A pipe bending device for mechanical and electrical conduit installations

Abstract

The application discloses a pipe bending device for electromechanical pipe installation, which comprises a wall thickness adjusting structure and a bending structure; the wall thickness adjusting structure comprises an inner support assembly and a peripheral assembly, and a pipe is clamped between the peripheral assembly and the inner support assembly; the peripheral assembly comprises a first push piece group, the first push piece group comprises two first push pieces which are rotated in opposite directions, and the first push pieces are used for abutting against and heating and softening the outer wall of the pipe; the inner support assembly comprises a second push piece group, the second push piece group comprises two second push pieces which are rotated in opposite directions, and the second push pieces are used for abutting against and heating and softening the inner wall of the pipe; a plurality of first push piece groups and a plurality of second push piece groups are arranged in one-to-one correspondence; the first push pieces and the second push pieces each comprise a support rod and a push block, the length of the support rod can be adjusted, the distance between the first push pieces and the second push pieces is adjusted to control the wall thickness of the pipe; and the bending structure is used for bending the pipe whose thickness is adjusted by the wall thickness adjusting structure. The application has the effect of reducing the influence of pipe bending on the wall thickness of the metal pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe bending, and in particular to a pipe bending device for mechanical and electrical pipe installation. BACKGROUND

[0002] In the process of building construction, mechanical and electrical installation is an important branch of construction, and mechanical and electrical installation mainly includes electrical installation engineering, water supply and drainage installation engineering and heating and ventilation installation engineering. In the installation and construction of electrical pipes, water supply and drainage pipes and heating and ventilation pipes, the pipes are usually prefabricated in the factory according to the construction drawings and transported to the site for assembly.

[0003] However, in the actual construction process, due to the complex pipelines of various professions, it is easy to interfere with each other, so that the site construction is difficult to strictly follow the construction drawings. For example, when installing small-diameter pipes in the equipment room, since the horizontal height difference between the original pipe and the equipment water inlet pipe is small, the existing finished small-diameter pipe cannot be installed, and the small-diameter pipe needs to be bent to adjust the pipe installation height; or due to site construction errors, the actual construction does not match the drawings, so that the installation position needs to be adjusted in real time when other pipes are installed, so that the prefabricated pipe is difficult to continue to install, and the pipe needs to be bent to adjust the arrangement path. Therefore, whether it is electrical installation engineering, water supply and drainage installation engineering or heating and ventilation installation engineering, there is a need for on-site bending of metal pipes.

[0004] At present, the pipe bending device is used to realize the bending of the pipe on the construction site, but the bending radius of the pipe bending device is fixed and cannot be adjusted according to the actual situation of the site construction; at the same time, the side wall thickness of the pipe after being bent by the pipe bending device will be thinned, and for the pipe with water conveying demand, if the side wall of the pipe is thinned, the pipe is easy to be broken, thereby causing the leakage phenomenon to occur, which has an adverse effect on the construction quality. SUMMARY

[0005] In order to solve the problem of change of wall thickness of the metal pipe after bending in the process of mechanical and electrical engineering installation, the present application provides a pipe bending device for mechanical and electrical pipe installation.

[0006] The present application provides a pipe bending device for mechanical and electrical pipe installation, which adopts the following technical scheme:

[0007] A pipe bending device for mechanical and electrical pipe installation, comprising a wall thickness adjusting structure and a bending structure;

[0008] The wall thickness adjusting structure comprises an inner support assembly and a peripheral assembly, the peripheral assembly surrounds the inner support assembly, and the pipe is clamped between the peripheral assembly and the inner support assembly;

[0009] The peripheral assembly comprises a first pushing piece group, the first pushing piece group comprises two first pushing pieces rotating in opposite directions, and the first pushing pieces are used for abutting against and heating to soften the outer wall of the pipe;

[0010] The inner supporting assembly comprises a second pushing piece group, the second pushing piece group comprises two second pushing pieces rotating in opposite directions, and the second pushing pieces are used for abutting against and heating to soften the inner wall of the pipe;

[0011] The number of the first pushing piece group and the second pushing piece group is the same, and the first pushing piece group and the second pushing piece group are arranged in one-to-one correspondence;

[0012] The first pushing piece and the second pushing piece each comprise a supporting rod and a pushing block, the length of the supporting rod is adjustable, and the distance between the first pushing piece and the second pushing piece is adjusted to control the wall thickness of the pipe;

[0013] The bending structure is used for bending the pipe whose thickness is adjusted by the wall thickness adjusting structure.

[0014] By adopting the above technical scheme, when the pipe bending device is used to bend the pipe, the wall thickness of the pipe is first adjusted by the wall thickness adjusting structure, so that the wall thickness of the inner bending side of the pipe is thinner and the wall thickness of the outer bending side of the pipe is thicker, and then the pipe is bent by the bending structure, so that the outer bending side of the pipe serves as the outer side wall of the bent pipe and the inner bending side of the pipe serves as the inner side wall of the bent pipe, thereby ensuring that the wall thickness of each part of the bent pipe is equivalent to the wall thickness of the straight pipe;

[0015] Specifically, the pipe is clamped between the peripheral assembly and the inner supporting assembly, when the first pushing piece group and the second pushing piece group clamp the inner bending side of the pipe, the length of the supporting rod is adjusted to shorten the distance between the first pushing piece and the second pushing piece, the pushing block can heat the pipe and soften the side wall of the pipe, so that the wall thickness of the inner bending side of the pipe is the same as the distance between the first pushing piece and the second pushing piece; at this time, the two first pushing pieces move in opposite directions, and the two second pushing pieces move in opposite directions, the length of the supporting rod is adjusted to increase the distance between the first pushing piece and the second pushing piece, the pipe metal material extruded from the thinned inner bending side is moved to the outer bending side of the pipe, so that the wall thickness of the outer bending side is increased, thereby controlling the wall thickness of the pipe;

[0016] The pipe adjusted by the wall thickness adjusting structure is locally heated, so that the subsequent bending structure is more convenient to bend the pipe.

[0017] Optionally, the pipe bending device further comprises a frame body, the frame body comprises a first operation panel and a second operation panel, the wall thickness adjusting structure is installed on the first operation panel, and the bending structure is installed on the second operation panel;

[0018] The second operation panel is rotationally connected with the first operation panel, and the second operation panel can be rotated to be coplanar with the first operation panel and locked.

[0019] By adopting the above technical solutions, the pipeline is more convenient to install between the inner support assembly and the peripheral assembly after the second operation panel is folded, and the second operation panel can be folded and stored, so that the pipe bending device of the present application is more space-saving; after the wall thickness of the pipeline is adjusted by the wall thickness adjusting structure, the pipeline structure strength is low due to heating, and at this time, the second operation panel is unfolded, so that the pipeline can be directly moved from the first operation panel to the second operation panel and subjected to bending treatment.

[0020] Optionally, the peripheral assembly comprises a support cylinder fixed horizontally on the first operation panel, a plurality of first pusher groups can be arranged along the length direction of the support cylinder, a plurality of first sliding channels same in number with the first pusher groups are arranged on the inner wall of the support cylinder along the length direction of the support cylinder, and the plurality of first pusher groups one-to-one correspondingly slide along the plurality of first sliding channels.

[0021] The peripheral assembly further comprises a first driving source for driving the movement of the first pusher.

[0022] By adopting the above technical solutions, a plurality of first pusher groups are arranged along the length direction of the support cylinder, the working number of the first pusher groups can be selected according to the bending length of the pipeline, so as to control the length of the pipeline wall thickness adjustment, and then the wall thickness of the pipeline can be adjusted according to the actual pipe bending demand; the first driving source can drive the movement of each first pusher group, and then the pipeline wall thickness adjustment is realized.

[0023] Optionally, the inner support assembly comprises a center shaft rod, and a first support rod and a second support rod respectively arranged at both ends of the center shaft rod, and the center shaft rod is horizontally arranged in the support cylinder.

[0024] One end of the first support rod is fixedly connected with one end of the center shaft rod, and the other end is fixedly connected with the first operation panel.

[0025] One end of the second support rod is rotationally connected with the end of the center shaft rod away from the first support rod, and the other end can abut against the first operation panel.

[0026] By adopting the technical scheme, the second push rod group on the central shaft rod can be matched with the first push rod group to clamp the extrusion pipeline, so that the wall thickness of the pipeline is adjusted; the first support rod and the second support rod can support the two ends of the central shaft rod, so that the central shaft rod can be stably arranged in the pipeline; when the pipeline is installed to the wall thickness adjustment structure, the second support rod can be rotated relative to the central shaft rod, so that the second support rod and the central shaft rod are collinear, so that the pipeline is sleeved outside the central shaft rod, and then the second support rod is rotated to abut against the first operation panel, so that the support of the central shaft rod is realized through the second support rod.

[0027] Optionally, the central shaft rod is provided with a second sliding channel, two second push rods of the second push rod group move away from each other along a corresponding second sliding channel, and the central shaft rod is provided with a second driving source for driving the second push rods to move.

[0028] By adopting the technical scheme, the two second push rods of each second push rod group can move away from each other along the second sliding channel under the driving of the second driving source, so that the wall thickness of the pipeline is adjusted.

[0029] Optionally, the push block of the first push piece has an arc that protrudes from the support cylinder to the pipeline in the circumferential direction of the support cylinder, and the push block of the second push piece has an arc that protrudes from the central shaft rod to the pipeline in the circumferential direction of the central shaft rod.

[0030] By adopting the technical scheme, the first push piece and the second push piece can abut against the side walls of pipelines with different diameters, so that the pipelines with different diameters can be clamped between the first push piece and the second push piece to meet the wall thickness adjustment of the pipelines with different diameters.

[0031] Optionally, the bending structure comprises a limiting assembly and a bending assembly, the second operation panel comprises an upper layer plate and a lower layer plate which are arranged at intervals, and the upper layer plate is used for placing the pipeline;

[0032] The limiting assembly is installed on the lower layer plate, and the limiting assembly penetrates through the upper layer plate and is used for clamping the pipeline;

[0033] The bending assembly is slidably arranged on the lower layer plate, and the bending assembly penetrates through the upper layer plate and is used for bending the pipeline.

[0034] By adopting the technical scheme, the straight section of the pipeline is clamped between the limiting assemblies, the pipeline is fixed through the limiting assemblies, the part of the pipeline that needs to change the wall thickness is clamped between the bending assemblies, and the pipeline is bent by sliding the bending assemblies.

[0035] Optionally, the limiting assembly comprises a first clamping seat and a second clamping seat, the first clamping seat is fixed to the lower layer plate;

[0036] The first clamping seat and the second clamping seat are connected by a threaded rod between the part between the upper layer plate and the lower layer plate, and a long slot is formed on the upper layer plate for the first clamping seat to slide.

[0037] By adopting the above technical scheme, the threaded rod is rotated to make the second clamping seat slide in the long slot, and then the distance between the first clamping seat and the second clamping seat is adjusted, so that the first clamping seat and the second clamping seat can clamp the pipe with different diameters, and the pipe bending device can process the pipe with different diameters.

[0038] Optionally, the bending assembly comprises a first bending seat and a second bending seat, the first bending seat and the second bending seat are connected by a threaded rod, and the pipe is clamped between the first bending seat and the second bending seat.

[0039] A plurality of bending slots with different bending radii are formed on the upper layer plate, the first bending seat can slide along any one of the bending slots, and a hole is formed on the upper layer plate, and the second bending seat moves in the hole.

[0040] By adopting the above technical scheme, the distance between the first bending seat and the second bending seat can be adjusted by the threaded rod, so that the part of the pipe which needs to change the wall thickness is clamped between the first bending seat and the second bending seat; pushing the first bending seat to slide along one of the bending slots can realize the bending of the pipe; a plurality of bending slots are provided, and the bending radii of the plurality of bending slots are different, so that the pipe bending device can meet the requirements of different bending radii of the pipe.

[0041] Optionally, a water supply pipe is arranged in the side wall of the supporting cylinder, one or more spray heads are arranged on the inner wall of the supporting cylinder, the water supply pipe is communicated with the spray heads and is used for spraying water into the supporting cylinder.

[0042] By adopting the above technical scheme, the pipe wall is softened by the push block, so that the local strength of the pipe is reduced, the spray heads arranged in the supporting cylinder can cool the pipe wall, so that the pipe with changed wall thickness can be cooled as soon as possible to improve the structural strength.

[0043] In summary, the present application has at least one of the following beneficial effects:

[0044] 1. The wall thickness of the metal pipe is adjusted before the pipe is bent, and then the pipe is bent, so that the wall thickness of the bent pipe is relatively uniform, and the local wall thickness of the pipe is reduced after bending, so that the strength is reduced.

[0045] 2. The bending structure of the present application can meet the needs of pipe bending of different pipe diameters and different bending radii, so that the pipe bending device of the present application can meet the needs of metal pipe bending of heating, water supply and drainage, and electrical installation engineering, and has stronger applicability;

[0046] 3. The pipe is adjusted in thickness in the wall thickness adjusting structure, and the bending section is also heated, so that the pipe can be bent more easily when the pipe is bent in the bending structure;

[0047] 4. The spray head for spray cooling is arranged in the support cylinder, so that the pipe can be quickly cooled by spraying after being heated, softened and changed in wall thickness, and the structural strength of the pipe is improved. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is the overall structure schematic diagram of the second operation panel of the embodiment of the present application after being unfolded;

[0049] Figure 2 is the overall structure schematic diagram of the second operation panel of the embodiment of the present application after being folded;

[0050] Figure 3 is the side view of the first pushing piece and the second pushing piece of the embodiment of the present application in the initial state;

[0051] Figure 4 is the side view of the first pushing piece and the second pushing piece of the embodiment of the present application after rotating one circle;

[0052] Figure 5 is the partial structure schematic diagram of the embodiment of the present application for showing the inside of the support cylinder;

[0053] Figure 6 is the top view of the bending structure of the embodiment of the present application.

[0054] Explanation of reference numerals: 1, wall thickness adjusting structure; 11, first pushing piece; 111, supporting rod; 112, pushing block; 12, second pushing piece; 13, support cylinder; 131, first sliding channel; 132, spray head; 14, base; 15, central shaft; 151, second sliding channel; 16, first supporting rod; 17, second supporting rod; 18, first supporting piece; 181, telescopic rod; 182, supporting block; 19, second supporting piece; 2, bending structure; 21, first clamping seat; 22, second clamping seat; 23, first bending seat; 24, second bending seat; 25, threaded rod; 3, frame body; 31, first operation panel; 32, second operation panel; 321, upper layer plate; 3211, long groove; 3212, curved groove; 3213, hole; 322, lower layer plate; 4, pipe; 41, inside bending side; 42, outside bending side. DETAILED DESCRIPTION

[0055] The application will be further described below in conjunction with the accompanying drawings. Figures 1-6 The application will be further described below in conjunction with the accompanying drawings.

[0056] The application discloses a pipe bending device for electromechanical pipeline installation. Figure 1 and Figure 2 The pipe bending device for electromechanical pipeline installation comprises a frame body 3, the frame body 3 comprises a first operation panel 31 and a second operation panel 32, the second operation panel 32 is rotationally connected with the first operation panel 31, and the second operation panel 32 can be rotated to be coplanar with and locked with the first operation panel 31 or can be folded relative to the first operation panel 31.

[0057] The application discloses a pipe bending device for electromechanical pipeline installation. Figure 1 and Figure 2 The wall thickness adjusting structure 1 can be used for adjusting the wall thickness of the pipeline 4, and the bending structure 2 is used for bending the pipeline 4. When the pipeline 4 is installed on the wall thickness adjusting structure 1, the second operation panel 32 is folded relative to the first operation panel 31, and when the wall thickness adjustment of the pipeline 4 is completed, the second operation panel 32 is unfolded to be coplanar with the first operation panel 31, and the pipeline 4 is directly moved to the second operation panel 32 for bending treatment, which is convenient and fast.

[0058] The application discloses a pipe bending device for electromechanical pipeline installation. Figure 1 and Figure 2 The wall thickness adjusting structure 1 comprises an inner supporting assembly and a peripheral assembly. The peripheral assembly comprises a base 14 and a horizontally placed supporting cylinder 13, and the supporting cylinder 13 is fixed on the first operation panel 31 through the base 14. The inner supporting assembly comprises a central shaft 15 and first and second supporting rods 16 and 17 arranged at two ends of the central shaft 15 respectively, the central shaft 15 is horizontally arranged in the supporting cylinder 13 and coaxially arranged with the supporting cylinder 13, and the first and second supporting rods 16 and 17 are located outside the supporting cylinder 13. Specifically, the first supporting rod 16 is fixed perpendicularly on the first operation panel 31, and one end of the first supporting rod 16, which is away from the first operation panel 31, is fixedly connected with one end of the central shaft 15. One end of the second supporting rod 17 is rotationally connected with one end of the central shaft 15, which is away from the first supporting rod 16, and the other end of the second supporting rod 17 can abut against the surface of the first operation panel 31 perpendicularly. An inclined groove is formed in the first operation panel 31, and the end surface of the second supporting rod 17, which is used for abutting against the first operation panel 31, is provided with an inclined surface. When the second supporting rod 17 is rotated, the inclined surface can be attached to and abut against the side wall of the inclined groove, and at this time, the second supporting rod 17 is perpendicular to the surface of the first operation panel 31.

[0059] The application discloses a pipe bending device for electromechanical pipeline installation. Figure 1 and Figure 2, the pipe 4 is clamped between the inner support assembly and the peripheral assembly, when installing the pipe 4, first rotate the second support rod 17 to make the second support rod 17 collinear with the central shaft rod 15, at this time the pipe 4 is sleeved on the outside of the central shaft rod 15; after the pipe 4 is installed between the inner support assembly and the peripheral assembly, the second support rod 17 is rotated again to make the inclined surface of the second support rod 17 abut against the side wall of the inclined groove of the first operation panel 31, at this time the central shaft rod 15 can be stably supported by the first support rod 16 and the second support rod 17.

[0060] With reference to Figure 2 and Figure 3 , the peripheral assembly further comprises a plurality of groups of first pushing pieces arranged along the length direction of the support cylinder 13, and a plurality of first sliding channels 131 are arranged on the inner wall of the support cylinder 13 along the length direction, and the plurality of groups of first pushing pieces are slidingly arranged in the plurality of first sliding channels 131 one by one. The inner support assembly further comprises a plurality of groups of second pushing pieces arranged along the length direction of the central shaft rod 15, and a plurality of second sliding channels 151 are arranged on the central shaft rod 15 along the length direction, and the plurality of groups of second pushing pieces are slidingly arranged in the plurality of second sliding channels 151 one by one, and the plurality of groups of first pushing pieces and the plurality of groups of second pushing pieces are arranged one by one. The first pushing piece group comprises two first pushing pieces 11, and the second pushing piece group comprises two second pushing pieces 12, and the first pushing piece 11 and the second pushing piece 12 each comprise a support rod 111 and a pushing block 112; one end of the support rod 111 is movable along the first sliding channel 131 or the second sliding channel 151, and the other end is fixed with the pushing block 112, and the support rod 111 is designed as an electric telescopic rod 181; the pushing block 112 is preferably in a strip shape, and the length axis of the pushing block 112 is parallel to the length direction of the central shaft rod 15, and a heating device is arranged in the pushing block 112, and the heating device can heat and warm the side wall of the pipe 4 close to the pushing block 112, and a heat insulation layer is arranged on the side of the pushing block 112 close to the support rod 111, and the heating temperature of the heating device can reach the temperature at which the pipe 4 made of metal material is softened, and the specific heating device can be an electric heating wire, and the pipe 4 is clamped between the pushing block 112 of the peripheral assembly and the pushing block 112 of the inner support assembly.

[0061] With reference to Figure 3 and Figure 4 , the peripheral assembly further comprises a first driving source, and the first driving source is used to drive the two first pushing pieces 11 in each group of first pushing pieces to move away from each other; and the inner support assembly further comprises a second driving source, and the second driving source is used to drive the two second pushing pieces 12 in each group of second pushing pieces to move away from each other.

[0062] With reference to Figure 2 and Figure 3, the wall thickness adjustment structure 1 can realize the adjustment of the wall thickness of the pipeline 4. In one embodiment, a metal pipeline 4 with an outer diameter of 200 mm and a wall thickness of 3 mm is to be bent, and the smaller side of the bend radius of the bent pipe formed after the metal pipeline 4 is bent is defined as the inner bend side 41, and the larger side of the bend radius is defined as the outer bend side 42. By adjusting the length of the support rod 111, the wall thickness adjustment structure 1 of the present application can clamp metal straight pipelines 4 of different diameters.

[0063] Referring to Figure 3 and Figure 4 When the pipeline 4 is clamped in the inner support assembly and the peripheral assembly, in one embodiment, the cross section of the metal pipeline 4 is equally divided into six parts, one part is the inner bend side 41, and the opposite part is the outer bend side 42. At this time, any one of the first push piece group abuts against the outer wall of the inner bend side 41, and the corresponding second push piece group abuts against the inner wall of the inner bend layer.

[0064] Referring to Figure 3 and Figure 4 , the pipe bending device further comprises a control system capable of controlling the support rod 111 to adjust its length, thereby adjusting the distance between the push block 112 of the first push piece group and the push block 112 of the second push piece group; the control system can set the final thickness of each part of the pipeline 4, and in this embodiment, the thickness of the inner bend side 41 is set to 2.6 mm, the thickness of the outer bend side 42 is set to 3.4 mm, and the thickness of the remaining part is set to 3 mm. Taking the operation of one set of corresponding first push piece group and second push piece group as an example, the two first push pieces 11 of the first push piece group are close together and abut against the outer wall of the inner bend side 41 in the initial state, and the two second push pieces 12 of the second push piece group are close together and abut against the inner wall of the inner bend side 41 in the initial state. The two first push pieces 11 are driven to move away from each other by the first driving source, and the two second push pieces 12 are simultaneously driven to move away from each other by the second driving source. Since the push block 112 can heat the pipeline 4 to soften, the wall thickness of the inner bend side 41 is thinned under the extrusion of the two push blocks 112, and the excess metal material is pushed to the outer bend side 42, until the two first push pieces 11 and the two second push pieces 12 are close together at the outer bend side 42 after rotating one circle; at this time, the wall thickness of the inner bend side 41 is thinned to 2.6 mm, the wall thickness of the outer bend side 42 is thickened to 3.4 mm, and the wall thickness of the remaining part remains unchanged.

[0065] Referring to Figure 4 and Figure 5In order to make the pushing block 112 applicable to the wall thickness adjustment of the metal pipe 4 regardless of the diameter, when designing the pushing block 112, the pushing block 112 on the first pushing piece 11 has a convex arc along the circumference of the supporting cylinder 13 from the inner wall of the supporting cylinder 13 to the pipe 4, and the pushing block 112 on the second pushing piece 12 has a convex arc along the circumference of the central shaft 15 from the central shaft 15 to the pipe 4.

[0066] With reference to Figure 3 The supporting cylinder 13 is further provided with a cavity in the side wall, and a water supply pipe is arranged in the cavity and communicates with the water supply end. The inner wall of the supporting cylinder 13 is further provided with one or more spray heads 132, which can uniformly spray the liquid in the water supply pipe into the supporting cylinder 13 in the form of mist, so as to achieve cooling in the supporting cylinder 13. Since the pushing block 112 can locally soften and adjust the wall thickness of the pipe 4, after the wall thickness adjustment is completed, the softened part of the metal pipe 4 can be cooled as soon as possible through cooling, so as to quickly improve the strength of the metal pipe 4, and the pipe 4 can be more conveniently moved to the bending structure for bending after the wall thickness adjustment is completed.

[0067] With reference to Figure 5 The first pushing piece group and the second pushing piece group are provided with a plurality of groups along the length direction of the central shaft 15, and the number of groups of the first pushing piece group and the second pushing piece group can be adjusted according to the bending requirement of the pipe 4, so as to adjust the length of the pipe wall thickness adjustment section; the first pushing piece group and the second pushing piece group which are not in operation can still support the pipe 4. At the same time, in order to make the metal material of the pipe 4 move along the set track, the pushing blocks 112 of adjacent two first pushing piece groups or adjacent two second pushing piece groups are connected end to end.

[0068] With reference to Figure 5 In order to weaken the supporting function of the first pushing piece group and the second pushing piece group, a plurality of supporting assemblies can be arranged along the length direction of the supporting cylinder 13 at positions close to both ends of the supporting cylinder 13. The supporting assembly includes an inner supporting assembly and an outer supporting assembly. The outer supporting assembly includes a plurality of first supporting pieces 18 fixedly arranged at intervals around the inner wall of the supporting cylinder 13, and the inner supporting assembly includes a plurality of second supporting pieces 19 fixedly arranged at intervals around the circumference of the central shaft 15. The first supporting piece 18 and the second supporting piece 19 each include an extension rod 181 and a supporting block 182. The shape of the supporting block 182 is consistent with that of the pushing block 112, but the volume of the supporting block 182 is greater than that of the pushing block 112, so as to more stably support the pipe 4. One end of the extension rod 181 is fixedly connected with the supporting block 182, and the other end is fixedly connected with the inner wall of the central shaft 15 or the supporting cylinder 13. The control system can also control the length of the extension rod 181 of the first supporting piece 18 and the second supporting piece 19, so that the first supporting piece 18 and the second supporting piece 19 can stably support the pipe.

[0069] With reference to Figure 1 and Figure 6, the pipeline 4 treated by the wall thickness adjusting structure 1 is moved to the bending structure 2 for bending, and due to the residual heat of the pipeline 4 after being treated by the wall thickness adjusting structure 1, the bending structure 2 is more labor-saving when bending the pipeline 4. The second operation panel 32 comprises an upper layer plate 321 and a lower layer plate 322, and the upper layer plate 321 and the lower layer plate 322 are arranged in a spaced manner. The bending structure 2 comprises a limiting assembly and a bending assembly. Specifically, the limiting assembly comprises a first clamping seat 21 and a second clamping seat 22. One end of the first clamping seat 21 is fixed on the lower layer plate 322, and the other end penetrates through the upper layer plate 321, and the part of the first clamping seat 21 above the upper layer plate 321 is used for clamping the pipeline 4. A long slot 3211 is formed in the upper layer plate 321, and the second clamping seat 22 is placed on the lower layer plate 322 and penetrates through the long slot 3211, and the part of the second clamping seat 22 above the upper layer plate 321 is in sliding contact with the upper layer plate 321 on the side of the long slot 3211. A threaded rod 25 is threadedly connected between the first clamping seat 21 and the second clamping seat 22, and the threaded rod 25 is horizontally arranged between the upper layer plate 321 and the lower layer plate 322, and the length direction of the threaded rod 25 is parallel to the extension direction of the long slot 3211. By rotating the threaded rod 25, the second clamping seat 22 can be driven to slide in the long slot 3211, so as to adjust the distance between the first clamping seat 21 and the second clamping seat 22, so that the limiting assembly can clamp and fix pipelines with different diameters.

[0070] With reference to Figure 1 and Figure 6 , the bending assembly comprises a first bending seat 23 and a second bending seat 24, the first bending seat 23 and the second bending seat 24 are of the same structure as the first clamping seat 21, and a threaded rod 25 is also connected between the first bending seat 23 and the second bending seat 24 between the upper layer plate 321 and the lower layer plate 322, and the distance between the first bending seat 23 and the second bending seat 24 can be adjusted by the threaded rod 25. A plurality of bending slots 3212 for sliding of the first bending seat 23 are formed in the upper layer plate 321, the bending radii of the plurality of bending slots 3212 are different, and the bending angle of each bending slot 3212 is preferably 180 degrees, and can also be other bending angles, and in the drawings of the present application, the bending angle is 90 degrees. A hole 3213 for sliding of the second bending seat 24 is also formed in the upper layer plate 321, and the area of the hole 3213 is formed in the range of the spacing adjustment of the first bending seat 23 and the second bending seat 24, and the hole 3213 is formed according to the sliding of the second bending seat 24 regardless of the sliding of the first bending seat 23 in which bending slot 3212.

[0071] With reference to Figure 1 and Figure 6When the pipe 4 is bent by the bending structure 2, first, the section of the pipe 4 that does not need to be bent is placed between the first clamping seat 21 and the second clamping seat 22, the distance between the first clamping seat 21 and the second clamping seat 22 is adjusted by rotating the threaded rod 25, so that the pipe 4 is clamped between the first clamping seat 21 and the second clamping seat 22; at the same time, the distance between the first bending seat 23 and the second bending seat 24 is adjusted, and the section of the pipe 4 that needs to be bent is clamped between the first bending seat 23 and the second bending seat 24. When the pipe 4 is clamped between the first bending seat 23 and the second bending seat 24, the inner bending side 41 is close to the first bending seat 23, and the outer bending side 42 is close to the second bending seat 24. According to the bending requirement, the sliding track of the first bending seat 23 is selected, the first bending seat 23 is pushed to move along one of the bending grooves 3212, thereby realizing the bending of the pipe 4. Since in the mechanical and electrical installation construction, the diameter of the metal pipe 4 is usually in the range of 50mm-250mm, therefore, by reasonably setting the length of the threaded rod 25 and the long groove 3211, the bending structure 2 of the present application can meet the bending requirements of pipes 4 of different diameters in various installation professions, and by selecting different bending grooves 3212, different bending radii of the pipe 4 can be realized, thereby meeting different bending requirements.

[0072] The implementation principle of the pipe bending device for mechanical and electrical pipe installation in the embodiment of the present application is as follows: first, the wall thickness of the pipe 4 is adjusted by the wall thickness adjusting structure 1, so that the wall thickness of the inner bending side 41 of the pipe 4 is thinned, and the wall thickness of the outer bending side 42 is thickened; then the pipe 4 is installed to the bending structure 2, and the pipe 4 is bent by the bending structure 2. After the pipe 4 is bent, the wall thickness of the inner bending side 41 is thickened, and the wall thickness of the outer bending side 42 is thinned, which can offset the change in wall thickness of the pipe 4 when it is in the wall thickness adjusting structure 1, so that the metal pipe 4 can still maintain a relatively uniform thickness after bending, and the wall thickness of the outer bending side 42 is as thick as possible.

[0073] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A pipe bending device for use in mechanical pipe installation, characterized by: The wall thickness adjusting structure (1) and the bending structure (2) are included. The wall thickness adjusting structure (1) includes an inner support assembly and a peripheral assembly, the peripheral assembly surrounds the outer side of the inner support assembly, and a pipe (4) is clamped between the peripheral assembly and the inner support assembly. The peripheral assembly includes a first push piece group, the first push piece group includes two first push pieces (11) rotating in opposite directions, and the first push pieces (11) are used for abutting against the outer wall of the pipe (4) and heating and softening the pipe (4). The inner support assembly includes a second push piece group, the second push piece group includes two second push pieces (12) rotating in opposite directions, and the second push pieces (12) are used for abutting against the inner wall of the pipe (4) and heating and softening the pipe (4). The number of the first push piece group and the second push piece group is the same, and a plurality of first push piece groups and a plurality of second push piece groups are arranged one by one. The first push piece (11) and the second push piece (12) each include a support rod (111) and a push block (112), the length of the support rod (111) can be adjusted, the distance between the first push piece (11) and the second push piece (12) is adjusted to control the wall thickness of the pipe (4). The bending structure (2) is used for bending the pipe (4) whose thickness is adjusted by the wall thickness adjusting structure (1).

2. A bend device for mechanical and electrical conduit installation according to claim 1, characterized in that: The pipe bending device further includes a frame body (3), the frame body (3) includes a first operation panel (31) and a second operation panel (32), the wall thickness adjusting structure (1) is installed on the first operation panel (31), and the bending structure (2) is installed on the second operation panel (32). The second operation panel (32) is rotationally connected with the first operation panel (31), and the second operation panel (32) can be rotated to be coplanar with the first operation panel (31) and locked.

3. A bend device for mechanical and electrical conduit installation according to claim 2, characterized in that: The peripheral assembly includes a support cylinder (13) fixed horizontally on the first operation panel (31), a plurality of first push piece groups can be arranged along the length direction of the support cylinder (13), and a plurality of first sliding channels (131) with the same number as the first push piece groups are arranged on the inner wall of the support cylinder (13) along the length direction of the support cylinder (13), and the plurality of first push piece groups slide along the plurality of first sliding channels (131) one by one. The peripheral assembly further includes a first driving source for driving the first push piece (11) to move.

4. A bend device for mechanical and electrical conduit installation according to claim 3, characterized in that: The inner support assembly includes a central shaft (15), a first support rod (16) and a second support rod (17) arranged at two ends of the central shaft (15) respectively, and the central shaft (15) is horizontally arranged in the support cylinder (13). One end of the first support rod (16) is fixedly connected with one end of the central shaft (15), and the other end is fixed to the first operation panel (31). One end of the second support rod (17) is rotationally connected with the end of the central shaft (15) away from the first support rod (16), and the other end can abut against the first operation panel (31).

5. A bend device for mechanical and electrical conduit installation according to claim 4, characterized in that: The center shaft rod (15) is provided with a second sliding channel (151), and the two second pushing pieces (12) of the second pushing piece group move in opposite directions along a corresponding second sliding channel (151).

6. A bend device for mechanical and electrical conduit installations according to claim 4, characterized in that: The pushing block (112) of the first pushing piece (11) has an arc protruding from the support cylinder (13) to the pipeline (4) in the circumferential direction of the support cylinder (13), and the pushing block (112) of the second pushing piece (12) has an arc protruding from the center shaft rod (15) to the pipeline (4) in the circumferential direction of the center shaft rod (15).

7. A bend device for mechanical and electrical conduit installations according to claim 3, characterized in that: The bending structure (2) comprises a limiting assembly and a bending assembly, the second operation panel (32) comprises an upper layer plate (321) and a lower layer plate (322) arranged at intervals, and the upper layer plate (321) is used for placing the pipeline (4); The limiting assembly is installed on the lower layer plate (322), and the limiting assembly penetrates through the upper layer plate (321) and is used for clamping the pipeline (4); The bending assembly is slidably arranged on the lower layer plate (322), and the bending assembly penetrates through the upper layer plate (321) and is used for bending the pipeline (4).

8. A bend device for mechanical and electrical conduit installation according to claim 7, characterized in that: The limiting assembly comprises a first clamping seat (21) and a second clamping seat (22), and the first clamping seat (21) is fixed to the lower layer plate (322); The first clamping seat (21) and the second clamping seat (22) are connected by a threaded rod (25) between the part between the upper layer plate (321) and the lower layer plate (322), and a long groove (3211) is formed in the upper layer plate (321) for sliding of the first clamping seat (21).

9. A bend device for mechanical and electrical conduit installation according to claim 7, characterized in that: The bending assembly comprises a first bending seat (23) and a second bending seat (24), and the first bending seat (23) and the second bending seat (24) are connected by a threaded rod (25), and the pipeline (4) is clamped between the first bending seat (23) and the second bending seat (24); A plurality of bending grooves (3212) with different bending radii are formed in the upper layer plate (321), the first bending seat (23) can slide along any one of the bending grooves (3212), and a hole (3213) is also formed in the upper layer plate (321), and the second bending seat (24) moves in the hole (3213).

10. A bend device for mechanical and electrical conduit installation according to claim 4, characterized in that: A water supply pipe is arranged in the side wall of the support cylinder (13), one or more spray heads (132) protrude from the inner wall of the support cylinder (13), the water supply pipe is communicated with the spray head (132) and is used for spraying in the support cylinder (13).

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