A special curing device for prefabricated building prefabricated stair mold and a using method thereof

Abstract

The application relates to a special curing equipment for prefabricated building prefabricated stair mould and a use method; compared with large equipment in the prior art, the device is small in size, low in production cost, convenient to use, strong in universality and high in maneuverability; compared with a traditional handheld polishing equipment cleaning device, the device provides multiple gears, is designed according to the structure of the stair mould, can be quickly switched during cleaning and polishing of the internal corner and the external corner, does not need workers to change the cleaning angle multiple times, makes the cleaning process more efficient, significantly reduces the labor intensity of the workers in the whole process, and obviously improves the cleaning quality; the device retains the economical advantages of the manual equipment and also has the high efficiency of the large equipment.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building component maintenance, and in particular to a special maintenance equipment and method for prefabricated stair molds for prefabricated buildings. Background Technology

[0002] Prefabricated construction is a construction method in which building components are prefabricated and then transported to the construction site for assembly. Compared with traditional construction methods, prefabricated construction has advantages such as shorter construction cycle and higher environmental protection. Prefabricated stairs are an important component of prefabricated construction. Prefabricated stairs are produced in factories using steel molds. Before use, the molds need to be cleaned to ensure the smoothness of the mold surface, which is essential to guarantee the quality of the prefabricated stairs and facilitate demolding. As is well known, stairs have specific shapes, so the molds used to produce prefabricated stairs must complement the appearance of the stairs. Therefore, the prefabricated stair mold contains multiple mutually perpendicular narrow strip structural surfaces and the internal and external corners formed between these structural surfaces. The unique structure of this mold means that traditional mechanized mold cleaning equipment cannot be directly applied to the cleaning work of this mold.

[0003] Therefore, the current cleaning of precast stair formwork still relies on the traditional method of hand-held electric brush wheels. Because the stair structure surfaces within the formwork are numerous and have consistent angles, workers operating the brush wheels need to frequently switch between adjacent vertical surfaces. Furthermore, the electric brush wheels generally fail to thoroughly clean the corners and edges. Since the support point is entirely borne by the worker, the instability of the support point and the disordered movement trajectory contribute to the incomplete cleaning. Moreover, the workers expend a great deal of physical strength constantly applying pressure while holding the electric brush wheels, resulting in low labor intensity and efficiency throughout the cleaning process.

[0004] The existing technology includes a patent application with application number 202011294547.9 entitled "A Staircase Mold Processing Equipment". This equipment is designed with custom-shaped roller brushes according to the characteristics of the internal structural surface of precast stairs. The roller brushes fit and adapt to the internal structural surface of the precast stairs template to clean the mold. This equipment can greatly improve cleaning efficiency. However, the equipment is also bulky, has high production costs, requires custom-shaped roller brushes to be made according to different sizes of stairs molds, and has poor versatility and mobility. The production and maintenance costs of the equipment make it difficult to promote.

[0005] Therefore, the current urgent need for stair formwork cleaning equipment is to provide a new type of equipment and method that workers can easily hold and operate, without significantly increasing the cost of cleaning equipment, based on the existing manual handheld equipment. This would improve the efficiency of stair formwork cleaning and is relatively easy to promote and implement. Summary of the Invention

[0006] In view of the above situation and to overcome the defects of the prior art, the present invention provides a special maintenance equipment and method for prefabricated stair molds for prefabricated buildings, which effectively improves the shortcomings and defects of the prior art.

[0007] The technical solution to the problem includes a T-shaped handle, with an L-shaped rod that can slide left and right inserted into each of the two upper ends of the T-shaped handle. The two L-shaped rods are symmetrical. A disc is rotatably mounted on the upper end of each L-shaped rod via a pivot. The two discs are fixedly connected by a telescopic rod. The telescopic rod includes a sleeve, with a smooth rod slidably mounted at each end of the sleeve. The ends of the smooth rods are fixed to the discs on the corresponding sides. The sleeve and the smooth rods in the telescopic rod cannot rotate relative to each other. Multiple supports are evenly distributed around the circumference of the outer edge of each disc, and each support has a support. The support rod is hinged to the bracket at its middle position. The bracket has a fixed pulley located below the support rod. Each support rod has a steel wire rope fixed to its hinge axis. The free end of the steel wire rope passes over the fixed pulley and is fixed to the sleeve. When the two discs move away from each other, the inner end of the support rod swings away from the axis of the telescopic rod under the driving action of the steel wire rope. The hinge axis of the support rod is equipped with a coil spring that makes its inner end move closer to the axis of the telescopic rod to reset. The number of support rods on the left and right discs is the same and they are staggered and interlocked. Each support rod has a brush on its outer end face.

[0008] To drive the L-shaped rod, each of the two upper ends of the T-shaped handle is provided with a rectangular blind hole for inserting the L-shaped rod. The cross-section of the L-shaped rod corresponds to the rectangular blind hole. A sleeve is fitted onto the lower end of the T-shaped handle. A first hinge lug is provided on each of the left and right sides of the sleeve. A second hinge lug is fixed at the lower end of each L-shaped rod. The first hinge lug and the second hinge lug are hinged together by an inclined connecting rod.

[0009] To facilitate the limiting of the sleeve, the T-shaped handle is provided with a slide rail, and the two ends of the slide rail are provided with blocks. The sleeve is provided with a slide groove that cooperates with the slide rail, and the blocks limit the sliding distance of the sleeve.

[0010] To drive the two discs, a first bevel gear is fixed on the rotating shaft, and a second bevel gear, driven by a motor and meshing with the first bevel gear, is fixed on the L-shaped rod.

[0011] For ease of gripping, the lower end of the T-shaped handle and the sleeve are fitted with anti-slip rubber sleeves.

[0012] In order to prevent relative sliding between the sleeve and the smooth rod in the telescopic rod, the sleeve is a hollow tube with a square cross-section, and the smooth rod is a solid rod with a square cross-section. The sleeve and the smooth rod are slidably fitted together and cannot be separated from each other.

[0013] To facilitate locking the sleeve in different positions, a limiting pin is provided on the sleeve. Pressing the limiting pin will cause the sleeve to be at the upper limit of the T-shaped handle.

[0014] The method of using a special curing equipment for prefabricated staircase molds in prefabricated buildings includes the following steps:

[0015] Step 1: Check the equipment. Before use, check the integrity of the equipment and connect the power supply.

[0016] Step 2: Select the gear position. The sleeve has three gear positions on the T-shaped handle: cleaning external corner, cleaning internal corner, and cleaning flat surface. Drive the sleeve to slide on the T-shaped handle to different gear positions according to the position of the mold to be cleaned, and press the limit pin to limit the sleeve at that position to achieve gear selection.

[0017] Step 3: Select the feed angle for cleaning based on the cleaning position: When the two discs are driven to rotate by the motor at different gears, multiple brushes arranged at intervals form a rotating body during the high-speed rotation. This rotating body forms a brush roller. When cleaning the external corner gear, the inner end of the support rod moves closer to the axis of the rotating shaft. At this time, the rotating body formed is a brush roller that is thinner in the middle and thicker at both ends. The feed method is to feed along the angle bisector of the external corner so that the brush surface of the brush roller is in contact with the external corner. When cleaning the internal corner gear, the outer end of the support rod moves closer to the axis of the rotating shaft. At this time, the rotating body formed is a brush roller that is thicker in the middle and thinner at both ends. The feed method is to feed along the angle bisector of the internal corner so that the brush surface of the brush roller is in contact with the internal corner. When cleaning the flat surface gear, the support rod is parallel to the rotating shaft. At this time, a cylindrical rotating brush roller is formed. The brush roller can directly contact the part to be cleaned.

[0018] Step 4: Sequential cleaning. Since the switching between cleaning the inside corner and cleaning the outside corner is convenient, the cleaning of the staircase structure can be carried out directly in sequence without the need for staggered or alternating cleaning. The process of cleaning the inside and outside corners can completely cover the staircase mold structure. The brush roller, which forms a rotating body, only needs to move up and down along the inside or outside corner to polish the mold staircase structure.

[0019] Step 5: Tool recovery. After cleaning, turn off the motor and clean and maintain the brush.

[0020] Compared with existing large-scale equipment, this device is small in size, low in production cost, easy to use, highly versatile, and highly mobile. Compared with traditional handheld abrasive cleaning equipment, this device offers multiple speed settings. Designed specifically for stair mold structures, it allows for quick switching between cleaning and polishing inside and outside corners, eliminating the need for workers to change cleaning angles multiple times. This makes the cleaning process more efficient, significantly reduces the labor intensity of workers, and noticeably improves the cleaning quality. This device retains the economic advantages of manual equipment while also possessing the high efficiency of large-scale equipment. Attached Figure Description

[0021] Figure 1 This is a front-view three-dimensional view of the device during the cleaning of the external corners of the present invention.

[0022] Figure 2 This is a front-view three-dimensional view of the device during the cleaning of the inside corners of the present invention.

[0023] Figure 3 This is a left view of the device during planar structure cleaning according to the present invention.

[0024] Figure 4 This is a diagram showing the state of the device of the present invention cleaning the inside and outside corners inside the mold. Implementation

[0025] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Depend on Figures 1 to 4It is known that a special maintenance device for prefabricated staircase molds in prefabricated buildings includes a T-shaped handle 1. Each of the two upper ends of the T-shaped handle 1 has an L-shaped rod 2 that can slide left and right. To drive the L-shaped rod 2, each of the two upper ends of the T-shaped handle 1 has a rectangular blind hole for inserting the L-shaped rod 2. The cross-section of the L-shaped rod 2 corresponds to the rectangular blind hole. A sleeve 13 is fitted onto the lower end of the T-shaped handle 1. A first hinge lug is provided on each of the left and right sides of the sleeve 13. A second hinge lug is fixed to the lower end of each L-shaped rod 2. The first hinge lug and the second hinge lug are hinged together by an inclined connecting rod 14. To facilitate the limiting of the sleeve 13, the T-shaped handle... The sleeve 13 is equipped with a slide rail, with stops 15 at both ends. A groove 13 is provided to mate with the slide rail. For ease of gripping, anti-slip rubber sleeves 16 are fitted onto the lower end of the Y-shaped handle and the sleeve 13. The stops 15 limit the sliding distance of the sleeve 13. To facilitate locking the sleeve 13 at different positions, a limiting pin 17 is provided on the sleeve 13. Pressing the limiting pin 17 causes the sleeve 13 to be locked at the upper limit of the T-shaped handle 1. Two L-shaped rods 2 are symmetrically arranged. A disc 4 is mounted on the upper end of each L-shaped rod 2 via a rotating shaft 3. To drive the two discs 4, a first bevel gear is fixed on the rotating shaft 3. A motor-driven... A second bevel gear that moves and meshes with the first bevel gear is fixedly connected to the two disks 4 via a telescopic rod. The telescopic rod includes a sleeve 5, with a smooth rod 6 slidably mounted at each end of the sleeve 5. The ends of the smooth rods 6 are fixed to the corresponding disks 4. The sleeve 5 and the smooth rods 6 in the telescopic rod cannot rotate relative to each other. To prevent relative sliding between the sleeve 5 and the smooth rods 6, the sleeve 5 is a hollow tube with a square cross-section, and the smooth rod 6 is a solid rod with a square cross-section. The sleeve 5 and the smooth rod 6 are slidably fitted together and cannot detach from each other. Multiple supports 7 are evenly distributed around the circumference of the outer edge of each disk 4, and each support 7 is equipped with a... Each support rod 8 is hinged to a bracket 7 at its middle position. The bracket 7 has a fixed pulley 9 located below the support rod 8. Each support rod 8 has a steel wire rope 10 fixed on its hinge axis. The free end of the steel wire rope 10 passes around the fixed pulley 9 and is fixed to the sleeve 5. When the two discs 4 move away from each other, the inner end of the support rod 8 swings away from the axis of the telescopic rod under the driving action of the steel wire rope 10. The hinge axis of the support rod 8 is provided with a coil spring 11 to make its inner end move closer to the axis of the telescopic rod and reset. The number of support rods 8 on the left and right discs 4 is the same and they are staggered and interlocked. Each support rod 8 has a brush 12 on its outer end face.

[0027] The method of using a special curing equipment for prefabricated staircase molds in prefabricated buildings includes the following steps:

[0028] Step 1: Check the equipment. Before use, check the integrity of the equipment and connect the power supply.

[0029] Step 2: Select the gear position. The sleeve 13 has three gear positions on the T-shaped handle 1, namely the cleaning of the external corner, the cleaning of the internal corner, and the cleaning of the flat surface. Drive the sleeve 13 to slide on the T-shaped handle 1 to different gear positions according to the position of the mold to be cleaned, and limit the sleeve 13 to the position by pressing the limit pin 17 to achieve gear selection.

[0030] Step 3: Select the feed angle during cleaning according to the cleaning position: When the two discs 4 are driven to rotate by the motor at different gears, the multiple spaced brushes 12 form a rotating body during the high-speed rotation. This rotating body forms the brush 12 rollers. When cleaning the external corner gear, the inner end of the support rod 8 moves closer to the axis of the rotating shaft 3. At this time, the rotating body formed is the brush 12 roller, which is thin in the middle and thick at both ends. The feed method adopts the angle bisector of the external corner, so that the brush 12 rollers are fed along the angle bisector. The brush 12 surfaces are in contact with the external corner. When cleaning the internal corner, the outer end of the support rod 8 moves closer to the axis of the rotating shaft 3. At this time, the rotating body formed is a brush 12 roller that is thick in the middle and thin at both ends. The feeding method adopts the angle bisector of the internal corner so that the brush 12 surfaces of the brush 12 roller are in contact with the internal corner. When cleaning the flat surface, the support rod 8 is parallel to the rotating shaft 3. At this time, the rotating body is a cylindrical brush 12 roller. The brush 12 roller can directly contact the part to be cleaned.

[0031] Step 4: Sequential cleaning. Since the switching between cleaning the inside corner and cleaning the outside corner is convenient, the cleaning of the staircase structure can be carried out directly in sequence without the need for staggered or alternating cleaning. The cleaning of the inside and outside corners can completely cover the staircase mold structure. The 12 rollers of the rotating brush can be moved up and down along the inside or outside corner to polish the staircase structure of the mold.

[0032] Step 5: Tool recovery. After cleaning, turn off the motor and clean and maintain brush 12.

[0033] The specific working process of this invention: In the initial state, under the reset action of the coil spring 11, the support rods 8 on the two discs 4 move inward toward the axis of the rotating shaft 3. At this time, the L-shaped rods 2 on the left and right sides move toward the middle, and the sleeve 13 is located near the bottom of the T-shaped handle 1. At this time, the motor drives the second bevel gear to mesh with the first bevel gear to rotate, so that the two rotating shafts 3, the telescopic rod and the discs 4 rotate at the same angular velocity. During the rotation, the brush 12 forms a rotating body, which is thin in the middle and thick at both ends. After the angle of the rotating body is adjusted by sliding the sleeve 13, it is positioned by the limit pin 17, which can clean the external corner and part of the mold stair structure surface. When it is necessary to clean the mold plane structure, the L-shaped rods 2 on both sides move outward in the opposite direction under the support of the connecting rod 14. At this time, the two discs 4 move away from each other. During this process, the wire rope 10 is gradually tightened. At the same time, the tightening of the wire rope 10 causes the support rods 8 to move inward. Gradually, the inner end moves closer to the rotating shaft 3 and then becomes horizontal with the rotating shaft 3. At this time, the rotating body formed by multiple brushes 12 is a cylindrical brush roller 12. After being locked by the positioning pin, it can clean the flat part of the non-staircase structural surface of the mold. The sleeve 13 is continuously driven to move upward, and the L-shaped rods 2 on both sides move further away. The corresponding disc 4 moves further away, so that the wire rope 10 is continuously pressed. At this time, the outer end of the support rod 8 moves closer to the axis of the rotating shaft 3. At this time, the rotating body formed by multiple brushes 12 is a brush roller 12 that is thin at both ends and thick in the middle. After the angle of the rotating body is adjusted by sliding the sleeve 13, it is positioned by the limit pin 17. It can clean the inside corner and part of the mold staircase structural surface. In the process of cleaning the inside corner and outside corner of the mold, it is necessary to approach the inside and outside corners along the angle bisector of the inside and outside corners first, and make the brush 12 surface of the rotating body brush roller fit with the inside and outside corners. Moving along the direction of the inside and outside corners, the inside and outside corners and their associated staircase structural surfaces are cleaned.

[0034] It is worth noting that the width of the foot tread (horizontal structural surface) of a staircase is often greater than that of the raised surface (vertical structural surface). Therefore, during the cleaning of inside and outside corners, the rotating brush rollers 12 should ensure that the cleaning area of ​​the two brush rollers 12 can completely cover the foot tread. At the same time, the support and drive components in this equipment should not contact the mold. Therefore, the length of one brush 12 should be greater than the width of the raised surface. Only in this way can the extended drive component not contact the mold at the inside corner. However, if the length of the brush 12 is greater than the width of one raised surface, the end of the rotating body formed by the brush 12 at the outside corner may interfere with the mold. Therefore, when grinding the outside corner, the two discs 4 need to be close to each other so that the included angle formed by the rotating body expands outward. At this time, only a part of the brush 12 contacts the outside corner structural surface without causing interference, and the structural surface can be completely covered during the alternating grinding of inside and outside corners.

[0035] The advantages of this device are:

[0036] 1. Compared with existing large-scale equipment, this device is small in size, low in production cost, easy to use, highly versatile, and highly mobile. Compared with traditional handheld abrasive cleaning equipment, this device offers multiple speed settings. Designed specifically for the structure of stair molds, it allows for quick switching between cleaning and polishing inside and outside corners, eliminating the need for workers to change cleaning angles multiple times. This makes the cleaning process more efficient, significantly reduces the labor intensity of workers, and noticeably improves the cleaning quality. This device retains the economic advantages of manual equipment while also possessing the high efficiency of large-scale equipment.

[0037] 2. When cleaning inside and outside corners, after adjusting to the corresponding gear, the device uses the angle bisector of the inside and outside corners as the direction of advancement so that the brush 12 contacts the structural surface. At the same time, the structural surface provides a reverse support for the device. Compared with the traditional handheld device where the support part is entirely maintained by the human body, this device is more labor-saving and stable during the cleaning process, further reducing labor intensity and making the device safer to use.

[0038] 3. In the process of cleaning inside and outside corners, this device takes into account the entire cleaning surface and avoids interference between the equipment drive and the mold. The entire device is cleverly and reasonably designed, and its practicality is significantly improved. At the same time, the device is exquisite and has low production cost, making it easy to manufacture and promote widely.

Claims

1. A prefabricated building prefabricated stair mold special curing equipment, characterized in that, The device includes a T-shaped handle (1), with an L-shaped rod (2) that can slide left and right inserted into each of the two upper ends of the T-shaped handle (1). The two L-shaped rods (2) are symmetrical. A disc (4) is rotatably mounted on the upper end of each L-shaped rod (2) via a pivot (3). The two discs (4) are fixedly connected by a telescopic rod. The telescopic rod includes a sleeve (5), with a smooth rod (6) slidably mounted on each end of the sleeve (5). The end of the smooth rod (6) is fixed on the disc (4) on the corresponding side. The sleeve (5) and the smooth rod (6) in the telescopic rod cannot rotate relative to each other. Multiple supports (7) are evenly distributed around the outer edge of each disc (4). Each support (7) is provided with a support rod (8). The middle position is hinged to the bracket (7). The bracket (7) is provided with a fixed pulley (9) located below the support rod (8). Each support rod (8) is fixed with a steel wire rope (10) placed outside its hinge axis. The free end of the steel wire rope (10) passes around the fixed pulley (9) and is fixed to the sleeve (5). When the two discs (4) move away from each other, the inner end of the support rod (8) swings away from the axis of the telescopic rod under the driving action of the steel wire rope (10). The hinge axis of the support rod (8) is provided with a coil spring (11) to make its inner end move closer to the axis of the telescopic rod and reset. The number of support rods (8) on the left and right discs (4) is the same and they are staggered and interlocked. Each support rod (8) is provided with a brush (12) on its outer end face.

2. The special curing equipment for prefabricated staircase molds in prefabricated buildings according to claim 1, characterized in that, The two upper ends of the T-shaped handle (1) are each provided with a rectangular blind hole for inserting an L-shaped rod (2). The cross section of the L-shaped rod (2) corresponds to the rectangular blind hole. A sleeve (13) is fitted onto the lower end of the T-shaped handle (1). A first hinge lug is provided on each of the left and right sides of the sleeve (13). A second hinge lug is fixed at the lower end of each L-shaped rod (2). The first hinge lug and the second hinge lug are hinged together by an inclined connecting rod (14).

3. The special curing equipment for prefabricated staircase molds in prefabricated buildings according to claim 2, characterized in that, The T-shaped handle (1) is provided with a slide rail, and the two ends of the slide rail are provided with blocks (15). The sleeve (13) is provided with a groove that cooperates with the slide rail, and the blocks (15) limit the sliding distance of the sleeve (13).

4. The special curing equipment for prefabricated staircase molds in prefabricated buildings according to claim 1, characterized in that, A first bevel gear is fixed on the rotating shaft (3), and a second bevel gear, driven by a motor and meshing with the first bevel gear, is fixed on the L-shaped rod (2).

5. A special curing equipment for prefabricated staircase molds in prefabricated buildings according to claim 2, characterized in that, The lower end of the T-shaped handle (1) and the sleeve (13) are respectively fitted with anti-slip rubber sleeves (16).

6. The special curing equipment for prefabricated staircase molds in prefabricated buildings according to claim 1, characterized in that, The sleeve (5) is a hollow tube with a square cross-section, and the smooth rod (6) is a solid rod with a square cross-section. The sleeve (5) and the smooth rod (6) are slidably fitted together and cannot be separated from each other.

7. A special curing equipment for prefabricated staircase molds in prefabricated buildings according to claim 2, characterized in that, The sleeve (13) is provided with a limiting pin (17). Pressing the limiting pin (17) causes the sleeve (13) to be at the upper limit of the T-shaped handle (1).

8. A method for using a special curing equipment for prefabricated staircase molds in prefabricated buildings, characterized in that, The prefabricated staircase mold curing equipment for prefabricated buildings, as described in claim 7, includes the following steps: Step 1: Check the equipment. Before use, check the integrity of the equipment and connect the power supply. Step 2: Select the gear position. The sleeve (13) is divided into three gear positions on the T-shaped handle (1): cleaning the external corner gear position, cleaning the internal corner gear position, and cleaning the flat surface gear position. Drive the sleeve (13) to slide on the T-shaped handle (1) to different gear positions according to the position of the mold to be cleaned. And limit the sleeve (13) at the position by pressing the limit pin (17) to achieve gear selection. Step 3: Select the feed angle for cleaning according to the cleaning position: When the two discs (4) are driven to rotate by the motor at different gears, multiple brushes (12) arranged at intervals form a rotating body during the high rotation process. This rotating body forms a brush (12) roller. When cleaning the external corner gear, the inner end of the support rod (8) moves closer to the axis of the rotating shaft (3). At this time, the rotating body formed is a brush (12) roller that is thin in the middle and thick at both ends. The feed method adopts the angle bisector of the external corner to make the brush (12) roller brush (12) When cleaning the inner corner, the outer end of the support rod (8) moves closer to the axis of the rotating shaft (3), and the rotating body formed at this time is a brush (12) roller with a thick middle and thin ends. The feeding method adopts the angle bisector of the inner corner so that the brush (12) surface of the brush (12) roller is in contact with the inner corner. When cleaning the flat plate, the support rod (8) is parallel to the rotating shaft (3), and the rotating body formed at this time is a cylindrical brush (12) roller. The brush (12) roller can be directly in contact with the part to be cleaned. Step 4: Sequential cleaning. Since the switching between cleaning the inner corner and cleaning the outer corner is convenient, the cleaning of the staircase structure can be carried out directly in sequence without the need for staggered alternating cleaning. The process of cleaning the inner and outer corners can completely cover the staircase mold structure. Only the brush (12) roller forming the rotating body needs to move up and down along the inner or outer corner to polish and achieve the cleaning of the mold staircase structure. Step 5: Tool recycling. After cleaning, turn off the motor and clean and maintain the brush (12).

Images