CN111896206A - Suspension part impact test stand - Google Patents
Suspension part impact test stand Download PDFInfo
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- CN111896206A CN111896206A CN202010791591.4A CN202010791591A CN111896206A CN 111896206 A CN111896206 A CN 111896206A CN 202010791591 A CN202010791591 A CN 202010791591A CN 111896206 A CN111896206 A CN 111896206A
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- hammer head
- transmission shaft
- base
- wire roller
- end cover
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0078—Shock-testing of vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a suspension part impact test stand which comprises a base, a hammer head mechanism, a driving motor, an electromagnetic clutch and a hammer head retracting mechanism, wherein the hammer head mechanism is arranged on the base; the hammer head mechanism is arranged on the base and is used for impacting suspension parts; the driving motor is arranged on the base and used for providing driving force; the electromagnetic clutch is connected with a driving shaft of the driving motor; the hammer head retracting and releasing mechanism is connected with a driving shaft of the driving motor through the electromagnetic clutch and is used for automatically retracting and releasing the hammer head mechanism through a cable so as to prevent the hammer head mechanism from impacting suspension parts for the second time; the suspension part impact test stand can realize automatic retraction and release of the hammer head mechanism, and simultaneously prevents the hammer head mechanism from impacting suspension parts for the second time.
Description
Technical Field
The invention relates to the field of impact tests of automobile parts, in particular to an impact test bed for suspension parts.
Background
Suspension spare part relates to metal, rubber etc. spare part of many types, and in intensity impact test, the tup can bounce back and cause the secondary impact to the sample piece usually after accomplishing the impact, and the percussion power that the tup applyed to the sample piece is uncontrollable during the secondary impact, and the test result accuracy can receive very big influence.
The impact test bed in the related art cannot simply, effectively and reliably control the movement of the hammer head, cannot prevent the hammer head from impacting a test sample piece for the second time, and meanwhile, the impact test bed in the related art has a weak automatic retraction and extension function and limited impact test capability on the strength of suspension parts.
Disclosure of Invention
The embodiment of the invention provides an impact test stand for suspension parts, which can realize automatic retraction of a hammer head mechanism and prevent the hammer head mechanism from impacting the suspension parts for the second time.
On one hand, the embodiment of the invention provides a suspension part impact test bed which comprises a base, a hammer head mechanism, a driving motor, an electromagnetic clutch and a hammer head retraction and release mechanism, wherein the base is provided with a support; the hammer head mechanism is arranged on the base and is used for impacting suspension parts; the driving motor is arranged on the base and used for providing driving force; the electromagnetic clutch is connected with a driving shaft of the driving motor; the hammer head retracting mechanism is connected with a driving shaft of the driving motor through the electromagnetic clutch and used for automatically retracting and releasing the hammer head mechanism through a cable so as to prevent the hammer head mechanism from impacting suspension parts for the second time.
In some embodiments, the hammer head retraction and release mechanism comprises a wire roller structure, a transmission shaft, a return spring, a reverse rotation self-locking structure and a secondary impact prevention self-locking structure; the wire roller structure comprises a wire roller main body wound with a cable, a first wire roller end cover and a second wire roller end cover, wherein the first wire roller end cover and the second wire roller end cover are arranged at two ends of the wire roller main body; the transmission shaft comprises a first transmission shaft connected to the first wire roller end cover close to the electromagnetic clutch and a second transmission shaft in driving connection with the driving shaft of the driving motor through the electromagnetic clutch, and the second transmission shaft is sleeved in the first transmission shaft; the second transmission shaft penetrates through the wire roller main body, the first wire roller end cover and the second wire roller end cover; the return spring is arranged on the second wire roller end cover far away from the electromagnetic clutch; the reverse rotation self-locking structure is arranged on the second transmission shaft and is connected to the first wire roller end cover close to the electromagnetic clutch; the secondary impact preventing self-locking structure is arranged on the second transmission shaft and connected to the second thread roller end cover; the reverse rotation self-locking structure drives the second transmission shaft to drive the secondary impact prevention self-locking structure to rotate so that the secondary impact prevention self-locking structure limits the second wire rolling end cover to rotate.
In some embodiments, a first groove is formed in the first thread roller end cover; the reverse rotation self-locking structure comprises a first ratchet wheel connected to the second transmission shaft and arranged in the first groove, and a plurality of first pawls connected to the first wire roller end cover; the circumference of the first ratchet wheel is in a gear shape, and the first pawls are arranged on the circumference of the first ratchet wheel in a gear shape.
In some embodiments, the reverse rotation self-locking structure further comprises a plurality of pawl springs, one end of each pawl spring is connected with the first pawl, and the other end of each pawl spring is fixed on the first thread roller end cover; wherein the plurality of pawl springs matches the number of the plurality of first pawls.
In some embodiments, the first pawls and the pawl springs are provided in two, and the two first pawls are symmetrically arranged along the second transmission shaft.
In some embodiments, a second groove is formed in the second thread roller end cover, and the circumference of the second groove is in a gear shape; the secondary impact preventing self-locking structure comprises a second ratchet wheel connected to the second transmission shaft and arranged in the second groove, and a plurality of second pawls which are rotatably arranged on the second ratchet wheel in the circumferential direction through pin shafts; the second pawls are clamped at the positions of the second grooves, which are circumferentially arranged to form gears.
In some embodiments, the base comprises a first base supported by the drive motor and the ram retraction mechanism, a second base supported by the ram mechanism, and a third base supported by a suspension component; the first base, the second base and the third base are connected through a connecting rod.
In some embodiments, the first base includes a support plate connected to the connecting rod, and two opposite brackets disposed on the support plate, the driving shaft of the driving motor passes through the brackets, the hammer head retracting mechanism is disposed between the two brackets, and the second transmission shaft is connected to the brackets through a bearing.
In some embodiments, the hammer head mechanism includes a hammer head threadedly connected to the second base, the hammer head being connected to the wire roller body by a cable.
In some embodiments, the hammer head mechanism further comprises a counterweight attached to the second base by a bolt.
The technical scheme provided by the invention has the beneficial effects that: the hammer head retracting mechanism and the driving shaft of the driving motor can be connected or disconnected through the electromagnetic clutch, when the electromagnetic clutch controls the hammer head retracting mechanism and the driving motor to be disconnected, the hammer head retracting mechanism is not driven by the driving motor, and the hammer head retracting mechanism can automatically retract and release the hammer head mechanism through a cable so as to prevent the hammer head mechanism from impacting suspension parts for the second time; when the electromagnetic clutch controls the hammer head retracting and releasing mechanism and the driving motor to be closed, the driving motor drives the hammer head retracting and releasing mechanism to rotate, the driving wire roller retracting and releasing structure is driven by the driving motor to rotate reversely until the hammer head mechanism returns to the impact height again, and therefore the purpose of lifting the hammer head is achieved, and the next impact test is started again. Therefore, the suspension part impact test stand is compact in structure, the automatic retraction and release of the hammer mechanism can be realized through the hammer retraction and release mechanism, the secondary impact of the hammer mechanism on the suspension part is also prevented, and the automatic strength impact test of the hammer mechanism on the suspension part can be reliably and effectively realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic illustration of an explosive structure according to an embodiment of the present invention;
fig. 3 is an exploded view of a hammer head retracting mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a first thread roller end cap according to an embodiment of the present invention;
fig. 5 is a schematic structural view of the secondary impact prevention self-locking structure according to the embodiment of the invention.
In the figure: 1. a base; 10. a first base; 100. a support plate; 101. a support; 11. a second base; 12. a third base; 13. a connecting rod; 2. a hammer head mechanism; 20. a hammer head; 21. balancing weight; 3. a drive motor; 4. an electromagnetic clutch; 5. a hammer head retracting mechanism; 50. a wire roll structure; 500. a wire roll body; 501. a first thread roll end cap; 5010. a first groove; 502. a second thread roller end cap; 5020. a second groove; 51. a drive shaft; 510. a first drive shaft; 511. a second drive shaft; 52. a return spring; 53. a reverse rotation self-locking structure; 530. a first ratchet wheel; 531. a first pawl; 532. a pawl spring; 54. the self-locking structure can prevent secondary impact; 540. a second ratchet wheel; 541. a second pawl.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
See fig. 1, 2; the embodiment of the invention provides a suspension part impact test stand which comprises a base 1, a hammer head mechanism 2, a driving motor 3, an electromagnetic clutch 4 and a hammer head retracting mechanism 5, wherein the hammer head mechanism comprises a hammer head driving mechanism and a hammer head driving mechanism; the hammer head mechanism 2 is arranged on the base 1, and the hammer head mechanism 2 is used for impacting suspension parts; the driving motor 3 is arranged on the base 1, and the driving motor 3 is used for providing driving force; the electromagnetic clutch 4 is fixedly connected with a driving shaft of the driving motor 3; the hammer head retracting and releasing mechanism 5 is connected with a driving shaft of the driving motor 3 through an electromagnetic clutch 4, and the hammer head retracting and releasing mechanism 5 is used for automatically retracting and releasing the hammer head mechanism 2 through a cable so as to prevent the hammer head mechanism 2 from impacting suspension parts for the second time.
The hammer head retracting mechanism 5 and the driving shaft of the driving motor 3 can be connected or disconnected through the electromagnetic clutch 4, when the electromagnetic clutch 4 controls the hammer head retracting mechanism 5 and the driving motor 3 to be disconnected, the hammer head retracting mechanism 5 is not driven by the driving motor 3, and the hammer head retracting mechanism 5 can automatically retract and release the hammer head mechanism 2 through a cable so as to prevent the hammer head mechanism 2 from impacting suspension parts for the second time; when the electromagnetic clutch 4 controls the hammer head retracting mechanism 5 and the driving motor 3 to be closed, the driving motor 3 drives the hammer head retracting mechanism 5 to rotate reversely until the hammer head mechanism 2 returns to the impact height again, so that the purpose of lifting the hammer head is achieved, and the next impact test is started again. Therefore, the suspension part impact test stand is compact in structure, the automatic retraction and release of the hammer head mechanism 2 can be realized through the hammer head retraction and release mechanism 5, the secondary impact of the hammer head mechanism on the suspension part is also prevented, and the automatic strength impact test of the hammer head mechanism 2 on the suspension part can be reliably and effectively realized.
Referring to fig. 3 and 4, in the embodiment of the present invention, the hammer head retracting mechanism 5 includes a wire roller structure 50, a transmission shaft 51, a return spring 52, a reverse rotation self-locking structure 53, and a secondary impact prevention self-locking structure 54; the thread rolling structure 50 comprises a thread rolling main body 500 wound with a cable, a first thread rolling end cover 501 and a second thread rolling end cover 502 arranged at two ends of the thread rolling main body 500; the transmission shaft 51 comprises a first transmission shaft 510 connected to the first reel end cover 501 close to the electromagnetic clutch 4 and a second transmission shaft 511 in driving connection with the driving shaft of the driving motor 3 through the electromagnetic clutch 4, and the second transmission shaft 511 is sleeved in the first transmission shaft 510; the second transmission shaft 511 is arranged on the wire roller body 500, the first wire roller end cover 501 and the second wire roller end cover 502. The return spring 52 is arranged on the second wire roller end cover 502 far away from the electromagnetic clutch 4; the reverse rotation self-locking structure 53 is arranged on the second transmission shaft 511 and is connected to the first thread roller end cover 501 close to the electromagnetic clutch 4; the secondary impact preventing self-locking structure 54 is arranged on the second transmission shaft 511 and connected to the second thread roller end cover 502; the reverse rotation self-locking structure 53 drives the second transmission shaft 511 to drive the secondary impact prevention self-locking structure 54 to rotate, so that the secondary impact prevention self-locking structure 54 limits the second thread roller end cover 502 to rotate.
When the electromagnetic clutch 4 controls the hammer head retraction mechanism 5 and the driving motor 3 to be disconnected, the second transmission shaft 511 is not driven by the driving motor 3, at the moment, the hammer head mechanism 2 can be automatically released and descended due to the action of gravity, at the moment, the wire roller main body 500 rotates along with the cable in the positive direction, the wire roller main body 500 rotates in the positive direction to drive the return spring 52 to rotate, meanwhile, the first wire roller end cover 501 also drives the first wire roller end cover to rotate, and at the moment, the reverse rotation self-locking structure 53 does not drive the second transmission shaft 511; when the hammerhead mechanism impacts the suspension parts to rebound upwards, so that the cable wound on the wire roller main body 500 is loosened, at the moment, the return spring 52 can rapidly drive the wire roller main body 500 to rotate reversely and tighten the cable, so as to prevent the cable from knotting on the wire roller main body 500; in the process of reversing the wire roller main body 500, the reverse rotation self-locking structure 53 drives the second transmission shaft 511 to rotate, so that the secondary impact preventing self-locking structure 54 rotates, and the secondary impact preventing self-locking structure 54 limits the second wire roller end cover 502 to rotate; at the moment, the hammer head mechanism 2 rebounds due to the cable and starts to impact downwards, the wire roller main body 500 recovers to rotate forwards again, the second wire roller end cover 502 is limited to rotate, the secondary impact preventing self-locking structure 54 starts to drive the second transmission shaft 511 to rotate backwards, the second transmission shaft 511 rotates backwards and is limited by the electromagnetic clutch 4, and therefore the whole hammer head retracting mechanism 5 is limited to rotate, automatic retraction and release of the hammer head mechanism 2 can be achieved through the hammer head retracting mechanism 5, secondary impact of the hammer head mechanism on suspension parts is prevented, and automatic strength impact tests of the hammer head mechanism 2 on the suspension parts can be achieved reliably and effectively.
Optionally, a first slot 5010 is formed in the first thread roller end cover 501; the counter-rotating self-locking structure 53 comprises a first ratchet wheel 530 connected to the second transmission shaft 511 and arranged in the first slot 5010, and a plurality of first pawls 531 connected to the first thread roller cover 501; the circumference of the first ratchet 530 is in a gear shape, and the plurality of first pawls 531 are disposed at the circumference of the first ratchet 530.
When the hammer mechanism 2 is automatically released and descends under the action of gravity, the wire roller body 500 rotates forward along with the cable, the first pawls 531 rotate along with the wire roller body 500, the moving direction of the first pawls 531 is the same as the direction of the gear-shaped gaps on the circumference of the first ratchet 530, and the first pawls 531 do not drive the first ratchet 530 to rotate, so that the driving force is not transmitted to the second transmission shaft 511 when the wire roller body 500 rotates forward. When the wire roller body 500 rotates reversely, the plurality of first pawls 531 rotate along with the wire roller body 500, the moving direction of the plurality of first pawls 531 is opposite to the direction of the gear-shaped gap on the circumference of the first ratchet 530, the first pawls 531 drive the first ratchet 530 to rotate, the first ratchet 530 rotates to drive the second transmission shaft 511 to rotate, and therefore, the driving force is transmitted to the second transmission shaft 511 when the wire roller body 500 rotates reversely.
Optionally, in order to facilitate the plurality of first pawls 531 to act on the first ratchet 530, the reverse rotation self-locking mechanism 53 further includes a plurality of pawl springs 532, one end of each pawl spring 532 is connected to the first pawl 531, and the other end of each pawl spring 532 is fixed to the first thread roller end cap 501; wherein the plurality of pawl springs 532 matches the number of the plurality of first pawls 531. Optionally, in order to save the production cost, the first pawls 531 and the pawl springs 532 are provided in two numbers, and the two first pawls 531 are symmetrically arranged along the second transmission shaft 511, so that it can be ensured that the first ratchet 530 is driven more efficiently by the two first pawls 531 arranged symmetrically.
Referring to fig. 5, in the embodiment of the present invention, a second groove 5020 is formed in the second thread roller end cap 502, and the circumference of the second groove 5020 is in a gear shape; the secondary impact prevention self-locking structure 54 comprises a second ratchet wheel 540 connected to the second transmission shaft 511 and arranged in the second groove 5020, and a plurality of second pawls 541 rotatably arranged on the second ratchet wheel 540 in the circumferential direction through pin shafts; the plurality of second pawls 541 are engaged with the second groove 5020 at a circumferential gear position.
In the process of the reverse rotation of the thread roller body 500, the first ratchet wheel 530 rotates to drive the second transmission shaft 511 to rotate, at this time, the second transmission shaft 511 drives the second ratchet wheel 540 to rotate, the second pawls 541 rotate under the drive of the second ratchet wheel 540 and are connected by the pin shaft in a rotating manner to extend outwards under the action of inertia force, and in order to ensure that one of the second pawls 541 can extend outwards, more than eight second pawls 541 are provided; at this time, the second ratchet 540 is extended outward and then clamped at the circumferential gear of the second groove 5020, so that the second thread roller end cap 502 can be clamped to limit the rotation of the second thread roller end cap, and at this time, the entire hammer head retracting mechanism 5 is integrally limited to rotate.
Optionally, in order to ensure that the driving motor 3, the hammer head retracting mechanism 5, the hammer head mechanism 2 and the suspension part can be integrally supported; the base 1 comprises a first base 10 supported by the driving motor 3 and the hammer head retracting mechanism 5, a second base 11 supported by the hammer head mechanism 2, and a third base 12 supported by suspension parts; the first base 10, the second base 11, and the third base 12 are connected by a connecting rod 13. Optionally, the first base 10 includes a support plate 100 connected to the connecting rod 13, and two opposite brackets 101 disposed on the support plate 100, the driving shaft of the driving motor 3 penetrates through the brackets 101, the hammer head retracting mechanism 5 is disposed between the two brackets 101, and the second transmission shaft 511 is connected to the brackets 101 through a bearing.
Optionally, in order to enable the impact area of the hammer head mechanism 2 on the suspension component to be adjustable, the hammer head mechanism 2 includes a hammer head 20 connected to the second base 11 through a thread, and the hammer head 20 is connected to the wire roller body 500 through a cable; optionally, in order to make the weight of the hammer head mechanism 2 to the suspension invisible to impact adjustable, the hammer head mechanism 2 further includes a counterweight 21 connected to the second base 11 by bolts.
According to the suspension part impact test stand provided by the embodiment of the invention, the electromagnetic clutch 4 can be used for connecting or disconnecting the hammer head retraction mechanism 5 and the driving shaft of the driving motor 3, when the electromagnetic clutch 4 controls the hammer head retraction mechanism 5 and the driving motor 3 to be disconnected, the hammer head retraction mechanism 5 is not driven by the driving motor 3, at the moment, the wire roller main body 500 rotates forwards along with the cable, the wire roller main body 500 rotates forwards to drive the return spring 52 to rotate, and simultaneously, the first wire roller end cover 501 is driven to rotate, at the moment, the first pawls 531 rotate along with the wire roller main body 500, at the moment, the moving direction of the first pawls 531 is the same as the direction of the gear-shaped gap on the circumference of the first ratchet wheel 530, at the moment, the first pawls do not drive the first ratchet wheel 530 to rotate, and therefore, when the wire roller main body 500 rotates forwards, the driving force cannot be transmitted. When the wire roller body 500 rotates reversely, the plurality of first pawls 531 rotate along with the wire roller body 500, the moving direction of the plurality of first pawls 531 is opposite to the direction of the gear-shaped gap on the circumference of the first ratchet 530, the first pawls 531 drive the first ratchet 530 to rotate, the first ratchet 530 rotates to drive the second transmission shaft 511 to rotate, and therefore, the driving force is transmitted to the second transmission shaft 511 when the wire roller body 500 rotates reversely.
In the process of the reverse rotation of the thread roller body 500, the first ratchet wheel 530 rotates to drive the second transmission shaft 511 to rotate, at this time, the second transmission shaft 511 drives the second ratchet wheel 540 to rotate, the second pawls 541 rotate under the drive of the second ratchet wheel 540 and are connected by the pin shaft in a rotating manner to extend outwards under the action of inertia force, and in order to ensure that one of the second pawls 541 can extend outwards, more than eight second pawls 541 are provided; at this time, the second ratchet 540 is extended outward and then clamped at the circumferential gear of the second groove 5020, so that the second thread roller end cap 502 can be clamped to limit the rotation of the second thread roller end cap, and at this time, the entire hammer head retracting mechanism 5 is integrally limited to rotate.
When the electromagnetic clutch 4 controls the hammer head retracting mechanism 5 and the driving motor 3 to be closed, the driving motor 3 drives the hammer head retracting mechanism 5 to rotate reversely until the hammer head mechanism 2 returns to the impact height again, so that the purpose of lifting the hammer head is achieved, and the next impact test is started again. Therefore, the suspension part impact test stand is compact in structure, the automatic retraction and release of the hammer head mechanism 2 can be realized through the hammer head retraction and release mechanism 5, the secondary impact of the hammer head mechanism on the suspension part is also prevented, and the automatic strength impact test of the hammer head mechanism 2 on the suspension part can be reliably and effectively realized.
In the description of the present invention, it should be noted that the terms "one end", "on", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are intended to be inclusive and mean, for example, that there may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, 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.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A suspension component impact test stand, comprising:
a base (1);
the hammer head mechanism (2) is arranged on the base (1), and the hammer head mechanism (2) is used for impacting suspension parts;
the driving motor (3) is arranged on the base (1), and the driving motor (3) is used for providing driving force;
an electromagnetic clutch (4) connected to a drive shaft of the drive motor (3);
the hammer head retracting mechanism (5) is connected with a driving shaft of the driving motor (3) through the electromagnetic clutch (4), and the hammer head retracting mechanism (5) is used for automatically retracting and releasing the hammer head mechanism (2) through a cable so as to prevent the hammer head mechanism (2) from impacting suspension parts for the second time.
2. The suspension component impact test stand according to claim 1, wherein the hammer head retracting mechanism (5) comprises:
the wire roller structure (50) comprises a wire roller main body (500) wound with a cable, a first wire roller end cover (501) and a second wire roller end cover (502) which are arranged at two ends of the wire roller main body (500);
the transmission shaft (51) comprises a first transmission shaft (510) connected to the first reel end cover (501) close to the electromagnetic clutch (4) and a second transmission shaft (511) in driving connection with a driving shaft of the driving motor (3) through the electromagnetic clutch (4), and the second transmission shaft (511) is sleeved in the first transmission shaft (510); the second transmission shaft (511) penetrates through the wire roller main body (500), the first wire roller end cover (501) and the second wire roller end cover (502);
the return spring (52) is arranged on the second wire roller end cover (502) far away from the electromagnetic clutch (4);
the reverse rotation self-locking structure (53) is arranged on the second transmission shaft (511) and is connected to the first thread roller end cover (501) close to the electromagnetic clutch (4);
the secondary impact prevention self-locking structure (54) is arranged on the second transmission shaft (511) and is connected to the second wire roller end cover (502) far away from the electromagnetic clutch (4);
the reverse rotation self-locking structure (53) drives the second transmission shaft (511) to drive the secondary impact prevention self-locking structure (54) to rotate, so that the secondary impact prevention self-locking structure (54) limits the second thread roller end cover (502) to rotate.
3. The suspension component impact test stand of claim 2, wherein said first wire roller end cap (501) has a first recess (5010) therein;
the reverse rotation self-locking structure (53) comprises a first ratchet wheel (530) connected to the second transmission shaft (511) and arranged in the first groove (5010), and a plurality of first pawls (531) connected to the first thread roller end cover (501); the circumference of the first ratchet wheel (530) is in a gear shape, and the first pawls (531) are arranged on the circumference of the first ratchet wheel (530) in the gear shape.
4. The suspension component impact test stand of claim 3, wherein the counter-rotating self-locking mechanism (53) further comprises a plurality of pawl springs (532), one end of the pawl springs (532) is connected with the first pawl (531), and the other end of the pawl springs (532) is fixed on the first wire roller end cover (501); wherein the number of the plurality of pawl springs (532) matches the number of the plurality of first pawls (531).
5. The suspension component impact test stand according to claim 4, wherein said first pawls (531) and said pawl springs (532) are provided in two, and two of said first pawls (531) are symmetrically disposed along said second transmission shaft (511).
6. The suspension component impact test stand of claim 2, wherein a second groove (5020) is formed in the second wire roller end cover (502), and the circumference of the second groove (5020) is in a gear shape;
the secondary impact preventing self-locking structure (54) comprises a second ratchet wheel (540) connected to the second transmission shaft (511) and arranged in the second groove (5020), and a plurality of second pawls (541) which are arranged on the second ratchet wheel (540) in the circumferential direction in a rotating mode through pin shafts; the second pawls (541) are clamped at the circumferential gear position of the second groove (5020).
7. The suspension component impact test stand according to claim 2, wherein the base (1) includes a first base (10) supported by the driving motor (3) and the hammer head retracting mechanism (5), a second base (11) supported by the hammer head mechanism (2), and a third base (12) supported by the suspension component; the first base (10), the second base (11) and the third base (12) are connected through a connecting rod (13).
8. The suspension component impact test stand according to claim 7, wherein the first base (10) comprises a support plate (100) connected to the connecting rod (13) and two oppositely arranged brackets (101) arranged on the support plate (100), the driving shaft of the driving motor (3) is arranged through the brackets (101), the hammer head retracting mechanism (5) is arranged between the two brackets (101), and the second transmission shaft (511) is connected with the brackets (101) through a bearing.
9. The suspension component impact test stand according to claim 7, wherein the hammer head mechanism (2) comprises a hammer head (20) connected to the second base (11) by a screw, the hammer head (20) being connected to the wire roller body (500) by a cable.
10. The suspension component impact test stand of claim 9, wherein the hammer head mechanism (2) further comprises a counterweight (21) bolted to the second base (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010791591.4A CN111896206B (en) | 2020-08-07 | 2020-08-07 | Suspension part impact test stand |
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| CN202010791591.4A CN111896206B (en) | 2020-08-07 | 2020-08-07 | Suspension part impact test stand |
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| CN111896206A true CN111896206A (en) | 2020-11-06 |
| CN111896206B CN111896206B (en) | 2021-06-11 |
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