The operating arm of the drilling and grouting integrated bolt jumbo

Abstract

The present application discloses an operating arm of an integrated drilling and grouting bolt trolley, which includes a propulsion beam, a first slide plate, a drilling assembly and a grouting assembly. The propulsion beam extends along a first direction; the first slide plate is slidably mounted on the propulsion beam and can reciprocate along the first direction; the drilling assembly is slidably mounted on the first slide plate and can reciprocate along a second direction, having a first working position for preparing to drill the rock wall and a first standby position for avoiding the grouting pipe; the grouting assembly is mounted on the first slide plate and works alternately with the drilling assembly, including a grouting pipe and a lifting frame for moving the grouting pipe. The grouting pipe has a second working position for preparing to grout into the drill hole and a second standby position for avoiding the drilling assembly. The grouting assembly relies on the lifting frame to switch positions with the drilling assembly, so that the grouting assembly is always on the propulsion beam, reducing the vibration caused by high-frequency drilling.

Description

Technical Field

[0001] This application relates to the technical field of tunnel construction, and specifically to an operating arm of an integrated drilling and grouting bolt trolley. Background Art

[0002] The bolt trolley is an integrated movable vehicle equipment for bolt grouting support. At present, in order to improve the modern operation level and operation efficiency, the bolt trolley generally has an operating arm (manipulator arm) and a manual maintenance platform. The operating arm is integrated with a drilling component for drilling and a grouting component for grouting, replacing the previous manual operation.

[0003] For example, the Chinese patent document with the publication number CN 109505638 A discloses a multi-station mechanized switching mechanism for bolt support construction and a bolt construction device. The bolt head component and the grouting component are arranged side by side and slide on a vertical propulsion beam on the same fixed frame and movable frame. According to the actual working condition requirements, it slides and switches to the corresponding equipment for drilling or grouting work. Although it achieves the integration of the drill rod and grouting, completely replaces manual operation, and improves work efficiency, due to the side-by-side arrangement, the width of the fixed frame and the movable frame is relatively wide. When the drilling component is in the working position, the entire grouting component is placed outside the propulsion beam. Under the high-frequency drilling vibration, the grouting component does not have good fixed support, and the vibration will be amplified, resulting in a reduction in the service life of the components of the grouting component and prone to failures. When the drilling component moves sideways to give way to the grouting component for grouting operation, the entire drilling component is outside the propulsion beam, and the drilling component is heavy. After the overall movement to the side, the center of gravity offset of the operating arm increases, affecting the hole alignment accuracy of the subsequent grouting component. Summary of the Invention

[0004] This application provides an operating arm of an integrated drilling and grouting bolt trolley, which extends the service life of the grouting component and improves the hole alignment accuracy when grouting or conveying bolts.

[0005] An operating arm of a bolt trolley includes:

[0006] A propulsion beam that extends along a first direction;

[0007] A first slide plate that is slidably installed on the propulsion beam and can reciprocally slide along the first direction;

[0008] A drilling component that is slidably installed on the first slide plate and can reciprocally slide along a second direction, and has a first working position for preparing to drill the rock wall and a first standby position for avoiding the grouting pipe;

[0009] The grouting assembly is installed on the first slide plate and includes a grouting pipe and a lifting frame for moving the grouting pipe. The grouting pipe has a second working position for grouting into the drill hole and a second standby position for avoiding the drill hole assembly.

[0010] The grouting pipe and the drill hole assembly are alternately in their respective working positions. When the drill hole assembly enters the first working position, the lifting frame drives the grouting pipe into the second standby position. When the drill hole assembly is in the first standby position, the lifting frame can drive the grouting pipe to approach the propulsion beam and enter the second working position.

[0011] The following also provides several optional methods, which are not additional limitations to the above overall solution, but only further supplements or optimizations. Without technical or logical contradictions, each optional method can be combined with the above overall solution alone, or multiple optional methods can be combined with each other.

[0012] Optionally, the lifting frame includes a first support rod and a second support rod hinged to the front part of the first slide plate. The grouting pipe is also hinged to the first support rod and the second support rod. The front part of the first slide plate, the first support rod, the second support rod, and the grouting pipe form a foldable four-bar linkage mechanism.

[0013] Optionally, during the process of moving the grouting pipe by the lifting frame, the first support rod and the second support rod rotate in the same direction and always keep the grouting pipe extending along the first direction.

[0014] Optionally, the grouting assembly includes a fixed seat rotatably matched with the grouting pipe and a power device installed on the fixed seat to drive the grouting pipe to rotate. The grouting pipe has a feed port and a discharge port, and a nut sleeve for rotating the anchor nut to lock the anchor is arranged at the discharge port.

[0015] Optionally, an anti-collision nozzle axially protruding from the end of the grouting pipe and capable of sliding relatively is arranged at the discharge port of the grouting pipe, and a buffer spring acting on the anti-collision nozzle is sleeved outside the grouting pipe.

[0016] Optionally, the anti-collision nozzle includes a conical barrel part and a straight barrel part sleeved with the grouting pipe, and the nut sleeve has a limiting protrusion radially protruding from the outer wall of the grouting pipe to limit the anti-collision nozzle from detaching.

[0017] Optionally, the first slide plate is divided into a front part and a rear part along the first direction, and there is a combined state of synchronous sliding and a separated state of independent sliding between the front part and the rear part.

[0018] The drilling assembly is installed on the rear part of the first slide plate, and the grouting assembly is installed on the front part of the first slide plate. When the drilling assembly is in the first working position, the front and rear parts of the first slide plate are in a combined state. When the grouting pipe is in the second working position, the front and rear parts of the first slide plate are in a separated state.

[0019] Optionally, the front part of the first slide plate is driven by a driving mechanism to slide along a first direction. The driving mechanism includes a first chain arranged along the first direction, and the front part of the first slide plate is fixedly connected to a part of the first chain.

[0020] Optionally, one of the front and rear parts of the first slide plate is provided with a coupling rod extending along a second direction, and the other is provided with a coupling hole cooperating with the coupling rod.

[0021] Optionally, the first direction and the second direction are perpendicular to each other.

[0022] For the operating arm of the rock bolt jumbo in this application, the drilling assembly and the grouting assembly are arranged front and rear along the first direction. The grouting assembly has a separate lifting structure, so that the grouting assembly is always on the propulsion beam, obtaining strong fixed support, reducing the vibration during high-frequency drilling, and prolonging the service life. Description of the Drawings

[0023] Figure 1 Is a perspective view of the operating arm of the rock bolt jumbo according to an embodiment of this application;

[0024] Figure 2 Is a schematic structural view of the rock bolt used in the operating arm of the rock bolt jumbo of this application;

[0025] Figure 3 Is a partial exploded view at the drilling assembly in the operating arm of the rock bolt jumbo of this application;

[0026] Figure 4 Is a perspective view of the first slide plate when the front and rear parts are combined and the drilling assembly is in the first working position in the operating arm of the rock bolt jumbo of this application;

[0027] Figure 5 Is a perspective view of the first slide plate when the front and rear parts are separated and the drilling assembly is in the first standby position in the operating arm of the rock bolt jumbo of this application;

[0028] Figure 6 Is a schematic view of the grouting assembly in the second working position in the operating arm of the rock bolt jumbo of this application;

[0029] Figure 7 Is a schematic view of the grouting assembly in the second standby position in the operating arm of the rock bolt jumbo of this application;

[0030] Figure 8This is a schematic diagram of the first chain structure in the operating arm of the anchor trolley of the present application;

[0031] Figure 9 for Figure 8 Another state diagram of ;

[0032] Figure 10 for Figure 8 Enlarged view of part A in the middle;

[0033] Figure 11 This is a three-dimensional diagram of the structure of the grouting pipe part in the operating arm of the anchor trolley of this application;

[0034] Figure 12 for Figure 11 A cross-sectional view of

[0035] Figure 13 for Figure 12 Another state diagram of ;

[0036] Figure 14 for Figure 12 Enlarged view of middle part B;

[0037] Figure 15 A three-dimensional diagram of the clamping state of the rod support in the operating arm of the anchor trolley of this application;

[0038] Figure 16 for Figure 15 Another state diagram;

[0039] Figure 17 It is a three-dimensional diagram of the structure of the synchronous displacement part of the rod support in the operating arm of the anchor trolley in one embodiment;

[0040] Figure 18 A three-dimensional diagram of the structure of the synchronous displacement part of the rod support in the operating arm of the anchor trolley in another embodiment;

[0041] Figure 19 This is a structural cross-sectional view of the first rack in the operating arm of the anchor trolley of the present application;

[0042] Figure 20 for Figure 19 Another state diagram of ;

[0043] Figure 21 This is a structural cross-sectional view of the second rack in the operating arm of the anchor trolley of the present application;

[0044] Figure 22 for Figure 21 Another state diagram of ;

[0045] Figure 23 for Figure 17 An enlarged view of the clutch device in the middle C section in the disengaged state;

[0046] Figure 24 is Figure 23 a schematic diagram of the locked state of the locking device in

[0047] Figure 25 is Figure 23 a schematic diagram of the engaged state of the clutch device in

[0048] Figure 26 is Figure 25 a schematic diagram of the unlocked state of the locking device in

[0049] Figure 27 is Figure 25 a schematic diagram from another perspective;

[0050] Figure 28 is Figure 23 a schematic diagram from another perspective;

[0051] Figure 29 is Figure 18 an enlarged view of part D in

[0052] Figure 30 is Figure 29 a schematic diagram of another state of

[0053] Figure 31 is Figure 29 a cross-sectional view at the clutch device of

[0054] Figure 32 is Figure 30 a cross-sectional view at the clutch device of

[0055] Figure 33 is Figure 29 a schematic diagram of the lateral displacement of the first engaging member and the second engaging member in

[0056] The reference numerals in the figure are explained as follows:

[0057] 1. Pushing beam; 11. First chain; 12. Driving sprocket; 13. Driven sprocket; 14. Fiber supporting mechanism;

[0058] 21. First sliding plate; 211. Front part;

[0059] 212. Rear part; 2121. Rear base; 2122. Rear sliding plate; 2123. Guide rail; 2124. Oil cylinder;

[0060] 22. Drilling assembly;

[0061] 23. Locking mechanism; 231. Connecting rod; 232. Connecting hole;

[0062] 3. Grouting assembly;

[0063] 31. Grouting pipe; 311. Fixed seat; 312. Feed inlet; 313. Discharge outlet;

[0064] 314. Nut sleeve; 3141. Limit projection; 3142. Through hole; 3143. Tapered portion;

[0065] 315. Anti-collision nozzle; 3151. Conical barrel portion; 3152. Straight barrel portion; 3153. Avoidance groove;

[0066] 316. Buffer spring;

[0067] 32. Lifting frame; 321. First support rod; 322. Second support rod; 323. Driving device; 324. Bevel gear set;

[0068] 33. Power device; 331. Motor; 332. Bush; 333. Bearing;

[0069] 4. Rod bracket;

[0070] 5. Linkage assembly;

[0071] 51. Clutch device; 511. First engaging member; 5111. Card slot;

[0072] 512. Second engaging member; 5121. Block; 5122. Annular boss;

[0073] 521. First rack; 522. Second rack; 523. First gear ring; 524. Second gear ring; 525. Transmission rod;

[0074] 526. Slide rail seat;

[0075] 53. Locking device; 531. Bolt; 532. Elastic reset member; 533. Bolt hole; 534. Trigger member;

[0076] 535. Rotating pin; 536. First connecting plate; 537. Second connecting plate; 538. Insert block; 539. Insert slot;

[0077] 540. Side shift device;

[0078] 551. Movable pin, 552. Elastic member;

[0079] 6. Drill pipe; 7. Anchor rod; 71. Nut; 72. Base plate; 73. Rod body;

[0080] 8. Anchor rod storage. Detailed implementation method

[0081] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0082] It should be noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or there may also be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time.

[0083] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0084] In this application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity or order of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0085] As Figure 2 shown, the anchor bolt 7 generally includes a hollow rod body 73, a nut 71 and a backing plate 72 sleeved on the rod body 73, and an anchor head (not shown in the figure) is also provided at the distal end of the rod body 73. The installation process requires drilling a hole in the rock wall in advance, then sending the anchor bolt into the anchor bolt installation hole, and after installation, rotating the nut 71 to lock the anchor bolt 7. In order to achieve anchoring, it is also necessary to grout into the hole through the anchor bolt, and the grout can use existing materials, which will not be elaborated here.

[0086] In order to achieve the automatic installation of the anchor bolt, as Figures 1 - 8As shown in the figure, the present application provides an operating arm for a bolt trolley, which includes a propulsion beam 1, a drilling assembly 22, and a grouting assembly 3. Among them, the drilling assembly 22 includes a drill rod 6 for drilling bolt installation holes in the rock wall, and it can use existing rock drills. The grouting assembly 3 generally includes a grouting pipe 31 that can grout into the bolt installation holes. In order to achieve a higher degree of automation, the grouting pipe 31 also has the function of docking with the bolt 7, sending the bolt 7 into the bolt installation hole and rotating the nut 71. The operating arm generally also includes a bolt library 8 for storing and sending the bolt 7 to the grouting assembly 3, realizing unmanned installation of the bolt 7.

[0087] Among them, the propulsion beam 1 is a straight-section profile, and its own length direction is the first direction. The propulsion beam 1 extends along the first direction and has a front end and a rear end. The front end abuts against the rock wall to realize the relative fixation between the operating arm and the rock wall, facilitating the drilling of the drilling assembly 22 or the grouting of the grouting assembly 3.

[0088] The first sliding plate 21 is used to support and fix the drilling assembly 22 and the grouting assembly 3, and is slidably installed on the propulsion beam 1. Generally, a mutually cooperating slide rail and slideway are provided between the two. The first sliding plate 21 can thus slide along the first direction.

[0089] The drilling assembly 22 is slidably installed on the first sliding plate 21, and the sliding direction is the second direction that is not the same as the first direction, and has:

[0090] The first working position, at this time, the drilling assembly 22 is at the rear end of the propulsion beam 1, and the axis of its drill rod is at the center line position of the propulsion beam 1. In this position, the drilling assembly 22 can slide along the first direction to drill the rock wall.

[0091] The first standby position, after the drilling of the drilling assembly 22 is completed, it has retreated along the first direction to the rear end of the propulsion beam 1, and slides along the second direction, driving the drill rod 6 to move synchronously to avoid the space for the grouting pipe 31 to work, facilitating subsequent grouting operations.

[0092] As Figures 7 - 9 shown, the grouting assembly 3 includes a lifting frame 32 for moving the grouting pipe 31 to switch between the second working position and the second standby position. The grouting pipe 31 relies on the lifting frame 32 to move away from / close to the propulsion beam 1. In the second working position, the grouting pipe 31 descends close to the propulsion beam 1 until its axis is aligned with the bolt installation hole. In the second standby position, the grouting pipe 31 rises away from the propulsion beam 1 to provide space for the drilling assembly 22 to slide forward, realizing the alternating work of the drilling assembly 22 and the grouting assembly 3.

[0093] The second working position, the drilling assembly 22 slides to the first standby position, and the grouting pipe 31 moves close to the first sliding plate 21 until its axis is aligned with the bolt installation hole. The grouting pipe 31 can dock with the bolt 7 for grouting, or can slide along the first direction to align with the bolt installation hole for grouting.

[0094] In the second standby position, the grouting pipe 31 moves away from the first slide plate 21 until a space is left for the drilling assembly 22 to complete the drilling operation when in the first working position. This enables the grouting pipe 31 and the drilling assembly 22 to work alternately.

[0095] The position switching of the above-mentioned drilling assembly 22 and the grouting assembly 3 is the operation process of the operating arm. The specific operation process is as follows: The drilling assembly 22 is in the first working position. After the operating arm abuts against the rock wall and is relatively fixed, the drilling assembly 22 slides forward along the first direction to perform the drilling operation. After the drilling operation is completed, the drilling assembly 22 slides backward along the first direction to the rear end of the propulsion beam 1. At the same time, an anchor bolt installation hole is formed on the rock wall. Subsequently, the drilling assembly 22 slides along the second direction to the first standby position, the grouting pipe 31 of the grouting assembly 3 moves to the second working position, docks with the anchor bolt 7, slides forward along the first direction, and sends the anchor bolt 7 into the anchor bolt installation hole. Then, the slurry is transported. After the grouting operation is completed, the grouting assembly 3 retreats to the initial position along the first direction, moves the grouting pipe 31 to the second standby position, and the drilling assembly 22 slides to the first working position. The operating arm moves to the next rock wall for a new round of operation. When in the first working position, compared with the structure where the traditional grouting assembly 3 is arranged in parallel and outside the propulsion beam 1, in this application, both the grouting assembly 3 and the drilling assembly 22 are on the propulsion beam 1, reducing the influence of the grouting assembly 3 itself and the grouting assembly 3 on the jitter of the operating arm during high-frequency drilling operations, and improving the product stability. When in the second working position, compared with the structure where the whole traditional drilling assembly 22 is outside the propulsion beam 1, only part of the drilling assembly 22 is outside the propulsion beam 1, reducing the load force on the rear end of the propulsion beam 1 and extending the service life of the propulsion beam 1.

[0096] In one embodiment, the lifting frame 32 includes a first support rod 321 and a second support rod 322 hinged to the front part 211 of the first sliding plate 21. The grouting pipe 31 is also hinged to the first support rod 321 and the second support rod 322. The front part 211 of the first sliding plate 21, the first support rod 321, the second support rod 322 and the grouting pipe 31 form a foldable four-bar linkage mechanism. A driving device 323 (such as an oil cylinder or a cylinder) pivotally connected to one of the support rods is provided on the front part 211. The driving device 323 drives the support rod, and the folding / unfolding operation is completed by relying on the four-bar linkage mechanism. When the four-bar linkage mechanism folds, the grouting pipe 31 descends to approach the propulsion beam 1, and when it unfolds, the grouting pipe 31 is lifted away from the propulsion beam 1. The plane where the movement path of the grouting pipe 31 is located is always the same plane as the vertical plane of the propulsion beam 1 along the first direction. Compared with the mechanism in which the traditional grouting assembly 3 and the drilling assembly 22 are arranged in parallel and switched by sliding, the drilling assembly 22 may be in a situation where the whole machine is outside the propulsion beam 1. In this embodiment, the drilling assembly 22 only needs to slide along the second direction to leave a space for the grouting pipe 31 to work, so that the sliding stroke along the second direction is reduced, the offset of the center of gravity of the operating arm caused by the movement of the drilling assembly 22 is reduced, the coaxial accuracy of the anchor rod 7 or the grouting pipe 31 and the anchor rod installation hole is improved, and the subsequent operation of conveying the anchor rod 7 or directly grouting is facilitated.

[0097] In one embodiment, during the process of moving the grouting pipe 31 by the lifting frame 32, the first support rod 321 and the second support rod 322 rotate in the same direction, and the grouting pipe 31 is always kept extending along the first direction. The four-bar linkage mechanism is a parallelogram structure, so that the grouting pipe 31 is always kept horizontal with the propulsion beam 1. When the grouting pipe 31 descends to the second working position at the front end of the propulsion beam 1, interference with the drilling assembly 22 at the rear end is avoided, and it is kept coaxial with the anchor rod installation hole, which is convenient for horizontally installing the anchor rod 7.

[0098] When the grouting assembly 3 conveys the whole anchor rod 7 to the anchor rod installation hole and then performs the grouting operation, in order to better fix the anchor rod 7 to the hole wall, such as Figures 12 - 14As shown, in one embodiment, the grouting assembly 3 includes a fixed seat 311 rotatably engaged with the grouting pipe 31, and a power device 33 installed on the fixed seat 311 to drive the grouting pipe 31 to rotate. The grouting pipe 31 has a feed port 312 and a discharge port 313. The feed port 312 is connected and fixed with a rubber hose (not shown in the figure) for conveying slurry. The discharge port 313 is provided with a nut sleeve 314 for rotating the nut 71 to lock the anchor rod 7. The nut sleeve 314 has a through hole 3142 that at least partially conforms to the outer contour of the nut 71 and communicates with the grouting pipe 31 for the rod body 73 to pass through. The through hole 3142 includes a front section that cooperates with the nut 71 for locking and a rear section that is a round hole. The front section and the rear section form a step that abuts against the nut 71. The shape of the front section adapts to the outer shape structure of most nuts, such as a regular hexagon. When the anchor rod 7 is inserted into the grouting pipe 31, the relative circumferential fixation with the grouting pipe 31 is realized by relying on the nut 71 and the nut sleeve 314, and they can rotate synchronously. After the entire anchor rod 7 is conveyed into the anchor rod installation hole, the power device 33 is started, and the grouting pipe 31 rotates around its own axis, driving the nut 71 to rotate, so that the front end of the anchor rod 7 is expanded and fixed with the hole wall. The hollow design of the grouting pipe 31 facilitates the rod body 73 exceeding the nut 71 to extend into the grouting pipe 31 through the through hole 3142, and is applicable to anchor rods 7 of different lengths.

[0099] In one embodiment, at the discharge port 313 of the grouting pipe 31, there is an axially protruding and slidable anti-collision nozzle 315 at its end. A buffer spring 316 acting on the anti-collision nozzle 315 is sleeved outside the grouting pipe 31. When the anti-collision nozzle 315 abuts against the rock wall, it indicates that the conveyance of the anchor rod is approaching the limit value, and the operation of rotating the nut 71 can be carried out to protect the nut sleeve 314. In a preferred embodiment, the anti-collision nozzle 315 includes a conical tube portion 3151 and a straight tube portion 3152 sleeved with the grouting pipe. The conical tube portion 3151 is formed as a flared structure that radially extends gradually outward from the end of the straight tube portion 3152 close to the rock wall, which is convenient for the assembly of the nut sleeve 314 and plays a guiding role when the anchor rod 7 is inserted into the nut sleeve 314. The nut sleeve 314 has a limiting protrusion 3141 that radially protrudes from the outer wall of the grouting pipe 31 to limit the anti-collision nozzle 315 from detaching. Correspondingly, the straight tube portion 3152 is provided with an avoidance groove 3153 for avoiding the limiting protrusion 3141, and the limiting protrusion 3141 abuts against the end face of the grouting pipe 31 after the nut sleeve 314 is tightened, indicating that the nut sleeve 314 is assembled in place and facilitating the operation.

[0100] In one embodiment, the nut sleeve 314 can be threadedly connected and fixed at the discharge port 313, which is convenient for disassembly and replacement of different nut sleeves 314 to adapt to different specifications of nuts 71 and is convenient for assembly.

[0101] In one embodiment, the through hole 3142 is provided with a conical portion 3143 with a guiding function. The conical portion 3143 is arranged at the front end and radially extends outward and flares to guide and receive the anchor rod 7, facilitating the locking cooperation between the nut 71 and the nut sleeve 314.

[0102] Please refer to again Figure 13 Figure 13 , in one embodiment, the power device 33 includes a motor 331 and a bushing 332 sleeved outside the grouting pipe 31. A bevel gear set 324 is arranged between the bushing 332 and the output shaft of the motor 331, and a bearing 333 is arranged between the bushing 332 and the fixed seat 311. Among them, the bushing 332 and the grouting pipe 31 are connected by a key, so that the two rotate synchronously. The bevel gear set 324 can realize the switching between the rotation direction of the output shaft of the motor arranged at different positions and the rotation direction of the grouting pipe 31. Therefore, the arrangement method of the motor 331 is not limited. In this embodiment, the motor 331 is arranged vertically upward with respect to the grouting pipe 31, and the structure is more compact. There are two sets of bearings 333, which are respectively located at the front and rear ends of the bushing 332, making the rotation of the bushing 332 smoother.

[0103] As Figure 5 and Figure 6 shown, in one embodiment, the first slide plate 21 is divided into a front part 211 and a rear part 212 along the first direction. A locking mechanism 23 is generally arranged between the two parts. The drilling assembly 22 is slidably fixed on the rear part 212, and the grouting assembly 3 is fixedly connected to the front part 211 and has:

[0104] Combined state, the locking mechanism 23 is locked, the two parts are relatively fixed and slide synchronously;

[0105] Separation state, the locking mechanism 23 is unlocked, the two parts are separated, and at least one of them can slide. There is also a first driving mechanism for driving the sliding of the drilling assembly 22 between them. Specifically, the rear part 212 includes a rear base 2121 and a rear slide plate 2122 slidably arranged on the rear base 2121. A sliding guide rail 2123 is also arranged between the two, and an oil cylinder 2124 for driving the reciprocating sliding of the rear slide plate 2122.

[0106] The operating arm of the bolt trolley in this embodiment improves the drilling assembly 22 and the grouting assembly 3 to be arranged front and back. The plate for the drilling assembly 22 to slide is a whole plate, and only the drilling assembly 22 slides alone. Compared with the traditional structure where the drilling assembly 22 and the grouting assembly 3 are arranged vertically and parallel to the first direction and must rely on the sliding and switching between plates, the gap between multiple plates is eliminated, the sliding is smoother, the jamming failure rate is reduced, and the product stability is improved.

[0107] In order to effectively realize the alternating work of the two, in one embodiment, the first direction and the second direction are perpendicular to each other, so that the sliding stroke of the drilling assembly 22 is minimized, the sliding failure rate is reduced, and the size of the corresponding components is reduced, thereby reducing the production cost.

[0108] The locking mechanism 23 that plays the role of combination and separation, its specific structure is as Figures 3 - 6As shown, in one embodiment, one of the front part 211 and the rear part 212 of the first sliding plate 21 is provided with a coupling rod 231 extending in the second direction, and the other is provided with a coupling hole 232 cooperating with the coupling rod 231. For example, the coupling rod 231 protrudes from the front part of the rear part 212 in the second direction, which is the same as the sliding direction of the drilling assembly 22. When the drilling assembly 22 is in the first working position, the coupling rod 231 is inserted into the coupling hole 232. On the contrary, when the drilling assembly 22 is in the first standby position, the coupling rod 231 withdraws from the coupling hole 232. Therefore, the switching between the first working position and the first standby position of the drilling assembly 22 can achieve coupling and separation without redundant unlocking parts, with a simple structure, and complete the coupling / separation of the grouting assembly 3 and the drilling assembly 22.

[0109] As Figure 10 and Figure 11 shown, in one embodiment, a driving mechanism for driving the front part 211 of the first sliding plate 21 to slide along the first direction is provided on the propulsion beam 1. The driving mechanism includes a first chain 11 arranged along the first direction, and the front part 211 of the first sliding plate 21 is fixedly connected to a part of the first chain 11. A driving sprocket 12 and a driven sprocket 13 are respectively arranged at the rear end and the front end of the propulsion beam 1, which are tightly engaged with the first chain 11 to make it in a closed waist shape. Driven by the driving sprocket 12, the first sliding plate 21 slides back and forth synchronously with the first chain 11 to complete drilling or conveying the anchor rod. Compared with the belt transmission mechanism, it has higher precision, a simple structure, is easy to maintain, and is suitable for the environment of high-frequency vibration.

[0110] For some operating arms with longer lengths (for example, the length is greater than 3 meters), in order to protect the drill rod 6 fixedly connected to the drilling assembly 22 from being twisted or broken.

[0111] As Figure 1 、 Figures 15 - 28 shown, in one embodiment, the operating arm further includes a rod bracket 4 for supporting the drill rod 6. The rod bracket 4 is fixedly connected to the propulsion beam 1 and is provided with a rotating mechanism itself, which can rotate to leave a space for the drilling assembly 22 to continue sliding along the first direction. Specifically: when the drilling assembly 22 slides close to the rod bracket 4, the rod bracket 4 disengages from the drill rod 6 and rotates, so that the drilling assembly 22 can continue to slide to complete the subsequent drilling operation.

[0112] A linkage assembly 5 with a clutch device 51 is provided between the rod bracket 4 and the drilling assembly 22 to realize the fixed or sliding state of the rod bracket 4 relative to the propulsion beam 1.

[0113] The rod bracket 4 can move synchronously with the drilling assembly 22 along the second direction, and the two have:

[0114] In the combined state, the drilling assembly 22 slides along the first direction with the first slide plate 21, the clutch device 51 disengages, and the linkage assembly 5 does not work, causing the rod bracket 4 to be fixed relative to the propulsion beam 1;

[0115] In the separated state, the drilling assembly 22 slides along the second direction, the clutch device 51 engages, and the linkage assembly 5 works. Driven by the sliding of the drilling assembly 22, the rod bracket 4 slides synchronously. When the drill pipe 6 is in the first standby position, it is not subjected to bending stress. Compared with the traditional structure that relies on the deformation of the drill pipe itself to achieve deflection, after the drilling assembly 22 repeatedly switches its position state, the drill pipe is repeatedly subjected to bending stress and finally breaks. In the operating arm of the present application, the drill pipe 6 always maintains the same axis as the drilling assembly 22 and is not subjected to bending stress, improving the use safety.

[0116] In one embodiment, at the first working position, a fiber guiding mechanism 14 for clamping the front end of the drill pipe or anchor rod is provided at the front end of the propulsion beam 1. The drilling assembly 22 is fixedly connected to the rear end of the drill pipe 6, and the rod bracket 4 is generally arranged in the middle of the propulsion beam 1 to support the middle of the drill pipe. In the case of three-point support for the drill pipe 6, compared with the traditional structure that only supports the front and rear ends of the drill pipe, it avoids the bending and even breaking of the longer drill pipe 6 during drilling, improving the use safety.

[0117] In one embodiment, the clutch device 51 includes a first engaging member 511 and a second engaging member 512 that cooperate with each other. The first engaging member 511 is linked with the drilling assembly 22, and the second engaging member 512 is linked with one of the components in the linkage assembly 5 to drive the rod bracket 4 to slide synchronously; when the drilling assembly 22 slides along the first direction with the first slide plate 21, the two engaging members disengage, and when the drilling assembly 22 slides along the second direction, the two engaging members engage. Both engaging members are assembled by multiple plates. Among them, the first engaging member 511 is fixedly connected to the rear part 212 and slides synchronously with the drilling assembly 22. The second engaging member 512 is slidably fixed to the propulsion beam 1, and a locking device is generally provided between the two, and has:

[0118] In the movable state, the clutch device 51 engages, prompting the locking device to unlock, and the rod bracket 4 and the drilling assembly 22 can slide synchronously;

[0119] In the fixed state, the clutch device 51 is separated, the locking device is locked, the rod bracket 4 is fixed relative to the propulsion beam 1, and the rod bracket 4 is prevented from shifting when the drilling assembly 22 slides along the first direction. The drill rod 6 is always supported by at least two points and remains straight without being subjected to bending stress. The specific separation operation is as follows: the first engaging member 511 fixedly connected to the drilling assembly 22 and the second engaging member 512 have two opposite sides, one of which is provided with a slot 5111 with an opening, and the other side is provided with a block 5121 that can enter the slot from the opening. When the drilling assembly 22 slides along the first direction with the first slide 21, the block 5121 is separated from the slot 5111 at the opening. The opening is oriented toward the rear end along the first direction and is U-shaped. The block 5121 is protruded along the second direction and has an annular boss 5122 that limits itself from escaping from the slot 5111 along the second direction. When combined, the rod bracket 4 can reciprocate synchronously with the drilling assembly 22 along the second direction, and the drill rod is always kept free from bending stress.

[0120] In one embodiment, the linkage assembly 5 includes a first rack 521 and a second rack 522 respectively linked to the drilling assembly 22 and the rod bracket 4, and a transmission rod 525 fixed on the propulsion beam 1 and provided with a first gear ring 523 and a second gear ring 524 at both ends, the first gear ring 523 and the second gear ring 524 are respectively meshed with the first rack 521 and the second rack 522, and the second engaging member 512 is fixedly connected to the first rack 521. The side wall of the propulsion beam 1 is fixedly connected with a slide rail seat 526 extending along the second direction. The slide rail seat 526 is divided into two groups, which are respectively placed under the second engaging member 512 and the rod bracket 4. The above two racks are respectively slidably mounted on the two slide rail seats 526, and the two gear rings are respectively fixedly mounted on the corresponding lower part of the slide rail seat 526. The specific synchronous sliding method is:

[0121] The drilling assembly 22 slides in the second direction, driving the second engaging member 512 and the first rack 521 fixedly connected thereto to slide synchronously in the same direction, and the first gear ring 523 rotates, and the transmission rod 525 drives the second gear ring 524 to rotate synchronously in the same direction as the first gear ring 523, so that the second rack 522 slides synchronously in the same direction as the first rack 521. The whole process is completely synchronized, and the gear meshing accuracy is high, so as to ensure that the drill rod is never subjected to bending stress.

[0122] In one embodiment, the linkage assembly 5 includes a locking device 53, which is used to be in a locked state when the drilling assembly 22 slides along the first direction, preventing the rod bracket 4 from shifting due to high-frequency vibration, so that when the drilling assembly 22 is drilling, the rod bracket 4 is prevented from sliding and deviating due to vibration, which may cause the drill rod to break after being stressed in the middle. When the drilling assembly 22 slides along the second direction, the locking device 53 is released to achieve the function of synchronous sliding of the rod bracket 4 and the drilling assembly 22.

[0123] In one embodiment, the locking device 53 includes a bolt 531 slidably mounted on the second engaging member 512, an elastic reset member 532 acting on the bolt 531, and a bolt hole 533 provided on the propulsion beam 1 and cooperating with the bolt 531. When the drilling assembly 22 slides in the first direction, the two engaging members are separated, and the bolt 531 is inserted into the bolt hole 533. When the drilling assembly 22 slides in the second direction, the two engaging members are combined, and the bolt 531 withdraws from the bolt hole 533. Generally, a unlocking member for driving the bolt 531 to insert / withdraw from the bolt hole 533 is provided between the two engaging members. Depending on the change in the sliding direction of the drilling assembly 22, the unlocking member is driven, thereby changing the locking device 53 to switch between the locked state and the unlocked state to cooperate with the operation of the drilling assembly 22 and the synchronous sliding function of the rod bracket 4.

[0124] In one embodiment, a trigger member 534 connected to the bolt 531 by a lever mechanism is provided on the second engaging member 512, and the first engaging member 511 has an inclined surface for pressing the trigger member to unlock the locking device 53. The lever structure includes a rotating pin 535 on the second engaging member 512 as a fulcrum, a first connecting plate 536 fixedly connected to the trigger member 534, and a second connecting plate 537 connected to the bolt 531. The first connecting plate 536 and the second connecting plate 537 are the first force arm and the second force arm respectively. Both connecting plates are pivotally fixed to the rotating pin 535 and rotate in the same direction around the rotating pin 535, and the rotation of one connecting plate depends on the driving of the other connecting plate to achieve the unlocking or releasing of the locking device. Specifically:

[0125] Unlocking: The drilling assembly 22 slides rearward in the first direction until the first engaging member 511 presses the trigger member 534. When it continues to slide until it stops, during this process, the first connecting plate 536 rotates counterclockwise under the drive of the trigger member 534, drives the second connecting plate 537 to rotate counterclockwise by relying on the rotating pin 535. The bolt 531 fixed at the free end of the second connecting plate 537 moves vertically upward. At the same time, the elastic reset member 532 is compressed. Finally, the bolt 531 completely withdraws from the bolt hole 533, and the unlocking is completed. The drilling assembly 22 can slide in the second direction at any time and drive the rod bracket 4 to slide synchronously;

[0126] Locking, the drilling assembly 22 slides forward along the first direction until the first engaging member 511 disengages from the triggering member 534. During this process, the elastic reset member 532 drives the bolt 531 to move vertically downward into the bolt hole 533, pulling the second connecting plate 537 to rotate clockwise around the rotating pin 535. The first connecting plate 536 is driven by the rotating pin 535 to rotate clockwise until the bolt 531 completely enters the bolt hole 533 and then stops, restricting the rod bracket 4 from shifting during the drilling of the drilling assembly 22. The unlocking and unlocking operations of the locking device 53 are interlocked with the position state switching of the drilling assembly 22, enabling the rod bracket 4 to slide synchronously or be relatively fixed along with the state switching of the drilling assembly 22, with high synchronism and always ensuring that the drill pipe is not affected by bending stress. Among them, the triggering member 534 is a cylinder, with smoother contact with the inclined plane during guiding, and the unlocking operation is more fluent.

[0127] In another embodiment, as Figure 18 、 Figures 29 - 33 shown, the clutch device 51 includes a mutually cooperating first engaging member 511 and a second engaging member 512. The first engaging member 511 is linked with the drilling assembly 22, and the second engaging member 512 is linked with one of the components in the linkage assembly 5. Among them, the second engaging member 512 has a slot 5111, and the first engaging member 511 has a locking block 5121 that cooperates with the slot 5111. The locking device 53 includes a movable pin 551 slidably mounted on the second engaging member 512 along the first direction. One end of the movable pin 511 is an unlocking end that abuts against the first engaging member 511 to trigger unlocking, and the other end is a locking end provided with a plug block 538. Correspondingly, a slot 539 that cooperates with the plug block 538 is provided on the propulsion beam 1. Among them, an elastic member 552 for driving its reset is provided on the movable pin 551, and in this embodiment, the slot 529 is provided on the slide rail base 526. The specific clutch locking method is as follows:

[0128] Unlocking, the first engaging member 511 retreats along the first direction with the drilling assembly 22 to the first working position, relying on the locking block 5121 to slide and insert into the slot 5111, and abutting against the movable pin 551 to slide along the first direction until the plug block 538 exits the slot 539, and the unlocking is completed. At the same time, the elastic member 552 is compressed, and the drilling assembly 22 can slide in the second direction at any time and drive the second engaging member 512 to shift synchronously;

[0129] Locked, the first engaging member 511 moves forward along the first direction with the drilling assembly 22, causing the locking block 5121 to exit the card slot 5111. The elastic member 552 drives the movable pin 551 to reset along the first direction, and then the insertion block 538 is snapped into the slot 539, so that the second engaging member 512 is relatively fixed to the slide rail base 526, and the rod bracket 4 is fixed relative to the propulsion beam 1, ensuring the stability of the drilling operation. The matching structure of the clutch device 51 and the locking device 53 in this embodiment is simpler and has higher stability. In a preferred embodiment, as Figure 33 shown, a side shift device 540 that slides along the second direction is fixedly installed on the outside of the second engaging member 512. The side shift device 540 is generally a hydraulic cylinder, which assists the drilling assembly 22 to switch to the first standby position faster.

[0130] For the operating arm of the rock drilling jumbo in this application, the drilling assembly 22 and the grouting assembly 3 are improved to be arranged front and back. The grouting assembly 3 is switched with the drilling assembly 22 by avoiding through the lifting frame 32, rather than being arranged in parallel. The grouting assembly 3 is always on the propulsion beam 1, obtaining strong fixed support, reducing the vibration caused by high-frequency drilling, and extending the service life. Moreover, the drilling assembly 22 is provided with an independent sliding mechanism, and only needs to avoid the grouting pipe 31. Therefore, the sliding stroke is reduced, so that when in the second working position, a part of the drilling assembly 22 is on the propulsion beam 1, reducing the center of gravity offset and improving the hole alignment accuracy of the grouting assembly 3.

[0131] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification. When the technical features in different embodiments are shown in the same drawing, it can be regarded that the drawing also discloses the combination examples of the respective embodiments involved at the same time.

[0132] The above embodiments only represent several implementation manners of this application, and their descriptions are relatively specific and detailed, but they should not be understood as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several deformations and improvements can still be made, and these all belong to the protection scope of this application.

Claims

1. The operating arm of a bolt rig, characterized in that, it includes: a propulsion beam extending along a first direction, which is the length direction of the propulsion beam itself; a first slide plate slidably mounted on the propulsion beam and capable of reciprocatingly sliding along the first direction. The first slide plate is divided into a front part and a rear part along the first direction, and there is a combined state in which they can slide synchronously and a separated state in which they can slide independently between the front part and the rear part; a drilling assembly including a drill pipe, slidably mounted on the rear part of the first slide plate, capable of reciprocatingly sliding along a second direction, and having a first working position for drilling the rock wall and a first standby position for avoiding the grouting assembly. The first direction and the second direction are perpendicular to each other; a grouting assembly mounted on the front part of the first slide plate, including a grouting pipe and a lifting frame for moving the grouting pipe. The grouting pipe has a second working position for grouting into the drill hole and a second standby position for avoiding the drilling assembly; the grouting pipe and the drilling assembly are alternately in their respective working positions. When the drilling assembly enters the first working position, the lifting frame drives the grouting pipe to rise away from the propulsion beam and enter the second standby position. When the drilling assembly is in the first standby position, the lifting frame can drive the grouting pipe to descend close to the propulsion beam and enter the second working position; when the drilling assembly is in the first working position, the front part and the rear part of the first slide plate are in the combined state, and when the grouting pipe is in the second working position, the front part and the rear part of the first slide plate are in the separated state.

2. The operating arm of the bolt rig according to claim 1, characterized in that, the lifting frame includes a first support rod and a second support rod hinged to the front part of the first slide plate. The grouting pipe is also hinged to the first support rod and the second support rod at the same time. The front part of the first slide plate, the first support rod, the second support rod and the grouting pipe form a foldable four-bar linkage mechanism.

3. The operating arm of the bolt rig according to claim 2, characterized in that, during the process of moving the grouting pipe by the lifting frame, the first support rod and the second support rod rotate in the same direction and always keep the grouting pipe extending along the first direction.

4. The operating arm of the bolt rig according to claim 1, characterized in that, the grouting assembly includes a fixed seat rotatably cooperating with the grouting pipe and a power device mounted on the fixed seat for driving the grouting pipe to rotate. The grouting pipe has a feed port and a discharge port, and a nut sleeve for rotating the bolt nut to lock the bolt is provided at the discharge port.

5. The operating arm of the bolt rig according to claim 4, characterized in that, a collision-proof nozzle axially protruding from its end and capable of relatively sliding is provided at the discharge port of the grouting pipe, and a buffer spring acting on the collision-proof nozzle is sleeved outside the grouting pipe.

6. The operating arm of the bolt rig according to claim 5, characterized in that, the collision-proof nozzle includes a conical barrel part and a straight barrel part sleeved with the grouting pipe, and the nut sleeve has a limiting protrusion radially protruding from the outer wall of the grouting pipe to limit the separation of the collision-proof nozzle.

7. The operating arm of the bolt rig according to claim 1, characterized in that, The front part of the first slide plate is driven by a driving mechanism to slide along a first direction. The driving mechanism includes a first chain arranged along the first direction, and the front part of the first slide plate is fixedly connected to a part of the first chain.

8. The operating arm of the rock bolter according to claim 1, characterized in that one of the front part and the rear part of the first slide plate is provided with a coupling rod extending along a second direction, and the other is provided with a coupling hole cooperating with the coupling rod.

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