Drill rod stepping feeding clamp and feeding method

Abstract

The invention belongs to the field of mechanical design, and relates to a drill rod stepping feeding clamp and a feeding method.The drill rod stepping feeding clamp comprises a supporting assembly, a rod feeding assembly and a rod pressing assembly; the supporting assembly comprises supporting faces which are evenly distributed and provided with long sliding inclined faces and short limiting inclined faces, receding holes used for penetrating of the connecting rods and supporting rods used for fixing the rod feeding assembly. The rod feeding assembly comprises a feeding plate hinged to the supporting rod through a pin shaft, a power connecting piece connected with the oil cylinder and a multi-hole-site connecting rod connected with the feeding plate and the power connecting piece. The pressing rod assembly is fixed to the upper portion of the supporting assembly through a pressing rod bolt and comprises a pressing spring and a pressing rod. The feeding plate is provided with a feeding inclined face corresponding to the supporting face, and swing feeding is achieved through driving of the oil cylinder. Through precise mechanical control and reliable component cooperation, the stability and continuity of the drill rod in the feeding process are ensured, and therefore it is ensured that the drill rod stepping feeding clamp in different postures can effectively feed materials, and the requirement for effective and automatic feeding of a drilling machine in the underground multiple postures is met.

Description

Technical Field

[0001] The invention belongs to the field of mechanical design and relates to a drill rod step feeding clamp and a feeding method. Background Art

[0002] In the field of mechanical design, especially in various complex drilling projects, the design and application of drill rod stepping feeding mechanism has always been the focus of the industry. However, the existing drill rod feeding mechanism has exposed many problems and limitations in practical applications, such as complex structure, large volume, and poor feeding stability when the drilling rig changes its posture. These problems not only affect the use of automated loading and unloading in underground drilling projects, but also restrict the further development of related technologies.

[0003] First, the existing step-by-step feeding mechanism is mainly designed based on the feeding requirements of the ground material in a horizontal state. This mechanism uses the gravity of the material to achieve the lifting and falling of the material through a swing connecting rod mechanism, thereby achieving the gradual forward movement of the material. However, in underground drilling operations, due to the complexity of geological conditions and the variability of drilling inclination angles, the drill rod often needs to be drilled in multiple postures, which makes it difficult to keep the drill rod feeding trajectory in a horizontal state. Therefore, the traditional step-by-step feeding mechanism cannot achieve feeding of inclined trajectories.

[0004] Secondly, the existing drill pipe stepping feeding mechanism, especially the connecting rod retractor widely used in semi-automatic drilling rigs, has a relatively complex mechanism design and a large structural size. This not only increases the manufacturing cost and maintenance difficulty of the equipment, but also limits the flexibility and applicability of the equipment to a certain extent. Especially in the narrow underground working environment, such a large and complex mechanism is often difficult to be effectively applied, and may even cause interruption or failure of the operation due to space limitations. In addition, the connecting rod retractor also has the problem of significant difference in feeding effect between the end and the starting end of the stroke during the feeding process, which further reduces the accuracy and stability of the feeding.

[0005] In summary, the existing drill pipe step-by-step feeding mechanism has many problems and limitations in the underground operation environment, mainly because it cannot meet the step-by-step feeding mode of the inclined trajectory or has a complex structure and poor feeding reliability. These problems not only affect the efficiency and safety of drilling projects, but also restrict the further development of related technologies. Therefore, the industry urgently needs a more efficient, stable and reliable drill pipe step-by-step feeding mechanism and feeding method to meet the needs of modern drilling projects for efficient, safe and precise feeding. Summary of the invention

[0006] In view of this, an object of the present invention is to provide a drill rod step feeding clamp and a feeding method to solve the existing step feeding problem under an inclined feeding trajectory.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drill rod stepping feed clamp, comprising a support assembly, a feed rod assembly and a pressure rod assembly; the support assembly comprises a support surface with a long sliding inclined surface and a short limit inclined surface that are evenly distributed, a clearance hole for the connecting rod to pass through, and a support rod for fixing the feed rod assembly; the feed rod assembly comprises a feed plate hinged to the support rod through a pin shaft, a power connecting piece connected to a cylinder, and a multi-hole connecting rod connecting the feed plate and the power connecting piece;

[0008] The pressure rod assembly is fixed on the top of the support assembly by pressure rod bolts, and includes a compression spring and a pressure rod in contact with the drill rod; the feeding plate is provided with a feeding inclined surface corresponding to the support surface, and swing feeding is achieved by oil cylinder drive.

[0009] Optionally, the support assembly includes a connecting block welded to the support block to form a multi-station drill rod storage structure.

[0010] Optionally, the support rod is provided with a pin hole hinged to the delivery rod assembly, and the support block is provided with an ear seat for mounting the oil cylinder.

[0011] Optionally, the power connecting member is formed as a whole by a longitudinal connecting rod, a transverse connecting rod and an ear seat, and one end of the oil cylinder is hinged to the ear seat of the supporting assembly.

[0012] Optionally, the pressure rod support of the pressure rod assembly enables the pressure rod to always contact the drill rod surface through spring compression force.

[0013] Optionally, the connecting rod is provided with a plurality of pin holes, and an adjustable swing mechanism is formed through the pin shaft, the feeding plate and the power connecting piece.

[0014] A drill rod step feeding method uses a drill rod step feeding clamp as described above, comprising the following steps: the oil cylinder retracts to drive the power connecting piece to move horizontally, driving the connecting rod to swing around the pin hole of the support rod; the feed plate rises to make the drill rod slide along the feed inclined surface to the next workstation of the support assembly; when the oil cylinder extends and resets, the pressure rod forces the drill rod to fall into the limit inclined surface of the support surface to complete a single feed.

[0015] Optionally, during the swinging process of the feeding plate, the long inclined surface of the feeding inclined surface forms a continuous sliding path with the supporting surface.

[0016] Optionally, the drill rod is always in contact with the support surface or the feeding inclined surface under the action of the pressure rod spring force to prevent separation.

[0017] Optionally, the feed inclined surface of the feed plate forms a drill rod storage position through a short inclined surface when resetting.

[0018] Optionally, when the oil cylinder reciprocates, the longitudinal connecting rod and the transverse connecting rod of the power connecting member cooperate to produce parallel displacement.

[0019] Optionally, a clearance hole in the support assembly allows the connecting rod to move up and down during the swinging process.

[0020] The beneficial effects of the present invention are:

[0021] First, the present invention significantly optimizes the design of the downhole drill pipe feeding mechanism. By adopting a more compact and reasonable structural layout, the overall space occupied by the feeding mechanism is reduced, so that the mechanism can be flexibly and effectively used in a narrow downhole operating environment. This not only improves the continuity and stability of the drilling operation, but also brings great convenience to the installation, commissioning and maintenance of the equipment.

[0022] Secondly, the present invention realizes the interlocking function of feeding. Through the clever design, it ensures that the drill rod will not return to its original position due to external factors (such as vibration, impact, etc.) during the feeding process, thereby greatly improving the accuracy and success rate of feeding. This improvement undoubtedly has important practical significance and application value for drilling projects that require high-precision and high-stability feeding.

[0023] Furthermore, the present invention simplifies the design of the feeding mechanism. By reducing unnecessary components and complex mechanical structures, the manufacturing cost and maintenance difficulty of the equipment are reduced. At the same time, this simplified design also helps to improve the reliability and durability of the equipment and reduce operation interruptions caused by component wear or failure.

[0024] In addition, the invention also improves the multi-directional placement function of the feeding mechanism. This means that it can effectively feed the drill rod at different angles and postures, thereby adapting to more complex underground operating environments. This improvement not only broadens the application range of the equipment, but also provides a more flexible and diverse operating method for drilling projects.

[0025] Finally, the present invention achieves the above-mentioned many beneficial effects while maintaining high operating efficiency and safety. Through precise mechanical control and reliable component matching, the stability and continuity of the drill rod during the feeding process are ensured, thereby effectively improving the overall efficiency and operating quality of the drilling project.

[0026] In summary, the present invention brings many beneficial effects by optimizing the design of the downhole drill pipe feeding mechanism, realizing the interlocking function of feeding, simplifying the design of the feeding mechanism, and improving the multi-directional placement function of the feeding mechanism. These effects not only improve the efficiency and safety of drilling operations, but also lay a solid foundation for the further development of related technologies.

[0027] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0029] Figure 1 It is an overall schematic diagram of the present invention;

[0030] Figure 2 It is a schematic diagram of the support assembly of the present invention;

[0031] Figure 3 It is a schematic diagram of the rod delivery assembly of the present invention;

[0032] Figure 4 It is a schematic diagram of a pressure rod assembly of the present invention;

[0033] Figure 5 It is a schematic diagram of the support position of the rod member of the present invention;

[0034] Figure 6 It is a schematic diagram of the rod feeding position of the present invention.

[0035] Figure numerals: support assembly 1, support block 11, support surface 111, connecting rod clearance hole 112, connecting block 12, pin hole 131, support rod 13, ear seat 14, feeding rod assembly 2, feeding plate 21, feeding ramp 211, connecting ear seat 212, connecting rod 22 with multiple pin holes, longitudinal connecting rod 231, transverse connecting rod 232, ear seat 233, power connecting part 23, power cylinder 24, connecting pin 25, pressure rod assembly 3, compression spring 31, pressure rod bolt 32, pressure rod bracket 33, pressure rod 34. DETAILED DESCRIPTION

[0036] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0037] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0038] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are 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 direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0039] See also Figure 1 to Figure 6 , which is a drill rod stepping feeding clamp and feeding method, mainly composed of a support assembly 1, a rod feeding assembly 2 and a pressure rod assembly. The support assembly is the main body of the device, which can store drill rods in multiple positions. The rod feeding assembly 2 and the pressure rod assembly 3 are both installed on the support assembly; the rod feeding assembly 2 is installed on the support assembly and can rotate around the fixed point on the support assembly to realize the swing of the mechanism, thereby continuously pushing the drill rod on the support assembly away from the support assembly and sending it back to the next storage inclined surface of the lower support assembly, and continuously pushing the drill rod forward; the pressure rod assembly is to ensure that the drill rod never leaves the inclined surface of the support assembly and the rod feeding assembly, ensuring successful feeding of the rod, mainly to solve the problem that the drill rod is in contact with the support assembly and the rod feeding assembly in any posture.

[0040] Specific embodiment 1,

[0041] 1. The main components are as follows:

[0042] 1. Support assembly 1, see Figure 2 :

[0043] (1) The support block 11 has evenly distributed inclined support surfaces 111 on it, and has the functions of feeding and self-locking the rod material, wherein the long inclined surface is the sliding inclined surface of the pipe material, and the short inclined surface is the limiting surface of the pipe material; the clearance hole 112 is the clearance hole of the connecting rod in the feeding rod assembly. After the connecting rod passes through the clearance hole, the feeding rod assembly is distributed on both sides of the support assembly, wherein 21 is located at the upper end of the support assembly, and the rest are located at the lower end of the support assembly. The connecting rod 22 can move up and down during the clearance, so as to realize the up and down movement of the feeding plate;

[0044] (2) a connecting block 12, which connects the supporting blocks into a whole;

[0045] (3) A plurality of support rods 13 are welded to the support block, and are provided with pin holes 131 for rotationally cooperating with the feeding mechanism. The support rods 13 are connected to the feeding rods through connecting pins, and the feeding rods can rotate around the pins to realize parallel movement of the feeding plate;

[0046] In this embodiment, the pin hole 131 of the support rod 13 is hinged to the connecting ear seat 212 of the feed plate 21 through a pin shaft to form a swing fulcrum;

[0047] (4) Ear seat 14: It is fixedly connected to the connecting block. The feeding cylinder is installed on the ear seat. When the cylinder is extended or retracted, the feeding rod assembly realizes a swinging motion.

[0048] 2. Feed rod assembly 2, see Figure 3 , and the rod is fed in. Its main components include a feeding plate 21, a connecting rod 22, a power connecting piece 23, a cylinder 24 and a pin 25. The cylinder reciprocates, and the rod feeding mechanism realizes swinging movement, driving the drill rod on the rod feeding mechanism to continuously move forward.

[0049] (1) Feeding plate 21: a tube support with evenly distributed feeding slopes 211 and connecting lugs 212. The feeding slopes consist of a long slope and a short slope. The long slope is the sliding slope of the tube, and the short slope is the locking slope of the tube;

[0050] (2) Connecting rod 22: It has multiple pin holes, and is connected to the feed plate 21 and the power connecting member 23 through a pin shaft. One of the pin holes is connected to the pin hole of the support assembly through a pin shaft. When the power connecting member moves, the connecting rod rotates around the pin hole of the support assembly, thereby driving the feed plate to swing;

[0051] (3) The power connecting member 23 is composed of a longitudinal connecting rod 231, a transverse connecting rod 232 and an ear seat 233 to form an integral body, transmit the power from the cylinder 24, and drive the connecting rod 22 to swing.

[0052] (4) A power cylinder 24 is connected to the power connecting member and the supporting assembly to realize parallel movement of the power connecting member, one end of which is connected to the supporting assembly through a pin shaft.

[0053] In this embodiment, the piston rod of the oil cylinder 24 is hinged to the ear seat 233 of the power connecting member 23, and the cylinder end is fixed to the ear seat 14 of the support assembly 1 through a pin.

[0054] 3. Pressure rod assembly 3, such as Figure 4 , ensuring that the rod is always in contact with the support assembly or the rod delivery assembly and forming positive pressure. It is composed of a compression spring 31, a pressure rod bolt 32, a pressure rod bracket 33 and a pressure rod 34.

[0055] (1) Compression spring 31: Installed on the compression rod bolt, and install the compression rod bracket to the support assembly, wherein one end of the spring contacts the support assembly and maintains appropriate compression force to ensure that the rod is in contact with the support assembly or the compression rod assembly is in contact with the compression rod.

[0056] (2) Compression rod bolt 32: connects the compression rod assembly and the support assembly;

[0057] (3) Compression rod bracket 33: installed on the support assembly, ensuring the contact between the compression rod and the rod under the action of the spring force.

[0058] (4) Compression rod 34: It completes the compression of the rod and reduces the friction with the rod. The rod can slip or rotate in the compressed state.

[0059] In this embodiment, the compression rod bolt 32 passes through a preset through hole on the support block 11 to fix the compression rod bracket 33 on the top of the support assembly 1 .

[0060] Specific embodiment 2,

[0061] 2. Working Principle

[0062] like Figure 5 , Figure 6 , are the two positions of the rod. Figure 5 It is the support position, where the rods are stored on the two support surfaces of the support assembly. Figure 6 It is the rod sending position, and the rod is located on the two supporting surfaces of the rod sending assembly.

[0063] Rod delivery work:

[0064] (1) The oil cylinder is started, the oil cylinder retracts, and the connecting rod 22 transitions from the two side positions to the vertical position;

[0065] (2) The rod feed assembly swings, and the supporting surface of the rod feed assembly gradually rises, supporting the rod, such as Figure 6 ;

[0066] (3) The rod slides from the support surface of the feed rod assembly at position A to the locking surface, and the rod gradually moves to above the next position of the support rod;

[0067] (4) The oil cylinder extends, the connecting rod 22 swings back, and the rod slides to the B position of the supporting rod under the force of the pressure rod assembly;

[0068] (5) The rods are fed in, and the cycle is repeated to feed them in sequence.

[0069] In this embodiment, when the drill rod storage plane is tilted, the pressure rod 34 adaptively adjusts the contact angle under the action of the spring force to ensure that the drill rod is always in close contact with the support surface 111 or the feeding inclined surface 211.

[0070] In this embodiment, when the oil cylinder 24 is extended and reset, the short inclined surface of the feeding inclined surface 211 and the short limiting inclined surface of the supporting surface 111 form a complementary angle to prevent the drill rod from sliding in the reverse direction.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A drill rod stepping feeding clamp, characterized by: It includes a support assembly, a feeding rod assembly and a pressure rod assembly; the support assembly includes a support surface with evenly distributed long sliding inclined surfaces and short limiting inclined surfaces, a clearance hole for the connecting rod to pass through, and a supporting rod for fixing the feeding rod assembly; the feeding rod assembly includes a feeding plate hinged to the supporting rod through a pin shaft, a power connecting piece connected to the oil cylinder, and a multi-hole connecting rod connecting the feeding plate and the power connecting piece; The pressure rod assembly is fixed on the top of the support assembly by pressure rod bolts, and includes a compression spring and a pressure rod in contact with the drill rod; the feeding plate is provided with a feeding inclined surface corresponding to the support surface, and swing feeding is achieved by oil cylinder drive.

2. A drill rod stepping feeding clamp according to claim 1, characterized in that: The support assembly includes a connecting block welded to the support block to form a multi-station drill rod storage structure.

3. The drill rod step feeding clamp according to claim 1, characterized in that: The support rod is provided with a pin hole hinged with the sending rod assembly, and the support block is provided with an ear seat for installing the oil cylinder.

4. A drill rod step feeding clamp according to claim 3, characterized in that: The power connecting piece is composed of a longitudinal connecting rod, a transverse connecting rod and an ear seat as a whole, and one end of the oil cylinder is hinged to the ear seat of the supporting component.

5. The drill rod step feeding clamp according to claim 1, characterized in that: The compression rod support of the compression rod assembly makes the compression rod always contact the drill rod surface through the spring compression force.

6. The drill rod step feeding clamp according to claim 1, characterized in that: The connecting rod is provided with a plurality of pin holes, and an adjustable swing mechanism is formed through the pin shaft, the feeding plate and the power connecting piece.

7. A drill rod step feeding method, using a drill rod step feeding clamp as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: The cylinder retracts to drive the power connector to move horizontally, driving the connecting rod to swing around the pin hole of the support rod; the feed plate rises to allow the drill rod to slide along the feed slope to the next station of the support assembly; when the cylinder extends and resets, the pressure rod forces the drill rod to fall into the limit slope of the support surface to complete a single feed.

8. The drill rod stepping feeding clamp according to claim 7, characterized in that: During the swinging process of the feeding plate, the long inclined surface of its feeding inclined surface forms a continuous sliding path with the supporting surface.

9. The drill rod step feeding clamp according to claim 7, characterized in that: The drill rod is always in contact with the support surface or the feeding inclined surface under the action of the pressure rod spring force to prevent it from detaching.

10. The drill rod step feeding clamp according to claim 7, characterized in that: The feed inclined surface of the feed plate forms a drill rod storage position through a short inclined surface when resetting.

11. The drill rod step feeding clamp according to claim 7, characterized in that: When the oil cylinder reciprocates, the longitudinal connecting rod and the transverse connecting rod of the power connecting member cooperate to produce parallel displacement.

12. The drill rod step feeding clamp according to claim 7, characterized in that: The clearance hole of the support assembly allows the connecting rod to move up and down during the swinging process.

Images