Brake nitrogen spring of petroleum drilling machine

Abstract

The utility model discloses a petroleum drilling machine brake nitrogen spring, which relates to the technical field of petroleum drilling machine brake and comprises a fixed seat, nitrogen springs are arranged on the upper side and the lower side of the fixed seat, an inflation valve is arranged at one end of each nitrogen spring, an oil inlet valve is arranged on the outer ring side of the other end of each nitrogen spring, and a sliding rod is arranged on the inner side of each nitrogen spring. A pushing ring is arranged at one end of the sliding rod, oil seal rings are arranged on the outer ring side of the pushing ring, a guide ring is arranged between the oil seal rings, and a friction plate is arranged at the other end of the pushing ring. By means of the friction plate and the friction groove, when the friction plate is used, the heat dissipation area can be increased through the friction groove, the friction performance is further improved, and the braking effect of the friction plate is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling rig brakes, in particular to an oil drilling rig brake nitrogen spring. Background Art

[0002] During the drilling process, the oil rig needs to perform high-frequency drilling rod lifting and rotation operations. In order to ensure the safety and stability of the operation, the brake device plays an important role in the drilling rig. The brake device is used to control the main power system of the drilling rig to ensure that the drilling rig stops in time in the event of shutdown or emergency.

[0003] When the existing brake structure is in use, the heat dissipation effect of the friction plate is general, which affects the friction performance of the friction plate, and further affects the braking effect. At the same time, when the existing brake structure is in use, the push of the friction plate during braking requires external power. When a fault occurs and external power cannot be provided, the brake disc cannot be braked in time, affecting the braking effect. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a nitrogen spring for oil drilling rig brakes. By setting a friction plate and a friction groove, when the friction plate is in use, the friction groove can increase the heat dissipation area, thereby improving the friction performance and ensuring the braking effect of the friction plate, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nitrogen spring for oil drilling rig brakes, comprising a fixed seat, nitrogen springs are arranged on the upper and lower sides of the fixed seat, an inflation valve is arranged at one end of the nitrogen spring, an oil inlet valve is arranged on the outer ring side of the other end of the nitrogen spring, a sliding rod is arranged on the inner side of the nitrogen spring, a pushing ring is arranged at one end of the sliding rod, an oil sealing ring is arranged on the outer ring side of the pushing ring, a guide ring is arranged between the oil sealing rings, a friction plate is arranged at the other end of the pushing ring, a friction groove is arranged on the side of the friction plate away from the sliding rod, a brake disc is arranged between the friction plates, a heat dissipation groove is arranged in the middle of the brake disc, and heat dissipation holes are arranged on the upper and lower sides of the brake disc.

[0006] Furthermore, a drill rod is arranged at the center of the brake disc, and a dustproof ring is arranged at one end of the nitrogen spring away from the inflation valve.

[0007] Furthermore, the nitrogen spring is connected to the fixing seat via bolts, and the brake disc is welded to the drill rod.

[0008] Furthermore, the inflation valve and the oil inlet valve are both connected to the nitrogen spring via threads, and the dustproof ring is connected to the nitrogen spring via bolts.

[0009] Furthermore, the oil seal ring is connected to the push ring via a groove, and the guide ring is interference connected to the push ring.

[0010] Furthermore, the sliding rod is connected to the friction plate by bolts, and the distance between the friction plate and the brake disc is 5 mm.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model provides a friction plate and a friction groove, so that when the friction plate is in use, the friction groove can increase the heat dissipation area, thereby improving the friction performance and ensuring the braking effect of the friction plate.

[0013] 2. The utility model has a nitrogen spring, a sliding rod, a push ring, an oil seal ring, a guide ring, a charging valve, a dustproof ring and an oil inlet valve. When the brake structure is in use, the hydraulic oil enters the nitrogen spring through the oil inlet valve, and pushes the push ring to the side of the charging valve, so that the high-pressure nitrogen between the push ring and the charging valve is compressed, thereby separating the friction plate from the brake disc. When encountering an external power failure, it is only necessary to open the oil inlet valve so that the high-pressure nitrogen can push the push ring to the side of the brake disc, so that the friction plate contacts the brake disc, thereby ensuring the braking effect in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the main cross-sectional structure of the fixing seat and the nitrogen spring in the utility model;

[0016] Figure 3 It is a bottom view structural schematic diagram of the friction plate in the utility model.

[0017] In the figure: 1. drill rod; 2. brake disc; 3. nitrogen spring; 4. charging valve; 5. oil inlet valve; 6. heat dissipation groove; 7. fixing seat; 8. oil seal ring; 9. guide ring; 10. friction plate; 11. sliding rod; 12. dustproof ring; 13. push ring; 14. heat dissipation hole; 15. friction groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3The present embodiment provides a technical solution: a nitrogen spring for oil drilling rig brake, comprising a fixing seat 7, nitrogen springs 3 are arranged on the upper and lower sides of the fixing seat 7, a charging valve 4 is arranged at one end of the nitrogen spring 3, an oil inlet valve 5 is arranged on the outer ring side of the other end of the nitrogen spring 3, a sliding rod 11 is arranged on the inner side of the nitrogen spring 3, a pushing ring 13 is arranged at one end of the sliding rod 11, an oil sealing ring 8 is arranged on the outer ring side of the pushing ring 13, a guide ring 9 is arranged between the oil sealing rings 8, a friction plate 10 is arranged on the other end of the pushing ring 13, a friction groove 15 is arranged on the side of the friction plate 10 away from the sliding rod 11, a brake disc 2 is arranged between the friction plates 10, a heat dissipation groove 6 is arranged in the middle of the brake disc 2, and heat dissipation holes 14 are arranged on the upper and lower sides of the brake disc 2.

[0020] like Figure 1-3 As shown, the heat dissipation groove 6 and the heat dissipation hole 14 can improve the heat dissipation effect of the brake disc 2, thereby ensuring the braking effect of the brake disc 2. The high-pressure nitrogen between the push ring 13 and the inflation valve 4 can push the push ring 13 to the side of the friction plate 10, thereby making the friction plate 10 contact with the brake disc 2 to perform braking.

[0021] A drill rod 1 is arranged at the center of the brake disc 2, and a dustproof ring 12 is arranged at one end of the nitrogen spring 3 away from the inflation valve 4.

[0022] like Figure 1-3 As shown, when the drill rod 1 rotates, it can drive the brake disc 2 to rotate. When braking, the friction plate 10 can clamp and brake the brake disc 2, thereby stopping the drill rod 1 from rotating.

[0023] The nitrogen spring 3 is connected to the fixing seat 7 by bolts, and the brake disc 2 is welded to the drill rod 1.

[0024] The charging valve 4 and the oil inlet valve 5 are both connected to the nitrogen spring 3 through threads, and the dustproof ring 12 is connected to the nitrogen spring 3 through bolts.

[0025] like Figure 1-3 As shown, the charging valve 4 allows nitrogen to be charged into the inner side of the nitrogen spring 3 , and the dustproof ring 12 can perform dustproof treatment on one end of the nitrogen spring 3 .

[0026] The oil seal ring 8 is connected to the push ring 13 through a groove, and the guide ring 9 is connected to the push ring 13 through an interference fit.

[0027] like Figure 1-3 As shown, the oil seal ring 8 can improve the sealing effect between the push ring 13 and the inner side of the nitrogen spring 3 to prevent the hydraulic oil from leaking to the side of the charging valve 4.

[0028] The sliding rod 11 is connected to the friction plate 10 by bolts, and the distance between the friction plate 10 and the brake disc 2 is 5 mm.

[0029] The working principle of the oil drilling rig brake nitrogen spring provided by the utility model is as follows: Figure 1-Figure 3 As shown, when in use, the fixing seat 7 is fixed on the support frame of the oil drilling rig, and the drill rod 1 drives the brake disc 2 to rotate when it is running. When braking is needed, the oil inlet valve 5 is opened, so that the push ring 13 in the nitrogen spring 3 moves toward the side of the friction plate 10 under the action of high-pressure nitrogen, and then the hydraulic oil is pushed out from the nitrogen spring 3, so that the friction plate 10 is pressed against the brake disc 2, so that the brake disc 2 is braked and the braking effect of the brake disc 2 is ensured. When there is no external power, the high-pressure nitrogen can also ensure the braking effect of the brake disc 2. The friction groove 15 on the friction plate 10 can increase the heat dissipation area, thereby ensuring the heat dissipation effect of the friction plate 10.

[0030] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A brake nitrogen spring for an oil drilling rig, comprising a fixing seat (7), characterized in that: A nitrogen spring (3) is provided on the upper and lower sides of the fixing seat (7), a charging valve (4) is provided at one end of the nitrogen spring (3), an oil inlet valve (5) is provided on the outer ring side of the other end of the nitrogen spring (3), a sliding rod (11) is provided on the inner side of the nitrogen spring (3), a pushing ring (13) is provided at one end of the sliding rod (11), an oil seal ring (8) is provided on the outer ring side of the pushing ring (13), a guide ring (9) is provided between the oil seal rings (8), a friction plate (10) is provided at the other end of the pushing ring (13), a friction groove (15) is provided on a side of the friction plate (10) away from the sliding rod (11), a brake disc (2) is provided between the friction plates (10), a heat dissipation groove (6) is provided in the middle of the brake disc (2), and heat dissipation holes (14) are provided on the upper and lower sides of the brake disc (2).

2. The oil drilling rig brake nitrogen spring according to claim 1, characterized in that: A drill rod (1) is arranged at the center of the brake disc (2), and a dustproof ring (12) is arranged at one end of the nitrogen spring (3) away from the inflation valve (4).

3. The oil drilling rig brake nitrogen spring according to claim 2, characterized in that: The nitrogen spring (3) is connected to the fixing seat (7) via bolts, and the brake disc (2) is welded to the drill rod (1).

4. The oil drilling rig brake nitrogen spring according to claim 2, characterized in that: The inflation valve (4) and the oil inlet valve (5) are both connected to the nitrogen spring (3) via threads, and the dustproof ring (12) is connected to the nitrogen spring (3) via bolts.

5. The oil drilling rig brake nitrogen spring according to claim 1, characterized in that: The oil seal ring (8) is connected to the push ring (13) via a clamping groove, and the guide ring (9) is interference-connected to the push ring (13).

6. The oil drilling rig brake nitrogen spring according to claim 1, characterized in that: The sliding rod (11) is connected to the friction plate (10) via bolts, and the distance between the friction plate (10) and the brake disc (2) is 5 mm.

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