Hollow electric hydraulic top drive

Abstract

The utility model provides a hollow electric hydraulic top drive device, including the tackle, the top configuration of trolley has the main shaft, drive arrangement, drive arrangement passes through the remote end support point of adding the main shaft, with the length effect of the main shaft is led to the transverse flexure vibration of inhibiting, the lift subassembly, lift subassembly is used for enlarging the lift angle of main shaft, the utility model relates to drive device technical field, when hollow motor passes through the rotation sleeve and drives the main shaft rotation, first support ring and rotation sleeve form two support points to the main shaft, with the length effect of the main shaft is led to the transverse flexure vibration of inhibiting, reduce the radial runout of main shaft free end, with the stability of increasing main shaft use.

Description

Technical Field

[0001] This utility model relates to the field of drive device technology, and in particular to a hollow electro-hydraulic top drive device. Background Technology

[0002] A rotary drilling rig is a type of rotary drilling rig used for geological drilling. It is named a rotary drilling rig because its main rotating mechanism is a rotary table.

[0003] In the prior art, the top drive device of the rotary drilling rig uses a hollow motor in conjunction with a connecting sleeve to drive the spindle of the rotary drilling rig, which reduces the volume occupied by the drive device and lowers the failure rate. However, in actual use, because the hollow motor is installed at one end of the spindle and the length of the spindle is too long, the radial runout of the free end of the spindle becomes larger. Utility Model Content

[0004] The purpose of this utility model is to provide a hollow electro-hydraulic top drive device, which solves the problem that the hollow motor used in the existing top drive device is installed at one end of the main shaft, and the length of the main shaft is too long, resulting in a large radial runout at the free end of the main shaft.

[0005] This utility model provides a hollow electro-hydraulic top drive device, including a trolley, a main shaft is configured on the top of the trolley, and a drive device. The drive device suppresses the lateral flexural vibration of the main shaft caused by the length effect by adding a support point at the far end of the main shaft.

[0006] A lifting assembly, the lifting assembly being used to increase the lifting angle of the spindle;

[0007] The driving device includes:

[0008] A hollow motor, comprising a rotating sleeve, the inner cavity of which is fixedly connected to the main shaft, and the outer periphery of which is connected to the trolley via a connecting member;

[0009] A first sleeve is arranged coaxially with the main shaft. One end of the first sleeve is connected to the rotating sleeve flange, and the other end of the first sleeve is slidably connected to a second sleeve.

[0010] The second sleeve has symmetrically distributed positioning pins on its outer periphery, and the second sleeve is connected to the first sleeve through the positioning pins;

[0011] The second sleeve has a first support ring on the side away from the first sleeve, and the first support ring is connected to the main shaft through a bearing.

[0012] Preferably, the connector includes:

[0013] A disc, one side of which is connected to the hollow motor, and a rotating shaft is fixedly connected to the other side of the disc, the rotating shaft being connected to the trolley via a bearing.

[0014] Preferably, the lifting assembly includes:

[0015] The second support ring is connected to the main shaft via a bearing, and crossbeams are symmetrically distributed on the outer periphery of the second support ring.

[0016] Two rockers, one end of each rocker is connected to the crossbeam, and the other end of each rocker is connected to the rotating shaft;

[0017] A driving element, the driving element being used to drive the rotating shaft to deflect.

[0018] Preferably, the driving element includes:

[0019] A gear, the central hole of which is connected to the rotating shaft, is located between the rocker and the trolley;

[0020] A toothed plate, which meshes with the gear, and a telescopic component is provided on the side of the toothed plate away from the gear;

[0021] The telescopic component is connected to the trolley via a clamp, and the telescopic component is used to drive the toothed plate to move vertically.

[0022] Preferably, the telescopic component is a hydraulic rod.

[0023] Preferably, the gear is provided with a pin, and the gear is connected to the trolley through the pin.

[0024] Preferably, the toothed plate has a limiting groove, a limiting pin is inserted into the limiting groove, and the limiting pin is connected to the trolley.

[0025] Preferably, a plurality of reinforcing rods are arranged in a ring in the inner cavity of the second sleeve, and the plurality of reinforcing rods are all inserted into the cylindrical groove of the first sleeve.

[0026] This utility model provides a hollow electro-hydraulic top drive device:

[0027] By using a hollow motor, a rotating sleeve, a first sleeve, a second sleeve, and a first support ring, the distance between the first and second sleeves is adjusted. Then, the cavity formed by the first and second sleeves is inserted into the outer circumference of the spindle. The first support ring located on the second sleeve is connected to the spindle via a bearing, and the first sleeve is connected to the rotating sleeve via a flange. When the hollow motor drives the spindle to rotate through the rotating sleeve, the first support ring and the rotating sleeve form two fulcrums on the spindle to suppress the lateral flexural vibration of the spindle caused by the length effect, reduce the radial runout of the free end of the spindle, and increase the stability of the spindle during use. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the rotating sleeve, the first sleeve, the second sleeve, and the first support ring in this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the first sleeve, the second sleeve, and the reinforcing rod in this utility model;

[0032] Figure 4 This is a structural schematic diagram of the trolley, connector, and rocker in this utility model;

[0033] Figure 5 This is a schematic diagram of the structure of the gear, pin, toothed plate, and limiting pin in this utility model;

[0034] Figure 6 This is a schematic diagram of the structure of the second support ring, crossbeam, and rocker plate in this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1-Pulley, 2-Main shaft, 3-Drive device, 31-Hollow motor, 311-Rotating sleeve, 32-First sleeve, 33-Second sleeve, 33a-Reinforcing rod, 331-Positioning pin, 332-First support ring, 34-Connector, 341-Disc, 342-Rotating shaft, 4-Lifting assembly, 41-Second support ring, 411-Crossbeam, 42-Lifting plate, 43-Drive component, 431-Gear, 431a-Pin, 432-Gear plate, 432a-Limiting groove, 432b-Limiting pin, 433-Telescopic component, 433a-Clamp. Detailed Implementation

[0037] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this embodiment, as Figure 1 and Figure 2As shown, a hollow electro-hydraulic top drive device includes a trolley 1, a main shaft 2 disposed on the top of the trolley 1, a drive device 3, the drive device 3 suppressing the lateral flexural vibration of the main shaft 2 caused by the length effect by adding a far end support point to the main shaft 2; and a lifting assembly 4, which is used to expand the lifting angle of the main shaft 2.

[0041] The drive device 3 includes: a hollow motor 31, which includes a rotating sleeve 311, the inner cavity of which is fixedly connected to the main shaft 2, and the outer periphery of which is connected to the trolley 1 via a connector 34; a first sleeve 32, which is coaxially arranged with the main shaft 2, one end of which is connected to the flange of the rotating sleeve 311, and the other end of which is slidably connected to a second sleeve 33; locating pins 331 are symmetrically distributed on the outer periphery of the second sleeve 33, which is connected to the first sleeve 32 via the locating pins 331, and a first support ring 332 is provided on the side of the second sleeve 33 away from the first sleeve 32, which is connected to the main shaft 2 via a bearing.

[0042] Therefore, the distance between the first sleeve 32 and the second sleeve 33 is adjusted, and the position of the second sleeve 33 on the first sleeve 32 is fixed by the positioning pin 331. Then, the cavity formed by the first sleeve 32 and the second sleeve 33 is inserted into the outer periphery of the main shaft 2. The first support ring 332 located on the second sleeve 33 is connected to the main shaft 2 through the bearing. The first sleeve 32 is connected to the rotating sleeve 311 through the flange. When the hollow motor 31 drives the main shaft 2 to rotate through the rotating sleeve 311, the first support ring 332 and the rotating sleeve 311 form two fulcrums for the main shaft 2 to suppress the lateral flexural vibration of the main shaft 2 caused by the length effect, reduce the radial runout of the free end of the main shaft 2, and increase the stability of the main shaft 2 during use.

[0043] Specifically, the hollow motor 31 is a technology known to those skilled in the art, and the rotating sleeve 311 is a component of the hollow motor 31. The hollow motor 31 drives the main shaft 2 to rotate through the rotating sleeve 311. By adjusting the position between the first sleeve 32 and the second sleeve 33, the distance between the first support ring 332 and the rotating sleeve 311 on the support point of the main shaft 2 is changed, so as to provide multi-point support for the main shaft 2.

[0044] It should be noted that the hollow structure formed by the first sleeve 32 and the second sleeve 33 can be used to install sensors and can collect excess cables connected to the sensors.

[0045] In some embodiments, such as Figure 6 As shown, the connector 34 includes: a disc 341, one side of which is connected to the hollow motor 31, and a rotating shaft 342 is fixedly connected to the other side of the disc 341. The rotating shaft 342 is connected to the trolley 1 through a bearing.

[0046] Specifically, there are two sets of connectors 34, which are symmetrically distributed based on the hollow motor 31. The disc 341 is used to connect the hollow motor 31 and the rotating shaft 342. The rotating shaft 342 is connected to the trolley 1 through the bearing, which facilitates the adjustment of the lifting stage of the main shaft 2 to drive the hollow motor 31 and the main shaft 2 to lift.

[0047] In some embodiments, such as Figure 4 and Figure 5 As shown, the lifting assembly 4 includes: a second support ring 41, which is connected to the main shaft 2 via a bearing, and crossbeams 411 are symmetrically distributed on the outer periphery of the second support ring 41; two rocker plates 42, one end of each rocker plate 42 is connected to the crossbeams 411, and the other end of each rocker plate 42 is connected to the rotating shaft 342; and a driving member 43, which is used to drive the rotating shaft 342 to deflect.

[0048] Specifically, the second support ring 41 forms a third support point for the main shaft 2, and the crossbeam 411 connects the rocker plate 42 and the second support ring 41. The rocker plate 42 drives the main shaft 2 to shift synchronously.

[0049] In some embodiments, such as Figure 5 As shown, the driving component 43 includes: a gear 431, the central hole of the gear 431 is connected to the rotating shaft 342, and the gear 431 is located between the rocker plate 42 and the trolley 1; a toothed plate 432, which meshes with the gear 431, and a telescopic component 433 is arranged on the side of the toothed plate 432 away from the gear 431; the telescopic component 433 is connected to the trolley 1 through a clamp 433a, and the telescopic component 433 is used to drive the toothed plate 432 to move vertically.

[0050] Specifically, after gear 431 and rotating shaft 342 are connected together, gear 431 can drive rotating shaft 342 to rotate together, tooth plate 432 moves up and down to drive gear 431 to rotate, and telescopic member 433 provides power for the vertical movement of tooth plate 432.

[0051] In some embodiments, such as Figure 4 As shown, telescopic component 433 is a hydraulic rod;

[0052] Specifically, the telescopic component 433 uses a hydraulic rod design to drive the toothed plate 432 to move up and down. Depending on the actual usage requirements, the telescopic component 433 can also be replaced by other telescopic structures.

[0053] In some embodiments, such as Figure 5 As shown, a pin 431a is provided in the gear 431, and the gear 431 is connected to the trolley 1 through the pin 431a;

[0054] Specifically, at least three pins 431a are designed. Pins 431a are used to fix the position of gear 431 in a horizontal state. When it is necessary to lift the spindle 2, pins 431a need to be removed from gear 431 in advance.

[0055] In some embodiments, such as Figure 5 As shown, the toothed plate 432 has a limiting groove 432a, and a limiting pin 432b is inserted into the limiting groove 432a. The limiting pin 432b is connected to the trolley 1.

[0056] Specifically, the limiting groove 432a is machined into a long strip shape, and the limiting pin 432b is used to constrain the movement direction of the toothed plate 432.

[0057] In some embodiments, such as Figure 2 and Figure 3 As shown, multiple reinforcing rods 33a are arranged in a ring in the inner cavity of the second sleeve 33, and all the reinforcing rods 33a are inserted into the cylindrical groove of the first sleeve 32.

[0058] Specifically, there are four reinforcing rods 33a. The design of the reinforcing rods 33a increases the connection strength between the first sleeve 32 and the second sleeve 33. The cylindrical groove designed in the first sleeve 32 is compatible with the reinforcing rods 33a.

[0059] The working principle of this application is illustrated below with a preferred embodiment:

[0060] The distance between the first sleeve 32 and the second sleeve 33 is adjusted according to the length of the output end of the spindle 2. The position of the second sleeve 33 on the first sleeve 32 is fixed by the positioning pin 331. Then, the cavity formed by the first sleeve 32 and the second sleeve 33 is inserted into the outer periphery of the spindle 2. The first support ring 332 located on the second sleeve 33 is connected to the spindle 2 through the bearing. The first sleeve 32 is connected to the rotating sleeve 311 through the flange. Thus, when the hollow motor 31 drives the spindle 2 to rotate through the rotating sleeve 311, the first support ring 332 and the rotating sleeve 311 form two fulcrums for the spindle 2 to increase the stability of the spindle 2 when rotating.

[0061] When it is necessary to adjust the lifting angle of the main shaft 2 on the trolley 1, first rotate the pin 431a to separate it from the trolley 1, then activate the telescopic component 433. The output end of the telescopic component 433 drives the gear plate 432 to move upward. Under the action of the gear plate 432, the gear 431 and the rotating shaft 342 are driven to rotate. One end of the rotating shaft 342 drives the hollow motor 31 to move through the disc 341, and the other end of the rotating shaft 342 drives the rocker plate 42 to move. The rocker plate 42 is connected to the tail end of the main shaft 2 through the crossbeam 411 and the second support ring 41. When the rocker plate 42 tilts, it drives the main shaft 2 to move together. Under the action of the gear plate 432 and the gear 431, the main shaft 2 can be rotated 90° (the telescopic rod with tilt setting used in the prior art can only raise the lifting angle of the main shaft 2 to 30° to 60°), thereby expanding the lifting angle of the main shaft 2.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hollow electro-hydraulic top drive device, comprising a trolley (1), wherein a main shaft (2) is disposed on the top of the trolley (1), characterized in that, The drive device (3) suppresses the lateral flexural vibration of the main shaft (2) caused by the length effect by adding a far end support point to the main shaft (2); Lifting assembly (4), the lifting assembly (4) is used to increase the lifting angle of the main shaft (2); The driving device (3) includes: Hollow motor (31), the hollow motor (31) includes a rotating sleeve (311), the inner cavity of the rotating sleeve (311) is fixedly connected to the main shaft (2), and the outer periphery of the hollow motor (31) is connected to the trolley (1) through a connector (34); The first sleeve (32) is arranged coaxially with the main shaft (2). One end of the first sleeve (32) is connected to the flange of the rotating sleeve (311), and the other end of the first sleeve (32) is slidably connected to the second sleeve (33). The second sleeve (33) has symmetrically distributed positioning pins (331) on its outer periphery, and the second sleeve (33) is connected to the first sleeve (32) through the positioning pins (331); The second sleeve (33) is provided with a first support ring (332) on the side away from the first sleeve (32), and the first support ring (332) is connected to the main shaft (2) through a bearing.

2. The hollow electro-hydraulic top drive device according to claim 1, characterized in that, The connector (34) includes: A disc (341) is connected to the hollow motor (31) on one side, and a rotating shaft (342) is fixedly connected to the other side of the disc (341). The rotating shaft (342) is connected to the trolley (1) through a bearing.

3. The hollow electro-hydraulic top drive device according to claim 2, characterized in that, The lifting component (4) includes: The second support ring (41) is connected to the main shaft (2) via a bearing, and crossbeams (411) are symmetrically distributed on the outer periphery of the second support ring (41). Two rockers (42), one end of each rocker (42) is connected to the crossbeam (411), and the other end of each rocker (42) is connected to the rotating shaft (342); A drive element (43) is used to drive the rotating shaft (342) to deflect.

4. The hollow electro-hydraulic top drive device according to claim 3, characterized in that, The drive unit (43) includes: Gear (431), the center hole of the gear (431) is connected to the rotating shaft (342), and the gear (431) is located between the rocker (42) and the trolley (1); A toothed plate (432) meshes with the gear (431), and a telescopic member (433) is provided on the side of the toothed plate (432) away from the gear (431). The telescopic component (433) is connected to the trolley (1) via a clamp (433a), and the telescopic component (433) is used to drive the toothed plate (432) to move vertically.

5. The hollow electro-hydraulic top drive device according to claim 4, characterized in that, The telescopic component (433) is a hydraulic rod.

6. The hollow electro-hydraulic top drive device according to claim 4, characterized in that, The gear (431) is provided with a pin (431a), and the gear (431) is connected to the trolley (1) through the pin (431a).

7. The hollow electro-hydraulic top drive device according to claim 4, characterized in that, The toothed plate (432) has a limiting groove (432a), and a limiting pin (432b) is inserted into the limiting groove (432a). The limiting pin (432b) is connected to the trolley (1).

8. The hollow electro-hydraulic top drive device according to claim 1, characterized in that, The inner cavity of the second sleeve (33) has a plurality of reinforcing rods (33a) arranged in a ring, and the plurality of reinforcing rods (33a) are all inserted into the cylindrical groove of the first sleeve (32).

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