CN214171226U - Damping device for lead screw of testing machine - Google Patents
Damping device for lead screw of testing machine Download PDFInfo
- Publication number
- CN214171226U CN214171226U CN202022304897.0U CN202022304897U CN214171226U CN 214171226 U CN214171226 U CN 214171226U CN 202022304897 U CN202022304897 U CN 202022304897U CN 214171226 U CN214171226 U CN 214171226U
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- screw rod
- base
- damping
- testing machine
- compression spring
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Abstract
The utility model relates to a damping device for a screw rod of a testing machine, which comprises a screw rod, wherein a lifting nut used for connecting a movable beam is arranged on the screw rod, the lower end of the screw rod is inserted into an installation hole of a base, the bottom of the screw rod is installed in the base through a locking nut, and a transmission chain wheel is installed at the lower part of the screw rod; the damping device is characterized in that the screw rod is sleeved with a damping compression spring, the lower part of the screw rod is provided with a step part, the upper end of the damping compression spring is abutted against the step part, and the lower end of the damping compression spring is abutted against the upper end of the base mounting hole; the lower extreme installation snubber block of lead screw, the upper end of snubber block supports inner wall, the lower extreme of base mounting hole and supports lock nut. The shock absorption block is made of polyurethane rubber. The utility model discloses when the testing machine atress upwards shakes, the effort is cut down to spring and the polyurethane rubber snubber block of compressed, plays the cushioning effect.
Description
Technical Field
The utility model relates to a damping device for testing machine lead screw belongs to damping device technical field.
Background
In the prior product technology in China, the testing machine is stressed to vibrate upwards at the moment when a test piece is damaged in the test. When the testing machine is installed, the testing machine is fixed on the foundation by pouring 4 bolts, so that the service life of the movable beam and the base is shortened by vibration, and vibration waves are brought to the ground of a laboratory.
Disclosure of Invention
An object of the utility model is to overcome exist not enough among the prior art, provide a damping device for testing machine lead screw, when the testing machine atress upwards shakes, the effort is cut down to compressed spring and polyurethane rubber snubber block, plays the cushioning effect.
According to the utility model provides a technical scheme: a damping device for a screw rod of a testing machine comprises the screw rod, wherein a lifting nut used for connecting a movable cross beam is arranged on the screw rod, the lower end of the screw rod is inserted into an installation hole of a base, the bottom of the screw rod is installed in the base through a locking nut, and a transmission chain wheel is installed at the lower part of the screw rod; the damping device is characterized in that the screw rod is sleeved with a damping compression spring, the lower part of the screw rod is provided with a step part, the upper end of the damping compression spring is abutted against the step part, and the lower end of the damping compression spring is abutted against the upper end of the base mounting hole; the lower extreme installation snubber block of lead screw, the upper end of snubber block supports inner wall, the lower extreme of base mounting hole and supports lock nut.
Further, a bearing is installed in the installation hole of the base, and the top of the bearing is flush with the surface of the base.
Further, the lower end of the damping compression spring abuts against the bearing.
Furthermore, copper sleeves are sleeved on the screw rods at the lower end of the bearing and the upper end of the damping block respectively.
Further, the material of the shock absorption block is polyurethane rubber.
Compared with the prior art, the utility model, have following advantage:
1. when the lead screw transmits vibration, the impact on the movable cross beam and the base is reduced, so that the shock absorption is achieved.
2. When the testing machine is stressed to vibrate upwards, the compressed spring and the polyurethane rubber damping block reduce the acting force and play a role in damping.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of reference numerals: 1-moving beam, 2-lifting nut, 3-screw rod, 4-driving chain wheel, 5-damping compression spring, 6-bearing, 7-base, 8-copper sleeve, 9-shock absorption block, 10-locking nut and 11-step part.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, a damping device for a lead screw of a universal testing machine comprises a lead screw 3, wherein a lifting nut 2 used for connecting a movable beam 1 is arranged on the lead screw 3, the lower end of the lead screw 3 is inserted into an installation hole of a base 7, the bottom of the lead screw 3 is installed in the base 7 through a locking nut 10, and a transmission chain wheel 4 is installed at the lower part of the lead screw 3; the screw rod 3 is sleeved with a damping compression spring 5, the lower part of the screw rod 3 is provided with a step part 11, the upper end of the damping compression spring 5 is abutted against the step part 11, and the lower end of the damping compression spring is abutted against the upper end of the base mounting hole; the lower extreme installation snubber block 9 of lead screw 3, the upper end of snubber block 9 supports inner wall, the lower extreme of base mounting hole and supports lock nut 10.
And a bearing 6 is arranged in the mounting hole of the base 7, and the top of the bearing 6 is flush with the surface of the base 7.
The lower end of the damping compression spring 5 is propped against the bearing 6.
And the lower end of the bearing 6 and the screw rod 3 at the upper end of the damping block 9 are respectively sleeved with a copper sleeve 8.
The shock absorption block 9 is made of polyurethane rubber.
The working process is as follows:
firstly, a transmission chain wheel 4 is arranged on a screw rod 3, and a damping compression spring 5 is sleeved in the screw rod 3; a copper bush 8 and a bearing 6 are arranged in a mounting hole of the screw rod 3 on the base 7; the screw rod 3 is vertically inserted into the mounting hole, the copper sleeve 8 and the shock absorption block 9 are sequentially arranged at the lower end of the screw rod 3, the screw rod 3 is fastened in the base 7 through the locking nut 10, and then the lifting nut 2 is screwed in and is arranged in the movable beam 1.
Compared with the prior art, the utility model has the advantages that: when the screw rod 3 transmits vibration, the impact on the movable cross beam 1 and the base 7 is reduced, so that the shock absorption is achieved.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (5)
1. A damping device for a screw rod of a testing machine comprises a screw rod (3), wherein a lifting nut (2) used for connecting a movable cross beam (1) is arranged on the screw rod (3), the lower end of the screw rod (3) is inserted into a mounting hole of a base (7), the bottom of the screw rod (3) is mounted in the base (7) through a locking nut (10), and a transmission chain wheel (4) is mounted at the lower part of the screw rod (3); the damping device is characterized in that the screw rod (3) is sleeved with a damping compression spring (5), a step part (11) is arranged at the lower part of the screw rod (3), the upper end of the damping compression spring (5) is abutted against the step part (11), and the lower end of the damping compression spring is abutted against the upper end of the base mounting hole; the lower extreme installation snubber block (9) of lead screw (3), the upper end of snubber block (9) supports inner wall, the lower extreme of base mounting hole and supports lock nut (10).
2. The shock-absorbing device for the screw rod of the testing machine is characterized in that a bearing (6) is installed in an installation hole of the base (7), and the top of the bearing (6) is flush with the surface of the base (7).
3. A shock-absorbing device for a screw of a testing machine according to claim 2, characterized in that the lower end of the damping compression spring (5) abuts against the bearing (6).
4. The shock-absorbing device for the screw rod of the testing machine as claimed in claim 2, wherein the lower end of the bearing (6) and the screw rod (3) at the upper end of the shock-absorbing block (9) are respectively sleeved with a copper sleeve (8).
5. The damping device for the screw of the testing machine as claimed in claim 1, characterized in that the damping block (9) is made of polyurethane rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022304897.0U CN214171226U (en) | 2020-10-15 | 2020-10-15 | Damping device for lead screw of testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022304897.0U CN214171226U (en) | 2020-10-15 | 2020-10-15 | Damping device for lead screw of testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214171226U true CN214171226U (en) | 2021-09-10 |
Family
ID=77597223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022304897.0U Active CN214171226U (en) | 2020-10-15 | 2020-10-15 | Damping device for lead screw of testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214171226U (en) |
-
2020
- 2020-10-15 CN CN202022304897.0U patent/CN214171226U/en active Active
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