CN107389248B - Impact test mechanism and impact test board - Google Patents
Impact test mechanism and impact test board Download PDFInfo
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- CN107389248B CN107389248B CN201710756126.5A CN201710756126A CN107389248B CN 107389248 B CN107389248 B CN 107389248B CN 201710756126 A CN201710756126 A CN 201710756126A CN 107389248 B CN107389248 B CN 107389248B
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- 238000009863 impact test Methods 0.000 title claims abstract description 36
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 8
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0052—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to impact
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Abstract
The application discloses an impact testing mechanism and an impact testing table, wherein the impact testing mechanism comprises: a base; the middle part of the arm lever is rotatably arranged on the base, the arm lever comprises a first end and a second end, and the first end of the arm lever is provided with a structure to be impacted; and the tension sensor is arranged at the second end of the arm lever, one end of the tension sensor is connected with the second end of the arm lever, and the other end of the tension sensor is connected with the base. According to the impact testing mechanism, the lever principle is adopted, so that the pressure of a machine to be tested on a force arm rod is converted into the tension of the force arm rod on a tension sensor, and compared with the structure that a sensor is directly arranged on the structure to be impacted, the structure is simpler and more convenient in structural design and better in reliability.
Description
Technical Field
The application relates to a test tool, in particular to an impact test mechanism and an impact test table.
Background
The existing electric tools or fuel tools (such as pile drivers, oil picks, electric picks and other machines) have the impact function, and the pile drivers, the oil picks, the electric picks and the like only know that the impact force is large, but no special equipment is used for testing the impact force of each machine.
Disclosure of Invention
The present application addresses the above-described problems by providing an impact test mechanism and an impact test stand capable of measuring the impact force of a device.
The technical scheme adopted by the application is as follows:
an impact testing mechanism, comprising:
a base;
the middle part of the arm lever is rotatably arranged on the base, the arm lever comprises a first end and a second end, and the first end of the arm lever is provided with a structure to be impacted; and
and the tension sensor is arranged at the second end of the arm lever, one end of the tension sensor is connected with the second end of the arm lever, and the other end of the tension sensor is connected with the base.
The working principle of the impact testing mechanism is as follows: the working part of the machine to be tested aims at the structure to be impacted, impact force is applied to the working part, the arm rod can rotate relative to the base (similar to a teeterboard structure) after receiving the impact force, so that the second end of the arm rod can rotate, tension force can be applied to the tension sensor when the second end of the arm rod moves, the tension force can be measured through the tension sensor, and the impact force corresponding to the machine to be tested can be obtained through conversion of moment.
According to the impact testing mechanism, the lever principle is adopted, so that the pressure of a machine to be tested on a force arm rod is converted into the tension of the force arm rod on a tension sensor, and compared with the structure that a sensor is directly arranged on the structure to be impacted, the structure is simpler and more convenient in structural design and better in reliability.
The middle part of the arm lever is rotatably arranged on the base, and the rotation point is not limited to be the middle of the arm lever, but a certain area between the first end and the second end is the rotation point. The power arm rod can be positioned in the middle between the structure to be impacted and the tension sensor in practical use, the initial position of the power arm rod is horizontal, the impact direction of the impact force is vertical to the power arm rod, the tension sensor is also vertical to the power arm rod, conversion is not needed after the power arm rod is arranged, and the maximum tensile force born by the tension sensor is equal to the impact force of the machine to be tested on the power arm rod.
The tension sensor can be any existing tension sensor (such as a push-pull tension meter), and can also be in a structure form that a tension member is attached with a strain gauge.
Optionally, the device further comprises a controller electrically connected with the tension sensor and a display electrically connected with the controller.
The controller obtains an impact force value through conversion according to the signal of the tension sensor, and the impact force value is directly displayed on a display.
Optionally, the base comprises a bottom plate and a mounting frame fixed on the bottom plate, and the arm rod is rotatably mounted on the mounting frame through a rotating shaft; one end of the tension sensor is in running fit with the second end of the arm lever, and the other end of the tension sensor is in running fit with the base.
The tension sensor both ends respectively with power armed lever and base normal running fit, set up like this and can guarantee as far as possible that tension sensor numerical value is accurate and reliable work.
Optionally, a first groove is formed in the lower portion of the second end of the force arm rod, and a first pin shaft is installed on the first groove; the base is provided with a second groove corresponding to the first groove, and a second pin shaft is arranged on the second groove; one end of the tension sensor is sleeved on the first pin shaft, and the other end of the tension sensor is sleeved on the second pin shaft.
Optionally, the structure to be impacted is a pressed groove arranged at the upper part of the first end of the arm lever or a pressed impact head arranged at the upper part of the first end of the arm lever.
When the structure to be impacted is a pressed groove, the electric pick and the oil pick can be tested by a waiting testing machine, so that the impact piece can be positioned conveniently; when the structure to be impacted is the pressed impact head, the pile driver can be tested by waiting for the testing machine, and at the moment, the guide sleeve of the pile driver can be sleeved on the pressed impact head, so that the pile driver can be conveniently tested.
Optionally, the structure of waiting to strike is for setting up the pressurized impact head on the first end upper portion of arm pole, the lower extreme that pressurized impact head has the projection, the lateral wall of projection has first locating hole, the first end upper portion of arm pole has the spacing groove, the first end lateral wall of arm pole have with the second locating hole of spacing groove intercommunication, the projection embedding of pressurized impact head the spacing groove, the projection is fixed on the spacing groove through the locating pin that passes second locating hole and first locating hole in proper order.
The cooperation of projection and spacing groove can make things convenient for the location of pressurized impact head, and pressurized impact head installation dismantles comparatively conveniently.
Optionally, the structure of waiting to strike is for setting up the pressurized impact head on the first end upper portion of power arm lever, and pressurized impact head up end has the ball groove, installs the ball on the ball groove, the ball is including the portion that exposes that is located the ball groove outside, and the upper portion of ball portion of exposing has the plane.
The ball can rotate relative to the ball groove, and the upper part of the exposed part of the ball is provided with a flat surface, so that the ball can be self-adaptively adjusted in angle when being stressed, and the ball can be reliably matched with the end face of the impact piece of the machine to be tested.
Optionally, the ball bearing ball impact device further comprises a connecting sleeve, wherein the connecting sleeve is sleeved on the exposed part of the ball bearing and is detachably connected with the end face of the pressure impact head.
With this structure, it is possible to adapt a pile driver without a guide sleeve.
Optionally, the ball bearing device further comprises a stress guide post detachably connected with the upper end face of the pressure impact head, wherein the lower end face of the stress guide post is provided with an avoidance groove matched with the exposed part of the ball bearing, the outer side wall of the lower end of the stress guide post is provided with a connecting ring, and the connecting ring is abutted against the upper end face of the pressure impact head and connected with the upper end face of the pressure impact head through a fastener.
This construction is suitable for pile drivers with guide sleeves. The stress guide post is used for extending into the guide sleeve of the pile driver so as to transmit the impact force to the compression impact head; the stress guide posts are detachably connected to the compression impact head, and because the guide sleeves of different pile drivers are different in size, the stress guide posts with different sizes can be replaced in a detachable fit mode, so that the impact testing mechanism is higher in applicability.
The application also discloses an impact test board, which comprises a fixing mechanism and the impact test mechanism, wherein the fixing mechanism is used for fixing a machine to be tested, so that an impact part of the machine to be tested is matched with the structure to be impacted of the force arm lever.
The beneficial effects of the application are as follows: the working part of the machine to be tested aims at the structure to be impacted, impact force is applied to the working part, the arm rod rotates relative to the base after receiving the impact force, so that the second end of the arm rod rotates, tension force can be applied to the tension sensor when the second end of the arm rod moves, the tension force can be measured through the tension sensor, and the impact force corresponding to the machine to be tested can be obtained through conversion of moment. According to the impact testing mechanism, the lever principle is adopted, so that the pressure of a machine to be tested on a force arm rod is converted into the tension of the force arm rod on a tension sensor, and compared with the structure that a sensor is directly arranged on the structure to be impacted, the structure is simpler and more convenient in structural design and better in reliability.
Description of the drawings:
FIG. 1 is a schematic view of the structure of the impact test stand of the present application after the impact head is removed;
FIG. 2 is a schematic view of the impact test stand of the present application;
FIG. 3 is a schematic structural view of an impact testing mechanism;
FIG. 4 is an exploded view of the compression impact head, ball and force bearing guide post;
FIG. 5 is a partial exploded view of the securing mechanism;
FIG. 6 is a partial exploded view of the securing mechanism at another angle;
FIG. 7 is a schematic view of the structure of the compression impact head, ball and adapter;
fig. 8 is an exploded view of the compression impact head, ball and adapter sleeve.
The reference numerals in the drawings are as follows:
1. a base; 2. a force arm lever; 3. a tension sensor; 4. a first end; 5. a second end; 6. a limit groove; 7. a first groove; 8. a first pin; 9. a second groove; 10. a second pin; 11. a mounting frame; 12. a rotating shaft; 13. a bottom plate; 14. a controller; 15. a display; 16. a fixing seat; 17. a fixing plate; 18. a clamping assembly; 19. a through hole; 20. a V-shaped port; 21. a clamping block; 22. a screw; 23. clamping the side plates; 24. a second driving member; 25. lifting columns; 26. a rack; 27. a first recess; 28. a locking piece; 29. a drive shaft; 30. a drive gear; 31. a drive shaft mounting seat; 32. a pressurized impact head; 33. a convex column; 34. a first positioning hole; 35. a ball; 36. connecting sleeves; 37. a stress guide post; 38. a connecting ring; 39. a turbine; 40. a worm; 41. a first driving member; 42. a bolt; 43. a sliding groove; 44. a rack slot; 45. a second notch; 46. a connection end; 47. a flat surface.
The specific embodiment is as follows:
the present application will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, 2, 3, 4 and 5, an impact test stand includes a fixing mechanism and an impact test mechanism, where the fixing mechanism is used to fix a machine to be tested, so that an impact part of the machine to be tested cooperates with the impact test mechanism to perform an impact force test.
As shown in fig. 1, 2 and 3, in the present embodiment, the impact test mechanism includes:
a base 1;
the middle part of the arm lever 2 is rotatably arranged on the base 1, the arm lever 2 comprises a first end 4 and a second end 5, and the first end 4 of the arm lever 2 is provided with a structure to be impacted; and
and a tension sensor 3 is arranged at the second end 5 of the arm lever 2, one end of the tension sensor 3 is connected with the second end 5 of the arm lever 2, and the other end is connected with the base 1.
The working principle of the impact testing mechanism is as follows: the working part of the machine to be tested is aligned to the structure to be impacted, impact force is applied to the working part, the arm lever 2 can rotate relative to the base 1 after receiving the impact force (similar to a teeterboard structure), so that the second end 5 of the arm lever 2 rotates, tension force can be applied to the tension sensor 3 when the second end 5 of the arm lever 2 moves, the tension force can be measured through the tension sensor 3, and the impact force corresponding to the machine to be tested can be obtained through conversion of moment.
According to the impact testing mechanism, the lever principle is adopted, so that the pressure of a machine to be tested on the force arm lever 2 is converted into the tension of the force arm lever 2 on the tension sensor 3, and compared with the structure that a sensor is directly arranged on the structure to be impacted, the structure is simpler and more convenient in structural design and better in reliability.
The middle part of the arm lever 2 is rotatably mounted on the base 1, and the rotation point is not limited to be the middle of the arm lever 2, but a certain area between the first end 4 and the second end 5 is the rotation point. The rotation shaft 12 of the force arm rod 2 can be positioned in the middle between the structure to be impacted and the tension sensor 3 in practical use, the initial position of the force arm rod 2 is horizontal, the impact direction of impact force is vertical to the force arm rod 2, the tension sensor 3 is also vertical to the force arm rod 2, and after the arrangement, conversion is not needed, and the maximum tensile force born by the tension sensor 3 is equal to the impact force of a machine to be tested on the force arm rod 2.
The tension sensor 3 of the application can be any existing tension sensor 3 (such as a push-pull tension meter with a number display) or can be in a structure form that a tension member is attached with a strain gauge.
As shown in fig. 1, 2 and 3, in this embodiment, a controller 14 electrically connected to the tension sensor 3, and a display 15 electrically connected to the controller 14 are further included. The controller 14 obtains an impact force value by conversion from the signal of the tension sensor 3, and directly displays the impact force value on the display 15.
As shown in fig. 1, 2 and 3, in the present embodiment, the base 1 includes a base plate 13 and a mounting frame 11 fixed to the base plate 13, and the arm lever 2 is rotatably mounted on the mounting frame 11 through a rotation shaft 12; one end of the tension sensor 3 is in running fit with the second end 5 of the arm lever 2, and the other end is in running fit with the base 1. The two ends of the tension sensor 3 are respectively in running fit with the force arm rod 2 and the base 1, so that the numerical value of the tension sensor 3 can be ensured to be accurate and reliable to work as far as possible.
As shown in fig. 1, 2 and 3, in this embodiment, the lower part of the second end 5 of the arm 2 has a first groove 7, and a first pin 8 is mounted on the first groove 7; the base 1 is provided with a second groove 9 corresponding to the first groove 7, and a second pin shaft 10 is arranged on the second groove 9; one end of the tension sensor 3 is sleeved on the first pin shaft 8, and the other end is sleeved on the second pin shaft 10.
As shown in fig. 1 and 2, in the present embodiment, the structure to be impacted is a pressure impact head 32 provided at an upper portion of the first end 4 of the arm 2. When the structure to be impacted is the pressed impact head 32, the pile driver waiting test machine can be tested, and at the moment, the guide sleeve of the pile driver can be sleeved on the pressed impact head 32, so that the pile driver waiting test machine can be conveniently tested. In other embodiments, the structure to be impacted may be a pressed slot disposed on the upper portion of the first end 4 of the arm lever 2, and when the structure to be impacted is a pressed slot, the electric pick and the oil pick can be tested by waiting for a testing machine, so as to facilitate positioning of the impact member.
As shown in fig. 1 and 4, in this embodiment, the structure to be impacted is a compressed impact head 32 disposed on the upper portion of the first end 4 of the arm 2, the lower end of the compressed impact head 32 has a protruding column 33, the side wall of the protruding column 33 has a first positioning hole 34, the upper portion of the first end 4 of the arm 2 has a limiting slot 6, the side wall of the first end 4 of the arm 2 has a second positioning hole communicating with the limiting slot 6, the protruding column 33 of the compressed impact head 32 is embedded into the limiting slot 6, and the protruding column 33 is fixed on the limiting slot 6 by a positioning pin passing through the second positioning hole and the first positioning hole 34 in sequence. The cooperation of projection 33 and spacing groove 6 can make things convenient for the location of pressurized impact head 32, and pressurized impact head 32 installation dismantles comparatively conveniently.
As shown in fig. 2, in the present embodiment, the pressure-receiving impact head 32 has a ball groove on its upper end surface, on which the ball 35 is mounted, the ball 35 including an exposed portion outside the ball groove, and the upper portion of the exposed portion of the ball 35 has a flat surface 47. The ball 35 can rotate relative to the ball groove, and the upper part of the exposed part of the ball 35 is provided with a flat surface 47, so that the ball 35 can be self-adaptively adjusted in angle when being stressed, and thus the ball 35 is reliably matched with the end face of an impact piece of a machine to be tested.
As shown in fig. 7 and 8, in this embodiment, the device further includes a connecting sleeve 36, and the connecting sleeve 36 is sleeved on the exposed portion of the ball 35 and detachably connected with the end face of the pressure impact head 32. With this structure, it is possible to adapt a pile driver without a guide sleeve.
As shown in fig. 3 and 4, in this embodiment, the device further includes a stress guide post 37 detachably connected to the upper end surface of the pressure impact head 32, the lower end surface of the stress guide post 37 has a recess that mates with the exposed portion of the ball 35, and the outer side wall of the lower end of the stress guide post 37 has a connection ring 38, where the connection ring 38 abuts against the upper end surface of the pressure impact head 32 and is connected by a fastener.
This construction is suitable for pile drivers with guide sleeves. The stress guide post 37 is used for extending into the guide sleeve of the pile driver so as to transmit the impact force to the compression impact head 32; the stress guide pillar 37 can be detachably connected to the compression impact head 32, and because the guide sleeves of different pile drivers are different in size, the stress guide pillar 37 with different sizes can be replaced in a detachable fit mode, so that the impact testing mechanism is higher in applicability.
When in use, according to the different machines to be tested, whether the connecting sleeve 36 or the stress guide post 37 is installed on the pressure impact head 32 is selected, and if so, the connecting sleeve 36 or the stress guide post 37 is installed according to the requirement.
In this embodiment, there are a plurality of stress guide posts 37, and the length or the outer diameter of each stress guide post 37 is different, but the size of the connecting ring 38 that the stress guide posts 37 and the compressed impact head 32 cooperate with is the same.
As shown in fig. 1, 2, 5 and 6, the fixing mechanism includes:
a base 1;
the lifting assembly is arranged on the base 1;
the fixed plate 17 is arranged at the upper part of the lifting assembly, and the upper and lower positions of the fixed plate 17 are adjusted by the lifting assembly; and
at least one set of clamping assemblies 18, mounted on the fixed plate 17, for clamping the machine to be tested.
The clamping assembly 18 is matched with the fixing plate 17 and used for fixing the machine to be tested; the up-down position of the fixed plate 17 can be adjusted by arranging the lifting assembly, namely, the machine to be tested with different sizes can be adapted.
The fixing mechanism is used for fixing the machine to be tested, so that the impact part of the machine to be tested is matched with the structure to be impacted of the force arm rod 2.
As shown in fig. 1, 2, 5 and 6, in the present embodiment, the lifting assembly includes:
two parallel fixing seats 16 which are arranged at intervals, wherein the fixing seats 16 are provided with vertically arranged sliding grooves 43, the side walls of the sliding grooves 43 are provided with vertically arranged rack grooves 44, and the outer side walls of the fixing seats 16 are provided with first notches 27 communicated with the rack grooves 44;
the two lifting columns 25, the side walls of the lifting columns 25 are fixedly provided with racks 26, the lifting columns 25 are in sliding fit with the sliding grooves 43, the racks 26 are in sliding fit with the rack grooves 44, and the fixing plate 17 is fixed with the upper ends of the two lifting columns 25; and
a driving shaft 29 is rotatably mounted on the base 1, and driving gears 30 are mounted at both ends of the driving shaft 29, and the driving gears 30 are disposed at the corresponding first recesses 27 to be engaged with the corresponding racks 26.
The lifting column 25 is slidably disposed on the fixed seat 16 by providing the sliding groove 43 and the rack groove 44, and is not rotated in the circumferential direction; when the driving shaft 29 rotates, the two driving gears 30 can be driven to rotate, and the driving gears 30 are meshed with the racks 26, so that the two lifting columns 25 ascend or descend synchronously.
As shown in fig. 1, 2, 5 and 6, in this embodiment, the base 1 further includes a drive shaft mount 31 fixed to the base plate 13, and the drive shaft 29 is rotatably mounted on the drive shaft mount 31; the lifting assembly further comprises a drive assembly for rotating the drive shaft 29.
As shown in fig. 5 and 6, in the present embodiment, the driving assembly includes:
a turbine 39 provided on the drive shaft 29;
a worm 40 rotatably mounted on the base 1, the worm 40 being engaged with the worm wheel 39;
the first driving member 41 is configured to drive the worm 40 to rotate, and the first driving member 41 is a first hand wheel or a first driving motor.
In other embodiments, the driving assembly may include:
a first transmission gear provided on the drive shaft 29;
the second transmission gear is rotatably arranged on the base 1 and is directly meshed with the first transmission gear or meshed with the first transmission gear through a gear set; and
the first driving member 41 is configured to drive the second transmission gear to rotate, and the first driving member 41 is a first hand wheel or a first driving motor.
Lifting of the lifting column 25 can be manually controlled by the first hand wheel, and lifting of the lifting column 25 can be electrically controlled by the first driving motor.
As shown in fig. 5 and 6, in the present embodiment, the fixing base 16 has a second notch 45 that is communicated with the sliding groove 43, one side of the second notch 45 is provided with a locking piece 28, the inner side wall of the locking piece 28 is matched with the inner side wall of the sliding groove 43, one end of the locking piece 28, which is connected with the second notch 45, is a connection end 46, and one end of the locking piece 28, which is far away from the connection end 46, is connected with the fixing base 16 through a bolt 42.
The term "the inner side wall of the locking piece 28 is matched with the inner side wall of the sliding groove 43" refers to that if the inner side wall of the sliding groove 43 is circular arc, the inner side wall of the locking piece 28 is circular arc and smoothly transits with the inner side wall of the sliding groove 43, and if the inner side wall of the sliding groove 43 corresponding to the notch is a flat surface, the inner side wall of the locking piece 28 is also a flat surface.
The "second recess 45 is provided with the locking piece 28" on one side, which does not mean that the locking piece 28 and the fixing base 16 are separate two parts, but the locking piece 28 and the fixing base 16 may be integrally formed.
Through setting up the locking piece 28, when needs adjust fixed plate 17 height, unscrew bolt 42, can drive lifting column 25 through the rotation of drive shaft 29 this moment and remove the back through screwing bolt 42 in place for locking piece 28 compresses tightly lifting column 25's lateral wall, lifting column 25 receives great frictional force, can not reciprocate any more.
When there is only one set of clamping assemblies 18, the side wall of the machine to be tested is abutted against the fixed plate 17, and the other side is clamped by the clamping assemblies 18. As shown in fig. 1 and 2, in this embodiment, the clamping assemblies 18 have two sets, and the two sets of clamping assemblies 18 are disposed opposite to each other, and each set of clamping assemblies 18 includes:
a clamping side plate 23 fixed on the fixed plate 17, the clamping side plate 23 having a threaded hole;
a screw 22 engaged with the screw hole;
a clamping block 21 rotatably installed at one end of the screw 22; and
the second driving piece 24 is arranged at the other end of the screw 22, and the second driving piece 24 is used for driving the screw 22 to rotate and driving the clamping block 21 to reciprocate relative to the clamping side plate 23;
the two clamping blocks 21 of the two sets of clamping assemblies 18 are located between the two clamping side plates 23 and are disposed opposite.
The clamping block 21 is driven to move by the screw 22 so as to clamp or release the machine to be detected.
As shown in fig. 1 and 2, in the present embodiment, the second driving member 24 is a second hand wheel fixedly connected to the screw 22 or a second driving motor for driving the screw 22 to rotate; the side of the clamping block 21 remote from the corresponding clamping side plate 23 is provided with a V-shaped opening 20 (which may also be a U-shaped opening in actual use). The design of the V-shaped opening 20 or the U-shaped opening can increase the contact area between the clamping block 21 and the machine to be detected, and can better hold.
As shown in fig. 1 and 2, in the present embodiment, the fixing plate 17 has a through hole 19 for the product to pass through, and the through hole 19 is provided between the two clamping side plates 23.
The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the application, but rather is intended to cover all equivalent structures as modifications within the scope of the application, either directly or indirectly, as may be contemplated by the present application.
Claims (6)
1. An impact testing mechanism, comprising:
a base;
the middle part of the arm lever is rotatably arranged on the base, the arm lever comprises a first end and a second end, and the first end of the arm lever is provided with a structure to be impacted; and
the tension sensor is arranged at the second end of the arm lever, one end of the tension sensor is connected with the second end of the arm lever, and the other end of the tension sensor is connected with the base;
the base comprises a bottom plate and a mounting frame fixed on the bottom plate, and the arm rod is rotatably mounted on the mounting frame through a rotating shaft; one end of the tension sensor is in rotary fit with the second end of the arm lever, and the other end of the tension sensor is in rotary fit with the base;
the lower part of the second end of the force arm rod is provided with a first groove, and a first pin shaft is arranged on the first groove; the base is provided with a second groove corresponding to the first groove, and a second pin shaft is arranged on the second groove; one end of the tension sensor is sleeved on the first pin shaft, and the other end of the tension sensor is sleeved on the second pin shaft;
the structure of waiting to strike is for setting up the pressurized impact head on the first end upper portion of power armed lever, and pressurized impact head up end has the ball groove, installs the ball on the ball groove, the ball is including the exposed portion that is located the ball groove outside, and the upper portion of the exposed portion of ball has the plane.
2. The impact testing mechanism of claim 1, further comprising a controller electrically connected to the tension sensor, and a display electrically connected to the controller.
3. The impact testing mechanism of claim 1, wherein the lower end of the impact head is provided with a convex column, the side wall of the convex column is provided with a first positioning hole, the upper part of the first end of the arm rod is provided with a limiting groove, the side wall of the first end of the arm rod is provided with a second positioning hole communicated with the limiting groove, the convex column of the impact head is embedded into the limiting groove, and the convex column is fixed on the limiting groove through a positioning pin sequentially penetrating through the second positioning hole and the first positioning hole.
4. The impact testing mechanism of claim 1, further comprising a connection sleeve that is externally received on the exposed portion of the ball and removably connected to the pressurized impact head end face.
5. The impact testing mechanism of claim 4, further comprising a force-bearing guide post detachably connected to the upper end surface of the impact head, wherein the lower end surface of the force-bearing guide post has a relief groove cooperating with the exposed portion of the ball, and the outer side wall of the lower end of the force-bearing guide post has a connecting ring, and the connecting ring abuts against the upper end surface of the impact head and is connected by a fastener.
6. An impact test bench comprising a fixing mechanism and an impact test mechanism according to any one of claims 1 to 5, wherein the fixing mechanism is used for fixing a machine to be tested, so that an impact part of the machine to be tested is matched with a structure to be impacted of a force arm lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710756126.5A CN107389248B (en) | 2017-08-29 | 2017-08-29 | Impact test mechanism and impact test board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710756126.5A CN107389248B (en) | 2017-08-29 | 2017-08-29 | Impact test mechanism and impact test board |
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| CN107389248A CN107389248A (en) | 2017-11-24 |
| CN107389248B true CN107389248B (en) | 2023-11-14 |
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| CN107907258A (en) * | 2017-12-27 | 2018-04-13 | 横店集团英洛华电气有限公司 | Electric pushrod propulsion test device |
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