Self-lubricating wet type drilling box

Abstract

The utility model relates to the technical field of mining drilling machine equipment, and particularly discloses a self-lubricating wet-type drilling box which comprises a box body, a hydraulic motor, a main shaft, a hexagonal chuck and the like, two ends of the main shaft are supported in the box body through a first bearing and a second bearing, and a distribution ring is arranged in the middle of the main shaft. The hydraulic motor simultaneously conveys lubricating liquid to the two bearings through the lubricating oil input port, the lubricating oil output port and the inner channel, the main shaft inner channel and the distribution ring, and the problems that due to traditional series lubrication, the physical characteristics of the lubricating liquid are inconsistent, and the bearing abrasion difference is large are solved. Meanwhile, oil seals are arranged among the distribution ring, the box body and the main shaft, and a wear-resistant sleeve is arranged between the distribution ring and the main shaft, so that the sealing and wear-resistant performance is improved. The drilling box achieves efficient self-lubrication, reduces the maintenance cost, prolongs the service life and is suitable for drilling operation scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to mining drilling rig equipment technical field, concretely is a kind of self-lubricating wet drilling box. BACKGROUND

[0002] In coal mine underground mining operation, anchor rod support is the key link to ensure roadway stability and safety production. Anchor rod support construction cannot do without anchor rod drill, and drilling box as the core component of anchor rod drill, its performance directly affects the efficiency and quality of the whole supporting operation.

[0003] At present, the drilling box used in most coal mines still relies on manual greasing for lubrication. This method requires workers to operate regularly and frequently, with great labor intensity. In actual operation, due to the complex environment of coal mining and heavy work tasks, workers often find it difficult to strictly follow the prescribed time and standard for oiling operation. Once the oiling is not timely, the key components such as bearings and gears in the drilling box will be insufficiently lubricated, causing increased wear and tear, generating a large amount of heat, and further leading to deformation and failure of the components, seriously shortening the service life of the drilling box. According to incomplete statistics, drilling box failures caused by untimely manual oiling account for 30%-40% of the total drilling box failures, greatly affecting the continuity and stability of coal production. Frequent manual oiling not only consumes a lot of manpower, but also brings high maintenance costs. In addition to the cost of purchasing grease, the cost of equipment repair and replacement of parts due to drilling box failure, as well as the production loss caused by downtime, all greatly increase the cost of coal mining. Moreover, each time the drilling box is maintained, it needs to be disassembled and repaired, which is time-consuming and tedious. This greatly reduces the production efficiency and cannot meet the needs of efficient coal mining. In some large coal mines, the downtime caused by drilling box maintenance can last for 8-12 hours on average, directly affecting the coal production of thousands of tons.

[0004] Chinese patent CN218118181U discloses a self-lubricating wet drilling box, which comprises a drilling box body and a hydraulic motor. A drive shaft is installed in the drilling box body. A first limiting ring, a first bearing, a second limiting ring and a second bearing are sequentially arranged on the outer periphery of the drive shaft. A lubricating oil inlet channel and a lubricating oil return channel are provided in the hydraulic motor. A self-lubricating oil channel is formed on the drive shaft. The lubricating oil in the self-lubricating oil channel can lubricate the drive shaft and the two bearings. When the drilling box rotates at high speed, the hydraulic oil can form a circulation in the drilling box for lubrication, reducing the maintenance time of the drilling box by workers and the labor intensity of the workers, and improving the service life of the overall drilling box.

[0005] The above-mentioned patent provides a technical solution for lubricating two bearings in series, which leads to inconsistent physical properties of the lubricating fluid flowing through the two bearings, resulting in inconsistent lubrication effect of the assembly, causing different wear and tear of the two bearings, affecting the service life, and causing maintenance troubles. Practical new content

[0006] To solve the above problems, the utility model adopts the following technical scheme.

[0007] A self-lubricating wet drilling box, comprising a box body, a hydraulic motor is arranged at one end of the box body, a main shaft is rotatably arranged in the box body, one end of the main shaft is connected with the output end of the hydraulic motor, the other end of the main shaft is connected with a hexagonal chuck, first and second bearings are respectively arranged between the two ends of the main shaft and the inner wall of the box body, a distribution ring is arranged between the middle of the main shaft and the inner wall of the box body, liquid outlets are arranged at the upper and lower ends of the distribution ring, a liquid inlet is arranged on the inner wall of the distribution ring, a lubricating oil inlet is arranged on the side wall of the hydraulic motor, a lubricating oil return port is arranged on the side wall of the box body, the lubricating oil inlet is connected with the hydraulic motor, the main shaft, the distribution ring, the first bearing, the second bearing and the lubricating oil return port through a lubricating oil channel.

[0008] Preferably, the lubricating oil channel comprises a channel one arranged in the hydraulic motor and a channel two arranged in the main shaft, the channel one and the channel two are communicated, the channel two is communicated with the liquid inlet, a channel three is arranged in the box body and communicated to the outward side of the first bearing and the second bearing, the channel one is communicated with the lubricating oil inlet, the channel three is communicated with the lubricating oil return port, and a channel four is arranged between the first bearing, the second bearing and the distribution ring.

[0009] Preferably, oil seals one are arranged between the upper and lower ends of the distribution ring, the inner wall of the box body and the main shaft.

[0010] Preferably, the inner wall of the distribution ring is provided with an annular liquid inlet.

[0011] Preferably, a plurality of liquid outlets are annularly arranged at the upper and lower ends of the distribution ring, and a plurality of channel fours are arranged in the box body corresponding to the liquid outlets.

[0012] Preferably, a wear-resistant sleeve is arranged between the distribution ring and the main shaft.

[0013] Preferably, oil seals two are arranged between the two ends of the box body and the main shaft.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The utility model adopts the unique lubricating channel and the distribution ring design, so that the first bearing and the second bearing can simultaneously obtain the lubricating liquid with consistent physical properties, effectively solves the problem that the lubricating effects of the two bearings are inconsistent in the prior art, significantly reduces the wear difference of the bearings, prolongs the service life of the bearings, and further improves the overall reliability and stability of the drilling box.

[0016] The two bearings are consistent in abrasion, and the two bearings can be simultaneously inspected, replaced and the like during equipment maintenance, frequent maintenance and partial replacement caused by large abrasion difference of the bearings are avoided, the difficulty and cost of the maintenance are greatly reduced, and the continuity and efficiency of production operation are improved.

[0017] The application of the wear-resistant sleeve effectively reduces the friction between the distribution ring and the main shaft, prolongs the service life of the distribution ring, and further guarantees the long-term stable operation of the drill box. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is Figure 1 It is a section view along A-A direction in the utility model;

[0020] Figure 3 It is Figure 2 It is a local schematic view at B.

[0021] In the figure: 1, box body; 2, hydraulic motor; 21, lubricating oil input port; 22, lubricating oil return port; 23, passage one; 3, main shaft; 31, passage two; 4, hexagonal chuck; 5, first bearing; 6, second bearing; 7, distribution ring; 71, liquid outlet; 72, liquid inlet; 8, passage four; 9, oil seal one; 10, wear-resistant sleeve; 11, passage three; 12, oil seal two. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model; Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments; Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] In the description of the utility model, it should be explained that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the utility model, it is to explain, unless there is explicit provision and limitation, the term "installation", "set with", "sleeve set / with", "connection" and the like should be understood broadly, for example, "connection", can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements, for the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances. Embodiment

[0025] As Figures 1-3 Shown in the embodiment, a self-lubricating wet drilling box, including box 1, hydraulic motor 2, main shaft 3 and hex chuck 4.Box 1 as the support structure of the whole drilling box, provides mounting space and protection for other components.Hydraulic motor 2 is installed at one end of box 1, is the power source of drilling box, and its output end is closely matched with one end of main shaft 3, provides power for drilling operation.The other end of main shaft 3 is connected with hex chuck 4, which is used for clamping drill bit to carry out drilling operation.

[0026] In the embodiment, first bearing 5 and second bearing 6 are installed between the two ends of main shaft 3 and the inner wall of box 1 respectively, which bear the key role of supporting the rotation of main shaft 3.A distribution ring 7 is arranged between the middle of main shaft 3 and the inner wall of box 1.The upper and lower ends of distribution ring 7 are uniformly distributed with a plurality of liquid outlets 71, and the inner wall is provided with an annular liquid inlet 72.This design enables distribution ring 7 to uniformly distribute lubricating liquid to first bearing 5 and second bearing 6, ensuring that the two bearings obtain equal amounts of lubricating liquid with consistent physical properties.

[0027] In the embodiment, a lubricating oil inlet 21 is arranged on the side wall of hydraulic motor 2, and a lubricating oil return port 22 is arranged on the side wall of box 1.The lubricating oil channel is composed of channel one 23 in hydraulic motor 2, channel two 31 in main shaft 3, channel three 11 in box 1 and channel four 8 connecting distribution ring 7 with first bearing 5 and second bearing 6.Channel one 23 is in communication with lubricating oil inlet 21, channel one 23 is connected with channel two 31 in main shaft 3, and channel two 31 is in communication with liquid inlet 72 of distribution ring 7.Channel three 11 in box 1 is respectively communicated to the outward side of first bearing 5 and second bearing 6, and channel three 11 is in communication with lubricating oil return port 22.Channel four 8 connects liquid outlet 71 of distribution ring 7 with first bearing 5 and second bearing 6.When the lubricating liquid enters from lubricating oil inlet 21, it reaches distribution ring 7 through channel one 23 and channel two 31, and is simultaneously and equally delivered to first bearing 5 and second bearing 6 through liquid outlet 71 on distribution ring 7 and channel four 8, realizing synchronous lubrication of the two bearings and avoiding the problem of difference in physical properties of lubricating liquid caused by series lubrication.

[0028] In the embodiment, to ensure effective delivery of lubricating liquid and prevent leakage, oil seal one 9 is arranged between the upper and lower ends of the distribution ring 7 and the inner wall of the box 1 and the main shaft 3. Meanwhile, oil seal two 12 is arranged between the two ends of the box 1 and the main shaft 3, further enhancing the sealing performance of the drilling box, preventing foreign matter from entering and internal lubricating liquid from leaking. In addition, wear-resistant sleeve 10 is installed between the distribution ring 7 and the main shaft 3, reducing the friction between the distribution ring 7 and the main shaft 3, improving the service life of the distribution ring 7, and ensuring the stability of the lubricating liquid distribution.

[0029] The working principle and beneficial effects of the above technical solution are as follows:

[0030] In use, when the drilling box is working, the hydraulic motor 2 is started to drive the main shaft 3 and the hexagonal chuck 4 to rotate, and drive the drill bit to perform drilling operation. At the same time, the lubricating liquid enters from the lubricating oil input port 21 on the side wall of the hydraulic motor 2, and enters the channel two 31 in the main shaft 3 through the channel one 23.

[0031] The lubricating liquid flows into the liquid inlet 72 of the distribution ring 7 through the channel two 31, is uniformly distributed in the distribution ring 7, and then flows out from the liquid outlets 71 at the upper and lower ends of the distribution ring 7, and enters the first bearing 5 and the second bearing 6 through the channel four 8 at the same time and in equal amounts, lubricating the two bearings. During the lubrication process, the lubricating liquid carries heat and a small amount of impurities, and returns to the hydraulic motor 2 through the lubricating oil return port 22 through the channel three 11, and is treated again to participate in the lubrication cycle, ensuring the continuous and stable operation of the lubricating system.

[0032] The above is only a preferred specific embodiment of the present application; however, the protection scope of the present application is not limited thereto. Any skilled person in the art, according to the technical scheme and improvement concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A self-lubricating wet drill box, characterized in that, The device includes a housing (1), one end of which is connected to a hydraulic motor (2). A main shaft (3) is rotatably mounted inside the housing (1). One end of the main shaft (3) is connected to the output end of the hydraulic motor (2), and the other end of the main shaft (3) is connected to a hexagonal chuck (4). A first bearing (5) and a second bearing (6) are respectively installed between the two ends of the main shaft (3) and the inner wall of the housing (1). A distribution ring is installed between the middle of the main shaft (3) and the inner wall of the housing (1). 7) The upper and lower ends of the distribution ring (7) are provided with liquid outlets (71), the inner wall of the distribution ring (7) is provided with liquid inlet (72), the side wall of the hydraulic motor (2) is provided with lubricating oil inlet (21), the side wall of the housing (1) is provided with lubricating oil return outlet (22), and the lubricating oil inlet (21) is connected to the hydraulic motor (2), main shaft (3), distribution ring (7), first bearing (5), second bearing (6) and lubricating oil return outlet (22) through the lubricating oil channel.

2. The self-lubricating wet drill box according to claim 1, characterized in that: The lubricating oil channels include a channel 1 (23) in the hydraulic motor (2) and a channel 2 (31) in the main shaft (3). The channel 1 (23) and the channel 2 (31) are connected. The channel 2 (31) is connected to the inlet (72). The housing (1) has a channel 3 (11) that connects to the outward side of the first bearing (5) and the second bearing (6). The channel 1 (23) is connected to the lubricating oil inlet (21). The channel 3 (11) is connected to the lubricating oil return outlet (22). The first bearing (5) and the second bearing (6) are connected to the distribution ring (7). The channel 4 (8) is provided between the first bearing (5) and the second bearing (6).

3. The self-lubricating wet drill box according to claim 1, characterized in that: Oil seal 1 (9) is provided between the upper and lower ends of the distribution ring (7) and the inner wall of the housing (1) and the main shaft (3).

4. The self-lubricating wet drill box according to claim 1, characterized in that: The inner wall of the distribution ring (7) is provided with an annular liquid inlet (72).

5. A self-lubricating wet drill box according to claim 1, characterized in that: The upper and lower ends of the distribution ring (7) are provided with a number of liquid outlets (71), and the box body (1) is provided with a number of channels (8) corresponding to the liquid outlets (71).

6. A self-lubricating wet drill box according to claim 1, characterized in that: A wear-resistant sleeve (10) is provided between the distribution ring (7) and the main shaft (3).

7. A self-lubricating wet drill box according to claim 1, characterized in that: Oil seals (12) are provided between the two ends of the housing (1) and the main shaft (3).

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