A joint conversion device and method for converting a rock drill between a bolt and a drill rod

Abstract

The present invention relates to a joint conversion device and method for converting a rock drill into a bolt and a drill rod, belonging to the technical field of tunnel rock drilling jumbo. The technical solution is as follows: A swing telescopic mechanism drives a conversion joint (2-10) to perform telescopic swing. The front end of the conversion joint (2-10) is provided with a bolt positioning head, and the rear end is provided with a shifting rod (2-11); the bolt positioning head at the front end of the conversion joint (2-10) matches the structure of the bolt tail. According to different bolts, different bolt positioning heads are used to position the bolt (5) on the conversion joint (2-10), and the conversion joint (2-10) is connected to the output end (1-1) of the rock drill. The beneficial effects of the present invention are as follows: The joint conversion device is used to automatically realize the conversion between the drill rod and the bolt without manual intervention. A single rock drill is used to complete drilling and bolt installation, saving space, improving work efficiency, and reducing labor intensity.

Description

Technical Field

[0001] The invention relates to a joint conversion device and method for converting an anchor rod and a drill rod of a rock drill, belonging to the technical field of tunnel rock drilling trolleys. Background Art

[0002] There are two ways to work with a tunnel trolley (also called a rock drilling trolley): 1. Use two rock drills, one rock drill is equipped with a drill rod and is responsible for drilling holes. After drilling the anchor hole, the rock drill leaves and another rock drill is used to install the anchor in the anchor hole. Since the space for tunnel construction and underground mining is very narrow, using two rock drills to work alternately takes up a large space, is inconvenient to operate, and increases equipment investment. 2. Use a rock drill, and after drilling the hole with a drill rod, manually replace the drill rod on the rock drill with an anchor to complete the installation of the anchor. Manually and alternately adding drill rods and anchors to the anchor trolley is poor in economy, takes a long time, has low efficiency, and has high labor intensity, which increases construction costs.

[0003] If a rock drill is used to automatically replace the drill rod on the rock drill with an anchor rod, the above problems existing in the prior art can be completely solved. However, there is no available joint conversion device on the existing rock drill, and it is impossible to automatically replace the drill rod on a rock drill with an anchor rod. How to realize the automatic conversion between the drill rod and the anchor rod on the rock drill is a technical problem that needs to be solved urgently in the field. Summary of the invention

[0004] The purpose of the present invention is to provide a joint conversion device and method for converting anchor rods and drill rods of a rock drill, wherein the joint conversion device is used to automatically realize the conversion between the drill rod and the anchor rod without manual intervention, and one rock drill is used to complete drilling and installing the anchor rod, thereby saving space, improving work efficiency, reducing labor intensity, and solving the above-mentioned technical problems existing in the prior art.

[0005] The technical solution of the present invention is:

[0006] A joint conversion device for converting anchor rods and drill rods of a rock drill comprises a swinging and telescopic mechanism and a conversion joint, wherein the swinging and telescopic mechanism drives the conversion joint to telescope and swing, and an anchor rod positioning head is provided at the front end of the conversion joint, and a lever is provided at the rear end; the swinging and telescopic mechanism comprises a push rod, a connecting plate, a swing frame, a compression spring, a rocker arm, a screw rod, a tension spring and a base plate bracket; the base plate bracket is fixed to the base plate of the rock drill, the swing frame is arranged on the base plate bracket, the base plate bracket is provided with a swing hole, the screw rod passes through the swing hole and can swing in the swing hole; one end of the screw rod is provided with a tension spring, and the other end is connected to the push rod through the connecting plate, one end of the push rod is pressed against the limit plate of the rock drill, and the other end is connected to one end of the rocker arm in the swing frame, and a compression spring is arranged in the rocker arm jacket; the other end of the rocker arm is connected to the conversion joint.

[0007] The rear end of the adapter is matched with the output end of the rock drill. The structure of the output end of the rock drill is as follows: an internal threaded hole is provided at the end, and the internal thread is matched with the external thread at the tail of the drill rod to connect the drill rod and the output end of the rock drill together; a plug-in slot is provided on the wall of the internal threaded hole, and the plug-in slot is matched with the lever at the tail of the adapter to connect the adapter and the output end of the rock drill together.

[0008] The screw rod is fastened to the connecting plate by a nut; the tension spring is arranged on the pin shaft and the screw rod.

[0009] The anchor rod positioning head at the front end of the adapter is matched with the structure at the tail of the anchor rod. According to different anchor rods, different anchor rod positioning heads are used to position the anchor rod on the adapter and connect the anchor rod to the output end of the rock drill through the adapter.

[0010] The anchor rod at least includes the following two types:

[0011] 1. The anchor rod is a slotted pipe anchor rod. The tail of the slotted pipe anchor rod is a pipe body with a slit. The structure of the matching adapter is as follows: the anchor rod positioning head is a front-end cone, which is matched with the tail of the slotted pipe anchor rod; a lever is provided on the rear-end cylinder of the adapter, and the lever is matched with the plug-in slot on the output end of the rock drill;

[0012] 2. The anchor rod is a resin anchor rod. The structure of the matching adapter is as follows: the anchor rod positioning head is a front-end cylinder, and an internal hole is provided in the front-end cylinder, and the internal hole is matched with the tail nut of the resin anchor rod; a lever is provided on the rear-end cylinder of the adapter, and the lever is matched with the plug-in slot on the output end of the rock drill.

[0013] The rock drill moves on the slideway. The slideway is arranged on the orienting body. An anchor rod bin is arranged on the orienting body. The anchor rod bin is an annular cylinder. A plurality of anchor rods are arranged on the inner wall of the annular cylinder of the anchor rod bin. The anchor rod, the slideway and the drill rod are all arranged along the central axis direction of the annular cylinder of the anchor rod bin. The rock drill, the slideway and the drill rod are arranged in the anchor rod bin; a joint conversion device is provided at the output shaft end of the rock drill, and the alternate conversion of the drill rod and the anchor rod on the rock drill is realized through the joint conversion device.

[0014] The rock drill is installed on the rock drill base plate, and the rock drill base plate slides on the slideway; a limiting plate is provided at the tail of the slideway to limit and block the rock drill on the slideway.

[0015] A method for converting the anchor rod and the drill rod of a rock drill uses the above joint conversion device for conversion. The specific steps are as follows:

[0016] In the initial drilling state, the tail of the drill rod is provided with an external thread, and the output end of the rock drill is provided with an internal thread. The drill rod is connected to the output end of the rock drill through the thread;

[0017] The adapter rotates clockwise to the limit position due to the pulling force of the tension spring; the adapter is located at the lower part of the rock drill. As the rock drill advances forward, the ejector rod gradually separates from the limit plate. At the same time, the compression spring expands, driving the rocker arm and the adapter to move backward, hiding the adapter under the rock drill;

[0018] The adapter and the output end of the rock drill have both a plug - and - unplug structure and a plug - and - unplug card slot; the adapter has no relation with the drill rod, but only plays a role in connecting the output end of the rock drill and the anchor rod together;

[0019] After the drilling is completed, the rock drill retracts to the bottommost position. As the rock drill moves backward, the ejector rod contacts the limit plate and starts to push the rocker arm and the adapter forward; at this time, the compression spring starts to compress until the rock drill retracts to the bottommost position. At this time, the adapter moves forward to exceed the front end of the output end of the rock drill;

[0020] The manipulator rotates the drill rod and removes it from the output end of the rock drill; at the same time, the rocker arm is toggled to drive the adapter to rotate counterclockwise, making the adapter and the output end of the rock drill on the same central axis; the manipulator installs the anchor rod on the anchor rod positioning head of the adapter. At this time, the output end of the rock drill, the adapter, and the anchor rod are on the same central axis. Then, the rock drill is pushed forward and the rotation of the rock drill is turned on, causing the output end of the rock drill to rotate and advance forward. As the rock drill advances forward, the ejector rod and the limit plate start to separate. At this time, the compression spring starts to expand, driving the adapter to exert a backward force until the tail of the adapter is inserted into the threaded hole of the output end of the rock drill. As the output end of the rock drill rotates and advances, the shift lever coincides with the plug - and - unplug card slot on the output end of the rock drill, completing the action of the output end of the rock drill driving the adapter to rotate; at this time, the rock drill drives the adapter to continue to advance forward, completing the combination of the adapter and the anchor rod; as the rock drill continues to advance forward, the installation of the anchor rod is completed.

[0021] The manipulator involved in the present invention here can complete the rotation and removal of the drill rod, and at the same time move a root of anchor rod in the anchor rod bin to the adapter and install it on the anchor rod positioning head. The manipulator to realize the above actions is a well - known and commonly used technology in the art. Those skilled in the art can design the corresponding mechanical structure according to the action requirements to realize the above functions.

[0022] The beneficial effects of the present invention are: using the joint conversion device to automatically realize the conversion between the drill rod and the anchor rod without manual intervention, using one rock drill to complete drilling and installing the anchor rod, saving space, improving work efficiency, and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the overall view of the present invention in the using state;

[0024] Figure 2 is the schematic diagram of the tunnel anchor rod trolley of the present invention;

[0025] Figure 3 Schematic diagram of the local magnification of the present invention;

[0026] Figure 4 Schematic diagram of the present invention;

[0027] Figure 5 Schematic diagram of the split-set anchor bolt in the first embodiment of the present invention;

[0028] Figure 6 Schematic diagram of the adapter in the first embodiment of the present invention;

[0029] Figure 7 Schematic diagram of the resin anchor bolt in the second embodiment of the present invention;

[0030] Figure 8 Schematic diagram of the adapter in the second embodiment of the present invention;

[0031] In the figure: rock drill 1, joint conversion device 2, bolt bin 3, arm rotation device 4, bolt 5, slideway 6, orienting body 7, drill rod 8, propulsion oil cylinder 9, compensation oil cylinder 10, limit plate 11, output shaft 1-1 of the rock drill, plug-in slot 1-3, ejector rod 2-1, connecting plate 2-2, swing frame 2-3, compression spring 2-4, rocker arm 2-5, nut 2-6, screw rod 2-7, pin shaft 2-8, tension spring 2-9, adapter 2-10, lever 2-11, bottom plate support 2-12, swing hole 2-13, front end cone 2-14, rear end cylinder 2-15, front end cylinder 2-16, inner hole 2-17, pusher 4-16, split-set anchor bolt 501, resin anchor bolt 502. Specific embodiments

[0032] The present invention will be further described below with reference to the accompanying drawings and through embodiments.

[0033] A joint conversion device for a rock drill to convert between a rock bolt and a drill rod includes a swing telescopic mechanism and a conversion joint 2-10. The swing telescopic mechanism drives the conversion joint 2-10 to expand and swing. The front end of the conversion joint 2-10 is provided with a rock bolt positioning head, and the rear end is provided with a lever 2-11. The swing telescopic mechanism includes a push rod 2-1, a connecting plate 2-2, a swing frame 2-3, a compression spring 2-4, a rocker arm 2-5, a screw rod 2-7, a tension spring 2-9 and a bottom plate bracket 2-12. The bottom plate bracket 2-12 is fixed on the bottom plate of the rock drill. The swing frame 2-3 is arranged on the bottom plate bracket 2-12. The bottom plate bracket 2-12 is provided with a swing hole 2-13. The screw rod 2-7 passes through the swing hole 2-13 and can swing in the swing hole 2-13. One end of the screw rod 2-7 is provided with a tension spring 2-9, and the other end is connected to the push rod 2-1 through the connecting plate 2-2. One end of the push rod 2-1 abuts against the limit plate 11 of the rock drill, and the other end is connected to one end of the rocker arm 2-5 in the swing frame 2-3. A compression spring 2-4 is arranged inside the outer sleeve of the rocker arm 2-5. The other end of the rocker arm 2-5 is connected to the conversion joint 2-10.

[0034] The rear end of the conversion joint 2-10 matches the output end 1-1 of the rock drill 1. The structure of the output end 1-1 of the rock drill is: the end is provided with an internal thread hole, and this internal thread matches the external thread at the tail of the drill rod 8 to connect the drill rod 8 with the output end 1-1 of the rock drill. An insertion and extraction card slot 1-3 is provided on the wall of the internal thread hole, and the insertion and extraction card slot 1-3 matches the lever 2-11 at the tail of the conversion joint 2-10 to connect the conversion joint 2-10 with the output end 1-1 of the rock drill.

[0035] The screw rod 2-7 is fastened to the connecting plate 2-2 by a nut 2-6. The tension spring 2-9 is arranged on the pin shaft 2-8 and the screw rod 2-7.

[0036] The rock bolt positioning head at the front end of the conversion joint 2-10 matches the structure of the tail of the rock bolt. According to different rock bolts, different rock bolt positioning heads are used to position the rock bolt 5 on the conversion joint 2-10 and connect the rock bolt 5 to the output end 1-1 of the rock drill through the conversion joint 2-10.

[0037] The rock drill 1 moves on a slideway 6. The slideway 6 is arranged on an orienting body 7. A rock bolt bin 3 is arranged on the orienting body 7. The rock bolt bin 3 is an annular cylinder. Multiple rock bolts 5 are arranged on the inner wall of the annular cylinder of the rock bolt bin 3. The rock bolts 5, the slideway 6 and the drill rod 8 are all arranged along the central axis direction of the annular cylinder of the rock bolt bin 3. The rock drill 1, the slideway 6 and the drill rod 8 are arranged in the rock bolt bin 3. A joint conversion device 2 is provided at the output shaft end of the rock drill 1, and the alternate conversion between the drill rod 8 and the rock bolt 5 on the rock drill 1 is realized through the joint conversion device 2.

[0038] The rock drill 1 is installed on the rock drill base plate, and the rock drill base plate slides on the slideway; a limit plate 11 is provided at the tail of the slideway 6 to limit and block the rock drill 1 on the slideway 6.

[0039] The swing arm 2-5 transmits the rotational force to other mechanisms (such as a manipulator for transferring anchor bolts and drill rods) through the dial 4-16.

[0040] A method for converting a rock drill anchor bolt and a drill rod uses the above-mentioned joint conversion device for conversion.

[0041] The specific steps are as follows:

[0042] In the initial drilling state, an external thread is provided at the tail of the drill rod 8, and an internal thread is provided at the output end 1-1 of the rock drill. The drill rod 8 is connected to the output end 1-1 of the rock drill through the thread.

[0043] Due to the pulling force of the tension spring 2-9, the swing arm 2-5 of the conversion joint 2-10 rotates clockwise to the limit position; the conversion joint 2-10 is located below the rock drill. As the rock drill 1 advances forward, the ejector rod 2-1 gradually separates from the limit plate 11. At the same time, the compression spring 2-4 expands, driving the swing arm 2-5 and the conversion joint 2-10 to move backward, hiding the conversion joint under the rock drill 1.

[0044] The conversion joint 2-10 and the output end 1-1 of the rock drill have both a plug-and-play structure and a plug-and-play card slot; the conversion joint 2-10 has no relation with the drill rod 8, and only plays a role in connecting the output end 1-1 of the rock drill and the anchor bolt together.

[0045] After the drilling is completed, the rock drill 1 retreats to the bottommost position. As the rock drill 1 moves backward, the ejector rod 2-1 contacts the limit plate 11 and starts to push the swing arm 2-5 and the conversion joint 2-10 forward; at this time, the compression spring 2-4 starts to compress until the rock drill 1 retreats to the bottommost position. At this time, the conversion joint 2-10 moves forward to exceed the foremost end of the output end 1-1 of the rock drill.

[0046] The drill rod 8 is rotated by a manipulator and removed from the output end 1-1 of the rock drill; at the same time, the rocker arm 2-5 is toggled to rotate counterclockwise with the adapter 2-10, so that the adapter 2-10 and the output end 1-1 of the rock drill are on the same central axis; the manipulator installs the anchor rod 5 on the anchor rod positioning head of the adapter 2-10. At this time, the output end 1-1 of the rock drill, the adapter 2-10 and the anchor rod 5 are simultaneously on the same central axis. Then, the rock drill 1 is pushed forward and the rotation of the rock drill is turned on to make the output end 1-1 of the rock drill rotate and move forward. As the rock drill 1 moves forward, the ejector rod 2-1 starts to separate from the limit plate 11. At this time, the compression spring 2-4 starts to expand, driving the adapter 2-10 to exert force backward until the tail of the adapter 2-10 is inserted into the threaded hole inside the output end 1-1 of the rock drill. As the output end 1-1 of the rock drill rotates and advances, the shift lever 2-11 coincides with the plug-in slot 1-3 on the output end 1-1 of the rock drill, completing the action of driving the adapter 2-10 to rotate by the output end 1-1 of the rock drill; at this time, the rock drill 1 drives the adapter 2-10 to continue to move forward, completing the combination of the adapter 2-10 and the anchor rod 5; as the rock drill 1 continues to move forward, the installation of the anchor rod is completed.

[0047] Example 1. Refer to the appendix Figure 5 、 6 。

[0048] The split-set anchor rod 501 is used. The tail of the split-set anchor rod 501 is a tube body with a slit. The structure of the matching adapter 2-10 is: the anchor rod positioning head is a front-end cone 2-14, which matches the tail of the split-set anchor rod 501; a shift lever 2-11 is provided on the rear-end cylinder 2-15 of the adapter 2-10, and the shift lever 2-11 matches the plug-in slot 1-3 on the output end 1-1 of the rock drill.

[0049] Example 2. Refer to the appendix Figure 7 、 8 。

[0050] The resin anchor rod 502 is used. The structure of the matching adapter 2-10 is: the anchor rod positioning head is a front-end cylinder 2-16, and the front-end cylinder 2-16 is provided with an inner hole 2-17, and the inner hole 2-17 matches the tail of the resin anchor rod 502. A shift lever 2-11 is provided on the rear-end cylinder 2-15 of the adapter 2-10, and the shift lever 2-11 matches the plug-in slot 1-3 on the output end 1-1 of the rock drill.

Claims

1. A joint conversion device for converting a rock drill's anchor rod and drill rod, characterized in that: It includes a swing telescopic mechanism and a conversion joint (2-10). The swing telescopic mechanism drives the conversion joint (2-10) to expand and swing. The front end of the conversion joint (2-10) is provided with an anchor rod positioning head, and the rear end is provided with a shift lever (2-11); the swing telescopic mechanism includes a push rod (2-1), a connecting plate (2-2), a swing frame (2-3), a compression spring (2-4), a rocker arm (2-5), a screw rod (2-7), a tension spring (2-9) and a bottom plate bracket (2-12); the bottom plate bracket (2-12) is fixed on the bottom plate of the rock drill (1), the swing frame (2-3) is arranged on the bottom plate bracket (2-12), the bottom plate bracket (2-12) is provided with a swing hole (2-13), the screw rod (2-7) passes through the swing hole (2-13) and can swing in the swing hole (2-13); one end of the screw rod (2-7) is provided with a tension spring (2-9), and the other end is connected to the push rod (2-1) through the connecting plate (2-2). One end of the push rod (2-1) abuts against the limit plate (11) of the rock drill (1), and the other end is connected to one end of the rocker arm (2-5) in the swing frame (2-3). There is a compression spring (2-4) inside the outer sleeve of the rocker arm (2-5); the other end of the rocker arm (2-5) is connected to the conversion joint (2-10). The rock drill (1) moves on a slideway (6). The slideway (6) is arranged on a directional body (7). An anchor rod bin (3) is arranged on the directional body (7). The anchor rod bin (3) is an annular cylinder. A plurality of anchor rods (5) are arranged on the inner wall of the annular cylinder of the anchor rod bin (3). The anchor rods (5), the slideway (6) and the drill rod (8) are all arranged along the central axis direction of the annular cylinder of the anchor rod bin (3). The rock drill (1), the slideway (6) and the drill rod (8) are arranged in the anchor rod bin (3); a joint conversion device (2) is provided at the output shaft end of the rock drill (1). Through the joint conversion device (2), the drill rod (8) and the anchor rod (5) are alternately converted on the rock drill (1).

2. The joint conversion device for converting the anchor rod and the drill rod of the rock drill according to claim 1, characterized in that: The rear end of the conversion joint (2-10) matches the rock drill output end (1-1) of the rock drill (1). The structure of the rock drill output end (1-1) is: there is an internal thread hole at the end, and this internal thread matches the external thread at the tail of the drill rod (8) to connect the drill rod (8) and the rock drill output end (1-1) together; there is a plug-in slot (1-3) on the pore wall of the internal thread hole, and the plug-in slot (1-3) matches the shift lever (2-11) at the tail of the conversion joint (2-10) to connect the conversion joint (2-10) and the rock drill output end (1-1) together.

3. The joint conversion device for converting a rock drill from a rock bolt to a drill rod according to claim 1 or 2, characterized in that: The anchor rod positioning head at the front end of the conversion joint (2-10) matches the structure of the anchor rod tail. According to different anchor rods, different anchor rod positioning heads are used to position the anchor rod (5) on the conversion joint (2-10) and connect it to the rock drill output end (1-1) through the conversion joint (2-10).

4. A joint conversion device for converting a rock drill between a rock bolt and a drill rod, as claimed in claim 3, wherein: The bolt is a slotted pipe bolt (501), the tail of the slotted pipe bolt (501) is a pipe body with a slit, and the structure of the matching adapter (2-10) is: the bolt positioning head is a front-end cone (2-14), which matches the tail of the slotted pipe bolt (501); a lever (2-11) is provided on the rear-end cylinder (2-15) of the adapter (2-10), and the lever (2-11) matches the plug-in slot (1-3) on the output end (1-1) of the rock drill.

5. The joint conversion device for converting the anchor rod and the drill rod of the rock drill according to claim 3, characterized in that: The bolt is a resin bolt (502), and the structure of the matching adapter (2-10) is: the bolt positioning head is a front-end cylinder (2-16), an inner hole (2-17) is provided in the front-end cylinder (2-16), and the inner hole (2-17) matches the tail nut of the resin bolt (502); a lever (2-11) is provided on the rear-end cylinder (2-15) of the adapter (2-10), and the lever (2-11) matches the plug-in slot (1-3) on the output end (1-1) of the rock drill.

6. The joint conversion device for converting the rock drill between the anchor rod and the drill rod according to claim 1, characterized in that: The rock drill (1) is installed on the rock drill base plate, and the rock drill base plate slides on the slideway; a limit plate (11) is provided at the tail of the slideway (6) to limit and block the rock drill (1) on the slideway (6).

7. A joint conversion device for converting a rock drill's anchor rod and drill rod, according to claim 1 or 2, characterized in that: The screw rod (2-7) is fastened to the connecting plate (2-2) by a nut (2-6); the tension spring (2-9) is arranged on the pin shaft (2-8) and the screw rod (2-7).

8. A method for converting a rock drill bolt and a drill rod, which uses the joint conversion device defined in any one of claims 1-7 for conversion.

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