CN215171178U - Novel lifting device and tractor - Google Patents
Novel lifting device and tractor Download PDFInfo
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- CN215171178U CN215171178U CN202120770725.4U CN202120770725U CN215171178U CN 215171178 U CN215171178 U CN 215171178U CN 202120770725 U CN202120770725 U CN 202120770725U CN 215171178 U CN215171178 U CN 215171178U
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Abstract
The utility model relates to a novel lifting mechanism and tractor, including lifting control valve assembly and rocking arm, the one end of rocking arm is rotated with the case of lifting control valve assembly and is connected and fix a position, and the other end is used for being connected with the lifting handle transmission. The beneficial effects of the utility model are that simple structure can realize that machines promote fast, and the precision is high, and is easy and simple to handle, and it is very convenient to use.
Description
Technical Field
The utility model relates to a tractor technical field, concretely relates to novel lifting mechanism and tractor.
Background
The tractor lifting hydraulic system is mainly used for controlling the lifting, descending and tilling depth of an implement, and achieves the aim by controlling the flow direction and the pressure of a fluid medium. A force position control type lifting hydraulic system on a medium and small-horsepower tractor is a common control system. Currently, force level control type lifters mainly have two types: (1) the force position controls the raiser independently, and (2) the force position controls the raiser comprehensively. The existing force position control type lifter mainly comprises a lifter shell, a lifting control valve, a force position control mechanism, a force position feedback mechanism, a lifting oil cylinder, a lifting arm and a lifting shaft, wherein the lifting oil cylinder is arranged in the lifter shell. The lifting control valve is controlled to change direction by the operating force position operating mechanism, hydraulic oil enters the lifting oil cylinder, and the lifting oil cylinder drives the lifting arm to rotate through the lifting shaft so as to lift the machine tool. When the machine descends, the machine can only depend on the gravity of the machine, and cannot be assisted by external force. The force position control type lifter is characterized in that: the operation is simple, the requirement on the operation level of a manipulator is low, the good tilling depth uniformity can be ensured, and the automatic adjustment of the tilling depth can be realized. The force position control positions of the force position control type lifter are continuous, and each position of the force position control corresponds to a lifting height. When the machine tool is lifted to the highest position, the operating handle needs to be operated to the position with the highest corresponding lifting from the working position, the operating stroke is large, and the operation is complex.
The existing lifter regardless of the force position alone or the force position comprehensive control type mainly comprises a lifter shell, a lifting control valve, a force position control mechanism, a force position feedback mechanism, an upper pull rod support, a lifting oil cylinder, a lifting arm and a lifting shaft. The lifting oil cylinder is arranged in the lifter shell, so that the maintenance is difficult, and the lifting oil cylinder is a horizontal single oil cylinder; the lifter is connected with the multi-way valve through a pipeline, the structure is complex, the spatial arrangement is difficult, and the universality is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a novel lifting mechanism and a tractor are provided, which aim to solve the technical problem.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
the utility model provides a novel lifting mechanism, includes lifting control valve assembly and rocking arm, the one end of rocking arm with the case of lifting control valve assembly rotates to be connected and fixes a position, and the other end is used for being connected with the lifting handle transmission.
The utility model has the advantages that: when the lifting device is used, the other end of the rocker arm is connected with one end of a lifting handle through a flexible shaft, the lifting handle only has two lifting positions and two descending positions, the two positions are positioned by positioning mechanisms, and the lifting handle is reset through a reset spring; when the force position control function is used, the lifting handle is quickly lifted to be in a descending position; when the quick lifting function is used, the machine can be directly lifted to the highest position only by shifting the quick lifting handle to the lifting position; after the lifting is finished, the machine tool is required to be restored to the original position, and the machine tool can be automatically restored to the position set by force position operation only by shifting the quick lifting handle to the descending position. The utility model discloses simple structure can realize that machines promote fast, and the precision is high, and is easy and simple to handle, and it is very convenient to use.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
And the lifting control valve assembly is characterized by further comprising a lifting shaft, wherein the lifting shaft is horizontally and rotatably arranged on one side of the lifting control valve assembly, two ends of the lifting shaft are respectively fixedly sleeved with an outer lifting arm, and one end of each outer lifting arm is in transmission connection with a lifting rod.
The beneficial effect who adopts above-mentioned further scheme is that when using, rotates the lift axle through the mode that the skilled person in the art can think, and the lift axle drives the lift bar through two outer lift arms and reciprocates to realize corresponding operation.
Furthermore, two lifting oil cylinders are fixedly installed on one side of the lifting shaft, which is far away from the lifting control valve assembly, and the telescopic ends of the two lifting oil cylinders are respectively and rotatably connected with the middle parts of the two outer lifting arms; and the two lifting oil cylinders stretch synchronously and drive the two outer lifting arms to turn over up and down.
The beneficial effect of adopting above-mentioned further scheme is that during the operation, two lift cylinder are synchronous flexible to drive two outer lift arms and overturn from top to bottom, realize automatic lifting.
Furthermore, one end of each of the two outer lifting arms is connected through a pin shaft, one end of each lifting rod is rotatably connected with the pin shaft, and the other end of each lifting rod is in transmission connection with an operating handle.
The beneficial effects of adopting above-mentioned further scheme are that simple structure, reasonable in design adopts the operation of double-cylinder, and the increase lifting force guarantees going on smoothly of lifting operation.
And the two ends of the position feedback mechanism are respectively and rotatably connected with the lifting shaft and the valve core of the lifting control valve assembly.
The technical scheme has the advantages that during operation, the position feedback mechanism is used for reflecting the position change of the valve core of the lifting control valve assembly and transmitting corresponding information to the control system, so that the rotating position information of the lifting control valve assembly can be fed back in time, and accurate control is realized.
Further, the position feedback mechanism is a connecting rod assembly.
The beneficial effects of adopting above-mentioned further scheme are that simple structure, reasonable in design realizes promoting the quick feedback of control valve assembly position.
The lifting control valve assembly is characterized by further comprising a force feedback mechanism and an upper pull rod support, wherein the upper pull rod support is fixedly installed on one side, far away from the lifting control valve assembly, of the lifting shaft, and two ends of the force feedback mechanism are respectively in rotating connection with the upper pull rod support and a valve core of the lifting control valve assembly.
The technical scheme has the advantages that during operation, the force feedback mechanism is used for reflecting the change of the valve core force of the lifting control valve assembly and transmitting corresponding information to the control system, so that the force information of the rotation of the lifting control valve assembly can be fed back in time, and accurate control is realized.
Further, the force feedback mechanism is a link mechanism.
The beneficial effects of adopting above-mentioned further scheme are that simple structure, reasonable in design realizes promoting the quick feedback of control valve assembly power.
The lifting control valve assembly is fixedly arranged on the lifting shell, and the lifting shaft is horizontally and rotatably arranged on the lifting shell; the multi-way valve is fixedly arranged on the lifting shell and used for controlling an implement oil cylinder of a lifting implement.
The further scheme has the advantages of compact structure, high integration level and space saving; in addition, the multi-way valve is connected through an internal oil circuit, so that pipeline connection is omitted, and different groups of the multi-way valve can be selected.
The utility model discloses still relate to a tractor, include as above novel lifting mechanism.
The beneficial effects of adopting the further scheme are that the modular design is adopted, the structure is reasonable, and the generalization degree is high; the force position control type lifter, the strong pressure control type lifter and the electric control lifter can be combined by splitting and combining all the components, and the three lifters with different control types are multifunctional and convenient to use.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a rear view of the present invention;
FIG. 3 is a schematic structural view of a lifting position of the lifting handle of the present invention;
fig. 4 is a schematic structural view of the descending position of the middle lifting handle of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the lifting control valve assembly comprises a lifting control valve assembly, 2, a rocker arm, 3, a lifting shaft, 4, an outer lifting arm, 5, a position feedback mechanism, 6, a force feedback mechanism, 7, an upper pull rod support, 8, a lifting shell, 9, a reset spring, 10, a multi-way valve, 11, a lifting handle, 12, a positioning steel ball, 13 and a connecting spring.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 4, the utility model provides a novel lifting device, including lifting control valve assembly 1 and rocking arm 2, the one end of rocking arm 2 is rotated through pivot and lifting control valve assembly 1's case and is connected and fix a position, and the other end is used for being connected with lifting handle 11 transmission, adopts the pivot to connect usually. When the lifting device is used, the other end of the rocker arm 2 is connected with one end of a lifting handle 11 through a flexible shaft, the lifting handle 11 only has two lifting positions and two descending positions, the two positions are positioned by positioning mechanisms, and the two positions are reset through a reset spring 9; when the force position control function is used, the quick lifting handle 11 is in a descending position; when the quick lifting function is used, the machine can be directly lifted to the highest position only by shifting the quick lifting handle 11 to the lifting position; after the lifting is finished, the machine tool is required to be restored to the original position, and the machine tool can be automatically restored to the position set by force position operation only by shifting the quick lifting handle 11 to the descending position. The utility model discloses simple structure can realize that machines promote fast, and the precision is high, and is easy and simple to handle, and it is very convenient to use.
The two ends of the return spring 9 are respectively fixedly connected with one end of the rocker arm 2 and the lifting shell 8, namely when the rocker arm 2 is located at a working position, the return spring 9 is in a stretching state, and then the rocker arm 2 returns to a non-working position under the action of the elastic force of the return spring 9.
The specific positioning mode of the lifting handle 11 is as follows: the lifting handle 11 is rotatably arranged in a vehicle cab through a rotating shaft, the lower end of the lifting handle is in transmission connection with the other end of the rocker arm 2 through a flexible shaft, and two ends of the flexible shaft are respectively and fixedly connected with one end of the rocker arm 2 and the lower end of the lifting handle 11; a positioning steel ball 12 is arranged in the cab, the positioning steel ball 12 is fixedly connected with the cab through a connecting spring 13, and a lifting position clamping groove and a descending position clamping groove which are matched with the positioning steel ball 12 are arranged on the lifting handle 11 at intervals from top to bottom. During operation, when the lifting handle 11 is turned to a lifting position, the positioning steel ball 12 is clamped into the lifting position clamping groove (as shown in fig. 3); when the lifting handle 11 is turned to the descending position, the positioning steel ball 12 is clamped in the descending position clamping groove (as shown in fig. 4), so that the lifting handle 11 is quickly positioned.
Example 1
On the basis of the structure, the multi-way valve 10 and the lifting shell 8 with an opening at the upper side are further included in the embodiment, the lifting control valve assembly 1 is fixedly installed on the lifting shell 8 through bolts, the lifting shaft 3 is horizontally and rotatably installed on the lifting shell 8, and two sides of the lifting shaft are respectively and rotatably connected with two sides of the lifting shell 8; the multi-way valve 10 is fixedly arranged on the lifting shell 8 and used for controlling an implement oil cylinder of a lifting implement, and has the advantages of compact structure, high integration level and space saving.
When in use, the lifting shell 8 is fixed on a rear axle shell of the tractor through bolts.
The specific structure of the multi-way valve 10 and the connection and control relationship between the multi-way valve and the machine oil cylinder are all the prior art, and are not described herein again; in addition, the telescopic end of the machine oil cylinder is fixedly connected with a machine.
Example 2
On the basis of embodiment one, this embodiment still includes lifting shaft 3, lifting shaft 3 level pivoted installs in one side of promoting control valve assembly 1, and its both ends rotate with the both sides that promote casing 8 respectively to be connected, and its both ends are fixed the cover respectively and are equipped with outer lift arm 4, and the one end of two outer lift arms 4 is connected with the lifting bar transmission respectively, and concrete mounting means is: one end of each of the two outer lifting arms 4 is connected through a pin shaft, one end of each lifting rod is rotatably sleeved on the pin shaft, and a through hole matched with the pin shaft is formed in one end of each lifting rod. During the use, rotate lift shaft 3 through the mode that the skilled person in the art can think, lift shaft 3 drives the lift bar through two outer lift arms 4 and reciprocates to realize corresponding operation.
Example 3
On the basis of the second embodiment, in this embodiment, two lifting cylinders are fixedly installed on one side of the lifting shaft away from the lifting control valve assembly 1, the two lifting cylinders are fixed on one end of the lifting housing 8 through bolts, and the telescopic ends of the two lifting cylinders are respectively rotatably connected with the middle parts of the two outer lifting arms 4 through pin shafts; the two lifting oil cylinders stretch synchronously and drive the two outer lifting arms 4 to turn over up and down. During operation, the two lifting oil cylinders stretch out and draw back synchronously and drive the two outer lifting arms 4 to turn over up and down, so that automatic lifting is realized.
Except the above embodiment, one lifting cylinder may be used, but the lifting force of the scheme is obviously smaller than that of the above scheme, and the smooth completion of the lifting operation cannot be guaranteed.
Example 4
On the basis of embodiment two, in this embodiment, the one end of two outer lifting arms 4 is through round pin hub connection, and one of lifting bar serves and is equipped with the through-hole to the round pin epaxial is located to the cover that rotates, and the other end is used for being connected with the operating handle transmission, rotates through round pin axle and operating handle promptly and is connected, simple structure, and reasonable in design adopts the double-cylinder operation, and the increase lifting force guarantees going on smoothly of promotion operation.
Except the above embodiment, the two sides of one end of the lifting rod can be respectively connected with one ends of the two outer lifting arms 4 through rotating shafts, the two rotating shafts are integrally formed with the lifting rod, and the ends, far away from each other, of the two rotating shafts are respectively connected with one ends of the two outer lifting arms 4 in a rotating manner.
Example 5
On the basis of the second embodiment, the present embodiment further includes a position feedback mechanism 5, and two ends of the position feedback mechanism 5 are respectively connected with the lifting shaft 3 and the valve core of the lifting control valve assembly 1 through a pin shaft in a rotating manner. During operation, the position feedback mechanism 5 is used for reflecting the position change of the valve core of the lifting control valve assembly 1 and transmitting corresponding information to the control system, so that the rotating position information of the lifting control valve assembly 1 can be fed back in time, and accurate control is realized.
One end of the lifting shaft 3 is connected with the transmission rod, the other end of the transmission rod extends to the control system, the position information of the valve core of the lifting control valve assembly 1 is fed back to the lifting shaft 3 by the position feedback mechanism, and the copper hot pot transmission rod of the lifting shaft 3 is transmitted to the control system, so that the control system can timely know the change of the valve core of the lifting control valve assembly 1.
Example 6
On the basis of the fifth embodiment, in the present embodiment, the position feedback mechanism 5 is preferably a connecting rod assembly, and has a simple structure and a reasonable design, so as to realize rapid feedback of the position of the lift control valve assembly 1.
Example 7
On the basis of the second embodiment, the present embodiment further includes a force feedback mechanism 6 and an upper tie rod support 7, the upper tie rod support 7 is fixedly installed on one side of the lifting shaft 3 away from the lifting control valve assembly 1, that is, is fixed at the other end of the lifting housing 8 through a bolt; two ends of the force feedback mechanism 6 are respectively connected with the upper pull rod support 7 and the valve core of the lifting control valve assembly 1 in a rotating way through pin shafts. During operation, the force feedback mechanism 6 is used for reflecting the change of the valve core force of the lifting control valve assembly 1 and transmitting corresponding information to the control system, so that the force information of the rotation of the lifting control valve assembly 1 can be fed back in time, and accurate control is realized.
Example 8
On the basis of the seventh embodiment, in the present embodiment, the force feedback mechanism 6 is preferably a link mechanism, and has a simple structure and a reasonable design, so as to realize the rapid feedback of the force of the lift control valve assembly 1.
One end of the lifting shaft 3 is connected with the transmission rod, the other end of the transmission rod extends to the control system, the position information of the valve core of the lifting control valve assembly 1 is fed back to the lifting shaft 3 by the position feedback mechanism, and the copper hot pot transmission rod of the lifting shaft 3 is transmitted to the control system, so that the control system can timely know the change of the valve core of the lifting control valve assembly 1.
Example 9
On the basis of the structure, the embodiment also relates to a tractor which comprises the novel lifter. The embodiment has the advantages of modular design, reasonable structure and high generalization degree; the force position control type lifter, the strong pressure control type lifter and the electric control lifter can be combined by splitting and combining all the components, and the three lifters with different control types are multifunctional and convenient to use.
The working principle of the utility model is as follows:
when the force (position) control is performed, the lifting handle 11 is in the lowering position. When the machine tool needs to be lifted, the force control handle or the position control handle is pulled to a handle position corresponding to the lifting height of the machine tool from the initial position, and the machine tool can be lifted to the corresponding position height to be stopped and kept. When the machine tool is required to be lowered from the lifting position, the force control handle or the position control handle is pulled to the lowering position from the corresponding lifting position, and the machine tool can be lowered.
When the quick lifting handle 11 is operated from the lifting position to the lowering position, the implement can be restored from the highest position to the position with the corresponding height of the force (position) control handle. Thereafter, the force (position) control operation can be normally performed.
When the lifting device is used, the other end of the rocker arm 2 is connected with one end of the lifting handle 11 through the flexible shaft, the lifting handle 11 only has two working positions and a non-working position, the two positions are both provided with positioning mechanisms for positioning, and the two positions are reset through the reset spring; when the force position control function is used, the quick lifting handle 11 is in a descending position; when the quick lifting function is used, the machine can be directly lifted to the highest position only by shifting the quick lifting handle 11 to the lifting position; when the lifting is finished and the machine tool needs to be restored to the original position, the machine tool can be automatically restored to the position set by force position operation only by shifting the quick lifting handle 11 to the descending position;
in addition, the operating handle is manually lifted, the two outer lifting arms are driven by the lifting rod to turn over up and down, and meanwhile, the two lifting oil cylinders act to provide enough lifting force; meanwhile, the valve core force and position changes of the lifting control valve assembly 1 are reflected through the position feedback mechanism 5 and the force feedback mechanism 6 respectively, and corresponding information is transmitted to the control system, so that the information of the force and the position of the rotation of the lifting control valve assembly 1 can be fed back in time, and accurate control is realized.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A novel lifting device is characterized in that: the lifting control valve assembly comprises a lifting control valve assembly (1) and a rocker arm (2), wherein one end of the rocker arm (2) is rotatably connected with and positioned on a valve core of the lifting control valve assembly (1), and the other end of the rocker arm is in transmission connection with a lifting handle (11).
2. The new riser of claim 1, wherein: still include lift shaft (3), lift shaft (3) horizontal rotation installs one side of lift control valve assembly (1), its both ends are fixed the cover respectively and are equipped with outer lift arm (4), two the one end of outer lift arm (4) is connected with the lifter transmission respectively.
3. The new riser of claim 2, wherein: two lifting oil cylinders are fixedly mounted on one side, away from the lifting control valve assembly (1), of the lifting shaft (3), and the telescopic ends of the two lifting oil cylinders are respectively in rotary connection with the middle parts of the two outer lifting arms (4); the two lifting oil cylinders stretch out and draw back synchronously and drive the two outer lifting arms (4) to turn over up and down.
4. The new riser of claim 2, wherein: one ends of the two outer lifting arms (4) are connected through a pin shaft, one end of the lifting rod is rotatably connected with the pin shaft, and the other end of the lifting rod is in transmission connection with an operating handle.
5. The new riser of any one of claims 2-4, wherein: the lifting control valve assembly is characterized by further comprising a position feedback mechanism (5), wherein two ends of the position feedback mechanism (5) are respectively in rotating connection with the lifting shaft (3) and a valve core of the lifting control valve assembly (1).
6. The new riser of claim 5, wherein: the position feedback mechanism (5) is a connecting rod assembly.
7. The new riser of any one of claims 2-4, wherein: the lifting control valve assembly is characterized by further comprising a force feedback mechanism (6) and an upper pull rod support (7), wherein the upper pull rod support (7) is fixedly installed on one side, far away from the lifting control valve assembly (1), of the lifting shaft (3), and two ends of the force feedback mechanism (6) are respectively connected with the upper pull rod support (7) and a valve core of the lifting control valve assembly (1) in a rotating mode.
8. The new riser of claim 7, wherein: the force feedback mechanism (6) is a link mechanism.
9. The new riser of any one of claims 2-4, wherein: the lifting control valve assembly is characterized by further comprising a multi-way valve (10) and a lifting shell (8) with an upper side opening, the lifting control valve assembly (1) is fixedly mounted on the lifting shell (8), and the lifting shaft (3) is horizontally and rotatably mounted on the lifting shell (8); the multi-way valve (10) is fixedly arranged on the lifting shell (8) and is used for controlling an implement oil cylinder of a lifting implement.
10. A tractor, its characterized in that: comprising a new riser according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120770725.4U CN215171178U (en) | 2021-04-15 | 2021-04-15 | Novel lifting device and tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120770725.4U CN215171178U (en) | 2021-04-15 | 2021-04-15 | Novel lifting device and tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215171178U true CN215171178U (en) | 2021-12-14 |
Family
ID=79357941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120770725.4U Active CN215171178U (en) | 2021-04-15 | 2021-04-15 | Novel lifting device and tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215171178U (en) |
-
2021
- 2021-04-15 CN CN202120770725.4U patent/CN215171178U/en active Active
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Address after: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee after: Weichai Lovol Intelligent Agricultural Technology Co.,Ltd. Address before: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee before: Weichai leiwo Heavy Industry Co.,Ltd. |