A drilling boom of a tunnel anchor rod trolley and a tunnel anchor rod trolley

Abstract

The present application relates to a kind of tunnel anchor rod trolley's drill arm and tunnel anchor rod trolley, fixed seat can be installed on the car body of anchor rod trolley, the rear end of support arm is hinged with fixed seat;At least three support frames are connected at the front end of support arm;At least three support frames can be converted between support state and retracted state these two states;When at least three support frames are in support state, at least three support frames are arranged along circumference and can be contacted with tunnel and ground, to support support arm;When at least three support frames are in retracted state, at least three support frames are folded in the side of support arm.The present application can support support arm when at least three support frames can support support arm when rock drill is drilled, to prevent support arm from being shaken due to the reaction force of rock drill drilling, influence drilling precision and work efficiency;When rock drill is not working, at least three support frames can be retracted, to prevent at least three support frames from affecting the movement and work of other components.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, and in particular to a drill arm and a tunnel anchor bolt trolley. Background Technology

[0002] The anchor bolt support operation typically involves three stages: drilling, grouting, and anchor bolt installation. Drilling is generally performed using an anchor bolt drilling rig. However, during operation, the drill arm supporting the drill bit experiences significant lateral force due to the reaction force from the tunnel's sides. Furthermore, the relatively long drill arm exhibits considerable swaying, impacting drilling efficiency and accuracy. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a drill arm for a tunnel anchor bolt trolley and a tunnel anchor bolt trolley, which solves the technical problem that the drill arm sways greatly due to the reaction force of the drill bit during drilling operations, thus affecting the drilling efficiency and accuracy.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0007] A drill arm for a tunnel anchor bolt trolley includes:

[0008] Fixed base, support arm and at least three support frames;

[0009] The fixed seat can be installed on the body of the anchor trolley, and the rear end of the support arm is hinged to the fixed seat;

[0010] The front end of the support arm can be equipped with a rock drilling machine, and at least three support frames are connected to the front end of the support arm;

[0011] The at least three support frames are capable of switching between a supported state and a retracted state;

[0012] When the at least three support frames are in a supported state, the at least three support frames are arranged circumferentially and can contact the tunnel and the ground to support the support arm;

[0013] When the at least three support frames are in the retracted state, the at least three support frames are folded to the side of the support arm.

[0014] Preferably, it further includes a connecting seat and a mounting seat;

[0015] One end of the connecting seat is connected to the bottom of the support arm, and the other end is hinged to the mounting base;

[0016] The at least three support frames are all mounted on the mounting base, which is capable of swinging up and down to adjust the angle between the at least three support frames and the support arm.

[0017] Preferably, the at least three support frames are three in total, one of which is a fixed support frame that is fixedly connected to the mounting base; the other two support frames are movable support frames that are hinged to the mounting base.

[0018] The fixed support frame is installed at the bottom of the mounting base, and the two movable support frames can swing up and down to be parallel or inclined to the fixed support frame.

[0019] Preferably, the support frame further includes two extension drive devices located on both sides of the fixed support frame, and the two extension drive devices are respectively connected to the two movable support frames to drive the two movable support frames to swing up and down.

[0020] Each of the aforementioned extension drive devices includes a first extension rod, a second extension rod, and a first telescopic actuator;

[0021] One end of the first extension rod is hinged to the fixed support frame, and the other end is hinged to the first end of the second extension rod and the first end of the first telescopic actuator;

[0022] The second end of the second extension rod is hinged to the movable support frame, and the second end of the first telescopic actuator is hinged to the fixed support frame.

[0023] Preferably, both the movable support frame and the fixed support frame include outer legs, inner legs, and auxiliary support parts;

[0024] One end of the inner support leg is embedded in the outer support leg and can slide along the axial direction of the outer support leg; the other end is equipped with a support head and the auxiliary support part.

[0025] The outer support leg is mounted on the mounting base;

[0026] The auxiliary support can move along the axial direction of the inner leg to selectively provide auxiliary support to the support head.

[0027] Preferably, the auxiliary support includes a sliding frame capable of moving axially along the inner support leg and...

[0028] Multiple auxiliary support blocks for supplementary support;

[0029] The plurality of auxiliary support blocks are evenly distributed along the circumference of the support head;

[0030] The plurality of auxiliary support blocks are installed one-to-one on one end of the first auxiliary support rod, and the other end of the first auxiliary support rod is hinged to the inner support leg.

[0031] The sliding frame is hinged with a plurality of second auxiliary support rods, and the plurality of second auxiliary support rods are respectively hinged to the first auxiliary support rod one by one.

[0032] Preferably, it also includes a rotary drive and a drilling rig mounting base;

[0033] The rotary drive is installed between the support arm and the drilling rig mounting base, and is used to drive the drilling rig mounting base to rotate about the axial direction of the support arm.

[0034] Preferably, it further includes a second telescopic actuator, the two ends of which are respectively hinged to the rotary actuator and the drilling rig mounting base to adjust the included angle between the axial directions of the support arm of the drilling rig mounting base.

[0035] Preferably, the support arm sequentially comprises a first support section, a pitching seat, and a second support arm in the direction from the fixed base to the drilling rig mounting base;

[0036] The first support section is capable of extending and retracting along its axial direction and can swing in the vertical and horizontal directions to adjust the position of the rock drilling rig.

[0037] The pitch seat can swing in the vertical direction;

[0038] The second support arm is capable of swinging in the left and right direction, and both the support frame and the rotary driver are mounted on the second support arm.

[0039] A tunnel anchor bolt trolley, comprising the drill arm of the tunnel anchor bolt trolley described in any of the above embodiments.

[0040] (III) Beneficial Effects

[0041] The beneficial effects of this invention are:

[0042] (1) The present invention can support the support arm when the rock drilling machine is drilling, by means of at least three support frames, so as to prevent the support arm from shaking due to the reaction force of the rock drilling machine, which would affect the drilling accuracy and working efficiency; when the rock drilling machine is not working, at least three support frames can be retracted to prevent at least three support frames from affecting the movement and operation of other components.

[0043] (2) The present invention, through the auxiliary support, can increase the support points between the fixed support frame and the ground or tunnel for the movable support frame. This increases friction and ensures the stability of the support of the fixed support frame and the movable support frame.

[0044] (3) The present invention can adjust multiple angles of the rock drilling machine installed on the drilling rig base through the support arm and the rotary drive, so that the drill bit of the rock drilling machine can drill vertically into the tunnel. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of the drill arm of the tunnel anchor bolt trolley of the present invention.

[0046] Figure 2 This is a diagram showing the state of the drill arm of the tunnel anchor bolt trolley of the present invention in use inside a tunnel.

[0047] Figure 3 for Figure 2 The main view;

[0048] Figure 4 for Figure 2 The left view;

[0049] Figure 5 This is a schematic diagram of the overall structure of the support frame of the present invention;

[0050] Figure 6 for Figure 5 Enlarged schematic diagram of point I in the middle;

[0051] Figure 7 This is a schematic diagram of the overall structure of the movable support frame in this invention;

[0052] Figure 8 This is a schematic diagram of the overall structure of the movable support frame of the present invention;

[0053] Figure 9 for Figure 8 Enlarged schematic diagram at point II;

[0054] Figure 10 This is a schematic diagram of the combination of the auxiliary support and the inner leg in this invention.

[0055] [Explanation of Labels in the Attached Image]

[0056] 1: Fixed base; 2: Second support base; 3: First support section; 4: Inner arm of the first support section; 5: Third support base; 6: Sixth telescopic actuator; 7: Fifth telescopic actuator; 8: First support base; 9: Pitch base; 10: Second support arm; 11: Seventh telescopic actuator; 12: Eighth telescopic actuator; 13: Rotary actuator; 14: Second telescopic actuator; 15: Drilling rig mounting base; 16: Support frame; 17: Support telescopic actuator; 18: Tunnel; 19: Support section telescopic actuator; 16.1: Movable support frame; 16.2 16.1: Connecting seat; 16.3: Mounting seat; 16.4: Second extension rod; 16.5: First extension rod; 16.6: Swing seat; 16.7: First telescopic actuator; 16.1.1: Outer leg; 16.1.2: Inner leg; 16.1.3: Third telescopic actuator; 16.1.4: Fourth telescopic actuator; 16.1.5: Convex tooth; 16.1.6: Sliding frame; 16.1.7: Second auxiliary support rod; 16.1.8: First auxiliary support rod; 16.1.9: Auxiliary support block; 16.1.10: Support head. Detailed Implementation

[0057] To better explain and facilitate understanding of the present invention, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Wherein, Figure 1 For reference, in this embodiment, Figure 1 The direction shown on the drilling rig mounting base 15 is defined as the "up and down direction", the axial direction of the support arm is defined as the "front and back direction", and the direction perpendicular to both the up and down direction and the front and back direction is defined as the "left and right direction".

[0058] Example 1

[0059] like Figures 1-3 As shown, a drill arm for a tunnel anchor bolt trolley includes: a fixed base 1, a support arm, and at least three support frames 16. The fixed base 1 can be mounted on the body of the anchor bolt trolley, and the rear end of the support arm is hinged to the fixed base 1. A rock drilling rig can be mounted on the front end of the support arm, and at least three support frames 16 are connected to the front end of the support arm. The at least three support frames 16 can switch between a supported state and a retracted state. When the at least three support frames 16 are in the supported state, they are arranged circumferentially and can contact the tunnel 18 and the ground to support the support arm. When the at least three support frames 16 are in the retracted state, they are folded to the side of the support arm. A portion of the at least three support frames 16 contacts the tunnel 18, and another portion contacts the ground.

[0060] In the prior art, rock drilling rigs use a drill arm for support when drilling tunnel 18. When drilling, the rig exerts a reaction force on the support arm, which, due to its long length, often sways. This prevents the rig from drilling in the predetermined position, resulting in low drilling accuracy and potentially requiring re-drilling, thus reducing work efficiency. This invention, however, uses at least three support frames 16 to support the support arm during drilling, preventing it from swaying due to the reaction force from the drilling and thus improving drilling accuracy and efficiency. When the rig is not in operation, the at least three support frames 16 can be retracted to prevent them from interfering with the movement and operation of other components.

[0061] like Figure 5 and 6 The system also includes a connecting seat 16.2 and a mounting seat 16.3. One end of the connecting seat 16.2 is connected to the bottom of the support arm, and the other end is hinged to the mounting seat 16.3. At least three support frames 16 are mounted on the mounting seat 16.3, which can swing up and down to adjust the angle between the at least three support frames 16 and the support arm. When the support frame 16 is in the retracted state, the mounting seat 16.3 and the at least three support frames move upward from a state perpendicular to the axis of the support arm to a state parallel to the support arm, so that the at least three support frames retract to the bottom of the support arm to prevent the at least three support frames 16 from affecting the extension and retraction of the support arm or the movement of the anchor trolley. When the support frame 16 is in the supported state, the mounting seat 16.3 and the at least three support frames 16 rotate from a state parallel to the support arm to a state perpendicular to the support arm, so that the at least three support frames support the support arm and prevent the support arm from shaking and affecting the drilling accuracy of the rock drilling rig during drilling.

[0062] like Figure 5 As shown, there are at least three support frames 16, one of which is a fixed support frame that is fixedly connected to the mounting base 16.3, and the other two support frames 16 are movable support frames 16.1 that are hinged to the mounting base 16.3. The fixed support frame is installed at the bottom of the mounting base 16.3, and the two movable support frames 16.1 can swing up and down to be parallel or inclined to the fixed support frame.

[0063] Specifically, in this embodiment, when the support frame 16 is in the supported state, the mounting base 16.3 and the three support frames 16 swing from a state parallel to the support arm to a state perpendicular to the support arm. The two movable support frames 16.1 swing so that the included angle between the two movable support frames 16.1 and the fixed support frame is 120°. The fixed support frame extends and contacts the ground, and the two movable support frames 16.1 extend and contacts the tunnel 18. The support arm is supported by the three support frames, making the support arm more stable and preventing the drilling accuracy of the rock drilling machine from being affected by the shaking of the support arm when the rock drilling machine is drilling.

[0064] When the support frame 16 is in the retracted state, both the fixed support frame and the movable support frame 16.1 are retracted. The two movable support frames 16.1 rotate so that they are parallel or inclined to the fixed support frame. The mounting base 16.3 and at least three support frames 16 rotate upward from a state perpendicular to the axis of the support arm to a state parallel to the support arm. The support frame 16 retracts to the bottom of the support arm, and the fixed support frame is parallel to the support arm.

[0065] like Figure 5 As shown, the support frame 16 also includes two extension drive devices located on both sides of the fixed support frame. The two extension drive devices are connected to two movable support frames 16.1 respectively, enabling the movable support frames 16.1 to swing up and down. Each extension drive device includes a first extension rod 16.5, a second extension rod 16.4, and a first telescopic actuator 16.7. One end of the first extension rod 16.5 is hinged to the fixed support frame, and the other end is hinged to the first end of the second extension rod 16.4 and the first end of the first telescopic actuator 16.7. The second end of the second extension rod 16.4 is hinged to the movable support frame 16.1, and the second end of the first telescopic actuator 16.7 is hinged to the fixed support frame. The extension and retraction of the first telescopic actuator 16.7 causes the two movable support frames 16.1 to move away from or closer to the fixed support frame, thus supporting the support arm or retracting it to the bottom of the support arm.

[0066] In this embodiment, a swing seat 16.6 is also included. The swing seat 16.6 is sleeved on the fixed support frame. The first extension rod 16.5, the second extension rod 16.4 and the first telescopic driver 16.7 are all hinged to the swing seat 16.6.

[0067] In this embodiment, the first telescopic actuator 16.7 is a hydraulic cylinder. Of course, in this solution, the first telescopic actuator 16.7 is not limited to the structure of a hydraulic cylinder. In other embodiments of this solution, the first telescopic actuator 16.7 can also be a telescopic rod or a pneumatic cylinder, as long as it can extend the movable support frame 16.1 and support the support arm.

[0068] In this embodiment, a support telescopic actuator 17 is also included. The two ends of the support telescopic actuator 17 are hinged to the swing seat 16.6 and the support arm, respectively. The telescopic end of the support telescopic actuator 17 can extend and retract to drive the support frame 16 away from the support arm, that is, the support frame 16 is in a supported state, or close to the support arm, that is, the support frame 16 is in a retracted state.

[0069] In this embodiment, the support telescopic actuator 17 is a hydraulic cylinder. Of course, in this solution, the support telescopic actuator 17 is not limited to the structure of a hydraulic cylinder. In other embodiments of this solution, the support telescopic actuator 17 can also be a telescopic rod or a pneumatic cylinder, as long as it can drive the three support frames 16 to switch between the supported state and the retracted state.

[0070] like Figure 7 As shown, the movable support frame 16.1 and the fixed support frame have the same structure. Both the movable support frame 16.1 and the fixed support frame include an outer support leg 16.1.1, an inner support leg 16.1.2, and an auxiliary support part. One end of the inner support leg 16.1.2 is embedded in the outer support leg 16.1.1 and can slide along the axial direction of the outer support leg 16.1.1. The other end is equipped with a support head 16.1.10 and an auxiliary support part. The outer support leg 16.1.1 is mounted on the mounting base 16.3. The auxiliary support part can move along the axial direction of the inner support leg 16.1.2 to selectively provide auxiliary support for the support head 16.1.10.

[0071] Specifically, a third telescopic actuator 16.1.3 is installed inside the outer outrigger 16.1.1. The two ends of the third telescopic actuator 16.1.3 are connected to the outer outrigger 16.1.1 and the inner outrigger 16.1.2, respectively. The third telescopic actuator 16.1.3 drives the inner outrigger 16.1.2 to extend or shorten along the axial direction of the outer outrigger 16.1.1. A fourth telescopic actuator 16.1.4 is installed inside the inner outrigger 16.1.2. The two ends of the fourth telescopic actuator 16.1.4 are connected to the inner outrigger 16.1.2 and the auxiliary support, respectively. The fourth telescopic actuator 16.1.4 drives the auxiliary support to move along the axial direction of the inner outrigger 16.1.2 to provide auxiliary support for the support head 16.1.10, increasing the contact area between the movable support frame 16.1 and the fixed support frame and the tunnel 18 or the ground, increasing friction, and thus increasing the stability of the support frame 16 in supporting the support arm.

[0072] In this embodiment, both the third telescopic actuator 16.1.3 and the fourth telescopic actuator 16.1.4 are hydraulic cylinders. Of course, in this solution, the third telescopic actuator 16.1.3 and the fourth telescopic actuator 16.1.4 are not limited to hydraulic cylinders. In other embodiments of this solution, the third telescopic actuator 16.1.3 or the fourth telescopic actuator 16.1.4 can also be a telescopic rod or a pneumatic cylinder.

[0073] like Figures 7-9As shown, the auxiliary support includes a sliding frame 16.1.6 that can move axially along the inner support leg 16.1.2; a plurality of auxiliary support blocks 16.1.9 for auxiliary support, which are evenly distributed around the support head 16.1.10; the plurality of auxiliary support blocks 16.1.9 are installed one-to-one with one end of the first auxiliary support rod 16.1.8, and the other end of the first auxiliary support rod 16.1.8 is hinged to the inner support leg 16.1.2; a plurality of second auxiliary support rods 16.1.7 are hinged to the sliding frame 16.1.6, and the plurality of second auxiliary support rods 16.1.7 are respectively hinged one-to-one with the first auxiliary support rod 16.1.8.

[0074] Specifically, in this embodiment, a slide rail is also included. The slide rail includes a sliding disc embedded in the inner support leg 16.1.2. One end of the sliding disc is connected to the fourth telescopic actuator 16.1.4. The sliding disc has three protruding teeth 16.1.5 evenly distributed around its circumference. The inner support leg 16.1.2 has three sliding grooves along its axial direction. The three protruding teeth 16.1.5 can slide in the three sliding grooves respectively and extend out of the sliding grooves to connect with the sliding frame 16.1.6. The fourth telescopic actuator 16.1.4 drives the sliding disc, the protruding teeth 16.1.5, and the sliding frame 16.1.6 to move along the axial direction of the inner support leg 16.1.2, so that the auxiliary support block 16.1.9 moves closer to or further away from the ground or tunnel 18.

[0075] like Figure 1 and 2 As shown, it also includes a rotary drive 13 and a drilling rig mounting base 15; the rotary drive 13 is installed between the support arm and the drilling rig mounting base 15 and is used to drive the drilling rig mounting base 15 to rotate around the axial direction of the support arm.

[0076] by Figure 1 For reference, in this embodiment, a propulsion beam is installed on the drilling rig mounting base 15, and a rock drilling rig is installed on the propulsion beam. The propulsion beam extends in the vertical direction and can drive the rock drilling rig to move in the vertical direction.

[0077] like Figures 1-3 As shown, it also includes a second telescopic actuator 14, whose two ends are hinged to the rotary actuator 13 and the drill mount 15, respectively, to adjust the axial angle between the drill mount 15 and the support arm. By driving the drill mount 15 to rotate through the second telescopic actuator 14, the angle of the drill bit of the rock drilling rig is adjusted, allowing the drill bit of the rock drilling rig to drill vertically into the tunnel 18.

[0078] In this embodiment, the second telescopic actuator 14 is a hydraulic cylinder. Of course, in this solution, the second telescopic actuator 14 is not limited to the structure of a hydraulic cylinder. In other embodiments of this solution, the second telescopic actuator 14 can also be a telescopic rod or a pneumatic cylinder, as long as it can adjust the axial angle between the drilling rig mounting base 15 and the support arm and fix the drilling rig mounting base 15.

[0079] like Figures 1-3 As shown, the support arm, in the direction from the fixed base 1 to the drill mounting base 15, sequentially includes a first support section 3, a pitch seat 9, and a second support arm 10. The first support section 3 can extend and retract along its axial direction and can swing in the vertical and horizontal directions to adjust the position of the rock drilling rig. The pitch seat 9 can swing in the vertical direction. The second support arm 10 can swing in the horizontal direction. The support frame 16 and the rotary drive 13 are both mounted on the second support arm 10. The first support section 3 allows for large-scale adjustment of the rock drilling rig's direction, while the second support arm 10 allows for fine-tuning of the rock drilling rig's direction, making the adjustment of the rock drilling rig more precise and the drilling accuracy higher.

[0080] The first support segment 3 includes an outer arm and an inner arm 4. The rear end of the inner arm 4 is embedded in the outer arm and can slide along the axial direction of the outer arm. The front end is hinged to the pitch seat 9. Specifically, a telescopic actuator 19 is installed inside the outer arm. Both ends of the telescopic actuator 19 are hinged to the outer arm and the inner arm 4, respectively. The telescopic end of the telescopic actuator 19 extends and retracts, causing the inner arm 4 to move along the axial direction of the first support segment 3, thereby lengthening or shortening the support arm.

[0081] Specifically, this embodiment also includes a fifth telescopic actuator 7, a sixth telescopic actuator 6, a seventh telescopic actuator 11, an eighth telescopic actuator 12, a first support base 8, a second support base 2, and a third support base 5. The first support base 8 and the second support base 2 are both hinged to the fixed base 1. The rear end of the outer arm of the first support segment is hinged to the second support base 2. The fifth telescopic actuator 7 is mounted on the bottom of the first support segment 3 to allow the first support segment 3 to swing vertically. Both ends of the fifth telescopic actuator 7 are hinged to the second support base 2 and the first support segment 3, respectively. The sixth telescopic actuator 6 is mounted on the side of the outer arm of the first support segment to allow the outer arm to swing horizontally. Both ends of the sixth telescopic actuator 6 are hinged to the first support base 8 and the third support base 5, respectively. The seventh telescopic actuator 11 is mounted on the side of the pitch base 9 to allow the second support arm 10 to swing horizontally. Both ends of the seventh telescopic actuator 11 are hinged to the second support arm 10 and the pitch base 9, respectively. The eighth telescopic actuator 12 is installed at the bottom of the pitch seat 9 and is used to make the pitch seat 9 swing up and down. The two ends of the eighth telescopic actuator 12 are respectively hinged to the pitch seat 9 and the inner arm 4 of the first support section.

[0082] The telescopic actuator 17 is hinged to the second support arm 10.

[0083] In this embodiment, the fifth telescopic actuator 7, the sixth telescopic actuator 6, the seventh telescopic actuator 11, and the eighth telescopic actuator 12 are all hydraulic cylinders. Of course, in this solution, the fifth telescopic actuator 7, the sixth telescopic actuator 6, the seventh telescopic actuator 11, and the eighth telescopic actuator 12 are not limited to the structure of hydraulic cylinders. In other embodiments of this solution, the fifth telescopic actuator 7, the sixth telescopic actuator 6, the seventh telescopic actuator 11, and the eighth telescopic actuator 12 can also be telescopic rods or cylinders, as long as they can adjust the angle of the outer arm of the first support section and the second support arm 10.

[0084] like Figure 1 As shown, when the present invention is in use, the extension and retraction of the support arm drives the rock drilling machine mounted on the drilling rig mounting base 15 to move in the front-to-back direction. The fifth extension drive 7, the sixth extension drive 6, the seventh extension drive 11 and the eighth extension drive 12 cause the support arm to swing up and down and left and right. The rotary drive 13 and the second extension drive 14 adjust the drilling rig mounting base 15 and push the beam to bring the drill bit of the rock drilling machine to the position to be drilled. After the rock drilling rig is positioned, the telescopic end of the support telescopic actuator 17 extends, making the three fixed support frames vertical. The telescopic end of the first telescopic actuator 16.7 extends, moving the two movable support frames 16.1 away from the fixed support frames. The angle between the movable support frames 16.1 and the fixed support frames is 120°. The telescopic end of the third telescopic actuator 16.1.3 extends, so that the fixed support frame and the movable support frame 16.1 contact the ground and the tunnel 18 respectively. The telescopic end of the fourth telescopic actuator 16.1.4 extends, so that the tooth 16.1.5, the sliding frame 16.1.6, and the auxiliary support block 16.1.9 move closer to the support head 16.1.10 and contact the ground or the tunnel 18.

[0085] After drilling is completed, the telescopic end of the third telescopic actuator 16.1.3 shortens, and both the fixed support frame and the movable support frame 16.1 retract. The telescopic end of the first telescopic actuator 16.7 shortens, and the two movable support frames 16.1 rotate, making them parallel or inclined to the fixed support frame. The telescopic end of the support telescopic actuator 17 shortens, causing the mounting base 16.3 and the fixed support frame to rotate upward from a state perpendicular to the axis of the support arm to a state parallel to the support arm. The fixed support frame 16 retracts to the bottom of the support arm, and the fixed support frame is parallel to the support arm.

[0086] Example 2

[0087] A tunnel anchor bolt trolley, comprising the drill arm of the tunnel anchor bolt trolley in any of the above embodiments.

[0088] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0089] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0090] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0091] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0092] 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. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A drill arm for a tunnel anchor bolt trolley, characterized in that, include: The fixed base (1), support arm, connecting base (16.2), mounting base (16.3), support telescopic actuator (17) and three support frames (16); the fixed base (1) can be installed on the body of the anchor trolley, and the rear end of the support arm is hinged to the fixed base (1); The front end of the support arm can be equipped with a rock drilling machine, and the three support frames (16) are connected to the front end of the support arm; One end of the connecting seat (16.2) is connected to the bottom of the support arm, and the other end is hinged to the mounting seat (16.3); One of the three support frames (16) is constructed as a fixed support frame that is fixedly connected to the mounting base (16.3); the other two support frames (16) are constructed as movable support frames (16.1) that are hinged to the mounting base (16.3). The fixed support frame is installed at the bottom of the mounting base (16.3); the two ends of the support telescopic actuator (17) are respectively hinged to the fixed support frame and the support arm; The support frame (16) also includes two extension drive devices located on both sides of the fixed support frame. The two extension drive devices are connected to the two movable support frames (16.1) respectively, so as to drive the two movable support frames (16.1) to swing up and down, so as to be parallel or inclined to the fixed support frame. The three support frames (16) can switch between the supported state and the retracted state; When the three support frames (16) are in the retracted state, the three support frames (16) are folded at the bottom of the support arm and parallel to the support arm; When the three support frames (16) switch from the retracted state to the supported state, the support telescopic driver (17) first drives the mounting base (16.3) and the three support frames (16) to swing from a parallel state relative to the support arm to a perpendicular state relative to the support arm, thereby driving the three support frames (16) away from the support arm; then the two extension drive devices respectively drive the corresponding movable support frame (16.1) to swing from a parallel state relative to the fixed support frame to an inclined state relative to the fixed support frame, so that the three support frames (16) are arranged circumferentially and can contact the tunnel (18) and the ground to support the support arm.

2. The drill arm of the tunnel anchor bolt trolley as described in claim 1, characterized in that, Each of the aforementioned extension drive devices includes a first extension rod (16.5), a second extension rod (16.4), and a first telescopic actuator (16.7). One end of the first extension rod (16.5) is hinged to the fixed support frame, and the other end is hinged to the first end of the second extension rod (16.4) and the first end of the first telescopic actuator (16.7); The second end of the second extension rod (16.4) is hinged to the movable support frame (16.1), and the second end of the first telescopic actuator (16.7) is hinged to the fixed support frame.

3. The drill arm of the tunnel anchor bolt trolley as described in claim 1, characterized in that, Both the movable support frame (16.1) and the fixed support frame include an outer support leg (16.1.1), an inner support leg (16.1.2), and an auxiliary support part; One end of the inner support leg (16.1.2) is embedded in the outer support leg (16.1.1) and can slide along the axial direction of the outer support leg (16.1.1), while the other end is equipped with a support head (16.1.10) and the auxiliary support part; The outer support leg (16.1.1) is mounted on the mounting base (16.3); The auxiliary support can move along the axial direction of the inner leg (16.1.2) to selectively provide auxiliary support to the support head (16.1.10).

4. The drill arm of the tunnel anchor bolt trolley as described in claim 3, characterized in that, The auxiliary support includes a sliding frame (16.1.6) capable of moving axially along the inner leg (16.1.2) and... Multiple auxiliary support blocks for auxiliary support (16.1.9). The plurality of auxiliary support blocks (16.1.9) are evenly distributed along the circumference of the support head (16.1.10); The plurality of auxiliary support blocks (16.1.9) are installed one-to-one with one end of the first auxiliary support rod (16.1.8), and the other end of the first auxiliary support rod (16.1.8) is hinged to the inner support leg (16.1.2); The sliding frame (16.1.6) is hinged with a plurality of second auxiliary support rods (16.1.7), and the plurality of second auxiliary support rods (16.1.7) are respectively hinged to the first auxiliary support rod (16.1.8).

5. The drill arm of the tunnel anchor bolt trolley as described in any one of claims 1 to 4, characterized in that, It also includes a rotary drive (13) and a drilling rig mounting base (15); The rotary drive (13) is installed between the support arm and the drilling rig mounting base (15) to drive the drilling rig mounting base (15) to rotate around the axial direction of the support arm.

6. The drill arm of the tunnel anchor bolt trolley as described in claim 5, characterized in that, It also includes a second telescopic actuator (14), the two ends of which are hinged to the rotary actuator (13) and the drill mount (15) respectively, so as to adjust the axial angle between the drill mount (15) and the support arm.

7. The drill arm of the tunnel anchor bolt trolley as described in claim 5, characterized in that, The support arm, in the direction from the fixed seat (1) to the drilling rig mounting seat (15), includes a first support section (3), an elevation seat (9), and a second support arm (10). The first support section (3) can extend and retract along its axial direction and can swing in the up-down and left-right directions to adjust the position of the rock drilling rig; The pitch seat (9) can swing in the up and down direction; The second support arm (10) is capable of swinging in the left and right direction, and the support frame (16) and the rotary driver (13) are both mounted on the second support arm (10).

8. A tunnel anchor bolt trolley, characterized in that, The drill arm of the tunnel anchor trolley as described in any one of claims 1 to 7.

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