Search

CN-224214677-U - Chain lubricating and hydraulic motor oil drainage linkage control system

CN224214677UCN 224214677 UCN224214677 UCN 224214677UCN-224214677-U

Abstract

The utility model provides a chain lubricating and hydraulic motor oil drainage linkage control system, which relates to the technical field of excavator hydraulic systems, and comprises a hydraulic motor, a piston cylinder, a lubricating oil tank, a first one-way valve and a third one-way valve; one end of the first oil way is communicated with a first cavity of the piston cylinder, the other end of the first oil way is communicated with an oil return port of the hydraulic motor, one end of the first oil way is communicated with a second cavity of the piston cylinder, the other end of the first oil way is communicated with an inlet of the lubricating oil tank, one end of the lubricating oil way is communicated with an outlet of the lubricating oil tank, the other end of the lubricating oil way is provided with a chain lubricating oil outlet for discharging lubricating oil in the lubricating oil tank out of a lubricating chain through the lubricating oil way, one end of the first oil drain way is communicated with an oil drain port of the hydraulic motor, the other end of the first oil drain way is communicated with an oil outlet of a hydraulic control one-way valve, and hydraulic oil in a shell of the hydraulic motor is used for being drained into the lubricating oil way from the first oil drain way. The utility model can switchably lubricate the chain through constant pressure oil discharge of the lubricating oil tank or oil discharge in the hydraulic motor shell when the chain rotates.

Inventors

  • Request for anonymity
  • Request for anonymity
  • Request for anonymity

Assignees

  • 天津骐讯科技有限公司

Dates

Publication Date
20260508
Application Date
20250623

Claims (12)

  1. 1. The chain lubricating and hydraulic motor oil drainage linkage control system is characterized by comprising a hydraulic motor, a first oil way, a piston cylinder, a first passage, a lubricating oil tank, a lubricating oil way, an air suction passage, a second back pressure one-way valve, a hydraulic control one-way valve, a control oil way, a first oil drainage oil way, a first one-way valve and a third one-way valve; The hydraulic motor is used for driving the chain to rotate; One end of the first oil way is communicated with the first cavity of the piston cylinder, and the other end of the first oil way is communicated with an oil return port of the hydraulic motor and is used for supplying hydraulic oil from the first oil way to the first cavity of the piston cylinder or discharging hydraulic oil in the first cavity of the piston cylinder; one end of the first passage is communicated with the second cavity of the piston cylinder, and the other end of the first passage is communicated with an inlet of the lubricating oil tank and is used for discharging gas in the second cavity of the piston cylinder and supplying gas into the lubricating oil tank; One end of the lubricating oil way is communicated with the outlet of the lubricating oil tank, the other end of the lubricating oil way is provided with a chain lubricating oil outlet, the chain lubricating oil outlet is arranged above the chain, and lubricating oil in the lubricating oil tank is discharged from the chain lubricating oil outlet through the lubricating oil way and flows to the chain to lubricate the chain; One end of the air suction passage is communicated with the second cavity of the piston cylinder, and the other end of the air suction passage is communicated with the atmosphere and is used for sucking air into the second cavity of the piston cylinder; The air suction passage is provided with a second back pressure one-way valve, an inlet of the second back pressure one-way valve is communicated with the other end of the air suction passage, and an outlet of the second back pressure one-way valve is communicated with a second cavity of the piston cylinder and is used for enabling air to flow unidirectionally from the air suction passage to the second cavity of the piston cylinder so as to prevent the air from being discharged from the air suction passage; The hydraulic control one-way valve is arranged on the lubricating oil path, an oil outlet of the hydraulic control one-way valve is communicated with an outlet of the lubricating oil tank, an oil inlet of the hydraulic control one-way valve is communicated with a chain lubricating oil outlet, a control oil port of the hydraulic control one-way valve is communicated with the first oil path through the control oil path and is used for controlling on-off of the lubricating oil path through the hydraulic control one-way valve, an oil outlet of the hydraulic control one-way valve is communicated with the oil inlet when hydraulic oil positively flows in the first oil path, lubricating oil is discharged from the chain lubricating oil outlet through the lubricating oil path, and lubricating oil cannot flow through the hydraulic control one-way valve when hydraulic oil reversely flows or does not flow in the first oil path; One end of the first oil drain way is communicated with an oil drain port of the hydraulic motor, the other end of the first oil drain way is communicated with an oil outlet of the hydraulic control one-way valve, hydraulic oil in the hydraulic motor shell is drained into the lubricating oil way from the first oil drain way, is drained from the chain lubricating oil outlet through the lubricating oil way, and flows to a chain to lubricate the chain; The first one-way valve is arranged on the first oil drain path, an oil inlet of the first one-way valve is communicated with an oil drain port of the hydraulic motor, and an oil outlet of the first one-way valve is communicated with an oil outlet of the hydraulic control one-way valve and is used for preventing lubricating oil from reversely flowing into the hydraulic motor from the first oil drain path when the lubricating oil tank is drained; The third one-way valve is arranged on the lubricating oil path, an oil inlet of the third one-way valve is communicated with an outlet of the lubricating oil tank, and an oil outlet of the third one-way valve is communicated with an oil outlet of the hydraulic one-way valve and used for preventing hydraulic oil from reversely flowing into the lubricating oil tank from the lubricating oil path when the hydraulic motor shell discharges oil.
  2. 2. The chain lubrication and hydraulic motor drainage linkage control system of claim 1, further comprising a second drainage oil path and a second one-way valve; one end of the second oil drain oil way is communicated with an oil drain port of the hydraulic motor, and the other end of the second oil drain oil way is communicated with the first oil way, so that hydraulic oil in the hydraulic motor shell is drained from the first oil way through the second oil drain oil way at the moment that the hydraulic motor stops rotating; The second one-way valve is arranged on the second oil drain path, an oil inlet of the second one-way valve is communicated with an oil drain port of the hydraulic motor, and an oil outlet of the second one-way valve is communicated with the first oil path and is used for preventing hydraulic oil from reversely flowing into the hydraulic motor from the second oil drain path when hydraulic oil is supplied to the first cavity of the piston cylinder or discharged from the first cavity of the piston cylinder.
  3. 3. The chain lubrication and hydraulic motor drainage linkage control system according to claim 1, further comprising a first stop valve, wherein the first stop valve is disposed on the first drainage path, and is configured to adjust on-off of the first drainage path.
  4. 4. The chain lubrication and hydraulic motor drainage linkage control system according to claim 3, wherein the first one-way valve is not arranged on the first drainage path, and the first stop valve is arranged between an oil drainage port of the hydraulic motor and an oil outlet of the hydraulic control one-way valve.
  5. 5. The chain lubrication and hydraulic motor oil drainage linkage control system according to claim 2, further comprising a second stop valve, wherein the second stop valve is disposed on the first oil path and is used for adjusting on-off of the first oil path.
  6. 6. The chain lubrication and hydraulic motor drain linkage control system according to claim 5, wherein the second shut-off valve is disposed between the first chamber of the piston cylinder and the other end of the second drain oil passage.
  7. 7. The chain lubricating and hydraulic motor oil drainage linkage control system according to claim 1, wherein a pressure reducing valve is arranged on the first passage, an inlet of the pressure reducing valve is communicated with the second cavity of the piston cylinder, an outlet of the pressure reducing valve is communicated with an inlet of the lubricating oil tank, and the pressure of gas is reduced to a set pressure after the gas positively flows through the pressure reducing valve, so that the pressure of the gas in the lubricating oil tank is controlled to be maintained at the set pressure.
  8. 8. The chain lubrication and hydraulic motor drainage linkage control system according to claim 7, wherein a fourth one-way valve is provided on the first passage, the fourth one-way valve being provided between the pressure reducing valve and the lubrication tank, an inlet of the fourth one-way valve being in communication with an outlet of the pressure reducing valve, an outlet of the fourth one-way valve being in communication with an inlet of the lubrication tank for one-way flow of gas from the first passage into the lubrication tank, preventing flow of gas and/or lubrication oil from the first passage into the second chamber of the piston cylinder.
  9. 9. The chain lubrication and hydraulic motor drainage linkage control system of claim 8, further comprising an overflow path and a safety overflow valve; One end of the overflow passage is communicated with the first passage and is connected between the pressure reducing valve and the lubricating oil tank; The air inlet of the safety relief valve is connected with the other end of the relief passage, and is used for enabling air to overflow from the air outlet of the safety relief valve through the relief passage when the outlet pressure of the pressure reducing valve exceeds the maximum air pressure bearable by the lubricating oil tank.
  10. 10. The chain lubrication and hydraulic motor drain linkage control system according to claim 9, wherein the relief valve is not provided in the first passage, and the relief valve is configured to control the gas pressure in the lubrication tank to be maintained at a set pressure by allowing gas to escape from the gas outlet of the relief valve through the relief passage when the gas pressure in the lubrication tank exceeds the set pressure.
  11. 11. The chain lubricating and hydraulic motor oil drainage linkage control system according to claim 1, wherein a third back pressure check valve is arranged on the first passage, an inlet of the third back pressure check valve is communicated with the second cavity of the piston cylinder, an outlet of the third back pressure check valve is communicated with an inlet of the lubricating oil tank, and gas in the second cavity of the piston cylinder is used for supplying gas to the lubricating oil tank in a unidirectional mode.
  12. 12. The chain lubricating and hydraulic motor oil drainage linkage control system according to claim 1, wherein a fourth one-way valve is arranged on the first passage, an inlet of the fourth one-way valve is communicated with the second cavity of the piston cylinder, an outlet of the fourth one-way valve is communicated with an inlet of the lubricating oil tank, and gas in the second cavity of the piston cylinder is used for supplying gas to the lubricating oil tank in a one-way mode.

Description

Chain lubricating and hydraulic motor oil drainage linkage control system Technical Field The utility model relates to the technical field of excavator hydraulic systems, in particular to a chain lubricating and hydraulic motor oil drainage linkage control system. Background Currently, an excavator generally transmits power through a hydraulic system to control an excavator head replacement device to complete various actions. The excavator hydraulic system is a combination body which organically connects various hydraulic elements by pipelines according to the excavator head replacement device and the transmission requirements of various mechanisms. The hydraulic motor is an executive component of the hydraulic system of the excavator, and is used for converting the pressure energy of hydraulic oil in the hydraulic system into mechanical energy and driving a chain of the excavator head replacement device to rotate, so that the excavator head replacement device is driven by the chain to execute various actions. The chain is used as a main transmission part of the excavator head replacement device, and the situation of abrasion or rust can not be avoided when the excavator head replacement device is frequently used. Therefore, in order to avoid the conditions of blocking, blocking and even breaking of the chain in the rotation process, the oil is generally moistened to the chain while the chain rotates, so that the normal rotation of the chain is ensured. In the prior art, the chain lubricating oil generally utilizes hydraulic oil in a hydraulic motor shell to lubricate a chain, when the hydraulic motor drives the chain to rotate, the hydraulic oil in the hydraulic motor shell is led out from an oil drainage port of the hydraulic motor, and the leaked hydraulic oil is led to the chain to flow out through a hydraulic pipeline, so that the chain is lubricated. However, this way, hydraulic oil of the hydraulic system of the excavator is continuously consumed, and excessive consumption of hydraulic oil can cause the system to fail to operate normally, and the cost of the hydraulic oil is high, so that the hydraulic oil is not suitable for wasting excessive hydraulic oil to lubricate the chain. Disclosure of utility model The utility model aims to provide a chain oiling and hydraulic motor oil drainage linkage control system which is used for solving at least one technical problem in the prior art. The chain lubricating and hydraulic motor oil drainage linkage control system comprises a hydraulic motor, a first oil way, a piston cylinder, a first passage, a lubricating oil tank, a lubricating oil way, an air suction passage, a second back pressure check valve, a hydraulic control check valve, a control oil way, a first oil drainage oil way, a first check valve and a third check valve; The hydraulic motor is used for driving the chain to rotate; One end of the first oil way is communicated with the first cavity of the piston cylinder, and the other end of the first oil way is communicated with an oil return port of the hydraulic motor and is used for supplying hydraulic oil from the first oil way to the first cavity of the piston cylinder or discharging hydraulic oil in the first cavity of the piston cylinder; one end of the first passage is communicated with the second cavity of the piston cylinder, and the other end of the first passage is communicated with an inlet of the lubricating oil tank and is used for discharging gas in the second cavity of the piston cylinder and supplying gas into the lubricating oil tank; One end of the lubricating oil way is communicated with the outlet of the lubricating oil tank, the other end of the lubricating oil way is provided with a chain lubricating oil outlet, the chain lubricating oil outlet is arranged above the chain, and lubricating oil in the lubricating oil tank is discharged from the chain lubricating oil outlet through the lubricating oil way and flows to the chain to lubricate the chain; The lubricating oil can be engine oil or waste hydraulic oil, so that the cost is low; One end of the air suction passage is communicated with the second cavity of the piston cylinder, and the other end of the air suction passage is communicated with the atmosphere and is used for sucking air into the second cavity of the piston cylinder; The air suction passage is provided with a second back pressure one-way valve, an inlet of the second back pressure one-way valve is communicated with the other end of the air suction passage, and an outlet of the second back pressure one-way valve is communicated with a second cavity of the piston cylinder and is used for enabling air to flow unidirectionally from the air suction passage to the second cavity of the piston cylinder so as to prevent the air from being discharged from the air suction passage; The hydraulic control one-way valve is arranged on the lubricating oil path, an oil outlet of the hydraulic control one-way valve is communicat