CN215883621U - Braking system and agricultural machine - Google Patents
Braking system and agricultural machine Download PDFInfo
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- CN215883621U CN215883621U CN202121354045.0U CN202121354045U CN215883621U CN 215883621 U CN215883621 U CN 215883621U CN 202121354045 U CN202121354045 U CN 202121354045U CN 215883621 U CN215883621 U CN 215883621U
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Abstract
The utility model provides a braking system which is used for agricultural machinery and comprises an oil pump, a liquid filling valve, a hand brake valve, a foot brake valve, a front axle and a rear axle, wherein one end of the liquid filling valve is communicated with one end of the oil pump through an oil pipe, the other end of the liquid filling valve is communicated with the hand brake valve and the foot brake valve through oil pipes, and the hand brake valve and the foot brake valve are communicated with the front axle and the rear axle through oil pipes. The brake system with the structure can effectively avoid vacuum generation in the oil pipe in the braking process due to the liquid filling valve, and the braking effect is ensured. Meanwhile, the front axle and the rear axle are respectively provided with the brake, and the brakes can release the front axle and the rear axle only when sufficient pressure exists in the oil pipe, so that the safety is better. Compared with the brake system with the existing structure, the brake system has the advantages of good brake effect, better safety and the like. In addition, the utility model also provides an agricultural machine comprising the braking system.
Description
Technical Field
The utility model relates to the field of machinery, in particular to a braking system and agricultural machinery.
Background
In recent years, with the continuous development of science and technology and economy, various types of agricultural machinery, such as tractors, have been widely used in production and life in vast rural areas.
Agricultural machines include power systems, as well as brake systems, among others, where a brake system is undoubtedly one of the most important systems for any machine. On the agricultural machine of current structure, the hydraulic pressure master cylinder transmits brake fluid to braking wheel cylinder on, struts the brake shoe through the wheel cylinder, through the friction of shoe and brake drum, realizes the braking. Disadvantages and drawbacks of use include, firstly, the relatively laborious application of braking force provided by the operator. Secondly, the air in the brake pipe is difficult to exhaust, so the braking effect is relatively poor, and the driver usually steps on the brake pipe for many times. And thirdly, when the hydraulic oil circuit leaks or pipe explosion occurs, no braking force exists, and great potential safety hazard exists.
In summary, how to provide a brake system with convenient operation, good braking effect and higher safety and an agricultural machine comprising the brake system becomes a technical problem which needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the brake system is convenient to operate, good in brake effect and higher in safety, and the agricultural machine comprising the brake system is provided.
The solution of the utility model is realized by the following steps: the utility model provides a braking system which is used for agricultural machinery and comprises an oil pump, a liquid filling valve, a hand brake valve, a foot brake valve, a front axle and a rear axle, wherein one end of the liquid filling valve is communicated with one end of the oil pump through an oil pipe, the other end of the liquid filling valve is communicated with the hand brake valve and the foot brake valve through oil pipes, and the hand brake valve and the foot brake valve are communicated with the front axle and the rear axle through oil pipes. The brake system with the structure can effectively avoid vacuum generation in the oil pipe in the braking process due to the liquid filling valve, and the braking effect is ensured. Meanwhile, the front axle and the rear axle are respectively provided with the brake, and the brakes can release the front axle and the rear axle only when sufficient pressure exists in the oil pipe, so that the safety is better. Compared with the brake system with the existing structure, the brake system has the advantages of good brake effect, better safety and the like.
Another technical scheme of the utility model is that on the basis, the brake system further comprises an oil tank, and one end of the oil pump is communicated with the oil tank.
On the basis, the hand brake valve is provided with a port P, a port A and a port T, the port P is communicated with the liquid charging valve, the port A is communicated with the foot brake valve, and the port T is communicated with the oil tank.
The other technical scheme of the utility model is that on the basis, a P 'port, an A' port and a T 'port are arranged on the hand brake valve, the P' port is communicated with the A port of the hand brake valve, the A 'port is communicated with the front axle and the rear axle, and the T' port is communicated with the oil tank.
On the basis, the other technical scheme of the utility model is that the brake system further comprises a three-way valve, one end of the three-way valve is communicated with the port A' of the foot brake valve, and the other two ends of the three-way valve are respectively communicated with the front axle and the rear axle.
In another technical scheme of the utility model, on the basis of the above, the brake system further comprises an accumulator, and the accumulator is arranged on an oil pipe between the liquid charging valve and the hand brake valve.
The other technical scheme of the utility model is that on the basis of the above, the number of the energy accumulators is multiple, and the multiple energy accumulators are arranged in parallel.
On the basis, the other technical scheme of the utility model is that the brake system further comprises a filter, one end of the filter is communicated with one end of the oil pump, and the other end of the filter is communicated with the liquid charging valve.
On the basis, the braking system further comprises a plurality of pressure gauges for monitoring the pressure of the oil pipe, and the pressure gauges are arranged on the oil pipe.
In another aspect, the utility model further provides an agricultural machine, which includes a braking system, wherein the braking system is the braking system described above.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
Fig. 1 is a schematic view of a brake system according to the present invention.
The corresponding relation of the reference signs is as follows:
1 oil tank 2 oil pump 3 first pressure gauge
4 filter 5 liquid filling valve 6 second pressure gauge
7 energy storage 8 hand brake valve 9 foot brake valve
10 front axle and 11 rear axle
Detailed Description
The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.
The embodiment of the utility model is as follows, please refer to the braking system described in fig. 1, which is used for agricultural machinery, and specifically comprises an oil pump 2, a liquid filling valve 5, a hand brake valve 8, a foot brake valve 9, a front axle 10 and a rear axle 11, wherein one end, namely the lower end shown in the figure, of the liquid filling valve 5 is communicated with one end, namely the oil outlet end of the oil pump 2, of the oil pump 2 through an oil pipe, the other end, namely the upper end shown in the figure, of the liquid filling valve 5 is communicated with the hand brake valve 8 and the foot brake valve 9 through oil pipes, and the hand brake valve 8 and the foot brake valve 9 are communicated with the front axle 10 and the rear axle 11 through oil pipes, so as to realize braking. As the oil pump 2, a gear pump is preferable. According to the braking system with the structure, as the liquid filling valve 5 is used, the vacuum generated in an oil pipe can be effectively avoided in the braking process, and the braking effect is ensured. Meanwhile, the front axle 10 and the rear axle 11 are both provided with brakes, and the brakes can release the front axle 10 and the rear axle 11 only when sufficient pressure exists in the oil pipe, so that the safety is better. Compared with the brake system with the existing structure, the brake system has the advantages of good brake effect, better safety and the like.
In another embodiment of the present invention, based on the above embodiment, as shown in fig. 1, the braking system further includes an oil tank 1, the oil tank 1 is used for providing hydraulic oil for the entire braking system, one end of an oil pump 2, i.e., the lower end shown in the figure, is communicated with the oil tank 1, and the oil pump 2 is operated to send hydraulic oil from the oil tank 1 into the braking system.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1, a port P, a port a and a port T are provided on the handbrake valve 8, the port P is communicated with the liquid charging valve 5, the port a is communicated with the footbrake valve 9, and the port T is communicated with the oil tank 1.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1, a port P ', a port a' and a port T 'are provided on the handbrake valve 8, the port P' is communicated with the port a of the handbrake valve 8, the port a 'is communicated with the front axle 10 and the rear axle 11, and the port T' is communicated with the oil tank 1. For other specific structures of the hand brake valve 8 and the foot brake valve 9, reference can be made to the prior art and the modified technology thereof, and the detailed description is omitted here.
In another embodiment of the present invention, based on the above embodiment, as shown in fig. 1, the braking system further includes a three-way valve, one end of the three-way valve, i.e. the left end in the figure, is communicated with the port a' of the foot brake valve 9, and the other two ends of the three-way valve are respectively communicated with the front axle 10 and the rear axle 11, and the three-way valve is used for timely delivering the hydraulic oil from the foot brake valve 9 to the front axle 10 and the rear axle 11.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1, the braking system further includes an energy accumulator 7, and the energy accumulator 7 is disposed on the oil pipe between the liquid charging valve 5 and the hand brake valve 8, and functions to stabilize the oil pressure of the hydraulic oil in the braking system, so as to prevent the oil from being cut off, and further ensure the normal operation of each component in each braking system.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1, the number of the energy accumulators 7 is multiple, the multiple energy accumulators 7 are arranged in parallel, and the multiple energy accumulators 7 can play a mutual assisting role, so as to further ensure the normal operation of the brake system.
On the basis of the above embodiment, in another embodiment of the utility model, as shown in fig. 1, the braking system further includes a filter 4, one end, i.e., the lower end shown in the figure, of the filter 4 is communicated with one end, i.e., the upper end shown in the figure, i.e., the oil outlet end of the oil pump 2, the other end, i.e., the upper end shown in the figure, of the filter 4 is communicated with a liquid filling valve 5, and the filter 4 is used for filtering out impurities in the hydraulic oil in time, so as to prevent the impurities from entering an oil pipe or components to cause blockage, thereby causing system failure.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1, the braking system further includes a plurality of pressure gauges for monitoring the pressure of the oil pipe, specifically including a first pressure gauge 3 and a second pressure gauge 6, and the like, wherein the first pressure gauge 3 and the second pressure gauge 6 are both disposed on the oil pipe, and the plurality of pressure gauges are used for monitoring the pressure of each oil line of the entire braking system in real time, when the pressure is too high, an overflow valve in the braking system is opened in time, so that a part of the hydraulic oil flows back to the oil tank 1, and the pressure of the entire system is kept normal.
In the braking system with the structure, the front axle 10 and the rear axle 11 are respectively provided with the brake, and the brakes can be released only on the premise that the pressure provided by the hydraulic system is more than 5.5Mpa, so that the wheels can rotate. When the hand brake valve 8 is broken off, or the foot brake valve 9 is stepped on, hydraulic oil flows back to the oil tank 1 through the T port of the hand brake valve 8 and the T' port of the foot brake valve 9. At this time, the oil passages in the front axle 10 and the rear axle 11 are disconnected, and the brake internal gear is engaged, thereby stopping the vehicle. When a certain part of the hydraulic system does not work or a certain part of the hydraulic system is abnormal, such as leakage, oil pipe burst and the like, the system pressure is reduced, and insufficient pressure is provided for the front axle 10 and the rear axle 11, so that the brakes of the front axle 10 and the rear axle 11 are braked. Compared with the brake system with the existing structure, the brake system has the advantages of good brake effect, better safety and the like.
In another aspect, the utility model also includes an agricultural machine including a braking system as described above.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a braking system for agricultural machine, its characterized in that, including oil pump, prefill valve, manual brake valve, service brake valve, front axle and rear axle, the one end intercommunication of oil pipe and oil pump is passed through to the one end of prefill valve, the other end of prefill valve passes through oil pipe and manual brake valve and service brake valve intercommunication, manual brake valve and service brake valve pass through oil pipe with front axle and rear axle intercommunication.
2. The braking system of claim 1, further comprising a fuel tank, one end of the fuel pump being in communication with the fuel tank.
3. The brake system according to claim 2, wherein the hand brake valve is provided with a port P, a port A and a port T, the port P is communicated with the liquid charging valve, the port A is communicated with the foot brake valve, and the port T is communicated with the oil tank.
4. The brake system of claim 3, wherein the hand brake valve is provided with a port P ', a port A' and a port T ', the port P' is communicated with the port A of the hand brake valve, the port A is communicated with the front axle and the rear axle, and the port T is communicated with the oil tank.
5. The brake system of claim 4, further comprising a three-way valve having one end in communication with the A' port of the service brake valve and the other two ends in communication with the front axle and the rear axle, respectively.
6. A braking system according to claim 5 further comprising an accumulator provided on the oil line between the charging valve and the handbrake valve.
7. A brake system according to claim 6, wherein the number of accumulators is plural, and plural accumulators are provided in parallel.
8. The braking system of claim 7, further comprising a filter, one end of the filter being in communication with one end of the oil pump, the other end of the filter being in communication with the charge valve.
9. The braking system of claim 8, further comprising a plurality of pressure gauges for monitoring pressure in an oil line on which the pressure gauges are disposed.
10. An agricultural machine comprising a braking system, wherein the braking system is as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121354045.0U CN215883621U (en) | 2021-06-17 | 2021-06-17 | Braking system and agricultural machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121354045.0U CN215883621U (en) | 2021-06-17 | 2021-06-17 | Braking system and agricultural machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215883621U true CN215883621U (en) | 2022-02-22 |
Family
ID=80561234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121354045.0U Active CN215883621U (en) | 2021-06-17 | 2021-06-17 | Braking system and agricultural machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215883621U (en) |
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2021
- 2021-06-17 CN CN202121354045.0U patent/CN215883621U/en active Active
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