Prefabricated building splicing seam grouting system and using method thereof

Abstract

A prefabricated building splicing seam grouting system comprises a grouting mechanism inserted into a splicing seam between two adjacent prefabricated wallboards, the grouting mechanism is connected to a winder through a driving rope so as to be capable of ascending and descending, the grouting mechanism comprises a grout outlet main body, and grouting sliding seats are movably inserted into the two ends of the grout outlet main body; according to the structure, rotating pressing rods are further symmetrically arranged at the positions, close to the end, of the mortar outlet body, and balancing weights are arranged and can drive the rotating pressing rods to rotate and abut against the driving baffles to move towards the middle of the mortar outlet body and abut against the prefabricated wall panel. And manual operation is avoided. Therefore, on the basis of the structure, the grouting sliding seat can be used as a shielding structure for shielding mortar, mortar filling is carried out synchronously, and in the process, lifting can be carried out through the winder, and uniform and regular grouting is achieved.

Description

Technical Field

[0001] This invention relates to the field of grouting system technology, specifically to a grouting system for prefabricated building joints and its application method. Background Technology

[0002] Precast walls are a new building option for existing detached houses. The construction process is simpler; after purchasing the required precast walls according to the architectural drawings, foam is injected into the joints between adjacent precast walls, and mortar is applied to the outside. With the improvement of precast wall manufacturing technology, existing precast walls can also directly add insulation layers and other structures. Therefore, the joint width becomes very large after splicing. If the conventional method of injecting foam on both sides is used, serious hollowing will occur in the middle. If mortar is injected directly into the joint using grouting equipment, the cavity is not sealed, so the mortar cannot be fully filled according to the actual needs, which easily leads to overflow. At the same time, it is difficult to guarantee the grout density and uniformity. Summary of the Invention

[0003] To address the aforementioned problem of the lack of dedicated grouting equipment for precast wall joints, this invention provides a grouting system for precast building joints.

[0004] The technical solution of this invention is as follows: A precast building splice joint grouting system includes a grouting mechanism inserted into the splice joint between two adjacent precast wall panels. The grouting mechanism is connected to a winding device via a drive rope. The winding device is detachably mounted on the two precast wall panels. The grouting mechanism includes a grouting body that is horizontally inserted into the splice joint and extends outward at both ends. The cross-section of the grouting body is a U-shape with the opening facing away from the winding device, and grouting slides are inserted at both ends of the grouting body. The grouting slides can move along the length direction of the grouting body. The grouting slide includes a baffle with a grouting pipe, the baffle is provided with grouting holes, and the opening direction of the grouting holes is parallel to the length direction of the grouting body. The baffle is perpendicular to the pulp outlet body and extends outward from the pulp outlet body in all directions. The width of the baffle is greater than the splice seam. An extension baffle is also provided on the side of the baffle away from the winding device. The slurry outlet body is also symmetrically provided with rotating pressure rods near its end. One end of the rotating pressure rod abuts against the baffle, and the other end is provided with a counterweight. The counterweight can drive the rotating pressure rod to rotate and abut against the baffle to move closer to the center of the slurry outlet body and abut against the precast wall panel.

[0005] After inserting the grouting body into the splice joint, the grouting slide can be used as a shielding structure to shield the mortar and fill it simultaneously. During this process, the retractor can be used to lift the grouting machine and achieve uniform and regular grouting. During the lifting process, the rotating pressure bar and counterweight can adapt to various precast walls and ensure that the grouting machine is pressed tightly against the wall and is more stable.

[0006] The structure of the above-mentioned slurry outlet body is as follows: a cut is provided in the middle of the slurry outlet body, the cut is symmetrical about the middle of the slurry outlet body, and the width decreases from both ends. The highest point of the cut of the slurry outlet body is higher than the grouting hole.

[0007] The winding device described above is configured such that two winding devices are symmetrically arranged on a horizontal support plate, and a guide rod is provided in the middle of the horizontal support plate. The guide rod is arranged parallel to the slurry discharge body and is guided by two symmetrical and vertical drive ropes.

[0008] In order to block the mortar and clean the wall surface, the upper end of the mortar outlet body is provided with a brush blade, and the brush blade extends outward from both sides of the mortar outlet body.

[0009] In order to change the state of the rotating pressure rod, an electric telescopic rod is provided at the end of the rotating pressure rod away from the baffle. A counterweight is provided at the output end of the electric telescopic rod, and the output ends of the electric telescopic rods at both ends of the pulp discharge body are connected by a tightening rope, which is located directly above the pulp discharge body.

[0010] To prevent equipment malfunctions, the length of the tightening rope is greater than the horizontal distance between the rotating shafts of the two rotating pressure rods.

[0011] The grouting hole is specifically designed such that the end of the grouting hole near the grouting pipe is a circular opening, and the other end is a vertical waist-shaped opening, with both openings being the same size.

[0012] To achieve automatic grouting, the extended baffle is made of elastic material and is normally vertical. A rangefinder is installed above the baffle, and the rangefinder is vertically downward without any obstruction.

[0013] The method for determining the grouting effect is that the rangefinder can be triggered by the outwardly bent extension baffle.

[0014] To ensure that grouting starts from the middle position, the grout outlets of the two baffles are arranged opposite each other, and the grout from the outlets can be sprayed at least to a position beyond the middle of the grout outlet body.

[0015] A method for using a precast building joint grouting system, comprising the above-mentioned precast building joint grouting system, and including the following steps: S1. Equipment installation: Place the grouting mechanism at the joint and place the winding device on the precast wall panel. S2. Grouting operation: Start the grouting machine and grout through the grouting body. At the same time, lift the grouting mechanism through the winding device. During this process, control the operation of the winding device by checking whether the reading of the rangefinder falls into the preset threshold.

[0016] The beneficial effects of this invention are as follows: This invention is a grouting system for prefabricated building splice joints. It is the first to achieve grouting within the splice joint by setting a grout outlet body. Unlike manual control, this device can complete the grouting operation through a preset grouting slide. While adapting to multiple prefabricated walls, it can also achieve contact and compaction with the wall during the grouting process, which can prevent mortar overflow during movement. Moreover, it can clamp and rise steadily with the wall. With the help of a rangefinder, it can achieve automatic grouting. Regardless of the specifications of the prefabricated wall or the size of the splice joint, it can automatically adapt and complete the grouting operation. Attached Figure Description

[0017] The solutions and advantages of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0018] In the attached diagram: Figure 1 This is a side view of the structure of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a schematic diagram of the application scenario structure of the present invention; Figure 4 This is a schematic diagram of the grouting mechanism structure in Embodiment 2 of the present invention (tightening rope in relaxed state). Figure 5 This is a schematic diagram of the grouting mechanism structure in Embodiment 2 of the present invention (tightening rope in tightened state). Figure 6 This is a schematic diagram of the grouting mechanism structure in Embodiment 3 of the present invention (extended baffle in normal state). Figure 7 This is a schematic diagram of the grouting mechanism structure in Embodiment 3 of the present invention (extended baffle under pressure). The components represented by the various reference numerals in the diagram are: 1. Precast wall panel; 11. Thickening layer; 2. Joint; 3. Grouting body; 31. Cut; 4. Grouting slide; 41. Baffle; 42. Grouting pipe; 43. Extension baffle; 44. Rangefinder; 5. Rotating pressure bar; 6. Counterweight; 61. Tightening rope; 7. Drive rope; 8. Guide rod; 9. Winding device; 100. Mortar. Detailed Implementation

[0019] Example 1 like Figure 1 , 2 The precast building splice joint grouting system shown includes a grouting mechanism inserted into the splice joint 2 between two adjacent precast wall panels 1, wherein, as Figure 3 As shown, when assembling precast wall panels 1 into a house space, two precast wall panels 1 cannot be completely fitted together, and the existence of splicing seam 2 is inevitable. It is located between the adjacent planes of the two precast wall panels 1, and its width corresponds to the width of the precast wall panel 1. Furthermore, the grouting mechanism is connected to the winding device 9 via the drive rope 7. The winding device 9 is detachably mounted on the two precast wall panels 1. The grouting mechanism can be lifted by winding the drive rope 7 around the winding device 9. The grouting mechanism can be automated by electric lifting, and it is more uniform and stable than manual lifting. This system can be used directly between two parallel precast wall panels 1. However, for two vertical precast wall panels 2, a thickening layer 11 needs to be set to provide a certain space for the equipment. The thickening layer 11 needs to be set directly on the surface of the precast wall panel 1 by workers using cement or the like, and its width needs to be the same as the precast wall 1.

[0020] Specifically, the grouting mechanism includes a grouting body 3 horizontally inserted into the splice joint 2 and extending outward at both ends. The grouting body 3 has a U-shaped cross-section with the opening facing away from the winding device 9. The width of the grouting body 3 is generally 10mm, and the material wall thickness is generally 1mm. Therefore, there is an 8mm width for mortar filling, which is compatible with existing 8mm grouting pipes. Grouting slides 4 are inserted at both ends of the grouting body 3. The grouting slides 4 can move along the length of the grouting body 3. Through this movement, it can be adapted to use with precast wall panels 1 of various width specifications.

[0021] First, the grouting slide 4 includes a baffle 41 with a grouting pipe 42 connected to an external grouting device. Specifically, the baffle 41 is provided with grouting holes, and the opening direction of the grouting holes is parallel to the length direction of the grouting body 3. The grouting holes are specifically designed such that the end of the grouting hole near the grouting pipe 42 is a circular opening for fitting the grouting pipe, while the other end is a vertical waist-shaped opening. The two openings are the same size. The waist-shaped opening design can improve the grouting effect. In order to ensure that grouting starts from the middle position, the grouting holes of the two baffles 41 are arranged opposite each other, and the mortar 100 of the grouting holes can be sprayed to at least a position beyond the middle of the grouting body 3. Therefore, the mortar can be injected into the middle position through the two grouting holes under high pressure, so as to solve the problem of gaps in the middle caused by adding mortar on both sides in the conventional way. In addition, the two oppositely arranged grouting holes can cancel each other out during the injection process and diffuse from the middle position to the surrounding area to achieve the diffusion of mortar.

[0022] Furthermore, to prevent the grout from failing to fill the joints on both sides, the structure of the aforementioned grout outlet body 3 is as follows: a cut 31 is provided in the middle of the grout outlet body 3. The cut 31 is symmetrical about the middle of the grout outlet body 3, located at the middle mortar diffusion position, and its width decreases gradually towards both ends. The highest point of the cut 31 of the grout outlet body 3 is higher than the grouting hole, therefore... Figure 1 As shown, after the grouting operation is started, the mortar sprayed into the grouting hole will diffuse in the middle position. During the diffusion process, it can diffuse to both sides of the cut 31 to balance the downward diffusion effect, thereby achieving diffusion and filling of the entire splice 2 in the circumferential area. With the middle as the main diffusion point of the mortar, the filling process of the mortar will be more uniform, and the phenomenon of mortar being too concentrated on one side due to the injection pressure will not occur.

[0023] Meanwhile, as a second function of the grouting slide 4, it can, while injecting grout, block overflowing grout by setting the baffle 41 perpendicular to the grout outlet body 3 and extending outwards circumferentially relative to the grout outlet body 3. Furthermore, the width of the baffle 41 is greater than the joint 2, therefore... Figure 2 As shown, during the grouting process, the current position of the grouting mechanism can be blocked by the baffle 41. During the grouting process, the mortar will be restricted by the baffle and thus grouting will be achieved in a limited space. Furthermore, an extension baffle 43 is provided on the side of the baffle 41 away from the winding device 9. By setting extension baffles 43 of different lengths, the size of the cavity can be changed according to the requirements.

[0024] Finally, since the thickness of the precast wall panel 1 is uncertain, but the equipment must be compatible with each model, the grouting body 3 is symmetrically equipped with rotating pressure rods 5 near its end. One end of the rotating pressure rod 5 abuts against the baffle 41, and the other end is equipped with a counterweight 6. Under the action of gravity, the counterweight 6 can drive the rotating pressure rod 5 to rotate, and the counterweight 6 can drive the rotating pressure rod 5 to rotate and abut against the baffle 41 to move closer to the center of the grouting body 3 and abut against the precast wall panel 1. After abutting, it can push the current grouting slide 4 to move closer to the center of the grouting body 3. After moving, the counterweight 6 can continue to play a role, so as to achieve tight contact between the grouting slide 4 and the precast wall panel, making the movement more stable and preventing shaking.

[0025] Furthermore, the winding device 9 is configured such that two winding devices 9 are symmetrically arranged on the horizontal support plate, and a guide rod 8 is arranged in the middle of the horizontal support plate. The guide rod 8 is arranged parallel to the slurry discharge body 3 and is guided by two symmetrical and vertical drive ropes 7. When in use, it is only necessary to place the horizontal support plate on the precast wall panel 1, and then align the guide rod 8 with the splice seam 2.

[0026] Since the main body 3 is narrower than the joint 2, in order to block the mortar 100 and clean the wall surface, the upper end of the main body 3 is provided with a brush blade, which extends outward from both sides of the main body 3. While cleaning the grouting wall surface with the brush blade, the dense bristles can also block the mortar and prevent excessive overflow of mortar from the top.

[0027] The above structure enables the grouting body 3 to be inserted into the splice joint 2, and the grouting slide 4 to act as a shielding structure to shield the mortar 100 and simultaneously fill the mortar 100. During this process, the winding device 9 can be used to lift the mortar and achieve uniform and regular grouting. During the lifting process, the rotating pressure rod 5 and counterweight 6 can be used to adapt to various precast walls. During the lifting process, the mortar can be pressed tightly against the wall and made more stable. The grouting method is also more compact than the manual method of adding mortar from both sides. The circumferential diffusion with the middle position as the diffusion point can also ensure that the mortar will finally overflow from both sides.

[0028] Example 2 like Figure 4 , 5As shown, based on the structure of Embodiment 1, in order to solve the problem of the clamping of the grouting slide 4 with the wall affecting the falling of the equipment, in order to ensure that the grouting mechanism can be placed directly downward from above the splice seam 2 and fall to the lowest position before the grouting operation begins, the following design is also required: In order to change the state of the rotating pressure rod 5, an electric telescopic rod is set at the end of the rotating pressure rod 5 away from the baffle 41. The output end of the electric telescopic rod is equipped with a counterweight 6, and the output ends of the electric telescopic rods at both ends of the grouting body 3 are connected by a tightening rope 61. The tightening rope 61 is located directly above the grouting body 3. The length of the tightening rope 61 is constant. Therefore, during the extension of the electric telescopic rod, it will rotate. The original state of contact with the baffle 41 will change with the extension of the electric telescopic rod. This can prevent the structure from clamping with the precast wall panel 1 during the falling process and being unable to fall normally. By changing the state in the above way, the falling process can be ensured to be smooth. The presence of the counterweight 6 can ensure that the falling is normal until the lowest point is reached, and then the extension state of the electric telescopic rod can be changed.

[0029] In the above structure, in order to avoid equipment malfunction, the length of the tightening rope 61 is greater than the horizontal distance between the rotating shafts of the two rotating pressure rods 5, so as to ensure that the tightening rope 61 can only play a role when it is necessary to change the pressing state with the precast wall panel 1, and will not affect the normal use of the equipment under other circumstances.

[0030] Example 3 Based on Embodiment 1, in order to achieve automatic grouting, the extended baffle 43 is made of elastic material and is normally vertical. A rangefinder 44 is set above the baffle 41, and the rangefinder 44 is set vertically downward without any obstruction. Due to the excessive amount of mortar injected, overflow may occur. Although the baffle 41 will not be pushed because it is pressed and tightened by the rotating pressure rod 5, the extended baffle 43 below it will be pushed and bent by the mortar 100. After bending, it will appear on the projection path of the rangefinder 44. Based on this, the method for judging the grouting effect is that the rangefinder 44 can be triggered by the outwardly bent extended baffle 43. That is, when the projection path of the rangefinder 44 is triggered by the bent extended baffle 43, the aforementioned winding device 9 pulls the grouting mechanism upward. After moving upward, the extended baffle 43 resets under the action of elasticity, and continues to bend and rise again during the continuous filling of mortar 100 until the operation is completed.

[0031] A method for using a precast building joint grouting system, comprising the above-mentioned precast building joint grouting system, and including the following steps: S1. Equipment installation: Place the grouting mechanism at the splice joint 2 and place the winding device on the precast wall panel 1. In the above process, the horizontal tray can be placed directly on the precast wall panels 1 on both sides of the splice joint 2. Then, by extending the electric telescopic rod, the grouting slide 4 and the precast wall panel 1 can be prevented from being pressed tightly together. Finally, the drive rope 7 is unwound by the rewinder 9 until the grouting mechanism reaches the lowest point.

[0032] S2. Grouting operation: Start the grouting machine and grout through the grouting body. At the same time, lift the grouting mechanism through the retractor 9. During this process, control the operation of the retractor by checking whether the reading of the rangefinder 44 falls into the preset threshold. Specifically, after the grouting mechanism reaches the lowest point, retract the electric telescopic rod until the counterweight 6 drives the rotating pressure rod 5 by gravity to push the baffle 41 to press tightly against the precast wall panel 1. Then start the grouting machine to grout. After the mortar is injected into the splice joint 2 until it overflows and pushes the extension baffle 43 to bend and fall into the projection direction of the rangefinder 44, the retractor 9 operates and lifts the grouting body 3 until there are no obstructions (excluding the ground) in the projection direction of the rangefinder 4. Then stop repeating the above actions until the mortar filling of the entire splice joint 2 is completed.

Claims

1. A precast construction joint grout system, characterized by, The grouting mechanism is connected to the winding device through the driving rope, and the winding device is detachably arranged on the two prefabricated wallboards; The grouting mechanism comprises a grouting body horizontally inserted into the joint and extended at both ends, the cross section of the grouting body is U-shaped with the opening facing away from the winding device, and grouting slides are inserted at both ends of the grouting body, the grouting slides can move along the length direction of the grouting body; The grouting slide comprises a baffle provided with a grouting pipe, the baffle is provided with a grouting hole, and the opening direction of the grouting hole is parallel to the length direction of the grouting body; The baffle is perpendicular to the grouting body and circumferentially extends outward relative to the grouting body, and the width of the baffle is greater than the joint, and the side of the baffle away from the winding device is further provided with an extension baffle; The grouting body is further provided with a rotating pressure rod at a position close to the end, one end of the rotating pressure rod abuts against the baffle, and the other end is provided with a counterweight, and the counterweight can drive the rotating pressure rod to rotate and abut against the baffle to move towards the middle part of the grouting body and abut against the prefabricated wallboard.

2. A precast construction joint grout system according to claim 1, wherein, The middle part of the grouting body is provided with a cutout, the cutout is symmetrical about the middle part of the grouting body, and the width gradually decreases towards both ends, and the highest point of the cutout of the grouting body is higher than the grouting hole.

3. A precast construction joint grout system according to claim 1, wherein, The winding device is symmetrically provided with two on the horizontal supporting plate, and the middle part of the horizontal supporting plate is provided with a guide rod, the guide rod is parallel to the grouting body and is penetrated and guided by two symmetric and vertical driving ropes.

4. A precast construction joint grout system according to claim 1, wherein, The upper end of the grouting body is provided with a bristle piece, and the bristle piece extends outward from both sides of the grouting body.

5. A precast construction joint grout system according to claim 1, wherein, The end of the rotating pressure rod away from the baffle is provided with an electric telescopic rod, the output end of the electric telescopic rod is provided with a counterweight, and the output ends of the electric telescopic rods at both ends of the grouting body are connected by a tightening rope, and the tightening rope is located directly above the grouting body.

6. A precast construction joint grout system according to claim 5, wherein, The length of the tightening rope is greater than the horizontal distance between the rotating shafts of the two rotating pressure rods.

7. A precast construction joint grout system according to claim 2, wherein, The end of the grouting hole close to the grouting pipe is a circular opening, the other end is a vertical waist-shaped opening, and the sizes of the two openings are the same.

8. A precast construction joint grout system according to any one of claims 1 to 7, wherein, The extension baffle is made of elastic material and is in a vertical state in normal state, a distance measuring instrument is arranged above the baffle, and the distance measuring instrument is vertically arranged downward without any shielding object.

9. A precast construction joint grout system according to any one of claims 8, wherein, The grouting holes of the two baffles are oppositely arranged, and the mortar of the grouting holes can be sprayed to a position beyond the middle part of the grouting body.

10. A method of using a precast construction joint grout system, characterized by, The prefabricated building joint grouting system of claim 8 is used, and comprises the following steps: S1, equipment installation, the grouting mechanism is arranged at the joint, and the winding device is arranged on the prefabricated wallboard; S2, grouting operation, the grouting machine is started, grouting is performed through the grouting body, at the same time, the winding device is used to lift the grouting mechanism, in this process, whether the reading of the distance measuring instrument falls within the preset threshold value controls the operation of the winding device.

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