阅读说明：本技术 一种钢筋表面混凝土清理装置 (Steel bar surface concrete cleaning device ) 是由 张震 李高峰 谢红 于 2020-12-31 设计创作，主要内容包括：本发明涉及一种钢筋表面混凝土清理装置,解决现有技术钢筋螺纹槽内的螺纹槽不好清理,并且刀具容易发热的问题；其解决的技术方案是:包括一个支架,支架的左右两侧有支撑板,支撑板上有夹紧单元,夹紧单元均包含一个转盘,转盘的外侧有固定轴,转盘的内侧有夹紧盘,夹紧盘上有固定装置；两个支撑板之间有横杆,横杆下端面上有刮刀,刮刀之间有敲击块,横杆上有滑块,滑块使得刮刀向下移动,刮刀的刀片可置于钢筋的螺旋槽内并使钢筋位于其位移的最内端,刮刀位于螺旋槽内时,钢筋转动时沿其轴线移动,刮刀脱离钢筋后,钢筋反向移动复位且钢筋的转动半径变大,转动半径变大后的钢筋转动与敲击块发生撞击；本发明构思新颖,结构巧妙,实用性强。(The invention relates to a concrete cleaning device for the surface of a reinforcing steel bar, which solves the problems that the thread groove in the thread groove of the reinforcing steel bar is not well cleaned and a cutter is easy to heat in the prior art; the technical scheme includes that the device comprises a support, support plates are arranged on the left side and the right side of the support, clamping units are arranged on the support plates, each clamping unit comprises a rotary table, a fixed shaft is arranged on the outer side of each rotary table, a clamping disc is arranged on the inner side of each rotary table, and a fixing device is arranged on each clamping disc; a cross rod is arranged between the two supporting plates, scrapers are arranged on the lower end faces of the cross rod, a knocking block is arranged between the scrapers, a sliding block is arranged on the cross rod, the scrapers are enabled to move downwards by the sliding block, blades of the scrapers can be arranged in a spiral groove of the steel bar and enable the steel bar to be located at the innermost end of the displacement of the steel bar, when the scrapers are located in the spiral groove, the steel bar moves along the axis of the steel bar when rotating, after the scrapers are separated from the steel bar, the steel bar moves reversely to reset, the rotating radius of the steel bar; the invention has novel conception, smart structure and strong practicability.)

1. A concrete cleaning device for the surface of a reinforcing steel bar is characterized by comprising a support 1, wherein the left side and the right side of the support 1 are respectively provided with a supporting plate 2 in the front-back direction, each supporting plate 2 is provided with a clamping unit, each clamping unit comprises a rotary table 3 capable of rotating around the axis of the clamping unit in a reciprocating manner, the outer side of the rotary table 3 is fixedly provided with a fixed shaft 4 coaxial with the rotary table 3, the inner side of the rotary table 3 is provided with a clamping disc 5 capable of rotating along the rotary table 3, the clamping disc 5 can move left and right along the axis of the rotary table 3 and can move along the radial direction of the rotary table 3, each clamping disc 5 is provided with a fixing device for fixing the reinforcing steel bar 30, and the reinforcing steel bar 30 is arranged between;

a transverse rod 6 which is arranged on the left and right above the support 1 is arranged between the two supporting plates 2, a plurality of scrapers 7 which can move up and down are evenly distributed on the left and right of the lower end surface of the transverse rod 6, a knocking block 8 which is arranged in the front and back direction is arranged on the transverse rod 6 between the two adjacent scrapers 7, a sliding block 9 which can move left and right along the transverse rod 6 is arranged on the transverse rod 6, the turntable 3 can rotate back and forth to drive the sliding block 9 to move left and right, the sliding block 9 moves to be sequentially contacted with the scrapers 7 at different positions and enables the corresponding scrapers 7 to move downwards, after the scrapers 7 move downwards, the blade of the scraper 7 can be arranged in the spiral groove of the steel bar 30 and presses the steel bar 30 to enable the steel bar 30 to be positioned at the innermost end of the displacement, when the scrapers 7 are positioned in the spiral groove, the steel bar 30 moves along the axis when the steel bar 30 rotates, after the scrapers 7, the clamping disc 5 moves outwards to enable the rotating radius of the reinforcing steel bar 30 to be increased, and the reinforcing steel bar 30 with the increased rotating radius can collide with the knocking block 8 when continuing to rotate.

2. A reinforced concrete surface cleaning device according to claim 1, characterized in that the turntable 3 is connected with the support plate 2 through a bearing, and the servo motor is connected with the fixed shaft 4 through a reducer.

3. A reinforced bar surface concrete cleaning device according to claim 1, characterized in that the inner end surface of the turntable 3 is provided with a first guide groove 10 along the radial direction of the turntable 3, a guide block 11 capable of moving along the first guide groove 10 is arranged in the first guide groove 10, and the guide block 11 is connected with the first guide groove 10 through a T-shaped groove-T-shaped block; a first pressure spring 12 is arranged between the guide block 11 and the outer end face of the first guide groove 10, the outer end of the first pressure spring 12 is fixed on the first guide groove 10, the inner end of the first pressure spring 12 is fixed on the guide block 11, the guide block 11 is provided with a horizontal positioning hole 13, when the guide block 11 is positioned at the innermost end of the displacement, the positioning hole 13 is coaxial with the rotary table 3, the clamping disc 5 is provided with a positioning shaft 14 arranged in the positioning hole 13, the positioning shaft 14 can move left and right along the positioning hole 13, the vertical sections of the positioning shaft 14 and the positioning hole 13 are both polygonal, a second pressure spring 15 is installed on a positioning shaft 14 between the clamping disc 5 and the guide block 11, one end of the second pressure spring 15 is fixed on the clamping disc 5, the other end of the second pressure spring 15 is fixed on the guide block 11, the clamping disc 5 is an eccentric disc, and the direction of the clamping disc 5 is the outer side in the same direction as the first guide groove 10.

4. The device for cleaning concrete on the surface of a reinforcing steel bar according to claim 1, wherein the cross bar 6 is provided with a second horizontal guide groove 16 which penetrates up and down, the slide block 9 is positioned in the second guide groove 16 and can move left and right along the second guide groove 16, the slide block 9 is connected with the second guide groove 16 through a T-shaped groove-T-shaped block, the fixed shaft 4 at the outer side of each support plate 2 is provided with a winding wheel 17, each support plate 2 is provided with a fixed pulley 18 positioned above the winding wheel 17, each winding wheel 17 is wound with a rope 19, one end of the rope 19 is fixed on the winding wheel 17, the other end of the rope 19 is fixed on the slide block 9 after being reversed by the fixed pulley 18, and the winding directions of the rope 19 on the left winding wheel and the right winding wheel are opposite.

5. The reinforced bar surface concrete cleaning device according to claim 1, wherein a plurality of vertical sleeves 20 corresponding to the scrapers 7 one by one are mounted on the lower end surface of the cross bar 6, a vertical cutter bar is mounted above the scrapers 7, the cutter bar of the scrapers 7 is positioned in the sleeves 20 and can move up and down along the sleeves 20, the upper end of the cutter bar of the scrapers 7 penetrates through the sleeves 20 and is positioned above the sleeves 20, a second tension spring 21 is mounted on the cutter bar below the sleeves 20, the upper end of the second tension spring 21 is fixed on the sleeves 20, the lower end of the second tension spring 21 is fixed on the scrapers 7, a trapezoidal block 22 positioned in the second guide groove 16 is mounted on the lower end surface of the sliding block 9, the size of the upper end of the trapezoidal block 22 is larger than that of the lower end of the trapezoidal block 22, the left and right sides of the trapezoidal block 22 are inclined surfaces, the lower end of the trapezoidal block 22 is positioned above the sleeves 20, and the upper end of, and when the scraper 7 is positioned at the uppermost end of the displacement, the upper end of the cutter bar of the scraper 7 is positioned between the bottom surface and the top surface of the trapezoidal block, and when the trapezoidal block 22 moves, the upper end of the cutter bar can be contacted with the top end of the cutter bar and can push the cutter bar to move downwards.

6. A reinforced bar surface concrete cleaning device according to claim 1, wherein each rotating shaft is provided with an outer friction wheel 23, the winding wheel 17 is provided with an inner friction wheel 24 matched with the outer friction wheel 23, and the matching use of the outer friction wheel 23 and the inner friction wheel 24 can prevent the winding wheel 17 on the tightening side from being pulled off due to the fact that the tension of the rope 19 on the tightening side is increased due to the continuous rotation when the slide block 9 is clamped by the cutter bar of the scraper 7.

7. The device for cleaning concrete on the surface of a steel bar according to claim 1, wherein the fixing device comprises a blind hole 25 which is formed in the clamping disc 5 and coaxial with the fixing shaft 4, a plurality of positioning grooves 26 which are formed in the radial direction of the blind hole 25 are evenly distributed on the side wall of the blind hole 25 in the circumferential direction, a positioning rod 27 which is coaxial with the positioning grooves 26 and can move along the axis of the positioning grooves 26 is installed in each positioning groove 26, a third pressure spring 28 is installed between the positioning rod 27 and the bottom surface of the positioning rod 26, one end of the third pressure spring 28 is fixed to the bottom of the positioning groove 26, the other end of the third pressure spring 28 is fixed to the positioning rod 27, the inner end of the positioning rod 27 is located in the blind hole 25 and is provided with an arc-shaped friction block 29 which is coaxial with the blind hole 255, and a plurality.

8. A reinforced bar surface concrete cleaning device according to claim 1, wherein the lower end of the scraper 7 is positioned above the strike block 8 when the scraper 7 is positioned at the uppermost position, so that the scraper 7 does not interfere with the rotation of the reinforcing bar 30 when the rotation radius of the reinforcing bar is increased, and the lower end of the strike block 8 is positioned between the minimum and maximum rotation radii of the reinforcing bar 30.

Technical Field

The invention relates to the field of construction machinery, in particular to a device for cleaning concrete on the surface of a steel bar.

Background

In the in-process of the concrete that is stained with on clearance twisted steel surface, the traditional method of using the emery wheel to polish the twisted steel surface, the impurity in the thread groove is not easily clear away, secondly, when using the steel brush to clear up the thread groove, the concrete is stained with easily and attaches on the steel brush, make the subsequent clearance effect of steel brush not good, in-process at the clearance, the clearance instrument is with reinforcing bar frictional contact all the time, long-time clearance can make the clearance instrument generate heat, influence the use of clearance instrument, it sprays to use water usually in order to prevent that the cutter from generating heat among the prior art, this kind of method makes the reinforcing bar be in the follow-up rust of humid state easily, and simultaneously, after the concrete meets water, bond easily on cutter or reinforcing bar, make the concrete on the reinforcing bar more difficult to handle.

Disclosure of Invention

In view of the above situation, in order to solve the problems existing in the prior art, the present invention aims to provide a device for cleaning concrete on the surface of a steel bar, which solves the problems that the thread groove in the thread groove of the steel bar in the prior art is not well cleaned and the cutter is easy to heat.

The technical scheme for solving the problem is as follows: the steel bar clamping device comprises a support, wherein the left side and the right side of the support are respectively provided with a supporting plate in the front-back direction, each supporting plate is provided with a clamping unit, each clamping unit comprises a rotary table capable of rotating around the axis of the clamping unit in a reciprocating manner, a fixing shaft coaxial with the rotary table is fixed on the outer side of the rotary table, a clamping disc capable of rotating along with the rotary table is installed on the inner side of the rotary table, the clamping disc can move left and right along the axis of the rotary table and can move along the radial direction of the rotary table, each clamping disc is provided with a fixing device for fixing steel bars, and the steel bars are installed;

a transverse rod which is positioned above the bracket and is placed left and right is arranged between the two supporting plates, a plurality of scrapers which can move up and down are evenly distributed on the lower end surface of the transverse rod left and right, a knocking block which is placed in the front and back direction is arranged on the transverse rod between the two adjacent scrapers, a sliding block which can move left and right along the transverse rod is arranged on the transverse rod, the sliding block can be driven to move left and right by the reciprocating rotation of the rotary disk, the sliding block can move left and right to be sequentially contacted with the scrapers at different positions, and the corresponding scrapers can move downwards, after the scrapers move downwards, blades of the scrapers can be arranged in a spiral groove of the reinforcing steel bar and press the reinforcing steel bar to enable the reinforcing steel bar to be positioned at the innermost end of the displacement, when the scrapers are positioned in the spiral groove, the reinforcing steel bar can move along the, the steel bar with the increased rotating radius can impact the knocking block when continuously rotating.

The concrete cleaning device is novel in concept, ingenious in structure and high in practicability, can clean concrete in the spiral groove on the outer surface of the steel bar, and the plurality of scrapers work intermittently in the cleaning process to prevent heating.

Drawings

Fig. 1 is a front view of the present invention in use.

Fig. 2 is a front sectional view of the present invention in use.

Fig. 3 is a partial enlarged view of the invention at a in fig. 1.

FIG. 4 is a right sectional view of the reel and the fixed shaft of the present invention.

FIG. 5 is a left side sectional view of the reinforcing bar in connection with the clamping disk of the present invention.

Fig. 6 is a partial enlarged view of the invention at D in fig. 5.

FIG. 7 is a left side sectional view of B-B of FIG. 1 in accordance with the present invention.

FIG. 8 is a right side sectional view of C-C of FIG. 1 in accordance with the present invention.

Fig. 9 is a left side sectional view of the slide pressing blade of the present invention after moving downward.

FIG. 10 is a left side cross-sectional view of the slider of the present invention shown without contact with a doctor blade. .

FIG. 11 is a left side sectional view of the connection of the guide block and the guide groove on the turntable according to the present invention.

Detailed Description

The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1 to 11, the present invention includes a bracket 1, a support plate 2 in a front-back direction is respectively disposed on the left and right sides of the bracket 1, a clamping unit is mounted on each support plate 2, each clamping unit includes a rotary table 3 capable of reciprocating rotation around its own axis, a fixed shaft 4 coaxial with the rotary table 3 is fixed on the outer side of the rotary table 3, a clamping disc 5 capable of rotating along with the rotary table 3 is mounted on the inner side of the rotary table 3, the clamping disc 5 can move left and right along the axis of the rotary table 3 and can move along the radial direction of the rotary table 3, a fixing device for fixing a reinforcing steel bar 30 is mounted on each clamping disc 5, and the reinforcing steel bar 30 is mounted between the left and right fixing devices;

a transverse rod 6 which is arranged on the left and right above the support 1 is arranged between the two supporting plates 2, a plurality of scrapers 7 which can move up and down are evenly distributed on the left and right of the lower end surface of the transverse rod 6, a knocking block 8 which is arranged in the front and back direction is arranged on the transverse rod 6 between the two adjacent scrapers 7, a sliding block 9 which can move left and right along the transverse rod 6 is arranged on the transverse rod 6, the turntable 3 can rotate back and forth to drive the sliding block 9 to move left and right, the sliding block 9 moves to be sequentially contacted with the scrapers 7 at different positions and enables the corresponding scrapers 7 to move downwards, after the scrapers 7 move downwards, the blade of the scraper 7 can be arranged in the spiral groove of the steel bar 30 and presses the steel bar 30 to enable the steel bar 30 to be positioned at the innermost end of the displacement, when the scrapers 7 are positioned in the spiral groove, the steel bar 30 moves along the axis when the steel bar 30 rotates, after the scrapers 7, the clamping disc 5 moves outwards to enable the rotating radius of the reinforcing steel bar 30 to be increased, and the reinforcing steel bar 30 with the increased rotating radius can collide with the knocking block 8 when continuing to rotate.

In order to realize that the rotary disc 3 can rotate around the axis of the rotary disc 3 in a reciprocating way, the rotary disc 3 is connected with the supporting plate 2 through a bearing, and the servo motor is connected with the fixed shaft 4 through a speed reducer; and starting a servo motor, wherein the servo motor can drive the turntable 3 to rotate in a reciprocating manner.

A first guide groove 10 along the radial direction of the rotary table 3 is formed in the inner end face of the rotary table 3, a guide block 11 capable of moving along the first guide groove 10 is installed in the first guide groove 10, and the guide block 11 is connected with the first guide groove 10 through a T-shaped groove-T-shaped block; a first pressure spring 12 is arranged between the guide block 11 and the outer end face of the first guide groove 10, the outer end of the first pressure spring 12 is fixed on the first guide groove 10, the inner end of the first pressure spring 12 is fixed on the guide block 11, after the guide block 12 moves outwards, the guide block 12 compresses the first pressure spring 12, and the first pressure spring 12 can provide an inward thrust for the guide block 11 to enable the guide block to reset towards the inside of the first guide groove 10;

a horizontal positioning hole 13 is formed in the guide block 11, when the guide block 11 is located at the innermost end of the displacement, the positioning hole 13 is coaxial with the rotary table 3, a positioning shaft 14 arranged in the positioning hole 13 is installed on the clamping disc 5, the positioning shaft 14 can move left and right along the positioning hole 13, the vertical sections of the positioning shaft 14 and the positioning hole 13 are both polygonal, and the rotary table 3 can drive the clamping disc 5 to rotate through the guide block 11, the positioning shaft 14 and the positioning hole 13;

a second pressure spring 15 is arranged on a positioning shaft 14 between the clamping disc 5 and the guide block 11, one end of the second pressure spring 15 is fixed on the clamping disc 5, the other end of the second pressure spring 15 is fixed on the guide block 11, and after the clamping disc 5 moves axially, one of the second pressure springs 15 matched with the clamping disc 5 can reset the clamping disc 5;

the clamping disc 5 is an eccentric disc, the direction of the clamping disc 5 is the outer side in the same direction as the first guide groove 10, and when the rotary disc 3 drives the clamping disc 5 to rotate, the clamping disc 5 can move outwards in the first guide groove 10 along the eccentric direction of the clamping disc;

after the scraper 7 moves downwards, the blade of the scraper 7 can be placed in the spiral groove of the steel bar 30 and presses the steel bar 30 to enable the steel bar 30 to be located at the innermost end of the displacement, the positioning hole 13 is coaxial with the rotary table 3, at the moment, the steel bar 30 cannot move along with the clamping disc 5 along the radial direction of the rotary table 3, but the rotary table 3 can drive the clamping disc 5 and the steel bar to rotate together through the guide block 11, the positioning shaft 14 and the positioning hole 13, and at the moment, the scraper 7 is fixed, the steel bar 30 rotates, so that the scraper 7 and the steel bar 30 form a structure similar to a screw nut, and the rotation of the steel bar 30 can drive the clamping disc 5 to move along the axis of the steel bar under the; the second compression spring 15 on one side is stretched, the second compression spring 15 on the other side is compressed, and after the scraper 7 moves upwards to separate from the steel bar 30, the steel bar 30 moves reversely left and right under the second compression spring 15 to reset; after the scraper breaks away from the reinforcing bar, carousel 3 can be through guide block 11 and location axle 14, locating hole 13 drives and presss from both sides tight dish 5 and rotates, the reinforcing bar rotates along with pressing from both sides tight dish jointly, because press from both sides tight dish 5 and set up to the eccentric disc, so, carousel 3 drives and presss from both sides tight dish 5 pivoted in-process, under the effect of centrifugal force, press from both sides tight dish 5 and outwards remove along first guide way 10 promptly, first pressure spring 12 is compressed, after carousel 3 stall, under the effect of first pressure spring 12 pressure, press from both sides tight dish 5 and inwards remove and reset.

In order to realize that the rotary table 3 drives the sliding block 9 to move left and right when rotating in a reciprocating manner, a horizontal second guide groove 16 which is penetrated up and down is formed in the cross rod 6, the sliding block 9 is positioned in the second guide groove 16 and can move left and right along the second guide groove 16, the sliding block 9 is connected with the second guide groove 16 through a T-shaped groove-T-shaped block, a winding wheel 17 is arranged on the fixed shaft 4 at the outer side of each supporting plate 2, a fixed pulley 18 which is positioned above the winding wheel 17 is arranged on each supporting plate 2, a rope 19 is wound on each winding wheel 17, one end of each rope 19 is fixed on each winding wheel 17, the other end of each rope 19 is fixed on the sliding block 9 after being reversed through the fixed pulley 18, and the winding directions of the rope 19 on the left winding wheel and the right winding; when the turntable 3 drives the winding wheel 17 to rotate in the forward direction, the rope 19 is wound by the winding wheel positioned on the right side, the rope 19 is unwound by the winding wheel positioned on the left side, and the sliding block 9 moves rightwards under the left and right tension of the rope 19 on the right side; when the turntable 3 drives the winding wheel 17 to rotate reversely, the winding wheel 17 on the left side winds the rope 19, and the slider 9 moves leftwards under the action of the pulling force of the rope 19 on the left side.

A plurality of vertical sleeves 20 which are in one-to-one correspondence with the scrapers 7 are mounted on the lower end face of the cross rod 6, a vertical cutter bar is mounted above the scrapers 7, the cutter bar of the scrapers 7 is positioned in the sleeves 20 and can move up and down along the sleeves 20, the upper ends of the cutter bars of the scrapers 7 penetrate through the sleeves 20 and are positioned above the sleeves 20, a second tension spring 21 is mounted on the cutter bar below the sleeves 20, the upper end of the second tension spring 21 is fixed on the sleeves 20, and the lower end of the second tension spring 21 is fixed on the scrapers 7; the second tension spring 21 can realize that when the scraper 7 is subjected to downward force, the scraper 7 moves downwards, the second tension spring 21 is tensioned and deformed, and when the downward force of the scraper 7 disappears, the scraper 7 can be reset upwards under the action of the tension of the second tension spring 21;

a trapezoidal block 22 positioned in the second guide groove 16 is installed on the lower end surface of the sliding block 9, the size of the upper end of the trapezoidal block 22 is larger than that of the trapezoidal block 22 at the lower end, the left and right surfaces of the trapezoidal block 22 are inclined planes, the lower end of the trapezoidal block 22 is positioned above the sleeve 20, the upper end of the cutter bar of the scraper 7 is positioned in the second guide groove 16, when the scraper 7 is positioned at the uppermost displacement end of the scraper, the upper end of the cutter bar of the scraper 7 is positioned between the bottom surface and the top surface of the trapezoidal block, and when the trapezoidal block 22 moves, the cutter bar can be contacted with the top end of the cutter bar and can be pushed to move; when the slide block 9 drives the trapezoid block 22 to move rightwards, because the upper end of the cutter bar of the scraper 7 is positioned between the bottom surface and the top surface of the trapezoid block, the inclined surface on the right side of the trapezoid block 22 is firstly contacted with the cutter bar of one of the scraper 7, and when the slide block 9 moves rightwards under the action of the inclined surface, the trapezoid block 22 pushes the scraper 7 to move downwards, the second tension spring 21 is stretched, and after the slide block 9 is separated from the cutter bar of the scraper 7, the scraper 7 moves upwards to reset under the action of the tension of the second tension spring 21.

In order to realize that the blade of the scraper 7 can smoothly enter the spiral groove of the steel bar 30 after the scraper 7 moves downwards, an outer friction wheel 23 is installed on each rotating shaft, an inner friction wheel 24 matched with the outer friction wheel 23 is installed on the winding wheel 17, and the matching use of the outer friction wheel 23 and the inner friction wheel 24 can prevent the situation that the rope 19 is broken due to the fact that the tension of the rope 19 on the tightening side is increased because the winding wheel 17 on the tightening side continuously rotates when the sliding block 9 is clamped by the cutter rod of the scraper 7; when the sliding block 9 contacts with the upper end of the cutter bar of the scraper 7, if the angle of the steel bar 30 enables the scraper 7 to enter the spiral groove of the steel bar 30, at this time, the sliding block 9 moves under the tension of the rope 19 on the tightened side, and presses the scraper 7 to move downwards into the spiral groove; when the sliding block 9 contacts with the upper end of the cutter bar of the scraper 7, if the angle of the steel bar 30 cannot enable the scraper 7 to enter the spiral groove of the steel bar 30, at this time, because the scraper 7 cannot move downwards to the lowest end of the displacement, at this time, the upper end of the cutter bar of the scraper 7 blocks the sliding block 9, the sliding block 9 cannot move to the side where the rope 19 is tightened, at this time, the tension of the side where the rope 19 is tightened continues to increase, that is, the resistance force on the winding wheel 17 increases, a slip phenomenon occurs between the inner friction wheel 24 and the outer friction wheel 23, at this time, the rotating shaft drives the steel bar 30 and the winding wheel 17 on the telescopic extension side to rotate, when the steel bar 30 rotates to the angle to enable the scraper 7 to enter the spiral groove of the steel bar 30, under the effect of the pressure of the sliding block 9, the scraper 7 moves downwards to the spiral groove, and at the same time, the resistance of the winding wheel 17 on the tightening side of the rope 19 is reduced, the inner friction wheel 24 and the outer friction wheel 23 are matched to drive the winding wheel 17 on the tightening side of the rope 19 to rotate, and meanwhile, the sliding block 9 is driven by the rope 19 to move continuously.

In order to realize that the fixing device can fix the position of the steel bar 30, the fixing device comprises a blind hole 25 which is formed in the clamping disc 5 and is coaxial with the fixing shaft 4, a plurality of positioning grooves 26 which are radial along the blind hole 25 are evenly distributed on the side wall of the blind hole 25 in the circumferential direction, a positioning rod 27 which is coaxial with the positioning grooves 26 and can move along the axis of the positioning grooves 26 is installed in each positioning groove 26, a third pressure spring 28 is installed between each positioning rod 27 and the bottom surface of each positioning groove 26, one end of each third pressure spring 28 is fixed at the bottom of each positioning groove 26, the other end of each third pressure spring 28 is fixed on each positioning rod 27, the inner end of each positioning rod 27 is located in each blind hole 25 and is provided with an arc-shaped friction block 29 which is coaxial with the blind; when the reinforcing steel bar 30 is installed, the two ends of the reinforcing steel bar 30 are clamped in the blind holes 25 on the left side and the right side, firstly, the reinforcing steel bar 30 extrudes the arc-shaped friction block 29 and enables the third pressure spring 28 to be compressed, under the action of the pressure of the third pressure spring 28, the arc-shaped friction block 29 is in close contact with the outer surface of the reinforcing steel bar 30, and the reinforcing steel bar 30 is fixed on the clamping disc 5 through the arc-shaped friction block 29.

In order to realize after the scraper 7 breaks away from the helicla flute of reinforcing bar 30, reinforcing bar 30 pivoted in-process can with strike and take place the striking between the piece 8, scraper 7 be located when the top the position of scraper 7 lower extreme is located and strike piece 8 top to this realization is after the turning radius grow of reinforcing bar 30, scraper 7 does not interfere the rotation of reinforcing bar, strike the lower extreme of piece 8 and be located between the minimum radius of gyration and the maximum radius of gyration of reinforcing bar 30, promptly: the lower end of the knocking block 8 is positioned above the steel bar 30 at the innermost end of the displacement, and the lower end of the knocking block 8 is positioned on the inner side of the maximum turning radius of the steel bar 30; after 7 break away from reinforcing bar 30, reinforcing bar 30 can be at the pivoted in-process, can radially outwards remove simultaneously, and reinforcing bar 30 radially outwards removes the back, and the turning radius grow of reinforcing bar 30, the turning radius of reinforcing bar 30 is greater than and beats 8 bottoms of piece and the distance between the pivot center, at reinforcing bar 30 pivoted in-process, can with strike the lower extreme contact of piece 8 and take place the striking.

Before the device is used, the slide block 9 is positioned at the rightmost end of the displacement, all the scrapers 7 are positioned at the uppermost end of the displacement, the second tension spring 21 is positioned at the original length, the clamping disc 5 is positioned at the innermost end of the displacement, the first compression spring 12 is positioned at the original length, the left and right second compression springs 15 are positioned at the original length, and the third compression spring 28 on the clamping disc 5 is positioned at the original length;

when the device is used, two ends of a steel bar 30 are clamped in the blind holes 25 on the left side and the right side, firstly, the steel bar 30 extrudes the arc-shaped friction block 29 and enables the third pressure spring 28 to be compressed, under the action of the pressure of the third pressure spring 28, the arc-shaped friction block 29 is tightly contacted with the outer surface of the steel bar 30, and the steel bar 30 is fixed on the clamping disc 5 through the arc-shaped friction block 29;

then starting a motor, wherein the motor rotates forwards, the motor drives a fixed shaft 4 to rotate through a speed reducer, the fixed shaft 4 rotates to drive a rotary disc 3 and a clamping disc 5 to rotate together, meanwhile, the fixed shaft 4 drives winding wheels 17 on the left side and the right side to rotate together, a rope 19 is wound by the winding wheel on the right side, the rope 19 is unwound by the winding wheel on the left side, the slide block 9 moves rightwards under the tension of the rope 19 on the right side, when the slide block 9 moves rightwards, the inclined surface on the right side of the trapezoidal block 22 is in contact with the cutter bar of the scraper 7 on the leftmost side, the scraper 7 is pressed to move downwards;

if the angle of the steel bar 30 enables the scraper 7 to enter the spiral groove of the steel bar 30, at this time, the sliding block 9 moves under the tension of the rope 19 on the tightened side, and presses the scraper 7 to move downwards into the spiral groove; if the angle of the steel bar 30 cannot enable the scraper 7 to enter the spiral groove of the steel bar 30, at this time, the scraper 7 cannot move downwards to the lowest end of the displacement, at this time, the slider 9 cannot move to the side where the rope 19 is tightened due to the blocking of the upper end of the cutter bar of the scraper 7, at this time, the tension of the tightened side of the rope 19 continues to increase, that is, the resistance of the winding wheel 17 increases, a slip phenomenon occurs between the inner friction wheel 24 and the outer friction wheel 23, at this time, the rotating shaft drives the steel bar 30 and the winding wheel 17 at the telescopic and extensible side to rotate, when the steel bar 30 rotates to the angle, so that the scraper 7 can enter the spiral groove of the steel bar 30, under the pressure of the slider 9, the scraper 7 moves downwards into the spiral groove, simultaneously, the tension of the rope 19 at the tightened side of the rope 19 decreases, the resistance of the winding wheel 17 at the tightened side of the rope 19 decreases, and the inner friction wheel 24 and the outer friction wheel 23, meanwhile, the sliding block 9 is driven by the rope 19 to move continuously;

the slide block 9 moves rightwards, so that the scraper 7 at the leftmost side moves downwards into a spiral groove of the steel bar 30, after the scraper 7 moves downwards, the blade of the scraper 7 can be placed in the spiral groove of the steel bar 30 and presses the steel bar 30 to enable the steel bar 30 to be located at the innermost end of the displacement, at the moment, the positioning hole 13 is coaxial with the rotary table 3, at the moment, the steel bar 30 cannot move along the radial direction of the rotary table along with the clamping disc 5, but the steel bar 30 can rotate along with the rotary table together, at the moment, the scraper 7 does not move, the steel bar 30 rotates, so the scraper 7 and the steel bar 30 form a structure similar to a screw nut, and the rotation of the steel bar 30 can drive the clamping disc 5 to move right; meanwhile, the scraper 7 scrapes off concrete in the spiral groove of the reinforcing steel bar 30, and in the process that the reinforcing steel bar 30 moves rightwards, the second pressure spring 15 on the left side is stretched, and the second pressure spring 15 on the right side is compressed;

the slide block 9 continues to move rightwards, after the slide block 9 is separated from the cutter bar of the scraper 7 at the leftmost side, under the action of the tension of the second tension spring 21, the scraper 7 at the leftmost side moves upwards to reset under the action of the second tension spring 21, after the scraper 7 at the left side is separated from the steel bar 30, under the action of the second pressure spring 15, the steel bar 30 moves leftwards to reset, and in the process that the steel bar 30 resets leftwards, due to the action of the second pressure spring 15, the steel bar 30 is axially impacted, so that concrete adhered to the outer surface of the steel bar 30 falls off; meanwhile, after the scraper 7 is separated from the steel bar 30, the clamping disc 5 is an eccentric disc, so that the clamping disc 5 can move outwards in the first guide groove 10 along the eccentric direction of the clamping disc 5 when the rotary disc 3 drives the clamping disc 5 to rotate under the action of centrifugal force; the first pressure spring 12 is compressed, the clamping disc 5 moves outwards to enable the rotating radius of the steel bar 30 to be increased, the rotating radius of the steel bar 30 is larger than the distance between the tail end of the knocking block 8 and the center of the rotating shaft, and the steel bar 30 can be contacted with the lower end of the knocking block 8 and impacted in the rotating process, so that the knocking block 8 radially impacts the steel bar 30, and concrete adhered to the outer surface of the steel bar 30 falls off;

the fixed shaft 4 continuously drives the winding wheel 17 to rotate, the sliding block 9 is driven by the rope 19 to continuously move rightwards, the sliding block 9 sequentially contacts with the cutter bar of the scraper 7 in the process of moving rightwards, the cutter bar of the scraper 7 is pushed to move downwards, the second tension spring 21 is pulled to deform, the scraper 7 enters the spiral groove of the steel bar 30, the steel bar 30 rotates under the action of the spiral groove and the scraper 7, the steel bar 30 moves rightwards, the second pressure spring 15 deforms, the concrete in the spiral groove of the steel bar 30 of the scraper 7 is cleaned, after the sliding block 9 is separated from the scraper 7, the scraper 7 moves upwards to be reset and separated from the steel bar 30 under the action of the tension of the second tension spring 21, the steel bar 30 resets leftwards and impacts the axial direction of the steel bar 30 under the action of the second pressure spring 15, meanwhile, when the scraper 7 is separated from the steel bar 30, the rotating radius of the steel, knocking the radial direction of the reinforcing steel bars 30 to enable the concrete to fall off;

when the slide block 9 moves rightmost to the displacement right, the motor rotates reversely, the winding wheel 17 on the left side is in a winding state, the winding wheel 17 on the right side is in a paying-off state, the slide block 9 moves leftwards under the action of the tension of the rope 19, the trapezoidal blocks 22 at the lower end of the slide block 9 are sequentially contacted with the cutter bars of the scrapers 7 and push the cutter bars of the scrapers 7 to move downwards, the second tension spring 21 is tensioned and deformed, the scrapers 7 enter the spiral grooves of the steel bars 30, the steel bars 30 rotate under the action of the spiral grooves and the scrapers 7, the steel bars 30 move leftwards, the second compression spring 15 is deformed, the scrapers 7 clean concrete in the spiral grooves of the steel bars 30, after the slide block 9 is separated from the scrapers 7, the scrapers 7 move upwards to be reset to be separated from the steel bars 30 under the action of the tension of the second tension spring 21, the steel bars 30 reset rightwards and impact, the turning radius of reinforcing bar 30 grow, and the rotatory in-process of reinforcing bar 30 collides with knocking piece 8, strikes reinforcing bar 30 radially for the concrete drops.

And after cleaning is finished, taking out the reinforcing steel bars 30.

It is worth noting that: the reinforcing steel bars 30 are arranged behind the two clamping discs 5, the positions of the scrapers 7 can be conveniently adjusted, so that the scrapers 7 can enter spiral grooves with different sizes, the sleeve 20 is connected with the cross rod 6 in a sliding mode, and after the position of the sleeve 20 is adjusted, the sleeve 20 is fixed on the cross rod 6 through fastening screws.

According to the invention, the scrapers 7 at different positions are sequentially pressed to move downwards in the process of reciprocating the slide block 9 leftwards and rightwards by arranging the plurality of scrapers 7, the winding wheel 17, the slide block 9 and the trapezoidal block 22, so that the scrapers 7 scrape the concrete adhered in the spiral groove of the reinforcing steel bar 30 without manual treatment, and the plurality of scrapers 7 intermittently work, so that the heating condition of one scraper 7 during working can be effectively prevented.

According to the invention, the scraper 7 is arranged, the clamping disc 5 moves left and right, so that concrete in the spiral groove of the steel bar 30 can be cleaned according to the unique characteristics of the steel bar 30, the scraper 7 is positioned in the spiral groove and matched with the spiral groove, so that the steel bar 30 moves in the horizontal direction, the scraper 7 cleans the concrete in the spiral groove, and after the scraper 7 is separated from the steel bar 30, the clamping disc 5 drives the axis of the steel bar 30 to move and reset, so that the axial knocking of the steel bar 30 is realized, and the concrete is enabled to fall off.

According to the invention, by arranging the eccentric clamping disc 5 and the knocking block 8, after the scraper 7 is separated from the reinforcing steel bar 30, the rotating radius of the reinforcing steel bar 30 is increased, so that the reinforcing steel bar 30 can be impacted with the knocking block 8 in the rotating process, the radial direction of the reinforcing steel bar 30 is knocked, the concrete can be loosened, and finally the concrete is separated from the reinforcing steel bar 30 more easily.

The concrete cleaning machine has the advantages of novel concept, ingenious structure and strong practicability, can clean concrete in the spiral groove on the outer surface of the steel bar 30, prevents heating due to the fact that the plurality of scrapers 7 work intermittently in the cleaning process, and can continuously impact the steel bar 30 at multiple angles in the cleaning process, so that the cleaning effect is better.