CN105952127A - Connection conversion device and grinding machinery applying same - Google Patents

Abstract

The invention provides a connection conversion device and grinding machinery applying the same. The connection conversion device is a grinding machinery connecting device and comprises a connecting component, a swinging and rotating component and a grinding head component, wherein the upper part of the swinging and rotating component is connected on the connecting component; the upper part of the grinding head component is fixed on the swinging and rotating component; and under the action of the swinging and rotating component, the grinding head component can achieve planetary rotation and lateral swing. The connection conversion device has a simple and compact structure, is flexible and light, can be rapidly installed on trowelling machines or machinery with similar functions and is used as a grinder, thus achieving multiple purposes and saving cost.

Description

Connection transfer device and apply its grinding machinery

Technical field

The present invention relates to field of mechanical technique, particularly relate to a kind of connection transfer device and apply grinding of its Grinding machine tool, above-mentioned connection transfer device e.g. trowelling machine and the connection transfer device of abrasive disc.

Background technology

Ground grinding machine is mainly used for concrete, stone material, terrazzo, the milled processed on epoxy ground, Its operation principle is by driven by motor bistrique, is ground ground.But, ground in the market Surface grinding universal functionality is single, relatively costly but inefficient.

Meanwhile, the bistrique of existing ground grinding machine does not possess the ability of self regulation, is grinding injustice On whole ground, abrasive sheet can not all be fitted ground, causes on bistrique each abrasive sheet degree of wear not With, affect the Grinding Quality that ground is overall.Additionally, the powder produced in process of lapping easily blocks The groove of abrasive disc, affects grinding effect.

What trowelling machine was used for during cement concrete surface is constructed carries slurry, floating and troweling.Existing floating Machine has two big classes: disc type trowelling machine and vane type trowelling machine.Disc type trowelling machine is for concrete Carry slurry with floating；Vane type trowelling machine is then mainly used in the troweling in concrete subsequent construction, is a kind of Construction quality is good, the concrete ground construction machinery that efficiency is high.But it is used only for floating and troweling just to water The concrete layer of note, it is impossible to the concrete after solidification is done construction, function singleness further.Along with society Can develop, people generally have requirements at the higher level for the construction effect of mattess, tradition trowelling machine without Method reaches its requirement.

Summary of the invention

(1) to solve the technical problem that

In view of above-mentioned technical problem, the invention provides the connection transfer device of a kind of trowelling machine and abrasive disc And apply its grinding machinery.

(2) technical scheme

According to an aspect of the invention, it is provided a kind of connection transfer device.This connection transfer device Including: connect assembly；Swing rotary assembly, its top is connected to connect on assembly；And bistrique group Part, swing rotary assembly is fixed on its top；Wherein, under the effect of swing rotary assembly, bistrique Assembly can realize planetary rotation and sideshake.

Preferably, in connection transfer device of the present invention, grinding head assembly includes: godet, in the form of annular discs, It is fixed on swing rotary assembly；M mill joint 302, is the most uniformly fixed on godet Lower surface, abrasive disc is fixed on corresponding mill joint, M >=2.

Preferably, in connection transfer device of the present invention, abrasive disc by hasp is bonding, clamping or crimping Mode is fixed on corresponding mill joint.

Preferably, in connection transfer device of the present invention, swing rotary assembly includes: connecting shaft 307, Its upper end is fixed on below connection assembly；Roller bearing units 304, its inner ring is enclosed within connecting shaft 307 Lower end and fixed, its bearing block can rotate relative to connecting shaft 307 and swing；Locking jackscrew 305, the counterbore in its alignment connecting shaft 307, to be fastenedly connected axle 307 and roller bearing units 304.

Preferably, in connection transfer device of the present invention, connect assembly and include: upper frame body and lower frame body； Wherein: the open side of the U-shaped upper ledge 207 of upper frame body is down；The U-shaped lower frame 306 of lower frame body is opened Mouth side upward, is enclosed within U-shaped upper ledge 207, and U-shaped lower frame 306 and U-shaped upper ledge 207 use can Dismounting mode connects.

Preferably, in connection transfer device of the present invention, in upper frame body, fixed pin shaft 201 is through U-shaped The axle mouth of upper ledge the first end；Active pin shaft 205 through U-shaped upper ledge the second end elongated hole and can be at elongated hole Interior slide anteroposterior, under fastening state, active pin shaft moves to elongated hole the position near fixed pin shaft, Under dismounting state, active pin shaft moves to elongated hole the position away from fixed pin shaft, without external force feelings Under condition, described active pin shaft is in fastening state；In lower frame body, along the length direction of U-shaped lower frame, Arranging the first slot and the second slot, the distance between the first slot and the second slot is less than The distance of the dismounting position of hold-open catch 201 and active pin shaft；Under fastening state, fixing pivot pin 201 It is sticked in the first slot；Mobile pivot pin 205 is sticked in the second slot, and it withstands described second card Close groove to eliminate fit clearance.

Preferably, in connection transfer device of the present invention, the first end seal of U-shaped upper ledge is closed and leaves axis hole； Upper frame body also includes: central spindle of the spring 203 and compression spring 204, and wherein, central spindle of the spring 203 is along U The length direction of shape upper ledge is arranged, and its second end is fixed to active pin shaft 205, and its first end is by U-shaped The axis hole on the first end that upper ledge is closed passes；Compression spring 204 is sheathed on central spindle of the spring 203, Its one end contact or be fixed on the first end that U-shaped upper ledge is closed, other end contact or be fixed on described work Untie-sell axle (205).

Preferably, in connection transfer device of the present invention, the first slot and the second slot are respectively provided with In the two ends, left and right of U-shaped lower frame, wherein, the first slot is V-groove 306a, and the second draw-in groove is C-shaped channel 306b.

Preferably, in connection transfer device of the present invention, connect assembly and be fixed on trowelling machine after removal spatula Rotation bar on, and along rotate bar direction extend；The rotary shaft of trowelling machine is vertical with rotating bar, and This rotary shaft is projected as the first projection on to be ground, connects the company of assembly and swing rotary assembly Connect second projection that is projected as at position, the first projection and the second projection misaligned.

Preferably, in connection transfer device of the present invention, connect assembly and be fixed on removal at its second end After spatula on the rotation bar of trowelling machine；The top of swing rotary assembly is connected to connect assembly away from rotation The first end of bar.

Preferably, in connection transfer device of the present invention, connection member is fixed with N number of fixing nut；Turn Lever is hexagonal shaped steel 1, and it offers the N number of fixing hole corresponding with N number of fixing nut；Wherein, N number of bolt from top to bottom through fixing hole, is spirally connected with fixing nut, turns connection member to be fixed on In lever, N >=2.

According to another aspect of the present invention, it is provided that a kind of grinding applying above-mentioned connection transfer device Machinery.This grinding machinery includes: ROTATING SOURCE, and it provides a rotation bar, and this rotation bar can be parallel to One rotation with in surface of to be ground；Above-mentioned connection transfer device, it connects assembly and is fixed on rotation On source；And abrasive disc, it is fixed on the grinding head assembly of connection transfer device.

Preferably, in grinding machinery of the present invention, ROTATING SOURCE is the trowelling machine after removal spatula.

(3) beneficial effect

From technique scheme it can be seen that connection transfer device of the present invention and apply its grinding machinery At least have the advantages that one of them:

(1) simple and compact for structure, the lightest, trowelling machine can be quick installed at or there is similar merit Can mechanically use as grinder, it is achieved a tractor serves several purposes, cost-effective.

(2) connecting shaft connects fixing U-shaped lower frame and roller bearing units, and mill joint is solid by godet Being scheduled on below roller bearing units, utilize the regulation of mental activities ability of roller bearing units, bearing block can be relative to Connecting shaft any direction swings and can rotate around the axis, when being ground ground, even if ground is uneven Whole abrasive disc also can be adjacent to ground in the whole face of self regulation, because mill joint can rotate around connecting shaft, makes to own The abrasive disc degree of wear uniform, ground grinding effect is more preferable.

(3) whole connection transfer device self, and and trowelling machine, abrasive disc between, all can realize Fast Installation is dismantled, and promotes work efficiency, and device is the most convenient.

(4) abrasive disc by mill joint be uniformly distributed fixing, mill joint and nylon godet in-between between Gap is relatively big, grinds in the groove that the powder produced will not accumulate in abrasive disc.

Accompanying drawing explanation

Fig. 1 is the axonometric chart according to connection transfer device of the present invention；

Fig. 2 is the front view of connection transfer device shown in Fig. 1；

Fig. 3 is the bottom view of connection transfer device shown in Fig. 1；

Fig. 4 is the axonometric chart of upper frame body in connection transfer device shown in Fig. 1；

Fig. 5 is lower frame body in connection transfer device shown in Fig. 1, swing rotary assembly and grinding head assembly Axonometric chart；

Fig. 6 is the schematic diagram after structural demolition roller bearing units shown in Fig. 5.

[description of reference numerals]

1-hexagonal shaped steel；

201-fixed pin shaft；The spacing jump ring of 202-；203-central spindle of the spring；

204-compression spring；205-active pin shaft；206-fixes nut；

207-U shape upper ledge；

301-nylon godet；302-grinds joint；303-abrasive disc；

304-roller bearing units；305-locks jackscrew；306-U shape lower frame；

306a-V type groove；306b-C type groove；307-connecting shaft.

Detailed description of the invention

The invention provides simple and compact for structure, the lightest a kind of connection transfer device, utilize it Trowelling machine can be realized or there is the connection between the mechanical of similar functions and multiple abrasive disc, as grinding Machine uses, thus realizes a tractor serves several purposes, cost-effective.

For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with concrete real Execute example, and referring to the drawings, the present invention is described in more detail.

In one exemplary embodiment of the present invention, it is provided that a kind of trowelling machine turns with the connection of abrasive disc Changing device, utilizes it to realize the connection of trowelling machine and many abrasive discs.About trowelling machine, can refer to existing skill The related description of art, such as: Chinese utility model patent CN 205100523U, here is omitted. Refer to Fig. 1, hexagonal shaped steel 1 is for be stretched out by trowelling machine, and multiple abrasive disc 303 is fixed on connection and turns On the nylon godet 301 of changing device.

Continuing referring to Fig. 1, the present embodiment trowelling machine includes with the connection transfer device of abrasive disc: be connected Assembly；Swing rotary assembly, its top is connected to described connection assembly；Grinding head assembly, its top is solid Due to swing rotary assembly.Wherein, under the effect of described swing rotary assembly, described grinding head assembly The planetary rotation relative to described connection assembly and sideshake can be realized.

Individually below to the company between each ingredient and each several part of connection transfer device of the present invention The form of connecing is described in detail.

Connect assembly to be fixed on the hexagonal shaped steel 1 that trowelling machine stretches out, for realizing and the consolidating of trowelling machine Fixed connection, thus trowelling machine can drive multiple abrasive discs 303 rotate by this connection assembly.In view of each Quickly removing and installing of individual part, this connection assembly has carried out special design.

Refer to Fig. 1 and Fig. 2, the present embodiment connects assembly and includes: upper frame body and lower frame body.Wherein, The open side of the U-shaped upper ledge 207 of upper frame body down, is fixed on the downside of the hexagonal shaped steel 1 of trowelling machine. U-shaped lower frame 306 open side of lower frame body is enclosed within U-shaped upper ledge 207 upward, and relies on fixing axle Pin 201 and active pin 306 realize removably connecting with U-shaped upper ledge 207 ground.

Refer to Fig. 4, upper frame body includes: U-shaped upper ledge 207, fixed pin shaft 201, spacing jump ring 202, central spindle of the spring 203, compression spring 204, active pin shaft 205, fixing nut 206.Wherein U Shape upper ledge 207 U-shaped profile, one end close and leave axis hole, U-shaped upper ledge 207 is as upper ledge The main body of body, opening direction is down.Fixing nut 206 is welded on inside U-shaped upper ledge 207 in order to join Close bolt to be fixed on hexagonal shaped steel 1 by upper frame body.

Fixed pin shaft 201 is through the axle mouth of U-shaped upper ledge 207 one end.Active pin shaft 205 passes U The oval elongated hole of shape upper ledge 207 other end also can slide in elongated hole.Spacing jump ring 202 is stuck in fixing Bearing pin 201, with in the jump-ring slot at active pin 205 two ends, limits fixing pivot pin 201 and active pin 205 shifted laterallys.

One end of central spindle of the spring 203 has screw thread, and the end of thread screws in the screwed hole of active pin 205 And fixing tight, its other end mills out two plane convenient wrench fastening spring mandrels 203, central spindle of the spring 203 Axis hole through U-shaped upper ledge 207 blind end screws in active pin 205, active pin 205 and spring Mandrel 203 can move forward and backward in the oval elongated hole of U-shaped upper ledge 207.Compression spring 204 is enclosed within bullet On spring mandrel 203, and between active pin 205 and U-shaped upper ledge 207 blind end.At compression bullet Under spring 204 normal condition, the elasticity of itself is relied on to make active pin shaft 205 near fixing to being provided with The engaging position of bearing pin 201 side.In the case of active pin shaft 205 is by external force, compression spring 204 Being compressed, active pin shaft 205 can be directed away from the direction of fixed pin shaft 201 and move, and can move farthest Move the dismounting position to oval elongated hole far-end；After external force is cancelled, at the work of compression spring 204 elastic force Under with, active pin shaft 205 will be returned to the engaging position of oval elongated hole, and now, active pin shaft 205 is slightly Stress, withstands C-channel to eliminate fit clearance.

It should be noted that in the present embodiment, be with movable by the blind end at U-shaped upper ledge 207 Compression spring 204 is set between bearing pin to determine the position of active pin shaft 205.Those skilled in the art It should be clear that the position determining active pin shaft in other ways can also be adopted, such as:

(1) stretching spring is set between fixed pin shaft 201 and active pin shaft, at this between 205 In the case of Zhong, it is contemplated that mutually stagger with the position of fixing nut 206, preferably at fixing nut 206 Both sides respectively arrange one stretching spring；

(2) commercially available bearing pin moving member is used, in this case, as long as at U-shaped upper ledge 207 The appropriate location of lower section offer installation gap, bearing pin moving member is arranged on this, it is achieved bearing pin is along U Axial flexible mobile of shape upper ledge, and its normal condition is near being provided with the one of fixed pin shaft 201 Side.

Its U-shaped profile of U-shaped lower frame 306, it is opening up is enclosed within below U-shaped upper ledge 207. Along the length direction of U-shaped lower frame 306, the first slot and the second slot are set.Wherein, first Slot is corresponding with the fixing pivot pin 201 of U-shaped upper ledge；Second slot and the shifting of U-shaped upper ledge Moving axis pin 205 is corresponding.Distance between first slot and the second slot is less than hold-open catch 201 dismount the distance of position with oval elongated hole far-end.

Refer to Fig. 5, in the present embodiment, the first slot and the second slot are respectively arranged at U-shaped The two ends, left and right of lower frame 306, wherein, the first slot is V-groove 306a, and the second draw-in groove is C Type groove 306b.

Hereinafter refer to Fig. 1, Fig. 2, Fig. 4, Fig. 5, lower frame body be will be further illustrated and the most quickly pacify Mounting or dismounting are unloaded, and are enclosed within outside U-shaped upper ledge 207 by the U-shaped lower frame 306 of lower frame body, U-shaped during installation C-shaped channel 306b of lower frame 306 is stuck on active pin shaft 205, pushes away before whole lower frame body, compression Spring 204 compresses, and active pin shaft 205 reach becomes big with the distance of fixed pin shaft, now rotates lower frame Body makes it not push framework front after fitting with upper frame body, under the elastic force effect of compression spring 204, U-shaped lower frame 306 is stuck between fixed pin shaft 201 and active pin shaft 205.When lower frame body dismantled by needs Time, only pushing framework before need, compression spring 204 is compressed, and active pin shaft 205 moves forward, under now inciting somebody to action Framework rotates down around active pin shaft 205 can take off lower frame body.

Referring to Fig. 5, Fig. 6, further illustrating swing rotating device, swing rotating device is solid Being scheduled on the lower section of U-shaped lower frame 306, including connecting shaft 307, its upper end has screw thread, by with Nut screw connection is fixed on below U-shaped lower frame 306；Roller bearing units 304, its inner ring is enclosed within connection The lower end of axle 307 is also fixed, its bearing block can swing relative to connecting shaft 307 any direction and Pivoting；Locking jackscrew 305, the counterbore in its alignment connecting shaft 307 is in order to be fastenedly connected axle 307 With roller bearing units 304.

In the present invention, the Main Function of swing rotating device is to make abrasive disc whole flat during grinding Can there be more contact area ground in face, because of the existence of this device, even if grinding on irregular ground Head oneself can adjust angle laminating ground under the effect of trowelling machine gravity；Simultaneously at ground friction resistance Everywhere during difference, bistrique can rotate around connecting shaft, it is to avoid causes device damage or cause abrasive disc same place Excessive wear and affect integral grinding effect.

Refer to Fig. 1, Fig. 2, Fig. 3, Fig. 5 and Fig. 6, grinding head assembly includes: nylon godet 301, Mill joint 302, abrasive disc 303.Wherein, 6 the most uniformly it are fixed with below nylon godet 301 Individual mill joint 302, abrasive disc 303 is bonded on mill joint 302 by the hair side hasp at the back side.

It will be apparent to those skilled in the art that employing nylon godet allows for its mechanical strength and weight Factor can improve efficiency.In addition to nylon material, it is also possible to use other materials to prepare and lead Dish.Further, in addition to hasp, abrasive disc 303 can also be adopted and be fixed in other ways on mill joint, Such as: clamping, crimping etc..

In the present embodiment, abrasive disc is uniformly distributed fixing by mill joint, and mill joint is upper and lower with nylon godet Between gap relatively big, grind in the groove that the powder produced will not accumulate in abrasive disc.

So far, the connection transfer device of the present embodiment trowelling machine and abrasive disc is introduced complete.

Another aspect of the present invention additionally provides a kind of grinding machinery.This grinding machinery includes: removal Trowelling machine after spatula, the connection transfer device in above-described embodiment and N number of abrasive disc.Refer to figure 1, the U-shaped upper ledge of connection transfer device is fixed on the hexagonal shaped steel 1 of trowelling machine by two bolts. The grinding head assembly of connection transfer device includes: nylon godet 301, and the most along the circumferential direction 6 the most fixing mill joints 302.6 abrasive discs 303 are taken button respectively by the hair side at the back side and are bonded at On corresponding mill joint 302.

Hereinafter the operation principle of the present embodiment grinding machinery is introduced on the whole.

When trowelling machine (removing the part after spatula) rotary motion, drive hexagonal shaped steel with floating Rotating centered by the axle of machine gearbox, hexangle type steel band moves the U-shaped upper ledge motion of connection, U-shaped upper ledge drives the U-shaped lower frame motion coupled, and U-shaped lower frame passes through axle, outside what drive coupled ushers to seat Spherical ball bearing and couple mill thereon and mill joint and abrasive disc do grinding motion, this is main Motion.

It should be noted that and drive roller bearing units at U-shaped lower frame 306 by connecting shaft 307 304 and nylon godet 301, mill joint 302, abrasive disc 303 motion while, roller bearing units 304 had both done axial wobble, did again around the rotation centered by coupling spindle.Microcosmic is interpreted as, works as mill During while meeting obstructions more than another side, will enclose pivoting, when ground injustice, mill can be with The fluctuating on ground and swing relative to axle, mill not only swings but also rotate.In this case, exist When ground is ground, even if out-of-flatness abrasive disc in ground also can be adjacent to ground in the whole face of self regulation, Because bistrique can rotate around connecting shaft, making all of abrasive disc degree of wear uniform, ground grinding effect is more preferable.

Additionally, form grinding machinery as a example by the trowelling machine that the present embodiment is after removing spatula, but thing In reality, if there being other parts to be capable of providing rotary power, i.e. provide a rotation bar, this turn Lever can be parallel to the rotation with in surface of to be ground, and connection transfer device is arranged on this rotation On bar, abrasive disc is fixed on the grinding head assembly of connection transfer device, it is possible to realize the present invention.Cause This, above-mentioned ROTATING SOURCE is not limited to the trowelling machine after removal spatula.

So far, the present embodiment grinding machinery is introduced complete.

So far, already in connection with accompanying drawing, the present embodiment has been described in detail.According to above description, this Connection transfer device of the present invention should have been had and clearly recognized by skilled person.

It should be noted that in accompanying drawing or description text, the implementation not illustrating or describing, It is form known to a person of ordinary skill in the art in art, is not described in detail.Additionally, The above-mentioned definition to each element and method is not limited in various concrete structures, the shape mentioned in embodiment Shape or mode, it can be changed or replace, such as by those of ordinary skill in the art simply:

(1) about between upper frame body and hexagonal shaped steel for the quantity of fixing bolt, can basis Needs are adjusted, as long as more than two；

(2) about grinding the number of joint on godet, can according to practical situation, as godet size, The power of trowelling machine etc. are adjusted flexibly, not limitation and six in above-described embodiment, generally More than two；

(3) nylon godet is not limited only to nylon material and processes, it is possible to be moulding or other works Journey materials processing forms；

(4) fixing nut 206 is not limited only to hex nut, can be blind nut or self-clinching nut, Or the relevant position tapping connection etc. at U-shaped lower frame 306.

Additionally, the direction term mentioned in embodiment, such as " on ", D score, "front", "rear", " left ", " right " etc., are only the directions with reference to accompanying drawing, are not used for limiting the scope of the invention.

In sum, after the spatula on trowelling machine is removed, by connection transfer device of the present invention, Trowelling machine can be used as grinder, be truly realized a tractor serves several purposes, cost-effective, further, This structure solves powder and easily blocks, and abrasive disc can not be fitted the problem on ground completely, have good should Use prospect.

Particular embodiments described above, is carried out the purpose of the present invention, technical scheme and beneficial effect Further describe, be it should be understood that the foregoing is only the present invention specific embodiment and , be not limited to the present invention, all within the spirit and principles in the present invention, that is done any repaiies Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (13)

1. a connection transfer device, it is characterised in that including:

Connect assembly；

Swing rotary assembly, its top is connected on described connection assembly；And

Grinding head assembly, swing rotary assembly is fixed on its top；

Wherein, under the effect of described swing rotary assembly, described grinding head assembly can realize planetary turn Move and sideshake.

Connection transfer device the most according to claim 1, it is characterised in that described bistrique group Part includes:

Godet, in the form of annular discs, it is fixed on described swing rotary assembly；

M mill joint (302), is the most uniformly fixed on the lower surface of described godet, abrasive disc It is fixed on corresponding mill joint, M >=2.

Connection transfer device the most according to claim 2, it is characterised in that described abrasive disc leads to Cross that hasp is bonding, the mode of clamping or crimping is fixed on corresponding mill joint.

Connection transfer device the most according to claim 1, it is characterised in that described swing is revolved Turn assembly to include:

Connecting shaft (307), its upper end is fixed on below described connection assembly；

Roller bearing units (304), its inner ring is enclosed within the lower end in addition of described connecting shaft (307) Fixing, its bearing block can rotate relative to described connecting shaft (307) and swing；

Locking jackscrew (305), it is directed at the counterbore in described connecting shaft (307), described with fastening Connecting shaft (307) and roller bearing units (304).

Connection transfer device the most according to claim 1, it is characterised in that described connection group Part includes: upper frame body and lower frame body；Wherein:

The open side of the U-shaped upper ledge (207) of described upper frame body is down；

U-shaped lower frame (306) open side of described lower frame body upward, is enclosed within described U-shaped upper ledge (207) On, described U-shaped lower frame (306) and described U-shaped upper ledge (207) use removably to connect.

Connection transfer device the most according to claim 5, it is characterised in that:

In described upper frame body, fixed pin shaft (201) is through the axle mouth of described U-shaped upper ledge the first end； Active pin shaft (205) through described U-shaped upper ledge the second end elongated hole and can in elongated hole slide anteroposterior, Under fastening state, described active pin shaft moves to elongated hole the position near fixed pin shaft；In dismounting Under state, described active pin shaft moves to elongated hole the position away from fixed pin shaft, without external force situation Under, described active pin shaft is in fastening state；

In described lower frame body, along the length direction of described U-shaped lower frame, the first slot and second is set Slot, the distance between the first slot and the second slot is less than hold-open catch 201 and described work The distance of the dismounting position of untie-sell axle；

Under fastening state, described fixing pivot pin (201) is sticked in described first slot；Described Mobile pivot pin (205) is sticked in described second slot, and it withstands described second slot to eliminate Fit clearance.

Connection transfer device the most according to claim 6, it is characterised in that:

First end seal of described U-shaped upper ledge is closed and leaves axis hole；

Described upper frame body also includes: central spindle of the spring (203) and compression spring (204), wherein, and institute Stating the central spindle of the spring (203) the length direction setting along described U-shaped upper ledge, its second end is fixed to institute Stating active pin shaft (205), the axis hole on the first end that its first end is closed by described U-shaped upper ledge passes； Described compression spring (204) is sheathed on described central spindle of the spring (203), its one end contact or fixing In the first end that U-shaped upper ledge is closed, other end contact or be fixed on described active pin shaft (205).

Connection transfer device the most according to claim 6, it is characterised in that described first card Conjunction groove and the second slot are respectively arranged at the two ends, left and right of described U-shaped lower frame, wherein, the first engaging Groove is V-groove (306a), and the second draw-in groove is C-shaped channel (306b).

Connection transfer device the most according to any one of claim 1 to 8, it is characterised in that Described connection assembly is fixed on after removal spatula on the rotation bar of trowelling machine, and along the side of described rotation bar To extension；

The rotary shaft of described trowelling machine is vertical with described rotation bar, and this rotary shaft is on to be ground It is projected as the first projection, being projected as of the connecting portion of described connection assembly and described swing rotary assembly Second projection, described first projection and the second projection are misaligned.

Connection transfer device the most according to claim 9, it is characterised in that:

Described connection assembly is after its second end is fixed on removal spatula on the rotation bar of trowelling machine；

The top of described swing rotary assembly is connected to described connection assembly away from the of described rotation bar One end.

11. connection transfer devices according to claim 9, it is characterised in that；

Described connection member is fixed with N number of fixing nut；

Described rotation bar is hexagonal shaped steel (1), it offers corresponding with described N number of fixing nut N number of fixing hole；

Wherein, N number of bolt from top to bottom through fixing hole, is spirally connected with fixing nut, with by described company Relay part is fixed on described rotation bar, N >=2.

12. 1 kinds of grinding machineries, it is characterised in that including:

ROTATING SOURCE, its offer one rotation bar, this rotation bar can be in the plane being parallel to be ground Rotate；

Connection transfer device according to any one of claim 1 to 11, it connects assembly and is fixed on In described ROTATING SOURCE；And

Abrasive disc, is fixed on the grinding head assembly of described connection transfer device.

13. grinding machineries according to claim 12, it is characterised in that described ROTATING SOURCE is Trowelling machine after removal spatula.