A water drilling rig connector

Abstract

The present invention discloses a water drilling machine connector, including a core shaft, a driving rod installed in the core shaft, and a handle sleeved outside the core shaft; the core shaft is also provided with a guide groove, and the guide groove guides the handle to rotate along the central axis of the core shaft or guides the handle to slide along the central axis of the core shaft; the handle is provided with a first slide groove inside, the driving rod is provided with a second slide groove, and a ball is provided between the first slide groove and the second slide groove; the handle is also provided with a top screw, and one end of the top screw is located on one side of the ball after passing through the first slide groove. In summary, since the top screw is located on one side of the ball, it can effectively solve the problem that the top screw or the ball automatically falls off due to wear caused by the top screw directly pressing against the ball; at the same time, it can also effectively avoid the problem that the top screw and the ball are locked with each other due to the top screw pressing against the ball, thereby affecting the smooth disassembly and assembly of the drill bit.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling equipment, in particular to a connecting head of a water drilling machine. Background Art

[0002] A water drill is a drilling device. The prior art with announcement number CN222315082U is a water drill head adapter previously applied by the applicant. The specific technical solution is: a ring groove for partially inserting a ball is provided on the inner wall of the handle, and a clamping groove for partially inserting a ball is provided on the outer wall of the driving rod. The handle can rotate in a circumferential direction after being matched with the ball. The positioning member in this embodiment is also a steel ball. A hole groove for the ball to pass through is opened on the handle in this embodiment. The hole groove is blocked after the ball is installed. This embodiment adopts a top screw for blocking. When installing, the clamping groove of the driving rod is first matched with the through groove position on the main body, and then the installation hole groove position on the handle is matched with the through groove position.

[0003] It can be seen from this that the above solution is to use the top screw to directly push on the steel ball. The problems with this solution are as follows: in actual application, when encountering hard objects such as steel bars, the torque is too large, which will damage the top screw or the ball bearing, causing the connector to automatically unlock and cause the drill bit to fall off. At the same time, the top screw and the ball bearing will also be locked to each other, causing the handle to be locked on the main body, affecting the disassembly of the drill bit. Summary of the invention

[0004] The object of the present invention is to provide a connector for a water drilling rig to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a water drilling rig connector, comprising a core shaft, a driving rod installed in the core shaft, and a handle sleeved outside the core shaft; wherein, an expansion connector is also provided at one end of the core shaft, and one end of the driving rod is slidably matched with the expansion connector; a guide groove is also provided on the core shaft, and the guide groove guides the handle to rotate along the central axis of the core shaft or guides the handle to slide along the central axis of the core shaft; a first slide groove is provided inside the handle, a second slide groove is provided on the driving rod, and a ball is provided between the first slide groove and the second slide groove; a top screw is also provided on the handle, and one end of the top screw is located on one side of the ball after passing through the first slide groove.

[0006] As a preferred technical solution of the present invention: the guide groove includes a first guide portion and a second guide portion, one end of the first guide portion is connected to the second guide portion; wherein the central axis of the first guide portion is perpendicular to the central axis of the second guide portion, and the central axis of the second guide portion is parallel to the central axis of the core shaft.

[0007] As a preferred technical solution of the present invention: the inner diameter of the first sliding groove is greater than the outer diameter of the ball.

[0008] As a preferred technical solution of the present invention: one end of the handle is connected to the core shaft through a spring, and the spring causes the handle to slide along the central axis of the core shaft.

[0009] As a preferred technical solution of the present invention: the handle is further provided with an oblique groove, the core shaft is further provided with a pin, and the rotation of the handle on the core shaft is limited by the cooperation between the pin and the oblique groove.

[0010] By adopting the above technical scheme, the beneficial effect of the present invention is as follows: since the top screw is located on one side of the ball, it can effectively solve the problem that the top screw or the ball automatically falls off due to wear caused by the top screw directly pressing against the ball; at the same time, it can also effectively avoid the problem that the top screw and the ball are locked with each other due to the top screw pressing against the ball, thereby affecting the smooth disassembly and assembly of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0012] Figure 2 It is a schematic diagram of the cutaway end of the main structure of the present invention;

[0013] Figure 3 It is a cross-sectional schematic diagram of the main structure of the present invention;

[0014] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0015] Figure 5 It is an exploded schematic diagram of the main structure of the present invention;

[0016] Figure 6 It is a schematic diagram of the main structure of the mandrel of the present invention;

[0017] Figure 7 It is a schematic diagram of the cutaway structure of the handle of the present invention.

[0018] In the figure: 1. handle; 2. connecting piece; 3. core shaft; 30. guide groove; 31. first guide part; 32. second guide part; 4. expansion connector; 5. ball bearing; 6. top screw; 7. first slide groove; 8. spring; 9. pin; 10. second slide groove; 11. driving rod; 12. internal threaded hole; 13. inclined groove. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0020] See also Figure 1-7 The present invention provides an embodiment: a water drill connector, comprising a mandrel 3, a driving rod 11 installed in the mandrel 3, and a handle 1 sleeved outside the mandrel 3; one end of the mandrel 3 is also provided with an expansion connector 4, and one end of the driving rod 11 is slidably matched with the expansion connector 4; when in use, the mandrel 3 is connected to the electric drill through the connector 2. The structure of the connector 2 and the linkage principle between the expansion connector 4 and the driving rod 11 are all referred to the prior art in the background technology.

[0021] A guide groove 30 is also provided on the core shaft 3, and the guide groove 30 guides the handle 1 to rotate along the central axis of the core shaft 3 or guides the handle 1 to slide along the central axis of the core shaft 3; a first slide groove 7 is provided inside the handle 1, a second slide groove 10 is provided on the driving rod 11, and a ball 5 is provided between the first slide groove 7 and the second slide groove 10; a top screw 6 is also provided on the handle 1, and one end of the top screw 6 passes through the first slide groove 7 and is located on one side of the ball 5.

[0022] To sum up, since the top screw 6 is located on one side of the ball 5, it can effectively solve the problem that the top screw 6 or the ball 5 automatically falls off due to wear caused by the top screw 6 directly pressing against the ball 5; at the same time, it can also effectively avoid the problem that the top screw 6 and the ball 5 are locked with each other due to the top screw 6 pressing against the ball 5, thereby affecting the smooth disassembly and assembly of the drill bit.

[0023] In addition, the top screw 6 is threadedly matched with the internal threaded hole 12 provided on the handle 1. Therefore, the distance that the top screw 6 extends into the handle 1 can be adjusted by tightening or loosening the top screw 6 in the internal threaded hole 12 to expand the contact area between the top screw 6 and the ball 5; wherein, the top screw 6 does not contact the outer wall surface of the core shaft 3 during use.

[0024] Furthermore, the guide groove 30 includes a first guide portion 31 and a second guide portion 32, and one end of the first guide portion 31 is connected to the second guide portion 32; wherein the central axis of the first guide portion 31 is perpendicular to the central axis of the second guide portion 32, and the central axis of the second guide portion 32 is parallel to the central axis of the core shaft 3.

[0025] Preferably, the guide groove 30, the ball 5 and the top screw 6 are three in number and evenly distributed;

[0026] When the expansion head needs to be locked, rotate the handle 1 in clockwise direction so that the adjacent top screw 6 located on the right side of the ball 5 pushes the ball 5 to roll clockwise along the first guide portion 31, so that the ball 5 is located on the first guide portion 31, thereby locking the axial movement of the drive rod 11 and putting the expansion head in an expanded state.

[0027] When the drill bit needs to be disassembled: Figure 2 As shown, when the handle 1 causes the top screw 6 to rotate counterclockwise, the balls 5 and the top screw 6 that are close together are separated. As the rotation continues, the next top screw 6 causes the balls 5 to slide along the first guide portion 31 toward the second guide portion 32 from the other side of the balls 5.

[0028] like Figure 3 As shown, after the ball 5 enters the second guide portion 32, the handle 1 is slid downward and the ball 5 located in the first slide groove 7 and the second slide groove 10 can prompt the drive rod 11 to move downward along the second guide portion 32. At this time, the expansion connector 4 linked to the drive rod 11 shrinks toward the inside of the core shaft 3, thereby facilitating the separation of the drill bit and the expansion connector 4.

[0029] In addition, since the guide groove 30 is provided on the core shaft 3 and is used to guide the sliding of the handle 1 or the rotation of the handle 1, the processing difficulty and the processing cost of the core shaft can be reduced compared with the prior art.

[0030] On the basis of the above scheme, since the inner diameter of the first slide groove 7 is larger than the outer diameter of the ball 5, the ball 5 has a larger travel space in the first slide groove 7, so that the handle 1 has a free sliding space along the axial direction of the core shaft 3. Therefore, when the drill bit and the expansion connector 4 are locked, the handle 1 slides back and forth in the free sliding space to generate an impact force, and then the impact force is used to facilitate the smooth separation of the expansion connector 4 and the drill bit.

[0031] Furthermore, one end of the handle 1 is connected to the core shaft 3 via a spring 8, and the spring 8 causes the handle 1 to slide along the central axis of the core shaft 3. Therefore, the spring 8 can be used to cause the handle 1 to quickly reset without the action of external force.

[0032] In order to prevent the handle 1 from rotating counterclockwise during use, the core shaft 3 is further provided with a pin 9, and the handle 1 is further provided with an inclined groove 13, and the rotation direction of the handle 1 is limited by the inclined groove 13. Therefore, when the pin 9 is stuck in the inclined groove 13, the handle 1 can be further prevented from rotating counterclockwise due to shaking during the rotation of the connector.

[0033] Based on this, the cooperation between the pin 9 and the bevel groove 13 can effectively prevent the handle 1 from rotating counterclockwise around the central axis of the core shaft 3 when the connector rotates, so as to ensure a reliable connection between the drill bit and the connector.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A water drilling rig connector, characterized in that: It comprises a core shaft (3), a driving rod (11) installed in the core shaft (3), and a handle (1) sleeved outside the core shaft (3); wherein one end of the core shaft (3) is further provided with an expansion connector (4), and one end of the driving rod (11) is slidably matched with the expansion connector (4); The core shaft (3) is further provided with a guide groove (30), and the guide groove (30) guides the handle (1) to rotate along the central axis of the core shaft (3) or guides the handle (1) to slide along the central axis of the core shaft (3); A first slide groove (7) is provided inside the handle (1), a second slide groove (10) is provided on the driving rod (11), and a ball (5) is provided between the first slide groove (7) and the second slide groove (10); The handle (1) is also provided with a top screw (6), and one end of the top screw (6) passes through the first slide groove (7) and is located on one side of the ball (5); The guide groove (30) comprises a first guide portion (31) and a second guide portion (32), wherein one end of the first guide portion (31) is connected to the second guide portion (32); wherein the central axis of the first guide portion (31) is perpendicular to the central axis of the second guide portion (32), and the central axis of the second guide portion (32) is parallel to the central axis of the core shaft (3).

2. A water drilling rig connector according to claim 1, characterized in that: The inner diameter of the first sliding groove (7) is greater than the outer diameter of the ball (5).

3. A water drilling rig connector according to claim 2, characterized in that: One end of the handle (1) is connected to the core shaft (3) via a spring (8), and the spring (8) causes the handle (1) to slide along the central axis of the core shaft (3).

4. A water drilling rig connector according to claim 3, characterized in that: The handle (1) is also provided with an oblique groove (13), and the core shaft (3) is also provided with a pin (9), and the rotation of the handle (1) on the core shaft (3) is restricted by the cooperation between the pin (9) and the oblique groove (13).

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