CN116278568A - Cab rear suspension pressure lock, rear suspension support structure and suspension assembly - Google Patents
Cab rear suspension pressure lock, rear suspension support structure and suspension assembly Download PDFInfo
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- CN116278568A CN116278568A CN202310469415.2A CN202310469415A CN116278568A CN 116278568 A CN116278568 A CN 116278568A CN 202310469415 A CN202310469415 A CN 202310469415A CN 116278568 A CN116278568 A CN 116278568A
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- air bag
- rear suspension
- damper
- bracket
- suspension
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- 239000000725 suspension Substances 0.000 title claims abstract description 214
- 239000006096 absorbing agent Substances 0.000 claims abstract description 59
- 230000035939 shock Effects 0.000 claims abstract description 58
- 230000002093 peripheral effect Effects 0.000 claims abstract description 30
- 238000010030 laminating Methods 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 11
- 239000003381 stabilizer Substances 0.000 claims description 9
- 230000007306 turnover Effects 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 210000004712 air sac Anatomy 0.000 description 7
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/005—Suspension locking arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
- B60G15/08—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring
- B60G15/12—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring and fluid damper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention relates to the technical field of commercial vehicle cab suspension systems, in particular to a cab rear suspension pressure lock, a rear suspension bracket structure and a suspension assembly, which comprise a shell, a limiting structure arranged at the bottom of the shell and a hydraulic lock arranged in the shell; the shell is used for being hinged with one end of the transverse shock absorber, the hydraulic lock is used for connecting the rear suspension upper bracket to the top end of the shell, and the bottom of the shell is used for being hinged with the upper lifting lug of the first air bag shock absorber; the limit structure is used for being matched with the outer peripheral surface of the upper cover of the first air bag damper so as to limit the rotation of the first air bag damper around the hinge point of the upper lifting lug of the first air bag damper, so that the problem that the conventional rear suspension pressure lock generates rotary motion around the center of the upper lifting lug of the air bag damper due to jolt in the running process of a vehicle, the collision and friction between the lock body guide groove and the lock pin of the rear suspension upper bracket are aggravated, abnormal sound is generated, and the abrasion between the lock body guide groove and the lock pin of the rear suspension upper bracket is aggravated.
Description
Technical Field
The invention relates to the technical field of commercial vehicle cab suspension systems, in particular to a cab rear suspension pressure lock, a rear suspension bracket structure and a suspension assembly.
Background
The rear suspension pressure lock of the cab is a locking mechanism which is arranged on the frame and is used for connecting the rear end of the cab with the frame or disconnecting the rear end of the cab from the frame, a group of air bag shock absorbers and a group of transverse shock absorbers are usually connected between the conventional rear suspension pressure lock and the frame, so that the influence of various vibrations from an engine and the ground on the cab during driving is reduced through the air bag shock absorbers and the transverse shock absorbers, and the comfort and the safety of riding and driving of the cab are improved;
the existing rear suspension pressure lock is connected between the cab and the rear suspension pressure lock in a mode that a lock pin of a rear suspension upper bracket fixedly connected with the cab is locked in a lock body guide groove at the top end of the rear suspension pressure lock through a hydraulic lock; existing rear suspension pressure locks are generally provided with side mounting points and lower mounting points;
the side mounting point links to each other with lug on the transverse damper, and the below mounting point links to each other with lug on the gasbag damper, because transverse damper has certain stroke in the motion in side direction, jolt that the vehicle produced in-process of traveling can make current back suspension pressure lock produce the rotary motion around lug center on the gasbag damper, makes collision and friction between lock body guide way and the lockpin of back suspension upper bracket aggravate, produces abnormal sound, still can aggravate wearing and tearing between lock body guide way and the lockpin of back suspension upper bracket.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the cab rear suspension pressing lock, the rear suspension bracket structure and the suspension assembly to solve the technical problems that the conventional rear suspension pressing lock generates rotary motion around the center of the lifting lug on the air bag damper, collision and friction between the lock body guide groove and the lock pin of the rear suspension upper bracket are aggravated, abnormal sound is generated and abrasion between the lock body guide groove and the lock pin of the rear suspension upper bracket is aggravated by jolt generated in the running process of a vehicle.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a rear suspension pressure lock of a cab comprises a shell, a limiting structure arranged at the bottom of the shell and a hydraulic lock arranged in the shell;
the shell is used for being hinged with one end of the transverse shock absorber, the hydraulic lock is used for connecting the rear suspension upper bracket to the top end of the shell, and the bottom of the shell is used for being hinged with an upper lifting lug of the first air bag shock absorber;
the limiting structure is used for being matched with the peripheral surface of the upper cover of the first air bag damper so as to limit the rotation of the first air bag damper around the hinge point of the upper lifting lug of the first air bag damper.
Through setting up limit structure, through limit structure with the outer peripheral face of the upper cover of first air bag shock absorber cooperatees, is in order to restrict first air bag shock absorber is around the rotation of the pin joint of the last lug of first air bag shock absorber, has solved the jolt that the vehicle in-process produced and can make current back suspension pressure lock produce the rotary motion around the lug center on the air bag shock absorber, makes collision and the friction between lock pin and the back suspension upper bracket aggravate, produces abnormal sound, still can aggravate the technical problem of wearing and tearing between lock body guide way and the lock pin of back suspension upper bracket.
Further, the limiting structure is encircling on the outer peripheral surface of the upper cover of the first air bag shock absorber; the limiting structure is used for encircling the side surface of the outer peripheral surface of the upper cover of the first air bag shock absorber to be the same as the shape of the outer peripheral surface of the upper cover of the first air bag shock absorber.
The shape of the side surface (i.e., the inner side surface) of the upper cover for encircling the first air bag damper is determined according to the shape of the outer peripheral surface of the upper cover for encircling the first air bag damper, and the shape of the side surface (i.e., the outer side surface) of the upper cover for encircling the first air bag damper is not limited.
Further, a U-shaped groove matched with a rear suspension locking pin shaft of the rear suspension upper bracket is formed in the top of the shell; the hydraulic lock is used for locking the rear suspension locking pin shaft in the U-shaped groove.
Further, the bottom of shell is formed with be used for with the laminating of the top face of the upper cover of first air bag shock absorber, limit structure form in on the laminating, still be formed with the intercommunication on the laminating the inside installing port of shell, the installing port is used for the upper lug of first air bag shock absorber penetrates the inside of shell.
Through setting up the binding face, make through first air sac damper absorbs and weakens the back follow the axial of first air sac damper to the last lug of first air sac damper with the surplus impact force of back suspension pressure lock's pin joint transmission can be through the upper cover of first air sac damper is shared to on the binding face, reduce this surplus impact force is to the impact of the last lug of first air sac damper with the pin joint of back suspension pressure lock reduces the wearing and tearing of the last lug of first air sac damper with the pin joint of back suspension pressure lock.
Further, the shell comprises two side plates which are oppositely arranged and connected in a riveting way, and an accommodating space for accommodating the hydraulic lock, the upper lifting lug of the first air bag damper and one end of the transverse damper is formed between the two side plates;
the bottom of the side plate extends to a direction far away from the other side plate to form a flanging, and the two flanging form the joint surface.
Further, the limiting structure comprises at least one protruding portion formed on the attaching face and arranged along the circumferential direction of the upper cover, and an arc-shaped face for attaching to the outer circumferential face of the upper cover is formed on the protruding portion.
When the number of the protruding parts is one, the protruding parts are in a hollow column shape (including but not limited to an annular shape, a hollow column shape, a hollow straight prism shape and the like), and the inner peripheral surface of the protruding parts is matched with the outer peripheral surface of the upper cover.
When the number of the protruding parts is multiple, the protruding parts are arranged at intervals along the circumferential direction of the upper cover.
Preferably, when the number of the protruding portions is plural, the protruding portions are uniformly distributed along the circumferential direction of the upper cover.
Further, a rubber buffer layer is arranged on the joint surface and is used for being abutted to the top end surface of the upper cover.
Through setting up the rubber buffer layer, make among the above-mentioned surplus impact force split to the laminating face the part can by the rubber buffer layer absorbs, weakens, avoids the upper cover of first air bag shock absorber with because of striking produces damage or deformation between the laminating face, also can reduce the upper cover of first air bag shock absorber with striking abnormal sound between the laminating face further promotes the NVH performance of vehicle.
Furthermore, the rear suspension pressure lock for the cab provided by the invention further comprises an alarm unit and a position sensor arranged on the hydraulic lock, wherein the position sensor is used for sending alarm information to the alarm unit when the hydraulic lock is unlocked, and the alarm unit is used for sending out an audible alarm or a lamplight alarm when receiving the alarm information.
The invention also provides a rear suspension bracket structure which comprises a rear suspension upper bracket fixedly connected with the bottom end and/or the rear end of the cab, a connecting bracket fixedly connected with the frame, a first air sac damper, a transverse damper and the cab rear suspension pressure lock provided by the invention;
the rear suspension upper bracket is connected to the top of the shell through the hydraulic lock;
the upper lifting lug of the first air bag damper is hinged to the bottom of the shell, and the outer peripheral surface of the upper cover of the first air bag damper is matched with the limiting structure so as to limit the rotation of the first air bag damper around the upper lifting lug of the first air bag damper;
the lower lifting lug of the first air bag damper is hinged with the bottom end of the connecting support, the transverse damper is obliquely arranged, one end of the transverse damper is hinged on the shell, and the other end of the transverse damper is arranged at the top end of the connecting support.
The invention also provides a suspension assembly, which comprises a front suspension bracket unit and two rear suspension bracket structures provided by the invention, wherein the two rear suspension bracket structures are symmetrically arranged left and right;
the front suspension bracket unit comprises a transverse stabilizer bar and two front suspension bracket structures which are symmetrically arranged left and right;
the front suspension support structure comprises a turning arm, a front suspension upper support, a second air bag damper and a damper support;
the upper lifting lug of the second air bag damper and the first end part of the turnover arm are both hinged to the bottom end of the front suspension upper bracket, and the front suspension upper bracket is used for being fixedly connected with the front end and/or the bottom end of the cab;
the second end part of the turning arm is used for being hinged with the frame; the transverse stabilizer bar is fixedly connected between the two overturning arms;
the shock absorber support is fixedly connected to the frame, and the lower lifting lug of the second air bag shock absorber is hinged to the shock absorber support.
Further, the front suspension bracket structure further comprises a front suspension lower bracket, the rear suspension bracket structure further comprises a rear suspension lower bracket, the front suspension lower bracket is fixedly connected to the frame, and the second end of the turning arm is hinged with the front suspension lower bracket;
the top end of the rear suspension lower bracket is fixedly connected with the connecting bracket, and the rear suspension lower bracket is fixedly connected with the frame.
The suspension assembly provided by the invention can adapt to various height differences between cabs and frames in various types of vehicles by arranging the front suspension lower bracket and the rear suspension lower bracket, or by arranging the adjusting structure (a plurality of adjusting mounting holes are formed in the front suspension lower bracket, the shock absorber support and the rear suspension lower bracket along the height direction), and adjusting the mounting positions of the front suspension lower bracket, the shock absorber support and the rear suspension lower bracket on the frames along the height direction.
Further, the suspension assembly also comprises a pressure sensor and an alarm; the pressure sensor is arranged on a nut of a compression bolt at a hinge point of the second end part of the turning arm and the front suspension lower bracket, and is positioned between the nut and the front suspension lower bracket, the alarm is electrically connected with the pressure sensor, and the pressure sensor is used for sending compression force information representing the compression force value of the nut on the front suspension lower bracket to the alarm.
Through setting up pressure sensor with the alarm (wherein, the alarm sets up on the automobile body can, including but not limited to the alarm sets up on the instrument desk of driver's cabin inside), through pressure sensor real-time detection the nut is to the hold-down force value of front overhang lower carriage, when detecting that hold-down force value exceeds the hold-down force value range of predetermineeing (being greater than the maximum value of predetermineeing hold-down force value range, or is less than the minimum value of predetermineeing hold-down force value range promptly), the alarm can send the warning instruction to the driver through measures such as sound or light efficiency, and suggestion driver is in time to hold-down bolt's tightening torque avoids because of hold-down bolt's tightening torque decay inequality is the abnormal sound problem that causes after the pine takes place.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of a rear suspension lock in example 1;
FIG. 2 is a schematic perspective view of a rear suspension bracket structure in an embodiment;
fig. 3 is a schematic perspective view of the first air bag damper in embodiment 2;
fig. 4 is a schematic perspective view of a rear suspension bracket in embodiment 2;
FIG. 5 is a schematic perspective view of a suspension assembly in embodiment 3;
FIG. 6 is a schematic view showing the assembled structure of the front suspension bracket structure, the stabilizer bar, the pressure sensor and the alarm in embodiment 3;
fig. 7 is a schematic perspective view of a front suspension upper bracket in embodiment 3;
fig. 8 is a schematic diagram of the assembled structure of the stabilizer bar and the invert arm in embodiment 3;
FIG. 9 is a schematic perspective view of a shock absorber mount in embodiment 3;
fig. 10 is a schematic perspective view of a front suspension subframe in embodiment 3;
fig. 11 is a schematic perspective view of a rear suspension bracket in embodiment 3;
1-rear suspension support structure, 2-front suspension support structure, 3-transverse stabilizer bar, 4-pressure sensor, 5-alarm and 6-compression bolt;
11-a cab rear suspension pressure lock, 12-a rear suspension upper bracket, 13-a connecting bracket, 14-a first air bag shock absorber, 15-a transverse shock absorber and 16-a rear suspension lower bracket;
111-a shell, 112-a limiting structure, 113-a hydraulic lock and 114-a U-shaped groove;
111.1-bonding surface;
121-rear wall mounting plates, 122-rear suspension floor longitudinal beam mounting plates, 123-rear suspension locking pin shafts and 124-locking pin shaft brackets;
141-upper lifting lugs of the first air bag damper, 142-upper covers of the first air bag damper, 143-lower lifting lugs of the first damper;
21-an overturning arm, 22-a front suspension upper bracket, 23-a second air bag damper, 24-a damper support and 25-a front suspension lower bracket;
211-a rotating shaft;
221-front wall mounting plates, 222-front suspension floor longitudinal beam mounting plates, 223-shock absorber connecting seats, 224-rotating shaft connecting seats.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the examples described are only some, but not all, examples of the present invention.
Example 1:
as shown in fig. 1 and 2, embodiment 1 provides a rear suspension lock 11 for a cab, which includes a housing 111, a limit structure 112 disposed at the bottom of the housing 111, and a hydraulic lock 113 disposed in the housing 111;
the shell 111 is used for being hinged with one end of the transverse shock absorber 15, the hydraulic lock 113 is used for connecting the rear suspension upper bracket 12 to the top end of the shell 111, and the bottom of the shell 111 is used for being hinged with an upper lifting lug of the first air bag shock absorber 14;
the limiting structure 112 is configured to cooperate with an outer peripheral surface of the upper cover 142 of the first air bag damper to limit rotation of the first air bag damper 14 about a hinge point of the upper lifting lug of the first air bag damper 14.
Through setting up limit structure 112, cooperate with the outer peripheral face of the upper cover 142 of first air bag shock absorber through limit structure 112 to restrict the rotation of the pin joint of the upper lug of first air bag shock absorber 14 around first air bag shock absorber 14, solved the jolt that the vehicle in-process produced and can make current back suspension pressure lock produce the rotary motion around the upper lug center of air bag shock absorber, make collision and friction between lock body guide way and the lockpin of back suspension upper bracket aggravate, produce abnormal sound, still can aggravate the technical problem of wearing and tearing between lock body guide way and the lockpin of back suspension upper bracket.
In summary, as shown in fig. 1 and 2, the limiting structure 112 is surrounded on the outer peripheral surface of the upper cover 142 of the first air bag damper; the side surface of the limiting structure 112, which is used for encircling the outer peripheral surface of the upper cover 142 of the first air bag damper, is the same as the shape of the outer peripheral surface of the upper cover 142 of the first air bag damper.
The shape of the side surface of the limiting structure 112 that is used to encircle the outer peripheral surface of the upper cover 142 of the first air bag damper (i.e., the inner side surface of the limiting structure 112) is determined according to the shape of the outer peripheral surface of the upper cover 142 of the first air bag damper, and the shape of the side surface of the limiting structure 112 that is not used to encircle the outer peripheral surface of the upper cover 142 of the first air bag damper (i.e., the outer side surface of the limiting structure 112) is not limited.
In this embodiment 1, as shown in fig. 1, a U-shaped groove 114 matching with the rear suspension locking pin 123 of the rear suspension upper bracket 12 is formed on the top of the housing 111; the hydraulic lock 113 is used to lock the rear suspension locking pin 123 in the U-shaped groove 114.
As shown in fig. 1, a bonding surface 111.1 for bonding with a top end surface of an upper cover 142 of the first air bag damper is formed at a bottom end of the housing 111, a limit structure 112 is formed on the bonding surface 111.1, and a mounting opening communicating with an inside of the housing 111 is further formed on the bonding surface 111.1, wherein the mounting opening is used for penetrating an upper lifting lug 141 of the first air bag damper into the inside of the housing 111.
By arranging the bonding surface 111.1, residual impact force which is absorbed and weakened by the first air bag damper 14 and then transmitted to the hinge point of the upper lifting lug of the first air bag damper 14 and the rear suspension pressure lock along the axial direction of the first air bag damper 14 can be shared on the bonding surface 111.1 through the upper cover 142 of the first air bag damper, so that impact of the residual impact force to the hinge point of the upper lifting lug of the first air bag damper 14 and the rear suspension pressure lock is reduced, and abrasion of the hinge point of the upper lifting lug of the first air bag damper 14 and the rear suspension pressure lock is reduced.
Wherein, as shown in fig. 1, the outer shell 111 comprises two side plates which are oppositely arranged and connected in a riveting way, and an accommodating space for accommodating the hydraulic lock 113, the upper lifting lug 141 of the first air bag damper and one end of the transverse damper 15 is formed between the two side plates;
the bottom ends of the side plates extend to a direction far away from the other side plate to form turned edges, and the two turned edges form an attaching surface 111.1.
As shown in fig. 1, the limiting structure 112 includes at least one protruding portion formed on the attaching surface 111.1 and disposed along a circumferential direction of the upper cover 142 of the first air bag damper, and an arc surface for attaching to an outer peripheral surface of the upper cover 142 of the first air bag damper is formed on the protruding portion.
When the number of the protruding parts is one, the protruding parts are in a hollow column shape (including but not limited to an annular shape, a hollow column shape, a hollow straight prism shape and the like), and the inner peripheral surface of the protruding parts is matched with the outer peripheral surface of the upper cover 142 of the first air bag damper.
When the number of the protruding portions is plural, the protruding portions are disposed at intervals along the circumferential direction of the upper cover 142 of the first air bag damper.
Preferably, when the number of the protruding portions is plural, the plurality of protruding portions are uniformly distributed along the circumferential direction of the upper cover 142 of the first air bag damper.
Specifically, in this embodiment 1, as shown in fig. 1, since the two flanges form the fitting surface 111.1, the number of the protrusions is two, the two protrusions are symmetrically arranged, each flange is provided with one protrusion, the protrusions are arc-shaped plate-like, and the protrusions are formed with an intrados surface for fitting with the outer peripheral surface of the upper cover.
In embodiment 1, a rubber buffer layer (not shown) is provided on the bonding surface 111.1, and the rubber buffer layer is used to abut against the top end surface of the upper cover 142 of the first air bag damper.
Through setting up the rubber buffer layer, make among the above-mentioned surplus impact force share to the laminating face 111.1 the part can be absorbed by the rubber buffer layer and weaken, avoid producing damage or deformation because of striking between upper cover 142 and the laminating face 111.1 of first air bag shock absorber, also can reduce the striking abnormal sound between upper cover 142 and the laminating face 111.1 of first air bag shock absorber, further promote the NVH performance of vehicle.
The post-cab suspension lock 11 provided in embodiment 1 further includes an alarm unit and a position sensor disposed on the hydraulic lock 113, where the position sensor is configured to send alarm information to the alarm unit when the hydraulic lock 113 is unlocked, and the alarm unit is configured to send out an audible alarm or a light alarm when the alarm information is received.
Example 2:
as shown in fig. 1, 2 and 3, based on the cab rear suspension lock 11 provided in embodiment 1, embodiment 2 provides a rear suspension bracket structure 1 including a rear suspension upper bracket 12 for fixedly connecting with the bottom end and/or rear end of the cab, a connecting bracket 13 for fixedly connecting with the frame, a first air bag damper 14, a lateral damper 15, and the cab rear suspension lock 11 provided according to embodiment 1;
the rear suspension upper bracket 12 is connected to the top of the outer shell 111 through a hydraulic lock 113;
the upper lifting lug 141 of the first air bag damper is hinged to the bottom of the shell 111, and the outer peripheral surface of the upper cover 142 of the first air bag damper is matched with the limiting structure 112 so as to limit the rotation of the first air bag damper 14 around the upper lifting lug 141 of the first air bag damper;
the lower lifting lug 143 of the first air bag damper is hinged with the bottom end of the connecting support 13, the transverse damper 15 is obliquely arranged, one end of the transverse damper 15 is hinged on the shell 111, and the other end of the transverse damper 15 is arranged at the top end of the connecting support 13.
As shown in fig. 4, the rear suspension upper bracket 12 includes a vertically disposed rear wall mounting plate 121, a horizontally disposed rear suspension floor stringer mounting plate 122, a locking pin shaft bracket 124 fixedly connected to the bottom end of the rear suspension floor stringer mounting plate 122, and a rear suspension locking pin shaft 123 fixedly connected to the locking pin shaft bracket 124;
the bottom end of the rear wall mounting plate 121 is fixedly connected with the rear end of the rear suspension floor longitudinal beam mounting plate 122;
the locking pin shaft bracket 124 includes two side plates disposed opposite to each other, and the rear suspension locking pin shaft 123 is fixedly connected between the two side plates of the locking pin shaft bracket 124.
The hydraulic lock 113 is used to lock the rear suspension locking pin 123 in the U-shaped groove 114.
Example 3:
as shown in fig. 5, based on the rear suspension bracket structure 1 provided in embodiment 2, embodiment 3 provides a suspension assembly including a front suspension bracket unit and two rear suspension bracket structures 1 provided according to the present invention, the two rear suspension bracket structures 1 being disposed symmetrically left and right;
the front suspension bracket unit comprises a transverse stabilizer bar 3 and two front suspension bracket structures 2 which are symmetrically arranged left and right;
as shown in fig. 6 and 9, the front suspension bracket structure 2 includes an inversion arm 21, a front suspension upper bracket 22, a second air bag damper 23, and a damper mount 24;
the upper lifting lug of the second air bag damper 23 and the first end part of the turning arm 21 are both hinged to the bottom end of the front suspension upper bracket 22, and the front suspension upper bracket 22 is used for being fixedly connected with the front end and/or the bottom end of the cab;
a second end of the flip arm 21 is adapted for hinged connection with the frame; the transverse stabilizer bar 3 is fixedly connected between the two overturning arms 21;
the damper support 24 is fixedly connected to the frame, and the lower lifting lug of the second air bag damper 23 is hinged to the damper support 24.
As shown in fig. 7, the front suspension upper bracket 22 includes a vertically arranged front wall mounting plate 221, a horizontally arranged front suspension floor longitudinal beam mounting plate 222, a shock absorber connecting seat 223 and a rotating shaft connecting seat 224 fixedly connected to the bottom ends of the front suspension floor longitudinal beam mounting plate 222 and/or the front wall mounting plate 221;
the bottom end of the front wall mounting plate 221 is fixedly connected to the front end of the front suspension floor rail mounting plate 222.
Wherein, as shown in fig. 8, the first end of the turning arm 21 is sleeved with a rotating shaft 211, the rotating shaft 211 is horizontally and vertically arranged with the turning arm 21, two ends of the rotating shaft 211 extend out of two sides of the turning arm 21 respectively, two bolt holes are arranged on the side surface of the rotating shaft 211, one bolt hole is arranged on one side of the turning arm 21, the other bolt hole is arranged on the other side of the turning arm 21, the two bolt holes on the rotating shaft 211 are used for being matched with the two bolt holes on the rotating shaft connecting seat 224, the rotating shaft 211 is fixedly connected on the rotating shaft connecting seat 224 through bolts, and further the hinged connection between the front suspension upper bracket 22 and the turning arm 21 is realized.
As shown in fig. 6, 10 and 11, the front suspension bracket structure 2 further includes a front suspension lower bracket 25, the rear suspension bracket structure 1 further includes a rear suspension lower bracket 16, the front suspension lower bracket 25 is fixedly connected to the frame, and the second end of the turning arm 21 is hinged to the front suspension lower bracket 25;
the top end of the rear suspension lower bracket 16 is fixedly connected with the connecting bracket 13, and the rear suspension lower bracket 16 is fixedly connected with the frame.
Through the arrangement of the front suspension lower bracket 25 and the rear suspension lower bracket 16, the suspension assembly provided by the invention can adapt to various height differences between cabs and frames in various types of vehicles by adjusting the heights of the front suspension lower bracket 25, the shock absorber support 24 and the rear suspension lower bracket 16, or by arranging an adjusting structure (a plurality of adjusting mounting holes are formed in the front suspension lower bracket 25, the shock absorber support 24 and the rear suspension lower bracket 16 along the height direction), and adjusting the mounting positions of the front suspension lower bracket 25, the shock absorber support 24 and the rear suspension lower bracket 16 on the frames along the height direction, so that the suspension assembly provided by the invention can be matched with cabs with different mounting heights, and has better universality compared with the existing suspension assembly.
Wherein, as shown in fig. 5 and 6, the suspension assembly further comprises a pressure sensor 4 and an alarm 5; the pressure sensor is arranged on a nut of the compression bolt 6 at the hinge point of the second end part of the turning arm 21 and the front suspension lower bracket 25 and is positioned between the nut 6 and the front suspension lower bracket 25, the alarm 5 is electrically connected with the pressure sensor 4, and the pressure sensor 4 is used for sending compression force information representing the compression force value of the nut on the front suspension lower bracket 25 to the alarm 5.
Through setting up pressure sensor 4 and alarm 5 (wherein, alarm 5 sets up on the automobile body can, including but not limited to: alarm 5 sets up on the instrument desk of driver's cabin inside), detect in real time through pressure sensor 4 the nut is to the hold-down force value of front overhang lower carriage 25, when detecting that hold-down force value exceeds the hold-down force value range of predetermineeing (being greater than the maximum value of predetermineeing hold-down force value range, or be less than the minimum value of predetermineeing hold-down force value range), alarm 5 can send the warning instruction to the driver through measures such as sound or light efficiency, prompt the driver in time to maintain the tightening torque of hold-down bolt 6, avoid because of the abnormal sound problem emergence that the tightening torque decay inefficacy of hold-down bolt 6 caused after the pine takes off.
In embodiment 3, a through hole is formed in the side surface of the second end portion of the turning arm 21, a vibration-damping bush is sleeved in the through hole, the outer peripheral surface of the vibration-damping bush is in interference fit with the through hole, and both ends of the vibration-damping bush extend out of the through hole; the front suspension lower bracket 25 comprises two side plates which are arranged in parallel, wherein one side plate is used for being abutted against one end of the vibration reduction bushing, the other side plate is used for being abutted against the other end of the vibration reduction bushing, and the compression bolt 6 sequentially penetrates through the side plate, the inner hole of the vibration reduction bushing and the other side plate and then is in threaded fit with the nut so as to clamp the bushing between the two side plates;
the pressure sensor 4 is arranged on the side of the screw cap of the compression bolt 6 facing the side plate, the alarm 5 is electrically connected with the pressure sensor 4, and the pressure sensor 4 is used for sending pressure information representing the pressure value of the screw cap to the side plate to the alarm 5.
The invention provides a cab rear suspension pressure lock, a rear suspension bracket structure and a suspension assembly. Has at least the following technical effects or advantages:
1. through setting up limit structure 112, cooperate with the outer peripheral face of the upper cover 142 of first air bag shock absorber through limit structure 112 to restrict the rotation of the pin joint of the upper lug of first air bag shock absorber 14 around first air bag shock absorber 14, solved the jolt that the vehicle in-process produced and can make current back suspension pressure lock produce the rotary motion around the upper lug center of air bag shock absorber, make collision and friction between lock body guide way and the lockpin of back suspension upper bracket aggravate, produce abnormal sound, still can aggravate the technical problem of wearing and tearing between lock body guide way and the lockpin of back suspension upper bracket.
2. By arranging the bonding surface 111.1, residual impact force which is absorbed and weakened by the first air bag damper 14 and then transmitted to the hinge point of the upper lifting lug of the first air bag damper 14 and the rear suspension pressure lock along the axial direction of the first air bag damper 14 can be shared on the bonding surface 111.1 through the upper cover 142 of the first air bag damper, so that impact of the residual impact force to the hinge point of the upper lifting lug of the first air bag damper 14 and the rear suspension pressure lock is reduced, and abrasion of the hinge point of the upper lifting lug of the first air bag damper 14 and the rear suspension pressure lock is reduced.
3. Through setting up the rubber buffer layer, make among the above-mentioned surplus impact force share to the laminating face 111.1 the part can be absorbed by the rubber buffer layer and weaken, avoid producing damage or deformation because of striking between upper cover 142 and the laminating face 111.1 of first air bag shock absorber, also can reduce the striking abnormal sound between upper cover 142 and the laminating face 111.1 of first air bag shock absorber, further promote the NVH performance of vehicle.
4. Through the arrangement of the front suspension lower bracket 25 and the rear suspension lower bracket 16, the suspension assembly provided by the invention can adapt to various height differences between cabs and frames in various types of vehicles by adjusting the heights of the front suspension lower bracket 25, the shock absorber support 24 and the rear suspension lower bracket 16, or by arranging an adjusting structure (a plurality of adjusting mounting holes are formed in the front suspension lower bracket 25, the shock absorber support 24 and the rear suspension lower bracket 16 along the height direction), and adjusting the mounting positions of the front suspension lower bracket 25, the shock absorber support 24 and the rear suspension lower bracket 16 on the frames along the height direction, so that the suspension assembly provided by the invention can be matched with cabs with different mounting heights, and has better universality compared with the existing suspension assembly.
5. Through setting up pressure sensor 4 and alarm 5, detect in real time through pressure sensor 4 the nut is to the hold-down force value of front overhang lower carriage 25, when detecting that the hold-down force value exceeds the hold-down force value range of predetermineeing (being greater than the maximum value of predetermineeing the hold-down force value range, or be less than the minimum value of predetermineeing the hold-down force value range), alarm 5 accessible measure such as sound or light efficiency send the warning instruction to the driver, prompt the driver in time to maintain the tightening torque of hold-down bolt 6, avoid because of the tightening torque decay inefficacy of hold-down bolt 6 until the abnormal sound problem that causes after the pine takes place.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited at all, and the technical solution formed by adopting equivalent transformation or equivalent substitution falls within the protection scope of the present invention.
Claims (10)
1. A cab rear suspension pressure lock, characterized in that: the hydraulic lock comprises a shell, a limiting structure arranged at the bottom of the shell and a hydraulic lock arranged in the shell;
the shell is used for being hinged with one end of the transverse shock absorber, the hydraulic lock is used for connecting the rear suspension upper bracket to the top end of the shell, and the bottom of the shell is used for being hinged with an upper lifting lug of the first air bag shock absorber;
the limiting structure is used for being matched with the peripheral surface of the upper cover of the first air bag damper so as to limit the rotation of the first air bag damper around the hinge point of the upper lifting lug of the first air bag damper.
2. The cab rear suspension pressure lock according to claim 1, wherein: the limiting structure is encircling on the outer peripheral surface of the upper cover of the first air bag shock absorber; the limiting structure is used for encircling the side surface of the outer peripheral surface of the upper cover of the first air bag shock absorber to be the same as the shape of the outer peripheral surface of the upper cover of the first air bag shock absorber.
3. The cab rear suspension pressure lock according to claim 1, wherein: the bottom of shell is formed with be used for with the laminating of the top face of the upper cover of first air bag shock absorber, limit structure form in on the laminating, still be formed with the intercommunication on the laminating the inside installing port of shell, the installing port is used for the upper lug of first air bag shock absorber penetrates the inside of shell.
4. A cab rear suspension pressure lock according to claim 3, wherein: the shell comprises two side plates which are oppositely arranged and connected in a riveting way, and an accommodating space for accommodating the hydraulic lock, the upper lifting lug of the first air bag damper and one end of the transverse damper is formed between the two side plates;
the bottom of the side plate extends to a direction far away from the other side plate to form a flanging, and the two flanging form the joint surface.
5. A cab rear suspension pressure lock according to claim 3, wherein: the limiting structure comprises at least one protruding portion formed on the joint surface and arranged along the circumferential direction of the upper cover, and an arc-shaped surface used for being jointed with the outer circumferential surface of the upper cover is formed on the protruding portion.
6. A cab rear suspension pressure lock according to claim 3, wherein: the laminating face is provided with the rubber buffer layer, the rubber buffer layer be used for with the top face butt of upper cover.
7. A rear overhang support structure, characterized in that: comprising a rear suspension upper bracket fixedly connected with the bottom end and/or the rear end of the cab, a connecting bracket fixedly connected with the frame, a first air bag damper, a transverse damper and a cab rear suspension pressure lock according to any one of claims 1-6;
the rear suspension upper bracket is connected to the top of the shell through the hydraulic lock;
the upper lifting lug of the first air bag damper is hinged to the bottom of the shell, and the outer peripheral surface of the upper cover of the first air bag damper is matched with the limiting structure so as to limit the rotation of the first air bag damper around the upper lifting lug of the first air bag damper;
the lower lifting lug of the first air bag damper is hinged with the bottom end of the connecting support, the transverse damper is obliquely arranged, one end of the transverse damper is hinged on the shell, and the other end of the transverse damper is arranged at the top end of the connecting support.
8. A suspension assembly characterized by: comprising a front suspension bracket unit and two rear suspension bracket structures according to claim 7, wherein the two rear suspension bracket structures are symmetrically arranged on the left and right;
the front suspension bracket unit comprises a transverse stabilizer bar and two front suspension bracket structures which are symmetrically arranged left and right;
the front suspension support structure comprises a turning arm, a front suspension upper support, a second air bag damper and a damper support;
the upper lifting lug of the second air bag damper and the first end part of the turnover arm are both hinged to the bottom end of the front suspension upper bracket, and the front suspension upper bracket is used for being fixedly connected with the front end and/or the bottom end of the cab;
the second end part of the turning arm is used for being hinged with the frame; the transverse stabilizer bar is fixedly connected between the two overturning arms;
the shock absorber support is fixedly connected to the frame, and the lower lifting lug of the second air bag shock absorber is hinged to the shock absorber support.
9. The suspension assembly of claim 8 wherein: the front suspension support structure further comprises a front suspension lower support, the rear suspension support structure further comprises a rear suspension lower support, the front suspension lower support is fixedly connected to the frame, and the second end of the turning arm is hinged with the front suspension lower support;
the top end of the rear suspension lower bracket is fixedly connected with the connecting bracket, and the rear suspension lower bracket is fixedly connected with the frame.
10. The suspension assembly of claim 9 wherein: the system also comprises a pressure sensor and an alarm;
the pressure sensor is arranged on a nut of a compression bolt at a hinge point of the second end part of the turning arm and the front suspension lower bracket, and is positioned between the nut and the front suspension lower bracket, the alarm is electrically connected with the pressure sensor, and the pressure sensor is used for sending compression force information representing the compression force value of the nut on the front suspension lower bracket to the alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310469415.2A CN116278568A (en) | 2023-04-27 | 2023-04-27 | Cab rear suspension pressure lock, rear suspension support structure and suspension assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310469415.2A CN116278568A (en) | 2023-04-27 | 2023-04-27 | Cab rear suspension pressure lock, rear suspension support structure and suspension assembly |
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| Publication Number | Publication Date |
|---|---|
| CN116278568A true CN116278568A (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310469415.2A Pending CN116278568A (en) | 2023-04-27 | 2023-04-27 | Cab rear suspension pressure lock, rear suspension support structure and suspension assembly |
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| CN (1) | CN116278568A (en) |
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| CN205872217U (en) * | 2016-07-15 | 2017-01-11 | 武汉理工大学 | Driver's cabin four properties bag floats suspension device entirely |
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| CN113734301A (en) * | 2021-09-23 | 2021-12-03 | 东风商用车有限公司 | Novel cab rear suspension structure capable of saving space |
| CN114750559A (en) * | 2022-05-17 | 2022-07-15 | 东风汽车股份有限公司 | Front suspension structure of full-floating cab of commercial vehicle |
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- 2023-04-27 CN CN202310469415.2A patent/CN116278568A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120137129A (en) * | 2011-06-10 | 2012-12-20 | 현대자동차주식회사 | Cap suspension for truck |
| CN203032782U (en) * | 2013-01-06 | 2013-07-03 | 湖北航天技术研究院特种车辆技术中心 | Suspension and rear suspension system comprising same |
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