CN108789098B

CN108789098B - Sander for pier reinforcing steel bar

Info

Publication number: CN108789098B
Application number: CN201810726389.6A
Authority: CN
Inventors: 王子健; 武黎明; 胡锦鹏; 张佳宁; 阳波
Original assignee: Chongqing University of Science and Technology
Current assignee: Chongqing University of Science and Technology
Priority date: 2018-07-04
Filing date: 2018-07-04
Publication date: 2021-03-02
Anticipated expiration: 2038-07-04
Also published as: CN108789098A

Abstract

The invention discloses a sander for a pier steel bar, which comprises a shell, a sanding wheel group arranged in the shell and a driving assembly for driving the sanding wheel group to rotate; the casing comprises an annular casing of an annular structure and a handle casing of a rod-shaped structure, wherein the annular casing is used for installing a grinding wheel set, the handle casing is communicated with the annular casing and is fixed along the radial direction, the annular casing comprises a left semi-annular casing and a right semi-annular casing, the handle casing is fixedly connected with one end of the left semi-annular casing, which is fixedly connected with the handle casing, is hinged with one end of the right semi-annular casing, the other end of the left semi-annular casing and the other end of the right semi-annular casing rotate through the right semi-annular casing to open or close the annular casing, and a lock catch used for locking the annular casing is arranged between the other end of the left; the grinding wheel set comprises a plurality of grinding wheels which are rotatably installed on the annular shell, the plurality of grinding wheels are distributed along the circumferential direction of the annular shell, and the outer circles of the plurality of annular wheels surround the middle of the annular shell to form an annular grinding surface.

Description

Sander for pier reinforcing steel bar

Technical Field

The invention relates to the field of bridges, in particular to a sander for pier steel bars.

Background

The bridge pier is mainly divided into three types of reinforced concrete thin-wall piers, double-wall piers and V-shaped piers. The double-wall pier has the common characteristics that the length in the transverse bridge direction is basically the same as that of piers in other forms, but the length in the longitudinal bridge direction is very small, so that the double-wall pier has the advantages that the material can be saved, the dead weight of the pier can be reduced, meanwhile, the rigidity of the pier can be increased, the hogging moment of a main beam fulcrum can be reduced, and the attractiveness of the bridge can be improved; the V-shaped piers can indirectly reduce the span of the main beam, so that the bending moment in the span is reduced, and the V-shaped piers have the characteristics of an arch bridge and are more suitable for building a large-span bridge; in order to ensure the rigidity of the pier, generally, reinforcing steel bars are arranged in the pier, and the reinforcing steel bars are easy to corrode in the process of pouring the pier in sections, the reinforcing steel bars need to be manually polished, so that the quality of the reinforcing steel bars and the connection strength of the reinforcing steel bars and the pier are ensured; in the prior art, the derusting of pier reinforcing steel bars generally adopts manual work to polish through metal wires, so that the working efficiency is low, and the construction period is long.

Therefore, in order to solve the above problems, a need exists for a sander for reinforcing steel bars of a pier, which can quickly polish and remove rust on the reinforcing steel bars of the pier, has high working efficiency, shortens the construction period, and has a simple and light structure and convenient operation.

Disclosure of Invention

In view of the above, the present invention aims to overcome the defects in the prior art, and provides a grinder for pier rebars, which can quickly grind and remove rust on pier rebars, has high working efficiency, shortens construction period, and has the advantages of simple and light structure, simple operation and convenient use.

The invention discloses a sander for a pier steel bar, which comprises a shell, a grinding wheel group arranged in the shell and a driving assembly used for driving the grinding wheel group to rotate; the shell comprises an annular shell of an annular structure and used for mounting a grinding wheel set, and a handle shell of a rod-shaped structure, wherein the handle shell is communicated with the annular shell and is fixed in the radial direction; the grinding wheel set comprises a plurality of grinding wheels which are rotatably installed on the annular shell, the plurality of grinding wheels are distributed along the circumferential direction of the annular shell, and the outer circles of the plurality of annular wheels surround the middle of the annular shell to form an annular grinding surface.

Further, the driving assembly comprises a driving motor and a transmission assembly in transmission connection between the grinding wheel and the driving motor; the transmission assembly comprises a driving belt wheel rotatably arranged in the handle shell, a transmission belt in transmission connection between the driving belt wheel and the grinding wheel, and a plurality of guide shafts rotatably arranged in the shell and used for guiding the transmission belt; the utility model discloses a grinding wheel, including drive pulley, driving motor, guiding axle, driving pulley and driving motor's pivot drive cooperation, the guiding axle includes along radial outer guiding axle and the interior guiding axle of arranging by outer to interior, outer guiding axle and interior guiding axle are a plurality of and distribute along circumference respectively, the drive belt is around drive pulley and each grinding wheel and form shape under the effect of guiding axle and set up in the casing and be annular "Y" column structure, interior guiding axle sets up respectively between two grinding wheels and is used for buckling into the V-arrangement with the inboard drive belt direction between this two grinding wheels, and the drive belt compresses tightly in grinding wheel and realizes the transmission cooperation.

Further, a strip-shaped adjusting chute is arranged in the annular shell along the radial direction, the wheel shaft of the polishing wheel is arranged in the adjusting chute in a sliding mode along the radial direction, the pre-tightening springs are in one-to-one correspondence with the wheel shafts of the polishing wheel, the pre-tightening springs are arranged on the radial outer side of the wheel shaft of the polishing wheel and apply elastic pre-tightening force inwards along the radial direction to the wheel shaft of the polishing wheel, the wheel shaft of the driving belt wheel is rotatably arranged on the handle shell in a mode that the position of the wheel shaft of the driving belt wheel along the length direction of the handle shell is adjustable, the driving belt drives the polishing wheels to slide in the adjusting chutes corresponding to the driving belt and position under the action of the pre-tightening springs, and therefore radius adjustment of the polishing surface is.

Further, the handle shell is provided with a strip-shaped driving sliding groove along the length direction of the handle shell, the wheel shaft of the driving belt wheel is arranged in the driving sliding groove in a sliding mode along the length direction, and the handle shell further comprises a driving positioning assembly used for driving and positioning the wheel shaft of the driving belt wheel.

Furthermore, the driving positioning assembly comprises a driving screw and a supporting nut fixed on the handle shell, and the front end thread of the driving screw penetrates through the supporting nut and is pressed against the driving belt wheel shaft backwards along the length direction of the handle shell.

Further, the grinding wheel axle and the driving pulley axle are respectively provided with a rolling bearing at the end part, the inner ring of each rolling bearing is fixedly sleeved on the corresponding axle, and the outer circle of the outer ring of each fixed bearing is arranged in a kidney-shaped hole and is installed in the corresponding sliding groove in a form-fitting manner.

Furthermore, two grinding wheels are arranged at intervals along the axial direction of the corresponding wheel shaft, a middle annular groove for installing a driving belt is formed between two adjacent grinding wheels in the axial direction, and the driving belt is in driving contact with the groove bottom of the middle annular groove.

Further, form shape-adapted fixed being provided with along the last annular mounting panel that the axial is parallel and annular mounting panel down in the annular shell, adjust the spout for offering the regulation mouth of the strip form on last annular mounting panel and the annular mounting panel down, the wheel shaft both ends of the wheel of polishing all are provided with antifriction bearing and each antifriction bearing slidable mounting in corresponding regulation mouth.

The invention has the beneficial effects that: according to the sander for the pier reinforcing steel bars, the sanding wheel is driven to rotate highly, the derusting device is driven to move up and down manually and to swing circumferentially in a small amplitude, the sanding face can be rapidly derusted on the pier reinforcing steel bars, the working efficiency is high, the construction period is shortened, the sander is simple and light in structure, and the sander is convenient to operate.

Drawings

The invention is further described below with reference to the following figures and examples:

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

FIG. 2 is a schematic view of the grinding wheel of the present invention;

fig. 3 is a schematic structural view of the annular mounting plate of the present invention.

Detailed Description

Fig. 1 is a schematic structural view of the present invention, fig. 2 is a schematic structural view of a grinding wheel according to the present invention, and fig. 3 is a schematic structural view of an annular mounting plate according to the present invention, and as shown in the drawings, the sander for pier rebars in the present embodiment includes a housing, a grinding wheel set installed in the housing, and a driving assembly for driving the grinding wheel set to rotate; the shell comprises an annular shell of an annular structure and used for mounting a grinding wheel set, and a handle shell 2 of a rod-shaped structure, wherein the handle shell is communicated with the annular shell and is fixed along the radial direction, the annular shell comprises a left semi-annular shell 1b and a right semi-annular shell 1a, the handle shell is fixedly connected with one end of the left semi-annular shell, which is fixedly connected with the handle shell, is hinged with one end of the right semi-annular shell, the other end of the left semi-annular shell and the other end of the right semi-annular shell rotate through the right semi-annular shell to open or close the annular shells, and a lock catch 15 used for locking the annular shells is arranged between the other end of the left semi-annular shell and the other; the lock catch is the prior art, and is not described again; the grinding wheel set comprises a plurality of grinding wheels which are rotatably arranged on the annular shell, the plurality of grinding wheels are distributed along the circumferential direction of the annular shell, and the outer circles of the plurality of annular wheels surround the middle of the annular shell to form an annular grinding surface; when the device is used, the lock catch is opened, the right half annular shell is opened to enable the annular shell to be sleeved on the reinforcing steel bar, and further enable the polishing surface to be sleeved on the outer circle of the reinforcing steel bar, the outer circle shell of the polishing wheel is fixedly provided with a steel wire layer, the polishing wheel is driven to rotate in a high degree, the derusting device is manually driven to move up and down and circumferentially swing in a small degree, the polishing surface can rapidly derust the reinforcing steel bar of the pier, the working efficiency is high, the construction period is shortened, and the device is simple and light in; of course, the grinding wheel may be independently configured with a group of driving assemblies, or a group of driving assemblies may simultaneously drive a plurality of grinding wheels to rotate, so as to achieve the object of the present invention, and further description is omitted here.

In this embodiment, the driving assembly comprises a driving motor and a transmission assembly in transmission connection between the grinding wheel 7 and the driving motor; the transmission assembly comprises a driving belt wheel 3 rotatably arranged in the handle shell 2, a transmission belt 4 in transmission connection between the driving belt wheel 3 and the grinding wheel 7, and a plurality of guide shafts rotatably arranged in the shell and used for guiding the transmission belt 4; the driving belt wheel 3 is in driving fit with a rotating shaft of a driving motor, the guide shafts comprise a plurality of outer guide shafts 5 and inner guide shafts 6 which are arranged from outside to inside along the radial direction, the outer guide shafts 5 and the inner guide shafts 6 are respectively distributed along the circumferential direction, the driving belt 4 is wound around the driving belt wheel 3 and each polishing wheel and is arranged in the shell in a shape-fitting manner under the action of the guide shafts and is in an annular Y-shaped structure, the inner guide shafts 6 are respectively arranged between the two polishing wheels and used for guiding and bending the inner side driving belt 4 between the two polishing wheels into a V shape, and the driving belt 4 is tightly pressed on the polishing wheels and realizes the driving fit; all the grinding wheels are driven by one driving motor, so that the grinding wheel is simple and compact in structure, light in weight and low in cost; the number of the grinding wheels is 6.

In this embodiment, a strip-shaped adjusting chute 8 is radially arranged in the annular shell, the wheel shaft of the polishing wheel is radially and slidably mounted in the adjusting chute 8, the polishing device further comprises a pre-tightening spring 9 which is in one-to-one correspondence with the wheel shaft of the polishing wheel, the pre-tightening spring 9 is arranged on the radial outer side of the wheel shaft of the polishing wheel and applies an elastic pre-tightening force which is radially inward to the wheel shaft of the polishing wheel, the wheel shaft of the driving pulley 3 is rotatably arranged on the handle shell 2 in a manner of being adjustable along the length direction of the handle shell 2, and the driving belt 4 drives a plurality of polishing wheels to slide in the adjusting chutes 8 corresponding to the driving belt 4 and is positioned under the action of the pre-tightening spring 9 by adjusting the position of the wheel shaft of the driving pulley 3 along the length direction of; the radial direction that all indicates the ring groove, the front end and the annular shell of handle shell 2 are fixed, and this structure does benefit to the radius regulation of the face of polishing, realizes polishing the reinforcing bar of different radiuses, increases application scope.

In this embodiment, the handle case 2 is provided with a strip-shaped driving chute 10 along the length direction thereof, the wheel shaft of the driving pulley 3 is slidably arranged in the driving chute 10 along the length direction, and the handle case further comprises a driving positioning assembly for driving and positioning the wheel shaft of the driving pulley 3; the driving positioning assembly comprises a driving screw and a supporting nut fixed on the handle shell 2, and the front end thread of the driving screw penetrates through the supporting nut and is pressed against the wheel shaft of the driving belt wheel 3 backwards along the length direction of the handle shell 2; of course, the driving positioning assembly may further include a pulling frame for driving the wheel shaft of the driving pulley 3 to move backward, the pulling frame is in threaded fit with the driving screw, the driving screw is rotatably installed in the supporting nut in a single degree of freedom and is in threaded fit with the pulling frame, and a screw-nut pair is formed between the pulling frame and the driving screw.

In this embodiment, the grinding wheel axle 11 and the end of the axle of the driving pulley 3 are both provided with rolling bearings, the inner rings of the rolling bearings are both fixed and externally sleeved on the corresponding axles, and the outer circles of the outer rings of the fixed bearings are arranged in kidney-shaped holes and are installed in corresponding sliding grooves in a form-fitting manner; of course, the grinding wheel axle and the driving pulley 3 axle 12 can be axially fixed by respectively arranging cover plates at the two axial ends, and the rolling bearing with the structure is beneficial to the stable installation after the corresponding axle slides.

In the embodiment, two grinding wheels are arranged at intervals along the axial direction of the corresponding wheel shaft, a middle ring groove 13 for installing a transmission belt 4 is formed between two adjacent grinding wheels in the axial direction, and the transmission belt 4 is in driving contact with the groove bottom of the middle ring groove 13; the stress balance is facilitated, and the smooth operation is ensured.

In this embodiment, the annular shell is internally and conformally fixed with an upper annular mounting plate and a lower annular mounting plate which are arranged in parallel along the axial direction, and the upper annular mounting plate and the lower annular mounting plate are respectively composed of a left annular mounting plate 14b fixed with the left semi-annular shell and a right annular mounting plate 14a fixed with the right semi-annular shell; the adjusting sliding chute 8 is a strip-shaped adjusting opening formed in the upper annular mounting plate and the lower annular mounting plate, rolling bearings are arranged at two ends of the wheel shaft of the polishing wheel, and each rolling bearing is slidably mounted in the corresponding adjusting opening; the fixed mounting of guiding axle is between last annular mounting panel and lower annular mounting panel, and the guiding axle overcoat is provided with the antifriction bearing that is used for 4 direction of drive belt, guarantees stable in structure.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. The utility model provides a sander for pier reinforcing bar which characterized in that: comprises a shell, a grinding wheel group arranged in the shell and a driving component used for driving the grinding wheel group to rotate; the shell comprises an annular shell of an annular structure and used for mounting a grinding wheel set, and a handle shell of a rod-shaped structure, wherein the handle shell is communicated with the annular shell and is fixed in the radial direction; the grinding wheel set comprises a plurality of grinding wheels which are rotatably arranged on the annular shell, the plurality of grinding wheels are distributed along the circumferential direction of the annular shell, and the outer circles of the plurality of annular wheels surround the middle of the annular shell to form an annular grinding surface; the driving assembly comprises a driving motor and a transmission assembly in transmission connection between the grinding wheel and the driving motor; the transmission assembly comprises a driving belt wheel rotatably arranged in the handle shell, a transmission belt in transmission connection between the driving belt wheel and the grinding wheel, and a plurality of guide shafts rotatably arranged in the shell and used for guiding the transmission belt; the driving belt wheel is in driving fit with a rotating shaft of the driving motor, the guide shafts comprise an outer guide shaft and an inner guide shaft which are arranged from outside to inside along the radial direction, the outer guide shaft and the inner guide shaft are respectively distributed along the circumferential direction, the driving belt is wound around the driving belt wheel and each polishing wheel and is arranged in the shell in a shape-fitting manner under the action of the guide shafts and is of an annular Y-shaped structure, the inner guide shaft is respectively arranged between the two polishing wheels and is used for guiding and bending an inner side driving belt between the two polishing wheels into a V shape, and the driving belt is tightly pressed on the polishing wheels and realizes the driving fit; the polishing device comprises an annular shell, a polishing wheel, a pre-tightening spring, a driving belt wheel and a pre-tightening spring, wherein a strip-shaped adjusting chute is arranged in the annular shell along the radial direction, a wheel shaft of the polishing wheel is arranged in the adjusting chute in a sliding manner along the radial direction, the pre-tightening spring is in one-to-one correspondence with the wheel shaft of the polishing wheel, is arranged at the radial outer side of the wheel shaft of the polishing wheel and applies elastic pre-tightening force inwards along the radial direction to the wheel shaft of the polishing wheel, the wheel shaft of the driving belt wheel is rotatably arranged on the handle shell in a manner of being adjustable along the length direction of the handle shell, and the driving belt drives a plurality of polishing wheels to slide in the adjusting chutes corresponding to the driving belt wheel shaft and; the handle shell is provided with a strip-shaped driving sliding groove along the length direction of the handle shell, a wheel shaft of the driving belt wheel is arranged in the driving sliding groove in a sliding mode along the length direction, and the handle shell further comprises a driving positioning assembly used for driving and positioning the wheel shaft of the driving belt wheel; the driving positioning assembly comprises a driving screw and a supporting nut fixed on the handle shell, and the front end thread of the driving screw penetrates through the supporting nut and is pressed against the driving belt wheel shaft backwards along the length direction of the handle shell.

2. The sander for pier rebars of claim 1, wherein: the grinding wheel axle and the driving belt wheel axle are respectively provided with a rolling bearing at the end part, the inner ring of each rolling bearing is fixedly sleeved on the corresponding axle, and the outer circle of the outer ring of each fixed bearing is arranged in a kidney-shaped and shape-fitted manner in the corresponding sliding groove.

3. The sander for pier rebars of claim 2, wherein: two grinding wheels are arranged at intervals along the axial direction of the corresponding wheel shaft, a middle annular groove for installing a driving belt is formed between two adjacent grinding wheels in the axial direction, and the driving belt is in driving contact with the groove bottom of the middle annular groove.

4. The sander for pier rebars of claim 3, wherein: form shape fixed being provided with along the axial last annular mounting panel that parallels and annular mounting panel down in the annular shell, adjust the spout for offering the regulation mouth of the strip form on last annular mounting panel and the annular mounting panel down, the wheel shaft both ends of polishing all are provided with antifriction bearing and each antifriction bearing slidable mounting in corresponding regulation mouth.