Steel bar positioning equipment for commercial concrete prefabricated part

Abstract

The invention belongs to the technical field of concrete prefabricated parts, and discloses steel bar positioning equipment for commercial concrete prefabricated parts, which comprises a main body box, a mold box is fixedly arranged on the inner wall of the bottom of the main body box, air pressure matching clamping assemblies are arranged on the side walls of the two sides of the main body box, and an air pressure measuring clamping assembly is arranged on the top wall of the main body box. The air pressure matching clamping assembly is connected with the air pressure measuring clamping assembly through a pipeline, and through the synergistic effect of the air pressure measuring clamping assembly and the air pressure matching clamping assembly, in combination with cooperation of a downward pressing measuring clamping plate and a reinforcing steel bar clamping groove and driving of a screw of a side clamping frame, the reinforcing steel bar is clamped. According to the equipment, automatic recognition, self-adaptive clamping force adjustment, accurate positioning and automatic centering of the reinforcing steel bars are achieved, the equipment clamps the reinforcing steel bars in a lossless mode in a friction transmission mode, damage to the reinforcing steel bars caused by a traditional mechanical clamping mode is avoided, automatic operation of reinforcing steel bar positioning and clamping is achieved through the automatic control principle, and the working efficiency is improved. And the steel bar positioning precision and the prefabricated part quality are effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of precast concrete components technology, and particularly relates to a rebar positioning device for commercial precast concrete components. Background Technology

[0002] Reinforced concrete precast components are commonly used precast parts in construction. Current technology involves passing reinforcing bars through the inside of a mold and using positioning holes within the mold to limit their movement. However, the following problems exist in actual production:

[0003] 1. The positioning of reinforcing bars mainly relies on manual operation. Due to the limitations of precision in manual operation, the positioning of reinforcing bars is often not accurate enough, which leads to unstable quality of precast components, affecting the safety of subsequent construction and use. In addition, the production efficiency of manual operation is low.

[0004] 2. Although some rebar positioning devices exist in the existing technology, their rebar clamping and fixing methods are mostly mechanical clamping. It is difficult to accurately control the clamping force. For thinner diameter rebars, if the clamping force is too large, the rebars are easily bent and plastically deformed. For thicker diameter rebars, if the clamping force is too small, the clamping is unstable and easily loosens, making it impossible to guarantee positioning accuracy. This dilemma in clamping force control not only affects the dimensional accuracy of precast components, but may also lead to uneven thickness of the rebar protective layer, reducing the durability and load-bearing capacity of the components.

[0005] Therefore, a precise, flexible, and reliable rebar positioning device for precast concrete components is needed to solve the above problems. Summary of the Invention

[0006] To address the above issues and overcome the shortcomings of existing technologies, this invention provides a rebar positioning device for precast concrete components. Through the synergistic action of a pneumatic pressure measuring clamping assembly and a pneumatic pressure matching clamping assembly, combined with the cooperation of a downward measuring clamping plate and a rebar slot, and the screw drive of the side clamping frame, automatic rebar identification, adaptive clamping force adjustment, precise positioning, and automatic centering are achieved. This device uses a friction transmission method to clamp the rebar without damage, avoiding the damage caused to the rebar by traditional mechanical clamping methods. Furthermore, through automated control principles, it achieves automated operation of rebar positioning and clamping, simplifying the operation process, reducing labor intensity, improving production efficiency, and effectively enhancing the rebar positioning accuracy and the quality of precast components.

[0007] The technical solution adopted in this invention is as follows: A steel bar positioning device for precast concrete components includes a main body box and support legs set on the bottom outer wall of the main body box. A mold box is fixedly provided on the bottom inner wall of the main body box. Air pressure matching clamping assemblies are provided on both side walls of the main body box. Two sets of air pressure matching clamping assemblies are provided. An air pressure measuring clamping assembly is provided on the top wall of the main body box. The air pressure matching clamping assembly is connected to the air pressure measuring clamping assembly by a pipeline. The air pressure measuring clamping assembly includes a sliding plate vertically slidingly disposed on the inner side wall of the main body box, an air cylinder vertically fixedly disposed through the sliding plate, and a piston rod movably sealed in the air cylinder. The air pressure matching clamping assembly includes a mounting frame fixedly disposed on the outer side wall of the main body box, an air cylinder fixedly disposed on the outer wall of the mounting frame, and a telescopic cylinder with its base end rotatably disposed on the inner side wall of the air cylinder. The output end of the telescopic cylinder is slidably disposed through the air cylinder on one side wall. An air inlet is opened at the base end of the telescopic cylinder. The air cylinder is connected to the air cylinder by a pipeline.

[0008] As a preferred technical solution of this invention, the pneumatic matching clamping assembly further includes a friction block one fixedly disposed at the output end of the telescopic cylinder, a friction block two rotatably disposed in the mounting frame, a threaded cylinder rotatably disposed on the inner side wall of the main body box, a screw threaded in the threaded cylinder, and a side clamping frame horizontally slidably disposed on the outer side wall of the mold box. The side clamping frame is fixedly connected to one end of the screw, the friction block two is coaxially driven connected to the threaded cylinder, and the friction block one corresponds to the friction block two.

[0009] As a preferred technical solution of this invention, a servo motor is fixedly installed on the outer wall of the pneumatic cylinder, and the output end of the servo motor is coaxially connected to the base end of the telescopic cylinder.

[0010] As a preferred technical solution of this invention, the air pressure measurement clamping assembly includes an electric push rod vertically fixed to the top wall of the main body box, a mounting frame horizontally fixed to the lower end of the piston rod, and a downward pressure measurement clamping plate symmetrically fixed to the lower wall of the mounting frame. The output end of the electric push rod is fixedly connected to the upper wall of the sliding plate, and a steel bar slot is provided along the lower edge of the downward pressure measurement clamping plate.

[0011] As a preferred technical solution of this invention, the top wall of the main body box is provided with a through hole, the through hole corresponds to the air cylinder, and the explosion-proof hose passes through the through hole to connect the air cylinder and the air pressure cylinder.

[0012] As a preferred technical solution of this invention, the mold box has steel bar placement grooves on both sides, and the steel bar placement grooves correspond to the steel bar slots.

[0013] The beneficial effects of the present invention after adopting the above structure are as follows:

[0014] (1) This invention achieves the function of automatically adjusting the clamping force according to the diameter of the steel bar through the synergistic effect of the air pressure measuring clamping component and the air pressure matching clamping component. Through the air pressure feedback adjustment principle, it realizes the automatic identification of steel bars of different diameters and the adaptive adjustment of the clamping force, which solves the problem in the prior art that it is difficult to accurately control the clamping force according to the diameter of the steel bar, resulting in the easy deformation of thin steel bars and the unstable clamping of thick steel bars.

[0015] (2) By combining the pressure measuring clamp and the rebar slot, the rebar is accurately pressed and fixed and automatically centered. This design ensures the accurate positioning of the rebar in the vertical direction. At the same time, the side clamping frame can accurately control the clamping position in the horizontal direction through the drive of the screw, so that the rebar is automatically centered in the horizontal direction. Through the mechanical limit, pneumatic feedback and dual-side cooperative drive principle, the rebar is accurately positioned and automatically centered in the horizontal and vertical directions.

[0016] (3) The steel bars are clamped by friction transmission, which avoids the damage to the steel bars caused by the traditional mechanical clamping method. The friction force between friction block one and friction block two can be adjusted according to the diameter of the steel bar, which can provide sufficient clamping force without causing excessive pressure on the steel bar. Through the principle of friction transmission, the steel bars are clamped without damage, which solves the problem that the mechanical clamping method in the existing technology is prone to causing steel bar deformation and affecting the dimensional accuracy and durability of precast components.

[0017] (4) This device realizes the automated operation of rebar positioning and clamping, reduces manual intervention and labor intensity. The whole operation process is simple and quick. Just put the rebar into the rebar placement slot and start the equipment to automatically complete the rebar positioning and clamping. Through the principle of automated control, the automation of rebar positioning and clamping is realized, the operation process is simplified, and the problems of low efficiency and high labor intensity of manual operation in the existing technology are solved. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the invention and do not constitute a limitation thereof.

[0019] Figure 1 This is a three-dimensional view of the overall structure of a steel bar positioning device for precast concrete components proposed in this invention;

[0020] Figure 2 This is a cross-sectional view of the overall structure of a steel bar positioning device for precast concrete components proposed in this invention;

[0021] Figure 3 This is a cross-sectional view of the overall structure of the pneumatic matching clamping assembly proposed in this invention;

[0022] Figure 4This is a schematic diagram of the connection structure of the mold box proposed in this invention;

[0023] Figure 5 This is a schematic diagram of the downward pressure measuring clamp proposed in this invention.

[0024] In the attached diagram: 1. Main body box; 2. Air pressure matching clamping assembly; 3. Air pressure measuring clamping assembly; 4. Mold box; 5. Explosion-proof hose; 6. Through hole; 7. Electric actuator; 8. Sliding plate; 9. Mounting frame; 10. Air cylinder; 11. Piston rod; 12. Downward measuring clamping plate; 13. Mounting bracket; 14. Air cylinder; 15. Telescopic cylinder; 16. Servo motor; 17. Friction block one; 18. Friction block two; 19. Threaded cylinder; 20. Screw; 21. Side clamping frame; 22. Support leg; 23. Rebar placement groove; 24. Rebar slot. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] like Figures 1-5As shown, a rebar positioning device for precast concrete components includes a main body box 1 and support legs 22 disposed on the bottom outer wall of the main body box 1. A mold box 4 is fixedly disposed on the bottom inner wall of the main body box 1. Two sets of air pressure matching clamping assemblies 2 are disposed on the two side walls of the main body box 1. An air pressure measuring clamping assembly 3 is disposed on the top wall of the main body box 1. The air pressure matching clamping assembly 2 and the air pressure measuring clamping assembly 3 are connected by pipes. The air pressure measuring clamping assembly 3 includes a sliding plate 8 that is vertically slidably disposed on the inner side wall of the main body box 1. The air cylinder 10 is vertically fixed inside the sliding plate 8 and the piston rod 11 is movably sealed inside the air cylinder 10. The air pressure matching clamping assembly 2 includes a mounting frame 13 fixedly mounted on the outer wall of the main body box 1, an air cylinder 14 fixedly mounted on the outer wall of the mounting frame 13, and a telescopic cylinder 15 with its base end rotatably mounted on the inner wall of the air cylinder 14. The output end of the telescopic cylinder 15 is slidably mounted on one side wall of the air cylinder 14. The base end of the telescopic cylinder 15 is provided with an air inlet. The air cylinder 10 is connected to the air cylinder 14 by a pipe.

[0028] The pneumatic matching clamping assembly 2 also includes a friction block 17 fixedly disposed at the output end of the telescopic cylinder 15, a friction block 28 rotatably disposed in the mounting frame 13, a threaded cylinder 19 rotatably disposed on the inner side wall of the main body box 1, a screw 20 threadedly disposed in the threaded cylinder 19, and a side clamping frame 21 horizontally slidably disposed on the outer side wall of the mold box 4. The side clamping frame 21 is fixedly connected to one end of the screw 20. The friction block 28 is coaxially driven connected to the threaded cylinder 19. The friction block 17 corresponds to the friction block 28. A servo motor 16 is fixedly disposed on the outer wall of the pneumatic cylinder 14. The output end of the servo motor 16 is coaxially driven connected to the base end of the telescopic cylinder 15.

[0029] The air pressure measuring clamping assembly 3 includes an electric push rod 7 vertically fixed to the top wall of the main body box 1, a mounting frame 9 horizontally fixed to the lower end of the piston rod 11, and a pressure measuring clamping plate 12 symmetrically fixed to the lower wall of the mounting frame 9. The output end of the electric push rod 7 is fixedly connected to the upper wall of the sliding plate 8. The lower edge of the pressure measuring clamping plate 12 is provided with a steel bar groove 24. The top wall of the main body box 1 is provided with a through hole 6, which corresponds to the air cylinder 10. The explosion-proof hose 5 passes through the through hole 6 to connect the air cylinder 10 and the air pressure cylinder 14.

[0030] The mold box 4 has steel bar placement grooves 23 on both sides, and the steel bar placement grooves 23 correspond to the steel bar slots 24.

[0031] In practical use, first place the steel bar into the steel bar placement groove 23, then start the electric actuator 7. The electric actuator 7 drives the sliding plate 8 and the air cylinder 10 to move downward. When the mounting frame 9 contacts the mold box 4, turn off the electric actuator 7 to keep the mounting frame 9 in contact with the mold box 4.

[0032] During this process, before the mounting frame 9 and the mold box 4 come into contact, the rebar slot 24 will first contact the rebar, thus forming a downward pressure to fix the rebar. At the same time, the downward pressure measuring clamp 12 cannot continue to move downward, so the gas in the air cylinder 10, the explosion-proof hose 5, and the air pressure cylinder 14 will be compressed. At this time, the air pressure in the telescopic cylinder 15 increases, the extension force of the telescopic cylinder 15 increases, and the contact force between friction block 17 and friction block 2 18 increases. Therefore, the friction between friction block 17 and friction block 2 18 increases. At this time, the servo motor 16 is started, and the servo motor 16 drives... The telescopic cylinder 15 and friction block 17 rotate. Friction block 17 drives friction block 2 18 to rotate through friction. Friction block 2 18 drives threaded cylinder 19 to rotate. At this time, screw 20 will drive side clamping frame 21 to move towards the middle at the same time, thereby clamping and fixing both ends of the steel bar. At this time, the steel bar and the lower pressure measuring clamp 12 slide friction, thereby using the side clamping frame 21 to push the steel bar to move in the horizontal direction, realizing the automatic centering of the steel bar. Then, the lower mold is installed at the bottom of the mold box 4, and concrete is poured into the mold box 4. Then, the upper mold is placed into the mold box 4.

[0033] When the diameter of the steel bar is thinner, the distance that the piston rod 11 moves upward is shorter than when the diameter of the steel bar is thicker. Therefore, when the diameter of the steel bar is thinner, the internal air pressure of the telescopic cylinder 15 is less than when the diameter of the steel bar is thicker. The friction between friction block 17 and friction block 28 is smaller. At this time, the torque of friction block 17 driving friction block 28 to rotate is also reduced accordingly. After the clamping force of the side clamping frame 21 on both ends of the steel bar reaches a certain level, sliding friction occurs between friction block 17 and friction block 28.

[0034] Conversely, when the diameter of the reinforcing bar is larger, the piston rod 11 moves upward a longer distance than when the diameter of the reinforcing bar is smaller. Therefore, when the diameter of the reinforcing bar is larger, the internal air pressure of the telescopic cylinder 15 is greater than when the diameter of the reinforcing bar is smaller. The friction between friction block 17 and friction block 2 18 increases, and the rotational torque also increases, thereby providing sufficient clamping force.

[0035] In summary, if a person skilled in the art, inspired by this invention, designs a similar structure and embodiment without departing from the spirit of the invention, such design should fall within the scope of protection of this invention.

Claims

1. A rebar positioning device for precast concrete components, characterized in that: Includes a main body box (1), a mold box (4) is fixedly provided on the bottom inner wall of the main body box (1), air pressure matching clamping components (2) are provided on both side walls of the main body box (1), two sets of air pressure matching clamping components (2) are provided, and air pressure measuring clamping components (3) are provided on the top wall of the main body box (1). The air pressure matching clamping components (2) and air pressure measuring clamping components (3) are connected by pipes. The air pressure measuring clamping assembly (3) includes an air cylinder (10) that is vertically slidably disposed on the inner side wall of the main body box (1) and a piston rod (11) that is movably and sealed inside the air cylinder (10); The pneumatic matching clamping assembly (2) includes a pneumatic cylinder (14) fixedly disposed on the outer side wall of the main body box (1) and a telescopic cylinder (15) rotatably disposed on the inner side wall of the pneumatic cylinder (14) at the base end. The output end of the telescopic cylinder (15) is slidably disposed on one side wall of the pneumatic cylinder (14), and an air inlet is provided at the base end of the telescopic cylinder (15). The air cylinder (10) is connected to the air pressure cylinder (14) via a pipe.

2. The rebar positioning device for precast concrete components according to claim 1, characterized in that: The pneumatic matching clamping assembly (2) also includes a friction block one (17) fixedly disposed at the output end of the telescopic cylinder (15), a friction block two (18) rotatably disposed on the outer side wall of the main body box (1), a threaded cylinder (19) rotatably disposed on the inner side wall of the main body box (1), a screw (20) threaded in the threaded cylinder (19), and a side clamping frame (21) horizontally slidably disposed on the outer side wall of the mold box (4). The side clamping frame (21) is fixedly connected to one end of the screw (20), the friction block two (18) is coaxially connected to the threaded cylinder (19), and the friction block one (17) corresponds to the friction block two (18).

3. The rebar positioning device for precast concrete components according to claim 2, characterized in that: The outer wall of the pneumatic cylinder (14) is fixedly equipped with a servo motor (16), and the output end of the servo motor (16) is coaxially connected to the base end of the telescopic cylinder (15).

4. The rebar positioning device for precast concrete components according to claim 3, characterized in that: The air pressure measuring clamping assembly (3) also includes an electric push rod (7) vertically fixed on the top wall of the main body box (1), a mounting frame (9) horizontally fixed on the lower end of the piston rod (11), and a downward pressure measuring clamping plate (12) symmetrically and vertically fixed on the lower wall of the mounting frame (9). The output end of the electric push rod (7) is fixedly connected to the air pressure cylinder (14), and the lower edge of the downward pressure measuring clamping plate (12) is provided with a steel bar slot (24).

5. The rebar positioning device for precast concrete components according to claim 1, characterized in that: The main body box (1) has a through hole (6) on its top wall, which corresponds to the air cylinder (10).

6. The rebar positioning device for precast concrete components according to claim 4, characterized in that: The mold box (4) has steel bar placement grooves (23) on both sides, and the steel bar placement grooves (23) correspond to the steel bar slots (24).

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