CN111706370A - Hydraulic anchor rod drill carriage and three-station push beam thereof - Google Patents

Abstract

The invention discloses a hydraulic anchor rod drill carriage and a three-station push beam thereof, which comprise a fixed beam, a rotating beam, a drilling device, an anchor rod device and an anchoring device, wherein the rotating beam comprises a push rod, a sleeve and a plurality of connecting pieces; in the drilling operation, the anchoring operation, the anchor rod operation and the rotation process of the rotating beam, the top end of the fixed beam always abuts against the roadway top plate to be anchored and is fixed; through the very big promotion of this technical scheme switching rate to still can ensure to switch the angle of in-process accurate and fix a position accurately, still can effectively reduce whole car cost simultaneously, be favorable to the mechanized further popularization of strutting in the pit.

Description

Hydraulic anchor rod drill carriage and three-station push beam thereof

Technical Field

The invention relates to the technical field of mine and tunnel engineering machinery, in particular to a hydraulic anchor rod drill carriage and a three-station push beam thereof.

Background

The underground support (roadway support) is mainly used for easing and reducing the movement of surrounding rocks, so that the section of a roadway is not excessively reduced, and scattered and damaged surrounding rocks are prevented from falling; generally, in order to make the roadway support play a positive role in regulating and controlling the deformation of the surrounding rock, the support should be installed before the surrounding rock is loosened and damaged, so that the support and the surrounding rock play a bearing role together under the condition that the surrounding rock still keeps self-bearing force.

Taking anchor bolt support as an example; drilling an anchor rod hole firstly in the process of anchor rod supporting, and then knocking in an anchor rod; in the early stage of anchor rod support, an air-leg rock drill is often adopted to manually drill holes, and then an anchor rod is manually installed; the scheme has the advantages of high working strength, low operating efficiency, low supporting quality and low safety factor; therefore, the anchor rod drill carriage can be quickly replaced by the double-drill-arm anchor rod drill carriage, when the double-drill-arm anchor rod drill carriage works, a drill arm is used for drilling, and the anchor rod is installed on the other drill arm; the technical problems of low initial safety factor and the like are solved; however, because the scheme needs two sets of drill boom operating devices, the operation is complex, and the two drill booms are independent from each other, the hole alignment is difficult in the process of installing the anchor rod by the other drill boom after the drilling is finished; namely, the technical problems of high initial working strength, low working efficiency, low support quality and the like still exist.

The existing anchor support usually adopts a single drill boom anchor rod drill carriage, namely, a push beam pushes a sliding plate to be respectively provided with a drill hole and an anchor rod rock drill, and the sliding plate is translated to switch the drill/anchor rock drill to drill the hole and install the anchor rod; or only one rock drill is installed, and the purposes of drilling and installing the anchor rod are achieved by switching the drill rod and the anchor rod; the hydraulic anchor rod trolley disclosed in the Chinese patent publication No. CN209539352U achieves the purposes of drilling and installing anchor rods by switching drill rods and anchor rods;

they have the following disadvantages:

1) although the drilling and anchoring switching speed is improved to a certain extent compared with the original anchor rod supporting scheme, the method still has a room for improvement;

2) for the anchor rod drill carriage adopting the double rock drills, two sets of propelling devices are usually adopted, so that a propelling beam is heavy and complex to operate.

Therefore, chinese patent publication No. CN110761816A discloses an automatic jumbolter mechanism, belonging to the technical field of drill mechanisms; the drilling and anchoring device comprises a fixed seat, a rotating frame which is hinged with the fixed seat and is provided with a drilling and anchoring kit, and a propelling part for driving the drilling and anchoring kit to move forwards and backwards; the rotating frame is driven to rotate by the driving part. The drilling anchor kit on the rotating frame comprises a drill rod, an anchoring agent and an anchor rod. The drilling machine mechanism is provided with the rotating frame, the drill rod, the anchoring agent and the anchor rod are arranged at different positions of the rotating frame, the positioning before the construction of the drill rod, the anchoring agent and the anchor rod is realized through the rotation of the rotating frame, the three processes of drilling the drill rod, drilling the anchoring agent and drilling the anchor rod are changed into one process, and the whole process of drilling the drill rod, drilling the anchoring agent and drilling the anchor rod is realized through automatic control. The drilling machine mechanism only needs one propelling device and can realize the accurate positioning action of the drill rod, the anchoring agent and the anchor rod by one-time positioning.

Although the patent document solves the above technical problems, the technical personnel in the field find that the prior art still has deficiencies in the using process; theoretically, after the drilling mechanism is positioned once, the subsequent bolting operation and anchoring operation do not need to be positioned again as long as the rotary frame rotates by a specific angle, but the subsequent bolting operation and anchoring operation are not required to be positioned again in the actual operation process, for example, the whole drilling mechanism is in a vibration state during the drilling operation, and obviously, the drilling machine generates a certain displacement, so that a certain deviation exists after the subsequent rotary frame rotates by the specific angle, and in addition, how to ensure that the rotary frame rotates by the specific angle and the rotation angle error is small enough is not mentioned in the patent documents.

Disclosure of Invention

In order to solve the technical problems, the present invention aims to overcome the shortcomings of the prior art, and provide a hydraulic anchor rod drill carriage and a three-position push beam thereof, wherein the push beam comprises a drilling position, an anchor rod position and an anchoring position which are switched by rotation, so that the switching speed is greatly improved, and the angle accuracy and the positioning accuracy in the switching process can be ensured.

In order to achieve the purpose, the invention adopts the following technical scheme:

a three-station push beam comprises a support arranged on a working arm and a rotating beam arranged on the support, wherein a drilling device for completing drilling operation, an anchor rod device for completing anchor rod operation and an anchoring device for completing anchoring operation are arranged on the rotating beam;

the three-station push beam also comprises a fixed beam fixedly arranged on the support, the rotating beam comprises a push rod, a sleeve and a plurality of connecting pieces, the sleeve and the push rod are distributed in parallel and are fixedly connected through the connecting pieces, the sleeve is sleeved on the fixed beam and can rotate relative to the fixed beam, the anchoring device, the drilling device and the anchor rod device are all arranged on the sleeve, the drilling device and the anchor rod device are respectively positioned on two sides of the anchoring device, and the push rod is driven by the switching oil cylinder to rotate by taking the fixed beam as a central shaft; so that the drilling device is positioned at a drillable position during drilling operation, the anchoring device is positioned at an anchorable position during anchoring operation, and the anchor rod device is positioned at an anchorable position during anchoring operation;

and in the drilling operation, the anchoring operation, the anchor rod operation and the rotating process of the rotating beam, the top end of the fixed beam always abuts against the roadway top plate to be anchored and is fixed.

Preferably, the top end of the fixed beam is provided with a top disc, and a plurality of protruding parts are distributed on the upper surface of the top disc, so that the fixed beam can stably lean against a roadway top plate needing anchoring.

Preferably, when the push rod rotates to the maximum rotatable position from the initial position, the angle of rotation of the push rod relative to the axis of the fixed beam does not exceed 135 degrees.

Preferably, the drilling device is further provided with a limiting oil cylinder, an anchoring limiting block and an anchoring limiting base, the anchoring limiting base is installed on the fixed beam or the support, the anchoring limiting block is fixedly installed on the sleeve, in the process that the switching oil cylinder drives the rotating beam to rotate anticlockwise, the drilling device, the anchoring device and the anchor rod device are sequentially located at the drilling position, the anchoring position and the anchor rod position, the limiting oil cylinder drives the anchoring limiting base to move to be abutted against the anchoring limiting block to enable the anchoring device to be located at the anchoring position, in the process that the switching oil cylinder drives the rotating beam to rotate clockwise, the drilling device and the anchor rod device are sequentially located at the drilling position and the anchor rod position, and the anchoring limiting base is not abutted against the anchoring limiting block.

Preferably, the anchoring limiting base is rotatably arranged on the fixed beam or the support, and the limiting oil cylinder is hinged with the anchoring limiting base.

Preferably, the drilling device comprises a drilling guide rail, a drilling rock drill and a drilling propulsion device, the drilling guide rail is arranged along the axial direction of the sleeve and is fixedly arranged on the sleeve, the drilling propulsion device can select an oil cylinder or a motor, and the drilling propulsion device pushes the drilling rock drill to move along the drilling guide rail so as to complete the drilling operation;

the anchoring device comprises an anchoring assembly for inputting the anchoring agent and pushing the anchoring agent to move, a guide pipe for conveying the anchoring agent, an anchoring guide rail and an anchoring propulsion device for propelling the guide pipe to move back and forth along the anchoring guide rail, the anchoring guide rail is arranged along the axial direction of the sleeve and is fixedly arranged on the sleeve, the anchoring propulsion device comprises a sliding block and a propulsion piece, the sliding block is slidably arranged on the anchoring guide rail, the guide pipe is fixedly connected with the sliding block and is detachably connected with the anchoring assembly, and the propulsion piece propels the sliding block to move back and forth on the anchoring guide rail to finish anchoring operation;

the anchor rod device comprises an anchor rod guide rail, an anchor rod rock drill and an anchor rod propelling device, the anchor rod guide rail is arranged along the axial direction of the sleeve and is fixedly installed on the sleeve, the anchor rod propelling device can select an oil cylinder or a motor, and the anchor rod propelling device pushes the anchor rod rock drill to move along the anchor rod guide rail so as to complete anchor rod operation;

wherein, drilling guide rail and stock guide rail are located the both sides of anchor guide rail respectively.

Preferably, the anchor rod rock drill and the drilling rock drill jointly adopt a propulsion oil cylinder to complete propulsion and retraction; the interlocking oil cylinder drives the limiting interlocking device to move to one side of the anchor rod rock drill so as to fix the anchor rod rock drill, and the propulsion oil cylinder drives the drilling rock drill to complete drilling operation; when the anchor rod rock drill is located at the anchor rod position, the interlocking oil cylinder drives the limiting interlocking device to move to one side of the drilling rock drill so that the drilling rock drill is fixed, and the propulsion oil cylinder drives the anchor rod rock drill to complete anchor rod operation.

Preferably, the sleeve is further provided with an upper pulley block, a lower pulley block, a movable pulley block, a pull-back steel wire rope and a push steel wire rope, the upper pulley block is fixed at the upper end of the sleeve, the lower pulley block is fixed at the lower end of the sleeve, the movable pulley block is installed at the middle section of the sleeve and is pushed by the push oil cylinder to enable the movable pulley block to move up and down along the axial direction of the sleeve, one end of the pull-back steel wire rope is fixed on the drilling rock drill and sequentially bypasses one pulley in the lower pulley block, one pulley in the movable pulley block and the other pulley in the lower pulley block, and the other end of the pull-back; one end of the propelling steel wire rope is fixed on the drilling rock drill and sequentially bypasses under one pulley in the upper pulley block, the other pulley in the movable pulley block and the other pulley in the upper pulley block, and the other end of the propelling steel wire rope is fixed on the anchor rod rock drill;

one end of the pull-back steel wire rope is fixed at a position A on the drilling rock drill, and the other end of the pull-back steel wire rope is fixed at a position B on the anchor rod rock drill, wherein the position A and the position B are both positioned above the lower pulley block;

and one end of the propelling steel wire rope is fixed at a position C on the drilling rock drill, the other end of the propelling steel wire rope is fixed at a position D on the anchor rod rock drill, and the position C and the position D are both positioned below the upper pulley block.

Preferably, the anchoring assembly comprises a tee joint, a first valve is arranged at a first outlet end of the tee joint, a second valve is arranged at a second outlet end of the tee joint, a first guide pipe detachably connected with the guide pipe is connected with a third outlet end of the tee joint, the first outlet end of the tee joint is connected with a second guide pipe used for inputting the anchoring agent, and the second outlet end of the tee joint is connected with a third guide pipe used for inputting water.

A hydraulic rock bolt drill rig comprising a three-position feed beam as described above.

The invention has the beneficial effects that:

1) the purpose that the drilling anchor switches is reached through the rotation of live-beams, compare in original further promotion that switches the drilling anchor through the translation slip the speed that the anchor switches, and at rotatory in-process, the top of fixed beam is leaned on all the time and is fixed on the tunnel roof that needs the anchor, the accuracy that the drilling anchor switches has been guaranteed, avoided rotatory switching in-process because whole car removes or the working arm removes or the propelling beam removes and leads to the unable accurate centre bore of aiming at fast after the anchor switches, and then make the rock drilling anchoring process more continuous, high production efficiency, economic benefits is better.

2) The setting through a plurality of stoppers and a plurality of spacing base has ensured at the rotatory switching in-process of propulsion roof beam, and drilling equipment accurate positioning to drilling position, and the accurate location of stock device is to stock position and the accurate location of anchor device to anchor position.

3) The anchor assembly in the anchor device has larger volume and the installation position thereof is overlapped with the installation of the pushing piece to a certain extent, namely, the installation space of the anchor assembly is difficult to provide on the propelling beam, therefore, the anchor assembly is connected with the guide pipe by the first conduit of the hose in the invention, so that the problem is solved easily, and the anchor assembly is used as a separate device, thereby not only facilitating the addition of water and resin anchoring agent to the anchor assembly, but also lightening the mass of the propelling beam and saving the installation space on the propelling beam.

Drawings

Fig. 1 is a schematic structural diagram 1 of a feed beam according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a feed beam according to a first embodiment of the present invention, shown in FIG. 2;

FIG. 3 is a schematic structural diagram of a feed beam according to an embodiment of the present invention, shown in FIG. 3;

FIG. 4 is a schematic view of a position-limiting interlock apparatus according to an embodiment of the present invention;

FIG. 5 is an exploded view of a positive lock device according to an embodiment of the present invention;

FIG. 6 is a schematic view of an oil path of a feed beam according to an embodiment of the present invention;

FIG. 7 is a diagram illustrating a rotation switch according to an embodiment of the present invention;

FIG. 8 is a schematic view of an anchoring device 1 according to an embodiment of the present invention;

FIG. 9 is a schematic view of an anchoring device according to an embodiment of the present invention 2;

FIG. 10 is a schematic view of an anchor assembly according to an embodiment of the present invention.

Description of reference numerals: 1. a support; 2. a fixed beam; 4. a drilling device; 6. an anchor rod device; 31. a push rod; 32. a sleeve; 33. a connecting member; 7. a limiting oil cylinder; 51. anchoring a limiting block; 52. anchoring a limit base; 41. a first stopper; 42. A drilling limiting base; 62. an anchor rod limiting base; 43. drilling a guide rail; 44. a drilling rock drill; 53. an anchor assembly; 54. Guiding a pipe; 55. anchoring the guide rail; 56. a slider; 57. a pusher member; 63. an anchor rod guide rail; 64. an anchor rock drill; 34. switching the oil cylinders; 8. a limiting interlocking device; 81. a propulsion cylinder; 82. interlocking oil cylinders; 20. a top tray; 35. an anchor rod bin; 350. a motor; 351. an upper rod storage disc; 352. a lower rod storage disc; 353. a central shaft; 83. an upper pulley block; 84. a lower pulley block; 85. A movable pulley block; 801. position A; 802. position B; 803. position C; 804. a position D; 86. a limiting seat; 87. a limiting block; 88. a limiting groove; 89. a limiting member; 805. a reversing valve A; 806. a reversing valve B; 531. a first outlet end; 532. a first valve; 533. a second outlet end; 534. a second valve; 58. a first conduit; 59. a guide ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the present invention, "upper", "lower", "front", "rear", "left" and "right" are based on the orientation of each component in fig. 1; wherein, the top plate on the fixed beam is positioned at the upper end.

The first embodiment is as follows:

a hydraulic anchor drill rig comprising an engineering chassis, a working arm, a three-position feed beam as shown in figures 1-3, an electrical device, a hydraulic device and a cab; the engineering chassis is used for supporting the whole vehicle, the rigidity and the strength of the whole vehicle are guaranteed, the front transverse telescopic form of supporting legs of the engineering chassis can guarantee the working stability of the whole vehicle, the electric device and the hydraulic device are used for guaranteeing the normal work of the three-station propelling beam and the working arm, and the cab is used for accommodating a driver and controlling the working arm and the three-station propelling beam by the driver to complete the underground supporting work; the three-station push beam is arranged on the working arm and is adjusted to be in a vertical state through the working arm;

in the embodiment, the three-station propelling beam comprises a bracket 1 arranged on the working arm and a rotating beam arranged on the bracket 1, wherein a drilling device 4 for completing drilling operation, an anchor rod device 6 for completing anchor rod operation and an anchoring device for completing anchoring operation are arranged on the rotating beam;

the three-station push beam further comprises a fixed beam 2 fixedly installed on the support 1, the rotating beam comprises a push rod 31, a sleeve 32 and a plurality of connecting pieces 33, the sleeve 32 and the push rod 31 are distributed in parallel and fixedly connected through the connecting pieces 33, the sleeve 32 is sleeved on the fixed beam 2 and can rotate relative to the fixed beam 2, the anchoring device, the drilling device 4 and the anchor rod device 6 are all installed on the sleeve 32, the drilling device 4 and the anchor rod device 6 are respectively located on two sides of the anchoring device, and the push rod 31 is driven by a switching oil cylinder 34 to rotate by taking the fixed beam 2 as a central shaft; thereby enabling the drilling device 4 to be in a drillable position during drilling operation, the anchoring device to be in an anchorable position during anchoring operation, and the anchor rod device 6 to be in an anchorable position during anchoring operation;

and in the drilling operation, the anchoring operation, the anchor rod operation and the rotating process of the rotating beam, the top end of the fixed beam 2 always abuts against the roadway top plate to be anchored and is fixed.

So set up, the purpose that the anchor that bores switches is reached through the rotation of live-beams, compare in original further promotion that the anchor that bores switches through translation slip the anchor speed that the anchor switches, and at rotatory in-process, the top of fixed beam 2 is leaned on all the time and is fixed on the tunnel roof that needs the anchor, the accuracy that the anchor that bores switches has been guaranteed, avoided rotatory switching in-process because whole car removes or the working arm removes or three-station propulsion beam removes and leads to changeing the unable accurate alignment centre bore fast after the anchor switches, and then make the rock drilling anchor process more continuous, high production efficiency, economic benefits is better.

In this embodiment, the top end of the fixed beam 2 is provided with a top plate 20, and a plurality of protrusions are distributed on the upper surface of the top plate 20, so that the fixed beam 2 can stably lean against a roadway roof to be anchored; preferably, the fixed beam 2 is driven by a working arm to abut against a top plate of the roadway, or the fixed beam 2 is a telescopic beam and is driven by an oil cylinder to abut against the top plate of the roadway; tilting or wobbling during drilling and bolting, as well as possible displacements during switching of the drill pipe and rock bolt drilling machines 64, is further prevented by the top plate 20.

When the push rod 31 rotates from the initial position to the maximum rotatable position, the rotating angle relative to the axis of the fixed beam 2 does not exceed 135 degrees; in this embodiment, the angle of rotation of the rotary beam from the initial position to the maximum rotatable position is between 80 and 100 degrees; the arrangement is that the rotating beam is pushed by the switching oil cylinder 34 to rotate, so that the rotating angle is difficult to reach 180 degrees, and the rotating angle is about 90 degrees optimally; in addition, a more centralized drilling device 4 and bolting device 6 also facilitates the installation of the bolt magazine 35.

In this embodiment, as shown in fig. 7, a limiting cylinder 7, an anchoring limiting block 51 and an anchoring limiting base 52 are further provided, the anchoring limiting base 52 is installed on the fixed beam 2 or the bracket 1, the anchoring limiting block 51 is fixedly installed on the sleeve 32, in the process that the piston of the switching cylinder 34 retracts from the extended state to drive the rotating beam to rotate counterclockwise, the drilling device 4, the anchoring device and the anchor rod device 6 are sequentially in the drilling position, the anchoring position and the anchor rod position, the piston of the limiting cylinder 7 extends to drive the anchoring limiting base 52 to move against the anchoring limiting block 51 so that the anchoring device is in the anchoring position, and during the process that the piston of the switching cylinder 34 is extended from the retracted state to drive the rotating beam to rotate clockwise, the drilling device 4 and the anchor rod device 6 are sequentially positioned at a drilling position and an anchor rod position, and in the process, the piston of the limiting oil cylinder 7 is always in a retraction state; this is so because, in general, the longest extended position and the fully retracted position of the piston of the switching cylinder 34 are determined, it is possible to ensure that the drilling device 4 is in the drilling position and the bolting device 6 is in the bolting position, and when the anchoring device is in the anchoring position, the piston of the switching cylinder 34 is in the intermediate position, which cannot be accurately determined, and thus the anchoring position can be accurately determined by the cooperation of the fixing stopper 87 and the anchoring stopper base 52 during rotation.

It should be noted that, in other embodiments, the drilling device 4, the anchoring device and the bolting device 6 are sequentially in the drilling position, the anchoring position and the bolting position during the process that the piston of the switching cylinder 34 is extended from the retracted state to drive the rotation beam to rotate, and the drilling device 4 and the bolting device 6 are sequentially in the drilling position and the bolting position during the process that the piston of the switching cylinder 34 is retracted from the extended state to drive the rotation beam to rotate, which is also feasible; and the retraction of the piston of the limit cylinder 7 drives the anchor limit base 52 to move against the anchor limit block 51 so that the anchor device is in the anchoring position.

It should be noted that the above two positions of the switching cylinder 34 are only two preferred ways, i.e. the drilling and/or rockbolting machines 44, 64 can also be in the drilling position when the switching cylinder 34 is in the other position.

In this embodiment, the anchoring limiting base 52 is rotatably mounted on the fixed beam 2 or the bracket 1, and the limiting cylinder 7 is hinged to the anchoring limiting base 52; in other embodiments, the anchoring limiting base 52 is slidably mounted on the fixed beam 2 or the bracket 1, and the limiting cylinder 7 is fixedly connected with the anchoring limiting base 52; in the rotating process of the rotating beam, the rotating beam stops rotating by the fact that the anchoring limiting block 51 abuts against the anchoring limiting base 52, the rotating beam is provided with the drilling, anchoring and anchor rod device 6, so that the rotating inertia of the rotating beam is large, and meanwhile in the process, the connection position of the limiting oil cylinder 7 and the anchoring limiting base 52 is a stress concentration point, so that the anchoring limiting base 52 is preferably rotatably arranged on the fixed beam 2 or the support 1, and the connection stability of the limiting oil cylinder 7 and the anchoring limiting base 52 is ensured.

In this embodiment, at least one first adjusting bolt is further provided, the first adjusting bolt is installed on the anchoring limiting block 51 or the anchoring limiting base 52, and when the anchoring limiting block 51 abuts against the anchoring limiting base 52, the rotating beam can rotate again by adjusting the first adjusting bolt. This is because even if the anchor stopper 51 or the anchor stopper base 52 is fitted, a certain relatively small deviation may still exist between the anchor device and the anchor position due to processing or the like, and this deviation can be avoided by adjusting the first adjusting bolt.

In this embodiment, a first limiting block 41, a drilling limiting base 42 and an anchor rod limiting base 62 are further provided, the drilling limiting base 42 and the anchor rod limiting base 62 are fixedly installed on the fixed beam 2 or the bracket 1, the first limiting block 41 is fixedly installed on the sleeve 32, and when the first limiting block 41 abuts against the drilling limiting base 42, the drilling device 4 is located at a drilling position; when the first limiting block 41 abuts against the anchor rod limiting base 62, the anchor rod device 6 is in the anchor rod position; further preferably, at least two second adjusting bolts are further provided, the second adjusting bolts are mounted on the first limiting block 41 or the drilling limiting base 42 or the anchor rod limiting base 62, and when the first limiting block 41 abuts against the drilling limiting base 42 or when the first limiting block 41 abuts against the anchor rod limiting base 62, the second adjusting bolts are adjusted to enable the rotating beam to rotate again.

In the present embodiment, the structure of the working arm can refer to the working arm referred to in publication nos. CN209539352U, CN210141141U, CN108868841A, CN 108756965A; generally, the working arm comprises a first big arm and a second big arm, the rear end of the first big arm is rotatably arranged on the engineering chassis, and a rear lifting swing oil cylinder is arranged to operate the first big arm to rotate; the rear end of the second big arm is fixedly connected with the first big arm, the front end of the second big arm is hinged with the support 1, and a front lifting swing oil cylinder is arranged to control the three-station push beam to rotate; therefore, the three-station push beam can be conveyed to a specified position according to a specified angle.

In the present embodiment, as shown in fig. 1-2, a bolt storage 35 for storing bolts is further provided at one side of the turning beam, and the structure of the bolt storage can refer to the bolt storage 35 referred to in the publication numbers CN209539352U, CN110173286A, CN108979688A, CN108222987A and CN 204238883U; generally, the anchor rod bin 35 includes a protective cover, a motor 350, an upper rod storage disk 351 and a lower rod storage disk 352, a central shaft 353 is connected between the upper rod storage disk 351 and the lower rod storage disk 352, grooves for accommodating drill rods or anchor rods are circumferentially formed on the upper rod storage disk 351 and the lower rod storage disk 352, and a plurality of guide wheels are circumferentially formed on the upper rod storage disk 351 and the lower rod storage disk 352 and located at one side of the grooves. The anchor rod and the drill rod are pressed tightly. The drill rod can be taken out smoothly, and the drill rod is prevented from being abraded; the motor 350 drives the upper rod storage disc 351 and the lower rod storage disc 352 to swing; and mounts the bolt to the bolt rock drill 64 during the swinging process. It is further preferred that the lower stock disc 352 be movable up and down on the central axis 353 to accommodate different length stock sizes. By the arrangement, the screw-in anchor rod bin 35 is adopted, so that the rod accommodating capacity of the anchor rod bin 35 is greatly improved, frequent installation of anchor rods is avoided, the auxiliary working time is reduced, the efficiency is improved, the structure is compact, and the labor intensity of personnel is greatly reduced; and the safety of personnel is guaranteed.

In this embodiment, the drilling device 4 includes a drilling guide rail 43, a drilling rock drill 44 and a drilling propulsion device, the drilling guide rail 43 is arranged along the axial direction of the sleeve 32 and is fixedly mounted on the sleeve 32, the drilling propulsion device can select an oil cylinder or a motor, and the drilling propulsion device propels the drilling rock drill 44 to move along the drilling guide rail 43 to complete the drilling operation;

as shown in fig. 8-9, the anchoring device comprises an anchoring assembly 53 for inputting and pushing the anchoring agent to move, a guide tube 54 for delivering the anchoring agent, an anchoring guide 55 and an anchoring propulsion device for propelling the guide tube 54 to move back and forth along the anchoring guide 55, the anchoring guide 55 is arranged along the axial direction of the sleeve 32 and is fixedly mounted on the sleeve 32, the anchoring propulsion device comprises a slide block 56 and a pushing member 57, the slide block 56 is slidably mounted on the anchoring guide 55, the guide tube 54 is fixedly connected with the slide block 56 and is detachably connected with the anchoring assembly 53, and the pushing member 57 pushes the slide block 56 to move back and forth on the anchoring guide 55 to complete the anchoring operation; this is so because the anchor assembly 53 in the anchor device has a relatively large volume and its mounting position coincides with the mounting of the pushing member 57, i.e., it is difficult to provide a space for mounting the anchor assembly 53 on the feed beam, so that in the present invention, the anchor assembly 53 is connected to the guide tube 54 by the first conduit 58 which is a flexible tube, which easily solves the problem, and the anchor assembly 53 serves as a separate device, which facilitates the addition of water and resin anchoring agent to the anchor assembly 53, reduces the mass of the feed beam, and saves space on the feed beam.

The anchor rod device 6 comprises an anchor rod guide rail 63, an anchor rod rock drill 64 and an anchor rod propelling device, wherein the anchor rod guide rail 63 is arranged along the axial direction of the sleeve 32 and is fixedly arranged on the sleeve 32, the anchor rod propelling device can select an oil cylinder or a motor, and the anchor rod propelling device pushes the anchor rod rock drill 64 to move along the anchor rod guide rail 63 so as to complete anchor rod operation; the drill rail 43 and the anchor rail 63 are located on both sides of the anchor rail 55, respectively.

In which the rockbolt drilling machine 64 and the drill drilling machine 44 can be propelled by the same cylinder or motor, or by two separate cylinders or motors, in this embodiment, the propulsion of the rockbolt drilling machine 64 and the drill drilling machine 44 is preferably accomplished by a propulsion cylinder 81.

In the embodiment, a limiting interlocking device 8 and an interlocking cylinder 82 for pushing the limiting interlocking device 8 to move transversely are further arranged, wherein when the drilling rock drill 44 is in a drilling position, the interlocking cylinder 82 drives the limiting interlocking device 8 to move to one side of the rock bolt drill 64 so that the rock bolt drill 64 is fixed, and the propelling cylinder 81 drives the drilling rock drill 44 to complete the drilling operation; when the rockbolt drilling machine 64 is in the bolting position, the interlock cylinder 82 drives the limit interlock 8 to move to the side of the drilling rock drilling machine 44 to fix the drilling rock drilling machine 44, and the propulsion cylinder 81 drives the rockbolt drilling machine 64 to complete the bolting operation.

By the arrangement, the drilling rock drill 44 and the anchor rod rock drill 64 can be driven by the single propulsion oil cylinder 81, the operation is simple and convenient, the cost of the whole vehicle can be effectively reduced, and the further popularization of underground support mechanization is facilitated.

Wherein, the propulsion cylinder 81 can complete the propulsion and the retraction of the drilling and rock drilling machine 44 and the rock bolting machine 64 through a wire rope or a chain, in the embodiment, as shown in the figure, the propulsion cylinder 81 completes the propulsion and the retraction of the drilling and rock drilling machine 44 and the rock bolting machine 64 through a wire rope; specifically, the sleeve 32 is further provided with an upper pulley block 83, a lower pulley block 84, a movable pulley block 85, a pull-back steel wire rope and a push steel wire rope, the upper pulley block 83 is fixed at the upper end of the sleeve 32, the lower pulley block 84 is fixed at the lower end of the sleeve 32, the movable pulley block 85 is installed at the middle section of the sleeve 32 and is pushed by the push oil cylinder 81 to enable the movable pulley block 85 to move up and down along the axial direction of the sleeve 32, one end of the pull-back steel wire rope is fixed on the drilling rock drill 44 and sequentially passes through one pulley in the lower pulley block 84, one pulley in the movable pulley block 85 and the other pulley in the lower pulley block 84, and the other end of the pull-back steel wire; one end of the propelling steel wire rope is fixed on the drilling rock drill 44 and sequentially passes under one pulley in the upper pulley block 83, the other pulley in the movable pulley block 85 and the other pulley in the upper pulley block 83, and the other end of the propelling steel wire rope is fixed on the rock bolting machine 64.

Further preferably, one end of the pull-back wire rope is fixed at a position a801 on the drilling rock drill 44 and the other end is fixed at a position B802 on the rockbolt rock drill 64, wherein the position a801 and the position B802 are both located above the lower pulley block 84;

and one end of the propulsion line is fixed at a position C803 on the drilling and rock drilling machine 44 and the other end is fixed at a position D804 on the bolting and rock drilling machine 64, wherein both the position C803 and the position D804 are located below the upper pulley block 83.

With such arrangement, when the rockbolt drilling machine 64 is fixed, the propelling cylinder 81 pushes the movable pulley block 85 to ascend, under the combined action of the pull-back steel wire rope and the propelling steel wire rope, and due to the fixation of the rockbolt drilling machine 64, the pull-back steel wire rope and the propelling steel wire rope can only push the drilling rock drilling machine 44 to ascend, and when the propelling cylinder 81 pulls the movable pulley block 85 to descend, under the combined action of the pull-back steel wire rope and the propelling steel wire rope, the drilling rock drilling machine 44 can descend; similarly, when the drill hammer 44 is stationary, the pull-back and push-in wires can only move the rock bolt drill 64 under the combined action of the pull-back and push-in wires and due to the stationary drill hammer 44.

It should be noted that in other embodiments, the propulsion cylinder 81 may also complete the propulsion and retraction of the rock drill 44 and rock bolt drill 64 via a chain.

In this embodiment, as shown in fig. 4 and 5, the limiting interlocking device 8 includes a limiting seat 86 and a limiting block 87, the limiting seat 86 is fixedly connected to the rotating beam, a limiting groove 88 is disposed on the limiting seat 86, the limiting block 87 is slidably mounted in the limiting groove 88 and connected to the interlocking cylinder 82, limiting blocks 89 are disposed at both left and right ends of the limiting block 87, and the limiting blocks 89 and the limiting blocks 87 are fixedly connected or integrally formed; wherein, when the interlocking cylinder 82 pushes the stopper 87 to slide toward the side of the rock drilling machine 44 and causes the stopper 89 on the side of the rock drilling machine 44 to contact the rock drilling machine 44, the movement of the rock drilling machine 44 in the axial direction is restricted and the stopper 89 on the side of the rock bolting machine 64 no longer contacts the rock bolting machine 64; when the interlocking cylinder 82 pushes the stopper 87 to slide toward the rockbolt drill 64 side and causes the stopper 89 on the rockbolt drill 64 side to contact the rockbolt drill 64, the movement of the rockbolt drill 64 in the axial direction is restricted and the stopper 89 on the drill 44 side no longer contacts the drill; further preferably, the limiting members 89 are bolts and fixed at two ends of the limiting member 87.

In the embodiment, when the switching oil cylinder 34 starts to drive the rotating beam to rotate, the interlocking oil cylinder 82 simultaneously starts to drive the limit interlocking device 8 to move; when the drilling rock drill 44 moves to the drilling position, the limiting and interlocking device 8 also moves to one side of the rock bolt drill 64 to limit the axial movement of the rock bolt drill 64; alternatively, when the rock bolt drilling machine 64 is moved to the drilling position, the limit interlock 8 is also moved to the side of the drilling rock drilling machine 44 at the same time to limit the axial movement of the drilling rock drilling machine 44. Further preferably, a schematic diagram of oil paths related to the switching cylinder 34, the interlocking cylinder 82 and the thrust cylinder 81 is shown in fig. 6, and a connected reversing valve a805 and a reversing valve B806 are further provided, wherein a large cavity of the switching cylinder 34 is communicated with a small cavity of the interlocking cylinder 82, a small cavity of the switching cylinder 34 is communicated with a large cavity of the interlocking cylinder 82, and two oil ports of the reversing valve a805 are respectively communicated with the large cavity and the small cavity of the switching cylinder 34 or the interlocking cylinder 82; two oil ports of the reversing valve B806 are respectively communicated with a large cavity and a small cavity of the thrust oil cylinder 81; the arrangement makes the switching cylinder 34 and the interlocking cylinder 82 always in a synchronous motion state, and the propulsion cylinder 81 starts to drive the drill rod rock drill or the rock bolt rock drill 64 to move after the switching cylinder 34 and the interlocking cylinder 82 complete the motion, so that the operation process becomes very simple and fast.

It should be noted that in other embodiments, the interlock cylinder 82 and the switch cylinder 34 may also not move simultaneously, yet switching and interlocking of the drill rock drill 44 and the rockbolt rock drill 64 may be accomplished; but relatively speaking, the working time is slightly prolonged and a reversing valve is also added.

In this embodiment, as shown in fig. 10, the anchoring assembly 53 comprises a tee, a first outlet 531 of which is provided with a first valve 532, a second outlet 533 of which is provided with a second valve 534, and a third outlet of which is connected with a first conduit 58 detachably connected with the lead pipe 54, wherein the first outlet 531 is connected with a second conduit for inputting the anchoring agent, and the second outlet 533 is connected with a third conduit for inputting water; so configured, when it is desired to fill the hole with the anchoring agent, the second valve 534 is closed, the first valve 532 is opened, the resin anchoring agent is introduced through the first outlet port 531, typically manually, and directly introduced, and then the first valve 532 is closed, the second valve 534 is opened, and the resin anchoring agent is introduced into the bottom of the hole and held there by the water flow.

Further preferably, the first conduit 58 is a hose; this is so arranged because when no anchoring agent needs to be loaded, the anchoring assembly 53 is disconnected from the lead 54, i.e. the first conduit 58 is separate from the lead 54 and the anchoring assembly 53 is a separate device not mounted on the three-position feed beam, so that when the lead 54 is extended into the hole bottom by the pusher 57, the first conduit 58, which is a hose, is again connected to the lead 54, so that the mounting of the anchoring assembly 53 on the three-position feed beam is not a concern and space is saved for the mounting of the anchoring device 6 and the drilling device 4; of course, it is also possible that the first conduit 58 is always connected to the lead 54.

Further preferably, the first valve 532 and the second valve 534 are ball valves; of course, in other embodiments, the first and second valves 532, 534 may be butterfly valves, globe valves, or other valves.

In this embodiment, the pushing member 57 of the anchoring device is a driving motor 350 or an electric motor, the pushing member 57 drives the sliding block 56 to move back and forth along the anchor rod guide rail 63 through a chain or a synchronous belt, and further preferably, fixed gears in transmission fit with the chain or the synchronous belt are installed at both ends of the anchor rod guide rail 55, and the pushing member 57 is in transmission connection with one of the fixed gears. With this arrangement, a sufficiently long stroke of the slider 56 and a sufficiently smooth movement of the guide tube 54 can be ensured.

Further preferably, a guide ring 59 is fixed to one end of the anchor rail 55, and the guide tube 54 passes through the guide ring 59. So configured, it is further ensured that the lead 54 will not deflect during insertion into the hole bottom.

In this embodiment, the concrete working process of the hydraulic anchor drill rig for underground support is as follows:

1) the driver operates the working arm to enable the three-station propelling beam to be located at a specified position according to a specified angle, the top plate 20 on the fixed beam 2 abuts against a roadway top plate to be anchored, and at the moment, the drilling rock drill 44 is located at a drilling position and the anchor rock drill 64 is in a fixed state;

2) and drilling: the propelling oil cylinder 81 drives the movable pulley block 85 to ascend, and drives the drilling rock drill 44 to ascend by pulling back the steel wire rope and propelling the steel wire rope so as to complete drilling work; after drilling is finished, the propelling oil cylinder 81 drives the movable pulley block 85 to descend, and the drilling rock drill 44 is driven to descend to the initial position by pulling back the steel wire rope and propelling the steel wire rope;

3) and an anchoring process: the switching oil cylinder 34 and the limiting oil cylinder 7 work simultaneously, so that the anchoring limiting block 51 abuts against the anchoring limiting base 52, then the pushing piece 57 drives the guide pipe 54 to extend into the bottom of a drill hole of the drill rod, firstly, the resin anchoring agent is injected into the guide pipe 54, then, the resin anchoring agent is conveyed into the bottom of the drill hole through water flow and is kept at the bottom of the drill hole, and then the pushing piece 57 drives the guide pipe 54 to extend out of the drill hole of the drill rod;

4) and an anchor rod process: the switching oil cylinder 34, the limiting oil cylinder 7 and the interlocking oil cylinder 82 work simultaneously, wherein a piston rod of the switching oil cylinder 34 extends to the maximum value to drive the rotating beam to rotate around the fixed beam 2, the anchor rod limiting block 61 is enabled to be abutted against the anchor rod limiting base 62, and meanwhile, a piston rod of the interlocking oil cylinder 82 extends to the maximum value to drive the limiting block 87 to move transversely in the limiting groove 88, and the drilling rock drill 44 is enabled to be fixed; then the propelling oil cylinder 81 drives the movable pulley block 85 to ascend, and drives the anchor rod rock drill 64 to lift through pulling back the steel wire rope and propelling the steel wire rope so as to complete anchor rod work;

5) after the anchor rod is completed, the propelling oil cylinder 81 drives the movable pulley block 85 to descend, and the anchor rod rock drill 64 is driven to descend to the initial position by pulling back the steel wire rope and propelling the steel wire rope; the piston rods of the switching cylinder 34 and the interlock cylinder 82 are then both retracted to the initial position so that the drilling rock drill 44 is in the drilling position and the rock bolt drill 64 is in a stationary state;

6) the anchor rod warehouse is used for replacing a new anchor rod for the rock drill;

7) and repeating the above operation steps, and further completing underground support at other positions.

It is worth mentioning that the top plate 20 on the fixed beam 2 always abuts against the same position on the roadway roof to be anchored in the drilling rod and anchoring process of the single anchor rod.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A three-station push beam comprises a support (1) arranged on a working arm and a rotating beam arranged on the support (1), wherein a drilling device (4) used for completing drilling operation, an anchor rod device (6) used for completing anchor rod operation and an anchoring device used for completing anchoring operation are arranged on the rotating beam;

the three-station propelling beam further comprises a fixed beam (2) fixedly mounted on the support (1), the rotating beam comprises a push rod (31), a sleeve (32) and a plurality of connecting pieces (33), the sleeve (32) and the push rod (31) are distributed in parallel and fixedly connected through the connecting pieces (33), the sleeve (32) is sleeved on the fixed beam (2) and can rotate relative to the fixed beam (2), the anchoring device, the drilling device (4) and the anchor rod device (6) are all mounted on the sleeve (32), the drilling device (4) and the anchor rod device (6) are respectively located on two sides of the anchoring device, and the push rod (31) is driven by a switching oil cylinder (34) to rotate by taking the fixed beam (2) as a central shaft; so that the drilling device (4) is in a drillable position during drilling operation, the anchoring device is in an anchorable position during anchoring operation, and the anchor rod device (6) is in an anchorable position during anchoring operation;

and in the drilling operation, the anchoring operation, the anchor rod operation and the rotating process of the rotating beam, the top end of the fixed beam (2) always abuts against the roadway top plate to be anchored and is fixed.

2. A three-station push beam according to claim 1, characterized in that the top end of the fixed beam (2) is provided with a top plate (20), and a plurality of protrusions are distributed on the upper surface of the top plate (20) so that the fixed beam (2) can be stably supported against the roadway roof to be anchored.

3. A three-position feed beam according to claim 1, characterised in that the push rod (31) is rotated through an angle of not more than 135 degrees relative to the axis of the fixed beam (2) when rotated from the initial position to the maximum rotatable position.

4. The three-station propelling beam as claimed in claim 1, further comprising a limiting oil cylinder (7), an anchoring limiting block (51) and an anchoring limiting base (52), wherein the anchoring limiting base (52) is mounted on the fixed beam (2) or the bracket (1), the anchoring limiting block (51) is fixedly mounted on the sleeve (32), in the process that the switching oil cylinder (34) drives the rotating beam to rotate anticlockwise, the drilling device (4), the anchoring device and the anchor rod device (6) are sequentially located at a drilling position, an anchoring position and an anchor rod position, the limiting oil cylinder (7) drives the anchoring limiting base (52) to move to be abutted against the anchoring limiting block (51) so that the anchoring device is located at the anchoring position, and in the process that the switching oil cylinder (34) drives the rotating beam to rotate clockwise, the anchoring limit base (52) does not abut against the anchoring limit block (51).

5. A three-station push beam according to claim 4, characterized in that the anchoring limiting base (52) is rotatably mounted on the fixed beam (2) or the bracket (1), and the limiting oil cylinder (7) is hinged with the anchoring limiting base (52).

6. A three-position feed beam according to claim 1, characterized in that the drilling device (4) comprises a drilling guide rail (43), a drilling rock drill (44) and a drilling propulsion device, the drilling guide rail (43) is arranged along the axial direction of the sleeve (32) and is fixedly arranged on the sleeve (32), the drilling propulsion device can select an oil cylinder or a motor, and the drilling propulsion device propels the drilling rock drill (44) to move along the drilling guide rail (43) to complete the drilling operation;

the anchoring device comprises an anchoring assembly (53) used for inputting and pushing the anchoring agent to move, a guide pipe (54) used for conveying the anchoring agent, an anchoring guide rail (55) and an anchoring propulsion device used for propelling the guide pipe (54) to move back and forth along the anchoring guide rail (55), wherein the anchoring guide rail (55) is arranged along the axial direction of the sleeve (32) and fixedly arranged on the sleeve (32), the anchoring propulsion device comprises a sliding block (56) and a pushing piece (57), the sliding block (56) is slidably arranged on the anchoring guide rail (55), the guide pipe (54) is fixedly connected with the sliding block (56) and detachably connected with the anchoring assembly (53), and the pushing piece (57) pushes the sliding block (56) to move back and forth on the anchoring guide rail (55) to complete the anchoring operation;

the anchor rod device (6) comprises an anchor rod guide rail (63), an anchor rod rock drill (64) and an anchor rod propelling device, the anchor rod guide rail (63) is arranged along the axial direction of the sleeve (32) and fixedly installed on the sleeve (32), the anchor rod propelling device can select an oil cylinder or a motor, and the anchor rod propelling device pushes the anchor rod rock drill (64) to move along the anchor rod guide rail (63) so as to complete anchor rod operation;

wherein the drill guide rail (43) and the anchor rod guide rail (63) are respectively positioned at two sides of the anchor guide rail (55).

7. A three-position feed beam according to claim 6, characterised in that the rockbolt drilling machine (64) and the drilling rock drilling machine (44) together use a feed cylinder (81) for both their advance and retraction;

the drilling and rock drilling machine is further provided with a limiting interlocking device (8) and an interlocking oil cylinder (82) used for pushing the limiting interlocking device (8) to move transversely, when the drilling and rock drilling machine (44) is located at a drilling position, the interlocking oil cylinder (82) drives the limiting interlocking device (8) to move to one side of the rock bolting machine (64) so that the rock bolting machine (64) is fixed, and the propelling oil cylinder (81) drives the drilling and rock drilling machine (44) to complete drilling operation; when the rockbolt drilling machine (64) is in a rockbolt position, the interlocking oil cylinder (82) drives the limiting interlocking device (8) to move to one side of the drilling rock drilling machine (44) to enable the drilling rock drilling machine (44) to be fixed, and the propelling oil cylinder (81) drives the rockbolt drilling machine (64) to complete rockbolt operation.

8. A three-position propelling beam according to claim 1, characterized in that the sleeve (32) is further provided with an upper pulley block (83), a lower pulley block (84), a movable pulley block (85), a pull-back wire rope and a propelling wire rope, the upper pulley block (83) is fixed at the upper end of the sleeve (32) and the lower pulley block (84) is fixed at the lower end of the sleeve (32), the movable pulley block (85) is arranged at the middle section of the sleeve (32) and is pushed by the propelling oil cylinder (81) to enable the movable pulley block (85) to move up and down along the axial direction of the sleeve (32), one end of the pull-back steel wire rope is fixed on the drilling rock drill (44), and sequentially passes under one pulley in the lower pulley block (84), one pulley in the movable pulley block (85) and the other pulley in the lower pulley block (84), and the other end of the pull-back steel wire rope is fixed on the anchor rod rock drill (64); one end of the propelling steel wire rope is fixed on the drilling rock drill (44), and sequentially bypasses one pulley in the upper pulley block (83), the other pulley in the movable pulley block (85) and the other pulley in the upper pulley block (83), and the other end of the propelling steel wire rope is fixed on the anchor rod rock drill (64);

one end of the pull-back steel wire rope is fixed at a position A (801) on the drilling rock drill (44), and the other end of the pull-back steel wire rope is fixed at a position B (802) on the anchor rod rock drill (64), wherein the position A (801) and the position B (802) are both positioned above the lower pulley block (84);

and one end of the propelling steel wire rope is fixed at a position C (803) on the drilling rock drill (44) and the other end of the propelling steel wire rope is fixed at a position D (804) on the anchor rod rock drill (64), wherein the position C (803) and the position D (804) are both positioned below the upper pulley block (83).

9. A three-position feed beam according to claim 6, wherein the anchoring assembly (53) comprises a tee, a first valve (532) is arranged at a first outlet end (531) of the tee, a second valve (534) is arranged at a second outlet end (533), and a first conduit (58) detachably connected with the guide pipe (54) is connected to the third outlet end, wherein the first outlet end (531) is used for inputting the anchoring agent, and the second outlet end (533) is connected to a third conduit used for inputting water.

10. A hydraulic rock bolt drill rig comprising a three-position feed beam according to any one of claims 1 to 9.

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