A tunneling machine oil feeding device

Abstract

The utility model discloses a kind of tunneling machine oil supply device, it is related to oil supply device technical field;Including spray unit, sealing unit and lubricating oil supply unit;The inner circumferential surface of the shaft sleeve is provided with water diversion ring groove in middle part position;Spray unit is connected with the spray pipe in tunneling head by water diversion ring groove;The sealing unit is located between the driving shaft and the shaft sleeve, and sealing unit is set in the both ends of the inner circumferential surface of the shaft sleeve;Water diversion ring groove is located between the sealing unit of both ends;Lubricating oil supply unit is connected with sealing unit and is used to oil supply to sealing unit;The utility model solves the problem that high pressure water leaks into the oil supply system of lubricating oil, ensures that the tunneling head of tunneling machine can keep lubrication while normal spray dust removal.

Description

Technical Field

[0001] This utility model relates to an oil supply device, specifically an oil supply device for a tunneling machine. Background Technology

[0002] A tunneling machine (TBM) is a machine used to excavate tunnels in flat ground. A TBM mainly consists of a traveling mechanism, a working mechanism, a loading mechanism, and a transfer mechanism. As the traveling mechanism advances, the cutting head in the working mechanism continuously breaks up the rock and removes the broken rock. In the coal mining process, a large number of coal (rock) tunnels need to be constructed, and these tunnels are mainly constructed using TBMs.

[0003] The cutting head of a tunneling machine generates a large amount of dust during the cutting of coal (rock). To minimize dust generation during tunnel excavation, dust suppression measures must be implemented. Among various dust reduction methods, internal spraying of the tunneling machine should be the most effective. Currently, most internal spraying devices use nozzles to atomize water under pressure, causing dust particles to adhere to the surface of the atomized water droplets and settle, thus achieving a dust suppression effect.

[0004] In the existing technology, the original tunneling machine's telescopic rotating water seal system begins to leak after 7 to 10 days of normal use. This causes the spray water to seep into the drive shaft lubricating oil, leading to lubricating oil emulsification and nozzle blockage. As a result, the original internal spray of the tunneling machine cannot be used normally for a long time, affecting the normal operation of the lubrication system and the lubrication of the tunneling head.

[0005] Therefore, since the original sealing system inside the tunneling machine cannot continuously obtain lubricating oil, it is in a water lubrication state. Because the water film is difficult to form and has low strength and poor toughness, an excessive water film will lead to increased leakage, which will make the drive shaft easy to be damaged.

[0006] Therefore, it is urgent to improve the lubrication system of the original tunneling machine's telescopic section so that the atomization system and the lubrication system do not interfere with each other. Utility Model Content

[0007] This invention overcomes the shortcomings of the prior art by proposing a tunneling machine oil supply device that solves the problem of high-pressure water leakage into the lubrication system, ensuring lubrication while maintaining normal spray dust removal.

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0009] A tunneling machine lubrication device includes a drive shaft and a bushing. The bushing is fitted onto the outer circumferential surface of the drive shaft, and the drive shaft rotates within the bushing. A tunneling head is connected to the front end of the drive shaft. A spray pipe is installed inside the tunneling head. The device also includes a spray unit, a sealing unit, and a lubricating oil supply unit. A water-guiding annular groove is provided at the center of the inner circumferential surface of the bushing. The spray unit is connected to the spray pipe inside the tunneling head through the water-guiding annular groove. The sealing unit is located between the drive shaft and the bushing, and sealing units are provided at both ends of the inner circumferential surface of the bushing. The water-guiding annular groove is located between the sealing units at both ends. The lubricating oil supply unit is connected to the sealing unit for supplying oil to the sealing unit.

[0010] Furthermore, the spraying unit includes a water supply pipe, a water intake pipe, and a spray water supply pipe; the water supply pipe is connected to the water intake annular groove, the water intake pipe is mounted on the drive shaft, the water intake annular groove is connected to the water intake pipe on the drive shaft, the water intake pipe is connected to the spray water supply pipe on the drive shaft, and the spray water supply pipe is connected to the spray pipe on the tunneling head.

[0011] Furthermore, the spray unit also includes a water pump, which is connected to an external water supply facility; the water pump is fixed on the tunneling machine and connected to one end of a water supply pipe.

[0012] Furthermore, multiple sealing mounting grooves are provided on the inner circumferential surfaces of both ends of the bushing, and the sealing unit is disposed within the sealing mounting grooves, with the sealing mounting grooves at both ends being symmetrical; the lubricating oil supply unit is connected to the sealing mounting grooves.

[0013] Furthermore, the sealing unit includes an annular sealing body and a clamping member; the annular sealing body is disposed in the sealing mounting groove and abuts against the outer peripheral surface of the drive shaft; the clamping member is disposed at the bottom of the sealing mounting groove and abuts against the annular sealing body.

[0014] Furthermore, an oil groove is provided on the part of the annular seal that abuts against the drive shaft, and the oil groove contains lubricating oil; each annular seal has two oil grooves; the two oil grooves are arranged along the axial direction of the annular seal.

[0015] Furthermore, the lubricating oil supply unit includes an oil delivery pipe, a lubricating oil filling pipe, and an oil supply pipe; the oil supply pipe is connected to the oil delivery pipe; there are two oil delivery pipes, each corresponding to a sealing mounting groove at one end of the bushing, and one end of the oil delivery pipe is connected to a lubricating oil filling pipe, which is connected to the sealing mounting groove.

[0016] Furthermore, the lubricating oil supply unit also includes an oil pump, which is mounted on the tunneling machine and connected to an external oil tank; the oil pump is connected to an oil supply pipe.

[0017] Furthermore, the clamping element is an O-ring.

[0018] Furthermore, the sealing installation groove, water inlet ring groove, and oil groove are all concave annular grooves.

[0019] The beneficial effects of this utility model compared to the prior art are as follows:

[0020] This invention features a water-guiding ring groove on the bushing, connected to the drive shaft and bushing via a spray unit. This allows water mist to be provided to the excavating section of the excavating head on the drive shaft to remove dust generated during excavation. Furthermore, a sealing unit is installed between the drive shaft and bushing to maintain a seal, thus isolating the water and oil passages and preventing water from entering the oil passages. Simultaneously, it ensures good lubrication of the lubricating oil between the drive shaft and bushing, providing lubrication to the rotating parts between them and preventing water from entering the oil passages. Specifically:

[0021] 1. By setting up an annular seal and clamping components, liquid leakage can be effectively prevented, ensuring the normal operation of the spray unit, thereby improving the stability and reliability of the equipment; the lubricating oil in the oil groove can form a lubricating film between the drive shaft and the annular seal, which helps to reduce friction and wear between them. With the cooperation of the annular seal and the O-ring, the precise seal between the drive shaft and the bushing is ensured, thereby helping to enhance the sealing effect.

[0022] 2. By installing an oil pump and oil supply pipe, sufficient lubrication is ensured between the annular seal and the drive shaft, which also reduces equipment failures and damage caused by insufficient lubrication, thereby reducing maintenance costs.

[0023] 3. By setting up water pumps, water supply pipes, water inlet pipes, and spray water supply pipes, dust is made to adhere to the surface of mist-like water particles and settle down.

[0024] The oil supply device for the tunneling machine of this utility model ensures precise sealing between the drive shaft and the bushing, reduces equipment failures and damage caused by insufficient lubrication, and improves the working stability and reliability of the tunneling head. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a tunneling machine oil supply device according to the present invention.

[0026] Figure 2 This is a cross-sectional view of a tunneling machine oil supply device according to the present invention.

[0027] Figure 3 for Figure 2 Enlarged view of point A.

[0028] Figure label:

[0029] 1-Drive shaft, 2-Shaft sleeve, 3-Spray unit, 4-Sealing unit, 5-Lubricating oil supply unit;

[0030] 21-Water intake ring groove, 22-Sealing installation groove;

[0031] 31-Water pump, 32-Water supply pipe, 33-Water intake pipe, 34-Spray water supply pipe;

[0032] 41-Annular seal, 42-Clamping element, 411-Oil groove;

[0033] 51-Oil pump, 52-Oil delivery pipe, 53-Lubrication and refueling pipe, 54-Oil supply pipe. Detailed Implementation

[0034] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0035] See Figures 1-3 This embodiment proposes a lubrication device for a tunneling machine, including a drive shaft 1, a bushing 2, a spray unit 3, a sealing unit 4, and a lubricating oil supply unit 5; the bushing 2 is sleeved on the outer circumferential surface of the drive shaft 1 and the drive shaft 1 can rotate within the bushing 2; the two are clearance-fitted and the drive shaft 1 can rotate at high speed within the bushing 2. A tunneling head is connected to the front end of the drive shaft 1.

[0036] A water-guiding ring groove 21 is provided at the middle position of the inner circumferential surface of the bushing 2;

[0037] The spray unit 3 is connected to the drive shaft 1 and the bushing 2. The spray unit 3 is used to provide a high-pressure water source to the tunneling head on the drive shaft 1, so that the tunneling head of the drive shaft 1 sprays water mist outward while tunneling at high speed, and adsorbs the dust generated during tunneling.

[0038] The sealing unit 4 is located between the drive shaft 1 and the bushing 2, and a sealing unit 4 is provided at both ends of the inner circumferential surface of the bushing 2. This allows the drive shaft 1 and the bushing 2 to remain sealed, thus isolating the water passage and the oil passage, preventing water from entering the oil passage, and ensuring that the lubricating oil maintains a good lubrication state between the drive shaft 1 and the bushing 2.

[0039] A lubricating oil supply unit 5 is provided at the sealing unit 4. The lubricating oil supply unit 5 is connected to the drive shaft 1 and the bushing 2, and is used to provide lubrication for the relatively rotating parts between the drive shaft 1 and the bushing 2 and to prevent water from entering the oil passage. This ensures lubrication and high-speed rotation between the bushing 2 and the drive shaft 1, reduces the rigid friction caused by high-speed rotation between the bushing 2 and the drive shaft 1, and ensures the dust removal function of the tunneling machine and maintains a longer service life.

[0040] When using the aforementioned tunneling machine lubrication device, the drive shaft 1 is inserted into the bushing 2; the sealing unit 4 between the bushing 2 and the drive shaft 1 increases the sealing between the drive shaft 1 and the bushing 2. During the high-speed rotation of the drive shaft 1, the spray unit 3 highly diffuses water under certain pressure, spraying it from the tunneling head and atomizing it. Due to the large surface area of ​​the water mist particles, the water mist particles have a strong adsorption capacity, which can quickly adsorb dust particles in the air, forming larger particle clusters that settle to the ground under gravity, thereby effectively reducing suspended particulate matter in the air and reducing the impact of dust on the surrounding environment.

[0041] The spray unit 3 includes a water pump 31, a water supply pipe 32, a water inlet pipe 33, and a spray water supply pipe 34; one end of the water supply pipe 32 is connected to the water pump 31, which is connected to an external water supply facility; the other end of the water supply pipe 32 is connected to the water inlet ring groove 21, and water is supplied to the water inlet ring groove 21 through the water pump 31 and the water supply pipe 32.

[0042] Specifically, the water-guiding annular groove 21 is arranged in a ring around the inner circumferential surface of the bushing 2, and is located between the sealing units 4 at both ends of the drive shaft 1, such as... Figure 2 As shown. A water pump 31 connected to an external water source is fixed on the tunneling machine. The water pump 31 draws water from the external water source and supplies water to the water intake ring trough 21. The water supply pipe 32 is connected to the water intake ring trough 21 and injects water with a certain water pressure into the water intake ring trough 21.

[0043] The water inlet pipe 33 is installed on the drive shaft 1. The water inlet ring groove 21 is connected to the water inlet pipe 33 on the drive shaft 1. The water inlet pipe 33 is connected to the spray water supply pipe 34 on the drive shaft 1. The spray water supply pipe 34 is connected to the spray pipe on the tunneling head.

[0044] When the drive shaft 1 rotates, the water inlet ring groove 21 is annular, ensuring that the water inlet pipe 33 remains connected to the water inlet ring groove 21 throughout the rotation process, thus guaranteeing a continuous water supply. Water flows through the water supply pipe 32, the water inlet pipe 33, and the spray water supply pipe 34, reaching the spray pipe inside the tunneling head. This atomizes the water inside the tunneling head. During the drilling process, the water mist adsorbs dust, causing the dust to adhere to the surface of the misty water particles and settle down, thereby reducing the dust concentration.

[0045] On the inner circumferential surface of the bushing 2, multiple sealing mounting grooves 22 are provided at both ends. The sealing unit 4 is disposed within the sealing mounting grooves 22, and the sealing mounting grooves 22 at the two ends are symmetrical.

[0046] like Figure 2 In this embodiment, four sealing mounting grooves 22 are provided. The four sealing mounting grooves 22 are arranged along the central axis of the bushing 2 at both ends of the bushing 2. Similar to the water inlet ring groove 21, the sealing mounting groove 22 is also a concave annular groove.

[0047] The sealing unit 4 includes an annular sealing body 41 and a clamping member 42; the annular sealing body 41 is disposed in the sealing mounting groove 22 and abuts against the outer peripheral surface of the drive shaft 1; the clamping member 42 is disposed at the bottom of the sealing mounting groove 22 and abuts against the annular sealing body 41.

[0048] By fixing the annular seal 41 into the sealing mounting groove 22 of the bushing 2 and abutting against the drive shaft 1, this design ensures a precise seal between the drive shaft 1 and the bushing 2, effectively preventing water leakage, ensuring the normal operation of the spray unit, and thus improving the stability and reliability of the equipment.

[0049] Meanwhile, the sealing unit 4 creates multiple sealing barriers between the drive shaft 1 and the bushing 2. This significantly improves the reliability and safety of the seal, reducing the risk of equipment failure due to seal failure.

[0050] In this embodiment, the clamping element 42 is an O-ring. By using an O-ring as a clamping element, the O-ring can fit tightly against the sealing surface and press the annular sealing body, thereby further ensuring the sealing performance between the drive shaft 1 and the bushing 2.

[0051] An oil groove 411 is provided on the part of the annular seal 41 that abuts against the drive shaft 1, and the oil groove 411 contains lubricating oil. Each annular seal 41 has two oil grooves 411. The two oil grooves 411 are arranged along the axial direction of the annular seal 41. The oil groove 411 is a concave annular groove. The oil groove 411 is filled with lubricating oil. The clamping member 42 is sleeved on the annular seal 41. The lubricating oil in the oil groove 411 can form a lubricating film between the drive shaft 1 and the annular seal 41, which helps to reduce friction and wear between the drive shaft 1 and the annular seal 41, thereby helping to enhance the sealing effect.

[0052] The lubricating oil supply unit 5 includes an oil pump 51, an oil delivery pipe 52, a lubricating oil filling pipe 53, and an oil supply pipe 54. The oil pump 51 is mounted on the tunneling machine and connected to an external oil tank. The oil pump 51 is connected to the oil supply pipe 54, and the oil supply pipe 54 is connected to the oil delivery pipe 52. There are two oil delivery pipes 52, each corresponding to one of two sets of sealing mounting grooves 22, located between two adjacent sealing mounting grooves 22. One end of the oil delivery pipe 52 is connected to the lubricating oil filling pipe 53, and both ends of the lubricating oil filling pipe 53 are connected to two adjacent sealing mounting grooves 22 respectively. Lubricating oil is input into the sealing mounting groove 22 through the oil supply pipe 54, the oil delivery pipe 52, and the lubricating oil filling pipe 53, so that the contact part between the annular seal 41 and the drive shaft 1 is kept lubricated.

[0053] Through the design of the oil supply pipe 52 and the lubrication filling pipe 53, the lubricating oil can be evenly distributed to the annular seal body 41 in each sealing mounting groove 22. During use, when the drive shaft 1 rotates, the oil pump 51 draws lubricating oil, which flows through the oil supply pipe 54, the oil supply pipe 52 and the lubrication filling pipe 53, and enters the sealing mounting groove 22. It then permeates from the gap into the oil groove 411, ensuring that the lubricating oil is evenly distributed to the annular seal body 41 in each sealing mounting groove 22. This ensures that the annular seal body 41 and the drive shaft 1 are adequately lubricated. This uniform lubrication helps to reduce friction and wear, and also reduces equipment failures and damage caused by insufficient lubrication, thereby reducing maintenance costs.

[0054] The implementation principle of the lubrication device for a tunneling machine in this embodiment is as follows:

[0055] Water pump 31 draws external water to supply water to water inlet ring trough 21. The water flows through water supply pipe 32, water inlet pipe 33 and spray water supply pipe 34 to reach spray pipe inside the tunneling head, realizing atomization of water inside the tunneling head. During the drilling process of the tunneling head, water mist adsorbs dust, so that dust adheres to the surface of mist water particles and settles down.

[0056] During the rotation of the drive shaft 1, the lubricating oil in the oil groove 411 can form a lubricating film between the drive shaft 1 and the annular seal 41, which helps to reduce friction and wear between them. With the cooperation of the annular seal 41 and the O-ring, the precise seal between the drive shaft 1 and the bushing 2 is ensured. The oil pump 51 draws lubricating oil, which flows through the oil supply pipe 54, the oil delivery pipe 52 and the lubrication filling pipe 53, and enters the sealing installation groove 22. It penetrates from the gap into the oil groove 411, ensuring that the annular seal 41 and the drive shaft 1 are adequately lubricated, thereby improving the sealing performance of the internal spray device.

[0057] Since the sealing unit 4 is located at both ends of the inner circumferential surface of the bushing 2, and the water inlet ring groove 21 of the spray water is located in the middle of the inner circumferential surface of the bushing 2, between the two sealing units 4, the lubricating oil supply unit 5 is used to continuously supply lubricating oil to the sealing unit 4, so that the oil pressure in the sealing unit 4 is always greater than the water pressure of the spray water, thus making it difficult for water to leak out from the gap between the drive shaft 1 and the bushing 2 and enter the sealing unit 4, significantly reducing the rigid friction between them, and thus easily improving the sealing performance of the internal spray device.

[0058] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. It should not be considered that the specific embodiments of the present invention are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the present invention, and all such deductions or substitutions should be considered to fall within the scope of patent protection determined by the submitted claims.

Claims

1. A lubrication device for a tunneling machine, comprising a drive shaft (1) and a bushing (2), wherein the bushing (2) is sleeved on the outer circumferential surface of the drive shaft (1) and the drive shaft (1) rotates within the bushing (2); a tunneling head is connected to the front end of the drive shaft (1); a spray pipe is provided inside the tunneling head; characterized in that, It also includes a spray unit (3), a sealing unit (4) and a lubricating oil supply unit (5); a water-guiding ring groove (21) is provided at the middle position of the inner circumferential surface of the bushing (2); the spray unit (3) is connected to the spray pipe inside the tunneling head through the water-guiding ring groove (21); the sealing unit (4) is located between the drive shaft (1) and the bushing (2), and a sealing unit (4) is provided at both ends of the inner circumferential surface of the bushing (2); the water-guiding ring groove (21) is located between the sealing units (4) at both ends; the lubricating oil supply unit (5) is connected to the sealing unit (4) for supplying oil to the sealing unit (4).

2. The lubrication device for a tunneling machine according to claim 1, characterized in that, The spray unit (3) includes a water supply pipe (32), a water inlet pipe (33), and a spray water supply pipe (34); the water supply pipe (32) is connected to the water inlet ring groove (21), the water inlet pipe (33) is installed on the drive shaft (1), the water inlet ring groove (21) is connected to the water inlet pipe (33) on the drive shaft (1), the water inlet pipe (33) is connected to the spray water supply pipe (34) on the drive shaft (1), and the spray water supply pipe (34) is connected to the spray pipe on the tunneling head.

3. The lubrication device for a tunneling machine according to claim 2, characterized in that, The spray unit (3) also includes a water pump (31), which is connected to an external water supply facility; the water pump (31) is fixed on the tunneling machine and is connected to one end of the water supply pipe (32).

4. The lubrication device for a tunneling machine according to claim 1, characterized in that, Multiple sealing mounting grooves (22) are provided on the inner circumferential surfaces of both ends of the bushing (2). The sealing unit (4) is located inside the sealing mounting groove (22). The sealing mounting grooves (22) at both ends are symmetrical. The lubricating oil supply unit (5) is connected to the sealing mounting groove (22).

5. A tunneling machine lubrication device according to claim 4, characterized in that, The sealing unit (4) includes an annular sealing body (41) and a clamping member (42); the annular sealing body (41) is located in the sealing mounting groove (22) and abuts against the outer peripheral surface of the drive shaft (1); the clamping member (42) is located at the bottom of the sealing mounting groove (22) and abuts against the annular sealing body (41).

6. The lubrication device for a tunneling machine according to claim 5, characterized in that, An oil groove (411) is provided on the part of the annular seal (41) that abuts against the drive shaft (1), and the oil groove (411) contains lubricating oil; each annular seal (41) is provided with two oil grooves (411); the two oil grooves (411) are arranged along the axial direction of the annular seal (41).

7. A tunneling machine lubrication device according to claim 4, characterized in that, The lubricating oil supply unit (5) includes an oil delivery pipe (52), a lubricating oil filling pipe (53), and an oil supply pipe (54); the oil supply pipe (54) is connected to the oil delivery pipe (52); there are two oil delivery pipes (52), and the two oil delivery pipes (52) are respectively connected to the sealing mounting groove (22) at one end of the bushing (2), and one end of the oil delivery pipe (52) is connected to the lubricating oil filling pipe (53), and the lubricating oil filling pipe (53) is connected to the sealing mounting groove (22).

8. A tunneling machine lubrication device according to claim 7, characterized in that, The lubricating oil supply unit (5) also includes an oil pump (51), which is installed on the tunneling machine and connected to an external oil tank; the oil pump (51) is connected to the oil supply pipe (54).

9. A tunneling machine lubrication device according to claim 5, characterized in that, The clamping element (42) is an O-ring.

10. A tunneling machine lubrication device according to claim 6, characterized in that, The sealing installation groove (22), the water inlet ring groove (21), and the oil groove (411) are all concave annular grooves.

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