CN217156054U - Stable excitation device for force hammer - Google Patents
Stable excitation device for force hammer Download PDFInfo
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- CN217156054U CN217156054U CN202123164023.0U CN202123164023U CN217156054U CN 217156054 U CN217156054 U CN 217156054U CN 202123164023 U CN202123164023 U CN 202123164023U CN 217156054 U CN217156054 U CN 217156054U
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- 230000005284 excitation Effects 0.000 title claims abstract description 38
- 238000006073 displacement reaction Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000006641 stabilisation Effects 0.000 claims 8
- 238000011105 stabilization Methods 0.000 claims 8
- 238000012360 testing method Methods 0.000 abstract description 22
- 230000004044 response Effects 0.000 abstract description 6
- 239000007787 solid Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model discloses an exciting arrangement is stabilized to power hammer, including the fixed cover of power hammer and power hammer main part, the fixed cover of power hammer includes the handle, power hammer carries on the stake, the deflector, the power hammer main part includes power hammer rocking arm and tup, power hammer rocking arm pivot joining in marriage on power hammer carries on the stake, the power hammer carries on and is equipped with the elastic element who is connected with power hammer rocking arm looks transmission on the stake, be equipped with the arc guide way on the deflector, be equipped with the direction slider of sliding joint in the arc guide way on the power hammer rocking arm, be equipped with direction slider stop gear on the deflector. The utility model discloses an elastic element realizes power hammer pivot displacement drive, satisfies simultaneously to power hammer each position degree nimble lock solid and release demand, possesses comparatively wide range excitation power control range. Through the matching of the locking ratchet strip and the movable ratchet plate, stable locking and accurate control of output force are realized, and the requirement of effective contrast of data during multi-point excitation single-point response and multi-point response test is met. Possess the fine motion and bounce back the ware, effectively prevent the secondary and strike the condition and take place.
Description
Technical Field
The utility model relates to a force hammer is stabilized and is aroused device belongs to the mode and arouses the technical field of test.
Background
The mode test is an effective test method for researching the structural characteristics of a tested piece, the mode is the inherent characteristics of a mechanical structure, and different sample pieces have different inherent frequencies, damping ratios and vibration modes respectively. By studying these data of the test piece, the design engineer can be helped to improve the structural strength of the test piece more efficiently to obtain satisfactory reliability.
In recent years, the modal test requirements of the current market on test pieces are gradually increased, the modal test has certain experience requirements on testers, especially in the process of being excited by a force hammer, inexperienced operators can not obtain ideal test results within a plurality of times of hammering, and therefore the test time is greatly increased.
A force hammer excitation device controlled by a servo motor exists in the market, the force hammer excitation device realizes hammering control of modal testing through servo motor control, but the price is high, hundreds of thousands of force is generated, and the test cost is greatly increased.
The Chinese invention with the authorization notice number CN104155076B discloses a worktable type automatic power hammer device and a method, which achieve the test excitation effect by calculating a control signal and controlling a motor driver to enable a motor to drive a power hammer to strike the surface of a tested piece according to the set parameters through a synchronous belt transmission system.
This structure is from dynamic force hammer device can obtain certain control in the cost, but the motor carries out power hammer pivot displacement drive structure through synchronous belt drive comparatively complicated, can produce certain reverse impact when the operation is strikeed to the power hammer, and this impact force can cause the bounce-back pivot displacement of power hammer rocking arm, produces the influence to hold-in range and motor, simultaneously because unable short time reverse rotation drive behind the motor output drive torsion, can the secondary reset after the power hammer rocking arm rebounds and strikeed, influences test effect.
Disclosure of Invention
The utility model aims at solving the not enough of above-mentioned prior art, to traditional self-powered hammer excitation device with high costs and the secondary after the power hammer rebounds easily strikes the scheduling problem, provide a power hammer and stabilize excitation device.
In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:
a force hammer stable excitation device comprises a force hammer fixing cover and a force hammer main body, wherein the force hammer fixing cover comprises a handle and a force hammer carrying pile which are arranged at intervals, and a guide plate which is positioned between the handle and the force hammer carrying pile, the force hammer main body comprises a force hammer rocker arm and a hammer head,
the power hammer rocker pivot is in fit connection with the power hammer carrying pile, the power hammer carrying pile is provided with an elastic element in transmission connection with the power hammer rocker and a limiting wall for limiting the power hammer main body in knocking, the guide plate is provided with an arc-shaped guide groove, the power hammer rocker is provided with a guide sliding block in sliding fit connection with the arc-shaped guide groove, and the guide plate is provided with a guide sliding block limiting mechanism for releasing or locking the guide sliding block.
Preferably, the guide sliding block limiting mechanism comprises a locking ratchet bar which is arranged on the guide plate and elastically displaces towards the arc-shaped guide groove, and a movable ratchet disc which is engaged with the locking ratchet bar is arranged on the guide sliding block.
Preferably, pivot deflection arms are respectively arranged between two ends of the locking ratchet strip and the guide plate, a spring piece used for being abutted against the locking ratchet strip is arranged on the guide plate, and the spring piece is arranged on one side, away from the arc-shaped guide groove, of the locking ratchet strip.
Preferably, a trigger connecting rod for driving the locking ratchet bar to release the movable ratchet plate is arranged on the guide plate.
Preferably, the locking ratchet bar is provided with scale marks.
Preferably, the power hammer rocking arm through the pivot cotter with power hammer carries on the stake and connects in detachable mutually, elastic element is including setting up join in marriage the seat on the power hammer carries on the stake, set up and be in clamp, setting on the power hammer rocking arm join in marriage the seat with at least one drive extension spring between the clamp.
Preferably, the force hammer carrying pile is provided with a micro-motion rebounder matched with the guide sliding block.
Preferably, the top of power hammer carrying pile is equipped with and is used for supplying the tup exposes strikes counterpoint fretwork portion, strike the periphery of counterpointing fretwork portion and possess a plurality of hammering terminal surface and adjust the nail.
Preferably, a plurality of adjusting and positioning protection nails facing the force hammer rocker arm are arranged on the limiting wall of the force hammer carrying pile, and an elastic protection layer is arranged at the free end of each adjusting and positioning protection nail.
Preferably, two guide plates which are arranged at intervals are arranged between the handle and the power hammer carrying pile, the arc-shaped guide grooves are arranged on the guide plates, and the guide sliding blocks which are matched with the arc-shaped guide grooves in a sliding mode in a one-to-one correspondence mode are arranged on the power hammer rocker arms.
The beneficial effects of the utility model are mainly embodied in that:
1. the elastic element is adopted to realize the pivot displacement driving of the force hammer, and simultaneously, the requirements of flexibly locking and releasing each position degree of the force hammer are met, and the excitation force adjusting range is wider.
2. Through the matching of the locking ratchet strip and the movable ratchet plate, the requirement for high-precision adjustment of the excitation force stroke is met, the accurate control of the output force is realized, and the data contrast requirement during multipoint excitation single-point response and multipoint response testing is met.
3. Possess the fine motion and bounce back the ware, effectively prevent the secondary and strike the condition and take place.
4. The hammer body can be changed in shape, has high compatibility and meets the excitation requirements of various hammer shapes.
5. The whole design is simple and ingenious, the manufacturing cost is effectively controlled, and the method has higher economic value.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of the force hammer stabilizing and exciting device of the present invention.
Fig. 2 is another view structure diagram of the force hammer stable excitation device of the present invention.
Fig. 3 is a schematic structural diagram of the force hammer before the excitation device is excited.
Fig. 4 is another view angle structure schematic diagram before the force hammer stable excitation device of the present invention is excited.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the relevant portions of the related inventions are shown in the drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The utility model provides an excitation device is stabilized to power hammer, as shown in fig. 1 to 4, including the fixed cover 1 of power hammer and power hammer main part 2, the fixed cover 1 of power hammer includes handle 3 and the power hammer that looks interval set up and carries on stake 4, be located handle and power hammer and carry on deflector 5 between the stake, and power hammer main part 2 includes power hammer rocking arm 21 and tup 22.
The force hammer rocker 21 is in pivot fit with the force hammer carrying pile 4, the force hammer carrying pile 4 is provided with an elastic element 6 in transmission connection with the force hammer rocker 21 and a limiting wall 41 for limiting knocking of the force hammer main body 2, the guide plate 5 is provided with an arc-shaped guide groove 50, the force hammer rocker 21 is provided with a guide slider 20 in sliding fit with the arc-shaped guide groove, and the guide plate 5 is provided with a guide slider limiting mechanism 7 for releasing or locking the guide slider 20.
The specific implementation process and principle description are as follows:
the handle is used for manually holding or locking the relative position of the handle, so that the striking position of the exciting tail end of the force hammer stable exciting device is matched with the position, needing striking, of the workpiece to be detected in a relative position mode.
Before the excitation operation is carried out, the corresponding pivot displacement of the force hammer rocker arm 21 is carried out according to the requirement, so that the requirement of adjusting the stroke of the hammer head 22 is met, specifically, the force hammer rocker arm 21 and the force hammer carrying pile 4 are eccentrically displaced relative to the pivot, the sliding position degree of the guide slide block 20 is adjusted in the arc-shaped guide groove 50 of the guide plate 5, and the elastic element 6 is elastically stretched.
After the stroke is adjusted to be proper, the position degree locking of the guide slide block 20 is carried out through the guide slide block limiting mechanism 7, during excitation operation, the guide slide block 20 is released by the guide slide block limiting mechanism 7, in the elastic resetting process of the elastic element 6, the force hammer rocker arm 21 is subjected to pivot axial transmission, under the guiding action of the guide slide block 20 along the arc-shaped guide groove 50, the matching position of the hammer head 22 and a workpiece to be tested is subjected to knocking excitation, the stable excitation requirement of the force hammer is met, and meanwhile, the stroke limiting of the knocking tail end of the force hammer rocker arm 21 can be realized through the limiting wall 41.
In an embodiment, the guiding slider limiting mechanism 7 comprises a locking ratchet bar 71 provided on the guiding plate 5 and elastically displaced toward the arc-shaped guiding groove 50, and the guiding slider 20 is provided with a movable ratchet plate 72 for engaging and cooperating with the locking ratchet bar 71.
Specifically, the locking ratchet bar 71 has an engaging toothed belt on a surface facing the arc-shaped guide groove 50, and the movable ratchet plate 72 has a toothed belt edge for engaging with the engaging toothed belt, so that under the elastic pressure of the locking ratchet bar 71 facing the arc-shaped guide groove 50, the movable ratchet plate 72 and the locking ratchet bar 71 are locked in relative engagement, thereby limiting the sliding displacement of the guide slider 20 under the action of the elastic element 6.
When releasing operation is carried out, the locking ratchet bar 71 is driven to move away from the arc-shaped guide groove 50, so that the locking ratchet bar is separated from the movable ratchet disc 72, and the movable ratchet disc 72 is in an unlocking state at the moment, so that the requirements of manually adjusting the position degree and releasing excitation knocking are met.
In one embodiment, pivot deflection arms 70 are respectively disposed between two ends of the locking ratchet bar 71 and the guide plate 5, a spring plate 73 for abutting against the locking ratchet bar is disposed on the guide plate 5, and the spring plate 73 is disposed on a side of the locking ratchet bar facing away from the arc-shaped guide groove.
That is, the spring plate 73 provides the elastic pressure to the locking ratchet bar towards the arc-shaped guide groove 50, so as to satisfy the relative locking stability between the locking ratchet bar and the movable ratchet plate 72 in the no-external-force state.
In one embodiment, the guide plate 5 is provided with a trigger link 74 for driving the locking ratchet bar to release the movable ratchet plate.
Specifically, referring to fig. 1 and 3, the trigger link includes a link pivotally coupled to the locking ratchet bar, and a trigger handle pivotally coupled to the guide plate, and the trigger handle is pivotally coupled to the link, and when the trigger handle is moved, the trigger link can provide a displacement drive to the locking ratchet bar, thereby achieving a free release operation, facilitating a flexible adjustment of a position degree of the guide slider 20, and facilitating a release operation.
In one embodiment, the locking ratchet bar 71 is provided with scale markings 710.
Specifically, the position degree adjustment of the guide slider 20 in the arc-shaped guide groove 50 directly affects the elastic pivot stroke of the hammer 22, the stroke is associated with the required knocking excitation action, the accurate control of the knocking excitation amount released after the position degrees of the guide slider 20 are locked can be realized through the scale mark 710, and the application is more flexible and efficient.
In one embodiment, the hammer arm 21 is detachably coupled to the hammer carrier 4 via the pivot pin 10, and the elastic element 6 includes a coupling seat 61 disposed on the hammer carrier, a clamp 62 disposed on the hammer arm, and at least one tension drive spring 63 disposed between the coupling seat and the clamp.
Specifically, the hammer main bodies 2 have different specifications, and particularly, the hammer head 22 has various striking surfaces with different specifications, such as a conical column type, a flat type, an arc type, and the like, and different hammer main bodies 2 need to be mounted according to different test requirements.
Therefore, the design of the force hammer main body 2 which can be detachably carried is adopted, the detachable pivot of the force hammer rocker arm 21 is connected in a matching mode through the rotating shaft pin bolt 10, and meanwhile, the detachable matching between the force hammer rocker arm 21 and the force hammer rocker arm is realized through the clamp 62, and the requirement for changing the type of the force hammer main body 2 is met. Of course, the guiding slide 20 and the hammer body are detachably connected.
Meanwhile, the tension springs with different elastic coefficients can be replaced according to different excitation force requirements.
In a specific embodiment, the hammer carrying pile 4 is provided with a micro-spring-back device 8 for cooperating with the guide slide.
Specifically speaking, the micro-motion rebounder 8 is a triggering rebounding component, and belongs to the prior art, after the force hammer rocker arm 21 is released, the knocking tail end of the force hammer rocker arm can contact with the triggering part of the micro-motion rebounder 8, after the force hammer rocker arm is contacted with the triggering part, the hammer head 22 completes knocking excitation, the triggering part generates rebounding displacement at the moment, the force hammer rocker arm 21 is forced to generate reverse displacement along the direction of an excitation pivot, and therefore the hammer head 22 is effectively prevented from generating secondary knocking on a test workpiece, and the test is more reliable and stable.
In an embodiment, the top of the hammer-carrying pile 4 is provided with a knocking alignment hollow-out portion 42 for exposing the hammer head, and the periphery of the knocking alignment hollow-out portion is provided with a plurality of hammering end surface adjusting nails 420.
Specifically, the hammering end face adjusting nail 420 is used for pre-alignment matching according to the workpiece knocking position, the hammer head 22 has an exposed knocking end face exposed relative to the knocking alignment hollow-out portion 42, and the position degree of the hammering end face adjusting nail 420 is adjusted by a micro stroke required for knocking.
Specifically, the hammering end face adjusting nail 420 is adjusted flush with the hammering end face of the hammer head 22, the retraction adjustment of the hammering end face adjusting nail 420 is performed according to requirements, the pre-alignment end face formed by the hammering end face adjusting nail 420 is matched with the testing position of a testing workpiece for pre-alignment, and the requirement of hammer head knocking excitation adaptability is met.
In a specific embodiment, the limiting wall 41 of the hammer carrying pile 4 is provided with a plurality of positioning adjusting protection nails 410 facing the hammer rocker, and the free ends of the positioning adjusting protection nails are provided with elastic protection layers.
Specifically, the adjusting positioning protection nail 410 is used for adjusting the relative parallelism between the force hammer rocker 21 and the force hammer carrying pile 4, that is, the relative parallelism meets the requirement that the hammer head 22 is perpendicular to the striking phase of the test piece during striking and exciting operation of the hammer head 22, and of course, the perpendicular striking also needs to be coordinated with the hammering end face adjusting nail 420, so that the requirement that the perpendicular exciting effect at the striking position is obvious is met.
This adjust location protection nail can also play the terminal spacing protection demand, prevents effectively that the power hammer main part from carrying on 4 production impact damage of stake to the power hammer, has prolonged its effective life.
In one embodiment, two guide plates 5 arranged at intervals are arranged between the handle and the force hammer carrying pile, an arc-shaped guide groove is formed in any guide plate, and guide sliding blocks matched with the arc-shaped guide grooves in a sliding mode are arranged on the force hammer rocker arm in a one-to-one corresponding mode.
Specifically speaking, two guide plates 5 arranged at intervals form a containing space for containing the hammer main body 2, built-in protection requirements are met, meanwhile, the two sides are matched in a sliding and matching mode, the guiding stability of the pivot displacement of the rocker arm of the hammer can be improved, and the excitation operation of the rocker arm is more stable and reliable.
Can discover through the above description, the utility model relates to a force hammer stabilizes excitation device adopts elastic element to realize the drive of force hammer pivot displacement, satisfies simultaneously to each position degree of force hammer nimble lock solid and release demand, possesses comparatively wide range excitation power control range. Through the matching of the locking ratchet strip and the movable ratchet plate, the requirement for high-precision adjustment of the excitation force stroke is met, the accurate control of the output force is realized, and the data contrast requirement during multipoint excitation single-point response and multipoint response testing is met. Possess the fine motion and bounce back the ware, effectively prevent the secondary and strike the condition and take place. The hammer body can be changed in shape, has high compatibility and meets the excitation requirements of various hammer shapes. The whole design is simple and ingenious, the manufacturing cost is effectively controlled, and the method has higher economic value.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims (10)
1. A force hammer stable excitation device is characterized in that:
comprises a force hammer fixing cover and a force hammer main body, wherein the force hammer fixing cover comprises a grip and a force hammer carrying pile which are arranged at intervals, and a guide plate which is positioned between the grip and the force hammer carrying pile, the force hammer main body comprises a force hammer rocker arm and a hammer head,
the power hammer rocker pivot is in fit connection with the power hammer carrying pile, the power hammer carrying pile is provided with an elastic element in transmission connection with the power hammer rocker and a limiting wall for limiting the power hammer main body in knocking, the guide plate is provided with an arc-shaped guide groove, the power hammer rocker is provided with a guide sliding block in sliding fit connection with the arc-shaped guide groove, and the guide plate is provided with a guide sliding block limiting mechanism for releasing or locking the guide sliding block.
2. A force hammer stabilization actuator as set forth in claim 1, wherein:
the guide sliding block limiting mechanism comprises a locking ratchet strip which is arranged on the guide plate and faces towards the arc-shaped guide groove in elastic displacement, and a movable ratchet disc which is meshed and matched with the locking ratchet strip is arranged on the guide sliding block.
3. A stable excitation device for a force hammer as claimed in claim 2, wherein:
the locking ratchet mechanism is characterized in that pivot deflection arms are respectively arranged between two ends of the locking ratchet strip and the guide plate, spring pieces used for being abutted against the locking ratchet strip are arranged on the guide plate, and the spring pieces are arranged on one side, deviating from the arc-shaped guide groove, of the locking ratchet strip.
4. A force hammer stabilization actuator as set forth in claim 2, wherein:
and a trigger connecting rod for driving the locking ratchet bar to release the movable ratchet disc is arranged on the guide plate.
5. A force hammer stabilization actuator as set forth in claim 2, wherein:
and the locking ratchet wheel strip is provided with scale marks.
6. A force hammer stabilization actuator as set forth in claim 2, wherein:
the power hammer rocking arm through the pivot cotter with power hammer carries on the stake and connects in detachable mode mutually, elastic element is including setting up join in marriage on the power hammer carries on the stake seat, set up and be in clamp, the setting on the power hammer rocking arm join in marriage the seat with at least one drive extension spring between the clamp.
7. A force hammer stabilization excitation device according to any one of claims 1 to 6, wherein:
and the force hammer carrying pile is provided with a micro-motion rebounder matched with the guide sliding block.
8. A force hammer stabilization actuator as set forth in claim 1, wherein:
the top of power hammer carrying pile is equipped with and is used for supplying the tup exposes strikes counterpoint fretwork portion, strike the periphery of counterpointing fretwork portion and possess a plurality of hammering terminal surface and adjust the nail.
9. A force hammer stabilization actuator as set forth in claim 1, wherein:
the limiting wall of the force hammer carrying pile is provided with a plurality of adjusting and positioning protection nails towards the force hammer rocker arm, and the free end of each adjusting and positioning protection nail is provided with an elastic protection layer.
10. A force hammer stabilization actuator as set forth in claim 1, wherein:
two guide plates which are arranged at intervals are arranged between the handle and the power hammer carrying pile, the arc-shaped guide grooves are arranged on the guide plates, and the guide sliding blocks which are matched with the arc-shaped guide grooves in a sliding mode in a one-to-one correspondence mode are arranged on the power hammer rocker arms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123164023.0U CN217156054U (en) | 2021-12-16 | 2021-12-16 | Stable excitation device for force hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123164023.0U CN217156054U (en) | 2021-12-16 | 2021-12-16 | Stable excitation device for force hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217156054U true CN217156054U (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123164023.0U Active CN217156054U (en) | 2021-12-16 | 2021-12-16 | Stable excitation device for force hammer |
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| Country | Link |
|---|---|
| CN (1) | CN217156054U (en) |
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2021
- 2021-12-16 CN CN202123164023.0U patent/CN217156054U/en active Active
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