CN110508849B - Anti-seismic handheld electric drill - Google Patents
Anti-seismic handheld electric drill Download PDFInfo
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- CN110508849B CN110508849B CN201910736527.3A CN201910736527A CN110508849B CN 110508849 B CN110508849 B CN 110508849B CN 201910736527 A CN201910736527 A CN 201910736527A CN 110508849 B CN110508849 B CN 110508849B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/003—Attachments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
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Abstract
The invention discloses an anti-seismic handheld electric drill which comprises an electric drill body, wherein the front side and the back side of the electric drill body are fixedly connected with connecting plates, the right side surface of each connecting plate is connected with a second sliding ring in a clamping mode, a threaded column is connected with the inner thread of each second sliding ring in a threaded mode, a screwing ring is fixedly connected to the right end of each threaded column, and the left end of each threaded column is sleeved in a sleeve; through setting up the spring beam, can produce the vibrations power when the drill bit is drilled, the vibrations power can be transmitted for the motor, the motor receives and produces after vibrations meeting and rocks, the spring beam can utilize self elasticity extension or shrink this moment, provide certain cushion effect for the motor, can drive the connecting plate back-and-forth movement when boring the body and receiving vibrations, make the screw post can be in the sleeve back-and-forth movement, the second spring can provide the cushion effect for the screw post and make the boring body can receive fine shock attenuation effect, make people can be stable hold the electric drill body at the during operation, avoid the hand to skid and lead to the drilling failure.
Description
Technical Field
The invention belongs to the technical field of electric drills, and particularly relates to an anti-seismic handheld electric drill.
Background
The electric drill is a common tool for drilling, screwing and screwing in the mechanical industry, the building industry and the decoration industry.
The existing electric drill does not have an anti-seismic function generally, so that when people hold the electric drill for drilling, the drill bit can shake violently due to blocking, the vibration force can be transmitted to the drill body, and then the hand holding the electric drill by people can generate acid and numb feeling, so that the hand slipping of people can cause the failure of drilling.
Disclosure of Invention
The invention aims to provide an anti-seismic handheld electric drill to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a connecting plate is fixedly connected to the front side and the back side of an electric drill body, a second clamping ring is clamped on the right side face of the connecting plate, a threaded column is connected to the inner thread of the second clamping ring, the left end of the threaded column is fixedly connected with the left side face of the inner wall of a sleeve through a second spring, a rotating shaft is fixedly connected to the left end of the sleeve and sleeved in a bearing, the bearing is clamped on the right side face of a pressing plate, and the threaded column can move transversely along the sleeve;
the electric drill comprises an electric drill body, and is characterized in that a containing cavity is formed in the electric drill body, a motor is arranged in the containing cavity, the right side surface of the motor is fixedly connected with the right side surface of the inner wall of the containing cavity through a spring rod, an output shaft of the motor is fixedly connected with a drill bit through a connecting column, the connecting column is located in a limiting hole formed in the left side surface of the electric drill body, a second sliding ring is fixed in the circumferential direction of the motor and is connected in a second sliding groove in a sliding mode, the second sliding ring surrounds the circumferential direction of the motor, and a space is reserved;
the outer peripheral surface of the threaded column is fixedly connected with a first sliding ring, the first sliding ring surrounds the threaded column in the circumferential direction, the first sliding ring is connected in a first sliding groove in a sliding mode, the first sliding groove is formed in the inner side wall of the sleeve, and the area of the first sliding groove covers the area corresponding to part of threaded residence and the area corresponding to part of the second spring;
a circumferential first flange and a circumferential first notch are arranged at the position, corresponding to the second sliding ring, of the inner side wall of the cavity, the first flange and the first notch are arranged adjacently, the cross section of the first flange is of an arc structure from the edge of the inner side wall of the cavity to the middle part, a circumferential second flange and a circumferential second notch are arranged on the outer edge of the second sliding ring, and the second flange and the second notch are in smooth transition;
the first flange corresponds to the second notch, a first space is formed between the first flange and the second notch, a second space is formed between the second flange and the first notch, an annular first clamping ring is arranged in the first space and clamped on the outer circumference of the second slip ring, and the surfaces of the first flange and the second notch are in contact; and an annular second clamping ring is arranged in the second space and clamped on the outer circumference of the second sliding ring, and the second clamping ring is in contact with the second flange and the surface of the first notch.
Furthermore, motor stress sensors are arranged on the first tightening hoop and the second tightening hoop and used for detecting the stress borne by the tightening hoops in real time, and motor angle sensors are arranged and used for detecting the deflection angles of the tightening hoops;
the electric drill vibration detection device is characterized by further comprising a controller, the controller is used for detecting the vibration condition of the electric drill in real time, the controller is provided with a first stress value A1 and a first angle value B1, the rotating speed of the motor is provided with preset values V1 and V2, V1 is smaller than V2, when the real-time stress value detected by the motor stress detection sensor is larger than A1, the real-time angle value detected by the motor angle sensor is larger than B1, the force of the vibration borne by the motor in the circumferential direction and the radial direction is larger, and the rotating speed of the motor is reduced to be smaller than V1;
when the real-time stress value detected by the motor stress detection sensor is larger than A1, and the real-time angle value detected by the motor angle sensor is smaller than B1, the vibration from the axial direction is large, the vibration in the radial direction is small, the electric drill is properly recovered, and meanwhile, the rotating speed of the motor is reduced to be smaller than V2;
when the motor stress detection sensor detects that the real-time stress value is smaller than A1, and the motor angle sensor detects that the real-time angle value is larger than B1, the vibration from the radial direction is larger, the vibration in the axial direction is smaller, at the moment, the drilling angle of the electric drill needs to be adjusted, the deviation is avoided, and meanwhile, the rotating speed of the motor is reduced to be smaller than V2.
Furthermore, a third flange and a third notch which are spaced are arranged on the inner side wall of the sleeve, a group of fourth flanges and a group of fourth notches are correspondingly arranged on the outer side wall of the first sliding ring, a third tightening ring is arranged in a space between each third notch and each fourth notch, a strain gauge can be further arranged on each third tightening ring to detect the stress of the threaded column, and a third tightening ring angle sensor is arranged to detect the bending angle of each third tightening ring.
Further, a thread column stress value A2, A1> A2 and a third hooping bending angle B2, B2> B1 are arranged in the controller, and strain gauges detect the thread column stress value;
if the stress value is greater than A2 and less than A1, the rotating speed of the motor is reduced to be less than V2;
if the stress value is larger than A1, the motor is detected according to the above, and if the real-time stress value detected by the motor stress detection sensor is larger than A1 and the real-time angle value detected by the motor angle sensor is larger than B1, the forces of the vibration of the motor and the threaded column in the circumferential direction and the radial direction are larger, and the rotating speed of the motor is reduced to be smaller than V1;
if the bending angle value of the third tightening band is greater than B2 and less than B1, the rotating speed of the motor is reduced to be less than V2;
if the bending angle value of the third tightening ring is larger than B1, the motor detection is carried out according to the motor, and if the motor stress value is larger than A1 and the real-time angle value detected by the motor column angle sensor is larger than B1, the forces of the vibration of the motor and the threaded column in the circumferential direction and the radial direction are larger, and the rotating speed of the motor is smaller than V1.
Furthermore, a rubber pad is fixedly connected to the left side face of the pressing plate, the pressing plate is circular, the rubber pad is annular, and a through hole is formed in the left side face of the pressing plate and located on the inner side of the rubber pad.
Furthermore, the spring rod comprises a first spring and a telescopic rod, the first spring is sleeved on the outer surface of the telescopic rod, and the left end and the right end of the first spring and the left end of the telescopic rod are fixedly connected with the right side surface of the motor and the right side surface of the inner wall of the accommodating cavity respectively.
Furthermore, the upper surface and the lower surface of the inner wall of the accommodating cavity are provided with limiting grooves, spongy cushions are arranged in the limiting grooves, a plurality of silencing holes are uniformly formed in the outer surfaces of the spongy cushions, the quantity of the spongy cushions is four, and every two spongy cushions are symmetrically arranged on the front side and the rear side of the first sliding ring.
Furthermore, the front and the back of the inner wall of the accommodating cavity are fixedly connected with water bags, cooling liquid is arranged in the water bags, and the opposite surfaces of the two water bags are attached to the outer surface of the motor.
Further, the first notch is of an arc-shaped structure from the edge of the inner side wall of the cavity to the middle part, and the first flange and the first notch are in smooth transition.
Further, the cross section of the second flange is an arc-shaped structure from the edge to the middle part of the second sliding ring, the second notch is a part from the middle to the edge of the second sliding ring, and the edge of the second sliding ring is used as a flange.
Compared with the prior art, the invention has the beneficial effects that: when the second slip ring moves along the inner side wall of the cavity along the transverse direction, the first clamping ring and the second clamping ring are extruded, the two clamping rings deform to a certain degree, on one hand, the inner side wall of the cavity is buffered to a certain extent in the axial direction, on the other hand, the clamping rings contact and extrude in the radial direction with the first notch of the inner side wall of the cavity and the second notch of the second slip ring, and vibration from the radial direction can be buffered. When the first sliding ring moves along the transverse direction, the fourth flange, the third flange and the third notch which are contacted in sequence generate impact and extrusion, and a proper damping effect is achieved; meanwhile, the third clamping ring can buffer the vibration along the radial direction due to the fact that the third clamping ring is continuously contacted with the third flange and the curved outer side wall of the third notch.
Furthermore, when the stress detection sensor detects that the real-time stress value is larger than A, and the angle sensor detects that the real-time angle value is larger than B, the vibration of the motor is larger in the circumferential direction and the radial direction, and the stopped motor acts to stop drilling; when the stress detection sensor detects that the real-time stress value is larger than A, and the angle sensor detects that the real-time angle value is smaller than B, the vibration from the axial direction is large, the vibration in the radial direction is small, and the electric drill is properly recycled. When the stress detection sensor detects that the real-time stress value is smaller than A, and the angle sensor detects that the real-time angle value is larger than B, the vibration from the radial direction is large, the vibration in the axial direction is small, at the moment, the drilling angle of the electric drill needs to be adjusted, and the deviation is avoided.
The invention takes the threaded column as a priority factor, and if the electric drill bears loss, the threaded column can deform firstly, so that the motor is detected firstly, and under the condition that the safety of the threaded column is ensured, the motor is detected again, and the safety of the motor is protected.
Further, through setting up the spring beam, can produce the vibrations power when the drill bit is drilled, the vibrations power can be transmitted for the motor, the motor receives and produces after vibrations meeting and rocks, the spring beam can utilize self elasticity extension or shrink this moment, provide certain cushion effect for the motor, make the motor can receive the shock attenuation effect, through setting up the second spring, screw post and sleeve, can transmit for boring the body when the motor receives vibrations, bore the body and can drive the connecting plate back-and-forth movement when receiving vibrations, make the screw post can be at the internal back-and-forth movement of sleeve, the second spring can provide the cushion effect for the screw post makes the body that bores to receive fine shock attenuation effect, make people hold the electric drill body that can be stable at the during operation, avoid the hand to skid and lead to the drilling failure.
Drawings
FIG. 1 is a schematic structural view of the anti-vibration hand held electric drill of the present invention;
FIG. 2 is a schematic front sectional view of an anti-seismic electric hand drill bit according to the present invention;
FIG. 3 is a schematic sectional view of an elevation of an anti-seismic electric hand drill sleeve according to the present invention;
FIG. 4 is a left side view structural schematic diagram of the anti-seismic electric hand drill pressure plate and the rubber pad of the present invention;
FIG. 5 is a schematic view of a portion of a motor of the anti-vibration hand held electric drill of the present invention;
fig. 6 is a schematic structural diagram of a tightening ring of the anti-seismic hand-held electric drill in the invention.
Detailed Description
The present invention will be further described with reference to the following examples.
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.
Referring to fig. 1-4, the electric hand-held vibration drill of the embodiment of the invention comprises an electric drill body 7, wherein the front side and the back side of the electric drill body 7 are fixedly connected with a connecting plate 6, the right side surface of the connecting plate 6 is clamped with a second clamping ring 5, the second clamping ring 5 is internally threaded with a threaded column 4, the right end of the threaded column 4 is fixedly connected with a screwing ring, the left end of the threaded column 4 is sleeved in a sleeve 3, the left end of the sleeve 3 is fixedly connected with a rotating shaft which is sleeved in a bearing, the bearing is clamped on the right side surface of a pressure plate 1, a containing cavity 11 is formed in the electric drill body 7, a motor 8 is arranged in the containing cavity 11, the right side surface of the motor 8 is fixedly connected with the right side surface of the inner wall of the containing cavity 11 through a spring rod 13, an output shaft of the motor 8 is fixedly connected with a drill bit through a connecting column which is positioned in, the second slip ring 14 is slidably connected in the second sliding groove, the second slip ring 14 surrounds the motor 8 in the circumferential direction, and a space is reserved between the second slip ring 14 and the inner wall of the housing 11.
Wherein, the peripheral surface fixedly connected with first sliding ring 9 of screw post 4, first sliding ring 9 centers on the circumference of screw post, and first sliding ring 9 sliding connection is in first spout 30, and first spout is seted up on the inside wall of sleeve 3. The first sliding groove 30 is arranged on the inner side wall of the sleeve, and the area of the first sliding groove covers the area corresponding to a part of the screw thread 4 and the area corresponding to a part of the second spring. Left end of screw post 4 passes through the left surface fixed connection of second spring 15 with 3 inner walls of sleeve, through setting up second spring 15, screw post 4 and sleeve 3, can transmit for boring when motor 8 receives vibrations, bore and to drive connecting plate 6 back-and-forth movement when receiving vibrations, make screw post 4 can be in sleeve 3 back-and-forth movement, second spring 15 can provide the buffer force for screw post 4 and make and bore the body and can receive fine shock attenuation effect, through setting up first sliding ring 9 and first spout, first sliding ring 9 can be stable moves about in first spout, because the threaded rod can be stable move about in sleeve 3, and can drive the stable rotation of sleeve 3 through first sliding ring 9 when screw post 4 is rotatory.
Wherein, the left surface fixedly connected with rubber pad 2 of clamp plate 1, the shape of clamp plate 1 is circular, and the shape of rubber pad 2 is the ring shape, and through-hole 16 has been seted up to the left surface of clamp plate 1, and through-hole 16 is located the inboard of rubber pad 2, and through setting up clamp plate 1 and rubber pad 2, clamp plate 1 can push down the object, and rubber pad 2 can increase the coefficient of friction between object and the clamp plate 1 simultaneously, therefore the drill bit can not lead to the drill bit to produce the displacement because of producing vibrations when getting the object drilling.
Wherein, spring beam 13 includes first spring 138 and telescopic link 139, first spring 138 cover is established at the surface of telescopic link 139, and first spring 138 and telescopic link 139 about both ends respectively with motor 8's right flank and the right flank fixed connection who holds the chamber 11 inner wall, through setting up spring beam 13, can produce the shaking force when the drill bit is drilled, the shaking force can be transmitted for motor 8, motor 8 receives that vibrations can be produced before and after rocking, spring beam 13 can utilize self elasticity extension or shrink this moment, provide certain cushion force for motor 8, make motor 8 can receive the shock attenuation effect.
Wherein, the spacing groove has all been seted up to the upper surface and the lower surface that hold the chamber 11 inner wall, and the spacing inslot is provided with foam-rubber cushion 10, and a plurality of bloop has evenly been seted up to the surface of foam-rubber cushion 10, the quantity of foam-rubber cushion 10 is four, and per two foam-rubber cushion 10 symmetries set up both sides around first sliding ring 9, through setting up foam-rubber cushion 10, foam-rubber cushion 10 can absorb the noise that motor 8 during operation produced, avoid electric drill body 7 during operation to take place too big noise and cause the influence to people.
Wherein, hold the equal fixedly connected with water pocket 12 in the front and the back of 11 inner walls in chamber, and be provided with the coolant liquid in the water pocket 12, and the opposite face of two water pockets 12 all with the surface laminating of motor 8, through setting up water pocket 12, the heat that the during operation of motor 8 produced can be absorbed to the coolant liquid in water pocket 12, prolongs motor 8's life.
The working principle and the using process of the invention are as follows: after the electric drill is installed, when an electric drill body 7 needs to be used, a twisting ring is screwed to drive a threaded column 4 to rotate, the threaded column 4 can drive a sleeve 3 to move leftwards, the sleeve 3 can drive a pressing plate 1 to move leftwards to press an object, then the electric drill body 7 is controlled to work, when a drill bit drills, vibration force can be generated, the vibration force can be transmitted to a motor 8, the motor 8 shakes before and after being vibrated by the vibration, at the moment, a spring rod 13 can extend or contract by utilizing the elasticity of the spring rod to provide certain buffering force for the motor 8, so that the motor 8 can be subjected to a damping effect, when the motor 8 is vibrated, the vibration force can be transmitted to a drill body, when the drill body is vibrated, a connecting plate 6 can be driven to move forwards and backwards, so that the threaded column 4 can move forwards and backwards in the sleeve 3, a second spring 15 can provide buffering force for the threaded column 4, so that the drill body can be, after the electric drill body 7 finishes working, the screwing threaded column 4 rotates to enable the pressing plate 1 to move rightwards to the initial position.
In order to ensure that the motor can reduce the vibration in the horizontal direction, namely the axial direction, and can eliminate the vibration from the circumferential direction in the vibration process of the electric drill, the embodiment also provides a circumferential buffer mechanism.
Referring to fig. 5, a space is reserved between the inner side wall of the cavity 11 and the second slip ring 14, a circumferential first flange 121 and a circumferential first notch 122 are disposed at a position of the inner side wall of the cavity 11 corresponding to the second slip ring 14, and the first flange is disposed adjacent to the first notch, in this embodiment, the cross section of the first flange 121 is an arc-shaped structure from the edge of the inner side wall of the cavity 11 to the middle portion, the first notch 122 is an arc-shaped structure from the edge of the inner side wall of the cavity 11 to the middle portion, and the first flange and the first notch are in smooth transition. Correspondingly, a circumferential second flange 113 and a second notch 112 are arranged on the outer edge of the second slip ring 14, and the second flange and the second notch are smoothly transited, in this embodiment, the section of the second flange 113 is an arc structure from the edge to the middle part of the second slip ring 14, the second notch 111 is a part from the middle to the near edge of the second slip ring 14, and the edge of the second slip ring is used as a flange.
The first protrusion 121 corresponds to the second recess 112, and a first space is formed therebetween, and the second protrusion 113 corresponds to the first recess 122, and a second space is formed therebetween. An annular first clamping ring 131 is arranged in the first space, the first clamping ring 131 is clamped on the outer circumference of the second sliding ring 14, and the first clamping ring 131 is contacted with the surfaces of the first flange 121 and the second notch 112. An annular second tightening ring 132 is provided in the second space, and is engaged with the outer circumference of the second slip ring 14, and the second tightening ring 132 is in contact with both the second flange 113 and the surface of the first recess 122. In the area between the first space and the second space, the distance between the inner side wall of the cavity and the second slip ring is smaller than the outer diameters of the two hoops. In this embodiment, when the second sliding ring along holding the intracavity wall along lateral shifting, squeeze first lock ring and second lock ring, two lock rings produce the deformation of certain degree, and on the one hand have certain cushioning effect to holding the intracavity wall in axial direction, and on the other hand, produce radial contact of appearance and extrusion between lock ring and the first notch of holding the intracavity wall, and the second notch of second sliding ring, can cushion and come from ascending vibrations in the radial direction. Meanwhile, the stress condition of the tightening ring can be detected in real time. The first tight hoop of this embodiment is the same with the structure of the tight hoop of second, and first tight hoop is unclosed loop configuration, and it is the rubber material, for polyethylene or PE material, is provided with motor stress sensor 135 on two tight hoops respectively, and it carries out real-time detection to the stress that the tight hoop receives, still is provided with motor angle sensor 136, and it detects the angle of tight hoop deflection.
In this embodiment, a controller may be further provided to detect the vibration of the electric drill in real time, wherein the controller is connected to the motor in a wireless or wired manner to control the rotation speed of the motor. In the present embodiment, the controller sets the first stress value a1, and the first angle value B1, the motor speed sets the preset values V1, V2, where V1< V2,
when the real-time stress value detected by the motor stress detection sensor is larger than A1, and the real-time angle value detected by the motor angle sensor is larger than B1, the forces of the vibration borne by the motor in the circumferential direction and the radial direction are larger, and the rotating speed of the motor is reduced to be smaller than V1;
when the real-time stress value detected by the motor stress detection sensor is larger than A1, and the real-time angle value detected by the motor angle sensor is smaller than B1, the vibration from the axial direction is large, the vibration in the radial direction is small, the electric drill is properly recovered, and meanwhile, the rotating speed of the motor is reduced to be smaller than V2.
When the motor stress detection sensor detects that the real-time stress value is smaller than A1, and the motor angle sensor detects that the real-time angle value is larger than B1, the vibration from the radial direction is larger, the vibration in the axial direction is smaller, at the moment, the drilling angle of the electric drill needs to be adjusted, the deviation is avoided, and meanwhile, the rotating speed of the motor is reduced to be smaller than V2.
The controller can be connected with a display to directly display the stress detection value or the angle detection value or the processing result.
As shown in fig. 3, the first slip ring 9 of the present embodiment can stably move left and right in the first sliding groove, the first slip ring 9 surrounds the circumferential direction of the threaded column, the first sliding groove is formed in the inner side wall of the sleeve 3, the inner side wall of the sleeve 3 is provided with the third flange 31 and the third recess 32 at intervals, the outer side wall of the first slip ring 9 is correspondingly provided with the fourth flange 92 and the fourth recess 91 at intervals, and the third tightening ring 93 is arranged in the space between each of the third recess 32 and the fourth recess 91. The third clamping band of this embodiment is an elastic member, such as a rubber member or a plastic member, and the upper end thereof is always in contact with the inner sidewall of the sleeve 3. When the first slip ring 9 moves along the transverse direction, the fourth flange 92 impacts and presses the third flange 31 and the third notch 32 which are sequentially contacted, so that a proper shock absorption effect is achieved; meanwhile, the third clamping band can also buffer the vibration in the radial direction due to the continuous contact with the curved outer side wall of the third flange 31 and the third recess 32. The third hooping can be provided with a strain gauge for detecting the stress of the threaded column, and a third hooping angle sensor for detecting the bending angle of the third hooping is arranged.
The controller is internally provided with a threaded column stress value A2, A1 is larger than A2, a third hooping bending angle B2, B2 is larger than B1, and the strain gauge detects the threaded column stress value;
if the stress value is greater than A2 and less than A1, the rotating speed of the motor is reduced to be less than V2;
if the stress value is larger than A1, the motor is detected according to the above, and if the real-time stress value detected by the motor stress detection sensor is larger than A1 and the real-time angle value detected by the motor angle sensor is larger than B1, the forces of the vibration of the motor and the threaded column in the circumferential direction and the radial direction are larger, and the rotating speed of the motor is reduced to be smaller than V1;
if the bending angle value of the third tightening band is greater than B2 and less than B1, the rotating speed of the motor is reduced to be less than V2;
if the bending angle value of the third tightening ring is larger than B1, the motor detection is carried out according to the motor, and if the motor stress value is larger than A1 and the real-time angle value detected by the motor column angle sensor is larger than B1, the forces of the vibration of the motor and the threaded column in the circumferential direction and the radial direction are larger, and the rotating speed of the motor is smaller than V1.
The invention takes the threaded column as a priority factor, and if the electric drill bears loss, the threaded column can deform firstly, so that the motor is detected firstly, and under the condition that the safety of the threaded column is ensured, the motor is detected again, and the safety of the motor is protected.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an antidetonation electric hand drill, includes the electric drill body, its characterized in that: the front side and the back side of the electric drill body are fixedly connected with connecting plates, a second clamping ring is clamped on the right side face of each connecting plate, a threaded column is connected to an internal thread of each second clamping ring, the left end of each threaded column is fixedly connected with the left side face of the inner wall of the sleeve through a second spring, a rotating shaft is fixedly connected to the left end of the sleeve and sleeved in a bearing, the bearing is clamped on the right side face of the pressing plate, and the threaded columns can move transversely along the sleeves;
the electric drill comprises an electric drill body, and is characterized in that a containing cavity is formed in the electric drill body, a motor is arranged in the containing cavity, the right side surface of the motor is fixedly connected with the right side surface of the inner wall of the containing cavity through a spring rod, an output shaft of the motor is fixedly connected with a drill bit through a connecting column, the connecting column is located in a limiting hole formed in the left side surface of the electric drill body, a second sliding ring is fixed in the circumferential direction of the motor and is connected in a second sliding groove in a sliding mode, the second sliding ring surrounds the circumferential direction of the motor, and a space is reserved;
the outer peripheral surface of the threaded column is fixedly connected with a first sliding ring, the first sliding ring surrounds the threaded column in the circumferential direction, the first sliding ring is connected in a first sliding groove in a sliding mode, the first sliding groove is formed in the inner side wall of the sleeve, and the area of the first sliding groove covers the area corresponding to part of the threaded column and the area corresponding to part of the second spring;
a circumferential first flange and a circumferential first notch are arranged at the position, corresponding to the second sliding ring, of the inner side wall of the cavity, the first flange and the first notch are arranged adjacently, the cross section of the first flange is of an arc structure from the edge of the inner side wall of the cavity to the middle part, a circumferential second flange and a circumferential second notch are arranged on the outer edge of the second sliding ring, and the second flange and the second notch are in smooth transition;
the first flange corresponds to the second notch, a first space is formed between the first flange and the second notch, a second space is formed between the second flange and the first notch, an annular first clamping ring is arranged in the first space and clamped on the outer circumference of the second slip ring, and the surfaces of the first flange and the second notch are in contact; and an annular second clamping ring is arranged in the second space and clamped on the outer circumference of the second sliding ring, and the second clamping ring is in contact with the second flange and the surface of the first notch.
2. An anti-vibration electric hand drill according to claim 1 wherein: the first tightening ring and the second tightening ring are also provided with motor stress sensors for detecting the stress borne by the tightening rings in real time, and motor angle sensors for detecting the deflection angles of the tightening rings;
the electric drill vibration detection device further comprises a controller for detecting the vibration condition of the electric drill in real time, the controller is provided with a first stress value A1 and a first angle value B1, the rotating speed of a motor is provided with preset values V1 and V2, wherein V1 is less than V2,
when the real-time stress value detected by the motor stress detection sensor is greater than A1, and the real-time angle value detected by the motor angle sensor is greater than B1, the forces of the vibration borne by the motor in the circumferential direction and the radial direction are greater, and the rotating speed of the motor is reduced to be less than V1;
when the real-time stress value detected by the motor stress detection sensor is larger than A1, and the real-time angle value detected by the motor angle sensor is smaller than B1, the vibration from the axial direction is large, the vibration in the radial direction is small, the electric drill is properly recovered, and meanwhile, the rotating speed of the motor is reduced to be smaller than V2;
when the motor stress detection sensor detects that the real-time stress value is smaller than A1, and the motor angle sensor detects that the real-time angle value is larger than B1, the vibration from the radial direction is larger, the vibration in the axial direction is smaller, at the moment, the drilling angle of the electric drill needs to be adjusted, the deviation is avoided, and meanwhile, the rotating speed of the motor is reduced to be smaller than V2.
3. An anti-vibration electric hand drill according to claim 2 wherein: the inner side wall of the sleeve is provided with a third flange and a third notch which are spaced, a group of fourth flange and a fourth notch are correspondingly arranged on the outer side wall of the first sliding ring, a third tightening ring is arranged in a space between each third notch and the fourth notch, a strain gauge can be further arranged on the third tightening ring to detect the stress of the threaded column, and a third tightening ring angle sensor is arranged to detect the bending angle of the third tightening ring.
4. An anti-vibration hand held electric drill according to claim 3 wherein: the controller is internally provided with a thread column stress value A2, A1> A2 and a third hooping bending angle B2, B2> B1, and the strain gauge detects the thread column stress value;
if the stress value is greater than A2 and less than A1, the rotating speed of the motor is reduced to be less than V2;
if the stress value is larger than A1, the motor is detected according to the above, and if the real-time stress value detected by the motor stress detection sensor is larger than A1 and the real-time angle value detected by the motor angle sensor is larger than B1, the forces of the vibration of the motor and the threaded column in the circumferential direction and the radial direction are larger, and the rotating speed of the motor is reduced to be smaller than V1;
if the bending angle value of the third tightening band is greater than B2 and less than B1, the rotating speed of the motor is reduced to be less than V2;
if the bending angle value of the third tightening ring is larger than B1, the motor detection is carried out according to the motor, and if the motor stress value is larger than A1 and the real-time angle value detected by the motor column angle sensor is larger than B1, the forces of the vibration of the motor and the threaded column in the circumferential direction and the radial direction are larger, and the rotating speed of the motor is smaller than V1.
5. An anti-vibration electric hand drill according to claim 4 wherein: the left side surface of the pressing plate is fixedly connected with a rubber pad, the pressing plate is circular, the rubber pad is circular, a through hole is formed in the left side surface of the pressing plate, and the through hole is located on the inner side of the rubber pad.
6. An anti-vibration electric hand drill according to claim 5 wherein: the spring rod comprises a first spring and a telescopic rod, the first spring is sleeved on the outer surface of the telescopic rod, and the left end and the right end of the first spring and the left end of the telescopic rod are fixedly connected with the right side face of the motor and the right side face of the inner wall of the accommodating cavity respectively.
7. An anti-vibration hand held electric drill according to claim 6 wherein: the limiting grooves are formed in the upper surface and the lower surface of the inner wall of the accommodating cavity, spongy cushions are arranged in the limiting grooves, a plurality of silencing holes are uniformly formed in the outer surfaces of the spongy cushions, the number of the spongy cushions is four, and every two spongy cushions are symmetrically arranged on the front side and the rear side of the first sliding ring.
8. An anti-vibration electric hand drill according to claim 1 wherein: the front and the back of the inner wall of the accommodating cavity are fixedly connected with water bags, cooling liquid is arranged in the water bags, and the opposite surfaces of the two water bags are attached to the outer surface of the motor.
9. An anti-vibration electric hand drill according to claim 1 wherein: the first notch is of an arc-shaped structure from the edge of the inner side wall of the cavity to the middle part, and the first protruding edge and the first notch are in smooth transition.
10. An anti-vibration electric hand drill according to claim 1 wherein: the cross section of the second flange is in an arc-shaped structure from the edge to the middle part of the second sliding ring, the second notch is from the middle to the part close to the edge of the second sliding ring, and the edge of the second sliding ring is used as a flange.
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| CN201910736527.3A CN110508849B (en) | 2019-08-09 | 2019-08-09 | Anti-seismic handheld electric drill |
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| CN110508849B true CN110508849B (en) | 2020-08-04 |
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| CN111230185B (en) * | 2020-03-31 | 2021-11-02 | 浙江开创电气股份有限公司 | Handheld anti-skid positioning electric drill |
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Application publication date: 20191129 Assignee: Weifang Weida Information Technology Co.,Ltd. Assignor: BENGBU College Contract record no.: X2023980037530 Denomination of invention: A seismic resistant handheld electric drill Granted publication date: 20200804 License type: Common License Record date: 20230704 |
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