A threaded drill rod capable of forward and reverse rotation for construction

Abstract

The present invention discloses a threaded drill rod that can be rotated forward and backward for construction, and relates to the technical field of drill rod joints. The surface of the first drill rod is provided with an anti-falling mechanism, and the surface of the first drill rod body is provided with a clamping mechanism. The surface of the first drill rod body is provided with a clamping mechanism, and the clamping mechanism is used to realize the rotation of the drill rod in the forward and reverse directions. The anti-falling mechanism includes a connecting unit, and the connecting unit is provided on the surface of the first drill rod body. This threaded drill rod that can be rotated forward and backward for construction is provided with a clamping mechanism. The spline shaft and the spline groove connection method realizes a greater torque and transmits an axial pressure structure, and the freely movable thread sleeve and the external thread connection realize an axial tension transmission structure, which effectively solves the engineering drilling drill rod that people urgently need in engineering practice. It has a reasonable structure, is strong and durable, is easy to connect, and is widely used, which is more conducive to actual construction needs.

Description

Technical Field

[0001] The invention relates to the technical field of drill rod joints, in particular to a construction-use threaded drill rod capable of forward and reverse rotation. Background Art

[0002] Threaded drill rods are the most widely used in the construction of pile holes for geological drilling, engineering surveys, soil anchoring, foundation reinforcement, etc. A drill rod connector is usually used to connect the drill rod to the drill bit, at which time a threaded drill rod is used.

[0003] Publication No. CN118933594A discloses a drill rod that can prevent falling after the threaded connection fails, including a drill rod body, the axial rear end of the drill rod body is fixedly connected to a drill rod female joint assembly, the axial front end of the drill rod body is fixedly connected to a drill rod male joint assembly, the drill rod male joint assembly includes a drill rod male joint, an insert rod and a retaining ring are coaxially arranged in the drill rod male joint, and the drill rod female joint assembly includes a drill rod female joint, a spring seat is arranged in the drill rod female joint, and a ball, a spring seat cap and a spring are arranged on the spring seat. The drill rod of the present invention is structurally optimized, and a connecting rod is arranged inside the drill rod male joint. When the drill rod male joint and the drill rod female joint are engaged, the insert rod is in a locked state. When the drill rod thread breaks, the insert rod that remains in a locked state can prevent the remaining drill rod from falling into the bottom of the hole. The drill rod in the hole can be pulled out of the hole by transmitting tension using the insert rod, saving manpower and material resources, and providing technical equipment guarantees for intelligent drilling construction in coal mines.

[0004] Announcement No. CN103089165A discloses a double-step thread buckle for connecting drilling drill pipes, which includes a cylindrical pin component and an annular sleeve component, the front end of the pin component is provided with a male thread, the inner wall of the sleeve component is provided with a female thread, and the pin component and the sleeve component are connected by a thread, characterized in that the pin component is provided with a first step surface and a second step surface in sequence, the first step surface is located between the second step surface and the male thread, and the inner wall of one end of the sleeve component connected to the pin component is provided with a first shoulder and a second shoulder in sequence, the first shoulder is located between the second shoulder and the female thread, the first shoulder coincides with the first step surface, and the second shoulder coincides with the second step surface. The advantage of the present invention is that it can achieve multiple seals and can withstand higher strength and torque, fully meeting the drilling needs of deep wells and high-difficulty wells, and at the same time can effectively extend the service life of the drill pipe.

[0005] The above-mentioned drill rod can usually only rotate in the forward direction, but in some engineering drilling, the drill rod needs to rotate both forward and reverse, and the threaded drill rod can only withstand unidirectional torque. When reversing, the drill rod joint will be unfastened, causing the drill rod to fall off, and the substantial needs of engineering drilling cannot be met. Summary of the Invention

[0006] The object of the present invention is to provide a construction threaded drill rod that can rotate forward and backward to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a construction-use threaded drill rod capable of forward and reverse rotation, comprising a first drill rod body and a second drill rod body, wherein the surface of the first drill rod is provided with an anti-falling mechanism;

[0008] The surface of the first drill rod body is provided with a clamping mechanism, and the clamping mechanism is used to realize the rotation of the drill rod in the forward and reverse directions;

[0009] The anti-falling mechanism includes a connecting unit, which is arranged on the surface of the first drill rod body and is used to increase the stability between the first drill rod body and the second drill rod body;

[0010] The anti-falling mechanism further includes an anti-slip unit, which is arranged on the surface of the first drill rod body and is used to prevent the clamping mechanism from separating.

[0011] Preferably, the clamping mechanism includes a spline shaft, which is fixedly mounted on one end of the first drill rod body, and a clamping block is fixedly mounted on one end of the second drill rod body, and a spline groove is provided in the inner cavity of the clamping block, and the inner cavity of the spline groove is slidably connected to the surface of the spline shaft, a threaded body is fixedly mounted on the surface of the first drill rod, and a threaded sleeve is slidably connected to the surface of the second drill rod, and the inner cavity of the threaded sleeve is threadedly connected to the surface of the threaded body.

[0012] Preferably, the connecting unit includes a first clamping rod, which is fixedly installed in the inner cavity of the spline groove. A placement hole is opened inside the first drill rod body, and the inner cavity of the placement hole is rotatably connected to the second clamping rod. The first end of the second clamping rod passes through the inner cavity of the spline shaft, and one end of the second clamping rod is fixedly installed with a gear. The inner wall of the first drill rod body is slidably connected with a tooth plate, and the tooth plate is engaged with the teeth of the gear.

[0013] Preferably, a sliding groove is provided on the surface of the second clamping rod, a sliding block is fixedly mounted on the surface of the first clamping rod, and the surface of the sliding block is slidably connected to the inner cavity of the sliding groove.

[0014] Preferably, a limiting plate is fixedly mounted on the surface of the second clamping rod, and the bottom of the limiting plate contacts the inner wall of the placement hole.

[0015] Preferably, a guide groove is provided on the inner wall of the placement hole, a guide block is fixedly mounted on the top of the tooth plate, and the surface of the guide block is slidably connected to the inner cavity of the guide groove.

[0016] Preferably, a spring is fixedly provided on the inner wall of the placement hole, one end of the spring is fixedly connected to the inner wall of the placement hole, the other end of the spring is fixedly connected to the surface of the tooth plate, and one end of the tooth plate is used in conjunction with the inner wall of the threaded sleeve.

[0017] Preferably, a docking groove is provided on the top of the clamping block, a docking block is fixedly mounted on the surface of the first drill rod body, and the surface of the docking block is slidably connected to the inner cavity of the docking groove.

[0018] Preferably, the anti-slip unit includes an extension plate, which is rotatably connected to the inner wall of the first drill rod body, and the inner wall of the extension plate is slidably connected to a positioning rod, one end of the threaded sleeve is provided with a positioning groove, the inner cavity of the positioning groove is slidably connected to the surface of the positioning rod, the inner wall of the threaded sleeve is threadedly connected to a fixing rod, one end of the fixing rod passes through the inner cavity of the positioning groove, and one end of the fixing rod is threadedly connected to the surface of the positioning rod.

[0019] Preferably, a stopper is fixedly mounted on one end of the positioning rod, and the bottom of the stopper cooperates with the top of the extension plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention provides a clamping mechanism and a spline shaft and spline groove connection mode, which can withstand high torque and axial pressure, and allows the threaded sleeve to have a moderately movable connection structure relative to the threaded body, thereby realizing the transmission of axial tension structure, solving the engineering drilling drill rod that people urgently need in engineering practice. It has a reasonable structure, is strong and durable, is easy to connect, and is widely used, which is more conducive to actual construction needs.

[0022] 2. The present invention provides a connecting unit. When the threaded sleeve is tightened and wrapped around the first drill rod body, it not only provides basic fixing force through threaded connection, but also realizes additional locking through the interaction of the tooth plate, gear, first clamping rod and second clamping rod. The connection between the first drill rod body and the second drill rod body is more firmly connected, further avoiding separation between the first drill rod body and the second drill rod body, and further increasing the working stability.

[0023] 3. The present invention provides an anti-slip unit, and the combination of the positioning rod and the fixing rod not only enhances the stability of the connection, but also improves its anti-loosening ability. Even under high vibration or high torque conditions, this design can ensure the firmness of the connection, reduce the potential dangers caused by loosening, and improve the efficiency of drilling operations. The stable connection ensures continuous and efficient work during drilling, thereby improving the overall operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 Schematic diagram of the structure of the first drill rod body of the present invention;

[0026] Figure 3 Schematic diagram of the structure of the second drill rod body of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the tooth plate and spring of the present invention;

[0028] Figure 5 This is a cross-sectional view of the structure of the card block of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the threaded sleeve of the present invention;

[0030] Figure 7 Schematic diagram of the structure of the positioning rod of the present invention.

[0031] In the figure: 1. first drill rod body; 2. anti-falling mechanism; 21. connecting unit; 2101. first clamping rod; 2102. placement hole; 2103. second clamping rod; 2104. gear; 2105. tooth plate; 2106. sliding groove; 2107. sliding block; 2108. limiting plate; 2109. guide groove; 2110. guide block; 2111. spring; 2112. docking groove; 2113. docking block; 22. anti-slip unit; 2201. extension plate; 2202. positioning rod; 2203. positioning groove; 2204. fixing rod; 2205. stopper; 3. clamping mechanism; 301. spline shaft; 302. clamping block; 303. spline groove; 304. threaded body; 305. threaded sleeve; 4. second drill rod body. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figure 1-Figure 7 The present invention provides a technical solution: a construction-use threaded drill rod capable of forward and reverse rotation, comprising a first drill rod body 1 and a second drill rod body 4, wherein an anti-falling mechanism 2 is provided on the surface of the first drill rod;

[0034] A clamping mechanism 3 is provided on the surface of the first drill rod body 1, and the clamping mechanism 3 is used to realize the rotation of the drill rod in the forward and reverse directions.

[0035] As a further limitation of the clamping mechanism 3 of the present invention, the clamping mechanism 3 includes a spline shaft 301, which is fixedly installed on one end of the first drill rod body 1, and a clamping block 302 is fixedly installed on one end of the second drill rod body 4. The inner cavity of the clamping block 302 is provided with a spline groove 303, and the inner cavity of the spline groove 303 is slidably connected to the surface of the spline shaft 301. A threaded body 304 is fixedly installed on the surface of the first drill rod, and a threaded sleeve 305 is slidably connected to the surface of the second drill rod. The inner cavity of the threaded sleeve 305 is threadedly connected to the surface of the threaded body 304. By setting the clamping mechanism 3, the connection method between the spline shaft 301 and the spline groove 303 can achieve a greater torque and axial pressure transmission structure, and the freely movable screw sleeve is connected to the external thread to achieve an axial tension transmission structure, which effectively solves the engineering drilling drill rod that people urgently need in engineering practice. It has a reasonable structure, is strong and durable, is easy to connect, and is widely used, which is more conducive to actual construction needs.

[0036] The specific implementation of this embodiment is as follows: insert the spline shaft 301 into the inner cavity of the spline groove 303, and pass the threaded sleeve 305 through the second drill rod body 4, and rotate the threaded sleeve 305 to thread the threaded sleeve 305 and the threaded body 304, thereby realizing the connection between the first drill rod body 1 and the second drill rod body 4. When the second drill rod rotates, the first drill rod body 1 can be driven to rotate regardless of forward drilling or reverse drilling, thus realizing the actual requirement that both forward drilling and reverse drilling can be performed without being disassembled at the drill rod joint.

[0037] Example 2: Please refer to Figure 1-Figure 7 The present invention provides a technical solution: a threaded drill rod that can rotate forward and backward for construction. The present invention makes corresponding improvements to the technical problems mentioned in the background technology. The anti-falling mechanism 2 includes a connecting unit 21, which is arranged on the surface of the first drill rod body 1. The connecting unit 21 is used to increase the stability between the first drill rod body 1 and the second drill rod body 4.

[0038] As a further limitation of the anti-falling mechanism 2 of the present invention, the connecting unit 21 includes a first clamping rod 2101, which is fixedly installed in the inner cavity of the spline groove 303. A placement hole 2102 is opened inside the first drill rod body 1. The inner cavity of the placement hole 2102 is rotatably connected to the second clamping rod 2103. The first end of the second clamping rod 2103 passes through the inner cavity of the spline shaft 301. One end of the second clamping rod 2103 is fixedly installed with a gear 2104. The inner wall of the first drill rod body 1 is slidably connected with a tooth plate 2105. The teeth of the tooth plate 2105 and the gear 2104 are mutually engaged. Meshing, one end of the tooth plate 2105 passes through the first drill rod 1 and is used in conjunction with the threaded sleeve 305. By setting the connecting unit 21, when the threaded sleeve 305 is tightened and wrapped around the first drill rod body 1, it not only provides basic fixing force through threaded connection, but also realizes additional locking through the interaction of the tooth plate 2105, gear 2104, first clamping rod 2101 and second clamping rod 2103. The connection between the first drill rod body 1 and the second drill rod body 4 is more firm, further avoiding separation between the first drill rod body 1 and the second drill rod body 4, and further increasing the stability of the work.

[0039] A sliding groove 2106 is provided on the surface of the second card rod 2103, and a sliding block 2107 is fixedly installed on the surface of the first card rod 2101. The surface of the sliding block 2107 is slidingly connected to the inner cavity of the sliding groove 2106. Through the sliding connection between the sliding groove 2106 and the sliding block 2107, when the first card rod 2101 contacts the second card rod 2103, the sliding block 2107 will enter the inner cavity of the sliding groove 2106. The sliding groove 2106 is arc-shaped, and the slider enters the inner cavity of the sliding groove 2106, which can avoid the shaking and separation between the first card rod 2101 and the second card rod 2103, thereby ensuring the stability of the two after contact.

[0040] A limit plate 2108 is fixedly installed on the surface of the second clamping rod 2103, and the bottom of the limit plate 2108 contacts the inner wall of the placement hole 2102. By setting the limit plate 2108, the moving distance of the second clamping rod 2103 can be limited to prevent the second clamping rod 2103 from moving.

[0041] A guide groove 2109 is provided on the inner wall of the placement hole 2102, and a guide block 2110 is fixedly installed on the top of the tooth plate 2105. The surface of the guide block 2110 is slidingly connected to the inner cavity of the guide groove 2109. Through the sliding connection between the guide groove 2109 and the guide block 2110, the movement of the tooth plate 2105 can be guided, so that the tooth plate 2105 can move horizontally.

[0042] A spring 2111 is fixedly provided on the inner wall of the placement hole 2102, one end of the spring 2111 is fixedly connected to the inner wall of the placement hole 2102, and the other end of the spring 2111 is fixedly connected to the surface of the tooth plate 2105. One end of the tooth plate 2105 is used in conjunction with the inner wall of the threaded sleeve 305. By setting the spring 2111, when the tooth plate 2105 slides toward the inner cavity of the placement hole 2102, the spring 2111 can be reset. When the user removes the threaded sleeve 305, under the reaction force of the spring 2111, the tooth plate 2105 can be moved toward the outside of the first drill rod body 1, thereby realizing the separation of the first clamping rod 2101 and the second clamping rod 2103, which is convenient for the user to separate the first drill rod body 1 and the second drill rod body 4.

[0043] A docking groove 2112 is provided on the top of the clamping block 302, and a docking block 2113 is fixedly installed on the surface of the first drill rod body 1. The surface of the docking block 2113 is slidably connected to the inner cavity of the docking groove 2112. The sliding connection between the docking groove 2112 and the docking block 2113 can facilitate the docking of the spline shaft 301 and the spline groove 303 more accurately, ensuring that the initial state of the first clamping rod 2101 and the second clamping rod 2103 is a separated state, and at the same time ensuring that the second clamping rod 2103 can be connected to the first clamping rod 2101 after rotating 90 degrees.

[0044] When the first drill rod body 1 is rotated, the gear 2104 is rotated to rotate 90 degrees.

[0045] Example 3: Please refer to Figure 1-Figure 7 The present invention provides a technical solution: a threaded drill rod that can be rotated forward and backward for construction. The present invention makes corresponding improvements to the technical problems mentioned in the background technology. The anti-falling mechanism 2 also includes an anti-slip unit 22, which is arranged on the surface of the first drill rod body 1. The anti-slip unit 22 is used to prevent the clamping mechanism 3 from separating.

[0046] As a further limitation of the anti-fall mechanism 2 of the present invention, the anti-slip unit 22 includes an extension plate 2201, which is rotatably connected to the inner wall of the first drill pipe body 1, and the inner wall of the extension plate 2201 is slidably connected to the positioning rod 2202, and one end of the threaded sleeve 305 is provided with a positioning groove 2203, and the inner cavity of the positioning groove 2203 is slidably connected to the surface of the positioning rod 2202, and the inner wall of the threaded sleeve 305 is threadedly connected to the fixing rod 2204, one end of the fixing rod 2204 passes through the inner cavity of the positioning groove 2203, and one end of the fixing rod 2204 is threadedly connected to the surface of the positioning rod 2202. By providing the anti-slip unit 22, the combination of the positioning rod 2202 and the fixing rod 2204 not only enhances the stability of the connection, but also improves its anti-loosening ability. Even under high vibration or high torque conditions, this design can ensure the firmness of the connection, reduce the potential dangers caused by loosening, and improve the efficiency of drilling operations. The stable connection ensures continuous and efficient work during drilling, thereby improving the overall operation efficiency.

[0047] A stopper 2205 is fixedly installed at one end of the positioning rod 2202. The bottom of the stopper 2205 cooperates with the top of the extension plate 2201. By setting the stopper 2205, the moving distance of the moving plate of the stopper 2205 can be limited, thereby realizing accurate threaded connection between the positioning rod 2202 and the fixed rod 2204.

[0048] The specific implementation of this embodiment is as follows: after the threaded sleeve 305 realizes the connection between the first drill rod body 1 and the second drill rod body 4, the positioning rod 2202 is inserted into the inner cavity of the positioning groove 2203, and the extension plate 2201 is rotated on the surface of the first drill rod body 1, which can facilitate the inner cavity of the positioning groove 2203 to coincide with the opening of the extension plate 2201. After the positioning rod 2202 enters the inner cavity of the positioning groove 2203, the position of the positioning rod 2202 is fixed by the fixing rod 2204, thereby achieving the fixation of the position of the threaded sleeve 305, avoiding the thread slippage phenomenon of the threaded sleeve 305 and separation, and further improving the stability of the first drill rod body 1 and the second drill rod body 4 after connection.

[0049] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A construction-use threaded drill rod capable of forward and reverse rotation, comprising a first drill rod body (1) and a second drill rod body (4), characterized in that: An anti-falling mechanism (2) is provided on the surface of the first drill rod; A clamping mechanism (3) is provided on the surface of the first drill rod body (1), and the clamping mechanism (3) is used to realize the rotation of the drill rod in forward and reverse directions; The anti-falling mechanism (2) comprises a connecting unit (21), the connecting unit (21) being arranged on the surface of the first drill rod body (1), and the connecting unit (21) being used to increase the stability between the first drill rod body (1) and the second drill rod body (4); The anti-falling mechanism (2) further comprises an anti-slip unit (22), the anti-slip unit (22) being arranged on the surface of the first drill rod body (1), and the anti-slip unit (22) being used to prevent the clamping mechanism (3) from separating; The clamping mechanism (3) comprises a spline shaft (301), the spline shaft (301) being fixedly mounted on one end of the first drill rod body (1), a clamping block (302) being fixedly mounted on one end of the second drill rod body (4), a spline groove (303) being provided in the inner cavity of the clamping block (302), the inner cavity of the spline groove (303) being slidably connected to the surface of the spline shaft (301), a threaded body (304) being fixedly mounted on the surface of the first drill rod, a threaded sleeve (305) being slidably connected to the surface of the second drill rod, and the inner cavity of the threaded sleeve (305) being threadedly connected to the surface of the threaded body (304); The connecting unit (21) comprises a first clamping rod (2101), the first clamping rod (2101) is fixedly mounted in the inner cavity of the spline groove (303), a placement hole (2102) is opened inside the first drill rod body (1), the inner cavity of the placement hole (2102) is rotatably connected to a second clamping rod (2103), a first end of the second clamping rod (2103) passes through the inner cavity of the spline shaft (301), a gear (2104) is fixedly mounted on one end of the second clamping rod (2103), a tooth plate (2105) is slidably connected to the inner wall of the first drill rod body (1), and the teeth of the tooth plate (2105) and the gear (2104) are meshed with each other; A sliding groove (2106) is provided on the surface of the second clamping rod (2103), a sliding block (2107) is fixedly mounted on the surface of the first clamping rod (2101), and the surface of the sliding block (2107) is slidably connected to the inner cavity of the sliding groove (2106); A spring (2111) is fixedly provided on the inner wall of the placement hole (2102), one end of the spring (2111) is fixedly connected to the inner wall of the placement hole (2102), the other end of the spring (2111) is fixedly connected to the surface of the tooth plate (2105), and one end of the tooth plate (2105) is used in conjunction with the inner wall of the threaded sleeve (305).

2. The construction-use threaded drill rod capable of forward and reverse rotation according to claim 1, characterized in that: A limiting plate (2108) is fixedly mounted on the surface of the second clamping rod (2103), and the bottom of the limiting plate (2108) is in contact with the inner wall of the placement hole (2102).

3. The construction-use threaded drill rod capable of forward and reverse rotation according to claim 1, characterized in that: A guide groove (2109) is provided on the inner wall of the placement hole (2102), and a guide block (2110) is fixedly installed on the top of the tooth plate (2105), and the surface of the guide block (2110) is slidably connected to the inner cavity of the guide groove (2109).

4. The construction-use threaded drill rod capable of forward and reverse rotation according to claim 1, characterized in that: A docking groove (2112) is provided on the top of the clamping block (302), a docking block (2113) is fixedly mounted on the surface of the first drill rod body (1), and the surface of the docking block (2113) is slidably connected to the inner cavity of the docking groove (2112).

5. The construction-use threaded drill rod capable of forward and reverse rotation according to claim 1, characterized in that: The anti-slip unit (22) includes an extension plate (2201), the extension plate (2201) is rotatably connected to the inner wall of the first drill rod body (1), the inner wall of the extension plate (2201) is slidably connected to a positioning rod (2202), one end of the threaded sleeve (305) is provided with a positioning groove (2203), the inner cavity of the positioning groove (2203) is slidably connected to the surface of the positioning rod (2202), the inner wall of the threaded sleeve (305) is threadedly connected to a fixing rod (2204), and one end of the fixing rod (2204) is threadedly connected to the surface of the positioning rod (2202).

6. The construction-use threaded drill rod capable of forward and reverse rotation according to claim 5, characterized in that: A stopper (2205) is fixedly mounted on one end of the positioning rod (2202), and the bottom of the stopper (2205) cooperates with the top of the extension plate (2201).

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