A compact coiled tubing unit suitable for use in a mine roadway

Abstract

The application provides a compact continuous pipe operation device suitable for roadway operation, which comprises a drum, a continuous pipe, an injection head, a first frame and a second frame, the drum is rotatably arranged on the first frame, the continuous pipe is wound on the outer surface of the drum along the axial direction of the drum, the injection head is arranged on the second frame, one end of the injection head is connected with the continuous pipe, and the other end is connected with an orifice, and the device further comprises a first guide rail arranged on the first frame, the drum is slidably arranged above the first guide rail, a first support is arranged on the first frame, the drum is rotatably arranged on the first support along the axial direction of the drum, gear transmission mechanisms are arranged at the two ends of the first support respectively, the gear transmission mechanisms comprise first gears and second gears, the first gears and the second gears are connected through a rack, the first gears are connected with the drum, a first sliding block is arranged on the second gears, internal threads are arranged on the first sliding block, a screw rod is arranged in the first guide rail along the length direction of the first guide rail, and the screw rod is sleeved in the first sliding block through the internal threads.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of coal mine machinery, and particularly relates to a compact continuous pipe operation device suitable for roadway operation. BACKGROUND

[0002] The existing continuous pipe operation equipment in coal mine underground borrows from the continuous oil pipe operation equipment in the oil industry, that is, the equipment combination of injection head + guide + continuous pipe drum is used to realize the injection and pulling of the continuous pipe. However, due to the limited space in the coal mine underground operation, the borehole opening of the continuous pipe operation is located on the roadway wall, and the continuous pipe operation equipment must be arranged vertically to the roadway trend, thus limiting the length of the continuous pipe equipment. In the existing scheme, the equipment combination of injection head + guide + continuous pipe drum is used, and the length of the existing guide equipment is 1.5-2 m, thus the construction site needs to be expanded. The expansion refers to the excavation to the two sides perpendicular to the roadway trend in the coal mine roadway to expand the operation space to provide the space for the setting of the guide, which increases the construction cost and construction difficulty. In addition, the injection head is a force adding device for providing the thrust and pulling force of the continuous pipe. When used, the injection head needs to be aligned with the borehole opening and tightly connected. The existing device cannot adjust the spatial position and angle of the injection head, so the injection head cannot be tightly connected with the borehole opening, causing the roadway operation to be unable to normally proceed. SUMMARY

[0003] In view of the deficiencies in the prior art, the purpose of the present application is to provide a compact continuous pipe operation device suitable for roadway operation to solve the problems in the prior art.

[0004] In order to solve the above technical problems, the present application adopts the following technical scheme:

[0005] A compact continuous pipe operation device suitable for roadway operation, comprising a drum, a continuous pipe, an injection head, a first frame and a second frame, the drum is rotatably arranged on the first frame, the continuous pipe is wound on the outer surface of the drum along the axial direction of the drum, the injection head is arranged on the second frame, one end of the injection head is connected with the continuous pipe, and the other end is connected with a borehole opening, and the device is characterized in that further comprising:

[0006] A first guide rail is arranged on the first frame, and the drum is slidably arranged above the first guide rail. A first support is arranged on the first frame, and the drum is rotatably arranged on the first support at both ends along the axial direction. Gear transmission mechanisms are arranged at both ends of the first support. The gear transmission mechanisms comprise first gears and second gears. The first gears and the second gears are connected through a rack. The first gears are connected with the drum. A first sliding block is arranged on the second gears. An internal thread is arranged on the first sliding block. A screw rod is arranged in the first guide rail along the length direction. The screw rod is sleeved in the first sliding block through the internal thread,

[0007] Among them,

[0008]

[0009]

[0010] P = 2l cot θ

[0011] P is the unit pitch of the first slider moving on the screw rod when the second gear drives the first slider to rotate one round, unit: mm; n is the number of turns of the continuous tube winding on the roller per unit pitch, l is the diameter of the screw rod, unit: mm; d is the outer diameter of the second gear, unit: mm; θ is the helix angle of the screw thread, unit: degree; b is the outer diameter of the continuous tube, unit: mm; D is the outer diameter of the first gear, unit: mm.

[0012] Preferably, a second guide rail is arranged on the first frame, the second guide rail is arranged in parallel with the first guide rail, and a second slider matched with the second guide rail is arranged at both ends of the first support.

[0013] Preferably, a connecting rod is arranged at the position of the center shaft of the roller, and the first gear is arranged on the connecting rod, and the center of the first gear is arranged in line with the center of the roller.

[0014] Preferably, the second frame comprises a bottom plate, a support rod and an injection head support, the support rod is foldably arranged at one end of the bottom plate, and the injection head support is detachably arranged on the support rod, the injection head support comprises an upper plate and a lower plate, the upper plate and the lower plate are connected through a plurality of telescopic rods, each telescopic rod is slidably arranged on the lower plate along the transverse direction of the lower plate, the upper plate is arranged on the side away from the bottom plate, the lower plate is inserted with the support rod, a longitudinal sliding block is arranged on the upper plate, a rotating disc is rotatably arranged on the longitudinal sliding block, and the injection head is arranged on the rotating disc.

[0015] Preferably, a telescopic push rod is arranged on the second frame, one end of the telescopic push rod is connected with the bottom plate, the other end of the telescopic push rod is connected with the lower plate, an included angle is arranged between the telescopic push rod and the bottom plate, and the end of the telescopic push rod connected with the lower plate is arranged towards the support rod.

[0016] Preferably, the support rod is provided with two, which are arranged on both sides of one end of the bottom plate, the telescopic rod is provided with four, two slide ways are arranged on the lower plate in the transverse direction, a transverse sliding block is arranged on each slide way, two telescopic rods are arranged on each transverse sliding block, and the telescopic rods are distributed between the upper plate and the lower plate.

[0017] Preferably, at least one telescopic support is arranged on the upper and lower sides of the bottom plate.

[0018] Preferably, connecting grooves are arranged on both sides of the lower plate, and the two connecting grooves are respectively clamped on the support rod.

[0019] Preferably, a plurality of telescopic supports are arranged on the side of the first frame facing the ground.

[0020] Compared with the prior art, the present application has the following technical effects:

[0021] (I) The device of the present application is provided with a first guide rail on the first frame, and a roller is slidably arranged above the first guide rail. When the device is used in a coal mine roadway operation, the one end of the injection head is connected with the one end of the continuous pipe to provide power when the roller rolls away from the continuous pipe. At the same time, the roller is controlled to roll on the first guide rail. The first gear is connected with the low-temperature gear through a rack. The roller rolling drives the first gear to rotate, further driving the second gear to rotate. When the unit screw pitch P of the first slider rotating one round on the screw rod is the same as the number of turns of the continuous pipe winding on the roller, the one end of the injection head can continuously pull the continuous pipe. After the roller rolls along the central axis, the continuous pipe is separated from the roller. The one end of the separated continuous pipe is always located on the same horizontal line with the injection head. The device of the present application omits the guide device and ensures that the continuous pipe does not bend when it is separated from the roller. The winding length of the continuous pipe is greatly increased, and the continuity of the coal mine operation is ensured, and the length of the device in the axial direction of the drilling hole is greatly shortened.

[0022] (II) The device of the present application is provided with a support rod which is foldable on the second frame. The installation mode of the support rod can be selected according to the actual working condition. During transportation, the support rod is folded, and the injection head support is detachably connected with the support rod to reduce the height of the device, so as to adapt to the small space of the roadway during transportation. During operation, the support rod is erected, and the vertical position of the injection head can be adjusted through the setting position of the injection head support on the support rod. The lateral position of the injection head can be adjusted through the extension rod which is slidably arranged on the lower plate along the lateral direction of the lower plate. The longitudinal position of the injection head can be adjusted through the longitudinal slider arranged on the upper plate. The azimuth angle of the injection head can be adjusted through the rotating disc which is rotatably arranged on the slider. The inclination angle of the injection head can be adjusted by adjusting the extension distance of the different extension rods. The injection head is accurately controlled from the five degrees of freedom of up and down, front and back, left and right, inclination angle and azimuth angle. The injection head can be adjusted to the best matching position with the hole, the connection tightness of the injection head with the hole is improved, and the continuity of the roadway operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the overall structure schematic diagram of the compact continuous pipe operation device for roadway operation of the present application;

[0024] Figure 2 is the top view of the compact continuous pipe operation device for roadway operation of the present application;

[0025] Figure 3 is the connection relationship structure schematic diagram of the screw rod and the slider of the present application;

[0026] Figure 4is a schematic view of the mounting structure of the drum and the first frame of the present application;

[0027] Figure 5 is a schematic view of the working state of the drum on the first frame of the present application;

[0028] Figure 6 (a) is a side view (separate view) of the drum and the first frame of the present application;

[0029] Figure 6 (b) is a side view of the drum and the first frame of the present application;

[0030] Figure 7 is a schematic view of the mounting structure of the telescopic support of the present application;

[0031] Figure 8 is a front view of the second frame of the present application;

[0032] Figure 9 is a top view of the second frame of the present application;

[0033] Figure 10 is a schematic view of the structure of the injection head support of the present application;

[0034] Figure 11 is a top view of the lower plate of the present application;

[0035] Figure 12 is a top view of the upper plate of the present application.

[0036] The meanings of the respective reference numerals in the drawings are as follows:

[0037] 1 - drum, 2 - continuous pipe, 3 - injection head, 4 - first frame, 5 - second frame, 6 - orifice, 7 - first guide rail, 8 - first support, 9 - first gear, 10 - second gear, 11 - rack, 111 - first sliding block, 12 - screw rod, 13 - second guide rail, 14 - second sliding block, 15 - connecting rod, 16 - telescopic push rod, 401 - telescopic support, 501 - bottom plate, 502 - support rod, 503 - injection head support, 5031 - upper plate, 5032 - lower plate, 5033 - telescopic rod, 5034 - longitudinal sliding block, 5035 - rotating disc, 5036 - connecting groove, 5037 - slide, 5038 - transverse sliding block, 5011 - telescopic support, 401 - telescopic support, 01 - roadway, 02 - drilling site.

[0038] The specific content of the present application is further explained and described in detail in connection with the following examples. DETAILED DESCRIPTION

[0039] The following gives specific embodiments of the present application, it is necessary to note that the present application is not limited to the following specific embodiments, any equivalent transformation made on the basis of the technical scheme of the present application falls within the protection scope of the present application.

[0040] The directional terms mentioned herein, such as "transverse", "radial", "axial", "horizontal", "longitudinal", "upper", "lower", are consistent with the specific direction on the paper of the drawings or the corresponding direction of the space shown in the drawings.

[0041] Embodiment:

[0042] A compact coiled tubing device suitable for roadway operation, as shown in Figures 1-12 , comprising a drum 1, a coiled tubing 2, an injection head 3, a first frame 4 and a second frame 5, the drum 1 is rotatably arranged on the first frame 4, the coiled tubing 2 is wound on the outer surface of the drum 1 along the axial direction of the drum 1, the injection head 3 is arranged on the second frame 5, one end of the injection head 3 is connected with the coiled tubing 2, and the other end is connected with a hole 6, further comprising:

[0043] A first guide rail 7 is arranged on the first frame 4, the drum 1 is slidably arranged above the first guide rail 7, a first support 8 is arranged on the first frame 4, the drum 1 is rotatably arranged on the first support 8 at both ends along the axial direction, gear transmission mechanisms are arranged at both ends of the first support 8, the gear transmission mechanisms comprise a first gear 9 and a second gear 10, the first gear 9 and the second gear 10 are connected through a rack 11, the first gear 9 is connected with the drum 1, a first sliding block 111 is arranged on the second gear 10, an internal thread is arranged on the first sliding block 111, a screw rod 12 is arranged in the first guide rail 7 along the length direction, the screw rod 12 is sleeved in the sliding block 11 through the internal thread,

[0044] Among them,

[0045]

[0046]

[0047] P = 2l cotθ (3)

[0048] P is the unit pitch of the first sliding block 111 moving on the screw rod 12 when the second gear 10 rotates one round, unit, mm; n is the number of turns of the coiled tubing winding per unit pitch on the drum, l is the diameter of the screw rod, unit, mm; d is the outer diameter of the second gear, unit, mm; θ is the helix angle of the screw thread, unit, degree; b is the outer diameter of the coiled tubing, unit, mm; D is the outer diameter of the first gear, unit, mm;

[0049] The device of the embodiment is provided with the first guide rail on the first frame, and the roller is slidably arranged above the first guide rail. When the injection head is connected with one end of the continuous pipe to provide power, the roller rolls away from the continuous pipe. At the same time, the roller is controlled to roll on the first guide rail. When the first sliding block is rotated on the screw by one unit pitch P and the number of turns of the continuous pipe wound on the roller is the same, the injection head can continuously pull the continuous pipe. After the roller rolls along the central axis, the continuous pipe is separated from the roller. The end of the separated continuous pipe is always located on the same horizontal line with the injection head. The guide device is omitted, and the continuous pipe is not bent when separated from the roller. The winding length of the continuous pipe is greatly increased, the continuity of the coal mine operation is ensured, and the length of the equipment in the axial direction of the drilling hole is greatly shortened.

[0050] The formula 1-3 is set, and when the above equation is met, the injection head can continuously pull the continuous pipe. After the roller rolls along the central axis, the continuous pipe is separated from the roller. The end of the separated continuous pipe is always located on the same horizontal line with the injection head.

[0051] In the embodiment, specific value demonstration is given,

[0052] For the continuous oil pipe with an outer diameter b of 38 mm, a screw with a diameter l of 100 mm can be selected, and the design pitch P is 76 mm. The gear ratio of the first gear and the second gear is:

[0053]

[0054] According to the convenience of processing materials, a second gear with a diameter d of 250 mm can be selected, and a first gear with a diameter D of 500 mm can be matched,

[0055] The pitch of the screw thread helix angle is calculated:

[0056]

[0057] The calculation results are as follows:

[0058]

[0059] As a preferred scheme of the embodiment, the first frame 4 is further provided with a set of second guide rails 13, and the second guide rails 13 are arranged in parallel with the first guide rail 7. The first frame 4 is further provided with a set of second sliding blocks 14 matched with the second guide rails 13, and the first guide rail 7 is arranged between the set of second guide rails 13.

[0060] The second guide rail 13 can cooperate with the first guide rail 7 to make the roller slide more stably on the first frame, and ensure the working efficiency of the embodiment.

[0061] As a preferred embodiment, connecting rods 15 are respectively provided at the central shaft positions of both ends of the roller 1, and the first gear 9 is provided on the connecting rods 15, with the center of the first gear 9 being collinear with the center of the roller 1.

[0062] The connecting rod 15 serves to connect the first gear 9 with the roller. By setting the center of the first gear 9 and the center of the roller 1 to be collinear, the first gear 9 drives the roller 1 to move, thus ensuring the continuity of the rolling motion.

[0063] In a preferred embodiment, the second frame 5 includes a base plate 501, a support rod 502, and an injection head bracket 503. The support rod 502 is foldably disposed at one end of the base plate 501, and the injection head bracket 503 is detachably disposed on the support rod 502. The injection head bracket 503 includes an upper plate 5031 and a lower plate 5032, which are connected by multiple telescopic rods 5033. Each telescopic rod 5033 is slidably disposed on the lower plate 5032 along the lateral direction of the lower plate 5032. The upper plate 5031 is disposed on the side away from the base plate 501, and the lower plate 5032 is inserted into the support rod 502. A longitudinal slider 5034 is disposed on the upper plate 5031, and a turntable 5035 is rotatably disposed on the slider 5034. The injection head 3 is disposed on the turntable 5035.

[0064] The support rod 502 is foldable and located at one end of the base plate 501. During transportation, the support rod 502 is retracted, reducing the height of the device and facilitating transport to adapt to the working environment of the tunnel. When the device arrives at the work site, the support rod 502 is extended, providing an installation point for the injection head bracket 503 and controlling the vertical position of the injection head mounted on the injection head bracket 503. The injection head bracket 503 is detachably mounted on the support rod 502 to facilitate its operation in both supported and retracted states. When the support rod is in a supported state, the injection head bracket 503 is mounted on the support rod. When retracted, the injection head bracket 503 is mounted on the second frame 5. The telescopic rod 5033 is used to control the tilt angle of the injection head mounted on the injection head bracket 503. The telescopic rod 5033 is slidably mounted on the lower plate 5032 to facilitate adjustment of the lateral position of the telescopic rod 5033, which is used to control the lateral position of the injection head mounted on the injection head bracket 503. The longitudinal slider 5034 is used to control the longitudinal position of the injection head mounted on the injection head bracket 503. The turntable 5035 is used to control the azimuth angle of the injection head mounted on the injection head bracket 503. In this embodiment, the most convenient method is used to achieve precise control of five degrees of freedom: vertical, longitudinal, lateral, tilt angle, and azimuth angle.

[0065] As a preferred embodiment, the second frame 5 is also provided with a telescopic push rod 16. One end of the telescopic push rod 16 is connected to the base plate 501 and the other end is connected to the lower plate 5032. An angle is provided between the telescopic push rod 16 and the base plate 501. The end of the telescopic push rod 16 connected to the lower plate 5032 is set towards the support rod 502.

[0066] The telescopic push rod 16 provides thrust for the installation of the injection head bracket on the support rod, facilitating the installation of the injection head bracket.

[0067] As a preferred embodiment, two support rods 502 are provided, corresponding to both sides of one end of the base plate 501. Four telescopic rods 5033 are provided. Two slides are provided laterally on the lower plate 5032. A horizontal slider 5038 is provided on each slide. Two telescopic rods 5033 are provided on each horizontal slider 5038. The telescopic rods 5033 are evenly distributed between the upper plate 5031 and the lower plate 5032.

[0068] The device comprises two support rods 502 and four telescopic rods 5033, all designed to improve the installation stability of the injection head bracket and enhance the overall operational stability of the device in this embodiment. The telescopic rods 5033 can slide on a track using a transverse slider 5038.

[0069] As a preferred embodiment, at least one telescopic support 5011 is provided on the upper and lower sides of the base plate 501.

[0070] The telescopic support 5011 provides stable support for the operation of the second frame. During operation, the telescopic support 5011 is supported, and after operation, the telescopic support 5011 is retracted.

[0071] As a preferred embodiment, the lower plate 5032 is provided with connecting grooves 5036 on both sides. The two connecting grooves 5036 are respectively locked onto the support rod 502, which facilitates the installation of the lower plate 5032 on the support rod 502. After the lower plate 5032 is set on the support rod 502 through the connecting grooves 5036, the connecting grooves 5036 are manually locked with pins to fix the lower plate 5032 on the support rod 502.

[0072] As a preferred embodiment, the first frame 4 is provided with a plurality of telescopic brackets 401 on the side facing the ground.

[0073] The telescopic bracket 401 is used to support the first frame 4 and provide stable support for the operation of the first frame 4. The telescopic bracket 401 is supported during operation and retracted after operation.

[0074] The operation of this embodiment is as follows:

[0075] During construction, the first frame 4 and the first guide rail 7 are transported to the construction site. The first frame 4 is placed on the first guide rail 7 and fixed with the extension telescopic bracket 401. The continuous tube at the outlet of the roller 1 is connected to the injection diagram to ensure that one end of the injection head continuously pulls the continuous tube. After the roller rolls along its central axis, the continuous tube detaches from the roller. At the same time, the roller rolls on the first frame and the first guide rail. The second gear drives the first slider to rotate on the screw. The unit pitch P of the movement is the same as the number of turns of the continuous tube wound on the roller with a unit pitch. This ensures that one end of the injection head continuously pulls the continuous tube. After the roller rolls along its central axis, the continuous tube detaches from the roller. The detached end of the continuous tube is always on the same horizontal line as the injection head.

[0076] In this embodiment, the injection head support is transported to the bottom yard in a cage, then to the fracturing roadway using a second frame. Upon arrival at the construction site, power is connected, and the position of the second frame is adjusted to be as close as possible to and aligned with the orifice. The telescopic support 5011 is raised to securely fix the second frame in the construction position. The support rod is adjusted to a vertical position, and the telescopic push rod 16 extends forward, pushing the injection head support forward until the connecting groove engages with the support rod. The connecting groove is manually locked using a pin and a slider. The telescopic push rod 16 is continued to push the injection head support upward along the support rod until it reaches the designated height. The telescopic rod is adjusted to move left and right on the slide rail to bring the injection head to the predetermined lateral position. The height of the telescopic rod is adjusted so that the injection head has the same inclination angle as the orifice pipe. The turntable is adjusted so that the injection head has the same azimuth angle as the orifice pipe. The slider 5034 is pushed to ensure a tight connection between the injection head and the orifice, and fracturing operations begin. After the operation is completed, the machine body is folded into transport mode and removed from the site.

Claims

1. A compact continuous tube operating device suitable for tunnel operations, comprising a drum (1), a continuous tube (2), an injection head (3), a first frame (4), and a second frame (5), wherein the drum (1) is rotatably mounted on the first frame (4), the continuous tube (2) is wound axially around the outer surface of the drum (1), and the injection head (3) is mounted on the second frame (5), one end of the injection head (3) is connected to the continuous tube (2), and the other end is connected to an orifice (6), characterized in that, Also includes: The first guide rail (7) is mounted on the first frame (4). The roller (1) is slidably mounted above the first guide rail (7). The first frame (4) is mounted on the first support (8). The roller (1) is rotatably mounted on the first support (8) at both ends along its axial direction. The first support (8) is mounted on both ends of the first support (8). The gear transmission mechanism includes a first gear (9) and a second gear (10). The first gear (9) and the second gear (10) are connected by a rack (11). The first gear (9) is connected to the roller (1). The second gear (10) is mounted on the first slider (111). The first slider (111) is mounted on the first slider (111). The first guide rail (7) is mounted on the first guide rail (7) along its length direction. The screw (12) is mounted on the first slider (111) through the internal thread. The second frame (5) includes a base plate (501), a support rod (502), and an injection head bracket (503). The support rod (502) is foldably mounted on one end of the base plate (501), and the injection head bracket (503) is detachably mounted on the support rod (502). The injection head bracket (503) includes an upper plate (5031) and a lower plate (5032), which are connected by multiple telescopic rods (5033). The connection is as follows: each telescopic rod (5033) is slidably mounted on the lower plate (5032) along the transverse direction of the lower plate (5032), the upper plate (5031) is located on the side away from the bottom plate (501), the lower plate (5032) is inserted into the support rod (502), the upper plate (5031) is provided with a longitudinal slider (5034), a turntable (5035) is rotatably mounted on the longitudinal slider (5034), and the injection head (3) is mounted on the turntable (5035); The second frame (5) is also provided with a telescopic push rod (16). One end of the telescopic push rod (16) is connected to the bottom plate (501) and the other end is connected to the lower plate (5032). There is an angle between the telescopic push rod (16) and the bottom plate (501). The end of the telescopic push rod (16) connected to the lower plate (5032) is set towards the support rod (502). Two support rods (502) are provided, corresponding to the two sides of one end of the base plate (501). Four telescopic rods (5033) are provided. Two slide rails (5037) are provided horizontally on the lower plate (5032). A horizontal slider (5038) is provided on each slide rail (5037). Two telescopic rods (5033) are provided on each horizontal slider (5038). The telescopic rods (5033) are evenly distributed between the upper plate (5031) and the lower plate (5032).

2. The compact continuous tube working device for roadway operations as described in claim 1, characterized in that, The first frame (4) is also provided with a set of second guide rails (13), which are parallel to the first guide rail (7). The first bracket (4) is also provided with a set of second sliders (14) that match the second guide rails (13) at both ends. The first guide rail (7) is located between the set of second guide rails (13).

3. The compact continuous tube working device for roadway operations as described in claim 2, characterized in that, Connecting rods (15) are respectively installed at the central shaft positions of both ends of the roller (1), and the first gear (9) is installed on the connecting rod (15). The center of the first gear (9) is collinear with the center of the roller (1).

4. The compact continuous tube working device for roadway operations as described in claim 1, characterized in that, At least one telescopic support (5011) is provided on the upper and lower sides of the base plate (501).

5. The compact continuous tube working device for roadway operations as described in claim 4, characterized in that, The lower plate (5032) is provided with connecting grooves (5036) on both sides, and the two connecting grooves (5036) are respectively locked onto the support rod (502).

6. The compact continuous tube working apparatus for roadway operations as described in claim 5, characterized in that, Multiple telescopic brackets (401) are provided on the side of the first frame (4) facing the ground.

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