Shield tunneling machine knuckle bearing with self-lubricating structure

Abstract

The invention provides a shield tunneling machine knuckle bearing with a self-lubricating structure, and relates to the technical field of shield tunneling machine knuckle bearings. The interior of the joint seat is designed to be of a hollow structure, a bearing part is installed in the joint seat, a circular sealing plate is fixedly installed at the front end of an inner ring of the bearing part, and a matching frame is fixedly installed in the middle of the front end of the joint seat. When the shield tunneling machine is started to operate and the transmission main shaft drives the inner ring of the bearing part to rotate, a series of components linked with the inner ring of the bearing part, such as the circular sealing plate, the centrifugal filter casing, the bevel gear rotating cylinder and the input bevel gear cylinder, work cooperatively, and lubricating oil in the storage tank can be automatically and accurately conveyed to all key lubricating parts according to the actual operation working condition of equipment. The problem that the knuckle bearing is not lubricated in time due to the fact that the knuckle bearing of an existing shield tunneling machine always depends on manual regular lubricating oil filling to maintain the normal lubricating state and is very easy to neglect on-time lubricating oil filling due to busy is solved.

Description

Technical Field

[0001] The invention relates to the technical field of shield machine joint bearings, and in particular to a shield machine joint bearing with a self-lubricating structure. Background Art

[0002] Shield machine spherical bearings are key components in shield machines. They have the dual functions of rotation and swinging and need to withstand huge loads. Shield machine spherical bearings play a vital role in shield machines. They not only need to withstand the huge radial and axial loads generated by the shield machine during the excavation process, but also need to adapt to the eccentricity between the supporting shaft and the shaft housing hole to ensure that the shield machine can operate stably and efficiently.

[0003] Application No. CN202323296853.8 discloses a spherical bearing for a shield machine, which relates to the technical field of spherical bearings, and aims to solve the problem that the heat inside the existing spherical bearings is not easy to dissipate and the spherical bearings are not convenient to assemble. The invention comprises an outer ring one; four positioning grooves are arranged on the left side of the outer ring one; the outer ring two is arranged on the right side of the outer ring one; the inner ring is installed inside the outer ring one and the outer ring two; the connecting components are provided with four groups, and the four groups of connecting components are installed on the outer ring one and the outer ring two; the fixing components are provided with eight groups, and the eight groups of fixing components are installed on the left and right sides of the inner ring; the utility model reduces the wear between the inner ring and the outer ring one and the outer ring two, and improves the service life. When the inner ring or the outer ring one and the outer ring two rotate, the sixteen heat dissipation blades promote the air between the inner ring and the outer ring one and the outer ring two, which is conducive to the dissipation of heat.

[0004] Based on the search of the above patents and the understanding of the application of existing shield machine spherical bearings: 1. Traditional shield machine joint bearings often rely on manual regular lubrication to maintain normal lubrication. However, this method has many disadvantages: the shield machine construction environment is complex and the task is heavy. Operators are very likely to neglect the timely refilling of lubricants due to busyness, resulting in untimely lubrication of joint bearings, increased friction and wear between components, and thus shortened bearing service life. It may even cause equipment failure, resulting in construction stagnation and huge economic losses. 2. Even if the lubricating oil is added on time, it is difficult to ensure that the lubricating oil can be evenly and efficiently distributed to all parts that need lubrication. Problems such as insufficient local lubrication or accumulation of lubricating oil are prone to occur, which is also not conducive to the stable operation of the bearing.

[0005] Therefore, in view of this, the existing structure and defects are studied and improved, and a shield machine joint bearing with a self-lubricating structure is provided, in order to achieve a more practical purpose. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a shield machine joint bearing with a self-lubricating structure to solve the problem that the existing shield machine joint bearings often rely on manual regular filling of lubricating oil to maintain a normal lubrication state, and it is very easy to neglect the timely filling of lubricating oil due to busyness, resulting in untimely lubrication of the joint bearings and the joint bearings are prone to local insufficient lubrication or accumulation of lubricating oil during manual lubrication.

[0007] The present invention provides a shield machine joint bearing with a self-lubricating structure, specifically comprising: a joint seat; the interior of the joint seat is designed as a hollow structure, and a bearing part is installed in the internal position of the joint seat, a circular sealing plate is fixedly installed at the front end position of the inner ring of the bearing part, a matching frame is fixedly installed at the front middle position of the joint seat, the matching frame is located in front of the bearing part and is designed to be coaxial, a limiting shaft is fixedly installed at the middle front end position of the matching frame, the rear end position of the limiting shaft is a through-design, and twelve strip grooves are opened on the circumferential surface of the limiting shaft, the middle and rear position of the limiting shaft is sleeved and rotated on the front end position of the inside of a bevel gear rotating drum, the rear end position of the inside of the bevel gear rotating drum is a hollow through-design, three circular holes are opened at the middle and front end position of the bevel gear rotating drum, the three circular holes of the bevel gear rotating drum are located outside the twelve strip grooves of the limiting shaft, a bevel gear ring is fixedly installed at the rear end position of the limiting shaft, the bevel gear ring is located in the middle position of the inside of the bevel gear rotating drum, and an inspection plug is arranged at the front end position of the matching frame.

[0008] Furthermore, the bevel gear ring is coaxially designed with the bevel gear drum, and the middle position of the bevel gear ring is a through-design.

[0009] Furthermore, three rotatable overturned bevel gears are arranged at the rear end of the bevel gear drum. The three overturned bevel gears are distributed in a Y shape, and the distance between every two adjacent overturned bevel gears is the same.

[0010] Furthermore, the rear end of the bevel gear ring is meshed with three overturned bevel gears for transmission.

[0011] Furthermore, a centrifugal filter cover is fixedly installed at the rear end of the bevel gear drum, six filter holes are opened on the circumference of the centrifugal filter cover, and the centrifugal filter cover is located at the front end of the bevel gear ring.

[0012] Furthermore, the middle position of the rear end of the centrifugal filter cover is fixedly connected to the middle position of the front end of the circular sealing plate, and the centrifugal filter cover is located in the middle front position inside the joint seat.

[0013] Furthermore, the upper internal position of the matching frame is rotatably connected to the input bevel gear cylinder, the lower rear end position of the input bevel gear cylinder engages the upper front end position of the bevel gear rotating cylinder, the interior of the input bevel gear cylinder is a through-design, and a spirally designed spiral member is fixedly installed inside the input bevel gear cylinder.

[0014] Furthermore, a reserve tank is installed above the matching frame, the middle position of the input bevel gear cylinder passes through the middle position of the bottom of the reserve tank, a tank cover is screwed on the upper position of the reserve tank, and the upper middle position of the spiral member is located at the lower part of the interior of the reserve tank.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The shield machine joint bearing of the present invention realizes the self-lubricating and adaptive function through sophisticated structural design. When the shield machine starts to operate and the transmission main shaft drives the inner ring of the bearing to rotate, a series of components linked therewith, such as the circular sealing plate, the centrifugal filter cover, the bevel gear drum, the input bevel gear drum, etc., work together to automatically and accurately deliver the lubricating oil in the reserve tank to each key lubrication part according to the actual operating conditions of the equipment without manual intervention, effectively avoiding the risk of failure caused by the operator forgetting to add lubricating oil, greatly ensuring the continuous and stable operation of the shield machine, and significantly improving the construction efficiency.

[0016] 2. After the lubricating oil is transported to the inside of the matching frame, it will be transferred backward evenly and orderly with the help of the three circular holes of the bevel gear drum and the twelve strip grooves of the limiting shaft, ensuring that the lubricating oil can fully cover every corner inside the bearing and achieve efficient distribution. At the same time, in the meshing area between the bevel gear ring and the three overturned bevel gears, the lubricating oil is fully overturned and stirred, which can not only disperse the impurities therein, but also dilute the viscous lubricating oil to avoid adhesion, so that the lubricating oil can smoothly infiltrate the surfaces of all parts that need lubrication, further improve the lubrication effect, and extend the service life of the bearing.

[0017] 3. The design of the centrifugal filter cover provides reliable impurity protection for the bearing. The six filter holes evenly distributed on its circumference can use centrifugal force to throw out the lubricating oil during high-speed rotation, preventing undiluted lubricating oil from entering the joint seat and damaging the bearing parts due to lubrication. It enhances the adaptability of the bearing under harsh working conditions and ensures that the shield machine can operate stably for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] In the attached picture: Figure 1 A schematic diagram of a top view of a shield machine joint bearing with a self-lubricating structure according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the side view of the shield machine joint bearing with a self-lubricating structure according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of a half-section side view of a shield machine joint bearing with a self-lubricating structure according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of the overall side view of the joint seat according to an embodiment of the present invention is shown; Figure 5 It shows a left-view structural schematic diagram of a half-section assembly of a matching frame, a storage tank and a test plug according to an embodiment of the present invention; Figure 6 It shows a schematic side view of the half-section assembly structure of the matching frame, the storage tank and the inspection plug according to an embodiment of the present invention; Figure 7 A schematic diagram of a half-section side view of the assembly structure of the auxiliary parts of a matching frame according to an embodiment of the present invention is shown.

[0020] Reference numerals list 1. Joint seat; 101. Bearing; 102. Circular sealing plate; 2. Matching frame; 211. Limiting shaft; 201. Bevel gear drum; 202. Bevel gear ring; 203. Overturned bevel gear; 204. Centrifugal filter cover; 205. Input bevel gear drum; 206. Screw; 3. Reserve tank; 301. Tank cover; 4. Inspection plug. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0022] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present disclosure have the same meanings as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined in this manner in the embodiments of the present disclosure.

[0023] The "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "One", "one" or "the" and similar words do not indicate a quantity limitation, but indicate that there is at least one. Similarly, "including" or "comprising" and similar words mean that the element or object appearing in front of the word covers the elements or objects listed after the word and their equivalents, without excluding other elements or objects. In the following description, spatial and directional terms such as "upper", "lower", "front", "back", "top", "bottom", "vertical" and "horizontal" may be used to describe the embodiments of the present disclosure, but it should be understood that these terms are only for the convenience of describing the embodiments shown in the figures, and do not require the actual device to be constructed or operated in a specific orientation. In the following description, the use of terms such as "connect", "connect", "fix" and "attach" may refer to two elements or structures being directly connected without other elements or structures between them, or may refer to two elements or structures being indirectly connected through an intermediate element or structure, unless otherwise clearly stated in this article. Example

[0024] As attached Figure 1 To Attachment Figure 7 As shown: The present invention provides a shield machine joint bearing with a self-lubricating structure, comprising: a joint seat 1; the interior of the joint seat 1 is designed as a hollow structure, and a bearing member 101 is installed at an internal position of the joint seat 1, a circular sealing plate 102 is fixedly installed at the front end position of the inner ring of the bearing member 101, a matching frame 2 is fixedly installed at the front middle position of the joint seat 1, the matching frame 2 is located in the front position of the bearing member 101 and is designed to be coaxial, a limiting shaft 211 is fixedly installed at the front middle position of the matching frame 2, the rear end position of the limiting shaft 211 is designed to be through, and twelve strip grooves are opened on the circumference of the limiting shaft 211, and the middle and rear positions of the limiting shaft 211 are fixedly installed. The bevel gear cylinder 201 is provided with a hollow through-hole at the front end thereof. The bevel gear cylinder 201 is provided with three circular holes at the middle front end thereof. The three circular holes of the bevel gear cylinder 201 are located outside the twelve strip grooves of the limiting shaft 211. A bevel gear ring 202 is fixedly installed at the rear end thereof. The bevel gear ring 202 is located in the middle of the bevel gear cylinder 201. An inspection plug 4 is provided at the front end of the matching frame 2. When the inspection plug 4 is disassembled, the internal condition of the matching frame 2 can be visually checked to check whether the internal condition of the matching frame 2 needs maintenance.

[0025] Among them, the bevel gear ring 202 is designed to be coaxial with the bevel gear drum 201, and the middle position of the bevel gear ring 202 is a through design. Three rotatable overturned bevel gears 203 are arranged at the rear end position of the inner part of the bevel gear drum 201. The three overturned bevel gears 203 are distributed in a Y shape, and the spacing between each two adjacent overturned bevel gears 203 is the same. The rear end position of the bevel gear ring 202 is meshed with the three overturned bevel gears 203 for transmission. A centrifugal filter cover 204 is fixedly installed at the rear end position of the bevel gear drum 201. Six filter holes are opened on the circumference of the centrifugal filter cover 204, and the centrifugal filter cover 204 is located at the front end position of the bevel gear ring 202.

[0026] Among them, the middle position of the rear end of the centrifugal filter cover 204 is fixedly connected to the middle position of the front end of the circular sealing plate 102, the centrifugal filter cover 204 is located in the middle front position inside the joint seat 1, and the upper position inside the matching frame 2 is rotatably connected with the input bevel gear cylinder 205, the rear end position below the input bevel gear cylinder 205 engages with the upper position of the front end of the bevel gear rotating cylinder 201, the interior of the input bevel gear cylinder 205 is a through-design, and the interior of the input bevel gear cylinder 205 is fixedly installed with a spiral-designed screw 206.

[0027] Among them, a reserve tank 3 is installed at the upper position of the matching frame 2, the middle position of the input bevel gear cylinder 205 passes through the middle position of the bottom of the reserve tank 3, the tank cover 301 is screwed on the upper position of the reserve tank 3, and the middle upper position of the spiral part 206 is located at the lower part of the interior of the reserve tank 3. After the tank cover 301 is unscrewed, lubricating oil can be added to the inside of the reserve tank 3.

[0028] When using: The joint seat 1 is accurately and firmly fixed to the shield machine bearing docking position. This process needs to be strictly operated in accordance with the assembly process requirements of the shield machine, and professional positioning tools are used to ensure the installation accuracy of the joint seat 1, laying a solid foundation for the coordinated operation of subsequent components. Then, the bearing component 101 is meticulously installed inside the joint seat 1, using high-precision installation methods. It is necessary not only to ensure that the bearing component 101 is tightly fitted to the inner wall of the joint seat 1 and firmly installed, but also to accurately calibrate its position so that it is in the best working state. At the same time, the rear end of the inner ring of the bearing component 101 is docked with the transmission main shaft of the shield machine and firmly fixed to ensure that the connection between the two is tight and seamless, and can efficiently transmit power.

[0029] When the shield machine is started and the transmission main shaft begins to rotate, the inner ring of the bearing member 101 closely connected thereto rotates synchronously. Since the circular sealing plate 102 is fixed to the front end of the inner ring of the bearing member 101, it rotates together with the inner ring and drives the centrifugal filter cover 204 fixedly connected thereto to rotate. The rotation of the centrifugal filter cover 204 further drives the bevel gear drum 201 to rotate around its axis. At this time, the meshing transmission structure between the front end of the bevel gear drum 201 and the rear end of the input bevel gear drum 205 begins to function, transmitting the rotational power to the input bevel gear drum 205, prompting them to rotate synchronously.

[0030] The ingeniously designed spiral element 206 inside the input bevel gear cylinder 205 is one of the key components for realizing the self-lubricating function. After a proper amount of lubricating oil is pre-injected into the reserve tank 3, as the input bevel gear cylinder 205 rotates, the spiral element 206, based on its unique spiral structure design, continuously transports the lubricating oil in the reserve tank 3 through the internal channel of the input bevel gear cylinder 205 to the inside of the matching frame 2. In this way, even if the operator forgets to manually add lubricating oil due to busyness or negligence, the shield machine articulated bearing of the present invention can adaptively transport the lubricating oil to the parts that need lubrication in a timely and accurate manner according to the actual operating conditions, thereby greatly reducing the risk of failure caused by insufficient lubrication and ensuring the continuous and stable operation of the shield machine.

[0031] The lubricating oil transported to the inside of the matching frame 2 will flow into the three carefully designed circular holes at the front end of the bevel gear drum 201 and the twelve strip grooves evenly distributed on the circumference of the limit shaft 211 in sequence under the action of gravity and the driving force generated by the operation of subsequent components, and will be continuously transferred and transported backward along these channels. When the lubricating oil successfully reaches the rear end position inside the bevel gear drum 201, it is exactly in the meshing area between the bevel gear ring 202 and the three overturned bevel gears 203 that are distributed in a Y shape and evenly spaced. At this time, with the continuous meshing transmission between the bevel gear ring 202 and the three overturned bevel gears 203, the lubricating oil is fully overturned and stirred in this area. This process not only disperses the impurities in the lubricating oil, but more importantly, dilutes the lubricating oil that may have been relatively viscous through overturning and stirring, effectively avoiding the adhesion phenomenon when the lubrication is subsequently transferred to the bearing component 101, ensuring that the lubricating oil can smoothly penetrate the surfaces of each component that needs lubrication.

[0032] The lubricating oil after the dilution and overturning treatment is thrown out to the internal front end position of the joint seat 1 through the six filter holes evenly opened on the circumference of the centrifugal filter cover 204 under the action of centrifugal force as the centrifugal filter cover 204 rotates at high speed. At this time, the bearing component 101, which is running at high speed and urgently needs lubrication, happens to be in full contact with the thrown out lubricating oil, thereby achieving an efficient self-lubricating effect, greatly extending the service life of the bearing component 101, and improving the overall operating reliability of the shield machine.

[0033] In addition, an inspection plug 4 is cleverly provided at the front end of the matching frame 2. When the equipment needs to be maintained and inspected, the staff only needs to easily remove the inspection plug 4 to intuitively and clearly view the working condition inside the matching frame 2, and accurately judge whether the interior of the matching frame 2 needs to be cleaned, repaired or parts replaced, etc., which provides great convenience for daily maintenance and troubleshooting of the equipment.

[0034] The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure shall be based on the protection scope of the claims.

Claims

1. A shield machine joint bearing with a self-lubricating structure, characterized in that: include: The joint seat (1) has a hollow structure, and a bearing member (101) is installed in the joint seat (1). A circular sealing plate (102) is fixedly installed at the front end of the inner ring of the bearing member (101). A matching frame (2) is fixedly installed at the front middle of the joint seat (1). The matching frame (2) is located in front of the bearing member (101) and is designed to be coaxial. A limiting shaft (211) is fixedly installed at the front middle of the matching frame (2). The rear end of the limiting shaft (211) is designed to be through-through, and twelve strips are provided on the circumference of the limiting shaft (211). The middle and rear positions of the limit shaft (211) are sleeved and rotated on the front end position of the bevel gear rotating cylinder (201); the rear end position of the bevel gear rotating cylinder (201) is hollow and through-designed; three circular holes are opened at the middle and front end position of the bevel gear rotating cylinder (201); the three circular holes of the bevel gear rotating cylinder (201) are located outside the twelve strip-shaped grooves of the limit shaft (211); a bevel gear ring member (202) is fixedly installed at the rear end position of the limit shaft (211); the bevel gear ring member (202) is located in the middle position of the bevel gear rotating cylinder (201); and a test plug (4) is arranged at the front end position of the matching frame (2).

2. The shield machine joint bearing with a self-lubricating structure as claimed in claim 1, characterized in that: The bevel gear ring (202) is coaxially designed with the bevel gear rotating cylinder (201), and the middle position of the bevel gear ring (202) is designed to be through-penetrating.

3. The shield machine joint bearing with a self-lubricating structure as claimed in claim 1, characterized in that: Three rotatable overturned bevel gears (203) are arranged at the rear end of the bevel gear rotating drum (201); the three overturned bevel gears (203) are distributed in a Y shape, and the distance between every two adjacent overturned bevel gears (203) is the same.

4. The shield machine joint bearing with a self-lubricating structure as claimed in claim 1, characterized in that: The rear end of the bevel gear ring (202) is meshed with three overturned bevel gears (203) for transmission.

5. The shield machine joint bearing with a self-lubricating structure as claimed in claim 1, characterized in that: A centrifugal filter cover (204) is fixedly mounted at the rear end of the bevel gear drum (201), six filter holes are provided on the circumference of the centrifugal filter cover (204), and the centrifugal filter cover (204) is located at the front end of the bevel gear ring (202).

6. The shield machine joint bearing with a self-lubricating structure as claimed in claim 5, characterized in that: The middle position of the rear end of the centrifugal filter cover (204) is fixedly connected to the middle position of the front end of the circular sealing plate (102), and the centrifugal filter cover (204) is located at the middle front position inside the joint seat (1).

7. The shield machine joint bearing with a self-lubricating structure as claimed in claim 1, characterized in that: The upper position inside the matching frame (2) is rotatably connected to an input bevel gear cylinder (205), the lower rear end position of the input bevel gear cylinder (205) meshes with the upper front end position of the bevel gear rotating cylinder (201), the interior of the input bevel gear cylinder (205) is a through-design, and a spiral member (206) of a spiral design is fixedly installed inside the input bevel gear cylinder (205).

8. The shield machine joint bearing with a self-lubricating structure as claimed in claim 1, characterized in that: A reserve tank (3) is installed above the matching frame (2); the middle position of the input bevel gear cylinder (205) passes through the middle position of the bottom of the reserve tank (3); a tank cover (301) is screwed onto the upper position of the reserve tank (3); and the upper middle position of the spiral member (206) is located at the lower part of the interior of the reserve tank (3).

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