Drilling rig power head with drill pipe reducer connector and 600 to 800 meter drilling rig

Abstract

The present invention relates to the technical field of core drilling rigs, and provides a drilling rig power head with a drill pipe reducer connector, including a power head body and a connector, wherein the connector includes a first fastening member and a second fastening member that are mutually matched and buckled on the connector, and the connector also includes a booster assembly, wherein the booster assembly can always apply thrust to the first fastening member and / or the second fastening member, so that the first fastening member and the second fastening member maintain a tendency to move toward each other and hold the connector tightly. Also provided is a 600 to 800 meter-class drilling rig, a mobile frame, a mud pump, an engine assembly, a hydraulic oil tank, a drilling assembly and an operating console, wherein the drilling assembly includes the drilling rig power head with a drill pipe reducer connector. By adding a booster assembly, the present invention can continuously apply thrust to the first and second fasteners, so that they always hold the drill pipe tightly without stopping for adjustment, thereby significantly improving efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of core drilling rigs, and in particular to a drilling rig power head with a drill pipe reducer connector and a 600-800-meter-class drilling rig. Background Art

[0002] During field drilling and exploration operations, due to the influence of geological structure and changes in drilling diameter requirements, drill rods of different diameters must be replaced. At the same time, the connector between the drill rod and the drill bit must also be replaced. Each drill rod of a certain diameter must be equipped with a connector. Therefore, the connector must be replaced when replacing drill rods of different diameters. In addition, there are no fixings to fix the connector, and it can only be tightly socketed. Due to the torque generated by the drilling rig and the frequent replacement of drill rods, the socket of the connector will become worn and fall off after installation after a certain period of use, resulting in drill bit falling, which seriously affects the efficiency of field drilling operations and brings many inconveniences to work.

[0003] For this purpose, the existing patent "CN 209324273 U", the patent name "A drilling rig power head with a drill pipe reducer connector", discloses a power head body and a connector, the power head body and the connector are sleeved, the power head includes a core shaft and a rear end cover, a shell, a front end cover, a nozzle connection sleeve, and a connector which are sequentially sleeved on the core shaft, the connector on the power head body is sleeved with the connector, the connector is in the shape of a circular boss, and is composed of two symmetrical longitudinally cut boss surface fasteners, a first fastener and a second fastener, and is arranged on the connector head. Although this patent can replace the drill pipe without replacing the connector, it can be applied to various rod diameters. At the same time, the drill pipe can be tightened by bolts, and there is no falling off or drill dropping during operation. However, there are the following problems:

[0004] During use, the socket of the connector will become larger due to wear, and the above patent cannot automatically adjust the socket diameter. Manual intervention is required to screw the fastener each time to lock the socket to the drill bit. Therefore, during the drilling process, when the socket is worn and the drill is removed, it is still necessary to stop and adjust, and the efficiency needs to be further improved. Therefore, how to solve the above problem has become the focus of research in this field. Summary of the invention

[0005] The object of the present invention is to provide a drilling rig power head with a drill pipe reducer connector and a 600-800-meter-class drilling rig, so as to solve the problems of the insufficiency of the prior art.

[0006] The embodiments of the present invention are implemented by the following technical solutions:

[0007] A drilling rig power head with a drill pipe reducer connector includes a power head body and a connector. The connector head of the power head body is sleeved with the connector. The connector includes a first fastening member and a second fastening member that are mutually matched and buckled on the connector head. The connector also includes a booster assembly. The booster assembly can always apply a thrust to the first fastening member and / or the second fastening member so that the first fastening member and the second fastening member maintain a tendency to move toward each other and hold the connector head tightly.

[0008] Furthermore, the edges of the first fastening member and the second fastening member are both provided with smooth hole sliding sleeves, the smooth hole sliding sleeve on the first fastening member and the smooth hole sliding sleeve on the second fastening member are arranged correspondingly, a bolt rod is passed through the two corresponding smooth hole sliding sleeves on the first fastening member and the second fastening member, and threaded sliding sleeves for limiting the engagement radius of the first fastening member and the second fastening member are arranged correspondingly on both sides of the bolt rod.

[0009] Furthermore, the threaded sleeve is in the shape of a cylindrical boss, the small diameter section of the threaded sleeve extends into the light hole sleeve, and the large diameter section of the threaded sleeve abuts against the outer side of the light hole sleeve.

[0010] Furthermore, the boosting assembly is provided on the bolt rod on the side where the first fastening member and / or the second fastening member are located, and the boosting assembly includes a compression spring and a movable sleeve, one end of the compression spring is connected to the abutment block at the end of the bolt rod, and the other end of the compression spring is connected to the movable sleeve, and the movable sleeve abuts against the outer side of the light hole sleeve.

[0011] Furthermore, a side surface of the movable sleeve that fits with the light hole sleeve is provided with an avoidance groove, the end of the threaded sleeve is accommodated in the avoidance groove, and an avoidance interval is left between the end of the threaded sleeve and the bottom of the avoidance groove.

[0012] Furthermore, the boosting assembly also includes a back-stop assembly for preventing the movable sleeve from moving toward the compression spring side.

[0013] Furthermore, the back-stop assembly includes a ratchet pawl assembly and a guide rack, the ratchet pawl assembly is fixedly connected to the movable sleeve, and the guide rack is engaged with the ratchet in the ratchet pawl assembly.

[0014] Furthermore, the ratchet pawl assembly includes a U-shaped ratchet mounting seat, a ratchet and a pawl. The ratchet and the pawl are both rotatably mounted on the ratchet mounting seat, and when the movable sleeve moves toward the compression spring side, the pawl is engaged with the ratchet teeth of the ratchet to limit the rotation of the ratchet.

[0015] Furthermore, the ratchet pawl assembly also includes a reset spring, and when the movable sliding sleeve moves toward the light hole sliding sleeve, the reset spring can reset the pawl that is pushed away by the ratchet.

[0016] A 600-800-meter-class drilling rig comprises a frame with a mobile crawler, a mud pump mounted on the frame, an engine assembly, a hydraulic oil tank, a drilling assembly and an operating console. The drilling assembly comprises the above-mentioned drilling rig power head with a drill rod reducer connector.

[0017] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0018] The present invention adds a booster component and utilizes the elastic force of a compression spring to continuously apply thrust to the first fastening member and the second fastening member, so that after the sleeve is worn, it can automatically push the first fastening member and the second fastening member to re-close the drill pipe without stopping for adjustment, thereby significantly improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A structural schematic diagram of a drilling rig power head with a drill pipe reducer connector provided in Example 1 of the present invention;

[0021] Figure 2 It is a cross-sectional view of the connection relationship between the smooth hole sleeve, the threaded sleeve and the movable sleeve;

[0022] Figure 3 is a cross-sectional view of the ratchet pawl assembly;

[0023] Figure 4 It is a structural schematic diagram of a 600 to 800 meter class drilling rig provided in Example 2 of the present invention.

[0024] Icons: 1-first fastening part, 2-second fastening part, 3-bright hole sleeve, 4-bolt rod, 5-threaded sleeve, 6-avoidance interval, 7-compression spring, 8-block, 9-protective cover, 10-ratchet and pawl assembly, 101-ratchet mounting seat, 102-ratchet, 103-pawl, 104-guide rack, 105-return spring, 11-movable sleeve, 100-frame, 200-mud pump, 300-engine assembly, 400-hydraulic oil tank, 500-drilling assembly, 600-operating console. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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 part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example 1

[0031] See also Figures 1 to 3As shown, this embodiment provides a drilling rig power head with a drill pipe reducer connector, including a power head body and a connector, the power head body and the connector are sleeved, the power head body is the prior art, including a core shaft and a rear end cover, a shell, a front end cover, a nozzle connection sleeve and a connector that are sequentially sleeved on the core shaft. The connector is in the shape of a cylindrical boss, and is composed of a first buckle 1 and a second buckle 2 of two symmetrically matched longitudinal boss surface structures, and the first buckle 1 and the second buckle 2 are buckled on the connector. Specifically, the edges of the first buckle 1 and the second buckle 2 are integrally formed with a light hole sliding sleeve 3, the light hole sliding sleeve 3 on the first buckle 1 and the light hole sliding sleeve 3 on the second buckle 2 are correspondingly arranged, a bolt rod 4 is inserted between the two corresponding light hole sliding sleeves 3 on the first buckle 1 and the second buckle 2, the bolt rod 4 is symmetrically provided with opposite threads about its center, the bolt rod 4 and the light hole sliding sleeve 3 are clearance-matched, and at the same time, the outer side of the corresponding light hole sliding sleeve 3 on the bolt rod 4 is connected with a thread The threaded sleeve 5 is in the shape of a cylindrical boss, the small diameter section of the threaded sleeve 5 extends into the light hole sleeve 3, and is tightly attached to the inner wall of the light hole sleeve 3 to form a sliding connection, and the large diameter section of the threaded sleeve 5 is in contact with the outer wall of the light hole sleeve 3, so that when installing the drill rod, by screwing the threaded sleeve 5, the large diameter section of the threaded sleeve 5 will apply a thrust to the light hole sleeve 3, so that under the action of the thrust, the first fastening member 1 and the second fastening member 2 approach each other, hold the drill rod tightly, and complete the clamping of the drill rod.

[0032] The connector further comprises a boosting component, which can always apply a thrust to the first fastening member 1 and / or the second fastening member 2, so that the first fastening member 1 and the second fastening member 2 maintain a tendency to move toward each other and hold the connector tightly. In this embodiment, the boosting assembly is provided on the first fastening member 1 and the second fastening member 2. Specifically, the boosting assembly is provided on the bolt rod 4 on the side where the first fastening member 1 and the second fastening member 2 are located. The boosting assembly includes a compression spring 7 and a movable sleeve 11. The compression spring 7 and the movable sleeve 11 are both sleeved on the bolt rod 4, and one end of the compression spring 7 is connected to the abutment 8 at the end of the bolt rod 4, and the other end of the compression spring 7 is connected to the movable sleeve 11. The movable sleeve 11 abuts against the outer wall of the light hole sleeve 3. At the same time, an avoidance groove is provided on the side surface of the movable sleeve 11 that is in contact with the light hole sleeve 3. The large diameter section of the threaded sleeve 5 is slidably accommodated in the avoidance groove, and an avoidance interval 6 is left between the end of the large diameter section of the threaded sleeve 5 and the bottom of the avoidance groove. Therefore, when the sleeve mouth is worn, a gap will be generated between the first fastening member 1, the second fastening member 2 and the drill rod. At this time, the movable sleeve 11 is pushed by the compression spring 7 and will transfer the thrust to the light hole sleeve 3. After the light hole sleeve 3 is pushed, it will drive the first fastening member 1 and the second fastening member 2 to approach each other and re-hold the drill rod. During the whole process, the compression spring 7 is always in a compressed state. Every time the sleeve mouth is worn a little, the compression spring 7 will push the first fastening member 1 and the second fastening member 2 to shrink the holding radius a little, so that the connector always holds the drill rod tightly and will not fall off. The setting of the avoidance space provides movable space for the movement of the movable sleeve 11.

[0033] Considering that the drill rod will vibrate during the actual operation, and when the sleeve mouth is worn, the first fastening member 1 and the second fastening member 2 limit the engagement radius by the thrust of the compression spring 7. At this time, the outer side of the light hole sleeve 3 is not abutted and limited by the threaded sleeve 5. Therefore, in this case, there is a possibility that the mechanical vibration overcomes the elastic force of the compression spring 7 to expand the first fastening member 1 and the second fastening member 2 and the drill will fall off. To prevent this from happening, the booster assembly also includes a backstop assembly that prevents the moving sleeve 11 from moving toward the side of the compression spring 7. The backstop assembly includes a ratchet pawl assembly 10 and a guide rack 104. The ratchet pawl assembly 10 is fixedly connected to the moving sleeve 11. The blocks 8 at both ends of the bolt rod 4 are crossed by a protective cover 9. The guide rack 104 is installed on the inner top surface of the protective cover 9 and meshes with the ratchet 102 in the ratchet pawl assembly 10. The ratchet pawl assembly 10 includes a U-shaped ratchet mounting seat 101, a ratchet 102 and a pawl 103. The ratchet mounting seat 101 is fixed to the upper top surface of the movable sleeve 11. The ratchet 102 and the pawl 103 are both mounted on the ratchet mounting seat 101 by pivot rotation, with the ratchet 102 on the top and the pawl 103 on the bottom. The mounting relationship between the ratchet 102 and the pawl 103 needs to satisfy the following requirements: when the movable sleeve 11 moves toward the side of the light hole sleeve 3, the ratchet 102 can push aside the pawl 103 and rotate freely; when the movable sleeve 11 moves toward the side of the compression spring 7, the pawl 103 is stuck in the ratchet teeth of the ratchet 102, and the end of the pawl 103 away from the ratchet 102 is pressed against the ratchet mounting seat 101, so that the pawl 103 cannot rotate, thereby limiting the rotation of the ratchet 102. At the same time, the ratchet pawl assembly 10 also includes a reset spring 105, which is vertically installed in the slide groove of the ratchet mounting seat 101. A top block is fixed on the top of the reset spring 105 to push the pawl 103 to rotate. The top block abuts against the protrusion on the pawl 103. When the movable sleeve 11 moves toward the side of the light hole sleeve 3, the reset spring 105 can reset the pawl 103 that is pushed away by the ratchet 102.

[0034] From the above content, it can be seen that the present embodiment discloses a drilling rig power head with a drill pipe reducer connector, which has a power head body and a connector. When the sleeve opening of the connector is worn, the booster assembly is provided, and the compression spring 7 of the booster assembly is used to apply thrust to the movable sleeve 11, so as to push the light hole sleeve 3 with the help of the thrust, drive the first fastening part 1 and the second fastening part 2 to approach each other, continuously hold the drill pipe, and prevent the drill from falling. At the same time, a back-off assembly is provided to prevent the drill from falling due to mechanical vibration of the drill pipe.

[0035] Example 2

[0036] See also Figure 4As shown, this embodiment discloses a 600 to 800 meter-class drilling rig, including a frame 100 with a mobile crawler, a mud pump 200 installed on the frame 100, an engine assembly 300, a hydraulic oil tank 400, a drilling assembly 500 and an operating console 600, all of which are prior art. Different from the prior art, the drilling assembly 500 includes the drilling rig power head with a drill pipe reducer connector as described in Example 1.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drilling rig power head with a drill pipe reducer connector, comprising a power head body and a connector, wherein the connector of the power head body is sleeved with the connector, and the connector comprises a first fastening member (1) and a second fastening member (2) which are mutually matched and buckled and arranged on the connector, and characterized in that: The connector further comprises a boosting component, wherein the boosting component is capable of constantly applying a thrust to the first fastening member (1) and / or the second fastening member (2), so that the first fastening member (1) and the second fastening member (2) maintain a tendency to move towards each other and tightly hold the connector; The edges of the first fastening member (1) and the second fastening member (2) are both provided with a light hole sliding sleeve (3); the light hole sliding sleeve (3) on the first fastening member (1) and the light hole sliding sleeve (3) on the second fastening member (2) are provided correspondingly; a bolt rod (4) is passed between the two corresponding light hole sliding sleeves (3) on the first fastening member (1) and the second fastening member (2); threaded sliding sleeves (5) for limiting the engagement radius of the first fastening member (1) and the second fastening member (2) are provided correspondingly on both sides of the bolt rod (4); The boosting assembly is arranged on the bolt rod (4) located on the side where the first fastening member (1) and / or the second fastening member (2) are located, and the boosting assembly comprises a compression spring (7) and a movable sleeve (11), one end of the compression spring (7) is connected to a stop block (8) at the end of the bolt rod (4), the other end of the compression spring (7) is connected to the movable sleeve (11), and the movable sleeve (11) is in contact with the outer side of the light hole sleeve (3); The boosting assembly also includes a back-stop assembly for preventing the movable sleeve (11) from moving toward the compression spring (7), the back-stop assembly including a ratchet pawl assembly (10) and a guide rack (104), the ratchet pawl assembly (10) being fixedly connected to the movable sleeve (11), and the guide rack (104) being meshed with a ratchet (102) in the ratchet pawl assembly (10).

2. The drilling rig power head with a drill pipe reducer connector according to claim 1, characterized in that: The threaded sleeve (5) is in the shape of a cylindrical boss; the small diameter section of the threaded sleeve (5) extends into the light hole sleeve (3), and the large diameter section of the threaded sleeve (5) abuts against the outer side of the light hole sleeve (3).

3. The drilling rig power head with a drill pipe reducer connector according to claim 1, characterized in that: A relief groove is provided on the surface of one side of the movable sleeve (11) that is in contact with the light hole sleeve (3); the end of the threaded sleeve (5) is accommodated in the relief groove, and a relief area (6) is left between the end of the threaded sleeve (5) and the bottom of the relief groove.

4. The drilling rig power head with a drill pipe reducer connector according to claim 1, characterized in that: The ratchet pawl assembly (10) comprises a U-shaped ratchet mounting seat (101), a ratchet (102) and a pawl (103); the ratchet (102) and the pawl (103) are both rotatably mounted on the ratchet mounting seat (101); and when the movable sleeve (11) moves toward the compression spring (7), the pawl (103) is engaged with the ratchet teeth of the ratchet (102) to limit the rotation of the ratchet (102).

5. The drilling rig power head with a drill pipe reducer connector according to claim 4, characterized in that: The ratchet pawl assembly (10) further comprises a reset spring (105). When the movable sleeve (11) moves toward the side of the light hole sleeve (3), the reset spring (105) can reset the pawl (103) that is pushed away by the ratchet wheel (102).

6. A 600 to 800 meter drilling rig, characterized in that: The invention comprises a frame (100) with movable tracks, a mud pump (200) mounted on the frame (100), an engine assembly (300), a hydraulic oil tank (400), a drilling assembly (500) and an operating console (600), wherein the drilling assembly (500) comprises a drilling rig power head with a drill pipe reducer as claimed in any one of claims 1 to 5.

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