Electrically-driven brake coil structure of petroleum drilling machine

Abstract

The utility model relates to the technical field of brake coils, and discloses an electrically-driven brake coil structure of a petroleum drilling machine, which comprises a coil holder, a mounting ring, a coil wound on the mounting ring, a rotating shaft, a shaft sleeve and a pressure disc, the shaft sleeve is rotatably connected with the rotating shaft, the rotating shaft penetrates through the coil holder, and the pressure disc is slidably connected with the shaft sleeve. A first ring groove and a second ring groove are connected to the coil holder, the inner diameter of the first ring groove is matched with the inner diameter of the mounting ring, a limiting assembly capable of limiting the coil is arranged on the mounting ring, the second ring groove and the first ring groove are concentrically arranged, the second ring groove is formed in the outer side of the first ring groove, and a first friction ring is arranged in the second ring groove; a plurality of mounting grooves are uniformly distributed and connected to the inner side of the first ring groove of the coil holder, and first springs are arranged in the mounting grooves. Compared with the prior art, the utility model has the advantages that the coil can be conveniently limited, the coil distribution is avoided, and the maintenance complexity is reduced; the distance between the pressure disc and the coil holder can be adjusted according to the braking force.

Description

Technical Field

[0001] The utility model relates to the technical field of brake coils, in particular to an electric drive brake coil structure for a petroleum drilling rig. Background Art

[0002] Existing auxiliary braking devices for oil drilling rigs primarily include hydraulic disc brakes, water brakes, electromagnetic eddy current brakes, and motor dynamic braking. Electromagnetic eddy current brakes utilize a rotor rotating within a controlled magnetic field within the stator to cut through magnetic lines of force, generating eddy currents and counter-torque to dissipate drilling energy and thereby control drilling speed. This type of brake is more reliable and responsive than hydraulic brakes, effectively controlling drilling speed.

[0003] The coils used in existing electromagnetic eddy current brakes are mostly directly wound on the mounting ring, and then the mounting ring with the wound coil is placed on the end of the drilling rig drive structure. Once a fault occurs and the coil needs to be removed for inspection and maintenance, since the outer periphery of the coil is not fixed, when it is removed, the two sides of the coil are squeezed toward the end face, which can easily cause the coil winding to be messy and even easy to get loose, increasing the difficulty of maintenance; in addition, existing electromagnetic eddy current brakes mostly use spring plates or springs to maintain a distance between the pressure plate and the coil seat. The distance is inconvenient to adjust according to the braking force, which reduces practicality. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the utility model is that the coil is easily damaged during maintenance, which increases the difficulty of maintenance; and the distance between the pressure plate and the coil seat is inconvenient to adjust according to the braking force.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: an electric drive brake coil structure of an oil drilling rig, including a coil seat, a mounting ring, a coil wound on the mounting ring, a rotating shaft, a sleeve and a pressure plate, the sleeve is rotatably connected to the rotating shaft, the rotating shaft is set through the coil seat, and the pressure plate is slidably connected to the sleeve, the coil seat is connected with a first ring groove and a second ring groove, the inner diameter of the first ring groove is matched with the inner diameter of the mounting ring, the mounting ring is provided with a limiting component for limiting the coil, the second ring groove is concentrically arranged with the first ring groove and the second ring groove is arranged outside the first ring groove, a first friction ring is provided in the second ring groove, the coil seat is evenly connected with a plurality of mounting grooves on the inner side of the first ring groove, a first spring is provided in the mounting groove, the other side of the first spring is set against the pressure plate, and the pressure plate is provided with a second friction ring that matches the first friction ring relative to the first friction ring.

[0008] Furthermore, the limit assembly includes a connecting cylinder relative to the array in the circumference of the mounting ring, the connecting cylinder is provided with an inner rod, the bottom end of the inner rod is connected to a connecting seat, and sliders are respectively connected to the connecting seat, and the two sides of the connecting cylinder are relatively connected with slide grooves, and the slide grooves slide with the slide blocks, and a second spring is connected between the bottom end of the connecting seat and the bottom wall of the connecting cylinder. The other end of the inner rod passes through the connecting cylinder and is connected to a stop rod at the end. When it is necessary to wind the mounting ring, the slider is driven by the inner rod to rotate into the longitudinal groove, so that the connecting seat moves to a higher position, and the stop rod is rotated to the outside of the mounting ring to facilitate winding; when the winding is completed and the coil needs to be limited to prevent it from being released, the stop rod can be driven in reverse to make the slider rotate into the longitudinal groove, and then the connecting seat is moved until the stop rod abuts against the outside of the coil, and the stop rod is rotated to the inside of the mounting ring to limit the coil.

[0009] Furthermore, the slide groove includes a longitudinal groove, and the longitudinal groove is evenly provided with a plurality of transverse grooves that can limit the connecting seat. The transverse grooves are arranged transversely to the longitudinal grooves. The cooperation between the longitudinal grooves and the slider facilitates the connecting seat to drive the inner rod to slide up and down. The cooperation between the transverse grooves and the slider facilitates the connecting seat to drive the stop rod to rotate left and right through the inner rod, thereby facilitating the stop rod to limit the coil, and also driving the stop rod to rotate to the outside of the mounting ring to avoid affecting the winding.

[0010] Furthermore, a ball is provided at one end of the first spring close to the pressure plate, and an annular rolling groove is connected to the pressure plate. The rolling groove and the ball cooperate to reduce the wear of the first spring when the pressure plate rotates.

[0011] Furthermore, the mounting groove is connected with a through groove at one end away from the pressure plate, and a sliding rod is slidably connected in the through groove. One end of the sliding rod slides through the through groove, and the other end is connected with a spring seat in the mounting groove. The coil seat is threadedly connected with an adjusting disk at one end away from the pressure plate, and the end face of the adjusting disk abuts the free end of the sliding rod. The adjusting disk adjusts the force of the first spring by adjusting the length of the spring seat in the sliding groove, thereby adjusting the gap between the coil seat and the pressure plate.

[0012] Furthermore, driving grooves are respectively connected to both sides of the adjusting disk to facilitate driving the adjusting disk.

[0013] 3. Beneficial Effects

[0014] The advantages of this utility model compared with the prior art are:

[0015] By controlling the on and off of the coil and the size of the energized current, the coil generates an induced current, which drives the pressure plate to move closer to the coil seat under the action of the first spring. When the pressure plate is close to the coil seat, the contact friction between the second friction ring and the first friction ring increases and cooperates to achieve braking; the setting of the limit assembly facilitates the regularization of the coil on the mounting ring to avoid the coil from being damaged and affecting subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an electric drive brake coil structure for an oil drilling rig. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the structure of an electric drive brake coil structure for an oil drilling rig. Figure 2 .

[0018] Figure 3 The utility model is a schematic diagram of the main cross-section structure of an electric drive brake coil structure of an oil drilling rig.

[0019] Figure 4 The utility model is a structural schematic diagram of a mounting ring, a coil and a limit assembly in an electric drive brake coil structure of an oil drilling rig.

[0020] Figure 5 The utility model is a schematic diagram of the main cross-sectional structure of a limit assembly in an electric drive brake coil structure of an oil drilling rig.

[0021] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure of A in the middle.

[0022] As shown in the figure: 1. Coil seat, 2. Mounting ring, 3. Coil, 4. Rotating shaft, 5. Pressure plate, 6. First ring groove, 7. Second ring groove, 8. First friction ring, 9. Mounting groove, 10. First spring, 11. Second friction ring, 12. Connecting tube, 13. Inner rod, 14. Connecting seat, 15. Slider, 16. Slide groove, 17. Second spring, 18. Stop rod, 19. Longitudinal groove, 20. Horizontal groove, 21. Ball, 22. Rolling groove, 23. Slide rod, 24. Spring seat, 25. Adjusting disk, 26. Drive groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] Combined with attachment Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 A structure for an electric-driven brake coil for an oil drilling rig includes a coil seat 1, a mounting ring 2, a coil 3 wound around the mounting ring 2, a rotating shaft 4, a sleeve, and a pressure plate 5. The sleeve is rotatably connected to the rotating shaft 4, which is set through the coil seat 1. The pressure plate 5 is slidably connected to the sleeve. The mounting ring 2 is provided with a limiting assembly for limiting the position of the coil 3. The limiting assembly includes a connecting tube 12 arranged relative to the circumference of the mounting ring 2. An inner rod 13 is provided in the connecting tube 12. The bottom end of the inner rod 13 is connected to a connecting seat 14. , the two sides of the connecting seat 14 are respectively connected with sliders 15, and the two sides of the connecting tube 12 are relatively connected with slide grooves 16, the slide grooves 16 and the slide blocks 15 slide together, the slide grooves 16 include longitudinal grooves 19, and the longitudinal grooves 19 are evenly distributed with a number of transverse grooves 20 that can limit the connecting seat 14. The transverse grooves 20 are arranged transversely to the longitudinal grooves 19. A second spring 17 is connected between the bottom end of the connecting seat 14 and the bottom wall of the connecting tube 12. The other end of the inner rod 13 passes through the connecting tube 12 and is connected to a stop rod 18 at the end.

[0026] The provision of the limiting assembly facilitates the regularization of the coil 3 on the mounting ring 2, thereby preventing the coil 3 from becoming loose and affecting subsequent maintenance.

[0027] Combined with attachment Figure 1 、 Figure 2 and Figure 3 The coil seat 1 is connected with a first ring groove 6 and a second ring groove 7. The inner diameter of the first ring groove 6 matches the inner diameter of the mounting ring 2. The second ring groove 7 is concentric with the first ring groove 6 and the second ring groove 7 is arranged outside the first ring groove 6. A first friction ring 8 is arranged in the second ring groove 7. The coil seat 1 is evenly connected with a plurality of mounting grooves 9 on the inner side of the first ring groove 6. A first spring 10 is arranged in the mounting groove 9. The other side of the first spring 10 is arranged against the pressure plate 5. A ball 21 is provided at one end of the first spring 10 close to the pressure plate 5. The pressure plate 5 is connected with an annular rolling groove 22. The rolling groove 22 cooperates with the ball 21. The pressure plate 5 is provided with a second friction ring 11 that cooperates with the first friction ring 8 relative to the first friction ring 8.

[0028] By controlling the on and off of the coil 3 and the magnitude of the current flowing through it, the induced current generated by the coil 3 generates a magnetic flux, which in turn drives the pressure plate 5 to move closer to the coil base 1 under the action of the first spring 10. When the pressure plate 5 is close to the coil base 1, the contact friction between the second friction ring 11 and the first friction ring 8 increases and cooperates to achieve braking.

[0029] Example 2

[0030] Combined with attachment Figure 3 The mounting groove 9 is connected with a through groove for sliding through one end away from the pressure plate 5, and a sliding rod 23 is slidably connected in the through groove. One end of the sliding rod 23 passes through the through groove, and the other end is connected with a spring seat 24 in the mounting groove 9. The coil seat 1 is connected with an adjusting disk 25 through a threaded connection at one end away from the pressure plate 5. The end face of the adjusting disk 25 abuts the free end of the sliding rod 23. Drive grooves 26 are respectively connected on both sides of the adjusting disk 25, and the adjusting disk 25 is sleeved on the outside of the rotating shaft 4.

[0031] The adjusting disk 25 is adjusted through the driving slot 26 so as to adjust the gap between the coil seat 1 and the pressure plate 5 to meet different braking requirements.

[0032] The specific usage is as follows:

[0033] When the control coil 3 is energized and the magnitude of the energized current is controlled, the induced current generated by the coil 3 attracts the pressure plate 5, causing the pressure plate 5 to move closer to the coil seat 1 under the action of the first spring 10. When the pressure plate 5 is close to the coil seat 1, the contact friction between the second friction ring 11 and the first friction ring 8 increases and cooperates to achieve braking; the spring seat 24 is driven to move by the adjusting plate 25, and the spring seat 24 drives the first spring 10, thereby facilitating the adjustment of the gap between the coil seat 1 and the pressure plate 5 to achieve adjustment of the braking force;

[0034] When the coil 3 is de-energized, the rotor drives the shaft 4 to rotate the pressure plate 5. The groove 22 and the ball 21 cooperate to reduce the wear of the first spring 10 when the pressure plate 5 rotates. The adjusting plate 25 is driven by the driving groove 26. The adjusting plate 25 adjusts the force of the first spring 10 by adjusting the length of the spring seat 24 in the slide groove 16, thereby adjusting the gap between the coil seat 1 and the pressure plate 5.

[0035] In order to avoid the coil 3 on the mounting ring 2 from being damaged during maintenance, a limit assembly can be set on the mounting ring 2 to facilitate the regularization of the coil 3, which will not only not affect the winding but also facilitate its recycling. When the mounting ring 2 needs to be wound, the slider 15 is driven by the inner rod 13 to rotate into the longitudinal groove 19. The cooperation between the longitudinal groove 19 and the slider 15 facilitates the connecting seat 14 to drive the inner rod 13 to slide up and down, so that the connecting seat 14 moves to a higher position, and the stop rod is rotated to the outside of the mounting ring 2, through the transverse groove 2 The cooperation between 0 and the slider 15 facilitates the connecting seat 14 to drive the stop rod to rotate left and right through the inner rod 13, thereby facilitating the stop rod to limit the coil 3, and also driving the stop rod to rotate to the outside of the mounting ring 2 to facilitate winding; when the winding is completed and the coil 3 needs to be limited to prevent it from being wired, the stop rod can be driven in the reverse direction to rotate the slider 15 into the longitudinal groove 19, and then the connecting seat 14 is moved until the stop rod abuts the outside of the coil 3, and the stop rod is rotated to the inside of the mounting ring 2 to limit the coil 3.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0038] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. An electric drive brake coil structure for an oil drilling rig, comprising a coil seat (1), a mounting ring (2), a coil (3) wound around the mounting ring (2), a rotating shaft (4), a sleeve, and a pressure plate (5), wherein the sleeve is rotatably connected to the rotating shaft (4), the rotating shaft (4) passes through the coil seat (1), and the pressure plate (5) is slidably connected to the sleeve, characterized in that: The coil seat (1) is connected with a first ring groove (6) and a second ring groove (7), the inner diameter of the first ring groove (6) matches the inner diameter of the mounting ring (2), the mounting ring (2) is provided with a limiting component capable of limiting the coil (3), the second ring groove (7) is concentrically arranged with the first ring groove (6) and the second ring groove (7) is arranged outside the first ring groove (6), a first friction ring (8) is arranged in the second ring groove (7), the coil seat (1) is evenly connected with a plurality of mounting grooves (9) on the inner side of the first ring groove (6), a first spring (10) is arranged in the mounting groove (9), the other side of the first spring (10) is arranged against the pressure plate (5), and the pressure plate (5) is provided with a second friction ring (11) matching the first friction ring (8) relative to the first friction ring (8).

2. The oil drilling rig electric drive brake coil structure according to claim 1, characterized in that: The limiting assembly includes a connecting tube (12) arranged relative to the circumference of the mounting ring (2), an inner rod (13) is provided in the connecting tube (12), the bottom end of the inner rod (13) is connected to a connecting seat (14), both sides of the connecting seat (14) are respectively connected to sliders (15), and both sides of the connecting tube (12) are relatively connected to slide grooves (16), the slide grooves (16) and the sliders (15) are slidably matched, a second spring (17) is connected between the bottom end of the connecting seat (14) and the bottom wall of the connecting tube (12), and the other end of the inner rod (13) passes through the connecting tube (12) and is connected to a stop rod (18) at the end.

3. The oil drilling rig electric drive brake coil structure according to claim 2, characterized in that: The sliding groove (16) includes a longitudinal groove (19), and a plurality of transverse grooves (20) are evenly distributed on the longitudinal groove (19) for limiting the connection seat (14), and the transverse grooves (20) are arranged transversely to the longitudinal groove (19).

4. The oil drilling rig electric drive brake coil structure according to claim 1, characterized in that: A ball (21) is provided at one end of the first spring (10) close to the pressure plate (5), and an annular rolling groove (22) is connected to the pressure plate (5), and the rolling groove (22) and the ball (21) are matched.

5. The oil drilling rig electric drive brake coil structure according to claim 1, characterized in that: The mounting groove (9) is slidably connected to one end of the pressure plate (5) and is provided with a through groove, and a sliding rod (23) is slidably connected in the through groove. One end of the sliding rod (23) passes through the through groove, and the other end is connected to a spring seat (24) in the mounting groove (9). The coil seat (1) is threadedly connected to one end of the pressure plate (5) and is provided with an adjusting disk (25), and the end face of the adjusting disk (25) abuts against the free end of the sliding rod (23).

6. The oil drilling rig electric drive brake coil structure according to claim 5, characterized in that: Both sides of the adjustment disk (25) are respectively connected with driving grooves (26), and the adjustment disk (25) is sleeved on the outside of the rotating shaft (4).

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