Cutting device for manufacturing reinforced concrete prefabricated frame

Abstract

The invention discloses a cutting device for manufacturing a reinforced concrete prefabricated frame, and relates to the technical field of disc type cutting machines, the cutting device comprises a disc type cutting machine body, one end of the outer surface of the disc type cutting machine body is rotatably connected with a supporting chassis, the top of the supporting chassis is fixedly provided with a gradienter, and the bottom of the supporting chassis is slidably connected with a guide rail; the two guide rails are symmetrically arranged; the slow cutting of the reinforced concrete prefabricated frame is realized by limiting the manual over-fast movement of the disc type cutting machine body, and the slow cutting is beneficial to the realization of a smoother cutting surface because the lower speed allows the blade to be more fully contacted with the material, thereby realizing more uniform cutting force distribution, and improving the cutting efficiency of the reinforced concrete prefabricated frame. The uniform force distribution reduces the tearing and crushing of materials, so that the cutting surface is neater and smoother, meanwhile, the movement speed of the disc type cutting machine body is prevented from being too high, and the cutting precision of the reinforced concrete prefabricated frame is prevented from being influenced by the deviation of the blade in the cutting process.

Description

Technical Field

[0001] The invention relates to the technical field of disc cutters, in particular to a cutting device for manufacturing reinforced concrete prefabricated frames. Background Art

[0002] In the prior art, a diamond disc cutter or a diamond wire saw cutter is often used to cut the reinforced concrete prefabricated frame, and the reinforced concrete prefabricated frame is cut on the basis of complying with the safety operation standards of the construction site; However, in the prior art, when using a diamond disc cutter to cut reinforced concrete prefabricated frames, the operator is required to manually move the diamond disc cutter. In addition, during the cutting process, since the cutting progress needs to be manually controlled, the operator is prone to errors in controlling the cutting speed and is unable to adjust the cutting speed according to the hardness and thickness of the cutting material and the feedback during the cutting process. This will result in the need to avoid the diamond disc cutter from moving too fast during the cutting process. Too fast a moving speed will result in an uneven cutting surface of the reinforced concrete prefabricated frame. When the diamond disc cutter moves at too fast a speed, the contact between the blade and the concrete becomes more intense, generating greater mechanical vibration and impact force. This strong mechanical action will result in an uneven cutting surface and may even cause cracks or breakage. Secondly, the excessive movement of the diamond disc cutter will also cause the blade to be subjected to a reverse impact force, causing the cutting track of the blade to shift, affecting the cutting accuracy of the reinforced concrete prefabricated frame. To solve this problem, we propose a cutting device for manufacturing reinforced concrete prefabricated frames to solve the above problems. Summary of the invention

[0003] Technical problem to be solved: In view of this, and aiming at the deficiencies in the prior art, the present invention provides a cutting device for manufacturing a reinforced concrete prefabricated frame to solve the problems raised in the above-mentioned background technology.

[0004] Technical solution: To achieve the above-mentioned purpose, the present invention provides the following technical solution: a cutting device for manufacturing reinforced concrete prefabricated frames, comprising a disc-type cutting machine body, one end of the outer surface of the disc-type cutting machine body is rotatably connected to a supporting chassis, a level is fixedly installed on the top of the supporting chassis, and a guide rail is slidably connected to the bottom of the supporting chassis, two guide rails are symmetrically arranged, and an overspeed prevention component is also symmetrically arranged on both sides of the supporting chassis; The anti-overspeed component includes fixed blocks symmetrically fixedly connected to both sides of the supporting chassis, the interior of the fixed blocks are rotatably connected with a rotating shaft, both ends of the rotating shaft pass through the fixed blocks and extend to the outside of the fixed blocks, the middle outer surface of the rotating shaft is fixedly connected with a roller, the roller is provided with a groove, the inner wall of the roller groove is fixedly connected with a tooth block in a ring array, the middle outer surface of the rotating shaft is sleeved with a limiting ring, the inside of the limiting ring is provided with limiting grooves in a ring shape and equidistantly, the inside of the limiting groove is slidably connected with a clamping block, and the end of the clamping block close to the center of the limiting ring is fixedly connected with a pulling spring.

[0005] Preferably, the limiting ring is arranged inside the roller, and the gap formed between the tooth blocks arranged equidistantly in an annular shape is located on the movement trajectory of the clamping block.

[0006] Preferably, the outer surface of the roller is provided with vertical grooves at equal intervals in a ring shape, and the outer surface of the roller is provided with transverse grooves, which are cross-arranged with the vertical grooves. The cross-sections of the vertical grooves are trapezoidal, which are wide at the top and narrow at the bottom. The cross-sections of the transverse grooves are ring-shaped trapezoids, and the trapezoids are wide at the top and narrow at the bottom.

[0007] Preferably, the cutting device for manufacturing reinforced concrete prefabricated frames further comprises buffer components respectively arranged on the two sets of overspeed prevention components; The buffer assembly includes movable grooves respectively opened on the adjacent sides of the two guide rails, protrusions are fixedly connected inside the movable grooves at equal distances, fixing parts are symmetrically fixedly connected to the outer surfaces of both ends of the rotating shaft, metal rods are fixedly connected to the outer surfaces of the fixing parts, two metal rods are symmetrically arranged, and a buffer spring is fixedly connected between the adjacent sides of the two metal rods.

[0008] Preferably, the horizontal cross-section of the symmetrically arranged metal rods is in an eight-shape, and the distance between the ends of the two metal rods close to the fixing member is smaller than the ends away from the fixing member, and the ends of the metal rods away from the fixing member are both located between two adjacent protrusions on the same side.

[0009] Preferably, the cutting device for manufacturing a reinforced concrete prefabricated frame further comprises a positioning assembly disposed on the supporting chassis; The positioning assembly includes a rotating part fixedly connected to the disc cutter body, a gear fixedly connected to the outer surface of the rotating part, a push rod rotatably connected to the outer surface of one side of the supporting chassis, a latch tooth fixedly connected to the top side of the push rod, and a telescopic spring fixedly connected to the outer surface of the push rod.

[0010] Preferably, the latching tooth is located on a side of the push rod close to the gear, and the latching tooth is meshed with the gear.

[0011] Preferably, one end of the telescopic spring away from the push rod is fixedly connected to the supporting chassis, and the push rod is initially set to a tilted state.

[0012] Beneficial effects: Compared with the prior art, the present invention provides a cutting device for manufacturing a reinforced concrete prefabricated frame, which has the following beneficial effects: By limiting the manual movement of the disc cutter body too fast, slow cutting of the reinforced concrete prefabricated frame can be achieved. Slow cutting helps to achieve a smoother cutting surface because the slower speed allows the blade to contact the material more fully, thereby achieving a more uniform cutting force distribution. This uniform force distribution reduces the tearing and breaking of the material, making the cutting surface neater and smoother. At the same time, preventing the disc cutter body from moving too fast can also reduce the reverse force on the blade caused by the fast movement speed, avoiding the blade from offsetting during the cutting process, affecting the cutting accuracy of the reinforced concrete prefabricated frame; By moving the disc cutter body at a slower speed, the operator can more easily observe and monitor the cutting process, which helps to promptly detect and solve any possible problems such as blade blockage or material deviation. In addition, the slower speed also provides the operator with more time to adjust the cutting parameters to adapt to changing working conditions. Through the cooperation of the metal rod and the protrusion, the disc cutter body can maintain a state of approximately uniform motion during the movement process, avoiding the setting shaking caused by the change of the disc cutter body speed causing the cutting track to deviate, and the uniform speed movement can prevent the operator from forcibly feeding the knife when cutting the reinforced concrete prefabricated frame, and the operator can always pay attention to the force change of the disc cutter body when cutting the reinforced concrete prefabricated frame, avoiding the disc cutter body cutting blade from getting stuck; By fixing the cutting angle of the disc cutter body, the relative position between the blade and the material being cut can be kept constant, thereby reducing the cutting deviation caused by angle changes. This stability helps to achieve more precise size control. The fixed angle can reduce the vibration of the blade during the cutting process and improve the flatness and smoothness of the cutting surface. By setting gears, push rods, latch teeth and telescopic springs, the disc cutter body can be fixed after rotating to any angle, and the disc cutter body will not tend to rotate when not affected by external forces, which is conducive to the stable use of the disc cutter body and avoids the situation where the cutting angle of the disc cutter body changes after the staff works for a long time, and avoids affecting the flatness of the cutting surface of the reinforced concrete prefabricated frame. In addition, the above-mentioned setting can also fix the disc cutter body at any angle, which is convenient for adapting to the cutting of reinforced concrete prefabricated frames of different thicknesses, thereby increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the cutting device of the present invention; Figure 2 For the present invention Figure 1 Another perspective structural diagram of; Figure 3 It is a schematic diagram of the connection relationship of the metal rod of the present invention; Figure 4 It is a schematic diagram of the connection relationship at the fixing block of the present invention; Figure 5 It is a schematic diagram of the connection relationship of the roller of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the structure enlargement in the middle; Figure 7 It is a schematic diagram of the internal cross-section of the limiting ring of the present invention; Figure 8 It is a schematic diagram of the connection relationship of the rotating part of the present invention.

[0014] In the figure: 11, disc cutting machine body; 12, supporting chassis; 13, level; 14, guide rail; 21. Fixed block; 22. Rotating shaft; 23. Roller; 24. Tooth block; 25. Limiting ring; 26. Limiting groove; 27. Block; 28. Pull spring; 31. moving groove; 32. protrusion; 33. fixing piece; 34. metal rod; 35. buffer spring; 41. Rotating part; 42. Gear; 43. Push rod; 44. Clamping tooth; 45. Telescopic spring. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Embodiments of the present invention: Please refer to Figure 1 and Figure 2 The effects achieved by this embodiment are as follows: a cutting device for manufacturing reinforced concrete prefabricated frames, comprising a disc-type cutting machine body 11, one end of the outer surface of the disc-type cutting machine body 11 is rotatably connected to a supporting chassis 12, specifically, a lug is fixedly connected to the supporting chassis 12, the disc-type cutting machine body 11 is hinged to the lug through a rotating shaft, a horizontal groove is provided on the supporting chassis 12, and the horizontal groove is located on the center line of the supporting chassis 12, a level 13 is fixedly installed on the top of the supporting chassis 12, and a guide rail 14 is slidably connected to the bottom of the supporting chassis 12, and two guide rails 14 are symmetrically arranged; a slide groove with a size matching the guide rail 14 is provided at the bottom of the supporting chassis 12, and when the guide rail 14 is placed on the upper surface of the concrete prefabricated frame to be cut, the guide rail 14 can be pressed by a counterweight block to limit the position of the guide rail 14, and the specific counterweight block can be a rectangular block made of steel.

[0017] See also Figures 1 to 5 and Figure 6 As shown, the cutting device for manufacturing reinforced concrete prefabricated frames also includes an anti-overspeed component symmetrically arranged on both sides of the supporting chassis 12; the anti-overspeed component includes a fixed block 21 symmetrically fixedly connected to both sides of the supporting chassis 12, the interior of the fixed block 21 is rotatably connected with a rotating shaft 22, both ends of the rotating shaft 22 pass through the fixed block 21 and extend to the outside of the fixed block 21, the middle outer surface of the rotating shaft 22 is fixedly connected with a roller 23, the roller 23 is provided with a groove, the inner wall of the groove of the roller 23 is fixedly connected with a tooth block 24 in an annular array, the middle outer surface of the rotating shaft 22 is sleeved with a limiting ring 25, the outer surface of the rotating shaft 22 and the inner surface of the limiting ring 25 are both set to a rough plane, the limiting ring 25 is provided with a limiting groove 26 in an annular shape and equidistantly, the limiting groove 26 is slidably connected with a clamping block 27, the clamping block 27 is fixedly connected with a pulling spring 28 at one end close to the center of the limiting ring 25, and the pulling spring 28 is fixedly connected to the groove wall of the limiting groove 26 at one end away from the clamping block 27.

[0018] The limiting ring 25 is arranged inside the roller 23 , and the gaps formed between the tooth blocks 24 which are arranged equidistantly in an annular shape are located on the movement track of the clamping block 27 .

[0019] Among them, the outer surface of the roller 23 is provided with vertical grooves at equal intervals in a ring shape, and the outer surface of the roller 23 is provided with transverse grooves, which are cross-arranged with the vertical grooves. The cross-sections of the vertical grooves are all trapezoidal, which are wide at the top and narrow at the bottom. The cross-section of the transverse grooves is a ring-shaped trapezoid, and the trapezoid is wide at the top and narrow at the bottom. The outer surface of the bottom of the roller 23 is flush with the bottom surface of the guide rail 14.

[0020] For further examples: see Figure 3 and Figure 2 The cutting device for manufacturing reinforced concrete prefabricated frames also includes buffer components respectively arranged on the two groups of anti-overspeed components; the buffer components include movable grooves 31 respectively opened on the side close to the two guide rails 14, and the movable grooves 31 are evenly fixedly connected with protrusions 32 inside, and the outer surfaces of both ends of the rotating shaft 22 are symmetrically fixedly connected with fixing members 33, and the outer surfaces of the fixing members 33 are fixedly connected with metal rods 34, and two metal rods 34 are symmetrically arranged, and a buffer spring 35 is fixedly connected between the adjacent sides of the two metal rods 34.

[0021] Among them, the metal rod 34 is configured as a deformable metal, and the horizontal cross-section of the symmetrically arranged metal rod 34 is in an eight-shaped shape, and the distance between the two metal rods 34 close to the fixing part 33 is smaller than the distance between the two ends away from the fixing part 33. The ends of the metal rods 34 away from the fixing part 33 are both located between two adjacent protrusions 32 on the same side, and the contact surfaces of the metal rods 34 and the tooth blocks 24 are both rounded.

[0022] For further examples, see Figure 5 , Figure 6 and Figure 8The cutting device for manufacturing prefabricated reinforced concrete frames also includes a positioning assembly arranged on the supporting chassis 12; the positioning assembly includes a rotating member 41 fixedly connected to the rotating shaft of the disc cutting machine body 11, a gear 42 is fixedly connected to the outer surface of the rotating member 41, a push rod 43 is rotatably connected to the lug on the upper surface of the supporting chassis 12, a latch tooth 44 is fixedly connected to the side of the push rod 43 close to the gear 42, and a telescopic spring 45 is fixedly connected to the outer surface of the push rod 43.

[0023] The latching teeth 44 are meshed with the gear 42 , and one end of the telescopic spring 45 away from the push rod 43 is fixedly connected to the supporting chassis 12 , and the push rod 43 is initially set to a tilted state.

[0024] The working process and principle of the overall content of the above embodiment are as follows: Installation of the guide rail 14: The staff uses existing equipment (such as a level 13, ink fountain, etc.) to draw the line to be cut according to the pre-designed size on the reinforced concrete prefabricated frame after pouring. Then the staff passes the two guide rails 14 through the upper surface of the reinforced concrete prefabricated frame to be cut. The actual length of the guide rails 14 can be set according to the needs, and counterweights are placed at both ends of the guide rails 14 so that the guide rails 14 are limited on the concrete prefabricated frame. During the installation process, it is necessary to ensure that the line to be cut on the reinforced concrete is located in the middle of the two guide rails 14, and the overall length of the guide rail 14 is greater than the length of the reinforced concrete prefabricated frame. After the rail 14 is installed, the staff places the disc cutter body 11 and the supporting chassis 12 on the guide rail 14, so that the slide groove opened at the bottom of the supporting chassis 12 is engaged with the guide rail 14, maintaining a fitting sliding connection between the supporting chassis 12 and the guide rail 14, and ensures that the supporting chassis 12 and the disc cutter are in a horizontal state through the spirit level 13 installed on the supporting chassis 12. Since a horizontal groove is opened on the supporting chassis 12, and the horizontal groove is located on the center line of the supporting chassis 12, after the disc cutter body 11 is installed, the cutting blade in the disc cutter body 11 is located directly above the line to be cut.

[0025] Preventing the prefabricated reinforced concrete frame from moving too fast during cutting: After the disc cutter body 11 is installed, the staff starts the disc cutter body 11 by holding the handle on the disc cutter and through the switch installed on the disc cutter body 11, so that the cutting blade rotates (it should be noted that the starting procedures of the above-mentioned disc cutter body 11 are all existing technologies, so they are not described in detail); then the staff presses down the disc cutter body 11 with the connection point between the disc cutter body 11 and the supporting chassis 12 as a fulcrum, so that the cutting blade passes through the horizontal groove opened on the supporting chassis 12 and contacts the line to be cut on the prefabricated reinforced concrete frame, and cuts the prefabricated reinforced concrete frame according to the predetermined size. During the cutting process, the staff manually pushes the disc cutter body 11 and the supporting chassis 12 to move on the guide rail 14 to cut the prefabricated reinforced concrete frame.

[0026] In the above process, the supporting chassis 12 moves horizontally on the guide rail 14. Since the roller 23 is rotatably connected to the fixed block 21 through the rotating shaft 22, and the fixed block 21 is fixedly connected to the supporting chassis 12, the outer surface of the bottom of the roller 23 is flush with the bottom surface of the guide rail 14. Therefore, when the supporting chassis 12 moves, the roller 23 will be in a rotating state due to the movement of the supporting chassis 12 and the friction between itself and the upper surface of the reinforced concrete prefabricated frame. In the slow speed or normal speed state, the block 27 is located in the limit groove 26 on the limit ring 25, and the block 27 does not contact the tooth block 24. When the moving speed of the supporting chassis 12 suddenly increases, that is, the disc cutting machine body 11 manually operated by the staff accelerates and is in an unstable state, the speed of the roller 23 moving with the supporting chassis 12 will be accelerated synchronously in this state, and the speed of the rotating shaft 22 fixedly connected to the roller 23 will also be accelerated synchronously. At the same speed, compared with the roller 23, the centrifugal force on the rotating shaft 22 and the object set on the limit ring 25 on the outer surface of the rotating shaft 22 is greater than that on the roller 23; According to the principle of conservation of angular momentum, when no external torque is applied, the angular momentum of the object is conserved. At this time, the rotation speed can be increased by increasing the angular momentum or reducing the moment of inertia. For example, the object is made into a shape with low moment of inertia, such as a cylindrical rod with a very small radius. In the above setting, the rotating shaft 22 and the limiting ring 25 can be regarded as a cylindrical rod with a very small radius to increase the angular velocity of the block 27 located on the limiting ring 25. According to the centrifugal force calculation formula, F=m*ω^2*r, where F represents the magnitude of the centrifugal force, m is the mass of the object, ω is the angular velocity, and r is the rotation radius. When the angular velocity of the object is accelerated, the centrifugal force on the object will increase accordingly. The centrifugal force on the object inside the roller 23 is amplified by the setting of the rotating shaft 22 and the limiting ring 25. Therefore, when the moving speed of the supporting chassis 12 is suddenly accelerated, the speed of the rotating shaft 22 and the roller 23 will also be suddenly accelerated. By amplifying the centrifugal force on the objects inside the roller 23, since the relative surfaces between the rotating shaft 22 and the limiting ring 25 are relatively rough, the rotating shaft 22 will drive the limiting ring 25 to rotate synchronously through the friction force. At this time, the block 27 slidably connected in the limiting groove 26 will gradually move away from the center position of the limiting ring 25 and move toward the direction of the tooth block 24. In this process, the movement of the block 27 will gradually stretch the pulling spring 28. Since the gap formed between the adjacent tooth blocks 24 is located on the movement trajectory of the block 27, the movement of the block 27 will gradually get stuck in the gap formed between the adjacent tooth blocks 24. In the gap, the friction between the block 27 and the tooth block 24 is reduced to act in the reverse direction on the rotating shaft 22, and the rotation speed of the roller 23 is reduced through the rotating shaft 22. By reducing the rotation speed of the roller 23, the movement of the supporting chassis 12 and the disc-type cutting machine body 11 is indirectly affected, and the movement speed of the supporting chassis 12 and the disc-type cutting machine body 11 is slowed down. When the movement speed of the supporting chassis 12 and the disc-type cutting machine body 11 is suddenly accelerated to the extent of affecting the cutting of the reinforced concrete prefabricated frame, the block 27 will be stuck in the gap between the tooth blocks 24, restricting the roller 23, and maximally affecting the movement of the roller 23, thereby limiting the movement speed of the supporting chassis 12 and the disc-type cutting machine body 11.

[0027] It should be noted that the structures such as the roller 23 , the rotating shaft 22 and the limiting ring 25 are symmetrically arranged on both sides of the supporting chassis 12 , so the left and right movement of the disc cutting machine body 11 will be affected by the above structures.

[0028] By limiting the manual movement of the disc cutter body 11 which is too fast, slow cutting of the reinforced concrete precast frame can be achieved. Slow cutting helps to achieve a smoother cutting surface because the slower speed allows the blade to contact the material more fully, thereby achieving a more uniform cutting force distribution. This uniform force distribution reduces the tearing and breaking of the material, making the cutting surface neater and smoother.

[0029] At the same time, when the disc cutter body 11 moves at a slower speed, it is easier for the operator to observe and monitor the cutting process, which helps to promptly detect and solve any possible problems, such as blade blockage or material deviation. In addition, the slower speed also provides the operator with more time to adjust the cutting parameters to adapt to changing working conditions.

[0030] Furthermore, since the outer surface of the roller 23 is provided with vertical grooves in a circular shape and are equidistantly spaced, and the outer surface of the roller 23 is provided with transverse grooves, the transverse grooves and the vertical grooves are cross-arranged, and the cross-sections of the vertical grooves are all trapezoidal, which are wide at the top and narrow at the bottom, and the cross-sections of the transverse grooves are annular trapezoids, and the trapezoids are wide at the top and narrow at the bottom, therefore, during the rotation of the roller 23, the debris and chips flying around generated during the cutting of the cutting blade and the reinforced concrete will not affect the rotation of the roller 23, and the transverse grooves and the vertical grooves are both arranged with trapezoidal cross-sections, so that the roller 23 can disperse the pressure more evenly when bearing loads, thereby enhancing the overall structural strength.

[0031] Uniform movement of the disc cutter body 11: In the above process of preventing the disc cutter body 11 from moving too fast, the fixed block 21 will move synchronously with the movement of the roller 23 through the rotation connection with the rotating shaft 22, and drive the metal rod 34 fixedly connected to the fixing member 33 to move synchronously; since the horizontal cross-section of the symmetrically arranged metal rods 34 is in an eight-shaped shape, and the distance between the ends of the two metal rods 34 close to the fixing member 33 is smaller than the end away from the fixing member 33, the ends of the metal rods 34 away from the fixing member 33 are both located between two adjacent protrusions 32 on the same side, so the metal rods 34 will always be in contact with the protrusions 32 set inside the guide rail 14 during the movement, and the contact surfaces of the metal rods 34 and the tooth block 24 are both rounded, so the movement of the metal rods 34 will be stuck in the gap between adjacent protrusions 32, and as the metal rods 34 move, they gradually slide out of the gap and enter the gap between the next group of protrusions 32.

[0032] During the above-mentioned movement process, since the metal rod 34 is set as a deformable metal, the metal rod 34 will be deformed by the resistance force of the protrusion 32 during the movement, and the buffer spring 35 arranged between the metal rod 34 will be compressed during the deformation process. After the metal rod 34 is separated from the resistance of the protrusion 32, the buffer spring 35 returns to its initial state, forcing the metal rod 34 to return to its initial state and re-contact with the gap between adjacent protrusions 32, and repeats the above-mentioned process. Since the metal rod 34 and other structures are symmetrically arranged on the two rotating shafts 22, the left and right movements of the disc cutting machine body 11 will be affected by the metal rod 34 and the protrusion 32. When the moving speed of the disc cutting machine body 11 is too fast, the collision speed and frequency between the metal rod 34 and the protrusion 32 will gradually increase. This increase in collision speed and frequency will be fed back to the operator of the handheld disc cutting machine body 11 through the vibration generated between the metal rod 34 and the protrusion 32, reminding the operator that the moving speed is not stable. At the same time, this feedback is also beneficial for the operator to keep the disc cutting machine body 11 moving at a uniform speed.

[0033] Through the cooperation of the metal rod 34 and the protrusion 32, the disc cutter body 11 can maintain a state of approximately uniform motion during the movement, avoiding the deviation of the cutting trajectory caused by the shaking of the facilities caused by the change in the movement speed of the disc cutter body 11. At the same time, the cooperation of the metal rod 34 and the protrusion 32 can prompt the operator whether the disc cutter body 11 is in a uniform speed state during the operation. The protrusion 32 is similar to a damper, and the cooperation with the metal rod 34 can slow down the movement speed of the disc cutter body 11 when the speed is too fast, ensuring the uniform movement of the disc cutter body 11. The uniform movement can prevent the operator from forcing the knife to advance when cutting the reinforced concrete prefabricated frame, and the operator can always pay attention to the force changes of the disc cutter body 11 when cutting the reinforced concrete prefabricated frame to avoid the cutting blade of the disc cutter body 11 from getting stuck.

[0034] Fixing the cutting position of the disc cutter body 11: During the above-mentioned operation of pressing down the disc cutter body 11, due to the fixed connection between the rotating member 41 and the disc cutter body 11, during the pressing down and rotation of the disc cutter body 11, the rotating member 41 will rotate synchronously, and the gear 42 will be driven to rotate synchronously through the fixed connection between the gear 42 and the rotating member 41. Since the gear 42 and the latch 44 are in the initial state, the gear 42 cannot rotate arbitrarily. When it is necessary to rotate, the push rod 43 can be held by hand to turn it in the direction away from the gear 42. The push rod 43 is rotated to move, and drives the latch tooth 44 to disengage from the meshing with the gear 42. During the rotation, the telescopic spring 45 fixed on the push rod 43 is also stretched. Then, the disc cutter body 11 can be pressed down and rotated, and the gear 42 and the rotating member 41 are driven to rotate synchronously. After adjusting the rotation angle of the disc cutter body 11, the push rod 43 is released, and the latch tooth 44 is re-engaged with the gear 42 under the action of the rebound of the telescopic spring 45 and the reverse rotation of the push rod 43, so that the position of the gear 42 is fixed, thereby fixing any angle of the disc cutter body 11 after adjustment.

[0035] By setting the gear 42, the push rod 43, the latch tooth 44 and the telescopic spring 45, the disc cutter body 11 can be fixed after rotating at any angle, and the disc cutter body 11 will not show a tendency to rotate when not affected by external force, which is conducive to the stable use of the disc cutter body 11, and avoids the situation where the cutting angle of the disc cutter body 11 changes after the staff works for a long time, and avoids affecting the flatness of the cutting surface of the reinforced concrete prefabricated frame. In addition, the above-mentioned setting can also fix the disc cutter body 11 at any angle, which is convenient for adapting to the cutting of reinforced concrete prefabricated frames of different thicknesses, thereby increasing the practicality of the device.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting device for manufacturing a reinforced concrete prefabricated frame, comprising a disc-type cutting machine body (11), one end of the outer surface of the disc-type cutting machine body (11) is rotatably connected to a supporting chassis (12), a level (13) is fixedly installed on the top of the supporting chassis (12), and a guide rail (14) is slidably connected to the bottom of the supporting chassis (12), and two guide rails (14) are symmetrically arranged, characterized in that: It also includes an anti-overspeed component symmetrically arranged on both sides of the supporting chassis (12); The overspeed prevention component comprises a fixed block (21) symmetrically fixedly connected to both sides of the supporting chassis (12); a rotating shaft (22) is rotatably connected inside the fixed block (21); two ends of the rotating shaft (22) pass through the fixed block (21) and extend to the outside of the fixed block (21); a roller (23) is fixedly connected to the outer surface of the middle part of the rotating shaft (22); a groove is provided inside the roller (23); a tooth block (24) is fixedly connected to the inner wall of the groove of the roller (23) in the form of an annular array; a limiting ring (25) is sleeved on the outer surface of the middle part of the rotating shaft (22); limiting grooves (26) are provided inside the limiting ring (25) in the form of annular equidistant intervals; a clamping block (27) is slidably connected inside the limiting groove (26); and a pulling spring (28) is fixedly connected to one end of the clamping block (27) close to the center of the limiting ring (25).

2. A cutting device for manufacturing a reinforced concrete prefabricated frame according to claim 1, characterized in that: The limiting ring (25) is arranged inside the roller (23), and the gaps formed between the tooth blocks (24) arranged in an annular manner and at equal intervals are located on the movement track of the clamping block (27).

3. A cutting device for manufacturing a reinforced concrete prefabricated frame according to claim 1, characterized in that: The outer surface of the roller (23) is provided with vertical grooves at equal intervals in an annular shape. The outer surface of the roller (23) is provided with transverse grooves, which are arranged crosswise with the vertical grooves. The cross sections of the vertical grooves are all trapezoidal, which are wide at the top and narrow at the bottom. The cross section of the transverse groove is an annular trapezoid, which is wide at the top and narrow at the bottom.

4. A cutting device for manufacturing a reinforced concrete prefabricated frame according to claim 1, characterized in that: Also included are buffer components respectively arranged on the two sets of overspeed prevention components; The buffer assembly comprises movable grooves (31) respectively provided on adjacent sides of the two guide rails (14), protrusions (32) being fixedly connected at equal intervals inside the movable grooves (31), fixing members (33) being symmetrically fixedly connected to the outer surfaces of both ends of the rotating shaft (22), metal rods (34) being fixedly connected to the outer surfaces of the fixing members (33), two metal rods (34) being symmetrically arranged, and a buffer spring (35) being fixedly connected between adjacent sides of the two metal rods (34).

5. A cutting device for manufacturing a reinforced concrete prefabricated frame according to claim 4, characterized in that: The horizontal cross-section of the symmetrically arranged metal rods (34) is in an eight-shaped shape, and the distance between the ends of the two metal rods (34) close to the fixing member (33) is smaller than the ends away from the fixing member (33), and the ends of the metal rods (34) away from the fixing member (33) are both located between two adjacent protrusions (32) on the same side.

6. A cutting device for manufacturing a reinforced concrete prefabricated frame according to claim 1, characterized in that: Also included is a positioning assembly disposed on the supporting chassis (12); The positioning assembly comprises a rotating member (41) fixedly connected to a disc-type cutting machine body (11); a gear (42) is fixedly connected to the outer surface of the rotating member (41); a push rod (43) is rotatably connected to the outer surface of one side of the supporting chassis (12); a latching tooth (44) is fixedly connected to one side of the top end of the push rod (43); and a telescopic spring (45) is fixedly connected to the outer surface of the push rod (43).

7. A cutting device for manufacturing a reinforced concrete prefabricated frame according to claim 6, characterized in that: The latching tooth (44) is located on a side of the push rod (43) close to the gear (42), and the latching tooth (44) is meshed with the gear (42).

8. A cutting device for manufacturing a reinforced concrete prefabricated frame according to claim 7, characterized in that: One end of the telescopic spring (45) away from the push rod (43) is fixedly connected to the supporting chassis (12), and the push rod (43) is initially set in an inclined state.

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