Hydraulic pipe expander capable of avoiding butt joint deviation
By adjusting the design of the support frame and mold structure, the problem of offset when expanding pipes of different sizes by the hydraulic pipe expander was solved, achieving precise alignment and quick replacement, thus improving the efficiency and applicability of the pipe expander.
Patent Information
- Application Number
- CN202423004230.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-06
AI Technical Summary
When expanding pipes of different sizes, existing hydraulic pipe expanders are prone to deviations between the pipe and the center of the expanding mold, resulting in offset and affecting the expanding effect.
By designing an adjustable support frame and mold structure, including screws, wedges, and movable frames, the horizontal and vertical positions of the lower mold base can be adjusted to ensure that the pipe centerline is aligned with the pipe expansion mold and to avoid misalignment.
It effectively avoids misalignment during pipe expansion, ensures consistent pipe expansion results, and supports quick replacement and fixing of pipes of different sizes.
Smart Images
Figure CN223518474U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydraulic pipe expander technical field, specifically to a kind of hydraulic pipe expander of avoid docking deviation. BACKGROUND
[0002] Hydraulic pipe expander is a kind of equipment for pipe processing, mainly for expanding the diameter of pipeline or changing the shape of pipeline. This machine is widely used in petroleum, chemical industry, electric power, construction and other industries. The main components of hydraulic pipe expander include power device (usually hydraulic system), pipe expanding die and control system.
[0003] The existing hydraulic pipe expander expands the pipe of different sizes, and the overall size of the pipe changes, so that the center position between the pipe and the pipe expanding die deviates, so that the pipe expands and deviates, which affects the pipe expanding effect. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of hydraulic pipe expander of avoid docking deviation to solve the problem of easy deviation of the hydraulic pipe expander used at present proposed in the above background.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of hydraulic pipe expander of avoid docking deviation, comprising: operating table and upper die holder, the top of the operating table is equipped with hydraulic cylinder by fixed frame, one side of the hydraulic cylinder is connected with first movable frame, one side of the first movable frame is equipped with pipe expanding die, one side of the pipe expanding die is provided with support frame, the top of the support frame is provided with lower die holder, the upper die holder is installed at the bottom of support frame by cylinder;
[0006] The bottom of the support frame is equipped with second movable frame, the bottom of the second movable frame is equipped with sliding block, one side of the second movable frame is equipped with fixed block, the middle of the fixed block is connected with screw rod, the bottom of the screw rod is equipped with clamping block, the bottom of the clamping block is connected with rack between the recess of operating table top.
[0007] Preferably, one side of the support frame is connected with threaded rod.
[0008] Preferably, one side of the threaded rod is connected with lower wedge block through bearing, the top of the lower wedge block is provided with upper wedge block penetrating the second movable frame.
[0009] Preferably, the bottom of the lower die holder is equipped with plug-in block, the both sides of the plug-in block are inserted with limiting block.
[0010] Preferably, the side of the limiting block away from the plug-in block is equipped with rotating block.
[0011] Preferably, the two groups of rotating blocks are connected with movable blocks through the rotating shaft, and the two groups of movable blocks are connected with the rotating shaft penetrating the support frame.
[0012] Preferably, the rotating block is provided with an elastic block away from the side of the plug block, and the elastic block is connected with the movable spring between the groove of the support frame.
[0013] Compared with the prior art, the hydraulic pipe expanding machine capable of avoiding butt joint deviation has the following beneficial effects: when in use, the screw rod can be rotated according to the position of the lower die seat, so that the screw rod drives the clamping block to separate from the rack in the groove on the top of the operation table, then the horizontal position of the second movable frame and the support frame can be adjusted, the threaded rod can be rotated, so that the lower wedge block drives the upper wedge block to move, thereby the vertical position of the lower die seat can be adjusted, and the situation that the pipe deviates during pipe expansion can be avoided.
[0014] 1. The hydraulic pipe expanding machine capable of avoiding butt joint deviation can rotate the screw rod according to the position of the lower die seat during use, so that the screw rod drives the clamping block to separate from the rack, then the horizontal position of the second movable frame and the support frame can be adjusted, and the threaded rod can be rotated, so that the lower wedge block drives the upper wedge block to move, thereby the vertical position of the lower die seat can be adjusted, and the situation that the pipe deviates during pipe expansion can be avoided.
[0015] 2. The hydraulic pipe expanding machine capable of avoiding butt joint deviation can rotate the rotating shaft according to the size of the pipe during use, so that the rotating shaft drives the movable block to rotate, the movable block will extrude the rotating blocks on both sides when rotating, so that the limiting block on one side of the rotating block moves out of the groove of the plug block, without the limiting effect of the limiting block on the rotating block, the lower die seat can be disassembled from the top of the support frame, thereby the upper die seat can be conveniently replaced, and pipes of different sizes can be clamped and positioned. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a front view of the structure of the utility model;
[0017] Figure 2 It is a front view of the structure of the utility model;
[0018] Figure 3 It is a left side structure diagram of the second movable frame of the utility model;
[0019] Figure 4 It is a front view of the structure of the utility model;
[0020] Figure 5 It is the schematic diagram of the three-dimensional structure of the lower die seat of the utility model.
[0021] In the figure: 1, operation platform; 2, hydraulic cylinder; 3, first movable frame; 4, pipe expanding die; 5, support frame; 6, lower die seat; 7, upper die seat; 8, second movable frame; 9, fixed block; 10, screw rod; 11, clamping block; 12, rack; 13, threaded rod; 14, lower wedge block; 15, upper wedge block; 16, plug-in block; 17, limiting block; 18, rotating block; 19, movable block; 20, rotating shaft; 21, telescopic block; 22, movable spring. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0023] Please refer to Figure 1 The utility model provides a kind of technical scheme: a kind of hydraulic pipe expander that can avoid docking offset, it includes: operation platform 1 and upper die seat 7, the top of operation platform 1 is equipped with hydraulic cylinder 2 by fixed frame, one side of hydraulic cylinder 2 is connected with first movable frame 3, one side of first movable frame 3 is equipped with pipe expanding die 4, one side of pipe expanding die 4 is provided with support frame 5, the top of support frame 5 is provided with lower die seat 6, upper die seat 7 is installed in the bottom of support frame 5 by cylinder;
[0024] The bottom of support frame 5 is equipped with second movable frame 8, the bottom of second movable frame 8 is equipped with sliding block, one side of second movable frame 8 is equipped with fixed block 9, the middle of fixed block 9 is connected with screw rod 10, the bottom of screw rod 10 is equipped with clamping block 11, the bottom of clamping block 11 is connected with rack 12 between the recess of the top of operation platform 1, one side of support frame 5 is connected with threaded rod 13, one side of threaded rod 13 is connected with lower wedge block 14 by bearing, the top of lower wedge block 14 is provided with upper wedge block 15 that passes through second movable frame 8, threaded rod 13 and support frame 5 are screw connection.
[0025] In specific implementation, the hydraulic pipe expanding machine capable of avoiding butt joint deviation only needs to place the pipe on the lower die seat 6 when the diameter of the pipe needs to be expanded, and then adjust the positions of the upper die seat 7 and the lower die seat 6 according to the middle position of the pipe and the pipe expanding die 4. When the horizontal position of the lower die seat 6 is adjusted, only the screw rod 10 needs to be rotated. Since the screw rod 10 is connected with the clamping block 11 through a bearing and is threadedly connected with the fixed block 9, the screw rod 10 will drive the clamping block 11 to move up and down when the screw rod 10 is rotated, affected by the guide rod at the top of the clamping block 11. When the clamping block 11 moves upward, the clamping block 11 will be separated from the rack 12 in the groove at the top of the operation table 1. Without the limiting action of the clamping block 11 and the rack 12, the second movable frame 8 can be pulled to slide horizontally along the operation table 1 through the sliding block. The movement of the second movable frame 8 will drive the support frame 5 at the top and the lower die seat 6 to slide, so that the horizontal position of the lower die seat 6 can be adjusted. Conversely, the screw rod 10 is reversely rotated, which will drive the clamping block 11 to butt joint with the rack 12 in the groove of the operation table 1, and then the position of the second movable frame 8 can be fixed.
[0026] When the longitudinal height of the lower die seat 6 needs to be adjusted, only the screw rod 10 needs to be rotated. Since the screw rod 10 is connected with the lower wedge block 14 through a bearing and is threadedly connected with the support frame 5, the screw rod 10 will drive the lower wedge block 14 to slide along the groove of the support frame 5 through the sliding block at the bottom of the lower wedge block 14 when the screw rod 10 is rotated. The lower wedge block 14 will extrude the upper wedge block 15 when it slides, and the top of the upper wedge block 15 is connected with the support frame 5. Therefore, the support frame 5 and the upper die seat 7 will move upward when the upper wedge block 15 is extruded by the lower wedge block 14. Meanwhile, the two groups of lower wedge blocks 14 are connected through connecting rods, so that the two sides of the support frame 5 will move upward synchronously. Conversely, when the lower wedge block 14 does not extrude the upper wedge block 15, the support frame 5 will drive the lower die seat 6 to move downward under the action of gravity, so that the longitudinal height of the lower die seat 6 can be adjusted.
[0027] As shown in Figures 1-4 It can be known that, in use, the screw rod 10 can be rotated to drive the clamping block 11 to separate from the rack 12, so that the horizontal position of the pipe can be adjusted. The threaded rod 13 can also be rotated to drive the support frame 5 to move through the lower wedge block 14 and the upper wedge block 15. After the center line of the pipe is aligned with the center line of the pipe expanding die 4, the pipe can be expanded, so that the butt joint deviation during pipe expansion can be avoided.
[0028] The bottom of the lower die seat 6 is provided with an insertion block 16, the two sides of the insertion block 16 are respectively provided with a limiting block 17, one side of the limiting block 17 away from the insertion block 16 is provided with a rotating block 18, the two groups of rotating blocks 18 are connected through a rotating shaft and are provided with a movable block 19, the middle of the two groups of movable blocks 19 is connected with a rotating shaft 20 penetrating through the support frame 5, one side of the rotating block 18 away from the insertion block 16 is provided with an extension block 21, the extension block 21 and the groove of the support frame 5 are connected with a movable spring 22, and the insertion block 16 is symmetrically provided with four groups about the center line of the lower die seat 6.
[0029] In specific implementation, the hydraulic pipe expanding machine capable of avoiding docking deviation can rotate the rotating shaft 20 on one side of the support frame 5 according to the size of the pipe in use, and the rotating shaft 20 rotates to drive the two groups of movable blocks 19 to rotate, because the two ends of the movable block 19 are long, the movable block 19 will extrude the rotating block 18 when rotating, and the bottom of the rotating block 18 is connected in the groove of the support frame 5 through the rotating shaft, so that the rotating block 18 is extruded by the movable block 19 and rotates through the rotating shaft, and the rotating block 18 rotates to drive the limiting block 17 on one side to rotate out of the groove on one side of the insertion block 16 and extrude the extension block 21 on one side of the rotating block 18, and at the same time, the extension block 21 makes the movable spring 22 in the groove of the support frame 5 in a compressed state;
[0030] Without the limiting action of the limiting block 17 on the insertion block 16, the insertion block 16 can be disassembled from the groove of the support frame 5, and then the replaced insertion block 16 at the bottom of the lower die seat 6 is inserted into the groove of the support frame 5, because one end of the limiting block 17 is a beveled structure, the insertion block 16 extrudes the limiting block 17 to make the limiting block 17 rotate to both sides through the rotating block 18, and at the same time, the extension block 21 extrudes the movable spring 22, when the insertion block 16 is completely inserted into the groove of the support frame 5, the grooves on both sides of the insertion block 16 are aligned with the limiting block 17, then the movable spring 22 pushes the rotating block 18 to rotate reversely through the extension block 21, at this time, the rotating block 18 rotates the limiting block 17 to be inserted into the groove of the insertion block 16, and the limiting action of the insertion block 16 and the limiting block 17 can quickly fix the lower die seat 6, and the above steps can be repeated to replace the upper die seat 7, and different sizes of pipes can be clamped and fixed by replacing the upper die seat 7 and the lower die seat 6, so as to meet the different use requirements of the user.
[0031] It can be seen from Figure 2 and Figure 5 that the upper die seat 7 and the lower die seat 6 can be disassembled from the support frame 5 according to the use requirements, so that different sizes of the upper die seat 7 and the lower die seat 6 can be replaced, and different sizes of pipes can be clamped and fixed.
[0032] In summary: the hydraulic pipe expander which can avoid butt offset, when in use, only need to put the pipe to be expanded on the lower die seat 6, and put the end of the pipe on the one side of the fixed plate on the operation table 1, then push the upper die seat 7 down through the cylinder, so that the upper die seat 7 and the lower die seat 6 fix the pipe, then start the hydraulic cylinder 2, the hydraulic cylinder 2 will push the first movable frame 3 to move through the fixing frame, so that the first movable frame 3 pushes the pipe expanding die 4 to move, push the pipe expanding die 4 to the inside of the pipe, at this time the pipe expanding die 4 can expand the diameter of the pipe, this is the use characteristics of the hydraulic pipe expander which can avoid butt offset, the contents which are not described in detail in the description belong to the prior art known to the person skilled in the art.
[0033] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A hydraulic pipe expander that avoids misalignment during docking, comprising: The operation platform (1) and the upper die holder (7), characterized in that: the top of the operation platform (1) is provided with a hydraulic cylinder (2) through a fixing frame, one side of the hydraulic cylinder (2) is connected with a first movable frame (3), one side of the first movable frame (3) is provided with a pipe expanding die (4), one side of the pipe expanding die (4) is provided with a supporting frame (5), the top of the supporting frame (5) is provided with a lower die holder (6), and the upper die holder (7) is installed at the bottom of the supporting frame (5) through a gas cylinder. The bottom of the supporting frame (5) is provided with a second movable frame (8), the bottom of the second movable frame (8) is provided with a sliding block, one side of the second movable frame (8) is provided with a fixed block (9), the middle of the fixed block (9) is penetrated and connected with a screw rod (10), the bottom of the screw rod (10) is provided with a clamping block (11), and the bottom of the clamping block (11) is connected with a rack (12) between the recess in the top of the operation platform (1).
2. The hydraulic pipe expander of claim 1, wherein: One side of the supporting frame (5) is penetrated and connected with a threaded rod (13).
3. The hydraulic pipe expander of claim 2, wherein: One side of the threaded rod (13) is connected with a lower wedge block (14) through a bearing, and the top of the lower wedge block (14) is provided with an upper wedge block (15) penetrating the second movable frame (8).
4. The hydraulic pipe expander of claim 1, wherein: The bottom of the lower die holder (6) is provided with an insertion block (16), and the two sides of the insertion block (16) are both inserted with a limiting block (17).
5. The hydraulic pipe expander of claim 4, wherein: The limiting block (17) is provided with a rotating block (18) away from the insertion block (16).
6. The hydraulic pipe expander of claim 5, wherein: Two groups of rotating blocks (18) are connected with movable blocks (19) through rotating shafts, and the middle of the two groups of movable blocks (19) is connected with a rotating shaft (20) penetrating the supporting frame (5).
7. The hydraulic pipe expander of claim 6, wherein: The rotating block (18) is provided with an expansion block (21) away from the insertion block (16), and the expansion block (21) is connected with a movable spring (22) between the recess in the supporting frame (5).