Amphibious electric drill and electric mechanism

Abstract

The amphibious electric drill and electric mechanism comprises an electric assembly and a drilling assembly, the electric assembly comprises a motor and an outer shell, the motor is installed in the outer shell, the drilling assembly comprises a drill chuck and a drill bit, and the rear end of the drill chuck is in transmission connection with a transmission shaft of the motor penetrating through the front end of the outer shell. The drill bit is arranged at the front end of the drill chuck, and the motor is an oil immersed motor. According to the amphibious electric drill and the electric mechanism, the oil immersed motor is adopted as a driving motor to form the electric mechanism, underwater normal use is achieved according to the waterproof performance of the motor, the electric drill is formed by arranging the electric drilling assembly, underwater drilling can be achieved, and cutting can be achieved by matching a series of drilling holes with hammering and knocking.

Description

Technical Field

[0001] The utility model relates to the technical field of power tools, in particular to a water-land dual-purpose electric drill and an electric mechanism. Background Art

[0002] At present, in underwater exploration, mining or underwater maintenance work, when encountering operations such as underwater drilling, cutting or sand pumping, although there are currently pneumatic drill system tools powered by pneumatic power sources, since the power required by pneumatic tools is proportional to the working water depth, the pneumatic drill system is relatively heavy when operating at greater depths underwater, making it difficult to carry and use quickly. Therefore, there is an urgent need for a portable tool capable of operations such as drilling, cutting or sand pumping. Summary of the Utility Model

[0003] The invention object of the utility model is, in view of the above problems, to provide a water-land dual-purpose electric drill and an electric mechanism, which can realize underwater drilling, and use a safe low-voltage DC small direct current signal to control a low-voltage high-current DC motor or an AC motor to work in water. With the development of motor technology, safe-voltage DC motors already have relatively large driving capabilities; moreover, the control circuit can be optimized to be able to use a low-voltage DC small current signal for personal life safety to control a motor that needs a low-voltage high current to operate normally and has sufficient driving capabilities under a high-level anti-electric leakage and waterproof state; therefore, it can be applied to power tools to obtain underwater power tools that meet the requirements.

[0004] To achieve the above object, the technical solution adopted by the utility model is:

[0005] A water-land dual-purpose electric drill includes an electric component and a drilling component. The electric component includes a motor and an outer housing, the motor is installed inside the outer housing, the drilling component includes a drill chuck and a drill bit, the rear end of the drill chuck is in transmission connection with the transmission shaft of the motor passing through the front end of the outer housing, the drill bit is arranged at the front end of the drill chuck, and the motor is an oil-immersed motor.

[0006] Among them, the oil-immersed motor is an oil-immersed DC motor. The drill chuck includes a support and a drill base, the rear end of the support is installed at the front end of the outer housing, the drill base is rotatably installed at the front end of the support through a bearing, the rear end of the drill base is in transmission connection with the transmission shaft of the motor through a coupling, and the front end of the drill base is detachably connected with the drill bit.

[0007] As described above, using an oil-immersed DC motor as the driving motor to form an electric mechanism, realizing normal use underwater according to the waterproof performance of the motor itself, and then configuring an electric drilling component to form an electric drill, which can realize underwater drilling and can also realize cutting through a series of drilling.

[0008] Based on the foregoing solution, in an improved solution, the electric drill further includes a start-stop signal assembly. The start-stop signal assembly includes a start-stop switch and a switch-type driving device. The start-stop switch is installed on the outer housing. The start-stop switch is electrically connected to the driving loop of the switch-type driving device. The switch contact of the switch-type driving device is electrically connected to the power supply loop of the motor and is connected to an auxiliary DC power supply. Among them, the start-stop switch is a boat-shaped contact switch, and the switch-type driving device is a relay or an optocoupler. In this way, a control driving loop is formed, and the switch-type driving device can be controlled by using a safe voltage DC power supply. The start-stop switch is arranged on the outer shell of the electric mechanism, and the operator can control the on-off of the switch by himself. In an improved solution, the start-stop signal assembly further includes an air switch and a leakage protector. The input end of the air switch is electrically connected to an external power supply. The output end of the air switch is electrically connected to one end of the switch contact of the switch-type driving device. The other end of the switch contact of the switch-type driving device is electrically connected to the input end of the leakage protector. The output end of the leakage protector is electrically connected to the input end of the motor. In this way, the air switch plays a role in turning on and off, and the leakage protector plays a role in leakage protection when tripping and opening due to leakage. In an improved solution, the start-stop signal assembly further includes an LED lamp. The LED lamp is installed on the outer housing and is electrically connected to the power supply loop of the motor. In this way, the LED lamp emits light when the power supply loop of the motor is turned on, and can play an indicating role. In an improved solution, liquid electrical glue is injected into the start-stop switch. In this way, it plays a role in sealing, waterproofing and leakage protection.

[0009] Based on the foregoing solution, in an improved solution, the support of the electric drill includes a support body and an end seat. The end seat has a cylindrical structure with its front end radially contracted. A bearing is installed on the inner wall of the front end of the end seat. The rear end of the end seat is installed at the front end of the support body. The rear end of the support body is installed at the front end of the outer housing, and the support body has a frame structure or a cylindrical structure provided with radial through holes. In this way, the split structure is adopted to facilitate the disassembly and assembly of the transmission connection structure, and the frame structure or the arrangement of radial through holes of the support body is convenient for air or water convection heat dissipation. In an improved solution, the support further includes an end cover. The end cover is installed on the front end face of the end seat, and a cover hole is provided in the middle of the end cover to pass through the drill base. In this way, it plays a role in limiting and protecting.

[0010] Due to the adoption of the above technical solution, the present utility model has the following beneficial effects:

[0011] A kind of amphibious electric drill and electric mechanism of the utility model adopts an oil-immersed DC motor (low voltage) as the driving motor to form the electric mechanism. According to the waterproof performance of the motor itself, it can be used normally underwater. Then, with an electric drilling component configured, an electric drill can be formed, which can realize underwater drilling. Moreover, through a series of drilling and hammering, cutting can be achieved. An on-off switch and a switch-type driving device form a control driving circuit, and the switch-type driving device can be controlled by using a safety voltage direct current. The on-off switch is arranged on the outer shell of the electric mechanism, and the operator can control the on-off of the switch by himself, which is convenient to conduct or cut off the power supply according to the on-site situation and control the start and stop of the electric drill. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Fig. 1 is a schematic structural diagram of Example 1 of the electric drill with a water drill bit of the utility model.

[0013] Figure 2 is Figure 1 a schematic structural diagram of Example 1 of the electric drill.

[0014] Figure 3 is Figure 2 a schematic structural diagram from another perspective.

[0015] Figure 4 is Figure 2 a schematic structural diagram of the end seat.

[0016] Figure 5 is Figure 2 a schematic structural diagram of the support body.

[0017] Figure 6 is Figure 2 a schematic structural diagram of the installation state of the support body.

[0018] Figure 7 is Figure 6 a schematic structural diagram from another perspective.

[0019] Figure 8 is Figure 2 a schematic structural diagram of the connection structure between the transmission shaft and the drill seat.

[0020] Figure 9 is Figure 8 a schematic diagram of the partial internal structure.

[0021] Figure 10 is Figure 2 a schematic diagram of the internal structure of the electric component.

[0022] Figure 11 is Figure 2 a schematic diagram of the electric component structure.

[0023] Figure 12 is Figure 2 a schematic diagram of the structure of the DC oil-immersed motor.

[0024] Figure 13 It is the circuit diagram of Drill Example 1 of the present utility model.

[0025] Figure 14 It is the schematic structural diagram of Drill Example 1 with a twist drill bit configured by the present utility model.

[0026] Figure 15 It is the schematic structural diagram of Drill Example 2 of the present utility model.

[0027] Figure 16 It is the schematic structural diagram of Drill Example 3 of the present utility model.

[0028] Figure 17 It is the schematic diagram of the partial structure of Drill Example 4 of the present utility model.

[0029] Figure 18 It is the schematic structural diagram of Drill Example 5 of the present utility model.

[0030] Figure 19 It is the schematic structural diagram of Drill Example 6 of the present utility model.

[0031] In the drawings, 1 is an electric component, 2 is a drilling component, and 3 is a start-stop switch. Specific Embodiments

[0032] Embodiment 1

[0033] Refer to Figures 1 - 13 , a water-land dual-purpose drill of this embodiment includes an electric component (electric mechanism) 1 and a drilling component 2. The electric component 1 includes a motor and an outer housing 12. The motor is installed inside the outer housing 12. The drilling component 2 includes a drill chuck and a drill bit. The rear end of the drill chuck is in transmission connection with the transmission shaft of the motor passing through the front end of the outer housing 12. The drill bit is arranged at the front end of the drill chuck. The motor is an oil-immersed motor.

[0034] Among them, the oil-immersed motor (oil-immersed type motor) can adopt an oil-immersed AC motor or an oil-immersed DC motor. As described later, the present application preferably adopts an oil-immersed DC motor (low voltage), and mainly takes this as an example for illustration. Of course, an oil-immersed low-voltage AC motor can also be used for replacement under the condition that other safety measures meet the standards, and it will not be elaborated here.

[0035] The drill chuck includes a support and a drill base 25. The rear end of the support is installed at the front end of the outer housing. The drill base 25 is rotatably installed at the front end of the support through a bearing 24. The rear end of the drill base 25 is in transmission connection with the transmission shaft of the oil-immersed DC motor 11 through a coupling 22. The front end of the drill base 25 is detachably connected with a drill bit.

[0036] The outer housing 12 includes an outer shell, a cover 13, and a handle 14. The oil-immersed DC motor 11 is installed inside the outer shell, and its transmission shaft passes through the front end of the outer shell. The cover 13 is threadedly connected to the rear end of the outer shell. A handle extending backward is installed on the outer wall of the outer shell, and the oil-immersed motor dissipates heat through the outer shell. For easy operation, a handle 14 is generally arranged. As shown in the figure, the two ends of the handle 14 are far from the outer shell. In this way, three hand-holding areas can be configured at its two ends and the middle position respectively.

[0037] The oil-immersed motor is installed inside the outer housing, and the oil-immersed motor dissipates heat through the outer housing. Specifically, one is that the oil-immersed motor dissipates heat through the conduction of the outer housing. The outer wall of the oil-immersed motor is in close contact with the outer shell and dissipates heat through the conduction of the outer shell. At this time, an outer shell made of aluminum with good heat dissipation can be used. The oil-immersed motor is sleeved into the outer shell and thermal conductive glue is injected to make the outer wall of the oil-immersed motor in close contact with the inner wall of the aluminum outer shell to achieve heat conduction and heat dissipation, and the outer shell is placed in water to achieve cooling and heat dissipation. The second is that the oil-immersed motor makes the outside water enter the outer housing through the through-hole structure on the outer housing to soak the oil-immersed motor, so as to achieve cooling and heat dissipation; if the outer housing completely wraps the oil-immersed motor, at this time, heat dissipation holes communicating inside and outside are arranged on the outer housing. The heat dissipation holes can be arranged on the outer housing (as described later, this application preferably takes the arrangement of radial through-holes on the cylindrical outer shell as an example of heat dissipation holes. Similarly, heat dissipation holes can also be arranged at the front end of the outer shell or on the cover. This application will not elaborate one by one). So that the outside water soaks into the inside and contacts the outer wall of the oil-immersed motor, and then cooling and heat dissipation are achieved; if part of the oil-immersed motor is exposed, for example, the front end of the outer shell is retained and the rear end of the outer shell and the cover are removed (the rear end of the oil-immersed motor is used as part of the outer shell and the cover), or the middle of the outer shell is cut in a ring to expose the oil-immersed motor (the front end and the rear end of the outer shell are disconnected, and the rear end of the outer shell and the cover are installed on the outer wall of the oil-immersed motor), at this time, the outer wall of the oil-immersed motor directly contacts the outside water, and then cooling and heat dissipation are achieved; if the oil-immersed motor is completely exposed, that is, only the front end of the outer shell is retained as a receiving part, the outer wall and the rear end of the oil-immersed motor are used as the outer shell and the cover, and the handle is directly welded to the outer wall of the oil-immersed motor or the front end of the outer shell. At this time, the outer wall of the oil-immersed motor directly contacts the outside water, and then cooling and heat dissipation are achieved. Similarly, when used on land, cooling and heat dissipation are achieved by placing the outer shell or the oil-immersed motor in the air. As described above, these examples of the outer housing structure can all be realized by combining conventional means according to actual needs, and this application will not elaborate on each feature combination example one by one.

[0038] It should be noted that the drilling assembly is an existing technology, and a conventional rotating mechanism can be used for transmission connection to form an electric drill; in Embodiment 1, the motor is improved, and an existing oil-immersed motor (such as the oil-immersed DC motor 11 shown in the figure) is used as the driving motor to form an underwater electric assembly. The DC power supply and control circuit configured for the DC motor are both existing technologies; the outer housing is prepared from existing materials such as plastics and stainless steels, and its size is adapted to the oil-immersed motor and the conventional drilling assembly. AsFigure 1 As shown, in this Embodiment 1, a drill with a water drill bit 26 is taken as an example for illustration. The front end of the drill base is threadedly connected with a water drill bit.

[0039] As described above, the oil-immersed motor is configured to be connected with an external power supply (external DC power supply or external AC power supply) and a switch (start-stop switch) to form a control circuit to control the power supply loop. There are two solutions: One is that the main power supply (external power supply) and the start-stop switch can be arranged on the water surface and opened or closed by the diver himself or with the assistance of others. At this time, the power cord of the oil-immersed motor is directly connected from the motor to the water surface without providing a disconnection point, and there is no need to consider the waterproof and anti-electric leakage problems of the disconnection point. At this time, it is only necessary to ensure that the factory oil-immersed motor and the power cord meet the high-grade waterproof and anti-electric leakage requirements. The other is that the main power supply is arranged on the water surface and the start-stop switch is arranged on the outer casing. At this time, it is necessary to consider the waterproof and anti-electric leakage problems at the connection point of the start-stop switch. At this time, it is required that the factory oil-immersed motor, the start-stop switch and their power cord connections all meet the high-grade waterproof and anti-electric leakage requirements.

[0040] As described above, by using an oil-immersed motor, based on its own and cable waterproof and anti-electric leakage performance, an oil-immersed AC motor with a voltage value less than or equal to 380V can be used. Of course, based on its own and cable waterproof and anti-electric leakage performance, the main power supply uses direct current, which is safer than alternating current. After all, it is a very low-probability event that the two cables of the main power supply loop leak electricity at a very close position and form a loop (causing electric shock to people). Moreover, the main power supply can use a low voltage of 60V, an absolutely safe voltage of 12V, a continuously touchable safe voltage of 24V or a safety extra-low voltage of 36V, etc., which can well ensure safe use in the underwater operation environment. Moreover, at the field use site, it is more convenient to connect to a DC power supply (battery or lithium battery) than to an AC power supply.

[0041] During use, just lift the DC power supply (battery or lithium battery) and the drill to the site for use, which is relatively lighter than a pneumatic drill; moreover, by using a motor and cable with a higher level of sealing performance, it is possible to reach deeper deep water areas for operation without significantly increasing the volume and weight of the drill (or other electric tools).

[0042] In this way, by using an oil-immersed motor (low-voltage DC) as the driving motor to form an electric mechanism, and realizing normal use underwater according to the waterproof performance of the motor itself, and then configuring an electric drilling component to form a drill, underwater drilling can be achieved, and cutting can also be achieved through a series of drilling and hammering.

[0043] Embodiment 2

[0044] Based on the foregoing Embodiment 1, in this Embodiment 2, the control circuit is improved. For other unmentioned matters, please refer to the foregoing Embodiment 1.

[0045] See Figures 1 - 13, a water-land dual-purpose electric drill according to Embodiment 2 of the present invention. The electric drill further includes a start-stop signal assembly, and the start-stop signal assembly includes a start-stop switch 3 and a switch-type driving device. The start-stop switch 3 is installed on the outer housing 12. The start-stop switch 3 is electrically connected to the driving loop of the switch-type driving device and is connected to an auxiliary DC power supply (auxiliary power supply), and the switch contacts of the switch-type driving device are electrically connected to the power supply loop of the motor 11.

[0046] Among them, the start-stop switch 3 is a prior art, and a boat-shaped contact switch 3 is taken as an example for illustration. The switch-type driving device not only has a switching function but also a driving function, and can drive a large current or high power with a small current; specifically, the switch-type driving device is a relay, an optocoupler, a thyristor, etc.

[0047] Such as Figure 13 , a DC12V power supply motor control circuit example is given. The DC12V power supply forms a driving circuit through the relay J coil and the boat-shaped contact switch 3 (start-stop switch K). The boat-shaped contact switch 3 is connected by a driving wire 31, and the motor is connected to the DC12V power supply to form a power supply loop. The normally open contact JK of the relay J (as a switch contact) is connected to the power supply loop. When the boat-shaped contact switch is closed, the relay coil is conducted, the relay J is attracted, the normally open contact JK is closed, the motor power supply loop is conducted, and the motor runs.

[0048] The switch-type driving device is connected to the control circuit; for example, the DC12V power supply forms a driving circuit through the two input terminals of the optocoupler and the start-stop switch, and the motor is connected to the DC12V power supply to form a power supply loop. The output terminal of the optocoupler (as a switch contact) is connected to the power supply loop; the 5V relay coil is electrically connected to the 51 single-chip microcomputer, and its normally open contact is electrically connected to the motor power supply loop; the two input terminals of the optocoupler are electrically connected to the 51 single-chip microcomputer, and the output terminal of the optocoupler is electrically connected to the motor power supply loop; the 51 single-chip microcomputer is electrically connected to the thyristor control terminal, and the two connection terminals of the thyristor (as a switch contact) are electrically connected to the motor power supply loop; etc.; it will not be elaborated here.

[0049] In another example, the main power supply is a 60V battery pack, which is connected to a DC60V oil-immersed DC motor through a cable. At the same time, the auxiliary power supply for controlling the driving loop uses a 12V battery, which forms a loop through a cable connected to a relay, a start-stop switch, etc. The specific circuit connection refers to the foregoing, which is a prior art and will not be elaborated here.

[0050] In this way, a control driving loop is formed by using the start-stop switch and the switch-type driving device, which is connected to an external auxiliary power supply (DC), and the switch-type driving device can be controlled by using a safe voltage DC power supply (low voltage signal). The start-stop switch is arranged on the electric mechanism housing, and the operator can control the on-off of the switch by himself, so as to conduct or disconnect the power supply according to the on-site situation and control the start and stop of the electric drill.

[0051] Of course, in the case of adopting the example of the combination of AC motor characteristics, the external main power supply of the AC motor is an AC power supply of 110V, etc. The control drive circuit adopts a safety voltage (less than 36V) DC power supply, and relay control can be adopted. For the specific circuit connection, refer to the foregoing, which is an existing technology and will not be elaborated here.

[0052] As described above, the main power supply for driving the motor is generally a low-voltage power supply with a relatively high voltage value (less than or equal to 380V), that is, the main power supply is a low-voltage power supply with a relatively high voltage value compared to the auxiliary power supply; after all, if the voltage is too low, the working effect of the driving motor will be too low. The auxiliary power supply, that is, the auxiliary power supply for the start-stop switch and the control circuit of the switch-type driving device, must be a safety voltage DC power supply (less than or equal to 36 volts) to better maintain the safety of human life during operation. The switch-type driving device generally adopts a relay, and the auxiliary power supply is generally applicable to 12V or 24V DC power supply.

[0053] Embodiment 3

[0054] Based on the foregoing Embodiment 2, in this Embodiment 3, the control circuit is improved. On the basis of the high-level waterproof and anti-electric leakage functions of the oil-immersed motor, a protection circuit is added to protect the safety of underwater workers. For other unmentioned descriptions, please refer to Embodiments 1 and 2 above.

[0055] See Figures 1 - 13 , for a water-land dual-purpose electric drill in this Embodiment 3, the start-stop signal assembly further includes an air switch QF and a leakage protector RCD. The input end of the air switch QF is electrically connected to an external power supply (main power supply), the output end of the air switch QF is electrically connected to one end of the switch contact of the switch-type driving device, the other end of the switch contact of the switch-type driving device is electrically connected to the input end of the leakage protector, and the output end of the leakage protector is electrically connected to the input end of the motor. As Figure 13 shown, taking a DC motor as an example, the external DC power supply is DC12V.

[0056] In this way, the air switch plays a role in controlling the on-off of the motor power circuit, and the leakage protector plays a role in leakage protection when tripping and opening due to leakage.

[0057] As described above, taking a water-land dual-purpose drill with a low-voltage small-current control for a low-voltage large-current DC drive motor to assemble a diamond drill bit for underwater use as an example, the motor is an oil-immersed DC motor or an AC motor with a high level of waterproof and leakage protection. The start-stop switch of the motor forms a circuit with a low-voltage DC small-current signal that is safe for the human body to control the power-on and power-off of the large-current low-voltage motor. Moreover, to further improve the safety configuration in cooperation with the start-stop switch and the motor, corresponding air switches, switch-type drivers, and leakage switches (AC leakage switches or DC leakage switches) are provided. In this way, a safe low-voltage DC power supply is used to control the power-on or power-off of the low-voltage large current required for driving a DC motor or an AC motor during operation, so as to achieve drilling or stopping work underwater while ensuring the safety of divers. Of course, through various existing adapters in the market, the drill chuck can perform various operations such as drilling, cutting, or sand pumping underwater.

[0058] When working underwater, safety comes first. For the operation and control of the underwater motor, with the operation of the underwater motor as the main focus, it can be divided into two groups of power supplies: the main power supply (for driving the motor) and the auxiliary power supply (for driving switch-type driving devices, etc.). The two groups of power supplies can share an external power supply through a parallel switch-type driving device and a buck circuit. For example, in the characteristic combination example of a 12V DC motor, a 12V external DC power supply is shared through parallel DC12V relays, as shown in Figure 13 . Another example is that in the characteristic combination example of a 110V AC motor, an AC110V external AC power supply is shared through a parallel AC110V to DC24V buck conversion circuit and DC24V relays. The AC110V to DC24V buck conversion circuit converts AC110V into DC24V direct current to form an auxiliary power supply for the auxiliary power supply. The buck conversion circuit, relays, and their connections are all common existing technologies in the market.

[0059] Embodiment 4

[0060] Based on the foregoing Embodiment 2 or 3, in this Embodiment 4, the control circuit is improved. For other unmentioned details, please refer to the foregoing Embodiments 1, 2, and 3.

[0061] Refer to Figures 1 - 13 , for a water-land dual-purpose drill in this Embodiment 4, the start-stop signal assembly further includes an LED lamp 31. The LED lamp 31 is installed on the outer housing 12, for example, adhered beside the start-stop switch or arranged closely, etc., and the LED lamp 31 is electrically connected to the power supply circuit of the motor 11. Among them, the LED lamp is electrically connected to the main power supply circuit of the motor, and the protection of the wiring contact part follows and meets the requirements of the personal safety level of anti-leakage and waterproofing. A high-grade waterproof and anti-leakage underwater indicator light can be directly purchased in the market and connected, such as a boat-shaped switch equipped with a safety indicator LED lamp.

[0062] In this way, the LED light emits light when the power circuit of the motor is turned on, which can play an indicating role.

[0063] Embodiment 5

[0064] Based on the foregoing Embodiment 2 or 3, 4, in this Embodiment 5, the control circuit is improved. For other details not described, please refer to the foregoing Embodiment 1 and 2, 3, 4.

[0065] See Figures 1 - 13 , in a water-land dual-purpose electric drill of this Embodiment 5, liquid electrical glue is injected into the start-stop switch 3. In this way, it plays a role in sealing, waterproofing, and preventing electric leakage.

[0066] Embodiment 6

[0067] Based on the foregoing Embodiment 2 or 3, 4, 5, in this Embodiment 6, the drill chuck structure is improved. Its size is adapted to the oil-immersed motor and the drill bit, and it is made of stainless steel and other materials. For other details not described, please refer to the foregoing Embodiment 1 and 2, 3, 4, 5.

[0068] See Figures 1 - 13 , in a water-land dual-purpose electric drill of this Embodiment 6, the support of the electric drill includes a support body 21 and an end seat 23. The end seat 23 has a cylindrical structure with its front end radially contracted. An axial hole 231 is arranged at the front end of the end seat 23. A bearing 24 is installed on the inner wall of the axial hole 231. The rear end of the end seat 23 is installed at the front end of the support body 21, and the rear end of the support body 21 is installed at the front end of the outer housing 12, and the support body 21 has a frame structure.

[0069] See Figure 17 , another example of the support body is given. At this time, in order to distinguish and explain, it is defined as the support body'. The support body' 21' has a cylindrical structure with radial through holes arranged, and the radial through holes are distributed in an annular array, etc.

[0070] After the electric component 1 is prepared, the drilling component can be configured to form an electric drill, and the hammering component can also be configured to form a hammer drill, which can be connected by a gearbox. These electric drills and hammer drills and other devices are all existing technologies. That is, for the transmission connection structure of the drill base 25, in addition to being fixedly connected to the transmission shaft by welding, a gear transmission or a coupling transmission connection structure can also be used. At this time, using a split structure facilitates the disassembly and assembly of the transmission connection structure of the drill base 25. Moreover, the support body having a frame structure or being provided with radial through holes facilitates air or water convection heat dissipation and weight reduction.

[0071] The oil-immersed DC motor is an existing device. Taking the DC motor of a DC60V direct-current water pump (submersible pump) as an example; the fixing holes, cables, and drive shaft 111 of this motor are all arranged at the front end of the motor. Correspondingly, a wire-passing hole I 122 is opened at the front end of the outer housing 12 to pass the motor cable, a wire-passing hole II 213 communicating with the outside is arranged on the support frame to pass the motor cable, a shaft connection hole I 121 is arranged at the front end of the outer housing, and a shaft connection hole II 211 is arranged at the rear end of the support body. The positions of the shaft connection hole I and the shaft connection hole II are adapted to the fixing holes, and bolt I passes through the shaft connection hole I and the shaft connection hole II and is threadedly connected to the motor fixing holes; an axially protruding lifting lug is arranged at the front end of the support body 21, a radial connection hole I 212 is arranged on the lifting lug, and radial connection holes II 232 distributed in a circumferential array are arranged on the side surface of the end seat. Bolt II passes through the radial connection holes II and is threadedly connected to the radial connection hole I; the inner wall protrusions at both ends of the coupling are respectively adapted to the grooves at one end of the drive shaft and the drill base for circumferential limit connection, and bolt III passes through the middle of the coupling and is threadedly connected to the end of the rear end of the drill base. Of course, in order to optimize the cable passing and series connection structure and position, the cable can be arranged at the rear end of the outer housing, customize the motor so that its cable passes out from the rear end, and then passes out from positions such as the middle of the cover body 13 or beside the connection points at both ends of the handle, etc. The motor and its cable passing structure can all refer to the arrangement of existing electric tools and will not be elaborated here.

[0072] As Figure 15 shown, based on the foregoing example, in a preferred example, the support also includes an end cover 27, the end cover 27 is installed on the front end face of the end seat 23, and a cover hole is provided in the middle of the end cover 27 to pass the drill base 25. This plays a role of limiting and protecting.

[0073] Embodiment 7

[0074] See Figure 14 , the difference between this Embodiment 7 and the foregoing Embodiments 1-6 is that in this Embodiment 7, the drill bit uses a twist drill bit, and the drill base 25 is connected to the twist drill bit 261 through an adapter 262. Both the twist drill bit and the adapter are existing technologies. The adapter is threadedly connected to the front end (the connection working end) of the drill base, thus forming a twist drill rig.

[0075] Embodiment 8

[0076] See Figure 16 , the difference between this Embodiment 8 and the foregoing Embodiments 1-7 is that in this Embodiment 8, a different handle structure is adopted. The distances between both ends of the handle '14' and the outer housing are relatively close, making it difficult to be used as a hand-holding area, and 1 hand-holding area is arranged in the middle of the handle. Of course, there are also other structures such as the L-shaped structure, etc., which will not be elaborated one by one here.

[0077] Embodiment 9

[0078] See Figure 17, the difference between this Embodiment 9 and the foregoing Embodiments 1-8 is that in this Embodiment 9, the outer housing is provided with a heat dissipation structure communicating inside and outside, which is defined as the outer housing' for the purpose of distinction and explanation. The housing of the outer housing'12' is in a cylindrical structure provided with radial through holes (heat dissipation holes). Water enters the outer housing and contacts the outer wall of the oil-immersed motor for heat dissipation. Moreover, relative to the heat dissipation holes arranged axially (such as the heat dissipation holes arranged on the cover 13), this radially arranged heat dissipation hole structure can be commuted by shaking it during use, which is convenient for air or water convection commutation, thereby ensuring better heat dissipation of the motor therein. The heat dissipation performance of this motor is better, and the continuous operation time limit of the power tool is longer. Especially in the underwater situation, it can be taken over by several operators with diver qualifications in turn to continuously perform operations underwater within the continuous operation time limit of the power tool.

[0079] Embodiment 10

[0080] See Figure 18 , the difference between this Embodiment 10 and the foregoing Embodiments 1-9 is that in this Embodiment 10, the outer housing has a combined feature, and a secondary handle 15 is also provided. The secondary handle 15 is welded or bolted to the side wall of the end seat 23. The handle and the secondary handle, etc. are all prior arts and can be made of an inner layer of stainless steel pipe and an outer layer of silicone protective sleeve. The operator holds the secondary handle and can operate more stably. For example, the support 21 and the end seat 23 also adopt the existing stainless steel material, and the secondary handle is welded to the end seat through a stainless steel pipe.

[0081] Embodiment 11

[0082] See Figure 19 , the difference between this Embodiment 11 and the foregoing Embodiments 1-10 is that in this Embodiment 11, the outer housing has a combined feature, and a secondary handle 15 is also provided. The secondary handle 15 is welded or bolted to the side wall of the end cover'27', and the end cover' adopts a frustum-shaped structure with one end large and one end small; among them, in addition to playing a role in limiting and fixing the handle, the end cover' can also be configured with a water spray pipeline with reference to a conventional water drill and used for spraying water with a water pump and pipeline when on land, which is a prior art; the handle and the secondary handle, etc. are all prior arts and can be made of an inner layer of plastic pipe and an outer layer of silicone protective sleeve. The operator holds the secondary handle and can operate more stably. For example, the end cover'27' also adopts the existing plastic material, and the secondary handle is bonded or bolted to the outer wall of the end cover' through a plastic pipe.

[0083] Embodiment 12

[0084] The foregoing Embodiments 1-11 include an electric mechanism, which is configured with a drilling assembly to form a drill, and can also be configured with a hammering assembly to form a hammer drill, etc., and can constitute various power tools. In this application, the drill is taken as an example for illustration, and others can be realized by cooperating with existing structures on the basis of the foregoing solutions, and will not be elaborated one by one here. This Embodiment 12 briefly describes the electric mechanism. For the basic solution and the combined examples of the features of each improvement solution, please refer to the foregoing Embodiments 1-11.

[0085] See Figures 1 - 19 A water-land dual-purpose electric mechanism of Embodiment 12 includes a motor and a housing. The motor is installed inside the housing, and the transmission shaft of the motor passes through the front end of the housing to be drivingly connected to an external actuator. The motor is an oil-immersed motor. Among them, the oil-immersed motor is an oil-immersed DC motor. The housing includes a housing, a cover, and a handle. The motor is installed inside the housing and its transmission shaft passes through the front end of the housing. The cover is threadedly connected to the rear end of the housing, and a handle extending backward is installed on the outer wall of the housing. In this way, an oil-immersed motor (low-voltage DC) is used as the driving motor to form an electric mechanism. According to the waterproof performance of the motor itself, it can be used normally underwater. By configuring an electric drilling component, etc., various electric tools such as an electric drill can be formed, and operations such as underwater drilling can be correspondingly realized.

[0086] Based on the foregoing example, in a preferred example, it further includes a start-stop signal component. The start-stop signal component includes a start-stop switch and a switch-type driving device. The start-stop switch is installed on the housing, and the start-stop switch is electrically connected to the driving loop of the switch-type driving device. The switch contact of the switch-type driving device is electrically connected to the power supply loop of the motor.

[0087] Based on the foregoing example, in a preferred example, the start-stop signal component further includes an air switch and a leakage protector. The input end of the air switch is electrically connected to an external power supply, the output end of the air switch is electrically connected to one end of the switch contact of the switch-type driving device, the other end of the switch contact of the switch-type driving device is electrically connected to the input end of the leakage protector, and the output end of the leakage protector is electrically connected to the input end of the motor.

[0088] Based on the foregoing example, in a preferred example, liquid electrical glue is injected into the start-stop switch. The start-stop switch is a boat-type contact switch, and the switch-type driving device is a relay or an optocoupler.

[0089] Based on the foregoing example, in a preferred example, the start-stop signal component further includes an LED lamp. The LED lamp is installed on the housing, and the LED lamp is electrically connected to the power supply loop of the motor.

[0090] Based on the foregoing example, in a preferred example, the housing of the housing is in a cylindrical structure provided with radial through holes, and the radial through holes are distributed in an annular array, etc.

[0091] It should be noted that the examples of the above embodiments can be preferably selected one or more in combination according to actual needs. The drawings of multiple examples using a set of combined technical features will not be elaborated one by one here.

[0092] It should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0093] The above description is a detailed description and illustration of the preferred feasible embodiments of the present utility model, but these descriptions are not intended to limit the scope of protection required by the present utility model. Any equivalent changes or modifications completed under the technical teachings prompted by the present utility model should fall within the scope of patent protection covered by the present utility model.

Claims

1. An amphibious electric drill, comprising an electric component and a drilling component, wherein the electric component comprises a motor and an outer shell, wherein the motor is installed in the outer shell, wherein the drilling component comprises a drill chuck and a drill bit, wherein the rear end of the drill chuck is drivingly connected to a transmission shaft of the motor passing through the front end of the outer shell, wherein the drill bit is arranged on the front end of the drill chuck, and wherein: The motor is an oil-immersed DC motor.

2. The amphibious electric drill according to claim 1, characterized in that: It also includes a start-stop signal component, which includes a start-stop switch and a switch-type drive device. The start-stop switch is installed on the outer shell, the start-stop switch is electrically connected to the drive circuit of the switch-type drive device and is connected to the auxiliary DC power supply, and the switch contacts of the switch-type drive device are electrically connected to the power supply circuit of the motor.

3. The amphibious electric drill according to claim 2, characterized in that: The start-stop signal component also includes an air switch and a leakage protector, the input end of the air switch is electrically connected to an external power supply, the output end of the air switch is electrically connected to one end of a switch contact of a switch-type drive device, the other end of the switch contact of the switch-type drive device is electrically connected to the input end of the leakage protector, and the output end of the leakage protector is electrically connected to the input end of the motor; wherein, the start-stop signal component also includes an LED lamp, the LED lamp is mounted on the outer shell, and the LED lamp is electrically connected to the power supply circuit of the motor.

4. The amphibious electric drill according to claim 2, characterized in that: Liquid electrical glue is injected into the start-stop switch, the start-stop switch is a boat-type contact switch, and the switch-type driving device is a relay or an optical coupler.

5. The amphibious electric drill according to claim 1, characterized in that: The drill chuck comprises a support and a drill seat, the rear end of the support is installed on the front end of the outer shell, the drill seat is rotatably installed on the front end of the support through a bearing, the rear end of the drill seat is connected to the transmission shaft of the motor through a coupling, and the front end of the drill seat is detachably connected with a drill bit.

6. The amphibious electric drill according to claim 5, characterized in that: The support includes a support body and an end seat, the end seat is a cylindrical structure with a radial contraction at its front end, a bearing is installed on the inner wall of the front end of the end seat, the rear end of the end seat is installed on the front end of the support body, the rear end of the support body is installed on the front end of the outer shell, and the support body is a frame structure or a cylindrical structure arranged with radial through holes; wherein, the support also includes an end cover, the end cover is installed on the front end end face of the end seat, and a cover hole is provided in the middle of the end cover to penetrate the drill seat; and, the outer shell includes an outer shell and a cover body, and a handle, the motor is installed in the outer shell and its transmission shaft passes through the front end portion of the outer shell, the rear end of the outer shell is threadedly connected to the cover body, and a handle extending backward is installed on the outer wall of the outer shell, and the oil-immersed motor dissipates heat through the outer shell; wherein, the outer shell is a cylindrical structure arranged with radial through holes.

7. An amphibious electric mechanism, comprising a motor and an outer shell, wherein the motor is installed in the outer shell, and a transmission shaft of the motor passes through the front end of the outer shell to be transmission-connected to an external actuator, characterized in that: The motor is an oil-immersed DC motor.

8. The amphibious electric mechanism according to claim 7, characterized in that: It also includes a start-stop signal component, which includes a start-stop switch and a switch-type drive device. The start-stop switch is installed on the outer shell, the start-stop switch is electrically connected to the drive circuit of the switch-type drive device and is connected to the auxiliary DC power supply, and the switch contacts of the switch-type drive device are electrically connected to the power supply circuit of the motor.

9. The amphibious electric mechanism according to claim 8, characterized in that: The start-stop signal component also includes an air switch and a leakage protector, the input end of the air switch is electrically connected to an external power supply, the output end of the air switch is electrically connected to one end of a switch contact of a switch-type driving device, the other end of the switch contact of the switch-type driving device is electrically connected to the input end of the leakage protector, and the output end of the leakage protector is electrically connected to the input end of the motor; wherein, liquid electrical glue is injected into the start-stop switch, the start-stop switch is a boat-shaped contact switch, and the switch-type driving device is a relay or an optocoupler; wherein, the start-stop signal component also includes an LED lamp, the LED lamp is mounted on the outer shell, and the LED lamp is electrically connected to the power supply circuit of the motor.

10. The amphibious electric mechanism according to claim 7, characterized in that: The outer shell includes an outer shell, a cover body and a handle. The motor is installed in the outer shell and its transmission shaft passes through the front end of the outer shell. The rear end of the outer shell is threadedly connected to the cover body. A handle extending backward is installed on the outer wall of the outer shell. The oil-immersed motor dissipates heat through the outer shell; wherein the outer shell is a cylindrical structure arranged with radial through holes.

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