Mortar injection system for rock bolting machines

Abstract

To provide a mortar injection system for a rock bolt driving machine allowing injection of a suitable amount of mortar for every rock bolt.SOLUTION: A mortar injection system for a rock bolt driving machine has a rock bolt driving machine 100 having a control panel 7, a mortar pump device 201 for discharging mortar to a mortar injection machine 3, and a mortar pump control panel 202 for controlling the mortar pump device 201. The control panel 7 has injection amount input means 11 for inputting a mortar preset amount, discharge amount calculation means 12 calculating the mortar discharge amount, and mortar amount comparing and checking means 13 for comparing the mortar preset amount with the mortar discharge amount. When the mortar discharge amount exceeds the mortar preset amount, the mortar pump device 201 is stopped.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a mortar injection system for a rock bolt driving machine used in tunnel construction, mine tunnel excavation, and reinforcement soil work. [Background technology]

[0002] Patent Document 1 discloses a drilling device consisting of a drill machine and a boom, and an excavator equipped with a mixing and pumping device that mixes and pumps mortar, etc., as a device for drilling holes to install rock bolts in multiple locations during tunnel construction, etc., and a rock bolt installation process. The rock bolt installation process in Patent Document 1 involves first drilling holes with the drill machine, then pumping mortar from the pump to inject it into the drilled holes, and after the mortar is injected, installing rock bolts in the holes, and repeating this process in sequence. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 5-89591 Summary of the Invention [Problem to be solved by the invention]

[0004] When installing rock bolts in multiple locations, the amount of mortar injected into the drilled holes is usually managed as the total number of rock bolts, but it is often not managed for each individual rock bolt. Therefore, if too much mortar is injected into the drilled holes, the excess mortar will leak out and be wasted. Also, if too little mortar is injected, the rock bolts may not be properly fixed.

[0005] Therefore, the present invention has been made with an eye on the above-mentioned problems, and aims to provide a mortar injection system for a rock bolt installation machine that can inject an appropriate amount of mortar for each rock bolt. [Means for solving the problem]

[0006] One aspect of the present invention is a mortar injection system for a rock bolt driving machine having a rock bolt drilling device that drills rock bolt holes, a rock bolt driving device that drives rock bolts, and a control panel that controls the rock bolt drilling device and the rock bolt driving device, a mortar injection device that injects mortar into the rock bolt holes, a mortar pump device that discharges mortar into the mortar injection device, and a mortar pump control panel that controls the mortar pump device, wherein the control panel has an injection amount input means for inputting a set amount of mortar to be injected into the rock bolt holes, a discharge amount calculation means for calculating the amount of mortar discharged from the mortar pump device, and a mortar amount comparison and evaluation means for comparing an amount based on the set mortar amount with an amount based on the mortar discharge amount, and if the amount based on the mortar discharge amount exceeds the amount based on the set mortar amount, the control panel sends a signal to the mortar pump control panel to stop the mortar pump device, and the mortar pump device stops. [Effects of the Invention]

[0007] According to one aspect of the present invention, it is possible to provide a mortar injection system for a rock bolt driving machine that can inject an appropriate amount of mortar for each rock bolt. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a block diagram of a mortar injection system for a rock bolt driving machine according to an embodiment of the present invention. [Figure 2] 1 is a control block diagram of a mortar injection system for a rock bolt driving machine according to an embodiment of the present invention. [Figure 3]FIG. 1 illustrates a monitor of a mortar injection system for a rock bolting machine according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] In the following detailed description, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, identical or similar parts are designated by identical or similar reference numerals, and redundant explanations will be omitted. The drawings are schematic and may differ from the actual product. Furthermore, the embodiments shown below exemplify devices and methods for embodying the technical concept of the present invention, and the technical concept of the present invention does not specify the materials, structure, arrangement, etc. of component parts as described below. The technical concept of the present invention can be modified in various ways within the technical scope defined by the claims.

[0010] The mortar injection system 300 for a rock bolt driving machine according to this embodiment is a system for drilling rock bolt holes, driving rock bolts, and injecting mortar into the rock bolt holes. The mortar injection system 300 for a rock bolt driving machine comprises a rock bolt driving machine 100 having a rock bolt drilling device 1 for drilling rock bolt holes, a rock bolt driving device 2 for driving rock bolts, and a control panel 7 for controlling the rock bolt drilling device 1 and the rock bolt driving device 2, a mortar injection system for a rock bolt driving machine having a mortar injection machine 3 for injecting mortar into the rock bolt holes, a mortar pump device 201 for discharging mortar to the mortar injection machine 3, and a mortar pump control panel 202 for controlling the mortar pump device 201. This is a mortar injection system for a rock bolt driving machine, in which a control panel 7 has an injection amount input means 11 for inputting a set amount of mortar to be injected into a rock bolt hole, a discharge amount calculation means 12 for calculating the amount of mortar discharged from a mortar pump device 201, and a mortar amount comparison and examination means 13 for comparing the set mortar amount with the mortar discharge amount, and if the mortar discharge amount exceeds the set mortar amount, the control panel 7 sends a signal to a mortar pump control panel 202 to stop the mortar pump device 201, causing the mortar pump device 201 to stop. Below, the details of the mortar injection system for a rock bolt driving machine according to this embodiment will be described with reference to Figures 1 and 2.

[0011] FIG. 1 is a configuration diagram of a mortar injection system for a rock bolt driving machine according to this embodiment, and FIG. 2 is a control block configuration diagram of the mortar injection system for a rock bolt driving machine according to this embodiment. The mortar injection system 300 for a rock bolt driving machine includes a rock bolt driving machine 100 and a mortar loading machine 200. The rock bolt driving machine 100 is a device that drills rock bolt holes and drives rock bolts into the drilled holes in order to drive reinforcing rock bolts into the wall surface of a tunnel or the like. The mortar loading machine 200 is a device that pumps mortar to be injected into the rock bolt holes before driving the rock bolts.

[0012] As shown in Figures 1 and 2, the rock bolt driving machine 100 includes a rock bolt drilling device 1 for drilling rock bolt holes, a rock bolt driving device 2 for driving rock bolts, and a control panel 7 for controlling the rock bolt drilling device 1 and the rock bolt driving device 2. The rock bolt driving device 2 also includes a mortar injector 3. The mortar injector 3 injects mortar pumped from the mortar loading device 200 into the rock bolt holes. The rock bolt driving machine 100 includes a driver's seat 4. The driver's seat 4 is equipped with a monitor 5 for monitoring the operating status of the rock bolt drilling device 1 and the rock bolt driving device 2, a mortar pump operation switch 206 for starting and stopping the mortar pump device 201, and a reset switch 6 for resetting the display on the monitor 5. The rock bolt driving machine 100 also includes a wireless transceiver 9, which transmits and receives signals to and from a wireless transceiver 204 (described later) installed in the mortar loading device 200. The rock bolt driving device 2 also includes a pressure switch 8. The pressure switch 8 is a sensor that operates every time a rock bolt is inserted into a rock bolt hole, and operates when the rock bolt has been completely inserted into the rock bolt hole. In the rock bolt drilling device of this embodiment, the basic operation of starting and stopping the mortar pump device 201 is performed by the operator by operating the mortar pump operation switch 206.

[0013] As shown in FIGS. 1 and 2, the mortar loading machine 200 is equipped with a mortar pump device 201 that discharges mortar to the mortar injector 3. The mortar injector 3 provided in the rock bolt driving device 2 is connected to the mortar pump device 201 by a pressure hose (not shown). The mortar pump device 201 is equipped with a mortar pump motor 203 for driving it, a mortar pump control panel 202 that controls the mortar pump device 201, a converter 205, and a wireless transceiver 204. A rotation sensor 207 that detects the number of rotations of the shaft of the mortar pump motor 203 is attached to the shaft of the mortar pump motor 203. The mortar pump motor 203 is also equipped with a timer 208 that measures the operating time of the mortar pump motor 203. The converter 205 converts signals sent from the mortar pump control panel 202, the rotation sensor 207, and the timer 208 and transmits them to the wireless transceiver 204, and also converts signals sent from the wireless transceiver 204 and transmits them to the mortar pump control panel 202. The mortar pump control panel 202 starts the mortar pump motor 203 based on an operation start signal sent from the rock bolt driving machine 100 when a mortar pump operation switch 206 installed on the rock bolt driving machine 100 is turned ON, and stops the mortar pump motor 203 based on a stop signal sent from the rock bolt driving machine 100. The wireless transceiver 204 transmits and receives signals to and from the wireless transceiver 9 of the rock bolt driving machine 100.

[0014] During the work of driving rock bolts, a mortar loading machine 200 equipped with a mortar pump device 201 is installed near the rock bolt driving machine 100. After a rock bolt hole is drilled by the rock bolt drilling device 1, mortar is injected into the drilled rock bolt hole using a mortar injection machine 3 provided on the rock bolt driving device 2. After the mortar injection, a rock bolt is installed in the rock bolt hole into which the mortar has been injected using the rock bolt driving device 2.

[0015] Next, using Figure 2, we will explain the control block of the mortar injection system for the rock bolting machine.

[0016] The driver's seat 4 of the rock bolt driving machine 100 is equipped with a monitor 5, a mortar pump operation switch 206, and a reset switch 6. The monitor 5 is equipped with an injection amount input means 11 for inputting the amount of mortar to be injected into one rock bolt hole. The injection amount input means 11 is a software switch that can be input directly from the screen of the monitor 5, but the injection amount input means 11 may also be a hardware switch provided separately from the monitor 5. The monitor 5 is also equipped with a mortar injection amount display unit 210 that displays the mortar discharge amount of mortar injected by the mortar injection machine 3. The mortar injection amount displayed on the mortar injection amount display unit 210 is reset by the reset switch 6.

[0017] A control panel 7 provided in the rock bolt driving machine 100 controls the rock bolt driving machine 100. The control panel 7 is equipped with a discharge rate calculation means 12, a mortar rate comparison and examination means 13, and a memory means 14. The discharge rate calculation means 12 calculates the mortar discharge rate to be injected by the mortar injection machine 3 based on the shaft rotation speed of the mortar pump motor 203 sent from the mortar loading machine 200. A calculation formula for calculating the mortar discharge rate to be injected by the mortar injection machine 3 is stored in the memory means 14. The calculation can be performed using the shaft rotation speed of the mortar pump motor 203 and the unit discharge rate. The mortar discharge rate may also be calculated based on the operating time of the mortar pump motor 203 sent from the mortar loading machine 200. When based on the operating time of the mortar pump motor 203, it can be obtained by multiplying the operating time of the mortar pump motor 203 by a predetermined coefficient. The mortar amount comparison means 13 compares the set mortar amount input from the injection amount input means 11 provided in the monitor 5 with the mortar discharge amount calculated by the discharge amount calculation means 12. The set mortar amount is set based on the drilled hole diameter and drilled hole length of the rock bolt hole, the rock bolt shape, etc. The unit discharge amount is the mortar discharge amount per minute of the mortar pump device 201. The predetermined coefficient multiplied by the operating time of the mortar pump motor 203 is determined in advance from the operating time of the mortar pump motor and the mortar discharge amount of the mortar pump device 201.

[0018] The discharge rate calculation means 12 outputs the calculated mortar discharge rate and transmits it to the monitor 5. The mortar injection rate display unit 210 of the monitor 5 displays the mortar discharge rate transmitted from the discharge rate calculation means 12. This allows the operator to grasp the injection rate of mortar being injected into one rock bolt hole. The mortar rate comparison means 13 outputs a stop signal to stop the mortar pump device 201 when the mortar discharge rate calculated by the discharge rate calculation means 12 exceeds the set mortar rate input from the injection rate input means 11. In this embodiment, the mortar pump device 201 is stopped by the operator operating the mortar pump operation switch 206. Therefore, if the mortar pump operation switch 206 is operated and the mortar pump device 201 is stopped when the mortar discharge rate is less than the set mortar rate, the control panel 7 displays a warning on the monitor 5 that the mortar pump device 201 has stopped when the mortar discharge rate is less than the set mortar rate.

[0019] Next, the injection of mortar into the rock bolt holes by the mortar injection system 300 according to this embodiment will be described.

[0020] First, the operator sets the mortar injection machine 3 in the drilled rock bolt hole. Next, the operator inputs the set amount of mortar using the injection amount input means 11 of the monitor 5 and turns on the mortar pump operation switch 206. When the operator turns on the mortar pump operation switch 206, an operation start signal is sent to the control panel 7. Upon receiving the operation start signal, the control panel 7 transmits the signal to the wireless transceiver 9, which then transmits an operation start signal to the wireless transceiver 204 of the mortar loading machine 200. The operation start signal sent from the rock bolt driving machine 100 is sent to the mortar pump control panel 202 via the wireless transceiver 204 and converter 205. Upon receiving the operation start signal, the mortar pump control panel 20 transmits an operation start signal to the mortar pump motor 203, which starts. When the mortar pump motor 203 starts, mortar is injected from the mortar injection machine 3 into the rock bolt hole. To stop the injection of mortar into the rock bolt hole, the operator visually checks the condition of the mortar being injected into the rock bolt hole, and when he determines that sufficient mortar has been injected into the rock bolt hole, he operates the mortar pump operation switch 206 to stop the injection of mortar.

[0021] The set amount of mortar input from the injection amount input means 11 is transmitted to the control panel 7. The rotation speed of the shaft of the mortar pump motor 203 transmitted from the mortar loading machine 200 is also transmitted to the control panel 7. The discharge amount calculation means 12 of the control panel 7 calculates the amount of mortar discharged from the mortar pump device 201 based on the rotation speed of the shaft of the mortar pump motor 203 using a calculation formula stored in the storage means 14. The discharge amount calculation means 12 outputs the calculated mortar discharge amount to the monitor 5. The calculated mortar discharge amount is displayed on the mortar injection amount display unit 210 of the monitor 5. This allows the operator to understand the amount of mortar being injected into the rock bolt hole. The operator stops the injection of mortar into the rock bolt hole by visually checking the state of the mortar being injected into the rock bolt hole, but the mortar injection amount displayed on the mortar injection amount display unit 210 allows the operator to refer to it as a guide for when to stop the injection.

[0022] The mortar amount comparison means compares the set mortar amount input from the injection amount input means 11 with the mortar discharge amount calculated by the discharge amount calculation means 12. If the mortar discharge amount calculated by the discharge amount calculation means 12 exceeds the set mortar amount input from the injection amount input means 11, the control panel 7 transmits a stop signal to the wireless transceiver 9 to stop the mortar pump device 201. The wireless transceiver 9 transmits the stop signal to the wireless transceiver 204 of the mortar loading machine 200. The wireless transceiver 204 receives the stop signal transmitted from the rock bolt driving machine 100 and transmits the stop signal to the converter 205. The stop signal is transmitted to the mortar pump control panel 202 via the converter 205. The mortar pump control panel 202 receives the stop signal and transmits a stop signal to the mortar pump motor 203, causing the mortar pump motor 203 to stop. The operator stops the injection of mortar into the rock bolt hole by operating the mortar pump operation switch 206. However, if the rock bolt hole is connected to a cavity formed in the ground during tunnel construction, for example, mortar may also be injected into the cavity. As a result, more mortar than the intended amount may be injected into the rock bolt hole. In such cases, the operator cannot visually determine whether sufficient mortar has been injected into the rock bolt hole. However, in this embodiment, the mortar injection amount is displayed on the mortar injection amount display unit 210, allowing the operator to use this as a guide for when to stop injection. This allows the appropriate amount of mortar to be injected into each rock bolt hole. Furthermore, in this embodiment, if the mortar discharge amount calculated by the discharge amount calculation means 12 exceeds the mortar set amount input from the injection amount input means 11, the control panel 7 stops the mortar pump device 201. This prevents more mortar than necessary from being injected into the rock bolt hole.

[0023] In the mortar injection system 300 of this embodiment, the rock bolt driving machine 100 is equipped with the mortar injector 3, but the mortar loading machine 200 may be equipped with the mortar injector 3 instead of the rock bolt driving machine 100. Furthermore, in the mortar injection system 300 of this embodiment, the amount of mortar discharged from the mortar pump device 201 is calculated based on the number of rotations of the shaft of the mortar pump motor 203, but the amount of mortar discharged from the mortar pump device 201 may be calculated based on the operating time of the mortar pump motor 203. Furthermore, the mortar injection system 300 of this embodiment has an injection amount input means 11 for inputting a set amount of mortar to be injected into the rock bolt hole, a discharge amount calculation means 12 for calculating the amount of mortar discharged from the mortar pump device 201, and a mortar amount comparison and examination means 13 for comparing the set mortar amount with the mortar discharge amount, and if the mortar discharge amount exceeds the set mortar amount, the control panel 7 sends a signal to the mortar pump control panel 202 to stop the mortar pump device 201, and the mortar pump device 201 stops, but this is not necessarily limited to this. When comparing the set mortar amount with the mortar discharge amount, the set mortar amount and the mortar discharge amount are amounts based on the set mortar amount input from the injection amount input means 11, and may also be amounts based on the mortar discharge amount calculated by the discharge amount calculation means 12. By doing this, the mortar pump device 201 can be stopped before the set amount of mortar input from the injection amount input means 11 is reached, or the mortar pump device 201 can be stopped after an amount of mortar greater than the set amount of mortar input from the injection amount input means 11 has been discharged.

[0024] Although the present invention has been described above with reference to a limited number of embodiments, the scope of the invention is not limited thereto, and modifications of the embodiments based on the above disclosure will be obvious to those skilled in the art. [Explanation of symbols]

[0025] 1...Rock bolt drilling device, 2...Rock bolt driving device, 3...Mortar injection machine, 4...Driver's seat, 5...Monitor, 6...Reset switch, 7...Control panel, 8...Pressure switch, 9...Wireless transceiver, 11...Injection amount input means, 12...Discharge amount calculation means, 13...Mortar amount comparison and examination means, 100...Rock bolt driving machine, 200...Mortar loading machine, 201...Mortar pump device, 202...Mortar pump control panel, 203...Mortar pump motor, 204...Wireless transceiver, 205...Converter, 206...Mortar pump operation switch, 207...Rotation sensor, 208...Timer, 210...Mortar injection amount display unit, 300...Mortar injection system

Claims

1. A rock bolt driving machine including a rock bolt drilling device that drills rock bolt holes, a rock bolt driving device that drives rock bolts, and a control panel that controls the rock bolt drilling device and the rock bolt driving device; a mortar injection machine that injects mortar into the rock bolt hole; a mortar pump device that discharges mortar to the mortar injection machine; a mortar pump control panel for controlling the mortar pump device; A mortar injection system for a rock bolting machine, comprising: The control panel has an injection amount input means for inputting a set amount of mortar to be injected into the rock bolt hole, a discharge amount calculation means for calculating the amount of mortar discharged from the mortar pump device, and a mortar amount comparison and examination means for comparing an amount based on the set amount of mortar with an amount based on the mortar discharge amount, A mortar injection system for a rock bolt driving machine, characterized in that if the amount based on the mortar discharge amount exceeds the amount based on the mortar set amount, the control panel sends a signal to the mortar pump control panel to stop the mortar pump device, and the mortar pump device stops.

2. The rock bolt driving machine is provided with a monitor in an operator's cab for monitoring the operating status of the rock bolt drilling device and the rock bolt driving device, 2. The mortar injection system for a rock bolt driving machine according to claim 1, wherein the monitor displays the amount of mortar discharged from the mortar pump device.

3. The rock bolt driving machine is provided with a mortar pump operation switch in the driver's cab for starting and stopping the operation of the mortar pump device, A mortar injection system for a rock bolt driving machine as described in claim 2, characterized in that if the mortar pump device stops operating when the amount based on the mortar discharge amount is less than the amount based on the set mortar amount due to operation of the mortar pump operation switch, the control panel instructs the monitor to display a warning that the mortar pump device has stopped operating when the amount based on the mortar discharge amount is less than the amount based on the set mortar amount.

4. the mortar pump device has a mortar pump motor for driving the mortar pump device, A mortar injection system for a rock bolt driving machine described in any one of claims 1 to 3, characterized in that the mortar discharge volume is calculated by multiplying the operating time of the mortar pump motor by a predetermined coefficient obtained from the operating time of the mortar pump motor and the mortar discharge volume of the mortar pump device.

5. the mortar pump device includes a mortar pump motor for driving the mortar pump device and a rotation speed sensor for detecting the rotation speed of the mortar pump motor, A mortar injection system for a rock bolt driving machine as described in any one of claims 1 to 3, characterized in that the mortar discharge amount is calculated based on the rotation speed from the rotation speed sensor and the discharge amount per rotation speed.

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