CN220329793U - Pipe end expanding machine for small steel pipe - Google Patents
Pipe end expanding machine for small steel pipe Download PDFInfo
- Publication number
- CN220329793U CN220329793U CN202322052070.9U CN202322052070U CN220329793U CN 220329793 U CN220329793 U CN 220329793U CN 202322052070 U CN202322052070 U CN 202322052070U CN 220329793 U CN220329793 U CN 220329793U
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- oil cylinder
- support frame
- expander
- expansion
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 24
- 239000010959 steel Substances 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 54
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a pipe end expanding machine of a small steel pipe, which comprises a base, a support frame, an expander and an oil cylinder, wherein the support frame is arranged on the base; the support frame is fixedly arranged at the top of the base, the oil cylinder is fixedly arranged at one side of the support frame, the expander is fixedly arranged at one side of the support frame away from the oil cylinder, and the oil cylinder is in transmission connection with the expander; the expander comprises an expansion head, an expansion block and a guide disc, wherein the guide disc is fixedly connected with the support frame, the expansion head is inserted into the expansion block, and the expansion head drives the expansion block to be connected with the guide disc in a sliding manner. The utility model has the advantages of small volume, low cost, no need of mechanical foundation, simple operation, convenient installation and maintenance, and the use of the expansion head with fixed size and the use of one expansion head can meet the requirements of two different expansion sizes.
Description
Technical Field
The utility model relates to the field of steel pipe expanding machines, in particular to a small-sized steel pipe end expanding machine.
Background
The expanding machine is used in shaping metal welded pipe and its principle is that it expands inside steel pipe with conic expanding head to eliminate the forming pressure and welding stress of the steel pipe and ensure the diameter of the welded steel pipe.
The expanding machine consists of a trolley, an expander, a working sleeve, a fixed seat, an oil cylinder, a lubrication station, a rack, a hydraulic station and an electric control system. The expander is arranged on the trolley and is connected to the oil cylinder by a working sleeve, and the expander consists of an expansion head, an expansion block, a guide disc, a pull rod and the like. The external shape sizing of the metal welded pipe is ensured by a sectional mechanical extrusion and expansion process, and the stress is eliminated.
The existing expanding machine is large-scale equipment, has high manufacturing cost, large occupied area, complicated installation, complex operation and troublesome maintenance, and needs multiple persons to cooperatively operate and maintain; the expansion head is heavy and complex to replace; the oil cylinders are numerous and are extremely easy to leak oil and damage; the diameter expansion size parameter is difficult to master.
Disclosure of Invention
The utility model aims to provide a small-sized pipe end expanding machine for steel pipes, which has the advantages of small volume, low manufacturing cost, no need of mechanical foundation, simple operation, convenient installation and maintenance, and the use of an expanding head with fixed size and the use of one expanding head to meet the requirements of two different expanding sizes.
The technical aim of the utility model is realized by the following technical scheme:
the pipe end expanding machine of the small-sized steel pipe comprises a base, a supporting frame, an expander and an oil cylinder;
the support frame is fixedly arranged at the top of the base, the oil cylinder is fixedly arranged at one side of the support frame, the expander is fixedly arranged at one side of the support frame away from the oil cylinder, and the oil cylinder is in transmission connection with the expander;
the expander comprises an expansion head, an expansion block and a guide disc, wherein the guide disc is fixedly connected with a support frame, the guide disc is circular, four groups of dovetail sliding groove groups penetrating through the circle center of the guide disc and the outer side wall of the guide disc are arranged on the circumference array of one side of the guide disc far away from the support frame, the angle between every two groups of dovetail sliding grooves is 90 degrees, each group of dovetail sliding groove groups comprises three dovetail sliding grooves which are parallel to each other, and each dovetail sliding groove is internally provided with a dovetail sliding block;
a first round perforation is formed in the circle center of the guide disc;
the expansion block is in a circular block shape, a second circular through hole is formed in the circle center of the expansion block, the diameter of one side of the second circular through hole, which is close to the guide disc, is one half of the diameter of one side, which is far away from the guide disc, of the second circular through hole, the vertical section of the outer side wall of the expansion block is in a step shape, the expansion block is equally divided into four fan-shaped blocks with a central angle of 90 degrees, and the four fan-shaped blocks are respectively and fixedly connected with dovetail sliding blocks in four dovetail sliding groove groups;
the expansion head is in a round table shape, the expansion head is inserted into the second round through hole of the expansion block, and the expansion head is fixedly connected with a piston rod of the oil cylinder.
The preferred scheme is as follows:
preferably: a connecting plate is arranged between the guide plate and the support frame, the connecting plate is fixedly connected with the support frame, and the connecting plate is connected with the guide plate flange.
Preferably: the third round through hole is formed in the support frame, and a piston rod of the oil cylinder is located in the third round through hole.
Preferably: and a guide cylinder of an oil cylinder piston rod is arranged in the third round perforation.
Preferably: the diameter of one side of the third round perforation, which is close to the oil cylinder, is 1.2 times of the diameter of the piston rod of the oil cylinder, the diameter of one side of the third round perforation, which is close to the expander, is consistent with the diameter of the middle part of the expander, the guide cylinder comprises a limiting cylinder and a yielding cylinder, the limiting cylinder is fixedly connected with the yielding cylinder, the limiting cylinder is positioned at one side, which is close to the oil cylinder, of the inside of the support frame, and the yielding cylinder is positioned at one side, which is close to the expander, of the inside of the support frame.
Preferably: the cylinder piston rod is inserted in the limiting cylinder in a clearance fit manner, the yielding cylinder is a hollow cylinder with an opening at one side close to the expander, and a fourth round perforation is formed at one side of the yielding cylinder close to the limiting cylinder.
In summary, the utility model has the following beneficial effects:
1. the four sector blocks of the expansion block can displace towards the outer side wall of the guide disc through the guide disc by arranging the expansion block and the guide disc;
2. the vertical section of the outer side wall of the expansion block is arranged in a step shape, so that the effect of expanding the steel pipes with different diameters can be achieved;
3. through the setting of spacing section of thick bamboo and the section of thick bamboo of stepping down, can play both made things convenient for spacing section of thick bamboo and the section of thick bamboo processing of stepping down, played the effect that does not hinder the work of expansion head again.
Drawings
FIG. 1 is a partial cross-sectional view of a side view of an embodiment;
fig. 2 is a front view of an expansion block and guide disc of an embodiment.
In the figure, 1, a base; 2. a support frame; 3. an expander; 4. an oil cylinder; 5. a connecting plate; 6. a guide cylinder; 7. an annular clamping plate; 8. a hoop; 9. a guide rod; 10. a spring; 11. a rubber pad; 311. an expansion head; 312. expanding the block; 313. a guide disc; 314. dovetail slide blocks; 611. a limiting cylinder; 612. and (5) a yielding cylinder.
Detailed Description
The present utility model will be described in further detail below with reference to the drawings, wherein like parts are designated by like reference numerals.
A pipe end expanding machine of a small steel pipe, as shown in figures 1-2;
comprises a base 1, a support frame 2, an expander 3 and an oil cylinder 4;
the support frame 2 is fixedly arranged at the top of the base 1, the oil cylinder 4 is fixedly arranged at one side of the support frame 2, the expander 3 is fixedly arranged at one side of the support frame 2 far away from the oil cylinder 4, and the oil cylinder 4 is in transmission connection with the expander 3;
the expander 3 comprises an expanding head 311, an expanding block 312 and a guide disc 313, the guide disc 313 is fixedly connected with the support frame 2, a connecting plate 5 is arranged between the guide disc 313 and the support frame 2, the connecting plate 5 is welded with the support frame 2, the effect of sufficient fixation can be achieved, the guide disc 313 and the connecting plate 5 are circular, the guide disc 313 is in flange connection with the connecting plate 5, the guide disc 313 can be conveniently disassembled, the guide disc 313 with other dimensions is replaced, four groups of dovetail sliding groove groups penetrating through the circle center of the guide disc 313 and the outer side wall of the guide disc 313 are arranged on the circumference array of one side of the guide disc 313 far away from the support frame 2, the angle between every two groups of dovetail sliding grooves is 90 degrees, each group of dovetail sliding groove groups comprises three dovetail sliding grooves which are parallel to each other, and each dovetail sliding groove is internally provided with a dovetail sliding block 314;
the expanding block 312 is in a circular block shape, a second circular through hole is formed in the circle center of the expanding block 312, the diameter of one side of the second circular through hole, which is close to the guide disc 313, is one half of the diameter of one side, which is far away from the guide disc 313, of the second circular through hole, the vertical section of the outer side wall of the expanding block 312 is in a step shape, the expanding block 312 is averagely divided into four fan-shaped blocks with a central angle of 90 degrees, and the four fan-shaped blocks are respectively fixedly connected with dovetail sliding blocks 314 in four dovetail sliding groove groups;
the expansion head 311 is in a truncated cone shape, the expansion head 311 is inserted into the second circular through hole of the expansion block 312, and the expansion head 311 is inserted into the second circular through hole of the expansion block 312 in a clearance fit manner;
the center of the guide disc 313 is provided with a first round perforation, the support frame 2 is provided with a third round perforation, and the connecting plate 5 is provided with a fifth round perforation;
the piston rod of the oil cylinder 4 passes through the third round perforation of the support frame 2, the first round perforation of the guide disc 313, the fifth round perforation of the connecting plate 5 and the second round perforation of the expansion block 312 to be fixedly connected with the expansion head 311, in order to conveniently fix the expansion head 311, a sixth round perforation is formed along the central axis of the expansion head 311, the piston rod of the oil cylinder 4 passes through the sixth round perforation, one end of the piston rod of the oil cylinder 4, which is close to the expansion head 311, is provided with threads, two nuts are in threaded connection at the thread, in order to conveniently fix the expansion head 311, the diameter of the sixth round perforation is five sixths of the diameter of the piston rod of the oil cylinder 4, and the diameter of the part of the piston rod of the oil cylinder 4, which is positioned in the expansion head 311, is consistent with the diameter of the sixth round perforation, so that a step shape is formed at the piston rod of the oil cylinder 4, one end, which is small in diameter, of the expansion head 311 is abutted against the step of the piston rod of the oil cylinder 4, is fixed by the nuts, and the expansion head 311 can be fully fixed.
A guide cylinder 6 of a piston rod of the oil cylinder 4 is arranged in the third circular perforation of the support frame 2, the guide cylinder 6 comprises a limiting cylinder 611 and a yielding cylinder 612, the limiting cylinder 611 is fixedly arranged on one side, close to the oil cylinder 4, of the interior of the support frame 2, the limiting cylinder 611 is used for limiting the piston rod of the oil cylinder 4, the yielding cylinder 612 is arranged on one side, close to the expander 3, of the interior of the support frame 2, and the yielding cylinder 612 supports the limiting cylinder 611 and also reserves a working space of the expansion head 311.
The diameter of one side of the third round perforation close to the oil cylinder 4 is 1.2 times of the diameter of the piston rod of the oil cylinder 4, so that the outer diameter of the limiting cylinder 611 is consistent with the diameter of one side of the third round perforation close to the oil cylinder 4, the inner diameter of the limiting cylinder 611 is larger than the diameter of the piston rod of the oil cylinder 4 by 1-3mm, the piston rod of the oil cylinder 4 is in clearance fit with the limiting cylinder 611, in order to better fix the piston rod of the oil cylinder 4, the piston rod of the oil cylinder 4 is prevented from shaking in the limiting cylinder 611 due to the clearance fit, a cylindrical groove is formed in the limiting cylinder 611, the cylindrical groove penetrates through one side of the limiting cylinder 611 close to the yielding cylinder 612, an annular rubber gasket 11 is placed in the cylindrical groove, the diameter of the annular rubber gasket 11 is smaller than the diameter of the piston rod of the oil cylinder 4 by 1-3mm, the piston rod of the oil cylinder 4 can be tightly pressed, and meanwhile, the piston rod of the oil cylinder 4 can move in the rubber gasket 11 due to the fact that lubricating oil is smeared on the piston rod of the oil cylinder 4, the piston rod of the oil cylinder 4 is fixed, and the piston rod of the oil cylinder 4 is not hindered from working.
The diameter of the third round perforation near the expander 3 is consistent with the diameter of the middle part of the expansion head 311, the yielding cylinder 612 is a hollow cylinder with an opening near the expander 3, the outer diameter of the yielding cylinder 612 is consistent with the diameters of the first round perforation and the fifth round perforation, the yielding cylinder 612 is fixedly inserted into the connecting plate 5, a clamping groove is formed in the fifth round perforation of the connecting plate 5 near one side of the guide plate 313, an annular clamping plate 7 is arranged in the clamping groove, the inner diameter of the annular clamping plate 7 is consistent with the diameter of a piston rod of the oil cylinder 4, one side of the annular clamping plate 7 near the yielding cylinder 612 is propped against the yielding cylinder 612, and the effect of fixing the yielding cylinder 612 is achieved.
A fourth round through hole is formed in one side, close to the limiting cylinder 611, of the yielding cylinder 612, the diameter of the fourth round through hole is consistent with the inner diameter of a piston rod of the oil cylinder 4, and the yielding cylinder 612 and the limiting cylinder 611 are fixed in a flange connection mode.
In order to facilitate homing of the four sector blocks, a circle of anchor ear 8 is arranged on the outer side of the guide disc 313, seventh round through holes are formed in each dovetail sliding block 314, guide rods 9 are arranged on the anchor ear 8 to penetrate through the corresponding seventh round through holes, and springs 10 are sleeved on each guide rod 9.
The specific implementation process comprises the following steps:
s1, placing an annular rubber gasket 11 in a cylindrical groove of a limiting cylinder 611, smearing lubricating oil on a side wall corresponding to the inner diameter of the annular rubber gasket 11, connecting a yielding cylinder 612 with the limiting cylinder 611 in a flange manner, and placing a guide cylinder 6 which is well connected and fixed in the supporting frame 2 through a fifth round perforation of a connecting plate 5 of the supporting frame 2;
s2, fixing the oil cylinder 4 on one side of the support frame 2 far away from the connecting plate 5, enabling a piston rod of the oil cylinder 4 to pass through the limiting cylinder 611 and the yielding cylinder 612, and enabling one end with threads of the piston rod of the oil cylinder 4 to protrude out of one side of the connecting plate 5 far away from the support frame 2;
s3, an annular clamping plate 7 is placed in a clamping groove of the connecting plate 5, the annular clamping plate 7 is propped against the abdication cylinder 612, and the limiting cylinder 611 and the abdication cylinder 612 are fixed through the oil cylinder 4 and the annular clamping plate 7;
s4, the connecting plate 5 is in flange connection with a guide plate 313, and the first circular perforation of the guide plate 313 is consistent with the fifth circular perforation of the connecting plate 5 in diameter, so that the annular clamping plate 7 is tightly fixed by the guide plate 313;
s5, dovetail sliding blocks 314 are placed in each dovetail sliding groove of the guide disc 313, and the four sector blocks are respectively and fixedly connected with the three corresponding dovetail sliding blocks 314;
s6, inserting the end with the small diameter of the expansion head 311 into a piston rod of the oil cylinder 4, wherein the end with the small diameter of the expansion head 311 is propped against a step of the piston rod of the oil cylinder 4, and the expansion head 311 and the piston rod of the oil cylinder 4 are fixedly connected through a screw thread at a screw thread of the piston rod of the oil cylinder 4 by a nut, so that the expansion head 311 can be fully fixed;
s7, inserting a steel pipe into a step of the expansion block 312, wherein a piston rod of the oil cylinder 4 is contracted, the expansion head 311 is in a truncated cone shape, and a cross section of a second round perforation of the expansion block 312 is trapezoidal, and the expansion head 311 is in clearance fit and plug connection with the second round perforation of the expansion block 312, so that the expansion head 311 drives four sector blocks of the expansion block 312 to move, and the four sector blocks move stably because dovetail grooves in each dovetail groove group are flush with each other;
s8, after the diameter of the steel pipe is expanded, the piston rod of the oil cylinder 4 stretches, each dovetail sliding block 314 rebounds under the action of the spring 10, and at the moment, the steel pipe is taken down;
s9, replacing a steel pipe with another size, inserting the steel pipe into the step of the expansion block 312 corresponding to the steel pipe, and repeating the operations S7-S8.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.
Claims (6)
1. The pipe end expanding machine of small-size steel pipe, its characterized in that: comprises a base (1), a supporting frame (2), an expander (3) and an oil cylinder (4);
the support frame (2) is fixedly arranged at the top of the base (1), the oil cylinder (4) is fixedly arranged at one side of the support frame (2), the expander (3) is fixedly arranged at one side of the support frame (2) away from the oil cylinder (4), and the oil cylinder (4) is in transmission connection with the expander (3);
the expander (3) comprises an expansion head (311), an expansion block (312) and a guide disc (313), the guide disc (313) is fixedly connected with the support frame (2), the guide disc (313) is circular, one side of the guide disc (313) far away from the support frame (2) is circumferentially arrayed with four groups of dovetail sliding groove groups penetrating through the circle center of the guide disc (313) and the outer side wall of the guide disc (313), the angle between every two groups of dovetail sliding grooves is 90 degrees, each group of dovetail sliding groove groups comprises three dovetail sliding grooves which are parallel to each other, and each dovetail sliding groove is internally provided with a dovetail sliding block (314);
a first round perforation is formed in the center of the guide disc (313);
the expansion block (312) is in a round block shape, a second round perforation is formed in the circle center of the expansion block (312), the diameter of one side of the second round perforation, which is close to the guide disc (313), is one half of the diameter of one side, which is far away from the guide disc (313), of the second round perforation, the vertical section of the outer side wall of the expansion block (312) is in a step shape, the expansion block (312) is equally divided into four fan-shaped blocks with 90-degree central angles, and the four fan-shaped blocks are respectively and fixedly connected with dovetail sliding blocks (314) in four groups of dovetail sliding groove groups;
the expansion head (311) is in a round table shape, the expansion head (311) is inserted into a second round through hole of the expansion block (312), and the expansion head (311) is fixedly connected with a piston rod of the oil cylinder (4).
2. A small-sized steel pipe end expanding machine according to claim 1, wherein: a connecting plate (5) is arranged between the guide plate (313) and the support frame (2), the connecting plate (5) is fixedly connected with the support frame (2), and the connecting plate (5) is in flange connection with the guide plate (313).
3. A small-sized steel pipe end expanding machine according to claim 1, wherein: the support frame (2) is provided with a third round perforation, and a piston rod of the oil cylinder (4) is positioned in the third round perforation.
4. A small-sized steel pipe end expanding machine according to claim 3, wherein: a guide cylinder (6) of a piston rod of the oil cylinder (4) is arranged in the third round perforation.
5. A small-sized steel pipe end expanding machine according to claim 4, wherein: the diameter of one side of the third round perforation, which is close to the oil cylinder (4), is 1.2 times of the diameter of the piston rod of the oil cylinder (4), the diameter of one side of the third round perforation, which is close to the expander (3), is consistent with the diameter of the middle part of the expansion head (311), the guide cylinder (6) comprises a limiting cylinder (611) and a yielding cylinder (612), the limiting cylinder (611) is fixedly connected with the yielding cylinder (612), the limiting cylinder (611) is positioned at one side, which is close to the oil cylinder (4), inside the support frame (2), and the yielding cylinder (612) is positioned at one side, which is close to the expander (3), inside the support frame (2).
6. A small-sized steel pipe end expanding machine according to claim 5, wherein: the piston rod of the oil cylinder (4) is inserted in the limiting cylinder (611) in a clearance fit manner, the yielding cylinder (612) is a hollow cylinder with an opening at one side close to the expander (3), and a fourth round perforation is formed at one side of the yielding cylinder (612) close to the limiting cylinder (611).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322052070.9U CN220329793U (en) | 2023-08-01 | 2023-08-01 | Pipe end expanding machine for small steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322052070.9U CN220329793U (en) | 2023-08-01 | 2023-08-01 | Pipe end expanding machine for small steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220329793U true CN220329793U (en) | 2024-01-12 |
Family
ID=89456465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322052070.9U Active CN220329793U (en) | 2023-08-01 | 2023-08-01 | Pipe end expanding machine for small steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220329793U (en) |
-
2023
- 2023-08-01 CN CN202322052070.9U patent/CN220329793U/en active Active
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