Sealing device for box body of rotary drilling rig

Abstract

The utility model discloses a rotary drilling rig box body sealing device which comprises a lower box body, the upper surface of the lower box body is fixedly connected with a lower sealing seat, an upper sealing seat is arranged above the lower sealing seat, the upper surface of the upper sealing seat is fixedly connected with an upper box body, the upper surface of the lower sealing seat is provided with an annular groove, and the lower surface of the lower sealing seat is provided with a lower sealing seat. A sealing gasket is fixedly connected to the inner bottom wall of the annular groove, a sealing ring is fixedly connected to the bottom face of the upper sealing seat, the bottom end of the sealing ring is in close contact with the upper surface of the sealing gasket, a plurality of threaded grooves are formed in the upper surface of the lower sealing seat, a plurality of threaded holes are formed in the upper surface of the upper sealing seat, and the threaded grooves are communicated with the threaded holes. The inner walls of the two threaded holes are in threaded connection with fixing screws. According to the sealing device, the upper sealing seat and the lower sealing seat can be firmly sealed, the sealing effect between the upper box body and the lower box body is enhanced, then firm sealing can be carried out through the sealing device, and stains entering the box body of the rotary drilling rig are reduced.

Description

Technical Field

[0001] The utility model relates to the field of rotary drilling rigs, in particular to a sealing device for the rotary drilling rig box body. Background Technique

[0002] A rotary drilling rig is a basic construction equipment, which is mainly used for the construction of pile foundations in construction projects. During operation, a bucket-type drill bit with a valve at the bottom rotates to break rock and soil, and directly loads it into the drill bucket. Then, the drill bit is lifted to the ground to unload the rock and soil. Such cyclic operation continuously drills to form a pile hole. Compared with traditional drilling equipment, the rotary drilling rig has a fast drilling speed, high work efficiency, and can adapt to various strata, such as cohesive soil, sandy soil, pebbles, etc., and is widely used in the construction of pile foundations for large buildings, bridges, etc.

[0003] The power head box body is an important mechanism of the rotary drilling rig. The power head box needs to install driving and transmission components inside it. However, when the current rotary drilling rig box bodies are connected, it is difficult to achieve firm sealing, and then it is easy for stains to enter, which will affect the subsequent normal operation of the rotary drilling rig box body. Therefore, we propose a sealing device for the rotary drilling rig box body to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a sealing device for the rotary drilling rig box body to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] The sealing device for the rotary drilling rig box body includes a lower box body. The upper surface of the lower box body is fixedly connected with a lower sealing seat. An upper sealing seat is arranged above the lower sealing seat. The upper surface of the upper sealing seat is fixedly connected with an upper box body. The upper surface of the lower sealing seat is provided with an annular groove. The inner bottom wall of the annular groove is fixedly connected with a sealing pad. The bottom surface of the upper sealing seat is fixedly connected with a sealing ring. The bottom end of the sealing ring is in close contact with the upper surface of the sealing pad. The upper surface of the lower sealing seat is provided with a plurality of threaded grooves. The upper surface of the upper sealing seat is provided with a plurality of threaded holes. The inner walls of two of the threaded holes are both threadedly connected with fixing screws. The mutually remote side surfaces of the upper box body and the lower box body are both fixedly connected with threaded connection rings. The outer surfaces of the two threaded connection rings are both threadedly connected with sealing covers.

[0007] In a further embodiment, anti-mud steel rings are fixedly connected to the inner circles of the two sealing covers, and VR rubber rings are fixedly connected to the inner circles of the two sealing covers.

[0008] In a further embodiment, two positioning holes are provided on the upper surfaces of the two upper sealing seats, and two positioning rods are fixedly connected to the upper surface of the lower sealing seat. The tops of the two positioning rods penetrate through the positioning holes and extend above the positioning holes.

[0009] In a further embodiment, threads are provided on the outer surface of the positioning rod, and a threaded protective ring is threadedly connected to the outer surface of the positioning rod.

[0010] In a further embodiment, two concave holes are provided on the outer surface of the upper box body, and rotating plates are fixedly connected to the outer surfaces of the two sealing covers.

[0011] In a further embodiment, the bottoms of the two fixing screws extend into the interiors of the two threaded grooves respectively, and the outer surfaces of the two fixing screws are threadedly connected to the inner walls of the two threaded grooves respectively.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, through the arrangement of the positioning holes and the positioning rods, the positioning function is achieved when the upper box body and the lower box body are connected, which is convenient for their combined connection. Through the annular groove provided on the lower sealing seat and the cooperation with the sealing ring at the bottom of the upper sealing seat, the upper sealing seat and the lower sealing seat can be firmly sealed, thereby enhancing the sealing effect between the upper box body and the lower box body. Then, through this sealing device, firm sealing can be carried out, reducing the entry of stains into the rotary drilling rig box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the front view of the rotary drilling rig box body sealing device.

[0015] Figure 2 It is a cross-sectional view of the front view of the rotary drilling rig box body sealing device.

[0016] Figure 3 It is a cross-sectional view of the front view of the lower sealing seat in the rotary drilling rig box body sealing device.

[0017] Figure 4 It is a cross-sectional view of the front view of the sealing cover in the rotary drilling rig box body sealing device.

[0018] In the figure: 1, lower box body; 2, lower sealing seat; 3, upper sealing seat; 4, upper box body; 5, sealing cover; 6, threaded groove; 7, threaded hole; 8, fixing screw; 9, annular groove; 10, sealing gasket; 11, sealing ring; 12, positioning hole; 13, positioning rod; 14, threaded protective ring; 15, concave hole; 16, rotating plate; 17, VR rubber ring; 18, anti-mud steel ring; 19, threaded connection ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0021] Please refer to Figures 1-4 , in the present utility model, a rotary drilling rig box body sealing device includes a lower box body 1. The upper surface of the lower box body 1 is fixedly connected with a lower sealing seat 2. An upper sealing seat 3 is arranged above the lower sealing seat 2. The upper surface of the upper sealing seat 3 is fixedly connected with an upper box body 4. An annular groove 9 is formed in the upper surface of the lower sealing seat 2. A sealing gasket 10 is fixedly connected to the inner bottom wall of the annular groove 9. A sealing ring 11 is fixedly connected to the bottom surface of the upper sealing seat 3. The bottom end of the sealing ring 11 is in close contact with the upper surface of the sealing gasket 10. A plurality of threaded grooves 6 are formed in the upper surface of the lower sealing seat 2. A plurality of threaded holes 7 are formed in the upper surface of the upper sealing seat 3. The inner walls of two threaded holes 7 are both threadedly connected with fixing screws 8. The bottom ends of the two fixing screws 8 respectively extend into the interiors of the two threaded grooves 6. The outer surfaces of the two fixing screws 8 are respectively threadedly connected with the inner walls of the two threaded grooves 6. Threaded connection rings 19 are fixedly connected to the mutually remote side surfaces of the upper box body 4 and the lower box body 1. Sealing covers 5 are threadedly connected to the outer surfaces of the two threaded connection rings 19. Through the arrangement of the fixing screws 8, the fixing screws 8 can be inserted into the threaded grooves 6, so that the upper sealing seat 3 and the lower sealing seat 2 can be firmly connected, and the lower box body 1 and the upper box body 4 can be firmly connected and sealed.

[0022] In a further embodiment, anti-mud steel rings 18 are fixedly connected to the inner circles of both sealing covers 5, VR rubber rings 17 are fixedly connected to the inner circles of both sealing covers 5, two positioning holes 12 are formed in the upper surfaces of both upper sealing seats 3, two positioning rods 13 are fixedly connected to the upper surface of the lower sealing seat 2, the tops of the two positioning rods 13 penetrate through the positioning holes 12 and extend above the positioning holes 12. Through the arrangement of the anti-mud steel rings 18 and the VR rubber rings 17, the drive shafts and transmission shafts of the drive assembly or the transmission assembly can be sealed, improving the sealing effect thereof. By utilizing the cooperation of the positioning holes 12 and the positioning rods 13, the sealing between the upper box body 4 and the lower box body 1 is achieved, and the firm sealing between the two will be realized.

[0023] In a further embodiment, threads are formed on the outer surface of the positioning rod 13, and a threaded protective ring 14 is threadedly connected to the outer surface of the positioning rod 13. Two concave holes 15 are formed in the outer surface of the upper box body 4, and rotary plates 16 are fixedly connected to the outer surfaces of both sealing covers 5. Through the arrangement of the threaded protective ring 14, the sealing effect when the positioning hole 12 and the positioning rod 13 are connected is achieved, reducing the entry of water and sludge. Through the arrangement of the rotary plates 16, the installation of the sealing covers 5 is facilitated. By utilizing the arrangement of the two concave holes 15, the flexibility of installing the upper box body 4 is improved.

[0024] The working principle of the present utility model is as follows: When sealing between the lower box body 1 and the upper box body 4, first, the upper box body 4 is taken, and the two positioning holes 12 are located above the positioning rods 13. Then, the upper box body 4 is placed downward, enabling the positioning rods 13 to be inserted into the positioning holes 12. At the same time, the sealing ring 11 is also driven to be inserted into the annular groove 9. Then, the fixing screws 8 are taken and inserted into the threaded grooves 6, firmly connecting the upper sealing seat 3 and the lower sealing seat 2, and then the sealing between the lower box body 1 and the upper box body 4 can be achieved.

[0025] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0026] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Rotary drilling rig box sealing device, characterized in that: It includes a lower box body (1), the upper surface of the lower box body (1) is fixedly connected with a lower sealing seat (2), an upper sealing seat (3) is arranged above the lower sealing seat (2), the upper surface of the upper sealing seat (3) is fixedly connected with an upper box body (4), an annular groove (9) is formed in the upper surface of the lower sealing seat (2), a sealing gasket (10) is fixedly connected to the inner bottom wall of the annular groove (9), a sealing ring (11) is fixedly connected to the bottom surface of the upper sealing seat (3), the bottom end of the sealing ring (11) is in close contact with the upper surface of the sealing gasket (10), a plurality of threaded grooves (6) are formed in the upper surface of the lower sealing seat (2), a plurality of threaded holes (7) are formed in the upper surface of the upper sealing seat (3), fixing screws (8) are threadedly connected to the inner walls of the two threaded holes (7), threaded connection rings (19) are fixedly connected to the mutually remote side surfaces of the upper box body (4) and the lower box body (1), and sealing covers (5) are threadedly connected to the outer surfaces of the two threaded connection rings (19).

2. The rotary drilling rig box body sealing device according to claim 1, characterized in that: Anti-mud steel rings (18) are fixedly connected to the inner circles of the two sealing covers (5), and VR rubber rings (17) are fixedly connected to the inner circles of the two sealing covers (5).

3. The rotary drilling rig box sealing device according to claim 1, characterized in that: Two positioning holes (12) are formed in the upper surfaces of the two upper sealing seats (3), two positioning rods (13) are fixedly connected to the upper surface of the lower sealing seat (2), and the top ends of the two positioning rods (13) penetrate through the positioning holes (12) and extend above the positioning holes (12).

4. The rotary drilling rig box sealing device according to claim 3, wherein: Threads are formed on the outer surface of the positioning rod (13), and a threaded protective ring (14) is threadedly connected to the outer surface of the positioning rod (13).

5. The rotary drilling box sealing device according to claim 1, characterized in that: Two concave holes (15) are formed in the outer surface of the upper box body (4), and rotating plates (16) are fixedly connected to the outer surfaces of the two sealing covers (5).

6. The sealed device for the rotary drilling box body according to claim 1, characterized in that: The bottom ends of the two fixing screws (8) respectively extend into the two threaded grooves (6), and the outer surfaces of the two fixing screws (8) are respectively threadedly connected to the inner walls of the two threaded grooves (6).

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