Portable pre-embedded steel pipe bending tool

Abstract

This invention relates to the field of railway construction technology and provides a portable pre-embedded steel pipe bending tool. The steel pipe bending tool includes: a housing; a worktable, which is raised and lowered and stored in the housing via a lifting assembly; a clamping assembly, disposed on the worktable; a bend-fixing assembly, adjustable on the worktable; an angle-fixing assembly, which is composed of a beam component and a receiving component; and a pressing assembly. This device is simple to operate and convenient to use. The steel pipe to be bent is first fixed by the clamping assembly. After fixing, the bending point is determined by adjusting the bend-fixing assembly and the bending angle is determined by the angle-fixing assembly according to the actual bending requirements and dimensions. Finally, the steel pipe is pressed down by the pressing assembly to achieve bending. When the device is not in use, the worktable is lowered and stored in the housing via the lifting assembly, making it easy to move.

Description

Technical Field

[0001] This invention relates to the field of railway construction technology, specifically a portable tool for bending pre-embedded steel pipes. Background Technology

[0002] Railway transportation is a mode of land transportation in which locomotives pull trains that travel on two parallel rails. The rails provide an extremely smooth and hard medium on which the train wheels roll with minimal friction, making the ride more comfortable for passengers.

[0003] Railway construction involves the pre-embedding of steel pipes. Before the steel pipes are pre-embedded, some steel pipes need to be slightly bent to facilitate their use. The existing method of bending pipes is usually done by a pipe bending machine. However, due to the large structure of the pipe bending machine, it is very inconvenient to move and the bending accuracy is poor, which affects the subsequent use of the steel pipes.

[0004] Therefore, this invention proposes a portable pre-embedded steel pipe bending tool to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a portable pre-embedded steel pipe bending tool to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A portable pre-embedded steel pipe bending tool, the steel pipe bending tool comprising:

[0008] The box body has multiple sets of rollers symmetrically arranged at the bottom;

[0009] The workbench is retracted and stored in the housing via a lifting assembly.

[0010] A clamping assembly, located on the workbench, is used to clamp and fix the steel pipe to be bent.

[0011] A bend-fixing component, adjustablely mounted on the workbench, is used to determine the bending point of the steel pipe;

[0012] An angle-fixing component, which is composed of a beam component and a receiving component, is used to determine the bending angle of the steel pipe. The beam component is set independently and can be detachably sleeved on the steel pipe to be bent during use. The receiving component is set on the angle-fixing component.

[0013] The pressing component, located on the workbench, is used to press down the steel pipe after confirming the bending point and bending angle, thereby achieving bending.

[0014] In one alternative embodiment, the lifting assembly includes:

[0015] The lead screw has a through groove on each of the two opposite side walls of the housing, and a sliding plate is slidably engaged in each of the two through grooves. The worktable is fixed between the two sliding plates. A first boss is fixed on one of the two sliding plates. A second boss is fixed on the side wall of the housing near the first boss. The lead screw is rotatably mounted on the second boss. The end of the lead screw away from the second boss passes through the first boss and is threaded to it.

[0016] The first driving component is fixedly mounted on the second protrusion and is used to drive the lead screw to rotate.

[0017] In one alternative embodiment, the clamping assembly includes:

[0018] Two movable blocks are provided on the worktable. The two movable blocks are slidably locked in the sliding groove. Vertical plates are fixed and vertically provided on both movable blocks. Clamping plates are fixed on both vertical plates. Baffles are provided on both clamping plates to serve as reference points.

[0019] Adjustment components are used to move the two clamping plates closer together and further apart to clamp and loosen the steel pipe to be bent.

[0020] In one alternative embodiment: the fixed-bend assembly includes:

[0021] A sliding table, which is horizontally slidably mounted on the worktable;

[0022] The abutment block is mounted on the slide table via a sliding rod. The slide table is screwed with at least one first fastening knob for fixing the abutment block and at least one second fastening knob for fixing the slide table itself.

[0023] The workbench has a length scale line on one side wall, and the slide has a first pointer near the length scale line to indicate the length scale line value.

[0024] In one alternative embodiment, the beam component includes:

[0025] A sleeve, detachably fitted onto the steel pipe to be bent to keep the entire beam component fixed;

[0026] A beam emitter is provided, wherein a mounting block is fixedly mounted on the sleeve, and the beam emitter is rotatably mounted on the mounting block via a rotating shaft. An angle scale line is provided on the mounting block, and a second pointer for indicating the value of the angle scale line is fixedly mounted on the rotating shaft, and a fastening nut for fixing the beam emitter is screwed on it.

[0027] In one alternative: the receiving component is a light receiver, which is fixedly mounted on the slide table, and the linkage effect will only occur when the light beam emitted by the light beam emitter shines perpendicularly on the light receiver.

[0028] In one alternative embodiment: the pressure-down assembly includes:

[0029] Two one-way threaded rods are rotatably mounted on the workbench. Both one-way threaded rods are screwed with an internal threaded sleeve. Two telescopic rods are fixedly mounted on the internal threaded sleeve. A support rod is fixedly mounted at the end of each telescopic rod away from the internal threaded sleeve. A pressure band is fixedly mounted between the two support rods to press the steel pipe for bending.

[0030] The second driving component is fixedly mounted on the worktable and is used to drive the two one-way threaded rods to rotate synchronously in the same direction.

[0031] Compared with the prior art, the beneficial effects of the embodiments of the present invention are as follows:

[0032] This device has a compact and reasonable structure, is simple to operate, and is easy to use. The steel pipe to be bent is first fixed by the clamping component. After it is fixed, the bending point is determined by adjusting the bending component and the bending angle is determined by adjusting the angle component according to the actual bending requirements and dimensions. Finally, the steel pipe is pressed down by the pressing component to achieve bending. When the device is not in use, the lifting component drives the worktable to descend and store it in the box. It can then be directly pushed and moved, making it highly portable. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0034] Figure 2 This is a side view of the housing in an embodiment of the present invention.

[0035] Figure 3 This is a partial side view of the clamping component in an embodiment of the present invention.

[0036] Figure 4 This is a top view of the workbench in an embodiment of the present invention.

[0037] Figure 5 This is a schematic diagram of the fixed bending component in an embodiment of the present invention.

[0038] Figure 6 for Figure 1 Enlarged view of point A in the middle.

[0039] Figure 7 for Figure 1 Enlarged view of section B in the middle.

[0040] Figure 8 This is a schematic diagram of the structure of the pressure component in an embodiment of the present invention.

[0041] Figure reference numerals: 1-roller, 2-box, 3-worktable, 4-clamping assembly, 401-moving block, 402-vertical plate, 403-clamping plate, 404-slide groove, 405-double-sided threaded rod, 406-crank handle, 407-baffle plate, 5-push handle, 6-steel pipe body, 7-pressing assembly, 701-drive motor, 702-bevel gear transmission mechanism, 703-belt transmission mechanism, 704-one-way threaded rod, 705-internal threaded sleeve, 706-telescopic rod, 707-fixing bolt, 708-support rod, 709-pressure belt, 8-angle-fixing assembly, 801-beam component, 8011 - Mounting block, 8012 - Beam emitter, 8013 - Sleeve, 8014 - Angle scale line, 8015 - Second pointer, 8016 - Fastening nut, 8017 - Shaft, 802 - Receiver component, 9 - Lifting assembly, 901 - Through slot, 902 - Lead screw, 903 - Slide plate, 904 - First boss, 905 - Second boss, 906 - Lifting motor, 10 - Fixed bending assembly, 1001 - Slide table, 1002 - Slide rod, 1003 - Clamping block, 1004 - First fastening knob, 1005 - Second fastening knob, 1006 - First pointer, 1007 - Length scale line. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0043] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0044] Please see Figure 1 In this embodiment of the invention, a portable pre-embedded steel pipe bending tool is provided, the steel pipe bending tool comprising:

[0045] Box 2, the bottom of which is symmetrically provided with multiple sets of rollers 1;

[0046] Workbench 3 is installed in the box 2 by lifting and retracting via lifting assembly 9;

[0047] Clamping assembly 4 is provided on the workbench 3 and is used to clamp and fix the steel pipe to be bent.

[0048] The bending assembly 10 is adjustablely mounted on the workbench 3 and is used to determine the bending point of the steel pipe.

[0049] Angle-fixing component 8, which is composed of beam component 801 and receiving component 802, is used to determine the bending angle of the steel pipe. The beam component 801 is set independently and can be detachably sleeved on the steel pipe to be bent during use. The receiving component 802 is set on the bending component 10.

[0050] The pressing component 7 is located on the workbench 3 and is used to press down the steel pipe after confirming the bending point and bending angle, thereby achieving bending.

[0051] In this embodiment, the steel pipe to be bent is first fixed by the clamping component 4. After it is fixed, the bending point is determined by adjusting the bending component 10 and the bending angle is determined by the angle fixing component 8 according to the actual bending requirements and dimensions. Finally, the steel pipe is pressed down by the pressing component 7 to achieve bending. When the device is not in use, the lifting component 9 drives the worktable 3 to descend and store it in the box 2. Then it can be directly pushed and moved, which is very convenient and time-saving.

[0052] Furthermore, the housing 2 is also provided with a push handle 5 for the user to hold with both hands to push the device as a whole.

[0053] Please see Figure 2 In one embodiment of the present invention, the lifting assembly 9 includes:

[0054] The lead screw 902 has two through grooves 901 on opposite side walls of the housing 2, each running from top to bottom. Slide plates 903 are slidably engaged in both through grooves 901. The worktable 3 is fixed between the two slide plates 903. A first boss 904 is fixed on one of the slide plates 903. A second boss 905 is fixed on the side wall of the housing 2 near the first boss 904. The lead screw 902 is rotatably mounted on the second boss 905. The end of the lead screw 902 away from the second boss 905 passes through the first boss 904 and is threadedly driven to it.

[0055] The first driving component is fixedly mounted on the second boss 905 and is used to drive the lead screw 902 to rotate. The first driving component is a lifting motor 906, or it can be a lifting motor, as long as it can drive the lead screw 902 to rotate. This embodiment does not make any special limitation.

[0056] In this embodiment, the first driving component drives the lead screw 902 to rotate, thereby driving the worktable 3 to rise and fall. When it is necessary to bend the pipe, the worktable 3 rises from the housing 2. After use, the worktable 3 falls back into the housing 2. It can be moved directly by pushing, which is very convenient and has good portability.

[0057] Furthermore, the lifting component 9 can also be lifted by an electric telescopic rod, as long as it can lift the worktable 3 from the box 2 and lower it into the box 2. This embodiment does not make any special limitation here.

[0058] Please see Figure 3 and Figure 4In one embodiment of the present invention, the clamping assembly 4 includes:

[0059] Two movable blocks 401 are provided. The worktable 3 is provided with a sliding groove 404. Both movable blocks 401 are slidably locked in the sliding groove 404. Vertical plates 402 are fixed and vertically provided on both movable blocks 401. Clamping plates 403 are fixed on both vertical plates 402. Baffles 407 for serving as reference points are provided on both clamping plates 403.

[0060] An adjusting component is used to move the two clamping plates 403 closer together and further apart to clamp and loosen the steel pipe to be bent. The adjusting component is a bidirectional threaded rod 405, which is symmetrically screwed into the two vertical plates 402. One end of the bidirectional threaded rod 405 is provided with a crank for rotating it. In addition to the bidirectional threaded rod 405, the two movable blocks 401 can also be directly pushed by an electric push rod to move the two clamping plates 403 closer together and further apart.

[0061] In this embodiment, one end of the steel pipe to be bent is placed against the baffle 407, and then the two vertical plates 402 are moved towards each other by rotating the bidirectional threaded rod 405, which in turn drives the two clamping plates 403 to clamp and fix the steel pipe to be bent for subsequent bending operations.

[0062] Furthermore, in this embodiment, protective pads are fixedly affixed to the opposite end faces of the two clamping plates 403 to prevent the steel pipe from being damaged or scratched when the clamping plates 403 clamp it.

[0063] Please see Figures 4-6 In one embodiment of the present invention, the bending assembly 10 includes:

[0064] The slide table 1001 is horizontally slidably mounted on the worktable 3;

[0065] The abutment block 1003 is mounted on the slide table 1001 via a sliding rod 1002. The slide table 1001 is screwed with at least one first fastening knob 1004 for fixing the abutment block 1003 and at least one second fastening knob 1005 for fixing the slide table 1001 itself.

[0066] The workbench 3 has a length scale line 1007 on one side wall, and the slide 1001 has a first pointer 1006 for indicating the value of the length scale line 1007 near the length scale line 1007.

[0067] In this embodiment, the bending point of the steel pipe is adjusted by sliding the slide table 1001. The "zero point" of the length scale line 1007 is the vertical distance between the end face of the baffle 407 toward the fixed bending component 10 and the starting point of the length scale line 1007. This value is fixed. After the slide table 1001 is slidably adjusted to adjust the bending point of the steel pipe, the second fastening knob 1005 is tightened. Since the diameter of the steel pipe varies each time it is bent, the clamping block 1003 needs to be pulled up to press against the steel pipe wall and the first fastening knob 1004 needs to be tightened to maintain this state.

[0068] Please see Figure 7 In one embodiment of the present invention, the beam component 801 includes:

[0069] Sleeve 8013 is detachably fitted onto the steel pipe to be bent to keep the entire beam component 801 fixed.

[0070] A beam emitter 8012 is provided, and a mounting block 8011 is fixedly provided on the sleeve 8013. The beam emitter 8012 is rotatably mounted on the mounting block 8011 via a rotating shaft 8017. An angle scale line 8014 is provided on the mounting block 8011. A second pointer 8015 for indicating the value of the angle scale line 8014 is fixedly sleeved on the rotating shaft 8017, and a fastening nut 8016 for fixing the beam emitter 8012 is screwed on it.

[0071] The receiving component 802 is a light receiver, which is fixed on the slide table 1001. The linkage effect will only occur when the light beam emitted by the light beam emitter 8012 shines perpendicularly on the light receiver.

[0072] In this embodiment, the beam component 801 is fixedly sleeved onto the steel pipe to be bent by the sleeve 8013, so that the beam emitted by the beam emitter 8012 is parallel to the steel pipe to be bent. At this time, the second pointer 8015 points to the zero point of the angle scale line 8014. Then, according to the bending angle requirement, the beam emitter 8012 is rotated so that the second pointer 8015 points to the corresponding value of the angle scale line 8014 and the fastening nut 8016 is tightened to maintain this state. When the steel pipe is bent to the set angle by the pressing component 7, the beam emitted by the beam emitter 8012 is exactly perpendicular to the light receiver. At this time, the pressing component 7 stops pressing and resets, realizing precise bending. The above linkage effect can be achieved by existing control technology, so it will not be described in detail here.

[0073] Please see Figure 8 In one embodiment of the present invention, the pressing component 7 includes:

[0074] Two one-way threaded rods 704 are rotatably mounted on the workbench 3. An internal threaded sleeve 705 is screwed onto both one-way threaded rods 704. Two telescopic rods 706 are fixedly mounted on the internal threaded sleeve 705. A support rod 708 is fixedly mounted at the end of each of the two telescopic rods 706 away from the internal threaded sleeve 705. A pressure band 709 for pressing the steel pipe for bending is fixedly mounted between the two support rods 708.

[0075] The second driving component is fixedly mounted on the worktable 3 and is used to drive the two one-way threaded rods 704 to rotate synchronously and in the same direction. The second driving component is a drive motor 701, which can also be other devices that can output rotational power, such as a hydraulic motor. The output shaft of the drive motor 701 is connected to one of the two one-way threaded rods 704 through a bevel gear transmission mechanism 702, and the two one-way threaded rods 704 are connected to each other through a belt transmission mechanism 703. The drive motor 701 can also be an electric motor. The bevel gear transmission mechanism 702 can also be the drive motor 701 directly driving the one-way threaded rod 704. The belt transmission mechanism 703 can also be replaced by a sprocket transmission mechanism, as long as it can achieve synchronous and co-directional rotation of the two one-way threaded rods 704. This embodiment does not make any special limitations.

[0076] In this embodiment, the internal threaded sleeve 705 is raised and lowered by driving the two one-way threaded rods 704 to rotate synchronously and in the same direction by the drive motor 701. When the internal threaded sleeve 705 descends, it drives the pressure band 709 to press down the steel pipe and bend it downward. The purpose of setting the pressure band 709 is that the pressure band 709 is a soft strip shape, which protects the steel pipe when bending it and prevents the steel pipe from being dented or scratched.

[0077] Furthermore, in this embodiment, the pressing component 7 can also be used to press down the steel pipe through the extension and retraction of a hydraulic rod to achieve bending. This embodiment does not make any special limitation here.

[0078] Furthermore, in this embodiment, the telescopic rod 706 is formed by two pipes of different diameters slidingly connected. The telescopic rod 706 is screwed with a fixing bolt 707 for positioning its length. The length of the two telescopic rods 706 can be adjusted according to the length of the steel pipe to be bent so that the pressure band 709 can press the steel pipe for bending.

[0079] The above embodiments of the present invention provide a portable pre-embedded steel pipe bending tool. The steel pipe to be bent is first fixed by the clamping component 4. After it is fixed, the bending point is determined by adjusting the bending component 10 and the bending angle is determined by the angle fixing component 8 according to the actual bending requirements and dimensions. Finally, the steel pipe is pressed down by the pressing component 7 to achieve bending. When the device is not in use, the lifting component 9 drives the worktable 3 to descend and store it in the box 2. Then it can be directly pushed and moved, which is very convenient and time-saving.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable tool for bending pre-embedded steel pipes, characterized in that, The steel pipe bending tool includes: Enclosure: The workbench is retracted and stored in the housing via a lifting assembly. A clamping assembly, located on the workbench, is used to clamp and fix the steel pipe to be bent. A bend-fixing component, adjustablely mounted on the workbench, is used to determine the bending point of the steel pipe; An angle-fixing component, which is composed of a beam component and a receiving component, is used to determine the bending angle of the steel pipe. The beam component is set independently and can be detachably sleeved on the steel pipe to be bent during use. The receiving component is set on the angle-fixing component. A pressing component, located on the workbench, is used to press down the steel pipe after confirming the bending point and bending angle, thereby achieving bending. A sleeve, detachably fitted onto the steel pipe to be bent to keep the entire beam component fixed; A beam emitter, wherein a mounting block is fixedly provided on the sleeve, the beam emitter is rotatably mounted on the mounting block via a rotating shaft, the mounting block is provided with angle scale lines, a second pointer for indicating the value of the angle scale lines is fixedly sleeved on the rotating shaft, and a fastening nut for fixing the beam emitter is screwed on it. The receiving component is a light receiver, which is fixedly mounted on the slide.

2. The portable pre-embedded steel pipe bending tool according to claim 1, characterized in that, The lifting assembly includes: The lead screw has a through groove on each of the two opposite side walls of the housing, and a sliding plate is slidably engaged in each of the two through grooves. The worktable is fixed between the two sliding plates. A first boss is fixed on one of the two sliding plates. A second boss is fixed on the side wall of the housing near the first boss. The lead screw is rotatably mounted on the second boss. The end of the lead screw away from the second boss passes through the first boss and is threaded to it. The first driving component is fixedly mounted on the second protrusion and is used to drive the lead screw to rotate.

3. The portable pre-embedded steel pipe bending tool according to claim 1, characterized in that, The clamping assembly includes: Two movable blocks are provided on the worktable. The two movable blocks are slidably locked in the sliding groove. Vertical plates are fixed and vertically provided on both movable blocks. Clamping plates are fixed on both vertical plates. Baffles are provided on both clamping plates to serve as reference points. Adjustment components are used to move the two clamping plates closer together and further apart to clamp and loosen the steel pipe to be bent.

4. The portable pre-embedded steel pipe bending tool according to claim 1, characterized in that, The fixed-bend assembly includes: A sliding table, which is horizontally slidably mounted on the worktable; The abutment block is mounted on the slide table via a sliding rod. The slide table is screwed with at least one first fastening knob for fixing the abutment block and at least one second fastening knob for fixing the slide table itself. The workbench has a length scale line on one side wall, and the slide has a first pointer for indicating the length scale line value near the length scale line.

5. The portable pre-embedded steel pipe bending tool according to claim 1, characterized in that, The pressing component includes: Two one-way threaded rods are rotatably mounted on the workbench. Both one-way threaded rods are screwed with an internal threaded sleeve. Two telescopic rods are fixedly mounted on the internal threaded sleeve. A support rod is fixedly mounted at the end of each telescopic rod away from the internal threaded sleeve. A pressure band is fixedly mounted between the two support rods to press the steel pipe for bending. The second driving component is fixedly mounted on the worktable and is used to drive the two one-way threaded rods to rotate synchronously in the same direction.

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