CN213384478U - Suspension subassembly and device before driver's cabin gasbag - Google Patents

Abstract

The application relates to a front suspension assembly and a front suspension device for an air bag of a cab, which relate to the technical field of automobiles and comprise a lower bracket, an upper bracket, an air bag, a bearing platform and a supporting piece, wherein the lower bracket is used for connecting a front bumper bracket; two ends of the air bag are respectively rotatably connected with the upper bracket and the lower bracket; the bearing table is arranged on the lower support and is provided with a first position; the propping piece is arranged at the bottom end of the upper bracket; and when the airbag is not inflated and the cab is overturned until the abutting piece abuts against the first position, a gap exists between the front bumper bracket and the air deflector, so that the front bumper bracket and the air deflector cannot interfere with each other and the overturn of the cab is not limited.

Description

Suspension subassembly and device before driver's cabin gasbag

Technical Field

The application relates to the technical field of automobiles, in particular to a front suspension assembly of an air bag of a cab and a device.

Background

At present, when a vehicle runs on a bumpy road surface, the impact of the road surface and the vibration of an engine can be transmitted to a cab through a suspension system connecting a chassis and the cab, and a poor vibration damping system can transmit most of the vibration of the chassis to the cab, so that a driver can feel uncomfortable and tired. In order to improve the comfort of the vehicle, a suspension device for damping vibration is usually additionally arranged between a frame and a cab, the suspension devices are less rigidly connected basically, and most of the suspension devices are suspension devices additionally provided with mechanical springs.

In the related art, an airbag suspension system is used for damping vibration of a cab, and as shown in fig. 1, the airbag suspension system comprises two suspension assemblies, each suspension assembly comprises an airbag 13, a roll-over arm, an upper bracket 11 and a lower bracket 10, and the two lower brackets 10 are connected through a balance rod; the top end of the air bag 13 is hinged with the upper bracket 11, and the bottom end is rotatably connected to the lower bracket 10; one end of the turnover arm is hinged with the air bag 13, and the other end of the turnover arm is rotatably connected to the balance bar; and the two lower brackets 10 are respectively arranged on a steering gear bracket of the main cab and a frame side wing surface of the auxiliary cab; the two upper brackets 11 are connected with the air deflectors 4 on the left side and the right side of the cab. The air bag is used as a vibration damping element, vibration is damped by compression and stretching of the air bag, so that the cab and the frame form flexible connection, the suspension system can have lower natural frequency, and the running smoothness and riding comfort of the whole vehicle are improved.

However, when the airbag 13 is not inflated, the upper bracket 11 sinks a large amount, and when the cab is to be repaired or the cab is to be overturned, the air guide plate 4 interferes with the front bumper bracket 2, so that the overturning angle of the cab is limited, and the need for overturning the cab during vehicle repair is reduced.

Disclosure of Invention

The embodiment of the application provides suspension subassembly and device before driver's cabin gasbag to solve among the correlation technique under the gasbag not aerify the condition upper bracket sinkage great, the maintenance vehicle, during the upset driver's cabin, lead to taking place to interfere between aviation baffle and the front bumper support of driver's cabin, limited the rotation angle of driver's cabin, the demand of upset driver's cabin when influence vehicle maintenance.

In a first aspect, a cab airbag front suspension assembly is provided, comprising:

a lower bracket for connecting the front bumper bracket;

the upper bracket is used for connecting an air deflector of a cab and is connected with the lower bracket through a turnover arm;

the two ends of the air bag are respectively and rotatably connected with the upper bracket and the lower bracket;

the bearing table is arranged on the lower support and provided with a first position;

the abutting piece is arranged at the bottom end of the upper bracket; and the number of the first and second groups,

when the airbag is not inflated and the cab is turned over until the abutting piece abuts against the first position, a gap exists between the front bumper bracket and the air deflector.

In some embodiments, the upper surface of the carrier is an arcuate surface protruding toward the upper support.

In some embodiments, the holding member is a roller.

In some embodiments, the first position is at the highest point of the carrier.

In some embodiments, the top surface of the susceptor is a half-arc surface.

In some embodiments, the carrier is formed by protruding the upper surface of the lower support.

In some embodiments, a second position is provided on the carrier, and the second position is higher than the first position; when the airbag is inflated and the cab is turned over until the abutting piece abuts against the bearing table, the intersection point of the abutting piece and the bearing table is located at the second position.

In some embodiments, when the cab is not overturned, a gap exists between the abutting piece and the bearing platform along the length direction of the vehicle body.

In some embodiments, the front suspension assembly of the air bag of the cab further comprises a lower limiting mechanism, wherein the lower limiting mechanism is arranged on the lower bracket and is used for limiting the sinking of the upper bracket.

In a second aspect, a front suspension device of a cab airbag is provided, which comprises two front suspension assemblies of the cab airbag, the two lower brackets are connected through a balance bar, and the overturning arm is fixedly connected to the balance bar.

The beneficial effect that technical scheme that this application provided brought includes: when the air bag is not inflated, the cab can sink, when the cab needs to be maintained, the cab is driven to turn over through the oil cylinder, an intersection point is formed between the motion trail of the abutting piece and the bearing platform, the intersection point is a first position, when the abutting piece turns over to the first position abutting on the bearing platform along with the air deflector, the abutting piece supports the air deflector, the sinking amount of the air deflector is limited, and compared with the condition that the abutting piece does not abut on the bearing platform, the position of the air deflector is lifted, so that the front bumper support and the air deflector cannot interfere with each other, and the turning over of the cab cannot be limited.

The embodiment of the application provides a front suspension assembly of an air bag of a cab and a device, because the bottom end of an upper support is provided with a supporting piece, a bearing platform is arranged on a lower support, when the air bag is not inflated, the cab can sink, when the cab needs to be maintained, the cab is driven to turn over through an oil cylinder, an intersection point is arranged between the motion track of the supporting piece and the bearing platform, the intersection point is a first position, when the supporting piece turns over to the first position supported on the bearing platform along with an air deflector, the supporting piece supports the air deflector, the sinking amount of the air deflector is limited, and therefore, when the supporting piece is not supported on the bearing platform, the position of the air deflector is lifted, so that the front bumper support and the air deflector cannot interfere, and the turning over of the cab cannot be limited.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view showing a structure of a related art when an airbag is not inflated and a cab is turned upside down;

FIG. 2 is a schematic structural diagram of a front suspension device of an air bag of a cab according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of the airbag of the present embodiment when the cab is inverted;

fig. 4 is a schematic structural diagram of the cab in the embodiment of the present application when the cab is not turned over.

In the figure: 10. a lower bracket; 11. an upper bracket; 12. a turning arm; 13. an air bag; 14. a bearing table; 140. a first position; 141. a second position; 15. a holding member; 16. a lower limit mechanism; 2. a front bumper bracket; 3. a balancing pole; 4. an air deflector.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example 1:

referring to fig. 2 and 3, embodiment 1 of the present application provides a front suspension assembly for an air bag of a cab, which includes a lower bracket 10 for connecting a front bumper bracket 2, and an upper bracket 11 for connecting an air deflector 4 of the cab, where the upper bracket 11 is connected to the lower bracket 10 through a roll-over arm 12, and two ends of the roll-over arm 12 are respectively connected to the upper bracket 11 and the lower bracket 10 in a rotating manner; the device also comprises a bearing table 14 and a propping piece 15, wherein the bearing table 14 is arranged on the lower bracket 10, and a first position 140 is arranged on the bearing table 14; the abutting piece 15 is arranged at the bottom end of the upper bracket 11; and when the airbag 13 is not inflated and the cab is turned over until the abutting piece 15 abuts on the first position 140, a gap exists between the front bumper bracket 2 and the air deflector 4 to prevent the front bumper bracket 2 and the air deflector 4 from interfering and limit the turning of the cab.

The operating principle of the cab air bag front suspension assembly in embodiment 1 of the application is as follows:

the abutting piece 15 is arranged at the bottom end of the upper support 11, the bearing table 14 is arranged on the lower support 10, when the air bag 13 is not inflated, the cab can sink, when the cab needs to be maintained, the cab is driven to turn over through the oil cylinder, an intersection point is formed between the motion track of the abutting piece 15 and the bearing table 14, the intersection point is a first position 140, when the abutting piece 15 turns over to the first position 140 abutting on the bearing table 14 along with the air deflector 4, the abutting piece 15 supports the air deflector 4, the sinking amount of the air deflector 4 is limited, and compared with the condition that the abutting piece 15 does not abut on the bearing table 14, the position of the air deflector 4 is lifted, so that the front bumper support 2 and the air deflector 4 cannot interfere with each other, and the turning of the cab cannot be limited.

Optionally, the upper surface of the carrier 14 is an arc-shaped surface protruding toward the upper support.

When the upper surface of the bearing platform 14 is an arc-shaped surface protruding towards the upper bracket, the first position 140 of the supporting part 15, which is supported between the supporting part and the bearing platform 14 after being overturned, is higher than the lower bracket 10, so that the air deflector 4 is lifted, a gap is formed between the front bumper bracket 2 and the air deflector 4, the front bumper bracket 2 and the air deflector 4 are prevented from interfering, and the overturn of the cab is limited.

Preferably, the holding member 15 is a roller.

The roller is matched with the arc-shaped surface, so that the contact area between the supporting piece 15 and the bearing platform 14 is increased, the supporting force of the bearing platform 14 on the upper bracket 11 is increased, the lifting of the upper bracket 11 is realized, and the abrasion between the supporting piece 15 and the bearing platform 14 is reduced.

Further, the first position 140 is located at the highest point of the carrier 14.

When the airbag 13 is not inflated and the cab is turned over, the abutting piece 15 abuts against the highest point of the bearing platform 14 to lift the air deflector 4 to the maximum extent, the gap between the front bumper bracket 2 and the air deflector 4 is the largest, and the front bumper bracket 2 and the air deflector 4 cannot interfere with each other.

Furthermore, the top surface of the platform 14 is a half arc surface.

When the airbag 13 is not inflated and the cab is turned over, the intersection point of the movement track of the abutting piece 15 and the bearing platform 14 is located at the highest point of the half arc surface, so that the effect of lifting the upper support 11 is achieved.

Preferably, the platform 14 is formed by protruding the upper surface of the lower frame 10.

The carrier 14 is integrally formed with the lower bracket 10, thereby improving the manufacturing efficiency of the air bag front suspension assembly of the cab. The bearing table 14 is made of rubber materials, and the bearing table is in elastic contact with the abutting piece 15, so that the bearing table 14 and the abutting piece 15 are prevented from being damaged.

Further, referring to fig. 3, a second position 141 is provided on the carrier 14, and the second position 141 is higher than the first position 140; when the airbag 13 is inflated and the cab is turned over until the abutting member 15 abuts against the bearing platform 14, the intersection point of the abutting member 15 and the bearing platform 14 is located at the second position 141.

After the airbag 13 is inflated, the upper bracket 11 is lifted up compared to when the airbag 13 is not inflated, so that after the airbag 13 is inflated and the cab is turned over until the abutting member 15 abuts against the bearing platform 14, the intersection point of the abutting member 15 and the bearing platform 14 is higher than the first position 140. When the airbag 13 is inflated, the retainer 15 is retained on the platform 14 when the cab is turned over, thereby preventing the airbag 13 from being stretched.

Further, as shown in fig. 4, when the cab is not tilted, a gap exists between the abutting member 15 and the platform 14 along the length direction of the vehicle body.

When the cab is not overturned, if a vehicle runs on a bumpy road, the cab can move up and down, the air bag 13 plays a role in vibration reduction, a gap exists between the abutting piece 15 and the bearing platform 14 along the length direction of the vehicle body, and when the abutting piece 15 moves up and down along with the upper support 11, the abutting piece cannot contact with the bearing platform 14, the expansion and contraction of the air bag 13 cannot be influenced, and the vibration reduction effect is not influenced.

Optionally, referring to fig. 2, the front suspension assembly of the air bag in the cab further includes a lower limit mechanism 16, and the lower limit mechanism 16 is disposed on the lower bracket 10 and is used for limiting the sinking of the upper bracket 11.

The lower limiting mechanism 16 is a rubber seat, and when the cab is not turned over, if the vehicle runs on a bumpy road and the airbag 13 is not inflated, the cab sinks, and the lower limiting mechanism 16 plays a role in limiting the sinking amount of the cab.

Example 2:

referring to fig. 2, embodiment 2 of the present application provides a cab airbag front suspension device, which includes two cab airbag front suspension assemblies, two lower brackets 10 connected by a stabilizer bar 3, and a roll-over arm 12 connected to the stabilizer bar 3. The tilting arm 12 rotates together with the stabilizer bar 3 about the lower bracket 10.

In the cab air bag front suspension device in embodiment 2 of the present application, the abutting pieces 15 are respectively arranged at the bottom ends of the two upper brackets 11, the bearing platforms 14 are respectively arranged on the two lower brackets 10, when the air bag 13 is not inflated, the cab sinks, and when the cab needs to be maintained, the cab is driven to turn over by the oil cylinder, an intersection point exists between the movement track of the abutting piece 15 and the bearing platform 14, the intersection point is the first position 140, when the abutting piece 15 turns over to the first position 140 abutting on the bearing platform 14 along with the air deflector 4, the abutting piece 15 supports the air deflector 4, the sinking amount of the air deflector 4 is limited, and when the abutting piece 15 does not abut on the bearing platform 14, the position of the air deflector 4 is lifted, so that the front bumper bracket 2 and the air deflector 4 do not interfere with each other, and the turning over of the cab is not limited.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A cab airbag front suspension assembly, comprising:

a lower bracket (10) for connecting the front bumper bracket (2);

the upper bracket (11) is used for connecting an air deflector (4) of a cab, and the upper bracket (11) is connected with the lower bracket (10) through a turnover arm (12);

the two ends of the air bag (13) are respectively and rotatably connected with the upper bracket (11) and the lower bracket (10);

the bearing table (14) is arranged on the lower support (10), and a first position (140) is arranged on the bearing table (14);

the abutting piece (15) is arranged at the bottom end of the upper bracket (11); and the number of the first and second groups,

when the air bag (13) is not inflated and the cab is turned over until the abutting piece (15) abuts against the first position (140), a gap exists between the front bumper bracket (2) and the air deflector (4).

2. A cab airbag front suspension assembly as set forth in claim 1 wherein the upper surface of the carrier (14) is a curved profile that projects toward the upper bracket.

3. A cab airbag front suspension assembly according to claim 2, wherein the abutment (15) is a roller.

4. A cab airbag front suspension assembly as set forth in claim 2 wherein said first position (140) is at the highest point of the carrier (14).

5. A cab air bag front suspension assembly according to claim 2 wherein the upper surface of the carrier (14) is a half arc surface.

6. A cab airbag front suspension assembly according to claim 2 wherein the platform (14) is formed by a raised upper surface of the lower bracket (10).

7. A cab airbag front suspension assembly as defined in claim 1 wherein a second position (141) is provided on the carrier (14), the second position (141) being higher than the first position (140); when the air bag (13) is inflated and the cab is turned over until the abutting piece (15) abuts against the bearing platform (14), the intersection point of the abutting piece (15) and the bearing platform (14) is located at the second position (141).

8. A cab air bag front suspension assembly according to claim 1, wherein a gap exists between the abutting member (15) and the load carrier (14) in a length direction of a vehicle body when the cab is not turned.

9. A cab air bag front suspension assembly according to claim 1, further comprising a lower limit mechanism (16), said lower limit mechanism (16) being provided on said lower bracket (10) and being adapted to limit the sinking of said upper bracket (11).

10. A cab air bag front suspension arrangement, characterized in that it comprises two cab air bag front suspension assemblies according to claim 1, the two lower brackets (10) being connected by a stabilizer bar (3), and the tilt arm (12) being fixedly connected to the stabilizer bar (3).

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