阅读说明：本技术 风电场电气预埋施工用管线弯头预制设备 (Pipeline elbow prefabricating equipment for electric pre-buried construction of wind power plant ) 是由 曹俊 王延曾 程新科 刘金山 关鹏飞 邹鹏举 尹志富 于 2020-06-19 设计创作，主要内容包括：本发明公开了一种风电场电气预埋施工用管线弯头预制设备,包括底座和定位板,底座两侧分别设置有定位板,在底座的中间位置处挖设有凹槽,在移动滑槽上滑动连接有可调式折弯组件,在底座右端凹槽的上方设置有端部定位组件；在底座两侧面上分别挖设有侧部定位孔,底座每侧面上的侧部定位孔至少为十个,且相邻的侧部定位孔之间的间距相同。本发明通过设置端部定位组件,能够对待折弯线管的一端进行固定；通过将滑动底板与底座滑动连接在一起、第二定位环可在按压杆上进行移动,使用时,可根据线管的折弯点,自由调整滑动底板在底座上的位置以及弹簧在按压杆上的位置,从而达到精准折弯的效果,使用方便,操作简单。(The invention discloses a pipeline elbow prefabricating device for electric pre-embedding construction of a wind power plant, which comprises a base and positioning plates, wherein the positioning plates are respectively arranged on two sides of the base, a groove is dug in the middle of the base, an adjustable bending assembly is connected onto a moving chute in a sliding manner, and an end positioning assembly is arranged above the groove at the right end of the base; the two side surfaces of the base are respectively provided with side positioning holes in an excavating mode, the number of the side positioning holes on each side surface of the base is at least ten, and the distance between every two adjacent side positioning holes is the same. According to the invention, one end of the wire pipe to be bent can be fixed by arranging the end positioning component; through with sliding bottom plate and base sliding connection together, the second holding ring can remove on pressing the depression bar, during the use, can freely adjust the position of sliding bottom plate on the base and the position of spring on pressing the depression bar according to the bending point of spool to reach the effect of accurate bending, convenient to use, easy operation.)

1. The utility model provides an electric pre-buried construction of wind-powered electricity generation field is with prefabricated equipment of pipeline elbow, includes base (1) and locating plate (2), its characterized in that: positioning plates (2) are respectively arranged on two sides of the base (1), a groove (3) is dug in the middle of the base (1), moving sliding grooves (9) are symmetrically dug in the base (1) on the two sides of the groove (3), an adjustable bending assembly is connected onto the moving sliding grooves (9) in a sliding mode, and an end positioning assembly is arranged above the groove (3) on the right end of the base (1); the side positioning holes (23) are respectively dug on two side surfaces of the base (1), at least ten side positioning holes (23) are formed in each side surface of the base (1), and the distance between every two adjacent side positioning holes (23) is the same.

2. The prefabricated equipment of pipeline elbow for electric pre-buried construction of wind-powered electricity generation field of claim 1, characterized in that: the number of the positioning plates (2) is two, the inner side edge of each positioning plate (2) is fixedly connected with the outer parts of the two side surfaces of the base (1) respectively, the two positioning plates (2) and the base (1) are in an integrated structure, and the bottom surface of the base (1) and the bottom surfaces of the two positioning plates (2) are positioned on the same horizontal plane; and at least one first positioning hole (24) is respectively dug at two ends of each positioning plate (2).

3. The prefabricated equipment of pipeline elbow for electric pre-buried construction of wind-powered electricity generation field of claim 1, characterized in that: the movable sliding grooves (9) are four, the two movable sliding grooves (9) are arranged on the base (1) on the left side of the groove (3) and the base (1) on the right side of the groove (3) respectively, the two outer sides of the two movable sliding grooves (9) on the base (1) on the left side of the groove (3) are provided with second positioning holes (22) respectively, the two outer sides of the two movable sliding grooves (9) on the base (1) on the right side of the groove (3) are provided with second positioning holes (22) respectively, the number of the second positioning holes (22) on the outer side of each movable sliding groove (9) is at least ten, and the distance between every two adjacent second positioning holes (22) is the same.

4. The prefabricated equipment of pipeline elbow for electric pre-buried construction of wind-powered electricity generation field of claim 1, characterized in that: the adjustable bending assembly comprises two sliding bottom plates (12), vertical plates (10), positioning blocks (11), fixing shafts (15), external sleeves (13), positioning sleeves (16), springs (21) and pressing rods (18), the two sliding bottom plates (12) are symmetrically arranged on the bases (1) on the two sides of the outer portion of the groove (3), sliding blocks (12-1) are arranged at positions, corresponding to the moving sliding grooves (9), of the bottom surface of each sliding bottom plate (12), the two sliding blocks (12-1) of the bottom surface of each sliding bottom plate (12) are respectively connected with the corresponding moving sliding grooves (9) in a sliding mode, the vertical plates (10) are arranged at the outer ends of the sliding bottom plates (12); each sliding bottom plate (12) is provided with a positioning block (11), a fixed shaft (15) is fixedly connected between the two positioning blocks (11), an external sleeve (13) is rotatably connected to the outside of the fixed shaft (15), and an annular groove (14) is dug in the center of the external sleeve (13); a positioning sleeve (16) is fixedly connected in a sliding groove (14) at the bottom of the outer sleeve (13), the positioning sleeve (16) is positioned in the groove (3), the right end of the positioning sleeve (6) is fixedly connected with the bottom of the sliding groove (14), a first connecting block (17) is arranged above the left end of the positioning sleeve (6), the right end of the pressing rod (18) is welded with the first connecting block (17), and a first positioning ring (19) is arranged between the outside of the right end of the pressing rod (18) and the first connecting block (17); third positioning holes (26) with internal threads are formed in the outer portion of the pressing rod (18), the number of the third positioning holes (26) is at least ten, and the distances between every two adjacent third positioning holes (6) are the same; a spring (21) penetrates through the positioning sleeve (16), the left end of the spring (21) extends out of the left end of the groove (3), a second connecting block (20) is arranged above the left end of the spring (21), the second connecting block (20) is connected with the pressing rod (18) through a second positioning ring (25), the second positioning ring (25) is sleeved outside the pressing rod (18), and the bottom of the second positioning ring (25) is welded with the second connecting block (20); the inner wall of the second positioning ring (25) is not fixed with the outer wall of the pressing rod (18), and the second positioning ring (25) is connected with the pressing rod (18) through a first bolt (27); the right end of the spring (21) is positioned in the right end of the groove (3).

5. The prefabricated equipment of pipeline elbow for electric pre-buried construction of wind-powered electricity generation field of claim 4, characterized in that: the outer sleeve (13) is positioned above the groove (3), the bottom of the outer sleeve (13) is positioned above the position between the inner ends of the two sliding bottom plates (12), the width of the annular groove (4) is consistent with that of the groove (3), and the position of the sliding groove (4) corresponds to that of the groove (3) below.

6. The device for prefabricating the pipeline elbow for the electric pre-buried construction of the wind power plant according to claim 3 or 4, characterized in that: the sliding bottom plates (12) positioned at two sides of the positioning block (11) are respectively provided with a first guide pipe (29) with an internal thread, the position of the first guide pipe (29) corresponds to the position of a second positioning hole (22) below the first guide pipe, a first threaded rod (29-1) is rotatably inserted into each first guide pipe (29), and the bottom end of each threaded rod (29-1) is directly communicated with the bottom surface of the sliding bottom plate (12); a second guide pipe (30) with internal threads is arranged at the position, corresponding to the side positioning hole (23), of the outer portion of each vertical plate (10), a second threaded rod (30-1) is inserted in the second guide pipe (30) in a rotating mode, and the end portion of the second threaded rod (30-1) is directly communicated with the inner side face of the vertical plate (10).

7. The prefabricated equipment of pipeline elbow for electric pre-buried construction of wind-powered electricity generation field of claim 1, characterized in that: the end positioning assembly comprises a U-shaped positioning plate (7), a third guide pipe (4), an upper tightening block (6), a lower tightening block (8), a pressing plate (28), a bottom spring (32) and a bottom supporting seat (31), the U-shaped positioning plate (7) is distributed in a downward opening shape, the U-shaped positioning plate (7) is arranged above the right end of the groove (3), the top surface of the U-shaped positioning plate (7) is provided with the third guide pipe (4) with an internal thread, a third threaded rod (5) is inserted in the third guide pipe (4) in a rotating manner, the bottom end of the third threaded rod (5) is directly communicated with the lower part of the top surface of the U-shaped positioning plate (7), the bottom end of the third threaded rod (5) is provided with the upper tightening block (6), and the bottom supporting seat (31) is arranged at the position of the upper tightening block (6) corresponding to the bottom surface of the groove (3), the bottom support seat (31) is provided with a bottom spring (32), the top end of the bottom spring (32) is provided with a lower jacking block (8), the upper end surface of the lower jacking block (8) is distributed in a concave arc shape, the right side of the lower jacking block (8) is provided with a pressing plate (28), and the right end of the pressing plate (28) extends out of the right end of the groove (3).

8. The device for prefabricating the pipeline elbow for the electric pre-buried construction of the wind power plant according to claim 4 or 7, characterized in that: the right end of the spring (21) is positioned in the groove (3) between the upper tightening block (6) and the lower tightening block (8); the bottom surface of the upper pressing block (6) is in square distribution, and when the third threaded rod (5) rotates downwards in the third guide pipe (4), the upper pressing block (6) can rotate in the groove (3).

9. The prefabricated equipment of pipeline elbow for electric pre-buried construction of wind-powered electricity generation field of claim 4, characterized in that: clamping grooves (9-1) are symmetrically dug in the two inner walls of each movable sliding chute (9), and clamping blocks (12-2) are arranged at the positions, corresponding to the clamping grooves (9-1), of the two side surfaces of each sliding block (12-1); the inner wall of the first positioning ring (19) is welded with the outer wall of the end part of the pressing rod (18); the outer diameter of the spring (21) is smaller than the inner diameter of the positioning sleeve (16).

The technical field is as follows:

the invention relates to a pipeline elbow prefabricating device for electric construction of a wind power plant, in particular to a pipeline elbow prefabricating device for electric pre-burying construction of a wind power plant.

Background art:

the electrical engineering is an important subsection engineering of a wind power plant installation engineering, and the success and failure of the electrical engineering are related to the progress, acceptance and use of the whole single engineering; compared with other industrial electrical installation and civil electrical installation projects, the wind power plant electrical construction has the following characteristics: most wind power plants are located in seasides, grasslands, hills, gobi and other outdoor places, the conditions are hard, the environment is severe, and much inconvenience is brought to construction. Fan basis is bulky concrete bold formula basis usually, and the pre-buried spool of electric instrument is usually many in the basis, generally adopts the PVC spool, and the right angle of spool connects the great elbow of general adoption radian, and this just needs the staff to carry out the preflex to the spool end in advance and handles, and in current construction, the staff is generally directly bare-handed or with the help of ground, directly bends to the spool, and the shortcoming of this spool of bending is: 1. time and labor are wasted, and the normal laying of the line can be influenced due to different bending angles of the line pipes, and the construction site is not beautiful; 2. the outer wall of the pipeline is easily abraded; 3. when the wire pipe is bent, the bent part is easy to deform; therefore, a tool which can quickly bend the end of the line pipe and can prevent the line pipe from being damaged is urgently needed.

The invention content is as follows:

the technical problem to be solved by the invention is as follows: overcome prior art's not enough, provide a wind-powered electricity generation field electrical pre-buried construction with prefabricated equipment of pipeline elbow, can bend to the spool end fast, avoid the department of bending or the condition that wearing and tearing appear in the spool outer wall simultaneously, convenient to use, easy operation.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a pipeline elbow prefabricating device for electric pre-embedding construction of a wind power plant comprises a base and positioning plates, wherein the positioning plates are arranged on two sides of the base respectively, a groove is dug in the middle of the base, moving sliding grooves are dug in a symmetrical mode on the bases on the two sides of the groove respectively, an adjustable bending assembly is connected onto the moving sliding grooves in a sliding mode, and an end portion positioning assembly is arranged above the groove in the right end of the base; the side positioning holes are respectively dug on two side surfaces of the base, at least ten side positioning holes are formed in each side surface of the base, and the distance between every two adjacent side positioning holes is the same.

The two positioning plates are respectively fixedly connected with the outer parts of the two side surfaces of the base, the two positioning plates and the base are in an integrated structure, and the bottom surfaces of the base and the two positioning plates are positioned on the same horizontal plane; and at least one first positioning hole is dug at each of the two ends of each positioning plate.

The movable sliding grooves are four in number, two movable sliding grooves are arranged on the base located on the left side of the groove and the base located on the right side of the groove respectively, second positioning holes are formed in two outer sides of the two movable sliding grooves on the base located on the left side of the groove respectively, second positioning holes are formed in two outer sides of the two movable sliding grooves on the base located on the right side of the groove respectively, the number of the second positioning holes in the outer side of each movable sliding groove is at least ten, and the distance between every two adjacent second positioning holes is the same.

The adjustable bending assembly comprises two sliding bottom plates, vertical plates, positioning blocks, fixing shafts, external sleeves, positioning sleeves, springs and pressing rods, the two sliding bottom plates are symmetrically arranged on the bases on two sides of the outside of the groove, sliding blocks are arranged on the bottom surface of each sliding bottom plate at positions corresponding to the moving sliding grooves respectively, the number of the sliding blocks on the bottom surface of each sliding bottom plate is two, the sliding blocks on the bottom surface of each sliding bottom plate are connected with the corresponding moving sliding grooves in a sliding mode respectively, and the vertical plates are arranged at the outer ends of the sliding bottom plates respectively; each sliding bottom plate is provided with a positioning block, a fixed shaft is fixedly connected between the two positioning blocks, an external sleeve is rotatably connected to the outside of the fixed shaft, and an annular groove is dug in the center of the external sleeve; a positioning sleeve is fixedly connected in a sliding groove at the bottom of the external sleeve, the positioning sleeve is positioned in the groove, the right end of the positioning sleeve is fixedly connected with the bottom of the sliding groove, a first connecting block is arranged above the left end of the positioning sleeve, the right end of the pressing rod is welded with the first connecting block, and a first positioning ring is arranged between the outside of the right end of the pressing rod and the first connecting block; third positioning holes with internal threads are formed in the outer portion of the pressing rod, the number of the third positioning holes is at least ten, and the distance between every two adjacent third positioning holes is the same; a spring penetrates through the positioning sleeve, the left end of the spring extends out of the left end of the groove, a second connecting block is arranged above the left end of the spring, the second connecting block is connected with the pressing rod through a second positioning ring, the second positioning ring is sleeved outside the pressing rod, and the bottom of the second positioning ring is welded with the second connecting block; the inner wall of the second positioning ring is not fixed with the outer wall of the pressing rod, and the second positioning ring is connected with the pressing rod through a first bolt; the right end of the spring is positioned in the right end of the groove.

The outer sleeve is positioned above the groove, the bottom of the outer sleeve is positioned above the position between the inner ends of the two sliding bottom plates, the width of the annular groove is consistent with that of the groove, and the position of the sliding groove corresponds to that of the lower groove.

The sliding bottom plates positioned at two sides of the positioning block are respectively provided with a first guide pipe with internal threads, the position of each first guide pipe corresponds to the position of a second positioning hole below the first guide pipe, a first threaded rod is rotatably inserted into each first guide pipe, and the bottom end of each threaded rod is directly connected with the bottom surface of the sliding bottom plate; a second guide pipe with internal threads is arranged at the position, corresponding to the side positioning hole, of the outer portion of each vertical plate, a second threaded rod is rotatably inserted into the second guide pipe, and the end portion of the second threaded rod is directly connected with the inner side face of each vertical plate.

The end positioning assembly comprises a U-shaped positioning plate, a third guide pipe, an upper jacking block, a lower jacking block, a pressing plate, a bottom spring and a bottom supporting seat, wherein the U-shaped positioning plate is distributed in a downward opening shape, the U-shaped positioning plate is arranged above the right end of the groove, the top surface of the U-shaped positioning plate is provided with the third guide pipe with internal threads, a third threaded rod is rotatably inserted in the third guide pipe, the bottom end of the third threaded rod is directly communicated with the lower part of the top surface of the U-shaped positioning plate, the bottom end of the third threaded rod is provided with the upper jacking block, the upper jacking block is arranged at the position corresponding to the bottom surface of the groove, the bottom supporting seat is provided with the bottom spring, the top end of the bottom spring is provided with the lower jacking block, the upper end of the lower jacking block is distributed in a concave arc shape, and the right side of the lower jacking block is provided with the bottom spring, the right end of the pressing plate extends out of the right end of the groove.

The right-hand member of spring is located the recess between upper portion top tight piece and the tight piece of lower part top, the bottom surface of the tight piece of upper portion top is square distribution, and when the third threaded rod rotates downwards in the third stand pipe, the tight piece of upper portion top can rotate in the recess.

Clamping grooves are symmetrically formed in the two inner walls of each moving sliding groove in a digging mode, and clamping blocks are arranged at the positions, corresponding to the clamping grooves, of the two side faces of each sliding block; the inner wall of the first positioning ring is welded with the outer wall of the end part of the pressing rod, and the outer diameter of the spring is smaller than the inner diameter of the positioning sleeve.

The invention has the following positive beneficial effects:

1. according to the invention, the spring is sleeved in the positioning sleeve, when the positioning sleeve is used, one end of the wire pipe is sleeved outside the spring, so that the deformation of the wire pipe during bending is avoided; the second positioning ring can drive the spring to move left and right along the pressing rod, and the position of the spring on the pressing rod can be adjusted according to the bending point of the line pipe during use, and then the spring is screwed down and connected through the first bolt.

2. According to the invention, the sliding bottom plate is provided with the first guide pipe and the first threaded rod, and the vertical plate is provided with the second guide pipe and the second threaded rod, so that the sliding bottom plate and the base are conveniently fixed, the use is convenient, and the operation is simple.

3. The invention relates to a positioning sleeve, which is characterized in that the positioning sleeve and the bottom of an annular groove on an outer sleeve are fixedly connected together, when in use, a wire tube is sleeved outside a spring, and then a pressing rod and the end of the wire tube are held by hands, so that the positioning sleeve rotates for 90 degrees along the outer sleeve, and the bending of the wire tube is completed.

4. According to the invention, the end positioning assembly is arranged at the right end of the groove, one end of the wire pipe is sleeved outside the spring by pressing the pressing plate downwards, after the wire pipe is sleeved, the bottom spring and the lower jacking block can jack the wire pipe tightly, then the third threaded rod is adjusted, the upper jacking block is enabled to tightly press the outer wall of the wire pipe, and meanwhile, the bottom spring is compressed to the minimum value, so that the situation that the wire pipe moves in the groove when the wire pipe is bent is avoided, and the bending quality of the wire pipe is ensured.

Description of the drawings:

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

FIG. 2 is a schematic structural view of an end positioning assembly at the right end of the base according to the present invention;

FIG. 3 is a view of a partial connection configuration of the outer sleeve and the alignment sleeve of the present invention;

FIG. 4 is a partial structural view of the sliding bottom plate of the present invention;

fig. 5 is a partial cross-sectional view of the moving groove.

The specific implementation mode is as follows:

the invention will be further explained and explained with reference to the drawings, in which:

referring to fig. 1-5, a pipeline elbow prefabricating device for electric pre-embedding construction of a wind power plant comprises a base 1 and positioning plates 2, wherein the positioning plates 2 are respectively arranged on two sides of the base 1, a groove 3 is dug in the middle of the base 1, moving sliding grooves 9 are symmetrically dug in the base 1 on two sides of the groove 3, an adjustable bending assembly is connected to the moving sliding grooves 9 in a sliding manner, and an end positioning assembly is arranged above the groove 3 on the right end of the base 1; the two side surfaces of the base 1 are respectively provided with side positioning holes 23 in an excavation mode, at least ten side positioning holes 23 are formed in each side surface of the base 1, and the distance between every two adjacent side positioning holes 23 is the same.

The number of the positioning plates 2 is two, the inner side edge of each positioning plate 2 is fixedly connected with the outer parts of the two side surfaces of the base 1, the two positioning plates 2 and the base 1 are in an integrated structure, and the bottom surfaces of the base 1 and the two positioning plates 2 are positioned on the same horizontal plane; at least one first positioning hole 24 is dug at two ends of each positioning plate 2 respectively, and when the positioning plate is used, a bolt is inserted into each first positioning hole 24, so that each positioning plate 2 is fixed with a workbench or the ground.

The number of the movable sliding grooves 9 is four, the two movable sliding grooves 9 are arranged on the base 1 on the left side of the groove 3 and the base 1 on the right side of the groove 3 respectively, the second positioning holes 22 are arranged on two outer sides of the two movable sliding grooves 9 on the base 1 on the left side of the groove 3 respectively, the second positioning holes 22 are arranged on two outer sides of the two movable sliding grooves 9 on the base 1 on the right side of the groove 3 respectively, the number of the second positioning holes 22 on the outer side of each movable sliding groove 9 is at least ten, and the distance between every two adjacent second positioning holes 22 is the same.

The adjustable bending assembly comprises two sliding bottom plates 12, vertical plates 10, positioning blocks 11, a fixing shaft 15, an external sleeve 13, positioning sleeves 16, a spring 21 and a pressing rod 18, wherein the two sliding bottom plates 12 are symmetrically arranged on the base 1 at two sides outside the groove 3, a sliding block 12-1 is arranged at the position of the bottom surface of each sliding bottom plate 12 corresponding to the movable sliding chute 9, the sliding block 12-1 at the bottom surface of each sliding bottom plate 12-1 is respectively two, the sliding block 12-1 at the bottom surface of each sliding bottom plate 12 is respectively connected with the corresponding movable sliding chute 9 in a sliding mode, and the vertical plate 10 is arranged at the outer end of each sliding bottom plate 12; each sliding bottom plate 12 is provided with a positioning block 11, a fixed shaft 15 is fixedly connected between the two positioning blocks 11 (two ends of the fixed shaft 15 respectively penetrate through the corresponding positioning blocks 11, one end of each fixed shaft 15 is fixedly connected with the corresponding positioning block 11), an external sleeve 13 is rotatably connected to the outside of the fixed shaft 15, and an annular groove 14 is dug at the central position of the external sleeve 13; a positioning sleeve 16 is fixedly connected in a sliding groove 14 at the bottom of the outer sleeve 13, the positioning sleeve 16 is positioned in the groove 3 (the direction of the positioning sleeve 16 is consistent with that of the groove 3), the right end of the positioning sleeve 16 is fixedly connected with the bottom of the sliding groove 14, a first connecting block 17 is arranged above the left end of the positioning sleeve 6, the right end of the pressing rod 18 is welded with the first connecting block 17, a first positioning ring 19 is arranged between the outside of the right end of the pressing rod 18 and the first connecting block 17 (the right end of the pressing rod 18 is welded with the first connecting block 17, a first positioning ring 19 is sleeved outside the right end of the pressing rod 18, the inner wall of the first positioning ring 19 is welded with the outer wall of the right end of the pressing rod 18, and the bottom of the first positioning ring 19 is welded with the first connecting block 17); a third positioning hole 26 with internal threads is formed in the outer portion of the pressing rod 18, the number of the third positioning holes 26 is at least ten, and the distances between every two adjacent third positioning holes 6 are the same; a spring 21 penetrates through the positioning sleeve 16, the left end of the spring 21 extends out of the left end of the groove 3, a second connecting block 20 is arranged above the left end of the spring 21, the second connecting block 20 is connected with the pressing rod 18 through a second positioning ring 25, the second positioning ring 25 is sleeved outside the pressing rod 18, and the bottom of the second positioning ring 25 is welded with the second connecting block 20; the inner wall of the second positioning ring 25 is not fixed with the outer wall of the pressing rod 18, and the second positioning ring 25 is connected with the pressing rod 18 through a first bolt 27; the right end of the spring 21 is located in the right end of the recess 3.

The outer sleeve 13 is positioned above the groove 3, the bottom of the outer sleeve 13 is positioned at the upper position between the inner ends of the two sliding bottom plates 12, the width of the annular groove 4 is consistent with that of the groove 3, and the position of the sliding groove 4 corresponds to that of the lower groove 3.

The sliding bottom plates 12 positioned at two sides of the positioning block 11 are respectively provided with a first guide pipe 29 with internal threads, the position of the first guide pipe 29 corresponds to the position of the second positioning hole 22 below, a first threaded rod 29-1 is rotatably inserted into each first guide pipe 29, and the bottom end of each first threaded rod 29-1 is directly communicated with the bottom surface of the sliding bottom plate 12; a second guide pipe 30 with internal threads is arranged at the position, corresponding to the side positioning hole 23, of the outer part of each vertical plate 10, a second threaded rod 30-1 is rotatably inserted in the second guide pipe 30, and the end part of the second threaded rod 30-1 is directly communicated with the inner side surface of the vertical plate 10. That is, the sliding bottom plate 12 is inserted into the corresponding first guiding tube 29 by rotating through the first threaded rod 29-1 and inserted into the corresponding second positioning hole 22 below, so that the sliding bottom plate 12 and the base 1 are fixed together; meanwhile, the second threaded rods 29-1 are inserted into the corresponding second guide pipes 30 and inserted into the side positioning holes 23 on the side surface of the base 1, so that the vertical plates and the side surface of the base 1 are fixed together.

The end positioning component comprises a U-shaped positioning plate 7, a third guide pipe 4, an upper tightening block 6, a lower tightening block 8, a pressing plate 28, a bottom spring 32 and a bottom supporting seat 31, wherein the U-shaped positioning plate 7 is distributed with a downward opening, the U-shaped positioning plate 7 is arranged above the right end of the groove 3, the top surface of the U-shaped positioning plate 7 is provided with the third guide pipe 4 with internal threads, a third threaded rod 5 is inserted in the third guide pipe 4 in a rotating way, the bottom end of the third threaded rod 5 is directly communicated with the lower part of the top surface of the U-shaped positioning plate 7, the bottom end of the third threaded rod 5 is provided with the upper tightening block 6, the bottom supporting seat 31 is arranged at the position of the upper tightening block 6 corresponding to the bottom surface of the groove 3, the bottom spring 32 is arranged on the bottom supporting seat 31, the top end of the bottom spring 32 is provided with the lower tightening block 8, the upper end surface of the, a pressing plate 28 is arranged on the right side of the lower tightening block 8, and the right end of the pressing plate 28 extends out of the right end of the groove 3.

The right end of spring 21 is located the recess 3 between the tight piece 6 of upper portion top and the tight piece 8 of lower part top, and the bottom surface of the tight piece 6 of upper portion top is square distribution, and when third threaded rod 5 when rotatory downwards in third guide tube 4, the tight piece 6 of upper portion top can rotate in recess 3.

That is, the lower holding-up block 8 is in contact with the bottom of the spring 21 without the bottom spring 32 being forced, and the upper holding-up block 6 is sized to rotate within the groove 3 when the upper holding-up block 6 moves into the groove 3 when the third threaded rod 5 is rotated downward along the third guide tube.

Clamping grooves 9-1 are symmetrically dug in the two inner walls of each movable sliding chute 9, and clamping blocks 12-2 are arranged at the positions, corresponding to the clamping grooves 9-1, of the two side surfaces of each sliding block 12-1; the inner wall of the first positioning ring 19 is welded with the outer wall of the end of the pressing rod 18, and the outer diameter of the spring 21 is smaller than the inner diameter of the positioning sleeve 16.

In the above description, the outer sleeve 13 sleeved on the outside of the fixed shaft 15 is equivalent to a shaft sleeve, i.e. the shaft and the shaft sleeve are rotatably connected together; each sliding bottom plate 12 is connected with the corresponding moving chute 9 in a sliding way through a sliding block 12-1.

The working principle is as follows:

1. when the positioning plate is used, a bolt is inserted into the first positioning hole 24 on each positioning plate 2, and the positioning plates are fixed with the ground or a workbench; the position of the sliding bottom plate 12 on the base 1 is adjusted according to the length of the end part of the pipeline to be bent, namely the position of a bending point, and the sliding bottom plate 12 and the base 1, and the vertical plate 10 and the side surface of the base 1 are fixed through a first threaded rod 29-1 and a second threaded rod 30-1;

2. moving the second positioning ring 25 so as to adjust the position of the spring 21 fixed on the pressing rod 18, and fixing the second positioning ring 25 and the pressing rod 18 by inserting the first bolt 27 into the corresponding third positioning hole 26 on the corresponding pressing rod;

3. pressing the pressing plate 28 downwards to sleeve one end of the spool outside the spring 21, inserting the spool into the positioning sleeve 16 to enable the left end of the spool to be positioned at the left end of the spring 21, pressing the upper jacking block 6 at the lower end of the third threaded rod 5 on the outer wall of the spool through the end positioning assembly, and simultaneously compressing the bottom spring 32 below the lower jacking block 8 to the minimum value to enable the spool to be fixed at the right end of the groove 3;

4. the spool is held by a hand and the pressing rod is bent towards the right side by 90 degrees, so that the positioning sleeve and the external sleeve rotate along the fixed shaft 15, and the spool is quickly bent.

According to the invention, one end of the wire pipe to be bent can be fixed by arranging the end positioning component; through sliding bottom plate and base sliding connection together, the second holding ring can move on pressing the depression bar, during the use, can freely adjust the position of sliding bottom plate on the base and the position of spring on pressing the depression bar according to the bending point of spool to reach the effect of accurate bending.