CN211085542U - Improved pendulum moment weighing tool for impact testing machine - Google Patents
Improved pendulum moment weighing tool for impact testing machine Download PDFInfo
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- CN211085542U CN211085542U CN201922465259.4U CN201922465259U CN211085542U CN 211085542 U CN211085542 U CN 211085542U CN 201922465259 U CN201922465259 U CN 201922465259U CN 211085542 U CN211085542 U CN 211085542U
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- flat plate
- measuring sensor
- force measuring
- plane bearing
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Abstract
The utility model discloses an improved generation impact testing machine pendulum moment frock of weighing, including base, force cell sensor and universal adjustment mechanism, the base lower extreme is provided with the support frame, and the base upper end is provided with the bracing piece, has cup jointed cylindrical recess on the bracing piece, is provided with the apron at cylindrical groove opening part, installs the level monitor who is used for monitoring the frock levelness of weighing on the apron. The support rod extends upwardly through the bottom of the cylindrical recess with the top of the support rod within the cylindrical recess. The universal adjusting mechanism comprises a plane bearing and a cylindrical flat plate, the plane bearing is connected with the top of the supporting rod, the force measuring sensor is fixed at the upper end of the cylindrical flat plate, the force measuring sensor can move on the plane bearing through the cylindrical flat plate, and a tip capable of being screwed is arranged at the upper end of the force measuring sensor. The device is provided with a universal adjusting mechanism and a horizontal monitor, is free of constraint in the horizontal direction, and is simple to operate and high in precision when horizontal and centering positioning is carried out.
Description
Technical Field
The utility model relates to a mechanics measurement test field, more specifically say, relate to an improved generation impact testing machine pendulum moment frock of weighing.
Background
In the pendulum moment measurement of the existing impact testing machine, a force measuring sensor is fixedly connected with a triangular support frame, and the whole support frame needs to be moved for positioning in the horizontal direction. When the triangular support frame integrally moves, the horizontal positioning and the centering positioning of the device have high requirements on the proficiency of operators, the levelness of the device cannot be completely guaranteed in the operation process, and particularly in the environment with poor conditions, the working efficiency can be greatly reduced.
according to the technical scheme, when the pendulum weight F is measured, when the force sensor is not aligned, an included angle between the apex of the sensor and the vertical direction is α, as shown in figure 2, the pivot A on the pendulum bears three forces, the pendulum is stressed by the gravity of the earth at the point A, the direction is vertical downward, the vertex of the sensor acts on the pendulum, the direction is alpha-degree angle from the vertical upward direction, and the acting force of the central point B of the pendulum on the pendulum is F Bat point a, the force is balanced by three forces, and in the opposite direction of force F, the force F' is the reaction force of the pendulum to the load cell, i.e. the measured value displayed in the load cell meter <1，F’>G. That is, when the sensor pair has a certain deflection angle with the vertical direction, the measured value displayed by the force-measuring sensor instrument is larger than the actual weight of the pendulum bob. The centering of the load cell is therefore influenced by lateral force factors, which directly leads to a reduction in the accuracy of the final measurement result. Secondly, besides the centering of the force cell to eliminate the influence factors of the side force, the whole weighing process The levelness of the middle load cell is also an important factor influencing the accuracy of the measurement result. When the weight of the pendulum bob is measured, if the weight is not horizontal, the force of the force measuring sensor is not true, the measured result has larger deviation with the actual value, and the accuracy of the measured result is directly influenced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model provides an improved generation impact testing machine pendulum moment frock of weighing, this device have universal adjustment mechanism and horizontal monitor to at the horizontal direction unconstrained, easy operation, precision height when carrying out level and centering location.
In order to achieve the above purpose, the utility model provides a following technical scheme: an improved pendulum moment weighing tool of an impact testing machine comprises a base, a force transducer and a universal adjusting mechanism, wherein a support frame is arranged at the lower end of the base, a support rod is arranged at the upper end of the base, a cylindrical groove is sleeved on the support rod, a cover plate is arranged at the opening of the cylindrical groove, a level monitor for monitoring the levelness of the weighing tool is installed on the cover plate, the support rod extends upwards through the bottom of the cylindrical groove, and the top of the support rod is arranged in the cylindrical groove;
The universal adjusting mechanism is arranged at the top of the supporting rod and comprises a plane bearing and a cylindrical flat plate, the plane bearing is connected with the top of the supporting rod, the cylindrical flat plate is arranged at the upper end of the plane bearing, the force measuring sensor is fixedly connected with the cylindrical flat plate, the force measuring sensor can move on the plane bearing through the cylindrical flat plate, and the top point is arranged at the upper end of the force measuring sensor.
On the basis of the scheme, the support frame is preferably connected with a lifting device for adjusting the height of the weighing tool.
On the basis of the scheme, the center is preferably in threaded connection with the force measuring sensor, and the height of the center can be adjusted in a micro-scale mode by rotating the center.
On the basis of the scheme, the center of the cover plate is preferably of a hollow structure, and the upper end of the cylindrical flat plate extends out of the cover plate.
To sum up, the utility model discloses a set up universal adjustment mechanism and make force cell sensor can move on the horizontal direction, and need not remove whole frock of weighing, eliminated the constraining force beyond the force cell sensor axial for measuring result is more accurate. Through setting up horizontal monitor, can carry out real-time supervision to the levelness of device to adjust the level with force cell sensor through adjusting universal adjustment mechanism.
The utility model is simple in operation, convenient to use, effectual, precision are high, and this measurement frock has eliminated the restraint beyond the force cell axial, has got rid of the adverse effect that measuring device is out of level and has brought simultaneously. After two adverse factors are overcome, the accuracy of the measuring result is improved, the working efficiency is greatly improved, and the method is safer and more reliable in the measuring work.
Drawings
FIG. 1 is a schematic structural diagram of a pendulum moment weighing tool of an existing impact tester;
FIG. 2 is a schematic view of a conventional pendulum bob with a force applied at a pivot point A when a load cell is not centered in a conventional apparatus;
Fig. 3 is a schematic structural view of an improved pendulum moment weighing tool of an impact tester according to an embodiment of the present invention;
Fig. 4 is an enlarged schematic structural view of a cover plate according to an embodiment of the present invention;
In the figure: the method comprises the following steps of 1-base, 2-force measuring sensor, 3-universal adjusting mechanism, 4-support frame, 5-support rod, 6-cylindrical groove, 7-cover plate, 8-horizontal monitor, 9-plane bearing, 10-cylindrical flat plate and 11-tip.
Detailed Description
Referring to fig. 3-4, the utility model provides an improved generation impact testing machine pendulum moment frock of weighing, including base 1, force cell 2 and universal adjustment mechanism 3, base 1 lower extreme is provided with support frame 4, and support frame 4 is connected with elevating gear, and elevating gear can adjust the height of frock of weighing. The upper end of the base 1 is provided with a supporting rod 5, a cylindrical groove 6 is sleeved on the supporting rod 5, an cover plate 7 is arranged at the opening of the cylindrical groove 6, the center of the cover plate 7 is of a hollow structure, and a horizontal monitor 8 is installed on the cover plate 7 and used for monitoring the levelness of the weighing tool.
The supporting rod 5 extends upwards to extend through the bottom of the cylindrical groove 6, the top of the supporting rod 5 is arranged in the cylindrical groove 6, the universal adjusting mechanism 3 is arranged at the top of the supporting rod 5, the universal adjusting mechanism 3 comprises a plane bearing 9 and a cylindrical flat plate 10, the upper end of the cylindrical flat plate 10 extends out of the cover plate 7, the plane bearing 9 is connected with the top of the supporting rod 5, the cylindrical flat plate 10 is arranged at the upper end of the plane bearing 9, the force measuring sensor 2 is fixedly connected with the cylindrical flat plate 10, the force measuring sensor 2 can move on the plane bearing 9 through the cylindrical flat plate 10, the top 11 is arranged at the upper end of the force measuring sensor, the height of the centre 11 can be adjusted slightly by rotating the centre 11, the whole weighing tool does not need to be adjusted, therefore, the levelness of the weighing device can be ensured not to change, and the consistency of the axis of the force cell 2 and the gravity direction of the pendulum bob is ensured. After interference factors in the horizontal direction and the vertical direction of the weighing tool are eliminated, measurement is carried out, and the measurement result is more accurate and reliable.
Because the force cell sensor 2 can move on the plane bearing 9, on one hand, the tip 11 can be ensured to be conveniently and accurately aligned to a pit of a pendulum bob measuring point, and on the other hand, the tip 11 is prevented from being held when the tip 11 enters the pit due to the small deviation of alignment, so that the sensor is subjected to lateral force to cause inaccurate pendulum bob moment measurement.
The utility model discloses a use method does: the weighing tool is moved to the lower end of a pendulum bob of which the moment needs to be measured, a lifting device at the lower end of a support frame 4 is adjusted, a force measuring sensor 2 is lifted to enable a tip 11 to be close to a pit of a force measuring point of the pendulum bob, and then the axis of the force measuring sensor 2 is adjusted through a universal adjusting mechanism 3 under the monitoring of a horizontal monitor 8 to enable the axis to be consistent with the gravity direction of the pendulum bob.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The utility model provides an improved generation impact testing machine pendulum moment frock of weighing which characterized in that: the device comprises a base (1), a force measuring sensor (2) and a universal adjusting mechanism (3), wherein a support frame (4) is arranged at the lower end of the base (1), a support rod (5) is arranged at the upper end of the base (1), a cylindrical groove (6) is sleeved on the support rod (5), a cover plate (7) is arranged at an opening of the cylindrical groove (6), a level monitor (8) used for monitoring the levelness of a weighing tool is installed on the cover plate (7), the support rod (5) extends upwards to extend through the bottom of the cylindrical groove (6), and the top of the support rod (5) is arranged in the cylindrical groove (6);
The universal adjusting mechanism (3) is arranged at the top of the supporting rod (5), the universal adjusting mechanism (3) comprises a plane bearing (9) and a cylindrical flat plate (10), the plane bearing (9) is connected with the top of the supporting rod (5), the cylindrical flat plate (10) is arranged at the upper end of the plane bearing (9), the force measuring sensor (2) is fixedly connected with the cylindrical flat plate (10), the force measuring sensor (2) can move on the plane bearing (9) through the cylindrical flat plate (10), and a tip (11) is arranged at the upper end of the force measuring sensor (2).
2. The improved pendulum moment weighing tool of the impact testing machine according to claim 1, characterized in that: the support frame (4) is connected with a lifting device for adjusting the height of the weighing tool.
3. The improved pendulum moment weighing tool of the impact testing machine according to claim 1, characterized in that: the center (11) is in threaded connection with the force measuring sensor (2), and the height of the center (11) can be adjusted in a micro-scale mode by rotating the center (11).
4. The improved pendulum moment weighing tool of the impact testing machine according to claim 1, characterized in that: the center of the cover plate (7) is of a hollow structure, and the upper end of the cylindrical flat plate (10) extends out of the cover plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922465259.4U CN211085542U (en) | 2019-12-31 | 2019-12-31 | Improved pendulum moment weighing tool for impact testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922465259.4U CN211085542U (en) | 2019-12-31 | 2019-12-31 | Improved pendulum moment weighing tool for impact testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211085542U true CN211085542U (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922465259.4U Active CN211085542U (en) | 2019-12-31 | 2019-12-31 | Improved pendulum moment weighing tool for impact testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211085542U (en) |
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2019
- 2019-12-31 CN CN201922465259.4U patent/CN211085542U/en active Active
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