Anchor rod drilling arm and pipe laying method thereof

Abstract

This invention discloses an anchor bolt drill arm and its pipe laying method. The anchor bolt drill arm includes a primary frame and a drill box. A fluid distribution plate is provided on the primary frame, and the drill box is slidably mounted on the primary frame. A pipe combing plate is provided on the drill box. The pipe interfaces of the combing plate and the fluid distribution plate are at the same height in the thickness direction of the primary frame. The drill box has two extreme sliding positions, and the distance between the two extreme positions of the pipe combing plate is s. The distance between the pipe interface of the fluid distribution plate and the pipe interface of the combing plate at any extreme position is s / 2. This invention optimizes the position of the fluid distribution plate to minimize the pipe length while meeting the working requirements of the drill arm. Simultaneously, the pipe combing plate on the drill box combs and aligns the pipes, and the pipe interfaces of the combing plate and the fluid distribution plate are at the same height in the thickness direction of the drill arm. This prevents pipe twisting during drill box movement, reduces the risk of pipe breakage, and improves the performance and safety of the drill arm.

Description

Technical Field

[0001] This invention relates to the field of mining machinery technology, and in particular to an anchor drill arm and its pipe laying method. Background Technology

[0002] With the development of mineral resources, anchor drill arms, as an important drilling device, play a vital role in tunnel excavation, chamber construction, and mineral resource exploration. However, anchor drill arm technology has certain problems in practical applications. For example, the pipelines from the fluid distribution plate to the drill box are freely connected, with long and haphazardly distributed pipes. This results in a discrepancy between the pipe lengths required when the drill box is located at the bottom of the drill arm and at the top, leading to excessively long pipes. Furthermore, the lack of proper pipe organization and haphazard distribution increases the risk of pipe breakage during drill box movement. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose an anchor drill arm that features high stability and high safety.

[0005] The anchor drill arm of this invention includes: a primary frame and a drill box. The primary frame is provided with a liquid distribution plate. The drill box is slidably disposed on the primary frame along the length direction of the primary frame. The drill box is provided with a pipeline sorting plate. The pipeline sorting plate and the liquid distribution plate are connected by pipelines. The pipeline interface of the pipeline sorting plate and the pipeline interface of the liquid distribution plate are at the same height in the thickness direction of the primary frame.

[0006] The drill box has two extreme positions on the primary frame. One extreme position is when the drill box slides to a position near the bottom of the primary frame, and the other extreme position is when the drill box slides to a position near the top of the primary frame. In the length direction of the primary frame, the distance between the pipe interface of the pipe combing plate and the pipe interface of the pipe combing plate at either extreme position is s, and the distance between the pipe interface of the liquid distribution plate and the pipe interface of the pipe combing plate at any extreme position is s / 2.

[0007] The anchor drill arm of this invention optimizes the position of the fluid distribution plate to ensure that the required pipe length for the drill box at its two extreme positions is consistent, minimizing the pipe length while meeting the operational requirements of the drill arm. Simultaneously, a pipe straightening plate is installed on the drill box to straighten and align the pipes, ensuring that the pipe outlets from the drill box face the same direction. Furthermore, the pipe outlets of the straightening plate and the fluid distribution plate are at the same height along the thickness direction of the drill arm. This prevents pipe twisting during drill box movement, reduces the risk of pipe breakage, and improves the performance and safety of the drill arm.

[0008] In some embodiments, the primary frame includes a primary base plate, a primary top plate, and a sliding part connecting the two. The sliding part includes a support plate, a slide rail fixing sleeve, a sliding column, and a support cylinder. The bottom end of the support plate is connected to the primary base plate, the slide rail fixing sleeve is fitted onto the top end of the support plate, the slide rail fixing sleeve has a first sliding hole, the sliding column slides through the first sliding hole, the end of the sliding column away from the primary base plate is connected to the primary top plate, the cylinder of the support cylinder is connected to the primary base plate, and the piston rod of the support cylinder is connected to the primary top plate.

[0009] In some embodiments, a secondary frame is further included, comprising a secondary base plate, a secondary top plate, a first guide post, and a second guide post. The two ends of the first guide post and the two ends of the second guide post are respectively connected to the secondary base plate and the secondary top plate. The drill box is disposed on the first guide post and is slidable between the secondary base plate and the secondary top plate. The slide rail fixing sleeve has a second sliding hole, through which the second guide post slidably passes. The secondary frame is slidable between the primary base plate and the primary top plate.

[0010] In some embodiments, a secondary cylinder is further included. The secondary cylinder includes a cylinder rod, a primary cylinder barrel, and a secondary cylinder barrel. The two ends of the primary cylinder barrel are respectively connected to the secondary bottom plate and the secondary top plate. One end of the cylinder rod is slidably disposed inside the primary cylinder barrel, and the other end of the cylinder rod is connected to the primary bottom plate. The secondary cylinder barrel is fitted onto the primary cylinder barrel and is connected to the drill box.

[0011] In some embodiments, the secondary cylinder is provided with a transmission assembly, which includes bearings at both ends of the secondary cylinder, a chain surrounding the bearings, and a chain fixing block connecting the chain to the secondary skeleton. The drill box is connected to the chain.

[0012] Embodiments of the present invention also provide a pipe laying method for an anchor drill arm, the pipe laying method being used for the anchor drill arm described in any of the above embodiments.

[0013] The pipe laying method for the anchor drill arm in this embodiment of the invention includes:

[0014] In the thickness direction of the primary skeleton, the distance d between the pipe interface of the liquid distribution plate and the pipe interface of the pipe combing plate at any of the extreme positions is determined;

[0015] The pipeline between the pipeline combing plate and the liquid distribution plate is a hydraulic pipeline, and the minimum bending radius r of the hydraulic pipeline is determined.

[0016] Given the relationship between r and d, the length l0 of the hydraulic pipeline is determined. Then, the final length l of the hydraulic pipeline is the sum of l0 and ε, where ε is a correction factor.

[0017] In some embodiments, when r < d / 2, the following relation is satisfied:

[0018]

[0019] In some embodiments, when r = d / 2, the following relation is satisfied:

[0020]

[0021] In some embodiments, when d / 2 < r ≤ d, the following relation is satisfied:

[0022]

[0023] In some embodiments, when r > d, the following relation is satisfied:

[0024] Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the anchor drill arm according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the unfolded structure of the anchor drill arm according to an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of the primary skeleton of an embodiment of the present invention.

[0028] Figure 4 This is a schematic diagram of the slide rail fixing sleeve according to an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the secondary skeleton in an embodiment of the present invention.

[0030] Figure 6 This is a cross-sectional schematic diagram of the anchor drill arm according to an embodiment of the present invention.

[0031] Figure 7 This is a cross-sectional schematic diagram of the unfolded anchor drill arm according to an embodiment of the present invention.

[0032] Figure 8 This is a schematic diagram of the first length of the hydraulic pipeline in an embodiment of the present invention.

[0033] Figure 9 This is a schematic diagram of the second length of the hydraulic pipeline in an embodiment of the present invention.

[0034] Figure 10This is a schematic diagram of the third length of the hydraulic pipeline in an embodiment of the present invention.

[0035] Figure 11 This is a schematic diagram of the fourth length of the hydraulic pipeline in an embodiment of the present invention.

[0036] Figure label:

[0037] 1-Primary skeleton, 11-Liquid distribution plate, 12-Primary base plate, 13-Primary top plate, 14-Support plate, 15-Slide rail fixing sleeve, 151-First sliding hole, 152-Second sliding hole, 16-Sliding column, 17-Support cylinder

[0038] 2-Drill box, 21-Pipeline combing plate, 201-First extreme position, 202-Second extreme position

[0039] 3-Hydraulic pipelines,

[0040] 4-Secondary frame, 41-Secondary base plate, 42-Secondary top plate, 43-First guide column, 44-Secondary guide column

[0041] 5-Secondary cylinder, 51-Cylinder rod, 52-Primary cylinder barrel, 53-Secondary cylinder barrel, 531-Bearing, 532-Chain, 533-Chain fixing block. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0043] The anchor drill arm of an embodiment of the present invention is described below with reference to the accompanying drawings.

[0044] like Figures 1 to 7 As shown, the anchor drill arm in this embodiment of the invention includes: a primary frame 1 and a drill box 2.

[0045] A liquid distribution plate 11 is provided on the primary frame 1. The drill box 2 is slidably provided on the primary frame 1 along the length direction of the primary frame 1. A pipeline combing plate 21 is provided on the drill box 2. The pipeline combing plate 21 and the liquid distribution plate 11 are connected by pipelines. The pipeline between the pipeline combing plate 21 and the liquid distribution plate 11 is a hydraulic pipeline 3. The pipeline interfaces of the pipeline combing plate 21 and the liquid distribution plate 11 are at the same height in the thickness direction of the primary frame 1.

[0046] In this embodiment of the invention, the anchor drill arm has a pipeline sorting plate 21 installed on the drill box 2 to sort and align the hydraulic pipelines 3, so that the pipeline interfaces leading out of the drill box 2 face the same direction. Furthermore, the pipeline sorting plate 21 and the pipeline interfaces of the fluid distribution plate 11 are at the same height in the thickness direction of the drill arm. This prevents the hydraulic pipelines 3 from twisting during the movement of the drill box 2, reduces the risk of the hydraulic pipelines 3 being snagged, and improves the performance and safety of the drill arm.

[0047] The drill box 2 has two extreme positions on the primary frame 1. The two extreme positions are the first extreme position 201 and the second extreme position 202. The first extreme position 201 is the position where the drill box 2 slides to the bottom of the primary frame 1, and the second extreme position 202 is the position where the drill box 2 slides to the top of the primary frame 1.

[0048] Furthermore, along the length of the primary skeleton 1, the distance between the pipe interfaces of the pipe combing plate 21 at the two extreme positions is s, and the distance between the liquid distribution plate 11 and the pipe interface of the pipe combing plate 21 at any extreme position is s / 2.

[0049] The anchor drill arm of this invention optimizes the position of the fluid distribution plate 11 so that the drill box 2 has the same pipe length required for the two extreme positions. Under the condition of meeting the working requirements of the drill arm, the length of the hydraulic line 3 is moderate, avoiding the problem of the hydraulic line 3 being too long.

[0050] In some embodiments, such as Figures 1 to 4 As shown, the primary frame 1 includes a primary base plate 12, a primary top plate 13, and a sliding part connecting the two. The sliding part includes a support plate 14, a slide rail fixing sleeve 15, a sliding column 16, and a support cylinder 17.

[0051] The bottom end of the support plate 14 is connected to the first-stage base plate 12. The slide rail fixing sleeve 15 is located at the top of the support plate 14. The slide rail fixing sleeve 15 has a first sliding hole 151. The sliding column 16 slides through the first sliding hole 151. The end of the sliding column 16 away from the first-stage base plate 12 is connected to the first-stage top plate 13. The cylinder of the support cylinder 17 is connected to the first-stage base plate 12. The piston rod of the support cylinder 17 is connected to the first-stage top plate 13.

[0052] Understandably, during drilling operations, the primary roof 13 is used to contact the coal face, providing stable support for the drill arm and ensuring the safety and efficiency of the drilling operation. When it is necessary to adjust the height of the drill arm, the sliding column 16 can be moved up and down within the slide rail fixing sleeve 15 by controlling the extension and retraction of the support cylinder 17, thereby changing the position of the primary roof 13.

[0053] In some embodiments, such as Figures 1 to 5As shown, the anchor drill arm also includes a secondary frame 4, which includes a secondary base plate 41, a secondary top plate 42, a first guide post 43, and a second guide post 44. The two ends of the first guide post 43 are connected to the secondary base plate 41 and the secondary top plate 42, respectively, and the two ends of the second guide post 44 are connected to the secondary base plate 41 and the secondary top plate 42, respectively.

[0054] The drill box 2 is slidably mounted on the first guide post 43 via a drill box 2 fixing sleeve, and the drill box 2 slides axially between the secondary bottom plate 41 and the secondary top plate 42. The slide rail fixing sleeve 15 has a second sliding hole 152, through which the second guide post 44 slides slidably. The secondary frame 4 slides axially between the primary bottom plate 12 and the primary top plate 13.

[0055] Understandably, the primary frame 1, secondary frame 4, and drill box 2 all undergo axial movement to ensure the straightness and stability of the drilling operation, avoid unexpected movement, and thus improve the accuracy of drilling and the installation quality of the anchor bolts.

[0056] In some embodiments, such as Figure 6 and Figure 7 As shown, the anchor drill arm also includes a secondary hydraulic cylinder 5, which includes a cylinder rod 51, a primary cylinder barrel 52, and a secondary cylinder barrel 53.

[0057] The two ends of the first-stage cylinder 52 are connected to the second-stage bottom plate 41 and the second-stage top plate 42 respectively. One end of the cylinder rod 51 is slidably disposed inside the first-stage cylinder 52, and the other end of the cylinder rod 51 is connected to the first-stage bottom plate 12. The second-stage cylinder 53 is fitted onto the first-stage cylinder 52 and is connected to the drill box 2.

[0058] Understandably, the cylinder rod 51 extends to allow the primary cylinder 52 to drive the secondary frame 4 to slide, and the secondary cylinder 53 slides on the primary cylinder 52, thereby driving the drill box 2 to slide. Specifically, the primary base plate 12 has oil inlet and return channels connected to the secondary cylinder 5, which control the forward and backward movement of the secondary cylinder 5 respectively.

[0059] Optionally, such as Figure 6 and Figure 7 As shown, the secondary cylinder 53 is equipped with a transmission assembly, which includes bearings 531 at both ends of the secondary cylinder 53, a chain 532 wrapped around the bearings 531, and a chain fixing block 533 that connects the chain 532 to the secondary frame 4. The drill box 2 is connected to the chain 532.

[0060] Understandably, during the sliding process of the secondary cylinder 53, the chain 532 is connected to the secondary frame 4 through the chain fixing block 533, thereby driving the chain 532 to rotate around the bearing 531, which in turn drives the drill box 2 to slide on the secondary frame 4.

[0061] Since the drilling height may vary from the ground to a higher rock surface during underground engineering, tunnel excavation, or slope stabilization construction, the drill box 2 can be moved from the bottom to the top of the drill arm, thus ensuring effective drilling operations at different heights.

[0062] The following describes a pipe-laying method for an anchor drill arm according to an embodiment of the present invention, with reference to the accompanying drawings. This pipe-laying method is used for the anchor drill arm in any of the above embodiments.

[0063] The pipe laying method for the anchor drill arm in this embodiment of the invention includes:

[0064] In the thickness direction of the primary skeleton 1, the distance d between the pipe interface of the liquid distribution plate 11 and the pipe interface of the pipe combing plate 21 at any extreme position is determined.

[0065] The pipeline between the pipeline combing plate 21 and the liquid distribution plate 11 is a hydraulic pipeline 3. The minimum bending radius r of the hydraulic pipeline 3 is determined.

[0066] Given the relationship between r and d, the length l0 of hydraulic line 3 is given. Then the final length l of hydraulic line 3 is the sum of l0 and ε, where ε is the correction amount.

[0067] Optionally, such as Figure 8 As shown, when r < d / 2, the following relation is satisfied:

[0068]

[0069] Optionally, such as Figure 9 As shown, when r = d / 2, the following relation is satisfied:

[0070]

[0071] Optionally, such as Figure 10 As shown, when d / 2 < r ≤ d, the following relation is satisfied:

[0072]

[0073] Optionally, such as Figure 11 As shown, when r > d, the following relation is satisfied:

[0074]

[0075] Therefore, based on the minimum bending radius of the hydraulic pipeline 3 and the relative positions of the fluid distribution plate 11 and the pipeline sorting plate 21, a design method for the shortest length of the hydraulic pipeline 3 is proposed. While ensuring the reliability of the hydraulic pipeline 3, the redundant length of the pipeline is reduced, effectively solving the problem of pipe tangling, effectively reducing the pressure loss and energy consumption of the hydraulic system, improving the working efficiency of the hydraulic system, and extending the service life of the pipeline.

[0076] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0078] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0079] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0080] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0081] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A method for laying pipes in an anchor bolt drill arm, characterized in that, The anchor drill arm includes: a primary frame and a drill box. The primary frame is provided with a liquid distribution plate. The drill box is slidably disposed on the primary frame along the length direction of the primary frame. The drill box is provided with a pipeline sorting plate. The pipeline sorting plate and the liquid distribution plate are connected by pipelines. The pipeline interface of the pipeline sorting plate and the pipeline interface of the liquid distribution plate are at the same height in the thickness direction of the primary frame. The drill box has two extreme positions on the primary frame. One extreme position is when the drill box slides to a position near the bottom of the primary frame, and the other extreme position is when the drill box slides to a position near the top of the primary frame. In the length direction of the primary frame, the distance between the pipe interface of the pipe combing plate and the pipe interface of the pipe combing plate at either extreme position is s, and the distance between the pipe interface of the liquid distribution plate and the pipe interface of the pipe combing plate at any extreme position is s / 2. The pipe laying method for the anchor drill arm includes: determining the distance d between the pipe interface of the liquid distribution plate and the pipe interface of the pipe combing plate at any of the extreme positions in the thickness direction of the primary skeleton; The pipeline between the pipeline combing plate and the liquid distribution plate is a hydraulic pipeline, and the minimum bending radius r of the hydraulic pipeline is determined. The length of the hydraulic pipeline is given based on the relationship between r and d. Then the final length of the hydraulic pipeline for The sum of ε and ε, where ε is the correction factor; When r < d / 2, the following relation is satisfied: ； When r = d / 2, the following relation is satisfied: ； When d / 2 < r ≤ d, the following relation is satisfied: ； When r > d, the following relation is satisfied: 。 2. The method for laying pipes in an anchor drill arm according to claim 1, characterized in that, The primary frame includes a primary base plate, a primary top plate, and a sliding part connecting the two. The sliding part includes a support plate, a slide rail fixing sleeve, a sliding column, and a support cylinder. The bottom end of the support plate is connected to the primary base plate, the slide rail fixing sleeve is fitted onto the top end of the support plate, the slide rail fixing sleeve has a first sliding hole, the sliding column slides through the first sliding hole, the end of the sliding column away from the primary base plate is connected to the primary top plate, the cylinder of the support cylinder is connected to the primary base plate, and the piston rod of the support cylinder is connected to the primary top plate.

3. The pipe laying method for the anchor drill arm according to claim 2, characterized in that, It also includes a secondary frame, which includes a secondary base plate, a secondary top plate, a first guide post, and a second guide post. The two ends of the first guide post and the two ends of the second guide post are respectively connected to the secondary base plate and the secondary top plate. The drill box is mounted on the first guide post and is slidable between the secondary base plate and the secondary top plate. The slide rail fixing sleeve has a second sliding hole, through which the second guide post slides. The secondary frame is slidable between the primary base plate and the primary top plate.

4. The pipe laying method for the anchor drill arm according to claim 3, characterized in that, It also includes a secondary hydraulic cylinder, which includes a cylinder rod, a primary cylinder barrel, and a secondary cylinder barrel. The two ends of the primary cylinder barrel are respectively connected to the secondary bottom plate and the secondary top plate. One end of the cylinder rod is slidably disposed inside the primary cylinder barrel, and the other end of the cylinder rod is connected to the primary bottom plate. The secondary cylinder barrel is fitted onto the primary cylinder barrel and is connected to the drill box.

5. The method for laying pipes in an anchor drill arm according to claim 4, characterized in that, The secondary cylinder is equipped with a transmission assembly, which includes bearings at both ends of the secondary cylinder, a chain wrapped around the bearings, and a chain fixing block that connects the chain to the secondary frame. The drill box is connected to the chain.

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