CN114789386A

CN114789386A - Precast beam external mold grinding device

Info

Publication number: CN114789386A
Application number: CN202210621611.2A
Authority: CN
Inventors: 刘瑾; 李文涛; 于复生; 王成涛; 马志明; 曹蕾; 张辛铎; 沈孝芹; 张涵; 范文利; 衣杰; 和西国; 和树贵; 徐学军; 李洪升
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-07-26
Anticipated expiration: 2042-06-02
Also published as: CN114789386B

Abstract

The invention relates to a precast beam outer die grinding device which comprises a grinding module, a pitching module, an STM32 control module, a chassis module, a wheel axle module and a support module. The pitch angle is adjusted through an electric push rod of the pitch module, so that the polishing device is tightly attached to the outer template, the polishing mechanism is installed on a trolley with a control module, and the trolley reciprocates along a fixed guide rail under the control of the control module, so that the polishing device is the outer template polishing device with high automation, and belongs to the field of building construction equipment. The intelligent polishing machine has the beneficial effects that polishing work can be intelligently executed, the polishing efficiency is ensured, the polishing quality is improved, meanwhile, the burden of workers is reduced, and the health of the workers is protected.

Description

Precast beam external mold grinding device

Technical Field

The invention relates to a precast beam outer mold polishing device, which particularly adopts a motor to drive a polishing disc, adjusts a pitch angle by an electric push rod, enables the polishing device to be tightly attached to an outer template, installs a polishing mechanism on a trolley with a control module, and reciprocates the trolley along a fixed guide rail under the control of the control module.

Background

In the building construction process, the use of steel form can not be left in pouring of concrete, and the steel form can remain the lime-ash on the surface after using the completion, still can produce rust stain etc. because of the existence of moisture, consequently need clear up and polish to improve the use in life and the later stage of being convenient for. The existing grinding is mainly carried out manually, a flat shovel is usually used for shoveling, a steel wire brush or an angle grinder is used for manually grinding, the grinding efficiency is very low, the labor intensity is extremely high, and in addition, dust can also harm the health of workers.

A steel template polishing device (patent number: CN 112676995A) invented by Jiangkong, Yue-Jue, Wang-Wenqi and the like of the middle building harbor group Limited company comprises a polishing head and a holding rod, wherein the holding rod is connected to the top of the polishing head, the polishing head comprises a dust suction mechanism and a polishing mechanism, the dust suction mechanism comprises a dust suction hood, a dust suction fan and an exhaust pipe, the dust suction fan is arranged at the top of the dust suction hood and is communicated with the exhaust pipe, and the tail end of the exhaust pipe is connected with a dust removal bag.

Disclosure of Invention

The invention provides a polishing device for an external mold of a precast beam, aiming at the problems that the surface of the existing template is polished manually, the operation automation degree is low, the efficiency is low, and dust damages the bodies of workers.

The invention is realized by the following technical scheme: the utility model provides a precast beam external mold grinding device, is become by module of polishing, every single move module, STM32 control module, chassis module, shaft module and support module, the module of polishing articulate on supporting the module, every single move module one end with polish the module articulated, the other end is articulated with supporting the module, STM32 control module pass through the mounting screw on supporting the module, the support module pass through the screw rigid coupling on chassis module, shaft module pass through the screw rigid coupling in chassis module bottom.

The polishing module comprises an external support of the polishing machine, an internal support of the polishing machine and the polishing machine, wherein the internal support of the polishing machine is installed on a longitudinal support of the external support of the polishing machine through a right-angle code, and the polishing machine is installed on the internal support of the polishing machine through a long bolt.

The outer support of the grinding machine is a rectangular frame which is composed of aluminum profiles and right-angle corner connectors and is formed by fixing the aluminum profiles through the right-angle corner connectors.

The polisher in support and constitute by polisher fixed plate, speed reducer fixed plate, stay bolt, notch elasticity knot and gear motor locating plate, the polisher fixed plate pass through "mouthful" style of calligraphy module front portion that T type screw rigid coupling constitutes at aluminium section bar, "mouthful" inboard of style of calligraphy module is passed through notch elasticity and is detained fixedly, the speed reducer fixed plate pass through T type screw rigid coupling at "mouthful" style of calligraphy module rear portion, the rear portion rigid coupling of a second "mouthful" style of calligraphy module has the gear motor locating plate, two "mouthful" style of calligraphy modules pass through aluminium alloy and notch elasticity knot and connect.

The grinding machine consists of a grinding disc, a first sleeve, a sleeve fixing cover, a second sleeve, a spring, a sleeve end cover, a tapered roller bearing, a bearing seat and a speed reducing motor, the grinding disc is fixedly connected on the first sleeve through a threaded hole, the first sleeve is nested in the second sleeve, the sleeve end cover is arranged at the flange of the second sleeve through a screw, the spring is nested in the second sleeve, one end of the spring is propped against the first sleeve, the other end of the spring is propped against the sleeve end cover, the tapered roller bearing is arranged in the bearing seat, the bearing seat is arranged in the sleeve fixing cover, the tapered tail part of the sleeve end cover is in close contact with the inner ring of the tapered roller bearing, the sleeve fixing cover is matched with the speed reducing motor through a hexagonal shaft, and the sleeve fixing cover and the speed reducing motor are respectively arranged on a grinding machine fixing plate and a speed reducing motor fixing plate through long bolts.

Every single move module support by triangle connecting plate, electric putter, push rod and detain and the aluminium alloy is constituteed, the triangle connecting plate pass through T type screw and install on the aluminium alloy to constitute "triangle module", this "triangle module" supports outside through T type screw and right angle sign indicating number and the grinding machine and is connected, electric putter support through the push rod and detain and articulate with "triangle module" and support module respectively.

The base plate module constitute by alloy chassis, hold-in range, synchronizing wheel, driving motor, solid fixed ring and storage battery, the alloy chassis on have a little rectangle through-hole and a big rectangle recess, be equipped with a plurality of linear arrangement's through-hole simultaneously at the periphery, the bottom is equipped with the screw hole, driving motor pass through the bolt and install on the alloy chassis, hold-in range and synchronizing wheel install on driving motor, the hold-in range passes through the rectangle through-hole and is connected with the shaft module, storage battery fixed position install in rectangle recess department to through solid fixed ring and bolt rigid coupling on the alloy chassis.

The wheel shaft module comprises a wheel bolt, a wheel, a short sleeve, a wheel bearing seat, a cylindrical roller bearing, a wheel shaft, a long sleeve and a synchronizing wheel, wherein the synchronizing wheel is arranged at a positioning shaft shoulder of the wheel shaft, one end of the long sleeve is abutted against the synchronizing wheel, the other end of the long sleeve is abutted against an inner ring of the cylindrical roller bearing, the cylindrical roller bearing is positioned through the shaft shoulder and is embedded in the wheel bearing seat, one end of the short sleeve is abutted against the inner ring of the cylindrical roller bearing, the other end of the short sleeve is abutted against the wheel, the wheel bolt tightly presses the wheel and is arranged at two ends of the wheel shaft through threads, and the wheel shaft module is arranged at the bottom of the alloy chassis through the wheel bearing seat and a screw.

The supporting module consists of a front dust guard, a hinged plate, an upper dust guard and a total supporting frame, the total supporting frame is an L-shaped support consisting of an aluminum profile and a right-angle corner brace, the hinged plate, the front dust guard and the upper dust guard are fixed on the total supporting frame through T-shaped screws, and meanwhile, the STM32 control module is installed on the upper dust guard through screws.

The intelligent polishing device has the beneficial effects that the polishing device can intelligently execute polishing work, the polishing efficiency is ensured, the polishing quality is improved, meanwhile, the burden of workers is reduced, and the health of the workers is protected. The device can adjust the grinding angle through the pitching module so that the grinding machine is tightly attached to the outer surface of the precast beam template; the elastic expansion device arranged inside the polishing machine can enable the polishing disc to be tightly attached to the outer surface of the precast beam all the time when the polishing disc moves, and meanwhile, the damage of the polishing disc caused by hard protrusions on the outer template can be avoided; the device can set the time of the timer through an STM32 module according to the length of a steel rail, so that the device can be used for precast beam templates with various lengths, and meanwhile, the number of times of reciprocating motion of the grinding machine can be set through setting the counting number of times of an STM32 module, so that grinding effects with different qualities can be obtained; the polishing disc of the device is convenient to disassemble and assemble and convenient to maintain; the grinding machine of the device is in a modular design and is arranged on the aluminum profile with the sliding groove, so that the mounting position and the mounting number can be adjusted at any time according to the working condition, and the grinding machine has strong migration and generalization capability; the device is manufactured by using a large number of standard parts, the manufacturing cost is very low, and meanwhile, the modularized design is adopted, so that the device is simple and convenient to maintain; in general, the device can adjust according to the operating mode of difference to intelligent executive work has improved work efficiency, work quality, has alleviateed staff's burden greatly, has protected its health.

Drawings

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

FIG. 2 is a side view of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a schematic view of the working state of the present invention;

FIG. 5 is a schematic view of the polishing module of FIG. 1;

FIG. 6 is an exploded view of the sanding module of FIG. 5;

FIG. 7 is a schematic view of an external support structure of the sander of FIG. 6;

FIG. 8 is a front isometric exploded view of the sander and sander inner support of FIG. 6;

FIG. 9 is a rear elevational isometric exploded view of the sander and sander inner support of FIG. 6;

figure 10 is an exploded view of the support inside the sander of figure 6;

FIG. 11 is an exploded view of the sander of FIG. 6;

FIG. 12 is an assembled side view of the first sleeve of FIG. 11;

FIG. 13 is an isometric view of the first sleeve of FIG. 11 after assembly;

FIG. 14 is an isometric front view of the sleeve retainer cap of FIG. 11 assembled;

FIG. 15 is an isometric view of the sleeve retainer cap of FIG. 11 after assembly;

fig. 16 is a schematic view of the pitch module of fig. 1;

FIG. 17 is a schematic diagram of the construction of the STM32 control module of FIG. 1;

FIG. 18 is a block diagram of the components of the control module of FIG. 17;

FIG. 19 is a schematic view of the structure of the chassis module of FIG. 1;

FIG. 20 is an exploded view of the chassis module of FIG. 19;

FIG. 21 is a schematic structural view of the axle module of FIG. 1;

FIG. 22 is an exploded view of the axle construction of FIG. 21;

FIG. 23 is a schematic view of the support module of FIG. 1;

FIG. 24 is a rear isometric view of the support module of FIG. 1;

FIG. 25 is a schematic structural view of the hinge plate of FIG. 24;

FIG. 26 is a schematic diagram of the abrasive disk of FIG. 11;

FIG. 27 is a schematic view of the first sleeve of FIG. 11;

FIG. 28 is a schematic view of the sleeve retaining cap of FIG. 11;

FIG. 29 is a schematic view of the interior of the second sleeve of FIG. 11;

FIG. 30 is a schematic view of the exterior of the second sleeve of FIG. 11;

FIG. 31 is a schematic structural view of the end cap of the sleeve of FIG. 11;

FIG. 32 is a front view of the sleeve end cap of FIG. 11;

FIG. 33 is a top view of the sleeve end cap of FIG. 11;

FIG. 34 is a schematic view of the bearing housing of FIG. 11;

FIG. 35 is a schematic structural view of the right angle bracket of FIG. 7;

FIG. 36 is a schematic view of the elastic buckle with slot in FIG. 10;

FIG. 37 is a rear view of the alloy base pan of FIG. 19;

FIG. 38 is a front view of the alloy base plate of FIG. 19;

FIG. 39 is a front isometric view of the alloy base pan of FIG. 19;

FIG. 40 is a schematic view of the axle of FIG. 19;

FIG. 41 is a front elevational view of the wheel of FIG. 19;

FIG. 42 is a front isometric view of the wheel of FIG. 19;

FIG. 43 is a front view of the front dust guard of FIG. 23;

FIG. 44 is a front view of the upper dust guard of FIG. 23;

FIG. 45 is a schematic view of a T-shaped screw;

FIG. 46 is an assembly view of the T-bolt;

FIG. 47 is a control module algorithm diagram.

In the figure, 1, a grinding module, 2, a pitching module, 3, an STM32 control module, 4, a chassis module, 5, an axle module, 6, a support module, 7, a steel rail, 8, a precast beam outer template, 9, a T-shaped screw, 101, a grinder outer support, 102, a grinder inner support, 103, a grinder, 201, a triangular connecting plate, 202, an electric push rod, 203, a push rod support buckle, 401, an alloy chassis, 402, a synchronous belt, 403, a synchronous wheel, 404, a driving motor, 405, a fixed ring, 406, a battery jar, 501, a wheel bolt, 502, a wheel, 503, a short sleeve, 504, a wheel bearing seat, 505, a cylindrical roller bearing, 506, an axle, 507, a long sleeve, 601, a front dustproof plate, 602, a hinged plate, 603, an upper dustproof plate, 604, a general support frame, 10101, an aluminum section bar, 10102, a right-angle code, 10201, a grinder fixing plate, 02 and a speed reducer fixing plate, 10203. the long bolt, 10204, notch elasticity are detained, 10205, gear motor locating plate, 10301, the dish of polishing, 10302, first sleeve, 10303, the fixed lid of sleeve, 10304, the second sleeve, 10305, the spring, 10306, sleeve end cover, 10307, tapered roller bearing, 10308, the bearing frame, 10309, gear motor.

Detailed Description

The utility model provides a precast beam external mold grinding device, is by module 1, every single move module 2, STM32 control module 3, chassis module 4, shaft module 5 and support module 6 and constitute of polishing, module 1 of polishing articulate on supporting

module

6, 2 one end of every single move module articulated with module 1 of polishing, the other end is articulated with support module 6, STM32 control module 3 pass through the mounting screw on support module 6, support module 6 pass through the screw rigid coupling on chassis module 4, shaft module 5 pass through the screw rigid coupling in chassis module 4 bottom.

The grinding module 1 is composed of an outer grinding machine support 101, an inner grinding machine support 102 and a grinding machine 103, wherein the inner grinding machine support 102 is installed on a longitudinal support of the outer grinding machine support 101 through a right-angle code 10102, and the grinding machine 103 is installed on the inner grinding machine support 102 through a long bolt 10203.

The external support 101 of the grinding machine is composed of an aluminum profile 10101 and a right-angle corner connector 10102, and a rectangular frame composed of the aluminum profile 10101 is fixed through the right-angle corner connector 10102.

Grinder in support 102 constitute by grinder fixed plate 10201, speed reducer fixed plate 10202, long bolt 10203, notch elasticity knot 10204 and gear motor locating plate 10205, grinder fixed plate 10201 pass through "mouth" style of calligraphy module front portion that T type screw 9 rigid coupling is constituteed at aluminium alloy 10101, "the inboard of mouth" style of calligraphy module is fixed through notch elasticity knot 10204, speed reducer fixed plate 10202 pass through T type screw rigid coupling at "mouth" style of calligraphy module rear portion, the rear portion rigid coupling of second "mouth" style of calligraphy module has gear motor locating plate 10205, two "mouth" style of calligraphy modules pass through aluminium alloy 10101 and notch elasticity knot 10204 and connect.

The sander 103 is composed of a sanding disc 10301, a first sleeve 10302, a sleeve fixing cover 10303, a second sleeve 10304, a spring 10305, a sleeve end cover 10306, a tapered roller bearing 10307, a bearing seat 10308 and a speed reducing motor 10309, wherein the sanding disc 10301 is fixedly connected to the first sleeve 10302 through a threaded hole, the first sleeve 10302 is nested in the second sleeve 10304, the sleeve end cover 10306 is installed on a flange of the second sleeve 10304 through a screw, the spring 10305 is nested in the second sleeve 10304, one end of the spring 10305 abuts against the first sleeve 10302, the other end of the spring 10305 abuts against the sleeve end cover 10306, the tapered roller bearing 10307 is installed in the bearing seat 10308, the bearing seat 10308 is installed in the sleeve fixing cover 10303, a tapered tail part of the sleeve end cover 10306 is in close contact with an inner ring of the tapered roller bearing 10307, the sleeve fixing cover 10303 is matched with the speed reducing motor 10309 through a hexagonal shaft 10309, the two are respectively installed on a grinding machine fixing plate 10201 and a speed reducer fixing plate 10202 through long bolts 10203.

The pitching module 2 is composed of a triangular connecting plate 201, an electric push rod 202, a push rod supporting buckle 203 and an aluminum profile 10101. Triangle connecting plate 201 pass through T type screw installation on aluminium alloy 10101 to constitute "triangle module", this "triangle module" is connected with the external support 101 of grinding machine through T type screw 9 and right angle sign indicating number 10102, electric putter 202 support to detain 203 through the push rod and articulate with "triangle module" and support module 6 respectively.

The chassis module 4 comprises an alloy chassis 401, a synchronous belt 402, a synchronous wheel 403, a driving motor 404, a fixing ring 405 and a storage battery 406, wherein the alloy chassis 401 is provided with a small rectangular through hole and a large rectangular groove, a plurality of linearly arranged through holes are formed in the periphery of the alloy chassis 401, a threaded hole is formed in the bottom of the alloy chassis 401, the driving motor 404 is installed on the alloy chassis 401 through bolts, the synchronous belt 402 and the synchronous wheel 403 are installed on the driving motor 404, the synchronous belt 402 is connected with the wheel shaft module 5 through the rectangular through hole, the storage battery 406 is positioned and installed in the rectangular groove and fixedly connected to the alloy chassis 401 through the fixing ring 405 and the bolts.

The wheel axle module 5 is composed of a wheel bolt 501, a wheel 502, a short sleeve 503, a wheel bearing seat 504, a cylindrical roller bearing 505, a wheel axle 506, a long sleeve 507 and a synchronizing wheel 403, wherein the synchronizing wheel 403 is installed at a positioning shaft shoulder of the wheel axle 506, one end of the long sleeve 507 is abutted against the synchronizing wheel 403, the other end of the long sleeve 507 is abutted against an inner ring of the cylindrical roller bearing 505, the cylindrical roller bearing 505 is positioned through the shaft shoulder and is nested inside the wheel bearing seat 504, one end of the short sleeve 503 is abutted against the inner ring of the cylindrical roller bearing 505, the other end of the short sleeve 503 is abutted against the wheel 502, the wheel bolt 501 tightly presses the wheel and is installed at two ends of the wheel axle 506 through threads, and the wheel axle module 5 is installed at the bottom of the alloy chassis 401 through the wheel bearing seat 504 and screws.

The supporting module 6 is composed of a front dust guard 601, a hinge plate 602, an upper dust guard 603 and a general supporting frame 604, the general supporting frame 604 is an L-shaped support composed of an aluminum profile 10101 and a right-angle corner code 10102, the hinge plate 602, the front dust guard 601 and the upper dust guard 603 are fixed on the general supporting frame 604 through T-shaped screws 9, and meanwhile, the STM32 control module 3 is installed on the upper dust guard 603 through screws.

During operation places precast beam external mold grinding device on rail 7 to through host computer signals control every single move module 2, make the module 1 of polishing tightly laminate on exterior sheathing 8, later rethread host computer sends actuating signal, makes each motor start, and grinding device begins to be reciprocating motion along rail 7, the exterior sheathing 8 of polishing.

It will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments described above without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims.

Claims

1. The utility model provides a precast beam external mold grinding device, is by polishing module, every single move module, STM32 control module, chassis module, shaft module and support module constitution, its characterized in that: the bottom of the polishing module is hinged to an aluminum profile on the top of the supporting module, one end of the pitching module is fixedly connected with the side edge of the polishing module through a right-angle corner brace, the other end of the pitching module is hinged to an aluminum profile framework of the supporting module through a push rod supporting buckle, the STM32 control module is installed on the supporting module through screws, the control module is connected with each motor through a signal line, the supporting module is of an L-shaped three-dimensional framework structure, a plurality of linearly-arranged right-angle corner braces are arranged at the edge of the bottom of the supporting module and fixedly connected to through holes in the periphery of the chassis module through bolts, and the wheel shaft module is fixedly connected to the bottom of the chassis module through screws;

the polishing module consists of an external support of the polishing machine, an internal support of the polishing machine and the polishing machine, wherein the external support of the polishing machine consists of an aluminum profile and a right-angle corner brace, the aluminum profile is fixed through the right-angle corner brace to form a rectangular frame, the internal support of the polishing machine is arranged on a longitudinal support of the external support of the polishing machine through the right-angle corner brace, and the polishing machine is arranged on the internal support of the polishing machine through a long bolt;

the internal support of the grinding machine is composed of a grinding machine fixing plate, a speed reducer fixing plate, a long bolt, a notch elastic buckle and a speed reduction motor positioning plate, wherein the grinding machine fixing plate is fixedly connected to the front part of a square module composed of aluminum profiles through T-shaped screws, the inner sides of the square modules are fixedly connected through the notch elastic buckle, the speed reducer fixing plate is fixedly connected to the rear part of the square module through T-shaped screws, the rear part of the second square module is fixedly connected with the speed reduction motor positioning plate, and the two square modules are connected through the aluminum profiles and the notch elastic buckle;

the polisher comprise a polishing disc, a first sleeve, a sleeve fixing cover, a second sleeve, a spring, a sleeve end cover, a tapered roller bearing, a bearing seat and a speed reducing motor, wherein the polishing disc is fixedly connected onto the first sleeve through a threaded hole, the first sleeve is nested into the second sleeve, the sleeve end cover is mounted at a flange of the second sleeve through a screw, the spring is nested into the second sleeve, one end of the spring is abutted onto the first sleeve, the other end of the spring is abutted onto the sleeve end cover, the tapered roller bearing is mounted in the bearing seat, the bearing seat is mounted in the sleeve fixing cover, a tapered tail of the sleeve end cover is in close contact with an inner ring of the tapered roller bearing, the sleeve fixing cover and the speed reducing motor are matched through a hexagonal shaft, and the sleeve fixing cover and the speed reducing motor are mounted on a polisher fixing plate and a speed reducing motor fixing plate respectively through long bolts.

2. The precast beam external mold grinding device of claim 1, wherein: every single move module support by triangle connecting plate, electric putter, push rod and detain and the aluminium alloy is constituteed, the triangle connecting plate passes through T type screw and installs on the aluminium alloy to constitute "triangle module", this "triangle module" supports outside through T type screw and right angle sign indicating number and the grinding machine and is connected, electric putter support through the push rod and detain and articulate with "triangle module" and support module respectively.

3. The precast beam external mold grinding device of claim 1, wherein: the base plate module comprises an alloy base plate, a synchronous belt, a synchronous wheel, a driving motor, a fixing ring and a storage battery, wherein the driving motor is installed on the alloy base plate through a bolt, the synchronous belt and the synchronous wheel are installed on the driving motor, the synchronous belt is connected with a wheel shaft module through a rectangular through hole of an alloy base, and the storage battery is fixedly installed at a rectangular groove of the alloy base and fixedly connected onto the alloy base plate through the fixing ring and the bolt.

4. The precast beam outer die grinding device as claimed in claim 1, wherein: the wheel shaft module comprises a wheel bolt, a wheel, a short sleeve, a wheel bearing seat, a cylindrical roller bearing, a wheel shaft, a long sleeve and a synchronous wheel, wherein the synchronous wheel is arranged at a positioning shaft shoulder of the wheel shaft, one end of the long sleeve is propped against the synchronous wheel, the other end of the long sleeve is propped against an inner ring of the cylindrical roller bearing, the cylindrical roller bearing is positioned through the shaft shoulder and is embedded in the wheel bearing seat, one end of the short sleeve is propped against the inner ring of the cylindrical roller bearing, the other end of the short sleeve is propped against the wheel, the wheel bolt tightly presses the wheel and is arranged at two ends of the wheel shaft through threads, and the wheel shaft module is arranged at the bottom of the alloy base through the wheel bearing seat and the screw.

5. The precast beam external mold grinding device of claim 1, wherein: the support module by preceding dustproof version, articulated slab, go up dust guard and total support frame and constitute, total support frame is by "L type" support of aluminium alloy and right angle sign indicating number, articulated slab, preceding dustproof version and last dust guard pass through T type screw fixation on total support frame, STM32 control module passes through the screw installation at last dust guard simultaneously.

6. The precast beam external mold grinding device of claim 1, wherein: one end of the first sleeve is provided with threads, and the other end of the first sleeve is provided with a hexagonal flange.

7. The precast beam external mold grinding device of claim 1, wherein: the second sleeve is internally provided with a hexagonal hole, one end of the sleeve is provided with an annular separation blade, the other end of the sleeve is provided with a circular flange, and the flange is provided with a counter bore.

8. The precast beam outer die grinding device as claimed in claim 1, wherein: the sleeve end cover is provided with a circular truncated cone-shaped protrusion, the center of the protrusion is provided with a hexagonal hole, and the periphery of the end cover is provided with a countersunk hole.

9. The chassis module of claim 3, wherein: the alloy chassis is provided with a small rectangular through hole and a large rectangular groove, a plurality of linearly arranged through holes are arranged on the periphery of the alloy chassis, and threaded holes are formed in the bottom of the alloy chassis.