CN102401764A - Model loading device - Google Patents
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- CN102401764A CN102401764A CN2011103658724A CN201110365872A CN102401764A CN 102401764 A CN102401764 A CN 102401764A CN 2011103658724 A CN2011103658724 A CN 2011103658724A CN 201110365872 A CN201110365872 A CN 201110365872A CN 102401764 A CN102401764 A CN 102401764A
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Abstract
The invention provides a load loading device which comprises an installing frame (10), a load applying device (20) and an element positioning device (30), wherein the load applying device (2) comprises a positioning rod installing plate (21), a positioning rod (22), a torsion disk (23), a test element (24) rotatably connected to the second end of the positioning rod (22), a first load generating mechanism (25) connected to the torsion disk (23) and used for applying a pull force to the torsion disk (23), and a second load generating mechanism (26) connected to the torsion disk (23) and used for applying a pull force to the torsion disk (23), wherein the pull force applied to the torsion disk by the second load generating mechanism and the pull force applied to the torsion disk by the first load generating mechanism (25) form a couple or an equidirectional action force. According to the model loading device provided by the invention, the advantages of small occupation space, simple structure, convenience for use, lower cost and capability of realizing loading of multiple kinds of loads through the same device are obtained.
Description
Technical field
The present invention relates to mechanical analysis experiment field, especially, relate to a kind of model charger.
Background technology
In the photoelastic stress freezing test, traditional model charger is divided into general and special-purpose two kinds.What general charger was the most frequently used is counterweight-lever, can do tests such as simple extension, compression and bending to model, be used for the main character of measurement model material, but general charger is difficult to accomplish the multichannel loading tasks of complex model.Special-purpose charger is that concrete shape, size and the stand under load situation thereof according to model is custom-designed, therefore has higher specificity, and usable range is under many restrictions.Three-dimensional photoelasticity stress freezing test needs the charger of design, processing model separately; Both taken the scientific research fund; Be unfavorable for improving test efficiency again; And the complex structure of the charger of stress freezing, need multiple arrangement to realize corresponding test, it is low to take bigger constant temperature oven space and test efficiency in the test.
Summary of the invention
The object of the invention be to provide a kind of take up room little, simple in structure, easy to use, cost is lower, can realize the allpurpose model charger that multiple load loads through same device.
For realizing above-mentioned purpose, according to an aspect of the present invention, a kind of model charger is provided, comprising: installation frame comprises the cross-brace beam and the longitudinal bracing beam of fixed connection; The load bringing device is arranged on the installation frame; Component placement device is arranged on the installation frame, and the assignment test element; The load bringing device comprises: backstay installing plate, backstay, reverse plate and load generate mechanism; The backstay installing plate is arranged on the cross-brace beam at installation frame top; Backstay, first end are installed on the backstay installing plate, and backstay in axial direction can move up and down; Reverse plate be rotatably connected to second end of backstay, and transmitted load is to testing element; First load generates mechanism, is connected to reverse plate, and reverse plate is applied pulling force; Second load generates mechanism, is connected to reverse plate, and reverse plate is applied pulling force, and perhaps the direction with first load generation pulling force that mechanism applied is identical to generate the pulling force formation couple that mechanism applied with first load.
Further, first load generates mechanism and is connected reverse plate one side; Second load generates the opposite side that mechanism is connected reverse plate; First load generates mechanism and second load generation mechanism is symmetrical set around the central axis of reverse plate, and testing element is applied the test moment of torsion.
Further, first load generates mechanism and is connected reverse plate one side; Second load generates the opposite side that mechanism is connected reverse plate; First load generates on the installation frame of the same side that mechanism and second load generation mechanism be positioned at reverse plate, and testing element is applied the test moment of flexure.
Further, first load generates mechanism and comprises first fixed pulley and winding first lifting rope on first fixed pulley, and first end of first lifting rope is provided with first mass, and second end of first lifting rope is connected to reverse plate; Second load generates mechanism and comprises second fixed pulley and winding second lifting rope on second fixed pulley, and first end of second lifting rope is provided with second mass, and second end of second lifting rope is connected to reverse plate.
Further, first load generates mechanism and also comprises the first fixed pulley mounting rail, and the first fixed pulley mounting rail is fixedly installed on the installation frame, and first fixed pulley is fixedly installed on the first fixed pulley mounting rail; Second load generates mechanism and also comprises the second fixed pulley mounting rail, and the second fixed pulley mounting rail is fixedly installed on the installation frame, and second fixed pulley is fixedly installed on the second fixed pulley mounting rail.
Further, first load generates mechanism and also comprises first joint pin, and first joint pin is located on the reverse plate along the axial direction of reverse plate; Second load generates mechanism and also comprises second joint pin, and second joint pin is located on the reverse plate along the axial direction of reverse plate; Second end of first lifting rope includes first joint of first end that is connected to first joint pin and is connected to second joint of second end of first joint pin; Second end of second lifting rope includes the 3rd joint of first end that is connected to second joint pin and is connected to the 4th joint of second end of second joint pin.
Further, comprise a plurality of mounting holes that connect reverse plate vertically on the reverse plate, first joint pin and second joint pin selectively be installed in any two along in the mounting hole of the axle center of reverse plate symmetry.
Further, the first fixed pulley mounting rail and the second fixed pulley mounting rail longitudinally the lengthwise location of brace summer be adjustable.
Further, cross-brace beam and longitudinal bracing beam are provided with a plurality of mounting holes.
Further, component placement device comprises the positioning supports plate and is arranged on the keeper on the positioning supports plate, and keeper is adjustable along the lengthwise location of positioning supports plate, and testing element 24 is fixedly installed on the keeper 32.
The present invention has following beneficial effect:
1. the model charger comprises the load bringing device; The load bringing device comprises that load generates mechanism and reverse plate; The reverse plate transmitted load is to testing element, and load generates mechanism to be had reverse plate is applied first duty of moment of torsion and reverse plate applied second duty of moment of flexure.This device generates mechanism through a cover load can realize that moment of torsion loads and moment of flexure loads, and the load that need not to provide extra generates mechanism, therefore can effectively save fund, reduces cost.This device switches load, and to apply state efficient and convenient, and backstay can move up and down, and can be applicable to that the moment of torsion of multiple testing element and moment of flexure test, easy to use, simple to operate, effectively increases work efficiency.
2. first load generation mechanism and second load generation mechanism are symmetrical set around the axis rotating shaft of reverse plate, and form couple, can stable and pure torsional interaction power be provided for charger, and test more accurately and reliably.
3. the interpolation of the load of this model charger realizes through mass, can control the interpolation of load, obtains required test mode, and can carry out measurement data simultaneously in experiment and demarcate, and achieves many things at one stroke.
Except top described purpose, feature and advantage, the present invention also has other purpose, feature and advantage.To do further detailed explanation to the present invention with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the perspective view according to the model charger of the first embodiment of the present invention; And
Fig. 2 is the perspective view of model charger according to a second embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Figure 1, according to the first embodiment of the present invention, the model charger comprises installation frame 10, load bringing device 20 and component placement device 30.Wherein, load bringing device 20 is arranged on the installation frame 10 with component placement device 30.Installation frame 10 comprises and is fixedly connected on cross-brace beam 11 and longitudinal bracing beam 12.On cross-brace beam 11 and the longitudinal bracing beam 12 a plurality of mounting holes can be set,, the shape of itself and testing element 24 be adapted, to satisfy the installation requirement of testing element 24 so that the installation site of load bringing device 20 and component placement device 30 is adjusted.
The load bringing device comprises that backstay installing plate 21, backstay 22, reverse plate 23, first load generate mechanism 25 and second load generates mechanism 26.Wherein backstay installing plate 21 is arranged on the cross-brace beam 11 at installation frame 10 tops; First end of backstay 22 is installed on the backstay installing plate 21; Reverse plate 23 is installed in second end of backstay 22; First load generates mechanism 25 and second load generation mechanism 26 is connected on the reverse plate 23, and respectively reverse plate 23 is applied pulling force.Testing element 24 is installed between reverse plate 23 and the component placement device 30; First load generates mechanism 25 and second load generates the adjustment of mechanism 26 through the position; Can form couple or acting force in the same way respectively to the pulling force of reverse plate 23, and have reverse plate 23 is applied first duty of moment of torsion and reverse plate 23 applied second duty of moment of flexure.
The two ends of backstay installing plate 21 are separately positioned on two cross-brace beams 11 that are oppositely arranged at installation frame 10 tops, and the end is provided with elongated slot, and backstay installing plate 21 can be adjusted in installation process along its length.After adjustment was accomplished, erection bolt was fixedly installed on backstay installing plate 21 on the cross-brace beam 11.The centre position of backstay installing plate 21 vertically is provided with pilot hole, and backstay 22 passes this pilot hole, and can move up and down along pilot hole.
First end of backstay 22 cooperates with backstay installing plate 21, and nut is set on it, it can not be moved downward and guarantees that the gravity of backstay 22 and reverse plate 23 is not applied to testing element 24.When first load generated mechanism 25 and second load and generates mechanism 26 and carry out the loading action of moment of flexure, backstay 22 can freely rotate smaller angle around the node of first end and installing plate 21, and assurance does not have extra acting force to be applied to testing element 24.Second end of backstay 22 is fixedly connected with reverse plate 23, and its connected mode can also can be welding for being threaded.End at first end of backstay 22 is provided with operation planar, is convenient to turn backstay 22, to guarantee the annexation of itself and reverse plate 23 etc.
First load generates mechanism 25 and second load generation mechanism 26 is symmetrical set around the central axis of reverse plate 23, and form couple.First load generates the side that mechanism 25 is connected reverse plate 23, and reverse plate 23 is applied moment of torsion; Second load generates the opposite side that mechanism 26 is connected reverse plate 23, and reverse plate 23 is applied the identical moment of torsion of torque, direction that generates mechanism 25 with first load.First load generates mechanism 25 and second load generation mechanism 26 can be the telescopic oil cylinder that is provided with in pairs, perhaps other rotation control mechanism.
In the present embodiment, first load generates mechanism 25 and comprises the first fixed pulley mounting rail 254, is fixedly installed on first fixed pulley 251 and first lifting rope 252 of winding on first fixed pulley 251 on the first fixed pulley mounting rail 254.The first fixed pulley mounting rail 254 is horizontally installed between two of the installation frame 10 of reverse plate 23 1 sides adjacent longitudinal bracing beams 12, and fixes through bolt.The first fixed pulley mounting rail 254 longitudinally lengthwise location of brace summer 12 is adjustable, can be applicable to the test of the testing element 24 of differing heights diverse location.The two ends of the first fixed pulley mounting rail 254 are provided with long slot bore, and erection bolt is removable in long slot bore, can make the first fixed pulley mounting rail 254 carry out the position adjustment along horizontal direction.
First fixed pulley 251 is arranged on the outside of the first fixed pulley mounting rail 254 rotationally.Between first fixed pulley 251 and the first fixed pulley mounting rail 254, the first fixed pulley mount pad 255 can also be set; The first fixed pulley mount pad 255 is arranged on the first fixed pulley mounting rail 254 through bolt, and first fixed pulley 251 is fixedly installed on the first fixed pulley mount pad 255.Be provided with a plurality of mounting holes along its length on the first fixed pulley mounting rail 254, the first fixed pulley mount pad 255 can be in the enterprising line position adjustment of the length direction of the first fixed pulley mounting rail 254.The existence of the first fixed pulley mount pad 255, making wins divides between the fixed pulley 251 and the first fixed pulley mounting rail 254 and is arranged, and is convenient to location, installation, replacing and the maintenance of first fixed pulley 251 more, and need not to remove the first fixed pulley mounting rail 254.
First end of first lifting rope 252 extends to outside the installation frame 10 through first fixed pulley 251, and the end is provided with first mass 253.First mass 253 is convenient in test process, test data demarcated for having the mass that clear and definite quality is demarcated.Second end of first lifting rope 252 is connected to reverse plate 23.In the present embodiment, be provided with first joint pin, 256, the first joint pins 256 in one of them mounting hole of reverse plate 23 and in axial direction be located on the reverse plate 23, and the termination, two ends exceeds the card of reverse plate 23.Second end of first lifting rope 252 is a herringbone jag structure, includes first joint 257 of first end that is connected to first joint pin 256 and is connected to second joint 258 of second end of first joint pin 256.Herringbone jag structure can not interfere second end of first lifting rope 252 with reverse plate 23, and first load generates mechanism 25 can provide purer twisting resistance for reverse plate 23, guarantees the accuracy of measuring.
Second load generates mechanism 26 and comprises the second fixed pulley mounting rail 264, is fixedly installed on second fixed pulley 261 and second lifting rope 262 of winding on second fixed pulley 261 on the second fixed pulley mounting rail 264.The second fixed pulley mounting rail 264 is horizontally installed between two adjacent longitudinal bracing beams 12 of the installation frame 10 of the opposite side of the second fixed pulley mounting rail, 264 positions, and fixes through bolt.The second fixed pulley mounting rail 264 longitudinally lengthwise location of brace summer 12 is adjustable, can be applicable to the test of the testing element 24 of differing heights diverse location.The two ends of the second fixed pulley mounting rail 264 are provided with long slot bore, and erection bolt is removable in long slot bore, can make the second fixed pulley mounting rail 264 carry out the position adjustment along horizontal direction.
Second fixed pulley 261 is arranged on the outside of the second fixed pulley mounting rail 264 rotationally.Between second fixed pulley 261 and the second fixed pulley mounting rail 264, the second fixed pulley mount pad 266 can also be set; The second fixed pulley mount pad 266 is arranged on the second fixed pulley mounting rail 264 through bolt, and second fixed pulley 261 is fixedly installed on the second fixed pulley mount pad 266.Be provided with a plurality of mounting holes along its length on the second fixed pulley mounting rail 264, the second fixed pulley mount pad 266 can be in the enterprising line position adjustment of the length direction of the second fixed pulley mounting rail 264.The existence of the second fixed pulley mount pad 266 makes to divide between second fixed pulley 261 and the second fixed pulley mounting rail 264 to be arranged, and is convenient to location, installation, replacing and the maintenance of second fixed pulley 261 more, and need not to remove the second fixed pulley mounting rail 264.
First end of second lifting rope 262 extends to outside the installation frame 10 through second fixed pulley 261, and the end is provided with second mass 263.Second mass 263 is convenient in test process, test data demarcated for having the mass that clear and definite quality is demarcated.Second end of second lifting rope 262 is connected to reverse plate 23.In the present embodiment, be provided with second joint pin, 266, the second joint pins 266 in wherein two mounting holes of reverse plate 23 and in axial direction be located on the reverse plate 23, and the termination, two ends exceeds the card of reverse plate 23.Second end of second lifting rope 262 is a herringbone jag structure, includes the 3rd joint 267 of first end that is connected to second joint pin 266 and is connected to the 4th joint 268 of second end of second joint pin 266.Herringbone jag structure can not interfere second end of second lifting rope 262 with reverse plate 23, and second load generates mechanism 26 can provide purer twisting resistance for reverse plate 23, guarantees the accuracy of measuring.
First load generates between mechanism 25 and second load generation mechanism 26 and forms couple; And be connected to first joint pin 256 and second joint pin 266 that is arranged on the reverse plate 23 through the herringbone jag structure of lifting rope; Make the suffered pulling force of reverse plate 23 balance more; Can produce stable twisting action power, obtain experiment effect more accurately.
First load generates mechanism 25 and second load and generates mechanism 26 and also can realize reverse plate 23 is applied the perhaps function of acting force in the same way of couple through piston apparatus or other tension application device.
In conjunction with referring to Fig. 2; Model charger according to a second embodiment of the present invention; Difference among itself and first embodiment is; First load generates on the installation frame 10 of the same side that mechanism 25 and second load generation mechanism 26 be arranged on reverse plate, and shared same fixed pulley mounting rail, the i.e. first fixed pulley mounting rail 254.First load generates mechanism 25 and second load generation mechanism 26 is arranged on the installation frame 10 of the same side; Link position on reverse plate 23 lays respectively at the both sides at the rotating shaft center of reverse plate 23; And symmetrically, so that, make reverse plate 23 that the pulling force that receives is passed to testing element 24 for reverse plate provides equal and opposite in direction, tension that direction is identical; Make testing element 24 receive moment of flexure, thereby testing element 24 is carried out the test of moment of flexure.
From the foregoing description, can learn; According to model charger of the present invention; Comprise the load bringing device; The load bringing device comprises that load generates mechanism and reverse plate, and the reverse plate transmitted load is to testing element, and load generates mechanism to be had reverse plate is applied first duty of moment of torsion and reverse plate applied second duty of moment of flexure.This device generates mechanism through a cover load can realize that moment of torsion loads and moment of flexure loads, and the load that need not to provide extra generates mechanism, therefore can effectively save fund, reduces cost.This device switches load, and to apply state efficient and convenient, and backstay can move up and down, and can be applicable to that the moment of torsion of multiple testing element and moment of flexure test, easy to use, simple to operate, effectively increases work efficiency.First load generates mechanism and second load generation mechanism is symmetrical set around the axis rotating shaft of reverse plate, and form couple, can stable and pure torsional interaction power be provided for charger, and test more accurately and reliably.The load interpolation of this model charger realizes through mass, can control the interpolation of load, obtains required test mode, and can carry out measurement data simultaneously in experiment and demarcate, and achieves many things at one stroke.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a model charger is characterized in that, comprising:
Installation frame (10) comprises the cross-brace beam (11) and the longitudinal bracing beam (12) of fixed connection;
Load bringing device (20) is arranged on the said installation frame (10);
Component placement device (30) is arranged on the said installation frame (10), and assignment test element (24);
Said load bringing device (20) comprising: backstay installing plate (21), backstay (22), reverse plate (23) and load generate mechanism (25);
Said backstay installing plate (21) is arranged on the said cross-brace beam (11) at said installation frame (10) top;
First end of said backstay (22) is installed on the said backstay installing plate (21), and said backstay (22) in axial direction can move up and down;
Said reverse plate (23) is rotatably connected to second end of said backstay (22), and transmitted load to said testing element (24);
First load generates mechanism (25), is connected to said reverse plate (23), and said reverse plate (23) is applied pulling force;
Second load generates mechanism (26); Be connected to said reverse plate (23); Said reverse plate (23) is applied pulling force, and generate with said first load that pulling force that mechanism (25) applied forms couple or to generate the direction of the pulling force that mechanism (25) applied identical with said first load.
2. model charger according to claim 1; It is characterized in that; Said first load generates mechanism (25) and is connected said reverse plate (23) one sides; Said second load generates the opposite side that mechanism (26) is connected said reverse plate (23), and said first load generates mechanism (25) and is symmetrical set around the central axis of said reverse plate (23) with said second load generation mechanism (26), and said testing element (24) is applied the test moment of torsion.
3. model charger according to claim 1; It is characterized in that; Said first load generates mechanism (25) and is connected said reverse plate (23) one sides; Said second load generates the opposite side that mechanism (26) is connected said reverse plate (23), and said first load generates mechanism (25) and said second load and generates on the said installation frame (10) of the same side that mechanism (26) is positioned at said reverse plate (23), and said testing element (24) is applied the test moment of flexure.
4. according to claim 2 or 3 described model chargers, it is characterized in that,
Said first load generates mechanism (25) and comprises first fixed pulley (251) and winding first lifting rope (252) on said first fixed pulley (251); First end of said first lifting rope (252) is provided with first mass (253), and second end of said first lifting rope (252) is connected to said reverse plate (23);
Said second load generates mechanism (26) and comprises second fixed pulley (261) and winding second lifting rope (262) on said second fixed pulley (261); First end of said second lifting rope (262) is provided with second mass (263), and second end of said second lifting rope (262) is connected to said reverse plate (23).
5. model charger according to claim 4 is characterized in that,
Said first load generates mechanism (25) and also comprises the first fixed pulley mounting rail (254); The said first fixed pulley mounting rail (254) is fixedly installed on the said installation frame (10), and said first fixed pulley (251) is fixedly installed on the said first fixed pulley mounting rail (254);
Said second load generates mechanism (26) and also comprises the second fixed pulley mounting rail (264); The said second fixed pulley mounting rail (264) is fixedly installed on the said installation frame (10), and said second fixed pulley (261) is fixedly installed on the said second fixed pulley mounting rail (264).
6. model charger according to claim 5 is characterized in that,
Said first load generates mechanism (25) and also comprises first joint pin (256), and said first joint pin (256) is located on the said reverse plate (23) along the axial direction of said reverse plate (23);
Said second load generates mechanism (26) and also comprises second joint pin (266), and said second joint pin (266) is located on the said reverse plate (23) along the axial direction of said reverse plate (23);
Second end of said first lifting rope (252) includes first joint (257) of first end that is connected to said first joint pin (256) and is connected to second joint (258) of second end of said first joint pin (256);
Second end of said second lifting rope (262) includes the 3rd joint (267) of first end that is connected to said second joint pin (266) and is connected to the 4th joint (268) of second end of said second joint pin (266).
7. model charger according to claim 6; It is characterized in that; Comprise a plurality of mounting holes that connect said reverse plate (23) vertically on the said reverse plate (23), said first joint pin (256) and said second joint pin (266) selectively are installed in the said mounting hole of axle center symmetry of any two said reverse plates in edge (23).
8. model charger according to claim 5 is characterized in that, said first fixed pulley mounting rail (254) and the said second fixed pulley mounting rail (264) are adjustable along the position of the length direction of said longitudinal bracing beam (12).
9. model charger according to claim 1 is characterized in that, said cross-brace beam (11) and said longitudinal bracing beam (12) are provided with a plurality of mounting holes.
10. model charger according to claim 1; It is characterized in that; Said component placement device (30) comprises positioning supports plate (31) and is arranged on the keeper (32) on the said positioning supports plate (31); Said keeper (32) is adjustable along the position of the length direction of said positioning supports plate (31), and said testing element (24) is fixedly installed on the said keeper (32).
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| CN 201110365872 CN102401764B (en) | 2011-11-17 | 2011-11-17 | Model loading device |
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| CN 201110365872 CN102401764B (en) | 2011-11-17 | 2011-11-17 | Model loading device |
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| CN102401764A true CN102401764A (en) | 2012-04-04 |
| CN102401764B CN102401764B (en) | 2013-06-05 |
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