CN212441596U

CN212441596U - Hydraulic drive system of crusher and crusher using same

Info

Publication number: CN212441596U
Application number: CN202020775120.XU
Authority: CN
Inventors: 杜家欢; 杨华玉
Original assignee: Zhongshan Shredder Machinery Co ltd
Current assignee: Zhongshan Shredder Machinery Co ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-02-02
Anticipated expiration: 2030-05-11

Abstract

The utility model discloses a hydraulic drive system of breaker and use its breaker, include: an oil tank; the oil supplementing port of the hydraulic main pump is communicated with the oil tank; the main motor, the oil-out of hydraulic pressure main pump and the oil inlet intercommunication of main motor, the oil inlet of hydraulic pressure main pump and the oil return opening intercommunication of main motor to form closed oil circuit between hydraulic pressure main pump and the main motor, the main motor can be connected with outside broken axle. Therefore, the hydraulic oil circulates, and a closed oil path is formed between the hydraulic main pump and the main motor. The hydraulic oil discharged from the oil return port of the main motor is directly conveyed back to an oil inlet of the hydraulic main pump without passing through an oil tank, so that a closed system is formed, the sealing performance of an oil way is favorably improved, air infiltration or impurity mixing is avoided, the stability of the oil way during operation is improved, and the whole system is more energy-saving and efficient.

Description

Hydraulic drive system of crusher and crusher using same

Technical Field

The utility model relates to a breaker field, in particular to hydraulic drive system of breaker and use its breaker.

Background

With the development of biomass power generation technology, biomass power generation has the advantages of environmental protection and cleanness due to the use of renewable fuels, so the biomass power generation is gradually popularized and popularized. Biomass materials need to be crushed in biomass power generation, so that the development demand of the crusher is more and more strong.

Because the processed materials put into the crusher comprise a plurality of substances, the physical properties such as hardness and toughness of the substances are different, and even the substances with high hardness such as iron blocks are mixed, the load fluctuation of the driving system is large, the driving system is easy to be in an overload working state, and if a mode of directly driving by using a motor or an engine is used, the driving system is easy to be damaged. Therefore, hydraulic drive crushers are available in the market, and the hydraulic system is used for transmission, so that the overload condition of a motor or an engine is avoided, and a driving system is protected.

However, the hydraulic driving crusher in the prior art generally uses an open system, has poor sealing performance, and is easy to cause the situations of air infiltration or impurity mixing, and the like, so that the driving mechanism has the problems of unstable operation, high energy loss and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a hydraulic drive system of breaker and use its breaker, it adopts the closed oil circuit to constitute closed system, improves the leakproofness, avoids the infiltration air or sneak into the condition of impurity, improves the stability of work and more energy-conserving high-efficient.

According to the utility model discloses hydraulic drive system of breaker of first aspect embodiment includes: an oil tank; the oil supplementing port of the hydraulic main pump is communicated with the oil tank; the main motor, the oil-out of hydraulic pressure main pump with the oil inlet intercommunication of main motor, the oil inlet of hydraulic pressure main pump with the oil return opening intercommunication of main motor to make form closed oil circuit between hydraulic pressure main pump with the main motor, the main motor can be connected with outside broken axle.

According to the utility model discloses hydraulic drive system of breaker has following beneficial effect at least: the hydraulic oil is pumped out from an oil outlet of the hydraulic main pump and is transmitted to an oil inlet of the main motor, the main motor obtains kinetic energy from the hydraulic oil at the oil inlet to drive the crushing shaft to work, the used hydraulic oil is discharged and transmitted to the oil inlet of the hydraulic main pump through an oil return port of the main motor, the hydraulic main pump pressurizes the hydraulic oil at the oil inlet to increase the kinetic energy and then discharges the hydraulic oil from the oil outlet, and therefore the hydraulic oil circulates, and a closed oil way is formed between the hydraulic main pump and the main motor. The hydraulic oil discharged from the oil return port of the main motor is directly conveyed back to an oil inlet of the hydraulic main pump without passing through an oil tank, so that a closed system is formed, the sealing performance of an oil way is favorably improved, air infiltration or impurity mixing is avoided, the stability of the oil way during operation is improved, and the whole system is more energy-saving and efficient.

According to the utility model discloses a some embodiments still include the overflow valve, the oil inlet of overflow valve with closed oil circuit intercommunication, the oil-out of overflow valve with the oil tank intercommunication.

According to some embodiments of the utility model, the hydraulic pressure main pump includes two-way hydraulic pump, the main motor is two-way hydraulic motor, two-way hydraulic pump is provided with first working oil mouth and second working oil mouth, first working oil mouth with one of them conduct of second working oil mouth the oil inlet of hydraulic pressure main pump, another conduct the oil-out of hydraulic pressure main pump, first working oil mouth and second working oil mouth with the business turn over hydraulic fluid port intercommunication of main motor is in order to form the closed oil circuit.

According to the utility model discloses a some embodiments, the hydraulic pressure main pump still includes the oil supplementing pump, the oil inlet of oil supplementing pump does the oil supplementing opening of hydraulic pressure main pump with the oil tank intercommunication, the oil-out of oil supplementing pump with closed oil circuit intercommunication.

According to some embodiments of the utility model, the quantity of main motor is at least two, the main motor all with two-way hydraulic pump intercommunication, the difference the main motor can be connected with the outside broken axle of difference respectively.

According to the utility model discloses a some embodiments still include first supplementary hydraulic pump and at least one auxiliary motor, the oil inlet of first supplementary hydraulic pump with the oil tank intercommunication, the oil-out of first supplementary hydraulic pump with the oil inlet intercommunication of auxiliary motor, the oil return opening of auxiliary motor with the oil tank intercommunication.

According to some embodiments of the utility model, still include first switching-over valve, the auxiliary motor is two-way hydraulic motor, the oil-out of first supplementary hydraulic pump with the oil inlet intercommunication of first switching-over valve, the work hydraulic fluid port of first switching-over valve with the business turn over hydraulic fluid port intercommunication of auxiliary motor, the oil return opening of first switching-over valve with the oil tank intercommunication.

According to some embodiments of the utility model, still include the supplementary hydraulic pump of second, at least one pneumatic cylinder and at least one second switching-over valve, the oil inlet of the supplementary hydraulic pump of second with the oil tank intercommunication, the oil-out of the supplementary hydraulic pump of second with the oil inlet intercommunication of second switching-over valve, the working oil mouth of second switching-over valve with the business turn over hydraulic fluid port intercommunication of pneumatic cylinder, the oil return opening of second switching-over valve with the oil tank intercommunication.

According to the utility model discloses a second aspect embodiment breaker, including organism and the broken axle of setting on the organism, the organism disposes the hydraulic drive system of above-mentioned breaker, the main motor with broken axle is connected.

According to the utility model discloses breaker has following beneficial effect at least: form closed oil circuit between hydraulic pressure main pump and the main motor, hydraulic pressure main pump drive main motor drives broken axle and rotates to make broken axle carry out broken handle to the material, air infiltration or impurity sneak into can be avoided to closed oil circuit, more steady when being favorable to making broken axle rotate, it is more energy-conserving, and be favorable to improving the work efficiency of broken axle.

According to some embodiments of the utility model, still including setting up the engine on the organism, the drive end of engine with the hydraulic pressure main pump is connected.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a hydraulic system according to one embodiment of the present invention;

FIG. 2 is a schematic diagram of a main hydraulic pump and a main motor according to one embodiment of the present invention;

FIG. 3 is a schematic diagram of a first auxiliary hydraulic pump and auxiliary motor portion according to one embodiment of the present invention;

fig. 4 is a schematic diagram of a second auxiliary hydraulic pump and a hydraulic cylinder portion according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1 and 2, a hydraulic drive system of a crusher according to an embodiment of the present invention includes: a fuel tank 100; the oil supplementing port of the hydraulic main pump 200 is communicated with the oil tank 100; the main motor 300, the oil outlet of the hydraulic main pump 200 is communicated with the oil inlet of the main motor 300, and the oil inlet of the hydraulic main pump is communicated with the oil return port of the main motor 300, so that a closed oil path is formed between the hydraulic main pump 200 and the main motor 300, and the main motor 300 can be connected with an external crushing shaft.

The hydraulic oil is pumped out from an oil outlet of the hydraulic main pump 200 and is transmitted to an oil inlet of the main motor 300, the main motor 300 obtains kinetic energy from the hydraulic oil at the oil inlet to drive the crushing shaft to work, an oil return port of the main motor 300 discharges the used hydraulic oil and transmits the hydraulic oil to the oil inlet of the hydraulic main pump 200, the hydraulic main pump 200 pressurizes the hydraulic oil at the oil inlet to increase the kinetic energy and then discharges the hydraulic oil from the oil outlet, and therefore the hydraulic oil circulates, and a closed oil path is formed between the hydraulic main pump 200 and the main motor 300. The hydraulic oil discharged from the oil return port of the main motor 300 is directly returned to the oil inlet of the hydraulic main pump 200 without passing through the oil tank 100, so that a closed system is formed, the sealing performance of the oil way is improved, air infiltration or impurity mixing is avoided, the working stability of the oil way is improved, and the whole system is more energy-saving and efficient.

Referring to fig. 1 and 2, in some embodiments of the present invention, the present invention further includes an overflow valve 400, an oil inlet of the overflow valve 400 is communicated with the closed oil path, and an oil outlet of the overflow valve 400 is communicated with the oil tank 100.

The hydraulic main pump 200 drives the main motor 300 to drive the crushing shaft to rotate, when the crushing shaft is used for processing the conditions of excessive materials or mixing the materials with high hardness, the load of the crushing shaft is increased to increase the rotating resistance of the main motor 300, so that the oil pressure in the closed oil way is increased, the load of the hydraulic main pump 200 is increased, and the condition that the overload damage driving mechanism possibly occurs is caused. Therefore, through overflow valve 400 and closed oil circuit intercommunication, because overflow valve 400 can switch on when the oil pressure is greater than the threshold value to this oil pressure upper limit of restriction closed oil circuit, and then the maximum load of restriction hydraulic pressure main pump 200 avoids appearing the overload condition, and the protection actuating mechanism avoids the condition of breaking down and damaging, improves the reliability. The relief valve 400 may be plural in number.

Referring to fig. 1 and 2, in some embodiments of the present invention, the hydraulic main pump 200 includes a bidirectional hydraulic pump 210, the main motor 300 is a bidirectional hydraulic motor, the bidirectional hydraulic pump 210 is provided with a first working oil port and a second working oil port, the first working oil port and the second working oil port are one of them as an oil inlet of the hydraulic main pump, the other is an oil outlet of the hydraulic main pump, and the first working oil port and the second working oil port are communicated with an oil inlet and an oil outlet of the main motor 300 to form a closed oil path.

Because when carrying out crushing treatment to the material, the too much condition such as the crushing axle resistance of rotation that leads to of material excessively or can not rotate can appear and take place, to this problem, changes the flow direction of hydraulic oil in the closed oil circuit through two-way hydraulic pump 210, and then orders about main motor 300 reversal, makes crushing axle can through the reversal uninstallation material, makes the material scatter simultaneously, and the load reduces when letting next crushing axle handle, is favorable to protecting crushing axle to avoid receiving the damage.

The first working oil port and the second working oil port of the bidirectional hydraulic pump 210 are different according to the transmission direction of the hydraulic oil, one of the first working oil port and the second working oil port receives the hydraulic oil as an oil inlet, and the other discharges the hydraulic oil as an oil outlet. Similarly, the bidirectional hydraulic motor is provided with two oil inlets and outlets, one of the two oil inlets and outlets receives hydraulic oil as an oil inlet, the other oil inlet and outlet discharges hydraulic oil as an oil return port, and the functions of the two oil inlets and outlets are mutually converted so that the bidirectional hydraulic motor can rotate forwards or backwards. The first working oil port and the second working oil port are communicated with the two oil inlet and outlet ports in a one-to-one correspondence manner, so that a closed oil path is formed between the double-pressure hydraulic pump 210 and the bidirectional hydraulic motor.

In some embodiments, the hydraulic main pump 200 may also be an embodiment including a one-way pump, in which case the main motor 300 is a one-way hydraulic motor, an oil inlet of the one-way pump is communicated with an oil return port of the one-way hydraulic motor, and an oil outlet of the one-way pump is communicated with an oil inlet of the one-way hydraulic motor, so as to form a closed oil path.

Referring to fig. 1 and 2, in some embodiments of the present invention, the hydraulic main pump 200 further includes an oil supply pump 220, an oil inlet of the oil supply pump 220 is communicated with the oil tank 100 as an oil supply port of the hydraulic main pump 200, and an oil outlet of the oil supply pump 220 is communicated with the closed oil path.

For safe operation, the main motor 300 is generally provided with an oil drain port communicated with the oil tank 100 to prevent the internal oil pressure of the main motor 300 from being too high, and when the main motor 300 operates, a small part of hydraulic oil leaks from the working oil path and flows to the oil tank 100 through the oil drain port. In contrast, in order to supplement the hydraulic oil with reduced leakage, the hydraulic oil is pumped from the oil tank 100 by the oil supply pump 220 and is input into the closed oil path, so as to maintain normal oil pressure in the closed oil path, which is beneficial to maintaining normal operation of the bidirectional hydraulic pump 210 and the main motor 300, and improving reliability.

Referring to fig. 1 and 2, in some embodiments of the present invention, the number of main motors 300 is at least two, the main motors 300 are all in communication with the bidirectional hydraulic pump 210, and different main motors 300 can be respectively connected with different external crushing shafts.

Since the crusher may be provided with two or more crushing shafts, the main motors 300 are connected to the crushing shafts in a one-to-one correspondence, and the two or more main motors 300 are driven by a single bidirectional hydraulic pump 210 so that the working oil pressures between the main motors 300 are equalized, thereby enabling the synchronous operation of the two or more crushing shafts.

Referring to fig. 1 and 3, in some embodiments of the present invention, the hydraulic pump further includes a first auxiliary hydraulic pump 500 and at least one auxiliary motor 510, an oil inlet of the first auxiliary hydraulic pump 500 is communicated with the oil tank 100, an oil outlet of the first auxiliary hydraulic pump 500 is communicated with an oil inlet of the auxiliary motor 510, and an oil return port of the auxiliary motor 510 is communicated with the oil tank 100.

Because the breaker is including the transmission band, parts such as de-ironing separator need provide power and work in addition to broken axle, consequently drives at least one auxiliary motor 510 work through being provided with first auxiliary hydraulic pump 500, and auxiliary motor 510 can be connected in order to drive it and carry out work with parts such as outside transmission band or de-ironing separator.

The first auxiliary hydraulic pump 500 is preferably a plunger pump, which has the advantages of high working pressure, good self-sealing performance, and convenience in flow regulation. An auxiliary overflow valve may be provided between the first auxiliary hydraulic pump 500 and the auxiliary motor 510 to avoid an overload condition.

Referring to fig. 1 and 3, in some embodiments of the present invention, the hydraulic pump further includes a first direction valve 520, the auxiliary motor 510 is a bidirectional hydraulic motor, an oil outlet of the first auxiliary hydraulic pump 500 is communicated with an oil inlet of the first direction valve 520, a working oil port of the first direction valve 520 is communicated with an oil inlet and an oil outlet of the auxiliary motor 510, and an oil return port of the first direction valve 520 is communicated with the oil tank 100.

The first reversing valve 520 is at least provided with two working oil ports, the two-way hydraulic motor is provided with two oil inlet and outlet ports, the working oil ports are connected with the oil inlet and outlet ports in a one-to-one correspondence manner, and the first reversing valve 520 can change the communication relation between the oil inlet and the oil outlet and the working oil ports, so that after the hydraulic oil output by the first auxiliary hydraulic pump 500 flows to the oil inlet of the first reversing valve 520, the hydraulic oil flows to different working oil ports by controlling the state of the first reversing valve 520, and then the auxiliary motor 510 is controlled, namely, the two-way hydraulic motor rotates forwards, rotates backwards or stops rotating. Therefore, various driving modes of the auxiliary motor 510 to external devices are realized, and more various use requirements are favorably met. The first direction valve 520 may be controlled electrically or manually to change the operating state of the first direction valve 520.

Referring to fig. 1 and 4, in some embodiments of the present invention, the hydraulic pump further includes a second auxiliary hydraulic pump 600, at least one hydraulic cylinder 610 and at least one second direction valve 620, an oil inlet of the second auxiliary hydraulic pump 600 is communicated with the oil tank 100, an oil outlet of the second auxiliary hydraulic pump 600 is communicated with an oil inlet of the second direction valve 620, a working oil port of the second direction valve 620 is communicated with an oil inlet and an oil outlet of the hydraulic cylinder 610, and an oil return port of the second direction valve 620 is communicated with the oil tank 100.

Because the breaker generally needs to promote or stir the material to make the material more even, load is littleer, more even when making broken axle carry out crushing treatment. Therefore, by providing the second auxiliary hydraulic pump 600 to drive the hydraulic cylinder 610 to operate, the hydraulic cylinder 610 can be connected to the pushing mechanism or the stirring mechanism to drive the pushing mechanism or the stirring mechanism to work, thereby pushing or stirring the material. The second directional control valve 620 can control and change the flow direction of the hydraulic oil to the hydraulic cylinder 610, so as to control the hydraulic cylinder 610 to perform telescopic action. The second direction valve 620 may be controlled electronically or manually to change the operating state of the second direction valve 620.

The second auxiliary hydraulic pump 600 is preferably a gear pump, which has the advantages of compact structure, large rotating speed range, small volume, etc. An auxiliary overflow valve may be provided between the second auxiliary hydraulic pump 600 and the hydraulic cylinder 610 to avoid an overload situation.

According to the utility model discloses a breaker of second aspect embodiment, including the organism and set up the broken axle on the organism, the organism disposes the hydraulic drive system of the breaker in the above-mentioned content, and main motor 300 communicates with broken axle.

Form the closed oil circuit between hydraulic pressure main pump 200 and the main motor 300, hydraulic pressure main pump 200 drive main motor 300 drives broken axle and rotates to make broken axle carry out broken handle to the material, the air infiltration or impurity sneak into can be avoided to the closed oil circuit, more steadily, more energy-conservation when being favorable to making broken axle rotate, and be favorable to improving the work efficiency of broken axle.

In some embodiments of the present invention, the hydraulic pump further comprises an engine disposed on the machine body, and the driving end of the engine is communicated with the hydraulic main pump 200.

The engine drives the hydraulic main pump 200, and the hydraulic main pump 200 drives hydraulic oil to flow to form oil pressure, so as to drive the main motor 300 to work. The mode of using the engine need not to connect outside power supply line, is favorable to improving the mobility of breaker, can remove the use in the open air, makes the use more convenient.

In some embodiments, the drive shaft of the engine is connected with the bidirectional hydraulic pump 210 and the oil replenishment pump 220 in the hydraulic main pump 200, so that the engine can drive the bidirectional hydraulic pump 210 and the oil replenishment pump 220 at the same time. The engine is preferably a diesel engine which has the advantages of high thermal efficiency and good economical efficiency.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims

1. A hydraulic drive system for a crusher, comprising:

a fuel tank (100);

the oil supplementing port of the hydraulic main pump (200) is communicated with the oil tank (100);

the oil outlet of the hydraulic main pump (200) is communicated with the oil inlet of the main motor (300), the oil inlet of the hydraulic main pump (200) is communicated with the oil return port of the main motor (300), so that a closed oil way is formed between the hydraulic main pump (200) and the main motor (300), and the main motor (300) can be connected with an external crushing shaft.

2. A hydraulic drive system for a crusher as claimed in claim 1, wherein: the oil inlet of the overflow valve (400) is communicated with the closed oil way, and the oil outlet of the overflow valve (400) is communicated with the oil tank (100).

3. A hydraulic drive system for a crusher as claimed in claim 1, wherein: the hydraulic main pump (200) comprises a bidirectional hydraulic pump (210), the main motor (300) is a bidirectional hydraulic motor, the bidirectional hydraulic pump (210) is provided with a first working oil port and a second working oil port, one of the first working oil port and the second working oil port serves as an oil inlet of the hydraulic main pump, the other one of the first working oil port and the second working oil port serves as an oil outlet of the hydraulic main pump, and the first working oil port and the second working oil port are communicated with an oil inlet and an oil outlet of the main motor (300) to form the closed oil way.

4. A hydraulic drive system for a crusher as claimed in claim 3, wherein: the hydraulic main pump (200) further comprises an oil supplementing pump (220), an oil inlet of the oil supplementing pump (220) serves as an oil supplementing port of the hydraulic main pump (200) and is communicated with the oil tank (100), and an oil outlet of the oil supplementing pump (220) is communicated with the closed oil way.

5. A hydraulic drive system for a crusher as claimed in claim 3, wherein: the number of the main motors (300) is at least two, the main motors (300) are communicated with the bidirectional hydraulic pump (210), and different main motors (300) can be connected with different external crushing shafts respectively.

6. A hydraulic drive system for a crusher as claimed in claim 1, wherein: still include first auxiliary hydraulic pump (500) and at least one auxiliary motor (510), the oil inlet of first auxiliary hydraulic pump (500) with oil tank (100) intercommunication, the oil-out of first auxiliary hydraulic pump (500) with the oil inlet intercommunication of auxiliary motor (510), the oil return opening of auxiliary motor (510) with oil tank (100) intercommunication.

7. A hydraulic drive system for a crusher as claimed in claim 6, wherein: the hydraulic control system is characterized by further comprising a first reversing valve (520), the auxiliary motor (510) is a bidirectional hydraulic motor, an oil outlet of the first auxiliary hydraulic pump (500) is communicated with an oil inlet of the first reversing valve (520), a working oil port of the first reversing valve (520) is communicated with an oil inlet and an oil outlet of the auxiliary motor (510), and an oil return port of the first reversing valve (520) is communicated with the oil tank (100).

8. A hydraulic drive system for a crusher as claimed in claim 1, wherein: still include second auxiliary hydraulic pump (600), at least one pneumatic cylinder (610) and at least one second switching-over valve (620), the oil inlet of second auxiliary hydraulic pump (600) with oil tank (100) intercommunication, the oil-out of second auxiliary hydraulic pump (600) with the oil inlet intercommunication of second switching-over valve (620), the work hydraulic fluid port of second switching-over valve (620) with the business turn over hydraulic fluid port intercommunication of pneumatic cylinder (610), the oil return opening of second switching-over valve (620) with oil tank (100) intercommunication.

9. The breaker, its characterized in that: comprising a machine body provided with a hydraulic drive system of a crusher according to any one of claims 1-8, and a crushing shaft arranged on the machine body, the main motor (300) being connected to the crushing shaft.

10. The crusher of claim 9, wherein: the hydraulic control system further comprises an engine arranged on the machine body, and the driving end of the engine is connected with the hydraulic main pump (200).