A medium frequency hot bending device and a curved steel processing method based on the device

Abstract

The present invention relates to the technical field of steel pipe bending, specifically, a medium frequency hot bending device and a curved steel processing method based on the device are disclosed. A medium frequency hot bending device includes a device body, the device body includes a first support seat, a mounting seat is provided at one end of the first support seat, and a first through hole is provided at the mounting seat; a push plate is provided at the other end of the first support seat; a first support member is provided between the mounting seat and the push plate; a second support member is provided at one end of the mounting seat; the second support member includes a base, a support frame is provided at the upper end of the base and a universal wheel is provided at the lower end; a trigger mechanism is provided at the mounting seat. A method for processing curved steel using a medium frequency hot bending device, first, the straight steel pipe is hung on the first support member, the push plate pushes the straight steel pipe, and then the medium frequency induction heating coil is started, the guide block bends the straight steel pipe, and the second arc plate is attached to the side wall of the bent portion of the straight steel pipe to support the bent portion of the straight steel pipe and moves with the straight steel pipe. It is convenient for the staff to support the bent portion of the steel pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe bending, in particular to a medium frequency hot bending device and a curved steel processing method based on the device. Background Art

[0002] At present, there are many kinds of buildings in the country. In order to meet the construction of buildings of various shapes, steel materials such as steel pipes, steel plates, and steel bars used in buildings need to be bent into different shapes. The two most common steel materials in construction are flat steel and curved steel. The curved steel commonly used in construction is curved steel pipe, and the process of making curved steel pipe is to bend straight steel pipe into arc-shaped steel pipe.

[0003] A medium frequency pipe bender is usually used to bend straight steel pipes. The straight steel pipe is placed on the medium frequency pipe bender by a crane, and then the straight steel pipe is pushed by a hydraulic cylinder to pass through the medium frequency induction heating ring. The straight steel pipe is locally heated by the medium frequency induction heating ring, and then a guide device is used to bend and guide the straight steel pipe to obtain an arc-shaped steel pipe.

[0004] As the guide device bends and guides the straight steel pipe, the distance between the guide device and the medium frequency induction heating coil becomes farther and farther. When the straight steel pipe is bent for a long time, the bent portion of the straight steel pipe tends to fall downward between the guide device and the medium frequency induction heating coil. At this time, support is required by a support member. The existing method is to manually support the support member on the bent portion of the straight steel pipe during the bending process. Since the straight steel pipe is in a moving state, it brings inconvenience to the staff in terms of support. Summary of the Invention

[0005] The present invention provides a medium frequency hot bending device and a curved steel processing method based on the device, which can overcome certain defects of the prior art.

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0007] A medium-frequency hot bending device includes a device body, which includes a first support seat in a rectangular shape, a mounting seat is provided at one end of the first support seat, and a first through hole for a straight steel pipe to pass through the mounting seat is provided at the mounting seat; a push plate is provided at the other end of the first support seat for pushing the straight steel pipe to pass through the first through hole; a first support member for supporting the straight steel pipe and movable along the length direction of the first support seat is provided between the mounting seat and the push plate; a second support member is provided at the end of the mounting seat away from the first support member; the second support member includes a base, a support frame for supporting the bending part of the straight steel pipe is provided at the upper end of the base, and a universal wheel is provided at the lower end of the base; a trigger mechanism is provided at the mounting seat, and the trigger mechanism is used to fix the base to the mounting seat and release the fixation of the base when triggered by the first support member.

[0008] According to the present invention, compared with the prior art, during the pipe bending process, there is no need for workers to place a support frame. The medium frequency hot bending device will automatically place the support frame, thereby making it convenient for workers to support the bent portion of the steel pipe.

[0009] Preferably, mounting grooves are provided at the side walls at both ends of the mounting seat, and a first dividing plate is provided in the mounting groove along the length direction of the mounting groove, the first dividing plate dividing the mounting groove into a first sub-dividing groove and a second sub-dividing groove; a second dividing plate is provided in the second sub-dividing groove to divide the second sub-dividing groove into a third sub-dividing groove and a fourth sub-dividing groove; a second through hole is provided on the first dividing plate along its length direction and communicated with the fourth sub-dividing groove, and a third through hole is also provided on the first dividing plate to communicate with the third sub-dividing groove; the side wall of the mounting groove corresponding to the third through hole is recessed inward to form a first groove, and a connecting hole and a fourth through hole are respectively provided on the side wall of the third sub-dividing groove and the fourth sub-dividing groove away from the second dividing plate;

[0010] The trigger mechanism includes a fixing member arranged in the mounting groove for fixing the base, and a releasing member for releasing the fixing of the base; the fixing member includes a limit block extending into the first groove, one end of the limit block passes through the first sub-dividing groove and the third through hole and extends into the third sub-dividing groove; one end surface of the limit block located in the first sub-dividing groove and the third through hole is recessed inward to form a second groove; a first inclined surface is provided at a side wall of the second groove close to the first groove; a first sliding block and a second sliding block are respectively provided in the first sub-dividing groove and the fourth sub-dividing groove; a connecting plate is provided between the first sliding block and the second sliding block, which passes through the second through hole and connects the first sliding block and the second sliding block; one end of the first sliding block rests on the first inclined surface;

[0011] A first spring is provided in the first groove to push the limit block downward to squeeze the first sliding block, an extrusion block extending out of the fourth through hole is provided at the side wall of the second sliding block, and a second spring is provided in the fourth sub-dividing groove to push the second sliding block so that the extrusion block extends out of the fourth through hole; a blocking plate is provided at the opening of the installation groove to block the installation groove; a connecting block is provided at the side wall of the base to extend into the third sub-dividing groove, and a fifth through hole is provided at the connecting block for the limit block to pass through.

[0012] The present invention facilitates the release of the base, allowing the base to be detached and moved.

[0013] Preferably, the end of the limiting block extending into the third sub-dividing groove is provided with a second inclined surface; the end of the first sliding block contacting the first inclined surface is provided with a third inclined surface matching the first inclined surface.

[0014] The present invention can better facilitate the workers to connect the base to the mounting seat and facilitate the first sliding block to push the limiting block to move upward.

[0015] Preferably, a first blind hole is provided on the side wall of the push plate corresponding to the first through hole; a first slide groove is provided on the upper end surface of the first support seat along its length direction, and a first threaded rod is provided in the first slide groove along the length direction of the first slide groove; a first motor that drives the first threaded rod to rotate is provided at the end of the first support seat away from the mounting seat; a third sliding block extending into the first slide groove is provided on the lower end surface of the push plate, and a first threaded hole that cooperates with the first threaded rod is provided on the side wall of the third sliding block.

[0016] The present invention can better facilitate driving the push plate to push the straight steel pipe to move.

[0017] Preferably, the first support member includes a support plate arranged perpendicular to the first support seat and located above the first support seat (140), the upper end surface of the support plate is recessed inward to form a third groove in the shape of a semicircle; a plurality of rollers are provided at the lower end surface of the support plate, and a second slide groove for the rollers to extend into is provided at the upper end surface of the first support seat and is arranged along the length direction of the first support seat.

[0018] According to the present invention, the friction between the support plate and the side wall of the second chute is reduced by the roller, which facilitates the straight steel pipe to drive the support plate to move, thereby pushing the extrusion block to release the fixation of the second support member;

[0019] Before the straight steel pipe is hoisted, the staff can adjust the position of the support plate to determine the position of the curved portion of the straight steel pipe supported by the second support member, so that the staff can select a suitable support position and better improve the supporting effect of the second support member.

[0020] Preferably, a sixth through hole passing through the support plate is provided at the center of the support plate, a rectangular through hole communicating with the sixth through hole is provided at the bottom end surface of the third groove, a second blind hole corresponding to the rectangular through hole is provided at the side wall of the lower end of the sixth through hole, a second threaded rod passing through the sixth through hole and extending into the rectangular through hole is provided in the second blind hole, and a telescopic rod matching with the rectangular through hole is provided at one end of the second threaded rod extending into the rectangular through hole; the upper end surface of the telescopic rod is recessed downward to form a fourth groove, a first arc plate in a semicircular shape is provided in the third groove, a first telescopic column extending into the fourth groove is provided at the side wall of the first arc plate, and a third spring for squeezing the first telescopic column is provided in the fourth groove; a sleeve is provided in the sixth through hole and is sleeved on the second threaded rod, and an inner thread matching with the second threaded rod is provided on the inner side wall of the sleeve.

[0021] The present invention increases the friction between the first arc-shaped plate and the straight steel pipe, making it easier for the straight steel pipe to drive the support plate to move.

[0022] The third spring pushes the first telescopic column to move upward, so that the first curved plate abuts against the side wall of the straight steel pipe, thereby further strengthening the friction between the first curved plate and the straight steel pipe.

[0023] The cam is secured to a position 56° to the first support frame, and the cam is secured to a position 56° to the second support frame, wherein the cam is secured to a position 56° to the first support frame, and the cam is secured to a position 56° to the second support frame.

[0024] The present invention facilitates bending of straight steel pipes;

[0025] The position of the guide block is determined by the extension and contraction of the cylinder, and the position of the moving table is determined by driving the moving table with the third threaded rod, thereby facilitating the bending of straight steel pipes with different curvatures.

[0026] Preferably, the support frame includes a first support column arranged perpendicular to the base, a second support column arranged obliquely and supporting the first support column is provided at the upper end of the base; the top end of the first support column is recessed inward to form a fifth groove; a second arc-shaped plate is provided at the upper end of the first support column, and a second telescopic column extending into the fifth groove is provided at the side wall of the bottom end of the second arc-shaped plate; the bottom end surface of the fifth groove is recessed inward and extends into the base to form a sixth groove, and a seventh groove is provided at one end surface of the base close to the mounting seat and communicates with the bottom end of the sixth groove, a sealing plate is provided at the opening of the seventh groove, and the sealing plate and the side wall of the seventh groove together constitute a seventh through hole;

[0027] The lower end of the second telescopic column is provided with a third telescopic column that passes through the sixth groove and extends into the seventh groove. The lower end of the third telescopic column is provided with a fifth sliding block that can slide in the seventh groove. The end of the fifth sliding block close to the third telescopic column is provided with a fourth inclined surface; the bottom end of the fifth groove is provided with a fourth spring that is sleeved on the third telescopic column and squeezes the second telescopic column; the fourth spring is used to keep the fourth inclined surface located at the seventh through hole; the end of the first support seat close to the base is provided with a wedge block that passes through the seventh through hole and squeezes the fourth inclined surface, and the contact end of the wedge block with the fourth inclined surface is provided with an arc surface.

[0028] The present invention facilitates the movement of the bent portion of the straight steel pipe to drive the base to move;

[0029] Prevent the second curved plate from being pushed out when the straight steel pipe extends out of the first through hole.

[0030] Preferably, a vertical plate is provided at one end of the first support seat away from the mounting seat, a guide column is provided between the vertical plate and the mounting seat, and a first guide hole and a second guide hole for the guide column to pass through are respectively provided on the push plate and the support plate.

[0031] The present invention can better improve the stability of the push plate and the support plate during movement.

[0032] The present invention provides a method for processing curved steel using a medium frequency hot bending device, the steps of which are as follows:

[0033] First, the straight steel pipe is hoisted onto the first support member by a crane, and one end of the straight steel pipe is inserted into the first through hole, and the other end is inserted into the first blind hole; then the first motor is started to make the push plate push one end of the straight steel pipe through the first through hole and the medium frequency induction heating ring and extend into the limit hole; then the medium frequency induction heating ring and the third motor are started, and the third motor drives the guide block to rotate, and the push plate continues to push the straight steel pipe, so that the guide block bends the straight steel pipe. In the process of the straight steel pipe being pushed by the push plate, the straight steel pipe drives the support plate to move. When the support plate moves to the position of the mounting seat, the support plate pushes the extrusion block, so that the first sliding block squeezes the limit block upward, thereby disengaging the limit block from the fifth through hole. At this time, the fourth spring pushes the second telescopic column upward, so that the second arc plate fits on the side wall of the bent part of the straight steel pipe to support the bent part of the straight steel pipe, and drives the second support member to move together with the movement of the straight steel pipe.

[0034] According to the present invention, during the pipe bending process, workers do not need to place the support frame. The support frame is automatically placed in the method, thereby making it convenient for workers to support the bent portion of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the device body in Example 1.

[0036] Figure 2 This is a schematic diagram of the vertical plate in Example 1.

[0037] Figure 3 Example 1 Figure 2 Schematic diagram of the wedge at A.

[0038] Figure 4 Schematic diagram of the push plate in Example 1.

[0039] Figure 5 This is a schematic diagram of the first sliding groove, the second sliding groove and the first threaded rod in Example 1.

[0040] Figure 6 Schematic diagram of the guiding mechanism in Example 1.

[0041] Figure 7 Schematic diagram of the medium frequency induction heating coil in Example 1.

[0042] Figure 8 Schematic diagram of the internal structure of the installation slot in Example 1.

[0043] Figure 9 This is a cross-sectional view of the trigger mechanism in Example 1.

[0044] Figure 10 Schematic diagram of the release member in Example 1.

[0045] Figure 11 Schematic diagram of the fixing member in Example 1.

[0046] Figure 12 This is a schematic diagram of the second support member in Example 1.

[0047] Figure 13 This is a cross-sectional view of the second support member in Example 1.

[0048] Figure 14 Example 1 Figure 13 Cross-sectional view of the second telescopic column, fourth spring, and fifth groove at B in the middle.

[0049] Figure 15 Example 1 Figure 13 Cross-sectional view of the fifth sliding block at C in the middle.

[0050] Figure 16 This is a schematic diagram of the fifth sliding block in Example 1.

[0051] Figure 17 This is a schematic diagram of the first support member in Example 1.

[0052] Figure 18 This is a cross-sectional view of the first support member in Example 1.

[0053] Figure 19 Schematic diagram of the telescopic rod in Example 1.

[0054] Figure 20 Schematic diagram of the rectangular through hole and the second blind hole in Example 1. DETAILED DESCRIPTION

[0055] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments. It should be understood that the embodiments are merely for explaining the present invention and are not intended to limit the present invention. Example 1

[0056] like Figure 1-20As shown, this embodiment provides a medium frequency hot bending device, which includes a device body 100, and the device body 100 includes a first support seat 140 with a rectangular shape, a mounting seat 101 is provided at one end of the first support seat 140, and a first through hole 210 for a straight steel pipe to pass through the mounting seat 101 is provided at the mounting seat 101; a push plate 120 for pushing the straight steel pipe to pass through the first through hole 210 is provided at the other end of the first support seat 140; a push plate 120 for supporting the straight steel pipe is provided between the mounting seat 101 and the push plate 120, and can be moved along the first support seat 140 A first support member 110 that moves in the length direction; a second support member 190 is provided at the end of the mounting seat 101 away from the first support member 110; the second support member 190 includes a base 1202, the upper end of the base 1202 is provided with a support frame 730 for supporting the bent portion of the straight steel pipe, and the lower end of the base 1202 is provided with a universal wheel 1203; a trigger mechanism is provided at the mounting seat 101, and the trigger mechanism is used to fix the base 1202 to the mounting seat 101, and release the fixation of the base 1202 when triggered by the first support member 110.

[0057] Through this embodiment, the staff uses a crane to move the straight steel pipe to the first support member 110, and extends one end of the straight steel pipe into the first through hole 210, and then pushes the straight steel pipe through the push plate 120. The movement of the straight steel pipe drives the first support member 110 to move. When the first support member 110 moves to the mounting seat 101, the trigger mechanism is activated to release the fixation of the second support member 190, so that the support frame 730 is supported on the lower end of the straight steel pipe, and the second support member 190 moves along with the movement of the bent portion of the straight steel pipe to provide support for it; compared with the existing technology, during the pipe bending process, there is no need for staff to place the support frame, and the medium frequency hot bending device will automatically place the support frame, thereby facilitating the staff to support the bent portion of the steel pipe.

[0058] In this embodiment, mounting grooves 810 are provided at the side walls at both ends of the mounting seat 101, and a first dividing plate 870 is provided in the mounting groove 810 along the length direction of the mounting groove 810, and the first dividing plate 870 divides the mounting groove 810 into a first sub-dividing groove 820 and a second sub-dividing groove 830; a second dividing plate 860 is provided in the second sub-dividing groove 830 to divide the second sub-dividing groove 830 into a third sub-dividing groove 850 and a fourth sub-dividing groove 880; a second through hole 890 is provided on the first dividing plate 870 along the length direction thereof and communicated with the fourth sub-dividing groove 880, and a third through hole 821 is further provided on the first dividing plate 870 to communicate with the third sub-dividing groove 850; the side wall of the mounting groove 810 corresponding to the third through hole 821 is recessed inward to form a first groove 910, and a connecting hole 840 and a fourth through hole 801 are respectively provided on the side wall of the third sub-dividing groove 850 and the fourth sub-dividing groove 880 away from the second dividing plate 860;

[0059] The trigger mechanism includes a fixing member 930 provided in the mounting groove 810 for fixing the base 1202, and a releasing member 950 for releasing the base 1202 from being fixed; the fixing member 930 includes a limiting block extending into the first groove 910, one end of the limiting block passes through the first sub-dividing groove 820 and the third through hole 821 and extends into the third sub-dividing groove 850; one end of the limiting block located in the first sub-dividing groove 820 and the third through hole 821 is recessed inward to form a second groove 1102; the second A first inclined surface 1101 is provided on the sidewall of the groove 1102 near the first groove 910; a first sliding block 1001 and a second sliding block 1003 are respectively provided in the first sub-dividing groove 820 and the fourth sub-dividing groove 880; a connecting plate 1005 is provided between the first sliding block 1001 and the second sliding block 1003, passing through the second through hole 890 and connecting the first sliding block 1001 and the second sliding block 1003; one end of the first sliding block 1001 abuts against the first inclined surface 1101;

[0060] A first spring 920 is provided in the first groove 910 for pushing the limit block downward to squeeze the first sliding block 1001, a squeezing block 1004 extending out of the fourth through hole 801 is provided at the side wall of the second sliding block 1003, and a second spring 940 is provided in the fourth sub-dividing groove 880 for pushing the second sliding block 1003 to make the squeezing block 1004 extend out of the fourth through hole 801; a blocking plate 710 is provided at the opening of the installation groove 810 to block the installation groove 810; a connecting block 1204 extending into the third sub-dividing groove 850 is provided at the side wall of the base 1202, and a fifth through hole 1201 is provided at the connecting block 1204 for the limit block to pass through.

[0061] Through this embodiment, in the process of the straight steel pipe being pushed by the push plate 120, the straight steel pipe drives the first support member 110 to move. When the first support member 110 moves to the position of the mounting seat 101, the first support member 110 pushes the extrusion block 1004 to move the second sliding block 1003. The movement of the second sliding block 1003 drives the first sliding block 1001 to move, thereby causing the first sliding block 1001 to squeeze the first inclined surface 1101 on the limit block, causing the limit block to move upward, thereby causing the limit block to disengage from the fifth through hole 1201, thereby releasing the fixation of the base 1202. By driving the first support member 110 to move through the straight steel pipe, it is convenient to release the fixation of the base 1202, so that the base 1202 can be disengaged and moved.

[0062] In this embodiment, the end of the limit block extending into the third sub-dividing groove 850 is provided with a second inclined surface 1103; the end of the first sliding block 1001 contacting the first inclined surface 1101 is provided with a third inclined surface 1002 matching the first inclined surface 1101.

[0063] According to this embodiment, when the staff needs to fix the base 1202 on the mounting base 101, they can insert the connecting block 1204 into the third sub-dividing groove 850, so that the connecting block 1204 presses the second inclined surface 1103 on the limiting block, causing the limiting block to move upward, thereby making it easier for the staff to connect the base 1202 to the mounting base 101.

[0064] The third inclined surface 1002 on the first sliding block 1001 abuts against the first inclined surface 1101 , thereby facilitating the first sliding block 1001 to push the limiting block upward.

[0065] In this embodiment, a first blind hole 410 is provided at the side wall of the push plate 120 corresponding to the first through hole 210; a first slide groove 510 is provided at the upper end surface of the first support seat 140 along its length direction, and a first threaded rod 530 is provided in the first slide groove 510 along the length direction of the first slide groove 510; a first motor 130 is provided at the end of the first support seat 140 away from the mounting seat 101 to drive the first threaded rod 530 to rotate; a third sliding block 430 is provided at the lower end surface of the push plate 120 and extends into the first slide groove 510, and a first threaded hole 440 is provided on the side wall of the third sliding block 430 to cooperate with the first threaded rod 530.

[0066] Through this embodiment, one end of the straight steel pipe extends into the first blind hole 410, and the first motor 130 drives the first threaded rod 530 to rotate, thereby driving the third sliding block 430 to move. The movement of the third sliding block 430 drives the push plate 120 to move, thereby better facilitating the driving of the push plate 120 to push the straight steel pipe to move.

[0067] In this embodiment, the first support member 110 includes a support plate arranged perpendicular to the first support seat 140 and located above the first support seat (140), and the upper end surface of the support plate is recessed inward to form a third groove 1702 in the shape of a semicircle; a plurality of rollers 1704 are provided at the lower end surface of the support plate, and a second slide groove 520 is provided at the upper end surface of the first support seat 140 for the rollers 1704 to extend into and is arranged along the length direction of the first support seat 140.

[0068] Through this embodiment, the straight steel pipe is hoisted onto the support plate by the crane, and the third groove 1702 on the support plate is stuck on the outer wall of the straight steel pipe. During the movement of the straight steel pipe, due to the friction between the outer wall of the straight steel pipe and the side wall of the third groove 1702, the roller 1704 at the lower end of the support plate is driven to move along the second slide groove 520. The roller 1704 reduces the friction between the support plate and the side wall of the second slide groove 520, making it easier for the straight steel pipe to drive the support plate to move, thereby pushing the extrusion block 1004 to release the fixation of the second support member 190.

[0069] Before the straight steel pipe is hoisted, the staff can adjust the position of the support plate to determine the position of the curved portion of the straight steel pipe supported by the second support member 190, so that the staff can select a suitable support position and better improve the supporting effect of the second support member 190.

[0070] In this embodiment, a sixth through hole 1703 passing through the support plate is provided at the center of the support plate, a rectangular through hole 2001 communicating with the sixth through hole 1703 is provided at the bottom end surface of the third groove 1702, a second blind hole 2002 corresponding to the rectangular through hole 2001 is provided at the side wall of the lower end of the sixth through hole 1703, a second threaded rod 1804 is provided in the second blind hole 2002, which passes through the sixth through hole 1703 and extends into the rectangular through hole 2001, and one end of the second threaded rod 1804 extending into the rectangular through hole 2001 is provided with a telescopic rod that cooperates with the rectangular through hole 2001 1901; the upper end surface of the telescopic rod 1901 is recessed downward to form a fourth groove 1806, a first arc-shaped plate 1801 in a semicircular shape is provided in the third groove 1702, a first telescopic column 1802 extending into the fourth groove 1806 is provided at the side wall of the first arc-shaped plate 1801, and a third spring 1803 for squeezing the first telescopic column 1802 is provided in the fourth groove 1806; a sleeve 1805 is provided in the sixth through hole 1703 and is sleeved on the second threaded rod 1804, and an internal thread matching the second threaded rod 1804 is provided on the inner wall of the sleeve 1805.

[0071] According to this embodiment, the staff can rotate the sleeve 1805 to move the second threaded rod 1804 upward, thereby moving the telescopic rod 1901 upward, pushing the first curved plate 1801 against the side wall of the straight steel pipe, thereby increasing the friction between the first curved plate 1801 and the straight steel pipe, making it easier for the straight steel pipe to drive the support plate to move;

[0072] The third spring 1803 pushes the first telescopic column 1802 upward, causing the first curved plate 1801 to rest against the side wall of the straight steel pipe, thereby further strengthening the friction between the first curved plate 1801 and the straight steel pipe.

[0073] In this embodiment, a guide mechanism 180 for bending a straight steel pipe is provided at the side wall of the first support seat 140 close to the mounting seat 101. The guide mechanism 180 includes a second support seat 170 arranged perpendicular to the side wall of the first support seat 140. A third slide groove 550 is provided on the upper end surface of the second support seat 170 along the length direction of the second support seat 170. A third threaded rod 540 is provided in the third slide groove 550 along the length direction of the third slide groove 550; a second motor 160 is provided at the end of the second support seat 170 away from the mounting seat 101 to drive the third threaded rod 540 to rotate; a movable platform 670 is provided at the upper end of the second support seat 170. A fourth sliding block 650 extending into the third slide groove 550 is provided at the lower end surface of 670, and a second threaded hole 660 cooperating with the third threaded rod 540 is provided on the fourth sliding block 650; a rotating disk 680 is provided at the upper end surface of the movable platform 670, and a cylinder 610 is provided on the side wall of the rotating disk 680, and a guide block 630 is provided at the end of the cylinder 610 away from the rotating disk 680, and a limiting hole 620 is provided on the guide block 630 corresponding to the first through hole 210; a third motor 640 for driving the rotating disk 680 to rotate is also provided on the movable platform 670; a medium-frequency induction heating coil 720 is provided at the opening of one end of the first through hole 210 close to the guide block 630.

[0074] In this embodiment, the medium frequency induction heating coil 720 locally heats the straight steel pipe to soften it, and then, under the push of the push plate 120 and the guide block 630 driven by the third motor 640 to rotate the rotating disk 680 to drive the guide block 630 to move, the straight steel pipe is bent, thereby facilitating the bending of the straight steel pipe.

[0075] The position of the guide block 630 is determined by telescoping the cylinder 610 , and the position of the movable platform 670 is driven by the third threaded rod 540 , thereby facilitating the bending of straight steel pipes with different curvatures.

[0076] In this embodiment, the support frame 730 includes a first support column 1207 arranged perpendicular to the base 1202, and a second support column 1209 is provided at an upper end of the base 1202 and is inclined to support the first support column 1207; the top of the first support column 1207 is recessed inward to form a fifth groove 1403; a second arc-shaped plate 1208 is provided at the upper end of the first support column 1207, and a second telescopic column 1401 is provided at the side wall of the bottom end of the second arc-shaped plate 1208 to extend into the fifth groove 1403; the bottom end surface of the fifth groove 1403 is recessed inward and extends into the base 1202 to form a sixth groove 1501, and a seventh groove 1502 is provided at one end surface of the base 1202 close to the mounting seat 101, which is connected to the bottom end of the sixth groove 1501, and a sealing plate 1205 is provided at the opening of the seventh groove 1502, and the sealing plate 1205 and the side wall of the seventh groove 1502 together constitute a seventh through hole 1206;

[0077] A third telescopic column 1404 is provided at the lower end of the second telescopic column 1401, which passes through the sixth groove 1501 and extends into the seventh groove 1502. A fifth sliding block 1503 is provided at the lower end of the third telescopic column 1404, which can slide in the seventh groove 1502. The end of the fifth sliding block 1503 close to the third telescopic column 1404 is provided with a fourth inclined surface 1601; the bottom end of the fifth groove 1403 is provided with a fourth spring 1402 which is sleeved on the third telescopic column 1404 and squeezes the second telescopic column 1401; the fourth spring 1402 is used to keep the fourth inclined surface 1601 located at the seventh through hole 1206; the end of the first support seat 140 close to the base 1202 is provided with a wedge block 310 which passes through the seventh through hole 1206 and squeezes the fourth inclined surface 1601, and the contact end of the wedge block 310 with the fourth inclined surface 1601 is provided with an arc surface 320.

[0078] According to this embodiment, after the base 1202 is released, the fourth spring 1402 pushes the second telescopic column 1401 upward, so that the second curved plate 1208 fits against the side wall of the bent portion of the straight steel pipe to support the bent portion of the straight steel pipe, while increasing friction, thereby facilitating the movement of the bent portion of the straight steel pipe and driving the base 1202 to move.

[0079] When the base 1202 needs to be fixed, the wedge block 310 passes through the seventh through hole 1206 and squeezes the fourth inclined surface 1601 on the fifth sliding block 1503, causing the fifth sliding block 1503 to move downward, thereby driving the third telescopic column 1404 and the second telescopic column 1401 to move downward, thereby causing the second curved plate 1208 to move downward, so that the second curved plate 1208 is lower than the height of the first through hole 210, thereby preventing the second curved plate 1208 from being pushed out of the first through hole 210 when the straight steel pipe extends out of the first through hole 210.

[0080] In this embodiment, a vertical plate 220 is provided at the end of the first support seat 140 away from the mounting seat 101, a guide column 150 is provided between the vertical plate 220 and the mounting seat 101, and a first guide hole 420 and a second guide hole 1701 are respectively provided on the push plate 120 and the support plate for the guide column 150 to pass through.

[0081] Through this embodiment, the push plate 120 and the support plate are moved along the guide column 150 , thereby preferably improving the stability of the push plate 120 and the support plate during movement.

[0082] This embodiment provides a method for processing curved steel using a medium frequency hot bending device, the steps of which are as follows:

[0083] First, the straight steel pipe is hoisted onto the first support member 110 by a crane, and one end of the straight steel pipe is inserted into the first through hole 210, and the other end is inserted into the first blind hole 410; then the first motor 130 is started, so that the push plate 120 pushes one end of the straight steel pipe through the first through hole 210 and the medium frequency induction heating coil 720 and extends into the limiting hole 620; then the medium frequency induction heating coil 720 and the third motor 640 are started, and the third motor 640 drives the guide block 630 to rotate, and the push plate 120 continues to push the straight steel pipe so that the guide block 630 pushes the straight steel pipe Bending, when the straight steel pipe is pushed by the push plate 120, the straight steel pipe drives the support plate to move. When the support plate moves to the position of the mounting seat 101, the support plate pushes the extrusion block 1004, causing the first sliding block 1001 to squeeze the limit block upward, thereby causing the limit block to disengage from the fifth through hole 1201. At this time, the fourth spring 1402 pushes the second telescopic column 1401 upward, thereby causing the second arc plate 1208 to fit on the side wall of the bent portion of the straight steel pipe to support the bent portion of the straight steel pipe, and as the straight steel pipe moves, it drives the second support member 190 to move together.

[0084] According to this embodiment, during the pipe bending process, there is no need for workers to place the support frame. The support frame will be automatically placed in this method, thereby making it convenient for workers to support the bent portion of the steel pipe.

[0085] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on one or several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.

[0086] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The embodiments shown in the embodiments are only part of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above and, without departing from the purpose of the present invention, designs a structure and embodiment similar to the technical solution without creatively designing, they shall fall within the scope of protection of the present invention.

Claims

1. A medium frequency hot bending device, characterized by: The invention comprises a device body (100), wherein the device body (100) comprises a first support seat (140) in a rectangular shape, wherein a mounting seat (101) is provided at one end of the first support seat (140), and a first through hole (210) is provided at the mounting seat (101) for allowing a straight steel pipe to pass through the mounting seat (101); a push plate (120) is provided at the other end of the first support seat (140) for pushing the straight steel pipe through the first through hole (210); a first support member (120) is provided between the mounting seat (101) and the push plate (120) for supporting the straight steel pipe and being movable along the length direction of the first support seat (140) A support member (110); a second support member (190) is provided at one end of the mounting seat (101) away from the first support member (110); the second support member (190) includes a base (1202); a support frame (730) for supporting the bent portion of the straight steel pipe is provided at the upper end of the base (1202); and a universal wheel (1203) is provided at the lower end of the base (1202); a trigger mechanism is provided at the mounting seat (101), the trigger mechanism being used to fix the base (1202) to the mounting seat (101) and to release the base (1202) when triggered by the first support member (110); The mounting seat (101) is provided with mounting grooves (810) at both end side walls. A first partition plate (870) is provided in the mounting groove (810) along the length direction of the mounting groove (810). The first partition plate (870) divides the mounting groove (810) into a first sub-partition groove (820) and a second sub-partition groove (830). A second partition plate (860) is provided in the second sub-partition groove (830) to divide the second sub-partition groove (830) into a third sub-partition groove (850) and a fourth sub-partition groove (880). The first partition plate (870) is provided in the second sub-partition groove (830). 0) is provided with a second through hole (890) arranged along its length and communicating with the fourth sub-dividing groove (880), and the first dividing plate (870) is also provided with a third through hole (821) communicating with the third sub-dividing groove (850); the side wall of the mounting groove (810) corresponding to the third through hole (821) is recessed inward to form a first groove (910), and the side wall of the third sub-dividing groove (850) and the fourth sub-dividing groove (880) away from the second dividing plate (860) is respectively provided with a communicating hole (840) and a fourth through hole (801); The trigger mechanism includes a fixing member (930) disposed in the mounting groove (810) for fixing the base (1202), and a releasing member (950) for releasing the base (1202); the fixing member (930) includes a limiting block extending into the first groove (910), one end of the limiting block passing through the first sub-dividing groove (820) and the third through hole (821) and extending into the third sub-dividing groove (850); one end of the limiting block located in the first sub-dividing groove (820) and the third through hole (821) is recessed inward to form a second groove (1102); the second groove (1102) A first inclined surface (1101) is provided on the side wall near the first groove (910); a first sliding block (1001) and a second sliding block (1003) are provided in the first sub-dividing groove (820) and the fourth sub-dividing groove (880), respectively; a connecting plate (1005) is provided between the first sliding block (1001) and the second sliding block (1003) and passes through the second through hole (890) to connect the first sliding block (1001) and the second sliding block (1003); one end of the first sliding block (1001) is against the first inclined surface (1101); A first spring (920) is provided in the first groove (910) for pushing the limit block downward to squeeze the first sliding block (1001); an extrusion block (1004) extending out of the fourth through hole (801) is provided at the side wall of the second sliding block (1003); a second spring (940) is provided in the fourth sub-dividing groove (880) for pushing the second sliding block (1003) so that the extrusion block (1004) extends out of the fourth through hole (801); a blocking plate (710) is provided at the opening of the mounting groove (810) to block the mounting groove (810); a connecting block (1204) extending into the third sub-dividing groove (850) is provided at the side wall of the base (1202); and a fifth through hole (1201) for the limit block to pass through is provided at the connecting block (1204).

2. The medium frequency hot bending device according to claim 1, characterized in that: The end of the limit block extending into the third sub-dividing groove (850) is provided with a second inclined surface (1103); the end of the first sliding block (1001) in contact with the first inclined surface (1101) is provided with a third inclined surface (1002) that matches the first inclined surface (1101).

3. The medium frequency hot bending device according to claim 2, characterized in that: A first blind hole (410) is provided on the side wall of the push plate (120) and is arranged corresponding to the first through hole (210); a first sliding groove (510) is provided on the upper end surface of the first support seat (140) along its length direction, and a first threaded rod (530) is provided in the first sliding groove (510) along the length direction of the first sliding groove (510); a first motor (130) for driving the first threaded rod (530) to rotate is provided at one end of the first support seat (140) away from the mounting seat (101); a third sliding block (430) is provided on the lower end surface of the push plate (120) and extends into the first sliding groove (510), and a first threaded hole (440) is provided on the side wall of the third sliding block (430) to match the first threaded rod (530).

4. The medium frequency hot bending device according to claim 3, characterized in that: The first support member (110) includes a support plate arranged perpendicular to the first support seat (140) and located above the first support seat (140), the upper end surface of the support plate being recessed inward to form a third groove (1702) in the shape of a semicircle; a plurality of rollers (1704) are provided at the lower end surface of the support plate, and a second slide groove (520) is provided at the upper end surface of the first support seat (140) for the rollers (1704) to extend into and is arranged along the length direction of the first support seat (140).

5. The medium frequency hot bending device according to claim 4, characterized in that: A sixth through hole (1703) passing through the support plate is provided at the center of the support plate, a rectangular through hole (2001) communicating with the sixth through hole (1703) is provided at the bottom end surface of the third groove (1702), a second blind hole (2002) corresponding to the rectangular through hole (2001) is provided at the side wall of the lower end of the sixth through hole (1703), a second threaded rod (1804) passing through the sixth through hole (1703) and extending into the rectangular through hole (2001) is provided in the second blind hole (2002), and one end of the second threaded rod (1804) extending into the rectangular through hole (2001) is provided with a telescopic rod (1901) matching the rectangular through hole (2001). The upper end surface of the telescopic rod (1901) is recessed downward to form a fourth groove (1806); a first arc-shaped plate (1801) having a semicircular shape is provided in the third groove (1702); a first telescopic column (1802) extending into the fourth groove (1806) is provided at the side wall of the first arc-shaped plate (1801); a third spring (1803) for squeezing the first telescopic column (1802) is provided in the fourth groove (1806); a sleeve (1805) sleeved on the second threaded rod (1804) is provided in the sixth through hole (1703); an internal thread matching the second threaded rod (1804) is provided on the inner side wall of the sleeve (1805).

6. The medium frequency heat bending device according to claim 5, characterized in that: A guide mechanism (180) for bending a straight steel pipe is provided at a side wall of the first support seat (140) close to the mounting seat (101), the guide mechanism (180) comprising a second support seat (170) arranged perpendicular to the side wall of the first support seat (140), a third slide groove (550) arranged along the length direction of the second support seat (170) is provided on the upper end surface of the second support seat (170), and a third threaded rod (540) arranged along the length direction of the third slide groove (550) is provided in the third slide groove (550); a second motor (160) for driving the third threaded rod (540) to rotate is provided at one end of the second support seat (170) away from the mounting seat (101); a movable platform (670) is provided at the upper end of the second support seat (170), and a movable platform (670) is provided at the lower end of the movable platform (670). A fourth sliding block (650) extending into the third sliding groove (550) is provided on the surface of the movable platform (670), and a second threaded hole (660) matching the third threaded rod (540) is provided on the fourth sliding block (650); a rotating disk (680) is provided on the upper end surface of the movable platform (670), a cylinder (610) is provided on the side wall of the rotating disk (680), a guide block (630) is provided at one end of the cylinder (610) away from the rotating disk (680), and a limiting hole (620) is provided on the guide block (630) corresponding to the first through hole (210); the movable platform (670) is also provided with a third motor (640) for driving the rotating disk (680) to rotate; a medium-frequency induction heating coil (720) is provided at an opening of one end of the first through hole (210) close to the guide block (630).

7. The medium frequency heat bending device according to claim 6, characterized in that: The support frame (730) comprises a first support column (1207) arranged perpendicular to the base (1202); a second support column (1209) arranged obliquely and supporting the first support column (1207) is provided at the upper end of the base (1202); the top end of the first support column (1207) is recessed inward to form a fifth groove (1403); a second arc-shaped plate (1208) in a semicircular shape is provided at the upper end of the first support column (1207); a side wall of the bottom end of the second arc-shaped plate (1208) is provided which extends into the fifth groove (1403); 3) a second telescopic column (1401) inside; the bottom end surface of the fifth groove (1403) is recessed inward and extends into the base (1202) to form a sixth groove (1501); a seventh groove (1502) is provided at one end surface of the base (1202) close to the mounting seat (101) and communicates with the bottom end of the sixth groove (1501); a sealing plate (1205) is provided at the opening of the seventh groove (1502); the sealing plate (1205) and the side wall of the seventh groove (1502) together form a seventh through hole (1206); The lower end of the second telescopic column (1401) is provided with a third telescopic column (1404) which passes through the sixth groove (1501) and extends into the seventh groove (1502); the lower end of the third telescopic column (1404) is provided with a fifth sliding block (1503) which can slide in the seventh groove (1502); the end of the fifth sliding block (1503) close to the third telescopic column (1404) is provided with a fourth inclined surface (1601); the bottom end of the fifth groove (1403) is provided with a sleeve on the third telescopic column (14 04) and squeezes the fourth spring (1402) of the second telescopic column (1401); the fourth spring (1402) is used to keep the fourth inclined surface (1601) located at the seventh through hole (1206); an end of the first support seat (140) close to the base (1202) is provided with a wedge block (310) that passes through the seventh through hole (1206) and squeezes the fourth inclined surface (1601), and an arc surface (320) is provided at the contact end of the wedge block (310) and the fourth inclined surface (1601).

8. The medium frequency heat bending device according to claim 4, characterized in that: A vertical plate (220) is provided at one end of the first support seat (140) away from the mounting seat (101), a guide column (150) is provided between the vertical plate (220) and the mounting seat (101), and a first guide hole (420) and a second guide hole (1701) for the guide column (150) to pass through are respectively provided on the push plate (120) and the support plate.

9. A method for processing curved steel using a medium frequency hot bending device, implemented using the medium frequency hot bending device described in claim 7, comprising the following steps: First, the straight steel pipe is hoisted onto the first support member (110) by a crane, and one end of the straight steel pipe is inserted into the first through hole (210), and the other end is inserted into the first blind hole (410); then the first motor (130) is started, so that the push plate (120) pushes one end of the straight steel pipe through the first through hole (210) and the medium frequency induction heating coil (720) and into the limiting hole (620); then the medium frequency induction heating coil (720) and the third motor (640) are started, and the third motor (640) drives the guide block (630) to rotate, and the push plate (120) continues to push the straight steel pipe, so that the guide block (630) ) bends the straight steel pipe. When the straight steel pipe is pushed by the push plate (120), the straight steel pipe drives the support plate to move. When the support plate moves to the position of the mounting seat (101), the support plate pushes the extrusion block (1004), causing the first sliding block (1001) to squeeze the limit block upward, thereby causing the limit block to disengage from the fifth through hole (1201). At this time, the fourth spring (1402) pushes the second telescopic column (1401) upward, thereby causing the second arc plate (1208) to fit on the side wall of the bent portion of the straight steel pipe to support the bent portion of the straight steel pipe, and as the straight steel pipe moves, the second support member (190) is driven to move together.

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