A mud and water proof structure suitable for various states of power head

Abstract

The present invention relates to a mud and water proof structure suitable for a power head in various states, which includes a driving sleeve, a mud proof outer ring, a connecting flange, an upper oil seal box, an upper oil seal, a power housing and a transmission sleeve, wherein the lower flange surface of the driving sleeve is connected to the upper flange surface of the connecting flange, and the outer side surface of the driving sleeve is connected to the mud proof outer ring, and the lower flange surface of the connecting flange is connected to the upper flange surface of the transmission sleeve, and a mud proof inner ring is arranged in the space formed by the driving sleeve, the connecting flange, the mud proof outer ring and the transmission sleeve, and the mud proof inner ring is connected to the upper flange surface of the upper oil seal box, the lower flange surface of the upper oil seal box is connected to the power housing, and the inner side surface of the upper oil seal box is connected to the upper oil seal, and the upper oil seal contacts the transmission sleeve to form a seal. The present invention can effectively prevent mud, rainwater, etc. from entering the power housing in both the working state and the transportation state of the rotary drilling rig power head through a simple structural design, thereby effectively protecting the power head from long-term good operation.

Description

Technical Field

[0001] The invention relates to a mud and water intrusion prevention structure, in particular to a mud and water intrusion prevention structure suitable for a power head in various states. Background Art

[0002] At present, rotary drilling rigs are used as a pile-drilling equipment mainly in foundation construction of various types of buildings, bridges, subways, etc. The power head is the working device of the rotary drilling rig, and its quality and reliability are particularly important.

[0003] In the construction conditions of rotary drilling rigs, mud media is mostly used, and the drilling rig construction will frequently carry out the drill rod lifting and lowering action. In this process, the power head is in a vertical state, and the drill rod will bring out the mud in the hole and drip it on the power head. Over time, it will accumulate and cause the mud to enter the power head box, polluting the lubricating oil inside the box, resulting in early gear wear, bearing jamming and other faults in the box transmission mechanism.

[0004] Some operators will use high-pressure water guns to flush mud when they see it accumulate. During this process, mud and sewage will also enter the power head box.

[0005] When the drilling rig is in the transport state, the power head is in a horizontal state. When it rains, rainwater will also enter the power head box without special structural design.

[0006] At present, most power heads on the market have no anti-mud ring or only have the outermost anti-mud steel ring. After the mud accumulates, sewage can easily enter the power head box and contaminate the lubricating oil. A small number of power heads are designed with inner anti-mud steel rings, but no special structural design is performed. When the power head is flushed with a high-pressure water gun or when it is in a transport state on rainy days, sewage can easily enter the power head box. A small number of power heads are designed with outer protective seals, but due to the harsh environment and lack of lubrication, they are easily damaged, thereby reducing the anti-mud and waterproof effect. Summary of the invention

[0007] In view of the above problems, the present invention provides a mud and water prevention structure suitable for various states of the power head, which can effectively prevent mud, rainwater, etc. from entering the power box in both working and transport states.

[0008] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a mud and water proof structure suitable for various states of a power head, comprising a driving sleeve, a mud proof outer ring, a connecting flange, an upper oil seal box, an upper oil seal, a power housing and a transmission sleeve, the lower flange surface of the driving sleeve is connected to the upper flange surface of the connecting flange, and the outer side surface of the driving sleeve is connected to the mud proof outer ring, the lower flange surface of the connecting flange is connected to the upper flange surface of the transmission sleeve, a mud proof inner ring is provided in the space formed by the driving sleeve, the connecting flange, the mud proof outer ring and the transmission sleeve, the mud proof inner ring is connected to the upper flange surface of the upper oil seal box, the lower flange surface of the upper oil seal box is connected to the power housing, and the inner side surface of the upper oil seal box is connected to the upper oil seal, and the upper oil seal contacts the transmission sleeve to form a seal.

[0009] Preferably, a waterproof boss is provided in the accommodation space of the upper oil seal box, the mud-proof inner ring and the mud-proof outer ring, the inner side surface of the waterproof boss is connected to the upper oil seal box, and the upper end surface of the waterproof boss is connected to the mud-proof inner ring.

[0010] Preferably, the mud-proof inner ring comprises a transverse inner ring and a longitudinal inner ring which are connected in a T-shape or L-shape, the transverse inner ring is fixedly connected to the upper flange surface of the upper oil seal box, and the longitudinal inner ring is parallel to the mud-proof outer ring.

[0011] Preferably, when the mud-proof inner ring is T-shaped, the lower end surface of the longitudinal inner ring is lower than the upper flange surface of the upper oil seal box, and the outer side surface of the waterproof boss is connected to the inner side surface of the longitudinal inner ring.

[0012] Preferably, when the mud-proof inner ring is L-shaped, the lower end surface of the longitudinal inner ring and the upper flange surface of the upper oil seal box are located on the same horizontal line, and the outer side surface of the waterproof boss and the outer side surface of the longitudinal inner ring are located on the same horizontal line.

[0013] Preferably, the anti-mud inner ring is arranged between the anti-mud outer ring and the connecting flange.

[0014] Preferably, the longitudinal diameter of the mud-proof outer ring is greater than the longitudinal diameter of the longitudinal inner ring.

[0015] Preferably, the length of the longitudinal diameter of the longitudinal inner ring is greater than the length of the outer side surface of the connecting flange.

[0016] Preferably, the lower end surface of the mud-proof outer ring is lower than the lower end surface of the longitudinal inner ring.

[0017] Preferably, the lower flange surface of the driving sleeve is fixedly connected to the upper flange surface of the connecting flange by bolt one, the lower flange surface of the connecting flange is fixedly connected to the upper flange surface of the transmission sleeve by bolt two, the transverse inner ring is fixedly connected to the upper flange surface of the upper oil seal box by bolt three, and the lower flange surface of the upper oil seal box is fixedly connected to the upper flange surface of the power box by bolt four.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention designs two layers of mud-proof inner ring and mud-proof outer ring respectively between the driving sleeve rotating at the upper end of the power head and the fixed power box body, and the mud-proof inner ring and mud-proof outer ring are both mud-proof steel rings, the mud-proof inner ring is fixedly connected to the power box body, and the mud-proof outer ring is fixedly connected to the driving sleeve. In the construction state, when mud accumulates on the box body, the inner and outer mud-proof steel rings can effectively prevent mud from entering the inside of the power box body;

[0020] 2. The present invention performs a first water-repellent boss design by making the lower end surface of the mud-proof outer ring lower than the lower end surface of the longitudinal inner ring in the mud-proof inner ring, and then performs a second water-repellent boss design through the waterproof boss, thereby performing a double water-repellent boss design through the mud-proof inner ring at the same time. When the outside world uses a high-pressure water gun to clean the power head with mud, the double water-repellent boss design can effectively ensure that the flushing sewage will not enter the inside of the box along the outer side of the mud-proof inner ring; at the same time, it can also ensure that when the power head is in a transport state, rainwater will not enter the inside of the power box and pollute the lubricating oil, thereby ensuring the cleanliness of the lubricating oil inside the box and effectively extending the service life of the power head;

[0021] 3. The present invention forms a seal by contacting the upper oil seal with the transmission sleeve without adding various types of seals, and then through a simple structural design, the rotary drilling rig power head can effectively prevent mud, rainwater, etc. from entering the power box in both the working state and the transportation state;

[0022] 4. The present invention has low cost, high reliability and strong practicability, and can effectively protect the power head to operate well for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention in the transport state;

[0024] Figure 2 It is a structural schematic diagram of the present invention in working state;

[0025] Figure 3 for Figure 2 Enlarged schematic diagram at point A in the middle. DETAILED DESCRIPTION

[0026] The following will be combined Figure 1-3 The present invention is described in detail. The exemplary embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0027] A mud and water proof structure suitable for various states of a power head, comprising a drive sleeve 1, a mud proof outer ring 4, a connecting flange 5, an upper oil seal box 8, an upper oil seal 9, a power housing 11 and a transmission sleeve 12, wherein the lower flange surface of the drive sleeve is fixedly connected to the upper flange surface of the connecting flange by bolts 2, and the outer side surface of the drive sleeve is connected to the mud proof outer ring, the lower flange surface of the connecting flange is fixedly connected to the upper flange surface of the transmission sleeve by bolts 3, and a mud proof inner ring 6 is arranged in the space formed by the drive sleeve, the connecting flange, the mud proof outer ring and the transmission sleeve, and the specific mud proof inner ring is arranged on the mud proof outer ring The mud-proof inner ring is connected to the upper flange surface of the upper oil seal box, the lower flange surface of the upper oil seal box is fixedly connected to the upper flange surface of the power box by bolts 10, and the inner side surface of the upper oil seal box is connected to the upper oil seal, the upper oil seal contacts with the transmission sleeve to form a seal, and a waterproof boss 14 is provided in the accommodating space of the upper oil seal box, the mud-proof inner ring and the mud-proof outer ring, the inner side surface of the waterproof boss is connected to the upper oil seal box, and the upper end surface of the waterproof boss is connected to the mud-proof inner ring. Preferably, the mud-proof inner ring, mud-proof outer ring and waterproof boss are all steel structures with good durability.

[0028] The mud-proof inner ring includes a transverse inner ring and a longitudinal inner ring which are connected in a T-shape or an L-shape. The transverse inner ring is fixedly connected to the upper flange surface of the upper oil seal box by bolt three 7. The longitudinal inner ring is parallel to the mud-proof outer ring. The length of the longitudinal diameter of the mud-proof outer ring is greater than the length of the longitudinal diameter of the longitudinal inner ring. The length of the longitudinal diameter of the longitudinal inner ring is greater than the length of the outer side surface of the connecting flange. The lower end surface of the mud-proof outer ring is lower than the lower end surface of the longitudinal inner ring.

[0029] When the mud-proof inner ring is T-shaped, the lower end surface of the longitudinal inner ring is lower than the upper flange surface of the upper oil seal box, and the outer side surface of the waterproof boss is connected to the inner side surface of the longitudinal inner ring.

[0030] When the mud-proof inner ring is L-shaped, the lower end surface of the longitudinal inner ring and the upper flange surface of the upper oil seal box are located on the same horizontal line, and the outer side surface of the waterproof boss and the outer side surface of the longitudinal inner ring are located on the same horizontal line.

[0031] During the implementation process, the mud and water prevention structure 13 of this scheme is specifically connected by bolt 1 to fix the lower flange surface of the driving sleeve and the upper flange surface of the connecting flange, bolt 2 to fix the lower flange surface of the connecting flange and the upper flange surface of the transmission sleeve, bolt 3 to fix the mud prevention inner ring and the upper flange surface of the upper oil seal box, bolt 4 to fix the lower flange surface of the upper oil seal box and the upper flange surface of the power box, and then through the installation of the mud prevention outer ring and the upper oil seal, without adding various types of seals, the upper oil seal and the transmission sleeve are in contact to form a seal, and secondly, the length of the longitudinal diameter of the mud prevention outer ring is greater than the length of the longitudinal diameter of the longitudinal inner ring, and the longitudinal diameter of the longitudinal inner ring is greater than the longitudinal diameter of the longitudinal inner ring. The length of the diameter is greater than the length of the outer side of the connecting flange, and the lower end surface of the mud-proof outer ring is lower than the lower end surface of the longitudinal inner ring. The special structural design realizes the first level of water return, and then connects with the longitudinal inner ring through the waterproof boss, so that the waterproof boss and the longitudinal inner ring are always in the same horizontal plane, thereby realizing the second level of water return. Because the rotary drilling rig basically works outdoors, or is exposed to the sun or rain, due to the characteristics of rotation, when it is washed with a high-pressure water gun, due to the high pressure of the high-pressure water gun, mud or water will enter the power box. In the prior art, the sealing ring for mud prevention rotates relatively, without lubrication, and the sealing ring is made of plastic. In various outdoor environments It is easy to wear and has a very short lifespan. There are also mud-proof outer ring structures on the market, but there is a gap between the mud-proof outer ring and the power box, and mud and water will still penetrate into the power box, especially during transportation, the power head is fallen down, and rainwater will penetrate into the power box. In this solution, the mud-proof inner ring, mud-proof outer ring and waterproof boss are all made of steel structure. The special structural design, when mud accumulates on the box during construction, the inner and outer layers of mud-proof steel rings can effectively prevent mud from entering the power box, and then the waterproof boss connected to the mud-proof inner ring is simultaneously designed with a double anti-water boss, and the anti- The lower end face of the mud outer ring is lower than the lower end face of the longitudinal inner ring in the mud-proof inner ring. The mud-proof inner ring is connected to the waterproof boss. The lower end face of the waterproof boss is lower than the upper end face of the oiling seal box. Therefore, the lower end face of the whole connected between the mud-proof inner ring and the waterproof boss is lower than the upper end face of the oiling seal box. When the outside world uses a high-pressure water gun to clean the power head with mud, the double water-repellent boss design can effectively ensure that the flushing sewage will not enter the power box along the outer side of the mud-proof inner ring; at the same time, it can also ensure that when the power head is in the transportation state, rainwater will not enter the power box and contaminate the lubricating oil. Ensuring the cleanliness of the lubricating oil inside the box can effectively extend the service life of the power head.

[0032] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A mud and water prevention structure suitable for a power head in various states, characterized by: The invention comprises a driving sleeve (1), an anti-mud outer ring (4), a connecting flange (5), an upper oil seal box (8), an upper oil seal (9), a power housing (11) and a transmission sleeve (12), wherein the lower flange surface of the driving sleeve is connected to the upper flange surface of the connecting flange, and the outer side surface of the driving sleeve is connected to the anti-mud outer ring, the lower flange surface of the connecting flange is connected to the upper flange surface of the transmission sleeve, a anti-mud inner ring (6) is arranged in a space formed by the driving sleeve, the connecting flange, the anti-mud outer ring and the transmission sleeve, the anti-mud inner ring is connected to the upper flange surface of the upper oil seal box, the lower flange surface of the upper oil seal box is connected to the power housing, and the inner side surface of the upper oil seal box is connected to the upper oil seal, the upper oil seal contacts the transmission sleeve to form a seal, and the transmission sleeve is sealed. A waterproof boss (14) is provided in the accommodation space of the upper oil seal box, the mud-proof inner ring and the mud-proof outer ring, the inner side surface of the waterproof boss is connected to the upper oil seal box, the upper end surface of the waterproof boss is connected to the mud-proof inner ring, the mud-proof inner ring comprises a transverse inner ring and a longitudinal inner ring which are connected in a T-shape or an L-shape, the transverse inner ring is fixedly connected to the upper flange surface of the upper oil seal box, the longitudinal inner ring is parallel to the mud-proof outer ring, the mud-proof inner ring is provided between the mud-proof outer ring and the connecting flange, the length of the longitudinal diameter of the mud-proof outer ring is greater than the length of the longitudinal diameter of the longitudinal inner ring, the length of the longitudinal diameter of the longitudinal inner ring is greater than the length of the outer side surface of the connecting flange, and the lower end surface of the mud-proof outer ring is lower than the lower end surface of the longitudinal inner ring.

2. The anti-mud and water structure applicable to various states of the power head according to claim 1, characterized in that: When the mud-proof inner ring is T-shaped, the lower end surface of the longitudinal inner ring is lower than the upper flange surface of the upper oil seal box, and the outer side surface of the waterproof boss is connected to the inner side surface of the longitudinal inner ring.

3. The mud and water proof structure applicable to various states of the power head according to claim 1, characterized in that: When the mud-proof inner ring is L-shaped, the lower end surface of the longitudinal inner ring and the upper flange surface of the upper oil seal box are located on the same horizontal line, and the outer side surface of the waterproof boss and the outer side surface of the longitudinal inner ring are located on the same horizontal line.

4. The mud and water proof structure applicable to various states of the power head according to claim 1, characterized in that: The lower flange surface of the driving sleeve is fixedly connected to the upper flange surface of the connecting flange by bolt one (2), the lower flange surface of the connecting flange is fixedly connected to the upper flange surface of the transmission sleeve by bolt two (3), the transverse inner ring is fixedly connected to the upper flange surface of the upper oil seal box by bolt three (7), and the lower flange surface of the upper oil seal box is fixedly connected to the upper flange surface of the power box by bolt four (10).

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