Automatic compensation type cutting mechanism of lubricating oil and tunneling machine

Abstract

The application discloses a kind of lubricating oil automatic compensation type cutting mechanism and heading machine, belong to heading machine technical field, lubricating oil automatic compensation type cutting mechanism includes motor box, cutting motor is provided in motor box, cutting motor box front end is equipped with cutting speed reducer, cutting speed reducer is connected with the rear end of cutting arm, cutting arm front end is connected with cutting head, cutting motor is rotated by cutting speed reducer and drives cutting head, cutting arm is communicated with lubricating oil compensation device, and lubricating oil compensation device is used to make cutting arm in lubricating oil automatic replenishment, and keep pressure stable.The application can make cutting mechanism front end also be lubricated fully when lifting work, with the function of lubricating oil automatic replenishment, lubricating oil cavity protection and oil cavity pressure constant, effectively avoid the failure caused by insufficient lubrication, oil-water mixing.

Description

Technical Field

[0001] This invention relates to an automatic lubricating oil compensation type cutting mechanism and a tunneling machine, belonging to the field of tunneling machine technology. Background Technology

[0002] Currently, automated equipment, represented by tunneling machines, is widely used in the coal mining industry. The cutting mechanism is the working device of the tunneling machine, and its maintenance and inspection rely on manual on-site observation, which can lead to untimely lubrication. First, to prevent lubricating oil from overflowing from the pressure venting device in the oil chamber, conventional tunneling machines only fill the oil chamber to about half its capacity. When cutting upper rock strata, the cutting mechanism needs to be lifted upwards, causing lubricating oil to accumulate at the rear of the cutting arm. This prevents the front seals and bearings from being lubricated and cooled, leading to dry running failure. Secondly, tunneling machines are equipped with an internal spray system for dust suppression. In actual use, water from the internal spray can easily leak into the cutting arm's lubrication chamber, causing oil-water mixing, which is only discovered when equipment malfunctions. Finally, the lubrication chamber is located inside the cutting arm, making it difficult to check the quality of the lubricating oil. Impurities entering the lubricating oil or failure to change it regularly can result in poor oil quality, thus affecting the service life of the cutting mechanism. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a cutting mechanism and tunneling machine with automatic lubrication compensation, which can ensure that the front end of the cutting mechanism is fully lubricated during lifting operations, and has the functions of automatic lubrication replenishment, lubrication chamber protection and constant oil chamber pressure, effectively avoiding failures caused by insufficient lubrication and oil-water mixing; furthermore, the present invention provides a cutting mechanism and tunneling machine with automatic lubrication compensation and online oil quality monitoring function, which can effectively avoid failures caused by poor oil quality and improve the service life and reliability of the cutting mechanism.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] In a first aspect, the present invention discloses a lubricating oil automatic compensation type cutting mechanism, including a motor housing, a cutting motor disposed inside the motor housing, a cutting reducer installed at the front end of the motor housing, the cutting reducer being connected to the rear end of a cutting arm, the front end of the cutting arm being connected to a cutting head, the cutting motor driving the cutting head to rotate through the cutting reducer, the cutting arm being connected to a lubricating oil compensation device, the lubricating oil compensation device being used to keep the lubricating oil pressure in the cutting arm stable.

[0006] The lubricating oil compensation device is connected to the oil detection device, and the lubricating oil compensation device and the oil detection device are integrated on the tunneling machine operating platform.

[0007] The cutting arm includes a main shaft, which is mounted inside the outer cylinder via a front bearing and a rear bearing. A floating oil seal seat is mounted on the main shaft, and a floating oil seal frame is mounted on the front end of the outer cylinder. A floating oil seal is installed between the floating oil seal seat and the floating oil seal frame. An oil seal that contacts the main shaft is mounted on the rear end of the outer cylinder. The front bearing and the rear bearing are located between the floating oil seal and the oil seal. A lubricating oil cavity is formed between the main shaft, the outer cylinder, the floating oil seal, and the oil seal. An oil replenishment channel and an oil drain channel are provided on the outer cylinder, which communicate with the lubricating oil cavity. The oil replenishment channel and the oil drain channel are connected to the lubricating oil compensation device.

[0008] The rear end of the spindle is connected to the output shaft of the cutting reducer, and the front end is connected to the cutting head.

[0009] The lubricating oil compensation device includes an oil reservoir connected to a pump driven by a motor. The pump is connected to the oil replenishment pipeline via an oil replenishment actuator and to the oil return pipeline via a return oil actuator. A pressure sensor is installed at the outlet of the oil replenishment actuator. The pressure sensor is electrically connected to the signal input terminal of the controller. The signal output terminal of the controller is electrically connected to the motor, the oil replenishment actuator, and the return oil actuator.

[0010] The oil tank is equipped with an oil level indicator.

[0011] The lubricating oil compensation device is one of the following: mechanical hydraulic automatic compensation, electro-hydraulic automatic compensation, and volumetric automatic compensation.

[0012] The oil testing device is equipped with a viscometer, a moisture analyzer, and a particle counter.

[0013] The operating platform is equipped with a display panel, which is electrically connected to the oil testing device.

[0014] Secondly, the present invention discloses a tunneling machine equipped with the aforementioned automatic lubricating oil compensation type cutting mechanism.

[0015] The beneficial effects of this invention are as follows: This invention provides a cutting mechanism and tunneling machine with automatic lubricant compensation. By setting up a lubricant compensation device, the lubricant in the cutting arm is automatically replenished, eliminating the need for manual lubrication. This maintains a stable and adjustable pressure in the lubricant in the cutting arm, eliminating the need for a pressure venting device. This ensures that the lubricant fills the oil chamber completely, guaranteeing sufficient lubrication at the front end of the cutting mechanism during lifting operations, while also protecting the seals of the lubricant chamber. Furthermore, maintaining a certain pressure in the internal lubricant of the cutting arm prevents water from the internal spray from leaking into the lubricant chamber and causing oil-water mixing. Finally, an oil quality detection device is included to sample and analyze the lubricant, preventing malfunctions caused by poor oil quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the cutting mechanism and tunneling machine structure provided in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the lubrication oil cavity structure of the cutting arm provided in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the lubricating oil compensation device provided in an embodiment of the present invention;

[0019] The following labels are used in the attached diagram: 1-Cutting head; 2-Cutting arm; 3-Cutting reducer; 4-Cutting motor; 5-Motor housing; 6-Lubricating oil compensation device; 7-Oil detection device; 8-Operating table; 9-Outer cylinder; 10-Main shaft; 11-Floating oil seal seat; 12-Floating oil seal; 13-Floating oil seal frame; 14-Front end bearing; 15-Rear end bearing; 16-Oil seal; 17-Replenishment channel; 18-Drainage channel; 19-Lubricating oil chamber; 20-Oil reservoir; 21-Motor; 22-Pump; 23-Replenishment actuator; 24-Pressure sensor; 25-Controller; 26-Return actuator; 27-Replenishment pipeline; 28-Return pipeline; 29-Oil level indicator. Detailed Implementation

[0020] Example 1

[0021] like Figure 1 As shown, the present invention discloses an automatic lubricating oil compensation type cutting mechanism, including a motor housing 5, a cutting motor 4 disposed inside the motor housing 5, a cutting reducer 3 installed at the front end of the motor housing 5, the cutting reducer 3 being connected to the rear end of the cutting arm 2, the front end of the cutting arm 2 being connected to the cutting head 1, the cutting motor 4 driving the cutting head 1 to rotate through the cutting reducer 3, the cutting arm 2 being connected to a lubricating oil compensation device 6, the lubricating oil compensation device 6 being used to keep the lubricating oil pressure in the cutting arm 2 stable.

[0022] This invention maintains a stable and adjustable lubricating oil pressure in the cutting arm by incorporating a lubricating oil compensation device. This ensures that the lubricating oil fills the oil chamber completely, guaranteeing adequate lubrication of the cutting mechanism's front end during lifting operations, while also protecting the sealing components of the lubricating oil chamber. Furthermore, maintaining a certain pressure within the cutting arm's internal lubricating oil prevents water from the internal spray from leaking into the lubricating oil chamber and causing oil-water mixing. In summary, this invention improves the service life and reliability of the cutting mechanism, thereby ensuring the stability of tunneling machine operations.

[0023] Example 2

[0024] like Figure 1 As shown, this embodiment adds an oil detection device 7 to the embodiment 1. The oil detection device 7 is connected to the lubricating oil compensation device 6. The lubricating oil compensation device 6 and the oil detection device 7 are integrated on the tunneling machine operating platform 8.

[0025] The present invention additionally provides an oil detection device 7, which can sample and analyze the lubricating oil to avoid malfunctions caused by poor oil quality.

[0026] Example 3

[0027] like Figure 1 As shown, this invention discloses an automatic lubricating oil compensation type cutting mechanism, including a cutting head 1, a cutting arm 2, a cutting reducer 3, a cutting motor 4, a motor housing 5, a lubricating oil compensation device 6, an oil quality detection device 7, and a tunneling machine operating platform 8. The cutting head 1 and the cutting reducer 3 are respectively fixedly installed at both ends of the cutting arm 2, the cutting reducer 3 is fixedly installed at the front end of the motor housing 5, and the cutting motor 4 is placed inside the motor housing 5. Figure 2 As shown, the output shaft of the cutting motor 4 is connected to the input shaft of the cutting reducer 3, one end of the main shaft 10 of the cutting arm 2 is connected to the output shaft of the cutting reducer 3, and the other end is connected to the cutting head 1, so as to transmit the power of the cutting motor 4 to the cutting head 1 through the cutting reducer 3 and the cutting arm 2.

[0028] like Figure 1 As shown, the oil testing device 7 is equipped with a viscometer, a moisture analyzer, and a particle counter, providing functions for detecting lubricating oil viscosity, moisture content, and particulate contamination. The lubricating oil compensation device 6 and the oil testing device 7 are integrated with the tunneling machine's control panel 8. The lubricating oil chamber pressure, lubricating oil viscosity, moisture content, and particulate contamination levels are displayed on the panel of the control panel 8, allowing for real-time online monitoring and preventing malfunctions caused by poor oil quality.

[0029] The lubricating oil compensation device 6 in this invention has automatic lubricating oil compensation and oil pressure display functions. It is one of mechanical hydraulic automatic compensation, electro-hydraulic automatic compensation and volumetric automatic compensation. This embodiment uses electro-hydraulic automatic compensation as an example.

[0030] like Figure 2 As shown, the cutting arm 2 is equipped with an outer cylinder 9, a main shaft 10, a floating oil seal seat 11, a floating oil seal 12, a floating oil seal frame 13, a front bearing 14, a rear bearing 15, an oil seal 16, and a lubricating oil cavity 19. The lubricating oil cavity 19 is a cavity formed by the outer cylinder 9, the front bearing 14, the rear bearing 15, the floating oil seal 12, and the oil seal 16. The floating oil seal seat 11 is fixedly installed on the main shaft 10; the floating oil seal frame 13 is fixedly installed on the front end of the outer cylinder 9; the floating oil seal 12 is installed between the floating oil seal seat 11 and the floating oil seal frame 13 for sealing the front end of the lubricating oil cavity 19; the main shaft 10 is fixedly installed inside the outer cylinder 9 through the front bearing 14 and the rear bearing 15; the oil seal 16 is installed at the rear end of the outer cylinder 9 for sealing the rear end of the lubricating oil cavity 19; the outer cylinder 9 is provided with an oil replenishment channel 17 and an oil drain channel 18 for replenishing and draining lubricating oil, respectively.

[0031] like Figure 3 As shown, the lubricating oil compensation device 6 includes an oil reservoir 20, a motor 21, a pump 22, an oil replenishment actuator 23, a pressure sensor 24, a controller 25, a return oil actuator 26, an oil replenishment line 27, and a return oil line 28. The motor 21 is fixedly connected to the pump 22; the pump 22 is connected to the oil reservoir 20. The two ends of the oil replenishment actuator 23 are connected to the pump 22 and the oil replenishment line 27, respectively. The two ends of the return oil actuator 28 are connected to the oil reservoir 20 and the return oil line 28, respectively. The oil replenishment line 27 is connected to the lubricating oil chamber 19 of the cutting arm 2 through an oil replenishment channel 17 on the outer cylinder 9; the return oil line 28 is connected to the lubricating oil chamber 19 through an oil drain channel 18 on the outer cylinder 9. The lubricating oil compensation device 6 is connected to the lubricating oil chamber 19, maintaining a constant and adjustable pressure in the lubricating oil chamber 19, thus protecting the seals of the lubricating oil chamber.

[0032] Pressure sensor 24 is located at the outlet of oil replenishment actuator 23 to detect the pressure of lubricating oil chamber 19; controller 25 is electrically connected to motor 21, oil replenishment actuator 23, pressure sensor 24 and oil return actuator 26 respectively to control the operation of motor 21, oil replenishment actuator 23 and oil return actuator 26; oil reservoir 20 is equipped with oil level display 29 to display oil quantity.

[0033] In this invention, the pressure sensor 24 collects the pressure value of the lubricating oil chamber 19 in real time and transmits it to the controller 25 through an electrical signal. The lubricating oil chamber 19 is no longer equipped with a pressure venting device. Instead, the controller 25 sets the pressure and keeps the pressure stable. This allows the lubricating oil to fill the oil chamber, ensuring that the front end of the cutting mechanism is fully lubricated when it is lifted.

[0034] A decrease in the amount of lubricating oil will cause a decrease in the pressure of the lubricating oil chamber 19. When the pressure is lower than the set lower limit, the controller 25 triggers the motor 21 to start. The motor 21 drives the pump 22 to work and controls the oil replenishment actuator 23 to conduct, replenishing the lubricating oil chamber 19 of the cutting arm 2 through the oil replenishment pipeline 27. When the pressure is higher than the set upper limit, the controller 25 controls the return oil actuator 26 to conduct, draining the lubricating oil chamber 19 through the return oil pipeline 28. When the pressure returns to the set range value, the controller 25 shuts down the motor 21, the oil replenishment actuator 23 or the return oil actuator 26, stopping the oil replenishment or draining.

[0035] Example 4

[0036] This embodiment discloses a tunneling machine equipped with an automatic lubricating oil compensation type cutting mechanism as described in Embodiment 1, Embodiment 2, or Embodiment 3.

[0037] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A cutting mechanism with automatic lubricating oil compensation, characterized in that: The device includes a motor housing (5), in which a cutting motor (4) is installed. A cutting reducer (3) is installed at the front end of the motor housing (5). The cutting reducer (3) is connected to the rear end of the cutting arm (2). The front end of the cutting arm (2) is connected to the cutting head (1). The cutting motor (4) drives the cutting head (1) to rotate through the cutting reducer (3). The cutting arm (2) is connected to a lubricating oil compensation device (6). The lubricating oil compensation device (6) is used to keep the lubricating oil pressure in the cutting arm (2) stable.

2. The automatic lubricating oil compensation type cutting mechanism according to claim 1, characterized in that: The lubricating oil compensation device (6) is connected to the oil detection device (7), and the lubricating oil compensation device (6) and the oil detection device (7) are integrated on the tunneling machine operating platform (8).

3. The automatic lubricating oil compensation type cutting mechanism according to claim 1, characterized in that: The cutting arm (2) includes a main shaft (10), which is installed inside the outer cylinder (9) via a front bearing (14) and a rear bearing (15). A floating oil seal seat (11) is installed on the main shaft (10). A floating oil seal frame (13) is installed at the front end of the outer cylinder (9). A floating oil seal (12) is installed between the floating oil seal seat (11) and the floating oil seal frame (13). An oil seal (16) that contacts the main shaft (10) is installed at the rear end of the outer cylinder (9). The front bearing (14) and the rear bearing (15) are located between the floating oil seal (12) and the oil seal (16). A lubricating oil cavity (19) is formed between the main shaft (10), the outer cylinder (9), the floating oil seal (12), and the oil seal (16). The outer cylinder (9) is provided with an oil replenishment channel (17) and an oil drain channel (18) that are connected to the lubricating oil chamber (19). The oil replenishment channel (17) and the oil drain channel (18) are connected to the lubricating oil compensation device (6).

4. The automatic lubricating oil compensation type cutting mechanism according to claim 3, characterized in that: The rear end of the main shaft (10) is connected to the output shaft of the cutting reducer (3), and the front end is connected to the cutting head (1).

5. The automatic lubricating oil compensation type cutting mechanism according to claim 3, characterized in that: The lubricating oil compensation device (6) includes an oil storage tank (20), which is connected to a pump (22). The pump (22) is driven by a motor (21). The pump (22) is connected to the oil supply pipeline (27) through an oil supply actuator (23) and to the oil return pipeline (28) through an oil return actuator (28). A pressure sensor (24) is provided at the outlet of the oil supply actuator (23). The pressure sensor (24) is electrically connected to the signal input terminal of the controller (25). The signal output terminal of the controller (25) is electrically connected to the motor (21), the oil supply actuator (23), and the oil return actuator (28).

6. The automatic lubricating oil compensation type cutting mechanism according to claim 5, characterized in that: The oil storage tank (20) is equipped with an oil level indicator (29).

7. The automatic lubricating oil compensation type cutting mechanism according to claim 1, characterized in that: The lubricating oil compensation device (6) is one of mechanical hydraulic automatic compensation, electro-hydraulic automatic compensation, and volumetric automatic compensation.

8. The automatic lubricating oil compensation type cutting mechanism according to claim 2, characterized in that: The oil testing device (7) is equipped with a viscometer, a moisture analyzer and a particle counter.

9. The automatic lubricating oil compensation type cutting mechanism according to claim 2, characterized in that: The operating console (8) is equipped with a display panel, which is electrically connected to the oil testing device (7).

10. A tunneling machine, characterized in that: It is equipped with the automatic lubricating oil compensation type cutting mechanism as described in any one of claims 1 to 9.

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