U-shaped folding device of seamless heat exchange steel pipe for heat exchanger
By designing a folding U-shaped device including a positioning sleeve, a positioning inner rod and a middle fixed rod, the problem of position deviation of seamless heat exchange steel pipes during the folding U-shaped process is solved, and the stability and accuracy of the bending angle of the steel pipe are achieved.
Patent Information
- Application Number
- CN202420577464.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-25
AI Technical Summary
The seamless heat exchange steel pipes used on existing heat exchangers are prone to deviation in position during the U-shape process, resulting in unsatisfactory bending angle and position.
A folding U-shaped device including a base, a support frame, an inner rod frame, a sleeve frame and a flip mechanism is designed. By setting the positioning sleeve and positioning inner rod, the steel pipe remains positioned during the bending process, and the middle fixed rod and arc surface further stabilize the bending angle of the steel pipe.
It effectively avoids the position deviation of the steel pipe during bending, ensures the stability and accuracy of the bending angle, and improves the quality of the U-shaped steel pipe.
Smart Images
Figure CN222551782U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to bending equipment, in particular to a U-shaped bending device for a seamless heat exchange steel pipe used in a heat exchanger. Background Art
[0002] Most of the existing heat exchange steel pipes on the heat exchanger are composed of many U-shaped heat exchange steel pipes. These U-shaped bent pipes need to be bent from straight heat exchange steel pipes into a U shape during processing. These heat exchange steel pipes are all seamless steel pipes with good bending performance and are easy to be bent into a U shape. The existing devices for bending these seamless heat exchange steel pipes into a U shape still have some shortcomings when performing the U-shaped bending work. The heat exchange steel pipes are prone to position deviation during the bending process, resulting in unsatisfactory bending angles and positions. In view of the above problems, this application makes improvements. Utility Model Content
[0003] The utility model provides a U-shaped folding device for a seamless heat exchange steel pipe used in a heat exchanger, which solves the above-mentioned problems existing in the use process of the prior art.
[0004] The technical solution of the utility model is achieved as follows: a U-shaped folding device for a seamless heat exchange steel pipe for a heat exchanger comprises a base, support frames are symmetrically fixedly connected on the left and right sides of the base, an inner rod frame is arranged between the support frames, the base is symmetrically provided with mounting seats in front of the support frames, a sleeve frame is arranged between the mounting seats, the sleeve frame is located at the front side of the inner rod frame, and a flipping mechanism for driving the sleeve frame to flip toward the top of the inner rod frame is provided on the mounting seat, the inner rod frame comprises a connecting seat fixed on the support frame at both ends and a positioning inner rod fixedly connected to the front end of the connecting seat, and the sleeve frame comprises a plurality of positioning sleeves, and the position and number of the positioning sleeves correspond to the positioning inner rod.
[0005] Preferably, a middle shaping rod is provided between the inner rod frame and the sleeve frame, the front side of the middle shaping rod is provided with an arc surface, a cross rod is fixedly provided between the mounting seats, and the middle shaping rod is provided with a plurality of connecting rods fixed to the cross rod.
[0006] Preferably, the sleeve rack also includes a connecting arm and a clamping plate, wherein two connecting arms are symmetrically arranged on the left and right, a rotating shaft is fixedly connected to the connecting arm, and the rotating shaft is rotatably connected to the mounting seat, and a plurality of clamping plates are provided, and the two ends of the clamping plate are respectively fixed on the two connecting arms, and the positioning sleeve is fixedly connected to the clamping plate.
[0007] Preferably, the flipping mechanism includes a motor, a first gear, a second gear, a first toothed belt and a synchronous shaft, the two ends of the synchronous shaft are respectively rotatably connected to the mounting seats on both sides of the support frame, the mounting seat is provided with a third gear connected to the synchronous shaft and a fourth gear connected to the rotating shaft, a second toothed belt is meshed between the third gear and the fourth gear, the second gear is connected to the middle part of the synchronous shaft, the motor is fixedly mounted on the base, the first gear is fixed to the output shaft of the motor, and the first toothed belt is meshed between the first gear and the second gear.
[0008] Preferably, the end of the positioning sleeve away from the positioning inner rod is provided with an easy-entry expansion opening that expands outwards.
[0009] Preferably, a movable push plate is provided on the inner rod frame, and the movable push plate is slidably arranged on the positioning inner rod. A cylinder frame is fixedly arranged on the base, and a first cylinder is provided on the cylinder frame. The output shaft of the first cylinder is connected to the movable push plate.
[0010] Preferably, a second cylinder is provided on the support frame, the second cylinder is connected to a push rod frame, and the push rod frame is connected to push rods corresponding to the position and number of the positioning sleeves.
[0011] In summary, the beneficial effects of the present invention are:
[0012] 1. When the utility model folds the heat exchange steel pipe into a U shape, the heat exchange steel pipe is firstly put into the positioning sleeve, passed through the positioning sleeve and then sleeved outside the positioning inner rod. At this time, half of the heat exchange steel pipe is located in the positioning sleeve and the other half is located outside the positioning inner rod. Then, the turning mechanism drives the sleeve frame to turn over toward the upper part of the inner rod frame, so that the heat exchange steel pipe is folded into a U shape. Then, the heat exchange steel pipe folded into a U shape can be directly taken out forward. The utility model can position the heat exchange steel pipe by setting the positioning sleeve and the positioning inner rod, so that it is not easy to deviate from the position during the bending process.
[0013] 2. The middle shaping rod uses the arc surface to position the middle part of the heat exchange steel pipe for bending, so that the heat exchange steel pipe can be more stable during the bending process and the bending angle will not deviate too much. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0015] Figure 1It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 for Figure 1 Schematic diagram of the structure when observed from another angle;
[0017] Figure 3 for Figure 2 A schematic diagram of the structure without the second cylinder, the ejector bracket and the ejector;
[0018] Figure 4 It is a schematic diagram of the structure of the utility model after the casing frame is flipped over to the top of the inner rod frame;
[0019] Figure 5 for Figure 4 Schematic diagram of the structure when observed from another angle;
[0020] Figure 6 This is a schematic diagram of the structure of the heat exchange steel pipe being folded into a U shape in the utility model;
[0021] Figure 7 It is a cross-sectional view of the heat exchange steel pipe being folded into a U shape in the utility model;
[0022] Figure 8 It is a schematic diagram of the cross-sectional structure inside the mounting seat of the utility model;
[0023] Fig. 9 It is a schematic diagram of the structure of the heat exchange steel tube after being folded into a U shape.
[0024] In the figure: 1, base; 11, support frame; 12, mounting seat; 13, cylinder frame; 2, inner rod frame; 21, connecting seat; 22, positioning inner rod; 3, sleeve frame; 31, positioning sleeve; 311, easy-entry expansion port; 32, connecting arm; 33, clamping plate; 34, rotating shaft; 4, middle shaping rod; 41, arc surface; 42, cross bar; 43, connecting rod; 51, motor; 52, first gear; 53, second gear; 54, first toothed belt; 55, synchronous shaft; 56, third gear; 57, fourth gear; 58, second toothed belt; 61, movable push plate; 62, first cylinder; 71, second cylinder; 72, push rod frame; 73, push rod; 8, heat exchange steel pipe. DETAILED DESCRIPTION
[0025] The following will be combined with the attached embodiment of the utility model Figure 1-9 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] Example:
[0027] like Figures 1 to 8 As shown, the utility model discloses a U-shaped folding device for a seamless heat exchange steel pipe for a heat exchanger, comprising a base 1, on the left and right sides of which support frames 11 are symmetrically fixedly connected, and an inner rod frame 2 is provided between the support frames 11. In addition, the base 1 is symmetrically provided with a mounting seat 12 in front of the support frame 11, and a sleeve frame 3 is provided between the mounting seats 12. The sleeve frame 3 is located at the front side of the inner rod frame 2, and a flipping mechanism for driving the sleeve frame 3 to flip toward the top of the inner rod frame 2 is provided on the mounting seat 12, wherein the inner rod frame 2 comprises a connecting seat 21 fixed on the support frame 11 at both ends and a positioning inner rod 22 fixedly connected to the front end of the connecting seat 21, and the sleeve frame 3 comprises a plurality of positioning sleeves 31, and the position and number of the positioning sleeves 31 correspond to the positioning inner rod 22. The present application can bend multiple heat exchange steel pipes at the same time.
[0028] Furthermore, a middle shaping rod 4 is provided between the inner rod frame 2 and the sleeve frame 3, and an arc surface 41 is provided on the front side of the middle shaping rod 4, and the arc surface 41 matches the arc angle of the inner side of the heat exchange steel pipe after bending. In order to fix the middle shaping rod 4, a cross bar 42 is fixedly provided between the mounting seats 12, and a plurality of connecting rods 43 fixed to the cross bar 42 are provided on the middle shaping rod 4.
[0029] When the utility model is bending the heat exchange steel tube 8, the initial state of the utility model is as follows Figure 1 and Figure 2 As shown, the utility model can be placed behind the pipe conveying equipment, and the heat exchange steel pipe is pushed into the positioning sleeve 31 through the pipe conveying equipment. Otherwise, the heat exchange steel pipe can be manually put in by a worker. The heat exchange steel pipe first passes through the positioning sleeve 31 and then is sleeved outside the positioning inner rod 22. At this time, half of the heat exchange steel pipe is located in the positioning sleeve 31 and the other half is located outside the positioning inner rod 22. Then the turning mechanism drives the sleeve frame 3 to turn over toward the top of the inner rod frame 2, as shown in FIG. Figure 6 and Figure 7 As shown, when the heat exchange steel pipe 8 is bent, the heat exchange steel pipe portion 8 is supported on the arc surface 41 of the middle shaping rod 4, and when the sleeve frame 3 is turned over to be parallel to the upper side of the inner rod frame 2, the U-shaped bending operation is completed.
[0030] In the utility model, the sleeve rack 3 also includes a connecting arm 32 and a clamping plate 33. Two connecting arms 32 are symmetrically arranged on the left and right. A rotating shaft 34 is fixedly connected to the connecting arm 32. The rotating shaft 34 is rotatably connected to the mounting seat 12. The clamping plate 33 is provided with a plurality of roots, and the two ends of the clamping plate 33 are respectively fixed on the two connecting arms 32, and the positioning sleeve 31 is fixedly connected to the clamping plate 33.
[0031] Further, such as Figure 1 and Figure 8 As shown, the flip mechanism includes a motor 51, a first gear 52, a second gear 53, a first toothed belt 54 and a synchronous shaft 55. The two ends of the synchronous shaft 55 are rotatably connected to the mounting seats 12 on both sides of the support frame 11. A third gear 56 connected to the synchronous shaft 55 and a fourth gear 57 connected to the rotating shaft 34 are provided in the mounting seat 12. A second toothed belt 58 is meshed between the third gear 56 and the fourth gear 57. The second gear 53 is fixedly connected to the middle part of the synchronous shaft 55. The motor 51 is fixedly mounted on the base 1. The first gear 52 is fixedly mounted on the base 1. On the output shaft of the motor 51, the first toothed belt 54 is meshed and arranged between the first gear 52 and the second gear 53. When it is necessary to drive the sleeve rack 3 to flip, the motor 51 drives the first gear 52 to rotate, and the second gear 53 is driven by the action of the first toothed belt 54 to rotate the synchronous shaft 55. The synchronous shaft 55 drives the third gear 56 to drive the fourth gear 57 through the second toothed belt 58, so that the rotating shaft 34 rotates to drive the connecting arm 32, so that the entire sleeve rack 3 is flipped. It should be noted that the cooperation of the above-mentioned gears and toothed belts can also be replaced by sprockets and chains.
[0032] In order to facilitate the heat exchange steel pipe in the utility model Figure 1 As shown, the positioning sleeve 31 is entered from the front side, and an easy-entry expansion opening 311 that expands outward is provided at one end of the positioning sleeve 31 away from the positioning inner rod 22 .
[0033] In the utility model, in order to quickly remove the heat exchange steel pipe that has been folded into a U shape, a movable push plate 61 is provided on the inner rod frame 2, and the movable push plate 61 is slidably set on the positioning inner rod 22. A cylinder frame 13 is fixedly set on the base 1, and a first cylinder 62 is provided on the cylinder frame 13. The output shaft of the first cylinder 62 is connected to the movable push plate 61.
[0034] In addition, a second cylinder 71 is provided on the support frame 11 , and a push rod frame 72 is connected to the second cylinder 71 , and push rods 73 corresponding to the position and number of the positioning sleeves 31 are connected to the push rod frame 72 .
[0035] After the heat exchange steel tube is folded into a U shape, Figure 6 and Figure 7 As shown, at this time, the first cylinder 62 drives the movable push plate 61 to move forward, the second cylinder 71 pushes the push rod frame 72 to move the push rod 73 forward, the push plate pushes the heat exchange steel pipe sleeved on the positioning inner rod 22, and the push rod 73 enters the positioning sleeve 31 to push the heat exchange steel pipe in the positioning sleeve 31, so that the U-shaped part after the U-shape is completed is pushed forward. After the heat exchange steel pipe is taken away, the flip mechanism drives the sleeve frame 3 to return to the position as shown in the figure. Figure 1 In the state shown, the heat exchange steel tube 8 after being folded into a U shape is as shown in FIG. Fig. 9 shown.
[0036] It should also be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.
[0037] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A U-shaped folding device for a seamless heat exchange steel tube for a heat exchanger, comprising a base, characterized in that: The base is symmetrically fixed with support frames on the left and right sides, an inner rod frame is provided between the support frames, the base is symmetrically provided with mounting seats in front of the support frames, a sleeve frame is provided between the mounting seats, the sleeve frame is located in the front side of the inner rod frame, and the mounting seat is provided with a flipping mechanism for driving the sleeve frame to flip toward the top of the inner rod frame. The inner rod frame includes a connecting seat fixed on the support frame at both ends and a positioning inner rod fixedly connected to the front end of the connecting seat, and the sleeve frame includes a plurality of positioning sleeves, and the position and number of the positioning sleeves correspond to the positioning inner rod.
2. The U-shaped folding device for a seamless heat exchange steel tube for a heat exchanger according to claim 1, characterized in that: A middle shaping rod is arranged between the inner rod frame and the sleeve frame, a circular arc surface is arranged on the front side of the middle shaping rod, a cross rod is fixedly arranged between the mounting seats, and a plurality of connecting rods fixed to the cross rod are arranged on the middle shaping rod.
3. The U-shaped folding device for a seamless heat exchange steel tube for a heat exchanger according to claim 2, characterized in that: The sleeve rack also includes a connecting arm and a clamping plate. The connecting arms are symmetrically arranged with two each other. A rotating shaft is fixedly connected to the connecting arm. The rotating shaft is rotatably connected to the mounting seat. The clamping plate is provided with a plurality of roots. The two ends of the clamping plate are respectively fixed to the two connecting arms. The positioning sleeve is fixedly connected to the clamping plate.
4. The U-shaped folding device for a seamless heat exchange steel tube for a heat exchanger according to claim 3, characterized in that: The flipping mechanism includes a motor, a first gear, a second gear, a first toothed belt and a synchronous shaft, the two ends of the synchronous shaft are respectively rotatably connected to the mounting seats on both sides of the support frame, a third gear connected to the synchronous shaft and a fourth gear connected to the rotating shaft are provided in the mounting seat, a second toothed belt is meshed between the third gear and the fourth gear, the second gear is connected to the middle part of the synchronous shaft, the motor is fixedly mounted on the base, the first gear is fixed on the output shaft of the motor, and the first toothed belt is meshed between the first gear and the second gear.
5. The U-shaped folding device for a seamless heat exchange steel tube for a heat exchanger according to claim 1, characterized in that: An end of the positioning sleeve away from the positioning inner rod is provided with an easy-entry expansion opening expanding outwards.
6. The U-shaped folding device for a seamless heat exchange steel tube for a heat exchanger according to claim 1, characterized in that: The inner rod frame is provided with a movable push plate, which is slidably arranged on the positioning inner rod. The base is fixedly provided with a cylinder frame, which is provided with a first cylinder, and the output shaft of the first cylinder is connected to the movable push plate.
7. The U-shaped folding device for a seamless heat exchange steel tube for a heat exchanger according to claim 1, characterized in that: The support frame is provided with a second cylinder, the second cylinder is connected to a push rod frame, and the push rod frame is connected to push rods corresponding to the position and number of the positioning sleeves.