CN209958195U

CN209958195U - Simple concrete chiseling device

Info

Publication number: CN209958195U
Application number: CN201920413618.9U
Authority: CN
Inventors: 罗小虎; 韩傲雪; 朱栋
Original assignee: Chongqing City Professional School
Current assignee: Chongqing City Professional School
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-01-17
Anticipated expiration: 2029-03-29

Abstract

A simple concrete chiseling device comprises a shell, a handle, a motor switch, a chuck and a chiseling head, wherein the handle is arranged at the lower part of the shell, the motor switch is arranged on the handle, the motor is arranged inside the shell, and the motor switch is electrically connected with the motor; the chuck comprises a connector and a connecting shaft fixed at the rear part of the connector, the connecting shaft is arranged at the front end of the casing through a bearing, and the rear end of the connecting shaft is in key connection with a rotating shaft of the motor; the front end of the connector is provided with an internal thread, the rear end of the chisel hair head is provided with an external thread matched with the internal thread, the side wall of the connector is provided with a limiting through hole, a limiting pin is arranged at the limiting through hole, and the rear end of the chisel hair head is provided with a pin hole matched with the limiting pin; the utility model has the beneficial technical effects that: the form of the original chiseling machine impacting chiseling is replaced, damage to the interior of concrete is avoided, the structure is simple, the operation is convenient, the air pressure device is not relied on, and the air pressure device can be used only by being connected with a power supply.

Description

Simple concrete chiseling device

Technical Field

The utility model relates to a building construction equipment field specifically is a simple and easy concrete chisel hair device.

Background

In the concrete surface course of construction such as highway, bridge and municipal works, in order to make the construction face of two construction stages bond firmly, often need to carry out the chisel hair processing to the concrete surface, chisel a dent in concrete structure surface promptly, then wash clean with the water, mainly improve the adhesive force on concrete surface, increase post-cast concrete and its adhesive force.

In the traditional roughening method, a sharp striking tool is manually used for striking a piston on the surface of concrete to strike, but the roughening work is large and the efficiency is low by adopting the method.

In the prior art, a utility model with a patent number of CN201620638706.5 discloses a hand-held pneumatic chiseling machine, which comprises a hair body mounting plate, a hand frame, a handle, a piston rod, a chiseling head and a compressed air source; in the scheme, compressed air enters an air cavity in a piston rod from an air inlet through a compressed air source, and the compressed air pushes the piston rod to impact downwards rapidly to drive a chisel head to strike a concrete surface; then the compressed air is discharged through the exhaust hole on the piston rod, the compressed air continuously enters the gap between the piston sleeve and the piston rod through the air inlet hole on the piston sleeve, the stepped return point on the piston rod is pushed to enable the piston rod to move upwards, and the continuous striking of the surface of the chiseling head concrete is realized through the repeated work.

The chiseling machine has large mechanical oscillation force, and the action point is concentrated on the chiseling head, so that the rough surface can be formed on the surface of concrete by easily crushing. However, in the actual use process, especially at some construction parts with high requirements on the quality of concrete, the mechanical oscillation force is easy to be transmitted towards the interior of the concrete along the direction of impact of the chisel head, which may damage the protective layer of the reinforced concrete, and even more seriously, crack damage may be generated in the interior of the concrete, thereby affecting the service life of the concrete and being difficult to meet the requirements on the engineering quality.

And the chiseling machine needs to be specially equipped with an air compression device, is inconvenient to use and has higher cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a convenient to use, avoid causing the simple and easy concrete chisel hair device of damage to concrete inside.

In order to realize the purpose, the following technical scheme is provided:

a simple concrete chiseling device comprises a shell, a handle, a motor switch, a chuck and a chiseling head, wherein the handle is arranged at the lower part of the shell, the motor switch is arranged on the handle, the motor is arranged inside the shell, and the motor switch is electrically connected with the motor; the chuck comprises a connector and a connecting shaft fixed at the rear part of the connector, the connecting shaft is arranged at the front end of the casing through a bearing, and the rear end of the connecting shaft is in key connection with a rotating shaft of the motor; the front end of connector is equipped with the internal thread, and the rear end of chisel hair head is equipped with to the external screw thread that matches with the internal thread, and the lateral wall of connector is equipped with spacing through-hole, and spacing through-hole department is equipped with the spacer pin, and the rear end of chisel hair head is equipped with the pinhole with spacer pin matched with.

The principle of the utility model lies in: the mode that original chisel hair machine passed through air compressor machine compressed air control piston rod and driven the reciprocal striking concrete face of chisel hair head in order to obtain the hair face has been changed, and this scheme drives through the motor and bores the high rotation of hair head, utilizes chisel hair head to draw a way recess at the concrete subaerial to through the effect region that removes chisel hair head, overlap between messenger's recess and the recess, finally form the hair face, in order to reach the effect of chisel hair. By adopting the scheme, the phenomenon that the action point of the original chiseling machine is concentrated on the chiseling head is avoided, and the structure inside the concrete is damaged when the concrete surface forms a rough surface; and an air compression device does not need to be additionally arranged, and the air compressor can be used only by being connected with a power supply.

The utility model has the beneficial technical effects that:

1. the form of the prior impacting chiseling machine is replaced, and the damage to the interior of the concrete is avoided.

2. The structure is simple, the operation is convenient, and the air compressor is not dependent on an air compressor device and can be used only by being connected with a power supply.

3. The installation of the chisel hair head on the chuck is firmer, and the output is not easy to loose.

4. Install the dust cover, cause the raise dust in avoiding the use.

Drawings

Figure 1 is the utility model discloses simple and easy concrete chisel hair device external structure sketch map.

Figure 2 is the utility model discloses simple and easy concrete chisel hair device explosion structure sketch map.

Fig. 3 is a schematic structural diagram of the middle clamping head of the present invention.

Figure 4 is the structure schematic diagram of the middle chisel hair head of the utility model.

Fig. 5 is a schematic structural view of the stop pin of the present invention.

In the figure: the motor comprises a machine shell 1, a handle 2, a motor 3, a motor switch 4, a chuck 5, a scabbling head 6, a connector 7, a connecting shaft 8, a bearing 9, a limiting through hole 10, a limiting pin 11, a pin hole 12, a steel tooth 13, a dust cover 14, a heat dissipation fan 15, a vent groove 16, an auxiliary handle 17 and a rotating shaft 18.

Detailed Description

The following describes the concrete chisel device with reference to the accompanying drawings.

As shown in fig. 1, 2, 3, 4 and 5, a simple concrete chiseling device comprises a casing 1, a handle 2, a motor 3, a motor switch 4, a chuck 5 and a chiseling head 6, wherein the handle 2 is arranged at the lower part of the casing 1, the motor switch 4 is arranged on the handle 2, the motor 3 is arranged inside the casing 1, and the motor switch 4 is electrically connected with the motor 3; the chuck 5 comprises a connector 7 and a connecting shaft 8 fixed at the rear part of the connector 7, the connecting shaft 8 is arranged at the front end of the casing 1 through a bearing 9, and the rear end of the connecting shaft 8 is in key connection with a rotating shaft 18 of the motor 3; the front end of the connector 7 is provided with an internal thread, the rear end of the chisel edge head 6 is provided with an external thread matched with the internal thread, the side wall of the connector 7 is provided with a limit through hole 10, a limit pin 11 is arranged at the position of the limit through hole 10, and the rear end of the chisel edge head 6 is provided with a pin hole 12 matched with the limit pin 11.

The handle 2 is connected with the casing 1 through screws, wires for connecting the motor switch 4 and the motor 3 can be accommodated in the handle 2, the motor switch 4 is fixed on the handle 2 through screws, motor mounting frames are fixed in an upper casing and a lower casing of the casing 1, and the motor 3 is clamped between the upper motor mounting frame and the lower motor mounting frame, so that the disassembly is very convenient; the connecting shaft 8 is welded at the rear part of the connecting head 7; the inner ring of the bearing 9 is welded on the outer wall of the connecting shaft 8, and the outer ring of the bearing 9 is fixed at the front end of the machine shell 1 through a screw; the rear end of the connecting shaft 8 is connected with a rotating shaft 18 of the motor 3 through a spline, namely a longitudinal key is arranged on the outer surface of the rotating shaft, and a corresponding key groove is arranged at the rear end of the connecting shaft 8; the rear end of the burr-chiseling head 6 is in threaded connection with the front end of the connecting head 7; the limiting through hole 10 is manufactured in a stamping mode; the bottom of the limiting pin 11 penetrates through the limiting through hole 10 and is inserted into a pin hole 12 at the rear end of the chisel hair head 6, and the chisel hair head 6 is further fixed through the limiting pin 11, so that the situation that the chisel hair head 6 is loosened in the process of scribing a groove on concrete is prevented; in this embodiment, three motors 3 are provided in the casing 1, and three chucks 5 and three burrs 6 are provided correspondingly, and the distance between the outer walls of two adjacent connectors 7 is greater than twice the length of the exposed connectors 7 of the limit pins 11, so as to prevent the connectors 7 from being scraped and touched between the limit pins 11 during the rotation process.

The scheme changes the mode that the original chiseling machine controls the piston rod to drive the chiseling head to impact the concrete surface in a reciprocating mode through air compressor compressed air so as to obtain the rough surface, but drives the chiseling head 6 to rotate highly through the motor 3, utilizes the chiseling head 6 to mark a groove on the concrete ground, and moves the action area of the chiseling head 6 so as to overlap the groove and the groove to finally form the rough surface so as to achieve the effect of chiseling; the scheme avoids the damage to the structure in the concrete caused by the fact that the action points of the original chiseling machine are concentrated on the chiseling head 6 and the rough surface is formed on the concrete surface; an air compression device is not required to be additionally arranged, and the operation can be realized only by connecting a power supply; the starting and the closing of the chiseling device can be controlled through a motor switch, and the use is convenient.

Further, as shown in fig. 4, the chisel hair head 6 is provided with steel teeth 13 with different distances from the center of the chisel hair head 6; the steel teeth 13 and the scabbling head 6 are integrally formed; the steel teeth at different positions can enable the scabbling head to form a plurality of grooves when the scabbling head moves on the concrete surface; the action area of the hair-chiseling head is moved, which is beneficial to quickly forming a hair surface.

Further, as shown in fig. 1 and 2, a dust cover 14 is further included, and the dust cover 14 is sleeved on the front side of the chassis 1 and fixed on the chassis 1 through bolts; the dust cover is favorable for reducing the dust generated by the device in use.

Further, as shown in fig. 2, a heat dissipation fan 15 is disposed in the casing 1, the heat dissipation fan 15 is connected to the shaft of the motor 3, and a ventilation slot 16 is disposed on the casing of the casing 1; the middle part of the heat radiation fan 15 is fixedly clamped at the rear end of a rotating shaft 18 of the motor 3; along with motor pivoted heat dissipation fan can distribute away the heat that the motor gived off through the air channel, avoids the motor operation overheated, has prolonged the life of motor.

Further, as shown in fig. 1 and 2, an auxiliary handle 17 is fixed to the rear of the housing 1. The auxiliary handle 17 is fixed at the rear part of the machine shell 1 through screws; a user can hold the auxiliary handle 17 to operate, so that a certain pressure can be conveniently applied to the scabbling head downwards to scratch grooves with different depths; but also has the function of stable control.

In this embodiment, the motor is a brushless motor used in BS SB 18 LTX BL Quick, and this specific model is not the scope of the present invention.

Claims

1. The simple concrete chiseling device is characterized by comprising a casing (1), a handle (2), a motor (3), a motor switch (4), a chuck (5) and a chiseling head (6), wherein the handle (2) is arranged at the lower part of the casing (1), the motor switch (4) is arranged on the handle (2), the motor (3) is arranged inside the casing (1), and the motor switch (4) is electrically connected with the motor (3); the chuck (5) comprises a connector (7) and a connecting shaft (8) fixed at the rear part of the connector (7), the connecting shaft (8) is arranged at the front end of the casing (1) through a bearing (9), and the rear end of the connecting shaft (8) is in key connection with a rotating shaft (18) of the motor (3); the front end of connector (7) is equipped with the internal thread, and the rear end of chisel hair head (6) is equipped with to the external screw thread that matches with the internal thread, and the lateral wall of connector (7) is equipped with spacing through-hole (10), and spacing through-hole (10) department is equipped with spacer pin (11), and the rear end of chisel hair head (6) is equipped with pinhole (12) with spacer pin (11) matched with.

2. A simple concrete chiseling device as defined in claim 1, wherein the chiseling head (6) is provided with steel teeth (13) having different distances from the center of the chiseling head (6).

3. The simple concrete chiseling device as claimed in claim 1 or 2, further comprising a dust cover (14), wherein the dust cover (14) is fitted over the front side of the machine case (1) and fixed to the machine case (1) by bolts.

4. The simple concrete chiseling device as claimed in claim 1 or 2, wherein a heat dissipation fan (15) is arranged in the machine shell (1), the heat dissipation fan (15) is connected with the motor (3) through a shaft, and a ventilation groove (16) is formed in the shell of the machine shell (1).

5. A simple concrete chiseling device as defined in claim 3, wherein a heat radiation fan (15) is provided in the casing (1), the heat radiation fan (15) is connected with the motor (3) by a shaft, and a ventilation groove (16) is provided on the casing of the casing (1).

6. A simple concrete chiseling device as defined in claim 1, 2 or 5, wherein an auxiliary handle (17) is fixed to the rear of the machine case (1).

7. A simple concrete chiseling device as defined in claim 3, wherein an auxiliary handle (17) is fixed to the rear of the machine case (1).

8. A simple concrete chiseling device as defined in claim 4, wherein an auxiliary handle (17) is fixed to the rear of the machine case (1).