CN113059207A

CN113059207A - Drilling machine with overload automatic protection for building construction

Info

Publication number: CN113059207A
Application number: CN202110430577.6A
Authority: CN
Inventors: 徐丽娜
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-07-02

Abstract

The invention relates to the technical field of building construction equipment, and discloses an overload automatic protection drilling machine for building construction, which comprises a working shaft, wherein the outer side of the working shaft is fixedly connected with uniformly distributed first springs, the inner side of each first spring is fixedly connected with a starting block, the inner part of each starting block is fixedly connected with a dielectric plate, the outer side of the working shaft is fixedly connected with uniformly distributed positive plates, and the outer side of the working shaft is fixedly connected with uniformly distributed negative plates. This drilling machine of overload automatic protection for construction, through the cooperation axle, the electro-magnet, mutually supporting of fixed axle, when the electro-magnet circular telegram, the magnetic in the inside magnetic powder inslot of cooperation axle forms the magnetic chain under the effect in electro-magnet magnetic field, increase the interact between cooperation axle and fixed axle, it is rotatory that the work axle is followed to the cooperation axle, and take place relative rotation with the fixed axle, the magnetic chain hinders the rotation of cooperation axle, thereby offset the rotatory kinetic energy of work axle, the overload automatic protection function of product has been realized, the security of product use has been guaranteed.

Description

Drilling machine with overload automatic protection for building construction

Technical Field

The invention relates to the technical field of building construction equipment, in particular to an overload automatic protection drilling machine for building construction.

Background

A drilling machine is a general term for machines and equipment that leave a cylindrical hole or hole in an object by means of rotary cutting or rotary extrusion using a tool harder and sharper than the object, and during the use of the drilling machine, the rotation speed of a drill bit exceeds the normal working range, which leads to an increase in the risk of use, and is accompanied by problems of accelerated wear and reduced production quality, which are not favorable for users.

In the use of drilling machine for the construction, because the fluctuation of current-voltage or the abrupt change of drilling machine load in the circuit, can lead to the rotational speed of drilling machine to surpass the condition of normal operating range, if not in time reduce rotational speed, can lead to the stress between drill bit and the machined part to surpass reasonable scope to accelerate the wearing and tearing of product, also can increase user's use risk simultaneously, led to the fact the loss for the user, can not satisfy user's user demand.

Therefore, we propose a drilling machine with automatic overload protection for building construction to solve the above problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the automatic overload protection drilling machine for building construction, which has the advantage of automatic rotary overload protection and solves the problem that the common drilling machine cannot automatically protect overload.

(II) technical scheme

In order to realize the purpose of the automatic protection of the rotation overload, the invention provides the following technical scheme: an overload automatic protection drilling machine for building construction comprises a working shaft, wherein a first spring which is uniformly distributed is fixedly connected to the outer side of the working shaft, a starting block is fixedly connected to the inner side of the first spring, a dielectric plate is fixedly connected to the inner part of the starting block, a positive plate which is uniformly distributed is fixedly connected to the outer side of the working shaft, a negative plate which is uniformly distributed is fixedly connected to the outer side of the working shaft, piezoresistors which are uniformly distributed are fixedly connected to the outer side of the working shaft, electrode columns which are uniformly distributed are fixedly connected to the inner side of the working shaft, a liquid cavity is formed in the working shaft, a matching shaft is movably connected to the inner part of the working shaft, a second spring which is uniformly distributed is fixedly connected to the outer side of the matching shaft, a control block is movably connected to the outer side of the second spring, the three outer sides of the spring are fixedly connected with matching blocks, the outer sides of the matching shafts are fixedly connected with matching contact rings which are uniformly distributed, and the inner parts of the matching shafts are movably connected with fixing shafts.

Preferably, the working shaft is made of metal materials, the working shaft comprises a structure body, a rotating motor and a control assembly, eight starting grooves which are uniformly distributed are formed in the outer side of the working shaft, the strength of the working shaft is increased, the service life of the working shaft is prolonged, and the drilling function of a product is realized through rotation of the working shaft.

Preferably, the starting block is made of a metal material, the starting block comprises a moving block and a balancing weight, the surface of the starting block is smooth, the length of the starting block is greater than the height of the positive plate, and when the working shaft rotates, the starting block overcomes the elastic action of a spring to move under the action of centrifugal force to drive the dielectric plate to change the relative area between the positive plate and the negative plate.

Preferably, the opposite face shape of positive plate and negative plate is the same, and the height that highly all is less than the dielectric plate of positive plate and negative plate, negative plate and piezo-resistor electric property link to each other, thereby the relative area between positive plate and the negative plate is changed in the removal of dielectric plate, and when the relative area between positive plate and negative plate reached the design value, piezo-resistor both ends voltage reached operating voltage, and piezo-resistor work signals of giving out electricity, and control electromagnet work has realized the automatic control function of product.

Preferably, the interior of the liquid cavity is movably connected with electrorheological fluid, the electrorheological fluid mainly comprises base liquid, solid particles and additives, the electrorheological fluid is in a solid state under the action of an electric field, and when the electrode column is electrified, the electrorheological fluid in the liquid cavity is changed from a liquid state into a solid state under the action of the electric field, so that the working shaft and the matching shaft form an integral rotation.

Preferably, the cooperation axle is metal material, and evenly distributed's control tank and cooperation groove have been seted up in the outside of cooperation axle, and the inside fixedly connected with guide bar of control tank has increased the intensity of cooperation axle, has prolonged the life of cooperation axle, the cooperation of being convenient for between cooperation axle and control block, cooperation piece each other.

Preferably, the electromagnet comprises a magnetic body, a surrounding coil and a control assembly, the opposite faces of the electromagnet and the permanent magnet are same in magnetism, the magnetic force between the electromagnet and the permanent magnet is larger than the elastic force of the spring II, when the electromagnet is electrified, the electromagnet generates a magnetic field, the electromagnet and the permanent magnet interact with each other due to the fact that the opposite faces are same in magnetism, the control block is driven to overcome the elastic force of the spring II to move, and the automatic control function of a product is achieved.

Preferably, the fixed shaft is matched with the matching shaft in shape, the magnetic powder groove is formed in the matching shaft, the magnetic powder is movably connected to the outer side of the fixed shaft and is uniformly distributed, the magnetic powder forms a magnetic chain under the action of an electromagnet magnetic field, the friction resistance between the fixed shaft and the matching shaft is increased, the rotating speed of the matching shaft is rapidly reduced, and the overload protection function of a product is realized.

(III) advantageous effects

Compared with the prior art, the invention provides an overload automatic protection drilling machine for building construction, which has the following beneficial effects:

1. this drilling machine of overload automatic protection for construction, through the cooperation axle, the electro-magnet, mutually supporting of fixed axle, when the electro-magnet circular telegram, the magnetic in the inside magnetic powder inslot of cooperation axle forms the magnetic chain under the effect in electro-magnet magnetic field, increase the interact between cooperation axle and fixed axle, it is rotatory that the work axle is followed to the cooperation axle, and take place relative rotation with the fixed axle, the magnetic chain hinders the rotation of cooperation axle, thereby offset the rotatory kinetic energy of work axle, the overload automatic protection function of product has been realized, the security of product use has been guaranteed.

2. This drilling machine of overload automatic protection for construction, through dielectric medium board, the positive plate, the negative plate, piezo-resistor mutually supports, the centrifugal force that the starting block receives is greater than a spring elastic action, the starting block drives dielectric medium board and removes, make the relative area between positive plate and the negative plate increase to the design value, piezo-resistor both ends voltage reaches operating voltage, piezo-resistor circular telegram sends the work of signal of telecommunication control electro-magnet, the automatic control function of product has been realized, the monitoring function of product to the rotational speed has been guaranteed, protect function has been triggered.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partially enlarged view of the portion A of FIG. 1 according to the present invention;

FIG. 3 is a partially enlarged view of the portion B shown in FIG. 1 according to the present invention;

FIG. 4 is a schematic view of a partially enlarged structure of the portion C in FIG. 1 according to the present invention.

In the figure: 1. a working shaft; 2. a first spring; 3. a start block; 4. a dielectric plate; 5. a positive plate; 6. a negative plate; 7. a voltage dependent resistor; 8. an electrode column; 9. a liquid chamber; 10. a mating shaft; 11. a second spring; 12. a control block; 13. a permanent magnet; 14. an electromagnet; 15. a third spring; 16. a matching block; 17. a mating contact ring; 18. and fixing the shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an overload automatic protection drilling machine for building construction comprises a working shaft 1, wherein the working shaft 1 is made of metal material, the working shaft 1 comprises a structural body, a rotating motor and a control assembly, eight starting grooves which are uniformly distributed are formed in the outer side of the working shaft 1, the strength of the working shaft 1 is increased, the service life of the working shaft 1 is prolonged, the drilling function of a product is realized through the rotation of the working shaft 1, springs 2 which are uniformly distributed are fixedly connected to the outer side of the working shaft 1, starting blocks 3 are fixedly connected to the inner sides of the springs 2, the starting blocks 3 are made of metal material, each starting block 3 comprises a moving block and a balancing weight, the surface of each starting block 3 is smooth, the length of each starting block 3 is larger than the height of a positive plate 5, when the working shaft 1 rotates, each starting block 3 overcomes the elastic force action of the springs 2 to move under the action of centrifugal force, and drives a dielectric plate 4 to change the relative area, the inside fixedly connected with dielectric plate 4 of start-up

piece

3, 1 outside fixedly connected with evenly distributed's of working shaft

positive plate

5, 1 outside fixedly connected with evenly distributed's of working shaft negative plate 6, positive plate 5 is the same with negative plate 6's opposite face shape, positive plate 5 all is less than dielectric plate 4's height with negative plate 6's height, negative plate 6 links to each other with piezo-resistor 7 electrical property, thereby dielectric plate 4 removes the relative area who changes between positive plate 5 and negative plate 6, when the relative area between positive plate 5 and negative plate 6 reaches the design value, piezo-resistor 7 both ends voltage reaches operating voltage, piezo-resistor 7 work signals of giving out electricity, 14 works of control electro-magnet, the automatic control function of product has been realized.

The outer side of the working shaft 1 is fixedly connected with piezoresistors 7 which are uniformly distributed, the inner side of the working shaft 1 is fixedly connected with electrode columns 8 which are uniformly distributed, a liquid cavity 9 is formed in the working shaft 1, electrorheological fluid is movably connected in the liquid cavity 9 and mainly comprises base fluid, solid particles and additives, the electrorheological fluid is in a solid state under the action of an electric field, when the electrode columns 8 are electrified, the electrorheological fluid in the liquid cavity 9 is changed from a liquid state into a solid state under the action of the electric field, so that the working shaft 1 and the matching shaft 10 form an integral rotation, the working shaft 1 is movably connected with the matching shaft 10, the matching shaft 10 is made of a metal material, uniformly distributed control grooves and matching grooves are formed in the outer side of the matching shaft 10, guide rods are fixedly connected in the control grooves, the strength of the matching shaft 10 is increased, the service life of the matching shaft 10 is prolonged, and the matching shaft 10 and the, The matching blocks 16 are matched with each other, and the outer side of the matching shaft 10 is fixedly connected with a second spring 11 which is uniformly distributed.

The outer side of the second spring 11 is movably connected with a control block 12, the inner part of the control block 12 is fixedly connected with a permanent magnet 13, the inner part of the matching shaft 10 is fixedly connected with electromagnets 14 which are uniformly distributed, each electromagnet 14 comprises a magnetic body, a surrounding coil and a control component, the magnetic properties of opposite surfaces of the electromagnet 14 and the permanent magnet 13 are the same, the magnetic force between the electromagnet 14 and the permanent magnet 13 is larger than the elastic force of the second spring 11, when the electromagnet 14 is electrified, the electromagnet 14 generates a magnetic field, the electromagnet 14 and the permanent magnet 13 interact due to the same magnetic properties of the opposite surfaces, the control block 12 is driven to overcome the elastic force of the second spring 11 to move, the automatic control function of a product is realized, the outer side of the matching shaft 10 is fixedly connected with a third spring 15 which is uniformly distributed, the outer side of the third spring 15 is fixedly connected, the fixed shaft 18 is matched with the matching shaft 10 in shape, a magnetic powder groove is formed in the matching shaft 10, magnetic powder is movably connected to the outer side of the fixed shaft 18 and is distributed uniformly, magnetic powder forms a magnetic linkage under the action of a magnetic field of the electromagnet 14, frictional resistance between the fixed shaft 18 and the matching shaft 10 is increased, the rotating speed of the matching shaft 10 is reduced rapidly, and the overload protection function of a product is achieved.

The working principle is as follows: when the product normally works, the rotation speed of the working shaft 1 is in a normal working range, the centrifugal force borne by the starting block 3 is smaller than the elastic action of the first spring 2, the relative area between the positive plate 5 and the negative plate 6 is smaller, the voltage at two ends of the piezoresistor 7 is smaller than the working voltage, the electromagnet 14 is powered off, the electrode column 8 is powered off, when the product has a rotation speed overload condition, the rotation speed of the working shaft 1 is larger than the normal working range, through the mutual matching of the dielectric plate 4, the positive plate 5, the negative plate 6 and the piezoresistor 7, the centrifugal force borne by the starting block 3 is larger than the elastic action of the first spring 2, the starting block 3 drives the dielectric plate 4 to move, so that the relative area between the positive plate 5 and the negative plate 6 is increased to a designed value, the voltage at two ends of the piezoresistor 7 reaches the working voltage, the piezoresistor, the monitoring function of the product on the rotating speed is ensured, and the protection function is triggered;

through the mutual matching of the electromagnet 14 and the permanent magnet 13, the electromagnet 14 is electrified to generate a magnetic field and interacts with the permanent magnet 13 to overcome the elastic force of the second spring 11, the control block 12 is driven to move, meanwhile, through the mutual matching of the liquid cavity 9 and the matching block 16, the matching block 16 overcomes the elastic force of the third spring 15 to move inwards and contacts with the matching contact ring 17 to send out an electric signal, the electrode column 8 is controlled to be electrified, electrorheological fluid in the liquid cavity 9 is changed into a solid state under the action of the electric field, so that the working shaft 1 and the matching shaft 10 form a whole, and the automatic control function of a product is realized;

through the cooperation axle 10, electro-magnet 14, mutually supporting of fixed axle 18, when electro-magnet 14 circular telegram, the magnetic in the inside magnetic powder inslot of cooperation axle 10 forms the magnetic flux linkage under the effect in electro-magnet 14 magnetic field, increase the interact between cooperation axle 10 and fixed axle 18, cooperation axle 10 is rotatory along with working shaft 1, and take place relative rotation with fixed axle 18, the magnetic flux linkage hinders the rotation of cooperation axle 10, thereby offset the rotatory kinetic energy of working shaft 1, the automatic protect function of transshipping of product has been realized, the security of product use has been guaranteed.

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

1. The utility model provides a drilling machine of overload automatic protection for construction, includes working shaft (1), its characterized in that: the outer side of the working shaft (1) is fixedly connected with uniformly distributed first springs (2), the inner side of the first springs (2) is fixedly connected with a starting block (3), a dielectric plate (4) is fixedly connected inside the starting block (3), uniformly distributed positive plates (5) are fixedly connected outside the working shaft (1), uniformly distributed negative plates (6) are fixedly connected outside the working shaft (1), uniformly distributed piezoresistors (7) are fixedly connected outside the working shaft (1), uniformly distributed electrode columns (8) are fixedly connected inside the working shaft (1), a liquid cavity (9) is formed inside the working shaft (1), a matching shaft (10) is movably connected inside the working shaft (1), uniformly distributed second springs (11) are fixedly connected outside the matching shaft (10), a control block (12) is movably connected outside the second springs (11), and a permanent magnet (13) is fixedly connected inside the control block (12), the matching shaft (10) is fixedly connected with uniformly distributed electromagnets (14) inside, the outer side of the matching shaft (10) is fixedly connected with uniformly distributed springs III (15), the outer side of the springs III (15) is fixedly connected with matching blocks (16), the outer side of the matching shaft (10) is fixedly connected with uniformly distributed matching contact rings (17), and the matching shaft (10) is movably connected with a fixed shaft (18) inside.

2. The drilling machine for automatic overload protection in building construction according to claim 1, wherein: the working shaft (1) is made of metal materials, the working shaft (1) comprises a structure body, a rotating motor and a control assembly, and eight starting grooves which are uniformly distributed are formed in the outer side of the working shaft (1).

3. The drilling machine for automatic overload protection in building construction according to claim 1, wherein: the starting block (3) is made of metal materials, the starting block (3) comprises a moving block and a balancing weight, the surface of the starting block (3) is smooth, and the length of the starting block (3) is larger than the height of the positive plate (5).

4. The drilling machine for automatic overload protection in building construction according to claim 1, wherein: the opposite surfaces of the positive plate (5) and the negative plate (6) are the same in shape, the heights of the positive plate (5) and the negative plate (6) are smaller than that of the dielectric plate (4), and the negative plate (6) is electrically connected with the piezoresistor (7).

5. The drilling machine for automatic overload protection in building construction according to claim 1, wherein: the interior of the liquid cavity (9) is movably connected with electrorheological fluid, the electrorheological fluid mainly comprises base liquid, solid particles and additives, and the electrorheological fluid is in a solid state under the action of an electric field.

6. The drilling machine for automatic overload protection in building construction according to claim 1, wherein: the matching shaft (10) is made of metal materials, the outer side of the matching shaft (10) is provided with control grooves and matching grooves which are evenly distributed, and guide rods are fixedly connected inside the control grooves.

7. The drilling machine for automatic overload protection in building construction according to claim 1, wherein: the electromagnet (14) comprises a magnetic body, a surrounding coil and a control assembly, the opposite surfaces of the electromagnet (14) and the permanent magnet (13) are same in magnetism, and the magnetic force between the electromagnet (14) and the permanent magnet (13) is larger than the elastic force of the second spring (11).

8. The drilling machine for automatic overload protection in building construction according to claim 1, wherein: the fixed shaft (18) is matched with the matching shaft (10) in shape, a magnetic powder groove is formed in the matching shaft (10), and magnetic powder is uniformly distributed and movably connected to the outer side of the fixed shaft (18).