CN202023209U - Overload protecting device for land scraper turning circle worm-gear case - Google Patents
Overload protecting device for land scraper turning circle worm-gear case Download PDFInfo
- Publication number
- CN202023209U CN202023209U CN2011200648711U CN201120064871U CN202023209U CN 202023209 U CN202023209 U CN 202023209U CN 2011200648711 U CN2011200648711 U CN 2011200648711U CN 201120064871 U CN201120064871 U CN 201120064871U CN 202023209 U CN202023209 U CN 202023209U
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- CN
- China
- Prior art keywords
- gear case
- hydraulic motor
- turning circle
- worm gear
- land leveller
- 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.)
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Abstract
The utility model discloses an overload protecting device for a land scraper turning circle worm-gear case, which comprises a hydraulic motor for driving the land scraper worm-gear case and an oil source for supplying oil to the hydraulic motor, wherein a hydraulic pipeline between the hydraulic motor and the oil source is provided with a hydraulic module which can prevent the passive rotation of the hydraulic motor. The overload protecting device for the land scraper turning circle worm-gear case has the advantages of simple structure, low cost, stable and reliable work and high transmission efficiency.
Description
Technical field
The utility model is mainly concerned with engineering machinery field, refers in particular to the overload protection arrangement of turning circle worm gear case on a kind of land leveller.
Background technology
At present, the rotation of land leveller turning circle generally uses worm gear case to drive.And worm gear case generally comprises two kinds of forms: worm gear case that can self-locking, i.e. self locking type worm gear case; Worm gear case that can't self-locking, promptly non-self locking type worm gear case.What generally use at present is the non-self locking type worm gear case of self locking type worm gear case and band brake.
Land leveller inevitably can meet with substantial load suddenly in operation process, at this moment can order about turning circle and rotate.When land leveller adopts the self locking type worm gear case to drive, because the auto-lock function of self locking type worm gear case, suppressed freely rotating of turning circle fully, land leveller will directly bear the percussion of big load, when local stress is excessive, the related components of land leveller will be damaged, and make the self locking type worm gear case exist locating stiffness big but can't realize the shortcoming of overload protection function; When land leveller adopts the non-self locking type worm gear case of band brake to drive, when load hour, brake will effectively suppress the rotation of turning circle, guarantee enough locating stiffnesses, when load is big, turning circle will rotate, and brake can cushion the impact of big load, but can not suppress freely rotating of turning circle fully.
The utility model content
The technical problems to be solved in the utility model is: at the technical problem that prior art exists, the utility model provide a kind of simple in structure, with low cost, working stability reliable, can improve the overload protection arrangement that is used for land leveller turning circle worm gear case of transmission efficiency greatly.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of overload protection arrangement that is used for land leveller turning circle worm gear case; comprise the hydraulic motor that drives the land leveller worm gear case and to the oil sources of described hydraulic motor fuel feeding, it is characterized in that: the fluid pressure line between described hydraulic motor and the oil sources is provided with the hydraulic package that can hinder described hydraulic motor passive rotation.
As further improvement of the utility model:
Described hydraulic package is an equalizing valve, all being communicated with oil sources by fluid pressure line and described equalizing valve into and out of hydraulic fluid port of described hydraulic motor.
Fluid pressure line between described equalizing valve and the described oil sources is provided with directional control valve.
The port of export of described oil sources is connected with fluid pressure line by oil pump and one way valve.
Compared with prior art; advantage of the present utility model is: the utility model is used for the overload protection arrangement of land leveller turning circle worm gear case by between hydraulic motor and oil sources equalizing valve being set; the connection pressure of reasonable adjustment valve; just can realize overload protection function effectively; suppress the rotation of hour turning circle of load simultaneously; guarantee enough locating stiffnesses, it is simple in structure, with low cost, working stability is reliable.Simultaneously, to the controlling of equalizing valve, can realize control by directional control valve to the hydraulic motor rotating into and out of hydraulic fluid port.
Description of drawings
Fig. 1 is a fundamental diagram of the present utility model.
Marginal data:
1, worm gear case; 2, hydraulic motor; 3, fluid pressure line; 4, equalizing valve; 5, directional control valve; 6, one way valve; 7, oil pump; 8, oil sources.
The specific embodiment
Below with reference to the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 1; the overload protection arrangement that is used for land leveller turning circle worm gear case of the present utility model; comprise the hydraulic motor 2 that drives land leveller worm gear case 1 and to the oil sources 8 of hydraulic motor 2 fuel feeding, the fluid pressure line 3 between hydraulic motor 2 and the pressure oil-source 8 is provided with the hydraulic package that can hinder hydraulic motor 2 passive rotation.In the present embodiment, worm gear case 1 is non-self locking type worm gear case, and hydraulic package adopts equalizing valve 4, and all being communicated with equalizing valve 4 into and out of hydraulic fluid port of hydraulic motor 2, equalizing valve 4 is communicated with oil sources 8.
In the present embodiment, also further be provided with directional control valve 5 on the fluid pressure line 3 between equalizing valve 4 and the oil sources 8,, and then can control the rotating of hydraulic motor 2 by controlling of 5 pairs of equalizing valves 4 of directional control valve into and out of hydraulic fluid port.The port of export of oil sources 8 is connected with fluid pressure line 3 by oil pump 7 and one way valve 6.All be interconnected between each hydraulic pressure components and parts by fluid pressure line 3.
Operating principle:
The pressure oil that oil sources 8 provides is input to equalizing valve 4 through direction control valve 5 by fluid pressure line 3, is input to the actuator port of hydraulic motor 2 again from equalizing valve 4, drives hydraulic motor 2 work.When running into big external load function; the land leveller turning circle will rotate; and impel worm gear case 1 to drive hydraulic motor 2 backward rotation, even hydraulic motor 2 passive rotation make hydraulic motor 2 change the work operating mode of pump into; at this moment; pressure oil is forced reverse flow by hydraulic motor 2, because the one way valve that is provided with in the equalizing valve 4 has the choked flow effect, can hinder the backward rotation of hydraulic motor 2; and then can hinder the rotation of land leveller turning circle, realize overload protection.In specific implementation process; connection pressure that can adjustment valve 4, and then be provided with and hinder hydraulic motor 2 counter-rotational moments, so that external applied load is carried out rational overload protection; adjustability is strong, also can avoid external applied load excessive and cause overload protective device to be damaged.
The above only is a preferred implementation of the present utility model, and protection domain of the present utility model also not only is confined to the foregoing description, and all technical schemes that belongs under the utility model thinking all belong to protection domain of the present utility model.Should propose, for those skilled in the art, in the improvements and modifications that do not break away under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. overload protection arrangement that is used for land leveller turning circle worm gear case; comprise the hydraulic motor (2) that drives land leveller worm gear case (1) and to the oil sources (8) of described hydraulic motor (2) fuel feeding, it is characterized in that: the fluid pressure line (3) between described hydraulic motor (2) and the oil sources (8) is provided with the hydraulic package that can hinder described hydraulic motor (2) passive rotation.
2. the overload protection arrangement that is used for land leveller turning circle worm gear case according to claim 1; it is characterized in that: described hydraulic package is equalizing valve (4), all being communicated with oil sources (8) by fluid pressure line (3) and described equalizing valve (4) into and out of hydraulic fluid port of described hydraulic motor (2).
3. the overload protection arrangement that is used for land leveller turning circle worm gear case according to claim 2 is characterized in that: the fluid pressure line (3) between described equalizing valve (4) and the described oil sources (8) is provided with directional control valve (5).
4. according to claim 1 or the 2 or 3 described overload protection arrangements that are used for land leveller turning circle worm gear case, it is characterized in that: the port of export of described oil sources (8) is connected with fluid pressure line (3) by oil pump (7) and one way valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200648711U CN202023209U (en) | 2011-03-14 | 2011-03-14 | Overload protecting device for land scraper turning circle worm-gear case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200648711U CN202023209U (en) | 2011-03-14 | 2011-03-14 | Overload protecting device for land scraper turning circle worm-gear case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202023209U true CN202023209U (en) | 2011-11-02 |
Family
ID=44848165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200648711U Expired - Fee Related CN202023209U (en) | 2011-03-14 | 2011-03-14 | Overload protecting device for land scraper turning circle worm-gear case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202023209U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958155A (en) * | 2017-12-14 | 2019-07-02 | 卡特彼勒公司 | System for operating the circle driving gear of machine |
| CN114508514A (en) * | 2022-01-29 | 2022-05-17 | 徐州徐工筑路机械有限公司 | Land leveler multi-rotary-motor control hydraulic system and control method thereof |
-
2011
- 2011-03-14 CN CN2011200648711U patent/CN202023209U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958155A (en) * | 2017-12-14 | 2019-07-02 | 卡特彼勒公司 | System for operating the circle driving gear of machine |
| CN114508514A (en) * | 2022-01-29 | 2022-05-17 | 徐州徐工筑路机械有限公司 | Land leveler multi-rotary-motor control hydraulic system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20180314 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |