CN120607212A - Industrial vehicle shock absorption structure - Google Patents
Industrial vehicle shock absorption structureInfo
- Publication number
- CN120607212A CN120607212A CN202511072036.5A CN202511072036A CN120607212A CN 120607212 A CN120607212 A CN 120607212A CN 202511072036 A CN202511072036 A CN 202511072036A CN 120607212 A CN120607212 A CN 120607212A
- Authority
- CN
- China
- Prior art keywords
- plate
- seat
- hinged
- connecting plate
- industrial vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/003—Safety devices, e.g. for limiting or indicating lifting force for fork-lift trucks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07513—Details concerning the chassis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
本发明公开一种工业车辆减震结构，包括车架、安装于车架上方的立板、驱动座和后弹性减震件，驱动座铰接在立板后侧面，驱动轮安装于驱动座下方，后弹性减震件的两端分别连接驱动座和立板，在车架与驱动座上还安装有锁止油缸。在车辆作业时，锁止油缸锁定，驱动轮与车架实现刚性连接，从而确保车辆作业时的稳定性并提升安全性；而当车辆行驶时，锁止油缸放开，通过驱动座和后弹性减震件，使驱动轮与车架后端实现浮动连接，后弹性减震件提供减振效果，有效降低叉车通过不平整路面上的震感和噪音，提高整车的驾驶舒适性和NVH性能。通过在不同工况下进行悬挂轮系与车架连接的刚柔切换，保证了驾驶的舒适性和作业的安全性。
The present invention discloses a shock-absorbing structure for an industrial vehicle, comprising a frame, a vertical plate installed above the frame, a drive seat, and a rear elastic shock-absorbing member. The drive seat is hinged to the rear side of the vertical plate, the drive wheel is installed below the drive seat, and the two ends of the rear elastic shock-absorbing member are respectively connected to the drive seat and the vertical plate. A locking cylinder is also installed on the frame and the drive seat. When the vehicle is in operation, the locking cylinder is locked, and the drive wheel is rigidly connected to the frame, thereby ensuring the stability of the vehicle during operation and improving safety. When the vehicle is driving, the locking cylinder is released, and the drive wheel is floatingly connected to the rear end of the frame through the drive seat and the rear elastic shock-absorbing member. The rear elastic shock-absorbing member provides a vibration-absorbing effect, effectively reducing the vibration and noise of the forklift when passing through uneven roads, thereby improving the driving comfort and NVH performance of the entire vehicle. By switching the rigidity and flexibility of the connection between the suspension wheel system and the frame under different working conditions, driving comfort and operating safety are guaranteed.
Description
Technical Field
The invention relates to the field of forklift trucks, in particular to an industrial vehicle damping structure.
Background
The damping structure of the industrial vehicle is widely applied to the fields of logistics transportation and the like, and generally comprises a frame and a suspension wheel train part matched with the frame.
The conventional industrial vehicle damping structure cannot realize rigid-flexible switching of suspension, and the industrial vehicle damping structure comprises a suspension locking mechanism, namely, a locking oil cylinder is arranged between a frame and the suspension, so that rigid connection or flexible connection of the suspension and the frame is realized, for example, when a forklift lifts a door frame to a high position for stacking, a suspension wheel train and the frame are locked into a rigid state through locking of the locking oil cylinder, and shaking of the forklift due to floating of suspension in the process of stacking goods is prevented, so that the operation stability is improved. When the vehicle enters a running state after the operation is finished, the locking oil cylinder is released, so that the suspension wheel train and the frame are connected into a floating state, the vibration of the road surface is effectively filtered, and the driving comfort is improved.
Therefore, how to provide an industrial vehicle shock absorbing structure having shock absorbing comfort during traveling and high stability during operation is a technical problem that a person skilled in the art needs to solve at present.
Disclosure of Invention
The invention aims to provide an industrial vehicle damping structure capable of rigidly and flexibly switching a suspension gear train, which comprises a frame, a vertical plate, a driving seat, a rear elastic damping piece and a locking oil cylinder, wherein the vertical plate is arranged above the frame, and the locking oil cylinder is arranged between the frame and the driving seat. The driving seat is connected with the vehicle through hinging and is matched with the elastic damping piece, so that the suspension wheel train of the vehicle is in floating connection with the frame, and the purposes of reducing shock feeling and noise and improving the driving comfort of the whole vehicle are achieved when the vehicle is required. Meanwhile, the gear train suspension and the frame can be subjected to rigid-flexible switching through the locking oil cylinder, wherein the locking oil cylinder is locked during operation, so that rigid coupling of the suspension gear train and the frame is realized, and the safety during operation of the vehicle is improved.
In order to solve the technical problems, the invention provides an industrial vehicle damping structure capable of switching a suspension gear train rigidly and flexibly, which comprises a frame, a vertical plate, a driving seat, a rear elastic damping piece and a rear locking oil cylinder, wherein the vertical plate is arranged above the frame, the driving seat is hinged with the rear side surface of the vertical plate, a driving wheel is arranged below the driving seat, two ends of the rear elastic damping piece are respectively connected with the driving seat and the vertical plate, and the rear locking oil cylinder is arranged between the vertical plate and the driving seat.
Preferably, the rear side of the vertical plate is symmetrically provided with two hinge plates, the driving seat is located between the two hinge plates, the front end of the hinge plate is fixedly connected with the lower part of the rear side of the vertical plate, the rear end of the hinge plate is fixedly connected to the frame back bending plate, and the driving seat is hinged into a hinge hole at the rear end of the hinge plate through a hinge shaft.
Preferably, the device further comprises an anti-separation upper connecting plate and an anti-separation lower connecting plate, wherein the upper end of the anti-separation upper connecting plate is hinged to the rear side surface of the vertical plate, the lower end of the anti-separation upper connecting plate is hinged to the upper end of the anti-separation lower connecting plate, the lower end of the anti-separation lower connecting plate is hinged to the front end of the driving seat, and a limiting pin for limiting the rotation angle of the anti-separation upper connecting plate is arranged on the anti-separation lower connecting plate.
Preferably, the mechanism comprises two groups of connecting rod mechanisms which are symmetrically arranged, each connecting rod mechanism comprises a vertical rod and two cross rods, the lower ends of the vertical rods are fixedly connected with the middle parts of the edges of the two sides above the driving seat, the two cross rods are arranged in an up-down opposite mode, transverse plates which are fixedly connected with the two cross rods are arranged between the opposite cross rods on the left side and the right side, the front ends of the cross rods are hinged to the rear sides of the vertical plates, and the rear ends of the cross rods are hinged to the vertical rods.
Preferably, the back elastic damping piece comprises a back spring, a back pressing seat, a back screw rod, a back adjusting nut and a locating plate, wherein the front end of the locating plate is connected with the back side surface of the vertical plate, the upper end of the back screw rod is connected with the locating plate, the back pressing seat is movably mounted at the lower end of the back screw rod and is pressed down by the back adjusting nut, the back pressing seat is pressed down on the upper end of the back spring, and the lower end of the back spring is mounted at the front end above the driving seat.
Preferably, the upper end of the rear locking oil cylinder is hinged to the rear side surface of the vertical plate, the lower end of the rear locking oil cylinder is hinged to the front end above the driving seat, a locking control valve is arranged on the outer side of a cylinder barrel of the rear locking oil cylinder, and locking and unlocking of the rear locking oil cylinder are achieved through control of on-off of an oil duct.
Preferably, the landing leg is installed to the frame front end, the load-bearing wheel is installed to the landing leg front end, the drive wheel is installed to the frame rear end, including floating connecting plate and preceding elastic shock absorber, the rear end of floating connecting plate articulates the landing leg, floating connecting plate's front end protrusion in the landing leg front end and connect the load-bearing wheel, preceding elastic shock absorber's both ends are connected respectively floating connecting plate with the landing leg.
Preferably, the floating connection plate comprises a side plate and a bottom plate, the inner side surface of the rear end of the side plate is attached to the outer side surface of the vertical main plate of the supporting leg, the bottom plate is arranged opposite to the upper wing plate of the supporting leg, the front end of the side plate is provided with a wheel axle mounting hole, the rear end of the side plate is provided with a front hinge hole, the bottom plate is arranged on the outer side of the lower edge of the side plate, the lower end of the front elastic shock absorbing piece is connected with the upper surface of the bottom plate, and the upper end of the front elastic shock absorbing piece is connected with the upper wing plate of the supporting leg.
Preferably, the front elastic damping member comprises a front spring, a front pressing seat, a front screw rod and a front adjusting nut, wherein the upper end of the front screw rod is connected with an upper wing plate of the supporting leg, the front pressing seat is movably arranged at the lower end of the front screw rod and is pressed down by the front adjusting nut, the front pressing seat is pressed down on the upper end of the front spring, and the lower end of the front spring is arranged on the bottom plate;
The bottom plate is provided with a vertical limiting seat, the limiting seat is positioned in the middle of the floating connecting plate and in front of the front elastic shock absorbing piece, the upper end and the lower end of the limiting seat are provided with limiting blocks, and the two limiting blocks are respectively close to the lower surface of the upper wing plate and the upper surface of the lower wing plate of the supporting leg.
Preferably, the front locking mechanism comprises a front locking oil cylinder, wherein the rear end of the front locking oil cylinder is hinged with the supporting leg, and the front end of the front locking oil cylinder is hinged with the lower corner of the rear end of the side plate.
The invention provides an industrial vehicle damping structure capable of switching a suspension gear train rigidly and flexibly, which comprises a frame, a vertical plate, a driving seat, a rear elastic damping piece and a locking oil cylinder, wherein the vertical plate is arranged above the frame, the locking oil cylinder is arranged between the driving seat and the vertical plate, the driving seat is hinged to the rear side surface of the vertical plate, a driving wheel is arranged below the driving seat, and two ends of the rear elastic damping piece are respectively connected with the driving seat and the vertical plate. When the vehicle runs, the locking oil cylinder is released, the floating connection of the driving wheel and the frame is realized through the driving seat and the rear elastic damping piece, the rear elastic damping piece provides damping, the vibration feeling of a forklift on an uneven road surface is effectively reduced, the vibration noise is reduced, and the driving comfort and the NVH performance of the whole vehicle are improved.
Drawings
FIG. 1 is a schematic view of a rear shock absorbing structure of a first embodiment of an industrial vehicle shock absorbing structure provided by the present invention;
FIG. 2 is a schematic view of an anti-separation structure of a first embodiment of a shock absorbing structure for an industrial vehicle according to the present invention;
FIG. 3 is a schematic view of a driving seat in a first embodiment of a shock absorbing structure for an industrial vehicle according to the present invention;
FIG. 4 is a schematic view of a rear shock absorbing structure of a second embodiment of an industrial vehicle shock absorbing structure provided by the present invention;
FIG. 5 is a schematic diagram of a driving seat in a second embodiment of a shock absorbing structure for an industrial vehicle according to the present invention;
FIG. 6 is a schematic view of a front vibration damping structure of one embodiment of an industrial vehicle vibration damping structure provided by the present invention;
fig. 7 is a schematic structural view of a floating connection plate in an embodiment of the industrial vehicle shock absorbing structure provided by the present invention.
The bicycle frame comprises a bicycle frame 1, a bicycle frame back bending plate 1-1, supporting legs 2, a carrying wheel 3, a driving wheel 4, a floating connecting plate 5, side plates 5-1, a bottom plate 5-2, a wheel shaft mounting hole 5-3, a front hinge hole 5-4, a front spring seat 5-5, an oil cylinder hinge shaft 5-6, a front spring 6, a front pressing seat 7, a front screw rod 8, a front adjusting nut 9, a limiting seat 10, a limiting block 11, a front locking oil cylinder 12, a vertical plate 13, a driving seat 14, a mounting hole 14-1, a rear spring seat 14-2, an oil cylinder hinge seat 14-3, a hinge shaft mounting seat 14-4, a hinge shaft 14-5, an anti-separation pin 14-6, a vertical rod 15, a cross rod 16, a rear spring 17, a rear pressing seat 18, a rear screw rod 19, a rear adjusting nut 20, a positioning plate 21, rear locking oil cylinders 22, 23, an anti-separation upper connecting plate 24, an anti-separation lower connecting plate 25, a limiting pin 26, a transverse plate 27 and a locking control valve 28.
Detailed Description
The invention provides an industrial vehicle damping structure capable of rigidly and flexibly switching a suspension gear train, which enables a bearing wheel to be in floating connection with a supporting leg at the front end of a frame through a floating connecting plate and a front elastic damping piece, effectively reduces vibration feeling of a forklift on an uneven road surface, reduces vibration noise and improves driving comfort of the whole vehicle, and simultaneously combines the function of a locking oil cylinder to realize rigid connection or complete floating connection of a driving wheel and the frame, thereby providing different damping effects under different working conditions and taking stability and comfort of the vehicle into consideration.
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 3, fig. 1 is a schematic view of a rear shock absorbing structure of an embodiment of an industrial vehicle shock absorbing structure according to the present invention, fig. 2 is a schematic view of an anti-separation structure of an embodiment of an industrial vehicle shock absorbing structure according to the present invention, and fig. 3 is a schematic view of a driving seat of an embodiment of an industrial vehicle shock absorbing structure according to the present invention.
The invention provides a forward-drive forklift, which comprises a frame 1, two supporting legs 2, two bearing wheels 3 and a driving wheel 4, wherein the two supporting legs 2 are arranged at the front end of the frame 1 in parallel, the two bearing wheels 3 are respectively arranged at the front ends of the two supporting legs 2, and the driving wheel 4 is arranged at the rear end of the frame 1. The bicycle frame further comprises a vertical plate 13, a driving seat 14, a rear elastic shock absorbing member and a rear locking oil cylinder 22, wherein the vertical plate 13 is arranged above the bicycle frame 1, the front end of the driving seat 14 is hinged with the rear side surface of the vertical plate 13 or the rear end of the driving seat 14 is hinged with the rear side of a hinged plate 23, the driving wheel 4 is arranged below the driving seat 14, and two ends of the rear elastic shock absorbing member are respectively connected with the driving seat 14 and the vertical plate 13. The driving seat 14 forms a swing arm structure capable of swinging up and down, the front end of the swing arm structure is hinged with the vertical plate 13 or the rear end of the swing arm structure is hinged with the rear side of the hinged plate 23, the driving wheel 4 is installed in the middle of the lower surface of the driving seat 14 through the installation hole 14-1, the rear locking oil cylinder 22 is installed between the vertical plate 13 and the driving seat 14, the outer side of a cylinder barrel of the rear locking oil cylinder 22 is provided with a locking control valve 28, the locking and the loosening of the rear locking oil cylinder 22 are realized by controlling the on-off of an oil duct, when a forklift runs, the rear locking oil cylinder 22 is released, the driving wheel 4 can move up and down relative to the vertical plate 13, and meanwhile, the up-and-down movement buffering is realized through a rear elastic shock absorber, so that the shock absorption effect is realized. When the forklift works to stack cargoes, the rear locking oil cylinder 22 is locked, the driving seat 4 and the vertical plate 13 are rigidly connected (namely, the driving wheel 4 and the frame 1 are rigidly connected together), the stability of the vehicle during operation is ensured, the vehicle is prevented from shaking and overturning, and the safety is improved.
Preferably, in order to realize the vibration reduction state switching, a rear locking cylinder 22 may be provided, an upper end of the rear locking cylinder 22 being hinged to a rear side of the vertical plate 13, a lower end of the rear locking cylinder 22 being hinged to a front-end cylinder hinge seat 14-3 above the driving seat 14. The rear locking cylinder 22 is located between the two rear springs 17, so that a better locking effect can be achieved, and compared with a structure in which the locking cylinder is arranged on the side of the frame, the structure of the invention is better in stability. When the light load low speed working condition or the portal frame is not lifted to the high position, the rear locking oil cylinder 22 is decoupled, and the rear spring 17 works in the running process of the whole vehicle, so that the vibration transmitted to the tire by the unsmooth road surface can be absorbed, the comfort of the vehicle body is maintained, and the vibration noise is reduced. When the heavy load or high-speed working condition or the door frame is lifted to a high position, the rear locking oil cylinder 22 is locked, so that the rigid coupling of the driving wheel 4 and the vertical plate 13, namely the frame 1, is realized, the whole forklift is more stable, and the safety of the whole forklift is ensured. The front locking oil cylinders 12 on the pair of bearing wheels 3 and the rear locking oil cylinders 22 on the driving seat 14 are locked at the same instant, so that rigid coupling of all wheel trains and the frame 1 is realized, and the safety of the whole vehicle is greatly ensured.
In the first embodiment, two hinge plates 23 are symmetrically arranged on the rear side of the vertical plate 13, the driving seat 14 is located between the two hinge plates 23, the front end of the hinge plate 23 is fixedly connected with the lower part of the rear side of the vertical plate 13 between the frame back bending plates 1-1, and the rear end of the hinge plate 23 is hinged with the rear end edge of the driving seat 14. The floating hinge point is arranged at the tail of the vehicle, the rear elastic damping piece is arranged at the front side, the stress of the integral structural component is more uniform, the damping effect is better, the vehicle can run in reverse when the running direction of the front-drive forklift is more, the hinge point is arranged at the tail of the vehicle, and the stress of the wheels is in compliance with the swinging direction of the hinge point when the vehicle runs in reverse. Further, hinge shaft mounting seats 14-4 are provided on both sides of the rear end of the driving seat 14, and are connected to the hinge plate 23 through hinge shafts 14-5, shaft sleeves and the like.
The anti-separation upper connecting plate 24 and the anti-separation lower connecting plate 25 are further included, the upper end of the anti-separation upper connecting plate 24 is hinged to the rear side face of the vertical plate 13 through a bolt, the lower end of the anti-separation upper connecting plate 24 is hinged to the upper end of the anti-separation lower connecting plate 25 through a bolt, the lower end of the anti-separation lower connecting plate 25 is hinged to the front end of the driving seat 14, anti-separation pin shafts 14-6 are arranged at two ends of the front end of the driving seat 14 and are connected with the lower end of the anti-separation lower connecting plate 25. The structure can ensure that the rear elastic shock absorbing member cannot be separated and fall out when the vehicle is lifted by the size setting, and meanwhile, the rear locking oil cylinder 22 cannot interfere with and collide with the driving motor when the driving system swings after the size setting;
The separation preventing lower link plate 25 is provided with a stopper pin 26 for restricting the rotation angle of the separation preventing upper link plate 24. The structure is also provided with a limiting structure, the separation-preventing upper connecting plate 24 comprises a limiting extension part, the separation-preventing lower connecting plate 25 comprises a limiting pin 26, the connecting plate can be prevented from being out of position, if the structure is not provided, the connecting plate can rotate in the opposite direction when the connecting plate is straightened and put down again after the vehicle is lifted, the connecting plate is propped against the frame vertical plate 13, and damage is generated.
Referring to fig. 4 and 5, fig. 4 is a schematic diagram of a rear vibration damping structure of a second embodiment of the vibration damping structure of an industrial vehicle according to the present invention, and fig. 5 is a schematic diagram of a driving seat of the second embodiment of the vibration damping structure of an industrial vehicle according to the present invention.
In the second embodiment, the two sets of linkage mechanisms are symmetrically arranged, each linkage mechanism comprises a vertical rod 15 and two cross rods 16, the lower ends of the vertical rods 15 are fixedly connected with the middle parts of the edges of the two sides above the driving seat 14, the two cross rods 16 are oppositely arranged up and down, and a transverse plate 27 fixedly connected with the two cross rods 16 is arranged between the cross rods 16 on the left side and the right side. The front end of the cross rod 16 is hinged with the rear side of the vertical plate 13, and the rear end of the cross rod 16 is hinged with the vertical rod 15. Four connecting rod seats are arranged on the rear side surface of the vertical plate 13, the distance between central holes of the two connecting rod seats on one side is equal to the distance between transverse rod installation pin holes on the vertical rod 15, four identical transverse rods 16 are installed between the connecting rod seats and the vertical rod 15 to form two pairs of parallelogram four-rod mechanisms, and the driving seat 14 of the parallelogram four-rod mechanism can move up and down under the condition of keeping vertical state so as to ensure the stable operation of the driving wheel 4. And link mechanisms are arranged on two sides, so that stability is improved, and the driving seat 14 is prevented from being deviated.
Further, the rear elastic shock absorbing member comprises a rear spring 17, a rear pressing seat 18, a rear screw 19, a rear adjusting nut 20 and a positioning plate 21, the positioning plate 21 is an L-shaped plate, the vertical part at the front end of the positioning plate 21 is attached to and connected with the rear side surface of the vertical plate 13 through bolts, the horizontal part at the rear end of the positioning plate 21 is provided with a mounting through hole, the position of the driving seat 14 corresponding to the positioning plate 21 is provided with a rear spring seat 14-2, the lower end of the rear screw 19 passes through the mounting through hole downwards, then the rear screw 19 is fixedly arranged on the positioning plate 21 through a rear locking nut, the positioning plate 21 is clamped through a nut of the rear screw 19 and the rear locking nut, meanwhile, the lower end of the rear spring 17 is arranged on the rear spring seat 14-2, the rear pressing seat 18 is arranged at the upper end of the rear spring 17, the lower end of the rear screw 19 is movably connected with the rear pressing seat 18, and the rear adjusting nut 20 is further arranged on the rear screw 19, the rear adjusting nut 20 is pressed downwards, the rear adjusting nut 20 is enabled to move upwards and downwards along the rear screw 19 through rotating the rear adjusting nut 20, and then the rear pressing seat 18 is driven to move upwards and downwards, and finally the upper and lower driving seat 14 is adjusted. Specifically, two rear springs 17 can be arranged in bilateral symmetry, two rear screws 19 are correspondingly arranged, the distance between the springs is larger, the vibration reduction effect is better, and the transverse stability of the whole vehicle is better. The number and layout of the rear springs 17 or the structure of the elastic member can be adjusted according to the situation, which are all within the scope of the present invention.
The spring mechanism at the driving seat 14 and the spring at the bearing wheel 3 have different functions, the lower limiting block 11 is arranged in the spring mechanism at the bearing wheel 3, so that the front spring 6 can be adjusted to the most comfortable pretightening force of a driver, the pretightening force of the spring cannot be adjusted due to the fact that the limiting block does not exist in the spring mechanism at the driving seat 14, the optimal driving vibration reduction effect can be realized only by adjusting the spring stiffness, the spring mechanism at the driving seat 14 is mainly used for adjusting the relative height of the vertical plate 13 and the driving seat 14, namely, the ground clearance at the rear side of the frame is adjusted, and when the rear adjusting nut 20 is adjusted downwards, the frame 1 moves upwards relative to the driving seat 14, the frame 1 is lifted upwards, otherwise, the frame 1 moves downwards, and the ground clearance is reduced.
Referring to fig. 6 and 7, fig. 6 is a schematic diagram of a front vibration damping structure of an embodiment of an industrial vehicle vibration damping structure according to the present invention, and fig. 7 is a schematic diagram of a floating connection plate of an embodiment of an industrial vehicle vibration damping structure according to the present invention.
On the basis that the above embodiments provide the industrial vehicle damping structure, the industrial vehicle damping structure further comprises a floating connecting plate 5 and a front elastic damping piece, wherein the rear end of the floating connecting plate 5 is hinged with the supporting leg 2, the front end of the floating connecting plate 5 protrudes out of the front end of the supporting leg 2 and is connected with the bearing wheel 3, and two ends of the front elastic damping piece are respectively connected with the floating connecting plate 5 and the supporting leg 2. The floating connection plate 5 forms a swing arm structure capable of swinging up and down, the rear end of the swing arm structure is hinged with the supporting leg 2, the swing arm structure swings up and down around a hinged shaft, the bearing wheel 3 is arranged at the front end of the swing arm structure, when the forklift runs on an uneven road surface, the bearing wheel 3 can swing up and down relative to the supporting leg 2, and meanwhile, the buffer of swinging up and down is realized through the front elastic shock absorbing piece, so that the shock absorbing effect is realized.
Through the floating connection board 5 and the preceding elastic damping piece, make the landing leg 2 that bears wheel 3 and frame 1 front end float and be connected, preceding elastic damping piece provides the damping effect, effectively reduces fork truck and passes through the sense of shaking on the uneven road surface, reduces vibration noise, improves the driving travelling comfort and the NVH performance of whole car, noise, vibration and the sound roughness (Noise, vibration, harshness) performance that shakes promptly.
Specifically, the supporting leg 2 is of an outward opening groove body structure and comprises a vertical main board, an upper wing plate and a lower wing plate, wherein the upper wing plate and the lower wing plate are arranged on the upper edge and the lower edge of the main board, the upper wing plate and the lower wing plate are oppositely arranged to form an opening facing the outer side, the floating connecting plate 5 comprises a side plate 5-1 and a bottom plate 5-2, the side plate 5-1 is vertically arranged, and the bottom plate 5-2 is horizontally arranged. The side of the floating connecting plate 5, which is close to the corresponding supporting leg 2, is the inner side, the side, which is away from the corresponding support, of the floating connecting plate 5 is the outer side, the inner side surface of the rear end of the side plate 5-1 is attached to the outer side surface of the vertical main plate of the supporting leg 2, the bottom plate 5-2 is close to the lower wing plate and is opposite to the upper wing plate of the supporting leg 2, the front end of the side plate 5-1 is provided with a wheel shaft mounting hole 5-3, the rear end of the side plate 5-1 is provided with a front hinge hole 5-4, the bearing wheel 3 is mounted in the wheel shaft mounting hole 5-3, and a hinge shaft connected with the supporting leg 2 is inserted into the front hinge hole 5-4 to form a swing arm structure in floating connection. The bottom plate 5-2 is arranged outside the lower edge of the side plate 5-1, provides a stable installation position for the front elastic shock absorbing member, the lower end of the front elastic shock absorbing member is connected with the upper surface of the bottom plate 5-2, and the upper end of the front elastic shock absorbing member is connected with the upper wing plate of the supporting leg 2. Specifically, the middle part of the side plate 5-1 is provided with a bending structure, the rear end of the side plate 5-1 is close to the side surface of the supporting leg 2, the front end of the side plate 5-1 is far away from the side surface of the supporting leg, then the bearing wheel 3 is arranged on the inner side surface of the front end of the side plate 5-1, the bearing wheel 3 is positioned at the front end of the supporting leg 2, the bearing wheel 3 and the supporting leg 2 are positioned in the same straight line, the stability of the whole automobile is improved, meanwhile, the length of the bottom plate 5-2 is half of that of the side plate 5-1, the front end of the bottom plate 5-2 is connected to the bending position, the side plate 5-1 and the bottom plate 5-2 are integrally bent and formed, and the side plate 5-1 and the bottom plate 5-2 can be welded after being arranged in a split mode.
Further, the front elastic damping piece comprises a front spring 6, a front pressing seat 7, a front screw rod 8 and a front adjusting nut 9, wherein the upper end of the front screw rod 8 is connected with the upper wing plate of the supporting leg 2, the front pressing seat 7 is movably arranged at the lower end of the front screw rod 8 and is pressed downwards through the front adjusting nut 9 to press the front pressing seat 7, the front pressing seat 7 is pressed against the upper end of the front spring 6, and the lower end of the front spring 6 is arranged on the bottom plate 5-2. Specifically, a front spring seat 5-5 is arranged on the bottom plate 5-2, a mounting through hole is arranged at the position, corresponding to the front spring seat 5-5, of an upper wing plate of the supporting leg 2, the lower end of the front screw rod 8 downwards passes through the mounting through hole, then the front screw rod 8 is fixedly mounted on the upper wing plate through a front locking nut, the upper wing plate is clamped through a nut of the front screw rod 8 and the front locking nut, meanwhile, the lower end of the front spring 6 is mounted on the front spring seat 5-5, a front pressing seat 7 is placed at the upper end of the front spring 6, the lower end of the front screw rod 8 is movably connected with the front pressing seat 7, a front adjusting nut 9 is further mounted on the front screw rod 8, the front adjusting nut 9 downwards presses the front pressing seat 7, the front adjusting nut 9 moves up and down along the front screw rod 8 through rotation of the front adjusting nut 9, and then the front pressing seat 7 is driven to move up and down, and finally the front spring 6 is compressed or relaxed. Specifically, two front springs 6 may be disposed front and back, two front screws 8 may be disposed correspondingly, so as to improve vibration damping effect, and the number and layout of the front springs 6 may be adjusted according to the situation, or the structure of the elastic member may be adjusted, which is within the scope of the present invention.
Preferably, a vertical limiting seat 10 is installed on the bottom plate 5-2, the limiting seat 10 is located in the middle of the floating connecting plate 5 and in front of the front elastic shock absorbing member, limiting blocks 11 are arranged at the upper end and the lower end of the limiting seat 10, and the two limiting blocks 11 are respectively close to the lower side of the upper wing plate and the upper side of the lower wing plate of the supporting leg 2.
The function of the upper limit block 11 is to prevent the floating connection plate 5 from directly contacting with the upper wing plate of the supporting leg 2 when the bearing impact is too large, and the function of the lower limit block 11 is to prevent the floating connection plate 5 from directly contacting with the lower wing plate of the supporting leg 2 when the pre-tightening force is adjusted by the front spring 6. When the clearance is left between the limiting block 11 at the lower side and the lower wing plate, the front spring 6 is pressed down through the adjusting front adjusting nut 9, the swing angle of the floating connecting plate 5 in the initial state can be adjusted, namely, the ground clearance of the supporting leg 2 can be increased in the downward adjusting process of the front adjusting nut 9, the floating connecting plate 5 is limited after the limiting block 11 at the lower side is in contact with the lower wing plate for compression through the adjusting front adjusting nut 9, at the moment, the adjusting front adjusting nut 9 is pressed down, a certain pretightening force is generated by compressing the front spring 6, and the vibration reduction effects of different pretightening forces are different, so that the spring pretightening force which is most comfortable for a driver is needed to be adjusted according to actual demands.
In order to realize the vibration reduction state switching, a front lock cylinder 12 may be provided, the rear end of the front lock cylinder 12 being hinged to the leg 2, the front end of the front lock cylinder 12 being hinged to the lower corner of the rear end of the side plate 5-1. When the light load low speed working condition or the portal frame is not lifted to the high position, the front locking oil cylinder 12 is decoupled, and the front spring 6 works in the running process of the whole vehicle, so that the vibration transmitted to the tire by the unsmooth road surface can be absorbed, the comfort of the vehicle body is maintained, and the vibration noise is reduced. When the heavy load or high-speed working condition or the door frame is lifted to a high position, the front locking oil cylinder 12 is locked, so that the rigid coupling of the bearing wheel 3 and the supporting leg 2, namely the frame 1 is realized, the whole forklift is more stable, and the safety of the whole forklift is ensured.
The industrial vehicle damping structure provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that several improvements and modifications can be made to the present invention without departing from the principle of the invention, and these improvements and modifications fall within the scope of the claims of the invention.
Claims (10)
1. The utility model provides an industrial vehicle shock-absorbing structure, its characterized in that, including frame (1), install in riser (13) of frame (1) top, drive seat (14), back elasticity damping member and back locking hydro-cylinder (22), drive seat (14) articulated riser (13) trailing flank, drive wheel (4) install in drive seat (14) below, back elasticity damping member's both ends are connected respectively drive seat (14) with riser (13), back locking hydro-cylinder (22) are installed riser (13) with between drive seat (14).
2. The industrial vehicle damping structure according to claim 1, wherein two hinge plates (23) are symmetrically arranged on the rear side of the vertical plate (13), the driving seat (14) is located between the two hinge plates (23), the front end of the hinge plate (23) is fixedly connected with the lower portion of the rear side of the vertical plate (13), the rear end of the hinge plate (23) is fixedly connected to the frame back bending plate (1-1), and the driving seat (14) is hinged into a hinge hole at the rear end of the hinge plate (23) through a hinge shaft (14-5).
3. The industrial vehicle damping structure according to claim 2, further comprising an anti-separation upper connecting plate (24) and an anti-separation lower connecting plate (25), wherein the upper end of the anti-separation upper connecting plate (24) is hinged to the rear side surface of the vertical plate (13), the lower end of the anti-separation upper connecting plate (24) is hinged to the upper end of the anti-separation lower connecting plate (25), the lower end of the anti-separation lower connecting plate (25) is hinged to the front end of the driving seat (14), and a limiting pin (26) limiting the rotation angle of the anti-separation upper connecting plate (24) is arranged on the anti-separation lower connecting plate (25).
4. The industrial vehicle damping structure according to claim 1, comprising two groups of symmetrically arranged link mechanisms, wherein each link mechanism comprises a vertical rod (15) and two cross rods (16), the lower ends of the vertical rods (15) are fixedly connected with the middle parts of the edges of the two sides above the driving seat (14), the two cross rods (16) are oppositely arranged up and down, transverse plates (27) fixedly connected with the two cross rods (16) are arranged between the opposite cross rods (16) on the left side and the right side, the front ends of the cross rods (16) are hinged to the rear sides of the vertical plates (13), and the rear ends of the cross rods (16) are hinged to the vertical rods (15).
5. The industrial vehicle damping structure according to claim 1, wherein the rear elastic damping member comprises a rear spring (17), a rear pressing seat (18), a rear screw rod (19), a rear adjusting nut (20) and a positioning plate (21), the front end of the positioning plate (21) is connected with the rear side surface of the vertical plate (13), the upper end of the rear screw rod (19) is connected with the positioning plate (21), the rear pressing seat (18) is movably mounted at the lower end of the rear screw rod (19) and presses the rear pressing seat (18) downwards through the rear adjusting nut (20), the rear pressing seat (18) presses the upper end of the rear spring (17), and the lower end of the rear spring (17) is mounted at the front end above the driving seat (14).
6. The industrial vehicle damping structure according to claim 1, wherein the upper end of the rear locking cylinder (22) is hinged to the rear side surface of the vertical plate (13), the lower end of the rear locking cylinder (22) is hinged to the front end above the driving seat (14), and a locking control valve (28) is arranged on the outer side of a cylinder barrel of the rear locking cylinder (22) to realize locking and unlocking of the rear locking cylinder (22) by controlling on-off of an oil duct.
7. The industrial vehicle damping structure according to any one of claims 1 to 6, characterized in that the front end of the frame (1) is provided with a supporting leg (2), the front end of the supporting leg (2) is provided with a bearing wheel (3), the bearing wheel comprises a floating connecting plate (5) and a front elastic damping member, the rear end of the floating connecting plate (5) is hinged with the supporting leg (2), the front end of the floating connecting plate (5) protrudes out of the front end of the supporting leg (2) and is connected with the bearing wheel (3), and two ends of the front elastic damping member are respectively connected with the floating connecting plate (5) and the supporting leg (2).
8. The industrial vehicle damping structure according to claim 7, wherein the floating connection plate (5) comprises a side plate (5-1) and a bottom plate (5-2), the inner side surface of the rear end of the side plate (5-1) is attached to the outer side surface of the vertical main plate of the supporting leg (2), the bottom plate (5-2) is arranged opposite to the upper wing plate of the supporting leg (2), the front end of the side plate (5-1) is provided with a wheel axle mounting hole (5-3), the rear end of the side plate (5-1) is provided with a front hinge hole (5-4), the bottom plate (5-2) is arranged outside the lower edge of the side plate (5-1), the lower end of the front elastic damping element is connected to the upper surface of the bottom plate (5-2), and the upper end of the front elastic damping element is connected to the upper wing plate of the supporting leg (2).
9. The industrial vehicle damping structure according to claim 8, wherein the front elastic damping member comprises a front spring (6), a front pressing seat (7), a front screw (8) and a front adjusting nut (9), the upper end of the front screw (8) is connected with the upper wing plate of the supporting leg (2), the front pressing seat (7) is movably mounted at the lower end of the front screw (8) and presses the front pressing seat (7) downwards through the front adjusting nut (9), the front pressing seat (7) presses the upper end of the front spring (6), and the lower end of the front spring (6) is mounted on the bottom plate (5-2);
The vertical limiting seat (10) is arranged on the bottom plate (5-2), the limiting seat (10) is positioned in the middle of the floating connecting plate (5) and in front of the front elastic shock absorbing piece, limiting blocks (11) are arranged at the upper end and the lower end of the limiting seat (10), and the two limiting blocks (11) are respectively close to the lower surface of the upper wing plate and the upper surface of the lower wing plate of the supporting leg (2).
10. The industrial vehicle shock absorbing structure according to claim 9, characterized by comprising a front lock cylinder (12), a rear end of the front lock cylinder (12) being hinged to the leg (2), a front end of the front lock cylinder (12) being hinged to a lower corner of a rear end of the side plate (5-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511072036.5A CN120607212A (en) | 2025-07-31 | 2025-07-31 | Industrial vehicle shock absorption structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511072036.5A CN120607212A (en) | 2025-07-31 | 2025-07-31 | Industrial vehicle shock absorption structure |
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| CN202511072036.5A Pending CN120607212A (en) | 2025-07-31 | 2025-07-31 | Industrial vehicle shock absorption structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121157556A (en) * | 2025-11-14 | 2025-12-19 | 杭叉集团股份有限公司 | Pallet piling car drive wheel suspension |
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2025
- 2025-07-31 CN CN202511072036.5A patent/CN120607212A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121157556A (en) * | 2025-11-14 | 2025-12-19 | 杭叉集团股份有限公司 | Pallet piling car drive wheel suspension |
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