CN219842261U - Mandrel axial dynamic stiffness testing device - Google Patents
Mandrel axial dynamic stiffness testing device Download PDFInfo
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- CN219842261U CN219842261U CN202320839146.XU CN202320839146U CN219842261U CN 219842261 U CN219842261 U CN 219842261U CN 202320839146 U CN202320839146 U CN 202320839146U CN 219842261 U CN219842261 U CN 219842261U
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- rod
- mounting plate
- mandrel
- lifting
- dynamic stiffness
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000003068 static effect Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of mandrel performance testing equipment, and particularly discloses a mandrel axial dynamic stiffness testing device which comprises a base and a portal frame arranged at the top of the base; the top of the base is provided with a clamping mechanism arranged on the portal frame; a movable rod is arranged between vertical rods of the portal frame, a lifting mechanism for adjusting the lifting of the movable rod is arranged in the vertical rods, a mounting plate is arranged at the bottom of the movable rod, and the bottom of the mounting plate is connected with a detachable pressing plate; the bottom of the movable rod is connected with a rotating seat, the top of the mounting plate is connected with a rotating block in rotating fit with the rotating seat, the two sides of the top of the mounting plate are hinged with telescopic rods, and one end, far away from the mounting plate, of each telescopic rod is hinged with the movable rod; according to the utility model, the mounting plate is movably connected to the bottom of the movable rod, the inclination of the mounting plate can be adjusted through the telescopic rod, and when the rigidity test is carried out, the angle of the mounting plate can be adjusted, so that the mandrel can carry out the multi-position rigidity test, and meanwhile, the rigidity test is convenient.
Description
Technical Field
The utility model relates to the technical field of mandrel performance testing equipment, in particular to a mandrel axial dynamic stiffness testing device.
Background
The mandrel refers to the interior of the core of the part, etc. Stiffness refers to the ability of a structure or material to resist deformation. Due to the different loads to which the structure or material is subjected, static or dynamic loads may be applied, and thus the stiffness is divided into static and dynamic stiffness. When a structure or material is subjected to a static load, the ability to resist deformation under the static load is referred to as static stiffness; when subjected to dynamic loads, the ability to resist deformation under dynamic loads is referred to as dynamic stiffness. Before the mandrel is put into use, performance tests in all aspects are required, and corresponding test equipment is required to be used during dynamic stiffness tests.
The prior art patent publication No. CN208766046U discloses a ring stiffness testing machine, which comprises a frame, a workbench horizontally arranged on the frame, a horizontal upper pressing plate positioned above the workbench, a driving mechanism for driving the upper pressing plate to move in the vertical direction, a positioning component for axially positioning a pipe fitting placed on the workbench, and a fixing component for fixing the pipe fitting placed on the workbench; the positioning assembly comprises positioning plates which are parallel to each other and are connected with the workbench in a sliding way along the same straight line; the fixing component is arranged on the positioning plate; the fixed subassembly includes briquetting and drive briquetting and carries out the driving piece of motion in vertical direction, carries out radial positioning to the pipe fitting through promotion cylinder and locating plate fast, and then compresses tightly fixedly to the pipe fitting through compressing tightly cylinder and briquetting, and driving motor drive screw rotates to drive top board down motion, and then compress the pipe fitting, tests the ring rigidity of pipe fitting.
Among the above-mentioned testing machine, can carry out the test of rigidity, the test direction is fixed, and fixed subassembly compresses tightly fixedly to the pipe fitting, influences the accuracy of pipe fitting rigidity test, needs to improve. Aiming at the problems, a mandrel axial dynamic stiffness testing device is provided.
Disclosure of Invention
The utility model aims to provide a mandrel axial dynamic stiffness testing device which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the axial dynamic stiffness testing device for the mandrel comprises a base and a portal frame arranged at the top of the base;
the top of the base is provided with a clamping mechanism arranged on the portal frame and used for clamping and fixing the mandrel;
a movable rod is arranged between vertical rods of the portal frame, a lifting mechanism for adjusting the lifting of the movable rod is arranged in the vertical rods, a mounting plate is arranged at the bottom of the movable rod, and the bottom of the mounting plate is connected with a detachable pressing plate;
the movable rod bottom is connected with the rotating seat, the mounting plate top is connected with the rotating block which is in rotating fit with the rotating seat, the two sides of the mounting plate top are hinged with the telescopic rods, and one end, far away from the mounting plate, of each telescopic rod is hinged with the movable rod.
In one alternative: the clamping mechanism comprises a hydraulic cylinder and an arc plate, wherein the hydraulic cylinder is arranged on one side, away from each other, of each of the two groups of vertical rods, and a piston rod of the power output end of the hydraulic cylinder penetrates through the vertical rod to be connected with the arc plate.
In one alternative: lifting blocks are connected to two ends of the moving rod, and lifting grooves for sliding of the lifting blocks are formed in the vertical rods.
In one alternative: the lifting mechanism comprises a screw rod arranged in a lifting groove, a motor for driving the screw rod to rotate is arranged at the top of the vertical rod, and screw holes matched with the screw rod are formed in the lifting block.
In one alternative: the telescopic rod comprises a sleeve rod and an extension rod arranged in the sleeve rod in a sliding manner, the sleeve rod is connected with a locking bolt in a threaded manner, a plurality of fixing holes matched with the locking bolt are formed in the extension rod, one end of the extension rod, far away from the sleeve rod, is hinged to a mounting plate, and one end, far away from the extension rod, of the sleeve rod is hinged to the bottom of the movable rod.
In one alternative: two sets of plug blocks are connected at the clamp plate top, be equipped with on the mounting panel with plug block complex spliced eye, mounting panel lateral wall threaded connection fixing bolt, be equipped with on the plug block with fixing bolt complex jack.
In one alternative: the telescopic rod is an electric telescopic rod.
In one alternative: and one sides of the two groups of arc plates, which are close to each other, are connected with the arc-shaped pad through a plurality of springs.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the mounting plate is movably connected to the bottom of the movable rod, the inclination of the mounting plate can be adjusted through the telescopic rod, and the angle of the mounting plate can be adjusted when the rigidity test is carried out, so that the mandrel can carry out the multi-position rigidity test, and meanwhile, the movable rigidity test is convenient;
the pressing plate is detachably arranged at the bottom of the mounting plate, and the pressing plate can be replaced according to the size of the measured mandrel, so that the pressing plate can effectively press the mandrel;
the clamping piece can clamp and fix the mandrel, and the arc-shaped plate is arranged, so that the stability of clamping the mandrel is improved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic view of a partial structure of the present utility model.
Fig. 3 is a schematic structural diagram of the lifting groove of the present utility model.
In the figure: 11. a portal frame; 12. a base; 13. a moving rod; 14. a hydraulic cylinder; 15. a piston rod; 16. an arc-shaped plate; 17. an arc-shaped pad; 18. a rotating seat; 19. a rotating block; 20. a mounting plate; 21. a pressing plate; 22. a fixing bolt; 23. a plug block; 24. an extension rod; 25. a loop bar; 26. a lifting block; 27. a screw rod; 28. lifting groove.
Detailed Description
Example 1
Referring to fig. 1-3, in an embodiment of the present utility model, a device for testing axial dynamic stiffness of a mandrel includes a base 12 and a gantry 11 mounted on top of the base 12;
the top of the base 12 is provided with a clamping mechanism arranged on the portal frame 11 and used for clamping and fixing the mandrel;
a moving rod 13 is arranged between vertical rods of the portal frame 11, a lifting mechanism for adjusting the lifting of the moving rod 13 is arranged in the vertical rods, a mounting plate 20 is arranged at the bottom of the moving rod 13, and the bottom of the mounting plate 20 is connected with a detachable pressing plate 21;
the pressing plate 21 can be replaced according to the size of the measured mandrel, so that the pressing plate 21 can effectively press the mandrel;
as shown in fig. 2, the bottom of the moving rod 13 is connected with a rotating seat 18, the top of the mounting plate 20 is connected with a rotating block 19 in rotating fit with the rotating seat 18, both sides of the top of the mounting plate 20 are hinged with telescopic rods, and one end of each telescopic rod, far away from the mounting plate 20, is hinged with the moving rod 13; the two groups of telescopic rods are telescopic to different degrees, and the mounting plate 20 can be used for adjusting the angle around the rotating joint of the rotating block 19 and the rotating seat.
As shown in fig. 1, the clamping mechanism comprises a hydraulic cylinder 14 and an arc-shaped plate 16, wherein the hydraulic cylinder 14 is arranged on one side, away from each other, of the two groups of vertical rods, and a piston rod 15 at the power output end of the hydraulic cylinder 14 penetrates through the vertical rods to be connected with the arc-shaped plate 16; the hydraulic cylinder 14 works and can control the expansion and contraction of the piston rod 15, so that the position of the arc-shaped plate 16 is adjusted, and when the arc-shaped plate 16 approaches, the mandrel can be clamped and fixed.
The two ends of the movable rod 13 are connected with lifting blocks 26, and lifting grooves 28 for sliding the lifting blocks 26 are formed in the vertical rods; the lifting block 26 is slidably height-adjustable within a lifting slot 28.
The lifting mechanism comprises a screw rod 27 arranged in a lifting groove 28, a motor for driving the screw rod 27 to rotate is arranged at the top of the vertical rod, and a screw hole matched with the screw rod 27 is formed in the lifting block 26; the motor drives the screw rod 27 to rotate, so that the position of the lifting block 26 in the lifting groove 28 can be adjusted.
The telescopic rod comprises a sleeve rod 25 and an extension rod 24 which is arranged in the sleeve rod 25 in a sliding manner, the sleeve rod 25 is connected with a locking bolt in a threaded manner, the extension rod 24 is provided with a plurality of fixing holes matched with the locking bolt, one end of the extension rod 24 away from the sleeve rod 25 is hinged with a mounting plate 20, and one end of the sleeve rod 25 away from the extension rod 24 is hinged with the bottom of the moving rod 13;
when the length of one group of telescopic rods is adjusted, the locking bolts on the other group of sleeve rods 25 can be separated from the extension rods, then the positions of the other group of extension rods 24 are adjusted, after the adjustment, the positions of the extension rods 24 are fixed by using the locking bolts, and then the positions of the other group of extension rods 24 are fixed.
The top of the pressing plate 21 is connected with two groups of plug blocks 23, the mounting plate 20 is provided with plug holes matched with the plug blocks 23, the side wall of the mounting plate 20 is connected with a fixing bolt 22 in a threaded manner, and the plug blocks 23 are provided with plug holes matched with the fixing bolt 22; the plug-in blocks 23 of the pressing plate 21 are plugged in the plug-in holes, then the plug-in blocks 23 are fixed in the plug-in holes by using the fixing bolts 22, and the position of the pressing plate 21 is fixed.
In this embodiment, the hydraulic cylinder 14 works to control the expansion and contraction of the piston rod 15, when the arc plate 16 approaches, the mandrel can be clamped and fixed, the motor drives the screw rod 27 to rotate, so that the position of the lifting block 26 in the lifting groove 28 can be adjusted, when the moving rod 13 descends, the pressing plate 21 can press the mandrel, the inclination of the mounting plate 20 can be adjusted through the telescopic rod, and when the rigidity test is performed, the angle of the mounting plate 20 can be adjusted, so that the mandrel can be subjected to multi-position rigidity test, and meanwhile, the mobile rigidity test is convenient.
Example 2
The difference from embodiment 1 is that the telescopic rod is an electric telescopic rod;
in this embodiment, the two sets of electric telescopic rods cooperate to adjust the angle of the mounting plate 20 accordingly.
Example 3
In contrast to embodiment 1, the sides of the two groups of curved plates 16, which are close to each other, are connected to the curved pad 17 by a plurality of springs;
in this embodiment, the provision of the arcuate pad 17 reduces extrusion damage to the mandrel during clamping.
Claims (8)
1. The device for testing the axial dynamic stiffness of the mandrel comprises a base (12) and a portal frame (11) arranged at the top of the base (12);
the method is characterized in that: the top of the base (12) is provided with a clamping mechanism arranged on the portal frame (11) and used for clamping and fixing the mandrel;
a movable rod (13) is arranged between vertical rods of the portal frame (11), a lifting mechanism for adjusting the lifting of the movable rod (13) is arranged in the vertical rods, a mounting plate (20) is arranged at the bottom of the movable rod (13), and the bottom of the mounting plate (20) is connected with a detachable pressing plate (21);
the bottom of the movable rod (13) is connected with a rotating seat (18), the top of the mounting plate (20) is connected with a rotating block (19) which is in rotating fit with the rotating seat (18), two sides of the top of the mounting plate (20) are hinged with telescopic rods, and one end, far away from the mounting plate (20), of each telescopic rod is hinged with the movable rod (13).
2. The mandrel axial dynamic stiffness testing apparatus of claim 1, wherein: the clamping mechanism comprises a hydraulic cylinder (14) and an arc-shaped plate (16), wherein the hydraulic cylinder (14) is arranged on one side, away from each other, of each group of vertical rods, and a piston rod (15) at the power output end of the hydraulic cylinder (14) penetrates through the vertical rods to be connected with the arc-shaped plate (16).
3. The mandrel axial dynamic stiffness testing apparatus of claim 1, wherein: lifting blocks (26) are connected to two ends of the moving rod (13), and lifting grooves (28) used for sliding the lifting blocks (26) are formed in the vertical rods.
4. A spindle axial dynamic stiffness testing apparatus according to claim 3, wherein: the lifting mechanism comprises a screw rod (27) arranged in a lifting groove (28), a motor for driving the screw rod (27) to rotate is arranged at the top of the vertical rod, and screw holes matched with the screw rod (27) are formed in the lifting block (26).
5. The mandrel axial dynamic stiffness testing apparatus of claim 1, wherein: the telescopic rod comprises a sleeve rod (25) and an extension rod (24) arranged in the sleeve rod (25) in a sliding manner, a locking bolt is connected to the sleeve rod (25) in a threaded manner, a plurality of fixing holes matched with the locking bolt are formed in the extension rod (24), one end of the extension rod (24) away from the sleeve rod (25) is hinged to a mounting plate (20), and one end of the sleeve rod (25) away from the extension rod (24) is hinged to the bottom of a moving rod (13).
6. The mandrel axial dynamic stiffness testing apparatus of claim 1, wherein: two groups of plug blocks (23) are connected to the top of the pressing plate (21), plug holes matched with the plug blocks (23) are formed in the mounting plate (20), fixing bolts (22) are connected to the side walls of the mounting plate (20) in a threaded mode, and insertion holes matched with the fixing bolts (22) are formed in the plug blocks (23).
7. The mandrel axial dynamic stiffness testing apparatus of claim 1, wherein: the telescopic rod is an electric telescopic rod.
8. A mandrel axial dynamic stiffness testing apparatus according to claim 2, wherein: the two groups of arc plates (16) are connected with the arc pad (17) through a plurality of springs at the side close to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320839146.XU CN219842261U (en) | 2023-04-17 | 2023-04-17 | Mandrel axial dynamic stiffness testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320839146.XU CN219842261U (en) | 2023-04-17 | 2023-04-17 | Mandrel axial dynamic stiffness testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219842261U true CN219842261U (en) | 2023-10-17 |
Family
ID=88303481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320839146.XU Active CN219842261U (en) | 2023-04-17 | 2023-04-17 | Mandrel axial dynamic stiffness testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219842261U (en) |
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2023
- 2023-04-17 CN CN202320839146.XU patent/CN219842261U/en active Active
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