CN219449232U - Working condition leveling assembly and leveling hydraulic system of telescopic boom forklift - Google Patents
Working condition leveling assembly and leveling hydraulic system of telescopic boom forklift Download PDFInfo
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- CN219449232U CN219449232U CN202223057216.0U CN202223057216U CN219449232U CN 219449232 U CN219449232 U CN 219449232U CN 202223057216 U CN202223057216 U CN 202223057216U CN 219449232 U CN219449232 U CN 219449232U
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- leveling
- valve
- fixing seat
- oil
- electromagnetic valve
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- 239000000725 suspension Substances 0.000 claims abstract description 44
- 239000003921 oil Substances 0.000 claims description 68
- 239000010720 hydraulic oil Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Abstract
The utility model discloses a working condition leveling assembly and a leveling hydraulic system of a telescopic boom forklift in the technical field of forklift working condition adjustment, and aims to solve the problems that in the prior art, the forklift is easy to jolt, unsafe and the like; it comprises a leveling device and a suspension device; the leveling device comprises a leveling oil cylinder, a first upper fixing seat and a first lower fixing seat; one end of the leveling oil cylinder is fixed on the frame through a first upper fixing seat, and the other end of the leveling oil cylinder is fixed on the front axle through a first lower fixing seat; the suspension device comprises a suspension oil cylinder, a second upper fixing seat and a second lower fixing seat; one end of the suspension cylinder is fixed on the frame through a second upper fixing seat, and the other end of the suspension cylinder is fixed on the rear axle through a second lower fixing seat; the utility model is suitable for the forklift and can improve the stability of the whole forklift during the working process.
Description
Technical Field
The utility model relates to a working condition leveling assembly and a leveling hydraulic system of a telescopic boom forklift, and belongs to the technical field of forklift working condition adjustment.
Background
The telescopic forklift is a device for realizing rapid loading, unloading and transferring of cargoes, and is widely used in construction sites, industrial enterprises, agriculture and animal husbandry and other occasions. The forklift consists of front and rear axles, supporting legs, a fork, a telescopic arm support and the like, and can fork, load and unload cargoes by itself; the telescopic forklift is an off-road vehicle, and the road conditions of running and operating roads are complex. In the existing forklift, a rear axle swings freely in the running process of a road with a focus, so that the shock absorption performance is not achieved, and long-term driving influences driving feeling; secondly, the axle is always in a free swinging state when the whole vehicle works in a loading way, so that the lateral instability of the whole vehicle is easily caused, and cargoes are easily caused to fall when the whole vehicle works in a high-altitude way; and is greatly affected by terrain under the working condition.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a working condition leveling assembly and a leveling hydraulic system of a telescopic boom forklift; can adjust fork truck steady operation, improve shock-absorbing capacity.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
in one aspect, the utility model provides a working condition leveling assembly of a telescopic boom forklift, which comprises a leveling device and a suspension device; the leveling device comprises a leveling oil cylinder, a first upper fixing seat and a first lower fixing seat; one end of the leveling oil cylinder is fixed on the frame through a first upper fixing seat, and the other end of the leveling oil cylinder is fixed on the front axle through a first lower fixing seat;
the suspension device comprises a suspension oil cylinder, a second upper fixing seat and a second lower fixing seat; one end of the suspension cylinder is fixed on the frame through a second upper fixing seat, and the other end of the suspension cylinder is fixed on the rear axle through a second lower fixing seat.
On the other hand, the utility model provides a working condition leveling hydraulic system of a telescopic boom forklift, which comprises a leveling module, a follow-up module and the working condition leveling assembly of the telescopic boom forklift;
the leveling module comprises a first electromagnetic valve and a balance valve; the first oil outlet and the second oil outlet of the first electromagnetic valve are correspondingly communicated with a rodless cavity and a rod cavity of the leveling oil cylinder respectively through the balance valve; the first path of hydraulic oil of the oil pump enters the first electromagnetic valve; when the first electromagnetic valve is electrified, a piston rod of the leveling oil cylinder stretches to realize left and right overturning of the frame;
the follow-up module comprises a pressure reducing valve, an overflow valve, a second electromagnetic valve and a third electromagnetic valve; the second path of hydraulic oil of the oil pump respectively enters the second electromagnetic valve, the third electromagnetic valve and the overflow valve through the pressure reducing valve; the rod cavity of the suspension oil cylinder is communicated with the second electromagnetic valve, and the rodless cavity is communicated with the third electromagnetic valve; when the second/third electromagnetic valve is powered on, the suspension cylinder is used for absorbing vibration generated by floating of the rear axle.
Further, the first electromagnetic valve is a two-position four-way electromagnetic valve.
Further, the second electromagnetic valve and the third electromagnetic valve are two-position two-way electromagnetic valves.
Further, the third oil outlet of the first electromagnetic valve is communicated with the oil tank.
Further, oil outlets of the pressure reducing valve and the overflow valve are communicated with an oil tank.
Further, the pressure reducing valve is communicated with the rod cavity of the suspension cylinder through a first one-way valve.
Further, the pressure reducing valve is communicated with the rodless cavity of the suspension cylinder through a second one-way valve.
Compared with the prior art, the utility model has the beneficial effects that:
the working condition leveling assembly for the telescopic boom forklift truck is correspondingly fixed on the front axle, the rear axle and the frame of the forklift truck through the leveling device and the suspension device and is used for adjusting the front axle to be stable and the rear axle to slow down vibration.
The leveling assembly is connected with the hydraulic system through the working condition leveling of the telescopic boom forklift, when the whole forklift is leveled, the first electromagnetic valve is controlled to be electrified, the frame can be turned left and right, and the balance of the forklift is automatically adjusted; when the whole vehicle runs, the second electromagnetic valve and the third electromagnetic valve are powered on, and the suspension cylinder follows to realize the damping effect of the whole vehicle; when the vehicle stops working, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are not electrified, so that the axle self-locking function is realized; the overflow valve in the follow-up module can play a safety protection role on the working condition leveling hydraulic system of the telescopic boom forklift and prevent the pressure of the suspension cylinder from being too large.
Drawings
FIG. 1 is a control schematic diagram of a working condition leveling hydraulic system of a telescopic boom forklift;
FIG. 2 is a schematic diagram of a boom truck mounted suspension cylinder;
FIG. 3 is a schematic view of a center axis of rotation of a telescopic boom forklift;
fig. 4 is a schematic diagram of the installation of a leveling cylinder of the telescopic boom forklift;
FIG. 5 is an enlarged view of FIG. 2;
FIG. 6 is a telescoping boom forklift leveling schematic;
FIG. 7 is a schematic view of a telescopic boom forklift;
FIG. 8 is a schematic diagram of the operation of the telescopic boom forklift;
FIG. 9 is a right side view of the telescopic boom fork truck;
in the figure: 1. leveling oil cylinders; 2. a suspension cylinder; 3. a first upper fixing seat; 4. a first lower fixing seat; 5. a second upper fixing seat; 6. a second lower fixing seat; 7. a front axle; 8. a rear axle; 9. a frame; 10. a first electromagnetic valve; 11. a balancing valve; 12. a pressure reducing valve; 13. an overflow valve; 14. a second electromagnetic valve; 15. a third electromagnetic valve; 16. a first one-way valve; 17. a second one-way valve; 18. a first oil outlet; 19. a second oil outlet; 20. a third oil outlet; 21. a first oil inlet; 22. an oil pump.
Description of the embodiments
The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
Examples
As shown in connection with fig. 2 to 9; the embodiment provides a telescopic boom forklift working condition leveling assembly, which comprises a leveling device and a suspension device. The forklift is provided with a frame 9, a front axle 7 and a rear axle 8. The front and the rear of the frame 9 are movably connected with the front axle 7 and the rear axle 8 in a hinged mode, and the connecting line of the two hinged points is a rotation center shaft.
The leveling device comprises a leveling oil cylinder 1, a first upper fixing seat 3 and a first lower fixing seat 4. The first upper fixing seat 3 is fixedly assembled on the frame 9, and one end of the leveling cylinder 1 is hinged with the first upper fixing seat 3; the first lower fixing seat 4 is assembled on the front axle 7, and the other end of the leveling cylinder 1 is hinged with the first lower fixing seat 4. When the piston rod of the leveling cylinder 1 stretches, the frame 9 can be lifted to turn left and right along the rotation center shaft.
The suspension device comprises a suspension cylinder 2, a second upper fixing seat 5 and a second lower fixing seat 6. The second upper fixed seat 5 is assembled on the frame 9, and one end of the suspension cylinder 2 is hinged with the second upper fixed seat 5; the second lower fixing seat 6 is assembled on the rear axle 8, and the other end of the suspension cylinder 2 is hinged with the second lower fixing seat 6. The leveling cylinder 1 and the suspension cylinder 2 are fixed in a hinged connection mode, so that the stress at the joint of the leveling cylinder 1 and the suspension cylinder 2 during jolt oscillation can be reduced, and the service life is prolonged; the disassembly and the assembly are convenient and easy to replace.
Can set up according to fork truck's reality demand: one leveling device is arranged on the frame 9 at one side and connected with the front axle 7, and one suspension device is correspondingly arranged on the frame 9 at the other side and connected with the rear axle 8; or the two leveling devices are respectively arranged at two sides of the frame 9 and connected with the front frame 9, and the two corresponding hanging devices are correspondingly arranged at two sides of the frame 9 and connected with the rear frame 9.
Examples
As shown in connection with fig. 1; the embodiment provides a working condition leveling hydraulic system of a telescopic boom forklift, which comprises a leveling module, a follow-up module and any one of the working condition leveling assemblies of the telescopic boom forklift in the embodiment 1; the levelling module comprises a first solenoid valve 10 and a balancing valve 11.
An oil outlet P1 of one path of hydraulic oil of the oil pump 22 is communicated with a first oil inlet 21 of the first electromagnetic valve 10. The first oil outlet 18 of the first electromagnetic valve 10 is communicated with the oil inlet v1 of the balance valve 11, and the second oil outlet 19 of the first electromagnetic valve 10 is communicated with the v2 oil inlet of the balance valve 11. The rodless cavity of the leveling cylinder 1 is communicated with the oil outlet v3 of the balance valve 11, and the rod cavity of the leveling cylinder 1 is communicated with the oil outlet v4 of the balance valve 11.
An oil outlet P2 of the other path of hydraulic oil of the oil pump 22 is connected with an oil inlet of the pressure reducing valve 12. The oil outlet of the pressure reducing valve 12 is respectively communicated with the overflow valve 13, the second electromagnetic valve 14 and the third electromagnetic valve 15. The oil outlet of the second electromagnetic valve 14 is communicated with the rod cavity of the suspension cylinder 2; the oil outlet of the third electromagnetic valve 15 is communicated with the rodless cavity of the suspension cylinder 2.
Alternatively, the first solenoid valve 10 may be a two-position four-way solenoid valve, and the second solenoid valve 14 and the third solenoid valve 15 may each be a two-position two-way solenoid valve.
Optionally, the third oil outlet 20 of the first electromagnetic valve 10 is connected with an oil tank, and redundant oil returns to the oil tank through a third oil port; the leakage port of the pressure reducing valve 12 and the oil outlet of the overflow valve 13 are communicated with an oil tank, and are used for feeding oil into or discharging oil from the suspension oil cylinder 2, so that the suspension oil cylinder 2 is prevented from being damaged due to overlarge pressure, the pressure stability of the pressure reducing valve 12 is ensured, and the safe operation of the working condition leveling hydraulic system of the telescopic boom forklift is protected.
Optionally, a first one-way valve 16 is communicated between the pressure reducing valve 12 and the rod cavity of the suspension cylinder 2, so that hydraulic oil can be rapidly supplemented into the rod cavity, and the influence of the too small pressure of the rod cavity on the damping effect can be avoided; the second one-way valve 17 is communicated between the pressure reducing valve 12 and the rodless cavity of the suspension cylinder 2, so that hydraulic oil can be rapidly supplemented to the rodless cavity, and the influence on the damping effect due to too small pressure of the rodless cavity can be avoided.
When the telescopic boom forklift is positioned on an uneven operation road surface, the hydraulic oil of the oil pump 22 is respectively electrified by controlling the first electromagnetic valve 10, the second electromagnetic valve 14 and the third electromagnetic valve 15; after the first electromagnetic valve 10 is powered on, the frame 9 can enable the frame 9 to rotate left and right along the rotation center shaft for leveling through the extension and contraction of a piston rod of the leveling oil cylinder 1, and the frame 9 has a leveling function and can prevent cargoes from turning over during operation and danger;
when the telescopic boom forklift is in a running working condition, the first electromagnetic valve 10 and the second electromagnetic valve 14 are not powered, the third electromagnetic valve 15 is powered, the suspension cylinder 2 rotates normally, vibration of the rear axle 8 can be relieved, the telescopic boom forklift is enabled to run, vibration is reduced, and the vehicle body is stabilized.
When the telescopic boom forklift is in the operation process, hydraulic oil of the oil pump 22 does not enter the first electromagnetic valve 10, the second electromagnetic valve 14 and the third electromagnetic valve 15, namely, the first electromagnetic valve 10, the second electromagnetic valve 14 and the third electromagnetic valve 15 are not powered, and are in a self-locking state, and the leveling oil cylinder 1 and the suspension oil cylinder 2 are not operated, so that the whole vehicle operation is stable.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (8)
1. The working condition leveling assembly for the telescopic boom forklift is characterized by comprising a leveling device and a suspension device; the leveling device comprises a leveling oil cylinder, a first upper fixing seat and a first lower fixing seat; one end of the leveling oil cylinder is fixed on the frame through a first upper fixing seat, and the other end of the leveling oil cylinder is fixed on the front axle through a first lower fixing seat;
the suspension device comprises a suspension oil cylinder, a second upper fixing seat and a second lower fixing seat; one end of the suspension cylinder is fixed on the frame through a second upper fixing seat, and the other end of the suspension cylinder is fixed on the rear axle through a second lower fixing seat.
2. The working condition leveling hydraulic system of the telescopic boom forklift truck is characterized by comprising a leveling module, a follow-up module and the working condition leveling assembly of the telescopic boom forklift truck, which is described in claim 1;
the leveling module comprises a first electromagnetic valve and a balance valve; the first oil outlet and the second oil outlet of the first electromagnetic valve are correspondingly communicated with a rodless cavity and a rod cavity of the leveling oil cylinder respectively through the balance valve; the first path of hydraulic oil of the oil pump enters the first electromagnetic valve; when the first electromagnetic valve is electrified, a piston rod of the leveling oil cylinder stretches to realize left and right overturning of the frame;
the follow-up module comprises a pressure reducing valve, an overflow valve, a second electromagnetic valve and a third electromagnetic valve; the second path of hydraulic oil of the oil pump respectively enters the second electromagnetic valve, the third electromagnetic valve and the overflow valve through the pressure reducing valve; the rod cavity of the suspension oil cylinder is communicated with the second electromagnetic valve, and the rodless cavity is communicated with the third electromagnetic valve; when the second/third electromagnetic valve is powered on, the suspension cylinder is used for absorbing vibration generated by floating of the rear axle.
3. The telescopic boom forklift operating condition leveling hydraulic system according to claim 2, wherein the first solenoid valve is a two-position four-way solenoid valve.
4. The telescopic boom forklift operating mode leveling hydraulic system according to claim 2, wherein the second solenoid valve and the third solenoid valve are two-position two-way solenoid valves.
5. The telescopic boom forklift operating condition leveling hydraulic system of claim 2, wherein the third oil outlet of the first solenoid valve is in communication with an oil tank.
6. The telescopic boom forklift operating mode leveling hydraulic system according to claim 2, wherein the oil outlets of the relief valve and the overflow valve are in communication with an oil tank.
7. The telescopic boom forklift operating mode leveling hydraulic system according to claim 2, wherein the pressure reducing valve is communicated with the rod cavity of the suspension cylinder through a first one-way valve.
8. The telescopic boom forklift operating mode leveling hydraulic system according to claim 2, wherein the pressure reducing valve is communicated with the rodless cavity of the suspension cylinder through a second one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223057216.0U CN219449232U (en) | 2022-11-17 | 2022-11-17 | Working condition leveling assembly and leveling hydraulic system of telescopic boom forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223057216.0U CN219449232U (en) | 2022-11-17 | 2022-11-17 | Working condition leveling assembly and leveling hydraulic system of telescopic boom forklift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219449232U true CN219449232U (en) | 2023-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223057216.0U Active CN219449232U (en) | 2022-11-17 | 2022-11-17 | Working condition leveling assembly and leveling hydraulic system of telescopic boom forklift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219449232U (en) |
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2022
- 2022-11-17 CN CN202223057216.0U patent/CN219449232U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20240104 Address after: No. 17, the Pearl River East Road, Xuzhou High tech Industrial Development Zone, Xuzhou City, Jiangsu Province, 221000 Patentee after: XCMG FIRE-FIGHTING SAFETY EQUIPMENT Co.,Ltd. Address before: No. 99, Chengyi Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province, 221000 Patentee before: Xuzhou Xugong Port Machinery Co.,Ltd. |