CN105856438A - Concrete cutting machine and method thereof - Google Patents

Abstract

The invention discloses a concrete cutting machine and a method thereof. It includes four sets of lifting screw, cutting size control module, cutting line, bracket, gear transmission unit, and stepping motor. Use the cutting line movement to cut the concrete. According to the size of the concrete to be cut, control the stepper motor to drive four sets of variable pitch screw rods to move simultaneously through the gear transmission unit, adjust the cutting width of the concrete, and drive the motor to make the cutting line move. The motor simultaneously Drive the four sets of lifting screw to rotate to make the concrete cutter descend to cut concrete. After the cutting is completed, the motor reverses to drive the four sets of lifting screw to rotate to lift the concrete cutter to the original position and complete the cutting. The invention has simple structure and low production cost, and the production of concrete with different sizes can be realized only by changing the position of the pulley through a stepping motor. In addition, the circular movement of the cutting line solves the problem of large vibration and noise generated by the cutting saw when cutting back and forth.

Description

Concrete cutting machine and method thereof

technical field

The invention relates to cutting devices, in particular cutting equipment for concrete.

Background technique

Concrete cutting is an important process in the production process of concrete blocks. The process is arranged after the concrete is solidified and formed, and the concrete cutting machine is used to cut the freshly laid concrete, so as to obtain block concrete that meets certain requirements in size.

Existing concrete cutting mostly adopts sawing, and the back and forth movement of the cutting saw will generate relatively large vibration and noise. Usually, one motor can only control the movement of one tool, which makes the cutting machine complex in structure, high in production cost, and relatively high in maintenance and repair costs. In addition, the commonly used concrete cutting machine can only cut concrete with a fixed size. If it is necessary to cut concrete of different sizes, the concrete cutting machine needs to be replaced, which brings a lot of inconvenience to the production of concrete blocks.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a concrete cutting machine and its usage method.

A concrete cutting machine includes four sets of lifting screw rods, brackets, cutting wires, cutting size control module, gear transmission unit, stepping motor, first motor and second motor, wherein the cutting size control unit includes four sets of variable pitch wires Rod, twelve sets of lead units, each set of lead units is composed of two upper and lower screw sliders, wire pulleys and a pair of radial ball bearings, the gear transmission unit is composed of four working gears, four transmission gears and a central gear ; Four sets of lifting screw rods pass through the four holes at the four corners of the bracket, the cutting wire is wound on the pulling pulleys of the twelve sets of lead wire units, the variable pitch screw rod is hinged with the bracket and passes through the screw slider, and the screw slider and the bracket The groove on the top is matched, the outer ring of the radial ball bearing is fixed with the screw slider, the inner ring of the radial ball bearing is fixed with the pulley, the working gear is fixed with the variable pitch screw, the transmission gear is matched with the working gear and connected to the bracket, and the center The gears are simultaneously matched with the four transmission gears and connected with the bracket, the stepping motor is fixed on the bracket and connected with the central gear, the first motor is connected with the cutting line, and the second motor is connected with four sets of lifting screw rods at the same time.

Further, the variable pitch screw rod is divided into six sections, and the pitch ratio of each section from the near working gear end to the far working gear end is 1:2:3:4:5:6.

Further, the surface of the cutting line has barbs.

Further, the cutting lines bypass two sets of lead wire units at the same time, and the working areas of the cutting lines are always parallel and at equal distances.

The using method of described concrete cutting machine comprises the following steps:

1) According to the size of the concrete to be cut, the stepper motor is controlled to drive four sets of variable pitch screw rods to move simultaneously through the gear transmission unit, so as to adjust the cutting width of the concrete;

2) The first motor drives the cutting line to move;

3) The second motor simultaneously drives four sets of lifting screw rods to rotate to lower the concrete cutter to cut concrete;

4) After the cutting is completed, the second motor rotates in reverse to drive the four sets of lifting screw to rotate to lift the concrete cutting machine to the original position and complete the cutting.

With the present invention, only one motor is needed to complete the movement of the cutting line, the structure is simple, and the production cost is low. For the production of concrete with different sizes, it can be realized only by changing the position of the pulley through the stepping motor. In addition, the circular movement of the cutting line solves the problem of large vibration and noise generated by the cutting saw when cutting back and forth.

Description of drawings

Fig. 1 is the overall schematic diagram of concrete cutting machine of the present invention;

Fig. 2 is the schematic diagram of the cutting size control module and the gear transmission unit of the concrete cutting machine of the present invention;

Fig. 3 is the schematic diagram of the lead wire unit of the concrete cutting machine of the present invention;

Fig. 4 is the schematic diagram of the gear transmission unit of the concrete cutting machine of the present invention;

Fig. 5 is the schematic diagram of the variable pitch screw rod of the concrete cutting machine of the present invention;

In the figure, four sets of lifting screw 1, bracket 2, cutting line 3, cutting size control module 4, gear transmission unit 5, stepper motor 6, four sets of variable pitch screw 7, twelve sets of lead wire units 8, a pair of Screw rod slider 9, wire pulley 10, a pair of radial ball bearings 11 form, four working gears 12, four transmission gears 13, central gear 14.

detailed description

As shown in Figures 1, 2, 3, 4, and 5, the concrete cutting machine includes four sets of lifting screw 1, bracket 2, cutting line 3, cutting size control module 4, gear transmission unit 5, stepping motor 6, the first Motor and second motor, wherein, cutting size control unit 4 comprises four groups of variable pitch screw rods 7, twelve groups of lead wire units 8, and each group of lead wire units is composed of two screw rod sliders 9 up and down, wire pulleys 10 and a pair of Composed of radial ball bearings 11, the gear transmission unit 5 is composed of four working gears 12, four transmission gears 13 and a central gear 14; four sets of lifting screw rods 1 pass through four holes at the four corners of the bracket 2, and the cutting line 3 is wound on On the pulleys 10 of twelve groups of lead wire units 8, the variable pitch screw 7 is hinged to the bracket 2 and passes through the screw slider 9, the screw slider 9 matches the groove on the bracket 2, and the outer ring of the radial ball bearing 11 Fixed with the screw rod slider, the inner ring of the radial ball bearing 11 is fixed with the pulley 10, the working gear 12 is fixed with the variable pitch screw 7, the transmission gear 13 is matched with the working gear 12 and connected with the bracket 2, the central gear 14 is connected with the four Two transmission gears 13 cooperate simultaneously and link to each other with support 2, and stepper motor 6 is fixed on support 2 and links to each other with central gear 14, and the first motor links to each other with cutting line, and the second motor links to each other with four groups of lifting screw mandrels simultaneously.

As shown in Figure 5, the variable-pitch screw rod 7 is equally divided into six sections, and the pitch ratio of each section from the 12 end of the near working gear section to the 12 end of the far working gear section is 1:2:3:4:5:6. When the screw pitch screw 7 rotates, the moving distances of the screw sliders 9 on each section of the variable pitch screw 7 are 1:2:3:4:5:6, so that the two adjacent screw sliders 9 The distance increases by the same value.

As shown in FIG. 2 , the surface of the cutting line 3 has barbs, so that the cutting line 3 can cut the concrete while it is moving.

As shown in FIG. 2 , the cutting line 3 bypasses two sets of lead wire units 8 at the same time and the working areas of the cutting line 3 are always parallel and at equal distances.

The method of using the concrete cutter includes the following steps:

1) According to the size of the concrete to be cut, the stepper motor 6 is controlled to drive four groups of variable-pitch screw rods 7 to move simultaneously through the gear transmission unit 5, so as to adjust the cutting width of the concrete;

2) The first motor drives the cutting line 3 to move;

3) The second motor simultaneously drives four sets of lifting screw 1 to rotate to lower the concrete cutter to cut concrete;

4) After descending to the required position, the second motor rotates in reverse to drive the four sets of lifting screw 1 to rotate to lift the concrete cutter to the original position and complete the cutting.

Claims (5)

1. A concrete cutting machine, characterized in that it includes four sets of lifting screw rods (1), brackets (2), cutting lines (3), cutting size control module (4), gear transmission unit (5), stepping motor (6), the first motor and the second motor, wherein the cutting size control unit (4) includes four groups of variable pitch screw rods (7), twelve groups of lead wire units (8), and each group of lead wire units consists of two upper and lower Screw slider (9), pulley (10) and a pair of radial ball bearings (11), the gear transmission unit (5) consists of four working gears (12), four transmission gears (13) and a central gear (14) composition; four groups of lifting screw rods (1) pass through four holes at the four corners of the bracket (2), and the cutting wire (3) is wound on the pulleys (10) of twelve groups of lead wire units (8), and the pitch is variable The screw mandrel (7) is hinged with the bracket (2) and passes through the screw mandrel slider (9), the screw mandrel slider (9) matches the groove on the bracket (2), and the outer ring of the radial ball bearing (11) is connected to the wire screw. The rod slider is fixed, the inner ring of the radial ball bearing (11) is fixed with the cable pulley (10), the working gear (12) is fixed with the variable pitch screw (7), and the transmission gear (13) is matched with the working gear (12) and Connected to the bracket (2), the central gear (14) cooperates with the four transmission gears (13) and connected to the bracket (2), the stepper motor (6) is fixed on the bracket (2) and connected to the central gear (14) , the first motor is connected with the cutting line, and the second motor is connected with four sets of lifting screw rods at the same time. 2. A concrete cutting machine according to claim 1, characterized in that the variable pitch screw (7) is equally divided into six sections, and from the end of the near working gear (12) to the end of the far working gear (12) The pitch ratio of each segment at the end is 1:2:3:4:5:6. 3. A concrete cutting machine according to claim 1, characterized in that the surface of the cutting line (3) has barbs. 4. A concrete cutting machine according to claim 1, characterized in that the cutting line (3) bypasses two sets of lead wire units (8) at the same time and the working area of the cutting line (3) is always parallel and equal in distance. 5. A method for using a concrete cutting machine as claimed in claim 1, comprising the following steps: 1) According to the size of the concrete to be cut, control the stepper motor (6) to drive four sets of variable pitch screw rods (7) to move simultaneously through the gear transmission unit (5) to adjust the cutting width of the concrete; 2) The first motor drives the cutting line (3) to move; 3) The second motor simultaneously drives four sets of lifting screw rods (1) to rotate to lower the concrete cutter to cut concrete; 4) After the cutting is completed, the second motor rotates in reverse to drive the four sets of lifting screw rods (1) to rotate to lift the concrete cutting machine to the original position and complete the cutting.