A prefabricated laminated slab steel bar slotting device

Abstract

The utility model discloses a prefabricated composite slab steel bar grooving device, including the cuboid type of outside, no upper cover's casing, the first cutting mechanism who is used for cutting the adhesive strip to be provided with on the center line of casing bottom end surface front position, the first cutting mechanism top casing is equipped with the briquetting in all, and the handle who is used for pressing briquetting is arranged with casing assembly above briquetting. The utility model has the advantages of accurate grooving position, high grooving efficiency, smooth grooving, can save the labor.

Description

Technical Field

[0001] This utility model relates to the field of precast composite slab technology, and more specifically to a precast composite slab reinforcement groove cutting device. Background Technology

[0002] Precast composite slabs consist of a concrete base slab, reinforcing bars, and steel mesh. They are prefabricated in a factory, transported to the construction site, and then bonded to the cast-in-place concrete layer to form an integral load-bearing structure. They cleverly combine the high efficiency of precast components with the good integrity of cast-in-place structures, making them a key component in modern prefabricated buildings.

[0003] Currently, molds are commonly used in the production of precast composite slabs. The mold assembly process is as follows: 1) Assemble the bottom fiberglass side mold according to the required dimensions of the precast composite slab; 2) Fix the bottom fiberglass side mold with fixing nuts; 3) Place the adhesive strip and groove it; 4) Place the embedded steel bars along the grooves; 5) Install the upper fiberglass side mold that matches the bottom side mold; 6) Secure the upper and bottom fiberglass side molds with fixing bolts. Currently, in the industry, the third step of grooving the adhesive strip is usually done manually using tools such as saw blades and utility knives. This process is prone to problems such as low accuracy in groove position and dimensions, which in turn affects the structural stability and load-bearing performance of the precast components.

[0004] Therefore, there is an urgent need for a precast composite slab reinforcement slotting device. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a precast composite slab reinforcement grooving device to solve the problems in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0007] A precast composite slab rebar grooving device includes a rectangular shell without a top cover; a first cutting mechanism is provided at the front of the center line of the bottom end face of the shell, which extends out of the bottom end face of the shell and is used to cut rubber strips; a pressure block is provided inside the shell above the first cutting mechanism to press the first cutting mechanism, and a handle is provided above the pressure block, which is assembled with the shell, used to press the pressure block, and facilitates the operation of the grooving device.

[0008] To further optimize the technical solution, the first cutting mechanism includes two first support bodies in the shape of right-angled triangular prisms, with the inclined surfaces of the two first support bodies facing upwards and arranged opposite each other; each of the inclined surfaces of the first support bodies is provided with a first blade groove, which extends from the bottom end of the center line of the housing to both sides; a first blade for cutting rubber strips is inserted in the first blade groove, and the tips of the two first blades extend out of the bottom end face of the housing; the tips of the two first blades are staggered vertically, and the projections of the tips of the two first blades are both located on the center line.

[0009] To further optimize the technical solution, a second cutting mechanism is provided on the inner wall of one side of the rear part of the housing. The second cutting mechanism includes a second blade groove that is vertically opened on the inner wall and is inclined back and forth. A second blade is installed in the second blade groove, and the tip of the second blade extends out of the housing from the bottom end face of the housing. A third support body in the shape of a right-angled triangular prism is provided in the housing on the opposite side of the second blade groove. The inclined surface of the third support body is set upward, and a third blade groove is opened on the inclined surface of the third support body. A third blade is locked in the third blade groove, and the tip of the third blade extends out of the bottom end face of the housing. The second blade and the third blade are opposite each other, and the tips are staggered vertically. The projections of the second blade and the third blade are both located on a straight line parallel to the side wall of the housing.

[0010] To further optimize the technical solution, the side wall of the pressure block is provided with pressing protrusions for pressing against the first blade, the second blade, and the third blade, respectively.

[0011] To further optimize the technical solution, a first observation hole in the shape of a strip and located between the two first blades is opened on the bottom end face of the housing, and a third observation hole corresponding to the position of the first observation hole is opened on the pressure block.

[0012] To further optimize the technical solution, the handle is Y-shaped, and the upper surface of the handle is an ergonomically designed curved surface.

[0013] To further optimize the technical solution, a bolt through hole is provided on the side wall of the rear part of the housing, and a threaded blind hole coaxial with the bolt through hole is provided at the tail of the vertical section of the rear part of the handle; a pair of concave holes are provided on the inner side wall of the front part of the housing, and a protrusion that mates with the concave hole is provided at the front end of the Y-shaped branch of the front part of the handle; the handle and the housing are positioned by bolts screwed into the threaded blind hole and the bolt through hole.

[0014] To further optimize the technical solution, an installation observation hole is provided on the top surface of the rear side wall of the housing, which is perpendicular to and connected to the bolt through hole.

[0015] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0016] This utility model provides a grooving device for precast composite slab reinforcement. The blade tilt angle and tip extension length are designed according to cutting needs, ensuring the accuracy of the grooving position, thus improving the precision of the reinforcement placement and consequently enhancing the overall quality of the precast composite slab. By using a pair of blades working in tandem, a single stroke completes the cutting of a strip of adhesive, effectively preventing burrs and damage. This utility model offers advantages such as precise grooving position, high grooving efficiency, smooth grooving, and labor savings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is the left view of the present invention; Figure 5 This is a schematic diagram of the handle structure in this utility model; Figure 6 This is a schematic diagram of the structure of the pressure block in this utility model; Figure 7 This is a perspective view of the shell in this utility model.

[0018] The components are: 1. Housing; 11. Mounting observation hole; 12. First blade groove; 13. Second blade groove; 14. Third blade groove; 15. First observation hole; 17. Recessed hole; 18. Bolt through hole; 21. First support body; 23. Third support body; 3. Pressure block; 31. Pressing protrusion; 32. Third observation hole; 4. Handle; 41. Protrusion; 5. First blade; 6. Second blade; 7. Third blade. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] A precast composite slab reinforcement grooving device, combined with Figures 1 to 7 As shown, the device includes a housing 1, a first support 21, a third support 23, a pressure block 3, a clamping protrusion 31, a third observation hole 32, a handle 4, a first blade 5, a second blade 6, and a third blade 7. The housing 1 includes an observation hole 11, a first blade groove 12, a second blade groove 13, a third blade groove 14, a first observation hole 15, a recess 17, and a bolt through hole 18; a protrusion 41 is provided on the handle 4.

[0021] The outer shell 1 is rectangular in shape and has no top cover. A pair of recessed holes 17 are formed on the inner side wall of the front part of the shell 1, and the two recessed holes 17 are spaced apart by a distance. A bolt through hole 18 is formed on the side wall of the rear part of the shell 1, and the bolt through hole 18 is located in the middle position.

[0022] A first cutting mechanism is provided at the front of the center line on the bottom end face of the housing 1. The first cutting mechanism extends out of the bottom end face of the housing and is used for grooving the adhesive strip in conventional areas without special space restrictions. The first cutting mechanism includes two first support bodies 21, which are blocks in the shape of right-angled triangular prisms. The inclined surfaces of the two first support bodies 21 face upward and are arranged opposite each other. The two vertical surfaces of the first support bodies 21 are respectively attached to the left / right side walls and the bottom end face of the housing 1.

[0023] First blade grooves 12 are provided on the inclined surface of the first support body 21. The first blade grooves 12 extend from the bottom end of the center line of the housing 1 to both sides, and are inclined on the inclined surface of the first support body 21. First blades 5 for cutting adhesive strips are held in the first blade grooves 12. The cutting edges of the first blades 5 are all facing downwards, and the blade tips extend out of the bottom end face of the housing 1. The blade tips of the two first blades 5 are staggered vertically, and the projections of the blade tips are all located on the center line to facilitate cutting and ensure that the adhesive strip can be cut off.

[0024] A second cutting mechanism is also provided on the inner wall of the rear side of the housing 1, used to cut grooves in the rubber strip in areas with limited space, such as close to the fixing nut. The second cutting mechanism includes a second blade groove 13 vertically formed on the inner wall of the housing 1, and the second blade groove 13 is inclined back and forth on the inner wall to penetrate the rubber strip at a certain angle. A second blade 6 is provided in the second blade groove 13, and the tip of the second blade 6 extends out of the housing 1 from the bottom end face of the housing. A third support body 23 in the shape of a right-angled triangular prism is provided in the housing on the opposite side of the second blade groove 13. The inclined surface of the third support body 23 faces upward, and a third blade groove 14 is formed on the inclined surface of the third support body 23. A third blade 7 is held in the third blade groove 14, and the tip of the third blade 7 extends out of the bottom end face of the housing 1; the second blade 6 and the third blade 7 are arranged opposite each other, and the cutting edges of the second blade 6 and the third blade 7 are both set downward. The tips of the second blade 6 and the third blade 7 are staggered, and the projections of the two tips are both located on a straight line parallel to the side wall of the housing 1, so as to facilitate cutting and ensure that the rubber strip can be cut off.

[0025] A pressure block 3 is installed inside the housing above the first cutting mechanism. The pressure block 3 is used to press the first cutting mechanism. The side wall of the pressure block 3 is provided with pressing protrusions 31, which are used to abut against the first blade 5, the second blade 6, and the third blade 7, respectively. The pressing protrusions 31 are integrally formed with the pressure block 3.

[0026] The cutting edge angles and tip extension lengths of the first blade 5, the second blade 6, and the third blade 7 are optimized according to the cutting requirements, ensuring the efficiency and precision of conventional grooving.

[0027] The pressure block 3 is equipped with a handle 4 that connects to the housing and is used to press the pressure block 3. The handle 4 is Y-shaped to facilitate movement of the grooving device by operating the handle, and the upper surface of the handle 4 is an ergonomically designed curved surface, providing a stable and comfortable grip experience for grooving operations. The front end of the Y-shaped branch of the handle 4 is provided with a protrusion 41 that mates with the concave hole 17, and the rear vertical section of the handle 4 has a threaded blind hole coaxial with the bolt through hole 18. The handle 4 is positioned to the housing by bolts screwed into the threaded blind hole and the bolt through hole 18.

[0028] A first observation hole 15, which is strip-shaped and located between the two first blades, is provided on the bottom end face of the housing 1, and a third observation hole 32, which corresponds to the position of the first observation hole 15, is provided on the pressure block 3.

[0029] An installation observation hole 11 is provided on the top surface of the rear side wall of the housing 1, which is perpendicular to and communicates with the bolt through hole 18.

[0030] In practical use, the present invention first marks the positions where holes need to be made on the adhesive strip.

[0031] If grooving is required on regular areas of the rubber strip without special space restrictions, the first cutting mechanism is assembled. Two first blades are placed into their respective first blade slots. The pressure block 3 is placed inside the housing 1 to hold the blades in place. Then, the protrusion 41 at the front end of the handle 4 is inserted into the recess 17 of the housing 1, pressing the handle 4 against the pressure block 3. The handle 4 is then connected to the housing 1 using bolts. During grooving, the operator holds the handle 4, aligning the tip of the first blade 5 with the scribe line. The angle of the device is then adjusted through the third observation hole 32. The device is then placed stably on the rubber strip to be cut, and the groove is created by pushing or pulling the device across the surface of the rubber strip.

[0032] If grooving is required in confined spaces such as near the fixing nut on the rubber strip, the second cutting mechanism is assembled. The second blade is placed into the second blade groove, followed by the third blade groove. The pressure block 3 is placed inside the housing 1 to hold the blades in place. The protrusion 41 at the front end of the handle 4 is then inserted into the recess 17 of the housing 1, pressing the handle 4 against the pressure block 3. The handle 4 is then connected to the housing 1 using bolts. During grooving, the operator holds the handle 4, aligning the tips of the second blade 6 and the third blade 7 with the scribed line. The angle of the device is determined by observing from the side frame of the housing 1. The operator then pushes or pulls the device to scribble across the rubber strip surface to create the groove. Thanks to its special design with the blades located on the side of the housing, the grooving task can be completed smoothly without affecting the fixing nut and surrounding components, ensuring the comprehensiveness and integrity of the grooving operation, thereby effectively improving the overall quality and efficiency of rubber strip grooving.

Claims

1. A grooving device for reinforcing bars in precast composite slabs, characterized in that: The device includes a rectangular shell (1) without a top cover; a first cutting mechanism is provided at the front of the center line of the bottom end face of the shell (1) for cutting the rubber strip; a pressure block (3) for pressing the first cutting mechanism is provided in the shell above the first cutting mechanism, and a handle (4) is provided above the pressure block (3) for pressing the pressure block (3) and for easy operation of the grooving device.

2. The precast composite slab reinforcement slotting device according to claim 1, characterized in that: The first cutting mechanism includes two first support bodies (21) in the shape of right-angled triangular prisms. The inclined surfaces of the two first support bodies (21) face upward and are arranged opposite each other. Each of the inclined surfaces of the first support bodies (21) is provided with a first blade groove (12). The first blade groove (12) extends from the bottom end of the center line of the housing to both sides. The first blade groove (12) is fitted with a first blade (5) for cutting rubber strips. The tips of the two first blades (5) extend out of the bottom end face of the housing. The tips of the two first blades (5) are staggered vertically, and the projections of the tips of the two first blades (5) are both located on the center line.

3. The precast composite slab reinforcement slotting device according to claim 2, characterized in that: A second cutting mechanism is provided on the inner wall of the rear side of the housing (1). The second cutting mechanism includes a second blade groove (13) that is vertically opened on the inner wall and is inclined back and forth. A second blade (6) is provided in the second blade groove (13), and the tip of the second blade (6) extends out of the housing (1) from the bottom end face of the housing. A third support body (23) in the shape of a right-angled triangular prism is provided in the housing on the opposite side of the second blade groove (13). The inclined surface of the third support body (23) is set upward, and a third blade groove (14) is opened on the inclined surface of the third support body (23). A third blade (7) is locked in the third blade groove (14), and the tip of the third blade (7) extends out of the bottom end face of the housing (1). The second blade and the third blade are opposite to each other and the tips are staggered. The projections of the tips of the second blade and the third blade are both located on a straight line parallel to the side wall of the housing.

4. A precast composite slab reinforcement grooving device according to claim 2 or 3, characterized in that: The side wall of the pressure block (3) is provided with pressing protrusions (31) for pressing against the first blade (5), the second blade (6), and the third blade (7).

5. The precast composite slab reinforcement slotting device according to claim 1, characterized in that: The bottom surface of the housing has a first observation hole (15) that is strip-shaped and located between the two first blades, and the pressure block (3) has a third observation hole (32) that corresponds to the position of the first observation hole (15).

6. The precast composite slab reinforcement grooving device according to claim 1, characterized in that: The handle (4) is Y-shaped, and the upper surface of the handle (4) is an ergonomically designed curved surface.

7. The precast composite slab reinforcement grooving device according to claim 6, characterized in that: The rear side wall of the housing is provided with a bolt through hole (18), and the tail of the vertical section of the handle (4) is provided with a threaded blind hole coaxial with the bolt through hole (18); a pair of concave holes (17) are provided on the inner side wall of the front part of the housing (1), and a protrusion (41) that cooperates with the concave hole (17) is provided at the front end of the Y-shaped branch of the handle (4); the handle (4) and the housing are positioned by bolts screwed into the threaded blind hole and the bolt through hole (18).

8. The precast composite slab reinforcement slotting device according to claim 7, characterized in that: An installation observation hole (11) is provided on the top surface of the rear side wall of the housing (1), which is perpendicular to and communicates with the bolt through hole (18).

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