CN116393617A - Portable cable bending tool - Google Patents

Abstract

The application relates to a portable cable bending tool, which relates to the technical field of cable processing and comprises a bracket, a workbench, a guide assembly and a bending assembly, wherein the guide assembly and the bending assembly are arranged on the workbench; the workbench is connected with the bracket; the guide assembly comprises a first guide post and a second guide post, the first guide post and the second guide post are symmetrically arranged and are both in rotary connection with the workbench, the second guide post is in sliding connection with the workbench, the second guide post can be close to or far from the first guide post, and a locking piece is arranged on the second guide post and used for fixing the second guide post; the bending assembly comprises a bending column and a bending arm, the bending column is arranged on one side of the first guide column and is rotationally connected with the workbench, a plurality of reducing plates are circumferentially arranged on the bending column, the plurality of reducing plates are arranged on the outer side wall of the bending column to be cylindrical, the plurality of reducing plates are all in sliding connection with the bending column, and a reducing drive is arranged on the reducing plates and used for driving the reducing plates to be close to or far away from the bending column. The cable bending device has the effect of being convenient for bending cables with different sections.

Description

Portable cable bending tool

Technical Field

The application relates to the technical field of cable processing, in particular to a portable cable bending tool.

Background

In the laying installation construction of the cable, the cable is often required to be bent, particularly for the installation of a high-voltage cable, the cable is required to be bent or straightened according to the construction requirement, and because the cable diameter is large, a large force is required to be applied to bend or straighten the cable.

In the prior art, when a cable is required to be bent, an operator holds a bending tool by hand, the bending tool comprises a handle and two fixing columns arranged on the handle at intervals, when the cable is bent, the cable is placed between the two fixing columns, the cable is held by one hand, the handle is rotated by the other hand, and the cable is bent along with the movement of the fixing columns when the handle is rotated, so that the bending of the cable is completed.

With respect to the related art described above, with the increasing voltage level of the cable in recent years, the power transmission capacity is increased, the cross-sectional area of the required cable is increased, it is difficult to bend the cable of a large cross-section using a bending tool, and it is difficult to adjust the bending radian of the cable.

Disclosure of Invention

In order to facilitate bending cables of different cross-sections, the present application provides a portable cable bending tool.

The application provides a portable cable bending tool adopts following technical scheme:

a portable cable bending tool comprises a bracket, a workbench, a guide component and a bending component, wherein the guide component and the bending component are arranged on the workbench; the workbench is connected with a bracket, and the bracket is used for fixing the workbench; the guide assembly comprises a first guide post and a second guide post, the first guide post and the second guide post are symmetrically arranged and are both rotationally connected with the workbench, the second guide post is in sliding connection with the workbench, the second guide post can be close to or far away from the first guide post, and a locking piece is arranged on the second guide post and used for fixing the second guide post; the bending assembly comprises a bending column and a bending arm, the bending column is arranged on one side of the first guide column and is rotationally connected with the workbench, a plurality of reducing plates are circumferentially arranged on the bending column, the plurality of reducing plates are arranged on the outer side wall of the bending column to be cylindrical, the plurality of reducing plates are all in sliding connection with the bending column, and the reducing plates are provided with reducing drives which are used for driving the reducing plates to be close to or far away from the bending column; the bending arm and the bending column are symmetrically arranged, the bending arm is rotationally connected with the workbench, and the bending arm is positioned on one side of the bending column far away from the first guide column.

By adopting the technical scheme, when the cable is bent, the cable is placed between the first guide post and the second guide post, the second guide post can be adjusted according to the cross-section area of the cable, the locking piece is released from fixing the second guide post, and the second guide post is slid to be fixed by the locking piece, so that the first guide post and the second guide post clamp and guide the cable, and the cable with different cross sections can be bent conveniently; the cable is placed between the bending column and the bending arm at the position where the cable needs to be bent, the bending arm is rotated to bend the cable, the joint of the bending column and the cable is the bending part of the cable, when the cable is bent, the reducing drive is started to drive the plurality of reducing plates to be far away from the bending column, so that the cylindrical diameter formed by the plurality of reducing plates is enlarged, and when the cylindrical diameter formed by the plurality of reducing plates is reduced, the reducing drive is used to drive the plurality of reducing plates to be close to the bending column, and the cylindrical diameter formed by the plurality of reducing plates is adjusted, so that the bending part of the cable is convenient to be bent into different diameters.

Optionally, the one end that the arm of bending is close to the workstation is equipped with first slider, and the arm of bending rotates to be connected on first slider, and first spout has been seted up to the workstation in first slider department, and first slider slides along first spout, and the slip direction of first slider is close to or keeps away from the post of bending, is equipped with fixing bolt on the first slider.

Through adopting above-mentioned technical scheme, when the cable diameter that needs to bend is great, adjust the distance between the arm of bending and the post of bending, make the cable homoenergetic of different diameters place bend between the post of bending and the arm of bending, improve bending tool's suitability.

Optionally, the reducing plate is close to one side of bending the post and all is equipped with the deflector, deflector sliding connection on bending the post, the reducing drive is including rotating first gear and the second gear of connecting on bending the post, first gear and the coaxial setting of reducing plate, a plurality of reducing arc grooves have been seted up along its circumference to first gear, the radian orientation of a plurality of reducing arc grooves is the same direction, one side that the deflector is close to reducing arc groove is equipped with the traveller, the traveller is located reducing arc inslot and can slide along reducing arc groove, first gear one side and first gear engagement are located to the second gear, be equipped with the rotating member on the second gear, the rotating member is used for rotating the second gear and rotates.

Through adopting above-mentioned technical scheme, start the rotation piece, rotate the piece and drive the second gear and rotate, the second gear drives first gear and rotates, along with first gear rotation, the traveller slides along reducing arc groove, and the traveller drives the deflector and slides along the post of bending, and during the deflector slides, can drive the reducing board and be close to or keep away from the post of bending to enclose the diameter of the cylinder of establishing the formation to a plurality of reducing boards and change, in order to change the radian of the department of bending the cable.

Optionally, the workbench is provided with a first clamping piece, the first clamping piece comprises a first clamping block and a clamping piece, the workbench is provided with a first clamping chute, the first clamping block is slidably connected in the first clamping chute, and the sliding direction of the first clamping block is the same as the advancing direction of the cable on the workbench; a placing groove is formed in the first clamping block; the clamping piece is arranged on the first clamping block and used for fixing the cable in the placing groove.

Through adopting above-mentioned technical scheme, use first guide pillar and second guide pillar to carry out the centre gripping to the cable to place the cable in the standing groove, use clamping piece to fix the cable, promote the clamping piece, tensile cable, the fixed of clamping piece to the cable after tensile, the cable after the tensile is drawn and the fixed cable promotes the clamping piece again, so relapse, the cable is straightened for crooked position.

Optionally, the clamping piece includes clamping plate and first screw rod, and the clamping plate is located the standing groove, and first screw rod runs through first grip block and clamping plate connection, first screw rod and first grip block threaded connection.

Through adopting above-mentioned technical scheme, rotatory first screw rod, first screw rod drive clamping plate carry out the centre gripping to the cable or release clamping plate's centre gripping to the cable, the fixed cable of being convenient for.

Optionally, the workbench is further provided with a second clamping piece, the second clamping piece comprises a second clamping block and a abutting piece, a second clamping chute is formed in the position, close to the first clamping chute, of the workbench, the second clamping chute is an arc-shaped chute, the axis of the second clamping chute is coincident with the rotation axis of the bending arm, the second clamping block is slidably connected in the second clamping chute, the second clamping chute is communicated with the first clamping chute, an elastic piece is arranged between the second clamping block and the first clamping block, and the elastic piece is used for connecting the second clamping block and the first clamping block; the clamping groove is formed in the bending arm, the second clamping block can be located in the clamping groove, the abutting piece is arranged at the position, close to the clamping groove, of the bending arm and used for fixing the second clamping block in the clamping groove, and the yielding groove is formed in the second clamping block.

Through adopting above-mentioned technical scheme, when straightening to the cable, after the cable is fixed in the standing groove, pass the groove of stepping down with the cable, use low tension member to fix the second grip block on the arm of bending, rotate the piece of bending, make the piece of bending keep away from the post of bending, the arm of bending drives the second grip block and keeps away from first grip block, because the elastic component is connected with second grip block and first grip block, when first grip block is kept away from to the second grip block, the second grip block can drive first grip block and slide along first centre gripping spout, thereby straighten to the cable, it is comparatively laborsaving.

Optionally, support tight piece and include the second screw rod and support tight board, support tight board and be located the centre gripping inslot, the second screw rod transversely runs through the arm of bending and support tight board rotation to be connected, second screw rod and arm threaded connection of bending.

Through adopting above-mentioned technical scheme, when fixed to the second grip block, rotatory second screw rod, second screw rod drive low tight board and be close to the second grip block until carry out the centre gripping to the second grip block and fix.

Optionally, support rods are arranged between the diameter-changing plate and the guide plate, one ends of the support rods are connected with the diameter-changing plate, and the other ends of the support rods are connected with the guide plate.

By adopting the technical scheme, the supporting rod can improve the strength between the reducing plate and the guide plate, so that the stability of bending the cable is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the guide assembly, the bending assembly, the first clamping piece and the second clamping piece are arranged on the workbench, the guide assembly and the bending assembly are matched to bend cables, and the bending radian of the bending part of the cable can be adjusted due to the fact that the reducing plates arranged on the periphery side of the bending column in the bending assembly can be used for reducing, the guide assembly can also clamp cables with various section diameters, and therefore cables with different sections can be bent conveniently; meanwhile, the guide assembly is matched with the bending assembly, the first clamping piece and the second clamping piece, so that the first clamping piece and the second clamping piece can straighten the cable.

2. Through setting up the second holder on the arm of bending, drive the second holder through the arm of bending and do the pitch arc motion to drive first holder and do rectilinear motion along the workstation, make operating personnel rotate the arm of bending then can straighten the cable, comparatively laborsaving.

Drawings

Fig. 1 is a schematic structural view of a portable cable bending tool according to an embodiment of the present application.

Fig. 2 is a schematic top view of a portable cable bending tool according to an embodiment of the present application.

Fig. 3 is a schematic diagram of a portable cable bending tool from another perspective in accordance with an embodiment of the present application.

Fig. 4 is a partial perspective cross-sectional view of a portable cable bending tool according to an embodiment of the present application.

Fig. 5 is an exploded view of a portable cable bending tool according to an embodiment of the present application.

Fig. 6 is a schematic structural view of a first clamping member and a second clamping member according to an embodiment of the present application.

Fig. 7 is a schematic structural view of another view of the first clamping member and the second clamping member according to the embodiment of the present application.

Reference numerals illustrate: 1. a bracket; 2. a work table; 21. a first waist-shaped groove; 22. a first chute; 23. a second waist-shaped groove; 24. a first clamping chute; 25. a second clamping chute; 3. a guide assembly; 31. a first guide post; 32. a second guide post; 33. a locking member; 4. a bending assembly; 41. bending the column; 411. a sliding groove; 42. a reducing plate; 43. a support rod; 44. a guide plate; 45. a spool; 46. reducing driving; 461. a first gear; 462. a reducing arc groove; 463. a second gear; 464. a rotating member; 465. fixing the bolt; 466. a fixing plate; 47. a bending arm; 471. a first slider; 472. a fixing bolt; 5. a first clamping member; 51. a first clamping block; 511. a placement groove; 52. a clamping member; 521. a clamping plate; 522. a first screw; 6. a second clamping member; 61. a second clamping block; 62. a tightening member; 621. a second screw; 622. a pressing plate; 64. an elastic member.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

The embodiment of the application discloses a portable cable bending tool, referring to fig. 1 and 2, which comprises a bracket 1, a workbench 2, a guide component 3 and a bending component 4, wherein the guide component 3 and the bending component 4 are arranged on the workbench 2; the support 1 is the A-frame 1 to the bottom of A-frame 1 is the spike end, and workstation 2 passes through bolt fixed connection with the top of support 1, and support 1 fixes workstation 2.

Referring to fig. 2 and 3, the guide assembly 3 includes a first guide post 31 and a second guide post 32, the first guide post 31 and the second guide post 32 are symmetrically arranged and are rotationally connected with the workbench 2 through a rotating shaft, the second guide post 32 is slidably connected with the workbench 2 through a sliding block and sliding chute, the second guide post 32 can be close to or far away from the first guide post 31, a locking member 33 is arranged on the second guide post 32, the locking member 33 is a bolt, the locking member 33 passes through the workbench 2 from bottom to top and is in threaded connection with the second guide post 32, the second guide post 32 can be fixed by screwing the locking member 33, and a first waist-shaped groove 21 for moving the locking member 33 is formed in the workbench 2.

Referring to fig. 2 and 3, the bending assembly 4 includes a bending column 41 and a bending arm 47, the bending column 41 is rotatably connected to the workbench 2 through a rotating shaft, the bending column 41 is located on the right side of the first guide column 31, and the rotation axis of the bending column 41 and the rotation axis of the first guide column 31 are located in the same plane; the bending arm 47 and the bending column 41 are symmetrically arranged, the bending arm 47 is rotationally connected with the workbench 2 through a rotating shaft, and the bending arm 47 is positioned on the right side of the first guide column 31 and the bending column 41.

Referring to fig. 2 and 3, a first slider 471 is disposed at an end of the bending arm 47 near the working platform 2, the first slider 471 is a dovetail block, the bending arm 47 is rotatably connected to the first slider 471 through a rotation shaft, the working platform 2 is provided with a first sliding groove 22 at the position of the first slider 471, a long side direction of the first sliding groove 22 is the same as a wide side direction of the working platform 2, the first slider 471 slides along the first sliding groove 22, a fixing bolt 472 is disposed on the first slider 471, the fixing bolt 472 penetrates through the working platform 2 from top to bottom to be in threaded connection with the first slider 471, and a second waist-shaped groove 23 for moving the fixing bolt 472 is formed in the working platform 2.

Referring to fig. 4 and 5, a plurality of reducing plates 42 are circumferentially arranged on the bending column 41, the plurality of reducing plates 42 are cylindrically formed around the outside of the bending column 41, the plurality of reducing plates 42 are slidably connected with the bending column 41, four reducing plates 42 are arranged in this embodiment, and a reducing driver 46 is arranged on the reducing plates 42, wherein the reducing driver 46 is used for driving the plurality of reducing plates 42 to approach or separate from the bending column 41 at the same time. When the plurality of reducing plates 42 are simultaneously close to the bending column 41, the columnar diameter enclosed by the reducing plates becomes smaller, and when the plurality of reducing plates 42 are simultaneously far from the bending column 41, the columnar diameter enclosed by the reducing plates becomes larger.

Further, referring to fig. 4 and 5, a guide plate 44 is welded on one side of the reducing plate 42 close to the bending column 41, the guide plate 44 is vertically welded on the inner concave surface of the reducing plate 42, the guide plate 44 is slidably connected to the bending column 41, and a sliding slot 411 is formed in the bending column 41 at the guide plate 44; support rods 43 are arranged between the reducing plates 42 and the guide plates 44, right-angle included angles are formed between the support rods 43 and the guide plates 44, one ends of the support rods 43 are welded with the reducing plates 42, and the other ends of the support rods are welded with the guide plates 44; the reducing driver 46 includes a first gear 461 and a second gear 463 rotatably connected to the bending column 41, the first gear 461 is coaxially arranged with the reducing plate 42, the first gear 461 is rotatably connected to the bending column 41 through a rotation shaft, four reducing arc grooves 462 are formed in the first gear 461 along the circumferential direction of the first gear, the radians of the four reducing arc grooves 462 face the same direction, a sliding column 45 is welded on one side of the guide plate 44 close to the reducing arc grooves 462, the sliding column 45 protrudes out of the lower surface of the guide plate 44, the sliding column 45 is located in the reducing arc grooves 462 and can slide along the reducing arc grooves 462, the second gear 463 is arranged on one side of the first gear 461 and meshed with the first gear 461, the second gear 463 is rotatably connected to the bending column 41 through a rotation shaft, a rotating member 464 is fixedly connected to the rotation shaft of the second gear 463, and the rotating member 464 is used for rotating the second gear 463.

Referring to fig. 3 and 4, the rotating member 464 may be a servo motor connected to a rotating shaft of the second gear 463 through a coupling, or may be a rotating rod welded on the rotating shaft, one end of the rotating rod, far from the second gear 463, penetrates through the bending column 41 and the workbench 2 and is rotatably connected with the bending column 41 and the workbench 2 through bearings, fixing bolts 465 are disposed on the lower surface of the workbench 2, fixing plates 466 are disposed on two sides of the rotating rod, and the fixing bolts 465 transversely penetrate through the two fixing plates 466 and the rotating rod.

When changing the diameter of the cylinder that a plurality of reducing plates 42 enclose, make the rotating member 464 drive the second gear 463 to rotate, the second gear 463 drives the first gear 461 to rotate, the sliding column 45 slides along the reducing arc groove 462, make a plurality of reducing plates 42 be close to or keep away from the bending column 41 simultaneously, then fix the rotating member 464, be convenient for adjust the bending radian of the bending part of the cable, be convenient for bend the cable according to the actual bending demand.

Specifically, referring to fig. 6 and 7, a first clamping piece 5 is provided on the workbench 2, the first clamping piece 5 includes a first clamping block 51 and a clamping piece 52, a first clamping chute 24 is provided on the workbench 2, the first clamping chute 24 is a dovetail groove, the first clamping block 51 is slidably connected in the first clamping chute 24 through the dovetail block, and the sliding direction of the first clamping block 51 is the same as the advancing direction of the cable on the workbench 2; the first clamping block 51 is provided with a placing groove 511 with an open end; the clamping member 52 is horizontally disposed on the first clamping block 51, and the clamping member 52 is used to fix the cable in the placement groove 511.

Referring to fig. 6 and 7, the clamping member 52 includes a clamping plate 521 and a first screw 522, the clamping plate 521 is vertically disposed in the placement groove 511, the first screw 522 penetrates through the first clamping block 51 to be welded with the clamping plate 521, the first screw 522 is in threaded connection with the first clamping block 51, and the clamping plate 521 can be driven to fix the cable by rotating the first screw 522.

Referring to fig. 6 and 7, the workbench 2 is further provided with a second clamping piece 6, the second clamping piece 6 comprises a second clamping block 61 and a abutting piece 62, a second clamping chute 25 is formed in the position, close to the first clamping chute 24, of the workbench 2, the cross section of the second clamping chute 25 is cuboid and smaller than that of the first clamping chute 24, the second clamping chute 25 is an arc-shaped chute, the axis of the second clamping chute 25 coincides with the rotation axis of the bending arm 47, the second clamping block 61 is slidably connected in the second clamping chute 25 through the rectangular block, the second clamping chute 25 is communicated with the first clamping chute 24, an elastic piece 64 is arranged between the second clamping block 61 and the first clamping block 51, the elastic piece 64 is used for connecting the second clamping block 61 and the first clamping block 51, the elastic piece 64 is a spring or an elastic column, and the elastic piece 64 is a spring in the embodiment; the bending arm 47 is provided with a clamping groove which is opened at the bottom of the bending arm 47, the second clamping block 61 is placed in the clamping groove, the abutting piece 62 is arranged at the position, close to the clamping groove, of the bending arm 47, the abutting piece 62 is used for fixing the second clamping block 61 in the clamping groove, the second clamping block 61 is provided with a yielding groove, and the abutting piece 62 can be an air cylinder or a screw transmission mechanism.

Specifically, referring to fig. 6 and 7, the abutting piece 62 in the present embodiment is a screw transmission mechanism, the abutting piece 62 includes a second screw 621 and an abutting plate 622, the abutting plate 622 is located in the clamping groove, the second screw 621 transversely penetrates the bending arm 47 and is rotationally connected with the abutting plate 622, and the second screw 621 is in threaded connection with the bending arm 47; the second cross rod is rotated, and the second cross rod drives the abutting plate 622 to be close to the second clamping block 61 to clamp the second clamping block 61.

The implementation principle of the portable cable bending tool in the embodiment of the application is as follows: when the bending tool is used, a cable is placed between the first guide post 31 and the second guide post 32, the cable is abutted against the first guide post 31 and the second guide post 32, the positions of the plurality of reducing plates 42 are adjusted according to the diameter of a bending part of the cable to be bent, when the plurality of reducing plates 42 are adjusted, the second gear 463 is rotated by the rotating piece 464, the first gear 461 is driven to rotate when the second gear 463 is rotated, the sliding post 45 is driven to slide along the reducing arc groove 462 when the first gear 461 is rotated, the guide plate 44 is driven to slide along the bending post 41 when the sliding post 45 slides, the diameters of cylinders surrounded by the plurality of reducing plates 42 are adjusted by adjusting the distance between the reducing plates 42 and the bending post 41, so that the cables with different sections can be clamped and bent by adjusting the distance between the first guide post 31 and the second guide post 32 when the cable is bent, and the cables with different sections can be bent conveniently; when the cable to be bent needs to be straightened, the cable can be placed in the first clamping block 51 to be fixed, the second clamping block 61 is fixed in the bending arm 47, the bending arm 47 is rotated, the bending arm 47 drives the second clamping block 61 to pull the first clamping block 51 through the elastic piece 64, and the first clamping block 51 slides along the long side direction of the workbench 2, so that the cable is straightened.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. A portable cable bending tool, characterized by: comprises a bracket (1), a workbench (2), a guide component (3) and a bending component (4) which are arranged on the workbench (2);

the workbench (2) is connected with the bracket (1), and the bracket (1) is used for fixing the workbench (2);

the guide assembly (3) comprises a first guide post (31) and a second guide post (32), the first guide post (31) and the second guide post (32) are symmetrically arranged and are both in rotary connection with the workbench (2), the second guide post (32) is in sliding connection with the workbench (2), the second guide post (32) can be close to or far away from the first guide post (31), a locking piece (33) is arranged on the second guide post (32), and the locking piece (33) is used for fixing the second guide post (32);

the bending assembly (4) comprises a bending column (41) and a bending arm (47), the bending column (41) is arranged on one side of the first guide column (31) and is rotationally connected with the workbench (2), a plurality of reducing plates (42) are circumferentially arranged on the bending column (41), the outer side of the bending column (41) is provided with a plurality of reducing plates (42) in a cylindrical shape, the plurality of reducing plates (42) are all in sliding connection with the bending column (41), a reducing drive (46) is arranged on the reducing plates (42), and the reducing drive (46) is used for driving the reducing plates (42) to be close to or far away from the bending column (41); the bending arms (47) are symmetrically arranged with the bending columns (41), the bending arms (47) are rotationally connected with the workbench (2), and the bending arms (47) are located on one side, far away from the first guide column (31), of the bending columns (41).

2. A portable cable bending tool as set forth in claim 1, wherein: one end of the bending arm (47) close to the workbench (2) is provided with a first sliding block (471), the bending arm (47) is rotationally connected to the first sliding block (471), the workbench (2) is provided with a first sliding groove (22) at the first sliding block (471), the first sliding block (471) slides along the first sliding groove (22), the sliding direction of the first sliding block (471) is close to or far away from the bending column (41), and the first sliding block (471) is provided with a fixing bolt (472).

3. A portable cable bending tool as set forth in claim 1, wherein: the reducing plate (42) is close to one side of the bending column (41) and is provided with a guide plate (44), the guide plate (44) is connected to the bending column (41) in a sliding mode, the reducing drive (46) comprises a first gear (461) and a second gear (463) which are connected to the bending column (41) in a rotating mode, the first gear (461) and the reducing plate (42) are coaxially arranged, a plurality of reducing arc grooves (462) are formed in the circumferential direction of the first gear (461), the radians of the reducing arc grooves (462) face the same direction, a sliding column (45) is arranged on one side of the guide plate (44) close to the reducing arc grooves (462), the sliding column (45) is located in the reducing arc grooves (462) and can slide along the reducing arc grooves (462), the second gear (463) is arranged on one side of the first gear (461) to be meshed with the first gear (461), a rotating piece (464) is arranged on the second gear (463), and the rotating piece (464) is used for rotating the second gear (463).

4. A portable cable bending tool as set forth in claim 1, wherein: the workbench (2) is provided with a first clamping piece (5), the first clamping piece (5) comprises a first clamping block (51) and a clamping piece (52), the workbench (2) is provided with a first clamping chute (24), the first clamping block (51) is connected in the first clamping chute (24) in a sliding mode, and the sliding direction of the first clamping block (51) is the same as the advancing direction of a cable on the workbench (2); a placing groove (511) is formed in the first clamping block (51); the clamping piece (52) is arranged on the first clamping block (51), and the clamping piece (52) is used for fixing the cable in the placing groove (511).

5. A portable cable bending tool as set forth in claim 4, wherein: the clamping piece (52) comprises a clamping plate (521) and a first screw rod (522), wherein the clamping plate (521) is located in the placing groove (511), the first screw rod (522) penetrates through the first clamping block (51) to be connected with the clamping plate (521), and the first screw rod (522) is in threaded connection with the first clamping block (51).

6. A portable cable bending tool as set forth in claim 4, wherein: the workbench (2) is further provided with a second clamping piece (6), the second clamping piece (6) comprises a second clamping block (61) and a supporting piece (62), a second clamping chute (25) is formed in the position, close to the first clamping chute (24), of the workbench (2), the second clamping chute (25) is an arc-shaped groove, the axis of the second clamping chute (25) coincides with the rotation axis of the bending arm (47), the second clamping block (61) is connected in the second clamping chute (25) in a sliding manner, the second clamping chute (25) is communicated with the first clamping chute (24), an elastic piece (64) is arranged between the second clamping block (61) and the first clamping block (51), and the elastic piece (64) is used for connecting the second clamping block (61) and the first clamping block (51); the clamping groove is formed in the bending arm (47), the second clamping block (61) can be located in the clamping groove, the abutting piece (62) is arranged at the position, close to the clamping groove, of the bending arm (47), the abutting piece (62) is used for fixing the second clamping block (61) in the clamping groove, and the yielding groove is formed in the second clamping block (61).

7. A portable cable bending tool as set forth in claim 6, wherein: the abutting piece (62) comprises a second screw rod (621) and an abutting plate (622), the abutting plate (622) is located in the clamping groove, the second screw rod (621) transversely penetrates through the bending arm (47) to be connected with the abutting plate (622) in a rotating mode, and the second screw rod (621) is connected with the bending arm (47) in a threaded mode.

8. A portable cable bending tool as set forth in claim 3, wherein: support rods (43) are arranged between the reducing plates (42) and the guide plates (44), one ends of the support rods (43) are connected with the reducing plates (42), and the other ends of the support rods are connected with the guide plates (44).

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