engine sink during collision, reduce or prevent the engine from intruding into the cab, and improve the passive safety of the vehicle.

Description

Commercial vehicle engine mounts

technical field

The invention belongs to the technical field of automobile safety protection equipment, in particular to a commercial vehicle engine fixing device capable of sinking the engine during a collision, reducing or preventing the engine from intruding into the cab, and improving the passive safety of the vehicle.

Background technique

In vehicle collision safety, the living space of the cab is crucial. Generally, the front of the engine of a passenger car also has a corresponding concave design so that when the vehicle collides, the engine sinks or falls to the ground, so as to avoid intruding into the passenger compartment and affecting the living space of the occupants. In ordinary commercial vehicles, the engine is at the rear and lower part of the passenger compartment. During the collision process, the longitudinal beam collapses, and the engine will invade the floor of the cab due to inertia, which increases the degree of deformation of the cab and seriously affects the safety of the driver. living space.

Therefore, the problem existing in the prior art is: the commercial vehicle engine fixing device easily causes the engine to directly intrude into the driver's cabin during a collision, and the passive safety of the vehicle is poor.

Contents of the invention

The purpose of the present invention is to provide a commercial vehicle engine fixing device, which can make the engine sink during a collision, reduce or avoid the engine from intruding into the cab, and improve the passive safety of the vehicle.

The technical solution that realizes the object of the present invention is:

A commercial vehicle engine fixing device, comprising a longitudinal beam inner reinforcement plate, a suspension bracket and an engine suspension, one side of the longitudinal beam inner reinforcement plate is used for fixed connection with the inner side of the commercial vehicle longitudinal beam, and the other side is connected with the suspension The vertical arm of support is connected, and described engine suspension is fixed on the horizontal arm of suspension support, and its free end is used for being connected with engine, and the vertical arm of described suspension support is fixedly connected with horizontal arm.

Preferably, the inner reinforcing plate of the longitudinal beam is connected to the vertical arm of the suspension bracket through a cylindrical hinge and a bolt, the hinge is close to the lower side of the inner reinforcing plate of the longitudinal beam, and the bolt is close to the upper side of the inner reinforcing plate of the longitudinal beam , an arc-shaped induction groove is provided on the inner reinforcement plate of the longitudinal beam, the induction groove is centered on the hinge, the starting end is close to the bolt, and the terminal is facing the front of the commercial vehicle.

Compared with the prior art, the present invention has significant advantages:

The engine sinking structure of commercial vehicles ensures the structural strength of the fixing device of the engine when the vehicle is running normally, and ensures the structural strength of the engine fixing device by designing the shape of the arc-shaped inner guide groove on the inner plate of the longitudinal beam and the position relative to the bolt hole Process The engine sinks along the track of the induction groove with the cylindrical hinge as the center of rotation, reducing the displacement of the engine along the direction of the longitudinal beam, reducing the intrusion into the cab floor, increasing the living space of the cab, and passing The width of the induction groove decreases, the bolts and the induction groove are squeezed, the reinforcement plate in the longitudinal beam is deformed, energy is absorbed, and the passive safety performance of the vehicle is improved.

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a schematic structural view of a commercial vehicle engine fixing device of the present invention.

Fig. 2 is a structural schematic diagram of the inner reinforcing plate of the longitudinal beam in Fig. 1 .

In the figure, 1 longitudinal beam inner reinforcement plate, 2 induction groove, 3 suspension bracket, 31 baffle plate, 4 rubber block, 5 motor suspension, 6 hinge, 7 bolt.

detailed description

As shown in Figure 1, the commercial vehicle engine fixing device of the present invention includes a longitudinal beam internal reinforcement plate 1, a suspension bracket 3 and an engine suspension 5, and one side of the longitudinal beam internal reinforcement plate 1 is used to connect with the inner side of the commercial vehicle longitudinal beam. Fixedly connected, its other side is connected with the vertical arm of suspension bracket 3, and described engine suspension 5 is fixed on the horizontal arm of suspension bracket 3, and its free end is used for being connected with engine, and described suspension bracket 3 The vertical arm and the horizontal arm are fixedly connected.

The inner reinforcing plate 1 of the longitudinal beam is connected with the vertical arm of the suspension bracket 3 through a cylindrical hinge 6 and a bolt 7, the hinge (6) is close to the lower side of the inner reinforcing plate 1 of the longitudinal beam, and the bolt 7 is close to the longitudinal On the upper side of the beam internal reinforcement plate 1, an arc-shaped induction groove 2 is provided on the longitudinal beam internal reinforcement plate 1, the induction groove 2 is centered on the hinge 6, the starting end is close to the bolt 7, and the terminal is facing the commercial vehicle ahead.

As shown in FIG. 2 , the width of the induction groove 2 gradually decreases from the starting end to the terminal end, and the width at the starting end is equal to the diameter of the bolt 7 .

When the vehicle collides, due to the stress concentration at the arc-shaped induction groove 2 and the low rigidity, deformation occurs first. When the impact energy is large enough, the bolt 7 cuts off the plate of the bolt hole and the arc-shaped induction groove, thereby guiding the engine It moves along the arc-shaped induction groove to control the movement trajectory of the engine to make it sink, reduce or avoid the intrusion of the engine into the cab, and increase the living space of the driver and passengers. And the degree of gradual change in the width of the arc-shaped induction groove determines the absorption of the inertial energy of the engine by the suspension bracket.

The degree of gradual change in the width of the different arc-shaped induction grooves 2 can affect the speed of the trajectory running of the engine and the absorption of energy.

The distance between the arc-shaped induction groove 2 and the bolt hole 9 can be designed according to different models, which determines the minimum impact energy for the bolt 7 to shear the plate between the induction groove and the bolt hole, that is, determines the minimum impact energy for the engine to sink .

As an optimization, there are two bolts 7 arranged in an isosceles triangle with the hinge 6 .

Therefore, when the vehicle does not collide, the 3-point connection arrangement can ensure that the engine is firmly and effectively fixed.

Claims (2)

1. a kind of commercial vehicle engine fixing device, including reinforcing plate (1), mounting bracket (3) and engine mounting in longeron (5), reinforcing plate (1) side is used to be fixedly connected with commercial car side rail inner in the longeron, its opposite side and mounting bracket (3) Vertical arm connection, the engine mounting (5) is fixed on the horizontal arm of mounting bracket (3), and its free end is used for starting Machine is connected；

Reinforcing plate (1) is connected with the vertical arm of mounting bracket (3) by a cylindrical hinge (6) and bolt (7) in the longeron, The hinge (6) is on the downside of reinforcing plate (1) in longeron, and the bolt (7) is on the upside of reinforcing plate (1) in longeron, its feature It is：

It is described to induce groove (2) with the hinge (6) for the center of circle provided with circular arc induction groove (2) in reinforcing plate (1) in longeron, Origin or beginning is close to the bolt (7), and terminal is towards in front of commercial car；

The width of the induction groove (2) is gradually reduced from origin or beginning to terminal, and its origin or beginning width is equal to the diameter of the bolt (7).

2. commercial vehicle engine fixing device according to claim 1, it is characterised in that：The bolt (7) is two, with The hinge (6) arranges into isosceles triangle.