Tunnel drilling equipment

Abstract

Tunnel drilling equipment belongs to the technical field of drilling equipment and comprises an electric drill body, a carrying table, a temperature detection circuit, a motor speed reducing mechanism, a jacking mechanism, a positioning mechanism, a cooling mechanism and a limiting mechanism, the jacking mechanism is mounted on the periphery of the upper end of the carrying table, and the motor speed reducing mechanism is mounted at the upper end of the carrying table; a supporting plate is mounted at the front side end of a rotating shaft of the motor reducing mechanism; the jacking mechanism is mounted on the supporting plate; the lower end of the electric drill body is mounted on the jacking mechanism; the cooling mechanism and the electric drill body are mounted together; the limiting mechanism is installed at the front upper end of the carrying table, and the temperature detection circuit is installed in the element box. The drill bit can be cooled, and the service life of the drill bit is prolonged; equipment can be effectively fixed to a drilling station, the drilling quality and efficiency are improved, the angle of a drill bit can be adjusted, and the working range of the equipment is larger; and when the temperature of the electric drill body abnormally rises, the alarm prompts a worker in time through the buzzer, so that the probability that the motor of the electric drill body is damaged due to over-high temperature is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction equipment, in particular to a tunnel drilling device. Background Art

[0002] Small tunnel post-construction drilling equipment is mainly used for drilling operations in tunnel construction, especially in tunnel post-maintenance, installation of electrical and reinforcement equipment. The existing tunnel post-construction drilling equipment generally includes an electric drive or manually propelled vehicle body, an electric drill (including hollow drill bits and solid drill bits), etc. When working, the staff operates the equipment to the working area, and then controls the electric drill to rise or fall to achieve the purpose of drilling (some drilling equipment, and some staff stand at a high place and hold the electric drill to perform drilling operations).

[0003] Although the existing drilling equipment for small tunnels has met the construction needs to a certain extent, it is limited by the structure and still has the following technical problems. First, the drill bit of the electric drill cannot be cooled and is kept at a high temperature for a long time, which can easily cause the drill bit to become less hard, thereby reducing the wear resistance and shortening the service life, which will have an adverse effect on the drilling work. Second, when drilling, the carrier on which the electric drill is installed and the side end of the drilling part do not have a fixed limit function. In this way, the equipment carrier or the electric drill is prone to shaking during drilling, which will have an adverse effect on the drilling work. Third, it generally does not have a steering function, that is, drilling operations can only be performed in the vertical direction. This is inconvenient when it is necessary to drill holes in the tunnel in an oblique direction. Summary of the invention

[0004] In order to overcome the drawbacks of the existing small tunnel later construction drilling equipment as described in the background technology due to structural limitations, the present invention provides a tunnel drilling equipment that can cool the drill bit in real time under the joint action of relevant mechanisms, thereby reducing the probability of the drill bit overheating and performance deterioration, and increasing the service life of the drill bit. During drilling, the equipment can be effectively fixed at the drilling station, thereby improving the drilling quality and efficiency. The angle of the drill bit can also be adjusted as needed, and the equipment has a larger working range and brings convenience to the staff.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A tunnel drilling device, comprising a drill body, a carrier, a temperature detection circuit, a motor reduction mechanism, and further having a jacking mechanism, a positioning mechanism, a cooling mechanism, and a limiting mechanism; there are multiple sets of the jacking mechanism, and each set of the jacking mechanism includes an electric push rod and a top plate. The top plate is fixedly installed on the movable column of the electric push rod. The lower ends of the electric push rod cylinders of multiple sets of the jacking mechanism are respectively fixedly installed around the upper end of the carrier. The motor reduction mechanism is longitudinally fixedly installed in the middle of the upper end of the carrier, and a fixing plate is installed at the front side end of the rotating shaft of the motor reduction mechanism; a support plate is installed at the upper end of the fixing plate. The jacking mechanism includes an electric push rod A, a linear bearing, and an upper plate. The lower end of the cylinder of the electric push rod A is fixedly installed on the upper end of the support plate, and the lower end of the bushing of the linear bearing is installed on the support plate; the lower end of the upper plate is fixedly installed on the upper end of the bearing rod of the linear bearing and the upper end of the movable column of the electric push rod A. The lower end of the housing of the drill body is vertically and fixedly installed on the upper end of the upper plate; the cooling mechanism includes an outer sleeve pipe and a bearing. The lower end of the outer sleeve pipe is fixedly installed outside the upper end of the housing of the drill body, and the outer ring of the bearing is installed inside the upper end of the outer sleeve pipe. The lower end of the drill bit of the drill body is hermetically installed inside the inner ring of the bearing; water inlet pipes and water outlet pipes are respectively installed at both side ends of the outer sleeve pipe. The water inlet pipe is connected to the tap water pipe, and the water outlet pipe is connected to the waste water pipe; the limiting mechanism includes an electric push rod B and a braking housing. The middle outside of the lower end of the braking housing is installed on the movable column of the electric push rod B. The lower end of the cylinder of the electric push rod B is fixedly installed on the front upper end of the carrier, and the upper end of the braking housing is located at the lower end of the rotating shaft of the motor reduction mechanism; the temperature detection circuit is installed in the component box.

[0006] Further, when the movable columns of the multiple sets of electric push rods are at the upper dead center, the upper end height of the top plate is higher than the height of the drill bit of the drill body.

[0007] Further, wheels are installed at the lower end of the carrier.

[0008] Further, the temperature detection circuit includes a temperature control switch, a resistor, a triode, and a buzzer that are electrically connected. The signal output end of the temperature control switch is connected to one end of the first resistor. The other end of the first resistor is connected to one end of the second resistor and the base of the triode. The negative power input end of the temperature control switch is connected to the emitter of the triode and the other end of the second resistor. The collector of the triode is connected to the negative power input end of the buzzer. The positive power input end of the temperature control switch is connected to the positive power input end of the buzzer.

[0009] Further, the detection head of the temperature control switch is fixedly installed outside the outer end of the motor housing.

[0010] The beneficial effects of the present invention compared with the prior art are as follows: (1) Based on the electric drill body, the platform with mobile wheels, etc., the cooling mechanism can cool the drill bit in real time. In this way, the probability of the drill bit overheating and deteriorating in performance is reduced, and the service life of the drill bit is improved; (2) During drilling, the positioning mechanism can effectively fix the equipment at the drilling station, improving the drilling quality and efficiency. The angle of the drill bit can also be adjusted as needed through the motor reduction mechanism. The working range of the equipment is larger, which brings convenience to the staff; (3) The temperature detection circuit can promptly alarm through the buzzer to remind the staff when the temperature of the electric drill body rises abnormally, reducing the probability of the motor of the electric drill body being damaged due to excessive temperature. In summary, the present invention has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below in conjunction with the drawings and embodiments.

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 It is a circuit diagram of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] Figure 1 、 2As shown in the figure, a tunnel drilling device includes an electric drill body M1, a platform 1 with moving wheels, a power supply module U1, a power switch, a motor reduction mechanism M2, and also has a jacking mechanism, a positioning mechanism, a cooling mechanism, a limiting mechanism, and a temperature detection circuit 14; there are four sets of the jacking mechanism, and each set of the jacking mechanism includes an electric push rod M3 and a top plate 2. The top plate 2 is fixedly installed on the movable column of the electric push rod M3. The lower ends of the cylinders of the electric push rods M3 of the four sets of positioning mechanisms are respectively fixedly installed around the upper end of the platform 1. The motor reduction mechanism M2 is longitudinally fixedly installed in the middle of the upper end of the platform 1, and a fixing plate 3 is welded to the front side end of the rotating shaft of the motor reduction mechanism M2; a supporting plate 4 is welded to the upper end of the fixing plate 3. The positioning mechanism includes an electric push rod AM4, a linear bearing 5 (for guiding), and an upper plate 6. The lower end of the cylinder of the electric push rod AM4 is fixedly installed in the middle of the upper end of the supporting plate 4. There are at least two sets of linear bearings 5, and the lower ends of the bushings of the two sets of linear bearings 5 are respectively welded to the left and right sides of the upper end of the supporting plate 4; the lower end of the upper plate 5 is fixedly installed on the upper ends of the bearing rods of the two sets of linear bearings 5 and the upper end of the movable column of the electric push rod AM4. The lower end of the housing of the electric drill body M1 is vertically fixedly installed in the middle of the upper end of the upper plate 6; the cooling mechanism includes an outer sleeve 7 and a bearing 8. The lower end of the outer sleeve 7 is hermetically fixedly installed outside the upper end of the housing of the electric drill body M1. The outer ring of the bearing 8 is hermetically sleeved inside the upper end of the outer sleeve 7. The lower end of the drill bit 9 of the electric drill body is hermetically sleeved inside the inner ring of the bearing 8. A sealing rubber ring (to prevent water from escaping) is installed between the inner and outer rings at the upper end of the bearing 8; a water inlet pipe 71 and a water outlet pipe 72 that communicate with its interior are welded to the right and left outer sides of the outer sleeve respectively. The outer side of the water inlet pipe 71 is connected to the tap water pipe in series through a hose 10 via a valve, and the water outlet pipe 72 is connected to the waste water tank through another hose; the limiting mechanism includes an electric push rod BM5 and an arc-shaped brake housing 11. The outer middle part of the lower end of the brake housing 11 is welded to the movable column of the electric push rod BM5. The lower end of the cylinder of the electric push rod BM5 is fixedly installed at the front upper end of the platform 1, and the upper end of the brake housing 11 is located at the lower end of the rotating shaft of the motor reduction mechanism M2; the power input end of the electric drill body M1 is connected in series through a power switch S1, and the power input ends 1 and 2 of the power supply module U1 are respectively connected to the two poles of the AC 220V power supply through wires. The power output ends 3 and 4 of the power supply module U1 are respectively connected to the power input ends 1 and 2 of four other power switches S2, S3 (with four), S4, and S5. The power input ends 1 and 2 of the temperature control switch U2 are respectively connected through wires. The power output ends 3 and 4, 5 and 6 of the power switches S2, S3, S4, and S5 are respectively connected to the power input ends of the motor reduction mechanism M2, four sets of electric push rods M3 (each is equipped with a power switch S3), the positive and negative and negative and positive power input ends of the electric push rod AM4 and the electric push rod BM5 through wires.

[0015] Figure 1 , 2As shown, when the movable columns of the four sets of electric push rods M3 are at the top dead center, the upper end height of the top plate 2 is higher than the drill bit height of the electric drill body M1. A universal wheel with a braking function is installed around the lower end of the carrier table, and the wheels can also be driven electrically. The temperature detection circuit includes a temperature control switch U2, resistors R1 and R2, a triode Q1, and a buzzer B1 connected by circuit board wiring. The signal output terminal 3 of the temperature control switch U2 is connected to one end of the resistor R1. The other end of the resistor R1 is connected to one end of the resistor R2 and the base of the triode Q1. The negative power input terminal 2 of the temperature control switch U2 is connected to the emitter of the triode Q1 and the other end of the resistor R2. The collector of the triode Q1 is connected to the negative power input terminal of the buzzer B1. The positive power input terminal 1 of the temperature control switch U1 is connected to the positive power input terminal of the buzzer B1. The detection head 12 of the temperature control switch is closely attached to the motor housing of the electric drill body. The power supply module, the temperature detection circuit 14, and the power switch are installed in the component box 13.

[0016] Figure 1 , 2As shown, the present invention is based on a drill body M1, a carrier 1 with moving wheels, etc., and can be conveniently displaced to the operation area in the tunnel. After the staff turns on the power input terminal of the power switch S1, the drill body M1 is powered on and its drill bit drills the operation area. After the 220V power supply enters the power input terminal of the power module U1, its pins 3 and 4 output a stable DC 24V power supply and enter the power input terminal of the power switch and temperature detection circuit. During operation, after the staff toggles the handle of the power switch S2 to the left or right, the pins 1 and 2 and pins 3 and 4 or pins 5 and 6 of the power switch S2 are respectively connected. In this way, the rotating shaft of the motor reduction mechanism M2 drives the drill body M1 to turn left or right to an appropriate angle (within 180 degrees), and the drill body M1 can conveniently drill the relevant angular areas in the tunnel. When the drill body M1 turns to the in-place position, the staff toggles the handle of the power switch S5 to the left or right. In this way, the pins 1 and 2, pins 3 and 4, and pins 5 and 6 of the power switch S5 are respectively connected. Furthermore, the movable column of the electric push rod BM5 will move up or down. When the movable column of the electric push rod BM5 moves up to the stop point, the upper end of the brake housing 11 contacts the rotating shaft of the drill body M1. In this way, during operation, the rotating shaft of the drill body M1 can play a fixing role to prevent the rotating shaft of the drill body M1 from vibrating and displacing during the operation of the motor and driving the drill body to displace, resulting in the drill body M1 being unable to work properly (when the movable column of the electric push rod BM5 moves down to the stop point, the upper end of the brake housing 11 no longer contacts the rotating shaft of the drill body M1, and in this way, the drill body M1 can work normally again). When the device is in the working position, the staff toggles the handles of the four power switches S3 to the left or right respectively. The pins 1 and 2 and pins 3 and 4 or pins 5 and 6 of one or more of the power switches S3 are respectively connected. In this way, the movable columns of one or more sets of electric push rods M3 will move up or down; when the movable columns of one or more sets of electric push rods M3 move up to the stop point, the upper top plates 2 of the movable columns of one or more sets of electric push rods M3 will contact the inner top of the tunnel. In this way, because the upper parts of the top plates 2 of one or more sets of electric push rods M3 contact the inner top of the tunnel, they can play a good fixing role for the tunnel (the lower end of the carrier and the upper end of the top plate 2 are respectively in close contact with the ground and the inner top of the tunnel, which can make the upper and lower ends of the carrier be firmly fixed in the operation area and will not displace during operation). After toggling the handle of the power switch S4 to the left or right, the pins 1 and 2 and pins 3 and 4 or pins 5 and 6 of the power switch S4 are respectively connected. In this way, the positive and negative or negative and positive power input terminals of the electric push rod AM3 will be powered on. After the positive and negative power input terminals of the electric push rod AM3 are powered on, its movable column pushes the drill body to continuously move up to drill the relevant positions in the tunnel. After the negative and positive power input terminals of the electric push rod AM3 are powered on, its movable column drives the drill body to move down to complete the drilling operation of the relevant positions in the tunnel.

[0017] Figure 1 , 2As shown, when the temperature of the motor of the electric drill body does not exceed the standard during operation (for example, lower than 50 °C), the voltage signal output from pin 3 of the temperature control switch U1 is relatively low. This voltage signal is divided by resistors R1 and R2 and enters the base of the triode Q1, which is lower than 0.7V. The triode Q1 is cut off. Then, the buzzer B1 will not be powered on to sound, indicating that the motor temperature does not exceed the standard. When the temperature of the motor of the electric drill body exceeds the standard during operation (for example, higher than 50 °C), the voltage signal output from pin 3 of the temperature control switch U1 is relatively high. This voltage signal is divided by resistors R1 and R2 and enters the base of the triode Q1, which is higher than 0.7V. The triode Q1 conducts, and the collector outputs a low level and enters the negative power input terminal of the buzzer B1. Then, the buzzer B1 will be powered on to sound, indicating that the motor temperature exceeds the standard. In the present invention, when the staff opens the valve during operation, tap water will enter the outer sleeve 1 through the water inlet pipe 71, and the water entering the outer sleeve cools the drill bit of the electric drill body.

[0018] Figure 1 , 2 As shown above, the cooling mechanism of the present invention can cool the drill bit in real time. In this way, the probability of the drill bit overheating and its performance deteriorating is reduced, and the service life of the drill bit is improved; during drilling, the positioning mechanism can effectively fix the equipment at the drilling station, improving the drilling quality and efficiency. The angle of the drill bit can also be adjusted as needed through the motor reduction mechanism, expanding the working range of the equipment and bringing convenience to the staff; the temperature detection circuit can promptly alarm through the buzzer to notify the staff when the temperature of the electric drill body abnormally rises, reducing the probability of the motor of the electric drill body being damaged due to excessive temperature; due to the presence of the limit mechanism, it can prevent the displacement of the electric drill body and make the operation more stable. Figure 2 In this case, the resistance values of resistors R1 and R2 are 10K and 2.3K respectively; the model of the triode Q1 is 9013; the electric push rod, electric push rod A, and electric push rod B are finished products of reciprocating electric telescopic rods; the power of the motor reduction mechanism is 2KW; the power of the electric drill body is 5KW; the power supply module U1 is a finished product of an AC 220V to DC 24V switching power supply module; the buzzer B1 is a finished product of an active continuous sound buzzer alarm of model FM24V.

[0019] The above shows and describes the basic principles, main features, and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

[0020] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tunnel drilling device, comprising an electric drill body, a carrier, and a motor reduction mechanism, characterized in that: It also has a lifting mechanism, a positioning mechanism, a cooling mechanism, a limit mechanism, and a temperature detection circuit; there are multiple sets of lifting mechanisms, each of which includes an electric push rod and a top plate, the top plate is fixedly mounted on the movable column of the electric push rod, the lower ends of the electric push rod cylinders of the multiple lifting mechanisms are respectively fixedly mounted around the upper end of the platform, the motor reduction mechanism is longitudinally fixedly mounted in the middle of the upper end of the platform, and a fixed plate is installed at the front side end of the rotating shaft of the motor reduction mechanism; a support plate is installed at the upper end of the fixed plate, the lifting mechanism includes an electric push rod A, a linear bearing, and an upper plate, the lower end of the cylinder of the electric push rod A is fixedly mounted on the upper end of the support plate, and the lower end of the sleeve of the linear bearing is mounted on the support plate; the lower end of the upper plate is fixedly mounted on the upper end of the bearing rod of the linear bearing and the electric push rod A is disposed at the upper end of the movable column of the electric drill body, and the lower end of the shell of the electric drill body is vertically distributed and fixedly installed on the upper end of the upper plate; the cooling mechanism includes an outer sleeve and a bearing, the lower end of the outer sleeve is fixedly installed outside the upper end of the shell of the electric drill body, the outer ring of the bearing is installed in the upper end of the outer sleeve, and the lower end of the drill bit of the electric drill body is sealed and installed in the inner ring of the bearing; the two side ends of the outer sleeve are respectively installed with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected to the tap water pipe, and the water outlet pipe is connected to the waste water pipe; the limiting mechanism includes an electric push rod B and a brake shell, the middle part of the lower end of the brake shell is installed on the movable stay of the electric push rod B, the lower end of the cylinder of the electric push rod B is fixedly installed on the front upper end of the carrier, and the upper end of the brake shell is located at the lower end of the rotating shaft of the motor reduction mechanism; the temperature detection circuit is installed in the component box.

2. A tunnel boring device according to claim 1, characterized in that: When the movable columns of the multiple sets of electric push rods are located at the upper dead points, the upper end height of the top plate is higher than the drill bit height of the electric drill body.

3. A tunnel boring device according to claim 1, characterized in that: Wheels are installed at the lower end of the platform.

4. A tunnel boring device according to claim 1, characterized in that: The temperature detection circuit includes an electrically connected temperature-controlled switch, a resistor, a transistor and an alarm. The signal output end of the temperature-controlled switch is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor and the base of the transistor, the negative power supply input end of the temperature-controlled switch is connected to the emitter of the transistor and the other end of the second resistor, the collector of the transistor is connected to the negative power supply input end of the alarm, and the positive power supply input end of the temperature-controlled switch is connected to the positive power supply input end of the alarm.

5. A tunnel boring device according to claim 4, characterized in that: The detection head of the temperature control switch is fixedly installed on the outer end of the motor housing.

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