Steel bar cut-off machine for floor prefabricated part distribution bars

Abstract

The invention relates to the technical field of steel bar cutting equipment, and discloses a steel bar cutting machine for floor prefabricated part distribution bars, which comprises a vehicle body, a box body and a positioning seat are arranged at the top of the vehicle body, a reciprocating push rod is movably arranged in the box body, and the reciprocating push rod is driven by a motor arranged at the top of the vehicle body to horizontally reciprocate; a fixed tool apron is fixedly installed on the positioning base, two fixed blades which are arranged up and down are fixedly installed on the fixed tool apron, and two blade assemblies are arranged in the box body. Two blades are arranged up and down, and a rotatable rectangular push block is arranged at one end of a reciprocating push rod, so that the rectangular push block only pushes one of the blade assemblies to move when a reinforcing steel bar is cut off, the rectangular push block rotates to be in a horizontal state and moves between the two blade assemblies in a reinforcing steel bar feeding stage, and when one of the reinforcing steel bars is cut off, the rectangular push block only pushes one of the blade assemblies to move. And the time for waiting for steel bar feeding to control the cutting length is saved, so that the cutting efficiency of the steel bars is improved.

Description

Technical Field

[0001] The present application relates to the technical field of steel bar cutting equipment, and particularly relates to a steel bar cutting machine for distribution steel bars of floor precast components. Background Technique

[0002] The distribution steel bars in floor precast components are important structural steel bars to ensure the integrity and durability of the structure. As fixed stress-bearing main steel bars, they resist shrinkage and temperature stresses. The distribution steel bars transfer local stresses evenly to the main steel bars through a grid structure to avoid cracking caused by stress concentration. The distribution steel bars in floor precast components generally need to be cut to the required length by a steel bar cutting machine. The existing steel bar cutting machines include two types: hydraulic drive and eccentric wheel type. Among them, the eccentric wheel type steel bar cutting machine has a simple structure, is mobile and portable, has strong stability, and low cost, and is often used at the construction site.

[0003] For the existing eccentric wheel type steel bar cutting machine, it is driven by a motor, uses a gear set to increase torque, then is transmitted and clutched by a clutch, and cooperates with the rotation of the eccentric wheel to realize the reciprocating movement of the moving blade, and cooperates with the fixed blade to shear the steel bar. Due to the limited shearing force of the existing eccentric wheel type, generally a single steel bar is cut. After the steel bar is cut, it is necessary to wait for the steel bar to be reloaded, resulting in low efficiency of steel bar cutting. And it is necessary to frequently control the separation and reset of the clutch, making the clutch prone to wear, with high cost and inconvenient maintenance. Summary of the Invention

[0004] The present application proposes a steel bar cutting machine for distribution steel bars of floor precast components, which has the advantages of high efficiency, low cost, and easy maintenance of steel bar cutting, and is used to solve the problems existing in the existing eccentric wheel type steel bar cutting machine, such as low efficiency of single steel bar cutting, and wear caused by frequent separation and reset of the clutch, resulting in high cost and inconvenient maintenance.

[0005] To achieve the above object, the present application adopts the following technical solution: A steel bar cutting machine for distribution steel bars of floor precast components, including a vehicle body, a box body and a positioning seat are arranged on the top of the vehicle body, a reciprocating push rod is movably arranged in the box body, and the reciprocating push rod is driven by a motor arranged on the top of the vehicle body to move horizontally back and forth. A fixed knife seat is fixedly installed on the positioning seat, and two fixed blades arranged up and down are fixedly installed on the fixed knife seat. A blade assembly corresponding to each of the two fixed blades is arranged in the box body. One end of the reciprocating push rod is fixedly installed with a piston plate, and the side of the piston plate away from the reciprocating push rod is movably connected with a transmission shaft, and a rectangular push block is fixedly sleeved on the transmission shaft.

[0006] Control the transmission shaft to drive the rectangular push block to rotate. When cutting the steel bar, make the rectangular push block only push one of the blade assemblies to move. During the steel bar loading stage, make the rectangular push block rotate to a horizontal state and move between the two blade assemblies.

[0007] Further, an inner groove is formed in the box body on one side close to the positioning seat, and two sliding grooves are further formed in the box body on one side of the inner groove. Both sliding grooves are communicated with the inner groove, and the blade assembly is arranged in the sliding grooves.

[0008] Further, a first arc-shaped groove is formed in the inner groove of the vehicle body. One side of the front surface of the inner groove is fixedly provided with a side cover, and a second arc-shaped groove is formed in the side cover. The piston plate is movably arranged in a circular groove formed by splicing the second arc-shaped groove and the first arc-shaped groove.

[0009] Further, the blade assembly includes a movable knife seat movably sleeved in the sliding groove. A movable blade facing the fixed blade is fixedly installed on the movable knife seat. A passive plate is fixedly installed on one side of the movable knife seat. A return spring located above the movable knife seat is fixedly installed on one side of the passive plate, and one end of the return spring is movably connected to the inner wall of the inner groove.

[0010] Further, a transmission pipe sleeve is movably sleeved on the box body. One end of the transmission pipe sleeve is movably sleeved with the end of the transmission shaft far from the rectangular push block. A gear box is fixedly installed on the outer side of the box body. One end of the gear box far from the rectangular push block extends into the interior of the gear box and is fixedly installed with a first gear. A second gear is also movably sleeved in the interior of the gear box. A positioning rotating shaft is fixedly installed on the second gear. The outer side of the positioning rotating shaft is meshed with the outer side of the first gear. One end of the second gear extends out of the outer side of the gear box and is fixedly connected with a push rod.

[0011] Further, a transmission pipe sleeve is movably sleeved on the box body. One end of the transmission pipe sleeve is movably sleeved with the end of the transmission shaft far from the rectangular push block. A servo motor is fixedly installed on the outer side of the box body. The output rotating shaft of the servo motor is fixedly connected with the end of the transmission pipe sleeve far from the transmission shaft.

[0012] Further, a limit support device is fixedly installed on the box body on one side in front of the fixed knife seat. The limit support device includes two sliding rods movably sleeved on the box body. One ends of the two sliding rods are fixedly connected with a limit support plate. A second spring located between the box body and the limit support plate is also movably sleeved on the two sliding rods. The other end of the limit support plate extends to the outer side of the box body and is fixedly connected with a baffle plate.

[0013] Further, a notch is formed in the limit support plate, and the inner side wall of the notch is not in contact with the transmission pipe sleeve.

[0014] The beneficial effects of the present invention are as follows: 1. A steel bar cutting machine for the distribution steel bars of a floor precast member provided by the present application. Through two blades arranged up and down, and a rotatable rectangular push block is arranged at one end of a reciprocating push rod. When cutting the steel bar, the rectangular push block only pushes one of the blade assemblies to move. In the steel bar feeding stage, the rectangular push block rotates to a horizontal state and moves between the two blade assemblies. When cutting one steel bar, another steel bar is fed, saving the time for waiting for the steel bar feeding to control the cutting length, thereby improving the cutting efficiency of the steel bar.

[0015] 2. A steel bar cutting machine for the distribution steel bars of a floor precast member provided by the present application. By arranging two blades separately above and below, and a rotatable rectangular push block is arranged at one end of a reciprocating push rod. Compared with the existing steel bar cutting machine, which controls the separation of the clutch to prevent the horizontal movement of the blade assembly for steel bar feeding and control the cutting length, the problem of wear caused by the frequent contact and separation of the clutch is avoided, and the service life of the clutch is improved. Compared with the clutch of the existing steel bar cutting machine, which is repaired and maintained in the box, in the present application, after opening the side cover, the replacement of the rectangular push block and the blade assembly is more convenient, making the later maintenance more convenient. Moreover, the clutch arranged in the box of the present application can be only used for overload protection during the steel bar cutting process, which can reduce the use cost of the clutch. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings: Figure 1 It is a schematic structural diagram of Embodiment 1 of the present invention; Figure 2 It is Figure 1 a schematic structural diagram after removing the side cover in Figure 3 It is Figure 2 a schematic structural diagram of the inner groove, sliding groove and first arc groove in the box in Figure 4 It is Figure 1 a schematic structural diagram of the back surface of the cover plate in Figure 5 It is Figure 2 a schematic structural diagram of the blade assembly in Figure 6 It is Figure 1 a left view of Figure 7 It is Figure 6 a schematic structural diagram of the internal structure of the gear box in Figure 8 For Figure 1 the structural schematic diagram of the middle limit support device; Figure 9 This is the structural schematic diagram of the second embodiment of the present invention.

[0017] In the figure: 1, vehicle body; 2, box body; 201, inner groove; 202, sliding groove; 203, first arc groove; 3, positioning seat; 4, fixed tool holder; 5, fixed blade; 6, reciprocating push rod; 7, side cover; 701, second arc groove; 8, piston plate; 9, transmission shaft; 10, rectangular push block; 11, movable tool holder; 12, movable blade; 13, passive plate; 14, return spring; 15, transmission pipe sleeve; 16, gear box; 17, first gear; 18, positioning rotating shaft; 19, second gear; 20, push rod; 21, limit support device; 211, sliding rod; 212, limit support plate; 2121, notch; 213, second spring; 214, baffle; 22, servo motor. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] Embodiment 1, as Figures 1-3 , a steel bar cutting machine for the distribution bars of floor precast members, including a vehicle body 1, a box body 2 and a positioning seat 3 are arranged on the top of the vehicle body 1, a fixed tool holder 4 is fixedly installed on the positioning seat 3, and two fixed blades 5 facing one side of the box body 2 are fixedly installed on the fixed tool holder 4, and the two fixed blades 5 are arranged up and down. A reciprocating push rod 6 facing one side of the positioning seat 3 is movably installed on the box body 2, and the reciprocating push rod 6 is driven by a motor arranged on one side of the top of the vehicle body 1 and transmitted through a transmission box, a clutch and an eccentric wheel transmission mechanism arranged in the vehicle body 1 to perform horizontal reciprocating movement (the driving method of the horizontal reciprocating movement of the reciprocating push rod 6 is the same as the structure of the existing steel bar cutting machine, and the specific structure will not be elaborated here). An inner groove 201 is opened on the box body 2 near one side of the positioning seat 3, and two sliding grooves 202 are further opened on the box body 2 on one side of the inner groove 201. The two sliding grooves 202 are both communicated with the inner groove 201. The two sliding grooves 202 are arranged up and down, and the two sliding grooves 202 respectively correspond to the two fixed blades 5 one by one.

[0020] A first arc groove 203 is also opened on the vehicle body 1 inside the inner groove 201. A side cover 7 is fixedly installed on one side of the front of the inner groove 201. Please refer to Figures 1-4, a second arc-shaped groove 701 is formed in the side cover 7. A piston plate 8 is movably sleeved in the circular groove formed by splicing the second arc-shaped groove 701 and the first arc-shaped groove 203. One side of the piston plate 8 is fixedly connected to one end of the reciprocating push rod 6. The other side of the piston plate 8 is movably connected to a transmission shaft 9. The transmission shaft 9 moves together with the piston plate 8, and the transmission shaft 9 can rotate relative to the piston plate 8. A rectangular push block 10 located on the other side of the piston plate 8 is fixedly sleeved on the transmission shaft 9.

[0021] Two blade assemblies corresponding to the two fixed blades 5 are respectively movably sleeved in the two sliding grooves 202. Please refer to Figures 2-3 , Figure 5 , the blade assembly includes a movable tool holder 11 movably sleeved in the sliding groove 202. And the movable tool holder 11 can only move horizontally under the limiting action of the inner wall of the inner groove 201 and the side cover 7. A movable blade 12 facing one side of the fixed blade 5 is fixedly installed on the movable tool holder 11. A passive plate 13 is fixedly installed on one side of the movable tool holder 11. A return spring 14 located above the movable tool holder 11 is fixedly installed on one side of the passive plate 13. And one end of the return spring 14 is movably connected to the inner wall of the inner groove 201. By using the elastic force of the return spring 14, the blade assembly can be moved into the inner groove 201 without affecting the reinforcement passing through between the box body 2 and the positioning seat 3.

[0022] Please refer to Figure 2 , Figures 6-7, a drive tube sleeve 15 is movably sleeved on the box body 2. One end of the drive tube sleeve 15 is movably sleeved with the end of the drive shaft 9 away from the rectangular push block 10, and the drive tube sleeve 15 can drive the drive shaft 9 to rotate together. A gear box 16 is fixedly installed on the outer side of the box body 2. One end of the gear box 16 away from the rectangular push block 10 extends into the interior of the gear box 16 and a first gear 17 is fixedly installed. A second gear 19 is also movably sleeved in the interior of the gear box 16. A positioning rotating shaft 18 is fixedly installed on the second gear 19. The outer side of the positioning rotating shaft 18 meshes with the outer side of the first gear 17. One end of the second gear 19 extends out of the outer side of the gear box 16 and is fixedly connected with a push rod 20. In the initial state, the push rod 20 is in a vertical state. At this time, the rectangular push block 10 is in a horizontal state and is located between the two movable tool holders 11. When the reciprocating push rod 6 drives the piston plate 8 and the rectangular push block 10 to move horizontally back and forth, it will not push one of the two movable tool holders 11 to move horizontally together. The operator manually rotates the push rod 20 counterclockwise to drive the second gear 19 and the positioning rotating shaft 18 to rotate, and then drives the positioning rotating shaft 18 and the drive tube sleeve 15, the drive shaft 9, and the rectangular push block 10 to rotate clockwise by 90 degrees (the rotation angle of the push rod 20 can be controlled by the gear transmission ratio of the second gear 19 and the first gear 17, so that after the push rod 20 is rotated, the rectangular push block 10 can just rotate by 90 degrees), so that one end of the rectangular push block 10 rotates to an upward vertical state. The rectangular push block 10 can push the blade assembly in the upper sliding groove 202 to move towards one side of the box body 2. By using the movable blade 12 in the blade assembly and cooperating with the fixed blade 5 arranged above the fixed tool holder 4, the steel bar above is cut off. Similarly, by pushing the push rod 20 to rotate clockwise, one end of the rectangular push block 10 can be rotated to a downward vertical state. The rectangular push block 10 can push the blade assembly in the lower sliding groove 202 to move towards one side of the box body 2, and cooperate with the fixed blade 5 arranged below the fixed tool holder 4 to cut off the steel bar below. Thus, when one steel bar is cut off, the other steel bar is loaded, saving the time for waiting for the steel bar to be loaded and controlling the cutting length, thereby improving the cutting efficiency of the steel bar. And compared with the existing steel bar cutting machine that controls the separation of the clutch to prevent the horizontal movement of the blade assembly for steel bar loading and controlling the cutting length, it avoids the wear problem caused by the frequent contact and separation of the clutch, and improves the service life of the clutch. Compared with the existing steel bar cutting machine that repairs and maintains the clutch arranged in the box body 2, in this application, after opening the side cover 7, the replacement of the rectangular push block 10 and the blade assembly is more convenient, making the later maintenance more convenient. And the clutch arranged in the box body 2 in this application can also be only used for overload protection during the steel bar cutting process, which can reduce the use cost of the clutch.

[0023] Please refer to Figure 1 , Figure 2 and Figure 8, a limiting support device 21 is fixedly installed on the box body 2 on one side of the front of the fixed tool rest 4. The limiting support device 21 includes two sliding rods 211 movably sleeved on the box body 2. One ends of the two sliding rods 211 are fixedly connected with a limiting support plate 212. A second spring 213 is also movably sleeved on the two sliding rods 211 between the box body 2 and the limiting support plate 212. The other end of the limiting support plate 212 extends to the outside of the box body 2 and is fixedly connected with a baffle 214. Through the elastic force of the second spring 213 and the limiting effect of the baffle 214 on the outside of the box body 2, the side surface of the limiting support plate 212 can be in the same plane as the side surface of the fixed blade 5. Using the limiting support plate 212 to support on the side where the steel bar is cut is beneficial to improving the cutting effect of the steel bar.

[0024] A notch 2121 is formed on the limiting support plate 212. The inner side wall of the notch 2121 does not contact the transmission tube sleeve 15, so as not to affect the rotation of the transmission tube sleeve 15.

[0025] Embodiment 2, as Figure 9 , on the basis of Embodiment 1, the difference from Embodiment 1 is that a servo motor 22 is fixedly installed on the outside of the box body 2. The output rotating shaft of the servo motor 22 is fixedly connected with the end of the transmission tube sleeve 15 far away from the transmission shaft 9. The output rotating shaft driven by the servo motor 22 drives the transmission tube sleeve 15, the transmission shaft 9 and the rectangular push block 10 to rotate. Driven by the servo motor 22, manual operation is not required.

[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A steel bar cutting machine for the distribution steel bars of a precast floor slab, comprising a vehicle body. A box body and a positioning seat are arranged on the top of the vehicle body. A reciprocating push rod is movably arranged in the box body, and the reciprocating push rod is driven by a motor arranged on the top of the vehicle body to horizontally reciprocate. A fixed tool holder is fixedly installed on the positioning seat, and it is characterized in that, Two fixed blades are fixedly installed on the fixed tool rest, which are arranged one above the other. A blade assembly corresponding to each of the two fixed blades is provided in the box body. One end of the reciprocating push rod is fixedly installed with a piston plate. A transmission shaft is movably connected to the side of the piston plate away from the reciprocating push rod. A rectangular push block is fixedly sleeved on the transmission shaft; Control the transmission shaft to drive the rectangular push block to rotate. When cutting the steel bar, make the rectangular push block only push one of the blade assemblies to move. During the steel bar feeding stage, make the rectangular push block rotate to a horizontal state and move between the two blade assemblies.

2. The steel bar cutting machine for the distribution bars of the precast floor slab according to claim 1, characterized in that, An inner groove is formed in the box body near the positioning seat, and two sliding grooves are also formed in the box body on one side of the inner groove. Both sliding grooves communicate with the inner groove. The blade assembly is arranged in the sliding groove.

3. The steel bar cutting machine for the distribution bars of the precast floor slab according to claim 2, characterized in that, A first arc-shaped groove is also formed in the vehicle body in the inner groove. A side cover is fixedly installed on one side of the front of the inner groove. A second arc-shaped groove is formed in the side cover. The piston plate is movably arranged in a circular groove formed by the splicing of the second arc-shaped groove and the first arc-shaped groove.

4. The steel bar cutting machine for the distribution bars of the precast floor slab according to claim 2, characterized in that, The blade assembly includes a movable tool rest movably sleeved in the sliding groove. A movable blade facing the fixed blade is fixedly installed on the movable tool rest. A passive plate is fixedly installed on one side of the movable tool rest. A return spring located above the movable tool rest is fixedly installed on one side of the passive plate. One end of the return spring is movably connected to the inner wall of the inner groove.

5. The steel bar cutting machine for the distribution bars of the precast floor slab according to claim 1, characterized in that, A transmission pipe sleeve is movably sleeved on the box body. One end of the transmission pipe sleeve is movably sleeved with the end of the transmission shaft away from the rectangular push block. A gear box is fixedly installed on the outside of the box body. One end of the gear box away from the rectangular push block extends into the interior of the gear box and is fixedly installed with a first gear. A second gear is also movably sleeved in the interior of the gear box. A positioning rotating shaft is fixedly installed on the second gear. The outside of the positioning rotating shaft meshes with the outside of the first gear. One end of the second gear extends out of the outside of the gear box and is fixedly connected with a push rod.

6. The steel bar cutting machine for the distribution bars of the precast floor slab according to claim 1, wherein A transmission pipe sleeve is movably sleeved on the box body. One end of the transmission pipe sleeve is movably sleeved with the end of the transmission shaft away from the rectangular push block. A servo motor is fixedly installed on the outside of the box body. The output rotating shaft of the servo motor is fixedly connected with the end of the transmission pipe sleeve away from the transmission shaft.

7. The steel bar cutting machine for the distribution bars of the precast floor slab according to claim 5 or 6, characterized in that, A limit support device is fixedly installed on the box body on one side of the front of the fixed tool rest. The limit support device includes two sliding rods movably sleeved on the box body. One end of the two sliding rods is fixedly connected with a limit support plate. A second spring is also movably sleeved on the two sliding rods between the box body and the limit support plate. The other end of the limit support plate extends to the outside of the box body and is fixedly connected with a baffle plate.

8. The steel bar cutting machine for the distribution bars of the precast floor slab according to claim 7, characterized in that, A notch is formed in the limit support plate, and the inner side wall of the notch does not contact the transmission pipe sleeve.

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