CN111845966B - Over-and-under type driver's cabin suspension mechanism - Google Patents
Over-and-under type driver's cabin suspension mechanism Download PDFInfo
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- CN111845966B CN111845966B CN202010576596.5A CN202010576596A CN111845966B CN 111845966 B CN111845966 B CN 111845966B CN 202010576596 A CN202010576596 A CN 202010576596A CN 111845966 B CN111845966 B CN 111845966B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/08—Superstructures for load-carrying vehicles comprising adjustable means
- B62D33/10—Superstructures for load-carrying vehicles comprising adjustable means comprising means for the suspension of the superstructure on the frame
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Abstract
The invention discloses a lifting cab suspension mechanism, which comprises at least two groups of suspension units sequentially arranged in the width direction of a cab, wherein each suspension unit comprises a first upper support, a first lower support and a rotating swing arm; the first upper support is fixedly connected to the cab, a first limiting surface is arranged on the first upper support, the lower end of the rotating swing arm is rotatably mounted on the first lower support, a second limiting surface matched with the first limiting surface is arranged at the upper end of the rotating swing arm, one end of the first limiting surface is hinged with one end of the second limiting surface, and the first limiting surface is attached to the second limiting surface when the cab is in a horizontal state; a damping element is arranged between the first lower support and the rotary swing arm. The invention can realize the lifting of the cab within a certain height range under the condition of ensuring that the cab is not disconnected with the chassis, thereby obtaining enough operation space at the bottom of the cab, and belongs to the technical field of lifting devices.
Description
Technical Field
The invention relates to the technical field of lifting devices, in particular to a lifting cab suspension mechanism.
Background
The existing cab suspension structure for the truck is divided into a fixed suspension, a semi-floating suspension and a full-floating suspension. At present, when the truck industry lifts a cab, three general modes are adopted for a suspension mechanism: 1. the rear suspension is separated, and the front suspension is connected with the chassis; 2. the front suspension is separated, and the rear suspension is connected with the chassis; 3. The cab is integrally separated from the chassis. When the mode is adopted for lifting, the cab is separated from the chassis by disconnecting the lock hook and the lock pin connecting structure or disassembling the bolt connecting structure. For latch hook type structures, the main problems are: the structure is complex, the number of matched parts is large, and the production cost is high; when the driver cab is lifted statically, the lock pin and the lock hook still move relatively, the lock pin has faults of abrasion, abnormal sound and the like after sale, and the problem that the lock pin cannot enter the lock hook groove and the like easily occurs when the driver cab falls down again after the driver cab is lifted statically. For the screw-on structure, there are main problems: the disassembly and assembly convenience is poor, and the disassembly and assembly convenience is specifically represented as follows: the hinged point of the upper support and the lower support is often shielded by an outside observation covering part of the driving cab, the dismounting space is small, and the operation is difficult; when the upper support and the lower support are disassembled, the cab is required to be supported upwards by auxiliary equipment such as a crane, a forklift, a jack and the like, so that the bolt shearing force in the vertical direction caused by the gravity of the cab, which is borne by the articulated bolt, is eliminated, and the cab is guaranteed not to be unstable or even fall after the bolt is disassembled. When the bolts are assembled, auxiliary equipment is still needed, so that the bolt mounting holes of the upper support and the lower support are centered.
In consideration of the maximum loading capacity and the minimum overall height of the truck, the engine is partially arranged below the cab, the front suspension of the long-head truck mostly adopts a threaded structure, and when the existing lifting device is used for maintaining the engine, the whole cab or the front suspension of the cab and the chassis need to be separated (before maintenance) and the upper and lower support bolt holes need to be centered (after maintenance), so that the maintenance convenience is poor, the efficiency is very low, and customers complain.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to: the invention provides a lifting type cab suspension mechanism which can realize that a cab can be lifted within a certain height range under the condition of ensuring that the cab is not disconnected with a chassis, thereby obtaining enough cab bottom operation space.
In order to achieve the purpose, the invention adopts the following technical scheme:
a lifting cab suspension mechanism comprises at least two groups of suspension units which are sequentially arranged along the width direction of a cab, wherein each suspension unit comprises a first upper support, a first lower support and a rotating swing arm;
the upper end of the first upper support is fixedly connected to one end of the cab, the lower end of the first upper support is provided with a first limiting surface, the lower end of the rotating swing arm is rotatably mounted on the first lower support, a damping element is arranged between the first lower support and the rotating swing arm, the upper end of the rotating swing arm is provided with a second limiting surface matched with the first limiting surface, one end of the first limiting surface is hinged with one end of the second limiting surface, and the first limiting surface is attached to the second limiting surface when the cab is in a horizontal state; the other end of the cab is mounted on the chassis of the vehicle.
Preferably, the first upper support is provided with a first support vertex, a second support vertex and a third support vertex; the rotating swing arm is provided with a first swing arm vertex, a second swing arm vertex and a third swing arm vertex;
a first plane is formed between the top point of the first support and the top point of the second support, a second plane is formed between the top point of the first support and the top point of the third support, a first limiting surface is formed between the top point of the second support and the top point of the third support, and the second plane is fixed at the bottom of the cab;
the first swing arm vertex is hinged with the first lower support, the second swing arm vertex is hinged with the second support vertex, and a second limiting surface is formed between the second swing arm vertex and the third swing arm vertex.
As a preferred scheme, a second lower support is arranged on the automobile chassis, a shock absorber is arranged on the second lower support, and the cab is installed on the shock absorber.
As the preferred scheme, the second lower support and the shock absorber are located at the rear end of the bottom of the cab, the first lower support, the rotating swing arm and the first upper support are located at the front end of the bottom of the cab, the top point of the first support is located at the bottom of the cab, the top point of the second support is located below the top point of the first support, and the top point of the third support is located in front of the cab and is arranged in a suspended mode.
As a preferred scheme, when the cab is in a horizontal state, the hinged position of the top point of the first swing arm and the first lower support is not lower than the hinged position of the top point of the second swing arm and the top point of the second support.
As a preferred scheme, mounting holes are formed in the top point of the third swing arm and the top point of the third support, and the top point of the third swing arm is detachably connected with the top point of the third support through bolts.
Preferably, the lifting cab suspension mechanism further comprises a lifter for driving the rotary swing arm to rotate.
Preferably, a damping element is installed at the vertex of the first swing arm, and the damping element is a rubber ring or a shock absorber.
Preferably, the first upper support is fixed to the bottom of the cab by bolts or rivets or welding.
Preferably, the first upper support, the first lower support, the second lower support and the rotating swing arm are all made of rigid materials.
Compared with the prior art, the invention has the following beneficial effects: the lifting cab suspension mechanism can realize the change of the cab within a certain height range under the condition of ensuring that the cab is not disconnected with the chassis, thereby obtaining enough bottom operation space of the cab; during driving, the top point of the third swing arm and the top point of the third support are fixedly connected through bolts, and the cab can be relatively fixed with the chassis. When the driver's cab is parked and lifted, the first upper support and the rotary swing arm can rotate relatively by disassembling the bolt. The hinged position of the top point of the first swing arm and the first lower support is not lower than the hinged position of the top point of the second swing arm and the top point of the second support, so that the front and back offset of the shock absorber can be minimized in the lifting process of the cab. The cab disclosed by the invention has the advantages of compact structure, convenience in maintenance and high safety, and the cab cannot deviate and shake in the ascending and descending processes through the hinged connection of the first upper support and the rotating swing arm. When the driver's cabin descends or the unstability tenesmus, it is spacing through the automatic laminating of the spacing face of first spacing face and second, make maintenance back driver's cabin and chassis can the self return centering, need not the bolted connection of the mounting hole on the spacing face of auxiliary assembly can be accomplished first spacing face and second fast, can promote the maintenance convenience by a wide margin, and simultaneously, through the contact of the spacing face of first spacing face and second, can make the driver's cabin locking at certain height, the personnel's of operation below the driver's cabin safety has been ensured.
Drawings
Fig. 1 is a schematic structural view of a lifting cab suspension mechanism in a driving state.
Fig. 2 is a schematic view of the structure of the suspension mechanism of the lift cab in a lifting operation state.
Detailed Description
In the figure, 1 is a first lower support, 2 is a rotary swing arm, 3 is a second lower support, 4 is a shock absorber, 5 is a first upper support, 6 is a cab, 21 is a first swing arm vertex, 22 is a second swing arm vertex, 23 is a third swing arm vertex, 24 is a second limit surface, 51 is a first support vertex, 52 is a second support vertex, 53 is a third support vertex, 54 is a first limit surface, 55 is a first plane, and 56 is a second plane.
As shown in fig. 1 to 2, the present embodiment provides a suspension mechanism for a lift cab, which includes at least two sets of suspension units sequentially arranged along a width direction of the cab, where the suspension units include a first upper support 5, a first lower support 1, and a rotating swing arm 2.
The upper end fixed connection of first upper bracket 5 is in the one end of driver's cabin, the lower extreme of first upper bracket 5 is equipped with first spacing face 54, the lower extreme rotary type installation (articulated) of rotating swing arm 2 is on first lower support 1, be equipped with shock-absorbing element (not drawn in the figure) between first lower support 5 and the rotating swing arm 2, shock-absorbing element can be elements such as rubber ring or bumper shock absorber, preferably, shock-absorbing element installs in first lower support 5 and the pin joint (first swing arm summit 21) department of rotating swing arm 2, reach absorbing purpose. The upper end of the rotary swing arm 2 is provided with a second limiting surface 24 matched with the first limiting surface 54, one end of the first limiting surface 54 is hinged with one end of the second limiting surface 24, and the first limiting surface 54 is attached to the second limiting surface 24 when the cab is in a horizontal state.
The other end of driver's cabin is installed on vehicle chassis, and the other end of driver's cabin can be installed on vehicle chassis through rubber pad or bumper shock absorber etc. and these mounting means all belong to prior art, and the no longer repeated description herein. Preferably, in this embodiment, the cab is connected to the chassis of the vehicle by using the shock absorber 4, the chassis of the vehicle is provided with the second lower support 3, the second lower support is provided with the shock absorber 4, and the cab is mounted on the shock absorber 4. The lower end of the shock absorber 4 is rotatably mounted (hinged) on the second lower support 3, and the upper end of the shock absorber 4 is rotatably mounted (hinged) on the other end of the cab.
The upper end of the first upper support is fixedly connected to one end of the cab, the lower end of the first upper support is provided with a first limiting surface, the lower end of the rotating swing arm is rotatably mounted (hinged) on the first lower support, the upper end of the rotating swing arm is provided with a second limiting surface matched with the first limiting surface, one end of the first limiting surface is hinged with one end of the second limiting surface, and the first limiting surface is attached to the second limiting surface when the cab is in a horizontal state;
the lower end of the shock absorber 4 is rotatably mounted (hinged) on the second lower support, and the upper end of the shock absorber 4 is rotatably mounted (hinged) at the other end of the cab; the first lower support 1 and the second lower support 3 are both fixed on the underframe of the automobile. The swing arm 2 can only rotate around the first lower support 1, one end (rear end) of the cab 6 is rotatably connected (hinged) with the shock absorber 4, and the cab 6 rotates around a hinge point of the shock absorber 4 and the cab 6 when being lifted. The other end (the front end) of driver's cabin 6 is equipped with first upper bracket 5, and first upper bracket 5 is located the bottom of driver's cabin 6, and the rear end of first upper bracket 5 (is articulated with rotation swing arm 2), and rotation swing arm 2 drives first upper bracket 5 when rotating and rotates to drive driver's cabin 6 and go up and down. The first upper support 5 is provided with a first limiting surface 54, the first limiting surface 54 is positioned at the lower end of the first upper support 5, the rotating swing arm 2 is provided with a second limiting surface 24, and the rotating swing arm 2 is positioned at the upper end of the rotating swing arm 2.
When the cab 6 is in a balanced state (horizontal state), the rotating direction of the rotating swing arm 2 is opposite to the rotating direction of the first upper support 5, when the rotating swing arm 2 rotates clockwise, both the first upper support 5 and the cab 6 rotate counterclockwise, when the rotating swing arm 2 rotates counterclockwise, a hinge point between the rotating swing arm 2 and the first upper support 5 slowly rises, so that the first upper support 5 is lifted, and when the cab is lifted to a proper height or lifted to a highest point, the rotating swing arm 2 stops rotating. When the driver's cabin 6 height that needs descend or cause driver's cabin 6 tenesmus because the unstability, rotate swing arm 2 anticlockwise rotation, first upper bracket 5 clockwise rotates, first spacing face 54 rotates downwards, spacing face 24 of second upwards rotates, first spacing face 54 is close to the laminating back with spacing face 24 of second each other, first spacing face 54 wants spacing mutually with spacing face 24 of second, prevent to rotate swing arm 2 and first upper bracket 5 and continue to rotate, thereby prevent that driver's cabin 6 from continuing to descend or the tenesmus, the security has been improved. When the cab 6 is in a balanced state, the first limiting surface 54 is attached to the second limiting surface 24, the first limiting surface 54 and the second limiting surface 24 are both inclined downwards from front to back, the lower part of the first limiting surface 54 is hinged with the lower part of the second limiting surface 24, and the upper part of the first limiting surface 54 is detachably connected with the upper part of the second limiting surface 24 through bolts and the like.
When viewed from the side surface of the cab 6 (in the projection direction in the figure), the cross section of the first upper support 5 is in the shape of a right triangle, one right-angled surface of the right triangle is fixed at the bottom of the cab 6, the other right-angled surface of the right triangle is perpendicular to the bottom of the cab 6, and the inclined surface is equivalent to the first limiting surface 54; the first upper support 5 is provided with a first support vertex 51, a second support vertex 52 and a third support vertex 53, and the first support vertex 51, the second support vertex 52 and the third support vertex 53 respectively correspond to three vertexes of a right triangle; the cross-section of rotating swing arm 2 is the triangle-shaped form, rotates swing arm 2 and is equipped with first swing arm summit 21 and second swing arm summit 22 and third swing arm summit 23, and first swing arm summit 21 and second swing arm summit 22 and third swing arm summit 23 correspond triangular three summit respectively. A first plane 55 (a right-angle surface perpendicular to the bottom of the cab 6) is formed between the first support vertex 51 and the second support vertex 52, a second plane 56 (a right-angle surface fixed at the bottom of the cab 6) is formed between the first support vertex 51 and the third support vertex 53, a first limit surface 54 (an inclined surface) is formed between the second support vertex 52 and the third support vertex 53, the first plane 55 and the second plane 56 are perpendicular to each other, the second plane 56 is fixed at the bottom of the cab 6, the first swing arm vertex 21 is hinged with the first lower support 1, the second swing arm vertex 22 (close to the rear end of the cab 6) is hinged with the second support vertex 52, and the second limit surface 24 is formed between the second swing arm vertex 22 and the third swing arm vertex 23 (located at the front end of the cab 6).
Second undersetting 3, bumper shock absorber 4 all are located the rear end of 6 bottoms on the driver's cabin, and first undersetting 1 all is located the front end of 6 bottoms on the driver's cabin with rotation swing arm 2 and first upper bracket 5, and first support summit 51 is located the bottom of driver's cabin 6, and second support summit 52 is located the below on first support summit 51, and third support summit 53 is located the place ahead of driver's cabin 6 and unsettled setting. Cab 6 is the front suspension structure, and cab 6's rear end passes through bumper shock absorber 4 with the vehicle bottom frame to be connected, and cab 6's front end suspension, cab 6's front end rotate around the rear end and realize going up and down, and front suspension's cab 6 is more nimble convenient in the lifting, is convenient for to the maintenance of vehicle, and corresponding this application also can set the rear suspension structure into.
When the cab 6 is in a balanced state (horizontal state), the hinged position of the first swing arm vertex 21 and the first lower support 1 is not lower than the hinged position of the second swing arm vertex 22 and the second support vertex 52. The pin joint that rotates swing arm 2 and first upper bracket 5 is located the rear of the pin joint that rotates swing arm 2 and first lower bracket 1, and the height of the pin joint that rotates swing arm 2 and first upper bracket 5 can be higher than, equal to or be less than the pin joint that rotates swing arm 2 and first lower bracket 1. Preferably, the height of the hinge point of the swing arm 2 to the first upper mount 5 is equal to or lower than the hinge point of the swing arm 2 to the first lower mount 1, so that the amount of the rear end of the cab 6 offset in the front-rear direction can be minimized during the lifting and lowering of the cab 6.
Third swing arm summit 23 department all is equipped with the mounting hole with third support summit 53 department, third swing arm summit 23 passes through bolted detachable connection with third support summit 53, when first spacing face 54 and the laminating of second spacing face 24, the mounting hole of third swing arm summit 23 department and the mounting hole of third support summit 53 department are automatic to aim at, can will rotate swing arm 2 and first upper bracket 5 fixed connection after inserting the bolt, thereby lock driver's cabin 6, prevent that the vehicle from taking place to remove in driver's cabin 6 of driving process. When parking is carried out lifting operation on the cab 6, the bolt is detached, the rotating swing arm is driven to rotate (rotate clockwise), and the cab 6 is lifted. The bolt is located the front end of driver's cabin 6, and 6 rotation angle of driver's cabin need not to be considered in the direction of installation of bolt, also need not to consider the factor in the aspect of performance such as the 6 ride comfort of driver's cabin, can realize the biggest space convenience of bolt dismouting, be sheltered from the interference by parts such as 6 covering of driver's cabin when avoiding maintenance operation, simultaneously, no matter how to rotate swing arm 2 and the bolt installation direction of first upper bracket 5, under horizontal parking state, the effect of the separation power is not had to the bolt axial, and the bolt normal direction also does not receive the shearing force.
The suspension mechanism of the lift type cab 6 further comprises a lifter (not shown in the figure) for driving the rotary swing arm to rotate. The lifting device can be a hydraulic cylinder, an air cylinder and the like, preferably, the hydraulic cylinder is adopted in the embodiment, the hydraulic cylinder drives the rotating swing arm 2 to rotate around the first lower support 1, and the hydraulic cylinder can bear large load, so that the cab 6 is lifted more stably.
The first lower support 1 and the second lower support 3 are both fixedly arranged on an automobile chassis.
The first upper support 5 is fixed on the bottom of the cab 6 by bolts or rivets or welding, the first upper support 5 is rigidly connected with the cab 6, and the second plane 56 of the first upper support 5 is fixed on the bottom of the cab 6.
The materials of the first upper support 5, the first lower support 1 and the second lower support 3 are rigid materials. The material of the rotating swing arm 2 is rigid material, such as metal, composite material and the like. The rigid material is better able to withstand the load of the cab 6 and has good resistance to deformation. In the driving state, first upper bracket 5 does not have relative motion with rotation swing arm 2, can regard as a rigidity whole, relative and prior art in adopt the locking mode of latch hook formula structure, the spacing and locking mode of this application have avoided wearing and tearing, abnormal sound scheduling problem. The first upper support 5, the first lower support 1 and the second lower support 3 can be manufactured in the form of casting, forging, stamping and tailor welding.
The working process of the invention is as follows: during driving, the first limiting face of the first upper support is attached to the second limiting face of the rotating swing arm to achieve positioning, the mounting hole of the first upper support is exactly aligned with the mounting hole in the rotating swing arm, and the first upper support is fixedly connected with the rotating swing arm through the mounting hole of the first upper support and the mounting hole in the rotating swing arm by bolts. When the cab is lifted, the bolts are firstly detached, clockwise torque is applied to the rotary swing arm (through lifters such as air cylinders), after the lifters overcome the gravity torque of the cab, the height of the cab is increased, the front end of the cab rotates around a shock absorber at the rear end to achieve lifting (anticlockwise rotation), and the maintenance operation space at the bottom of the cab is increased. After the maintenance is finished, the lifter is removed, the mounting hole of the first upper support is automatically centered with the mounting hole in the rotating swing arm, the first limiting surface of the first upper support and the second limiting surface of the rotating swing arm are slowly attached to the rear side and are limited, and finally the bolt is tightened to restore the driving state. The first spacing face of the first upper support is slowly separated from the second spacing face of the rotating swing arm in the lifting process, the first spacing face of the first upper support is opposite to the rotating direction of the second spacing face of the rotating swing arm and slowly approaches to the first spacing face in the descending process of the cab, the first spacing face of the first upper support is automatically limited when being attached to the second spacing face of the rotating swing arm, the first spacing face cannot continue to rotate anticlockwise, the first spacing face cannot continue to rotate clockwise, the cab is fixed in a horizontal state, and damage to operators caused by instability and dropping of the cab is avoided.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a over-and-under type driver's cabin suspension mechanism which characterized in that: the suspension unit comprises a first upper support, a first lower support and a rotary swing arm;
the upper end of the first upper support is fixedly connected to one end of a cab, the lower end of the first upper support is provided with a first limiting surface, the lower end of the rotating swing arm is rotatably mounted on the first lower support, a damping element is arranged between the first lower support and the rotating swing arm, the upper end of the rotating swing arm is provided with a second limiting surface matched with the first limiting surface, one end of the first limiting surface is hinged with one end of the second limiting surface, and the first limiting surface is attached to the second limiting surface when the cab is in a horizontal state; the other end of the cab is arranged on the automobile chassis;
the first upper support is provided with a first support peak, a second support peak and a third support peak; a first swing arm vertex, a second swing arm vertex and a third swing arm vertex are arranged on the rotating swing arm;
A first plane is formed between the top point of the first support and the top point of the second support, a second plane is formed between the top point of the first support and the top point of the third support, the first limiting surface is formed between the top point of the second support and the top point of the third support, and the second plane is fixed at the bottom of a cab;
the first swing arm vertex is hinged with the first lower support, the second swing arm vertex is hinged with the second support vertex, and the second limiting surface is formed between the second swing arm vertex and the third swing arm vertex.
2. The elevating cab suspension of claim 1, wherein: a second lower support is arranged on the automobile chassis, a shock absorber is arranged on the second lower support, and the cab is installed on the shock absorber.
3. The elevating cab suspension of claim 2, wherein: the second undersetting with the bumper shock absorber all is located the rear end of driver's cabin bottom, first undersetting with rotate the swing arm and first upper bracket all is located the front end of driver's cabin bottom, first support summit is located the bottom of driver's cabin, second support summit is located the below on first support summit, third support summit is located the place ahead of driver's cabin and unsettled setting.
4. The elevating cab suspension of claim 3, wherein: when the cab is in a horizontal state, the hinged position of the vertex of the first swing arm and the first lower support is not lower than the hinged position of the vertex of the second swing arm and the vertex of the second support.
5. The elevating cab suspension of claim 1, wherein: and mounting holes are formed in the vertex of the third swing arm and the vertex of the third support, and the vertex of the third swing arm and the vertex of the third support are detachably connected through bolts.
6. The elevating cab suspension mechanism of claim 1, wherein: the lifting cab suspension mechanism further comprises a lifter for driving the rotary swing arm to rotate.
7. The elevating cab suspension of claim 1, wherein: the shock-absorbing element is installed at the vertex of the first swing arm, and the shock-absorbing element is a rubber ring or a shock absorber.
8. The elevating cab suspension of claim 1, wherein: the first upper support is fixed at the bottom of the cab through bolts or rivets or welding.
9. The elevating cab suspension of claim 2, wherein: the first upper support, the first lower support, the second lower support and the rotating swing arm are all made of rigid materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010576596.5A CN111845966B (en) | 2020-06-22 | 2020-06-22 | Over-and-under type driver's cabin suspension mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010576596.5A CN111845966B (en) | 2020-06-22 | 2020-06-22 | Over-and-under type driver's cabin suspension mechanism |
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| Publication Number | Publication Date |
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| CN111845966A CN111845966A (en) | 2020-10-30 |
| CN111845966B true CN111845966B (en) | 2022-06-28 |
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| CN202010576596.5A Active CN111845966B (en) | 2020-06-22 | 2020-06-22 | Over-and-under type driver's cabin suspension mechanism |
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| CN119749715B (en) * | 2025-01-07 | 2025-12-12 | 中国重汽集团济南动力有限公司 | Cab overturning limiting assembly and vehicle |
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