CN203163874U - Light hammer device for testing dynamic characteristic parameters of flexible structure - Google Patents
Light hammer device for testing dynamic characteristic parameters of flexible structure Download PDFInfo
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- CN203163874U CN203163874U CN 201320174818 CN201320174818U CN203163874U CN 203163874 U CN203163874 U CN 203163874U CN 201320174818 CN201320174818 CN 201320174818 CN 201320174818 U CN201320174818 U CN 201320174818U CN 203163874 U CN203163874 U CN 203163874U
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Abstract
The utility model provides a light hammer device for testing dynamic characteristic parameters of a flexible structure, belonging to the technical field of a construction engineering test. The utility model aims to solve a problem that the dynamic characteristic parameters of the flexible structure can not be tested by using a large hammer. The light hammer device comprises a cylindrical hammer head, a cylindrical hammer handle, a first spring pad, a high sensitivity force sensor, a second spring pad, a bolt and a shock liner. The center of an end face of the cylindrical hammer head is provided with an axial threaded hole. One end of the cylindrical hammer handle is welded with the middle part of an outer side face of the cylindrical hammer head. The center of an end face of the shock liner is processed with a hexagonal hole matched with the hexagon head of the bolt and a mounting hole matched with the second spring pad. The high sensitivity force sensor is annular. The rod of the bolt passes through the second spring pad, the high sensitivity force sensor and the first spring pad to be in threaded connection with the axial threaded hole of the cylindrical hammer head. The second spring pad is arranged in the mounting hole of the shock liner. The hexagon head of the bolt is arranged in the hexagonal hole of the shock liner. The light hammer device is used for testing the dynamic characteristic parameters of a flexible or small structure.
Description
Technical field
The utility model relates to a kind of device of testing flexible structure kinematic behavior parameter, belongs to construction work experimental technique field.
Background technology
The kinetic parameter of building engineering structure (as natural frequency, the vibration shape etc.) is its key of carrying out dynamic analysis and evaluation.For the natural frequency of structure, measuring is calculated more easy and the actual result of reaction structure under conditions such as boundary condition, material really directly than theoretical.
Adopt the simple harmonic quantity advocate approach to measure structural natural frequencies the earliest, this method needs to carry out frequency sweeping from low to high one by one, and is more time-consuming, loaded down with trivial details.After spectral analysis technology is used, developed the method excited by impact (or counterweight striking) of doing excitation with impulse load, this method is simple to operate, obtain bigger exciting force easily, can evoke the natural frequency of higher-order, therefore in the natural frequency test of Industrial and Civil Engineering structure, obtain to use widely.
Power hammer is to use hammering method to carry out the indispensable main tool of structural dynamic test, and installing force sensor on the power hammer is gathered impulsive force signal and response signal simultaneously, through each rank that transfer function analysis can obtain structure admittedly frequently and kinetic parameter such as damping.But, adopt large-scale power hammer can't test flexible structure kinematic behavior parameter.
The utility model content
The purpose of this utility model provides a kind of light-duty power hammer device of testing flexible structure kinematic behavior parameter, adopts large-scale power hammer can't test the problem of flexible structure kinematic behavior parameter to solve.
Realize above-mentioned purpose, the technical scheme that the utility model is taked is:
A kind of light-duty power hammer device of testing flexible structure kinematic behavior parameter, described light-duty power hammer device comprises the right cylinder tup, the right cylinder hammer handle, first spring pad, high sensitivity power sensor, second spring pad, bolt and impact pad, right cylinder tup one end face center is provided with the axial thread hole, the middle part welding of one end of right cylinder hammer handle and right cylinder tup lateral surface, the center of one end face of described impact pad is processed with the hex hole that matches with the hexagon head of bolt and the mounting hole that matches with second spring pad, high sensitivity power sensor is annular, the screw rod of bolt passes second spring pad successively, high sensitivity power sensor and first spring pad are threaded with the axial thread hole of right cylinder tup, second spring pad is arranged in the mounting hole of impact pad, and the hexagon head of bolt is arranged in the hex hole of impact pad.
Preferably: the diameter of described right cylinder tup is 50mm, and the length of right cylinder tup is 120mm.
Preferably, the diameter 30mm of described right cylinder hammer handle, the length of right cylinder hammer handle is 200mm.
Preferably, described impact pad is metal impact pad, nylon impact pad, felt impact pad or rubber impact liner.
The utility model with respect to the beneficial effect of prior art is:
The utility model utilizes all self-vibration characteristics of lighter structure of light-duty power hammer test rigidity and quality, can use less, the characteristics such as rigidity is relatively poor, the natural frequency of vibration of the structure of lighter weight, the self-vibration vibration shape of hammering method test size, principle according to hammering method test structure vibration characteristics, utilize bolt high sensitivity power sensor to be fixed to an end (impact end) of right cylinder tup, the hexagon head of bolt installs impact pad additional, and right cylinder tup and right cylinder hammer handle adopt welding connecting mode.This light-duty power hammer apparatus structure is simple, compact volume and convenience, flexible operation, the flexibility that can testing large power hammer can't finish or the kinematic behavior parameter of small-scale structure.
Description of drawings
Fig. 1 is a kind of one-piece construction front view of testing the light-duty power hammer device of flexible structure kinematic behavior parameter;
Fig. 2 is the A place enlarged drawing among Fig. 1.
Among the figure, right cylinder tup 1, right cylinder hammer handle 2, first spring pad 3, high sensitivity power sensor 4, second spring pad 5, bolt 6, impact pad 7.
Embodiment
Embodiment one: as shown in Figures 1 and 2, a kind of light-duty power hammer device of testing flexible structure kinematic behavior parameter, described light-duty power hammer device comprises right cylinder tup 1, right cylinder hammer handle 2, first spring pad 3, high sensitivity power sensor 4, second spring pad 5, bolt 6 and impact pad 7, right cylinder tup 1 one end face centers are provided with the axial thread hole, the nominal diameter in axial thread hole is 20mm, the axial thread hole depth is 20mm, in order to erection bolt 6, the middle part welding of one end of right cylinder hammer handle 2 and right cylinder tup 1 lateral surface, the center of one end face of described impact pad 7 is processed with the hex hole that matches with the hexagon head of bolt 6 and the mounting hole that matches with second spring pad 5, high sensitivity power sensor 4 is annular, the screw rod of bolt 6 passes second spring pad 5 successively, high sensitivity power sensor 4 and first spring pad 3 are threaded with the axial thread hole of right cylinder tup 1, second spring pad 5 is arranged in the mounting hole of impact pad 7, and the hexagon head of bolt 6 is arranged in the hex hole of impact pad 7.High sensitivity power sensor 4 is made by the safe permanent Electronics Co., Ltd. in Xi'an, and model is selected as required.
The effect that first spring pad 3 is set between right cylinder tup 1 and the high sensitivity power sensor 4 is that it is more firm to make that high sensitivity power sensor 4 is installed, and also reserves enough spaces for the signal wire termination of high sensitivity power sensor 4 simultaneously.
High sensitivity power sensor 4 be shaped as annular, can be nested into the bolt that nominal diameter is 20mm, and not stay too big space.
The purpose that second spring pad 5 is set between the hexagon head of high sensitivity power sensor 4 and bolt 6 is to separate the hexagon head of high sensitivity power sensor 4 and bolt 6, thinks that enough spaces are reserved in the installation of impact pad 7.
The effect of bolt 6 is fixing high sensitivity power sensors 4 and impact pad 7 is installed, and the employing nominal diameter is that 20mm, length are the full line hexagon head bolt of 30mm.
Embodiment two: as shown in Figure 1, embodiment one described a kind of light-duty power hammer device of testing flexible structure kinematic behavior parameter, the diameter of described right cylinder tup 1 is 50mm, the length of right cylinder tup 1 is 120mm.
Embodiment three: as shown in Figure 1, embodiment one described a kind of light-duty power hammer device of testing flexible structure kinematic behavior parameter, the diameter 30mm of described right cylinder hammer handle 2, the length of right cylinder hammer handle 2 is 200mm.
Embodiment four: as shown in Figures 1 and 2, embodiment one, two or three described a kind of light-duty power hammer devices of testing flexible structure kinematic behavior parameter, described impact pad 7 is metal impact pad, nylon impact pad, felt impact pad or rubber impact liner.Difference according to test request is selected for use as required.
At the test architecture engineering site as shown in Figure 1, each assembly is installed by figure, be connected with sensor signal lines on the high sensitivity power sensor, hold the right cylinder hammer handle during test and hammering is carried out at the engineering structure position of test, it should be noted that during operation, the right cylinder tup will lift after touching structure fast, can not allow right cylinder tup and structure long duration of contact, the right cylinder tup is stopped structurally, so formation is knocked continuously, can use the parameters such as the natural frequency of vibration, the vibration shape of the tested building structure of transfer function analysis.
Claims (4)
1. a light-duty power of testing flexible structure kinematic behavior parameter is hammered device into shape, it is characterized in that: described light-duty power hammer device comprises right cylinder tup (1), right cylinder hammer handle (2), first spring pad (3), high sensitivity power sensor (4), second spring pad (5), bolt (6) and impact pad (7), right cylinder tup (1) one end face center is provided with the axial thread hole, the middle part welding of one end of right cylinder hammer handle (2) and right cylinder tup (1) lateral surface, the center of one end face of described impact pad (7) is processed with the hex hole that matches with the hexagon head of bolt (6) and the mounting hole that matches with second spring pad (5), high sensitivity power sensor (4) is annular, the screw rod of bolt (6) passes second spring pad (5) successively, high sensitivity power sensor (4) and first spring pad (3) are threaded with the axial thread hole of right cylinder tup (1), second spring pad (5) is arranged in the mounting hole of impact pad (7), and the hexagon head of bolt (6) is arranged in the hex hole of impact pad (7).
2. a kind of light-duty power of testing flexible structure kinematic behavior parameter as claimed in claim 1 is hammered device into shape, and it is characterized in that: the diameter of described right cylinder tup (1) is 50mm, and the length of right cylinder tup (1) is 120mm.
3. a kind of light-duty power of testing flexible structure kinematic behavior parameter as claimed in claim 1 is hammered device into shape, and it is characterized in that: the diameter 30mm of described right cylinder hammer handle (2), the length of right cylinder hammer handle (2) is 200mm.
4. as claim 1,2 or 3 described a kind of light-duty power hammer devices of testing flexible structure kinematic behavior parameter, it is characterized in that: described impact pad (7) is metal impact pad, nylon impact pad, felt impact pad or rubber impact liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320174818 CN203163874U (en) | 2013-04-09 | 2013-04-09 | Light hammer device for testing dynamic characteristic parameters of flexible structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320174818 CN203163874U (en) | 2013-04-09 | 2013-04-09 | Light hammer device for testing dynamic characteristic parameters of flexible structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203163874U true CN203163874U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320174818 Expired - Fee Related CN203163874U (en) | 2013-04-09 | 2013-04-09 | Light hammer device for testing dynamic characteristic parameters of flexible structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203163874U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115389147A (en) * | 2022-09-22 | 2022-11-25 | 哈尔滨工程大学 | Trigger type force hammer device suitable for various test environments |
-
2013
- 2013-04-09 CN CN 201320174818 patent/CN203163874U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115389147A (en) * | 2022-09-22 | 2022-11-25 | 哈尔滨工程大学 | Trigger type force hammer device suitable for various test environments |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20140409 |