Pipe bending equipment for building construction

Abstract

The pipe bending equipment for building construction comprises a bending rack assembly and an inner supporting mechanism, and the bending rack assembly comprises a main rack, a pipe bending rack and two storage racks; wherein the pipe bending machine frame is installed on one side of the main machine frame, the two storage racks are installed and connected to the inner side wall of the main machine frame, the inner supporting mechanism is installed on one side of one storage rack, and the inner supporting driving mechanism is installed on the other side of the storage rack; a pipe needing to be bent is arranged on the outer side wall of the inner supporting mechanism in a sleeving mode, then the inner supporting mechanism is driven by the inner supporting driving mechanism to contract, the outer diameter of the inner supporting mechanism is changed, the inner supporting mechanism is made to be fully attached to the inner wall of the pipe, and therefore when the pipe is bent through the pipe bending mechanism, the bending efficiency is improved. The inner supporting mechanism can be used for supporting the inner wall of the pipe, the deformation problems of collapse, ellipticity, wrinkling and the like of the pipe in the bending process are avoided, and the bending effect is improved.

Description

Technical Field

[0001] This invention relates to a pipe bending device, specifically a pipe bending device for building construction, and belongs to the field of pipe bending technology. Background Technology

[0002] Pipe bending is one of the plastic processing methods for building materials in construction. It mainly involves bending building pipes into specific angles or arcs according to actual and design requirements to adapt to the installation and structural needs of the construction site. Portable pipe bending machines, manual pipe bending tools, or small hydraulic pipe bending equipment are usually used, combined with the experience of the operators, to complete the bending operation. However, since on-site bending often lacks the precise control of the factory environment, more attention should be paid to the control of bending angle and radius and the protection of pipes to avoid cracks and deformation that would reduce the strength of the pipes.

[0003] A Chinese patent entitled "Adjustable Angle Bending Machine for Building Pipes" (patent number ZL202510734554.2) discloses an adjustable angle bending machine technology. On the one hand, it can process pipe parts into smoothly transitioned arc-shaped pipes according to actual needs in a relatively flexible operation mode, which is suitable for different bending requirements of building pipes for different purposes. On the other hand, it can automatically select the corresponding rollers according to the shape or cross-sectional shape of the pipe. However, although this pipe bending machine has the characteristics of multiple functions and wide applicability, the bending method it uses is the same as that of traditional bending machines. Both use roller extrusion to forcibly bend the pipe. Because the inner wall of the pipe lacks support during the bending process, the pipe is very prone to deformation problems such as collapse, ellipticization, and wrinkling under pressure, especially for pipes with thin walls.

[0004] Chinese patent titled "A Material Bending Device for Building Construction" (patent number ZL202410661428.4) discloses a material bending technology for building construction. It uses an internal support mechanism to insert a support structure into the interior of the pipe, thereby improving the bending effect when the pipe's bending radius is small. However, although this bending device has a pipe wall support structure, its support structure mainly consists of an inner support plate and a rubber sleeve. The overall outer diameter of the support structure is fixed, limiting its applicability to bending only a single specification of pipe and failing to meet the bending needs of different pipe specifications in building construction. Therefore, a pipe bending device for building construction is proposed. Summary of the Invention

[0005] In view of this, the present invention provides a pipe bending device for building construction to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial alternative.

[0006] The technical solution of this invention is implemented as follows: a pipe bending device for building construction, including a bending frame assembly and an internal support mechanism, wherein the bending frame assembly includes a main frame, a pipe bending frame and two storage racks; The pipe bending machine frame is installed on one side of the main frame, the two shelves are both installed and connected to the inner side wall of the main frame, the inner support mechanism is installed on one side of one shelf, the inner support drive mechanism is installed on the other side of the shelf, and the pipe bending mechanism is installed on the inner side wall of the pipe bending machine frame. The internal support mechanism adopts a telescopic snake bone structure, which can bend and deform in the direction of the pipe bending. The inner support drive mechanism is used to drive the inner support mechanism to retract, thereby changing the outer diameter of the inner support mechanism so that it fully fits the inner wall of the pipe. The pipe bending mechanism uses roller pressing to bend the pipe and can adjust the inner diameter of the pipe bending by lifting.

[0007] More preferably, the internal support mechanism includes a snake bone end seat, a snake bone end head, several snake bone main frames, several snake bone grooves, several snake bone sliders, several annular portions, several rubber liners, and several armored woven meshes. The snake-bone end seat is installed on one side of one of the shelves, the snake-bone end is located on one side of the snake-bone end seat, a plurality of snake-bone main frames are hinged between the snake-bone end seat and the snake-bone end, a plurality of snake-bone sliding grooves are respectively opened on one side of the outer wall of the plurality of snake-bone main frames, and a plurality of snake-bone sliders are respectively fixedly connected to the other side of the outer wall of the plurality of snake-bone main frames. The outer wall of the snake-bone slider is slidably connected to the inner wall of the snake-bone sliding groove, so that the plurality of snake-bone main frames can be extended and adjusted while being hinged to each other in pairs.

[0008] More preferably, several of the annular portions are respectively disposed in the middle of the outer side wall of several snake-bone main frames, and several of the rubber linings and armored woven meshes are respectively fixedly connected between each pair of several annular portions, with the armored woven meshes covering the outer side wall of the rubber linings.

[0009] More preferably, the internal support drive mechanism includes a side bracket, a hollow hydraulic cylinder, and a traction steel rope; The side bracket is installed on the other side of the shelf, the hollow hydraulic cylinder is installed between the side bracket and the shelf, one end of the traction steel rope is detachably installed on one end of the piston rod of the hollow hydraulic cylinder, and the other end of the traction steel rope passes through the hollow hydraulic cylinder, the shelf, the snake bone end seat and the snake bone main frame and is fixedly connected to one end of the snake bone end, for pulling the snake bone end to drive the snake bone main frame to retract as a whole.

[0010] More preferably, the pipe bending mechanism includes a pipe bending frame, a third reduction motor, a lifting frame, an inner slide, a rodless cylinder, a first hydraulic cylinder, several pipe bending support wheels, and a pipe bending drive wheel; The pipe bending frame is rotatably connected to the bottom of the inner wall of the pipe bending machine frame. The third reduction motor is installed at the bottom of the inner wall of the pipe bending machine frame to drive the entire pipe bending frame to rotate around the output shaft of the third reduction motor. The rodless cylinder is installed on the top of one side of the pipe bending machine frame. The lifting frame is installed at the output end of the rodless cylinder. Several pipe bending support wheels are hinged to one side of the inner wall of the lifting frame and connected by torsion springs to reset the pipe bending support wheels after torsion.

[0011] More preferably, the inner slide is slidably connected to the top of the inner sidewall of the pipe bending frame, the first hydraulic cylinder is installed on one side of the pipe bending frame, one end of the piston rod of the first hydraulic cylinder is fixedly connected to one side of the inner slide, and is used to drive the inner slide to slide inside the pipe bending frame. The pipe bending drive wheel is fixedly connected to one side of the inner sidewall of the inner slide, and the pipe bending drive wheel is adapted to the pipe bending support wheel.

[0012] More preferably, a manual adjustment mechanism is installed in the middle of one side of the main frame. The manual adjustment mechanism includes a first housing, a first worm gear, a first worm, a handle, a central screw, and a first threaded sleeve. The first housing is fixedly connected to one side of the pipe bending machine frame. The first worm gear is rotatably connected to the inner wall of the first housing. The first worm is rotatably connected to the top of the inner wall of the first housing. The outer wall of the first worm gear meshes with the outer wall of the first worm. One end of the handle passes through the inner wall of the first housing and is fixedly connected to one end of the first worm. One end of the central screw is fixedly connected to one end of the first worm gear. The other end of the central screw is rotatably connected to one side of the inner wall of the pipe bending machine frame. The outer wall of the first threaded sleeve is fixedly connected to the inner wall of one of the shelves. The inner wall of the first threaded sleeve is threadedly connected to the outer wall of the central screw.

[0013] More preferably, a primary clamping mechanism is installed on the outer side of another of the shelves. The primary clamping mechanism includes a second housing, a first reduction motor installed on the top of one side of the second housing, a second worm gear fixedly connected to the output end of the first reduction motor, a second worm wheel disk rotatably connected inside the second housing, a planar threaded portion provided on one side of the second worm wheel disk, three trapezoidal clamping blocks slidably connected to the inner wall of the second housing, and a belt drive mechanism installed on one side of the second housing. Wherein, the end of the second worm gear away from the first geared motor is rotatably connected to one side of the inner wall of the second housing, the outer wall of the second worm gear is meshed with the outer wall of the second worm wheel, and one side of each of the three trapezoidal clamping blocks is threadedly connected to the planar threaded portion. The belt drive mechanism includes a second reduction motor, a belt drive component, and a second threaded sleeve. The second geared motor is installed on one side of the inner wall of the other shelf, the second threaded sleeve is rotatably connected to the inner wall of the other shelf, the inner wall of the second threaded sleeve is threadedly connected to the outer wall of the central screw, and the belt drive is installed between the output shaft of the second geared motor and one end of the second threaded sleeve, so as to cooperate with the power of the output shaft of the second geared motor to drive the second threaded sleeve to rotate, thereby driving the shelf to reciprocate along the central screw axis.

[0014] More preferably, a secondary pipe clamping mechanism is slidably connected to one side of the upper surface of the pipe bending machine frame. The secondary pipe clamping mechanism includes a support slide that slides on one side of the pipe bending machine frame, two second hydraulic cylinders symmetrically installed inside the support slide, two square clamping blocks symmetrically sliding on the top of the inner wall of the support slide, a rack fixedly connected to the bottom of one side of the support slide, a gear fixedly connected between the output shaft of the third reduction motor and the pipe bending machine frame, two guide rails symmetrically fixedly connected to the surface of the pipe bending machine frame, and a number of guide wheels rolling in the guide rails. The piston rods of the two second hydraulic cylinders are respectively fixedly connected to one side of the two square clamping blocks, which are used to drive the square clamping blocks to slide back and forth in the support slide. One side of the rack is meshed with the outer wall of the gear, which is used to drive the support slide to move back and forth along the direction of the rack by the power of the output shaft of the third reduction motor. Several guide wheels are installed on the bottom of the inner side wall of the support slide, which are used to roll in the guide rail to guide the support slide.

[0015] More preferably, the outer side of the belt drive component is provided with a dust cover, which is installed on one side of another shelf.

[0016] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions: I. This invention involves placing the pipe to be bent onto the outer wall of the inner support mechanism, and then driving the inner support mechanism to contract, thereby changing the outer diameter of the inner support mechanism so that it fully fits the inner wall of the pipe. This allows the inner support mechanism to provide support for the inner wall of the pipe when it is bent by the pipe bending mechanism, preventing deformation problems such as collapse, ellipticization, and wrinkling of the pipe during the bending process, thus improving the bending effect.

[0017] Second, the present invention can control the degree of contraction of the inner support mechanism through the inner support drive mechanism, so as to control the outer diameter of the inner support mechanism, thereby fitting and supporting the pipe wall with different inner diameters to meet the bending requirements of pipes of different specifications. Furthermore, the inner diameter of the pipe can be adjusted by lifting through the bending mechanism, so as to bend pipes with different angles or arcs according to actual needs.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is an isometric view of the snake bone end seat and snake bone end of the present invention; Figure 4 This is a cross-sectional structural diagram of the snake-bone main frame of the present invention; Figure 5 This is an isometric view of the snake-bone main frame of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of area A structure; Figure 7 This is a cross-sectional view of the first housing of the present invention; Figure 8 This is an isometric view of the pipe bending machine frame of the present invention; Figure 9 This is a cross-sectional view of the pipe bending machine frame of the present invention; Figure 10 This is a cross-sectional view of the support carriage of the present invention; Figure 11 This is a cross-sectional view of the pipe bending frame of the present invention; Figure 12 This is an isometric view of the support carriage of the present invention; Figure 13 This is a cross-sectional view of the second housing of the present invention; Figure 14 This is an isometric view of the second housing of the present invention; Figure 15 This is an isometric view of the second worm gear disk of the present invention.

[0021] Reference numerals: 1. Bending machine frame assembly; 2. Internal support mechanism; 3. Internal support drive mechanism; 4. Manual adjustment mechanism; 5. Primary pipe clamping mechanism; 6. Pipe bending mechanism; 7. Secondary pipe clamping mechanism; 101. Main frame; 102. Pipe bending machine frame; 103. Shelf; 201. Snake bone end seat; 202. Snake bone end; 203. Snake bone main frame; 204. Snake bone slide groove; 205. Snake bone slider; 206. Annular part; 207. Rubber liner; 208. Armored woven mesh; 301. Side support; 302. Hollow hydraulic cylinder; 303. Traction steel rope; 401. First housing; 402. First worm gear; 403. First worm; 404. Handle; 405. Central screw; 406. First threaded sleeve; 5 01. Second housing; 502. First geared motor; 503. Second worm gear; 504. Second worm wheel disc; 505. Flat threaded part; 506. Trapezoidal clamping block; 507. Belt drive mechanism; 571. Second geared motor; 572. Belt drive component; 573. Second threaded sleeve; 602. Pipe bending frame; 603. Third geared motor; 604. Lifting frame; 605. Inner slide; 606. Rodless cylinder; 607. First hydraulic cylinder; 608. Pipe bending support wheel; 609. Pipe bending drive wheel; 701. Support slide; 702. Second hydraulic cylinder; 703. Square clamping block; 704. Rack; 705. Gear; 706. Guide rail; 707. Guide wheel; 91. Dust cover; 92. Pipe fitting. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0023] It is important to note that terms such as "first," "second," "symmetric," and "array" are used only to distinguish between descriptive and positional descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified with terms such as "first" or "symmetric" may explicitly or implicitly include one or more of that feature; similarly, when the quantity of certain features is not limited by words such as "two" or "three," it should be noted that such features also explicitly or implicitly include one or more features.

[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0025] like Figure 1As shown, this embodiment of the invention provides a pipe bending device for building construction, including a bending frame assembly 1 and an inner support mechanism 2. The bending frame assembly 1 includes a main frame 101, a pipe bending frame 102 and two storage racks 103. Among them, the pipe bending machine frame 102 is installed on one side of the main frame 101, the two shelves 103 are both installed and connected to the inner side wall of the main frame 101, the inner support mechanism 2 is installed on one side of one shelf 103, the inner support drive mechanism 3 is installed on the other side of the shelf 103, and the pipe bending mechanism 6 is installed on the inner side wall of the pipe bending machine frame 102. Among them, the inner support mechanism 2 adopts a telescopic snake bone structure, which can bend and deform in the direction of pipe bending; Among them, the inner support drive mechanism 3 is used to drive the inner support mechanism 2 to retract, thereby changing the outer diameter of the inner support mechanism 2 so that it fully fits the inner wall of the pipe. The pipe bending mechanism 6 uses roller pressing to bend the pipe and can adjust the inner diameter of the pipe bending by lifting.

[0026] like Figures 2-6 As shown, in one embodiment, the inner support mechanism 2 includes a snake bone end seat 201, a snake bone end head 202, a plurality of snake bone main frames 203, a plurality of snake bone grooves 204, a plurality of snake bone sliders 205, a plurality of annular portions 206, a plurality of rubber liners 207 and a plurality of armored woven meshes 208. The snake-bone end seat 201 is installed on one side of a shelf 103, the snake-bone end head 202 is located on one side of the snake-bone end seat 201, several snake-bone main frames 203 are hinged between the snake-bone end seat 201 and the snake-bone end head 202, several snake-bone sliding grooves 204 are respectively opened on one side of the outer wall of several snake-bone main frames 203, several snake-bone sliders 205 are respectively fixedly connected to the other side of the outer wall of several snake-bone main frames 203, and the outer wall of the snake-bone slider 205 is slidably connected to the inner wall of the snake-bone sliding groove 204, so that the several snake-bone main frames 203 can be adjusted for extension and retraction while being hinged to each other; several annular parts 206 are respectively located in the middle of the outer wall of several snake-bone main frames 203, several rubber liners 207 and armored woven mesh 208 are respectively fixedly connected between each pair of several annular parts 206, and the armored woven mesh 208 covers the outer wall of the rubber liners 207.

[0027] The snake bone end 202 moves synchronously with the rubber liner 207, causing the snake bone main frame 203 to move. The moving snake bone main frame 203 causes the snake bone slider 205 to slide in the snake bone groove 204, causing the snake bone main frame 203 to shrink as a whole. At the same time, the rubber liner 207 is squeezed by the annular part 206, causing the rubber liner 207 to deform under pressure.

[0028] like Figures 2-7As shown, in one embodiment, the inner support drive mechanism 3 includes a side bracket 301, a hollow hydraulic cylinder 302, and a traction steel rope 303; The side support 301 is installed on the other side of the shelf 103, the hollow hydraulic cylinder 302 is installed between the side support 301 and the shelf 103, one end of the traction steel rope 303 is detachably installed on one end of the piston rod of the hollow hydraulic cylinder 302, and the other end of the traction steel rope 303 passes through the hollow hydraulic cylinder 302, the shelf 103, the snake bone end seat 201 and the snake bone main frame 203 and is fixedly connected to one end of the snake bone end 202, which is used to pull the snake bone end 202 to drive the snake bone main frame 203 to retract as a whole.

[0029] The side bracket 301 provides support for the hollow hydraulic cylinder 302. The piston rod of the hollow hydraulic cylinder 302 drives the traction steel rope 303 to move, and the moving traction steel rope 303 drives the snake bone end 202 to move.

[0030] like Figures 8-12 As shown, in one embodiment, the pipe bending mechanism 6 includes a pipe bending frame 602, a third reduction motor 603, a lifting frame 604, an inner slide 605, a rodless cylinder 606, a first hydraulic cylinder 607, a plurality of pipe bending support wheels 608 and a pipe bending drive wheel 609. The pipe bending frame 602 is rotatably connected to the bottom of the inner wall of the pipe bending machine frame 102. The third reduction motor 603 is installed at the bottom of the inner wall of the pipe bending machine frame 102 to drive the entire pipe bending frame 602 to rotate around the output shaft of the third reduction motor 603. The rodless cylinder 606 is installed on the top side of one side of the pipe bending machine frame 102. The lifting frame 604 is installed at the output end of the rodless cylinder 606. Several pipe bending support wheels 608 are hinged to one side of the inner wall of the lifting frame 604 and connected by torsion springs. The inner slide 605 is slidably connected to the top of the inner wall of the pipe bending frame 602. The first hydraulic cylinder 607 is installed on one side of the pipe bending frame 602. One end of the piston rod of the first hydraulic cylinder 607 is fixedly connected to one side of the inner slide 605, which is used to drive the inner slide 605 to slide in the pipe bending frame 102. The pipe bending drive wheel 609 is fixedly connected to one side of the inner wall of the inner slide 605, and the pipe bending drive wheel 609 is adapted to the pipe bending support wheel 608.

[0031] The third reduction motor 603 drives the bending frame 602 to rotate as a whole. The rotating bending frame 602 drives the bending drive wheel 609 to roll the outer wall of the pipe component 92. It works in conjunction with the bending support wheel 608 to bend the pipe component 92. The torsion spring between the bending support wheel 608 and the lifting frame 604 is used to reset the bending support wheel 608. The rodless cylinder 606 drives the lifting frame 604 to move as a whole. The moving lifting frame 604 drives the bending support wheel 608 to move up and down, so as to switch the bending support wheel 608 with different bending inner diameters.

[0032] like Figure 7 As shown, in one embodiment, a manual adjustment mechanism 4 is installed in the middle of one side of the main frame 101. The manual adjustment mechanism 4 includes a first housing 401, a first worm gear 402, a first worm 403, a handle 404, a central screw 405, and a first threaded sleeve 406. The first housing 401 is fixedly connected to one side of the pipe bending machine frame 102. The first worm gear 402 is rotatably connected to the inner wall of the first housing 401. The first worm 403 is rotatably connected to the top of the inner wall of the first housing 401. The outer wall of the first worm gear 402 is meshed with the outer wall of the first worm 403. One end of the handle 404 passes through the inner wall of the first housing 401 and is fixedly connected to one end of the first worm 403. One end of the central screw 405 is fixedly connected to one end of the first worm gear 402. The other end of the central screw 405 is rotatably connected to one side of the inner wall of the pipe bending machine frame 102. The outer wall of the first threaded sleeve 406 is fixedly connected to the inner wall of a shelf 103. The inner wall of the first threaded sleeve 406 is threadedly connected to the outer wall of the central screw 405.

[0033] By rotating the handle 404, the first worm gear 403 is driven to rotate. The rotating first worm gear 403 drives the first worm wheel 402 to rotate using its teeth. The rotating first worm wheel 402 drives the central screw 405 to rotate. The rotating central screw 405 drives a shelf 103 to move as a whole, which in turn drives the inner support mechanism 2 and the inner support drive mechanism 3, so as to adjust the specific position of the inner support mechanism 2 according to actual needs.

[0034] like Figures 13-15 As shown, in one embodiment, a primary clamping mechanism 5 is installed on the outside of another shelf 103. The primary clamping mechanism 5 includes a second housing 501, a first reduction motor 502 installed on the top of one side of the second housing 501, a second worm gear 503 fixedly connected to the output end of the first reduction motor 502, a second worm wheel 504 rotatably connected inside the second housing 501, a planar threaded portion 505 provided on one side of the second worm wheel 504, three trapezoidal clamping blocks 506 slidably connected to the inner wall of the second housing 501, and a belt drive mechanism 507 installed on one side of the second housing 501. Among them, the end of the second worm 503 away from the first geared motor 502 is rotatably connected to the inner side wall of the second housing 501, the outer side wall of the second worm 503 is meshed with the outer side wall of the second worm wheel 504, and one side of each of the three trapezoidal clamps 506 is threadedly connected to the planar threaded part 505. The belt drive mechanism 507 includes a second reduction motor 571, a belt drive component 572, and a second threaded sleeve 573. The second geared motor 571 is installed on one side of the inner wall of another shelf 103. The second threaded sleeve 573 is rotatably connected to the inner wall of another shelf 103. The inner wall of the second threaded sleeve 573 is threadedly connected to the outer wall of the central screw 405. The belt drive 572 is installed between the output shaft of the second geared motor 571 and one end of the second threaded sleeve 573. It is used to cooperate with the power of the output shaft of the second geared motor 571 to drive the second threaded sleeve 573 to rotate, thereby driving the shelf 103 to reciprocate along the central screw 405 axial direction. The outer side of the belt drive 572 is covered with a dust cover 91, which is installed on one side of the other shelf 103.

[0035] The output shaft of the first reduction motor 502 drives the second worm 503 to rotate. The rotating second worm 503 drives the second worm wheel 504 to rotate using its teeth. The rotating second worm wheel 504, in conjunction with the planar threaded part 505, drives the trapezoidal clamping block 506 to slide synchronously within the second housing 501, thereby concentrically clamping and fixing the pipe component 92.

[0036] like Figures 8-12 As shown, in one embodiment, a secondary pipe clamping mechanism 7 is slidably connected to one side of the upper surface of the pipe bending machine frame 102. The secondary pipe clamping mechanism 7 includes a support slide 701 that slides on one side of the pipe bending machine frame 102, two second hydraulic cylinders 702 symmetrically installed inside the support slide 701, two square clamping blocks 703 symmetrically sliding on the top of the inner wall of the support slide 701, a rack 704 fixedly connected to the bottom of one side of the support slide 701, a gear 705 fixedly connected between the output shaft of the third reduction motor 603 and the pipe bending frame 602, two guide rails 706 symmetrically fixedly connected to the surface of the pipe bending machine frame 102, and a plurality of guide wheels 707 that roll in the guide rails 706. The piston rods of the two second hydraulic cylinders 702 are respectively fixedly connected to one side of the two square clamping blocks 703, which are used to drive the square clamping blocks 703 to slide back and forth in the support slide 701. One side of the rack 704 is meshed with the outer wall of the gear 705, which is used to drive the support slide 701 to move back and forth along the direction of the rack 704 by the power of the output shaft of the third reduction motor 603. Several guide wheels 707 are installed on the bottom of the inner side wall of the support slide 701, which are used to roll in the guide rail 706 to guide the support slide 701.

[0037] The gear 705, which rotates synchronously with the output shaft of the third reduction motor 603, drives the rack 704 to move through its teeth. The moving rack 704 drives the support slide 701 to move as a whole, so that the secondary pipe clamping mechanism 7 can feed the pipe 92 during the bending process. The moving support slide 701 drives the guide wheel 707 to roll in the guide rail 706 to guide the moving support slide 701.

[0038] When the present invention is in operation: firstly, the position of the inner support mechanism 2 is determined according to the inner diameter of the pipe, so as to ensure that the inner support mechanism 2 can still provide sufficient support for the bending area of ​​the pipe after shrinkage.

[0039] When the position of the inner support mechanism 2 needs to be adjusted, the first worm gear 403 is rotated by turning the handle 404. The rotating first worm gear 403 drives the first worm wheel 402 to rotate using its teeth. The rotating first worm wheel 402 drives the central screw 405 to rotate. The rotating central screw 405 drives a shelf 103 to move as a whole, which is engaged with the first threaded sleeve 406 using its threads. This allows the inner support mechanism 2 and the inner support drive mechanism 3 to move as a whole, so that the specific position of the inner support mechanism 2 can be adjusted according to actual needs. The self-locking characteristic of the worm gear can be used to fix one end of the central screw 405 to prevent the central screw 405 from rotating synchronously with the second threaded sleeve 573 when it rotates.

[0040] When it is necessary to bend the pipe, one end of the pipe component 92 is passed through the bending mechanism 6, the secondary clamping mechanism 7, and the primary clamping mechanism 5 in sequence, and then fitted onto the inner support mechanism 2. After the inner support mechanism 2 is placed, the output shaft of the first reduction motor 502 drives the second worm gear 503 to rotate. The rotating second worm gear 503 drives the second worm wheel 504 to rotate using its teeth. The rotating second worm wheel 504, in conjunction with the planar threaded part 505, drives the trapezoidal clamping block 506 to slide synchronously within the second housing 501, so that the pipe component 92 can be concentrically clamped and fixed using the synchronously moving trapezoidal clamping block 506. Then, the output shaft of the second reduction motor 571, in conjunction with the belt drive 572, drives the second threaded sleeve 573 to rotate. The rotating second threaded sleeve 573, in conjunction with the threaded central screw 405, drives a shelf 103 to move the entire primary clamping mechanism 5 and the clamped and fixed pipe component 92, so that the specific bending position of the pipe component 92 can be adjusted according to actual needs.

[0041] After the position of the pipe fitting 92 is adjusted, the piston rod of the hollow hydraulic cylinder 302 drives the traction steel cable 303 to move. The moving traction steel cable 303 drives the snake bone end 202 to move. The moving snake bone end 202, in conjunction with the rubber liner 207, drives the snake bone main frame 203 to move synchronously. The moving snake bone main frame 203 drives the snake bone slider 205 to slide within the snake bone groove 204, causing the snake bone main frame 203 to retract as a whole. At the same time, the annular part 206 is used to... The rubber liner 207 is compressed, causing the armored braided mesh 208 to deform under pressure, thereby increasing the overall outer diameter of the inner support mechanism 2. When the deformed armored braided mesh 208 fits against the inner wall of the pipe component 92, the armored braided mesh 208, in conjunction with the rubber liner 207, limits the movement between the annular portion 206 and the snake-bone main frame 203, and the hollow hydraulic cylinder 302 stops working, thus completing the support operation for the inner wall of the pipe component 92.

[0042] After the outer wall of the inner support mechanism 2 is adjusted, the square clamping block 703 is driven to slide in the support slide 701 by the second hydraulic cylinder 702, so as to use the square clamping block 703 to perform secondary clamping on the outer side of the pipe component 92 near the bending area. After the secondary clamping is completed, the first deceleration motor 502 drives the primary clamping mechanism 5 to release the clamping on the pipe component 92. Then, the piston rod of the first hydraulic cylinder 607 pushes the inner slide 605 to slide within the bending frame 602. The moving inner slide 605 drives the bending drive wheel 609 to fit against the outer wall of the pipe component 92. Then, the output shaft of the third reduction motor 603, in conjunction with the gear 705, drives the bending frame 602 to rotate as a whole. The rotating bending frame 602 drives the bending drive wheel 609 to roll against the outer wall of the pipe component 92, and in conjunction with the bending support wheel 608, performs a bending operation on the pipe component 92. The torsion spring between the bending support wheel 608 and the lifting frame 604 is used to adjust the bending after the pipe component 92 is unloaded. The pipe support wheel 608 is reset, and during the bending process, the first hydraulic cylinder 607 continuously pushes the inner slide 605 and the pipe bending drive wheel 609 to compensate for bending paths at different angles. At the same time, the gear 705, which rotates synchronously with the output shaft of the third reduction motor 603, drives the rack 704 to move through its teeth. The moving rack 704 drives the support slide 701 to move as a whole, so that the pipe part 92 can be fed through the secondary pipe clamping mechanism 7 during the bending process. The moving support slide 701 drives the guide wheel 707 to roll in the guide rail 706 to guide the moving support slide 701.

[0043] When it is necessary to change the bending angle of the pipe fitting 92, before the pipe fitting 92 is placed, the rodless cylinder 606 is activated to drive the lifting frame 604 to move as a whole. The moving lifting frame 604 drives the bending support wheel 608 to move up and down, so as to switch the bending support wheel 608 with different bending inner diameters.

[0044] Furthermore, after a bending operation is completed, the first hydraulic cylinder 607 drives the inner slide 605 to reset the bending drive wheel 609, separating the bending drive wheel 609 from the pipe wall. Then, the primary clamping mechanism 5 clamps the pipe component 92 again, and the secondary clamping mechanism 7 releases the clamp on the pipe component 92 so that the third reduction motor 603 can drive the bending mechanism 6 and the secondary clamping mechanism 7 to reset as a whole. Then, the inner support drive mechanism 3 drives the inner support mechanism 2 to reset, separating the outer wall of the inner support mechanism 2 from the inner wall of the pipe component 92. Then, the primary clamping mechanism 5 drives the pipe component 92 to move again, adjusting the secondary bending position on the pipe component 92 to between the bending drive wheel 609 and the bending support wheel 608. Thus, the operation can be repeated to continuously bend the pipe component 92.

[0045] To save on the overall cost of the inner support mechanism 2, the length of one end of the snake bone end seat 201 can be extended to reduce the number of snake bone main frame 203, rubber liner 207 and armored woven mesh 208 used between the snake bone end seat 201 and the snake bone end 202. However, the minimum number of snake bone main frame 203 used should not be less than four sections.

[0046] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A pipe bending device for building construction, comprising a bending frame assembly (1) and an internal support mechanism (2), characterized in that, The bending frame assembly (1) includes a main frame (101), a pipe bending frame (102), and two shelves (103). The pipe bending machine frame (102) is installed on one side of the main frame (101), the two shelves (103) are both installed and connected to the inner wall of the main frame (101), the inner support mechanism (2) is installed on one side of one shelf (103), the inner support drive mechanism (3) is installed on the other side of the shelf (103), and the pipe bending mechanism (6) is installed on the inner wall of the pipe bending machine frame (102). The inner support mechanism (2) adopts a telescopic snake bone structure, which can bend and deform in the direction of pipe bending; The inner support drive mechanism (3) is used to drive the inner support mechanism (2) to retract, thereby changing the outer diameter of the inner support mechanism (2) so that it fits fully against the inner wall of the pipe. The pipe bending mechanism (6) bends the pipe by roller pressing and can adjust the inner diameter of the pipe by lifting.

2. The pipe bending equipment for building construction according to claim 1, characterized in that: The internal support mechanism (2) includes a snake bone end seat (201), a snake bone end (202), a number of snake bone main frames (203), a number of snake bone grooves (204), a number of snake bone sliders (205), a number of annular parts (206), a number of rubber liners (207) and a number of armored woven meshes (208). The snake bone end seat (201) is installed on one side of one of the shelves (103), the snake bone end (202) is located on one side of the snake bone end seat (201), a plurality of snake bone main frames (203) are hinged between the snake bone end seat (201) and the snake bone end (202), a plurality of snake bone grooves (204) are respectively opened on one side of the outer wall of a plurality of snake bone main frames (203), a plurality of snake bone sliders (205) are respectively fixedly connected to the other side of the outer wall of a plurality of snake bone main frames (203), and the outer wall of the snake bone slider (205) is slidably connected to the inner wall of the snake bone groove (204), so that the plurality of snake bone main frames (203) can be extended and retracted while being hinged to each other in pairs.

3. The pipe bending equipment for building construction according to claim 2, characterized in that: A plurality of the annular portions (206) are respectively disposed in the middle of the outer side wall of a plurality of snake bone main frames (203), and a plurality of rubber liners (207) and armored woven mesh (208) are respectively fixedly connected between each pair of the plurality of annular portions (206), and the armored woven mesh (208) covers the outer side wall of the rubber liners (207).

4. The pipe bending equipment for building construction according to claim 2, characterized in that: The internal support drive mechanism (3) includes a side bracket (301), a hollow hydraulic cylinder (302), and a traction steel rope (303). The side support (301) is installed on the other side of the shelf (103), the hollow hydraulic cylinder (302) is installed between the side support (301) and the shelf (103), one end of the traction steel rope (303) is detachably installed on one end of the piston rod of the hollow hydraulic cylinder (302), and the other end of the traction steel rope (303) passes through the hollow hydraulic cylinder (302), the shelf (103), the snake bone end seat (201) and the snake bone main frame (203) and is fixedly connected to one end of the snake bone end (202) for traction of the snake bone end (202) to drive the snake bone main frame (203) to retract as a whole.

5. The pipe bending equipment for building construction according to claim 1, characterized in that: The pipe bending mechanism (6) includes a pipe bending frame (602), a third reduction motor (603), a lifting frame (604), an inner slide (605), a rodless cylinder (606), a first hydraulic cylinder (607), several pipe bending support wheels (608), and a pipe bending drive wheel (609). The pipe bending frame (602) is rotatably connected to the bottom of the inner wall of the pipe bending machine frame (102). The third reduction motor (603) is installed at the bottom of the inner wall of the pipe bending machine frame (102) to drive the pipe bending frame (602) to rotate around the output shaft of the third reduction motor (603). The rodless cylinder (606) is installed on the top of one side of the pipe bending machine frame (102). The lifting frame (604) is installed at the output end of the rodless cylinder (606). Several pipe bending support wheels (608) are hinged to one side of the inner wall of the lifting frame (604) and connected by torsion springs to reset the pipe bending support wheels (608) after torsion.

6. The pipe bending equipment for building construction according to claim 5, characterized in that: The inner slide (605) is slidably connected to the top of the inner wall of the pipe bending frame (602). The first hydraulic cylinder (607) is installed on one side of the pipe bending frame (602). One end of the piston rod of the first hydraulic cylinder (607) is fixedly connected to one side of the inner slide (605) to drive the inner slide (605) to slide inside the pipe bending machine frame (102). The pipe bending drive wheel (609) is fixedly connected to one side of the inner wall of the inner slide (605), and the pipe bending drive wheel (609) is adapted to the pipe bending support wheel (608).

7. The pipe bending equipment for building construction according to claim 2, characterized in that: A manual adjustment mechanism (4) is installed in the middle of one side of the main frame (101). The manual adjustment mechanism (4) includes a first housing (401), a first worm gear (402), a first worm (403), a handle (404), a central screw (405), and a first threaded sleeve (406). The first housing (401) is fixedly connected to one side of the pipe bending machine frame (102), the first worm gear (402) is rotatably connected to the inner wall of the first housing (401), the first worm (403) is rotatably connected to the top of the inner wall of the first housing (401), the outer wall of the first worm gear (402) is meshed with the outer wall of the first worm (403), and one end of the handle (404) penetrates the inner wall of the first housing (401) and is fixedly connected. One end of the central screw (405) is fixedly connected to one end of the first worm gear (402), and the other end of the central screw (405) is rotatably connected to one side of the inner wall of the pipe bending machine frame (102). The outer wall of the first threaded sleeve (406) is fixedly connected to the inner wall of one of the shelves (103), and the inner wall of the first threaded sleeve (406) is threadedly connected to the outer wall of the central screw (405).

8. The pipe bending equipment for building construction according to claim 2, characterized in that: Another shelf (103) is equipped with a primary clamping mechanism (5) on its outer side. The primary clamping mechanism (5) includes a second housing (501), a first geared motor (502) installed on the top side of the second housing (501), a second worm gear (503) fixedly connected to the output end of the first geared motor (502), a second worm wheel (504) rotatably connected inside the second housing (501), a flat threaded part (505) provided on the side of the second worm wheel (504), three trapezoidal clamping blocks (506) slidably connected to the inner wall of the second housing (501), and a belt drive mechanism (507) installed on the side of the second housing (501). Wherein, the end of the second worm (503) away from the first geared motor (502) is rotatably connected to one side of the inner wall of the second housing (501), the outer wall of the second worm (503) is meshed with the outer wall of the second worm wheel (504), and one side of each of the three trapezoidal clamps (506) is threaded to the planar threaded part (505). The belt drive mechanism (507) includes a second geared motor (571), a belt drive component (572), and a second threaded sleeve (573). The second geared motor (571) is installed on one side of the inner wall of another shelf (103), the second threaded sleeve (573) is rotatably connected to the inner wall of another shelf (103), the inner wall of the second threaded sleeve (573) is threadedly connected to the outer wall of the central screw (405), and the belt drive (572) is installed between the output shaft of the second geared motor (571) and one end of the second threaded sleeve (573) to cooperate with the power of the output shaft of the second geared motor (571) to drive the second threaded sleeve (573) to rotate, thereby driving the shelf (103) to reciprocate along the central screw (405).

9. The pipe bending equipment for building construction according to claim 5, characterized in that: A secondary pipe clamping mechanism (7) is slidably connected to one side of the upper surface of the pipe bending machine frame (102). The secondary pipe clamping mechanism (7) includes a support slide (701) that slides on one side of the pipe bending machine frame (102), two second hydraulic cylinders (702) symmetrically installed inside the support slide (701), two square clamping blocks (703) that slide symmetrically on the top of the inner wall of the support slide (701), a rack (704) fixedly connected to the bottom of one side of the support slide (701), a gear (705) fixedly connected between the output shaft of the third reduction motor (603) and the pipe bending frame (602), two guide rails (706) symmetrically fixedly connected to the surface of the pipe bending machine frame (102), and several guide wheels (707) that roll in the guide rails (706). The piston rods of the two second hydraulic cylinders (702) are respectively fixedly connected to one side of the two square clamps (703) to drive the square clamps (703) to slide back and forth in the support slide (701). One side of the rack (704) is meshed with the outer wall of the gear (705) to drive the support slide (701) to move back and forth along the direction of the rack (704) by the power of the output shaft of the third reduction motor (603). Several guide wheels (707) are installed on the bottom of the inner wall of the support slide (701) to roll in the guide rail (706) to guide the support slide (701).

10. The pipe bending equipment for building construction according to claim 8, characterized in that: The outer side of the belt drive (572) is provided with a dust cover (91), which is installed on one side of another shelf (103).

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