The operating arm of a bolter with a rod bracket

Abstract

The present application discloses an operating arm of a bolt rig, which includes a propulsion beam, a first slide plate, a drilling assembly and a rod bracket. 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, and has a first working position for preparing to drill the rock wall and a first standby position for avoiding the grouting pipe; the rod bracket is used to support the drill pipe, and a linkage assembly with a clutch device is arranged between the rod bracket and the drilling assembly, which can move along the second direction with the drilling assembly; when the drilling assembly slides along the first direction with the first slide plate, the clutch device disengages and the rod bracket remains stationary; when the drilling assembly slides along the second direction, the clutch device engages and the rod bracket slides synchronously. Keep the drill pipe always fixed by at least two support points and in a horizontal straight state, and extend the service life.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel construction, and specifically to an operating arm of a rock bolt jumbo with a rod bracket. Background Art

[0002] A rock bolt jumbo is an integrated movable vehicle equipment for rock bolt grouting support. At present, in order to improve the modern operation level and operation efficiency, the rock bolt jumbo 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. In the prior art, in order to improve the drilling accuracy and safety, especially for a relatively long operating arm (for example, with a length of more than 3 meters), a corresponding mechanism for clamping or supporting the drill rod will be added.

[0003] For example, the Chinese patent document with the publication number CN 207905707 U discloses a support-type drill arm propulsion mechanism. A support arm for clamping the drill rod is fixedly arranged on the side of the middle part of the propulsion beam. The drill rod is drilled in different directions through a rotation driving device, reducing the vibration of the drill rod during drilling, effectively protecting the drill rod, and improving the use safety. However, the support arm is fixedly connected to the propulsion mechanism and cannot move synchronously with the drilling component, and is not suitable for the current mainstream integrated drilling and grouting operating arm.

[0004] Moreover, in most of the existing integrated drilling and grouting operating arms, the operating arm is relatively short, and generally only a front fiber guiding mechanism is provided to realize clamping at both ends. During the grouting operation, the fiber guiding mechanism is opened, and the drill rod directly moves laterally with the drilling component. However, at this time, the drill rod is only fixed to the drilling component at one end, and there is a bending stress at the other end under the influence of gravity, affecting the connection port between the drilling component and the drill rod and the structural strength of the drill rod, reducing the service life, and requiring frequent replacement and maintenance. Seriously, during drilling, the drill rod may bend or break. Summary of the Invention

[0005] The present application provides an operating arm of a rock bolt jumbo with a rod bracket, which improves the service life of the drill rod and makes the drilling operation more stable.

[0006] A propulsion beam extending along a first direction;

[0007] A first slide plate slidably mounted on the propulsion beam and reciprocally slidable along the first direction;

[0008] A drilling component including a drill rod for drilling on a rock wall, slidably mounted on the first slide plate and reciprocally slidable along a second direction, having a first working position for preparing to drill on the rock wall and a first standby position for avoidance; the second direction is perpendicular to the first direction;

[0009] The rod bracket is used to support the drill pipe. A linkage assembly with a clutch device is arranged between the rod bracket and the drilling assembly, and it can move along the second direction with the drilling assembly; when the drilling assembly slides along the first direction with the first slide plate, the clutch device disengages, and the rod bracket remains stationary; when the drilling assembly slides along the second direction, the clutch device engages, and the rod bracket slides synchronously.

[0010] The following also provides several optional ways, but it is not an additional limitation to the above overall solution, but only a further supplement or preference. Without technical or logical contradictions, each optional way can be combined with the above overall solution separately, or multiple optional ways can be combined with each other.

[0011] Optionally, the clutch device includes a first engaging member and a second engaging member that cooperate with each other. The first engaging member is linked with the drilling assembly, and the second engaging member is linked with one of the components in the linkage assembly; when the drilling assembly slides along the first direction with the first slide plate, the two engaging members disengage, and when the drilling assembly slides along the second direction, the two engaging members engage.

[0012] Optionally, the first engaging member and the second engaging member have two opposite side surfaces. One side surface is provided with a card slot with an opening, and the other side surface is provided with a card block that can enter the card slot from the opening. When the drilling assembly slides along the first direction with the first slide plate, the card block disengages from the opening of the card slot.

[0013] Optionally, the linkage assembly includes a first rack and a second rack that are respectively linked with the drilling assembly and the rod bracket, and a transmission rod fixed on the propulsion beam with a first gear ring and a second gear ring respectively arranged at both ends. The first gear ring and the second gear ring are respectively meshed with the first rack and the second rack, and the second engaging member is fixedly connected with the first rack.

[0014] Optionally, the linkage assembly includes a locking device for preventing the rod bracket from shifting when the drilling assembly slides along the first direction.

[0015] Optionally, the clutch device includes a first engaging member and a second engaging member that cooperate with each other. The first engaging member is fixed to the drilling assembly, and the second engaging member is one of the components of the linkage assembly;

[0016] The locking device includes a bolt slidably mounted on the second engaging member, an elastic reset member acting on the bolt, and a bolt hole arranged on the propulsion beam and cooperating with the bolt. When the drilling assembly slides along the first direction, the two engaging members disengage, the bolt withdraws from the bolt hole, and when the drilling assembly slides along the second direction, the two engaging members engage, and the bolt inserts into the bolt hole.

[0017] Optionally, a trigger is provided on the second engaging member and connected to the bolt through a lever mechanism, and the first engaging member has an inclined surface for pressing the trigger to unlock the locking device.

[0018] Optionally, the clutch device includes a first engaging member and a second engaging member that cooperate with each other. The first engaging member is fixed to the drilling assembly, and the second engaging member is one of the components of the linkage assembly.

[0019] The locking device includes a movable pin slidably mounted on the second engaging member and an elastic member acting on the movable pin. One end of the movable pin is an unlocking end for abutting against the first engaging member to trigger unlocking, and the other end is a locking end provided with an insertion block. Correspondingly, a slot for cooperating with the insertion block is provided on the pushing beam.

[0020] Optionally, it includes a grouting assembly installed on the first sliding plate and working alternately with the drilling assembly. The grouting assembly includes a grouting pipe movable relative to the first sliding plate. The grouting pipe has a second working position for butting against the bolt for grouting operation and a second standby position for avoiding the drilling assembly.

[0021] Optionally, the first sliding 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.

[0022] The drilling assembly is slidably mounted on the rear part of the first sliding plate. When the drilling assembly is in the first working position, the front part and the rear part of the first sliding plate are in the combined state; the grouting assembly is installed on the front part of the first sliding plate. When the grouting pipe is in the second working position, the front part and the rear part of the first sliding plate are in the separated state.

[0023] For the operating arm of the bolt trolley in this application, the linkage assembly therein can achieve the synchronous movement of the rod bracket and the drilling assembly, always keeping the drill rod supported and fixed by at least two points, and not being affected by bending stress, thus extending the service life of the drill rod and the drilling assembly. Description of the Drawings

[0024] Figure 1 It is a perspective view of the operating arm of the bolt trolley according to an embodiment of this application;

[0025] Figure 2 It is a schematic structural diagram of the bolt used in the operating arm of the bolt trolley of this application;

[0026] Figure 3 It is a partial exploded view at the drilling assembly in the operating arm of the bolt trolley of this application;

[0027] Figure 4Stereogram of the first slide when the front and middle parts and the rear part of the operating arm of the bolt rig of the present application are combined with each other and the drilling assembly is in the first working position;

[0028] Figure 5 Stereogram of the first slide when the front and middle parts and the rear part of the operating arm of the bolt rig of the present application are separated and the drilling assembly is in the first standby position;

[0029] Figure 6 Schematic diagram of the grouting assembly in the second working position of the operating arm of the bolt rig of the present application;

[0030] Figure 7 Schematic diagram of the grouting assembly in the second standby position of the operating arm of the bolt rig of the present application;

[0031] Figure 8 Schematic diagram of the first chain structure in the operating arm of the bolt rig of the present application;

[0032] Figure 9 For Figure 8 Another state schematic diagram;

[0033] Figure 10 For Figure 8 Enlarged view of part A in

[0034] Figure 11 Stereogram of the partial structure of the grouting pipe in the operating arm of the bolt rig of the present application;

[0035] Figure 12 For Figure 11 Cross-sectional view;

[0036] Figure 13 For Figure 12 Another state schematic diagram;

[0037] Figure 14 For Figure 12 Enlarged view of part B in

[0038] Figure 15 Stereogram of the clamping state of the rod bracket in the operating arm of the bolt rig of the present application;

[0039] Figure 16 For Figure 15 Another state schematic diagram;

[0040] Figure 17 Stereogram of the partial structure of the synchronous displacement of the rod bracket in the operating arm of the bolt rig of an embodiment;

[0041] Figure 18 Stereogram of the partial structure of the synchronous displacement of the rod bracket in the operating arm of the bolt rig of another embodiment;

[0042] Figure 19It is a structural sectional view of the first rack in the operating arm of the bolt trolley of this application;

[0043] Figure 20 It is Figure 19 Another state schematic diagram of;

[0044] Figure 21 It is a structural sectional view of the second rack in the operating arm of the bolt trolley of this application;

[0045] Figure 22 It is Figure 21 Another state schematic diagram of;

[0046] Figure 23 It is Figure 17 An enlarged view of the separated state of the clutch device at part C in;

[0047] Figure 24 It is Figure 23 A schematic diagram of the locked state of the locking device in;

[0048] Figure 25 It is Figure 23 A schematic diagram of the combined state of the clutch device in;

[0049] Figure 26 It is Figure 25 A schematic diagram of the unlocked state of the locking device in;

[0050] Figure 27 It is Figure 25 Another perspective schematic diagram;

[0051] Figure 28 It is Figure 23 Another perspective schematic diagram;

[0052] Figure 29 It is Figure 18 An enlarged view of part D in;

[0053] Figure 30 It is Figure 29 Another state schematic diagram of;

[0054] Figure 31 It is Figure 29 A sectional view of the clutch device in;

[0055] Figure 32 It is Figure 30 A sectional view of the clutch device in;

[0056] Figure 33 It is Figure 29 A schematic diagram of the lateral displacement of the first engaging member and the second engaging member in.

[0057] The explanations of the reference numerals in the figure are as follows:

[0058] 1. Pushing beam; 11. First chain; 12. Driving sprocket; 13. Driven sprocket; 14. Fiber supporting mechanism;

[0059] 21. First slide plate; 211. Front part;

[0060] 212. Rear part; 2121. Rear base; 2122. Rear slide plate; 2123. Guide rail; 2124. Oil cylinder;

[0061] 22. Drilling assembly;

[0062] 23. Locking mechanism; 231. Connecting rod; 232. Connecting hole;

[0063] 3. Grouting assembly;

[0064] 31. Grouting pipe; 311. Fixed seat; 312. Feed inlet; 313. Discharge outlet;

[0065] 314. Nut sleeve; 3141. Limiting protrusion; 3142. Through hole; 3143. Tapered part;

[0066] 315. Anti-collision nozzle; 3151. Conical barrel part; 3152. Straight barrel part; 3153. Avoidance groove;

[0067] 316. Buffer spring;

[0068] 32. Lifting frame; 321. First support rod; 322. Second support rod; 323. Driving device; 324. Bevel gear set;

[0069] 33. Power device; 331. Motor; 332. Bush; 333. Bearing;

[0070] 4. Rod bracket;

[0071] 5. Linkage assembly;

[0072] 51. Clutch device; 511. First engaging part; 5111. Card slot;

[0073] 512. Second engaging part; 5121. Block; 5122. Annular boss;

[0074] 521. First rack; 522. Second rack; 523. First gear ring; 524. Second gear ring; 525. Transmission rod;

[0075] 526. Slide rail seat;

[0076] 53. Locking device; 531. Bolt; 532. Elastic reset part; 533. Bolt hole; 534. Trigger part;

[0077] 535. Rotating pin; 536. First connecting plate; 537. Second connecting plate; 538. Insert block; 539. Slot;

[0078] 540. Side shifting device;

[0079] 551. Movable pin, 552. Elastic member;

[0080] 6. Drill pipe; 7. Anchor rod; 71. Nut; 72. Base plate; 73. Rod body;

[0081] 8. Anchor rod storage. Specific implementation manner

[0082] 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.

[0083] 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.

[0084] 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 in this specification 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.

[0085] 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 indicating 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.

[0086] Such as Figure 2As shown, the rock bolt 7 generally includes a hollow rod body 73, as well as a nut 71 and a backing plate 72 sleeved on the rod body 73. An anchoring head (not shown in the figure) is also provided at the distal end of the rod body 73. Its installation process requires pre-drilling a hole in the rock wall, then sending the rock bolt into the rock bolt installation hole, and after installation, rotating the nut 71 to lock the rock bolt 7. In order to achieve anchoring, it is also necessary to grout into the hole through the rock bolt, and the grout can use existing materials, which will not be elaborated here.

[0087] As Figures 1 to 8 shown, the present application provides an operating arm of a rock bolt trolley, including a propulsion beam 1, a drilling assembly 22, and a rod bracket 4. The drilling assembly 22 is inserted and fixed with a drill rod 6 for drilling a rock bolt installation hole in the rock wall, and the rod bracket 4 is used to provide support for the drill rod 6.

[0088] 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 achieve relative fixation between the operating arm and the rock wall, facilitating the operation of the equipment installed on its upper part, such as the drilling operation of the drilling assembly 22.

[0089] The first slide 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 a slideway are provided between the two, and the first slide plate 21 can slide along the first direction accordingly.

[0090] The drilling assembly 22 includes a drill rod 6 for drilling a rock bolt installation hole in the rock wall, and it can use an existing rock drill. The drilling assembly 22 is slidably installed on the first slide plate 21, and the sliding direction is the second direction not in the same direction as the first direction, and has:

[0091] The first working position, at this time, the drilling assembly 22 is at the rear end of the propulsion beam 1, and the axis line 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.

[0092] The first standby position, after the drilling assembly 22 finishes drilling, 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 shift synchronously to avoid the space for the grouting pipe 31 to work, facilitating subsequent grouting operations.

[0093] As Figures 15 to 28 shown, the rod bracket 4 is fixedly connected to the propulsion beam 1. The rod bracket 4 for supporting the drill rod 6 is provided with a rotating mechanism itself, which can rotate to leave a space for avoiding the continuous sliding of the drilling assembly 22 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 itself to avoid the drilling assembly 22, so that the drilling assembly 22 can continue to slide to complete subsequent drilling operations.

[0094] A linkage assembly 5 with a clutch device 51 is provided between the rod bracket 4 and the drilling assembly 22 to achieve the fixed or sliding state of the rod bracket 4 relative to the propulsion beam 1.

[0095] The rod bracket 4 can move synchronously with the drilling assembly 22 along the second direction, and the two have:

[0096] Combined state: The drilling assembly 22 slides along the first direction with the first slide plate 21, the clutch device 51 disengages, the linkage assembly 5 does not work, and the rod bracket 4 is fixed relative to the propulsion beam 1;

[0097] Separate state: The drilling assembly 22 slides along the second direction, the clutch device 51 engages, the linkage assembly 5 works, and 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 affected by bending stress. Compared with the traditional structure that relies on the deformation of the drill pipe itself to achieve deflection, the drill pipe 6 in the operating arm of the present application always maintains the same axis as the drilling assembly 22, is not affected by bending stress, extends the service life of the drill pipe 6 and the drilling assembly 22, and improves the safety of drilling operations.

[0098] In one embodiment, when in the first working position, a fiber supporting mechanism 14 for clamping the front end of the drill pipe 6 or the 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 of the drill pipe 6, compared with the traditional structure that only supports the drill pipe at the front end and the rear end, it avoids the bending and even fracture of the longer drill pipe 6 during drilling, and improves the safety of drilling operations.

[0099] 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 has:

[0100] Movable state: The clutch device 51 engages, and the rod bracket 4 and the drilling assembly 22 can slide synchronously;

[0101] In the fixed state, the clutch device 51 is separated, 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 principle is: 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 6 is always kept free from bending stress.

[0102] 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:

[0103] 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.

[0104] 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.

[0105] In one embodiment, the locking device 53 includes a latch 531 slidably mounted on the second engaging member 512, an elastic reset member 532 acting on the latch 531, and a latch hole 533 provided on the propulsion beam 1 and cooperating with the latch 531. When the drilling assembly 22 slides in the first direction, the two engaging members are separated, and the latch 531 is inserted into the latch hole 533. When the drilling assembly 22 slides in the second direction, the two engaging members are engaged, and the latch 531 withdraws from the latch hole 533. Generally, a unlocking member for driving the latch 531 to insert / withdraw from the latch 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 switching between the locked state and the unlocked state of the locking device 53 to cooperate with the operation of the drilling assembly 22 and the synchronous sliding function of the rod bracket 4.

[0106] In one embodiment, a trigger member 534 connected to the latch 531 through 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 534 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 latch 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. The rotation of one connecting plate depends on the driving of the other connecting plate, and the unlocking or releasing of the locking device is achieved. Specifically, as Figures 23 to 26 shown:

[0107] 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 latch 531 fixed at the free end of the second connecting plate 537 moves vertically upward, and at the same time, the elastic reset member 532 is compressed. Finally, the latch 531 completely withdraws from the latch 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;

[0108] 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 vertically move downward and extend into the bolt hole 533, pulling the second connecting plate 537 to rotate clockwise around the rotating pin 535. Relying on the rotating pin 535, the first connecting plate 536 is driven to rotate clockwise until the bolt 531 completely extends into 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 as the state of the drilling assembly 22 switches, with high synchronism, always ensuring that the drill pipe 6 is not affected by bending stress. Among them, the triggering member 534 is a cylinder, and the outer surface contacts the inclined plane more smoothly, making the unlocking operation smoother.

[0109] In another embodiment, as Figure 18 , Figures 29 to 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 card slot 5111, and the first engaging member 511 has a block 5121 that cooperates with the card 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 an insertion block 538. Correspondingly, a slot 539 that cooperates with the insertion 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 seat 526. Specifically, the clutch locking method is as follows:

[0110] Unlocking, the first engaging member 511 retreats along the first direction with the drilling assembly 22 to the first working position, relying on the block 5121 to slide and insert into the card slot 5111, and abutting against the movable pin 551 to slide along the first direction until the insertion 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;

[0111] Locking, the first engaging member 511 moves forward along the first direction with the drilling assembly 22, so that the locking block 5121 exits the card slot 5111, the elastic member 552 drives the movable pin 551 to reset along the first direction, and the inserting block 538 is immediately clamped into the slot 539, so that the second engaging member 512 is relatively fixed to the slide rail seat 526, and then 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.

[0112] As Figures 1 to 8 shown, in one of the embodiments, the operating arm further includes a grouting assembly 3. The grouting assembly 3 generally includes a grouting pipe 31 that can grout into the anchor installation hole. In order to achieve a higher degree of automation, the grouting pipe 31 also has the function of docking with the anchor 7, sending the anchor 7 into the anchor installation hole and rotating the nut 71. The operating arm generally further includes an anchor storage 8 that stores and sends the anchor 7 to the grouting assembly 3, realizing the unmanned installation of the anchor 7.

[0113] As Figures 7 to 10 shown, the grouting assembly 3 includes a lifting frame 32 for moving the grouting pipe 31 to switch it 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 and approaches the propulsion beam 1 until the axis is aligned with the anchor installation hole. In the second standby position, the grouting pipe 31 rises and moves away from the propulsion beam 1, providing a space for the drilling assembly 22 to slide forward, realizing the alternating operation of the drilling assembly 22 and the grouting assembly 3.

[0114] In the second working position, the drilling assembly 22 slides to the first standby position, and the grouting pipe 31 moves close to the first slide plate 21 until its axis is aligned with the anchor installation hole. The grouting pipe 31 can dock with the anchor 7 for grouting, or directly slide to align with the anchor installation hole for grouting;

[0115] 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 in the first working position.

[0116] Combined with the position change of the drilling assembly 22, 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 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, 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, sends the anchor bolt 7 into the anchor 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.

[0117] 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 the present application, both the grouting assembly 3 and the drilling assembly 22 in the operating arm are on the propulsion beam 1, reducing the jitter impact of the grouting assembly 3 itself and the grouting assembly 3 on 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 whole machine of the 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.

[0118] 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 arranged on the front part 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 and approaches 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 where the traditional grouting assembly 3 and the drilling assembly 22 are arranged in parallel and switched by sliding, in the case where the whole machine of the drilling assembly 22 is outside the propulsion beam 1, in this embodiment, the drilling assembly 22 only needs to slide along the second direction to leave a working space for the grouting pipe 31, so that the sliding stroke along the second direction is reduced, the 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 bolt 7 or the grouting pipe 31 and the anchor bolt installation hole is improved, and the subsequent operation of conveying the anchor bolt 7 or directly grouting is facilitated.

[0119] In one embodiment, during the process of moving the grouting pipe 31, 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 is a parallelogram structure, so that the grouting pipe 31 is always kept horizontal with respect to 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 coaxiality with the bolt installation hole is maintained, facilitating the horizontal installation of the bolt 7.

[0120] When the grouting assembly 3 conveys the entire bolt 7 to the bolt installation hole and then performs grouting operations, in order to better fix the bolt 7 to the hole wall, as Figures 12 to 14 shown, in one embodiment, the grouting assembly 3 includes a fixed seat 311 rotatably fitted 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 screwing the nut 71 to lock the bolt 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 for cooperating 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 for abutting against the nut 71. The shape of the front section adapts to the outer shape structures of most nuts, such as a regular hexagon. When the bolt 7 is inserted into the grouting pipe 31, relative circumferential fixation with the grouting pipe 31 is achieved by relying on the nut 71 and the nut sleeve 314, and they can rotate synchronously. After the entire bolt 7 is conveyed into the bolt 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 bolt 7 expands and fixes to 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 bolts 7 of different lengths.

[0121] In one embodiment, at the discharge port 313 of the grouting pipe 31, there is an anti-collision nozzle 315 that axially protrudes from its end and is slidable. 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 delivery 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 and gradually inclines outward from the end of the straight tube portion 3152 close to the rock wall, which facilitates the assembly of the nut sleeve 314 and serves as a guiding function 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 prevent 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.

[0122] 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 facilitates assembly.

[0123] In one embodiment, the through hole 3142 is provided with a conical portion 3143 having 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 fit between the nut 71 and the nut sleeve 314.

[0124] Please refer to again Figure 13 , in one embodiment, the power device 33 includes a motor 331 and a sleeve 332 sleeved outside the grouting pipe 31. A bevel gear set 324 is arranged between the sleeve 332 and the output shaft of the motor 331, and a bearing 333 is arranged between the sleeve 332 and the fixed seat 311. Among them, the sleeve 332 and the grouting pipe 31 are connected by a pin 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 sleeve 332, making the rotation of the sleeve 332 smoother.

[0125] 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. Generally, a locking mechanism 23 is 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:

[0126] In the combined state, the locking mechanism 23 is locked, and the two parts are relatively fixed and slide synchronously.

[0127] In the separated state, the locking mechanism 23 is unlocked, and the two parts are separated. At least one of them can slide. There is also a first driving mechanism for driving the drilling assembly 22 to slide 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. There is also a guide rail 2123 for sliding guidance between them, and an oil cylinder 2124 for driving the rear slide plate 2122 to slide reciprocally.

[0128] The operating arm of the bolt rig in this embodiment improves the drilling assembly 22 and the grouting assembly 3 to be arranged front and rear. The plate for the drilling assembly 22 to slide is an integral plate and is only for the drilling assembly 22 to slide alone. Compared with the traditional arrangement where the drilling assembly 22 and the grouting assembly 3 are arranged vertically and parallel to the first direction and must rely on the structure of 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.

[0129] 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.

[0130] The locking mechanism 23 that plays the role of combination and separation has a specific structure as Figures 3 to 6 shown. In one embodiment, one of the front part 211 and the rear part 212 of the first slide plate 21 is provided with a combination rod 231 extending along the second direction, and the other is provided with a combination hole 232 cooperating with the combination rod 231. For example, the combination rod 231 protrudes along the second direction at the front part of the rear part 212 and has the same sliding direction as the drilling assembly 22. When the drilling assembly 22 is in the first working position, the combination rod 231 is inserted into the combination hole 232. On the contrary, when the drilling assembly 22 is in the first standby position, the combination rod 231 withdraws from the combination hole 232. Therefore, the switching of the drilling assembly 22 between the first working position and the first standby position can achieve combination and separation without redundant unlocking parts, and the structure is simple, completing the combination / separation of the grouting assembly 3 and the drilling assembly 22.

[0131] As Figures 9 to 11As shown, in one embodiment, a driving mechanism for driving the front portion 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 portion 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 provided at the rear end and the front end of the propulsion beam 1, which tightly mesh and connect the first chain 11 to form 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 anchor bolts. Compared with the belt transmission mechanism, it has higher precision, a simpler structure, is easier to maintain, and is suitable for high-frequency vibration environments.

[0132] For the operating arm of the bolt trolley of the present application, a rod bracket arranged in the middle of the propulsion beam is provided with a linkage assembly with the drilling assembly, and can slide synchronously with the drilling assembly to keep the drill pipe always free from bending stress. And the chain drive makes the translation precision high and the drilling depth precision high. The linkage assembly is also provided with a clutch device, so that when the drilling assembly moves forward in the first working position, the clutch device disengages, and the corresponding locking device locks, and the rod bracket is fixed to the propulsion beam to avoid the rod bracket shifting caused by the vibration during high-frequency drilling, resulting in the drill pipe being subjected to bending stress during drilling.

[0133] 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 various embodiments involved at the same time.

[0134] The above embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed 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 the present application, several deformations and improvements can still be made, and these all belong to 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 capable of reciprocatingly sliding along the first direction; A drilling assembly including a drill rod for drilling on a rock wall, slidably mounted on the first slide plate and capable of reciprocatingly sliding along a second direction, having a first working position for preparing to drill on the rock wall and a first standby position for avoidance; the second direction is perpendicular to the first direction; A rod bracket for supporting the drill rod, and a linkage assembly with a clutch device is provided between the rod bracket and the drilling assembly, which can move along the second direction with the drilling assembly; when the drilling assembly slides along the first direction with the first slide plate, the clutch device disengages and the rod bracket remains stationary; when the drilling assembly slides along the second direction, the clutch device engages and the rod bracket slides synchronously.

2. The operating arm of the bolter according to claim 1, characterized in that, The clutch device includes a first engaging member and a second engaging member that cooperate with each other. The first engaging member is linked with the drilling assembly, and the second engaging member is linked with one of the components in the linkage assembly; when the drilling assembly slides along the first direction with the first slide plate, the two engaging members disengage, and when the drilling assembly slides along the second direction, the two engaging members engage.

3. The operating arm of the bolter according to claim 2, wherein The first engaging member and the second engaging member have two opposite side surfaces. One side surface is provided with a slot with an opening, and the other side surface is provided with a block that can enter the slot from the opening. When the drilling assembly slides along the first direction with the first slide plate, the block disengages from the opening of the slot.

4. The operating arm of the bolter according to claim 2, characterized in that, The linkage assembly includes a first rack and a second rack respectively linked with the drilling assembly and the rod bracket, and a transmission rod fixed on the propulsion beam and provided with a first gear ring and a second gear ring at both ends respectively. The first gear ring and the second gear ring are respectively meshed with the first rack and the second rack, and the second engaging member is fixedly connected with the first rack.

5. The operating arm of the rock bolt jumbo according to claim 1, characterized in that, The linkage assembly includes a locking device for preventing the rod bracket from shifting when the drilling assembly slides along the first direction.

6. The operating arm of the bolter according to claim 5, characterized in that, The clutch device includes a first engaging member and a second engaging member that cooperate with each other. The first engaging member is fixed to the drilling assembly, and the second engaging member is one of the components of the linkage assembly; The locking device includes a pin slidably mounted on the second engaging member, an elastic reset member acting on the pin, and a pin hole provided on the propulsion beam and cooperating with the pin. When the drilling assembly slides along the first direction, the two engaging members disengage, the pin withdraws from the pin hole, and when the drilling assembly slides along the second direction, the two engaging members engage, and the pin inserts into the pin hole.

7. The operating arm of the rock bolter according to claim 6, characterized in that, A trigger member connected to the pin through a lever mechanism is provided on the second engaging member, and the first engaging member has an inclined surface for pressing the trigger member to unlock the locking device.

8. The operating arm of the bolter according to claim 5, characterized in that, The clutch device includes a first engaging member and a second engaging member that cooperate with each other. The first engaging member is fixed to the drilling assembly, and the second engaging member is one of the components of the linkage assembly; The locking device includes a movable pin slidably mounted on the second engaging member and an elastic member acting on the movable pin. One end of the movable pin is an unlocking end that abuts against the first engaging member to trigger unlocking, and the other end is a locking end provided with a plug block. Correspondingly, a slot cooperating with the plug block is provided on the pushing beam.

9. The operating arm of the rock bolter according to claim 1, characterized in that, It includes a grouting component installed on the first sliding plate and working alternately with the drilling component. The grouting component includes a grouting pipe movable relative to the first sliding plate. The grouting pipe has a second working position for grouting the anchor rod and a second standby position for avoiding the drilling component.

10. The operating arm of the rock bolt jumbo according to claim 9, characterized in that, The first sliding plate is divided into a front part and a rear part along the first direction. There is a combined state of synchronous sliding and a separated state of independent sliding between the front part and the rear part. The drilling component is slidably mounted on the rear part of the first sliding plate. When the drilling component is in the first working position, the front part and the rear part of the first sliding plate are in a combined state. The grouting component is installed on the front part of the first sliding plate. When the grouting pipe is in the second working position, the front part and the rear part of the first sliding plate are in a separated state.

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