CN113319225A

CN113319225A - Steel bar cutting device for constructional engineering

Info

Publication number: CN113319225A
Application number: CN202110613658.XA
Authority: CN
Inventors: 徐莉; 郑绍富
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-08-31

Abstract

The invention discloses a steel bar cutting device for constructional engineering, and relates to the technical field of constructional engineering. It comprises a hand-held casing; the front part of the handheld machine shell is provided with an installation through hole along the left-right direction, and the rear part of the handheld machine shell is fixed with a handle; the right side of the middle part of the handheld machine shell is provided with a gear bin; the front end of the gear bin is communicated with the rear end of the mounting through hole; a synchronous rotary cutting mechanism is arranged inside the mounting through opening; the synchronous rotary cutting mechanism comprises a loading shell arranged in the installation through opening and a supporting bearing fixedly sleeved on the left side of the installation through opening; the left part of the loading shell is fixedly sleeved on the inner side of the supporting bearing, and the right part of the loading shell is fixedly sleeved with a transmission gear ring; the left end and the right end of the loading shell are both concentrically provided with through holes; the right side in the loading shell is rotatably sleeved with a driving ring. The invention has the beneficial effects that: the steel bar connecting device can enable subsequent threading processing to be more convenient, simplify the operation procedures before steel bar connection and improve the working efficiency.

Description

Steel bar cutting device for constructional engineering

Technical Field

The invention relates to the technical field of constructional engineering.

Background

When steel bars are used in constructional engineering, mechanical connection is sometimes needed to be adopted to connect the steel bars end to end in sequence, in order to ensure the connection stability, a steel bar threading machine is generally adopted to thread the end parts of the steel bars, and then a threaded sleeve is adopted to connect the two steel bars together.

Before the reinforcing steel bar is used, the reinforcing steel bar needs to be cut into a proper length, the existing cutting mode generally adopts mechanical shearing or cutting piece rotating cutting, however, the two modes have obvious defects and cause adverse effects on the subsequent mechanical connection process of the reinforcing steel bar.

The mechanical shearing mode is easy to cause the ends of the steel bars to deform seriously, so that the processing of threading is inconvenient, the ends of the two connected steel bars cannot be aligned, and the structural strength is seriously influenced after the two connected steel bars are connected by using a threaded sleeve; although the reinforcing steel bar that adopts the cutting piece to cut off warp less, nevertheless produce marginal burr easily, be unfavorable for mantle fiber processing equally, this kind of mode is owing to be that circular cutting piece realizes the cutting with the curved reinforcing steel bar contact of outer wall, leads to cutting machine control unstability easily in addition, causes cutting piece off tracking (especially hand-held type cutting machine), and it is askew not only to cut the reinforcing steel bar end easily, leads to two reinforcing steel bar ends to align equally, structural strength when influencing the steel bar connection, but also has the potential safety hazard.

Due to the defects of the two modes, at present, after the reinforcing steel bars are cut off, two processes are required, namely a reinforcing steel bar end rounding process (the deformed reinforcing steel bar end is adjusted to be qualified in roundness) and a reinforcing steel bar end surface grinding process, so that the mechanical strength of the integral structure after the reinforcing steel bars are connected is ensured. This results in a cumbersome operation process, long time consumption and an influence on the construction efficiency of the construction project.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a steel bar cutting device for constructional engineering, which can facilitate subsequent threading processing, simplify the operation procedures before steel bar connection and improve the working efficiency.

The technical scheme adopted by the invention is as follows: provided is a reinforcing steel bar cutting device for construction engineering, comprising a hand-held casing; the front part of the handheld machine shell is provided with an installation through hole along the left-right direction, and the rear part of the handheld machine shell is fixed with a handle; the right side of the middle part of the handheld machine shell is provided with a gear bin; the front end of the gear bin is communicated with the rear end of the mounting through hole; a synchronous rotary cutting mechanism is arranged inside the mounting through opening;

the synchronous rotary cutting mechanism comprises a loading shell arranged in the installation through opening and a supporting bearing fixedly sleeved on the left side of the installation through opening; the left part of the loading shell is fixedly sleeved on the inner side of the supporting bearing, and the right part of the loading shell is fixedly sleeved with a transmission gear ring; the left end and the right end of the loading shell are both concentrically provided with through holes; a driving ring is rotatably sleeved at the right side in the loading shell; the right end of the driving ring is correspondingly provided with a plane thread; guide grooves are uniformly distributed at the right end of the loading shell along the circumferential direction; the guide groove is arranged along the radial direction of the loading shell; push blocks are uniformly distributed on the outer side of the penetrating hole at the right end along the circumferential direction; the push blocks and the guide grooves slide in a one-to-one correspondence manner; the push blocks are in corresponding threaded connection with the plane threads; the inner ends of the push blocks are fixed with cutting tool bits; a torsion spring for enabling the push blocks to approach each other is sleeved on the left side inside the loading shell; the left end of the driving ring is connected with the left end of the loading shell through a torsional spring; the loading shell is provided with a toggle mechanism for enabling the push blocks to be away from each other; a transmission mechanism for driving the loading shell to rotate is arranged in the gear bin;

the toggle mechanism comprises arc through grooves which are respectively arranged at the front side and the rear side of the left end of the loading shell; the arc-shaped through groove corresponds to the loading shell in a concentric mode; reference rods are respectively arranged above the arc-shaped through groove on the left side and below the arc-shaped through groove on the right side; the reference rods are all fixed at the left end of the loading shell; the left side and the right side of the left end of the driving ring are respectively fixed with a deflector rod; the deflector rods penetrate through the arc-shaped through grooves in a one-to-one correspondence manner;

the transmission mechanism comprises a working motor fixed at the left end of the handheld shell; a control switch of a working motor is arranged on the handheld shell; the output end of the working motor penetrates into the gear bin rightwards and is fixedly sleeved with a driving gear; the driving gear is meshed with the transmission gear ring.

Further optimizing the technical scheme, the cutting tool bit of the steel bar cutting device for the constructional engineering consists of a supporting part and a cutting part; the inner end of the push block is provided with a slot; the supporting part of the cutting tool bit is correspondingly inserted into the slot; a positioning hole is formed on the supporting part of the cutting tool bit; the push block is inserted with a locking bolt; the locking bolt is in threaded connection with the positioning hole correspondingly.

Further optimize this technical scheme, the cutting portion of cutting tool bit of the reinforcing bar cutting device for building engineering includes the chamfer section of being connected with the supporting part, with the flush joint section of chamfer section inner end connection.

Further optimize this technical scheme, the abrasive disc is all fixed with at both ends about the hand-held type casing of the reinforcing bar cutting device for building engineering.

Further optimizing the technical scheme, the left end of a driving ring of the steel bar cutting device for the constructional engineering is coaxially fixed with a scrap blocking ring; the chip blocking ring is correspondingly sleeved in the penetrating hole at the left end in a rotating way.

The invention has the beneficial effects that:

1. the reinforcing steel bars can penetrate into the inner side of the loading shell through the penetrating holes, the driving gear is meshed with the transmission gear ring, the loading shell is sleeved and fixed in the supporting bearing, and the loading shell can be driven to rotate under the action of the working motor, so that the cutting tool bits uniformly distributed along the circumferential direction can rotate; elasticity through the torsional spring can make the drive ring rotate, then make the plane screw thread can drive all ejector pads and be close to wearing out the hole middle part in step along the guide way, realize the synchronous of cutting tool bit promptly and be close to, make cutting tool bit can be to the synchronous rotary-cut of reinforcing bar, this kind of mode of cutting the reinforcing bar through a plurality of cutting tool bit synchronous revolution, can effectively avoid the easy off tracking of cutting tool bit, the askew problem of easy cutting, make the cutting process balancing good, the stability is high, effectively reduce the operation degree of difficulty, and greatly alleviate the deformation problem of reinforcing bar cutting rear end portion.

2. The supporting part of the cutting tool bit is correspondingly inserted into the slot and can be fixed with the push block through the locking bolt, so that the cutting tool bit is convenient to install and replace; the cutting portion of the cutting tool bit comprises a chamfer section connected with the supporting portion and a flat cutting section connected with the inner end of the chamfer section, the end edge of the steel bar after being cut is provided with a chamfer through the chamfer section, the problem of edge burrs is effectively solved, the mantle fiber machining process and the installation process of the thread sleeve are more convenient, the end face after the steel bar is cut can be well leveled through the flat cutting section, and the alignment between the ends of the steel bar is convenient.

3. The end face of the cut steel bar can be further polished through the grinding piece, so that the flatness of the end face is improved; the scrap blocking ring can effectively block scrap iron generated during cutting, so that the scrap iron is not easy to enter the loading shell.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the left side view of FIG. 1;

fig. 3 is an exploded view of the synchronous rotary cutting mechanism;

FIG. 4 is an exploded view of the interior of the loading housing;

FIG. 5 is a schematic view of the present invention in use with a sanding head;

fig. 6 is a schematic view of the state of the reinforcing bars inside the threaded sleeve.

In the figure, 1, a hand-held casing; 2. installing a through opening; 3. a handle; 4. a gear chamber; 5. loading a shell; 6. a support bearing; 7. a transmission gear ring; 8. an outlet hole is formed; 9. a drive ring; 10. a planar thread; 11. a guide groove; 12. a push block; 13. a cutting bit; 14. a torsion spring; 15. an arc-shaped through groove; 16. a reference bar; 17. a deflector rod; 18. a working motor; 19. a control switch; 20. a driving gear; 21. a support portion; 22. a cutting portion; 23. a slot; 24. positioning holes; 25. a locking bolt; 26. a chamfer section; 27. cutting into sections; 28. grinding; 29. a chip blocking ring; 30. polishing the cutter head; 31. reinforcing steel bars; 32. a threaded sleeve.

Detailed Description

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

As shown in fig. 1, the reinforcing bar cutting apparatus for construction engineering includes a hand-held casing 1; the front part of the handheld machine shell 1 is provided with an installation through hole 2 along the left-right direction, and the rear part of the handheld machine shell 1 is fixed with a handle 3; the right side of the middle part of the handheld machine shell 1 is provided with a gear bin 4; the front end of the gear bin 4 is communicated with the rear end of the mounting through hole 2; the inside synchronous rotary-cut mechanism that is provided with of installation opening 2.

As shown in fig. 2-4, the synchronous rotary-cut mechanism includes a loading shell 5 disposed inside the installation port 2, and a supporting bearing 6 sleeved and fixed on the left side inside the installation port 2; the left part of the loading shell 5 is fixedly sleeved on the inner side of the supporting bearing 6, and the right part of the loading shell 5 is fixedly sleeved with a transmission toothed ring 7; the left end and the right end of the loading shell 5 are both concentrically provided with an outlet hole 8; a driving ring 9 is sleeved on the right side inside the loading shell 5 in a rotating manner; the right end of the driving ring 9 is correspondingly provided with a plane thread 10; guide grooves 11 are uniformly distributed at the right end of the loading shell 5 along the circumferential direction; the guide groove 11 is arranged along the radial direction of the loading shell 5; push blocks 12 are uniformly distributed on the outer side of the penetrating hole 8 at the right end along the circumferential direction; the push blocks 12 and the guide grooves 11 slide correspondingly one to one; the push blocks 12 are in corresponding threaded connection with the plane threads 10; the inner ends of the push blocks 12 are fixed with cutting tool bits 13; a torsion spring 14 for enabling the pushing blocks 12 to approach each other is sleeved on the left side inside the loading shell 5; the left end of the driving ring 9 is connected with the left end of the loading shell 5 through a torsion spring 14; the loading shell 5 is provided with a toggle mechanism for enabling the push blocks 12 to be away from each other; a transmission mechanism for driving the loading shell 5 to rotate is arranged in the gear chamber 4.

The toggle mechanism comprises arc through grooves 15 which are respectively arranged at the front side and the rear side of the left end of the loading shell 5; the arc-shaped through groove 15 corresponds to the loading shell 5 in a concentric manner; a reference rod 16 is respectively arranged above the arc-shaped through groove 15 on the left side and below the arc-shaped through groove 15 on the right side; the reference rods 16 are all fixed at the left end of the loading shell 5; a deflector rod 17 is respectively fixed on the left side and the right side of the left end of the driving ring 9; the shift levers 17 correspondingly penetrate through the arc-shaped through grooves 15.

The transmission mechanism comprises a working motor 18 fixed at the left end of the handheld machine shell 1; a control switch 19 of a working motor 18 is arranged on the hand-held machine shell 1; the output end of the working motor 18 penetrates into the gear bin 4 rightwards and is fixedly sleeved with a driving gear 20; the driving gear 20 is in meshed connection with the transmission gear ring 7.

The cutting bit 13 is composed of a support portion 21 and a cutting portion 22; the inner end of the push block 12 is provided with a slot 23; the supporting part 21 of the cutting bit 13 is correspondingly inserted into the slot 23; a positioning hole 24 is formed on the supporting part 21 of the cutting bit 13; a locking bolt 25 is inserted on the pushing block 12; the locking bolt 25 is correspondingly in threaded connection with the positioning hole 24; the cutting portion 22 of the cutting bit 13 includes a chamfered section 26 connected to the support portion 21, and a flat cutting section 27 connected to an inner end of the chamfered section 26; the upper end and the lower end of the handheld machine shell 1 are both fixed with abrasive discs 28; a chip blocking ring 29 is coaxially fixed at the left end of the driving ring 9; the chip blocking ring 29 is correspondingly sleeved in the penetrating hole 8 at the left end in a rotating manner.

Firstly, the reference rod 16 is held and the deflector rod 17 is shifted to rotate the driving ring 9, and the push block 12 is relatively far away from a certain distance through the rotation of the plane thread 10, so that a space is left between the cutting bits 13, and the reinforcing steel bars 31 can be conveniently penetrated between the cutting bits 13; subsequently, the operation of the shift lever 17 is released, the drive ring 9 is reversed by the rebound of the torsion spring 14, the cutter bit 13 is relatively close, and the reinforcing bar 31 is sandwiched in the middle of the through hole 8; then, the working motor 18 is operated by the control switch 19 (the working motor 18 can be powered by an external power supply), the driving gear 20 can drive the transmission gear ring 7 to rotate, the whole loading shell 5 can rotate in the supporting bearing 6, and the cutting head 13 can rotate around the reinforcing steel bar 31 in a rotary manner (the cutting head 13 can synchronously and gradually cut into the reinforcing steel bar 31 under the action of the torsion spring 14).

When the rotary cutting is finished, namely the cutting tool bits 13 are in contact with each other, the reinforcing steel bars 31 are completely cut off in a perfect condition, however, the process is influenced by the precision of the cutting tool bits 13, a little of residual connection is possibly remained on the reinforcing steel bars 31 finally, the reinforcing steel bars 31 can be easily broken off by bare hands (even the reinforcing steel bars 31 can be automatically broken off by the gravity), and then the broken residual is polished to be flat by the abrasive discs 28, so that the operation is simple.

According to the technical scheme, the steel bars 31 are cut by synchronously rotating the plurality of cutting tool bits 13, the stability is good, the plurality of cutting tool bits 13 which are uniformly distributed along the circumferential direction are combined, the problems of shaking, deviation and oblique cutting during cutting are not easy to occur, and an operator can hold the steel bars by hands and operate the steel bars more easily; in addition, the traditional cutting mode is only to cut the reinforcing steel bars 31 from an angle, the reinforcing steel bars 31 are unbalanced in stress, and therefore are easy to deform, and the circumferential rotary cutting mode of the technical scheme is to cut the reinforcing steel bars through circumferential uniform angles, so that the stress of the cutting positions of the reinforcing steel bars 31 is more balanced, the problem that the end parts of the reinforcing steel bars 31 are seriously deformed after being cut is solved, and the roundness of the cut end parts is ensured. Obviously, through the operation of this technical scheme, can simplify subsequent 31 tip rounding processes of reinforcing bar and 31 terminal surface grinds the flat process, improve work efficiency.

As shown in fig. 4, the cutting portion 22 of the cutting head 13 can adopt a structure having a chamfer section 26 and a flat cutting section 27, which not only can make the end face of the cut steel bar 31 have good flatness and facilitate the alignment between the ends of the steel bar 31, but also can make the edge of the end of the cut steel bar 31 have a certain chamfer (the corresponding cutting head 13 can be replaced according to the diameter of the steel bar 31 to ensure that the chamfer is proper), as shown in fig. 6, not only can effectively remove the problem of edge burrs, but also can make the threading process and the installation process of the threaded sleeve 32 more convenient.

In the present technical solution, the cutting head 13 can be replaced according to the requirement, for example, the cutting head 13 is replaced by a grinding head 30, as shown in fig. 5; can polish reinforcing bar 31 surface or all the other cylindrical by the piece surface of polishing through the tool bit 30 of polishing, the circularity of the piece of polishing can effectively be improved to this kind of mode of circumference synchronous revolution polishing simultaneously.

Claims

1. The utility model provides a reinforcing bar cutting device that building engineering used which characterized in that: comprises a hand-held casing; the front part of the handheld machine shell is provided with an installation through hole along the left-right direction, and the rear part of the handheld machine shell is fixed with a handle; the right side of the middle part of the handheld machine shell is provided with a gear bin; the front end of the gear bin is communicated with the rear end of the mounting through hole; a synchronous rotary cutting mechanism is arranged inside the mounting through opening;

2. The reinforcing bar cutting apparatus for construction engineering according to claim 1, wherein: the cutting tool bit consists of a supporting part and a cutting part; the inner end of the push block is provided with a slot; the supporting part of the cutting tool bit is correspondingly inserted into the slot; a positioning hole is formed on the supporting part of the cutting tool bit; the push block is inserted with a locking bolt; the locking bolt is in threaded connection with the positioning hole correspondingly.

3. The reinforcing bar cutting apparatus for construction engineering according to claim 2, wherein: the cutting part of the cutting tool bit comprises a chamfer section connected with the supporting part and a flat cutting section connected with the inner end of the chamfer section.

4. A reinforcing bar cutting apparatus for construction work according to claim 3, wherein: the upper end and the lower end of the handheld casing are both fixed with grinding plates.

5. The reinforcing bar cutting apparatus for construction engineering according to claim 4, wherein: a chip blocking ring is coaxially fixed at the left end of the driving ring; the chip blocking ring is correspondingly sleeved in the penetrating hole at the left end in a rotating way.