CN216859514U - Clamping device for steel pipe hydrostatic testing machine mould - Google Patents
Clamping device for steel pipe hydrostatic testing machine mould Download PDFInfo
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- CN216859514U CN216859514U CN202220581577.6U CN202220581577U CN216859514U CN 216859514 U CN216859514 U CN 216859514U CN 202220581577 U CN202220581577 U CN 202220581577U CN 216859514 U CN216859514 U CN 216859514U
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- steel pipe
- clamping device
- nut sleeve
- testing machine
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Abstract
The utility model relates to the technical field of subsequent pipe processing finishing lines for steel pipe manufacturing, and discloses a clamping device for a steel pipe hydrostatic testing machine die, which comprises a cross frame, wherein the cross frame comprises a cylinder with a through hole and a rectangular block, the left end and the right end of the rectangular block are symmetrically provided with two threaded through holes for assembling positioning screws, the middle part of the cross frame is symmetrically provided with two rectangular through holes for installing clamping hooks, the center of the cross frame is provided with a through hole with a counter bore for positioning an inner nut sleeve and an outer nut sleeve, the upper parts of the inner nut sleeve and the outer nut sleeve are provided with hand wheels, the lower parts of the inner nut sleeve and the outer nut sleeve are provided with hinged lead screws, the lower end parts of the clamping hooks are connected with connecting rods, and the connecting rods comprise left connecting rods and right connecting rods. The clamping device has the advantages of simple structure, convenience in disassembly and assembly, adjustability in the same structure, capability of meeting the clamping use of dies with multiple specifications and the like; the device can greatly shorten the replacement time of the tool and improve the production efficiency of a production line.
Description
Technical Field
The utility model relates to the technical field of subsequent pipe processing finishing lines for steel pipe manufacturing, in particular to a clamping device for a steel pipe hydrostatic testing machine die, which is used by steel pipe hydrostatic testing equipment.
Background
The steel pipe hydrostatic testing machine is mainly used for testing the compressive strength and the tightness of the steel pipe. In the test process, whether the steel pipe has the pressure bearing capacity necessary for safe operation under the design pressure or not is verified by observing whether the steel pipe has obvious deformation or rupture.
The water filling and exhausting mold is used as a main component of the steel pipe hydrostatic testing machine, and the water filling and exhausting mold with different specifications needs to be replaced when the steel pipes with different specifications are tested. Due to the fact that the size precision error of the mold machining and manufacturing or the new large-gap sealing ring replaced in the mold is hard, the situation that the assembly is not in place easily occurs, the water filling mold and the exhaust mold cannot be replaced quickly, and the crane is lifted frequently, so that the energy consumption is increased, and the production efficiency of a production line is delayed.
SUMMERY OF THE UTILITY MODEL
Aiming at the problem of inconvenient assembly of water filling and exhausting molds in the prior art, the utility model aims to provide a clamping device for a steel pipe hydrostatic testing machine mold.
In order to realize the purpose, the utility model adopts the following technical scheme:
the utility model provides a steel pipe hydrostatic testing machine fills clamping device for exhaust mould that waters, includes the crossbearer, the crossbearer includes a cylinder and a rectangular block of taking the through-hole, and the tip symmetric distribution has two screw thread through-holes about the rectangular block for the positioning screw, and the crossbearer middle part symmetric distribution has two rectangular through-holes, is used for packing into the clamp hook, and open at the crossbearer center has a through-hole of taking the counter bore, is used for fixing a position interior nut cover, interior nut cover upper portion installs the hand wheel, and articulated lead screw is installed to the lower part, the tip is connected with the connecting rod under the clamp hook, the connecting rod includes left connecting rod and right connecting rod.
Preferably, the upper end parts of the inner nut sleeve and the outer nut sleeve are provided with external threads, the bottom of the external threads is provided with an annular groove, and the outer diameter of the upper part of the annular groove is smaller than that of the lower part of the annular groove so as to position the installation position of the hand wheel; the lower end parts of the inner nut sleeve and the outer nut sleeve are provided with an annular boss which is used for being matched and positioned with a counter bore on the cross frame; internal threads are arranged inside the inner nut sleeve and the outer nut sleeve and are used for being matched with the hinged screw rod.
Preferably, the upper end part of the clamping hook is of a rectangular structure and is matched with rectangular through holes symmetrically distributed in the middle of the cross frame to limit the axial displacement of the clamping hook on the hinged screw rod; the lower end part of the clamping hook is upwards provided with a circular through hole for assembling a connecting rod; the lower end part of the clamping hook is provided with a special-shaped bulge which is used for being matched and positioned with the semicircular groove in the die core.
Preferably, the circular through hole has a semi-cylindrical convex surface.
Preferably, the upper half part of the hinged screw rod is a full-thread external thread, the lower half part of the hinged screw rod is a cylinder, the diameter of the cylinder of the lower half part is larger than that of the external thread part of the upper half part, and the lower end part of the hinged screw rod adopts a fork pin structure.
Preferably, the left end and the right end of the left connecting rod are of fork pin structures, and a fork pin at the right end of the left connecting rod is matched with a fork pin of the hinged screw rod.
Preferably, the left end of the right connecting rod is a pin hole end, the right end of the right connecting rod is a fork pin structure, and the left end of the right connecting rod is matched with a fork pin of the hinge screw rod.
Preferably, the hinged screw rod, the left connecting rod and the right connecting rod are connected in a positioning mode through a pin shaft with a hole and a cotter pin.
Preferably, the locking nut is installed into the fixed hand wheel from the external thread on the upper parts of the inner nut sleeve and the outer nut sleeve.
Preferably, the cross frame is a welding piece, and the cylinder with the through hole and the rectangular block are welded into a whole.
According to the utility model, by utilizing a matching structure of the screw rod and the connecting rod, the screw rod is driven to rotate by the hand wheel so that the clamping hook is fixed in the mold core groove, and the positioning screw on the adjusting cross frame enables the clamping hook to drive the mold core to generate axial displacement to compress the large-gap sealing ring, so that the effect of meeting the assembly requirement is finally achieved.
The use method of the clamping device for the water filling and exhausting die of the steel pipe hydrostatic testing machine comprises the following steps:
1) after the large-gap sealing ring and the mold core in the mold are replaced, the mold is reversely buckled on the working table surface, and a positioning screw of the clamping device is aligned with a tool hole in the end face of the mold sleeve to be positioned;
2) after the positioning is finished, the hand wheel is rotated until the clamping hooks on the two sides are all pushed to the inner wall of the semicircular groove of the mold core;
3) after the clamping hook is determined to hook the mold core, positioning screws on two sides of a cross frame of the clamping device are rotated, so that the clamping hook drives the mold core to compact the large-gap sealing ring;
4) after the mold core is determined to compact the large-gap sealing ring, the mold is rotated by 90 degrees, and whether the mold core and the left end face of the mold sleeve are on the same horizontal plane or not is checked;
5) after the assembly is confirmed to be correct, the die is firstly hung in a groove formed by assembling the water filling head seat and the lower half sleeve, then the die is connected and arranged in the upper half sleeve through a bolt, after the assembly is finished, the hand wheel is rotated in the opposite direction, the clamping device is taken out, and the tool is completely replaced.
Compared with the prior art, the clamping device has the advantages of simple structure, convenience in disassembly and assembly, adjustability of the same structure, capability of meeting the clamping use of molds with multiple specifications and the like; by using the device provided by the utility model, the tool replacement time can be greatly shortened, and the production efficiency of a production line is improved.
Drawings
Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a front view of the overall construction of the present invention;
FIG. 2 is a sectional view in the direction A-A of the overall structure of the present invention;
FIG. 3 is a sectional view in the direction B-B of the overall structure of the present invention;
FIG. 4 is a top plan view of the overall structure of the present invention;
FIG. 5 is a schematic view of the clamp of the present invention 1;
figure 6 is a schematic view of the clamping of the present invention 2.
In the figure: 1. the device comprises a positioning screw, 2 locking nuts, 3 hand wheels, 4 inner and outer nut sleeves, 5 cross frames, 6 clamping hooks, 7 hinged screw rods, 8 left connecting rods, 9 perforated pin shafts, 10 split pins, 11 right connecting rods, 12 upper half sleeves, 13 water filling head bases, 14 mold cores, 15 large-gap sealing rings, 16 clamping devices, 17 mold sleeves and 18 lower half sleeves.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the utility model. All falling within the scope of the present invention.
Referring to fig. 1, the clamping device for the water filling and air exhausting mold of the steel pipe hydrostatic testing machine comprises a positioning screw 1, a locking nut 2, a hand wheel 3, an inner nut sleeve and an outer nut sleeve 4, a cross frame 5, a clamping hook 6, a hinged screw rod 7, a left connecting rod 8, a pin shaft 9 with a hole, a split pin 10 and a right connecting rod 11.
The transverse frame 5 is a welding part and consists of a cylinder with a through hole and a rectangular block, and the left end part and the right end part of the rectangular block are symmetrically provided with two threaded through holes for assembling the positioning screws 1; two rectangular through holes are symmetrically distributed in the middle of the transverse frame and used for limiting the axial position of the clamping hook 6 on the hinged screw rod 7; the center of the transverse frame is provided with a through hole with a counter bore for positioning the inner nut sleeve 4 and the outer nut sleeve 4.
The upper end parts of the inner nut sleeve and the outer nut sleeve 4 are provided with external threads, the bottom of the external threads is provided with an annular groove, and the outer diameter of the upper part of the annular groove is smaller than that of the lower part of the annular groove so as to position the installation position of the hand wheel 3; the lower end parts of the inner nut sleeve and the outer nut sleeve 4 are provided with an annular boss which is used for matching and positioning with a counter bore on the cross frame 5; the inner and outer nut sleeves 4 are internally provided with internal threads which are matched with the hinged screw rod 7;
the upper end part of the clamping hook 6 is of a rectangular structure and is matched with rectangular through holes symmetrically distributed in the middle of the cross frame to limit the axial displacement of the clamping hook on the hinged screw rod; the lower end part of the clamping hook is upwards provided with a circular through hole for assembling the connecting rod; the circular through hole is provided with a semi-cylindrical convex surface, so that the strength of the clamping hook is ensured; the lower end part of the clamping hook is provided with a special-shaped bulge which is used for being matched and positioned with the semicircular groove in the die core;
the upper half part of the hinged screw rod is provided with a full-thread external thread, the lower half part of the hinged screw rod is provided with a cylinder, the diameter of the cylinder of the lower half part is larger than that of the external thread part of the upper half part, the lower end part of the hinged screw rod adopts a fork pin structure, and referring to fig. 1-3, the fork pin structure is in a form that two lug plates are symmetrically distributed at the lower end part and is used for being connected with the left connecting rod and the right connecting rod through a pin shaft.
The left end and the right end of the left connecting rod 8 are of fork pin structures, the depth of a separating groove of the fork pin part at the left end is related to the movable radius of the connecting rod, clamping devices of different specifications have different groove depths, and the strength of the connecting rod is guaranteed on the premise that a clamping hook does not interfere with the movement of the connecting rod. And a fork pin at the right end of the left connecting rod is matched with a fork pin of the hinged screw rod.
The left end of the right connecting rod 11 is a pin hole end, the right end of the right connecting rod is of a fork pin structure, the slotting depth of the right end is related to the moving radius of the connecting rod, the slotting depth of clamping devices of different specifications is different, and the strength of the connecting rod is guaranteed on the premise that the clamping hook does not interfere with the movement of the connecting rod. And the left end of the right connecting rod is matched with the hinge screw rod fork pin.
The hinged screw rod, the left connecting rod and the right connecting rod are positioned and connected by a pin shaft 9 with a hole and a cotter pin 10, refer to fig. 1-2.
The mould comprises a mould core 14, a large-gap sealing ring 15 and a mould sleeve 17.
The process of replacing the tool comprises the following steps: removing the upper half sleeve 12 → hanging the die out and placing on the table surface, removing the die core and the large-gap sealing ring, replacing the large-gap sealing ring and the die core with required specifications → utilizing the clamping device 16 to enable the die core to compress the large-gap sealing ring, ensuring that the left end surface of the die core and the left end surface of the die sleeve are in the same horizontal plane → hanging the die into the semicircular groove of the lower half sleeve 18 → installing the upper half sleeve → dismantling the clamping device, and completing the tool replacing work.
The assembly process of the clamping device comprises the following steps: assembling two positioning screws of the clamping device to corresponding positions of the cross frame → inserting the inner nut sleeve and the outer nut sleeve into a through hole in the middle of the cross frame from the lower end surface of the cross frame → installing a hand wheel from the upper external thread of the inner nut sleeve and the outer nut sleeve till the lower end surface of the annular groove → installing a locking nut 2 into a fixed hand wheel from the upper external thread of the inner nut sleeve and the outer nut sleeve → installing a hinged screw rod from the lower end part of the internal thread of the inner nut sleeve and the outer nut sleeve → installing a clamping hook from the rectangular through hole on the upper end surface of the cross frame → connecting a left connecting rod and a right connecting rod with the hinged screw rod through a pin shaft with a hole and a split pin → repeatedly rotating the hand wheel till the clamping device can move smoothly.
In the process of working, referring to fig. 5 and 6, after a large-gap sealing ring in the mold is replaced and the mold core is replaced, the mold is reversely buckled on the working table surface, and at the moment, a positioning screw of the clamping device is aligned with a tool hole in the end face of the mold sleeve to be positioned, so that the clamping device is prevented from moving during working. After the positioning is finished, the hand wheel is rotated until the clamping hooks on the two sides are all pushed to the inner wall of the semicircular groove of the mold core. After the clamping hook is confirmed to hook the mold core, positioning screws on two sides of the cross frame of the clamping device are properly rotated, so that the clamping hook drives the mold core to compact the large-gap sealing ring. After the mold core is determined to compact the large-gap sealing ring, the mold is rotated by 90 degrees, whether the mold core and the left end face of the mold sleeve are on the same horizontal plane or not is checked, and if the left end face of the mold core is still higher than the left end face of the mold sleeve, the positioning screw needs to be rotated continuously, and the position of the mold core is adjusted.
After the assembly is confirmed to be correct, the mold is firstly hoisted into a groove formed by assembling the water filling head seat 13 and the lower half sleeve, the upper half sleeve is then installed in the groove through bolt connection, after the assembly is finished, the hand wheel of the clamping device is rotated in the opposite direction, the clamping device is taken out, and the tool is completely replaced.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model.
Claims (9)
1. The utility model provides a steel pipe hydrostatic testing machine fills clamping device for exhaust mould, its characterized in that, includes the crossbearer, the crossbearer includes a cylinder and a rectangular block of taking the through-hole, and the tip symmetric distribution has two screw thread through-holes about the rectangular block for the assembly set screw, and the crossbearer middle part symmetric distribution has two rectangular through-holes, is used for packing into the clip hook, and open at the crossbearer center has a through-hole of taking the counter bore, is used for fixing a position inside and outside nut cover, the hand wheel is installed on inside and outside nut cover upper portion, and articulated lead screw is installed to the lower part, the tip is connected with the connecting rod under the clip hook, the connecting rod includes left connecting rod and right connecting rod.
2. The clamping device for the water filling and air exhausting mold of the steel pipe hydrostatic testing machine as recited in claim 1, wherein the upper end of the inner nut sleeve and the outer nut sleeve are provided with external threads, the bottom of the external threads is provided with an annular groove, and the outer diameter of the upper part of the annular groove is smaller than that of the lower part of the annular groove for positioning the installation position of the hand wheel; the lower end parts of the inner nut sleeve and the outer nut sleeve are provided with an annular boss which is used for being matched and positioned with a counter bore on the cross frame; internal threads are arranged inside the inner nut sleeve and the outer nut sleeve and are used for being matched with the hinged screw rod.
3. The clamping device for the water filling and air exhausting mold of the steel pipe hydrostatic testing machine according to claim 1, wherein the upper end of the clamping hook is of a rectangular structure and is matched with rectangular through holes symmetrically distributed in the middle of the cross frame to limit axial displacement of the clamping hook on the hinged screw rod; the lower end part of the clamping hook is upwards provided with a circular through hole for assembling a connecting rod; the lower end part of the clamping hook is provided with a special-shaped bulge which is used for being matched and positioned with the semicircular groove in the die core.
4. The clamping device for the water filling and air exhausting mold of the steel pipe hydrostatic testing machine according to claim 3, wherein a semi-cylindrical convex surface is arranged at the circular through hole.
5. The clamping device for the water filling and air exhausting mold of the steel pipe hydrostatic testing machine as recited in claim 1, wherein the upper half portion of the hinge screw rod is provided with a full thread external thread, the lower half portion is provided with a cylinder, the diameter of the cylinder of the lower half portion is larger than that of the external thread portion of the upper half portion, and the lower end portion of the hinge screw rod is provided with a cross pin structure.
6. The clamping device for the water filling and air exhausting mold of the steel pipe hydrostatic testing machine according to claim 5, wherein the left end and the right end of the left connecting rod are of fork pin structures, and a fork pin at the right end of the left connecting rod is matched with a fork pin of the hinge screw rod.
7. The clamping device for the water filling and air exhausting mold of the steel pipe hydrostatic testing machine according to claim 5, wherein the left end of the right connecting rod is a pin hole end, the right end of the right connecting rod is a fork pin structure, and the left end of the right connecting rod is matched with a fork pin of the hinge screw rod.
8. The clamping device for the water filling and air exhausting mold of the steel pipe hydrostatic testing machine according to claim 1, wherein the hinged screw rod, the left connecting rod and the right connecting rod are connected in a positioning manner through a pin shaft with a hole and a cotter pin.
9. The clamping device for the water filling and air exhausting mold of the steel pipe hydrostatic testing machine as recited in claim 1, wherein the locking nut is provided with a fixed hand wheel from the upper external thread of the inner and outer nut sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220581577.6U CN216859514U (en) | 2022-03-17 | 2022-03-17 | Clamping device for steel pipe hydrostatic testing machine mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220581577.6U CN216859514U (en) | 2022-03-17 | 2022-03-17 | Clamping device for steel pipe hydrostatic testing machine mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216859514U true CN216859514U (en) | 2022-07-01 |
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ID=82124103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220581577.6U Active CN216859514U (en) | 2022-03-17 | 2022-03-17 | Clamping device for steel pipe hydrostatic testing machine mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216859514U (en) |
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- 2022-03-17 CN CN202220581577.6U patent/CN216859514U/en active Active
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