The operating arm of a bolter that can keep the hose taut

Abstract

The present application discloses an operating arm of a bolt rig, which includes a propulsion beam, a drilling assembly, a coil reel, and a first hose. The propulsion beam extends along a first direction; the drilling assembly is used for drilling holes in a rock wall, is slidably mounted on the propulsion beam, and can reciprocate along the first direction; the coil reel is slidably mounted on the propulsion beam, can reciprocate along the first direction together with the drilling assembly, and its sliding speed is half of that of the drilling assembly; one end of the first hose is connected to the drilling assembly, the other end is fixed on the propulsion beam, and the middle bypasses the coil reel and remains in a tensioned state when the drilling assembly and the coil reel slide along the first direction. By fixing the first hose semi-circularly between the propulsion beam and the drilling assembly through the coil reel, the length of the first hose is shortened, and it slides synchronously with the drilling assembly, eliminating the reaction force on the drilling assembly and always keeping the first hose in a tensioned state.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel construction, and specifically to an operating arm of a bolt trolley that can keep a rubber hose tightened. Background Art

[0002] A 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, bolt trolleys generally come with an operating arm (manipulator arm) and a manual maintenance platform. However, since the grouting component and the drilling component work alternately, there are two sets of independent pipelines configured. Most bolt trolleys with a shorter stroke (drilling depth) can complete the switching work between the grouting component and the drilling component by fixedly arranging corresponding telescopic pipelines on the operating arm. For bolt trolleys with a longer stroke, due to the longer telescopic pipelines, during the elongation process, the pipelines will generate a reaction force that restricts the sliding forward of the grouting component and the drilling component, affecting the operation; during the retraction process, the pipelines are prone to looseness, unable to be recovered and affecting the reset of the grouting component and the drilling component. Moreover, the pipelines are too long, the space for storing the pipelines is too large, the structure is complex, and the quality of the operating arm is increased.

[0003] Therefore, when the grouting component and the rock drill are placed on the same operating arm, how to set the corresponding pipelines when the rock drill and the grouting component switch work still needs to be solved. Summary of the Invention

[0004] The present application provides an operating arm of a bolt trolley that can keep a rubber hose tightened, so that the rubber hose always slides synchronously with the drilling component.

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

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

[0007] A drilling component for drilling on a rock wall, slidably installed on the propulsion beam and reciprocally slidable along the first direction;

[0008] A coiler, slidably installed on the propulsion beam, capable of reciprocally sliding along the first direction together with the drilling component, and having a sliding speed that is half of that of the drilling component;

[0009] A first rubber hose, one end of which is connected to the drilling component, the other end is fixed on the propulsion beam, and the middle part bypasses the coiler, and remains in a tightened state when the drilling component and the coiler slide along the first direction.

[0010] The following also provides several optional ways, which are not additional limitations to the above overall solution, but only further supplements or optimizations. Without technical or logical contradictions, each optional way can be combined with the above overall solution alone, or multiple optional ways can be combined with each other.

[0011] Optionally, a first chain for driving the drilling assembly to slide along a first direction and a second chain extending along the first direction are provided on the propulsion beam, and a follower gear that can mesh with both and move synchronously with the coiler is provided in the gap between the first chain and the second chain.

[0012] Optionally, the operating arm of the bolt trolley includes:

[0013] A first slide plate, which 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, and has a first working position and a first standby position for preparing to drill the rock wall, and the second direction is perpendicular to the first direction;

[0014] A second slide plate, which is slidably mounted on the propulsion beam and can reciprocate along the first direction, the follower gear is mounted on the second slide plate and moves synchronously with the second slide plate, and the coiler is slidably mounted on the second slide plate and can reciprocate along the second direction along with the drilling assembly.

[0015] Optionally, the operating arm of the bolt trolley includes a grouting assembly, the grouting assembly is mounted on the first slide plate and includes a grouting pipe that can move relative to the first slide plate, and the grouting pipe has a second working position for preparing to dock with the bolt and grout into the drill hole and a second standby position for avoiding the drilling assembly, and the grouting assembly and the drilling assembly are alternately in their respective working positions.

[0016] Optionally, the grouting assembly includes a lifting frame for moving the grouting pipe to switch between the second working position and the second standby position; the lifting frame includes a first support rod and a second support rod hinged to the front part of the first slide plate, and the grouting pipe is also hinged to the first support rod and the second support rod at the same time, and 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.

[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 in which they can slide synchronously and a separated state in which they can slide independently between the front part and the rear part;

[0018] A part of the first chain is fixedly connected to the front part to drive the front part to slide along the first direction;

[0019] The drilling assembly is slidably mounted on the rear part of the first slide plate, and when the drilling assembly is in the first working position, the front part and the rear part of the first slide plate are in a combined state; the grouting assembly is mounted on the front part of the first slide plate, 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 a separated state.

[0020] Optionally, when the drilling assembly is preparing for work, the follower gear is always engaged with the first chain, disengages from the second chain before the drilling assembly works, and at the initial stage of the drilling assembly sliding in the first direction, the coiler is driven by the drilling assembly through the first hose to engage with the second chain.

[0021] Optionally, the first chain is a circular closed chain, a driving gear engaged with the first chain to drive its circular rotation is arranged at the end of the propulsion beam, and the coiler is arranged above the driving gear through a bracket fixed on the second slide plate.

[0022] Optionally, when the drilling assembly is preparing to drill, the first slide plate and the second slide plate are abutted against each other. Optionally, a first mounting seat and a second mounting seat that can reciprocally slide in the second direction are respectively arranged on the first slide plate and the second slide plate, the drilling assembly and the coiler are respectively installed and fixed on the first mounting seat and the second mounting seat, a coupling member extending towards the second mounting seat is arranged at the tail of the first mounting seat, and a coupling groove cooperating with the coupling member is arranged on the second mounting seat.

[0023] For the operating arm of the bolter of the present application, the first hose always slides synchronously with the drilling assembly, avoiding pulling the drilling assembly, and the sliding speed of the first hose is half of that of the drilling assembly, and the hose is always kept in a tensioned state during the process of the drilling assembly drilling forward and resetting and moving backward. Description of the Drawings

[0024] Figure 1 It is the front view of the operating arm of the bolter according to an embodiment of the present application;

[0025] Figure 2 It is a schematic diagram of the operation of the drilling assembly of the operating arm of the bolter of the present application;

[0026] Figure 3 It is the side view of the operating arm of the bolter of the present application;

[0027] Figure 4 It is a sectional view of the operating arm of the bolter of the present application along the first direction;

[0028] Figure 5 It is a schematic diagram of the bending change of the hose drag chain in the operating arm of the bolter of the present application;

[0029] Figure 6 It is a schematic diagram of the combined state of the front part and the rear part in the operating arm of the bolter of the present application;

[0030] Figure 7 It is a schematic diagram of the separated state of the front part and the rear part in the operating arm of the bolter of the present application;

[0031] Figure 8 Schematic diagram of the hose fixing bracket in the operating arm of the bolt rig of the present application;

[0032] Figure 9 Exploded view of the installation of the first slide plate and the first chain in the operating arm of the bolt rig of the present application;

[0033] Figure 10 is Figure 4 Enlarged view of part C in;

[0034] Figure 11 is Figure 4 Enlarged view of part A in;

[0035] Figure 12 is Figure 4 Enlarged view of part B in;

[0036] Figure 13 is Figure 12 Schematic diagram of the follower gear in the starting stage of;

[0037] Figure 14 Exploded view of the installation of the second mounting seat in the operating arm of the bolt rig of the present application;

[0038] Figure 15 Stereogram of the second mounting seat in the operating arm of the bolt rig of the present application;

[0039] Figure 16 is Figure 15 Schematic diagram of another state;

[0040] Explanation of the reference numerals in the figure is as follows:

[0041] 1. Thrust beam; 11. First chain; 12. Driving gear; 13. Driven sprocket; 14. Second chain;

[0042] 15. Follower gear;

[0043] 21. First slide plate; 211. Front part; 212. Rear part; 2121. First mounting seat; 2122. Coupling;

[0044] 22. Drilling assembly;

[0045] 231. Coupling rod; 232. Coupling hole;

[0046] 24. Coiler; 25. First hose; 251. Hose fixing bracket; 2511. Through hole;

[0047] 26. Clamping block; 27. Second slide plate; 2711. Second mounting seat; 2712. Coupling groove; 29. Motor;

[0048] 3. Grouting assembly; 31. Grouting pipe;

[0049] 32. Lifting frame; 321. First support rod; 322. Second support rod; 323. Driving device;

[0050] 33. Hose drag chain; 34. Second hose; 35. Crossbar;

[0051] 6. Drill pipe; 7. Anchor rod. Specific implementation manner

[0052] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with 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. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0053] 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.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled 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.

[0055] In this application, terms such as "first" and "second" 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" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0056] As Figure 1 and Figure 2 shown, this application provides an operating arm of an anchor rod jumbo, including a propulsion beam 1, a drilling assembly 22, a coiler 24, and a first hose 25.

[0057] 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 operation of the equipment installed thereon, such as the drilling operation of the drilling assembly.

[0058] The drilling assembly 22 is inserted and fixed to the drill pipe 6, which is used to drill an anchor bolt installation hole in the rock wall and is slidably mounted on the propulsion beam 1. Specifically, it slides forward for drilling work and slides backward for resetting.

[0059] The coil reel 24 has multiple grooves to facilitate the coiling of the first hose 25. It is slidably mounted at the rear end of the propulsion beam 1 and behind the drilling assembly 22, and can synchronously slide along the first direction with the drilling assembly 22, and the sliding speed is half of that of the drilling assembly 22.

[0060] The first hose 25 includes pipelines for conveying hydraulic oil or compressed air to the coil reel 24 and for power supply. One end of it is fixedly connected to the middle of the propulsion beam 1, and the other end extends backward, bypasses the coil reel 24, and then extends forward and is fixedly connected to the drilling assembly 22.

[0061] In the operating arm of this embodiment, the first hose 25 slides synchronously with the drilling assembly 22 in a manner similar to that of a movable pulley. Compared with the traditional structure, the length of the first hose 25 is half of that of the propulsion beam 1 and can always maintain a tensioned state, avoiding slackness when the drilling assembly 22 returns to its position, thus preventing failures, and reducing the weight of the operating arm.

[0062] As Figures 1 to 4 and Figures 8 to 12 shown, in one embodiment, a first chain 11 for driving the drilling assembly 22 to slide along the first direction and a second chain 14 extending along the first direction are provided on the propulsion beam 1. A follower gear 15 that can mesh with both of them and moves synchronously with the coil reel 24 is arranged in the gap between the first chain 11 and the second chain 14. A driving gear 12 and a driven sprocket 13 are respectively arranged at the rear end and the front end of the propulsion beam 1. The first chain 11 is tightly fixedly connected to form an enclosed waist shape. The driving gear 12 is connected to a motor 29 that drives it to rotate. The second chain 14 is a straight chain, fixedly connected inside the propulsion beam 1 and below the first chain 11. The specific working principle is as follows:

[0063] When the motor 29 operates, the first chain 11 moves driven by the driving gear 12, causing the follower gear 15 to rotate. Since the follower gear 15 also meshes with the second chain 14, it moves forward or backward relative to the second chain 14. At the same time, it drives the coil reel 24 fixed to the follower gear 15 to slide together.

[0064] As Figure 1 and Figure 8 shown, in one embodiment, a hose fixing bracket 251 is provided on one side of the middle of the propulsion beam 1. Multiple through holes 2511 of different sizes are provided on the hose fixing bracket 251 for passing through and fixing the wire pipes of different thicknesses and functions in the first hose 25.

[0065] AsFigures 1 to 9 As shown, in one embodiment, the operating arm includes a first slide 21, a drilling assembly 22, and a second slide 27, wherein the first slide 21 is slidably mounted on the propulsion beam 1 and can slide back and forth in a first direction, the drilling assembly 22 is slidably mounted on the first slide 21 and can slide back and forth in a second direction, and has a first working position and a first standby position for preparing to drill a rock wall, and the second direction is perpendicular to the first direction. The second slide 27 is slidably mounted on the propulsion beam 1 and can slide back and forth in a first direction, the follower gear 15 is mounted on the second slide 27 and moves synchronously with the second slide 27, and the hose reel 24 is slidably mounted on the second slide 27 and can slide back and forth in the second direction together with the drilling assembly 22. In the first working position, 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 a rock wall;

[0066] In the first standby position, after the drilling is completed, the drilling assembly 22 has retreated to the rear end of the propulsion beam 1 along the first direction, and slides along the second direction, driving the drill rod 6 to shift synchronously, avoiding the space for other components to work, such as the grouting operation of the grouting assembly 3. At the same time, it drives the hose reel 24 to slide synchronously along the second direction to avoid the drilling assembly 22 hitting the first hose 25 and causing damage.

[0067] The operating arm also includes a grouting assembly 3 installed on the first slide 21 and working alternately with the drilling assembly 22. The grouting assembly 3 includes a grouting pipe 31 that can move relative to the first slide 21. The grouting pipe 31 has a second working position ready to grout into the borehole and a second standby position to avoid the drilling assembly 22. When the grouting assembly 3 is working, the follower gear 15 is only engaged with the first chain 11. At this time, the follower gear 15 remains idle relative to the propulsion beam 1 to maintain synchronization with the drilling assembly 22.

[0068] Accordingly, refer to Figure 1 , Figure 2 and Figure 5 The operating arm is also provided with a second hose 34, and a plurality of crosspieces 35 extending perpendicularly to the first direction on the side of the propulsion beam 1, the crosspiece 35 is used to support the second hose 34, the second hose 34 includes a pipeline for conveying hydraulic oil or compressed air, slurry, and power supply to the grouting assembly 3, which is arranged parallel to the first direction on the side of the recommended beam 1 opposite to the first hose 25, and the specific working principle is referred to Figure 5 When the grouting assembly 3 moves forward, the second rubber hose 34 pulls, causing the rubber hose drag chain 33 to bend accordingly, thereby completing the follow-up movement with the grouting assembly 3. Preferably, the rubber hose drag chain 33 is made of steel, the crosspiece 35 is magnetic, and multiple nodes are fixed by suction, so as to keep the rubber hose drag chain 33 placed on the crosspiece 35 horizontal and stable, and avoid shaking during operation.

[0069] As shown Figure 5 in the figure, 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. When in the second working position, the grouting pipe 31 descends close to the propulsion beam 1 until the axis is aligned with the bolt installation hole. When in the second standby position, the grouting pipe 31 ascends away from the propulsion beam 1 to provide space for the drilling assembly 22 to slide forward, realizing the alternating operation of the drilling assembly 22 and the grouting assembly 3.

[0070] In the second working position, the drilling assembly 22 slides to the first standby position, and the grouting pipe 31 moves close to the propulsion beam 1 until its axis is aligned with the bolt installation hole. The grouting pipe 31 can be docked with the bolt 7 for grouting, or can directly slide to align with the bolt installation hole for grouting;

[0071] In the second standby position, the grouting pipe 31 moves away from the propulsion beam 1 until a space is left for the drilling assembly 22 to complete the drilling operation when in the first working position.

[0072] Combined with the position change of the drilling assembly 22, the specific operation process is as follows: When 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 drilling operations. 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, a 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 bolt 7, slides forward along the first direction, sends the bolt 7 into the bolt installation hole, and then conveys the slurry. After the grouting operation is completed, the grouting assembly 3 retreats to the original 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 operations.

[0073] 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, both the grouting assembly 3 and the drilling assembly 22 in the operating arm of the present application 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 in the case of high-frequency drilling, and improving the product stability. When in the second working position, compared with the structure where the traditional drilling assembly 22 is entirely 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.

[0074] In one embodiment, the lifting frame 32 includes a first support rod 321 and a second support rod 322 hinged to the front portion 211 of the first slide plate 21. The grouting pipe 31 is also hinged to the first support rod 321 and the second support rod 322. The front portion 211 of the first slide 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 portion 211. The driving device 323 drives the support rod and relies on the four-bar linkage mechanism to complete the folding / unfolding operation. When the four-bar linkage mechanism folds, the grouting pipe 31 descends close to 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 work of the grouting pipe 31, so that the sliding stroke along the second direction is reduced, the amount of center-of-gravity offset 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 installation hole is improved, and it is convenient for subsequent conveying of the anchor rod 7 or direct grouting operation. Among them, the preferred solution is that 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 always extends along the first direction. The four-bar linkage mechanism is a parallelogram structure, so that the grouting pipe 31 always remains 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 remains coaxial with the anchor installation hole, facilitating the horizontal installation of the anchor rod 7.

[0075] Such as Figures 1 to 10As shown, in one embodiment, the first slide plate 21 is divided into a front part 211 and a rear part 212 along a first direction. There is a combined state where they can slide synchronously and a separated state where they can slide independently between the front part 211 and the rear part 212; A part of the first chain 11 is fixedly connected to the front part 211 to drive the front part 211 to slide along the first direction; The drilling assembly 22 is slidably mounted on the rear part 212 of the first slide plate 21. When the drilling assembly 22 is in the first working position, the front and rear parts of the first slide plate 21 are in the combined state; The grouting assembly 3 is mounted on the front part 211 of the first slide plate 21. When the grouting pipe 31 is in the second working position, the front part 211 and the rear part 212 of the first slide plate 21 are in the separated state. A clamping block 26 fixedly connected by bolts is arranged at the bottom of the front part 211. The clamping block 26 is clamped and fixed on the first chain 11 to realize the fixed connection between the front part 211 and the first chain 11. The structure for the mutual combination / separation between the front part 211 and the rear part 212 is a combination rod 231 arranged on one of them and a combination hole 232 arranged on the other and cooperating with the combination rod 231. When the drilling assembly 22 is in the first working position, the combination rod 231 is inserted into the combination hole 232. When the first chain 11 moves, the two slide synchronously. And since the anchor rod 7 is not installed on the grouting assembly 3 at this time, it can slide synchronously with the drilling assembly 22. When the drilling assembly 22 is in the first standby position, the combination rod 231 disengages from the combination hole 232, and the two are separated. When the first chain 11 moves, only the grouting assembly 3 slides forward alone for grouting operation, avoiding the drilling assembly 22 with the drill rod 6 inserted and fixed from sliding forward and hitting the rock wall.

[0076] As Figures 1 to 4 , Figure 12 and Figure 13 shown, in one embodiment, the follower gear 15 is always in mesh with the first chain 11 and disengages from the second chain 14 before the drilling assembly 22 works. In the initial stage when the drilling assembly 22 slides along the first direction, the drilling assembly 22 slides forward and pulls the first rubber hose 25. The coiler 24 is driven to slide forward a short distance through the first rubber hose 25, then the follower gear 15 moves a certain distance accordingly, and then meshes with the second chain 14, and then moves forward at half the speed relative to the drilling assembly 22. Compared with the traditional structure where the follower gear 15 is always in mesh with the second chain 14, it can achieve idling during the grouting operation of the grouting assembly 3.

[0077] The specific sliding structure between the coiler 24 and the second slide plate 27 is specifically as Figures 14 to 16As shown, in one embodiment, a first mounting base 2121 and a second mounting base 2711 that can reciprocally slide along a second direction are respectively provided on a first slide plate 21 and a second slide plate 27. A drilling assembly 22 and a coiler 24 are respectively mounted and fixed on the first mounting base 2121 and the second mounting base 2711. A coupling member 2122 extending towards the second mounting base 2711 is provided at the tail of the first mounting base 2711, and a coupling groove 2712 cooperating with the coupling member 2122 is provided on the second mounting base 2711. The first mounting base 2121 and the first slide plate 21 are driven by an oil cylinder to slide along the second direction, and a slide rail and a slide block are provided between the two mounting bases and the corresponding slide plates to achieve sliding in the second direction. When the drilling assembly 22 is in a first working position, the coupling member 2122 and the coupling groove 2712 are mutually combined, so that the two mounting bases laterally move synchronously. When the drilling assembly 22 drills forward, the coupling member 2122 and the coupling groove 2712 are separated, and the coiler 24 moves forward at half the speed of the drilling assembly 22, always keeping the first rubber hose 25 in a tensioned state. Among them, the coupling member 2122 is generally a columnar fixing block, which is fixedly welded or bolted to the first mounting base 2121.

[0078] Since the pipeline of the first rubber hose 25 is numerous and complex, in one embodiment, the coiler 24 is arranged above the driving gear 12 through a bracket 28 fixed on the second slide plate 27, so that when the drilling assembly 22 is in a preparation working state, there is a bending space at one end between the coiler 24 and the drilling assembly 22, which is convenient for coiling. In one embodiment, when the drilling assembly 22 is preparing to drill, the first slide plate 21 and the second slide plate 27 are abutted against each other, shortening the distance of the connection section between the first rubber hose 25 and the drilling assembly 22, and the structure is more compact.

[0079] The operating arm of the rock drilling jumbo of the present application fixes the first rubber hose 25 in a semi-circular manner between the propulsion beam 1 and the drilling assembly 22 through the coiler 24, shortens the length of the first rubber hose 25, and relies on the follower gear 15 to cooperate with the second chain 14 to slide synchronously with the drilling assembly 22, eliminating the reaction force on the drilling assembly 22, and always keeping the first rubber hose 25 in a tensioned state.

[0080] The technical features of the above embodiments can be arbitrarily combined. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope recorded in this specification. When the technical features in different embodiments are embodied in the same drawing, it can be regarded that the drawing also discloses the combined examples of the various embodiments involved at the same time.

[0081] The above embodiments only illustrate several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application.

Claims

1. The operating arm of a bolter, characterized in that, Comprising: A propulsion beam extending along a first direction; A first slide plate slidably mounted on the propulsion beam and reciprocally slidable 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 of synchronous sliding and a separated state of independent sliding between the front part and the rear part; A second slide plate slidably mounted on the propulsion beam and reciprocally slidable along the first direction; A drilling assembly including a drill pipe for drilling in a rock wall. The drilling assembly is slidably mounted on the rear part of the first slide plate and reciprocally slidable along the first direction. The drilling assembly is also reciprocally slidable along a second direction and has a first working position and a first standby position for preparing to drill the rock wall. The second direction is perpendicular to the first direction; A grouting assembly mounted on the front part of the first slide plate, including a grouting pipe movable relative to the first slide plate. 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 and the drilling assembly are alternately in their respective working positions. When the drilling assembly is in the first working position, the front part and the rear part of the first slide plate are in a combined state. When the grouting pipe is in the second working position, the front part and the rear part of the first slide plate are in a separated state; A coil winder slidably mounted on the propulsion beam and located behind the drilling assembly, reciprocally slidable along the first direction together with the drilling assembly, and its sliding speed is half of that of the drilling assembly; A first rubber hose, one end of which is connected to the drilling assembly, the other end is fixed on the propulsion beam, and it bypasses the coil winder in the middle and remains in a tensioned state when the drilling assembly and the coil winder slide along the first direction; On the propulsion beam, there is a first chain for driving the drilling assembly to slide along the first direction and a second chain extending along the first direction. A part of the first chain is combined with the front part of the first slide plate. A follower gear that can mesh with both and move synchronously with the coil winder is arranged in the gap between the first chain and the second chain. The follower gear is mounted on the second slide plate and drives the second slide plate to move synchronously. The coil winder is slidably mounted on the second slide plate and reciprocally slidable along the second direction together with the drilling assembly. The grouting assembly includes a lifting frame for moving the grouting pipe to switch between the second working position and the second standby position. 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.

2. The operating arm of the bolter according to claim 1, wherein When the drilling assembly is preparing for work, the follower gear always meshes only with the first chain. At the initial stage of the drilling assembly sliding along the first direction, the coil winder is driven by the drilling assembly through the first rubber hose, causing the follower gear to mesh with the second chain.

3. The operating arm of the bolt rig according to claim 1, wherein, The first chain is a circular closed chain, and a driving gear that meshes with the first chain to drive its circular rotation is provided at the end of the propulsion beam. The coiler is disposed above the driving gear through a second mounting base provided on the second slide plate.

4. The operating arm of the rock bolt jumbo according to claim 1, characterized in that, When the drilling assembly is ready to drill, the first slide plate and the second slide plate are abutted against each other.

5. The operating arm of the bolter according to claim 1, characterized in that, A first mounting base and a second mounting base that can reciprocally slide along the second direction are respectively provided on the first slide plate and the second slide plate. The drilling assembly and the coiler are respectively mounted and fixed on the first mounting base and the second mounting base. A coupling member extending toward the second mounting base is provided at the tail of the first mounting base, and a coupling groove that cooperates with the coupling member is provided on the second mounting base.

Images