1. A seam widening device is characterized in that: the grinding machine comprises a shell (1), wherein the shell (1) is provided with a driving cavity (11), a transmission cavity (12), a grinding cavity (13) and a power supply cavity (14), a driving motor (2) is arranged in the driving cavity (11), a transmission assembly (3) is arranged in the transmission cavity (12), a grinding wheel (521) is rotatably arranged in the grinding cavity (13), the power supply cavity (14) is used for installing a battery to supply power for the driving motor (2), and a dust removing part (9) is further arranged in the grinding cavity (13); the rotating shaft of the driving motor (2) penetrates through the driving cavity (11) to the interior of the transmission cavity (12), a driven shaft (4) is further arranged in the transmission cavity (12), the driving assembly (3) transmits the power of the driving motor (2) to the driven shaft (4), and the driven shaft (4) penetrates through the transmission cavity (12) to the interior of the grinding cavity (13) to drive the grinding wheel (521) to rotate.

2. The seam expanding device according to claim 1, wherein: drive assembly (3) include first drive wheel (31), second final drive wheel (321) and second auxiliary drive wheel (322), be provided with action wheel (21) in the pivot of driving motor (2), be provided with first driven wheel (41) and second on driven shaft (4) and follow driving wheel (42), first drive wheel (31) will the power of action wheel (21) to first from driving wheel (41) transmission, simultaneously, second final drive wheel (321) with second auxiliary drive wheel (322) will the power of action wheel (21) to the second is followed driving wheel (42) transmission.

3. The seam expanding device according to claim 2, wherein: be provided with axis of rotation (5) in grinding chamber (13), axis of rotation (5) are including connecting portion (51), installation department (52), transmission portion (53), mounting hole (131) have been seted up to the lateral wall in grinding chamber (13), install installation piece (7) in mounting hole (131), connecting hole (71) have been seted up to installation piece (7), connecting portion (51) are located in connecting hole (71) and be connected in installation piece (7), installation department (52) are used for the installation emery wheel (521), transmission portion (53) are used for connecting driven shaft (4).

4. The seam expanding device according to claim 3, wherein: the mounting piece (7) is fixed in the mounting hole (131) through a screw, and the connecting part (51) penetrates through the connecting hole (71) and is rotatably connected to the mounting piece (7) through a bearing.

5. The seam expanding device according to claim 3, wherein: the connecting part (51) penetrates through the connecting hole (71) and is rotatably connected to the mounting piece (7) through a bearing, a fixing component (8) is arranged on the mounting piece (7), a mounting groove (72) is formed in the mounting piece (7), the fixing component (8) comprises a fixing insertion piece (81) and a compression spring (82), the fixing insertion piece (81) is arranged in the mounting groove (72), one end of the compression spring (82) abuts against the fixing insertion piece (81) and the other end of the compression spring abuts against the groove bottom of the mounting groove (72), a fixing slot (132) is formed in the inner wall of the mounting hole (131), and the fixing insertion piece (81) is in inserting fit with the fixing slot (132); still seted up on installation piece (7) and stepped down groove (73), stepped down groove (73) communicate in installation groove (72), be provided with in stepped down groove (73) and press piece (83), press piece (83) are fixed in fixed inserted sheet (81).

6. The seam expanding device according to claim 3, wherein: the mounting piece (7) is rotatably mounted in the mounting hole (131) through a bearing, the connecting part (51) is slidably arranged in the connecting hole (71), the connecting part (51) is provided with a supporting hole (511), a supporting piece (6) is mounted in the supporting hole (511), the supporting hole (511) comprises a threaded section (5111) and a supporting section (5112), the supporting piece (6) comprises a threaded part (61), a first supporting part (62), a transition part (63), a second supporting part (64) and a hand screwing part (65), and the threaded part (61) is in threaded fit with the threaded section (5111); the connecting portion (51) is further provided with an accommodating hole (512), the accommodating hole (512) is communicated with the abutting section (5112), a resisting block (5121) is installed in the accommodating hole (512), a resisting groove (74) is formed in the inner wall of the connecting hole (71), the resisting block (5121) is pressed by the second resisting portion (64) to be in inserted fit with the resisting groove (74), and the resisting block (5121) is separated from the resisting groove (74) when pressed by the first resisting portion (62).

7. The seam expanding device according to claim 1, wherein: a grid stopper (15) is arranged at the position, close to the grinding cavity (13), of the shell (1).

8. The seam expanding device according to claim 7, wherein: and a metal strip (151) is arranged on one side of the lattice piece (15) close to the grinding surface.

9. The seam expanding device according to claim 1, wherein: dust removal piece (9) are including the spray pipe, the spray pipe has into water interface and delivery port, it is used for connecting the inlet tube to intake the interface, the delivery port orientation emery wheel (521) contact surface of polishing's position.

10. A shear wall crack repairing process is characterized by comprising the following steps:

s1, crack pretreatment: grinding the crack by using the seam grinding device as claimed in claim 1 to expand each part of the crack to a size capable of being smeared with the filler and simultaneously removing dust in the crack;

s2, filling of filler: filling filler into the cracks;

s3, compacting the filler: compacting the filler in the crack to fill the crack with the filler;

s4, maintenance: curing the filler in the crack to enable the filler in the crack to be solidified stably so as to fill the crack;

s5, filling supplement: coating new filler on the solidified filler again and leveling;

s6, re-curing: and curing the new filler in the crack to ensure that the new filler is stably solidified to make up for the depression generated by solidification shrinkage of the filler which is applied for the first time.

Background

Shear walls (shear walls), also called as wind-resistant walls, earthquake-resistant walls or structural walls, are walls which mainly bear horizontal loads and vertical loads (gravity) caused by wind loads or earthquake action in houses or structures and prevent the structures from being sheared (sheared) and damaged. At present, in the construction process of buildings, cracks are sometimes generated after the shear wall is formed, and the cracks of the shear wall mainly comprise concrete shrinkage cracks, cracks caused by building shapes and cracks under the action of external force. In normal construction work, the shear wall is allowed to work with seams, but the crack of the shear wall is repaired when the owner sees the crack and feels a potential safety hazard. The common shear wall crack repair is only to smear filler at the crack, and the crack repair is finished after the crack is self-dried, the repair mode is rough, the repair effect is poor, the filler is easy to fall off, and the crack can be quickly shown.

In view of the above related technologies, the inventors consider that the repair of the shear wall crack has a defect that the repair effect is poor.

Disclosure of Invention

In order to improve the repair effect on the shear wall crack, the application provides a crack expanding device and a shear wall crack repair process applying the crack expanding device.

In a first aspect, the application provides a seam expanding device, which comprises a shell, wherein the shell is provided with a driving cavity, a transmission cavity, a grinding cavity and a power cavity, a driving motor is arranged in the driving cavity, a transmission assembly is arranged in the transmission cavity, a grinding wheel is rotatably arranged in the grinding cavity, the power cavity is used for installing a battery to supply power for the driving motor, and a dust removing piece is further arranged in the grinding cavity; the transmission assembly is characterized in that a rotating shaft of the driving motor penetrates through the driving cavity into the transmission cavity, a driven shaft is further arranged in the transmission cavity, the driving assembly transmits the power of the driving motor to the driven shaft, and the driven shaft penetrates through the transmission cavity into the polishing cavity to drive the grinding wheel to rotate.

By adopting the technical scheme, the rotating shaft of the motor rotates, the transmission assembly transmits the power of the rotating shaft of the motor to the driven shaft, the driven shaft drives the grinding wheel to rotate, a worker can hold the seam opening device by hand to open the seam, and meanwhile, the dust removal piece on the seam opening device can remove dust from the seam. When carrying out crack processing, handheld seam device of rubbing is in order to expand the processing to the crack, has higher treatment effeciency to the crack, removes dust to the crack simultaneously, further improves the treatment effeciency to the crack, and the crack is being repaired to the process control crack, and the filler is filled up the crack more easily and stronger with the bonding effect of crack, makes the cracked repair effect of shear force wall better from this.

Optionally, the transmission assembly comprises a first transmission wheel, a second main transmission wheel and a second auxiliary transmission wheel, a driving wheel is arranged on a rotating shaft of the driving motor, a first driven wheel and a second driven wheel are arranged on the driven shaft, the first transmission wheel transmits power of the driving wheel to the first driven wheel, and meanwhile, the second main transmission wheel transmits power of the driving wheel to the second driven wheel.

Through adopting above-mentioned technical scheme, first drive wheel transmits the power of driving motor pivot to the driven shaft, and second main drive wheel also transmits the power of motor pivot to the driven shaft with second auxiliary drive wheel simultaneously for holistic mechanical transmission effect is more stable, makes the rotation effect of driven shaft more stable, and then makes the rotation of emery wheel more stable.

Optionally, the intracavity of polishing is provided with the axis of rotation, the axis of rotation includes connecting portion, installation department, transmission portion, the mounting hole has been seted up to the lateral wall in chamber of polishing, install the installation piece in the mounting hole, the connecting hole has been seted up to the installation piece, connecting portion are located in the connecting hole and be connected in the installation piece, the installation department is used for the installation the emery wheel, transmission portion is used for connecting the driven shaft.

Through adopting above-mentioned technical scheme, the emery wheel is installed in the installation department, and transmission portion connects in from the driving wheel, drives axis of rotation synchronous rotation from the driving wheel, and then makes the installation department drive the emery wheel and rotate, and the rotation effect of emery wheel is stable.

Optionally, the mounting plate is fixed in the mounting hole through a screw, and the connecting portion passes through the connecting hole and is rotatably connected to the mounting plate through a bearing.

Through adopting above-mentioned technical scheme, the installation piece passes through the fix with screw in the mounting hole, and the mode of fix with screw is simple and convenient stable to it is convenient to dismantle, makes the installation of installation piece convenient with the dismantlement, and then makes the change of grinding miller convenient.

Optionally, the connecting portion penetrates through the connecting hole and is rotatably connected to the mounting piece through a bearing, a fixing assembly is arranged on the mounting piece, a mounting groove is formed in the mounting piece, the fixing assembly comprises a fixing insertion piece and a compression spring, the fixing insertion piece is arranged in the mounting groove, one end of the compression spring abuts against the fixing insertion piece, the other end of the compression spring abuts against the bottom of the mounting groove, a fixing slot is formed in the inner wall of the mounting hole, and the fixing insertion piece is in insertion fit with the fixing slot; the installation groove is provided with a stepping groove, the stepping groove is communicated with the installation groove, a pressing sheet is arranged in the stepping groove, and the pressing sheet is fixed on the fixed insertion sheet.

Through adopting above-mentioned technical scheme, fixed inserted sheet pegs graft the cooperation with fixed slot under compression spring's elasticity effect, make fixed subassembly be fixed in the mounting groove with the mounting plate steadily from this, when needs are changed the emery wheel, to the pressing plate application of force, make fixed inserted sheet break away from fixed slot, remove fixed subassembly from this to the fixed of mounting plate, and the same reason, when installing, to the pressing plate application of force, remove the pressure to the pressing plate after the mounting plate installation advances the mounting hole, the pressing plate inserts in fixed slot automatically under the elasticity of spring, fix the mounting plate with this, make the installation and the dismantlement of mounting plate simple, and then make the change of emery wheel simple and convenient.

Optionally, the mounting plate is rotatably mounted in the mounting hole through a bearing, the connecting portion is slidably disposed in the connecting hole, the connecting portion is provided with a supporting hole, a supporting piece is mounted in the supporting hole, the supporting hole includes a threaded section and a supporting section, the supporting piece includes a threaded section, a first supporting section, a transition section, a second supporting section and a hand-screwing section, and the threaded section is in threaded fit with the threaded section; the connecting part is further provided with an accommodating hole which is communicated with the abutting section, a supporting block is arranged in the accommodating hole, a supporting groove is formed in the inner wall of the connecting hole, the supporting block is abutted and pressed by the second abutting part and is in inserting fit with the supporting groove, and the supporting block is separated from the supporting groove when being abutted and pressed by the first abutting part.

By adopting the technical scheme, when the grinding wheel is installed, the abutting part is inserted into the abutting hole, the thread part is in thread fit with the thread section, the position of the abutting part in the abutting hole is stable, the abutting block is placed into the accommodating hole, the abutting block is pressed by the first abutting part, the abutting block is completely positioned in the accommodating hole or the abutting hole, the connecting part can slide in the connecting hole, namely, the grinding wheel can be installed or disassembled at the moment, after the grinding wheel is installed, the abutting part is rotated, the transition part exerts the abutting effect on the abutting block, the abutting block gradually enters the abutting groove, the abutting part continues to be rotated until the second abutting part exerts the abutting effect on the abutting block, and the installation piece is stably installed in the installation hole at the moment.

Optionally, a grating member is disposed at a position of the housing close to the grinding chamber.

Through adopting above-mentioned technical scheme, the check keep off the piece and polish the rubble that splashes to the emery wheel and carry out the check and keep off, play including the effect to the staff from this, improve the security when rubbing the seam device and using.

Optionally, a metal strip is arranged on one side of the grid blocking piece close to the polishing surface.

Through adopting above-mentioned technical scheme, when using to open up the seam device, the metal strip is contradicted in the surface of polishing, avoids the check to keep off the piece and directly contradicts in the surface of polishing, and metal surface roughness is lower for open up the removal effect of seam device and stabilize, improve the stability of opening up the seam work.

Optionally, the dust removal piece includes the spray pipe, the spray pipe has into water interface and delivery port, it is used for connecting the inlet tube to intake the interface, the delivery port orientation the position of emery wheel contact polished surface.

Through adopting above-mentioned technical scheme, the delivery port of spray pipe is towards the position of emery wheel contact face of polishing, and at the in-process of polishing to the crack, emery wheel surface water spray reduces emery wheel surface and crack surface temperature, reduces the production of dust and will remain the granule in the gap simultaneously and use water to wash out the gap, improves the treatment effect to the gap, does not need to carry out the granule again after spreading up the seam and gets rid of, has also reduced simultaneously and has waited the required time of crack surface cooling.

In a second aspect, the application provides a shear wall crack repairing process, which includes the following steps:

s1, crack pretreatment: polishing the crack by using the crack rubbing device so as to enable each part of the crack to be expanded to a size capable of being smeared with the filler, and removing dust in the crack;

s2, filling of filler: filling filler into the cracks;

s3, compacting the filler: compacting the filler in the crack to fill the crack with the filler;

s4, maintenance: curing the filler in the crack to enable the filler in the crack to be solidified stably so as to fill the crack;

s5, filling supplement: coating new filler on the solidified filler again and leveling;

s6, re-curing: and curing the new filler in the crack to ensure that the new filler is stably solidified to make up for the depression generated by solidification shrinkage of the filler which is applied for the first time.

By adopting the technical scheme, the crack expanding device is used for expanding and dedusting the crack, so that the crack is conveniently filled, the crack repairing efficiency is improved, the filling and the maintenance are carried out twice, and a better repairing effect is generated on the crack.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the cracks are treated, the crack expanding device is held by hands to expand the cracks, the treatment efficiency of the cracks is high, meanwhile, dust is removed from the cracks, the treatment efficiency of the cracks is further improved, and when the treated cracks are repaired, the processed cracks are more easily filled with fillers and have stronger bonding effect with the cracks, so that the repairing effect of the cracks of the shear wall is better;

2. the first driving wheel transmits the power of the driving motor rotating shaft to the driven shaft, and meanwhile, the second main driving wheel and the second auxiliary driving wheel also transmit the power of the motor rotating shaft to the driven shaft, so that the integral mechanical transmission effect is more stable, the rotation effect of the driven shaft is more stable, and the rotation of the grinding wheel is more stable;

3. check keep off the rubble that the piece was polished and is splashed to the emery wheel and carry out check and keep off, from this play including the effect to the staff, improve the security when rubbing the seam device and using to the metal strip is contradicted in the face of polishing, avoids check to keep off the piece and directly contradicts in the face of polishing, and metal surface roughness is lower, makes the removal effect of rubbing the seam device stable, improves the stability of rubbing the seam work.

Drawings

Fig. 1 is an overall structural view of embodiment 1 of the present application.

Fig. 2 is a partial cutaway view of embodiment 1 of the present application.

Fig. 3 is an exploded structural view of embodiment 1 of the present application.

Fig. 4 is an exploded structural view of embodiment 2 of the present application.

Fig. 5 is a partially cut-away view of the fixing assembly in embodiment 2 of the present application.

Fig. 6 is an overall structural view of embodiment 3 of the present application.

Fig. 7 is a view of a fitting structure of a rotating shaft and a butting member in embodiment 3 of the present application.

Fig. 8 is an overall structural view of embodiment 4 of the present application.

Description of reference numerals: 1. a housing; 11. a drive chamber; 12. a transmission cavity; 13. grinding the cavity; 131. mounting holes; 132. fixing the slot; 14. a power supply cavity; 15. a shelf; 151. a metal strip; 2. a drive motor; 21. a driving wheel; 3. a transmission assembly; 31. a first drive pulley; 321. a second main transmission wheel; 322. a second sub-transmission wheel; 4. a driven shaft; 41. a first driven wheel; 42. a second driven wheel; 43. a transmission slot; 5. a rotating shaft; 51. a connecting portion; 511. abutting the hole; 5111. a threaded segment; 5112. an abutment section; 512. a housing hole; 5121. a resisting block; 52. an installation part; 521. a grinding wheel; 53. a transmission section; 6. a resisting part; 61. a threaded portion; 62. a first butting part; 63. a transition section; 64. a second butting part; 65. a hand-wringing portion; 7. mounting a sheet; 71. connecting holes; 72. mounting grooves; 73. a yielding groove; 74. a butting groove; 8. A fixing assembly; 81. fixing the inserting sheet; 82. a compression spring; 83. pressing the sheet; 9. a dust removal member.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses open seam device, refer to fig. 1 and 2, including casing 1, be provided with drive chamber 11, transmission chamber 12, the chamber 13 and the power supply chamber 14 of polishing in the casing 1, be provided with driving motor 2 in the drive chamber 11, be provided with drive assembly 3 and driven shaft 4 in the transmission chamber 12, the intracavity of polishing 13 internal rotation is provided with emery wheel 521 and dust removal 9, installs the battery in the power supply chamber 14. The battery supplies power to the driving motor 2, the transmission assembly 3 transmits the power of the driving motor 2 to the driven shaft 4, and the driven shaft 4 drives the grinding wheel 521 to rotate.

Referring to fig. 2, the rotating shaft of the driving motor 2 penetrates through the driving cavity 11 to the transmission cavity 12, that is, the end of the rotating shaft of the driving motor 2 is located in the transmission cavity 12, a driving wheel 21 is fixedly arranged at the end of the rotating shaft of the driving motor 2, the driving wheel 21 is a bevel gear, and the driving wheel 21 and the rotating shaft of the driving motor 2 are coaxially arranged. The transmission assembly 3 comprises a first transmission wheel 31, a second main transmission wheel 321 and a second auxiliary transmission wheel 322, the first transmission wheel 31, the second main transmission wheel 321 and the second auxiliary transmission wheel 322 are both bevel gears, a rotating shaft is coaxially fixed on the first transmission wheel 31, the rotating shaft of the first transmission wheel 31 is rotatably connected to the inner wall of the transmission cavity 12, similarly, the second main transmission wheel 321 is also coaxially fixed with a rotating shaft, the second auxiliary transmission wheel 322 is also coaxially fixed with a rotating shaft, and the rotating shaft of the second main transmission wheel 321 and the rotating shaft of the second auxiliary transmission wheel 322 are rotatably connected to the same inner wall of the transmission cavity 12. The driven shaft 4 is arranged in the position far away from the driving motor 2 in the transmission cavity 12, and two ends of the driven shaft 4 are respectively connected to two side walls of the transmission cavity 12 in a rotating mode. A first driven wheel 41 and a second driven wheel 42 are coaxially and fixedly arranged on the driven shaft 4, the first driven wheel 41 and the second driven wheel 42 are both bevel gears, one side of the first driving wheel 31 is meshed with the driving wheel 21, and the other side of the first driving wheel 31 is meshed with the first driven wheel 41; one side of the second main transmission wheel 321 is meshed with the driving wheel 21, the other side of the second main transmission wheel 321 is meshed with the second auxiliary transmission wheel 322, and the other side of the second auxiliary transmission wheel 322 is meshed with the second driven wheel 42. The first driving wheel 31 transmits the power of the driving wheel 21 to the first driven wheel 41, and the second main driving wheel 321 and the second auxiliary driving wheel 322 transmit the power of the driving wheel 21 to the second driven wheel 42, so that the rotation effect of the driven shaft 4 is more stable.

Referring to fig. 2 and 3, driven shaft 4 is run through to polishing chamber 13 in by transmission chamber 12, is provided with axis of rotation 5 in polishing chamber 13, and the mounting hole 131 has been seted up to polishing chamber 13's chamber wall, is provided with installation piece 7 in the mounting hole 131, and axis of rotation 5 passes through the bearing and rotates to be connected in installation piece 7, and the one end of axis of rotation 5 is connected in driven shaft 4. Specifically, the rotating shaft 5 includes a connecting portion 51, an installation portion 52, and a transmission portion 53 in order from a portion connected to the installation piece 7 to a portion away from the installation piece 7, the connecting portion 51, the installation portion 52, and the transmission portion 53 are coaxially disposed, the connecting portion 51 is cylindrical, the installation portion 52 is square-column-shaped, and the transmission portion 53 is also square-column-shaped. The mounting piece 7 is provided with a connecting hole 71 at the middle part, and the connecting part 51 is rotatably arranged in the connecting hole 71 through a bearing. The grinding wheel 521 is provided with a square hole in the middle, the profile of the square hole is the same as that of the mounting portion 52, and the mounting portion 52 penetrates through the square hole in the middle of the grinding wheel 521 to mount the grinding wheel 521 on the mounting portion 52. The end part of the driven shaft 4 positioned in the grinding cavity 13 is provided with a transmission slot 43, the size of the outline of the transmission slot 43 at the end part of the driven shaft 4 is consistent with the size of the outline of the transmission part 53, and the transmission part 53 is inserted into the transmission slot 43 of the driven shaft 4. In this embodiment, it should be noted that the side length of the mounting portion 52 needs to be smaller than the diameter of the connecting portion 51, and the side length of the mounting portion 52 needs to be smaller than the diameter of the driven shaft 4, so that the grinding wheel 521 is limited by the connecting portion 51 and the driven shaft 4 on the mounting portion 52, the grinding wheel 521 is not easy to deviate, and the grinding effect of the grinding wheel 521 is more stable. In this embodiment, the mounting piece 7 is fixed to the mounting hole 131 by a screw, and when the grinding wheel 521 is removed, the screw is released, the mounting piece 7 is removed, the rotating shaft 5 is removed together with the mounting piece 7, the transmission portion 53 of the rotating shaft 5 is separated from the transmission slot 43 of the driven shaft 4, and at this time, the grinding wheel 521 can be removed from the rotating shaft 5. It should be noted that the length of the side of the transmission part 53 is smaller than that of the mounting part 52, so that the grinding wheel 521 can be detached from the mounting part 52.

Referring to fig. 1, the dust removing member 9 includes a water spraying pipe fixed to the housing 1, the water spraying pipe having a water inlet for connecting to a water inlet pipe and a water outlet facing a position where the grinding wheel 521 contacts the grinding surface. When the seam-widening device is used, a water tank and a water pump are prepared, the water pump preferably uses a small water pump or a miniature water pump so as to be convenient to carry, the water tank can be replaced by a container such as a basin or a bottle, a water suction pipe of the water pump is inserted into the container filled with water, a water supply pipe of the water pump is communicated to a water inlet of a water spray pipe, and when seam-widening is carried out, a water outlet of the water spray pipe continuously sprays water to the grinding wheel 521. In other embodiments, the dust removal member may also employ an exhaust tube coupled to a vacuum pump, the exhaust tube being oriented to draw dust and debris away from the location where the grinding wheel 521 contacts the sanding surface.

With continued reference to fig. 1, in order to improve the safety of the seam-rubbing device and reduce the impact of particles generated by the grinding wheel 521 on the worker during operation, the present embodiment further provides a grid 15 on the housing 1, the grid 15 is fixed to the housing 1, the grid 15 is made of an elastic material, and when the seam-rubbing operation is performed, the particles generated by grinding the grinding surface by the grinding wheel 521 will impact the grid 15, thereby reducing the possibility of the worker being impacted by the particles. Furthermore, in this embodiment, the metal strip 151 is disposed on the side of the lattice blocking member 15 close to the polishing surface, and when the seam-rubbing device is used, the metal strip 151 abuts against the polishing surface, so as to avoid the situation that the movement of the seam-rubbing device is affected by the direct abutting of the lattice blocking member 15 against the polishing surface, and improve the stability of the seam-rubbing operation.

The embodiment also discloses a shear wall crack repairing process, which comprises the following steps:

s1, crack pretreatment: polishing the crack by using the crack rubbing device so as to enable each part of the crack to be expanded to the size capable of being smeared with the filler, and removing dust in the crack;

s2, filling of filler: filling filler into the cracks;

s3, compacting the filler: compacting the filler in the crack to fill the crack with the filler;

s4, maintenance: curing the filler in the crack to enable the filler in the crack to be solidified stably so as to fill the crack;

s5, filling supplement: coating new filler on the solidified filler again and leveling;

s6, re-curing: and curing the new filler in the crack to ensure that the new filler is stably solidified to make up for the depression generated by solidification shrinkage of the filler which is applied for the first time.

Example 2

Example 2 differs from example 1 in that: referring to fig. 4 and 5, the mounting plate 7 is mounted in the mounting hole 131 by the fixing member 8. Installation piece 7 is long banding state, and the connecting portion 51 of axis of rotation 5 rotates to be connected in the middle part of installation piece 7, and the length direction's of installation piece 7 both sides are provided with mounting groove 72 respectively, are provided with fixed subassembly 8 in every mounting groove 72 respectively. The fixing component 8 comprises a compression spring 82 and a fixing insertion sheet 81, the fixing slidable insertion sheet is inserted into the mounting groove 72, the compression spring 82 is also arranged in the mounting groove 72, one end of the compression spring 82 abuts against the bottom of the mounting groove 72, and the other end of the compression spring abuts against the fixing insertion sheet 81. The inner wall of the mounting hole 131 is provided with a fixing slot 132, and the fixing slot 132 is matched with the fixing insertion piece 81 in an inserting manner. The mounting piece 7 is further provided with a yielding groove 73, and the yielding groove 73 is communicated with the mounting groove 72. The fixing insertion piece 81 is provided with a slot, the slot of the fixing insertion piece 81 is fixedly inserted with a pressing piece 83, the pressing piece 83 is positioned in the abdicating groove 73, one side of the pressing piece 83 far away from the fixing insertion piece 81 extends out of the abdicating groove 73, and in order to make the connection effect of the pressing piece 83 and the fixing insertion piece 81 more stable, the end side of the pressing piece 83 is fixed in the slot of the fixing insertion piece 81 through glue. When the mounting piece 7 is mounted in the mounting hole 131, the fixing insertion piece 81 is inserted into the fixing insertion groove 132 by the elastic force of the compression spring 82, thereby fixing the mounting piece 7 in the mounting hole 131 by the two sets of fixing members 8. When the grinding wheel 521 is removed, the two pressing pieces 83 are simultaneously pressed to separate the two fixing insertion pieces 81 from the corresponding fixing insertion grooves 132, respectively, thereby removing the mounting piece 7, the rotating shaft 5 is removed together with the mounting piece 7, the transmission portion 53 of the rotating shaft 5 is separated from the transmission insertion groove 43 of the driven shaft 4, and at this time, the grinding wheel 521 can be removed from the rotating shaft 5. In this embodiment, in order to make compression spring 82 stable to the elasticity effect of fixed inserted sheet 81, set up first stopper at the tank bottom of mounting groove 72 to set up the second stopper at the distolateral of fixed inserted sheet 81, first stopper equals and the position one-to-one with second stopper quantity, and compression spring 82 one end is cup jointed in first stopper and the other end and is cup jointed in the second stopper that corresponds, makes compression spring 82 be difficult for producing the skew from this.

Example 3

Example 3 differs from example 1 in that: referring to fig. 6 and 7, the mounting hole 131 is a circular hole, the mounting piece 7 is in a disk shape, and the mounting piece 7 is rotatably provided in the mounting hole 131 through a bearing. The connecting hole 71 is a square hole, the connecting portion 51 is a square column, and the connecting portion 51 is slidably inserted into the connecting hole 71. The connecting portion 51 is provided with a supporting hole 511 at one end away from the mounting portion 52, the connecting portion 51 is provided with accommodating holes 512 at the periphery, the accommodating holes 512 are communicated with the supporting hole 511, supporting blocks 5121 are accommodated in the accommodating holes 512, supporting grooves 74 are formed in the inner wall of the connecting hole 71, the number of the supporting grooves 74 is equal to that of the accommodating holes 512, the positions of the supporting grooves 74 are arranged in a one-to-one correspondence manner, supporting pieces 6 are arranged in the supporting holes 511, and the supporting pieces 6 press the supporting blocks 5121 into the supporting grooves 74, so that the connecting portion 51 is fixed in the connecting hole. Specifically, the abutting piece 6 comprises a threaded portion 61, a first abutting portion 62, a transition portion 63, a second abutting portion 64 and a hand screwing portion 65 which are fixedly connected in sequence, the threaded portion 61, the first abutting portion 62, the transition portion 63, the second abutting portion 64 and the hand screwing portion 65 are coaxially arranged, the hand screwing portion 65 is located outside the abutting hole 511, the outline of the hand screwing portion 65 is preferably larger than the outline of the abutting hole 511, and the hand screwing portion 65 can be provided with friction stripes on the peripheral side so as to have a good screwing effect. The first abutting portion 62 is cylindrical, the profile of the threaded portion 61 is smaller than or equal to the profile of the first abutting portion 62, in this embodiment, the profile of the threaded portion 61 is preferably equal to the profile of the first abutting portion 62, the second abutting portion 64 is cylindrical, the diameter of the second abutting portion 64 is larger than that of the first abutting portion 62, the transition portion 63 is circular truncated cone-shaped, the minimum diameter of the transition portion 63 is equal to that of the first abutting portion 62, and the maximum diameter of the transition portion 63 is equal to that of the second abutting portion 64. The abutting hole 511 comprises a threaded section 5111 and an abutting section 5112 which are arranged in sequence, and the threaded section 61 is inserted into the threaded section 5111 and is in threaded fit with the threaded section 5111. In this embodiment, the abutting block 5121 is preferably a spherical block, when the first abutting portion 62 abuts against the abutting block 5121, the abutting block 5121 is partially located in the abutting hole 511 and partially located in the accommodating hole 512, and at this time, the abutting block 5121 is separated from the abutting groove 74; when the second abutting portion 64 abuts against the abutting block 5121, the abutting block 5121 is partially located in the accommodating hole 512 and partially extends out of the accommodating hole 512, and the abutting block 5121 is inserted into the abutting groove 74. When the grinding wheel 521 is disassembled, the hand screwing portion 65 is screwed so that the threaded portion 61 gradually enters the abutting section 5112 from the threaded portion 5111, the first abutting portion 62 is far away from the accommodating hole 512, the abutting block 5121 is pressed by the transition portion 63 and gradually transits to the first abutting portion 62, the abutting block 5121 gradually enters the abutting section 5112 until the abutting block 5121 is separated from the abutting groove 74, at this time, the rotating shaft 5 can be disassembled, and the grinding wheel 521 can be disassembled from the rotating shaft 5.

Example 4

Example 4 differs from example 1 in that: referring to fig. 8, the grinding wheel 521 is provided with a grinding protrusion, which may be a protrusion of any shape, preferably a small conical protrusion, and is formed by the edge of the grinding wheel 521 when the crack is repaired, the grinding protrusion on the grinding wheel 521 continuously collides with the inner surface of the crack, and the inner surface of the crack is continuously hit to form a burr surface, so that the adhesive force of the filler on the burr surface is stronger when the repair is performed. In the present embodiment, a grip sleeve is further disposed outside the housing 1, and the grip sleeve is preferably an elastic sleeve body, and the grip sleeve covers the housing 1 and generates a contraction elastic force, specifically, the grip sleeve may be fixed to the housing 1 by its own contraction force, or may be fixed to the housing 1 by an adhesive manner. When the seam rubbing device is used, the holding sleeve enables a worker to hold the seam rubbing device more stably.

The implementation principle of the seam expanding device and the shear wall crack repairing process applying the seam expanding device in the embodiment of the application is as follows: firstly, the crack of the shear wall is widened to the size capable of being smeared with the filler, then the filler is smeared and maintained, and the filler is additionally smeared and maintained for one time, so that the crack of the shear wall is well filled. The seam-expanding device is used when a shear wall crack is widened, the produced dust can be removed while the seam is expanded, particles in the crack are removed, the overall crack treatment efficiency is improved, and when the treated crack is repaired, the filler is filled in the crack more easily and the bonding effect with the crack is stronger, so that the repairing effect of the shear wall crack is better.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.