Water drilling machine connector

Abstract

The utility model provides a water drilling machine connector which comprises a main body connected with a water drilling machine, an expansion connector arranged at one end, connected with a drill bit, of the main body and capable of moving in the radial direction of the main body, a driving rod arranged on the main body and used for driving the expansion connector to move in the radial direction, and a water flow channel arranged in the driving rod. The main body is provided with a grip for driving the driving rod to move axially, the grip is in transmission fit with the driving rod through a transmission part, the expansion connector further comprises a positioning mechanism for positioning the expansion connector to be in an expansion state, and the positioning mechanism is arranged between the main body and the grip. The drill bit has the advantages that the positioning mechanism for positioning the expansion connector to be in the expansion state is arranged between the main body and the grip, so that the expansion connector can be stably kept in the expansion state, and the connection stability of the drill bit is ensured.

Description

Technical Field

[0001] The utility model 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. Publication No. CN118793380B is a water drill head adapter previously applied for by the applicant. The expansion connector in the adapter is maintained in an expanded state by spring elastic pushing. Since the end of the expansion connector is subjected to a large force, it will automatically shrink during use, resulting in an unstable connection and easy slippage of the thread, which causes the thread to wear faster and affects its service life. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to ensure the connection strength between the expansion connector and the drill bit.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A water drilling rig connector comprises a main body connected to the water drilling rig, an expansion connector which moves radially along the main body is provided at one end of the main body connected to the drill bit, a driving rod which drives the expansion connector to move radially is provided on the main body, the driving rod is axially movable in the main body, a water flow channel is provided in the driving rod, a handle which drives the driving rod to move axially is provided on the main body, the handle and the driving rod are matched through a transmission member, and also comprises a positioning mechanism which positions the expansion connector in an expanded state, and the positioning mechanism is provided between the main body and the handle.

[0006] Preferably, the positioning mechanism includes a positioning groove arranged on the outer surface of the main body, and the positioning groove includes a sliding part and a positioning part, wherein the sliding part is a linear groove, and the positioning part is a positioning clamping part arranged on one side of the sliding part, and a positioning piece is arranged between the handle and the main body, and when the positioning piece slides in the sliding part, it drives the driving rod to move axially in a linear manner, and when the positioning piece rotates with the handle and is clamped into the positioning clamping part, the axial movement of the handle is restricted, forcing the axial displacement of the transmission member and the driving rod to be restricted.

[0007] Preferably, the transmission member is arranged through the main body, and a through groove is provided on the main body for the transmission member to pass through and for the transmission member to axially displace within a certain range.

[0008] Preferably, the transmission member is a sphere, an annular groove for partially inserting the sphere is provided on the inner wall of the handle, and a groove for partially inserting the sphere is provided on the outer wall of the driving rod, and the handle and the sphere can rotate circumferentially after being matched.

[0009] Preferably, the expansion connector is a plurality of threaded blocks having threaded teeth on the outer surface, and an axially inclined guide rail structure is provided between the drive rod and each threaded block, and the threaded block is radially displaced by axial movement of the drive rod in conjunction with the axially inclined guide rail structure.

[0010] Preferably, the guide rail structure includes a slide groove arranged on the driving rod, and a clamping block slidably engaged in the slide groove of the driving rod is provided at one end of the threaded block connected to the driving rod, a radial protrusion is provided at the slide groove position on the driving rod, and the slide groove is arranged on the radial protrusion.

[0011] Preferably, a spring is provided between the handle and the main body to drive the handle to retract.

[0012] Preferably, sealing rings are provided between the main body and the handle at both ends of the through groove, and an anti-slip structure is provided on the surface of the handle.

[0013] Preferably, the main body is provided with a movable groove for radial movement of the expansion connector, and the inner wall of the movable groove is provided with a plurality of recessed portions for adding butter.

[0014] Beneficial effects of the utility model: the utility model provides a positioning mechanism between the main body and the handle to position the expansion connector in an expanded state, so that the expansion connector can be stably maintained in the expanded state, thereby ensuring the connection stability of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model without the handle;

[0017] Figure 3 It is a structural schematic diagram of the driving rod of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the expansion connector of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the main body of the utility model;

[0020] Figure 6 It is the front view of the utility model;

[0021] Figure 7 for Figure 6 Cross-sectional view at AA in the middle. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the embodiments.

[0023] like Figure 1-Figure 7A water drilling rig connector shown in the figure includes a main body 100 connected to the water drilling rig. In this embodiment, the main body 100 includes a first part 101 and a second part 102. An internal thread is provided at one end of the first part 101 and is threadedly connected to the water drilling rig. An external thread is provided at the other end of the first part 101, and an internal thread is provided at one end of the second part 102 connected to the first part 101. The second part 102 is threadedly assembled and connected to the first part 101. The end of the second part 102 is inserted into one end of the drill bit. The first part 101 and the second part 102 of the main body 100 are both hollow structures. An expansion connector 200 is provided at one end of the main body 100 connected to the drill bit. The expansion connector 200 has an expanded state and a contracted state. When the expansion connector 200 is in the expanded state, the outer surface of the expansion connector 200 is The expansion connector 200 protrudes from the outer surface of the main body 100 and is connected and fixed with the drill bit. When the expansion connector 200 is in the contracted state, the outer surface of the expansion connector 200 is concave in the outer surface of the main body 100, and the expansion connector 200 and the drill bit are freely pulled out. The expansion connector 200 moves radially along the main body 100. A driving mechanism for driving the expansion connector 200 to move radially is provided on the main body 100. The driving mechanism includes a driving rod 300, and a water flow channel is provided in the driving rod 300. The main body 100 is provided with a grip 400 for driving the driving rod 300 to move axially. The grip 400 and the driving rod 300 are matched through a transmission member 500. The transmission member 500 is arranged through the main body 100, and a through groove 103 is provided on the main body 100 for the transmission member 500 to pass through and for the transmission member 500 to move axially within a certain range. The axial displacement transmission of the driving rod 300 is realized by pushing the grip 400 and then transmitting it to the driving rod 300 through the transmission member 500. The transmission structure is relatively simple and low in cost. In this embodiment, a radially movable expansion connector 200 is provided so that when a drill bit needs to be connected, a driving mechanism drives the expansion connector 200 to be in an expanded state, so that the expansion connector 200 and the drill bit can be connected and fixed. When the drill bit needs to be removed, the driving mechanism is controlled to drive the expansion connector 200 to be in a contracted state to facilitate the removal of the drill bit. In order to keep the expansion connector 200 in an expanded state and prevent it from automatically retracting, a positioning mechanism for positioning the handle 400 is provided between the main body 100 and the handle 400 in this embodiment. The positioning mechanism includes a positioning groove 104 arranged on the outer surface of the main body 100, and the positioning groove 104 includes a sliding part 1041 and a positioning part 1042, wherein the sliding part 1041 is a linear groove, and the positioning part 1042 is a positioning clamping part set on one side of the sliding part 1041, and the linear groove and the clamping part are L-shaped. A positioning member 800 is provided between the handle 400 and the main body 100. When the positioning member slides in the sliding part 1041, it drives the drive rod 300 to move axially in a linear manner. When the positioning member rotates with the handle 400 and is clamped into the positioning clamping part, the axial movement of the handle 400 is restricted, forcing the transmission member 500 and the drive rod 300 to be restricted in axial displacement.

[0024] The transmission member 500 described in this embodiment is a sphere, which is a steel ball in this embodiment. An annular groove 401 for partially inserting the sphere is provided on the inner wall of the handle 400, and a slot 302 for partially inserting the sphere is provided on the outer wall of the driving rod 300. The handle 400 can rotate in a circumferential direction after cooperating with the sphere. The positioning member in this embodiment is also a steel ball. A hole 402 for the sphere to pass through is opened on the handle 400 in this embodiment. The hole 402 is blocked after the sphere is installed. The top screw 900 is used for blocking. When installing, the driving rod 300 is firstly screwed in. 0's card slot 302 corresponds to the position of the through slot 103 on the main body 100, and then the mounting hole slot 402 position on the handle 400 corresponds to the position of the through slot 103, first install the transmission parts 500 one by one, and when installing the next steel ball, rotate the handle 400 until the mounting hole slot 402 corresponds to the position of another through slot 103, and then install the steel ball, and complete the installation of all the transmission parts 500 in the same way, and then install the positioning part from the hole slot 402, and after the positioning part is installed, seal it to achieve the purpose of detachability.

[0025] The expansion connector 200 described in this embodiment is a plurality of threaded blocks with thread teeth on the outer surface, at least three, and evenly distributed in an annular shape. The main body 100 is provided with a movable groove 105 for radial movement of the expansion connector 200, and a plurality of recessed parts 1051 for adding butter are provided on the inner wall of the movable groove. The provision of the recessed part makes it convenient to add butter into the movable groove, and prevents the movable groove from rusting and being blocked by dirt. The outer end of each threaded block has an outwardly protruding thread tooth, and the thread teeth of each threaded block in the expanded state jointly form an external thread connected to the drill bit thread. The driving mechanism described in this embodiment includes a driving rod 300, and an axially inclined guide rail structure is provided between the driving rod 300 and each threaded block, and the threaded block is driven to move radially by the axial movement of the driving rod 300 in conjunction with the axially inclined guide rail structure. The guide rail structure of this embodiment includes a slide groove 301 arranged on the driving rod 300, and a block 201 is provided at one end where the thread block is connected to the driving rod 300, and the slide groove 301 and the block 201 are a T-shaped structure and an inverted T-shaped structure, respectively, and the two cooperate with each other. When the driving rod 300 moves forward, the thread block can only move radially, and at the same time, the thread block is affected by the guide rail structure, and the driving rod 300 moves forward, which will push the thread block to move outward, that is, the expansion state, and after expansion, it can cooperate with the drill bit thread. When connecting the drill bit, the connector can be inserted into the drill bit first, and then the driving rod 300 can be driven forward to make the expansion connector 200 in the expansion state, so that the time of screwing the thread can be reduced, and the purpose of thread tight fit can be achieved by screwing it down at will. In order to facilitate production and processing in this embodiment, a radial protrusion is provided at the slide groove position on the driving rod, and the slide groove is provided on the radial protrusion. It is more convenient to process the slide groove on the radial protrusion, and it is not easy to break the knife.

[0026] A spring 600 is provided between the handle 400 and the main body 100 to drive the handle back. The spring not only helps the handle to return, but also generates static friction between the positioning piece and the positioning part in the expanded state, thereby further ensuring the stability of the expansion connector in the expanded state.

[0027] A sealing ring 700 is provided between the main body 100 and the handle 400 at both ends of the through slot 103. The handle 400 has an anti-skid structure on its surface. The sealing ring prevents dust and water from entering the transmission member 500, and the anti-skid structure facilitates the user to drive the driving rod 300.

[0028] In this embodiment, a water flow channel is provided inside the driving rod 300, and sealing rings are provided between the outer surfaces of the front and rear sections of the driving rod 300 and the main body 100 to allow water to flow from the inside of the driving rod 300 and prevent water from entering the transmission part 500, thereby ensuring the service life of internal parts.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, simple changes and substitutions by ordinary technicians in this field are within the protection scope of the utility model.

Claims

1. A water drilling rig connector, comprising a main body connected to the water drilling rig, an expansion connector that moves radially along the main body is provided at one end of the main body connected to the drill bit, a driving rod that drives the expansion connector to move radially is provided on the main body, the driving rod is axially movable in the main body, a water flow channel is provided in the driving rod, a grip that drives the driving rod to move axially is provided on the main body, the grip and the driving rod are matched through a transmission member, and the characteristics are: It also includes a positioning mechanism for positioning the expansion connector in an expanded state, and the positioning mechanism is arranged between the main body and the handle.

2. A water drilling rig connector as claimed in claim 1, characterized in that: The positioning mechanism includes a positioning groove arranged on the outer surface of the main body, and the positioning groove includes a sliding part and a positioning part, wherein the sliding part is a linear groove, and the positioning part is a positioning clamping part arranged on one side of the sliding part, and a positioning piece is arranged between the handle and the main body, and when the positioning piece slides in the sliding part, it drives the driving rod to move axially linearly, and when the positioning piece rotates with the handle and is clamped into the positioning clamping part, the axial movement of the handle is restricted, forcing the axial displacement of the transmission piece and the driving rod to be restricted.

3. A water drilling rig connector as claimed in claim 2, characterized in that: The transmission member is arranged through the main body, and a through groove is arranged on the main body for the transmission member to pass through and for the transmission member to axially move within a certain range.

4. A water drilling rig connector as claimed in claim 3, characterized in that: The transmission member is a sphere, and a ring groove for partially inserting the sphere is provided on the inner wall of the handle, and a clamping groove for partially inserting the sphere is provided on the outer wall of the driving rod. The handle and the sphere can rotate circumferentially after being matched.

5. A water drilling rig connector as claimed in claim 1, characterized in that: The expansion joint is a plurality of threaded blocks with threaded teeth on the outer surface, and an axially inclined guide rail structure is provided between the drive rod and each threaded block. The threaded block is radially displaced by axial movement of the drive rod and the axially inclined guide rail structure.

6. A water drilling rig connector as claimed in claim 5, characterized in that: The guide rail structure includes a slide groove arranged on the driving rod, a clamping block slidably engaged in the slide groove of the driving rod is provided at one end of the threaded block connected to the driving rod, a radial protrusion is provided at the slide groove position on the driving rod, and the slide groove is arranged on the radial protrusion.

7. A water drilling rig connector as claimed in claim 1, characterized in that: A spring for driving the handle to retreat is arranged between the handle and the main body.

8. A water drilling rig connector as claimed in claim 3, characterized in that: Sealing rings are arranged between the main body and the handle at both ends of the through groove, and an anti-slip structure is arranged on the surface of the handle.

9. A water drilling rig connector as claimed in claim 1, characterized in that: The main body is provided with a movable groove for radial movement of the expansion connector, and the inner wall of the movable groove is provided with a plurality of recessed parts for adding butter.

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